* [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
@ 2014-11-05 4:40 Huawei Xie
0 siblings, 0 replies; 10+ messages in thread
From: Huawei Xie @ 2014-11-05 4:40 UTC (permalink / raw)
To: dev
This patch fixes code style issues and refines some comments in vhost library.
---
lib/librte_vhost/eventfd_link/eventfd_link.c | 244 ++++++++++-----------
lib/librte_vhost/eventfd_link/eventfd_link.h | 127 ++++++-----
lib/librte_vhost/rte_virtio_net.h | 3 +-
lib/librte_vhost/vhost-net-cdev.c | 187 +++++++++-------
lib/librte_vhost/vhost_rxtx.c | 13 +-
lib/librte_vhost/virtio-net.c | 317 +++++++++++++++++----------
6 files changed, 494 insertions(+), 397 deletions(-)
diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.c b/lib/librte_vhost/eventfd_link/eventfd_link.c
index fc0653a..542ec2c 100644
--- a/lib/librte_vhost/eventfd_link/eventfd_link.c
+++ b/lib/librte_vhost/eventfd_link/eventfd_link.c
@@ -1,26 +1,26 @@
/*-
- * * GPL LICENSE SUMMARY
- * *
- * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * *
- * * This program is free software; you can redistribute it and/or modify
- * * it under the terms of version 2 of the GNU General Public License as
- * * published by the Free Software Foundation.
- * *
- * * This program is distributed in the hope that it will be useful, but
- * * WITHOUT ANY WARRANTY; without even the implied warranty of
- * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * * General Public License for more details.
- * *
- * * You should have received a copy of the GNU General Public License
- * * along with this program; if not, write to the Free Software
- * * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * * The full GNU General Public License is included in this distribution
- * * in the file called LICENSE.GPL.
- * *
- * * Contact Information:
- * * Intel Corporation
- * */
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ * Intel Corporation
+ */
#include <linux/eventfd.h>
#include <linux/miscdevice.h>
@@ -42,15 +42,15 @@
* get_files_struct is copied from fs/file.c
*/
struct files_struct *
-get_files_struct (struct task_struct *task)
+get_files_struct(struct task_struct *task)
{
struct files_struct *files;
- task_lock (task);
+ task_lock(task);
files = task->files;
if (files)
- atomic_inc (&files->count);
- task_unlock (task);
+ atomic_inc(&files->count);
+ task_unlock(task);
return files;
}
@@ -59,17 +59,15 @@ get_files_struct (struct task_struct *task)
* put_files_struct is extracted from fs/file.c
*/
void
-put_files_struct (struct files_struct *files)
+put_files_struct(struct files_struct *files)
{
- if (atomic_dec_and_test (&files->count))
- {
- BUG ();
- }
+ if (atomic_dec_and_test(&files->count))
+ BUG();
}
static long
-eventfd_link_ioctl (struct file *f, unsigned int ioctl, unsigned long arg)
+eventfd_link_ioctl(struct file *f, unsigned int ioctl, unsigned long arg)
{
void __user *argp = (void __user *) arg;
struct task_struct *task_target = NULL;
@@ -78,96 +76,88 @@ eventfd_link_ioctl (struct file *f, unsigned int ioctl, unsigned long arg)
struct fdtable *fdt;
struct eventfd_copy eventfd_copy;
- switch (ioctl)
- {
- case EVENTFD_COPY:
- if (copy_from_user (&eventfd_copy, argp, sizeof (struct eventfd_copy)))
- return -EFAULT;
-
- /*
- * Find the task struct for the target pid
- */
- task_target =
- pid_task (find_vpid (eventfd_copy.target_pid), PIDTYPE_PID);
- if (task_target == NULL)
- {
- printk (KERN_DEBUG "Failed to get mem ctx for target pid\n");
- return -EFAULT;
- }
-
- files = get_files_struct (current);
- if (files == NULL)
- {
- printk (KERN_DEBUG "Failed to get files struct\n");
- return -EFAULT;
- }
-
- rcu_read_lock ();
- file = fcheck_files (files, eventfd_copy.source_fd);
- if (file)
- {
- if (file->f_mode & FMODE_PATH
- || !atomic_long_inc_not_zero (&file->f_count))
- file = NULL;
- }
- rcu_read_unlock ();
- put_files_struct (files);
-
- if (file == NULL)
- {
- printk (KERN_DEBUG "Failed to get file from source pid\n");
- return 0;
- }
-
- /*
- * Release the existing eventfd in the source process
- */
- spin_lock (&files->file_lock);
- filp_close (file, files);
- fdt = files_fdtable (files);
- fdt->fd[eventfd_copy.source_fd] = NULL;
- spin_unlock (&files->file_lock);
-
- /*
- * Find the file struct associated with the target fd.
- */
-
- files = get_files_struct (task_target);
- if (files == NULL)
- {
- printk (KERN_DEBUG "Failed to get files struct\n");
- return -EFAULT;
- }
-
- rcu_read_lock ();
- file = fcheck_files (files, eventfd_copy.target_fd);
- if (file)
- {
- if (file->f_mode & FMODE_PATH
- || !atomic_long_inc_not_zero (&file->f_count))
+ switch (ioctl) {
+ case EVENTFD_COPY:
+ if (copy_from_user(&eventfd_copy, argp,
+ sizeof(struct eventfd_copy)))
+ return -EFAULT;
+
+ /*
+ * Find the task struct for the target pid
+ */
+ task_target =
+ pid_task(find_vpid(eventfd_copy.target_pid), PIDTYPE_PID);
+ if (task_target == NULL) {
+ printk(KERN_DEBUG "Failed to get mem ctx for target pid\n");
+ return -EFAULT;
+ }
+
+ files = get_files_struct(current);
+ if (files == NULL) {
+ printk(KERN_DEBUG "Failed to get files struct\n");
+ return -EFAULT;
+ }
+
+ rcu_read_lock();
+ file = fcheck_files(files, eventfd_copy.source_fd);
+ if (file) {
+ if (file->f_mode & FMODE_PATH ||
+ !atomic_long_inc_not_zero(&file->f_count))
+ file = NULL;
+ }
+ rcu_read_unlock();
+ put_files_struct(files);
+
+ if (file == NULL) {
+ printk(KERN_DEBUG "Failed to get file from source pid\n");
+ return 0;
+ }
+
+ /*
+ * Release the existing eventfd in the source process
+ */
+ spin_lock(&files->file_lock);
+ filp_close(file, files);
+ fdt = files_fdtable(files);
+ fdt->fd[eventfd_copy.source_fd] = NULL;
+ spin_unlock(&files->file_lock);
+
+ /*
+ * Find the file struct associated with the target fd.
+ */
+
+ files = get_files_struct(task_target);
+ if (files == NULL) {
+ printk(KERN_DEBUG "Failed to get files struct\n");
+ return -EFAULT;
+ }
+
+ rcu_read_lock();
+ file = fcheck_files(files, eventfd_copy.target_fd);
+ if (file) {
+ if (file->f_mode & FMODE_PATH ||
+ !atomic_long_inc_not_zero(&file->f_count))
file = NULL;
- }
- rcu_read_unlock ();
- put_files_struct (files);
-
- if (file == NULL)
- {
- printk (KERN_DEBUG "Failed to get file from target pid\n");
- return 0;
- }
+ }
+ rcu_read_unlock();
+ put_files_struct(files);
+ if (file == NULL) {
+ printk(KERN_DEBUG "Failed to get file from target pid\n");
+ return 0;
+ }
- /*
- * Install the file struct from the target process into the
- * file desciptor of the source process,
- */
+ /*
+ * Install the file struct from the target process into the
+ * file desciptor of the source process,
+ */
- fd_install (eventfd_copy.source_fd, file);
+ fd_install(eventfd_copy.source_fd, file);
- return 0;
+ return 0;
- default:
- return -ENOIOCTLCMD;
+ default:
+ return -ENOIOCTLCMD;
}
}
@@ -183,23 +173,23 @@ static struct miscdevice eventfd_link_misc = {
};
static int __init
-eventfd_link_init (void)
+eventfd_link_init(void)
{
- return misc_register (&eventfd_link_misc);
+ return misc_register(&eventfd_link_misc);
}
-module_init (eventfd_link_init);
+module_init(eventfd_link_init);
static void __exit
-eventfd_link_exit (void)
+eventfd_link_exit(void)
{
- misc_deregister (&eventfd_link_misc);
+ misc_deregister(&eventfd_link_misc);
}
-module_exit (eventfd_link_exit);
+module_exit(eventfd_link_exit);
-MODULE_VERSION ("0.0.1");
-MODULE_LICENSE ("GPL v2");
-MODULE_AUTHOR ("Anthony Fee");
-MODULE_DESCRIPTION ("Link eventfd");
-MODULE_ALIAS ("devname:eventfd-link");
+MODULE_VERSION("0.0.1");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Anthony Fee");
+MODULE_DESCRIPTION("Link eventfd");
+MODULE_ALIAS("devname:eventfd-link");
diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.h b/lib/librte_vhost/eventfd_link/eventfd_link.h
index a32a8dd..ea619ec 100644
--- a/lib/librte_vhost/eventfd_link/eventfd_link.h
+++ b/lib/librte_vhost/eventfd_link/eventfd_link.h
@@ -1,79 +1,76 @@
/*-
- * * This file is provided under a dual BSD/GPLv2 license. When using or
- * * redistributing this file, you may do so under either license.
- * *
- * * GPL LICENSE SUMMARY
- * *
- * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * *
- * * This program is free software; you can redistribute it and/or modify
- * * it under the terms of version 2 of the GNU General Public License as
- * * published by the Free Software Foundation.
- * *
- * * This program is distributed in the hope that it will be useful, but
- * * WITHOUT ANY WARRANTY; without even the implied warranty of
- * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * * General Public License for more details.
- * *
- * * You should have received a copy of the GNU General Public License
- * * along with this program; if not, write to the Free Software
- * * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * * The full GNU General Public License is included in this distribution
- * * in the file called LICENSE.GPL.
- * *
- * * Contact Information:
- * * Intel Corporation
- * *
- * * BSD LICENSE
- * *
- * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * * All rights reserved.
- * *
- * * Redistribution and use in source and binary forms, with or without
- * * modification, are permitted provided that the following conditions
- * * are met:
- * *
- * * * Redistributions of source code must retain the above copyright
- * * notice, this list of conditions and the following disclaimer.
- * * * Redistributions in binary form must reproduce the above copyright
- * * notice, this list of conditions and the following disclaimer in
- * * the documentation and/or other materials provided with the
- * * distribution.
- * * * Neither the name of Intel Corporation nor the names of its
- * * contributors may be used to endorse or promote products derived
- * * from this software without specific prior written permission.
- * *
- * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * *
- * */
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ * Intel Corporation
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
#ifndef _EVENTFD_LINK_H_
#define _EVENTFD_LINK_H_
/*
- * ioctl to copy an fd entry in calling process to an fd in a target process
+ * ioctl to copy an fd entry in calling process to an fd in a target process
*/
#define EVENTFD_COPY 1
/*
- * arguements for the EVENTFD_COPY ioctl
+ * arguements for the EVENTFD_COPY ioctl
*/
struct eventfd_copy {
- // fd in the target pid
- unsigned target_fd;
- // fd in the calling pid
- unsigned source_fd;
- // pid of the target pid
- pid_t target_pid;
+ unsigned target_fd; /* fd in the target pid */
+ unsigned source_fd; /* fd in the calling pid */
+ pid_t target_pid; /* pid of the target pid */
};
#endif /* _EVENTFD_LINK_H_ */
diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h
index b6548a1..00b1328 100644
--- a/lib/librte_vhost/rte_virtio_net.h
+++ b/lib/librte_vhost/rte_virtio_net.h
@@ -90,8 +90,7 @@ struct vhost_virtqueue {
/**
* Device structure contains all configuration information relating to the device.
*/
-struct virtio_net
-{
+struct virtio_net {
struct vhost_virtqueue *virtqueue[VIRTIO_QNUM]; /**< Contains all virtqueue information. */
struct virtio_memory *mem; /**< QEMU memory and memory region information. */
uint64_t features; /**< Negotiated feature set. */
diff --git a/lib/librte_vhost/vhost-net-cdev.c b/lib/librte_vhost/vhost-net-cdev.c
index 91ff0d8..57c76cb 100644
--- a/lib/librte_vhost/vhost-net-cdev.c
+++ b/lib/librte_vhost/vhost-net-cdev.c
@@ -46,21 +46,21 @@
#include "vhost-net-cdev.h"
-#define FUSE_OPT_DUMMY "\0\0"
-#define FUSE_OPT_FORE "-f\0\0"
-#define FUSE_OPT_NOMULTI "-s\0\0"
+#define FUSE_OPT_DUMMY "\0\0"
+#define FUSE_OPT_FORE "-f\0\0"
+#define FUSE_OPT_NOMULTI "-s\0\0"
-static const uint32_t default_major = 231;
-static const uint32_t default_minor = 1;
-static const char cuse_device_name[] = "/dev/cuse";
-static const char default_cdev[] = "vhost-net";
+static const uint32_t default_major = 231;
+static const uint32_t default_minor = 1;
+static const char cuse_device_name[] = "/dev/cuse";
+static const char default_cdev[] = "vhost-net";
-static struct fuse_session *session;
-static struct vhost_net_device_ops const *ops;
+static struct fuse_session *session;
+static struct vhost_net_device_ops const *ops;
/*
- * Returns vhost_device_ctx from given fuse_req_t. The index is populated later when
- * the device is added to the device linked list.
+ * Returns vhost_device_ctx from given fuse_req_t. The index is populated later
+ * when the device is added to the device linked list.
*/
static struct vhost_device_ctx
fuse_req_to_vhost_ctx(fuse_req_t req, struct fuse_file_info *fi)
@@ -75,7 +75,8 @@ fuse_req_to_vhost_ctx(fuse_req_t req, struct fuse_file_info *fi)
}
/*
- * When the device is created in QEMU it gets initialised here and added to the device linked list.
+ * When the device is created in QEMU it gets initialised here and
+ * added to the device linked list.
*/
static void
vhost_net_open(fuse_req_t req, struct fuse_file_info *fi)
@@ -91,7 +92,8 @@ vhost_net_open(fuse_req_t req, struct fuse_file_info *fi)
fi->fh = err;
- RTE_LOG(INFO, VHOST_CONFIG, "(%"PRIu64") Device configuration started\n", fi->fh);
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "(%"PRIu64") Device configuration started\n", fi->fh);
fuse_reply_open(req, fi);
}
@@ -113,8 +115,8 @@ vhost_net_release(fuse_req_t req, struct fuse_file_info *fi)
* Boilerplate code for CUSE IOCTL
* Implicit arguments: ctx, req, result.
*/
-#define VHOST_IOCTL(func) do { \
- result = (func)(ctx); \
+#define VHOST_IOCTL(func) do { \
+ result = (func)(ctx); \
fuse_reply_ioctl(req, result, NULL, 0); \
} while (0)
@@ -122,57 +124,58 @@ vhost_net_release(fuse_req_t req, struct fuse_file_info *fi)
* Boilerplate IOCTL RETRY
* Implicit arguments: req.
*/
-#define VHOST_IOCTL_RETRY(size_r, size_w) do { \
- struct iovec iov_r = { arg, (size_r) }; \
- struct iovec iov_w = { arg, (size_w) }; \
- fuse_reply_ioctl_retry(req, &iov_r, (size_r)?1:0, &iov_w, (size_w)?1:0); \
+#define VHOST_IOCTL_RETRY(size_r, size_w) do { \
+ struct iovec iov_r = { arg, (size_r) }; \
+ struct iovec iov_w = { arg, (size_w) }; \
+ fuse_reply_ioctl_retry(req, &iov_r, \
+ (size_r) ? 1 : 0, &iov_w, (size_w) ? 1 : 0);\
} while (0)
/*
* Boilerplate code for CUSE Read IOCTL
* Implicit arguments: ctx, req, result, in_bufsz, in_buf.
*/
-#define VHOST_IOCTL_R(type, var, func) do { \
- if (!in_bufsz) { \
- VHOST_IOCTL_RETRY(sizeof(type), 0); \
- } else { \
- (var) = *(const type*) in_buf; \
- result = func(ctx, &(var)); \
- fuse_reply_ioctl(req, result, NULL, 0); \
- } \
+#define VHOST_IOCTL_R(type, var, func) do { \
+ if (!in_bufsz) { \
+ VHOST_IOCTL_RETRY(sizeof(type), 0);\
+ } else { \
+ (var) = *(const type*)in_buf; \
+ result = func(ctx, &(var)); \
+ fuse_reply_ioctl(req, result, NULL, 0);\
+ } \
} while (0)
/*
- * Boilerplate code for CUSE Write IOCTL
+ * Boilerplate code for CUSE Write IOCTL
* Implicit arguments: ctx, req, result, out_bufsz.
*/
-#define VHOST_IOCTL_W(type, var, func) do { \
- if (!out_bufsz) { \
- VHOST_IOCTL_RETRY(0, sizeof(type)); \
- } else { \
- result = (func)(ctx, &(var)); \
- fuse_reply_ioctl(req, result, &(var), sizeof(type)); \
- } \
+#define VHOST_IOCTL_W(type, var, func) do { \
+ if (!out_bufsz) { \
+ VHOST_IOCTL_RETRY(0, sizeof(type));\
+ } else { \
+ result = (func)(ctx, &(var));\
+ fuse_reply_ioctl(req, result, &(var), sizeof(type));\
+ } \
} while (0)
/*
* Boilerplate code for CUSE Read/Write IOCTL
* Implicit arguments: ctx, req, result, in_bufsz, in_buf.
*/
-#define VHOST_IOCTL_RW(type1, var1, type2, var2, func) do { \
- if (!in_bufsz) { \
- VHOST_IOCTL_RETRY(sizeof(type1), sizeof(type2)); \
- } else { \
- (var1) = *(const type1*) (in_buf); \
- result = (func)(ctx, (var1), &(var2)); \
- fuse_reply_ioctl(req, result, &(var2), sizeof(type2)); \
- } \
+#define VHOST_IOCTL_RW(type1, var1, type2, var2, func) do { \
+ if (!in_bufsz) { \
+ VHOST_IOCTL_RETRY(sizeof(type1), sizeof(type2));\
+ } else { \
+ (var1) = *(const type1*) (in_buf); \
+ result = (func)(ctx, (var1), &(var2)); \
+ fuse_reply_ioctl(req, result, &(var2), sizeof(type2));\
+ } \
} while (0)
/*
- * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on
- * the type of IOCTL a buffer is requested to read or to write. This
- * request is handled by FUSE and the buffer is then given to CUSE.
+ * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on the type
+ * of IOCTL a buffer is requested to read or to write. This request is handled
+ * by FUSE and the buffer is then given to CUSE.
*/
static void
vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
@@ -189,33 +192,39 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
switch (cmd) {
case VHOST_NET_SET_BACKEND:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n", ctx.fh);
VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_backend);
break;
case VHOST_GET_FEATURES:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_GET_FEATURES\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_GET_FEATURES\n", ctx.fh);
VHOST_IOCTL_W(uint64_t, features, ops->get_features);
break;
case VHOST_SET_FEATURES:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_FEATURES\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_FEATURES\n", ctx.fh);
VHOST_IOCTL_R(uint64_t, features, ops->set_features);
break;
case VHOST_RESET_OWNER:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_RESET_OWNER\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_RESET_OWNER\n", ctx.fh);
VHOST_IOCTL(ops->reset_owner);
break;
case VHOST_SET_OWNER:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_OWNER\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_OWNER\n", ctx.fh);
VHOST_IOCTL(ops->set_owner);
break;
case VHOST_SET_MEM_TABLE:
/*TODO fix race condition.*/
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n", ctx.fh);
static struct vhost_memory mem_temp;
switch (in_bufsz) {
@@ -227,7 +236,9 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
mem_temp = *(const struct vhost_memory *) in_buf;
if (mem_temp.nregions > 0) {
- VHOST_IOCTL_RETRY(sizeof(struct vhost_memory) + (sizeof(struct vhost_memory_region) * mem_temp.nregions), 0);
+ VHOST_IOCTL_RETRY(sizeof(struct vhost_memory) +
+ (sizeof(struct vhost_memory_region) *
+ mem_temp.nregions), 0);
} else {
result = -1;
fuse_reply_ioctl(req, result, NULL, 0);
@@ -235,56 +246,70 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
break;
default:
- result = ops->set_mem_table(ctx, in_buf, mem_temp.nregions);
+ result = ops->set_mem_table(ctx,
+ in_buf, mem_temp.nregions);
if (result)
fuse_reply_err(req, EINVAL);
else
fuse_reply_ioctl(req, result, NULL, 0);
-
}
-
break;
case VHOST_SET_VRING_NUM:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_NUM\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_state, state, ops->set_vring_num);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_NUM\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_state, state,
+ ops->set_vring_num);
break;
case VHOST_SET_VRING_BASE:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_BASE\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_state, state, ops->set_vring_base);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_BASE\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_state, state,
+ ops->set_vring_base);
break;
case VHOST_GET_VRING_BASE:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_GET_VRING_BASE\n", ctx.fh);
- VHOST_IOCTL_RW(uint32_t, index, struct vhost_vring_state, state, ops->get_vring_base);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_GET_VRING_BASE\n", ctx.fh);
+ VHOST_IOCTL_RW(uint32_t, index,
+ struct vhost_vring_state, state, ops->get_vring_base);
break;
case VHOST_SET_VRING_ADDR:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_ADDR\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_addr, addr, ops->set_vring_addr);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_ADDR\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_addr, addr,
+ ops->set_vring_addr);
break;
case VHOST_SET_VRING_KICK:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_KICK\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_vring_kick);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_KICK\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_file, file,
+ ops->set_vring_kick);
break;
case VHOST_SET_VRING_CALL:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_CALL\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_vring_call);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_CALL\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_file, file,
+ ops->set_vring_call);
break;
default:
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") IOCTL: DOESN NOT EXIST\n", ctx.fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: DOESN NOT EXIST\n", ctx.fh);
result = -1;
fuse_reply_ioctl(req, result, NULL, 0);
}
if (result < 0)
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
else
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
}
/*
@@ -297,8 +322,8 @@ static const struct cuse_lowlevel_ops vhost_net_ops = {
};
/*
- * cuse_info is populated and used to register the cuse device. vhost_net_device_ops are
- * also passed when the device is registered in main.c.
+ * cuse_info is populated and used to register the cuse device.
+ * vhost_net_device_ops are also passed when the device is registered in app.
*/
int
rte_vhost_driver_register(const char *dev_name)
@@ -314,20 +339,23 @@ rte_vhost_driver_register(const char *dev_name)
char *fuse_argv[] = {fuse_opt_dummy, fuse_opt_fore, fuse_opt_nomulti};
if (access(cuse_device_name, R_OK | W_OK) < 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "Character device %s can't be accessed, maybe not exist\n", cuse_device_name);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "char device %s can't be accessed, maybe not exist\n",
+ cuse_device_name);
return -1;
}
/*
- * The device name is created. This is passed to QEMU so that it can register
- * the device with our application.
+ * The device name is created. This is passed to QEMU so that it can
+ * register the device with our application.
*/
snprintf(device_name, PATH_MAX, "DEVNAME=%s", dev_name);
snprintf(char_device_name, PATH_MAX, "/dev/%s", dev_name);
/* Check if device already exists. */
if (access(char_device_name, F_OK) != -1) {
- RTE_LOG(ERR, VHOST_CONFIG, "Character device %s already exists\n", char_device_name);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "char device %s already exists\n", char_device_name);
return -1;
}
@@ -341,7 +369,7 @@ rte_vhost_driver_register(const char *dev_name)
ops = get_virtio_net_callbacks();
session = cuse_lowlevel_setup(3, fuse_argv,
- &cuse_info, &vhost_net_ops, 0, NULL);
+ &cuse_info, &vhost_net_ops, 0, NULL);
if (session == NULL)
return -1;
@@ -349,7 +377,8 @@ rte_vhost_driver_register(const char *dev_name)
}
/**
- * The CUSE session is launched allowing the application to receive open, release and ioctl calls.
+ * The CUSE session is launched allowing the application to receive open,
+ * release and ioctl calls.
*/
int
rte_vhost_driver_session_start(void)
diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
index 84ec0e8..ccfd82f 100644
--- a/lib/librte_vhost/vhost_rxtx.c
+++ b/lib/librte_vhost/vhost_rxtx.c
@@ -45,7 +45,7 @@
/**
* This function adds buffers to the virtio devices RX virtqueue. Buffers can
* be received from the physical port or from another virtio device. A packet
- * count is returned to indicate the number of packets that were succesfully
+ * count is returned to indicate the number of packets that are succesfully
* added to the RX queue. This function works when mergeable is disabled.
*/
static inline uint32_t __attribute__((always_inline))
@@ -76,7 +76,7 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
count = (count > MAX_PKT_BURST) ? MAX_PKT_BURST : count;
/*
- * As many data cores may want access to available buffers,
+ * As many data cores may want access to available buffers,
* they need to be reserved.
*/
do {
@@ -143,7 +143,8 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
}
/* Update used ring with desc information */
- vq->used->ring[res_cur_idx & (vq->size - 1)].id = head[packet_success];
+ vq->used->ring[res_cur_idx & (vq->size - 1)].id =
+ head[packet_success];
vq->used->ring[res_cur_idx & (vq->size - 1)].len = packet_len;
/* Copy mbuf data to buffer */
@@ -389,10 +390,7 @@ copy_from_mbuf_to_vring(struct virtio_net *dev, uint16_t res_base_idx,
}
/*
- * This function adds buffers to the virtio devices RX virtqueue. Buffers can
- * be received from the physical port or from another virtio device. A packet
- * count is returned to indicate the number of packets that were succesfully
- * added to the RX queue. This function works for mergeable RX.
+ * This function works for mergeable RX.
*/
static inline uint32_t __attribute__((always_inline))
virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id,
@@ -729,5 +727,4 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT))
eventfd_write((int)vq->kickfd, 1);
return entry_success;
-
}
diff --git a/lib/librte_vhost/virtio-net.c b/lib/librte_vhost/virtio-net.c
index 8015dd8..c07a11e 100644
--- a/lib/librte_vhost/virtio-net.c
+++ b/lib/librte_vhost/virtio-net.c
@@ -52,27 +52,27 @@
#include "vhost-net-cdev.h"
#include "eventfd_link/eventfd_link.h"
-/**
+/*
* Device linked list structure for configuration.
*/
struct virtio_net_config_ll {
- struct virtio_net dev; /* Virtio device.*/
- struct virtio_net_config_ll *next; /* Next entry on linked list.*/
+ struct virtio_net dev; /* Virtio device.*/
+ struct virtio_net_config_ll *next; /* Next dev on linked list.*/
};
const char eventfd_cdev[] = "/dev/eventfd-link";
-/* device ops to add/remove device to data core. */
+/* device ops to add/remove device to/from data core. */
static struct virtio_net_device_ops const *notify_ops;
-/* Root address of the linked list in the configuration core. */
-static struct virtio_net_config_ll *ll_root;
+/* root address of the linked list of managed virtio devices */
+static struct virtio_net_config_ll *ll_root;
-/* Features supported by this application. RX merge buffers are enabled by default. */
+/* Features supported by this lib. */
#define VHOST_SUPPORTED_FEATURES (1ULL << VIRTIO_NET_F_MRG_RXBUF)
static uint64_t VHOST_FEATURES = VHOST_SUPPORTED_FEATURES;
/* Line size for reading maps file. */
-const uint32_t BUFSIZE = PATH_MAX;
+static const uint32_t BUFSIZE = PATH_MAX;
/* Size of prot char array in procmap. */
#define PROT_SZ 5
@@ -82,19 +82,19 @@ const uint32_t BUFSIZE = PATH_MAX;
/* Structure containing information gathered from maps file. */
struct procmap {
- uint64_t va_start; /* Start virtual address in file. */
- uint64_t len; /* Size of file. */
- uint64_t pgoff; /* Not used. */
- uint32_t maj; /* Not used. */
- uint32_t min; /* Not used. */
- uint32_t ino; /* Not used. */
- char prot[PROT_SZ]; /* Not used. */
- char fname[PATH_MAX];/* File name. */
+ uint64_t va_start; /* Start virtual address in file. */
+ uint64_t len; /* Size of file. */
+ uint64_t pgoff; /* Not used. */
+ uint32_t maj; /* Not used. */
+ uint32_t min; /* Not used. */
+ uint32_t ino; /* Not used. */
+ char prot[PROT_SZ]; /* Not used. */
+ char fname[PATH_MAX]; /* File name. */
};
/*
- * Converts QEMU virtual address to Vhost virtual address. This function is used
- * to convert the ring addresses to our address space.
+ * Converts QEMU virtual address to Vhost virtual address. This function is
+ * used to convert the ring addresses to our address space.
*/
static uint64_t
qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
@@ -107,8 +107,8 @@ qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) {
region = &dev->mem->regions[regionidx];
if ((qemu_va >= region->userspace_address) &&
- (qemu_va <= region->userspace_address +
- region->memory_size)) {
+ (qemu_va <= region->userspace_address +
+ region->memory_size)) {
vhost_va = dev->mem->mapped_address + qemu_va -
dev->mem->base_address;
break;
@@ -118,7 +118,8 @@ qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
}
/*
- * Locate the file containing QEMU's memory space and map it to our address space.
+ * Locate the file containing QEMU's memory space and
+ * map it to our address space.
*/
static int
host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
@@ -134,10 +135,10 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
char procdir[PATH_MAX];
char resolved_path[PATH_MAX];
char *path = NULL;
- FILE *fmap;
- void *map;
- uint8_t found = 0;
- char line[BUFSIZE];
+ FILE *fmap;
+ void *map;
+ uint8_t found = 0;
+ char line[BUFSIZE];
char dlm[] = "- : ";
char *str, *sp, *in[PROCMAP_SZ];
char *end = NULL;
@@ -159,7 +160,7 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
while (fgets(line, BUFSIZE, fmap) != 0) {
str = line;
errno = 0;
- /* Split line in to fields. */
+ /* Split line into fields. */
for (i = 0; i < PROCMAP_SZ; i++) {
in[i] = strtok_r(str, &dlm[i], &sp);
if ((in[i] == NULL) || (errno != 0)) {
@@ -171,37 +172,43 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
/* Convert/Copy each field as needed. */
procmap.va_start = strtoull(in[0], &end, 16);
- if ((in[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[0] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.len = strtoull(in[1], &end, 16);
- if ((in[1] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[1] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.pgoff = strtoull(in[3], &end, 16);
- if ((in[3] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[3] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.maj = strtoul(in[4], &end, 16);
- if ((in[4] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[4] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.min = strtoul(in[5], &end, 16);
- if ((in[5] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[5] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.ino = strtoul(in[6], &end, 16);
- if ((in[6] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[6] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
@@ -218,16 +225,19 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
fclose(fmap);
if (!found) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find memory file in pid %d maps file\n", dev->device_fh, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find memory file in pid %d maps file\n",
+ dev->device_fh, pid);
return -1;
}
/* Find the guest memory file among the process fds. */
dp = opendir(procdir);
if (dp == NULL) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Cannot open pid %d process directory\n", dev->device_fh, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Cannot open pid %d process directory\n",
+ dev->device_fh, pid);
return -1;
-
}
found = 0;
@@ -254,23 +264,29 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
closedir(dp);
if (found == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find memory file for pid %d\n", dev->device_fh, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find memory file for pid %d\n",
+ dev->device_fh, pid);
return -1;
}
/* Open the shared memory file and map the memory into this process. */
fd = open(memfile, O_RDWR);
if (fd == -1) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to open %s for pid %d\n", dev->device_fh, memfile, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to open %s for pid %d\n",
+ dev->device_fh, memfile, pid);
return -1;
}
- map = mmap(0, (size_t)procmap.len, PROT_READ|PROT_WRITE ,
- MAP_POPULATE|MAP_SHARED, fd, 0);
+ map = mmap(0, (size_t)procmap.len, PROT_READ|PROT_WRITE,
+ MAP_POPULATE|MAP_SHARED, fd, 0);
close(fd);
if (map == MAP_FAILED) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Error mapping the file %s for pid %d\n", dev->device_fh, memfile, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Error mapping the file %s for pid %d\n",
+ dev->device_fh, memfile, pid);
return -1;
}
@@ -278,8 +294,11 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
mem->mapped_address = (uint64_t)(uintptr_t)map;
mem->mapped_size = procmap.len;
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mem File: %s->%s - Size: %llu - VA: %p\n", dev->device_fh,
- memfile, resolved_path, (long long unsigned)mem->mapped_size, map);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") Mem File: %s->%s - Size: %llu - VA: %p\n",
+ dev->device_fh,
+ memfile, resolved_path,
+ (long long unsigned)mem->mapped_size, map);
return 0;
}
@@ -303,7 +322,8 @@ get_config_ll_entry(struct vhost_device_ctx ctx)
}
/*
- * Searches the configuration core linked list and retrieves the device if it exists.
+ * Searches the configuration core linked list and
+ * retrieves the device if it exists.
*/
static struct virtio_net *
get_device(struct vhost_device_ctx ctx)
@@ -312,11 +332,11 @@ get_device(struct vhost_device_ctx ctx)
ll_dev = get_config_ll_entry(ctx);
- /* If a matching entry is found in the linked list, return the device in that entry. */
if (ll_dev)
return &ll_dev->dev;
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Device not found in linked list.\n", ctx.fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Device not found in linked list.\n", ctx.fh);
return NULL;
}
@@ -331,13 +351,18 @@ add_config_ll_entry(struct virtio_net_config_ll *new_ll_dev)
/* If ll_dev == NULL then this is the first device so go to else */
if (ll_dev) {
/* If the 1st device_fh != 0 then we insert our device here. */
- if (ll_dev->dev.device_fh != 0) {
+ if (ll_dev->dev.device_fh != 0) {
new_ll_dev->dev.device_fh = 0;
new_ll_dev->next = ll_dev;
ll_root = new_ll_dev;
} else {
- /* Increment through the ll until we find un unused device_fh. Insert the device at that entry*/
- while ((ll_dev->next != NULL) && (ll_dev->dev.device_fh == (ll_dev->next->dev.device_fh - 1)))
+ /*
+ * Increment through the ll until we find un unused
+ * device_fh. Insert the device at that entry.
+ */
+ while ((ll_dev->next != NULL) &&
+ (ll_dev->dev.device_fh ==
+ (ll_dev->next->dev.device_fh - 1)))
ll_dev = ll_dev->next;
new_ll_dev->dev.device_fh = ll_dev->dev.device_fh + 1;
@@ -352,7 +377,8 @@ add_config_ll_entry(struct virtio_net_config_ll *new_ll_dev)
}
/*
- * Unmap any memory, close any file descriptors and free any memory owned by a device.
+ * Unmap any memory, close any file descriptors and
+ * free any memory owned by a device.
*/
static void
cleanup_device(struct virtio_net *dev)
@@ -386,6 +412,7 @@ free_device(struct virtio_net_config_ll *ll_dev)
free(ll_dev->dev.virtqueue[VIRTIO_TXQ]);
free(ll_dev);
}
+
/*
* Remove an entry from the device configuration linked list.
*/
@@ -423,7 +450,10 @@ init_device(struct virtio_net *dev)
{
uint64_t vq_offset;
- /* Virtqueues have already been malloced so we don't want to set them to NULL. */
+ /*
+ * Virtqueues have already been malloced so
+ * we don't want to set them to NULL.
+ */
vq_offset = offsetof(struct virtio_net, mem);
/* Set everything to 0. */
@@ -491,8 +521,8 @@ new_device(struct vhost_device_ctx ctx)
}
/*
- * Function is called from the CUSE release function. This function will cleanup
- * the device and remove it from device configuration linked list.
+ * Function is called from the CUSE release function. This function will
+ * cleanup the device and remove it from device configuration linked list.
*/
static void
destroy_device(struct vhost_device_ctx ctx)
@@ -503,15 +533,19 @@ destroy_device(struct vhost_device_ctx ctx)
/* Find the linked list entry for the device to be removed. */
ll_dev_cur_ctx = get_config_ll_entry(ctx);
while (ll_dev_cur != NULL) {
- /* If the device is found or a device that doesn't exist is found then it is removed. */
+ /*
+ * If the device is found or
+ * a device that doesn't exist is found then it is removed.
+ */
if (ll_dev_cur == ll_dev_cur_ctx) {
/*
- * If the device is running on a data core then call the function to remove it from
- * the data core.
+ * If the device is running on a data core then call
+ * the function to remove it from the data core.
*/
if ((ll_dev_cur->dev.flags & VIRTIO_DEV_RUNNING))
notify_ops->destroy_device(&(ll_dev_cur->dev));
- ll_dev_cur = rm_config_ll_entry(ll_dev_cur, ll_dev_last);
+ ll_dev_cur = rm_config_ll_entry(ll_dev_cur,
+ ll_dev_last);
} else {
ll_dev_last = ll_dev_cur;
ll_dev_cur = ll_dev_cur->next;
@@ -521,7 +555,8 @@ destroy_device(struct vhost_device_ctx ctx)
/*
* Called from CUSE IOCTL: VHOST_SET_OWNER
- * This function just returns success at the moment unless the device hasn't been initialised.
+ * This function just returns success at the moment unless
+ * the device hasn't been initialised.
*/
static int
set_owner(struct vhost_device_ctx ctx)
@@ -571,7 +606,7 @@ get_features(struct vhost_device_ctx ctx, uint64_t *pu)
/*
* Called from CUSE IOCTL: VHOST_SET_FEATURES
- * We receive the negotiated set of features supported by us and the virtio device.
+ * We receive the negotiated features supported by us and the virtio device.
*/
static int
set_features(struct vhost_device_ctx ctx, uint64_t *pu)
@@ -589,13 +624,17 @@ set_features(struct vhost_device_ctx ctx, uint64_t *pu)
/* Set the vhost_hlen depending on if VIRTIO_NET_F_MRG_RXBUF is set. */
if (dev->features & (1 << VIRTIO_NET_F_MRG_RXBUF)) {
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mergeable RX buffers enabled\n", dev->device_fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") Mergeable RX buffers enabled\n",
+ dev->device_fh);
dev->virtqueue[VIRTIO_RXQ]->vhost_hlen =
sizeof(struct virtio_net_hdr_mrg_rxbuf);
dev->virtqueue[VIRTIO_TXQ]->vhost_hlen =
sizeof(struct virtio_net_hdr_mrg_rxbuf);
} else {
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mergeable RX buffers disabled\n", dev->device_fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") Mergeable RX buffers disabled\n",
+ dev->device_fh);
dev->virtqueue[VIRTIO_RXQ]->vhost_hlen =
sizeof(struct virtio_net_hdr);
dev->virtqueue[VIRTIO_TXQ]->vhost_hlen =
@@ -607,8 +646,8 @@ set_features(struct vhost_device_ctx ctx, uint64_t *pu)
/*
* Called from CUSE IOCTL: VHOST_SET_MEM_TABLE
- * This function creates and populates the memory structure for the device. This includes
- * storing offsets used to translate buffer addresses.
+ * This function creates and populates the memory structure for the device.
+ * This includes storing offsets used to translate buffer addresses.
*/
static int
set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
@@ -634,7 +673,9 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
mem = calloc(1, sizeof(struct virtio_memory) +
(sizeof(struct virtio_memory_regions) * nregions));
if (mem == NULL) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to allocate memory for dev->mem.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to allocate memory for dev->mem.\n",
+ dev->device_fh);
return -1;
}
@@ -656,15 +697,18 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
mem_regions[regionidx].userspace_addr;
LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") REGION: %u - GPA: %p - QEMU VA: %p - SIZE (%"PRIu64")\n", dev->device_fh,
- regionidx, (void *)(uintptr_t)mem->regions[regionidx].guest_phys_address,
- (void *)(uintptr_t)mem->regions[regionidx].userspace_address,
- mem->regions[regionidx].memory_size);
+ regionidx,
+ (void *)(uintptr_t)mem->regions[regionidx].guest_phys_address,
+ (void *)(uintptr_t)mem->regions[regionidx].userspace_address,
+ mem->regions[regionidx].memory_size);
/*set the base address mapping*/
if (mem->regions[regionidx].guest_phys_address == 0x0) {
- mem->base_address = mem->regions[regionidx].userspace_address;
+ mem->base_address =
+ mem->regions[regionidx].userspace_address;
/* Map VM memory file */
- if (host_memory_map(dev, mem, ctx.pid, mem->base_address) != 0) {
+ if (host_memory_map(dev, mem, ctx.pid,
+ mem->base_address) != 0) {
free(mem);
return -1;
}
@@ -678,27 +722,42 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
return -1;
}
- /* Check if all of our regions have valid mappings. Usually one does not exist in the QEMU memory file. */
+ /*
+ * Check if all of our regions have valid mappings.
+ * Usually one does not exist in the QEMU memory file.
+ */
valid_regions = mem->nregions;
for (regionidx = 0; regionidx < mem->nregions; regionidx++) {
- if ((mem->regions[regionidx].userspace_address < mem->base_address) ||
- (mem->regions[regionidx].userspace_address > (mem->base_address + mem->mapped_size)))
+ if ((mem->regions[regionidx].userspace_address <
+ mem->base_address) ||
+ (mem->regions[regionidx].userspace_address >
+ (mem->base_address + mem->mapped_size)))
valid_regions--;
}
- /* If a region does not have a valid mapping we rebuild our memory struct to contain only valid entries. */
+ /*
+ * If a region does not have a valid mapping,
+ * we rebuild our memory struct to contain only valid entries.
+ */
if (valid_regions != mem->nregions) {
LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Not all memory regions exist in the QEMU mem file. Re-populating mem structure\n",
dev->device_fh);
- /* Re-populate the memory structure with only valid regions. Invalid regions are over-written with memmove. */
+ /*
+ * Re-populate the memory structure with only valid regions.
+ * Invalid regions are over-written with memmove.
+ */
valid_regions = 0;
for (regionidx = mem->nregions; 0 != regionidx--;) {
- if ((mem->regions[regionidx].userspace_address < mem->base_address) ||
- (mem->regions[regionidx].userspace_address > (mem->base_address + mem->mapped_size))) {
- memmove(&mem->regions[regionidx], &mem->regions[regionidx + 1],
- sizeof(struct virtio_memory_regions) * valid_regions);
+ if ((mem->regions[regionidx].userspace_address <
+ mem->base_address) ||
+ (mem->regions[regionidx].userspace_address >
+ (mem->base_address + mem->mapped_size))) {
+ memmove(&mem->regions[regionidx],
+ &mem->regions[regionidx + 1],
+ sizeof(struct virtio_memory_regions) *
+ valid_regions);
} else {
valid_regions++;
}
@@ -708,12 +767,16 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
dev->mem = mem;
/*
- * Calculate the address offset for each region. This offset is used to identify the vhost virtual address
+ * Calculate the address offset for each region.
+ * This offset is used to identify the vhost virtual address
* corresponding to a QEMU guest physical address.
*/
for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) {
- dev->mem->regions[regionidx].address_offset = dev->mem->regions[regionidx].userspace_address - dev->mem->base_address
- + dev->mem->mapped_address - dev->mem->regions[regionidx].guest_phys_address;
+ dev->mem->regions[regionidx].address_offset =
+ dev->mem->regions[regionidx].userspace_address -
+ dev->mem->base_address +
+ dev->mem->mapped_address -
+ dev->mem->regions[regionidx].guest_phys_address;
}
return 0;
@@ -732,7 +795,7 @@ set_vring_num(struct vhost_device_ctx ctx, struct vhost_vring_state *state)
if (dev == NULL)
return -1;
- /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* State->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[state->index]->size = state->num;
return 0;
@@ -740,8 +803,8 @@ set_vring_num(struct vhost_device_ctx ctx, struct vhost_vring_state *state)
/*
* Called from CUSE IOCTL: VHOST_SET_VRING_ADDR
- * The virtio device sends us the desc, used and avail ring addresses. This function
- * then converts these to our address space.
+ * The virtio device sends us the desc, used and avail ring addresses.
+ * This function then converts these to our address space.
*/
static int
set_vring_addr(struct vhost_device_ctx ctx, struct vhost_vring_addr *addr)
@@ -753,31 +816,43 @@ set_vring_addr(struct vhost_device_ctx ctx, struct vhost_vring_addr *addr)
if (dev == NULL)
return -1;
- /* addr->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* addr->index refers to the queue index. The txq 1, rxq is 0. */
vq = dev->virtqueue[addr->index];
/* The addresses are converted from QEMU virtual to Vhost virtual. */
- vq->desc = (struct vring_desc *)(uintptr_t)qva_to_vva(dev, addr->desc_user_addr);
+ vq->desc = (struct vring_desc *)(uintptr_t)qva_to_vva(dev,
+ addr->desc_user_addr);
if (vq->desc == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find descriptor ring address.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find desc ring address.\n",
+ dev->device_fh);
return -1;
}
- vq->avail = (struct vring_avail *)(uintptr_t)qva_to_vva(dev, addr->avail_user_addr);
+ vq->avail = (struct vring_avail *)(uintptr_t)qva_to_vva(dev,
+ addr->avail_user_addr);
if (vq->avail == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find available ring address.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find avail ring address.\n",
+ dev->device_fh);
return -1;
}
- vq->used = (struct vring_used *)(uintptr_t)qva_to_vva(dev, addr->used_user_addr);
+ vq->used = (struct vring_used *)(uintptr_t)qva_to_vva(dev,
+ addr->used_user_addr);
if (vq->used == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find used ring address.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find used ring address.\n",
+ dev->device_fh);
return -1;
}
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address desc: %p\n", dev->device_fh, vq->desc);
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address avail: %p\n", dev->device_fh, vq->avail);
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address used: %p\n", dev->device_fh, vq->used);
+ LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address desc: %p\n",
+ dev->device_fh, vq->desc);
+ LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address avail: %p\n",
+ dev->device_fh, vq->avail);
+ LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address used: %p\n",
+ dev->device_fh, vq->used);
return 0;
}
@@ -795,7 +870,7 @@ set_vring_base(struct vhost_device_ctx ctx, struct vhost_vring_state *state)
if (dev == NULL)
return -1;
- /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* State->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[state->index]->last_used_idx = state->num;
dev->virtqueue[state->index]->last_used_idx_res = state->num;
@@ -817,15 +892,15 @@ get_vring_base(struct vhost_device_ctx ctx, uint32_t index,
return -1;
state->index = index;
- /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* State->index refers to the queue index. The txq is 1, rxq is 0. */
state->num = dev->virtqueue[state->index]->last_used_idx;
return 0;
}
/*
- * This function uses the eventfd_link kernel module to copy an eventfd file descriptor
- * provided by QEMU in to our process space.
+ * This function uses the eventfd_link kernel module to copy an eventfd file
+ * descriptor provided by QEMU in to our process space.
*/
static int
eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
@@ -835,7 +910,9 @@ eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
/* Open the character device to the kernel module. */
eventfd_link = open(eventfd_cdev, O_RDWR);
if (eventfd_link < 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") eventfd_link module is not loaded\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") eventfd_link module is not loaded\n",
+ dev->device_fh);
return -1;
}
@@ -844,18 +921,19 @@ eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
close(eventfd_link);
if (ret < 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") EVENTFD_COPY ioctl failed\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") EVENTFD_COPY ioctl failed\n",
+ dev->device_fh);
return -1;
}
-
return 0;
}
/*
* Called from CUSE IOCTL: VHOST_SET_VRING_CALL
- * The virtio device sends an eventfd to interrupt the guest. This fd gets copied in
- * to our process space.
+ * The virtio device sends an eventfd to interrupt the guest. This fd gets
+ * copied into our process space.
*/
static int
set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
@@ -868,7 +946,7 @@ set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
if (dev == NULL)
return -1;
- /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* file->index refers to the queue index. The txq is 1, rxq is 0. */
vq = dev->virtqueue[file->index];
if (vq->kickfd)
@@ -888,8 +966,8 @@ set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
/*
* Called from CUSE IOCTL: VHOST_SET_VRING_KICK
- * The virtio device sends an eventfd that it can use to notify us. This fd gets copied in
- * to our process space.
+ * The virtio device sends an eventfd that it can use to notify us.
+ * This fd gets copied into our process space.
*/
static int
set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
@@ -902,7 +980,7 @@ set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
if (dev == NULL)
return -1;
- /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* file->index refers to the queue index. The txq is 1, rxq is 0. */
vq = dev->virtqueue[file->index];
if (vq->callfd)
@@ -922,10 +1000,12 @@ set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
/*
* Called from CUSE IOCTL: VHOST_NET_SET_BACKEND
- * To complete device initialisation when the virtio driver is loaded we are provided with a
- * valid fd for a tap device (not used by us). If this happens then we can add the device to a
- * data core. When the virtio driver is removed we get fd=-1. At that point we remove the device
- * from the data core. The device will still exist in the device configuration linked list.
+ * To complete device initialisation when the virtio driver is loaded,
+ * we are provided with a valid fd for a tap device (not used by us).
+ * If this happens then we can add the device to a data core.
+ * When the virtio driver is removed we get fd=-1.
+ * At that point we remove the device from the data core.
+ * The device will still exist in the device configuration linked list.
*/
static int
set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
@@ -936,10 +1016,13 @@ set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
if (dev == NULL)
return -1;
- /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* file->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[file->index]->backend = file->fd;
- /* If the device isn't already running and both backend fds are set we add the device. */
+ /*
+ * If the device isn't already running and both backend fds are set,
+ * we add the device.
+ */
if (!(dev->flags & VIRTIO_DEV_RUNNING)) {
if (((int)dev->virtqueue[VIRTIO_TXQ]->backend != VIRTIO_DEV_STOPPED) &&
((int)dev->virtqueue[VIRTIO_RXQ]->backend != VIRTIO_DEV_STOPPED))
@@ -952,8 +1035,8 @@ set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
}
/*
- * Function pointers are set for the device operations to allow CUSE to call functions
- * when an IOCTL, device_add or device_release is received.
+ * Function pointers are set for the device operations to allow CUSE to call
+ * functions when an IOCTL, device_add or device_release is received.
*/
static const struct vhost_net_device_ops vhost_device_ops = {
.new_device = new_device,
@@ -991,11 +1074,13 @@ int rte_vhost_enable_guest_notification(struct virtio_net *dev,
uint16_t queue_id, int enable)
{
if (enable) {
- RTE_LOG(ERR, VHOST_CONFIG, "guest notification isn't supported.\n");
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "guest notification isn't supported.\n");
return -1;
}
- dev->virtqueue[queue_id]->used->flags = enable ? 0 : VRING_USED_F_NO_NOTIFY;
+ dev->virtqueue[queue_id]->used->flags =
+ enable ? 0 : VRING_USED_F_NO_NOTIFY;
return 0;
}
--
1.8.1.4
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
2014-11-05 21:55 ` Xie, Huawei
@ 2014-11-05 22:06 ` Thomas Monjalon
0 siblings, 0 replies; 10+ messages in thread
From: Thomas Monjalon @ 2014-11-05 22:06 UTC (permalink / raw)
To: Xie, Huawei; +Cc: dev
2014-11-05 21:55, Xie, Huawei:
> > 2014-11-05 21:21, Xie, Huawei:
> Btw, for alignment in structure, I see different projects use different way,
> some use tab, and some use space(between type and var), do we have rules for this?
> {
> Type var1
> Type var2
> }
I prefer using spaces for such alignments. But Linux style is to use a mix of
tab and space with tab being equivalent to 8 spaces.
We have to write clear rules about such things and have our own checkpatch.
For release 1.8, we still don't care about this level of details.
Please let's re-open this topic after the release.
--
Thomas
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
2014-11-05 21:25 ` Thomas Monjalon
@ 2014-11-05 21:55 ` Xie, Huawei
2014-11-05 22:06 ` Thomas Monjalon
0 siblings, 1 reply; 10+ messages in thread
From: Xie, Huawei @ 2014-11-05 21:55 UTC (permalink / raw)
To: Thomas Monjalon; +Cc: dev
> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> Sent: Wednesday, November 05, 2014 2:25 PM
> To: Xie, Huawei
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
>
> 2014-11-05 21:21, Xie, Huawei:
> > Thomas:
> > I checked before. checkpatch reports 9 warnings, "over 80 characters" and
> "prefer pr_deubg".
> > This code style fixes code style issue only, not the pr_debug/printk issue.
> Thoughts?
>
> Using pr_debug is a code style fix.
>
Ok, will also fix this.
If there are other code style issue you want to be fixed in this patch, please let me know.
Btw, for alignment in structure, I see different projects use different way, some use tab, and some use space(between type and var), do we have rules for this?
{
Type var1
Type var2
}
> > Besides, I don't understand the MISORDERED_TYPE.
>
> You should replace (long long unsigned) by (unsigned long long).
Check patch at my side doesn't report warnings about the patch. I remember I have also check against the source file. Will double check and fix those.
>
> > > -----Original Message-----
> > > From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> > > Sent: Wednesday, November 05, 2014 1:42 PM
> > > To: Xie, Huawei
> > > Cc: dev@dpdk.org
> > > Subject: Re: [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
> > >
> > > Hi Huawei,
> > >
> > > checkpatch.pl reports some errors of types PREFER_PR_LEVEL
> > > and MISORDERED_TYPE.
> > >
> > > --
> > > Thomas
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
2014-11-05 21:21 ` Xie, Huawei
@ 2014-11-05 21:25 ` Thomas Monjalon
2014-11-05 21:55 ` Xie, Huawei
0 siblings, 1 reply; 10+ messages in thread
From: Thomas Monjalon @ 2014-11-05 21:25 UTC (permalink / raw)
To: Xie, Huawei; +Cc: dev
2014-11-05 21:21, Xie, Huawei:
> Thomas:
> I checked before. checkpatch reports 9 warnings, "over 80 characters" and "prefer pr_deubg".
> This code style fixes code style issue only, not the pr_debug/printk issue. Thoughts?
Using pr_debug is a code style fix.
> Besides, I don't understand the MISORDERED_TYPE.
You should replace (long long unsigned) by (unsigned long long).
> > -----Original Message-----
> > From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> > Sent: Wednesday, November 05, 2014 1:42 PM
> > To: Xie, Huawei
> > Cc: dev@dpdk.org
> > Subject: Re: [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
> >
> > Hi Huawei,
> >
> > checkpatch.pl reports some errors of types PREFER_PR_LEVEL
> > and MISORDERED_TYPE.
> >
> > --
> > Thomas
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
2014-11-05 20:41 ` Thomas Monjalon
@ 2014-11-05 21:21 ` Xie, Huawei
2014-11-05 21:25 ` Thomas Monjalon
0 siblings, 1 reply; 10+ messages in thread
From: Xie, Huawei @ 2014-11-05 21:21 UTC (permalink / raw)
To: Thomas Monjalon; +Cc: dev
Thomas:
I checked before. checkpatch reports 9 warnings, "over 80 characters" and "prefer pr_deubg".
This code style fixes code style issue only, not the pr_debug/printk issue. Thoughts?
Besides, I don't understand the MISORDERED_TYPE.
> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> Sent: Wednesday, November 05, 2014 1:42 PM
> To: Xie, Huawei
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
>
> Hi Huawei,
>
> checkpatch.pl reports some errors of types PREFER_PR_LEVEL
> and MISORDERED_TYPE.
>
> --
> Thomas
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
2014-11-05 17:03 Huawei Xie
@ 2014-11-05 20:41 ` Thomas Monjalon
2014-11-05 21:21 ` Xie, Huawei
0 siblings, 1 reply; 10+ messages in thread
From: Thomas Monjalon @ 2014-11-05 20:41 UTC (permalink / raw)
To: Huawei Xie; +Cc: dev
Hi Huawei,
checkpatch.pl reports some errors of types PREFER_PR_LEVEL
and MISORDERED_TYPE.
--
Thomas
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
2014-11-05 9:09 ` Thomas Monjalon
@ 2014-11-05 17:07 ` Xie, Huawei
0 siblings, 0 replies; 10+ messages in thread
From: Xie, Huawei @ 2014-11-05 17:07 UTC (permalink / raw)
To: Thomas Monjalon; +Cc: dev
:(.
Resent done. Please drop this patch.
> -----Original Message-----
> From: Thomas Monjalon [mailto:thomas.monjalon@6wind.com]
> Sent: Wednesday, November 05, 2014 2:10 AM
> To: Xie, Huawei
> Cc: dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
>
> Hi Huawei,
>
> Please set a Signed-off in your patch.
>
> 2014-11-05 12:42, Huawei Xie:
> > This patch fixes code style issues and refines some comments in vhost library.
> >
> >
> > ---
> > lib/librte_vhost/eventfd_link/eventfd_link.c | 244 ++++++++++-----------
> > lib/librte_vhost/eventfd_link/eventfd_link.h | 127 ++++++-----
> > lib/librte_vhost/rte_virtio_net.h | 3 +-
> > lib/librte_vhost/vhost-net-cdev.c | 187 +++++++++-------
> > lib/librte_vhost/vhost_rxtx.c | 13 +-
> > lib/librte_vhost/virtio-net.c | 317 +++++++++++++++++----------
> > 6 files changed, 494 insertions(+), 397 deletions(-)
> >
> > diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.c
> b/lib/librte_vhost/eventfd_link/eventfd_link.c
> > index fc0653a..542ec2c 100644
> > --- a/lib/librte_vhost/eventfd_link/eventfd_link.c
> > +++ b/lib/librte_vhost/eventfd_link/eventfd_link.c
> > @@ -1,26 +1,26 @@
> > /*-
> > - * * GPL LICENSE SUMMARY
> > - * *
> > - * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> > - * *
> > - * * This program is free software; you can redistribute it and/or modify
> > - * * it under the terms of version 2 of the GNU General Public License as
> > - * * published by the Free Software Foundation.
> > - * *
> > - * * This program is distributed in the hope that it will be useful, but
> > - * * WITHOUT ANY WARRANTY; without even the implied warranty of
> > - * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> GNU
> > - * * General Public License for more details.
> > - * *
> > - * * You should have received a copy of the GNU General Public License
> > - * * along with this program; if not, write to the Free Software
> > - * * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301
> USA.
> > - * * The full GNU General Public License is included in this distribution
> > - * * in the file called LICENSE.GPL.
> > - * *
> > - * * Contact Information:
> > - * * Intel Corporation
> > - * */
> > + * GPL LICENSE SUMMARY
> > + *
> > + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> > + *
> > + * This program is free software; you can redistribute it and/or modify
> > + * it under the terms of version 2 of the GNU General Public License as
> > + * published by the Free Software Foundation.
> > + *
> > + * This program is distributed in the hope that it will be useful, but
> > + * WITHOUT ANY WARRANTY; without even the implied warranty of
> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> GNU
> > + * General Public License for more details.
> > + *
> > + * You should have received a copy of the GNU General Public License
> > + * along with this program; if not, write to the Free Software
> > + * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
> > + * The full GNU General Public License is included in this distribution
> > + * in the file called LICENSE.GPL.
> > + *
> > + * Contact Information:
> > + * Intel Corporation
> > + */
> >
> > #include <linux/eventfd.h>
> > #include <linux/miscdevice.h>
> > @@ -42,15 +42,15 @@
> > * get_files_struct is copied from fs/file.c
> > */
> > struct files_struct *
> > -get_files_struct (struct task_struct *task)
> > +get_files_struct(struct task_struct *task)
> > {
> > struct files_struct *files;
> >
> > - task_lock (task);
> > + task_lock(task);
> > files = task->files;
> > if (files)
> > - atomic_inc (&files->count);
> > - task_unlock (task);
> > + atomic_inc(&files->count);
> > + task_unlock(task);
> >
> > return files;
> > }
> > @@ -59,17 +59,15 @@ get_files_struct (struct task_struct *task)
> > * put_files_struct is extracted from fs/file.c
> > */
> > void
> > -put_files_struct (struct files_struct *files)
> > +put_files_struct(struct files_struct *files)
> > {
> > - if (atomic_dec_and_test (&files->count))
> > - {
> > - BUG ();
> > - }
> > + if (atomic_dec_and_test(&files->count))
> > + BUG();
> > }
> >
> >
> > static long
> > -eventfd_link_ioctl (struct file *f, unsigned int ioctl, unsigned long arg)
> > +eventfd_link_ioctl(struct file *f, unsigned int ioctl, unsigned long arg)
> > {
> > void __user *argp = (void __user *) arg;
> > struct task_struct *task_target = NULL;
> > @@ -78,96 +76,88 @@ eventfd_link_ioctl (struct file *f, unsigned int ioctl,
> unsigned long arg)
> > struct fdtable *fdt;
> > struct eventfd_copy eventfd_copy;
> >
> > - switch (ioctl)
> > - {
> > - case EVENTFD_COPY:
> > - if (copy_from_user (&eventfd_copy, argp, sizeof (struct
> eventfd_copy)))
> > - return -EFAULT;
> > -
> > - /*
> > - * Find the task struct for the target pid
> > - */
> > - task_target =
> > - pid_task (find_vpid (eventfd_copy.target_pid),
> PIDTYPE_PID);
> > - if (task_target == NULL)
> > - {
> > - printk (KERN_DEBUG "Failed to get mem ctx for
> target pid\n");
> > - return -EFAULT;
> > - }
> > -
> > - files = get_files_struct (current);
> > - if (files == NULL)
> > - {
> > - printk (KERN_DEBUG "Failed to get files
> struct\n");
> > - return -EFAULT;
> > - }
> > -
> > - rcu_read_lock ();
> > - file = fcheck_files (files, eventfd_copy.source_fd);
> > - if (file)
> > - {
> > - if (file->f_mode & FMODE_PATH
> > - || !atomic_long_inc_not_zero
> (&file->f_count))
> > - file = NULL;
> > - }
> > - rcu_read_unlock ();
> > - put_files_struct (files);
> > -
> > - if (file == NULL)
> > - {
> > - printk (KERN_DEBUG "Failed to get file from
> source pid\n");
> > - return 0;
> > - }
> > -
> > - /*
> > - * Release the existing eventfd in the source process
> > - */
> > - spin_lock (&files->file_lock);
> > - filp_close (file, files);
> > - fdt = files_fdtable (files);
> > - fdt->fd[eventfd_copy.source_fd] = NULL;
> > - spin_unlock (&files->file_lock);
> > -
> > - /*
> > - * Find the file struct associated with the target fd.
> > - */
> > -
> > - files = get_files_struct (task_target);
> > - if (files == NULL)
> > - {
> > - printk (KERN_DEBUG "Failed to get files
> struct\n");
> > - return -EFAULT;
> > - }
> > -
> > - rcu_read_lock ();
> > - file = fcheck_files (files, eventfd_copy.target_fd);
> > - if (file)
> > - {
> > - if (file->f_mode & FMODE_PATH
> > - || !atomic_long_inc_not_zero
> (&file->f_count))
> > + switch (ioctl) {
> > + case EVENTFD_COPY:
> > + if (copy_from_user(&eventfd_copy, argp,
> > + sizeof(struct eventfd_copy)))
> > + return -EFAULT;
> > +
> > + /*
> > + * Find the task struct for the target pid
> > + */
> > + task_target =
> > + pid_task(find_vpid(eventfd_copy.target_pid),
> PIDTYPE_PID);
> > + if (task_target == NULL) {
> > + printk(KERN_DEBUG "Failed to get mem ctx for target
> pid\n");
> > + return -EFAULT;
> > + }
> > +
> > + files = get_files_struct(current);
> > + if (files == NULL) {
> > + printk(KERN_DEBUG "Failed to get files struct\n");
> > + return -EFAULT;
> > + }
> > +
> > + rcu_read_lock();
> > + file = fcheck_files(files, eventfd_copy.source_fd);
> > + if (file) {
> > + if (file->f_mode & FMODE_PATH ||
> > + !atomic_long_inc_not_zero(&file->f_count))
> > + file = NULL;
> > + }
> > + rcu_read_unlock();
> > + put_files_struct(files);
> > +
> > + if (file == NULL) {
> > + printk(KERN_DEBUG "Failed to get file from source
> pid\n");
> > + return 0;
> > + }
> > +
> > + /*
> > + * Release the existing eventfd in the source process
> > + */
> > + spin_lock(&files->file_lock);
> > + filp_close(file, files);
> > + fdt = files_fdtable(files);
> > + fdt->fd[eventfd_copy.source_fd] = NULL;
> > + spin_unlock(&files->file_lock);
> > +
> > + /*
> > + * Find the file struct associated with the target fd.
> > + */
> > +
> > + files = get_files_struct(task_target);
> > + if (files == NULL) {
> > + printk(KERN_DEBUG "Failed to get files struct\n");
> > + return -EFAULT;
> > + }
> > +
> > + rcu_read_lock();
> > + file = fcheck_files(files, eventfd_copy.target_fd);
> > + if (file) {
> > + if (file->f_mode & FMODE_PATH ||
> > + !atomic_long_inc_not_zero(&file->f_count))
> > file = NULL;
> > - }
> > - rcu_read_unlock ();
> > - put_files_struct (files);
> > -
> > - if (file == NULL)
> > - {
> > - printk (KERN_DEBUG "Failed to get file from
> target pid\n");
> > - return 0;
> > - }
> > + }
> > + rcu_read_unlock();
> > + put_files_struct(files);
> >
> > + if (file == NULL) {
> > + printk(KERN_DEBUG "Failed to get file from target
> pid\n");
> > + return 0;
> > + }
> >
> > - /*
> > - * Install the file struct from the target process into the
> > - * file desciptor of the source process,
> > - */
> > + /*
> > + * Install the file struct from the target process into the
> > + * file desciptor of the source process,
> > + */
> >
> > - fd_install (eventfd_copy.source_fd, file);
> > + fd_install(eventfd_copy.source_fd, file);
> >
> > - return 0;
> > + return 0;
> >
> > - default:
> > - return -ENOIOCTLCMD;
> > + default:
> > + return -ENOIOCTLCMD;
> > }
> > }
> >
> > @@ -183,23 +173,23 @@ static struct miscdevice eventfd_link_misc = {
> > };
> >
> > static int __init
> > -eventfd_link_init (void)
> > +eventfd_link_init(void)
> > {
> > - return misc_register (&eventfd_link_misc);
> > + return misc_register(&eventfd_link_misc);
> > }
> >
> > -module_init (eventfd_link_init);
> > +module_init(eventfd_link_init);
> >
> > static void __exit
> > -eventfd_link_exit (void)
> > +eventfd_link_exit(void)
> > {
> > - misc_deregister (&eventfd_link_misc);
> > + misc_deregister(&eventfd_link_misc);
> > }
> >
> > -module_exit (eventfd_link_exit);
> > +module_exit(eventfd_link_exit);
> >
> > -MODULE_VERSION ("0.0.1");
> > -MODULE_LICENSE ("GPL v2");
> > -MODULE_AUTHOR ("Anthony Fee");
> > -MODULE_DESCRIPTION ("Link eventfd");
> > -MODULE_ALIAS ("devname:eventfd-link");
> > +MODULE_VERSION("0.0.1");
> > +MODULE_LICENSE("GPL v2");
> > +MODULE_AUTHOR("Anthony Fee");
> > +MODULE_DESCRIPTION("Link eventfd");
> > +MODULE_ALIAS("devname:eventfd-link");
> > diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.h
> b/lib/librte_vhost/eventfd_link/eventfd_link.h
> > index a32a8dd..ea619ec 100644
> > --- a/lib/librte_vhost/eventfd_link/eventfd_link.h
> > +++ b/lib/librte_vhost/eventfd_link/eventfd_link.h
> > @@ -1,79 +1,76 @@
> > /*-
> > - * * This file is provided under a dual BSD/GPLv2 license. When using or
> > - * * redistributing this file, you may do so under either license.
> > - * *
> > - * * GPL LICENSE SUMMARY
> > - * *
> > - * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> > - * *
> > - * * This program is free software; you can redistribute it and/or modify
> > - * * it under the terms of version 2 of the GNU General Public License as
> > - * * published by the Free Software Foundation.
> > - * *
> > - * * This program is distributed in the hope that it will be useful, but
> > - * * WITHOUT ANY WARRANTY; without even the implied warranty of
> > - * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> GNU
> > - * * General Public License for more details.
> > - * *
> > - * * You should have received a copy of the GNU General Public License
> > - * * along with this program; if not, write to the Free Software
> > - * * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301
> USA.
> > - * * The full GNU General Public License is included in this distribution
> > - * * in the file called LICENSE.GPL.
> > - * *
> > - * * Contact Information:
> > - * * Intel Corporation
> > - * *
> > - * * BSD LICENSE
> > - * *
> > - * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> > - * * All rights reserved.
> > - * *
> > - * * Redistribution and use in source and binary forms, with or without
> > - * * modification, are permitted provided that the following conditions
> > - * * are met:
> > - * *
> > - * * * Redistributions of source code must retain the above copyright
> > - * * notice, this list of conditions and the following disclaimer.
> > - * * * Redistributions in binary form must reproduce the above copyright
> > - * * notice, this list of conditions and the following disclaimer in
> > - * * the documentation and/or other materials provided with the
> > - * * distribution.
> > - * * * Neither the name of Intel Corporation nor the names of its
> > - * * contributors may be used to endorse or promote products derived
> > - * * from this software without specific prior written permission.
> > - * *
> > - * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
> CONTRIBUTORS
> > - * * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
> NOT
> > - * * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
> FITNESS FOR
> > - * * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
> COPYRIGHT
> > - * * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
> INCIDENTAL,
> > - * * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
> BUT NOT
> > - * * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
> LOSS OF USE,
> > - * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
> AND ON ANY
> > - * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
> TORT
> > - * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
> OF THE USE
> > - * * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
> DAMAGE.
> > - * *
> > - * */
> > + * This file is provided under a dual BSD/GPLv2 license. When using or
> > + * redistributing this file, you may do so under either license.
> > + *
> > + * GPL LICENSE SUMMARY
> > + *
> > + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> > + *
> > + * This program is free software; you can redistribute it and/or modify
> > + * it under the terms of version 2 of the GNU General Public License as
> > + * published by the Free Software Foundation.
> > + *
> > + * This program is distributed in the hope that it will be useful, but
> > + * WITHOUT ANY WARRANTY; without even the implied warranty of
> > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> GNU
> > + * General Public License for more details.
> > + *
> > + * You should have received a copy of the GNU General Public License
> > + * along with this program; if not, write to the Free Software
> > + * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
> > + * The full GNU General Public License is included in this distribution
> > + * in the file called LICENSE.GPL.
> > + *
> > + * Contact Information:
> > + * Intel Corporation
> > + *
> > + * BSD LICENSE
> > + *
> > + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> > + * All rights reserved.
> > + *
> > + * Redistribution and use in source and binary forms, with or without
> > + * modification, are permitted provided that the following conditions
> > + * are met:
> > + *
> > + * Redistributions of source code must retain the above copyright
> > + * notice, this list of conditions and the following disclaimer.
> > + * Redistributions in binary form must reproduce the above copyright
> > + * notice, this list of conditions and the following disclaimer in
> > + * the documentation and/or other materials provided with the
> > + * distribution.
> > + * Neither the name of Intel Corporation nor the names of its
> > + * contributors may be used to endorse or promote products derived
> > + * from this software without specific prior written permission.
> > + *
> > + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
> CONTRIBUTORS
> > + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
> NOT
> > + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
> FITNESS FOR
> > + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
> COPYRIGHT
> > + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
> INCIDENTAL,
> > + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
> NOT
> > + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
> OF USE,
> > + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
> AND ON ANY
> > + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
> TORT
> > + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
> THE USE
> > + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
> DAMAGE.
> > + *
> > + */
> >
> > #ifndef _EVENTFD_LINK_H_
> > #define _EVENTFD_LINK_H_
> >
> > /*
> > - * ioctl to copy an fd entry in calling process to an fd in a target process
> > + * ioctl to copy an fd entry in calling process to an fd in a target process
> > */
> > #define EVENTFD_COPY 1
> >
> > /*
> > - * arguements for the EVENTFD_COPY ioctl
> > + * arguements for the EVENTFD_COPY ioctl
> > */
> > struct eventfd_copy {
> > - // fd in the target pid
> > - unsigned target_fd;
> > - // fd in the calling pid
> > - unsigned source_fd;
> > - // pid of the target pid
> > - pid_t target_pid;
> > + unsigned target_fd; /* fd in the target pid */
> > + unsigned source_fd; /* fd in the calling pid */
> > + pid_t target_pid; /* pid of the target pid */
> > };
> > #endif /* _EVENTFD_LINK_H_ */
> > diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h
> > index b6548a1..00b1328 100644
> > --- a/lib/librte_vhost/rte_virtio_net.h
> > +++ b/lib/librte_vhost/rte_virtio_net.h
> > @@ -90,8 +90,7 @@ struct vhost_virtqueue {
> > /**
> > * Device structure contains all configuration information relating to the
> device.
> > */
> > -struct virtio_net
> > -{
> > +struct virtio_net {
> > struct vhost_virtqueue *virtqueue[VIRTIO_QNUM]; /**< Contains
> all virtqueue information. */
> > struct virtio_memory *mem; /**< QEMU memory and
> memory region information. */
> > uint64_t features; /**< Negotiated feature set.
> */
> > diff --git a/lib/librte_vhost/vhost-net-cdev.c b/lib/librte_vhost/vhost-net-
> cdev.c
> > index 91ff0d8..57c76cb 100644
> > --- a/lib/librte_vhost/vhost-net-cdev.c
> > +++ b/lib/librte_vhost/vhost-net-cdev.c
> > @@ -46,21 +46,21 @@
> >
> > #include "vhost-net-cdev.h"
> >
> > -#define FUSE_OPT_DUMMY "\0\0"
> > -#define FUSE_OPT_FORE "-f\0\0"
> > -#define FUSE_OPT_NOMULTI "-s\0\0"
> > +#define FUSE_OPT_DUMMY "\0\0"
> > +#define FUSE_OPT_FORE "-f\0\0"
> > +#define FUSE_OPT_NOMULTI "-s\0\0"
> >
> > -static const uint32_t default_major = 231;
> > -static const uint32_t default_minor = 1;
> > -static const char cuse_device_name[] = "/dev/cuse";
> > -static const char default_cdev[] = "vhost-net";
> > +static const uint32_t default_major = 231;
> > +static const uint32_t default_minor = 1;
> > +static const char cuse_device_name[] = "/dev/cuse";
> > +static const char default_cdev[] = "vhost-net";
> >
> > -static struct fuse_session *session;
> > -static struct vhost_net_device_ops const *ops;
> > +static struct fuse_session *session;
> > +static struct vhost_net_device_ops const *ops;
> >
> > /*
> > - * Returns vhost_device_ctx from given fuse_req_t. The index is populated
> later when
> > - * the device is added to the device linked list.
> > + * Returns vhost_device_ctx from given fuse_req_t. The index is populated
> later
> > + * when the device is added to the device linked list.
> > */
> > static struct vhost_device_ctx
> > fuse_req_to_vhost_ctx(fuse_req_t req, struct fuse_file_info *fi)
> > @@ -75,7 +75,8 @@ fuse_req_to_vhost_ctx(fuse_req_t req, struct
> fuse_file_info *fi)
> > }
> >
> > /*
> > - * When the device is created in QEMU it gets initialised here and added to the
> device linked list.
> > + * When the device is created in QEMU it gets initialised here and
> > + * added to the device linked list.
> > */
> > static void
> > vhost_net_open(fuse_req_t req, struct fuse_file_info *fi)
> > @@ -91,7 +92,8 @@ vhost_net_open(fuse_req_t req, struct fuse_file_info *fi)
> >
> > fi->fh = err;
> >
> > - RTE_LOG(INFO, VHOST_CONFIG, "(%"PRIu64") Device configuration
> started\n", fi->fh);
> > + RTE_LOG(INFO, VHOST_CONFIG,
> > + "(%"PRIu64") Device configuration started\n", fi->fh);
> > fuse_reply_open(req, fi);
> > }
> >
> > @@ -113,8 +115,8 @@ vhost_net_release(fuse_req_t req, struct
> fuse_file_info *fi)
> > * Boilerplate code for CUSE IOCTL
> > * Implicit arguments: ctx, req, result.
> > */
> > -#define VHOST_IOCTL(func) do { \
> > - result = (func)(ctx); \
> > +#define VHOST_IOCTL(func) do { \
> > + result = (func)(ctx); \
> > fuse_reply_ioctl(req, result, NULL, 0); \
> > } while (0)
> >
> > @@ -122,57 +124,58 @@ vhost_net_release(fuse_req_t req, struct
> fuse_file_info *fi)
> > * Boilerplate IOCTL RETRY
> > * Implicit arguments: req.
> > */
> > -#define VHOST_IOCTL_RETRY(size_r, size_w) do { \
> > - struct iovec iov_r = { arg, (size_r) }; \
> > - struct iovec iov_w = { arg, (size_w) }; \
> > - fuse_reply_ioctl_retry(req, &iov_r, (size_r)?1:0, &iov_w, (size_w)?1:0);
> \
> > +#define VHOST_IOCTL_RETRY(size_r, size_w) do { \
> > + struct iovec iov_r = { arg, (size_r) }; \
> > + struct iovec iov_w = { arg, (size_w) }; \
> > + fuse_reply_ioctl_retry(req, &iov_r, \
> > + (size_r) ? 1 : 0, &iov_w, (size_w) ? 1 : 0);\
> > } while (0)
> >
> > /*
> > * Boilerplate code for CUSE Read IOCTL
> > * Implicit arguments: ctx, req, result, in_bufsz, in_buf.
> > */
> > -#define VHOST_IOCTL_R(type, var, func) do { \
> > - if (!in_bufsz) { \
> > - VHOST_IOCTL_RETRY(sizeof(type), 0); \
> > - } else { \
> > - (var) = *(const type*) in_buf; \
> > - result = func(ctx, &(var)); \
> > - fuse_reply_ioctl(req, result, NULL, 0); \
> > - } \
> > +#define VHOST_IOCTL_R(type, var, func) do { \
> > + if (!in_bufsz) { \
> > + VHOST_IOCTL_RETRY(sizeof(type), 0);\
> > + } else { \
> > + (var) = *(const type*)in_buf; \
> > + result = func(ctx, &(var)); \
> > + fuse_reply_ioctl(req, result, NULL, 0);\
> > + } \
> > } while (0)
> >
> > /*
> > - * Boilerplate code for CUSE Write IOCTL
> > + * Boilerplate code for CUSE Write IOCTL
> > * Implicit arguments: ctx, req, result, out_bufsz.
> > */
> > -#define VHOST_IOCTL_W(type, var, func) do { \
> > - if (!out_bufsz) { \
> > - VHOST_IOCTL_RETRY(0, sizeof(type)); \
> > - } else { \
> > - result = (func)(ctx, &(var)); \
> > - fuse_reply_ioctl(req, result, &(var), sizeof(type)); \
> > - } \
> > +#define VHOST_IOCTL_W(type, var, func) do { \
> > + if (!out_bufsz) { \
> > + VHOST_IOCTL_RETRY(0, sizeof(type));\
> > + } else { \
> > + result = (func)(ctx, &(var));\
> > + fuse_reply_ioctl(req, result, &(var), sizeof(type));\
> > + } \
> > } while (0)
> >
> > /*
> > * Boilerplate code for CUSE Read/Write IOCTL
> > * Implicit arguments: ctx, req, result, in_bufsz, in_buf.
> > */
> > -#define VHOST_IOCTL_RW(type1, var1, type2, var2, func) do { \
> > - if (!in_bufsz) { \
> > - VHOST_IOCTL_RETRY(sizeof(type1), sizeof(type2)); \
> > - } else { \
> > - (var1) = *(const type1*) (in_buf); \
> > - result = (func)(ctx, (var1), &(var2)); \
> > - fuse_reply_ioctl(req, result, &(var2), sizeof(type2)); \
> > - } \
> > +#define VHOST_IOCTL_RW(type1, var1, type2, var2, func) do { \
> > + if (!in_bufsz) { \
> > + VHOST_IOCTL_RETRY(sizeof(type1), sizeof(type2));\
> > + } else { \
> > + (var1) = *(const type1*) (in_buf); \
> > + result = (func)(ctx, (var1), &(var2)); \
> > + fuse_reply_ioctl(req, result, &(var2), sizeof(type2));\
> > + } \
> > } while (0)
> >
> > /*
> > - * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on
> > - * the type of IOCTL a buffer is requested to read or to write. This
> > - * request is handled by FUSE and the buffer is then given to CUSE.
> > + * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on the
> type
> > + * of IOCTL a buffer is requested to read or to write. This request is handled
> > + * by FUSE and the buffer is then given to CUSE.
> > */
> > static void
> > vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
> > @@ -189,33 +192,39 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
> >
> > switch (cmd) {
> > case VHOST_NET_SET_BACKEND:
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL:
> VHOST_NET_SET_BACKEND\n", ctx.fh);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n",
> ctx.fh);
> > VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_backend);
> > break;
> >
> > case VHOST_GET_FEATURES:
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL:
> VHOST_GET_FEATURES\n", ctx.fh);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: VHOST_GET_FEATURES\n", ctx.fh);
> > VHOST_IOCTL_W(uint64_t, features, ops->get_features);
> > break;
> >
> > case VHOST_SET_FEATURES:
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL:
> VHOST_SET_FEATURES\n", ctx.fh);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: VHOST_SET_FEATURES\n", ctx.fh);
> > VHOST_IOCTL_R(uint64_t, features, ops->set_features);
> > break;
> >
> > case VHOST_RESET_OWNER:
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL:
> VHOST_RESET_OWNER\n", ctx.fh);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: VHOST_RESET_OWNER\n", ctx.fh);
> > VHOST_IOCTL(ops->reset_owner);
> > break;
> >
> > case VHOST_SET_OWNER:
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL:
> VHOST_SET_OWNER\n", ctx.fh);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: VHOST_SET_OWNER\n", ctx.fh);
> > VHOST_IOCTL(ops->set_owner);
> > break;
> >
> > case VHOST_SET_MEM_TABLE:
> > /*TODO fix race condition.*/
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL:
> VHOST_SET_MEM_TABLE\n", ctx.fh);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n",
> ctx.fh);
> > static struct vhost_memory mem_temp;
> >
> > switch (in_bufsz) {
> > @@ -227,7 +236,9 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
> > mem_temp = *(const struct vhost_memory *) in_buf;
> >
> > if (mem_temp.nregions > 0) {
> > - VHOST_IOCTL_RETRY(sizeof(struct
> vhost_memory) + (sizeof(struct vhost_memory_region) * mem_temp.nregions),
> 0);
> > + VHOST_IOCTL_RETRY(sizeof(struct
> vhost_memory) +
> > + (sizeof(struct vhost_memory_region) *
> > + mem_temp.nregions), 0);
> > } else {
> > result = -1;
> > fuse_reply_ioctl(req, result, NULL, 0);
> > @@ -235,56 +246,70 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
> > break;
> >
> > default:
> > - result = ops->set_mem_table(ctx, in_buf,
> mem_temp.nregions);
> > + result = ops->set_mem_table(ctx,
> > + in_buf, mem_temp.nregions);
> > if (result)
> > fuse_reply_err(req, EINVAL);
> > else
> > fuse_reply_ioctl(req, result, NULL, 0);
> > -
> > }
> > -
> > break;
> >
> > case VHOST_SET_VRING_NUM:
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL:
> VHOST_SET_VRING_NUM\n", ctx.fh);
> > - VHOST_IOCTL_R(struct vhost_vring_state, state, ops-
> >set_vring_num);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: VHOST_SET_VRING_NUM\n",
> ctx.fh);
> > + VHOST_IOCTL_R(struct vhost_vring_state, state,
> > + ops->set_vring_num);
> > break;
> >
> > case VHOST_SET_VRING_BASE:
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL:
> VHOST_SET_VRING_BASE\n", ctx.fh);
> > - VHOST_IOCTL_R(struct vhost_vring_state, state, ops-
> >set_vring_base);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: VHOST_SET_VRING_BASE\n",
> ctx.fh);
> > + VHOST_IOCTL_R(struct vhost_vring_state, state,
> > + ops->set_vring_base);
> > break;
> >
> > case VHOST_GET_VRING_BASE:
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL:
> VHOST_GET_VRING_BASE\n", ctx.fh);
> > - VHOST_IOCTL_RW(uint32_t, index, struct vhost_vring_state,
> state, ops->get_vring_base);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: VHOST_GET_VRING_BASE\n",
> ctx.fh);
> > + VHOST_IOCTL_RW(uint32_t, index,
> > + struct vhost_vring_state, state, ops->get_vring_base);
> > break;
> >
> > case VHOST_SET_VRING_ADDR:
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL:
> VHOST_SET_VRING_ADDR\n", ctx.fh);
> > - VHOST_IOCTL_R(struct vhost_vring_addr, addr, ops-
> >set_vring_addr);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: VHOST_SET_VRING_ADDR\n",
> ctx.fh);
> > + VHOST_IOCTL_R(struct vhost_vring_addr, addr,
> > + ops->set_vring_addr);
> > break;
> >
> > case VHOST_SET_VRING_KICK:
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL:
> VHOST_SET_VRING_KICK\n", ctx.fh);
> > - VHOST_IOCTL_R(struct vhost_vring_file, file, ops-
> >set_vring_kick);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: VHOST_SET_VRING_KICK\n",
> ctx.fh);
> > + VHOST_IOCTL_R(struct vhost_vring_file, file,
> > + ops->set_vring_kick);
> > break;
> >
> > case VHOST_SET_VRING_CALL:
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL:
> VHOST_SET_VRING_CALL\n", ctx.fh);
> > - VHOST_IOCTL_R(struct vhost_vring_file, file, ops-
> >set_vring_call);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: VHOST_SET_VRING_CALL\n",
> ctx.fh);
> > + VHOST_IOCTL_R(struct vhost_vring_file, file,
> > + ops->set_vring_call);
> > break;
> >
> > default:
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") IOCTL: DOESN
> NOT EXIST\n", ctx.fh);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: DOESN NOT EXIST\n", ctx.fh);
> > result = -1;
> > fuse_reply_ioctl(req, result, NULL, 0);
> > }
> >
> > if (result < 0)
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: FAIL\n",
> ctx.fh);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
> > else
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: SUCCESS\n",
> ctx.fh);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
> > }
> >
> > /*
> > @@ -297,8 +322,8 @@ static const struct cuse_lowlevel_ops vhost_net_ops =
> {
> > };
> >
> > /*
> > - * cuse_info is populated and used to register the cuse device.
> vhost_net_device_ops are
> > - * also passed when the device is registered in main.c.
> > + * cuse_info is populated and used to register the cuse device.
> > + * vhost_net_device_ops are also passed when the device is registered in app.
> > */
> > int
> > rte_vhost_driver_register(const char *dev_name)
> > @@ -314,20 +339,23 @@ rte_vhost_driver_register(const char *dev_name)
> > char *fuse_argv[] = {fuse_opt_dummy, fuse_opt_fore,
> fuse_opt_nomulti};
> >
> > if (access(cuse_device_name, R_OK | W_OK) < 0) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "Character device %s can't be
> accessed, maybe not exist\n", cuse_device_name);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "char device %s can't be accessed, maybe not exist\n",
> > + cuse_device_name);
> > return -1;
> > }
> >
> > /*
> > - * The device name is created. This is passed to QEMU so that it can
> register
> > - * the device with our application.
> > + * The device name is created. This is passed to QEMU so that it can
> > + * register the device with our application.
> > */
> > snprintf(device_name, PATH_MAX, "DEVNAME=%s", dev_name);
> > snprintf(char_device_name, PATH_MAX, "/dev/%s", dev_name);
> >
> > /* Check if device already exists. */
> > if (access(char_device_name, F_OK) != -1) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "Character device %s already
> exists\n", char_device_name);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "char device %s already exists\n", char_device_name);
> > return -1;
> > }
> >
> > @@ -341,7 +369,7 @@ rte_vhost_driver_register(const char *dev_name)
> > ops = get_virtio_net_callbacks();
> >
> > session = cuse_lowlevel_setup(3, fuse_argv,
> > - &cuse_info, &vhost_net_ops, 0, NULL);
> > + &cuse_info, &vhost_net_ops, 0, NULL);
> > if (session == NULL)
> > return -1;
> >
> > @@ -349,7 +377,8 @@ rte_vhost_driver_register(const char *dev_name)
> > }
> >
> > /**
> > - * The CUSE session is launched allowing the application to receive open,
> release and ioctl calls.
> > + * The CUSE session is launched allowing the application to receive open,
> > + * release and ioctl calls.
> > */
> > int
> > rte_vhost_driver_session_start(void)
> > diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
> > index 84ec0e8..ccfd82f 100644
> > --- a/lib/librte_vhost/vhost_rxtx.c
> > +++ b/lib/librte_vhost/vhost_rxtx.c
> > @@ -45,7 +45,7 @@
> > /**
> > * This function adds buffers to the virtio devices RX virtqueue. Buffers can
> > * be received from the physical port or from another virtio device. A packet
> > - * count is returned to indicate the number of packets that were succesfully
> > + * count is returned to indicate the number of packets that are succesfully
> > * added to the RX queue. This function works when mergeable is disabled.
> > */
> > static inline uint32_t __attribute__((always_inline))
> > @@ -76,7 +76,7 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
> > count = (count > MAX_PKT_BURST) ? MAX_PKT_BURST : count;
> >
> > /*
> > - * As many data cores may want access to available buffers,
> > + * As many data cores may want access to available buffers,
> > * they need to be reserved.
> > */
> > do {
> > @@ -143,7 +143,8 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
> > }
> >
> > /* Update used ring with desc information */
> > - vq->used->ring[res_cur_idx & (vq->size - 1)].id =
> head[packet_success];
> > + vq->used->ring[res_cur_idx & (vq->size - 1)].id =
> > + head[packet_success];
> > vq->used->ring[res_cur_idx & (vq->size - 1)].len = packet_len;
> >
> > /* Copy mbuf data to buffer */
> > @@ -389,10 +390,7 @@ copy_from_mbuf_to_vring(struct virtio_net *dev,
> uint16_t res_base_idx,
> > }
> >
> > /*
> > - * This function adds buffers to the virtio devices RX virtqueue. Buffers can
> > - * be received from the physical port or from another virtio device. A packet
> > - * count is returned to indicate the number of packets that were succesfully
> > - * added to the RX queue. This function works for mergeable RX.
> > + * This function works for mergeable RX.
> > */
> > static inline uint32_t __attribute__((always_inline))
> > virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id,
> > @@ -729,5 +727,4 @@ rte_vhost_dequeue_burst(struct virtio_net *dev,
> uint16_t queue_id,
> > if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT))
> > eventfd_write((int)vq->kickfd, 1);
> > return entry_success;
> > -
> > }
> > diff --git a/lib/librte_vhost/virtio-net.c b/lib/librte_vhost/virtio-net.c
> > index 8015dd8..c07a11e 100644
> > --- a/lib/librte_vhost/virtio-net.c
> > +++ b/lib/librte_vhost/virtio-net.c
> > @@ -52,27 +52,27 @@
> > #include "vhost-net-cdev.h"
> > #include "eventfd_link/eventfd_link.h"
> >
> > -/**
> > +/*
> > * Device linked list structure for configuration.
> > */
> > struct virtio_net_config_ll {
> > - struct virtio_net dev; /* Virtio device.*/
> > - struct virtio_net_config_ll *next; /* Next entry on linked list.*/
> > + struct virtio_net dev; /* Virtio device.*/
> > + struct virtio_net_config_ll *next; /* Next dev on linked list.*/
> > };
> >
> > const char eventfd_cdev[] = "/dev/eventfd-link";
> >
> > -/* device ops to add/remove device to data core. */
> > +/* device ops to add/remove device to/from data core. */
> > static struct virtio_net_device_ops const *notify_ops;
> > -/* Root address of the linked list in the configuration core. */
> > -static struct virtio_net_config_ll *ll_root;
> > +/* root address of the linked list of managed virtio devices */
> > +static struct virtio_net_config_ll *ll_root;
> >
> > -/* Features supported by this application. RX merge buffers are enabled by
> default. */
> > +/* Features supported by this lib. */
> > #define VHOST_SUPPORTED_FEATURES (1ULL <<
> VIRTIO_NET_F_MRG_RXBUF)
> > static uint64_t VHOST_FEATURES = VHOST_SUPPORTED_FEATURES;
> >
> > /* Line size for reading maps file. */
> > -const uint32_t BUFSIZE = PATH_MAX;
> > +static const uint32_t BUFSIZE = PATH_MAX;
> >
> > /* Size of prot char array in procmap. */
> > #define PROT_SZ 5
> > @@ -82,19 +82,19 @@ const uint32_t BUFSIZE = PATH_MAX;
> >
> > /* Structure containing information gathered from maps file. */
> > struct procmap {
> > - uint64_t va_start; /* Start virtual address in file. */
> > - uint64_t len; /* Size of file. */
> > - uint64_t pgoff; /* Not used. */
> > - uint32_t maj; /* Not used. */
> > - uint32_t min; /* Not used. */
> > - uint32_t ino; /* Not used. */
> > - char prot[PROT_SZ]; /* Not used. */
> > - char fname[PATH_MAX];/* File name. */
> > + uint64_t va_start; /* Start virtual address in file. */
> > + uint64_t len; /* Size of file. */
> > + uint64_t pgoff; /* Not used. */
> > + uint32_t maj; /* Not used. */
> > + uint32_t min; /* Not used. */
> > + uint32_t ino; /* Not used. */
> > + char prot[PROT_SZ]; /* Not used. */
> > + char fname[PATH_MAX]; /* File name. */
> > };
> >
> > /*
> > - * Converts QEMU virtual address to Vhost virtual address. This function is
> used
> > - * to convert the ring addresses to our address space.
> > + * Converts QEMU virtual address to Vhost virtual address. This function is
> > + * used to convert the ring addresses to our address space.
> > */
> > static uint64_t
> > qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
> > @@ -107,8 +107,8 @@ qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
> > for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) {
> > region = &dev->mem->regions[regionidx];
> > if ((qemu_va >= region->userspace_address) &&
> > - (qemu_va <= region->userspace_address +
> > - region->memory_size)) {
> > + (qemu_va <= region->userspace_address +
> > + region->memory_size)) {
> > vhost_va = dev->mem->mapped_address + qemu_va -
> > dev->mem->base_address;
> > break;
> > @@ -118,7 +118,8 @@ qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
> > }
> >
> > /*
> > - * Locate the file containing QEMU's memory space and map it to our address
> space.
> > + * Locate the file containing QEMU's memory space and
> > + * map it to our address space.
> > */
> > static int
> > host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
> > @@ -134,10 +135,10 @@ host_memory_map(struct virtio_net *dev, struct
> virtio_memory *mem,
> > char procdir[PATH_MAX];
> > char resolved_path[PATH_MAX];
> > char *path = NULL;
> > - FILE *fmap;
> > - void *map;
> > - uint8_t found = 0;
> > - char line[BUFSIZE];
> > + FILE *fmap;
> > + void *map;
> > + uint8_t found = 0;
> > + char line[BUFSIZE];
> > char dlm[] = "- : ";
> > char *str, *sp, *in[PROCMAP_SZ];
> > char *end = NULL;
> > @@ -159,7 +160,7 @@ host_memory_map(struct virtio_net *dev, struct
> virtio_memory *mem,
> > while (fgets(line, BUFSIZE, fmap) != 0) {
> > str = line;
> > errno = 0;
> > - /* Split line in to fields. */
> > + /* Split line into fields. */
> > for (i = 0; i < PROCMAP_SZ; i++) {
> > in[i] = strtok_r(str, &dlm[i], &sp);
> > if ((in[i] == NULL) || (errno != 0)) {
> > @@ -171,37 +172,43 @@ host_memory_map(struct virtio_net *dev, struct
> virtio_memory *mem,
> >
> > /* Convert/Copy each field as needed. */
> > procmap.va_start = strtoull(in[0], &end, 16);
> > - if ((in[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0))
> {
> > + if ((in[0] == '\0') || (end == NULL) || (*end != '\0') ||
> > + (errno != 0)) {
> > fclose(fmap);
> > return -1;
> > }
> >
> > procmap.len = strtoull(in[1], &end, 16);
> > - if ((in[1] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0))
> {
> > + if ((in[1] == '\0') || (end == NULL) || (*end != '\0') ||
> > + (errno != 0)) {
> > fclose(fmap);
> > return -1;
> > }
> >
> > procmap.pgoff = strtoull(in[3], &end, 16);
> > - if ((in[3] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0))
> {
> > + if ((in[3] == '\0') || (end == NULL) || (*end != '\0') ||
> > + (errno != 0)) {
> > fclose(fmap);
> > return -1;
> > }
> >
> > procmap.maj = strtoul(in[4], &end, 16);
> > - if ((in[4] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0))
> {
> > + if ((in[4] == '\0') || (end == NULL) || (*end != '\0') ||
> > + (errno != 0)) {
> > fclose(fmap);
> > return -1;
> > }
> >
> > procmap.min = strtoul(in[5], &end, 16);
> > - if ((in[5] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0))
> {
> > + if ((in[5] == '\0') || (end == NULL) || (*end != '\0') ||
> > + (errno != 0)) {
> > fclose(fmap);
> > return -1;
> > }
> >
> > procmap.ino = strtoul(in[6], &end, 16);
> > - if ((in[6] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0))
> {
> > + if ((in[6] == '\0') || (end == NULL) || (*end != '\0') ||
> > + (errno != 0)) {
> > fclose(fmap);
> > return -1;
> > }
> > @@ -218,16 +225,19 @@ host_memory_map(struct virtio_net *dev, struct
> virtio_memory *mem,
> > fclose(fmap);
> >
> > if (!found) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find
> memory file in pid %d maps file\n", dev->device_fh, pid);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") Failed to find memory file in pid %d maps
> file\n",
> > + dev->device_fh, pid);
> > return -1;
> > }
> >
> > /* Find the guest memory file among the process fds. */
> > dp = opendir(procdir);
> > if (dp == NULL) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Cannot open
> pid %d process directory\n", dev->device_fh, pid);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") Cannot open pid %d process directory\n",
> > + dev->device_fh, pid);
> > return -1;
> > -
> > }
> >
> > found = 0;
> > @@ -254,23 +264,29 @@ host_memory_map(struct virtio_net *dev, struct
> virtio_memory *mem,
> > closedir(dp);
> >
> > if (found == 0) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find
> memory file for pid %d\n", dev->device_fh, pid);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") Failed to find memory file for pid %d\n",
> > + dev->device_fh, pid);
> > return -1;
> > }
> > /* Open the shared memory file and map the memory into this process.
> */
> > fd = open(memfile, O_RDWR);
> >
> > if (fd == -1) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to open %s
> for pid %d\n", dev->device_fh, memfile, pid);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") Failed to open %s for pid %d\n",
> > + dev->device_fh, memfile, pid);
> > return -1;
> > }
> >
> > - map = mmap(0, (size_t)procmap.len, PROT_READ|PROT_WRITE ,
> > - MAP_POPULATE|MAP_SHARED, fd, 0);
> > + map = mmap(0, (size_t)procmap.len, PROT_READ|PROT_WRITE,
> > + MAP_POPULATE|MAP_SHARED, fd, 0);
> > close(fd);
> >
> > if (map == MAP_FAILED) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Error mapping the
> file %s for pid %d\n", dev->device_fh, memfile, pid);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") Error mapping the file %s for pid %d\n",
> > + dev->device_fh, memfile, pid);
> > return -1;
> > }
> >
> > @@ -278,8 +294,11 @@ host_memory_map(struct virtio_net *dev, struct
> virtio_memory *mem,
> > mem->mapped_address = (uint64_t)(uintptr_t)map;
> > mem->mapped_size = procmap.len;
> >
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mem File: %s->%s -
> Size: %llu - VA: %p\n", dev->device_fh,
> > - memfile, resolved_path, (long long unsigned)mem-
> >mapped_size, map);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") Mem File: %s->%s - Size: %llu - VA: %p\n",
> > + dev->device_fh,
> > + memfile, resolved_path,
> > + (long long unsigned)mem->mapped_size, map);
> >
> > return 0;
> > }
> > @@ -303,7 +322,8 @@ get_config_ll_entry(struct vhost_device_ctx ctx)
> > }
> >
> > /*
> > - * Searches the configuration core linked list and retrieves the device if it
> exists.
> > + * Searches the configuration core linked list and
> > + * retrieves the device if it exists.
> > */
> > static struct virtio_net *
> > get_device(struct vhost_device_ctx ctx)
> > @@ -312,11 +332,11 @@ get_device(struct vhost_device_ctx ctx)
> >
> > ll_dev = get_config_ll_entry(ctx);
> >
> > - /* If a matching entry is found in the linked list, return the device in that
> entry. */
> > if (ll_dev)
> > return &ll_dev->dev;
> >
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Device not found in linked
> list.\n", ctx.fh);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") Device not found in linked list.\n", ctx.fh);
> > return NULL;
> > }
> >
> > @@ -331,13 +351,18 @@ add_config_ll_entry(struct virtio_net_config_ll
> *new_ll_dev)
> > /* If ll_dev == NULL then this is the first device so go to else */
> > if (ll_dev) {
> > /* If the 1st device_fh != 0 then we insert our device here. */
> > - if (ll_dev->dev.device_fh != 0) {
> > + if (ll_dev->dev.device_fh != 0) {
> > new_ll_dev->dev.device_fh = 0;
> > new_ll_dev->next = ll_dev;
> > ll_root = new_ll_dev;
> > } else {
> > - /* Increment through the ll until we find un unused
> device_fh. Insert the device at that entry*/
> > - while ((ll_dev->next != NULL) && (ll_dev->dev.device_fh
> == (ll_dev->next->dev.device_fh - 1)))
> > + /*
> > + * Increment through the ll until we find un unused
> > + * device_fh. Insert the device at that entry.
> > + */
> > + while ((ll_dev->next != NULL) &&
> > + (ll_dev->dev.device_fh ==
> > + (ll_dev->next->dev.device_fh - 1)))
> > ll_dev = ll_dev->next;
> >
> > new_ll_dev->dev.device_fh = ll_dev->dev.device_fh + 1;
> > @@ -352,7 +377,8 @@ add_config_ll_entry(struct virtio_net_config_ll
> *new_ll_dev)
> > }
> >
> > /*
> > - * Unmap any memory, close any file descriptors and free any memory owned
> by a device.
> > + * Unmap any memory, close any file descriptors and
> > + * free any memory owned by a device.
> > */
> > static void
> > cleanup_device(struct virtio_net *dev)
> > @@ -386,6 +412,7 @@ free_device(struct virtio_net_config_ll *ll_dev)
> > free(ll_dev->dev.virtqueue[VIRTIO_TXQ]);
> > free(ll_dev);
> > }
> > +
> > /*
> > * Remove an entry from the device configuration linked list.
> > */
> > @@ -423,7 +450,10 @@ init_device(struct virtio_net *dev)
> > {
> > uint64_t vq_offset;
> >
> > - /* Virtqueues have already been malloced so we don't want to set them
> to NULL. */
> > + /*
> > + * Virtqueues have already been malloced so
> > + * we don't want to set them to NULL.
> > + */
> > vq_offset = offsetof(struct virtio_net, mem);
> >
> > /* Set everything to 0. */
> > @@ -491,8 +521,8 @@ new_device(struct vhost_device_ctx ctx)
> > }
> >
> > /*
> > - * Function is called from the CUSE release function. This function will cleanup
> > - * the device and remove it from device configuration linked list.
> > + * Function is called from the CUSE release function. This function will
> > + * cleanup the device and remove it from device configuration linked list.
> > */
> > static void
> > destroy_device(struct vhost_device_ctx ctx)
> > @@ -503,15 +533,19 @@ destroy_device(struct vhost_device_ctx ctx)
> > /* Find the linked list entry for the device to be removed. */
> > ll_dev_cur_ctx = get_config_ll_entry(ctx);
> > while (ll_dev_cur != NULL) {
> > - /* If the device is found or a device that doesn't exist is found
> then it is removed. */
> > + /*
> > + * If the device is found or
> > + * a device that doesn't exist is found then it is removed.
> > + */
> > if (ll_dev_cur == ll_dev_cur_ctx) {
> > /*
> > - * If the device is running on a data core then call the
> function to remove it from
> > - * the data core.
> > + * If the device is running on a data core then call
> > + * the function to remove it from the data core.
> > */
> > if ((ll_dev_cur->dev.flags & VIRTIO_DEV_RUNNING))
> > notify_ops->destroy_device(&(ll_dev_cur-
> >dev));
> > - ll_dev_cur = rm_config_ll_entry(ll_dev_cur, ll_dev_last);
> > + ll_dev_cur = rm_config_ll_entry(ll_dev_cur,
> > + ll_dev_last);
> > } else {
> > ll_dev_last = ll_dev_cur;
> > ll_dev_cur = ll_dev_cur->next;
> > @@ -521,7 +555,8 @@ destroy_device(struct vhost_device_ctx ctx)
> >
> > /*
> > * Called from CUSE IOCTL: VHOST_SET_OWNER
> > - * This function just returns success at the moment unless the device hasn't
> been initialised.
> > + * This function just returns success at the moment unless
> > + * the device hasn't been initialised.
> > */
> > static int
> > set_owner(struct vhost_device_ctx ctx)
> > @@ -571,7 +606,7 @@ get_features(struct vhost_device_ctx ctx, uint64_t *pu)
> >
> > /*
> > * Called from CUSE IOCTL: VHOST_SET_FEATURES
> > - * We receive the negotiated set of features supported by us and the virtio
> device.
> > + * We receive the negotiated features supported by us and the virtio device.
> > */
> > static int
> > set_features(struct vhost_device_ctx ctx, uint64_t *pu)
> > @@ -589,13 +624,17 @@ set_features(struct vhost_device_ctx ctx, uint64_t
> *pu)
> >
> > /* Set the vhost_hlen depending on if VIRTIO_NET_F_MRG_RXBUF is set.
> */
> > if (dev->features & (1 << VIRTIO_NET_F_MRG_RXBUF)) {
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mergeable RX
> buffers enabled\n", dev->device_fh);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") Mergeable RX buffers enabled\n",
> > + dev->device_fh);
> > dev->virtqueue[VIRTIO_RXQ]->vhost_hlen =
> > sizeof(struct virtio_net_hdr_mrg_rxbuf);
> > dev->virtqueue[VIRTIO_TXQ]->vhost_hlen =
> > sizeof(struct virtio_net_hdr_mrg_rxbuf);
> > } else {
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mergeable RX
> buffers disabled\n", dev->device_fh);
> > + LOG_DEBUG(VHOST_CONFIG,
> > + "(%"PRIu64") Mergeable RX buffers disabled\n",
> > + dev->device_fh);
> > dev->virtqueue[VIRTIO_RXQ]->vhost_hlen =
> > sizeof(struct virtio_net_hdr);
> > dev->virtqueue[VIRTIO_TXQ]->vhost_hlen =
> > @@ -607,8 +646,8 @@ set_features(struct vhost_device_ctx ctx, uint64_t *pu)
> >
> > /*
> > * Called from CUSE IOCTL: VHOST_SET_MEM_TABLE
> > - * This function creates and populates the memory structure for the device.
> This includes
> > - * storing offsets used to translate buffer addresses.
> > + * This function creates and populates the memory structure for the device.
> > + * This includes storing offsets used to translate buffer addresses.
> > */
> > static int
> > set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
> > @@ -634,7 +673,9 @@ set_mem_table(struct vhost_device_ctx ctx, const
> void *mem_regions_addr,
> > mem = calloc(1, sizeof(struct virtio_memory) +
> > (sizeof(struct virtio_memory_regions) * nregions));
> > if (mem == NULL) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to allocate
> memory for dev->mem.\n", dev->device_fh);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") Failed to allocate memory for dev-
> >mem.\n",
> > + dev->device_fh);
> > return -1;
> > }
> >
> > @@ -656,15 +697,18 @@ set_mem_table(struct vhost_device_ctx ctx, const
> void *mem_regions_addr,
> > mem_regions[regionidx].userspace_addr;
> >
> > LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") REGION: %u -
> GPA: %p - QEMU VA: %p - SIZE (%"PRIu64")\n", dev->device_fh,
> > - regionidx, (void *)(uintptr_t)mem-
> >regions[regionidx].guest_phys_address,
> > - (void *)(uintptr_t)mem-
> >regions[regionidx].userspace_address,
> > - mem->regions[regionidx].memory_size);
> > + regionidx,
> > + (void *)(uintptr_t)mem-
> >regions[regionidx].guest_phys_address,
> > + (void *)(uintptr_t)mem-
> >regions[regionidx].userspace_address,
> > + mem->regions[regionidx].memory_size);
> >
> > /*set the base address mapping*/
> > if (mem->regions[regionidx].guest_phys_address == 0x0) {
> > - mem->base_address = mem-
> >regions[regionidx].userspace_address;
> > + mem->base_address =
> > + mem->regions[regionidx].userspace_address;
> > /* Map VM memory file */
> > - if (host_memory_map(dev, mem, ctx.pid, mem-
> >base_address) != 0) {
> > + if (host_memory_map(dev, mem, ctx.pid,
> > + mem->base_address) != 0) {
> > free(mem);
> > return -1;
> > }
> > @@ -678,27 +722,42 @@ set_mem_table(struct vhost_device_ctx ctx, const
> void *mem_regions_addr,
> > return -1;
> > }
> >
> > - /* Check if all of our regions have valid mappings. Usually one does not
> exist in the QEMU memory file. */
> > + /*
> > + * Check if all of our regions have valid mappings.
> > + * Usually one does not exist in the QEMU memory file.
> > + */
> > valid_regions = mem->nregions;
> > for (regionidx = 0; regionidx < mem->nregions; regionidx++) {
> > - if ((mem->regions[regionidx].userspace_address < mem-
> >base_address) ||
> > - (mem->regions[regionidx].userspace_address > (mem-
> >base_address + mem->mapped_size)))
> > + if ((mem->regions[regionidx].userspace_address <
> > + mem->base_address) ||
> > + (mem->regions[regionidx].userspace_address >
> > + (mem->base_address + mem->mapped_size)))
> > valid_regions--;
> > }
> >
> > - /* If a region does not have a valid mapping we rebuild our memory
> struct to contain only valid entries. */
> > + /*
> > + * If a region does not have a valid mapping,
> > + * we rebuild our memory struct to contain only valid entries.
> > + */
> > if (valid_regions != mem->nregions) {
> > LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Not all memory
> regions exist in the QEMU mem file. Re-populating mem structure\n",
> > dev->device_fh);
> >
> > - /* Re-populate the memory structure with only valid regions.
> Invalid regions are over-written with memmove. */
> > + /*
> > + * Re-populate the memory structure with only valid regions.
> > + * Invalid regions are over-written with memmove.
> > + */
> > valid_regions = 0;
> >
> > for (regionidx = mem->nregions; 0 != regionidx--;) {
> > - if ((mem->regions[regionidx].userspace_address <
> mem->base_address) ||
> > - (mem-
> >regions[regionidx].userspace_address > (mem->base_address + mem-
> >mapped_size))) {
> > - memmove(&mem->regions[regionidx], &mem-
> >regions[regionidx + 1],
> > - sizeof(struct virtio_memory_regions) *
> valid_regions);
> > + if ((mem->regions[regionidx].userspace_address <
> > + mem->base_address) ||
> > + (mem->regions[regionidx].userspace_address >
> > + (mem->base_address + mem->mapped_size))) {
> > + memmove(&mem->regions[regionidx],
> > + &mem->regions[regionidx + 1],
> > + sizeof(struct virtio_memory_regions) *
> > + valid_regions);
> > } else {
> > valid_regions++;
> > }
> > @@ -708,12 +767,16 @@ set_mem_table(struct vhost_device_ctx ctx, const
> void *mem_regions_addr,
> > dev->mem = mem;
> >
> > /*
> > - * Calculate the address offset for each region. This offset is used to
> identify the vhost virtual address
> > + * Calculate the address offset for each region.
> > + * This offset is used to identify the vhost virtual address
> > * corresponding to a QEMU guest physical address.
> > */
> > for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) {
> > - dev->mem->regions[regionidx].address_offset = dev->mem-
> >regions[regionidx].userspace_address - dev->mem->base_address
> > - + dev->mem->mapped_address - dev->mem-
> >regions[regionidx].guest_phys_address;
> > + dev->mem->regions[regionidx].address_offset =
> > + dev->mem->regions[regionidx].userspace_address -
> > + dev->mem->base_address +
> > + dev->mem->mapped_address -
> > + dev->mem-
> >regions[regionidx].guest_phys_address;
> >
> > }
> > return 0;
> > @@ -732,7 +795,7 @@ set_vring_num(struct vhost_device_ctx ctx, struct
> vhost_vring_state *state)
> > if (dev == NULL)
> > return -1;
> >
> > - /* State->index refers to the queue index. The TX queue is 1, RX queue is
> 0. */
> > + /* State->index refers to the queue index. The txq is 1, rxq is 0. */
> > dev->virtqueue[state->index]->size = state->num;
> >
> > return 0;
> > @@ -740,8 +803,8 @@ set_vring_num(struct vhost_device_ctx ctx, struct
> vhost_vring_state *state)
> >
> > /*
> > * Called from CUSE IOCTL: VHOST_SET_VRING_ADDR
> > - * The virtio device sends us the desc, used and avail ring addresses. This
> function
> > - * then converts these to our address space.
> > + * The virtio device sends us the desc, used and avail ring addresses.
> > + * This function then converts these to our address space.
> > */
> > static int
> > set_vring_addr(struct vhost_device_ctx ctx, struct vhost_vring_addr *addr)
> > @@ -753,31 +816,43 @@ set_vring_addr(struct vhost_device_ctx ctx, struct
> vhost_vring_addr *addr)
> > if (dev == NULL)
> > return -1;
> >
> > - /* addr->index refers to the queue index. The TX queue is 1, RX queue is
> 0. */
> > + /* addr->index refers to the queue index. The txq 1, rxq is 0. */
> > vq = dev->virtqueue[addr->index];
> >
> > /* The addresses are converted from QEMU virtual to Vhost virtual. */
> > - vq->desc = (struct vring_desc *)(uintptr_t)qva_to_vva(dev, addr-
> >desc_user_addr);
> > + vq->desc = (struct vring_desc *)(uintptr_t)qva_to_vva(dev,
> > + addr->desc_user_addr);
> > if (vq->desc == 0) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find
> descriptor ring address.\n", dev->device_fh);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") Failed to find desc ring address.\n",
> > + dev->device_fh);
> > return -1;
> > }
> >
> > - vq->avail = (struct vring_avail *)(uintptr_t)qva_to_vva(dev, addr-
> >avail_user_addr);
> > + vq->avail = (struct vring_avail *)(uintptr_t)qva_to_vva(dev,
> > + addr->avail_user_addr);
> > if (vq->avail == 0) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find
> available ring address.\n", dev->device_fh);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") Failed to find avail ring address.\n",
> > + dev->device_fh);
> > return -1;
> > }
> >
> > - vq->used = (struct vring_used *)(uintptr_t)qva_to_vva(dev, addr-
> >used_user_addr);
> > + vq->used = (struct vring_used *)(uintptr_t)qva_to_vva(dev,
> > + addr->used_user_addr);
> > if (vq->used == 0) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find used
> ring address.\n", dev->device_fh);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") Failed to find used ring address.\n",
> > + dev->device_fh);
> > return -1;
> > }
> >
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address
> desc: %p\n", dev->device_fh, vq->desc);
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address
> avail: %p\n", dev->device_fh, vq->avail);
> > - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address
> used: %p\n", dev->device_fh, vq->used);
> > + LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address
> desc: %p\n",
> > + dev->device_fh, vq->desc);
> > + LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address
> avail: %p\n",
> > + dev->device_fh, vq->avail);
> > + LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address
> used: %p\n",
> > + dev->device_fh, vq->used);
> >
> > return 0;
> > }
> > @@ -795,7 +870,7 @@ set_vring_base(struct vhost_device_ctx ctx, struct
> vhost_vring_state *state)
> > if (dev == NULL)
> > return -1;
> >
> > - /* State->index refers to the queue index. The TX queue is 1, RX queue is
> 0. */
> > + /* State->index refers to the queue index. The txq is 1, rxq is 0. */
> > dev->virtqueue[state->index]->last_used_idx = state->num;
> > dev->virtqueue[state->index]->last_used_idx_res = state->num;
> >
> > @@ -817,15 +892,15 @@ get_vring_base(struct vhost_device_ctx ctx,
> uint32_t index,
> > return -1;
> >
> > state->index = index;
> > - /* State->index refers to the queue index. The TX queue is 1, RX queue is
> 0. */
> > + /* State->index refers to the queue index. The txq is 1, rxq is 0. */
> > state->num = dev->virtqueue[state->index]->last_used_idx;
> >
> > return 0;
> > }
> >
> > /*
> > - * This function uses the eventfd_link kernel module to copy an eventfd file
> descriptor
> > - * provided by QEMU in to our process space.
> > + * This function uses the eventfd_link kernel module to copy an eventfd file
> > + * descriptor provided by QEMU in to our process space.
> > */
> > static int
> > eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
> > @@ -835,7 +910,9 @@ eventfd_copy(struct virtio_net *dev, struct
> eventfd_copy *eventfd_copy)
> > /* Open the character device to the kernel module. */
> > eventfd_link = open(eventfd_cdev, O_RDWR);
> > if (eventfd_link < 0) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") eventfd_link
> module is not loaded\n", dev->device_fh);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") eventfd_link module is not loaded\n",
> > + dev->device_fh);
> > return -1;
> > }
> >
> > @@ -844,18 +921,19 @@ eventfd_copy(struct virtio_net *dev, struct
> eventfd_copy *eventfd_copy)
> > close(eventfd_link);
> >
> > if (ret < 0) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") EVENTFD_COPY
> ioctl failed\n", dev->device_fh);
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "(%"PRIu64") EVENTFD_COPY ioctl failed\n",
> > + dev->device_fh);
> > return -1;
> > }
> >
> > -
> > return 0;
> > }
> >
> > /*
> > * Called from CUSE IOCTL: VHOST_SET_VRING_CALL
> > - * The virtio device sends an eventfd to interrupt the guest. This fd gets copied
> in
> > - * to our process space.
> > + * The virtio device sends an eventfd to interrupt the guest. This fd gets
> > + * copied into our process space.
> > */
> > static int
> > set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
> > @@ -868,7 +946,7 @@ set_vring_call(struct vhost_device_ctx ctx, struct
> vhost_vring_file *file)
> > if (dev == NULL)
> > return -1;
> >
> > - /* file->index refers to the queue index. The TX queue is 1, RX queue is 0.
> */
> > + /* file->index refers to the queue index. The txq is 1, rxq is 0. */
> > vq = dev->virtqueue[file->index];
> >
> > if (vq->kickfd)
> > @@ -888,8 +966,8 @@ set_vring_call(struct vhost_device_ctx ctx, struct
> vhost_vring_file *file)
> >
> > /*
> > * Called from CUSE IOCTL: VHOST_SET_VRING_KICK
> > - * The virtio device sends an eventfd that it can use to notify us. This fd gets
> copied in
> > - * to our process space.
> > + * The virtio device sends an eventfd that it can use to notify us.
> > + * This fd gets copied into our process space.
> > */
> > static int
> > set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
> > @@ -902,7 +980,7 @@ set_vring_kick(struct vhost_device_ctx ctx, struct
> vhost_vring_file *file)
> > if (dev == NULL)
> > return -1;
> >
> > - /* file->index refers to the queue index. The TX queue is 1, RX queue is 0.
> */
> > + /* file->index refers to the queue index. The txq is 1, rxq is 0. */
> > vq = dev->virtqueue[file->index];
> >
> > if (vq->callfd)
> > @@ -922,10 +1000,12 @@ set_vring_kick(struct vhost_device_ctx ctx, struct
> vhost_vring_file *file)
> >
> > /*
> > * Called from CUSE IOCTL: VHOST_NET_SET_BACKEND
> > - * To complete device initialisation when the virtio driver is loaded we are
> provided with a
> > - * valid fd for a tap device (not used by us). If this happens then we can add
> the device to a
> > - * data core. When the virtio driver is removed we get fd=-1. At that point we
> remove the device
> > - * from the data core. The device will still exist in the device configuration
> linked list.
> > + * To complete device initialisation when the virtio driver is loaded,
> > + * we are provided with a valid fd for a tap device (not used by us).
> > + * If this happens then we can add the device to a data core.
> > + * When the virtio driver is removed we get fd=-1.
> > + * At that point we remove the device from the data core.
> > + * The device will still exist in the device configuration linked list.
> > */
> > static int
> > set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
> > @@ -936,10 +1016,13 @@ set_backend(struct vhost_device_ctx ctx, struct
> vhost_vring_file *file)
> > if (dev == NULL)
> > return -1;
> >
> > - /* file->index refers to the queue index. The TX queue is 1, RX queue is 0.
> */
> > + /* file->index refers to the queue index. The txq is 1, rxq is 0. */
> > dev->virtqueue[file->index]->backend = file->fd;
> >
> > - /* If the device isn't already running and both backend fds are set we
> add the device. */
> > + /*
> > + * If the device isn't already running and both backend fds are set,
> > + * we add the device.
> > + */
> > if (!(dev->flags & VIRTIO_DEV_RUNNING)) {
> > if (((int)dev->virtqueue[VIRTIO_TXQ]->backend !=
> VIRTIO_DEV_STOPPED) &&
> > ((int)dev->virtqueue[VIRTIO_RXQ]->backend !=
> VIRTIO_DEV_STOPPED))
> > @@ -952,8 +1035,8 @@ set_backend(struct vhost_device_ctx ctx, struct
> vhost_vring_file *file)
> > }
> >
> > /*
> > - * Function pointers are set for the device operations to allow CUSE to call
> functions
> > - * when an IOCTL, device_add or device_release is received.
> > + * Function pointers are set for the device operations to allow CUSE to call
> > + * functions when an IOCTL, device_add or device_release is received.
> > */
> > static const struct vhost_net_device_ops vhost_device_ops = {
> > .new_device = new_device,
> > @@ -991,11 +1074,13 @@ int rte_vhost_enable_guest_notification(struct
> virtio_net *dev,
> > uint16_t queue_id, int enable)
> > {
> > if (enable) {
> > - RTE_LOG(ERR, VHOST_CONFIG, "guest notification isn't
> supported.\n");
> > + RTE_LOG(ERR, VHOST_CONFIG,
> > + "guest notification isn't supported.\n");
> > return -1;
> > }
> >
> > - dev->virtqueue[queue_id]->used->flags = enable ? 0 :
> VRING_USED_F_NO_NOTIFY;
> > + dev->virtqueue[queue_id]->used->flags =
> > + enable ? 0 : VRING_USED_F_NO_NOTIFY;
> > return 0;
> > }
> >
> >
>
>
> --
> Thomas
^ permalink raw reply [flat|nested] 10+ messages in thread
* [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
@ 2014-11-05 17:03 Huawei Xie
2014-11-05 20:41 ` Thomas Monjalon
0 siblings, 1 reply; 10+ messages in thread
From: Huawei Xie @ 2014-11-05 17:03 UTC (permalink / raw)
To: dev
This patch fixes code style issues and refines some comments in vhost library.
Signed-off-by: Huawei Xie <huawei.xie@intel.com>
---
lib/librte_vhost/eventfd_link/eventfd_link.c | 244 ++++++++++-----------
lib/librte_vhost/eventfd_link/eventfd_link.h | 127 ++++++-----
lib/librte_vhost/rte_virtio_net.h | 3 +-
lib/librte_vhost/vhost-net-cdev.c | 187 +++++++++-------
lib/librte_vhost/vhost_rxtx.c | 13 +-
lib/librte_vhost/virtio-net.c | 317 +++++++++++++++++----------
6 files changed, 494 insertions(+), 397 deletions(-)
diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.c b/lib/librte_vhost/eventfd_link/eventfd_link.c
index fc0653a..542ec2c 100644
--- a/lib/librte_vhost/eventfd_link/eventfd_link.c
+++ b/lib/librte_vhost/eventfd_link/eventfd_link.c
@@ -1,26 +1,26 @@
/*-
- * * GPL LICENSE SUMMARY
- * *
- * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * *
- * * This program is free software; you can redistribute it and/or modify
- * * it under the terms of version 2 of the GNU General Public License as
- * * published by the Free Software Foundation.
- * *
- * * This program is distributed in the hope that it will be useful, but
- * * WITHOUT ANY WARRANTY; without even the implied warranty of
- * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * * General Public License for more details.
- * *
- * * You should have received a copy of the GNU General Public License
- * * along with this program; if not, write to the Free Software
- * * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * * The full GNU General Public License is included in this distribution
- * * in the file called LICENSE.GPL.
- * *
- * * Contact Information:
- * * Intel Corporation
- * */
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ * Intel Corporation
+ */
#include <linux/eventfd.h>
#include <linux/miscdevice.h>
@@ -42,15 +42,15 @@
* get_files_struct is copied from fs/file.c
*/
struct files_struct *
-get_files_struct (struct task_struct *task)
+get_files_struct(struct task_struct *task)
{
struct files_struct *files;
- task_lock (task);
+ task_lock(task);
files = task->files;
if (files)
- atomic_inc (&files->count);
- task_unlock (task);
+ atomic_inc(&files->count);
+ task_unlock(task);
return files;
}
@@ -59,17 +59,15 @@ get_files_struct (struct task_struct *task)
* put_files_struct is extracted from fs/file.c
*/
void
-put_files_struct (struct files_struct *files)
+put_files_struct(struct files_struct *files)
{
- if (atomic_dec_and_test (&files->count))
- {
- BUG ();
- }
+ if (atomic_dec_and_test(&files->count))
+ BUG();
}
static long
-eventfd_link_ioctl (struct file *f, unsigned int ioctl, unsigned long arg)
+eventfd_link_ioctl(struct file *f, unsigned int ioctl, unsigned long arg)
{
void __user *argp = (void __user *) arg;
struct task_struct *task_target = NULL;
@@ -78,96 +76,88 @@ eventfd_link_ioctl (struct file *f, unsigned int ioctl, unsigned long arg)
struct fdtable *fdt;
struct eventfd_copy eventfd_copy;
- switch (ioctl)
- {
- case EVENTFD_COPY:
- if (copy_from_user (&eventfd_copy, argp, sizeof (struct eventfd_copy)))
- return -EFAULT;
-
- /*
- * Find the task struct for the target pid
- */
- task_target =
- pid_task (find_vpid (eventfd_copy.target_pid), PIDTYPE_PID);
- if (task_target == NULL)
- {
- printk (KERN_DEBUG "Failed to get mem ctx for target pid\n");
- return -EFAULT;
- }
-
- files = get_files_struct (current);
- if (files == NULL)
- {
- printk (KERN_DEBUG "Failed to get files struct\n");
- return -EFAULT;
- }
-
- rcu_read_lock ();
- file = fcheck_files (files, eventfd_copy.source_fd);
- if (file)
- {
- if (file->f_mode & FMODE_PATH
- || !atomic_long_inc_not_zero (&file->f_count))
- file = NULL;
- }
- rcu_read_unlock ();
- put_files_struct (files);
-
- if (file == NULL)
- {
- printk (KERN_DEBUG "Failed to get file from source pid\n");
- return 0;
- }
-
- /*
- * Release the existing eventfd in the source process
- */
- spin_lock (&files->file_lock);
- filp_close (file, files);
- fdt = files_fdtable (files);
- fdt->fd[eventfd_copy.source_fd] = NULL;
- spin_unlock (&files->file_lock);
-
- /*
- * Find the file struct associated with the target fd.
- */
-
- files = get_files_struct (task_target);
- if (files == NULL)
- {
- printk (KERN_DEBUG "Failed to get files struct\n");
- return -EFAULT;
- }
-
- rcu_read_lock ();
- file = fcheck_files (files, eventfd_copy.target_fd);
- if (file)
- {
- if (file->f_mode & FMODE_PATH
- || !atomic_long_inc_not_zero (&file->f_count))
+ switch (ioctl) {
+ case EVENTFD_COPY:
+ if (copy_from_user(&eventfd_copy, argp,
+ sizeof(struct eventfd_copy)))
+ return -EFAULT;
+
+ /*
+ * Find the task struct for the target pid
+ */
+ task_target =
+ pid_task(find_vpid(eventfd_copy.target_pid), PIDTYPE_PID);
+ if (task_target == NULL) {
+ printk(KERN_DEBUG "Failed to get mem ctx for target pid\n");
+ return -EFAULT;
+ }
+
+ files = get_files_struct(current);
+ if (files == NULL) {
+ printk(KERN_DEBUG "Failed to get files struct\n");
+ return -EFAULT;
+ }
+
+ rcu_read_lock();
+ file = fcheck_files(files, eventfd_copy.source_fd);
+ if (file) {
+ if (file->f_mode & FMODE_PATH ||
+ !atomic_long_inc_not_zero(&file->f_count))
+ file = NULL;
+ }
+ rcu_read_unlock();
+ put_files_struct(files);
+
+ if (file == NULL) {
+ printk(KERN_DEBUG "Failed to get file from source pid\n");
+ return 0;
+ }
+
+ /*
+ * Release the existing eventfd in the source process
+ */
+ spin_lock(&files->file_lock);
+ filp_close(file, files);
+ fdt = files_fdtable(files);
+ fdt->fd[eventfd_copy.source_fd] = NULL;
+ spin_unlock(&files->file_lock);
+
+ /*
+ * Find the file struct associated with the target fd.
+ */
+
+ files = get_files_struct(task_target);
+ if (files == NULL) {
+ printk(KERN_DEBUG "Failed to get files struct\n");
+ return -EFAULT;
+ }
+
+ rcu_read_lock();
+ file = fcheck_files(files, eventfd_copy.target_fd);
+ if (file) {
+ if (file->f_mode & FMODE_PATH ||
+ !atomic_long_inc_not_zero(&file->f_count))
file = NULL;
- }
- rcu_read_unlock ();
- put_files_struct (files);
-
- if (file == NULL)
- {
- printk (KERN_DEBUG "Failed to get file from target pid\n");
- return 0;
- }
+ }
+ rcu_read_unlock();
+ put_files_struct(files);
+ if (file == NULL) {
+ printk(KERN_DEBUG "Failed to get file from target pid\n");
+ return 0;
+ }
- /*
- * Install the file struct from the target process into the
- * file desciptor of the source process,
- */
+ /*
+ * Install the file struct from the target process into the
+ * file desciptor of the source process,
+ */
- fd_install (eventfd_copy.source_fd, file);
+ fd_install(eventfd_copy.source_fd, file);
- return 0;
+ return 0;
- default:
- return -ENOIOCTLCMD;
+ default:
+ return -ENOIOCTLCMD;
}
}
@@ -183,23 +173,23 @@ static struct miscdevice eventfd_link_misc = {
};
static int __init
-eventfd_link_init (void)
+eventfd_link_init(void)
{
- return misc_register (&eventfd_link_misc);
+ return misc_register(&eventfd_link_misc);
}
-module_init (eventfd_link_init);
+module_init(eventfd_link_init);
static void __exit
-eventfd_link_exit (void)
+eventfd_link_exit(void)
{
- misc_deregister (&eventfd_link_misc);
+ misc_deregister(&eventfd_link_misc);
}
-module_exit (eventfd_link_exit);
+module_exit(eventfd_link_exit);
-MODULE_VERSION ("0.0.1");
-MODULE_LICENSE ("GPL v2");
-MODULE_AUTHOR ("Anthony Fee");
-MODULE_DESCRIPTION ("Link eventfd");
-MODULE_ALIAS ("devname:eventfd-link");
+MODULE_VERSION("0.0.1");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Anthony Fee");
+MODULE_DESCRIPTION("Link eventfd");
+MODULE_ALIAS("devname:eventfd-link");
diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.h b/lib/librte_vhost/eventfd_link/eventfd_link.h
index a32a8dd..ea619ec 100644
--- a/lib/librte_vhost/eventfd_link/eventfd_link.h
+++ b/lib/librte_vhost/eventfd_link/eventfd_link.h
@@ -1,79 +1,76 @@
/*-
- * * This file is provided under a dual BSD/GPLv2 license. When using or
- * * redistributing this file, you may do so under either license.
- * *
- * * GPL LICENSE SUMMARY
- * *
- * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * *
- * * This program is free software; you can redistribute it and/or modify
- * * it under the terms of version 2 of the GNU General Public License as
- * * published by the Free Software Foundation.
- * *
- * * This program is distributed in the hope that it will be useful, but
- * * WITHOUT ANY WARRANTY; without even the implied warranty of
- * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * * General Public License for more details.
- * *
- * * You should have received a copy of the GNU General Public License
- * * along with this program; if not, write to the Free Software
- * * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * * The full GNU General Public License is included in this distribution
- * * in the file called LICENSE.GPL.
- * *
- * * Contact Information:
- * * Intel Corporation
- * *
- * * BSD LICENSE
- * *
- * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * * All rights reserved.
- * *
- * * Redistribution and use in source and binary forms, with or without
- * * modification, are permitted provided that the following conditions
- * * are met:
- * *
- * * * Redistributions of source code must retain the above copyright
- * * notice, this list of conditions and the following disclaimer.
- * * * Redistributions in binary form must reproduce the above copyright
- * * notice, this list of conditions and the following disclaimer in
- * * the documentation and/or other materials provided with the
- * * distribution.
- * * * Neither the name of Intel Corporation nor the names of its
- * * contributors may be used to endorse or promote products derived
- * * from this software without specific prior written permission.
- * *
- * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * *
- * */
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ * Intel Corporation
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
#ifndef _EVENTFD_LINK_H_
#define _EVENTFD_LINK_H_
/*
- * ioctl to copy an fd entry in calling process to an fd in a target process
+ * ioctl to copy an fd entry in calling process to an fd in a target process
*/
#define EVENTFD_COPY 1
/*
- * arguements for the EVENTFD_COPY ioctl
+ * arguements for the EVENTFD_COPY ioctl
*/
struct eventfd_copy {
- // fd in the target pid
- unsigned target_fd;
- // fd in the calling pid
- unsigned source_fd;
- // pid of the target pid
- pid_t target_pid;
+ unsigned target_fd; /* fd in the target pid */
+ unsigned source_fd; /* fd in the calling pid */
+ pid_t target_pid; /* pid of the target pid */
};
#endif /* _EVENTFD_LINK_H_ */
diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h
index b6548a1..00b1328 100644
--- a/lib/librte_vhost/rte_virtio_net.h
+++ b/lib/librte_vhost/rte_virtio_net.h
@@ -90,8 +90,7 @@ struct vhost_virtqueue {
/**
* Device structure contains all configuration information relating to the device.
*/
-struct virtio_net
-{
+struct virtio_net {
struct vhost_virtqueue *virtqueue[VIRTIO_QNUM]; /**< Contains all virtqueue information. */
struct virtio_memory *mem; /**< QEMU memory and memory region information. */
uint64_t features; /**< Negotiated feature set. */
diff --git a/lib/librte_vhost/vhost-net-cdev.c b/lib/librte_vhost/vhost-net-cdev.c
index 91ff0d8..57c76cb 100644
--- a/lib/librte_vhost/vhost-net-cdev.c
+++ b/lib/librte_vhost/vhost-net-cdev.c
@@ -46,21 +46,21 @@
#include "vhost-net-cdev.h"
-#define FUSE_OPT_DUMMY "\0\0"
-#define FUSE_OPT_FORE "-f\0\0"
-#define FUSE_OPT_NOMULTI "-s\0\0"
+#define FUSE_OPT_DUMMY "\0\0"
+#define FUSE_OPT_FORE "-f\0\0"
+#define FUSE_OPT_NOMULTI "-s\0\0"
-static const uint32_t default_major = 231;
-static const uint32_t default_minor = 1;
-static const char cuse_device_name[] = "/dev/cuse";
-static const char default_cdev[] = "vhost-net";
+static const uint32_t default_major = 231;
+static const uint32_t default_minor = 1;
+static const char cuse_device_name[] = "/dev/cuse";
+static const char default_cdev[] = "vhost-net";
-static struct fuse_session *session;
-static struct vhost_net_device_ops const *ops;
+static struct fuse_session *session;
+static struct vhost_net_device_ops const *ops;
/*
- * Returns vhost_device_ctx from given fuse_req_t. The index is populated later when
- * the device is added to the device linked list.
+ * Returns vhost_device_ctx from given fuse_req_t. The index is populated later
+ * when the device is added to the device linked list.
*/
static struct vhost_device_ctx
fuse_req_to_vhost_ctx(fuse_req_t req, struct fuse_file_info *fi)
@@ -75,7 +75,8 @@ fuse_req_to_vhost_ctx(fuse_req_t req, struct fuse_file_info *fi)
}
/*
- * When the device is created in QEMU it gets initialised here and added to the device linked list.
+ * When the device is created in QEMU it gets initialised here and
+ * added to the device linked list.
*/
static void
vhost_net_open(fuse_req_t req, struct fuse_file_info *fi)
@@ -91,7 +92,8 @@ vhost_net_open(fuse_req_t req, struct fuse_file_info *fi)
fi->fh = err;
- RTE_LOG(INFO, VHOST_CONFIG, "(%"PRIu64") Device configuration started\n", fi->fh);
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "(%"PRIu64") Device configuration started\n", fi->fh);
fuse_reply_open(req, fi);
}
@@ -113,8 +115,8 @@ vhost_net_release(fuse_req_t req, struct fuse_file_info *fi)
* Boilerplate code for CUSE IOCTL
* Implicit arguments: ctx, req, result.
*/
-#define VHOST_IOCTL(func) do { \
- result = (func)(ctx); \
+#define VHOST_IOCTL(func) do { \
+ result = (func)(ctx); \
fuse_reply_ioctl(req, result, NULL, 0); \
} while (0)
@@ -122,57 +124,58 @@ vhost_net_release(fuse_req_t req, struct fuse_file_info *fi)
* Boilerplate IOCTL RETRY
* Implicit arguments: req.
*/
-#define VHOST_IOCTL_RETRY(size_r, size_w) do { \
- struct iovec iov_r = { arg, (size_r) }; \
- struct iovec iov_w = { arg, (size_w) }; \
- fuse_reply_ioctl_retry(req, &iov_r, (size_r)?1:0, &iov_w, (size_w)?1:0); \
+#define VHOST_IOCTL_RETRY(size_r, size_w) do { \
+ struct iovec iov_r = { arg, (size_r) }; \
+ struct iovec iov_w = { arg, (size_w) }; \
+ fuse_reply_ioctl_retry(req, &iov_r, \
+ (size_r) ? 1 : 0, &iov_w, (size_w) ? 1 : 0);\
} while (0)
/*
* Boilerplate code for CUSE Read IOCTL
* Implicit arguments: ctx, req, result, in_bufsz, in_buf.
*/
-#define VHOST_IOCTL_R(type, var, func) do { \
- if (!in_bufsz) { \
- VHOST_IOCTL_RETRY(sizeof(type), 0); \
- } else { \
- (var) = *(const type*) in_buf; \
- result = func(ctx, &(var)); \
- fuse_reply_ioctl(req, result, NULL, 0); \
- } \
+#define VHOST_IOCTL_R(type, var, func) do { \
+ if (!in_bufsz) { \
+ VHOST_IOCTL_RETRY(sizeof(type), 0);\
+ } else { \
+ (var) = *(const type*)in_buf; \
+ result = func(ctx, &(var)); \
+ fuse_reply_ioctl(req, result, NULL, 0);\
+ } \
} while (0)
/*
- * Boilerplate code for CUSE Write IOCTL
+ * Boilerplate code for CUSE Write IOCTL
* Implicit arguments: ctx, req, result, out_bufsz.
*/
-#define VHOST_IOCTL_W(type, var, func) do { \
- if (!out_bufsz) { \
- VHOST_IOCTL_RETRY(0, sizeof(type)); \
- } else { \
- result = (func)(ctx, &(var)); \
- fuse_reply_ioctl(req, result, &(var), sizeof(type)); \
- } \
+#define VHOST_IOCTL_W(type, var, func) do { \
+ if (!out_bufsz) { \
+ VHOST_IOCTL_RETRY(0, sizeof(type));\
+ } else { \
+ result = (func)(ctx, &(var));\
+ fuse_reply_ioctl(req, result, &(var), sizeof(type));\
+ } \
} while (0)
/*
* Boilerplate code for CUSE Read/Write IOCTL
* Implicit arguments: ctx, req, result, in_bufsz, in_buf.
*/
-#define VHOST_IOCTL_RW(type1, var1, type2, var2, func) do { \
- if (!in_bufsz) { \
- VHOST_IOCTL_RETRY(sizeof(type1), sizeof(type2)); \
- } else { \
- (var1) = *(const type1*) (in_buf); \
- result = (func)(ctx, (var1), &(var2)); \
- fuse_reply_ioctl(req, result, &(var2), sizeof(type2)); \
- } \
+#define VHOST_IOCTL_RW(type1, var1, type2, var2, func) do { \
+ if (!in_bufsz) { \
+ VHOST_IOCTL_RETRY(sizeof(type1), sizeof(type2));\
+ } else { \
+ (var1) = *(const type1*) (in_buf); \
+ result = (func)(ctx, (var1), &(var2)); \
+ fuse_reply_ioctl(req, result, &(var2), sizeof(type2));\
+ } \
} while (0)
/*
- * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on
- * the type of IOCTL a buffer is requested to read or to write. This
- * request is handled by FUSE and the buffer is then given to CUSE.
+ * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on the type
+ * of IOCTL a buffer is requested to read or to write. This request is handled
+ * by FUSE and the buffer is then given to CUSE.
*/
static void
vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
@@ -189,33 +192,39 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
switch (cmd) {
case VHOST_NET_SET_BACKEND:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n", ctx.fh);
VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_backend);
break;
case VHOST_GET_FEATURES:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_GET_FEATURES\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_GET_FEATURES\n", ctx.fh);
VHOST_IOCTL_W(uint64_t, features, ops->get_features);
break;
case VHOST_SET_FEATURES:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_FEATURES\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_FEATURES\n", ctx.fh);
VHOST_IOCTL_R(uint64_t, features, ops->set_features);
break;
case VHOST_RESET_OWNER:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_RESET_OWNER\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_RESET_OWNER\n", ctx.fh);
VHOST_IOCTL(ops->reset_owner);
break;
case VHOST_SET_OWNER:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_OWNER\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_OWNER\n", ctx.fh);
VHOST_IOCTL(ops->set_owner);
break;
case VHOST_SET_MEM_TABLE:
/*TODO fix race condition.*/
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n", ctx.fh);
static struct vhost_memory mem_temp;
switch (in_bufsz) {
@@ -227,7 +236,9 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
mem_temp = *(const struct vhost_memory *) in_buf;
if (mem_temp.nregions > 0) {
- VHOST_IOCTL_RETRY(sizeof(struct vhost_memory) + (sizeof(struct vhost_memory_region) * mem_temp.nregions), 0);
+ VHOST_IOCTL_RETRY(sizeof(struct vhost_memory) +
+ (sizeof(struct vhost_memory_region) *
+ mem_temp.nregions), 0);
} else {
result = -1;
fuse_reply_ioctl(req, result, NULL, 0);
@@ -235,56 +246,70 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
break;
default:
- result = ops->set_mem_table(ctx, in_buf, mem_temp.nregions);
+ result = ops->set_mem_table(ctx,
+ in_buf, mem_temp.nregions);
if (result)
fuse_reply_err(req, EINVAL);
else
fuse_reply_ioctl(req, result, NULL, 0);
-
}
-
break;
case VHOST_SET_VRING_NUM:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_NUM\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_state, state, ops->set_vring_num);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_NUM\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_state, state,
+ ops->set_vring_num);
break;
case VHOST_SET_VRING_BASE:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_BASE\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_state, state, ops->set_vring_base);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_BASE\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_state, state,
+ ops->set_vring_base);
break;
case VHOST_GET_VRING_BASE:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_GET_VRING_BASE\n", ctx.fh);
- VHOST_IOCTL_RW(uint32_t, index, struct vhost_vring_state, state, ops->get_vring_base);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_GET_VRING_BASE\n", ctx.fh);
+ VHOST_IOCTL_RW(uint32_t, index,
+ struct vhost_vring_state, state, ops->get_vring_base);
break;
case VHOST_SET_VRING_ADDR:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_ADDR\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_addr, addr, ops->set_vring_addr);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_ADDR\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_addr, addr,
+ ops->set_vring_addr);
break;
case VHOST_SET_VRING_KICK:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_KICK\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_vring_kick);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_KICK\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_file, file,
+ ops->set_vring_kick);
break;
case VHOST_SET_VRING_CALL:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_CALL\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_vring_call);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_CALL\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_file, file,
+ ops->set_vring_call);
break;
default:
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") IOCTL: DOESN NOT EXIST\n", ctx.fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: DOESN NOT EXIST\n", ctx.fh);
result = -1;
fuse_reply_ioctl(req, result, NULL, 0);
}
if (result < 0)
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
else
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
}
/*
@@ -297,8 +322,8 @@ static const struct cuse_lowlevel_ops vhost_net_ops = {
};
/*
- * cuse_info is populated and used to register the cuse device. vhost_net_device_ops are
- * also passed when the device is registered in main.c.
+ * cuse_info is populated and used to register the cuse device.
+ * vhost_net_device_ops are also passed when the device is registered in app.
*/
int
rte_vhost_driver_register(const char *dev_name)
@@ -314,20 +339,23 @@ rte_vhost_driver_register(const char *dev_name)
char *fuse_argv[] = {fuse_opt_dummy, fuse_opt_fore, fuse_opt_nomulti};
if (access(cuse_device_name, R_OK | W_OK) < 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "Character device %s can't be accessed, maybe not exist\n", cuse_device_name);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "char device %s can't be accessed, maybe not exist\n",
+ cuse_device_name);
return -1;
}
/*
- * The device name is created. This is passed to QEMU so that it can register
- * the device with our application.
+ * The device name is created. This is passed to QEMU so that it can
+ * register the device with our application.
*/
snprintf(device_name, PATH_MAX, "DEVNAME=%s", dev_name);
snprintf(char_device_name, PATH_MAX, "/dev/%s", dev_name);
/* Check if device already exists. */
if (access(char_device_name, F_OK) != -1) {
- RTE_LOG(ERR, VHOST_CONFIG, "Character device %s already exists\n", char_device_name);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "char device %s already exists\n", char_device_name);
return -1;
}
@@ -341,7 +369,7 @@ rte_vhost_driver_register(const char *dev_name)
ops = get_virtio_net_callbacks();
session = cuse_lowlevel_setup(3, fuse_argv,
- &cuse_info, &vhost_net_ops, 0, NULL);
+ &cuse_info, &vhost_net_ops, 0, NULL);
if (session == NULL)
return -1;
@@ -349,7 +377,8 @@ rte_vhost_driver_register(const char *dev_name)
}
/**
- * The CUSE session is launched allowing the application to receive open, release and ioctl calls.
+ * The CUSE session is launched allowing the application to receive open,
+ * release and ioctl calls.
*/
int
rte_vhost_driver_session_start(void)
diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
index 84ec0e8..ccfd82f 100644
--- a/lib/librte_vhost/vhost_rxtx.c
+++ b/lib/librte_vhost/vhost_rxtx.c
@@ -45,7 +45,7 @@
/**
* This function adds buffers to the virtio devices RX virtqueue. Buffers can
* be received from the physical port or from another virtio device. A packet
- * count is returned to indicate the number of packets that were succesfully
+ * count is returned to indicate the number of packets that are succesfully
* added to the RX queue. This function works when mergeable is disabled.
*/
static inline uint32_t __attribute__((always_inline))
@@ -76,7 +76,7 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
count = (count > MAX_PKT_BURST) ? MAX_PKT_BURST : count;
/*
- * As many data cores may want access to available buffers,
+ * As many data cores may want access to available buffers,
* they need to be reserved.
*/
do {
@@ -143,7 +143,8 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
}
/* Update used ring with desc information */
- vq->used->ring[res_cur_idx & (vq->size - 1)].id = head[packet_success];
+ vq->used->ring[res_cur_idx & (vq->size - 1)].id =
+ head[packet_success];
vq->used->ring[res_cur_idx & (vq->size - 1)].len = packet_len;
/* Copy mbuf data to buffer */
@@ -389,10 +390,7 @@ copy_from_mbuf_to_vring(struct virtio_net *dev, uint16_t res_base_idx,
}
/*
- * This function adds buffers to the virtio devices RX virtqueue. Buffers can
- * be received from the physical port or from another virtio device. A packet
- * count is returned to indicate the number of packets that were succesfully
- * added to the RX queue. This function works for mergeable RX.
+ * This function works for mergeable RX.
*/
static inline uint32_t __attribute__((always_inline))
virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id,
@@ -729,5 +727,4 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT))
eventfd_write((int)vq->kickfd, 1);
return entry_success;
-
}
diff --git a/lib/librte_vhost/virtio-net.c b/lib/librte_vhost/virtio-net.c
index 8015dd8..c07a11e 100644
--- a/lib/librte_vhost/virtio-net.c
+++ b/lib/librte_vhost/virtio-net.c
@@ -52,27 +52,27 @@
#include "vhost-net-cdev.h"
#include "eventfd_link/eventfd_link.h"
-/**
+/*
* Device linked list structure for configuration.
*/
struct virtio_net_config_ll {
- struct virtio_net dev; /* Virtio device.*/
- struct virtio_net_config_ll *next; /* Next entry on linked list.*/
+ struct virtio_net dev; /* Virtio device.*/
+ struct virtio_net_config_ll *next; /* Next dev on linked list.*/
};
const char eventfd_cdev[] = "/dev/eventfd-link";
-/* device ops to add/remove device to data core. */
+/* device ops to add/remove device to/from data core. */
static struct virtio_net_device_ops const *notify_ops;
-/* Root address of the linked list in the configuration core. */
-static struct virtio_net_config_ll *ll_root;
+/* root address of the linked list of managed virtio devices */
+static struct virtio_net_config_ll *ll_root;
-/* Features supported by this application. RX merge buffers are enabled by default. */
+/* Features supported by this lib. */
#define VHOST_SUPPORTED_FEATURES (1ULL << VIRTIO_NET_F_MRG_RXBUF)
static uint64_t VHOST_FEATURES = VHOST_SUPPORTED_FEATURES;
/* Line size for reading maps file. */
-const uint32_t BUFSIZE = PATH_MAX;
+static const uint32_t BUFSIZE = PATH_MAX;
/* Size of prot char array in procmap. */
#define PROT_SZ 5
@@ -82,19 +82,19 @@ const uint32_t BUFSIZE = PATH_MAX;
/* Structure containing information gathered from maps file. */
struct procmap {
- uint64_t va_start; /* Start virtual address in file. */
- uint64_t len; /* Size of file. */
- uint64_t pgoff; /* Not used. */
- uint32_t maj; /* Not used. */
- uint32_t min; /* Not used. */
- uint32_t ino; /* Not used. */
- char prot[PROT_SZ]; /* Not used. */
- char fname[PATH_MAX];/* File name. */
+ uint64_t va_start; /* Start virtual address in file. */
+ uint64_t len; /* Size of file. */
+ uint64_t pgoff; /* Not used. */
+ uint32_t maj; /* Not used. */
+ uint32_t min; /* Not used. */
+ uint32_t ino; /* Not used. */
+ char prot[PROT_SZ]; /* Not used. */
+ char fname[PATH_MAX]; /* File name. */
};
/*
- * Converts QEMU virtual address to Vhost virtual address. This function is used
- * to convert the ring addresses to our address space.
+ * Converts QEMU virtual address to Vhost virtual address. This function is
+ * used to convert the ring addresses to our address space.
*/
static uint64_t
qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
@@ -107,8 +107,8 @@ qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) {
region = &dev->mem->regions[regionidx];
if ((qemu_va >= region->userspace_address) &&
- (qemu_va <= region->userspace_address +
- region->memory_size)) {
+ (qemu_va <= region->userspace_address +
+ region->memory_size)) {
vhost_va = dev->mem->mapped_address + qemu_va -
dev->mem->base_address;
break;
@@ -118,7 +118,8 @@ qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
}
/*
- * Locate the file containing QEMU's memory space and map it to our address space.
+ * Locate the file containing QEMU's memory space and
+ * map it to our address space.
*/
static int
host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
@@ -134,10 +135,10 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
char procdir[PATH_MAX];
char resolved_path[PATH_MAX];
char *path = NULL;
- FILE *fmap;
- void *map;
- uint8_t found = 0;
- char line[BUFSIZE];
+ FILE *fmap;
+ void *map;
+ uint8_t found = 0;
+ char line[BUFSIZE];
char dlm[] = "- : ";
char *str, *sp, *in[PROCMAP_SZ];
char *end = NULL;
@@ -159,7 +160,7 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
while (fgets(line, BUFSIZE, fmap) != 0) {
str = line;
errno = 0;
- /* Split line in to fields. */
+ /* Split line into fields. */
for (i = 0; i < PROCMAP_SZ; i++) {
in[i] = strtok_r(str, &dlm[i], &sp);
if ((in[i] == NULL) || (errno != 0)) {
@@ -171,37 +172,43 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
/* Convert/Copy each field as needed. */
procmap.va_start = strtoull(in[0], &end, 16);
- if ((in[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[0] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.len = strtoull(in[1], &end, 16);
- if ((in[1] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[1] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.pgoff = strtoull(in[3], &end, 16);
- if ((in[3] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[3] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.maj = strtoul(in[4], &end, 16);
- if ((in[4] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[4] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.min = strtoul(in[5], &end, 16);
- if ((in[5] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[5] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.ino = strtoul(in[6], &end, 16);
- if ((in[6] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[6] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
@@ -218,16 +225,19 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
fclose(fmap);
if (!found) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find memory file in pid %d maps file\n", dev->device_fh, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find memory file in pid %d maps file\n",
+ dev->device_fh, pid);
return -1;
}
/* Find the guest memory file among the process fds. */
dp = opendir(procdir);
if (dp == NULL) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Cannot open pid %d process directory\n", dev->device_fh, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Cannot open pid %d process directory\n",
+ dev->device_fh, pid);
return -1;
-
}
found = 0;
@@ -254,23 +264,29 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
closedir(dp);
if (found == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find memory file for pid %d\n", dev->device_fh, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find memory file for pid %d\n",
+ dev->device_fh, pid);
return -1;
}
/* Open the shared memory file and map the memory into this process. */
fd = open(memfile, O_RDWR);
if (fd == -1) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to open %s for pid %d\n", dev->device_fh, memfile, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to open %s for pid %d\n",
+ dev->device_fh, memfile, pid);
return -1;
}
- map = mmap(0, (size_t)procmap.len, PROT_READ|PROT_WRITE ,
- MAP_POPULATE|MAP_SHARED, fd, 0);
+ map = mmap(0, (size_t)procmap.len, PROT_READ|PROT_WRITE,
+ MAP_POPULATE|MAP_SHARED, fd, 0);
close(fd);
if (map == MAP_FAILED) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Error mapping the file %s for pid %d\n", dev->device_fh, memfile, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Error mapping the file %s for pid %d\n",
+ dev->device_fh, memfile, pid);
return -1;
}
@@ -278,8 +294,11 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
mem->mapped_address = (uint64_t)(uintptr_t)map;
mem->mapped_size = procmap.len;
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mem File: %s->%s - Size: %llu - VA: %p\n", dev->device_fh,
- memfile, resolved_path, (long long unsigned)mem->mapped_size, map);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") Mem File: %s->%s - Size: %llu - VA: %p\n",
+ dev->device_fh,
+ memfile, resolved_path,
+ (long long unsigned)mem->mapped_size, map);
return 0;
}
@@ -303,7 +322,8 @@ get_config_ll_entry(struct vhost_device_ctx ctx)
}
/*
- * Searches the configuration core linked list and retrieves the device if it exists.
+ * Searches the configuration core linked list and
+ * retrieves the device if it exists.
*/
static struct virtio_net *
get_device(struct vhost_device_ctx ctx)
@@ -312,11 +332,11 @@ get_device(struct vhost_device_ctx ctx)
ll_dev = get_config_ll_entry(ctx);
- /* If a matching entry is found in the linked list, return the device in that entry. */
if (ll_dev)
return &ll_dev->dev;
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Device not found in linked list.\n", ctx.fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Device not found in linked list.\n", ctx.fh);
return NULL;
}
@@ -331,13 +351,18 @@ add_config_ll_entry(struct virtio_net_config_ll *new_ll_dev)
/* If ll_dev == NULL then this is the first device so go to else */
if (ll_dev) {
/* If the 1st device_fh != 0 then we insert our device here. */
- if (ll_dev->dev.device_fh != 0) {
+ if (ll_dev->dev.device_fh != 0) {
new_ll_dev->dev.device_fh = 0;
new_ll_dev->next = ll_dev;
ll_root = new_ll_dev;
} else {
- /* Increment through the ll until we find un unused device_fh. Insert the device at that entry*/
- while ((ll_dev->next != NULL) && (ll_dev->dev.device_fh == (ll_dev->next->dev.device_fh - 1)))
+ /*
+ * Increment through the ll until we find un unused
+ * device_fh. Insert the device at that entry.
+ */
+ while ((ll_dev->next != NULL) &&
+ (ll_dev->dev.device_fh ==
+ (ll_dev->next->dev.device_fh - 1)))
ll_dev = ll_dev->next;
new_ll_dev->dev.device_fh = ll_dev->dev.device_fh + 1;
@@ -352,7 +377,8 @@ add_config_ll_entry(struct virtio_net_config_ll *new_ll_dev)
}
/*
- * Unmap any memory, close any file descriptors and free any memory owned by a device.
+ * Unmap any memory, close any file descriptors and
+ * free any memory owned by a device.
*/
static void
cleanup_device(struct virtio_net *dev)
@@ -386,6 +412,7 @@ free_device(struct virtio_net_config_ll *ll_dev)
free(ll_dev->dev.virtqueue[VIRTIO_TXQ]);
free(ll_dev);
}
+
/*
* Remove an entry from the device configuration linked list.
*/
@@ -423,7 +450,10 @@ init_device(struct virtio_net *dev)
{
uint64_t vq_offset;
- /* Virtqueues have already been malloced so we don't want to set them to NULL. */
+ /*
+ * Virtqueues have already been malloced so
+ * we don't want to set them to NULL.
+ */
vq_offset = offsetof(struct virtio_net, mem);
/* Set everything to 0. */
@@ -491,8 +521,8 @@ new_device(struct vhost_device_ctx ctx)
}
/*
- * Function is called from the CUSE release function. This function will cleanup
- * the device and remove it from device configuration linked list.
+ * Function is called from the CUSE release function. This function will
+ * cleanup the device and remove it from device configuration linked list.
*/
static void
destroy_device(struct vhost_device_ctx ctx)
@@ -503,15 +533,19 @@ destroy_device(struct vhost_device_ctx ctx)
/* Find the linked list entry for the device to be removed. */
ll_dev_cur_ctx = get_config_ll_entry(ctx);
while (ll_dev_cur != NULL) {
- /* If the device is found or a device that doesn't exist is found then it is removed. */
+ /*
+ * If the device is found or
+ * a device that doesn't exist is found then it is removed.
+ */
if (ll_dev_cur == ll_dev_cur_ctx) {
/*
- * If the device is running on a data core then call the function to remove it from
- * the data core.
+ * If the device is running on a data core then call
+ * the function to remove it from the data core.
*/
if ((ll_dev_cur->dev.flags & VIRTIO_DEV_RUNNING))
notify_ops->destroy_device(&(ll_dev_cur->dev));
- ll_dev_cur = rm_config_ll_entry(ll_dev_cur, ll_dev_last);
+ ll_dev_cur = rm_config_ll_entry(ll_dev_cur,
+ ll_dev_last);
} else {
ll_dev_last = ll_dev_cur;
ll_dev_cur = ll_dev_cur->next;
@@ -521,7 +555,8 @@ destroy_device(struct vhost_device_ctx ctx)
/*
* Called from CUSE IOCTL: VHOST_SET_OWNER
- * This function just returns success at the moment unless the device hasn't been initialised.
+ * This function just returns success at the moment unless
+ * the device hasn't been initialised.
*/
static int
set_owner(struct vhost_device_ctx ctx)
@@ -571,7 +606,7 @@ get_features(struct vhost_device_ctx ctx, uint64_t *pu)
/*
* Called from CUSE IOCTL: VHOST_SET_FEATURES
- * We receive the negotiated set of features supported by us and the virtio device.
+ * We receive the negotiated features supported by us and the virtio device.
*/
static int
set_features(struct vhost_device_ctx ctx, uint64_t *pu)
@@ -589,13 +624,17 @@ set_features(struct vhost_device_ctx ctx, uint64_t *pu)
/* Set the vhost_hlen depending on if VIRTIO_NET_F_MRG_RXBUF is set. */
if (dev->features & (1 << VIRTIO_NET_F_MRG_RXBUF)) {
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mergeable RX buffers enabled\n", dev->device_fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") Mergeable RX buffers enabled\n",
+ dev->device_fh);
dev->virtqueue[VIRTIO_RXQ]->vhost_hlen =
sizeof(struct virtio_net_hdr_mrg_rxbuf);
dev->virtqueue[VIRTIO_TXQ]->vhost_hlen =
sizeof(struct virtio_net_hdr_mrg_rxbuf);
} else {
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mergeable RX buffers disabled\n", dev->device_fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") Mergeable RX buffers disabled\n",
+ dev->device_fh);
dev->virtqueue[VIRTIO_RXQ]->vhost_hlen =
sizeof(struct virtio_net_hdr);
dev->virtqueue[VIRTIO_TXQ]->vhost_hlen =
@@ -607,8 +646,8 @@ set_features(struct vhost_device_ctx ctx, uint64_t *pu)
/*
* Called from CUSE IOCTL: VHOST_SET_MEM_TABLE
- * This function creates and populates the memory structure for the device. This includes
- * storing offsets used to translate buffer addresses.
+ * This function creates and populates the memory structure for the device.
+ * This includes storing offsets used to translate buffer addresses.
*/
static int
set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
@@ -634,7 +673,9 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
mem = calloc(1, sizeof(struct virtio_memory) +
(sizeof(struct virtio_memory_regions) * nregions));
if (mem == NULL) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to allocate memory for dev->mem.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to allocate memory for dev->mem.\n",
+ dev->device_fh);
return -1;
}
@@ -656,15 +697,18 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
mem_regions[regionidx].userspace_addr;
LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") REGION: %u - GPA: %p - QEMU VA: %p - SIZE (%"PRIu64")\n", dev->device_fh,
- regionidx, (void *)(uintptr_t)mem->regions[regionidx].guest_phys_address,
- (void *)(uintptr_t)mem->regions[regionidx].userspace_address,
- mem->regions[regionidx].memory_size);
+ regionidx,
+ (void *)(uintptr_t)mem->regions[regionidx].guest_phys_address,
+ (void *)(uintptr_t)mem->regions[regionidx].userspace_address,
+ mem->regions[regionidx].memory_size);
/*set the base address mapping*/
if (mem->regions[regionidx].guest_phys_address == 0x0) {
- mem->base_address = mem->regions[regionidx].userspace_address;
+ mem->base_address =
+ mem->regions[regionidx].userspace_address;
/* Map VM memory file */
- if (host_memory_map(dev, mem, ctx.pid, mem->base_address) != 0) {
+ if (host_memory_map(dev, mem, ctx.pid,
+ mem->base_address) != 0) {
free(mem);
return -1;
}
@@ -678,27 +722,42 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
return -1;
}
- /* Check if all of our regions have valid mappings. Usually one does not exist in the QEMU memory file. */
+ /*
+ * Check if all of our regions have valid mappings.
+ * Usually one does not exist in the QEMU memory file.
+ */
valid_regions = mem->nregions;
for (regionidx = 0; regionidx < mem->nregions; regionidx++) {
- if ((mem->regions[regionidx].userspace_address < mem->base_address) ||
- (mem->regions[regionidx].userspace_address > (mem->base_address + mem->mapped_size)))
+ if ((mem->regions[regionidx].userspace_address <
+ mem->base_address) ||
+ (mem->regions[regionidx].userspace_address >
+ (mem->base_address + mem->mapped_size)))
valid_regions--;
}
- /* If a region does not have a valid mapping we rebuild our memory struct to contain only valid entries. */
+ /*
+ * If a region does not have a valid mapping,
+ * we rebuild our memory struct to contain only valid entries.
+ */
if (valid_regions != mem->nregions) {
LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Not all memory regions exist in the QEMU mem file. Re-populating mem structure\n",
dev->device_fh);
- /* Re-populate the memory structure with only valid regions. Invalid regions are over-written with memmove. */
+ /*
+ * Re-populate the memory structure with only valid regions.
+ * Invalid regions are over-written with memmove.
+ */
valid_regions = 0;
for (regionidx = mem->nregions; 0 != regionidx--;) {
- if ((mem->regions[regionidx].userspace_address < mem->base_address) ||
- (mem->regions[regionidx].userspace_address > (mem->base_address + mem->mapped_size))) {
- memmove(&mem->regions[regionidx], &mem->regions[regionidx + 1],
- sizeof(struct virtio_memory_regions) * valid_regions);
+ if ((mem->regions[regionidx].userspace_address <
+ mem->base_address) ||
+ (mem->regions[regionidx].userspace_address >
+ (mem->base_address + mem->mapped_size))) {
+ memmove(&mem->regions[regionidx],
+ &mem->regions[regionidx + 1],
+ sizeof(struct virtio_memory_regions) *
+ valid_regions);
} else {
valid_regions++;
}
@@ -708,12 +767,16 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
dev->mem = mem;
/*
- * Calculate the address offset for each region. This offset is used to identify the vhost virtual address
+ * Calculate the address offset for each region.
+ * This offset is used to identify the vhost virtual address
* corresponding to a QEMU guest physical address.
*/
for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) {
- dev->mem->regions[regionidx].address_offset = dev->mem->regions[regionidx].userspace_address - dev->mem->base_address
- + dev->mem->mapped_address - dev->mem->regions[regionidx].guest_phys_address;
+ dev->mem->regions[regionidx].address_offset =
+ dev->mem->regions[regionidx].userspace_address -
+ dev->mem->base_address +
+ dev->mem->mapped_address -
+ dev->mem->regions[regionidx].guest_phys_address;
}
return 0;
@@ -732,7 +795,7 @@ set_vring_num(struct vhost_device_ctx ctx, struct vhost_vring_state *state)
if (dev == NULL)
return -1;
- /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* State->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[state->index]->size = state->num;
return 0;
@@ -740,8 +803,8 @@ set_vring_num(struct vhost_device_ctx ctx, struct vhost_vring_state *state)
/*
* Called from CUSE IOCTL: VHOST_SET_VRING_ADDR
- * The virtio device sends us the desc, used and avail ring addresses. This function
- * then converts these to our address space.
+ * The virtio device sends us the desc, used and avail ring addresses.
+ * This function then converts these to our address space.
*/
static int
set_vring_addr(struct vhost_device_ctx ctx, struct vhost_vring_addr *addr)
@@ -753,31 +816,43 @@ set_vring_addr(struct vhost_device_ctx ctx, struct vhost_vring_addr *addr)
if (dev == NULL)
return -1;
- /* addr->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* addr->index refers to the queue index. The txq 1, rxq is 0. */
vq = dev->virtqueue[addr->index];
/* The addresses are converted from QEMU virtual to Vhost virtual. */
- vq->desc = (struct vring_desc *)(uintptr_t)qva_to_vva(dev, addr->desc_user_addr);
+ vq->desc = (struct vring_desc *)(uintptr_t)qva_to_vva(dev,
+ addr->desc_user_addr);
if (vq->desc == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find descriptor ring address.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find desc ring address.\n",
+ dev->device_fh);
return -1;
}
- vq->avail = (struct vring_avail *)(uintptr_t)qva_to_vva(dev, addr->avail_user_addr);
+ vq->avail = (struct vring_avail *)(uintptr_t)qva_to_vva(dev,
+ addr->avail_user_addr);
if (vq->avail == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find available ring address.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find avail ring address.\n",
+ dev->device_fh);
return -1;
}
- vq->used = (struct vring_used *)(uintptr_t)qva_to_vva(dev, addr->used_user_addr);
+ vq->used = (struct vring_used *)(uintptr_t)qva_to_vva(dev,
+ addr->used_user_addr);
if (vq->used == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find used ring address.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find used ring address.\n",
+ dev->device_fh);
return -1;
}
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address desc: %p\n", dev->device_fh, vq->desc);
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address avail: %p\n", dev->device_fh, vq->avail);
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address used: %p\n", dev->device_fh, vq->used);
+ LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address desc: %p\n",
+ dev->device_fh, vq->desc);
+ LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address avail: %p\n",
+ dev->device_fh, vq->avail);
+ LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address used: %p\n",
+ dev->device_fh, vq->used);
return 0;
}
@@ -795,7 +870,7 @@ set_vring_base(struct vhost_device_ctx ctx, struct vhost_vring_state *state)
if (dev == NULL)
return -1;
- /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* State->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[state->index]->last_used_idx = state->num;
dev->virtqueue[state->index]->last_used_idx_res = state->num;
@@ -817,15 +892,15 @@ get_vring_base(struct vhost_device_ctx ctx, uint32_t index,
return -1;
state->index = index;
- /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* State->index refers to the queue index. The txq is 1, rxq is 0. */
state->num = dev->virtqueue[state->index]->last_used_idx;
return 0;
}
/*
- * This function uses the eventfd_link kernel module to copy an eventfd file descriptor
- * provided by QEMU in to our process space.
+ * This function uses the eventfd_link kernel module to copy an eventfd file
+ * descriptor provided by QEMU in to our process space.
*/
static int
eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
@@ -835,7 +910,9 @@ eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
/* Open the character device to the kernel module. */
eventfd_link = open(eventfd_cdev, O_RDWR);
if (eventfd_link < 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") eventfd_link module is not loaded\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") eventfd_link module is not loaded\n",
+ dev->device_fh);
return -1;
}
@@ -844,18 +921,19 @@ eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
close(eventfd_link);
if (ret < 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") EVENTFD_COPY ioctl failed\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") EVENTFD_COPY ioctl failed\n",
+ dev->device_fh);
return -1;
}
-
return 0;
}
/*
* Called from CUSE IOCTL: VHOST_SET_VRING_CALL
- * The virtio device sends an eventfd to interrupt the guest. This fd gets copied in
- * to our process space.
+ * The virtio device sends an eventfd to interrupt the guest. This fd gets
+ * copied into our process space.
*/
static int
set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
@@ -868,7 +946,7 @@ set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
if (dev == NULL)
return -1;
- /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* file->index refers to the queue index. The txq is 1, rxq is 0. */
vq = dev->virtqueue[file->index];
if (vq->kickfd)
@@ -888,8 +966,8 @@ set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
/*
* Called from CUSE IOCTL: VHOST_SET_VRING_KICK
- * The virtio device sends an eventfd that it can use to notify us. This fd gets copied in
- * to our process space.
+ * The virtio device sends an eventfd that it can use to notify us.
+ * This fd gets copied into our process space.
*/
static int
set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
@@ -902,7 +980,7 @@ set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
if (dev == NULL)
return -1;
- /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* file->index refers to the queue index. The txq is 1, rxq is 0. */
vq = dev->virtqueue[file->index];
if (vq->callfd)
@@ -922,10 +1000,12 @@ set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
/*
* Called from CUSE IOCTL: VHOST_NET_SET_BACKEND
- * To complete device initialisation when the virtio driver is loaded we are provided with a
- * valid fd for a tap device (not used by us). If this happens then we can add the device to a
- * data core. When the virtio driver is removed we get fd=-1. At that point we remove the device
- * from the data core. The device will still exist in the device configuration linked list.
+ * To complete device initialisation when the virtio driver is loaded,
+ * we are provided with a valid fd for a tap device (not used by us).
+ * If this happens then we can add the device to a data core.
+ * When the virtio driver is removed we get fd=-1.
+ * At that point we remove the device from the data core.
+ * The device will still exist in the device configuration linked list.
*/
static int
set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
@@ -936,10 +1016,13 @@ set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
if (dev == NULL)
return -1;
- /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* file->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[file->index]->backend = file->fd;
- /* If the device isn't already running and both backend fds are set we add the device. */
+ /*
+ * If the device isn't already running and both backend fds are set,
+ * we add the device.
+ */
if (!(dev->flags & VIRTIO_DEV_RUNNING)) {
if (((int)dev->virtqueue[VIRTIO_TXQ]->backend != VIRTIO_DEV_STOPPED) &&
((int)dev->virtqueue[VIRTIO_RXQ]->backend != VIRTIO_DEV_STOPPED))
@@ -952,8 +1035,8 @@ set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
}
/*
- * Function pointers are set for the device operations to allow CUSE to call functions
- * when an IOCTL, device_add or device_release is received.
+ * Function pointers are set for the device operations to allow CUSE to call
+ * functions when an IOCTL, device_add or device_release is received.
*/
static const struct vhost_net_device_ops vhost_device_ops = {
.new_device = new_device,
@@ -991,11 +1074,13 @@ int rte_vhost_enable_guest_notification(struct virtio_net *dev,
uint16_t queue_id, int enable)
{
if (enable) {
- RTE_LOG(ERR, VHOST_CONFIG, "guest notification isn't supported.\n");
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "guest notification isn't supported.\n");
return -1;
}
- dev->virtqueue[queue_id]->used->flags = enable ? 0 : VRING_USED_F_NO_NOTIFY;
+ dev->virtqueue[queue_id]->used->flags =
+ enable ? 0 : VRING_USED_F_NO_NOTIFY;
return 0;
}
--
1.8.1.4
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
2014-11-05 4:42 Huawei Xie
@ 2014-11-05 9:09 ` Thomas Monjalon
2014-11-05 17:07 ` Xie, Huawei
0 siblings, 1 reply; 10+ messages in thread
From: Thomas Monjalon @ 2014-11-05 9:09 UTC (permalink / raw)
To: Huawei Xie; +Cc: dev
Hi Huawei,
Please set a Signed-off in your patch.
2014-11-05 12:42, Huawei Xie:
> This patch fixes code style issues and refines some comments in vhost library.
>
>
> ---
> lib/librte_vhost/eventfd_link/eventfd_link.c | 244 ++++++++++-----------
> lib/librte_vhost/eventfd_link/eventfd_link.h | 127 ++++++-----
> lib/librte_vhost/rte_virtio_net.h | 3 +-
> lib/librte_vhost/vhost-net-cdev.c | 187 +++++++++-------
> lib/librte_vhost/vhost_rxtx.c | 13 +-
> lib/librte_vhost/virtio-net.c | 317 +++++++++++++++++----------
> 6 files changed, 494 insertions(+), 397 deletions(-)
>
> diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.c b/lib/librte_vhost/eventfd_link/eventfd_link.c
> index fc0653a..542ec2c 100644
> --- a/lib/librte_vhost/eventfd_link/eventfd_link.c
> +++ b/lib/librte_vhost/eventfd_link/eventfd_link.c
> @@ -1,26 +1,26 @@
> /*-
> - * * GPL LICENSE SUMMARY
> - * *
> - * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> - * *
> - * * This program is free software; you can redistribute it and/or modify
> - * * it under the terms of version 2 of the GNU General Public License as
> - * * published by the Free Software Foundation.
> - * *
> - * * This program is distributed in the hope that it will be useful, but
> - * * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> - * * General Public License for more details.
> - * *
> - * * You should have received a copy of the GNU General Public License
> - * * along with this program; if not, write to the Free Software
> - * * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
> - * * The full GNU General Public License is included in this distribution
> - * * in the file called LICENSE.GPL.
> - * *
> - * * Contact Information:
> - * * Intel Corporation
> - * */
> + * GPL LICENSE SUMMARY
> + *
> + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of version 2 of the GNU General Public License as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
> + * The full GNU General Public License is included in this distribution
> + * in the file called LICENSE.GPL.
> + *
> + * Contact Information:
> + * Intel Corporation
> + */
>
> #include <linux/eventfd.h>
> #include <linux/miscdevice.h>
> @@ -42,15 +42,15 @@
> * get_files_struct is copied from fs/file.c
> */
> struct files_struct *
> -get_files_struct (struct task_struct *task)
> +get_files_struct(struct task_struct *task)
> {
> struct files_struct *files;
>
> - task_lock (task);
> + task_lock(task);
> files = task->files;
> if (files)
> - atomic_inc (&files->count);
> - task_unlock (task);
> + atomic_inc(&files->count);
> + task_unlock(task);
>
> return files;
> }
> @@ -59,17 +59,15 @@ get_files_struct (struct task_struct *task)
> * put_files_struct is extracted from fs/file.c
> */
> void
> -put_files_struct (struct files_struct *files)
> +put_files_struct(struct files_struct *files)
> {
> - if (atomic_dec_and_test (&files->count))
> - {
> - BUG ();
> - }
> + if (atomic_dec_and_test(&files->count))
> + BUG();
> }
>
>
> static long
> -eventfd_link_ioctl (struct file *f, unsigned int ioctl, unsigned long arg)
> +eventfd_link_ioctl(struct file *f, unsigned int ioctl, unsigned long arg)
> {
> void __user *argp = (void __user *) arg;
> struct task_struct *task_target = NULL;
> @@ -78,96 +76,88 @@ eventfd_link_ioctl (struct file *f, unsigned int ioctl, unsigned long arg)
> struct fdtable *fdt;
> struct eventfd_copy eventfd_copy;
>
> - switch (ioctl)
> - {
> - case EVENTFD_COPY:
> - if (copy_from_user (&eventfd_copy, argp, sizeof (struct eventfd_copy)))
> - return -EFAULT;
> -
> - /*
> - * Find the task struct for the target pid
> - */
> - task_target =
> - pid_task (find_vpid (eventfd_copy.target_pid), PIDTYPE_PID);
> - if (task_target == NULL)
> - {
> - printk (KERN_DEBUG "Failed to get mem ctx for target pid\n");
> - return -EFAULT;
> - }
> -
> - files = get_files_struct (current);
> - if (files == NULL)
> - {
> - printk (KERN_DEBUG "Failed to get files struct\n");
> - return -EFAULT;
> - }
> -
> - rcu_read_lock ();
> - file = fcheck_files (files, eventfd_copy.source_fd);
> - if (file)
> - {
> - if (file->f_mode & FMODE_PATH
> - || !atomic_long_inc_not_zero (&file->f_count))
> - file = NULL;
> - }
> - rcu_read_unlock ();
> - put_files_struct (files);
> -
> - if (file == NULL)
> - {
> - printk (KERN_DEBUG "Failed to get file from source pid\n");
> - return 0;
> - }
> -
> - /*
> - * Release the existing eventfd in the source process
> - */
> - spin_lock (&files->file_lock);
> - filp_close (file, files);
> - fdt = files_fdtable (files);
> - fdt->fd[eventfd_copy.source_fd] = NULL;
> - spin_unlock (&files->file_lock);
> -
> - /*
> - * Find the file struct associated with the target fd.
> - */
> -
> - files = get_files_struct (task_target);
> - if (files == NULL)
> - {
> - printk (KERN_DEBUG "Failed to get files struct\n");
> - return -EFAULT;
> - }
> -
> - rcu_read_lock ();
> - file = fcheck_files (files, eventfd_copy.target_fd);
> - if (file)
> - {
> - if (file->f_mode & FMODE_PATH
> - || !atomic_long_inc_not_zero (&file->f_count))
> + switch (ioctl) {
> + case EVENTFD_COPY:
> + if (copy_from_user(&eventfd_copy, argp,
> + sizeof(struct eventfd_copy)))
> + return -EFAULT;
> +
> + /*
> + * Find the task struct for the target pid
> + */
> + task_target =
> + pid_task(find_vpid(eventfd_copy.target_pid), PIDTYPE_PID);
> + if (task_target == NULL) {
> + printk(KERN_DEBUG "Failed to get mem ctx for target pid\n");
> + return -EFAULT;
> + }
> +
> + files = get_files_struct(current);
> + if (files == NULL) {
> + printk(KERN_DEBUG "Failed to get files struct\n");
> + return -EFAULT;
> + }
> +
> + rcu_read_lock();
> + file = fcheck_files(files, eventfd_copy.source_fd);
> + if (file) {
> + if (file->f_mode & FMODE_PATH ||
> + !atomic_long_inc_not_zero(&file->f_count))
> + file = NULL;
> + }
> + rcu_read_unlock();
> + put_files_struct(files);
> +
> + if (file == NULL) {
> + printk(KERN_DEBUG "Failed to get file from source pid\n");
> + return 0;
> + }
> +
> + /*
> + * Release the existing eventfd in the source process
> + */
> + spin_lock(&files->file_lock);
> + filp_close(file, files);
> + fdt = files_fdtable(files);
> + fdt->fd[eventfd_copy.source_fd] = NULL;
> + spin_unlock(&files->file_lock);
> +
> + /*
> + * Find the file struct associated with the target fd.
> + */
> +
> + files = get_files_struct(task_target);
> + if (files == NULL) {
> + printk(KERN_DEBUG "Failed to get files struct\n");
> + return -EFAULT;
> + }
> +
> + rcu_read_lock();
> + file = fcheck_files(files, eventfd_copy.target_fd);
> + if (file) {
> + if (file->f_mode & FMODE_PATH ||
> + !atomic_long_inc_not_zero(&file->f_count))
> file = NULL;
> - }
> - rcu_read_unlock ();
> - put_files_struct (files);
> -
> - if (file == NULL)
> - {
> - printk (KERN_DEBUG "Failed to get file from target pid\n");
> - return 0;
> - }
> + }
> + rcu_read_unlock();
> + put_files_struct(files);
>
> + if (file == NULL) {
> + printk(KERN_DEBUG "Failed to get file from target pid\n");
> + return 0;
> + }
>
> - /*
> - * Install the file struct from the target process into the
> - * file desciptor of the source process,
> - */
> + /*
> + * Install the file struct from the target process into the
> + * file desciptor of the source process,
> + */
>
> - fd_install (eventfd_copy.source_fd, file);
> + fd_install(eventfd_copy.source_fd, file);
>
> - return 0;
> + return 0;
>
> - default:
> - return -ENOIOCTLCMD;
> + default:
> + return -ENOIOCTLCMD;
> }
> }
>
> @@ -183,23 +173,23 @@ static struct miscdevice eventfd_link_misc = {
> };
>
> static int __init
> -eventfd_link_init (void)
> +eventfd_link_init(void)
> {
> - return misc_register (&eventfd_link_misc);
> + return misc_register(&eventfd_link_misc);
> }
>
> -module_init (eventfd_link_init);
> +module_init(eventfd_link_init);
>
> static void __exit
> -eventfd_link_exit (void)
> +eventfd_link_exit(void)
> {
> - misc_deregister (&eventfd_link_misc);
> + misc_deregister(&eventfd_link_misc);
> }
>
> -module_exit (eventfd_link_exit);
> +module_exit(eventfd_link_exit);
>
> -MODULE_VERSION ("0.0.1");
> -MODULE_LICENSE ("GPL v2");
> -MODULE_AUTHOR ("Anthony Fee");
> -MODULE_DESCRIPTION ("Link eventfd");
> -MODULE_ALIAS ("devname:eventfd-link");
> +MODULE_VERSION("0.0.1");
> +MODULE_LICENSE("GPL v2");
> +MODULE_AUTHOR("Anthony Fee");
> +MODULE_DESCRIPTION("Link eventfd");
> +MODULE_ALIAS("devname:eventfd-link");
> diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.h b/lib/librte_vhost/eventfd_link/eventfd_link.h
> index a32a8dd..ea619ec 100644
> --- a/lib/librte_vhost/eventfd_link/eventfd_link.h
> +++ b/lib/librte_vhost/eventfd_link/eventfd_link.h
> @@ -1,79 +1,76 @@
> /*-
> - * * This file is provided under a dual BSD/GPLv2 license. When using or
> - * * redistributing this file, you may do so under either license.
> - * *
> - * * GPL LICENSE SUMMARY
> - * *
> - * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> - * *
> - * * This program is free software; you can redistribute it and/or modify
> - * * it under the terms of version 2 of the GNU General Public License as
> - * * published by the Free Software Foundation.
> - * *
> - * * This program is distributed in the hope that it will be useful, but
> - * * WITHOUT ANY WARRANTY; without even the implied warranty of
> - * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> - * * General Public License for more details.
> - * *
> - * * You should have received a copy of the GNU General Public License
> - * * along with this program; if not, write to the Free Software
> - * * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
> - * * The full GNU General Public License is included in this distribution
> - * * in the file called LICENSE.GPL.
> - * *
> - * * Contact Information:
> - * * Intel Corporation
> - * *
> - * * BSD LICENSE
> - * *
> - * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> - * * All rights reserved.
> - * *
> - * * Redistribution and use in source and binary forms, with or without
> - * * modification, are permitted provided that the following conditions
> - * * are met:
> - * *
> - * * * Redistributions of source code must retain the above copyright
> - * * notice, this list of conditions and the following disclaimer.
> - * * * Redistributions in binary form must reproduce the above copyright
> - * * notice, this list of conditions and the following disclaimer in
> - * * the documentation and/or other materials provided with the
> - * * distribution.
> - * * * Neither the name of Intel Corporation nor the names of its
> - * * contributors may be used to endorse or promote products derived
> - * * from this software without specific prior written permission.
> - * *
> - * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
> - * * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
> - * * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
> - * * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
> - * * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
> - * * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
> - * * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
> - * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
> - * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
> - * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
> - * * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> - * *
> - * */
> + * This file is provided under a dual BSD/GPLv2 license. When using or
> + * redistributing this file, you may do so under either license.
> + *
> + * GPL LICENSE SUMMARY
> + *
> + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of version 2 of the GNU General Public License as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * General Public License for more details.
> + *
> + * You should have received a copy of the GNU General Public License
> + * along with this program; if not, write to the Free Software
> + * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
> + * The full GNU General Public License is included in this distribution
> + * in the file called LICENSE.GPL.
> + *
> + * Contact Information:
> + * Intel Corporation
> + *
> + * BSD LICENSE
> + *
> + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
> + * All rights reserved.
> + *
> + * Redistribution and use in source and binary forms, with or without
> + * modification, are permitted provided that the following conditions
> + * are met:
> + *
> + * Redistributions of source code must retain the above copyright
> + * notice, this list of conditions and the following disclaimer.
> + * Redistributions in binary form must reproduce the above copyright
> + * notice, this list of conditions and the following disclaimer in
> + * the documentation and/or other materials provided with the
> + * distribution.
> + * Neither the name of Intel Corporation nor the names of its
> + * contributors may be used to endorse or promote products derived
> + * from this software without specific prior written permission.
> + *
> + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
> + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
> + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
> + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
> + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
> + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
> + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
> + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
> + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
> + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
> + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
> + *
> + */
>
> #ifndef _EVENTFD_LINK_H_
> #define _EVENTFD_LINK_H_
>
> /*
> - * ioctl to copy an fd entry in calling process to an fd in a target process
> + * ioctl to copy an fd entry in calling process to an fd in a target process
> */
> #define EVENTFD_COPY 1
>
> /*
> - * arguements for the EVENTFD_COPY ioctl
> + * arguements for the EVENTFD_COPY ioctl
> */
> struct eventfd_copy {
> - // fd in the target pid
> - unsigned target_fd;
> - // fd in the calling pid
> - unsigned source_fd;
> - // pid of the target pid
> - pid_t target_pid;
> + unsigned target_fd; /* fd in the target pid */
> + unsigned source_fd; /* fd in the calling pid */
> + pid_t target_pid; /* pid of the target pid */
> };
> #endif /* _EVENTFD_LINK_H_ */
> diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h
> index b6548a1..00b1328 100644
> --- a/lib/librte_vhost/rte_virtio_net.h
> +++ b/lib/librte_vhost/rte_virtio_net.h
> @@ -90,8 +90,7 @@ struct vhost_virtqueue {
> /**
> * Device structure contains all configuration information relating to the device.
> */
> -struct virtio_net
> -{
> +struct virtio_net {
> struct vhost_virtqueue *virtqueue[VIRTIO_QNUM]; /**< Contains all virtqueue information. */
> struct virtio_memory *mem; /**< QEMU memory and memory region information. */
> uint64_t features; /**< Negotiated feature set. */
> diff --git a/lib/librte_vhost/vhost-net-cdev.c b/lib/librte_vhost/vhost-net-cdev.c
> index 91ff0d8..57c76cb 100644
> --- a/lib/librte_vhost/vhost-net-cdev.c
> +++ b/lib/librte_vhost/vhost-net-cdev.c
> @@ -46,21 +46,21 @@
>
> #include "vhost-net-cdev.h"
>
> -#define FUSE_OPT_DUMMY "\0\0"
> -#define FUSE_OPT_FORE "-f\0\0"
> -#define FUSE_OPT_NOMULTI "-s\0\0"
> +#define FUSE_OPT_DUMMY "\0\0"
> +#define FUSE_OPT_FORE "-f\0\0"
> +#define FUSE_OPT_NOMULTI "-s\0\0"
>
> -static const uint32_t default_major = 231;
> -static const uint32_t default_minor = 1;
> -static const char cuse_device_name[] = "/dev/cuse";
> -static const char default_cdev[] = "vhost-net";
> +static const uint32_t default_major = 231;
> +static const uint32_t default_minor = 1;
> +static const char cuse_device_name[] = "/dev/cuse";
> +static const char default_cdev[] = "vhost-net";
>
> -static struct fuse_session *session;
> -static struct vhost_net_device_ops const *ops;
> +static struct fuse_session *session;
> +static struct vhost_net_device_ops const *ops;
>
> /*
> - * Returns vhost_device_ctx from given fuse_req_t. The index is populated later when
> - * the device is added to the device linked list.
> + * Returns vhost_device_ctx from given fuse_req_t. The index is populated later
> + * when the device is added to the device linked list.
> */
> static struct vhost_device_ctx
> fuse_req_to_vhost_ctx(fuse_req_t req, struct fuse_file_info *fi)
> @@ -75,7 +75,8 @@ fuse_req_to_vhost_ctx(fuse_req_t req, struct fuse_file_info *fi)
> }
>
> /*
> - * When the device is created in QEMU it gets initialised here and added to the device linked list.
> + * When the device is created in QEMU it gets initialised here and
> + * added to the device linked list.
> */
> static void
> vhost_net_open(fuse_req_t req, struct fuse_file_info *fi)
> @@ -91,7 +92,8 @@ vhost_net_open(fuse_req_t req, struct fuse_file_info *fi)
>
> fi->fh = err;
>
> - RTE_LOG(INFO, VHOST_CONFIG, "(%"PRIu64") Device configuration started\n", fi->fh);
> + RTE_LOG(INFO, VHOST_CONFIG,
> + "(%"PRIu64") Device configuration started\n", fi->fh);
> fuse_reply_open(req, fi);
> }
>
> @@ -113,8 +115,8 @@ vhost_net_release(fuse_req_t req, struct fuse_file_info *fi)
> * Boilerplate code for CUSE IOCTL
> * Implicit arguments: ctx, req, result.
> */
> -#define VHOST_IOCTL(func) do { \
> - result = (func)(ctx); \
> +#define VHOST_IOCTL(func) do { \
> + result = (func)(ctx); \
> fuse_reply_ioctl(req, result, NULL, 0); \
> } while (0)
>
> @@ -122,57 +124,58 @@ vhost_net_release(fuse_req_t req, struct fuse_file_info *fi)
> * Boilerplate IOCTL RETRY
> * Implicit arguments: req.
> */
> -#define VHOST_IOCTL_RETRY(size_r, size_w) do { \
> - struct iovec iov_r = { arg, (size_r) }; \
> - struct iovec iov_w = { arg, (size_w) }; \
> - fuse_reply_ioctl_retry(req, &iov_r, (size_r)?1:0, &iov_w, (size_w)?1:0); \
> +#define VHOST_IOCTL_RETRY(size_r, size_w) do { \
> + struct iovec iov_r = { arg, (size_r) }; \
> + struct iovec iov_w = { arg, (size_w) }; \
> + fuse_reply_ioctl_retry(req, &iov_r, \
> + (size_r) ? 1 : 0, &iov_w, (size_w) ? 1 : 0);\
> } while (0)
>
> /*
> * Boilerplate code for CUSE Read IOCTL
> * Implicit arguments: ctx, req, result, in_bufsz, in_buf.
> */
> -#define VHOST_IOCTL_R(type, var, func) do { \
> - if (!in_bufsz) { \
> - VHOST_IOCTL_RETRY(sizeof(type), 0); \
> - } else { \
> - (var) = *(const type*) in_buf; \
> - result = func(ctx, &(var)); \
> - fuse_reply_ioctl(req, result, NULL, 0); \
> - } \
> +#define VHOST_IOCTL_R(type, var, func) do { \
> + if (!in_bufsz) { \
> + VHOST_IOCTL_RETRY(sizeof(type), 0);\
> + } else { \
> + (var) = *(const type*)in_buf; \
> + result = func(ctx, &(var)); \
> + fuse_reply_ioctl(req, result, NULL, 0);\
> + } \
> } while (0)
>
> /*
> - * Boilerplate code for CUSE Write IOCTL
> + * Boilerplate code for CUSE Write IOCTL
> * Implicit arguments: ctx, req, result, out_bufsz.
> */
> -#define VHOST_IOCTL_W(type, var, func) do { \
> - if (!out_bufsz) { \
> - VHOST_IOCTL_RETRY(0, sizeof(type)); \
> - } else { \
> - result = (func)(ctx, &(var)); \
> - fuse_reply_ioctl(req, result, &(var), sizeof(type)); \
> - } \
> +#define VHOST_IOCTL_W(type, var, func) do { \
> + if (!out_bufsz) { \
> + VHOST_IOCTL_RETRY(0, sizeof(type));\
> + } else { \
> + result = (func)(ctx, &(var));\
> + fuse_reply_ioctl(req, result, &(var), sizeof(type));\
> + } \
> } while (0)
>
> /*
> * Boilerplate code for CUSE Read/Write IOCTL
> * Implicit arguments: ctx, req, result, in_bufsz, in_buf.
> */
> -#define VHOST_IOCTL_RW(type1, var1, type2, var2, func) do { \
> - if (!in_bufsz) { \
> - VHOST_IOCTL_RETRY(sizeof(type1), sizeof(type2)); \
> - } else { \
> - (var1) = *(const type1*) (in_buf); \
> - result = (func)(ctx, (var1), &(var2)); \
> - fuse_reply_ioctl(req, result, &(var2), sizeof(type2)); \
> - } \
> +#define VHOST_IOCTL_RW(type1, var1, type2, var2, func) do { \
> + if (!in_bufsz) { \
> + VHOST_IOCTL_RETRY(sizeof(type1), sizeof(type2));\
> + } else { \
> + (var1) = *(const type1*) (in_buf); \
> + result = (func)(ctx, (var1), &(var2)); \
> + fuse_reply_ioctl(req, result, &(var2), sizeof(type2));\
> + } \
> } while (0)
>
> /*
> - * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on
> - * the type of IOCTL a buffer is requested to read or to write. This
> - * request is handled by FUSE and the buffer is then given to CUSE.
> + * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on the type
> + * of IOCTL a buffer is requested to read or to write. This request is handled
> + * by FUSE and the buffer is then given to CUSE.
> */
> static void
> vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
> @@ -189,33 +192,39 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
>
> switch (cmd) {
> case VHOST_NET_SET_BACKEND:
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n", ctx.fh);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n", ctx.fh);
> VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_backend);
> break;
>
> case VHOST_GET_FEATURES:
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_GET_FEATURES\n", ctx.fh);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: VHOST_GET_FEATURES\n", ctx.fh);
> VHOST_IOCTL_W(uint64_t, features, ops->get_features);
> break;
>
> case VHOST_SET_FEATURES:
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_FEATURES\n", ctx.fh);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: VHOST_SET_FEATURES\n", ctx.fh);
> VHOST_IOCTL_R(uint64_t, features, ops->set_features);
> break;
>
> case VHOST_RESET_OWNER:
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_RESET_OWNER\n", ctx.fh);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: VHOST_RESET_OWNER\n", ctx.fh);
> VHOST_IOCTL(ops->reset_owner);
> break;
>
> case VHOST_SET_OWNER:
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_OWNER\n", ctx.fh);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: VHOST_SET_OWNER\n", ctx.fh);
> VHOST_IOCTL(ops->set_owner);
> break;
>
> case VHOST_SET_MEM_TABLE:
> /*TODO fix race condition.*/
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n", ctx.fh);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n", ctx.fh);
> static struct vhost_memory mem_temp;
>
> switch (in_bufsz) {
> @@ -227,7 +236,9 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
> mem_temp = *(const struct vhost_memory *) in_buf;
>
> if (mem_temp.nregions > 0) {
> - VHOST_IOCTL_RETRY(sizeof(struct vhost_memory) + (sizeof(struct vhost_memory_region) * mem_temp.nregions), 0);
> + VHOST_IOCTL_RETRY(sizeof(struct vhost_memory) +
> + (sizeof(struct vhost_memory_region) *
> + mem_temp.nregions), 0);
> } else {
> result = -1;
> fuse_reply_ioctl(req, result, NULL, 0);
> @@ -235,56 +246,70 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
> break;
>
> default:
> - result = ops->set_mem_table(ctx, in_buf, mem_temp.nregions);
> + result = ops->set_mem_table(ctx,
> + in_buf, mem_temp.nregions);
> if (result)
> fuse_reply_err(req, EINVAL);
> else
> fuse_reply_ioctl(req, result, NULL, 0);
> -
> }
> -
> break;
>
> case VHOST_SET_VRING_NUM:
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_NUM\n", ctx.fh);
> - VHOST_IOCTL_R(struct vhost_vring_state, state, ops->set_vring_num);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: VHOST_SET_VRING_NUM\n", ctx.fh);
> + VHOST_IOCTL_R(struct vhost_vring_state, state,
> + ops->set_vring_num);
> break;
>
> case VHOST_SET_VRING_BASE:
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_BASE\n", ctx.fh);
> - VHOST_IOCTL_R(struct vhost_vring_state, state, ops->set_vring_base);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: VHOST_SET_VRING_BASE\n", ctx.fh);
> + VHOST_IOCTL_R(struct vhost_vring_state, state,
> + ops->set_vring_base);
> break;
>
> case VHOST_GET_VRING_BASE:
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_GET_VRING_BASE\n", ctx.fh);
> - VHOST_IOCTL_RW(uint32_t, index, struct vhost_vring_state, state, ops->get_vring_base);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: VHOST_GET_VRING_BASE\n", ctx.fh);
> + VHOST_IOCTL_RW(uint32_t, index,
> + struct vhost_vring_state, state, ops->get_vring_base);
> break;
>
> case VHOST_SET_VRING_ADDR:
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_ADDR\n", ctx.fh);
> - VHOST_IOCTL_R(struct vhost_vring_addr, addr, ops->set_vring_addr);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: VHOST_SET_VRING_ADDR\n", ctx.fh);
> + VHOST_IOCTL_R(struct vhost_vring_addr, addr,
> + ops->set_vring_addr);
> break;
>
> case VHOST_SET_VRING_KICK:
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_KICK\n", ctx.fh);
> - VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_vring_kick);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: VHOST_SET_VRING_KICK\n", ctx.fh);
> + VHOST_IOCTL_R(struct vhost_vring_file, file,
> + ops->set_vring_kick);
> break;
>
> case VHOST_SET_VRING_CALL:
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_CALL\n", ctx.fh);
> - VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_vring_call);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: VHOST_SET_VRING_CALL\n", ctx.fh);
> + VHOST_IOCTL_R(struct vhost_vring_file, file,
> + ops->set_vring_call);
> break;
>
> default:
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") IOCTL: DOESN NOT EXIST\n", ctx.fh);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: DOESN NOT EXIST\n", ctx.fh);
> result = -1;
> fuse_reply_ioctl(req, result, NULL, 0);
> }
>
> if (result < 0)
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
> else
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
> }
>
> /*
> @@ -297,8 +322,8 @@ static const struct cuse_lowlevel_ops vhost_net_ops = {
> };
>
> /*
> - * cuse_info is populated and used to register the cuse device. vhost_net_device_ops are
> - * also passed when the device is registered in main.c.
> + * cuse_info is populated and used to register the cuse device.
> + * vhost_net_device_ops are also passed when the device is registered in app.
> */
> int
> rte_vhost_driver_register(const char *dev_name)
> @@ -314,20 +339,23 @@ rte_vhost_driver_register(const char *dev_name)
> char *fuse_argv[] = {fuse_opt_dummy, fuse_opt_fore, fuse_opt_nomulti};
>
> if (access(cuse_device_name, R_OK | W_OK) < 0) {
> - RTE_LOG(ERR, VHOST_CONFIG, "Character device %s can't be accessed, maybe not exist\n", cuse_device_name);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "char device %s can't be accessed, maybe not exist\n",
> + cuse_device_name);
> return -1;
> }
>
> /*
> - * The device name is created. This is passed to QEMU so that it can register
> - * the device with our application.
> + * The device name is created. This is passed to QEMU so that it can
> + * register the device with our application.
> */
> snprintf(device_name, PATH_MAX, "DEVNAME=%s", dev_name);
> snprintf(char_device_name, PATH_MAX, "/dev/%s", dev_name);
>
> /* Check if device already exists. */
> if (access(char_device_name, F_OK) != -1) {
> - RTE_LOG(ERR, VHOST_CONFIG, "Character device %s already exists\n", char_device_name);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "char device %s already exists\n", char_device_name);
> return -1;
> }
>
> @@ -341,7 +369,7 @@ rte_vhost_driver_register(const char *dev_name)
> ops = get_virtio_net_callbacks();
>
> session = cuse_lowlevel_setup(3, fuse_argv,
> - &cuse_info, &vhost_net_ops, 0, NULL);
> + &cuse_info, &vhost_net_ops, 0, NULL);
> if (session == NULL)
> return -1;
>
> @@ -349,7 +377,8 @@ rte_vhost_driver_register(const char *dev_name)
> }
>
> /**
> - * The CUSE session is launched allowing the application to receive open, release and ioctl calls.
> + * The CUSE session is launched allowing the application to receive open,
> + * release and ioctl calls.
> */
> int
> rte_vhost_driver_session_start(void)
> diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
> index 84ec0e8..ccfd82f 100644
> --- a/lib/librte_vhost/vhost_rxtx.c
> +++ b/lib/librte_vhost/vhost_rxtx.c
> @@ -45,7 +45,7 @@
> /**
> * This function adds buffers to the virtio devices RX virtqueue. Buffers can
> * be received from the physical port or from another virtio device. A packet
> - * count is returned to indicate the number of packets that were succesfully
> + * count is returned to indicate the number of packets that are succesfully
> * added to the RX queue. This function works when mergeable is disabled.
> */
> static inline uint32_t __attribute__((always_inline))
> @@ -76,7 +76,7 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
> count = (count > MAX_PKT_BURST) ? MAX_PKT_BURST : count;
>
> /*
> - * As many data cores may want access to available buffers,
> + * As many data cores may want access to available buffers,
> * they need to be reserved.
> */
> do {
> @@ -143,7 +143,8 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
> }
>
> /* Update used ring with desc information */
> - vq->used->ring[res_cur_idx & (vq->size - 1)].id = head[packet_success];
> + vq->used->ring[res_cur_idx & (vq->size - 1)].id =
> + head[packet_success];
> vq->used->ring[res_cur_idx & (vq->size - 1)].len = packet_len;
>
> /* Copy mbuf data to buffer */
> @@ -389,10 +390,7 @@ copy_from_mbuf_to_vring(struct virtio_net *dev, uint16_t res_base_idx,
> }
>
> /*
> - * This function adds buffers to the virtio devices RX virtqueue. Buffers can
> - * be received from the physical port or from another virtio device. A packet
> - * count is returned to indicate the number of packets that were succesfully
> - * added to the RX queue. This function works for mergeable RX.
> + * This function works for mergeable RX.
> */
> static inline uint32_t __attribute__((always_inline))
> virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id,
> @@ -729,5 +727,4 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
> if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT))
> eventfd_write((int)vq->kickfd, 1);
> return entry_success;
> -
> }
> diff --git a/lib/librte_vhost/virtio-net.c b/lib/librte_vhost/virtio-net.c
> index 8015dd8..c07a11e 100644
> --- a/lib/librte_vhost/virtio-net.c
> +++ b/lib/librte_vhost/virtio-net.c
> @@ -52,27 +52,27 @@
> #include "vhost-net-cdev.h"
> #include "eventfd_link/eventfd_link.h"
>
> -/**
> +/*
> * Device linked list structure for configuration.
> */
> struct virtio_net_config_ll {
> - struct virtio_net dev; /* Virtio device.*/
> - struct virtio_net_config_ll *next; /* Next entry on linked list.*/
> + struct virtio_net dev; /* Virtio device.*/
> + struct virtio_net_config_ll *next; /* Next dev on linked list.*/
> };
>
> const char eventfd_cdev[] = "/dev/eventfd-link";
>
> -/* device ops to add/remove device to data core. */
> +/* device ops to add/remove device to/from data core. */
> static struct virtio_net_device_ops const *notify_ops;
> -/* Root address of the linked list in the configuration core. */
> -static struct virtio_net_config_ll *ll_root;
> +/* root address of the linked list of managed virtio devices */
> +static struct virtio_net_config_ll *ll_root;
>
> -/* Features supported by this application. RX merge buffers are enabled by default. */
> +/* Features supported by this lib. */
> #define VHOST_SUPPORTED_FEATURES (1ULL << VIRTIO_NET_F_MRG_RXBUF)
> static uint64_t VHOST_FEATURES = VHOST_SUPPORTED_FEATURES;
>
> /* Line size for reading maps file. */
> -const uint32_t BUFSIZE = PATH_MAX;
> +static const uint32_t BUFSIZE = PATH_MAX;
>
> /* Size of prot char array in procmap. */
> #define PROT_SZ 5
> @@ -82,19 +82,19 @@ const uint32_t BUFSIZE = PATH_MAX;
>
> /* Structure containing information gathered from maps file. */
> struct procmap {
> - uint64_t va_start; /* Start virtual address in file. */
> - uint64_t len; /* Size of file. */
> - uint64_t pgoff; /* Not used. */
> - uint32_t maj; /* Not used. */
> - uint32_t min; /* Not used. */
> - uint32_t ino; /* Not used. */
> - char prot[PROT_SZ]; /* Not used. */
> - char fname[PATH_MAX];/* File name. */
> + uint64_t va_start; /* Start virtual address in file. */
> + uint64_t len; /* Size of file. */
> + uint64_t pgoff; /* Not used. */
> + uint32_t maj; /* Not used. */
> + uint32_t min; /* Not used. */
> + uint32_t ino; /* Not used. */
> + char prot[PROT_SZ]; /* Not used. */
> + char fname[PATH_MAX]; /* File name. */
> };
>
> /*
> - * Converts QEMU virtual address to Vhost virtual address. This function is used
> - * to convert the ring addresses to our address space.
> + * Converts QEMU virtual address to Vhost virtual address. This function is
> + * used to convert the ring addresses to our address space.
> */
> static uint64_t
> qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
> @@ -107,8 +107,8 @@ qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
> for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) {
> region = &dev->mem->regions[regionidx];
> if ((qemu_va >= region->userspace_address) &&
> - (qemu_va <= region->userspace_address +
> - region->memory_size)) {
> + (qemu_va <= region->userspace_address +
> + region->memory_size)) {
> vhost_va = dev->mem->mapped_address + qemu_va -
> dev->mem->base_address;
> break;
> @@ -118,7 +118,8 @@ qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
> }
>
> /*
> - * Locate the file containing QEMU's memory space and map it to our address space.
> + * Locate the file containing QEMU's memory space and
> + * map it to our address space.
> */
> static int
> host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
> @@ -134,10 +135,10 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
> char procdir[PATH_MAX];
> char resolved_path[PATH_MAX];
> char *path = NULL;
> - FILE *fmap;
> - void *map;
> - uint8_t found = 0;
> - char line[BUFSIZE];
> + FILE *fmap;
> + void *map;
> + uint8_t found = 0;
> + char line[BUFSIZE];
> char dlm[] = "- : ";
> char *str, *sp, *in[PROCMAP_SZ];
> char *end = NULL;
> @@ -159,7 +160,7 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
> while (fgets(line, BUFSIZE, fmap) != 0) {
> str = line;
> errno = 0;
> - /* Split line in to fields. */
> + /* Split line into fields. */
> for (i = 0; i < PROCMAP_SZ; i++) {
> in[i] = strtok_r(str, &dlm[i], &sp);
> if ((in[i] == NULL) || (errno != 0)) {
> @@ -171,37 +172,43 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
>
> /* Convert/Copy each field as needed. */
> procmap.va_start = strtoull(in[0], &end, 16);
> - if ((in[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
> + if ((in[0] == '\0') || (end == NULL) || (*end != '\0') ||
> + (errno != 0)) {
> fclose(fmap);
> return -1;
> }
>
> procmap.len = strtoull(in[1], &end, 16);
> - if ((in[1] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
> + if ((in[1] == '\0') || (end == NULL) || (*end != '\0') ||
> + (errno != 0)) {
> fclose(fmap);
> return -1;
> }
>
> procmap.pgoff = strtoull(in[3], &end, 16);
> - if ((in[3] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
> + if ((in[3] == '\0') || (end == NULL) || (*end != '\0') ||
> + (errno != 0)) {
> fclose(fmap);
> return -1;
> }
>
> procmap.maj = strtoul(in[4], &end, 16);
> - if ((in[4] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
> + if ((in[4] == '\0') || (end == NULL) || (*end != '\0') ||
> + (errno != 0)) {
> fclose(fmap);
> return -1;
> }
>
> procmap.min = strtoul(in[5], &end, 16);
> - if ((in[5] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
> + if ((in[5] == '\0') || (end == NULL) || (*end != '\0') ||
> + (errno != 0)) {
> fclose(fmap);
> return -1;
> }
>
> procmap.ino = strtoul(in[6], &end, 16);
> - if ((in[6] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
> + if ((in[6] == '\0') || (end == NULL) || (*end != '\0') ||
> + (errno != 0)) {
> fclose(fmap);
> return -1;
> }
> @@ -218,16 +225,19 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
> fclose(fmap);
>
> if (!found) {
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find memory file in pid %d maps file\n", dev->device_fh, pid);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") Failed to find memory file in pid %d maps file\n",
> + dev->device_fh, pid);
> return -1;
> }
>
> /* Find the guest memory file among the process fds. */
> dp = opendir(procdir);
> if (dp == NULL) {
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Cannot open pid %d process directory\n", dev->device_fh, pid);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") Cannot open pid %d process directory\n",
> + dev->device_fh, pid);
> return -1;
> -
> }
>
> found = 0;
> @@ -254,23 +264,29 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
> closedir(dp);
>
> if (found == 0) {
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find memory file for pid %d\n", dev->device_fh, pid);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") Failed to find memory file for pid %d\n",
> + dev->device_fh, pid);
> return -1;
> }
> /* Open the shared memory file and map the memory into this process. */
> fd = open(memfile, O_RDWR);
>
> if (fd == -1) {
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to open %s for pid %d\n", dev->device_fh, memfile, pid);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") Failed to open %s for pid %d\n",
> + dev->device_fh, memfile, pid);
> return -1;
> }
>
> - map = mmap(0, (size_t)procmap.len, PROT_READ|PROT_WRITE ,
> - MAP_POPULATE|MAP_SHARED, fd, 0);
> + map = mmap(0, (size_t)procmap.len, PROT_READ|PROT_WRITE,
> + MAP_POPULATE|MAP_SHARED, fd, 0);
> close(fd);
>
> if (map == MAP_FAILED) {
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Error mapping the file %s for pid %d\n", dev->device_fh, memfile, pid);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") Error mapping the file %s for pid %d\n",
> + dev->device_fh, memfile, pid);
> return -1;
> }
>
> @@ -278,8 +294,11 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
> mem->mapped_address = (uint64_t)(uintptr_t)map;
> mem->mapped_size = procmap.len;
>
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mem File: %s->%s - Size: %llu - VA: %p\n", dev->device_fh,
> - memfile, resolved_path, (long long unsigned)mem->mapped_size, map);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") Mem File: %s->%s - Size: %llu - VA: %p\n",
> + dev->device_fh,
> + memfile, resolved_path,
> + (long long unsigned)mem->mapped_size, map);
>
> return 0;
> }
> @@ -303,7 +322,8 @@ get_config_ll_entry(struct vhost_device_ctx ctx)
> }
>
> /*
> - * Searches the configuration core linked list and retrieves the device if it exists.
> + * Searches the configuration core linked list and
> + * retrieves the device if it exists.
> */
> static struct virtio_net *
> get_device(struct vhost_device_ctx ctx)
> @@ -312,11 +332,11 @@ get_device(struct vhost_device_ctx ctx)
>
> ll_dev = get_config_ll_entry(ctx);
>
> - /* If a matching entry is found in the linked list, return the device in that entry. */
> if (ll_dev)
> return &ll_dev->dev;
>
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Device not found in linked list.\n", ctx.fh);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") Device not found in linked list.\n", ctx.fh);
> return NULL;
> }
>
> @@ -331,13 +351,18 @@ add_config_ll_entry(struct virtio_net_config_ll *new_ll_dev)
> /* If ll_dev == NULL then this is the first device so go to else */
> if (ll_dev) {
> /* If the 1st device_fh != 0 then we insert our device here. */
> - if (ll_dev->dev.device_fh != 0) {
> + if (ll_dev->dev.device_fh != 0) {
> new_ll_dev->dev.device_fh = 0;
> new_ll_dev->next = ll_dev;
> ll_root = new_ll_dev;
> } else {
> - /* Increment through the ll until we find un unused device_fh. Insert the device at that entry*/
> - while ((ll_dev->next != NULL) && (ll_dev->dev.device_fh == (ll_dev->next->dev.device_fh - 1)))
> + /*
> + * Increment through the ll until we find un unused
> + * device_fh. Insert the device at that entry.
> + */
> + while ((ll_dev->next != NULL) &&
> + (ll_dev->dev.device_fh ==
> + (ll_dev->next->dev.device_fh - 1)))
> ll_dev = ll_dev->next;
>
> new_ll_dev->dev.device_fh = ll_dev->dev.device_fh + 1;
> @@ -352,7 +377,8 @@ add_config_ll_entry(struct virtio_net_config_ll *new_ll_dev)
> }
>
> /*
> - * Unmap any memory, close any file descriptors and free any memory owned by a device.
> + * Unmap any memory, close any file descriptors and
> + * free any memory owned by a device.
> */
> static void
> cleanup_device(struct virtio_net *dev)
> @@ -386,6 +412,7 @@ free_device(struct virtio_net_config_ll *ll_dev)
> free(ll_dev->dev.virtqueue[VIRTIO_TXQ]);
> free(ll_dev);
> }
> +
> /*
> * Remove an entry from the device configuration linked list.
> */
> @@ -423,7 +450,10 @@ init_device(struct virtio_net *dev)
> {
> uint64_t vq_offset;
>
> - /* Virtqueues have already been malloced so we don't want to set them to NULL. */
> + /*
> + * Virtqueues have already been malloced so
> + * we don't want to set them to NULL.
> + */
> vq_offset = offsetof(struct virtio_net, mem);
>
> /* Set everything to 0. */
> @@ -491,8 +521,8 @@ new_device(struct vhost_device_ctx ctx)
> }
>
> /*
> - * Function is called from the CUSE release function. This function will cleanup
> - * the device and remove it from device configuration linked list.
> + * Function is called from the CUSE release function. This function will
> + * cleanup the device and remove it from device configuration linked list.
> */
> static void
> destroy_device(struct vhost_device_ctx ctx)
> @@ -503,15 +533,19 @@ destroy_device(struct vhost_device_ctx ctx)
> /* Find the linked list entry for the device to be removed. */
> ll_dev_cur_ctx = get_config_ll_entry(ctx);
> while (ll_dev_cur != NULL) {
> - /* If the device is found or a device that doesn't exist is found then it is removed. */
> + /*
> + * If the device is found or
> + * a device that doesn't exist is found then it is removed.
> + */
> if (ll_dev_cur == ll_dev_cur_ctx) {
> /*
> - * If the device is running on a data core then call the function to remove it from
> - * the data core.
> + * If the device is running on a data core then call
> + * the function to remove it from the data core.
> */
> if ((ll_dev_cur->dev.flags & VIRTIO_DEV_RUNNING))
> notify_ops->destroy_device(&(ll_dev_cur->dev));
> - ll_dev_cur = rm_config_ll_entry(ll_dev_cur, ll_dev_last);
> + ll_dev_cur = rm_config_ll_entry(ll_dev_cur,
> + ll_dev_last);
> } else {
> ll_dev_last = ll_dev_cur;
> ll_dev_cur = ll_dev_cur->next;
> @@ -521,7 +555,8 @@ destroy_device(struct vhost_device_ctx ctx)
>
> /*
> * Called from CUSE IOCTL: VHOST_SET_OWNER
> - * This function just returns success at the moment unless the device hasn't been initialised.
> + * This function just returns success at the moment unless
> + * the device hasn't been initialised.
> */
> static int
> set_owner(struct vhost_device_ctx ctx)
> @@ -571,7 +606,7 @@ get_features(struct vhost_device_ctx ctx, uint64_t *pu)
>
> /*
> * Called from CUSE IOCTL: VHOST_SET_FEATURES
> - * We receive the negotiated set of features supported by us and the virtio device.
> + * We receive the negotiated features supported by us and the virtio device.
> */
> static int
> set_features(struct vhost_device_ctx ctx, uint64_t *pu)
> @@ -589,13 +624,17 @@ set_features(struct vhost_device_ctx ctx, uint64_t *pu)
>
> /* Set the vhost_hlen depending on if VIRTIO_NET_F_MRG_RXBUF is set. */
> if (dev->features & (1 << VIRTIO_NET_F_MRG_RXBUF)) {
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mergeable RX buffers enabled\n", dev->device_fh);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") Mergeable RX buffers enabled\n",
> + dev->device_fh);
> dev->virtqueue[VIRTIO_RXQ]->vhost_hlen =
> sizeof(struct virtio_net_hdr_mrg_rxbuf);
> dev->virtqueue[VIRTIO_TXQ]->vhost_hlen =
> sizeof(struct virtio_net_hdr_mrg_rxbuf);
> } else {
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mergeable RX buffers disabled\n", dev->device_fh);
> + LOG_DEBUG(VHOST_CONFIG,
> + "(%"PRIu64") Mergeable RX buffers disabled\n",
> + dev->device_fh);
> dev->virtqueue[VIRTIO_RXQ]->vhost_hlen =
> sizeof(struct virtio_net_hdr);
> dev->virtqueue[VIRTIO_TXQ]->vhost_hlen =
> @@ -607,8 +646,8 @@ set_features(struct vhost_device_ctx ctx, uint64_t *pu)
>
> /*
> * Called from CUSE IOCTL: VHOST_SET_MEM_TABLE
> - * This function creates and populates the memory structure for the device. This includes
> - * storing offsets used to translate buffer addresses.
> + * This function creates and populates the memory structure for the device.
> + * This includes storing offsets used to translate buffer addresses.
> */
> static int
> set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
> @@ -634,7 +673,9 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
> mem = calloc(1, sizeof(struct virtio_memory) +
> (sizeof(struct virtio_memory_regions) * nregions));
> if (mem == NULL) {
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to allocate memory for dev->mem.\n", dev->device_fh);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") Failed to allocate memory for dev->mem.\n",
> + dev->device_fh);
> return -1;
> }
>
> @@ -656,15 +697,18 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
> mem_regions[regionidx].userspace_addr;
>
> LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") REGION: %u - GPA: %p - QEMU VA: %p - SIZE (%"PRIu64")\n", dev->device_fh,
> - regionidx, (void *)(uintptr_t)mem->regions[regionidx].guest_phys_address,
> - (void *)(uintptr_t)mem->regions[regionidx].userspace_address,
> - mem->regions[regionidx].memory_size);
> + regionidx,
> + (void *)(uintptr_t)mem->regions[regionidx].guest_phys_address,
> + (void *)(uintptr_t)mem->regions[regionidx].userspace_address,
> + mem->regions[regionidx].memory_size);
>
> /*set the base address mapping*/
> if (mem->regions[regionidx].guest_phys_address == 0x0) {
> - mem->base_address = mem->regions[regionidx].userspace_address;
> + mem->base_address =
> + mem->regions[regionidx].userspace_address;
> /* Map VM memory file */
> - if (host_memory_map(dev, mem, ctx.pid, mem->base_address) != 0) {
> + if (host_memory_map(dev, mem, ctx.pid,
> + mem->base_address) != 0) {
> free(mem);
> return -1;
> }
> @@ -678,27 +722,42 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
> return -1;
> }
>
> - /* Check if all of our regions have valid mappings. Usually one does not exist in the QEMU memory file. */
> + /*
> + * Check if all of our regions have valid mappings.
> + * Usually one does not exist in the QEMU memory file.
> + */
> valid_regions = mem->nregions;
> for (regionidx = 0; regionidx < mem->nregions; regionidx++) {
> - if ((mem->regions[regionidx].userspace_address < mem->base_address) ||
> - (mem->regions[regionidx].userspace_address > (mem->base_address + mem->mapped_size)))
> + if ((mem->regions[regionidx].userspace_address <
> + mem->base_address) ||
> + (mem->regions[regionidx].userspace_address >
> + (mem->base_address + mem->mapped_size)))
> valid_regions--;
> }
>
> - /* If a region does not have a valid mapping we rebuild our memory struct to contain only valid entries. */
> + /*
> + * If a region does not have a valid mapping,
> + * we rebuild our memory struct to contain only valid entries.
> + */
> if (valid_regions != mem->nregions) {
> LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Not all memory regions exist in the QEMU mem file. Re-populating mem structure\n",
> dev->device_fh);
>
> - /* Re-populate the memory structure with only valid regions. Invalid regions are over-written with memmove. */
> + /*
> + * Re-populate the memory structure with only valid regions.
> + * Invalid regions are over-written with memmove.
> + */
> valid_regions = 0;
>
> for (regionidx = mem->nregions; 0 != regionidx--;) {
> - if ((mem->regions[regionidx].userspace_address < mem->base_address) ||
> - (mem->regions[regionidx].userspace_address > (mem->base_address + mem->mapped_size))) {
> - memmove(&mem->regions[regionidx], &mem->regions[regionidx + 1],
> - sizeof(struct virtio_memory_regions) * valid_regions);
> + if ((mem->regions[regionidx].userspace_address <
> + mem->base_address) ||
> + (mem->regions[regionidx].userspace_address >
> + (mem->base_address + mem->mapped_size))) {
> + memmove(&mem->regions[regionidx],
> + &mem->regions[regionidx + 1],
> + sizeof(struct virtio_memory_regions) *
> + valid_regions);
> } else {
> valid_regions++;
> }
> @@ -708,12 +767,16 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
> dev->mem = mem;
>
> /*
> - * Calculate the address offset for each region. This offset is used to identify the vhost virtual address
> + * Calculate the address offset for each region.
> + * This offset is used to identify the vhost virtual address
> * corresponding to a QEMU guest physical address.
> */
> for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) {
> - dev->mem->regions[regionidx].address_offset = dev->mem->regions[regionidx].userspace_address - dev->mem->base_address
> - + dev->mem->mapped_address - dev->mem->regions[regionidx].guest_phys_address;
> + dev->mem->regions[regionidx].address_offset =
> + dev->mem->regions[regionidx].userspace_address -
> + dev->mem->base_address +
> + dev->mem->mapped_address -
> + dev->mem->regions[regionidx].guest_phys_address;
>
> }
> return 0;
> @@ -732,7 +795,7 @@ set_vring_num(struct vhost_device_ctx ctx, struct vhost_vring_state *state)
> if (dev == NULL)
> return -1;
>
> - /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
> + /* State->index refers to the queue index. The txq is 1, rxq is 0. */
> dev->virtqueue[state->index]->size = state->num;
>
> return 0;
> @@ -740,8 +803,8 @@ set_vring_num(struct vhost_device_ctx ctx, struct vhost_vring_state *state)
>
> /*
> * Called from CUSE IOCTL: VHOST_SET_VRING_ADDR
> - * The virtio device sends us the desc, used and avail ring addresses. This function
> - * then converts these to our address space.
> + * The virtio device sends us the desc, used and avail ring addresses.
> + * This function then converts these to our address space.
> */
> static int
> set_vring_addr(struct vhost_device_ctx ctx, struct vhost_vring_addr *addr)
> @@ -753,31 +816,43 @@ set_vring_addr(struct vhost_device_ctx ctx, struct vhost_vring_addr *addr)
> if (dev == NULL)
> return -1;
>
> - /* addr->index refers to the queue index. The TX queue is 1, RX queue is 0. */
> + /* addr->index refers to the queue index. The txq 1, rxq is 0. */
> vq = dev->virtqueue[addr->index];
>
> /* The addresses are converted from QEMU virtual to Vhost virtual. */
> - vq->desc = (struct vring_desc *)(uintptr_t)qva_to_vva(dev, addr->desc_user_addr);
> + vq->desc = (struct vring_desc *)(uintptr_t)qva_to_vva(dev,
> + addr->desc_user_addr);
> if (vq->desc == 0) {
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find descriptor ring address.\n", dev->device_fh);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") Failed to find desc ring address.\n",
> + dev->device_fh);
> return -1;
> }
>
> - vq->avail = (struct vring_avail *)(uintptr_t)qva_to_vva(dev, addr->avail_user_addr);
> + vq->avail = (struct vring_avail *)(uintptr_t)qva_to_vva(dev,
> + addr->avail_user_addr);
> if (vq->avail == 0) {
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find available ring address.\n", dev->device_fh);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") Failed to find avail ring address.\n",
> + dev->device_fh);
> return -1;
> }
>
> - vq->used = (struct vring_used *)(uintptr_t)qva_to_vva(dev, addr->used_user_addr);
> + vq->used = (struct vring_used *)(uintptr_t)qva_to_vva(dev,
> + addr->used_user_addr);
> if (vq->used == 0) {
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find used ring address.\n", dev->device_fh);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") Failed to find used ring address.\n",
> + dev->device_fh);
> return -1;
> }
>
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address desc: %p\n", dev->device_fh, vq->desc);
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address avail: %p\n", dev->device_fh, vq->avail);
> - LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address used: %p\n", dev->device_fh, vq->used);
> + LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address desc: %p\n",
> + dev->device_fh, vq->desc);
> + LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address avail: %p\n",
> + dev->device_fh, vq->avail);
> + LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address used: %p\n",
> + dev->device_fh, vq->used);
>
> return 0;
> }
> @@ -795,7 +870,7 @@ set_vring_base(struct vhost_device_ctx ctx, struct vhost_vring_state *state)
> if (dev == NULL)
> return -1;
>
> - /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
> + /* State->index refers to the queue index. The txq is 1, rxq is 0. */
> dev->virtqueue[state->index]->last_used_idx = state->num;
> dev->virtqueue[state->index]->last_used_idx_res = state->num;
>
> @@ -817,15 +892,15 @@ get_vring_base(struct vhost_device_ctx ctx, uint32_t index,
> return -1;
>
> state->index = index;
> - /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
> + /* State->index refers to the queue index. The txq is 1, rxq is 0. */
> state->num = dev->virtqueue[state->index]->last_used_idx;
>
> return 0;
> }
>
> /*
> - * This function uses the eventfd_link kernel module to copy an eventfd file descriptor
> - * provided by QEMU in to our process space.
> + * This function uses the eventfd_link kernel module to copy an eventfd file
> + * descriptor provided by QEMU in to our process space.
> */
> static int
> eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
> @@ -835,7 +910,9 @@ eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
> /* Open the character device to the kernel module. */
> eventfd_link = open(eventfd_cdev, O_RDWR);
> if (eventfd_link < 0) {
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") eventfd_link module is not loaded\n", dev->device_fh);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") eventfd_link module is not loaded\n",
> + dev->device_fh);
> return -1;
> }
>
> @@ -844,18 +921,19 @@ eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
> close(eventfd_link);
>
> if (ret < 0) {
> - RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") EVENTFD_COPY ioctl failed\n", dev->device_fh);
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "(%"PRIu64") EVENTFD_COPY ioctl failed\n",
> + dev->device_fh);
> return -1;
> }
>
> -
> return 0;
> }
>
> /*
> * Called from CUSE IOCTL: VHOST_SET_VRING_CALL
> - * The virtio device sends an eventfd to interrupt the guest. This fd gets copied in
> - * to our process space.
> + * The virtio device sends an eventfd to interrupt the guest. This fd gets
> + * copied into our process space.
> */
> static int
> set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
> @@ -868,7 +946,7 @@ set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
> if (dev == NULL)
> return -1;
>
> - /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
> + /* file->index refers to the queue index. The txq is 1, rxq is 0. */
> vq = dev->virtqueue[file->index];
>
> if (vq->kickfd)
> @@ -888,8 +966,8 @@ set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
>
> /*
> * Called from CUSE IOCTL: VHOST_SET_VRING_KICK
> - * The virtio device sends an eventfd that it can use to notify us. This fd gets copied in
> - * to our process space.
> + * The virtio device sends an eventfd that it can use to notify us.
> + * This fd gets copied into our process space.
> */
> static int
> set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
> @@ -902,7 +980,7 @@ set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
> if (dev == NULL)
> return -1;
>
> - /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
> + /* file->index refers to the queue index. The txq is 1, rxq is 0. */
> vq = dev->virtqueue[file->index];
>
> if (vq->callfd)
> @@ -922,10 +1000,12 @@ set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
>
> /*
> * Called from CUSE IOCTL: VHOST_NET_SET_BACKEND
> - * To complete device initialisation when the virtio driver is loaded we are provided with a
> - * valid fd for a tap device (not used by us). If this happens then we can add the device to a
> - * data core. When the virtio driver is removed we get fd=-1. At that point we remove the device
> - * from the data core. The device will still exist in the device configuration linked list.
> + * To complete device initialisation when the virtio driver is loaded,
> + * we are provided with a valid fd for a tap device (not used by us).
> + * If this happens then we can add the device to a data core.
> + * When the virtio driver is removed we get fd=-1.
> + * At that point we remove the device from the data core.
> + * The device will still exist in the device configuration linked list.
> */
> static int
> set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
> @@ -936,10 +1016,13 @@ set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
> if (dev == NULL)
> return -1;
>
> - /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
> + /* file->index refers to the queue index. The txq is 1, rxq is 0. */
> dev->virtqueue[file->index]->backend = file->fd;
>
> - /* If the device isn't already running and both backend fds are set we add the device. */
> + /*
> + * If the device isn't already running and both backend fds are set,
> + * we add the device.
> + */
> if (!(dev->flags & VIRTIO_DEV_RUNNING)) {
> if (((int)dev->virtqueue[VIRTIO_TXQ]->backend != VIRTIO_DEV_STOPPED) &&
> ((int)dev->virtqueue[VIRTIO_RXQ]->backend != VIRTIO_DEV_STOPPED))
> @@ -952,8 +1035,8 @@ set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
> }
>
> /*
> - * Function pointers are set for the device operations to allow CUSE to call functions
> - * when an IOCTL, device_add or device_release is received.
> + * Function pointers are set for the device operations to allow CUSE to call
> + * functions when an IOCTL, device_add or device_release is received.
> */
> static const struct vhost_net_device_ops vhost_device_ops = {
> .new_device = new_device,
> @@ -991,11 +1074,13 @@ int rte_vhost_enable_guest_notification(struct virtio_net *dev,
> uint16_t queue_id, int enable)
> {
> if (enable) {
> - RTE_LOG(ERR, VHOST_CONFIG, "guest notification isn't supported.\n");
> + RTE_LOG(ERR, VHOST_CONFIG,
> + "guest notification isn't supported.\n");
> return -1;
> }
>
> - dev->virtqueue[queue_id]->used->flags = enable ? 0 : VRING_USED_F_NO_NOTIFY;
> + dev->virtqueue[queue_id]->used->flags =
> + enable ? 0 : VRING_USED_F_NO_NOTIFY;
> return 0;
> }
>
>
--
Thomas
^ permalink raw reply [flat|nested] 10+ messages in thread
* [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes
@ 2014-11-05 4:42 Huawei Xie
2014-11-05 9:09 ` Thomas Monjalon
0 siblings, 1 reply; 10+ messages in thread
From: Huawei Xie @ 2014-11-05 4:42 UTC (permalink / raw)
To: dev
This patch fixes code style issues and refines some comments in vhost library.
---
lib/librte_vhost/eventfd_link/eventfd_link.c | 244 ++++++++++-----------
lib/librte_vhost/eventfd_link/eventfd_link.h | 127 ++++++-----
lib/librte_vhost/rte_virtio_net.h | 3 +-
lib/librte_vhost/vhost-net-cdev.c | 187 +++++++++-------
lib/librte_vhost/vhost_rxtx.c | 13 +-
lib/librte_vhost/virtio-net.c | 317 +++++++++++++++++----------
6 files changed, 494 insertions(+), 397 deletions(-)
diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.c b/lib/librte_vhost/eventfd_link/eventfd_link.c
index fc0653a..542ec2c 100644
--- a/lib/librte_vhost/eventfd_link/eventfd_link.c
+++ b/lib/librte_vhost/eventfd_link/eventfd_link.c
@@ -1,26 +1,26 @@
/*-
- * * GPL LICENSE SUMMARY
- * *
- * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * *
- * * This program is free software; you can redistribute it and/or modify
- * * it under the terms of version 2 of the GNU General Public License as
- * * published by the Free Software Foundation.
- * *
- * * This program is distributed in the hope that it will be useful, but
- * * WITHOUT ANY WARRANTY; without even the implied warranty of
- * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * * General Public License for more details.
- * *
- * * You should have received a copy of the GNU General Public License
- * * along with this program; if not, write to the Free Software
- * * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * * The full GNU General Public License is included in this distribution
- * * in the file called LICENSE.GPL.
- * *
- * * Contact Information:
- * * Intel Corporation
- * */
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ * Intel Corporation
+ */
#include <linux/eventfd.h>
#include <linux/miscdevice.h>
@@ -42,15 +42,15 @@
* get_files_struct is copied from fs/file.c
*/
struct files_struct *
-get_files_struct (struct task_struct *task)
+get_files_struct(struct task_struct *task)
{
struct files_struct *files;
- task_lock (task);
+ task_lock(task);
files = task->files;
if (files)
- atomic_inc (&files->count);
- task_unlock (task);
+ atomic_inc(&files->count);
+ task_unlock(task);
return files;
}
@@ -59,17 +59,15 @@ get_files_struct (struct task_struct *task)
* put_files_struct is extracted from fs/file.c
*/
void
-put_files_struct (struct files_struct *files)
+put_files_struct(struct files_struct *files)
{
- if (atomic_dec_and_test (&files->count))
- {
- BUG ();
- }
+ if (atomic_dec_and_test(&files->count))
+ BUG();
}
static long
-eventfd_link_ioctl (struct file *f, unsigned int ioctl, unsigned long arg)
+eventfd_link_ioctl(struct file *f, unsigned int ioctl, unsigned long arg)
{
void __user *argp = (void __user *) arg;
struct task_struct *task_target = NULL;
@@ -78,96 +76,88 @@ eventfd_link_ioctl (struct file *f, unsigned int ioctl, unsigned long arg)
struct fdtable *fdt;
struct eventfd_copy eventfd_copy;
- switch (ioctl)
- {
- case EVENTFD_COPY:
- if (copy_from_user (&eventfd_copy, argp, sizeof (struct eventfd_copy)))
- return -EFAULT;
-
- /*
- * Find the task struct for the target pid
- */
- task_target =
- pid_task (find_vpid (eventfd_copy.target_pid), PIDTYPE_PID);
- if (task_target == NULL)
- {
- printk (KERN_DEBUG "Failed to get mem ctx for target pid\n");
- return -EFAULT;
- }
-
- files = get_files_struct (current);
- if (files == NULL)
- {
- printk (KERN_DEBUG "Failed to get files struct\n");
- return -EFAULT;
- }
-
- rcu_read_lock ();
- file = fcheck_files (files, eventfd_copy.source_fd);
- if (file)
- {
- if (file->f_mode & FMODE_PATH
- || !atomic_long_inc_not_zero (&file->f_count))
- file = NULL;
- }
- rcu_read_unlock ();
- put_files_struct (files);
-
- if (file == NULL)
- {
- printk (KERN_DEBUG "Failed to get file from source pid\n");
- return 0;
- }
-
- /*
- * Release the existing eventfd in the source process
- */
- spin_lock (&files->file_lock);
- filp_close (file, files);
- fdt = files_fdtable (files);
- fdt->fd[eventfd_copy.source_fd] = NULL;
- spin_unlock (&files->file_lock);
-
- /*
- * Find the file struct associated with the target fd.
- */
-
- files = get_files_struct (task_target);
- if (files == NULL)
- {
- printk (KERN_DEBUG "Failed to get files struct\n");
- return -EFAULT;
- }
-
- rcu_read_lock ();
- file = fcheck_files (files, eventfd_copy.target_fd);
- if (file)
- {
- if (file->f_mode & FMODE_PATH
- || !atomic_long_inc_not_zero (&file->f_count))
+ switch (ioctl) {
+ case EVENTFD_COPY:
+ if (copy_from_user(&eventfd_copy, argp,
+ sizeof(struct eventfd_copy)))
+ return -EFAULT;
+
+ /*
+ * Find the task struct for the target pid
+ */
+ task_target =
+ pid_task(find_vpid(eventfd_copy.target_pid), PIDTYPE_PID);
+ if (task_target == NULL) {
+ printk(KERN_DEBUG "Failed to get mem ctx for target pid\n");
+ return -EFAULT;
+ }
+
+ files = get_files_struct(current);
+ if (files == NULL) {
+ printk(KERN_DEBUG "Failed to get files struct\n");
+ return -EFAULT;
+ }
+
+ rcu_read_lock();
+ file = fcheck_files(files, eventfd_copy.source_fd);
+ if (file) {
+ if (file->f_mode & FMODE_PATH ||
+ !atomic_long_inc_not_zero(&file->f_count))
+ file = NULL;
+ }
+ rcu_read_unlock();
+ put_files_struct(files);
+
+ if (file == NULL) {
+ printk(KERN_DEBUG "Failed to get file from source pid\n");
+ return 0;
+ }
+
+ /*
+ * Release the existing eventfd in the source process
+ */
+ spin_lock(&files->file_lock);
+ filp_close(file, files);
+ fdt = files_fdtable(files);
+ fdt->fd[eventfd_copy.source_fd] = NULL;
+ spin_unlock(&files->file_lock);
+
+ /*
+ * Find the file struct associated with the target fd.
+ */
+
+ files = get_files_struct(task_target);
+ if (files == NULL) {
+ printk(KERN_DEBUG "Failed to get files struct\n");
+ return -EFAULT;
+ }
+
+ rcu_read_lock();
+ file = fcheck_files(files, eventfd_copy.target_fd);
+ if (file) {
+ if (file->f_mode & FMODE_PATH ||
+ !atomic_long_inc_not_zero(&file->f_count))
file = NULL;
- }
- rcu_read_unlock ();
- put_files_struct (files);
-
- if (file == NULL)
- {
- printk (KERN_DEBUG "Failed to get file from target pid\n");
- return 0;
- }
+ }
+ rcu_read_unlock();
+ put_files_struct(files);
+ if (file == NULL) {
+ printk(KERN_DEBUG "Failed to get file from target pid\n");
+ return 0;
+ }
- /*
- * Install the file struct from the target process into the
- * file desciptor of the source process,
- */
+ /*
+ * Install the file struct from the target process into the
+ * file desciptor of the source process,
+ */
- fd_install (eventfd_copy.source_fd, file);
+ fd_install(eventfd_copy.source_fd, file);
- return 0;
+ return 0;
- default:
- return -ENOIOCTLCMD;
+ default:
+ return -ENOIOCTLCMD;
}
}
@@ -183,23 +173,23 @@ static struct miscdevice eventfd_link_misc = {
};
static int __init
-eventfd_link_init (void)
+eventfd_link_init(void)
{
- return misc_register (&eventfd_link_misc);
+ return misc_register(&eventfd_link_misc);
}
-module_init (eventfd_link_init);
+module_init(eventfd_link_init);
static void __exit
-eventfd_link_exit (void)
+eventfd_link_exit(void)
{
- misc_deregister (&eventfd_link_misc);
+ misc_deregister(&eventfd_link_misc);
}
-module_exit (eventfd_link_exit);
+module_exit(eventfd_link_exit);
-MODULE_VERSION ("0.0.1");
-MODULE_LICENSE ("GPL v2");
-MODULE_AUTHOR ("Anthony Fee");
-MODULE_DESCRIPTION ("Link eventfd");
-MODULE_ALIAS ("devname:eventfd-link");
+MODULE_VERSION("0.0.1");
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Anthony Fee");
+MODULE_DESCRIPTION("Link eventfd");
+MODULE_ALIAS("devname:eventfd-link");
diff --git a/lib/librte_vhost/eventfd_link/eventfd_link.h b/lib/librte_vhost/eventfd_link/eventfd_link.h
index a32a8dd..ea619ec 100644
--- a/lib/librte_vhost/eventfd_link/eventfd_link.h
+++ b/lib/librte_vhost/eventfd_link/eventfd_link.h
@@ -1,79 +1,76 @@
/*-
- * * This file is provided under a dual BSD/GPLv2 license. When using or
- * * redistributing this file, you may do so under either license.
- * *
- * * GPL LICENSE SUMMARY
- * *
- * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * *
- * * This program is free software; you can redistribute it and/or modify
- * * it under the terms of version 2 of the GNU General Public License as
- * * published by the Free Software Foundation.
- * *
- * * This program is distributed in the hope that it will be useful, but
- * * WITHOUT ANY WARRANTY; without even the implied warranty of
- * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * * General Public License for more details.
- * *
- * * You should have received a copy of the GNU General Public License
- * * along with this program; if not, write to the Free Software
- * * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
- * * The full GNU General Public License is included in this distribution
- * * in the file called LICENSE.GPL.
- * *
- * * Contact Information:
- * * Intel Corporation
- * *
- * * BSD LICENSE
- * *
- * * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- * * All rights reserved.
- * *
- * * Redistribution and use in source and binary forms, with or without
- * * modification, are permitted provided that the following conditions
- * * are met:
- * *
- * * * Redistributions of source code must retain the above copyright
- * * notice, this list of conditions and the following disclaimer.
- * * * Redistributions in binary form must reproduce the above copyright
- * * notice, this list of conditions and the following disclaimer in
- * * the documentation and/or other materials provided with the
- * * distribution.
- * * * Neither the name of Intel Corporation nor the names of its
- * * contributors may be used to endorse or promote products derived
- * * from this software without specific prior written permission.
- * *
- * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * *
- * */
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ * Intel Corporation
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
#ifndef _EVENTFD_LINK_H_
#define _EVENTFD_LINK_H_
/*
- * ioctl to copy an fd entry in calling process to an fd in a target process
+ * ioctl to copy an fd entry in calling process to an fd in a target process
*/
#define EVENTFD_COPY 1
/*
- * arguements for the EVENTFD_COPY ioctl
+ * arguements for the EVENTFD_COPY ioctl
*/
struct eventfd_copy {
- // fd in the target pid
- unsigned target_fd;
- // fd in the calling pid
- unsigned source_fd;
- // pid of the target pid
- pid_t target_pid;
+ unsigned target_fd; /* fd in the target pid */
+ unsigned source_fd; /* fd in the calling pid */
+ pid_t target_pid; /* pid of the target pid */
};
#endif /* _EVENTFD_LINK_H_ */
diff --git a/lib/librte_vhost/rte_virtio_net.h b/lib/librte_vhost/rte_virtio_net.h
index b6548a1..00b1328 100644
--- a/lib/librte_vhost/rte_virtio_net.h
+++ b/lib/librte_vhost/rte_virtio_net.h
@@ -90,8 +90,7 @@ struct vhost_virtqueue {
/**
* Device structure contains all configuration information relating to the device.
*/
-struct virtio_net
-{
+struct virtio_net {
struct vhost_virtqueue *virtqueue[VIRTIO_QNUM]; /**< Contains all virtqueue information. */
struct virtio_memory *mem; /**< QEMU memory and memory region information. */
uint64_t features; /**< Negotiated feature set. */
diff --git a/lib/librte_vhost/vhost-net-cdev.c b/lib/librte_vhost/vhost-net-cdev.c
index 91ff0d8..57c76cb 100644
--- a/lib/librte_vhost/vhost-net-cdev.c
+++ b/lib/librte_vhost/vhost-net-cdev.c
@@ -46,21 +46,21 @@
#include "vhost-net-cdev.h"
-#define FUSE_OPT_DUMMY "\0\0"
-#define FUSE_OPT_FORE "-f\0\0"
-#define FUSE_OPT_NOMULTI "-s\0\0"
+#define FUSE_OPT_DUMMY "\0\0"
+#define FUSE_OPT_FORE "-f\0\0"
+#define FUSE_OPT_NOMULTI "-s\0\0"
-static const uint32_t default_major = 231;
-static const uint32_t default_minor = 1;
-static const char cuse_device_name[] = "/dev/cuse";
-static const char default_cdev[] = "vhost-net";
+static const uint32_t default_major = 231;
+static const uint32_t default_minor = 1;
+static const char cuse_device_name[] = "/dev/cuse";
+static const char default_cdev[] = "vhost-net";
-static struct fuse_session *session;
-static struct vhost_net_device_ops const *ops;
+static struct fuse_session *session;
+static struct vhost_net_device_ops const *ops;
/*
- * Returns vhost_device_ctx from given fuse_req_t. The index is populated later when
- * the device is added to the device linked list.
+ * Returns vhost_device_ctx from given fuse_req_t. The index is populated later
+ * when the device is added to the device linked list.
*/
static struct vhost_device_ctx
fuse_req_to_vhost_ctx(fuse_req_t req, struct fuse_file_info *fi)
@@ -75,7 +75,8 @@ fuse_req_to_vhost_ctx(fuse_req_t req, struct fuse_file_info *fi)
}
/*
- * When the device is created in QEMU it gets initialised here and added to the device linked list.
+ * When the device is created in QEMU it gets initialised here and
+ * added to the device linked list.
*/
static void
vhost_net_open(fuse_req_t req, struct fuse_file_info *fi)
@@ -91,7 +92,8 @@ vhost_net_open(fuse_req_t req, struct fuse_file_info *fi)
fi->fh = err;
- RTE_LOG(INFO, VHOST_CONFIG, "(%"PRIu64") Device configuration started\n", fi->fh);
+ RTE_LOG(INFO, VHOST_CONFIG,
+ "(%"PRIu64") Device configuration started\n", fi->fh);
fuse_reply_open(req, fi);
}
@@ -113,8 +115,8 @@ vhost_net_release(fuse_req_t req, struct fuse_file_info *fi)
* Boilerplate code for CUSE IOCTL
* Implicit arguments: ctx, req, result.
*/
-#define VHOST_IOCTL(func) do { \
- result = (func)(ctx); \
+#define VHOST_IOCTL(func) do { \
+ result = (func)(ctx); \
fuse_reply_ioctl(req, result, NULL, 0); \
} while (0)
@@ -122,57 +124,58 @@ vhost_net_release(fuse_req_t req, struct fuse_file_info *fi)
* Boilerplate IOCTL RETRY
* Implicit arguments: req.
*/
-#define VHOST_IOCTL_RETRY(size_r, size_w) do { \
- struct iovec iov_r = { arg, (size_r) }; \
- struct iovec iov_w = { arg, (size_w) }; \
- fuse_reply_ioctl_retry(req, &iov_r, (size_r)?1:0, &iov_w, (size_w)?1:0); \
+#define VHOST_IOCTL_RETRY(size_r, size_w) do { \
+ struct iovec iov_r = { arg, (size_r) }; \
+ struct iovec iov_w = { arg, (size_w) }; \
+ fuse_reply_ioctl_retry(req, &iov_r, \
+ (size_r) ? 1 : 0, &iov_w, (size_w) ? 1 : 0);\
} while (0)
/*
* Boilerplate code for CUSE Read IOCTL
* Implicit arguments: ctx, req, result, in_bufsz, in_buf.
*/
-#define VHOST_IOCTL_R(type, var, func) do { \
- if (!in_bufsz) { \
- VHOST_IOCTL_RETRY(sizeof(type), 0); \
- } else { \
- (var) = *(const type*) in_buf; \
- result = func(ctx, &(var)); \
- fuse_reply_ioctl(req, result, NULL, 0); \
- } \
+#define VHOST_IOCTL_R(type, var, func) do { \
+ if (!in_bufsz) { \
+ VHOST_IOCTL_RETRY(sizeof(type), 0);\
+ } else { \
+ (var) = *(const type*)in_buf; \
+ result = func(ctx, &(var)); \
+ fuse_reply_ioctl(req, result, NULL, 0);\
+ } \
} while (0)
/*
- * Boilerplate code for CUSE Write IOCTL
+ * Boilerplate code for CUSE Write IOCTL
* Implicit arguments: ctx, req, result, out_bufsz.
*/
-#define VHOST_IOCTL_W(type, var, func) do { \
- if (!out_bufsz) { \
- VHOST_IOCTL_RETRY(0, sizeof(type)); \
- } else { \
- result = (func)(ctx, &(var)); \
- fuse_reply_ioctl(req, result, &(var), sizeof(type)); \
- } \
+#define VHOST_IOCTL_W(type, var, func) do { \
+ if (!out_bufsz) { \
+ VHOST_IOCTL_RETRY(0, sizeof(type));\
+ } else { \
+ result = (func)(ctx, &(var));\
+ fuse_reply_ioctl(req, result, &(var), sizeof(type));\
+ } \
} while (0)
/*
* Boilerplate code for CUSE Read/Write IOCTL
* Implicit arguments: ctx, req, result, in_bufsz, in_buf.
*/
-#define VHOST_IOCTL_RW(type1, var1, type2, var2, func) do { \
- if (!in_bufsz) { \
- VHOST_IOCTL_RETRY(sizeof(type1), sizeof(type2)); \
- } else { \
- (var1) = *(const type1*) (in_buf); \
- result = (func)(ctx, (var1), &(var2)); \
- fuse_reply_ioctl(req, result, &(var2), sizeof(type2)); \
- } \
+#define VHOST_IOCTL_RW(type1, var1, type2, var2, func) do { \
+ if (!in_bufsz) { \
+ VHOST_IOCTL_RETRY(sizeof(type1), sizeof(type2));\
+ } else { \
+ (var1) = *(const type1*) (in_buf); \
+ result = (func)(ctx, (var1), &(var2)); \
+ fuse_reply_ioctl(req, result, &(var2), sizeof(type2));\
+ } \
} while (0)
/*
- * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on
- * the type of IOCTL a buffer is requested to read or to write. This
- * request is handled by FUSE and the buffer is then given to CUSE.
+ * The IOCTLs are handled using CUSE/FUSE in userspace. Depending on the type
+ * of IOCTL a buffer is requested to read or to write. This request is handled
+ * by FUSE and the buffer is then given to CUSE.
*/
static void
vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
@@ -189,33 +192,39 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
switch (cmd) {
case VHOST_NET_SET_BACKEND:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_NET_SET_BACKEND\n", ctx.fh);
VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_backend);
break;
case VHOST_GET_FEATURES:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_GET_FEATURES\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_GET_FEATURES\n", ctx.fh);
VHOST_IOCTL_W(uint64_t, features, ops->get_features);
break;
case VHOST_SET_FEATURES:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_FEATURES\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_FEATURES\n", ctx.fh);
VHOST_IOCTL_R(uint64_t, features, ops->set_features);
break;
case VHOST_RESET_OWNER:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_RESET_OWNER\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_RESET_OWNER\n", ctx.fh);
VHOST_IOCTL(ops->reset_owner);
break;
case VHOST_SET_OWNER:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_OWNER\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_OWNER\n", ctx.fh);
VHOST_IOCTL(ops->set_owner);
break;
case VHOST_SET_MEM_TABLE:
/*TODO fix race condition.*/
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_MEM_TABLE\n", ctx.fh);
static struct vhost_memory mem_temp;
switch (in_bufsz) {
@@ -227,7 +236,9 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
mem_temp = *(const struct vhost_memory *) in_buf;
if (mem_temp.nregions > 0) {
- VHOST_IOCTL_RETRY(sizeof(struct vhost_memory) + (sizeof(struct vhost_memory_region) * mem_temp.nregions), 0);
+ VHOST_IOCTL_RETRY(sizeof(struct vhost_memory) +
+ (sizeof(struct vhost_memory_region) *
+ mem_temp.nregions), 0);
} else {
result = -1;
fuse_reply_ioctl(req, result, NULL, 0);
@@ -235,56 +246,70 @@ vhost_net_ioctl(fuse_req_t req, int cmd, void *arg,
break;
default:
- result = ops->set_mem_table(ctx, in_buf, mem_temp.nregions);
+ result = ops->set_mem_table(ctx,
+ in_buf, mem_temp.nregions);
if (result)
fuse_reply_err(req, EINVAL);
else
fuse_reply_ioctl(req, result, NULL, 0);
-
}
-
break;
case VHOST_SET_VRING_NUM:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_NUM\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_state, state, ops->set_vring_num);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_NUM\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_state, state,
+ ops->set_vring_num);
break;
case VHOST_SET_VRING_BASE:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_BASE\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_state, state, ops->set_vring_base);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_BASE\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_state, state,
+ ops->set_vring_base);
break;
case VHOST_GET_VRING_BASE:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_GET_VRING_BASE\n", ctx.fh);
- VHOST_IOCTL_RW(uint32_t, index, struct vhost_vring_state, state, ops->get_vring_base);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_GET_VRING_BASE\n", ctx.fh);
+ VHOST_IOCTL_RW(uint32_t, index,
+ struct vhost_vring_state, state, ops->get_vring_base);
break;
case VHOST_SET_VRING_ADDR:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_ADDR\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_addr, addr, ops->set_vring_addr);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_ADDR\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_addr, addr,
+ ops->set_vring_addr);
break;
case VHOST_SET_VRING_KICK:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_KICK\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_vring_kick);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_KICK\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_file, file,
+ ops->set_vring_kick);
break;
case VHOST_SET_VRING_CALL:
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: VHOST_SET_VRING_CALL\n", ctx.fh);
- VHOST_IOCTL_R(struct vhost_vring_file, file, ops->set_vring_call);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: VHOST_SET_VRING_CALL\n", ctx.fh);
+ VHOST_IOCTL_R(struct vhost_vring_file, file,
+ ops->set_vring_call);
break;
default:
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") IOCTL: DOESN NOT EXIST\n", ctx.fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: DOESN NOT EXIST\n", ctx.fh);
result = -1;
fuse_reply_ioctl(req, result, NULL, 0);
}
if (result < 0)
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: FAIL\n", ctx.fh);
else
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") IOCTL: SUCCESS\n", ctx.fh);
}
/*
@@ -297,8 +322,8 @@ static const struct cuse_lowlevel_ops vhost_net_ops = {
};
/*
- * cuse_info is populated and used to register the cuse device. vhost_net_device_ops are
- * also passed when the device is registered in main.c.
+ * cuse_info is populated and used to register the cuse device.
+ * vhost_net_device_ops are also passed when the device is registered in app.
*/
int
rte_vhost_driver_register(const char *dev_name)
@@ -314,20 +339,23 @@ rte_vhost_driver_register(const char *dev_name)
char *fuse_argv[] = {fuse_opt_dummy, fuse_opt_fore, fuse_opt_nomulti};
if (access(cuse_device_name, R_OK | W_OK) < 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "Character device %s can't be accessed, maybe not exist\n", cuse_device_name);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "char device %s can't be accessed, maybe not exist\n",
+ cuse_device_name);
return -1;
}
/*
- * The device name is created. This is passed to QEMU so that it can register
- * the device with our application.
+ * The device name is created. This is passed to QEMU so that it can
+ * register the device with our application.
*/
snprintf(device_name, PATH_MAX, "DEVNAME=%s", dev_name);
snprintf(char_device_name, PATH_MAX, "/dev/%s", dev_name);
/* Check if device already exists. */
if (access(char_device_name, F_OK) != -1) {
- RTE_LOG(ERR, VHOST_CONFIG, "Character device %s already exists\n", char_device_name);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "char device %s already exists\n", char_device_name);
return -1;
}
@@ -341,7 +369,7 @@ rte_vhost_driver_register(const char *dev_name)
ops = get_virtio_net_callbacks();
session = cuse_lowlevel_setup(3, fuse_argv,
- &cuse_info, &vhost_net_ops, 0, NULL);
+ &cuse_info, &vhost_net_ops, 0, NULL);
if (session == NULL)
return -1;
@@ -349,7 +377,8 @@ rte_vhost_driver_register(const char *dev_name)
}
/**
- * The CUSE session is launched allowing the application to receive open, release and ioctl calls.
+ * The CUSE session is launched allowing the application to receive open,
+ * release and ioctl calls.
*/
int
rte_vhost_driver_session_start(void)
diff --git a/lib/librte_vhost/vhost_rxtx.c b/lib/librte_vhost/vhost_rxtx.c
index 84ec0e8..ccfd82f 100644
--- a/lib/librte_vhost/vhost_rxtx.c
+++ b/lib/librte_vhost/vhost_rxtx.c
@@ -45,7 +45,7 @@
/**
* This function adds buffers to the virtio devices RX virtqueue. Buffers can
* be received from the physical port or from another virtio device. A packet
- * count is returned to indicate the number of packets that were succesfully
+ * count is returned to indicate the number of packets that are succesfully
* added to the RX queue. This function works when mergeable is disabled.
*/
static inline uint32_t __attribute__((always_inline))
@@ -76,7 +76,7 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
count = (count > MAX_PKT_BURST) ? MAX_PKT_BURST : count;
/*
- * As many data cores may want access to available buffers,
+ * As many data cores may want access to available buffers,
* they need to be reserved.
*/
do {
@@ -143,7 +143,8 @@ virtio_dev_rx(struct virtio_net *dev, uint16_t queue_id,
}
/* Update used ring with desc information */
- vq->used->ring[res_cur_idx & (vq->size - 1)].id = head[packet_success];
+ vq->used->ring[res_cur_idx & (vq->size - 1)].id =
+ head[packet_success];
vq->used->ring[res_cur_idx & (vq->size - 1)].len = packet_len;
/* Copy mbuf data to buffer */
@@ -389,10 +390,7 @@ copy_from_mbuf_to_vring(struct virtio_net *dev, uint16_t res_base_idx,
}
/*
- * This function adds buffers to the virtio devices RX virtqueue. Buffers can
- * be received from the physical port or from another virtio device. A packet
- * count is returned to indicate the number of packets that were succesfully
- * added to the RX queue. This function works for mergeable RX.
+ * This function works for mergeable RX.
*/
static inline uint32_t __attribute__((always_inline))
virtio_dev_merge_rx(struct virtio_net *dev, uint16_t queue_id,
@@ -729,5 +727,4 @@ rte_vhost_dequeue_burst(struct virtio_net *dev, uint16_t queue_id,
if (!(vq->avail->flags & VRING_AVAIL_F_NO_INTERRUPT))
eventfd_write((int)vq->kickfd, 1);
return entry_success;
-
}
diff --git a/lib/librte_vhost/virtio-net.c b/lib/librte_vhost/virtio-net.c
index 8015dd8..c07a11e 100644
--- a/lib/librte_vhost/virtio-net.c
+++ b/lib/librte_vhost/virtio-net.c
@@ -52,27 +52,27 @@
#include "vhost-net-cdev.h"
#include "eventfd_link/eventfd_link.h"
-/**
+/*
* Device linked list structure for configuration.
*/
struct virtio_net_config_ll {
- struct virtio_net dev; /* Virtio device.*/
- struct virtio_net_config_ll *next; /* Next entry on linked list.*/
+ struct virtio_net dev; /* Virtio device.*/
+ struct virtio_net_config_ll *next; /* Next dev on linked list.*/
};
const char eventfd_cdev[] = "/dev/eventfd-link";
-/* device ops to add/remove device to data core. */
+/* device ops to add/remove device to/from data core. */
static struct virtio_net_device_ops const *notify_ops;
-/* Root address of the linked list in the configuration core. */
-static struct virtio_net_config_ll *ll_root;
+/* root address of the linked list of managed virtio devices */
+static struct virtio_net_config_ll *ll_root;
-/* Features supported by this application. RX merge buffers are enabled by default. */
+/* Features supported by this lib. */
#define VHOST_SUPPORTED_FEATURES (1ULL << VIRTIO_NET_F_MRG_RXBUF)
static uint64_t VHOST_FEATURES = VHOST_SUPPORTED_FEATURES;
/* Line size for reading maps file. */
-const uint32_t BUFSIZE = PATH_MAX;
+static const uint32_t BUFSIZE = PATH_MAX;
/* Size of prot char array in procmap. */
#define PROT_SZ 5
@@ -82,19 +82,19 @@ const uint32_t BUFSIZE = PATH_MAX;
/* Structure containing information gathered from maps file. */
struct procmap {
- uint64_t va_start; /* Start virtual address in file. */
- uint64_t len; /* Size of file. */
- uint64_t pgoff; /* Not used. */
- uint32_t maj; /* Not used. */
- uint32_t min; /* Not used. */
- uint32_t ino; /* Not used. */
- char prot[PROT_SZ]; /* Not used. */
- char fname[PATH_MAX];/* File name. */
+ uint64_t va_start; /* Start virtual address in file. */
+ uint64_t len; /* Size of file. */
+ uint64_t pgoff; /* Not used. */
+ uint32_t maj; /* Not used. */
+ uint32_t min; /* Not used. */
+ uint32_t ino; /* Not used. */
+ char prot[PROT_SZ]; /* Not used. */
+ char fname[PATH_MAX]; /* File name. */
};
/*
- * Converts QEMU virtual address to Vhost virtual address. This function is used
- * to convert the ring addresses to our address space.
+ * Converts QEMU virtual address to Vhost virtual address. This function is
+ * used to convert the ring addresses to our address space.
*/
static uint64_t
qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
@@ -107,8 +107,8 @@ qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) {
region = &dev->mem->regions[regionidx];
if ((qemu_va >= region->userspace_address) &&
- (qemu_va <= region->userspace_address +
- region->memory_size)) {
+ (qemu_va <= region->userspace_address +
+ region->memory_size)) {
vhost_va = dev->mem->mapped_address + qemu_va -
dev->mem->base_address;
break;
@@ -118,7 +118,8 @@ qva_to_vva(struct virtio_net *dev, uint64_t qemu_va)
}
/*
- * Locate the file containing QEMU's memory space and map it to our address space.
+ * Locate the file containing QEMU's memory space and
+ * map it to our address space.
*/
static int
host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
@@ -134,10 +135,10 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
char procdir[PATH_MAX];
char resolved_path[PATH_MAX];
char *path = NULL;
- FILE *fmap;
- void *map;
- uint8_t found = 0;
- char line[BUFSIZE];
+ FILE *fmap;
+ void *map;
+ uint8_t found = 0;
+ char line[BUFSIZE];
char dlm[] = "- : ";
char *str, *sp, *in[PROCMAP_SZ];
char *end = NULL;
@@ -159,7 +160,7 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
while (fgets(line, BUFSIZE, fmap) != 0) {
str = line;
errno = 0;
- /* Split line in to fields. */
+ /* Split line into fields. */
for (i = 0; i < PROCMAP_SZ; i++) {
in[i] = strtok_r(str, &dlm[i], &sp);
if ((in[i] == NULL) || (errno != 0)) {
@@ -171,37 +172,43 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
/* Convert/Copy each field as needed. */
procmap.va_start = strtoull(in[0], &end, 16);
- if ((in[0] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[0] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.len = strtoull(in[1], &end, 16);
- if ((in[1] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[1] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.pgoff = strtoull(in[3], &end, 16);
- if ((in[3] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[3] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.maj = strtoul(in[4], &end, 16);
- if ((in[4] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[4] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.min = strtoul(in[5], &end, 16);
- if ((in[5] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[5] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
procmap.ino = strtoul(in[6], &end, 16);
- if ((in[6] == '\0') || (end == NULL) || (*end != '\0') || (errno != 0)) {
+ if ((in[6] == '\0') || (end == NULL) || (*end != '\0') ||
+ (errno != 0)) {
fclose(fmap);
return -1;
}
@@ -218,16 +225,19 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
fclose(fmap);
if (!found) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find memory file in pid %d maps file\n", dev->device_fh, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find memory file in pid %d maps file\n",
+ dev->device_fh, pid);
return -1;
}
/* Find the guest memory file among the process fds. */
dp = opendir(procdir);
if (dp == NULL) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Cannot open pid %d process directory\n", dev->device_fh, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Cannot open pid %d process directory\n",
+ dev->device_fh, pid);
return -1;
-
}
found = 0;
@@ -254,23 +264,29 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
closedir(dp);
if (found == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find memory file for pid %d\n", dev->device_fh, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find memory file for pid %d\n",
+ dev->device_fh, pid);
return -1;
}
/* Open the shared memory file and map the memory into this process. */
fd = open(memfile, O_RDWR);
if (fd == -1) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to open %s for pid %d\n", dev->device_fh, memfile, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to open %s for pid %d\n",
+ dev->device_fh, memfile, pid);
return -1;
}
- map = mmap(0, (size_t)procmap.len, PROT_READ|PROT_WRITE ,
- MAP_POPULATE|MAP_SHARED, fd, 0);
+ map = mmap(0, (size_t)procmap.len, PROT_READ|PROT_WRITE,
+ MAP_POPULATE|MAP_SHARED, fd, 0);
close(fd);
if (map == MAP_FAILED) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Error mapping the file %s for pid %d\n", dev->device_fh, memfile, pid);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Error mapping the file %s for pid %d\n",
+ dev->device_fh, memfile, pid);
return -1;
}
@@ -278,8 +294,11 @@ host_memory_map(struct virtio_net *dev, struct virtio_memory *mem,
mem->mapped_address = (uint64_t)(uintptr_t)map;
mem->mapped_size = procmap.len;
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mem File: %s->%s - Size: %llu - VA: %p\n", dev->device_fh,
- memfile, resolved_path, (long long unsigned)mem->mapped_size, map);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") Mem File: %s->%s - Size: %llu - VA: %p\n",
+ dev->device_fh,
+ memfile, resolved_path,
+ (long long unsigned)mem->mapped_size, map);
return 0;
}
@@ -303,7 +322,8 @@ get_config_ll_entry(struct vhost_device_ctx ctx)
}
/*
- * Searches the configuration core linked list and retrieves the device if it exists.
+ * Searches the configuration core linked list and
+ * retrieves the device if it exists.
*/
static struct virtio_net *
get_device(struct vhost_device_ctx ctx)
@@ -312,11 +332,11 @@ get_device(struct vhost_device_ctx ctx)
ll_dev = get_config_ll_entry(ctx);
- /* If a matching entry is found in the linked list, return the device in that entry. */
if (ll_dev)
return &ll_dev->dev;
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Device not found in linked list.\n", ctx.fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Device not found in linked list.\n", ctx.fh);
return NULL;
}
@@ -331,13 +351,18 @@ add_config_ll_entry(struct virtio_net_config_ll *new_ll_dev)
/* If ll_dev == NULL then this is the first device so go to else */
if (ll_dev) {
/* If the 1st device_fh != 0 then we insert our device here. */
- if (ll_dev->dev.device_fh != 0) {
+ if (ll_dev->dev.device_fh != 0) {
new_ll_dev->dev.device_fh = 0;
new_ll_dev->next = ll_dev;
ll_root = new_ll_dev;
} else {
- /* Increment through the ll until we find un unused device_fh. Insert the device at that entry*/
- while ((ll_dev->next != NULL) && (ll_dev->dev.device_fh == (ll_dev->next->dev.device_fh - 1)))
+ /*
+ * Increment through the ll until we find un unused
+ * device_fh. Insert the device at that entry.
+ */
+ while ((ll_dev->next != NULL) &&
+ (ll_dev->dev.device_fh ==
+ (ll_dev->next->dev.device_fh - 1)))
ll_dev = ll_dev->next;
new_ll_dev->dev.device_fh = ll_dev->dev.device_fh + 1;
@@ -352,7 +377,8 @@ add_config_ll_entry(struct virtio_net_config_ll *new_ll_dev)
}
/*
- * Unmap any memory, close any file descriptors and free any memory owned by a device.
+ * Unmap any memory, close any file descriptors and
+ * free any memory owned by a device.
*/
static void
cleanup_device(struct virtio_net *dev)
@@ -386,6 +412,7 @@ free_device(struct virtio_net_config_ll *ll_dev)
free(ll_dev->dev.virtqueue[VIRTIO_TXQ]);
free(ll_dev);
}
+
/*
* Remove an entry from the device configuration linked list.
*/
@@ -423,7 +450,10 @@ init_device(struct virtio_net *dev)
{
uint64_t vq_offset;
- /* Virtqueues have already been malloced so we don't want to set them to NULL. */
+ /*
+ * Virtqueues have already been malloced so
+ * we don't want to set them to NULL.
+ */
vq_offset = offsetof(struct virtio_net, mem);
/* Set everything to 0. */
@@ -491,8 +521,8 @@ new_device(struct vhost_device_ctx ctx)
}
/*
- * Function is called from the CUSE release function. This function will cleanup
- * the device and remove it from device configuration linked list.
+ * Function is called from the CUSE release function. This function will
+ * cleanup the device and remove it from device configuration linked list.
*/
static void
destroy_device(struct vhost_device_ctx ctx)
@@ -503,15 +533,19 @@ destroy_device(struct vhost_device_ctx ctx)
/* Find the linked list entry for the device to be removed. */
ll_dev_cur_ctx = get_config_ll_entry(ctx);
while (ll_dev_cur != NULL) {
- /* If the device is found or a device that doesn't exist is found then it is removed. */
+ /*
+ * If the device is found or
+ * a device that doesn't exist is found then it is removed.
+ */
if (ll_dev_cur == ll_dev_cur_ctx) {
/*
- * If the device is running on a data core then call the function to remove it from
- * the data core.
+ * If the device is running on a data core then call
+ * the function to remove it from the data core.
*/
if ((ll_dev_cur->dev.flags & VIRTIO_DEV_RUNNING))
notify_ops->destroy_device(&(ll_dev_cur->dev));
- ll_dev_cur = rm_config_ll_entry(ll_dev_cur, ll_dev_last);
+ ll_dev_cur = rm_config_ll_entry(ll_dev_cur,
+ ll_dev_last);
} else {
ll_dev_last = ll_dev_cur;
ll_dev_cur = ll_dev_cur->next;
@@ -521,7 +555,8 @@ destroy_device(struct vhost_device_ctx ctx)
/*
* Called from CUSE IOCTL: VHOST_SET_OWNER
- * This function just returns success at the moment unless the device hasn't been initialised.
+ * This function just returns success at the moment unless
+ * the device hasn't been initialised.
*/
static int
set_owner(struct vhost_device_ctx ctx)
@@ -571,7 +606,7 @@ get_features(struct vhost_device_ctx ctx, uint64_t *pu)
/*
* Called from CUSE IOCTL: VHOST_SET_FEATURES
- * We receive the negotiated set of features supported by us and the virtio device.
+ * We receive the negotiated features supported by us and the virtio device.
*/
static int
set_features(struct vhost_device_ctx ctx, uint64_t *pu)
@@ -589,13 +624,17 @@ set_features(struct vhost_device_ctx ctx, uint64_t *pu)
/* Set the vhost_hlen depending on if VIRTIO_NET_F_MRG_RXBUF is set. */
if (dev->features & (1 << VIRTIO_NET_F_MRG_RXBUF)) {
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mergeable RX buffers enabled\n", dev->device_fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") Mergeable RX buffers enabled\n",
+ dev->device_fh);
dev->virtqueue[VIRTIO_RXQ]->vhost_hlen =
sizeof(struct virtio_net_hdr_mrg_rxbuf);
dev->virtqueue[VIRTIO_TXQ]->vhost_hlen =
sizeof(struct virtio_net_hdr_mrg_rxbuf);
} else {
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Mergeable RX buffers disabled\n", dev->device_fh);
+ LOG_DEBUG(VHOST_CONFIG,
+ "(%"PRIu64") Mergeable RX buffers disabled\n",
+ dev->device_fh);
dev->virtqueue[VIRTIO_RXQ]->vhost_hlen =
sizeof(struct virtio_net_hdr);
dev->virtqueue[VIRTIO_TXQ]->vhost_hlen =
@@ -607,8 +646,8 @@ set_features(struct vhost_device_ctx ctx, uint64_t *pu)
/*
* Called from CUSE IOCTL: VHOST_SET_MEM_TABLE
- * This function creates and populates the memory structure for the device. This includes
- * storing offsets used to translate buffer addresses.
+ * This function creates and populates the memory structure for the device.
+ * This includes storing offsets used to translate buffer addresses.
*/
static int
set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
@@ -634,7 +673,9 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
mem = calloc(1, sizeof(struct virtio_memory) +
(sizeof(struct virtio_memory_regions) * nregions));
if (mem == NULL) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to allocate memory for dev->mem.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to allocate memory for dev->mem.\n",
+ dev->device_fh);
return -1;
}
@@ -656,15 +697,18 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
mem_regions[regionidx].userspace_addr;
LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") REGION: %u - GPA: %p - QEMU VA: %p - SIZE (%"PRIu64")\n", dev->device_fh,
- regionidx, (void *)(uintptr_t)mem->regions[regionidx].guest_phys_address,
- (void *)(uintptr_t)mem->regions[regionidx].userspace_address,
- mem->regions[regionidx].memory_size);
+ regionidx,
+ (void *)(uintptr_t)mem->regions[regionidx].guest_phys_address,
+ (void *)(uintptr_t)mem->regions[regionidx].userspace_address,
+ mem->regions[regionidx].memory_size);
/*set the base address mapping*/
if (mem->regions[regionidx].guest_phys_address == 0x0) {
- mem->base_address = mem->regions[regionidx].userspace_address;
+ mem->base_address =
+ mem->regions[regionidx].userspace_address;
/* Map VM memory file */
- if (host_memory_map(dev, mem, ctx.pid, mem->base_address) != 0) {
+ if (host_memory_map(dev, mem, ctx.pid,
+ mem->base_address) != 0) {
free(mem);
return -1;
}
@@ -678,27 +722,42 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
return -1;
}
- /* Check if all of our regions have valid mappings. Usually one does not exist in the QEMU memory file. */
+ /*
+ * Check if all of our regions have valid mappings.
+ * Usually one does not exist in the QEMU memory file.
+ */
valid_regions = mem->nregions;
for (regionidx = 0; regionidx < mem->nregions; regionidx++) {
- if ((mem->regions[regionidx].userspace_address < mem->base_address) ||
- (mem->regions[regionidx].userspace_address > (mem->base_address + mem->mapped_size)))
+ if ((mem->regions[regionidx].userspace_address <
+ mem->base_address) ||
+ (mem->regions[regionidx].userspace_address >
+ (mem->base_address + mem->mapped_size)))
valid_regions--;
}
- /* If a region does not have a valid mapping we rebuild our memory struct to contain only valid entries. */
+ /*
+ * If a region does not have a valid mapping,
+ * we rebuild our memory struct to contain only valid entries.
+ */
if (valid_regions != mem->nregions) {
LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") Not all memory regions exist in the QEMU mem file. Re-populating mem structure\n",
dev->device_fh);
- /* Re-populate the memory structure with only valid regions. Invalid regions are over-written with memmove. */
+ /*
+ * Re-populate the memory structure with only valid regions.
+ * Invalid regions are over-written with memmove.
+ */
valid_regions = 0;
for (regionidx = mem->nregions; 0 != regionidx--;) {
- if ((mem->regions[regionidx].userspace_address < mem->base_address) ||
- (mem->regions[regionidx].userspace_address > (mem->base_address + mem->mapped_size))) {
- memmove(&mem->regions[regionidx], &mem->regions[regionidx + 1],
- sizeof(struct virtio_memory_regions) * valid_regions);
+ if ((mem->regions[regionidx].userspace_address <
+ mem->base_address) ||
+ (mem->regions[regionidx].userspace_address >
+ (mem->base_address + mem->mapped_size))) {
+ memmove(&mem->regions[regionidx],
+ &mem->regions[regionidx + 1],
+ sizeof(struct virtio_memory_regions) *
+ valid_regions);
} else {
valid_regions++;
}
@@ -708,12 +767,16 @@ set_mem_table(struct vhost_device_ctx ctx, const void *mem_regions_addr,
dev->mem = mem;
/*
- * Calculate the address offset for each region. This offset is used to identify the vhost virtual address
+ * Calculate the address offset for each region.
+ * This offset is used to identify the vhost virtual address
* corresponding to a QEMU guest physical address.
*/
for (regionidx = 0; regionidx < dev->mem->nregions; regionidx++) {
- dev->mem->regions[regionidx].address_offset = dev->mem->regions[regionidx].userspace_address - dev->mem->base_address
- + dev->mem->mapped_address - dev->mem->regions[regionidx].guest_phys_address;
+ dev->mem->regions[regionidx].address_offset =
+ dev->mem->regions[regionidx].userspace_address -
+ dev->mem->base_address +
+ dev->mem->mapped_address -
+ dev->mem->regions[regionidx].guest_phys_address;
}
return 0;
@@ -732,7 +795,7 @@ set_vring_num(struct vhost_device_ctx ctx, struct vhost_vring_state *state)
if (dev == NULL)
return -1;
- /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* State->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[state->index]->size = state->num;
return 0;
@@ -740,8 +803,8 @@ set_vring_num(struct vhost_device_ctx ctx, struct vhost_vring_state *state)
/*
* Called from CUSE IOCTL: VHOST_SET_VRING_ADDR
- * The virtio device sends us the desc, used and avail ring addresses. This function
- * then converts these to our address space.
+ * The virtio device sends us the desc, used and avail ring addresses.
+ * This function then converts these to our address space.
*/
static int
set_vring_addr(struct vhost_device_ctx ctx, struct vhost_vring_addr *addr)
@@ -753,31 +816,43 @@ set_vring_addr(struct vhost_device_ctx ctx, struct vhost_vring_addr *addr)
if (dev == NULL)
return -1;
- /* addr->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* addr->index refers to the queue index. The txq 1, rxq is 0. */
vq = dev->virtqueue[addr->index];
/* The addresses are converted from QEMU virtual to Vhost virtual. */
- vq->desc = (struct vring_desc *)(uintptr_t)qva_to_vva(dev, addr->desc_user_addr);
+ vq->desc = (struct vring_desc *)(uintptr_t)qva_to_vva(dev,
+ addr->desc_user_addr);
if (vq->desc == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find descriptor ring address.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find desc ring address.\n",
+ dev->device_fh);
return -1;
}
- vq->avail = (struct vring_avail *)(uintptr_t)qva_to_vva(dev, addr->avail_user_addr);
+ vq->avail = (struct vring_avail *)(uintptr_t)qva_to_vva(dev,
+ addr->avail_user_addr);
if (vq->avail == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find available ring address.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find avail ring address.\n",
+ dev->device_fh);
return -1;
}
- vq->used = (struct vring_used *)(uintptr_t)qva_to_vva(dev, addr->used_user_addr);
+ vq->used = (struct vring_used *)(uintptr_t)qva_to_vva(dev,
+ addr->used_user_addr);
if (vq->used == 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") Failed to find used ring address.\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") Failed to find used ring address.\n",
+ dev->device_fh);
return -1;
}
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address desc: %p\n", dev->device_fh, vq->desc);
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address avail: %p\n", dev->device_fh, vq->avail);
- LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address used: %p\n", dev->device_fh, vq->used);
+ LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address desc: %p\n",
+ dev->device_fh, vq->desc);
+ LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address avail: %p\n",
+ dev->device_fh, vq->avail);
+ LOG_DEBUG(VHOST_CONFIG, "(%"PRIu64") mapped address used: %p\n",
+ dev->device_fh, vq->used);
return 0;
}
@@ -795,7 +870,7 @@ set_vring_base(struct vhost_device_ctx ctx, struct vhost_vring_state *state)
if (dev == NULL)
return -1;
- /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* State->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[state->index]->last_used_idx = state->num;
dev->virtqueue[state->index]->last_used_idx_res = state->num;
@@ -817,15 +892,15 @@ get_vring_base(struct vhost_device_ctx ctx, uint32_t index,
return -1;
state->index = index;
- /* State->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* State->index refers to the queue index. The txq is 1, rxq is 0. */
state->num = dev->virtqueue[state->index]->last_used_idx;
return 0;
}
/*
- * This function uses the eventfd_link kernel module to copy an eventfd file descriptor
- * provided by QEMU in to our process space.
+ * This function uses the eventfd_link kernel module to copy an eventfd file
+ * descriptor provided by QEMU in to our process space.
*/
static int
eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
@@ -835,7 +910,9 @@ eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
/* Open the character device to the kernel module. */
eventfd_link = open(eventfd_cdev, O_RDWR);
if (eventfd_link < 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") eventfd_link module is not loaded\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") eventfd_link module is not loaded\n",
+ dev->device_fh);
return -1;
}
@@ -844,18 +921,19 @@ eventfd_copy(struct virtio_net *dev, struct eventfd_copy *eventfd_copy)
close(eventfd_link);
if (ret < 0) {
- RTE_LOG(ERR, VHOST_CONFIG, "(%"PRIu64") EVENTFD_COPY ioctl failed\n", dev->device_fh);
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "(%"PRIu64") EVENTFD_COPY ioctl failed\n",
+ dev->device_fh);
return -1;
}
-
return 0;
}
/*
* Called from CUSE IOCTL: VHOST_SET_VRING_CALL
- * The virtio device sends an eventfd to interrupt the guest. This fd gets copied in
- * to our process space.
+ * The virtio device sends an eventfd to interrupt the guest. This fd gets
+ * copied into our process space.
*/
static int
set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
@@ -868,7 +946,7 @@ set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
if (dev == NULL)
return -1;
- /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* file->index refers to the queue index. The txq is 1, rxq is 0. */
vq = dev->virtqueue[file->index];
if (vq->kickfd)
@@ -888,8 +966,8 @@ set_vring_call(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
/*
* Called from CUSE IOCTL: VHOST_SET_VRING_KICK
- * The virtio device sends an eventfd that it can use to notify us. This fd gets copied in
- * to our process space.
+ * The virtio device sends an eventfd that it can use to notify us.
+ * This fd gets copied into our process space.
*/
static int
set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
@@ -902,7 +980,7 @@ set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
if (dev == NULL)
return -1;
- /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* file->index refers to the queue index. The txq is 1, rxq is 0. */
vq = dev->virtqueue[file->index];
if (vq->callfd)
@@ -922,10 +1000,12 @@ set_vring_kick(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
/*
* Called from CUSE IOCTL: VHOST_NET_SET_BACKEND
- * To complete device initialisation when the virtio driver is loaded we are provided with a
- * valid fd for a tap device (not used by us). If this happens then we can add the device to a
- * data core. When the virtio driver is removed we get fd=-1. At that point we remove the device
- * from the data core. The device will still exist in the device configuration linked list.
+ * To complete device initialisation when the virtio driver is loaded,
+ * we are provided with a valid fd for a tap device (not used by us).
+ * If this happens then we can add the device to a data core.
+ * When the virtio driver is removed we get fd=-1.
+ * At that point we remove the device from the data core.
+ * The device will still exist in the device configuration linked list.
*/
static int
set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
@@ -936,10 +1016,13 @@ set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
if (dev == NULL)
return -1;
- /* file->index refers to the queue index. The TX queue is 1, RX queue is 0. */
+ /* file->index refers to the queue index. The txq is 1, rxq is 0. */
dev->virtqueue[file->index]->backend = file->fd;
- /* If the device isn't already running and both backend fds are set we add the device. */
+ /*
+ * If the device isn't already running and both backend fds are set,
+ * we add the device.
+ */
if (!(dev->flags & VIRTIO_DEV_RUNNING)) {
if (((int)dev->virtqueue[VIRTIO_TXQ]->backend != VIRTIO_DEV_STOPPED) &&
((int)dev->virtqueue[VIRTIO_RXQ]->backend != VIRTIO_DEV_STOPPED))
@@ -952,8 +1035,8 @@ set_backend(struct vhost_device_ctx ctx, struct vhost_vring_file *file)
}
/*
- * Function pointers are set for the device operations to allow CUSE to call functions
- * when an IOCTL, device_add or device_release is received.
+ * Function pointers are set for the device operations to allow CUSE to call
+ * functions when an IOCTL, device_add or device_release is received.
*/
static const struct vhost_net_device_ops vhost_device_ops = {
.new_device = new_device,
@@ -991,11 +1074,13 @@ int rte_vhost_enable_guest_notification(struct virtio_net *dev,
uint16_t queue_id, int enable)
{
if (enable) {
- RTE_LOG(ERR, VHOST_CONFIG, "guest notification isn't supported.\n");
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "guest notification isn't supported.\n");
return -1;
}
- dev->virtqueue[queue_id]->used->flags = enable ? 0 : VRING_USED_F_NO_NOTIFY;
+ dev->virtqueue[queue_id]->used->flags =
+ enable ? 0 : VRING_USED_F_NO_NOTIFY;
return 0;
}
--
1.8.1.4
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2014-11-05 21:57 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-11-05 4:40 [dpdk-dev] [PATCH] lib/librte_vhost: code style fixes Huawei Xie
2014-11-05 4:42 Huawei Xie
2014-11-05 9:09 ` Thomas Monjalon
2014-11-05 17:07 ` Xie, Huawei
2014-11-05 17:03 Huawei Xie
2014-11-05 20:41 ` Thomas Monjalon
2014-11-05 21:21 ` Xie, Huawei
2014-11-05 21:25 ` Thomas Monjalon
2014-11-05 21:55 ` Xie, Huawei
2014-11-05 22:06 ` Thomas Monjalon
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