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From: Shreyansh Jain <shreyansh.jain@nxp.com>
To: <dev@dpdk.org>
CC: <viktorin@rehivetech.com>, David Marchand <david.marchand@6wind.com>,
<hemant.agrawal@nxp.com>, Thomas Monjalon <thomas.monjalon@6wind.com>,
Shreyansh Jain <shreyansh.jain@nxp.com>
Date: Fri, 16 Sep 2016 09:59:51 +0530
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Subject: [dpdk-dev] [PATCH v10 16/25] eal: extract vdev infra
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From: Jan Viktorin <viktorin@rehivetech.com>
Move all PMD_VDEV-specific code into a separate module and header
file to not polute the generic code anymore. There is now a list
of virtual devices available.
The rte_vdev_driver integrates the original rte_driver inside
(C inheritance). The rte_driver will be however change in the
future to serve as a common base for all other types of drivers.
The existing PMDs (PMD_VDEV) are to be modified later (there is
no change for them at the moment).
Unlike DRIVER_REGISTER_PCI, DRIVER_EXPORT_NAME is not being called on vdev
registration.
Signed-off-by: Jan Viktorin <viktorin@rehivetech.com>
Signed-off-by: Shreyansh Jain <shreyansh.jain@nxp.com>
---
Changes since v9:
- Add DRIVER_EXPORT_NAME() to DRIVER_REGISTER_* macro.
Patch for change from David Marchand <david.marchand@6wind.com>
---
lib/librte_eal/bsdapp/eal/Makefile | 1 +
lib/librte_eal/bsdapp/eal/rte_eal_version.map | 3 +
lib/librte_eal/common/Makefile | 2 +-
lib/librte_eal/common/eal_common_dev.c | 54 +-----------
lib/librte_eal/common/eal_common_vdev.c | 112 ++++++++++++++++++++++++
lib/librte_eal/common/include/rte_vdev.h | 85 ++++++++++++++++++
lib/librte_eal/linuxapp/eal/Makefile | 1 +
lib/librte_eal/linuxapp/eal/rte_eal_version.map | 3 +
8 files changed, 207 insertions(+), 54 deletions(-)
create mode 100644 lib/librte_eal/common/eal_common_vdev.c
create mode 100644 lib/librte_eal/common/include/rte_vdev.h
diff --git a/lib/librte_eal/bsdapp/eal/Makefile b/lib/librte_eal/bsdapp/eal/Makefile
index 7a0fea5..5a3fc1d 100644
--- a/lib/librte_eal/bsdapp/eal/Makefile
+++ b/lib/librte_eal/bsdapp/eal/Makefile
@@ -69,6 +69,7 @@ SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_timer.c
SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_memzone.c
SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_log.c
SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_launch.c
+SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_vdev.c
SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_pci.c
SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_pci_uio.c
SRCS-$(CONFIG_RTE_EXEC_ENV_BSDAPP) += eal_common_memory.c
diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
index 7b3d409..ec61017 100644
--- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map
@@ -168,4 +168,7 @@ DPDK_16.11 {
rte_eal_dev_attach;
rte_eal_dev_detach;
+ rte_eal_vdrv_register;
+ rte_eal_vdrv_unregister;
+
} DPDK_16.07;
diff --git a/lib/librte_eal/common/Makefile b/lib/librte_eal/common/Makefile
index bb9810d..dfd64aa 100644
--- a/lib/librte_eal/common/Makefile
+++ b/lib/librte_eal/common/Makefile
@@ -38,7 +38,7 @@ INC += rte_per_lcore.h rte_random.h
INC += rte_tailq.h rte_interrupts.h rte_alarm.h
INC += rte_string_fns.h rte_version.h
INC += rte_eal_memconfig.h rte_malloc_heap.h
-INC += rte_hexdump.h rte_devargs.h rte_dev.h
+INC += rte_hexdump.h rte_devargs.h rte_dev.h rte_vdev.h
INC += rte_pci_dev_feature_defs.h rte_pci_dev_features.h
INC += rte_malloc.h rte_keepalive.h rte_time.h
diff --git a/lib/librte_eal/common/eal_common_dev.c b/lib/librte_eal/common/eal_common_dev.c
index 88f9d3f..555e0d9 100644
--- a/lib/librte_eal/common/eal_common_dev.c
+++ b/lib/librte_eal/common/eal_common_dev.c
@@ -64,32 +64,6 @@ rte_eal_driver_unregister(struct rte_driver *driver)
}
int
-rte_eal_vdev_init(const char *name, const char *args)
-{
- struct rte_driver *driver;
-
- if (name == NULL)
- return -EINVAL;
-
- TAILQ_FOREACH(driver, &dev_driver_list, next) {
- if (driver->type != PMD_VDEV)
- continue;
-
- /*
- * search a driver prefix in virtual device name.
- * For example, if the driver is pcap PMD, driver->name
- * will be "eth_pcap", but "name" will be "eth_pcapN".
- * So use strncmp to compare.
- */
- if (!strncmp(driver->name, name, strlen(driver->name)))
- return driver->init(name, args);
- }
-
- RTE_LOG(ERR, EAL, "no driver found for %s\n", name);
- return -EINVAL;
-}
-
-int
rte_eal_dev_init(void)
{
struct rte_devargs *devargs;
@@ -98,7 +72,7 @@ rte_eal_dev_init(void)
/*
* Note that the dev_driver_list is populated here
* from calls made to rte_eal_driver_register from constructor functions
- * embedded into PMD modules via the PMD_REGISTER_DRIVER macro
+ * embedded into PMD modules via the DRIVER_REGISTER_VDEV macro
*/
/* call the init function for each virtual device */
@@ -125,32 +99,6 @@ rte_eal_dev_init(void)
return 0;
}
-int
-rte_eal_vdev_uninit(const char *name)
-{
- struct rte_driver *driver;
-
- if (name == NULL)
- return -EINVAL;
-
- TAILQ_FOREACH(driver, &dev_driver_list, next) {
- if (driver->type != PMD_VDEV)
- continue;
-
- /*
- * search a driver prefix in virtual device name.
- * For example, if the driver is pcap PMD, driver->name
- * will be "eth_pcap", but "name" will be "eth_pcapN".
- * So use strncmp to compare.
- */
- if (!strncmp(driver->name, name, strlen(driver->name)))
- return driver->uninit(name);
- }
-
- RTE_LOG(ERR, EAL, "no driver found for %s\n", name);
- return -EINVAL;
-}
-
int rte_eal_dev_attach(const char *name, const char *devargs)
{
struct rte_pci_addr addr;
diff --git a/lib/librte_eal/common/eal_common_vdev.c b/lib/librte_eal/common/eal_common_vdev.c
new file mode 100644
index 0000000..462517f
--- /dev/null
+++ b/lib/librte_eal/common/eal_common_vdev.c
@@ -0,0 +1,112 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016 RehiveTech. 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 RehiveTech 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.
+ */
+
+#include <string.h>
+#include <inttypes.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <sys/queue.h>
+
+#include <rte_vdev.h>
+#include <rte_common.h>
+
+struct vdev_driver_list vdev_driver_list =
+ TAILQ_HEAD_INITIALIZER(vdev_driver_list);
+
+/* register a driver */
+void
+rte_eal_vdrv_register(struct rte_vdev_driver *driver)
+{
+ TAILQ_INSERT_TAIL(&vdev_driver_list, driver, next);
+}
+
+/* unregister a driver */
+void
+rte_eal_vdrv_unregister(struct rte_vdev_driver *driver)
+{
+ TAILQ_REMOVE(&vdev_driver_list, driver, next);
+}
+
+int
+rte_eal_vdev_init(const char *name, const char *args)
+{
+ struct rte_vdev_driver *driver;
+
+ if (name == NULL)
+ return -EINVAL;
+
+ TAILQ_FOREACH(driver, &vdev_driver_list, next) {
+ if (driver->driver.type != PMD_VDEV)
+ continue;
+
+ /*
+ * search a driver prefix in virtual device name.
+ * For example, if the driver is pcap PMD, driver->name
+ * will be "eth_pcap", but "name" will be "eth_pcapN".
+ * So use strncmp to compare.
+ */
+ if (!strncmp(driver->driver.name, name,
+ strlen(driver->driver.name)))
+ return driver->driver.init(name, args);
+ }
+
+ RTE_LOG(ERR, EAL, "no driver found for %s\n", name);
+ return -EINVAL;
+}
+
+int
+rte_eal_vdev_uninit(const char *name)
+{
+ struct rte_vdev_driver *driver;
+
+ if (name == NULL)
+ return -EINVAL;
+
+ TAILQ_FOREACH(driver, &vdev_driver_list, next) {
+ if (driver->driver.type != PMD_VDEV)
+ continue;
+
+ /*
+ * search a driver prefix in virtual device name.
+ * For example, if the driver is pcap PMD, driver->name
+ * will be "eth_pcap", but "name" will be "eth_pcapN".
+ * So use strncmp to compare.
+ */
+ if (!strncmp(driver->driver.name, name,
+ strlen(driver->driver.name)))
+ return driver->driver.uninit(name);
+ }
+
+ RTE_LOG(ERR, EAL, "no driver found for %s\n", name);
+ return -EINVAL;
+}
diff --git a/lib/librte_eal/common/include/rte_vdev.h b/lib/librte_eal/common/include/rte_vdev.h
new file mode 100644
index 0000000..9c5cc54
--- /dev/null
+++ b/lib/librte_eal/common/include/rte_vdev.h
@@ -0,0 +1,85 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016 RehiveTech. 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 RehiveTech 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 RTE_VDEV_H
+#define RTE_VDEV_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <sys/queue.h>
+#include <rte_dev.h>
+
+/** Double linked list of virtual device drivers. */
+TAILQ_HEAD(vdev_driver_list, rte_vdev_driver);
+
+/**
+ * A virtual device driver abstraction.
+ */
+struct rte_vdev_driver {
+ TAILQ_ENTRY(rte_vdev_driver) next; /**< Next in list. */
+ struct rte_driver driver; /**< Inherited general driver. */
+};
+
+/**
+ * Register a virtual device driver.
+ *
+ * @param driver
+ * A pointer to a rte_vdev_driver structure describing the driver
+ * to be registered.
+ */
+void rte_eal_vdrv_register(struct rte_vdev_driver *driver);
+
+/**
+ * Unregister a virtual device driver.
+ *
+ * @param driver
+ * A pointer to a rte_vdev_driver structure describing the driver
+ * to be unregistered.
+ */
+void rte_eal_vdrv_unregister(struct rte_vdev_driver *driver);
+
+#define DRIVER_REGISTER_VDEV(nm, vdrv)\
+RTE_INIT(vdrvinitfn_ ##vdrv);\
+static void vdrvinitfn_ ##vdrv(void)\
+{\
+ (vdrv).driver.name = RTE_STR(nm);\
+ rte_eal_vdrv_register(&vdrv);\
+} \
+DRIVER_EXPORT_NAME(nm, __COUNTER__)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/lib/librte_eal/linuxapp/eal/Makefile b/lib/librte_eal/linuxapp/eal/Makefile
index 193957f..4e206f0 100644
--- a/lib/librte_eal/linuxapp/eal/Makefile
+++ b/lib/librte_eal/linuxapp/eal/Makefile
@@ -77,6 +77,7 @@ SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_timer.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_memzone.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_log.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_launch.c
+SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_vdev.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_pci.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_pci_uio.c
SRCS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += eal_common_memory.c
diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
index c0bd391..b8bfd4b 100644
--- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map
+++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map
@@ -172,4 +172,7 @@ DPDK_16.11 {
rte_eal_dev_attach;
rte_eal_dev_detach;
+ rte_eal_vdrv_register;
+ rte_eal_vdrv_unregister;
+
} DPDK_16.07;
--
2.7.4