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From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: dev@dpdk.org, chenbo.xia@intel.com, olivier.matz@6wind.com,
amorenoz@redhat.com, david.marchand@redhat.com
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Date: Sun, 20 Dec 2020 22:13:55 +0100
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Subject: [dpdk-dev] [PATCH 30/40] net/virtio: add Virtio-user vring address
ops
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This patch introduces a new callback for setting
vrings addresses.
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
drivers/net/virtio/virtio_user/vhost.h | 1 +
drivers/net/virtio/virtio_user/vhost_kernel.c | 32 +++++++++++++------
drivers/net/virtio/virtio_user/vhost_user.c | 29 +++++++++++++----
drivers/net/virtio/virtio_user/vhost_vdpa.c | 8 ++++-
.../net/virtio/virtio_user/virtio_user_dev.c | 2 +-
5 files changed, 55 insertions(+), 17 deletions(-)
diff --git a/drivers/net/virtio/virtio_user/vhost.h b/drivers/net/virtio/virtio_user/vhost.h
index b296ee215d..956eb58728 100644
--- a/drivers/net/virtio/virtio_user/vhost.h
+++ b/drivers/net/virtio/virtio_user/vhost.h
@@ -113,6 +113,7 @@ struct virtio_user_backend_ops {
int (*get_vring_base)(struct virtio_user_dev *dev, struct vhost_vring_state *state);
int (*set_vring_call)(struct virtio_user_dev *dev, struct vhost_vring_file *file);
int (*set_vring_kick)(struct virtio_user_dev *dev, struct vhost_vring_file *file);
+ int (*set_vring_addr)(struct virtio_user_dev *dev, struct vhost_vring_addr *addr);
int (*send_request)(struct virtio_user_dev *dev,
enum vhost_user_request req,
void *arg);
diff --git a/drivers/net/virtio/virtio_user/vhost_kernel.c b/drivers/net/virtio/virtio_user/vhost_kernel.c
index 1805aee7f7..8cd86b72c6 100644
--- a/drivers/net/virtio/virtio_user/vhost_kernel.c
+++ b/drivers/net/virtio/virtio_user/vhost_kernel.c
@@ -294,9 +294,30 @@ vhost_kernel_set_vring_call(struct virtio_user_dev *dev, struct vhost_vring_file
return vhost_kernel_set_vring_file(dev, VHOST_SET_VRING_KICK, file);
}
+static int
+vhost_kernel_set_vring_addr(struct virtio_user_dev *dev, struct vhost_vring_addr *addr)
+{
+ int ret, fd;
+ uint32_t index = addr->index;
+
+ /* Convert from queue index to queue-pair & offset */
+ fd = dev->vhostfds[addr->index / 2];
+ addr->index %= 2;
+
+ ret = vhost_kernel_ioctl(fd, VHOST_SET_VRING_ADDR, addr);
+ if (ret < 0) {
+ PMD_DRV_LOG(ERR, "Failed to set vring address");
+ return -1;
+ }
+
+ /* restore index back to queue index */
+ addr->index = index;
+
+ return 0;
+}
+
static uint64_t vhost_req_user_to_kernel[] = {
[VHOST_USER_RESET_OWNER] = VHOST_RESET_OWNER,
- [VHOST_USER_SET_VRING_ADDR] = VHOST_SET_VRING_ADDR,
};
static int
@@ -308,20 +329,12 @@ vhost_kernel_send_request(struct virtio_user_dev *dev,
unsigned int i;
uint64_t req_kernel;
int vhostfd;
- unsigned int queue_sel;
PMD_DRV_LOG(INFO, "%s", vhost_msg_strings[req]);
req_kernel = vhost_req_user_to_kernel[req];
switch (req_kernel) {
- case VHOST_SET_VRING_ADDR:
- queue_sel = *(unsigned int *)arg;
- vhostfd = dev->vhostfds[queue_sel / 2];
- *(unsigned int *)arg = queue_sel % 2;
- PMD_DRV_LOG(DEBUG, "vhostfd=%d, index=%u",
- vhostfd, *(unsigned int *)arg);
- break;
default:
vhostfd = -1;
}
@@ -473,6 +486,7 @@ struct virtio_user_backend_ops virtio_ops_kernel = {
.get_vring_base = vhost_kernel_get_vring_base,
.set_vring_call = vhost_kernel_set_vring_call,
.set_vring_kick = vhost_kernel_set_vring_kick,
+ .set_vring_addr = vhost_kernel_set_vring_addr,
.send_request = vhost_kernel_send_request,
.enable_qp = vhost_kernel_enable_queue_pair
};
diff --git a/drivers/net/virtio/virtio_user/vhost_user.c b/drivers/net/virtio/virtio_user/vhost_user.c
index 509a96dfbc..59cf366683 100644
--- a/drivers/net/virtio/virtio_user/vhost_user.c
+++ b/drivers/net/virtio/virtio_user/vhost_user.c
@@ -523,11 +523,32 @@ vhost_user_set_vring_kick(struct virtio_user_dev *dev, struct vhost_vring_file *
return vhost_user_set_vring_file(dev, VHOST_USER_SET_VRING_KICK, file);
}
+
+static int
+vhost_user_set_vring_addr(struct virtio_user_dev *dev, struct vhost_vring_addr *addr)
+{
+ int ret;
+ struct vhost_user_msg msg = {
+ .request = VHOST_USER_SET_VRING_ADDR,
+ .flags = VHOST_USER_VERSION,
+ .size = sizeof(*addr),
+ .payload.addr = *addr,
+ };
+
+ ret = vhost_user_write(dev->vhostfd, &msg, NULL, 0);
+ if (ret < 0) {
+ PMD_DRV_LOG(ERR, "Failed to send vring addresses");
+ return -1;
+ }
+
+ return 0;
+}
+
+
static struct vhost_user_msg m;
const char * const vhost_msg_strings[] = {
[VHOST_USER_RESET_OWNER] = "VHOST_RESET_OWNER",
- [VHOST_USER_SET_VRING_ADDR] = "VHOST_SET_VRING_ADDR",
[VHOST_USER_SET_STATUS] = "VHOST_SET_STATUS",
[VHOST_USER_GET_STATUS] = "VHOST_GET_STATUS",
};
@@ -589,11 +610,6 @@ vhost_user_sock(struct virtio_user_dev *dev,
fds[fd_num++] = *((int *)arg);
break;
- case VHOST_USER_SET_VRING_ADDR:
- memcpy(&msg.payload.addr, arg, sizeof(msg.payload.addr));
- msg.size = sizeof(m.payload.addr);
- break;
-
case VHOST_USER_SET_VRING_ERR:
file = arg;
msg.payload.u64 = file->index & VHOST_USER_VRING_IDX_MASK;
@@ -767,6 +783,7 @@ struct virtio_user_backend_ops virtio_ops_user = {
.get_vring_base = vhost_user_get_vring_base,
.set_vring_call = vhost_user_set_vring_call,
.set_vring_kick = vhost_user_set_vring_kick,
+ .set_vring_addr = vhost_user_set_vring_addr,
.send_request = vhost_user_sock,
.enable_qp = vhost_user_enable_queue_pair
};
diff --git a/drivers/net/virtio/virtio_user/vhost_vdpa.c b/drivers/net/virtio/virtio_user/vhost_vdpa.c
index 48fe3f23e8..e09e7c9fb8 100644
--- a/drivers/net/virtio/virtio_user/vhost_vdpa.c
+++ b/drivers/net/virtio/virtio_user/vhost_vdpa.c
@@ -36,7 +36,6 @@
static uint64_t vhost_req_user_to_vdpa[] = {
[VHOST_USER_RESET_OWNER] = VHOST_RESET_OWNER,
- [VHOST_USER_SET_VRING_ADDR] = VHOST_SET_VRING_ADDR,
[VHOST_USER_SET_STATUS] = VHOST_VDPA_SET_STATUS,
[VHOST_USER_GET_STATUS] = VHOST_VDPA_GET_STATUS,
};
@@ -248,6 +247,12 @@ vhost_vdpa_set_vring_kick(struct virtio_user_dev *dev, struct vhost_vring_file *
return vhost_vdpa_ioctl(dev->vhostfd, VHOST_SET_VRING_KICK, file);
}
+static int
+vhost_vdpa_set_vring_addr(struct virtio_user_dev *dev, struct vhost_vring_addr *addr)
+{
+ return vhost_vdpa_ioctl(dev->vhostfd, VHOST_SET_VRING_ADDR, addr);
+}
+
/* with below features, vhost vdpa does not need to do the checksum and TSO,
* these info will be passed to virtio_user through virtio net header.
*/
@@ -357,6 +362,7 @@ struct virtio_user_backend_ops virtio_ops_vdpa = {
.get_vring_base = vhost_vdpa_get_vring_base,
.set_vring_call = vhost_vdpa_set_vring_call,
.set_vring_kick = vhost_vdpa_set_vring_kick,
+ .set_vring_addr = vhost_vdpa_set_vring_addr,
.send_request = vhost_vdpa_send_request,
.enable_qp = vhost_vdpa_enable_queue_pair,
.dma_map = vhost_vdpa_dma_map,
diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index e4975838ea..48ca7a2548 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -81,7 +81,7 @@ virtio_user_kick_queue(struct virtio_user_dev *dev, uint32_t queue_sel)
state.num |= (1 << 15);
dev->ops->set_vring_base(dev, &state);
- dev->ops->send_request(dev, VHOST_USER_SET_VRING_ADDR, &addr);
+ dev->ops->set_vring_addr(dev, &addr);
/* Of all per virtqueue MSGs, make sure VHOST_USER_SET_VRING_KICK comes
* lastly because vhost depends on this msg to judge if
--
2.29.2