This patch introduce new callbacks for getting
and setting Vhost-user protocol features.
Signed-off-by: Maxime Coquelin <maxime.coque...@redhat.com>
---
drivers/net/virtio/virtio_user/vhost.h | 2 +
drivers/net/virtio/virtio_user/vhost_user.c | 64 +++++++++++++++++--
.../net/virtio/virtio_user/virtio_user_dev.c | 17 ++---
drivers/net/virtio/virtio_user_ethdev.c | 14 ++--
4 files changed, 69 insertions(+), 28 deletions(-)
diff --git a/drivers/net/virtio/virtio_user/vhost.h
b/drivers/net/virtio/virtio_user/vhost.h
index 16978e27ed..d8c59ab308 100644
--- a/drivers/net/virtio/virtio_user/vhost.h
+++ b/drivers/net/virtio/virtio_user/vhost.h
@@ -104,6 +104,8 @@ struct virtio_user_backend_ops {
int (*set_owner)(struct virtio_user_dev *dev);
int (*get_features)(struct virtio_user_dev *dev, uint64_t *features);
int (*set_features)(struct virtio_user_dev *dev, uint64_t features);
+ int (*get_protocol_features)(struct virtio_user_dev *dev, uint64_t
*features);
+ int (*set_protocol_features)(struct virtio_user_dev *dev, uint64_t
features);
int (*send_request)(struct virtio_user_dev *dev,
enum vhost_user_request req,
void *arg);
diff --git a/drivers/net/virtio/virtio_user/vhost_user.c
b/drivers/net/virtio/virtio_user/vhost_user.c
index d204fa1eb0..5e89b1d72d 100644
--- a/drivers/net/virtio/virtio_user/vhost_user.c
+++ b/drivers/net/virtio/virtio_user/vhost_user.c
@@ -199,6 +199,62 @@ vhost_user_set_features(struct virtio_user_dev *dev,
uint64_t features)
return 0;
}
+static int
+vhost_user_get_protocol_features(struct virtio_user_dev *dev, uint64_t
*features)
+{
+ int ret;
+ struct vhost_user_msg msg = {
+ .request = VHOST_USER_GET_PROTOCOL_FEATURES,
+ .flags = VHOST_USER_VERSION,
+ };
+
+ ret = vhost_user_write(dev->vhostfd, &msg, NULL, 0);
+ if (ret < 0)
+ goto err;
+
+ ret = vhost_user_read(dev->vhostfd, &msg);
+ if (ret < 0)
+ goto err;
+
+ if (msg.request != VHOST_USER_GET_PROTOCOL_FEATURES) {
+ PMD_DRV_LOG(ERR, "Unexpected request type (%d)", msg.request);
+ goto err;
+ }
+
+ if (msg.size != sizeof(*features)) {
+ PMD_DRV_LOG(ERR, "Unexpected payload size (%d)", msg.size);
+ goto err;
+ }
+
+ *features = msg.payload.u64;
+
+ return 0;
+err:
+ PMD_DRV_LOG(ERR, "Failed to get backend protocol features");
+
+ return -1;
+}
+
+static int
+vhost_user_set_protocol_features(struct virtio_user_dev *dev, uint64_t
features)
+{
+ int ret;
+ struct vhost_user_msg msg = {
+ .request = VHOST_USER_SET_PROTOCOL_FEATURES,
+ .flags = VHOST_USER_VERSION,
+ .size = sizeof(features),
+ .payload.u64 = features,
+ };
+
+ ret = vhost_user_write(dev->vhostfd, &msg, NULL, 0);
+ if (ret < 0) {
+ PMD_DRV_LOG(ERR, "Failed to set protocol features");
+ return -1;
+ }
+
+ return 0;
+}
+
struct walk_arg {
struct vhost_memory *vm;
int *fds;
@@ -313,8 +369,6 @@ const char * const vhost_msg_strings[] = {
[VHOST_USER_SET_VRING_KICK] = "VHOST_SET_VRING_KICK",
[VHOST_USER_SET_MEM_TABLE] = "VHOST_SET_MEM_TABLE",
[VHOST_USER_SET_VRING_ENABLE] = "VHOST_SET_VRING_ENABLE",
- [VHOST_USER_GET_PROTOCOL_FEATURES] = "VHOST_USER_GET_PROTOCOL_FEATURES",
- [VHOST_USER_SET_PROTOCOL_FEATURES] = "VHOST_USER_SET_PROTOCOL_FEATURES",
[VHOST_USER_SET_STATUS] = "VHOST_SET_STATUS",
[VHOST_USER_GET_STATUS] = "VHOST_GET_STATUS",
};
@@ -352,8 +406,6 @@ vhost_user_sock(struct virtio_user_dev *dev,
(!(dev->protocol_features &
(1ULL << VHOST_USER_PROTOCOL_F_STATUS))))
return -ENOTSUP;
- /* Fallthrough */
- case VHOST_USER_GET_PROTOCOL_FEATURES:
need_reply = 1;
break;
@@ -366,7 +418,6 @@ vhost_user_sock(struct virtio_user_dev *dev,
if (has_reply_ack)
msg.flags |= VHOST_USER_NEED_REPLY_MASK;
/* Fallthrough */
- case VHOST_USER_SET_PROTOCOL_FEATURES:
case VHOST_USER_SET_LOG_BASE:
msg.payload.u64 = *((__u64 *)arg);
msg.size = sizeof(m.payload.u64);
@@ -446,7 +497,6 @@ vhost_user_sock(struct virtio_user_dev *dev,
switch (req) {
case VHOST_USER_GET_STATUS:
- case VHOST_USER_GET_PROTOCOL_FEATURES:
if (msg.size != sizeof(m.payload.u64)) {
PMD_DRV_LOG(ERR, "Received bad msg size");
return -1;
@@ -584,6 +634,8 @@ struct virtio_user_backend_ops virtio_ops_user = {
.set_owner = vhost_user_set_owner,
.get_features = vhost_user_get_features,
.set_features = vhost_user_set_features,
+ .get_protocol_features = vhost_user_get_protocol_features,
+ .set_protocol_features = vhost_user_set_protocol_features,
.send_request = vhost_user_sock,
.enable_qp = vhost_user_enable_queue_pair
};
diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c
b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 0a85d058a8..6bb61b3e89 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -495,24 +495,17 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char
*path, int queues,
}
- if (dev->device_features &
- (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)) {
- if (dev->ops->send_request(dev,
- VHOST_USER_GET_PROTOCOL_FEATURES,
- &protocol_features))
+ if (dev->device_features & (1ULL <<
VHOST_USER_F_PROTOCOL_FEATURES)) {
+ if (dev->ops->get_protocol_features(dev,
&protocol_features))
return -1;
dev->protocol_features &= protocol_features;
- if (dev->ops->send_request(dev,
- VHOST_USER_SET_PROTOCOL_FEATURES,
- &dev->protocol_features))
+ if (dev->ops->set_protocol_features(dev,
dev->protocol_features))
return -1;
- if (!(dev->protocol_features &
- (1ULL << VHOST_USER_PROTOCOL_F_MQ)))
- dev->unsupported_features |=
- (1ull << VIRTIO_NET_F_MQ);
+ if (!(dev->protocol_features & (1ULL <<
VHOST_USER_PROTOCOL_F_MQ)))
+ dev->unsupported_features |= (1ull <<
VIRTIO_NET_F_MQ);
}
} else {
/* We just pretend vhost-user can support all these features.
diff --git a/drivers/net/virtio/virtio_user_ethdev.c
b/drivers/net/virtio/virtio_user_ethdev.c
index 4d2635c8aa..c63d010e16 100644
--- a/drivers/net/virtio/virtio_user_ethdev.c
+++ b/drivers/net/virtio/virtio_user_ethdev.c
@@ -93,23 +93,17 @@ virtio_user_server_reconnect(struct virtio_user_dev *dev)
if (dev->device_features &
(1ULL << VHOST_USER_F_PROTOCOL_FEATURES)) {
- if (dev->ops->send_request(dev,
- VHOST_USER_GET_PROTOCOL_FEATURES,
- &protocol_features))
+ if (dev->ops->get_protocol_features(dev, &protocol_features))
return -1;
/* Offer VHOST_USER_PROTOCOL_F_STATUS */
- dev->protocol_features |=
- (1ULL << VHOST_USER_PROTOCOL_F_STATUS);
+ dev->protocol_features |= (1ULL <<
VHOST_USER_PROTOCOL_F_STATUS);
dev->protocol_features &= protocol_features;
- if (dev->ops->send_request(dev,
- VHOST_USER_SET_PROTOCOL_FEATURES,
- &dev->protocol_features))
+ if (dev->ops->set_protocol_features(dev,
dev->protocol_features))
return -1;
- if (!(dev->protocol_features &
- (1ULL << VHOST_USER_PROTOCOL_F_MQ)))
+ if (!(dev->protocol_features & (1ULL <<
VHOST_USER_PROTOCOL_F_MQ)))
dev->unsupported_features |= (1ull << VIRTIO_NET_F_MQ);
}
--
2.29.2
