[dpdk-dev] [PATCH v2] net/virtio-user: fix feature setting with vhost-net backend

[Jiayu Hu]

When the backend is vhost-net, virtio-user must work in client mode and
needs to request features from the backend in virtio_user_dev_init().
But currently, virtio-user is assigned to default features in this case.

This patch is to fix this inappropriate feature setting.

Fixes: bd8f50a45d0f ("net/virtio-user: support server mode")
Signed-off-by: Jiayu Hu <jiayu...@intel.com>
---
changes in v2:
- remove unnecessary indent change.
- change commit log.

 drivers/net/virtio/virtio_user/virtio_user_dev.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c 
b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 38b8bc9..2d80188 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -353,7 +353,7 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char 
*path, int queues,
                return -1;
        }
 
-       if (dev->vhostfd >= 0) {
+       if (!dev->is_server) {
                if (dev->ops->send_request(dev, VHOST_USER_SET_OWNER,
                                           NULL) < 0) {
                        PMD_INIT_LOG(ERR, "set_owner fails: %s",
@@ -367,6 +367,8 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char 
*path, int queues,
                                     strerror(errno));
                        return -1;
                }
+               if (dev->mac_specified)
+                       dev->device_features |= (1ull << VIRTIO_NET_F_MAC);
        } else {
                /* We just pretend vhost-user can support all these features.
                 * Note that this could be problematic that if some feature is
@@ -376,9 +378,6 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char 
*path, int queues,
                dev->device_features = VIRTIO_USER_SUPPORTED_FEATURES;
        }
 
-       if (dev->mac_specified)
-               dev->device_features |= (1ull << VIRTIO_NET_F_MAC);
-
        if (cq) {
                /* device does not really need to know anything about CQ,
                 * so if necessary, we just claim to support CQ
-- 
2.7.4