[dpdk-dev] [PATCH] net/virtio-user: fix multiple queues fail in server mode
zhiyong.yang at intel.com
zhiyong.yang at intel.com
Wed May 9 11:49:36 CEST 2018
This patch fixes multiple queues failure when virtio-user works in
server mode.
Fixes: bd8f50a45d0f ("net/virtio-user: support server mode")
Cc: stable at dpdk.org
Signed-off-by: Zhiyong Yang <zhiyong.yang at intel.com>
---
drivers/net/virtio/virtio_user/vhost_user.c | 3 +++
drivers/net/virtio/virtio_user/virtio_user_dev.c | 9 +++++++++
2 files changed, 12 insertions(+)
diff --git a/drivers/net/virtio/virtio_user/vhost_user.c b/drivers/net/virtio/virtio_user/vhost_user.c
index a6df97a00..a9e53d7b5 100644
--- a/drivers/net/virtio/virtio_user/vhost_user.c
+++ b/drivers/net/virtio/virtio_user/vhost_user.c
@@ -263,6 +263,9 @@ vhost_user_sock(struct virtio_user_dev *dev,
PMD_DRV_LOG(INFO, "%s", vhost_msg_strings[req]);
+ if (vhostfd < 0)
+ return -1;
+
msg.request = req;
msg.flags = VHOST_USER_VERSION;
msg.size = 0;
diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 38b8bc90d..e988dc3f4 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -126,6 +126,10 @@ virtio_user_start_device(struct virtio_user_dev *dev)
features &= ~(1ull << VIRTIO_NET_F_MAC);
/* Strip VIRTIO_NET_F_CTRL_VQ, as devices do not really need to know */
features &= ~(1ull << VIRTIO_NET_F_CTRL_VQ);
+ /* Also disable features which depend on VIRTIO_NET_F_CTRL_VQ */
+ features &= ~(1ull << VIRTIO_NET_F_CTRL_RX);
+ features &= ~(1ull << VIRTIO_NET_F_CTRL_VLAN);
+ features &= ~(1ull << VIRTIO_NET_F_CTRL_MAC_ADDR);
features &= ~(1ull << VIRTIO_NET_F_STATUS);
ret = dev->ops->send_request(dev, VHOST_USER_SET_FEATURES, &features);
if (ret < 0)
@@ -488,6 +492,11 @@ virtio_user_handle_ctrl_msg(struct virtio_user_dev *dev, struct vring *vring,
queues = *(uint16_t *)(uintptr_t)vring->desc[idx_data].addr;
status = virtio_user_handle_mq(dev, queues);
}
+ /* Server mode can't enable queue pairs if vhostfd is not connected,
+ * we suppose that status always returns 0 in this case.
+ * /
+ if (dev->is_server && dev->vhostfd < 0)
+ status = 0;
/* Update status */
*(virtio_net_ctrl_ack *)(uintptr_t)vring->desc[idx_status].addr = status;
--
2.14.3
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