diff options
| author | Maxime Coquelin <maxime.coquelin@redhat.com> | 2016-12-10 16:30:37 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2017-01-10 07:02:53 +0200 |
| commit | 45a368ad4f6135f32be5c051823a060eada0ac12 (patch) | |
| tree | 4264d030bc17d419087a327c8195ae62059eabab | |
| parent | c5f048d8fb69ae9b52a02ff4435b403b2ba19db7 (diff) | |
vhost-net: Notify the backend about the host MTU
This patch provides a way for virtio-net to notify the
backend about the host MTU set by the user.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Aaron Conole <aconole@redhat.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | hw/net/vhost_net.c | 18 | ||||
| -rw-r--r-- | include/net/vhost_net.h | 2 |
2 files changed, 20 insertions, 0 deletions
diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index f2d49ad7e7..6280422d02 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -51,6 +51,7 @@ static const int kernel_feature_bits[] = { VIRTIO_RING_F_EVENT_IDX, VIRTIO_NET_F_MRG_RXBUF, VIRTIO_F_VERSION_1, + VIRTIO_NET_F_MTU, VHOST_INVALID_FEATURE_BIT }; @@ -74,6 +75,7 @@ static const int user_feature_bits[] = { VIRTIO_NET_F_HOST_ECN, VIRTIO_NET_F_HOST_UFO, VIRTIO_NET_F_MRG_RXBUF, + VIRTIO_NET_F_MTU, /* This bit implies RARP isn't sent by QEMU out of band */ VIRTIO_NET_F_GUEST_ANNOUNCE, @@ -435,6 +437,17 @@ int vhost_set_vring_enable(NetClientState *nc, int enable) return 0; } +int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu) +{ + const VhostOps *vhost_ops = net->dev.vhost_ops; + + if (!vhost_ops->vhost_net_set_mtu) { + return 0; + } + + return vhost_ops->vhost_net_set_mtu(&net->dev, mtu); +} + #else uint64_t vhost_net_get_max_queues(VHostNetState *net) { @@ -501,4 +514,9 @@ int vhost_set_vring_enable(NetClientState *nc, int enable) { return 0; } + +int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu) +{ + return 0; +} #endif diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h index 5a08efffef..afc1499eb9 100644 --- a/include/net/vhost_net.h +++ b/include/net/vhost_net.h @@ -35,4 +35,6 @@ int vhost_set_vring_enable(NetClientState * nc, int enable); uint64_t vhost_net_get_acked_features(VHostNetState *net); +int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu); + #endif |