mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2025-12-27 13:30:45 -05:00
Code Issues Packages Projects Releases Wiki Activity

vhost/net: enable gso over UDP tunnel support.

Browse Source 
Vhost net need to know the exact virtio net hdr size to be able
to copy such header correctly. Teach it about the newly defined
UDP tunnel-related option and update the hdr size computation
accordingly.

Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Paolo Abeni
2025-07-08 18:04:28 +02:00
parent 288f304351
commit bbca931fce
1 changed files with 8 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/vhost/net.c
View File

@@ -75,6 +75,8 @@ static const u64 vhost_net_features[VIRTIO_FEATURES_DWORDS] = {
(1ULL << VIRTIO_NET_F_MRG_RXBUF) |
(1ULL << VIRTIO_F_ACCESS_PLATFORM) |
(1ULL << VIRTIO_F_RING_RESET),
VIRTIO_BIT(VIRTIO_NET_F_GUEST_UDP_TUNNEL_GSO) |
VIRTIO_BIT(VIRTIO_NET_F_HOST_UDP_TUNNEL_GSO),
};
enum {
@@ -1624,6 +1626,12 @@ static int vhost_net_set_features(struct vhost_net *n, const u64 *features)
sizeof(struct virtio_net_hdr_mrg_rxbuf) :
sizeof(struct virtio_net_hdr);
if (virtio_features_test_bit(features,
VIRTIO_NET_F_HOST_UDP_TUNNEL_GSO) ||
virtio_features_test_bit(features,
VIRTIO_NET_F_GUEST_UDP_TUNNEL_GSO))
hdr_len = sizeof(struct virtio_net_hdr_v1_hash_tunnel);
if (virtio_features_test_bit(features, VHOST_NET_F_VIRTIO_NET_HDR)) {
/* vhost provides vnet_hdr */
vhost_hlen = hdr_len;