[PATCH v2 net-next 3/3] vhost/net: enable outer nw header offset support
From: Kommula Shiva Shankar <hidden>
Date: 2025-10-08 11:00:34
Also in:
virtualization
Subsystem:
the rest, virtio host (vhost) · Maintainers:
Linus Torvalds, "Michael S. Tsirkin", Jason Wang
apprise vhost net about the virtio net header size. Signed-off-by: Kommula Shiva Shankar <redacted> --- drivers/vhost/net.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 35ded4330431..8d055405746d 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c@@ -78,6 +78,7 @@ static const u64 vhost_net_features[VIRTIO_FEATURES_DWORDS] = { (1ULL << VIRTIO_F_IN_ORDER), VIRTIO_BIT(VIRTIO_NET_F_GUEST_UDP_TUNNEL_GSO) | VIRTIO_BIT(VIRTIO_NET_F_HOST_UDP_TUNNEL_GSO), + VIRTIO_BIT(VIRTIO_NET_F_OUT_NET_HEADER), }; enum {
@@ -1655,6 +1656,9 @@ 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_OUT_NET_HEADER)) + hdr_len = sizeof(struct virtio_net_hdr_v1_hash_tunnel_out_net_hdr); if (virtio_features_test_bit(features, VIRTIO_NET_F_HOST_UDP_TUNNEL_GSO) || virtio_features_test_bit(features,
--
2.48.1