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authorRusty Russell <rusty@rustcorp.com.au>2008-05-02 22:50:46 -0400
committerRusty Russell <rusty@rustcorp.com.au>2008-05-02 07:50:47 -0400
commit5539ae9613587e4a4eec42d420b8bdd9ff552a65 (patch)
tree39db7c012bed1b364069c0b9b2bdd5ece87210b1 /drivers/net/virtio_net.c
parent99ffc696d10b28580fe93441d627cf290ac4484c (diff)
virtio: finer-grained features for virtio_net
So, we previously had a 'VIRTIO_NET_F_GSO' bit which meant that 'the host can handle csum offload, and any TSO (v4&v6 incl ECN) or UFO packets you might want to send. I thought this was good enough for Linux, but it actually isn't, since we don't do UFO in software. So, add separate feature bits for what the host can handle. Add equivalent ones for the guest to say what it can handle, because LRO is coming too (thanks Herbert!). Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/net/virtio_net.c')
-rw-r--r--drivers/net/virtio_net.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index e44116452b7b..ad43421ab6f1 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -385,6 +385,15 @@ static int virtnet_probe(struct virtio_device *vdev)
385 dev->features |= NETIF_F_TSO | NETIF_F_UFO 385 dev->features |= NETIF_F_TSO | NETIF_F_UFO
386 | NETIF_F_TSO_ECN | NETIF_F_TSO6; 386 | NETIF_F_TSO_ECN | NETIF_F_TSO6;
387 } 387 }
388 /* Individual feature bits: what can host handle? */
389 if (gso && vdev->config->feature(vdev, VIRTIO_NET_F_HOST_TSO4))
390 dev->features |= NETIF_F_TSO;
391 if (gso && vdev->config->feature(vdev, VIRTIO_NET_F_HOST_TSO6))
392 dev->features |= NETIF_F_TSO6;
393 if (gso && vdev->config->feature(vdev, VIRTIO_NET_F_HOST_ECN))
394 dev->features |= NETIF_F_TSO_ECN;
395 if (gso && vdev->config->feature(vdev, VIRTIO_NET_F_HOST_UFO))
396 dev->features |= NETIF_F_UFO;
388 } 397 }
389 398
390 /* Configuration may specify what MAC to use. Otherwise random. */ 399 /* Configuration may specify what MAC to use. Otherwise random. */