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virtio-net: restore VIRTIO_HDR_F_DATA_VALID on receiving

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Commit 501db51139 ("virtio: don't set VIRTIO_NET_HDR_F_DATA_VALID on
xmit") in fact disables VIRTIO_HDR_F_DATA_VALID on receiving path too,
fixing this by adding a hint (has_data_valid) and set it only on the
receiving path.

Cc: Rolf Neugebauer <[email protected]>
Signed-off-by: Jason Wang <[email protected]>
Acked-by: Rolf Neugebauer <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Jason Wang 2017-01-20 14:32:42 +08:00 • committed by David S. Miller
commit 6391a4481b
5 changed files with 10 additions and 6 deletions
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4
net/packet/af_packet.c
View file

@ -1976,7 +1976,7 @@ static int packet_rcv_vnet(struct msghdr *msg, const struct sk_buff *skb,
return -EINVAL;
*len -= sizeof(vnet_hdr);
if (virtio_net_hdr_from_skb(skb, &vnet_hdr, vio_le()))
if (virtio_net_hdr_from_skb(skb, &vnet_hdr, vio_le(), true))
return -EINVAL;
return memcpy_to_msg(msg, (void *)&vnet_hdr, sizeof(vnet_hdr));
@ -2237,7 +2237,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev,
if (po->has_vnet_hdr) {
if (virtio_net_hdr_from_skb(skb, h.raw + macoff -
sizeof(struct virtio_net_hdr),
vio_le())) {
vio_le(), true)) {
spin_lock(&sk->sk_receive_queue.lock);
goto drop_n_account;
}