Commit 0b796750 authored by Michał Mirosław's avatar Michał Mirosław Committed by David S. Miller
Browse files

net/veth: Fix packet checksumming 



We can't change ip_summed from CHECKSUM_PARTIAL to CHECKSUM_NONE
or CHECKSUM_UNNECESSARY because checksum in packet's headers is
not valid and will cause invalid checksum when frame is forwarded.

Signed-off-by: default avatarMichał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 76d66158

drivers/net/veth.c

+3 −1
Original line number Diff line number Diff line
@@ -166,7 +166,9 @@ static netdev_tx_t veth_xmit(struct sk_buff *skb, struct net_device *dev) 
	if (!(rcv->flags & IFF_UP))

		goto tx_drop;



	if (dev->features & NETIF_F_NO_CSUM)

	/* don't change ip_summed == CHECKSUM_PARTIAL, as that

	   will cause bad checksum on forwarded packets */

	if (skb->ip_summed == CHECKSUM_NONE)

		skb->ip_summed = rcv_priv->ip_summed;



	length = skb->len + ETH_HLEN;