diff options
| author | Michał Mirosław <mirq-linux@rere.qmqm.pl> | 2010-12-14 12:35:13 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-16 14:41:35 -0800 |
| commit | 0b7967503dc97864f283a3a06fbe23e041876138 (patch) | |
| tree | 66029b76d2d8f5fc74a3e8be0637b3814a0fd34a /drivers/net/veth.c | |
| parent | 76d661586c8131453ba75a2e027c1f21511a893a (diff) | |
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: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/veth.c')
| -rw-r--r-- | drivers/net/veth.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 0bbc0c32313..cc83fa71c3f 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -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; |