diff options
| author |   Shan Wei <shanwei@cn.fujitsu.com> | 2010-11-12 00:15:25 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2010-11-17 12:21:14 -0800 |
| commit | d5d3ebe3be5c5123f2d444e186717f45284151e2 (patch) | |
| tree | 54789aa8b662301a4483d27dcb86a0201aa7137b /drivers/net | |
| parent | rds: Integer overflow in RDS cmsg handling (diff) | |
| download | linux-dev-d5d3ebe3be5c5123f2d444e186717f45284151e2.tar.xz linux-dev-d5d3ebe3be5c5123f2d444e186717f45284151e2.zip | |
r8169: fix checksum broken
If r8196 received packets with invalid sctp/igmp(not tcp, udp) checksum, r8196 set skb->ip_summed
wit CHECKSUM_UNNECESSARY. This cause that upper protocol don't check checksum field.
I am not family with r8196 driver. I try to guess the meaning of RxProtoIP and IPFail.
RxProtoIP stands for received IPv4 packet that upper protocol is not tcp and udp.
!(opts1 & IPFail) is true means that driver correctly to check checksum in IPv4 header.
If it's right, I think we should not set ip_summed wit CHECKSUM_UNNECESSARY for my sctp packets
with invalid checksum.
If it's not right, please tell me.
Signed-off-by: Shan Wei <shanwei@cn.fujitsu.com>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/r8169.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c index 4c4d16905efb..7d33ef4bcb4a 100644 --- a/drivers/net/r8169.c +++ b/drivers/net/r8169.c @@ -4440,8 +4440,7 @@ static inline void rtl8169_rx_csum(struct sk_buff *skb, u32 opts1) u32 status = opts1 & RxProtoMask; if (((status == RxProtoTCP) && !(opts1 & TCPFail)) || - ((status == RxProtoUDP) && !(opts1 & UDPFail)) || - ((status == RxProtoIP) && !(opts1 & IPFail))) + ((status == RxProtoUDP) && !(opts1 & UDPFail))) skb->ip_summed = CHECKSUM_UNNECESSARY; else skb_checksum_none_assert(skb); |