From d5d3ebe3be5c5123f2d444e186717f45284151e2 Mon Sep 17 00:00:00 2001 From: Shan Wei Date: Fri, 12 Nov 2010 00:15:25 +0000 Subject: [PATCH] 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 Acked-by: Francois Romieu Signed-off-by: David S. Miller --- drivers/net/r8169.c | 3 +-- 1 file changed, 1 insertion(+), 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); -- 2.20.1