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[NET]: Fix UDP checksum issue in net poll mode. 

In net poll mode, the current checksum function doesn't consider the
kind of packet which is padded to reach a specific minimum length. I
believe that's the problem causing my test case failed. The following
patch fixed this issue.

Signed-off-by: Aubrey.Li <aubreylee@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Aubrey.Li 2007-04-17 12:40:20 -07:00 committed by David S. Miller
parent 55569ce256
commit 5e7d7fa573
1 changed files with 7 additions and 0 deletions
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7
net/core/netpoll.c
View File

@ -471,6 +471,13 @@ int __netpoll_rx(struct sk_buff *skb)
if (skb->len < len || len < iph->ihl*4)
goto out;
/*
* Our transport medium may have padded the buffer out.
* Now We trim to the true length of the frame.
*/
if (pskb_trim_rcsum(skb, len))
goto out;
if (iph->protocol != IPPROTO_UDP)
goto out;