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[UDP6]: Restore sk_filter optimisation 

This reverts the changeset

    [IPV6]: UDPv6 checksum.

    We always need to check UDPv6 checksum because it is mandatory.

The sk_filter optimisation has nothing to do whether we verify the
checksum.  It simply postpones it to the point when the user calls
recv or poll.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2007-03-06 20:29:58 -08:00 committed by David S. Miller
parent 243bbcaa09
commit 1ab6eb62b0
1 changed files with 4 additions and 2 deletions
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6
net/ipv6/udp.c
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@ -279,8 +279,10 @@ int udpv6_queue_rcv_skb(struct sock * sk, struct sk_buff *skb)
}
}
if (udp_lib_checksum_complete(skb))
goto drop;
if (sk->sk_filter) {
if (udp_lib_checksum_complete(skb))
goto drop;
}
if ((rc = sock_queue_rcv_skb(sk,skb)) < 0) {
/* Note that an ENOMEM error is charged twice */