commit 503b55fd77d11381b1950d1651d3bc782c0cc2cd
author Sridhar Samudrala <sri@us.ibm.com> Sat Jun 17 22:57:28 2006 -0700
committer David S. Miller <davem@davemloft.net> Sat Jun 17 22:57:28 2006 -0700
tree a960542bcc10b97218a601a94e56e579595c0a2c
parent 4c9f5d5305a23851e67471b147e0d459a7166717

[SCTP]: Don't do CRC32C checksum over loopback.

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/sctp/input.c

diff --git a/net/sctp/input.c b/net/sctp/input.c
index 70d6606..42b66e7 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -141,7 +141,8 @@
 	__skb_pull(skb, skb->h.raw - skb->data);
 	if (skb->len < sizeof(struct sctphdr))
 		goto discard_it;
-	if (sctp_rcv_checksum(skb) < 0)
+	if ((skb->ip_summed != CHECKSUM_UNNECESSARY) &&
+	    (sctp_rcv_checksum(skb) < 0))
 		goto discard_it;
 
 	skb_pull(skb, sizeof(struct sctphdr));