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-rw-r--r--net/sctp/input.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/net/sctp/input.c b/net/sctp/input.c
index c1b991294516..b6493b3f11a9 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -133,9 +133,13 @@ int sctp_rcv(struct sk_buff *skb)
__skb_pull(skb, skb_transport_offset(skb));
if (skb->len < sizeof(struct sctphdr))
goto discard_it;
- if (!sctp_checksum_disable && !skb_csum_unnecessary(skb) &&
- sctp_rcv_checksum(net, skb) < 0)
+
+ skb->csum_valid = 0; /* Previous value not applicable */
+ if (skb_csum_unnecessary(skb))
+ __skb_decr_checksum_unnecessary(skb);
+ else if (!sctp_checksum_disable && sctp_rcv_checksum(net, skb) < 0)
goto discard_it;
+ skb->csum_valid = 1;
skb_pull(skb, sizeof(struct sctphdr));