[SCTP]: Do not timestamp every SCTP packet.

We only need the timestamp on COOKIE-ECHO chunks, so instead of always
timestamping every SCTP packet, let common code timestamp if the socket
option is set.  For COOKIE-ECHO, simply get the time of day if we don't
have a timestamp.  This introduces a small possibility that the cookie
may be considered expired, but it will be renegotiated.

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

1 files changed, 0 insertions, 6 deletions

diff --git a/net/sctp/input.c b/net/sctp/input.c
index 4714882ada96..64f630102532 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -218,12 +218,6 @@ int sctp_rcv(struct sk_buff *skb)
                 }
         }
 
-        /* SCTP seems to always need a timestamp right now (FIXME) */
-        if (skb->tstamp.off_sec == 0) {
-                __net_timestamp(skb);
-                sock_enable_timestamp(sk); 
-        }
-
         if (!xfrm_policy_check(sk, XFRM_POLICY_IN, skb, family))
                 goto discard_release;
         nf_reset(skb);