Remove abs64()

[karo-tx-linux.git] / net / sctp / transport.c

diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 7dd672fa651f979ae6b93578fc678254a7317b6b..aab9e3f29755a58eb7584aa763b4b1a46d2e6608 100644 (file)
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -289,8 +289,8 @@ void sctp_transport_route(struct sctp_transport *transport,
                 */
                if (asoc && (!asoc->peer.primary_path ||
                                (transport == asoc->peer.active_path)))
-                       opt->pf->af->to_sk_saddr(&transport->saddr,
-                                                asoc->base.sk);
+                       opt->pf->to_sk_saddr(&transport->saddr,
+                                            asoc->base.sk);
        } else
                transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT;
 }
@@ -331,7 +331,7 @@ void sctp_transport_update_rto(struct sctp_transport *tp, __u32 rtt)
                 * 1/8, rto_alpha would be expressed as 3.
                 */
                tp->rttvar = tp->rttvar - (tp->rttvar >> net->sctp.rto_beta)
-                       + (((__u32)abs64((__s64)tp->srtt - (__s64)rtt)) >> net->sctp.rto_beta);
+                       + (((__u32)abs((__s64)tp->srtt - (__s64)rtt)) >> net->sctp.rto_beta);
                tp->srtt = tp->srtt - (tp->srtt >> net->sctp.rto_alpha)
                        + (rtt >> net->sctp.rto_alpha);
        } else {
@@ -594,15 +594,16 @@ void sctp_transport_burst_reset(struct sctp_transport *t)
 }
 
 /* What is the next timeout value for this transport? */
-unsigned long sctp_transport_timeout(struct sctp_transport *t)
+unsigned long sctp_transport_timeout(struct sctp_transport *trans)
 {
-       unsigned long timeout;
-       timeout = t->rto + sctp_jitter(t->rto);
-       if ((t->state != SCTP_UNCONFIRMED) &&
-           (t->state != SCTP_PF))
-               timeout += t->hbinterval;
-       timeout += jiffies;
-       return timeout;
+       /* RTO + timer slack +/- 50% of RTO */
+       unsigned long timeout = (trans->rto >> 1) + prandom_u32_max(trans->rto);
+
+       if (trans->state != SCTP_UNCONFIRMED &&
+           trans->state != SCTP_PF)
+               timeout += trans->hbinterval;
+
+       return timeout + jiffies;
 }
 
 /* Reset transport variables to their initial values */