[SCTP]: Update SCTP_PEER_ADDR_PARAMS socket option to the latest api draft.

[net-next-2.6.git] / net / sctp / associola.c

diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index dec68a60477310c700dfdec911cc2ebcd719218b..9d05e13e92f69c8f276db2f8a53bed71988ff1ea 100644 (file)
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -110,7 +110,6 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
        asoc->cookie_life.tv_sec = sp->assocparams.sasoc_cookie_life / 1000;
        asoc->cookie_life.tv_usec = (sp->assocparams.sasoc_cookie_life % 1000)
                                        * 1000;
-       asoc->pmtu = 0;
        asoc->frag_point = 0;
 
        /* Set the association max_retrans and RTO values from the
@@ -123,6 +122,25 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
 
        asoc->overall_error_count = 0;
 
+       /* Initialize the association's heartbeat interval based on the
+        * sock configured value.
+        */
+       asoc->hbinterval = msecs_to_jiffies(sp->hbinterval);
+
+       /* Initialize path max retrans value. */
+       asoc->pathmaxrxt = sp->pathmaxrxt;
+
+       /* Initialize default path MTU. */
+       asoc->pathmtu = sp->pathmtu;
+
+       /* Set association default SACK delay */
+       asoc->sackdelay = msecs_to_jiffies(sp->sackdelay);
+
+       /* Set the association default flags controlling
+        * Heartbeat, SACK delay, and Path MTU Discovery.
+        */
+       asoc->param_flags = sp->param_flags;
+
        /* Initialize the maximum mumber of new data packets that can be sent
         * in a burst.
         */
@@ -144,8 +162,7 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
                = 5 * asoc->rto_max;
 
        asoc->timeouts[SCTP_EVENT_TIMEOUT_HEARTBEAT] = 0;
-       asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] =
-               SCTP_DEFAULT_TIMEOUT_SACK;
+       asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] = asoc->sackdelay;
        asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE] =
                sp->autoclose * HZ;
        
@@ -540,23 +557,46 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
 
        sctp_transport_set_owner(peer, asoc);
 
+       /* Initialize the peer's heartbeat interval based on the
+        * association configured value.
+        */
+       peer->hbinterval = asoc->hbinterval;
+
+       /* Set the path max_retrans.  */
+       peer->pathmaxrxt = asoc->pathmaxrxt;
+
+       /* Initialize the peer's SACK delay timeout based on the
+        * association configured value.
+        */
+       peer->sackdelay = asoc->sackdelay;
+
+       /* Enable/disable heartbeat, SACK delay, and path MTU discovery
+        * based on association setting.
+        */
+       peer->param_flags = asoc->param_flags;
+
        /* Initialize the pmtu of the transport. */
-       sctp_transport_pmtu(peer);
+       if (peer->param_flags & SPP_PMTUD_ENABLE)
+               sctp_transport_pmtu(peer);
+       else if (asoc->pathmtu)
+               peer->pathmtu = asoc->pathmtu;
+       else
+               peer->pathmtu = SCTP_DEFAULT_MAXSEGMENT;
 
        /* If this is the first transport addr on this association,
         * initialize the association PMTU to the peer's PMTU.
         * If not and the current association PMTU is higher than the new
         * peer's PMTU, reset the association PMTU to the new peer's PMTU.
         */
-       if (asoc->pmtu)
-               asoc->pmtu = min_t(int, peer->pmtu, asoc->pmtu);
+       if (asoc->pathmtu)
+               asoc->pathmtu = min_t(int, peer->pathmtu, asoc->pathmtu);
        else
-               asoc->pmtu = peer->pmtu;
+               asoc->pathmtu = peer->pathmtu;
 
        SCTP_DEBUG_PRINTK("sctp_assoc_add_peer:association %p PMTU set to "
-                         "%d\n", asoc, asoc->pmtu);
+                         "%d\n", asoc, asoc->pathmtu);
 
-       asoc->frag_point = sctp_frag_point(sp, asoc->pmtu);
+       asoc->frag_point = sctp_frag_point(sp, asoc->pathmtu);
 
        /* The asoc->peer.port might not be meaningful yet, but
         * initialize the packet structure anyway.
@@ -574,7 +614,7 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
         *   (for example, implementations MAY use the size of the
         *   receiver advertised window).
         */
-       peer->cwnd = min(4*asoc->pmtu, max_t(__u32, 2*asoc->pmtu, 4380));
+       peer->cwnd = min(4*asoc->pathmtu, max_t(__u32, 2*asoc->pathmtu, 4380));
 
        /* At this point, we may not have the receiver's advertised window,
         * so initialize ssthresh to the default value and it will be set
@@ -585,17 +625,6 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
        peer->partial_bytes_acked = 0;
        peer->flight_size = 0;
 
-       /* By default, enable heartbeat for peer address. */
-       peer->hb_allowed = 1;
-
-       /* Initialize the peer's heartbeat interval based on the
-        * sock configured value.
-        */
-       peer->hb_interval = msecs_to_jiffies(sp->paddrparam.spp_hbinterval);
-
-       /* Set the path max_retrans.  */
-       peer->max_retrans = sp->paddrparam.spp_pathmaxrxt;
-
        /* Set the transport's RTO.initial value */
        peer->rto = asoc->rto_initial;
 
@@ -1155,18 +1184,18 @@ void sctp_assoc_sync_pmtu(struct sctp_association *asoc)
        /* Get the lowest pmtu of all the transports. */
        list_for_each(pos, &asoc->peer.transport_addr_list) {
                t = list_entry(pos, struct sctp_transport, transports);
-               if (!pmtu || (t->pmtu < pmtu))
-                       pmtu = t->pmtu;
+               if (!pmtu || (t->pathmtu < pmtu))
+                       pmtu = t->pathmtu;
        }
 
        if (pmtu) {
                struct sctp_sock *sp = sctp_sk(asoc->base.sk);
-               asoc->pmtu = pmtu;
+               asoc->pathmtu = pmtu;
                asoc->frag_point = sctp_frag_point(sp, pmtu);
        }
 
        SCTP_DEBUG_PRINTK("%s: asoc:%p, pmtu:%d, frag_point:%d\n",
-                         __FUNCTION__, asoc, asoc->pmtu, asoc->frag_point);
+                         __FUNCTION__, asoc, asoc->pathmtu, asoc->frag_point);
 }
 
 /* Should we send a SACK to update our peer? */
@@ -1179,7 +1208,7 @@ static inline int sctp_peer_needs_update(struct sctp_association *asoc)
        case SCTP_STATE_SHUTDOWN_SENT:
                if ((asoc->rwnd > asoc->a_rwnd) &&
                    ((asoc->rwnd - asoc->a_rwnd) >=
-                    min_t(__u32, (asoc->base.sk->sk_rcvbuf >> 1), asoc->pmtu)))
+                    min_t(__u32, (asoc->base.sk->sk_rcvbuf >> 1), asoc->pathmtu)))
                        return 1;
                break;
        default: