diff options
Diffstat (limited to 'net/sctp/associola.c')
| -rw-r--r-- | net/sctp/associola.c | 81 |
1 files changed, 55 insertions, 26 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c index dec68a604773..9d05e13e92f6 100644 --- 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: |