X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=net%2Fsctp%2Ftransport.c;h=d67501f92ca3e756b938636107eb22eece723afb;hb=278554bd6579206921f5d8a523649a7a57f8850d;hp=4a368038d46f77eb4370d6a65f636fa424470bf6;hpb=cea0d767c29669bf89f86e4aee46ef462d2ebae8;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git diff --git a/net/sctp/transport.c b/net/sctp/transport.c index 4a36803..d67501f 100644 --- a/net/sctp/transport.c +++ b/net/sctp/transport.c @@ -64,9 +64,6 @@ static struct sctp_transport *sctp_transport_init(struct sctp_transport *peer, /* Copy in the address. */ peer->ipaddr = *addr; peer->af_specific = sctp_get_af_specific(addr->sa.sa_family); - peer->asoc = NULL; - - peer->dst = NULL; memset(&peer->saddr, 0, sizeof(union sctp_addr)); /* From 6.3.1 RTO Calculation: @@ -76,34 +73,21 @@ static struct sctp_transport *sctp_transport_init(struct sctp_transport *peer, * parameter 'RTO.Initial'. */ peer->rto = msecs_to_jiffies(sctp_rto_initial); - peer->rtt = 0; - peer->rttvar = 0; - peer->srtt = 0; - peer->rto_pending = 0; - peer->hb_sent = 0; - peer->fast_recovery = 0; peer->last_time_heard = jiffies; peer->last_time_ecne_reduced = jiffies; - peer->init_sent_count = 0; - peer->param_flags = SPP_HB_DISABLE | SPP_PMTUD_ENABLE | SPP_SACKDELAY_ENABLE; - peer->hbinterval = 0; /* Initialize the default path max_retrans. */ peer->pathmaxrxt = sctp_max_retrans_path; - peer->error_count = 0; INIT_LIST_HEAD(&peer->transmitted); INIT_LIST_HEAD(&peer->send_ready); INIT_LIST_HEAD(&peer->transports); - peer->T3_rtx_timer.expires = 0; - peer->hb_timer.expires = 0; - setup_timer(&peer->T3_rtx_timer, sctp_generate_t3_rtx_event, (unsigned long)peer); setup_timer(&peer->hb_timer, sctp_generate_heartbeat_event, @@ -115,15 +99,6 @@ static struct sctp_transport *sctp_transport_init(struct sctp_transport *peer, get_random_bytes(&peer->hb_nonce, sizeof(peer->hb_nonce)); atomic_set(&peer->refcnt, 1); - peer->dead = 0; - - peer->malloced = 0; - - /* Initialize the state information for SFR-CACC */ - peer->cacc.changeover_active = 0; - peer->cacc.cycling_changeover = 0; - peer->cacc.next_tsn_at_change = 0; - peer->cacc.cacc_saw_newack = 0; return peer; } @@ -197,7 +172,7 @@ static void sctp_transport_destroy(struct sctp_transport *transport) /* Start T3_rtx timer if it is not already running and update the heartbeat * timer. This routine is called every time a DATA chunk is sent. */ -void sctp_transport_reset_timers(struct sctp_transport *transport, int force) +void sctp_transport_reset_timers(struct sctp_transport *transport) { /* RFC 2960 6.3.2 Retransmission Timer Rules * @@ -207,7 +182,7 @@ void sctp_transport_reset_timers(struct sctp_transport *transport, int force) * address. */ - if (force || !timer_pending(&transport->T3_rtx_timer)) + if (!timer_pending(&transport->T3_rtx_timer)) if (!mod_timer(&transport->T3_rtx_timer, jiffies + transport->rto)) sctp_transport_hold(transport); @@ -405,15 +380,16 @@ void sctp_transport_update_rto(struct sctp_transport *tp, __u32 rtt) void sctp_transport_raise_cwnd(struct sctp_transport *transport, __u32 sack_ctsn, __u32 bytes_acked) { + struct sctp_association *asoc = transport->asoc; __u32 cwnd, ssthresh, flight_size, pba, pmtu; cwnd = transport->cwnd; flight_size = transport->flight_size; /* See if we need to exit Fast Recovery first */ - if (transport->fast_recovery && - TSN_lte(transport->fast_recovery_exit, sack_ctsn)) - transport->fast_recovery = 0; + if (asoc->fast_recovery && + TSN_lte(asoc->fast_recovery_exit, sack_ctsn)) + asoc->fast_recovery = 0; /* The appropriate cwnd increase algorithm is performed if, and only * if the cumulative TSN whould advanced and the congestion window is @@ -442,7 +418,7 @@ void sctp_transport_raise_cwnd(struct sctp_transport *transport, * 2) the destination's path MTU. This upper bound protects * against the ACK-Splitting attack outlined in [SAVAGE99]. */ - if (transport->fast_recovery) + if (asoc->fast_recovery) return; if (bytes_acked > pmtu) @@ -493,6 +469,8 @@ void sctp_transport_raise_cwnd(struct sctp_transport *transport, void sctp_transport_lower_cwnd(struct sctp_transport *transport, sctp_lower_cwnd_t reason) { + struct sctp_association *asoc = transport->asoc; + switch (reason) { case SCTP_LOWER_CWND_T3_RTX: /* RFC 2960 Section 7.2.3, sctpimpguide @@ -503,11 +481,11 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport, * partial_bytes_acked = 0 */ transport->ssthresh = max(transport->cwnd/2, - 4*transport->asoc->pathmtu); - transport->cwnd = transport->asoc->pathmtu; + 4*asoc->pathmtu); + transport->cwnd = asoc->pathmtu; - /* T3-rtx also clears fast recovery on the transport */ - transport->fast_recovery = 0; + /* T3-rtx also clears fast recovery */ + asoc->fast_recovery = 0; break; case SCTP_LOWER_CWND_FAST_RTX: @@ -523,15 +501,15 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport, * cwnd = ssthresh * partial_bytes_acked = 0 */ - if (transport->fast_recovery) + if (asoc->fast_recovery) return; /* Mark Fast recovery */ - transport->fast_recovery = 1; - transport->fast_recovery_exit = transport->asoc->next_tsn - 1; + asoc->fast_recovery = 1; + asoc->fast_recovery_exit = asoc->next_tsn - 1; transport->ssthresh = max(transport->cwnd/2, - 4*transport->asoc->pathmtu); + 4*asoc->pathmtu); transport->cwnd = transport->ssthresh; break; @@ -551,7 +529,7 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport, if (time_after(jiffies, transport->last_time_ecne_reduced + transport->rtt)) { transport->ssthresh = max(transport->cwnd/2, - 4*transport->asoc->pathmtu); + 4*asoc->pathmtu); transport->cwnd = transport->ssthresh; transport->last_time_ecne_reduced = jiffies; } @@ -567,7 +545,7 @@ void sctp_transport_lower_cwnd(struct sctp_transport *transport, * interval. */ transport->cwnd = max(transport->cwnd/2, - 4*transport->asoc->pathmtu); + 4*asoc->pathmtu); break; } @@ -652,7 +630,6 @@ void sctp_transport_reset(struct sctp_transport *t) t->error_count = 0; t->rto_pending = 0; t->hb_sent = 0; - t->fast_recovery = 0; /* Initialize the state information for SFR-CACC */ t->cacc.changeover_active = 0;