110 	struct sctp_transport *transport;  in sctp_transport_new()  local
112 	transport = kzalloc(sizeof(*transport), gfp);  in sctp_transport_new()
113 	if (!transport)  in sctp_transport_new()
116 	if (!sctp_transport_init(net, transport, addr, gfp))  in sctp_transport_new()
119 	SCTP_DBG_OBJCNT_INC(transport);  in sctp_transport_new()
121 	return transport;  in sctp_transport_new()
124 	kfree(transport);  in sctp_transport_new()
133 void sctp_transport_free(struct sctp_transport *transport)  in sctp_transport_free()  argument
135 	transport->dead = 1;  in sctp_transport_free()
138 	if (del_timer(&transport->hb_timer))  in sctp_transport_free()
139 		sctp_transport_put(transport);  in sctp_transport_free()
146 	if (del_timer(&transport->T3_rtx_timer))  in sctp_transport_free()
147 		sctp_transport_put(transport);  in sctp_transport_free()
150 	if (del_timer(&transport->proto_unreach_timer))  in sctp_transport_free()
151 		sctp_association_put(transport->asoc);  in sctp_transport_free()
153 	sctp_transport_put(transport);  in sctp_transport_free()
158 	struct sctp_transport *transport;  in sctp_transport_destroy_rcu()  local
160 	transport = container_of(head, struct sctp_transport, rcu);  in sctp_transport_destroy_rcu()
162 	dst_release(transport->dst);  in sctp_transport_destroy_rcu()
163 	kfree(transport);  in sctp_transport_destroy_rcu()
164 	SCTP_DBG_OBJCNT_DEC(transport);  in sctp_transport_destroy_rcu()
170 static void sctp_transport_destroy(struct sctp_transport *transport)  in sctp_transport_destroy()  argument
172 	if (unlikely(!transport->dead)) {  in sctp_transport_destroy()
173 		WARN(1, "Attempt to destroy undead transport %p!\n", transport);  in sctp_transport_destroy()
177 	sctp_packet_free(&transport->packet);  in sctp_transport_destroy()
179 	if (transport->asoc)  in sctp_transport_destroy()
180 		sctp_association_put(transport->asoc);  in sctp_transport_destroy()
182 	call_rcu(&transport->rcu, sctp_transport_destroy_rcu);  in sctp_transport_destroy()
188 void sctp_transport_reset_timers(struct sctp_transport *transport)  in sctp_transport_reset_timers()  argument
198 	if (!timer_pending(&transport->T3_rtx_timer))  in sctp_transport_reset_timers()
199 		if (!mod_timer(&transport->T3_rtx_timer,  in sctp_transport_reset_timers()
200 			       jiffies + transport->rto))  in sctp_transport_reset_timers()
201 			sctp_transport_hold(transport);  in sctp_transport_reset_timers()
204 	if (!mod_timer(&transport->hb_timer,  in sctp_transport_reset_timers()
205 		       sctp_transport_timeout(transport)))  in sctp_transport_reset_timers()
206 	    sctp_transport_hold(transport);  in sctp_transport_reset_timers()
213 void sctp_transport_set_owner(struct sctp_transport *transport,  in sctp_transport_set_owner()  argument
216 	transport->asoc = asoc;  in sctp_transport_set_owner()
221 void sctp_transport_pmtu(struct sctp_transport *transport, struct sock *sk)  in sctp_transport_pmtu()  argument
224 	if (!transport->dst || transport->dst->obsolete) {  in sctp_transport_pmtu()
225 		dst_release(transport->dst);  in sctp_transport_pmtu()
226 		transport->af_specific->get_dst(transport, &transport->saddr,  in sctp_transport_pmtu()
227 						&transport->fl, sk);  in sctp_transport_pmtu()
230 	if (transport->dst) {  in sctp_transport_pmtu()
231 		transport->pathmtu = dst_mtu(transport->dst);  in sctp_transport_pmtu()
233 		transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT;  in sctp_transport_pmtu()
268 void sctp_transport_route(struct sctp_transport *transport,  in sctp_transport_route()  argument
271 	struct sctp_association *asoc = transport->asoc;  in sctp_transport_route()
272 	struct sctp_af *af = transport->af_specific;  in sctp_transport_route()
274 	af->get_dst(transport, saddr, &transport->fl, sctp_opt2sk(opt));  in sctp_transport_route()
277 		memcpy(&transport->saddr, saddr, sizeof(union sctp_addr));  in sctp_transport_route()
279 		af->get_saddr(opt, transport, &transport->fl);  in sctp_transport_route()
281 	if ((transport->param_flags & SPP_PMTUD_DISABLE) && transport->pathmtu) {  in sctp_transport_route()
284 	if (transport->dst) {  in sctp_transport_route()
285 		transport->pathmtu = dst_mtu(transport->dst);  in sctp_transport_route()
291 				(transport == asoc->peer.active_path)))  in sctp_transport_route()
292 			opt->pf->to_sk_saddr(&transport->saddr,  in sctp_transport_route()
295 		transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT;  in sctp_transport_route()
299 void sctp_transport_hold(struct sctp_transport *transport)  in sctp_transport_hold()  argument
301 	atomic_inc(&transport->refcnt);  in sctp_transport_hold()
307 void sctp_transport_put(struct sctp_transport *transport)  in sctp_transport_put()  argument
309 	if (atomic_dec_and_test(&transport->refcnt))  in sctp_transport_put()
310 		sctp_transport_destroy(transport);  in sctp_transport_put()
381 void sctp_transport_raise_cwnd(struct sctp_transport *transport,  in sctp_transport_raise_cwnd()  argument
384 	struct sctp_association *asoc = transport->asoc;  in sctp_transport_raise_cwnd()
387 	cwnd = transport->cwnd;  in sctp_transport_raise_cwnd()
388 	flight_size = transport->flight_size;  in sctp_transport_raise_cwnd()
399 	if (TSN_lte(sack_ctsn, transport->asoc->ctsn_ack_point) ||  in sctp_transport_raise_cwnd()
403 	ssthresh = transport->ssthresh;  in sctp_transport_raise_cwnd()
404 	pba = transport->partial_bytes_acked;  in sctp_transport_raise_cwnd()
405 	pmtu = transport->asoc->pathmtu;  in sctp_transport_raise_cwnd()
432 			 __func__, transport, bytes_acked, cwnd, ssthresh,  in sctp_transport_raise_cwnd()
458 			 transport, bytes_acked, cwnd, ssthresh,  in sctp_transport_raise_cwnd()
462 	transport->cwnd = cwnd;  in sctp_transport_raise_cwnd()
463 	transport->partial_bytes_acked = pba;  in sctp_transport_raise_cwnd()
469 void sctp_transport_lower_cwnd(struct sctp_transport *transport,  in sctp_transport_lower_cwnd()  argument
472 	struct sctp_association *asoc = transport->asoc;  in sctp_transport_lower_cwnd()
483 		transport->ssthresh = max(transport->cwnd/2,  in sctp_transport_lower_cwnd()
485 		transport->cwnd = asoc->pathmtu;  in sctp_transport_lower_cwnd()
511 		transport->ssthresh = max(transport->cwnd/2,  in sctp_transport_lower_cwnd()
513 		transport->cwnd = transport->ssthresh;  in sctp_transport_lower_cwnd()
529 		if (time_after(jiffies, transport->last_time_ecne_reduced +  in sctp_transport_lower_cwnd()
530 					transport->rtt)) {  in sctp_transport_lower_cwnd()
531 			transport->ssthresh = max(transport->cwnd/2,  in sctp_transport_lower_cwnd()
533 			transport->cwnd = transport->ssthresh;  in sctp_transport_lower_cwnd()
534 			transport->last_time_ecne_reduced = jiffies;  in sctp_transport_lower_cwnd()
547 		transport->cwnd = max(transport->cwnd/2,  in sctp_transport_lower_cwnd()
552 	transport->partial_bytes_acked = 0;  in sctp_transport_lower_cwnd()
555 		 __func__, transport, reason, transport->cwnd,  in sctp_transport_lower_cwnd()
556 		 transport->ssthresh);  in sctp_transport_lower_cwnd()