280 	struct sctp_transport *t = chunk->transport;  in sctp_backlog_rcv()  local
338 		sctp_transport_put(t);  in sctp_backlog_rcv()
350 	struct sctp_transport *t = chunk->transport;  in sctp_add_backlog()  local
361 			sctp_transport_hold(t);  in sctp_add_backlog()
373 			   struct sctp_transport *t, __u32 pmtu)  in sctp_icmp_frag_needed()  argument
375 	if (!t ||  in sctp_icmp_frag_needed()
376 	    (t->pathmtu <= pmtu &&  in sctp_icmp_frag_needed()
377 	     t->pl.probe_size + sctp_transport_pl_hlen(t) <= pmtu))  in sctp_icmp_frag_needed()
381 		atomic_set(&t->mtu_info, pmtu);  in sctp_icmp_frag_needed()
383 		t->pmtu_pending = 1;  in sctp_icmp_frag_needed()
387 	if (!(t->param_flags & SPP_PMTUD_ENABLE))  in sctp_icmp_frag_needed()
398 	if (!sctp_transport_update_pmtu(t, pmtu))  in sctp_icmp_frag_needed()
405 	sctp_retransmit(&asoc->outqueue, t, SCTP_RTXR_PMTUD);  in sctp_icmp_frag_needed()
408 void sctp_icmp_redirect(struct sock *sk, struct sctp_transport *t,  in sctp_icmp_redirect()  argument
413 	if (sock_owned_by_user(sk) || !t)  in sctp_icmp_redirect()
415 	dst = sctp_transport_dst_check(t);  in sctp_icmp_redirect()
433 			   struct sctp_transport *t)  in sctp_icmp_proto_unreachable()  argument
436 		if (timer_pending(&t->proto_unreach_timer))  in sctp_icmp_proto_unreachable()
439 			if (!mod_timer(&t->proto_unreach_timer,  in sctp_icmp_proto_unreachable()
441 				sctp_transport_hold(t);  in sctp_icmp_proto_unreachable()
449 		if (del_timer(&t->proto_unreach_timer))  in sctp_icmp_proto_unreachable()
450 			sctp_transport_put(t);  in sctp_icmp_proto_unreachable()
454 			   asoc->state, asoc->ep, asoc, t,  in sctp_icmp_proto_unreachable()
541 void sctp_err_finish(struct sock *sk, struct sctp_transport *t)  in sctp_err_finish()  argument
545 	sctp_transport_put(t);  in sctp_err_finish()
548 static void sctp_v4_err_handle(struct sctp_transport *t, struct sk_buff *skb,  in sctp_v4_err_handle()  argument
551 	struct sctp_association *asoc = t->asoc;  in sctp_v4_err_handle()
563 			sctp_icmp_frag_needed(sk, asoc, t, SCTP_TRUNC4(info));  in sctp_v4_err_handle()
567 			sctp_icmp_proto_unreachable(sk, asoc, t);  in sctp_v4_err_handle()
579 		sctp_icmp_redirect(sk, t, skb);  in sctp_v4_err_handle()
642 	struct sctp_transport *t;  in sctp_udp_v4_err()  local
647 	sk = sctp_err_lookup(net, AF_INET, skb, sctp_hdr(skb), &asoc, &t);  in sctp_udp_v4_err()
657 		sctp_err_finish(sk, t);  in sctp_udp_v4_err()
662 	sctp_v4_err_handle(t, skb, hdr->type, hdr->code, info);  in sctp_udp_v4_err()
664 	sctp_err_finish(sk, t);  in sctp_udp_v4_err()
888 	struct sctp_transport *t = (struct sctp_transport *)ptr;  in sctp_hash_cmp()  local
892 	if (!sctp_cmp_addr_exact(&t->ipaddr, x->paddr))  in sctp_hash_cmp()
894 	if (!sctp_transport_hold(t))  in sctp_hash_cmp()
897 	if (!net_eq(t->asoc->base.net, x->net))  in sctp_hash_cmp()
899 	if (x->lport != htons(t->asoc->base.bind_addr.port))  in sctp_hash_cmp()
904 	sctp_transport_put(t);  in sctp_hash_cmp()
910 	const struct sctp_transport *t = data;  in sctp_hash_obj()  local
912 	return sctp_hashfn(t->asoc->base.net,  in sctp_hash_obj()
913 			   htons(t->asoc->base.bind_addr.port),  in sctp_hash_obj()
914 			   &t->ipaddr, seed);  in sctp_hash_obj()
942 int sctp_hash_transport(struct sctp_transport *t)  in sctp_hash_transport()  argument
949 	if (t->asoc->temp)  in sctp_hash_transport()
952 	arg.net   = t->asoc->base.net;  in sctp_hash_transport()
953 	arg.paddr = &t->ipaddr;  in sctp_hash_transport()
954 	arg.lport = htons(t->asoc->base.bind_addr.port);  in sctp_hash_transport()
961 		if (transport->asoc->ep == t->asoc->ep) {  in sctp_hash_transport()
968 				  &t->node, sctp_hash_params);  in sctp_hash_transport()
975 void sctp_unhash_transport(struct sctp_transport *t)  in sctp_unhash_transport()  argument
977 	if (t->asoc->temp)  in sctp_unhash_transport()
980 	rhltable_remove(&sctp_transport_hashtable, &t->node,  in sctp_unhash_transport()
1002 	struct sctp_transport *t;  in sctp_addrs_lookup_transport()  local
1013 	rhl_for_each_entry_rcu(t, tmp, list, node) {  in sctp_addrs_lookup_transport()
1014 		if (!sctp_transport_hold(t))  in sctp_addrs_lookup_transport()
1017 		bound_dev_if = READ_ONCE(t->asoc->base.sk->sk_bound_dev_if);  in sctp_addrs_lookup_transport()
1019 		    sctp_bind_addr_match(&t->asoc->base.bind_addr,  in sctp_addrs_lookup_transport()
1020 					 laddr, sctp_sk(t->asoc->base.sk)))  in sctp_addrs_lookup_transport()
1021 			return t;  in sctp_addrs_lookup_transport()
1022 		sctp_transport_put(t);  in sctp_addrs_lookup_transport()
1034 	struct sctp_transport *t;  in sctp_epaddr_lookup_transport()  local
1044 	rhl_for_each_entry_rcu(t, tmp, list, node)  in sctp_epaddr_lookup_transport()
1045 		if (ep == t->asoc->ep)  in sctp_epaddr_lookup_transport()
1046 			return t;  in sctp_epaddr_lookup_transport()
1059 	struct sctp_transport *t;  in __sctp_lookup_association()  local
1062 	t = sctp_addrs_lookup_transport(net, local, peer, dif, sdif);  in __sctp_lookup_association()
1063 	if (!t)  in __sctp_lookup_association()
1066 	asoc = t->asoc;  in __sctp_lookup_association()
1067 	*pt = t;  in __sctp_lookup_association()