diff options
Diffstat (limited to 'net/sctp/input.c')
| -rw-r--r-- | net/sctp/input.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/net/sctp/input.c b/net/sctp/input.c index 458e506ef84b..fc458968fe4b 100644 --- a/net/sctp/input.c +++ b/net/sctp/input.c @@ -872,6 +872,8 @@ void sctp_transport_hashtable_destroy(void) int sctp_hash_transport(struct sctp_transport *t) { + struct sctp_transport *transport; + struct rhlist_head *tmp, *list; struct sctp_hash_cmp_arg arg; int err; @@ -882,8 +884,19 @@ int sctp_hash_transport(struct sctp_transport *t) arg.paddr = &t->ipaddr; arg.lport = htons(t->asoc->base.bind_addr.port); + list = rhltable_lookup(&sctp_transport_hashtable, &arg, + sctp_hash_params); + + rhl_for_each_entry_rcu(transport, tmp, list, node) + if (transport->asoc->ep == t->asoc->ep) { + err = -EEXIST; + goto out; + } + err = rhltable_insert_key(&sctp_transport_hashtable, &arg, &t->node, sctp_hash_params); + +out: if (err) pr_err_once("insert transport fail, errno %d\n", err); @@ -1229,13 +1242,26 @@ static struct sctp_association *__sctp_rcv_lookup(struct net *net, struct sctp_association *asoc; asoc = __sctp_lookup_association(net, laddr, paddr, transportp); + if (asoc) + goto out; /* Further lookup for INIT/INIT-ACK packets. * SCTP Implementors Guide, 2.18 Handling of address * parameters within the INIT or INIT-ACK. */ - if (!asoc) - asoc = __sctp_rcv_lookup_harder(net, skb, laddr, transportp); + asoc = __sctp_rcv_lookup_harder(net, skb, laddr, transportp); + if (asoc) + goto out; + + if (paddr->sa.sa_family == AF_INET) + pr_debug("sctp: asoc not found for src:%pI4:%d dst:%pI4:%d\n", + &laddr->v4.sin_addr, ntohs(laddr->v4.sin_port), + &paddr->v4.sin_addr, ntohs(paddr->v4.sin_port)); + else + pr_debug("sctp: asoc not found for src:%pI6:%d dst:%pI6:%d\n", + &laddr->v6.sin6_addr, ntohs(laddr->v6.sin6_port), + &paddr->v6.sin6_addr, ntohs(paddr->v6.sin6_port)); +out: return asoc; } |