--- net/sctp/sm_sideeffect.c

+++ net/sctp/sm_sideeffect.c

@@ -397,6 +397,41 @@ out_unlock:

sctp_transport_put(transport);

}

+/* Handle the timeout of the ICMP protocol unreachable timer. Trigger

+ * the correct state machine transition that will close the association.

+ */

+void sctp_generate_proto_unreach_event(unsigned long data)

+{

+ struct sctp_transport *transport = (struct sctp_transport *) data;

+ struct sctp_association *asoc = transport->asoc;

+

+ sctp_bh_lock_sock(asoc->base.sk);

+ if (sock_owned_by_user(asoc->base.sk)) {

+ SCTP_DEBUG_PRINTK("%s:Sock is busy.\n", __func__);

+

+ /* Try again later. */

+ if (!mod_timer(&transport->proto_unreach_timer,

+ jiffies + (HZ/20)))

+ sctp_association_hold(asoc);

+ goto out_unlock;

+ }

+

+ /* Is this structure just waiting around for us to actually

+ * get destroyed?

+ */

+ if (asoc->base.dead)

+ goto out_unlock;

+

+ sctp_do_sm(SCTP_EVENT_T_OTHER,

+ SCTP_ST_OTHER(SCTP_EVENT_ICMP_PROTO_UNREACH),

+ asoc->state, asoc->ep, asoc, transport, GFP_ATOMIC);

+

+out_unlock:

+ sctp_bh_unlock_sock(asoc->base.sk);

+ sctp_association_put(asoc);

+}

+

+

/* Inject a SACK Timeout event into the state machine. */

static void sctp_generate_sack_event(unsigned long data)

{