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[SCTP]: Implement ADD-IP special case processing for ABORT chunk

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ADD-IP spec has a special case for processing ABORTs:
    F4) ... One special consideration is that ABORT
        Chunks arriving destined to the IP address being deleted MUST be
        ignored (see Section 5.3.1 for further details).

Check if the address we received on is in the DEL state, and if
so, ignore the ABORT.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Yasevich 2007-12-20 14:12:59 -08:00 • committed by David S. Miller
parent f57d96b2e9
commit 75205f4783
3 changed files with 76 additions and 4 deletions
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26
net/sctp/bind_addr.c
View file

@ -353,6 +353,32 @@ int sctp_bind_addr_match(struct sctp_bind_addr *bp,
return match;
}
/* Get the state of the entry in the bind_addr_list */
int sctp_bind_addr_state(const struct sctp_bind_addr *bp,
const union sctp_addr *addr)
{
struct sctp_sockaddr_entry *laddr;
struct sctp_af *af;
int state = -1;
af = sctp_get_af_specific(addr->sa.sa_family);
if (unlikely(!af))
return state;
rcu_read_lock();
list_for_each_entry_rcu(laddr, &bp->address_list, list) {
if (!laddr->valid)
continue;
if (af->cmp_addr(&laddr->a, addr)) {
state = laddr->state;
break;
}
}
rcu_read_unlock();
return state;
}
/* Find the first address in the bind address list that is not present in
* the addrs packed array.
*/