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[SCTP]: ADDIP: Don't use an address as source until it is ASCONF-ACKed

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This implements Rules D1 and D4 of Sec 4.3 in the ADDIP draft.

Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Sridhar Samudrala
2006-07-21 14:49:25 -07:00
committed by David S. Miller
parent 9faa730f1c
commit dc022a9874
6 changed files with 81 additions and 28 deletions
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10
net/sctp/sm_make_chunk.c
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@@ -1493,7 +1493,7 @@ no_hmac:
/* Also, add the destination address. */
if (list_empty(&retval->base.bind_addr.address_list)) {
sctp_add_bind_addr(&retval->base.bind_addr, &chunk->dest,
sctp_add_bind_addr(&retval->base.bind_addr, &chunk->dest, 1,
GFP_ATOMIC);
}
@@ -2565,6 +2565,7 @@ static int sctp_asconf_param_success(struct sctp_association *asoc,
union sctp_addr_param *addr_param;
struct list_head *pos;
struct sctp_transport *transport;
struct sctp_sockaddr_entry *saddr;
int retval = 0;
addr_param = (union sctp_addr_param *)
@@ -2578,7 +2579,11 @@ static int sctp_asconf_param_success(struct sctp_association *asoc,
case SCTP_PARAM_ADD_IP:
sctp_local_bh_disable();
sctp_write_lock(&asoc->base.addr_lock);
retval = sctp_add_bind_addr(bp, &addr, GFP_ATOMIC);
list_for_each(pos, &bp->address_list) {
saddr = list_entry(pos, struct sctp_sockaddr_entry, list);
if (sctp_cmp_addr_exact(&saddr->a, &addr))
saddr->use_as_src = 1;
}
sctp_write_unlock(&asoc->base.addr_lock);
sctp_local_bh_enable();
break;
@@ -2591,6 +2596,7 @@ static int sctp_asconf_param_success(struct sctp_association *asoc,
list_for_each(pos, &asoc->peer.transport_addr_list) {
transport = list_entry(pos, struct sctp_transport,
transports);
dst_release(transport->dst);
sctp_transport_route(transport, NULL,
sctp_sk(asoc->base.sk));
}