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| author | Sridhar Samudrala <sri@us.ibm.com> | 2006-07-21 14:48:50 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-07-21 14:48:50 -0700 |
| commit | ad8fec1720e000ba2384de6408076a60fc92a981 (patch) | |
| tree | 52fd2f7af583b95db6db369c6b3ea3d6adc26d69 /net/sctp/sm_sideeffect.c | |
| parent | cfdeef3282705a4b872d3559c4e7d2561251363c (diff) | |
| download | op-kernel-dev-ad8fec1720e000ba2384de6408076a60fc92a981.zip op-kernel-dev-ad8fec1720e000ba2384de6408076a60fc92a981.tar.gz | |
[SCTP]: Verify all the paths to a peer via heartbeat before using them.
This patch implements Path Initialization procedure as described in
Sec 2.36 of RFC4460.
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/sm_sideeffect.c')
| -rw-r--r-- | net/sctp/sm_sideeffect.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c index c5beb2a..9c10bde 100644 --- a/net/sctp/sm_sideeffect.c +++ b/net/sctp/sm_sideeffect.c @@ -430,7 +430,11 @@ static void sctp_do_8_2_transport_strike(struct sctp_association *asoc, /* The check for association's overall error counter exceeding the * threshold is done in the state function. */ - asoc->overall_error_count++; + /* When probing UNCONFIRMED addresses, the association overall + * error count is NOT incremented + */ + if (transport->state != SCTP_UNCONFIRMED) + asoc->overall_error_count++; if (transport->state != SCTP_INACTIVE && (transport->error_count++ >= transport->pathmaxrxt)) { @@ -610,7 +614,7 @@ static void sctp_cmd_transport_on(sctp_cmd_seq_t *cmds, /* Mark the destination transport address as active if it is not so * marked. */ - if (t->state == SCTP_INACTIVE) + if ((t->state == SCTP_INACTIVE) || (t->state == SCTP_UNCONFIRMED)) sctp_assoc_control_transport(asoc, t, SCTP_TRANSPORT_UP, SCTP_HEARTBEAT_SUCCESS); @@ -620,6 +624,10 @@ static void sctp_cmd_transport_on(sctp_cmd_seq_t *cmds, */ hbinfo = (sctp_sender_hb_info_t *) chunk->skb->data; sctp_transport_update_rto(t, (jiffies - hbinfo->sent_at)); + + /* Update the heartbeat timer. */ + if (!mod_timer(&t->hb_timer, sctp_transport_timeout(t))) + sctp_transport_hold(t); } /* Helper function to do a transport reset at the expiry of the hearbeat |
