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sctp: Do no select unconfirmed transports for retransmissions

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An unconfirmed transport is one that we have not been
able to reach since the beginning.  There is no point in
trying to retrasnmit data on those transports.  Also, the
specification forbids it due to security issues.

Reported-by: Frank Schuster <frank.schuster01@web.de>

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
This commit is contained in:
Vlad Yasevich 2010-04-30 22:39:26 -04:00
parent bc4f841a05
commit fbdf501c93
1 changed files with 3 additions and 2 deletions
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5
net/sctp/associola.c
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@ -762,7 +762,8 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
asoc->peer.retran_path = peer;
}
if (asoc->peer.active_path == asoc->peer.retran_path) {
if (asoc->peer.active_path == asoc->peer.retran_path &&
peer->state != SCTP_UNCONFIRMED) {
asoc->peer.retran_path = peer;
}
@ -1318,7 +1319,7 @@ void sctp_assoc_update_retran_path(struct sctp_association *asoc)
/* Keep track of the next transport in case
* we don't find any active transport.
*/
if (!next)
if (t->state != SCTP_UNCONFIRMED && !next)
next = t;
}
}