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authorVlad Yasevich <vladislav.yasevich@hp.com>2008-09-19 03:28:27 +0400
committerDavid S. Miller <davem@davemloft.net>2008-09-19 03:28:27 +0400
commitadd52379dde2e5300e2d574b172e62c6cf43b3d3 (patch)
treec322f35beba73d356a44c1e31fed7a5791175eb6 /net/sctp/associola.c
parent0ef46e285c062cbe35d60c0adbff96f530d31c86 (diff)
downloadlinux-add52379dde2e5300e2d574b172e62c6cf43b3d3.tar.xz
sctp: Fix oops when INIT-ACK indicates that peer doesn't support AUTH
If INIT-ACK is received with SupportedExtensions parameter which indicates that the peer does not support AUTH, the packet will be silently ignore, and sctp_process_init() do cleanup all of the transports in the association. When T1-Init timer is expires, OOPS happen while we try to choose a different init transport. The solution is to only clean up the non-active transports, i.e the ones that the peer added. However, that introduces a problem with sctp_connectx(), because we don't mark the proper state for the transports provided by the user. So, we'll simply mark user-provided transports as ACTIVE. That will allow INIT retransmissions to work properly in the sctp_connectx() context and prevent the crash. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/associola.c')
-rw-r--r--net/sctp/associola.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 8472b8b349c4..abd51cef2413 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -599,11 +599,12 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc,
/* Check to see if this is a duplicate. */
peer = sctp_assoc_lookup_paddr(asoc, addr);
if (peer) {
+ /* An UNKNOWN state is only set on transports added by
+ * user in sctp_connectx() call. Such transports should be
+ * considered CONFIRMED per RFC 4960, Section 5.4.
+ */
if (peer->state == SCTP_UNKNOWN) {
- if (peer_state == SCTP_ACTIVE)
- peer->state = SCTP_ACTIVE;
- if (peer_state == SCTP_UNCONFIRMED)
- peer->state = SCTP_UNCONFIRMED;
+ peer->state = SCTP_ACTIVE;
}
return peer;
}