Author: tuexen
Date: Thu Jul 4 19:47:46 2013
New Revision: 252718
URL: http://svnweb.freebsd.org/changeset/base/252718
Log:
When processing an incoming ABORT, SHUTDOWN_COMPLETE or ERROR (NAT related)
chunk, take always the T-bit into account, when checking the verification
tag.
MFC after: 3 days
Modified:
head/sys/netinet/sctp_input.c
Modified: head/sys/netinet/sctp_input.c
==============================================================================
--- head/sys/netinet/sctp_input.c Thu Jul 4 19:45:34 2013
(r252717)
+++ head/sys/netinet/sctp_input.c Thu Jul 4 19:47:46 2013
(r252718)
@@ -4568,8 +4568,10 @@ __attribute__((noinline))
if ((ch->chunk_type == SCTP_ABORT_ASSOCIATION) ||
(ch->chunk_type == SCTP_SHUTDOWN_COMPLETE) ||
(ch->chunk_type == SCTP_PACKET_DROPPED)) {
- if ((vtag_in == asoc->my_vtag) ||
- ((ch->chunk_flags & SCTP_HAD_NO_TCB) &&
+ /* Take the T-bit always into account. */
+ if ((((ch->chunk_flags & SCTP_HAD_NO_TCB) == 0) &&
+ (vtag_in == asoc->my_vtag)) ||
+ (((ch->chunk_flags & SCTP_HAD_NO_TCB) ==
SCTP_HAD_NO_TCB) &&
(vtag_in == asoc->peer_vtag))) {
/* this is valid */
} else {
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