From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Date: Fri, 27 Sep 2013 15:34:49 +0000 (-0700)
Subject: Revert "sctp: fix call to SCTP_CMD_PROCESS_SACK in sctp_cmd_interpreter()"
X-Git-Tag: v3.0.98~17
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=88d1fdb41513e68a6a11d1ee8c2d23ef9fdf63a5;p=thirdparty%2Fkernel%2Fstable.git

Revert "sctp: fix call to SCTP_CMD_PROCESS_SACK in sctp_cmd_interpreter()"

This reverts commit b23270416da409bd4e637a5acbe31a1126235fb6 which is
commit f6e80abeab928b7c47cc1fbf53df13b4398a2bec.

Michal writes:
	Mainline commit f6e80abe was introduced in v3.7-rc2 as a
	follow-up fix to commit

	  edfee033  sctp: check src addr when processing SACK to update transport state

	(from v3.7-rc1) which changed the interpretation of third
	argument to sctp_cmd_process_sack() and sctp_outq_sack(). But as
	commit edfee033 has never been backported to stable branches,
	backport of commit f6e80abe actually breaks the code rather than
	fixing it.

Reported-by: Michal Kubecek <mkubecek@suse.cz>
Cc: Zijie Pan <zijie.pan@6wind.com>
Cc: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Cc: Vlad Yasevich <vyasevich@gmail.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index edac24a128436..6e0f88295aafd 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -1604,9 +1604,8 @@ static int sctp_cmd_interpreter(sctp_event_t event_type,
 					asoc->outqueue.outstanding_bytes;
 			sackh.num_gap_ack_blocks = 0;
 			sackh.num_dup_tsns = 0;
-			chunk->subh.sack_hdr = &sackh;
 			sctp_add_cmd_sf(commands, SCTP_CMD_PROCESS_SACK,
-					SCTP_CHUNK(chunk));
+					SCTP_SACKH(&sackh));
 			break;
 
 		case SCTP_CMD_DISCARD_PACKET: