linux-kernel - [PATCH] net: sctp: set chunk->tsn_gap

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 22 Nov 2013 08:49:49 +0100
From:	Chang Xiangzhong <changxiangzhong@...il.com>
To:	vyasevich@...il.com, nhorman@...driver.com, davem@...emloft.net
Cc:	linux-sctp@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Chang Xiangzhong <changxiangzhong@...il.com>
Subject: [PATCH] net: sctp: set chunk->tsn_gap_acked at the end of cycle

tsn_gap_acked is an important state flag in chunk, which indicates if the
chunk has been acked in gap reports before. SFR-CACC algorithm depends on this
variable. So set this at the end of each iteration, otherwise the SFR-CACC
algorithm would never be toggled.

Signed-off-by: Chang Xiangzhong <changxiangzhong@...il.com>
---
 net/sctp/outqueue.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index 1b494fa..bff828c 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -1396,7 +1396,6 @@ static void sctp_check_transmitted(struct sctp_outq *q,
 			 * while DATA was outstanding).
 			 */
 			if (!tchunk->tsn_gap_acked) {
-				tchunk->tsn_gap_acked = 1;
 				if (TSN_lt(*highest_new_tsn_in_sack, tsn))
 					*highest_new_tsn_in_sack = tsn;
 				bytes_acked += sctp_data_size(tchunk);
@@ -1460,6 +1459,8 @@ static void sctp_check_transmitted(struct sctp_outq *q,
 				 */
 				list_add_tail(lchunk, &tlist);
 			}
+
+			tchunk->tsn_gap_acked = 1;
 		} else {
 			if (tchunk->tsn_gap_acked) {
 				pr_debug("%s: receiver reneged on data TSN:0x%x\n",
-- 
1.8.4.3

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/