[PATCH 3.16 37/83] sctp: fix the transport error_count check
From: Ben Hutchings
Date: Wed Nov 20 2019 - 10:43:52 EST
3.16.78-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Xin Long <lucien.xin@xxxxxxxxx>
commit a1794de8b92ea6bc2037f445b296814ac826693e upstream.
As the annotation says in sctp_do_8_2_transport_strike():
"If the transport error count is greater than the pf_retrans
threshold, and less than pathmaxrtx ..."
It should be transport->error_count checked with pathmaxrxt,
instead of asoc->pf_retrans.
Fixes: 5aa93bcf66f4 ("sctp: Implement quick failover draft from tsvwg")
Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@xxxxxxxxx>
Signed-off-by: Jakub Kicinski <jakub.kicinski@xxxxxxxxxxxxx>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
net/sctp/sm_sideeffect.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -504,7 +504,7 @@ static void sctp_do_8_2_transport_strike
* see SCTP Quick Failover Draft, section 5.1
*/
if ((transport->state == SCTP_ACTIVE) &&
- (asoc->pf_retrans < transport->pathmaxrxt) &&
+ (transport->error_count < transport->pathmaxrxt) &&
(transport->error_count > asoc->pf_retrans)) {
sctp_assoc_control_transport(asoc, transport,