From: Karsten Graul <kgraul@linux.ibm.com>
Date: Tue, 15 May 2018 17:05:02 +0200
Subject: net/smc: drop messages when link state is inactive
Patch-mainline: v4.18-rc1
Git-commit: 8f332a743cd1943c7d1a1fb806bb0261e35d1b65
References: bsc#1096003, FATE#325023, LTC#164003
Drop incoming messages when the link is flagged as inactive.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
net/smc/smc_llc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c
index 5d7926cc472c..5800a6b43d83 100644
--- a/net/smc/smc_llc.c
+++ b/net/smc/smc_llc.c
@@ -548,6 +548,8 @@ static void smc_llc_rx_handler(struct ib_wc *wc, void *buf)
return; /* short message */
if (llc->raw.hdr.length != sizeof(*llc))
return; /* invalid message */
+ if (link->state == SMC_LNK_INACTIVE)
+ return; /* link not active, drop msg */
switch (llc->raw.hdr.common.type) {
case SMC_LLC_TEST_LINK: