From: Karsten Graul <kgraul@linux.ibm.com>
Date: Tue, 15 May 2018 15:05:02 +0000 (+0200)
Subject: net/smc: drop messages when link state is inactive
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=8f332a743cd1943c7d1a1fb806bb0261e35d1b65;p=linux.git

net/smc: drop messages when link state is inactive

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>
---

diff --git a/net/smc/smc_llc.c b/net/smc/smc_llc.c
index 5d7926cc472c7..5800a6b43d830 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: