[dpdk-stable] [PATCH] net/sfc: fix adapter lock usage on rule creation

[Ivan Malov <ivan.malov@oktetlabs.ru>]

The point is that adapter lock has to be held on
list accesses, as well as when talking to the HW.

Fixes: a9825ccf5bb8 ("net/sfc: support flow API filters")
Cc: stable@dpdk.org

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 drivers/net/sfc/sfc_flow.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/sfc/sfc_flow.c b/drivers/net/sfc/sfc_flow.c
index e4a9ba0ff..8d636f692 100644
--- a/drivers/net/sfc/sfc_flow.c
+++ b/drivers/net/sfc/sfc_flow.c
@@ -2315,10 +2315,10 @@ sfc_flow_create(struct rte_eth_dev *dev,
 	if (rc != 0)
 		goto fail_bad_value;
 
-	TAILQ_INSERT_TAIL(&sa->filter.flow_list, flow, entries);
-
 	sfc_adapter_lock(sa);
 
+	TAILQ_INSERT_TAIL(&sa->filter.flow_list, flow, entries);
+
 	if (sa->state == SFC_ADAPTER_STARTED) {
 		rc = sfc_flow_filter_insert(sa, flow);
 		if (rc != 0) {
-- 
2.20.1