[dpdk-dev] [PATCH] net/sfc: check for ID overflow in action PORT ID

[Ivan Malov]

The container in the action configuration is U32,
but the ID is U16, and overflow check is missing.

Fixes: 1fb65e4dae8a ("net/sfc: support flow action port ID in transfer rules")
Cc: stable at dpdk.org

Signed-off-by: Ivan Malov <ivan.malov at oktetlabs.ru>
Reviewed-by: Andrew Rybchenko <andrew.rybchenko at oktetlabs.ru>
Reviewed-by: Andy Moreton <amoreton at xilinx.com>
---
 drivers/net/sfc/sfc_mae.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/sfc/sfc_mae.c b/drivers/net/sfc/sfc_mae.c
index a2c0aa143..9b7163e82 100644
--- a/drivers/net/sfc/sfc_mae.c
+++ b/drivers/net/sfc/sfc_mae.c
@@ -2563,6 +2563,9 @@ sfc_mae_rule_parse_action_port_id(struct sfc_adapter *sa,
 	uint16_t port_id;
 	int rc;
 
+	if (conf->id > UINT16_MAX)
+		return EOVERFLOW;
+
 	port_id = (conf->original != 0) ? sas->port_id : conf->id;
 
 	rc = sfc_mae_switch_port_by_ethdev(mae->switch_domain_id,
-- 
2.20.1