[dpdk-stable] [PATCH v2] app/testpmd: check port is stopped for QinQ setup

[Bernard Iremonger <bernard.iremonger@intel.com>]

Check port is stopped before configuring it for QinQ,
with the "vlan set qinq on <port_id>" command.

The above command sets the hw_vlan_extend flag.
When the port is started it calls the
i40e_rx_vec_dev_conf_condition_check_default function to
decide whether or not to select the vector mode driver
depending on the state of the hw_vlan_extend flag.

Fixes: a47aa8b97afe ("app/testpmd: add vlan offload support")
Cc: stable@dpdk.org

Signed-off-by: Bernard Iremonger <bernard.iremonger@intel.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>
---
 Changes in v2:
 Rebased to latest dpdk-next-net
 revised commit message.
 add Fixes and Cc lines.

 app/test-pmd/cmdline.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
index f6bd75b78..a96b8b67c 100644
--- a/app/test-pmd/cmdline.c
+++ b/app/test-pmd/cmdline.c
@@ -1,7 +1,7 @@
 /*-
  *   BSD LICENSE
  *
- *   Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
+ *   Copyright(c) 2010-2017 Intel Corporation. All rights reserved.
  *   Copyright(c) 2014 6WIND S.A.
  *   All rights reserved.
  *
@@ -3036,6 +3036,7 @@ cmd_vlan_offload_parsed(void *parsed_result,
 	int i, len = 0;
 	portid_t port_id = 0;
 	unsigned int tmp;
+	struct rte_port *port;
 
 	str = res->port_id;
 	len = strnlen(str, STR_TOKEN_SIZE);
@@ -3053,6 +3054,7 @@ cmd_vlan_offload_parsed(void *parsed_result,
 	if(tmp >= RTE_MAX_ETHPORTS)
 		return;
 	port_id = (portid_t)tmp;
+	port = &ports[port_id];
 
 	if (!strcmp(res->on, "on"))
 		on = 1;
@@ -3079,9 +3081,13 @@ cmd_vlan_offload_parsed(void *parsed_result,
 	}
 	else if (!strcmp(res->what, "filter"))
 		rx_vlan_filter_set(port_id, on);
-	else
+	else {
+		if (port->port_status != RTE_PORT_STOPPED) {
+			printf("Please stop port %d first\n", port_id);
+			return;
+		}
 		vlan_extend_set(port_id, on);
-
+	}
 	return;
 }
 
-- 
2.11.0