[PATCH v2 2/2] app/testpmd:fix testpmd quit failure

[wenxuanx.wu@intel.com]

From: wenxuan wu <wenxuanx.wu@intel.com>

When testpmd start ed with 1 pf and 2 vfs, testpmd quited while vfs 
were still alive would result in failure. Root cause is that pf had
been released already but vfs were still accessing by func 
rte_eth_dev_info_get, which would result in heap-free-after-use error.

By quitting our ports in reverse order to avoid this.And the order is
guaranteed that vf are created after pfs.

Fixes: d3a274ce9dee ("app/testpmd: handle SIGINT and SIGTERM")
Cc: stable@dpdk.org

Signed-off-by: wenxuan wu <wenxuanx.wu@intel.com>
---
 app/test-pmd/testpmd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index e1da961311..698b6d8cc4 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -3384,12 +3384,12 @@ pmd_test_exit(void)
 #endif
 	if (ports != NULL) {
 		no_link_check = 1;
-		RTE_ETH_FOREACH_DEV(pt_id) {
+		RTE_ETH_FOREACH_DEV_REVERSE(pt_id) {
 			printf("\nStopping port %d...\n", pt_id);
 			fflush(stdout);
 			stop_port(pt_id);
 		}
-		RTE_ETH_FOREACH_DEV(pt_id) {
+		RTE_ETH_FOREACH_DEV_REVERSE(pt_id) {
 			printf("\nShutting down port %d...\n", pt_id);
 			fflush(stdout);
 			close_port(pt_id);
-- 
2.25.1