[PATCH 1/2] app/testpmd: fix quit testpmd with vfs and pf

[Zhang, Yuying]

Hi Wenxuan,

> -----Original Message-----
> From: Wu, WenxuanX <wenxuanx.wu at intel.com>
> Sent: Thursday, February 17, 2022 6:14 PM
> To: Yang, Qiming <qiming.yang at intel.com>; Zhang, Qi Z
> <qi.z.zhang at intel.com>; Li, Xiaoyun <xiaoyun.li at intel.com>; Singh, Aman Deep
> <aman.deep.singh at intel.com>; Zhang, Yuying <yuying.zhang at intel.com>
> Cc: dev at dpdk.org
> Subject: [PATCH 1/2] app/testpmd: fix quit testpmd with vfs and pf
> 
> From: wenxuan wu <wenxuanx.wu at intel.com>
> 
> When testpmd startups with pf and vfs,this error occurs when quitting, results in
> pf is released before vfs ,so the vf would access an freed heap memory.
> 
> The solution is that release our allocated ports in reverse order,add two macros
> RTE_ETH_FOREACH_DEV_REVERSE_OWNED_BY and
> RTE_ETH_FOREACH_DEV_REVERSE,which would be used in quit procedure of
> testpmd, error is fixed.
> 

Please correct grammatical errors and refine your commit log.

> Fixes: d3a274ce9dee ("app/testpmd: handle SIGINT and SIGTERM")
> Cc: stable at dpdk.org
> 
> Signed-off-by: wenxuan wu <wenxuanx.wu at 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