[PATCH v2] app/testpmd: fix quit testpmd with vfs and pf

[Ferruh Yigit]

On 6/21/2022 10:24 AM, Ke Zhang wrote:
> 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 two steps:
> 1. Fetch the valid port value from RTE_ETH_FOREACH_DEV.
> 2. free the port in reverse order.
> 
> Fixes: 08fd782b8454 ("app/testpmd: fix quit to stop all ports before close")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Ke Zhang <ke1x.zhang at intel.com>

Acked-by: Aman Singh <aman.deep.singh at intel.com>
Acked-by: Ferruh Yigit <ferruh.yigit at xilinx.com>

Applied to dpdk-next-net/main, thanks.


> ---
>   app/test-pmd/testpmd.c | 26 +++++++++++++++++++++-----
>   1 file changed, 21 insertions(+), 5 deletions(-)
> 
> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
> index 04c39adc21..c01ecf7279 100644
> --- a/app/test-pmd/testpmd.c
> +++ b/app/test-pmd/testpmd.c
> @@ -3492,16 +3492,32 @@ pmd_test_exit(void)
>   	}
>   #endif
>   	if (ports != NULL) {
> +		portid_t ethports[RTE_MAX_ETHPORTS];
> +		int count = 0;
> +		int index = 0;
 >   		no_link_check = 1;

No need to initialize 'index'.

And better to have an empty line after deceleration block.

> +
> +		/* Fetch the valid port id from port list*/
>   		RTE_ETH_FOREACH_DEV(pt_id) {
> -			printf("\nStopping port %d...\n", pt_id);
> +			ethports[count] = pt_id;
> +			count++;
> +		}
> +
> +		/*
> +		 * Free the port from Reverse order, as general,
> +		 * PF port < VF port， VF should be free before PF
> +		 * be free.
> +		 */
> +		for (index = count - 1 ; index >= 0 ; index--) {

Space is not needed after ';'.


Since these are minor, I will fix while merging.