Re: [PATCH v5] app/testpmd: stop secondary process fwd_lcores during primary teardown

[Stephen Hemminger <stephen@networkplumber.org>]

On Wed, 17 Sep 2025 23:47:03 -0700
Khadem Ullah <14pwcse1224@uetpeshawar.edu.pk> wrote:

> @@ -3628,6 +3709,7 @@ pmd_test_exit(void)
>  		}
>  	}
>  #endif
> +
>  	if (ports != NULL) {
>  		no_link_check = 1;
>  		RTE_ETH_FOREACH_DEV(pt_id) {

I will drop that extra newline... Sorry

> +
> +static int
> +handle_testpmd_request(const struct rte_mp_msg *request, const void *peer)
> +{
> +	const struct testpmd_mp_req *req = (const struct testpmd_mp_req *)request->param;
> +
> +	if (req->t == TESTPMD_REQ_TYPE_EXIT) {
> +		printf("\nReceived notification of primary exiting\n");
> +		fflush(stdout);
> +
> +		/* Response is sent after forwarding loop exits */
> +		rte_atomic_store_explicit(&primary_name, peer, rte_memory_order_relaxed);
> +
> +		kill(getpid(), SIGINT);

Needed to use kill() here to force end of read when testpmd is in interactive mode.
Only other option would be closing stdin, but that seemed less safe.