[PATCH] examples/ptpclient: add signal handler for cleanup

[Rahul Bhansali]

Ping.

> -----Original Message-----
> From: Rahul Bhansali <rbhansali at marvell.com>
> Sent: Wednesday, August 31, 2022 12:19 PM
> To: dev at dpdk.org; Kirill Rybalchenko <kirill.rybalchenko at intel.com>
> Cc: Rahul Bhansali <rbhansali at marvell.com>
> Subject: [PATCH] examples/ptpclient: add signal handler for cleanup
> 
> This adds the signal handler for SIGINT, SIGTERM.
> Also, this will come out from infinite loop and do cleanup once it receives any of
> the registered signal.
> 
> Signed-off-by: Rahul Bhansali <rbhansali at marvell.com>
> ---
>  examples/ptpclient/ptpclient.c | 32 ++++++++++++++++++++++++++++++--
>  1 file changed, 30 insertions(+), 2 deletions(-)
> 
> diff --git a/examples/ptpclient/ptpclient.c b/examples/ptpclient/ptpclient.c
> index 1f1c9c9c52..8b69716be1 100644
> --- a/examples/ptpclient/ptpclient.c
> +++ b/examples/ptpclient/ptpclient.c
> @@ -19,6 +19,9 @@
>  #include <limits.h>
>  #include <sys/time.h>
>  #include <getopt.h>
> +#include <signal.h>
> +
> +static volatile bool force_quit;
> 
>  #define RX_RING_SIZE 1024
>  #define TX_RING_SIZE 1024
> @@ -609,7 +612,7 @@ parse_ptp_frames(uint16_t portid, struct rte_mbuf *m)
> {
>   * The lcore main. This is the main thread that does the work, reading from an
>   * input port and writing to an output port.
>   */
> -static __rte_noreturn void
> +static void
>  lcore_main(void)
>  {
>  	uint16_t portid;
> @@ -621,7 +624,7 @@ lcore_main(void)
> 
>  	/* Run until the application is quit or killed. */
> 
> -	while (1) {
> +	while (!force_quit) {
>  		/* Read packet from RX queues. 8< */
>  		for (portid = 0; portid < ptp_enabled_port_nb; portid++) {
> 
> @@ -734,6 +737,13 @@ ptp_parse_args(int argc, char **argv)
>  	return 0;
>  }
> 
> +static void
> +signal_handler(int signum)
> +{
> +	if (signum == SIGINT || signum == SIGTERM)
> +		force_quit = true;
> +}
> +
>  /*
>   * The main function, which does initialization and calls the per-lcore
>   * functions.
> @@ -758,6 +768,10 @@ main(int argc, char *argv[])
>  	argc -= ret;
>  	argv += ret;
> 
> +	force_quit = false;
> +	signal(SIGINT, signal_handler);
> +	signal(SIGTERM, signal_handler);
> +
>  	ret = ptp_parse_args(argc, argv);
>  	if (ret < 0)
>  		rte_exit(EXIT_FAILURE, "Error with PTP initialization\n"); @@ -
> 802,6 +816,20 @@ main(int argc, char *argv[])
>  	/* Call lcore_main on the main core only. */
>  	lcore_main();
> 
> +	RTE_ETH_FOREACH_DEV(portid) {
> +		if ((ptp_enabled_port_mask & (1 << portid)) == 0)
> +			continue;
> +
> +		/* Disable timesync timestamping for the Ethernet device */
> +		rte_eth_timesync_disable(portid);
> +
> +		ret = rte_eth_dev_stop(portid);
> +		if (ret != 0)
> +			printf("rte_eth_dev_stop: err=%d, port=%d\n", ret,
> portid);
> +
> +		rte_eth_dev_close(portid);
> +	}
> +
>  	/* clean up the EAL */
>  	rte_eal_cleanup();
> 
> --
> 2.25.1