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

[Rahul Bhansali]

Hi Kirill,

This patch is pending for review from long time.
Please do let me know if any comments on this patch, else will request to merge it.

Regards,
Rahul

> -----Original Message-----
> From: Rahul Bhansali
> Sent: Monday, May 15, 2023 4:29 PM
> To: 'Kirill Rybalchenko' <kirill.rybalchenko at intel.com>; Thomas Monjalon
> <thomas at monjalon.net>
> Cc: 'dev at dpdk.org' <dev at dpdk.org>
> Subject: RE: [PATCH] examples/ptpclient: add signal handler for cleanup
> 
> Ping.
> 
> > -----Original Message-----
> > From: Rahul Bhansali
> > Sent: Friday, January 20, 2023 11:26 AM
> > To: 'dev at dpdk.org' <dev at dpdk.org>; 'Kirill Rybalchenko'
> > <kirill.rybalchenko at intel.com>
> > Subject: RE: [PATCH] examples/ptpclient: add signal handler for
> > cleanup
> >
> > Ping.
> >
> > > -----Original Message-----
> > > From: Rahul Bhansali
> > > Sent: Wednesday, November 2, 2022 10:21 PM
> > > To: dev at dpdk.org; Kirill Rybalchenko <kirill.rybalchenko at intel.com>
> > > Subject: RE: [PATCH] examples/ptpclient: add signal handler for
> > > cleanup
> > >
> > > 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