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

[Rahul Bhansali]

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 <rbhans...@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