[PATCH v3 3/7] examples/l2fwd-crypto: add signal handler for exit

[Gagandeep Singh]

Handle SIGINT and SIGTERM signals.

Signed-off-by: Gagandeep Singh <g.singh at nxp.com>
---
 examples/l2fwd-crypto/main.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/examples/l2fwd-crypto/main.c b/examples/l2fwd-crypto/main.c
index b1e2613ccf..bf4b862379 100644
--- a/examples/l2fwd-crypto/main.c
+++ b/examples/l2fwd-crypto/main.c
@@ -18,6 +18,7 @@
 #include <getopt.h>
 #include <fcntl.h>
 #include <unistd.h>
+#include <signal.h>
 
 #include <rte_string_fns.h>
 #include <rte_branch_prediction.h>
@@ -256,6 +257,9 @@ struct l2fwd_crypto_statistics crypto_statistics[RTE_CRYPTO_MAX_DEVS];
 #define MAX_TIMER_PERIOD 86400UL /* 1 day max */
 #define DEFAULT_TIMER_PERIOD 10UL
 
+/* Global signal */
+static volatile bool signal_received;
+
 /* Print out statistics on packets dropped */
 static void
 print_stats(void)
@@ -922,6 +926,8 @@ l2fwd_main_loop(struct l2fwd_crypto_options *options)
 
 			nb_rx = rte_eth_rx_burst(portid, 0,
 						 pkts_burst, MAX_PKT_BURST);
+			if (unlikely(signal_received))
+				return;
 
 			port_statistics[portid].rx += nb_rx;
 
@@ -2760,6 +2766,13 @@ reserve_key_memory(struct l2fwd_crypto_options *options)
 	options->aad.phys_addr = rte_malloc_virt2iova(options->aad.data);
 }
 
+static void
+raise_signal(int signum)
+{
+	if (signum == SIGINT || signum == SIGTERM)
+		signal_received = true;
+}
+
 int
 main(int argc, char **argv)
 {
@@ -2772,6 +2785,9 @@ main(int argc, char **argv)
 	int ret, enabled_cdevcount, enabled_portcount;
 	uint8_t enabled_cdevs[RTE_CRYPTO_MAX_DEVS] = {0};
 
+	signal(SIGINT, raise_signal);
+	signal(SIGTERM, raise_signal);
+
 	/* init EAL */
 	ret = rte_eal_init(argc, argv);
 	if (ret < 0)
-- 
2.25.1