Description: backport of dpdk 16.04-rc1 fix for LP: #1559981

Forwarded: n/a (already upstream)
Author: Christian Ehrhardt <christian.ehrhardt@canonical.com>
Last-Update: 2016-03-20

From d3a274ce9dee28118b8647e0db72ef0f4b6a6323 Mon Sep 17 00:00:00 2001
From: Zhihong Wang <zhihong.wang@intel.com>
Date: Wed, 30 Dec 2015 16:59:49 -0500
Subject: [PATCH] app/testpmd: handle SIGINT and SIGTERM

Handle SIGINT and SIGTERM in testpmd.

Signed-off-by: Zhihong Wang <zhihong.wang@intel.com>
Acked-by: Michael Qiu <michael.qiu@intel.com>
---
 app/test-pmd/cmdline.c | 20 +++++++++++++-------
 app/test-pmd/testpmd.c | 39 +++++++++++++++++++++++++++++++++------
 app/test-pmd/testpmd.h |  1 +
 3 files changed, 47 insertions(+), 13 deletions(-)

Index: dpdk/app/test-pmd/cmdline.c
===================================================================
--- dpdk.orig/app/test-pmd/cmdline.c
+++ dpdk/app/test-pmd/cmdline.c
@@ -90,6 +90,8 @@
 
 #include "testpmd.h"
 
+static struct cmdline *testpmd_cl;
+
 static void cmd_reconfig_device_queue(portid_t id, uint8_t dev, uint8_t queue);
 
 #ifdef RTE_NIC_BYPASS
@@ -9778,17 +9780,21 @@ cmdline_parse_ctx_t main_ctx[] = {
 void
 prompt(void)
 {
-	struct cmdline *cl;
-
 	/* initialize non-constant commands */
 	cmd_set_fwd_mode_init();
 
-	cl = cmdline_stdin_new(main_ctx, "testpmd> ");
-	if (cl == NULL) {
+	testpmd_cl = cmdline_stdin_new(main_ctx, "testpmd> ");
+	if (testpmd_cl == NULL)
 		return;
-	}
-	cmdline_interact(cl);
-	cmdline_stdin_exit(cl);
+	cmdline_interact(testpmd_cl);
+	cmdline_stdin_exit(testpmd_cl);
+}
+
+void
+prompt_exit(void)
+{
+	if (testpmd_cl != NULL)
+		cmdline_quit(testpmd_cl);
 }
 
 static void
Index: dpdk/app/test-pmd/testpmd.c
===================================================================
--- dpdk.orig/app/test-pmd/testpmd.c
+++ dpdk/app/test-pmd/testpmd.c
@@ -1569,13 +1569,16 @@ pmd_test_exit(void)
 	if (test_done == 0)
 		stop_packet_forwarding();
 
-	FOREACH_PORT(pt_id, ports) {
-		printf("Stopping port %d...", pt_id);
-		fflush(stdout);
-		rte_eth_dev_close(pt_id);
-		printf("done\n");
+	if (ports != NULL) {
+		no_link_check = 1;
+		FOREACH_PORT(pt_id, ports) {
+			printf("\nShutting down port %d...\n", pt_id);
+			fflush(stdout);
+			stop_port(pt_id);
+			close_port(pt_id);
+		}
 	}
-	printf("bye...\n");
+	printf("\nBye...\n");
 }
 
 typedef void (*cmd_func_t)(void);
@@ -1983,12 +1986,35 @@ init_port(void)
 		ports[pid].enabled = 1;
 }
 
+static void
+force_quit(void)
+{
+	pmd_test_exit();
+	prompt_exit();
+}
+
+static void
+signal_handler(int signum)
+{
+	if (signum == SIGINT || signum == SIGTERM) {
+		printf("\nSignal %d received, preparing to exit...\n",
+				signum);
+		force_quit();
+		/* exit with the expected status */
+		signal(signum, SIG_DFL);
+		kill(getpid(), signum);
+	}
+}
+
 int
 main(int argc, char** argv)
 {
 	int  diag;
 	uint8_t port_id;
 
+	signal(SIGINT, signal_handler);
+	signal(SIGTERM, signal_handler);
+
 	diag = rte_eal_init(argc, argv);
 	if (diag < 0)
 		rte_panic("Cannot init EAL\n");
@@ -2040,6 +2066,7 @@ main(int argc, char** argv)
 		start_packet_forwarding(0);
 		printf("Press enter to exit\n");
 		rc = read(0, &c, 1);
+		pmd_test_exit();
 		if (rc < 0)
 			return 1;
 	}
Index: dpdk/app/test-pmd/testpmd.h
===================================================================
--- dpdk.orig/app/test-pmd/testpmd.h
+++ dpdk/app/test-pmd/testpmd.h
@@ -462,6 +462,7 @@ unsigned int parse_item_list(char* str,
 			unsigned int *parsed_items, int check_unique_values);
 void launch_args_parse(int argc, char** argv);
 void prompt(void);
+void prompt_exit(void);
 void nic_stats_display(portid_t port_id);
 void nic_stats_clear(portid_t port_id);
 void nic_xstats_display(portid_t port_id);