[dpdk-dev] [PATCH 1/5] examples/l2fwd-event: free resources in case of error

[Muhammad Bilal]

Freeing the resources and call rte_eal_cleanup in case of error exit.
Signed-off-by: Muhammad Bilal <m.bilal at emumba.com>
---
 examples/l2fwd-event/main.c | 43 ++++++++++++++++++++++++++++++-------
 1 file changed, 35 insertions(+), 8 deletions(-)

diff --git a/examples/l2fwd-event/main.c b/examples/l2fwd-event/main.c
index 9593ef11e..442a664e9 100644
--- a/examples/l2fwd-event/main.c
+++ b/examples/l2fwd-event/main.c
@@ -556,13 +556,26 @@ signal_handler(int signum)
 	}
 }
 
+static void
+stop_and_close_eth_dev(uint16_t portid)
+{
+	RTE_ETH_FOREACH_DEV(portid) {
+		printf("Closing port %d...", portid);
+		rte_eth_dev_stop(portid);
+		rte_eth_dev_close(portid);
+		printf(" Done\n");
+	}
+	rte_eal_cleanup();
+}
+
 int
 main(int argc, char **argv)
 {
 	struct l2fwd_resources *rsrc;
 	uint16_t nb_ports_available = 0;
 	uint32_t nb_ports_in_mask = 0;
-	uint16_t port_id, last_port;
+	uint16_t port_id = 0;
+	uint16_t last_port;
 	uint32_t nb_mbufs;
 	uint16_t nb_ports;
 	int i, ret;
@@ -581,20 +594,26 @@ main(int argc, char **argv)
 
 	/* parse application arguments (after the EAL ones) */
 	ret = l2fwd_event_parse_args(argc, argv, rsrc);
-	if (ret < 0)
+	if (ret < 0) {
+		stop_and_close_eth_dev(port_id);
 		rte_panic("Invalid L2FWD arguments\n");
+	}
 
 	printf("MAC updating %s\n", rsrc->mac_updating ? "enabled" :
 			"disabled");
 
 	nb_ports = rte_eth_dev_count_avail();
-	if (nb_ports == 0)
+	if (nb_ports == 0) {
+		stop_and_close_eth_dev(port_id);
 		rte_panic("No Ethernet ports - bye\n");
+	}
 
 	/* check port mask to possible port mask */
-	if (rsrc->enabled_port_mask & ~((1 << nb_ports) - 1))
+	if (rsrc->enabled_port_mask & ~((1 << nb_ports) - 1)) {
+		stop_and_close_eth_dev(port_id);
 		rte_panic("Invalid portmask; possible (0x%x)\n",
 			(1 << nb_ports) - 1);
+	}
 
 	if (!rsrc->port_pairs) {
 		last_port = 0;
@@ -621,8 +640,10 @@ main(int argc, char **argv)
 			rsrc->dst_ports[last_port] = last_port;
 		}
 	} else {
-		if (check_port_pair_config(rsrc) < 0)
+		if (check_port_pair_config(rsrc) < 0) {
+			stop_and_close_eth_dev(port_id);
 			rte_panic("Invalid port pair config\n");
+		}
 	}
 
 	nb_mbufs = RTE_MAX(nb_ports * (RTE_TEST_RX_DESC_DEFAULT +
@@ -634,12 +655,16 @@ main(int argc, char **argv)
 	rsrc->pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool",
 			nb_mbufs, MEMPOOL_CACHE_SIZE, 0,
 			RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
-	if (rsrc->pktmbuf_pool == NULL)
+	if (rsrc->pktmbuf_pool == NULL) {
+		stop_and_close_eth_dev(port_id);
 		rte_panic("Cannot init mbuf pool\n");
+	}
 
 	nb_ports_available = l2fwd_event_init_ports(rsrc);
-	if (!nb_ports_available)
+	if (!nb_ports_available) {
+		stop_and_close_eth_dev(port_id);
 		rte_panic("All available ports are disabled. Please set portmask.\n");
+	}
 
 	/* Configure eventdev parameters if required */
 	if (rsrc->event_mode)
@@ -659,9 +684,11 @@ main(int argc, char **argv)
 			continue;
 
 		ret = rte_eth_dev_start(port_id);
-		if (ret < 0)
+		if (ret < 0) {
+			stop_and_close_eth_dev(port_id);
 			rte_panic("rte_eth_dev_start:err=%d, port=%u\n", ret,
 				  port_id);
+		}
 	}
 
 	if (rsrc->event_mode)
-- 
2.17.1