[dpdk-dev] [PATCH 1/2] examples/l2fwd-event: validate function return values

[<pbhagavatula@marvell.com>]

From: Pavan Nikhilesh <pbhagavatula@marvell.com>

Validate `rte_eth_link_get_nowait`, `rte_service_map_lcore_set` and
`rte_eth_dev_info_get` return values.

Coverity issue: 350600
Coverity issue: 350601
Coverity issue: 350602

Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
 examples/l2fwd-event/l2fwd_common.c |  6 +++++-
 examples/l2fwd-event/l2fwd_event.c  |  7 ++++---
 examples/l2fwd-event/main.c         | 10 +++++++++-
 3 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/examples/l2fwd-event/l2fwd_common.c b/examples/l2fwd-event/l2fwd_common.c
index 4ba788550..0c069ec35 100644
--- a/examples/l2fwd-event/l2fwd_common.c
+++ b/examples/l2fwd-event/l2fwd_common.c
@@ -41,7 +41,11 @@ l2fwd_event_init_ports(struct l2fwd_resources *rsrc)
 		/* init port */
 		printf("Initializing port %u... ", port_id);
 		fflush(stdout);
-		rte_eth_dev_info_get(port_id, &dev_info);
+
+		ret = rte_eth_dev_info_get(port_id, &dev_info);
+		if (ret != 0)
+			rte_panic("Error during getting device (port %u) info: %s\n",
+				  port_id, strerror(-ret));
 		if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 			local_port_conf.txmode.offloads |=
 				DEV_TX_OFFLOAD_MBUF_FAST_FREE;
diff --git a/examples/l2fwd-event/l2fwd_event.c b/examples/l2fwd-event/l2fwd_event.c
index c7782cbc5..0379c580d 100644
--- a/examples/l2fwd-event/l2fwd_event.c
+++ b/examples/l2fwd-event/l2fwd_event.c
@@ -41,8 +41,9 @@ l2fwd_event_service_enable(uint32_t service_id)
 	/* Get the core which has least number of services running. */
 	while (slcore_count--) {
 		/* Reset default mapping */
-		rte_service_map_lcore_set(service_id,
-				slcore_array[slcore_count], 0);
+		if (rte_service_map_lcore_set(service_id,
+					slcore_array[slcore_count], 0) != 0)
+			return -ENOENT;
 		service_count = rte_service_lcore_count_services(
 				slcore_array[slcore_count]);
 		if (service_count < min_service_count) {
@@ -50,7 +51,7 @@ l2fwd_event_service_enable(uint32_t service_id)
 			min_service_count = service_count;
 		}
 	}
-	if (rte_service_map_lcore_set(service_id, slcore, 1))
+	if (rte_service_map_lcore_set(service_id, slcore, 1) != 0)
 		return -ENOENT;
 	rte_service_lcore_start(slcore);
 
diff --git a/examples/l2fwd-event/main.c b/examples/l2fwd-event/main.c
index 142c00e8f..89a6bb9a4 100644
--- a/examples/l2fwd-event/main.c
+++ b/examples/l2fwd-event/main.c
@@ -234,6 +234,7 @@ check_all_ports_link_status(struct l2fwd_resources *rsrc,
 	uint16_t port_id;
 	uint8_t count, all_ports_up, print_flag = 0;
 	struct rte_eth_link link;
+	int ret;
 
 	printf("\nChecking link status...");
 	fflush(stdout);
@@ -247,7 +248,14 @@ check_all_ports_link_status(struct l2fwd_resources *rsrc,
 			if ((port_mask & (1 << port_id)) == 0)
 				continue;
 			memset(&link, 0, sizeof(link));
-			rte_eth_link_get_nowait(port_id, &link);
+			ret = rte_eth_link_get_nowait(port_id, &link);
+			if (ret < 0) {
+				all_ports_up = 0;
+				if (print_flag == 1)
+					printf("Port %u link get failed: %s\n",
+						port_id, rte_strerror(-ret));
+				continue;
+			}
 			/* print link status if flag set */
 			if (print_flag == 1) {
 				if (link.link_status)
-- 
2.17.1