[dpdk-dev] [PATCH v2 11/13] kni: check code of promiscuous mode switch

[Andrew Rybchenko <arybchenko@solarflare.com>]

From: Ivan Ilchenko <Ivan.Ilchenko@oktetlabs.ru>

rte_eth_promiscuous_enable()/rte_eth_promiscuous_disable() return
value was changed from void to int, so modify usage of these
functions across lib/librte_kni according to new return type.

Signed-off-by: Ivan Ilchenko <Ivan.Ilchenko@oktetlabs.ru>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 app/test/test_kni.c      |  7 ++++++-
 examples/kni/main.c      |  9 +++++++--
 lib/librte_kni/rte_kni.c | 14 +++++++++++---
 3 files changed, 24 insertions(+), 6 deletions(-)

diff --git a/app/test/test_kni.c b/app/test/test_kni.c
index 2c333748db..e47ab36e02 100644
--- a/app/test/test_kni.c
+++ b/app/test/test_kni.c
@@ -601,7 +601,12 @@ test_kni(void)
 		printf("fail to start port %d\n", port_id);
 		return -1;
 	}
-	rte_eth_promiscuous_enable(port_id);
+	ret = rte_eth_promiscuous_enable(port_id);
+	if (ret != 0) {
+		printf("fail to enable promiscuous mode for port %d: %s\n",
+			port_id, rte_strerror(-ret));
+		return -1;
+	}
 
 	/* basic test of kni processing */
 	fd = fopen(KNI_MODULE_PARAM_LO, "r");
diff --git a/examples/kni/main.c b/examples/kni/main.c
index e43f174479..1069fd08bb 100644
--- a/examples/kni/main.c
+++ b/examples/kni/main.c
@@ -636,8 +636,13 @@ init_port(uint16_t port)
 		rte_exit(EXIT_FAILURE, "Could not start port%u (%d)\n",
 						(unsigned)port, ret);
 
-	if (promiscuous_on)
-		rte_eth_promiscuous_enable(port);
+	if (promiscuous_on) {
+		ret = rte_eth_promiscuous_enable(port);
+		if (ret != 0)
+			rte_exit(EXIT_FAILURE,
+				"Could not enable promiscuous mode for port%u: %s\n",
+				port, rte_strerror(-ret));
+	}
 }
 
 /* Check the link status of all ports in up to 9s, and print them finally */
diff --git a/lib/librte_kni/rte_kni.c b/lib/librte_kni/rte_kni.c
index 4b51fb4fed..04806ebb40 100644
--- a/lib/librte_kni/rte_kni.c
+++ b/lib/librte_kni/rte_kni.c
@@ -472,6 +472,8 @@ kni_config_mac_address(uint16_t port_id, uint8_t mac_addr[])
 static int
 kni_config_promiscusity(uint16_t port_id, uint8_t to_on)
 {
+	int ret;
+
 	if (!rte_eth_dev_is_valid_port(port_id)) {
 		RTE_LOG(ERR, KNI, "Invalid port id %d\n", port_id);
 		return -EINVAL;
@@ -481,11 +483,17 @@ kni_config_promiscusity(uint16_t port_id, uint8_t to_on)
 		port_id, to_on);
 
 	if (to_on)
-		rte_eth_promiscuous_enable(port_id);
+		ret = rte_eth_promiscuous_enable(port_id);
 	else
-		rte_eth_promiscuous_disable(port_id);
+		ret = rte_eth_promiscuous_disable(port_id);
 
-	return 0;
+	if (ret != 0)
+		RTE_LOG(ERR, KNI,
+			"Failed to %s promiscuous mode for port %u: %s\n",
+			to_on ? "enable" : "disable", port_id,
+			rte_strerror(-ret));
+
+	return ret;
 }
 
 int
-- 
2.17.1