[PATCH v3 1/1] examples/mp_server: warn on promisc enable failure

[mamcgove at microsoft.com]

From: Matthew G McGovern <mamcgove at microsoft.com>

Problem: Some devices do not allow promiscuous mode.

Testpmd handles this by warning and ignoring failures from
rte_eth_promiscuous_enable.

Changes: make mp example apps warn if promiscuous mode cannot be
enabled, rather than failing.

Signed-off-by: Matthew G McGovern <mamcgove at microsoft.com>

---

v3:
* fix incorrect statement in v2 2/2 commit message
* squash small changes to a single commit

 examples/multi_process/client_server_mp/mp_server/init.c | 4 +++-
 examples/multi_process/symmetric_mp/main.c               | 4 +++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/examples/multi_process/client_server_mp/mp_server/init.c b/examples/multi_process/client_server_mp/mp_server/init.c
index 65713dbea8..87acc38101 100644
--- a/examples/multi_process/client_server_mp/mp_server/init.c
+++ b/examples/multi_process/client_server_mp/mp_server/init.c
@@ -134,7 +134,9 @@ init_port(uint16_t port_num)
 
 	retval = rte_eth_promiscuous_enable(port_num);
 	if (retval < 0)
-		return retval;
+		fprintf(stderr,
+			"Error during enabling promiscuous mode for port %u: %s - ignore\n",
+			retval, rte_strerror(-retval));
 
 	retval  = rte_eth_dev_start(port_num);
 	if (retval < 0) return retval;
diff --git a/examples/multi_process/symmetric_mp/main.c b/examples/multi_process/symmetric_mp/main.c
index f7d8439cd4..22ede756fd 100644
--- a/examples/multi_process/symmetric_mp/main.c
+++ b/examples/multi_process/symmetric_mp/main.c
@@ -275,7 +275,9 @@ smp_port_init(uint16_t port, struct rte_mempool *mbuf_pool,
 
 	retval = rte_eth_promiscuous_enable(port);
 	if (retval != 0)
-		return retval;
+		fprintf(stderr,
+			"Error during enabling promiscuous mode for port %u: %s - ignore\n",
+			retval, rte_strerror(-retval));
 
 	retval  = rte_eth_dev_start(port);
 	if (retval < 0)
-- 
2.34.1