[PATCH 2/2] examples/mp_server: warn on promisc enable failure

[mamcgove@microsoft.com]

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

Change to treat promiscuous enablement failures as nonfatal in the
client_mp/server_mp examples.

Some devices (mana) support promiscuous mode; but require
a cloud networking configuration change to enable it.

This change will allow examples/multi_process applications
to run in these environments.

Signed-off-by: Matthew G McGovern <mamcgove@microsoft.com>
---
 examples/multi_process/client_server_mp/mp_server/init.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

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;
-- 
2.34.1