[PATCH 1/2] examples/symmetric-mp: ignore promisc enable failure

[mamcgove@microsoft.com]

From: Matthew G McGovern <mamcgove@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 symmetric-mp warn if promiscuous mode cannot be
enabled, rather than failing.

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

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