[dpdk-dev] [PATCH] fm10k: fix wrong Rx func is used

[Chen Jing D(Mark)]

From: "Chen Jing D(Mark)" <jing.d.chen at intel.com>

Steps to reproduce the bug:
1. All Rx offloading is disabled and start the device, then
   Vector Rx is used.
2. Stop the device. Re-configure to enable hw_ip_checksum = 1,
   start the device again.
3. In this case, assume regular Rx should be used since Vector
   Rx doesn't support ip checksum offload. But actually Vector
   Rx is used and cause checksum won't be done by hardware.

The reason is after re-configuring, driver misses an "else" in
func fm10k_set_rx_function(). Then Rx func in last round are
used.

Fixes:77a8ab47("fm10k: select best Rx function")

Reported-by: Xiao Wang <xiao.w.wang at intel.com>
Signed-off-by: Chen Jing D(Mark) <jing.d.chen at intel.com>
---
 drivers/net/fm10k/fm10k_ethdev.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/net/fm10k/fm10k_ethdev.c b/drivers/net/fm10k/fm10k_ethdev.c
index 4f23ce3..e4aed94 100644
--- a/drivers/net/fm10k/fm10k_ethdev.c
+++ b/drivers/net/fm10k/fm10k_ethdev.c
@@ -2486,6 +2486,8 @@ fm10k_set_rx_function(struct rte_eth_dev *dev)
 			dev->rx_pkt_burst = fm10k_recv_pkts_vec;
 	} else if (dev->data->scattered_rx)
 		dev->rx_pkt_burst = fm10k_recv_scattered_pkts;
+	else
+		dev->rx_pkt_burst = fm10k_recv_pkts;
 
 	rx_using_sse =
 		(dev->rx_pkt_burst == fm10k_recv_scattered_pkts_vec ||
-- 
1.7.7.6