kni: fix deadlock in netif_receive_skb

Per netif_receive_skb function description, it may only be called from
interrupt contex, but KNI is run on kthread that like as user-space
context. It may occur deadlock, if netif_receive_skb called from kthread,
so it should be repleaced by netif_rx or adding local_bh_disable/enable
around netif_receive_skb.

Signed-off-by: Yao-Po Wang <blue119@gmail.com>
Acked-by: Alex Markuze <alex@weka.io>

diff --git a/lib/librte_eal/linuxapp/kni/kni_net.c b/lib/librte_eal/linuxapp/kni/kni_net.c
index d3c0190..28cc5ab 100644 (file)
--- a/lib/librte_eal/linuxapp/kni/kni_net.c
+++ b/lib/librte_eal/linuxapp/kni/kni_net.c
@@ -179,7 +179,7 @@ kni_net_rx_normal(struct kni_dev *kni)
                        skb->ip_summed = CHECKSUM_UNNECESSARY;
 
                        /* Call netif interface */
-                       netif_receive_skb(skb);
+                       netif_rx(skb);
 
                        /* Update statistics */
                        kni->stats.rx_bytes += len;