If available, use netif_receive_skb_finish() to asynchronously
return packets to the network input path after the point where
they were handed to us when the flow action is back_to_kernel.
Signed-off-by: Chris Luke <chris_l...@cable.comcast.com>
---
acinclude.m4 | 3 +++
datapath/vport-netdev.c | 6 +++++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/acinclude.m4 b/acinclude.m4
index 8ff5828..1dfb90b 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -291,6 +291,9 @@ AC_DEFUN([OVS_CHECK_LINUX_COMPAT], [
OVS_GREP_IFELSE([$KSRC/include/linux/openvswitch.h],
[openvswitch_handle_frame_hook],
[OVS_DEFINE([HAVE_RHEL_OVS_HOOK])])
+ OVS_GREP_IFELSE([$KSRC/include/linux/netdevice.h],
[netif_receive_skb_finish],
+ [OVS_DEFINE([HAVE_NETIF_RECEIVE_SKB_FINISH])])
+
OVS_CHECK_LOG2_H
if cmp -s datapath/linux/kcompat.h.new \
diff --git a/datapath/vport-netdev.c b/datapath/vport-netdev.c
index 196c851..0d09f82 100644
--- a/datapath/vport-netdev.c
+++ b/datapath/vport-netdev.c
@@ -291,7 +291,11 @@ static int netdev_insert(struct sk_buff *skb)
/* The skb will have gone when we want this later. */
len = skb->len;
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
+#ifdef HAVE_NETIF_RECEIVE_SKB_FINISH
+ /* Deliver to the lower-half of the network receive path. */
+ ret = netif_receive_skb_finish(skb);
+
+#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
#ifdef CONFIG_NET_CLS_ACT
/* This flag will skip the top half of the
* code in __netif_receive_skb(). */
--
1.7.9.5
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