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authorDavid Ahern <dsa@cumulusnetworks.com>2016-09-10 12:09:53 -0700
committerDavid S. Miller <davem@davemloft.net>2016-09-10 23:12:52 -0700
commita8e3e1a9f02094145580ea7920c6a1d9aabd5539 (patch)
tree1bedde4339e71fa07c4f73d27cfc807ec9220120 /net/ipv4/ip_output.c
parent9ee0034b8f49aaaa7e7c2da8db1038915db99c19 (diff)
downloadlinux-a8e3e1a9f02094145580ea7920c6a1d9aabd5539.tar.bz2
net: l3mdev: Add hook to output path
This patch adds the infrastructure to the output path to pass an skb to an l3mdev device if it has a hook registered. This is the Tx parallel to l3mdev_ip{6}_rcv in the receive path and is the basis for removing the existing hook that returns the vrf dst on the fib lookup. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_output.c')
-rw-r--r--net/ipv4/ip_output.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index b913f5bf0757..41e10e34769c 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -99,6 +99,14 @@ int __ip_local_out(struct net *net, struct sock *sk, struct sk_buff *skb)
iph->tot_len = htons(skb->len);
ip_send_check(iph);
+
+ /* if egress device is enslaved to an L3 master device pass the
+ * skb to its handler for processing
+ */
+ skb = l3mdev_ip_out(sk, skb);
+ if (unlikely(!skb))
+ return 0;
+
return nf_hook(NFPROTO_IPV4, NF_INET_LOCAL_OUT,
net, sk, skb, NULL, skb_dst(skb)->dev,
dst_output);