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authorDavid Ahern <dsa@cumulusnetworks.com>2016-05-10 11:19:51 -0700
committerDavid S. Miller <davem@davemloft.net>2016-05-11 19:31:40 -0400
commit0b922b7a829c06e3b0790c58cd9ca026de86096e (patch)
treeb68c8a9b5148687c7bce7c6a5ab14e26a5c47050 /net/ipv4/ip_input.c
parentnet: l3mdev: Add hook in ip and ipv6 (diff)
downloadlinux-dev-0b922b7a829c06e3b0790c58cd9ca026de86096e.tar.xz
linux-dev-0b922b7a829c06e3b0790c58cd9ca026de86096e.zip
net: original ingress device index in PKTINFO
Applications such as OSPF and BFD need the original ingress device not the VRF device; the latter can be derived from the former. To that end add the skb_iif to inet_skb_parm and set it in ipv4 code after clearing the skb control buffer similar to IPv6. From there the pktinfo can just pull it from cb with the PKTINFO_SKB_CB cast. The previous patch moving the skb->dev change to L3 means nothing else is needed for IPv6; it just works. Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/ip_input.c')
-rw-r--r--net/ipv4/ip_input.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c
index 37375eedeef9..4b351af3e67b 100644
--- a/net/ipv4/ip_input.c
+++ b/net/ipv4/ip_input.c
@@ -478,6 +478,7 @@ int ip_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt,
/* Remove any debris in the socket control block */
memset(IPCB(skb), 0, sizeof(struct inet_skb_parm));
+ IPCB(skb)->iif = skb->skb_iif;
/* Must drop socket now because of tproxy. */
skb_orphan(skb);