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vrf: Increment Icmp6InMsgs on the original netdev

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Get the ingress interface and increment ICMP counters based on that
instead of skb->dev when the the dev is a VRF device.

This is a follow up on the following message:
https://www.spinics.net/lists/netdev/msg560268.html

v2: Avoid changing skb->dev since it has unintended effect for local
    delivery (David Ahern).
Signed-off-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stephen Suryaputra
2019-06-10 10:32:50 -04:00
committed by David S. Miller
parent f0d2ca1531
commit e1ae5c2ea4
3 changed files with 29 additions and 8 deletions
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16
include/net/addrconf.h
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@@ -309,6 +309,22 @@ static inline struct inet6_dev *__in6_dev_get(const struct net_device *dev)
return rcu_dereference_rtnl(dev->ip6_ptr);
}
/**
* __in6_dev_stats_get - get inet6_dev pointer for stats
* @dev: network device
* @skb: skb for original incoming interface if neeeded
*
* Caller must hold rcu_read_lock or RTNL, because this function
* does not take a reference on the inet6_dev.
*/
static inline struct inet6_dev *__in6_dev_stats_get(const struct net_device *dev,
const struct sk_buff *skb)
{
if (netif_is_l3_master(dev))
dev = dev_get_by_index_rcu(dev_net(dev), inet6_iif(skb));
return __in6_dev_get(dev);
}
/**
* __in6_dev_get_safely - get inet6_dev pointer from netdevice
* @dev: network device