Alexey Dobriyan wrote:
Get netns from skb->dev on input, from skb->dst->dev on output to know
where to create or search for conntrack.
Is there some documentation re which device accessible from skb is valid
at which point?
For netfilter hooks, skb->dev points to the input device in
PREROUTING, INPUT, FORWARD, to the output device in POSTROUTING
and is invalid in OUTPUT.
@@ -626,10 +628,14 @@ resolve_normal_ct(struct sk_buff *skb,
return NULL;
}
+ dev = skb->dev;
+ if (!dev)
+ dev = skb->dst->dev;
+ net = dev_net(dev);
Maybe just pass it though nf_conntrack_in from the hook functions,
those get the devices as arguments.
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