Laszlo Attila Toth wrote:
+static bool match_v1(const struct sk_buff *skb,
const struct net_device *in, const struct net_device *out,
const struct xt_match *match, const void *matchinfo,
int offset, unsigned int protoff, bool *hotdrop)
{
const struct ipt_addrtype_info *info = matchinfo;
const struct iphdr *iph = ip_hdr(skb);
+ const struct net_device *limit_dev = (info->flags & IPT_ADDRTYPE_LIMIT_IFACE) ? in : NULL;
The match can be used on any hook, using the incoming interface
is a bit unflexible. How about using the incoming interface for
src-address and outgoing interface for destination address matches?
Alternatively add two flags to specify which device to use. You'll
need to add proper checks of course to make sure the interface is
valid for the hook the match is used in.
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