NF_HOOK_COND      179 include/linux/netfilter.h NF_HOOK_COND(uint8_t pf, unsigned int hook, struct sk_buff *skb,
NF_HOOK_COND      297 include/linux/netfilter.h #define NF_HOOK_COND(pf, hook, skb, indev, outdev, okfn, cond) (okfn)(skb)