IPSET_EXT_SKBINFO   67 include/linux/netfilter/ipset/ip_set.h #define SET_WITH_SKBINFO(s)	((s)->extensions & IPSET_EXT_SKBINFO)
IPSET_EXT_SKBINFO  346 net/netfilter/ipset/ip_set_core.c 		.type	= IPSET_EXT_SKBINFO,