nf_ct_ext_exist 64 include/net/netfilter/nf_conntrack_extend.h if (!nf_ct_ext_exist(ct, id)) nf_ct_ext_exist 612 net/netfilter/nf_conntrack_netlink.c if (!nf_ct_ext_exist(ct, NF_CT_EXT_ACCT)) nf_ct_ext_exist 639 net/netfilter/nf_conntrack_netlink.c if (!nf_ct_ext_exist(ct, NF_CT_EXT_TSTAMP)) nf_ct_ext_exist 104 net/netfilter/nft_flow_offload.c if (nf_ct_ext_exist(ct, NF_CT_EXT_HELPER) ||