master_tuple
struct nf_conntrack_tuple master_tuple;
exp->master_tuple = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple;
exp->master_tuple = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple;
if (ctnetlink_exp_dump_tuple(skb, &exp->master_tuple, CTA_EXPECT_MASTER) < 0)
nat_tuple.src.l3num = exp->master_tuple.src.l3num;
nat_tuple.dst.protonum = exp->master_tuple.dst.protonum;
exp->master_tuple = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple;
struct nf_conntrack_tuple tuple, mask, master_tuple;
err = ctnetlink_parse_tuple(cda, &master_tuple, CTA_EXPECT_MASTER,
h = nf_conntrack_find_get(net, zone, &master_tuple);
if (ctnetlink_dump_tuples(skb, master_tuple(ct)) < 0)