Checkpoint before compilation attempt

3 files changed, 395 insertions, 370 deletions

diff --git a/lib/Makefile.am b/lib/Makefile.am
index 9e5efd8..e31e594 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -29,7 +29,8 @@ libnl_nf_3_la_SOURCES = \
 	netfilter/ct.c netfilter/ct_obj.c netfilter/log.c \
 	netfilter/log_msg.c netfilter/log_msg_obj.c netfilter/log_obj.c \
 	netfilter/netfilter.c netfilter/nfnl.c netfilter/queue.c \
-	netfilter/queue_msg.c netfilter/queue_msg_obj.c netfilter/queue_obj.c
+	netfilter/queue_msg.c netfilter/queue_msg_obj.c netfilter/queue_obj.c \
+	netfilter/exp.c netfilter/exp_obj.c
 
 CLEANFILES = \
 	route/pktloc_grammar.c route/pktloc_grammar.h \
diff --git a/lib/netfilter/exp.c b/lib/netfilter/exp.c
index 59ee1d9..9e29c35 100644
--- a/lib/netfilter/exp.c
+++ b/lib/netfilter/exp.c
@@ -1,5 +1,5 @@
 /*
- * lib/netfilter/ct.c	Conntrack
+ * lib/netfilter/ct.c	Conntrack Expectation
  *
  *	This library is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Lesser General Public
@@ -14,7 +14,7 @@
 
 /**
  * @ingroup nfnl
- * @defgroup ct Conntrack
+ * @defgroup exp Expectation
  * @brief
  * @{
  */
@@ -26,9 +26,9 @@
 #include <netlink-local.h>
 #include <netlink/attr.h>
 #include <netlink/netfilter/nfnl.h>
-#include <netlink/netfilter/ct.h>
+#include <netlink/netfilter/exp.h>
 
-static struct nl_cache_ops nfnl_ct_ops;
+static struct nl_cache_ops nfnl_exp_ops;
 
 #if __BYTE_ORDER == __BIG_ENDIAN
 static uint64_t ntohll(uint64_t x)
@@ -42,35 +42,33 @@ static uint64_t ntohll(uint64_t x)
 }
 #endif
 
-static struct nla_policy ct_policy[CTA_MAX+1] = {
-	[CTA_TUPLE_ORIG]	= { .type = NLA_NESTED },
-	[CTA_TUPLE_REPLY]	= { .type = NLA_NESTED },
-	[CTA_STATUS]		= { .type = NLA_U32 },
-	[CTA_PROTOINFO]		= { .type = NLA_NESTED },
-	//[CTA_HELP]
-	//[CTA_NAT_SRC]
-	[CTA_TIMEOUT]		= { .type = NLA_U32 },
-	[CTA_MARK]		= { .type = NLA_U32 },
-	[CTA_COUNTERS_ORIG]	= { .type = NLA_NESTED },
-	[CTA_COUNTERS_REPLY]	= { .type = NLA_NESTED },
-	[CTA_USE]		= { .type = NLA_U32 },
-	[CTA_ID]		= { .type = NLA_U32 },
-	//[CTA_NAT_DST]
+static struct nla_policy exp_policy[CTA_EXPECT_MAX+1] = {
+	[CTA_EXPECT_MASTER]	    = { .type = NLA_NESTED },
+	[CTA_EXPECT_TUPLE]	    = { .type = NLA_NESTED },
+	[CTA_EXPECT_MASK]	    = { .type = NLA_NESTED },
+	[CTA_EXPECT_TIMEOUT]    = { .type = NLA_U32 },
+	[CTA_EXPECT_ID]		    = { .type = NLA_U32 },
+	[CTA_EXPECT_HELP_NAME]  = { .type = NLA_STRING },
+    //[CTA_EXPECT_ZONE]       = { .type = NLA_U16 },    // In latest kernel header
+    //[CTA_EXPECT_FLAGS]      = { .type = NLA_U32 },    // In latest kernel header
+	//[CTA_EXPECT_CLASS]      = { .type = NLA_U32 },    // In libnetfilter_conntrack include/linux/linux_nfnetlink_conntrack.h
+    //[CTA_EXPECT_NAT]        = { .type = NLA_NESTED }, // In libnetfilter_conntrack include/linux/linux_nfnetlink_conntrack.h
+    //[CTA_EXPECT_FN]         = { .type = NLA_STRING }, // In libnetfilter_conntrack include/linux/linux_nfnetlink_conntrack.h
 };
 
-static struct nla_policy ct_tuple_policy[CTA_TUPLE_MAX+1] = {
+static struct nla_policy exp_tuple_policy[CTA_TUPLE_MAX+1] = {
 	[CTA_TUPLE_IP]		= { .type = NLA_NESTED },
 	[CTA_TUPLE_PROTO]	= { .type = NLA_NESTED },
 };
 
-static struct nla_policy ct_ip_policy[CTA_IP_MAX+1] = {
+static struct nla_policy exp_ip_policy[CTA_IP_MAX+1] = {
 	[CTA_IP_V4_SRC]		= { .type = NLA_U32 },
 	[CTA_IP_V4_DST]		= { .type = NLA_U32 },
 	[CTA_IP_V6_SRC]		= { .minlen = 16 },
 	[CTA_IP_V6_DST]		= { .minlen = 16 },
 };
 
-static struct nla_policy ct_proto_policy[CTA_PROTO_MAX+1] = {
+static struct nla_policy exp_proto_policy[CTA_PROTO_MAX+1] = {
 	[CTA_PROTO_NUM]		= { .type = NLA_U8 },
 	[CTA_PROTO_SRC_PORT]	= { .type = NLA_U16 },
 	[CTA_PROTO_DST_PORT]	= { .type = NLA_U16 },
@@ -82,33 +80,14 @@ static struct nla_policy ct_proto_policy[CTA_PROTO_MAX+1] = {
 	[CTA_PROTO_ICMPV6_CODE]	= { .type = NLA_U8 },
 };
 
-static struct nla_policy ct_protoinfo_policy[CTA_PROTOINFO_MAX+1] = {
-	[CTA_PROTOINFO_TCP]	= { .type = NLA_NESTED },
-};
-
-static struct nla_policy ct_protoinfo_tcp_policy[CTA_PROTOINFO_TCP_MAX+1] = {
-	[CTA_PROTOINFO_TCP_STATE]		= { .type = NLA_U8 },
-	[CTA_PROTOINFO_TCP_WSCALE_ORIGINAL]	= { .type = NLA_U8 },
-	[CTA_PROTOINFO_TCP_WSCALE_REPLY]	= { .type = NLA_U8 },
-	[CTA_PROTOINFO_TCP_FLAGS_ORIGINAL]	= { .minlen = 2 },
-	[CTA_PROTOINFO_TCP_FLAGS_REPLY]		= { .minlen = 2 },
-
-};
 
-static struct nla_policy ct_counters_policy[CTA_COUNTERS_MAX+1] = {
-	[CTA_COUNTERS_PACKETS]	= { .type = NLA_U64 },
-	[CTA_COUNTERS_BYTES]	= { .type = NLA_U64 },
-	[CTA_COUNTERS32_PACKETS]= { .type = NLA_U32 },
-	[CTA_COUNTERS32_BYTES]	= { .type = NLA_U32 },
-};
-
-static int ct_parse_ip(struct nfnl_ct *ct, int repl, struct nlattr *attr)
+static int exp_parse_ip(struct nfnl_exp *exp, int tuple, struct nlattr *attr)
 {
 	struct nlattr *tb[CTA_IP_MAX+1];
 	struct nl_addr *addr;
 	int err;
 
-        err = nla_parse_nested(tb, CTA_IP_MAX, attr, ct_ip_policy);
+        err = nla_parse_nested(tb, CTA_IP_MAX, attr, exp_ip_policy);
 	if (err < 0)
 		goto errout;
 
@@ -116,7 +95,7 @@ static int ct_parse_ip(struct nfnl_ct *ct, int repl, struct nlattr *attr)
 		addr = nl_addr_alloc_attr(tb[CTA_IP_V4_SRC], AF_INET);
 		if (addr == NULL)
 			goto errout_enomem;
-		err = nfnl_ct_set_src(ct, repl, addr);
+		err = nfnl_exp_set_src(exp, tuple, addr);
 		nl_addr_put(addr);
 		if (err < 0)
 			goto errout;
@@ -125,7 +104,7 @@ static int ct_parse_ip(struct nfnl_ct *ct, int repl, struct nlattr *attr)
 		addr = nl_addr_alloc_attr(tb[CTA_IP_V4_DST], AF_INET);
 		if (addr == NULL)
 			goto errout_enomem;
-		err = nfnl_ct_set_dst(ct, repl, addr);
+		err = nfnl_exp_set_dst(exp, tuple, addr);
 		nl_addr_put(addr);
 		if (err < 0)
 			goto errout;
@@ -134,7 +113,7 @@ static int ct_parse_ip(struct nfnl_ct *ct, int repl, struct nlattr *attr)
 		addr = nl_addr_alloc_attr(tb[CTA_IP_V6_SRC], AF_INET6);
 		if (addr == NULL)
 			goto errout_enomem;
-		err = nfnl_ct_set_src(ct, repl, addr);
+		err = nfnl_exp_set_src(exp, tuple, addr);
 		nl_addr_put(addr);
 		if (err < 0)
 			goto errout;
@@ -143,7 +122,7 @@ static int ct_parse_ip(struct nfnl_ct *ct, int repl, struct nlattr *attr)
 		addr = nl_addr_alloc_attr(tb[CTA_IP_V6_DST], AF_INET6);
 		if (addr == NULL)
 			goto errout_enomem;
-		err = nfnl_ct_set_dst(ct, repl, addr);
+		err = nfnl_exp_set_dst(exp, tuple, addr);
 		nl_addr_put(addr);
 		if (err < 0)
 			goto errout;
@@ -157,89 +136,55 @@ errout:
 	return err;
 }
 
-static int ct_parse_proto(struct nfnl_ct *ct, int repl, struct nlattr *attr)
+static int exp_parse_proto(struct nfnl_exp *exp, int tuple, struct nlattr *attr)
 {
 	struct nlattr *tb[CTA_PROTO_MAX+1];
 	int err;
+	uint16_t srcport = 0, dstport = 0, icmpid = 0;
+	uint8_t icmptype = 0, icmpcode = 0;
 
-	err = nla_parse_nested(tb, CTA_PROTO_MAX, attr, ct_proto_policy);
+	err = nla_parse_nested(tb, CTA_PROTO_MAX, attr, exp_proto_policy);
 	if (err < 0)
 		return err;
 
-	if (!repl && tb[CTA_PROTO_NUM])
-		nfnl_ct_set_proto(ct, nla_get_u8(tb[CTA_PROTO_NUM]));
+	if (tb[CTA_PROTO_NUM])
+		nfnl_exp_set_l4protonum(exp, tuple, nla_get_u8(tb[CTA_PROTO_NUM]));
+
 	if (tb[CTA_PROTO_SRC_PORT])
-		nfnl_ct_set_src_port(ct, repl,
-			ntohs(nla_get_u16(tb[CTA_PROTO_SRC_PORT])));
+	    srcport = ntohs(nla_get_u16(tb[CTA_PROTO_SRC_PORT]));
 	if (tb[CTA_PROTO_DST_PORT])
-		nfnl_ct_set_dst_port(ct, repl,
-			ntohs(nla_get_u16(tb[CTA_PROTO_DST_PORT])));
+        dstport = ntohs(nla_get_u16(tb[CTA_PROTO_DST_PORT]));
+	if (tb[CTA_PROTO_SRC_PORT] || tb[CTA_PROTO_DST_PORT])
+        nfnl_exp_set_ports(exp, tuple, srcport, dstport);
+
 	if (tb[CTA_PROTO_ICMP_ID])
-		nfnl_ct_set_icmp_id(ct, repl,
-			ntohs(nla_get_u16(tb[CTA_PROTO_ICMP_ID])));
+	    icmpid = ntohs(nla_get_u16(tb[CTA_PROTO_ICMP_ID]));
 	if (tb[CTA_PROTO_ICMP_TYPE])
-		nfnl_ct_set_icmp_type(ct, repl,
-				nla_get_u8(tb[CTA_PROTO_ICMP_TYPE]));
+		icmptype = nla_get_u8(tb[CTA_PROTO_ICMP_TYPE]);
 	if (tb[CTA_PROTO_ICMP_CODE])
-		nfnl_ct_set_icmp_code(ct, repl,
-				nla_get_u8(tb[CTA_PROTO_ICMP_CODE]));
-
+		icmpcode = nla_get_u8(tb[CTA_PROTO_ICMP_CODE]);
+	if (tb[CTA_PROTO_ICMP_ID] || tb[CTA_PROTO_ICMP_TYPE] || tb[CTA_PROTO_ICMP_CODE])
+	    nfnl_exp_set_icmp(exp, tuple, icmpid, icmptype, icmpcode);
 	return 0;
 }
 
-static int ct_parse_tuple(struct nfnl_ct *ct, int repl, struct nlattr *attr)
+static int exp_parse_tuple(struct nfnl_exp *exp, int tuple, struct nlattr *attr)
 {
 	struct nlattr *tb[CTA_TUPLE_MAX+1];
 	int err;
 
-	err = nla_parse_nested(tb, CTA_TUPLE_MAX, attr, ct_tuple_policy);
+	err = nla_parse_nested(tb, CTA_TUPLE_MAX, attr, exp_tuple_policy);
 	if (err < 0)
 		return err;
 
 	if (tb[CTA_TUPLE_IP]) {
-		err = ct_parse_ip(ct, repl, tb[CTA_TUPLE_IP]);
+		err = exp_parse_ip(exp, tuple, tb[CTA_TUPLE_IP]);
 		if (err < 0)
 			return err;
 	}
 
 	if (tb[CTA_TUPLE_PROTO]) {
-		err = ct_parse_proto(ct, repl, tb[CTA_TUPLE_PROTO]);
-		if (err < 0)
-			return err;
-	}
-
-	return 0;
-}
-
-static int ct_parse_protoinfo_tcp(struct nfnl_ct *ct, struct nlattr *attr)
-{
-	struct nlattr *tb[CTA_PROTOINFO_TCP_MAX+1];
-	int err;
-
-	err = nla_parse_nested(tb, CTA_PROTOINFO_TCP_MAX, attr,
-			       ct_protoinfo_tcp_policy);
-	if (err < 0)
-		return err;
-
-	if (tb[CTA_PROTOINFO_TCP_STATE])
-		nfnl_ct_set_tcp_state(ct,
-				nla_get_u8(tb[CTA_PROTOINFO_TCP_STATE]));
-
-	return 0;
-}
-
-static int ct_parse_protoinfo(struct nfnl_ct *ct, struct nlattr *attr)
-{
-	struct nlattr *tb[CTA_PROTOINFO_MAX+1];
-	int err;
-
-	err = nla_parse_nested(tb, CTA_PROTOINFO_MAX, attr,
-			       ct_protoinfo_policy);
-	if (err < 0)
-		return err;
-
-	if (tb[CTA_PROTOINFO_TCP]) {
-		err = ct_parse_protoinfo_tcp(ct, tb[CTA_PROTOINFO_TCP]);
+		err = exp_parse_proto(exp, tuple, tb[CTA_TUPLE_PROTO]);
 		if (err < 0)
 			return err;
 	}
@@ -247,149 +192,132 @@ static int ct_parse_protoinfo(struct nfnl_ct *ct, struct nlattr *attr)
 	return 0;
 }
 
-static int ct_parse_counters(struct nfnl_ct *ct, int repl, struct nlattr *attr)
-{
-	struct nlattr *tb[CTA_COUNTERS_MAX+1];
-	int err;
-
-	err = nla_parse_nested(tb, CTA_COUNTERS_MAX, attr, ct_counters_policy);
-	if (err < 0)
-		return err;
-
-	if (tb[CTA_COUNTERS_PACKETS])
-		nfnl_ct_set_packets(ct, repl,
-			ntohll(nla_get_u64(tb[CTA_COUNTERS_PACKETS])));
-	if (tb[CTA_COUNTERS32_PACKETS])
-		nfnl_ct_set_packets(ct, repl,
-			ntohl(nla_get_u32(tb[CTA_COUNTERS32_PACKETS])));
-	if (tb[CTA_COUNTERS_BYTES])
-		nfnl_ct_set_bytes(ct, repl,
-			ntohll(nla_get_u64(tb[CTA_COUNTERS_BYTES])));
-	if (tb[CTA_COUNTERS32_BYTES])
-		nfnl_ct_set_bytes(ct, repl,
-			ntohl(nla_get_u32(tb[CTA_COUNTERS32_BYTES])));
-
-	return 0;
-}
-
-int nfnlmsg_ct_group(struct nlmsghdr *nlh)
+int nfnlmsg_exp_group(struct nlmsghdr *nlh)
 {
 	switch (nfnlmsg_subtype(nlh)) {
-	case IPCTNL_MSG_CT_NEW:
+	case IPCTNL_MSG_EXP_NEW:
 		if (nlh->nlmsg_flags & (NLM_F_CREATE|NLM_F_EXCL))
-			return NFNLGRP_CONNTRACK_NEW;
+			return NFNLGRP_CONNTRACK_EXP_NEW;
 		else
-			return NFNLGRP_CONNTRACK_UPDATE;
-	case IPCTNL_MSG_CT_DELETE:
-		return NFNLGRP_CONNTRACK_DESTROY;
+			return NFNLGRP_CONNTRACK_EXP_UPDATE;
+	case IPCTNL_MSG_EXP_DELETE:
+		return NFNLGRP_CONNTRACK_EXP_DESTROY;
 	default:
 		return NFNLGRP_NONE;
 	}
 }
 
-int nfnlmsg_ct_parse(struct nlmsghdr *nlh, struct nfnl_ct **result)
+int nfnlmsg_exp_parse(struct nlmsghdr *nlh, struct nfnl_exp **result)
 {
-	struct nfnl_ct *ct;
+	struct nfnl_exp *exp;
 	struct nlattr *tb[CTA_MAX+1];
 	int err;
 
-	ct = nfnl_ct_alloc();
-	if (!ct)
+	exp = nfnl_exp_alloc();
+	if (!exp)
 		return -NLE_NOMEM;
 
-	ct->ce_msgtype = nlh->nlmsg_type;
+	exp->ce_msgtype = nlh->nlmsg_type;
 
-	err = nlmsg_parse(nlh, sizeof(struct nfgenmsg), tb, CTA_MAX,
-			  ct_policy);
+	err = nlmsg_parse(nlh, sizeof(struct nfgenmsg), tb, CTA_EXPECT_MAX,
+			  exp_policy);
 	if (err < 0)
 		goto errout;
 
-	nfnl_ct_set_family(ct, nfnlmsg_family(nlh));
-
-	if (tb[CTA_TUPLE_ORIG]) {
-		err = ct_parse_tuple(ct, 0, tb[CTA_TUPLE_ORIG]);
-		if (err < 0)
-			goto errout;
-	}
-	if (tb[CTA_TUPLE_REPLY]) {
-		err = ct_parse_tuple(ct, 1, tb[CTA_TUPLE_REPLY]);
-		if (err < 0)
-			goto errout;
-	}
+	nfnl_exp_set_family(exp, nfnlmsg_family(nlh));
 
-	if (tb[CTA_PROTOINFO]) {
-		err = ct_parse_protoinfo(ct, tb[CTA_PROTOINFO]);
+	if (tb[CTA_EXPECT_TUPLE]) {
+        err = exp_parse_tuple(exp, NFNL_EXP_TUPLE_EXPECT, tb[CTA_EXPECT_TUPLE]);
+        if (err < 0)
+            goto errout;
+    }
+	if (tb[CTA_EXPECT_MASTER]) {
+		err = exp_parse_tuple(exp, NFNL_EXP_TUPLE_MASTER, tb[CTA_EXPECT_MASTER]);
 		if (err < 0)
 			goto errout;
 	}
-
-	if (tb[CTA_STATUS])
-		nfnl_ct_set_status(ct, ntohl(nla_get_u32(tb[CTA_STATUS])));
-	if (tb[CTA_TIMEOUT])
-		nfnl_ct_set_timeout(ct, ntohl(nla_get_u32(tb[CTA_TIMEOUT])));
-	if (tb[CTA_MARK])
-		nfnl_ct_set_mark(ct, ntohl(nla_get_u32(tb[CTA_MARK])));
-	if (tb[CTA_USE])
-		nfnl_ct_set_use(ct, ntohl(nla_get_u32(tb[CTA_USE])));
-	if (tb[CTA_ID])
-		nfnl_ct_set_id(ct, ntohl(nla_get_u32(tb[CTA_ID])));
-
-	if (tb[CTA_COUNTERS_ORIG]) {
-		err = ct_parse_counters(ct, 0, tb[CTA_COUNTERS_ORIG]);
+	if (tb[CTA_EXPECT_MASK]) {
+		err = exp_parse_tuple(exp, NFNL_EXP_TUPLE_MASK, tb[CTA_EXPECT_MASK]);
 		if (err < 0)
 			goto errout;
 	}
 
-	if (tb[CTA_COUNTERS_REPLY]) {
-		err = ct_parse_counters(ct, 1, tb[CTA_COUNTERS_REPLY]);
-		if (err < 0)
-			goto errout;
-	}
+	if (tb[CTA_EXPECT_TIMEOUT])
+		nfnl_exp_set_timeout(exp, ntohl(nla_get_u32(tb[CTA_EXPECT_TIMEOUT])));
+	if (tb[CTA_EXPECT_ID])
+		nfnl_exp_set_id(exp, ntohl(nla_get_u32(tb[CTA_EXPECT_ID])));
+    if (tb[CTA_EXPECT_HELP_NAME])
+        nfnl_exp_set_helper_name(exp, nla_data(tb[CTA_EXPECT_HELP_NAME]));
 
-	*result = ct;
+	*result = exp;
 	return 0;
 
 errout:
-	nfnl_ct_put(ct);
+	nfnl_exp_put(exp);
 	return err;
 }
 
-static int ct_msg_parser(struct nl_cache_ops *ops, struct sockaddr_nl *who,
+static int exp_msg_parser(struct nl_cache_ops *ops, struct sockaddr_nl *who,
 			 struct nlmsghdr *nlh, struct nl_parser_param *pp)
 {
-	struct nfnl_ct *ct;
+	struct nfnl_exp *exp;
 	int err;
 
-	if ((err = nfnlmsg_ct_parse(nlh, &ct)) < 0)
+	if ((err = nfnlmsg_exp_parse(nlh, &exp)) < 0)
 		goto errout;
 
-	err = pp->pp_cb((struct nl_object *) ct, pp);
+	err = pp->pp_cb((struct nl_object *) exp, pp);
 errout:
-	nfnl_ct_put(ct);
+	nfnl_exp_put(exp);
 	return err;
 }
 
-int nfnl_ct_dump_request(struct nl_sock *sk)
+int nfnl_exp_dump_request(struct nl_sock *sk)
 {
-	return nfnl_send_simple(sk, NFNL_SUBSYS_CTNETLINK, IPCTNL_MSG_CT_GET,
+	return nfnl_send_simple(sk, NFNL_SUBSYS_CTNETLINK_EXP, IPCTNL_MSG_EXP_GET,
 				NLM_F_DUMP, AF_UNSPEC, 0);
 }
 
-static int ct_request_update(struct nl_cache *cache, struct nl_sock *sk)
+static int exp_request_update(struct nl_cache *cache, struct nl_sock *sk)
+{
+	return nfnl_exp_dump_request(sk);
+}
+
+static int exp_get_tuple_attr(int tuple)
 {
-	return nfnl_ct_dump_request(sk);
+    int attr = 0;
+
+    switch (tuple) {
+        case NFNL_EXP_TUPLE_MASTER:
+            attr = CTA_EXPECT_MASTER;
+            break;
+        case NFNL_EXP_TUPLE_MASK:
+            attr = CTA_EXPECT_MASK;
+            break;
+        //case NFNL_EXP_TUPLE_NAT:
+        //    attr = EXP_ATTR_NAT_L4PROTO_NUM;
+        //    break;
+        case NFNL_EXP_TUPLE_EXPECT:
+        default :
+            attr = CTA_EXPECT_TUPLE;
+            break;
+    }
+
+    return attr;
 }
 
-static int nfnl_ct_build_tuple(struct nl_msg *msg, const struct nfnl_ct *ct,
-			       int repl)
+static int nfnl_exp_build_tuple(struct nl_msg *msg, const struct nfnl_exp *exp,
+			       int type)
 {
 	struct nlattr *tuple, *ip, *proto;
 	struct nl_addr *addr;
 	int family;
 
-	family = nfnl_ct_get_family(ct);
+	int tupattr = exp_get_tuple_attr(type);
 
-	tuple = nla_nest_start(msg, repl ? CTA_TUPLE_REPLY : CTA_TUPLE_ORIG);
+	family = nfnl_exp_get_family(exp);
+
+	tuple = nla_nest_start(msg, tupattr);
 	if (!tuple)
 		goto nla_put_failure;
 
@@ -397,13 +325,13 @@ static int nfnl_ct_build_tuple(struct nl_msg *msg, const struct nfnl_ct *ct,
 	if (!ip)
 		goto nla_put_failure;
 
-	addr = nfnl_ct_get_src(ct, repl);
+	addr = nfnl_exp_get_src(exp, type);
 	if (addr)
 		NLA_PUT_ADDR(msg,
 			     family == AF_INET ? CTA_IP_V4_SRC : CTA_IP_V6_SRC,
 			     addr);
 
-	addr = nfnl_ct_get_dst(ct, repl);
+	addr = nfnl_exp_get_dst(exp, type);
 	if (addr)
 		NLA_PUT_ADDR(msg,
 			     family == AF_INET ? CTA_IP_V4_DST : CTA_IP_V6_DST,
@@ -415,28 +343,27 @@ static int nfnl_ct_build_tuple(struct nl_msg *msg, const struct nfnl_ct *ct,
 	if (!proto)
 		goto nla_put_failure;
 
-	if (nfnl_ct_test_proto(ct))
-		NLA_PUT_U8(msg, CTA_PROTO_NUM, nfnl_ct_get_proto(ct));
+	if (nfnl_exp_test_l4protonum(exp, type))
+		NLA_PUT_U8(msg, CTA_PROTO_NUM, nfnl_exp_get_l4protonum(exp, type));
 
-	if (nfnl_ct_test_src_port(ct, repl))
+	if (nfnl_exp_test_ports(exp, type)) {
 		NLA_PUT_U16(msg, CTA_PROTO_SRC_PORT,
-			htons(nfnl_ct_get_src_port(ct, repl)));
+			htons(nfnl_exp_get_src_port(exp, type)));
 
-	if (nfnl_ct_test_dst_port(ct, repl))
 		NLA_PUT_U16(msg, CTA_PROTO_DST_PORT,
-			htons(nfnl_ct_get_dst_port(ct, repl)));
+			htons(nfnl_exp_get_dst_port(exp, type)));
+	}
 
-	if (nfnl_ct_test_icmp_id(ct, repl))
+	if (nfnl_exp_test_icmp(exp, type)) {
 		NLA_PUT_U16(msg, CTA_PROTO_ICMP_ID,
-			htons(nfnl_ct_get_icmp_id(ct, repl)));
+			htons(nfnl_exp_get_icmp_id(exp, type)));
 
-	if (nfnl_ct_test_icmp_type(ct, repl))
 		NLA_PUT_U8(msg, CTA_PROTO_ICMP_TYPE,
-			    nfnl_ct_get_icmp_type(ct, repl));
+			    nfnl_exp_get_icmp_type(exp, type));
 
-	if (nfnl_ct_test_icmp_code(ct, repl))
 		NLA_PUT_U8(msg, CTA_PROTO_ICMP_CODE,
-			    nfnl_ct_get_icmp_code(ct, repl));
+			    nfnl_exp_get_icmp_code(exp, type));
+	}
 
 	nla_nest_end(msg, proto);
 
@@ -447,20 +374,36 @@ nla_put_failure:
 	return -NLE_MSGSIZE;
 }
 
-static int nfnl_ct_build_message(const struct nfnl_ct *ct, int cmd, int flags,
+static int nfnl_exp_build_message(const struct nfnl_exp *exp, int cmd, int flags,
 				 struct nl_msg **result)
 {
 	struct nl_msg *msg;
 	int err;
 
-	msg = nfnlmsg_alloc_simple(NFNL_SUBSYS_CTNETLINK, cmd, flags,
-				   nfnl_ct_get_family(ct), 0);
+	msg = nfnlmsg_alloc_simple(NFNL_SUBSYS_CTNETLINK_EXP, cmd, flags,
+				   nfnl_exp_get_family(exp), 0);
 	if (msg == NULL)
 		return -NLE_NOMEM;
 
-	if ((err = nfnl_ct_build_tuple(msg, ct, 0)) < 0)
+	if ((err = nfnl_exp_build_tuple(msg, exp, CTA_EXPECT_TUPLE)) < 0)
 		goto err_out;
 
+    if ((err = nfnl_exp_build_tuple(msg, exp, CTA_EXPECT_MASTER)) < 0)
+        goto err_out;
+
+    if ((err = nfnl_exp_build_tuple(msg, exp, CTA_EXPECT_MASK)) < 0)
+        goto err_out;
+
+    // FIXME timeout and helper name
+    if (nfnl_exp_test_id(exp))
+        NLA_PUT_U32(msg, CTA_EXPECT_ID, htonl(nfnl_exp_get_id(exp)));
+
+    if (nfnl_exp_test_timeout(exp))
+        NLA_PUT_U32(msg, CTA_EXPECT_TIMEOUT, htonl(nfnl_exp_get_timeout(exp)));
+
+    if (nfnl_exp_test_helper_name(exp))
+        NLA_PUT_STRING(msg, CTA_EXPECT_HELP_NAME, nfnl_exp_get_helper_name(exp));
+
 	*result = msg;
 	return 0;
 
@@ -469,18 +412,18 @@ err_out:
 	return err;
 }
 
-int nfnl_ct_build_add_request(const struct nfnl_ct *ct, int flags,
+int nfnl_exp_build_add_request(const struct nfnl_exp *exp, int flags,
 			      struct nl_msg **result)
 {
-	return nfnl_ct_build_message(ct, IPCTNL_MSG_CT_NEW, flags, result);
+	return nfnl_exp_build_message(exp, IPCTNL_MSG_EXP_NEW, flags, result);
 }
 
-int nfnl_ct_add(struct nl_sock *sk, const struct nfnl_ct *ct, int flags)
+int nfnl_exp_add(struct nl_sock *sk, const struct nfnl_exp *exp, int flags)
 {
 	struct nl_msg *msg;
 	int err;
 
-	if ((err = nfnl_ct_build_add_request(ct, flags, &msg)) < 0)
+	if ((err = nfnl_exp_build_add_request(exp, flags, &msg)) < 0)
 		return err;
 
 	err = nl_send_auto_complete(sk, msg);
@@ -491,18 +434,18 @@ int nfnl_ct_add(struct nl_sock *sk, const struct nfnl_ct *ct, int flags)
 	return wait_for_ack(sk);
 }
 
-int nfnl_ct_build_delete_request(const struct nfnl_ct *ct, int flags,
+int nfnl_exp_build_delete_request(const struct nfnl_exp *exp, int flags,
 				 struct nl_msg **result)
 {
-	return nfnl_ct_build_message(ct, IPCTNL_MSG_CT_DELETE, flags, result);
+	return nfnl_exp_build_message(exp, IPCTNL_MSG_EXP_DELETE, flags, result);
 }
 
-int nfnl_ct_del(struct nl_sock *sk, const struct nfnl_ct *ct, int flags)
+int nfnl_exp_del(struct nl_sock *sk, const struct nfnl_exp *exp, int flags)
 {
 	struct nl_msg *msg;
 	int err;
 
-	if ((err = nfnl_ct_build_delete_request(ct, flags, &msg)) < 0)
+	if ((err = nfnl_exp_build_delete_request(exp, flags, &msg)) < 0)
 		return err;
 
 	err = nl_send_auto_complete(sk, msg);
@@ -513,18 +456,18 @@ int nfnl_ct_del(struct nl_sock *sk, const struct nfnl_ct *ct, int flags)
 	return wait_for_ack(sk);
 }
 
-int nfnl_ct_build_query_request(const struct nfnl_ct *ct, int flags,
+int nfnl_exp_build_query_request(const struct nfnl_exp *exp, int flags,
 				struct nl_msg **result)
 {
-	return nfnl_ct_build_message(ct, IPCTNL_MSG_CT_GET, flags, result);
+	return nfnl_exp_build_message(exp, IPCTNL_MSG_EXP_GET, flags, result);
 }
 
-int nfnl_ct_query(struct nl_sock *sk, const struct nfnl_ct *ct, int flags)
+int nfnl_exp_query(struct nl_sock *sk, const struct nfnl_exp *exp, int flags)
 {
 	struct nl_msg *msg;
 	int err;
 
-	if ((err = nfnl_ct_build_query_request(ct, flags, &msg)) < 0)
+	if ((err = nfnl_exp_build_query_request(exp, flags, &msg)) < 0)
 		return err;
 
 	err = nl_send_auto_complete(sk, msg);
@@ -541,61 +484,61 @@ int nfnl_ct_query(struct nl_sock *sk, const struct nfnl_ct *ct, int flags)
  */
 
 /**
- * Build a conntrack cache holding all conntrack currently in the kernel
+ * Build a expectation cache holding all expectations currently in the kernel
  * @arg sk		Netlink socket.
  * @arg result		Pointer to store resulting cache.
  *
  * Allocates a new cache, initializes it properly and updates it to
- * contain all conntracks currently in the kernel.
+ * contain all expectations currently in the kernel.
  *
  * @return 0 on success or a negative error code.
  */
-int nfnl_ct_alloc_cache(struct nl_sock *sk, struct nl_cache **result)
+int nfnl_exp_alloc_cache(struct nl_sock *sk, struct nl_cache **result)
 {
-	return nl_cache_alloc_and_fill(&nfnl_ct_ops, sk, result);
+	return nl_cache_alloc_and_fill(&nfnl_exp_ops, sk, result);
 }
 
 /** @} */
 
 /**
- * @name Conntrack Addition
+ * @name Expectation Addition
  * @{
  */
 
 /** @} */
 
-static struct nl_af_group ct_groups[] = {
-	{ AF_UNSPEC, NFNLGRP_CONNTRACK_NEW },
-	{ AF_UNSPEC, NFNLGRP_CONNTRACK_UPDATE },
-	{ AF_UNSPEC, NFNLGRP_CONNTRACK_DESTROY },
+static struct nl_af_group exp_groups[] = {
+	{ AF_UNSPEC, NFNLGRP_CONNTRACK_EXP_NEW },
+	{ AF_UNSPEC, NFNLGRP_CONNTRACK_EXP_UPDATE },
+	{ AF_UNSPEC, NFNLGRP_CONNTRACK_EXP_DESTROY },
 	{ END_OF_GROUP_LIST },
 };
 
-#define NFNLMSG_CT_TYPE(type) NFNLMSG_TYPE(NFNL_SUBSYS_CTNETLINK, (type))
-static struct nl_cache_ops nfnl_ct_ops = {
-	.co_name		= "netfilter/ct",
+#define NFNLMSG_EXP_TYPE(type) NFNLMSG_TYPE(NFNL_SUBSYS_CTNETLINK_EXP, (type))
+static struct nl_cache_ops nfnl_exp_ops = {
+	.co_name		= "netfilter/exp",
 	.co_hdrsize		= NFNL_HDRLEN,
 	.co_msgtypes		= {
-		{ NFNLMSG_CT_TYPE(IPCTNL_MSG_CT_NEW), NL_ACT_NEW, "new" },
-		{ NFNLMSG_CT_TYPE(IPCTNL_MSG_CT_GET), NL_ACT_GET, "get" },
-		{ NFNLMSG_CT_TYPE(IPCTNL_MSG_CT_DELETE), NL_ACT_DEL, "del" },
+		{ NFNLMSG_CT_TYPE(IPCTNL_MSG_EXP_NEW), NL_ACT_NEW, "new" },
+		{ NFNLMSG_CT_TYPE(IPCTNL_MSG_EXP_GET), NL_ACT_GET, "get" },
+		{ NFNLMSG_CT_TYPE(IPCTNL_MSG_EXP_DELETE), NL_ACT_DEL, "del" },
 		END_OF_MSGTYPES_LIST,
 	},
 	.co_protocol		= NETLINK_NETFILTER,
-	.co_groups		= ct_groups,
-	.co_request_update	= ct_request_update,
-	.co_msg_parser		= ct_msg_parser,
-	.co_obj_ops		= &ct_obj_ops,
+	.co_groups		= exp_groups,
+	.co_request_update	= exp_request_update,
+	.co_msg_parser		= exp_msg_parser,
+	.co_obj_ops		= &exp_obj_ops,
 };
 
-static void __init ct_init(void)
+static void __init exp_init(void)
 {
-	nl_cache_mngt_register(&nfnl_ct_ops);
+	nl_cache_mngt_register(&nfnl_exp_ops);
 }
 
-static void __exit ct_exit(void)
+static void __exit exp_exit(void)
 {
-	nl_cache_mngt_unregister(&nfnl_ct_ops);
+	nl_cache_mngt_unregister(&nfnl_exp_ops);
 }
 
 /** @} */
diff --git a/lib/netfilter/exp_obj.c b/lib/netfilter/exp_obj.c
index 2a45f3e..160c939 100644
--- a/lib/netfilter/exp_obj.c
+++ b/lib/netfilter/exp_obj.c
@@ -33,9 +33,9 @@
 #define EXP_ATTR_ID	                   (1UL << 2) // 32-bit
 #define EXP_ATTR_HELPER_NAME          (1UL << 3) // string (16 bytes max)
 #define EXP_ATTR_ZONE                 (1UL << 4) // 16-bit
-#define EXP_ATTR_CLASS                (1UL << 5) // 32-bit
+#define EXP_ATTR_CLASS                (1UL << 5) // 32-bit ???
 #define EXP_ATTR_FLAGS                (1UL << 6) // 32-bit
-#define EXP_ATTR_FN                   (1UL << 7) // String
+#define EXP_ATTR_FN                   (1UL << 7) // String ???
 
 // Tuples
 #define EXP_ATTR_EXPECT_IP_SRC        (1UL << 8)
@@ -59,7 +59,7 @@
 #define EXP_ATTR_NAT_L4PROTO_PORTS    (1UL << 26)
 #define EXP_ATTR_NAT_L4PROTO_ICMP     (1UL << 27)
 
-#define EXP_ATTR_NAT_DIR              (1UL << 28)
+#define EXP_ATTR_NAT_DIR              (1UL << 28) // 8-bit
 /** @endcond */
 
 static void exp_free_data(struct nl_object *c)
@@ -150,7 +150,7 @@ static int exp_clone(struct nl_object *_dst, struct nl_object *_src)
     }
 
     if (src->exp_fn)
-        dst->exp_fn = strdup(src->exp_fn)
+        dst->exp_fn = strdup(src->exp_fn);
 
     if (src->exp_helper_name)
         dst->exp_helper_name = strdup(src->exp_helper_name);
@@ -171,23 +171,26 @@ static void dump_addr(struct nl_dump_params *p, struct nl_addr *addr, int port)
 		nl_dump(p, " ");
 }
 
-static void dump_icmp(struct nl_dump_params *p, struct nfnl_ct *ct, int tuple)
+static void dump_icmp(struct nl_dump_params *p, struct nfnl_exp *exp, int tuple)
 {
-	nl_dump(p, "icmp type %d ", nfnl_exp_get_icmp_type(ct, tuple));
+	if (nfnl_exp_test_icmp(exp, tuple)) {
 
-	nl_dump(p, "code %d ", nfnl_exp_get_icmp_code(ct, tuple));
+        nl_dump(p, "icmp type %d ", nfnl_exp_get_icmp_type(exp, tuple));
 
-	nl_dump(p, "id %d ", nfnl_exp_get_icmp_id(ct, tuple));
+        nl_dump(p, "code %d ", nfnl_exp_get_icmp_code(exp, tuple));
+
+        nl_dump(p, "id %d ", nfnl_exp_get_icmp_id(exp, tuple));
+    }
 }
 
-static void ct_dump_tuples(struct nfnl_exp *exp, struct nl_dump_params *p)
+static void exp_dump_tuples(struct nfnl_exp *exp, struct nl_dump_params *p)
 {
 	struct nl_addr *tuple_src, *tuple_dst;
 	int tuple_sport = 0, tuple_dport = 0;
-	int i = NFNL_EXP_TUPLE_EXPECT;
-	int icmp = 0;
+	int i = 0;
+    char buf[64];
 
-	for (i; i <= NFNL_EXP_TUPLE_NAT; i++) {
+	for (i = NFNL_EXP_TUPLE_EXPECT; i <= NFNL_EXP_TUPLE_NAT; i++) {
 
         // Test needed for NAT case
 	    if (nfnl_exp_test_src(exp, i))
@@ -196,65 +199,68 @@ static void ct_dump_tuples(struct nfnl_exp *exp, struct nl_dump_params *p)
             tuple_dst = nfnl_exp_get_dst(exp, i);
 
         // Don't have tests for individual ports/types/codes/ids,
-        // just test L4 Proto.  Ugly, but can't do much else without
-        // more mask bits
-
-        if (nfnl_exp_test_l4proto(exp, i)) {
-            int l4proto = nfnl_exp_get_l4proto(exp, i);
-            if ( !(l4proto == IPPROTO_ICMP ||
-                   l4proto == IPPROTO_ICMPV6) ) {
-                tuple_sport = nfnl_exp_get_src_port(exp, i);
-                tuple_dport = nfnl_exp_get_dst_port(exp, i);
-            } else {
-                icmp = 1;
-            }
+        if (nfnl_exp_test_l4protonum(exp)) {
+            nl_dump(p, "%s ",
+              nl_ip_proto2str(nfnl_exp_get_l4protonum(exp), buf, sizeof(buf)));
+        }
+
+        if (nfnl_exp_test_ports(exp, i)) {
+            tuple_sport = nfnl_exp_get_src_port(exp, i);
+            tuple_dport = nfnl_exp_get_dst_port(exp, i);
         }
         dump_addr(p, tuple_src, tuple_sport);
         dump_addr(p, tuple_dst, tuple_dport);
-        if (icmp)
-            dump_icmp(p, exp, 0);
+        dump_icmp(p, exp, 0);
     }
+
+    if (nfnl_exp_test_nat_dir(exp))
+        nl_dump(p, "nat dir %s ", exp->exp_nat_dir);
+
 }
 
-/* Compatible with /proc/net/nf_conntrack */
-static void ct_dump_line(struct nl_object *a, struct nl_dump_params *p)
+/* FIXME Compatible with /proc/net/nf_conntrack */
+static void exp_dump_line(struct nl_object *a, struct nl_dump_params *p)
 {
-	struct nfnl_ct *ct = (struct nfnl_ct *) a;
-	char buf[64];
+	struct nfnl_exp *exp = (struct nfnl_exp *) a;
 
 	nl_new_line(p);
 
-	if (nfnl_ct_test_proto(ct))
-		nl_dump(p, "%s ",
-		  nl_ip_proto2str(nfnl_ct_get_proto(ct), buf, sizeof(buf)));
-
-	ct_dump_tuples(ct, p);
+	exp_dump_tuples(exp, p);
 
 	nl_dump(p, "\n");
 }
 
-static void ct_dump_details(struct nl_object *a, struct nl_dump_params *p)
+static void exp_dump_details(struct nl_object *a, struct nl_dump_params *p)
 {
-	struct nfnl_ct *ct = (struct nfnl_ct *) a;
+	struct nfnl_exp *exp = (struct nfnl_exp *) a;
 	char buf[64];
 	int fp = 0;
 
 	ct_dump_line(a, p);
 
-	nl_dump(p, "    id 0x%x ", ct->ct_id);
+	nl_dump(p, "    id 0x%x ", exp->exp_id);
 	nl_dump_line(p, "family %s ",
-		nl_af2str(ct->ct_family, buf, sizeof(buf)));
-
-	if (nfnl_ct_test_use(ct))
-		nl_dump(p, "refcnt %u ", nfnl_ct_get_use(ct));
+		nl_af2str(exp->exp_family, buf, sizeof(buf)));
 
-	if (nfnl_ct_test_timeout(ct)) {
-		uint64_t timeout_ms = nfnl_ct_get_timeout(ct) * 1000UL;
+	if (nfnl_exp_test_timeout(exp)) {
+		uint64_t timeout_ms = nfnl_ct_get_timeout(exp) * 1000UL;
 		nl_dump(p, "timeout %s ",
 			nl_msec2str(timeout_ms, buf, sizeof(buf)));
 	}
 
-	if (ct->ct_status)
+    if (nfnl_exp_test_helper_name(exp))
+        nl_dump(p, "helper %s ", exp->exp_helper_name);
+
+    if (nfnl_exp_test_fn(exp))
+        nl_dump(p, "fn %s ", exp->exp_fn);
+
+    if (nfnl_exp_test_zone(exp))
+        nl_dump(p, "zone %u ", nfnl_exp_get_zone(exp));
+
+    if (nfnl_exp_test_class(exp))
+        nl_dump(p, "class %u ", nfnl_exp_get_class(exp));
+
+	if (nfnl_exp_test_flags(exp))
 		nl_dump(p, "<");
 
 #define PRINT_FLAG(str) \
@@ -268,7 +274,7 @@ static void ct_dump_details(struct nl_object *a, struct nl_dump_params *p)
 		PRINT_FLAG("USERSPACE");
 #undef PRINT_FLAG
 
-	if (exp->exp_flags)
+	if (nfnl_exp_test_flags(exp))
 		nl_dump(p, ">");
 	nl_dump(p, "\n");
 }
@@ -360,23 +366,23 @@ static int exp_compare(struct nl_object *_a, struct nl_object *_b,
         diff |= EXP_DIFF_L4PROTO_PORTS(EXPECT_L4PROTO_PORTS, exp_expect.proto.l4protodata.port);
         diff |= EXP_DIFF_L4PROTO_ICMP(EXPECT_L4PROTO_ICMP, exp_expect.proto.l4protodata.icmp);
 
-        diff |= EXP_DIFF_ADDR(MASTER_IP_SRC,           exp_master.src);
-        diff |= EXP_DIFF_ADDR(MASTER_IP_DST,           exp_master.dst);
+        diff |= EXP_DIFF_ADDR(MASTER_IP_SRC,     exp_master.src);
+        diff |= EXP_DIFF_ADDR(MASTER_IP_DST,     exp_master.dst);
         diff |= EXP_DIFF_VAL(MASTER_L4PROTO_NUM, exp_master.proto.l4protonum);
         diff |= EXP_DIFF_L4PROTO_PORTS(MASTER_L4PROTO_PORTS, exp_master.proto.l4protodata.port);
-        diff |= EXP_DIFF_L4PROTO_ICMP(MASTER_L4PROTO_ICMP, exp_master.proto.l4protodata.icmp);
+        diff |= EXP_DIFF_L4PROTO_ICMP(MASTER_L4PROTO_ICMP,   exp_master.proto.l4protodata.icmp);
 
-        diff |= EXP_DIFF_ADDR(MASK_IP_SRC,             exp_mask.src);
-        diff |= EXP_DIFF_ADDR(MASK_IP_DST,             exp_mask.dst);
+        diff |= EXP_DIFF_ADDR(MASK_IP_SRC,       exp_mask.src);
+        diff |= EXP_DIFF_ADDR(MASK_IP_DST,       exp_mask.dst);
         diff |= EXP_DIFF_VAL(MASK_L4PROTO_NUM,   exp_mask.proto.l4protonum);
         diff |= EXP_DIFF_L4PROTO_PORTS(MASK_L4PROTO_PORTS, exp_mask.proto.l4protodata.port);
-        diff |= EXP_DIFF_L4PROTO_ICMP(MASK_L4PROTO_ICMP, exp_mask.proto.l4protodata.icmp);
+        diff |= EXP_DIFF_L4PROTO_ICMP(MASK_L4PROTO_ICMP,   exp_mask.proto.l4protodata.icmp);
 
-        diff |= EXP_DIFF_ADDR(NAT_IP_SRC,              exp_nat.src);
-        diff |= EXP_DIFF_ADDR(NAT_IP_DST,              exp_nat.dst);
+        diff |= EXP_DIFF_ADDR(NAT_IP_SRC,        exp_nat.src);
+        diff |= EXP_DIFF_ADDR(NAT_IP_DST,        exp_nat.dst);
         diff |= EXP_DIFF_VAL(NAT_L4PROTO_NUM,    exp_nat.proto.l4protonum);
         diff |= EXP_DIFF_L4PROTO_PORTS(NAT_L4PROTO_PORTS, exp_nat.proto.l4protodata.port);
-        diff |= EXP_DIFF_L4PROTO_ICMP(NAT_L4PROTO_ICMP, exp_nat.proto.l4protodata.icmp);
+        diff |= EXP_DIFF_L4PROTO_ICMP(NAT_L4PROTO_ICMP,   exp_nat.proto.l4protodata.icmp);
 
 #undef EXP_DIFF
 #undef EXP_DIFF_VAL
@@ -390,35 +396,35 @@ static int exp_compare(struct nl_object *_a, struct nl_object *_b,
 
 // CLI arguments?
 static const struct trans_tbl exp_attrs[] = {
-    __ADD(EXP_ATTR_FAMILY,              family)
-    __ADD(EXP_ATTR_TIMEOUT,             timeout)
-    __ADD(EXP_ATTR_ID,                  id)
-    __ADD(EXP_ATTR_HELPER_NAME,         helpername)
-    __ADD(EXP_ATTR_ZONE,                zone)
-    __ADD(EXP_ATTR_CLASS,               class)
-    __ADD(EXP_ATTR_FLAGS,               flags)
-    __ADD(EXP_ATTR_FN,                  function)
-    __ADD(EXP_ATTR_EXPECT_IP_SRC,       expectipsrc)
-    __ADD(EXP_ATTR_EXPECT_IP_DST,       expectipdst)
-    __ADD(EXP_ATTR_EXPECT_L4PROTO_NUM,  expectprotonum)
-    __ADD(EXP_ATTR_EXPECT_L4PROTO_PORTS,expectports)
-    __ADD(EXP_ATTR_EXPECT_L4PROTO_ICMP ,expecticmp)
-    __ADD(EXP_ATTR_MASTER_IP_SRC,       masteripsrc)
-    __ADD(EXP_ATTR_MASTER_IP_DST,       masteripdst)
-    __ADD(EXP_ATTR_MASTER_L4PROTO_NUM,  masterprotonum)
-    __ADD(EXP_ATTR_MASTER_L4PROTO_PORTS,masterports)
-    __ADD(EXP_ATTR_MASTER_L4PROTO_ICMP ,mastericmp)
-    __ADD(EXP_ATTR_MASK_IP_SRC,         maskipsrc)
-    __ADD(EXP_ATTR_MASK_IP_DST,         maskipdst)
-    __ADD(EXP_ATTR_MASK_L4PROTO_NUM,    maskprotonum)
-    __ADD(EXP_ATTR_MASK_L4PROTO_PORTS,  maskports)
-    __ADD(EXP_ATTR_MASK_L4PROTO_ICMP ,  maskicmp)
-    __ADD(EXP_ATTR_NAT_IP_SRC,          natipsrc)
-    __ADD(EXP_ATTR_NAT_IP_DST,          natipdst)
-    __ADD(EXP_ATTR_NAT_L4PROTO_NUM,     natprotonum)
-    __ADD(EXP_ATTR_NAT_L4PROTO_PORTS,   natports)
-    __ADD(EXP_ATTR_NAT_L4PROTO_ICMP,    naticmp)
-    __ADD(EXP_ATTR_NAT_DIR,             natdir)
+    __ADD(EXP_ATTR_FAMILY,               family)
+    __ADD(EXP_ATTR_TIMEOUT,              timeout)
+    __ADD(EXP_ATTR_ID,                   id)
+    __ADD(EXP_ATTR_HELPER_NAME,          helpername)
+    __ADD(EXP_ATTR_ZONE,                 zone)
+    __ADD(EXP_ATTR_CLASS,                class)
+    __ADD(EXP_ATTR_FLAGS,                flags)
+    __ADD(EXP_ATTR_FN,                   function)
+    __ADD(EXP_ATTR_EXPECT_IP_SRC,        expectipsrc)
+    __ADD(EXP_ATTR_EXPECT_IP_DST,        expectipdst)
+    __ADD(EXP_ATTR_EXPECT_L4PROTO_NUM,   expectprotonum)
+    __ADD(EXP_ATTR_EXPECT_L4PROTO_PORTS, expectports)
+    __ADD(EXP_ATTR_EXPECT_L4PROTO_ICMP , expecticmp)
+    __ADD(EXP_ATTR_MASTER_IP_SRC,        masteripsrc)
+    __ADD(EXP_ATTR_MASTER_IP_DST,        masteripdst)
+    __ADD(EXP_ATTR_MASTER_L4PROTO_NUM,   masterprotonum)
+    __ADD(EXP_ATTR_MASTER_L4PROTO_PORTS, masterports)
+    __ADD(EXP_ATTR_MASTER_L4PROTO_ICMP , mastericmp)
+    __ADD(EXP_ATTR_MASK_IP_SRC,          maskipsrc)
+    __ADD(EXP_ATTR_MASK_IP_DST,          maskipdst)
+    __ADD(EXP_ATTR_MASK_L4PROTO_NUM,     maskprotonum)
+    __ADD(EXP_ATTR_MASK_L4PROTO_PORTS,   maskports)
+    __ADD(EXP_ATTR_MASK_L4PROTO_ICMP ,   maskicmp)
+    __ADD(EXP_ATTR_NAT_IP_SRC,           natipsrc)
+    __ADD(EXP_ATTR_NAT_IP_DST,           natipdst)
+    __ADD(EXP_ATTR_NAT_L4PROTO_NUM,      natprotonum)
+    __ADD(EXP_ATTR_NAT_L4PROTO_PORTS,    natports)
+    __ADD(EXP_ATTR_NAT_L4PROTO_ICMP,     naticmp)
+    __ADD(EXP_ATTR_NAT_DIR,              natdir)
 };
 
 static char *exp_attrs2str(int attrs, char *buf, size_t len)
@@ -533,6 +539,112 @@ uint32_t nfnl_exp_get_id(const struct nfnl_exp *exp)
 	return exp->exp_id;
 }
 
+int  nfnl_exp_set_helper_name(struct nfnl_exp *exp, void *name)
+{
+    free(exp->exp_helper_name);
+    exp->exp_helper_name = strdup(name);
+    if (!exp->exp_helper_name)
+        return -NLE_NOMEM;
+
+    exp->ce_mask |= EXP_ATTR_HELPER_NAME;
+    return 0;
+}
+
+int  nfnl_exp_test_helper_name(const struct nfnl_exp *exp)
+{
+    return !!(exp->ce_mask & EXP_ATTR_HELPER_NAME);
+}
+
+const char * nfnl_exp_get_helper_name(const struct nfnl_exp *exp)
+{
+    return exp->exp_helper_name;
+}
+
+void nfnl_exp_set_zone(struct nfnl_exp *exp, uint16_t zone)
+{
+    exp->exp_zone = zone;
+    exp->ce_mask |= EXP_ATTR_ZONE;
+}
+
+int nfnl_exp_test_zone(const struct nfnl_exp *exp)
+{
+    return !!(exp->ce_mask & EXP_ATTR_ZONE);
+}
+
+uint16_t nfnl_exp_get_zone(const struct nfnl_exp *exp)
+{
+    return exp->exp_zone;
+}
+
+void nfnl_exp_set_class(struct nfnl_exp *exp, uint32_t class)
+{
+    exp->exp_class = class;
+    exp->ce_mask |= EXP_ATTR_CLASS;
+}
+
+int nfnl_exp_test_class(const struct nfnl_exp *exp)
+{
+    return !!(exp->ce_mask & EXP_ATTR_CLASS);
+}
+
+uint32_t nfnl_exp_get_class(const struct nfnl_exp *exp)
+{
+    return exp->exp_class;
+}
+
+void nfnl_exp_set_flags(struct nfnl_exp *exp, uint32_t flags)
+{
+    exp->exp_flags = flags;
+    exp->ce_mask |= EXP_ATTR_FLAGS;
+}
+
+int nfnl_exp_test_flags(const struct nfnl_exp *exp)
+{
+    return !!(exp->ce_mask & EXP_ATTR_FLAGS);
+}
+
+uint32_t nfnl_exp_get_flags(const struct nfnl_exp *exp)
+{
+    return exp->exp_flags;
+}
+
+int nfnl_exp_set_fn(struct nfnl_exp *exp, void *fn)
+{
+    free(exp->exp_fn);
+    exp->exp_fn = strdup(fn);
+    if (!exp->exp_fn)
+        return -NLE_NOMEM;
+
+    exp->ce_mask |= EXP_ATTR_FN;
+    return 0;
+}
+
+int nfnl_exp_test_fn(const struct nfnl_exp *exp)
+{
+    return !!(exp->ce_mask & EXP_ATTR_FN);
+}
+
+const char * nfnl_exp_get_fn(const struct nfnl_exp *exp)
+{
+    return exp->exp_fn;
+}
+
+void nfnl_exp_set_nat_dir(struct nfnl_exp *exp, uint8_t nat_dir)
+{
+    exp->exp_nat_dir = nat_dir;
+    exp->ce_mask |= EXP_ATTR_NAT_DIR;
+}
+
+int nfnl_exp_test_nat_dir(const struct nfnl_exp *exp)
+{
+    return !!(exp->ce_mask & EXP_ATTR_NAT_DIR);
+}
+
+uint8_t nfnl_exp_get_nat_dir(const struct nfnl_exp *exp)
+{
+    return exp->exp_nat_dir;
+}
+
 static struct nfnl_exp_dir *exp_get_dir(struct nfnl_exp *exp, int tuple)
 {
     struct nfnl_exp_dir *dir = NULL;
@@ -729,7 +841,7 @@ static int exp_get_l4ports_attr(int tuple)
     return attr;
 }
 
-void nfnl_exp_set_src_ports(struct nfnl_exp *exp, int tuple, uint16_t srcport, uint16_t dstport)
+void nfnl_exp_set_ports(struct nfnl_exp *exp, int tuple, uint16_t srcport, uint16_t dstport)
 {
 	struct nfnl_exp_dir *dir = exp_get_dir(exp, tuple);
 
@@ -780,7 +892,7 @@ static int exp_get_l4icmp_attr(int tuple)
     return attr;
 }
 
-void nfnl_ct_set_icmp(struct nfnl_exp *exp, int tuple, uint16_t id, uint8_t type, uint8_t, code)
+void nfnl_exp_set_icmp(struct nfnl_exp *exp, int tuple, uint16_t id, uint8_t type, uint8_t, code)
 {
 	struct nfnl_exp_dir *dir = exp_get_dir(exp, tuple);
 
@@ -791,61 +903,31 @@ void nfnl_ct_set_icmp(struct nfnl_exp *exp, int tuple, uint16_t id, uint8_t type
 	exp->ce_mask |= exp_get_l4icmp_attr(tuple);
 }
 
-int nfnl_ct_test_icmp_id(const struct nfnl_ct *ct, int repl)
+int nfnl_exp_test_icmp(const struct nfnl_exp *exp, int tuple)
 {
-	int attr = repl ? CT_ATTR_REPL_ICMP_ID : CT_ATTR_ORIG_ICMP_ID;
-	return !!(ct->ce_mask & attr);
+	int attr = exp_get_l4icmp_attr(tuple);
+	return !!(exp->ce_mask & attr);
 }
 
-uint16_t nfnl_ct_get_icmp_id(const struct nfnl_ct *ct, int repl)
+uint16_t nfnl_exp_get_icmp_id(const struct nfnl_exp *exp, int tuple)
 {
-	const struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
-
-	return dir->proto.icmp.id;
-}
-
-void nfnl_ct_set_icmp_type(struct nfnl_ct *ct, int repl, uint8_t type)
-{
-	struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
-	int attr = repl ? CT_ATTR_REPL_ICMP_TYPE : CT_ATTR_ORIG_ICMP_TYPE;
-
-	dir->proto.icmp.type = type;
-	ct->ce_mask |= attr;
-}
-
-int nfnl_ct_test_icmp_type(const struct nfnl_ct *ct, int repl)
-{
-	int attr = repl ? CT_ATTR_REPL_ICMP_TYPE : CT_ATTR_ORIG_ICMP_TYPE;
-	return !!(ct->ce_mask & attr);
-}
-
-uint8_t nfnl_ct_get_icmp_type(const struct nfnl_ct *ct, int repl)
-{
-	const struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
+	const struct nfnl_exp_dir *dir = exp_get_dir(exp, tuple);
 
-	return dir->proto.icmp.type;
+	return dir->proto.l4protodata.icmp.id;
 }
 
-void nfnl_ct_set_icmp_code(struct nfnl_ct *ct, int repl, uint8_t code)
+uint8_t nfnl_exp_get_icmp_type(const struct nfnl_exp *exp, int tuple)
 {
-	struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
-	int attr = repl ? CT_ATTR_REPL_ICMP_CODE : CT_ATTR_ORIG_ICMP_CODE;
+    const struct nfnl_exp_dir *dir = exp_get_dir(exp, tuple);
 
-	dir->proto.icmp.code = code;
-	ct->ce_mask |= attr;
+	return dir->proto.l4protodata.icmp.type;
 }
 
-int nfnl_ct_test_icmp_code(const struct nfnl_ct *ct, int repl)
+uint8_t nfnl_ct_get_icmp_code(const struct nfnl_exp *exp, int tuple)
 {
-	int attr = repl ? CT_ATTR_REPL_ICMP_CODE : CT_ATTR_ORIG_ICMP_CODE;
-	return !!(ct->ce_mask & attr);
-}
-
-uint8_t nfnl_ct_get_icmp_code(const struct nfnl_ct *ct, int tuple)
-{
-	const struct nfnl_ct_dir *dir = repl ? &ct->ct_repl : &ct->ct_orig;
+    const struct nfnl_exp_dir *dir = exp_get_dir(exp, tuple);
 
-	return dir->proto.icmp.code;
+	return dir->proto.l4protodata.icmp.code;
 }
 
 /** @} */
@@ -858,7 +940,6 @@ struct nl_object_ops exp_obj_ops = {
 	.oo_dump = {
 	    [NL_DUMP_LINE]	= exp_dump_line,
 	    [NL_DUMP_DETAILS]	= exp_dump_details,
-	    [NL_DUMP_STATS]	= exp_dump_stats,
 	},
 	.oo_compare		= exp_compare,
 	.oo_attrs2str		= exp_attrs2str,