IPVS: Change IPVS data structures to support IPv6 addresses

Introduce new 'af' fields into IPVS data structures for specifying an
entry's address family. Convert IP addresses to be of type union
nf_inet_addr.

Signed-off-by: Julius Volz <juliusv@google.com>
Signed-off-by: Simon Horman <horms@verge.net.au>

19 files changed, 121 insertions, 114 deletions

diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index a25ad24..d328255 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -21,6 +21,9 @@
 #include <linux/timer.h>
 
 #include <net/checksum.h>
+#include <linux/netfilter.h>		/* for union nf_inet_addr */
+#include <linux/ipv6.h>			/* for struct ipv6hdr */
+#include <net/ipv6.h>			/* for ipv6_addr_copy */
 
 #ifdef CONFIG_IP_VS_DEBUG
 #include <linux/net.h>
@@ -259,9 +262,10 @@ struct ip_vs_conn {
 	struct list_head        c_list;         /* hashed list heads */
 
 	/* Protocol, addresses and port numbers */
-	__be32                   caddr;          /* client address */
-	__be32                   vaddr;          /* virtual address */
-	__be32                   daddr;          /* destination address */
+	u16                      af;		/* address family */
+	union nf_inet_addr       caddr;          /* client address */
+	union nf_inet_addr       vaddr;          /* virtual address */
+	union nf_inet_addr       daddr;          /* destination address */
 	__be16                   cport;
 	__be16                   vport;
 	__be16                   dport;
@@ -314,8 +318,9 @@ struct ip_vs_service {
 	atomic_t		refcnt;   /* reference counter */
 	atomic_t		usecnt;   /* use counter */
 
+	u16			af;       /* address family */
 	__u16			protocol; /* which protocol (TCP/UDP) */
-	__be32			addr;	  /* IP address for virtual service */
+	union nf_inet_addr	addr;	  /* IP address for virtual service */
 	__be16			port;	  /* port number for the service */
 	__u32                   fwmark;   /* firewall mark of the service */
 	unsigned		flags;	  /* service status flags */
@@ -342,7 +347,8 @@ struct ip_vs_dest {
 	struct list_head	n_list;   /* for the dests in the service */
 	struct list_head	d_list;   /* for table with all the dests */
 
-	__be32			addr;		/* IP address of the server */
+	u16			af;		/* address family */
+	union nf_inet_addr	addr;		/* IP address of the server */
 	__be16			port;		/* port number of the server */
 	volatile unsigned	flags;		/* dest status flags */
 	atomic_t		conn_flags;	/* flags to copy to conn */
@@ -366,7 +372,7 @@ struct ip_vs_dest {
 	/* for virtual service */
 	struct ip_vs_service	*svc;		/* service it belongs to */
 	__u16			protocol;	/* which protocol (TCP/UDP) */
-	__be32			vaddr;		/* virtual IP address */
+	union nf_inet_addr	vaddr;		/* virtual IP address */
 	__be16			vport;		/* virtual port number */
 	__u32			vfwmark;	/* firewall mark of service */
 };
diff --git a/net/ipv4/ipvs/ip_vs_conn.c b/net/ipv4/ipvs/ip_vs_conn.c
index 44a6872..639d4bc 100644
--- a/net/ipv4/ipvs/ip_vs_conn.c
+++ b/net/ipv4/ipvs/ip_vs_conn.c
@@ -131,7 +131,7 @@ static inline int ip_vs_conn_hash(struct ip_vs_conn *cp)
 	int ret;
 
 	/* Hash by protocol, client address and port */
-	hash = ip_vs_conn_hashkey(cp->protocol, cp->caddr, cp->cport);
+	hash = ip_vs_conn_hashkey(cp->protocol, cp->caddr.ip, cp->cport);
 
 	ct_write_lock(hash);
 
@@ -162,7 +162,7 @@ static inline int ip_vs_conn_unhash(struct ip_vs_conn *cp)
 	int ret;
 
 	/* unhash it and decrease its reference counter */
-	hash = ip_vs_conn_hashkey(cp->protocol, cp->caddr, cp->cport);
+	hash = ip_vs_conn_hashkey(cp->protocol, cp->caddr.ip, cp->cport);
 
 	ct_write_lock(hash);
 
@@ -197,10 +197,10 @@ static inline struct ip_vs_conn *__ip_vs_conn_in_get
 	ct_read_lock(hash);
 
 	list_for_each_entry(cp, &ip_vs_conn_tab[hash], c_list) {
-		if (s_addr==cp->caddr && s_port==cp->cport &&
-		    d_port==cp->vport && d_addr==cp->vaddr &&
+		if (s_addr == cp->caddr.ip && s_port == cp->cport &&
+		    d_port == cp->vport && d_addr == cp->vaddr.ip &&
 		    ((!s_port) ^ (!(cp->flags & IP_VS_CONN_F_NO_CPORT))) &&
-		    protocol==cp->protocol) {
+		    protocol == cp->protocol) {
 			/* HIT */
 			atomic_inc(&cp->refcnt);
 			ct_read_unlock(hash);
@@ -243,10 +243,10 @@ struct ip_vs_conn *ip_vs_ct_in_get
 	ct_read_lock(hash);
 
 	list_for_each_entry(cp, &ip_vs_conn_tab[hash], c_list) {
-		if (s_addr==cp->caddr && s_port==cp->cport &&
-		    d_port==cp->vport && d_addr==cp->vaddr &&
+		if (s_addr == cp->caddr.ip && s_port == cp->cport &&
+		    d_port == cp->vport && d_addr == cp->vaddr.ip &&
 		    cp->flags & IP_VS_CONN_F_TEMPLATE &&
-		    protocol==cp->protocol) {
+		    protocol == cp->protocol) {
 			/* HIT */
 			atomic_inc(&cp->refcnt);
 			goto out;
@@ -286,8 +286,8 @@ struct ip_vs_conn *ip_vs_conn_out_get
 	ct_read_lock(hash);
 
 	list_for_each_entry(cp, &ip_vs_conn_tab[hash], c_list) {
-		if (d_addr == cp->caddr && d_port == cp->cport &&
-		    s_port == cp->dport && s_addr == cp->daddr &&
+		if (d_addr == cp->caddr.ip && d_port == cp->cport &&
+		    s_port == cp->dport && s_addr == cp->daddr.ip &&
 		    protocol == cp->protocol) {
 			/* HIT */
 			atomic_inc(&cp->refcnt);
@@ -406,9 +406,9 @@ ip_vs_bind_dest(struct ip_vs_conn *cp, struct ip_vs_dest *dest)
 		  "d:%u.%u.%u.%u:%d fwd:%c s:%u conn->flags:%X conn->refcnt:%d "
 		  "dest->refcnt:%d\n",
 		  ip_vs_proto_name(cp->protocol),
-		  NIPQUAD(cp->caddr), ntohs(cp->cport),
-		  NIPQUAD(cp->vaddr), ntohs(cp->vport),
-		  NIPQUAD(cp->daddr), ntohs(cp->dport),
+		  NIPQUAD(cp->caddr.ip), ntohs(cp->cport),
+		  NIPQUAD(cp->vaddr.ip), ntohs(cp->vport),
+		  NIPQUAD(cp->daddr.ip), ntohs(cp->dport),
 		  ip_vs_fwd_tag(cp), cp->state,
 		  cp->flags, atomic_read(&cp->refcnt),
 		  atomic_read(&dest->refcnt));
@@ -444,8 +444,8 @@ struct ip_vs_dest *ip_vs_try_bind_dest(struct ip_vs_conn *cp)
 	struct ip_vs_dest *dest;
 
 	if ((cp) && (!cp->dest)) {
-		dest = ip_vs_find_dest(cp->daddr, cp->dport,
-				       cp->vaddr, cp->vport, cp->protocol);
+		dest = ip_vs_find_dest(cp->daddr.ip, cp->dport,
+				       cp->vaddr.ip, cp->vport, cp->protocol);
 		ip_vs_bind_dest(cp, dest);
 		return dest;
 	} else
@@ -468,9 +468,9 @@ static inline void ip_vs_unbind_dest(struct ip_vs_conn *cp)
 		  "d:%u.%u.%u.%u:%d fwd:%c s:%u conn->flags:%X conn->refcnt:%d "
 		  "dest->refcnt:%d\n",
 		  ip_vs_proto_name(cp->protocol),
-		  NIPQUAD(cp->caddr), ntohs(cp->cport),
-		  NIPQUAD(cp->vaddr), ntohs(cp->vport),
-		  NIPQUAD(cp->daddr), ntohs(cp->dport),
+		  NIPQUAD(cp->caddr.ip), ntohs(cp->cport),
+		  NIPQUAD(cp->vaddr.ip), ntohs(cp->vport),
+		  NIPQUAD(cp->daddr.ip), ntohs(cp->dport),
 		  ip_vs_fwd_tag(cp), cp->state,
 		  cp->flags, atomic_read(&cp->refcnt),
 		  atomic_read(&dest->refcnt));
@@ -530,9 +530,9 @@ int ip_vs_check_template(struct ip_vs_conn *ct)
 			  "protocol %s s:%u.%u.%u.%u:%d v:%u.%u.%u.%u:%d "
 			  "-> d:%u.%u.%u.%u:%d\n",
 			  ip_vs_proto_name(ct->protocol),
-			  NIPQUAD(ct->caddr), ntohs(ct->cport),
-			  NIPQUAD(ct->vaddr), ntohs(ct->vport),
-			  NIPQUAD(ct->daddr), ntohs(ct->dport));
+			  NIPQUAD(ct->caddr.ip), ntohs(ct->cport),
+			  NIPQUAD(ct->vaddr.ip), ntohs(ct->vport),
+			  NIPQUAD(ct->daddr.ip), ntohs(ct->dport));
 
 		/*
 		 * Invalidate the connection template
@@ -641,11 +641,11 @@ ip_vs_conn_new(int proto, __be32 caddr, __be16 cport, __be32 vaddr, __be16 vport
 	INIT_LIST_HEAD(&cp->c_list);
 	setup_timer(&cp->timer, ip_vs_conn_expire, (unsigned long)cp);
 	cp->protocol	   = proto;
-	cp->caddr	   = caddr;
+	cp->caddr.ip	   = caddr;
 	cp->cport	   = cport;
-	cp->vaddr	   = vaddr;
+	cp->vaddr.ip	   = vaddr;
 	cp->vport	   = vport;
-	cp->daddr          = daddr;
+	cp->daddr.ip	   = daddr;
 	cp->dport          = dport;
 	cp->flags	   = flags;
 	spin_lock_init(&cp->lock);
@@ -763,9 +763,9 @@ static int ip_vs_conn_seq_show(struct seq_file *seq, void *v)
 		seq_printf(seq,
 			"%-3s %08X %04X %08X %04X %08X %04X %-11s %7lu\n",
 				ip_vs_proto_name(cp->protocol),
-				ntohl(cp->caddr), ntohs(cp->cport),
-				ntohl(cp->vaddr), ntohs(cp->vport),
-				ntohl(cp->daddr), ntohs(cp->dport),
+				ntohl(cp->caddr.ip), ntohs(cp->cport),
+				ntohl(cp->vaddr.ip), ntohs(cp->vport),
+				ntohl(cp->daddr.ip), ntohs(cp->dport),
 				ip_vs_state_name(cp->protocol, cp->state),
 				(cp->timer.expires-jiffies)/HZ);
 	}
@@ -812,9 +812,9 @@ static int ip_vs_conn_sync_seq_show(struct seq_file *seq, void *v)
 		seq_printf(seq,
 			"%-3s %08X %04X %08X %04X %08X %04X %-11s %-6s %7lu\n",
 				ip_vs_proto_name(cp->protocol),
-				ntohl(cp->caddr), ntohs(cp->cport),
-				ntohl(cp->vaddr), ntohs(cp->vport),
-				ntohl(cp->daddr), ntohs(cp->dport),
+				ntohl(cp->caddr.ip), ntohs(cp->cport),
+				ntohl(cp->vaddr.ip), ntohs(cp->vport),
+				ntohl(cp->daddr.ip), ntohs(cp->dport),
 				ip_vs_state_name(cp->protocol, cp->state),
 				ip_vs_origin_name(cp->flags),
 				(cp->timer.expires-jiffies)/HZ);
diff --git a/net/ipv4/ipvs/ip_vs_core.c b/net/ipv4/ipvs/ip_vs_core.c
index 9fbf0a6..4a54f33 100644
--- a/net/ipv4/ipvs/ip_vs_core.c
+++ b/net/ipv4/ipvs/ip_vs_core.c
@@ -232,14 +232,14 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
 						    snet, 0,
 						    iph->daddr,
 						    ports[1],
-						    dest->addr, dest->port,
+						    dest->addr.ip, dest->port,
 						    IP_VS_CONN_F_TEMPLATE,
 						    dest);
 			else
 				ct = ip_vs_conn_new(iph->protocol,
 						    snet, 0,
 						    iph->daddr, 0,
-						    dest->addr, 0,
+						    dest->addr.ip, 0,
 						    IP_VS_CONN_F_TEMPLATE,
 						    dest);
 			if (ct == NULL)
@@ -286,14 +286,14 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
 				ct = ip_vs_conn_new(IPPROTO_IP,
 						    snet, 0,
 						    htonl(svc->fwmark), 0,
-						    dest->addr, 0,
+						    dest->addr.ip, 0,
 						    IP_VS_CONN_F_TEMPLATE,
 						    dest);
 			else
 				ct = ip_vs_conn_new(iph->protocol,
 						    snet, 0,
 						    iph->daddr, 0,
-						    dest->addr, 0,
+						    dest->addr.ip, 0,
 						    IP_VS_CONN_F_TEMPLATE,
 						    dest);
 			if (ct == NULL)
@@ -313,7 +313,7 @@ ip_vs_sched_persist(struct ip_vs_service *svc,
 	cp = ip_vs_conn_new(iph->protocol,
 			    iph->saddr, ports[0],
 			    iph->daddr, ports[1],
-			    dest->addr, dport,
+			    dest->addr.ip, dport,
 			    0,
 			    dest);
 	if (cp == NULL) {
@@ -380,7 +380,7 @@ ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
 	cp = ip_vs_conn_new(iph->protocol,
 			    iph->saddr, pptr[0],
 			    iph->daddr, pptr[1],
-			    dest->addr, dest->port?dest->port:pptr[1],
+			    dest->addr.ip, dest->port ? dest->port : pptr[1],
 			    0,
 			    dest);
 	if (cp == NULL)
@@ -389,9 +389,9 @@ ip_vs_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
 	IP_VS_DBG(6, "Schedule fwd:%c c:%u.%u.%u.%u:%u v:%u.%u.%u.%u:%u "
 		  "d:%u.%u.%u.%u:%u conn->flags:%X conn->refcnt:%d\n",
 		  ip_vs_fwd_tag(cp),
-		  NIPQUAD(cp->caddr), ntohs(cp->cport),
-		  NIPQUAD(cp->vaddr), ntohs(cp->vport),
-		  NIPQUAD(cp->daddr), ntohs(cp->dport),
+		  NIPQUAD(cp->caddr.ip), ntohs(cp->cport),
+		  NIPQUAD(cp->vaddr.ip), ntohs(cp->vport),
+		  NIPQUAD(cp->daddr.ip), ntohs(cp->dport),
 		  cp->flags, atomic_read(&cp->refcnt));
 
 	ip_vs_conn_stats(cp, svc);
@@ -526,14 +526,14 @@ void ip_vs_nat_icmp(struct sk_buff *skb, struct ip_vs_protocol *pp,
 	struct iphdr *ciph	 = (struct iphdr *)(icmph + 1);
 
 	if (inout) {
-		iph->saddr = cp->vaddr;
+		iph->saddr = cp->vaddr.ip;
 		ip_send_check(iph);
-		ciph->daddr = cp->vaddr;
+		ciph->daddr = cp->vaddr.ip;
 		ip_send_check(ciph);
 	} else {
-		iph->daddr = cp->daddr;
+		iph->daddr = cp->daddr.ip;
 		ip_send_check(iph);
-		ciph->saddr = cp->daddr;
+		ciph->saddr = cp->daddr.ip;
 		ip_send_check(ciph);
 	}
 
@@ -762,7 +762,7 @@ ip_vs_out(unsigned int hooknum, struct sk_buff *skb,
 	/* mangle the packet */
 	if (pp->snat_handler && !pp->snat_handler(skb, pp, cp))
 		goto drop;
-	ip_hdr(skb)->saddr = cp->vaddr;
+	ip_hdr(skb)->saddr = cp->vaddr.ip;
 	ip_send_check(ip_hdr(skb));
 
 	/* For policy routing, packets originating from this
diff --git a/net/ipv4/ipvs/ip_vs_ctl.c b/net/ipv4/ipvs/ip_vs_ctl.c
index ede101e..3f2277b 100644
--- a/net/ipv4/ipvs/ip_vs_ctl.c
+++ b/net/ipv4/ipvs/ip_vs_ctl.c
@@ -317,7 +317,8 @@ static int ip_vs_svc_hash(struct ip_vs_service *svc)
 		/*
 		 *  Hash it by <protocol,addr,port> in ip_vs_svc_table
 		 */
-		hash = ip_vs_svc_hashkey(svc->protocol, svc->addr, svc->port);
+		hash = ip_vs_svc_hashkey(svc->protocol, svc->addr.ip,
+					 svc->port);
 		list_add(&svc->s_list, &ip_vs_svc_table[hash]);
 	} else {
 		/*
@@ -373,7 +374,7 @@ __ip_vs_service_get(__u16 protocol, __be32 vaddr, __be16 vport)
 	hash = ip_vs_svc_hashkey(protocol, vaddr, vport);
 
 	list_for_each_entry(svc, &ip_vs_svc_table[hash], s_list){
-		if ((svc->addr == vaddr)
+		if ((svc->addr.ip == vaddr)
 		    && (svc->port == vport)
 		    && (svc->protocol == protocol)) {
 			/* HIT */
@@ -503,7 +504,7 @@ static int ip_vs_rs_hash(struct ip_vs_dest *dest)
 	 *	Hash by proto,addr,port,
 	 *	which are the parameters of the real service.
 	 */
-	hash = ip_vs_rs_hashkey(dest->addr, dest->port);
+	hash = ip_vs_rs_hashkey(dest->addr.ip, dest->port);
 	list_add(&dest->d_list, &ip_vs_rtable[hash]);
 
 	return 1;
@@ -543,7 +544,7 @@ ip_vs_lookup_real_service(__u16 protocol, __be32 daddr, __be16 dport)
 
 	read_lock(&__ip_vs_rs_lock);
 	list_for_each_entry(dest, &ip_vs_rtable[hash], d_list) {
-		if ((dest->addr == daddr)
+		if ((dest->addr.ip == daddr)
 		    && (dest->port == dport)
 		    && ((dest->protocol == protocol) ||
 			dest->vfwmark)) {
@@ -569,7 +570,7 @@ ip_vs_lookup_dest(struct ip_vs_service *svc, __be32 daddr, __be16 dport)
 	 * Find the destination for the given service
 	 */
 	list_for_each_entry(dest, &svc->destinations, n_list) {
-		if ((dest->addr == daddr) && (dest->port == dport)) {
+		if ((dest->addr.ip == daddr) && (dest->port == dport)) {
 			/* HIT */
 			return dest;
 		}
@@ -626,14 +627,14 @@ ip_vs_trash_get_dest(struct ip_vs_service *svc, __be32 daddr, __be16 dport)
 		IP_VS_DBG(3, "Destination %u/%u.%u.%u.%u:%u still in trash, "
 			  "dest->refcnt=%d\n",
 			  dest->vfwmark,
-			  NIPQUAD(dest->addr), ntohs(dest->port),
+			  NIPQUAD(dest->addr.ip), ntohs(dest->port),
 			  atomic_read(&dest->refcnt));
-		if (dest->addr == daddr &&
+		if (dest->addr.ip == daddr &&
 		    dest->port == dport &&
 		    dest->vfwmark == svc->fwmark &&
 		    dest->protocol == svc->protocol &&
 		    (svc->fwmark ||
-		     (dest->vaddr == svc->addr &&
+		     (dest->vaddr.ip == svc->addr.ip &&
 		      dest->vport == svc->port))) {
 			/* HIT */
 			return dest;
@@ -646,7 +647,7 @@ ip_vs_trash_get_dest(struct ip_vs_service *svc, __be32 daddr, __be16 dport)
 			IP_VS_DBG(3, "Removing destination %u/%u.%u.%u.%u:%u "
 				  "from trash\n",
 				  dest->vfwmark,
-				  NIPQUAD(dest->addr), ntohs(dest->port));
+				  NIPQUAD(dest->addr.ip), ntohs(dest->port));
 			list_del(&dest->n_list);
 			ip_vs_dst_reset(dest);
 			__ip_vs_unbind_svc(dest);
@@ -779,10 +780,10 @@ ip_vs_new_dest(struct ip_vs_service *svc, struct ip_vs_dest_user *udest,
 	}
 
 	dest->protocol = svc->protocol;
-	dest->vaddr = svc->addr;
+	dest->vaddr.ip = svc->addr.ip;
 	dest->vport = svc->port;
 	dest->vfwmark = svc->fwmark;
-	dest->addr = udest->addr;
+	dest->addr.ip = udest->addr;
 	dest->port = udest->port;
 
 	atomic_set(&dest->activeconns, 0);
@@ -847,7 +848,7 @@ ip_vs_add_dest(struct ip_vs_service *svc, struct ip_vs_dest_user *udest)
 			  NIPQUAD(daddr), ntohs(dport),
 			  atomic_read(&dest->refcnt),
 			  dest->vfwmark,
-			  NIPQUAD(dest->vaddr),
+			  NIPQUAD(dest->vaddr.ip),
 			  ntohs(dest->vport));
 		__ip_vs_update_dest(svc, dest, udest);
 
@@ -993,7 +994,7 @@ static void __ip_vs_del_dest(struct ip_vs_dest *dest)
 	} else {
 		IP_VS_DBG(3, "Moving dest %u.%u.%u.%u:%u into trash, "
 			  "dest->refcnt=%d\n",
-			  NIPQUAD(dest->addr), ntohs(dest->port),
+			  NIPQUAD(dest->addr.ip), ntohs(dest->port),
 			  atomic_read(&dest->refcnt));
 		list_add(&dest->n_list, &ip_vs_dest_trash);
 		atomic_inc(&dest->refcnt);
@@ -1101,7 +1102,7 @@ ip_vs_add_service(struct ip_vs_service_user *u, struct ip_vs_service **svc_p)
 	atomic_set(&svc->refcnt, 0);
 
 	svc->protocol = u->protocol;
-	svc->addr = u->addr;
+	svc->addr.ip = u->addr;
 	svc->port = u->port;
 	svc->fwmark = u->fwmark;
 	svc->flags = u->flags;
@@ -1751,7 +1752,7 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v)
 		if (iter->table == ip_vs_svc_table)
 			seq_printf(seq, "%s  %08X:%04X %s ",
 				   ip_vs_proto_name(svc->protocol),
-				   ntohl(svc->addr),
+				   ntohl(svc->addr.ip),
 				   ntohs(svc->port),
 				   svc->scheduler->name);
 		else
@@ -1768,7 +1769,7 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v)
 		list_for_each_entry(dest, &svc->destinations, n_list) {
 			seq_printf(seq,
 				   "  -> %08X:%04X      %-7s %-6d %-10d %-10d\n",
-				   ntohl(dest->addr), ntohs(dest->port),
+				   ntohl(dest->addr.ip), ntohs(dest->port),
 				   ip_vs_fwd_name(atomic_read(&dest->conn_flags)),
 				   atomic_read(&dest->weight),
 				   atomic_read(&dest->activeconns),
@@ -2040,7 +2041,7 @@ static void
 ip_vs_copy_service(struct ip_vs_service_entry *dst, struct ip_vs_service *src)
 {
 	dst->protocol = src->protocol;
-	dst->addr = src->addr;
+	dst->addr = src->addr.ip;
 	dst->port = src->port;
 	dst->fwmark = src->fwmark;
 	strlcpy(dst->sched_name, src->scheduler->name, sizeof(dst->sched_name));
@@ -2114,7 +2115,7 @@ __ip_vs_get_dest_entries(const struct ip_vs_get_dests *get,
 			if (count >= get->num_dests)
 				break;
 
-			entry.addr = dest->addr;
+			entry.addr = dest->addr.ip;
 			entry.port = dest->port;
 			entry.conn_flags = atomic_read(&dest->conn_flags);
 			entry.weight = atomic_read(&dest->weight);
diff --git a/net/ipv4/ipvs/ip_vs_dh.c b/net/ipv4/ipvs/ip_vs_dh.c
index fa66824..9f9d795 100644
--- a/net/ipv4/ipvs/ip_vs_dh.c
+++ b/net/ipv4/ipvs/ip_vs_dh.c
@@ -218,7 +218,7 @@ ip_vs_dh_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
 	IP_VS_DBG(6, "DH: destination IP address %u.%u.%u.%u "
 		  "--> server %u.%u.%u.%u:%d\n",
 		  NIPQUAD(iph->daddr),
-		  NIPQUAD(dest->addr),
+		  NIPQUAD(dest->addr.ip),
 		  ntohs(dest->port));
 
 	return dest;
diff --git a/net/ipv4/ipvs/ip_vs_ftp.c b/net/ipv4/ipvs/ip_vs_ftp.c
index c1c758e..bfe5d70 100644
--- a/net/ipv4/ipvs/ip_vs_ftp.c
+++ b/net/ipv4/ipvs/ip_vs_ftp.c
@@ -172,17 +172,17 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
 
 		IP_VS_DBG(7, "PASV response (%u.%u.%u.%u:%d) -> "
 			  "%u.%u.%u.%u:%d detected\n",
-			  NIPQUAD(from), ntohs(port), NIPQUAD(cp->caddr), 0);
+			  NIPQUAD(from), ntohs(port), NIPQUAD(cp->caddr.ip), 0);
 
 		/*
 		 * Now update or create an connection entry for it
 		 */
 		n_cp = ip_vs_conn_out_get(iph->protocol, from, port,
-					  cp->caddr, 0);
+					  cp->caddr.ip, 0);
 		if (!n_cp) {
 			n_cp = ip_vs_conn_new(IPPROTO_TCP,
-					      cp->caddr, 0,
-					      cp->vaddr, port,
+					      cp->caddr.ip, 0,
+					      cp->vaddr.ip, port,
 					      from, port,
 					      IP_VS_CONN_F_NO_CPORT,
 					      cp->dest);
@@ -196,7 +196,7 @@ static int ip_vs_ftp_out(struct ip_vs_app *app, struct ip_vs_conn *cp,
 		/*
 		 * Replace the old passive address with the new one
 		 */
-		from = n_cp->vaddr;
+		from = n_cp->vaddr.ip;
 		port = n_cp->vport;
 		sprintf(buf,"%d,%d,%d,%d,%d,%d", NIPQUAD(from),
 			(ntohs(port)>>8)&255, ntohs(port)&255);
@@ -306,16 +306,16 @@ static int ip_vs_ftp_in(struct ip_vs_app *app, struct ip_vs_conn *cp,
 	 */
 	IP_VS_DBG(7, "protocol %s %u.%u.%u.%u:%d %u.%u.%u.%u:%d\n",
 		  ip_vs_proto_name(iph->protocol),
-		  NIPQUAD(to), ntohs(port), NIPQUAD(cp->vaddr), 0);
+		  NIPQUAD(to), ntohs(port), NIPQUAD(cp->vaddr.ip), 0);
 
 	n_cp = ip_vs_conn_in_get(iph->protocol,
 				 to, port,
-				 cp->vaddr, htons(ntohs(cp->vport)-1));
+				 cp->vaddr.ip, htons(ntohs(cp->vport)-1));
 	if (!n_cp) {
 		n_cp = ip_vs_conn_new(IPPROTO_TCP,
 				      to, port,
-				      cp->vaddr, htons(ntohs(cp->vport)-1),
-				      cp->daddr, htons(ntohs(cp->dport)-1),
+				      cp->vaddr.ip, htons(ntohs(cp->vport)-1),
+				      cp->daddr.ip, htons(ntohs(cp->dport)-1),
 				      0,
 				      cp->dest);
 		if (!n_cp)
diff --git a/net/ipv4/ipvs/ip_vs_lblc.c b/net/ipv4/ipvs/ip_vs_lblc.c
index d2a43aa..69309ed 100644
--- a/net/ipv4/ipvs/ip_vs_lblc.c
+++ b/net/ipv4/ipvs/ip_vs_lblc.c
@@ -422,7 +422,7 @@ __ip_vs_lblc_schedule(struct ip_vs_service *svc, struct iphdr *iph)
 
 	IP_VS_DBG(6, "LBLC: server %d.%d.%d.%d:%d "
 		  "activeconns %d refcnt %d weight %d overhead %d\n",
-		  NIPQUAD(least->addr), ntohs(least->port),
+		  NIPQUAD(least->addr.ip), ntohs(least->port),
 		  atomic_read(&least->activeconns),
 		  atomic_read(&least->refcnt),
 		  atomic_read(&least->weight), loh);
@@ -506,7 +506,7 @@ out:
 	IP_VS_DBG(6, "LBLC: destination IP address %u.%u.%u.%u "
 		  "--> server %u.%u.%u.%u:%d\n",
 		  NIPQUAD(iph->daddr),
-		  NIPQUAD(dest->addr),
+		  NIPQUAD(dest->addr.ip),
 		  ntohs(dest->port));
 
 	return dest;
diff --git a/net/ipv4/ipvs/ip_vs_lblcr.c b/net/ipv4/ipvs/ip_vs_lblcr.c
index 375a1ff..51c746e 100644
--- a/net/ipv4/ipvs/ip_vs_lblcr.c
+++ b/net/ipv4/ipvs/ip_vs_lblcr.c
@@ -204,7 +204,7 @@ static inline struct ip_vs_dest *ip_vs_dest_set_min(struct ip_vs_dest_set *set)
 
 	IP_VS_DBG(6, "ip_vs_dest_set_min: server %d.%d.%d.%d:%d "
 		  "activeconns %d refcnt %d weight %d overhead %d\n",
-		  NIPQUAD(least->addr), ntohs(least->port),
+		  NIPQUAD(least->addr.ip), ntohs(least->port),
 		  atomic_read(&least->activeconns),
 		  atomic_read(&least->refcnt),
 		  atomic_read(&least->weight), loh);
@@ -250,7 +250,7 @@ static inline struct ip_vs_dest *ip_vs_dest_set_max(struct ip_vs_dest_set *set)
 
 	IP_VS_DBG(6, "ip_vs_dest_set_max: server %d.%d.%d.%d:%d "
 		  "activeconns %d refcnt %d weight %d overhead %d\n",
-		  NIPQUAD(most->addr), ntohs(most->port),
+		  NIPQUAD(most->addr.ip), ntohs(most->port),
 		  atomic_read(&most->activeconns),
 		  atomic_read(&most->refcnt),
 		  atomic_read(&most->weight), moh);
@@ -598,7 +598,7 @@ __ip_vs_lblcr_schedule(struct ip_vs_service *svc, struct iphdr *iph)
 
 	IP_VS_DBG(6, "LBLCR: server %d.%d.%d.%d:%d "
 		  "activeconns %d refcnt %d weight %d overhead %d\n",
-		  NIPQUAD(least->addr), ntohs(least->port),
+		  NIPQUAD(least->addr.ip), ntohs(least->port),
 		  atomic_read(&least->activeconns),
 		  atomic_read(&least->refcnt),
 		  atomic_read(&least->weight), loh);
@@ -706,7 +706,7 @@ out:
 	IP_VS_DBG(6, "LBLCR: destination IP address %u.%u.%u.%u "
 		  "--> server %u.%u.%u.%u:%d\n",
 		  NIPQUAD(iph->daddr),
-		  NIPQUAD(dest->addr),
+		  NIPQUAD(dest->addr.ip),
 		  ntohs(dest->port));
 
 	return dest;
diff --git a/net/ipv4/ipvs/ip_vs_lc.c b/net/ipv4/ipvs/ip_vs_lc.c
index 2c3de1b..551d293 100644
--- a/net/ipv4/ipvs/ip_vs_lc.c
+++ b/net/ipv4/ipvs/ip_vs_lc.c
@@ -68,7 +68,7 @@ ip_vs_lc_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
 
 	if (least)
 	IP_VS_DBG(6, "LC: server %u.%u.%u.%u:%u activeconns %d inactconns %d\n",
-		  NIPQUAD(least->addr), ntohs(least->port),
+		  NIPQUAD(least->addr.ip), ntohs(least->port),
 		  atomic_read(&least->activeconns),
 		  atomic_read(&least->inactconns));
 
diff --git a/net/ipv4/ipvs/ip_vs_nq.c b/net/ipv4/ipvs/ip_vs_nq.c
index 5330d5a..aa0e32a 100644
--- a/net/ipv4/ipvs/ip_vs_nq.c
+++ b/net/ipv4/ipvs/ip_vs_nq.c
@@ -101,7 +101,7 @@ ip_vs_nq_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
   out:
 	IP_VS_DBG(6, "NQ: server %u.%u.%u.%u:%u "
 		  "activeconns %d refcnt %d weight %d overhead %d\n",
-		  NIPQUAD(least->addr), ntohs(least->port),
+		  NIPQUAD(least->addr.ip), ntohs(least->port),
 		  atomic_read(&least->activeconns),
 		  atomic_read(&least->refcnt),
 		  atomic_read(&least->weight), loh);
diff --git a/net/ipv4/ipvs/ip_vs_proto_tcp.c b/net/ipv4/ipvs/ip_vs_proto_tcp.c
index d0ea467..15860e1 100644
--- a/net/ipv4/ipvs/ip_vs_proto_tcp.c
+++ b/net/ipv4/ipvs/ip_vs_proto_tcp.c
@@ -147,7 +147,7 @@ tcp_snat_handler(struct sk_buff *skb,
 	/* Adjust TCP checksums */
 	if (!cp->app) {
 		/* Only port and addr are changed, do fast csum update */
-		tcp_fast_csum_update(tcph, cp->daddr, cp->vaddr,
+		tcp_fast_csum_update(tcph, cp->daddr.ip, cp->vaddr.ip,
 				     cp->dport, cp->vport);
 		if (skb->ip_summed == CHECKSUM_COMPLETE)
 			skb->ip_summed = CHECKSUM_NONE;
@@ -155,7 +155,7 @@ tcp_snat_handler(struct sk_buff *skb,
 		/* full checksum calculation */
 		tcph->check = 0;
 		skb->csum = skb_checksum(skb, tcphoff, skb->len - tcphoff, 0);
-		tcph->check = csum_tcpudp_magic(cp->vaddr, cp->caddr,
+		tcph->check = csum_tcpudp_magic(cp->vaddr.ip, cp->caddr.ip,
 						skb->len - tcphoff,
 						cp->protocol, skb->csum);
 		IP_VS_DBG(11, "O-pkt: %s O-csum=%d (+%zd)\n",
@@ -198,7 +198,7 @@ tcp_dnat_handler(struct sk_buff *skb,
 	 */
 	if (!cp->app) {
 		/* Only port and addr are changed, do fast csum update */
-		tcp_fast_csum_update(tcph, cp->vaddr, cp->daddr,
+		tcp_fast_csum_update(tcph, cp->vaddr.ip, cp->daddr.ip,
 				     cp->vport, cp->dport);
 		if (skb->ip_summed == CHECKSUM_COMPLETE)
 			skb->ip_summed = CHECKSUM_NONE;
@@ -206,7 +206,7 @@ tcp_dnat_handler(struct sk_buff *skb,
 		/* full checksum calculation */
 		tcph->check = 0;
 		skb->csum = skb_checksum(skb, tcphoff, skb->len - tcphoff, 0);
-		tcph->check = csum_tcpudp_magic(cp->caddr, cp->daddr,
+		tcph->check = csum_tcpudp_magic(cp->caddr.ip, cp->daddr.ip,
 						skb->len - tcphoff,
 						cp->protocol, skb->csum);
 		skb->ip_summed = CHECKSUM_UNNECESSARY;
@@ -427,8 +427,8 @@ set_tcp_state(struct ip_vs_protocol *pp, struct ip_vs_conn *cp,
 			  th->fin? 'F' : '.',
 			  th->ack? 'A' : '.',
 			  th->rst? 'R' : '.',
-			  NIPQUAD(cp->daddr), ntohs(cp->dport),
-			  NIPQUAD(cp->caddr), ntohs(cp->cport),
+			  NIPQUAD(cp->daddr.ip), ntohs(cp->dport),
+			  NIPQUAD(cp->caddr.ip), ntohs(cp->cport),
 			  tcp_state_name(cp->state),
 			  tcp_state_name(new_state),
 			  atomic_read(&cp->refcnt));
@@ -549,8 +549,8 @@ tcp_app_conn_bind(struct ip_vs_conn *cp)
 			IP_VS_DBG(9, "%s: Binding conn %u.%u.%u.%u:%u->"
 				  "%u.%u.%u.%u:%u to app %s on port %u\n",
 				  __func__,
-				  NIPQUAD(cp->caddr), ntohs(cp->cport),
-				  NIPQUAD(cp->vaddr), ntohs(cp->vport),
+				  NIPQUAD(cp->caddr.ip), ntohs(cp->cport),
+				  NIPQUAD(cp->vaddr.ip), ntohs(cp->vport),
 				  inc->name, ntohs(inc->port));
 			cp->app = inc;
 			if (inc->init_conn)
diff --git a/net/ipv4/ipvs/ip_vs_proto_udp.c b/net/ipv4/ipvs/ip_vs_proto_udp.c
index c6be5d5..8dfad5d 100644
--- a/net/ipv4/ipvs/ip_vs_proto_udp.c
+++ b/net/ipv4/ipvs/ip_vs_proto_udp.c
@@ -158,7 +158,7 @@ udp_snat_handler(struct sk_buff *skb,
 	 */
 	if (!cp->app && (udph->check != 0)) {
 		/* Only port and addr are changed, do fast csum update */
-		udp_fast_csum_update(udph, cp->daddr, cp->vaddr,
+		udp_fast_csum_update(udph, cp->daddr.ip, cp->vaddr.ip,
 				     cp->dport, cp->vport);
 		if (skb->ip_summed == CHECKSUM_COMPLETE)
 			skb->ip_summed = CHECKSUM_NONE;
@@ -166,7 +166,7 @@ udp_snat_handler(struct sk_buff *skb,
 		/* full checksum calculation */
 		udph->check = 0;
 		skb->csum = skb_checksum(skb, udphoff, skb->len - udphoff, 0);
-		udph->check = csum_tcpudp_magic(cp->vaddr, cp->caddr,
+		udph->check = csum_tcpudp_magic(cp->vaddr.ip, cp->caddr.ip,
 						skb->len - udphoff,
 						cp->protocol, skb->csum);
 		if (udph->check == 0)
@@ -211,7 +211,7 @@ udp_dnat_handler(struct sk_buff *skb,
 	 */
 	if (!cp->app && (udph->check != 0)) {
 		/* Only port and addr are changed, do fast csum update */
-		udp_fast_csum_update(udph, cp->vaddr, cp->daddr,
+		udp_fast_csum_update(udph, cp->vaddr.ip, cp->daddr.ip,
 				     cp->vport, cp->dport);
 		if (skb->ip_summed == CHECKSUM_COMPLETE)
 			skb->ip_summed = CHECKSUM_NONE;
@@ -219,7 +219,7 @@ udp_dnat_handler(struct sk_buff *skb,
 		/* full checksum calculation */
 		udph->check = 0;
 		skb->csum = skb_checksum(skb, udphoff, skb->len - udphoff, 0);
-		udph->check = csum_tcpudp_magic(cp->caddr, cp->daddr,
+		udph->check = csum_tcpudp_magic(cp->caddr.ip, cp->daddr.ip,
 						skb->len - udphoff,
 						cp->protocol, skb->csum);
 		if (udph->check == 0)
@@ -343,8 +343,8 @@ static int udp_app_conn_bind(struct ip_vs_conn *cp)
 			IP_VS_DBG(9, "%s: Binding conn %u.%u.%u.%u:%u->"
 				  "%u.%u.%u.%u:%u to app %s on port %u\n",
 				  __func__,
-				  NIPQUAD(cp->caddr), ntohs(cp->cport),
-				  NIPQUAD(cp->vaddr), ntohs(cp->vport),
+				  NIPQUAD(cp->caddr.ip), ntohs(cp->cport),
+				  NIPQUAD(cp->vaddr.ip), ntohs(cp->vport),
 				  inc->name, ntohs(inc->port));
 			cp->app = inc;
 			if (inc->init_conn)
diff --git a/net/ipv4/ipvs/ip_vs_rr.c b/net/ipv4/ipvs/ip_vs_rr.c
index f749291..27f0b62 100644
--- a/net/ipv4/ipvs/ip_vs_rr.c
+++ b/net/ipv4/ipvs/ip_vs_rr.c
@@ -76,7 +76,7 @@ ip_vs_rr_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
 	write_unlock(&svc->sched_lock);
 	IP_VS_DBG(6, "RR: server %u.%u.%u.%u:%u "
 		  "activeconns %d refcnt %d weight %d\n",
-		  NIPQUAD(dest->addr), ntohs(dest->port),
+		  NIPQUAD(dest->addr.ip), ntohs(dest->port),
 		  atomic_read(&dest->activeconns),
 		  atomic_read(&dest->refcnt), atomic_read(&dest->weight));
 
diff --git a/net/ipv4/ipvs/ip_vs_sed.c b/net/ipv4/ipvs/ip_vs_sed.c
index 53f73be..38b574b 100644
--- a/net/ipv4/ipvs/ip_vs_sed.c
+++ b/net/ipv4/ipvs/ip_vs_sed.c
@@ -103,7 +103,7 @@ ip_vs_sed_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
 
 	IP_VS_DBG(6, "SED: server %u.%u.%u.%u:%u "
 		  "activeconns %d refcnt %d weight %d overhead %d\n",
-		  NIPQUAD(least->addr), ntohs(least->port),
+		  NIPQUAD(least->addr.ip), ntohs(least->port),
 		  atomic_read(&least->activeconns),
 		  atomic_read(&least->refcnt),
 		  atomic_read(&least->weight), loh);
diff --git a/net/ipv4/ipvs/ip_vs_sh.c b/net/ipv4/ipvs/ip_vs_sh.c
index 7b979e2..c9e54e2 100644
--- a/net/ipv4/ipvs/ip_vs_sh.c
+++ b/net/ipv4/ipvs/ip_vs_sh.c
@@ -215,7 +215,7 @@ ip_vs_sh_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
 	IP_VS_DBG(6, "SH: source IP address %u.%u.%u.%u "
 		  "--> server %u.%u.%u.%u:%d\n",
 		  NIPQUAD(iph->saddr),
-		  NIPQUAD(dest->addr),
+		  NIPQUAD(dest->addr.ip),
 		  ntohs(dest->port));
 
 	return dest;
diff --git a/net/ipv4/ipvs/ip_vs_sync.c b/net/ipv4/ipvs/ip_vs_sync.c
index a652da2..2cf47b2 100644
--- a/net/ipv4/ipvs/ip_vs_sync.c
+++ b/net/ipv4/ipvs/ip_vs_sync.c
@@ -256,9 +256,9 @@ void ip_vs_sync_conn(struct ip_vs_conn *cp)
 	s->cport = cp->cport;
 	s->vport = cp->vport;
 	s->dport = cp->dport;
-	s->caddr = cp->caddr;
-	s->vaddr = cp->vaddr;
-	s->daddr = cp->daddr;
+	s->caddr = cp->caddr.ip;
+	s->vaddr = cp->vaddr.ip;
+	s->daddr = cp->daddr.ip;
 	s->flags = htons(cp->flags & ~IP_VS_CONN_F_HASHED);
 	s->state = htons(cp->state);
 	if (cp->flags & IP_VS_CONN_F_SEQ_MASK) {
diff --git a/net/ipv4/ipvs/ip_vs_wlc.c b/net/ipv4/ipvs/ip_vs_wlc.c
index df7ad8d..09fd993 100644
--- a/net/ipv4/ipvs/ip_vs_wlc.c
+++ b/net/ipv4/ipvs/ip_vs_wlc.c
@@ -91,7 +91,7 @@ ip_vs_wlc_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
 
 	IP_VS_DBG(6, "WLC: server %u.%u.%u.%u:%u "
 		  "activeconns %d refcnt %d weight %d overhead %d\n",
-		  NIPQUAD(least->addr), ntohs(least->port),
+		  NIPQUAD(least->addr.ip), ntohs(least->port),
 		  atomic_read(&least->activeconns),
 		  atomic_read(&least->refcnt),
 		  atomic_read(&least->weight), loh);
diff --git a/net/ipv4/ipvs/ip_vs_wrr.c b/net/ipv4/ipvs/ip_vs_wrr.c
index 0d86a79..19c49b2 100644
--- a/net/ipv4/ipvs/ip_vs_wrr.c
+++ b/net/ipv4/ipvs/ip_vs_wrr.c
@@ -197,7 +197,7 @@ ip_vs_wrr_schedule(struct ip_vs_service *svc, const struct sk_buff *skb)
 
 	IP_VS_DBG(6, "WRR: server %u.%u.%u.%u:%u "
 		  "activeconns %d refcnt %d weight %d\n",
-		  NIPQUAD(dest->addr), ntohs(dest->port),
+		  NIPQUAD(dest->addr.ip), ntohs(dest->port),
 		  atomic_read(&dest->activeconns),
 		  atomic_read(&dest->refcnt),
 		  atomic_read(&dest->weight));
diff --git a/net/ipv4/ipvs/ip_vs_xmit.c b/net/ipv4/ipvs/ip_vs_xmit.c
index 9892d4a..88199c9 100644
--- a/net/ipv4/ipvs/ip_vs_xmit.c
+++ b/net/ipv4/ipvs/ip_vs_xmit.c
@@ -71,7 +71,7 @@ __ip_vs_get_out_rt(struct ip_vs_conn *cp, u32 rtos)
 				.oif = 0,
 				.nl_u = {
 					.ip4_u = {
-						.daddr = dest->addr,
+						.daddr = dest->addr.ip,
 						.saddr = 0,
 						.tos = rtos, } },
 			};
@@ -80,12 +80,12 @@ __ip_vs_get_out_rt(struct ip_vs_conn *cp, u32 rtos)
 				spin_unlock(&dest->dst_lock);
 				IP_VS_DBG_RL("ip_route_output error, "
 					     "dest: %u.%u.%u.%u\n",
-					     NIPQUAD(dest->addr));
+					     NIPQUAD(dest->addr.ip));
 				return NULL;
 			}
 			__ip_vs_dst_set(dest, rtos, dst_clone(&rt->u.dst));
 			IP_VS_DBG(10, "new dst %u.%u.%u.%u, refcnt=%d, rtos=%X\n",
-				  NIPQUAD(dest->addr),
+				  NIPQUAD(dest->addr.ip),
 				  atomic_read(&rt->u.dst.__refcnt), rtos);
 		}
 		spin_unlock(&dest->dst_lock);
@@ -94,14 +94,14 @@ __ip_vs_get_out_rt(struct ip_vs_conn *cp, u32 rtos)
 			.oif = 0,
 			.nl_u = {
 				.ip4_u = {
-					.daddr = cp->daddr,
+					.daddr = cp->daddr.ip,
 					.saddr = 0,
 					.tos = rtos, } },
 		};
 
 		if (ip_route_output_key(&init_net, &rt, &fl)) {
 			IP_VS_DBG_RL("ip_route_output error, dest: "
-				     "%u.%u.%u.%u\n", NIPQUAD(cp->daddr));
+				     "%u.%u.%u.%u\n", NIPQUAD(cp->daddr.ip));
 			return NULL;
 		}
 	}
@@ -264,7 +264,7 @@ ip_vs_nat_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
 	/* mangle the packet */
 	if (pp->dnat_handler && !pp->dnat_handler(skb, pp, cp))
 		goto tx_error;
-	ip_hdr(skb)->daddr = cp->daddr;
+	ip_hdr(skb)->daddr = cp->daddr.ip;
 	ip_send_check(ip_hdr(skb));
 
 	IP_VS_DBG_PKT(10, pp, skb, 0, "After DNAT");