[IPV6] ADDRCONF: Support RFC3484 configurable address selection policy table.

Policy table is implemented as an RCU linear list since we do not expect
large list nor frequent updates.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 47 insertions, 0 deletions

diff --git a/include/linux/if_addrlabel.h b/include/linux/if_addrlabel.h
new file mode 100644
index 000000000000..9fe79c95dd28
--- /dev/null
+++ b/include/linux/if_addrlabel.h
@@ -0,0 +1,32 @@
+/*
+ * if_addrlabel.h - netlink interface for address labels
+ *
+ * Copyright (C)2007 USAGI/WIDE Project,  All Rights Reserved.
+ *
+ * Authors:
+ *      YOSHIFUJI Hideaki @ USAGI/WIDE <yoshfuji@linux-ipv6.org>
+ */
+
+#ifndef __LINUX_IF_ADDRLABEL_H
+#define __LINUX_IF_ADDRLABEL_H
+
+struct ifaddrlblmsg
+{
+        __u8            ifal_family;            /* Address family */
+        __u8            __ifal_reserved;        /* Reserved */
+        __u8            ifal_prefixlen;         /* Prefix length */
+        __u8            ifal_flags;             /* Flags */
+        __u32           ifal_index;             /* Link index */
+        __u32           ifal_seq;               /* sequence number */
+};
+
+enum
+{
+        IFAL_ADDRESS = 1,
+        IFAL_LABEL = 2,
+        __IFAL_MAX
+};
+
+#define IFAL_MAX        (__IFAL_MAX - 1)
+
+#endif
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h
index 4e81836191df..e20dcc89a836 100644
--- a/include/linux/rtnetlink.h
+++ b/include/linux/rtnetlink.h
@@ -100,6 +100,13 @@ enum {
         RTM_NEWNDUSEROPT = 68,
 #define RTM_NEWNDUSEROPT RTM_NEWNDUSEROPT
 
+        RTM_NEWADDRLABEL = 72,
+#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
+        RTM_DELADDRLABEL,
+#define RTM_NEWADDRLABEL RTM_NEWADDRLABEL
+        RTM_GETADDRLABEL,
+#define RTM_GETADDRLABEL RTM_GETADDRLABEL
+
         __RTM_MAX,
 #define RTM_MAX         (((__RTM_MAX + 3) & ~3) - 1)
 };
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index 33b593e17441..bccc2feb99da 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -84,6 +84,14 @@ extern void			addrconf_leave_solict(struct inet6_dev *idev,
                                         struct in6_addr *addr);
 
 /*
+ *      IPv6 Address Label subsystem (addrlabel.c)
+ */
+extern int                      ipv6_addr_label_init(void);
+extern void                     ipv6_addr_label_rtnl_register(void);
+extern u32                      ipv6_addr_label(const struct in6_addr *addr,
+                                                int type, int ifindex);
+
+/*
  *      multicast prototypes (mcast.c)
  */
 extern int ipv6_sock_mc_join(struct sock *sk, int ifindex,