ipv6: export several functions

This patch exports some neighbour discovery functions which can be used
by 6lowpan neighbour discovery ops functionality then.

Cc: David S. Miller <[e-mail]>
Cc: Alexey Kuznetsov <[e-mail]>
Cc: James Morris <[e-mail]>
Cc: Hideaki YOSHIFUJI <[e-mail]>
Cc: Patrick McHardy <[e-mail]>
Acked-by: YOSHIFUJI Hideaki <[e-mail]>
Reviewed-by: Stefan Schmidt <[e-mail]>
Signed-off-by: Alexander Aring <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

include/net/addrconf.h

···
 void addrconf_add_linklocal(struct inet6_dev *idev,
 			    const struct in6_addr *addr, u32 flags);
 
+int addrconf_prefix_rcv_add_addr(struct net *net, struct net_device *dev,
+				 const struct prefix_info *pinfo,
+				 struct inet6_dev *in6_dev,
+				 const struct in6_addr *addr, int addr_type,
+				 u32 addr_flags, bool sllao, bool tokenized,
+				 __u32 valid_lft, u32 prefered_lft);
+
 static inline int addrconf_ifid_eui48(u8 *eui, struct net_device *dev)
 {
 	if (dev->addr_len != ETH_ALEN)

include/net/ndisc.h

···
 
 #include <net/neighbour.h>
 
+/* Set to 3 to get tracing... */
+#define ND_DEBUG 1
+
+#define ND_PRINTK(val, level, fmt, ...)				\
+do {								\
+	if (val <= ND_DEBUG)					\
+		net_##level##_ratelimited(fmt, ##__VA_ARGS__);	\
+} while (0)
+
 struct ctl_table;
 struct inet6_dev;
 struct net_device;
···
 struct ndisc_options *ndisc_parse_options(const struct net_device *dev,
 					  u8 *opt, int opt_len,
 					  struct ndisc_options *ndopts);
+
+void __ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data,
+			      int data_len, int pad);
 
 #define NDISC_OPS_REDIRECT_DATA_SPACE	2
 

net/ipv6/addrconf.c

···
 	       idev->addr_gen_mode == IN6_ADDR_GEN_MODE_RANDOM;
 }
 
-static int addrconf_prefix_rcv_add_addr(struct net *net,
-					struct net_device *dev,
-					const struct prefix_info *pinfo,
-					struct inet6_dev *in6_dev,
-					const struct in6_addr *addr,
-					int addr_type, u32 addr_flags,
-					bool sllao, bool tokenized,
-					__u32 valid_lft, u32 prefered_lft)
+int addrconf_prefix_rcv_add_addr(struct net *net, struct net_device *dev,
+				 const struct prefix_info *pinfo,
+				 struct inet6_dev *in6_dev,
+				 const struct in6_addr *addr, int addr_type,
+				 u32 addr_flags, bool sllao, bool tokenized,
+				 __u32 valid_lft, u32 prefered_lft)
 {
 	struct inet6_ifaddr *ifp = ipv6_get_ifaddr(net, addr, dev, 1);
 	int create = 0, update_lft = 0;
···
 
 	return 0;
 }
+EXPORT_SYMBOL_GPL(addrconf_prefix_rcv_add_addr);
 
 void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len, bool sllao)
 {

net/ipv6/ndisc.c

···
 #include <linux/netfilter.h>
 #include <linux/netfilter_ipv6.h>
 
-/* Set to 3 to get tracing... */
-#define ND_DEBUG 1
-
-#define ND_PRINTK(val, level, fmt, ...)				\
-do {								\
-	if (val <= ND_DEBUG)					\
-		net_##level##_ratelimited(fmt, ##__VA_ARGS__);	\
-} while (0)
-
 static u32 ndisc_hash(const void *pkey,
 		      const struct net_device *dev,
 		      __u32 *hash_rnd);
···
 };
 EXPORT_SYMBOL_GPL(nd_tbl);
 
-static void __ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data,
-				     int data_len, int pad)
+void __ndisc_fill_addr_option(struct sk_buff *skb, int type, void *data,
+			      int data_len, int pad)
 {
 	int space = __ndisc_opt_addr_space(data_len, pad);
 	u8 *opt = skb_put(skb, space);
···
 	if (space > 0)
 		memset(opt, 0, space);
 }
+EXPORT_SYMBOL_GPL(__ndisc_fill_addr_option);
 
 static inline void ndisc_fill_addr_option(struct sk_buff *skb, int type,
 					  void *data, u8 icmp6_type)