[IPV6]: Make ndisc_flow_init() common for later use.

For later use, this patch is renaming ndisc_flow_init() to
icmpv6_flow_init() and putting it in common place.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>

3 files changed, 28 insertions, 19 deletions

diff --git a/include/linux/icmpv6.h b/include/linux/icmpv6.h
index 8f86d6b621c8..e4d4300d768f 100644
--- a/include/linux/icmpv6.h
+++ b/include/linux/icmpv6.h
@@ -182,6 +182,14 @@ extern int				icmpv6_err_convert(int type, int code,
 extern void                             icmpv6_cleanup(void);
 extern void                             icmpv6_param_prob(struct sk_buff *skb,
                                                           int code, int pos);
+
+struct flowi;
+extern void                             icmpv6_flow_init(struct sock *sk,
+                                                         struct flowi *fl,
+                                                         u8 type,
+                                                         const struct in6_addr *saddr,
+                                                         const struct in6_addr *daddr,
+                                                         int oif);
 #endif
 
 #endif
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 12c0b85d6c46..cff74127ea32 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -777,6 +777,22 @@ drop_no_count:
         return 0;
 }
 
+void icmpv6_flow_init(struct sock *sk, struct flowi *fl,
+                      u8 type,
+                      const struct in6_addr *saddr,
+                      const struct in6_addr *daddr,
+                      int oif)
+{
+        memset(fl, 0, sizeof(*fl));
+        ipv6_addr_copy(&fl->fl6_src, saddr);
+        ipv6_addr_copy(&fl->fl6_dst, daddr);
+        fl->proto               = IPPROTO_ICMPV6;
+        fl->fl_icmp_type        = type;
+        fl->fl_icmp_code        = 0;
+        fl->oif                 = oif;
+        security_sk_classify_flow(sk, fl);
+}
+
 /*
  * Special lock-class for __icmpv6_sk:
  */
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 1fc33c8c7232..8db5f4a419aa 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -441,21 +441,6 @@ static void pndisc_destructor(struct pneigh_entry *n)
 /*
  *      Send a Neighbour Advertisement
  */
-
-static inline void ndisc_flow_init(struct flowi *fl, u8 type,
-                            struct in6_addr *saddr, struct in6_addr *daddr,
-                            int oif)
-{
-        memset(fl, 0, sizeof(*fl));
-        ipv6_addr_copy(&fl->fl6_src, saddr);
-        ipv6_addr_copy(&fl->fl6_dst, daddr);
-        fl->proto               = IPPROTO_ICMPV6;
-        fl->fl_icmp_type        = type;
-        fl->fl_icmp_code        = 0;
-        fl->oif                 = oif;
-        security_sk_classify_flow(ndisc_socket->sk, fl);
-}
-
 static void __ndisc_send(struct net_device *dev,
                          struct neighbour *neigh,
                          struct in6_addr *daddr, struct in6_addr *saddr,
@@ -474,8 +459,8 @@ static void __ndisc_send(struct net_device *dev,
 
         type = icmp6h->icmp6_type;
 
-        ndisc_flow_init(&fl, type, saddr, daddr,
-                        dev->ifindex);
+        icmpv6_flow_init(ndisc_socket->sk, &fl, type,
+                         saddr, daddr, dev->ifindex);
 
         dst = ndisc_dst_alloc(dev, neigh, daddr, ip6_output);
         if (!dst)
@@ -1439,8 +1424,8 @@ void ndisc_send_redirect(struct sk_buff *skb, struct neighbour *neigh,
                 return;
         }
 
-        ndisc_flow_init(&fl, NDISC_REDIRECT, &saddr_buf, &ipv6_hdr(skb)->saddr,
-                        dev->ifindex);
+        icmpv6_flow_init(ndisc_socket->sk, &fl, NDISC_REDIRECT,
+                         &saddr_buf, &ipv6_hdr(skb)->saddr, dev->ifindex);
 
         dst = ip6_route_output(NULL, &fl);
         if (dst == NULL)