ipv6: move ip6_dst_hoplimit() into core kernel

It will be used by vxlan, and may not be inlined.

Cc: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

4 files changed, 24 insertions, 21 deletions

diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index f667248202b6..f525e7038cca 100644
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -112,8 +112,6 @@ extern struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
                                            const struct in6_addr *addr,
                                            bool anycast);
 
-extern int                      ip6_dst_hoplimit(struct dst_entry *dst);
-
 /*
  *      support functions for ND
  *
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 7bdff0455065..bbf1c8fb8511 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -658,6 +658,8 @@ static inline int ipv6_addr_diff(const struct in6_addr *a1, const struct in6_add
 
 extern void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt);
 
+extern int ip6_dst_hoplimit(struct dst_entry *dst);
+
 /*
  *      Header manipulation
  */
diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c
index ab92a3673fbb..53a062187db1 100644
--- a/net/ipv6/output_core.c
+++ b/net/ipv6/output_core.c
@@ -5,6 +5,7 @@
 #include <linux/export.h>
 #include <net/ipv6.h>
 #include <net/ip6_fib.h>
+#include <net/addrconf.h>
 
 void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
 {
@@ -75,3 +76,24 @@ int ip6_find_1stfragopt(struct sk_buff *skb, u8 **nexthdr)
         return offset;
 }
 EXPORT_SYMBOL(ip6_find_1stfragopt);
+
+#if IS_ENABLED(CONFIG_IPV6)
+int ip6_dst_hoplimit(struct dst_entry *dst)
+{
+        int hoplimit = dst_metric_raw(dst, RTAX_HOPLIMIT);
+        if (hoplimit == 0) {
+                struct net_device *dev = dst->dev;
+                struct inet6_dev *idev;
+
+                rcu_read_lock();
+                idev = __in6_dev_get(dev);
+                if (idev)
+                        hoplimit = idev->cnf.hop_limit;
+                else
+                        hoplimit = dev_net(dev)->ipv6.devconf_all->hop_limit;
+                rcu_read_unlock();
+        }
+        return hoplimit;
+}
+EXPORT_SYMBOL(ip6_dst_hoplimit);
+#endif
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 55236a84c748..b770085ae36d 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1354,25 +1354,6 @@ out:
         return entries > rt_max_size;
 }
 
-int ip6_dst_hoplimit(struct dst_entry *dst)
-{
-        int hoplimit = dst_metric_raw(dst, RTAX_HOPLIMIT);
-        if (hoplimit == 0) {
-                struct net_device *dev = dst->dev;
-                struct inet6_dev *idev;
-
-                rcu_read_lock();
-                idev = __in6_dev_get(dev);
-                if (idev)
-                        hoplimit = idev->cnf.hop_limit;
-                else
-                        hoplimit = dev_net(dev)->ipv6.devconf_all->hop_limit;
-                rcu_read_unlock();
-        }
-        return hoplimit;
-}
-EXPORT_SYMBOL(ip6_dst_hoplimit);
-
 /*
  *
  */