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authorCong Wang <amwang@redhat.com>2013-08-31 13:44:28 +0800
committerDavid S. Miller <davem@davemloft.net>2013-08-31 22:29:59 -0400
commit3ce9b35ff6de8dfebb0b0045e667c000f632e563 (patch)
treeecde35b0c857ba52ef90724bf12f037f52ab4957 /net/ipv6/output_core.c
parentae5dbf1ad83cb90921a400d15fb18afae66e1e56 (diff)
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>
Diffstat (limited to 'net/ipv6/output_core.c')
-rw-r--r--net/ipv6/output_core.c22
1 files changed, 22 insertions, 0 deletions
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

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