diff options
| author | Cong Wang <amwang@redhat.com> | 2013-08-31 13:44:28 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-08-31 22:29:59 -0400 |
| commit | 3ce9b35ff6de8dfebb0b0045e667c000f632e563 (patch) | |
| tree | ecde35b0c857ba52ef90724bf12f037f52ab4957 /net/ipv6/output_core.c | |
| parent | ae5dbf1ad83cb90921a400d15fb18afae66e1e56 (diff) | |
| download | linux-3ce9b35ff6de8dfebb0b0045e667c000f632e563.tar.bz2 | |
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.c | 22 |
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 |