[IPV6]: Optimize hop-limit determination.

Last part of hop-limit determination is always:
    hoplimit = dst_metric(dst, RTAX_HOPLIMIT);
    if (hoplimit < 0)
        hoplimit = ipv6_get_hoplimit(dst->dev).

Let's consolidate it as ip6_dst_hoplimit(dst).

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

1 files changed, 1 insertions, 3 deletions

diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index c11c76cab371..8e29fb1d1df6 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -904,9 +904,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
                 dst = sk_dst_get(sk);
                 if (dst) {
                         if (val < 0)
-                                val = dst_metric(dst, RTAX_HOPLIMIT);
-                        if (val < 0)
-                                val = ipv6_get_hoplimit(dst->dev);
+                                val = ip6_dst_hoplimit(dst);
                         dst_release(dst);
                 }
                 if (val < 0)