diff options
| author | Vadim Fedorenko <vfedorenko@novek.ru> | 2021-07-20 23:06:27 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-07-21 08:22:02 -0700 |
| commit | 427faee167bce4ccb0b22f6815a9ac509e31d4c3 (patch) | |
| tree | 04bfc7c88412af0198c935884257cd57601a52af /net/ipv6/route.c | |
| parent | 7c804e91df523a37c29e183ea2b10ac73c3a4f3d (diff) | |
net: ipv6: introduce ip6_dst_mtu_maybe_forward
Replace ip6_dst_mtu_forward with ip6_dst_mtu_maybe_forward and
reuse this code in ip6_mtu. Actually these two functions were
almost duplicates, this change will simplify the maintaince of
mtu calculation code.
Signed-off-by: Vadim Fedorenko <vfedorenko@novek.ru>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/route.c')
| -rw-r--r-- | net/ipv6/route.c | 20 |
1 files changed, 1 insertions, 19 deletions
diff --git a/net/ipv6/route.c b/net/ipv6/route.c index 5f7286acca33..21d5d0b4cde5 100644 --- a/net/ipv6/route.c +++ b/net/ipv6/route.c @@ -3201,25 +3201,7 @@ static unsigned int ip6_default_advmss(const struct dst_entry *dst) INDIRECT_CALLABLE_SCOPE unsigned int ip6_mtu(const struct dst_entry *dst) { - struct inet6_dev *idev; - unsigned int mtu; - - mtu = dst_metric_raw(dst, RTAX_MTU); - if (mtu) - goto out; - - mtu = IPV6_MIN_MTU; - - rcu_read_lock(); - idev = __in6_dev_get(dst->dev); - if (idev) - mtu = idev->cnf.mtu6; - rcu_read_unlock(); - -out: - mtu = min_t(unsigned int, mtu, IP6_MAX_MTU); - - return mtu - lwtunnel_headroom(dst->lwtstate, mtu); + return ip6_dst_mtu_maybe_forward(dst, false); } EXPORT_INDIRECT_CALLABLE(ip6_mtu); |