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| author | David S. Miller <davem@davemloft.net> | 2010-12-15 00:01:14 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-15 00:01:14 +0300 |
| commit | d33e455337ea2c71d09d7f4367d6ad6dd32b6965 (patch) | |
| tree | d1b35b1be5ab73df6f7e57b86a2e68fad2990adf /net/xfrm | |
| parent | 9fe146aef44afe5ec677d8150b6ae94e09b773f7 (diff) | |
| download | linux-d33e455337ea2c71d09d7f4367d6ad6dd32b6965.tar.xz | |
net: Abstract default MTU metric calculation behind an accessor.
Like RTAX_ADVMSS, make the default calculation go through a dst_ops
method rather than caching the computation in the routing cache
entries.
Now dst metrics are pretty much left as-is when new entries are
created, thus optimizing metric sharing becomes a real possibility.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/xfrm')
| -rw-r--r-- | net/xfrm/xfrm_policy.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c index 36936c8ae961..8b3ef404c794 100644 --- a/net/xfrm/xfrm_policy.c +++ b/net/xfrm/xfrm_policy.c @@ -2366,6 +2366,11 @@ static unsigned int xfrm_default_advmss(const struct dst_entry *dst) return dst_metric_advmss(dst->path); } +static unsigned int xfrm_default_mtu(const struct dst_entry *dst) +{ + return dst_mtu(dst->path); +} + int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo) { struct net *net; @@ -2385,6 +2390,8 @@ int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo) dst_ops->check = xfrm_dst_check; if (likely(dst_ops->default_advmss == NULL)) dst_ops->default_advmss = xfrm_default_advmss; + if (likely(dst_ops->default_mtu == NULL)) + dst_ops->default_mtu = xfrm_default_mtu; if (likely(dst_ops->negative_advice == NULL)) dst_ops->negative_advice = xfrm_negative_advice; if (likely(dst_ops->link_failure == NULL)) |