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authorDavid S. Miller <davem@davemloft.net>2010-12-14 16:01:14 -0500
committerDavid S. Miller <davem@davemloft.net>2010-12-14 16:01:14 -0500
commitd33e455337ea2c71d09d7f4367d6ad6dd32b6965 (patch)
treed1b35b1be5ab73df6f7e57b86a2e68fad2990adf /net/xfrm
parent9fe146aef44afe5ec677d8150b6ae94e09b773f7 (diff)
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.c7
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)
2366 return dst_metric_advmss(dst->path); 2366 return dst_metric_advmss(dst->path);
2367} 2367}
2368 2368
2369static unsigned int xfrm_default_mtu(const struct dst_entry *dst)
2370{
2371 return dst_mtu(dst->path);
2372}
2373
2369int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo) 2374int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo)
2370{ 2375{
2371 struct net *net; 2376 struct net *net;
@@ -2385,6 +2390,8 @@ int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo)
2385 dst_ops->check = xfrm_dst_check; 2390 dst_ops->check = xfrm_dst_check;
2386 if (likely(dst_ops->default_advmss == NULL)) 2391 if (likely(dst_ops->default_advmss == NULL))
2387 dst_ops->default_advmss = xfrm_default_advmss; 2392 dst_ops->default_advmss = xfrm_default_advmss;
2393 if (likely(dst_ops->default_mtu == NULL))
2394 dst_ops->default_mtu = xfrm_default_mtu;
2388 if (likely(dst_ops->negative_advice == NULL)) 2395 if (likely(dst_ops->negative_advice == NULL))
2389 dst_ops->negative_advice = xfrm_negative_advice; 2396 dst_ops->negative_advice = xfrm_negative_advice;
2390 if (likely(dst_ops->link_failure == NULL)) 2397 if (likely(dst_ops->link_failure == NULL))