tree b955bdf6f02ad700adb0bffd4bcd1c3fc0a20366
parent bc6cffd177f9266af38dba96a2cea06c1e7ff932
author Jamal Hadi Salim <hadi@cyberus.ca> 1213133134 -0700
committer David S. Miller <davem@davemloft.net> 1213133134 -0700

ipsec: pfkey should ignore events when no listeners

When pfkey has no km listeners, it still does a lot of work
before finding out there aint nobody out there.
If a tree falls in a forest and no one is around to hear it, does it make
a sound? In this case it makes a lot of noise:
With this short-circuit adding 10s of thousands of SAs using
netlink improves performance by ~10%.

Signed-off-by: Jamal Hadi Salim <hadi@cyberus.ca>
Signed-off-by: David S. Miller <davem@davemloft.net>