ozaki-r 3745c9bdf3 Lock IFQ operations when NET_MPSAFE
- Introduce NET_MPSAFE
  - not defined by default
- Add ifq_lock to protect ifnet#if_snd
- Initialize ifq_lock and lock IFQ operations
  when NET_MPSAFE

When NET_MPSAFE isn't defined, this modification
doesn't change its behavior and adds trivial
performance overheads.

Discussed with matt@ on tech-net
2014-07-01 10:16:02 +00:00
..
2014-07-01 10:16:02 +00:00