cvs commit: src/sys/netgraph netgraph.h ng_base.c ng_iface.c

Alexander Motin mav at
Wed Feb 6 13:37:45 PST 2008

mav         2008-02-06 21:37:45 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_6)
    sys/netgraph         netgraph.h ng_base.c ng_iface.c 
  Massive sync with HEAD:
  - Instead of direct manipulation on queue and worklist mutexes, bring macros
  for doing this job. This change will make it easy to migrate from using
  spinning locks to adaptive ones.
  - We don't need spinning locks here. Change them to the adaptive mutexes. This
  change should bring no performance decrease, as it did not in my tests.
  - Despite several examples in the kernel, the third argument of
  sysctl_handle_int is not sizeof the int type you want to export.
  - Implement stack protection based on GET_STACK_USAGE() macro.
  This fixes system panics possible with complicated netgraph setups
  and allows to avoid unneded extra queueing for stack unwrapping.
  - Cleanup and tune ng_snd_item() function as it is one of the
  most busy netgraph functions.
  Revision    Changes    Path   +23 -0     src/sys/netgraph/netgraph.h  +140 -174  src/sys/netgraph/ng_base.c    +1 -0      src/sys/netgraph/ng_iface.c

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