K 10
svn:author
V 7
glebius
K 8
svn:date
V 27
2012-02-14T17:35:44.448822Z
K 7
svn:log
V 1598
Merge netgraph related fixes and enhancements from head/. Revisions
merged: r223754,224031,226829,229003,230213,230480, 230486-230487,231585.

r223754 to ng_base:
  - Use refcount(9) API to manage node and hook refcounting.

r224031 to ng_socket:
  In ng_attach_cntl() first allocate things that may fail, and then
  do the rest of initialization. This simplifies code and fixes
  a double free in failure scenario.

r226829 to ng_base:
  - If KDB & NETGRAPH_DEBUG are on, print traces on discovered failed
    invariants.
  - Reduce tautology in NETGRAPH_DEBUG output.

r229003 to ng_base:
  style(9), whitespace and spelling nits.

r230213 to ng_socket:
  Remove some disabled NOTYET code. Probability of enabling it is low,
  if anyone wants, he/she can take it from svn.

r230480 to ng_base:
  Convert locks that protect name hash, ID hash and typelist from
  mutex(9) to rwlock(9) based locks.

  While here remove dropping lock when processing NGM_LISTNODES,
  and NGM_LISTTYPES generic commands. We don't need to drop it
  since memory allocation is done with M_NOWAIT.

r230486 to hashinit(9):
  Convert panic()s to KASSERT()s. This is an optimisation for
  hashdestroy() since in absence of INVARIANTS a compiler
  will drop the entire for() cycle.

r230487,r231585 to ng_socket:
  Provide a findhook method for ng_socket(4). The node stores a
  hash with names of its hooks. It starts with size of 16, and
  grows when number of hooks reaches twice the current size. A
  failure to grow (memory is allocated with M_NOWAIT) isn't
  fatal, however.

Tested by:	Eugene Grosbein, Mike Tancsa

END