cvs commit: src/sys/dev/em if_em.c if_em.h

[Jack F Vogel]

jfv         2007-11-07 01:33:29 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_6)
    sys/dev/em           if_em.c if_em.h 
  Log:
  This delta addresses some users experiencing watchdogs under load with
  the last driver version. I suspect sheduling to be at the bottom of it,
  but this version fixes it by:
          - Making FAST interrupt handling off by default, if you want
          to use it #define EM_FAST_IRQ in the Makefile.
          - Add dual locks, one for the TX subsystem, the other CORE
          for things like init and interface managment.
          - Add cleaner MSI/X setup code.
          - If using FAST interrupts there is now a mechanism in the
          watchdog routine to kick off TX cleanups if they have not
          been scheduled.
  
  I think everyone will be happier with this change.
  
  Revision   Changes    Path
  1.65.2.28  +327 -144  src/sys/dev/em/if_em.c
  1.32.2.8   +16 -10    src/sys/dev/em/if_em.h