ospfd: use workqueue for ospf_ase_calculate_route

* The ospf_ase_calculate_timer can take a long time to run, as it scales
  O(# of AS-External LSAs), in domains with lots of external routes.
  Fix this by using a work-queue for the per-LSA processing, thus splitting
  it up a bit.

* ospf_ase.h: (ospf_ase_calculate_route, ospf_ase_calculate_schedule) no
  need for these to be exported.
* ospf_spf.c: (ospf_spf_calculate_timer) ospf_ase_calculate_schedule is gone.
* ospfd.h: (struct ospf) add a work-queue for the AS-External route
  calculation.
* ospf_ase.c: (ospf_ase_calc_completion) completion func, for when
  ase-calculation is done. Also have to take care to see if the timer
  needs to be rescheduled, which is the case if ospf->ase_calc is set again
  but there is no timer scheduled.
  (ospf_ase_calc_process) workqueue processing function, calls to the
  existing ospf_ase_calculate_route.
  (ospf_ase_calculate_timer) add to work-queue, instead of calling
  ospf_ase_calculate_route directly.
  (ospf_ase_calculate_timer_add) do the job of ospf_ase_calculate_schedule
  which can be removed. Set flag so we can tell if a timer schedule comes
  in while the previous timer is running.

0 files changed, 0 insertions, 0 deletions