cvs commit: src/sys/net if_gre.c if_gre.h src/sys/netinet ip_gre.c

[Robert Watson]

rwatson     2004/03/22 08:04:43 PST

  FreeBSD src repository

  Modified files:
    sys/net              if_gre.c if_gre.h 
    sys/netinet          ip_gre.c 
  Log:
  Lock down global variables in if_gre:
  
  - Add gre_mtx to protect global softc list.
  - Hold gre_mtx over various list operations (insert, delete).
  - Centralize if_gre interface teardown in gre_destroy(), and call this
    from modevent unload and gre_clone_destroy().
  - Export gre_mtx to ip_gre.c, which walks the gre list to look up gre
    interfaces during encapsulation.  Add a wonking comment on how we need
    some sort of drain/reference count mechanism to keep gre references
    alive while in use and simultaneous destroy.
  
  This commit does not lockdown softc data, which follows in a future
  commit.
  
  Revision  Changes    Path
  1.21      +33 -8     src/sys/net/if_gre.c
  1.11      +1 -0      src/sys/net/if_gre.h
  1.16      +12 -1     src/sys/netinet/ip_gre.c