cvs commit: src/sys/netinet in.c

[Robert Watson]

rwatson     2005-10-03 11:09:40 UTC

  FreeBSD src repository

  Modified files:
    sys/netinet          in.c 
  Log:
  Acquire Giant conditionally in in_addmulti() and in_delmulti() based on
  whether the interface being accessed is IFF_NEEDSGIANT or not.  This
  avoids lock order reversals when calling into the interface ioctl
  handler, which could potentially lead to deadlock.
  
  The long term solution is to eliminate non-MPSAFE network drivers.
  
  Discussed with: jhb
  MFC after:      1 week
  
  Revision  Changes    Path
  1.89      +9 -0      src/sys/netinet/in.c