cvs commit: src/sys/net if.c src/sys/netinet in.c in.h

[Robert Watson]

rwatson     2005-09-18 17:36:29 UTC

  FreeBSD src repository

  Modified files:
    sys/net              if.c 
    sys/netinet          in.c in.h 
  Log:
  Take a first cut at cleaning up ifnet removal and multicast socket
  panics, which occur when stale ifnet pointers are left in struct
  moptions hung off of inpcbs:
  
  - Add in_ifdetach(), which matches in6_ifdetach(), and allows the
    protocol to perform early tear-down on the interface early in
    if_detach().
  
  - Annotate that if_detach() needs careful consideration.
  
  - Remove calls to in_pcbpurgeif0() in the handling of SIOCDIFADDR --
    this is not the place to detect interface removal!  This also
    removes what is basically a nasty (and now unnecessary) hack.
  
  - Invoke in_pcbpurgeif0() from in_ifdetach(), in both raw and UDP
    IPv4 sockets.
  
  It is now possible to run the msocket_ifnet_remove regression test
  using HEAD without panicking.
  
  MFC after:      3 days
  
  Revision  Changes    Path
  1.247     +7 -0      src/sys/net/if.c
  1.88      +12 -8     src/sys/netinet/in.c
  1.92      +1 -0      src/sys/netinet/in.h