cvs commit: src/sys/netipx ipx_pcb.c ipx_pcb.h ipx_usrreq.c spx_usrreq.c

[Robert Watson]

rwatson     2006-03-25 17:28:42 UTC

  FreeBSD src repository

  Modified files:
    sys/netipx           ipx_pcb.c ipx_pcb.h ipx_usrreq.c 
                         spx_usrreq.c 
  Log:
  Rework IPX/SPX socket and pcb reference model:
  
  - Introduce invariant that all IPX/SPX sockets will have valid so_pcb
    pointers to ipxpcb structures, and that for SPX, the control block
    pointer will always be valid.  Don't attempt to free the socket or
    pcb at various odd points, such as disconnect.
  
  - Add a new ipxpcb flag, IPXP_DROPPED, which will be set in place of
    freeing PCB's so that this invariant can be maintained.  This flag
    is now checked instead of a NULL check in various socket protocol
    calls.
  
  - Introduce many assertions that this invariant holds.
  
  - Various pieces of code, such as the SPX timer code, no longer needs
    to jump through hoops in case it frees a PCB while running.
  
  - Break out ipx_pcbfree() from ipx_pcbdetach().  Likewise
    spx_pcbdetach().
  
  - Comment on some SMP-related limitations to the SPX code.
  
  - Update copyrights.
  
  MFC after:      1 month
  
  Revision  Changes    Path
  1.45      +13 -5     src/sys/netipx/ipx_pcb.c
  1.25      +11 -8     src/sys/netipx/ipx_pcb.h
  1.53      +22 -11    src/sys/netipx/ipx_usrreq.c
  1.76      +100 -68   src/sys/netipx/spx_usrreq.c