cvs commit: src/sys/netinet tcp_input.c tcp_syncache.c

[Andre Oppermann]

andre       2007-04-20 13:51:34 UTC

  FreeBSD src repository

  Modified files:
    sys/netinet          tcp_input.c tcp_syncache.c 
  Log:
  Simplifly syncache_expand() and clarify its semantics.  Zero is returned
  when the ACK is invalid and doesn't belong to any registered connection,
  either in syncache or through SYN cookies.  True but a NULL struct socket
  is returned when the 3WHS completed but the socket could not be created
  due to insufficient resources or limits reached.
  
  For both cases an RST is sent back in tcp_input().
  
  A logic error leading to a panic is fixed where syncache_expand() would
  free the mbuf on socket allocation failure but tcp_input() later supplies
  it to tcp_dropwithreset() to issue a RST to the peer.
  
  Reported by:    kris (the panic)
  
  Revision  Changes    Path
  1.337     +8 -8      src/sys/netinet/tcp_input.c
  1.113     +4 -17     src/sys/netinet/tcp_syncache.c