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\ Hypervisor Software File: netif-h.fth
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id: @(#)netif-h.fth 1.1 04/09/07
purpose:
copyright: Copyright 2004 Sun Microsystems, Inc.  All Rights Reserved
copyright: Use is subject to license terms.

headerless

d# 6   constant MAX_HWADDR_LEN	\ Largest hardware address length

\ IANA assigned ARP hardware types
1      constant HWTYPE_ETHER	\ Ethernet

\ Frame types
h#  800 constant IP_TYPE	\ Internet Protocol, v4
h#  806 constant ARP_TYPE	\ Address Resolution Protocol
h# 8035 constant RARP_TYPE	\ Reverse Address Resolution Protocol

\ Media Level information (MAC layer independent definitions) 
struct
   /c                  field  >if-htype		\ ARP hardware address type
   /c                  field  >if-hdrlen	\ Media header length
   /c                  field  >if-addrlen	\ Media address length
   MAX_HWADDR_LEN      field  >if-hwaddr	\ Hardware address
   MAX_HWADDR_LEN      field  >if-broadcast	\ Hardware broadcast address
   dup aligned over -  field  >if-pad		\ For alignment
   /n                  field  >if-output	\ Output routine
   /n                  field  >if-input		\ Input routine
   /n                  field  >if-showaddr	\ Address display routine
   /l                  field  >if-mtu		\ Interface MTU
constant /if-data

0 instance value  if-data

: if-htype@   ( -- n )  if-data >if-htype c@ ;
: if-hdrlen@  ( -- n )  if-data >if-hdrlen c@ ;
: if-addrlen@ ( -- n )  if-data >if-addrlen c@ ;
: if-mtu@     ( -- n )  if-data >if-mtu l@ ;

: if-frame-size@ ( -- n )  if-mtu@ if-hdrlen@ + ;

: if-hwaddr    ( -- adr )  if-data >if-hwaddr ;
: if-broadcast ( -- adr )  if-data >if-broadcast ;

: if-showaddr ( hwaddr -- )
   if-data >if-showaddr @ execute
;

: copy-hw-addr ( adr1 adr2 -- )  if-addrlen@ move ;
: hwaddr=      ( adr1 adr2 -- )  if-addrlen@ comp 0= ;

headers