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;;          GNU GENERAL PUBLIC LICENSE                             ;;
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;;          GNU GENERAL PUBLIC LICENSE                             ;;
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;;             Version 2, June 1991                                ;;
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;;             Version 2, June 1991                                ;;
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;;                                                                 ;;
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;;                                                                 ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 1529 $
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$Revision: 1530 $
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MAX_FRAGMENTS	equ 64
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MAX_FRAGMENTS	equ 64
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				rb  2  ; to match ethernet header size          ; TODO: fix this hack
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				rb  2  ; to match ethernet header size          ; TODO: fix this hack
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	.Data:			       ; Ip header begins here (we will need the IP header to re-construct the complete packet)
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	.Data:			       ; Ip header begins here (we will need the IP header to re-construct the complete packet)
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ends
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ends
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align 4
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uglobal
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	IP_LIST 	rd  MAX_IP
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	SUBNET_LIST	rd  MAX_IP
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	DNS_LIST	rd  MAX_IP
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	GATEWAY_LIST	rd  MAX_IP
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	IP_PACKETS_TX	rd  MAX_IP
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	IP_PACKETS_RX	rd  MAX_IP
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	FRAGMENT_LIST	rb  MAX_FRAGMENTS*FRAGMENT_slot.size
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endg
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;-----------------------------------------------------------------
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;
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; IPv4_init
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;
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;  This function resets all IP variables
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;
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;-----------------------------------------------------------------
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macro	IPv4_init {
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	xor	eax, eax
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	mov	edi, IP_LIST
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	mov	ecx, 4*MAX_IP
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	rep	stosd
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	mov	edi, FRAGMENT_LIST
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	mov	ecx, FRAGMENT_slot.size*MAX_FRAGMENTS/4 + 2*MAX_IP
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	rep	stosd
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}
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;-----------------------------------------------------------------
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;
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; Decrease TimeToLive of all fragment slots
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;
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;-----------------------------------------------------------------
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macro IPv4_decrease_fragment_ttls {
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local	.loop
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	mov	esi, FRAGMENT_LIST
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	mov	ecx, MAX_FRAGMENTS
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  .loop:
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	cmp	[esi + FRAGMENT_slot.ttl], 0
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	je	.try_next
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	dec	[esi + FRAGMENT_slot.ttl]
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	jnz	.try_next
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	DEBUGF 1,"Fragment slot timed-out!\n"
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;;; TODO: clear all entry's of timed-out slot
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  .try_next:
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	add	esi, 4
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	loop	.loop
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}
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}
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align 4
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uglobal
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	IP_LIST 	rd  MAX_IP
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	SUBNET_LIST	rd  MAX_IP
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	DNS_LIST	rd  MAX_IP
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	GATEWAY_LIST	rd  MAX_IP
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	IP_PACKETS_TX	rd  MAX_IP
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	IP_PACKETS_RX	rd  MAX_IP
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	FRAGMENT_LIST	rb  MAX_FRAGMENTS*FRAGMENT_slot.size
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endg
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;-----------------------------------------------------------------
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;
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; IPv4_init
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;
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;  This function resets all IP variables
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;
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;-----------------------------------------------------------------
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macro	IPv4_init {
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	xor	eax, eax
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	mov	edi, IP_LIST
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	mov	ecx, 4*MAX_IP
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	rep	stosd
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	mov	edi, FRAGMENT_LIST
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	mov	ecx, FRAGMENT_slot.size*MAX_FRAGMENTS/4 + 2*MAX_IP
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	rep	stosd
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}
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;-----------------------------------------------------------------
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;
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; Decrease TimeToLive of all fragment slots
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;
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;-----------------------------------------------------------------
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macro IPv4_decrease_fragment_ttls {
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local	.loop
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	mov	esi, FRAGMENT_LIST
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	mov	ecx, MAX_FRAGMENTS
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  .loop:
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	cmp	[esi + FRAGMENT_slot.ttl], 0
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	je	.try_next
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	dec	[esi + FRAGMENT_slot.ttl]
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	jnz	.try_next
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	DEBUGF 1,"Fragment slot timed-out!\n"
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;;; TODO: clear all entry's of timed-out slot
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  .try_next:
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	add	esi, 4
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	loop	.loop
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}
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}
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;-----------------------------------------------------------------
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;-----------------------------------------------------------------
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	call	ARP_IP_to_MAC
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	call	ARP_IP_to_MAC
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	test	eax, 0xffff0000 	; error bits
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	test	eax, 0xffff0000 	; error bits
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	jnz	.arp_error
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	jnz	.arp_error
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  .continue:
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	push	ebx	; push the mac
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	push	ebx	; push the mac
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	push	ax
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	push	ax