forked from KolibriOS/kolibrios
IPv4: Pre-calculate broadcast address once.
+ some stubs for IPv6 git-svn-id: svn://kolibrios.org@2731 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
hidnplayr
parent
ead399f144
commit
3760cb5564
@ -1,6 +1,6 @@
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; ;;
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;; Copyright (C) KolibriOS team 2004-2011. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2004-2012. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; ;;
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;; IPv4.INC ;;
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;; IPv4.INC ;;
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@ -52,7 +52,7 @@ struct FRAGMENT_entry ; This structure will replace the etherne
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PrevPtr dd ? ; Pointer to previous fragment entry (-1 for first packet)
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PrevPtr dd ? ; Pointer to previous fragment entry (-1 for first packet)
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NextPtr dd ? ; Pointer to next fragment entry (-1 for last packet)
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NextPtr dd ? ; Pointer to next fragment entry (-1 for last packet)
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Owner dd ? ; Pointer to structure of driver
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Owner dd ? ; Pointer to structure of driver
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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 ;;; FIXME
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; Ip header begins here (we will need the IP header to re-construct the complete packet)
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; 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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@ -64,6 +64,7 @@ uglobal
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SUBNET_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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DNS_LIST rd MAX_IP
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GATEWAY_LIST rd MAX_IP
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GATEWAY_LIST rd MAX_IP
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BROADCAST_LIST rd MAX_IP
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IP_PACKETS_TX 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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IP_PACKETS_RX rd MAX_IP
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@ -83,11 +84,7 @@ macro IPv4_init {
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xor eax, eax
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xor eax, eax
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mov edi, IP_LIST
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mov edi, IP_LIST
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mov ecx, 4*MAX_IP
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mov ecx, 7*MAX_IP + (sizeof.FRAGMENT_slot*MAX_FRAGMENTS)/4
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rep stosd
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mov edi, FRAGMENT_LIST
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mov ecx, sizeof.FRAGMENT_slot*MAX_FRAGMENTS/4 + 2*MAX_IP
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rep stosd
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rep stosd
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}
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}
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@ -100,20 +97,27 @@ macro IPv4_init {
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;-----------------------------------------------------------------
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;-----------------------------------------------------------------
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macro IPv4_decrease_fragment_ttls {
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macro IPv4_decrease_fragment_ttls {
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local .loop
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local .loop, .next
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mov esi, FRAGMENT_LIST
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mov esi, FRAGMENT_LIST
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mov ecx, MAX_FRAGMENTS
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mov ecx, MAX_FRAGMENTS
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.loop:
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.loop:
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cmp [esi + FRAGMENT_slot.ttl], 0
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cmp [esi + FRAGMENT_slot.ttl], 0
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je .try_next
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je .next
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dec [esi + FRAGMENT_slot.ttl]
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dec [esi + FRAGMENT_slot.ttl]
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jnz .try_next
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jz .died
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.next:
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add esi, sizeof.FRAGMENT_slot
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dec ecx
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jnz .loop
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jmp .done
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.died:
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DEBUGF 1,"Fragment slot timed-out!\n"
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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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;;; TODO: clear all entry's of timed-out slot
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.try_next:
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jmp .next
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add esi, 4
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loop .loop
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.done:
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}
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}
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@ -186,7 +190,7 @@ macro IPv4_checksum ptr {
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;
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;
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; IPv4_input:
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; IPv4_input:
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;
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;
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; Will check if IP Packet isnt damaged
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; Will check if IPv4 Packet isnt damaged
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; and call appropriate handler. (TCP/UDP/ICMP/..)
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; and call appropriate handler. (TCP/UDP/ICMP/..)
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;
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;
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; It will also re-construct fragmented packets
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; It will also re-construct fragmented packets
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@ -194,27 +198,23 @@ macro IPv4_checksum ptr {
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; IN: Pointer to buffer in [esp]
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; IN: Pointer to buffer in [esp]
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; size of buffer in [esp+4]
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; size of buffer in [esp+4]
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; pointer to device struct in ebx
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; pointer to device struct in ebx
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; pointer to IP header in edx
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; pointer to IPv4 header in edx
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; size of IP packet in ecx
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; size of IPv4 packet in ecx
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; OUT: /
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; OUT: /
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;
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;
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;-----------------------------------------------------------------
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;-----------------------------------------------------------------
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align 4
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align 4
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IPv4_input: ; TODO: add code for raw sockets
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IPv4_input: ; TODO: add IPv4 raw sockets support
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DEBUGF 1,"IPv4_input, packet from: %u.%u.%u.%u ",\
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DEBUGF 1,"IPv4_input, packet from: %u.%u.%u.%u ",\
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[edx + IPv4_header.SourceAddress]:1,[edx + IPv4_header.SourceAddress + 1]:1,[edx + IPv4_header.SourceAddress + 2]:1,[edx + IPv4_header.SourceAddress + 3]:1
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[edx + IPv4_header.SourceAddress + 0]:1,[edx + IPv4_header.SourceAddress + 1]:1,\
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[edx + IPv4_header.SourceAddress + 2]:1,[edx + IPv4_header.SourceAddress + 3]:1
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DEBUGF 1,"to: %u.%u.%u.%u\n",\
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DEBUGF 1,"to: %u.%u.%u.%u\n",\
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[edx + IPv4_header.DestinationAddress]:1,[edx + IPv4_header.DestinationAddress + 1]:1,[edx + IPv4_header.DestinationAddress + 2]:1,[edx + IPv4_header.DestinationAddress + 3]:1
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[edx + IPv4_header.DestinationAddress + 0]:1,[edx + IPv4_header.DestinationAddress + 1]:1,\
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[edx + IPv4_header.DestinationAddress + 2]:1,[edx + IPv4_header.DestinationAddress + 3]:1
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;-------------------------------------------
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; Check if the packet still has time to live
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cmp byte [edx + IPv4_header.TimeToLive], 0
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je .dump
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;-------------------------------
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;-------------------------------
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; Now, re-calculate the checksum
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; re-calculate the checksum
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IPv4_checksum edx
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IPv4_checksum edx
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jnz .dump ; if checksum isn't valid then dump packet
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jnz .dump ; if checksum isn't valid then dump packet
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@ -229,38 +229,35 @@ IPv4_input: ; TODO: add code for raw sockets
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; check if it matches local ip
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; check if it matches local ip
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mov eax, [IP_LIST+edi]
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cmp [edx + IPv4_header.DestinationAddress], eax
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je .ip_ok
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; check for broadcast
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mov eax, [SUBNET_LIST+edi]
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not eax
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or eax, [IP_LIST+edi]
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cmp [edx + IPv4_header.DestinationAddress], eax
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je .ip_ok
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; or a special broadcast
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cmp [edx + IPv4_header.DestinationAddress], -1
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je .ip_ok
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; maybe it's a multicast then
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mov eax, [edx + IPv4_header.DestinationAddress]
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mov eax, [edx + IPv4_header.DestinationAddress]
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and eax, 0xff000000
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cmp eax, [IP_LIST+edi]
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; cmp eax, 224 shl 24
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; je .ip_ok
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; or a loopback address
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cmp eax, 127 shl 24
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je .ip_ok
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je .ip_ok
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; or it's not meant for us..
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; check for broadcast (IP or (not SUBNET))
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DEBUGF 2,"Destination address does not match!\n"
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cmp eax, [BROADCAST_LIST+edi]
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je .ip_ok
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; or a special broadcast (255.255.255.255)
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cmp eax, 0xffffffff
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je .ip_ok
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; maybe it's a multicast (224.0.0.0/4)
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and eax, 0x0fffffff
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cmp eax, 224
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je .ip_ok
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; or a loopback address (127.0.0.0/8)
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and eax, 0x00ffffff
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cmp eax, 127
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je .ip_ok
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; or it's just not meant for us.. :(
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DEBUGF 2,"IPv4_input - Destination address does not match!\n"
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jmp .dump
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jmp .dump
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;------------------------
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;------------------------
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@ -304,10 +301,10 @@ IPv4_input: ; TODO: add code for raw sockets
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cmp al, IP_PROTO_ICMP
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cmp al, IP_PROTO_ICMP
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je ICMP_input
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je ICMP_input
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DEBUGF 2,"unknown Internet protocol: %u\n", al
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DEBUGF 2,"IPv4_input - unknown protocol: %u\n", al
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.dump:
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.dump:
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DEBUGF 2,"IP_Handler - dumping\n"
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DEBUGF 2,"IPv4_input - dumping\n"
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; inc [dumped_rx_count]
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; inc [dumped_rx_count]
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call kernel_free
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call kernel_free
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add esp, 4 ; pop (balance stack)
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add esp, 4 ; pop (balance stack)
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@ -499,16 +496,10 @@ IPv4_input: ; TODO: add code for raw sockets
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mov edx, eax
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mov edx, eax
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mov [edx + IPv4_header.TotalLength], cx
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mov [edx + IPv4_header.TotalLength], cx
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add esp, 8
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add esp, 8
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xchg cl, ch
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push ecx
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xchg cl, ch ;
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push eax
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push ecx ;;;;
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push eax ;;;;
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; mov esi, edx ; This prints the IP packet to the debug board (usefull when using serial output debug..)
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; ;
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; packet_to_debug
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jmp .handle_it ; edx = buf ptr, ecx = size, [esp] buf ptr, [esp+4], total size, ebx=device ptr
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jmp .handle_it ; edx = buf ptr, ecx = size, [esp] buf ptr, [esp+4], total size, ebx=device ptr
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.destroy_slot_pop:
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.destroy_slot_pop:
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@ -527,7 +518,7 @@ IPv4_input: ; TODO: add code for raw sockets
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; find fragment slot
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; find fragment slot
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;
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;
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; IN: pointer to fragmented packet in edx
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; IN: pointer to fragmented packet in edx
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; OUT: pointer to slot in edi, -1 on error
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; OUT: pointer to slot in esi, -1 on error
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;
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;
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;-----------------------------------------------------------------
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;-----------------------------------------------------------------
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align 4
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align 4
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@ -885,7 +876,8 @@ IPv4_dest_to_dev:
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je .found_it
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je .found_it
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.next:
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.next:
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add edi, 4
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add edi, 4
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loop .loop
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dec ecx
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jnz .loop
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.invalid:
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.invalid:
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xor edi, edi ; if none found, use device 0 as default device
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xor edi, edi ; if none found, use device 0 as default device
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@ -967,6 +959,13 @@ IPv4_api:
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.write_ip:
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.write_ip:
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mov [IP_LIST + eax], ecx
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mov [IP_LIST + eax], ecx
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; pre-calculate the local broadcast address
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mov ebx, [SUBNET_LIST + eax]
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not ebx
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or ecx, ebx
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mov [BROADCAST_LIST + eax], ecx
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xor eax, eax
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xor eax, eax
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ret
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ret
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@ -985,6 +984,13 @@ IPv4_api:
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.write_subnet:
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.write_subnet:
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mov [SUBNET_LIST + eax], ecx
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mov [SUBNET_LIST + eax], ecx
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; pre-calculate the local broadcast address
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mov ebx, [IP_LIST + eax]
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not ecx
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or ecx, ebx
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mov [BROADCAST_LIST + eax], ecx
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xor eax, eax
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xor eax, eax
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ret
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ret
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@ -0,0 +1,109 @@
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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;; Copyright (C) KolibriOS team 2012. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;; IPv6.INC ;;
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;; ;;
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;; Part of the tcp/ip network stack for KolibriOS ;;
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;; ;;
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;; Written by hidnplayr@kolibrios.org ;;
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;; ;;
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;; GNU GENERAL PUBLIC LICENSE ;;
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;; Version 2, June 1991 ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision$
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struct IPv6_header
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VersionTrafficFlow dd ? ; Version[0-3], Traffic class[4-11], Flow Label [12-31]
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PayloadLength dw ? ; 16 bits, unsigned length of payload (extension headers are part of this)
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NextHeader db ? ; Values are same as in IPv4 'Protocol' field
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HopLimit db ? ; Decremented by every node, packet is discarded when it reaches 0
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SourceAddress rd 4 ; 128-bit addresses
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DestinationAddress rd 4 ;
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ends
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;-----------------------------------------------------------------
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;
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; IPv6_input:
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;
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; Will check if IPv6 Packet isnt damaged
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; and call appropriate handler. (TCP/UDP/ICMP/..)
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;
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; It will also re-construct fragmented packets
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;
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; IN: Pointer to buffer in [esp]
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; size of buffer in [esp+4]
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; pointer to device struct in ebx
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; pointer to IPv6 header in edx
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; size of IPv6 packet in ecx
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; OUT: /
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;
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;-----------------------------------------------------------------
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align 4
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IPv6_input:
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DEBUGF 1,"IPv6_input\nfrom: %x:%x:%x:%x:%x:%x:%x:%x\n",\
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[edx + IPv6_header.SourceAddress + 0]:4,[edx + IPv6_header.SourceAddress + 2]:4,\
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[edx + IPv6_header.SourceAddress + 4]:4,[edx + IPv6_header.SourceAddress + 6]:4,\
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[edx + IPv6_header.SourceAddress + 8]:4,[edx + IPv6_header.SourceAddress + 10]:4,\
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[edx + IPv6_header.SourceAddress + 12]:4,[edx + IPv6_header.SourceAddress + 14]:4
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DEBUGF 1,"to: %x:%x:%x:%x:%x:%x:%x:%x\n",\
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[edx + IPv6_header.DestinationAddress + 0]:4,[edx + IPv6_header.DestinationAddress + 2]:4,\
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[edx + IPv6_header.DestinationAddress + 4]:4,[edx + IPv6_header.DestinationAddress + 6]:4,\
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[edx + IPv6_header.DestinationAddress + 8]:4,[edx + IPv6_header.DestinationAddress + 10]:4,\
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[edx + IPv6_header.DestinationAddress + 12]:4,[edx + IPv6_header.DestinationAddress + 14]:4
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sub ecx, sizeof.IPv6_header
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jb .dump
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movzx eax, [edx + IPv6.PayloadLength]
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xchg al, ah
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cmp eax, ecx
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jb .dump
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;-------------------------------------------------------------------
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; No, it's just a regular IP packet, pass it to the higher protocols
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.handle_it:
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movzx esi, [edx + IPv6_header.VersionAndIHL] ; Calculate Header length by using IHL field
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and esi, 0x0000000f ;
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shl esi, 2 ;
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movzx ecx, [edx + IPv6_header.TotalLength] ; Calculate length of encapsulated Packet
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xchg cl, ch ;
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sub ecx, esi ;
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lea edi, [edx + IPv6_header.SourceAddress] ; make edi ptr to source and dest IPv6 address
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mov al, [edx + IPv6_header.Protocol]
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add esi, edx ; make esi ptr to data
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; cmp al, IP_PROTO_TCP
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; je TCP_input
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; cmp al, IP_PROTO_UDP
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; je UDP_input
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; cmp al, IP_PROTO_ICMP
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||||||
|
; je ICMP_input
|
||||||
|
|
||||||
|
DEBUGF 2,"IPv6_input - unknown protocol: %u\n", al
|
||||||
|
|
||||||
|
.dump:
|
||||||
|
DEBUGF 2,"IPv6_input - dumping\n"
|
||||||
|
|
||||||
|
add esp, 4
|
||||||
|
call KernelFree
|
||||||
|
ret
|
||||||
@ -16,6 +16,8 @@
|
|||||||
|
|
||||||
$Revision$
|
$Revision$
|
||||||
|
|
||||||
|
ETH_FRAME_MINIMUM = 60
|
||||||
|
|
||||||
struct ETH_header
|
struct ETH_header
|
||||||
|
|
||||||
DstMAC dp ? ; destination MAC-address
|
DstMAC dp ? ; destination MAC-address
|
||||||
@ -24,8 +26,6 @@ struct ETH_header
|
|||||||
|
|
||||||
ends
|
ends
|
||||||
|
|
||||||
ETH_FRAME_MINIMUM = 60
|
|
||||||
|
|
||||||
struct ETH_DEVICE NET_DEVICE
|
struct ETH_DEVICE NET_DEVICE
|
||||||
|
|
||||||
set_mode dd ?
|
set_mode dd ?
|
||||||
@ -77,9 +77,15 @@ ETH_input:
|
|||||||
cmp ax, ETHER_ARP
|
cmp ax, ETHER_ARP
|
||||||
je ARP_input
|
je ARP_input
|
||||||
|
|
||||||
|
; cmp ax, ETHER_IPv6
|
||||||
|
; je IPv6_input
|
||||||
|
|
||||||
; cmp ax, ETHER_PPP_DISCOVERY
|
; cmp ax, ETHER_PPP_DISCOVERY
|
||||||
; je PPPoE_discovery_input
|
; je PPPoE_discovery_input
|
||||||
|
|
||||||
|
; cmp ax, ETHER_PPP_SESSION
|
||||||
|
; je PPPoE_session_input
|
||||||
|
|
||||||
DEBUGF 2,"Unknown ethernet packet type %x\n", ax
|
DEBUGF 2,"Unknown ethernet packet type %x\n", ax
|
||||||
|
|
||||||
.dump:
|
.dump:
|
||||||
|
|||||||
@ -919,10 +919,26 @@ SOCKET_get_opt:
|
|||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
;-----------------------------------------------------------------
|
||||||
|
;
|
||||||
|
; SOCKET_set_options
|
||||||
|
;
|
||||||
|
; IN: ecx = socket number
|
||||||
|
; edx = pointer to the options:
|
||||||
|
; dd level, optname, optval, optlen
|
||||||
|
; OUT: -1 on error
|
||||||
|
;
|
||||||
|
;-----------------------------------------------------------------
|
||||||
align 4
|
align 4
|
||||||
SOCKET_set_opt:
|
SOCKET_set_opt:
|
||||||
|
|
||||||
|
DEBUGF 1,"SOCKET_set_opt\n"
|
||||||
|
|
||||||
|
call SOCKET_num_to_ptr
|
||||||
|
jz s_error
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
ret
|
ret
|
||||||
|
|
||||||
|
|
||||||
|
|||||||
@ -39,6 +39,7 @@ MAX_EPHEMERAL_PORT = 61000
|
|||||||
; Ethernet protocol numbers
|
; Ethernet protocol numbers
|
||||||
ETHER_ARP = 0x0608
|
ETHER_ARP = 0x0608
|
||||||
ETHER_IPv4 = 0x0008
|
ETHER_IPv4 = 0x0008
|
||||||
|
ETHER_IPv6 = 0xDD86
|
||||||
ETHER_PPP_DISCOVERY = 0x6388
|
ETHER_PPP_DISCOVERY = 0x6388
|
||||||
ETHER_PPP_SESSION = 0x6488
|
ETHER_PPP_SESSION = 0x6488
|
||||||
|
|
||||||
@ -103,7 +104,14 @@ ECONNRESET = 52
|
|||||||
ETIMEDOUT = 60
|
ETIMEDOUT = 60
|
||||||
ECONNABORTED = 53
|
ECONNABORTED = 53
|
||||||
|
|
||||||
|
; Api protocol numbers
|
||||||
|
API_ETH = 0
|
||||||
|
API_IPv4 = 1
|
||||||
|
API_ICMP = 2
|
||||||
|
API_UDP = 3
|
||||||
|
API_TCP = 4
|
||||||
|
API_ARP = 5
|
||||||
|
API_PPPOE = 6
|
||||||
|
|
||||||
struct NET_DEVICE
|
struct NET_DEVICE
|
||||||
|
|
||||||
@ -159,6 +167,7 @@ include "ethernet.inc"
|
|||||||
|
|
||||||
include "ARP.inc"
|
include "ARP.inc"
|
||||||
include "IPv4.inc"
|
include "IPv4.inc"
|
||||||
|
;include "IPv6.inc"
|
||||||
|
|
||||||
include "icmp.inc"
|
include "icmp.inc"
|
||||||
include "udp.inc"
|
include "udp.inc"
|
||||||
@ -197,10 +206,10 @@ stack_init:
|
|||||||
mov ecx, (MAX_NET_DEVICES + 2)
|
mov ecx, (MAX_NET_DEVICES + 2)
|
||||||
rep stosd
|
rep stosd
|
||||||
|
|
||||||
; SLIP_init
|
|
||||||
; PPPOE_init
|
; PPPOE_init
|
||||||
|
|
||||||
IPv4_init
|
IPv4_init
|
||||||
|
; IPv6_init
|
||||||
ICMP_init
|
ICMP_init
|
||||||
|
|
||||||
ARP_init
|
ARP_init
|
||||||
@ -661,7 +670,7 @@ sys_network: ; FIXME: make default device easily accessible
|
|||||||
|
|
||||||
;----------------------------------------------------------------
|
;----------------------------------------------------------------
|
||||||
;
|
;
|
||||||
; System function to work with protocols (75)
|
; System function to work with protocols (76)
|
||||||
;
|
;
|
||||||
;----------------------------------------------------------------
|
;----------------------------------------------------------------
|
||||||
align 4
|
align 4
|
||||||
@ -680,25 +689,25 @@ sys_protocols:
|
|||||||
mov eax, ebx ; set ax to protocol number
|
mov eax, ebx ; set ax to protocol number
|
||||||
shr eax, 16 ;
|
shr eax, 16 ;
|
||||||
|
|
||||||
cmp ax, IP_PROTO_IP
|
cmp ax, API_ETH
|
||||||
je IPv4_api
|
|
||||||
|
|
||||||
cmp ax, IP_PROTO_ICMP
|
|
||||||
je ICMP_api
|
|
||||||
|
|
||||||
cmp ax, IP_PROTO_UDP
|
|
||||||
je UDP_api
|
|
||||||
|
|
||||||
cmp ax, IP_PROTO_TCP
|
|
||||||
je TCP_api
|
|
||||||
|
|
||||||
cmp ax, ETHER_ARP
|
|
||||||
je ARP_api
|
|
||||||
|
|
||||||
cmp ax, 1337 ;;;;;
|
|
||||||
je ETH_api
|
je ETH_api
|
||||||
|
|
||||||
; cmp ax, API_PPPoE
|
cmp ax, API_IPv4
|
||||||
|
je IPv4_api
|
||||||
|
|
||||||
|
cmp ax, API_ICMP
|
||||||
|
je ICMP_api
|
||||||
|
|
||||||
|
cmp ax, API_UDP
|
||||||
|
je UDP_api
|
||||||
|
|
||||||
|
cmp ax, API_TCP
|
||||||
|
je TCP_api
|
||||||
|
|
||||||
|
cmp ax, API_ARP
|
||||||
|
je ARP_api
|
||||||
|
|
||||||
|
; cmp ax, API_PPPOE
|
||||||
; je PPPoE_api
|
; je PPPoE_api
|
||||||
|
|
||||||
add esp, 4 ; if we reached here, no function was called, so we need to balance stack
|
add esp, 4 ; if we reached here, no function was called, so we need to balance stack
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user