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Rev 2607 Rev 2614
Line 14... Line 14...
14 
;;          GNU GENERAL PUBLIC LICENSE                             ;;
 14 
;;          GNU GENERAL PUBLIC LICENSE                             ;;
15 
;;             Version 2, June 1991                                ;;
 15 
;;             Version 2, June 1991                                ;;
16 
;;                                                                 ;;
 16 
;;                                                                 ;;
17 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 17 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
Line 18... Line 18...
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 18 
 
Line 19... Line 19...
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$Revision: 2607 $
 19 
$Revision: 2614 $
20 
 
 20 
 
21 
MAX_FRAGMENTS   equ 64
 21 
MAX_FRAGMENTS           = 64
Line 22... Line 22...
22 
MAX_IP          equ MAX_NET_DEVICES
 22 
MAX_IP                  = MAX_NET_DEVICES
Line 23... Line 23...
23 
IP_MAX_INTERFACES   equ MAX_IP
 23 
IP_MAX_INTERFACES       = MAX_IP
24 
 
 24 
 
Line 192... Line 192...
192 
;  It will also re-construct fragmented packets
 192 
;  It will also re-construct fragmented packets
193 
;
 193 
;
194 
;  IN:  Pointer to buffer in [esp]
 194 
;  IN:  Pointer to buffer in [esp]
195 
;       size of buffer in [esp+4]
 195 
;       size of buffer in [esp+4]
196 
;       pointer to device struct in ebx
 196 
;       pointer to device struct in ebx
197 
;       pointer to IP Packet data in edx
 197 
;       pointer to IP header in edx
- 
 
 198 
;       size of IP packet in ecx
198 
;  OUT: /
 199 
;  OUT: /
199 
;
 200 
;
200 
;-----------------------------------------------------------------
 201 
;-----------------------------------------------------------------
201 
align 4
 202 
align 4
202 
IPv4_input:      ; TODO: implement handler for IP options
 203 
IPv4_input:      ; TODO: implement handler for IP options
Line 941... Line 942...
941 
;
 942 
;
942 
; OUT:
 943 
; OUT:
943 
;
 944 
;
944 
;---------------------------------------------------------------------------
 945 
;---------------------------------------------------------------------------
945 
align 4
 946 
align 4
946 
IPv4_API:
 947 
IPv4_api:
Line 947... Line 948...
947 
 
 948 
 
948 
        movzx   eax, bh
 949 
        movzx   eax, bh
Line 949... Line 950...
949 
        shl     eax, 2
 950 
        shl     eax, 2
950 
 
 951 
 
951 
        test    bl, bl
 952 
        and     ebx, 0xff
952 
        jz      .packets_tx     ; 0
 953 
        cmp     ebx, .number
- 
 
 954 
        ja      .error
953 
        dec     bl
 955 
        jmp     dword [.table + 4*ebx]
954 
        jz      .packets_rx     ; 1
 956 
 
955 
        dec     bl
 957 
  .table:
956 
        jz      .read_ip        ; 2
 958 
        dd      .packets_tx     ; 0
957 
        dec     bl
 - 
 
958 
        jz      .write_ip       ; 3
 959 
        dd      .packets_rx     ; 1
959 
        dec     bl
 - 
 
960 
        jz      .read_dns       ; 4
 960 
        dd      .write_ip       ; 3
961 
        dec     bl
 - 
 
962 
        jz      .write_dns      ; 5
 961 
        dd      .read_dns       ; 4
963 
        dec     bl
 - 
 
964 
        jz      .read_subnet    ; 6
 962 
        dd      .write_dns      ; 5
965 
        dec     bl
 - 
 
966 
        jz      .write_subnet   ; 7
 963 
        dd      .read_subnet    ; 6
967 
        dec     bl
 964 
        dd      .write_subnet   ; 7
968 
        jz      .read_gateway   ; 8
 965 
        dd      .read_gateway   ; 8
Line 969... Line 966...
969 
        dec     bl
 966 
        dd      .write_gateway  ; 9
970 
        jz      .write_gateway  ; 9
 967 
  .number = ($ - .table) / 4 - 1
971 
 
 968 
 
Line 972... Line 969...
972 
  .error:
 969 
  .error:
973 
        mov     eax, -1
 970 
        mov     eax, -1
974 
        ret
 - 
 
975 
 
 971 
        ret
Line 976... Line 972...
976 
  .packets_tx:
 972 
 
977 
        add     eax, IP_PACKETS_TX
 973 
  .packets_tx:
978 
        mov     eax, [eax]
 - 
 
979 
        ret
 974 
        mov     eax, [IP_PACKETS_TX + eax]
Line 980... Line 975...
980 
 
 975 
        ret
981 
  .packets_rx:
 - 
 
982 
        add     eax, IP_PACKETS_RX
 976 
 
983 
        mov     eax, [eax]
 977 
  .packets_rx:
Line 984... Line 978...
984 
        ret
 978 
        mov     eax, [IP_PACKETS_RX + eax]
985 
 
 - 
 
986 
  .read_ip:
 979 
        ret
987 
        add     eax, IP_LIST
 980 
 
988 
        mov     eax, [eax]
 981 
  .read_ip:
Line 989... Line 982...
989 
        ret
 982 
        mov     eax, [IP_LIST + eax]
990 
 
 983 
        ret
991 
  .write_ip:
 - 
 
992 
        add     eax, IP_LIST
 984 
 
Line 993... Line 985...
993 
        mov     [eax], ecx
 985 
  .write_ip:
994 
        xor     eax, eax
 - 
 
995 
        ret
 986 
        mov     [IP_LIST + eax], ecx
996 
 
 987 
        xor     eax, eax
997 
  .read_dns:
 988 
        ret
Line 998... Line 989...
998 
        add     eax, DNS_LIST
 989 
 
999 
        mov     eax, [eax]
 990 
  .read_dns:
1000 
        ret
 - 
 
1001 
 
 991 
        mov     eax, [DNS_LIST + eax]
Line 1002... Line 992...
1002 
  .write_dns:
 992 
        ret
1003 
        add     eax, DNS_LIST
 - 
 
1004 
        mov     [eax], ecx
 993 
 
1005 
        xor     eax, eax
 994 
  .write_dns:
1006 
        ret
 995 
        mov     [DNS_LIST + eax], ecx
Line 1007... Line 996...
1007 
 
 996 
        xor     eax, eax
1008 
  .read_subnet:
 997 
        ret
1009 
        add     eax, SUBNET_LIST
 - 
 
1010 
        mov     eax, [eax]
 998 
 
Line 1011... Line 999...
1011 
        ret
 999 
  .read_subnet:
1012 
 
 - 
 
1013 
  .write_subnet:
 1000 
        mov     eax, [SUBNET_LIST + eax]
1014 
        add     eax, SUBNET_LIST
 1001 
        ret
1015 
        mov     [eax], ecx
 1002 
 
1016 
        xor     eax, eax
 1003 
  .write_subnet: