| 569,6 → 569,7 |
|---|
| ; IPv4_output |
| ; |
| ; IN: eax = Destination IP |
| ; ebx = device ptr (or 0 to let IP layer decide) |
| ; ecx = data length |
| ; edx = Source IP |
| ; di = TTL shl 8 + protocol |
| 863,6 → 864,7 |
|---|
| ; IPv4_route |
| ; |
| ; IN: eax = Destination IP |
| ; ebx = outgoing device / 0 |
| ; edx = Source IP |
| ; OUT: eax = Destination IP (or gateway IP) |
| ; edx = Source IP |
| 874,6 → 876,9 |
|---|
| align 4 |
| IPv4_route: ; TODO: return error if no valid route found |
| |
| test ebx, ebx |
| jnz .got_device |
| |
| cmp eax, 0xffffffff |
| je .broadcast |
| |
| 903,8 → 908,29 |
|---|
| |
| ret |
| |
| .got_device: |
| ; Validate device ptr and convert to device number |
| call NET_ptr_to_num4 |
| cmp edi, -1 |
| je .fail |
| |
| mov edx, [IP_LIST + edi] ; Source IP |
| |
| ; Check if we should route to gateway or not |
| mov ebx, [IP_LIST + edi] |
| and ebx, [SUBNET_LIST + edi] |
| mov ecx, eax |
| and ecx, [SUBNET_LIST + edi] |
| je @f |
| mov eax, [GATEWAY_LIST + edi] |
| @@: |
| ret |
| |
| .fail: |
| ret |
| |
| |
| |
| ;--------------------------------------------------------------------------- |
| ; |
| ; IPv4_get_frgmnt_num |