Difference between revisions of "Unit ARP"
From Ultibo.org
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---- | ---- | ||
| − | '' | + | |
| + | '''ARP specific types''' | ||
| + | |||
| + | <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;"> | ||
| + | <code>PARPHeader = ^TARPHeader;</code> | ||
| + | |||
| + | <code>TARPHeader = packed record</code> | ||
| + | <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;"> | ||
| + | {| class="wikitable" style="font-size: 14px; background: white;" | ||
| + | |- | ||
| + | |colspan="2"|Note: 46 Bytes | ||
| + | | style="width: 50%;"| | ||
| + | |- | ||
| + | | <code>HardwareType:Word;</code> | ||
| + | | Hardware address space (Network Order) | ||
| + | |- | ||
| + | | <code>ProtocolType:Word;</code> | ||
| + | | Protocol address space (Network Order) | ||
| + | |- | ||
| + | | <code>HardwareLength:Byte;</code> | ||
| + | | Byte length of hardware address | ||
| + | |- | ||
| + | | <code>ProtocolLength:Byte;</code> | ||
| + | | Byte length of each protocol address | ||
| + | |- | ||
| + | | <code>Opcode:Word;</code> | ||
| + | | Op code (eg ARP_REQUEST or ARP_REPLY) (Network Order) | ||
| + | |- | ||
| + | | <code>SourceHardware:THardwareAddress;</code> | ||
| + | | Source hardware address (of sender) | ||
| + | |- | ||
| + | | <code>SourceIP:TInAddr;</code> | ||
| + | | Source protocol address (of sender) (Network Order) | ||
| + | |- | ||
| + | | <code>TargetHardware:THardwareAddress;</code> | ||
| + | | Target hardware address (if known) | ||
| + | |- | ||
| + | | <code>TargetIP:TInAddr;</code> | ||
| + | | Target protocol address (Network Order) | ||
| + | |- | ||
| + | | <code>Reserved:array[0..17] of Word;</code> | ||
| + | | | ||
| + | |- | ||
| + | |} | ||
| + | </div></div> | ||
| + | |||
| + | '''RARP specific types''' | ||
| + | |||
| + | <div class="toccolours mw-collapsible mw-collapsed" style="border: 1; font-family: arial;"> | ||
| + | <code>PRARPHeader = ^TRARPHeader;</code> | ||
| + | |||
| + | <code>TRARPHeader = TARPHeader;</code> | ||
| + | <div class="mw-collapsible-content" style="text-align: left; padding-left: 5px;"> | ||
| + | {| class="wikitable" style="font-size: 14px; background: white;" | ||
| + | |- | ||
| + | |colspan="2"|Note: 46 Bytes | ||
| + | |- | ||
| + | | | ||
| + | | style="width: 50%;"| | ||
| + | |- | ||
| + | |} | ||
| + | </div></div> | ||
| + | <br /> | ||
=== Public variables === | === Public variables === | ||
Revision as of 02:36, 17 January 2017
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Description
Ultibo ARP (Address Resolution Protocol) unit
To be documented
Constants
ARP specific constants
ARP_TRANSPORT_*, RARP_TRANSPORT_* ARP_TRANSPORT_NAME = 'ARP';
|
|
RARP_TRANSPORT_NAME = 'RARP';
|
ARP and RARP constants
MIN_*, MAX_*, ARP_*, RARP_* MIN_ARP_PACKET = 46;
|
Not Counting Adapter Header |
MAX_ARP_PACKET = 46;
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Not Counting Adapter Header |
ARP_TIMEOUT = 1000;
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We wait for 1 second approx for reply |
ARP_RETRIES = 4;
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We try the request 4 times |
RARP_TIMEOUT = 4000;
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We wait for 4 seconds for a RARP reply |
RARP_RETRIES = 4;
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We try the request 4 times |
ARP_HEADER_SIZE = 46;
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SizeOf(TARPHeader); |
RARP_HEADER_SIZE = 46;
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SizeOf(TRARPHeader); |
ARP and RARP messages
ARP_*, RARP_*, INARP_* ARP_REQUEST = $0001;
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ARP/RARP op codes, Request |
ARP_REPLY = $0002;
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ARP/RARP op codes, Reply |
RARP_REQUEST = $0003;
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RARP_REPLY = $0004;
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INARP_REQUEST = $0008;
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Inverse ARP see RFC 1293 |
INARP_REPLY = $0009;
|
Type definitions
ARP specific types
PARPHeader = ^TARPHeader;
TARPHeader = packed record
| Note: 46 Bytes | ||
HardwareType:Word;
|
Hardware address space (Network Order) | |
ProtocolType:Word;
|
Protocol address space (Network Order) | |
HardwareLength:Byte;
|
Byte length of hardware address | |
ProtocolLength:Byte;
|
Byte length of each protocol address | |
Opcode:Word;
|
Op code (eg ARP_REQUEST or ARP_REPLY) (Network Order) | |
SourceHardware:THardwareAddress;
|
Source hardware address (of sender) | |
SourceIP:TInAddr;
|
Source protocol address (of sender) (Network Order) | |
TargetHardware:THardwareAddress;
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Target hardware address (if known) | |
TargetIP:TInAddr;
|
Target protocol address (Network Order) | |
Reserved:array[0..17] of Word;
|
||
RARP specific types
PRARPHeader = ^TRARPHeader;
TRARPHeader = TARPHeader;
| Note: 46 Bytes | |
Public variables
None defined
Function declarations
Initialization functions
procedure ARPInit;
Description: To be documented
| Note | None documented |
|---|
ARP functions
function CheckARP(ABuffer:Pointer):Boolean;
Description: Verify that the packet is a valid ARP packet
| Buffer | Buffer points to the complete packet without Adapter header |
|---|
function CheckRARP(ABuffer:Pointer):Boolean;
Description: Verify that the packet is a valid RARP packet
| Buffer | Buffer points to the complete packet without Adapter header |
|---|
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