Diff: net/arp.h

Revision:

0:d494b853ce97

Child:

1:63d4ff534d65

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/net/arp.h	Tue Oct 12 05:32:59 2010 +0000
@@ -0,0 +1,46 @@
+#ifndef ARP_H
+#define ARP_H
+
+#include "net.h"
+
+#define ETHERTYPE_ARP 0x0806
+typedef struct {
+  u16 hardware_type; // 0x0001 for ethernet
+  u16 protocol_type; // 0x0800 for IPv4
+  u8  hardware_length; // Bytes.  Ethernet is 6
+  u8  protocol_length; // Bytes.  IPv4 is 4
+  u16 operation; // Operation.  1 for request, 2 for reply or announce
+  // The following are only valid for IPv4 over Ethernet
+  u8  sender_hardware_address[6]; // Generator of the request or reply
+  u8  sender_protocol_address[4]; // All zeroes for an ARP probe
+  u8  target_hardware_address[6]; // Announce - same as SHA
+  u8  target_protocol_address[4]; // Announce - Same as TPA
+} ARP_Packet;
+
+inline void fix_endian_arp(ARP_Packet *packet)
+{
+  fix_endian_u16(&packet->hardware_type);
+  fix_endian_u16(&packet->protocol_type);
+  fix_endian_u16(&packet->operation);
+}
+
+inline void print_arp(ARP_Packet *packet)
+{
+    main_log.printf("ARP Packet:");
+    main_log.printf("  Hardware:  0x%04X", packet->hardware_type);
+    main_log.printf("  Protocol:  0x%04X", packet->protocol_type);
+    main_log.printf("  Type:      %d", packet->operation);
+    if (packet->hardware_type != 0x0001 || packet->protocol_type != 0x0800) return;
+    
+    u8 *bytes;
+    bytes = packet->sender_hardware_address;
+    main_log.printf("  Source:    MAC - %02X:%02X:%02X:%02X:%02X:%02X", bytes[0],bytes[1],bytes[2],bytes[3],bytes[4],bytes[5]);
+    bytes = packet->target_hardware_address;
+    main_log.printf("  Target:    MAC - %02X:%02X:%02X:%02X:%02X:%02X", bytes[0],bytes[1],bytes[2],bytes[3],bytes[4],bytes[5]);
+    bytes = packet->sender_protocol_address;
+    main_log.printf("  Source:    IP  - %03d.%03d.%03d.%03d", bytes[0], bytes[1], bytes[2], bytes[3]);
+    bytes = packet->target_protocol_address;
+    main_log.printf("  Target:    IP  - %03d.%03d.%03d.%03d", bytes[0], bytes[1], bytes[2], bytes[3]);
+}
+
+#endif
\ No newline at end of file