KernelLand/Modules/IPStack/udp.h

   1 /*
   2  * Acess2 IP Stack
   3  * - UDP Definitions
   4  */
   5 #ifndef _UDP_H_
   6 #define _UDP_H_
   7
   8 #include "ipstack.h"
   9 #include "ipv4.h"
  10
  11 typedef struct sUDPHeader       tUDPHeader;
  12 typedef struct sUDPEndpoint     tUDPEndpoint;
  13 typedef struct sUDPPacket       tUDPPacket;
  14 typedef struct sUDPChannel      tUDPChannel;
  15
  16 struct sUDPHeader
  17 {
  18         Uint16  SourcePort;
  19         Uint16  DestPort;
  20         Uint16  Length;
  21         Uint16  Checksum;
  22         Uint8   Data[];
  23 };
  24
  25 struct sUDPEndpoint
  26 {
  27         Uint16  Port;
  28         Uint16  AddrType;
  29         union {
  30                 tIPv4   v4;
  31                 tIPv6   v6;
  32         }       Addr;
  33 };
  34
  35 struct sUDPPacket
  36 {
  37         struct sUDPPacket       *Next;
  38         tUDPEndpoint    Remote;
  39         size_t  Length;
  40         Uint8   Data[];
  41 };
  42
  43 struct sUDPChannel
  44 {
  45         struct sUDPChannel      *Next;
  46         tInterface      *Interface;
  47         Uint16  LocalPort;
  48
  49         tUDPEndpoint    Remote; // Only accept packets form this address/port pair
  50          int    RemoteMask;     // Mask on the address
  51
  52         tVFS_Node       Node;
  53         tShortSpinlock  lQueue;
  54         tUDPPacket      * volatile Queue;
  55         tUDPPacket      *QueueEnd;
  56 };
  57
  58 #endif
  59