resources/arp.h

   1 #ifndef _ARP_H_
   2 #define _ARP_H_
   3
   4 #include "socket.h"
   5 #include "arch/low/general.h"
   6
   7 #include "mac_addr.h"
   8 #include "arp_table.h"
   9 #include "link_layer.h"
  10
  11 typedef u32 ipv4_addr;
  12
  13 namespace resources {
  14         class arp/* : public socket*/ {
  15         private:
  16                 link_layer *network;
  17
  18                 /* EtherType */
  19                 enum {
  20                         et_arp = 0x806
  21                 };
  22
  23                 enum {
  24                         ethernet = 1
  25                 };
  26                 enum protocol {
  27                         ipv4 = 0x0800
  28                 };
  29                 enum {
  30                         request = 1,
  31                         reply = 2
  32                 };
  33
  34                 mac_addr my_haddr;
  35                 u32 my_paddr;
  36
  37                 struct arp_packet {
  38                         u16 htype;
  39                         u16 ptype;
  40                         u8 hlen;
  41                         u8 plen;
  42                         u16 oper;
  43                         u32 sha0;
  44                         u16 sha1;
  45                         u32 spa;
  46                         u16 tha0;
  47                         u32 tha1;
  48                         u32 tpa;
  49                 } __attribute__((packed));
  50
  51
  52                 volatile bool received;
  53
  54                 arp_table table;
  55
  56                 void receive_data(void *, int);
  57         public:
  58                 void set_link_layer(p<link_layer> x) {
  59                         network = x;
  60                         my_haddr = x->get_haddr();
  61                         my_paddr = 192 << 24 | 168 << 16 | 1 << 8 | 50;
  62
  63                         delegate<void, void*, int> rec;
  64                         rec.method(this, &arp::receive_data);
  65                         x->add_handler(et_arp, rec);
  66                 }
  67
  68                 void set_ipv4(ipv4_addr);
  69
  70                 mac_addr get_haddr(ipv4_addr ipaddr);
  71                 void receive_packet(arp_packet *pkg);
  72
  73                 //static void register_type();
  74         };
  75 }
  76
  77 #endif