src/net/ip.hpp

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/*
 panaLiX, Adrian Panasiuk 2002-5,8
 http://panalix.sf.net/
 ad.ek336@gmail.com
 
 small osdev project
 provided under GPLv3 license.
 */


#ifndef __PANALIX_IP_HPP
#define __PANALIX_IP_HPP

namespace Net {
namespace IP {

   struct ip_address my_ip_address();
   struct netmask_t my_netmask();
#if 1
   struct pbuf {
      uint8 *data;
      uint32 eth_off;   //data[eth_off] to pierwszy bajt ramki ethernetowej
      uint32 ip_off;    //data[ip_off] to pierwszy bajt datagramu ip
      uint32 ip_data_off; //data[ip_data_off] to pierwszy bajt danych w datagramie ip
      uint32 end;    //data[end-1] to ostatni bajt pakietu
      uint32 len;    //wielkosc bloku pamieci data
   };

   void onIpReception(struct netbuf *nb);
   void ip_onNewArpEntry(struct Net::Arp::arp_entry arp);
   int ip_poll(struct pbuf *& pb);
   enum route_flags {scope_link=0x01, scope_host=0x02};

   struct route_t {
      struct ip_address target;
      struct netmask_t netmask;
      struct ip_address gateway;
      struct netif *nif;
      uint32 flags;
      route_t(struct ip_address target, struct netmask_t netmask, struct ip_address gateway, struct netif *nif, uint32 flags) : target(target),netmask(netmask),gateway(gateway),
         nif(nif),flags(flags) { }
   };

   struct ip_header { 
      uint8 hdr_len:4;
      uint8 version:4;
      uint8 tos;
      uint16 len;
      uint16 iden;
      uint16 flags_fo;   //3 bits flags; 13 bits fragmentation offset
//      uint8 flags:3;
//      uint16 offset:13;
      uint8 ttl;
      uint8 prot;
      uint16 checksum;
      struct ip_address source_ip;
      struct ip_address target_ip;
   };

   uint16 count_checksum_iph(struct ip_header *iph);

   void ip_transmit(struct ip_address ip_addr, uint8 tos, uint8 prot, struct pbuf *pb);
   void ip_transmit(struct ip_address ip_addr, uint8 tos, uint8 prot, struct packet_t *pb);
   void route_add(struct route_t);

   struct netif_and_ip {
      struct netif nif;
      struct ip_address ip;
   };
   bool route_find(struct ip_address ip, struct netif_and_ip &rt);

#endif
   void init();
   


   

   }
}

void print (struct Net::IP::ip_header iph);
void print (struct Net::IP::pbuf pb);
void print (struct Net::IP::route_t &route);

#endif

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