TheCloud/thor-os
1
0
Fork 0
mirror of https://github.com/wichtounet/thor-os.git synced 2025-09-15 07:27:42 -04:00
Code Issues Packages Projects Releases Wiki Activity

Introduce ARP layer

Browse Source
This commit is contained in:
Baptiste Wicht 2016-07-06 14:54:09 +02:00
parent a06e057200
commit f109e6b613
4 changed files with 84 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
kernel/include/arp_layer.hpp Normal file
View File

@ -0,0 +1,33 @@
//=======================================================================
// Copyright Baptiste Wicht 2013-2016.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//=======================================================================
#ifndef NET_ARP_LAYER_H
#define NET_ARP_LAYER_H
#include <types.hpp>
#include "ethernet_layer.hpp"
namespace network {
namespace arp {
struct header {
uint16_t hw_type;
uint16_t protocol_type;
uint8_t hw_len;
uint8_t protocol_len;
uint16_t operation;
} __attribute__((packed));
void decode(network::ethernet::packet& packet);
} // end of arp namespace
} // end of network namespace
#endif

3
kernel/include/ethernet_layer.hpp
View File

@ -29,8 +29,9 @@ struct packet {
// Set by ethernet
ether_type type;
size_t index;
packet(char* payload, size_t payload_size) : payload(payload), payload_size(payload_size) {}
packet(char* payload, size_t payload_size) : payload(payload), payload_size(payload_size), index(0) {}
};
struct address {

46
kernel/src/arp_layer.cpp Normal file
View File

@ -0,0 +1,46 @@
//=======================================================================
// Copyright Baptiste Wicht 2013-2016.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//=======================================================================
#include <vector.hpp>
#include <string.hpp>
#include "arp_layer.hpp"
#include "logging.hpp"
#include "kernel_utils.hpp"
namespace {
//TODO
} //end of anonymous namespace
void network::arp::decode(network::ethernet::packet& packet){
header* arp_header = reinterpret_cast<header*>(packet.payload + packet.index);
logging::logf(logging::log_level::TRACE, "arp: Start ARP packet handling\n");
auto hw_type = switch_endian_16(arp_header->hw_type);
auto protocol_type = switch_endian_16(arp_header->protocol_type);
if(hw_type != 0x1){
logging::logf(logging::log_level::ERROR, "arp: Unhandled hardware type %h\n", size_t(hw_type));
return;
}
if(protocol_type != 0x800){
logging::logf(logging::log_level::ERROR, "arp: Unhandled protocol type %h\n", size_t(protocol_type));
return;
}
auto hw_len = arp_header->hw_len;
auto protocol_len = arp_header->protocol_len;
auto operation = switch_endian_16(arp_header->operation);
logging::logf(logging::log_level::TRACE, "arp: Start ARP packet handling %h\n", size_t(hw_len));
logging::logf(logging::log_level::TRACE, "arp: Start ARP packet handling %h\n", size_t(protocol_len));
logging::logf(logging::log_level::TRACE, "arp: Start ARP packet handling %h\n", size_t(operation));
}

4
kernel/src/ethernet_layer.cpp
View File

@ -11,6 +11,7 @@
#include "ethernet_layer.hpp"
#include "logging.hpp"
#include "kernel_utils.hpp"
#include "arp_layer.hpp"
namespace {
@ -51,6 +52,7 @@ void network::ethernet::decode(packet& packet){
logging::logf(logging::log_level::TRACE, "ethernet: Destination MAC Address %h \n", target_mac);
packet.type = decode_ether_type(ether_header);
packet.index += sizeof(header);
switch(packet.type){
case ether_type::IPV4:
@ -60,7 +62,7 @@ void network::ethernet::decode(packet& packet){
logging::logf(logging::log_level::TRACE, "ethernet: IPV6 Packet (unsupported)\n");
break;
case ether_type::ARP:
logging::logf(logging::log_level::TRACE, "ethernet: ARP Packet (unsupported)\n");
network::arp::decode(packet);
break;
case ether_type::UNKNOWN:
logging::logf(logging::log_level::TRACE, "ethernet: Unhandled Packet Type: %u\n", uint64_t(switch_endian_16(ether_header->type)));