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net/dump.h: dump header info of network packets

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Ref #114
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Martin Stein 2016-08-15 15:06:10 +02:00 committed by Christian Helmuth
parent 0ce79f3a8a
commit 136b80b7b8
1 changed files with 155 additions and 0 deletions
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/*
* \brief Dump header info of network packets
* \author Martin Stein
* \date 2016-08-15
*/
/*
* Copyright (C) 2016 Genode Labs GmbH
*
* This file is part of the Genode OS framework, which is distributed
* under the terms of the GNU General Public License version 2.
*/
#ifndef _NET__DUMP_H_
#define _NET__DUMP_H_
/* Genode includes */
#include <base/printf.h>
#include <net/arp.h>
#include <net/dhcp.h>
#include <net/ethernet.h>
#include <net/ipv4.h>
#include <net/udp.h>
#include <net/tcp.h>
namespace Net
{
void dump_tcp(void * const base, Genode::size_t const size)
{
Tcp_packet * tcp = new (base) Tcp_packet(size);
Genode::printf(
"\033[32mTCP\033[0m %u > %u flags '",
tcp->src_port(),
tcp->dst_port());
if (tcp->fin()) { Genode::printf("f"); }
if (tcp->syn()) { Genode::printf("s"); }
if (tcp->rst()) { Genode::printf("r"); }
if (tcp->psh()) { Genode::printf("p"); }
if (tcp->ack()) { Genode::printf("a"); }
if (tcp->urg()) { Genode::printf("u"); }
Genode::printf("' ");
}
void dump_dhcp(void * const base, Genode::size_t const size)
{
Dhcp_packet * dhcp = new (base) Dhcp_packet(size);
Genode::printf(
"\033[32mDHCP\033[0m %x:%x:%x:%x:%x:%x > %u.%u.%u.%u cmd %u ",
dhcp->client_mac().addr[0],
dhcp->client_mac().addr[1],
dhcp->client_mac().addr[2],
dhcp->client_mac().addr[3],
dhcp->client_mac().addr[4],
dhcp->client_mac().addr[5],
dhcp->siaddr().addr[0],
dhcp->siaddr().addr[1],
dhcp->siaddr().addr[2],
dhcp->siaddr().addr[3],
dhcp->op());
}
void dump_udp(void * const base, Genode::size_t const size)
{
Udp_packet * udp = new (base) Udp_packet(size);
Genode::printf(
"\033[32mUDP\033[0m %u > %u ",
udp->src_port(),
udp->dst_port());
Genode::size_t data_size = size - sizeof(Udp_packet);
void * data = udp->data<void>();
if (Dhcp_packet::is_dhcp(udp)) { dump_dhcp(data, data_size); }
}
void dump_ipv4(void * const base, Genode::size_t const size)
{
Ipv4_packet * ipv4 = new (base) Ipv4_packet(size);
Genode::printf(
"\033[32mIPV4\033[0m %u.%u.%u.%u > %u.%u.%u.%u ",
ipv4->src().addr[0],
ipv4->src().addr[1],
ipv4->src().addr[2],
ipv4->src().addr[3],
ipv4->dst().addr[0],
ipv4->dst().addr[1],
ipv4->dst().addr[2],
ipv4->dst().addr[3]);
void * data = ipv4->data<void>();
Genode::size_t data_size = size - sizeof(Ipv4_packet);
switch (ipv4->protocol()) {
case Tcp_packet::IP_ID: dump_tcp(data, data_size); break;
case Udp_packet::IP_ID: dump_udp(data, data_size); break;
default: ; }
}
void dump_arp(void * const base, Genode::size_t const size)
{
Arp_packet * arp = new (base) Arp_packet(size);
if (!arp->ethernet_ipv4()) { return; }
Genode::printf(
"\033[32mARP\033[0m %x:%x:%x:%x:%x:%x %u.%u.%u.%u "
"> %x:%x:%x:%x:%x:%x %u.%u.%u.%u cmd %u ",
arp->src_mac().addr[0],
arp->src_mac().addr[1],
arp->src_mac().addr[2],
arp->src_mac().addr[3],
arp->src_mac().addr[4],
arp->src_mac().addr[5],
arp->src_ip().addr[0],
arp->src_ip().addr[1],
arp->src_ip().addr[2],
arp->src_ip().addr[3],
arp->dst_mac().addr[0],
arp->dst_mac().addr[1],
arp->dst_mac().addr[2],
arp->dst_mac().addr[3],
arp->dst_mac().addr[4],
arp->dst_mac().addr[5],
arp->dst_ip().addr[0],
arp->dst_ip().addr[1],
arp->dst_ip().addr[2],
arp->dst_ip().addr[3],
arp->opcode());
}
void dump_eth(void * const base, Genode::size_t const size)
{
Ethernet_frame * eth = new (base) Ethernet_frame(size);
Genode::printf(
"\033[32mETH\033[0m %x:%x:%x:%x:%x:%x > %x:%x:%x:%x:%x:%x ",
eth->src().addr[0],
eth->src().addr[1],
eth->src().addr[2],
eth->src().addr[3],
eth->src().addr[4],
eth->src().addr[5],
eth->dst().addr[0],
eth->dst().addr[1],
eth->dst().addr[2],
eth->dst().addr[3],
eth->dst().addr[4],
eth->dst().addr[5]);
void * data = eth->data<void>();
Genode::size_t data_size = size - sizeof(Ethernet_frame);
switch (eth->type()) {
case Ethernet_frame::ARP: dump_arp(data, data_size); break;
case Ethernet_frame::IPV4: dump_ipv4(data, data_size); break;
default: ; }
}
}
#endif /* _NET__DUMP_H_ */