133 lines
3.3 KiB
C++
133 lines
3.3 KiB
C++
/*
|
|
* \brief lwip nic interface initialisation using DHCP
|
|
* \author Christian Prochaska
|
|
* \date 2010-04-29
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2010-2013 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.
|
|
*/
|
|
|
|
#include <base/printf.h>
|
|
#include <parent/parent.h>
|
|
|
|
#include <os/config.h>
|
|
#include <nic/packet_allocator.h>
|
|
#include <util/string.h>
|
|
|
|
#include <lwip/genode.h>
|
|
|
|
extern "C" {
|
|
#include <lwip/sockets.h>
|
|
#include <lwip/api.h>
|
|
}
|
|
|
|
|
|
extern void create_lwip_plugin();
|
|
extern void create_etc_resolv_conf_plugin();
|
|
|
|
|
|
void __attribute__((constructor)) init_nic_dhcp(void)
|
|
{
|
|
enum { BUF_SIZE = Nic::Packet_allocator::DEFAULT_PACKET_SIZE * 128 };
|
|
|
|
PDBG("init_nic_dhcp()\n");
|
|
|
|
bool provide_etc_resolv_conf = true;
|
|
|
|
char ip_addr_str[16] = {0};
|
|
char netmask_str[16] = {0};
|
|
char gateway_str[16] = {0};
|
|
|
|
genode_int32_t ip_addr = 0;
|
|
genode_int32_t netmask = 0;
|
|
genode_int32_t gateway = 0;
|
|
Genode::Number_of_bytes tx_buf_size(BUF_SIZE);
|
|
Genode::Number_of_bytes rx_buf_size(BUF_SIZE);
|
|
|
|
try {
|
|
Genode::Xml_node libc_node = Genode::config()->xml_node().sub_node("libc");
|
|
|
|
try {
|
|
if (libc_node.attribute("resolv").has_value("no"))
|
|
provide_etc_resolv_conf = false;
|
|
} catch(...) { }
|
|
|
|
try {
|
|
libc_node.attribute("ip_addr").value(ip_addr_str, sizeof(ip_addr_str));
|
|
} catch(...) { }
|
|
|
|
try {
|
|
libc_node.attribute("netmask").value(netmask_str, sizeof(netmask_str));
|
|
} catch(...) { }
|
|
|
|
try {
|
|
libc_node.attribute("gateway").value(gateway_str, sizeof(gateway_str));
|
|
} catch(...) { }
|
|
|
|
try {
|
|
libc_node.attribute("tx_buf_size").value(&tx_buf_size);
|
|
} catch(...) { }
|
|
|
|
try {
|
|
libc_node.attribute("rx_buf_size").value(&rx_buf_size);
|
|
} catch(...) { }
|
|
|
|
/* either none or all 3 interface attributes must exist */
|
|
if ((strlen(ip_addr_str) != 0) ||
|
|
(strlen(netmask_str) != 0) ||
|
|
(strlen(gateway_str) != 0)) {
|
|
if (strlen(ip_addr_str) == 0) {
|
|
PERR("Missing \"ip_addr\" attribute. Ignoring network interface config.");
|
|
throw Genode::Xml_node::Nonexistent_attribute();
|
|
} else if (strlen(netmask_str) == 0) {
|
|
PERR("Missing \"netmask\" attribute. Ignoring network interface config.");
|
|
throw Genode::Xml_node::Nonexistent_attribute();
|
|
} else if (strlen(gateway_str) == 0) {
|
|
PERR("Missing \"gateway\" attribute. Ignoring network interface config.");
|
|
throw Genode::Xml_node::Nonexistent_attribute();
|
|
}
|
|
} else
|
|
throw -1;
|
|
|
|
PDBG("static network interface: ip_addr=%s netmask=%s gateway=%s ",
|
|
ip_addr_str, netmask_str, gateway_str
|
|
);
|
|
|
|
genode_uint32_t ip, nm, gw;
|
|
|
|
ip = inet_addr(ip_addr_str);
|
|
nm = inet_addr(netmask_str);
|
|
gw = inet_addr(gateway_str);
|
|
|
|
if (ip == INADDR_NONE || nm == INADDR_NONE || gw == INADDR_NONE) {
|
|
PERR("Invalid network interface config.");
|
|
throw -1;
|
|
} else {
|
|
ip_addr = ip;
|
|
netmask = nm;
|
|
gateway = gw;
|
|
}
|
|
}
|
|
catch (...) {
|
|
PINF("Using DHCP for interface configuration.");
|
|
}
|
|
|
|
/* make sure the libc_lwip plugin has been created */
|
|
create_lwip_plugin();
|
|
|
|
try {
|
|
lwip_nic_init(ip_addr, netmask, gateway,
|
|
(Genode::size_t)tx_buf_size, (Genode::size_t)rx_buf_size);
|
|
} catch (Genode::Parent::Service_denied) {
|
|
/* ignore for now */
|
|
}
|
|
|
|
if (provide_etc_resolv_conf)
|
|
create_etc_resolv_conf_plugin();
|
|
}
|