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libc_lwip_nic_dhcp: Add static IP configuration

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This commit is contained in:
Ivan Loskutov 2012-12-21 11:59:00 +04:00 committed by Norman Feske
parent c2a8c48574
commit 2271f3e7b3
1 changed files with 72 additions and 1 deletions
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73
libports/src/lib/libc_lwip_nic_dhcp/init.cc
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@ -15,19 +15,90 @@
#include <base/printf.h>
#include <parent/parent.h>
#include <os/config.h>
#include <util/string.h>
#include <lwip/genode.h>
extern "C" {
#include <lwip/sockets.h>
#include <lwip/api.h>
}
extern void create_lwip_plugin();
void __attribute__((constructor)) init_nic_dhcp(void)
{
PDBG("init_nic_dhcp()\n");
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;
try {
Genode::Xml_node interface_node = Genode::config()->xml_node().sub_node("interface");
try {
interface_node.attribute("ip_addr").value(ip_addr_str, sizeof(ip_addr_str));
}
catch(Genode::Xml_node::Nonexistent_attribute)
{
PERR("Missing \"ip_addr\" attribute. Ignore interface config.");
throw;
}
try {
interface_node.attribute("netmask").value(netmask_str, sizeof(netmask_str));
}
catch(Genode::Xml_node::Nonexistent_attribute)
{
PERR("Missing \"netmask\" attribute. Ignore interface config.");
throw;
}
try {
interface_node.attribute("gateway").value(gateway_str, sizeof(gateway_str));
}
catch(Genode::Xml_node::Nonexistent_attribute)
{
PERR("Missing \"gateway\" attribute. Ignore interface config.");
throw;
}
PDBG("interface: ip_addr=%s netmask=%s gateway=%s ",
ip_addr_str, netmask_str, gateway_str
);
genode_int32_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 interface config.");
throw;
} 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(0, 0, 0);
lwip_nic_init(ip_addr, netmask, gateway);
} catch (Genode::Parent::Service_denied) {
/* ignore for now */
}