40d89c4977
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
202 lines
4.1 KiB
C
202 lines
4.1 KiB
C
/*
|
|
* ifup.c - bring up network interfaces
|
|
*
|
|
* Copyright (c) 2014 Sascha Hauer <s.hauer@pengutronix.de>, Pengutronix
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more detaiifup.
|
|
*
|
|
*/
|
|
#define pr_fmt(fmt) "ifup: " fmt
|
|
|
|
#include <environment.h>
|
|
#include <command.h>
|
|
#include <common.h>
|
|
#include <getopt.h>
|
|
#include <net.h>
|
|
#include <fs.h>
|
|
#include <linux/stat.h>
|
|
|
|
static char *vars[] = {
|
|
"ipaddr",
|
|
"netmask",
|
|
"gateway",
|
|
"serverip",
|
|
};
|
|
|
|
static int eth_set_param(struct device_d *dev, const char *param)
|
|
{
|
|
const char *value = getenv(param);
|
|
|
|
if (!value)
|
|
return 0;
|
|
if (!*value)
|
|
return 0;
|
|
|
|
return dev_set_param(dev, param, value);
|
|
}
|
|
|
|
int ifup(const char *name, unsigned flags)
|
|
{
|
|
int ret;
|
|
char *cmd, *cmd_discover;
|
|
const char *ip;
|
|
struct stat s;
|
|
int i;
|
|
struct device_d *dev;
|
|
struct eth_device *edev = eth_get_byname(name);
|
|
|
|
if (edev && edev->ipaddr && !(flags & IFUP_FLAG_FORCE))
|
|
return 0;
|
|
|
|
eth_set_current(edev);
|
|
|
|
env_push_context();
|
|
|
|
setenv("ip", "");
|
|
|
|
for (i = 0; i < ARRAY_SIZE(vars); i++)
|
|
setenv(vars[i], "");
|
|
|
|
cmd = asprintf("source /env/network/%s", name);
|
|
cmd_discover = asprintf("/env/network/%s-discover", name);
|
|
|
|
ret = run_command(cmd);
|
|
if (ret) {
|
|
pr_err("Running '%s' failed with %d\n", cmd, ret);
|
|
goto out;
|
|
}
|
|
|
|
ret = stat(cmd_discover, &s);
|
|
if (!ret) {
|
|
ret = run_command(cmd_discover);
|
|
if (ret) {
|
|
pr_err("Running '%s' failed with %d\n", cmd, ret);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
dev = get_device_by_name(name);
|
|
if (!dev) {
|
|
pr_err("Cannot find device %s\n", name);
|
|
goto out;
|
|
}
|
|
|
|
ret = eth_set_param(dev, "ethaddr");
|
|
if (ret)
|
|
goto out;
|
|
|
|
ip = getenv("ip");
|
|
if (!strcmp(ip, "dhcp")) {
|
|
ret = run_command("dhcp");
|
|
if (ret)
|
|
goto out;
|
|
ret = eth_set_param(dev, "serverip");
|
|
if (ret)
|
|
goto out;
|
|
} else if (!strcmp(ip, "static")) {
|
|
for (i = 0; i < ARRAY_SIZE(vars); i++) {
|
|
ret = eth_set_param(dev, vars[i]);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
} else {
|
|
pr_err("unknown ip type: %s\n", ip);
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
ret = 0;
|
|
out:
|
|
env_pop_context();
|
|
free(cmd);
|
|
free(cmd_discover);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int ifup_all(unsigned flags)
|
|
{
|
|
DIR *dir;
|
|
struct dirent *d;
|
|
|
|
dir = opendir("/env/network");
|
|
if (!dir)
|
|
return -ENOENT;
|
|
|
|
while ((d = readdir(dir))) {
|
|
if (*d->d_name == '.')
|
|
continue;
|
|
/*
|
|
* Skip xxx-discover files since these are no
|
|
* network configuration files, but scripts to bring
|
|
* up network interface xxx.
|
|
*/
|
|
if (strstr(d->d_name, "-discover"))
|
|
continue;
|
|
ifup(d->d_name, flags);
|
|
}
|
|
|
|
closedir(dir);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_NET_CMD_IFUP)
|
|
|
|
static int do_ifup(int argc, char *argv[])
|
|
{
|
|
int opt;
|
|
unsigned flags = 0;
|
|
int all = 0;
|
|
|
|
while ((opt = getopt(argc, argv, "af")) > 0) {
|
|
switch (opt) {
|
|
case 'f':
|
|
flags |= IFUP_FLAG_FORCE;
|
|
break;
|
|
case 'a':
|
|
all = 1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (all)
|
|
return ifup_all(flags);
|
|
|
|
if (argc == optind)
|
|
return COMMAND_ERROR_USAGE;
|
|
|
|
return ifup(argv[optind], flags);
|
|
}
|
|
|
|
BAREBOX_CMD_HELP_START(ifup)
|
|
BAREBOX_CMD_HELP_TEXT("Each INTF must have a script /env/network/INTF that set the variables")
|
|
BAREBOX_CMD_HELP_TEXT("ip (to 'static' or 'dynamic'), ipaddr, netmask, gateway, serverip and/or")
|
|
BAREBOX_CMD_HELP_TEXT("ethaddr. A script /env/network/INTF-discover can contains for discovering")
|
|
BAREBOX_CMD_HELP_TEXT("the ethernet device, e.g. 'usb'.")
|
|
BAREBOX_CMD_HELP_TEXT("")
|
|
BAREBOX_CMD_HELP_TEXT("Options:")
|
|
BAREBOX_CMD_HELP_OPT ("-a", "bring up all interfaces")
|
|
BAREBOX_CMD_HELP_OPT ("-f", "Force. Configure even if ip already set")
|
|
BAREBOX_CMD_HELP_END
|
|
|
|
BAREBOX_CMD_START(ifup)
|
|
.cmd = do_ifup,
|
|
BAREBOX_CMD_DESC("bring a network interface up")
|
|
BAREBOX_CMD_OPTS("[-af] [INTF]")
|
|
BAREBOX_CMD_GROUP(CMD_GRP_NET)
|
|
BAREBOX_CMD_HELP(cmd_ifup_help)
|
|
BAREBOX_CMD_END
|
|
|
|
#endif
|