OpenWrt – Rev 1
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/*
* uci.c: UCI binding for the switch configuration utility
*
* Copyright (C) 2009 Felix Fietkau <nbd@nbd.name>
*
* 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 Foundatio.
*
* 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 details.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <inttypes.h>
#include <errno.h>
#include <stdint.h>
#include <getopt.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <uci.h>
#include <linux/types.h>
#include <linux/netlink.h>
#include <linux/genetlink.h>
#include <netlink/netlink.h>
#include <netlink/genl/genl.h>
#include <netlink/genl/ctrl.h>
#include <linux/switch.h>
#include "swlib.h"
#ifndef ARRAY_SIZE
#define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0]))
#endif
struct swlib_setting {
struct switch_attr *attr;
const char *name;
int port_vlan;
const char *val;
struct swlib_setting *next;
};
struct swlib_setting early_settings[] = {
{ .name = "reset", .val = "1" },
{ .name = "enable_vlan", .val = "1" },
};
static struct swlib_setting *settings;
static struct swlib_setting **head;
static bool swlib_match_name(struct switch_dev *dev, const char *name)
{
return (strcmp(name, dev->dev_name) == 0 ||
strcmp(name, dev->alias) == 0);
}
static void
swlib_map_settings(struct switch_dev *dev, int type, int port_vlan, struct uci_section *s)
{
struct swlib_setting *setting;
struct switch_attr *attr;
struct uci_element *e;
struct uci_option *o;
uci_foreach_element(&s->options, e) {
o = uci_to_option(e);
if (o->type != UCI_TYPE_STRING)
continue;
if (!strcmp(e->name, "device"))
continue;
/* map early settings */
if (type == SWLIB_ATTR_GROUP_GLOBAL) {
int i;
for (i = 0; i < ARRAY_SIZE(early_settings); i++) {
if (strcmp(e->name, early_settings[i].name) != 0)
continue;
early_settings[i].val = o->v.string;
goto skip;
}
}
attr = swlib_lookup_attr(dev, type, e->name);
if (!attr)
continue;
setting = malloc(sizeof(struct swlib_setting));
memset(setting, 0, sizeof(struct swlib_setting));
setting->attr = attr;
setting->port_vlan = port_vlan;
setting->val = o->v.string;
*head = setting;
head = &setting->next;
skip:
continue;
}
}
int swlib_apply_from_uci(struct switch_dev *dev, struct uci_package *p)
{
struct switch_attr *attr;
struct uci_element *e;
struct uci_section *s;
struct uci_option *o;
struct uci_ptr ptr;
struct switch_val val;
int i;
settings = NULL;
head = &settings;
uci_foreach_element(&p->sections, e) {
struct uci_element *n;
s = uci_to_section(e);
if (strcmp(s->type, "switch") != 0)
continue;
uci_foreach_element(&s->options, n) {
struct uci_option *o = uci_to_option(n);
if (strcmp(n->name, "name") != 0)
continue;
if (o->type != UCI_TYPE_STRING)
continue;
if (swlib_match_name(dev, o->v.string))
goto found;
break;
}
if (!swlib_match_name(dev, e->name))
continue;
goto found;
}
/* not found */
return -1;
found:
/* look up available early options, which need to be taken care
* of in the correct order */
for (i = 0; i < ARRAY_SIZE(early_settings); i++) {
early_settings[i].attr = swlib_lookup_attr(dev,
SWLIB_ATTR_GROUP_GLOBAL, early_settings[i].name);
}
swlib_map_settings(dev, SWLIB_ATTR_GROUP_GLOBAL, 0, s);
/* look for port or vlan sections */
uci_foreach_element(&p->sections, e) {
struct uci_element *os;
s = uci_to_section(e);
if (!strcmp(s->type, "switch_port")) {
char *devn = NULL, *port = NULL, *port_err = NULL;
int port_n;
uci_foreach_element(&s->options, os) {
o = uci_to_option(os);
if (o->type != UCI_TYPE_STRING)
continue;
if (!strcmp(os->name, "device")) {
devn = o->v.string;
if (!swlib_match_name(dev, devn))
devn = NULL;
} else if (!strcmp(os->name, "port")) {
port = o->v.string;
}
}
if (!devn || !port || !port[0])
continue;
port_n = strtoul(port, &port_err, 0);
if (port_err && port_err[0])
continue;
swlib_map_settings(dev, SWLIB_ATTR_GROUP_PORT, port_n, s);
} else if (!strcmp(s->type, "switch_vlan")) {
char *devn = NULL, *vlan = NULL, *vlan_err = NULL;
int vlan_n;
uci_foreach_element(&s->options, os) {
o = uci_to_option(os);
if (o->type != UCI_TYPE_STRING)
continue;
if (!strcmp(os->name, "device")) {
devn = o->v.string;
if (!swlib_match_name(dev, devn))
devn = NULL;
} else if (!strcmp(os->name, "vlan")) {
vlan = o->v.string;
}
}
if (!devn || !vlan || !vlan[0])
continue;
vlan_n = strtoul(vlan, &vlan_err, 0);
if (vlan_err && vlan_err[0])
continue;
swlib_map_settings(dev, SWLIB_ATTR_GROUP_VLAN, vlan_n, s);
}
}
for (i = 0; i < ARRAY_SIZE(early_settings); i++) {
struct swlib_setting *st = &early_settings[i];
if (!st->attr || !st->val)
continue;
swlib_set_attr_string(dev, st->attr, st->port_vlan, st->val);
}
while (settings) {
struct swlib_setting *st = settings;
swlib_set_attr_string(dev, st->attr, st->port_vlan, st->val);
st = st->next;
free(settings);
settings = st;
}
/* Apply the config */
attr = swlib_lookup_attr(dev, SWLIB_ATTR_GROUP_GLOBAL, "apply");
if (!attr)
return 0;
memset(&val, 0, sizeof(val));
swlib_set_attr(dev, attr, &val);
return 0;
}