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wireless.c
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wireless.c
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/*
* netifd - network interface daemon
* Copyright (C) 2013 Felix Fietkau <[email protected]>
*
* 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 details.
*/
/* The wireless configuration is projected on the following objects
*
* 1. wireless device
* 2. wireless interface
* 3. wireless vlan
* 4. wireless station
*
* A wireless device is a phy or simplified a wireless card.
* A wireless interface is a SSID on a phy.
* A wireless vlan can be assigned to a wireless interface. A wireless interface can
* have multiple vlans.
* A wireless station is a client connected to an wireless interface.
*/
#include <signal.h>
#include "netifd.h"
#include "wireless.h"
#include "handler.h"
#include "ubus.h"
#define WIRELESS_SETUP_RETRY 3
struct vlist_tree wireless_devices;
struct avl_tree wireless_drivers;
static struct blob_buf b;
static int drv_fd;
static LIST_HEAD(handlers);
static bool handler_pending;
enum {
WDEV_ATTR_DISABLED,
WDEV_ATTR_RECONF,
WDEV_ATTR_SERIALIZE,
__WDEV_ATTR_MAX,
};
static const struct blobmsg_policy wdev_policy[__WDEV_ATTR_MAX] = {
[WDEV_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
[WDEV_ATTR_RECONF] = { .name = "reconf", .type = BLOBMSG_TYPE_BOOL },
[WDEV_ATTR_SERIALIZE] = { .name = "serialize", .type = BLOBMSG_TYPE_BOOL },
};
static const struct uci_blob_param_list wdev_param = {
.n_params = ARRAY_SIZE(wdev_policy),
.params = wdev_policy,
};
enum {
VIF_ATTR_DISABLED,
VIF_ATTR_NETWORK,
VIF_ATTR_NETWORK_VLAN,
VIF_ATTR_BRIDGE_ISOLATE,
VIF_ATTR_ISOLATE,
VIF_ATTR_MODE,
VIF_ATTR_PROXYARP,
VIF_ATTR_MCAST_TO_UCAST,
__VIF_ATTR_MAX,
};
static const struct blobmsg_policy vif_policy[__VIF_ATTR_MAX] = {
[VIF_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
[VIF_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
[VIF_ATTR_NETWORK_VLAN] = { .name = "network_vlan", .type = BLOBMSG_TYPE_ARRAY },
[VIF_ATTR_BRIDGE_ISOLATE] = { .name = "bridge_isolate", .type = BLOBMSG_TYPE_BOOL },
[VIF_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
[VIF_ATTR_MODE] = { .name = "mode", .type = BLOBMSG_TYPE_STRING },
[VIF_ATTR_PROXYARP] = { .name = "proxy_arp", .type = BLOBMSG_TYPE_BOOL },
[VIF_ATTR_MCAST_TO_UCAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
};
static const struct uci_blob_param_list vif_param = {
.n_params = ARRAY_SIZE(vif_policy),
.params = vif_policy,
};
enum {
VLAN_ATTR_DISABLED,
VLAN_ATTR_NETWORK,
VLAN_ATTR_NETWORK_VLAN,
VLAN_ATTR_BRIDGE_ISOLATE,
VLAN_ATTR_ISOLATE,
VLAN_ATTR_MCAST_TO_UCAST,
__VLAN_ATTR_MAX,
};
static const struct blobmsg_policy vlan_policy[__VLAN_ATTR_MAX] = {
[VLAN_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
[VLAN_ATTR_NETWORK] = { .name = "network", .type = BLOBMSG_TYPE_ARRAY },
[VLAN_ATTR_NETWORK_VLAN] = { .name = "network_vlan", .type = BLOBMSG_TYPE_ARRAY },
[VLAN_ATTR_BRIDGE_ISOLATE] = { .name = "bridge_isolate", .type = BLOBMSG_TYPE_BOOL },
[VLAN_ATTR_ISOLATE] = { .name = "isolate", .type = BLOBMSG_TYPE_BOOL },
[VLAN_ATTR_MCAST_TO_UCAST] = { .name = "multicast_to_unicast", .type = BLOBMSG_TYPE_BOOL },
};
static const struct uci_blob_param_list vlan_param = {
.n_params = ARRAY_SIZE(vlan_policy),
.params = vlan_policy,
};
enum {
STA_ATTR_DISABLED,
__STA_ATTR_MAX,
};
static const struct blobmsg_policy sta_policy[__STA_ATTR_MAX] = {
[STA_ATTR_DISABLED] = { .name = "disabled", .type = BLOBMSG_TYPE_BOOL },
};
static const struct uci_blob_param_list station_param = {
.n_params = ARRAY_SIZE(sta_policy),
.params = sta_policy,
};
static void
wireless_handler_stop(struct wireless_device *wdev)
{
if (wdev->handler_pending) {
wdev->handler_pending = false;
list_del(&wdev->handler);
}
}
static void
put_container(struct blob_buf *buf, struct blob_attr *attr, const char *name)
{
void *c = blobmsg_open_table(buf, name);
blob_put_raw(buf, blobmsg_data(attr), blobmsg_len(attr));
blobmsg_close_table(buf, c);
}
static void
vif_config_add_bridge(struct blob_buf *buf, struct blob_attr *networks, bool prepare)
{
struct interface *iface;
struct device *dev = NULL, *orig_dev;
struct blob_attr *cur;
const char *network;
size_t rem;
if (!networks)
return;
blobmsg_for_each_attr(cur, networks, rem) {
network = blobmsg_data(cur);
iface = vlist_find(&interfaces, network, iface, node);
if (!iface)
continue;
dev = iface->main_dev.dev;
if (!dev)
return;
if (!dev->hotplug_ops)
return;
}
if (!dev)
return;
orig_dev = dev;
if (dev->hotplug_ops && dev->hotplug_ops->prepare)
dev->hotplug_ops->prepare(dev, &dev);
if (!dev || !dev->type->bridge_capability)
return;
blobmsg_add_string(buf, "bridge", dev->ifname);
blobmsg_add_string(buf, "bridge-ifname", orig_dev->ifname);
if (dev->settings.flags & DEV_OPT_MULTICAST_TO_UNICAST)
blobmsg_add_u8(buf, "multicast_to_unicast",
dev->settings.multicast_to_unicast);
}
static void
prepare_config(struct wireless_device *wdev, struct blob_buf *buf, bool up)
{
struct wireless_interface *vif;
struct wireless_vlan *vlan;
struct wireless_station *sta;
void *l, *i, *j, *k;
blob_buf_init(&b, 0);
put_container(&b, wdev->config, "config");
if (wdev->data)
blobmsg_add_blob(&b, wdev->data);
l = blobmsg_open_table(&b, "interfaces");
vlist_for_each_element(&wdev->interfaces, vif, node) {
if (vif->disabled)
continue;
i = blobmsg_open_table(&b, vif->name);
vif_config_add_bridge(&b, vif->network, up);
put_container(&b, vif->config, "config");
if (vif->data)
blobmsg_add_blob(&b, vif->data);
j = blobmsg_open_table(&b, "vlans");
vlist_for_each_element(&vif->vlans, vlan, node) {
k = blobmsg_open_table(&b, vlan->name);
vif_config_add_bridge(&b, vlan->network, up);
put_container(&b, vlan->config, "config");
if (vlan->data)
blobmsg_add_blob(&b, vlan->data);
blobmsg_close_table(&b, k);
}
blobmsg_close_table(&b, j);
j = blobmsg_open_table(&b, "stas");
vlist_for_each_element(&vif->stations, sta, node) {
k = blobmsg_open_table(&b, sta->name);
put_container(&b, sta->config, "config");
if (sta->data)
blobmsg_add_blob(&b, sta->data);
blobmsg_close_table(&b, k);
}
blobmsg_close_table(&b, j);
blobmsg_close_table(&b, i);
}
blobmsg_close_table(&b, l);
}
static bool
wireless_process_check(struct wireless_process *proc)
{
return check_pid_path(proc->pid, proc->exe);
}
static void
wireless_complete_kill_request(struct wireless_device *wdev)
{
if (!wdev->kill_request)
return;
ubus_complete_deferred_request(ubus_ctx, wdev->kill_request, 0);
free(wdev->kill_request);
wdev->kill_request = NULL;
}
static void
wireless_process_free(struct wireless_device *wdev, struct wireless_process *proc)
{
D(WIRELESS, "Wireless device '%s' free pid %d", wdev->name, proc->pid);
list_del(&proc->list);
free(proc);
if (list_empty(&wdev->script_proc))
wireless_complete_kill_request(wdev);
}
static void
wireless_close_script_proc_fd(struct wireless_device *wdev)
{
if (wdev->script_proc_fd.fd < 0)
return;
uloop_fd_delete(&wdev->script_proc_fd);
close(wdev->script_proc_fd.fd);
wdev->script_proc_fd.fd = -1;
}
static void
wireless_process_kill_all(struct wireless_device *wdev, int signal, bool free)
{
struct wireless_process *proc, *tmp;
list_for_each_entry_safe(proc, tmp, &wdev->script_proc, list) {
bool check = wireless_process_check(proc);
if (check && !proc->keep) {
D(WIRELESS, "Wireless device '%s' kill pid %d", wdev->name, proc->pid);
kill(proc->pid, signal);
}
if (free || !check)
wireless_process_free(wdev, proc);
}
if (free)
wireless_close_script_proc_fd(wdev);
}
static void
wireless_device_free_state(struct wireless_device *wdev)
{
struct wireless_interface *vif;
struct wireless_vlan *vlan;
struct wireless_station *sta;
wireless_handler_stop(wdev);
uloop_timeout_cancel(&wdev->script_check);
uloop_timeout_cancel(&wdev->timeout);
wireless_complete_kill_request(wdev);
free(wdev->data);
wdev->data = NULL;
vlist_for_each_element(&wdev->interfaces, vif, node) {
free(vif->data);
vif->data = NULL;
vif->ifname = NULL;
vlist_for_each_element(&vif->vlans, vlan, node) {
free(vlan->data);
vlan->data = NULL;
vlan->ifname = NULL;
}
vlist_for_each_element(&vif->stations, sta, node) {
free(sta->data);
sta->data = NULL;
}
}
}
static void wireless_device_set_mcast_to_unicast(struct device *dev, int val)
{
if (val < 0) {
dev->settings.flags &= ~DEV_OPT_MULTICAST_TO_UNICAST;
return;
}
dev->settings.multicast_to_unicast = !!val;
dev->settings.flags |= DEV_OPT_MULTICAST_TO_UNICAST;
}
static void wireless_check_interface(struct blob_attr *list, int *enabled, int *ifindex)
{
struct interface *iface;
struct blob_attr *cur;
size_t rem;
blobmsg_for_each_attr(cur, list, rem) {
struct device *mdev;
iface = vlist_find(&interfaces, blobmsg_get_string(cur), iface, node);
if (!iface)
continue;
if (iface->autostart)
*enabled = 1;
else if (*enabled != 1)
*enabled = 0;
mdev = iface->main_dev.dev;
if (!mdev || !mdev->hotplug_ops)
continue;
*ifindex = mdev->ifindex;
}
}
static void wireless_interface_handle_link(struct wireless_interface *vif, const char *ifname, bool up)
{
struct interface *iface;
struct blob_attr *cur;
const char *network;
struct device *dev;
int enabled = -1;
size_t rem;
if (!vif->network || !vif->ifname)
return;
if (!ifname)
ifname = vif->ifname;
if (!up)
goto out;
dev = __device_get(ifname, 2, false);
if (!dev)
goto out;
dev->wireless = true;
dev->settings.flags |= DEV_OPT_ISOLATE;
dev->settings.isolate = vif->bridge_isolate;
if (strcmp(ifname, vif->ifname) != 0)
goto out;
dev->wireless_isolate = vif->isolate;
dev->wireless_proxyarp = vif->proxyarp;
dev->wireless_ap = vif->ap_mode;
wireless_device_set_mcast_to_unicast(dev, vif->multicast_to_unicast);
dev->bpdu_filter = dev->wireless_ap;
out:
wireless_check_interface(vif->network, &enabled, &vif->network_ifindex);
blobmsg_for_each_attr(cur, vif->network, rem) {
network = blobmsg_data(cur);
iface = vlist_find(&interfaces, network, iface, node);
if (!iface)
continue;
interface_handle_link(iface, ifname, vif->network_vlan, up, true);
}
}
static void wireless_vlan_handle_link(struct wireless_vlan *vlan, bool up)
{
struct interface *iface;
struct blob_attr *cur;
const char *network;
int enabled = -1;
size_t rem;
if (!vlan->network || !vlan->ifname)
return;
if (up) {
struct device *dev = device_get(vlan->ifname, 2);
if (dev) {
dev->wireless_isolate = vlan->isolate;
dev->wireless = true;
dev->wireless_ap = true;
dev->bpdu_filter = true;
dev->settings.flags |= DEV_OPT_ISOLATE;
dev->settings.isolate = vlan->bridge_isolate;
wireless_device_set_mcast_to_unicast(dev, vlan->multicast_to_unicast);
}
}
wireless_check_interface(vlan->network, &enabled, &vlan->network_ifindex);
blobmsg_for_each_attr(cur, vlan->network, rem) {
network = blobmsg_data(cur);
iface = vlist_find(&interfaces, network, iface, node);
if (!iface)
continue;
interface_handle_link(iface, vlan->ifname, vlan->network_vlan, up, true);
}
}
static void
wireless_device_setup_cancel(struct wireless_device *wdev)
{
if (wdev->cancel)
return;
wireless_handler_stop(wdev);
D(WIRELESS, "Cancel wireless device '%s' setup", wdev->name);
wdev->cancel = true;
uloop_timeout_set(&wdev->timeout, 10 * 1000);
}
static void
wireless_device_run_handler(struct wireless_device *wdev, bool up)
{
const char *action = up ? "setup" : "teardown";
const char *argv[6];
char *config;
int i = 0;
int fds[2] = { -1, -1 };
wireless_handler_stop(wdev);
if (handler_pending && wdev->serialize) {
wdev->handler_action = up;
wdev->handler_pending = true;
list_add_tail(&wdev->handler, &handlers);
return;
}
if (wdev->serialize)
handler_pending = true;
D(WIRELESS, "Wireless device '%s' run %s handler", wdev->name, action);
if (!up && wdev->prev_config) {
config = blobmsg_format_json(wdev->prev_config, true);
free(wdev->prev_config);
wdev->prev_config = NULL;
} else {
prepare_config(wdev, &b, up);
free(wdev->prev_config);
wdev->prev_config = up ? blob_memdup(b.head) : NULL;
config = blobmsg_format_json(b.head, true);
}
argv[i++] = wdev->drv->script;
argv[i++] = wdev->drv->name;
argv[i++] = action;
argv[i++] = wdev->name;
argv[i++] = config;
argv[i] = NULL;
if (up && pipe(fds) == 0) {
if (wdev->script_proc_fd.fd >= 0)
wireless_close_script_proc_fd(wdev);
wdev->script_proc_fd.fd = fds[0];
uloop_fd_add(&wdev->script_proc_fd,
ULOOP_READ | ULOOP_EDGE_TRIGGER);
}
netifd_start_process(argv, NULL, &wdev->script_task);
if (fds[1] >= 0)
close(fds[1]);
free(config);
}
static void
wireless_handler_next(void)
{
struct wireless_device *wdev;
if (handler_pending)
return;
if (list_empty(&handlers))
return;
wdev = list_first_entry(&handlers, struct wireless_device, handler);
list_del(&wdev->handler);
wdev->handler_pending = false;
wireless_device_run_handler(wdev, wdev->handler_action);
}
static void
__wireless_device_set_up(struct wireless_device *wdev, int force)
{
if (wdev->disabled)
return;
if (wdev->retry_setup_failed)
return;
if (!wdev->autostart)
return;
if ((!force && wdev->state != IFS_DOWN) || config_init)
return;
wdev->state = IFS_SETUP;
wireless_device_run_handler(wdev, true);
}
static void
wireless_device_free(struct wireless_device *wdev)
{
wireless_handler_stop(wdev);
vlist_flush_all(&wdev->interfaces);
avl_delete(&wireless_devices.avl, &wdev->node.avl);
free(wdev->config);
free(wdev->prev_config);
free(wdev);
}
static void
wdev_handle_config_change(struct wireless_device *wdev)
{
enum interface_config_state state = wdev->config_state;
switch(state) {
case IFC_RELOAD:
wdev->retry = WIRELESS_SETUP_RETRY;
wdev->retry_setup_failed = false;
fallthrough;
case IFC_NORMAL:
__wireless_device_set_up(wdev, 0);
wdev->config_state = IFC_NORMAL;
break;
case IFC_REMOVE:
wireless_device_free(wdev);
break;
}
}
static void
wireless_device_mark_down(struct wireless_device *wdev)
{
struct wireless_interface *vif;
struct wireless_vlan *vlan;
netifd_log_message(L_NOTICE, "Wireless device '%s' is now down\n", wdev->name);
vlist_for_each_element(&wdev->interfaces, vif, node) {
wireless_interface_handle_link(vif, NULL, false);
vlist_for_each_element(&vif->vlans, vlan, node)
wireless_vlan_handle_link(vlan, false);
}
wireless_process_kill_all(wdev, SIGTERM, true);
wdev->cancel = false;
wdev->state = IFS_DOWN;
wireless_device_free_state(wdev);
wdev_handle_config_change(wdev);
netifd_ubus_wireless_notify(wdev, false);
}
/* timeout callback to protect the tear down */
static void
wireless_device_setup_timeout(struct uloop_timeout *timeout)
{
struct wireless_device *wdev = container_of(timeout, struct wireless_device, timeout);
if (wdev->handler_pending) {
wdev->handler_pending = false;
list_del(&wdev->handler);
}
netifd_kill_process(&wdev->script_task);
wdev->script_task.cb(&wdev->script_task, -1);
wireless_device_mark_down(wdev);
}
void
wireless_device_set_up(struct wireless_device *wdev)
{
wdev->retry = WIRELESS_SETUP_RETRY;
wdev->autostart = true;
__wireless_device_set_up(wdev, 0);
}
void
wireless_device_reconf(struct wireless_device *wdev)
{
wdev->retry = WIRELESS_SETUP_RETRY;
wdev->autostart = true;
__wireless_device_set_up(wdev, wdev->reconf && (wdev->state == IFS_UP));
}
static void
__wireless_device_set_down(struct wireless_device *wdev)
{
if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN)
return;
if (wdev->script_task.uloop.pending) {
wireless_device_setup_cancel(wdev);
return;
}
wdev->state = IFS_TEARDOWN;
wireless_device_run_handler(wdev, false);
}
/* ubus callback network.wireless.notify, command = up */
static void
wireless_device_mark_up(struct wireless_device *wdev)
{
struct wireless_interface *vif;
struct wireless_vlan *vlan;
if (wdev->cancel) {
wdev->cancel = false;
__wireless_device_set_down(wdev);
return;
}
netifd_log_message(L_NOTICE, "Wireless device '%s' is now up\n", wdev->name);
wdev->retry = WIRELESS_SETUP_RETRY;
wdev->state = IFS_UP;
vlist_for_each_element(&wdev->interfaces, vif, node) {
wireless_interface_handle_link(vif, NULL, true);
vlist_for_each_element(&vif->vlans, vlan, node)
wireless_vlan_handle_link(vlan, true);
}
netifd_ubus_wireless_notify(wdev, true);
}
static void
wireless_device_retry_setup(struct wireless_device *wdev)
{
if (wdev->state == IFS_TEARDOWN || wdev->state == IFS_DOWN || wdev->cancel)
return;
netifd_log_message(wdev->retry ? L_WARNING : L_CRIT,
"Wireless device '%s' setup failed, retry=%d\n",
wdev->name, wdev->retry);
if (--wdev->retry < 0)
wdev->retry_setup_failed = true;
__wireless_device_set_down(wdev);
}
static void
wireless_device_script_task_cb(struct netifd_process *proc, int ret)
{
struct wireless_device *wdev = container_of(proc, struct wireless_device, script_task);
switch (wdev->state) {
case IFS_SETUP:
wireless_device_retry_setup(wdev);
break;
case IFS_TEARDOWN:
wireless_device_mark_down(wdev);
break;
default:
break;
}
if (wdev->serialize) {
handler_pending = false;
wireless_handler_next();
}
}
void
wireless_device_set_down(struct wireless_device *wdev)
{
wdev->retry_setup_failed = false;
wdev->autostart = false;
__wireless_device_set_down(wdev);
}
static void
wdev_set_config_state(struct wireless_device *wdev, enum interface_config_state s)
{
if (wdev->config_state != IFC_NORMAL)
return;
wdev->config_update = false;
if (!wdev->disabled && s == IFC_RELOAD && wdev->reconf && wdev->state == IFS_UP) {
wireless_device_reconf(wdev);
return;
}
wdev->config_state = s;
if (wdev->state == IFS_DOWN)
wdev_handle_config_change(wdev);
else
__wireless_device_set_down(wdev);
}
static void
wdev_prepare_prev_config(struct wireless_device *wdev)
{
prepare_config(wdev, &b, false);
free(wdev->prev_config);
wdev->prev_config = blob_memdup(b.head);
}
static void
wdev_change_config(struct wireless_device *wdev, struct wireless_device *wd_new)
{
struct blob_attr *new_config = wd_new->config;
bool disabled = wd_new->disabled;
wdev->reconf = wd_new->reconf;
wdev->serialize = wd_new->serialize;
free(wd_new);
if (blob_attr_equal(wdev->config, new_config) && wdev->disabled == disabled)
return;
D(WIRELESS, "Update configuration of wireless device '%s'", wdev->name);
free(wdev->config);
wdev->config = blob_memdup(new_config);
wdev->disabled = disabled;
wdev->config_update = true;
}
static void
wdev_create(struct wireless_device *wdev)
{
wdev->retry = WIRELESS_SETUP_RETRY;
wdev->config = blob_memdup(wdev->config);
}
/* vlist update call for wireless device list */
static void
wdev_update(struct vlist_tree *tree, struct vlist_node *node_new,
struct vlist_node *node_old)
{
struct wireless_device *wd_old = container_of(node_old, struct wireless_device, node);
struct wireless_device *wd_new = container_of(node_new, struct wireless_device, node);
if (wd_old && wd_new) {
D(WIRELESS, "Update wireless device '%s'", wd_old->name);
wdev_change_config(wd_old, wd_new);
} else if (wd_old) {
D(WIRELESS, "Delete wireless device '%s'", wd_old->name);
wdev_set_config_state(wd_old, IFC_REMOVE);
} else if (wd_new) {
D(WIRELESS, "Create wireless device '%s'", wd_new->name);
wdev_create(wd_new);
}
}
/* wireless netifd script handler */
static void
wireless_add_handler(const char *script, const char *name, json_object *obj)
{
struct wireless_driver *drv;
char *name_str, *script_str;
json_object *dev_config_obj, *iface_config_obj, *vlan_config_obj, *station_config_obj;
struct uci_blob_param_list *dev_config, *iface_config, *vlan_config, *station_config;
dev_config_obj = json_get_field(obj, "device", json_type_array);
iface_config_obj = json_get_field(obj, "iface", json_type_array);
vlan_config_obj = json_get_field(obj, "vlan", json_type_array);
station_config_obj = json_get_field(obj, "station", json_type_array);
if (!dev_config_obj || !iface_config_obj || !vlan_config_obj || !station_config_obj)
return;
drv = calloc_a(sizeof(*drv),
&dev_config, sizeof(*dev_config) + sizeof(void *),
&iface_config, sizeof(*iface_config) + sizeof(void *),
&vlan_config, sizeof(*vlan_config) + sizeof(void *),
&station_config, sizeof(*station_config) + sizeof(void *),
&name_str, strlen(name) + 1,
&script_str, strlen(script) + 1);
drv->name = strcpy(name_str, name);
drv->script = strcpy(script_str, script);
dev_config->n_next = 1;
dev_config->next[0] = &wdev_param;
drv->device.config = dev_config;
iface_config->n_next = 1;
iface_config->next[0] = &vif_param;
drv->interface.config = iface_config;
vlan_config->n_next = 1;
vlan_config->next[0] = &vlan_param;
drv->vlan.config = vlan_config;
station_config->n_next = 1;
station_config->next[0] = &station_param;
drv->station.config = station_config;
drv->device.buf = netifd_handler_parse_config(drv->device.config, dev_config_obj);
drv->interface.buf = netifd_handler_parse_config(drv->interface.config, iface_config_obj);
drv->vlan.buf = netifd_handler_parse_config(drv->vlan.config, vlan_config_obj);
drv->station.buf = netifd_handler_parse_config(drv->station.config, station_config_obj);
drv->node.key = drv->name;
avl_insert(&wireless_drivers, &drv->node);
D(WIRELESS, "Add handler for script %s: %s", script, name);
}
void wireless_init(void)
{
vlist_init(&wireless_devices, avl_strcmp, wdev_update);
wireless_devices.keep_old = true;
wireless_devices.no_delete = true;
avl_init(&wireless_drivers, avl_strcmp, false, NULL);
drv_fd = netifd_open_subdir("wireless");
if (drv_fd < 0)
return;
netifd_init_script_handlers(drv_fd, wireless_add_handler);
}
/* parse blob config into the wireless interface object */
static void
wireless_interface_init_config(struct wireless_interface *vif)
{
struct blob_attr *tb[__VIF_ATTR_MAX];
struct blob_attr *cur;
vif->network = NULL;
blobmsg_parse_attr(vif_policy, __VIF_ATTR_MAX, tb, vif->config);
if ((cur = tb[VIF_ATTR_NETWORK]))
vif->network = cur;
if ((cur = tb[VIF_ATTR_NETWORK_VLAN]))
vif->network_vlan = cur;
cur = tb[VIF_ATTR_MODE];
vif->ap_mode = cur && !strcmp(blobmsg_get_string(cur), "ap");
cur = tb[VIF_ATTR_BRIDGE_ISOLATE];
vif->bridge_isolate = cur && blobmsg_get_bool(cur);
cur = tb[VIF_ATTR_ISOLATE];
vif->isolate = cur && blobmsg_get_bool(cur);
cur = tb[VIF_ATTR_PROXYARP];
vif->proxyarp = vif->ap_mode && cur && blobmsg_get_bool(cur);
cur = tb[VIF_ATTR_MCAST_TO_UCAST];
vif->multicast_to_unicast = cur ? blobmsg_get_bool(cur) : -1;
}
static void
vif_free(struct wireless_interface *vif)
{
vlist_flush_all(&vif->vlans);
vlist_flush_all(&vif->stations);
free((void *) vif->section);
free(vif->config);
free(vif);
}
/* vlist update call for wireless interface list */
static void
vif_update(struct vlist_tree *tree, struct vlist_node *node_new,
struct vlist_node *node_old)
{
struct wireless_interface *vif_old = container_of(node_old, struct wireless_interface, node);
struct wireless_interface *vif_new = container_of(node_new, struct wireless_interface, node);
struct wireless_device *wdev;
if (vif_old)
wdev = vif_old->wdev;
else
wdev = vif_new->wdev;
if (vif_old && vif_new) {
free((void *) vif_old->section);
vif_old->section = strdup(vif_new->section);
if (blob_attr_equal(vif_old->config, vif_new->config)) {
free(vif_new);
return;
}
D(WIRELESS, "Update wireless interface %s on device %s", vif_new->name, wdev->name);
wireless_interface_handle_link(vif_old, NULL, false);
free(vif_old->config);
vif_old->config = blob_memdup(vif_new->config);
wireless_interface_init_config(vif_old);
free(vif_new);
} else if (vif_new) {
D(WIRELESS, "Create new wireless interface %s on device %s", vif_new->name, wdev->name);
vif_new->section = strdup(vif_new->section);
vif_new->config = blob_memdup(vif_new->config);
wireless_interface_init_config(vif_new);
} else if (vif_old) {
D(WIRELESS, "Delete wireless interface %s on device %s", vif_old->name, wdev->name);
wireless_interface_handle_link(vif_old, NULL, false);
vif_free(vif_old);
}
wdev->config_update = true;
}
/* parse blob config into the vlan object */
static void
wireless_vlan_init_config(struct wireless_vlan *vlan)
{
struct blob_attr *tb[__VLAN_ATTR_MAX];
struct blob_attr *cur;
vlan->network = NULL;
blobmsg_parse_attr(vlan_policy, __VLAN_ATTR_MAX, tb, vlan->config);
if ((cur = tb[VLAN_ATTR_NETWORK]))
vlan->network = cur;
if ((cur = tb[VLAN_ATTR_NETWORK_VLAN]))
vlan->network_vlan = cur;
cur = tb[VLAN_ATTR_BRIDGE_ISOLATE];
vlan->bridge_isolate = cur && blobmsg_get_bool(cur);
cur = tb[VLAN_ATTR_ISOLATE];
vlan->isolate = cur && blobmsg_get_bool(cur);
cur = tb[VLAN_ATTR_MCAST_TO_UCAST];
vlan->multicast_to_unicast = cur ? blobmsg_get_bool(cur) : -1;
}
/* vlist update call for vlan list */
static void
vlan_update(struct vlist_tree *tree, struct vlist_node *node_new,
struct vlist_node *node_old)
{
struct wireless_vlan *vlan_old = container_of_safe(node_old, struct wireless_vlan, node);
struct wireless_vlan *vlan_new = container_of_safe(node_new, struct wireless_vlan, node);
struct wireless_interface *vif = container_of(tree, struct wireless_interface, vlans);
struct wireless_device *wdev = vif->wdev;
if (vlan_old && vlan_new) {
free((void *) vlan_old->section);
vlan_old->section = strdup(vlan_new->section);
if (blob_attr_equal(vlan_old->config, vlan_new->config)) {
free(vlan_new);
return;
}
D(WIRELESS, "Update wireless vlan %s on device %s", vlan_new->name, wdev->name);
wireless_vlan_handle_link(vlan_old, false);
free(vlan_old->config);
vlan_old->config = blob_memdup(vlan_new->config);
vlan_old->isolate = vlan_new->isolate;
wireless_vlan_init_config(vlan_old);
free(vlan_new);
} else if (vlan_new) {