Release 4.11 net/wireless/core.c
/*
* This is the linux wireless configuration interface.
*
* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
* Copyright 2013-2014 Intel Mobile Communications GmbH
* Copyright 2015 Intel Deutschland GmbH
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/if.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/list.h>
#include <linux/slab.h>
#include <linux/nl80211.h>
#include <linux/debugfs.h>
#include <linux/notifier.h>
#include <linux/device.h>
#include <linux/etherdevice.h>
#include <linux/rtnetlink.h>
#include <linux/sched.h>
#include <net/genetlink.h>
#include <net/cfg80211.h>
#include "nl80211.h"
#include "core.h"
#include "sysfs.h"
#include "debugfs.h"
#include "wext-compat.h"
#include "rdev-ops.h"
/* name for sysfs, %d is appended */
#define PHY_NAME "phy"
MODULE_AUTHOR("Johannes Berg");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("wireless configuration support");
MODULE_ALIAS_GENL_FAMILY(NL80211_GENL_NAME);
/* RCU-protected (and RTNL for writers) */
LIST_HEAD(cfg80211_rdev_list);
int cfg80211_rdev_list_generation;
/* for debugfs */
static struct dentry *ieee80211_debugfs_dir;
/* for the cleanup, scan and event works */
struct workqueue_struct *cfg80211_wq;
static bool cfg80211_disable_40mhz_24ghz;
module_param(cfg80211_disable_40mhz_24ghz, bool, 0644);
MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz,
"Disable 40MHz support in the 2.4GHz band");
struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx)
{
struct cfg80211_registered_device *result = NULL, *rdev;
ASSERT_RTNL();
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
if (rdev->wiphy_idx == wiphy_idx) {
result = rdev;
break;
}
}
return result;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 46 | 90.20% | 3 | 60.00% |
Luis R. Rodriguez | 5 | 9.80% | 2 | 40.00% |
Total | 51 | 100.00% | 5 | 100.00% |
int get_wiphy_idx(struct wiphy *wiphy)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
return rdev->wiphy_idx;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Luis R. Rodriguez | 20 | 80.00% | 1 | 25.00% |
Johannes Berg | 4 | 16.00% | 2 | 50.00% |
Zhao, Gang | 1 | 4.00% | 1 | 25.00% |
Total | 25 | 100.00% | 4 | 100.00% |
struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx)
{
struct cfg80211_registered_device *rdev;
ASSERT_RTNL();
rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx);
if (!rdev)
return NULL;
return &rdev->wiphy;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Luis R. Rodriguez | 33 | 84.62% | 1 | 33.33% |
Johannes Berg | 6 | 15.38% | 2 | 66.67% |
Total | 39 | 100.00% | 3 | 100.00% |
static int cfg80211_dev_check_name(struct cfg80211_registered_device *rdev,
const char *newname)
{
struct cfg80211_registered_device *rdev2;
int wiphy_idx, taken = -1, digits;
ASSERT_RTNL();
/* prohibit calling the thing phy%d when %d is not its number */
sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken);
if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) {
/* count number of places needed to print wiphy_idx */
digits = 1;
while (wiphy_idx /= 10)
digits++;
/*
* deny the name if it is phy<idx> where <idx> is printed
* without leading zeroes. taken == strlen(newname) here
*/
if (taken == strlen(PHY_NAME) + digits)
return -EINVAL;
}
/* Ensure another device does not already have this name. */
list_for_each_entry(rdev2, &cfg80211_rdev_list, list)
if (strcmp(newname, wiphy_name(&rdev2->wiphy)) == 0)
return -EINVAL;
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 90 | 69.77% | 5 | 71.43% |
Eric W. Biedermann | 20 | 15.50% | 1 | 14.29% |
Ben Greear | 19 | 14.73% | 1 | 14.29% |
Total | 129 | 100.00% | 7 | 100.00% |
int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
char *newname)
{
int result;
ASSERT_RTNL();
/* Ignore nop renames */
if (strcmp(newname, wiphy_name(&rdev->wiphy)) == 0)
return 0;
result = cfg80211_dev_check_name(rdev, newname);
if (result < 0)
return result;
result = device_rename(&rdev->wiphy.dev, newname);
if (result)
return result;
if (rdev->wiphy.debugfsdir &&
!debugfs_rename(rdev->wiphy.debugfsdir->d_parent,
rdev->wiphy.debugfsdir,
rdev->wiphy.debugfsdir->d_parent,
newname))
pr_err("failed to rename debugfs dir to %s!\n", newname);
nl80211_notify_wiphy(rdev, NL80211_CMD_NEW_WIPHY);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 75 | 56.39% | 4 | 57.14% |
Ben Greear | 41 | 30.83% | 1 | 14.29% |
Eric W. Biedermann | 15 | 11.28% | 1 | 14.29% |
Joe Perches | 2 | 1.50% | 1 | 14.29% |
Total | 133 | 100.00% | 7 | 100.00% |
int cfg80211_switch_netns(struct cfg80211_registered_device *rdev,
struct net *net)
{
struct wireless_dev *wdev;
int err = 0;
if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK))
return -EOPNOTSUPP;
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
if (!wdev->netdev)
continue;
wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL;
err = dev_change_net_namespace(wdev->netdev, net, "wlan%d");
if (err)
break;
wdev->netdev->features |= NETIF_F_NETNS_LOCAL;
}
if (err) {
/* failed -- clean up to old netns */
net = wiphy_net(&rdev->wiphy);
list_for_each_entry_continue_reverse(wdev,
&rdev->wiphy.wdev_list,
list) {
if (!wdev->netdev)
continue;
wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL;
err = dev_change_net_namespace(wdev->netdev, net,
"wlan%d");
WARN_ON(err);
wdev->netdev->features |= NETIF_F_NETNS_LOCAL;
}
return err;
}
wiphy_net_set(&rdev->wiphy, net);
err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev));
WARN_ON(err);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 208 | 100.00% | 5 | 100.00% |
Total | 208 | 100.00% | 5 | 100.00% |
static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data)
{
struct cfg80211_registered_device *rdev = data;
rdev_rfkill_poll(rdev);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 26 | 96.30% | 2 | 66.67% |
Hila Gonen | 1 | 3.70% | 1 | 33.33% |
Total | 27 | 100.00% | 3 | 100.00% |
void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev)
{
ASSERT_RTNL();
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE))
return;
if (!wdev_running(wdev))
return;
rdev_stop_p2p_device(rdev, wdev);
wdev->is_running = false;
rdev->opencount--;
if (rdev->scan_req && rdev->scan_req->wdev == wdev) {
if (WARN_ON(!rdev->scan_req->notified))
rdev->scan_req->info.aborted = true;
___cfg80211_scan_done(rdev, false);
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 96 | 94.12% | 5 | 71.43% |
Arend Van Spriel | 4 | 3.92% | 1 | 14.29% |
Avraham Stern | 2 | 1.96% | 1 | 14.29% |
Total | 102 | 100.00% | 7 | 100.00% |
void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev)
{
ASSERT_RTNL();
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_NAN))
return;
if (!wdev_running(wdev))
return;
rdev_stop_nan(rdev, wdev);
wdev->is_running = false;
rdev->opencount--;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Ayala Beker | 53 | 92.98% | 1 | 50.00% |
Arend Van Spriel | 4 | 7.02% | 1 | 50.00% |
Total | 57 | 100.00% | 2 | 100.00% |
void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
struct wireless_dev *wdev;
ASSERT_RTNL();
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
if (wdev->netdev) {
dev_close(wdev->netdev);
continue;
}
/* otherwise, check iftype */
switch (wdev->iftype) {
case NL80211_IFTYPE_P2P_DEVICE:
cfg80211_stop_p2p_device(rdev, wdev);
break;
case NL80211_IFTYPE_NAN:
cfg80211_stop_nan(rdev, wdev);
break;
default:
break;
}
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 76 | 87.36% | 7 | 87.50% |
Ayala Beker | 11 | 12.64% | 1 | 12.50% |
Total | 87 | 100.00% | 8 | 100.00% |
EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces);
static int cfg80211_rfkill_set_block(void *data, bool blocked)
{
struct cfg80211_registered_device *rdev = data;
if (!blocked)
return 0;
rtnl_lock();
cfg80211_shutdown_all_interfaces(&rdev->wiphy);
rtnl_unlock();
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 45 | 100.00% | 2 | 100.00% |
Total | 45 | 100.00% | 2 | 100.00% |
static void cfg80211_rfkill_sync_work(struct work_struct *work)
{
struct cfg80211_registered_device *rdev;
rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync);
cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill));
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 40 | 100.00% | 2 | 100.00% |
Total | 40 | 100.00% | 2 | 100.00% |
static void cfg80211_event_work(struct work_struct *work)
{
struct cfg80211_registered_device *rdev;
rdev = container_of(work, struct cfg80211_registered_device,
event_work);
rtnl_lock();
cfg80211_process_rdev_events(rdev);
rtnl_unlock();
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 39 | 100.00% | 2 | 100.00% |
Total | 39 | 100.00% | 2 | 100.00% |
void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev)
{
struct cfg80211_iface_destroy *item;
ASSERT_RTNL();
spin_lock_irq(&rdev->destroy_list_lock);
while ((item = list_first_entry_or_null(&rdev->destroy_list,
struct cfg80211_iface_destroy,
list))) {
struct wireless_dev *wdev, *tmp;
u32 nlportid = item->nlportid;
list_del(&item->list);
kfree(item);
spin_unlock_irq(&rdev->destroy_list_lock);
list_for_each_entry_safe(wdev, tmp,
&rdev->wiphy.wdev_list, list) {
if (nlportid == wdev->owner_nlportid)
rdev_del_virtual_intf(rdev, wdev);
}
spin_lock_irq(&rdev->destroy_list_lock);
}
spin_unlock_irq(&rdev->destroy_list_lock);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 126 | 100.00% | 2 | 100.00% |
Total | 126 | 100.00% | 2 | 100.00% |
static void cfg80211_destroy_iface_wk(struct work_struct *work)
{
struct cfg80211_registered_device *rdev;
rdev = container_of(work, struct cfg80211_registered_device,
destroy_work);
rtnl_lock();
cfg80211_destroy_ifaces(rdev);
rtnl_unlock();
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 39 | 100.00% | 1 | 100.00% |
Total | 39 | 100.00% | 1 | 100.00% |
static void cfg80211_sched_scan_stop_wk(struct work_struct *work)
{
struct cfg80211_registered_device *rdev;
rdev = container_of(work, struct cfg80211_registered_device,
sched_scan_stop_wk);
rtnl_lock();
__cfg80211_stop_sched_scan(rdev, false);
rtnl_unlock();
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jukka Rissanen | 41 | 100.00% | 1 | 100.00% |
Total | 41 | 100.00% | 1 | 100.00% |
/* exported functions */
struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv,
const char *requested_name)
{
static atomic_t wiphy_counter = ATOMIC_INIT(0);
struct cfg80211_registered_device *rdev;
int alloc_size;
WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key));
WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc));
WARN_ON(ops->connect && !ops->disconnect);
WARN_ON(ops->join_ibss && !ops->leave_ibss);
WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf);
WARN_ON(ops->add_station && !ops->del_station);
WARN_ON(ops->add_mpath && !ops->del_mpath);
WARN_ON(ops->join_mesh && !ops->leave_mesh);
WARN_ON(ops->start_p2p_device && !ops->stop_p2p_device);
WARN_ON(ops->start_ap && !ops->stop_ap);
WARN_ON(ops->join_ocb && !ops->leave_ocb);
WARN_ON(ops->suspend && !ops->resume);
WARN_ON(ops->sched_scan_start && !ops->sched_scan_stop);
WARN_ON(ops->remain_on_channel && !ops->cancel_remain_on_channel);
WARN_ON(ops->tdls_channel_switch && !ops->tdls_cancel_channel_switch);
WARN_ON(ops->add_tx_ts && !ops->del_tx_ts);
alloc_size = sizeof(*rdev) + sizeof_priv;
rdev = kzalloc(alloc_size, GFP_KERNEL);
if (!rdev)
return NULL;
rdev->ops = ops;
rdev->wiphy_idx = atomic_inc_return(&wiphy_counter);
if (unlikely(rdev->wiphy_idx < 0)) {
/* ugh, wrapped! */
atomic_dec(&wiphy_counter);
kfree(rdev);
return NULL;
}
/* atomic_inc_return makes it start at 1, make it start at 0 */
rdev->wiphy_idx--;
/* give it a proper name */
if (requested_name && requested_name[0]) {
int rv;
rtnl_lock();
rv = cfg80211_dev_check_name(rdev, requested_name);
if (rv < 0) {
rtnl_unlock();
goto use_default_name;
}
rv = dev_set_name(&rdev->wiphy.dev, "%s", requested_name);
rtnl_unlock();
if (rv)
goto use_default_name;
} else {
use_default_name:
/* NOTE: This is *probably* safe w/out holding rtnl because of
* the restrictions on phy names. Probably this call could
* fail if some other part of the kernel (re)named a device
* phyX. But, might should add some locking and check return
* value, and use a different name if this one exists?
*/
dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx);
}
INIT_LIST_HEAD(&rdev->wiphy.wdev_list);
INIT_LIST_HEAD(&rdev->beacon_registrations);
spin_lock_init(&rdev->beacon_registrations_lock);
spin_lock_init(&rdev->bss_lock);
INIT_LIST_HEAD(&rdev->bss_list);
INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done);
INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results);
INIT_LIST_HEAD(&rdev->mlme_unreg);
spin_lock_init(&rdev->mlme_unreg_lock);
INIT_WORK(&rdev->mlme_unreg_wk, cfg80211_mlme_unreg_wk);
INIT_DELAYED_WORK(&rdev->dfs_update_channels_wk,
cfg80211_dfs_channels_update_work);
#ifdef CONFIG_CFG80211_WEXT
rdev->wiphy.wext = &cfg80211_wext_handler;
#endif
device_initialize(&rdev->wiphy.dev);
rdev->wiphy.dev.class = &ieee80211_class;
rdev->wiphy.dev.platform_data = rdev;
device_enable_async_suspend(&rdev->wiphy.dev);
INIT_LIST_HEAD(&rdev->destroy_list);
spin_lock_init(&rdev->destroy_list_lock);
INIT_WORK(&rdev->destroy_work, cfg80211_destroy_iface_wk);
INIT_WORK(&rdev->sched_scan_stop_wk, cfg80211_sched_scan_stop_wk);
#ifdef CONFIG_CFG80211_DEFAULT_PS
rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
#endif
wiphy_net_set(&rdev->wiphy, &init_net);
rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block;
rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev),
&rdev->wiphy.dev, RFKILL_TYPE_WLAN,
&rdev->rfkill_ops, rdev);
if (!rdev->rfkill) {
kfree(rdev);
return NULL;
}
INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work);
INIT_WORK(&rdev->conn_work, cfg80211_conn_work);
INIT_WORK(&rdev->event_work, cfg80211_event_work);
init_waitqueue_head(&rdev->dev_wait);
/*
* Initialize wiphy parameters to IEEE 802.11 MIB default values.
* Fragmentation and RTS threshold are disabled by default with the
* special -1 value.
*/
rdev->wiphy.retry_short = 7;
rdev->wiphy.retry_long = 4;
rdev->wiphy.frag_threshold = (u32) -1;
rdev->wiphy.rts_threshold = (u32) -1;
rdev->wiphy.coverage_class = 0;
rdev->wiphy.max_num_csa_counters = 1;
rdev->wiphy.max_sched_scan_plans = 1;
rdev->wiphy.max_sched_scan_plan_interval = U32_MAX;
return &rdev->wiphy;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 493 | 61.32% | 23 | 60.53% |
Ola Olsson | 96 | 11.94% | 1 | 2.63% |
Ben Greear | 94 | 11.69% | 2 | 5.26% |
Jouni Malinen | 37 | 4.60% | 1 | 2.63% |
Avraham Stern | 16 | 1.99% | 1 | 2.63% |
Fu Zhonghui | 10 | 1.24% | 1 | 2.63% |
Simon Wunderlich | 10 | 1.24% | 1 | 2.63% |
Jukka Rissanen | 10 | 1.24% | 1 | 2.63% |
Luciano Coelho | 10 | 1.24% | 1 | 2.63% |
Andrei Otcheretianski | 8 | 1.00% | 1 | 2.63% |
Lukáš Turek | 8 | 1.00% | 1 | 2.63% |
Cheng Renquan | 7 | 0.87% | 1 | 2.63% |
Luis R. Rodriguez | 2 | 0.25% | 1 | 2.63% |
Kay Sievers | 2 | 0.25% | 1 | 2.63% |
David Kilroy | 1 | 0.12% | 1 | 2.63% |
Total | 804 | 100.00% | 38 | 100.00% |
EXPORT_SYMBOL(wiphy_new_nm);
static int wiphy_verify_combinations(struct wiphy *wiphy)
{
const struct ieee80211_iface_combination *c;
int i, j;
for (i = 0; i < wiphy->n_iface_combinations; i++) {
u32 cnt = 0;
u16 all_iftypes = 0;
c = &wiphy->iface_combinations[i];
/*
* Combinations with just one interface aren't real,
* however we make an exception for DFS.
*/
if (WARN_ON((c->max_interfaces < 2) && !c->radar_detect_widths))
return -EINVAL;
/* Need at least one channel */
if (WARN_ON(!c->num_different_channels))
return -EINVAL;
/*
* Put a sane limit on maximum number of different
* channels to simplify channel accounting code.
*/
if (WARN_ON(c->num_different_channels >
CFG80211_MAX_NUM_DIFFERENT_CHANNELS))
return -EINVAL;
/* DFS only works on one channel. */
if (WARN_ON(c->radar_detect_widths &&
(c->num_different_channels > 1)))
return -EINVAL;
if (WARN_ON(!c->n_limits))
return -EINVAL;
for (j = 0; j < c->n_limits; j++) {
u16 types = c->limits[j].types;
/* interface types shouldn't overlap */
if (WARN_ON(types & all_iftypes))
return -EINVAL;
all_iftypes |= types;
if (WARN_ON(!c->limits[j].max))
return -EINVAL;
/* Shouldn't list software iftypes in combinations! */
if (WARN_ON(wiphy->software_iftypes & types))
return -EINVAL;
/* Only a single P2P_DEVICE can be allowed */
if (WARN_ON(types & BIT(NL80211_IFTYPE_P2P_DEVICE) &&
c->limits[j].max > 1))
return -EINVAL;
/* Only a single NAN can be allowed */
if (WARN_ON(types & BIT(NL80211_IFTYPE_NAN) &&
c->limits[j].max > 1))
return -EINVAL;
/*
* This isn't well-defined right now. If you have an
* IBSS interface, then its beacon interval may change
* by joining other networks, and nothing prevents it
* from doing that.
* So technically we probably shouldn't even allow AP
* and IBSS in the same interface, but it seems that
* some drivers support that, possibly only with fixed
* beacon intervals for IBSS.
*/
if (WARN_ON(types & BIT(NL80211_IFTYPE_ADHOC) &&
c->beacon_int_min_gcd)) {
return -EINVAL;
}
cnt += c->limits[j].max;
/*
* Don't advertise an unsupported type
* in a combination.
*/
if (WARN_ON((wiphy->interface_modes & types) != types))
return -EINVAL;
}
#ifndef CONFIG_WIRELESS_WDS
if (WARN_ON(all_iftypes & BIT(NL80211_IFTYPE_WDS)))
return -EINVAL;
#endif
/* You can't even choose that many! */
if (WARN_ON(cnt < c->max_interfaces))
return -EINVAL;
}
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Johannes Berg | 306 | 80.31% | 4 | 50.00% |
Simon Wunderlich | 30 | 7.87% | 1 | 12.50% |
Ayala Beker | 28 | 7.35% | 1 | 12.50% |
Michal Kazior | 16 | 4.20% | 1 | 12.50% |
Luciano Coelho | 1 | 0.26% | 1 | 12.50% |
Total | 381 | 100.00% | 8 | 100.00% |
int wiphy_register(struct wiphy *wiphy)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
int res;
enum nl80211_band band;
struct ieee80211_supported_band *sband;
bool have_band = false;
int i;
u16 ifmodes = wiphy->interface_modes;
#ifdef CONFIG_PM
if (WARN_ON(wiphy->wowlan &&
(wiphy->wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) &&
!(wiphy->wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY)))
return -EINVAL;
if (WARN_ON(wiphy->wowlan &&
!wiphy->wowlan->flags && !wiphy->wowlan->n_patterns &&
!wiphy->wowlan->tcp))
return -EINVAL;
#endif
if (WARN_ON((wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH) &&
(!rdev->ops->tdls_channel_switch ||
!rdev->ops->tdls_cancel_channel_switch)))
return -EINVAL;
if (WARN_ON((wiphy->interface_modes & BIT(NL80211_IFTYPE_NAN)) &&
(!rdev->ops->start_nan || !rdev->ops->stop_nan ||
!rdev->ops->add_nan_func || !rdev->ops->del_nan_func ||
!(wiphy->nan_supported_bands & BIT(NL80211_BAND_2GHZ)))))
return -EINVAL;
#ifndef CONFIG_WIRELESS_WDS
if (WARN_ON(wiphy->interface_modes & BIT(NL80211_IFTYPE_WDS)))
return -EINVAL;
#endif
/*
* if a wiphy has unsupported modes for regulatory channel enforcement,
* opt-out of enforcement checking
*/
if (wiphy->interface_modes & ~(BIT(NL80211_IFTYPE_STATION) |
BIT(NL80211_IFTYPE_P2P_CLIENT) |
BIT(NL80211_IFTYPE_AP) |
BIT(NL80211_IFTYPE_P2P_GO) |
BIT(NL80211_IFTYPE_ADHOC) |
BIT(NL80211_IFTYPE_P2P_DEVICE) |
BIT(NL80211_IFTYPE_NAN) |
BIT(NL80211_IFTYPE_AP_VLAN) |
BIT(NL80211_IFTYPE_MONITOR)))
wiphy->regulatory_flags |= REGULATORY_IGNORE_STALE_KICKOFF;
if (WARN_ON((wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED) &&
(wiphy->regulatory_flags &
(REGULATORY_CUSTOM_REG |
REGULATORY_STRICT_REG |
REGULATORY_COUNTRY_IE_FOLLOW_POWER |
REGULATORY_COUNTRY_IE_IGNORE))))
return -EINVAL;
if (WARN_ON(wiphy->coalesce &&
(!wiphy->coalesce->n_rules ||
!wiphy->coalesce->n_patterns) &&
(!wiphy->coalesce->pattern_min_len ||
wiphy->coalesce->pattern_min_len >
wiphy->coalesce->pattern_max_len)))
return -EINVAL;
if (WARN_ON(wiphy->ap_sme_capa &&
!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME)))
return -EINVAL;
if (WARN_ON(wiphy->addresses && !wiphy->n_addresses))
return -EINVAL;
if (WARN_ON(wiphy->addresses &&
!is_zero_ether_addr(wiphy->perm_addr) &&
memcmp(wiphy->perm_addr, wiphy->addresses[0].addr,
ETH_ALEN)))
return -EINVAL;
if (WARN_ON(wiphy->max_acl_mac_addrs &&
(!(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME