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authorJohannes Berg <johannes.berg@intel.com>2021-01-22 16:19:43 +0100
committerJohannes Berg <johannes.berg@intel.com>2021-01-26 11:55:50 +0100
commita05829a7222e9d10c416dd2dbbf3929fe6646b89 (patch)
tree87d6d74e56da555ca3976d42fa94589f917b23ce /net/wireless
parentcfg80211: change netdev registration/unregistration semantics (diff)
downloadlinux-dev-a05829a7222e9d10c416dd2dbbf3929fe6646b89.tar.xz
linux-dev-a05829a7222e9d10c416dd2dbbf3929fe6646b89.zip
cfg80211: avoid holding the RTNL when calling the driver
Currently, _everything_ in cfg80211 holds the RTNL, and if you have a slow USB device (or a few) you can get some bad lock contention on that. Fix that by re-adding a mutex to each wiphy/rdev as we had at some point, so we have locking for the wireless_dev lists and all the other things in there, and also so that drivers still don't have to worry too much about it (they still won't get parallel calls for a single device). Then, we can restrict the RTNL to a few cases where we add or remove interfaces and really need the added protection. Some of the global list management still also uses the RTNL, since we need to have it anyway for netdev management, but we only hold the RTNL for very short periods of time here. Link: https://lore.kernel.org/r/20210122161942.81df9f5e047a.I4a8e1a60b18863ea8c5e6d3a0faeafb2d45b2f40@changeid Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> [marvell driver issues] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/chan.c5
-rw-r--r--net/wireless/core.c46
-rw-r--r--net/wireless/core.h2
-rw-r--r--net/wireless/debugfs.c4
-rw-r--r--net/wireless/ibss.c3
-rw-r--r--net/wireless/mlme.c6
-rw-r--r--net/wireless/nl80211.c657
-rw-r--r--net/wireless/reg.c91
-rw-r--r--net/wireless/reg.h1
-rw-r--r--net/wireless/scan.c35
-rw-r--r--net/wireless/sme.c5
-rw-r--r--net/wireless/sysfs.c5
-rw-r--r--net/wireless/util.c4
-rw-r--r--net/wireless/wext-compat.c271
-rw-r--r--net/wireless/wext-sme.c4
15 files changed, 692 insertions, 447 deletions
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index e4030f1fbc60..285b8076054b 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c
@@ -1093,7 +1093,7 @@ static bool cfg80211_ir_permissive_chan(struct wiphy *wiphy,
struct wireless_dev *wdev;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
if (!IS_ENABLED(CONFIG_CFG80211_REG_RELAX_NO_IR) ||
!(wiphy->regulatory_flags & REGULATORY_ENABLE_RELAX_NO_IR))
@@ -1216,9 +1216,10 @@ bool cfg80211_reg_can_beacon_relax(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef,
enum nl80211_iftype iftype)
{
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
bool check_no_ir;
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
/*
* Under certain conditions suggested by some regulatory bodies a
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 9e7d1f9620bd..200cd9f5fd5f 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -222,7 +222,7 @@ static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data)
void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev)
{
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE))
return;
@@ -247,7 +247,7 @@ void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev)
{
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_NAN))
return;
@@ -273,7 +273,11 @@ void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy)
dev_close(wdev->netdev);
continue;
}
+
/* otherwise, check iftype */
+
+ wiphy_lock(wiphy);
+
switch (wdev->iftype) {
case NL80211_IFTYPE_P2P_DEVICE:
cfg80211_stop_p2p_device(rdev, wdev);
@@ -284,6 +288,8 @@ void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy)
default:
break;
}
+
+ wiphy_unlock(wiphy);
}
}
EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces);
@@ -318,9 +324,9 @@ static void cfg80211_event_work(struct work_struct *work)
rdev = container_of(work, struct cfg80211_registered_device,
event_work);
- rtnl_lock();
+ wiphy_lock(&rdev->wiphy);
cfg80211_process_rdev_events(rdev);
- rtnl_unlock();
+ wiphy_unlock(&rdev->wiphy);
}
void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev)
@@ -475,6 +481,7 @@ use_default_name:
}
}
+ mutex_init(&rdev->wiphy.mtx);
INIT_LIST_HEAD(&rdev->wiphy.wdev_list);
INIT_LIST_HEAD(&rdev->beacon_registrations);
spin_lock_init(&rdev->beacon_registrations_lock);
@@ -1007,15 +1014,16 @@ void wiphy_unregister(struct wiphy *wiphy)
wait_event(rdev->dev_wait, ({
int __count;
- rtnl_lock();
+ wiphy_lock(&rdev->wiphy);
__count = rdev->opencount;
- rtnl_unlock();
+ wiphy_unlock(&rdev->wiphy);
__count == 0; }));
if (rdev->rfkill)
rfkill_unregister(rdev->rfkill);
rtnl_lock();
+ wiphy_lock(&rdev->wiphy);
nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY);
rdev->wiphy.registered = false;
@@ -1038,6 +1046,7 @@ void wiphy_unregister(struct wiphy *wiphy)
cfg80211_rdev_list_generation++;
device_del(&rdev->wiphy.dev);
+ wiphy_unlock(&rdev->wiphy);
rtnl_unlock();
flush_work(&rdev->scan_done_wk);
@@ -1070,6 +1079,7 @@ void cfg80211_dev_free(struct cfg80211_registered_device *rdev)
}
list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list)
cfg80211_put_bss(&rdev->wiphy, &scan->pub);
+ mutex_destroy(&rdev->wiphy.mtx);
kfree(rdev);
}
@@ -1100,6 +1110,7 @@ static void _cfg80211_unregister_wdev(struct wireless_dev *wdev,
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
flush_work(&wdev->pmsr_free_wk);
@@ -1166,7 +1177,7 @@ static const struct device_type wiphy_type = {
void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
enum nl80211_iftype iftype, int num)
{
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
rdev->num_running_ifaces += num;
if (iftype == NL80211_IFTYPE_MONITOR)
@@ -1179,7 +1190,7 @@ void __cfg80211_leave(struct cfg80211_registered_device *rdev,
struct net_device *dev = wdev->netdev;
struct cfg80211_sched_scan_request *pos, *tmp;
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
ASSERT_WDEV_LOCK(wdev);
cfg80211_pmsr_wdev_down(wdev);
@@ -1296,6 +1307,9 @@ void cfg80211_init_wdev(struct wireless_dev *wdev)
void cfg80211_register_wdev(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev)
{
+ ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
+
/*
* We get here also when the interface changes network namespaces,
* as it's registered into the new one, but we don't want it to
@@ -1375,21 +1389,30 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
cfg80211_init_wdev(wdev);
break;
case NETDEV_REGISTER:
- if (!wdev->registered)
+ if (!wdev->registered) {
+ wiphy_lock(&rdev->wiphy);
cfg80211_register_wdev(rdev, wdev);
+ wiphy_unlock(&rdev->wiphy);
+ }
break;
case NETDEV_UNREGISTER:
/*
* It is possible to get NETDEV_UNREGISTER multiple times,
* so check wdev->registered.
*/
- if (wdev->registered)
+ if (wdev->registered) {
+ wiphy_lock(&rdev->wiphy);
_cfg80211_unregister_wdev(wdev, false);
+ wiphy_unlock(&rdev->wiphy);
+ }
break;
case NETDEV_GOING_DOWN:
+ wiphy_lock(&rdev->wiphy);
cfg80211_leave(rdev, wdev);
+ wiphy_unlock(&rdev->wiphy);
break;
case NETDEV_DOWN:
+ wiphy_lock(&rdev->wiphy);
cfg80211_update_iface_num(rdev, wdev->iftype, -1);
if (rdev->scan_req && rdev->scan_req->wdev == wdev) {
if (WARN_ON(!rdev->scan_req->notified &&
@@ -1406,9 +1429,11 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
}
rdev->opencount--;
+ wiphy_unlock(&rdev->wiphy);
wake_up(&rdev->dev_wait);
break;
case NETDEV_UP:
+ wiphy_lock(&rdev->wiphy);
cfg80211_update_iface_num(rdev, wdev->iftype, 1);
wdev_lock(wdev);
switch (wdev->iftype) {
@@ -1455,6 +1480,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
/* assume this means it's off */
wdev->ps = false;
}
+ wiphy_unlock(&rdev->wiphy);
break;
case NETDEV_PRE_UP:
if (!cfg80211_iftype_allowed(wdev->wiphy, wdev->iftype,
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 7df91f940212..a7d19b4b40ac 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -231,7 +231,7 @@ static inline void wdev_unlock(struct wireless_dev *wdev)
static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
{
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
rdev->num_running_ifaces > 0;
diff --git a/net/wireless/debugfs.c b/net/wireless/debugfs.c
index 76b845f68ac8..aab43469a2f0 100644
--- a/net/wireless/debugfs.c
+++ b/net/wireless/debugfs.c
@@ -73,8 +73,6 @@ static ssize_t ht40allow_map_read(struct file *file,
if (!buf)
return -ENOMEM;
- rtnl_lock();
-
for (band = 0; band < NUM_NL80211_BANDS; band++) {
sband = wiphy->bands[band];
if (!sband)
@@ -84,8 +82,6 @@ static ssize_t ht40allow_map_read(struct file *file,
buf, buf_size, offset);
}
- rtnl_unlock();
-
r = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
kfree(buf);
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index a0621bb76d8e..8f98e546becf 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -3,6 +3,7 @@
* Some IBSS support code for cfg80211.
*
* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright (C) 2020-2021 Intel Corporation
*/
#include <linux/etherdevice.h>
@@ -92,7 +93,7 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
ASSERT_WDEV_LOCK(wdev);
if (wdev->ssid_len)
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index e1e90761dc00..3aa69b375a10 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -450,7 +450,7 @@ static void cfg80211_mgmt_registrations_update(struct wireless_dev *wdev)
struct cfg80211_mgmt_registration *reg;
struct mgmt_frame_regs upd = {};
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
spin_lock_bh(&wdev->mgmt_registrations_lock);
if (!wdev->mgmt_registrations_need_update) {
@@ -492,10 +492,10 @@ void cfg80211_mgmt_registrations_update_wk(struct work_struct *wk)
rdev = container_of(wk, struct cfg80211_registered_device,
mgmt_registrations_update_wk);
- rtnl_lock();
+ wiphy_lock(&rdev->wiphy);
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
cfg80211_mgmt_registrations_update(wdev);
- rtnl_unlock();
+ wiphy_unlock(&rdev->wiphy);
}
int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 775d0c4d86c3..e5e9d889f00f 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -64,9 +64,9 @@ static const struct genl_multicast_group nl80211_mcgrps[] = {
/* returns ERR_PTR values */
static struct wireless_dev *
-__cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
+__cfg80211_wdev_from_attrs(struct cfg80211_registered_device *rdev,
+ struct net *netns, struct nlattr **attrs)
{
- struct cfg80211_registered_device *rdev;
struct wireless_dev *result = NULL;
bool have_ifidx = attrs[NL80211_ATTR_IFINDEX];
bool have_wdev_id = attrs[NL80211_ATTR_WDEV];
@@ -74,8 +74,6 @@ __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
int wiphy_idx = -1;
int ifidx = -1;
- ASSERT_RTNL();
-
if (!have_ifidx && !have_wdev_id)
return ERR_PTR(-EINVAL);
@@ -86,6 +84,28 @@ __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs)
wiphy_idx = wdev_id >> 32;
}
+ if (rdev) {
+ struct wireless_dev *wdev;
+
+ lockdep_assert_held(&rdev->wiphy.mtx);
+
+ list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
+ if (have_ifidx && wdev->netdev &&
+ wdev->netdev->ifindex == ifidx) {
+ result = wdev;
+ break;
+ }
+ if (have_wdev_id && wdev->identifier == (u32)wdev_id) {
+ result = wdev;
+ break;
+ }
+ }
+
+ return result ?: ERR_PTR(-ENODEV);
+ }
+
+ ASSERT_RTNL();
+
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
struct wireless_dev *wdev;
@@ -914,22 +934,31 @@ int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
return err;
}
- *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk),
+ rtnl_lock();
+ *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(cb->skb->sk),
attrbuf);
kfree(attrbuf);
- if (IS_ERR(*wdev))
+ if (IS_ERR(*wdev)) {
+ rtnl_unlock();
return PTR_ERR(*wdev);
+ }
*rdev = wiphy_to_rdev((*wdev)->wiphy);
+ mutex_lock(&(*rdev)->wiphy.mtx);
+ rtnl_unlock();
/* 0 is the first index - add 1 to parse only once */
cb->args[0] = (*rdev)->wiphy_idx + 1;
cb->args[1] = (*wdev)->identifier;
} else {
/* subtract the 1 again here */
- struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
+ struct wiphy *wiphy;
struct wireless_dev *tmp;
- if (!wiphy)
+ rtnl_lock();
+ wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1);
+ if (!wiphy) {
+ rtnl_unlock();
return -ENODEV;
+ }
*rdev = wiphy_to_rdev(wiphy);
*wdev = NULL;
@@ -940,8 +969,12 @@ int nl80211_prepare_wdev_dump(struct netlink_callback *cb,
}
}
- if (!*wdev)
+ if (!*wdev) {
+ rtnl_unlock();
return -ENODEV;
+ }
+ mutex_lock(&(*rdev)->wiphy.mtx);
+ rtnl_unlock();
}
return 0;
@@ -3141,7 +3174,7 @@ static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info)
static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = NULL;
struct net_device *netdev = NULL;
struct wireless_dev *wdev;
int result = 0, rem_txq_params = 0;
@@ -3152,8 +3185,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
u8 coverage_class = 0;
u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0;
- ASSERT_RTNL();
-
+ rtnl_lock();
/*
* Try to find the wiphy and netdev. Normally this
* function shouldn't need the netdev, but this is
@@ -3177,14 +3209,19 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
if (!netdev) {
rdev = __cfg80211_rdev_from_attrs(genl_info_net(info),
info->attrs);
- if (IS_ERR(rdev))
+ if (IS_ERR(rdev)) {
+ rtnl_unlock();
return PTR_ERR(rdev);
+ }
wdev = NULL;
netdev = NULL;
result = 0;
} else
wdev = netdev->ieee80211_ptr;
+ wiphy_lock(&rdev->wiphy);
+ rtnl_unlock();
+
/*
* end workaround code, by now the rdev is available
* and locked, and wdev may or may not be NULL.
@@ -3195,24 +3232,32 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME]));
if (result)
- return result;
+ goto out;
if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) {
struct ieee80211_txq_params txq_params;
struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1];
- if (!rdev->ops->set_txq_params)
- return -EOPNOTSUPP;
+ if (!rdev->ops->set_txq_params) {
+ result = -EOPNOTSUPP;
+ goto out;
+ }
- if (!netdev)
- return -EINVAL;
+ if (!netdev) {
+ result = -EINVAL;
+ goto out;
+ }
if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP &&
- netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO)
- return -EINVAL;
+ netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) {
+ result = -EINVAL;
+ goto out;
+ }
- if (!netif_running(netdev))
- return -ENETDOWN;
+ if (!netif_running(netdev)) {
+ result = -ENETDOWN;
+ goto out;
+ }
nla_for_each_nested(nl_txq_params,
info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS],
@@ -3223,15 +3268,15 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
txq_params_policy,
info->extack);
if (result)
- return result;
+ goto out;
result = parse_txq_params(tb, &txq_params);
if (result)
- return result;
+ goto out;
result = rdev_set_txq_params(rdev, netdev,
&txq_params);
if (result)
- return result;
+ goto out;
}
}
@@ -3241,7 +3286,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
nl80211_can_set_dev_channel(wdev) ? netdev : NULL,
info);
if (result)
- return result;
+ goto out;
}
if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
@@ -3252,15 +3297,19 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
txp_wdev = NULL;
- if (!rdev->ops->set_tx_power)
- return -EOPNOTSUPP;
+ if (!rdev->ops->set_tx_power) {
+ result = -EOPNOTSUPP;
+ goto out;
+ }
idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING;
type = nla_get_u32(info->attrs[idx]);
if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] &&
- (type != NL80211_TX_POWER_AUTOMATIC))
- return -EINVAL;
+ (type != NL80211_TX_POWER_AUTOMATIC)) {
+ result = -EINVAL;
+ goto out;
+ }
if (type != NL80211_TX_POWER_AUTOMATIC) {
idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL;
@@ -3269,7 +3318,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
if (result)
- return result;
+ goto out;
}
if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] &&
@@ -3278,8 +3327,10 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
if ((!rdev->wiphy.available_antennas_tx &&
!rdev->wiphy.available_antennas_rx) ||
- !rdev->ops->set_antenna)
- return -EOPNOTSUPP;
+ !rdev->ops->set_antenna) {
+ result = -EOPNOTSUPP;
+ goto out;
+ }
tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]);
rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]);
@@ -3287,15 +3338,17 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
/* reject antenna configurations which don't match the
* available antenna masks, except for the "all" mask */
if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) ||
- (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx)))
- return -EINVAL;
+ (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) {
+ result = -EINVAL;
+ goto out;
+ }
tx_ant = tx_ant & rdev->wiphy.available_antennas_tx;
rx_ant = rx_ant & rdev->wiphy.available_antennas_rx;
result = rdev_set_antenna(rdev, tx_ant, rx_ant);
if (result)
- return result;
+ goto out;
}
changed = 0;
@@ -3317,8 +3370,10 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) {
frag_threshold = nla_get_u32(
info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]);
- if (frag_threshold < 256)
- return -EINVAL;
+ if (frag_threshold < 256) {
+ result = -EINVAL;
+ goto out;
+ }
if (frag_threshold != (u32) -1) {
/*
@@ -3339,8 +3394,10 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
}
if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) {
- if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK])
- return -EINVAL;
+ if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
+ result = -EINVAL;
+ goto out;
+ }
coverage_class = nla_get_u8(
info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]);
@@ -3348,16 +3405,20 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
}
if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) {
- if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION))
- return -EOPNOTSUPP;
+ if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) {
+ result = -EOPNOTSUPP;
+ goto out;
+ }
changed |= WIPHY_PARAM_DYN_ACK;
}
if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) {
if (!wiphy_ext_feature_isset(&rdev->wiphy,
- NL80211_EXT_FEATURE_TXQS))
- return -EOPNOTSUPP;
+ NL80211_EXT_FEATURE_TXQS)) {
+ result = -EOPNOTSUPP;
+ goto out;
+ }
txq_limit = nla_get_u32(
info->attrs[NL80211_ATTR_TXQ_LIMIT]);
changed |= WIPHY_PARAM_TXQ_LIMIT;
@@ -3365,8 +3426,10 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) {
if (!wiphy_ext_feature_isset(&rdev->wiphy,
- NL80211_EXT_FEATURE_TXQS))
- return -EOPNOTSUPP;
+ NL80211_EXT_FEATURE_TXQS)) {
+ result = -EOPNOTSUPP;
+ goto out;
+ }
txq_memory_limit = nla_get_u32(
info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]);
changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT;
@@ -3374,8 +3437,10 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) {
if (!wiphy_ext_feature_isset(&rdev->wiphy,
- NL80211_EXT_FEATURE_TXQS))
- return -EOPNOTSUPP;
+ NL80211_EXT_FEATURE_TXQS)) {
+ result = -EOPNOTSUPP;
+ goto out;
+ }
txq_quantum = nla_get_u32(
info->attrs[NL80211_ATTR_TXQ_QUANTUM]);
changed |= WIPHY_PARAM_TXQ_QUANTUM;
@@ -3387,8 +3452,10 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
u8 old_coverage_class;
u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum;
- if (!rdev->ops->set_wiphy_params)
- return -EOPNOTSUPP;
+ if (!rdev->ops->set_wiphy_params) {
+ result = -EOPNOTSUPP;
+ goto out;
+ }
old_retry_short = rdev->wiphy.retry_short;
old_retry_long = rdev->wiphy.retry_long;
@@ -3426,10 +3493,15 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
rdev->wiphy.txq_limit = old_txq_limit;
rdev->wiphy.txq_memory_limit = old_txq_memory_limit;
rdev->wiphy.txq_quantum = old_txq_quantum;
- return result;
+ goto out;
}
}
- return 0;
+
+ result = 0;
+
+out:
+ wiphy_unlock(&rdev->wiphy);
+ return result;
}
static int nl80211_send_chandef(struct sk_buff *msg,
@@ -3960,6 +4032,17 @@ static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
return -EOPNOTSUPP;
/*
+ * We hold RTNL, so this is safe, without RTNL opencount cannot
+ * reach 0, and thus the rdev cannot be deleted.
+ *
+ * We need to do it for the dev_close(), since that will call
+ * the netdev notifiers, and we need to acquire the mutex there
+ * but don't know if we get there from here or from some other
+ * place (e.g. "ip link set ... down").
+ */
+ mutex_unlock(&rdev->wiphy.mtx);
+
+ /*
* If we remove a wireless device without a netdev then clear
* user_ptr[1] so that nl80211_post_doit won't dereference it
* to check if it needs to do dev_put(). Otherwise it crashes
@@ -3968,6 +4051,10 @@ static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info)
*/
if (!wdev->netdev)
info->user_ptr[1] = NULL;
+ else
+ dev_close(wdev->netdev);
+
+ mutex_lock(&rdev->wiphy.mtx);
return rdev_del_virtual_intf(rdev, wdev);
}
@@ -5884,10 +5971,11 @@ static int nl80211_dump_station(struct sk_buff *skb,
int sta_idx = cb->args[2];
int err;
- rtnl_lock();
err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
if (err)
- goto out_err;
+ return err;
+ /* nl80211_prepare_wdev_dump acquired it in the successful case */
+ __acquire(&rdev->wiphy.mtx);
if (!wdev->netdev) {
err = -EINVAL;
@@ -5922,7 +6010,7 @@ static int nl80211_dump_station(struct sk_buff *skb,
cb->args[2] = sta_idx;
err = skb->len;
out_err:
- rtnl_unlock();
+ wiphy_unlock(&rdev->wiphy);
return err;
}
@@ -6780,10 +6868,11 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
int path_idx = cb->args[2];
int err;
- rtnl_lock();
err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
if (err)
- goto out_err;
+ return err;
+ /* nl80211_prepare_wdev_dump acquired it in the successful case */
+ __acquire(&rdev->wiphy.mtx);
if (!rdev->ops->dump_mpath) {
err = -EOPNOTSUPP;
@@ -6816,7 +6905,7 @@ static int nl80211_dump_mpath(struct sk_buff *skb,
cb->args[2] = path_idx;
err = skb->len;
out_err:
- rtnl_unlock();
+ wiphy_unlock(&rdev->wiphy);
return err;
}
@@ -6979,10 +7068,11 @@ static int nl80211_dump_mpp(struct sk_buff *skb,
int path_idx = cb->args[2];
int err;
- rtnl_lock();
err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
if (err)
- goto out_err;
+ return err;
+ /* nl80211_prepare_wdev_dump acquired it in the successful case */
+ __acquire(&rdev->wiphy.mtx);
if (!rdev->ops->dump_mpp) {
err = -EOPNOTSUPP;
@@ -7015,7 +7105,7 @@ static int nl80211_dump_mpp(struct sk_buff *skb,
cb->args[2] = path_idx;
err = skb->len;
out_err:
- rtnl_unlock();
+ wiphy_unlock(&rdev->wiphy);
return err;
}
@@ -7634,12 +7724,15 @@ static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
if (!hdr)
goto put_failure;
+ rtnl_lock();
+
if (info->attrs[NL80211_ATTR_WIPHY]) {
bool self_managed;
rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
if (IS_ERR(rdev)) {
nlmsg_free(msg);
+ rtnl_unlock();
return PTR_ERR(rdev);
}
@@ -7651,6 +7744,7 @@ static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
/* a self-managed-reg device must have a private regdom */
if (WARN_ON(!regdom && self_managed)) {
nlmsg_free(msg);
+ rtnl_unlock();
return -EINVAL;
}
@@ -7675,11 +7769,13 @@ static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info)
rcu_read_unlock();
genlmsg_end(msg, hdr);
+ rtnl_unlock();
return genlmsg_reply(msg, info);
nla_put_failure_rcu:
rcu_read_unlock();
nla_put_failure:
+ rtnl_unlock();
put_failure:
nlmsg_free(msg);
return -EMSGSIZE;
@@ -7842,12 +7938,17 @@ static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
}
- if (!reg_is_valid_request(alpha2))
- return -EINVAL;
+ rtnl_lock();
+ if (!reg_is_valid_request(alpha2)) {
+ r = -EINVAL;
+ goto out;
+ }
rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL);
- if (!rd)
- return -ENOMEM;
+ if (!rd) {
+ r = -ENOMEM;
+ goto out;
+ }
rd->n_reg_rules = num_rules;
rd->alpha2[0] = alpha2[0];
@@ -7879,10 +7980,13 @@ static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info)
}
}
+ r = set_regdom(rd, REGD_SOURCE_CRDA);
/* set_regdom takes ownership of rd */
- return set_regdom(rd, REGD_SOURCE_CRDA);
+ rd = NULL;
bad_reg:
kfree(rd);
+ out:
+ rtnl_unlock();
return r;
}
#endif /* CONFIG_CFG80211_CRDA_SUPPORT */
@@ -9050,10 +9154,7 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
struct net_device *dev = info->user_ptr[1];
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_csa_settings params;
- /* csa_attrs is defined static to avoid waste of stack size - this
- * function is called under RTNL lock, so this should not be a problem.
- */
- static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1];
+ struct nlattr **csa_attrs = NULL;
int err;
bool need_new_beacon = false;
bool need_handle_dfs_flag = true;
@@ -9118,28 +9219,39 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
if (err)
return err;
+ csa_attrs = kcalloc(NL80211_ATTR_MAX + 1, sizeof(*csa_attrs),
+ GFP_KERNEL);
+ if (!csa_attrs)
+ return -ENOMEM;
+
err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX,
info->attrs[NL80211_ATTR_CSA_IES],
nl80211_policy, info->extack);
if (err)
- return err;
+ goto free;
err = nl80211_parse_beacon(rdev, csa_attrs, &params.beacon_csa);
if (err)
- return err;
+ goto free;
- if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON])
- return -EINVAL;
+ if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) {
+ err = -EINVAL;
+ goto free;
+ }
len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
- if (!len || (len % sizeof(u16)))
- return -EINVAL;
+ if (!len || (len % sizeof(u16))) {
+ err = -EINVAL;
+ goto free;
+ }
params.n_counter_offsets_beacon = len / sizeof(u16);
if (rdev->wiphy.max_num_csa_counters &&
(params.n_counter_offsets_beacon >
- rdev->wiphy.max_num_csa_counters))
- return -EINVAL;
+ rdev->wiphy.max_num_csa_counters)) {
+ err = -EINVAL;
+ goto free;
+ }
params.counter_offsets_beacon =
nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]);
@@ -9148,23 +9260,31 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
for (i = 0; i < params.n_counter_offsets_beacon; i++) {
u16 offset = params.counter_offsets_beacon[i];
- if (offset >= params.beacon_csa.tail_len)
- return -EINVAL;
+ if (offset >= params.beacon_csa.tail_len) {
+ err = -EINVAL;
+ goto free;
+ }
- if (params.beacon_csa.tail[offset] != params.count)
- return -EINVAL;
+ if (params.beacon_csa.tail[offset] != params.count) {
+ err = -EINVAL;
+ goto free;
+ }
}
if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) {
len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
- if (!len || (len % sizeof(u16)))
- return -EINVAL;
+ if (!len || (len % sizeof(u16))) {
+ err = -EINVAL;
+ goto free;
+ }
params.n_counter_offsets_presp = len / sizeof(u16);
if (rdev->wiphy.max_num_csa_counters &&
(params.n_counter_offsets_presp >
- rdev->wiphy.max_num_csa_counters))
- return -EINVAL;
+ rdev->wiphy.max_num_csa_counters)) {
+ err = -EINVAL;
+ goto free;
+ }
params.counter_offsets_presp =
nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]);
@@ -9173,35 +9293,42 @@ static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info)
for (i = 0; i < params.n_counter_offsets_presp; i++) {
u16 offset = params.counter_offsets_presp[i];
- if (offset >= params.beacon_csa.probe_resp_len)
- return -EINVAL;
+ if (offset >= params.beacon_csa.probe_resp_len) {
+ err = -EINVAL;
+ goto free;
+ }
if (params.beacon_csa.probe_resp[offset] !=
- params.count)
- return -EINVAL;
+ params.count) {
+ err = -EINVAL;
+ goto free;
+ }
}
}
skip_beacons:
err = nl80211_parse_chandef(rdev, info, &params.chandef);
if (err)
- return err;
+ goto free;
if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &params.chandef,
- wdev->iftype))
- return -EINVAL;
+ wdev->iftype)) {
+ err = -EINVAL;
+ goto free;
+ }
err = cfg80211_chandef_dfs_required(wdev->wiphy,
&params.chandef,
wdev->iftype);
if (err < 0)
- return err;
+ goto free;
if (err > 0) {
params.radar_required = true;
if (need_handle_dfs_flag &&
!nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) {
- return -EINVAL;
+ err = -EINVAL;
+ goto free;
}
}
@@ -9212,6 +9339,8 @@ skip_beacons:
err = rdev_channel_switch(rdev, dev, &params);
wdev_unlock(wdev);
+free:
+ kfree(csa_attrs);
return err;
}
@@ -9362,12 +9491,11 @@ static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
int start = cb->args[2], idx = 0;
int err;
- rtnl_lock();
err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
- if (err) {
- rtnl_unlock();
+ if (err)
return err;
- }
+ /* nl80211_prepare_wdev_dump acquired it in the successful case */
+ __acquire(&rdev->wiphy.mtx);
wdev_lock(wdev);
spin_lock_bh(&rdev->bss_lock);
@@ -9398,7 +9526,7 @@ static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb)
wdev_unlock(wdev);
cb->args[2] = idx;
- rtnl_unlock();
+ wiphy_unlock(&rdev->wiphy);
return skb->len;
}
@@ -9496,10 +9624,13 @@ static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
if (!attrbuf)
return -ENOMEM;
- rtnl_lock();
res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev);
- if (res)
- goto out_err;
+ if (res) {
+ kfree(attrbuf);
+ return res;
+ }
+ /* nl80211_prepare_wdev_dump acquired it in the successful case */
+ __acquire(&rdev->wiphy.mtx);
/* prepare_wdev_dump parsed the attributes */
radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS];
@@ -9541,7 +9672,7 @@ static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb)
res = skb->len;
out_err:
kfree(attrbuf);
- rtnl_unlock();
+ wiphy_unlock(&rdev->wiphy);
return res;
}
@@ -10403,10 +10534,14 @@ EXPORT_SYMBOL(__cfg80211_send_event_skb);
static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
- struct wireless_dev *wdev =
- __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
+ struct wireless_dev *wdev;
int err;
+ lockdep_assert_held(&rdev->wiphy.mtx);
+
+ wdev = __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
+ info->attrs);
+
if (!rdev->ops->testmode_cmd)
return -EOPNOTSUPP;
@@ -13591,7 +13726,8 @@ static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
struct wireless_dev *wdev =
- __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs);
+ __cfg80211_wdev_from_attrs(rdev, genl_info_net(info),
+ info->attrs);
int i, err;
u32 vid, subcmd;
@@ -13715,7 +13851,7 @@ static int nl80211_prepare_vendor_dump(struct sk_buff *skb,
goto out;
}
- *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf);
+ *wdev = __cfg80211_wdev_from_attrs(NULL, sock_net(skb->sk), attrbuf);
if (IS_ERR(*wdev))
*wdev = NULL;
@@ -14650,31 +14786,24 @@ bad_tid_conf:
static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
struct genl_info *info)
{
- struct cfg80211_registered_device *rdev;
+ struct cfg80211_registered_device *rdev = NULL;
struct wireless_dev *wdev;
struct net_device *dev;
- bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL;
-
- if (rtnl)
- rtnl_lock();
+ rtnl_lock();
if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) {
rdev = cfg80211_get_dev_from_info(genl_info_net(info), info);
if (IS_ERR(rdev)) {
- if (rtnl)
- rtnl_unlock();
+ rtnl_unlock();
return PTR_ERR(rdev);
}
info->user_ptr[0] = rdev;
} else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV ||
ops->internal_flags & NL80211_FLAG_NEED_WDEV) {
- ASSERT_RTNL();
-
- wdev = __cfg80211_wdev_from_attrs(genl_info_net(info),
+ wdev = __cfg80211_wdev_from_attrs(NULL, genl_info_net(info),
info->attrs);
if (IS_ERR(wdev)) {
- if (rtnl)
- rtnl_unlock();
+ rtnl_unlock();
return PTR_ERR(wdev);
}
@@ -14683,8 +14812,7 @@ static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) {
if (!dev) {
- if (rtnl)
- rtnl_unlock();
+ rtnl_unlock();
return -EINVAL;
}
@@ -14695,8 +14823,7 @@ static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP &&
!wdev_running(wdev)) {
- if (rtnl)
- rtnl_unlock();
+ rtnl_unlock();
return -ENETDOWN;
}
@@ -14706,6 +14833,14 @@ static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
info->user_ptr[0] = rdev;
}
+ if (rdev) {
+ wiphy_lock(&rdev->wiphy);
+ /* we keep the mutex locked until post_doit */
+ __release(&rdev->wiphy.mtx);
+ }
+ if (!(ops->internal_flags & NL80211_FLAG_NEED_RTNL))
+ rtnl_unlock();
+
return 0;
}
@@ -14723,6 +14858,14 @@ static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
}
}
+ if (info->user_ptr[0]) {
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+
+ /* we kept the mutex locked since pre_doit */
+ __acquire(&rdev->wiphy.mtx);
+ wiphy_unlock(&rdev->wiphy);
+ }
+
if (ops->internal_flags & NL80211_FLAG_NEED_RTNL)
rtnl_unlock();
@@ -14851,8 +14994,7 @@ static const struct genl_ops nl80211_ops[] = {
.dumpit = nl80211_dump_wiphy,
.done = nl80211_dump_wiphy_done,
/* can be retrieved by unprivileged users */
- .internal_flags = NL80211_FLAG_NEED_WIPHY |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY,
},
};
@@ -14862,7 +15004,6 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_wiphy,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_RTNL,
},
{
.cmd = NL80211_CMD_GET_INTERFACE,
@@ -14870,8 +15011,7 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.doit = nl80211_get_interface,
.dumpit = nl80211_dump_interface,
/* can be retrieved by unprivileged users */
- .internal_flags = NL80211_FLAG_NEED_WDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV,
},
{
.cmd = NL80211_CMD_SET_INTERFACE,
@@ -14902,8 +15042,7 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_key,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_SET_KEY,
@@ -14911,7 +15050,6 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.doit = nl80211_set_key,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL |
NL80211_FLAG_CLEAR_SKB,
},
{
@@ -14920,7 +15058,6 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.doit = nl80211_new_key,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL |
NL80211_FLAG_CLEAR_SKB,
},
{
@@ -14928,64 +15065,56 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_del_key,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_SET_BEACON,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.flags = GENL_UNS_ADMIN_PERM,
.doit = nl80211_set_beacon,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_START_AP,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.flags = GENL_UNS_ADMIN_PERM,
.doit = nl80211_start_ap,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_STOP_AP,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.flags = GENL_UNS_ADMIN_PERM,
.doit = nl80211_stop_ap,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_GET_STATION,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_station,
.dumpit = nl80211_dump_station,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_SET_STATION,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_station,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_NEW_STATION,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_new_station,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_DEL_STATION,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_del_station,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_GET_MPATH,
@@ -14993,8 +15122,7 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.doit = nl80211_get_mpath,
.dumpit = nl80211_dump_mpath,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_GET_MPP,
@@ -15002,47 +15130,42 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.doit = nl80211_get_mpp,
.dumpit = nl80211_dump_mpp,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_SET_MPATH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_mpath,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_NEW_MPATH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_new_mpath,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_DEL_MPATH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_del_mpath,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_SET_BSS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_bss,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_GET_REG,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_reg_do,
.dumpit = nl80211_get_reg_dump,
- .internal_flags = NL80211_FLAG_NEED_RTNL,
+ .internal_flags = 0,
/* can be retrieved by unprivileged users */
},
#ifdef CONFIG_CFG80211_CRDA_SUPPORT
@@ -15051,7 +15174,7 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_reg,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_RTNL,
+ .internal_flags = 0,
},
#endif
{
@@ -15071,32 +15194,28 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_mesh_config,
/* can be retrieved by unprivileged users */
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_SET_MESH_CONFIG,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_update_mesh_config,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_TRIGGER_SCAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_trigger_scan,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
},
{
.cmd = NL80211_CMD_ABORT_SCAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_abort_scan,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
},
{
.cmd = NL80211_CMD_GET_SCAN,
@@ -15108,16 +15227,14 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_start_sched_scan,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_STOP_SCHED_SCAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_stop_sched_scan,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_AUTHENTICATE,
@@ -15125,7 +15242,7 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.doit = nl80211_authenticate,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL |
+ 0 |
NL80211_FLAG_CLEAR_SKB,
},
{
@@ -15134,7 +15251,7 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.doit = nl80211_associate,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL |
+ 0 |
NL80211_FLAG_CLEAR_SKB,
},
{
@@ -15142,32 +15259,28 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_deauthenticate,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_DISASSOCIATE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_disassociate,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_JOIN_IBSS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_join_ibss,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_LEAVE_IBSS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_leave_ibss,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
#ifdef CONFIG_NL80211_TESTMODE
{
@@ -15176,8 +15289,7 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.doit = nl80211_testmode_do,
.dumpit = nl80211_testmode_dump,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WIPHY |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY,
},
#endif
{
@@ -15186,7 +15298,7 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.doit = nl80211_connect,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL |
+ 0 |
NL80211_FLAG_CLEAR_SKB,
},
{
@@ -15195,7 +15307,7 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.doit = nl80211_update_connect_params,
.flags = GENL_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL |
+ 0 |
NL80211_FLAG_CLEAR_SKB,
},
{
@@ -15203,16 +15315,14 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_disconnect,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_SET_WIPHY_NETNS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_wiphy_netns,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WIPHY |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY,
},
{
.cmd = NL80211_CMD_GET_SURVEY,
@@ -15225,7 +15335,7 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.doit = nl80211_setdel_pmksa,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL |
+ 0 |
NL80211_FLAG_CLEAR_SKB,
},
{
@@ -15233,128 +15343,112 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_setdel_pmksa,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_FLUSH_PMKSA,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_flush_pmksa,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_REMAIN_ON_CHANNEL,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_remain_on_channel,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
},
{
.cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_cancel_remain_on_channel,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
},
{
.cmd = NL80211_CMD_SET_TX_BITRATE_MASK,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_tx_bitrate_mask,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_REGISTER_FRAME,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_register_mgmt,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV,
},
{
.cmd = NL80211_CMD_FRAME,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tx_mgmt,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
},
{
.cmd = NL80211_CMD_FRAME_WAIT_CANCEL,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tx_mgmt_cancel_wait,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
},
{
.cmd = NL80211_CMD_SET_POWER_SAVE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_power_save,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_GET_POWER_SAVE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_power_save,
/* can be retrieved by unprivileged users */
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_SET_CQM,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_cqm,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_SET_CHANNEL,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_channel,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_JOIN_MESH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_join_mesh,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_LEAVE_MESH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_leave_mesh,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_JOIN_OCB,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_join_ocb,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_LEAVE_OCB,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_leave_ocb,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
#ifdef CONFIG_PM
{
@@ -15362,16 +15456,14 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_wowlan,
/* can be retrieved by unprivileged users */
- .internal_flags = NL80211_FLAG_NEED_WIPHY |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY,
},
{
.cmd = NL80211_CMD_SET_WOWLAN,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_wowlan,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WIPHY |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY,
},
#endif
{
@@ -15380,7 +15472,7 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.doit = nl80211_set_rekey_data,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL |
+ 0 |
NL80211_FLAG_CLEAR_SKB,
},
{
@@ -15388,48 +15480,42 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tdls_mgmt,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_TDLS_OPER,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tdls_oper,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_UNEXPECTED_FRAME,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_register_unexpected_frame,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_PROBE_CLIENT,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_probe_client,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_REGISTER_BEACONS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_register_beacons,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WIPHY |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY,
},
{
.cmd = NL80211_CMD_SET_NOACK_MAP,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_noack_map,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_START_P2P_DEVICE,
@@ -15468,48 +15554,42 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_nan_add_func,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
},
{
.cmd = NL80211_CMD_DEL_NAN_FUNCTION,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_nan_del_func,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
},
{
.cmd = NL80211_CMD_CHANGE_NAN_CONFIG,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_nan_change_config,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
},
{
.cmd = NL80211_CMD_SET_MCAST_RATE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_mcast_rate,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_SET_MAC_ACL,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_mac_acl,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_RADAR_DETECT,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_start_radar_detection,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_GET_PROTOCOL_FEATURES,
@@ -15521,47 +15601,41 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_update_ft_ies,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_CRIT_PROTOCOL_START,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_crit_protocol_start,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
},
{
.cmd = NL80211_CMD_CRIT_PROTOCOL_STOP,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_crit_protocol_stop,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
},
{
.cmd = NL80211_CMD_GET_COALESCE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_coalesce,
- .internal_flags = NL80211_FLAG_NEED_WIPHY |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY,
},
{
.cmd = NL80211_CMD_SET_COALESCE,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_coalesce,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WIPHY |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WIPHY,
},
{
.cmd = NL80211_CMD_CHANNEL_SWITCH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_channel_switch,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_VENDOR,
@@ -15570,7 +15644,7 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.dumpit = nl80211_vendor_cmd_dump,
.flags = GENL_UNS_ADMIN_PERM,
.internal_flags = NL80211_FLAG_NEED_WIPHY |
- NL80211_FLAG_NEED_RTNL |
+ 0 |
NL80211_FLAG_CLEAR_SKB,
},
{
@@ -15578,123 +15652,108 @@ static const struct genl_small_ops nl80211_small_ops[] = {
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_qos_map,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_ADD_TX_TS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_add_tx_ts,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_DEL_TX_TS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_del_tx_ts,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tdls_channel_switch,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tdls_cancel_channel_switch,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_multicast_to_unicast,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_SET_PMK,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_set_pmk,
.internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL |
+ 0 |
NL80211_FLAG_CLEAR_SKB,
},
{
.cmd = NL80211_CMD_DEL_PMK,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_del_pmk,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_EXTERNAL_AUTH,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_external_auth,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_CONTROL_PORT_FRAME,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_tx_control_port,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_get_ftm_responder_stats,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_PEER_MEASUREMENT_START,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_pmsr_start,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_WDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_WDEV_UP,
},
{
.cmd = NL80211_CMD_NOTIFY_RADAR,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.doit = nl80211_notify_radar_detection,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_UPDATE_OWE_INFO,
.doit = nl80211_update_owe_info,
.flags = GENL_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_PROBE_MESH_LINK,
.doit = nl80211_probe_mesh_link,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV_UP |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV_UP,
},
{
.cmd = NL80211_CMD_SET_TID_CONFIG,
.doit = nl80211_set_tid_config,
.flags = GENL_UNS_ADMIN_PERM,
- .internal_flags = NL80211_FLAG_NEED_NETDEV |
- NL80211_FLAG_NEED_RTNL,
+ .internal_flags = NL80211_FLAG_NEED_NETDEV,
},
{
.cmd = NL80211_CMD_SET_SAR_SPECS,
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 8114bba8556c..452b698f42be 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -142,12 +142,15 @@ static const struct ieee80211_regdomain *get_cfg80211_regdom(void)
/*
* Returns the regulatory domain associated with the wiphy.
*
- * Requires either RTNL or RCU protection
+ * Requires any of RTNL, wiphy mutex or RCU protection.
*/
const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy)
{
- return rcu_dereference_rtnl(wiphy->regd);
+ return rcu_dereference_check(wiphy->regd,
+ lockdep_is_held(&wiphy->mtx) ||
+ lockdep_rtnl_is_held());
}
+EXPORT_SYMBOL(get_wiphy_regdom);
static const char *reg_dfs_region_str(enum nl80211_dfs_regions dfs_region)
{
@@ -169,7 +172,9 @@ enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy)
const struct ieee80211_regdomain *regd = NULL;
const struct ieee80211_regdomain *wiphy_regd = NULL;
+ rcu_read_lock();
regd = get_cfg80211_regdom();
+
if (!wiphy)
goto out;
@@ -186,6 +191,8 @@ enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy)
reg_dfs_region_str(regd->dfs_region));
out:
+ rcu_read_unlock();
+
return regd->dfs_region;
}
@@ -2577,11 +2584,13 @@ void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
return;
rtnl_lock();
+ wiphy_lock(wiphy);
tmp = get_wiphy_regdom(wiphy);
rcu_assign_pointer(wiphy->regd, new_regd);
rcu_free_regdom(tmp);
+ wiphy_unlock(wiphy);
rtnl_unlock();
}
EXPORT_SYMBOL(wiphy_apply_custom_regulatory);
@@ -2744,7 +2753,10 @@ reg_process_hint_driver(struct wiphy *wiphy,
return REG_REQ_IGNORE;
tmp = get_wiphy_regdom(wiphy);
+ ASSERT_RTNL();
+ wiphy_lock(wiphy);
rcu_assign_pointer(wiphy->regd, regd);
+ wiphy_unlock(wiphy);
rcu_free_regdom(tmp);
}
@@ -3076,41 +3088,52 @@ static void reg_process_pending_beacon_hints(void)
spin_unlock_bh(&reg_pending_beacons_lock);
}
-static void reg_process_self_managed_hints(void)
+static void reg_process_self_managed_hint(struct wiphy *wiphy)
{
- struct cfg80211_registered_device *rdev;
- struct wiphy *wiphy;
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
const struct ieee80211_regdomain *tmp;
const struct ieee80211_regdomain *regd;
enum nl80211_band band;
struct regulatory_request request = {};
- list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
- wiphy = &rdev->wiphy;
+ ASSERT_RTNL();
+ lockdep_assert_wiphy(wiphy);
- spin_lock(&reg_requests_lock);
- regd = rdev->requested_regd;
- rdev->requested_regd = NULL;
- spin_unlock(&reg_requests_lock);
+ spin_lock(&reg_requests_lock);
+ regd = rdev->requested_regd;
+ rdev->requested_regd = NULL;
+ spin_unlock(&reg_requests_lock);
- if (regd == NULL)
- continue;
+ if (!regd)
+ return;
- tmp = get_wiphy_regdom(wiphy);
- rcu_assign_pointer(wiphy->regd, regd);
- rcu_free_regdom(tmp);
+ tmp = get_wiphy_regdom(wiphy);
+ rcu_assign_pointer(wiphy->regd, regd);
+ rcu_free_regdom(tmp);
+
+ for (band = 0; band < NUM_NL80211_BANDS; band++)
+ handle_band_custom(wiphy, wiphy->bands[band], regd);
- for (band = 0; band < NUM_NL80211_BANDS; band++)
- handle_band_custom(wiphy, wiphy->bands[band], regd);
+ reg_process_ht_flags(wiphy);
- reg_process_ht_flags(wiphy);
+ request.wiphy_idx = get_wiphy_idx(wiphy);
+ request.alpha2[0] = regd->alpha2[0];
+ request.alpha2[1] = regd->alpha2[1];
+ request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
- request.wiphy_idx = get_wiphy_idx(wiphy);
- request.alpha2[0] = regd->alpha2[0];
- request.alpha2[1] = regd->alpha2[1];
- request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
+ nl80211_send_wiphy_reg_change_event(&request);
+}
- nl80211_send_wiphy_reg_change_event(&request);
+static void reg_process_self_managed_hints(void)
+{
+ struct cfg80211_registered_device *rdev;
+
+ ASSERT_RTNL();
+
+ list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+ wiphy_lock(&rdev->wiphy);
+ reg_process_self_managed_hint(&rdev->wiphy);
+ wiphy_unlock(&rdev->wiphy);
}
reg_check_channels();
@@ -3789,14 +3812,21 @@ static int reg_set_rd_driver(const struct ieee80211_regdomain *rd,
return -ENODEV;
if (!driver_request->intersect) {
- if (request_wiphy->regd)
+ ASSERT_RTNL();
+ wiphy_lock(request_wiphy);
+ if (request_wiphy->regd) {
+ wiphy_unlock(request_wiphy);
return -EALREADY;
+ }
regd = reg_copy_regd(rd);
- if (IS_ERR(regd))
+ if (IS_ERR(regd)) {
+ wiphy_unlock(request_wiphy);
return PTR_ERR(regd);
+ }
rcu_assign_pointer(request_wiphy->regd, regd);
+ wiphy_unlock(request_wiphy);
reset_regdomains(false, rd);
return 0;
}
@@ -3978,8 +4008,8 @@ int regulatory_set_wiphy_regd(struct wiphy *wiphy,
}
EXPORT_SYMBOL(regulatory_set_wiphy_regd);
-int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
- struct ieee80211_regdomain *rd)
+int regulatory_set_wiphy_regd_sync(struct wiphy *wiphy,
+ struct ieee80211_regdomain *rd)
{
int ret;
@@ -3990,10 +4020,11 @@ int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
return ret;
/* process the request immediately */
- reg_process_self_managed_hints();
+ reg_process_self_managed_hint(wiphy);
+ reg_check_channels();
return 0;
}
-EXPORT_SYMBOL(regulatory_set_wiphy_regd_sync_rtnl);
+EXPORT_SYMBOL(regulatory_set_wiphy_regd_sync);
void wiphy_regulatory_register(struct wiphy *wiphy)
{
diff --git a/net/wireless/reg.h b/net/wireless/reg.h
index f9e83031a40a..f3707f729024 100644
--- a/net/wireless/reg.h
+++ b/net/wireless/reg.h
@@ -63,7 +63,6 @@ unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd,
const struct ieee80211_reg_rule *rule);
bool reg_last_request_cell_base(void);
-const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy);
/**
* regulatory_hint_found_beacon - hints a beacon was found on a channel
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 1b7fec3b53cd..019952d4fc7d 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -918,7 +918,7 @@ void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
union iwreq_data wrqu;
#endif
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
if (rdev->scan_msg) {
nl80211_send_scan_msg(rdev, rdev->scan_msg);
@@ -987,9 +987,9 @@ void __cfg80211_scan_done(struct work_struct *wk)
rdev = container_of(wk, struct cfg80211_registered_device,
scan_done_wk);
- rtnl_lock();
+ wiphy_lock(&rdev->wiphy);
___cfg80211_scan_done(rdev, true);
- rtnl_unlock();
+ wiphy_unlock(&rdev->wiphy);
}
void cfg80211_scan_done(struct cfg80211_scan_request *request,
@@ -1022,7 +1022,7 @@ EXPORT_SYMBOL(cfg80211_scan_done);
void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev,
struct cfg80211_sched_scan_request *req)
{
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
list_add_rcu(&req->list, &rdev->sched_scan_req_list);
}
@@ -1030,7 +1030,7 @@ void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev,
static void cfg80211_del_sched_scan_req(struct cfg80211_registered_device *rdev,
struct cfg80211_sched_scan_request *req)
{
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
list_del_rcu(&req->list);
kfree_rcu(req, rcu_head);
@@ -1042,7 +1042,7 @@ cfg80211_find_sched_scan_req(struct cfg80211_registered_device *rdev, u64 reqid)
struct cfg80211_sched_scan_request *pos;
list_for_each_entry_rcu(pos, &rdev->sched_scan_req_list, list,
- lockdep_rtnl_is_held()) {
+ lockdep_is_held(&rdev->wiphy.mtx)) {
if (pos->reqid == reqid)
return pos;
}
@@ -1090,7 +1090,7 @@ void cfg80211_sched_scan_results_wk(struct work_struct *work)
rdev = container_of(work, struct cfg80211_registered_device,
sched_scan_res_wk);
- rtnl_lock();
+ wiphy_lock(&rdev->wiphy);
list_for_each_entry_safe(req, tmp, &rdev->sched_scan_req_list, list) {
if (req->report_results) {
req->report_results = false;
@@ -1105,7 +1105,7 @@ void cfg80211_sched_scan_results_wk(struct work_struct *work)
NL80211_CMD_SCHED_SCAN_RESULTS);
}
}
- rtnl_unlock();
+ wiphy_unlock(&rdev->wiphy);
}
void cfg80211_sched_scan_results(struct wiphy *wiphy, u64 reqid)
@@ -1126,23 +1126,23 @@ void cfg80211_sched_scan_results(struct wiphy *wiphy, u64 reqid)
}
EXPORT_SYMBOL(cfg80211_sched_scan_results);
-void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy, u64 reqid)
+void cfg80211_sched_scan_stopped_locked(struct wiphy *wiphy, u64 reqid)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
- ASSERT_RTNL();
+ lockdep_assert_held(&wiphy->mtx);
trace_cfg80211_sched_scan_stopped(wiphy, reqid);
__cfg80211_stop_sched_scan(rdev, reqid, true);
}
-EXPORT_SYMBOL(cfg80211_sched_scan_stopped_rtnl);
+EXPORT_SYMBOL(cfg80211_sched_scan_stopped_locked);
void cfg80211_sched_scan_stopped(struct wiphy *wiphy, u64 reqid)
{
- rtnl_lock();
- cfg80211_sched_scan_stopped_rtnl(wiphy, reqid);
- rtnl_unlock();
+ wiphy_lock(wiphy);
+ cfg80211_sched_scan_stopped_locked(wiphy, reqid);
+ wiphy_unlock(wiphy);
}
EXPORT_SYMBOL(cfg80211_sched_scan_stopped);
@@ -1150,7 +1150,7 @@ int cfg80211_stop_sched_scan_req(struct cfg80211_registered_device *rdev,
struct cfg80211_sched_scan_request *req,
bool driver_initiated)
{
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
if (!driver_initiated) {
int err = rdev_sched_scan_stop(rdev, req->dev, req->reqid);
@@ -1170,7 +1170,7 @@ int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
{
struct cfg80211_sched_scan_request *sched_scan_req;
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
sched_scan_req = cfg80211_find_sched_scan_req(rdev, reqid);
if (!sched_scan_req)
@@ -2774,6 +2774,8 @@ int cfg80211_wext_siwscan(struct net_device *dev,
eth_broadcast_addr(creq->bssid);
+ wiphy_lock(&rdev->wiphy);
+
rdev->scan_req = creq;
err = rdev_scan(rdev, creq);
if (err) {
@@ -2785,6 +2787,7 @@ int cfg80211_wext_siwscan(struct net_device *dev,
creq = NULL;
dev_hold(dev);
}
+ wiphy_unlock(&rdev->wiphy);
out:
kfree(creq);
return err;
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index 38df713f2e2e..07756ca5e3b5 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -67,7 +67,6 @@ static int cfg80211_conn_scan(struct wireless_dev *wdev)
struct cfg80211_scan_request *request;
int n_channels, err;
- ASSERT_RTNL();
ASSERT_WDEV_LOCK(wdev);
if (rdev->scan_req || rdev->scan_msg)
@@ -233,7 +232,7 @@ void cfg80211_conn_work(struct work_struct *work)
u8 bssid_buf[ETH_ALEN], *bssid = NULL;
enum nl80211_timeout_reason treason;
- rtnl_lock();
+ wiphy_lock(&rdev->wiphy);
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
if (!wdev->netdev)
@@ -266,7 +265,7 @@ void cfg80211_conn_work(struct work_struct *work)
wdev_unlock(wdev);
}
- rtnl_unlock();
+ wiphy_unlock(&rdev->wiphy);
}
/* Returned bss is reference counted and must be cleaned up appropriately. */
diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c
index 3ac1f48195d2..043762354a66 100644
--- a/net/wireless/sysfs.c
+++ b/net/wireless/sysfs.c
@@ -5,6 +5,7 @@
*
* Copyright 2005-2006 Jiri Benc <jbenc@suse.cz>
* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright (C) 2020-2021 Intel Corporation
*/
#include <linux/device.h>
@@ -104,6 +105,7 @@ static int wiphy_suspend(struct device *dev)
rdev->suspend_at = ktime_get_boottime_seconds();
rtnl_lock();
+ wiphy_lock(&rdev->wiphy);
if (rdev->wiphy.registered) {
if (!rdev->wiphy.wowlan_config) {
cfg80211_leave_all(rdev);
@@ -118,6 +120,7 @@ static int wiphy_suspend(struct device *dev)
ret = rdev_suspend(rdev, NULL);
}
}
+ wiphy_unlock(&rdev->wiphy);
rtnl_unlock();
return ret;
@@ -132,8 +135,10 @@ static int wiphy_resume(struct device *dev)
cfg80211_bss_age(rdev, ktime_get_boottime_seconds() - rdev->suspend_at);
rtnl_lock();
+ wiphy_lock(&rdev->wiphy);
if (rdev->wiphy.registered && rdev->ops->resume)
ret = rdev_resume(rdev);
+ wiphy_unlock(&rdev->wiphy);
rtnl_unlock();
return ret;
diff --git a/net/wireless/util.c b/net/wireless/util.c
index eab928002cd8..1bf0200f562a 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -997,7 +997,7 @@ void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev)
{
struct wireless_dev *wdev;
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
cfg80211_process_wdev_events(wdev);
@@ -1010,7 +1010,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
int err;
enum nl80211_iftype otype = dev->ieee80211_ptr->iftype;
- ASSERT_RTNL();
+ lockdep_assert_held(&rdev->wiphy.mtx);
/* don't support changing VLANs, you just re-create them */
if (otype == NL80211_IFTYPE_AP_VLAN)
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index fd9ad74972fb..2e35cb78221e 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -7,7 +7,7 @@
* we directly assign the wireless handlers of wireless interfaces.
*
* Copyright 2008-2009 Johannes Berg <johannes@sipsolutions.net>
- * Copyright (C) 2019 Intel Corporation
+ * Copyright (C) 2019-2021 Intel Corporation
*/
#include <linux/export.h>
@@ -253,17 +253,23 @@ int cfg80211_wext_siwrts(struct net_device *dev,
u32 orts = wdev->wiphy->rts_threshold;
int err;
- if (rts->disabled || !rts->fixed)
+ wiphy_lock(&rdev->wiphy);
+ if (rts->disabled || !rts->fixed) {
wdev->wiphy->rts_threshold = (u32) -1;
- else if (rts->value < 0)
- return -EINVAL;
- else
+ } else if (rts->value < 0) {
+ err = -EINVAL;
+ goto out;
+ } else {
wdev->wiphy->rts_threshold = rts->value;
+ }
err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
+
if (err)
wdev->wiphy->rts_threshold = orts;
+out:
+ wiphy_unlock(&rdev->wiphy);
return err;
}
EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
@@ -291,11 +297,13 @@ int cfg80211_wext_siwfrag(struct net_device *dev,
u32 ofrag = wdev->wiphy->frag_threshold;
int err;
- if (frag->disabled || !frag->fixed)
+ wiphy_lock(&rdev->wiphy);
+ if (frag->disabled || !frag->fixed) {
wdev->wiphy->frag_threshold = (u32) -1;
- else if (frag->value < 256)
- return -EINVAL;
- else {
+ } else if (frag->value < 256) {
+ err = -EINVAL;
+ goto out;
+ } else {
/* Fragment length must be even, so strip LSB. */
wdev->wiphy->frag_threshold = frag->value & ~0x1;
}
@@ -303,6 +311,8 @@ int cfg80211_wext_siwfrag(struct net_device *dev,
err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
if (err)
wdev->wiphy->frag_threshold = ofrag;
+out:
+ wiphy_unlock(&rdev->wiphy);
return err;
}
@@ -337,6 +347,7 @@ static int cfg80211_wext_siwretry(struct net_device *dev,
(retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
return -EINVAL;
+ wiphy_lock(&rdev->wiphy);
if (retry->flags & IW_RETRY_LONG) {
wdev->wiphy->retry_long = retry->value;
changed |= WIPHY_PARAM_RETRY_LONG;
@@ -355,6 +366,7 @@ static int cfg80211_wext_siwretry(struct net_device *dev,
wdev->wiphy->retry_short = oshort;
wdev->wiphy->retry_long = olong;
}
+ wiphy_unlock(&rdev->wiphy);
return err;
}
@@ -577,15 +589,18 @@ static int cfg80211_wext_siwencode(struct net_device *dev,
!rdev->ops->set_default_key)
return -EOPNOTSUPP;
+ wiphy_lock(&rdev->wiphy);
idx = erq->flags & IW_ENCODE_INDEX;
if (idx == 0) {
idx = wdev->wext.default_key;
if (idx < 0)
idx = 0;
- } else if (idx < 1 || idx > 4)
- return -EINVAL;
- else
+ } else if (idx < 1 || idx > 4) {
+ err = -EINVAL;
+ goto out;
+ } else {
idx--;
+ }
if (erq->flags & IW_ENCODE_DISABLED)
remove = true;
@@ -599,22 +614,28 @@ static int cfg80211_wext_siwencode(struct net_device *dev,
if (!err)
wdev->wext.default_key = idx;
wdev_unlock(wdev);
- return err;
+ goto out;
}
memset(&params, 0, sizeof(params));
params.key = keybuf;
params.key_len = erq->length;
- if (erq->length == 5)
+ if (erq->length == 5) {
params.cipher = WLAN_CIPHER_SUITE_WEP40;
- else if (erq->length == 13)
+ } else if (erq->length == 13) {
params.cipher = WLAN_CIPHER_SUITE_WEP104;
- else if (!remove)
- return -EINVAL;
+ } else if (!remove) {
+ err = -EINVAL;
+ goto out;
+ }
+
+ err = cfg80211_set_encryption(rdev, dev, false, NULL, remove,
+ wdev->wext.default_key == -1,
+ idx, &params);
+out:
+ wiphy_unlock(&rdev->wiphy);
- return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
- wdev->wext.default_key == -1,
- idx, &params);
+ return err;
}
static int cfg80211_wext_siwencodeext(struct net_device *dev,
@@ -754,38 +775,61 @@ static int cfg80211_wext_siwfreq(struct net_device *dev,
struct cfg80211_chan_def chandef = {
.width = NL80211_CHAN_WIDTH_20_NOHT,
};
- int freq;
+ int freq, ret;
+
+ wiphy_lock(&rdev->wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_STATION:
- return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
+ ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
+ break;
case NL80211_IFTYPE_ADHOC:
- return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
+ ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
+ break;
case NL80211_IFTYPE_MONITOR:
freq = cfg80211_wext_freq(wextfreq);
- if (freq < 0)
- return freq;
- if (freq == 0)
- return -EINVAL;
+ if (freq < 0) {
+ ret = freq;
+ break;
+ }
+ if (freq == 0) {
+ ret = -EINVAL;
+ break;
+ }
chandef.center_freq1 = freq;
chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
- if (!chandef.chan)
- return -EINVAL;
- return cfg80211_set_monitor_channel(rdev, &chandef);
+ if (!chandef.chan) {
+ ret = -EINVAL;
+ break;
+ }
+ ret = cfg80211_set_monitor_channel(rdev, &chandef);
+ break;
case NL80211_IFTYPE_MESH_POINT:
freq = cfg80211_wext_freq(wextfreq);
- if (freq < 0)
- return freq;
- if (freq == 0)
- return -EINVAL;
+ if (freq < 0) {
+ ret = freq;
+ break;
+ }
+ if (freq == 0) {
+ ret = -EINVAL;
+ break;
+ }
chandef.center_freq1 = freq;
chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
- if (!chandef.chan)
- return -EINVAL;
- return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
+ if (!chandef.chan) {
+ ret = -EINVAL;
+ break;
+ }
+ ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
+ break;
default:
- return -EOPNOTSUPP;
+ ret = -EOPNOTSUPP;
+ break;
}
+
+ wiphy_unlock(&rdev->wiphy);
+
+ return ret;
}
static int cfg80211_wext_giwfreq(struct net_device *dev,
@@ -797,24 +841,35 @@ static int cfg80211_wext_giwfreq(struct net_device *dev,
struct cfg80211_chan_def chandef = {};
int ret;
+ wiphy_lock(&rdev->wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_STATION:
- return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
+ ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
+ break;
case NL80211_IFTYPE_ADHOC:
- return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
+ ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
+ break;
case NL80211_IFTYPE_MONITOR:
- if (!rdev->ops->get_channel)
- return -EINVAL;
+ if (!rdev->ops->get_channel) {
+ ret = -EINVAL;
+ break;
+ }
ret = rdev_get_channel(rdev, wdev, &chandef);
if (ret)
- return ret;
+ break;
freq->m = chandef.chan->center_freq;
freq->e = 6;
- return 0;
+ ret = 0;
+ break;
default:
- return -EINVAL;
+ ret = -EINVAL;
+ break;
}
+
+ wiphy_unlock(&rdev->wiphy);
+
+ return ret;
}
static int cfg80211_wext_siwtxpower(struct net_device *dev,
@@ -825,6 +880,7 @@ static int cfg80211_wext_siwtxpower(struct net_device *dev,
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
enum nl80211_tx_power_setting type;
int dbm = 0;
+ int ret;
if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
return -EINVAL;
@@ -866,7 +922,11 @@ static int cfg80211_wext_siwtxpower(struct net_device *dev,
return 0;
}
- return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
+ wiphy_lock(&rdev->wiphy);
+ ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
+ wiphy_unlock(&rdev->wiphy);
+
+ return ret;
}
static int cfg80211_wext_giwtxpower(struct net_device *dev,
@@ -885,7 +945,9 @@ static int cfg80211_wext_giwtxpower(struct net_device *dev,
if (!rdev->ops->get_tx_power)
return -EOPNOTSUPP;
+ wiphy_lock(&rdev->wiphy);
err = rdev_get_tx_power(rdev, wdev, &val);
+ wiphy_unlock(&rdev->wiphy);
if (err)
return err;
@@ -1125,7 +1187,9 @@ static int cfg80211_wext_siwpower(struct net_device *dev,
timeout = wrq->value / 1000;
}
+ wiphy_lock(&rdev->wiphy);
err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
+ wiphy_unlock(&rdev->wiphy);
if (err)
return err;
@@ -1156,7 +1220,7 @@ static int cfg80211_wext_siwrate(struct net_device *dev,
struct cfg80211_bitrate_mask mask;
u32 fixed, maxrate;
struct ieee80211_supported_band *sband;
- int band, ridx;
+ int band, ridx, ret;
bool match = false;
if (!rdev->ops->set_bitrate_mask)
@@ -1195,7 +1259,11 @@ static int cfg80211_wext_siwrate(struct net_device *dev,
if (!match)
return -EINVAL;
- return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
+ wiphy_lock(&rdev->wiphy);
+ ret = rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
+ wiphy_unlock(&rdev->wiphy);
+
+ return ret;
}
static int cfg80211_wext_giwrate(struct net_device *dev,
@@ -1224,7 +1292,9 @@ static int cfg80211_wext_giwrate(struct net_device *dev,
if (err)
return err;
+ wiphy_lock(&rdev->wiphy);
err = rdev_get_station(rdev, dev, addr, &sinfo);
+ wiphy_unlock(&rdev->wiphy);
if (err)
return err;
@@ -1249,6 +1319,7 @@ static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
static struct iw_statistics wstats;
static struct station_info sinfo = {};
u8 bssid[ETH_ALEN];
+ int ret;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
return NULL;
@@ -1267,7 +1338,11 @@ static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
memset(&sinfo, 0, sizeof(sinfo));
- if (rdev_get_station(rdev, dev, bssid, &sinfo))
+ wiphy_lock(&rdev->wiphy);
+ ret = rdev_get_station(rdev, dev, bssid, &sinfo);
+ wiphy_unlock(&rdev->wiphy);
+
+ if (ret)
return NULL;
memset(&wstats, 0, sizeof(wstats));
@@ -1318,15 +1393,24 @@ static int cfg80211_wext_siwap(struct net_device *dev,
struct sockaddr *ap_addr, char *extra)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+ int ret;
+ wiphy_lock(&rdev->wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_ADHOC:
- return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
+ ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
+ break;
case NL80211_IFTYPE_STATION:
- return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
+ ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
+ break;
default:
- return -EOPNOTSUPP;
+ ret = -EOPNOTSUPP;
+ break;
}
+ wiphy_unlock(&rdev->wiphy);
+
+ return ret;
}
static int cfg80211_wext_giwap(struct net_device *dev,
@@ -1334,15 +1418,24 @@ static int cfg80211_wext_giwap(struct net_device *dev,
struct sockaddr *ap_addr, char *extra)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+ int ret;
+ wiphy_lock(&rdev->wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_ADHOC:
- return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
+ ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
+ break;
case NL80211_IFTYPE_STATION:
- return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
+ ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
+ break;
default:
- return -EOPNOTSUPP;
+ ret = -EOPNOTSUPP;
+ break;
}
+ wiphy_unlock(&rdev->wiphy);
+
+ return ret;
}
static int cfg80211_wext_siwessid(struct net_device *dev,
@@ -1350,15 +1443,24 @@ static int cfg80211_wext_siwessid(struct net_device *dev,
struct iw_point *data, char *ssid)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+ int ret;
+ wiphy_lock(&rdev->wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_ADHOC:
- return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
+ ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
+ break;
case NL80211_IFTYPE_STATION:
- return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
+ ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
+ break;
default:
- return -EOPNOTSUPP;
+ ret = -EOPNOTSUPP;
+ break;
}
+ wiphy_unlock(&rdev->wiphy);
+
+ return ret;
}
static int cfg80211_wext_giwessid(struct net_device *dev,
@@ -1366,18 +1468,27 @@ static int cfg80211_wext_giwessid(struct net_device *dev,
struct iw_point *data, char *ssid)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
+ struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
+ int ret;
data->flags = 0;
data->length = 0;
+ wiphy_lock(&rdev->wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_ADHOC:
- return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
+ ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
+ break;
case NL80211_IFTYPE_STATION:
- return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
+ ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
+ break;
default:
- return -EOPNOTSUPP;
+ ret = -EOPNOTSUPP;
+ break;
}
+ wiphy_unlock(&rdev->wiphy);
+
+ return ret;
}
static int cfg80211_wext_siwpmksa(struct net_device *dev,
@@ -1388,6 +1499,7 @@ static int cfg80211_wext_siwpmksa(struct net_device *dev,
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct cfg80211_pmksa cfg_pmksa;
struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
+ int ret;
memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
@@ -1397,28 +1509,39 @@ static int cfg80211_wext_siwpmksa(struct net_device *dev,
cfg_pmksa.bssid = pmksa->bssid.sa_data;
cfg_pmksa.pmkid = pmksa->pmkid;
+ wiphy_lock(&rdev->wiphy);
switch (pmksa->cmd) {
case IW_PMKSA_ADD:
- if (!rdev->ops->set_pmksa)
- return -EOPNOTSUPP;
-
- return rdev_set_pmksa(rdev, dev, &cfg_pmksa);
+ if (!rdev->ops->set_pmksa) {
+ ret = -EOPNOTSUPP;
+ break;
+ }
+ ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa);
+ break;
case IW_PMKSA_REMOVE:
- if (!rdev->ops->del_pmksa)
- return -EOPNOTSUPP;
-
- return rdev_del_pmksa(rdev, dev, &cfg_pmksa);
+ if (!rdev->ops->del_pmksa) {
+ ret = -EOPNOTSUPP;
+ break;
+ }
+ ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa);
+ break;
case IW_PMKSA_FLUSH:
- if (!rdev->ops->flush_pmksa)
- return -EOPNOTSUPP;
-
- return rdev_flush_pmksa(rdev, dev);
+ if (!rdev->ops->flush_pmksa) {
+ ret = -EOPNOTSUPP;
+ break;
+ }
+ ret = rdev_flush_pmksa(rdev, dev);
+ break;
default:
- return -EOPNOTSUPP;
+ ret = -EOPNOTSUPP;
+ break;
}
+ wiphy_unlock(&rdev->wiphy);
+
+ return ret;
}
#define DEFINE_WEXT_COMPAT_STUB(func, type) \
diff --git a/net/wireless/wext-sme.c b/net/wireless/wext-sme.c
index 73df23570d43..193a18a53142 100644
--- a/net/wireless/wext-sme.c
+++ b/net/wireless/wext-sme.c
@@ -3,7 +3,7 @@
* cfg80211 wext compat for managed mode.
*
* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
- * Copyright (C) 2009 Intel Corporation. All rights reserved.
+ * Copyright (C) 2009, 2020-2021 Intel Corporation.
*/
#include <linux/export.h>
@@ -379,6 +379,7 @@ int cfg80211_wext_siwmlme(struct net_device *dev,
if (mlme->addr.sa_family != ARPHRD_ETHER)
return -EINVAL;
+ wiphy_lock(&rdev->wiphy);
wdev_lock(wdev);
switch (mlme->cmd) {
case IW_MLME_DEAUTH:
@@ -390,6 +391,7 @@ int cfg80211_wext_siwmlme(struct net_device *dev,
break;
}
wdev_unlock(wdev);
+ wiphy_unlock(&rdev->wiphy);
return err;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.