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-rw-r--r--net/wireless/core.c159
1 files changed, 145 insertions, 14 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 9c21ebf9780..c22ef3492ee 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -4,6 +4,8 @@
* Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net>
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/if.h>
#include <linux/module.h>
#include <linux/err.h>
@@ -44,6 +46,11 @@ 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");
+
/* requires cfg80211_mutex to be held! */
struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx)
{
@@ -216,8 +223,7 @@ int cfg80211_dev_rename(struct cfg80211_registered_device *rdev,
rdev->wiphy.debugfsdir,
rdev->wiphy.debugfsdir->d_parent,
newname))
- printk(KERN_ERR "cfg80211: failed to rename debugfs dir to %s!\n",
- newname);
+ pr_err("failed to rename debugfs dir to %s!\n", newname);
nl80211_notify_dev_rename(rdev);
@@ -331,6 +337,7 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv)
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);
alloc_size = sizeof(*rdev) + sizeof_priv;
@@ -363,7 +370,7 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv)
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);
#ifdef CONFIG_CFG80211_WEXT
rdev->wiphy.wext = &cfg80211_wext_handler;
#endif
@@ -409,6 +416,67 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv)
}
EXPORT_SYMBOL(wiphy_new);
+static int wiphy_verify_combinations(struct wiphy *wiphy)
+{
+ const struct ieee80211_iface_combination *c;
+ int i, j;
+
+ /* If we have combinations enforce them */
+ if (wiphy->n_iface_combinations)
+ wiphy->flags |= WIPHY_FLAG_ENFORCE_COMBINATIONS;
+
+ 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 */
+ if (WARN_ON(c->max_interfaces < 2))
+ return -EINVAL;
+
+ /* Need at least one channel */
+ if (WARN_ON(!c->num_different_channels))
+ 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, this is
+ * used in cfg80211_can_change_interface()
+ */
+ 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;
+
+ cnt += c->limits[j].max;
+ /*
+ * Don't advertise an unsupported type
+ * in a combination.
+ */
+ if (WARN_ON((wiphy->interface_modes & types) != types))
+ return -EINVAL;
+ }
+
+ /* You can't even choose that many! */
+ if (WARN_ON(cnt < c->max_interfaces))
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
int wiphy_register(struct wiphy *wiphy)
{
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
@@ -437,6 +505,10 @@ int wiphy_register(struct wiphy *wiphy)
if (WARN_ON(ifmodes != wiphy->interface_modes))
wiphy->interface_modes = ifmodes;
+ res = wiphy_verify_combinations(wiphy);
+ if (res)
+ return res;
+
/* sanity check supported bands/channels */
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
sband = wiphy->bands[band];
@@ -449,6 +521,18 @@ int wiphy_register(struct wiphy *wiphy)
return -EINVAL;
/*
+ * Since cfg80211_disable_40mhz_24ghz is global, we can
+ * modify the sband's ht data even if the driver uses a
+ * global structure for that.
+ */
+ if (cfg80211_disable_40mhz_24ghz &&
+ band == IEEE80211_BAND_2GHZ &&
+ sband->ht_cap.ht_supported) {
+ sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+ sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40;
+ }
+
+ /*
* Since we use a u32 for rate bitmaps in
* ieee80211_get_response_rate, we cannot
* have more than 32 legacy rates.
@@ -474,6 +558,13 @@ int wiphy_register(struct wiphy *wiphy)
return -EINVAL;
}
+ if (rdev->wiphy.wowlan.n_patterns) {
+ if (WARN_ON(!rdev->wiphy.wowlan.pattern_min_len ||
+ rdev->wiphy.wowlan.pattern_min_len >
+ rdev->wiphy.wowlan.pattern_max_len))
+ return -EINVAL;
+ }
+
/* check and set up bitrates */
ieee80211_set_bitrate_flags(wiphy);
@@ -612,6 +703,7 @@ void cfg80211_dev_free(struct cfg80211_registered_device *rdev)
mutex_destroy(&rdev->devlist_mtx);
list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list)
cfg80211_put_bss(&scan->pub);
+ cfg80211_rdev_free_wowlan(rdev);
kfree(rdev);
}
@@ -645,6 +737,11 @@ static void wdev_cleanup_work(struct work_struct *work)
___cfg80211_scan_done(rdev, true);
}
+ if (WARN_ON(rdev->sched_scan_req &&
+ rdev->sched_scan_req->dev == wdev->netdev)) {
+ __cfg80211_stop_sched_scan(rdev, false);
+ }
+
cfg80211_unlock_rdev(rdev);
mutex_lock(&rdev->devlist_mtx);
@@ -666,6 +763,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
struct net_device *dev = ndev;
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev;
+ int ret;
if (!wdev)
return NOTIFY_DONE;
@@ -699,8 +797,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj,
"phy80211")) {
- printk(KERN_ERR "wireless: failed to add phy80211 "
- "symlink to netdev!\n");
+ pr_err("failed to add phy80211 symlink to netdev!\n");
}
wdev->netdev = dev;
wdev->sme_state = CFG80211_SME_IDLE;
@@ -717,13 +814,6 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
wdev->ps = false;
/* allow mac80211 to determine the timeout */
wdev->ps_timeout = -1;
- if (rdev->ops->set_power_mgmt)
- if (rdev->ops->set_power_mgmt(wdev->wiphy, dev,
- wdev->ps,
- wdev->ps_timeout)) {
- /* assume this means it's off */
- wdev->ps = false;
- }
if (!dev->ethtool_ops)
dev->ethtool_ops = &cfg80211_ethtool_ops;
@@ -740,6 +830,10 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
break;
case NL80211_IFTYPE_P2P_CLIENT:
case NL80211_IFTYPE_STATION:
+ cfg80211_lock_rdev(rdev);
+ __cfg80211_stop_sched_scan(rdev, false);
+ cfg80211_unlock_rdev(rdev);
+
wdev_lock(wdev);
#ifdef CONFIG_CFG80211_WEXT
kfree(wdev->wext.ie);
@@ -752,9 +846,13 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
cfg80211_mlme_down(rdev, dev);
wdev_unlock(wdev);
break;
+ case NL80211_IFTYPE_MESH_POINT:
+ cfg80211_leave_mesh(rdev, dev);
+ break;
default:
break;
}
+ wdev->beacon_interval = 0;
break;
case NETDEV_DOWN:
dev_hold(dev);
@@ -775,23 +873,53 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
}
cfg80211_lock_rdev(rdev);
mutex_lock(&rdev->devlist_mtx);
-#ifdef CONFIG_CFG80211_WEXT
wdev_lock(wdev);
switch (wdev->iftype) {
+#ifdef CONFIG_CFG80211_WEXT
case NL80211_IFTYPE_ADHOC:
cfg80211_ibss_wext_join(rdev, wdev);
break;
case NL80211_IFTYPE_STATION:
cfg80211_mgd_wext_connect(rdev, wdev);
break;
+#endif
+#ifdef CONFIG_MAC80211_MESH
+ case NL80211_IFTYPE_MESH_POINT:
+ {
+ /* backward compat code... */
+ struct mesh_setup setup;
+ memcpy(&setup, &default_mesh_setup,
+ sizeof(setup));
+ /* back compat only needed for mesh_id */
+ setup.mesh_id = wdev->ssid;
+ setup.mesh_id_len = wdev->mesh_id_up_len;
+ if (wdev->mesh_id_up_len)
+ __cfg80211_join_mesh(rdev, dev,
+ &setup,
+ &default_mesh_config);
+ break;
+ }
+#endif
default:
break;
}
wdev_unlock(wdev);
-#endif
rdev->opencount++;
mutex_unlock(&rdev->devlist_mtx);
cfg80211_unlock_rdev(rdev);
+
+ /*
+ * Configure power management to the driver here so that its
+ * correctly set also after interface type changes etc.
+ */
+ if (wdev->iftype == NL80211_IFTYPE_STATION &&
+ rdev->ops->set_power_mgmt)
+ if (rdev->ops->set_power_mgmt(wdev->wiphy, dev,
+ wdev->ps,
+ wdev->ps_timeout)) {
+ /* assume this means it's off */
+ wdev->ps = false;
+ }
break;
case NETDEV_UNREGISTER:
/*
@@ -831,6 +959,9 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
return notifier_from_errno(-EOPNOTSUPP);
if (rfkill_blocked(rdev->rfkill))
return notifier_from_errno(-ERFKILL);
+ ret = cfg80211_can_add_interface(rdev, wdev->iftype);
+ if (ret)
+ return notifier_from_errno(ret);
break;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-04-16 08:34:24 +0000