#include "core.h"
#include "nl80211.h"
#include "wext-compat.h"
+#include "rdev-ops.h"
#define IEEE80211_SCAN_RESULT_EXPIRE (30 * HZ)
+static void bss_release(struct kref *ref)
+{
+ struct cfg80211_internal_bss *bss;
+
+ bss = container_of(ref, struct cfg80211_internal_bss, ref);
+
+ if (WARN_ON(atomic_read(&bss->hold)))
+ return;
+
+ if (bss->pub.free_priv)
+ bss->pub.free_priv(&bss->pub);
+
+ if (bss->beacon_ies_allocated)
+ kfree(bss->pub.beacon_ies);
+ if (bss->proberesp_ies_allocated)
+ kfree(bss->pub.proberesp_ies);
+
+ kfree(bss);
+}
+
+/* must hold dev->bss_lock! */
+static void __cfg80211_unlink_bss(struct cfg80211_registered_device *dev,
+ struct cfg80211_internal_bss *bss)
+{
+ list_del_init(&bss->list);
+ rb_erase(&bss->rbn, &dev->bss_tree);
+ kref_put(&bss->ref, bss_release);
+}
+
+/* must hold dev->bss_lock! */
+static void __cfg80211_bss_expire(struct cfg80211_registered_device *dev,
+ unsigned long expire_time)
+{
+ struct cfg80211_internal_bss *bss, *tmp;
+ bool expired = false;
+
+ list_for_each_entry_safe(bss, tmp, &dev->bss_list, list) {
+ if (atomic_read(&bss->hold))
+ continue;
+ if (!time_after(expire_time, bss->ts))
+ continue;
+
+ __cfg80211_unlink_bss(dev, bss);
+ expired = true;
+ }
+
+ if (expired)
+ dev->bss_generation++;
+}
+
void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev, bool leak)
{
struct cfg80211_scan_request *request;
if (wdev->netdev)
cfg80211_sme_scan_done(wdev->netdev);
- if (request->aborted)
+ if (request->aborted) {
nl80211_send_scan_aborted(rdev, wdev);
- else
+ } else {
+ if (request->flags & NL80211_SCAN_FLAG_FLUSH) {
+ /* flush entries from previous scans */
+ spin_lock_bh(&rdev->bss_lock);
+ __cfg80211_bss_expire(rdev, request->scan_start);
+ spin_unlock_bh(&rdev->bss_lock);
+ }
nl80211_send_scan_done(rdev, wdev);
+ }
#ifdef CONFIG_CFG80211_WEXT
if (wdev->netdev && !request->aborted) {
void cfg80211_scan_done(struct cfg80211_scan_request *request, bool aborted)
{
+ trace_cfg80211_scan_done(request, aborted);
WARN_ON(request != wiphy_to_dev(request->wiphy)->scan_req);
request->aborted = aborted;
void __cfg80211_sched_scan_results(struct work_struct *wk)
{
struct cfg80211_registered_device *rdev;
+ struct cfg80211_sched_scan_request *request;
rdev = container_of(wk, struct cfg80211_registered_device,
sched_scan_results_wk);
+ request = rdev->sched_scan_req;
+
mutex_lock(&rdev->sched_scan_mtx);
/* we don't have sched_scan_req anymore if the scan is stopping */
- if (rdev->sched_scan_req)
- nl80211_send_sched_scan_results(rdev,
- rdev->sched_scan_req->dev);
+ if (request) {
+ if (request->flags & NL80211_SCAN_FLAG_FLUSH) {
+ /* flush entries from previous scans */
+ spin_lock_bh(&rdev->bss_lock);
+ __cfg80211_bss_expire(rdev, request->scan_start);
+ spin_unlock_bh(&rdev->bss_lock);
+ request->scan_start =
+ jiffies + msecs_to_jiffies(request->interval);
+ }
+ nl80211_send_sched_scan_results(rdev, request->dev);
+ }
mutex_unlock(&rdev->sched_scan_mtx);
}
void cfg80211_sched_scan_results(struct wiphy *wiphy)
{
+ trace_cfg80211_sched_scan_results(wiphy);
/* ignore if we're not scanning */
if (wiphy_to_dev(wiphy)->sched_scan_req)
queue_work(cfg80211_wq,
{
struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+ trace_cfg80211_sched_scan_stopped(wiphy);
+
mutex_lock(&rdev->sched_scan_mtx);
__cfg80211_stop_sched_scan(rdev, true);
mutex_unlock(&rdev->sched_scan_mtx);
dev = rdev->sched_scan_req->dev;
if (!driver_initiated) {
- int err = rdev->ops->sched_scan_stop(&rdev->wiphy, dev);
+ int err = rdev_sched_scan_stop(rdev, dev);
if (err)
return err;
}
return 0;
}
-static void bss_release(struct kref *ref)
-{
- struct cfg80211_internal_bss *bss;
-
- bss = container_of(ref, struct cfg80211_internal_bss, ref);
- if (bss->pub.free_priv)
- bss->pub.free_priv(&bss->pub);
-
- if (bss->beacon_ies_allocated)
- kfree(bss->pub.beacon_ies);
- if (bss->proberesp_ies_allocated)
- kfree(bss->pub.proberesp_ies);
-
- BUG_ON(atomic_read(&bss->hold));
-
- kfree(bss);
-}
-
/* must hold dev->bss_lock! */
void cfg80211_bss_age(struct cfg80211_registered_device *dev,
unsigned long age_secs)
}
}
-/* must hold dev->bss_lock! */
-static void __cfg80211_unlink_bss(struct cfg80211_registered_device *dev,
- struct cfg80211_internal_bss *bss)
-{
- list_del_init(&bss->list);
- rb_erase(&bss->rbn, &dev->bss_tree);
- kref_put(&bss->ref, bss_release);
-}
-
-/* must hold dev->bss_lock! */
void cfg80211_bss_expire(struct cfg80211_registered_device *dev)
{
- struct cfg80211_internal_bss *bss, *tmp;
- bool expired = false;
-
- list_for_each_entry_safe(bss, tmp, &dev->bss_list, list) {
- if (atomic_read(&bss->hold))
- continue;
- if (!time_after(jiffies, bss->ts + IEEE80211_SCAN_RESULT_EXPIRE))
- continue;
- __cfg80211_unlink_bss(dev, bss);
- expired = true;
- }
-
- if (expired)
- dev->bss_generation++;
+ __cfg80211_bss_expire(dev, jiffies - IEEE80211_SCAN_RESULT_EXPIRE);
}
const u8 *cfg80211_find_ie(u8 eid, const u8 *ies, int len)
struct cfg80211_internal_bss *bss, *res = NULL;
unsigned long now = jiffies;
+ trace_cfg80211_get_bss(wiphy, channel, bssid, ssid, ssid_len, capa_mask,
+ capa_val);
+
spin_lock_bh(&dev->bss_lock);
list_for_each_entry(bss, &dev->bss_list, list) {
spin_unlock_bh(&dev->bss_lock);
if (!res)
return NULL;
+ trace_cfg80211_return_bss(&res->pub);
return &res->pub;
}
EXPORT_SYMBOL(cfg80211_get_bss);
return found;
}
+static struct ieee80211_channel *
+cfg80211_get_bss_channel(struct wiphy *wiphy, const u8 *ie, size_t ielen,
+ struct ieee80211_channel *channel)
+{
+ const u8 *tmp;
+ u32 freq;
+ int channel_number = -1;
+
+ tmp = cfg80211_find_ie(WLAN_EID_DS_PARAMS, ie, ielen);
+ if (tmp && tmp[1] == 1) {
+ channel_number = tmp[2];
+ } else {
+ tmp = cfg80211_find_ie(WLAN_EID_HT_OPERATION, ie, ielen);
+ if (tmp && tmp[1] >= sizeof(struct ieee80211_ht_operation)) {
+ struct ieee80211_ht_operation *htop = (void *)(tmp + 2);
+
+ channel_number = htop->primary_chan;
+ }
+ }
+
+ if (channel_number < 0)
+ return channel;
+
+ freq = ieee80211_channel_to_frequency(channel_number, channel->band);
+ channel = ieee80211_get_channel(wiphy, freq);
+ if (!channel)
+ return NULL;
+ if (channel->flags & IEEE80211_CHAN_DISABLED)
+ return NULL;
+ return channel;
+}
+
struct cfg80211_bss*
cfg80211_inform_bss(struct wiphy *wiphy,
struct ieee80211_channel *channel,
(signal < 0 || signal > 100)))
return NULL;
+ channel = cfg80211_get_bss_channel(wiphy, ie, ielen, channel);
+ if (!channel)
+ return NULL;
+
res = kzalloc(sizeof(*res) + privsz + ielen, gfp);
if (!res)
return NULL;
if (res->pub.capability & WLAN_CAPABILITY_ESS)
regulatory_hint_found_beacon(wiphy, channel, gfp);
+ trace_cfg80211_return_bss(&res->pub);
/* cfg80211_bss_update gives us a referenced result */
return &res->pub;
}
u.probe_resp.variable);
size_t privsz;
+ BUILD_BUG_ON(offsetof(struct ieee80211_mgmt, u.probe_resp.variable) !=
+ offsetof(struct ieee80211_mgmt, u.beacon.variable));
+
+ trace_cfg80211_inform_bss_frame(wiphy, channel, mgmt, len, signal);
+
if (WARN_ON(!mgmt))
return NULL;
privsz = wiphy->bss_priv_size;
+ channel = cfg80211_get_bss_channel(wiphy, mgmt->u.beacon.variable,
+ ielen, channel);
+ if (!channel)
+ return NULL;
+
res = kzalloc(sizeof(*res) + privsz + ielen, gfp);
if (!res)
return NULL;
if (res->pub.capability & WLAN_CAPABILITY_ESS)
regulatory_hint_found_beacon(wiphy, channel, gfp);
+ trace_cfg80211_return_bss(&res->pub);
/* cfg80211_bss_update gives us a referenced result */
return &res->pub;
}
creq->ssids = (void *)&creq->channels[n_channels];
creq->n_channels = n_channels;
creq->n_ssids = 1;
+ creq->scan_start = jiffies;
/* translate "Scan on frequencies" request */
i = 0;
creq->rates[i] = (1 << wiphy->bands[i]->n_bitrates) - 1;
rdev->scan_req = creq;
- err = rdev->ops->scan(wiphy, creq);
+ err = rdev_scan(rdev, creq);
if (err) {
rdev->scan_req = NULL;
/* creq will be freed below */
projects / firefly-linux-kernel-4.4.55.git / blobdiff