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mac80211: Add support for beacon report radio measurement

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Add the following to support beacon report radio measurement
with the measurement mode field set to passive or active:
1. Propagate the required scan duration to the device
2. Report the scan start time (in terms of TSF)
3. Report each BSS's detection time (also in terms of TSF)

TSF times refer to the BSS that the interface that requested the
scan is connected to.

Signed-off-by: Assaf Krauss <assaf.krauss@intel.com>
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
[changed ath9k/10k, at76c59x-usb, iwlegacy, wl1251 and wlcore to match
the new API]
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Avraham Stern
2016-07-05 15:23:12 +03:00
committed by Johannes Berg
parent 1d76250bd3
commit 7947d3e075
15 changed files with 131 additions and 35 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
net/mac80211/ieee80211_i.h
View File

@@ -1250,6 +1250,7 @@ struct ieee80211_local {
int scan_channel_idx;
int scan_ies_len;
int hw_scan_ies_bufsize;
struct cfg80211_scan_info scan_info;
struct work_struct sched_scan_stopped_work;
struct ieee80211_sub_if_data __rcu *sched_scan_sdata;

42
net/mac80211/scan.c
View File

@@ -7,6 +7,7 @@
* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
* Copyright 2007, Michael Wu <flamingice@sourmilk.net>
* Copyright 2013-2015 Intel Mobile Communications GmbH
* Copyright 2016 Intel Deutschland GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -70,6 +71,7 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
.boottime_ns = rx_status->boottime_ns,
};
bool signal_valid;
struct ieee80211_sub_if_data *scan_sdata;
if (ieee80211_hw_check(&local->hw, SIGNAL_DBM))
bss_meta.signal = rx_status->signal * 100;
@@ -83,6 +85,20 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
bss_meta.scan_width = NL80211_BSS_CHAN_WIDTH_10;
bss_meta.chan = channel;
rcu_read_lock();
scan_sdata = rcu_dereference(local->scan_sdata);
if (scan_sdata && scan_sdata->vif.type == NL80211_IFTYPE_STATION &&
scan_sdata->vif.bss_conf.assoc &&
ieee80211_have_rx_timestamp(rx_status)) {
bss_meta.parent_tsf =
ieee80211_calculate_rx_timestamp(local, rx_status,
len + FCS_LEN, 24);
ether_addr_copy(bss_meta.parent_bssid,
scan_sdata->vif.bss_conf.bssid);
}
rcu_read_unlock();
cbss = cfg80211_inform_bss_frame_data(local->hw.wiphy, &bss_meta,
mgmt, len, GFP_ATOMIC);
if (!cbss)
@@ -345,6 +361,11 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
if (rc == 0)
return;
/* HW scan failed and is going to be reported as done, so clear
* old scan info.
*/
memset(&local->scan_info, 0, sizeof(local->scan_info));
}
kfree(local->hw_scan_req);
@@ -354,11 +375,8 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
lockdep_is_held(&local->mtx));
if (scan_req != local->int_scan_req) {
struct cfg80211_scan_info info = {
.aborted = aborted,
};
cfg80211_scan_done(scan_req, &info);
local->scan_info.aborted = aborted;
cfg80211_scan_done(scan_req, &local->scan_info);
}
RCU_INIT_POINTER(local->scan_req, NULL);
@@ -396,15 +414,19 @@ static void __ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
ieee80211_start_next_roc(local);
}
void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
void ieee80211_scan_completed(struct ieee80211_hw *hw,
struct cfg80211_scan_info *info)
{
struct ieee80211_local *local = hw_to_local(hw);
trace_api_scan_completed(local, aborted);
trace_api_scan_completed(local, info);
set_bit(SCAN_COMPLETED, &local->scanning);
if (aborted)
if (info->aborted)
set_bit(SCAN_ABORTED, &local->scanning);
memcpy(&local->scan_info, info, sizeof(*info));
ieee80211_queue_delayed_work(&local->hw, &local->scan_work, 0);
}
EXPORT_SYMBOL(ieee80211_scan_completed);
@@ -571,6 +593,9 @@ static int __ieee80211_start_scan(struct ieee80211_sub_if_data *sdata,
local->hw_scan_req->req.ie = ies;
local->hw_scan_req->req.flags = req->flags;
eth_broadcast_addr(local->hw_scan_req->req.bssid);
local->hw_scan_req->req.duration = req->duration;
local->hw_scan_req->req.duration_mandatory =
req->duration_mandatory;
local->hw_scan_band = 0;
@@ -1078,6 +1103,7 @@ void ieee80211_scan_cancel(struct ieee80211_local *local)
*/
cancel_delayed_work(&local->scan_work);
/* and clean up */
memset(&local->scan_info, 0, sizeof(local->scan_info));
__ieee80211_scan_completed(&local->hw, true);
out:
mutex_unlock(&local->mtx);