Have proper request id filled in the SCHED_SCAN_RESULTS and
SCHED_SCAN_STOPPED notifications toward user-space by having the
driver provide it through the api.

Reviewed-by: Hante Meuleman <hante.meule...@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieter-paul.giesbe...@broadcom.com>
Reviewed-by: Franky Lin <franky....@broadcom.com>
Signed-off-by: Arend van Spriel <arend.vanspr...@broadcom.com>
---
 drivers/net/wireless/ath/ath6kl/cfg80211.c         |  2 +-
 drivers/net/wireless/ath/ath6kl/wmi.c              |  2 +-
 .../broadcom/brcm80211/brcmfmac/cfg80211.c         |  4 +--
 drivers/net/wireless/marvell/mwifiex/cfg80211.c    |  6 ++---
 drivers/net/wireless/marvell/mwifiex/main.c        |  2 +-
 drivers/net/wireless/marvell/mwifiex/sta_cmdresp.c |  2 +-
 drivers/net/wireless/marvell/mwifiex/sta_event.c   |  2 +-
 drivers/net/wireless/marvell/mwifiex/sta_ioctl.c   |  2 +-
 include/net/cfg80211.h                             | 11 +++++---
 net/mac80211/pm.c                                  |  2 +-
 net/mac80211/scan.c                                |  4 +--
 net/mac80211/util.c                                |  2 +-
 net/wireless/core.c                                |  1 -
 net/wireless/core.h                                |  1 -
 net/wireless/nl80211.c                             |  2 ++
 net/wireless/scan.c                                | 30 ++++++++++------------
 net/wireless/trace.h                               | 26 ++++++++++++++-----
 17 files changed, 59 insertions(+), 42 deletions(-)

diff --git a/drivers/net/wireless/ath/ath6kl/cfg80211.c 
b/drivers/net/wireless/ath/ath6kl/cfg80211.c
index fd53ffb..decb937 100644
--- a/drivers/net/wireless/ath/ath6kl/cfg80211.c
+++ b/drivers/net/wireless/ath/ath6kl/cfg80211.c
@@ -169,7 +169,7 @@ static void ath6kl_cfg80211_sscan_disable(struct ath6kl_vif 
*vif)
        if (!stopped)
                return;
 
-       cfg80211_sched_scan_stopped(ar->wiphy);
+       cfg80211_sched_scan_stopped(ar->wiphy, 0);
 }
 
 static int ath6kl_set_wpa_version(struct ath6kl_vif *vif,
diff --git a/drivers/net/wireless/ath/ath6kl/wmi.c 
b/drivers/net/wireless/ath/ath6kl/wmi.c
index 84a6d12..04df853 100644
--- a/drivers/net/wireless/ath/ath6kl/wmi.c
+++ b/drivers/net/wireless/ath/ath6kl/wmi.c
@@ -1082,7 +1082,7 @@ void ath6kl_wmi_sscan_timer(unsigned long ptr)
 {
        struct ath6kl_vif *vif = (struct ath6kl_vif *) ptr;
 
-       cfg80211_sched_scan_results(vif->ar->wiphy);
+       cfg80211_sched_scan_results(vif->ar->wiphy, 0);
 }
 
 static int ath6kl_wmi_bssinfo_event_rx(struct wmi *wmi, u8 *datap, int len,
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c 
b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
index 3ca1132..8da9ae0 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/cfg80211.c
@@ -762,7 +762,7 @@ s32 brcmf_notify_escan_complete(struct brcmf_cfg80211_info 
*cfg,
                brcmf_dbg(SCAN, "scheduled scan completed\n");
                cfg->internal_escan = false;
                if (!aborted)
-                       cfg80211_sched_scan_results(cfg_to_wiphy(cfg));
+                       cfg80211_sched_scan_results(cfg_to_wiphy(cfg), 0);
        } else if (scan_request) {
                struct cfg80211_scan_info info = {
                        .aborted = aborted,
@@ -3357,7 +3357,7 @@ static int brcmf_start_internal_escan(struct brcmf_if 
*ifp,
                goto free_req;
 
 out_err:
-       cfg80211_sched_scan_stopped(wiphy);
+       cfg80211_sched_scan_stopped(wiphy, 0);
 free_req:
        kfree(request);
        return err;
diff --git a/drivers/net/wireless/marvell/mwifiex/cfg80211.c 
b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
index 65783a4..9b30ad4 100644
--- a/drivers/net/wireless/marvell/mwifiex/cfg80211.c
+++ b/drivers/net/wireless/marvell/mwifiex/cfg80211.c
@@ -2053,7 +2053,7 @@ static int mwifiex_cfg80211_start_ap(struct wiphy *wiphy,
        struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
 
        if (!mwifiex_stop_bg_scan(priv))
-               cfg80211_sched_scan_stopped_rtnl(priv->wdev.wiphy);
+               cfg80211_sched_scan_stopped_rtnl(priv->wdev.wiphy, 0);
 
        if (mwifiex_deauthenticate(priv, NULL))
                return -EFAULT;
@@ -2321,7 +2321,7 @@ static int mwifiex_cfg80211_inform_ibss_bss(struct 
mwifiex_private *priv)
                    (int)sme->ssid_len, (char *)sme->ssid, sme->bssid);
 
        if (!mwifiex_stop_bg_scan(priv))
-               cfg80211_sched_scan_stopped_rtnl(priv->wdev.wiphy);
+               cfg80211_sched_scan_stopped_rtnl(priv->wdev.wiphy, 0);
 
        ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
                                     priv->bss_mode, sme->channel, sme, 0);
@@ -2530,7 +2530,7 @@ static int mwifiex_set_ibss_params(struct mwifiex_private 
*priv,
                priv->scan_block = false;
 
        if (!mwifiex_stop_bg_scan(priv))
-               cfg80211_sched_scan_stopped_rtnl(priv->wdev.wiphy);
+               cfg80211_sched_scan_stopped_rtnl(priv->wdev.wiphy, 0);
 
        user_scan_cfg = kzalloc(sizeof(*user_scan_cfg), GFP_KERNEL);
        if (!user_scan_cfg)
diff --git a/drivers/net/wireless/marvell/mwifiex/main.c 
b/drivers/net/wireless/marvell/mwifiex/main.c
index f50080a..f82da3f 100644
--- a/drivers/net/wireless/marvell/mwifiex/main.c
+++ b/drivers/net/wireless/marvell/mwifiex/main.c
@@ -748,7 +748,7 @@ static int mwifiex_init_hw_fw(struct mwifiex_adapter 
*adapter,
                mwifiex_dbg(priv->adapter, INFO,
                            "aborting bgscan on ndo_stop\n");
                mwifiex_stop_bg_scan(priv);
-               cfg80211_sched_scan_stopped(priv->wdev.wiphy);
+               cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
        }
 
        return 0;
diff --git a/drivers/net/wireless/marvell/mwifiex/sta_cmdresp.c 
b/drivers/net/wireless/marvell/mwifiex/sta_cmdresp.c
index ab75da3..f1d1f56f 100644
--- a/drivers/net/wireless/marvell/mwifiex/sta_cmdresp.c
+++ b/drivers/net/wireless/marvell/mwifiex/sta_cmdresp.c
@@ -1201,7 +1201,7 @@ int mwifiex_process_sta_cmdresp(struct mwifiex_private 
*priv, u16 cmdresp_no,
                break;
        case HostCmd_CMD_802_11_BG_SCAN_QUERY:
                ret = mwifiex_ret_802_11_scan(priv, resp);
-               cfg80211_sched_scan_results(priv->wdev.wiphy);
+               cfg80211_sched_scan_results(priv->wdev.wiphy, 0);
                mwifiex_dbg(adapter, CMD,
                            "info: CMD_RESP: BG_SCAN result is ready!\n");
                break;
diff --git a/drivers/net/wireless/marvell/mwifiex/sta_event.c 
b/drivers/net/wireless/marvell/mwifiex/sta_event.c
index b5b7664..839df8a 100644
--- a/drivers/net/wireless/marvell/mwifiex/sta_event.c
+++ b/drivers/net/wireless/marvell/mwifiex/sta_event.c
@@ -793,7 +793,7 @@ int mwifiex_process_sta_event(struct mwifiex_private *priv)
 
        case EVENT_BG_SCAN_STOPPED:
                dev_dbg(adapter->dev, "event: BGS_STOPPED\n");
-               cfg80211_sched_scan_stopped(priv->wdev.wiphy);
+               cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
                if (priv->sched_scanning)
                        priv->sched_scanning = false;
                break;
diff --git a/drivers/net/wireless/marvell/mwifiex/sta_ioctl.c 
b/drivers/net/wireless/marvell/mwifiex/sta_ioctl.c
index 1532ac9..42997e0 100644
--- a/drivers/net/wireless/marvell/mwifiex/sta_ioctl.c
+++ b/drivers/net/wireless/marvell/mwifiex/sta_ioctl.c
@@ -560,7 +560,7 @@ int mwifiex_enable_hs(struct mwifiex_adapter *adapter)
 #endif
                        mwifiex_dbg(adapter, CMD, "aborting bgscan!\n");
                        mwifiex_stop_bg_scan(priv);
-                       cfg80211_sched_scan_stopped(priv->wdev.wiphy);
+                       cfg80211_sched_scan_stopped(priv->wdev.wiphy, 0);
 #ifdef CONFIG_PM
                }
 #endif
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 84e3baa..0f82062 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1666,6 +1666,7 @@ struct cfg80211_bss_select_adjust {
  *     (others are filtered out).
  *     If ommited, all results are passed.
  * @n_match_sets: number of match sets
+ * @results_wk: worker for processing results notification.
  * @wiphy: the wiphy this was for
  * @dev: the interface
  * @scan_start: start time of the scheduled scan
@@ -1722,6 +1723,7 @@ struct cfg80211_sched_scan_request {
        struct cfg80211_bss_select_adjust rssi_adjust;
 
        /* internal */
+       struct work_struct results_wk;
        struct wiphy *wiphy;
        struct net_device *dev;
        unsigned long scan_start;
@@ -4561,31 +4563,34 @@ void cfg80211_scan_done(struct cfg80211_scan_request 
*request,
  * cfg80211_sched_scan_results - notify that new scan results are available
  *
  * @wiphy: the wiphy which got scheduled scan results
+ * @reqid: identifier for the related scheduled scan request
  */
-void cfg80211_sched_scan_results(struct wiphy *wiphy);
+void cfg80211_sched_scan_results(struct wiphy *wiphy, u64 reqid);
 
 /**
  * cfg80211_sched_scan_stopped - notify that the scheduled scan has stopped
  *
  * @wiphy: the wiphy on which the scheduled scan stopped
+ * @reqid: identifier for the related scheduled scan request
  *
  * The driver can call this function to inform cfg80211 that the
  * scheduled scan had to be stopped, for whatever reason.  The driver
  * is then called back via the sched_scan_stop operation when done.
  */
-void cfg80211_sched_scan_stopped(struct wiphy *wiphy);
+void cfg80211_sched_scan_stopped(struct wiphy *wiphy, u64 reqid);
 
 /**
  * cfg80211_sched_scan_stopped_rtnl - notify that the scheduled scan has 
stopped
  *
  * @wiphy: the wiphy on which the scheduled scan stopped
+ * @reqid: identifier for the related scheduled scan request
  *
  * The driver can call this function to inform cfg80211 that the
  * scheduled scan had to be stopped, for whatever reason.  The driver
  * is then called back via the sched_scan_stop operation when done.
  * This function should be called with rtnl locked.
  */
-void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy);
+void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy, u64 reqid);
 
 /**
  * cfg80211_inform_bss_frame_data - inform cfg80211 of a received BSS frame
diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
index 76a8bcd..a87d195 100644
--- a/net/mac80211/pm.c
+++ b/net/mac80211/pm.c
@@ -10,7 +10,7 @@ static void ieee80211_sched_scan_cancel(struct 
ieee80211_local *local)
 {
        if (ieee80211_request_sched_scan_stop(local))
                return;
-       cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy);
+       cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
 }
 
 int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan 
*wowlan)
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index faab3c4..94be10e 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -1219,7 +1219,7 @@ void ieee80211_sched_scan_results(struct ieee80211_hw *hw)
 
        trace_api_sched_scan_results(local);
 
-       cfg80211_sched_scan_results(hw->wiphy);
+       cfg80211_sched_scan_results(hw->wiphy, 0);
 }
 EXPORT_SYMBOL(ieee80211_sched_scan_results);
 
@@ -1239,7 +1239,7 @@ void ieee80211_sched_scan_end(struct ieee80211_local 
*local)
 
        mutex_unlock(&local->mtx);
 
-       cfg80211_sched_scan_stopped(local->hw.wiphy);
+       cfg80211_sched_scan_stopped(local->hw.wiphy, 0);
 }
 
 void ieee80211_sched_scan_stopped_work(struct work_struct *work)
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 7a37ce7..5890969 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -2103,7 +2103,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
        mutex_unlock(&local->mtx);
 
        if (sched_scan_stopped)
-               cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy);
+               cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
 
  wake_up:
        if (local->in_reconfig) {
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 45e1400..9b8e8e8 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -490,7 +490,6 @@ struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, 
int sizeof_priv,
        INIT_LIST_HEAD(&rdev->bss_list);
        INIT_LIST_HEAD(&rdev->sched_scan_req_list);
        INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done);
-       INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results);
        INIT_LIST_HEAD(&rdev->mlme_unreg);
        spin_lock_init(&rdev->mlme_unreg_lock);
        INIT_WORK(&rdev->mlme_unreg_wk, cfg80211_mlme_unreg_wk);
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 25419a0..df5b975 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -77,7 +77,6 @@ struct cfg80211_registered_device {
        struct list_head sched_scan_req_list;
        unsigned long suspend_at;
        struct work_struct scan_done_wk;
-       struct work_struct sched_scan_results_wk;
 
        struct genl_info *cur_cmd_info;
 
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 19cc70a..b0f7c83 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -7402,6 +7402,8 @@ static int nl80211_start_sched_scan(struct sk_buff *skb,
        if (err)
                goto out_err;
 
+       INIT_WORK(&sched_scan_req->results_wk, __cfg80211_sched_scan_results);
+
        /* leave request id zero for legacy request
         * or if driver does not support multi-scheduled scan
         */
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 8d86f70..9af3141 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -369,15 +369,13 @@ 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 = container_of(wk, struct cfg80211_sched_scan_request, 
results_wk);
+       rdev = wiphy_to_rdev(request->wiphy);
 
        rtnl_lock();
 
-       request = cfg80211_find_sched_scan_req(rdev, 0);
-
        /* we don't have sched_scan_req anymore if the scan is stopping */
-       if (!IS_ERR(request)) {
+       if (request) {
                if (request->flags & NL80211_SCAN_FLAG_FLUSH) {
                        /* flush entries from previous scans */
                        spin_lock_bh(&rdev->bss_lock);
@@ -391,40 +389,40 @@ void __cfg80211_sched_scan_results(struct work_struct *wk)
        rtnl_unlock();
 }
 
-void cfg80211_sched_scan_results(struct wiphy *wiphy)
+void cfg80211_sched_scan_results(struct wiphy *wiphy, u64 reqid)
 {
-       struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
        struct cfg80211_sched_scan_request *request;
 
-       trace_cfg80211_sched_scan_results(wiphy);
+       trace_cfg80211_sched_scan_results(wiphy, reqid);
        /* ignore if we're not scanning */
 
        rtnl_lock();
-       request = cfg80211_find_sched_scan_req(rdev, 0);
+       request = cfg80211_find_sched_scan_req(wiphy_to_rdev(wiphy), reqid);
        rtnl_unlock();
 
        if (!IS_ERR(request))
-               queue_work(cfg80211_wq,
-                          &wiphy_to_rdev(wiphy)->sched_scan_results_wk);
+               queue_work(cfg80211_wq, &request->results_wk);
+       else
+               wiphy_err(wiphy, "reqid %llu not found\n", reqid);
 }
 EXPORT_SYMBOL(cfg80211_sched_scan_results);
 
-void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy)
+void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy, u64 reqid)
 {
        struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
 
        ASSERT_RTNL();
 
-       trace_cfg80211_sched_scan_stopped(wiphy);
+       trace_cfg80211_sched_scan_stopped(wiphy, reqid);
 
-       __cfg80211_stop_sched_scan(rdev, 0, true);
+       __cfg80211_stop_sched_scan(rdev, reqid, true);
 }
 EXPORT_SYMBOL(cfg80211_sched_scan_stopped_rtnl);
 
-void cfg80211_sched_scan_stopped(struct wiphy *wiphy)
+void cfg80211_sched_scan_stopped(struct wiphy *wiphy, u64 reqid)
 {
        rtnl_lock();
-       cfg80211_sched_scan_stopped_rtnl(wiphy);
+       cfg80211_sched_scan_stopped_rtnl(wiphy, reqid);
        rtnl_unlock();
 }
 EXPORT_SYMBOL(cfg80211_sched_scan_stopped);
diff --git a/net/wireless/trace.h b/net/wireless/trace.h
index 8d8f6b4..ca8b205 100644
--- a/net/wireless/trace.h
+++ b/net/wireless/trace.h
@@ -2820,14 +2820,28 @@
                  MAC_PR_ARG(tsf_bssid))
 );
 
-DEFINE_EVENT(wiphy_only_evt, cfg80211_sched_scan_results,
-       TP_PROTO(struct wiphy *wiphy),
-       TP_ARGS(wiphy)
+DECLARE_EVENT_CLASS(wiphy_id_evt,
+       TP_PROTO(struct wiphy *wiphy, u64 id),
+       TP_ARGS(wiphy, id),
+       TP_STRUCT__entry(
+               WIPHY_ENTRY
+               __field(u64, id)
+       ),
+       TP_fast_assign(
+               WIPHY_ASSIGN;
+               __entry->id = id;
+       ),
+       TP_printk(WIPHY_PR_FMT ", id: %llu", WIPHY_PR_ARG, __entry->id)
 );
 
-DEFINE_EVENT(wiphy_only_evt, cfg80211_sched_scan_stopped,
-       TP_PROTO(struct wiphy *wiphy),
-       TP_ARGS(wiphy)
+DEFINE_EVENT(wiphy_id_evt, cfg80211_sched_scan_stopped,
+       TP_PROTO(struct wiphy *wiphy, u64 id),
+       TP_ARGS(wiphy, id)
+);
+
+DEFINE_EVENT(wiphy_id_evt, cfg80211_sched_scan_results,
+       TP_PROTO(struct wiphy *wiphy, u64 id),
+       TP_ARGS(wiphy, id)
 );
 
 TRACE_EVENT(cfg80211_get_bss,
-- 
1.9.1

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