1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
6  * Copyright (c) 2010, ST-Ericsson
29 	skb = ieee80211_probereq_get(wvif->wdev->hw, vif->addr, NULL, 0,  in update_probe_tmpl()
30 				     req->ie_len);  in update_probe_tmpl()
32 		return -ENOMEM;  in update_probe_tmpl()
34 	skb_put_data(skb, req->ie, req->ie_len);  in update_probe_tmpl()
46 	for (i = start_idx; i < req->n_channels; i++) {  in send_scan_req()
47 		ch_start = req->channels[start_idx];  in send_scan_req()
48 		ch_cur = req->channels[i];  in send_scan_req()
49 		WARN(ch_cur->band != NL80211_BAND_2GHZ, "band not supported");  in send_scan_req()
50 		if (ch_cur->max_power != ch_start->max_power)  in send_scan_req()
52 		if ((ch_cur->flags ^ ch_start->flags) & IEEE80211_CHAN_NO_IR)  in send_scan_req()
55 	wfx_tx_lock_flush(wvif->wdev);  in send_scan_req()
56 	wvif->scan_abort = false;  in send_scan_req()
57 	reinit_completion(&wvif->scan_complete);  in send_scan_req()
58 	ret = wfx_hif_scan(wvif, req, start_idx, i - start_idx);  in send_scan_req()
60 		wfx_tx_unlock(wvif->wdev);  in send_scan_req()
61 		return -EIO;  in send_scan_req()
63 	ret = wait_for_completion_timeout(&wvif->scan_complete, 1 * HZ);  in send_scan_req()
66 		ret = wait_for_completion_timeout(&wvif->scan_complete, 1 * HZ);  in send_scan_req()
67 		dev_dbg(wvif->wdev->dev, "scan timeout (%d channels done)\n",  in send_scan_req()
68 			wvif->scan_nb_chan_done);  in send_scan_req()
71 		dev_err(wvif->wdev->dev, "scan didn't stop\n");  in send_scan_req()
72 		ret = -ETIMEDOUT;  in send_scan_req()
73 	} else if (wvif->scan_abort) {  in send_scan_req()
74 		dev_notice(wvif->wdev->dev, "scan abort\n");  in send_scan_req()
75 		ret = -ECONNABORTED;  in send_scan_req()
76 	} else if (wvif->scan_nb_chan_done > i - start_idx) {  in send_scan_req()
77 		ret = -EIO;  in send_scan_req()
79 		ret = wvif->scan_nb_chan_done;  in send_scan_req()
81 	if (req->channels[start_idx]->max_power != vif->bss_conf.txpower)  in send_scan_req()
82 		wfx_hif_set_output_power(wvif, vif->bss_conf.txpower);  in send_scan_req()
83 	wfx_tx_unlock(wvif->wdev);  in send_scan_req()
94 	struct ieee80211_scan_request *hw_req = wvif->scan_req;  in wfx_hw_scan_work()
97 	mutex_lock(&wvif->wdev->conf_mutex);  in wfx_hw_scan_work()
98 	mutex_lock(&wvif->scan_lock);  in wfx_hw_scan_work()
99 	if (wvif->join_in_progress) {  in wfx_hw_scan_work()
100 		dev_info(wvif->wdev->dev, "abort in-progress REQ_JOIN");  in wfx_hw_scan_work()
103 	update_probe_tmpl(wvif, &hw_req->req);  in wfx_hw_scan_work()
107 		ret = send_scan_req(wvif, &hw_req->req, chan_cur);  in wfx_hw_scan_work()
115 			dev_err(wvif->wdev->dev, "scan has not been able to start\n");  in wfx_hw_scan_work()
116 			ret = -ETIMEDOUT;  in wfx_hw_scan_work()
118 	} while (ret >= 0 && chan_cur < hw_req->req.n_channels);  in wfx_hw_scan_work()
119 	mutex_unlock(&wvif->scan_lock);  in wfx_hw_scan_work()
120 	mutex_unlock(&wvif->wdev->conf_mutex);  in wfx_hw_scan_work()
121 	wfx_ieee80211_scan_completed_compat(wvif->wdev->hw, ret < 0);  in wfx_hw_scan_work()
127 	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;  in wfx_hw_scan()
129 	WARN_ON(hw_req->req.n_channels > HIF_API_MAX_NB_CHANNELS);  in wfx_hw_scan()
130 	wvif->scan_req = hw_req;  in wfx_hw_scan()
131 	schedule_work(&wvif->scan_work);  in wfx_hw_scan()
137 	struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;  in wfx_cancel_hw_scan()
139 	wvif->scan_abort = true;  in wfx_cancel_hw_scan()
145 	wvif->scan_nb_chan_done = nb_chan_done;  in wfx_scan_complete()
146 	complete(&wvif->scan_complete);  in wfx_scan_complete()