[mirror_ubuntu-jammy-kernel.git] / drivers / net / wireless / ti / wlcore / scan.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * This file is part of wl1271
 *
 * Copyright (C) 2009-2010 Nokia Corporation
 *
 * Contact: Luciano Coelho <luciano.coelho@nokia.com>
 */

#include <linux/ieee80211.h>
#include <linux/pm_runtime.h>

#include "wlcore.h"
#include "debug.h"
#include "cmd.h"
#include "scan.h"
#include "acx.h"
#include "tx.h"

void wl1271_scan_complete_work(struct work_struct *work)
{
	struct delayed_work *dwork;
	struct wl1271 *wl;
	struct wl12xx_vif *wlvif;
	struct cfg80211_scan_info info = {
		.aborted = false,
	};
	int ret;

	dwork = to_delayed_work(work);
	wl = container_of(dwork, struct wl1271, scan_complete_work);

	wl1271_debug(DEBUG_SCAN, "Scanning complete");

	mutex_lock(&wl->mutex);

	if (unlikely(wl->state != WLCORE_STATE_ON))
		goto out;

	if (wl->scan.state == WL1271_SCAN_STATE_IDLE)
		goto out;

	wlvif = wl->scan_wlvif;

	/*
	 * Rearm the tx watchdog just before idling scan. This
	 * prevents just-finished scans from triggering the watchdog
	 */
	wl12xx_rearm_tx_watchdog_locked(wl);

	wl->scan.state = WL1271_SCAN_STATE_IDLE;
	memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
	wl->scan.req = NULL;
	wl->scan_wlvif = NULL;

	ret = pm_runtime_get_sync(wl->dev);
	if (ret < 0) {
		pm_runtime_put_noidle(wl->dev);
		goto out;
	}

	if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
		/* restore hardware connection monitoring template */
		wl1271_cmd_build_ap_probe_req(wl, wlvif, wlvif->probereq);
	}

	if (wl->scan.failed) {
		wl1271_info("Scan completed due to error.");
		wl12xx_queue_recovery_work(wl);
	}

	wlcore_cmd_regdomain_config_locked(wl);

	pm_runtime_mark_last_busy(wl->dev);
	pm_runtime_put_autosuspend(wl->dev);

	ieee80211_scan_completed(wl->hw, &info);

out:
	mutex_unlock(&wl->mutex);

}

static void wlcore_started_vifs_iter(void *data, u8 *mac,
				     struct ieee80211_vif *vif)
{
	struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
	bool active = false;
	int *count = (int *)data;

	/*
	 * count active interfaces according to interface type.
	 * checking only bss_conf.idle is bad for some cases, e.g.
	 * we don't want to count sta in p2p_find as active interface.
	 */
	switch (wlvif->bss_type) {
	case BSS_TYPE_STA_BSS:
		if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
			active = true;
		break;

	case BSS_TYPE_AP_BSS:
		if (wlvif->wl->active_sta_count > 0)
			active = true;
		break;

	default:
		break;
	}

	if (active)
		(*count)++;
}

static int wlcore_count_started_vifs(struct wl1271 *wl)
{
	int count = 0;

	ieee80211_iterate_active_interfaces_atomic(wl->hw,
					IEEE80211_IFACE_ITER_RESUME_ALL,
					wlcore_started_vifs_iter, &count);
	return count;
}

static int
wlcore_scan_get_channels(struct wl1271 *wl,
			 struct ieee80211_channel *req_channels[],
			 u32 n_channels,
			 u32 n_ssids,
			 struct conn_scan_ch_params *channels,
			 u32 band, bool radar, bool passive,
			 int start, int max_channels,
			 u8 *n_pactive_ch,
			 int scan_type)
{
	int i, j;
	u32 flags;
	bool force_passive = !n_ssids;
	u32 min_dwell_time_active, max_dwell_time_active;
	u32 dwell_time_passive, dwell_time_dfs;

	/* configure dwell times according to scan type */
	if (scan_type == SCAN_TYPE_SEARCH) {
		struct conf_scan_settings *c = &wl->conf.scan;
		bool active_vif_exists = !!wlcore_count_started_vifs(wl);

		min_dwell_time_active = active_vif_exists ?
			c->min_dwell_time_active :
			c->min_dwell_time_active_long;
		max_dwell_time_active = active_vif_exists ?
			c->max_dwell_time_active :
			c->max_dwell_time_active_long;
		dwell_time_passive = c->dwell_time_passive;
		dwell_time_dfs = c->dwell_time_dfs;
	} else {
		struct conf_sched_scan_settings *c = &wl->conf.sched_scan;
		u32 delta_per_probe;

		if (band == NL80211_BAND_5GHZ)
			delta_per_probe = c->dwell_time_delta_per_probe_5;
		else
			delta_per_probe = c->dwell_time_delta_per_probe;

		min_dwell_time_active = c->base_dwell_time +
			 n_ssids * c->num_probe_reqs * delta_per_probe;

		max_dwell_time_active = min_dwell_time_active +
					c->max_dwell_time_delta;
		dwell_time_passive = c->dwell_time_passive;
		dwell_time_dfs = c->dwell_time_dfs;
	}
	min_dwell_time_active = DIV_ROUND_UP(min_dwell_time_active, 1000);
	max_dwell_time_active = DIV_ROUND_UP(max_dwell_time_active, 1000);
	dwell_time_passive = DIV_ROUND_UP(dwell_time_passive, 1000);
	dwell_time_dfs = DIV_ROUND_UP(dwell_time_dfs, 1000);

	for (i = 0, j = start;
	     i < n_channels && j < max_channels;
	     i++) {
		flags = req_channels[i]->flags;

		if (force_passive)
			flags |= IEEE80211_CHAN_NO_IR;

		if ((req_channels[i]->band == band) &&
		    !(flags & IEEE80211_CHAN_DISABLED) &&
		    (!!(flags & IEEE80211_CHAN_RADAR) == radar) &&
		    /* if radar is set, we ignore the passive flag */
		    (radar ||
		     !!(flags & IEEE80211_CHAN_NO_IR) == passive)) {
			if (flags & IEEE80211_CHAN_RADAR) {
				channels[j].flags |= SCAN_CHANNEL_FLAGS_DFS;

				channels[j].passive_duration =
					cpu_to_le16(dwell_time_dfs);
			} else {
				channels[j].passive_duration =
					cpu_to_le16(dwell_time_passive);
			}

			channels[j].min_duration =
				cpu_to_le16(min_dwell_time_active);
			channels[j].max_duration =
				cpu_to_le16(max_dwell_time_active);

			channels[j].tx_power_att = req_channels[i]->max_power;
			channels[j].channel = req_channels[i]->hw_value;

			if (n_pactive_ch &&
			    (band == NL80211_BAND_2GHZ) &&
			    (channels[j].channel >= 12) &&
			    (channels[j].channel <= 14) &&
			    (flags & IEEE80211_CHAN_NO_IR) &&
			    !force_passive) {
				/* pactive channels treated as DFS */
				channels[j].flags = SCAN_CHANNEL_FLAGS_DFS;

				/*
				 * n_pactive_ch is counted down from the end of
				 * the passive channel list
				 */
				(*n_pactive_ch)++;
				wl1271_debug(DEBUG_SCAN, "n_pactive_ch = %d",
					     *n_pactive_ch);
			}

			wl1271_debug(DEBUG_SCAN, "freq %d, ch. %d, flags 0x%x, power %d, min/max_dwell %d/%d%s%s",
				     req_channels[i]->center_freq,
				     req_channels[i]->hw_value,
				     req_channels[i]->flags,
				     req_channels[i]->max_power,
				     min_dwell_time_active,
				     max_dwell_time_active,
				     flags & IEEE80211_CHAN_RADAR ?
					", DFS" : "",
				     flags & IEEE80211_CHAN_NO_IR ?
					", NO-IR" : "");
			j++;
		}
	}

	return j - start;
}

bool
wlcore_set_scan_chan_params(struct wl1271 *wl,
			    struct wlcore_scan_channels *cfg,
			    struct ieee80211_channel *channels[],
			    u32 n_channels,
			    u32 n_ssids,
			    int scan_type)
{
	u8 n_pactive_ch = 0;

	cfg->passive[0] =
		wlcore_scan_get_channels(wl,
					 channels,
					 n_channels,
					 n_ssids,
					 cfg->channels_2,
					 NL80211_BAND_2GHZ,
					 false, true, 0,
					 MAX_CHANNELS_2GHZ,
					 &n_pactive_ch,
					 scan_type);
	cfg->active[0] =
		wlcore_scan_get_channels(wl,
					 channels,
					 n_channels,
					 n_ssids,
					 cfg->channels_2,
					 NL80211_BAND_2GHZ,
					 false, false,
					 cfg->passive[0],
					 MAX_CHANNELS_2GHZ,
					 &n_pactive_ch,
					 scan_type);
	cfg->passive[1] =
		wlcore_scan_get_channels(wl,
					 channels,
					 n_channels,
					 n_ssids,
					 cfg->channels_5,
					 NL80211_BAND_5GHZ,
					 false, true, 0,
					 wl->max_channels_5,
					 &n_pactive_ch,
					 scan_type);
	cfg->dfs =
		wlcore_scan_get_channels(wl,
					 channels,
					 n_channels,
					 n_ssids,
					 cfg->channels_5,
					 NL80211_BAND_5GHZ,
					 true, true,
					 cfg->passive[1],
					 wl->max_channels_5,
					 &n_pactive_ch,
					 scan_type);
	cfg->active[1] =
		wlcore_scan_get_channels(wl,
					 channels,
					 n_channels,
					 n_ssids,
					 cfg->channels_5,
					 NL80211_BAND_5GHZ,
					 false, false,
					 cfg->passive[1] + cfg->dfs,
					 wl->max_channels_5,
					 &n_pactive_ch,
					 scan_type);

	/* 802.11j channels are not supported yet */
	cfg->passive[2] = 0;
	cfg->active[2] = 0;

	cfg->passive_active = n_pactive_ch;

	wl1271_debug(DEBUG_SCAN, "    2.4GHz: active %d passive %d",
		     cfg->active[0], cfg->passive[0]);
	wl1271_debug(DEBUG_SCAN, "    5GHz: active %d passive %d",
		     cfg->active[1], cfg->passive[1]);
	wl1271_debug(DEBUG_SCAN, "    DFS: %d", cfg->dfs);

	return  cfg->passive[0] || cfg->active[0] ||
		cfg->passive[1] || cfg->active[1] || cfg->dfs ||
		cfg->passive[2] || cfg->active[2];
}
EXPORT_SYMBOL_GPL(wlcore_set_scan_chan_params);

int wlcore_scan(struct wl1271 *wl, struct ieee80211_vif *vif,
		const u8 *ssid, size_t ssid_len,
		struct cfg80211_scan_request *req)
{
	struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);

	/*
	 * cfg80211 should guarantee that we don't get more channels
	 * than what we have registered.
	 */
	BUG_ON(req->n_channels > WL1271_MAX_CHANNELS);

	if (wl->scan.state != WL1271_SCAN_STATE_IDLE)
		return -EBUSY;

	wl->scan.state = WL1271_SCAN_STATE_2GHZ_ACTIVE;

	if (ssid_len && ssid) {
		wl->scan.ssid_len = ssid_len;
		memcpy(wl->scan.ssid, ssid, ssid_len);
	} else {
		wl->scan.ssid_len = 0;
	}

	wl->scan_wlvif = wlvif;
	wl->scan.req = req;
	memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));

	/* we assume failure so that timeout scenarios are handled correctly */
	wl->scan.failed = true;
	ieee80211_queue_delayed_work(wl->hw, &wl->scan_complete_work,
				     msecs_to_jiffies(WL1271_SCAN_TIMEOUT));

	wl->ops->scan_start(wl, wlvif, req);

	return 0;
}
/* Returns the scan type to be used or a negative value on error */
int
wlcore_scan_sched_scan_ssid_list(struct wl1271 *wl,
				 struct wl12xx_vif *wlvif,
				 struct cfg80211_sched_scan_request *req)
{
	struct wl1271_cmd_sched_scan_ssid_list *cmd = NULL;
	struct cfg80211_match_set *sets = req->match_sets;
	struct cfg80211_ssid *ssids = req->ssids;
	int ret = 0, type, i, j, n_match_ssids = 0;

	wl1271_debug((DEBUG_CMD | DEBUG_SCAN), "cmd sched scan ssid list");

	/* count the match sets that contain SSIDs */
	for (i = 0; i < req->n_match_sets; i++)
		if (sets[i].ssid.ssid_len > 0)
			n_match_ssids++;

	/* No filter, no ssids or only bcast ssid */
	if (!n_match_ssids &&
	    (!req->n_ssids ||
	     (req->n_ssids == 1 && req->ssids[0].ssid_len == 0))) {
		type = SCAN_SSID_FILTER_ANY;
		goto out;
	}

	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (!cmd) {
		ret = -ENOMEM;
		goto out;
	}

	cmd->role_id = wlvif->role_id;
	if (!n_match_ssids) {
		/* No filter, with ssids */
		type = SCAN_SSID_FILTER_DISABLED;

		for (i = 0; i < req->n_ssids; i++) {
			cmd->ssids[cmd->n_ssids].type = (ssids[i].ssid_len) ?
				SCAN_SSID_TYPE_HIDDEN : SCAN_SSID_TYPE_PUBLIC;
			cmd->ssids[cmd->n_ssids].len = ssids[i].ssid_len;
			memcpy(cmd->ssids[cmd->n_ssids].ssid, ssids[i].ssid,
			       ssids[i].ssid_len);
			cmd->n_ssids++;
		}
	} else {
		type = SCAN_SSID_FILTER_LIST;

		/* Add all SSIDs from the filters */
		for (i = 0; i < req->n_match_sets; i++) {
			/* ignore sets without SSIDs */
			if (!sets[i].ssid.ssid_len)
				continue;

			cmd->ssids[cmd->n_ssids].type = SCAN_SSID_TYPE_PUBLIC;
			cmd->ssids[cmd->n_ssids].len = sets[i].ssid.ssid_len;
			memcpy(cmd->ssids[cmd->n_ssids].ssid,
			       sets[i].ssid.ssid, sets[i].ssid.ssid_len);
			cmd->n_ssids++;
		}
		if ((req->n_ssids > 1) ||
		    (req->n_ssids == 1 && req->ssids[0].ssid_len > 0)) {
			/*
			 * Mark all the SSIDs passed in the SSID list as HIDDEN,
			 * so they're used in probe requests.
			 */
			for (i = 0; i < req->n_ssids; i++) {
				if (!req->ssids[i].ssid_len)
					continue;

				for (j = 0; j < cmd->n_ssids; j++)
					if ((req->ssids[i].ssid_len ==
					     cmd->ssids[j].len) &&
					    !memcmp(req->ssids[i].ssid,
						   cmd->ssids[j].ssid,
						   req->ssids[i].ssid_len)) {
						cmd->ssids[j].type =
							SCAN_SSID_TYPE_HIDDEN;
						break;
					}
				/* Fail if SSID isn't present in the filters */
				if (j == cmd->n_ssids) {
					ret = -EINVAL;
					goto out_free;
				}
			}
		}
	}

	ret = wl1271_cmd_send(wl, CMD_CONNECTION_SCAN_SSID_CFG, cmd,
			      sizeof(*cmd), 0);
	if (ret < 0) {
		wl1271_error("cmd sched scan ssid list failed");
		goto out_free;
	}

out_free:
	kfree(cmd);
out:
	if (ret < 0)
		return ret;
	return type;
}
EXPORT_SYMBOL_GPL(wlcore_scan_sched_scan_ssid_list);

void wlcore_scan_sched_scan_results(struct wl1271 *wl)
{
	wl1271_debug(DEBUG_SCAN, "got periodic scan results");

	ieee80211_sched_scan_results(wl->hw);
}
EXPORT_SYMBOL_GPL(wlcore_scan_sched_scan_results);
Commit	Line	Data
2b27bdcc	1	// SPDX-License-Identifier: GPL-2.0-only
34dd2aaa LC	2	/*
	3	* This file is part of wl1271
	4	*
	5	* Copyright (C) 2009-2010 Nokia Corporation
	6	*
	7	* Contact: Luciano Coelho <luciano.coelho@nokia.com>
34dd2aaa LC	8	*/
	9
	10	#include <linux/ieee80211.h>
fa2648a3	11	#include <linux/pm_runtime.h>
34dd2aaa	12
c31be25a	13	#include "wlcore.h"
0f4e3122	14	#include "debug.h"
00d20100 SL	15	#include "cmd.h"
	16	#include "scan.h"
	17	#include "acx.h"
af7fbb28	18	#include "tx.h"
34dd2aaa	19
c454f1d9 JO	20	void wl1271_scan_complete_work(struct work_struct *work)
c454f1d9 JO	21	{
78abd320 JO	22	struct delayed_work *dwork;
78abd320 JO	23	struct wl1271 *wl;
536129c8	24	struct wl12xx_vif *wlvif;
7947d3e0 AS	25	struct cfg80211_scan_info info = {
	26	.aborted = false,
	27	};
251c177f	28	int ret;
78abd320	29
61383412	30	dwork = to_delayed_work(work);
78abd320	31	wl = container_of(dwork, struct wl1271, scan_complete_work);
c454f1d9 JO	32
	33	wl1271_debug(DEBUG_SCAN, "Scanning complete");
	34
	35	mutex_lock(&wl->mutex);
52a2a375	36
4cc53383	37	if (unlikely(wl->state != WLCORE_STATE_ON))
24225b37 AN	38	goto out;
	39
	40	if (wl->scan.state == WL1271_SCAN_STATE_IDLE)
	41	goto out;
52a2a375	42
c50a2825	43	wlvif = wl->scan_wlvif;
536129c8	44
55df5afb AN	45	/*
	46	* Rearm the tx watchdog just before idling scan. This
	47	* prevents just-finished scans from triggering the watchdog
	48	*/
	49	wl12xx_rearm_tx_watchdog_locked(wl);
	50
c454f1d9	51	wl->scan.state = WL1271_SCAN_STATE_IDLE;
4a31c11c	52	memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
b739a42c	53	wl->scan.req = NULL;
c50a2825	54	wl->scan_wlvif = NULL;
78abd320	55
fa2648a3 TL	56	ret = pm_runtime_get_sync(wl->dev);
	57	if (ret < 0) {
	58	pm_runtime_put_noidle(wl->dev);
251c177f	59	goto out;
fa2648a3	60	}
251c177f	61
ba8447f6	62	if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
251c177f	63	/* restore hardware connection monitoring template */
83587505	64	wl1271_cmd_build_ap_probe_req(wl, wlvif, wlvif->probereq);
227e81e1 EP	65	}
227e81e1 EP	66
78abd320 JO	67	if (wl->scan.failed) {
78abd320 JO	68	wl1271_info("Scan completed due to error.");
baacb9ae	69	wl12xx_queue_recovery_work(wl);
78abd320	70	}
24225b37	71
6b70e7eb VG	72	wlcore_cmd_regdomain_config_locked(wl);
6b70e7eb VG	73
9b71578d TL	74	pm_runtime_mark_last_busy(wl->dev);
9b71578d TL	75	pm_runtime_put_autosuspend(wl->dev);
3ebbabea	76
7947d3e0	77	ieee80211_scan_completed(wl->hw, &info);
251c177f	78
24225b37	79	out:
b739a42c JO	80	mutex_unlock(&wl->mutex);
b739a42c JO	81
c454f1d9 JO	82	}
c454f1d9 JO	83
5d3a1603 ES	84	static void wlcore_started_vifs_iter(void data, u8 mac,
	85	struct ieee80211_vif *vif)
	86	{
e9687ea9 EP	87	struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
e9687ea9 EP	88	bool active = false;
5d3a1603 ES	89	int count = (int )data;
5d3a1603 ES	90
e9687ea9 EP	91	/*
	92	* count active interfaces according to interface type.
	93	* checking only bss_conf.idle is bad for some cases, e.g.
	94	* we don't want to count sta in p2p_find as active interface.
	95	*/
	96	switch (wlvif->bss_type) {
	97	case BSS_TYPE_STA_BSS:
	98	if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
	99	active = true;
	100	break;
	101
	102	case BSS_TYPE_AP_BSS:
	103	if (wlvif->wl->active_sta_count > 0)
	104	active = true;
	105	break;
	106
	107	default:
	108	break;
	109	}
	110
	111	if (active)
5d3a1603 ES	112	(*count)++;
	113	}
	114
	115	static int wlcore_count_started_vifs(struct wl1271 *wl)
	116	{
	117	int count = 0;
	118
	119	ieee80211_iterate_active_interfaces_atomic(wl->hw,
	120	IEEE80211_IFACE_ITER_RESUME_ALL,
	121	wlcore_started_vifs_iter, &count);
	122	return count;
	123	}
	124
95feadca	125	static int
512c5385 EP	126	wlcore_scan_get_channels(struct wl1271 *wl,
	127	struct ieee80211_channel *req_channels[],
	128	u32 n_channels,
	129	u32 n_ssids,
	130	struct conn_scan_ch_params *channels,
	131	u32 band, bool radar, bool passive,
	132	int start, int max_channels,
7c482c10 EP	133	u8 *n_pactive_ch,
7c482c10 EP	134	int scan_type)
95feadca	135	{
95feadca LC	136	int i, j;
95feadca LC	137	u32 flags;
512c5385	138	bool force_passive = !n_ssids;
7c482c10	139	u32 min_dwell_time_active, max_dwell_time_active;
6f407e5b ES	140	u32 dwell_time_passive, dwell_time_dfs;
6f407e5b ES	141
7c482c10 EP	142	/* configure dwell times according to scan type */
	143	if (scan_type == SCAN_TYPE_SEARCH) {
	144	struct conf_scan_settings *c = &wl->conf.scan;
5d3a1603 ES	145	bool active_vif_exists = !!wlcore_count_started_vifs(wl);
	146
	147	min_dwell_time_active = active_vif_exists ?
	148	c->min_dwell_time_active :
	149	c->min_dwell_time_active_long;
	150	max_dwell_time_active = active_vif_exists ?
	151	c->max_dwell_time_active :
	152	c->max_dwell_time_active_long;
7c482c10 EP	153	dwell_time_passive = c->dwell_time_passive;
	154	dwell_time_dfs = c->dwell_time_dfs;
	155	} else {
	156	struct conf_sched_scan_settings *c = &wl->conf.sched_scan;
	157	u32 delta_per_probe;
	158
57fbcce3	159	if (band == NL80211_BAND_5GHZ)
7c482c10 EP	160	delta_per_probe = c->dwell_time_delta_per_probe_5;
	161	else
	162	delta_per_probe = c->dwell_time_delta_per_probe;
	163
	164	min_dwell_time_active = c->base_dwell_time +
	165	n_ssids * c->num_probe_reqs * delta_per_probe;
	166
	167	max_dwell_time_active = min_dwell_time_active +
	168	c->max_dwell_time_delta;
	169	dwell_time_passive = c->dwell_time_passive;
	170	dwell_time_dfs = c->dwell_time_dfs;
	171	}
6f407e5b ES	172	min_dwell_time_active = DIV_ROUND_UP(min_dwell_time_active, 1000);
6f407e5b ES	173	max_dwell_time_active = DIV_ROUND_UP(max_dwell_time_active, 1000);
7c482c10 EP	174	dwell_time_passive = DIV_ROUND_UP(dwell_time_passive, 1000);
7c482c10 EP	175	dwell_time_dfs = DIV_ROUND_UP(dwell_time_dfs, 1000);
95feadca LC	176
95feadca LC	177	for (i = 0, j = start;
512c5385	178	i < n_channels && j < max_channels;
95feadca	179	i++) {
512c5385	180	flags = req_channels[i]->flags;
95feadca	181
66870b1c	182	if (force_passive)
8fe02e16	183	flags \|= IEEE80211_CHAN_NO_IR;
66870b1c	184
512c5385	185	if ((req_channels[i]->band == band) &&
2497a246	186	!(flags & IEEE80211_CHAN_DISABLED) &&
dd086821	187	(!!(flags & IEEE80211_CHAN_RADAR) == radar) &&
2497a246 LC	188	/* if radar is set, we ignore the passive flag */
2497a246 LC	189	(radar \|\|
8fe02e16	190	!!(flags & IEEE80211_CHAN_NO_IR) == passive)) {
50a66d7f	191	if (flags & IEEE80211_CHAN_RADAR) {
2497a246	192	channels[j].flags \|= SCAN_CHANNEL_FLAGS_DFS;
fea2a613	193
50a66d7f	194	channels[j].passive_duration =
6f407e5b	195	cpu_to_le16(dwell_time_dfs);
fea2a613	196	} else {
95feadca	197	channels[j].passive_duration =
6f407e5b	198	cpu_to_le16(dwell_time_passive);
95feadca	199	}
fea2a613 ES	200
fea2a613 ES	201	channels[j].min_duration =
6f407e5b	202	cpu_to_le16(min_dwell_time_active);
fea2a613	203	channels[j].max_duration =
6f407e5b	204	cpu_to_le16(max_dwell_time_active);
fea2a613	205
512c5385 EP	206	channels[j].tx_power_att = req_channels[i]->max_power;
512c5385 EP	207	channels[j].channel = req_channels[i]->hw_value;
95feadca	208
512c5385	209	if (n_pactive_ch &&
57fbcce3	210	(band == NL80211_BAND_2GHZ) &&
97511b15 VG	211	(channels[j].channel >= 12) &&
97511b15 VG	212	(channels[j].channel <= 14) &&
8fe02e16	213	(flags & IEEE80211_CHAN_NO_IR) &&
97511b15 VG	214	!force_passive) {
	215	/* pactive channels treated as DFS */
	216	channels[j].flags = SCAN_CHANNEL_FLAGS_DFS;
	217
	218	/*
	219	* n_pactive_ch is counted down from the end of
	220	* the passive channel list
	221	*/
	222	(*n_pactive_ch)++;
	223	wl1271_debug(DEBUG_SCAN, "n_pactive_ch = %d",
	224	*n_pactive_ch);
	225	}
	226
0fe72086 VG	227	wl1271_debug(DEBUG_SCAN, "freq %d, ch. %d, flags 0x%x, power %d, min/max_dwell %d/%d%s%s",
	228	req_channels[i]->center_freq,
	229	req_channels[i]->hw_value,
	230	req_channels[i]->flags,
	231	req_channels[i]->max_power,
	232	min_dwell_time_active,
	233	max_dwell_time_active,
	234	flags & IEEE80211_CHAN_RADAR ?
	235	", DFS" : "",
8fe02e16 LR	236	flags & IEEE80211_CHAN_NO_IR ?
8fe02e16 LR	237	", NO-IR" : "");
95feadca LC	238	j++;
	239	}
	240	}
	241
	242	return j - start;
	243	}
	244
78e28062	245	bool
512c5385	246	wlcore_set_scan_chan_params(struct wl1271 *wl,
78e28062	247	struct wlcore_scan_channels *cfg,
512c5385 EP	248	struct ieee80211_channel *channels[],
512c5385 EP	249	u32 n_channels,
7c482c10 EP	250	u32 n_ssids,
7c482c10 EP	251	int scan_type)
95feadca	252	{
97511b15 VG	253	u8 n_pactive_ch = 0;
97511b15 VG	254
95feadca	255	cfg->passive[0] =
512c5385 EP	256	wlcore_scan_get_channels(wl,
	257	channels,
	258	n_channels,
	259	n_ssids,
	260	cfg->channels_2,
57fbcce3	261	NL80211_BAND_2GHZ,
512c5385 EP	262	false, true, 0,
512c5385 EP	263	MAX_CHANNELS_2GHZ,
7c482c10 EP	264	&n_pactive_ch,
7c482c10 EP	265	scan_type);
95feadca	266	cfg->active[0] =
512c5385 EP	267	wlcore_scan_get_channels(wl,
	268	channels,
	269	n_channels,
	270	n_ssids,
	271	cfg->channels_2,
57fbcce3	272	NL80211_BAND_2GHZ,
512c5385 EP	273	false, false,
	274	cfg->passive[0],
	275	MAX_CHANNELS_2GHZ,
7c482c10 EP	276	&n_pactive_ch,
7c482c10 EP	277	scan_type);
95feadca	278	cfg->passive[1] =
512c5385 EP	279	wlcore_scan_get_channels(wl,
	280	channels,
	281	n_channels,
	282	n_ssids,
	283	cfg->channels_5,
57fbcce3	284	NL80211_BAND_5GHZ,
512c5385	285	false, true, 0,
0a1c720c	286	wl->max_channels_5,
7c482c10 EP	287	&n_pactive_ch,
7c482c10 EP	288	scan_type);
2497a246	289	cfg->dfs =
512c5385 EP	290	wlcore_scan_get_channels(wl,
	291	channels,
	292	n_channels,
	293	n_ssids,
	294	cfg->channels_5,
57fbcce3	295	NL80211_BAND_5GHZ,
512c5385 EP	296	true, true,
512c5385 EP	297	cfg->passive[1],
0a1c720c	298	wl->max_channels_5,
7c482c10 EP	299	&n_pactive_ch,
7c482c10 EP	300	scan_type);
2497a246	301	cfg->active[1] =
512c5385 EP	302	wlcore_scan_get_channels(wl,
	303	channels,
	304	n_channels,
	305	n_ssids,
	306	cfg->channels_5,
57fbcce3	307	NL80211_BAND_5GHZ,
512c5385 EP	308	false, false,
512c5385 EP	309	cfg->passive[1] + cfg->dfs,
0a1c720c	310	wl->max_channels_5,
7c482c10 EP	311	&n_pactive_ch,
7c482c10 EP	312	scan_type);
512c5385	313
d2c2bb9f LC	314	/* 802.11j channels are not supported yet */
	315	cfg->passive[2] = 0;
	316	cfg->active[2] = 0;
95feadca	317
78e28062	318	cfg->passive_active = n_pactive_ch;
97511b15	319
95feadca LC	320	wl1271_debug(DEBUG_SCAN, " 2.4GHz: active %d passive %d",
	321	cfg->active[0], cfg->passive[0]);
	322	wl1271_debug(DEBUG_SCAN, " 5GHz: active %d passive %d",
	323	cfg->active[1], cfg->passive[1]);
2497a246	324	wl1271_debug(DEBUG_SCAN, " DFS: %d", cfg->dfs);
95feadca	325
d2c2bb9f LC	326	return cfg->passive[0] \|\| cfg->active[0] \|\|
	327	cfg->passive[1] \|\| cfg->active[1] \|\| cfg->dfs \|\|
	328	cfg->passive[2] \|\| cfg->active[2];
95feadca	329	}
78e28062	330	EXPORT_SYMBOL_GPL(wlcore_set_scan_chan_params);
95feadca	331
78e28062 EP	332	int wlcore_scan(struct wl1271 wl, struct ieee80211_vif vif,
	333	const u8 *ssid, size_t ssid_len,
	334	struct cfg80211_scan_request *req)
	335	{
	336	struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
	337
	338	/*
	339	* cfg80211 should guarantee that we don't get more channels
	340	* than what we have registered.
	341	*/
	342	BUG_ON(req->n_channels > WL1271_MAX_CHANNELS);
	343
	344	if (wl->scan.state != WL1271_SCAN_STATE_IDLE)
	345	return -EBUSY;
	346
	347	wl->scan.state = WL1271_SCAN_STATE_2GHZ_ACTIVE;
	348
	349	if (ssid_len && ssid) {
	350	wl->scan.ssid_len = ssid_len;
	351	memcpy(wl->scan.ssid, ssid, ssid_len);
	352	} else {
	353	wl->scan.ssid_len = 0;
	354	}
	355
c50a2825	356	wl->scan_wlvif = wlvif;
78e28062 EP	357	wl->scan.req = req;
	358	memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
	359
	360	/* we assume failure so that timeout scenarios are handled correctly */
	361	wl->scan.failed = true;
	362	ieee80211_queue_delayed_work(wl->hw, &wl->scan_complete_work,
	363	msecs_to_jiffies(WL1271_SCAN_TIMEOUT));
	364
	365	wl->ops->scan_start(wl, wlvif, req);
	366
	367	return 0;
	368	}
fb55377b	369	/* Returns the scan type to be used or a negative value on error */
78e28062 EP	370	int
78e28062 EP	371	wlcore_scan_sched_scan_ssid_list(struct wl1271 *wl,
78f85f50	372	struct wl12xx_vif *wlvif,
f952079a LC	373	struct cfg80211_sched_scan_request *req)
	374	{
	375	struct wl1271_cmd_sched_scan_ssid_list *cmd = NULL;
fb55377b LC	376	struct cfg80211_match_set *sets = req->match_sets;
fb55377b LC	377	struct cfg80211_ssid *ssids = req->ssids;
20a33e52	378	int ret = 0, type, i, j, n_match_ssids = 0;
f952079a	379
0fe72086	380	wl1271_debug((DEBUG_CMD \| DEBUG_SCAN), "cmd sched scan ssid list");
f952079a	381
20a33e52 LC	382	/* count the match sets that contain SSIDs */
	383	for (i = 0; i < req->n_match_sets; i++)
	384	if (sets[i].ssid.ssid_len > 0)
	385	n_match_ssids++;
	386
fb55377b	387	/* No filter, no ssids or only bcast ssid */
20a33e52	388	if (!n_match_ssids &&
fb55377b LC	389	(!req->n_ssids \|\|
	390	(req->n_ssids == 1 && req->ssids[0].ssid_len == 0))) {
	391	type = SCAN_SSID_FILTER_ANY;
	392	goto out;
	393	}
	394
f952079a	395	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
fb55377b LC	396	if (!cmd) {
	397	ret = -ENOMEM;
	398	goto out;
	399	}
	400
8dc57430	401	cmd->role_id = wlvif->role_id;
20a33e52	402	if (!n_match_ssids) {
fb55377b LC	403	/* No filter, with ssids */
	404	type = SCAN_SSID_FILTER_DISABLED;
	405
	406	for (i = 0; i < req->n_ssids; i++) {
	407	cmd->ssids[cmd->n_ssids].type = (ssids[i].ssid_len) ?
	408	SCAN_SSID_TYPE_HIDDEN : SCAN_SSID_TYPE_PUBLIC;
	409	cmd->ssids[cmd->n_ssids].len = ssids[i].ssid_len;
	410	memcpy(cmd->ssids[cmd->n_ssids].ssid, ssids[i].ssid,
	411	ssids[i].ssid_len);
	412	cmd->n_ssids++;
	413	}
	414	} else {
	415	type = SCAN_SSID_FILTER_LIST;
f952079a	416
fb55377b LC	417	/* Add all SSIDs from the filters */
fb55377b LC	418	for (i = 0; i < req->n_match_sets; i++) {
20a33e52 LC	419	/* ignore sets without SSIDs */
	420	if (!sets[i].ssid.ssid_len)
	421	continue;
	422
bd4932b8	423	cmd->ssids[cmd->n_ssids].type = SCAN_SSID_TYPE_PUBLIC;
fb55377b LC	424	cmd->ssids[cmd->n_ssids].len = sets[i].ssid.ssid_len;
	425	memcpy(cmd->ssids[cmd->n_ssids].ssid,
	426	sets[i].ssid.ssid, sets[i].ssid.ssid_len);
	427	cmd->n_ssids++;
	428	}
	429	if ((req->n_ssids > 1) \|\|
	430	(req->n_ssids == 1 && req->ssids[0].ssid_len > 0)) {
	431	/*
	432	* Mark all the SSIDs passed in the SSID list as HIDDEN,
	433	* so they're used in probe requests.
	434	*/
	435	for (i = 0; i < req->n_ssids; i++) {
1b04b739 ES	436	if (!req->ssids[i].ssid_len)
	437	continue;
	438
fb55377b	439	for (j = 0; j < cmd->n_ssids; j++)
587cc286	440	if ((req->ssids[i].ssid_len ==
faae5aae	441	cmd->ssids[j].len) &&
587cc286	442	!memcmp(req->ssids[i].ssid,
fb55377b LC	443	cmd->ssids[j].ssid,
	444	req->ssids[i].ssid_len)) {
	445	cmd->ssids[j].type =
	446	SCAN_SSID_TYPE_HIDDEN;
	447	break;
	448	}
	449	/* Fail if SSID isn't present in the filters */
cc438fcc	450	if (j == cmd->n_ssids) {
fb55377b LC	451	ret = -EINVAL;
	452	goto out_free;
	453	}
	454	}
bd4932b8	455	}
f952079a LC	456	}
f952079a LC	457
f952079a LC	458	ret = wl1271_cmd_send(wl, CMD_CONNECTION_SCAN_SSID_CFG, cmd,
	459	sizeof(*cmd), 0);
	460	if (ret < 0) {
	461	wl1271_error("cmd sched scan ssid list failed");
fb55377b	462	goto out_free;
f952079a LC	463	}
f952079a LC	464
fb55377b	465	out_free:
f952079a	466	kfree(cmd);
fb55377b LC	467	out:
	468	if (ret < 0)
	469	return ret;
	470	return type;
f952079a	471	}
78e28062	472	EXPORT_SYMBOL_GPL(wlcore_scan_sched_scan_ssid_list);
95feadca	473
0b70078c	474	void wlcore_scan_sched_scan_results(struct wl1271 *wl)
95feadca LC	475	{
	476	wl1271_debug(DEBUG_SCAN, "got periodic scan results");
	477
	478	ieee80211_sched_scan_results(wl->hw);
	479	}
0b70078c	480	EXPORT_SYMBOL_GPL(wlcore_scan_sched_scan_results);