822 lines
21 KiB
C
822 lines
21 KiB
C
/*
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* This file is part of wl1271
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*
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* Copyright (C) 2009-2010 Nokia Corporation
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*
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* Contact: Luciano Coelho <luciano.coelho@nokia.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include <linux/ieee80211.h>
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#include "wlcore.h"
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#include "debug.h"
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#include "cmd.h"
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#include "scan.h"
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#include "acx.h"
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#include "ps.h"
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#include "tx.h"
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void wl1271_scan_complete_work(struct work_struct *work)
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{
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struct delayed_work *dwork;
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struct wl1271 *wl;
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struct ieee80211_vif *vif;
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struct wl12xx_vif *wlvif;
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int ret;
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dwork = container_of(work, struct delayed_work, work);
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wl = container_of(dwork, struct wl1271, scan_complete_work);
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wl1271_debug(DEBUG_SCAN, "Scanning complete");
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mutex_lock(&wl->mutex);
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if (unlikely(wl->state != WLCORE_STATE_ON))
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goto out;
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if (wl->scan.state == WL1271_SCAN_STATE_IDLE)
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goto out;
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vif = wl->scan_vif;
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wlvif = wl12xx_vif_to_data(vif);
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/*
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* Rearm the tx watchdog just before idling scan. This
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* prevents just-finished scans from triggering the watchdog
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*/
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wl12xx_rearm_tx_watchdog_locked(wl);
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wl->scan.state = WL1271_SCAN_STATE_IDLE;
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memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
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wl->scan.req = NULL;
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wl->scan_vif = NULL;
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ret = wl1271_ps_elp_wakeup(wl);
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if (ret < 0)
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goto out;
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if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
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/* restore hardware connection monitoring template */
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wl1271_cmd_build_ap_probe_req(wl, wlvif, wlvif->probereq);
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}
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wl1271_ps_elp_sleep(wl);
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if (wl->scan.failed) {
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wl1271_info("Scan completed due to error.");
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wl12xx_queue_recovery_work(wl);
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}
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ieee80211_scan_completed(wl->hw, false);
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out:
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mutex_unlock(&wl->mutex);
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}
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static int wl1271_get_scan_channels(struct wl1271 *wl,
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struct cfg80211_scan_request *req,
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struct basic_scan_channel_params *channels,
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enum ieee80211_band band, bool passive)
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{
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struct conf_scan_settings *c = &wl->conf.scan;
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int i, j;
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u32 flags;
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for (i = 0, j = 0;
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i < req->n_channels && j < WL1271_SCAN_MAX_CHANNELS;
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i++) {
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flags = req->channels[i]->flags;
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if (!test_bit(i, wl->scan.scanned_ch) &&
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!(flags & IEEE80211_CHAN_DISABLED) &&
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(req->channels[i]->band == band) &&
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/*
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* In passive scans, we scan all remaining
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* channels, even if not marked as such.
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* In active scans, we only scan channels not
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* marked as passive.
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*/
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(passive || !(flags & IEEE80211_CHAN_PASSIVE_SCAN))) {
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wl1271_debug(DEBUG_SCAN, "band %d, center_freq %d ",
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req->channels[i]->band,
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req->channels[i]->center_freq);
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wl1271_debug(DEBUG_SCAN, "hw_value %d, flags %X",
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req->channels[i]->hw_value,
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req->channels[i]->flags);
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wl1271_debug(DEBUG_SCAN,
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"max_antenna_gain %d, max_power %d",
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req->channels[i]->max_antenna_gain,
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req->channels[i]->max_power);
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wl1271_debug(DEBUG_SCAN, "beacon_found %d",
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req->channels[i]->beacon_found);
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if (!passive) {
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channels[j].min_duration =
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cpu_to_le32(c->min_dwell_time_active);
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channels[j].max_duration =
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cpu_to_le32(c->max_dwell_time_active);
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} else {
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channels[j].min_duration =
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cpu_to_le32(c->min_dwell_time_passive);
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channels[j].max_duration =
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cpu_to_le32(c->max_dwell_time_passive);
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}
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channels[j].early_termination = 0;
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channels[j].tx_power_att = req->channels[i]->max_power;
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channels[j].channel = req->channels[i]->hw_value;
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memset(&channels[j].bssid_lsb, 0xff, 4);
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memset(&channels[j].bssid_msb, 0xff, 2);
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/* Mark the channels we already used */
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set_bit(i, wl->scan.scanned_ch);
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j++;
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}
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}
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return j;
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}
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#define WL1271_NOTHING_TO_SCAN 1
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static int wl1271_scan_send(struct wl1271 *wl, struct ieee80211_vif *vif,
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enum ieee80211_band band,
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bool passive, u32 basic_rate)
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{
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struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
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struct wl1271_cmd_scan *cmd;
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struct wl1271_cmd_trigger_scan_to *trigger;
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int ret;
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u16 scan_options = 0;
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/* skip active scans if we don't have SSIDs */
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if (!passive && wl->scan.req->n_ssids == 0)
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return WL1271_NOTHING_TO_SCAN;
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
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trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
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if (!cmd || !trigger) {
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ret = -ENOMEM;
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goto out;
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}
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if (wl->conf.scan.split_scan_timeout)
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scan_options |= WL1271_SCAN_OPT_SPLIT_SCAN;
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if (passive)
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scan_options |= WL1271_SCAN_OPT_PASSIVE;
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cmd->params.role_id = wlvif->role_id;
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if (WARN_ON(cmd->params.role_id == WL12XX_INVALID_ROLE_ID)) {
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ret = -EINVAL;
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goto out;
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}
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cmd->params.scan_options = cpu_to_le16(scan_options);
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cmd->params.n_ch = wl1271_get_scan_channels(wl, wl->scan.req,
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cmd->channels,
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band, passive);
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if (cmd->params.n_ch == 0) {
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ret = WL1271_NOTHING_TO_SCAN;
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goto out;
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}
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cmd->params.tx_rate = cpu_to_le32(basic_rate);
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cmd->params.n_probe_reqs = wl->conf.scan.num_probe_reqs;
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cmd->params.tid_trigger = CONF_TX_AC_ANY_TID;
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cmd->params.scan_tag = WL1271_SCAN_DEFAULT_TAG;
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if (band == IEEE80211_BAND_2GHZ)
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cmd->params.band = WL1271_SCAN_BAND_2_4_GHZ;
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else
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cmd->params.band = WL1271_SCAN_BAND_5_GHZ;
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if (wl->scan.ssid_len && wl->scan.ssid) {
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cmd->params.ssid_len = wl->scan.ssid_len;
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memcpy(cmd->params.ssid, wl->scan.ssid, wl->scan.ssid_len);
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}
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memcpy(cmd->addr, vif->addr, ETH_ALEN);
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ret = wl12xx_cmd_build_probe_req(wl, wlvif,
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cmd->params.role_id, band,
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wl->scan.ssid, wl->scan.ssid_len,
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wl->scan.req->ie,
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wl->scan.req->ie_len, false);
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if (ret < 0) {
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wl1271_error("PROBE request template failed");
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goto out;
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}
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trigger->timeout = cpu_to_le32(wl->conf.scan.split_scan_timeout);
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ret = wl1271_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
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sizeof(*trigger), 0);
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if (ret < 0) {
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wl1271_error("trigger scan to failed for hw scan");
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goto out;
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}
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wl1271_dump(DEBUG_SCAN, "SCAN: ", cmd, sizeof(*cmd));
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ret = wl1271_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd), 0);
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if (ret < 0) {
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wl1271_error("SCAN failed");
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goto out;
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}
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out:
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kfree(cmd);
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kfree(trigger);
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return ret;
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}
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void wl1271_scan_stm(struct wl1271 *wl, struct ieee80211_vif *vif)
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{
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struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
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int ret = 0;
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enum ieee80211_band band;
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u32 rate, mask;
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switch (wl->scan.state) {
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case WL1271_SCAN_STATE_IDLE:
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break;
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case WL1271_SCAN_STATE_2GHZ_ACTIVE:
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band = IEEE80211_BAND_2GHZ;
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mask = wlvif->bitrate_masks[band];
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if (wl->scan.req->no_cck) {
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mask &= ~CONF_TX_CCK_RATES;
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if (!mask)
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mask = CONF_TX_RATE_MASK_BASIC_P2P;
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}
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rate = wl1271_tx_min_rate_get(wl, mask);
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ret = wl1271_scan_send(wl, vif, band, false, rate);
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if (ret == WL1271_NOTHING_TO_SCAN) {
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wl->scan.state = WL1271_SCAN_STATE_2GHZ_PASSIVE;
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wl1271_scan_stm(wl, vif);
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}
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break;
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case WL1271_SCAN_STATE_2GHZ_PASSIVE:
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band = IEEE80211_BAND_2GHZ;
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mask = wlvif->bitrate_masks[band];
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if (wl->scan.req->no_cck) {
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mask &= ~CONF_TX_CCK_RATES;
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if (!mask)
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mask = CONF_TX_RATE_MASK_BASIC_P2P;
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}
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rate = wl1271_tx_min_rate_get(wl, mask);
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ret = wl1271_scan_send(wl, vif, band, true, rate);
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if (ret == WL1271_NOTHING_TO_SCAN) {
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if (wl->enable_11a)
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wl->scan.state = WL1271_SCAN_STATE_5GHZ_ACTIVE;
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else
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wl->scan.state = WL1271_SCAN_STATE_DONE;
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wl1271_scan_stm(wl, vif);
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}
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break;
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case WL1271_SCAN_STATE_5GHZ_ACTIVE:
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band = IEEE80211_BAND_5GHZ;
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rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);
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ret = wl1271_scan_send(wl, vif, band, false, rate);
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if (ret == WL1271_NOTHING_TO_SCAN) {
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wl->scan.state = WL1271_SCAN_STATE_5GHZ_PASSIVE;
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wl1271_scan_stm(wl, vif);
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}
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break;
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case WL1271_SCAN_STATE_5GHZ_PASSIVE:
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band = IEEE80211_BAND_5GHZ;
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rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);
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ret = wl1271_scan_send(wl, vif, band, true, rate);
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if (ret == WL1271_NOTHING_TO_SCAN) {
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wl->scan.state = WL1271_SCAN_STATE_DONE;
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wl1271_scan_stm(wl, vif);
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}
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break;
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case WL1271_SCAN_STATE_DONE:
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wl->scan.failed = false;
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cancel_delayed_work(&wl->scan_complete_work);
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ieee80211_queue_delayed_work(wl->hw, &wl->scan_complete_work,
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msecs_to_jiffies(0));
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break;
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default:
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wl1271_error("invalid scan state");
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break;
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}
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if (ret < 0) {
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cancel_delayed_work(&wl->scan_complete_work);
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ieee80211_queue_delayed_work(wl->hw, &wl->scan_complete_work,
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msecs_to_jiffies(0));
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}
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}
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int wl1271_scan(struct wl1271 *wl, struct ieee80211_vif *vif,
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const u8 *ssid, size_t ssid_len,
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struct cfg80211_scan_request *req)
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{
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/*
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* cfg80211 should guarantee that we don't get more channels
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* than what we have registered.
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*/
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BUG_ON(req->n_channels > WL1271_MAX_CHANNELS);
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if (wl->scan.state != WL1271_SCAN_STATE_IDLE)
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return -EBUSY;
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wl->scan.state = WL1271_SCAN_STATE_2GHZ_ACTIVE;
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if (ssid_len && ssid) {
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wl->scan.ssid_len = ssid_len;
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memcpy(wl->scan.ssid, ssid, ssid_len);
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} else {
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wl->scan.ssid_len = 0;
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}
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wl->scan_vif = vif;
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wl->scan.req = req;
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memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
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/* we assume failure so that timeout scenarios are handled correctly */
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wl->scan.failed = true;
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ieee80211_queue_delayed_work(wl->hw, &wl->scan_complete_work,
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msecs_to_jiffies(WL1271_SCAN_TIMEOUT));
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wl1271_scan_stm(wl, vif);
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return 0;
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}
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int wl1271_scan_stop(struct wl1271 *wl)
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{
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struct wl1271_cmd_header *cmd = NULL;
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int ret = 0;
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if (WARN_ON(wl->scan.state == WL1271_SCAN_STATE_IDLE))
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return -EINVAL;
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wl1271_debug(DEBUG_CMD, "cmd scan stop");
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cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
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if (!cmd) {
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ret = -ENOMEM;
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goto out;
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}
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ret = wl1271_cmd_send(wl, CMD_STOP_SCAN, cmd,
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sizeof(*cmd), 0);
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if (ret < 0) {
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wl1271_error("cmd stop_scan failed");
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goto out;
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}
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out:
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kfree(cmd);
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return ret;
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}
|
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|
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static int
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wl1271_scan_get_sched_scan_channels(struct wl1271 *wl,
|
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struct cfg80211_sched_scan_request *req,
|
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struct conn_scan_ch_params *channels,
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u32 band, bool radar, bool passive,
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int start, int max_channels,
|
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u8 *n_pactive_ch)
|
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{
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struct conf_sched_scan_settings *c = &wl->conf.sched_scan;
|
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int i, j;
|
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u32 flags;
|
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bool force_passive = !req->n_ssids;
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u32 min_dwell_time_active, max_dwell_time_active, delta_per_probe;
|
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u32 dwell_time_passive, dwell_time_dfs;
|
|
|
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if (band == IEEE80211_BAND_5GHZ)
|
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delta_per_probe = c->dwell_time_delta_per_probe_5;
|
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else
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delta_per_probe = c->dwell_time_delta_per_probe;
|
|
|
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min_dwell_time_active = c->base_dwell_time +
|
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req->n_ssids * c->num_probe_reqs * delta_per_probe;
|
|
|
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max_dwell_time_active = min_dwell_time_active + c->max_dwell_time_delta;
|
|
|
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min_dwell_time_active = DIV_ROUND_UP(min_dwell_time_active, 1000);
|
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max_dwell_time_active = DIV_ROUND_UP(max_dwell_time_active, 1000);
|
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dwell_time_passive = DIV_ROUND_UP(c->dwell_time_passive, 1000);
|
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dwell_time_dfs = DIV_ROUND_UP(c->dwell_time_dfs, 1000);
|
|
|
|
for (i = 0, j = start;
|
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i < req->n_channels && j < max_channels;
|
|
i++) {
|
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flags = req->channels[i]->flags;
|
|
|
|
if (force_passive)
|
|
flags |= IEEE80211_CHAN_PASSIVE_SCAN;
|
|
|
|
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 ||
|
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!!(flags & IEEE80211_CHAN_PASSIVE_SCAN) == passive)) {
|
|
wl1271_debug(DEBUG_SCAN, "band %d, center_freq %d ",
|
|
req->channels[i]->band,
|
|
req->channels[i]->center_freq);
|
|
wl1271_debug(DEBUG_SCAN, "hw_value %d, flags %X",
|
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req->channels[i]->hw_value,
|
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req->channels[i]->flags);
|
|
wl1271_debug(DEBUG_SCAN, "max_power %d",
|
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req->channels[i]->max_power);
|
|
wl1271_debug(DEBUG_SCAN, "min_dwell_time %d max dwell time %d",
|
|
min_dwell_time_active,
|
|
max_dwell_time_active);
|
|
|
|
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 ((band == IEEE80211_BAND_2GHZ) &&
|
|
(channels[j].channel >= 12) &&
|
|
(channels[j].channel <= 14) &&
|
|
(flags & IEEE80211_CHAN_PASSIVE_SCAN) &&
|
|
!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);
|
|
}
|
|
|
|
j++;
|
|
}
|
|
}
|
|
|
|
return j - start;
|
|
}
|
|
|
|
static bool
|
|
wl1271_scan_sched_scan_channels(struct wl1271 *wl,
|
|
struct cfg80211_sched_scan_request *req,
|
|
struct wl1271_cmd_sched_scan_config *cfg)
|
|
{
|
|
u8 n_pactive_ch = 0;
|
|
|
|
cfg->passive[0] =
|
|
wl1271_scan_get_sched_scan_channels(wl, req, cfg->channels_2,
|
|
IEEE80211_BAND_2GHZ,
|
|
false, true, 0,
|
|
MAX_CHANNELS_2GHZ,
|
|
&n_pactive_ch);
|
|
cfg->active[0] =
|
|
wl1271_scan_get_sched_scan_channels(wl, req, cfg->channels_2,
|
|
IEEE80211_BAND_2GHZ,
|
|
false, false,
|
|
cfg->passive[0],
|
|
MAX_CHANNELS_2GHZ,
|
|
&n_pactive_ch);
|
|
cfg->passive[1] =
|
|
wl1271_scan_get_sched_scan_channels(wl, req, cfg->channels_5,
|
|
IEEE80211_BAND_5GHZ,
|
|
false, true, 0,
|
|
MAX_CHANNELS_5GHZ,
|
|
&n_pactive_ch);
|
|
cfg->dfs =
|
|
wl1271_scan_get_sched_scan_channels(wl, req, cfg->channels_5,
|
|
IEEE80211_BAND_5GHZ,
|
|
true, true,
|
|
cfg->passive[1],
|
|
MAX_CHANNELS_5GHZ,
|
|
&n_pactive_ch);
|
|
cfg->active[1] =
|
|
wl1271_scan_get_sched_scan_channels(wl, req, cfg->channels_5,
|
|
IEEE80211_BAND_5GHZ,
|
|
false, false,
|
|
cfg->passive[1] + cfg->dfs,
|
|
MAX_CHANNELS_5GHZ,
|
|
&n_pactive_ch);
|
|
/* 802.11j channels are not supported yet */
|
|
cfg->passive[2] = 0;
|
|
cfg->active[2] = 0;
|
|
|
|
cfg->n_pactive_ch = 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];
|
|
}
|
|
|
|
/* Returns the scan type to be used or a negative value on error */
|
|
static int
|
|
wl12xx_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, "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;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
wl1271_dump(DEBUG_SCAN, "SSID_LIST: ", cmd, sizeof(*cmd));
|
|
|
|
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;
|
|
}
|
|
|
|
int wl1271_scan_sched_scan_config(struct wl1271 *wl,
|
|
struct wl12xx_vif *wlvif,
|
|
struct cfg80211_sched_scan_request *req,
|
|
struct ieee80211_sched_scan_ies *ies)
|
|
{
|
|
struct wl1271_cmd_sched_scan_config *cfg = NULL;
|
|
struct conf_sched_scan_settings *c = &wl->conf.sched_scan;
|
|
int i, ret;
|
|
bool force_passive = !req->n_ssids;
|
|
|
|
wl1271_debug(DEBUG_CMD, "cmd sched_scan scan config");
|
|
|
|
cfg = kzalloc(sizeof(*cfg), GFP_KERNEL);
|
|
if (!cfg)
|
|
return -ENOMEM;
|
|
|
|
cfg->role_id = wlvif->role_id;
|
|
cfg->rssi_threshold = c->rssi_threshold;
|
|
cfg->snr_threshold = c->snr_threshold;
|
|
cfg->n_probe_reqs = c->num_probe_reqs;
|
|
/* cycles set to 0 it means infinite (until manually stopped) */
|
|
cfg->cycles = 0;
|
|
/* report APs when at least 1 is found */
|
|
cfg->report_after = 1;
|
|
/* don't stop scanning automatically when something is found */
|
|
cfg->terminate = 0;
|
|
cfg->tag = WL1271_SCAN_DEFAULT_TAG;
|
|
/* don't filter on BSS type */
|
|
cfg->bss_type = SCAN_BSS_TYPE_ANY;
|
|
/* currently NL80211 supports only a single interval */
|
|
for (i = 0; i < SCAN_MAX_CYCLE_INTERVALS; i++)
|
|
cfg->intervals[i] = cpu_to_le32(req->interval);
|
|
|
|
cfg->ssid_len = 0;
|
|
ret = wl12xx_scan_sched_scan_ssid_list(wl, wlvif, req);
|
|
if (ret < 0)
|
|
goto out;
|
|
|
|
cfg->filter_type = ret;
|
|
|
|
wl1271_debug(DEBUG_SCAN, "filter_type = %d", cfg->filter_type);
|
|
|
|
if (!wl1271_scan_sched_scan_channels(wl, req, cfg)) {
|
|
wl1271_error("scan channel list is empty");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (!force_passive && cfg->active[0]) {
|
|
u8 band = IEEE80211_BAND_2GHZ;
|
|
ret = wl12xx_cmd_build_probe_req(wl, wlvif,
|
|
wlvif->role_id, band,
|
|
req->ssids[0].ssid,
|
|
req->ssids[0].ssid_len,
|
|
ies->ie[band],
|
|
ies->len[band], true);
|
|
if (ret < 0) {
|
|
wl1271_error("2.4GHz PROBE request template failed");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (!force_passive && cfg->active[1]) {
|
|
u8 band = IEEE80211_BAND_5GHZ;
|
|
ret = wl12xx_cmd_build_probe_req(wl, wlvif,
|
|
wlvif->role_id, band,
|
|
req->ssids[0].ssid,
|
|
req->ssids[0].ssid_len,
|
|
ies->ie[band],
|
|
ies->len[band], true);
|
|
if (ret < 0) {
|
|
wl1271_error("5GHz PROBE request template failed");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
wl1271_dump(DEBUG_SCAN, "SCAN_CFG: ", cfg, sizeof(*cfg));
|
|
|
|
ret = wl1271_cmd_send(wl, CMD_CONNECTION_SCAN_CFG, cfg,
|
|
sizeof(*cfg), 0);
|
|
if (ret < 0) {
|
|
wl1271_error("SCAN configuration failed");
|
|
goto out;
|
|
}
|
|
out:
|
|
kfree(cfg);
|
|
return ret;
|
|
}
|
|
|
|
int wl1271_scan_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif)
|
|
{
|
|
struct wl1271_cmd_sched_scan_start *start;
|
|
int ret = 0;
|
|
|
|
wl1271_debug(DEBUG_CMD, "cmd periodic scan start");
|
|
|
|
if (wlvif->bss_type != BSS_TYPE_STA_BSS)
|
|
return -EOPNOTSUPP;
|
|
|
|
if ((wl->quirks & WLCORE_QUIRK_NO_SCHED_SCAN_WHILE_CONN) &&
|
|
test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags))
|
|
return -EBUSY;
|
|
|
|
start = kzalloc(sizeof(*start), GFP_KERNEL);
|
|
if (!start)
|
|
return -ENOMEM;
|
|
|
|
start->role_id = wlvif->role_id;
|
|
start->tag = WL1271_SCAN_DEFAULT_TAG;
|
|
|
|
ret = wl1271_cmd_send(wl, CMD_START_PERIODIC_SCAN, start,
|
|
sizeof(*start), 0);
|
|
if (ret < 0) {
|
|
wl1271_error("failed to send scan start command");
|
|
goto out_free;
|
|
}
|
|
|
|
out_free:
|
|
kfree(start);
|
|
return ret;
|
|
}
|
|
|
|
void wl1271_scan_sched_scan_results(struct wl1271 *wl)
|
|
{
|
|
wl1271_debug(DEBUG_SCAN, "got periodic scan results");
|
|
|
|
ieee80211_sched_scan_results(wl->hw);
|
|
}
|
|
|
|
void wl1271_scan_sched_scan_stop(struct wl1271 *wl, struct wl12xx_vif *wlvif)
|
|
{
|
|
struct wl1271_cmd_sched_scan_stop *stop;
|
|
int ret = 0;
|
|
|
|
wl1271_debug(DEBUG_CMD, "cmd periodic scan stop");
|
|
|
|
/* FIXME: what to do if alloc'ing to stop fails? */
|
|
stop = kzalloc(sizeof(*stop), GFP_KERNEL);
|
|
if (!stop) {
|
|
wl1271_error("failed to alloc memory to send sched scan stop");
|
|
return;
|
|
}
|
|
|
|
stop->role_id = wlvif->role_id;
|
|
stop->tag = WL1271_SCAN_DEFAULT_TAG;
|
|
|
|
ret = wl1271_cmd_send(wl, CMD_STOP_PERIODIC_SCAN, stop,
|
|
sizeof(*stop), 0);
|
|
if (ret < 0) {
|
|
wl1271_error("failed to send sched scan stop command");
|
|
goto out_free;
|
|
}
|
|
|
|
out_free:
|
|
kfree(stop);
|
|
}
|