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- /*
- * This file is part of wl18xx
- *
- * Copyright (C) 2012 Texas Instruments. All rights reserved.
- *
- * 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 published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
- * 02110-1301 USA
- *
- */
- #include <linux/ieee80211.h>
- #include "scan.h"
- #include "../wlcore/debug.h"
- static void wl18xx_adjust_channels(struct wl18xx_cmd_scan_params *cmd,
- struct wlcore_scan_channels *cmd_channels)
- {
- memcpy(cmd->passive, cmd_channels->passive, sizeof(cmd->passive));
- memcpy(cmd->active, cmd_channels->active, sizeof(cmd->active));
- cmd->dfs = cmd_channels->dfs;
- cmd->passive_active = cmd_channels->passive_active;
- memcpy(cmd->channels_2, cmd_channels->channels_2,
- sizeof(cmd->channels_2));
- memcpy(cmd->channels_5, cmd_channels->channels_5,
- sizeof(cmd->channels_5));
- /* channels_4 are not supported, so no need to copy them */
- }
- static int wl18xx_scan_send(struct wl1271 *wl, struct wl12xx_vif *wlvif,
- struct cfg80211_scan_request *req)
- {
- struct wl18xx_cmd_scan_params *cmd;
- struct wlcore_scan_channels *cmd_channels = NULL;
- int ret;
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (!cmd) {
- ret = -ENOMEM;
- goto out;
- }
- /* scan on the dev role if the regular one is not started */
- if (wlcore_is_p2p_mgmt(wlvif))
- cmd->role_id = wlvif->dev_role_id;
- else
- cmd->role_id = wlvif->role_id;
- if (WARN_ON(cmd->role_id == WL12XX_INVALID_ROLE_ID)) {
- ret = -EINVAL;
- goto out;
- }
- cmd->scan_type = SCAN_TYPE_SEARCH;
- cmd->rssi_threshold = -127;
- cmd->snr_threshold = 0;
- cmd->bss_type = SCAN_BSS_TYPE_ANY;
- cmd->ssid_from_list = 0;
- cmd->filter = 0;
- cmd->add_broadcast = 0;
- cmd->urgency = 0;
- cmd->protect = 0;
- cmd->n_probe_reqs = wl->conf.scan.num_probe_reqs;
- cmd->terminate_after = 0;
- /* configure channels */
- WARN_ON(req->n_ssids > 1);
- cmd_channels = kzalloc(sizeof(*cmd_channels), GFP_KERNEL);
- if (!cmd_channels) {
- ret = -ENOMEM;
- goto out;
- }
- wlcore_set_scan_chan_params(wl, cmd_channels, req->channels,
- req->n_channels, req->n_ssids,
- SCAN_TYPE_SEARCH);
- wl18xx_adjust_channels(cmd, cmd_channels);
- /*
- * all the cycles params (except total cycles) should
- * remain 0 for normal scan
- */
- cmd->total_cycles = 1;
- if (req->no_cck)
- cmd->rate = WL18XX_SCAN_RATE_6;
- cmd->tag = WL1271_SCAN_DEFAULT_TAG;
- if (req->n_ssids) {
- cmd->ssid_len = req->ssids[0].ssid_len;
- memcpy(cmd->ssid, req->ssids[0].ssid, cmd->ssid_len);
- }
- /* TODO: per-band ies? */
- if (cmd->active[0]) {
- u8 band = IEEE80211_BAND_2GHZ;
- ret = wl12xx_cmd_build_probe_req(wl, wlvif,
- cmd->role_id, band,
- req->ssids ? req->ssids[0].ssid : NULL,
- req->ssids ? req->ssids[0].ssid_len : 0,
- req->ie,
- req->ie_len,
- NULL,
- 0,
- false);
- if (ret < 0) {
- wl1271_error("2.4GHz PROBE request template failed");
- goto out;
- }
- }
- if (cmd->active[1] || cmd->dfs) {
- u8 band = IEEE80211_BAND_5GHZ;
- ret = wl12xx_cmd_build_probe_req(wl, wlvif,
- cmd->role_id, band,
- req->ssids ? req->ssids[0].ssid : NULL,
- req->ssids ? req->ssids[0].ssid_len : 0,
- req->ie,
- req->ie_len,
- NULL,
- 0,
- false);
- if (ret < 0) {
- wl1271_error("5GHz PROBE request template failed");
- goto out;
- }
- }
- wl1271_dump(DEBUG_SCAN, "SCAN: ", cmd, sizeof(*cmd));
- ret = wl1271_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd), 0);
- if (ret < 0) {
- wl1271_error("SCAN failed");
- goto out;
- }
- out:
- kfree(cmd_channels);
- kfree(cmd);
- return ret;
- }
- void wl18xx_scan_completed(struct wl1271 *wl, struct wl12xx_vif *wlvif)
- {
- wl->scan.failed = false;
- cancel_delayed_work(&wl->scan_complete_work);
- ieee80211_queue_delayed_work(wl->hw, &wl->scan_complete_work,
- msecs_to_jiffies(0));
- }
- static
- int wl18xx_scan_sched_scan_config(struct wl1271 *wl,
- struct wl12xx_vif *wlvif,
- struct cfg80211_sched_scan_request *req,
- struct ieee80211_scan_ies *ies)
- {
- struct wl18xx_cmd_scan_params *cmd;
- struct wlcore_scan_channels *cmd_channels = NULL;
- struct conf_sched_scan_settings *c = &wl->conf.sched_scan;
- int ret;
- int filter_type;
- wl1271_debug(DEBUG_CMD, "cmd sched_scan scan config");
- filter_type = wlcore_scan_sched_scan_ssid_list(wl, wlvif, req);
- if (filter_type < 0)
- return filter_type;
- cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
- if (!cmd) {
- ret = -ENOMEM;
- goto out;
- }
- cmd->role_id = wlvif->role_id;
- if (WARN_ON(cmd->role_id == WL12XX_INVALID_ROLE_ID)) {
- ret = -EINVAL;
- goto out;
- }
- cmd->scan_type = SCAN_TYPE_PERIODIC;
- cmd->rssi_threshold = c->rssi_threshold;
- cmd->snr_threshold = c->snr_threshold;
- /* don't filter on BSS type */
- cmd->bss_type = SCAN_BSS_TYPE_ANY;
- cmd->ssid_from_list = 1;
- if (filter_type == SCAN_SSID_FILTER_LIST)
- cmd->filter = 1;
- cmd->add_broadcast = 0;
- cmd->urgency = 0;
- cmd->protect = 0;
- cmd->n_probe_reqs = c->num_probe_reqs;
- /* don't stop scanning automatically when something is found */
- cmd->terminate_after = 0;
- cmd_channels = kzalloc(sizeof(*cmd_channels), GFP_KERNEL);
- if (!cmd_channels) {
- ret = -ENOMEM;
- goto out;
- }
- /* configure channels */
- wlcore_set_scan_chan_params(wl, cmd_channels, req->channels,
- req->n_channels, req->n_ssids,
- SCAN_TYPE_PERIODIC);
- wl18xx_adjust_channels(cmd, cmd_channels);
- if (c->num_short_intervals && c->long_interval &&
- c->long_interval > req->scan_plans[0].interval * MSEC_PER_SEC) {
- cmd->short_cycles_msec =
- cpu_to_le16(req->scan_plans[0].interval * MSEC_PER_SEC);
- cmd->long_cycles_msec = cpu_to_le16(c->long_interval);
- cmd->short_cycles_count = c->num_short_intervals;
- } else {
- cmd->short_cycles_msec = 0;
- cmd->long_cycles_msec =
- cpu_to_le16(req->scan_plans[0].interval * MSEC_PER_SEC);
- cmd->short_cycles_count = 0;
- }
- wl1271_debug(DEBUG_SCAN, "short_interval: %d, long_interval: %d, num_short: %d",
- le16_to_cpu(cmd->short_cycles_msec),
- le16_to_cpu(cmd->long_cycles_msec),
- cmd->short_cycles_count);
- cmd->total_cycles = 0;
- cmd->tag = WL1271_SCAN_DEFAULT_TAG;
- /* create a PERIODIC_SCAN_REPORT_EVENT whenever we've got a match */
- cmd->report_threshold = 1;
- cmd->terminate_on_report = 0;
- if (cmd->active[0]) {
- u8 band = IEEE80211_BAND_2GHZ;
- ret = wl12xx_cmd_build_probe_req(wl, wlvif,
- cmd->role_id, band,
- req->ssids ? req->ssids[0].ssid : NULL,
- req->ssids ? req->ssids[0].ssid_len : 0,
- ies->ies[band],
- ies->len[band],
- ies->common_ies,
- ies->common_ie_len,
- true);
- if (ret < 0) {
- wl1271_error("2.4GHz PROBE request template failed");
- goto out;
- }
- }
- if (cmd->active[1] || cmd->dfs) {
- u8 band = IEEE80211_BAND_5GHZ;
- ret = wl12xx_cmd_build_probe_req(wl, wlvif,
- cmd->role_id, band,
- req->ssids ? req->ssids[0].ssid : NULL,
- req->ssids ? req->ssids[0].ssid_len : 0,
- ies->ies[band],
- ies->len[band],
- ies->common_ies,
- ies->common_ie_len,
- true);
- if (ret < 0) {
- wl1271_error("5GHz PROBE request template failed");
- goto out;
- }
- }
- wl1271_dump(DEBUG_SCAN, "SCAN: ", cmd, sizeof(*cmd));
- ret = wl1271_cmd_send(wl, CMD_SCAN, cmd, sizeof(*cmd), 0);
- if (ret < 0) {
- wl1271_error("SCAN failed");
- goto out;
- }
- out:
- kfree(cmd_channels);
- kfree(cmd);
- return ret;
- }
- int wl18xx_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif,
- struct cfg80211_sched_scan_request *req,
- struct ieee80211_scan_ies *ies)
- {
- return wl18xx_scan_sched_scan_config(wl, wlvif, req, ies);
- }
- static int __wl18xx_scan_stop(struct wl1271 *wl, struct wl12xx_vif *wlvif,
- u8 scan_type)
- {
- struct wl18xx_cmd_scan_stop *stop;
- int ret;
- wl1271_debug(DEBUG_CMD, "cmd periodic scan stop");
- stop = kzalloc(sizeof(*stop), GFP_KERNEL);
- if (!stop) {
- wl1271_error("failed to alloc memory to send sched scan stop");
- return -ENOMEM;
- }
- stop->role_id = wlvif->role_id;
- stop->scan_type = scan_type;
- ret = wl1271_cmd_send(wl, CMD_STOP_SCAN, stop, sizeof(*stop), 0);
- if (ret < 0) {
- wl1271_error("failed to send sched scan stop command");
- goto out_free;
- }
- out_free:
- kfree(stop);
- return ret;
- }
- void wl18xx_scan_sched_scan_stop(struct wl1271 *wl, struct wl12xx_vif *wlvif)
- {
- __wl18xx_scan_stop(wl, wlvif, SCAN_TYPE_PERIODIC);
- }
- int wl18xx_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif,
- struct cfg80211_scan_request *req)
- {
- return wl18xx_scan_send(wl, wlvif, req);
- }
- int wl18xx_scan_stop(struct wl1271 *wl, struct wl12xx_vif *wlvif)
- {
- return __wl18xx_scan_stop(wl, wlvif, SCAN_TYPE_SEARCH);
- }
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