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337 lines
8.1 KiB
337 lines
8.1 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* This file is part of wl18xx |
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* |
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* Copyright (C) 2012 Texas Instruments. All rights reserved. |
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*/ |
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#include <linux/ieee80211.h> |
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#include "scan.h" |
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#include "../wlcore/debug.h" |
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static void wl18xx_adjust_channels(struct wl18xx_cmd_scan_params *cmd, |
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struct wlcore_scan_channels *cmd_channels) |
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{ |
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memcpy(cmd->passive, cmd_channels->passive, sizeof(cmd->passive)); |
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memcpy(cmd->active, cmd_channels->active, sizeof(cmd->active)); |
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cmd->dfs = cmd_channels->dfs; |
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cmd->passive_active = cmd_channels->passive_active; |
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memcpy(cmd->channels_2, cmd_channels->channels_2, |
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sizeof(cmd->channels_2)); |
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memcpy(cmd->channels_5, cmd_channels->channels_5, |
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sizeof(cmd->channels_5)); |
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/* channels_4 are not supported, so no need to copy them */ |
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} |
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static int wl18xx_scan_send(struct wl1271 *wl, struct wl12xx_vif *wlvif, |
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struct cfg80211_scan_request *req) |
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{ |
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struct wl18xx_cmd_scan_params *cmd; |
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struct wlcore_scan_channels *cmd_channels = NULL; |
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int ret; |
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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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/* scan on the dev role if the regular one is not started */ |
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if (wlcore_is_p2p_mgmt(wlvif)) |
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cmd->role_id = wlvif->dev_role_id; |
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else |
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cmd->role_id = wlvif->role_id; |
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if (WARN_ON(cmd->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->scan_type = SCAN_TYPE_SEARCH; |
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cmd->rssi_threshold = -127; |
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cmd->snr_threshold = 0; |
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cmd->bss_type = SCAN_BSS_TYPE_ANY; |
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cmd->ssid_from_list = 0; |
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cmd->filter = 0; |
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cmd->add_broadcast = 0; |
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cmd->urgency = 0; |
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cmd->protect = 0; |
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cmd->n_probe_reqs = wl->conf.scan.num_probe_reqs; |
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cmd->terminate_after = 0; |
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/* configure channels */ |
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WARN_ON(req->n_ssids > 1); |
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cmd_channels = kzalloc(sizeof(*cmd_channels), GFP_KERNEL); |
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if (!cmd_channels) { |
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ret = -ENOMEM; |
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goto out; |
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} |
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wlcore_set_scan_chan_params(wl, cmd_channels, req->channels, |
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req->n_channels, req->n_ssids, |
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SCAN_TYPE_SEARCH); |
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wl18xx_adjust_channels(cmd, cmd_channels); |
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/* |
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* all the cycles params (except total cycles) should |
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* remain 0 for normal scan |
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*/ |
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cmd->total_cycles = 1; |
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if (req->no_cck) |
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cmd->rate = WL18XX_SCAN_RATE_6; |
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cmd->tag = WL1271_SCAN_DEFAULT_TAG; |
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if (req->n_ssids) { |
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cmd->ssid_len = req->ssids[0].ssid_len; |
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memcpy(cmd->ssid, req->ssids[0].ssid, cmd->ssid_len); |
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} |
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/* TODO: per-band ies? */ |
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if (cmd->active[0]) { |
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u8 band = NL80211_BAND_2GHZ; |
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ret = wl12xx_cmd_build_probe_req(wl, wlvif, |
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cmd->role_id, band, |
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req->ssids ? req->ssids[0].ssid : NULL, |
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req->ssids ? req->ssids[0].ssid_len : 0, |
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req->ie, |
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req->ie_len, |
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NULL, |
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0, |
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false); |
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if (ret < 0) { |
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wl1271_error("2.4GHz PROBE request template failed"); |
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goto out; |
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} |
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} |
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if (cmd->active[1] || cmd->dfs) { |
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u8 band = NL80211_BAND_5GHZ; |
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ret = wl12xx_cmd_build_probe_req(wl, wlvif, |
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cmd->role_id, band, |
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req->ssids ? req->ssids[0].ssid : NULL, |
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req->ssids ? req->ssids[0].ssid_len : 0, |
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req->ie, |
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req->ie_len, |
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NULL, |
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0, |
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false); |
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if (ret < 0) { |
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wl1271_error("5GHz PROBE request template failed"); |
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goto out; |
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} |
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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_channels); |
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kfree(cmd); |
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return ret; |
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} |
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void wl18xx_scan_completed(struct wl1271 *wl, struct wl12xx_vif *wlvif) |
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{ |
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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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} |
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static |
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int wl18xx_scan_sched_scan_config(struct wl1271 *wl, |
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struct wl12xx_vif *wlvif, |
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struct cfg80211_sched_scan_request *req, |
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struct ieee80211_scan_ies *ies) |
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{ |
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struct wl18xx_cmd_scan_params *cmd; |
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struct wlcore_scan_channels *cmd_channels = NULL; |
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struct conf_sched_scan_settings *c = &wl->conf.sched_scan; |
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int ret; |
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int filter_type; |
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wl1271_debug(DEBUG_CMD, "cmd sched_scan scan config"); |
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filter_type = wlcore_scan_sched_scan_ssid_list(wl, wlvif, req); |
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if (filter_type < 0) |
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return filter_type; |
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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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cmd->role_id = wlvif->role_id; |
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if (WARN_ON(cmd->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->scan_type = SCAN_TYPE_PERIODIC; |
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cmd->rssi_threshold = c->rssi_threshold; |
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cmd->snr_threshold = c->snr_threshold; |
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/* don't filter on BSS type */ |
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cmd->bss_type = SCAN_BSS_TYPE_ANY; |
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cmd->ssid_from_list = 1; |
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if (filter_type == SCAN_SSID_FILTER_LIST) |
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cmd->filter = 1; |
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cmd->add_broadcast = 0; |
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cmd->urgency = 0; |
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cmd->protect = 0; |
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cmd->n_probe_reqs = c->num_probe_reqs; |
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/* don't stop scanning automatically when something is found */ |
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cmd->terminate_after = 0; |
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cmd_channels = kzalloc(sizeof(*cmd_channels), GFP_KERNEL); |
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if (!cmd_channels) { |
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ret = -ENOMEM; |
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goto out; |
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} |
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/* configure channels */ |
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wlcore_set_scan_chan_params(wl, cmd_channels, req->channels, |
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req->n_channels, req->n_ssids, |
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SCAN_TYPE_PERIODIC); |
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wl18xx_adjust_channels(cmd, cmd_channels); |
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if (c->num_short_intervals && c->long_interval && |
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c->long_interval > req->scan_plans[0].interval * MSEC_PER_SEC) { |
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cmd->short_cycles_msec = |
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cpu_to_le16(req->scan_plans[0].interval * MSEC_PER_SEC); |
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cmd->long_cycles_msec = cpu_to_le16(c->long_interval); |
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cmd->short_cycles_count = c->num_short_intervals; |
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} else { |
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cmd->short_cycles_msec = 0; |
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cmd->long_cycles_msec = |
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cpu_to_le16(req->scan_plans[0].interval * MSEC_PER_SEC); |
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cmd->short_cycles_count = 0; |
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} |
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wl1271_debug(DEBUG_SCAN, "short_interval: %d, long_interval: %d, num_short: %d", |
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le16_to_cpu(cmd->short_cycles_msec), |
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le16_to_cpu(cmd->long_cycles_msec), |
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cmd->short_cycles_count); |
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cmd->total_cycles = 0; |
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cmd->tag = WL1271_SCAN_DEFAULT_TAG; |
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/* create a PERIODIC_SCAN_REPORT_EVENT whenever we've got a match */ |
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cmd->report_threshold = 1; |
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cmd->terminate_on_report = 0; |
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if (cmd->active[0]) { |
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u8 band = NL80211_BAND_2GHZ; |
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ret = wl12xx_cmd_build_probe_req(wl, wlvif, |
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cmd->role_id, band, |
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req->ssids ? req->ssids[0].ssid : NULL, |
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req->ssids ? req->ssids[0].ssid_len : 0, |
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ies->ies[band], |
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ies->len[band], |
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ies->common_ies, |
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ies->common_ie_len, |
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true); |
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if (ret < 0) { |
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wl1271_error("2.4GHz PROBE request template failed"); |
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goto out; |
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} |
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} |
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if (cmd->active[1] || cmd->dfs) { |
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u8 band = NL80211_BAND_5GHZ; |
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ret = wl12xx_cmd_build_probe_req(wl, wlvif, |
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cmd->role_id, band, |
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req->ssids ? req->ssids[0].ssid : NULL, |
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req->ssids ? req->ssids[0].ssid_len : 0, |
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ies->ies[band], |
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ies->len[band], |
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ies->common_ies, |
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ies->common_ie_len, |
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true); |
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if (ret < 0) { |
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wl1271_error("5GHz PROBE request template failed"); |
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goto out; |
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} |
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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_channels); |
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kfree(cmd); |
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return ret; |
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} |
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int wl18xx_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif, |
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struct cfg80211_sched_scan_request *req, |
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struct ieee80211_scan_ies *ies) |
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{ |
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return wl18xx_scan_sched_scan_config(wl, wlvif, req, ies); |
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} |
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static int __wl18xx_scan_stop(struct wl1271 *wl, struct wl12xx_vif *wlvif, |
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u8 scan_type) |
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{ |
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struct wl18xx_cmd_scan_stop *stop; |
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int ret; |
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wl1271_debug(DEBUG_CMD, "cmd periodic scan stop"); |
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stop = kzalloc(sizeof(*stop), GFP_KERNEL); |
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if (!stop) { |
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wl1271_error("failed to alloc memory to send sched scan stop"); |
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return -ENOMEM; |
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} |
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stop->role_id = wlvif->role_id; |
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stop->scan_type = scan_type; |
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ret = wl1271_cmd_send(wl, CMD_STOP_SCAN, stop, sizeof(*stop), 0); |
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if (ret < 0) { |
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wl1271_error("failed to send sched scan stop command"); |
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goto out_free; |
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} |
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out_free: |
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kfree(stop); |
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return ret; |
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} |
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void wl18xx_scan_sched_scan_stop(struct wl1271 *wl, struct wl12xx_vif *wlvif) |
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{ |
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__wl18xx_scan_stop(wl, wlvif, SCAN_TYPE_PERIODIC); |
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} |
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int wl18xx_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif, |
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struct cfg80211_scan_request *req) |
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{ |
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return wl18xx_scan_send(wl, wlvif, req); |
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} |
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int wl18xx_scan_stop(struct wl1271 *wl, struct wl12xx_vif *wlvif) |
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{ |
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return __wl18xx_scan_stop(wl, wlvif, SCAN_TYPE_SEARCH); |
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}
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