new file mode 100644
@@ -0,0 +1,756 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2022-2024 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+#include "cc33xx.h"
+#include "debug.h"
+#include "cmd.h"
+#include "scan.h"
+#include "tx.h"
+#include "conf.h"
+
+static void cc33xx_adjust_channels(struct scan_param *scan_param,
+ struct cc33xx_scan_channels *cmd_channels,
+ enum scan_request_type scan_type)
+{
+ struct conn_scan_ch_info *ch_info_list;
+ struct conn_scan_dwell_info *dwell_info;
+ struct conn_scan_ch_params *channel;
+ struct conn_scan_ch_params *ch_params_list;
+
+ u8 *passive;
+ u8 *dfs;
+ u8 *active;
+ int i, j;
+ u8 band;
+
+ if (scan_type == SCAN_REQUEST_CONNECT_PERIODIC_SCAN) {
+ ch_info_list = scan_param->u.periodic.channel_list;
+ dwell_info = scan_param->u.periodic.dwell_info;
+ active = (u8 *)&scan_param->u.periodic.active;
+ passive = (u8 *)&scan_param->u.periodic.passive;
+ dfs = (u8 *)&scan_param->u.periodic.dfs;
+ } else {
+ ch_info_list = scan_param->u.one_shot.channel_list;
+ dwell_info = scan_param->u.one_shot.dwell_info;
+ active = (u8 *)&scan_param->u.one_shot.active;
+ passive = (u8 *)&scan_param->u.one_shot.passive;
+ dfs = (u8 *)&scan_param->u.one_shot.dfs;
+ }
+
+ memcpy(passive, cmd_channels->passive, sizeof(cmd_channels->passive));
+ memcpy(active, cmd_channels->active, sizeof(cmd_channels->active));
+ *dfs = cmd_channels->dfs;
+
+ ch_params_list = cmd_channels->channels_2;
+ for (i = 0; i < MAX_CHANNELS_2GHZ; ++i) {
+ ch_info_list[i].channel = ch_params_list[i].channel;
+ ch_info_list[i].flags = ch_params_list[i].flags;
+ ch_info_list[i].tx_power_att = ch_params_list[i].tx_power_att;
+ }
+
+ channel = &ch_params_list[0];
+ band = NL80211_BAND_2GHZ;
+ dwell_info[band].min_duration = channel->min_duration;
+ dwell_info[band].max_duration = channel->max_duration;
+ dwell_info[band].passive_duration = channel->passive_duration;
+
+ ch_params_list = cmd_channels->channels_5;
+ for (j = 0; j < MAX_CHANNELS_5GHZ; ++i, ++j) {
+ ch_info_list[i].channel = ch_params_list[j].channel;
+ ch_info_list[i].flags = ch_params_list[j].flags;
+ ch_info_list[i].tx_power_att = ch_params_list[j].tx_power_att;
+ }
+
+ channel = &ch_params_list[0];
+ band = NL80211_BAND_5GHZ;
+ dwell_info[band].min_duration = channel->min_duration;
+ dwell_info[band].max_duration = channel->max_duration;
+ dwell_info[band].passive_duration = channel->passive_duration;
+}
+
+static int cc33xx_cmd_build_probe_req(struct cc33xx *cc,
+ struct cc33xx_vif *wlvif, u8 role_id,
+ u8 scan_type, const u8 *ssid,
+ size_t ssid_len, const u8 *ie0,
+ size_t ie0_len, const u8 *ie1,
+ size_t ie1_len, bool sched_scan)
+{
+ struct ieee80211_vif *vif = cc33xx_wlvif_to_vif(wlvif);
+ struct sk_buff *skb = NULL;
+ struct cc33xx_cmd_set_ies *cmd;
+ int ret;
+
+ cc33xx_debug(DEBUG_SCAN, "build probe request scan_type %d", scan_type);
+
+ cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
+ if (!cmd) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ skb = ieee80211_probereq_get(cc->hw, vif->addr, ssid,
+ ssid_len, ie0_len + ie1_len);
+ if (!skb) {
+ ret = -ENOMEM;
+ goto out_free;
+ }
+
+ if (ie0_len)
+ skb_put_data(skb, ie0, ie0_len);
+
+ if (ie1_len)
+ skb_put_data(skb, ie1, ie1_len);
+
+ cmd->scan_type = scan_type;
+ cmd->role_id = role_id;
+
+ cmd->len = cpu_to_le16(skb->len - sizeof(struct ieee80211_hdr_3addr));
+
+ if (skb->data) {
+ memcpy(cmd->data,
+ skb->data + sizeof(struct ieee80211_hdr_3addr), le16_to_cpu(cmd->len));
+ }
+
+ usleep_range(10000, 11000);
+ ret = cc33xx_cmd_send(cc, CMD_SET_PROBE_IE, cmd, sizeof(*cmd), 0);
+
+ if (ret < 0) {
+ cc33xx_warning("cmd set_template failed: %d", ret);
+ goto out_free;
+ }
+
+out_free:
+ dev_kfree_skb(skb);
+ kfree(cmd);
+out:
+ return ret;
+}
+
+static void cc33xx_started_vifs_iter(void *data, u8 *mac,
+ struct ieee80211_vif *vif)
+{
+ struct cc33xx_vif *wlvif = cc33xx_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->cc->active_sta_count > 0)
+ active = true;
+ break;
+
+ default:
+ break;
+ }
+
+ if (active)
+ (*count)++;
+}
+
+static int cc33xx_count_started_vifs(struct cc33xx *cc)
+{
+ int count = 0;
+
+ ieee80211_iterate_active_interfaces_atomic(cc->hw,
+ IEEE80211_IFACE_ITER_RESUME_ALL,
+ cc33xx_started_vifs_iter,
+ &count);
+ return count;
+}
+
+static int cc33xx_scan_get_channels(struct cc33xx *cc,
+ 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;
+ struct conn_scan_ch_params *ch;
+ struct ieee80211_channel *req_ch;
+
+ /* configure dwell times according to scan type */
+ if (scan_type == SCAN_TYPE_SEARCH) {
+ struct conf_scan_settings *c = &cc->conf.host_conf.scan;
+ bool active_vif_exists = !!cc33xx_count_started_vifs(cc);
+
+ 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 =
+ &cc->conf.host_conf.sched_scan;
+ u32 delta_per_probe;
+
+ delta_per_probe = (band == NL80211_BAND_5GHZ) ?
+ c->dwell_time_delta_per_probe_5 :
+ 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;
+ max_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;
+ ch = &channels[j];
+ req_ch = req_channels[i];
+
+ if (force_passive)
+ flags |= IEEE80211_CHAN_NO_IR;
+
+ if (req_ch->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) {
+ ch->flags |= SCAN_CHANNEL_FLAGS_DFS;
+
+ ch->passive_duration =
+ cpu_to_le16(dwell_time_dfs);
+ } else {
+ ch->passive_duration =
+ cpu_to_le16(dwell_time_passive);
+ }
+
+ ch->min_duration = cpu_to_le16(min_dwell_time_active);
+ ch->max_duration = cpu_to_le16(max_dwell_time_active);
+
+ ch->tx_power_att = req_ch->max_power;
+ ch->channel = req_ch->hw_value;
+
+ if (n_pactive_ch && band == NL80211_BAND_2GHZ &&
+ ch->channel >= 12 && ch->channel <= 14 &&
+ (flags & IEEE80211_CHAN_NO_IR) && !force_passive) {
+ /* pactive channels treated as DFS */
+ ch->flags = SCAN_CHANNEL_FLAGS_DFS;
+
+ /* n_pactive_ch is counted down from the end of
+ * the passive channel list
+ */
+ (*n_pactive_ch)++;
+ cc33xx_debug(DEBUG_SCAN, "n_pactive_ch = %d",
+ *n_pactive_ch);
+ }
+
+ cc33xx_debug(DEBUG_SCAN, "freq %d, ch. %d, flags 0x%x, power %d, min/max_dwell %d/%d%s%s",
+ req_ch->center_freq, req_ch->hw_value,
+ req_ch->flags, req_ch->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;
+}
+
+static bool cc33xx_set_scan_chan_params(struct cc33xx *cc,
+ struct cc33xx_scan_channels *cfg,
+ struct ieee80211_channel *channels[],
+ u32 n_channels, u32 n_ssids,
+ int scan_type)
+{
+ u8 n_pactive_ch = 0;
+
+ cfg->passive[0] = cc33xx_scan_get_channels(cc, 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] = cc33xx_scan_get_channels(cc, 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] = cc33xx_scan_get_channels(cc, channels, n_channels,
+ n_ssids, cfg->channels_5,
+ NL80211_BAND_5GHZ, false,
+ true, 0, MAX_CHANNELS_5GHZ,
+ &n_pactive_ch, scan_type);
+
+ cfg->dfs = cc33xx_scan_get_channels(cc, channels, n_channels, n_ssids,
+ cfg->channels_5, NL80211_BAND_5GHZ,
+ true, true, cfg->passive[1],
+ MAX_CHANNELS_5GHZ, &n_pactive_ch,
+ scan_type);
+
+ cfg->active[1] = cc33xx_scan_get_channels(cc, channels, n_channels,
+ n_ssids, cfg->channels_5,
+ NL80211_BAND_5GHZ, false,
+ false,
+ cfg->passive[1] + cfg->dfs,
+ MAX_CHANNELS_5GHZ,
+ &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;
+
+ cc33xx_debug(DEBUG_SCAN, "2.4GHz: active %d passive %d",
+ cfg->active[0], cfg->passive[0]);
+ cc33xx_debug(DEBUG_SCAN, "5GHz: active %d passive %d",
+ cfg->active[1], cfg->passive[1]);
+ cc33xx_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];
+}
+
+static int cc33xx_scan_send(struct cc33xx *cc, struct cc33xx_vif *wlvif,
+ struct cfg80211_scan_request *req)
+{
+ struct cc33xx_cmd_scan_params *cmd;
+ struct cc33xx_scan_channels *cmd_channels = NULL;
+ struct cc33xx_ssid *cmd_ssid;
+ u16 alloc_size;
+ int ret;
+ int i;
+
+ alloc_size = sizeof(*cmd) + (sizeof(struct cc33xx_ssid) * req->n_ssids);
+ cmd = kzalloc(alloc_size, GFP_KERNEL);
+ if (!cmd) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ /* scan on the dev role if the regular one is not started */
+ if (cc33xx_is_p2p_mgmt(wlvif))
+ cmd->role_id = wlvif->dev_role_id;
+ else
+ cmd->role_id = wlvif->role_id;
+
+ if (WARN_ON(cmd->role_id == CC33XX_INVALID_ROLE_ID)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ cmd->scan_type = SCAN_REQUEST_ONE_SHOT;
+ cmd->rssi_threshold = -127;
+ cmd->snr_threshold = 0;
+
+ for (i = 0; i < ETH_ALEN; i++)
+ cmd->bssid[i] = req->bssid[i];
+ cmd->ssid_from_list = 0;
+ cmd->filter = 0;
+ WARN_ON(req->n_ssids > 1);
+
+ /* configure channels */
+ cmd_channels = kzalloc(sizeof(*cmd_channels), GFP_KERNEL);
+ if (!cmd_channels) {
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ cc33xx_set_scan_chan_params(cc, cmd_channels, req->channels,
+ req->n_channels, req->n_ssids,
+ SCAN_TYPE_SEARCH);
+
+ cc33xx_adjust_channels(&cmd->params, cmd_channels, cmd->scan_type);
+ if (req->n_ssids > 0) {
+ cmd->ssid_from_list = 1;
+ cmd->num_of_ssids = req->n_ssids;
+ cmd_ssid = (struct cc33xx_ssid *)((u8 *)cmd + sizeof(*cmd));
+
+ cmd_ssid->len = req->ssids[0].ssid_len;
+ memcpy(cmd_ssid->ssid, req->ssids[0].ssid, cmd_ssid->len);
+ cmd_ssid->type = (req->ssids[0].ssid_len) ?
+ SCAN_SSID_TYPE_HIDDEN : SCAN_SSID_TYPE_PUBLIC;
+ }
+
+ ret = cc33xx_cmd_build_probe_req(cc, wlvif, cmd->role_id, cmd->scan_type,
+ 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) {
+ cc33xx_error("PROBE request template failed");
+ goto out;
+ }
+
+ cc33xx_dump(DEBUG_SCAN, "SCAN: ", cmd, alloc_size);
+
+ ret = cc33xx_cmd_send(cc, CMD_SCAN, cmd, alloc_size, 0);
+ if (ret < 0) {
+ cc33xx_error("SCAN failed");
+ goto out;
+ }
+
+out:
+ kfree(cmd_channels);
+ kfree(cmd);
+ return ret;
+}
+
+static int cc33xx_scan_sched_scan_ssid_list(struct cc33xx *cc,
+ struct cc33xx_vif *wlvif,
+ struct cfg80211_sched_scan_request *req,
+ struct cc33xx_cmd_ssid_list *cmd)
+{
+ struct cfg80211_match_set *sets = req->match_sets;
+ struct cfg80211_ssid *ssids = req->ssids;
+ int ret = 0, i, j, n_match_ssids = 0;
+
+ cc33xx_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)))
+ goto out;
+
+ cmd->role_id = wlvif->role_id;
+ if (!n_match_ssids) {
+ /* No filter, with ssids */
+
+ 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 {
+ /* 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;
+ }
+ }
+ }
+ }
+
+ cc33xx_debug(DEBUG_CMD, "cmd sched scan with ssid list %d",
+ cmd->n_ssids);
+ return cmd->n_ssids;
+out:
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+int cc33xx_sched_scan_start(struct cc33xx *cc, struct cc33xx_vif *wlvif,
+ struct cfg80211_sched_scan_request *req,
+ struct ieee80211_scan_ies *ies)
+{
+ struct cc33xx_cmd_scan_params *cmd;
+ struct cc33xx_cmd_ssid_list *ssid_list;
+ struct cc33xx_scan_channels *cmd_channels = NULL;
+ struct conf_sched_scan_settings *c = &cc->conf.host_conf.sched_scan;
+ int ret;
+ int n_ssids = 0;
+ int alloc_size = sizeof(*cmd);
+
+ cc33xx_debug(DEBUG_CMD, "cmd sched_scan scan config");
+
+ ssid_list = kzalloc(sizeof(*ssid_list), GFP_KERNEL);
+ if (!ssid_list) {
+ ret = -ENOMEM;
+ goto out_ssid_free;
+ }
+
+ n_ssids = cc33xx_scan_sched_scan_ssid_list(cc, wlvif, req, ssid_list);
+ if (n_ssids < 0)
+ return n_ssids;
+
+ cc33xx_debug(DEBUG_CMD, "ssid list num of ssids %d", ssid_list->n_ssids);
+
+ if (n_ssids <= 5) {
+ alloc_size += (n_ssids * sizeof(struct cc33xx_ssid));
+ } else { /* n_ssids > 5 */
+ ssid_list->scan_type = SCAN_REQUEST_CONNECT_PERIODIC_SCAN;
+ ret = cc33xx_cmd_send(cc, CMD_CONNECTION_SCAN_SSID_CFG,
+ ssid_list, sizeof(*ssid_list), 0);
+ if (ret < 0) {
+ cc33xx_error("cmd sched scan ssid list failed");
+ goto out_ssid_free;
+ }
+ }
+
+ cmd = kzalloc(alloc_size, GFP_KERNEL);
+ if (!cmd) {
+ ret = -ENOMEM;
+ goto out_free;
+ }
+
+ cmd->role_id = wlvif->role_id;
+
+ if (WARN_ON(cmd->role_id == CC33XX_INVALID_ROLE_ID)) {
+ ret = -EINVAL;
+ goto out_free;
+ }
+
+ cmd->scan_type = SCAN_REQUEST_CONNECT_PERIODIC_SCAN;
+ cmd->rssi_threshold = c->rssi_threshold;
+ cmd->snr_threshold = c->snr_threshold;
+
+ cmd->filter = 1;
+ cmd->num_of_ssids = n_ssids;
+
+ cc33xx_debug(DEBUG_CMD, "ssid list num of n_ssids %d", n_ssids);
+ if (n_ssids > 0 && n_ssids <= 5) {
+ cmd->ssid_from_list = 1;
+ memcpy((u8 *)cmd + sizeof(*cmd), ssid_list->ssids,
+ n_ssids * sizeof(struct cc33xx_ssid));
+ }
+
+ cmd_channels = kzalloc(sizeof(*cmd_channels), GFP_KERNEL);
+ if (!cmd_channels) {
+ ret = -ENOMEM;
+ goto out_free;
+ }
+
+ /* configure channels */
+ cc33xx_set_scan_chan_params(cc, cmd_channels, req->channels,
+ req->n_channels, req->n_ssids,
+ SCAN_TYPE_PERIODIC);
+ cc33xx_adjust_channels(&cmd->params, cmd_channels, cmd->scan_type);
+
+ memcpy(cmd->params.u.periodic.sched_scan_plans, req->scan_plans,
+ sizeof(struct sched_scan_plan_cmd) * req->n_scan_plans);
+
+ cmd->params.u.periodic.sched_scan_plans_num = req->n_scan_plans;
+
+ cc33xx_debug(DEBUG_SCAN,
+ "interval[0]: %d, iterations[0]: %d, num_plans: %d",
+ cmd->params.u.periodic.sched_scan_plans[0].interval,
+ cmd->params.u.periodic.sched_scan_plans[0].iterations,
+ cmd->params.u.periodic.sched_scan_plans_num);
+
+ ret = cc33xx_cmd_build_probe_req(cc, wlvif, cmd->role_id, cmd->scan_type,
+ req->ssids ? req->ssids[0].ssid : NULL,
+ req->ssids ? req->ssids[0].ssid_len : 0,
+ ies->ies[NL80211_BAND_2GHZ],
+ ies->len[NL80211_BAND_2GHZ],
+ ies->common_ies,
+ ies->common_ie_len, true);
+
+ if (ret < 0) {
+ cc33xx_error("PROBE request template failed");
+ goto out_free;
+ }
+
+ cc33xx_dump(DEBUG_SCAN, "SCAN: ", cmd, alloc_size);
+
+ ret = cc33xx_cmd_send(cc, CMD_SCAN, cmd, alloc_size, 0);
+ if (ret < 0) {
+ cc33xx_error("SCAN failed");
+ goto out_free;
+ }
+
+out_free:
+ kfree(cmd_channels);
+ kfree(cmd);
+
+out_ssid_free:
+ kfree(ssid_list);
+
+ return ret;
+}
+
+static int __cc33xx_scan_stop(struct cc33xx *cc,
+ struct cc33xx_vif *wlvif, u8 scan_type)
+{
+ struct cc33xx_cmd_scan_stop *stop;
+ int ret;
+
+ cc33xx_debug(DEBUG_CMD, "cmd periodic scan stop");
+
+ stop = kzalloc(sizeof(*stop), GFP_KERNEL);
+ if (!stop) {
+ cc33xx_error("failed to alloc memory to send sched scan stop");
+ return -ENOMEM;
+ }
+
+ stop->role_id = wlvif->role_id;
+ stop->scan_type = scan_type;
+
+ ret = cc33xx_cmd_send(cc, CMD_STOP_SCAN, stop, sizeof(*stop), 0);
+ if (ret < 0) {
+ cc33xx_error("failed to send sched scan stop command");
+ goto out_free;
+ }
+
+out_free:
+ kfree(stop);
+ return ret;
+}
+
+void cc33xx_scan_sched_scan_stop(struct cc33xx *cc,
+ struct cc33xx_vif *wlvif)
+{
+ __cc33xx_scan_stop(cc, wlvif, SCAN_REQUEST_CONNECT_PERIODIC_SCAN);
+}
+
+static int cc33xx_scan_start(struct cc33xx *cc, struct cc33xx_vif *wlvif,
+ struct cfg80211_scan_request *req)
+{
+ return cc33xx_scan_send(cc, wlvif, req);
+}
+
+int cc33xx_scan_stop(struct cc33xx *cc, struct cc33xx_vif *wlvif)
+{
+ return __cc33xx_scan_stop(cc, wlvif, SCAN_REQUEST_ONE_SHOT);
+}
+
+void cc33xx_scan_complete_work(struct work_struct *work)
+{
+ struct delayed_work *dwork;
+ struct cc33xx *cc;
+ struct cfg80211_scan_info info = {
+ .aborted = false,
+ };
+
+ dwork = to_delayed_work(work);
+ cc = container_of(dwork, struct cc33xx, scan_complete_work);
+
+ cc33xx_debug(DEBUG_SCAN, "Scanning complete");
+
+ mutex_lock(&cc->mutex);
+
+ if (unlikely(cc->state != CC33XX_STATE_ON))
+ goto out;
+
+ if (cc->scan.state == CC33XX_SCAN_STATE_IDLE)
+ goto out;
+
+ /* Rearm the tx watchdog just before idling scan. This
+ * prevents just-finished scans from triggering the watchdog
+ */
+ cc33xx_rearm_tx_watchdog_locked(cc);
+
+ cc->scan.state = CC33XX_SCAN_STATE_IDLE;
+ memset(cc->scan.scanned_ch, 0, sizeof(cc->scan.scanned_ch));
+ cc->scan.req = NULL;
+ cc->scan_wlvif = NULL;
+
+ if (cc->scan.failed) {
+ cc33xx_info("Scan completed due to error.");
+ cc33xx_queue_recovery_work(cc);
+ }
+
+ cc33xx_cmd_regdomain_config_locked(cc);
+
+ ieee80211_scan_completed(cc->hw, &info);
+
+out:
+ mutex_unlock(&cc->mutex);
+}
+
+int cc33xx_scan(struct cc33xx *cc, struct ieee80211_vif *vif, const u8 *ssid,
+ size_t ssid_len, struct cfg80211_scan_request *req)
+{
+ struct cc33xx_vif *wlvif = cc33xx_vif_to_data(vif);
+
+ if (cc->scan.state != CC33XX_SCAN_STATE_IDLE)
+ return -EBUSY;
+
+ cc->scan.state = CC33XX_SCAN_STATE_2GHZ_ACTIVE;
+
+ if (ssid_len && ssid) {
+ cc->scan.ssid_len = ssid_len;
+ memcpy(cc->scan.ssid, ssid, ssid_len);
+ } else {
+ cc->scan.ssid_len = 0;
+ }
+
+ cc->scan_wlvif = wlvif;
+ cc->scan.req = req;
+ memset(cc->scan.scanned_ch, 0, sizeof(cc->scan.scanned_ch));
+
+ /* we assume failure so that timeout scenarios are handled correctly */
+ cc->scan.failed = true;
+ ieee80211_queue_delayed_work(cc->hw, &cc->scan_complete_work,
+ msecs_to_jiffies(CC33XX_SCAN_TIMEOUT));
+
+ cc33xx_scan_start(cc, wlvif, req);
+
+ return 0;
+}
+
+inline void cc33xx_scan_sched_scan_results(struct cc33xx *cc)
+{
+ cc33xx_debug(DEBUG_SCAN, "got periodic scan results");
+
+ ieee80211_sched_scan_results(cc->hw);
+}
+
+void cc33xx_scan_completed(struct cc33xx *cc, struct cc33xx_vif *wlvif)
+{
+ cc->scan.failed = false;
+ cancel_delayed_work(&cc->scan_complete_work);
+ ieee80211_queue_delayed_work(cc->hw, &cc->scan_complete_work,
+ msecs_to_jiffies(0));
+}
new file mode 100644
@@ -0,0 +1,364 @@
+/* SPDX-License-Identifier: GPL-2.0-only
+ *
+ * Copyright (C) 2022-2024 Texas Instruments Incorporated - https://www.ti.com/
+ */
+
+#ifndef __SCAN_H__
+#define __SCAN_H__
+
+#include "cc33xx.h"
+
+#define CC33XX_SCAN_TIMEOUT 30000 /* msec */
+
+enum {
+ CC33XX_SCAN_STATE_IDLE,
+ CC33XX_SCAN_STATE_2GHZ_ACTIVE,
+ CC33XX_SCAN_STATE_2GHZ_PASSIVE,
+ CC33XX_SCAN_STATE_5GHZ_ACTIVE,
+ CC33XX_SCAN_STATE_5GHZ_PASSIVE,
+ CC33XX_SCAN_STATE_DONE
+};
+
+struct conn_scan_ch_params {
+ __le16 min_duration;
+ __le16 max_duration;
+ __le16 passive_duration;
+
+ u8 channel;
+ u8 tx_power_att;
+
+ /* bit 0: DFS channel; bit 1: DFS enabled */
+ u8 flags;
+
+ u8 padding[3];
+} __packed;
+
+enum {
+ SCAN_SSID_TYPE_PUBLIC = 0,
+ SCAN_SSID_TYPE_HIDDEN = 1,
+};
+
+#define MAX_CHANNELS_2GHZ 14
+#define MAX_CHANNELS_4GHZ 4
+#define MAX_CHANNELS_5GHZ 32
+
+#define SCAN_MAX_CYCLE_INTERVALS 16
+#define SCAN_MAX_BANDS 3
+#define SCHED_SCAN_MAX_SSIDS 16
+
+/******************************************************************************
+ * ** *** *** ** *
+ * ** *** SCAN API *** ** *
+ * ** *** *** ** *
+ ******************************************************************************/
+
+#define CONN_SCAN_MAX_BAND (2)
+#define CONN_SCAN_MAX_CHANNELS_ALL_BANDS (46)
+#define SCAN_MAX_SCHED_SCAN_PLANS (12)
+
+enum scan_request_type {
+ SCAN_REQUEST_NONE,
+ SCAN_REQUEST_CONNECT_PERIODIC_SCAN,
+ SCAN_REQUEST_ONE_SHOT,
+ SCAN_REQUEST_SURVEY_SCAN,
+ SCAN_NUM_OF_REQUEST_TYPE
+};
+
+/******************************************************************************
+ * ID: CMD_SCAN
+ * Desc: This command will start scan process depending scan request
+ * type
+ * Return: CMD_COMPLETE
+ *****************************************************************************/
+/* struct cc33xx_ssid - SSIDs connection scan description
+ *
+ * @type: SSID type - SCAN_SSID_TYPE_HIDDEN/SCAN_SSID_TYPE_PUBLIC
+ *
+ * @len: Length of the ssid
+ *
+ * @ssid: SSID
+ */
+struct cc33xx_ssid {
+ u8 type;
+ u8 len;
+ u8 ssid[IEEE80211_MAX_SSID_LEN];
+ u8 padding[2];
+} __packed;
+
+/**
+ * struct cc33xx_cmd_ssid_list - scan SSID list description
+ *
+ * @role_id: roleID
+ *
+ * @num_of_ssids: Number of SSID in the list. MAX 16 entries
+ *
+ * @ssid_list: SSIDs to scan for (active scan only)
+ */
+struct cc33xx_cmd_ssid_list {
+ struct cc33xx_cmd_header header;
+
+ u8 role_id;
+ u8 scan_type;
+ u8 n_ssids;
+ struct cc33xx_ssid ssids[SCHED_SCAN_MAX_SSIDS];
+ u8 padding;
+} __packed;
+
+/**
+ * struct conn_scan_dwell_info - Channels duration info per band
+ *
+ * @min_duration: Min duration (in ms)
+ *
+ * @max_duration: Max duration (in ms)
+ *
+ * @passive_duration: Duration to use for passive scans (in ms)
+ */
+struct conn_scan_dwell_info {
+ __le16 min_duration;
+ __le16 max_duration;
+ __le16 passive_duration;
+} __packed;
+
+/**
+ * struct conn_scan_ch_info - Channels info
+ *
+ * @channel: channel number (channel_e)
+ *
+ * @tx_power_att: TX power level in dbm
+ *
+ * @flags: 0 - DFS channel, 1 - DFS enabled (to be included in active scan)
+ */
+struct conn_scan_ch_info {
+ u8 channel;
+ u8 tx_power_att;
+ u8 flags;
+} __packed;
+
+/**
+ * struct scan_one_shot_info - ONE_SHOT scan param
+ *
+ * @passive: Number of passive scan channels in bands BG,A
+ *
+ * @active: Number of active scan channels in bands BG,A
+ *
+ * @dfs: Number of DFS channels in A band
+ *
+ * @channel_list: Channel list info
+ * BG band channels are set from place 0 and forward.
+ * A band channels are from CONN_SCAN_MAX_CHANNELS_BG and forward.
+ * 6Ghz band channels are from CONN_SCAN_MAX_CHANNELS_A_BG and forward.
+
+ * @dwell_info: Scan duration time info per band
+ *
+ * @reserved:
+ *
+ */
+struct scan_one_shot_info {
+ u8 passive[CONN_SCAN_MAX_BAND];
+ u8 active[CONN_SCAN_MAX_BAND];
+ u8 dfs;
+
+ struct conn_scan_ch_info channel_list[CONN_SCAN_MAX_CHANNELS_ALL_BANDS];
+ struct conn_scan_dwell_info dwell_info[CONN_SCAN_MAX_BAND];
+ u8 reserved;
+};
+
+/**
+ * sched_scan_plans - Scan plans for scheduled scan
+ *
+ * Each scan plan consists of the number of iterations to scan and the
+ * interval between scans. When a scan plan finishes (i.e., it was run
+ * for the specified number of iterations), the next scan plan is
+ * executed. The scan plans are executed in the order they appear in
+ * the array (lower index first). The last scan plan will run infinitely
+ * (until requested to stop), thus must not specify the number of
+ * iterations. All other scan plans must specify the number of
+ * iterations.
+ */
+struct sched_scan_plan_cmd {
+ u32 interval; /* In seconds */
+ u32 iterations; /* Zero to run infinitely */
+};
+
+/* struct periodicScanParams_t - Periodic scan param
+ *
+ * @sched_scan_plans: Scan plans for a scheduled scan (defined in supplicant's driver.h)
+ * interval and iterations
+ *
+ * @sched_scan_plans_num:Number of scan plans in sched_scan_plans array
+ *
+ * @passive: Number of passive scan channels in bands BG,A
+ *
+ * @active: Number of active scan channels in bands BG,A
+ *
+ * @dfs: number of DFS channels in A band
+ *
+ * @channel_list: Channel list info.
+ * BG band channels are set from place 0 and forward.
+ * A band channels are set from CONN_SCAN_MAX_CHANNELS_BG and forward.
+ * 6Ghz band are set from CONN_SCAN_MAX_CHANNELS_A_BG and forward.
+ *
+ * @dwell_info: Scan duration time info per band
+ *
+ */
+struct scan_periodic_info {
+ struct sched_scan_plan_cmd sched_scan_plans[SCAN_MAX_SCHED_SCAN_PLANS];
+ u16 sched_scan_plans_num;
+
+ u8 passive[CONN_SCAN_MAX_BAND];
+ u8 active[CONN_SCAN_MAX_BAND];
+ u8 dfs;
+
+ struct conn_scan_ch_info channel_list[CONN_SCAN_MAX_CHANNELS_ALL_BANDS];
+ struct conn_scan_dwell_info dwell_info[CONN_SCAN_MAX_BAND];
+} __packed;
+
+/**
+ * struct scan_param - union for ONE_SHOT/PERIODIC scan param
+ *
+ * @one_shot: ONE_SHOT scan param
+ *
+ * @periodic: Periodic scan param
+ */
+struct scan_param {
+ union {
+ struct scan_one_shot_info one_shot;
+ struct scan_periodic_info periodic;
+ } u;
+} __packed;
+
+/**
+ * struct cc33xx_cmd_scan_params - scan configured param
+ *
+ * @scan_type: ONE_SHOT/PERIODIC scan
+ *
+ * @role_id: role ID
+ *
+ * @params: Scan parameter for ONE_SHOT/PERIODIC Scan
+ *
+ * @rssi_threshold: RSSI threshold for basic filter
+ *
+ * @snr_threshold: SNR threshold for basic filter
+ *
+ * @bssid: BSSID to scan for
+ *
+ * @ssid_from_list: 0 - if there are more than 5 SSIDs entries
+ * (list was sent SSID CONFIGURE COMMAND),
+ * 1 - 5 or less SSIDs entries, the list is at the end of the scan command
+ *
+ * @filter: 0 - not using filter and all the beacons/probe response frame
+ * forward to upper mac, 1 - using filter
+ *
+ * @num_of_ssids: Number of SSIDs
+ */
+struct cc33xx_cmd_scan_params {
+ struct cc33xx_cmd_header header;
+ u8 scan_type;
+ u8 role_id;
+
+ struct scan_param params;
+ s8 rssi_threshold; /* for filtering (in dBm) */
+ s8 snr_threshold; /* for filtering (in dB) */
+
+ u8 bssid[ETH_ALEN];
+ u8 padding[2];
+
+ u8 ssid_from_list; /* use ssid from configured ssid list */
+ u8 filter; /* forward only results with matching ssids */
+
+ u8 num_of_ssids;
+} __packed;
+
+/******************************************************************************
+ * ID: CMD_SET_PROBE_IE
+ * Desc: This command will set the Info elements data for
+ * probe request
+ * Return: CMD_COMPLETE
+ *******************************************************************************/
+#define MAX_EXTRA_IES_LEN 512
+/**
+ * struct cc33xx_cmd_set_ies - Probe request info elements
+ *
+ * @scan_type: ONE_SHOT/PERIODIC scan
+ *
+ * @role_id: roleID
+ *
+ * @data: info element buffer
+ *
+ * @len: info element length
+ */
+struct cc33xx_cmd_set_ies {
+ struct cc33xx_cmd_header header;
+ u8 scan_type;
+ u8 role_id;
+ __le16 len;
+ u8 data[MAX_EXTRA_IES_LEN];
+} __packed;
+
+/******************************************************************************
+ * ID: CMD_STOP_SCAN
+ * Desc: This command will stop scan process depending scan request
+ * type, and if early termination is on
+ * Return: CMD_COMPLETE
+ ******************************************************************************/
+/**
+ * struct cc33xx_cmd_scan_stop - scan stop param
+ *
+ * @scan_type: Scan request type
+ *
+ * @role_id: role ID
+ *
+ * @is_ET: TRUE - Early termination is on, FALSE - no ET
+ */
+struct cc33xx_cmd_scan_stop {
+ struct cc33xx_cmd_header header;
+
+ u8 scan_type;
+ u8 role_id;
+ u8 is_ET;
+ u8 padding;
+} __packed;
+
+int cc33xx_scan_stop(struct cc33xx *cc, struct cc33xx_vif *wlvif);
+void cc33xx_scan_completed(struct cc33xx *cc, struct cc33xx_vif *wlvif);
+int cc33xx_sched_scan_start(struct cc33xx *cc, struct cc33xx_vif *wlvif,
+ struct cfg80211_sched_scan_request *req,
+ struct ieee80211_scan_ies *ies);
+void cc33xx_scan_sched_scan_stop(struct cc33xx *cc, struct cc33xx_vif *wlvif);
+
+int cc33xx_scan(struct cc33xx *cc, struct ieee80211_vif *vif,
+ const u8 *ssid, size_t ssid_len,
+ struct cfg80211_scan_request *req);
+void cc33xx_scan_complete_work(struct work_struct *work);
+void cc33xx_scan_sched_scan_results(struct cc33xx *cc);
+
+enum {
+ SCAN_SSID_FILTER_ANY = 0,
+ SCAN_SSID_FILTER_SPECIFIC = 1,
+ SCAN_SSID_FILTER_LIST = 2,
+ SCAN_SSID_FILTER_DISABLED = 3
+};
+
+#define SCAN_CHANNEL_FLAGS_DFS BIT(0) /* channel is passive until an
+ * activity is detected on it
+ */
+#define SCAN_CHANNEL_FLAGS_DFS_ENABLED BIT(1)
+
+struct cc33xx_scan_channels {
+ u8 passive[SCAN_MAX_BANDS]; /* number of passive scan channels */
+ u8 active[SCAN_MAX_BANDS]; /* number of active scan channels */
+ u8 dfs; /* number of dfs channels in 5ghz */
+ u8 passive_active; /* number of passive before active channels 2.4ghz */
+
+ struct conn_scan_ch_params channels_2[MAX_CHANNELS_2GHZ];
+ struct conn_scan_ch_params channels_5[MAX_CHANNELS_5GHZ];
+ struct conn_scan_ch_params channels_4[MAX_CHANNELS_4GHZ];
+};
+
+enum {
+ SCAN_TYPE_SEARCH = 0,
+ SCAN_TYPE_PERIODIC = 1,
+ SCAN_TYPE_TRACKING = 2,
+};
+
+#endif /* __CC33XX_SCAN_H__ */