int wl1271_ap_init_templates(struct wl1271 *wl, struct ieee80211_vif *vif)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret;
ret = wl1271_ap_init_deauth_template(wl, wlvif);
if (ret < 0)
return ret;
ret = wl1271_ap_init_null_template(wl, vif);
if (ret < 0)
return ret;
ret = wl1271_ap_init_qos_null_template(wl, vif);
if (ret < 0)
return ret;
/*
* when operating as AP we want to receive external beacons for
* configuring ERP protection.
*/
ret = wl1271_acx_beacon_filter_opt(wl, wlvif, false);
if (ret < 0)
return ret;
return 0;
}
static int wl1271_ap_init_qos_null_template(struct wl1271 *wl,
struct ieee80211_vif *vif)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct ieee80211_qos_hdr *qosnull;
int ret;
u32 rate;
qosnull = kzalloc(sizeof(*qosnull), GFP_KERNEL);
if (!qosnull) {
ret = -ENOMEM;
goto out;
}
qosnull->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
IEEE80211_STYPE_QOS_NULLFUNC |
IEEE80211_FCTL_FROMDS);
/* qosnull->addr1 is filled by FW */
memcpy(qosnull->addr2, vif->addr, ETH_ALEN);
memcpy(qosnull->addr3, vif->addr, ETH_ALEN);
rate = wl1271_tx_min_rate_get(wl, wlvif->basic_rate_set);
ret = wl1271_cmd_template_set(wl, wlvif->role_id,
CMD_TEMPL_QOS_NULL_DATA, qosnull,
sizeof(*qosnull), 0, rate);
out:
kfree(qosnull);
return ret;
}
static void wlcore_started_vifs_iter(void *data, u8 *mac,
struct ieee80211_vif *vif)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
bool active = false;
int *count = (int *)data;
/*
* count active interfaces according to interface type.
* checking only bss_conf.idle is bad for some cases, e.g.
* we don't want to count sta in p2p_find as active interface.
*/
switch (wlvif->bss_type) {
case BSS_TYPE_STA_BSS:
if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
active = true;
break;
case BSS_TYPE_AP_BSS:
if (wlvif->wl->active_sta_count > 0)
active = true;
break;
default:
break;
}
if (active)
(*count)++;
}
void wl1271_scan_complete_work(struct work_struct *work)
{
struct delayed_work *dwork;
struct wl1271 *wl;
struct ieee80211_vif *vif;
struct wl12xx_vif *wlvif;
int ret;
dwork = container_of(work, struct delayed_work, work);
wl = container_of(dwork, struct wl1271, scan_complete_work);
wl1271_debug(DEBUG_SCAN, "Scanning complete");
mutex_lock(&wl->mutex);
if (unlikely(wl->state != WLCORE_STATE_ON))
goto out;
if (wl->scan.state == WL1271_SCAN_STATE_IDLE)
goto out;
vif = wl->scan_vif;
wlvif = wl12xx_vif_to_data(vif);
/*
* Rearm the tx watchdog just before idling scan. This
* prevents just-finished scans from triggering the watchdog
*/
wl12xx_rearm_tx_watchdog_locked(wl);
wl->scan.state = WL1271_SCAN_STATE_IDLE;
memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
wl->scan.req = NULL;
wl->scan_vif = NULL;
ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
/* restore hardware connection monitoring template */
wl1271_cmd_build_ap_probe_req(wl, wlvif, wlvif->probereq);
}
wl1271_ps_elp_sleep(wl);
if (wl->scan.failed) {
wl1271_info("Scan completed due to error.");
wl12xx_queue_recovery_work(wl);
}
wlcore_cmd_regdomain_config_locked(wl);
ieee80211_scan_completed(wl->hw, false);
out:
mutex_unlock(&wl->mutex);
}
void wl1271_scan_complete_work(struct work_struct *work)
{
struct delayed_work *dwork;
struct wl1271 *wl;
struct ieee80211_vif *vif;
struct wl12xx_vif *wlvif;
int ret;
dwork = container_of(work, struct delayed_work, work);
wl = container_of(dwork, struct wl1271, scan_complete_work);
wl1271_debug(DEBUG_SCAN, "Scanning complete");
mutex_lock(&wl->mutex);
if (wl->state == WL1271_STATE_OFF)
goto out;
if (wl->scan.state == WL1271_SCAN_STATE_IDLE)
goto out;
vif = wl->scan_vif;
wlvif = wl12xx_vif_to_data(vif);
wl12xx_rearm_tx_watchdog_locked(wl);
wl->scan.state = WL1271_SCAN_STATE_IDLE;
memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
wl->scan.req = NULL;
wl->scan_vif = NULL;
ret = wl1271_ps_elp_wakeup(wl);
if (ret < 0)
goto out;
if (test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags)) {
wl1271_cmd_build_ap_probe_req(wl, wlvif, wlvif->probereq);
}
wl1271_ps_elp_sleep(wl);
if (wl->scan.failed) {
wl1271_info("Scan completed due to error.");
wl12xx_queue_recovery_work(wl);
}
ieee80211_scan_completed(wl->hw, false);
out:
mutex_unlock(&wl->mutex);
}
static int wl1271_sta_hw_init_post_mem(struct wl1271 *wl,
struct ieee80211_vif *vif)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret;
/* disable the keep-alive feature */
ret = wl1271_acx_keep_alive_mode(wl, wlvif, false);
if (ret < 0)
return ret;
return 0;
}
static
void wl18xx_get_last_tx_rate(struct wl1271 *wl, struct ieee80211_vif *vif,
struct ieee80211_tx_rate *rate)
{
u8 fw_rate = wl->fw_status_2->counters.tx_last_rate;
if (fw_rate > CONF_HW_RATE_INDEX_MAX) {
wl1271_error("last Tx rate invalid: %d", fw_rate);
rate->idx = 0;
rate->flags = 0;
return;
}
if (fw_rate <= CONF_HW_RATE_INDEX_54MBPS) {
rate->idx = fw_rate;
rate->flags = 0;
} else {
rate->flags = IEEE80211_TX_RC_MCS;
rate->idx = fw_rate - CONF_HW_RATE_INDEX_MCS0;
/* SGI modifier is counted as a separate rate */
if (fw_rate >= CONF_HW_RATE_INDEX_MCS7_SGI)
(rate->idx)--;
if (fw_rate == CONF_HW_RATE_INDEX_MCS15_SGI)
(rate->idx)--;
/* this also covers the 40Mhz SGI case (= MCS15) */
if (fw_rate == CONF_HW_RATE_INDEX_MCS7_SGI ||
fw_rate == CONF_HW_RATE_INDEX_MCS15_SGI)
rate->flags |= IEEE80211_TX_RC_SHORT_GI;
if (fw_rate > CONF_HW_RATE_INDEX_MCS7_SGI && vif) {
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
if (wlvif->channel_type == NL80211_CHAN_HT40MINUS ||
wlvif->channel_type == NL80211_CHAN_HT40PLUS) {
/* adjustment needed for range 0-7 */
rate->idx -= 8;
rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
}
}
}
}
static int wl1271_sta_hw_init_post_mem(struct wl1271 *wl,
struct ieee80211_vif *vif)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret, i;
/* disable all keep-alive templates */
for (i = 0; i < CMD_TEMPL_KLV_IDX_MAX; i++) {
ret = wl1271_acx_keep_alive_config(wl, wlvif, i,
ACX_KEEP_ALIVE_TPL_INVALID);
if (ret < 0)
return ret;
}
/* disable the keep-alive feature */
ret = wl1271_acx_keep_alive_mode(wl, wlvif, false);
if (ret < 0)
return ret;
return 0;
}
int wlcore_scan(struct wl1271 *wl, struct ieee80211_vif *vif,
const u8 *ssid, size_t ssid_len,
struct cfg80211_scan_request *req)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
/*
* cfg80211 should guarantee that we don't get more channels
* than what we have registered.
*/
BUG_ON(req->n_channels > WL1271_MAX_CHANNELS);
if (wl->scan.state != WL1271_SCAN_STATE_IDLE)
return -EBUSY;
wl->scan.state = WL1271_SCAN_STATE_2GHZ_ACTIVE;
if (ssid_len && ssid) {
wl->scan.ssid_len = ssid_len;
memcpy(wl->scan.ssid, ssid, ssid_len);
} else {
wl->scan.ssid_len = 0;
}
wl->scan_wlvif = wlvif;
wl->scan.req = req;
memset(wl->scan.scanned_ch, 0, sizeof(wl->scan.scanned_ch));
/* we assume failure so that timeout scenarios are handled correctly */
wl->scan.failed = true;
ieee80211_queue_delayed_work(wl->hw, &wl->scan_complete_work,
msecs_to_jiffies(WL1271_SCAN_TIMEOUT));
wl->ops->scan_start(wl, wlvif, req);
return 0;
}
int wl1271_build_qos_null_data(struct wl1271 *wl, struct ieee80211_vif *vif)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct ieee80211_qos_hdr template;
memset(&template, 0, sizeof(template));
int wl1271_init_vif_specific(struct wl1271 *wl, struct ieee80211_vif *vif)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct conf_tx_ac_category *conf_ac;
struct conf_tx_tid *conf_tid;
bool is_ap = (wlvif->bss_type == BSS_TYPE_AP_BSS);
int ret, i;
/*
* consider all existing roles before configuring psm.
*/
if (!wl->ap_count) {
if (is_ap) {
/* Configure for power always on */
ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_CAM);
if (ret < 0)
return ret;
} else if (!wl->sta_count) {
/* Configure for ELP power saving */
ret = wl1271_acx_sleep_auth(wl, WL1271_PSM_ELP);
if (ret < 0)
return ret;
}
}
/* Mode specific init */
if (is_ap) {
ret = wl1271_ap_hw_init(wl, wlvif);
if (ret < 0)
return ret;
ret = wl12xx_init_ap_role(wl, wlvif);
if (ret < 0)
return ret;
} else {
ret = wl1271_sta_hw_init(wl, wlvif);
if (ret < 0)
return ret;
ret = wl12xx_init_sta_role(wl, wlvif);
if (ret < 0)
return ret;
}
wl12xx_init_phy_vif_config(wl, wlvif);
/* Default TID/AC configuration */
BUG_ON(wl->conf.tx.tid_conf_count != wl->conf.tx.ac_conf_count);
for (i = 0; i < wl->conf.tx.tid_conf_count; i++) {
conf_ac = &wl->conf.tx.ac_conf[i];
ret = wl1271_acx_ac_cfg(wl, wlvif, conf_ac->ac,
conf_ac->cw_min, conf_ac->cw_max,
conf_ac->aifsn, conf_ac->tx_op_limit);
if (ret < 0)
return ret;
conf_tid = &wl->conf.tx.tid_conf[i];
ret = wl1271_acx_tid_cfg(wl, wlvif,
conf_tid->queue_id,
conf_tid->channel_type,
conf_tid->tsid,
conf_tid->ps_scheme,
conf_tid->ack_policy,
conf_tid->apsd_conf[0],
conf_tid->apsd_conf[1]);
if (ret < 0)
return ret;
}
/* Configure HW encryption */
ret = wl1271_acx_feature_cfg(wl, wlvif);
if (ret < 0)
return ret;
/* Mode specific init - post mem init */
if (is_ap)
ret = wl1271_ap_hw_init_post_mem(wl, vif);
else
ret = wl1271_sta_hw_init_post_mem(wl, vif);
if (ret < 0)
return ret;
/* Configure initiator BA sessions policies */
ret = wl1271_set_ba_policies(wl, wlvif);
if (ret < 0)
return ret;
return 0;
}
static int wl1271_scan_send(struct wl1271 *wl, struct ieee80211_vif *vif,
struct cfg80211_scan_request *req)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct wl1271_cmd_scan_params *cmd;
int ret;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd) {
ret = -ENOMEM;
goto out;
}
/* TODO: delete split_scan_timeout conf */
/* scan on the dev role if the regular one is not started */
if (wlvif->role_id == WL12XX_INVALID_ROLE_ID)
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;
/* TODO: use wlvif->type instead? */
cmd->bss_type = SCAN_BSS_TYPE_ANY;
cmd->ssid_from_list = 0;
cmd->filter = 0;
cmd->add_broadcast = 0;
/* TODO: figure this ones out */
/* Send scan command in high priority */
cmd->urgency = 1;
cmd->protect = 0;
/* TODO: take num_probe from req if available */
cmd->n_probe_reqs = wl->conf.scan.num_probe_reqs;
cmd->terminate_after = 0;
/* configure channels */
WARN_ON(req->n_ssids > 1); /* TODO: support multi ssid */
wlcore_set_scan_chan_params(wl, cmd, req->channels,
req->n_channels, req->n_ssids,
SCAN_TYPE_SEARCH);
/*
* all the cycles params (except total cycles) should
* remain 0 for normal scan
*/
cmd->total_cycles = 1;
if (req->no_cck)
cmd->rate = WLCORE_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,
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,
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);
return ret;
}
void wl1271_scan_stm(struct wl1271 *wl, struct ieee80211_vif *vif)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
int ret = 0;
enum ieee80211_band band;
u32 rate, mask;
switch (wl->scan.state) {
case WL1271_SCAN_STATE_IDLE:
break;
case WL1271_SCAN_STATE_2GHZ_ACTIVE:
band = IEEE80211_BAND_2GHZ;
mask = wlvif->bitrate_masks[band];
if (wl->scan.req->no_cck) {
mask &= ~CONF_TX_CCK_RATES;
if (!mask)
mask = CONF_TX_RATE_MASK_BASIC_P2P;
}
rate = wl1271_tx_min_rate_get(wl, mask);
ret = wl1271_scan_send(wl, vif, band, false, rate);
if (ret == WL1271_NOTHING_TO_SCAN) {
wl->scan.state = WL1271_SCAN_STATE_2GHZ_PASSIVE;
wl1271_scan_stm(wl, vif);
}
break;
case WL1271_SCAN_STATE_2GHZ_PASSIVE:
band = IEEE80211_BAND_2GHZ;
mask = wlvif->bitrate_masks[band];
if (wl->scan.req->no_cck) {
mask &= ~CONF_TX_CCK_RATES;
if (!mask)
mask = CONF_TX_RATE_MASK_BASIC_P2P;
}
rate = wl1271_tx_min_rate_get(wl, mask);
ret = wl1271_scan_send(wl, vif, band, true, rate);
if (ret == WL1271_NOTHING_TO_SCAN) {
if (wl->enable_11a)
wl->scan.state = WL1271_SCAN_STATE_5GHZ_ACTIVE;
else
wl->scan.state = WL1271_SCAN_STATE_DONE;
wl1271_scan_stm(wl, vif);
}
break;
case WL1271_SCAN_STATE_5GHZ_ACTIVE:
band = IEEE80211_BAND_5GHZ;
rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);
ret = wl1271_scan_send(wl, vif, band, false, rate);
if (ret == WL1271_NOTHING_TO_SCAN) {
wl->scan.state = WL1271_SCAN_STATE_5GHZ_PASSIVE;
wl1271_scan_stm(wl, vif);
}
break;
case WL1271_SCAN_STATE_5GHZ_PASSIVE:
band = IEEE80211_BAND_5GHZ;
rate = wl1271_tx_min_rate_get(wl, wlvif->bitrate_masks[band]);
ret = wl1271_scan_send(wl, vif, band, true, rate);
if (ret == WL1271_NOTHING_TO_SCAN) {
wl->scan.state = WL1271_SCAN_STATE_DONE;
wl1271_scan_stm(wl, vif);
}
break;
case WL1271_SCAN_STATE_DONE:
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));
break;
default:
wl1271_error("invalid scan state");
break;
}
if (ret < 0) {
cancel_delayed_work(&wl->scan_complete_work);
ieee80211_queue_delayed_work(wl->hw, &wl->scan_complete_work,
msecs_to_jiffies(0));
}
}
static int wl1271_scan_send(struct wl1271 *wl, struct ieee80211_vif *vif,
enum ieee80211_band band,
bool passive, u32 basic_rate)
{
struct wl12xx_vif *wlvif = wl12xx_vif_to_data(vif);
struct wl1271_cmd_scan *cmd;
struct wl1271_cmd_trigger_scan_to *trigger;
int ret;
u16 scan_options = 0;
if (!passive && wl->scan.req->n_ssids == 0)
return WL1271_NOTHING_TO_SCAN;
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
trigger = kzalloc(sizeof(*trigger), GFP_KERNEL);
if (!cmd || !trigger) {
ret = -ENOMEM;
goto out;
}
if (wl->conf.scan.split_scan_timeout)
scan_options |= WL1271_SCAN_OPT_SPLIT_SCAN;
if (passive)
scan_options |= WL1271_SCAN_OPT_PASSIVE;
if (wlvif->bss_type == BSS_TYPE_AP_BSS ||
test_bit(WLVIF_FLAG_STA_ASSOCIATED, &wlvif->flags))
cmd->params.role_id = wlvif->role_id;
else
cmd->params.role_id = wlvif->dev_role_id;
if (WARN_ON(cmd->params.role_id == WL12XX_INVALID_ROLE_ID)) {
ret = -EINVAL;
goto out;
}
cmd->params.scan_options = cpu_to_le16(scan_options);
cmd->params.n_ch = wl1271_get_scan_channels(wl, wl->scan.req,
cmd->channels,
band, passive);
if (cmd->params.n_ch == 0) {
ret = WL1271_NOTHING_TO_SCAN;
goto out;
}
cmd->params.tx_rate = cpu_to_le32(basic_rate);
cmd->params.n_probe_reqs = wl->conf.scan.num_probe_reqs;
cmd->params.tid_trigger = CONF_TX_AC_ANY_TID;
cmd->params.scan_tag = WL1271_SCAN_DEFAULT_TAG;
if (band == IEEE80211_BAND_2GHZ)
cmd->params.band = WL1271_SCAN_BAND_2_4_GHZ;
else
cmd->params.band = WL1271_SCAN_BAND_5_GHZ;
if (wl->scan.ssid_len && wl->scan.ssid) {
cmd->params.ssid_len = wl->scan.ssid_len;
memcpy(cmd->params.ssid, wl->scan.ssid, wl->scan.ssid_len);
}
memcpy(cmd->addr, vif->addr, ETH_ALEN);
ret = wl12xx_cmd_build_probe_req(wl, wlvif,
cmd->params.role_id, band,
wl->scan.ssid, wl->scan.ssid_len,
wl->scan.req->ie,
wl->scan.req->ie_len);
if (ret < 0) {
wl1271_error("PROBE request template failed");
goto out;
}
trigger->timeout = cpu_to_le32(wl->conf.scan.split_scan_timeout);
ret = wl1271_cmd_send(wl, CMD_TRIGGER_SCAN_TO, trigger,
sizeof(*trigger), 0);
if (ret < 0) {
wl1271_error("trigger scan to failed for hw scan");
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);
kfree(trigger);
return ret;
}
