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linuxdebug/drivers/net/wireless/silabs/wfx/sta.c

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// SPDX-License-Identifier: GPL-2.0-only
/*
* Implementation of mac80211 API.
*
* Copyright (c) 2017-2020, Silicon Laboratories, Inc.
* Copyright (c) 2010, ST-Ericsson
*/
#include <linux/etherdevice.h>
#include <net/mac80211.h>
#include "sta.h"
#include "wfx.h"
#include "fwio.h"
#include "bh.h"
#include "key.h"
#include "scan.h"
#include "debug.h"
#include "hif_tx.h"
#include "hif_tx_mib.h"
#define HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES 2
u32 wfx_rate_mask_to_hw(struct wfx_dev *wdev, u32 rates)
{
int i;
u32 ret = 0;
/* The device only supports 2GHz */
struct ieee80211_supported_band *sband = wdev->hw->wiphy->bands[NL80211_BAND_2GHZ];
for (i = 0; i < sband->n_bitrates; i++) {
if (rates & BIT(i)) {
if (i >= sband->n_bitrates)
dev_warn(wdev->dev, "unsupported basic rate\n");
else
ret |= BIT(sband->bitrates[i].hw_value);
}
}
return ret;
}
void wfx_cooling_timeout_work(struct work_struct *work)
{
struct wfx_dev *wdev = container_of(to_delayed_work(work), struct wfx_dev,
cooling_timeout_work);
wdev->chip_frozen = true;
wfx_tx_unlock(wdev);
}
void wfx_suspend_hot_dev(struct wfx_dev *wdev, enum sta_notify_cmd cmd)
{
if (cmd == STA_NOTIFY_AWAKE) {
/* Device recover normal temperature */
if (cancel_delayed_work(&wdev->cooling_timeout_work))
wfx_tx_unlock(wdev);
} else {
/* Device is too hot */
schedule_delayed_work(&wdev->cooling_timeout_work, 10 * HZ);
wfx_tx_lock(wdev);
}
}
static void wfx_filter_beacon(struct wfx_vif *wvif, bool filter_beacon)
{
static const struct wfx_hif_ie_table_entry filter_ies[] = {
{
.ie_id = WLAN_EID_VENDOR_SPECIFIC,
.has_changed = 1,
.no_longer = 1,
.has_appeared = 1,
.oui = { 0x50, 0x6F, 0x9A },
}, {
.ie_id = WLAN_EID_HT_OPERATION,
.has_changed = 1,
.no_longer = 1,
.has_appeared = 1,
}, {
.ie_id = WLAN_EID_ERP_INFO,
.has_changed = 1,
.no_longer = 1,
.has_appeared = 1,
}, {
.ie_id = WLAN_EID_CHANNEL_SWITCH,
.has_changed = 1,
.no_longer = 1,
.has_appeared = 1,
}
};
if (!filter_beacon) {
wfx_hif_beacon_filter_control(wvif, 0, 1);
} else {
wfx_hif_set_beacon_filter_table(wvif, ARRAY_SIZE(filter_ies), filter_ies);
wfx_hif_beacon_filter_control(wvif, HIF_BEACON_FILTER_ENABLE, 0);
}
}
void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
unsigned int *total_flags, u64 unused)
{
bool filter_bssid, filter_prbreq, filter_beacon;
struct ieee80211_vif *vif = NULL;
struct wfx_dev *wdev = hw->priv;
struct wfx_vif *wvif = NULL;
/* Notes:
* - Probe responses (FIF_BCN_PRBRESP_PROMISC) are never filtered
* - PS-Poll (FIF_PSPOLL) are never filtered
* - RTS, CTS and Ack (FIF_CONTROL) are always filtered
* - Broken frames (FIF_FCSFAIL and FIF_PLCPFAIL) are always filtered
* - Firmware does (yet) allow to forward unicast traffic sent to other stations (aka.
* promiscuous mode)
*/
*total_flags &= FIF_BCN_PRBRESP_PROMISC | FIF_ALLMULTI | FIF_OTHER_BSS |
FIF_PROBE_REQ | FIF_PSPOLL;
mutex_lock(&wdev->conf_mutex);
while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
mutex_lock(&wvif->scan_lock);
/* Note: FIF_BCN_PRBRESP_PROMISC covers probe response and
* beacons from other BSS
*/
if (*total_flags & FIF_BCN_PRBRESP_PROMISC)
filter_beacon = false;
else
filter_beacon = true;
wfx_filter_beacon(wvif, filter_beacon);
if (*total_flags & FIF_OTHER_BSS)
filter_bssid = false;
else
filter_bssid = true;
vif = wvif_to_vif(wvif);
/* In AP mode, chip can reply to probe request itself */
if (*total_flags & FIF_PROBE_REQ && vif->type == NL80211_IFTYPE_AP) {
dev_dbg(wdev->dev, "do not forward probe request in AP mode\n");
*total_flags &= ~FIF_PROBE_REQ;
}
if (*total_flags & FIF_PROBE_REQ)
filter_prbreq = false;
else
filter_prbreq = true;
wfx_hif_set_rx_filter(wvif, filter_bssid, filter_prbreq);
mutex_unlock(&wvif->scan_lock);
}
mutex_unlock(&wdev->conf_mutex);
}
static int wfx_get_ps_timeout(struct wfx_vif *wvif, bool *enable_ps)
{
struct ieee80211_channel *chan0 = NULL, *chan1 = NULL;
struct ieee80211_conf *conf = &wvif->wdev->hw->conf;
struct ieee80211_vif *vif = wvif_to_vif(wvif);
WARN(!vif->cfg.assoc && enable_ps,
"enable_ps is reliable only if associated");
if (wdev_to_wvif(wvif->wdev, 0)) {
struct wfx_vif *wvif_ch0 = wdev_to_wvif(wvif->wdev, 0);
struct ieee80211_vif *vif_ch0 = wvif_to_vif(wvif_ch0);
chan0 = vif_ch0->bss_conf.chandef.chan;
}
if (wdev_to_wvif(wvif->wdev, 1)) {
struct wfx_vif *wvif_ch1 = wdev_to_wvif(wvif->wdev, 1);
struct ieee80211_vif *vif_ch1 = wvif_to_vif(wvif_ch1);
chan1 = vif_ch1->bss_conf.chandef.chan;
}
if (chan0 && chan1 && vif->type != NL80211_IFTYPE_AP) {
if (chan0->hw_value == chan1->hw_value) {
/* It is useless to enable PS if channels are the same. */
if (enable_ps)
*enable_ps = false;
if (vif->cfg.assoc && vif->cfg.ps)
dev_info(wvif->wdev->dev, "ignoring requested PS mode");
return -1;
}
/* It is necessary to enable PS if channels are different. */
if (enable_ps)
*enable_ps = true;
if (wfx_api_older_than(wvif->wdev, 3, 2))
return 0;
else
return 30;
}
if (enable_ps)
*enable_ps = vif->cfg.ps;
if (vif->cfg.assoc && vif->cfg.ps)
return conf->dynamic_ps_timeout;
else
return -1;
}
int wfx_update_pm(struct wfx_vif *wvif)
{
struct ieee80211_vif *vif = wvif_to_vif(wvif);
int ps_timeout;
bool ps;
if (!vif->cfg.assoc)
return 0;
ps_timeout = wfx_get_ps_timeout(wvif, &ps);
if (!ps)
ps_timeout = 0;
WARN_ON(ps_timeout < 0);
if (wvif->uapsd_mask)
ps_timeout = 0;
if (!wait_for_completion_timeout(&wvif->set_pm_mode_complete, TU_TO_JIFFIES(512)))
dev_warn(wvif->wdev->dev, "timeout while waiting of set_pm_mode_complete\n");
return wfx_hif_set_pm(wvif, ps, ps_timeout);
}
int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
unsigned int link_id, u16 queue,
const struct ieee80211_tx_queue_params *params)
{
struct wfx_dev *wdev = hw->priv;
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
int old_uapsd = wvif->uapsd_mask;
WARN_ON(queue >= hw->queues);
mutex_lock(&wdev->conf_mutex);
assign_bit(queue, &wvif->uapsd_mask, params->uapsd);
wfx_hif_set_edca_queue_params(wvif, queue, params);
if (vif->type == NL80211_IFTYPE_STATION &&
old_uapsd != wvif->uapsd_mask) {
wfx_hif_set_uapsd_info(wvif, wvif->uapsd_mask);
wfx_update_pm(wvif);
}
mutex_unlock(&wdev->conf_mutex);
return 0;
}
int wfx_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
{
struct wfx_dev *wdev = hw->priv;
struct wfx_vif *wvif = NULL;
while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
wfx_hif_rts_threshold(wvif, value);
return 0;
}
void wfx_event_report_rssi(struct wfx_vif *wvif, u8 raw_rcpi_rssi)
{
/* RSSI: signed Q8.0, RCPI: unsigned Q7.1
* RSSI = RCPI / 2 - 110
*/
struct ieee80211_vif *vif = wvif_to_vif(wvif);
int rcpi_rssi;
int cqm_evt;
rcpi_rssi = raw_rcpi_rssi / 2 - 110;
if (rcpi_rssi <= vif->bss_conf.cqm_rssi_thold)
cqm_evt = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
else
cqm_evt = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
ieee80211_cqm_rssi_notify(vif, cqm_evt, rcpi_rssi, GFP_KERNEL);
}
static void wfx_beacon_loss_work(struct work_struct *work)
{
struct wfx_vif *wvif = container_of(to_delayed_work(work), struct wfx_vif,
beacon_loss_work);
struct ieee80211_vif *vif = wvif_to_vif(wvif);
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
ieee80211_beacon_loss(vif);
schedule_delayed_work(to_delayed_work(work), msecs_to_jiffies(bss_conf->beacon_int));
}
void wfx_set_default_unicast_key(struct ieee80211_hw *hw, struct ieee80211_vif *vif, int idx)
{
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
wfx_hif_wep_default_key_id(wvif, idx);
}
void wfx_reset(struct wfx_vif *wvif)
{
struct wfx_dev *wdev = wvif->wdev;
wfx_tx_lock_flush(wdev);
wfx_hif_reset(wvif, false);
wfx_tx_policy_init(wvif);
if (wvif_count(wdev) <= 1)
wfx_hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
wfx_tx_unlock(wdev);
wvif->join_in_progress = false;
cancel_delayed_work_sync(&wvif->beacon_loss_work);
wvif = NULL;
while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
wfx_update_pm(wvif);
}
int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta)
{
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv;
sta_priv->vif_id = wvif->id;
if (vif->type == NL80211_IFTYPE_STATION)
wfx_hif_set_mfp(wvif, sta->mfp, sta->mfp);
/* In station mode, the firmware interprets new link-id as a TDLS peer */
if (vif->type == NL80211_IFTYPE_STATION && !sta->tdls)
return 0;
sta_priv->link_id = ffz(wvif->link_id_map);
wvif->link_id_map |= BIT(sta_priv->link_id);
WARN_ON(!sta_priv->link_id);
WARN_ON(sta_priv->link_id >= HIF_LINK_ID_MAX);
wfx_hif_map_link(wvif, false, sta->addr, sta_priv->link_id, sta->mfp);
return 0;
}
int wfx_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif, struct ieee80211_sta *sta)
{
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
struct wfx_sta_priv *sta_priv = (struct wfx_sta_priv *)&sta->drv_priv;
/* See note in wfx_sta_add() */
if (!sta_priv->link_id)
return 0;
/* FIXME add a mutex? */
wfx_hif_map_link(wvif, true, sta->addr, sta_priv->link_id, false);
wvif->link_id_map &= ~BIT(sta_priv->link_id);
return 0;
}
static int wfx_upload_ap_templates(struct wfx_vif *wvif)
{
struct ieee80211_vif *vif = wvif_to_vif(wvif);
struct sk_buff *skb;
skb = ieee80211_beacon_get(wvif->wdev->hw, vif, 0);
if (!skb)
return -ENOMEM;
wfx_hif_set_template_frame(wvif, skb, HIF_TMPLT_BCN, API_RATE_INDEX_B_1MBPS);
dev_kfree_skb(skb);
skb = ieee80211_proberesp_get(wvif->wdev->hw, vif);
if (!skb)
return -ENOMEM;
wfx_hif_set_template_frame(wvif, skb, HIF_TMPLT_PRBRES, API_RATE_INDEX_B_1MBPS);
dev_kfree_skb(skb);
return 0;
}
static void wfx_set_mfp_ap(struct wfx_vif *wvif)
{
struct ieee80211_vif *vif = wvif_to_vif(wvif);
struct sk_buff *skb = ieee80211_beacon_get(wvif->wdev->hw, vif, 0);
const int ieoffset = offsetof(struct ieee80211_mgmt, u.beacon.variable);
const u16 *ptr = (u16 *)cfg80211_find_ie(WLAN_EID_RSN, skb->data + ieoffset,
skb->len - ieoffset);
const int pairwise_cipher_suite_count_offset = 8 / sizeof(u16);
const int pairwise_cipher_suite_size = 4 / sizeof(u16);
const int akm_suite_size = 4 / sizeof(u16);
if (ptr) {
ptr += pairwise_cipher_suite_count_offset;
if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))
return;
ptr += 1 + pairwise_cipher_suite_size * *ptr;
if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))
return;
ptr += 1 + akm_suite_size * *ptr;
if (WARN_ON(ptr > (u16 *)skb_tail_pointer(skb)))
return;
wfx_hif_set_mfp(wvif, *ptr & BIT(7), *ptr & BIT(6));
}
}
int wfx_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
struct wfx_dev *wdev = wvif->wdev;
int ret;
wvif = NULL;
while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
wfx_update_pm(wvif);
wvif = (struct wfx_vif *)vif->drv_priv;
wfx_upload_ap_templates(wvif);
ret = wfx_hif_start(wvif, &vif->bss_conf, wvif->channel);
if (ret > 0)
return -EIO;
wfx_set_mfp_ap(wvif);
return ret;
}
void wfx_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
wfx_reset(wvif);
}
static void wfx_join(struct wfx_vif *wvif)
{
struct ieee80211_vif *vif = wvif_to_vif(wvif);
struct ieee80211_bss_conf *conf = &vif->bss_conf;
struct cfg80211_bss *bss = NULL;
u8 ssid[IEEE80211_MAX_SSID_LEN];
const u8 *ssid_ie = NULL;
int ssid_len = 0;
int ret;
wfx_tx_lock_flush(wvif->wdev);
bss = cfg80211_get_bss(wvif->wdev->hw->wiphy, wvif->channel, conf->bssid, NULL, 0,
IEEE80211_BSS_TYPE_ANY, IEEE80211_PRIVACY_ANY);
if (!bss && !vif->cfg.ibss_joined) {
wfx_tx_unlock(wvif->wdev);
return;
}
rcu_read_lock(); /* protect ssid_ie */
if (bss)
ssid_ie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
if (ssid_ie) {
ssid_len = ssid_ie[1];
if (ssid_len > IEEE80211_MAX_SSID_LEN)
ssid_len = IEEE80211_MAX_SSID_LEN;
memcpy(ssid, &ssid_ie[2], ssid_len);
}
rcu_read_unlock();
cfg80211_put_bss(wvif->wdev->hw->wiphy, bss);
wvif->join_in_progress = true;
ret = wfx_hif_join(wvif, conf, wvif->channel, ssid, ssid_len);
if (ret) {
ieee80211_connection_loss(vif);
wfx_reset(wvif);
} else {
/* Due to beacon filtering it is possible that the AP's beacon is not known for the
* mac80211 stack. Disable filtering temporary to make sure the stack receives at
* least one
*/
wfx_filter_beacon(wvif, false);
}
wfx_tx_unlock(wvif->wdev);
}
static void wfx_join_finalize(struct wfx_vif *wvif, struct ieee80211_bss_conf *info)
{
struct ieee80211_vif *vif = wvif_to_vif(wvif);
struct ieee80211_sta *sta = NULL;
int ampdu_density = 0;
bool greenfield = false;
rcu_read_lock(); /* protect sta */
if (info->bssid && !vif->cfg.ibss_joined)
sta = ieee80211_find_sta(vif, info->bssid);
if (sta && sta->deflink.ht_cap.ht_supported)
ampdu_density = sta->deflink.ht_cap.ampdu_density;
if (sta && sta->deflink.ht_cap.ht_supported &&
!(info->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT))
greenfield = !!(sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD);
rcu_read_unlock();
wvif->join_in_progress = false;
wfx_hif_set_association_mode(wvif, ampdu_density, greenfield, info->use_short_preamble);
wfx_hif_keep_alive_period(wvif, 0);
/* beacon_loss_count is defined to 7 in net/mac80211/mlme.c. Let's use the same value. */
wfx_hif_set_bss_params(wvif, vif->cfg.aid, 7);
wfx_hif_set_beacon_wakeup_period(wvif, 1, 1);
wfx_update_pm(wvif);
}
int wfx_join_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
wfx_upload_ap_templates(wvif);
wfx_join(wvif);
return 0;
}
void wfx_leave_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
wfx_reset(wvif);
}
static void wfx_enable_beacon(struct wfx_vif *wvif, bool enable)
{
/* Driver has Content After DTIM Beacon in queue. Driver is waiting for a signal from the
* firmware. Since we are going to stop to send beacons, this signal will never happens. See
* also wfx_suspend_resume_mc()
*/
if (!enable && wfx_tx_queues_has_cab(wvif)) {
wvif->after_dtim_tx_allowed = true;
wfx_bh_request_tx(wvif->wdev);
}
wfx_hif_beacon_transmit(wvif, enable);
}
void wfx_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *info, u64 changed)
{
struct wfx_dev *wdev = hw->priv;
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
int i;
mutex_lock(&wdev->conf_mutex);
if (changed & BSS_CHANGED_BASIC_RATES ||
changed & BSS_CHANGED_BEACON_INT ||
changed & BSS_CHANGED_BSSID) {
if (vif->type == NL80211_IFTYPE_STATION)
wfx_join(wvif);
}
if (changed & BSS_CHANGED_ASSOC) {
if (vif->cfg.assoc || vif->cfg.ibss_joined)
wfx_join_finalize(wvif, info);
else if (!vif->cfg.assoc && vif->type == NL80211_IFTYPE_STATION)
wfx_reset(wvif);
else
dev_warn(wdev->dev, "misunderstood change: ASSOC\n");
}
if (changed & BSS_CHANGED_BEACON_INFO) {
if (vif->type != NL80211_IFTYPE_STATION)
dev_warn(wdev->dev, "misunderstood change: BEACON_INFO\n");
wfx_hif_set_beacon_wakeup_period(wvif, info->dtim_period, info->dtim_period);
/* We temporary forwarded beacon for join process. It is now no more necessary. */
wfx_filter_beacon(wvif, true);
}
if (changed & BSS_CHANGED_ARP_FILTER) {
for (i = 0; i < HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES; i++) {
__be32 *arp_addr = &vif->cfg.arp_addr_list[i];
if (vif->cfg.arp_addr_cnt > HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES)
arp_addr = NULL;
if (i >= vif->cfg.arp_addr_cnt)
arp_addr = NULL;
wfx_hif_set_arp_ipv4_filter(wvif, i, arp_addr);
}
}
if (changed & BSS_CHANGED_AP_PROBE_RESP || changed & BSS_CHANGED_BEACON)
wfx_upload_ap_templates(wvif);
if (changed & BSS_CHANGED_BEACON_ENABLED)
wfx_enable_beacon(wvif, info->enable_beacon);
if (changed & BSS_CHANGED_KEEP_ALIVE)
wfx_hif_keep_alive_period(wvif,
info->max_idle_period * USEC_PER_TU / USEC_PER_MSEC);
if (changed & BSS_CHANGED_ERP_CTS_PROT)
wfx_hif_erp_use_protection(wvif, info->use_cts_prot);
if (changed & BSS_CHANGED_ERP_SLOT)
wfx_hif_slot_time(wvif, info->use_short_slot ? 9 : 20);
if (changed & BSS_CHANGED_CQM)
wfx_hif_set_rcpi_rssi_threshold(wvif, info->cqm_rssi_thold, info->cqm_rssi_hyst);
if (changed & BSS_CHANGED_TXPOWER)
wfx_hif_set_output_power(wvif, info->txpower);
if (changed & BSS_CHANGED_PS)
wfx_update_pm(wvif);
mutex_unlock(&wdev->conf_mutex);
}
static int wfx_update_tim(struct wfx_vif *wvif)
{
struct ieee80211_vif *vif = wvif_to_vif(wvif);
struct sk_buff *skb;
u16 tim_offset, tim_length;
u8 *tim_ptr;
skb = ieee80211_beacon_get_tim(wvif->wdev->hw, vif, &tim_offset,
&tim_length, 0);
if (!skb)
return -ENOENT;
tim_ptr = skb->data + tim_offset;
if (tim_offset && tim_length >= 6) {
/* Firmware handles DTIM counter internally */
tim_ptr[2] = 0;
/* Set/reset aid0 bit */
if (wfx_tx_queues_has_cab(wvif))
tim_ptr[4] |= 1;
else
tim_ptr[4] &= ~1;
}
wfx_hif_update_ie_beacon(wvif, tim_ptr, tim_length);
dev_kfree_skb(skb);
return 0;
}
static void wfx_update_tim_work(struct work_struct *work)
{
struct wfx_vif *wvif = container_of(work, struct wfx_vif, update_tim_work);
wfx_update_tim(wvif);
}
int wfx_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set)
{
struct wfx_dev *wdev = hw->priv;
struct wfx_sta_priv *sta_dev = (struct wfx_sta_priv *)&sta->drv_priv;
struct wfx_vif *wvif = wdev_to_wvif(wdev, sta_dev->vif_id);
if (!wvif) {
dev_warn(wdev->dev, "%s: received event for non-existent vif\n", __func__);
return -EIO;
}
schedule_work(&wvif->update_tim_work);
return 0;
}
void wfx_suspend_resume_mc(struct wfx_vif *wvif, enum sta_notify_cmd notify_cmd)
{
struct wfx_vif *wvif_it;
if (notify_cmd != STA_NOTIFY_AWAKE)
return;
/* Device won't be able to honor CAB if a scan is in progress on any interface. Prefer to
* skip this DTIM and wait for the next one.
*/
wvif_it = NULL;
while ((wvif_it = wvif_iterate(wvif->wdev, wvif_it)) != NULL)
if (mutex_is_locked(&wvif_it->scan_lock))
return;
if (!wfx_tx_queues_has_cab(wvif) || wvif->after_dtim_tx_allowed)
dev_warn(wvif->wdev->dev, "incorrect sequence (%d CAB in queue)",
wfx_tx_queues_has_cab(wvif));
wvif->after_dtim_tx_allowed = true;
wfx_bh_request_tx(wvif->wdev);
}
int wfx_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_ampdu_params *params)
{
/* Aggregation is implemented fully in firmware */
switch (params->action) {
case IEEE80211_AMPDU_RX_START:
case IEEE80211_AMPDU_RX_STOP:
/* Just acknowledge it to enable frame re-ordering */
return 0;
default:
/* Leave the firmware doing its business for tx aggregation */
return -EOPNOTSUPP;
}
}
int wfx_add_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *conf)
{
return 0;
}
void wfx_remove_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *conf)
{
}
void wfx_change_chanctx(struct ieee80211_hw *hw, struct ieee80211_chanctx_conf *conf, u32 changed)
{
}
int wfx_assign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
struct ieee80211_chanctx_conf *conf)
{
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
struct ieee80211_channel *ch = conf->def.chan;
WARN(wvif->channel, "channel overwrite");
wvif->channel = ch;
return 0;
}
void wfx_unassign_vif_chanctx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
struct ieee80211_chanctx_conf *conf)
{
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
struct ieee80211_channel *ch = conf->def.chan;
WARN(wvif->channel != ch, "channel mismatch");
wvif->channel = NULL;
}
int wfx_config(struct ieee80211_hw *hw, u32 changed)
{
return 0;
}
int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
int i;
struct wfx_dev *wdev = hw->priv;
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
IEEE80211_VIF_SUPPORTS_UAPSD |
IEEE80211_VIF_SUPPORTS_CQM_RSSI;
mutex_lock(&wdev->conf_mutex);
switch (vif->type) {
case NL80211_IFTYPE_STATION:
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_AP:
break;
default:
mutex_unlock(&wdev->conf_mutex);
return -EOPNOTSUPP;
}
wvif->wdev = wdev;
wvif->link_id_map = 1; /* link-id 0 is reserved for multicast */
INIT_WORK(&wvif->update_tim_work, wfx_update_tim_work);
INIT_DELAYED_WORK(&wvif->beacon_loss_work, wfx_beacon_loss_work);
init_completion(&wvif->set_pm_mode_complete);
complete(&wvif->set_pm_mode_complete);
INIT_WORK(&wvif->tx_policy_upload_work, wfx_tx_policy_upload_work);
mutex_init(&wvif->scan_lock);
init_completion(&wvif->scan_complete);
INIT_WORK(&wvif->scan_work, wfx_hw_scan_work);
wfx_tx_queues_init(wvif);
wfx_tx_policy_init(wvif);
for (i = 0; i < ARRAY_SIZE(wdev->vif); i++) {
if (!wdev->vif[i]) {
wdev->vif[i] = vif;
wvif->id = i;
break;
}
}
WARN(i == ARRAY_SIZE(wdev->vif), "try to instantiate more vif than supported");
wfx_hif_set_macaddr(wvif, vif->addr);
mutex_unlock(&wdev->conf_mutex);
wvif = NULL;
while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
/* Combo mode does not support Block Acks. We can re-enable them */
if (wvif_count(wdev) == 1)
wfx_hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
else
wfx_hif_set_block_ack_policy(wvif, 0x00, 0x00);
}
return 0;
}
void wfx_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
{
struct wfx_dev *wdev = hw->priv;
struct wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
wait_for_completion_timeout(&wvif->set_pm_mode_complete, msecs_to_jiffies(300));
wfx_tx_queues_check_empty(wvif);
mutex_lock(&wdev->conf_mutex);
WARN(wvif->link_id_map != 1, "corrupted state");
wfx_hif_reset(wvif, false);
wfx_hif_set_macaddr(wvif, NULL);
wfx_tx_policy_init(wvif);
cancel_delayed_work_sync(&wvif->beacon_loss_work);
wdev->vif[wvif->id] = NULL;
mutex_unlock(&wdev->conf_mutex);
wvif = NULL;
while ((wvif = wvif_iterate(wdev, wvif)) != NULL) {
/* Combo mode does not support Block Acks. We can re-enable them */
if (wvif_count(wdev) == 1)
wfx_hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
else
wfx_hif_set_block_ack_policy(wvif, 0x00, 0x00);
}
}
int wfx_start(struct ieee80211_hw *hw)
{
return 0;
}
void wfx_stop(struct ieee80211_hw *hw)
{
struct wfx_dev *wdev = hw->priv;
WARN_ON(!skb_queue_empty_lockless(&wdev->tx_pending));
}
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