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Subject[PATCH 18/23] wfx: add sta.c/sta.h
Date
From: Jérôme Pouiller <jerome.pouiller@silabs.com>

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
---
drivers/net/wireless/silabs/wfx/sta.c | 807 ++++++++++++++++++++++++++
drivers/net/wireless/silabs/wfx/sta.h | 73 +++
2 files changed, 880 insertions(+)
create mode 100644 drivers/net/wireless/silabs/wfx/sta.c
create mode 100644 drivers/net/wireless/silabs/wfx/sta.h

diff --git a/drivers/net/wireless/silabs/wfx/sta.c b/drivers/net/wireless/silabs/wfx/sta.c
new file mode 100644
index 000000000000..2320a81eae0b
--- /dev/null
+++ b/drivers/net/wireless/silabs/wfx/sta.c
@@ -0,0 +1,807 @@
+// 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;
+ // WFx only support 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)
+{
+ const struct 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,
+ }
+ };
+
+ if (!filter_beacon) {
+ hif_beacon_filter_control(wvif, 0, 1);
+ } else {
+ hif_set_beacon_filter_table(wvif, 3, filter_ies);
+ 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)
+{
+ struct wfx_vif *wvif = NULL;
+ struct wfx_dev *wdev = hw->priv;
+ bool filter_bssid, filter_prbreq, filter_beacon;
+
+ // 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;
+
+ // In AP mode, chip can reply to probe request itself
+ if (*total_flags & FIF_PROBE_REQ &&
+ wvif->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;
+ 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;
+
+ WARN(!wvif->vif->bss_conf.assoc && enable_ps,
+ "enable_ps is reliable only if associated");
+ if (wdev_to_wvif(wvif->wdev, 0))
+ chan0 = wdev_to_wvif(wvif->wdev, 0)->vif->bss_conf.chandef.chan;
+ if (wdev_to_wvif(wvif->wdev, 1))
+ chan1 = wdev_to_wvif(wvif->wdev, 1)->vif->bss_conf.chandef.chan;
+ if (chan0 && chan1 && chan0->hw_value != chan1->hw_value &&
+ wvif->vif->type != NL80211_IFTYPE_AP) {
+ // It is necessary to enable powersave if channels
+ // are different.
+ if (enable_ps)
+ *enable_ps = true;
+ if (wvif->wdev->force_ps_timeout > -1)
+ return wvif->wdev->force_ps_timeout;
+ else if (wfx_api_older_than(wvif->wdev, 3, 2))
+ return 0;
+ else
+ return 30;
+ }
+ if (enable_ps)
+ *enable_ps = wvif->vif->bss_conf.ps;
+ if (wvif->wdev->force_ps_timeout > -1)
+ return wvif->wdev->force_ps_timeout;
+ else if (wvif->vif->bss_conf.assoc && wvif->vif->bss_conf.ps)
+ return conf->dynamic_ps_timeout;
+ else
+ return -1;
+}
+
+int wfx_update_pm(struct wfx_vif *wvif)
+{
+ int ps_timeout;
+ bool ps;
+
+ if (!wvif->vif->bss_conf.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 hif_set_pm(wvif, ps, ps_timeout);
+}
+
+int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ 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);
+ hif_set_edca_queue_params(wvif, queue, params);
+ if (wvif->vif->type == NL80211_IFTYPE_STATION &&
+ old_uapsd != wvif->uapsd_mask) {
+ 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)
+ hif_rts_threshold(wvif, value);
+ return 0;
+}
+
+/* WSM callbacks */
+
+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
+ */
+ int rcpi_rssi;
+ int cqm_evt;
+
+ rcpi_rssi = raw_rcpi_rssi / 2 - 110;
+ if (rcpi_rssi <= wvif->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(wvif->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_bss_conf *bss_conf = &wvif->vif->bss_conf;
+
+ ieee80211_beacon_loss(wvif->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;
+
+ 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);
+ hif_reset(wvif, false);
+ wfx_tx_policy_init(wvif);
+ if (wvif_count(wdev) <= 1)
+ 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)
+ 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);
+ 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?
+ 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 sk_buff *skb;
+
+ skb = ieee80211_beacon_get(wvif->wdev->hw, wvif->vif);
+ if (!skb)
+ return -ENOMEM;
+ 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, wvif->vif);
+ if (!skb)
+ return -ENOMEM;
+ 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 sk_buff *skb = ieee80211_beacon_get(wvif->wdev->hw, wvif->vif);
+ 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;
+ hif_set_mfp(wvif, *ptr & BIT(7), *ptr & BIT(6));
+ }
+}
+
+int wfx_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif)
+{
+ 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 = 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 wfx_vif *wvif = (struct wfx_vif *)vif->drv_priv;
+
+ wfx_reset(wvif);
+}
+
+static void wfx_join(struct wfx_vif *wvif)
+{
+ int ret;
+ struct ieee80211_bss_conf *conf = &wvif->vif->bss_conf;
+ struct cfg80211_bss *bss = NULL;
+ u8 ssid[IEEE80211_MAX_SSID_LEN];
+ const u8 *ssidie = NULL;
+ int ssidlen = 0;
+
+ 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 && !conf->ibss_joined) {
+ wfx_tx_unlock(wvif->wdev);
+ return;
+ }
+
+ rcu_read_lock(); // protect ssidie
+ if (bss)
+ ssidie = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
+ if (ssidie) {
+ ssidlen = ssidie[1];
+ if (ssidlen > IEEE80211_MAX_SSID_LEN)
+ ssidlen = IEEE80211_MAX_SSID_LEN;
+ memcpy(ssid, &ssidie[2], ssidlen);
+ }
+ rcu_read_unlock();
+
+ cfg80211_put_bss(wvif->wdev->hw->wiphy, bss);
+
+ wvif->join_in_progress = true;
+ ret = hif_join(wvif, conf, wvif->channel, ssid, ssidlen);
+ if (ret) {
+ ieee80211_connection_loss(wvif->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_sta *sta = NULL;
+ int ampdu_density = 0;
+ bool greenfield = false;
+
+ rcu_read_lock(); // protect sta
+ if (info->bssid && !info->ibss_joined)
+ sta = ieee80211_find_sta(wvif->vif, info->bssid);
+ if (sta && sta->ht_cap.ht_supported)
+ ampdu_density = sta->ht_cap.ampdu_density;
+ if (sta && sta->ht_cap.ht_supported &&
+ !(info->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT))
+ greenfield = !!(sta->ht_cap.cap & IEEE80211_HT_CAP_GRN_FLD);
+ rcu_read_unlock();
+
+ wvif->join_in_progress = false;
+ hif_set_association_mode(wvif, ampdu_density, greenfield,
+ info->use_short_preamble);
+ hif_keep_alive_period(wvif, 0);
+ // beacon_loss_count is defined to 7 in net/mac80211/mlme.c. Let's use
+ // the same value.
+ hif_set_bss_params(wvif, info->aid, 7);
+ 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);
+ }
+ hif_beacon_transmit(wvif, enable);
+}
+
+void wfx_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *info, u32 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 (info->assoc || info->ibss_joined)
+ wfx_join_finalize(wvif, info);
+ else if (!info->assoc && vif->type == NL80211_IFTYPE_STATION)
+ wfx_reset(wvif);
+ else
+ dev_warn(wdev->dev, "%s: misunderstood change: ASSOC\n",
+ __func__);
+ }
+
+ if (changed & BSS_CHANGED_BEACON_INFO) {
+ if (vif->type != NL80211_IFTYPE_STATION)
+ dev_warn(wdev->dev, "%s: misunderstood change: BEACON_INFO\n",
+ __func__);
+ 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 = &info->arp_addr_list[i];
+
+ if (info->arp_addr_cnt > HIF_MAX_ARP_IP_ADDRTABLE_ENTRIES)
+ arp_addr = NULL;
+ if (i >= info->arp_addr_cnt)
+ arp_addr = NULL;
+ 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)
+ hif_keep_alive_period(wvif, info->max_idle_period *
+ USEC_PER_TU / USEC_PER_MSEC);
+
+ if (changed & BSS_CHANGED_ERP_CTS_PROT)
+ hif_erp_use_protection(wvif, info->use_cts_prot);
+
+ if (changed & BSS_CHANGED_ERP_SLOT)
+ hif_slot_time(wvif, info->use_short_slot ? 9 : 20);
+
+ if (changed & BSS_CHANGED_CQM)
+ hif_set_rcpi_rssi_threshold(wvif, info->cqm_rssi_thold,
+ info->cqm_rssi_hyst);
+
+ if (changed & BSS_CHANGED_TXPOWER)
+ 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 sk_buff *skb;
+ u16 tim_offset, tim_length;
+ u8 *tim_ptr;
+
+ skb = ieee80211_beacon_get_tim(wvif->wdev->hw, wvif->vif,
+ &tim_offset, &tim_length);
+ if (!skb)
+ return -ENOENT;
+ tim_ptr = skb->data + tim_offset;
+
+ if (tim_offset && tim_length >= 6) {
+ /* Ignore DTIM count from mac80211:
+ * firmware handles DTIM 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;
+ }
+
+ 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)
+{
+ if (notify_cmd != STA_NOTIFY_AWAKE)
+ return;
+ WARN(!wfx_tx_queues_has_cab(wvif), "incorrect sequence");
+ WARN(wvif->after_dtim_tx_allowed, "incorrect sequence");
+ 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 -ENOTSUPP;
+ }
+}
+
+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_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_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, ret = 0;
+ 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;
+ }
+
+ // FIXME: prefer use of container_of() to get vif
+ wvif->vif = vif;
+ 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");
+
+ 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)
+ hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
+ else
+ hif_set_block_ack_policy(wvif, 0x00, 0x00);
+ }
+ return ret;
+}
+
+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");
+
+ hif_reset(wvif, false);
+ hif_set_macaddr(wvif, NULL);
+ wfx_tx_policy_init(wvif);
+
+ cancel_delayed_work_sync(&wvif->beacon_loss_work);
+ wdev->vif[wvif->id] = NULL;
+ wvif->vif = 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)
+ hif_set_block_ack_policy(wvif, 0xFF, 0xFF);
+ else
+ 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));
+}
diff --git a/drivers/net/wireless/silabs/wfx/sta.h b/drivers/net/wireless/silabs/wfx/sta.h
new file mode 100644
index 000000000000..d7b5df5ea4e6
--- /dev/null
+++ b/drivers/net/wireless/silabs/wfx/sta.h
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Implementation of mac80211 API.
+ *
+ * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
+ * Copyright (c) 2010, ST-Ericsson
+ */
+#ifndef WFX_STA_H
+#define WFX_STA_H
+
+#include <net/mac80211.h>
+
+struct wfx_dev;
+struct wfx_vif;
+
+struct wfx_sta_priv {
+ int link_id;
+ int vif_id;
+};
+
+// mac80211 interface
+int wfx_start(struct ieee80211_hw *hw);
+void wfx_stop(struct ieee80211_hw *hw);
+int wfx_config(struct ieee80211_hw *hw, u32 changed);
+int wfx_set_rts_threshold(struct ieee80211_hw *hw, u32 value);
+void wfx_set_default_unicast_key(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif, int idx);
+void wfx_configure_filter(struct ieee80211_hw *hw, unsigned int changed_flags,
+ unsigned int *total_flags, u64 unused);
+
+int wfx_add_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
+void wfx_remove_interface(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
+int wfx_start_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
+void wfx_stop_ap(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
+int wfx_join_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
+void wfx_leave_ibss(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
+int wfx_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ u16 queue, const struct ieee80211_tx_queue_params *params);
+void wfx_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_bss_conf *info, u32 changed);
+int wfx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta);
+int wfx_sta_remove(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta);
+void wfx_sta_notify(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ enum sta_notify_cmd cmd, struct ieee80211_sta *sta);
+int wfx_set_tim(struct ieee80211_hw *hw, struct ieee80211_sta *sta, bool set);
+int wfx_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_ampdu_params *params);
+int wfx_add_chanctx(struct ieee80211_hw *hw,
+ struct ieee80211_chanctx_conf *conf);
+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_chanctx_conf *conf);
+void wfx_unassign_vif_chanctx(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_chanctx_conf *conf);
+
+// WSM Callbacks
+void wfx_cooling_timeout_work(struct work_struct *work);
+void wfx_suspend_hot_dev(struct wfx_dev *wdev, enum sta_notify_cmd cmd);
+void wfx_suspend_resume_mc(struct wfx_vif *wvif, enum sta_notify_cmd cmd);
+void wfx_event_report_rssi(struct wfx_vif *wvif, u8 raw_rcpi_rssi);
+int wfx_update_pm(struct wfx_vif *wvif);
+
+// Other Helpers
+void wfx_reset(struct wfx_vif *wvif);
+u32 wfx_rate_mask_to_hw(struct wfx_dev *wdev, u32 rates);
+
+#endif /* WFX_STA_H */
--
2.28.0
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