Date: Fri, 21 Jun 2024 15:52:00 +0800
From: David Lin <yu-hao.lin@....com>
To: linux-wireless@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	briannorris@...omium.org,
	kvalo@...nel.org,
	francesco@...cini.it,
	tsung-hsien.hsieh@....com,
	David Lin <yu-hao.lin@....com>
Subject: [PATCH 35/43] wifi: nxpwifi: add uap_event.c

Signed-off-by: David Lin <yu-hao.lin@....com>
---
 drivers/net/wireless/nxp/nxpwifi/uap_event.c | 483 +++++++++++++++++++
 1 file changed, 483 insertions(+)
 create mode 100644 drivers/net/wireless/nxp/nxpwifi/uap_event.c

diff --git a/drivers/net/wireless/nxp/nxpwifi/uap_event.c b/drivers/net/wireless/nxp/nxpwifi/uap_event.c
new file mode 100644
index 000000000000..2c15b01ec018
--- /dev/null
+++ b/drivers/net/wireless/nxp/nxpwifi/uap_event.c
@@ -0,0 +1,483 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * NXP Wireless LAN device driver: AP event handling
+ *
+ * Copyright 2011-2024 NXP
+ */
+
+#include "decl.h"
+#include "main.h"
+#include "cmdevt.h"
+#include "11n.h"
+
+#define NXPWIFI_BSS_START_EVT_FIX_SIZE    12
+
+static int
+nxpwifi_uap_event_ps_awake(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+
+	if (!adapter->pps_uapsd_mode &&
+	    priv->media_connected && adapter->sleep_period.period) {
+		adapter->pps_uapsd_mode = true;
+		nxpwifi_dbg(adapter, EVENT,
+			    "event: PPS/UAPSD mode activated\n");
+	}
+	adapter->tx_lock_flag = false;
+	if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
+		if (nxpwifi_check_last_packet_indication(priv)) {
+			if (adapter->data_sent ||
+			    (adapter->if_ops.is_port_ready &&
+			     !adapter->if_ops.is_port_ready(priv))) {
+				adapter->ps_state = PS_STATE_AWAKE;
+				adapter->pm_wakeup_card_req = false;
+				adapter->pm_wakeup_fw_try = false;
+			} else {
+				if (!nxpwifi_send_null_packet
+				    (priv,
+				     NXPWIFI_TxPD_POWER_MGMT_NULL_PACKET |
+				     NXPWIFI_TxPD_POWER_MGMT_LAST_PACKET))
+					adapter->ps_state = PS_STATE_SLEEP;
+			}
+
+			return 0;
+		}
+	}
+
+	adapter->ps_state = PS_STATE_AWAKE;
+	adapter->pm_wakeup_card_req = false;
+	adapter->pm_wakeup_fw_try = false;
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_ps_sleep(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+
+	adapter->ps_state = PS_STATE_PRE_SLEEP;
+	nxpwifi_check_ps_cond(adapter);
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_sta_deauth(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+	u8 *deauth_mac;
+
+	deauth_mac = adapter->event_body +
+		     NXPWIFI_UAP_EVENT_EXTRA_HEADER;
+	cfg80211_del_sta(priv->netdev, deauth_mac, GFP_KERNEL);
+
+	if (priv->ap_11n_enabled) {
+		nxpwifi_11n_del_rx_reorder_tbl_by_ta(priv, deauth_mac);
+		nxpwifi_del_tx_ba_stream_tbl_by_ra(priv, deauth_mac);
+	}
+	nxpwifi_wmm_del_peer_ra_list(priv, deauth_mac);
+	nxpwifi_del_sta_entry(priv, deauth_mac);
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_sta_assoc(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+	struct station_info *sinfo;
+	struct nxpwifi_assoc_event *event;
+	struct nxpwifi_sta_node *node;
+	int len, i;
+
+	sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL);
+	if (!sinfo)
+		return -ENOMEM;
+
+	event = (struct nxpwifi_assoc_event *)
+		(adapter->event_body + NXPWIFI_UAP_EVENT_EXTRA_HEADER);
+	if (le16_to_cpu(event->type) == TLV_TYPE_UAP_MGMT_FRAME) {
+		len = -1;
+
+		if (ieee80211_is_assoc_req(event->frame_control))
+			len = 0;
+		else if (ieee80211_is_reassoc_req(event->frame_control))
+			/* There will be ETH_ALEN bytes of
+			 * current_ap_addr before the re-assoc ies.
+			 */
+			len = ETH_ALEN;
+
+		if (len != -1) {
+			sinfo->assoc_req_ies = &event->data[len];
+			len = (u8 *)sinfo->assoc_req_ies -
+			      (u8 *)&event->frame_control;
+			sinfo->assoc_req_ies_len =
+				le16_to_cpu(event->len) - (u16)len;
+		}
+	}
+	cfg80211_new_sta(priv->netdev, event->sta_addr, sinfo,
+			 GFP_KERNEL);
+
+	node = nxpwifi_add_sta_entry(priv, event->sta_addr);
+	if (!node) {
+		nxpwifi_dbg(adapter, ERROR,
+			    "could not create station entry!\n");
+		kfree(sinfo);
+		return -1;
+	}
+
+	if (!priv->ap_11n_enabled) {
+		kfree(sinfo);
+		return 0;
+	}
+
+	nxpwifi_set_sta_ht_cap(priv, sinfo->assoc_req_ies,
+			       sinfo->assoc_req_ies_len, node);
+
+	for (i = 0; i < MAX_NUM_TID; i++) {
+		if (node->is_11n_enabled)
+			node->ampdu_sta[i] =
+				      priv->aggr_prio_tbl[i].ampdu_user;
+		else
+			node->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
+	}
+	memset(node->rx_seq, 0xff, sizeof(node->rx_seq));
+	kfree(sinfo);
+
+	return 0;
+}
+
+static int
+nxpwifi_check_uap_capabilities(struct nxpwifi_private *priv,
+			       struct sk_buff *event)
+{
+	int evt_len;
+	u8 *curr;
+	u16 tlv_len;
+	struct nxpwifi_ie_types_data *tlv_hdr;
+	struct ieee_types_wmm_parameter *wmm_param_ie = NULL;
+	int mask = IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK;
+
+	priv->wmm_enabled = false;
+	skb_pull(event, NXPWIFI_BSS_START_EVT_FIX_SIZE);
+	evt_len = event->len;
+	curr = event->data;
+
+	nxpwifi_dbg_dump(priv->adapter, EVT_D, "uap capabilities:",
+			 event->data, event->len);
+
+	skb_push(event, NXPWIFI_BSS_START_EVT_FIX_SIZE);
+
+	while ((evt_len >= sizeof(tlv_hdr->header))) {
+		tlv_hdr = (struct nxpwifi_ie_types_data *)curr;
+		tlv_len = le16_to_cpu(tlv_hdr->header.len);
+
+		if (evt_len < tlv_len + sizeof(tlv_hdr->header))
+			break;
+
+		switch (le16_to_cpu(tlv_hdr->header.type)) {
+		case WLAN_EID_HT_CAPABILITY:
+			priv->ap_11n_enabled = true;
+			break;
+
+		case WLAN_EID_VHT_CAPABILITY:
+			priv->ap_11ac_enabled = true;
+			break;
+
+		case WLAN_EID_VENDOR_SPECIFIC:
+			/* Point the regular IEEE IE 2 bytes into the NXP IE
+			 * and setup the IEEE IE type and length byte fields
+			 */
+			wmm_param_ie = (void *)(curr + 2);
+			wmm_param_ie->vend_hdr.len = (u8)tlv_len;
+			wmm_param_ie->vend_hdr.element_id =
+						WLAN_EID_VENDOR_SPECIFIC;
+			nxpwifi_dbg(priv->adapter, EVENT,
+				    "info: check uap capabilities:\t"
+				    "wmm parameter set count: %d\n",
+				    wmm_param_ie->qos_info_bitmap & mask);
+
+			nxpwifi_wmm_setup_ac_downgrade(priv);
+			priv->wmm_enabled = true;
+			nxpwifi_wmm_setup_queue_priorities(priv, wmm_param_ie);
+			break;
+
+		default:
+			break;
+		}
+
+		curr += (tlv_len + sizeof(tlv_hdr->header));
+		evt_len -= (tlv_len + sizeof(tlv_hdr->header));
+	}
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_bss_start(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+
+	priv->port_open = false;
+	eth_hw_addr_set(priv->netdev, adapter->event_body + 2);
+	if (priv->hist_data)
+		nxpwifi_hist_data_reset(priv);
+	return nxpwifi_check_uap_capabilities(priv, adapter->event_skb);
+}
+
+static int
+nxpwifi_uap_event_addba(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+
+	if (priv->media_connected)
+		nxpwifi_send_cmd(priv, HOST_CMD_11N_ADDBA_RSP,
+				 HOST_ACT_GEN_SET, 0,
+				 adapter->event_body, false);
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_delba(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+
+	if (priv->media_connected)
+		nxpwifi_11n_delete_ba_stream(priv, adapter->event_body);
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_ba_stream_timeout(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+	struct host_cmd_ds_11n_batimeout *ba_timeout;
+
+	if (priv->media_connected) {
+		ba_timeout = (void *)adapter->event_body;
+		nxpwifi_11n_ba_stream_timeout(priv, ba_timeout);
+	}
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_amsdu_aggr_ctrl(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+	u16 ctrl;
+
+	ctrl = get_unaligned_le16(adapter->event_body);
+	nxpwifi_dbg(adapter, EVENT,
+		    "event: AMSDU_AGGR_CTRL %d\n", ctrl);
+
+	if (priv->media_connected) {
+		adapter->tx_buf_size =
+			min_t(u16, adapter->curr_tx_buf_size, ctrl);
+		nxpwifi_dbg(adapter, EVENT,
+			    "event: tx_buf_size %d\n",
+			    adapter->tx_buf_size);
+	}
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_bss_idle(struct nxpwifi_private *priv)
+{
+	priv->media_connected = false;
+	priv->port_open = false;
+	nxpwifi_clean_txrx(priv);
+	nxpwifi_del_all_sta_list(priv);
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_bss_active(struct nxpwifi_private *priv)
+{
+	priv->media_connected = true;
+	priv->port_open = true;
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_mic_countermeasures(struct nxpwifi_private *priv)
+{
+	/* For future development */
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_radar_detected(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+
+	return nxpwifi_11h_handle_radar_detected(priv, adapter->event_skb);
+}
+
+static int
+nxpwifi_uap_event_channel_report_rdy(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+
+	return nxpwifi_11h_handle_chanrpt_ready(priv, adapter->event_skb);
+}
+
+static int
+nxpwifi_uap_event_tx_data_pause(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+
+	nxpwifi_process_tx_pause_event(priv, adapter->event_skb);
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_ext_scan_report(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+	void *buf = adapter->event_skb->data;
+	int ret = 0;
+
+	if (adapter->ext_scan)
+		ret = nxpwifi_handle_event_ext_scan_report(priv, buf);
+
+	return ret;
+}
+
+static int
+nxpwifi_uap_event_rxba_sync(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+
+	nxpwifi_11n_rxba_sync_event(priv, adapter->event_body,
+				    adapter->event_skb->len -
+				    sizeof(adapter->event_cause));
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_remain_on_chan_expired(struct nxpwifi_private *priv)
+{
+	cfg80211_remain_on_channel_expired(&priv->wdev,
+					   priv->roc_cfg.cookie,
+					   &priv->roc_cfg.chan,
+					   GFP_ATOMIC);
+	memset(&priv->roc_cfg, 0x00, sizeof(struct nxpwifi_roc_cfg));
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_multi_chan_info(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+
+	nxpwifi_process_multi_chan_event(priv, adapter->event_skb);
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_tx_status_report(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+
+	nxpwifi_parse_tx_status_event(priv, adapter->event_body);
+
+	return 0;
+}
+
+static int
+nxpwifi_uap_event_bt_coex_wlan_para_change(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+
+	nxpwifi_bt_coex_wlan_param_update_event(priv, adapter->event_skb);
+
+	return 0;
+}
+
+static const struct nxpwifi_evt_entry evt_table_uap[] = {
+	{.event_cause = EVENT_PS_AWAKE,
+	 .event_handler = nxpwifi_uap_event_ps_awake},
+	{.event_cause = EVENT_PS_SLEEP,
+	 .event_handler = nxpwifi_uap_event_ps_sleep},
+	{.event_cause = EVENT_UAP_STA_DEAUTH,
+	 .event_handler = nxpwifi_uap_event_sta_deauth},
+	{.event_cause = EVENT_UAP_STA_ASSOC,
+	 .event_handler = nxpwifi_uap_event_sta_assoc},
+	{.event_cause = EVENT_UAP_BSS_START,
+	 .event_handler = nxpwifi_uap_event_bss_start},
+	{.event_cause = EVENT_ADDBA,
+	 .event_handler = nxpwifi_uap_event_addba},
+	{.event_cause = EVENT_DELBA,
+	 .event_handler = nxpwifi_uap_event_delba},
+	{.event_cause = EVENT_BA_STREAM_TIEMOUT,
+	 .event_handler = nxpwifi_uap_event_ba_stream_timeout},
+	{.event_cause = EVENT_AMSDU_AGGR_CTRL,
+	 .event_handler = nxpwifi_uap_event_amsdu_aggr_ctrl},
+	{.event_cause = EVENT_UAP_BSS_IDLE,
+	 .event_handler = nxpwifi_uap_event_bss_idle},
+	{.event_cause = EVENT_UAP_BSS_ACTIVE,
+	 .event_handler = nxpwifi_uap_event_bss_active},
+	{.event_cause = EVENT_UAP_MIC_COUNTERMEASURES,
+	 .event_handler = nxpwifi_uap_event_mic_countermeasures},
+	{.event_cause = EVENT_RADAR_DETECTED,
+	 .event_handler = nxpwifi_uap_event_radar_detected},
+	{.event_cause = EVENT_CHANNEL_REPORT_RDY,
+	 .event_handler = nxpwifi_uap_event_channel_report_rdy},
+	{.event_cause = EVENT_TX_DATA_PAUSE,
+	 .event_handler = nxpwifi_uap_event_tx_data_pause},
+	{.event_cause = EVENT_EXT_SCAN_REPORT,
+	 .event_handler = nxpwifi_uap_event_ext_scan_report},
+	{.event_cause = EVENT_RXBA_SYNC,
+	 .event_handler = nxpwifi_uap_event_rxba_sync},
+	{.event_cause = EVENT_REMAIN_ON_CHAN_EXPIRED,
+	 .event_handler = nxpwifi_uap_event_remain_on_chan_expired},
+	{.event_cause = EVENT_MULTI_CHAN_INFO,
+	 .event_handler = nxpwifi_uap_event_multi_chan_info},
+	{.event_cause = EVENT_TX_STATUS_REPORT,
+	 .event_handler = nxpwifi_uap_event_tx_status_report},
+	{.event_cause = EVENT_BT_COEX_WLAN_PARA_CHANGE,
+	 .event_handler = nxpwifi_uap_event_bt_coex_wlan_para_change},
+};
+
+/* This function handles AP interface specific events generated by firmware.
+ *
+ * Event specific routines are called by this function based
+ * upon the generated event cause.
+ */
+int nxpwifi_process_uap_event(struct nxpwifi_private *priv)
+{
+	struct nxpwifi_adapter *adapter = priv->adapter;
+	u32 eventcause = adapter->event_cause;
+	int evt, ret = 0;
+
+	for (evt = 0; evt < ARRAY_SIZE(evt_table_uap); evt++) {
+		if (eventcause == evt_table_uap[evt].event_cause) {
+			if (evt_table_uap[evt].event_handler)
+				ret = evt_table_uap[evt].event_handler(priv);
+			break;
+		}
+	}
+
+	if (evt == ARRAY_SIZE(evt_table_uap))
+		nxpwifi_dbg(adapter, EVENT,
+			    "%s: unknown event id: %#x\n",
+			    __func__, eventcause);
+	else
+		nxpwifi_dbg(adapter, EVENT,
+			    "%s: event id: %#x\n",
+			    __func__, eventcause);
+
+	return ret;
+}
-- 
2.34.1

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