[deliverable/linux.git] / drivers / net / wireless / mwifiex / uap_event.c

/*
 * Marvell Wireless LAN device driver: AP event handling
 *
 * Copyright (C) 2012-2014, Marvell International Ltd.
 *
 * This software file (the "File") is distributed by Marvell International
 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
 * (the "License").  You may use, redistribute and/or modify this File in
 * accordance with the terms and conditions of the License, a copy of which
 * is available by writing to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 * this warranty disclaimer.
 */

#include "decl.h"
#include "main.h"
#include "11n.h"


/*
 * This function handles AP interface specific events generated by firmware.
 *
 * Event specific routines are called by this function based
 * upon the generated event cause.
 *
 *
 * Events supported for AP -
 *      - EVENT_UAP_STA_ASSOC
 *      - EVENT_UAP_STA_DEAUTH
 *      - EVENT_UAP_BSS_ACTIVE
 *      - EVENT_UAP_BSS_START
 *      - EVENT_UAP_BSS_IDLE
 *      - EVENT_UAP_MIC_COUNTERMEASURES:
 */
int mwifiex_process_uap_event(struct mwifiex_private *priv)
{
	struct mwifiex_adapter *adapter = priv->adapter;
	int len, i;
	u32 eventcause = adapter->event_cause;
	struct station_info sinfo;
	struct mwifiex_assoc_event *event;
	struct mwifiex_sta_node *node;
	u8 *deauth_mac;
	struct host_cmd_ds_11n_batimeout *ba_timeout;
	u16 ctrl;

	switch (eventcause) {
	case EVENT_UAP_STA_ASSOC:
		memset(&sinfo, 0, sizeof(sinfo));
		event = (struct mwifiex_assoc_event *)
			(adapter->event_body + MWIFIEX_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 = mwifiex_add_sta_entry(priv, event->sta_addr);
		if (!node) {
			dev_warn(adapter->dev,
				 "could not create station entry!\n");
			return -1;
		}

		if (!priv->ap_11n_enabled)
			break;

		mwifiex_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));
		break;
	case EVENT_UAP_STA_DEAUTH:
		deauth_mac = adapter->event_body +
			     MWIFIEX_UAP_EVENT_EXTRA_HEADER;
		cfg80211_del_sta(priv->netdev, deauth_mac, GFP_KERNEL);

		if (priv->ap_11n_enabled) {
			mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, deauth_mac);
			mwifiex_del_tx_ba_stream_tbl_by_ra(priv, deauth_mac);
		}
		mwifiex_wmm_del_peer_ra_list(priv, deauth_mac);
		mwifiex_del_sta_entry(priv, deauth_mac);
		break;
	case EVENT_UAP_BSS_IDLE:
		priv->media_connected = false;
		if (netif_carrier_ok(priv->netdev))
			netif_carrier_off(priv->netdev);
		mwifiex_stop_net_dev_queue(priv->netdev, adapter);

		mwifiex_clean_txrx(priv);
		mwifiex_del_all_sta_list(priv);
		break;
	case EVENT_UAP_BSS_ACTIVE:
		priv->media_connected = true;
		if (!netif_carrier_ok(priv->netdev))
			netif_carrier_on(priv->netdev);
		mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
		break;
	case EVENT_UAP_BSS_START:
		dev_dbg(adapter->dev, "AP EVENT: event id: %#x\n", eventcause);
		memcpy(priv->netdev->dev_addr, adapter->event_body + 2,
		       ETH_ALEN);
		if (priv->hist_data)
			mwifiex_hist_data_reset(priv);
		break;
	case EVENT_UAP_MIC_COUNTERMEASURES:
		/* For future development */
		dev_dbg(adapter->dev, "AP EVENT: event id: %#x\n", eventcause);
		break;
	case EVENT_AMSDU_AGGR_CTRL:
		ctrl = le16_to_cpu(*(__le16 *)adapter->event_body);
		dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n", ctrl);

		if (priv->media_connected) {
			adapter->tx_buf_size =
				min_t(u16, adapter->curr_tx_buf_size, ctrl);
			dev_dbg(adapter->dev, "event: tx_buf_size %d\n",
				adapter->tx_buf_size);
		}
		break;
	case EVENT_ADDBA:
		dev_dbg(adapter->dev, "event: ADDBA Request\n");
		if (priv->media_connected)
			mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
					 HostCmd_ACT_GEN_SET, 0,
					 adapter->event_body, false);
		break;
	case EVENT_DELBA:
		dev_dbg(adapter->dev, "event: DELBA Request\n");
		if (priv->media_connected)
			mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
		break;
	case EVENT_BA_STREAM_TIEMOUT:
		dev_dbg(adapter->dev, "event:  BA Stream timeout\n");
		if (priv->media_connected) {
			ba_timeout = (void *)adapter->event_body;
			mwifiex_11n_ba_stream_timeout(priv, ba_timeout);
		}
		break;
	case EVENT_EXT_SCAN_REPORT:
		dev_dbg(adapter->dev, "event: EXT_SCAN Report\n");
		if (adapter->ext_scan)
			return mwifiex_handle_event_ext_scan_report(priv,
						adapter->event_skb->data);
		break;
	case EVENT_TX_STATUS_REPORT:
		dev_dbg(adapter->dev, "event: TX_STATUS Report\n");
		mwifiex_parse_tx_status_event(priv, adapter->event_body);
		break;
	case EVENT_PS_SLEEP:
		dev_dbg(adapter->dev, "info: EVENT: SLEEP\n");

		adapter->ps_state = PS_STATE_PRE_SLEEP;

		mwifiex_check_ps_cond(adapter);
		break;

	case EVENT_PS_AWAKE:
		dev_dbg(adapter->dev, "info: EVENT: AWAKE\n");
		if (!adapter->pps_uapsd_mode &&
		    priv->media_connected && adapter->sleep_period.period) {
				adapter->pps_uapsd_mode = true;
				dev_dbg(adapter->dev,
					"event: PPS/UAPSD mode activated\n");
		}
		adapter->tx_lock_flag = false;
		if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
			if (mwifiex_check_last_packet_indication(priv)) {
				if (adapter->data_sent) {
					adapter->ps_state = PS_STATE_AWAKE;
					adapter->pm_wakeup_card_req = false;
					adapter->pm_wakeup_fw_try = false;
					break;
				}
				if (!mwifiex_send_null_packet
					(priv,
					 MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET |
					 MWIFIEX_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;
		break;

	case EVENT_CHANNEL_REPORT_RDY:
		dev_dbg(adapter->dev, "event: Channel Report\n");
		mwifiex_11h_handle_chanrpt_ready(priv, adapter->event_skb);
		break;
	default:
		dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
			eventcause);
		break;
	}

	return 0;
}

/* This function deletes station entry from associated station list.
 * Also if both AP and STA are 11n enabled, RxReorder tables and TxBA stream
 * tables created for this station are deleted.
 */
void mwifiex_uap_del_sta_data(struct mwifiex_private *priv,
			      struct mwifiex_sta_node *node)
{
	if (priv->ap_11n_enabled && node->is_11n_enabled) {
		mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, node->mac_addr);
		mwifiex_del_tx_ba_stream_tbl_by_ra(priv, node->mac_addr);
	}
	mwifiex_del_sta_entry(priv, node->mac_addr);

	return;
}
Commit	Line	Data
3d99d987 AP	1	/*
	2	* Marvell Wireless LAN device driver: AP event handling
	3	*
65da33f5	4	* Copyright (C) 2012-2014, Marvell International Ltd.
3d99d987 AP	5	*
	6	* This software file (the "File") is distributed by Marvell International
	7	* Ltd. under the terms of the GNU General Public License Version 2, June 1991
	8	* (the "License"). You may use, redistribute and/or modify this File in
	9	* accordance with the terms and conditions of the License, a copy of which
	10	* is available by writing to the Free Software Foundation, Inc.,
	11	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
	12	* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
	13	*
	14	* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
	15	* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
	16	* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
	17	* this warranty disclaimer.
	18	*/
	19
	20	#include "decl.h"
	21	#include "main.h"
5a009adf	22	#include "11n.h"
3d99d987	23
017a92a1	24
017a92a1	25
017a92a1	26
3d99d987 AP	27	/*
	28	* This function handles AP interface specific events generated by firmware.
	29	*
	30	* Event specific routines are called by this function based
	31	* upon the generated event cause.
	32	*
	33	*
	34	* Events supported for AP -
	35	* - EVENT_UAP_STA_ASSOC
	36	* - EVENT_UAP_STA_DEAUTH
	37	* - EVENT_UAP_BSS_ACTIVE
	38	* - EVENT_UAP_BSS_START
	39	* - EVENT_UAP_BSS_IDLE
	40	* - EVENT_UAP_MIC_COUNTERMEASURES:
	41	*/
	42	int mwifiex_process_uap_event(struct mwifiex_private *priv)
	43	{
	44	struct mwifiex_adapter *adapter = priv->adapter;
017a92a1	45	int len, i;
3d99d987 AP	46	u32 eventcause = adapter->event_cause;
	47	struct station_info sinfo;
	48	struct mwifiex_assoc_event *event;
017a92a1 AP	49	struct mwifiex_sta_node *node;
017a92a1 AP	50	u8 *deauth_mac;
5a009adf	51	struct host_cmd_ds_11n_batimeout *ba_timeout;
8dd4372e	52	u16 ctrl;
3d99d987 AP	53
	54	switch (eventcause) {
	55	case EVENT_UAP_STA_ASSOC:
	56	memset(&sinfo, 0, sizeof(sinfo));
	57	event = (struct mwifiex_assoc_event *)
	58	(adapter->event_body + MWIFIEX_UAP_EVENT_EXTRA_HEADER);
	59	if (le16_to_cpu(event->type) == TLV_TYPE_UAP_MGMT_FRAME) {
	60	len = -1;
	61
	62	if (ieee80211_is_assoc_req(event->frame_control))
	63	len = 0;
	64	else if (ieee80211_is_reassoc_req(event->frame_control))
	65	/* There will be ETH_ALEN bytes of
	66	* current_ap_addr before the re-assoc ies.
	67	*/
	68	len = ETH_ALEN;
	69
	70	if (len != -1) {
3d99d987 AP	71	sinfo.assoc_req_ies = &event->data[len];
	72	len = (u8 *)sinfo.assoc_req_ies -
	73	(u8 *)&event->frame_control;
	74	sinfo.assoc_req_ies_len =
	75	le16_to_cpu(event->len) - (u16)len;
	76	}
	77	}
	78	cfg80211_new_sta(priv->netdev, event->sta_addr, &sinfo,
	79	GFP_KERNEL);
017a92a1 AP	80
	81	node = mwifiex_add_sta_entry(priv, event->sta_addr);
	82	if (!node) {
	83	dev_warn(adapter->dev,
	84	"could not create station entry!\n");
	85	return -1;
	86	}
	87
	88	if (!priv->ap_11n_enabled)
	89	break;
	90
	91	mwifiex_set_sta_ht_cap(priv, sinfo.assoc_req_ies,
	92	sinfo.assoc_req_ies_len, node);
	93
	94	for (i = 0; i < MAX_NUM_TID; i++) {
	95	if (node->is_11n_enabled)
	96	node->ampdu_sta[i] =
	97	priv->aggr_prio_tbl[i].ampdu_user;
	98	else
	99	node->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
	100	}
	101	memset(node->rx_seq, 0xff, sizeof(node->rx_seq));
3d99d987 AP	102	break;
3d99d987 AP	103	case EVENT_UAP_STA_DEAUTH:
017a92a1 AP	104	deauth_mac = adapter->event_body +
	105	MWIFIEX_UAP_EVENT_EXTRA_HEADER;
	106	cfg80211_del_sta(priv->netdev, deauth_mac, GFP_KERNEL);
	107
3e238a11 AP	108	if (priv->ap_11n_enabled) {
	109	mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, deauth_mac);
	110	mwifiex_del_tx_ba_stream_tbl_by_ra(priv, deauth_mac);
	111	}
9817fffb	112	mwifiex_wmm_del_peer_ra_list(priv, deauth_mac);
017a92a1	113	mwifiex_del_sta_entry(priv, deauth_mac);
3d99d987 AP	114	break;
	115	case EVENT_UAP_BSS_IDLE:
	116	priv->media_connected = false;
47411a06 AP	117	if (netif_carrier_ok(priv->netdev))
	118	netif_carrier_off(priv->netdev);
	119	mwifiex_stop_net_dev_queue(priv->netdev, adapter);
	120
3e238a11	121	mwifiex_clean_txrx(priv);
017a92a1	122	mwifiex_del_all_sta_list(priv);
3d99d987 AP	123	break;
	124	case EVENT_UAP_BSS_ACTIVE:
	125	priv->media_connected = true;
47411a06 AP	126	if (!netif_carrier_ok(priv->netdev))
	127	netif_carrier_on(priv->netdev);
	128	mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
3d99d987 AP	129	break;
	130	case EVENT_UAP_BSS_START:
	131	dev_dbg(adapter->dev, "AP EVENT: event id: %#x\n", eventcause);
	132	memcpy(priv->netdev->dev_addr, adapter->event_body + 2,
	133	ETH_ALEN);
cbf6e055 XH	134	if (priv->hist_data)
cbf6e055 XH	135	mwifiex_hist_data_reset(priv);
3d99d987 AP	136	break;
	137	case EVENT_UAP_MIC_COUNTERMEASURES:
	138	/* For future development */
	139	dev_dbg(adapter->dev, "AP EVENT: event id: %#x\n", eventcause);
	140	break;
d1cf3b95	141	case EVENT_AMSDU_AGGR_CTRL:
8dd4372e BZ	142	ctrl = le16_to_cpu((__le16 )adapter->event_body);
8dd4372e BZ	143	dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n", ctrl);
d1cf3b95 AP	144
	145	if (priv->media_connected) {
	146	adapter->tx_buf_size =
8dd4372e	147	min_t(u16, adapter->curr_tx_buf_size, ctrl);
d1cf3b95 AP	148	dev_dbg(adapter->dev, "event: tx_buf_size %d\n",
	149	adapter->tx_buf_size);
	150	}
	151	break;
5a009adf AP	152	case EVENT_ADDBA:
	153	dev_dbg(adapter->dev, "event: ADDBA Request\n");
	154	if (priv->media_connected)
fa0ecbb9 BZ	155	mwifiex_send_cmd(priv, HostCmd_CMD_11N_ADDBA_RSP,
	156	HostCmd_ACT_GEN_SET, 0,
	157	adapter->event_body, false);
5a009adf AP	158	break;
	159	case EVENT_DELBA:
	160	dev_dbg(adapter->dev, "event: DELBA Request\n");
	161	if (priv->media_connected)
	162	mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
	163	break;
	164	case EVENT_BA_STREAM_TIEMOUT:
	165	dev_dbg(adapter->dev, "event: BA Stream timeout\n");
	166	if (priv->media_connected) {
	167	ba_timeout = (void *)adapter->event_body;
	168	mwifiex_11n_ba_stream_timeout(priv, ba_timeout);
	169	}
	170	break;
cc5c1afb AP	171	case EVENT_EXT_SCAN_REPORT:
	172	dev_dbg(adapter->dev, "event: EXT_SCAN Report\n");
	173	if (adapter->ext_scan)
	174	return mwifiex_handle_event_ext_scan_report(priv,
	175	adapter->event_skb->data);
	176	break;
808bbebc AK	177	case EVENT_TX_STATUS_REPORT:
	178	dev_dbg(adapter->dev, "event: TX_STATUS Report\n");
	179	mwifiex_parse_tx_status_event(priv, adapter->event_body);
76c504ca AP	180	break;
	181	case EVENT_PS_SLEEP:
	182	dev_dbg(adapter->dev, "info: EVENT: SLEEP\n");
	183
	184	adapter->ps_state = PS_STATE_PRE_SLEEP;
	185
	186	mwifiex_check_ps_cond(adapter);
	187	break;
	188
	189	case EVENT_PS_AWAKE:
	190	dev_dbg(adapter->dev, "info: EVENT: AWAKE\n");
	191	if (!adapter->pps_uapsd_mode &&
	192	priv->media_connected && adapter->sleep_period.period) {
	193	adapter->pps_uapsd_mode = true;
	194	dev_dbg(adapter->dev,
	195	"event: PPS/UAPSD mode activated\n");
	196	}
	197	adapter->tx_lock_flag = false;
	198	if (adapter->pps_uapsd_mode && adapter->gen_null_pkt) {
	199	if (mwifiex_check_last_packet_indication(priv)) {
	200	if (adapter->data_sent) {
	201	adapter->ps_state = PS_STATE_AWAKE;
	202	adapter->pm_wakeup_card_req = false;
	203	adapter->pm_wakeup_fw_try = false;
	204	break;
	205	}
	206	if (!mwifiex_send_null_packet
	207	(priv,
	208	MWIFIEX_TxPD_POWER_MGMT_NULL_PACKET \|
	209	MWIFIEX_TxPD_POWER_MGMT_LAST_PACKET))
	210	adapter->ps_state =
	211	PS_STATE_SLEEP;
	212	return 0;
	213	}
	214	}
	215	adapter->ps_state = PS_STATE_AWAKE;
	216	adapter->pm_wakeup_card_req = false;
	217	adapter->pm_wakeup_fw_try = false;
0a694d68	218	break;
76c504ca	219
0a694d68 AP	220	case EVENT_CHANNEL_REPORT_RDY:
	221	dev_dbg(adapter->dev, "event: Channel Report\n");
	222	mwifiex_11h_handle_chanrpt_ready(priv, adapter->event_skb);
808bbebc	223	break;
3d99d987 AP	224	default:
	225	dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
	226	eventcause);
	227	break;
	228	}
	229
	230	return 0;
	231	}
0f9e9b8b AP	232
	233	/* This function deletes station entry from associated station list.
	234	* Also if both AP and STA are 11n enabled, RxReorder tables and TxBA stream
	235	* tables created for this station are deleted.
	236	*/
	237	void mwifiex_uap_del_sta_data(struct mwifiex_private *priv,
	238	struct mwifiex_sta_node *node)
	239	{
	240	if (priv->ap_11n_enabled && node->is_11n_enabled) {
	241	mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, node->mac_addr);
	242	mwifiex_del_tx_ba_stream_tbl_by_ra(priv, node->mac_addr);
	243	}
	244	mwifiex_del_sta_entry(priv, node->mac_addr);
	245
	246	return;
	247	}