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

/*
 * Marvell Wireless LAN device driver: AP event handling
 *
 * Copyright (C) 2012, 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.filled = STATION_INFO_ASSOC_REQ_IES;
				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_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);
		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_async(priv, HostCmd_CMD_11N_ADDBA_RSP,
					       HostCmd_ACT_GEN_SET, 0,
					       adapter->event_body);
		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;
	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	*
	4	* Copyright (C) 2012, Marvell International Ltd.
	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) {
	71	sinfo.filled = STATION_INFO_ASSOC_REQ_IES;
	72	sinfo.assoc_req_ies = &event->data[len];
	73	len = (u8 *)sinfo.assoc_req_ies -
	74	(u8 *)&event->frame_control;
	75	sinfo.assoc_req_ies_len =
	76	le16_to_cpu(event->len) - (u16)len;
	77	}
	78	}
	79	cfg80211_new_sta(priv->netdev, event->sta_addr, &sinfo,
	80	GFP_KERNEL);
017a92a1 AP	81
	82	node = mwifiex_add_sta_entry(priv, event->sta_addr);
	83	if (!node) {
	84	dev_warn(adapter->dev,
	85	"could not create station entry!\n");
	86	return -1;
	87	}
	88
	89	if (!priv->ap_11n_enabled)
	90	break;
	91
	92	mwifiex_set_sta_ht_cap(priv, sinfo.assoc_req_ies,
	93	sinfo.assoc_req_ies_len, node);
	94
	95	for (i = 0; i < MAX_NUM_TID; i++) {
	96	if (node->is_11n_enabled)
	97	node->ampdu_sta[i] =
	98	priv->aggr_prio_tbl[i].ampdu_user;
	99	else
	100	node->ampdu_sta[i] = BA_STREAM_NOT_ALLOWED;
	101	}
	102	memset(node->rx_seq, 0xff, sizeof(node->rx_seq));
3d99d987 AP	103	break;
3d99d987 AP	104	case EVENT_UAP_STA_DEAUTH:
017a92a1 AP	105	deauth_mac = adapter->event_body +
	106	MWIFIEX_UAP_EVENT_EXTRA_HEADER;
	107	cfg80211_del_sta(priv->netdev, deauth_mac, GFP_KERNEL);
	108
3e238a11 AP	109	if (priv->ap_11n_enabled) {
	110	mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, deauth_mac);
	111	mwifiex_del_tx_ba_stream_tbl_by_ra(priv, deauth_mac);
	112	}
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);
	134	break;
	135	case EVENT_UAP_MIC_COUNTERMEASURES:
	136	/* For future development */
	137	dev_dbg(adapter->dev, "AP EVENT: event id: %#x\n", eventcause);
	138	break;
d1cf3b95	139	case EVENT_AMSDU_AGGR_CTRL:
8dd4372e BZ	140	ctrl = le16_to_cpu((__le16 )adapter->event_body);
8dd4372e BZ	141	dev_dbg(adapter->dev, "event: AMSDU_AGGR_CTRL %d\n", ctrl);
d1cf3b95 AP	142
	143	if (priv->media_connected) {
	144	adapter->tx_buf_size =
8dd4372e	145	min_t(u16, adapter->curr_tx_buf_size, ctrl);
d1cf3b95 AP	146	dev_dbg(adapter->dev, "event: tx_buf_size %d\n",
	147	adapter->tx_buf_size);
	148	}
	149	break;
5a009adf AP	150	case EVENT_ADDBA:
	151	dev_dbg(adapter->dev, "event: ADDBA Request\n");
	152	if (priv->media_connected)
	153	mwifiex_send_cmd_async(priv, HostCmd_CMD_11N_ADDBA_RSP,
	154	HostCmd_ACT_GEN_SET, 0,
	155	adapter->event_body);
	156	break;
	157	case EVENT_DELBA:
	158	dev_dbg(adapter->dev, "event: DELBA Request\n");
	159	if (priv->media_connected)
	160	mwifiex_11n_delete_ba_stream(priv, adapter->event_body);
	161	break;
	162	case EVENT_BA_STREAM_TIEMOUT:
	163	dev_dbg(adapter->dev, "event: BA Stream timeout\n");
	164	if (priv->media_connected) {
	165	ba_timeout = (void *)adapter->event_body;
	166	mwifiex_11n_ba_stream_timeout(priv, ba_timeout);
	167	}
	168	break;
3d99d987 AP	169	default:
	170	dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
	171	eventcause);
	172	break;
	173	}
	174
	175	return 0;
	176	}
0f9e9b8b AP	177
	178	/* This function deletes station entry from associated station list.
	179	* Also if both AP and STA are 11n enabled, RxReorder tables and TxBA stream
	180	* tables created for this station are deleted.
	181	*/
	182	void mwifiex_uap_del_sta_data(struct mwifiex_private *priv,
	183	struct mwifiex_sta_node *node)
	184	{
	185	if (priv->ap_11n_enabled && node->is_11n_enabled) {
	186	mwifiex_11n_del_rx_reorder_tbl_by_ta(priv, node->mac_addr);
	187	mwifiex_del_tx_ba_stream_tbl_by_ra(priv, node->mac_addr);
	188	}
	189	mwifiex_del_sta_entry(priv, node->mac_addr);
	190
	191	return;
	192	}