linux-vybrid_public/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"

/*
 * 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;
	u32 eventcause = adapter->event_cause;
	struct station_info sinfo;
	struct mwifiex_assoc_event *event;

	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);
		break;
	case EVENT_UAP_STA_DEAUTH:
		cfg80211_del_sta(priv->netdev, adapter->event_body +
				 MWIFIEX_UAP_EVENT_EXTRA_HEADER, GFP_KERNEL);
		break;
	case EVENT_UAP_BSS_IDLE:
		priv->media_connected = false;
		break;
	case EVENT_UAP_BSS_ACTIVE:
		priv->media_connected = true;
		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;
	default:
		dev_dbg(adapter->dev, "event: unknown event id: %#x\n",
			eventcause);
		break;
	}

	return 0;
}