lib/lockref: __lockref_is_dead can be boolean

Make __lockref_is_dead return bool due to this function only using either
true or false as its return value.

No functional change.

Link: http://lkml.kernel.org/r/1513266622-15860-3-git-send-email-baiyaowei@cmss.chinamobile.com
Signed-off-by: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

0 files changed, 0 insertions, 0 deletions

path: root/tools/perf

/*
 *  PS3 gelic network driver.
 *
 * Copyright (C) 2007 Sony Computer Entertainment Inc.
 * Copyright 2007 Sony Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
#undef DEBUG

#include <linux/kernel.h>
#include <linux/module.h>

#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/if_vlan.h>

#include <linux/in.h>
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/wireless.h>
#include <linux/ieee80211.h>
#include <linux/if_arp.h>
#include <linux/ctype.h>
#include <linux/string.h>
#include <net/iw_handler.h>

#include <linux/dma-mapping.h>
#include <net/checksum.h>
#include <asm/firmware.h>
#include <asm/ps3.h>
#include <asm/lv1call.h>

#include "ps3_gelic_net.h"
#include "ps3_gelic_wireless.h"


static int gelic_wl_start_scan(struct gelic_wl_info *wl, int always_scan,
			       u8 *essid, size_t essid_len);
static int gelic_wl_try_associate(struct net_device *netdev);

/*
 * tables
 */

/* 802.11b/g channel to freq in MHz */
static const int channel_freq[] = {
	2412, 2417, 2422, 2427, 2432,
	2437, 2442, 2447, 2452, 2457,
	2462, 2467, 2472, 2484
};
#define NUM_CHANNELS ARRAY_SIZE(channel_freq)

/* in bps */
static const int bitrate_list[] = {
	  1000000,
	  2000000,
	  5500000,
	 11000000,
	  6000000,
	  9000000,
	 12000000,
	 18000000,
	 24000000,
	 36000000,
	 48000000,
	 54000000
};
#define NUM_BITRATES ARRAY_SIZE(bitrate_list)

/*
 * wpa2 support requires the hypervisor version 2.0 or later
 */
static inline int wpa2_capable(void)
{
	return (0 <= ps3_compare_firmware_version(2, 0, 0));
}

static inline int precise_ie(void)
{
	return (0 <= ps3_compare_firmware_version(2, 2, 0));
}
/*
 * post_eurus_cmd helpers
 */
struct eurus_cmd_arg_info {
	int pre_arg; /* command requres arg1, arg2 at POST COMMAND */
	int post_arg; /* command requires arg1, arg2 at GET_RESULT */
};

static const struct eurus_cmd_arg_info cmd_info[GELIC_EURUS_CMD_MAX_INDEX] = {
	[GELIC_EURUS_CMD_SET_COMMON_CFG] = { .pre_arg = 1},
	[GELIC_EURUS_CMD_SET_WEP_CFG]    = { .pre_arg = 1},
	[GELIC_EURUS_CMD_SET_WPA_CFG]    = { .pre_arg = 1},
	[GELIC_EURUS_CMD_GET_COMMON_CFG] = { .post_arg = 1},
	[GELIC_EURUS_CMD_GET_WEP_CFG]    = { .post_arg = 1},
	[GELIC_EURUS_CMD_GET_WPA_CFG]    = { .post_arg = 1},
	[GELIC_EURUS_CMD_GET_RSSI_CFG]   = { .post_arg = 1},
	[GELIC_EURUS_CMD_START_SCAN]     = { .pre_arg = 1},
	[GELIC_EURUS_CMD_GET_SCAN]       = { .post_arg = 1},
};

#ifdef DEBUG
static const char *cmdstr(enum gelic_eurus_command ix)
{
	switch (ix) {
	case GELIC_EURUS_CMD_ASSOC:
		return "ASSOC";
	case GELIC_EURUS_CMD_DISASSOC:
		return "DISASSOC";
	case GELIC_EURUS_CMD_START_SCAN:
		return "SCAN";
	case GELIC_EURUS_CMD_GET_SCAN:
		return "GET SCAN";
	case GELIC_EURUS_CMD_SET_COMMON_CFG:
		return "SET_COMMON_CFG";
	case GELIC_EURUS_CMD_GET_COMMON_CFG:
		return "GET_COMMON_CFG";
	case GELIC_EURUS_CMD_SET_WEP_CFG:
		return "SET_WEP_CFG";
	case GELIC_EURUS_CMD_GET_WEP_CFG:
		return "GET_WEP_CFG";
	case GELIC_EURUS_CMD_SET_WPA_CFG:
		return "SET_WPA_CFG";
	case GELIC_EURUS_CMD_GET_WPA_CFG:
		return "GET_WPA_CFG";
	case GELIC_EURUS_CMD_GET_RSSI_CFG:
		return "GET_RSSI";
	default:
		break;
	}
	return "";
};
#else
static inline const char *cmdstr(enum gelic_eurus_command ix)
{
	return "";
}
#endif

/* synchronously do eurus commands */
static void gelic_eurus_sync_cmd_worker(struct work_struct *work)
{
	struct gelic_eurus_cmd *cmd;
	struct gelic_card *card;
	struct gelic_wl_info *wl;

	u64 arg1, arg2;

	pr_debug("%s: <-\n", __func__);
	cmd = container_of(work, struct gelic_eurus_cmd, work);
	BUG_ON(cmd_info[cmd->cmd].pre_arg &&
	       cmd_info[cmd->cmd].post_arg);
	wl = cmd->wl;
	card = port_to_card(wl_port(wl));

	if (cmd_info[cmd->cmd].pre_arg) {
		arg1 = (cmd->buffer) ?
			ps3_mm_phys_to_lpar(__pa(cmd->buffer)) :
			0;
		arg2 = cmd->buf_size;
	} else {
		arg1 = 0;
		arg2 = 0;
	}
	init_completion(&wl->cmd_done_intr);
	pr_debug("%s: cmd='%s' start\n", __func__, cmdstr(cmd->cmd));
	cmd->status = lv1_net_control(bus_id(card), dev_id(card),
				      GELIC_LV1_POST_WLAN_CMD,
				      cmd->cmd, arg1, arg2,
				      &cmd->tag, &cmd->size);
	if (cmd->status) {
		complete(&cmd->done);
		pr_info("%s: cmd issue failed\n", __func__);
		return;
	}

	wait_for_completion(&wl->cmd_done_intr);

	if (cmd_info[cmd->cmd].post_arg) {
		arg1 = ps3_mm_phys_to_lpar(__pa(cmd->buffer));
		arg2 = cmd->buf_size;
	} else {
		arg1 = 0;
		arg2 = 0;
	}

	cmd->status = lv1_net_control(bus_id(card), dev_id(card),
				      GELIC_LV1_GET_WLAN_CMD_RESULT,
				      cmd->tag, arg1, arg2,
				      &cmd->cmd_status, &cmd->size);
#ifdef DEBUG
	if (cmd->status || cmd->cmd_status) {
	pr_debug("%s: cmd done tag=%#lx arg1=%#lx, arg2=%#lx\n", __func__,
		 cmd->tag, arg1, arg2);
	pr_debug("%s: cmd done status=%#x cmd_status=%#lx size=%#lx\n",
		 __func__, cmd->status, cmd->cmd_status, cmd->size);
	}
#endif
	complete(&cmd->done);
	pr_debug("%s: cmd='%s' done\n", __func__, cmdstr(cmd->cmd));
}

static struct gelic_eurus_cmd *gelic_eurus_sync_cmd(struct gelic_wl_info *wl,
						    unsigned int eurus_cmd,
						    void *buffer,
						    unsigned int buf_size)
{
	struct gelic_eurus_cmd *cmd;

	/* allocate cmd */
	cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
	if (!cmd)
		return NULL;

	/* initialize members */
	cmd->cmd = eurus_cmd;
	cmd->buffer = buffer;
	cmd->buf_size = buf_size;
	cmd->wl = wl;
	INIT_WORK(&cmd->work, gelic_eurus_sync_cmd_worker);
	init_completion(&cmd->done);
	queue_work(wl->eurus_cmd_queue, &cmd->work);

	/* wait for command completion */
	wait_for_completion(&cmd->done);

	return cmd;
}

static u32 gelic_wl_get_link(struct net_device *netdev)
{
	struct gelic_wl_info *wl = port_wl(netdev_port(netdev));
	u32 ret;

	pr_debug("%s: <-\n", __func__);
	mutex_lock(&wl->assoc_stat_lock);
	if (wl->assoc_stat == GELIC_WL_ASSOC_STAT_ASSOCIATED)
		ret = 1;
	else
		ret = 0;
	mutex_unlock(&wl->assoc_stat_lock);
	pr_debug("%s: ->\n", __func__);
	return ret;
}

static void gelic_wl_send_iwap_event(struct gelic_wl_info *wl, u8 *bssid)
{
	union iwreq_data data;

	memset(&data, 0, sizeof(data));
	if (bssid)
		memcpy(data.ap_addr.sa_data, bssid, ETH_ALEN);
	data.ap_addr.sa_family = ARPHRD_ETHER;
	wireless_send_event(port_to_netdev(wl_port(wl)), SIOCGIWAP,
			    &data, NULL);
}

/*
 * wireless extension handlers and helpers
 */

/* SIOGIWNAME */
static int gelic_wl_get_name(struct net_device *dev,
			     struct iw_request_info *info,
			     union iwreq_data *iwreq, char *extra)
{
	strcpy(iwreq->name, "IEEE 802.11bg");
	return 0;
}

static void gelic_wl_get_ch_info(struct gelic_wl_info *wl)
{
	struct gelic_card *card = port_to_card(wl_port(wl));
	u64 ch_info_raw, tmp;
	int status;

	if (!test_and_set_bit(GELIC_WL_STAT_CH_INFO, &wl->stat)) {
		status = lv1_net_control(bus_id(card), dev_id(card),
					 GELIC_LV1_GET_CHANNEL, 0, 0, 0,
					 &ch_info_raw,
					 &tmp);
		/* some fw versions may return error */
		if (status) {
			if (status != LV1_NO_ENTRY)
				pr_info("%s: available ch unknown\n", __func__);
			wl->ch_info = 0x07ff;/* 11 ch */
		} else
			/* 16 bits of MSB has available channels */
			wl->ch_info = ch_info_raw >> 48;
	}
	return;
}

/* SIOGIWRANGE */
static int gelic_wl_get_range(struct net_device *netdev,
			      struct iw_request_info *info,
			      union iwreq_data *iwreq, char *extra)
{
	struct iw_point *point = &iwreq->data;
	struct iw_range *range = (struct iw_range *)extra;
	struct gelic_wl_info *wl = port_wl(netdev_port(netdev));
	unsigned int i, chs;

	pr_debug("%s: <-\n", __func__);
	point->length = sizeof(struct iw_range);
	memset(range, 0, sizeof(struct iw_range));

	range->we_version_compiled = WIRELESS_EXT;
	range->we_version_source = 22;

	/* available channels and frequencies */
	gelic_wl_get_ch_info(wl);

	for (i = 0, chs = 0;
	     i < NUM_CHANNELS && chs < IW_MAX_FREQUENCIES; i++)
		if (wl->ch_info & (1 << i)) {
			range->freq[chs].i = i + 1;
			range->freq[chs].m = channel_freq[i];
			range->freq[chs].e = 6;
			chs++;
		}
	range->num_frequency = chs;
	range->old_num_frequency = chs;
	range->num_channels = chs;
	range->old_num_channels = chs;

	/* bitrates */
	for (i = 0; i < NUM_BITRATES; i++)
		range->bitrate[i] = bitrate_list[i];
	range->num_bitrates = i;

	/* signal levels */
	range->max_qual.qual = 100; /* relative value */
	range->max_qual.level = 100;
	range->avg_qual.qual = 50;
	range->avg_qual.level = 50;
	range->sensitivity = 0;

	/* Event capability */
	IW_EVENT_CAPA_SET_KERNEL(range->event_capa);
	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWAP);
	IW_EVENT_CAPA_SET(range->event_capa, SIOCGIWSCAN);

	/* encryption capability */
	range->enc_capa = IW_ENC_CAPA_WPA |
		IW_ENC_CAPA_CIPHER_TKIP | IW_ENC_CAPA_CIPHER_CCMP |
		IW_ENC_CAPA_4WAY_HANDSHAKE;
	if (wpa2_capable())
		range->enc_capa |= IW_ENC_CAPA_WPA2;
	range->encoding_size[0] = 5;	/* 40bit WEP */
	range->encoding_size[1] = 13;	/* 104bit WEP */
	range->encoding_size[2] = 32;	/* WPA-PSK */
	range->num_encoding_sizes = 3;
	range->max_encoding_tokens = GELIC_WEP_KEYS;

	/* scan capability */
	range->scan_capa = IW_SCAN_CAPA_ESSID;

	pr_debug("%s: ->\n", __func__);
	return 0;

}

/* SIOC{G,S}IWSCAN */
static int gelic_wl_set_scan(struct net_device *netdev,
			   struct iw_request_info *info,
			   union iwreq_data *wrqu, char *extra)
{
	struct gelic_wl_info *wl = port_wl(netdev_priv(netdev));
	struct iw_scan_req *req;
	u8 *essid = NULL;
	size_t essid_len = 0;

	if (wrqu->data.length == sizeof(struct iw_scan_req) &&
	    wrqu->data.flags & IW_SCAN_THIS_ESSID) {
		req = (struct iw_scan_req*)extra;
		essid = req->essid;
		essid_len = req->essid_len;
		pr_debug("%s: ESSID scan =%s\n", __func__, essid);
	}
	return gelic_wl_start_scan(wl, 1, essid, essid_len);
}

#define OUI_LEN 3
static const u8 rsn_oui[OUI_LEN] = { 0x00, 0x0f, 0xac };
static const u8 wpa_oui[OUI_LEN] = { 0x00, 0x50, 0xf2 };

/*
 * synthesize WPA/RSN IE data
 * See WiFi WPA specification and IEEE 802.11-2007 7.3.2.25
 * for the format
 */
static size_t gelic_wl_synthesize_ie(u8 *buf,
				     struct gelic_eurus_scan_info *scan)
{

	const u8 *oui_header;
	u8 *start = buf;
	int rsn;
	int ccmp;

	pr_debug("%s: <- sec=%16x\n", __func__, scan->security);
	switch (be16_to_cpu(scan->security) & GELIC_EURUS_SCAN_SEC_MASK) {
	case GELIC_EURUS_SCAN_SEC_WPA:
		rsn = 0;
		break;
	case GELIC_EURUS_SCAN_SEC_WPA2:
		rsn = 1;
		break;
	default:
		/* WEP or none.  No IE returned */
		return 0;
	}

	switch (be16_to_cpu(scan->security) & GELIC_EURUS_SCAN_SEC_WPA_MASK) {
	case GELIC_EURUS_SCAN_SEC_WPA_TKIP:
		ccmp = 0;
		break;
	case GELIC_EURUS_SCAN_SEC_WPA_AES:
		ccmp = 1;
		break;
	default:
		if (rsn) {
			ccmp = 1;
			pr_info("%s: no cipher info. defaulted to CCMP\n",
				__func__);
		} else {
			ccmp = 0;
			pr_info("%s: no cipher info. defaulted to TKIP\n",
				__func__);
		}
	}

	if (rsn)
		oui_header = rsn_oui;
	else
		oui_header = wpa_oui;

	/* element id */
	if (rsn)
		*buf++ = WLAN_EID_RSN;
	else
		*buf++ = WLAN_EID_GENERIC;

	/* length filed; set later */
	buf++;

	/* wpa special header */
	if (!rsn) {
		memcpy(buf, wpa_oui, OUI_LEN);
		buf += OUI_LEN;
		*buf++ = 0x01;
	}

	/* version */
	*buf++ = 0x01; /* version 1.0 */
	*buf++ = 0x00;

	/* group cipher */
	memcpy(buf, oui_header, OUI_LEN);
	buf += OUI_LEN;

	if (ccmp)
		*buf++ = 0x04; /* CCMP */
	else
		*buf++ = 0x02; /* TKIP */

	/* pairwise key count always 1 */
	*buf++ = 0x01;
	*buf++ = 0x00;

	/* pairwise key suit */
	memcpy(buf, oui_header, OUI_LEN);
	buf += OUI_LEN;
	if (ccmp)
		*buf++ = 0x04; /* CCMP */
	else
		*buf++ = 0x02; /* TKIP */

	/* AKM count is 1 */
	*buf++ = 0x01;
	*buf++ = 0x00;

	/* AKM suite is assumed as PSK*/
	memcpy(buf, oui_header, OUI_LEN);
	buf += OUI_LEN;
	*buf++ = 0x02; /* PSK */

	/* RSN capabilities is 0 */
	*buf++ = 0x00;
	*buf++ = 0x00;

	/* set length field */
	start[1] = (buf - start - 2);

	pr_debug("%s: ->\n", __func__);
	return (buf - start);
}

struct ie_item {
	u8 *data;
	u8 len;
};

struct ie_info {
	struct ie_item wpa;
	struct ie_item rsn;
};

static void gelic_wl_parse_ie(u8 *data, size_t len,
			      struct ie_info *ie_info)
{
	size_t data_left = len;
	u8 *pos = data;
	u8 item_len;
	u8 item_id;

	pr_debug("%s: data=%p len=%ld \n", __func__,
		 data, len);
	memset(ie_info, 0, sizeof(struct ie_info));

	while (2 <= data_left) {
		item_id = *pos++;
		item_len = *pos++;
		data_left -= 2;

		if (data_left < item_len)
			break;

		switch (item_id) {
		case WLAN_EID_GENERIC:
			if ((OUI_LEN + 1 <= item_len) &&
			    !memcmp(pos, wpa_oui, OUI_LEN) &&
			    pos[OUI_LEN] == 0x01) {
				ie_info->wpa.data = pos - 2;
				ie_info->wpa.len = item_len + 2;
			}
			break;
		case WLAN_EID_RSN:
			ie_info->rsn.data = pos - 2;
			/* length includes the header */
			ie_info->rsn.len = item_len + 2;
			break;
		default:
			pr_debug("%s: ignore %#x,%d\n", __func__,
				 item_id, item_len);
			break;
		}
		pos += item_len;
		data_left -= item_len;
	}
	pr_debug("%s: wpa=%p,%d wpa2=%p,%d\n", __func__,
		 ie_info->wpa.data, ie_info->wpa.len,
		 ie_info->rsn.data, ie_info->rsn.len);
}


/*
 * translate the scan informations from hypervisor to a
 * independent format
 */
static char *gelic_wl_translate_scan(struct net_device *netdev,
				     struct iw_request_info *info,
				     char *ev,
				     char *stop,
				     struct gelic_wl_scan_info *network)
{
	struct iw_event iwe;
	struct gelic_eurus_scan_info *scan = network->hwinfo;
	char *tmp;
	u8 rate;
	unsigned int i, j, len;
	u8 buf[64]; /* arbitrary size large enough */

	pr_debug("%s: <-\n", __func__);

	/* first entry should be AP's mac address */
	iwe.cmd = SIOCGIWAP;
	iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
	memcpy(iwe.u.ap_addr.sa_data, &scan->bssid[2], ETH_ALEN);
	ev = iwe_stream_add_event(info, ev, stop, &iwe, IW_EV_ADDR_LEN);

	/* ESSID */
	iwe.cmd = SIOCGIWESSID;
	iwe.u.data.flags = 1;
	iwe.u.data.length = strnlen(scan->essid, 32);
	ev = iwe_stream_add_point(info, ev, stop, &iwe, scan->essid);

	/* FREQUENCY */
	iwe.cmd = SIOCGIWFREQ;
	iwe.u.freq.m = be16_to_cpu(scan->channel);
	iwe.u.freq.e = 0; /* table value in MHz */
	iwe.u.freq.i = 0;
	ev = iwe_stream_add_event(info, ev, stop, &iwe, IW_EV_FREQ_LEN);

	/* RATES */
	iwe.cmd = SIOCGIWRATE;
	iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
	/* to stuff multiple values in one event */
	tmp = ev + iwe_stream_lcp_len(info);
	/* put them in ascendant order (older is first) */
	i = 0;
	j = 0;
	pr_debug("%s: rates=%d rate=%d\n", __func__,
		 network->rate_len, network->rate_ext_len);
	while (i < network->rate_len) {
		if (j < network->rate_ext_len &&
		    ((scan->ext_rate[j] & 0x7f) < (scan->rate[i] & 0x7f)))
		    rate = scan->ext_rate[j++] & 0x7f;
		else
		    rate = scan->rate[i++] & 0x7f;
		iwe.u.bitrate.value = rate * 500000; /* 500kbps unit */
		tmp = iwe_stream_add_value(info, ev, tmp, stop, &iwe,
					   IW_EV_PARAM_LEN);
	}
	while (j < network->rate_ext_len) {
		iwe.u.bitrate.value = (scan->ext_rate[j++] & 0x7f) * 500000;
		tmp = iwe_stream_add_value(info, ev, tmp, stop, &iwe,
					   IW_EV_PARAM_LEN);
	}
	/* Check if we added any rate */
	if (iwe_stream_lcp_len(info) < (tmp - ev))
		ev = tmp;

	/* ENCODE */
	iwe.cmd = SIOCGIWENCODE;
	if (be16_to_cpu(scan->capability) & WLAN_CAPABILITY_PRIVACY)
		iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
	else
		iwe.u.data.flags = IW_ENCODE_DISABLED;
	iwe.u.data.length = 0;
	ev = iwe_stream_add_point(info, ev, stop, &iwe, scan->essid);

	/* MODE */
	iwe.cmd = SIOCGIWMODE;
	if (be16_to_cpu(scan->capability) &
	    (WLAN_CAPABILITY_ESS | WLAN_CAPABILITY_IBSS)) {
		if (be16_to_cpu(scan->capability) & WLAN_CAPABILITY_ESS)
			iwe.u.mode = IW_MODE_MASTER;
		else
			iwe.u.mode = IW_MODE_ADHOC;
		ev = iwe_stream_add_event(info, ev, stop, &iwe, IW_EV_UINT_LEN);
	}

	/* QUAL */
	iwe.cmd = IWEVQUAL;
	iwe.u.qual.updated  = IW_QUAL_ALL_UPDATED |
			IW_QUAL_QUAL_INVALID | IW_QUAL_NOISE_INVALID;
	iwe.u.qual.level = be16_to_cpu(scan->rssi);
	iwe.u.qual.qual = be16_to_cpu(scan->rssi);
	iwe.u.qual.noise = 0;
	ev  = iwe_stream_add_event(info, ev, stop, &iwe, IW_EV_QUAL_LEN);

	/* RSN */
	memset(&iwe, 0, sizeof(iwe));
	if (be16_to_cpu(scan->size) <= sizeof(*scan)) {
		/* If wpa[2] capable station, synthesize IE and put it */
		len = gelic_wl_synthesize_ie(buf, scan);
		if (len) {
			iwe.cmd = IWEVGENIE;
			iwe.u.data.length = len;
			ev = iwe_stream_add_point(info, ev, stop, &iwe, buf);
		}
	} else {
		/* this scan info has IE data */
		struct ie_info ie_info;
		size_t data_len;

		data_len = be16_to_cpu(scan->size) - sizeof(*scan);

		gelic_wl_parse_ie(scan->elements, data_len, &ie_info);

		if (ie_info.wpa.len && (ie_info.wpa.len <= sizeof(buf))) {
			memcpy(buf, ie_info.wpa.data, ie_info.wpa.len);
			iwe.cmd = IWEVGENIE;
			iwe.u.data.length = ie_info.wpa.len;
			ev = iwe_stream_add_point(info, ev, stop, &iwe, buf);
		}

		if (ie_info.rsn.len && (ie_info.rsn.len <= sizeof(buf))) {
			memset(&iwe, 0, sizeof(iwe));
			memcpy(buf, ie_info.rsn.data, ie_info.rsn.len);
			iwe.cmd = IWEVGENIE;
			iwe.u.data.length = ie_info.rsn.len;
			ev = iwe_stream_add_point(info, ev, stop, &iwe, buf);
		}
	}

	pr_debug("%s: ->\n", __func__);
	return ev;
}


static int gelic_wl_get_scan(struct net_device *netdev,
			     struct iw_request_info *info,
			     union iwreq_data *wrqu, char *extra)
{
	struct gelic_wl_info *wl = port_wl(netdev_priv(netdev));
	struct gelic_wl_scan_info *scan_info;
	char *ev = extra;
	char *stop = ev + wrqu->data.length;
	int ret = 0;
	unsigned long this_time = jiffies;

	pr_debug("%s: <-\n", __func__);
	if (mutex_lock_interruptible(&wl->scan_lock))
		return -EAGAIN;

	switch (wl->scan_stat) {
	case GELIC_WL_SCAN_STAT_SCANNING:
		/* If a scan in progress, caller should call me again */
		ret = -EAGAIN;
		goto out;
		break;

	case GELIC_WL_SCAN_STAT_INIT:
		/* last scan request failed or never issued */
		ret = -ENODEV;
		goto out;
		break;
	case GELIC_WL_SCAN_STAT_GOT_LIST:
		/* ok, use current list */
		break;
	}

	list_for_each_entry(scan_info, &wl->network_list, list) {
		if (wl->scan_age == 0 ||
		    time_after(scan_info->last_scanned + wl->scan_age,
			       this_time))
			ev = gelic_wl_translate_scan(netdev, info,
						     ev, stop,
						     scan_info);
		else
			pr_debug("%s:entry too old\n", __func__);

		if (stop - ev <= IW_EV_ADDR_LEN) {
			ret = -E2BIG;
			goto out;
		}
	}

	wrqu->data.length = ev - extra;
	wrqu->data.flags = 0;
out:
	mutex_unlock(&wl->scan_lock);
	pr_debug("%s: -> %d %d\n", __func__, ret, wrqu->data.length);
	return ret;
}

#ifdef DEBUG
static void scan_list_dump(struct gelic_wl_info *wl)
{
	struct gelic_wl_scan_info *scan_info;
	int i;

	i = 0;
	list_for_each_entry(scan_info, &wl->network_list, list) {
		pr_debug("%s: item %d\n", __func__, i++);
		pr_debug("valid=%d eurusindex=%d last=%lx\n",
			 scan_info->valid, scan_info->eurus_index,
			 scan_info->last_scanned);
		pr_debug("r_len=%d r_ext_len=%d essid_len=%d\n",
			 scan_info->rate_len, scan_info->rate_ext_len,
			 scan_info->essid_len);
		/* -- */
		pr_debug("bssid=%pM\n", &scan_info->hwinfo->bssid[2]);
		pr_debug("essid=%s\n", scan_info->hwinfo->essid);
	}
}
#endif

static int gelic_wl_set_auth(struct net_device *netdev,
			     struct iw_request_info *info,
			     union iwreq_data *data, char *extra)
{
	struct iw_param *param = &data->param;
	struct gelic_wl_info *wl = port_wl(netdev_port(netdev));
	unsigned long irqflag;
	int ret = 0;

	pr_debug("%s: <- %d\n", __func__, param->flags & IW_AUTH_INDEX);
	spin_lock_irqsave(&wl->lock, irqflag);
	switch (param->flags & IW_AUTH_INDEX) {
	case IW_AUTH_WPA_VERSION:
		if (param->value & IW_AUTH_WPA_VERSION_DISABLED) {
			pr_debug("%s: NO WPA selected\n", __func__);
			wl->wpa_level = GELIC_WL_WPA_LEVEL_NONE;
			wl->group_cipher_method = GELIC_WL_CIPHER_WEP;
			wl->pairwise_cipher_method = GELIC_WL_CIPHER_WEP;
		}
		if (param->value & IW_AUTH_WPA_VERSION_WPA) {
			pr_debug("%s: WPA version 1 selected\n", __func__);
			wl->wpa_level = GELIC_WL_WPA_LEVEL_WPA;
			wl->group_cipher_method = GELIC_WL_CIPHER_TKIP;
			wl->pairwise_cipher_method = GELIC_WL_CIPHER_TKIP;
			wl->auth_method = GELIC_EURUS_AUTH_OPEN;
		}
		if (param->value & IW_AUTH_WPA_VERSION_WPA2) {
			/*
			 * As the hypervisor may not tell the cipher
			 * information of the AP if it is WPA2,
			 * you will not decide suitable cipher from
			 * its beacon.
			 * You should have knowledge about the AP's
			 * cipher infomation in other method prior to
			 * the association.
			 */
			if (!precise_ie())
				pr_info("%s: WPA2 may not work\n", __func__);
			if (wpa2_capable()) {
				wl->wpa_level = GELIC_WL_WPA_LEVEL_WPA2;
				wl->group_cipher_method = GELIC_WL_CIPHER_AES;
				wl->pairwise_cipher_method =
					GELIC_WL_CIPHER_AES;
				wl->auth_method = GELIC_EURUS_AUTH_OPEN;
			} else
				ret = -EINVAL;
		}
		break;

	case IW_AUTH_CIPHER_PAIRWISE:
		if (param->value &
		    (IW_AUTH_CIPHER_WEP104 | IW_AUTH_CIPHER_WEP40)) {
			pr_debug("%s: WEP selected\n", __func__);
			wl->pairwise_cipher_method = GELIC_WL_CIPHER_WEP;
		}
		if (param->value & IW_AUTH_CIPHER_TKIP) {
			pr_debug("%s: TKIP selected\n", __func__);
			wl->pairwise_cipher_method = GELIC_WL_CIPHER_TKIP;
		}
		if (param->value & IW_AUTH_CIPHER_CCMP) {
			pr_debug("%s: CCMP selected\n", __func__);
			wl->pairwise_cipher_method = GELIC_WL_CIPHER_AES;
		}
		if (param->value & IW_AUTH_CIPHER_NONE) {
			pr_debug("%s: no auth selected\n", __func__);
			wl->pairwise_cipher_method = GELIC_WL_CIPHER_NONE;
		}
		break;
	case IW_AUTH_CIPHER_GROUP:
		if (param->value &
		    (IW_AUTH_CIPHER_WEP104 | IW_AUTH_CIPHER_WEP40)) {
			pr_debug("%s: WEP selected\n", __func__);
			wl->group_cipher_method = GELIC_WL_CIPHER_WEP;
		}
		if (param->value & IW_AUTH_CIPHER_TKIP) {
			pr_debug("%s: TKIP selected\n", __func__);
			wl->group_cipher_method = GELIC_WL_CIPHER_TKIP;
		}
		if (param->value & IW_AUTH_CIPHER_CCMP) {
			pr_debug("%s: CCMP selected\n", __func__);
			wl->group_cipher_method = GELIC_WL_CIPHER_AES;
		}
		if (param->value & IW_AUTH_CIPHER_NONE) {
			pr_debug("%s: no auth selected\n", __func__);
			wl->group_cipher_method = GELIC_WL_CIPHER_NONE;
		}
		break;
	case IW_AUTH_80211_AUTH_ALG:
		if (param->value & IW_AUTH_ALG_SHARED_KEY) {
			pr_debug("%s: shared key specified\n", __func__);
			wl->auth_method = GELIC_EURUS_AUTH_SHARED;
		} else if (param->value & IW_AUTH_ALG_OPEN_SYSTEM) {
			pr_debug("%s: open system specified\n", __func__);
			wl->auth_method = GELIC_EURUS_AUTH_OPEN;
		} else
			ret = -EINVAL;
		break;

	case IW_AUTH_WPA_ENABLED:
		if (param->value) {
			pr_debug("%s: WPA enabled\n", __func__);
			wl->wpa_level = GELIC_WL_WPA_LEVEL_WPA;
		} else {
			pr_debug("%s: WPA disabled\n", __func__);
			wl->wpa_level = GELIC_WL_WPA_LEVEL_NONE;
		}
		break;

	case IW_AUTH_KEY_MGMT:
		if (param->value & IW_AUTH_KEY_MGMT_PSK)
			break;
		/* intentionally fall through */
	default:
		ret = -EOPNOTSUPP;
		break;
	};

	if (!ret)
		set_bit(GELIC_WL_STAT_CONFIGURED, &wl->stat);

	spin_unlock_irqrestore(&wl->lock, irqflag);
	pr_debug("%s: -> %d\n", __func__, ret);
	return ret;
}

static int gelic_wl_get_auth(struct net_device *netdev,
			     struct iw_request_info *info,
			     union iwreq_data *iwreq, char *extra)
{
	struct iw_param *param = &iwreq->param;
	struct gelic_wl_info *wl = port_wl(netdev_port(netdev));
	unsigned long irqflag;
	int ret = 0;

	pr_debug("%s: <- %d\n", __func__, param->flags & IW_AUTH_INDEX);
	spin_lock_irqsave(&wl->lock, irqflag);
	switch (param->flags & IW_AUTH_INDEX) {
	case IW_AUTH_WPA_VERSION:
		switch (wl->wpa_level) {
		case GELIC_WL_WPA_LEVEL_WPA:
			param->value |= IW_AUTH_WPA_VERSION_WPA;
			break;
		case GELIC_WL_WPA_LEVEL_WPA2:
			param->value |= IW_AUTH_WPA_VERSION_WPA2;
			break;
		default:
			param->value |= IW_AUTH_WPA_VERSION_DISABLED;
		}
		break;

	case IW_AUTH_80211_AUTH_ALG:
		if (wl->auth_method == GELIC_EURUS_AUTH_SHARED)
			param->value = IW_AUTH_ALG_SHARED_KEY;
		else if (wl->auth_method == GELIC_EURUS_AUTH_OPEN)
			param->value = IW_AUTH_ALG_OPEN_SYSTEM;
		break;

	case IW_AUTH_WPA_ENABLED:
		switch (wl->wpa_level) {
		case GELIC_WL_WPA_LEVEL_WPA:
		case GELIC_WL_WPA_LEVEL_WPA2:
			param->value = 1;
			break;
		default:
			param->value = 0;
			break;
		}
		break;
	default:
		ret = -EOPNOTSUPP;
	}

	spin_unlock_irqrestore(&wl->lock, irqflag);
	pr_debug("%s: -> %d\n", __func__, ret);
	return ret;
}

/* SIOC{S,G}IWESSID */
static int gelic_wl_set_essid(struct net_device *netdev,
			      struct iw_request_info *info,
			      union iwreq_data *data, char *extra)
{
	struct gelic_wl_info *wl = port_wl(netdev_priv(netdev));
	unsigned long irqflag;

	pr_debug("%s: <- l=%d f=%d\n", __func__,
		 data->essid.length, data->essid.flags);
	if (IW_ESSID_MAX_SIZE < data->essid.length)
		return -EINVAL;

	spin_lock_irqsave(&wl->lock, irqflag);
	if (data->essid.flags) {
		wl->essid_len = data->essid.length;
		memcpy(wl->essid, extra, wl->essid_len);
		pr_debug("%s: essid = '%s'\n", __func__, extra);
		set_bit(GELIC_WL_STAT_ESSID_SET, &wl->stat);
	} else {
		pr_debug("%s: ESSID any \n", __func__);
		clear_bit(GELIC_WL_STAT_ESSID_SET, &wl->stat);
	}
	set_bit(GELIC_WL_STAT_CONFIGURED, &wl->stat);
	spin_unlock_irqrestore(&wl->lock, irqflag);


	gelic_wl_try_associate(netdev); /* FIXME */
	pr_debug("%s: -> \n", __func__);
	return 0;
}

static int gelic_wl_get_essid(struct net_device *netdev,
			      struct iw_request_info *info,
			      union iwreq_data *data, char *extra)
{
	struct gelic_wl_info *wl = port_wl(netdev_priv(netdev));
	unsigned long irqflag;

	pr_debug("%s: <- \n", __func__);
	mutex_lock(&wl->assoc_stat_lock);
	spin_lock_irqsave(&wl->lock, irqflag);
	if (test_bit(GELIC_WL_STAT_ESSID_SET, &wl->stat) ||
	    wl->assoc_stat == GELIC_WL_ASSOC_STAT_ASSOCIATED) {
		memcpy(extra, wl->essid, wl->essid_len);
		data->essid.length = wl->essid_len;
		data->essid.flags = 1;
	} else
		data->essid.flags = 0;

	mutex_unlock(&wl->assoc_stat_lock);
	spin_unlock_irqrestore(&wl->lock, irqflag);
	pr_debug("%s: -> len=%d \n", __func__, data->essid.length);

	return 0;
}

/* SIO{S,G}IWENCODE */
static int gelic_wl_set_encode(struct net_device *netdev,
			       struct iw_request_info *info,
			       union iwreq_data *data, char *extra)
{
	struct gelic_wl_info *wl = port_wl(netdev_priv(netdev));
	struct iw_point *enc = &data->encoding;
	__u16 flags;
	unsigned long irqflag;
	int key_index, index_specified;
	int ret = 0;

	pr_debug("%s: <- \n", __func__);
	flags = enc->flags & IW_ENCODE_FLAGS;
	key_index = enc->flags & IW_ENCODE_INDEX;

	pr_debug("%s: key_index = %d\n", __func__, key_index);
	pr_debug("%s: key_len = %d\n", __func__, enc->length);
	pr_debug("%s: flag=%x\n", __func__, enc->flags & IW_ENCODE_FLAGS);

	if (GELIC_WEP_KEYS < key_index)
		return -EINVAL;

	spin_lock_irqsave(&wl->lock, irqflag);
	if (key_index) {
		index_specified = 1;
		key_index--;
	} else {
		index_specified = 0;
		key_index = wl->current_key;
	}

	if (flags & IW_ENCODE_NOKEY) {
		/* if just IW_ENCODE_NOKEY, change current key index */
		if (!flags && index_specified) {
			wl->current_key = key_index;
			goto done;
		}

		if (flags & IW_ENCODE_DISABLED) {
			if (!index_specified) {
				/* disable encryption */
				wl->group_cipher_method = GELIC_WL_CIPHER_NONE;
				wl->pairwise_cipher_method =
					GELIC_WL_CIPHER_NONE;
				/* invalidate all key */
				wl->key_enabled = 0;
			} else
				clear_bit(key_index, &wl->key_enabled);
		}

		if (flags & IW_ENCODE_OPEN)
			wl->auth_method = GELIC_EURUS_AUTH_OPEN;
		if (flags & IW_ENCODE_RESTRICTED) {
			pr_info("%s: shared key mode enabled\n", __func__);
			wl->auth_method = GELIC_EURUS_AUTH_SHARED;
		}
	} else {
		if (IW_ENCODING_TOKEN_MAX < enc->length) {
			ret = -EINVAL;
			goto done;
		}
		wl->key_len[key_index] = enc->length;
		memcpy(wl->key[key_index], extra, enc->length);
		set_bit(key_index, &wl->key_enabled);
		wl->pairwise_cipher_method = GELIC_WL_CIPHER_WEP;
		wl->group_cipher_method = GELIC_WL_CIPHER_WEP;
	}
	set_bit(GELIC_WL_STAT_CONFIGURED, &wl->stat);
done:
	spin_unlock_irqrestore(&wl->lock, irqflag);
	pr_debug("%s: -> \n", __func__);
	return ret;
}

static int gelic_wl_get_encode(struct net_device *netdev,
			       struct iw_request_info *info,
			       union iwreq_data *data, char *extra)
{
	struct gelic_wl_info *wl = port_wl(netdev_priv(netdev));
	struct iw_point *enc = &data->encoding;
	unsigned long irqflag;
	unsigned int key_index, index_specified;
	int ret = 0;

	pr_debug("%s: <- \n", __func__);
	key_index = enc->flags & IW_ENCODE_INDEX;
	pr_debug("%s: flag=%#x point=%p len=%d extra=%p\n", __func__,
		 enc->flags, enc->pointer, enc->length, extra);
	if (GELIC_WEP_KEYS < key_index)
		return -EINVAL;

	spin_lock_irqsave(&wl->lock, irqflag);
	if (key_index) {
		index_specified = 1;
		key_index--;
	} else {
		index_specified = 0;
		key_index = wl->current_key;
	}

	if (wl->group_cipher_method == GELIC_WL_CIPHER_WEP) {
		switch (wl->auth_method) {
		case GELIC_EURUS_AUTH_OPEN:
			enc->flags = IW_ENCODE_OPEN;
			break;
		case GELIC_EURUS_AUTH_SHARED:
			enc->flags = IW_ENCODE_RESTRICTED;
			break;
		}
	} else
		enc->flags = IW_ENCODE_DISABLED;

	if (test_bit(key_index, &wl->key_enabled)) {
		if (enc->length < wl->key_len[key_index]) {
			ret = -EINVAL;
			goto done;
		}
		enc->length = wl->key_len[key_index];
		memcpy(extra, wl->key[key_index], wl->key_len[key_index]);
	} else {
		enc->length = 0;
		enc->flags |= IW_ENCODE_NOKEY;
	}
	enc->flags |= key_index + 1;
	pr_debug("%s: -> flag=%x len=%d\n", __func__,
		 enc->flags, enc->length);

done:
	spin_unlock_irqrestore(&wl->lock, irqflag);
	return ret;
}

/* SIOC{S,G}IWAP */
static int gelic_wl_set_ap(struct net_device *netdev,
			   struct iw_request_info *info,
			   union iwreq_data *data, char *extra)
{
	struct gelic_wl_info *wl = port_wl(netdev_priv(netdev));
	unsigned long irqflag;

	pr_debug("%s: <-\n", __func__);
	if (data->ap_addr.sa_family != ARPHRD_ETHER)
		return -EINVAL;

	spin_lock_irqsave(&wl->lock, irqflag);
	if (is_valid_ether_addr(data->ap_addr.sa_data)) {
		memcpy(wl->bssid, data->ap_addr.sa_data,
		       ETH_ALEN);
		set_bit(GELIC_WL_STAT_BSSID_SET, &wl->stat);
		set_bit(GELIC_WL_STAT_CONFIGURED, &wl->stat);
		pr_debug("%s: bss=%pM\n", __func__, wl->bssid);
	} else {
		pr_debug("%s: clear bssid\n", __func__);
		clear_bit(GELIC_WL_STAT_BSSID_SET, &wl->stat);
		memset(wl->bssid, 0, ETH_ALEN);
	}
	spin_unlock_irqrestore(&wl->lock, irqflag);
	pr_debug("%s: ->\n", __func__);
	return 0;
}

static int gelic_wl_get_ap(struct net_device *netdev,
			   struct iw_request_info *info,
			   union iwreq_data *data, char *extra)
{
	struct gelic_wl_info *wl = port_wl(netdev_priv(netdev));
	unsigned long irqflag;

	pr_debug("%s: <-\n", __func__);
	mutex_lock(&wl->assoc_stat_lock);
	spin_lock_irqsave(&wl->lock, irqflag);
	if (wl->assoc_stat == GELIC_WL_ASSOC_STAT_ASSOCIATED) {
		data->ap_addr.sa_family = ARPHRD_ETHER;
		memcpy(data->ap_addr.sa_data, wl->active_bssid,
		       ETH_ALEN);
	} else
		memset(data->ap_addr.sa_data, 0, ETH_ALEN);

	spin_unlock_irqrestore(&wl->lock, irqflag);
	mutex_unlock(&wl->assoc_stat_lock);
	pr_debug("%s: ->\n", __func__);
	return 0;
}

/* SIOC{S,G}IWENCODEEXT */
static int gelic_wl_set_encodeext(struct net_device *netdev,
				  struct iw_request_info *info,
				  union iwreq_data *data, char *extra)
{
	struct gelic_wl_info *wl = port_wl(netdev_priv(netdev));
	struct iw_point *enc = &data->encoding;
	struct iw_encode_ext *ext = (struct iw_encode_ext *)extra;
	__u16 alg;
	__u16 flags;