cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cfg.c (53950B)


      1// SPDX-License-Identifier: GPL-2.0
      2/*
      3 * Implement cfg80211 ("iw") support.
      4 *
      5 * Copyright (C) 2009 M&N Solutions GmbH, 61191 Rosbach, Germany
      6 * Holger Schurig <hs4233@mail.mn-solutions.de>
      7 *
      8 */
      9
     10#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
     11
     12#include <linux/hardirq.h>
     13#include <linux/sched.h>
     14#include <linux/wait.h>
     15#include <linux/slab.h>
     16#include <linux/ieee80211.h>
     17#include <net/cfg80211.h>
     18#include <asm/unaligned.h>
     19
     20#include "decl.h"
     21#include "cfg.h"
     22#include "cmd.h"
     23#include "mesh.h"
     24
     25
     26#define CHAN2G(_channel, _freq, _flags) {        \
     27	.band             = NL80211_BAND_2GHZ, \
     28	.center_freq      = (_freq),             \
     29	.hw_value         = (_channel),          \
     30	.flags            = (_flags),            \
     31	.max_antenna_gain = 0,                   \
     32	.max_power        = 30,                  \
     33}
     34
     35static struct ieee80211_channel lbs_2ghz_channels[] = {
     36	CHAN2G(1,  2412, 0),
     37	CHAN2G(2,  2417, 0),
     38	CHAN2G(3,  2422, 0),
     39	CHAN2G(4,  2427, 0),
     40	CHAN2G(5,  2432, 0),
     41	CHAN2G(6,  2437, 0),
     42	CHAN2G(7,  2442, 0),
     43	CHAN2G(8,  2447, 0),
     44	CHAN2G(9,  2452, 0),
     45	CHAN2G(10, 2457, 0),
     46	CHAN2G(11, 2462, 0),
     47	CHAN2G(12, 2467, 0),
     48	CHAN2G(13, 2472, 0),
     49	CHAN2G(14, 2484, 0),
     50};
     51
     52#define RATETAB_ENT(_rate, _hw_value, _flags) { \
     53	.bitrate  = (_rate),                    \
     54	.hw_value = (_hw_value),                \
     55	.flags    = (_flags),                   \
     56}
     57
     58
     59/* Table 6 in section 3.2.1.1 */
     60static struct ieee80211_rate lbs_rates[] = {
     61	RATETAB_ENT(10,  0,  0),
     62	RATETAB_ENT(20,  1,  0),
     63	RATETAB_ENT(55,  2,  0),
     64	RATETAB_ENT(110, 3,  0),
     65	RATETAB_ENT(60,  9,  0),
     66	RATETAB_ENT(90,  6,  0),
     67	RATETAB_ENT(120, 7,  0),
     68	RATETAB_ENT(180, 8,  0),
     69	RATETAB_ENT(240, 9,  0),
     70	RATETAB_ENT(360, 10, 0),
     71	RATETAB_ENT(480, 11, 0),
     72	RATETAB_ENT(540, 12, 0),
     73};
     74
     75static struct ieee80211_supported_band lbs_band_2ghz = {
     76	.channels = lbs_2ghz_channels,
     77	.n_channels = ARRAY_SIZE(lbs_2ghz_channels),
     78	.bitrates = lbs_rates,
     79	.n_bitrates = ARRAY_SIZE(lbs_rates),
     80};
     81
     82
     83static const u32 cipher_suites[] = {
     84	WLAN_CIPHER_SUITE_WEP40,
     85	WLAN_CIPHER_SUITE_WEP104,
     86	WLAN_CIPHER_SUITE_TKIP,
     87	WLAN_CIPHER_SUITE_CCMP,
     88};
     89
     90/* Time to stay on the channel */
     91#define LBS_DWELL_PASSIVE 100
     92#define LBS_DWELL_ACTIVE  40
     93
     94
     95/***************************************************************************
     96 * Misc utility functions
     97 *
     98 * TLVs are Marvell specific. They are very similar to IEs, they have the
     99 * same structure: type, length, data*. The only difference: for IEs, the
    100 * type and length are u8, but for TLVs they're __le16.
    101 */
    102
    103/*
    104 * Convert NL80211's auth_type to the one from Libertas, see chapter 5.9.1
    105 * in the firmware spec
    106 */
    107static int lbs_auth_to_authtype(enum nl80211_auth_type auth_type)
    108{
    109	int ret = -ENOTSUPP;
    110
    111	switch (auth_type) {
    112	case NL80211_AUTHTYPE_OPEN_SYSTEM:
    113	case NL80211_AUTHTYPE_SHARED_KEY:
    114		ret = auth_type;
    115		break;
    116	case NL80211_AUTHTYPE_AUTOMATIC:
    117		ret = NL80211_AUTHTYPE_OPEN_SYSTEM;
    118		break;
    119	case NL80211_AUTHTYPE_NETWORK_EAP:
    120		ret = 0x80;
    121		break;
    122	default:
    123		/* silence compiler */
    124		break;
    125	}
    126	return ret;
    127}
    128
    129
    130/*
    131 * Various firmware commands need the list of supported rates, but with
    132 * the hight-bit set for basic rates
    133 */
    134static int lbs_add_rates(u8 *rates)
    135{
    136	size_t i;
    137
    138	for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
    139		u8 rate = lbs_rates[i].bitrate / 5;
    140		if (rate == 0x02 || rate == 0x04 ||
    141		    rate == 0x0b || rate == 0x16)
    142			rate |= 0x80;
    143		rates[i] = rate;
    144	}
    145	return ARRAY_SIZE(lbs_rates);
    146}
    147
    148
    149/***************************************************************************
    150 * TLV utility functions
    151 *
    152 * TLVs are Marvell specific. They are very similar to IEs, they have the
    153 * same structure: type, length, data*. The only difference: for IEs, the
    154 * type and length are u8, but for TLVs they're __le16.
    155 */
    156
    157
    158/*
    159 * Add ssid TLV
    160 */
    161#define LBS_MAX_SSID_TLV_SIZE			\
    162	(sizeof(struct mrvl_ie_header)		\
    163	 + IEEE80211_MAX_SSID_LEN)
    164
    165static int lbs_add_ssid_tlv(u8 *tlv, const u8 *ssid, int ssid_len)
    166{
    167	struct mrvl_ie_ssid_param_set *ssid_tlv = (void *)tlv;
    168
    169	/*
    170	 * TLV-ID SSID  00 00
    171	 * length       06 00
    172	 * ssid         4d 4e 54 45 53 54
    173	 */
    174	ssid_tlv->header.type = cpu_to_le16(TLV_TYPE_SSID);
    175	ssid_tlv->header.len = cpu_to_le16(ssid_len);
    176	memcpy(ssid_tlv->ssid, ssid, ssid_len);
    177	return sizeof(ssid_tlv->header) + ssid_len;
    178}
    179
    180
    181/*
    182 * Add channel list TLV (section 8.4.2)
    183 *
    184 * Actual channel data comes from priv->wdev->wiphy->channels.
    185 */
    186#define LBS_MAX_CHANNEL_LIST_TLV_SIZE					\
    187	(sizeof(struct mrvl_ie_header)					\
    188	 + (LBS_SCAN_BEFORE_NAP * sizeof(struct chanscanparamset)))
    189
    190static int lbs_add_channel_list_tlv(struct lbs_private *priv, u8 *tlv,
    191				    int last_channel, int active_scan)
    192{
    193	int chanscanparamsize = sizeof(struct chanscanparamset) *
    194		(last_channel - priv->scan_channel);
    195
    196	struct mrvl_ie_header *header = (void *) tlv;
    197
    198	/*
    199	 * TLV-ID CHANLIST  01 01
    200	 * length           0e 00
    201	 * channel          00 01 00 00 00 64 00
    202	 *   radio type     00
    203	 *   channel           01
    204	 *   scan type            00
    205	 *   min scan time           00 00
    206	 *   max scan time                 64 00
    207	 * channel 2        00 02 00 00 00 64 00
    208	 *
    209	 */
    210
    211	header->type = cpu_to_le16(TLV_TYPE_CHANLIST);
    212	header->len  = cpu_to_le16(chanscanparamsize);
    213	tlv += sizeof(struct mrvl_ie_header);
    214
    215	/* lbs_deb_scan("scan: channels %d to %d\n", priv->scan_channel,
    216		     last_channel); */
    217	memset(tlv, 0, chanscanparamsize);
    218
    219	while (priv->scan_channel < last_channel) {
    220		struct chanscanparamset *param = (void *) tlv;
    221
    222		param->radiotype = CMD_SCAN_RADIO_TYPE_BG;
    223		param->channumber =
    224			priv->scan_req->channels[priv->scan_channel]->hw_value;
    225		if (active_scan) {
    226			param->maxscantime = cpu_to_le16(LBS_DWELL_ACTIVE);
    227		} else {
    228			param->chanscanmode.passivescan = 1;
    229			param->maxscantime = cpu_to_le16(LBS_DWELL_PASSIVE);
    230		}
    231		tlv += sizeof(struct chanscanparamset);
    232		priv->scan_channel++;
    233	}
    234	return sizeof(struct mrvl_ie_header) + chanscanparamsize;
    235}
    236
    237
    238/*
    239 * Add rates TLV
    240 *
    241 * The rates are in lbs_bg_rates[], but for the 802.11b
    242 * rates the high bit is set. We add this TLV only because
    243 * there's a firmware which otherwise doesn't report all
    244 * APs in range.
    245 */
    246#define LBS_MAX_RATES_TLV_SIZE			\
    247	(sizeof(struct mrvl_ie_header)		\
    248	 + (ARRAY_SIZE(lbs_rates)))
    249
    250/* Adds a TLV with all rates the hardware supports */
    251static int lbs_add_supported_rates_tlv(u8 *tlv)
    252{
    253	size_t i;
    254	struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
    255
    256	/*
    257	 * TLV-ID RATES  01 00
    258	 * length        0e 00
    259	 * rates         82 84 8b 96 0c 12 18 24 30 48 60 6c
    260	 */
    261	rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
    262	tlv += sizeof(rate_tlv->header);
    263	i = lbs_add_rates(tlv);
    264	tlv += i;
    265	rate_tlv->header.len = cpu_to_le16(i);
    266	return sizeof(rate_tlv->header) + i;
    267}
    268
    269/* Add common rates from a TLV and return the new end of the TLV */
    270static u8 *
    271add_ie_rates(u8 *tlv, const u8 *ie, int *nrates)
    272{
    273	int hw, ap, ap_max = ie[1];
    274	u8 hw_rate;
    275
    276	if (ap_max > MAX_RATES) {
    277		lbs_deb_assoc("invalid rates\n");
    278		return tlv;
    279	}
    280	/* Advance past IE header */
    281	ie += 2;
    282
    283	lbs_deb_hex(LBS_DEB_ASSOC, "AP IE Rates", (u8 *) ie, ap_max);
    284
    285	for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
    286		hw_rate = lbs_rates[hw].bitrate / 5;
    287		for (ap = 0; ap < ap_max; ap++) {
    288			if (hw_rate == (ie[ap] & 0x7f)) {
    289				*tlv++ = ie[ap];
    290				*nrates = *nrates + 1;
    291			}
    292		}
    293	}
    294	return tlv;
    295}
    296
    297/*
    298 * Adds a TLV with all rates the hardware *and* BSS supports.
    299 */
    300static int lbs_add_common_rates_tlv(u8 *tlv, struct cfg80211_bss *bss)
    301{
    302	struct mrvl_ie_rates_param_set *rate_tlv = (void *)tlv;
    303	const u8 *rates_eid, *ext_rates_eid;
    304	int n = 0;
    305
    306	rcu_read_lock();
    307	rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
    308	ext_rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_EXT_SUPP_RATES);
    309
    310	/*
    311	 * 01 00                   TLV_TYPE_RATES
    312	 * 04 00                   len
    313	 * 82 84 8b 96             rates
    314	 */
    315	rate_tlv->header.type = cpu_to_le16(TLV_TYPE_RATES);
    316	tlv += sizeof(rate_tlv->header);
    317
    318	/* Add basic rates */
    319	if (rates_eid) {
    320		tlv = add_ie_rates(tlv, rates_eid, &n);
    321
    322		/* Add extended rates, if any */
    323		if (ext_rates_eid)
    324			tlv = add_ie_rates(tlv, ext_rates_eid, &n);
    325	} else {
    326		lbs_deb_assoc("assoc: bss had no basic rate IE\n");
    327		/* Fallback: add basic 802.11b rates */
    328		*tlv++ = 0x82;
    329		*tlv++ = 0x84;
    330		*tlv++ = 0x8b;
    331		*tlv++ = 0x96;
    332		n = 4;
    333	}
    334	rcu_read_unlock();
    335
    336	rate_tlv->header.len = cpu_to_le16(n);
    337	return sizeof(rate_tlv->header) + n;
    338}
    339
    340
    341/*
    342 * Add auth type TLV.
    343 *
    344 * This is only needed for newer firmware (V9 and up).
    345 */
    346#define LBS_MAX_AUTH_TYPE_TLV_SIZE \
    347	sizeof(struct mrvl_ie_auth_type)
    348
    349static int lbs_add_auth_type_tlv(u8 *tlv, enum nl80211_auth_type auth_type)
    350{
    351	struct mrvl_ie_auth_type *auth = (void *) tlv;
    352
    353	/*
    354	 * 1f 01  TLV_TYPE_AUTH_TYPE
    355	 * 01 00  len
    356	 * 01     auth type
    357	 */
    358	auth->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
    359	auth->header.len = cpu_to_le16(sizeof(*auth)-sizeof(auth->header));
    360	auth->auth = cpu_to_le16(lbs_auth_to_authtype(auth_type));
    361	return sizeof(*auth);
    362}
    363
    364
    365/*
    366 * Add channel (phy ds) TLV
    367 */
    368#define LBS_MAX_CHANNEL_TLV_SIZE \
    369	sizeof(struct mrvl_ie_header)
    370
    371static int lbs_add_channel_tlv(u8 *tlv, u8 channel)
    372{
    373	struct mrvl_ie_ds_param_set *ds = (void *) tlv;
    374
    375	/*
    376	 * 03 00  TLV_TYPE_PHY_DS
    377	 * 01 00  len
    378	 * 06     channel
    379	 */
    380	ds->header.type = cpu_to_le16(TLV_TYPE_PHY_DS);
    381	ds->header.len = cpu_to_le16(sizeof(*ds)-sizeof(ds->header));
    382	ds->channel = channel;
    383	return sizeof(*ds);
    384}
    385
    386
    387/*
    388 * Add (empty) CF param TLV of the form:
    389 */
    390#define LBS_MAX_CF_PARAM_TLV_SIZE		\
    391	sizeof(struct mrvl_ie_header)
    392
    393static int lbs_add_cf_param_tlv(u8 *tlv)
    394{
    395	struct mrvl_ie_cf_param_set *cf = (void *)tlv;
    396
    397	/*
    398	 * 04 00  TLV_TYPE_CF
    399	 * 06 00  len
    400	 * 00     cfpcnt
    401	 * 00     cfpperiod
    402	 * 00 00  cfpmaxduration
    403	 * 00 00  cfpdurationremaining
    404	 */
    405	cf->header.type = cpu_to_le16(TLV_TYPE_CF);
    406	cf->header.len = cpu_to_le16(sizeof(*cf)-sizeof(cf->header));
    407	return sizeof(*cf);
    408}
    409
    410/*
    411 * Add WPA TLV
    412 */
    413#define LBS_MAX_WPA_TLV_SIZE			\
    414	(sizeof(struct mrvl_ie_header)		\
    415	 + 128 /* TODO: I guessed the size */)
    416
    417static int lbs_add_wpa_tlv(u8 *tlv, const u8 *ie, u8 ie_len)
    418{
    419	size_t tlv_len;
    420
    421	/*
    422	 * We need just convert an IE to an TLV. IEs use u8 for the header,
    423	 *   u8      type
    424	 *   u8      len
    425	 *   u8[]    data
    426	 * but TLVs use __le16 instead:
    427	 *   __le16  type
    428	 *   __le16  len
    429	 *   u8[]    data
    430	 */
    431	*tlv++ = *ie++;
    432	*tlv++ = 0;
    433	tlv_len = *tlv++ = *ie++;
    434	*tlv++ = 0;
    435	while (tlv_len--)
    436		*tlv++ = *ie++;
    437	/* the TLV is two bytes larger than the IE */
    438	return ie_len + 2;
    439}
    440
    441/*
    442 * Set Channel
    443 */
    444
    445static int lbs_cfg_set_monitor_channel(struct wiphy *wiphy,
    446				       struct cfg80211_chan_def *chandef)
    447{
    448	struct lbs_private *priv = wiphy_priv(wiphy);
    449	int ret = -ENOTSUPP;
    450
    451	if (cfg80211_get_chandef_type(chandef) != NL80211_CHAN_NO_HT)
    452		goto out;
    453
    454	ret = lbs_set_channel(priv, chandef->chan->hw_value);
    455
    456 out:
    457	return ret;
    458}
    459
    460static int lbs_cfg_set_mesh_channel(struct wiphy *wiphy,
    461				    struct net_device *netdev,
    462				    struct ieee80211_channel *channel)
    463{
    464	struct lbs_private *priv = wiphy_priv(wiphy);
    465	int ret = -ENOTSUPP;
    466
    467	if (netdev != priv->mesh_dev)
    468		goto out;
    469
    470	ret = lbs_mesh_set_channel(priv, channel->hw_value);
    471
    472 out:
    473	return ret;
    474}
    475
    476
    477
    478/*
    479 * Scanning
    480 */
    481
    482/*
    483 * When scanning, the firmware doesn't send a nul packet with the power-safe
    484 * bit to the AP. So we cannot stay away from our current channel too long,
    485 * otherwise we loose data. So take a "nap" while scanning every other
    486 * while.
    487 */
    488#define LBS_SCAN_BEFORE_NAP 4
    489
    490
    491/*
    492 * When the firmware reports back a scan-result, it gives us an "u8 rssi",
    493 * which isn't really an RSSI, as it becomes larger when moving away from
    494 * the AP. Anyway, we need to convert that into mBm.
    495 */
    496#define LBS_SCAN_RSSI_TO_MBM(rssi) \
    497	((-(int)rssi + 3)*100)
    498
    499static int lbs_ret_scan(struct lbs_private *priv, unsigned long dummy,
    500	struct cmd_header *resp)
    501{
    502	struct cfg80211_bss *bss;
    503	struct cmd_ds_802_11_scan_rsp *scanresp = (void *)resp;
    504	int bsssize;
    505	const u8 *pos;
    506	const u8 *tsfdesc;
    507	int tsfsize;
    508	int i;
    509	int ret = -EILSEQ;
    510
    511	bsssize = get_unaligned_le16(&scanresp->bssdescriptsize);
    512
    513	lbs_deb_scan("scan response: %d BSSs (%d bytes); resp size %d bytes\n",
    514			scanresp->nr_sets, bsssize, le16_to_cpu(resp->size));
    515
    516	if (scanresp->nr_sets == 0) {
    517		ret = 0;
    518		goto done;
    519	}
    520
    521	/*
    522	 * The general layout of the scan response is described in chapter
    523	 * 5.7.1. Basically we have a common part, then any number of BSS
    524	 * descriptor sections. Finally we have section with the same number
    525	 * of TSFs.
    526	 *
    527	 * cmd_ds_802_11_scan_rsp
    528	 *   cmd_header
    529	 *   pos_size
    530	 *   nr_sets
    531	 *   bssdesc 1
    532	 *     bssid
    533	 *     rssi
    534	 *     timestamp
    535	 *     intvl
    536	 *     capa
    537	 *     IEs
    538	 *   bssdesc 2
    539	 *   bssdesc n
    540	 *   MrvlIEtypes_TsfFimestamp_t
    541	 *     TSF for BSS 1
    542	 *     TSF for BSS 2
    543	 *     TSF for BSS n
    544	 */
    545
    546	pos = scanresp->bssdesc_and_tlvbuffer;
    547
    548	lbs_deb_hex(LBS_DEB_SCAN, "SCAN_RSP", scanresp->bssdesc_and_tlvbuffer,
    549			scanresp->bssdescriptsize);
    550
    551	tsfdesc = pos + bsssize;
    552	tsfsize = 4 + 8 * scanresp->nr_sets;
    553	lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TSF", (u8 *) tsfdesc, tsfsize);
    554
    555	/* Validity check: we expect a Marvell-Local TLV */
    556	i = get_unaligned_le16(tsfdesc);
    557	tsfdesc += 2;
    558	if (i != TLV_TYPE_TSFTIMESTAMP) {
    559		lbs_deb_scan("scan response: invalid TSF Timestamp %d\n", i);
    560		goto done;
    561	}
    562
    563	/*
    564	 * Validity check: the TLV holds TSF values with 8 bytes each, so
    565	 * the size in the TLV must match the nr_sets value
    566	 */
    567	i = get_unaligned_le16(tsfdesc);
    568	tsfdesc += 2;
    569	if (i / 8 != scanresp->nr_sets) {
    570		lbs_deb_scan("scan response: invalid number of TSF timestamp "
    571			     "sets (expected %d got %d)\n", scanresp->nr_sets,
    572			     i / 8);
    573		goto done;
    574	}
    575
    576	for (i = 0; i < scanresp->nr_sets; i++) {
    577		const u8 *bssid;
    578		const u8 *ie;
    579		int left;
    580		int ielen;
    581		int rssi;
    582		u16 intvl;
    583		u16 capa;
    584		int chan_no = -1;
    585		const u8 *ssid = NULL;
    586		u8 ssid_len = 0;
    587
    588		int len = get_unaligned_le16(pos);
    589		pos += 2;
    590
    591		/* BSSID */
    592		bssid = pos;
    593		pos += ETH_ALEN;
    594		/* RSSI */
    595		rssi = *pos++;
    596		/* Packet time stamp */
    597		pos += 8;
    598		/* Beacon interval */
    599		intvl = get_unaligned_le16(pos);
    600		pos += 2;
    601		/* Capabilities */
    602		capa = get_unaligned_le16(pos);
    603		pos += 2;
    604
    605		/* To find out the channel, we must parse the IEs */
    606		ie = pos;
    607		/*
    608		 * 6+1+8+2+2: size of BSSID, RSSI, time stamp, beacon
    609		 * interval, capabilities
    610		 */
    611		ielen = left = len - (6 + 1 + 8 + 2 + 2);
    612		while (left >= 2) {
    613			u8 id, elen;
    614			id = *pos++;
    615			elen = *pos++;
    616			left -= 2;
    617			if (elen > left) {
    618				lbs_deb_scan("scan response: invalid IE fmt\n");
    619				goto done;
    620			}
    621
    622			if (id == WLAN_EID_DS_PARAMS)
    623				chan_no = *pos;
    624			if (id == WLAN_EID_SSID) {
    625				ssid = pos;
    626				ssid_len = elen;
    627			}
    628			left -= elen;
    629			pos += elen;
    630		}
    631
    632		/* No channel, no luck */
    633		if (chan_no != -1) {
    634			struct wiphy *wiphy = priv->wdev->wiphy;
    635			int freq = ieee80211_channel_to_frequency(chan_no,
    636							NL80211_BAND_2GHZ);
    637			struct ieee80211_channel *channel =
    638				ieee80211_get_channel(wiphy, freq);
    639
    640			lbs_deb_scan("scan: %pM, capa %04x, chan %2d, %*pE, %d dBm\n",
    641				     bssid, capa, chan_no, ssid_len, ssid,
    642				     LBS_SCAN_RSSI_TO_MBM(rssi)/100);
    643
    644			if (channel &&
    645			    !(channel->flags & IEEE80211_CHAN_DISABLED)) {
    646				bss = cfg80211_inform_bss(wiphy, channel,
    647					CFG80211_BSS_FTYPE_UNKNOWN,
    648					bssid, get_unaligned_le64(tsfdesc),
    649					capa, intvl, ie, ielen,
    650					LBS_SCAN_RSSI_TO_MBM(rssi),
    651					GFP_KERNEL);
    652				cfg80211_put_bss(wiphy, bss);
    653			}
    654		} else
    655			lbs_deb_scan("scan response: missing BSS channel IE\n");
    656
    657		tsfdesc += 8;
    658	}
    659	ret = 0;
    660
    661 done:
    662	return ret;
    663}
    664
    665
    666/*
    667 * Our scan command contains a TLV, consting of a SSID TLV, a channel list
    668 * TLV and a rates TLV. Determine the maximum size of them:
    669 */
    670#define LBS_SCAN_MAX_CMD_SIZE			\
    671	(sizeof(struct cmd_ds_802_11_scan)	\
    672	 + LBS_MAX_SSID_TLV_SIZE		\
    673	 + LBS_MAX_CHANNEL_LIST_TLV_SIZE	\
    674	 + LBS_MAX_RATES_TLV_SIZE)
    675
    676/*
    677 * Assumes priv->scan_req is initialized and valid
    678 * Assumes priv->scan_channel is initialized
    679 */
    680static void lbs_scan_worker(struct work_struct *work)
    681{
    682	struct lbs_private *priv =
    683		container_of(work, struct lbs_private, scan_work.work);
    684	struct cmd_ds_802_11_scan *scan_cmd;
    685	u8 *tlv; /* pointer into our current, growing TLV storage area */
    686	int last_channel;
    687	int running, carrier;
    688
    689	scan_cmd = kzalloc(LBS_SCAN_MAX_CMD_SIZE, GFP_KERNEL);
    690	if (scan_cmd == NULL)
    691		return;
    692
    693	/* prepare fixed part of scan command */
    694	scan_cmd->bsstype = CMD_BSS_TYPE_ANY;
    695
    696	/* stop network while we're away from our main channel */
    697	running = !netif_queue_stopped(priv->dev);
    698	carrier = netif_carrier_ok(priv->dev);
    699	if (running)
    700		netif_stop_queue(priv->dev);
    701	if (carrier)
    702		netif_carrier_off(priv->dev);
    703
    704	/* prepare fixed part of scan command */
    705	tlv = scan_cmd->tlvbuffer;
    706
    707	/* add SSID TLV */
    708	if (priv->scan_req->n_ssids && priv->scan_req->ssids[0].ssid_len > 0)
    709		tlv += lbs_add_ssid_tlv(tlv,
    710					priv->scan_req->ssids[0].ssid,
    711					priv->scan_req->ssids[0].ssid_len);
    712
    713	/* add channel TLVs */
    714	last_channel = priv->scan_channel + LBS_SCAN_BEFORE_NAP;
    715	if (last_channel > priv->scan_req->n_channels)
    716		last_channel = priv->scan_req->n_channels;
    717	tlv += lbs_add_channel_list_tlv(priv, tlv, last_channel,
    718		priv->scan_req->n_ssids);
    719
    720	/* add rates TLV */
    721	tlv += lbs_add_supported_rates_tlv(tlv);
    722
    723	if (priv->scan_channel < priv->scan_req->n_channels) {
    724		cancel_delayed_work(&priv->scan_work);
    725		if (netif_running(priv->dev))
    726			queue_delayed_work(priv->work_thread, &priv->scan_work,
    727				msecs_to_jiffies(300));
    728	}
    729
    730	/* This is the final data we are about to send */
    731	scan_cmd->hdr.size = cpu_to_le16(tlv - (u8 *)scan_cmd);
    732	lbs_deb_hex(LBS_DEB_SCAN, "SCAN_CMD", (void *)scan_cmd,
    733		    sizeof(*scan_cmd));
    734	lbs_deb_hex(LBS_DEB_SCAN, "SCAN_TLV", scan_cmd->tlvbuffer,
    735		    tlv - scan_cmd->tlvbuffer);
    736
    737	__lbs_cmd(priv, CMD_802_11_SCAN, &scan_cmd->hdr,
    738		le16_to_cpu(scan_cmd->hdr.size),
    739		lbs_ret_scan, 0);
    740
    741	if (priv->scan_channel >= priv->scan_req->n_channels) {
    742		/* Mark scan done */
    743		cancel_delayed_work(&priv->scan_work);
    744		lbs_scan_done(priv);
    745	}
    746
    747	/* Restart network */
    748	if (carrier)
    749		netif_carrier_on(priv->dev);
    750	if (running && !priv->tx_pending_len)
    751		netif_wake_queue(priv->dev);
    752
    753	kfree(scan_cmd);
    754
    755	/* Wake up anything waiting on scan completion */
    756	if (priv->scan_req == NULL) {
    757		lbs_deb_scan("scan: waking up waiters\n");
    758		wake_up_all(&priv->scan_q);
    759	}
    760}
    761
    762static void _internal_start_scan(struct lbs_private *priv, bool internal,
    763	struct cfg80211_scan_request *request)
    764{
    765	lbs_deb_scan("scan: ssids %d, channels %d, ie_len %zd\n",
    766		request->n_ssids, request->n_channels, request->ie_len);
    767
    768	priv->scan_channel = 0;
    769	priv->scan_req = request;
    770	priv->internal_scan = internal;
    771
    772	queue_delayed_work(priv->work_thread, &priv->scan_work,
    773		msecs_to_jiffies(50));
    774}
    775
    776/*
    777 * Clean up priv->scan_req.  Should be used to handle the allocation details.
    778 */
    779void lbs_scan_done(struct lbs_private *priv)
    780{
    781	WARN_ON(!priv->scan_req);
    782
    783	if (priv->internal_scan) {
    784		kfree(priv->scan_req);
    785	} else {
    786		struct cfg80211_scan_info info = {
    787			.aborted = false,
    788		};
    789
    790		cfg80211_scan_done(priv->scan_req, &info);
    791	}
    792
    793	priv->scan_req = NULL;
    794}
    795
    796static int lbs_cfg_scan(struct wiphy *wiphy,
    797	struct cfg80211_scan_request *request)
    798{
    799	struct lbs_private *priv = wiphy_priv(wiphy);
    800	int ret = 0;
    801
    802	if (priv->scan_req || delayed_work_pending(&priv->scan_work)) {
    803		/* old scan request not yet processed */
    804		ret = -EAGAIN;
    805		goto out;
    806	}
    807
    808	_internal_start_scan(priv, false, request);
    809
    810	if (priv->surpriseremoved)
    811		ret = -EIO;
    812
    813 out:
    814	return ret;
    815}
    816
    817
    818
    819
    820/*
    821 * Events
    822 */
    823
    824void lbs_send_disconnect_notification(struct lbs_private *priv,
    825				      bool locally_generated)
    826{
    827	cfg80211_disconnected(priv->dev, 0, NULL, 0, locally_generated,
    828			      GFP_KERNEL);
    829}
    830
    831void lbs_send_mic_failureevent(struct lbs_private *priv, u32 event)
    832{
    833	cfg80211_michael_mic_failure(priv->dev,
    834		priv->assoc_bss,
    835		event == MACREG_INT_CODE_MIC_ERR_MULTICAST ?
    836			NL80211_KEYTYPE_GROUP :
    837			NL80211_KEYTYPE_PAIRWISE,
    838		-1,
    839		NULL,
    840		GFP_KERNEL);
    841}
    842
    843
    844
    845
    846/*
    847 * Connect/disconnect
    848 */
    849
    850
    851/*
    852 * This removes all WEP keys
    853 */
    854static int lbs_remove_wep_keys(struct lbs_private *priv)
    855{
    856	struct cmd_ds_802_11_set_wep cmd;
    857	int ret;
    858
    859	memset(&cmd, 0, sizeof(cmd));
    860	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
    861	cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
    862	cmd.action = cpu_to_le16(CMD_ACT_REMOVE);
    863
    864	ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
    865
    866	return ret;
    867}
    868
    869/*
    870 * Set WEP keys
    871 */
    872static int lbs_set_wep_keys(struct lbs_private *priv)
    873{
    874	struct cmd_ds_802_11_set_wep cmd;
    875	int i;
    876	int ret;
    877
    878	/*
    879	 * command         13 00
    880	 * size            50 00
    881	 * sequence        xx xx
    882	 * result          00 00
    883	 * action          02 00     ACT_ADD
    884	 * transmit key    00 00
    885	 * type for key 1  01        WEP40
    886	 * type for key 2  00
    887	 * type for key 3  00
    888	 * type for key 4  00
    889	 * key 1           39 39 39 39 39 00 00 00
    890	 *                 00 00 00 00 00 00 00 00
    891	 * key 2           00 00 00 00 00 00 00 00
    892	 *                 00 00 00 00 00 00 00 00
    893	 * key 3           00 00 00 00 00 00 00 00
    894	 *                 00 00 00 00 00 00 00 00
    895	 * key 4           00 00 00 00 00 00 00 00
    896	 */
    897	if (priv->wep_key_len[0] || priv->wep_key_len[1] ||
    898	    priv->wep_key_len[2] || priv->wep_key_len[3]) {
    899		/* Only set wep keys if we have at least one of them */
    900		memset(&cmd, 0, sizeof(cmd));
    901		cmd.hdr.size = cpu_to_le16(sizeof(cmd));
    902		cmd.keyindex = cpu_to_le16(priv->wep_tx_key);
    903		cmd.action = cpu_to_le16(CMD_ACT_ADD);
    904
    905		for (i = 0; i < 4; i++) {
    906			switch (priv->wep_key_len[i]) {
    907			case WLAN_KEY_LEN_WEP40:
    908				cmd.keytype[i] = CMD_TYPE_WEP_40_BIT;
    909				break;
    910			case WLAN_KEY_LEN_WEP104:
    911				cmd.keytype[i] = CMD_TYPE_WEP_104_BIT;
    912				break;
    913			default:
    914				cmd.keytype[i] = 0;
    915				break;
    916			}
    917			memcpy(cmd.keymaterial[i], priv->wep_key[i],
    918			       priv->wep_key_len[i]);
    919		}
    920
    921		ret = lbs_cmd_with_response(priv, CMD_802_11_SET_WEP, &cmd);
    922	} else {
    923		/* Otherwise remove all wep keys */
    924		ret = lbs_remove_wep_keys(priv);
    925	}
    926
    927	return ret;
    928}
    929
    930
    931/*
    932 * Enable/Disable RSN status
    933 */
    934static int lbs_enable_rsn(struct lbs_private *priv, int enable)
    935{
    936	struct cmd_ds_802_11_enable_rsn cmd;
    937	int ret;
    938
    939	/*
    940	 * cmd       2f 00
    941	 * size      0c 00
    942	 * sequence  xx xx
    943	 * result    00 00
    944	 * action    01 00    ACT_SET
    945	 * enable    01 00
    946	 */
    947	memset(&cmd, 0, sizeof(cmd));
    948	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
    949	cmd.action = cpu_to_le16(CMD_ACT_SET);
    950	cmd.enable = cpu_to_le16(enable);
    951
    952	ret = lbs_cmd_with_response(priv, CMD_802_11_ENABLE_RSN, &cmd);
    953
    954	return ret;
    955}
    956
    957
    958/*
    959 * Set WPA/WPA key material
    960 */
    961
    962/*
    963 * like "struct cmd_ds_802_11_key_material", but with cmd_header. Once we
    964 * get rid of WEXT, this should go into host.h
    965 */
    966
    967struct cmd_key_material {
    968	struct cmd_header hdr;
    969
    970	__le16 action;
    971	struct MrvlIEtype_keyParamSet param;
    972} __packed;
    973
    974static int lbs_set_key_material(struct lbs_private *priv,
    975				int key_type, int key_info,
    976				const u8 *key, u16 key_len)
    977{
    978	struct cmd_key_material cmd;
    979	int ret;
    980
    981	/*
    982	 * Example for WPA (TKIP):
    983	 *
    984	 * cmd       5e 00
    985	 * size      34 00
    986	 * sequence  xx xx
    987	 * result    00 00
    988	 * action    01 00
    989	 * TLV type  00 01    key param
    990	 * length    00 26
    991	 * key type  01 00    TKIP
    992	 * key info  06 00    UNICAST | ENABLED
    993	 * key len   20 00
    994	 * key       32 bytes
    995	 */
    996	memset(&cmd, 0, sizeof(cmd));
    997	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
    998	cmd.action = cpu_to_le16(CMD_ACT_SET);
    999	cmd.param.type = cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
   1000	cmd.param.length = cpu_to_le16(sizeof(cmd.param) - 4);
   1001	cmd.param.keytypeid = cpu_to_le16(key_type);
   1002	cmd.param.keyinfo = cpu_to_le16(key_info);
   1003	cmd.param.keylen = cpu_to_le16(key_len);
   1004	if (key && key_len)
   1005		memcpy(cmd.param.key, key, key_len);
   1006
   1007	ret = lbs_cmd_with_response(priv, CMD_802_11_KEY_MATERIAL, &cmd);
   1008
   1009	return ret;
   1010}
   1011
   1012
   1013/*
   1014 * Sets the auth type (open, shared, etc) in the firmware. That
   1015 * we use CMD_802_11_AUTHENTICATE is misleading, this firmware
   1016 * command doesn't send an authentication frame at all, it just
   1017 * stores the auth_type.
   1018 */
   1019static int lbs_set_authtype(struct lbs_private *priv,
   1020			    struct cfg80211_connect_params *sme)
   1021{
   1022	struct cmd_ds_802_11_authenticate cmd;
   1023	int ret;
   1024
   1025	/*
   1026	 * cmd        11 00
   1027	 * size       19 00
   1028	 * sequence   xx xx
   1029	 * result     00 00
   1030	 * BSS id     00 13 19 80 da 30
   1031	 * auth type  00
   1032	 * reserved   00 00 00 00 00 00 00 00 00 00
   1033	 */
   1034	memset(&cmd, 0, sizeof(cmd));
   1035	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
   1036	if (sme->bssid)
   1037		memcpy(cmd.bssid, sme->bssid, ETH_ALEN);
   1038	/* convert auth_type */
   1039	ret = lbs_auth_to_authtype(sme->auth_type);
   1040	if (ret < 0)
   1041		goto done;
   1042
   1043	cmd.authtype = ret;
   1044	ret = lbs_cmd_with_response(priv, CMD_802_11_AUTHENTICATE, &cmd);
   1045
   1046 done:
   1047	return ret;
   1048}
   1049
   1050
   1051/*
   1052 * Create association request
   1053 */
   1054#define LBS_ASSOC_MAX_CMD_SIZE                     \
   1055	(sizeof(struct cmd_ds_802_11_associate)    \
   1056	 + LBS_MAX_SSID_TLV_SIZE                   \
   1057	 + LBS_MAX_CHANNEL_TLV_SIZE                \
   1058	 + LBS_MAX_CF_PARAM_TLV_SIZE               \
   1059	 + LBS_MAX_AUTH_TYPE_TLV_SIZE              \
   1060	 + LBS_MAX_WPA_TLV_SIZE)
   1061
   1062static int lbs_associate(struct lbs_private *priv,
   1063		struct cfg80211_bss *bss,
   1064		struct cfg80211_connect_params *sme)
   1065{
   1066	struct cmd_ds_802_11_associate_response *resp;
   1067	struct cmd_ds_802_11_associate *cmd = kzalloc(LBS_ASSOC_MAX_CMD_SIZE,
   1068						      GFP_KERNEL);
   1069	const u8 *ssid_eid;
   1070	size_t len, resp_ie_len;
   1071	int status;
   1072	int ret;
   1073	u8 *pos;
   1074	u8 *tmp;
   1075
   1076	if (!cmd) {
   1077		ret = -ENOMEM;
   1078		goto done;
   1079	}
   1080	pos = &cmd->iebuf[0];
   1081
   1082	/*
   1083	 * cmd              50 00
   1084	 * length           34 00
   1085	 * sequence         xx xx
   1086	 * result           00 00
   1087	 * BSS id           00 13 19 80 da 30
   1088	 * capabilities     11 00
   1089	 * listen interval  0a 00
   1090	 * beacon interval  00 00
   1091	 * DTIM period      00
   1092	 * TLVs             xx   (up to 512 bytes)
   1093	 */
   1094	cmd->hdr.command = cpu_to_le16(CMD_802_11_ASSOCIATE);
   1095
   1096	/* Fill in static fields */
   1097	memcpy(cmd->bssid, bss->bssid, ETH_ALEN);
   1098	cmd->listeninterval = cpu_to_le16(MRVDRV_DEFAULT_LISTEN_INTERVAL);
   1099	cmd->capability = cpu_to_le16(bss->capability);
   1100
   1101	/* add SSID TLV */
   1102	rcu_read_lock();
   1103	ssid_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SSID);
   1104	if (ssid_eid)
   1105		pos += lbs_add_ssid_tlv(pos, ssid_eid + 2, ssid_eid[1]);
   1106	else
   1107		lbs_deb_assoc("no SSID\n");
   1108	rcu_read_unlock();
   1109
   1110	/* add DS param TLV */
   1111	if (bss->channel)
   1112		pos += lbs_add_channel_tlv(pos, bss->channel->hw_value);
   1113	else
   1114		lbs_deb_assoc("no channel\n");
   1115
   1116	/* add (empty) CF param TLV */
   1117	pos += lbs_add_cf_param_tlv(pos);
   1118
   1119	/* add rates TLV */
   1120	tmp = pos + 4; /* skip Marvell IE header */
   1121	pos += lbs_add_common_rates_tlv(pos, bss);
   1122	lbs_deb_hex(LBS_DEB_ASSOC, "Common Rates", tmp, pos - tmp);
   1123
   1124	/* add auth type TLV */
   1125	if (MRVL_FW_MAJOR_REV(priv->fwrelease) >= 9)
   1126		pos += lbs_add_auth_type_tlv(pos, sme->auth_type);
   1127
   1128	/* add WPA/WPA2 TLV */
   1129	if (sme->ie && sme->ie_len)
   1130		pos += lbs_add_wpa_tlv(pos, sme->ie, sme->ie_len);
   1131
   1132	len = sizeof(*cmd) + (u16)(pos - (u8 *) &cmd->iebuf);
   1133	cmd->hdr.size = cpu_to_le16(len);
   1134
   1135	lbs_deb_hex(LBS_DEB_ASSOC, "ASSOC_CMD", (u8 *) cmd,
   1136			le16_to_cpu(cmd->hdr.size));
   1137
   1138	/* store for later use */
   1139	memcpy(priv->assoc_bss, bss->bssid, ETH_ALEN);
   1140
   1141	ret = lbs_cmd_with_response(priv, CMD_802_11_ASSOCIATE, cmd);
   1142	if (ret)
   1143		goto done;
   1144
   1145	/* generate connect message to cfg80211 */
   1146
   1147	resp = (void *) cmd; /* recast for easier field access */
   1148	status = le16_to_cpu(resp->statuscode);
   1149
   1150	/* Older FW versions map the IEEE 802.11 Status Code in the association
   1151	 * response to the following values returned in resp->statuscode:
   1152	 *
   1153	 *    IEEE Status Code                Marvell Status Code
   1154	 *    0                       ->      0x0000 ASSOC_RESULT_SUCCESS
   1155	 *    13                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
   1156	 *    14                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
   1157	 *    15                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
   1158	 *    16                      ->      0x0004 ASSOC_RESULT_AUTH_REFUSED
   1159	 *    others                  ->      0x0003 ASSOC_RESULT_REFUSED
   1160	 *
   1161	 * Other response codes:
   1162	 *    0x0001 -> ASSOC_RESULT_INVALID_PARAMETERS (unused)
   1163	 *    0x0002 -> ASSOC_RESULT_TIMEOUT (internal timer expired waiting for
   1164	 *                                    association response from the AP)
   1165	 */
   1166	if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
   1167		switch (status) {
   1168		case 0:
   1169			break;
   1170		case 1:
   1171			lbs_deb_assoc("invalid association parameters\n");
   1172			status = WLAN_STATUS_CAPS_UNSUPPORTED;
   1173			break;
   1174		case 2:
   1175			lbs_deb_assoc("timer expired while waiting for AP\n");
   1176			status = WLAN_STATUS_AUTH_TIMEOUT;
   1177			break;
   1178		case 3:
   1179			lbs_deb_assoc("association refused by AP\n");
   1180			status = WLAN_STATUS_ASSOC_DENIED_UNSPEC;
   1181			break;
   1182		case 4:
   1183			lbs_deb_assoc("authentication refused by AP\n");
   1184			status = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
   1185			break;
   1186		default:
   1187			lbs_deb_assoc("association failure %d\n", status);
   1188			/* v5 OLPC firmware does return the AP status code if
   1189			 * it's not one of the values above.  Let that through.
   1190			 */
   1191			break;
   1192		}
   1193	}
   1194
   1195	lbs_deb_assoc("status %d, statuscode 0x%04x, capability 0x%04x, "
   1196		      "aid 0x%04x\n", status, le16_to_cpu(resp->statuscode),
   1197		      le16_to_cpu(resp->capability), le16_to_cpu(resp->aid));
   1198
   1199	resp_ie_len = le16_to_cpu(resp->hdr.size)
   1200		- sizeof(resp->hdr)
   1201		- 6;
   1202	cfg80211_connect_result(priv->dev,
   1203				priv->assoc_bss,
   1204				sme->ie, sme->ie_len,
   1205				resp->iebuf, resp_ie_len,
   1206				status,
   1207				GFP_KERNEL);
   1208
   1209	if (status == 0) {
   1210		/* TODO: get rid of priv->connect_status */
   1211		priv->connect_status = LBS_CONNECTED;
   1212		netif_carrier_on(priv->dev);
   1213		if (!priv->tx_pending_len)
   1214			netif_tx_wake_all_queues(priv->dev);
   1215	}
   1216
   1217	kfree(cmd);
   1218done:
   1219	return ret;
   1220}
   1221
   1222static struct cfg80211_scan_request *
   1223_new_connect_scan_req(struct wiphy *wiphy, struct cfg80211_connect_params *sme)
   1224{
   1225	struct cfg80211_scan_request *creq = NULL;
   1226	int i, n_channels = ieee80211_get_num_supported_channels(wiphy);
   1227	enum nl80211_band band;
   1228
   1229	creq = kzalloc(sizeof(*creq) + sizeof(struct cfg80211_ssid) +
   1230		       n_channels * sizeof(void *),
   1231		       GFP_ATOMIC);
   1232	if (!creq)
   1233		return NULL;
   1234
   1235	/* SSIDs come after channels */
   1236	creq->ssids = (void *)&creq->channels[n_channels];
   1237	creq->n_channels = n_channels;
   1238	creq->n_ssids = 1;
   1239
   1240	/* Scan all available channels */
   1241	i = 0;
   1242	for (band = 0; band < NUM_NL80211_BANDS; band++) {
   1243		int j;
   1244
   1245		if (!wiphy->bands[band])
   1246			continue;
   1247
   1248		for (j = 0; j < wiphy->bands[band]->n_channels; j++) {
   1249			/* ignore disabled channels */
   1250			if (wiphy->bands[band]->channels[j].flags &
   1251						IEEE80211_CHAN_DISABLED)
   1252				continue;
   1253
   1254			creq->channels[i] = &wiphy->bands[band]->channels[j];
   1255			i++;
   1256		}
   1257	}
   1258	if (i) {
   1259		/* Set real number of channels specified in creq->channels[] */
   1260		creq->n_channels = i;
   1261
   1262		/* Scan for the SSID we're going to connect to */
   1263		memcpy(creq->ssids[0].ssid, sme->ssid, sme->ssid_len);
   1264		creq->ssids[0].ssid_len = sme->ssid_len;
   1265	} else {
   1266		/* No channels found... */
   1267		kfree(creq);
   1268		creq = NULL;
   1269	}
   1270
   1271	return creq;
   1272}
   1273
   1274static int lbs_cfg_connect(struct wiphy *wiphy, struct net_device *dev,
   1275			   struct cfg80211_connect_params *sme)
   1276{
   1277	struct lbs_private *priv = wiphy_priv(wiphy);
   1278	struct cfg80211_bss *bss = NULL;
   1279	int ret = 0;
   1280	u8 preamble = RADIO_PREAMBLE_SHORT;
   1281
   1282	if (dev == priv->mesh_dev)
   1283		return -EOPNOTSUPP;
   1284
   1285	if (!sme->bssid) {
   1286		struct cfg80211_scan_request *creq;
   1287
   1288		/*
   1289		 * Scan for the requested network after waiting for existing
   1290		 * scans to finish.
   1291		 */
   1292		lbs_deb_assoc("assoc: waiting for existing scans\n");
   1293		wait_event_interruptible_timeout(priv->scan_q,
   1294						 (priv->scan_req == NULL),
   1295						 (15 * HZ));
   1296
   1297		creq = _new_connect_scan_req(wiphy, sme);
   1298		if (!creq) {
   1299			ret = -EINVAL;
   1300			goto done;
   1301		}
   1302
   1303		lbs_deb_assoc("assoc: scanning for compatible AP\n");
   1304		_internal_start_scan(priv, true, creq);
   1305
   1306		lbs_deb_assoc("assoc: waiting for scan to complete\n");
   1307		wait_event_interruptible_timeout(priv->scan_q,
   1308						 (priv->scan_req == NULL),
   1309						 (15 * HZ));
   1310		lbs_deb_assoc("assoc: scanning completed\n");
   1311	}
   1312
   1313	/* Find the BSS we want using available scan results */
   1314	bss = cfg80211_get_bss(wiphy, sme->channel, sme->bssid,
   1315		sme->ssid, sme->ssid_len, IEEE80211_BSS_TYPE_ESS,
   1316		IEEE80211_PRIVACY_ANY);
   1317	if (!bss) {
   1318		wiphy_err(wiphy, "assoc: bss %pM not in scan results\n",
   1319			  sme->bssid);
   1320		ret = -ENOENT;
   1321		goto done;
   1322	}
   1323	lbs_deb_assoc("trying %pM\n", bss->bssid);
   1324	lbs_deb_assoc("cipher 0x%x, key index %d, key len %d\n",
   1325		      sme->crypto.cipher_group,
   1326		      sme->key_idx, sme->key_len);
   1327
   1328	/* As this is a new connection, clear locally stored WEP keys */
   1329	priv->wep_tx_key = 0;
   1330	memset(priv->wep_key, 0, sizeof(priv->wep_key));
   1331	memset(priv->wep_key_len, 0, sizeof(priv->wep_key_len));
   1332
   1333	/* set/remove WEP keys */
   1334	switch (sme->crypto.cipher_group) {
   1335	case WLAN_CIPHER_SUITE_WEP40:
   1336	case WLAN_CIPHER_SUITE_WEP104:
   1337		/* Store provided WEP keys in priv-> */
   1338		priv->wep_tx_key = sme->key_idx;
   1339		priv->wep_key_len[sme->key_idx] = sme->key_len;
   1340		memcpy(priv->wep_key[sme->key_idx], sme->key, sme->key_len);
   1341		/* Set WEP keys and WEP mode */
   1342		lbs_set_wep_keys(priv);
   1343		priv->mac_control |= CMD_ACT_MAC_WEP_ENABLE;
   1344		lbs_set_mac_control(priv);
   1345		/* No RSN mode for WEP */
   1346		lbs_enable_rsn(priv, 0);
   1347		break;
   1348	case 0: /* there's no WLAN_CIPHER_SUITE_NONE definition */
   1349		/*
   1350		 * If we don't have no WEP, no WPA and no WPA2,
   1351		 * we remove all keys like in the WPA/WPA2 setup,
   1352		 * we just don't set RSN.
   1353		 *
   1354		 * Therefore: fall-through
   1355		 */
   1356	case WLAN_CIPHER_SUITE_TKIP:
   1357	case WLAN_CIPHER_SUITE_CCMP:
   1358		/* Remove WEP keys and WEP mode */
   1359		lbs_remove_wep_keys(priv);
   1360		priv->mac_control &= ~CMD_ACT_MAC_WEP_ENABLE;
   1361		lbs_set_mac_control(priv);
   1362
   1363		/* clear the WPA/WPA2 keys */
   1364		lbs_set_key_material(priv,
   1365			KEY_TYPE_ID_WEP, /* doesn't matter */
   1366			KEY_INFO_WPA_UNICAST,
   1367			NULL, 0);
   1368		lbs_set_key_material(priv,
   1369			KEY_TYPE_ID_WEP, /* doesn't matter */
   1370			KEY_INFO_WPA_MCAST,
   1371			NULL, 0);
   1372		/* RSN mode for WPA/WPA2 */
   1373		lbs_enable_rsn(priv, sme->crypto.cipher_group != 0);
   1374		break;
   1375	default:
   1376		wiphy_err(wiphy, "unsupported cipher group 0x%x\n",
   1377			  sme->crypto.cipher_group);
   1378		ret = -ENOTSUPP;
   1379		goto done;
   1380	}
   1381
   1382	ret = lbs_set_authtype(priv, sme);
   1383	if (ret == -ENOTSUPP) {
   1384		wiphy_err(wiphy, "unsupported authtype 0x%x\n", sme->auth_type);
   1385		goto done;
   1386	}
   1387
   1388	lbs_set_radio(priv, preamble, 1);
   1389
   1390	/* Do the actual association */
   1391	ret = lbs_associate(priv, bss, sme);
   1392
   1393 done:
   1394	if (bss)
   1395		cfg80211_put_bss(wiphy, bss);
   1396	return ret;
   1397}
   1398
   1399int lbs_disconnect(struct lbs_private *priv, u16 reason)
   1400{
   1401	struct cmd_ds_802_11_deauthenticate cmd;
   1402	int ret;
   1403
   1404	memset(&cmd, 0, sizeof(cmd));
   1405	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
   1406	/* Mildly ugly to use a locally store my own BSSID ... */
   1407	memcpy(cmd.macaddr, &priv->assoc_bss, ETH_ALEN);
   1408	cmd.reasoncode = cpu_to_le16(reason);
   1409
   1410	ret = lbs_cmd_with_response(priv, CMD_802_11_DEAUTHENTICATE, &cmd);
   1411	if (ret)
   1412		return ret;
   1413
   1414	cfg80211_disconnected(priv->dev,
   1415			reason,
   1416			NULL, 0, true,
   1417			GFP_KERNEL);
   1418	priv->connect_status = LBS_DISCONNECTED;
   1419
   1420	return 0;
   1421}
   1422
   1423static int lbs_cfg_disconnect(struct wiphy *wiphy, struct net_device *dev,
   1424	u16 reason_code)
   1425{
   1426	struct lbs_private *priv = wiphy_priv(wiphy);
   1427
   1428	if (dev == priv->mesh_dev)
   1429		return -EOPNOTSUPP;
   1430
   1431	/* store for lbs_cfg_ret_disconnect() */
   1432	priv->disassoc_reason = reason_code;
   1433
   1434	return lbs_disconnect(priv, reason_code);
   1435}
   1436
   1437static int lbs_cfg_set_default_key(struct wiphy *wiphy,
   1438				   struct net_device *netdev,
   1439				   u8 key_index, bool unicast,
   1440				   bool multicast)
   1441{
   1442	struct lbs_private *priv = wiphy_priv(wiphy);
   1443
   1444	if (netdev == priv->mesh_dev)
   1445		return -EOPNOTSUPP;
   1446
   1447	if (key_index != priv->wep_tx_key) {
   1448		lbs_deb_assoc("set_default_key: to %d\n", key_index);
   1449		priv->wep_tx_key = key_index;
   1450		lbs_set_wep_keys(priv);
   1451	}
   1452
   1453	return 0;
   1454}
   1455
   1456
   1457static int lbs_cfg_add_key(struct wiphy *wiphy, struct net_device *netdev,
   1458			   u8 idx, bool pairwise, const u8 *mac_addr,
   1459			   struct key_params *params)
   1460{
   1461	struct lbs_private *priv = wiphy_priv(wiphy);
   1462	u16 key_info;
   1463	u16 key_type;
   1464	int ret = 0;
   1465
   1466	if (netdev == priv->mesh_dev)
   1467		return -EOPNOTSUPP;
   1468
   1469	lbs_deb_assoc("add_key: cipher 0x%x, mac_addr %pM\n",
   1470		      params->cipher, mac_addr);
   1471	lbs_deb_assoc("add_key: key index %d, key len %d\n",
   1472		      idx, params->key_len);
   1473	if (params->key_len)
   1474		lbs_deb_hex(LBS_DEB_CFG80211, "KEY",
   1475			    params->key, params->key_len);
   1476
   1477	lbs_deb_assoc("add_key: seq len %d\n", params->seq_len);
   1478	if (params->seq_len)
   1479		lbs_deb_hex(LBS_DEB_CFG80211, "SEQ",
   1480			    params->seq, params->seq_len);
   1481
   1482	switch (params->cipher) {
   1483	case WLAN_CIPHER_SUITE_WEP40:
   1484	case WLAN_CIPHER_SUITE_WEP104:
   1485		/* actually compare if something has changed ... */
   1486		if ((priv->wep_key_len[idx] != params->key_len) ||
   1487			memcmp(priv->wep_key[idx],
   1488			       params->key, params->key_len) != 0) {
   1489			priv->wep_key_len[idx] = params->key_len;
   1490			memcpy(priv->wep_key[idx],
   1491			       params->key, params->key_len);
   1492			lbs_set_wep_keys(priv);
   1493		}
   1494		break;
   1495	case WLAN_CIPHER_SUITE_TKIP:
   1496	case WLAN_CIPHER_SUITE_CCMP:
   1497		key_info = KEY_INFO_WPA_ENABLED | ((idx == 0)
   1498						   ? KEY_INFO_WPA_UNICAST
   1499						   : KEY_INFO_WPA_MCAST);
   1500		key_type = (params->cipher == WLAN_CIPHER_SUITE_TKIP)
   1501			? KEY_TYPE_ID_TKIP
   1502			: KEY_TYPE_ID_AES;
   1503		lbs_set_key_material(priv,
   1504				     key_type,
   1505				     key_info,
   1506				     params->key, params->key_len);
   1507		break;
   1508	default:
   1509		wiphy_err(wiphy, "unhandled cipher 0x%x\n", params->cipher);
   1510		ret = -ENOTSUPP;
   1511		break;
   1512	}
   1513
   1514	return ret;
   1515}
   1516
   1517
   1518static int lbs_cfg_del_key(struct wiphy *wiphy, struct net_device *netdev,
   1519			   u8 key_index, bool pairwise, const u8 *mac_addr)
   1520{
   1521
   1522	lbs_deb_assoc("del_key: key_idx %d, mac_addr %pM\n",
   1523		      key_index, mac_addr);
   1524
   1525#ifdef TODO
   1526	struct lbs_private *priv = wiphy_priv(wiphy);
   1527	/*
   1528	 * I think can keep this a NO-OP, because:
   1529
   1530	 * - we clear all keys whenever we do lbs_cfg_connect() anyway
   1531	 * - neither "iw" nor "wpa_supplicant" won't call this during
   1532	 *   an ongoing connection
   1533	 * - TODO: but I have to check if this is still true when
   1534	 *   I set the AP to periodic re-keying
   1535	 * - we've not kzallec() something when we've added a key at
   1536	 *   lbs_cfg_connect() or lbs_cfg_add_key().
   1537	 *
   1538	 * This causes lbs_cfg_del_key() only called at disconnect time,
   1539	 * where we'd just waste time deleting a key that is not going
   1540	 * to be used anyway.
   1541	 */
   1542	if (key_index < 3 && priv->wep_key_len[key_index]) {
   1543		priv->wep_key_len[key_index] = 0;
   1544		lbs_set_wep_keys(priv);
   1545	}
   1546#endif
   1547
   1548	return 0;
   1549}
   1550
   1551
   1552/*
   1553 * Get station
   1554 */
   1555
   1556static int lbs_cfg_get_station(struct wiphy *wiphy, struct net_device *dev,
   1557			       const u8 *mac, struct station_info *sinfo)
   1558{
   1559	struct lbs_private *priv = wiphy_priv(wiphy);
   1560	s8 signal, noise;
   1561	int ret;
   1562	size_t i;
   1563
   1564	sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BYTES) |
   1565			 BIT_ULL(NL80211_STA_INFO_TX_PACKETS) |
   1566			 BIT_ULL(NL80211_STA_INFO_RX_BYTES) |
   1567			 BIT_ULL(NL80211_STA_INFO_RX_PACKETS);
   1568	sinfo->tx_bytes = priv->dev->stats.tx_bytes;
   1569	sinfo->tx_packets = priv->dev->stats.tx_packets;
   1570	sinfo->rx_bytes = priv->dev->stats.rx_bytes;
   1571	sinfo->rx_packets = priv->dev->stats.rx_packets;
   1572
   1573	/* Get current RSSI */
   1574	ret = lbs_get_rssi(priv, &signal, &noise);
   1575	if (ret == 0) {
   1576		sinfo->signal = signal;
   1577		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
   1578	}
   1579
   1580	/* Convert priv->cur_rate from hw_value to NL80211 value */
   1581	for (i = 0; i < ARRAY_SIZE(lbs_rates); i++) {
   1582		if (priv->cur_rate == lbs_rates[i].hw_value) {
   1583			sinfo->txrate.legacy = lbs_rates[i].bitrate;
   1584			sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
   1585			break;
   1586		}
   1587	}
   1588
   1589	return 0;
   1590}
   1591
   1592
   1593
   1594
   1595/*
   1596 * Change interface
   1597 */
   1598
   1599static int lbs_change_intf(struct wiphy *wiphy, struct net_device *dev,
   1600	enum nl80211_iftype type,
   1601	       struct vif_params *params)
   1602{
   1603	struct lbs_private *priv = wiphy_priv(wiphy);
   1604	int ret = 0;
   1605
   1606	if (dev == priv->mesh_dev)
   1607		return -EOPNOTSUPP;
   1608
   1609	switch (type) {
   1610	case NL80211_IFTYPE_MONITOR:
   1611	case NL80211_IFTYPE_STATION:
   1612	case NL80211_IFTYPE_ADHOC:
   1613		break;
   1614	default:
   1615		return -EOPNOTSUPP;
   1616	}
   1617
   1618	if (priv->iface_running)
   1619		ret = lbs_set_iface_type(priv, type);
   1620
   1621	if (!ret)
   1622		priv->wdev->iftype = type;
   1623
   1624	return ret;
   1625}
   1626
   1627
   1628
   1629/*
   1630 * IBSS (Ad-Hoc)
   1631 */
   1632
   1633/*
   1634 * The firmware needs the following bits masked out of the beacon-derived
   1635 * capability field when associating/joining to a BSS:
   1636 *  9 (QoS), 11 (APSD), 12 (unused), 14 (unused), 15 (unused)
   1637 */
   1638#define CAPINFO_MASK (~(0xda00))
   1639
   1640
   1641static void lbs_join_post(struct lbs_private *priv,
   1642			  struct cfg80211_ibss_params *params,
   1643			  u8 *bssid, u16 capability)
   1644{
   1645	u8 fake_ie[2 + IEEE80211_MAX_SSID_LEN + /* ssid */
   1646		   2 + 4 +                      /* basic rates */
   1647		   2 + 1 +                      /* DS parameter */
   1648		   2 + 2 +                      /* atim */
   1649		   2 + 8];                      /* extended rates */
   1650	u8 *fake = fake_ie;
   1651	struct cfg80211_bss *bss;
   1652
   1653	/*
   1654	 * For cfg80211_inform_bss, we'll need a fake IE, as we can't get
   1655	 * the real IE from the firmware. So we fabricate a fake IE based on
   1656	 * what the firmware actually sends (sniffed with wireshark).
   1657	 */
   1658	/* Fake SSID IE */
   1659	*fake++ = WLAN_EID_SSID;
   1660	*fake++ = params->ssid_len;
   1661	memcpy(fake, params->ssid, params->ssid_len);
   1662	fake += params->ssid_len;
   1663	/* Fake supported basic rates IE */
   1664	*fake++ = WLAN_EID_SUPP_RATES;
   1665	*fake++ = 4;
   1666	*fake++ = 0x82;
   1667	*fake++ = 0x84;
   1668	*fake++ = 0x8b;
   1669	*fake++ = 0x96;
   1670	/* Fake DS channel IE */
   1671	*fake++ = WLAN_EID_DS_PARAMS;
   1672	*fake++ = 1;
   1673	*fake++ = params->chandef.chan->hw_value;
   1674	/* Fake IBSS params IE */
   1675	*fake++ = WLAN_EID_IBSS_PARAMS;
   1676	*fake++ = 2;
   1677	*fake++ = 0; /* ATIM=0 */
   1678	*fake++ = 0;
   1679	/* Fake extended rates IE, TODO: don't add this for 802.11b only,
   1680	 * but I don't know how this could be checked */
   1681	*fake++ = WLAN_EID_EXT_SUPP_RATES;
   1682	*fake++ = 8;
   1683	*fake++ = 0x0c;
   1684	*fake++ = 0x12;
   1685	*fake++ = 0x18;
   1686	*fake++ = 0x24;
   1687	*fake++ = 0x30;
   1688	*fake++ = 0x48;
   1689	*fake++ = 0x60;
   1690	*fake++ = 0x6c;
   1691	lbs_deb_hex(LBS_DEB_CFG80211, "IE", fake_ie, fake - fake_ie);
   1692
   1693	bss = cfg80211_inform_bss(priv->wdev->wiphy,
   1694				  params->chandef.chan,
   1695				  CFG80211_BSS_FTYPE_UNKNOWN,
   1696				  bssid,
   1697				  0,
   1698				  capability,
   1699				  params->beacon_interval,
   1700				  fake_ie, fake - fake_ie,
   1701				  0, GFP_KERNEL);
   1702	cfg80211_put_bss(priv->wdev->wiphy, bss);
   1703
   1704	cfg80211_ibss_joined(priv->dev, bssid, params->chandef.chan,
   1705			     GFP_KERNEL);
   1706
   1707	/* TODO: consider doing this at MACREG_INT_CODE_LINK_SENSED time */
   1708	priv->connect_status = LBS_CONNECTED;
   1709	netif_carrier_on(priv->dev);
   1710	if (!priv->tx_pending_len)
   1711		netif_wake_queue(priv->dev);
   1712}
   1713
   1714static int lbs_ibss_join_existing(struct lbs_private *priv,
   1715	struct cfg80211_ibss_params *params,
   1716	struct cfg80211_bss *bss)
   1717{
   1718	const u8 *rates_eid;
   1719	struct cmd_ds_802_11_ad_hoc_join cmd;
   1720	u8 preamble = RADIO_PREAMBLE_SHORT;
   1721	int ret = 0;
   1722	int hw, i;
   1723	u8 rates_max;
   1724	u8 *rates;
   1725
   1726	/* TODO: set preamble based on scan result */
   1727	ret = lbs_set_radio(priv, preamble, 1);
   1728	if (ret)
   1729		goto out;
   1730
   1731	/*
   1732	 * Example CMD_802_11_AD_HOC_JOIN command:
   1733	 *
   1734	 * command         2c 00         CMD_802_11_AD_HOC_JOIN
   1735	 * size            65 00
   1736	 * sequence        xx xx
   1737	 * result          00 00
   1738	 * bssid           02 27 27 97 2f 96
   1739	 * ssid            49 42 53 53 00 00 00 00
   1740	 *                 00 00 00 00 00 00 00 00
   1741	 *                 00 00 00 00 00 00 00 00
   1742	 *                 00 00 00 00 00 00 00 00
   1743	 * type            02            CMD_BSS_TYPE_IBSS
   1744	 * beacon period   64 00
   1745	 * dtim period     00
   1746	 * timestamp       00 00 00 00 00 00 00 00
   1747	 * localtime       00 00 00 00 00 00 00 00
   1748	 * IE DS           03
   1749	 * IE DS len       01
   1750	 * IE DS channel   01
   1751	 * reserveed       00 00 00 00
   1752	 * IE IBSS         06
   1753	 * IE IBSS len     02
   1754	 * IE IBSS atim    00 00
   1755	 * reserved        00 00 00 00
   1756	 * capability      02 00
   1757	 * rates           82 84 8b 96 0c 12 18 24 30 48 60 6c 00
   1758	 * fail timeout    ff 00
   1759	 * probe delay     00 00
   1760	 */
   1761	memset(&cmd, 0, sizeof(cmd));
   1762	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
   1763
   1764	memcpy(cmd.bss.bssid, bss->bssid, ETH_ALEN);
   1765	memcpy(cmd.bss.ssid, params->ssid, params->ssid_len);
   1766	cmd.bss.type = CMD_BSS_TYPE_IBSS;
   1767	cmd.bss.beaconperiod = cpu_to_le16(params->beacon_interval);
   1768	cmd.bss.ds.header.id = WLAN_EID_DS_PARAMS;
   1769	cmd.bss.ds.header.len = 1;
   1770	cmd.bss.ds.channel = params->chandef.chan->hw_value;
   1771	cmd.bss.ibss.header.id = WLAN_EID_IBSS_PARAMS;
   1772	cmd.bss.ibss.header.len = 2;
   1773	cmd.bss.ibss.atimwindow = 0;
   1774	cmd.bss.capability = cpu_to_le16(bss->capability & CAPINFO_MASK);
   1775
   1776	/* set rates to the intersection of our rates and the rates in the
   1777	   bss */
   1778	rcu_read_lock();
   1779	rates_eid = ieee80211_bss_get_ie(bss, WLAN_EID_SUPP_RATES);
   1780	if (!rates_eid) {
   1781		lbs_add_rates(cmd.bss.rates);
   1782	} else {
   1783		rates_max = rates_eid[1];
   1784		if (rates_max > MAX_RATES) {
   1785			lbs_deb_join("invalid rates");
   1786			rcu_read_unlock();
   1787			ret = -EINVAL;
   1788			goto out;
   1789		}
   1790		rates = cmd.bss.rates;
   1791		for (hw = 0; hw < ARRAY_SIZE(lbs_rates); hw++) {
   1792			u8 hw_rate = lbs_rates[hw].bitrate / 5;
   1793			for (i = 0; i < rates_max; i++) {
   1794				if (hw_rate == (rates_eid[i+2] & 0x7f)) {
   1795					u8 rate = rates_eid[i+2];
   1796					if (rate == 0x02 || rate == 0x04 ||
   1797					    rate == 0x0b || rate == 0x16)
   1798						rate |= 0x80;
   1799					*rates++ = rate;
   1800				}
   1801			}
   1802		}
   1803	}
   1804	rcu_read_unlock();
   1805
   1806	/* Only v8 and below support setting this */
   1807	if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8) {
   1808		cmd.failtimeout = cpu_to_le16(MRVDRV_ASSOCIATION_TIME_OUT);
   1809		cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
   1810	}
   1811	ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_JOIN, &cmd);
   1812	if (ret)
   1813		goto out;
   1814
   1815	/*
   1816	 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
   1817	 *
   1818	 * response        2c 80
   1819	 * size            09 00
   1820	 * sequence        xx xx
   1821	 * result          00 00
   1822	 * reserved        00
   1823	 */
   1824	lbs_join_post(priv, params, bss->bssid, bss->capability);
   1825
   1826 out:
   1827	return ret;
   1828}
   1829
   1830
   1831
   1832static int lbs_ibss_start_new(struct lbs_private *priv,
   1833	struct cfg80211_ibss_params *params)
   1834{
   1835	struct cmd_ds_802_11_ad_hoc_start cmd;
   1836	struct cmd_ds_802_11_ad_hoc_result *resp =
   1837		(struct cmd_ds_802_11_ad_hoc_result *) &cmd;
   1838	u8 preamble = RADIO_PREAMBLE_SHORT;
   1839	int ret = 0;
   1840	u16 capability;
   1841
   1842	ret = lbs_set_radio(priv, preamble, 1);
   1843	if (ret)
   1844		goto out;
   1845
   1846	/*
   1847	 * Example CMD_802_11_AD_HOC_START command:
   1848	 *
   1849	 * command         2b 00         CMD_802_11_AD_HOC_START
   1850	 * size            b1 00
   1851	 * sequence        xx xx
   1852	 * result          00 00
   1853	 * ssid            54 45 53 54 00 00 00 00
   1854	 *                 00 00 00 00 00 00 00 00
   1855	 *                 00 00 00 00 00 00 00 00
   1856	 *                 00 00 00 00 00 00 00 00
   1857	 * bss type        02
   1858	 * beacon period   64 00
   1859	 * dtim period     00
   1860	 * IE IBSS         06
   1861	 * IE IBSS len     02
   1862	 * IE IBSS atim    00 00
   1863	 * reserved        00 00 00 00
   1864	 * IE DS           03
   1865	 * IE DS len       01
   1866	 * IE DS channel   01
   1867	 * reserved        00 00 00 00
   1868	 * probe delay     00 00
   1869	 * capability      02 00
   1870	 * rates           82 84 8b 96   (basic rates with have bit 7 set)
   1871	 *                 0c 12 18 24 30 48 60 6c
   1872	 * padding         100 bytes
   1873	 */
   1874	memset(&cmd, 0, sizeof(cmd));
   1875	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
   1876	memcpy(cmd.ssid, params->ssid, params->ssid_len);
   1877	cmd.bsstype = CMD_BSS_TYPE_IBSS;
   1878	cmd.beaconperiod = cpu_to_le16(params->beacon_interval);
   1879	cmd.ibss.header.id = WLAN_EID_IBSS_PARAMS;
   1880	cmd.ibss.header.len = 2;
   1881	cmd.ibss.atimwindow = 0;
   1882	cmd.ds.header.id = WLAN_EID_DS_PARAMS;
   1883	cmd.ds.header.len = 1;
   1884	cmd.ds.channel = params->chandef.chan->hw_value;
   1885	/* Only v8 and below support setting probe delay */
   1886	if (MRVL_FW_MAJOR_REV(priv->fwrelease) <= 8)
   1887		cmd.probedelay = cpu_to_le16(CMD_SCAN_PROBE_DELAY_TIME);
   1888	/* TODO: mix in WLAN_CAPABILITY_PRIVACY */
   1889	capability = WLAN_CAPABILITY_IBSS;
   1890	cmd.capability = cpu_to_le16(capability);
   1891	lbs_add_rates(cmd.rates);
   1892
   1893
   1894	ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_START, &cmd);
   1895	if (ret)
   1896		goto out;
   1897
   1898	/*
   1899	 * This is a sample response to CMD_802_11_AD_HOC_JOIN:
   1900	 *
   1901	 * response        2b 80
   1902	 * size            14 00
   1903	 * sequence        xx xx
   1904	 * result          00 00
   1905	 * reserved        00
   1906	 * bssid           02 2b 7b 0f 86 0e
   1907	 */
   1908	lbs_join_post(priv, params, resp->bssid, capability);
   1909
   1910 out:
   1911	return ret;
   1912}
   1913
   1914
   1915static int lbs_join_ibss(struct wiphy *wiphy, struct net_device *dev,
   1916		struct cfg80211_ibss_params *params)
   1917{
   1918	struct lbs_private *priv = wiphy_priv(wiphy);
   1919	int ret = 0;
   1920	struct cfg80211_bss *bss;
   1921
   1922	if (dev == priv->mesh_dev)
   1923		return -EOPNOTSUPP;
   1924
   1925	if (!params->chandef.chan) {
   1926		ret = -ENOTSUPP;
   1927		goto out;
   1928	}
   1929
   1930	ret = lbs_set_channel(priv, params->chandef.chan->hw_value);
   1931	if (ret)
   1932		goto out;
   1933
   1934	/* Search if someone is beaconing. This assumes that the
   1935	 * bss list is populated already */
   1936	bss = cfg80211_get_bss(wiphy, params->chandef.chan, params->bssid,
   1937		params->ssid, params->ssid_len,
   1938		IEEE80211_BSS_TYPE_IBSS, IEEE80211_PRIVACY_ANY);
   1939
   1940	if (bss) {
   1941		ret = lbs_ibss_join_existing(priv, params, bss);
   1942		cfg80211_put_bss(wiphy, bss);
   1943	} else
   1944		ret = lbs_ibss_start_new(priv, params);
   1945
   1946
   1947 out:
   1948	return ret;
   1949}
   1950
   1951
   1952static int lbs_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
   1953{
   1954	struct lbs_private *priv = wiphy_priv(wiphy);
   1955	struct cmd_ds_802_11_ad_hoc_stop cmd;
   1956	int ret = 0;
   1957
   1958	if (dev == priv->mesh_dev)
   1959		return -EOPNOTSUPP;
   1960
   1961	memset(&cmd, 0, sizeof(cmd));
   1962	cmd.hdr.size = cpu_to_le16(sizeof(cmd));
   1963	ret = lbs_cmd_with_response(priv, CMD_802_11_AD_HOC_STOP, &cmd);
   1964
   1965	/* TODO: consider doing this at MACREG_INT_CODE_ADHOC_BCN_LOST time */
   1966	lbs_mac_event_disconnected(priv, true);
   1967
   1968	return ret;
   1969}
   1970
   1971
   1972
   1973static int lbs_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
   1974			      bool enabled, int timeout)
   1975{
   1976	struct lbs_private *priv = wiphy_priv(wiphy);
   1977
   1978	if  (!(priv->fwcapinfo & FW_CAPINFO_PS)) {
   1979		if (!enabled)
   1980			return 0;
   1981		else
   1982			return -EINVAL;
   1983	}
   1984	/* firmware does not work well with too long latency with power saving
   1985	 * enabled, so do not enable it if there is only polling, no
   1986	 * interrupts (like in some sdio hosts which can only
   1987	 * poll for sdio irqs)
   1988	 */
   1989	if  (priv->is_polling) {
   1990		if (!enabled)
   1991			return 0;
   1992		else
   1993			return -EINVAL;
   1994	}
   1995	if (!enabled) {
   1996		priv->psmode = LBS802_11POWERMODECAM;
   1997		if (priv->psstate != PS_STATE_FULL_POWER)
   1998			lbs_set_ps_mode(priv,
   1999					PS_MODE_ACTION_EXIT_PS,
   2000					true);
   2001		return 0;
   2002	}
   2003	if (priv->psmode != LBS802_11POWERMODECAM)
   2004		return 0;
   2005	priv->psmode = LBS802_11POWERMODEMAX_PSP;
   2006	if (priv->connect_status == LBS_CONNECTED)
   2007		lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS, true);
   2008	return 0;
   2009}
   2010
   2011/*
   2012 * Initialization
   2013 */
   2014
   2015static const struct cfg80211_ops lbs_cfg80211_ops = {
   2016	.set_monitor_channel = lbs_cfg_set_monitor_channel,
   2017	.libertas_set_mesh_channel = lbs_cfg_set_mesh_channel,
   2018	.scan = lbs_cfg_scan,
   2019	.connect = lbs_cfg_connect,
   2020	.disconnect = lbs_cfg_disconnect,
   2021	.add_key = lbs_cfg_add_key,
   2022	.del_key = lbs_cfg_del_key,
   2023	.set_default_key = lbs_cfg_set_default_key,
   2024	.get_station = lbs_cfg_get_station,
   2025	.change_virtual_intf = lbs_change_intf,
   2026	.join_ibss = lbs_join_ibss,
   2027	.leave_ibss = lbs_leave_ibss,
   2028	.set_power_mgmt = lbs_set_power_mgmt,
   2029};
   2030
   2031
   2032/*
   2033 * At this time lbs_private *priv doesn't even exist, so we just allocate
   2034 * memory and don't initialize the wiphy further. This is postponed until we
   2035 * can talk to the firmware and happens at registration time in
   2036 * lbs_cfg_wiphy_register().
   2037 */
   2038struct wireless_dev *lbs_cfg_alloc(struct device *dev)
   2039{
   2040	int ret = 0;
   2041	struct wireless_dev *wdev;
   2042
   2043	wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
   2044	if (!wdev)
   2045		return ERR_PTR(-ENOMEM);
   2046
   2047	wdev->wiphy = wiphy_new(&lbs_cfg80211_ops, sizeof(struct lbs_private));
   2048	if (!wdev->wiphy) {
   2049		dev_err(dev, "cannot allocate wiphy\n");
   2050		ret = -ENOMEM;
   2051		goto err_wiphy_new;
   2052	}
   2053
   2054	return wdev;
   2055
   2056 err_wiphy_new:
   2057	kfree(wdev);
   2058	return ERR_PTR(ret);
   2059}
   2060
   2061
   2062static void lbs_cfg_set_regulatory_hint(struct lbs_private *priv)
   2063{
   2064	struct region_code_mapping {
   2065		const char *cn;
   2066		int code;
   2067	};
   2068
   2069	/* Section 5.17.2 */
   2070	static const struct region_code_mapping regmap[] = {
   2071		{"US ", 0x10}, /* US FCC */
   2072		{"CA ", 0x20}, /* Canada */
   2073		{"EU ", 0x30}, /* ETSI   */
   2074		{"ES ", 0x31}, /* Spain  */
   2075		{"FR ", 0x32}, /* France */
   2076		{"JP ", 0x40}, /* Japan  */
   2077	};
   2078	size_t i;
   2079
   2080	for (i = 0; i < ARRAY_SIZE(regmap); i++)
   2081		if (regmap[i].code == priv->regioncode) {
   2082			regulatory_hint(priv->wdev->wiphy, regmap[i].cn);
   2083			break;
   2084		}
   2085}
   2086
   2087static void lbs_reg_notifier(struct wiphy *wiphy,
   2088			     struct regulatory_request *request)
   2089{
   2090	struct lbs_private *priv = wiphy_priv(wiphy);
   2091
   2092	memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));
   2093	if (lbs_iface_active(priv))
   2094		lbs_set_11d_domain_info(priv);
   2095}
   2096
   2097/*
   2098 * This function get's called after lbs_setup_firmware() determined the
   2099 * firmware capabities. So we can setup the wiphy according to our
   2100 * hardware/firmware.
   2101 */
   2102int lbs_cfg_register(struct lbs_private *priv)
   2103{
   2104	struct wireless_dev *wdev = priv->wdev;
   2105	int ret;
   2106
   2107	wdev->wiphy->max_scan_ssids = 1;
   2108	wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
   2109
   2110	wdev->wiphy->interface_modes =
   2111			BIT(NL80211_IFTYPE_STATION) |
   2112			BIT(NL80211_IFTYPE_ADHOC);
   2113	if (lbs_rtap_supported(priv))
   2114		wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MONITOR);
   2115	if (lbs_mesh_activated(priv))
   2116		wdev->wiphy->interface_modes |= BIT(NL80211_IFTYPE_MESH_POINT);
   2117
   2118	wdev->wiphy->bands[NL80211_BAND_2GHZ] = &lbs_band_2ghz;
   2119
   2120	/*
   2121	 * We could check priv->fwcapinfo && FW_CAPINFO_WPA, but I have
   2122	 * never seen a firmware without WPA
   2123	 */
   2124	wdev->wiphy->cipher_suites = cipher_suites;
   2125	wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
   2126	wdev->wiphy->reg_notifier = lbs_reg_notifier;
   2127
   2128	ret = wiphy_register(wdev->wiphy);
   2129	if (ret < 0)
   2130		pr_err("cannot register wiphy device\n");
   2131
   2132	priv->wiphy_registered = true;
   2133
   2134	ret = register_netdev(priv->dev);
   2135	if (ret)
   2136		pr_err("cannot register network device\n");
   2137
   2138	INIT_DELAYED_WORK(&priv->scan_work, lbs_scan_worker);
   2139
   2140	lbs_cfg_set_regulatory_hint(priv);
   2141
   2142	return ret;
   2143}
   2144
   2145void lbs_scan_deinit(struct lbs_private *priv)
   2146{
   2147	cancel_delayed_work_sync(&priv->scan_work);
   2148}
   2149
   2150
   2151void lbs_cfg_free(struct lbs_private *priv)
   2152{
   2153	struct wireless_dev *wdev = priv->wdev;
   2154
   2155	if (!wdev)
   2156		return;
   2157
   2158	if (priv->wiphy_registered)
   2159		wiphy_unregister(wdev->wiphy);
   2160
   2161	if (wdev->wiphy)
   2162		wiphy_free(wdev->wiphy);
   2163
   2164	kfree(wdev);
   2165}