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[karo-tx-linux.git] / drivers / net / wireless / marvell / mwifiex / join.c
1 /*
2  * Marvell Wireless LAN device driver: association and ad-hoc start/join
3  *
4  * Copyright (C) 2011-2014, Marvell International Ltd.
5  *
6  * This software file (the "File") is distributed by Marvell International
7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8  * (the "License").  You may use, redistribute and/or modify this File in
9  * accordance with the terms and conditions of the License, a copy of which
10  * is available by writing to the Free Software Foundation, Inc.,
11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13  *
14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
17  * this warranty disclaimer.
18  */
19
20 #include "decl.h"
21 #include "ioctl.h"
22 #include "util.h"
23 #include "fw.h"
24 #include "main.h"
25 #include "wmm.h"
26 #include "11n.h"
27 #include "11ac.h"
28
29 #define CAPINFO_MASK    (~(BIT(15) | BIT(14) | BIT(12) | BIT(11) | BIT(9)))
30
31 /*
32  * Append a generic IE as a pass through TLV to a TLV buffer.
33  *
34  * This function is called from the network join command preparation routine.
35  *
36  * If the IE buffer has been setup by the application, this routine appends
37  * the buffer as a pass through TLV type to the request.
38  */
39 static int
40 mwifiex_cmd_append_generic_ie(struct mwifiex_private *priv, u8 **buffer)
41 {
42         int ret_len = 0;
43         struct mwifiex_ie_types_header ie_header;
44
45         /* Null Checks */
46         if (!buffer)
47                 return 0;
48         if (!(*buffer))
49                 return 0;
50
51         /*
52          * If there is a generic ie buffer setup, append it to the return
53          *   parameter buffer pointer.
54          */
55         if (priv->gen_ie_buf_len) {
56                 mwifiex_dbg(priv->adapter, INFO,
57                             "info: %s: append generic ie len %d to %p\n",
58                             __func__, priv->gen_ie_buf_len, *buffer);
59
60                 /* Wrap the generic IE buffer with a pass through TLV type */
61                 ie_header.type = cpu_to_le16(TLV_TYPE_PASSTHROUGH);
62                 ie_header.len = cpu_to_le16(priv->gen_ie_buf_len);
63                 memcpy(*buffer, &ie_header, sizeof(ie_header));
64
65                 /* Increment the return size and the return buffer pointer
66                    param */
67                 *buffer += sizeof(ie_header);
68                 ret_len += sizeof(ie_header);
69
70                 /* Copy the generic IE buffer to the output buffer, advance
71                    pointer */
72                 memcpy(*buffer, priv->gen_ie_buf, priv->gen_ie_buf_len);
73
74                 /* Increment the return size and the return buffer pointer
75                    param */
76                 *buffer += priv->gen_ie_buf_len;
77                 ret_len += priv->gen_ie_buf_len;
78
79                 /* Reset the generic IE buffer */
80                 priv->gen_ie_buf_len = 0;
81         }
82
83         /* return the length appended to the buffer */
84         return ret_len;
85 }
86
87 /*
88  * Append TSF tracking info from the scan table for the target AP.
89  *
90  * This function is called from the network join command preparation routine.
91  *
92  * The TSF table TSF sent to the firmware contains two TSF values:
93  *      - The TSF of the target AP from its previous beacon/probe response
94  *      - The TSF timestamp of our local MAC at the time we observed the
95  *        beacon/probe response.
96  *
97  * The firmware uses the timestamp values to set an initial TSF value
98  * in the MAC for the new association after a reassociation attempt.
99  */
100 static int
101 mwifiex_cmd_append_tsf_tlv(struct mwifiex_private *priv, u8 **buffer,
102                            struct mwifiex_bssdescriptor *bss_desc)
103 {
104         struct mwifiex_ie_types_tsf_timestamp tsf_tlv;
105         __le64 tsf_val;
106
107         /* Null Checks */
108         if (buffer == NULL)
109                 return 0;
110         if (*buffer == NULL)
111                 return 0;
112
113         memset(&tsf_tlv, 0x00, sizeof(struct mwifiex_ie_types_tsf_timestamp));
114
115         tsf_tlv.header.type = cpu_to_le16(TLV_TYPE_TSFTIMESTAMP);
116         tsf_tlv.header.len = cpu_to_le16(2 * sizeof(tsf_val));
117
118         memcpy(*buffer, &tsf_tlv, sizeof(tsf_tlv.header));
119         *buffer += sizeof(tsf_tlv.header);
120
121         /* TSF at the time when beacon/probe_response was received */
122         tsf_val = cpu_to_le64(bss_desc->fw_tsf);
123         memcpy(*buffer, &tsf_val, sizeof(tsf_val));
124         *buffer += sizeof(tsf_val);
125
126         tsf_val = cpu_to_le64(bss_desc->timestamp);
127
128         mwifiex_dbg(priv->adapter, INFO,
129                     "info: %s: TSF offset calc: %016llx - %016llx\n",
130                     __func__, bss_desc->timestamp, bss_desc->fw_tsf);
131
132         memcpy(*buffer, &tsf_val, sizeof(tsf_val));
133         *buffer += sizeof(tsf_val);
134
135         return sizeof(tsf_tlv.header) + (2 * sizeof(tsf_val));
136 }
137
138 /*
139  * This function finds out the common rates between rate1 and rate2.
140  *
141  * It will fill common rates in rate1 as output if found.
142  *
143  * NOTE: Setting the MSB of the basic rates needs to be taken
144  * care of, either before or after calling this function.
145  */
146 static int mwifiex_get_common_rates(struct mwifiex_private *priv, u8 *rate1,
147                                     u32 rate1_size, u8 *rate2, u32 rate2_size)
148 {
149         int ret;
150         u8 *ptr = rate1, *tmp;
151         u32 i, j;
152
153         tmp = kmemdup(rate1, rate1_size, GFP_KERNEL);
154         if (!tmp) {
155                 mwifiex_dbg(priv->adapter, ERROR, "failed to alloc tmp buf\n");
156                 return -ENOMEM;
157         }
158
159         memset(rate1, 0, rate1_size);
160
161         for (i = 0; i < rate2_size && rate2[i]; i++) {
162                 for (j = 0; j < rate1_size && tmp[j]; j++) {
163                         /* Check common rate, excluding the bit for
164                            basic rate */
165                         if ((rate2[i] & 0x7F) == (tmp[j] & 0x7F)) {
166                                 *rate1++ = tmp[j];
167                                 break;
168                         }
169                 }
170         }
171
172         mwifiex_dbg(priv->adapter, INFO, "info: Tx data rate set to %#x\n",
173                     priv->data_rate);
174
175         if (!priv->is_data_rate_auto) {
176                 while (*ptr) {
177                         if ((*ptr & 0x7f) == priv->data_rate) {
178                                 ret = 0;
179                                 goto done;
180                         }
181                         ptr++;
182                 }
183                 mwifiex_dbg(priv->adapter, ERROR,
184                             "previously set fixed data rate %#x\t"
185                             "is not compatible with the network\n",
186                             priv->data_rate);
187
188                 ret = -1;
189                 goto done;
190         }
191
192         ret = 0;
193 done:
194         kfree(tmp);
195         return ret;
196 }
197
198 /*
199  * This function creates the intersection of the rates supported by a
200  * target BSS and our adapter settings for use in an assoc/join command.
201  */
202 static int
203 mwifiex_setup_rates_from_bssdesc(struct mwifiex_private *priv,
204                                  struct mwifiex_bssdescriptor *bss_desc,
205                                  u8 *out_rates, u32 *out_rates_size)
206 {
207         u8 card_rates[MWIFIEX_SUPPORTED_RATES];
208         u32 card_rates_size;
209
210         /* Copy AP supported rates */
211         memcpy(out_rates, bss_desc->supported_rates, MWIFIEX_SUPPORTED_RATES);
212         /* Get the STA supported rates */
213         card_rates_size = mwifiex_get_active_data_rates(priv, card_rates);
214         /* Get the common rates between AP and STA supported rates */
215         if (mwifiex_get_common_rates(priv, out_rates, MWIFIEX_SUPPORTED_RATES,
216                                      card_rates, card_rates_size)) {
217                 *out_rates_size = 0;
218                 mwifiex_dbg(priv->adapter, ERROR,
219                             "%s: cannot get common rates\n",
220                             __func__);
221                 return -1;
222         }
223
224         *out_rates_size =
225                 min_t(size_t, strlen(out_rates), MWIFIEX_SUPPORTED_RATES);
226
227         return 0;
228 }
229
230 /*
231  * This function appends a WPS IE. It is called from the network join command
232  * preparation routine.
233  *
234  * If the IE buffer has been setup by the application, this routine appends
235  * the buffer as a WPS TLV type to the request.
236  */
237 static int
238 mwifiex_cmd_append_wps_ie(struct mwifiex_private *priv, u8 **buffer)
239 {
240         int retLen = 0;
241         struct mwifiex_ie_types_header ie_header;
242
243         if (!buffer || !*buffer)
244                 return 0;
245
246         /*
247          * If there is a wps ie buffer setup, append it to the return
248          * parameter buffer pointer.
249          */
250         if (priv->wps_ie_len) {
251                 mwifiex_dbg(priv->adapter, CMD,
252                             "cmd: append wps ie %d to %p\n",
253                             priv->wps_ie_len, *buffer);
254
255                 /* Wrap the generic IE buffer with a pass through TLV type */
256                 ie_header.type = cpu_to_le16(TLV_TYPE_MGMT_IE);
257                 ie_header.len = cpu_to_le16(priv->wps_ie_len);
258                 memcpy(*buffer, &ie_header, sizeof(ie_header));
259                 *buffer += sizeof(ie_header);
260                 retLen += sizeof(ie_header);
261
262                 memcpy(*buffer, priv->wps_ie, priv->wps_ie_len);
263                 *buffer += priv->wps_ie_len;
264                 retLen += priv->wps_ie_len;
265
266         }
267
268         kfree(priv->wps_ie);
269         priv->wps_ie_len = 0;
270         return retLen;
271 }
272
273 /*
274  * This function appends a WAPI IE.
275  *
276  * This function is called from the network join command preparation routine.
277  *
278  * If the IE buffer has been setup by the application, this routine appends
279  * the buffer as a WAPI TLV type to the request.
280  */
281 static int
282 mwifiex_cmd_append_wapi_ie(struct mwifiex_private *priv, u8 **buffer)
283 {
284         int retLen = 0;
285         struct mwifiex_ie_types_header ie_header;
286
287         /* Null Checks */
288         if (buffer == NULL)
289                 return 0;
290         if (*buffer == NULL)
291                 return 0;
292
293         /*
294          * If there is a wapi ie buffer setup, append it to the return
295          *   parameter buffer pointer.
296          */
297         if (priv->wapi_ie_len) {
298                 mwifiex_dbg(priv->adapter, CMD,
299                             "cmd: append wapi ie %d to %p\n",
300                             priv->wapi_ie_len, *buffer);
301
302                 /* Wrap the generic IE buffer with a pass through TLV type */
303                 ie_header.type = cpu_to_le16(TLV_TYPE_WAPI_IE);
304                 ie_header.len = cpu_to_le16(priv->wapi_ie_len);
305                 memcpy(*buffer, &ie_header, sizeof(ie_header));
306
307                 /* Increment the return size and the return buffer pointer
308                    param */
309                 *buffer += sizeof(ie_header);
310                 retLen += sizeof(ie_header);
311
312                 /* Copy the wapi IE buffer to the output buffer, advance
313                    pointer */
314                 memcpy(*buffer, priv->wapi_ie, priv->wapi_ie_len);
315
316                 /* Increment the return size and the return buffer pointer
317                    param */
318                 *buffer += priv->wapi_ie_len;
319                 retLen += priv->wapi_ie_len;
320
321         }
322         /* return the length appended to the buffer */
323         return retLen;
324 }
325
326 /*
327  * This function appends rsn ie tlv for wpa/wpa2 security modes.
328  * It is called from the network join command preparation routine.
329  */
330 static int mwifiex_append_rsn_ie_wpa_wpa2(struct mwifiex_private *priv,
331                                           u8 **buffer)
332 {
333         struct mwifiex_ie_types_rsn_param_set *rsn_ie_tlv;
334         int rsn_ie_len;
335
336         if (!buffer || !(*buffer))
337                 return 0;
338
339         rsn_ie_tlv = (struct mwifiex_ie_types_rsn_param_set *) (*buffer);
340         rsn_ie_tlv->header.type = cpu_to_le16((u16) priv->wpa_ie[0]);
341         rsn_ie_tlv->header.type = cpu_to_le16(
342                                  le16_to_cpu(rsn_ie_tlv->header.type) & 0x00FF);
343         rsn_ie_tlv->header.len = cpu_to_le16((u16) priv->wpa_ie[1]);
344         rsn_ie_tlv->header.len = cpu_to_le16(le16_to_cpu(rsn_ie_tlv->header.len)
345                                                          & 0x00FF);
346         if (le16_to_cpu(rsn_ie_tlv->header.len) <= (sizeof(priv->wpa_ie) - 2))
347                 memcpy(rsn_ie_tlv->rsn_ie, &priv->wpa_ie[2],
348                        le16_to_cpu(rsn_ie_tlv->header.len));
349         else
350                 return -1;
351
352         rsn_ie_len = sizeof(rsn_ie_tlv->header) +
353                                         le16_to_cpu(rsn_ie_tlv->header.len);
354         *buffer += rsn_ie_len;
355
356         return rsn_ie_len;
357 }
358
359 /*
360  * This function prepares command for association.
361  *
362  * This sets the following parameters -
363  *      - Peer MAC address
364  *      - Listen interval
365  *      - Beacon interval
366  *      - Capability information
367  *
368  * ...and the following TLVs, as required -
369  *      - SSID TLV
370  *      - PHY TLV
371  *      - SS TLV
372  *      - Rates TLV
373  *      - Authentication TLV
374  *      - Channel TLV
375  *      - WPA/WPA2 IE
376  *      - 11n TLV
377  *      - Vendor specific TLV
378  *      - WMM TLV
379  *      - WAPI IE
380  *      - Generic IE
381  *      - TSF TLV
382  *
383  * Preparation also includes -
384  *      - Setting command ID and proper size
385  *      - Ensuring correct endian-ness
386  */
387 int mwifiex_cmd_802_11_associate(struct mwifiex_private *priv,
388                                  struct host_cmd_ds_command *cmd,
389                                  struct mwifiex_bssdescriptor *bss_desc)
390 {
391         struct host_cmd_ds_802_11_associate *assoc = &cmd->params.associate;
392         struct mwifiex_ie_types_ssid_param_set *ssid_tlv;
393         struct mwifiex_ie_types_phy_param_set *phy_tlv;
394         struct mwifiex_ie_types_ss_param_set *ss_tlv;
395         struct mwifiex_ie_types_rates_param_set *rates_tlv;
396         struct mwifiex_ie_types_auth_type *auth_tlv;
397         struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
398         u8 rates[MWIFIEX_SUPPORTED_RATES];
399         u32 rates_size;
400         u16 tmp_cap;
401         u8 *pos;
402         int rsn_ie_len = 0;
403
404         pos = (u8 *) assoc;
405
406         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_ASSOCIATE);
407
408         /* Save so we know which BSS Desc to use in the response handler */
409         priv->attempted_bss_desc = bss_desc;
410
411         memcpy(assoc->peer_sta_addr,
412                bss_desc->mac_address, sizeof(assoc->peer_sta_addr));
413         pos += sizeof(assoc->peer_sta_addr);
414
415         /* Set the listen interval */
416         assoc->listen_interval = cpu_to_le16(priv->listen_interval);
417         /* Set the beacon period */
418         assoc->beacon_period = cpu_to_le16(bss_desc->beacon_period);
419
420         pos += sizeof(assoc->cap_info_bitmap);
421         pos += sizeof(assoc->listen_interval);
422         pos += sizeof(assoc->beacon_period);
423         pos += sizeof(assoc->dtim_period);
424
425         ssid_tlv = (struct mwifiex_ie_types_ssid_param_set *) pos;
426         ssid_tlv->header.type = cpu_to_le16(WLAN_EID_SSID);
427         ssid_tlv->header.len = cpu_to_le16((u16) bss_desc->ssid.ssid_len);
428         memcpy(ssid_tlv->ssid, bss_desc->ssid.ssid,
429                le16_to_cpu(ssid_tlv->header.len));
430         pos += sizeof(ssid_tlv->header) + le16_to_cpu(ssid_tlv->header.len);
431
432         phy_tlv = (struct mwifiex_ie_types_phy_param_set *) pos;
433         phy_tlv->header.type = cpu_to_le16(WLAN_EID_DS_PARAMS);
434         phy_tlv->header.len = cpu_to_le16(sizeof(phy_tlv->fh_ds.ds_param_set));
435         memcpy(&phy_tlv->fh_ds.ds_param_set,
436                &bss_desc->phy_param_set.ds_param_set.current_chan,
437                sizeof(phy_tlv->fh_ds.ds_param_set));
438         pos += sizeof(phy_tlv->header) + le16_to_cpu(phy_tlv->header.len);
439
440         ss_tlv = (struct mwifiex_ie_types_ss_param_set *) pos;
441         ss_tlv->header.type = cpu_to_le16(WLAN_EID_CF_PARAMS);
442         ss_tlv->header.len = cpu_to_le16(sizeof(ss_tlv->cf_ibss.cf_param_set));
443         pos += sizeof(ss_tlv->header) + le16_to_cpu(ss_tlv->header.len);
444
445         /* Get the common rates supported between the driver and the BSS Desc */
446         if (mwifiex_setup_rates_from_bssdesc
447             (priv, bss_desc, rates, &rates_size))
448                 return -1;
449
450         /* Save the data rates into Current BSS state structure */
451         priv->curr_bss_params.num_of_rates = rates_size;
452         memcpy(&priv->curr_bss_params.data_rates, rates, rates_size);
453
454         /* Setup the Rates TLV in the association command */
455         rates_tlv = (struct mwifiex_ie_types_rates_param_set *) pos;
456         rates_tlv->header.type = cpu_to_le16(WLAN_EID_SUPP_RATES);
457         rates_tlv->header.len = cpu_to_le16((u16) rates_size);
458         memcpy(rates_tlv->rates, rates, rates_size);
459         pos += sizeof(rates_tlv->header) + rates_size;
460         mwifiex_dbg(priv->adapter, INFO, "info: ASSOC_CMD: rates size = %d\n",
461                     rates_size);
462
463         /* Add the Authentication type to be used for Auth frames */
464         auth_tlv = (struct mwifiex_ie_types_auth_type *) pos;
465         auth_tlv->header.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
466         auth_tlv->header.len = cpu_to_le16(sizeof(auth_tlv->auth_type));
467         if (priv->sec_info.wep_enabled)
468                 auth_tlv->auth_type = cpu_to_le16(
469                                 (u16) priv->sec_info.authentication_mode);
470         else
471                 auth_tlv->auth_type = cpu_to_le16(NL80211_AUTHTYPE_OPEN_SYSTEM);
472
473         pos += sizeof(auth_tlv->header) + le16_to_cpu(auth_tlv->header.len);
474
475         if (IS_SUPPORT_MULTI_BANDS(priv->adapter) &&
476             !(ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
477             (!bss_desc->disable_11n) &&
478             (priv->adapter->config_bands & BAND_GN ||
479              priv->adapter->config_bands & BAND_AN) &&
480             (bss_desc->bcn_ht_cap)
481             )
482                 ) {
483                 /* Append a channel TLV for the channel the attempted AP was
484                    found on */
485                 chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
486                 chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
487                 chan_tlv->header.len =
488                         cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
489
490                 memset(chan_tlv->chan_scan_param, 0x00,
491                        sizeof(struct mwifiex_chan_scan_param_set));
492                 chan_tlv->chan_scan_param[0].chan_number =
493                         (bss_desc->phy_param_set.ds_param_set.current_chan);
494                 mwifiex_dbg(priv->adapter, INFO, "info: Assoc: TLV Chan = %d\n",
495                             chan_tlv->chan_scan_param[0].chan_number);
496
497                 chan_tlv->chan_scan_param[0].radio_type =
498                         mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
499
500                 mwifiex_dbg(priv->adapter, INFO, "info: Assoc: TLV Band = %d\n",
501                             chan_tlv->chan_scan_param[0].radio_type);
502                 pos += sizeof(chan_tlv->header) +
503                         sizeof(struct mwifiex_chan_scan_param_set);
504         }
505
506         if (!priv->wps.session_enable) {
507                 if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
508                         rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
509
510                 if (rsn_ie_len == -1)
511                         return -1;
512         }
513
514         if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info) &&
515             (!bss_desc->disable_11n) &&
516             (priv->adapter->config_bands & BAND_GN ||
517              priv->adapter->config_bands & BAND_AN))
518                 mwifiex_cmd_append_11n_tlv(priv, bss_desc, &pos);
519
520         if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info) &&
521             !bss_desc->disable_11n && !bss_desc->disable_11ac &&
522             priv->adapter->config_bands & BAND_AAC)
523                 mwifiex_cmd_append_11ac_tlv(priv, bss_desc, &pos);
524
525         /* Append vendor specific IE TLV */
526         mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_ASSOC, &pos);
527
528         mwifiex_wmm_process_association_req(priv, &pos, &bss_desc->wmm_ie,
529                                             bss_desc->bcn_ht_cap);
530         if (priv->sec_info.wapi_enabled && priv->wapi_ie_len)
531                 mwifiex_cmd_append_wapi_ie(priv, &pos);
532
533         if (priv->wps.session_enable && priv->wps_ie_len)
534                 mwifiex_cmd_append_wps_ie(priv, &pos);
535
536         mwifiex_cmd_append_generic_ie(priv, &pos);
537
538         mwifiex_cmd_append_tsf_tlv(priv, &pos, bss_desc);
539
540         mwifiex_11h_process_join(priv, &pos, bss_desc);
541
542         cmd->size = cpu_to_le16((u16) (pos - (u8 *) assoc) + S_DS_GEN);
543
544         /* Set the Capability info at last */
545         tmp_cap = bss_desc->cap_info_bitmap;
546
547         if (priv->adapter->config_bands == BAND_B)
548                 tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
549
550         tmp_cap &= CAPINFO_MASK;
551         mwifiex_dbg(priv->adapter, INFO,
552                     "info: ASSOC_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
553                     tmp_cap, CAPINFO_MASK);
554         assoc->cap_info_bitmap = cpu_to_le16(tmp_cap);
555
556         return 0;
557 }
558
559 static const char *assoc_failure_reason_to_str(u16 cap_info)
560 {
561         switch (cap_info) {
562         case CONNECT_ERR_AUTH_ERR_STA_FAILURE:
563                 return "CONNECT_ERR_AUTH_ERR_STA_FAILURE";
564         case CONNECT_ERR_AUTH_MSG_UNHANDLED:
565                 return "CONNECT_ERR_AUTH_MSG_UNHANDLED";
566         case CONNECT_ERR_ASSOC_ERR_TIMEOUT:
567                 return "CONNECT_ERR_ASSOC_ERR_TIMEOUT";
568         case CONNECT_ERR_ASSOC_ERR_AUTH_REFUSED:
569                 return "CONNECT_ERR_ASSOC_ERR_AUTH_REFUSED";
570         case CONNECT_ERR_STA_FAILURE:
571                 return "CONNECT_ERR_STA_FAILURE";
572         }
573
574         return "Unknown connect failure";
575 }
576 /*
577  * Association firmware command response handler
578  *
579  * The response buffer for the association command has the following
580  * memory layout.
581  *
582  * For cases where an association response was not received (indicated
583  * by the CapInfo and AId field):
584  *
585  *     .------------------------------------------------------------.
586  *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
587  *     .------------------------------------------------------------.
588  *     |  cap_info/Error Return(t_u16):                             |
589  *     |           0xFFFF(-1): Internal error                       |
590  *     |           0xFFFE(-2): Authentication unhandled message     |
591  *     |           0xFFFD(-3): Authentication refused               |
592  *     |           0xFFFC(-4): Timeout waiting for AP response      |
593  *     .------------------------------------------------------------.
594  *     |  status_code(t_u16):                                       |
595  *     |        If cap_info is -1:                                  |
596  *     |           An internal firmware failure prevented the       |
597  *     |           command from being processed.  The status_code   |
598  *     |           will be set to 1.                                |
599  *     |                                                            |
600  *     |        If cap_info is -2:                                  |
601  *     |           An authentication frame was received but was     |
602  *     |           not handled by the firmware.  IEEE Status        |
603  *     |           code for the failure is returned.                |
604  *     |                                                            |
605  *     |        If cap_info is -3:                                  |
606  *     |           An authentication frame was received and the     |
607  *     |           status_code is the IEEE Status reported in the   |
608  *     |           response.                                        |
609  *     |                                                            |
610  *     |        If cap_info is -4:                                  |
611  *     |           (1) Association response timeout                 |
612  *     |           (2) Authentication response timeout              |
613  *     .------------------------------------------------------------.
614  *     |  a_id(t_u16): 0xFFFF                                       |
615  *     .------------------------------------------------------------.
616  *
617  *
618  * For cases where an association response was received, the IEEE
619  * standard association response frame is returned:
620  *
621  *     .------------------------------------------------------------.
622  *     |  Header(4 * sizeof(t_u16)):  Standard command response hdr |
623  *     .------------------------------------------------------------.
624  *     |  cap_info(t_u16): IEEE Capability                          |
625  *     .------------------------------------------------------------.
626  *     |  status_code(t_u16): IEEE Status Code                      |
627  *     .------------------------------------------------------------.
628  *     |  a_id(t_u16): IEEE Association ID                          |
629  *     .------------------------------------------------------------.
630  *     |  IEEE IEs(variable): Any received IEs comprising the       |
631  *     |                      remaining portion of a received       |
632  *     |                      association response frame.           |
633  *     .------------------------------------------------------------.
634  *
635  * For simplistic handling, the status_code field can be used to determine
636  * an association success (0) or failure (non-zero).
637  */
638 int mwifiex_ret_802_11_associate(struct mwifiex_private *priv,
639                              struct host_cmd_ds_command *resp)
640 {
641         struct mwifiex_adapter *adapter = priv->adapter;
642         int ret = 0;
643         struct ieee_types_assoc_rsp *assoc_rsp;
644         struct mwifiex_bssdescriptor *bss_desc;
645         bool enable_data = true;
646         u16 cap_info, status_code, aid;
647         const u8 *ie_ptr;
648         struct ieee80211_ht_operation *assoc_resp_ht_oper;
649
650         assoc_rsp = (struct ieee_types_assoc_rsp *) &resp->params;
651
652         cap_info = le16_to_cpu(assoc_rsp->cap_info_bitmap);
653         status_code = le16_to_cpu(assoc_rsp->status_code);
654         aid = le16_to_cpu(assoc_rsp->a_id);
655
656         if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
657                 dev_err(priv->adapter->dev,
658                         "invalid AID value 0x%x; bits 15:14 not set\n",
659                         aid);
660
661         aid &= ~(BIT(15) | BIT(14));
662
663         priv->assoc_rsp_size = min(le16_to_cpu(resp->size) - S_DS_GEN,
664                                    sizeof(priv->assoc_rsp_buf));
665
666         memcpy(priv->assoc_rsp_buf, &resp->params, priv->assoc_rsp_size);
667
668         assoc_rsp->a_id = cpu_to_le16(aid);
669
670         if (status_code) {
671                 priv->adapter->dbg.num_cmd_assoc_failure++;
672                 mwifiex_dbg(priv->adapter, ERROR,
673                             "ASSOC_RESP: failed,\t"
674                             "status code=%d err=%#x a_id=%#x\n",
675                             status_code, cap_info,
676                             le16_to_cpu(assoc_rsp->a_id));
677
678                 mwifiex_dbg(priv->adapter, ERROR, "assoc failure: reason %s\n",
679                             assoc_failure_reason_to_str(cap_info));
680                 if (cap_info == CONNECT_ERR_ASSOC_ERR_TIMEOUT) {
681                         if (status_code == MWIFIEX_ASSOC_CMD_FAILURE_AUTH) {
682                                 ret = WLAN_STATUS_AUTH_TIMEOUT;
683                                 mwifiex_dbg(priv->adapter, ERROR,
684                                             "ASSOC_RESP: AUTH timeout\n");
685                         } else {
686                                 ret = WLAN_STATUS_UNSPECIFIED_FAILURE;
687                                 mwifiex_dbg(priv->adapter, ERROR,
688                                             "ASSOC_RESP: UNSPECIFIED failure\n");
689                         }
690                 } else {
691                         ret = status_code;
692                 }
693
694                 goto done;
695         }
696
697         /* Send a Media Connected event, according to the Spec */
698         priv->media_connected = true;
699
700         priv->adapter->ps_state = PS_STATE_AWAKE;
701         priv->adapter->pps_uapsd_mode = false;
702         priv->adapter->tx_lock_flag = false;
703
704         /* Set the attempted BSSID Index to current */
705         bss_desc = priv->attempted_bss_desc;
706
707         mwifiex_dbg(priv->adapter, INFO, "info: ASSOC_RESP: %s\n",
708                     bss_desc->ssid.ssid);
709
710         /* Make a copy of current BSSID descriptor */
711         memcpy(&priv->curr_bss_params.bss_descriptor,
712                bss_desc, sizeof(struct mwifiex_bssdescriptor));
713
714         /* Update curr_bss_params */
715         priv->curr_bss_params.bss_descriptor.channel
716                 = bss_desc->phy_param_set.ds_param_set.current_chan;
717
718         priv->curr_bss_params.band = (u8) bss_desc->bss_band;
719
720         if (bss_desc->wmm_ie.vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC)
721                 priv->curr_bss_params.wmm_enabled = true;
722         else
723                 priv->curr_bss_params.wmm_enabled = false;
724
725         if ((priv->wmm_required || bss_desc->bcn_ht_cap) &&
726             priv->curr_bss_params.wmm_enabled)
727                 priv->wmm_enabled = true;
728         else
729                 priv->wmm_enabled = false;
730
731         priv->curr_bss_params.wmm_uapsd_enabled = false;
732
733         if (priv->wmm_enabled)
734                 priv->curr_bss_params.wmm_uapsd_enabled
735                         = ((bss_desc->wmm_ie.qos_info_bitmap &
736                                 IEEE80211_WMM_IE_AP_QOSINFO_UAPSD) ? 1 : 0);
737
738         /* Store the bandwidth information from assoc response */
739         ie_ptr = cfg80211_find_ie(WLAN_EID_HT_OPERATION, assoc_rsp->ie_buffer,
740                                   priv->assoc_rsp_size
741                                   - sizeof(struct ieee_types_assoc_rsp));
742         if (ie_ptr) {
743                 assoc_resp_ht_oper = (struct ieee80211_ht_operation *)(ie_ptr
744                                         + sizeof(struct ieee_types_header));
745                 priv->assoc_resp_ht_param = assoc_resp_ht_oper->ht_param;
746                 priv->ht_param_present = true;
747         } else {
748                 priv->ht_param_present = false;
749         }
750
751         mwifiex_dbg(priv->adapter, INFO,
752                     "info: ASSOC_RESP: curr_pkt_filter is %#x\n",
753                     priv->curr_pkt_filter);
754         if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
755                 priv->wpa_is_gtk_set = false;
756
757         if (priv->wmm_enabled) {
758                 /* Don't re-enable carrier until we get the WMM_GET_STATUS
759                    event */
760                 enable_data = false;
761         } else {
762                 /* Since WMM is not enabled, setup the queues with the
763                    defaults */
764                 mwifiex_wmm_setup_queue_priorities(priv, NULL);
765                 mwifiex_wmm_setup_ac_downgrade(priv);
766         }
767
768         if (enable_data)
769                 mwifiex_dbg(priv->adapter, INFO,
770                             "info: post association, re-enabling data flow\n");
771
772         /* Reset SNR/NF/RSSI values */
773         priv->data_rssi_last = 0;
774         priv->data_nf_last = 0;
775         priv->data_rssi_avg = 0;
776         priv->data_nf_avg = 0;
777         priv->bcn_rssi_last = 0;
778         priv->bcn_nf_last = 0;
779         priv->bcn_rssi_avg = 0;
780         priv->bcn_nf_avg = 0;
781         priv->rxpd_rate = 0;
782         priv->rxpd_htinfo = 0;
783
784         mwifiex_save_curr_bcn(priv);
785
786         priv->adapter->dbg.num_cmd_assoc_success++;
787
788         mwifiex_dbg(priv->adapter, INFO, "info: ASSOC_RESP: associated\n");
789
790         /* Add the ra_list here for infra mode as there will be only 1 ra
791            always */
792         mwifiex_ralist_add(priv,
793                            priv->curr_bss_params.bss_descriptor.mac_address);
794
795         if (!netif_carrier_ok(priv->netdev))
796                 netif_carrier_on(priv->netdev);
797         mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
798
799         if (priv->sec_info.wpa_enabled || priv->sec_info.wpa2_enabled)
800                 priv->scan_block = true;
801         else
802                 priv->port_open = true;
803
804 done:
805         /* Need to indicate IOCTL complete */
806         if (adapter->curr_cmd->wait_q_enabled) {
807                 if (ret)
808                         adapter->cmd_wait_q.status = -1;
809                 else
810                         adapter->cmd_wait_q.status = 0;
811         }
812
813         return ret;
814 }
815
816 /*
817  * This function prepares command for ad-hoc start.
818  *
819  * Driver will fill up SSID, BSS mode, IBSS parameters, physical
820  * parameters, probe delay, and capability information. Firmware
821  * will fill up beacon period, basic rates and operational rates.
822  *
823  * In addition, the following TLVs are added -
824  *      - Channel TLV
825  *      - Vendor specific IE
826  *      - WPA/WPA2 IE
827  *      - HT Capabilities IE
828  *      - HT Information IE
829  *
830  * Preparation also includes -
831  *      - Setting command ID and proper size
832  *      - Ensuring correct endian-ness
833  */
834 int
835 mwifiex_cmd_802_11_ad_hoc_start(struct mwifiex_private *priv,
836                                 struct host_cmd_ds_command *cmd,
837                                 struct cfg80211_ssid *req_ssid)
838 {
839         int rsn_ie_len = 0;
840         struct mwifiex_adapter *adapter = priv->adapter;
841         struct host_cmd_ds_802_11_ad_hoc_start *adhoc_start =
842                 &cmd->params.adhoc_start;
843         struct mwifiex_bssdescriptor *bss_desc;
844         u32 cmd_append_size = 0;
845         u32 i;
846         u16 tmp_cap;
847         struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
848         u8 radio_type;
849
850         struct mwifiex_ie_types_htcap *ht_cap;
851         struct mwifiex_ie_types_htinfo *ht_info;
852         u8 *pos = (u8 *) adhoc_start +
853                         sizeof(struct host_cmd_ds_802_11_ad_hoc_start);
854
855         if (!adapter)
856                 return -1;
857
858         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_START);
859
860         bss_desc = &priv->curr_bss_params.bss_descriptor;
861         priv->attempted_bss_desc = bss_desc;
862
863         /*
864          * Fill in the parameters for 2 data structures:
865          *   1. struct host_cmd_ds_802_11_ad_hoc_start command
866          *   2. bss_desc
867          * Driver will fill up SSID, bss_mode,IBSS param, Physical Param,
868          * probe delay, and Cap info.
869          * Firmware will fill up beacon period, Basic rates
870          * and operational rates.
871          */
872
873         memset(adhoc_start->ssid, 0, IEEE80211_MAX_SSID_LEN);
874
875         memcpy(adhoc_start->ssid, req_ssid->ssid, req_ssid->ssid_len);
876
877         mwifiex_dbg(adapter, INFO, "info: ADHOC_S_CMD: SSID = %s\n",
878                     adhoc_start->ssid);
879
880         memset(bss_desc->ssid.ssid, 0, IEEE80211_MAX_SSID_LEN);
881         memcpy(bss_desc->ssid.ssid, req_ssid->ssid, req_ssid->ssid_len);
882
883         bss_desc->ssid.ssid_len = req_ssid->ssid_len;
884
885         /* Set the BSS mode */
886         adhoc_start->bss_mode = HostCmd_BSS_MODE_IBSS;
887         bss_desc->bss_mode = NL80211_IFTYPE_ADHOC;
888         adhoc_start->beacon_period = cpu_to_le16(priv->beacon_period);
889         bss_desc->beacon_period = priv->beacon_period;
890
891         /* Set Physical param set */
892 /* Parameter IE Id */
893 #define DS_PARA_IE_ID   3
894 /* Parameter IE length */
895 #define DS_PARA_IE_LEN  1
896
897         adhoc_start->phy_param_set.ds_param_set.element_id = DS_PARA_IE_ID;
898         adhoc_start->phy_param_set.ds_param_set.len = DS_PARA_IE_LEN;
899
900         if (!mwifiex_get_cfp(priv, adapter->adhoc_start_band,
901                              (u16) priv->adhoc_channel, 0)) {
902                 struct mwifiex_chan_freq_power *cfp;
903                 cfp = mwifiex_get_cfp(priv, adapter->adhoc_start_band,
904                                       FIRST_VALID_CHANNEL, 0);
905                 if (cfp)
906                         priv->adhoc_channel = (u8) cfp->channel;
907         }
908
909         if (!priv->adhoc_channel) {
910                 mwifiex_dbg(adapter, ERROR,
911                             "ADHOC_S_CMD: adhoc_channel cannot be 0\n");
912                 return -1;
913         }
914
915         mwifiex_dbg(adapter, INFO,
916                     "info: ADHOC_S_CMD: creating ADHOC on channel %d\n",
917                     priv->adhoc_channel);
918
919         priv->curr_bss_params.bss_descriptor.channel = priv->adhoc_channel;
920         priv->curr_bss_params.band = adapter->adhoc_start_band;
921
922         bss_desc->channel = priv->adhoc_channel;
923         adhoc_start->phy_param_set.ds_param_set.current_chan =
924                 priv->adhoc_channel;
925
926         memcpy(&bss_desc->phy_param_set, &adhoc_start->phy_param_set,
927                sizeof(union ieee_types_phy_param_set));
928
929         /* Set IBSS param set */
930 /* IBSS parameter IE Id */
931 #define IBSS_PARA_IE_ID   6
932 /* IBSS parameter IE length */
933 #define IBSS_PARA_IE_LEN  2
934
935         adhoc_start->ss_param_set.ibss_param_set.element_id = IBSS_PARA_IE_ID;
936         adhoc_start->ss_param_set.ibss_param_set.len = IBSS_PARA_IE_LEN;
937         adhoc_start->ss_param_set.ibss_param_set.atim_window
938                                         = cpu_to_le16(priv->atim_window);
939         memcpy(&bss_desc->ss_param_set, &adhoc_start->ss_param_set,
940                sizeof(union ieee_types_ss_param_set));
941
942         /* Set Capability info */
943         bss_desc->cap_info_bitmap |= WLAN_CAPABILITY_IBSS;
944         tmp_cap = WLAN_CAPABILITY_IBSS;
945
946         /* Set up privacy in bss_desc */
947         if (priv->sec_info.encryption_mode) {
948                 /* Ad-Hoc capability privacy on */
949                 mwifiex_dbg(adapter, INFO,
950                             "info: ADHOC_S_CMD: wep_status set privacy to WEP\n");
951                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_8021X_WEP;
952                 tmp_cap |= WLAN_CAPABILITY_PRIVACY;
953         } else {
954                 mwifiex_dbg(adapter, INFO,
955                             "info: ADHOC_S_CMD: wep_status NOT set,\t"
956                             "setting privacy to ACCEPT ALL\n");
957                 bss_desc->privacy = MWIFIEX_802_11_PRIV_FILTER_ACCEPT_ALL;
958         }
959
960         memset(adhoc_start->data_rate, 0, sizeof(adhoc_start->data_rate));
961         mwifiex_get_active_data_rates(priv, adhoc_start->data_rate);
962         if ((adapter->adhoc_start_band & BAND_G) &&
963             (priv->curr_pkt_filter & HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON)) {
964                 if (mwifiex_send_cmd(priv, HostCmd_CMD_MAC_CONTROL,
965                                      HostCmd_ACT_GEN_SET, 0,
966                                      &priv->curr_pkt_filter, false)) {
967                         mwifiex_dbg(adapter, ERROR,
968                                     "ADHOC_S_CMD: G Protection config failed\n");
969                         return -1;
970                 }
971         }
972         /* Find the last non zero */
973         for (i = 0; i < sizeof(adhoc_start->data_rate); i++)
974                 if (!adhoc_start->data_rate[i])
975                         break;
976
977         priv->curr_bss_params.num_of_rates = i;
978
979         /* Copy the ad-hoc creating rates into Current BSS rate structure */
980         memcpy(&priv->curr_bss_params.data_rates,
981                &adhoc_start->data_rate, priv->curr_bss_params.num_of_rates);
982
983         mwifiex_dbg(adapter, INFO, "info: ADHOC_S_CMD: rates=%4ph\n",
984                     adhoc_start->data_rate);
985
986         mwifiex_dbg(adapter, INFO, "info: ADHOC_S_CMD: AD-HOC Start command is ready\n");
987
988         if (IS_SUPPORT_MULTI_BANDS(adapter)) {
989                 /* Append a channel TLV */
990                 chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
991                 chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
992                 chan_tlv->header.len =
993                         cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
994
995                 memset(chan_tlv->chan_scan_param, 0x00,
996                        sizeof(struct mwifiex_chan_scan_param_set));
997                 chan_tlv->chan_scan_param[0].chan_number =
998                         (u8) priv->curr_bss_params.bss_descriptor.channel;
999
1000                 mwifiex_dbg(adapter, INFO, "info: ADHOC_S_CMD: TLV Chan = %d\n",
1001                             chan_tlv->chan_scan_param[0].chan_number);
1002
1003                 chan_tlv->chan_scan_param[0].radio_type
1004                        = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
1005                 if (adapter->adhoc_start_band & BAND_GN ||
1006                     adapter->adhoc_start_band & BAND_AN) {
1007                         if (adapter->sec_chan_offset ==
1008                                             IEEE80211_HT_PARAM_CHA_SEC_ABOVE)
1009                                 chan_tlv->chan_scan_param[0].radio_type |=
1010                                         (IEEE80211_HT_PARAM_CHA_SEC_ABOVE << 4);
1011                         else if (adapter->sec_chan_offset ==
1012                                             IEEE80211_HT_PARAM_CHA_SEC_BELOW)
1013                                 chan_tlv->chan_scan_param[0].radio_type |=
1014                                         (IEEE80211_HT_PARAM_CHA_SEC_BELOW << 4);
1015                 }
1016                 mwifiex_dbg(adapter, INFO, "info: ADHOC_S_CMD: TLV Band = %d\n",
1017                             chan_tlv->chan_scan_param[0].radio_type);
1018                 pos += sizeof(chan_tlv->header) +
1019                         sizeof(struct mwifiex_chan_scan_param_set);
1020                 cmd_append_size +=
1021                         sizeof(chan_tlv->header) +
1022                         sizeof(struct mwifiex_chan_scan_param_set);
1023         }
1024
1025         /* Append vendor specific IE TLV */
1026         cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
1027                                 MWIFIEX_VSIE_MASK_ADHOC, &pos);
1028
1029         if (priv->sec_info.wpa_enabled) {
1030                 rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
1031                 if (rsn_ie_len == -1)
1032                         return -1;
1033                 cmd_append_size += rsn_ie_len;
1034         }
1035
1036         if (adapter->adhoc_11n_enabled) {
1037                 /* Fill HT CAPABILITY */
1038                 ht_cap = (struct mwifiex_ie_types_htcap *) pos;
1039                 memset(ht_cap, 0, sizeof(struct mwifiex_ie_types_htcap));
1040                 ht_cap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
1041                 ht_cap->header.len =
1042                        cpu_to_le16(sizeof(struct ieee80211_ht_cap));
1043                 radio_type = mwifiex_band_to_radio_type(
1044                                         priv->adapter->config_bands);
1045                 mwifiex_fill_cap_info(priv, radio_type, &ht_cap->ht_cap);
1046
1047                 if (adapter->sec_chan_offset ==
1048                                         IEEE80211_HT_PARAM_CHA_SEC_NONE) {
1049                         u16 tmp_ht_cap;
1050
1051                         tmp_ht_cap = le16_to_cpu(ht_cap->ht_cap.cap_info);
1052                         tmp_ht_cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
1053                         tmp_ht_cap &= ~IEEE80211_HT_CAP_SGI_40;
1054                         ht_cap->ht_cap.cap_info = cpu_to_le16(tmp_ht_cap);
1055                 }
1056
1057                 pos += sizeof(struct mwifiex_ie_types_htcap);
1058                 cmd_append_size += sizeof(struct mwifiex_ie_types_htcap);
1059
1060                 /* Fill HT INFORMATION */
1061                 ht_info = (struct mwifiex_ie_types_htinfo *) pos;
1062                 memset(ht_info, 0, sizeof(struct mwifiex_ie_types_htinfo));
1063                 ht_info->header.type = cpu_to_le16(WLAN_EID_HT_OPERATION);
1064                 ht_info->header.len =
1065                         cpu_to_le16(sizeof(struct ieee80211_ht_operation));
1066
1067                 ht_info->ht_oper.primary_chan =
1068                         (u8) priv->curr_bss_params.bss_descriptor.channel;
1069                 if (adapter->sec_chan_offset) {
1070                         ht_info->ht_oper.ht_param = adapter->sec_chan_offset;
1071                         ht_info->ht_oper.ht_param |=
1072                                         IEEE80211_HT_PARAM_CHAN_WIDTH_ANY;
1073                 }
1074                 ht_info->ht_oper.operation_mode =
1075                      cpu_to_le16(IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
1076                 ht_info->ht_oper.basic_set[0] = 0xff;
1077                 pos += sizeof(struct mwifiex_ie_types_htinfo);
1078                 cmd_append_size +=
1079                                 sizeof(struct mwifiex_ie_types_htinfo);
1080         }
1081
1082         cmd->size =
1083                 cpu_to_le16((u16)(sizeof(struct host_cmd_ds_802_11_ad_hoc_start)
1084                                   + S_DS_GEN + cmd_append_size));
1085
1086         if (adapter->adhoc_start_band == BAND_B)
1087                 tmp_cap &= ~WLAN_CAPABILITY_SHORT_SLOT_TIME;
1088         else
1089                 tmp_cap |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
1090
1091         adhoc_start->cap_info_bitmap = cpu_to_le16(tmp_cap);
1092
1093         return 0;
1094 }
1095
1096 /*
1097  * This function prepares command for ad-hoc join.
1098  *
1099  * Most of the parameters are set up by copying from the target BSS descriptor
1100  * from the scan response.
1101  *
1102  * In addition, the following TLVs are added -
1103  *      - Channel TLV
1104  *      - Vendor specific IE
1105  *      - WPA/WPA2 IE
1106  *      - 11n IE
1107  *
1108  * Preparation also includes -
1109  *      - Setting command ID and proper size
1110  *      - Ensuring correct endian-ness
1111  */
1112 int
1113 mwifiex_cmd_802_11_ad_hoc_join(struct mwifiex_private *priv,
1114                                struct host_cmd_ds_command *cmd,
1115                                struct mwifiex_bssdescriptor *bss_desc)
1116 {
1117         int rsn_ie_len = 0;
1118         struct host_cmd_ds_802_11_ad_hoc_join *adhoc_join =
1119                 &cmd->params.adhoc_join;
1120         struct mwifiex_ie_types_chan_list_param_set *chan_tlv;
1121         u32 cmd_append_size = 0;
1122         u16 tmp_cap;
1123         u32 i, rates_size = 0;
1124         u16 curr_pkt_filter;
1125         u8 *pos =
1126                 (u8 *) adhoc_join +
1127                 sizeof(struct host_cmd_ds_802_11_ad_hoc_join);
1128
1129 /* Use G protection */
1130 #define USE_G_PROTECTION        0x02
1131         if (bss_desc->erp_flags & USE_G_PROTECTION) {
1132                 curr_pkt_filter =
1133                         priv->
1134                         curr_pkt_filter | HostCmd_ACT_MAC_ADHOC_G_PROTECTION_ON;
1135
1136                 if (mwifiex_send_cmd(priv, HostCmd_CMD_MAC_CONTROL,
1137                                      HostCmd_ACT_GEN_SET, 0,
1138                                      &curr_pkt_filter, false)) {
1139                         mwifiex_dbg(priv->adapter, ERROR,
1140                                     "ADHOC_J_CMD: G Protection config failed\n");
1141                         return -1;
1142                 }
1143         }
1144
1145         priv->attempted_bss_desc = bss_desc;
1146
1147         cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_JOIN);
1148
1149         adhoc_join->bss_descriptor.bss_mode = HostCmd_BSS_MODE_IBSS;
1150
1151         adhoc_join->bss_descriptor.beacon_period
1152                 = cpu_to_le16(bss_desc->beacon_period);
1153
1154         memcpy(&adhoc_join->bss_descriptor.bssid,
1155                &bss_desc->mac_address, ETH_ALEN);
1156
1157         memcpy(&adhoc_join->bss_descriptor.ssid,
1158                &bss_desc->ssid.ssid, bss_desc->ssid.ssid_len);
1159
1160         memcpy(&adhoc_join->bss_descriptor.phy_param_set,
1161                &bss_desc->phy_param_set,
1162                sizeof(union ieee_types_phy_param_set));
1163
1164         memcpy(&adhoc_join->bss_descriptor.ss_param_set,
1165                &bss_desc->ss_param_set, sizeof(union ieee_types_ss_param_set));
1166
1167         tmp_cap = bss_desc->cap_info_bitmap;
1168
1169         tmp_cap &= CAPINFO_MASK;
1170
1171         mwifiex_dbg(priv->adapter, INFO,
1172                     "info: ADHOC_J_CMD: tmp_cap=%4X CAPINFO_MASK=%4lX\n",
1173                     tmp_cap, CAPINFO_MASK);
1174
1175         /* Information on BSSID descriptor passed to FW */
1176         mwifiex_dbg(priv->adapter, INFO,
1177                     "info: ADHOC_J_CMD: BSSID=%pM, SSID='%s'\n",
1178                     adhoc_join->bss_descriptor.bssid,
1179                     adhoc_join->bss_descriptor.ssid);
1180
1181         for (i = 0; i < MWIFIEX_SUPPORTED_RATES &&
1182                     bss_desc->supported_rates[i]; i++)
1183                 ;
1184         rates_size = i;
1185
1186         /* Copy Data Rates from the Rates recorded in scan response */
1187         memset(adhoc_join->bss_descriptor.data_rates, 0,
1188                sizeof(adhoc_join->bss_descriptor.data_rates));
1189         memcpy(adhoc_join->bss_descriptor.data_rates,
1190                bss_desc->supported_rates, rates_size);
1191
1192         /* Copy the adhoc join rates into Current BSS state structure */
1193         priv->curr_bss_params.num_of_rates = rates_size;
1194         memcpy(&priv->curr_bss_params.data_rates, bss_desc->supported_rates,
1195                rates_size);
1196
1197         /* Copy the channel information */
1198         priv->curr_bss_params.bss_descriptor.channel = bss_desc->channel;
1199         priv->curr_bss_params.band = (u8) bss_desc->bss_band;
1200
1201         if (priv->sec_info.wep_enabled || priv->sec_info.wpa_enabled)
1202                 tmp_cap |= WLAN_CAPABILITY_PRIVACY;
1203
1204         if (IS_SUPPORT_MULTI_BANDS(priv->adapter)) {
1205                 /* Append a channel TLV */
1206                 chan_tlv = (struct mwifiex_ie_types_chan_list_param_set *) pos;
1207                 chan_tlv->header.type = cpu_to_le16(TLV_TYPE_CHANLIST);
1208                 chan_tlv->header.len =
1209                         cpu_to_le16(sizeof(struct mwifiex_chan_scan_param_set));
1210
1211                 memset(chan_tlv->chan_scan_param, 0x00,
1212                        sizeof(struct mwifiex_chan_scan_param_set));
1213                 chan_tlv->chan_scan_param[0].chan_number =
1214                         (bss_desc->phy_param_set.ds_param_set.current_chan);
1215                 mwifiex_dbg(priv->adapter, INFO, "info: ADHOC_J_CMD: TLV Chan=%d\n",
1216                             chan_tlv->chan_scan_param[0].chan_number);
1217
1218                 chan_tlv->chan_scan_param[0].radio_type =
1219                         mwifiex_band_to_radio_type((u8) bss_desc->bss_band);
1220
1221                 mwifiex_dbg(priv->adapter, INFO, "info: ADHOC_J_CMD: TLV Band=%d\n",
1222                             chan_tlv->chan_scan_param[0].radio_type);
1223                 pos += sizeof(chan_tlv->header) +
1224                                 sizeof(struct mwifiex_chan_scan_param_set);
1225                 cmd_append_size += sizeof(chan_tlv->header) +
1226                                 sizeof(struct mwifiex_chan_scan_param_set);
1227         }
1228
1229         if (priv->sec_info.wpa_enabled)
1230                 rsn_ie_len = mwifiex_append_rsn_ie_wpa_wpa2(priv, &pos);
1231         if (rsn_ie_len == -1)
1232                 return -1;
1233         cmd_append_size += rsn_ie_len;
1234
1235         if (ISSUPP_11NENABLED(priv->adapter->fw_cap_info))
1236                 cmd_append_size += mwifiex_cmd_append_11n_tlv(priv,
1237                         bss_desc, &pos);
1238
1239         /* Append vendor specific IE TLV */
1240         cmd_append_size += mwifiex_cmd_append_vsie_tlv(priv,
1241                         MWIFIEX_VSIE_MASK_ADHOC, &pos);
1242
1243         cmd->size = cpu_to_le16
1244                 ((u16) (sizeof(struct host_cmd_ds_802_11_ad_hoc_join)
1245                         + S_DS_GEN + cmd_append_size));
1246
1247         adhoc_join->bss_descriptor.cap_info_bitmap = cpu_to_le16(tmp_cap);
1248
1249         return 0;
1250 }
1251
1252 /*
1253  * This function handles the command response of ad-hoc start and
1254  * ad-hoc join.
1255  *
1256  * The function generates a device-connected event to notify
1257  * the applications, in case of successful ad-hoc start/join, and
1258  * saves the beacon buffer.
1259  */
1260 int mwifiex_ret_802_11_ad_hoc(struct mwifiex_private *priv,
1261                               struct host_cmd_ds_command *resp)
1262 {
1263         int ret = 0;
1264         struct mwifiex_adapter *adapter = priv->adapter;
1265         struct host_cmd_ds_802_11_ad_hoc_start_result *start_result =
1266                                 &resp->params.start_result;
1267         struct host_cmd_ds_802_11_ad_hoc_join_result *join_result =
1268                                 &resp->params.join_result;
1269         struct mwifiex_bssdescriptor *bss_desc;
1270         u16 cmd = le16_to_cpu(resp->command);
1271         u8 result;
1272
1273         if (cmd == HostCmd_CMD_802_11_AD_HOC_START)
1274                 result = start_result->result;
1275         else
1276                 result = join_result->result;
1277
1278         bss_desc = priv->attempted_bss_desc;
1279
1280         /* Join result code 0 --> SUCCESS */
1281         if (result) {
1282                 mwifiex_dbg(priv->adapter, ERROR, "ADHOC_RESP: failed\n");
1283                 if (priv->media_connected)
1284                         mwifiex_reset_connect_state(priv, result);
1285
1286                 memset(&priv->curr_bss_params.bss_descriptor,
1287                        0x00, sizeof(struct mwifiex_bssdescriptor));
1288
1289                 ret = -1;
1290                 goto done;
1291         }
1292
1293         /* Send a Media Connected event, according to the Spec */
1294         priv->media_connected = true;
1295
1296         if (le16_to_cpu(resp->command) == HostCmd_CMD_802_11_AD_HOC_START) {
1297                 mwifiex_dbg(priv->adapter, INFO, "info: ADHOC_S_RESP %s\n",
1298                             bss_desc->ssid.ssid);
1299
1300                 /* Update the created network descriptor with the new BSSID */
1301                 memcpy(bss_desc->mac_address,
1302                        start_result->bssid, ETH_ALEN);
1303
1304                 priv->adhoc_state = ADHOC_STARTED;
1305         } else {
1306                 /*
1307                  * Now the join cmd should be successful.
1308                  * If BSSID has changed use SSID to compare instead of BSSID
1309                  */
1310                 mwifiex_dbg(priv->adapter, INFO,
1311                             "info: ADHOC_J_RESP %s\n",
1312                             bss_desc->ssid.ssid);
1313
1314                 /*
1315                  * Make a copy of current BSSID descriptor, only needed for
1316                  * join since the current descriptor is already being used
1317                  * for adhoc start
1318                  */
1319                 memcpy(&priv->curr_bss_params.bss_descriptor,
1320                        bss_desc, sizeof(struct mwifiex_bssdescriptor));
1321
1322                 priv->adhoc_state = ADHOC_JOINED;
1323         }
1324
1325         mwifiex_dbg(priv->adapter, INFO, "info: ADHOC_RESP: channel = %d\n",
1326                     priv->adhoc_channel);
1327         mwifiex_dbg(priv->adapter, INFO, "info: ADHOC_RESP: BSSID = %pM\n",
1328                     priv->curr_bss_params.bss_descriptor.mac_address);
1329
1330         if (!netif_carrier_ok(priv->netdev))
1331                 netif_carrier_on(priv->netdev);
1332         mwifiex_wake_up_net_dev_queue(priv->netdev, adapter);
1333
1334         mwifiex_save_curr_bcn(priv);
1335
1336 done:
1337         /* Need to indicate IOCTL complete */
1338         if (adapter->curr_cmd->wait_q_enabled) {
1339                 if (ret)
1340                         adapter->cmd_wait_q.status = -1;
1341                 else
1342                         adapter->cmd_wait_q.status = 0;
1343
1344         }
1345
1346         return ret;
1347 }
1348
1349 /*
1350  * This function associates to a specific BSS discovered in a scan.
1351  *
1352  * It clears any past association response stored for application
1353  * retrieval and calls the command preparation routine to send the
1354  * command to firmware.
1355  */
1356 int mwifiex_associate(struct mwifiex_private *priv,
1357                       struct mwifiex_bssdescriptor *bss_desc)
1358 {
1359         /* Return error if the adapter is not STA role or table entry
1360          * is not marked as infra.
1361          */
1362         if ((GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_STA) ||
1363             (bss_desc->bss_mode != NL80211_IFTYPE_STATION))
1364                 return -1;
1365
1366         if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info) &&
1367             !bss_desc->disable_11n && !bss_desc->disable_11ac &&
1368             priv->adapter->config_bands & BAND_AAC)
1369                 mwifiex_set_11ac_ba_params(priv);
1370         else
1371                 mwifiex_set_ba_params(priv);
1372
1373         /* Clear any past association response stored for application
1374            retrieval */
1375         priv->assoc_rsp_size = 0;
1376
1377         return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_ASSOCIATE,
1378                                 HostCmd_ACT_GEN_SET, 0, bss_desc, true);
1379 }
1380
1381 /*
1382  * This function starts an ad-hoc network.
1383  *
1384  * It calls the command preparation routine to send the command to firmware.
1385  */
1386 int
1387 mwifiex_adhoc_start(struct mwifiex_private *priv,
1388                     struct cfg80211_ssid *adhoc_ssid)
1389 {
1390         mwifiex_dbg(priv->adapter, INFO, "info: Adhoc Channel = %d\n",
1391                     priv->adhoc_channel);
1392         mwifiex_dbg(priv->adapter, INFO, "info: curr_bss_params.channel = %d\n",
1393                     priv->curr_bss_params.bss_descriptor.channel);
1394         mwifiex_dbg(priv->adapter, INFO, "info: curr_bss_params.band = %d\n",
1395                     priv->curr_bss_params.band);
1396
1397         if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info) &&
1398             priv->adapter->config_bands & BAND_AAC)
1399                 mwifiex_set_11ac_ba_params(priv);
1400         else
1401                 mwifiex_set_ba_params(priv);
1402
1403         return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_AD_HOC_START,
1404                                 HostCmd_ACT_GEN_SET, 0, adhoc_ssid, true);
1405 }
1406
1407 /*
1408  * This function joins an ad-hoc network found in a previous scan.
1409  *
1410  * It calls the command preparation routine to send the command to firmware,
1411  * if already not connected to the requested SSID.
1412  */
1413 int mwifiex_adhoc_join(struct mwifiex_private *priv,
1414                        struct mwifiex_bssdescriptor *bss_desc)
1415 {
1416         mwifiex_dbg(priv->adapter, INFO,
1417                     "info: adhoc join: curr_bss ssid =%s\n",
1418                     priv->curr_bss_params.bss_descriptor.ssid.ssid);
1419         mwifiex_dbg(priv->adapter, INFO,
1420                     "info: adhoc join: curr_bss ssid_len =%u\n",
1421                     priv->curr_bss_params.bss_descriptor.ssid.ssid_len);
1422         mwifiex_dbg(priv->adapter, INFO, "info: adhoc join: ssid =%s\n",
1423                     bss_desc->ssid.ssid);
1424         mwifiex_dbg(priv->adapter, INFO, "info: adhoc join: ssid_len =%u\n",
1425                     bss_desc->ssid.ssid_len);
1426
1427         /* Check if the requested SSID is already joined */
1428         if (priv->curr_bss_params.bss_descriptor.ssid.ssid_len &&
1429             !mwifiex_ssid_cmp(&bss_desc->ssid,
1430                               &priv->curr_bss_params.bss_descriptor.ssid) &&
1431             (priv->curr_bss_params.bss_descriptor.bss_mode ==
1432                                                         NL80211_IFTYPE_ADHOC)) {
1433                 mwifiex_dbg(priv->adapter, INFO,
1434                             "info: ADHOC_J_CMD: new ad-hoc SSID\t"
1435                             "is the same as current; not attempting to re-join\n");
1436                 return -1;
1437         }
1438
1439         if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info) &&
1440             !bss_desc->disable_11n && !bss_desc->disable_11ac &&
1441             priv->adapter->config_bands & BAND_AAC)
1442                 mwifiex_set_11ac_ba_params(priv);
1443         else
1444                 mwifiex_set_ba_params(priv);
1445
1446         mwifiex_dbg(priv->adapter, INFO,
1447                     "info: curr_bss_params.channel = %d\n",
1448                     priv->curr_bss_params.bss_descriptor.channel);
1449         mwifiex_dbg(priv->adapter, INFO,
1450                     "info: curr_bss_params.band = %c\n",
1451                     priv->curr_bss_params.band);
1452
1453         return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_AD_HOC_JOIN,
1454                                 HostCmd_ACT_GEN_SET, 0, bss_desc, true);
1455 }
1456
1457 /*
1458  * This function deauthenticates/disconnects from infra network by sending
1459  * deauthentication request.
1460  */
1461 static int mwifiex_deauthenticate_infra(struct mwifiex_private *priv, u8 *mac)
1462 {
1463         u8 mac_address[ETH_ALEN];
1464         int ret;
1465
1466         if (!mac || is_zero_ether_addr(mac))
1467                 memcpy(mac_address,
1468                        priv->curr_bss_params.bss_descriptor.mac_address,
1469                        ETH_ALEN);
1470         else
1471                 memcpy(mac_address, mac, ETH_ALEN);
1472
1473         ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_DEAUTHENTICATE,
1474                                HostCmd_ACT_GEN_SET, 0, mac_address, true);
1475
1476         return ret;
1477 }
1478
1479 /*
1480  * This function deauthenticates/disconnects from a BSS.
1481  *
1482  * In case of infra made, it sends deauthentication request, and
1483  * in case of ad-hoc mode, a stop network request is sent to the firmware.
1484  * In AP mode, a command to stop bss is sent to firmware.
1485  */
1486 int mwifiex_deauthenticate(struct mwifiex_private *priv, u8 *mac)
1487 {
1488         int ret = 0;
1489
1490         if (!priv->media_connected)
1491                 return 0;
1492
1493         switch (priv->bss_mode) {
1494         case NL80211_IFTYPE_STATION:
1495         case NL80211_IFTYPE_P2P_CLIENT:
1496                 ret = mwifiex_deauthenticate_infra(priv, mac);
1497                 if (ret)
1498                         cfg80211_disconnected(priv->netdev, 0, NULL, 0,
1499                                               true, GFP_KERNEL);
1500                 break;
1501         case NL80211_IFTYPE_ADHOC:
1502                 return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_AD_HOC_STOP,
1503                                         HostCmd_ACT_GEN_SET, 0, NULL, true);
1504         case NL80211_IFTYPE_AP:
1505                 return mwifiex_send_cmd(priv, HostCmd_CMD_UAP_BSS_STOP,
1506                                         HostCmd_ACT_GEN_SET, 0, NULL, true);
1507         default:
1508                 break;
1509         }
1510
1511         return ret;
1512 }
1513
1514 /* This function deauthenticates/disconnects from all BSS. */
1515 void mwifiex_deauthenticate_all(struct mwifiex_adapter *adapter)
1516 {
1517         struct mwifiex_private *priv;
1518         int i;
1519
1520         for (i = 0; i < adapter->priv_num; i++) {
1521                 priv = adapter->priv[i];
1522                 if (priv)
1523                         mwifiex_deauthenticate(priv, NULL);
1524         }
1525 }
1526 EXPORT_SYMBOL_GPL(mwifiex_deauthenticate_all);
1527
1528 /*
1529  * This function converts band to radio type used in channel TLV.
1530  */
1531 u8
1532 mwifiex_band_to_radio_type(u8 band)
1533 {
1534         switch (band) {
1535         case BAND_A:
1536         case BAND_AN:
1537         case BAND_A | BAND_AN:
1538         case BAND_A | BAND_AN | BAND_AAC:
1539                 return HostCmd_SCAN_RADIO_TYPE_A;
1540         case BAND_B:
1541         case BAND_G:
1542         case BAND_B | BAND_G:
1543         default:
1544                 return HostCmd_SCAN_RADIO_TYPE_BG;
1545         }
1546 }