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Commit | Line | Data |
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876c9d3a MT |
1 | /** |
2 | * Functions implementing wlan scan IOCTL and firmware command APIs | |
3 | * | |
4 | * IOCTL handlers as well as command preperation and response routines | |
5 | * for sending scan commands to the firmware. | |
6 | */ | |
7 | #include <linux/ctype.h> | |
8 | #include <linux/if.h> | |
9 | #include <linux/netdevice.h> | |
10 | #include <linux/wireless.h> | |
fcdb53db | 11 | #include <linux/etherdevice.h> |
876c9d3a MT |
12 | |
13 | #include <net/ieee80211.h> | |
14 | #include <net/iw_handler.h> | |
15 | ||
16 | #include "host.h" | |
17 | #include "decl.h" | |
18 | #include "dev.h" | |
19 | #include "scan.h" | |
20 | ||
21 | //! Approximate amount of data needed to pass a scan result back to iwlist | |
22 | #define MAX_SCAN_CELL_SIZE (IW_EV_ADDR_LEN \ | |
23 | + IW_ESSID_MAX_SIZE \ | |
24 | + IW_EV_UINT_LEN \ | |
25 | + IW_EV_FREQ_LEN \ | |
26 | + IW_EV_QUAL_LEN \ | |
27 | + IW_ESSID_MAX_SIZE \ | |
28 | + IW_EV_PARAM_LEN \ | |
29 | + 40) /* 40 for WPAIE */ | |
30 | ||
31 | //! Memory needed to store a max sized channel List TLV for a firmware scan | |
32 | #define CHAN_TLV_MAX_SIZE (sizeof(struct mrvlietypesheader) \ | |
33 | + (MRVDRV_MAX_CHANNELS_PER_SCAN \ | |
34 | * sizeof(struct chanscanparamset))) | |
35 | ||
36 | //! Memory needed to store a max number/size SSID TLV for a firmware scan | |
37 | #define SSID_TLV_MAX_SIZE (1 * sizeof(struct mrvlietypes_ssidparamset)) | |
38 | ||
39 | //! Maximum memory needed for a wlan_scan_cmd_config with all TLVs at max | |
40 | #define MAX_SCAN_CFG_ALLOC (sizeof(struct wlan_scan_cmd_config) \ | |
41 | + sizeof(struct mrvlietypes_numprobes) \ | |
42 | + CHAN_TLV_MAX_SIZE \ | |
43 | + SSID_TLV_MAX_SIZE) | |
44 | ||
45 | //! The maximum number of channels the firmware can scan per command | |
46 | #define MRVDRV_MAX_CHANNELS_PER_SCAN 14 | |
47 | ||
48 | /** | |
49 | * @brief Number of channels to scan per firmware scan command issuance. | |
50 | * | |
51 | * Number restricted to prevent hitting the limit on the amount of scan data | |
52 | * returned in a single firmware scan command. | |
53 | */ | |
54 | #define MRVDRV_CHANNELS_PER_SCAN_CMD 4 | |
55 | ||
56 | //! Scan time specified in the channel TLV for each channel for passive scans | |
57 | #define MRVDRV_PASSIVE_SCAN_CHAN_TIME 100 | |
58 | ||
59 | //! Scan time specified in the channel TLV for each channel for active scans | |
60 | #define MRVDRV_ACTIVE_SCAN_CHAN_TIME 100 | |
61 | ||
123e0e04 DW |
62 | static const u8 zeromac[ETH_ALEN] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
63 | static const u8 bcastmac[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; | |
eb8f7330 | 64 | |
fcdb53db DW |
65 | static inline void clear_bss_descriptor (struct bss_descriptor * bss) |
66 | { | |
67 | /* Don't blow away ->list, just BSS data */ | |
68 | memset(bss, 0, offsetof(struct bss_descriptor, list)); | |
69 | } | |
70 | ||
71 | static inline int match_bss_no_security(struct wlan_802_11_security * secinfo, | |
72 | struct bss_descriptor * match_bss) | |
73 | { | |
74 | if ( !secinfo->wep_enabled | |
75 | && !secinfo->WPAenabled | |
76 | && !secinfo->WPA2enabled | |
77 | && match_bss->wpa_ie[0] != WPA_IE | |
78 | && match_bss->rsn_ie[0] != WPA2_IE | |
79 | && !match_bss->privacy) { | |
80 | return 1; | |
81 | } | |
82 | return 0; | |
83 | } | |
84 | ||
85 | static inline int match_bss_static_wep(struct wlan_802_11_security * secinfo, | |
86 | struct bss_descriptor * match_bss) | |
87 | { | |
88 | if ( secinfo->wep_enabled | |
89 | && !secinfo->WPAenabled | |
90 | && !secinfo->WPA2enabled | |
91 | && match_bss->privacy) { | |
92 | return 1; | |
93 | } | |
94 | return 0; | |
95 | } | |
96 | ||
97 | static inline int match_bss_wpa(struct wlan_802_11_security * secinfo, | |
98 | struct bss_descriptor * match_bss) | |
99 | { | |
100 | if ( !secinfo->wep_enabled | |
101 | && secinfo->WPAenabled | |
fcdb53db DW |
102 | && (match_bss->wpa_ie[0] == WPA_IE) |
103 | /* privacy bit may NOT be set in some APs like LinkSys WRT54G | |
104 | && bss->privacy */ | |
105 | ) { | |
106 | return 1; | |
107 | } | |
108 | return 0; | |
109 | } | |
110 | ||
111 | static inline int match_bss_wpa2(struct wlan_802_11_security * secinfo, | |
112 | struct bss_descriptor * match_bss) | |
113 | { | |
114 | if ( !secinfo->wep_enabled | |
fcdb53db DW |
115 | && secinfo->WPA2enabled |
116 | && (match_bss->rsn_ie[0] == WPA2_IE) | |
117 | /* privacy bit may NOT be set in some APs like LinkSys WRT54G | |
118 | && bss->privacy */ | |
119 | ) { | |
120 | return 1; | |
121 | } | |
122 | return 0; | |
123 | } | |
124 | ||
125 | static inline int match_bss_dynamic_wep(struct wlan_802_11_security * secinfo, | |
126 | struct bss_descriptor * match_bss) | |
127 | { | |
128 | if ( !secinfo->wep_enabled | |
129 | && !secinfo->WPAenabled | |
130 | && !secinfo->WPA2enabled | |
131 | && (match_bss->wpa_ie[0] != WPA_IE) | |
132 | && (match_bss->rsn_ie[0] != WPA2_IE) | |
133 | && match_bss->privacy) { | |
134 | return 1; | |
135 | } | |
136 | return 0; | |
137 | } | |
876c9d3a MT |
138 | |
139 | /** | |
140 | * @brief Check if a scanned network compatible with the driver settings | |
141 | * | |
142 | * WEP WPA WPA2 ad-hoc encrypt Network | |
143 | * enabled enabled enabled AES mode privacy WPA WPA2 Compatible | |
144 | * 0 0 0 0 NONE 0 0 0 yes No security | |
145 | * 1 0 0 0 NONE 1 0 0 yes Static WEP | |
146 | * 0 1 0 0 x 1x 1 x yes WPA | |
147 | * 0 0 1 0 x 1x x 1 yes WPA2 | |
148 | * 0 0 0 1 NONE 1 0 0 yes Ad-hoc AES | |
149 | * 0 0 0 0 !=NONE 1 0 0 yes Dynamic WEP | |
150 | * | |
151 | * | |
152 | * @param adapter A pointer to wlan_adapter | |
153 | * @param index Index in scantable to check against current driver settings | |
154 | * @param mode Network mode: Infrastructure or IBSS | |
155 | * | |
156 | * @return Index in scantable, or error code if negative | |
157 | */ | |
fcdb53db DW |
158 | static int is_network_compatible(wlan_adapter * adapter, |
159 | struct bss_descriptor * bss, u8 mode) | |
876c9d3a | 160 | { |
fcdb53db DW |
161 | int matched = 0; |
162 | ||
9012b28a | 163 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 164 | |
fcdb53db DW |
165 | if (bss->mode != mode) |
166 | goto done; | |
876c9d3a | 167 | |
fcdb53db DW |
168 | if ((matched = match_bss_no_security(&adapter->secinfo, bss))) { |
169 | goto done; | |
170 | } else if ((matched = match_bss_static_wep(&adapter->secinfo, bss))) { | |
171 | goto done; | |
172 | } else if ((matched = match_bss_wpa(&adapter->secinfo, bss))) { | |
173 | lbs_deb_scan( | |
174 | "is_network_compatible() WPA: wpa_ie=%#x " | |
175 | "wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s " | |
176 | "privacy=%#x\n", bss->wpa_ie[0], bss->rsn_ie[0], | |
889c05bd DW |
177 | adapter->secinfo.wep_enabled ? "e" : "d", |
178 | adapter->secinfo.WPAenabled ? "e" : "d", | |
179 | adapter->secinfo.WPA2enabled ? "e" : "d", | |
fcdb53db DW |
180 | bss->privacy); |
181 | goto done; | |
182 | } else if ((matched = match_bss_wpa2(&adapter->secinfo, bss))) { | |
183 | lbs_deb_scan( | |
184 | "is_network_compatible() WPA2: wpa_ie=%#x " | |
185 | "wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s " | |
186 | "privacy=%#x\n", bss->wpa_ie[0], bss->rsn_ie[0], | |
187 | adapter->secinfo.wep_enabled ? "e" : "d", | |
188 | adapter->secinfo.WPAenabled ? "e" : "d", | |
189 | adapter->secinfo.WPA2enabled ? "e" : "d", | |
190 | bss->privacy); | |
191 | goto done; | |
192 | } else if ((matched = match_bss_dynamic_wep(&adapter->secinfo, bss))) { | |
193 | lbs_deb_scan( | |
194 | "is_network_compatible() dynamic WEP: " | |
195 | "wpa_ie=%#x wpa2_ie=%#x privacy=%#x\n", | |
196 | bss->wpa_ie[0], | |
197 | bss->rsn_ie[0], | |
198 | bss->privacy); | |
9012b28a | 199 | goto done; |
876c9d3a MT |
200 | } |
201 | ||
fcdb53db DW |
202 | /* bss security settings don't match those configured on card */ |
203 | lbs_deb_scan( | |
204 | "is_network_compatible() FAILED: wpa_ie=%#x " | |
205 | "wpa2_ie=%#x WEP=%s WPA=%s WPA2=%s privacy=%#x\n", | |
206 | bss->wpa_ie[0], bss->rsn_ie[0], | |
207 | adapter->secinfo.wep_enabled ? "e" : "d", | |
208 | adapter->secinfo.WPAenabled ? "e" : "d", | |
209 | adapter->secinfo.WPA2enabled ? "e" : "d", | |
210 | bss->privacy); | |
9012b28a HS |
211 | |
212 | done: | |
fcdb53db DW |
213 | lbs_deb_leave(LBS_DEB_SCAN); |
214 | return matched; | |
876c9d3a MT |
215 | } |
216 | ||
217 | /** | |
218 | * @brief Post process the scan table after a new scan command has completed | |
219 | * | |
220 | * Inspect each entry of the scan table and try to find an entry that | |
221 | * matches our current associated/joined network from the scan. If | |
222 | * one is found, update the stored copy of the bssdescriptor for our | |
223 | * current network. | |
224 | * | |
225 | * Debug dump the current scan table contents if compiled accordingly. | |
226 | * | |
227 | * @param priv A pointer to wlan_private structure | |
228 | * | |
229 | * @return void | |
230 | */ | |
231 | static void wlan_scan_process_results(wlan_private * priv) | |
232 | { | |
233 | wlan_adapter *adapter = priv->adapter; | |
fcdb53db | 234 | struct bss_descriptor * iter_bss; |
d8efea25 | 235 | int i = 0; |
876c9d3a | 236 | |
e76850d6 DW |
237 | if (adapter->connect_status == libertas_connected) |
238 | return; | |
fcdb53db | 239 | |
e76850d6 | 240 | mutex_lock(&adapter->lock); |
fcdb53db DW |
241 | list_for_each_entry (iter_bss, &adapter->network_list, list) { |
242 | lbs_deb_scan("Scan:(%02d) " MAC_FMT ", RSSI[%03d], SSID[%s]\n", | |
02eb229b | 243 | i++, MAC_ARG(iter_bss->bssid), (s32) iter_bss->rssi, |
d8efea25 | 244 | escape_essid(iter_bss->ssid, iter_bss->ssid_len)); |
876c9d3a | 245 | } |
fcdb53db | 246 | mutex_unlock(&adapter->lock); |
876c9d3a MT |
247 | } |
248 | ||
249 | /** | |
250 | * @brief Create a channel list for the driver to scan based on region info | |
251 | * | |
252 | * Use the driver region/band information to construct a comprehensive list | |
253 | * of channels to scan. This routine is used for any scan that is not | |
254 | * provided a specific channel list to scan. | |
255 | * | |
256 | * @param priv A pointer to wlan_private structure | |
257 | * @param scanchanlist Output parameter: resulting channel list to scan | |
258 | * @param filteredscan Flag indicating whether or not a BSSID or SSID filter | |
259 | * is being sent in the command to firmware. Used to | |
260 | * increase the number of channels sent in a scan | |
261 | * command and to disable the firmware channel scan | |
262 | * filter. | |
263 | * | |
264 | * @return void | |
265 | */ | |
266 | static void wlan_scan_create_channel_list(wlan_private * priv, | |
267 | struct chanscanparamset * scanchanlist, | |
268 | u8 filteredscan) | |
269 | { | |
270 | ||
271 | wlan_adapter *adapter = priv->adapter; | |
272 | struct region_channel *scanregion; | |
273 | struct chan_freq_power *cfp; | |
274 | int rgnidx; | |
275 | int chanidx; | |
276 | int nextchan; | |
277 | u8 scantype; | |
278 | ||
279 | chanidx = 0; | |
280 | ||
281 | /* Set the default scan type to the user specified type, will later | |
282 | * be changed to passive on a per channel basis if restricted by | |
283 | * regulatory requirements (11d or 11h) | |
284 | */ | |
285 | scantype = adapter->scantype; | |
286 | ||
287 | for (rgnidx = 0; rgnidx < ARRAY_SIZE(adapter->region_channel); rgnidx++) { | |
288 | if (priv->adapter->enable11d && | |
289 | adapter->connect_status != libertas_connected) { | |
290 | /* Scan all the supported chan for the first scan */ | |
291 | if (!adapter->universal_channel[rgnidx].valid) | |
292 | continue; | |
293 | scanregion = &adapter->universal_channel[rgnidx]; | |
294 | ||
295 | /* clear the parsed_region_chan for the first scan */ | |
296 | memset(&adapter->parsed_region_chan, 0x00, | |
297 | sizeof(adapter->parsed_region_chan)); | |
298 | } else { | |
299 | if (!adapter->region_channel[rgnidx].valid) | |
300 | continue; | |
301 | scanregion = &adapter->region_channel[rgnidx]; | |
302 | } | |
303 | ||
304 | for (nextchan = 0; | |
305 | nextchan < scanregion->nrcfp; nextchan++, chanidx++) { | |
306 | ||
307 | cfp = scanregion->CFP + nextchan; | |
308 | ||
309 | if (priv->adapter->enable11d) { | |
310 | scantype = | |
311 | libertas_get_scan_type_11d(cfp->channel, | |
312 | &adapter-> | |
313 | parsed_region_chan); | |
314 | } | |
315 | ||
316 | switch (scanregion->band) { | |
317 | case BAND_B: | |
318 | case BAND_G: | |
319 | default: | |
320 | scanchanlist[chanidx].radiotype = | |
321 | cmd_scan_radio_type_bg; | |
322 | break; | |
323 | } | |
324 | ||
325 | if (scantype == cmd_scan_type_passive) { | |
326 | scanchanlist[chanidx].maxscantime = | |
981f187b | 327 | cpu_to_le16(MRVDRV_PASSIVE_SCAN_CHAN_TIME); |
876c9d3a MT |
328 | scanchanlist[chanidx].chanscanmode.passivescan = |
329 | 1; | |
330 | } else { | |
331 | scanchanlist[chanidx].maxscantime = | |
981f187b | 332 | cpu_to_le16(MRVDRV_ACTIVE_SCAN_CHAN_TIME); |
876c9d3a MT |
333 | scanchanlist[chanidx].chanscanmode.passivescan = |
334 | 0; | |
335 | } | |
336 | ||
337 | scanchanlist[chanidx].channumber = cfp->channel; | |
338 | ||
339 | if (filteredscan) { | |
340 | scanchanlist[chanidx].chanscanmode. | |
341 | disablechanfilt = 1; | |
342 | } | |
343 | } | |
344 | } | |
345 | } | |
346 | ||
347 | /** | |
348 | * @brief Construct a wlan_scan_cmd_config structure to use in issue scan cmds | |
349 | * | |
350 | * Application layer or other functions can invoke wlan_scan_networks | |
351 | * with a scan configuration supplied in a wlan_ioctl_user_scan_cfg struct. | |
352 | * This structure is used as the basis of one or many wlan_scan_cmd_config | |
353 | * commands that are sent to the command processing module and sent to | |
354 | * firmware. | |
355 | * | |
356 | * Create a wlan_scan_cmd_config based on the following user supplied | |
357 | * parameters (if present): | |
358 | * - SSID filter | |
359 | * - BSSID filter | |
360 | * - Number of Probes to be sent | |
361 | * - channel list | |
362 | * | |
363 | * If the SSID or BSSID filter is not present, disable/clear the filter. | |
364 | * If the number of probes is not set, use the adapter default setting | |
365 | * Qualify the channel | |
366 | * | |
367 | * @param priv A pointer to wlan_private structure | |
368 | * @param puserscanin NULL or pointer to scan configuration parameters | |
369 | * @param ppchantlvout Output parameter: Pointer to the start of the | |
370 | * channel TLV portion of the output scan config | |
371 | * @param pscanchanlist Output parameter: Pointer to the resulting channel | |
372 | * list to scan | |
373 | * @param pmaxchanperscan Output parameter: Number of channels to scan for | |
374 | * each issuance of the firmware scan command | |
375 | * @param pfilteredscan Output parameter: Flag indicating whether or not | |
376 | * a BSSID or SSID filter is being sent in the | |
377 | * command to firmware. Used to increase the number | |
378 | * of channels sent in a scan command and to | |
379 | * disable the firmware channel scan filter. | |
380 | * @param pscancurrentonly Output parameter: Flag indicating whether or not | |
381 | * we are only scanning our current active channel | |
382 | * | |
383 | * @return resulting scan configuration | |
384 | */ | |
385 | static struct wlan_scan_cmd_config * | |
386 | wlan_scan_setup_scan_config(wlan_private * priv, | |
387 | const struct wlan_ioctl_user_scan_cfg * puserscanin, | |
388 | struct mrvlietypes_chanlistparamset ** ppchantlvout, | |
389 | struct chanscanparamset * pscanchanlist, | |
390 | int *pmaxchanperscan, | |
391 | u8 * pfilteredscan, | |
392 | u8 * pscancurrentonly) | |
393 | { | |
394 | wlan_adapter *adapter = priv->adapter; | |
876c9d3a MT |
395 | struct mrvlietypes_numprobes *pnumprobestlv; |
396 | struct mrvlietypes_ssidparamset *pssidtlv; | |
397 | struct wlan_scan_cmd_config * pscancfgout = NULL; | |
398 | u8 *ptlvpos; | |
399 | u16 numprobes; | |
876c9d3a MT |
400 | int chanidx; |
401 | int scantype; | |
402 | int scandur; | |
403 | int channel; | |
404 | int radiotype; | |
405 | ||
406 | pscancfgout = kzalloc(MAX_SCAN_CFG_ALLOC, GFP_KERNEL); | |
407 | if (pscancfgout == NULL) | |
408 | goto out; | |
409 | ||
410 | /* The tlvbufferlen is calculated for each scan command. The TLVs added | |
411 | * in this routine will be preserved since the routine that sends | |
412 | * the command will append channelTLVs at *ppchantlvout. The difference | |
413 | * between the *ppchantlvout and the tlvbuffer start will be used | |
414 | * to calculate the size of anything we add in this routine. | |
415 | */ | |
416 | pscancfgout->tlvbufferlen = 0; | |
417 | ||
418 | /* Running tlv pointer. Assigned to ppchantlvout at end of function | |
419 | * so later routines know where channels can be added to the command buf | |
420 | */ | |
421 | ptlvpos = pscancfgout->tlvbuffer; | |
422 | ||
423 | /* | |
424 | * Set the initial scan paramters for progressive scanning. If a specific | |
425 | * BSSID or SSID is used, the number of channels in the scan command | |
426 | * will be increased to the absolute maximum | |
427 | */ | |
428 | *pmaxchanperscan = MRVDRV_CHANNELS_PER_SCAN_CMD; | |
429 | ||
430 | /* Initialize the scan as un-filtered by firmware, set to TRUE below if | |
431 | * a SSID or BSSID filter is sent in the command | |
432 | */ | |
433 | *pfilteredscan = 0; | |
434 | ||
435 | /* Initialize the scan as not being only on the current channel. If | |
436 | * the channel list is customized, only contains one channel, and | |
437 | * is the active channel, this is set true and data flow is not halted. | |
438 | */ | |
439 | *pscancurrentonly = 0; | |
440 | ||
441 | if (puserscanin) { | |
442 | ||
443 | /* Set the bss type scan filter, use adapter setting if unset */ | |
444 | pscancfgout->bsstype = | |
445 | (puserscanin->bsstype ? puserscanin->bsstype : adapter-> | |
446 | scanmode); | |
447 | ||
448 | /* Set the number of probes to send, use adapter setting if unset */ | |
449 | numprobes = (puserscanin->numprobes ? puserscanin->numprobes : | |
450 | adapter->scanprobes); | |
451 | ||
452 | /* | |
453 | * Set the BSSID filter to the incoming configuration, | |
454 | * if non-zero. If not set, it will remain disabled (all zeros). | |
455 | */ | |
eb8f7330 DW |
456 | memcpy(pscancfgout->bssid, puserscanin->bssid, |
457 | sizeof(pscancfgout->bssid)); | |
876c9d3a | 458 | |
eb8f7330 | 459 | if (puserscanin->ssid_len) { |
876c9d3a MT |
460 | pssidtlv = |
461 | (struct mrvlietypes_ssidparamset *) pscancfgout-> | |
462 | tlvbuffer; | |
463 | pssidtlv->header.type = cpu_to_le16(TLV_TYPE_SSID); | |
eb8f7330 DW |
464 | pssidtlv->header.len = cpu_to_le16(puserscanin->ssid_len); |
465 | memcpy(pssidtlv->ssid, puserscanin->ssid, | |
466 | puserscanin->ssid_len); | |
467 | ptlvpos += sizeof(pssidtlv->header) + puserscanin->ssid_len; | |
876c9d3a MT |
468 | } |
469 | ||
470 | /* | |
471 | * The default number of channels sent in the command is low to | |
472 | * ensure the response buffer from the firmware does not truncate | |
473 | * scan results. That is not an issue with an SSID or BSSID | |
474 | * filter applied to the scan results in the firmware. | |
475 | */ | |
eb8f7330 DW |
476 | if ( puserscanin->ssid_len |
477 | || (compare_ether_addr(pscancfgout->bssid, &zeromac[0]) != 0)) { | |
876c9d3a MT |
478 | *pmaxchanperscan = MRVDRV_MAX_CHANNELS_PER_SCAN; |
479 | *pfilteredscan = 1; | |
480 | } | |
481 | } else { | |
482 | pscancfgout->bsstype = adapter->scanmode; | |
483 | numprobes = adapter->scanprobes; | |
484 | } | |
485 | ||
486 | /* If the input config or adapter has the number of Probes set, add tlv */ | |
487 | if (numprobes) { | |
488 | pnumprobestlv = (struct mrvlietypes_numprobes *) ptlvpos; | |
981f187b DW |
489 | pnumprobestlv->header.type = cpu_to_le16(TLV_TYPE_NUMPROBES); |
490 | pnumprobestlv->header.len = cpu_to_le16(2); | |
876c9d3a MT |
491 | pnumprobestlv->numprobes = cpu_to_le16(numprobes); |
492 | ||
981f187b | 493 | ptlvpos += sizeof(*pnumprobestlv); |
876c9d3a MT |
494 | } |
495 | ||
496 | /* | |
497 | * Set the output for the channel TLV to the address in the tlv buffer | |
498 | * past any TLVs that were added in this fuction (SSID, numprobes). | |
499 | * channel TLVs will be added past this for each scan command, preserving | |
500 | * the TLVs that were previously added. | |
501 | */ | |
502 | *ppchantlvout = (struct mrvlietypes_chanlistparamset *) ptlvpos; | |
503 | ||
504 | if (puserscanin && puserscanin->chanlist[0].channumber) { | |
505 | ||
9012b28a | 506 | lbs_deb_scan("Scan: Using supplied channel list\n"); |
876c9d3a MT |
507 | |
508 | for (chanidx = 0; | |
509 | chanidx < WLAN_IOCTL_USER_SCAN_CHAN_MAX | |
510 | && puserscanin->chanlist[chanidx].channumber; chanidx++) { | |
511 | ||
512 | channel = puserscanin->chanlist[chanidx].channumber; | |
513 | (pscanchanlist + chanidx)->channumber = channel; | |
514 | ||
515 | radiotype = puserscanin->chanlist[chanidx].radiotype; | |
516 | (pscanchanlist + chanidx)->radiotype = radiotype; | |
517 | ||
518 | scantype = puserscanin->chanlist[chanidx].scantype; | |
519 | ||
520 | if (scantype == cmd_scan_type_passive) { | |
521 | (pscanchanlist + | |
522 | chanidx)->chanscanmode.passivescan = 1; | |
523 | } else { | |
524 | (pscanchanlist + | |
525 | chanidx)->chanscanmode.passivescan = 0; | |
526 | } | |
527 | ||
528 | if (puserscanin->chanlist[chanidx].scantime) { | |
529 | scandur = | |
530 | puserscanin->chanlist[chanidx].scantime; | |
531 | } else { | |
532 | if (scantype == cmd_scan_type_passive) { | |
533 | scandur = MRVDRV_PASSIVE_SCAN_CHAN_TIME; | |
534 | } else { | |
535 | scandur = MRVDRV_ACTIVE_SCAN_CHAN_TIME; | |
536 | } | |
537 | } | |
538 | ||
539 | (pscanchanlist + chanidx)->minscantime = | |
540 | cpu_to_le16(scandur); | |
541 | (pscanchanlist + chanidx)->maxscantime = | |
542 | cpu_to_le16(scandur); | |
543 | } | |
544 | ||
545 | /* Check if we are only scanning the current channel */ | |
546 | if ((chanidx == 1) && (puserscanin->chanlist[0].channumber | |
547 | == | |
548 | priv->adapter->curbssparams.channel)) { | |
549 | *pscancurrentonly = 1; | |
9012b28a | 550 | lbs_deb_scan("Scan: Scanning current channel only"); |
876c9d3a MT |
551 | } |
552 | ||
553 | } else { | |
9012b28a | 554 | lbs_deb_scan("Scan: Creating full region channel list\n"); |
876c9d3a MT |
555 | wlan_scan_create_channel_list(priv, pscanchanlist, |
556 | *pfilteredscan); | |
557 | } | |
558 | ||
559 | out: | |
560 | return pscancfgout; | |
561 | } | |
562 | ||
563 | /** | |
564 | * @brief Construct and send multiple scan config commands to the firmware | |
565 | * | |
566 | * Previous routines have created a wlan_scan_cmd_config with any requested | |
567 | * TLVs. This function splits the channel TLV into maxchanperscan lists | |
568 | * and sends the portion of the channel TLV along with the other TLVs | |
569 | * to the wlan_cmd routines for execution in the firmware. | |
570 | * | |
571 | * @param priv A pointer to wlan_private structure | |
572 | * @param maxchanperscan Maximum number channels to be included in each | |
573 | * scan command sent to firmware | |
574 | * @param filteredscan Flag indicating whether or not a BSSID or SSID | |
575 | * filter is being used for the firmware command | |
576 | * scan command sent to firmware | |
577 | * @param pscancfgout Scan configuration used for this scan. | |
578 | * @param pchantlvout Pointer in the pscancfgout where the channel TLV | |
579 | * should start. This is past any other TLVs that | |
580 | * must be sent down in each firmware command. | |
581 | * @param pscanchanlist List of channels to scan in maxchanperscan segments | |
582 | * | |
583 | * @return 0 or error return otherwise | |
584 | */ | |
585 | static int wlan_scan_channel_list(wlan_private * priv, | |
586 | int maxchanperscan, | |
587 | u8 filteredscan, | |
588 | struct wlan_scan_cmd_config * pscancfgout, | |
589 | struct mrvlietypes_chanlistparamset * pchantlvout, | |
064827ed | 590 | struct chanscanparamset * pscanchanlist, |
2be92196 MT |
591 | const struct wlan_ioctl_user_scan_cfg * puserscanin, |
592 | int full_scan) | |
876c9d3a MT |
593 | { |
594 | struct chanscanparamset *ptmpchan; | |
595 | struct chanscanparamset *pstartchan; | |
596 | u8 scanband; | |
597 | int doneearly; | |
598 | int tlvidx; | |
599 | int ret = 0; | |
064827ed MT |
600 | int scanned = 0; |
601 | union iwreq_data wrqu; | |
876c9d3a | 602 | |
9012b28a | 603 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a MT |
604 | |
605 | if (pscancfgout == 0 || pchantlvout == 0 || pscanchanlist == 0) { | |
9012b28a | 606 | lbs_deb_scan("Scan: Null detect: %p, %p, %p\n", |
876c9d3a MT |
607 | pscancfgout, pchantlvout, pscanchanlist); |
608 | return -1; | |
609 | } | |
610 | ||
611 | pchantlvout->header.type = cpu_to_le16(TLV_TYPE_CHANLIST); | |
612 | ||
613 | /* Set the temp channel struct pointer to the start of the desired list */ | |
614 | ptmpchan = pscanchanlist; | |
615 | ||
064827ed MT |
616 | if (priv->adapter->last_scanned_channel && !puserscanin) |
617 | ptmpchan += priv->adapter->last_scanned_channel; | |
618 | ||
876c9d3a MT |
619 | /* Loop through the desired channel list, sending a new firmware scan |
620 | * commands for each maxchanperscan channels (or for 1,6,11 individually | |
621 | * if configured accordingly) | |
622 | */ | |
623 | while (ptmpchan->channumber) { | |
624 | ||
625 | tlvidx = 0; | |
626 | pchantlvout->header.len = 0; | |
627 | scanband = ptmpchan->radiotype; | |
628 | pstartchan = ptmpchan; | |
629 | doneearly = 0; | |
630 | ||
631 | /* Construct the channel TLV for the scan command. Continue to | |
632 | * insert channel TLVs until: | |
633 | * - the tlvidx hits the maximum configured per scan command | |
634 | * - the next channel to insert is 0 (end of desired channel list) | |
635 | * - doneearly is set (controlling individual scanning of 1,6,11) | |
636 | */ | |
637 | while (tlvidx < maxchanperscan && ptmpchan->channumber | |
064827ed | 638 | && !doneearly && scanned < 2) { |
876c9d3a | 639 | |
9012b28a | 640 | lbs_deb_scan( |
876c9d3a MT |
641 | "Scan: Chan(%3d), Radio(%d), mode(%d,%d), Dur(%d)\n", |
642 | ptmpchan->channumber, ptmpchan->radiotype, | |
643 | ptmpchan->chanscanmode.passivescan, | |
644 | ptmpchan->chanscanmode.disablechanfilt, | |
645 | ptmpchan->maxscantime); | |
646 | ||
647 | /* Copy the current channel TLV to the command being prepared */ | |
648 | memcpy(pchantlvout->chanscanparam + tlvidx, | |
649 | ptmpchan, sizeof(pchantlvout->chanscanparam)); | |
650 | ||
651 | /* Increment the TLV header length by the size appended */ | |
981f187b DW |
652 | /* Ew, it would be _so_ nice if we could just declare the |
653 | variable little-endian and let GCC handle it for us */ | |
654 | pchantlvout->header.len = | |
655 | cpu_to_le16(le16_to_cpu(pchantlvout->header.len) + | |
656 | sizeof(pchantlvout->chanscanparam)); | |
876c9d3a MT |
657 | |
658 | /* | |
659 | * The tlv buffer length is set to the number of bytes of the | |
660 | * between the channel tlv pointer and the start of the | |
661 | * tlv buffer. This compensates for any TLVs that were appended | |
662 | * before the channel list. | |
663 | */ | |
664 | pscancfgout->tlvbufferlen = ((u8 *) pchantlvout | |
665 | - pscancfgout->tlvbuffer); | |
666 | ||
667 | /* Add the size of the channel tlv header and the data length */ | |
668 | pscancfgout->tlvbufferlen += | |
669 | (sizeof(pchantlvout->header) | |
981f187b | 670 | + le16_to_cpu(pchantlvout->header.len)); |
876c9d3a MT |
671 | |
672 | /* Increment the index to the channel tlv we are constructing */ | |
673 | tlvidx++; | |
674 | ||
675 | doneearly = 0; | |
676 | ||
677 | /* Stop the loop if the *current* channel is in the 1,6,11 set | |
678 | * and we are not filtering on a BSSID or SSID. | |
679 | */ | |
680 | if (!filteredscan && (ptmpchan->channumber == 1 | |
681 | || ptmpchan->channumber == 6 | |
682 | || ptmpchan->channumber == 11)) { | |
683 | doneearly = 1; | |
684 | } | |
685 | ||
686 | /* Increment the tmp pointer to the next channel to be scanned */ | |
687 | ptmpchan++; | |
064827ed | 688 | scanned++; |
876c9d3a MT |
689 | |
690 | /* Stop the loop if the *next* channel is in the 1,6,11 set. | |
691 | * This will cause it to be the only channel scanned on the next | |
692 | * interation | |
693 | */ | |
694 | if (!filteredscan && (ptmpchan->channumber == 1 | |
695 | || ptmpchan->channumber == 6 | |
696 | || ptmpchan->channumber == 11)) { | |
697 | doneearly = 1; | |
698 | } | |
699 | } | |
700 | ||
701 | /* Send the scan command to the firmware with the specified cfg */ | |
702 | ret = libertas_prepare_and_send_command(priv, cmd_802_11_scan, 0, | |
703 | 0, 0, pscancfgout); | |
2be92196 | 704 | if (scanned >= 2 && !full_scan) { |
9012b28a HS |
705 | ret = 0; |
706 | goto done; | |
064827ed | 707 | } |
2be92196 | 708 | scanned = 0; |
876c9d3a MT |
709 | } |
710 | ||
d9ad2f5d | 711 | done: |
064827ed MT |
712 | priv->adapter->last_scanned_channel = ptmpchan->channumber; |
713 | ||
d9ad2f5d | 714 | /* Tell userspace the scan table has been updated */ |
064827ed | 715 | memset(&wrqu, 0, sizeof(union iwreq_data)); |
634b8f49 | 716 | wireless_send_event(priv->dev, SIOCGIWSCAN, &wrqu, NULL); |
064827ed | 717 | |
9012b28a | 718 | lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); |
876c9d3a MT |
719 | return ret; |
720 | } | |
721 | ||
eb8f7330 DW |
722 | static void |
723 | clear_selected_scan_list_entries(wlan_adapter * adapter, | |
724 | const struct wlan_ioctl_user_scan_cfg * scan_cfg) | |
725 | { | |
726 | struct bss_descriptor * bss; | |
727 | struct bss_descriptor * safe; | |
728 | u32 clear_ssid_flag = 0, clear_bssid_flag = 0; | |
729 | ||
730 | if (!scan_cfg) | |
731 | return; | |
732 | ||
733 | if (scan_cfg->clear_ssid && scan_cfg->ssid_len) | |
734 | clear_ssid_flag = 1; | |
735 | ||
736 | if (scan_cfg->clear_bssid | |
737 | && (compare_ether_addr(scan_cfg->bssid, &zeromac[0]) != 0) | |
738 | && (compare_ether_addr(scan_cfg->bssid, &bcastmac[0]) != 0)) { | |
739 | clear_bssid_flag = 1; | |
740 | } | |
741 | ||
742 | if (!clear_ssid_flag && !clear_bssid_flag) | |
743 | return; | |
744 | ||
745 | mutex_lock(&adapter->lock); | |
746 | list_for_each_entry_safe (bss, safe, &adapter->network_list, list) { | |
747 | u32 clear = 0; | |
748 | ||
749 | /* Check for an SSID match */ | |
750 | if ( clear_ssid_flag | |
d8efea25 DW |
751 | && (bss->ssid_len == scan_cfg->ssid_len) |
752 | && !memcmp(bss->ssid, scan_cfg->ssid, bss->ssid_len)) | |
eb8f7330 DW |
753 | clear = 1; |
754 | ||
755 | /* Check for a BSSID match */ | |
756 | if ( clear_bssid_flag | |
757 | && !compare_ether_addr(bss->bssid, scan_cfg->bssid)) | |
758 | clear = 1; | |
759 | ||
760 | if (clear) { | |
761 | list_move_tail (&bss->list, &adapter->network_free_list); | |
762 | clear_bss_descriptor(bss); | |
763 | } | |
764 | } | |
765 | mutex_unlock(&adapter->lock); | |
766 | } | |
767 | ||
768 | ||
876c9d3a MT |
769 | /** |
770 | * @brief Internal function used to start a scan based on an input config | |
771 | * | |
772 | * Use the input user scan configuration information when provided in | |
773 | * order to send the appropriate scan commands to firmware to populate or | |
774 | * update the internal driver scan table | |
775 | * | |
776 | * @param priv A pointer to wlan_private structure | |
777 | * @param puserscanin Pointer to the input configuration for the requested | |
778 | * scan. | |
779 | * | |
780 | * @return 0 or < 0 if error | |
781 | */ | |
782 | int wlan_scan_networks(wlan_private * priv, | |
2be92196 MT |
783 | const struct wlan_ioctl_user_scan_cfg * puserscanin, |
784 | int full_scan) | |
876c9d3a | 785 | { |
eb8f7330 | 786 | wlan_adapter * adapter = priv->adapter; |
876c9d3a MT |
787 | struct mrvlietypes_chanlistparamset *pchantlvout; |
788 | struct chanscanparamset * scan_chan_list = NULL; | |
789 | struct wlan_scan_cmd_config * scan_cfg = NULL; | |
876c9d3a MT |
790 | u8 filteredscan; |
791 | u8 scancurrentchanonly; | |
792 | int maxchanperscan; | |
793 | int ret; | |
794 | ||
9012b28a | 795 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a MT |
796 | |
797 | scan_chan_list = kzalloc(sizeof(struct chanscanparamset) * | |
798 | WLAN_IOCTL_USER_SCAN_CHAN_MAX, GFP_KERNEL); | |
799 | if (scan_chan_list == NULL) { | |
800 | ret = -ENOMEM; | |
801 | goto out; | |
802 | } | |
803 | ||
804 | scan_cfg = wlan_scan_setup_scan_config(priv, | |
805 | puserscanin, | |
806 | &pchantlvout, | |
807 | scan_chan_list, | |
808 | &maxchanperscan, | |
809 | &filteredscan, | |
810 | &scancurrentchanonly); | |
811 | if (scan_cfg == NULL) { | |
812 | ret = -ENOMEM; | |
813 | goto out; | |
814 | } | |
815 | ||
eb8f7330 | 816 | clear_selected_scan_list_entries(adapter, puserscanin); |
876c9d3a MT |
817 | |
818 | /* Keep the data path active if we are only scanning our current channel */ | |
819 | if (!scancurrentchanonly) { | |
634b8f49 HS |
820 | netif_stop_queue(priv->dev); |
821 | netif_carrier_off(priv->dev); | |
51d84f50 JC |
822 | netif_stop_queue(priv->mesh_dev); |
823 | netif_carrier_off(priv->mesh_dev); | |
876c9d3a MT |
824 | } |
825 | ||
826 | ret = wlan_scan_channel_list(priv, | |
827 | maxchanperscan, | |
828 | filteredscan, | |
829 | scan_cfg, | |
830 | pchantlvout, | |
064827ed | 831 | scan_chan_list, |
2be92196 MT |
832 | puserscanin, |
833 | full_scan); | |
876c9d3a MT |
834 | |
835 | /* Process the resulting scan table: | |
836 | * - Remove any bad ssids | |
837 | * - Update our current BSS information from scan data | |
838 | */ | |
839 | wlan_scan_process_results(priv); | |
840 | ||
841 | if (priv->adapter->connect_status == libertas_connected) { | |
634b8f49 HS |
842 | netif_carrier_on(priv->dev); |
843 | netif_wake_queue(priv->dev); | |
51d84f50 JC |
844 | netif_carrier_on(priv->mesh_dev); |
845 | netif_wake_queue(priv->mesh_dev); | |
876c9d3a MT |
846 | } |
847 | ||
848 | out: | |
849 | if (scan_cfg) | |
850 | kfree(scan_cfg); | |
851 | ||
852 | if (scan_chan_list) | |
853 | kfree(scan_chan_list); | |
854 | ||
9012b28a | 855 | lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); |
876c9d3a MT |
856 | return ret; |
857 | } | |
858 | ||
859 | /** | |
860 | * @brief Inspect the scan response buffer for pointers to expected TLVs | |
861 | * | |
862 | * TLVs can be included at the end of the scan response BSS information. | |
863 | * Parse the data in the buffer for pointers to TLVs that can potentially | |
864 | * be passed back in the response | |
865 | * | |
866 | * @param ptlv Pointer to the start of the TLV buffer to parse | |
867 | * @param tlvbufsize size of the TLV buffer | |
868 | * @param ptsftlv Output parameter: Pointer to the TSF TLV if found | |
869 | * | |
870 | * @return void | |
871 | */ | |
872 | static | |
873 | void wlan_ret_802_11_scan_get_tlv_ptrs(struct mrvlietypes_data * ptlv, | |
874 | int tlvbufsize, | |
875 | struct mrvlietypes_tsftimestamp ** ptsftlv) | |
876 | { | |
877 | struct mrvlietypes_data *pcurrenttlv; | |
878 | int tlvbufleft; | |
879 | u16 tlvtype; | |
880 | u16 tlvlen; | |
881 | ||
882 | pcurrenttlv = ptlv; | |
883 | tlvbufleft = tlvbufsize; | |
884 | *ptsftlv = NULL; | |
885 | ||
9012b28a | 886 | lbs_deb_scan("SCAN_RESP: tlvbufsize = %d\n", tlvbufsize); |
876c9d3a MT |
887 | lbs_dbg_hex("SCAN_RESP: TLV Buf", (u8 *) ptlv, tlvbufsize); |
888 | ||
889 | while (tlvbufleft >= sizeof(struct mrvlietypesheader)) { | |
890 | tlvtype = le16_to_cpu(pcurrenttlv->header.type); | |
891 | tlvlen = le16_to_cpu(pcurrenttlv->header.len); | |
892 | ||
893 | switch (tlvtype) { | |
894 | case TLV_TYPE_TSFTIMESTAMP: | |
895 | *ptsftlv = (struct mrvlietypes_tsftimestamp *) pcurrenttlv; | |
896 | break; | |
897 | ||
898 | default: | |
9012b28a | 899 | lbs_deb_scan("SCAN_RESP: Unhandled TLV = %d\n", |
876c9d3a MT |
900 | tlvtype); |
901 | /* Give up, this seems corrupted */ | |
902 | return; | |
903 | } /* switch */ | |
904 | ||
905 | tlvbufleft -= (sizeof(ptlv->header) + tlvlen); | |
906 | pcurrenttlv = | |
907 | (struct mrvlietypes_data *) (pcurrenttlv->Data + tlvlen); | |
908 | } /* while */ | |
909 | } | |
910 | ||
911 | /** | |
912 | * @brief Interpret a BSS scan response returned from the firmware | |
913 | * | |
914 | * Parse the various fixed fields and IEs passed back for a a BSS probe | |
915 | * response or beacon from the scan command. Record information as needed | |
916 | * in the scan table struct bss_descriptor for that entry. | |
917 | * | |
fcdb53db | 918 | * @param bss Output parameter: Pointer to the BSS Entry |
876c9d3a MT |
919 | * |
920 | * @return 0 or -1 | |
921 | */ | |
fcdb53db DW |
922 | static int libertas_process_bss(struct bss_descriptor * bss, |
923 | u8 ** pbeaconinfo, int *bytesleft) | |
876c9d3a MT |
924 | { |
925 | enum ieeetypes_elementid elemID; | |
926 | struct ieeetypes_fhparamset *pFH; | |
927 | struct ieeetypes_dsparamset *pDS; | |
928 | struct ieeetypes_cfparamset *pCF; | |
929 | struct ieeetypes_ibssparamset *pibss; | |
930 | struct ieeetypes_capinfo *pcap; | |
931 | struct WLAN_802_11_FIXED_IEs fixedie; | |
932 | u8 *pcurrentptr; | |
933 | u8 *pRate; | |
934 | u8 elemlen; | |
935 | u8 bytestocopy; | |
936 | u8 ratesize; | |
937 | u16 beaconsize; | |
938 | u8 founddatarateie; | |
939 | int bytesleftforcurrentbeacon; | |
9012b28a | 940 | int ret; |
876c9d3a | 941 | |
876c9d3a MT |
942 | struct IE_WPA *pIe; |
943 | const u8 oui01[4] = { 0x00, 0x50, 0xf2, 0x01 }; | |
944 | ||
945 | struct ieeetypes_countryinfoset *pcountryinfo; | |
946 | ||
9012b28a | 947 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a MT |
948 | |
949 | founddatarateie = 0; | |
950 | ratesize = 0; | |
951 | beaconsize = 0; | |
952 | ||
953 | if (*bytesleft >= sizeof(beaconsize)) { | |
954 | /* Extract & convert beacon size from the command buffer */ | |
981f187b | 955 | beaconsize = le16_to_cpup((void *)*pbeaconinfo); |
876c9d3a MT |
956 | *bytesleft -= sizeof(beaconsize); |
957 | *pbeaconinfo += sizeof(beaconsize); | |
958 | } | |
959 | ||
960 | if (beaconsize == 0 || beaconsize > *bytesleft) { | |
961 | ||
962 | *pbeaconinfo += *bytesleft; | |
963 | *bytesleft = 0; | |
964 | ||
965 | return -1; | |
966 | } | |
967 | ||
968 | /* Initialize the current working beacon pointer for this BSS iteration */ | |
969 | pcurrentptr = *pbeaconinfo; | |
970 | ||
971 | /* Advance the return beacon pointer past the current beacon */ | |
972 | *pbeaconinfo += beaconsize; | |
973 | *bytesleft -= beaconsize; | |
974 | ||
975 | bytesleftforcurrentbeacon = beaconsize; | |
976 | ||
fcdb53db | 977 | memcpy(bss->bssid, pcurrentptr, ETH_ALEN); |
02eb229b | 978 | lbs_deb_scan("process_bss: AP BSSID " MAC_FMT "\n", MAC_ARG(bss->bssid)); |
876c9d3a MT |
979 | |
980 | pcurrentptr += ETH_ALEN; | |
981 | bytesleftforcurrentbeacon -= ETH_ALEN; | |
982 | ||
983 | if (bytesleftforcurrentbeacon < 12) { | |
fcdb53db | 984 | lbs_deb_scan("process_bss: Not enough bytes left\n"); |
876c9d3a MT |
985 | return -1; |
986 | } | |
987 | ||
988 | /* | |
989 | * next 4 fields are RSSI, time stamp, beacon interval, | |
990 | * and capability information | |
991 | */ | |
992 | ||
993 | /* RSSI is 1 byte long */ | |
981f187b | 994 | bss->rssi = *pcurrentptr; |
fcdb53db | 995 | lbs_deb_scan("process_bss: RSSI=%02X\n", *pcurrentptr); |
876c9d3a MT |
996 | pcurrentptr += 1; |
997 | bytesleftforcurrentbeacon -= 1; | |
998 | ||
999 | /* time stamp is 8 bytes long */ | |
981f187b | 1000 | fixedie.timestamp = bss->timestamp = le64_to_cpup((void *)pcurrentptr); |
876c9d3a MT |
1001 | pcurrentptr += 8; |
1002 | bytesleftforcurrentbeacon -= 8; | |
1003 | ||
1004 | /* beacon interval is 2 bytes long */ | |
981f187b | 1005 | fixedie.beaconinterval = bss->beaconperiod = le16_to_cpup((void *)pcurrentptr); |
876c9d3a MT |
1006 | pcurrentptr += 2; |
1007 | bytesleftforcurrentbeacon -= 2; | |
1008 | ||
1009 | /* capability information is 2 bytes long */ | |
981f187b | 1010 | memcpy(&fixedie.capabilities, pcurrentptr, 2); |
fcdb53db | 1011 | lbs_deb_scan("process_bss: fixedie.capabilities=0x%X\n", |
876c9d3a | 1012 | fixedie.capabilities); |
876c9d3a | 1013 | pcap = (struct ieeetypes_capinfo *) & fixedie.capabilities; |
fcdb53db | 1014 | memcpy(&bss->cap, pcap, sizeof(struct ieeetypes_capinfo)); |
876c9d3a MT |
1015 | pcurrentptr += 2; |
1016 | bytesleftforcurrentbeacon -= 2; | |
1017 | ||
1018 | /* rest of the current buffer are IE's */ | |
fcdb53db | 1019 | lbs_deb_scan("process_bss: IE length for this AP = %d\n", |
876c9d3a MT |
1020 | bytesleftforcurrentbeacon); |
1021 | ||
fcdb53db | 1022 | lbs_dbg_hex("process_bss: IE info", (u8 *) pcurrentptr, |
876c9d3a MT |
1023 | bytesleftforcurrentbeacon); |
1024 | ||
1025 | if (pcap->privacy) { | |
fcdb53db DW |
1026 | lbs_deb_scan("process_bss: AP WEP enabled\n"); |
1027 | bss->privacy = wlan802_11privfilter8021xWEP; | |
876c9d3a | 1028 | } else { |
fcdb53db | 1029 | bss->privacy = wlan802_11privfilteracceptall; |
876c9d3a MT |
1030 | } |
1031 | ||
1032 | if (pcap->ibss == 1) { | |
fcdb53db | 1033 | bss->mode = IW_MODE_ADHOC; |
876c9d3a | 1034 | } else { |
fcdb53db | 1035 | bss->mode = IW_MODE_INFRA; |
876c9d3a MT |
1036 | } |
1037 | ||
1038 | /* process variable IE */ | |
1039 | while (bytesleftforcurrentbeacon >= 2) { | |
1040 | elemID = (enum ieeetypes_elementid) (*((u8 *) pcurrentptr)); | |
1041 | elemlen = *((u8 *) pcurrentptr + 1); | |
1042 | ||
1043 | if (bytesleftforcurrentbeacon < elemlen) { | |
fcdb53db | 1044 | lbs_deb_scan("process_bss: error in processing IE, " |
876c9d3a MT |
1045 | "bytes left < IE length\n"); |
1046 | bytesleftforcurrentbeacon = 0; | |
1047 | continue; | |
1048 | } | |
1049 | ||
1050 | switch (elemID) { | |
876c9d3a | 1051 | case SSID: |
d8efea25 DW |
1052 | bss->ssid_len = elemlen; |
1053 | memcpy(bss->ssid, (pcurrentptr + 2), elemlen); | |
1054 | lbs_deb_scan("ssid '%s', ssid length %u\n", | |
1055 | escape_essid(bss->ssid, bss->ssid_len), | |
1056 | bss->ssid_len); | |
876c9d3a MT |
1057 | break; |
1058 | ||
1059 | case SUPPORTED_RATES: | |
fcdb53db DW |
1060 | memcpy(bss->datarates, (pcurrentptr + 2), elemlen); |
1061 | memmove(bss->libertas_supported_rates, (pcurrentptr + 2), | |
876c9d3a MT |
1062 | elemlen); |
1063 | ratesize = elemlen; | |
1064 | founddatarateie = 1; | |
1065 | break; | |
1066 | ||
1067 | case EXTRA_IE: | |
fcdb53db | 1068 | lbs_deb_scan("process_bss: EXTRA_IE Found!\n"); |
876c9d3a MT |
1069 | break; |
1070 | ||
1071 | case FH_PARAM_SET: | |
1072 | pFH = (struct ieeetypes_fhparamset *) pcurrentptr; | |
fcdb53db | 1073 | memmove(&bss->phyparamset.fhparamset, pFH, |
876c9d3a | 1074 | sizeof(struct ieeetypes_fhparamset)); |
981f187b | 1075 | #if 0 /* I think we can store these LE */ |
fcdb53db DW |
1076 | bss->phyparamset.fhparamset.dwelltime |
1077 | = le16_to_cpu(bss->phyparamset.fhparamset.dwelltime); | |
981f187b | 1078 | #endif |
876c9d3a MT |
1079 | break; |
1080 | ||
1081 | case DS_PARAM_SET: | |
1082 | pDS = (struct ieeetypes_dsparamset *) pcurrentptr; | |
fcdb53db DW |
1083 | bss->channel = pDS->currentchan; |
1084 | memcpy(&bss->phyparamset.dsparamset, pDS, | |
876c9d3a MT |
1085 | sizeof(struct ieeetypes_dsparamset)); |
1086 | break; | |
1087 | ||
1088 | case CF_PARAM_SET: | |
1089 | pCF = (struct ieeetypes_cfparamset *) pcurrentptr; | |
fcdb53db | 1090 | memcpy(&bss->ssparamset.cfparamset, pCF, |
876c9d3a MT |
1091 | sizeof(struct ieeetypes_cfparamset)); |
1092 | break; | |
1093 | ||
1094 | case IBSS_PARAM_SET: | |
1095 | pibss = (struct ieeetypes_ibssparamset *) pcurrentptr; | |
fcdb53db DW |
1096 | bss->atimwindow = le32_to_cpu(pibss->atimwindow); |
1097 | memmove(&bss->ssparamset.ibssparamset, pibss, | |
876c9d3a | 1098 | sizeof(struct ieeetypes_ibssparamset)); |
981f187b | 1099 | #if 0 |
fcdb53db DW |
1100 | bss->ssparamset.ibssparamset.atimwindow |
1101 | = le16_to_cpu(bss->ssparamset.ibssparamset.atimwindow); | |
981f187b | 1102 | #endif |
876c9d3a MT |
1103 | break; |
1104 | ||
1105 | /* Handle Country Info IE */ | |
1106 | case COUNTRY_INFO: | |
fcdb53db DW |
1107 | pcountryinfo = (struct ieeetypes_countryinfoset *) pcurrentptr; |
1108 | if (pcountryinfo->len < sizeof(pcountryinfo->countrycode) | |
876c9d3a | 1109 | || pcountryinfo->len > 254) { |
fcdb53db | 1110 | lbs_deb_scan("process_bss: 11D- Err " |
4269e2ad | 1111 | "CountryInfo len =%d min=%zd max=254\n", |
876c9d3a MT |
1112 | pcountryinfo->len, |
1113 | sizeof(pcountryinfo->countrycode)); | |
9012b28a HS |
1114 | ret = -1; |
1115 | goto done; | |
876c9d3a MT |
1116 | } |
1117 | ||
fcdb53db | 1118 | memcpy(&bss->countryinfo, |
876c9d3a | 1119 | pcountryinfo, pcountryinfo->len + 2); |
fcdb53db | 1120 | lbs_dbg_hex("process_bss: 11D- CountryInfo:", |
876c9d3a MT |
1121 | (u8 *) pcountryinfo, |
1122 | (u32) (pcountryinfo->len + 2)); | |
1123 | break; | |
1124 | ||
1125 | case EXTENDED_SUPPORTED_RATES: | |
1126 | /* | |
1127 | * only process extended supported rate | |
1128 | * if data rate is already found. | |
1129 | * data rate IE should come before | |
1130 | * extended supported rate IE | |
1131 | */ | |
1132 | if (founddatarateie) { | |
1133 | if ((elemlen + ratesize) > WLAN_SUPPORTED_RATES) { | |
1134 | bytestocopy = | |
1135 | (WLAN_SUPPORTED_RATES - ratesize); | |
1136 | } else { | |
1137 | bytestocopy = elemlen; | |
1138 | } | |
1139 | ||
fcdb53db | 1140 | pRate = (u8 *) bss->datarates; |
876c9d3a MT |
1141 | pRate += ratesize; |
1142 | memmove(pRate, (pcurrentptr + 2), bytestocopy); | |
fcdb53db | 1143 | pRate = (u8 *) bss->libertas_supported_rates; |
876c9d3a MT |
1144 | pRate += ratesize; |
1145 | memmove(pRate, (pcurrentptr + 2), bytestocopy); | |
1146 | } | |
1147 | break; | |
1148 | ||
1149 | case VENDOR_SPECIFIC_221: | |
1150 | #define IE_ID_LEN_FIELDS_BYTES 2 | |
1151 | pIe = (struct IE_WPA *)pcurrentptr; | |
1152 | ||
51b0c9d0 DW |
1153 | if (memcmp(pIe->oui, oui01, sizeof(oui01))) |
1154 | break; | |
1155 | ||
fcdb53db DW |
1156 | bss->wpa_ie_len = min(elemlen + IE_ID_LEN_FIELDS_BYTES, |
1157 | MAX_WPA_IE_LEN); | |
1158 | memcpy(bss->wpa_ie, pcurrentptr, bss->wpa_ie_len); | |
1159 | lbs_dbg_hex("process_bss: WPA IE", bss->wpa_ie, elemlen); | |
876c9d3a MT |
1160 | break; |
1161 | case WPA2_IE: | |
1162 | pIe = (struct IE_WPA *)pcurrentptr; | |
fcdb53db DW |
1163 | bss->rsn_ie_len = min(elemlen + IE_ID_LEN_FIELDS_BYTES, |
1164 | MAX_WPA_IE_LEN); | |
1165 | memcpy(bss->rsn_ie, pcurrentptr, bss->rsn_ie_len); | |
1166 | lbs_dbg_hex("process_bss: RSN_IE", bss->rsn_ie, elemlen); | |
876c9d3a MT |
1167 | break; |
1168 | case TIM: | |
1169 | break; | |
1170 | ||
1171 | case CHALLENGE_TEXT: | |
1172 | break; | |
1173 | } | |
1174 | ||
1175 | pcurrentptr += elemlen + 2; | |
1176 | ||
1177 | /* need to account for IE ID and IE len */ | |
1178 | bytesleftforcurrentbeacon -= (elemlen + 2); | |
1179 | ||
1180 | } /* while (bytesleftforcurrentbeacon > 2) */ | |
fcdb53db DW |
1181 | |
1182 | /* Timestamp */ | |
1183 | bss->last_scanned = jiffies; | |
1184 | ||
9012b28a | 1185 | ret = 0; |
876c9d3a | 1186 | |
9012b28a HS |
1187 | done: |
1188 | lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); | |
1189 | return ret; | |
876c9d3a MT |
1190 | } |
1191 | ||
1192 | /** | |
1193 | * @brief Compare two SSIDs | |
1194 | * | |
1195 | * @param ssid1 A pointer to ssid to compare | |
1196 | * @param ssid2 A pointer to ssid to compare | |
1197 | * | |
1198 | * @return 0--ssid is same, otherwise is different | |
1199 | */ | |
717c9339 | 1200 | int libertas_ssid_cmp(u8 *ssid1, u8 ssid1_len, u8 *ssid2, u8 ssid2_len) |
876c9d3a | 1201 | { |
d8efea25 | 1202 | if (ssid1_len != ssid2_len) |
876c9d3a MT |
1203 | return -1; |
1204 | ||
d8efea25 | 1205 | return memcmp(ssid1, ssid2, ssid1_len); |
876c9d3a MT |
1206 | } |
1207 | ||
1208 | /** | |
1209 | * @brief This function finds a specific compatible BSSID in the scan list | |
1210 | * | |
1211 | * @param adapter A pointer to wlan_adapter | |
1212 | * @param bssid BSSID to find in the scan list | |
1213 | * @param mode Network mode: Infrastructure or IBSS | |
1214 | * | |
1215 | * @return index in BSSID list, or error return code (< 0) | |
1216 | */ | |
717c9339 | 1217 | struct bss_descriptor * libertas_find_bssid_in_list(wlan_adapter * adapter, |
fcdb53db | 1218 | u8 * bssid, u8 mode) |
876c9d3a | 1219 | { |
fcdb53db DW |
1220 | struct bss_descriptor * iter_bss; |
1221 | struct bss_descriptor * found_bss = NULL; | |
876c9d3a MT |
1222 | |
1223 | if (!bssid) | |
fcdb53db | 1224 | return NULL; |
876c9d3a | 1225 | |
fcdb53db DW |
1226 | lbs_dbg_hex("libertas_find_BSSID_in_list: looking for ", |
1227 | bssid, ETH_ALEN); | |
876c9d3a | 1228 | |
fcdb53db DW |
1229 | /* Look through the scan table for a compatible match. The loop will |
1230 | * continue past a matched bssid that is not compatible in case there | |
1231 | * is an AP with multiple SSIDs assigned to the same BSSID | |
876c9d3a | 1232 | */ |
fcdb53db DW |
1233 | mutex_lock(&adapter->lock); |
1234 | list_for_each_entry (iter_bss, &adapter->network_list, list) { | |
3cf20931 | 1235 | if (compare_ether_addr(iter_bss->bssid, bssid)) |
fcdb53db DW |
1236 | continue; /* bssid doesn't match */ |
1237 | switch (mode) { | |
1238 | case IW_MODE_INFRA: | |
1239 | case IW_MODE_ADHOC: | |
1240 | if (!is_network_compatible(adapter, iter_bss, mode)) | |
876c9d3a | 1241 | break; |
fcdb53db DW |
1242 | found_bss = iter_bss; |
1243 | break; | |
1244 | default: | |
1245 | found_bss = iter_bss; | |
1246 | break; | |
876c9d3a MT |
1247 | } |
1248 | } | |
fcdb53db | 1249 | mutex_unlock(&adapter->lock); |
876c9d3a | 1250 | |
fcdb53db | 1251 | return found_bss; |
876c9d3a MT |
1252 | } |
1253 | ||
1254 | /** | |
1255 | * @brief This function finds ssid in ssid list. | |
1256 | * | |
1257 | * @param adapter A pointer to wlan_adapter | |
1258 | * @param ssid SSID to find in the list | |
1259 | * @param bssid BSSID to qualify the SSID selection (if provided) | |
1260 | * @param mode Network mode: Infrastructure or IBSS | |
1261 | * | |
1262 | * @return index in BSSID list | |
1263 | */ | |
717c9339 | 1264 | struct bss_descriptor * libertas_find_ssid_in_list(wlan_adapter * adapter, |
d8efea25 | 1265 | u8 *ssid, u8 ssid_len, u8 * bssid, u8 mode, |
aeea0ab4 | 1266 | int channel) |
876c9d3a | 1267 | { |
876c9d3a | 1268 | u8 bestrssi = 0; |
fcdb53db DW |
1269 | struct bss_descriptor * iter_bss = NULL; |
1270 | struct bss_descriptor * found_bss = NULL; | |
1271 | struct bss_descriptor * tmp_oldest = NULL; | |
876c9d3a | 1272 | |
fcdb53db DW |
1273 | mutex_lock(&adapter->lock); |
1274 | ||
1275 | list_for_each_entry (iter_bss, &adapter->network_list, list) { | |
1276 | if ( !tmp_oldest | |
1277 | || (iter_bss->last_scanned < tmp_oldest->last_scanned)) | |
1278 | tmp_oldest = iter_bss; | |
1279 | ||
717c9339 | 1280 | if (libertas_ssid_cmp(iter_bss->ssid, iter_bss->ssid_len, |
d8efea25 | 1281 | ssid, ssid_len) != 0) |
fcdb53db | 1282 | continue; /* ssid doesn't match */ |
3cf20931 | 1283 | if (bssid && compare_ether_addr(iter_bss->bssid, bssid) != 0) |
fcdb53db | 1284 | continue; /* bssid doesn't match */ |
aeea0ab4 DW |
1285 | if ((channel > 0) && (iter_bss->channel != channel)) |
1286 | continue; /* channel doesn't match */ | |
fcdb53db DW |
1287 | |
1288 | switch (mode) { | |
1289 | case IW_MODE_INFRA: | |
1290 | case IW_MODE_ADHOC: | |
1291 | if (!is_network_compatible(adapter, iter_bss, mode)) | |
876c9d3a | 1292 | break; |
fcdb53db DW |
1293 | |
1294 | if (bssid) { | |
1295 | /* Found requested BSSID */ | |
1296 | found_bss = iter_bss; | |
1297 | goto out; | |
1298 | } | |
1299 | ||
1300 | if (SCAN_RSSI(iter_bss->rssi) > bestrssi) { | |
1301 | bestrssi = SCAN_RSSI(iter_bss->rssi); | |
1302 | found_bss = iter_bss; | |
1303 | } | |
1304 | break; | |
1305 | case IW_MODE_AUTO: | |
1306 | default: | |
1307 | if (SCAN_RSSI(iter_bss->rssi) > bestrssi) { | |
1308 | bestrssi = SCAN_RSSI(iter_bss->rssi); | |
1309 | found_bss = iter_bss; | |
876c9d3a | 1310 | } |
fcdb53db | 1311 | break; |
876c9d3a MT |
1312 | } |
1313 | } | |
1314 | ||
fcdb53db DW |
1315 | out: |
1316 | mutex_unlock(&adapter->lock); | |
1317 | return found_bss; | |
876c9d3a MT |
1318 | } |
1319 | ||
1320 | /** | |
1321 | * @brief This function finds the best SSID in the Scan List | |
1322 | * | |
1323 | * Search the scan table for the best SSID that also matches the current | |
1324 | * adapter network preference (infrastructure or adhoc) | |
1325 | * | |
1326 | * @param adapter A pointer to wlan_adapter | |
1327 | * | |
1328 | * @return index in BSSID list | |
1329 | */ | |
717c9339 | 1330 | struct bss_descriptor * libertas_find_best_ssid_in_list(wlan_adapter * adapter, |
fcdb53db | 1331 | u8 mode) |
876c9d3a | 1332 | { |
876c9d3a | 1333 | u8 bestrssi = 0; |
fcdb53db DW |
1334 | struct bss_descriptor * iter_bss; |
1335 | struct bss_descriptor * best_bss = NULL; | |
876c9d3a | 1336 | |
fcdb53db | 1337 | mutex_lock(&adapter->lock); |
876c9d3a | 1338 | |
fcdb53db | 1339 | list_for_each_entry (iter_bss, &adapter->network_list, list) { |
876c9d3a | 1340 | switch (mode) { |
0dc5a290 DW |
1341 | case IW_MODE_INFRA: |
1342 | case IW_MODE_ADHOC: | |
fcdb53db DW |
1343 | if (!is_network_compatible(adapter, iter_bss, mode)) |
1344 | break; | |
1345 | if (SCAN_RSSI(iter_bss->rssi) <= bestrssi) | |
1346 | break; | |
1347 | bestrssi = SCAN_RSSI(iter_bss->rssi); | |
1348 | best_bss = iter_bss; | |
876c9d3a | 1349 | break; |
0dc5a290 | 1350 | case IW_MODE_AUTO: |
876c9d3a | 1351 | default: |
fcdb53db DW |
1352 | if (SCAN_RSSI(iter_bss->rssi) <= bestrssi) |
1353 | break; | |
1354 | bestrssi = SCAN_RSSI(iter_bss->rssi); | |
1355 | best_bss = iter_bss; | |
876c9d3a MT |
1356 | break; |
1357 | } | |
1358 | } | |
1359 | ||
fcdb53db DW |
1360 | mutex_unlock(&adapter->lock); |
1361 | return best_bss; | |
876c9d3a MT |
1362 | } |
1363 | ||
1364 | /** | |
1365 | * @brief Find the AP with specific ssid in the scan list | |
1366 | * | |
1367 | * @param priv A pointer to wlan_private structure | |
1368 | * @param pSSID A pointer to AP's ssid | |
1369 | * | |
1370 | * @return 0--success, otherwise--fail | |
1371 | */ | |
717c9339 | 1372 | int libertas_find_best_network_ssid(wlan_private * priv, |
d8efea25 | 1373 | u8 *out_ssid, u8 *out_ssid_len, u8 preferred_mode, u8 *out_mode) |
876c9d3a MT |
1374 | { |
1375 | wlan_adapter *adapter = priv->adapter; | |
fcdb53db DW |
1376 | int ret = -1; |
1377 | struct bss_descriptor * found; | |
876c9d3a | 1378 | |
9012b28a | 1379 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 1380 | |
2be92196 | 1381 | wlan_scan_networks(priv, NULL, 1); |
876c9d3a MT |
1382 | if (adapter->surpriseremoved) |
1383 | return -1; | |
876c9d3a | 1384 | |
fcdb53db | 1385 | wait_event_interruptible(adapter->cmd_pending, !adapter->nr_cmd_pending); |
876c9d3a | 1386 | |
717c9339 | 1387 | found = libertas_find_best_ssid_in_list(adapter, preferred_mode); |
d8efea25 DW |
1388 | if (found && (found->ssid_len > 0)) { |
1389 | memcpy(out_ssid, &found->ssid, IW_ESSID_MAX_SIZE); | |
1390 | *out_ssid_len = found->ssid_len; | |
fcdb53db DW |
1391 | *out_mode = found->mode; |
1392 | ret = 0; | |
876c9d3a MT |
1393 | } |
1394 | ||
9012b28a | 1395 | lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); |
876c9d3a MT |
1396 | return ret; |
1397 | } | |
1398 | ||
1399 | /** | |
1400 | * @brief Scan Network | |
1401 | * | |
1402 | * @param dev A pointer to net_device structure | |
1403 | * @param info A pointer to iw_request_info structure | |
1404 | * @param vwrq A pointer to iw_param structure | |
1405 | * @param extra A pointer to extra data buf | |
1406 | * | |
1407 | * @return 0 --success, otherwise fail | |
1408 | */ | |
1409 | int libertas_set_scan(struct net_device *dev, struct iw_request_info *info, | |
1410 | struct iw_param *vwrq, char *extra) | |
1411 | { | |
1412 | wlan_private *priv = dev->priv; | |
1413 | wlan_adapter *adapter = priv->adapter; | |
876c9d3a | 1414 | |
9012b28a | 1415 | lbs_deb_enter(LBS_DEB_SCAN); |
876c9d3a | 1416 | |
2be92196 | 1417 | wlan_scan_networks(priv, NULL, 0); |
876c9d3a MT |
1418 | |
1419 | if (adapter->surpriseremoved) | |
1420 | return -1; | |
1421 | ||
9012b28a | 1422 | lbs_deb_leave(LBS_DEB_SCAN); |
876c9d3a MT |
1423 | return 0; |
1424 | } | |
1425 | ||
1426 | /** | |
1427 | * @brief Send a scan command for all available channels filtered on a spec | |
1428 | * | |
1429 | * @param priv A pointer to wlan_private structure | |
1430 | * @param prequestedssid A pointer to AP's ssid | |
1431 | * @param keeppreviousscan Flag used to save/clear scan table before scan | |
1432 | * | |
1433 | * @return 0-success, otherwise fail | |
1434 | */ | |
717c9339 | 1435 | int libertas_send_specific_ssid_scan(wlan_private * priv, |
d8efea25 | 1436 | u8 *ssid, u8 ssid_len, u8 clear_ssid) |
876c9d3a MT |
1437 | { |
1438 | wlan_adapter *adapter = priv->adapter; | |
1439 | struct wlan_ioctl_user_scan_cfg scancfg; | |
eb8f7330 | 1440 | int ret = 0; |
876c9d3a | 1441 | |
9012b28a | 1442 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 1443 | |
d8efea25 | 1444 | if (!ssid_len) |
eb8f7330 | 1445 | goto out; |
876c9d3a MT |
1446 | |
1447 | memset(&scancfg, 0x00, sizeof(scancfg)); | |
d8efea25 DW |
1448 | memcpy(scancfg.ssid, ssid, ssid_len); |
1449 | scancfg.ssid_len = ssid_len; | |
eb8f7330 | 1450 | scancfg.clear_ssid = clear_ssid; |
876c9d3a | 1451 | |
2be92196 | 1452 | wlan_scan_networks(priv, &scancfg, 1); |
876c9d3a MT |
1453 | if (adapter->surpriseremoved) |
1454 | return -1; | |
1455 | wait_event_interruptible(adapter->cmd_pending, !adapter->nr_cmd_pending); | |
1456 | ||
eb8f7330 | 1457 | out: |
9012b28a | 1458 | lbs_deb_leave(LBS_DEB_ASSOC); |
eb8f7330 | 1459 | return ret; |
876c9d3a MT |
1460 | } |
1461 | ||
1462 | /** | |
1463 | * @brief scan an AP with specific BSSID | |
1464 | * | |
1465 | * @param priv A pointer to wlan_private structure | |
1466 | * @param bssid A pointer to AP's bssid | |
1467 | * @param keeppreviousscan Flag used to save/clear scan table before scan | |
1468 | * | |
1469 | * @return 0-success, otherwise fail | |
1470 | */ | |
717c9339 | 1471 | int libertas_send_specific_bssid_scan(wlan_private * priv, u8 * bssid, u8 clear_bssid) |
876c9d3a MT |
1472 | { |
1473 | struct wlan_ioctl_user_scan_cfg scancfg; | |
1474 | ||
9012b28a | 1475 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 1476 | |
eb8f7330 DW |
1477 | if (bssid == NULL) |
1478 | goto out; | |
876c9d3a MT |
1479 | |
1480 | memset(&scancfg, 0x00, sizeof(scancfg)); | |
eb8f7330 DW |
1481 | memcpy(scancfg.bssid, bssid, ETH_ALEN); |
1482 | scancfg.clear_bssid = clear_bssid; | |
876c9d3a | 1483 | |
2be92196 | 1484 | wlan_scan_networks(priv, &scancfg, 1); |
876c9d3a MT |
1485 | if (priv->adapter->surpriseremoved) |
1486 | return -1; | |
1487 | wait_event_interruptible(priv->adapter->cmd_pending, | |
1488 | !priv->adapter->nr_cmd_pending); | |
1489 | ||
eb8f7330 | 1490 | out: |
9012b28a | 1491 | lbs_deb_leave(LBS_DEB_ASSOC); |
876c9d3a MT |
1492 | return 0; |
1493 | } | |
1494 | ||
fcdb53db DW |
1495 | static inline char *libertas_translate_scan(wlan_private *priv, |
1496 | char *start, char *stop, | |
1497 | struct bss_descriptor *bss) | |
876c9d3a | 1498 | { |
876c9d3a | 1499 | wlan_adapter *adapter = priv->adapter; |
876c9d3a | 1500 | struct chan_freq_power *cfp; |
876c9d3a MT |
1501 | char *current_val; /* For rates */ |
1502 | struct iw_event iwe; /* Temporary buffer */ | |
876c9d3a | 1503 | int j; |
876c9d3a MT |
1504 | #define PERFECT_RSSI ((u8)50) |
1505 | #define WORST_RSSI ((u8)0) | |
1506 | #define RSSI_DIFF ((u8)(PERFECT_RSSI - WORST_RSSI)) | |
1507 | u8 rssi; | |
1508 | ||
fcdb53db DW |
1509 | cfp = libertas_find_cfp_by_band_and_channel(adapter, 0, bss->channel); |
1510 | if (!cfp) { | |
1511 | lbs_deb_scan("Invalid channel number %d\n", bss->channel); | |
1512 | return NULL; | |
2be92196 | 1513 | } |
876c9d3a | 1514 | |
fcdb53db DW |
1515 | /* First entry *MUST* be the AP BSSID */ |
1516 | iwe.cmd = SIOCGIWAP; | |
1517 | iwe.u.ap_addr.sa_family = ARPHRD_ETHER; | |
1518 | memcpy(iwe.u.ap_addr.sa_data, &bss->bssid, ETH_ALEN); | |
1519 | start = iwe_stream_add_event(start, stop, &iwe, IW_EV_ADDR_LEN); | |
1520 | ||
1521 | /* SSID */ | |
1522 | iwe.cmd = SIOCGIWESSID; | |
1523 | iwe.u.data.flags = 1; | |
d8efea25 DW |
1524 | iwe.u.data.length = min((u32) bss->ssid_len, (u32) IW_ESSID_MAX_SIZE); |
1525 | start = iwe_stream_add_point(start, stop, &iwe, bss->ssid); | |
fcdb53db DW |
1526 | |
1527 | /* Mode */ | |
1528 | iwe.cmd = SIOCGIWMODE; | |
1529 | iwe.u.mode = bss->mode; | |
1530 | start = iwe_stream_add_event(start, stop, &iwe, IW_EV_UINT_LEN); | |
1531 | ||
1532 | /* Frequency */ | |
1533 | iwe.cmd = SIOCGIWFREQ; | |
1534 | iwe.u.freq.m = (long)cfp->freq * 100000; | |
1535 | iwe.u.freq.e = 1; | |
1536 | start = iwe_stream_add_event(start, stop, &iwe, IW_EV_FREQ_LEN); | |
1537 | ||
1538 | /* Add quality statistics */ | |
1539 | iwe.cmd = IWEVQUAL; | |
1540 | iwe.u.qual.updated = IW_QUAL_ALL_UPDATED; | |
1541 | iwe.u.qual.level = SCAN_RSSI(bss->rssi); | |
1542 | ||
1543 | rssi = iwe.u.qual.level - MRVDRV_NF_DEFAULT_SCAN_VALUE; | |
1544 | iwe.u.qual.qual = | |
1545 | (100 * RSSI_DIFF * RSSI_DIFF - (PERFECT_RSSI - rssi) * | |
1546 | (15 * (RSSI_DIFF) + 62 * (PERFECT_RSSI - rssi))) / | |
1547 | (RSSI_DIFF * RSSI_DIFF); | |
1548 | if (iwe.u.qual.qual > 100) | |
1549 | iwe.u.qual.qual = 100; | |
1550 | ||
1551 | if (adapter->NF[TYPE_BEACON][TYPE_NOAVG] == 0) { | |
1552 | iwe.u.qual.noise = MRVDRV_NF_DEFAULT_SCAN_VALUE; | |
1553 | } else { | |
1554 | iwe.u.qual.noise = | |
1555 | CAL_NF(adapter->NF[TYPE_BEACON][TYPE_NOAVG]); | |
1556 | } | |
80e78ef7 DW |
1557 | |
1558 | /* Locally created ad-hoc BSSs won't have beacons if this is the | |
1559 | * only station in the adhoc network; so get signal strength | |
1560 | * from receive statistics. | |
1561 | */ | |
1562 | if ((adapter->mode == IW_MODE_ADHOC) | |
1563 | && adapter->adhoccreate | |
717c9339 | 1564 | && !libertas_ssid_cmp(adapter->curbssparams.ssid, |
d8efea25 DW |
1565 | adapter->curbssparams.ssid_len, |
1566 | bss->ssid, bss->ssid_len)) { | |
80e78ef7 DW |
1567 | int snr, nf; |
1568 | snr = adapter->SNR[TYPE_RXPD][TYPE_AVG] / AVG_SCALE; | |
1569 | nf = adapter->NF[TYPE_RXPD][TYPE_AVG] / AVG_SCALE; | |
1570 | iwe.u.qual.level = CAL_RSSI(snr, nf); | |
fcdb53db DW |
1571 | } |
1572 | start = iwe_stream_add_event(start, stop, &iwe, IW_EV_QUAL_LEN); | |
876c9d3a | 1573 | |
fcdb53db DW |
1574 | /* Add encryption capability */ |
1575 | iwe.cmd = SIOCGIWENCODE; | |
1576 | if (bss->privacy) { | |
1577 | iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY; | |
1578 | } else { | |
1579 | iwe.u.data.flags = IW_ENCODE_DISABLED; | |
1580 | } | |
1581 | iwe.u.data.length = 0; | |
d8efea25 | 1582 | start = iwe_stream_add_point(start, stop, &iwe, bss->ssid); |
876c9d3a | 1583 | |
fcdb53db | 1584 | current_val = start + IW_EV_LCP_LEN; |
876c9d3a | 1585 | |
fcdb53db DW |
1586 | iwe.cmd = SIOCGIWRATE; |
1587 | iwe.u.bitrate.fixed = 0; | |
1588 | iwe.u.bitrate.disabled = 0; | |
1589 | iwe.u.bitrate.value = 0; | |
876c9d3a | 1590 | |
fcdb53db DW |
1591 | for (j = 0; j < sizeof(bss->libertas_supported_rates); j++) { |
1592 | u8 rate = bss->libertas_supported_rates[j]; | |
1593 | if (rate == 0) | |
1594 | break; /* no more rates */ | |
1595 | /* Bit rate given in 500 kb/s units (+ 0x80) */ | |
1596 | iwe.u.bitrate.value = (rate & 0x7f) * 500000; | |
1597 | current_val = iwe_stream_add_value(start, current_val, | |
1598 | stop, &iwe, IW_EV_PARAM_LEN); | |
1599 | } | |
1600 | if ((bss->mode == IW_MODE_ADHOC) | |
717c9339 | 1601 | && !libertas_ssid_cmp(adapter->curbssparams.ssid, |
d8efea25 DW |
1602 | adapter->curbssparams.ssid_len, |
1603 | bss->ssid, bss->ssid_len) | |
fcdb53db DW |
1604 | && adapter->adhoccreate) { |
1605 | iwe.u.bitrate.value = 22 * 500000; | |
1606 | current_val = iwe_stream_add_value(start, current_val, | |
1607 | stop, &iwe, IW_EV_PARAM_LEN); | |
1608 | } | |
1609 | /* Check if we added any event */ | |
1610 | if((current_val - start) > IW_EV_LCP_LEN) | |
1611 | start = current_val; | |
1612 | ||
1613 | memset(&iwe, 0, sizeof(iwe)); | |
1614 | if (bss->wpa_ie_len) { | |
1615 | char buf[MAX_WPA_IE_LEN]; | |
1616 | memcpy(buf, bss->wpa_ie, bss->wpa_ie_len); | |
1617 | iwe.cmd = IWEVGENIE; | |
1618 | iwe.u.data.length = bss->wpa_ie_len; | |
1619 | start = iwe_stream_add_point(start, stop, &iwe, buf); | |
1620 | } | |
876c9d3a | 1621 | |
fcdb53db DW |
1622 | memset(&iwe, 0, sizeof(iwe)); |
1623 | if (bss->rsn_ie_len) { | |
1624 | char buf[MAX_WPA_IE_LEN]; | |
1625 | memcpy(buf, bss->rsn_ie, bss->rsn_ie_len); | |
1626 | iwe.cmd = IWEVGENIE; | |
1627 | iwe.u.data.length = bss->rsn_ie_len; | |
1628 | start = iwe_stream_add_point(start, stop, &iwe, buf); | |
1629 | } | |
876c9d3a | 1630 | |
fcdb53db DW |
1631 | return start; |
1632 | } | |
876c9d3a | 1633 | |
fcdb53db DW |
1634 | /** |
1635 | * @brief Retrieve the scan table entries via wireless tools IOCTL call | |
1636 | * | |
1637 | * @param dev A pointer to net_device structure | |
1638 | * @param info A pointer to iw_request_info structure | |
1639 | * @param dwrq A pointer to iw_point structure | |
1640 | * @param extra A pointer to extra data buf | |
1641 | * | |
1642 | * @return 0 --success, otherwise fail | |
1643 | */ | |
1644 | int libertas_get_scan(struct net_device *dev, struct iw_request_info *info, | |
1645 | struct iw_point *dwrq, char *extra) | |
1646 | { | |
1647 | #define SCAN_ITEM_SIZE 128 | |
1648 | wlan_private *priv = dev->priv; | |
1649 | wlan_adapter *adapter = priv->adapter; | |
1650 | int err = 0; | |
1651 | char *ev = extra; | |
1652 | char *stop = ev + dwrq->length; | |
1653 | struct bss_descriptor * iter_bss; | |
1654 | struct bss_descriptor * safe; | |
876c9d3a | 1655 | |
fcdb53db | 1656 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 1657 | |
fcdb53db DW |
1658 | /* If we've got an uncompleted scan, schedule the next part */ |
1659 | if (!adapter->nr_cmd_pending && adapter->last_scanned_channel) | |
1660 | wlan_scan_networks(priv, NULL, 0); | |
876c9d3a | 1661 | |
80e78ef7 | 1662 | /* Update RSSI if current BSS is a locally created ad-hoc BSS */ |
aeea0ab4 | 1663 | if ((adapter->mode == IW_MODE_ADHOC) && adapter->adhoccreate) { |
80e78ef7 DW |
1664 | libertas_prepare_and_send_command(priv, cmd_802_11_rssi, 0, |
1665 | cmd_option_waitforrsp, 0, NULL); | |
1666 | } | |
1667 | ||
fcdb53db DW |
1668 | mutex_lock(&adapter->lock); |
1669 | list_for_each_entry_safe (iter_bss, safe, &adapter->network_list, list) { | |
1670 | char * next_ev; | |
1671 | unsigned long stale_time; | |
876c9d3a | 1672 | |
fcdb53db DW |
1673 | if (stop - ev < SCAN_ITEM_SIZE) { |
1674 | err = -E2BIG; | |
1675 | break; | |
876c9d3a | 1676 | } |
876c9d3a | 1677 | |
fcdb53db DW |
1678 | /* Prune old an old scan result */ |
1679 | stale_time = iter_bss->last_scanned + DEFAULT_MAX_SCAN_AGE; | |
1680 | if (time_after(jiffies, stale_time)) { | |
1681 | list_move_tail (&iter_bss->list, | |
1682 | &adapter->network_free_list); | |
1683 | clear_bss_descriptor(iter_bss); | |
1684 | continue; | |
876c9d3a MT |
1685 | } |
1686 | ||
fcdb53db DW |
1687 | /* Translate to WE format this entry */ |
1688 | next_ev = libertas_translate_scan(priv, ev, stop, iter_bss); | |
1689 | if (next_ev == NULL) | |
1690 | continue; | |
1691 | ev = next_ev; | |
876c9d3a | 1692 | } |
fcdb53db | 1693 | mutex_unlock(&adapter->lock); |
876c9d3a | 1694 | |
fcdb53db | 1695 | dwrq->length = (ev - extra); |
876c9d3a MT |
1696 | dwrq->flags = 0; |
1697 | ||
9012b28a | 1698 | lbs_deb_leave(LBS_DEB_ASSOC); |
fcdb53db | 1699 | return err; |
876c9d3a MT |
1700 | } |
1701 | ||
1702 | /** | |
1703 | * @brief Prepare a scan command to be sent to the firmware | |
1704 | * | |
1705 | * Use the wlan_scan_cmd_config sent to the command processing module in | |
1706 | * the libertas_prepare_and_send_command to configure a cmd_ds_802_11_scan command | |
1707 | * struct to send to firmware. | |
1708 | * | |
1709 | * The fixed fields specifying the BSS type and BSSID filters as well as a | |
1710 | * variable number/length of TLVs are sent in the command to firmware. | |
1711 | * | |
1712 | * @param priv A pointer to wlan_private structure | |
1713 | * @param cmd A pointer to cmd_ds_command structure to be sent to | |
1714 | * firmware with the cmd_DS_801_11_SCAN structure | |
1715 | * @param pdata_buf Void pointer cast of a wlan_scan_cmd_config struct used | |
1716 | * to set the fields/TLVs for the command sent to firmware | |
1717 | * | |
1718 | * @return 0 or -1 | |
1719 | * | |
1720 | * @sa wlan_scan_create_channel_list | |
1721 | */ | |
1722 | int libertas_cmd_80211_scan(wlan_private * priv, | |
1723 | struct cmd_ds_command *cmd, void *pdata_buf) | |
1724 | { | |
1725 | struct cmd_ds_802_11_scan *pscan = &cmd->params.scan; | |
1726 | struct wlan_scan_cmd_config *pscancfg; | |
1727 | ||
9012b28a | 1728 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a MT |
1729 | |
1730 | pscancfg = pdata_buf; | |
1731 | ||
1732 | /* Set fixed field variables in scan command */ | |
1733 | pscan->bsstype = pscancfg->bsstype; | |
eb8f7330 | 1734 | memcpy(pscan->BSSID, pscancfg->bssid, sizeof(pscan->BSSID)); |
876c9d3a MT |
1735 | memcpy(pscan->tlvbuffer, pscancfg->tlvbuffer, pscancfg->tlvbufferlen); |
1736 | ||
1737 | cmd->command = cpu_to_le16(cmd_802_11_scan); | |
1738 | ||
1739 | /* size is equal to the sizeof(fixed portions) + the TLV len + header */ | |
1740 | cmd->size = cpu_to_le16(sizeof(pscan->bsstype) | |
1741 | + sizeof(pscan->BSSID) | |
1742 | + pscancfg->tlvbufferlen + S_DS_GEN); | |
1743 | ||
9012b28a | 1744 | lbs_deb_scan("SCAN_CMD: command=%x, size=%x, seqnum=%x\n", |
981f187b DW |
1745 | le16_to_cpu(cmd->command), le16_to_cpu(cmd->size), |
1746 | le16_to_cpu(cmd->seqnum)); | |
9012b28a HS |
1747 | |
1748 | lbs_deb_leave(LBS_DEB_ASSOC); | |
876c9d3a MT |
1749 | return 0; |
1750 | } | |
1751 | ||
fcdb53db DW |
1752 | static inline int is_same_network(struct bss_descriptor *src, |
1753 | struct bss_descriptor *dst) | |
1754 | { | |
1755 | /* A network is only a duplicate if the channel, BSSID, and ESSID | |
1756 | * all match. We treat all <hidden> with the same BSSID and channel | |
1757 | * as one network */ | |
d8efea25 | 1758 | return ((src->ssid_len == dst->ssid_len) && |
fcdb53db DW |
1759 | (src->channel == dst->channel) && |
1760 | !compare_ether_addr(src->bssid, dst->bssid) && | |
d8efea25 | 1761 | !memcmp(src->ssid, dst->ssid, src->ssid_len)); |
fcdb53db DW |
1762 | } |
1763 | ||
876c9d3a MT |
1764 | /** |
1765 | * @brief This function handles the command response of scan | |
1766 | * | |
1767 | * The response buffer for the scan command has the following | |
1768 | * memory layout: | |
1769 | * | |
1770 | * .-----------------------------------------------------------. | |
1771 | * | header (4 * sizeof(u16)): Standard command response hdr | | |
1772 | * .-----------------------------------------------------------. | |
1773 | * | bufsize (u16) : sizeof the BSS Description data | | |
1774 | * .-----------------------------------------------------------. | |
1775 | * | NumOfSet (u8) : Number of BSS Descs returned | | |
1776 | * .-----------------------------------------------------------. | |
1777 | * | BSSDescription data (variable, size given in bufsize) | | |
1778 | * .-----------------------------------------------------------. | |
1779 | * | TLV data (variable, size calculated using header->size, | | |
1780 | * | bufsize and sizeof the fixed fields above) | | |
1781 | * .-----------------------------------------------------------. | |
1782 | * | |
1783 | * @param priv A pointer to wlan_private structure | |
1784 | * @param resp A pointer to cmd_ds_command | |
1785 | * | |
1786 | * @return 0 or -1 | |
1787 | */ | |
1788 | int libertas_ret_80211_scan(wlan_private * priv, struct cmd_ds_command *resp) | |
1789 | { | |
1790 | wlan_adapter *adapter = priv->adapter; | |
1791 | struct cmd_ds_802_11_scan_rsp *pscan; | |
876c9d3a MT |
1792 | struct mrvlietypes_data *ptlv; |
1793 | struct mrvlietypes_tsftimestamp *ptsftlv; | |
fcdb53db DW |
1794 | struct bss_descriptor * iter_bss; |
1795 | struct bss_descriptor * safe; | |
876c9d3a MT |
1796 | u8 *pbssinfo; |
1797 | u16 scanrespsize; | |
1798 | int bytesleft; | |
876c9d3a MT |
1799 | int idx; |
1800 | int tlvbufsize; | |
9012b28a | 1801 | int ret; |
876c9d3a | 1802 | |
9012b28a | 1803 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 1804 | |
fcdb53db DW |
1805 | /* Prune old entries from scan table */ |
1806 | list_for_each_entry_safe (iter_bss, safe, &adapter->network_list, list) { | |
1807 | unsigned long stale_time = iter_bss->last_scanned + DEFAULT_MAX_SCAN_AGE; | |
1808 | if (time_before(jiffies, stale_time)) | |
1809 | continue; | |
1810 | list_move_tail (&iter_bss->list, &adapter->network_free_list); | |
1811 | clear_bss_descriptor(iter_bss); | |
1812 | } | |
1813 | ||
876c9d3a MT |
1814 | pscan = &resp->params.scanresp; |
1815 | ||
fcdb53db DW |
1816 | if (pscan->nr_sets > MAX_NETWORK_COUNT) { |
1817 | lbs_deb_scan( | |
1818 | "SCAN_RESP: too many scan results (%d, max %d)!!\n", | |
1819 | pscan->nr_sets, MAX_NETWORK_COUNT); | |
9012b28a HS |
1820 | ret = -1; |
1821 | goto done; | |
876c9d3a MT |
1822 | } |
1823 | ||
1824 | bytesleft = le16_to_cpu(pscan->bssdescriptsize); | |
9012b28a | 1825 | lbs_deb_scan("SCAN_RESP: bssdescriptsize %d\n", bytesleft); |
876c9d3a MT |
1826 | |
1827 | scanrespsize = le16_to_cpu(resp->size); | |
9012b28a | 1828 | lbs_deb_scan("SCAN_RESP: returned %d AP before parsing\n", |
876c9d3a MT |
1829 | pscan->nr_sets); |
1830 | ||
876c9d3a MT |
1831 | pbssinfo = pscan->bssdesc_and_tlvbuffer; |
1832 | ||
1833 | /* The size of the TLV buffer is equal to the entire command response | |
1834 | * size (scanrespsize) minus the fixed fields (sizeof()'s), the | |
1835 | * BSS Descriptions (bssdescriptsize as bytesLef) and the command | |
1836 | * response header (S_DS_GEN) | |
1837 | */ | |
1838 | tlvbufsize = scanrespsize - (bytesleft + sizeof(pscan->bssdescriptsize) | |
1839 | + sizeof(pscan->nr_sets) | |
1840 | + S_DS_GEN); | |
1841 | ||
1842 | ptlv = (struct mrvlietypes_data *) (pscan->bssdesc_and_tlvbuffer + bytesleft); | |
1843 | ||
1844 | /* Search the TLV buffer space in the scan response for any valid TLVs */ | |
1845 | wlan_ret_802_11_scan_get_tlv_ptrs(ptlv, tlvbufsize, &ptsftlv); | |
1846 | ||
1847 | /* | |
1848 | * Process each scan response returned (pscan->nr_sets). Save | |
1849 | * the information in the newbssentry and then insert into the | |
1850 | * driver scan table either as an update to an existing entry | |
1851 | * or as an addition at the end of the table | |
1852 | */ | |
1853 | for (idx = 0; idx < pscan->nr_sets && bytesleft; idx++) { | |
fcdb53db DW |
1854 | struct bss_descriptor new; |
1855 | struct bss_descriptor * found = NULL; | |
fcdb53db | 1856 | struct bss_descriptor * oldest = NULL; |
876c9d3a MT |
1857 | |
1858 | /* Process the data fields and IEs returned for this BSS */ | |
fcdb53db DW |
1859 | memset(&new, 0, sizeof (struct bss_descriptor)); |
1860 | if (libertas_process_bss(&new, &pbssinfo, &bytesleft) != 0) { | |
1861 | /* error parsing the scan response, skipped */ | |
1862 | lbs_deb_scan("SCAN_RESP: process_bss returned ERROR\n"); | |
1863 | continue; | |
1864 | } | |
876c9d3a | 1865 | |
fcdb53db DW |
1866 | /* Try to find this bss in the scan table */ |
1867 | list_for_each_entry (iter_bss, &adapter->network_list, list) { | |
1868 | if (is_same_network(iter_bss, &new)) { | |
1869 | found = iter_bss; | |
1870 | break; | |
876c9d3a MT |
1871 | } |
1872 | ||
fcdb53db DW |
1873 | if ((oldest == NULL) || |
1874 | (iter_bss->last_scanned < oldest->last_scanned)) | |
1875 | oldest = iter_bss; | |
1876 | } | |
876c9d3a | 1877 | |
fcdb53db DW |
1878 | if (found) { |
1879 | /* found, clear it */ | |
1880 | clear_bss_descriptor(found); | |
1881 | } else if (!list_empty(&adapter->network_free_list)) { | |
1882 | /* Pull one from the free list */ | |
1883 | found = list_entry(adapter->network_free_list.next, | |
1884 | struct bss_descriptor, list); | |
1885 | list_move_tail(&found->list, &adapter->network_list); | |
1886 | } else if (oldest) { | |
1887 | /* If there are no more slots, expire the oldest */ | |
1888 | found = oldest; | |
1889 | clear_bss_descriptor(found); | |
1890 | list_move_tail(&found->list, &adapter->network_list); | |
876c9d3a | 1891 | } else { |
fcdb53db DW |
1892 | continue; |
1893 | } | |
876c9d3a | 1894 | |
fcdb53db DW |
1895 | lbs_deb_scan("SCAN_RESP: BSSID = " MAC_FMT "\n", |
1896 | new.bssid[0], new.bssid[1], new.bssid[2], | |
1897 | new.bssid[3], new.bssid[4], new.bssid[5]); | |
1898 | ||
1899 | /* | |
1900 | * If the TSF TLV was appended to the scan results, save the | |
1901 | * this entries TSF value in the networktsf field. The | |
1902 | * networktsf is the firmware's TSF value at the time the | |
1903 | * beacon or probe response was received. | |
1904 | */ | |
1905 | if (ptsftlv) { | |
981f187b | 1906 | new.networktsf = le64_to_cpup(&ptsftlv->tsftable[idx]); |
876c9d3a | 1907 | } |
876c9d3a | 1908 | |
fcdb53db DW |
1909 | /* Copy the locally created newbssentry to the scan table */ |
1910 | memcpy(found, &new, offsetof(struct bss_descriptor, list)); | |
1911 | } | |
876c9d3a | 1912 | |
9012b28a | 1913 | ret = 0; |
876c9d3a | 1914 | |
9012b28a HS |
1915 | done: |
1916 | lbs_deb_leave_args(LBS_DEB_SCAN, "ret %d", ret); | |
1917 | return ret; | |
876c9d3a | 1918 | } |