Commit | Line | Data |
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876c9d3a MT |
1 | /* Copyright (C) 2006, Red Hat, Inc. */ |
2 | ||
3 | #include <linux/bitops.h> | |
4 | #include <net/ieee80211.h> | |
3cf20931 | 5 | #include <linux/etherdevice.h> |
876c9d3a MT |
6 | |
7 | #include "assoc.h" | |
8 | #include "join.h" | |
9 | #include "decl.h" | |
10 | #include "hostcmd.h" | |
11 | #include "host.h" | |
2dd4b262 | 12 | #include "cmd.h" |
876c9d3a MT |
13 | |
14 | ||
5a6e0434 IH |
15 | static const u8 bssid_any[ETH_ALEN] __attribute__ ((aligned (2))) = |
16 | { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; | |
17 | static const u8 bssid_off[ETH_ALEN] __attribute__ ((aligned (2))) = | |
18 | { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
876c9d3a | 19 | |
e76850d6 | 20 | |
69f9032d | 21 | static int assoc_helper_essid(struct lbs_private *priv, |
876c9d3a MT |
22 | struct assoc_request * assoc_req) |
23 | { | |
876c9d3a | 24 | int ret = 0; |
fcdb53db | 25 | struct bss_descriptor * bss; |
aeea0ab4 | 26 | int channel = -1; |
876c9d3a | 27 | |
9012b28a | 28 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 29 | |
ef9a264b DW |
30 | /* FIXME: take channel into account when picking SSIDs if a channel |
31 | * is set. | |
32 | */ | |
33 | ||
aeea0ab4 DW |
34 | if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) |
35 | channel = assoc_req->channel; | |
36 | ||
0765af44 | 37 | lbs_deb_assoc("SSID '%s' requested\n", |
d8efea25 | 38 | escape_essid(assoc_req->ssid, assoc_req->ssid_len)); |
0dc5a290 | 39 | if (assoc_req->mode == IW_MODE_INFRA) { |
10078321 | 40 | lbs_send_specific_ssid_scan(priv, assoc_req->ssid, |
6e22a855 | 41 | assoc_req->ssid_len, 0); |
876c9d3a | 42 | |
aa21c004 | 43 | bss = lbs_find_ssid_in_list(priv, assoc_req->ssid, |
d8efea25 | 44 | assoc_req->ssid_len, NULL, IW_MODE_INFRA, channel); |
fcdb53db | 45 | if (bss != NULL) { |
e76850d6 | 46 | memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor)); |
10078321 | 47 | ret = lbs_associate(priv, assoc_req); |
876c9d3a | 48 | } else { |
d8efea25 | 49 | lbs_deb_assoc("SSID not found; cannot associate\n"); |
876c9d3a | 50 | } |
0dc5a290 | 51 | } else if (assoc_req->mode == IW_MODE_ADHOC) { |
876c9d3a MT |
52 | /* Scan for the network, do not save previous results. Stale |
53 | * scan data will cause us to join a non-existant adhoc network | |
54 | */ | |
10078321 | 55 | lbs_send_specific_ssid_scan(priv, assoc_req->ssid, |
d8efea25 | 56 | assoc_req->ssid_len, 1); |
876c9d3a MT |
57 | |
58 | /* Search for the requested SSID in the scan table */ | |
aa21c004 | 59 | bss = lbs_find_ssid_in_list(priv, assoc_req->ssid, |
d8efea25 | 60 | assoc_req->ssid_len, NULL, IW_MODE_ADHOC, channel); |
fcdb53db | 61 | if (bss != NULL) { |
d8efea25 | 62 | lbs_deb_assoc("SSID found, will join\n"); |
e76850d6 | 63 | memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor)); |
10078321 | 64 | lbs_join_adhoc_network(priv, assoc_req); |
876c9d3a MT |
65 | } else { |
66 | /* else send START command */ | |
d8efea25 | 67 | lbs_deb_assoc("SSID not found, creating adhoc network\n"); |
e76850d6 | 68 | memcpy(&assoc_req->bss.ssid, &assoc_req->ssid, |
d8efea25 DW |
69 | IW_ESSID_MAX_SIZE); |
70 | assoc_req->bss.ssid_len = assoc_req->ssid_len; | |
10078321 | 71 | lbs_start_adhoc_network(priv, assoc_req); |
876c9d3a | 72 | } |
876c9d3a MT |
73 | } |
74 | ||
9012b28a | 75 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
876c9d3a MT |
76 | return ret; |
77 | } | |
78 | ||
79 | ||
69f9032d | 80 | static int assoc_helper_bssid(struct lbs_private *priv, |
876c9d3a MT |
81 | struct assoc_request * assoc_req) |
82 | { | |
fcdb53db DW |
83 | int ret = 0; |
84 | struct bss_descriptor * bss; | |
0795af57 | 85 | DECLARE_MAC_BUF(mac); |
876c9d3a | 86 | |
0795af57 JP |
87 | lbs_deb_enter_args(LBS_DEB_ASSOC, "BSSID %s", |
88 | print_mac(mac, assoc_req->bssid)); | |
876c9d3a MT |
89 | |
90 | /* Search for index position in list for requested MAC */ | |
aa21c004 | 91 | bss = lbs_find_bssid_in_list(priv, assoc_req->bssid, |
876c9d3a | 92 | assoc_req->mode); |
fcdb53db | 93 | if (bss == NULL) { |
0795af57 JP |
94 | lbs_deb_assoc("ASSOC: WAP: BSSID %s not found, " |
95 | "cannot associate.\n", print_mac(mac, assoc_req->bssid)); | |
876c9d3a MT |
96 | goto out; |
97 | } | |
98 | ||
e76850d6 | 99 | memcpy(&assoc_req->bss, bss, sizeof(struct bss_descriptor)); |
0dc5a290 | 100 | if (assoc_req->mode == IW_MODE_INFRA) { |
10078321 HS |
101 | ret = lbs_associate(priv, assoc_req); |
102 | lbs_deb_assoc("ASSOC: lbs_associate(bssid) returned %d\n", ret); | |
0dc5a290 | 103 | } else if (assoc_req->mode == IW_MODE_ADHOC) { |
10078321 | 104 | lbs_join_adhoc_network(priv, assoc_req); |
876c9d3a | 105 | } |
876c9d3a MT |
106 | |
107 | out: | |
9012b28a | 108 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
876c9d3a MT |
109 | return ret; |
110 | } | |
111 | ||
112 | ||
69f9032d | 113 | static int assoc_helper_associate(struct lbs_private *priv, |
876c9d3a MT |
114 | struct assoc_request * assoc_req) |
115 | { | |
116 | int ret = 0, done = 0; | |
117 | ||
0765af44 HS |
118 | lbs_deb_enter(LBS_DEB_ASSOC); |
119 | ||
876c9d3a MT |
120 | /* If we're given and 'any' BSSID, try associating based on SSID */ |
121 | ||
122 | if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) { | |
3cf20931 DW |
123 | if (compare_ether_addr(bssid_any, assoc_req->bssid) |
124 | && compare_ether_addr(bssid_off, assoc_req->bssid)) { | |
876c9d3a MT |
125 | ret = assoc_helper_bssid(priv, assoc_req); |
126 | done = 1; | |
876c9d3a MT |
127 | } |
128 | } | |
129 | ||
130 | if (!done && test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) { | |
131 | ret = assoc_helper_essid(priv, assoc_req); | |
876c9d3a MT |
132 | } |
133 | ||
0765af44 | 134 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
876c9d3a MT |
135 | return ret; |
136 | } | |
137 | ||
138 | ||
69f9032d | 139 | static int assoc_helper_mode(struct lbs_private *priv, |
876c9d3a MT |
140 | struct assoc_request * assoc_req) |
141 | { | |
876c9d3a MT |
142 | int ret = 0; |
143 | ||
9012b28a | 144 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 145 | |
aa21c004 | 146 | if (assoc_req->mode == priv->mode) |
9012b28a | 147 | goto done; |
876c9d3a | 148 | |
0dc5a290 | 149 | if (assoc_req->mode == IW_MODE_INFRA) { |
aa21c004 | 150 | if (priv->psstate != PS_STATE_FULL_POWER) |
10078321 | 151 | lbs_ps_wakeup(priv, CMD_OPTION_WAITFORRSP); |
aa21c004 | 152 | priv->psmode = LBS802_11POWERMODECAM; |
876c9d3a MT |
153 | } |
154 | ||
aa21c004 | 155 | priv->mode = assoc_req->mode; |
10078321 | 156 | ret = lbs_prepare_and_send_command(priv, |
0aef64d7 DW |
157 | CMD_802_11_SNMP_MIB, |
158 | 0, CMD_OPTION_WAITFORRSP, | |
876c9d3a | 159 | OID_802_11_INFRASTRUCTURE_MODE, |
981f187b | 160 | /* Shoot me now */ (void *) (size_t) assoc_req->mode); |
876c9d3a | 161 | |
9012b28a HS |
162 | done: |
163 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); | |
876c9d3a MT |
164 | return ret; |
165 | } | |
166 | ||
167 | ||
9f462577 | 168 | int lbs_update_channel(struct lbs_private *priv) |
ef9a264b | 169 | { |
0765af44 | 170 | int ret; |
2dd4b262 | 171 | |
d1a469fd | 172 | /* the channel in f/w could be out of sync; get the current channel */ |
0765af44 | 173 | lbs_deb_enter(LBS_DEB_ASSOC); |
2dd4b262 DW |
174 | |
175 | ret = lbs_get_channel(priv); | |
d1a469fd DW |
176 | if (ret > 0) { |
177 | priv->curbssparams.channel = ret; | |
178 | ret = 0; | |
179 | } | |
0765af44 HS |
180 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
181 | return ret; | |
ef9a264b DW |
182 | } |
183 | ||
10078321 | 184 | void lbs_sync_channel(struct work_struct *work) |
b8bedefd | 185 | { |
69f9032d HS |
186 | struct lbs_private *priv = container_of(work, struct lbs_private, |
187 | sync_channel); | |
b8bedefd | 188 | |
0765af44 | 189 | lbs_deb_enter(LBS_DEB_ASSOC); |
9f462577 | 190 | if (lbs_update_channel(priv)) |
b8bedefd | 191 | lbs_pr_info("Channel synchronization failed."); |
0765af44 | 192 | lbs_deb_leave(LBS_DEB_ASSOC); |
b8bedefd LCCR |
193 | } |
194 | ||
69f9032d | 195 | static int assoc_helper_channel(struct lbs_private *priv, |
ef9a264b DW |
196 | struct assoc_request * assoc_req) |
197 | { | |
ef9a264b DW |
198 | int ret = 0; |
199 | ||
200 | lbs_deb_enter(LBS_DEB_ASSOC); | |
201 | ||
9f462577 | 202 | ret = lbs_update_channel(priv); |
d1a469fd | 203 | if (ret) { |
23d36eec | 204 | lbs_deb_assoc("ASSOC: channel: error getting channel.\n"); |
d1a469fd | 205 | goto done; |
ef9a264b DW |
206 | } |
207 | ||
aa21c004 | 208 | if (assoc_req->channel == priv->curbssparams.channel) |
ef9a264b DW |
209 | goto done; |
210 | ||
8642f1f0 | 211 | if (priv->mesh_dev) { |
86062134 DW |
212 | /* Change mesh channel first; 21.p21 firmware won't let |
213 | you change channel otherwise (even though it'll return | |
214 | an error to this */ | |
215 | lbs_mesh_config(priv, 0, assoc_req->channel); | |
8642f1f0 DW |
216 | } |
217 | ||
ef9a264b | 218 | lbs_deb_assoc("ASSOC: channel: %d -> %d\n", |
86062134 | 219 | priv->curbssparams.channel, assoc_req->channel); |
ef9a264b | 220 | |
2dd4b262 DW |
221 | ret = lbs_set_channel(priv, assoc_req->channel); |
222 | if (ret < 0) | |
23d36eec | 223 | lbs_deb_assoc("ASSOC: channel: error setting channel.\n"); |
ef9a264b | 224 | |
2dd4b262 DW |
225 | /* FIXME: shouldn't need to grab the channel _again_ after setting |
226 | * it since the firmware is supposed to return the new channel, but | |
227 | * whatever... */ | |
9f462577 | 228 | ret = lbs_update_channel(priv); |
d1a469fd | 229 | if (ret) { |
23d36eec | 230 | lbs_deb_assoc("ASSOC: channel: error getting channel.\n"); |
d1a469fd DW |
231 | goto done; |
232 | } | |
ef9a264b | 233 | |
aa21c004 | 234 | if (assoc_req->channel != priv->curbssparams.channel) { |
88ae2915 | 235 | lbs_deb_assoc("ASSOC: channel: failed to update channel to %d\n", |
ef9a264b | 236 | assoc_req->channel); |
8642f1f0 | 237 | goto restore_mesh; |
ef9a264b DW |
238 | } |
239 | ||
240 | if ( assoc_req->secinfo.wep_enabled | |
241 | && (assoc_req->wep_keys[0].len | |
242 | || assoc_req->wep_keys[1].len | |
243 | || assoc_req->wep_keys[2].len | |
244 | || assoc_req->wep_keys[3].len)) { | |
245 | /* Make sure WEP keys are re-sent to firmware */ | |
246 | set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags); | |
247 | } | |
248 | ||
249 | /* Must restart/rejoin adhoc networks after channel change */ | |
23d36eec | 250 | set_bit(ASSOC_FLAG_SSID, &assoc_req->flags); |
ef9a264b | 251 | |
8642f1f0 DW |
252 | restore_mesh: |
253 | if (priv->mesh_dev) | |
86062134 | 254 | lbs_mesh_config(priv, 1, priv->curbssparams.channel); |
8642f1f0 DW |
255 | |
256 | done: | |
ef9a264b DW |
257 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
258 | return ret; | |
259 | } | |
260 | ||
261 | ||
69f9032d | 262 | static int assoc_helper_wep_keys(struct lbs_private *priv, |
f70dd451 | 263 | struct assoc_request *assoc_req) |
876c9d3a | 264 | { |
876c9d3a MT |
265 | int i; |
266 | int ret = 0; | |
267 | ||
9012b28a | 268 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a MT |
269 | |
270 | /* Set or remove WEP keys */ | |
f70dd451 DW |
271 | if (assoc_req->wep_keys[0].len || assoc_req->wep_keys[1].len || |
272 | assoc_req->wep_keys[2].len || assoc_req->wep_keys[3].len) | |
273 | ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_ADD, assoc_req); | |
274 | else | |
275 | ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_REMOVE, assoc_req); | |
876c9d3a MT |
276 | |
277 | if (ret) | |
278 | goto out; | |
279 | ||
280 | /* enable/disable the MAC's WEP packet filter */ | |
889c05bd | 281 | if (assoc_req->secinfo.wep_enabled) |
aa21c004 | 282 | priv->currentpacketfilter |= CMD_ACT_MAC_WEP_ENABLE; |
876c9d3a | 283 | else |
aa21c004 | 284 | priv->currentpacketfilter &= ~CMD_ACT_MAC_WEP_ENABLE; |
f70dd451 | 285 | |
10078321 | 286 | ret = lbs_set_mac_packet_filter(priv); |
876c9d3a MT |
287 | if (ret) |
288 | goto out; | |
289 | ||
aa21c004 | 290 | mutex_lock(&priv->lock); |
876c9d3a | 291 | |
aa21c004 | 292 | /* Copy WEP keys into priv wep key fields */ |
876c9d3a | 293 | for (i = 0; i < 4; i++) { |
aa21c004 | 294 | memcpy(&priv->wep_keys[i], &assoc_req->wep_keys[i], |
f70dd451 | 295 | sizeof(struct enc_key)); |
876c9d3a | 296 | } |
aa21c004 | 297 | priv->wep_tx_keyidx = assoc_req->wep_tx_keyidx; |
876c9d3a | 298 | |
aa21c004 | 299 | mutex_unlock(&priv->lock); |
876c9d3a MT |
300 | |
301 | out: | |
9012b28a | 302 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
876c9d3a MT |
303 | return ret; |
304 | } | |
305 | ||
69f9032d | 306 | static int assoc_helper_secinfo(struct lbs_private *priv, |
876c9d3a MT |
307 | struct assoc_request * assoc_req) |
308 | { | |
876c9d3a | 309 | int ret = 0; |
4f59abf1 DW |
310 | uint16_t do_wpa; |
311 | uint16_t rsn = 0; | |
876c9d3a | 312 | |
9012b28a | 313 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 314 | |
aa21c004 | 315 | memcpy(&priv->secinfo, &assoc_req->secinfo, |
10078321 | 316 | sizeof(struct lbs_802_11_security)); |
876c9d3a | 317 | |
10078321 | 318 | ret = lbs_set_mac_packet_filter(priv); |
90a42210 DW |
319 | if (ret) |
320 | goto out; | |
876c9d3a | 321 | |
18c96c34 DW |
322 | /* If RSN is already enabled, don't try to enable it again, since |
323 | * ENABLE_RSN resets internal state machines and will clobber the | |
324 | * 4-way WPA handshake. | |
325 | */ | |
326 | ||
327 | /* Get RSN enabled/disabled */ | |
4f59abf1 | 328 | ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_GET, &rsn); |
18c96c34 | 329 | if (ret) { |
23d36eec | 330 | lbs_deb_assoc("Failed to get RSN status: %d\n", ret); |
18c96c34 DW |
331 | goto out; |
332 | } | |
333 | ||
334 | /* Don't re-enable RSN if it's already enabled */ | |
4f59abf1 | 335 | do_wpa = assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled; |
18c96c34 DW |
336 | if (do_wpa == rsn) |
337 | goto out; | |
338 | ||
339 | /* Set RSN enabled/disabled */ | |
4f59abf1 | 340 | ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_SET, &do_wpa); |
90a42210 DW |
341 | |
342 | out: | |
9012b28a | 343 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
876c9d3a MT |
344 | return ret; |
345 | } | |
346 | ||
347 | ||
69f9032d | 348 | static int assoc_helper_wpa_keys(struct lbs_private *priv, |
876c9d3a MT |
349 | struct assoc_request * assoc_req) |
350 | { | |
351 | int ret = 0; | |
2bcde51d | 352 | unsigned int flags = assoc_req->flags; |
876c9d3a | 353 | |
9012b28a | 354 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 355 | |
2bcde51d DW |
356 | /* Work around older firmware bug where WPA unicast and multicast |
357 | * keys must be set independently. Seen in SDIO parts with firmware | |
358 | * version 5.0.11p0. | |
359 | */ | |
876c9d3a | 360 | |
2bcde51d DW |
361 | if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) { |
362 | clear_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags); | |
10078321 | 363 | ret = lbs_prepare_and_send_command(priv, |
2bcde51d DW |
364 | CMD_802_11_KEY_MATERIAL, |
365 | CMD_ACT_SET, | |
366 | CMD_OPTION_WAITFORRSP, | |
367 | 0, assoc_req); | |
368 | assoc_req->flags = flags; | |
369 | } | |
370 | ||
371 | if (ret) | |
372 | goto out; | |
373 | ||
374 | if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) { | |
375 | clear_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags); | |
376 | ||
10078321 | 377 | ret = lbs_prepare_and_send_command(priv, |
2bcde51d DW |
378 | CMD_802_11_KEY_MATERIAL, |
379 | CMD_ACT_SET, | |
380 | CMD_OPTION_WAITFORRSP, | |
381 | 0, assoc_req); | |
382 | assoc_req->flags = flags; | |
383 | } | |
384 | ||
385 | out: | |
9012b28a | 386 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
876c9d3a MT |
387 | return ret; |
388 | } | |
389 | ||
390 | ||
69f9032d | 391 | static int assoc_helper_wpa_ie(struct lbs_private *priv, |
876c9d3a MT |
392 | struct assoc_request * assoc_req) |
393 | { | |
876c9d3a MT |
394 | int ret = 0; |
395 | ||
9012b28a | 396 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a MT |
397 | |
398 | if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) { | |
aa21c004 DW |
399 | memcpy(&priv->wpa_ie, &assoc_req->wpa_ie, assoc_req->wpa_ie_len); |
400 | priv->wpa_ie_len = assoc_req->wpa_ie_len; | |
876c9d3a | 401 | } else { |
aa21c004 DW |
402 | memset(&priv->wpa_ie, 0, MAX_WPA_IE_LEN); |
403 | priv->wpa_ie_len = 0; | |
876c9d3a MT |
404 | } |
405 | ||
9012b28a | 406 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
876c9d3a MT |
407 | return ret; |
408 | } | |
409 | ||
410 | ||
aa21c004 | 411 | static int should_deauth_infrastructure(struct lbs_private *priv, |
876c9d3a MT |
412 | struct assoc_request * assoc_req) |
413 | { | |
0765af44 HS |
414 | int ret = 0; |
415 | ||
416 | lbs_deb_enter(LBS_DEB_ASSOC); | |
417 | ||
aa21c004 | 418 | if (priv->connect_status != LBS_CONNECTED) |
876c9d3a MT |
419 | return 0; |
420 | ||
421 | if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) { | |
0765af44 HS |
422 | lbs_deb_assoc("Deauthenticating due to new SSID\n"); |
423 | ret = 1; | |
424 | goto out; | |
876c9d3a MT |
425 | } |
426 | ||
427 | if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) { | |
aa21c004 | 428 | if (priv->secinfo.auth_mode != assoc_req->secinfo.auth_mode) { |
0765af44 HS |
429 | lbs_deb_assoc("Deauthenticating due to new security\n"); |
430 | ret = 1; | |
431 | goto out; | |
876c9d3a MT |
432 | } |
433 | } | |
434 | ||
435 | if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) { | |
0765af44 HS |
436 | lbs_deb_assoc("Deauthenticating due to new BSSID\n"); |
437 | ret = 1; | |
438 | goto out; | |
876c9d3a MT |
439 | } |
440 | ||
fff47f10 | 441 | if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) { |
0765af44 HS |
442 | lbs_deb_assoc("Deauthenticating due to channel switch\n"); |
443 | ret = 1; | |
444 | goto out; | |
fff47f10 LCCR |
445 | } |
446 | ||
876c9d3a MT |
447 | /* FIXME: deal with 'auto' mode somehow */ |
448 | if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) { | |
0765af44 HS |
449 | if (assoc_req->mode != IW_MODE_INFRA) { |
450 | lbs_deb_assoc("Deauthenticating due to leaving " | |
451 | "infra mode\n"); | |
452 | ret = 1; | |
453 | goto out; | |
454 | } | |
876c9d3a MT |
455 | } |
456 | ||
0765af44 HS |
457 | out: |
458 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); | |
876c9d3a MT |
459 | return 0; |
460 | } | |
461 | ||
462 | ||
aa21c004 | 463 | static int should_stop_adhoc(struct lbs_private *priv, |
876c9d3a MT |
464 | struct assoc_request * assoc_req) |
465 | { | |
0765af44 HS |
466 | lbs_deb_enter(LBS_DEB_ASSOC); |
467 | ||
aa21c004 | 468 | if (priv->connect_status != LBS_CONNECTED) |
876c9d3a MT |
469 | return 0; |
470 | ||
aa21c004 DW |
471 | if (lbs_ssid_cmp(priv->curbssparams.ssid, |
472 | priv->curbssparams.ssid_len, | |
d8efea25 | 473 | assoc_req->ssid, assoc_req->ssid_len) != 0) |
876c9d3a MT |
474 | return 1; |
475 | ||
476 | /* FIXME: deal with 'auto' mode somehow */ | |
477 | if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) { | |
0dc5a290 | 478 | if (assoc_req->mode != IW_MODE_ADHOC) |
876c9d3a MT |
479 | return 1; |
480 | } | |
481 | ||
ef9a264b | 482 | if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) { |
aa21c004 | 483 | if (assoc_req->channel != priv->curbssparams.channel) |
ef9a264b DW |
484 | return 1; |
485 | } | |
486 | ||
0765af44 | 487 | lbs_deb_leave(LBS_DEB_ASSOC); |
876c9d3a MT |
488 | return 0; |
489 | } | |
490 | ||
491 | ||
10078321 | 492 | void lbs_association_worker(struct work_struct *work) |
876c9d3a | 493 | { |
69f9032d HS |
494 | struct lbs_private *priv = container_of(work, struct lbs_private, |
495 | assoc_work.work); | |
876c9d3a MT |
496 | struct assoc_request * assoc_req = NULL; |
497 | int ret = 0; | |
498 | int find_any_ssid = 0; | |
0795af57 | 499 | DECLARE_MAC_BUF(mac); |
876c9d3a | 500 | |
9012b28a | 501 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 502 | |
aa21c004 DW |
503 | mutex_lock(&priv->lock); |
504 | assoc_req = priv->pending_assoc_req; | |
505 | priv->pending_assoc_req = NULL; | |
506 | priv->in_progress_assoc_req = assoc_req; | |
507 | mutex_unlock(&priv->lock); | |
876c9d3a | 508 | |
9012b28a HS |
509 | if (!assoc_req) |
510 | goto done; | |
876c9d3a | 511 | |
0765af44 HS |
512 | lbs_deb_assoc( |
513 | "Association Request:\n" | |
514 | " flags: 0x%08lx\n" | |
515 | " SSID: '%s'\n" | |
516 | " chann: %d\n" | |
517 | " band: %d\n" | |
518 | " mode: %d\n" | |
519 | " BSSID: %s\n" | |
520 | " secinfo: %s%s%s\n" | |
521 | " auth_mode: %d\n", | |
522 | assoc_req->flags, | |
523 | escape_essid(assoc_req->ssid, assoc_req->ssid_len), | |
524 | assoc_req->channel, assoc_req->band, assoc_req->mode, | |
525 | print_mac(mac, assoc_req->bssid), | |
526 | assoc_req->secinfo.WPAenabled ? " WPA" : "", | |
527 | assoc_req->secinfo.WPA2enabled ? " WPA2" : "", | |
528 | assoc_req->secinfo.wep_enabled ? " WEP" : "", | |
529 | assoc_req->secinfo.auth_mode); | |
876c9d3a MT |
530 | |
531 | /* If 'any' SSID was specified, find an SSID to associate with */ | |
532 | if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags) | |
d8efea25 | 533 | && !assoc_req->ssid_len) |
876c9d3a MT |
534 | find_any_ssid = 1; |
535 | ||
536 | /* But don't use 'any' SSID if there's a valid locked BSSID to use */ | |
537 | if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) { | |
3cf20931 DW |
538 | if (compare_ether_addr(assoc_req->bssid, bssid_any) |
539 | && compare_ether_addr(assoc_req->bssid, bssid_off)) | |
876c9d3a MT |
540 | find_any_ssid = 0; |
541 | } | |
542 | ||
543 | if (find_any_ssid) { | |
0dc5a290 | 544 | u8 new_mode; |
876c9d3a | 545 | |
10078321 | 546 | ret = lbs_find_best_network_ssid(priv, assoc_req->ssid, |
d8efea25 | 547 | &assoc_req->ssid_len, assoc_req->mode, &new_mode); |
876c9d3a | 548 | if (ret) { |
9012b28a | 549 | lbs_deb_assoc("Could not find best network\n"); |
876c9d3a MT |
550 | ret = -ENETUNREACH; |
551 | goto out; | |
552 | } | |
553 | ||
554 | /* Ensure we switch to the mode of the AP */ | |
0dc5a290 | 555 | if (assoc_req->mode == IW_MODE_AUTO) { |
876c9d3a MT |
556 | set_bit(ASSOC_FLAG_MODE, &assoc_req->flags); |
557 | assoc_req->mode = new_mode; | |
558 | } | |
559 | } | |
560 | ||
561 | /* | |
562 | * Check if the attributes being changing require deauthentication | |
563 | * from the currently associated infrastructure access point. | |
564 | */ | |
aa21c004 DW |
565 | if (priv->mode == IW_MODE_INFRA) { |
566 | if (should_deauth_infrastructure(priv, assoc_req)) { | |
10078321 | 567 | ret = lbs_send_deauthentication(priv); |
876c9d3a | 568 | if (ret) { |
9012b28a | 569 | lbs_deb_assoc("Deauthentication due to new " |
876c9d3a MT |
570 | "configuration request failed: %d\n", |
571 | ret); | |
572 | } | |
573 | } | |
aa21c004 DW |
574 | } else if (priv->mode == IW_MODE_ADHOC) { |
575 | if (should_stop_adhoc(priv, assoc_req)) { | |
10078321 | 576 | ret = lbs_stop_adhoc_network(priv); |
876c9d3a | 577 | if (ret) { |
9012b28a | 578 | lbs_deb_assoc("Teardown of AdHoc network due to " |
876c9d3a MT |
579 | "new configuration request failed: %d\n", |
580 | ret); | |
581 | } | |
582 | ||
583 | } | |
584 | } | |
585 | ||
586 | /* Send the various configuration bits to the firmware */ | |
587 | if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) { | |
588 | ret = assoc_helper_mode(priv, assoc_req); | |
0765af44 | 589 | if (ret) |
876c9d3a | 590 | goto out; |
876c9d3a MT |
591 | } |
592 | ||
ef9a264b DW |
593 | if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) { |
594 | ret = assoc_helper_channel(priv, assoc_req); | |
0765af44 | 595 | if (ret) |
ef9a264b | 596 | goto out; |
ef9a264b DW |
597 | } |
598 | ||
876c9d3a MT |
599 | if ( test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags) |
600 | || test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) { | |
601 | ret = assoc_helper_wep_keys(priv, assoc_req); | |
0765af44 | 602 | if (ret) |
876c9d3a | 603 | goto out; |
876c9d3a MT |
604 | } |
605 | ||
606 | if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) { | |
607 | ret = assoc_helper_secinfo(priv, assoc_req); | |
0765af44 | 608 | if (ret) |
876c9d3a | 609 | goto out; |
876c9d3a MT |
610 | } |
611 | ||
612 | if (test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) { | |
613 | ret = assoc_helper_wpa_ie(priv, assoc_req); | |
0765af44 | 614 | if (ret) |
876c9d3a | 615 | goto out; |
876c9d3a MT |
616 | } |
617 | ||
618 | if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags) | |
619 | || test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) { | |
620 | ret = assoc_helper_wpa_keys(priv, assoc_req); | |
0765af44 | 621 | if (ret) |
876c9d3a | 622 | goto out; |
876c9d3a MT |
623 | } |
624 | ||
625 | /* SSID/BSSID should be the _last_ config option set, because they | |
626 | * trigger the association attempt. | |
627 | */ | |
628 | if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags) | |
629 | || test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) { | |
630 | int success = 1; | |
631 | ||
632 | ret = assoc_helper_associate(priv, assoc_req); | |
633 | if (ret) { | |
91843463 | 634 | lbs_deb_assoc("ASSOC: association unsuccessful: %d\n", |
876c9d3a MT |
635 | ret); |
636 | success = 0; | |
637 | } | |
638 | ||
aa21c004 | 639 | if (priv->connect_status != LBS_CONNECTED) { |
91843463 HS |
640 | lbs_deb_assoc("ASSOC: association unsuccessful, " |
641 | "not connected\n"); | |
876c9d3a MT |
642 | success = 0; |
643 | } | |
644 | ||
645 | if (success) { | |
91843463 | 646 | lbs_deb_assoc("ASSOC: associated to '%s', %s\n", |
aa21c004 DW |
647 | escape_essid(priv->curbssparams.ssid, |
648 | priv->curbssparams.ssid_len), | |
649 | print_mac(mac, priv->curbssparams.bssid)); | |
10078321 | 650 | lbs_prepare_and_send_command(priv, |
0aef64d7 DW |
651 | CMD_802_11_RSSI, |
652 | 0, CMD_OPTION_WAITFORRSP, 0, NULL); | |
876c9d3a | 653 | |
10078321 | 654 | lbs_prepare_and_send_command(priv, |
0aef64d7 DW |
655 | CMD_802_11_GET_LOG, |
656 | 0, CMD_OPTION_WAITFORRSP, 0, NULL); | |
876c9d3a | 657 | } else { |
876c9d3a MT |
658 | ret = -1; |
659 | } | |
660 | } | |
661 | ||
662 | out: | |
663 | if (ret) { | |
9012b28a | 664 | lbs_deb_assoc("ASSOC: reconfiguration attempt unsuccessful: %d\n", |
876c9d3a MT |
665 | ret); |
666 | } | |
e76850d6 | 667 | |
aa21c004 DW |
668 | mutex_lock(&priv->lock); |
669 | priv->in_progress_assoc_req = NULL; | |
670 | mutex_unlock(&priv->lock); | |
876c9d3a | 671 | kfree(assoc_req); |
9012b28a HS |
672 | |
673 | done: | |
674 | lbs_deb_leave(LBS_DEB_ASSOC); | |
876c9d3a MT |
675 | } |
676 | ||
677 | ||
678 | /* | |
679 | * Caller MUST hold any necessary locks | |
680 | */ | |
aa21c004 | 681 | struct assoc_request *lbs_get_association_request(struct lbs_private *priv) |
876c9d3a MT |
682 | { |
683 | struct assoc_request * assoc_req; | |
684 | ||
0765af44 | 685 | lbs_deb_enter(LBS_DEB_ASSOC); |
aa21c004 DW |
686 | if (!priv->pending_assoc_req) { |
687 | priv->pending_assoc_req = kzalloc(sizeof(struct assoc_request), | |
e76850d6 | 688 | GFP_KERNEL); |
aa21c004 | 689 | if (!priv->pending_assoc_req) { |
876c9d3a MT |
690 | lbs_pr_info("Not enough memory to allocate association" |
691 | " request!\n"); | |
692 | return NULL; | |
693 | } | |
694 | } | |
695 | ||
696 | /* Copy current configuration attributes to the association request, | |
697 | * but don't overwrite any that are already set. | |
698 | */ | |
aa21c004 | 699 | assoc_req = priv->pending_assoc_req; |
876c9d3a | 700 | if (!test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) { |
aa21c004 | 701 | memcpy(&assoc_req->ssid, &priv->curbssparams.ssid, |
d8efea25 | 702 | IW_ESSID_MAX_SIZE); |
aa21c004 | 703 | assoc_req->ssid_len = priv->curbssparams.ssid_len; |
876c9d3a MT |
704 | } |
705 | ||
706 | if (!test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) | |
aa21c004 | 707 | assoc_req->channel = priv->curbssparams.channel; |
876c9d3a | 708 | |
e76850d6 | 709 | if (!test_bit(ASSOC_FLAG_BAND, &assoc_req->flags)) |
aa21c004 | 710 | assoc_req->band = priv->curbssparams.band; |
e76850d6 | 711 | |
876c9d3a | 712 | if (!test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) |
aa21c004 | 713 | assoc_req->mode = priv->mode; |
876c9d3a MT |
714 | |
715 | if (!test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) { | |
aa21c004 | 716 | memcpy(&assoc_req->bssid, priv->curbssparams.bssid, |
876c9d3a MT |
717 | ETH_ALEN); |
718 | } | |
719 | ||
720 | if (!test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)) { | |
721 | int i; | |
722 | for (i = 0; i < 4; i++) { | |
aa21c004 | 723 | memcpy(&assoc_req->wep_keys[i], &priv->wep_keys[i], |
1443b653 | 724 | sizeof(struct enc_key)); |
876c9d3a MT |
725 | } |
726 | } | |
727 | ||
728 | if (!test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) | |
aa21c004 | 729 | assoc_req->wep_tx_keyidx = priv->wep_tx_keyidx; |
876c9d3a MT |
730 | |
731 | if (!test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) { | |
aa21c004 | 732 | memcpy(&assoc_req->wpa_mcast_key, &priv->wpa_mcast_key, |
1443b653 | 733 | sizeof(struct enc_key)); |
876c9d3a MT |
734 | } |
735 | ||
736 | if (!test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) { | |
aa21c004 | 737 | memcpy(&assoc_req->wpa_unicast_key, &priv->wpa_unicast_key, |
1443b653 | 738 | sizeof(struct enc_key)); |
876c9d3a MT |
739 | } |
740 | ||
741 | if (!test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) { | |
aa21c004 | 742 | memcpy(&assoc_req->secinfo, &priv->secinfo, |
10078321 | 743 | sizeof(struct lbs_802_11_security)); |
876c9d3a MT |
744 | } |
745 | ||
746 | if (!test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) { | |
aa21c004 | 747 | memcpy(&assoc_req->wpa_ie, &priv->wpa_ie, |
876c9d3a | 748 | MAX_WPA_IE_LEN); |
aa21c004 | 749 | assoc_req->wpa_ie_len = priv->wpa_ie_len; |
876c9d3a MT |
750 | } |
751 | ||
0765af44 | 752 | lbs_deb_leave(LBS_DEB_ASSOC); |
876c9d3a MT |
753 | return assoc_req; |
754 | } |