Commit | Line | Data |
---|---|---|
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 | ||
69f9032d | 184 | static int assoc_helper_channel(struct lbs_private *priv, |
ef9a264b DW |
185 | struct assoc_request * assoc_req) |
186 | { | |
ef9a264b DW |
187 | int ret = 0; |
188 | ||
189 | lbs_deb_enter(LBS_DEB_ASSOC); | |
190 | ||
9f462577 | 191 | ret = lbs_update_channel(priv); |
d1a469fd | 192 | if (ret) { |
23d36eec | 193 | lbs_deb_assoc("ASSOC: channel: error getting channel.\n"); |
d1a469fd | 194 | goto done; |
ef9a264b DW |
195 | } |
196 | ||
aa21c004 | 197 | if (assoc_req->channel == priv->curbssparams.channel) |
ef9a264b DW |
198 | goto done; |
199 | ||
8642f1f0 | 200 | if (priv->mesh_dev) { |
86062134 DW |
201 | /* Change mesh channel first; 21.p21 firmware won't let |
202 | you change channel otherwise (even though it'll return | |
203 | an error to this */ | |
204 | lbs_mesh_config(priv, 0, assoc_req->channel); | |
8642f1f0 DW |
205 | } |
206 | ||
ef9a264b | 207 | lbs_deb_assoc("ASSOC: channel: %d -> %d\n", |
86062134 | 208 | priv->curbssparams.channel, assoc_req->channel); |
ef9a264b | 209 | |
2dd4b262 DW |
210 | ret = lbs_set_channel(priv, assoc_req->channel); |
211 | if (ret < 0) | |
23d36eec | 212 | lbs_deb_assoc("ASSOC: channel: error setting channel.\n"); |
ef9a264b | 213 | |
2dd4b262 DW |
214 | /* FIXME: shouldn't need to grab the channel _again_ after setting |
215 | * it since the firmware is supposed to return the new channel, but | |
216 | * whatever... */ | |
9f462577 | 217 | ret = lbs_update_channel(priv); |
d1a469fd | 218 | if (ret) { |
23d36eec | 219 | lbs_deb_assoc("ASSOC: channel: error getting channel.\n"); |
d1a469fd DW |
220 | goto done; |
221 | } | |
ef9a264b | 222 | |
aa21c004 | 223 | if (assoc_req->channel != priv->curbssparams.channel) { |
88ae2915 | 224 | lbs_deb_assoc("ASSOC: channel: failed to update channel to %d\n", |
ef9a264b | 225 | assoc_req->channel); |
8642f1f0 | 226 | goto restore_mesh; |
ef9a264b DW |
227 | } |
228 | ||
229 | if ( assoc_req->secinfo.wep_enabled | |
230 | && (assoc_req->wep_keys[0].len | |
231 | || assoc_req->wep_keys[1].len | |
232 | || assoc_req->wep_keys[2].len | |
233 | || assoc_req->wep_keys[3].len)) { | |
234 | /* Make sure WEP keys are re-sent to firmware */ | |
235 | set_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags); | |
236 | } | |
237 | ||
238 | /* Must restart/rejoin adhoc networks after channel change */ | |
23d36eec | 239 | set_bit(ASSOC_FLAG_SSID, &assoc_req->flags); |
ef9a264b | 240 | |
8642f1f0 DW |
241 | restore_mesh: |
242 | if (priv->mesh_dev) | |
86062134 | 243 | lbs_mesh_config(priv, 1, priv->curbssparams.channel); |
8642f1f0 DW |
244 | |
245 | done: | |
ef9a264b DW |
246 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
247 | return ret; | |
248 | } | |
249 | ||
250 | ||
69f9032d | 251 | static int assoc_helper_wep_keys(struct lbs_private *priv, |
f70dd451 | 252 | struct assoc_request *assoc_req) |
876c9d3a | 253 | { |
876c9d3a MT |
254 | int i; |
255 | int ret = 0; | |
256 | ||
9012b28a | 257 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a MT |
258 | |
259 | /* Set or remove WEP keys */ | |
f70dd451 DW |
260 | if (assoc_req->wep_keys[0].len || assoc_req->wep_keys[1].len || |
261 | assoc_req->wep_keys[2].len || assoc_req->wep_keys[3].len) | |
262 | ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_ADD, assoc_req); | |
263 | else | |
264 | ret = lbs_cmd_802_11_set_wep(priv, CMD_ACT_REMOVE, assoc_req); | |
876c9d3a MT |
265 | |
266 | if (ret) | |
267 | goto out; | |
268 | ||
269 | /* enable/disable the MAC's WEP packet filter */ | |
889c05bd | 270 | if (assoc_req->secinfo.wep_enabled) |
aa21c004 | 271 | priv->currentpacketfilter |= CMD_ACT_MAC_WEP_ENABLE; |
876c9d3a | 272 | else |
aa21c004 | 273 | priv->currentpacketfilter &= ~CMD_ACT_MAC_WEP_ENABLE; |
f70dd451 | 274 | |
10078321 | 275 | ret = lbs_set_mac_packet_filter(priv); |
876c9d3a MT |
276 | if (ret) |
277 | goto out; | |
278 | ||
aa21c004 | 279 | mutex_lock(&priv->lock); |
876c9d3a | 280 | |
aa21c004 | 281 | /* Copy WEP keys into priv wep key fields */ |
876c9d3a | 282 | for (i = 0; i < 4; i++) { |
aa21c004 | 283 | memcpy(&priv->wep_keys[i], &assoc_req->wep_keys[i], |
f70dd451 | 284 | sizeof(struct enc_key)); |
876c9d3a | 285 | } |
aa21c004 | 286 | priv->wep_tx_keyidx = assoc_req->wep_tx_keyidx; |
876c9d3a | 287 | |
aa21c004 | 288 | mutex_unlock(&priv->lock); |
876c9d3a MT |
289 | |
290 | out: | |
9012b28a | 291 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
876c9d3a MT |
292 | return ret; |
293 | } | |
294 | ||
69f9032d | 295 | static int assoc_helper_secinfo(struct lbs_private *priv, |
876c9d3a MT |
296 | struct assoc_request * assoc_req) |
297 | { | |
876c9d3a | 298 | int ret = 0; |
4f59abf1 DW |
299 | uint16_t do_wpa; |
300 | uint16_t rsn = 0; | |
876c9d3a | 301 | |
9012b28a | 302 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 303 | |
aa21c004 | 304 | memcpy(&priv->secinfo, &assoc_req->secinfo, |
10078321 | 305 | sizeof(struct lbs_802_11_security)); |
876c9d3a | 306 | |
10078321 | 307 | ret = lbs_set_mac_packet_filter(priv); |
90a42210 DW |
308 | if (ret) |
309 | goto out; | |
876c9d3a | 310 | |
18c96c34 DW |
311 | /* If RSN is already enabled, don't try to enable it again, since |
312 | * ENABLE_RSN resets internal state machines and will clobber the | |
313 | * 4-way WPA handshake. | |
314 | */ | |
315 | ||
316 | /* Get RSN enabled/disabled */ | |
4f59abf1 | 317 | ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_GET, &rsn); |
18c96c34 | 318 | if (ret) { |
23d36eec | 319 | lbs_deb_assoc("Failed to get RSN status: %d\n", ret); |
18c96c34 DW |
320 | goto out; |
321 | } | |
322 | ||
323 | /* Don't re-enable RSN if it's already enabled */ | |
4f59abf1 | 324 | do_wpa = assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled; |
18c96c34 DW |
325 | if (do_wpa == rsn) |
326 | goto out; | |
327 | ||
328 | /* Set RSN enabled/disabled */ | |
4f59abf1 | 329 | ret = lbs_cmd_802_11_enable_rsn(priv, CMD_ACT_SET, &do_wpa); |
90a42210 DW |
330 | |
331 | out: | |
9012b28a | 332 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
876c9d3a MT |
333 | return ret; |
334 | } | |
335 | ||
336 | ||
69f9032d | 337 | static int assoc_helper_wpa_keys(struct lbs_private *priv, |
876c9d3a MT |
338 | struct assoc_request * assoc_req) |
339 | { | |
340 | int ret = 0; | |
2bcde51d | 341 | unsigned int flags = assoc_req->flags; |
876c9d3a | 342 | |
9012b28a | 343 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 344 | |
2bcde51d DW |
345 | /* Work around older firmware bug where WPA unicast and multicast |
346 | * keys must be set independently. Seen in SDIO parts with firmware | |
347 | * version 5.0.11p0. | |
348 | */ | |
876c9d3a | 349 | |
2bcde51d DW |
350 | if (test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) { |
351 | clear_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags); | |
9e1228d0 | 352 | ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req); |
2bcde51d DW |
353 | assoc_req->flags = flags; |
354 | } | |
355 | ||
356 | if (ret) | |
357 | goto out; | |
358 | ||
359 | if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) { | |
360 | clear_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags); | |
361 | ||
9e1228d0 | 362 | ret = lbs_cmd_802_11_key_material(priv, CMD_ACT_SET, assoc_req); |
2bcde51d DW |
363 | assoc_req->flags = flags; |
364 | } | |
365 | ||
366 | out: | |
9012b28a | 367 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
876c9d3a MT |
368 | return ret; |
369 | } | |
370 | ||
371 | ||
69f9032d | 372 | static int assoc_helper_wpa_ie(struct lbs_private *priv, |
876c9d3a MT |
373 | struct assoc_request * assoc_req) |
374 | { | |
876c9d3a MT |
375 | int ret = 0; |
376 | ||
9012b28a | 377 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a MT |
378 | |
379 | if (assoc_req->secinfo.WPAenabled || assoc_req->secinfo.WPA2enabled) { | |
aa21c004 DW |
380 | memcpy(&priv->wpa_ie, &assoc_req->wpa_ie, assoc_req->wpa_ie_len); |
381 | priv->wpa_ie_len = assoc_req->wpa_ie_len; | |
876c9d3a | 382 | } else { |
aa21c004 DW |
383 | memset(&priv->wpa_ie, 0, MAX_WPA_IE_LEN); |
384 | priv->wpa_ie_len = 0; | |
876c9d3a MT |
385 | } |
386 | ||
9012b28a | 387 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); |
876c9d3a MT |
388 | return ret; |
389 | } | |
390 | ||
391 | ||
aa21c004 | 392 | static int should_deauth_infrastructure(struct lbs_private *priv, |
876c9d3a MT |
393 | struct assoc_request * assoc_req) |
394 | { | |
0765af44 HS |
395 | int ret = 0; |
396 | ||
aa21c004 | 397 | if (priv->connect_status != LBS_CONNECTED) |
876c9d3a MT |
398 | return 0; |
399 | ||
52507c20 | 400 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 401 | if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) { |
0765af44 HS |
402 | lbs_deb_assoc("Deauthenticating due to new SSID\n"); |
403 | ret = 1; | |
404 | goto out; | |
876c9d3a MT |
405 | } |
406 | ||
407 | if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) { | |
aa21c004 | 408 | if (priv->secinfo.auth_mode != assoc_req->secinfo.auth_mode) { |
0765af44 HS |
409 | lbs_deb_assoc("Deauthenticating due to new security\n"); |
410 | ret = 1; | |
411 | goto out; | |
876c9d3a MT |
412 | } |
413 | } | |
414 | ||
415 | if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) { | |
0765af44 HS |
416 | lbs_deb_assoc("Deauthenticating due to new BSSID\n"); |
417 | ret = 1; | |
418 | goto out; | |
876c9d3a MT |
419 | } |
420 | ||
fff47f10 | 421 | if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) { |
0765af44 HS |
422 | lbs_deb_assoc("Deauthenticating due to channel switch\n"); |
423 | ret = 1; | |
424 | goto out; | |
fff47f10 LCCR |
425 | } |
426 | ||
876c9d3a MT |
427 | /* FIXME: deal with 'auto' mode somehow */ |
428 | if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) { | |
0765af44 HS |
429 | if (assoc_req->mode != IW_MODE_INFRA) { |
430 | lbs_deb_assoc("Deauthenticating due to leaving " | |
431 | "infra mode\n"); | |
432 | ret = 1; | |
433 | goto out; | |
434 | } | |
876c9d3a MT |
435 | } |
436 | ||
0765af44 HS |
437 | out: |
438 | lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); | |
52507c20 | 439 | return ret; |
876c9d3a MT |
440 | } |
441 | ||
442 | ||
aa21c004 | 443 | static int should_stop_adhoc(struct lbs_private *priv, |
876c9d3a MT |
444 | struct assoc_request * assoc_req) |
445 | { | |
0765af44 HS |
446 | lbs_deb_enter(LBS_DEB_ASSOC); |
447 | ||
aa21c004 | 448 | if (priv->connect_status != LBS_CONNECTED) |
876c9d3a MT |
449 | return 0; |
450 | ||
aa21c004 DW |
451 | if (lbs_ssid_cmp(priv->curbssparams.ssid, |
452 | priv->curbssparams.ssid_len, | |
d8efea25 | 453 | assoc_req->ssid, assoc_req->ssid_len) != 0) |
876c9d3a MT |
454 | return 1; |
455 | ||
456 | /* FIXME: deal with 'auto' mode somehow */ | |
457 | if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) { | |
0dc5a290 | 458 | if (assoc_req->mode != IW_MODE_ADHOC) |
876c9d3a MT |
459 | return 1; |
460 | } | |
461 | ||
ef9a264b | 462 | if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) { |
aa21c004 | 463 | if (assoc_req->channel != priv->curbssparams.channel) |
ef9a264b DW |
464 | return 1; |
465 | } | |
466 | ||
0765af44 | 467 | lbs_deb_leave(LBS_DEB_ASSOC); |
876c9d3a MT |
468 | return 0; |
469 | } | |
470 | ||
471 | ||
10078321 | 472 | void lbs_association_worker(struct work_struct *work) |
876c9d3a | 473 | { |
69f9032d HS |
474 | struct lbs_private *priv = container_of(work, struct lbs_private, |
475 | assoc_work.work); | |
876c9d3a MT |
476 | struct assoc_request * assoc_req = NULL; |
477 | int ret = 0; | |
478 | int find_any_ssid = 0; | |
0795af57 | 479 | DECLARE_MAC_BUF(mac); |
876c9d3a | 480 | |
9012b28a | 481 | lbs_deb_enter(LBS_DEB_ASSOC); |
876c9d3a | 482 | |
aa21c004 DW |
483 | mutex_lock(&priv->lock); |
484 | assoc_req = priv->pending_assoc_req; | |
485 | priv->pending_assoc_req = NULL; | |
486 | priv->in_progress_assoc_req = assoc_req; | |
487 | mutex_unlock(&priv->lock); | |
876c9d3a | 488 | |
9012b28a HS |
489 | if (!assoc_req) |
490 | goto done; | |
876c9d3a | 491 | |
0765af44 HS |
492 | lbs_deb_assoc( |
493 | "Association Request:\n" | |
494 | " flags: 0x%08lx\n" | |
495 | " SSID: '%s'\n" | |
496 | " chann: %d\n" | |
497 | " band: %d\n" | |
498 | " mode: %d\n" | |
499 | " BSSID: %s\n" | |
500 | " secinfo: %s%s%s\n" | |
501 | " auth_mode: %d\n", | |
502 | assoc_req->flags, | |
503 | escape_essid(assoc_req->ssid, assoc_req->ssid_len), | |
504 | assoc_req->channel, assoc_req->band, assoc_req->mode, | |
505 | print_mac(mac, assoc_req->bssid), | |
506 | assoc_req->secinfo.WPAenabled ? " WPA" : "", | |
507 | assoc_req->secinfo.WPA2enabled ? " WPA2" : "", | |
508 | assoc_req->secinfo.wep_enabled ? " WEP" : "", | |
509 | assoc_req->secinfo.auth_mode); | |
876c9d3a MT |
510 | |
511 | /* If 'any' SSID was specified, find an SSID to associate with */ | |
512 | if (test_bit(ASSOC_FLAG_SSID, &assoc_req->flags) | |
d8efea25 | 513 | && !assoc_req->ssid_len) |
876c9d3a MT |
514 | find_any_ssid = 1; |
515 | ||
516 | /* But don't use 'any' SSID if there's a valid locked BSSID to use */ | |
517 | if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) { | |
3cf20931 DW |
518 | if (compare_ether_addr(assoc_req->bssid, bssid_any) |
519 | && compare_ether_addr(assoc_req->bssid, bssid_off)) | |
876c9d3a MT |
520 | find_any_ssid = 0; |
521 | } | |
522 | ||
523 | if (find_any_ssid) { | |
0dc5a290 | 524 | u8 new_mode; |
876c9d3a | 525 | |
10078321 | 526 | ret = lbs_find_best_network_ssid(priv, assoc_req->ssid, |
d8efea25 | 527 | &assoc_req->ssid_len, assoc_req->mode, &new_mode); |
876c9d3a | 528 | if (ret) { |
9012b28a | 529 | lbs_deb_assoc("Could not find best network\n"); |
876c9d3a MT |
530 | ret = -ENETUNREACH; |
531 | goto out; | |
532 | } | |
533 | ||
534 | /* Ensure we switch to the mode of the AP */ | |
0dc5a290 | 535 | if (assoc_req->mode == IW_MODE_AUTO) { |
876c9d3a MT |
536 | set_bit(ASSOC_FLAG_MODE, &assoc_req->flags); |
537 | assoc_req->mode = new_mode; | |
538 | } | |
539 | } | |
540 | ||
541 | /* | |
542 | * Check if the attributes being changing require deauthentication | |
543 | * from the currently associated infrastructure access point. | |
544 | */ | |
aa21c004 DW |
545 | if (priv->mode == IW_MODE_INFRA) { |
546 | if (should_deauth_infrastructure(priv, assoc_req)) { | |
10078321 | 547 | ret = lbs_send_deauthentication(priv); |
876c9d3a | 548 | if (ret) { |
9012b28a | 549 | lbs_deb_assoc("Deauthentication due to new " |
876c9d3a MT |
550 | "configuration request failed: %d\n", |
551 | ret); | |
552 | } | |
553 | } | |
aa21c004 DW |
554 | } else if (priv->mode == IW_MODE_ADHOC) { |
555 | if (should_stop_adhoc(priv, assoc_req)) { | |
10078321 | 556 | ret = lbs_stop_adhoc_network(priv); |
876c9d3a | 557 | if (ret) { |
9012b28a | 558 | lbs_deb_assoc("Teardown of AdHoc network due to " |
876c9d3a MT |
559 | "new configuration request failed: %d\n", |
560 | ret); | |
561 | } | |
562 | ||
563 | } | |
564 | } | |
565 | ||
566 | /* Send the various configuration bits to the firmware */ | |
567 | if (test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) { | |
568 | ret = assoc_helper_mode(priv, assoc_req); | |
0765af44 | 569 | if (ret) |
876c9d3a | 570 | goto out; |
876c9d3a MT |
571 | } |
572 | ||
ef9a264b DW |
573 | if (test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) { |
574 | ret = assoc_helper_channel(priv, assoc_req); | |
0765af44 | 575 | if (ret) |
ef9a264b | 576 | goto out; |
ef9a264b DW |
577 | } |
578 | ||
876c9d3a MT |
579 | if ( test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags) |
580 | || test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) { | |
581 | ret = assoc_helper_wep_keys(priv, assoc_req); | |
0765af44 | 582 | if (ret) |
876c9d3a | 583 | goto out; |
876c9d3a MT |
584 | } |
585 | ||
586 | if (test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) { | |
587 | ret = assoc_helper_secinfo(priv, assoc_req); | |
0765af44 | 588 | if (ret) |
876c9d3a | 589 | goto out; |
876c9d3a MT |
590 | } |
591 | ||
592 | if (test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) { | |
593 | ret = assoc_helper_wpa_ie(priv, assoc_req); | |
0765af44 | 594 | if (ret) |
876c9d3a | 595 | goto out; |
876c9d3a MT |
596 | } |
597 | ||
598 | if (test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags) | |
599 | || test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) { | |
600 | ret = assoc_helper_wpa_keys(priv, assoc_req); | |
0765af44 | 601 | if (ret) |
876c9d3a | 602 | goto out; |
876c9d3a MT |
603 | } |
604 | ||
605 | /* SSID/BSSID should be the _last_ config option set, because they | |
606 | * trigger the association attempt. | |
607 | */ | |
608 | if (test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags) | |
609 | || test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) { | |
610 | int success = 1; | |
611 | ||
612 | ret = assoc_helper_associate(priv, assoc_req); | |
613 | if (ret) { | |
91843463 | 614 | lbs_deb_assoc("ASSOC: association unsuccessful: %d\n", |
876c9d3a MT |
615 | ret); |
616 | success = 0; | |
617 | } | |
618 | ||
aa21c004 | 619 | if (priv->connect_status != LBS_CONNECTED) { |
91843463 HS |
620 | lbs_deb_assoc("ASSOC: association unsuccessful, " |
621 | "not connected\n"); | |
876c9d3a MT |
622 | success = 0; |
623 | } | |
624 | ||
625 | if (success) { | |
52507c20 | 626 | lbs_deb_assoc("associated to %s\n", |
aa21c004 | 627 | print_mac(mac, priv->curbssparams.bssid)); |
10078321 | 628 | lbs_prepare_and_send_command(priv, |
0aef64d7 DW |
629 | CMD_802_11_RSSI, |
630 | 0, CMD_OPTION_WAITFORRSP, 0, NULL); | |
876c9d3a | 631 | |
10078321 | 632 | lbs_prepare_and_send_command(priv, |
0aef64d7 DW |
633 | CMD_802_11_GET_LOG, |
634 | 0, CMD_OPTION_WAITFORRSP, 0, NULL); | |
876c9d3a | 635 | } else { |
876c9d3a MT |
636 | ret = -1; |
637 | } | |
638 | } | |
639 | ||
640 | out: | |
641 | if (ret) { | |
9012b28a | 642 | lbs_deb_assoc("ASSOC: reconfiguration attempt unsuccessful: %d\n", |
876c9d3a MT |
643 | ret); |
644 | } | |
e76850d6 | 645 | |
aa21c004 DW |
646 | mutex_lock(&priv->lock); |
647 | priv->in_progress_assoc_req = NULL; | |
648 | mutex_unlock(&priv->lock); | |
876c9d3a | 649 | kfree(assoc_req); |
9012b28a HS |
650 | |
651 | done: | |
652 | lbs_deb_leave(LBS_DEB_ASSOC); | |
876c9d3a MT |
653 | } |
654 | ||
655 | ||
656 | /* | |
657 | * Caller MUST hold any necessary locks | |
658 | */ | |
aa21c004 | 659 | struct assoc_request *lbs_get_association_request(struct lbs_private *priv) |
876c9d3a MT |
660 | { |
661 | struct assoc_request * assoc_req; | |
662 | ||
0765af44 | 663 | lbs_deb_enter(LBS_DEB_ASSOC); |
aa21c004 DW |
664 | if (!priv->pending_assoc_req) { |
665 | priv->pending_assoc_req = kzalloc(sizeof(struct assoc_request), | |
e76850d6 | 666 | GFP_KERNEL); |
aa21c004 | 667 | if (!priv->pending_assoc_req) { |
876c9d3a MT |
668 | lbs_pr_info("Not enough memory to allocate association" |
669 | " request!\n"); | |
670 | return NULL; | |
671 | } | |
672 | } | |
673 | ||
674 | /* Copy current configuration attributes to the association request, | |
675 | * but don't overwrite any that are already set. | |
676 | */ | |
aa21c004 | 677 | assoc_req = priv->pending_assoc_req; |
876c9d3a | 678 | if (!test_bit(ASSOC_FLAG_SSID, &assoc_req->flags)) { |
aa21c004 | 679 | memcpy(&assoc_req->ssid, &priv->curbssparams.ssid, |
d8efea25 | 680 | IW_ESSID_MAX_SIZE); |
aa21c004 | 681 | assoc_req->ssid_len = priv->curbssparams.ssid_len; |
876c9d3a MT |
682 | } |
683 | ||
684 | if (!test_bit(ASSOC_FLAG_CHANNEL, &assoc_req->flags)) | |
aa21c004 | 685 | assoc_req->channel = priv->curbssparams.channel; |
876c9d3a | 686 | |
e76850d6 | 687 | if (!test_bit(ASSOC_FLAG_BAND, &assoc_req->flags)) |
aa21c004 | 688 | assoc_req->band = priv->curbssparams.band; |
e76850d6 | 689 | |
876c9d3a | 690 | if (!test_bit(ASSOC_FLAG_MODE, &assoc_req->flags)) |
aa21c004 | 691 | assoc_req->mode = priv->mode; |
876c9d3a MT |
692 | |
693 | if (!test_bit(ASSOC_FLAG_BSSID, &assoc_req->flags)) { | |
aa21c004 | 694 | memcpy(&assoc_req->bssid, priv->curbssparams.bssid, |
876c9d3a MT |
695 | ETH_ALEN); |
696 | } | |
697 | ||
698 | if (!test_bit(ASSOC_FLAG_WEP_KEYS, &assoc_req->flags)) { | |
699 | int i; | |
700 | for (i = 0; i < 4; i++) { | |
aa21c004 | 701 | memcpy(&assoc_req->wep_keys[i], &priv->wep_keys[i], |
1443b653 | 702 | sizeof(struct enc_key)); |
876c9d3a MT |
703 | } |
704 | } | |
705 | ||
706 | if (!test_bit(ASSOC_FLAG_WEP_TX_KEYIDX, &assoc_req->flags)) | |
aa21c004 | 707 | assoc_req->wep_tx_keyidx = priv->wep_tx_keyidx; |
876c9d3a MT |
708 | |
709 | if (!test_bit(ASSOC_FLAG_WPA_MCAST_KEY, &assoc_req->flags)) { | |
aa21c004 | 710 | memcpy(&assoc_req->wpa_mcast_key, &priv->wpa_mcast_key, |
1443b653 | 711 | sizeof(struct enc_key)); |
876c9d3a MT |
712 | } |
713 | ||
714 | if (!test_bit(ASSOC_FLAG_WPA_UCAST_KEY, &assoc_req->flags)) { | |
aa21c004 | 715 | memcpy(&assoc_req->wpa_unicast_key, &priv->wpa_unicast_key, |
1443b653 | 716 | sizeof(struct enc_key)); |
876c9d3a MT |
717 | } |
718 | ||
719 | if (!test_bit(ASSOC_FLAG_SECINFO, &assoc_req->flags)) { | |
aa21c004 | 720 | memcpy(&assoc_req->secinfo, &priv->secinfo, |
10078321 | 721 | sizeof(struct lbs_802_11_security)); |
876c9d3a MT |
722 | } |
723 | ||
724 | if (!test_bit(ASSOC_FLAG_WPA_IE, &assoc_req->flags)) { | |
aa21c004 | 725 | memcpy(&assoc_req->wpa_ie, &priv->wpa_ie, |
876c9d3a | 726 | MAX_WPA_IE_LEN); |
aa21c004 | 727 | assoc_req->wpa_ie_len = priv->wpa_ie_len; |
876c9d3a MT |
728 | } |
729 | ||
0765af44 | 730 | lbs_deb_leave(LBS_DEB_ASSOC); |
876c9d3a MT |
731 | return assoc_req; |
732 | } |