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  • Committer: Package Import Robot
  • Author(s): Mathieu Trudel-Lapierre
  • Date: 2013-06-12 15:57:50 UTC
  • Revision ID: package-import@ubuntu.com-20130612155750-go9lgylcef8n3f2f
Tags: 0.7.3-6ubuntu2.2
https://launchpad.net/bugs/1187524
* Multiple patches to reduce the number of disconnections for WPA Enterprise
  roaming and Opportunistic Key Caching. (LP: #1187524)
* In debian/patches:
  0001-sme-fix-retry-after-auth-assoc-timeout-failure.patch,
  0002-sme-optimize-recovery-from-common-load-balancing-mechanisms.patch,
  0003-sme-blacklist-bss-on-first-failure-if-only-a-*.patch,
  0004-sme-extend-load-balancing-optimization-in-bss-blacklisting.patch,
  0005-sme-optimize-recovery-from-association-command-failures.patch,
  0006-sme-add-timers-for-authentication-and-association.patch,
  0007-sme-nl80211-set-cipher-suites.patch:
  Cherry-pick patches fixing SME (Session Management Entity) for the nl80211
  driver, which works as a basis for the OKC patches.
* In debian/patches:
  0001-pmkokc-Set-portValid-TRUE-on-association-for-driver-based-4.patch,
  0002-pmkokc-Clear-WPA-and-EAPOL-state-machine-config-pointer-on-.patch,
  0003-pmkokc-Clear-driver-PMKSA-cache-entry-on-PMKSA-cache-expira.patch,
  0004-pmkokc-Flush-PMKSA-cache-entries-and-invalidate-EAP-state-o.patch,
  0005-pmkokc-Fix-proactive_key_caching-configuration-to-WPA-code.patch,
  0006-pmkokc-RSN-Add-a-debug-message-when-considing-addition-of-O.patch,
  0007-pmkokc-Clear-OKC-based-PMKSA-caching-entries-if-PMK-is-chan.patch,
  0008-pmkokc-Move-wpa_sm_remove_pmkid-call-to-PMKSA-cache-entry-f.patch,
  0009-pmkokc-Use-PMKSA-cache-entries-with-only-a-single-network-c.patch,
  0010-pmkokc-PMKSA-Do-not-evict-active-cache-entry-when-adding-ne.patch,
  0011-pmkokc-PMKSA-Set-cur_pmksa-pointer-during-initial-associati.patch,
  0012-pmkokc-PMKSA-make-deauthentication-due-to-cache-entry-remov.patch,
  0013-pmkokc-PMKSA-update-current-cache-entry-due-to-association-.patch:
  Cherry-pick patches to properly do OKC (Opportunistic Key Caching) which
  helps maintaining connectivity on networks secured with WPA Enterprise,
  especially on nl80211-based drivers -- these patches require SME, and add
  or fix key caching and handling of the cache entries.
* debian/patches/force-enable-okc.patch: force Opportunistic Key Caching to
  be enabled.
* debian/patches/less-aggressive-roaming.patch: use less aggressive roaming
  settings to avoid switching to another AP unnecessarily, when the actual
  signal level difference is small.
* debian/patches/wpa_supplicant-dbus-null-error.patch: Don't send NULL to
  dbus_message_new_error().
* debian/patches/0001-nl80211-Fix-UNSPEC-signal-quality-reporting.patch: fix
  marking qual as invalid rather than signal level.
* debian/patches/wpa_supplicant-squelch-driver-disconnect-spam.patch: recover
  cleanly from streams of disconnect messages (like on iwl3945).
* debian/patches/wpa_supplicant-assoc-timeout.patch: increase association
  timeouts.

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.pc/0004-sme-extend-load-balancing-optimization-in-bss-blacklisting.patch/wpa_supplicant/sme.c
 
1
/*
 
2
 * wpa_supplicant - SME
 
3
 * Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi>
 
4
 *
 
5
 * This program is free software; you can redistribute it and/or modify
 
6
 * it under the terms of the GNU General Public License version 2 as
 
7
 * published by the Free Software Foundation.
 
8
 *
 
9
 * Alternatively, this software may be distributed under the terms of BSD
 
10
 * license.
 
11
 *
 
12
 * See README and COPYING for more details.
 
13
 */
 
14
 
 
15
#include "includes.h"
 
16
 
 
17
#include "common.h"
 
18
#include "common/ieee802_11_defs.h"
 
19
#include "common/ieee802_11_common.h"
 
20
#include "eapol_supp/eapol_supp_sm.h"
 
21
#include "common/wpa_common.h"
 
22
#include "rsn_supp/wpa.h"
 
23
#include "rsn_supp/pmksa_cache.h"
 
24
#include "config.h"
 
25
#include "wpa_supplicant_i.h"
 
26
#include "driver_i.h"
 
27
#include "wpas_glue.h"
 
28
#include "wps_supplicant.h"
 
29
#include "notify.h"
 
30
#include "blacklist.h"
 
31
#include "bss.h"
 
32
#include "scan.h"
 
33
#include "sme.h"
 
34
 
 
35
static void add_freq(int *freqs, int *num_freqs, int freq)
 
36
{
 
37
        int i;
 
38
 
 
39
        for (i = 0; i < *num_freqs; i++) {
 
40
                if (freqs[i] == freq)
 
41
                        return;
 
42
        }
 
43
 
 
44
        freqs[*num_freqs] = freq;
 
45
        (*num_freqs)++;
 
46
}
 
47
 
 
48
 
 
49
static int * sme_another_bss_in_ess(struct wpa_supplicant *wpa_s)
 
50
{
 
51
        struct wpa_bss *bss, *cbss;
 
52
        const int max_freqs = 10;
 
53
        int *freqs;
 
54
        int num_freqs = 0;
 
55
 
 
56
        freqs = os_zalloc(sizeof(int) * (max_freqs + 1));
 
57
        if (freqs == NULL)
 
58
                return NULL;
 
59
 
 
60
        cbss = wpa_s->current_bss;
 
61
 
 
62
        dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 
63
                if (bss == cbss)
 
64
                        continue;
 
65
                if (bss->ssid_len == cbss->ssid_len &&
 
66
                    os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 &&
 
67
                    wpa_blacklist_get(wpa_s, bss->bssid) == NULL) {
 
68
                        add_freq(freqs, &num_freqs, bss->freq);
 
69
                        if (num_freqs == max_freqs)
 
70
                                break;
 
71
                }
 
72
        }
 
73
 
 
74
        if (num_freqs == 0) {
 
75
                os_free(freqs);
 
76
                freqs = NULL;
 
77
        }
 
78
 
 
79
        return freqs;
 
80
}
 
81
 
 
82
 
 
83
static void sme_connection_failed(struct wpa_supplicant *wpa_s,
 
84
                                  const u8 *bssid)
 
85
{
 
86
        int timeout;
 
87
        int count;
 
88
        int *freqs = NULL;
 
89
 
 
90
        /*
 
91
         * Add the failed BSSID into the blacklist and speed up next scan
 
92
         * attempt if there could be other APs that could accept association.
 
93
         * The current blacklist count indicates how many times we have tried
 
94
         * connecting to this AP and multiple attempts mean that other APs are
 
95
         * either not available or has already been tried, so that we can start
 
96
         * increasing the delay here to avoid constant scanning.
 
97
         */
 
98
        count = wpa_blacklist_add(wpa_s, bssid);
 
99
        if (count == 1 && wpa_s->current_bss) {
 
100
                /*
 
101
                 * This BSS was not in the blacklist before. If there is
 
102
                 * another BSS available for the same ESS, we should try that
 
103
                 * next. Otherwise, we may as well try this one once more
 
104
                 * before allowing other, likely worse, ESSes to be considered.
 
105
                 */
 
106
                freqs = sme_another_bss_in_ess(wpa_s);
 
107
                if (freqs) {
 
108
                        wpa_printf(MSG_DEBUG, "SME: Another BSS in this ESS "
 
109
                                   "has been seen; try it next");
 
110
                        wpa_blacklist_add(wpa_s, bssid);
 
111
                        /*
 
112
                         * On the next scan, go through only the known channels
 
113
                         * used in this ESS based on previous scans to speed up
 
114
                         * common load balancing use case.
 
115
                         */
 
116
                        os_free(wpa_s->next_scan_freqs);
 
117
                        wpa_s->next_scan_freqs = freqs;
 
118
                }
 
119
        }
 
120
 
 
121
        switch (count) {
 
122
        case 1:
 
123
                timeout = 100;
 
124
                break;
 
125
        case 2:
 
126
                timeout = 500;
 
127
                break;
 
128
        case 3:
 
129
                timeout = 1000;
 
130
                break;
 
131
        default:
 
132
                timeout = 5000;
 
133
        }
 
134
 
 
135
        /*
 
136
         * TODO: if more than one possible AP is available in scan results,
 
137
         * could try the other ones before requesting a new scan.
 
138
         */
 
139
        wpa_supplicant_req_scan(wpa_s, timeout / 1000,
 
140
                                1000 * (timeout % 1000));
 
141
}
 
142
 
 
143
 
 
144
void sme_authenticate(struct wpa_supplicant *wpa_s,
 
145
                      struct wpa_bss *bss, struct wpa_ssid *ssid)
 
146
{
 
147
        struct wpa_driver_auth_params params;
 
148
        struct wpa_ssid *old_ssid;
 
149
#ifdef CONFIG_IEEE80211R
 
150
        const u8 *ie;
 
151
#endif /* CONFIG_IEEE80211R */
 
152
#ifdef CONFIG_IEEE80211R
 
153
        const u8 *md = NULL;
 
154
#endif /* CONFIG_IEEE80211R */
 
155
        int i, bssid_changed;
 
156
 
 
157
        if (bss == NULL) {
 
158
                wpa_printf(MSG_ERROR, "SME: No scan result available for the "
 
159
                           "network");
 
160
                return;
 
161
        }
 
162
 
 
163
        wpa_s->current_bss = bss;
 
164
 
 
165
        os_memset(&params, 0, sizeof(params));
 
166
        wpa_s->reassociate = 0;
 
167
 
 
168
        params.freq = bss->freq;
 
169
        params.bssid = bss->bssid;
 
170
        params.ssid = bss->ssid;
 
171
        params.ssid_len = bss->ssid_len;
 
172
 
 
173
        if (wpa_s->sme.ssid_len != params.ssid_len ||
 
174
            os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
 
175
                wpa_s->sme.prev_bssid_set = 0;
 
176
 
 
177
        wpa_s->sme.freq = params.freq;
 
178
        os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
 
179
        wpa_s->sme.ssid_len = params.ssid_len;
 
180
 
 
181
        params.auth_alg = WPA_AUTH_ALG_OPEN;
 
182
#ifdef IEEE8021X_EAPOL
 
183
        if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 
184
                if (ssid->leap) {
 
185
                        if (ssid->non_leap == 0)
 
186
                                params.auth_alg = WPA_AUTH_ALG_LEAP;
 
187
                        else
 
188
                                params.auth_alg |= WPA_AUTH_ALG_LEAP;
 
189
                }
 
190
        }
 
191
#endif /* IEEE8021X_EAPOL */
 
192
        wpa_printf(MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
 
193
                   params.auth_alg);
 
194
        if (ssid->auth_alg) {
 
195
                params.auth_alg = ssid->auth_alg;
 
196
                wpa_printf(MSG_DEBUG, "Overriding auth_alg selection: 0x%x",
 
197
                           params.auth_alg);
 
198
        }
 
199
 
 
200
        for (i = 0; i < NUM_WEP_KEYS; i++) {
 
201
                if (ssid->wep_key_len[i])
 
202
                        params.wep_key[i] = ssid->wep_key[i];
 
203
                params.wep_key_len[i] = ssid->wep_key_len[i];
 
204
        }
 
205
        params.wep_tx_keyidx = ssid->wep_tx_keyidx;
 
206
 
 
207
        bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 
208
        os_memset(wpa_s->bssid, 0, ETH_ALEN);
 
209
        os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
 
210
        if (bssid_changed)
 
211
                wpas_notify_bssid_changed(wpa_s);
 
212
 
 
213
        if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
 
214
             wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
 
215
            (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
 
216
                               WPA_KEY_MGMT_FT_IEEE8021X |
 
217
                               WPA_KEY_MGMT_FT_PSK |
 
218
                               WPA_KEY_MGMT_IEEE8021X_SHA256 |
 
219
                               WPA_KEY_MGMT_PSK_SHA256))) {
 
220
                int try_opportunistic;
 
221
                try_opportunistic = ssid->proactive_key_caching &&
 
222
                        (ssid->proto & WPA_PROTO_RSN);
 
223
                if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
 
224
                                            wpa_s->current_ssid,
 
225
                                            try_opportunistic) == 0)
 
226
                        eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 
227
                wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
 
228
                if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
 
229
                                              wpa_s->sme.assoc_req_ie,
 
230
                                              &wpa_s->sme.assoc_req_ie_len)) {
 
231
                        wpa_printf(MSG_WARNING, "SME: Failed to set WPA key "
 
232
                                   "management and encryption suites");
 
233
                        return;
 
234
                }
 
235
        } else if (ssid->key_mgmt &
 
236
                   (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
 
237
                    WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
 
238
                    WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
 
239
                    WPA_KEY_MGMT_IEEE8021X_SHA256)) {
 
240
                wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
 
241
                if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 
242
                                              wpa_s->sme.assoc_req_ie,
 
243
                                              &wpa_s->sme.assoc_req_ie_len)) {
 
244
                        wpa_printf(MSG_WARNING, "SME: Failed to set WPA key "
 
245
                                   "management and encryption suites (no scan "
 
246
                                   "results)");
 
247
                        return;
 
248
                }
 
249
#ifdef CONFIG_WPS
 
250
        } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 
251
                struct wpabuf *wps_ie;
 
252
                wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
 
253
                if (wps_ie && wpabuf_len(wps_ie) <=
 
254
                    sizeof(wpa_s->sme.assoc_req_ie)) {
 
255
                        wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
 
256
                        os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
 
257
                                  wpa_s->sme.assoc_req_ie_len);
 
258
                } else
 
259
                        wpa_s->sme.assoc_req_ie_len = 0;
 
260
                wpabuf_free(wps_ie);
 
261
                wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 
262
#endif /* CONFIG_WPS */
 
263
        } else {
 
264
                wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 
265
                wpa_s->sme.assoc_req_ie_len = 0;
 
266
        }
 
267
 
 
268
#ifdef CONFIG_IEEE80211R
 
269
        ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
 
270
        if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
 
271
                md = ie + 2;
 
272
        wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
 
273
        if (md) {
 
274
                /* Prepare for the next transition */
 
275
                wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
 
276
        }
 
277
 
 
278
        if (md && ssid->key_mgmt & (WPA_KEY_MGMT_FT_PSK |
 
279
                                    WPA_KEY_MGMT_FT_IEEE8021X)) {
 
280
                if (wpa_s->sme.assoc_req_ie_len + 5 <
 
281
                    sizeof(wpa_s->sme.assoc_req_ie)) {
 
282
                        struct rsn_mdie *mdie;
 
283
                        u8 *pos = wpa_s->sme.assoc_req_ie +
 
284
                                wpa_s->sme.assoc_req_ie_len;
 
285
                        *pos++ = WLAN_EID_MOBILITY_DOMAIN;
 
286
                        *pos++ = sizeof(*mdie);
 
287
                        mdie = (struct rsn_mdie *) pos;
 
288
                        os_memcpy(mdie->mobility_domain, md,
 
289
                                  MOBILITY_DOMAIN_ID_LEN);
 
290
                        mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
 
291
                        wpa_s->sme.assoc_req_ie_len += 5;
 
292
                }
 
293
 
 
294
                if (wpa_s->sme.ft_used &&
 
295
                    os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
 
296
                    wpa_sm_has_ptk(wpa_s->wpa)) {
 
297
                        wpa_printf(MSG_DEBUG, "SME: Trying to use FT "
 
298
                                   "over-the-air");
 
299
                        params.auth_alg = WPA_AUTH_ALG_FT;
 
300
                        params.ie = wpa_s->sme.ft_ies;
 
301
                        params.ie_len = wpa_s->sme.ft_ies_len;
 
302
                }
 
303
        }
 
304
#endif /* CONFIG_IEEE80211R */
 
305
 
 
306
#ifdef CONFIG_IEEE80211W
 
307
        wpa_s->sme.mfp = ssid->ieee80211w;
 
308
        if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
 
309
                const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 
310
                struct wpa_ie_data _ie;
 
311
                if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
 
312
                    _ie.capabilities &
 
313
                    (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
 
314
                        wpa_printf(MSG_DEBUG, "WPA: Selected AP supports MFP: "
 
315
                                   "require MFP");
 
316
                        wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
 
317
                }
 
318
        }
 
319
#endif /* CONFIG_IEEE80211W */
 
320
 
 
321
        wpa_supplicant_cancel_scan(wpa_s);
 
322
 
 
323
        wpa_msg(wpa_s, MSG_INFO, "Trying to authenticate with " MACSTR
 
324
                " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
 
325
                wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
 
326
 
 
327
        wpa_clear_keys(wpa_s, bss->bssid);
 
328
        wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
 
329
        old_ssid = wpa_s->current_ssid;
 
330
        wpa_s->current_ssid = ssid;
 
331
        wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 
332
        wpa_supplicant_initiate_eapol(wpa_s);
 
333
        if (old_ssid != wpa_s->current_ssid)
 
334
                wpas_notify_network_changed(wpa_s);
 
335
 
 
336
        wpa_s->sme.auth_alg = params.auth_alg;
 
337
        if (wpa_drv_authenticate(wpa_s, &params) < 0) {
 
338
                wpa_msg(wpa_s, MSG_INFO, "Authentication request to the "
 
339
                        "driver failed");
 
340
                wpa_supplicant_req_scan(wpa_s, 1, 0);
 
341
                return;
 
342
        }
 
343
 
 
344
        /* TODO: add timeout on authentication */
 
345
 
 
346
        /*
 
347
         * Association will be started based on the authentication event from
 
348
         * the driver.
 
349
         */
 
350
}
 
351
 
 
352
 
 
353
void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
 
354
{
 
355
        struct wpa_ssid *ssid = wpa_s->current_ssid;
 
356
 
 
357
        if (ssid == NULL) {
 
358
                wpa_printf(MSG_DEBUG, "SME: Ignore authentication event when "
 
359
                           "network is not selected");
 
360
                return;
 
361
        }
 
362
 
 
363
        if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
 
364
                wpa_printf(MSG_DEBUG, "SME: Ignore authentication event when "
 
365
                           "not in authenticating state");
 
366
                return;
 
367
        }
 
368
 
 
369
        if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
 
370
                wpa_printf(MSG_DEBUG, "SME: Ignore authentication with "
 
371
                           "unexpected peer " MACSTR,
 
372
                           MAC2STR(data->auth.peer));
 
373
                return;
 
374
        }
 
375
 
 
376
        wpa_printf(MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
 
377
                   " auth_type=%d status_code=%d",
 
378
                   MAC2STR(data->auth.peer), data->auth.auth_type,
 
379
                   data->auth.status_code);
 
380
        wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
 
381
                    data->auth.ies, data->auth.ies_len);
 
382
 
 
383
        if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
 
384
                wpa_printf(MSG_DEBUG, "SME: Authentication failed (status "
 
385
                           "code %d)", data->auth.status_code);
 
386
 
 
387
                if (data->auth.status_code !=
 
388
                    WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
 
389
                    wpa_s->sme.auth_alg == data->auth.auth_type ||
 
390
                    wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
 
391
                        sme_connection_failed(wpa_s, wpa_s->pending_bssid);
 
392
                        return;
 
393
                }
 
394
 
 
395
                switch (data->auth.auth_type) {
 
396
                case WLAN_AUTH_OPEN:
 
397
                        wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 
398
 
 
399
                        wpa_printf(MSG_DEBUG, "SME: Trying SHARED auth");
 
400
                        wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
 
401
                                                 wpa_s->current_ssid);
 
402
                        return;
 
403
 
 
404
                case WLAN_AUTH_SHARED_KEY:
 
405
                        wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
 
406
 
 
407
                        wpa_printf(MSG_DEBUG, "SME: Trying LEAP auth");
 
408
                        wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
 
409
                                                 wpa_s->current_ssid);
 
410
                        return;
 
411
 
 
412
                default:
 
413
                        return;
 
414
                }
 
415
        }
 
416
 
 
417
#ifdef CONFIG_IEEE80211R
 
418
        if (data->auth.auth_type == WLAN_AUTH_FT) {
 
419
                union wpa_event_data edata;
 
420
                os_memset(&edata, 0, sizeof(edata));
 
421
                edata.ft_ies.ies = data->auth.ies;
 
422
                edata.ft_ies.ies_len = data->auth.ies_len;
 
423
                os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
 
424
                wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
 
425
        }
 
426
#endif /* CONFIG_IEEE80211R */
 
427
 
 
428
        sme_associate(wpa_s, ssid->mode, data->auth.peer,
 
429
                      data->auth.auth_type);
 
430
}
 
431
 
 
432
 
 
433
void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
 
434
                   const u8 *bssid, u16 auth_type)
 
435
{
 
436
        struct wpa_driver_associate_params params;
 
437
        struct ieee802_11_elems elems;
 
438
 
 
439
        os_memset(&params, 0, sizeof(params));
 
440
        params.bssid = bssid;
 
441
        params.ssid = wpa_s->sme.ssid;
 
442
        params.ssid_len = wpa_s->sme.ssid_len;
 
443
        params.freq = wpa_s->sme.freq;
 
444
        params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
 
445
                wpa_s->sme.assoc_req_ie : NULL;
 
446
        params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
 
447
#ifdef CONFIG_IEEE80211R
 
448
        if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
 
449
                params.wpa_ie = wpa_s->sme.ft_ies;
 
450
                params.wpa_ie_len = wpa_s->sme.ft_ies_len;
 
451
        }
 
452
#endif /* CONFIG_IEEE80211R */
 
453
        params.mode = mode;
 
454
        params.mgmt_frame_protection = wpa_s->sme.mfp;
 
455
        if (wpa_s->sme.prev_bssid_set)
 
456
                params.prev_bssid = wpa_s->sme.prev_bssid;
 
457
 
 
458
        wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
 
459
                " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
 
460
                params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
 
461
                params.freq);
 
462
 
 
463
        wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
 
464
 
 
465
        if (params.wpa_ie == NULL ||
 
466
            ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
 
467
            < 0) {
 
468
                wpa_printf(MSG_DEBUG, "SME: Could not parse own IEs?!");
 
469
                os_memset(&elems, 0, sizeof(elems));
 
470
        }
 
471
        if (elems.rsn_ie)
 
472
                wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
 
473
                                        elems.rsn_ie_len + 2);
 
474
        else if (elems.wpa_ie)
 
475
                wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
 
476
                                        elems.wpa_ie_len + 2);
 
477
        else
 
478
                wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 
479
 
 
480
        if (wpa_drv_associate(wpa_s, &params) < 0) {
 
481
                wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
 
482
                        "failed");
 
483
                wpa_supplicant_req_scan(wpa_s, 5, 0);
 
484
                return;
 
485
        }
 
486
 
 
487
        /* TODO: add timeout on association */
 
488
}
 
489
 
 
490
 
 
491
int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
 
492
                      const u8 *ies, size_t ies_len)
 
493
{
 
494
        if (md == NULL || ies == NULL) {
 
495
                wpa_printf(MSG_DEBUG, "SME: Remove mobility domain");
 
496
                os_free(wpa_s->sme.ft_ies);
 
497
                wpa_s->sme.ft_ies = NULL;
 
498
                wpa_s->sme.ft_ies_len = 0;
 
499
                wpa_s->sme.ft_used = 0;
 
500
                return 0;
 
501
        }
 
502
 
 
503
        os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
 
504
        wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
 
505
        os_free(wpa_s->sme.ft_ies);
 
506
        wpa_s->sme.ft_ies = os_malloc(ies_len);
 
507
        if (wpa_s->sme.ft_ies == NULL)
 
508
                return -1;
 
509
        os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
 
510
        wpa_s->sme.ft_ies_len = ies_len;
 
511
        return 0;
 
512
}
 
513
 
 
514
 
 
515
void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
 
516
                            union wpa_event_data *data)
 
517
{
 
518
        int bssid_changed;
 
519
 
 
520
        wpa_printf(MSG_DEBUG, "SME: Association with " MACSTR " failed: "
 
521
                   "status code %d", MAC2STR(wpa_s->pending_bssid),
 
522
                   data->assoc_reject.status_code);
 
523
 
 
524
        bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 
525
 
 
526
        /*
 
527
         * For now, unconditionally terminate the previous authentication. In
 
528
         * theory, this should not be needed, but mac80211 gets quite confused
 
529
         * if the authentication is left pending.. Some roaming cases might
 
530
         * benefit from using the previous authentication, so this could be
 
531
         * optimized in the future.
 
532
         */
 
533
        if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
 
534
                                   WLAN_REASON_DEAUTH_LEAVING) < 0) {
 
535
                wpa_msg(wpa_s, MSG_INFO,
 
536
                        "Deauth request to the driver failed");
 
537
        }
 
538
        wpa_s->sme.prev_bssid_set = 0;
 
539
 
 
540
        sme_connection_failed(wpa_s, wpa_s->pending_bssid);
 
541
        wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 
542
        os_memset(wpa_s->bssid, 0, ETH_ALEN);
 
543
        os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 
544
        if (bssid_changed)
 
545
                wpas_notify_bssid_changed(wpa_s);
 
546
}
 
547
 
 
548
 
 
549
void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
 
550
                              union wpa_event_data *data)
 
551
{
 
552
        wpa_printf(MSG_DEBUG, "SME: Authentication timed out");
 
553
        sme_connection_failed(wpa_s, wpa_s->pending_bssid);
 
554
}
 
555
 
 
556
 
 
557
void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
 
558
                               union wpa_event_data *data)
 
559
{
 
560
        wpa_printf(MSG_DEBUG, "SME: Association timed out");
 
561
        sme_connection_failed(wpa_s, wpa_s->pending_bssid);
 
562
        wpa_supplicant_mark_disassoc(wpa_s);
 
563
}
 
564
 
 
565
 
 
566
void sme_event_disassoc(struct wpa_supplicant *wpa_s,
 
567
                        union wpa_event_data *data)
 
568
{
 
569
        wpa_printf(MSG_DEBUG, "SME: Disassociation event received");
 
570
        if (wpa_s->sme.prev_bssid_set &&
 
571
            !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)) {
 
572
                /*
 
573
                 * cfg80211/mac80211 can get into somewhat confused state if
 
574
                 * the AP only disassociates us and leaves us in authenticated
 
575
                 * state. For now, force the state to be cleared to avoid
 
576
                 * confusing errors if we try to associate with the AP again.
 
577
                 */
 
578
                wpa_printf(MSG_DEBUG, "SME: Deauthenticate to clear driver "
 
579
                           "state");
 
580
                wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
 
581
                                       WLAN_REASON_DEAUTH_LEAVING);
 
582
        }
 
583
}