1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * KUnit tests for inform_bss functions
4 *
5 * Copyright (C) 2023-2024 Intel Corporation
6 */
7 #include <linux/ieee80211.h>
8 #include <net/cfg80211.h>
9 #include <kunit/test.h>
10 #include <kunit/skbuff.h>
11 #include "../core.h"
12 #include "util.h"
13
14 /* mac80211 helpers for element building */
15 #include "../../mac80211/ieee80211_i.h"
16
17 MODULE_IMPORT_NS(EXPORTED_FOR_KUNIT_TESTING);
18
19 struct test_elem {
20 u8 id;
21 u8 len;
22 union {
23 u8 data[255];
24 struct {
25 u8 eid;
26 u8 edata[254];
27 };
28 };
29 };
30
31 static struct gen_new_ie_case {
32 const char *desc;
33 struct test_elem parent_ies[16];
34 struct test_elem child_ies[16];
35 struct test_elem result_ies[16];
36 } gen_new_ie_cases[] = {
37 {
38 .desc = "ML not inherited",
39 .parent_ies = {
40 { .id = WLAN_EID_EXTENSION, .len = 255,
41 .eid = WLAN_EID_EXT_EHT_MULTI_LINK },
42 },
43 .child_ies = {
44 { .id = WLAN_EID_SSID, .len = 2 },
45 },
46 .result_ies = {
47 { .id = WLAN_EID_SSID, .len = 2 },
48 },
49 },
50 {
51 .desc = "fragments are ignored if previous len not 255",
52 .parent_ies = {
53 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 254, },
54 { .id = WLAN_EID_FRAGMENT, .len = 125, },
55 },
56 .child_ies = {
57 { .id = WLAN_EID_SSID, .len = 2 },
58 { .id = WLAN_EID_FRAGMENT, .len = 125, },
59 },
60 .result_ies = {
61 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 254, },
62 { .id = WLAN_EID_SSID, .len = 2 },
63 },
64 },
65 {
66 .desc = "fragments inherited",
67 .parent_ies = {
68 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
69 { .id = WLAN_EID_FRAGMENT, .len = 125, },
70 },
71 .child_ies = {
72 { .id = WLAN_EID_SSID, .len = 2 },
73 },
74 .result_ies = {
75 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
76 { .id = WLAN_EID_FRAGMENT, .len = 125, },
77 { .id = WLAN_EID_SSID, .len = 2 },
78 },
79 },
80 {
81 .desc = "fragments copied",
82 .parent_ies = {
83 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
84 { .id = WLAN_EID_FRAGMENT, .len = 125, },
85 },
86 .child_ies = {
87 { .id = WLAN_EID_SSID, .len = 2 },
88 },
89 .result_ies = {
90 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
91 { .id = WLAN_EID_FRAGMENT, .len = 125, },
92 { .id = WLAN_EID_SSID, .len = 2 },
93 },
94 },
95 {
96 .desc = "multiple elements inherit",
97 .parent_ies = {
98 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
99 { .id = WLAN_EID_FRAGMENT, .len = 125, },
100 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 123, },
101 },
102 .child_ies = {
103 { .id = WLAN_EID_SSID, .len = 2 },
104 },
105 .result_ies = {
106 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
107 { .id = WLAN_EID_FRAGMENT, .len = 125, },
108 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 123, },
109 { .id = WLAN_EID_SSID, .len = 2 },
110 },
111 },
112 {
113 .desc = "one child element overrides",
114 .parent_ies = {
115 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 255, },
116 { .id = WLAN_EID_FRAGMENT, .len = 125, },
117 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 123, },
118 },
119 .child_ies = {
120 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 127, },
121 { .id = WLAN_EID_SSID, .len = 2 },
122 },
123 .result_ies = {
124 { .id = WLAN_EID_REDUCED_NEIGHBOR_REPORT, .len = 127, },
125 { .id = WLAN_EID_SSID, .len = 2 },
126 },
127 },
128 {
129 .desc = "empty elements from parent",
130 .parent_ies = {
131 { .id = 0x1, .len = 0, },
132 { .id = WLAN_EID_EXTENSION, .len = 1, .eid = 0x10 },
133 },
134 .child_ies = {
135 },
136 .result_ies = {
137 { .id = 0x1, .len = 0, },
138 { .id = WLAN_EID_EXTENSION, .len = 1, .eid = 0x10 },
139 },
140 },
141 {
142 .desc = "empty elements from child",
143 .parent_ies = {
144 },
145 .child_ies = {
146 { .id = 0x1, .len = 0, },
147 { .id = WLAN_EID_EXTENSION, .len = 1, .eid = 0x10 },
148 },
149 .result_ies = {
150 { .id = 0x1, .len = 0, },
151 { .id = WLAN_EID_EXTENSION, .len = 1, .eid = 0x10 },
152 },
153 },
154 {
155 .desc = "invalid extended elements ignored",
156 .parent_ies = {
157 { .id = WLAN_EID_EXTENSION, .len = 0 },
158 },
159 .child_ies = {
160 { .id = WLAN_EID_EXTENSION, .len = 0 },
161 },
162 .result_ies = {
163 },
164 },
165 {
166 .desc = "multiple extended elements",
167 .parent_ies = {
168 { .id = WLAN_EID_EXTENSION, .len = 3,
169 .eid = WLAN_EID_EXT_HE_CAPABILITY },
170 { .id = WLAN_EID_EXTENSION, .len = 5,
171 .eid = WLAN_EID_EXT_ASSOC_DELAY_INFO },
172 { .id = WLAN_EID_EXTENSION, .len = 7,
173 .eid = WLAN_EID_EXT_HE_OPERATION },
174 { .id = WLAN_EID_EXTENSION, .len = 11,
175 .eid = WLAN_EID_EXT_FILS_REQ_PARAMS },
176 },
177 .child_ies = {
178 { .id = WLAN_EID_SSID, .len = 13 },
179 { .id = WLAN_EID_EXTENSION, .len = 17,
180 .eid = WLAN_EID_EXT_HE_CAPABILITY },
181 { .id = WLAN_EID_EXTENSION, .len = 11,
182 .eid = WLAN_EID_EXT_FILS_KEY_CONFIRM },
183 { .id = WLAN_EID_EXTENSION, .len = 19,
184 .eid = WLAN_EID_EXT_HE_OPERATION },
185 },
186 .result_ies = {
187 { .id = WLAN_EID_EXTENSION, .len = 17,
188 .eid = WLAN_EID_EXT_HE_CAPABILITY },
189 { .id = WLAN_EID_EXTENSION, .len = 5,
190 .eid = WLAN_EID_EXT_ASSOC_DELAY_INFO },
191 { .id = WLAN_EID_EXTENSION, .len = 19,
192 .eid = WLAN_EID_EXT_HE_OPERATION },
193 { .id = WLAN_EID_EXTENSION, .len = 11,
194 .eid = WLAN_EID_EXT_FILS_REQ_PARAMS },
195 { .id = WLAN_EID_SSID, .len = 13 },
196 { .id = WLAN_EID_EXTENSION, .len = 11,
197 .eid = WLAN_EID_EXT_FILS_KEY_CONFIRM },
198 },
199 },
200 {
201 .desc = "non-inherit element",
202 .parent_ies = {
203 { .id = 0x1, .len = 7, },
204 { .id = 0x2, .len = 11, },
205 { .id = 0x3, .len = 13, },
206 { .id = WLAN_EID_EXTENSION, .len = 17, .eid = 0x10 },
207 { .id = WLAN_EID_EXTENSION, .len = 19, .eid = 0x11 },
208 { .id = WLAN_EID_EXTENSION, .len = 23, .eid = 0x12 },
209 { .id = WLAN_EID_EXTENSION, .len = 29, .eid = 0x14 },
210 },
211 .child_ies = {
212 { .id = WLAN_EID_EXTENSION,
213 .eid = WLAN_EID_EXT_NON_INHERITANCE,
214 .len = 10,
215 .edata = { 0x3, 0x1, 0x2, 0x3,
216 0x4, 0x10, 0x11, 0x13, 0x14 } },
217 { .id = WLAN_EID_SSID, .len = 2 },
218 },
219 .result_ies = {
220 { .id = WLAN_EID_EXTENSION, .len = 23, .eid = 0x12 },
221 { .id = WLAN_EID_SSID, .len = 2 },
222 },
223 },
224 };
KUNIT_ARRAY_PARAM_DESC(gen_new_ie,gen_new_ie_cases,desc)225 KUNIT_ARRAY_PARAM_DESC(gen_new_ie, gen_new_ie_cases, desc)
226
227 static void test_gen_new_ie(struct kunit *test)
228 {
229 const struct gen_new_ie_case *params = test->param_value;
230 struct sk_buff *parent = kunit_zalloc_skb(test, 1024, GFP_KERNEL);
231 struct sk_buff *child = kunit_zalloc_skb(test, 1024, GFP_KERNEL);
232 struct sk_buff *reference = kunit_zalloc_skb(test, 1024, GFP_KERNEL);
233 u8 *out = kunit_kzalloc(test, IEEE80211_MAX_DATA_LEN, GFP_KERNEL);
234 size_t len;
235 int i;
236
237 KUNIT_ASSERT_NOT_NULL(test, parent);
238 KUNIT_ASSERT_NOT_NULL(test, child);
239 KUNIT_ASSERT_NOT_NULL(test, reference);
240 KUNIT_ASSERT_NOT_NULL(test, out);
241
242 for (i = 0; i < ARRAY_SIZE(params->parent_ies); i++) {
243 if (params->parent_ies[i].len != 0) {
244 skb_put_u8(parent, params->parent_ies[i].id);
245 skb_put_u8(parent, params->parent_ies[i].len);
246 skb_put_data(parent, params->parent_ies[i].data,
247 params->parent_ies[i].len);
248 }
249
250 if (params->child_ies[i].len != 0) {
251 skb_put_u8(child, params->child_ies[i].id);
252 skb_put_u8(child, params->child_ies[i].len);
253 skb_put_data(child, params->child_ies[i].data,
254 params->child_ies[i].len);
255 }
256
257 if (params->result_ies[i].len != 0) {
258 skb_put_u8(reference, params->result_ies[i].id);
259 skb_put_u8(reference, params->result_ies[i].len);
260 skb_put_data(reference, params->result_ies[i].data,
261 params->result_ies[i].len);
262 }
263 }
264
265 len = cfg80211_gen_new_ie(parent->data, parent->len,
266 child->data, child->len,
267 out, IEEE80211_MAX_DATA_LEN);
268 KUNIT_EXPECT_EQ(test, len, reference->len);
269 KUNIT_EXPECT_MEMEQ(test, out, reference->data, reference->len);
270 memset(out, 0, IEEE80211_MAX_DATA_LEN);
271
272 /* Exactly enough space */
273 len = cfg80211_gen_new_ie(parent->data, parent->len,
274 child->data, child->len,
275 out, reference->len);
276 KUNIT_EXPECT_EQ(test, len, reference->len);
277 KUNIT_EXPECT_MEMEQ(test, out, reference->data, reference->len);
278 memset(out, 0, IEEE80211_MAX_DATA_LEN);
279
280 /* Not enough space (or expected zero length) */
281 len = cfg80211_gen_new_ie(parent->data, parent->len,
282 child->data, child->len,
283 out, reference->len - 1);
284 KUNIT_EXPECT_EQ(test, len, 0);
285 }
286
test_gen_new_ie_malformed(struct kunit * test)287 static void test_gen_new_ie_malformed(struct kunit *test)
288 {
289 struct sk_buff *malformed = kunit_zalloc_skb(test, 1024, GFP_KERNEL);
290 u8 *out = kunit_kzalloc(test, IEEE80211_MAX_DATA_LEN, GFP_KERNEL);
291 size_t len;
292
293 KUNIT_ASSERT_NOT_NULL(test, malformed);
294 KUNIT_ASSERT_NOT_NULL(test, out);
295
296 skb_put_u8(malformed, WLAN_EID_SSID);
297 skb_put_u8(malformed, 3);
298 skb_put(malformed, 3);
299 skb_put_u8(malformed, WLAN_EID_REDUCED_NEIGHBOR_REPORT);
300 skb_put_u8(malformed, 10);
301 skb_put(malformed, 9);
302
303 len = cfg80211_gen_new_ie(malformed->data, malformed->len,
304 out, 0,
305 out, IEEE80211_MAX_DATA_LEN);
306 KUNIT_EXPECT_EQ(test, len, 5);
307
308 len = cfg80211_gen_new_ie(out, 0,
309 malformed->data, malformed->len,
310 out, IEEE80211_MAX_DATA_LEN);
311 KUNIT_EXPECT_EQ(test, len, 5);
312 }
313
314 struct inform_bss {
315 struct kunit *test;
316
317 int inform_bss_count;
318 };
319
inform_bss_inc_counter(struct wiphy * wiphy,struct cfg80211_bss * bss,const struct cfg80211_bss_ies * ies,void * drv_data)320 static void inform_bss_inc_counter(struct wiphy *wiphy,
321 struct cfg80211_bss *bss,
322 const struct cfg80211_bss_ies *ies,
323 void *drv_data)
324 {
325 struct inform_bss *ctx = t_wiphy_ctx(wiphy);
326
327 ctx->inform_bss_count++;
328
329 rcu_read_lock();
330 KUNIT_EXPECT_PTR_EQ(ctx->test, drv_data, ctx);
331 KUNIT_EXPECT_PTR_EQ(ctx->test, ies, rcu_dereference(bss->ies));
332 rcu_read_unlock();
333 }
334
test_inform_bss_ssid_only(struct kunit * test)335 static void test_inform_bss_ssid_only(struct kunit *test)
336 {
337 struct inform_bss ctx = {
338 .test = test,
339 };
340 struct wiphy *wiphy = T_WIPHY(test, ctx);
341 struct t_wiphy_priv *w_priv = wiphy_priv(wiphy);
342 struct cfg80211_inform_bss inform_bss = {
343 .signal = 50,
344 .drv_data = &ctx,
345 };
346 const u8 bssid[ETH_ALEN] = { 0x10, 0x22, 0x33, 0x44, 0x55, 0x66 };
347 u64 tsf = 0x1000000000000000ULL;
348 int beacon_int = 100;
349 u16 capability = 0x1234;
350 static const u8 input[] = {
351 [0] = WLAN_EID_SSID,
352 [1] = 4,
353 [2] = 'T', 'E', 'S', 'T'
354 };
355 struct cfg80211_bss *bss, *other;
356 const struct cfg80211_bss_ies *ies;
357
358 w_priv->ops->inform_bss = inform_bss_inc_counter;
359
360 inform_bss.chan = ieee80211_get_channel_khz(wiphy, MHZ_TO_KHZ(2412));
361 KUNIT_ASSERT_NOT_NULL(test, inform_bss.chan);
362
363 bss = cfg80211_inform_bss_data(wiphy, &inform_bss,
364 CFG80211_BSS_FTYPE_PRESP, bssid, tsf,
365 capability, beacon_int,
366 input, sizeof(input),
367 GFP_KERNEL);
368 KUNIT_EXPECT_NOT_NULL(test, bss);
369 KUNIT_EXPECT_EQ(test, ctx.inform_bss_count, 1);
370
371 /* Check values in returned bss are correct */
372 KUNIT_EXPECT_EQ(test, bss->signal, inform_bss.signal);
373 KUNIT_EXPECT_EQ(test, bss->beacon_interval, beacon_int);
374 KUNIT_EXPECT_EQ(test, bss->capability, capability);
375 KUNIT_EXPECT_EQ(test, bss->bssid_index, 0);
376 KUNIT_EXPECT_PTR_EQ(test, bss->channel, inform_bss.chan);
377 KUNIT_EXPECT_MEMEQ(test, bssid, bss->bssid, sizeof(bssid));
378
379 /* Check the IEs have the expected value */
380 rcu_read_lock();
381 ies = rcu_dereference(bss->ies);
382 KUNIT_EXPECT_NOT_NULL(test, ies);
383 KUNIT_EXPECT_EQ(test, ies->tsf, tsf);
384 KUNIT_EXPECT_EQ(test, ies->len, sizeof(input));
385 KUNIT_EXPECT_MEMEQ(test, ies->data, input, sizeof(input));
386 rcu_read_unlock();
387
388 /* Check we can look up the BSS - by SSID */
389 other = cfg80211_get_bss(wiphy, NULL, NULL, "TEST", 4,
390 IEEE80211_BSS_TYPE_ANY,
391 IEEE80211_PRIVACY_ANY);
392 KUNIT_EXPECT_PTR_EQ(test, bss, other);
393 cfg80211_put_bss(wiphy, other);
394
395 /* Check we can look up the BSS - by BSSID */
396 other = cfg80211_get_bss(wiphy, NULL, bssid, NULL, 0,
397 IEEE80211_BSS_TYPE_ANY,
398 IEEE80211_PRIVACY_ANY);
399 KUNIT_EXPECT_PTR_EQ(test, bss, other);
400 cfg80211_put_bss(wiphy, other);
401
402 cfg80211_put_bss(wiphy, bss);
403 }
404
405 static struct inform_bss_ml_sta_case {
406 const char *desc;
407 int mld_id;
408 bool sta_prof_vendor_elems;
409 bool include_oper_class;
410 bool nstr;
411 } inform_bss_ml_sta_cases[] = {
412 {
413 .desc = "zero_mld_id",
414 .mld_id = 0,
415 .sta_prof_vendor_elems = false,
416 }, {
417 .desc = "zero_mld_id_with_oper_class",
418 .mld_id = 0,
419 .sta_prof_vendor_elems = false,
420 .include_oper_class = true,
421 }, {
422 .desc = "mld_id_eq_1",
423 .mld_id = 1,
424 .sta_prof_vendor_elems = true,
425 }, {
426 .desc = "mld_id_eq_1_with_oper_class",
427 .mld_id = 1,
428 .sta_prof_vendor_elems = true,
429 .include_oper_class = true,
430 }, {
431 .desc = "nstr",
432 .mld_id = 0,
433 .nstr = true,
434 },
435 };
KUNIT_ARRAY_PARAM_DESC(inform_bss_ml_sta,inform_bss_ml_sta_cases,desc)436 KUNIT_ARRAY_PARAM_DESC(inform_bss_ml_sta, inform_bss_ml_sta_cases, desc)
437
438 static void test_inform_bss_ml_sta(struct kunit *test)
439 {
440 const struct inform_bss_ml_sta_case *params = test->param_value;
441 struct inform_bss ctx = {
442 .test = test,
443 };
444 struct wiphy *wiphy = T_WIPHY(test, ctx);
445 struct t_wiphy_priv *w_priv = wiphy_priv(wiphy);
446 struct cfg80211_inform_bss inform_bss = {
447 .signal = 50,
448 .drv_data = &ctx,
449 };
450 struct cfg80211_bss *bss, *link_bss;
451 const struct cfg80211_bss_ies *ies;
452
453 /* sending station */
454 const u8 bssid[ETH_ALEN] = { 0x10, 0x22, 0x33, 0x44, 0x55, 0x66 };
455 u64 tsf = 0x1000000000000000ULL;
456 int beacon_int = 100;
457 u16 capability = 0x1234;
458
459 /* Building the frame *************************************************/
460 struct sk_buff *input = kunit_zalloc_skb(test, 1024, GFP_KERNEL);
461 u8 *len_mle, *len_prof;
462 u8 link_id = 2;
463 struct {
464 struct ieee80211_neighbor_ap_info info;
465 struct ieee80211_tbtt_info_ge_11 ap;
466 } __packed rnr_normal = {
467 .info = {
468 .tbtt_info_hdr = u8_encode_bits(0, IEEE80211_AP_INFO_TBTT_HDR_COUNT),
469 .tbtt_info_len = sizeof(struct ieee80211_tbtt_info_ge_11),
470 .op_class = 81,
471 .channel = 11,
472 },
473 .ap = {
474 .tbtt_offset = 0xff,
475 .bssid = { 0x10, 0x22, 0x33, 0x44, 0x55, 0x67 },
476 .short_ssid = 0, /* unused */
477 .bss_params = 0,
478 .psd_20 = 0,
479 .mld_params.mld_id = params->mld_id,
480 .mld_params.params =
481 le16_encode_bits(link_id,
482 IEEE80211_RNR_MLD_PARAMS_LINK_ID),
483 }
484 };
485 struct {
486 struct ieee80211_neighbor_ap_info info;
487 struct ieee80211_rnr_mld_params mld_params;
488 } __packed rnr_nstr = {
489 .info = {
490 .tbtt_info_hdr =
491 u8_encode_bits(0, IEEE80211_AP_INFO_TBTT_HDR_COUNT) |
492 u8_encode_bits(IEEE80211_TBTT_INFO_TYPE_MLD,
493 IEEE80211_AP_INFO_TBTT_HDR_TYPE),
494 .tbtt_info_len = sizeof(struct ieee80211_rnr_mld_params),
495 .op_class = 81,
496 .channel = 11,
497 },
498 .mld_params = {
499 .mld_id = params->mld_id,
500 .params =
501 le16_encode_bits(link_id,
502 IEEE80211_RNR_MLD_PARAMS_LINK_ID),
503 }
504 };
505 size_t rnr_len = params->nstr ? sizeof(rnr_nstr) : sizeof(rnr_normal);
506 void *rnr = params->nstr ? (void *)&rnr_nstr : (void *)&rnr_normal;
507 struct {
508 __le16 control;
509 u8 var_len;
510 u8 mld_mac_addr[ETH_ALEN];
511 u8 link_id_info;
512 u8 params_change_count;
513 __le16 mld_caps_and_ops;
514 u8 mld_id;
515 __le16 ext_mld_caps_and_ops;
516 } __packed mle_basic_common_info = {
517 .control =
518 cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC |
519 IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT |
520 IEEE80211_MLC_BASIC_PRES_LINK_ID |
521 (params->mld_id ? IEEE80211_MLC_BASIC_PRES_MLD_ID : 0) |
522 IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP),
523 .mld_id = params->mld_id,
524 .mld_caps_and_ops = cpu_to_le16(0x0102),
525 .ext_mld_caps_and_ops = cpu_to_le16(0x0304),
526 .var_len = sizeof(mle_basic_common_info) - 2 -
527 (params->mld_id ? 0 : 1),
528 .mld_mac_addr = { 0x10, 0x22, 0x33, 0x44, 0x55, 0x60 },
529 };
530 struct {
531 __le16 control;
532 u8 var_len;
533 u8 bssid[ETH_ALEN];
534 __le16 beacon_int;
535 __le64 tsf_offset;
536 __le16 capabilities; /* already part of payload */
537 } __packed sta_prof = {
538 .control =
539 cpu_to_le16(IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE |
540 IEEE80211_MLE_STA_CONTROL_STA_MAC_ADDR_PRESENT |
541 IEEE80211_MLE_STA_CONTROL_BEACON_INT_PRESENT |
542 IEEE80211_MLE_STA_CONTROL_TSF_OFFS_PRESENT |
543 u16_encode_bits(link_id,
544 IEEE80211_MLE_STA_CONTROL_LINK_ID)),
545 .var_len = sizeof(sta_prof) - 2 - 2,
546 .bssid = { *rnr_normal.ap.bssid },
547 .beacon_int = cpu_to_le16(101),
548 .tsf_offset = cpu_to_le64(-123ll),
549 .capabilities = cpu_to_le16(0xdead),
550 };
551
552 KUNIT_ASSERT_NOT_NULL(test, input);
553
554 w_priv->ops->inform_bss = inform_bss_inc_counter;
555
556 inform_bss.chan = ieee80211_get_channel_khz(wiphy, MHZ_TO_KHZ(2412));
557 KUNIT_ASSERT_NOT_NULL(test, inform_bss.chan);
558
559 skb_put_u8(input, WLAN_EID_SSID);
560 skb_put_u8(input, 4);
561 skb_put_data(input, "TEST", 4);
562
563 if (params->include_oper_class) {
564 skb_put_u8(input, WLAN_EID_SUPPORTED_REGULATORY_CLASSES);
565 skb_put_u8(input, 1);
566 skb_put_u8(input, 81);
567 }
568
569 skb_put_u8(input, WLAN_EID_REDUCED_NEIGHBOR_REPORT);
570 skb_put_u8(input, rnr_len);
571 skb_put_data(input, rnr, rnr_len);
572
573 /* build a multi-link element */
574 skb_put_u8(input, WLAN_EID_EXTENSION);
575 len_mle = skb_put(input, 1);
576 skb_put_u8(input, WLAN_EID_EXT_EHT_MULTI_LINK);
577 skb_put_data(input, &mle_basic_common_info, sizeof(mle_basic_common_info));
578 if (!params->mld_id)
579 t_skb_remove_member(input, typeof(mle_basic_common_info), mld_id);
580 /* with a STA profile inside */
581 skb_put_u8(input, IEEE80211_MLE_SUBELEM_PER_STA_PROFILE);
582 len_prof = skb_put(input, 1);
583 skb_put_data(input, &sta_prof, sizeof(sta_prof));
584
585 if (params->sta_prof_vendor_elems) {
586 /* Put two (vendor) element into sta_prof */
587 skb_put_u8(input, WLAN_EID_VENDOR_SPECIFIC);
588 skb_put_u8(input, 160);
589 skb_put(input, 160);
590
591 skb_put_u8(input, WLAN_EID_VENDOR_SPECIFIC);
592 skb_put_u8(input, 165);
593 skb_put(input, 165);
594 }
595
596 /* fragment STA profile */
597 ieee80211_fragment_element(input, len_prof,
598 IEEE80211_MLE_SUBELEM_FRAGMENT);
599 /* fragment MLE */
600 ieee80211_fragment_element(input, len_mle, WLAN_EID_FRAGMENT);
601
602 /* Put a (vendor) element after the ML element */
603 skb_put_u8(input, WLAN_EID_VENDOR_SPECIFIC);
604 skb_put_u8(input, 155);
605 skb_put(input, 155);
606
607 /* Submit *************************************************************/
608 bss = cfg80211_inform_bss_data(wiphy, &inform_bss,
609 CFG80211_BSS_FTYPE_PRESP, bssid, tsf,
610 capability, beacon_int,
611 input->data, input->len,
612 GFP_KERNEL);
613 KUNIT_EXPECT_NOT_NULL(test, bss);
614 KUNIT_EXPECT_EQ(test, ctx.inform_bss_count, 2);
615
616 /* Check link_bss *****************************************************/
617 link_bss = __cfg80211_get_bss(wiphy, NULL, sta_prof.bssid, NULL, 0,
618 IEEE80211_BSS_TYPE_ANY,
619 IEEE80211_PRIVACY_ANY,
620 0);
621 KUNIT_ASSERT_NOT_NULL(test, link_bss);
622 KUNIT_EXPECT_EQ(test, link_bss->signal, 0);
623 KUNIT_EXPECT_EQ(test, link_bss->beacon_interval,
624 le16_to_cpu(sta_prof.beacon_int));
625 KUNIT_EXPECT_EQ(test, link_bss->capability,
626 le16_to_cpu(sta_prof.capabilities));
627 KUNIT_EXPECT_EQ(test, link_bss->bssid_index, 0);
628 KUNIT_EXPECT_PTR_EQ(test, link_bss->channel,
629 ieee80211_get_channel_khz(wiphy, MHZ_TO_KHZ(2462)));
630
631 /* Test wiphy does not set WIPHY_FLAG_SUPPORTS_NSTR_NONPRIMARY */
632 if (params->nstr) {
633 KUNIT_EXPECT_EQ(test, link_bss->use_for, 0);
634 KUNIT_EXPECT_EQ(test, link_bss->cannot_use_reasons,
635 NL80211_BSS_CANNOT_USE_NSTR_NONPRIMARY);
636 KUNIT_EXPECT_NULL(test,
637 cfg80211_get_bss(wiphy, NULL, sta_prof.bssid,
638 NULL, 0,
639 IEEE80211_BSS_TYPE_ANY,
640 IEEE80211_PRIVACY_ANY));
641 } else {
642 KUNIT_EXPECT_EQ(test, link_bss->use_for,
643 NL80211_BSS_USE_FOR_ALL);
644 KUNIT_EXPECT_EQ(test, link_bss->cannot_use_reasons, 0);
645 }
646
647 rcu_read_lock();
648 ies = rcu_dereference(link_bss->ies);
649 KUNIT_EXPECT_NOT_NULL(test, ies);
650 KUNIT_EXPECT_EQ(test, ies->tsf, tsf + le64_to_cpu(sta_prof.tsf_offset));
651 /* Resulting length should be:
652 * SSID (inherited) + RNR (inherited) + vendor element(s) +
653 * operating class (if requested) +
654 * generated RNR (if MLD ID == 0 and not NSTR) +
655 * MLE common info + MLE header and control
656 */
657 if (params->sta_prof_vendor_elems)
658 KUNIT_EXPECT_EQ(test, ies->len,
659 6 + 2 + rnr_len + 2 + 160 + 2 + 165 +
660 (params->include_oper_class ? 3 : 0) +
661 (!params->mld_id && !params->nstr ? 22 : 0) +
662 mle_basic_common_info.var_len + 5);
663 else
664 KUNIT_EXPECT_EQ(test, ies->len,
665 6 + 2 + rnr_len + 2 + 155 +
666 (params->include_oper_class ? 3 : 0) +
667 (!params->mld_id && !params->nstr ? 22 : 0) +
668 mle_basic_common_info.var_len + 5);
669 rcu_read_unlock();
670
671 cfg80211_put_bss(wiphy, bss);
672 cfg80211_put_bss(wiphy, link_bss);
673 }
674
675 static struct cfg80211_parse_colocated_ap_case {
676 const char *desc;
677 u8 op_class;
678 u8 channel;
679 struct ieee80211_neighbor_ap_info info;
680 union {
681 struct ieee80211_tbtt_info_ge_11 tbtt_long;
682 struct ieee80211_tbtt_info_7_8_9 tbtt_short;
683 };
684 bool add_junk;
685 bool same_ssid;
686 bool valid;
687 } cfg80211_parse_colocated_ap_cases[] = {
688 {
689 .desc = "wrong_band",
690 .info.op_class = 81,
691 .info.channel = 11,
692 .tbtt_long = {
693 .bssid = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
694 .bss_params = IEEE80211_RNR_TBTT_PARAMS_COLOC_AP,
695 },
696 .valid = false,
697 },
698 {
699 .desc = "wrong_type",
700 /* IEEE80211_AP_INFO_TBTT_HDR_TYPE is in the least significant bits */
701 .info.tbtt_info_hdr = IEEE80211_TBTT_INFO_TYPE_MLD,
702 .tbtt_long = {
703 .bssid = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
704 .bss_params = IEEE80211_RNR_TBTT_PARAMS_COLOC_AP,
705 },
706 .valid = false,
707 },
708 {
709 .desc = "colocated_invalid_len_short",
710 .info.tbtt_info_len = 6,
711 .tbtt_short = {
712 .bssid = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
713 .bss_params = IEEE80211_RNR_TBTT_PARAMS_COLOC_AP |
714 IEEE80211_RNR_TBTT_PARAMS_SAME_SSID,
715 },
716 .valid = false,
717 },
718 {
719 .desc = "colocated_invalid_len_short_mld",
720 .info.tbtt_info_len = 10,
721 .tbtt_long = {
722 .bssid = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
723 .bss_params = IEEE80211_RNR_TBTT_PARAMS_COLOC_AP,
724 },
725 .valid = false,
726 },
727 {
728 .desc = "colocated_non_mld",
729 .info.tbtt_info_len = sizeof(struct ieee80211_tbtt_info_7_8_9),
730 .tbtt_short = {
731 .bssid = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
732 .bss_params = IEEE80211_RNR_TBTT_PARAMS_COLOC_AP |
733 IEEE80211_RNR_TBTT_PARAMS_SAME_SSID,
734 },
735 .same_ssid = true,
736 .valid = true,
737 },
738 {
739 .desc = "colocated_non_mld_invalid_bssid",
740 .info.tbtt_info_len = sizeof(struct ieee80211_tbtt_info_7_8_9),
741 .tbtt_short = {
742 .bssid = { 0xff, 0x11, 0x22, 0x33, 0x44, 0x55 },
743 .bss_params = IEEE80211_RNR_TBTT_PARAMS_COLOC_AP |
744 IEEE80211_RNR_TBTT_PARAMS_SAME_SSID,
745 },
746 .same_ssid = true,
747 .valid = false,
748 },
749 {
750 .desc = "colocated_mld",
751 .tbtt_long = {
752 .bssid = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
753 .bss_params = IEEE80211_RNR_TBTT_PARAMS_COLOC_AP,
754 },
755 .valid = true,
756 },
757 {
758 .desc = "colocated_mld",
759 .tbtt_long = {
760 .bssid = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
761 .bss_params = IEEE80211_RNR_TBTT_PARAMS_COLOC_AP,
762 },
763 .add_junk = true,
764 .valid = false,
765 },
766 {
767 .desc = "colocated_disabled_mld",
768 .tbtt_long = {
769 .bssid = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55 },
770 .bss_params = IEEE80211_RNR_TBTT_PARAMS_COLOC_AP,
771 .mld_params.params = cpu_to_le16(IEEE80211_RNR_MLD_PARAMS_DISABLED_LINK),
772 },
773 .valid = false,
774 },
775 };
KUNIT_ARRAY_PARAM_DESC(cfg80211_parse_colocated_ap,cfg80211_parse_colocated_ap_cases,desc)776 KUNIT_ARRAY_PARAM_DESC(cfg80211_parse_colocated_ap, cfg80211_parse_colocated_ap_cases, desc)
777
778 static void test_cfg80211_parse_colocated_ap(struct kunit *test)
779 {
780 const struct cfg80211_parse_colocated_ap_case *params = test->param_value;
781 struct sk_buff *input = kunit_zalloc_skb(test, 1024, GFP_KERNEL);
782 struct cfg80211_bss_ies *ies;
783 struct ieee80211_neighbor_ap_info info;
784 LIST_HEAD(coloc_ap_list);
785 int count;
786
787 KUNIT_ASSERT_NOT_NULL(test, input);
788
789 info = params->info;
790
791 /* Reasonable values for a colocated AP */
792 if (!info.tbtt_info_len)
793 info.tbtt_info_len = sizeof(params->tbtt_long);
794 if (!info.op_class)
795 info.op_class = 131;
796 if (!info.channel)
797 info.channel = 33;
798 /* Zero is the correct default for .btt_info_hdr (one entry, TBTT type) */
799
800 skb_put_u8(input, WLAN_EID_SSID);
801 skb_put_u8(input, 4);
802 skb_put_data(input, "TEST", 4);
803
804 skb_put_u8(input, WLAN_EID_REDUCED_NEIGHBOR_REPORT);
805 skb_put_u8(input, sizeof(info) + info.tbtt_info_len + (params->add_junk ? 3 : 0));
806 skb_put_data(input, &info, sizeof(info));
807 skb_put_data(input, ¶ms->tbtt_long, info.tbtt_info_len);
808
809 if (params->add_junk)
810 skb_put_data(input, "123", 3);
811
812 ies = kunit_kzalloc(test, struct_size(ies, data, input->len), GFP_KERNEL);
813 ies->len = input->len;
814 memcpy(ies->data, input->data, input->len);
815
816 count = cfg80211_parse_colocated_ap(ies, &coloc_ap_list);
817
818 KUNIT_EXPECT_EQ(test, count, params->valid);
819 KUNIT_EXPECT_EQ(test, list_count_nodes(&coloc_ap_list), params->valid);
820
821 if (params->valid && !list_empty(&coloc_ap_list)) {
822 struct cfg80211_colocated_ap *ap;
823
824 ap = list_first_entry(&coloc_ap_list, typeof(*ap), list);
825 if (info.tbtt_info_len <= sizeof(params->tbtt_short))
826 KUNIT_EXPECT_MEMEQ(test, ap->bssid, params->tbtt_short.bssid, ETH_ALEN);
827 else
828 KUNIT_EXPECT_MEMEQ(test, ap->bssid, params->tbtt_long.bssid, ETH_ALEN);
829
830 if (params->same_ssid) {
831 KUNIT_EXPECT_EQ(test, ap->ssid_len, 4);
832 KUNIT_EXPECT_MEMEQ(test, ap->ssid, "TEST", 4);
833 } else {
834 KUNIT_EXPECT_EQ(test, ap->ssid_len, 0);
835 }
836 }
837
838 cfg80211_free_coloc_ap_list(&coloc_ap_list);
839 }
840
841 static struct kunit_case gen_new_ie_test_cases[] = {
842 KUNIT_CASE_PARAM(test_gen_new_ie, gen_new_ie_gen_params),
843 KUNIT_CASE(test_gen_new_ie_malformed),
844 {}
845 };
846
847 static struct kunit_suite gen_new_ie = {
848 .name = "cfg80211-ie-generation",
849 .test_cases = gen_new_ie_test_cases,
850 };
851
852 kunit_test_suite(gen_new_ie);
853
854 static struct kunit_case inform_bss_test_cases[] = {
855 KUNIT_CASE(test_inform_bss_ssid_only),
856 KUNIT_CASE_PARAM(test_inform_bss_ml_sta, inform_bss_ml_sta_gen_params),
857 {}
858 };
859
860 static struct kunit_suite inform_bss = {
861 .name = "cfg80211-inform-bss",
862 .test_cases = inform_bss_test_cases,
863 };
864
865 kunit_test_suite(inform_bss);
866
867 static struct kunit_case scan_6ghz_cases[] = {
868 KUNIT_CASE_PARAM(test_cfg80211_parse_colocated_ap,
869 cfg80211_parse_colocated_ap_gen_params),
870 {}
871 };
872
873 static struct kunit_suite scan_6ghz = {
874 .name = "cfg80211-scan-6ghz",
875 .test_cases = scan_6ghz_cases,
876 };
877
878 kunit_test_suite(scan_6ghz);
879