xref: /linux/net/wireless/tests/scan.c (revision e7d759f31ca295d589f7420719c311870bb3166f)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * KUnit tests for inform_bss functions
4  *
5  * Copyright (C) 2023 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 };
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 
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 
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 
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 } inform_bss_ml_sta_cases[] = {
410 	{ .desc = "no_mld_id", .mld_id = 0, .sta_prof_vendor_elems = false },
411 	{ .desc = "mld_id_eq_1", .mld_id = 1, .sta_prof_vendor_elems = true },
412 };
413 KUNIT_ARRAY_PARAM_DESC(inform_bss_ml_sta, inform_bss_ml_sta_cases, desc)
414 
415 static void test_inform_bss_ml_sta(struct kunit *test)
416 {
417 	const struct inform_bss_ml_sta_case *params = test->param_value;
418 	struct inform_bss ctx = {
419 		.test = test,
420 	};
421 	struct wiphy *wiphy = T_WIPHY(test, ctx);
422 	struct t_wiphy_priv *w_priv = wiphy_priv(wiphy);
423 	struct cfg80211_inform_bss inform_bss = {
424 		.signal = 50,
425 		.drv_data = &ctx,
426 	};
427 	struct cfg80211_bss *bss, *link_bss;
428 	const struct cfg80211_bss_ies *ies;
429 
430 	/* sending station */
431 	const u8 bssid[ETH_ALEN] = { 0x10, 0x22, 0x33, 0x44, 0x55, 0x66 };
432 	u64 tsf = 0x1000000000000000ULL;
433 	int beacon_int = 100;
434 	u16 capability = 0x1234;
435 
436 	/* Building the frame *************************************************/
437 	struct sk_buff *input = kunit_zalloc_skb(test, 1024, GFP_KERNEL);
438 	u8 *len_mle, *len_prof;
439 	u8 link_id = 2;
440 	struct {
441 		struct ieee80211_neighbor_ap_info info;
442 		struct ieee80211_tbtt_info_ge_11 ap;
443 	} __packed rnr = {
444 		.info = {
445 			.tbtt_info_hdr = u8_encode_bits(0, IEEE80211_AP_INFO_TBTT_HDR_COUNT),
446 			.tbtt_info_len = sizeof(struct ieee80211_tbtt_info_ge_11),
447 			.op_class = 81,
448 			.channel = 11,
449 		},
450 		.ap = {
451 			.tbtt_offset = 0xff,
452 			.bssid = { 0x10, 0x22, 0x33, 0x44, 0x55, 0x67 },
453 			.short_ssid = 0, /* unused */
454 			.bss_params = 0,
455 			.psd_20 = 0,
456 			.mld_params.mld_id = params->mld_id,
457 			.mld_params.params =
458 				le16_encode_bits(link_id,
459 						 IEEE80211_RNR_MLD_PARAMS_LINK_ID),
460 		}
461 	};
462 	struct {
463 		__le16 control;
464 		u8 var_len;
465 		u8 mld_mac_addr[ETH_ALEN];
466 		u8 link_id_info;
467 		u8 params_change_count;
468 		__le16 mld_caps_and_ops;
469 		u8 mld_id;
470 		__le16 ext_mld_caps_and_ops;
471 	} __packed mle_basic_common_info = {
472 		.control =
473 			cpu_to_le16(IEEE80211_ML_CONTROL_TYPE_BASIC |
474 				    IEEE80211_MLC_BASIC_PRES_BSS_PARAM_CH_CNT |
475 				    IEEE80211_MLC_BASIC_PRES_LINK_ID |
476 				    (params->mld_id ? IEEE80211_MLC_BASIC_PRES_MLD_ID : 0) |
477 				    IEEE80211_MLC_BASIC_PRES_MLD_CAPA_OP),
478 		.mld_id = params->mld_id,
479 		.mld_caps_and_ops = cpu_to_le16(0x0102),
480 		.ext_mld_caps_and_ops = cpu_to_le16(0x0304),
481 		.var_len = sizeof(mle_basic_common_info) - 2 -
482 			   (params->mld_id ? 0 : 1),
483 		.mld_mac_addr = { 0x10, 0x22, 0x33, 0x44, 0x55, 0x60 },
484 	};
485 	struct {
486 		__le16 control;
487 		u8 var_len;
488 		u8 bssid[ETH_ALEN];
489 		__le16 beacon_int;
490 		__le64 tsf_offset;
491 		__le16 capabilities; /* already part of payload */
492 	} __packed sta_prof = {
493 		.control =
494 			cpu_to_le16(IEEE80211_MLE_STA_CONTROL_COMPLETE_PROFILE |
495 				    IEEE80211_MLE_STA_CONTROL_STA_MAC_ADDR_PRESENT |
496 				    IEEE80211_MLE_STA_CONTROL_BEACON_INT_PRESENT |
497 				    IEEE80211_MLE_STA_CONTROL_TSF_OFFS_PRESENT |
498 				    u16_encode_bits(link_id,
499 						    IEEE80211_MLE_STA_CONTROL_LINK_ID)),
500 		.var_len = sizeof(sta_prof) - 2 - 2,
501 		.bssid = { *rnr.ap.bssid },
502 		.beacon_int = cpu_to_le16(101),
503 		.tsf_offset = cpu_to_le64(-123ll),
504 		.capabilities = cpu_to_le16(0xdead),
505 	};
506 
507 	KUNIT_ASSERT_NOT_NULL(test, input);
508 
509 	w_priv->ops->inform_bss = inform_bss_inc_counter;
510 
511 	inform_bss.chan = ieee80211_get_channel_khz(wiphy, MHZ_TO_KHZ(2412));
512 	KUNIT_ASSERT_NOT_NULL(test, inform_bss.chan);
513 
514 	skb_put_u8(input, WLAN_EID_SSID);
515 	skb_put_u8(input, 4);
516 	skb_put_data(input, "TEST", 4);
517 
518 	skb_put_u8(input, WLAN_EID_REDUCED_NEIGHBOR_REPORT);
519 	skb_put_u8(input, sizeof(rnr));
520 	skb_put_data(input, &rnr, sizeof(rnr));
521 
522 	/* build a multi-link element */
523 	skb_put_u8(input, WLAN_EID_EXTENSION);
524 	len_mle = skb_put(input, 1);
525 	skb_put_u8(input, WLAN_EID_EXT_EHT_MULTI_LINK);
526 	skb_put_data(input, &mle_basic_common_info, sizeof(mle_basic_common_info));
527 	if (!params->mld_id)
528 		t_skb_remove_member(input, typeof(mle_basic_common_info), mld_id);
529 	/* with a STA profile inside */
530 	skb_put_u8(input, IEEE80211_MLE_SUBELEM_PER_STA_PROFILE);
531 	len_prof = skb_put(input, 1);
532 	skb_put_data(input, &sta_prof, sizeof(sta_prof));
533 
534 	if (params->sta_prof_vendor_elems) {
535 		/* Put two (vendor) element into sta_prof */
536 		skb_put_u8(input, WLAN_EID_VENDOR_SPECIFIC);
537 		skb_put_u8(input, 160);
538 		skb_put(input, 160);
539 
540 		skb_put_u8(input, WLAN_EID_VENDOR_SPECIFIC);
541 		skb_put_u8(input, 165);
542 		skb_put(input, 165);
543 	}
544 
545 	/* fragment STA profile */
546 	ieee80211_fragment_element(input, len_prof,
547 				   IEEE80211_MLE_SUBELEM_FRAGMENT);
548 	/* fragment MLE */
549 	ieee80211_fragment_element(input, len_mle, WLAN_EID_FRAGMENT);
550 
551 	/* Put a (vendor) element after the ML element */
552 	skb_put_u8(input, WLAN_EID_VENDOR_SPECIFIC);
553 	skb_put_u8(input, 155);
554 	skb_put(input, 155);
555 
556 	/* Submit *************************************************************/
557 	bss = cfg80211_inform_bss_data(wiphy, &inform_bss,
558 				       CFG80211_BSS_FTYPE_PRESP, bssid, tsf,
559 				       capability, beacon_int,
560 				       input->data, input->len,
561 				       GFP_KERNEL);
562 	KUNIT_EXPECT_NOT_NULL(test, bss);
563 	KUNIT_EXPECT_EQ(test, ctx.inform_bss_count, 2);
564 
565 	/* Check link_bss *****************************************************/
566 	link_bss = cfg80211_get_bss(wiphy, NULL, sta_prof.bssid, NULL, 0,
567 				    IEEE80211_BSS_TYPE_ANY,
568 				    IEEE80211_PRIVACY_ANY);
569 	KUNIT_ASSERT_NOT_NULL(test, link_bss);
570 	KUNIT_EXPECT_EQ(test, link_bss->signal, 0);
571 	KUNIT_EXPECT_EQ(test, link_bss->beacon_interval,
572 			      le16_to_cpu(sta_prof.beacon_int));
573 	KUNIT_EXPECT_EQ(test, link_bss->capability,
574 			      le16_to_cpu(sta_prof.capabilities));
575 	KUNIT_EXPECT_EQ(test, link_bss->bssid_index, 0);
576 	KUNIT_EXPECT_PTR_EQ(test, link_bss->channel,
577 			    ieee80211_get_channel_khz(wiphy, MHZ_TO_KHZ(2462)));
578 
579 	rcu_read_lock();
580 	ies = rcu_dereference(link_bss->ies);
581 	KUNIT_EXPECT_NOT_NULL(test, ies);
582 	KUNIT_EXPECT_EQ(test, ies->tsf, tsf + le64_to_cpu(sta_prof.tsf_offset));
583 	/* Resulting length should be:
584 	 * SSID (inherited) + RNR (inherited) + vendor element(s) +
585 	 * MLE common info + MLE header and control
586 	 */
587 	if (params->sta_prof_vendor_elems)
588 		KUNIT_EXPECT_EQ(test, ies->len,
589 				6 + 2 + sizeof(rnr) + 2 + 160 + 2 + 165 +
590 				mle_basic_common_info.var_len + 5);
591 	else
592 		KUNIT_EXPECT_EQ(test, ies->len,
593 				6 + 2 + sizeof(rnr) + 2 + 155 +
594 				mle_basic_common_info.var_len + 5);
595 	rcu_read_unlock();
596 
597 	cfg80211_put_bss(wiphy, bss);
598 	cfg80211_put_bss(wiphy, link_bss);
599 }
600 
601 static struct kunit_case gen_new_ie_test_cases[] = {
602 	KUNIT_CASE_PARAM(test_gen_new_ie, gen_new_ie_gen_params),
603 	KUNIT_CASE(test_gen_new_ie_malformed),
604 	{}
605 };
606 
607 static struct kunit_suite gen_new_ie = {
608 	.name = "cfg80211-ie-generation",
609 	.test_cases = gen_new_ie_test_cases,
610 };
611 
612 kunit_test_suite(gen_new_ie);
613 
614 static struct kunit_case inform_bss_test_cases[] = {
615 	KUNIT_CASE(test_inform_bss_ssid_only),
616 	KUNIT_CASE_PARAM(test_inform_bss_ml_sta, inform_bss_ml_sta_gen_params),
617 	{}
618 };
619 
620 static struct kunit_suite inform_bss = {
621 	.name = "cfg80211-inform-bss",
622 	.test_cases = inform_bss_test_cases,
623 };
624 
625 kunit_test_suite(inform_bss);
626