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[thirdparty/hostap.git] / wlantest / rx_data.c
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2d73f0a8
JM		 1/*
2 * Received Data frame processing
98cd3d1c 3 * Copyright (c) 2010-2015, Jouni Malinen <j@w1.fi>
2d73f0a8 4 *
0f3d578e
JM		 5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
2d73f0a8
JM		 7 */
8
9#include "utils/includes.h"
10
11#include "utils/common.h"
a9dd29d3 12#include "common/defs.h"
2d73f0a8
JM		 13#include "common/ieee802_11_defs.h"
14#include "wlantest.h"
a0530dff 15
2d73f0a8
JM		 16
17static const char * data_stype(u16 stype)
18{
19 switch (stype) {
20 case WLAN_FC_STYPE_DATA:
21 return "DATA";
22 case WLAN_FC_STYPE_DATA_CFACK:
23 return "DATA-CFACK";
24 case WLAN_FC_STYPE_DATA_CFPOLL:
25 return "DATA-CFPOLL";
26 case WLAN_FC_STYPE_DATA_CFACKPOLL:
27 return "DATA-CFACKPOLL";
28 case WLAN_FC_STYPE_NULLFUNC:
29 return "NULLFUNC";
30 case WLAN_FC_STYPE_CFACK:
31 return "CFACK";
32 case WLAN_FC_STYPE_CFPOLL:
33 return "CFPOLL";
34 case WLAN_FC_STYPE_CFACKPOLL:
35 return "CFACKPOLL";
36 case WLAN_FC_STYPE_QOS_DATA:
37 return "QOSDATA";
38 case WLAN_FC_STYPE_QOS_DATA_CFACK:
39 return "QOSDATA-CFACK";
40 case WLAN_FC_STYPE_QOS_DATA_CFPOLL:
41 return "QOSDATA-CFPOLL";
42 case WLAN_FC_STYPE_QOS_DATA_CFACKPOLL:
43 return "QOSDATA-CFACKPOLL";
44 case WLAN_FC_STYPE_QOS_NULL:
45 return "QOS-NULL";
46 case WLAN_FC_STYPE_QOS_CFPOLL:
47 return "QOS-CFPOLL";
48 case WLAN_FC_STYPE_QOS_CFACKPOLL:
49 return "QOS-CFACKPOLL";
50 }
51 return "??";
52}
53
54
ee3b84be
JM		 55static void rx_data_eth(struct wlantest *wt, const u8 *bssid,
56 const u8 *sta_addr, const u8 *dst, const u8 *src,
244c9303
JM		 57 u16 ethertype, const u8 *data, size_t len, int prot,
58 const u8 *peer_addr)
32234bba 59{
ee3b84be
JM		 60 switch (ethertype) {
61 case ETH_P_PAE:
6d014ffc 62 rx_data_eapol(wt, bssid, sta_addr, dst, src, data, len, prot);
ee3b84be
JM		 63 break;
64 case ETH_P_IP:
244c9303
JM		 65 rx_data_ip(wt, bssid, sta_addr, dst, src, data, len,
66 peer_addr);
ee3b84be 67 break;
b39f5834
JM		 68 case 0x890d:
69 rx_data_80211_encap(wt, bssid, sta_addr, dst, src, data, len);
70 break;
ee3b84be 71 }
32234bba
JM		 72}
73
74
ee3b84be
JM		 75static void rx_data_process(struct wlantest *wt, const u8 *bssid,
76 const u8 *sta_addr,
77 const u8 *dst, const u8 *src,
244c9303
JM		 78 const u8 *data, size_t len, int prot,
79 const u8 *peer_addr)
32234bba 80{
4bc82fc7
JM		 81 if (len == 0)
82 return;
83
32234bba 84 if (len >= 8 && os_memcmp(data, "\xaa\xaa\x03\x00\x00\x00", 6) == 0) {
ee3b84be 85 rx_data_eth(wt, bssid, sta_addr, dst, src,
244c9303
JM		 86 WPA_GET_BE16(data + 6), data + 8, len - 8, prot,
87 peer_addr);
32234bba
JM		 88 return;
89 }
90
4bc82fc7 91 wpa_hexdump(MSG_DEBUG, "Unrecognized LLC", data, len > 8 ? 8 : len);
32234bba
JM		 92}
93
94
a0530dff
JM		 95static u8 * try_all_ptk(struct wlantest *wt, int pairwise_cipher,
96 const struct ieee80211_hdr *hdr,
97 const u8 *data, size_t data_len, size_t *decrypted_len)
98{
99 struct wlantest_ptk *ptk;
100 u8 *decrypted;
101 int prev_level = wpa_debug_level;
102
103 wpa_debug_level = MSG_WARNING;
104 dl_list_for_each(ptk, &wt->ptk, struct wlantest_ptk, list) {
eb2223e0 105 unsigned int tk_len = ptk->ptk_len - 32;
a0530dff
JM		 106 decrypted = NULL;
107 if ((pairwise_cipher == WPA_CIPHER_CCMP ||
eb2223e0 108 pairwise_cipher == 0) && tk_len == 16) {
98cd3d1c 109 decrypted = ccmp_decrypt(ptk->ptk.tk, hdr, data,
a0530dff 110 data_len, decrypted_len);
eb2223e0
AKP		 111 } else if ((pairwise_cipher == WPA_CIPHER_CCMP_256 ||
112 pairwise_cipher == 0) && tk_len == 32) {
98cd3d1c 113 decrypted = ccmp_256_decrypt(ptk->ptk.tk, hdr, data,
eb2223e0
AKP		 114 data_len, decrypted_len);
115 } else if ((pairwise_cipher == WPA_CIPHER_GCMP ||
116 pairwise_cipher == WPA_CIPHER_GCMP_256 ||
117 pairwise_cipher == 0) &&
118 (tk_len == 16 || tk_len == 32)) {
98cd3d1c 119 decrypted = gcmp_decrypt(ptk->ptk.tk, tk_len, hdr,
eb2223e0
AKP		 120 data, data_len, decrypted_len);
121 } else if ((pairwise_cipher == WPA_CIPHER_TKIP ||
122 pairwise_cipher == 0) && tk_len == 32) {
98cd3d1c 123 decrypted = tkip_decrypt(ptk->ptk.tk, hdr, data,
a0530dff
JM		 124 data_len, decrypted_len);
125 }
126 if (decrypted) {
127 wpa_debug_level = prev_level;
128 add_note(wt, MSG_DEBUG, "Found PTK match from list of all known PTKs");
129 return decrypted;
130 }
131 }
132 wpa_debug_level = prev_level;
133
134 return NULL;
135}
136
137
d318c534
JM		 138static void rx_data_bss_prot_group(struct wlantest *wt,
139 const struct ieee80211_hdr *hdr,
140 const u8 *qos, const u8 *dst, const u8 *src,
141 const u8 *data, size_t len)
142{
143 struct wlantest_bss *bss;
144 int keyid;
eb2223e0 145 u8 *decrypted = NULL;
07d0a5be 146 size_t dlen;
2edd5c23 147 u8 pn[6];
d318c534
JM		 148
149 bss = bss_get(wt, hdr->addr2);
150 if (bss == NULL)
151 return;
152 if (len < 4) {
e4d99217 153 add_note(wt, MSG_INFO, "Too short group addressed data frame");
d318c534
JM		 154 return;
155 }
156
20062114
JM		 157 if (bss->group_cipher & (WPA_CIPHER_TKIP | WPA_CIPHER_CCMP) &&
158 !(data[3] & 0x20)) {
e4d99217
JM		 159 add_note(wt, MSG_INFO, "Expected TKIP/CCMP frame from "
160 MACSTR " did not have ExtIV bit set to 1",
161 MAC2STR(bss->bssid));
162 return;
20062114
JM		 163 }
164
16b8b6ea
JM		 165 if (bss->group_cipher == WPA_CIPHER_TKIP) {
166 if (data[3] & 0x1f) {
e4d99217
JM		 167 add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
168 " used non-zero reserved bit",
169 MAC2STR(bss->bssid));
16b8b6ea
JM		 170 }
171 if (data[1] != ((data[0] | 0x20) & 0x7f)) {
e4d99217
JM		 172 add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
173 " used incorrect WEPSeed[1] (was 0x%x, "
174 "expected 0x%x)",
175 MAC2STR(bss->bssid), data[1],
176 (data[0] | 0x20) & 0x7f);
16b8b6ea
JM		 177 }
178 } else if (bss->group_cipher == WPA_CIPHER_CCMP) {
179 if (data[2] != 0 || (data[3] & 0x1f) != 0) {
e4d99217
JM		 180 add_note(wt, MSG_INFO, "CCMP frame from " MACSTR
181 " used non-zero reserved bit",
182 MAC2STR(bss->bssid));
16b8b6ea
JM		 183 }
184 }
185
d318c534 186 keyid = data[3] >> 6;
2e479416
JM		 187 if (bss->gtk_len[keyid] == 0 && bss->group_cipher != WPA_CIPHER_WEP40)
188 {
e4d99217
JM		 189 add_note(wt, MSG_MSGDUMP, "No GTK known to decrypt the frame "
190 "(A2=" MACSTR " KeyID=%d)",
191 MAC2STR(hdr->addr2), keyid);
d318c534
JM		 192 return;
193 }
194
4dac8453
JM		 195 if (bss->group_cipher == WPA_CIPHER_TKIP)
196 tkip_get_pn(pn, data);
2e479416
JM		 197 else if (bss->group_cipher == WPA_CIPHER_WEP40)
198 goto skip_replay_det;
4dac8453
JM		 199 else
200 ccmp_get_pn(pn, data);
2edd5c23 201 if (os_memcmp(pn, bss->rsc[keyid], 6) <= 0) {
01b397dd 202 u16 seq_ctrl = le_to_host16(hdr->seq_ctrl);
e4d99217 203 add_note(wt, MSG_INFO, "CCMP/TKIP replay detected: A1=" MACSTR
3a3cb8ee 204 " A2=" MACSTR " A3=" MACSTR " seq=%u frag=%u%s",
e4d99217
JM		 205 MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
206 MAC2STR(hdr->addr3),
207 WLAN_GET_SEQ_SEQ(seq_ctrl),
3a3cb8ee
AKP		 208 WLAN_GET_SEQ_FRAG(seq_ctrl),
209 (le_to_host16(hdr->frame_control) & WLAN_FC_RETRY) ?
210 " Retry" : "");
2edd5c23
JM		 211 wpa_hexdump(MSG_INFO, "RX PN", pn, 6);
212 wpa_hexdump(MSG_INFO, "RSC", bss->rsc[keyid], 6);
213 }
214
2e479416 215skip_replay_det:
2924b0eb
JM		 216 if (bss->group_cipher == WPA_CIPHER_TKIP)
217 decrypted = tkip_decrypt(bss->gtk[keyid], hdr, data, len,
218 &dlen);
2e479416
JM		 219 else if (bss->group_cipher == WPA_CIPHER_WEP40)
220 decrypted = wep_decrypt(wt, hdr, data, len, &dlen);
eb2223e0 221 else if (bss->group_cipher == WPA_CIPHER_CCMP)
2924b0eb
JM		 222 decrypted = ccmp_decrypt(bss->gtk[keyid], hdr, data, len,
223 &dlen);
eb2223e0
AKP		 224 else if (bss->group_cipher == WPA_CIPHER_CCMP_256)
225 decrypted = ccmp_256_decrypt(bss->gtk[keyid], hdr, data, len,
226 &dlen);
227 else if (bss->group_cipher == WPA_CIPHER_GCMP ||
228 bss->group_cipher == WPA_CIPHER_GCMP_256)
229 decrypted = gcmp_decrypt(bss->gtk[keyid], bss->gtk_len[keyid],
230 hdr, data, len, &dlen);
231
2edd5c23 232 if (decrypted) {
ee3b84be 233 rx_data_process(wt, bss->bssid, NULL, dst, src, decrypted,
244c9303 234 dlen, 1, NULL);
2edd5c23 235 os_memcpy(bss->rsc[keyid], pn, 6);
64f45d07
JM		 236 write_pcap_decrypted(wt, (const u8 *) hdr, 24 + (qos ? 2 : 0),
237 decrypted, dlen);
e4d99217
JM		 238 } else
239 add_note(wt, MSG_DEBUG, "Failed to decrypt frame");
07d0a5be 240 os_free(decrypted);
d318c534
JM		 241}
242
243
32234bba
JM		 244static void rx_data_bss_prot(struct wlantest *wt,
245 const struct ieee80211_hdr *hdr, const u8 *qos,
246 const u8 *dst, const u8 *src, const u8 *data,
247 size_t len)
248{
d318c534 249 struct wlantest_bss *bss;
b39f5834 250 struct wlantest_sta *sta, *sta2;
d318c534
JM		 251 int keyid;
252 u16 fc = le_to_host16(hdr->frame_control);
253 u8 *decrypted;
254 size_t dlen;
2edd5c23
JM		 255 int tid;
256 u8 pn[6], *rsc;
ace4e460 257 struct wlantest_tdls *tdls = NULL, *found;
b39f5834 258 const u8 *tk = NULL;
a0530dff
JM		 259 int ptk_iter_done = 0;
260 int try_ptk_iter = 0;
d318c534
JM		 261
262 if (hdr->addr1[0] & 0x01) {
263 rx_data_bss_prot_group(wt, hdr, qos, dst, src, data, len);
264 return;
265 }
266
267 if (fc & WLAN_FC_TODS) {
268 bss = bss_get(wt, hdr->addr1);
269 if (bss == NULL)
270 return;
271 sta = sta_get(bss, hdr->addr2);
0a9ddd92
JM		 272 if (sta)
273 sta->counters[WLANTEST_STA_COUNTER_PROT_DATA_TX]++;
b39f5834 274 } else if (fc & WLAN_FC_FROMDS) {
d318c534
JM		 275 bss = bss_get(wt, hdr->addr2);
276 if (bss == NULL)
277 return;
278 sta = sta_get(bss, hdr->addr1);
b39f5834
JM		 279 } else {
280 bss = bss_get(wt, hdr->addr3);
281 if (bss == NULL)
282 return;
283 sta = sta_find(bss, hdr->addr2);
284 sta2 = sta_find(bss, hdr->addr1);
285 if (sta == NULL || sta2 == NULL)
286 return;
ace4e460 287 found = NULL;
b39f5834
JM		 288 dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list)
289 {
290 if ((tdls->init == sta && tdls->resp == sta2) ||
291 (tdls->init == sta2 && tdls->resp == sta)) {
ace4e460
JM		 292 found = tdls;
293 if (tdls->link_up)
294 break;
b39f5834
JM		 295 }
296 }
ace4e460
JM		 297 if (found) {
298 if (!found->link_up)
299 add_note(wt, MSG_DEBUG,
300 "TDLS: Link not up, but Data "
301 "frame seen");
302 tk = found->tpk.tk;
303 tdls = found;
304 }
d318c534 305 }
2e479416
JM		 306 if ((sta == NULL ||
307 (!sta->ptk_set && sta->pairwise_cipher != WPA_CIPHER_WEP40)) &&
308 tk == NULL) {
e4d99217 309 add_note(wt, MSG_MSGDUMP, "No PTK known to decrypt the frame");
a0530dff
JM		 310 if (dl_list_empty(&wt->ptk))
311 return;
312 try_ptk_iter = 1;
d318c534
JM		 313 }
314
315 if (len < 4) {
e4d99217 316 add_note(wt, MSG_INFO, "Too short encrypted data frame");
d318c534
JM		 317 return;
318 }
319
99d7c1de
JM		 320 if (sta == NULL)
321 return;
20062114
JM		 322 if (sta->pairwise_cipher & (WPA_CIPHER_TKIP | WPA_CIPHER_CCMP) &&
323 !(data[3] & 0x20)) {
e4d99217
JM		 324 add_note(wt, MSG_INFO, "Expected TKIP/CCMP frame from "
325 MACSTR " did not have ExtIV bit set to 1",
326 MAC2STR(src));
327 return;
20062114
JM		 328 }
329
b39f5834 330 if (tk == NULL && sta->pairwise_cipher == WPA_CIPHER_TKIP) {
16b8b6ea 331 if (data[3] & 0x1f) {
e4d99217
JM		 332 add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
333 " used non-zero reserved bit",
334 MAC2STR(hdr->addr2));
16b8b6ea
JM		 335 }
336 if (data[1] != ((data[0] | 0x20) & 0x7f)) {
e4d99217
JM		 337 add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
338 " used incorrect WEPSeed[1] (was 0x%x, "
339 "expected 0x%x)",
340 MAC2STR(hdr->addr2), data[1],
341 (data[0] | 0x20) & 0x7f);
16b8b6ea 342 }
b39f5834 343 } else if (tk || sta->pairwise_cipher == WPA_CIPHER_CCMP) {
16b8b6ea 344 if (data[2] != 0 || (data[3] & 0x1f) != 0) {
e4d99217
JM		 345 add_note(wt, MSG_INFO, "CCMP frame from " MACSTR
346 " used non-zero reserved bit",
347 MAC2STR(hdr->addr2));
16b8b6ea
JM		 348 }
349 }
350
d318c534
JM		 351 keyid = data[3] >> 6;
352 if (keyid != 0) {
e4d99217
JM		 353 add_note(wt, MSG_INFO, "Unexpected non-zero KeyID %d in "
354 "individually addressed Data frame from " MACSTR,
355 keyid, MAC2STR(hdr->addr2));
d318c534
JM		 356 }
357
99d7c1de 358 if (qos) {
2edd5c23 359 tid = qos[0] & 0x0f;
99d7c1de
JM		 360 if (fc & WLAN_FC_TODS)
361 sta->tx_tid[tid]++;
362 else
363 sta->rx_tid[tid]++;
364 } else {
2edd5c23 365 tid = 0;
99d7c1de
JM		 366 if (fc & WLAN_FC_TODS)
367 sta->tx_tid[16]++;
368 else
369 sta->rx_tid[16]++;
370 }
b39f5834
JM		 371 if (tk) {
372 if (os_memcmp(hdr->addr2, tdls->init->addr, ETH_ALEN) == 0)
373 rsc = tdls->rsc_init[tid];
374 else
375 rsc = tdls->rsc_resp[tid];
376 } else if (fc & WLAN_FC_TODS)
2edd5c23
JM		 377 rsc = sta->rsc_tods[tid];
378 else
379 rsc = sta->rsc_fromds[tid];
380
381
b39f5834 382 if (tk == NULL && sta->pairwise_cipher == WPA_CIPHER_TKIP)
4dac8453 383 tkip_get_pn(pn, data);
2e479416
JM		 384 else if (sta->pairwise_cipher == WPA_CIPHER_WEP40)
385 goto skip_replay_det;
4dac8453
JM		 386 else
387 ccmp_get_pn(pn, data);
2edd5c23 388 if (os_memcmp(pn, rsc, 6) <= 0) {
01b397dd 389 u16 seq_ctrl = le_to_host16(hdr->seq_ctrl);
e4d99217 390 add_note(wt, MSG_INFO, "CCMP/TKIP replay detected: A1=" MACSTR
3a3cb8ee 391 " A2=" MACSTR " A3=" MACSTR " seq=%u frag=%u%s",
e4d99217
JM		 392 MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
393 MAC2STR(hdr->addr3),
394 WLAN_GET_SEQ_SEQ(seq_ctrl),
3a3cb8ee
AKP		 395 WLAN_GET_SEQ_FRAG(seq_ctrl),
396 (le_to_host16(hdr->frame_control) & WLAN_FC_RETRY) ?
397 " Retry" : "");
2edd5c23
JM		 398 wpa_hexdump(MSG_INFO, "RX PN", pn, 6);
399 wpa_hexdump(MSG_INFO, "RSC", rsc, 6);
400 }
401
2e479416 402skip_replay_det:
eb2223e0
AKP		 403 if (tk) {
404 if (sta->pairwise_cipher == WPA_CIPHER_CCMP_256)
405 decrypted = ccmp_256_decrypt(tk, hdr, data, len, &dlen);
406 else if (sta->pairwise_cipher == WPA_CIPHER_GCMP ||
407 sta->pairwise_cipher == WPA_CIPHER_GCMP_256)
408 decrypted = gcmp_decrypt(tk, sta->tk_len, hdr, data,
409 len, &dlen);
410 else
411 decrypted = ccmp_decrypt(tk, hdr, data, len, &dlen);
412 } else if (sta->pairwise_cipher == WPA_CIPHER_TKIP) {
98cd3d1c 413 decrypted = tkip_decrypt(sta->ptk.tk, hdr, data, len, &dlen);
eb2223e0 414 } else if (sta->pairwise_cipher == WPA_CIPHER_WEP40) {
2e479416 415 decrypted = wep_decrypt(wt, hdr, data, len, &dlen);
eb2223e0
AKP		 416 } else if (sta->ptk_set) {
417 if (sta->pairwise_cipher == WPA_CIPHER_CCMP_256)
98cd3d1c 418 decrypted = ccmp_256_decrypt(sta->ptk.tk, hdr, data,
eb2223e0
AKP		 419 len, &dlen);
420 else if (sta->pairwise_cipher == WPA_CIPHER_GCMP ||
421 sta->pairwise_cipher == WPA_CIPHER_GCMP_256)
98cd3d1c 422 decrypted = gcmp_decrypt(sta->ptk.tk, sta->tk_len,
eb2223e0
AKP		 423 hdr, data, len, &dlen);
424 else
98cd3d1c 425 decrypted = ccmp_decrypt(sta->ptk.tk, hdr, data, len,
eb2223e0
AKP		 426 &dlen);
427 } else {
a0530dff
JM		 428 decrypted = try_all_ptk(wt, sta->pairwise_cipher, hdr, data,
429 len, &dlen);
430 ptk_iter_done = 1;
431 }
432 if (!decrypted && !ptk_iter_done) {
433 decrypted = try_all_ptk(wt, sta->pairwise_cipher, hdr, data,
434 len, &dlen);
435 if (decrypted) {
436 add_note(wt, MSG_DEBUG, "Current PTK did not work, but found a match from all known PTKs");
437 }
438 }
2edd5c23 439 if (decrypted) {
244c9303 440 u16 fc = le_to_host16(hdr->frame_control);
9559a7f8 441 const u8 *peer_addr = NULL;
244c9303
JM		 442 if (!(fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)))
443 peer_addr = hdr->addr1;
d0b251d2 444 os_memcpy(rsc, pn, 6);
ee3b84be 445 rx_data_process(wt, bss->bssid, sta->addr, dst, src, decrypted,
244c9303 446 dlen, 1, peer_addr);
64f45d07
JM		 447 write_pcap_decrypted(wt, (const u8 *) hdr, 24 + (qos ? 2 : 0),
448 decrypted, dlen);
a0530dff 449 } else if (!try_ptk_iter)
e4d99217 450 add_note(wt, MSG_DEBUG, "Failed to decrypt frame");
d318c534 451 os_free(decrypted);
32234bba
JM		 452}
453
454
455static void rx_data_bss(struct wlantest *wt, const struct ieee80211_hdr *hdr,
456 const u8 *qos, const u8 *dst, const u8 *src,
457 const u8 *data, size_t len)
458{
459 u16 fc = le_to_host16(hdr->frame_control);
460 int prot = !!(fc & WLAN_FC_ISWEP);
461
462 if (qos) {
463 u8 ack = (qos[0] & 0x60) >> 5;
464 wpa_printf(MSG_MSGDUMP, "BSS DATA: " MACSTR " -> " MACSTR
465 " len=%u%s tid=%u%s%s",
466 MAC2STR(src), MAC2STR(dst), (unsigned int) len,
467 prot ? " Prot" : "", qos[0] & 0x0f,
468 (qos[0] & 0x10) ? " EOSP" : "",
469 ack == 0 ? "" :
470 (ack == 1 ? " NoAck" :
471 (ack == 2 ? " NoExpAck" : " BA")));
472 } else {
473 wpa_printf(MSG_MSGDUMP, "BSS DATA: " MACSTR " -> " MACSTR
474 " len=%u%s",
475 MAC2STR(src), MAC2STR(dst), (unsigned int) len,
476 prot ? " Prot" : "");
477 }
478
479 if (prot)
480 rx_data_bss_prot(wt, hdr, qos, dst, src, data, len);
ee3b84be 481 else {
244c9303 482 const u8 *bssid, *sta_addr, *peer_addr;
99d7c1de
JM		 483 struct wlantest_bss *bss;
484
ee3b84be
JM		 485 if (fc & WLAN_FC_TODS) {
486 bssid = hdr->addr1;
487 sta_addr = hdr->addr2;
244c9303
JM		 488 peer_addr = NULL;
489 } else if (fc & WLAN_FC_FROMDS) {
ee3b84be
JM		 490 bssid = hdr->addr2;
491 sta_addr = hdr->addr1;
244c9303
JM		 492 peer_addr = NULL;
493 } else {
494 bssid = hdr->addr3;
495 sta_addr = hdr->addr2;
496 peer_addr = hdr->addr1;
ee3b84be 497 }
99d7c1de
JM		 498
499 bss = bss_get(wt, bssid);
500 if (bss) {
501 struct wlantest_sta *sta = sta_get(bss, sta_addr);
502
503 if (sta) {
504 if (qos) {
505 int tid = qos[0] & 0x0f;
506 if (fc & WLAN_FC_TODS)
507 sta->tx_tid[tid]++;
508 else
509 sta->rx_tid[tid]++;
510 } else {
511 if (fc & WLAN_FC_TODS)
512 sta->tx_tid[16]++;
513 else
514 sta->rx_tid[16]++;
515 }
516 }
517 }
518
244c9303
JM		 519 rx_data_process(wt, bssid, sta_addr, dst, src, data, len, 0,
520 peer_addr);
ee3b84be 521 }
32234bba
JM		 522}
523
524
0e42fff3
JM		 525static struct wlantest_tdls * get_tdls(struct wlantest *wt, const u8 *bssid,
526 const u8 *sta1_addr,
527 const u8 *sta2_addr)
528{
529 struct wlantest_bss *bss;
530 struct wlantest_sta *sta1, *sta2;
ace4e460 531 struct wlantest_tdls *tdls, *found = NULL;
0e42fff3
JM		 532
533 bss = bss_find(wt, bssid);
534 if (bss == NULL)
535 return NULL;
536 sta1 = sta_find(bss, sta1_addr);
537 if (sta1 == NULL)
538 return NULL;
539 sta2 = sta_find(bss, sta2_addr);
540 if (sta2 == NULL)
541 return NULL;
542
543 dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) {
544 if ((tdls->init == sta1 && tdls->resp == sta2) ||
ace4e460
JM		 545 (tdls->init == sta2 && tdls->resp == sta1)) {
546 found = tdls;
547 if (tdls->link_up)
548 break;
549 }
0e42fff3
JM		 550 }
551
ace4e460 552 return found;
0e42fff3
JM		 553}
554
555
556static void add_direct_link(struct wlantest *wt, const u8 *bssid,
557 const u8 *sta1_addr, const u8 *sta2_addr)
558{
559 struct wlantest_tdls *tdls;
560
561 tdls = get_tdls(wt, bssid, sta1_addr, sta2_addr);
562 if (tdls == NULL)
563 return;
564
565 if (tdls->link_up)
566 tdls->counters[WLANTEST_TDLS_COUNTER_VALID_DIRECT_LINK]++;
567 else
568 tdls->counters[WLANTEST_TDLS_COUNTER_INVALID_DIRECT_LINK]++;
569}
570
571
572static void add_ap_path(struct wlantest *wt, const u8 *bssid,
573 const u8 *sta1_addr, const u8 *sta2_addr)
574{
575 struct wlantest_tdls *tdls;
576
577 tdls = get_tdls(wt, bssid, sta1_addr, sta2_addr);
578 if (tdls == NULL)
579 return;
580
581 if (tdls->link_up)
582 tdls->counters[WLANTEST_TDLS_COUNTER_INVALID_AP_PATH]++;
583 else
584 tdls->counters[WLANTEST_TDLS_COUNTER_VALID_AP_PATH]++;
585}
586
587
2d73f0a8
JM		 588void rx_data(struct wlantest *wt, const u8 *data, size_t len)
589{
590 const struct ieee80211_hdr *hdr;
32234bba
JM		 591 u16 fc, stype;
592 size_t hdrlen;
593 const u8 *qos = NULL;
2d73f0a8
JM		 594
595 if (len < 24)
596 return;
597
598 hdr = (const struct ieee80211_hdr *) data;
599 fc = le_to_host16(hdr->frame_control);
32234bba
JM		 600 stype = WLAN_FC_GET_STYPE(fc);
601 hdrlen = 24;
602 if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
603 (WLAN_FC_TODS | WLAN_FC_FROMDS))
604 hdrlen += ETH_ALEN;
605 if (stype & 0x08) {
606 qos = data + hdrlen;
607 hdrlen += 2;
608 }
609 if (len < hdrlen)
610 return;
2d73f0a8
JM		 611 wt->rx_data++;
612
613 switch (fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
614 case 0:
615 wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s IBSS DA=" MACSTR " SA="
616 MACSTR " BSSID=" MACSTR,
617 data_stype(WLAN_FC_GET_STYPE(fc)),
618 fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
619 fc & WLAN_FC_ISWEP ? " Prot" : "",
620 MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
621 MAC2STR(hdr->addr3));
0e42fff3 622 add_direct_link(wt, hdr->addr3, hdr->addr1, hdr->addr2);
b39f5834
JM		 623 rx_data_bss(wt, hdr, qos, hdr->addr1, hdr->addr2,
624 data + hdrlen, len - hdrlen);
2d73f0a8
JM		 625 break;
626 case WLAN_FC_FROMDS:
627 wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s FromDS DA=" MACSTR
628 " BSSID=" MACSTR " SA=" MACSTR,
629 data_stype(WLAN_FC_GET_STYPE(fc)),
630 fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
631 fc & WLAN_FC_ISWEP ? " Prot" : "",
632 MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
633 MAC2STR(hdr->addr3));
0e42fff3 634 add_ap_path(wt, hdr->addr2, hdr->addr1, hdr->addr3);
39c14726 635 rx_data_bss(wt, hdr, qos, hdr->addr1, hdr->addr3,
32234bba 636 data + hdrlen, len - hdrlen);
2d73f0a8
JM		 637 break;
638 case WLAN_FC_TODS:
639 wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s ToDS BSSID=" MACSTR
640 " SA=" MACSTR " DA=" MACSTR,
641 data_stype(WLAN_FC_GET_STYPE(fc)),
642 fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
643 fc & WLAN_FC_ISWEP ? " Prot" : "",
644 MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
645 MAC2STR(hdr->addr3));
0e42fff3 646 add_ap_path(wt, hdr->addr1, hdr->addr3, hdr->addr2);
32234bba
JM		 647 rx_data_bss(wt, hdr, qos, hdr->addr3, hdr->addr2,
648 data + hdrlen, len - hdrlen);
2d73f0a8
JM		 649 break;
650 case WLAN_FC_TODS | WLAN_FC_FROMDS:
651 wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s WDS RA=" MACSTR " TA="
652 MACSTR " DA=" MACSTR " SA=" MACSTR,
653 data_stype(WLAN_FC_GET_STYPE(fc)),
654 fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
655 fc & WLAN_FC_ISWEP ? " Prot" : "",
656 MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
657 MAC2STR(hdr->addr3),
658 MAC2STR((const u8 *) (hdr + 1)));
659 break;
660 }
661}
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