1 /*-
2 * Copyright (c) 2020-2023 The FreeBSD Foundation
3 * Copyright (c) 2020-2022 Bjoern A. Zeeb
4 *
5 * This software was developed by Björn Zeeb under sponsorship from
6 * the FreeBSD Foundation.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 /*
31 * Public functions are called linuxkpi_*().
32 * Internal (static) functions are called lkpi_*().
33 *
34 * The internal structures holding metadata over public structures are also
35 * called lkpi_xxx (usually with a member at the end called xxx).
36 * Note: we do not replicate the structure names but the general variable names
37 * for these (e.g., struct hw -> struct lkpi_hw, struct sta -> struct lkpi_sta).
38 * There are macros to access one from the other.
39 * We call the internal versions lxxx (e.g., hw -> lhw, sta -> lsta).
40 */
41
42 #include <sys/param.h>
43 #include <sys/types.h>
44 #include <sys/kernel.h>
45 #include <sys/errno.h>
46 #include <sys/malloc.h>
47 #include <sys/module.h>
48 #include <sys/mutex.h>
49 #include <sys/socket.h>
50 #include <sys/sysctl.h>
51 #include <sys/queue.h>
52 #include <sys/taskqueue.h>
53 #include <sys/libkern.h>
54
55 #include <net/if.h>
56 #include <net/if_var.h>
57 #include <net/if_media.h>
58 #include <net/ethernet.h>
59
60 #include <net80211/ieee80211_var.h>
61 #include <net80211/ieee80211_proto.h>
62 #include <net80211/ieee80211_ratectl.h>
63 #include <net80211/ieee80211_radiotap.h>
64 #include <net80211/ieee80211_vht.h>
65
66 #define LINUXKPI_NET80211
67 #include <net/mac80211.h>
68
69 #include <linux/workqueue.h>
70 #include "linux_80211.h"
71
72 #define LKPI_80211_WME
73 /* #define LKPI_80211_HW_CRYPTO */
74 /* #define LKPI_80211_VHT */
75 /* #define LKPI_80211_HT */
76 #if defined(LKPI_80211_VHT) && !defined(LKPI_80211_HT)
77 #define LKPI_80211_HT
78 #endif
79
80 static MALLOC_DEFINE(M_LKPI80211, "lkpi80211", "LinuxKPI 80211 compat");
81
82 /* XXX-BZ really want this and others in queue.h */
83 #define TAILQ_ELEM_INIT(elm, field) do { \
84 (elm)->field.tqe_next = NULL; \
85 (elm)->field.tqe_prev = NULL; \
86 } while (0)
87
88 /* -------------------------------------------------------------------------- */
89
90 /* Keep public for as long as header files are using it too. */
91 int linuxkpi_debug_80211;
92
93 #ifdef LINUXKPI_DEBUG_80211
94 SYSCTL_DECL(_compat_linuxkpi);
95 SYSCTL_NODE(_compat_linuxkpi, OID_AUTO, 80211, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
96 "LinuxKPI 802.11 compatibility layer");
97
98 SYSCTL_INT(_compat_linuxkpi_80211, OID_AUTO, debug, CTLFLAG_RWTUN,
99 &linuxkpi_debug_80211, 0, "LinuxKPI 802.11 debug level");
100
101 #define UNIMPLEMENTED if (linuxkpi_debug_80211 & D80211_TODO) \
102 printf("XXX-TODO %s:%d: UNIMPLEMENTED\n", __func__, __LINE__)
103 #define TRACEOK() if (linuxkpi_debug_80211 & D80211_TRACEOK) \
104 printf("XXX-TODO %s:%d: TRACEPOINT\n", __func__, __LINE__)
105 #else
106 #define UNIMPLEMENTED do { } while (0)
107 #define TRACEOK() do { } while (0)
108 #endif
109
110 /* #define PREP_TX_INFO_DURATION (IEEE80211_TRANS_WAIT * 1000) */
111 #ifndef PREP_TX_INFO_DURATION
112 #define PREP_TX_INFO_DURATION 0 /* Let the driver do its thing. */
113 #endif
114
115 /* This is DSAP | SSAP | CTRL | ProtoID/OrgCode{3}. */
116 const uint8_t rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
117
118 /* IEEE 802.11-05/0257r1 */
119 const uint8_t bridge_tunnel_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
120
121 /* IEEE 802.11e Table 20i-UP-to-AC mappings. */
122 static const uint8_t ieee80211e_up_to_ac[] = {
123 IEEE80211_AC_BE,
124 IEEE80211_AC_BK,
125 IEEE80211_AC_BK,
126 IEEE80211_AC_BE,
127 IEEE80211_AC_VI,
128 IEEE80211_AC_VI,
129 IEEE80211_AC_VO,
130 IEEE80211_AC_VO,
131 #if 0
132 IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */
133 #endif
134 };
135
136 const struct cfg80211_ops linuxkpi_mac80211cfgops = {
137 /*
138 * XXX TODO need a "glue layer" to link cfg80211 ops to
139 * mac80211 and to the driver or net80211.
140 * Can we pass some on 1:1? Need to compare the (*f)().
141 */
142 };
143
144 #if 0
145 static struct lkpi_sta *lkpi_find_lsta_by_ni(struct lkpi_vif *,
146 struct ieee80211_node *);
147 #endif
148 static void lkpi_80211_txq_tx_one(struct lkpi_sta *, struct mbuf *);
149 static void lkpi_80211_txq_task(void *, int);
150 static void lkpi_80211_lhw_rxq_task(void *, int);
151 static void lkpi_ieee80211_free_skb_mbuf(void *);
152 #ifdef LKPI_80211_WME
153 static int lkpi_wme_update(struct lkpi_hw *, struct ieee80211vap *, bool);
154 #endif
155
156 #if defined(LKPI_80211_HT)
157 static void
lkpi_sta_sync_ht_from_ni(struct ieee80211_sta * sta,struct ieee80211_node * ni,int * ht_rx_nss)158 lkpi_sta_sync_ht_from_ni(struct ieee80211_sta *sta, struct ieee80211_node *ni, int *ht_rx_nss)
159 {
160 struct ieee80211vap *vap;
161 uint8_t *ie;
162 struct ieee80211_ht_cap *htcap;
163 int i, rx_nss;
164
165 if ((ni->ni_flags & IEEE80211_NODE_HT) == 0)
166 return;
167
168 if (IEEE80211_IS_CHAN_HT(ni->ni_chan) &&
169 IEEE80211_IS_CHAN_HT40(ni->ni_chan))
170 sta->deflink.bandwidth = IEEE80211_STA_RX_BW_40;
171
172 sta->deflink.ht_cap.ht_supported = true;
173
174 /* htcap->ampdu_params_info */
175 vap = ni->ni_vap;
176 sta->deflink.ht_cap.ampdu_density = _IEEE80211_MASKSHIFT(ni->ni_htparam, IEEE80211_HTCAP_MPDUDENSITY);
177 if (sta->deflink.ht_cap.ampdu_density > vap->iv_ampdu_density)
178 sta->deflink.ht_cap.ampdu_density = vap->iv_ampdu_density;
179 sta->deflink.ht_cap.ampdu_factor = _IEEE80211_MASKSHIFT(ni->ni_htparam, IEEE80211_HTCAP_MAXRXAMPDU);
180 if (sta->deflink.ht_cap.ampdu_factor > vap->iv_ampdu_rxmax)
181 sta->deflink.ht_cap.ampdu_factor = vap->iv_ampdu_rxmax;
182
183 ie = ni->ni_ies.htcap_ie;
184 KASSERT(ie != NULL, ("%s: HT but no htcap_ie on ni %p\n", __func__, ni));
185 if (ie[0] == IEEE80211_ELEMID_VENDOR)
186 ie += 4;
187 ie += 2;
188 htcap = (struct ieee80211_ht_cap *)ie;
189 sta->deflink.ht_cap.cap = htcap->cap_info;
190 sta->deflink.ht_cap.mcs = htcap->mcs;
191
192 rx_nss = 0;
193 for (i = 0; i < nitems(htcap->mcs.rx_mask); i++) {
194 if (htcap->mcs.rx_mask[i])
195 rx_nss++;
196 }
197 if (ht_rx_nss != NULL)
198 *ht_rx_nss = rx_nss;
199
200 IMPROVE("sta->wme, sta->deflink.agg.max*");
201 }
202 #endif
203
204 #if defined(LKPI_80211_VHT)
205 static void
lkpi_sta_sync_vht_from_ni(struct ieee80211_sta * sta,struct ieee80211_node * ni,int * vht_rx_nss)206 lkpi_sta_sync_vht_from_ni(struct ieee80211_sta *sta, struct ieee80211_node *ni, int *vht_rx_nss)
207 {
208
209 if ((ni->ni_flags & IEEE80211_NODE_VHT) == 0)
210 return;
211
212 if (IEEE80211_IS_CHAN_VHT(ni->ni_chan)) {
213 #ifdef __notyet__
214 if (IEEE80211_IS_CHAN_VHT80P80(ni->ni_chan)) {
215 sta->deflink.bandwidth = IEEE80211_STA_RX_BW_160; /* XXX? */
216 } else
217 #endif
218 if (IEEE80211_IS_CHAN_VHT160(ni->ni_chan))
219 sta->deflink.bandwidth = IEEE80211_STA_RX_BW_160;
220 else if (IEEE80211_IS_CHAN_VHT80(ni->ni_chan))
221 sta->deflink.bandwidth = IEEE80211_STA_RX_BW_80;
222 }
223
224 IMPROVE("VHT sync ni to sta");
225 return;
226 }
227 #endif
228
229 static void
lkpi_lsta_dump(struct lkpi_sta * lsta,struct ieee80211_node * ni,const char * _f,int _l)230 lkpi_lsta_dump(struct lkpi_sta *lsta, struct ieee80211_node *ni,
231 const char *_f, int _l)
232 {
233
234 #ifdef LINUXKPI_DEBUG_80211
235 if ((linuxkpi_debug_80211 & D80211_TRACE_STA) == 0)
236 return;
237 if (lsta == NULL)
238 return;
239
240 printf("%s:%d lsta %p ni %p sta %p\n",
241 _f, _l, lsta, ni, &lsta->sta);
242 if (ni != NULL)
243 ieee80211_dump_node(NULL, ni);
244 printf("\ttxq_task txq len %d mtx\n", mbufq_len(&lsta->txq));
245 printf("\tkc %p state %d added_to_drv %d in_mgd %d\n",
246 lsta->kc, lsta->state, lsta->added_to_drv, lsta->in_mgd);
247 #endif
248 }
249
250 static void
lkpi_lsta_remove(struct lkpi_sta * lsta,struct lkpi_vif * lvif)251 lkpi_lsta_remove(struct lkpi_sta *lsta, struct lkpi_vif *lvif)
252 {
253
254
255 LKPI_80211_LVIF_LOCK(lvif);
256 KASSERT(lsta->lsta_entry.tqe_prev != NULL,
257 ("%s: lsta %p lsta_entry.tqe_prev %p ni %p\n", __func__,
258 lsta, lsta->lsta_entry.tqe_prev, lsta->ni));
259 TAILQ_REMOVE(&lvif->lsta_head, lsta, lsta_entry);
260 LKPI_80211_LVIF_UNLOCK(lvif);
261 }
262
263 static struct lkpi_sta *
lkpi_lsta_alloc(struct ieee80211vap * vap,const uint8_t mac[IEEE80211_ADDR_LEN],struct ieee80211_hw * hw,struct ieee80211_node * ni)264 lkpi_lsta_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN],
265 struct ieee80211_hw *hw, struct ieee80211_node *ni)
266 {
267 struct lkpi_sta *lsta;
268 struct lkpi_vif *lvif;
269 struct ieee80211_vif *vif;
270 struct ieee80211_sta *sta;
271 int band, i, tid;
272 int ht_rx_nss;
273 int vht_rx_nss;
274
275 lsta = malloc(sizeof(*lsta) + hw->sta_data_size, M_LKPI80211,
276 M_NOWAIT | M_ZERO);
277 if (lsta == NULL)
278 return (NULL);
279
280 lsta->added_to_drv = false;
281 lsta->state = IEEE80211_STA_NOTEXIST;
282 /*
283 * Link the ni to the lsta here without taking a reference.
284 * For one we would have to take the reference in node_init()
285 * as ieee80211_alloc_node() will initialise the refcount after us.
286 * For the other a ni and an lsta are 1:1 mapped and always together
287 * from [ic_]node_alloc() to [ic_]node_free() so we are essentally
288 * using the ni references for the lsta as well despite it being
289 * two separate allocations.
290 */
291 lsta->ni = ni;
292 /* The back-pointer "drv_data" to net80211_node let's us get lsta. */
293 ni->ni_drv_data = lsta;
294
295 lvif = VAP_TO_LVIF(vap);
296 vif = LVIF_TO_VIF(lvif);
297 sta = LSTA_TO_STA(lsta);
298
299 IEEE80211_ADDR_COPY(sta->addr, mac);
300
301 /* TXQ */
302 for (tid = 0; tid < nitems(sta->txq); tid++) {
303 struct lkpi_txq *ltxq;
304
305 /* We are not limiting ourselves to hw.queues here. */
306 ltxq = malloc(sizeof(*ltxq) + hw->txq_data_size,
307 M_LKPI80211, M_NOWAIT | M_ZERO);
308 if (ltxq == NULL)
309 goto cleanup;
310 /* iwlwifi//mvm/sta.c::tid_to_mac80211_ac[] */
311 if (tid == IEEE80211_NUM_TIDS) {
312 if (!ieee80211_hw_check(hw, STA_MMPDU_TXQ)) {
313 free(ltxq, M_LKPI80211);
314 continue;
315 }
316 IMPROVE("AP/if we support non-STA here too");
317 ltxq->txq.ac = IEEE80211_AC_VO;
318 } else {
319 ltxq->txq.ac = ieee80211e_up_to_ac[tid & 7];
320 }
321 ltxq->seen_dequeue = false;
322 ltxq->stopped = false;
323 ltxq->txq.vif = vif;
324 ltxq->txq.tid = tid;
325 ltxq->txq.sta = sta;
326 TAILQ_ELEM_INIT(ltxq, txq_entry);
327 skb_queue_head_init(<xq->skbq);
328 LKPI_80211_LTXQ_LOCK_INIT(ltxq);
329 sta->txq[tid] = <xq->txq;
330 }
331
332 /* Deflink information. */
333 for (band = 0; band < NUM_NL80211_BANDS; band++) {
334 struct ieee80211_supported_band *supband;
335
336 supband = hw->wiphy->bands[band];
337 if (supband == NULL)
338 continue;
339
340 for (i = 0; i < supband->n_bitrates; i++) {
341
342 IMPROVE("Further supband->bitrates[i]* checks?");
343 /* or should we get them from the ni? */
344 sta->deflink.supp_rates[band] |= BIT(i);
345 }
346 }
347
348 sta->deflink.smps_mode = IEEE80211_SMPS_OFF;
349 sta->deflink.bandwidth = IEEE80211_STA_RX_BW_20;
350 sta->deflink.rx_nss = 0;
351
352 ht_rx_nss = 0;
353 #if defined(LKPI_80211_HT)
354 lkpi_sta_sync_ht_from_ni(sta, ni, &ht_rx_nss);
355 #endif
356 vht_rx_nss = 0;
357 #if defined(LKPI_80211_VHT)
358 lkpi_sta_sync_vht_from_ni(sta, ni, &vht_rx_nss);
359 #endif
360
361 sta->deflink.rx_nss = MAX(ht_rx_nss, sta->deflink.rx_nss);
362 sta->deflink.rx_nss = MAX(vht_rx_nss, sta->deflink.rx_nss);
363 IMPROVE("he, ... smps_mode, ..");
364
365 /* Link configuration. */
366 IEEE80211_ADDR_COPY(sta->deflink.addr, sta->addr);
367 sta->link[0] = &sta->deflink;
368 for (i = 1; i < nitems(sta->link); i++) {
369 IMPROVE("more links; only link[0] = deflink currently.");
370 }
371
372 /* Deferred TX path. */
373 LKPI_80211_LSTA_TXQ_LOCK_INIT(lsta);
374 TASK_INIT(&lsta->txq_task, 0, lkpi_80211_txq_task, lsta);
375 mbufq_init(&lsta->txq, IFQ_MAXLEN);
376 lsta->txq_ready = true;
377
378 return (lsta);
379
380 cleanup:
381 for (; tid >= 0; tid--) {
382 struct lkpi_txq *ltxq;
383
384 ltxq = TXQ_TO_LTXQ(sta->txq[tid]);
385 LKPI_80211_LTXQ_LOCK_DESTROY(ltxq);
386 free(sta->txq[tid], M_LKPI80211);
387 }
388 free(lsta, M_LKPI80211);
389 return (NULL);
390 }
391
392 static void
lkpi_lsta_free(struct lkpi_sta * lsta,struct ieee80211_node * ni)393 lkpi_lsta_free(struct lkpi_sta *lsta, struct ieee80211_node *ni)
394 {
395 struct mbuf *m;
396
397 if (lsta->added_to_drv)
398 panic("%s: Trying to free an lsta still known to firmware: "
399 "lsta %p ni %p added_to_drv %d\n",
400 __func__, lsta, ni, lsta->added_to_drv);
401
402 /* XXX-BZ free resources, ... */
403 IMPROVE();
404
405 /* Drain sta->txq[] */
406
407 LKPI_80211_LSTA_TXQ_LOCK(lsta);
408 lsta->txq_ready = false;
409 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
410
411 /* Drain taskq, won't be restarted until added_to_drv is set again. */
412 while (taskqueue_cancel(taskqueue_thread, &lsta->txq_task, NULL) != 0)
413 taskqueue_drain(taskqueue_thread, &lsta->txq_task);
414
415 /* Flush mbufq (make sure to release ni refs!). */
416 m = mbufq_dequeue(&lsta->txq);
417 while (m != NULL) {
418 struct ieee80211_node *nim;
419
420 nim = (struct ieee80211_node *)m->m_pkthdr.rcvif;
421 if (nim != NULL)
422 ieee80211_free_node(nim);
423 m_freem(m);
424 m = mbufq_dequeue(&lsta->txq);
425 }
426 KASSERT(mbufq_empty(&lsta->txq), ("%s: lsta %p has txq len %d != 0\n",
427 __func__, lsta, mbufq_len(&lsta->txq)));
428 LKPI_80211_LSTA_TXQ_LOCK_DESTROY(lsta);
429
430 /* Remove lsta from vif; that is done by the state machine. Should assert it? */
431
432 IMPROVE("Make sure everything is cleaned up.");
433
434 /* Free lsta. */
435 lsta->ni = NULL;
436 ni->ni_drv_data = NULL;
437 free(lsta, M_LKPI80211);
438 }
439
440
441 static enum nl80211_band
lkpi_net80211_chan_to_nl80211_band(struct ieee80211_channel * c)442 lkpi_net80211_chan_to_nl80211_band(struct ieee80211_channel *c)
443 {
444
445 if (IEEE80211_IS_CHAN_2GHZ(c))
446 return (NL80211_BAND_2GHZ);
447 else if (IEEE80211_IS_CHAN_5GHZ(c))
448 return (NL80211_BAND_5GHZ);
449 #ifdef __notyet__
450 else if ()
451 return (NL80211_BAND_6GHZ);
452 else if ()
453 return (NL80211_BAND_60GHZ);
454 else if (IEEE80211_IS_CHAN_GSM(c))
455 return (NL80211_BAND_XXX);
456 #endif
457 else
458 panic("%s: unsupported band. c %p flags %#x\n",
459 __func__, c, c->ic_flags);
460 }
461
462 static uint32_t
lkpi_nl80211_band_to_net80211_band(enum nl80211_band band)463 lkpi_nl80211_band_to_net80211_band(enum nl80211_band band)
464 {
465
466 /* XXX-BZ this is just silly; net80211 is too convoluted. */
467 /* IEEE80211_CHAN_A / _G / .. doesn't really work either. */
468 switch (band) {
469 case NL80211_BAND_2GHZ:
470 return (IEEE80211_CHAN_2GHZ);
471 break;
472 case NL80211_BAND_5GHZ:
473 return (IEEE80211_CHAN_5GHZ);
474 break;
475 case NL80211_BAND_60GHZ:
476 break;
477 case NL80211_BAND_6GHZ:
478 break;
479 default:
480 panic("%s: unsupported band %u\n", __func__, band);
481 break;
482 }
483
484 IMPROVE();
485 return (0x00);
486 }
487
488 #if 0
489 static enum ieee80211_ac_numbers
490 lkpi_ac_net_to_l80211(int ac)
491 {
492
493 switch (ac) {
494 case WME_AC_VO:
495 return (IEEE80211_AC_VO);
496 case WME_AC_VI:
497 return (IEEE80211_AC_VI);
498 case WME_AC_BE:
499 return (IEEE80211_AC_BE);
500 case WME_AC_BK:
501 return (IEEE80211_AC_BK);
502 default:
503 printf("%s: invalid WME_AC_* input: ac = %d\n", __func__, ac);
504 return (IEEE80211_AC_BE);
505 }
506 }
507 #endif
508
509 static enum nl80211_iftype
lkpi_opmode_to_vif_type(enum ieee80211_opmode opmode)510 lkpi_opmode_to_vif_type(enum ieee80211_opmode opmode)
511 {
512
513 switch (opmode) {
514 case IEEE80211_M_IBSS:
515 return (NL80211_IFTYPE_ADHOC);
516 break;
517 case IEEE80211_M_STA:
518 return (NL80211_IFTYPE_STATION);
519 break;
520 case IEEE80211_M_WDS:
521 return (NL80211_IFTYPE_WDS);
522 break;
523 case IEEE80211_M_HOSTAP:
524 return (NL80211_IFTYPE_AP);
525 break;
526 case IEEE80211_M_MONITOR:
527 return (NL80211_IFTYPE_MONITOR);
528 break;
529 case IEEE80211_M_MBSS:
530 return (NL80211_IFTYPE_MESH_POINT);
531 break;
532 case IEEE80211_M_AHDEMO:
533 /* FALLTHROUGH */
534 default:
535 printf("ERROR: %s: unsupported opmode %d\n", __func__, opmode);
536 /* FALLTHROUGH */
537 }
538 return (NL80211_IFTYPE_UNSPECIFIED);
539 }
540
541 #ifdef LKPI_80211_HW_CRYPTO
542 static uint32_t
lkpi_l80211_to_net80211_cyphers(uint32_t wlan_cipher_suite)543 lkpi_l80211_to_net80211_cyphers(uint32_t wlan_cipher_suite)
544 {
545
546 switch (wlan_cipher_suite) {
547 case WLAN_CIPHER_SUITE_WEP40:
548 return (IEEE80211_CRYPTO_WEP);
549 case WLAN_CIPHER_SUITE_TKIP:
550 return (IEEE80211_CRYPTO_TKIP);
551 case WLAN_CIPHER_SUITE_CCMP:
552 return (IEEE80211_CRYPTO_AES_CCM);
553 case WLAN_CIPHER_SUITE_WEP104:
554 return (IEEE80211_CRYPTO_WEP);
555 case WLAN_CIPHER_SUITE_AES_CMAC:
556 case WLAN_CIPHER_SUITE_GCMP:
557 case WLAN_CIPHER_SUITE_GCMP_256:
558 case WLAN_CIPHER_SUITE_CCMP_256:
559 case WLAN_CIPHER_SUITE_BIP_GMAC_128:
560 case WLAN_CIPHER_SUITE_BIP_GMAC_256:
561 case WLAN_CIPHER_SUITE_BIP_CMAC_256:
562 printf("%s: unsupported WLAN Cipher Suite %#08x | %u\n", __func__,
563 wlan_cipher_suite >> 8, wlan_cipher_suite & 0xff);
564 break;
565 default:
566 printf("%s: unknown WLAN Cipher Suite %#08x | %u\n", __func__,
567 wlan_cipher_suite >> 8, wlan_cipher_suite & 0xff);
568 }
569
570 return (0);
571 }
572
573 static uint32_t
lkpi_net80211_to_l80211_cipher_suite(uint32_t cipher,uint8_t keylen)574 lkpi_net80211_to_l80211_cipher_suite(uint32_t cipher, uint8_t keylen)
575 {
576
577 switch (cipher) {
578 case IEEE80211_CIPHER_TKIP:
579 return (WLAN_CIPHER_SUITE_TKIP);
580 case IEEE80211_CIPHER_AES_CCM:
581 return (WLAN_CIPHER_SUITE_CCMP);
582 case IEEE80211_CIPHER_WEP:
583 if (keylen < 8)
584 return (WLAN_CIPHER_SUITE_WEP40);
585 else
586 return (WLAN_CIPHER_SUITE_WEP104);
587 break;
588 case IEEE80211_CIPHER_AES_OCB:
589 case IEEE80211_CIPHER_TKIPMIC:
590 case IEEE80211_CIPHER_CKIP:
591 case IEEE80211_CIPHER_NONE:
592 printf("%s: unsupported cipher %#010x\n", __func__, cipher);
593 break;
594 default:
595 printf("%s: unknown cipher %#010x\n", __func__, cipher);
596 };
597 return (0);
598 }
599 #endif
600
601 #ifdef __notyet__
602 static enum ieee80211_sta_state
lkpi_net80211_state_to_sta_state(enum ieee80211_state state)603 lkpi_net80211_state_to_sta_state(enum ieee80211_state state)
604 {
605
606 /*
607 * XXX-BZ The net80211 states are "try to ..", the lkpi8011 states are
608 * "done". Also ASSOC/AUTHORIZED are both "RUN" then?
609 */
610 switch (state) {
611 case IEEE80211_S_INIT:
612 return (IEEE80211_STA_NOTEXIST);
613 case IEEE80211_S_SCAN:
614 return (IEEE80211_STA_NONE);
615 case IEEE80211_S_AUTH:
616 return (IEEE80211_STA_AUTH);
617 case IEEE80211_S_ASSOC:
618 return (IEEE80211_STA_ASSOC);
619 case IEEE80211_S_RUN:
620 return (IEEE80211_STA_AUTHORIZED);
621 case IEEE80211_S_CAC:
622 case IEEE80211_S_CSA:
623 case IEEE80211_S_SLEEP:
624 default:
625 UNIMPLEMENTED;
626 };
627
628 return (IEEE80211_STA_NOTEXIST);
629 }
630 #endif
631
632 static struct linuxkpi_ieee80211_channel *
lkpi_find_lkpi80211_chan(struct lkpi_hw * lhw,struct ieee80211_channel * c)633 lkpi_find_lkpi80211_chan(struct lkpi_hw *lhw,
634 struct ieee80211_channel *c)
635 {
636 struct ieee80211_hw *hw;
637 struct linuxkpi_ieee80211_channel *channels;
638 enum nl80211_band band;
639 int i, nchans;
640
641 hw = LHW_TO_HW(lhw);
642 band = lkpi_net80211_chan_to_nl80211_band(c);
643 if (hw->wiphy->bands[band] == NULL)
644 return (NULL);
645
646 nchans = hw->wiphy->bands[band]->n_channels;
647 if (nchans <= 0)
648 return (NULL);
649
650 channels = hw->wiphy->bands[band]->channels;
651 for (i = 0; i < nchans; i++) {
652 if (channels[i].hw_value == c->ic_ieee)
653 return (&channels[i]);
654 }
655
656 return (NULL);
657 }
658
659 #if 0
660 static struct linuxkpi_ieee80211_channel *
661 lkpi_get_lkpi80211_chan(struct ieee80211com *ic, struct ieee80211_node *ni)
662 {
663 struct linuxkpi_ieee80211_channel *chan;
664 struct ieee80211_channel *c;
665 struct lkpi_hw *lhw;
666
667 chan = NULL;
668 if (ni != NULL && ni->ni_chan != IEEE80211_CHAN_ANYC)
669 c = ni->ni_chan;
670 else if (ic->ic_bsschan != IEEE80211_CHAN_ANYC)
671 c = ic->ic_bsschan;
672 else if (ic->ic_curchan != IEEE80211_CHAN_ANYC)
673 c = ic->ic_curchan;
674 else
675 c = NULL;
676
677 if (c != NULL && c != IEEE80211_CHAN_ANYC) {
678 lhw = ic->ic_softc;
679 chan = lkpi_find_lkpi80211_chan(lhw, c);
680 }
681
682 return (chan);
683 }
684 #endif
685
686 struct linuxkpi_ieee80211_channel *
linuxkpi_ieee80211_get_channel(struct wiphy * wiphy,uint32_t freq)687 linuxkpi_ieee80211_get_channel(struct wiphy *wiphy, uint32_t freq)
688 {
689 enum nl80211_band band;
690
691 for (band = 0; band < NUM_NL80211_BANDS; band++) {
692 struct ieee80211_supported_band *supband;
693 struct linuxkpi_ieee80211_channel *channels;
694 int i;
695
696 supband = wiphy->bands[band];
697 if (supband == NULL || supband->n_channels == 0)
698 continue;
699
700 channels = supband->channels;
701 for (i = 0; i < supband->n_channels; i++) {
702 if (channels[i].center_freq == freq)
703 return (&channels[i]);
704 }
705 }
706
707 return (NULL);
708 }
709
710 #ifdef LKPI_80211_HW_CRYPTO
711 static int
_lkpi_iv_key_set_delete(struct ieee80211vap * vap,const struct ieee80211_key * k,enum set_key_cmd cmd)712 _lkpi_iv_key_set_delete(struct ieee80211vap *vap, const struct ieee80211_key *k,
713 enum set_key_cmd cmd)
714 {
715 struct ieee80211com *ic;
716 struct lkpi_hw *lhw;
717 struct ieee80211_hw *hw;
718 struct lkpi_vif *lvif;
719 struct ieee80211_vif *vif;
720 struct ieee80211_sta *sta;
721 struct ieee80211_node *ni;
722 struct ieee80211_key_conf *kc;
723 int error;
724
725 /* XXX TODO Check (k->wk_flags & IEEE80211_KEY_SWENCRYPT) and don't upload to driver/hw? */
726
727 ic = vap->iv_ic;
728 lhw = ic->ic_softc;
729 hw = LHW_TO_HW(lhw);
730 lvif = VAP_TO_LVIF(vap);
731 vif = LVIF_TO_VIF(lvif);
732
733 memset(&kc, 0, sizeof(kc));
734 kc = malloc(sizeof(*kc) + k->wk_keylen, M_LKPI80211, M_WAITOK | M_ZERO);
735 kc->cipher = lkpi_net80211_to_l80211_cipher_suite(
736 k->wk_cipher->ic_cipher, k->wk_keylen);
737 kc->keyidx = k->wk_keyix;
738 #if 0
739 kc->hw_key_idx = /* set by hw and needs to be passed for TX */;
740 #endif
741 atomic64_set(&kc->tx_pn, k->wk_keytsc);
742 kc->keylen = k->wk_keylen;
743 memcpy(kc->key, k->wk_key, k->wk_keylen);
744
745 switch (kc->cipher) {
746 case WLAN_CIPHER_SUITE_CCMP:
747 kc->iv_len = k->wk_cipher->ic_header;
748 kc->icv_len = k->wk_cipher->ic_trailer;
749 break;
750 case WLAN_CIPHER_SUITE_TKIP:
751 default:
752 IMPROVE();
753 return (0);
754 };
755
756 ni = vap->iv_bss;
757 sta = ieee80211_find_sta(vif, ni->ni_bssid);
758 if (sta != NULL) {
759 struct lkpi_sta *lsta;
760
761 lsta = STA_TO_LSTA(sta);
762 lsta->kc = kc;
763 }
764
765 error = lkpi_80211_mo_set_key(hw, cmd, vif, sta, kc);
766 if (error != 0) {
767 /* XXX-BZ leaking kc currently */
768 ic_printf(ic, "%s: set_key failed: %d\n", __func__, error);
769 return (0);
770 } else {
771 ic_printf(ic, "%s: set_key succeeded: keyidx %u hw_key_idx %u "
772 "flags %#10x\n", __func__,
773 kc->keyidx, kc->hw_key_idx, kc->flags);
774 return (1);
775 }
776 }
777
778 static int
lkpi_iv_key_delete(struct ieee80211vap * vap,const struct ieee80211_key * k)779 lkpi_iv_key_delete(struct ieee80211vap *vap, const struct ieee80211_key *k)
780 {
781
782 /* XXX-BZ one day we should replace this iterating over VIFs, or node list? */
783 return (_lkpi_iv_key_set_delete(vap, k, DISABLE_KEY));
784 }
785 static int
lkpi_iv_key_set(struct ieee80211vap * vap,const struct ieee80211_key * k)786 lkpi_iv_key_set(struct ieee80211vap *vap, const struct ieee80211_key *k)
787 {
788
789 return (_lkpi_iv_key_set_delete(vap, k, SET_KEY));
790 }
791 #endif
792
793 static u_int
lkpi_ic_update_mcast_copy(void * arg,struct sockaddr_dl * sdl,u_int cnt)794 lkpi_ic_update_mcast_copy(void *arg, struct sockaddr_dl *sdl, u_int cnt)
795 {
796 struct netdev_hw_addr_list *mc_list;
797 struct netdev_hw_addr *addr;
798
799 KASSERT(arg != NULL && sdl != NULL, ("%s: arg %p sdl %p cnt %u\n",
800 __func__, arg, sdl, cnt));
801
802 mc_list = arg;
803 /* If it is on the list already skip it. */
804 netdev_hw_addr_list_for_each(addr, mc_list) {
805 if (!memcmp(addr->addr, LLADDR(sdl), sdl->sdl_alen))
806 return (0);
807 }
808
809 addr = malloc(sizeof(*addr), M_LKPI80211, M_NOWAIT | M_ZERO);
810 if (addr == NULL)
811 return (0);
812
813 INIT_LIST_HEAD(&addr->addr_list);
814 memcpy(addr->addr, LLADDR(sdl), sdl->sdl_alen);
815 /* XXX this should be a netdev function? */
816 list_add(&addr->addr_list, &mc_list->addr_list);
817 mc_list->count++;
818
819 #ifdef LINUXKPI_DEBUG_80211
820 if (linuxkpi_debug_80211 & D80211_TRACE)
821 printf("%s:%d: mc_list count %d: added %6D\n",
822 __func__, __LINE__, mc_list->count, addr->addr, ":");
823 #endif
824
825 return (1);
826 }
827
828 static void
lkpi_update_mcast_filter(struct ieee80211com * ic,bool force)829 lkpi_update_mcast_filter(struct ieee80211com *ic, bool force)
830 {
831 struct lkpi_hw *lhw;
832 struct ieee80211_hw *hw;
833 struct netdev_hw_addr_list mc_list;
834 struct list_head *le, *next;
835 struct netdev_hw_addr *addr;
836 struct ieee80211vap *vap;
837 u64 mc;
838 unsigned int changed_flags, total_flags;
839
840 lhw = ic->ic_softc;
841
842 if (lhw->ops->prepare_multicast == NULL ||
843 lhw->ops->configure_filter == NULL)
844 return;
845
846 if (!lhw->update_mc && !force)
847 return;
848
849 changed_flags = total_flags = 0;
850 mc_list.count = 0;
851 INIT_LIST_HEAD(&mc_list.addr_list);
852 if (ic->ic_allmulti == 0) {
853 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
854 if_foreach_llmaddr(vap->iv_ifp,
855 lkpi_ic_update_mcast_copy, &mc_list);
856 } else {
857 changed_flags |= FIF_ALLMULTI;
858 }
859
860 hw = LHW_TO_HW(lhw);
861 mc = lkpi_80211_mo_prepare_multicast(hw, &mc_list);
862 /*
863 * XXX-BZ make sure to get this sorted what is a change,
864 * what gets all set; what was already set?
865 */
866 total_flags = changed_flags;
867 lkpi_80211_mo_configure_filter(hw, changed_flags, &total_flags, mc);
868
869 #ifdef LINUXKPI_DEBUG_80211
870 if (linuxkpi_debug_80211 & D80211_TRACE)
871 printf("%s: changed_flags %#06x count %d total_flags %#010x\n",
872 __func__, changed_flags, mc_list.count, total_flags);
873 #endif
874
875 if (mc_list.count != 0) {
876 list_for_each_safe(le, next, &mc_list.addr_list) {
877 addr = list_entry(le, struct netdev_hw_addr, addr_list);
878 free(addr, M_LKPI80211);
879 mc_list.count--;
880 }
881 }
882 KASSERT(mc_list.count == 0, ("%s: mc_list %p count %d != 0\n",
883 __func__, &mc_list, mc_list.count));
884 }
885
886 static enum ieee80211_bss_changed
lkpi_update_dtim_tsf(struct ieee80211_vif * vif,struct ieee80211_node * ni,struct ieee80211vap * vap,const char * _f,int _l)887 lkpi_update_dtim_tsf(struct ieee80211_vif *vif, struct ieee80211_node *ni,
888 struct ieee80211vap *vap, const char *_f, int _l)
889 {
890 enum ieee80211_bss_changed bss_changed;
891
892 bss_changed = 0;
893
894 #ifdef LINUXKPI_DEBUG_80211
895 if (linuxkpi_debug_80211 & D80211_TRACE)
896 printf("%s:%d [%s:%d] assoc %d aid %d beacon_int %u "
897 "dtim_period %u sync_dtim_count %u sync_tsf %ju "
898 "sync_device_ts %u bss_changed %#08x\n",
899 __func__, __LINE__, _f, _l,
900 vif->cfg.assoc, vif->cfg.aid,
901 vif->bss_conf.beacon_int, vif->bss_conf.dtim_period,
902 vif->bss_conf.sync_dtim_count,
903 (uintmax_t)vif->bss_conf.sync_tsf,
904 vif->bss_conf.sync_device_ts,
905 bss_changed);
906 #endif
907
908 if (vif->bss_conf.beacon_int != ni->ni_intval) {
909 vif->bss_conf.beacon_int = ni->ni_intval;
910 /* iwlwifi FW bug workaround; iwl_mvm_mac_sta_state. */
911 if (vif->bss_conf.beacon_int < 16)
912 vif->bss_conf.beacon_int = 16;
913 bss_changed |= BSS_CHANGED_BEACON_INT;
914 }
915 if (vif->bss_conf.dtim_period != vap->iv_dtim_period &&
916 vap->iv_dtim_period > 0) {
917 vif->bss_conf.dtim_period = vap->iv_dtim_period;
918 bss_changed |= BSS_CHANGED_BEACON_INFO;
919 }
920
921 vif->bss_conf.sync_dtim_count = vap->iv_dtim_count;
922 vif->bss_conf.sync_tsf = le64toh(ni->ni_tstamp.tsf);
923 /* vif->bss_conf.sync_device_ts = set in linuxkpi_ieee80211_rx. */
924
925 #ifdef LINUXKPI_DEBUG_80211
926 if (linuxkpi_debug_80211 & D80211_TRACE)
927 printf("%s:%d [%s:%d] assoc %d aid %d beacon_int %u "
928 "dtim_period %u sync_dtim_count %u sync_tsf %ju "
929 "sync_device_ts %u bss_changed %#08x\n",
930 __func__, __LINE__, _f, _l,
931 vif->cfg.assoc, vif->cfg.aid,
932 vif->bss_conf.beacon_int, vif->bss_conf.dtim_period,
933 vif->bss_conf.sync_dtim_count,
934 (uintmax_t)vif->bss_conf.sync_tsf,
935 vif->bss_conf.sync_device_ts,
936 bss_changed);
937 #endif
938
939 return (bss_changed);
940 }
941
942 static void
lkpi_stop_hw_scan(struct lkpi_hw * lhw,struct ieee80211_vif * vif)943 lkpi_stop_hw_scan(struct lkpi_hw *lhw, struct ieee80211_vif *vif)
944 {
945 struct ieee80211_hw *hw;
946 int error;
947 bool cancel;
948
949 LKPI_80211_LHW_SCAN_LOCK(lhw);
950 cancel = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0;
951 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
952 if (!cancel)
953 return;
954
955 hw = LHW_TO_HW(lhw);
956
957 IEEE80211_UNLOCK(lhw->ic);
958 LKPI_80211_LHW_LOCK(lhw);
959 /* Need to cancel the scan. */
960 lkpi_80211_mo_cancel_hw_scan(hw, vif);
961 LKPI_80211_LHW_UNLOCK(lhw);
962
963 /* Need to make sure we see ieee80211_scan_completed. */
964 LKPI_80211_LHW_SCAN_LOCK(lhw);
965 if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0)
966 error = msleep(lhw, &lhw->scan_mtx, 0, "lhwscanstop", hz/2);
967 cancel = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0;
968 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
969
970 IEEE80211_LOCK(lhw->ic);
971
972 if (cancel)
973 ic_printf(lhw->ic, "%s: failed to cancel scan: %d (%p, %p)\n",
974 __func__, error, lhw, vif);
975 }
976
977 static void
lkpi_hw_conf_idle(struct ieee80211_hw * hw,bool new)978 lkpi_hw_conf_idle(struct ieee80211_hw *hw, bool new)
979 {
980 struct lkpi_hw *lhw;
981 int error;
982 bool old;
983
984 old = hw->conf.flags & IEEE80211_CONF_IDLE;
985 if (old == new)
986 return;
987
988 hw->conf.flags ^= IEEE80211_CONF_IDLE;
989 error = lkpi_80211_mo_config(hw, IEEE80211_CONF_CHANGE_IDLE);
990 if (error != 0 && error != EOPNOTSUPP) {
991 lhw = HW_TO_LHW(hw);
992 ic_printf(lhw->ic, "ERROR: %s: config %#0x returned %d\n",
993 __func__, IEEE80211_CONF_CHANGE_IDLE, error);
994 }
995 }
996
997 static enum ieee80211_bss_changed
lkpi_disassoc(struct ieee80211_sta * sta,struct ieee80211_vif * vif,struct lkpi_hw * lhw)998 lkpi_disassoc(struct ieee80211_sta *sta, struct ieee80211_vif *vif,
999 struct lkpi_hw *lhw)
1000 {
1001 enum ieee80211_bss_changed changed;
1002
1003 changed = 0;
1004 sta->aid = 0;
1005 if (vif->cfg.assoc) {
1006
1007 lhw->update_mc = true;
1008 lkpi_update_mcast_filter(lhw->ic, true);
1009
1010 vif->cfg.assoc = false;
1011 vif->cfg.aid = 0;
1012 changed |= BSS_CHANGED_ASSOC;
1013 IMPROVE();
1014
1015 /*
1016 * Executing the bss_info_changed(BSS_CHANGED_ASSOC) with
1017 * assoc = false right away here will remove the sta from
1018 * firmware for iwlwifi.
1019 * We no longer do this but only return the BSS_CHNAGED value.
1020 * The caller is responsible for removing the sta gong to
1021 * IEEE80211_STA_NOTEXIST and then executing the
1022 * bss_info_changed() update.
1023 * See lkpi_sta_run_to_init() for more detailed comment.
1024 */
1025 }
1026
1027 return (changed);
1028 }
1029
1030 static void
lkpi_wake_tx_queues(struct ieee80211_hw * hw,struct ieee80211_sta * sta,bool dequeue_seen,bool no_emptyq)1031 lkpi_wake_tx_queues(struct ieee80211_hw *hw, struct ieee80211_sta *sta,
1032 bool dequeue_seen, bool no_emptyq)
1033 {
1034 struct lkpi_txq *ltxq;
1035 int tid;
1036 bool ltxq_empty;
1037
1038 /* Wake up all queues to know they are allocated in the driver. */
1039 for (tid = 0; tid < nitems(sta->txq); tid++) {
1040
1041 if (tid == IEEE80211_NUM_TIDS) {
1042 IMPROVE("station specific?");
1043 if (!ieee80211_hw_check(hw, STA_MMPDU_TXQ))
1044 continue;
1045 } else if (tid >= hw->queues)
1046 continue;
1047
1048 if (sta->txq[tid] == NULL)
1049 continue;
1050
1051 ltxq = TXQ_TO_LTXQ(sta->txq[tid]);
1052 if (dequeue_seen && !ltxq->seen_dequeue)
1053 continue;
1054
1055 LKPI_80211_LTXQ_LOCK(ltxq);
1056 ltxq_empty = skb_queue_empty(<xq->skbq);
1057 LKPI_80211_LTXQ_UNLOCK(ltxq);
1058 if (no_emptyq && ltxq_empty)
1059 continue;
1060
1061 lkpi_80211_mo_wake_tx_queue(hw, sta->txq[tid]);
1062 }
1063 }
1064
1065 /*
1066 * On the way down from RUN -> ASSOC -> AUTH we may send a DISASSOC or DEAUTH
1067 * packet. The problem is that the state machine functions tend to hold the
1068 * LHW lock which will prevent lkpi_80211_txq_tx_one() from sending the packet.
1069 * We call this after dropping the ic lock and before acquiring the LHW lock.
1070 * we make sure no further packets are queued and if they are queued the task
1071 * will finish or be cancelled. At the end if a packet is left we manually
1072 * send it. scan_to_auth() would re-enable sending if the lsta would be
1073 * re-used.
1074 */
1075 static void
lkpi_80211_flush_tx(struct lkpi_hw * lhw,struct lkpi_sta * lsta)1076 lkpi_80211_flush_tx(struct lkpi_hw *lhw, struct lkpi_sta *lsta)
1077 {
1078 struct mbufq mq;
1079 struct mbuf *m;
1080 int len;
1081
1082 LKPI_80211_LHW_UNLOCK_ASSERT(lhw);
1083
1084 /* Do not accept any new packets until scan_to_auth or lsta_free(). */
1085 LKPI_80211_LSTA_TXQ_LOCK(lsta);
1086 lsta->txq_ready = false;
1087 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
1088
1089 while (taskqueue_cancel(taskqueue_thread, &lsta->txq_task, NULL) != 0)
1090 taskqueue_drain(taskqueue_thread, &lsta->txq_task);
1091
1092 LKPI_80211_LSTA_TXQ_LOCK(lsta);
1093 len = mbufq_len(&lsta->txq);
1094 if (len <= 0) {
1095 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
1096 return;
1097 }
1098
1099 mbufq_init(&mq, IFQ_MAXLEN);
1100 mbufq_concat(&mq, &lsta->txq);
1101 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
1102
1103 m = mbufq_dequeue(&mq);
1104 while (m != NULL) {
1105 lkpi_80211_txq_tx_one(lsta, m);
1106 m = mbufq_dequeue(&mq);
1107 }
1108 }
1109
1110 /* -------------------------------------------------------------------------- */
1111
1112 static int
lkpi_sta_state_do_nada(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1113 lkpi_sta_state_do_nada(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1114 {
1115
1116 return (0);
1117 }
1118
1119 /* lkpi_iv_newstate() handles the stop scan case generally. */
1120 #define lkpi_sta_scan_to_init(_v, _n, _a) lkpi_sta_state_do_nada(_v, _n, _a)
1121
1122 static int
lkpi_sta_scan_to_auth(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1123 lkpi_sta_scan_to_auth(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1124 {
1125 struct linuxkpi_ieee80211_channel *chan;
1126 struct lkpi_chanctx *lchanctx;
1127 struct ieee80211_chanctx_conf *chanctx_conf;
1128 struct lkpi_hw *lhw;
1129 struct ieee80211_hw *hw;
1130 struct lkpi_vif *lvif;
1131 struct ieee80211_vif *vif;
1132 struct ieee80211_node *ni;
1133 struct lkpi_sta *lsta;
1134 enum ieee80211_bss_changed bss_changed;
1135 struct ieee80211_prep_tx_info prep_tx_info;
1136 uint32_t changed;
1137 int error;
1138
1139 /*
1140 * In here we use vap->iv_bss until lvif->lvif_bss is set.
1141 * For all later (STATE >= AUTH) functions we need to use the lvif
1142 * cache which will be tracked even through (*iv_update_bss)().
1143 */
1144
1145 if (vap->iv_bss == NULL) {
1146 ic_printf(vap->iv_ic, "%s: no iv_bss for vap %p\n", __func__, vap);
1147 return (EINVAL);
1148 }
1149 /*
1150 * Keep the ni alive locally. In theory (and practice) iv_bss can change
1151 * once we unlock here. This is due to net80211 allowing state changes
1152 * and new join1() despite having an active node as well as due to
1153 * the fact that the iv_bss can be swapped under the hood in (*iv_update_bss).
1154 */
1155 ni = ieee80211_ref_node(vap->iv_bss);
1156 if (ni->ni_chan == NULL || ni->ni_chan == IEEE80211_CHAN_ANYC) {
1157 ic_printf(vap->iv_ic, "%s: no channel set for iv_bss ni %p "
1158 "on vap %p\n", __func__, ni, vap);
1159 ieee80211_free_node(ni); /* Error handling for the local ni. */
1160 return (EINVAL);
1161 }
1162
1163 lhw = vap->iv_ic->ic_softc;
1164 chan = lkpi_find_lkpi80211_chan(lhw, ni->ni_chan);
1165 if (chan == NULL) {
1166 ic_printf(vap->iv_ic, "%s: failed to get LKPI channel from "
1167 "iv_bss ni %p on vap %p\n", __func__, ni, vap);
1168 ieee80211_free_node(ni); /* Error handling for the local ni. */
1169 return (ESRCH);
1170 }
1171
1172 hw = LHW_TO_HW(lhw);
1173 lvif = VAP_TO_LVIF(vap);
1174 vif = LVIF_TO_VIF(lvif);
1175
1176 LKPI_80211_LVIF_LOCK(lvif);
1177 /* XXX-BZ KASSERT later? */
1178 if (lvif->lvif_bss_synched || lvif->lvif_bss != NULL) {
1179 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
1180 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
1181 lvif, vap, vap->iv_bss, lvif->lvif_bss,
1182 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
1183 lvif->lvif_bss_synched);
1184 return (EBUSY);
1185 }
1186 LKPI_80211_LVIF_UNLOCK(lvif);
1187
1188 IEEE80211_UNLOCK(vap->iv_ic);
1189 LKPI_80211_LHW_LOCK(lhw);
1190
1191 /* Add chanctx (or if exists, change it). */
1192 if (vif->chanctx_conf != NULL) {
1193 chanctx_conf = vif->chanctx_conf;
1194 lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf);
1195 IMPROVE("diff changes for changed, working on live copy, rcu");
1196 } else {
1197 /* Keep separate alloc as in Linux this is rcu managed? */
1198 lchanctx = malloc(sizeof(*lchanctx) + hw->chanctx_data_size,
1199 M_LKPI80211, M_WAITOK | M_ZERO);
1200 chanctx_conf = &lchanctx->chanctx_conf;
1201 }
1202
1203 chanctx_conf->rx_chains_dynamic = 1;
1204 chanctx_conf->rx_chains_static = 1;
1205 chanctx_conf->radar_enabled =
1206 (chan->flags & IEEE80211_CHAN_RADAR) ? true : false;
1207 chanctx_conf->def.chan = chan;
1208 chanctx_conf->def.width = NL80211_CHAN_WIDTH_20_NOHT;
1209 chanctx_conf->def.center_freq1 = chan->center_freq;
1210 chanctx_conf->def.center_freq2 = 0;
1211 IMPROVE("Check vht_cap from band not just chan?");
1212 KASSERT(ni->ni_chan != NULL && ni->ni_chan != IEEE80211_CHAN_ANYC,
1213 ("%s:%d: ni %p ni_chan %p\n", __func__, __LINE__, ni, ni->ni_chan));
1214 #ifdef LKPI_80211_HT
1215 if (IEEE80211_IS_CHAN_HT(ni->ni_chan)) {
1216 if (IEEE80211_IS_CHAN_HT40(ni->ni_chan)) {
1217 chanctx_conf->def.width = NL80211_CHAN_WIDTH_40;
1218 } else
1219 chanctx_conf->def.width = NL80211_CHAN_WIDTH_20;
1220 }
1221 #endif
1222 #ifdef LKPI_80211_VHT
1223 if (IEEE80211_IS_CHAN_VHT(ni->ni_chan)) {
1224 #ifdef __notyet__
1225 if (IEEE80211_IS_CHAN_VHT80P80(ni->ni_chan)) {
1226 chanctx_conf->def.width = NL80211_CHAN_WIDTH_80P80;
1227 chanctx_conf->def.center_freq2 = 0; /* XXX */
1228 } else
1229 #endif
1230 if (IEEE80211_IS_CHAN_VHT160(ni->ni_chan))
1231 chanctx_conf->def.width = NL80211_CHAN_WIDTH_160;
1232 else if (IEEE80211_IS_CHAN_VHT80(ni->ni_chan))
1233 chanctx_conf->def.width = NL80211_CHAN_WIDTH_80;
1234 }
1235 #endif
1236 /* Responder ... */
1237 chanctx_conf->min_def.chan = chan;
1238 chanctx_conf->min_def.width = NL80211_CHAN_WIDTH_20_NOHT;
1239 chanctx_conf->min_def.center_freq1 = chan->center_freq;
1240 chanctx_conf->min_def.center_freq2 = 0;
1241 IMPROVE("currently 20_NOHT min_def only");
1242
1243 /* Set bss info (bss_info_changed). */
1244 bss_changed = 0;
1245 vif->bss_conf.bssid = ni->ni_bssid;
1246 bss_changed |= BSS_CHANGED_BSSID;
1247 vif->bss_conf.txpower = ni->ni_txpower;
1248 bss_changed |= BSS_CHANGED_TXPOWER;
1249 vif->cfg.idle = false;
1250 bss_changed |= BSS_CHANGED_IDLE;
1251
1252 /* vif->bss_conf.basic_rates ? Where exactly? */
1253
1254 /* Should almost assert it is this. */
1255 vif->cfg.assoc = false;
1256 vif->cfg.aid = 0;
1257
1258 bss_changed |= lkpi_update_dtim_tsf(vif, ni, vap, __func__, __LINE__);
1259
1260 error = 0;
1261 if (vif->chanctx_conf != NULL) {
1262 changed = IEEE80211_CHANCTX_CHANGE_MIN_WIDTH;
1263 changed |= IEEE80211_CHANCTX_CHANGE_RADAR;
1264 changed |= IEEE80211_CHANCTX_CHANGE_RX_CHAINS;
1265 changed |= IEEE80211_CHANCTX_CHANGE_WIDTH;
1266 lkpi_80211_mo_change_chanctx(hw, chanctx_conf, changed);
1267 } else {
1268 error = lkpi_80211_mo_add_chanctx(hw, chanctx_conf);
1269 if (error == 0 || error == EOPNOTSUPP) {
1270 vif->bss_conf.chandef.chan = chanctx_conf->def.chan;
1271 vif->bss_conf.chandef.width = chanctx_conf->def.width;
1272 vif->bss_conf.chandef.center_freq1 =
1273 chanctx_conf->def.center_freq1;
1274 #ifdef LKPI_80211_HT
1275 if (vif->bss_conf.chandef.width == NL80211_CHAN_WIDTH_40) {
1276 /* Note: it is 10 not 20. */
1277 if (IEEE80211_IS_CHAN_HT40U(ni->ni_chan))
1278 vif->bss_conf.chandef.center_freq1 += 10;
1279 else if (IEEE80211_IS_CHAN_HT40D(ni->ni_chan))
1280 vif->bss_conf.chandef.center_freq1 -= 10;
1281 }
1282 #endif
1283 vif->bss_conf.chandef.center_freq2 =
1284 chanctx_conf->def.center_freq2;
1285 } else {
1286 ic_printf(vap->iv_ic, "%s:%d: mo_add_chanctx "
1287 "failed: %d\n", __func__, __LINE__, error);
1288 goto out;
1289 }
1290
1291 vif->bss_conf.chanctx_conf = chanctx_conf;
1292
1293 /* Assign vif chanctx. */
1294 if (error == 0)
1295 error = lkpi_80211_mo_assign_vif_chanctx(hw, vif,
1296 &vif->bss_conf, chanctx_conf);
1297 if (error == EOPNOTSUPP)
1298 error = 0;
1299 if (error != 0) {
1300 ic_printf(vap->iv_ic, "%s:%d: mo_assign_vif_chanctx "
1301 "failed: %d\n", __func__, __LINE__, error);
1302 lkpi_80211_mo_remove_chanctx(hw, chanctx_conf);
1303 lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf);
1304 free(lchanctx, M_LKPI80211);
1305 goto out;
1306 }
1307 }
1308 IMPROVE("update radiotap chan fields too");
1309
1310 /* RATES */
1311 IMPROVE("bss info: not all needs to come now and rates are missing");
1312 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
1313
1314 /*
1315 * Given ni and lsta are 1:1 from alloc to free we can assert that
1316 * ni always has lsta data attach despite net80211 node swapping
1317 * under the hoods.
1318 */
1319 KASSERT(ni->ni_drv_data != NULL, ("%s: ni %p ni_drv_data %p\n",
1320 __func__, ni, ni->ni_drv_data));
1321 lsta = ni->ni_drv_data;
1322
1323 /*
1324 * Make sure in case the sta did not change and we re-add it,
1325 * that we can tx again.
1326 */
1327 LKPI_80211_LSTA_TXQ_LOCK(lsta);
1328 lsta->txq_ready = true;
1329 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
1330
1331 LKPI_80211_LVIF_LOCK(lvif);
1332 /* Insert the [l]sta into the list of known stations. */
1333 TAILQ_INSERT_TAIL(&lvif->lsta_head, lsta, lsta_entry);
1334 LKPI_80211_LVIF_UNLOCK(lvif);
1335
1336 /* Add (or adjust) sta and change state (from NOTEXIST) to NONE. */
1337 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
1338 KASSERT(lsta->state == IEEE80211_STA_NOTEXIST, ("%s: lsta %p state not "
1339 "NOTEXIST: %#x\n", __func__, lsta, lsta->state));
1340 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NONE);
1341 if (error != 0) {
1342 IMPROVE("do we need to undo the chan ctx?");
1343 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NONE) "
1344 "failed: %d\n", __func__, __LINE__, error);
1345 goto out;
1346 }
1347 #if 0
1348 lsta->added_to_drv = true; /* mo manages. */
1349 #endif
1350
1351 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
1352
1353 #if 0
1354 /*
1355 * Wakeup all queues now that sta is there so we have as much time to
1356 * possibly prepare the queue in the driver to be ready for the 1st
1357 * packet; lkpi_80211_txq_tx_one() still has a workaround as there
1358 * is no guarantee or way to check.
1359 * XXX-BZ and by now we know that this does not work on all drivers
1360 * for all queues.
1361 */
1362 lkpi_wake_tx_queues(hw, LSTA_TO_STA(lsta), false, false);
1363 #endif
1364
1365 /* Start mgd_prepare_tx. */
1366 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
1367 prep_tx_info.duration = PREP_TX_INFO_DURATION;
1368 lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
1369 lsta->in_mgd = true;
1370
1371 /*
1372 * What is going to happen next:
1373 * - <twiddle> .. we should end up in "auth_to_assoc"
1374 * - event_callback
1375 * - update sta_state (NONE to AUTH)
1376 * - mgd_complete_tx
1377 * (ideally we'd do that on a callback for something else ...)
1378 */
1379
1380 LKPI_80211_LHW_UNLOCK(lhw);
1381 IEEE80211_LOCK(vap->iv_ic);
1382
1383 LKPI_80211_LVIF_LOCK(lvif);
1384 /* Re-check given (*iv_update_bss) could have happened while we were unlocked. */
1385 if (lvif->lvif_bss_synched || lvif->lvif_bss != NULL ||
1386 lsta->ni != vap->iv_bss)
1387 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
1388 "lvif_bss->ni %p synched %d, ni %p lsta %p\n", __func__, __LINE__,
1389 lvif, vap, vap->iv_bss, lvif->lvif_bss,
1390 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
1391 lvif->lvif_bss_synched, ni, lsta);
1392
1393 /*
1394 * Reference the "ni" for caching the lsta/ni in lvif->lvif_bss.
1395 * Given we cache lsta we use lsta->ni instead of ni here (even though
1396 * lsta->ni == ni) to be distinct from the rest of the code where we do
1397 * assume that ni == vap->iv_bss which it may or may not be.
1398 * So do NOT use iv_bss here anymore as that may have diverged from our
1399 * function local ni already while ic was unlocked and would lead to
1400 * inconsistencies. Go and see if we lost a race and do not update
1401 * lvif_bss_synched in that case.
1402 */
1403 ieee80211_ref_node(lsta->ni);
1404 lvif->lvif_bss = lsta;
1405 if (lsta->ni == vap->iv_bss) {
1406 lvif->lvif_bss_synched = true;
1407 } else {
1408 /* Set to un-synched no matter what. */
1409 lvif->lvif_bss_synched = false;
1410 /*
1411 * We do not error as someone has to take us down.
1412 * If we are followed by a 2nd, new net80211::join1() going to
1413 * AUTH lkpi_sta_a_to_a() will error, lkpi_sta_auth_to_{scan,init}()
1414 * will take the lvif->lvif_bss node down eventually.
1415 * What happens with the vap->iv_bss node will entirely be up
1416 * to net80211 as we never used the node beyond alloc()/free()
1417 * and we do not hold an extra reference for that anymore given
1418 * ni : lsta == 1:1.
1419 */
1420 }
1421 LKPI_80211_LVIF_UNLOCK(lvif);
1422 goto out_relocked;
1423
1424 out:
1425 LKPI_80211_LHW_UNLOCK(lhw);
1426 IEEE80211_LOCK(vap->iv_ic);
1427 out_relocked:
1428 /*
1429 * Release the reference that kept the ni stable locally
1430 * during the work of this function.
1431 */
1432 if (ni != NULL)
1433 ieee80211_free_node(ni);
1434 return (error);
1435 }
1436
1437 static int
lkpi_sta_auth_to_scan(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1438 lkpi_sta_auth_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1439 {
1440 struct lkpi_hw *lhw;
1441 struct ieee80211_hw *hw;
1442 struct lkpi_vif *lvif;
1443 struct ieee80211_vif *vif;
1444 struct ieee80211_node *ni;
1445 struct lkpi_sta *lsta;
1446 struct ieee80211_sta *sta;
1447 struct ieee80211_prep_tx_info prep_tx_info;
1448 int error;
1449
1450 lhw = vap->iv_ic->ic_softc;
1451 hw = LHW_TO_HW(lhw);
1452 lvif = VAP_TO_LVIF(vap);
1453 vif = LVIF_TO_VIF(lvif);
1454
1455 LKPI_80211_LVIF_LOCK(lvif);
1456 #ifdef LINUXKPI_DEBUG_80211
1457 /* XXX-BZ KASSERT later; state going down so no action. */
1458 if (lvif->lvif_bss == NULL)
1459 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
1460 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
1461 lvif, vap, vap->iv_bss, lvif->lvif_bss,
1462 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
1463 lvif->lvif_bss_synched);
1464 #endif
1465
1466 lsta = lvif->lvif_bss;
1467 LKPI_80211_LVIF_UNLOCK(lvif);
1468 KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
1469 "lvif %p vap %p\n", __func__,
1470 lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
1471 ni = lsta->ni; /* Reference held for lvif_bss. */
1472 sta = LSTA_TO_STA(lsta);
1473
1474 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
1475
1476 IEEE80211_UNLOCK(vap->iv_ic);
1477 LKPI_80211_LHW_LOCK(lhw);
1478
1479 /* flush, drop. */
1480 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true);
1481
1482 /* Wake tx queues to get packet(s) out. */
1483 lkpi_wake_tx_queues(hw, sta, false, true);
1484
1485 /* flush, no drop */
1486 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false);
1487
1488 /* End mgd_complete_tx. */
1489 if (lsta->in_mgd) {
1490 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
1491 prep_tx_info.success = false;
1492 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
1493 lsta->in_mgd = false;
1494 }
1495
1496 /* sync_rx_queues */
1497 lkpi_80211_mo_sync_rx_queues(hw);
1498
1499 /* sta_pre_rcu_remove */
1500 lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta);
1501
1502 /* Take the station down. */
1503
1504 /* Adjust sta and change state (from NONE) to NOTEXIST. */
1505 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
1506 KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not "
1507 "NONE: %#x, nstate %d arg %d\n", __func__, lsta, lsta->state, nstate, arg));
1508 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NOTEXIST);
1509 if (error != 0) {
1510 IMPROVE("do we need to undo the chan ctx?");
1511 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NOTEXIST) "
1512 "failed: %d\n", __func__, __LINE__, error);
1513 goto out;
1514 }
1515 #if 0
1516 lsta->added_to_drv = false; /* mo manages. */
1517 #endif
1518
1519 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
1520
1521 LKPI_80211_LVIF_LOCK(lvif);
1522 /* Remove ni reference for this cache of lsta. */
1523 lvif->lvif_bss = NULL;
1524 lvif->lvif_bss_synched = false;
1525 LKPI_80211_LVIF_UNLOCK(lvif);
1526 lkpi_lsta_remove(lsta, lvif);
1527 /*
1528 * The very last release the reference on the ni for the ni/lsta on
1529 * lvif->lvif_bss. Upon return from this both ni and lsta are invalid
1530 * and potentially freed.
1531 */
1532 ieee80211_free_node(ni);
1533
1534 /* conf_tx */
1535
1536 /* Take the chan ctx down. */
1537 if (vif->chanctx_conf != NULL) {
1538 struct lkpi_chanctx *lchanctx;
1539 struct ieee80211_chanctx_conf *chanctx_conf;
1540
1541 chanctx_conf = vif->chanctx_conf;
1542 /* Remove vif context. */
1543 lkpi_80211_mo_unassign_vif_chanctx(hw, vif, &vif->bss_conf, &vif->chanctx_conf);
1544 /* NB: vif->chanctx_conf is NULL now. */
1545
1546 lkpi_hw_conf_idle(hw, true);
1547
1548 /* Remove chan ctx. */
1549 lkpi_80211_mo_remove_chanctx(hw, chanctx_conf);
1550 lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf);
1551 free(lchanctx, M_LKPI80211);
1552 }
1553
1554 out:
1555 LKPI_80211_LHW_UNLOCK(lhw);
1556 IEEE80211_LOCK(vap->iv_ic);
1557 return (error);
1558 }
1559
1560 static int
lkpi_sta_auth_to_init(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1561 lkpi_sta_auth_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1562 {
1563 int error;
1564
1565 error = lkpi_sta_auth_to_scan(vap, nstate, arg);
1566 if (error == 0)
1567 error = lkpi_sta_scan_to_init(vap, nstate, arg);
1568 return (error);
1569 }
1570
1571 static int
lkpi_sta_auth_to_assoc(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1572 lkpi_sta_auth_to_assoc(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1573 {
1574 struct lkpi_hw *lhw;
1575 struct ieee80211_hw *hw;
1576 struct lkpi_vif *lvif;
1577 struct ieee80211_vif *vif;
1578 struct lkpi_sta *lsta;
1579 struct ieee80211_prep_tx_info prep_tx_info;
1580 int error;
1581
1582 lhw = vap->iv_ic->ic_softc;
1583 hw = LHW_TO_HW(lhw);
1584 lvif = VAP_TO_LVIF(vap);
1585 vif = LVIF_TO_VIF(lvif);
1586
1587 IEEE80211_UNLOCK(vap->iv_ic);
1588 LKPI_80211_LHW_LOCK(lhw);
1589
1590 LKPI_80211_LVIF_LOCK(lvif);
1591 /* XXX-BZ KASSERT later? */
1592 if (!lvif->lvif_bss_synched || lvif->lvif_bss == NULL) {
1593 #ifdef LINUXKPI_DEBUG_80211
1594 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
1595 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
1596 lvif, vap, vap->iv_bss, lvif->lvif_bss,
1597 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
1598 lvif->lvif_bss_synched);
1599 #endif
1600 error = ENOTRECOVERABLE;
1601 LKPI_80211_LVIF_UNLOCK(lvif);
1602 goto out;
1603 }
1604 lsta = lvif->lvif_bss;
1605 LKPI_80211_LVIF_UNLOCK(lvif);
1606
1607 KASSERT(lsta != NULL, ("%s: lsta %p\n", __func__, lsta));
1608
1609 /* Finish auth. */
1610 IMPROVE("event callback");
1611
1612 /* Update sta_state (NONE to AUTH). */
1613 KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not "
1614 "NONE: %#x\n", __func__, lsta, lsta->state));
1615 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTH);
1616 if (error != 0) {
1617 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTH) "
1618 "failed: %d\n", __func__, __LINE__, error);
1619 goto out;
1620 }
1621
1622 /* End mgd_complete_tx. */
1623 if (lsta->in_mgd) {
1624 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
1625 prep_tx_info.success = true;
1626 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
1627 lsta->in_mgd = false;
1628 }
1629
1630 /* Now start assoc. */
1631
1632 /* Start mgd_prepare_tx. */
1633 if (!lsta->in_mgd) {
1634 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
1635 prep_tx_info.duration = PREP_TX_INFO_DURATION;
1636 lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
1637 lsta->in_mgd = true;
1638 }
1639
1640 /* Wake tx queue to get packet out. */
1641 lkpi_wake_tx_queues(hw, LSTA_TO_STA(lsta), false, true);
1642
1643 /*
1644 * <twiddle> .. we end up in "assoc_to_run"
1645 * - update sta_state (AUTH to ASSOC)
1646 * - conf_tx [all]
1647 * - bss_info_changed (assoc, aid, ssid, ..)
1648 * - change_chanctx (if needed)
1649 * - event_callback
1650 * - mgd_complete_tx
1651 */
1652
1653 out:
1654 LKPI_80211_LHW_UNLOCK(lhw);
1655 IEEE80211_LOCK(vap->iv_ic);
1656 return (error);
1657 }
1658
1659 /* auth_to_auth, assoc_to_assoc. */
1660 static int
lkpi_sta_a_to_a(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1661 lkpi_sta_a_to_a(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1662 {
1663 struct lkpi_hw *lhw;
1664 struct ieee80211_hw *hw;
1665 struct lkpi_vif *lvif;
1666 struct ieee80211_vif *vif;
1667 struct lkpi_sta *lsta;
1668 struct ieee80211_prep_tx_info prep_tx_info;
1669 int error;
1670
1671 lhw = vap->iv_ic->ic_softc;
1672 hw = LHW_TO_HW(lhw);
1673 lvif = VAP_TO_LVIF(vap);
1674 vif = LVIF_TO_VIF(lvif);
1675
1676 IEEE80211_UNLOCK(vap->iv_ic);
1677 LKPI_80211_LHW_LOCK(lhw);
1678
1679 LKPI_80211_LVIF_LOCK(lvif);
1680 /* XXX-BZ KASSERT later? */
1681 if (!lvif->lvif_bss_synched || lvif->lvif_bss == NULL) {
1682 #ifdef LINUXKPI_DEBUG_80211
1683 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
1684 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
1685 lvif, vap, vap->iv_bss, lvif->lvif_bss,
1686 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
1687 lvif->lvif_bss_synched);
1688 #endif
1689 LKPI_80211_LVIF_UNLOCK(lvif);
1690 error = ENOTRECOVERABLE;
1691 goto out;
1692 }
1693 lsta = lvif->lvif_bss;
1694 LKPI_80211_LVIF_UNLOCK(lvif);
1695
1696 KASSERT(lsta != NULL, ("%s: lsta %p! lvif %p vap %p\n", __func__,
1697 lsta, lvif, vap));
1698
1699 IMPROVE("event callback?");
1700
1701 /* End mgd_complete_tx. */
1702 if (lsta->in_mgd) {
1703 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
1704 prep_tx_info.success = false;
1705 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
1706 lsta->in_mgd = false;
1707 }
1708
1709 /* Now start assoc. */
1710
1711 /* Start mgd_prepare_tx. */
1712 if (!lsta->in_mgd) {
1713 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
1714 prep_tx_info.duration = PREP_TX_INFO_DURATION;
1715 lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
1716 lsta->in_mgd = true;
1717 }
1718
1719 error = 0;
1720 out:
1721 LKPI_80211_LHW_UNLOCK(lhw);
1722 IEEE80211_LOCK(vap->iv_ic);
1723
1724 return (error);
1725 }
1726
1727 static int
_lkpi_sta_assoc_to_down(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1728 _lkpi_sta_assoc_to_down(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1729 {
1730 struct lkpi_hw *lhw;
1731 struct ieee80211_hw *hw;
1732 struct lkpi_vif *lvif;
1733 struct ieee80211_vif *vif;
1734 struct ieee80211_node *ni;
1735 struct lkpi_sta *lsta;
1736 struct ieee80211_sta *sta;
1737 struct ieee80211_prep_tx_info prep_tx_info;
1738 enum ieee80211_bss_changed bss_changed;
1739 int error;
1740
1741 lhw = vap->iv_ic->ic_softc;
1742 hw = LHW_TO_HW(lhw);
1743 lvif = VAP_TO_LVIF(vap);
1744 vif = LVIF_TO_VIF(lvif);
1745
1746 IEEE80211_UNLOCK(vap->iv_ic);
1747 LKPI_80211_LHW_LOCK(lhw);
1748
1749 LKPI_80211_LVIF_LOCK(lvif);
1750 #ifdef LINUXKPI_DEBUG_80211
1751 /* XXX-BZ KASSERT later; state going down so no action. */
1752 if (lvif->lvif_bss == NULL)
1753 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
1754 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
1755 lvif, vap, vap->iv_bss, lvif->lvif_bss,
1756 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
1757 lvif->lvif_bss_synched);
1758 #endif
1759 lsta = lvif->lvif_bss;
1760 LKPI_80211_LVIF_UNLOCK(lvif);
1761 KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
1762 "lvif %p vap %p\n", __func__,
1763 lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
1764
1765 ni = lsta->ni; /* Reference held for lvif_bss. */
1766 sta = LSTA_TO_STA(lsta);
1767
1768 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
1769
1770 /* flush, drop. */
1771 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true);
1772
1773 IMPROVE("What are the proper conditions for DEAUTH_NEED_MGD_TX_PREP?");
1774 if (ieee80211_hw_check(hw, DEAUTH_NEED_MGD_TX_PREP) &&
1775 !lsta->in_mgd) {
1776 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
1777 prep_tx_info.duration = PREP_TX_INFO_DURATION;
1778 lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
1779 lsta->in_mgd = true;
1780 }
1781
1782 LKPI_80211_LHW_UNLOCK(lhw);
1783 IEEE80211_LOCK(vap->iv_ic);
1784
1785 /* Call iv_newstate first so we get potential DEAUTH packet out. */
1786 error = lvif->iv_newstate(vap, nstate, arg);
1787 if (error != 0) {
1788 ic_printf(vap->iv_ic, "%s:%d: iv_newstate(%p, %d, %d) "
1789 "failed: %d\n", __func__, __LINE__, vap, nstate, arg, error);
1790 goto outni;
1791 }
1792
1793 IEEE80211_UNLOCK(vap->iv_ic);
1794
1795 /* Ensure the packets get out. */
1796 lkpi_80211_flush_tx(lhw, lsta);
1797
1798 LKPI_80211_LHW_LOCK(lhw);
1799
1800 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
1801
1802 /* Wake tx queues to get packet(s) out. */
1803 lkpi_wake_tx_queues(hw, sta, false, true);
1804
1805 /* flush, no drop */
1806 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false);
1807
1808 /* End mgd_complete_tx. */
1809 if (lsta->in_mgd) {
1810 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
1811 prep_tx_info.success = false;
1812 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
1813 lsta->in_mgd = false;
1814 }
1815
1816 /* sync_rx_queues */
1817 lkpi_80211_mo_sync_rx_queues(hw);
1818
1819 /* sta_pre_rcu_remove */
1820 lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta);
1821
1822 /* Take the station down. */
1823
1824 /* Update sta and change state (from AUTH) to NONE. */
1825 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
1826 KASSERT(lsta->state == IEEE80211_STA_AUTH, ("%s: lsta %p state not "
1827 "AUTH: %#x\n", __func__, lsta, lsta->state));
1828 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NONE);
1829 if (error != 0) {
1830 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NONE) "
1831 "failed: %d\n", __func__, __LINE__, error);
1832 goto out;
1833 }
1834
1835 /* See comment in lkpi_sta_run_to_init(). */
1836 bss_changed = 0;
1837 bss_changed |= lkpi_disassoc(sta, vif, lhw);
1838
1839 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
1840
1841 /* Adjust sta and change state (from NONE) to NOTEXIST. */
1842 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
1843 KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not "
1844 "NONE: %#x, nstate %d arg %d\n", __func__, lsta, lsta->state, nstate, arg));
1845 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NOTEXIST);
1846 if (error != 0) {
1847 IMPROVE("do we need to undo the chan ctx?");
1848 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NOTEXIST) "
1849 "failed: %d\n", __func__, __LINE__, error);
1850 goto out;
1851 }
1852
1853 lkpi_lsta_dump(lsta, ni, __func__, __LINE__); /* sta no longer save to use. */
1854
1855 IMPROVE("Any bss_info changes to announce?");
1856 vif->bss_conf.qos = 0;
1857 bss_changed |= BSS_CHANGED_QOS;
1858 vif->cfg.ssid_len = 0;
1859 memset(vif->cfg.ssid, '\0', sizeof(vif->cfg.ssid));
1860 bss_changed |= BSS_CHANGED_BSSID;
1861 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
1862
1863 LKPI_80211_LVIF_LOCK(lvif);
1864 /* Remove ni reference for this cache of lsta. */
1865 lvif->lvif_bss = NULL;
1866 lvif->lvif_bss_synched = false;
1867 LKPI_80211_LVIF_UNLOCK(lvif);
1868 lkpi_lsta_remove(lsta, lvif);
1869 /*
1870 * The very last release the reference on the ni for the ni/lsta on
1871 * lvif->lvif_bss. Upon return from this both ni and lsta are invalid
1872 * and potentially freed.
1873 */
1874 ieee80211_free_node(ni);
1875
1876 /* conf_tx */
1877
1878 /* Take the chan ctx down. */
1879 if (vif->chanctx_conf != NULL) {
1880 struct lkpi_chanctx *lchanctx;
1881 struct ieee80211_chanctx_conf *chanctx_conf;
1882
1883 chanctx_conf = vif->chanctx_conf;
1884 /* Remove vif context. */
1885 lkpi_80211_mo_unassign_vif_chanctx(hw, vif, &vif->bss_conf, &vif->chanctx_conf);
1886 /* NB: vif->chanctx_conf is NULL now. */
1887
1888 lkpi_hw_conf_idle(hw, true);
1889
1890 /* Remove chan ctx. */
1891 lkpi_80211_mo_remove_chanctx(hw, chanctx_conf);
1892 lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf);
1893 free(lchanctx, M_LKPI80211);
1894 }
1895
1896 error = EALREADY;
1897 out:
1898 LKPI_80211_LHW_UNLOCK(lhw);
1899 IEEE80211_LOCK(vap->iv_ic);
1900 outni:
1901 return (error);
1902 }
1903
1904 static int
lkpi_sta_assoc_to_auth(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1905 lkpi_sta_assoc_to_auth(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1906 {
1907 int error;
1908
1909 error = _lkpi_sta_assoc_to_down(vap, nstate, arg);
1910 if (error != 0 && error != EALREADY)
1911 return (error);
1912
1913 /* At this point iv_bss is long a new node! */
1914
1915 error |= lkpi_sta_scan_to_auth(vap, nstate, 0);
1916 return (error);
1917 }
1918
1919 static int
lkpi_sta_assoc_to_scan(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1920 lkpi_sta_assoc_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1921 {
1922 int error;
1923
1924 error = _lkpi_sta_assoc_to_down(vap, nstate, arg);
1925 return (error);
1926 }
1927
1928 static int
lkpi_sta_assoc_to_init(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1929 lkpi_sta_assoc_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1930 {
1931 int error;
1932
1933 error = _lkpi_sta_assoc_to_down(vap, nstate, arg);
1934 return (error);
1935 }
1936
1937 static int
lkpi_sta_assoc_to_run(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)1938 lkpi_sta_assoc_to_run(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
1939 {
1940 struct lkpi_hw *lhw;
1941 struct ieee80211_hw *hw;
1942 struct lkpi_vif *lvif;
1943 struct ieee80211_vif *vif;
1944 struct ieee80211_node *ni;
1945 struct lkpi_sta *lsta;
1946 struct ieee80211_sta *sta;
1947 struct ieee80211_prep_tx_info prep_tx_info;
1948 enum ieee80211_bss_changed bss_changed;
1949 int error;
1950
1951 lhw = vap->iv_ic->ic_softc;
1952 hw = LHW_TO_HW(lhw);
1953 lvif = VAP_TO_LVIF(vap);
1954 vif = LVIF_TO_VIF(lvif);
1955
1956 IEEE80211_UNLOCK(vap->iv_ic);
1957 LKPI_80211_LHW_LOCK(lhw);
1958
1959 LKPI_80211_LVIF_LOCK(lvif);
1960 /* XXX-BZ KASSERT later? */
1961 if (!lvif->lvif_bss_synched || lvif->lvif_bss == NULL) {
1962 #ifdef LINUXKPI_DEBUG_80211
1963 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
1964 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
1965 lvif, vap, vap->iv_bss, lvif->lvif_bss,
1966 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
1967 lvif->lvif_bss_synched);
1968 #endif
1969 LKPI_80211_LVIF_UNLOCK(lvif);
1970 error = ENOTRECOVERABLE;
1971 goto out;
1972 }
1973 lsta = lvif->lvif_bss;
1974 LKPI_80211_LVIF_UNLOCK(lvif);
1975 KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
1976 "lvif %p vap %p\n", __func__,
1977 lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
1978
1979 ni = lsta->ni; /* Reference held for lvif_bss. */
1980
1981 IMPROVE("ponder some of this moved to ic_newassoc, scan_assoc_success, "
1982 "and to lesser extend ieee80211_notify_node_join");
1983
1984 /* Finish assoc. */
1985 /* Update sta_state (AUTH to ASSOC) and set aid. */
1986 KASSERT(lsta->state == IEEE80211_STA_AUTH, ("%s: lsta %p state not "
1987 "AUTH: %#x\n", __func__, lsta, lsta->state));
1988 sta = LSTA_TO_STA(lsta);
1989 sta->aid = IEEE80211_NODE_AID(ni);
1990 #ifdef LKPI_80211_WME
1991 if (vap->iv_flags & IEEE80211_F_WME)
1992 sta->wme = true;
1993 #endif
1994 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_ASSOC);
1995 if (error != 0) {
1996 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(ASSOC) "
1997 "failed: %d\n", __func__, __LINE__, error);
1998 goto out;
1999 }
2000
2001 IMPROVE("wme / conf_tx [all]");
2002
2003 /* Update bss info (bss_info_changed) (assoc, aid, ..). */
2004 bss_changed = 0;
2005 #ifdef LKPI_80211_WME
2006 bss_changed |= lkpi_wme_update(lhw, vap, true);
2007 #endif
2008 if (!vif->cfg.assoc || vif->cfg.aid != IEEE80211_NODE_AID(ni)) {
2009 vif->cfg.assoc = true;
2010 vif->cfg.aid = IEEE80211_NODE_AID(ni);
2011 bss_changed |= BSS_CHANGED_ASSOC;
2012 }
2013 /* We set SSID but this is not BSSID! */
2014 vif->cfg.ssid_len = ni->ni_esslen;
2015 memcpy(vif->cfg.ssid, ni->ni_essid, ni->ni_esslen);
2016 if ((vap->iv_flags & IEEE80211_F_SHPREAMBLE) !=
2017 vif->bss_conf.use_short_preamble) {
2018 vif->bss_conf.use_short_preamble ^= 1;
2019 /* bss_changed |= BSS_CHANGED_??? */
2020 }
2021 if ((vap->iv_flags & IEEE80211_F_SHSLOT) !=
2022 vif->bss_conf.use_short_slot) {
2023 vif->bss_conf.use_short_slot ^= 1;
2024 /* bss_changed |= BSS_CHANGED_??? */
2025 }
2026 if ((ni->ni_flags & IEEE80211_NODE_QOS) !=
2027 vif->bss_conf.qos) {
2028 vif->bss_conf.qos ^= 1;
2029 bss_changed |= BSS_CHANGED_QOS;
2030 }
2031
2032 bss_changed |= lkpi_update_dtim_tsf(vif, ni, vap, __func__, __LINE__);
2033
2034 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
2035
2036 /* - change_chanctx (if needed)
2037 * - event_callback
2038 */
2039
2040 /* End mgd_complete_tx. */
2041 if (lsta->in_mgd) {
2042 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2043 prep_tx_info.success = true;
2044 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
2045 lsta->in_mgd = false;
2046 }
2047
2048 lkpi_hw_conf_idle(hw, false);
2049
2050 /*
2051 * And then:
2052 * - (more packets)?
2053 * - set_key
2054 * - set_default_unicast_key
2055 * - set_key (?)
2056 * - ipv6_addr_change (?)
2057 */
2058 /* Prepare_multicast && configure_filter. */
2059 lhw->update_mc = true;
2060 lkpi_update_mcast_filter(vap->iv_ic, true);
2061
2062 if (!ieee80211_node_is_authorized(ni)) {
2063 IMPROVE("net80211 does not consider node authorized");
2064 }
2065
2066 #if defined(LKPI_80211_HT)
2067 IMPROVE("Is this the right spot, has net80211 done all updates already?");
2068 lkpi_sta_sync_ht_from_ni(sta, ni, NULL);
2069 #endif
2070
2071 /* Update sta_state (ASSOC to AUTHORIZED). */
2072 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
2073 KASSERT(lsta->state == IEEE80211_STA_ASSOC, ("%s: lsta %p state not "
2074 "ASSOC: %#x\n", __func__, lsta, lsta->state));
2075 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTHORIZED);
2076 if (error != 0) {
2077 IMPROVE("undo some changes?");
2078 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTHORIZED) "
2079 "failed: %d\n", __func__, __LINE__, error);
2080 goto out;
2081 }
2082
2083 /* - drv_config (?)
2084 * - bss_info_changed
2085 * - set_rekey_data (?)
2086 *
2087 * And now we should be passing packets.
2088 */
2089 IMPROVE("Need that bssid setting, and the keys");
2090
2091 bss_changed = 0;
2092 bss_changed |= lkpi_update_dtim_tsf(vif, ni, vap, __func__, __LINE__);
2093 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
2094
2095 out:
2096 LKPI_80211_LHW_UNLOCK(lhw);
2097 IEEE80211_LOCK(vap->iv_ic);
2098 return (error);
2099 }
2100
2101 static int
lkpi_sta_auth_to_run(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2102 lkpi_sta_auth_to_run(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2103 {
2104 int error;
2105
2106 error = lkpi_sta_auth_to_assoc(vap, nstate, arg);
2107 if (error == 0)
2108 error = lkpi_sta_assoc_to_run(vap, nstate, arg);
2109 return (error);
2110 }
2111
2112 static int
lkpi_sta_run_to_assoc(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2113 lkpi_sta_run_to_assoc(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2114 {
2115 struct lkpi_hw *lhw;
2116 struct ieee80211_hw *hw;
2117 struct lkpi_vif *lvif;
2118 struct ieee80211_vif *vif;
2119 struct ieee80211_node *ni;
2120 struct lkpi_sta *lsta;
2121 struct ieee80211_sta *sta;
2122 struct ieee80211_prep_tx_info prep_tx_info;
2123 #if 0
2124 enum ieee80211_bss_changed bss_changed;
2125 #endif
2126 int error;
2127
2128 lhw = vap->iv_ic->ic_softc;
2129 hw = LHW_TO_HW(lhw);
2130 lvif = VAP_TO_LVIF(vap);
2131 vif = LVIF_TO_VIF(lvif);
2132
2133 LKPI_80211_LVIF_LOCK(lvif);
2134 #ifdef LINUXKPI_DEBUG_80211
2135 /* XXX-BZ KASSERT later; state going down so no action. */
2136 if (lvif->lvif_bss == NULL)
2137 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
2138 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
2139 lvif, vap, vap->iv_bss, lvif->lvif_bss,
2140 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
2141 lvif->lvif_bss_synched);
2142 #endif
2143 lsta = lvif->lvif_bss;
2144 LKPI_80211_LVIF_UNLOCK(lvif);
2145 KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
2146 "lvif %p vap %p\n", __func__,
2147 lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
2148
2149 ni = lsta->ni; /* Reference held for lvif_bss. */
2150 sta = LSTA_TO_STA(lsta);
2151
2152 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2153
2154 IEEE80211_UNLOCK(vap->iv_ic);
2155 LKPI_80211_LHW_LOCK(lhw);
2156
2157 /* flush, drop. */
2158 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true);
2159
2160 IMPROVE("What are the proper conditions for DEAUTH_NEED_MGD_TX_PREP?");
2161 if (ieee80211_hw_check(hw, DEAUTH_NEED_MGD_TX_PREP) &&
2162 !lsta->in_mgd) {
2163 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2164 prep_tx_info.duration = PREP_TX_INFO_DURATION;
2165 lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
2166 lsta->in_mgd = true;
2167 }
2168
2169 LKPI_80211_LHW_UNLOCK(lhw);
2170 IEEE80211_LOCK(vap->iv_ic);
2171
2172 /* Call iv_newstate first so we get potential DISASSOC packet out. */
2173 error = lvif->iv_newstate(vap, nstate, arg);
2174 if (error != 0) {
2175 ic_printf(vap->iv_ic, "%s:%d: iv_newstate(%p, %d, %d) "
2176 "failed: %d\n", __func__, __LINE__, vap, nstate, arg, error);
2177 goto outni;
2178 }
2179
2180 IEEE80211_UNLOCK(vap->iv_ic);
2181
2182 /* Ensure the packets get out. */
2183 lkpi_80211_flush_tx(lhw, lsta);
2184
2185 LKPI_80211_LHW_LOCK(lhw);
2186
2187 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2188
2189 /* Wake tx queues to get packet(s) out. */
2190 lkpi_wake_tx_queues(hw, sta, false, true);
2191
2192 /* flush, no drop */
2193 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false);
2194
2195 /* End mgd_complete_tx. */
2196 if (lsta->in_mgd) {
2197 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2198 prep_tx_info.success = false;
2199 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
2200 lsta->in_mgd = false;
2201 }
2202
2203 #if 0
2204 /* sync_rx_queues */
2205 lkpi_80211_mo_sync_rx_queues(hw);
2206
2207 /* sta_pre_rcu_remove */
2208 lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta);
2209 #endif
2210
2211 /* Take the station down. */
2212
2213 /* Adjust sta and change state (from AUTHORIZED) to ASSOC. */
2214 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
2215 KASSERT(lsta->state == IEEE80211_STA_AUTHORIZED, ("%s: lsta %p state not "
2216 "AUTHORIZED: %#x\n", __func__, lsta, lsta->state));
2217 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_ASSOC);
2218 if (error != 0) {
2219 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(ASSOC) "
2220 "failed: %d\n", __func__, __LINE__, error);
2221 goto out;
2222 }
2223
2224 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2225
2226 /* Update sta_state (ASSOC to AUTH). */
2227 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
2228 KASSERT(lsta->state == IEEE80211_STA_ASSOC, ("%s: lsta %p state not "
2229 "ASSOC: %#x\n", __func__, lsta, lsta->state));
2230 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTH);
2231 if (error != 0) {
2232 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTH) "
2233 "failed: %d\n", __func__, __LINE__, error);
2234 goto out;
2235 }
2236
2237 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2238
2239 #if 0
2240 /* Update bss info (bss_info_changed) (assoc, aid, ..). */
2241 lkpi_disassoc(sta, vif, lhw);
2242 #endif
2243
2244 error = EALREADY;
2245 out:
2246 LKPI_80211_LHW_UNLOCK(lhw);
2247 IEEE80211_LOCK(vap->iv_ic);
2248 outni:
2249 return (error);
2250 }
2251
2252 static int
lkpi_sta_run_to_init(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2253 lkpi_sta_run_to_init(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2254 {
2255 struct lkpi_hw *lhw;
2256 struct ieee80211_hw *hw;
2257 struct lkpi_vif *lvif;
2258 struct ieee80211_vif *vif;
2259 struct ieee80211_node *ni;
2260 struct lkpi_sta *lsta;
2261 struct ieee80211_sta *sta;
2262 struct ieee80211_prep_tx_info prep_tx_info;
2263 enum ieee80211_bss_changed bss_changed;
2264 int error;
2265
2266 lhw = vap->iv_ic->ic_softc;
2267 hw = LHW_TO_HW(lhw);
2268 lvif = VAP_TO_LVIF(vap);
2269 vif = LVIF_TO_VIF(lvif);
2270
2271 IEEE80211_UNLOCK(vap->iv_ic);
2272 LKPI_80211_LHW_LOCK(lhw);
2273
2274 LKPI_80211_LVIF_LOCK(lvif);
2275 #ifdef LINUXKPI_DEBUG_80211
2276 /* XXX-BZ KASSERT later; state going down so no action. */
2277 if (lvif->lvif_bss == NULL)
2278 ic_printf(vap->iv_ic, "%s:%d: lvif %p vap %p iv_bss %p lvif_bss %p "
2279 "lvif_bss->ni %p synched %d\n", __func__, __LINE__,
2280 lvif, vap, vap->iv_bss, lvif->lvif_bss,
2281 (lvif->lvif_bss != NULL) ? lvif->lvif_bss->ni : NULL,
2282 lvif->lvif_bss_synched);
2283 #endif
2284 lsta = lvif->lvif_bss;
2285 LKPI_80211_LVIF_UNLOCK(lvif);
2286 KASSERT(lsta != NULL && lsta->ni != NULL, ("%s: lsta %p ni %p "
2287 "lvif %p vap %p\n", __func__,
2288 lsta, (lsta != NULL) ? lsta->ni : NULL, lvif, vap));
2289
2290 ni = lsta->ni; /* Reference held for lvif_bss. */
2291 sta = LSTA_TO_STA(lsta);
2292
2293 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2294
2295 /* flush, drop. */
2296 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), true);
2297
2298 IMPROVE("What are the proper conditions for DEAUTH_NEED_MGD_TX_PREP?");
2299 if (ieee80211_hw_check(hw, DEAUTH_NEED_MGD_TX_PREP) &&
2300 !lsta->in_mgd) {
2301 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2302 prep_tx_info.duration = PREP_TX_INFO_DURATION;
2303 lkpi_80211_mo_mgd_prepare_tx(hw, vif, &prep_tx_info);
2304 lsta->in_mgd = true;
2305 }
2306
2307 LKPI_80211_LHW_UNLOCK(lhw);
2308 IEEE80211_LOCK(vap->iv_ic);
2309
2310 /* Call iv_newstate first so we get potential DISASSOC packet out. */
2311 error = lvif->iv_newstate(vap, nstate, arg);
2312 if (error != 0) {
2313 ic_printf(vap->iv_ic, "%s:%d: iv_newstate(%p, %d, %d) "
2314 "failed: %d\n", __func__, __LINE__, vap, nstate, arg, error);
2315 goto outni;
2316 }
2317
2318 IEEE80211_UNLOCK(vap->iv_ic);
2319
2320 /* Ensure the packets get out. */
2321 lkpi_80211_flush_tx(lhw, lsta);
2322
2323 LKPI_80211_LHW_LOCK(lhw);
2324
2325 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2326
2327 /* Wake tx queues to get packet(s) out. */
2328 lkpi_wake_tx_queues(hw, sta, false, true);
2329
2330 /* flush, no drop */
2331 lkpi_80211_mo_flush(hw, vif, nitems(sta->txq), false);
2332
2333 /* End mgd_complete_tx. */
2334 if (lsta->in_mgd) {
2335 memset(&prep_tx_info, 0, sizeof(prep_tx_info));
2336 prep_tx_info.success = false;
2337 lkpi_80211_mo_mgd_complete_tx(hw, vif, &prep_tx_info);
2338 lsta->in_mgd = false;
2339 }
2340
2341 /* sync_rx_queues */
2342 lkpi_80211_mo_sync_rx_queues(hw);
2343
2344 /* sta_pre_rcu_remove */
2345 lkpi_80211_mo_sta_pre_rcu_remove(hw, vif, sta);
2346
2347 /* Take the station down. */
2348
2349 /* Adjust sta and change state (from AUTHORIZED) to ASSOC. */
2350 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
2351 KASSERT(lsta->state == IEEE80211_STA_AUTHORIZED, ("%s: lsta %p state not "
2352 "AUTHORIZED: %#x\n", __func__, lsta, lsta->state));
2353 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_ASSOC);
2354 if (error != 0) {
2355 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(ASSOC) "
2356 "failed: %d\n", __func__, __LINE__, error);
2357 goto out;
2358 }
2359
2360 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2361
2362 /* Update sta_state (ASSOC to AUTH). */
2363 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
2364 KASSERT(lsta->state == IEEE80211_STA_ASSOC, ("%s: lsta %p state not "
2365 "ASSOC: %#x\n", __func__, lsta, lsta->state));
2366 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_AUTH);
2367 if (error != 0) {
2368 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(AUTH) "
2369 "failed: %d\n", __func__, __LINE__, error);
2370 goto out;
2371 }
2372
2373 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2374
2375 /* Update sta and change state (from AUTH) to NONE. */
2376 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
2377 KASSERT(lsta->state == IEEE80211_STA_AUTH, ("%s: lsta %p state not "
2378 "AUTH: %#x\n", __func__, lsta, lsta->state));
2379 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NONE);
2380 if (error != 0) {
2381 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NONE) "
2382 "failed: %d\n", __func__, __LINE__, error);
2383 goto out;
2384 }
2385
2386 bss_changed = 0;
2387 /*
2388 * Start updating bss info (bss_info_changed) (assoc, aid, ..).
2389 *
2390 * One would expect this to happen when going off AUTHORIZED.
2391 * See comment there; removes the sta from fw if not careful
2392 * (bss_info_changed() change is executed right away).
2393 *
2394 * We need to do this now, before sta changes to IEEE80211_STA_NOTEXIST
2395 * as otherwise drivers (iwlwifi at least) will silently not remove
2396 * the sta from the firmware and when we will add a new one trigger
2397 * a fw assert.
2398 *
2399 * The order which works best so far avoiding early removal or silent
2400 * non-removal seems to be (for iwlwifi::mld-mac80211.c cases;
2401 * the iwlwifi:mac80211.c case still to be tested):
2402 * 1) lkpi_disassoc(): set vif->cfg.assoc = false (aid=0 side effect here)
2403 * 2) call the last sta_state update -> IEEE80211_STA_NOTEXIST
2404 * (removes the sta given assoc is false)
2405 * 3) add the remaining BSS_CHANGED changes and call bss_info_changed()
2406 * 4) call unassign_vif_chanctx
2407 * 5) call lkpi_hw_conf_idle
2408 * 6) call remove_chanctx
2409 */
2410 bss_changed |= lkpi_disassoc(sta, vif, lhw);
2411
2412 lkpi_lsta_dump(lsta, ni, __func__, __LINE__);
2413
2414 /* Adjust sta and change state (from NONE) to NOTEXIST. */
2415 KASSERT(lsta != NULL, ("%s: ni %p lsta is NULL\n", __func__, ni));
2416 KASSERT(lsta->state == IEEE80211_STA_NONE, ("%s: lsta %p state not "
2417 "NONE: %#x, nstate %d arg %d\n", __func__, lsta, lsta->state, nstate, arg));
2418 error = lkpi_80211_mo_sta_state(hw, vif, lsta, IEEE80211_STA_NOTEXIST);
2419 if (error != 0) {
2420 IMPROVE("do we need to undo the chan ctx?");
2421 ic_printf(vap->iv_ic, "%s:%d: mo_sta_state(NOTEXIST) "
2422 "failed: %d\n", __func__, __LINE__, error);
2423 goto out;
2424 }
2425
2426 lkpi_lsta_remove(lsta, lvif);
2427
2428 lkpi_lsta_dump(lsta, ni, __func__, __LINE__); /* sta no longer save to use. */
2429
2430 IMPROVE("Any bss_info changes to announce?");
2431 vif->bss_conf.qos = 0;
2432 bss_changed |= BSS_CHANGED_QOS;
2433 vif->cfg.ssid_len = 0;
2434 memset(vif->cfg.ssid, '\0', sizeof(vif->cfg.ssid));
2435 bss_changed |= BSS_CHANGED_BSSID;
2436 vif->bss_conf.use_short_preamble = false;
2437 vif->bss_conf.qos = false;
2438 /* XXX BSS_CHANGED_???? */
2439 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, bss_changed);
2440
2441 LKPI_80211_LVIF_LOCK(lvif);
2442 /* Remove ni reference for this cache of lsta. */
2443 lvif->lvif_bss = NULL;
2444 lvif->lvif_bss_synched = false;
2445 LKPI_80211_LVIF_UNLOCK(lvif);
2446 /*
2447 * The very last release the reference on the ni for the ni/lsta on
2448 * lvif->lvif_bss. Upon return from this both ni and lsta are invalid
2449 * and potentially freed.
2450 */
2451 ieee80211_free_node(ni);
2452
2453 /* conf_tx */
2454
2455 /* Take the chan ctx down. */
2456 if (vif->chanctx_conf != NULL) {
2457 struct lkpi_chanctx *lchanctx;
2458 struct ieee80211_chanctx_conf *chanctx_conf;
2459
2460 chanctx_conf = vif->chanctx_conf;
2461 /* Remove vif context. */
2462 lkpi_80211_mo_unassign_vif_chanctx(hw, vif, &vif->bss_conf, &vif->chanctx_conf);
2463 /* NB: vif->chanctx_conf is NULL now. */
2464
2465 lkpi_hw_conf_idle(hw, true);
2466
2467 /* Remove chan ctx. */
2468 lkpi_80211_mo_remove_chanctx(hw, chanctx_conf);
2469 lchanctx = CHANCTX_CONF_TO_LCHANCTX(chanctx_conf);
2470 free(lchanctx, M_LKPI80211);
2471 }
2472
2473 error = EALREADY;
2474 out:
2475 LKPI_80211_LHW_UNLOCK(lhw);
2476 IEEE80211_LOCK(vap->iv_ic);
2477 outni:
2478 return (error);
2479 }
2480
2481 static int
lkpi_sta_run_to_scan(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2482 lkpi_sta_run_to_scan(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2483 {
2484
2485 return (lkpi_sta_run_to_init(vap, nstate, arg));
2486 }
2487
2488 static int
lkpi_sta_run_to_auth(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2489 lkpi_sta_run_to_auth(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2490 {
2491 int error;
2492
2493 error = lkpi_sta_run_to_init(vap, nstate, arg);
2494 if (error != 0 && error != EALREADY)
2495 return (error);
2496
2497 /* At this point iv_bss is long a new node! */
2498
2499 error |= lkpi_sta_scan_to_auth(vap, nstate, 0);
2500 return (error);
2501 }
2502
2503 /* -------------------------------------------------------------------------- */
2504
2505 /*
2506 * The matches the documented state changes in net80211::sta_newstate().
2507 * XXX (1) without CSA and SLEEP yet, * XXX (2) not all unhandled cases
2508 * there are "invalid" (so there is a room for failure here).
2509 */
2510 struct fsm_state {
2511 /* INIT, SCAN, AUTH, ASSOC, CAC, RUN, CSA, SLEEP */
2512 enum ieee80211_state ostate;
2513 enum ieee80211_state nstate;
2514 int (*handler)(struct ieee80211vap *, enum ieee80211_state, int);
2515 } sta_state_fsm[] = {
2516 { IEEE80211_S_INIT, IEEE80211_S_INIT, lkpi_sta_state_do_nada },
2517 { IEEE80211_S_SCAN, IEEE80211_S_INIT, lkpi_sta_state_do_nada }, /* scan_to_init */
2518 { IEEE80211_S_AUTH, IEEE80211_S_INIT, lkpi_sta_auth_to_init }, /* not explicitly in sta_newstate() */
2519 { IEEE80211_S_ASSOC, IEEE80211_S_INIT, lkpi_sta_assoc_to_init }, /* Send DEAUTH. */
2520 { IEEE80211_S_RUN, IEEE80211_S_INIT, lkpi_sta_run_to_init }, /* Send DISASSOC. */
2521
2522 { IEEE80211_S_INIT, IEEE80211_S_SCAN, lkpi_sta_state_do_nada },
2523 { IEEE80211_S_SCAN, IEEE80211_S_SCAN, lkpi_sta_state_do_nada },
2524 { IEEE80211_S_AUTH, IEEE80211_S_SCAN, lkpi_sta_auth_to_scan },
2525 { IEEE80211_S_ASSOC, IEEE80211_S_SCAN, lkpi_sta_assoc_to_scan },
2526 { IEEE80211_S_RUN, IEEE80211_S_SCAN, lkpi_sta_run_to_scan }, /* Beacon miss. */
2527
2528 { IEEE80211_S_INIT, IEEE80211_S_AUTH, lkpi_sta_scan_to_auth }, /* Send AUTH. */
2529 { IEEE80211_S_SCAN, IEEE80211_S_AUTH, lkpi_sta_scan_to_auth }, /* Send AUTH. */
2530 { IEEE80211_S_AUTH, IEEE80211_S_AUTH, lkpi_sta_a_to_a }, /* Send ?AUTH. */
2531 { IEEE80211_S_ASSOC, IEEE80211_S_AUTH, lkpi_sta_assoc_to_auth }, /* Send ?AUTH. */
2532 { IEEE80211_S_RUN, IEEE80211_S_AUTH, lkpi_sta_run_to_auth }, /* Send ?AUTH. */
2533
2534 { IEEE80211_S_AUTH, IEEE80211_S_ASSOC, lkpi_sta_auth_to_assoc }, /* Send ASSOCREQ. */
2535 { IEEE80211_S_ASSOC, IEEE80211_S_ASSOC, lkpi_sta_a_to_a }, /* Send ASSOCREQ. */
2536 { IEEE80211_S_RUN, IEEE80211_S_ASSOC, lkpi_sta_run_to_assoc }, /* Send ASSOCREQ/REASSOCREQ. */
2537
2538 { IEEE80211_S_AUTH, IEEE80211_S_RUN, lkpi_sta_auth_to_run },
2539 { IEEE80211_S_ASSOC, IEEE80211_S_RUN, lkpi_sta_assoc_to_run },
2540 { IEEE80211_S_RUN, IEEE80211_S_RUN, lkpi_sta_state_do_nada },
2541
2542 /* Dummy at the end without handler. */
2543 { IEEE80211_S_INIT, IEEE80211_S_INIT, NULL },
2544 };
2545
2546 static int
lkpi_iv_newstate(struct ieee80211vap * vap,enum ieee80211_state nstate,int arg)2547 lkpi_iv_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg)
2548 {
2549 struct ieee80211com *ic;
2550 struct lkpi_hw *lhw;
2551 struct lkpi_vif *lvif;
2552 struct ieee80211_vif *vif;
2553 struct fsm_state *s;
2554 enum ieee80211_state ostate;
2555 int error;
2556
2557 ic = vap->iv_ic;
2558 IEEE80211_LOCK_ASSERT(ic);
2559 ostate = vap->iv_state;
2560
2561 #ifdef LINUXKPI_DEBUG_80211
2562 if (linuxkpi_debug_80211 & D80211_TRACE)
2563 ic_printf(vap->iv_ic, "%s:%d: vap %p nstate %#x arg %#x\n",
2564 __func__, __LINE__, vap, nstate, arg);
2565 #endif
2566
2567 if (vap->iv_opmode == IEEE80211_M_STA) {
2568
2569 lhw = ic->ic_softc;
2570 lvif = VAP_TO_LVIF(vap);
2571 vif = LVIF_TO_VIF(lvif);
2572
2573 /* No need to replicate this in most state handlers. */
2574 if (ostate == IEEE80211_S_SCAN && nstate != IEEE80211_S_SCAN)
2575 lkpi_stop_hw_scan(lhw, vif);
2576
2577 s = sta_state_fsm;
2578
2579 } else {
2580 ic_printf(vap->iv_ic, "%s: only station mode currently supported: "
2581 "cap %p iv_opmode %d\n", __func__, vap, vap->iv_opmode);
2582 return (ENOSYS);
2583 }
2584
2585 error = 0;
2586 for (; s->handler != NULL; s++) {
2587 if (ostate == s->ostate && nstate == s->nstate) {
2588 #ifdef LINUXKPI_DEBUG_80211
2589 if (linuxkpi_debug_80211 & D80211_TRACE)
2590 ic_printf(vap->iv_ic, "%s: new state %d (%s) ->"
2591 " %d (%s): arg %d.\n", __func__,
2592 ostate, ieee80211_state_name[ostate],
2593 nstate, ieee80211_state_name[nstate], arg);
2594 #endif
2595 error = s->handler(vap, nstate, arg);
2596 break;
2597 }
2598 }
2599 IEEE80211_LOCK_ASSERT(vap->iv_ic);
2600
2601 if (s->handler == NULL) {
2602 IMPROVE("turn this into a KASSERT\n");
2603 ic_printf(vap->iv_ic, "%s: unsupported state transition "
2604 "%d (%s) -> %d (%s)\n", __func__,
2605 ostate, ieee80211_state_name[ostate],
2606 nstate, ieee80211_state_name[nstate]);
2607 return (ENOSYS);
2608 }
2609
2610 if (error == EALREADY) {
2611 #ifdef LINUXKPI_DEBUG_80211
2612 if (linuxkpi_debug_80211 & D80211_TRACE)
2613 ic_printf(vap->iv_ic, "%s: state transition %d (%s) -> "
2614 "%d (%s): iv_newstate already handled: %d.\n",
2615 __func__, ostate, ieee80211_state_name[ostate],
2616 nstate, ieee80211_state_name[nstate], error);
2617 #endif
2618 return (0);
2619 }
2620
2621 if (error != 0) {
2622 ic_printf(vap->iv_ic, "%s: error %d during state transition "
2623 "%d (%s) -> %d (%s)\n", __func__, error,
2624 ostate, ieee80211_state_name[ostate],
2625 nstate, ieee80211_state_name[nstate]);
2626 return (error);
2627 }
2628
2629 #ifdef LINUXKPI_DEBUG_80211
2630 if (linuxkpi_debug_80211 & D80211_TRACE)
2631 ic_printf(vap->iv_ic, "%s:%d: vap %p nstate %#x arg %#x "
2632 "calling net80211 parent\n",
2633 __func__, __LINE__, vap, nstate, arg);
2634 #endif
2635
2636 return (lvif->iv_newstate(vap, nstate, arg));
2637 }
2638
2639 /* -------------------------------------------------------------------------- */
2640
2641 /*
2642 * We overload (*iv_update_bss) as otherwise we have cases in, e.g.,
2643 * net80211::ieee80211_sta_join1() where vap->iv_bss gets replaced by a
2644 * new node without us knowing and thus our ni/lsta are out of sync.
2645 */
2646 static struct ieee80211_node *
lkpi_iv_update_bss(struct ieee80211vap * vap,struct ieee80211_node * ni)2647 lkpi_iv_update_bss(struct ieee80211vap *vap, struct ieee80211_node *ni)
2648 {
2649 struct lkpi_vif *lvif;
2650 struct ieee80211_node *rni;
2651
2652 IEEE80211_LOCK_ASSERT(vap->iv_ic);
2653
2654 lvif = VAP_TO_LVIF(vap);
2655
2656 LKPI_80211_LVIF_LOCK(lvif);
2657 lvif->lvif_bss_synched = false;
2658 LKPI_80211_LVIF_UNLOCK(lvif);
2659
2660 rni = lvif->iv_update_bss(vap, ni);
2661 return (rni);
2662 }
2663
2664 #ifdef LKPI_80211_WME
2665 static int
lkpi_wme_update(struct lkpi_hw * lhw,struct ieee80211vap * vap,bool planned)2666 lkpi_wme_update(struct lkpi_hw *lhw, struct ieee80211vap *vap, bool planned)
2667 {
2668 struct ieee80211com *ic;
2669 struct ieee80211_hw *hw;
2670 struct lkpi_vif *lvif;
2671 struct ieee80211_vif *vif;
2672 struct chanAccParams chp;
2673 struct wmeParams wmeparr[WME_NUM_AC];
2674 struct ieee80211_tx_queue_params txqp;
2675 enum ieee80211_bss_changed changed;
2676 int error;
2677 uint16_t ac;
2678
2679 IMPROVE();
2680 KASSERT(WME_NUM_AC == IEEE80211_NUM_ACS, ("%s: WME_NUM_AC %d != "
2681 "IEEE80211_NUM_ACS %d\n", __func__, WME_NUM_AC, IEEE80211_NUM_ACS));
2682
2683 if (vap == NULL)
2684 return (0);
2685
2686 if ((vap->iv_flags & IEEE80211_F_WME) == 0)
2687 return (0);
2688
2689 if (lhw->ops->conf_tx == NULL)
2690 return (0);
2691
2692 if (!planned && (vap->iv_state != IEEE80211_S_RUN)) {
2693 lhw->update_wme = true;
2694 return (0);
2695 }
2696 lhw->update_wme = false;
2697
2698 ic = lhw->ic;
2699 ieee80211_wme_ic_getparams(ic, &chp);
2700 IEEE80211_LOCK(ic);
2701 for (ac = 0; ac < WME_NUM_AC; ac++)
2702 wmeparr[ac] = chp.cap_wmeParams[ac];
2703 IEEE80211_UNLOCK(ic);
2704
2705 hw = LHW_TO_HW(lhw);
2706 lvif = VAP_TO_LVIF(vap);
2707 vif = LVIF_TO_VIF(lvif);
2708
2709 /* Configure tx queues (conf_tx) & send BSS_CHANGED_QOS. */
2710 LKPI_80211_LHW_LOCK(lhw);
2711 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
2712 struct wmeParams *wmep;
2713
2714 wmep = &wmeparr[ac];
2715 bzero(&txqp, sizeof(txqp));
2716 txqp.cw_min = wmep->wmep_logcwmin;
2717 txqp.cw_max = wmep->wmep_logcwmax;
2718 txqp.txop = wmep->wmep_txopLimit;
2719 txqp.aifs = wmep->wmep_aifsn;
2720 error = lkpi_80211_mo_conf_tx(hw, vif, /* link_id */0, ac, &txqp);
2721 if (error != 0)
2722 ic_printf(ic, "%s: conf_tx ac %u failed %d\n",
2723 __func__, ac, error);
2724 }
2725 LKPI_80211_LHW_UNLOCK(lhw);
2726 changed = BSS_CHANGED_QOS;
2727 if (!planned)
2728 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, changed);
2729
2730 return (changed);
2731 }
2732 #endif
2733
2734 static int
lkpi_ic_wme_update(struct ieee80211com * ic)2735 lkpi_ic_wme_update(struct ieee80211com *ic)
2736 {
2737 #ifdef LKPI_80211_WME
2738 struct ieee80211vap *vap;
2739 struct lkpi_hw *lhw;
2740
2741 IMPROVE("Use the per-VAP callback in net80211.");
2742 vap = TAILQ_FIRST(&ic->ic_vaps);
2743 if (vap == NULL)
2744 return (0);
2745
2746 lhw = ic->ic_softc;
2747
2748 lkpi_wme_update(lhw, vap, false);
2749 #endif
2750 return (0); /* unused */
2751 }
2752
2753 static struct ieee80211vap *
lkpi_ic_vap_create(struct ieee80211com * ic,const char name[IFNAMSIZ],int unit,enum ieee80211_opmode opmode,int flags,const uint8_t bssid[IEEE80211_ADDR_LEN],const uint8_t mac[IEEE80211_ADDR_LEN])2754 lkpi_ic_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ],
2755 int unit, enum ieee80211_opmode opmode, int flags,
2756 const uint8_t bssid[IEEE80211_ADDR_LEN],
2757 const uint8_t mac[IEEE80211_ADDR_LEN])
2758 {
2759 struct lkpi_hw *lhw;
2760 struct ieee80211_hw *hw;
2761 struct lkpi_vif *lvif;
2762 struct ieee80211vap *vap;
2763 struct ieee80211_vif *vif;
2764 struct ieee80211_tx_queue_params txqp;
2765 enum ieee80211_bss_changed changed;
2766 size_t len;
2767 int error, i;
2768 uint16_t ac;
2769
2770 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* 1 so far. Add <n> once this works. */
2771 return (NULL);
2772
2773 lhw = ic->ic_softc;
2774 hw = LHW_TO_HW(lhw);
2775
2776 len = sizeof(*lvif);
2777 len += hw->vif_data_size; /* vif->drv_priv */
2778
2779 lvif = malloc(len, M_80211_VAP, M_WAITOK | M_ZERO);
2780 mtx_init(&lvif->mtx, "lvif", NULL, MTX_DEF);
2781 TAILQ_INIT(&lvif->lsta_head);
2782 lvif->lvif_bss = NULL;
2783 lvif->lvif_bss_synched = false;
2784 vap = LVIF_TO_VAP(lvif);
2785
2786 vif = LVIF_TO_VIF(lvif);
2787 memcpy(vif->addr, mac, IEEE80211_ADDR_LEN);
2788 vif->p2p = false;
2789 vif->probe_req_reg = false;
2790 vif->type = lkpi_opmode_to_vif_type(opmode);
2791 lvif->wdev.iftype = vif->type;
2792 /* Need to fill in other fields as well. */
2793 IMPROVE();
2794
2795 /* XXX-BZ hardcoded for now! */
2796 #if 1
2797 vif->chanctx_conf = NULL;
2798 vif->bss_conf.vif = vif;
2799 /* vap->iv_myaddr is not set until net80211::vap_setup or vap_attach. */
2800 IEEE80211_ADDR_COPY(vif->bss_conf.addr, mac);
2801 vif->bss_conf.link_id = 0; /* Non-MLO operation. */
2802 vif->bss_conf.chandef.width = NL80211_CHAN_WIDTH_20_NOHT;
2803 vif->bss_conf.use_short_preamble = false; /* vap->iv_flags IEEE80211_F_SHPREAMBLE */
2804 vif->bss_conf.use_short_slot = false; /* vap->iv_flags IEEE80211_F_SHSLOT */
2805 vif->bss_conf.qos = false;
2806 vif->bss_conf.use_cts_prot = false; /* vap->iv_protmode */
2807 vif->bss_conf.ht_operation_mode = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
2808 vif->cfg.aid = 0;
2809 vif->cfg.assoc = false;
2810 vif->cfg.idle = true;
2811 vif->cfg.ps = false;
2812 IMPROVE("Check other fields and then figure out whats is left elsewhere of them");
2813 /*
2814 * We need to initialize it to something as the bss_info_changed call
2815 * will try to copy from it in iwlwifi and NULL is a panic.
2816 * We will set the proper one in scan_to_auth() before being assoc.
2817 */
2818 vif->bss_conf.bssid = ieee80211broadcastaddr;
2819 #endif
2820 #if 0
2821 vif->bss_conf.dtim_period = 0; /* IEEE80211_DTIM_DEFAULT ; must stay 0. */
2822 IEEE80211_ADDR_COPY(vif->bss_conf.bssid, bssid);
2823 vif->bss_conf.beacon_int = ic->ic_bintval;
2824 /* iwlwifi bug. */
2825 if (vif->bss_conf.beacon_int < 16)
2826 vif->bss_conf.beacon_int = 16;
2827 #endif
2828
2829 /* Link Config */
2830 vif->link_conf[0] = &vif->bss_conf;
2831 for (i = 0; i < nitems(vif->link_conf); i++) {
2832 IMPROVE("more than 1 link one day");
2833 }
2834
2835 /* Setup queue defaults; driver may override in (*add_interface). */
2836 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
2837 if (ieee80211_hw_check(hw, QUEUE_CONTROL))
2838 vif->hw_queue[i] = IEEE80211_INVAL_HW_QUEUE;
2839 else if (hw->queues >= IEEE80211_NUM_ACS)
2840 vif->hw_queue[i] = i;
2841 else
2842 vif->hw_queue[i] = 0;
2843
2844 /* Initialize the queue to running. Stopped? */
2845 lvif->hw_queue_stopped[i] = false;
2846 }
2847 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE;
2848
2849 IMPROVE();
2850
2851 error = lkpi_80211_mo_start(hw);
2852 if (error != 0) {
2853 ic_printf(ic, "%s: failed to start hw: %d\n", __func__, error);
2854 mtx_destroy(&lvif->mtx);
2855 free(lvif, M_80211_VAP);
2856 return (NULL);
2857 }
2858
2859 error = lkpi_80211_mo_add_interface(hw, vif);
2860 if (error != 0) {
2861 IMPROVE(); /* XXX-BZ mo_stop()? */
2862 ic_printf(ic, "%s: failed to add interface: %d\n", __func__, error);
2863 mtx_destroy(&lvif->mtx);
2864 free(lvif, M_80211_VAP);
2865 return (NULL);
2866 }
2867
2868 LKPI_80211_LHW_LVIF_LOCK(lhw);
2869 TAILQ_INSERT_TAIL(&lhw->lvif_head, lvif, lvif_entry);
2870 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
2871
2872 /* Set bss_info. */
2873 changed = 0;
2874 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, changed);
2875
2876 /* Configure tx queues (conf_tx), default WME & send BSS_CHANGED_QOS. */
2877 IMPROVE("Hardcoded values; to fix see 802.11-2016, 9.4.2.29 EDCA Parameter Set element");
2878 LKPI_80211_LHW_LOCK(lhw);
2879 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
2880
2881 bzero(&txqp, sizeof(txqp));
2882 txqp.cw_min = 15;
2883 txqp.cw_max = 1023;
2884 txqp.txop = 0;
2885 txqp.aifs = 2;
2886 error = lkpi_80211_mo_conf_tx(hw, vif, /* link_id */0, ac, &txqp);
2887 if (error != 0)
2888 ic_printf(ic, "%s: conf_tx ac %u failed %d\n",
2889 __func__, ac, error);
2890 }
2891 LKPI_80211_LHW_UNLOCK(lhw);
2892 changed = BSS_CHANGED_QOS;
2893 lkpi_80211_mo_bss_info_changed(hw, vif, &vif->bss_conf, changed);
2894
2895 /* Force MC init. */
2896 lkpi_update_mcast_filter(ic, true);
2897
2898 IMPROVE();
2899
2900 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid);
2901
2902 /* Override with LinuxKPI method so we can drive mac80211/cfg80211. */
2903 lvif->iv_newstate = vap->iv_newstate;
2904 vap->iv_newstate = lkpi_iv_newstate;
2905 lvif->iv_update_bss = vap->iv_update_bss;
2906 vap->iv_update_bss = lkpi_iv_update_bss;
2907
2908 /* Key management. */
2909 if (lhw->ops->set_key != NULL) {
2910 #ifdef LKPI_80211_HW_CRYPTO
2911 vap->iv_key_set = lkpi_iv_key_set;
2912 vap->iv_key_delete = lkpi_iv_key_delete;
2913 #endif
2914 }
2915
2916 #ifdef LKPI_80211_HT
2917 /* Stay with the iv_ampdu_rxmax,limit / iv_ampdu_density defaults until later. */
2918 #endif
2919
2920 ieee80211_ratectl_init(vap);
2921
2922 /* Complete setup. */
2923 ieee80211_vap_attach(vap, ieee80211_media_change,
2924 ieee80211_media_status, mac);
2925
2926 if (hw->max_listen_interval == 0)
2927 hw->max_listen_interval = 7 * (ic->ic_lintval / ic->ic_bintval);
2928 hw->conf.listen_interval = hw->max_listen_interval;
2929 ic->ic_set_channel(ic);
2930
2931 /* XXX-BZ do we need to be able to update these? */
2932 hw->wiphy->frag_threshold = vap->iv_fragthreshold;
2933 lkpi_80211_mo_set_frag_threshold(hw, vap->iv_fragthreshold);
2934 hw->wiphy->rts_threshold = vap->iv_rtsthreshold;
2935 lkpi_80211_mo_set_rts_threshold(hw, vap->iv_rtsthreshold);
2936 /* any others? */
2937 IMPROVE();
2938
2939 return (vap);
2940 }
2941
2942 void
linuxkpi_ieee80211_unregister_hw(struct ieee80211_hw * hw)2943 linuxkpi_ieee80211_unregister_hw(struct ieee80211_hw *hw)
2944 {
2945
2946 wiphy_unregister(hw->wiphy);
2947 linuxkpi_ieee80211_ifdetach(hw);
2948
2949 IMPROVE();
2950 }
2951
2952 void
linuxkpi_ieee80211_restart_hw(struct ieee80211_hw * hw)2953 linuxkpi_ieee80211_restart_hw(struct ieee80211_hw *hw)
2954 {
2955
2956 TODO();
2957 }
2958
2959 static void
lkpi_ic_vap_delete(struct ieee80211vap * vap)2960 lkpi_ic_vap_delete(struct ieee80211vap *vap)
2961 {
2962 struct ieee80211com *ic;
2963 struct lkpi_hw *lhw;
2964 struct ieee80211_hw *hw;
2965 struct lkpi_vif *lvif;
2966 struct ieee80211_vif *vif;
2967
2968 lvif = VAP_TO_LVIF(vap);
2969 vif = LVIF_TO_VIF(lvif);
2970 ic = vap->iv_ic;
2971 lhw = ic->ic_softc;
2972 hw = LHW_TO_HW(lhw);
2973
2974 LKPI_80211_LHW_LVIF_LOCK(lhw);
2975 TAILQ_REMOVE(&lhw->lvif_head, lvif, lvif_entry);
2976 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
2977
2978 ieee80211_ratectl_deinit(vap);
2979 ieee80211_vap_detach(vap);
2980
2981 IMPROVE("clear up other bits in this state");
2982
2983 lkpi_80211_mo_remove_interface(hw, vif);
2984
2985 /* Single VAP, so we can do this here. */
2986 lkpi_80211_mo_stop(hw);
2987
2988 mtx_destroy(&lvif->mtx);
2989 free(lvif, M_80211_VAP);
2990 }
2991
2992 static void
lkpi_ic_update_mcast(struct ieee80211com * ic)2993 lkpi_ic_update_mcast(struct ieee80211com *ic)
2994 {
2995
2996 lkpi_update_mcast_filter(ic, false);
2997 TRACEOK();
2998 }
2999
3000 static void
lkpi_ic_update_promisc(struct ieee80211com * ic)3001 lkpi_ic_update_promisc(struct ieee80211com *ic)
3002 {
3003
3004 UNIMPLEMENTED;
3005 }
3006
3007 static void
lkpi_ic_update_chw(struct ieee80211com * ic)3008 lkpi_ic_update_chw(struct ieee80211com *ic)
3009 {
3010
3011 UNIMPLEMENTED;
3012 }
3013
3014 /* Start / stop device. */
3015 static void
lkpi_ic_parent(struct ieee80211com * ic)3016 lkpi_ic_parent(struct ieee80211com *ic)
3017 {
3018 struct lkpi_hw *lhw;
3019 #ifdef HW_START_STOP
3020 struct ieee80211_hw *hw;
3021 int error;
3022 #endif
3023 bool start_all;
3024
3025 IMPROVE();
3026
3027 lhw = ic->ic_softc;
3028 #ifdef HW_START_STOP
3029 hw = LHW_TO_HW(lhw);
3030 #endif
3031 start_all = false;
3032
3033 /* IEEE80211_UNLOCK(ic); */
3034 LKPI_80211_LHW_LOCK(lhw);
3035 if (ic->ic_nrunning > 0) {
3036 #ifdef HW_START_STOP
3037 error = lkpi_80211_mo_start(hw);
3038 if (error == 0)
3039 #endif
3040 start_all = true;
3041 } else {
3042 #ifdef HW_START_STOP
3043 lkpi_80211_mo_stop(hw);
3044 #endif
3045 }
3046 LKPI_80211_LHW_UNLOCK(lhw);
3047 /* IEEE80211_LOCK(ic); */
3048
3049 if (start_all)
3050 ieee80211_start_all(ic);
3051 }
3052
3053 bool
linuxkpi_ieee80211_is_ie_id_in_ie_buf(const u8 ie,const u8 * ie_ids,size_t ie_ids_len)3054 linuxkpi_ieee80211_is_ie_id_in_ie_buf(const u8 ie, const u8 *ie_ids,
3055 size_t ie_ids_len)
3056 {
3057 int i;
3058
3059 for (i = 0; i < ie_ids_len; i++) {
3060 if (ie == *ie_ids)
3061 return (true);
3062 }
3063
3064 return (false);
3065 }
3066
3067 /* Return true if skipped; false if error. */
3068 bool
linuxkpi_ieee80211_ie_advance(size_t * xp,const u8 * ies,size_t ies_len)3069 linuxkpi_ieee80211_ie_advance(size_t *xp, const u8 *ies, size_t ies_len)
3070 {
3071 size_t x;
3072 uint8_t l;
3073
3074 x = *xp;
3075
3076 KASSERT(x < ies_len, ("%s: x %zu ies_len %zu ies %p\n",
3077 __func__, x, ies_len, ies));
3078 l = ies[x + 1];
3079 x += 2 + l;
3080
3081 if (x > ies_len)
3082 return (false);
3083
3084 *xp = x;
3085 return (true);
3086 }
3087
3088 static uint8_t *
lkpi_scan_ies_add(uint8_t * p,struct ieee80211_scan_ies * scan_ies,uint32_t band_mask,struct ieee80211vap * vap,struct ieee80211_hw * hw)3089 lkpi_scan_ies_add(uint8_t *p, struct ieee80211_scan_ies *scan_ies,
3090 uint32_t band_mask, struct ieee80211vap *vap, struct ieee80211_hw *hw)
3091 {
3092 struct ieee80211_supported_band *supband;
3093 struct linuxkpi_ieee80211_channel *channels;
3094 struct ieee80211com *ic;
3095 const struct ieee80211_channel *chan;
3096 const struct ieee80211_rateset *rs;
3097 uint8_t *pb;
3098 int band, i;
3099
3100 ic = vap->iv_ic;
3101 for (band = 0; band < NUM_NL80211_BANDS; band++) {
3102 if ((band_mask & (1 << band)) == 0)
3103 continue;
3104
3105 supband = hw->wiphy->bands[band];
3106 /*
3107 * This should not happen;
3108 * band_mask is a bitmask of valid bands to scan on.
3109 */
3110 if (supband == NULL || supband->n_channels == 0)
3111 continue;
3112
3113 /* Find a first channel to get the mode and rates from. */
3114 channels = supband->channels;
3115 chan = NULL;
3116 for (i = 0; i < supband->n_channels; i++) {
3117
3118 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
3119 continue;
3120
3121 chan = ieee80211_find_channel(ic,
3122 channels[i].center_freq, 0);
3123 if (chan != NULL)
3124 break;
3125 }
3126
3127 /* This really should not happen. */
3128 if (chan == NULL)
3129 continue;
3130
3131 pb = p;
3132 rs = ieee80211_get_suprates(ic, chan); /* calls chan2mode */
3133 p = ieee80211_add_rates(p, rs);
3134 p = ieee80211_add_xrates(p, rs);
3135
3136 #if defined(LKPI_80211_HT)
3137 if ((vap->iv_flags_ht & IEEE80211_FHT_HT) != 0) {
3138 struct ieee80211_channel *c;
3139
3140 c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan,
3141 vap->iv_flags_ht);
3142 p = ieee80211_add_htcap_ch(p, vap, c);
3143 }
3144 #endif
3145 #if defined(LKPI_80211_VHT)
3146 if ((vap->iv_vht_flags & IEEE80211_FVHT_VHT) != 0) {
3147 struct ieee80211_channel *c;
3148
3149 c = ieee80211_ht_adjust_channel(ic, ic->ic_curchan,
3150 vap->iv_flags_ht);
3151 c = ieee80211_vht_adjust_channel(ic, c,
3152 vap->iv_vht_flags);
3153 p = ieee80211_add_vhtcap_ch(p, vap, c);
3154 }
3155 #endif
3156
3157 scan_ies->ies[band] = pb;
3158 scan_ies->len[band] = p - pb;
3159 }
3160
3161 /* Add common_ies */
3162 pb = p;
3163 if ((vap->iv_flags & IEEE80211_F_WPA1) != 0 &&
3164 vap->iv_wpa_ie != NULL) {
3165 memcpy(p, vap->iv_wpa_ie, 2 + vap->iv_wpa_ie[1]);
3166 p += 2 + vap->iv_wpa_ie[1];
3167 }
3168 if (vap->iv_appie_probereq != NULL) {
3169 memcpy(p, vap->iv_appie_probereq->ie_data,
3170 vap->iv_appie_probereq->ie_len);
3171 p += vap->iv_appie_probereq->ie_len;
3172 }
3173 scan_ies->common_ies = pb;
3174 scan_ies->common_ie_len = p - pb;
3175
3176 return (p);
3177 }
3178
3179 static void
lkpi_ic_scan_start(struct ieee80211com * ic)3180 lkpi_ic_scan_start(struct ieee80211com *ic)
3181 {
3182 struct lkpi_hw *lhw;
3183 struct ieee80211_hw *hw;
3184 struct lkpi_vif *lvif;
3185 struct ieee80211_vif *vif;
3186 struct ieee80211_scan_state *ss;
3187 struct ieee80211vap *vap;
3188 int error;
3189 bool is_hw_scan;
3190
3191 lhw = ic->ic_softc;
3192 LKPI_80211_LHW_SCAN_LOCK(lhw);
3193 if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0) {
3194 /* A scan is still running. */
3195 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
3196 return;
3197 }
3198 is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0;
3199 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
3200
3201 ss = ic->ic_scan;
3202 vap = ss->ss_vap;
3203 if (vap->iv_state != IEEE80211_S_SCAN) {
3204 IMPROVE("We need to be able to scan if not in S_SCAN");
3205 return;
3206 }
3207
3208 hw = LHW_TO_HW(lhw);
3209 if (!is_hw_scan) {
3210 /* If hw_scan is cleared clear FEXT_SCAN_OFFLOAD too. */
3211 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCAN_OFFLOAD;
3212 sw_scan:
3213 lvif = VAP_TO_LVIF(vap);
3214 vif = LVIF_TO_VIF(lvif);
3215
3216 if (vap->iv_state == IEEE80211_S_SCAN)
3217 lkpi_hw_conf_idle(hw, false);
3218
3219 lkpi_80211_mo_sw_scan_start(hw, vif, vif->addr);
3220 /* net80211::scan_start() handled PS for us. */
3221 IMPROVE();
3222 /* XXX Also means it is too late to flush queues?
3223 * need to check iv_sta_ps or overload? */
3224 /* XXX want to adjust ss end time/ maxdwell? */
3225
3226 } else {
3227 struct ieee80211_channel *c;
3228 struct ieee80211_scan_request *hw_req;
3229 struct linuxkpi_ieee80211_channel *lc, **cpp;
3230 struct cfg80211_ssid *ssids;
3231 struct cfg80211_scan_6ghz_params *s6gp;
3232 size_t chan_len, nchan, ssids_len, s6ghzlen;
3233 int band, i, ssid_count, common_ie_len;
3234 uint32_t band_mask;
3235 uint8_t *ie, *ieend;
3236 bool running;
3237
3238 ssid_count = min(ss->ss_nssid, hw->wiphy->max_scan_ssids);
3239 ssids_len = ssid_count * sizeof(*ssids);
3240 s6ghzlen = 0 * (sizeof(*s6gp)); /* XXX-BZ */
3241
3242 band_mask = 0;
3243 nchan = 0;
3244 for (i = ss->ss_next; i < ss->ss_last; i++) {
3245 nchan++;
3246 band = lkpi_net80211_chan_to_nl80211_band(
3247 ss->ss_chans[ss->ss_next + i]);
3248 band_mask |= (1 << band);
3249 }
3250
3251 if (!ieee80211_hw_check(hw, SINGLE_SCAN_ON_ALL_BANDS)) {
3252 IMPROVE("individual band scans not yet supported, only scanning first band");
3253 /* In theory net80211 should drive this. */
3254 /* Probably we need to add local logic for now;
3255 * need to deal with scan_complete
3256 * and cancel_scan and keep local state.
3257 * Also cut the nchan down above.
3258 */
3259 /* XXX-BZ ath10k does not set this but still does it? &$%^ */
3260 }
3261
3262 chan_len = nchan * (sizeof(lc) + sizeof(*lc));
3263
3264 common_ie_len = 0;
3265 if ((vap->iv_flags & IEEE80211_F_WPA1) != 0 &&
3266 vap->iv_wpa_ie != NULL)
3267 common_ie_len += vap->iv_wpa_ie[1];
3268 if (vap->iv_appie_probereq != NULL)
3269 common_ie_len += vap->iv_appie_probereq->ie_len;
3270
3271 /* We would love to check this at an earlier stage... */
3272 if (common_ie_len > hw->wiphy->max_scan_ie_len) {
3273 ic_printf(ic, "WARNING: %s: common_ie_len %d > "
3274 "wiphy->max_scan_ie_len %d\n", __func__,
3275 common_ie_len, hw->wiphy->max_scan_ie_len);
3276 }
3277
3278 hw_req = malloc(sizeof(*hw_req) + ssids_len +
3279 s6ghzlen + chan_len + lhw->supbands * lhw->scan_ie_len +
3280 common_ie_len, M_LKPI80211, M_WAITOK | M_ZERO);
3281
3282 hw_req->req.flags = 0; /* XXX ??? */
3283 /* hw_req->req.wdev */
3284 hw_req->req.wiphy = hw->wiphy;
3285 hw_req->req.no_cck = false; /* XXX */
3286 #if 0
3287 /* This seems to pessimise default scanning behaviour. */
3288 hw_req->req.duration_mandatory = TICKS_2_USEC(ss->ss_mindwell);
3289 hw_req->req.duration = TICKS_2_USEC(ss->ss_maxdwell);
3290 #endif
3291 #ifdef __notyet__
3292 hw_req->req.flags |= NL80211_SCAN_FLAG_RANDOM_ADDR;
3293 memcpy(hw_req->req.mac_addr, xxx, IEEE80211_ADDR_LEN);
3294 memset(hw_req->req.mac_addr_mask, 0xxx, IEEE80211_ADDR_LEN);
3295 #endif
3296 eth_broadcast_addr(hw_req->req.bssid);
3297
3298 hw_req->req.n_channels = nchan;
3299 cpp = (struct linuxkpi_ieee80211_channel **)(hw_req + 1);
3300 lc = (struct linuxkpi_ieee80211_channel *)(cpp + nchan);
3301 for (i = 0; i < nchan; i++) {
3302 *(cpp + i) =
3303 (struct linuxkpi_ieee80211_channel *)(lc + i);
3304 }
3305 for (i = 0; i < nchan; i++) {
3306 c = ss->ss_chans[ss->ss_next + i];
3307
3308 lc->hw_value = c->ic_ieee;
3309 lc->center_freq = c->ic_freq; /* XXX */
3310 /* lc->flags */
3311 lc->band = lkpi_net80211_chan_to_nl80211_band(c);
3312 lc->max_power = c->ic_maxpower;
3313 /* lc-> ... */
3314 lc++;
3315 }
3316
3317 hw_req->req.n_ssids = ssid_count;
3318 if (hw_req->req.n_ssids > 0) {
3319 ssids = (struct cfg80211_ssid *)lc;
3320 hw_req->req.ssids = ssids;
3321 for (i = 0; i < ssid_count; i++) {
3322 ssids->ssid_len = ss->ss_ssid[i].len;
3323 memcpy(ssids->ssid, ss->ss_ssid[i].ssid,
3324 ss->ss_ssid[i].len);
3325 ssids++;
3326 }
3327 s6gp = (struct cfg80211_scan_6ghz_params *)ssids;
3328 } else {
3329 s6gp = (struct cfg80211_scan_6ghz_params *)lc;
3330 }
3331
3332 /* 6GHz one day. */
3333 hw_req->req.n_6ghz_params = 0;
3334 hw_req->req.scan_6ghz_params = NULL;
3335 hw_req->req.scan_6ghz = false; /* Weird boolean; not what you think. */
3336 /* s6gp->... */
3337
3338 ie = ieend = (uint8_t *)s6gp;
3339 /* Copy per-band IEs, copy common IEs */
3340 ieend = lkpi_scan_ies_add(ie, &hw_req->ies, band_mask, vap, hw);
3341 hw_req->req.ie = ie;
3342 hw_req->req.ie_len = ieend - ie;
3343
3344 lvif = VAP_TO_LVIF(vap);
3345 vif = LVIF_TO_VIF(lvif);
3346
3347 LKPI_80211_LHW_SCAN_LOCK(lhw);
3348 /* Re-check under lock. */
3349 running = (lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0;
3350 if (!running) {
3351 KASSERT(lhw->hw_req == NULL, ("%s: ic %p lhw %p hw_req %p "
3352 "!= NULL\n", __func__, ic, lhw, lhw->hw_req));
3353
3354 lhw->scan_flags |= LKPI_LHW_SCAN_RUNNING;
3355 lhw->hw_req = hw_req;
3356 }
3357 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
3358 if (running) {
3359 free(hw_req, M_LKPI80211);
3360 return;
3361 }
3362
3363 error = lkpi_80211_mo_hw_scan(hw, vif, hw_req);
3364 if (error != 0) {
3365 ieee80211_cancel_scan(vap);
3366
3367 /*
3368 * ieee80211_scan_completed must be called in either
3369 * case of error or none. So let the free happen there
3370 * and only there.
3371 * That would be fine in theory but in practice drivers
3372 * behave differently:
3373 * ath10k does not return hw_scan until after scan_complete
3374 * and can then still return an error.
3375 * rtw88 can return 1 or -EBUSY without scan_complete
3376 * iwlwifi can return various errors before scan starts
3377 * ...
3378 * So we cannot rely on that behaviour and have to check
3379 * and balance between both code paths.
3380 */
3381 LKPI_80211_LHW_SCAN_LOCK(lhw);
3382 if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) != 0) {
3383 free(lhw->hw_req, M_LKPI80211);
3384 lhw->hw_req = NULL;
3385 lhw->scan_flags &= ~LKPI_LHW_SCAN_RUNNING;
3386 }
3387 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
3388
3389 /*
3390 * XXX-SIGH magic number.
3391 * rtw88 has a magic "return 1" if offloading scan is
3392 * not possible. Fall back to sw scan in that case.
3393 */
3394 if (error == 1) {
3395 LKPI_80211_LHW_SCAN_LOCK(lhw);
3396 lhw->scan_flags &= ~LKPI_LHW_SCAN_HW;
3397 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
3398 /*
3399 * XXX If we clear this now and later a driver
3400 * thinks it * can do a hw_scan again, we will
3401 * currently not re-enable it?
3402 */
3403 vap->iv_flags_ext &= ~IEEE80211_FEXT_SCAN_OFFLOAD;
3404 ieee80211_start_scan(vap,
3405 IEEE80211_SCAN_ACTIVE |
3406 IEEE80211_SCAN_NOPICK |
3407 IEEE80211_SCAN_ONCE,
3408 IEEE80211_SCAN_FOREVER,
3409 ss->ss_mindwell ? ss->ss_mindwell : msecs_to_ticks(20),
3410 ss->ss_maxdwell ? ss->ss_maxdwell : msecs_to_ticks(200),
3411 vap->iv_des_nssid, vap->iv_des_ssid);
3412 goto sw_scan;
3413 }
3414
3415 ic_printf(ic, "ERROR: %s: hw_scan returned %d\n",
3416 __func__, error);
3417 }
3418 }
3419 }
3420
3421 static void
lkpi_ic_scan_end(struct ieee80211com * ic)3422 lkpi_ic_scan_end(struct ieee80211com *ic)
3423 {
3424 struct lkpi_hw *lhw;
3425 bool is_hw_scan;
3426
3427 lhw = ic->ic_softc;
3428 LKPI_80211_LHW_SCAN_LOCK(lhw);
3429 if ((lhw->scan_flags & LKPI_LHW_SCAN_RUNNING) == 0) {
3430 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
3431 return;
3432 }
3433 is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0;
3434 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
3435
3436 if (!is_hw_scan) {
3437 struct ieee80211_scan_state *ss;
3438 struct ieee80211vap *vap;
3439 struct ieee80211_hw *hw;
3440 struct lkpi_vif *lvif;
3441 struct ieee80211_vif *vif;
3442
3443 ss = ic->ic_scan;
3444 vap = ss->ss_vap;
3445 hw = LHW_TO_HW(lhw);
3446 lvif = VAP_TO_LVIF(vap);
3447 vif = LVIF_TO_VIF(lvif);
3448
3449 lkpi_80211_mo_sw_scan_complete(hw, vif);
3450
3451 /* Send PS to stop buffering if n80211 does not for us? */
3452
3453 if (vap->iv_state == IEEE80211_S_SCAN)
3454 lkpi_hw_conf_idle(hw, true);
3455 }
3456 }
3457
3458 static void
lkpi_ic_scan_curchan(struct ieee80211_scan_state * ss,unsigned long maxdwell)3459 lkpi_ic_scan_curchan(struct ieee80211_scan_state *ss,
3460 unsigned long maxdwell)
3461 {
3462 struct lkpi_hw *lhw;
3463 bool is_hw_scan;
3464
3465 lhw = ss->ss_ic->ic_softc;
3466 LKPI_80211_LHW_SCAN_LOCK(lhw);
3467 is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0;
3468 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
3469 if (!is_hw_scan)
3470 lhw->ic_scan_curchan(ss, maxdwell);
3471 }
3472
3473 static void
lkpi_ic_scan_mindwell(struct ieee80211_scan_state * ss)3474 lkpi_ic_scan_mindwell(struct ieee80211_scan_state *ss)
3475 {
3476 struct lkpi_hw *lhw;
3477 bool is_hw_scan;
3478
3479 lhw = ss->ss_ic->ic_softc;
3480 LKPI_80211_LHW_SCAN_LOCK(lhw);
3481 is_hw_scan = (lhw->scan_flags & LKPI_LHW_SCAN_HW) != 0;
3482 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
3483 if (!is_hw_scan)
3484 lhw->ic_scan_mindwell(ss);
3485 }
3486
3487 static void
lkpi_ic_set_channel(struct ieee80211com * ic)3488 lkpi_ic_set_channel(struct ieee80211com *ic)
3489 {
3490 struct lkpi_hw *lhw;
3491 struct ieee80211_hw *hw;
3492 struct ieee80211_channel *c;
3493 struct linuxkpi_ieee80211_channel *chan;
3494 int error;
3495 bool hw_scan_running;
3496
3497 lhw = ic->ic_softc;
3498
3499 /* If we do not support (*config)() save us the work. */
3500 if (lhw->ops->config == NULL)
3501 return;
3502
3503 /* If we have a hw_scan running do not switch channels. */
3504 LKPI_80211_LHW_SCAN_LOCK(lhw);
3505 hw_scan_running =
3506 (lhw->scan_flags & (LKPI_LHW_SCAN_RUNNING|LKPI_LHW_SCAN_HW)) ==
3507 (LKPI_LHW_SCAN_RUNNING|LKPI_LHW_SCAN_HW);
3508 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
3509 if (hw_scan_running)
3510 return;
3511
3512 c = ic->ic_curchan;
3513 if (c == NULL || c == IEEE80211_CHAN_ANYC) {
3514 ic_printf(ic, "%s: c %p ops->config %p\n", __func__,
3515 c, lhw->ops->config);
3516 return;
3517 }
3518
3519 chan = lkpi_find_lkpi80211_chan(lhw, c);
3520 if (chan == NULL) {
3521 ic_printf(ic, "%s: c %p chan %p\n", __func__,
3522 c, chan);
3523 return;
3524 }
3525
3526 /* XXX max power for scanning? */
3527 IMPROVE();
3528
3529 hw = LHW_TO_HW(lhw);
3530 cfg80211_chandef_create(&hw->conf.chandef, chan,
3531 #ifdef LKPI_80211_HT
3532 (ic->ic_htcaps & IEEE80211_HTC_HT) ? 0 :
3533 #endif
3534 NL80211_CHAN_NO_HT);
3535
3536 error = lkpi_80211_mo_config(hw, IEEE80211_CONF_CHANGE_CHANNEL);
3537 if (error != 0 && error != EOPNOTSUPP) {
3538 ic_printf(ic, "ERROR: %s: config %#0x returned %d\n",
3539 __func__, IEEE80211_CONF_CHANGE_CHANNEL, error);
3540 /* XXX should we unroll to the previous chandef? */
3541 IMPROVE();
3542 } else {
3543 /* Update radiotap channels as well. */
3544 lhw->rtap_tx.wt_chan_freq = htole16(c->ic_freq);
3545 lhw->rtap_tx.wt_chan_flags = htole16(c->ic_flags);
3546 lhw->rtap_rx.wr_chan_freq = htole16(c->ic_freq);
3547 lhw->rtap_rx.wr_chan_flags = htole16(c->ic_flags);
3548 }
3549
3550 /* Currently PS is hard coded off! Not sure it belongs here. */
3551 IMPROVE();
3552 if (ieee80211_hw_check(hw, SUPPORTS_PS) &&
3553 (hw->conf.flags & IEEE80211_CONF_PS) != 0) {
3554 hw->conf.flags &= ~IEEE80211_CONF_PS;
3555 error = lkpi_80211_mo_config(hw, IEEE80211_CONF_CHANGE_PS);
3556 if (error != 0 && error != EOPNOTSUPP)
3557 ic_printf(ic, "ERROR: %s: config %#0x returned "
3558 "%d\n", __func__, IEEE80211_CONF_CHANGE_PS,
3559 error);
3560 }
3561 }
3562
3563 static struct ieee80211_node *
lkpi_ic_node_alloc(struct ieee80211vap * vap,const uint8_t mac[IEEE80211_ADDR_LEN])3564 lkpi_ic_node_alloc(struct ieee80211vap *vap,
3565 const uint8_t mac[IEEE80211_ADDR_LEN])
3566 {
3567 struct ieee80211com *ic;
3568 struct lkpi_hw *lhw;
3569 struct ieee80211_node *ni;
3570 struct ieee80211_hw *hw;
3571 struct lkpi_sta *lsta;
3572
3573 ic = vap->iv_ic;
3574 lhw = ic->ic_softc;
3575
3576 /* We keep allocations de-coupled so we can deal with the two worlds. */
3577 if (lhw->ic_node_alloc == NULL)
3578 return (NULL);
3579
3580 ni = lhw->ic_node_alloc(vap, mac);
3581 if (ni == NULL)
3582 return (NULL);
3583
3584 hw = LHW_TO_HW(lhw);
3585 lsta = lkpi_lsta_alloc(vap, mac, hw, ni);
3586 if (lsta == NULL) {
3587 if (lhw->ic_node_free != NULL)
3588 lhw->ic_node_free(ni);
3589 return (NULL);
3590 }
3591
3592 return (ni);
3593 }
3594
3595 static int
lkpi_ic_node_init(struct ieee80211_node * ni)3596 lkpi_ic_node_init(struct ieee80211_node *ni)
3597 {
3598 struct ieee80211com *ic;
3599 struct lkpi_hw *lhw;
3600 int error;
3601
3602 ic = ni->ni_ic;
3603 lhw = ic->ic_softc;
3604
3605 if (lhw->ic_node_init != NULL) {
3606 error = lhw->ic_node_init(ni);
3607 if (error != 0)
3608 return (error);
3609 }
3610
3611 /* XXX-BZ Sync other state over. */
3612 IMPROVE();
3613
3614 return (0);
3615 }
3616
3617 static void
lkpi_ic_node_cleanup(struct ieee80211_node * ni)3618 lkpi_ic_node_cleanup(struct ieee80211_node *ni)
3619 {
3620 struct ieee80211com *ic;
3621 struct lkpi_hw *lhw;
3622
3623 ic = ni->ni_ic;
3624 lhw = ic->ic_softc;
3625
3626 /* XXX-BZ remove from driver, ... */
3627 IMPROVE();
3628
3629 if (lhw->ic_node_cleanup != NULL)
3630 lhw->ic_node_cleanup(ni);
3631 }
3632
3633 static void
lkpi_ic_node_free(struct ieee80211_node * ni)3634 lkpi_ic_node_free(struct ieee80211_node *ni)
3635 {
3636 struct ieee80211com *ic;
3637 struct lkpi_hw *lhw;
3638 struct lkpi_sta *lsta;
3639
3640 ic = ni->ni_ic;
3641 lhw = ic->ic_softc;
3642 lsta = ni->ni_drv_data;
3643
3644 /* KASSERT lsta is not NULL here. Print ni/ni__refcnt. */
3645
3646 /*
3647 * Pass in the original ni just in case of error we could check that
3648 * it is the same as lsta->ni.
3649 */
3650 lkpi_lsta_free(lsta, ni);
3651
3652 if (lhw->ic_node_free != NULL)
3653 lhw->ic_node_free(ni);
3654 }
3655
3656 static int
lkpi_ic_raw_xmit(struct ieee80211_node * ni,struct mbuf * m,const struct ieee80211_bpf_params * params __unused)3657 lkpi_ic_raw_xmit(struct ieee80211_node *ni, struct mbuf *m,
3658 const struct ieee80211_bpf_params *params __unused)
3659 {
3660 struct lkpi_sta *lsta;
3661
3662 lsta = ni->ni_drv_data;
3663 LKPI_80211_LSTA_TXQ_LOCK(lsta);
3664 if (!lsta->added_to_drv || !lsta->txq_ready) {
3665 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
3666 /*
3667 * Free the mbuf (do NOT release ni ref for the m_pkthdr.rcvif!
3668 * ieee80211_raw_output() does that in case of error).
3669 */
3670 m_free(m);
3671 return (ENETDOWN);
3672 }
3673
3674 /* Queue the packet and enqueue the task to handle it. */
3675 mbufq_enqueue(&lsta->txq, m);
3676 taskqueue_enqueue(taskqueue_thread, &lsta->txq_task);
3677 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
3678
3679 #ifdef LINUXKPI_DEBUG_80211
3680 if (linuxkpi_debug_80211 & D80211_TRACE_TX)
3681 printf("%s:%d lsta %p ni %p %6D mbuf_qlen %d\n",
3682 __func__, __LINE__, lsta, ni, ni->ni_macaddr, ":",
3683 mbufq_len(&lsta->txq));
3684 #endif
3685
3686 return (0);
3687 }
3688
3689 static void
lkpi_80211_txq_tx_one(struct lkpi_sta * lsta,struct mbuf * m)3690 lkpi_80211_txq_tx_one(struct lkpi_sta *lsta, struct mbuf *m)
3691 {
3692 struct ieee80211_node *ni;
3693 #ifndef LKPI_80211_HW_CRYPTO
3694 struct ieee80211_frame *wh;
3695 #endif
3696 struct ieee80211_key *k;
3697 struct sk_buff *skb;
3698 struct ieee80211com *ic;
3699 struct lkpi_hw *lhw;
3700 struct ieee80211_hw *hw;
3701 struct lkpi_vif *lvif;
3702 struct ieee80211_vif *vif;
3703 struct ieee80211_channel *c;
3704 struct ieee80211_tx_control control;
3705 struct ieee80211_tx_info *info;
3706 struct ieee80211_sta *sta;
3707 struct ieee80211_hdr *hdr;
3708 struct lkpi_txq *ltxq;
3709 void *buf;
3710 uint8_t ac, tid;
3711
3712 M_ASSERTPKTHDR(m);
3713 #ifdef LINUXKPI_DEBUG_80211
3714 if (linuxkpi_debug_80211 & D80211_TRACE_TX_DUMP)
3715 hexdump(mtod(m, const void *), m->m_len, "RAW TX (plain) ", 0);
3716 #endif
3717
3718 ni = lsta->ni;
3719 k = NULL;
3720 #ifndef LKPI_80211_HW_CRYPTO
3721 /* Encrypt the frame if need be; XXX-BZ info->control.hw_key. */
3722 wh = mtod(m, struct ieee80211_frame *);
3723 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) {
3724 /* Retrieve key for TX && do software encryption. */
3725 k = ieee80211_crypto_encap(ni, m);
3726 if (k == NULL) {
3727 ieee80211_free_node(ni);
3728 m_freem(m);
3729 return;
3730 }
3731 }
3732 #endif
3733
3734 ic = ni->ni_ic;
3735 lhw = ic->ic_softc;
3736 hw = LHW_TO_HW(lhw);
3737 c = ni->ni_chan;
3738
3739 if (ieee80211_radiotap_active_vap(ni->ni_vap)) {
3740 struct lkpi_radiotap_tx_hdr *rtap;
3741
3742 rtap = &lhw->rtap_tx;
3743 rtap->wt_flags = 0;
3744 if (k != NULL)
3745 rtap->wt_flags |= IEEE80211_RADIOTAP_F_WEP;
3746 if (m->m_flags & M_FRAG)
3747 rtap->wt_flags |= IEEE80211_RADIOTAP_F_FRAG;
3748 IMPROVE();
3749 rtap->wt_rate = 0;
3750 if (c != NULL && c != IEEE80211_CHAN_ANYC) {
3751 rtap->wt_chan_freq = htole16(c->ic_freq);
3752 rtap->wt_chan_flags = htole16(c->ic_flags);
3753 }
3754
3755 ieee80211_radiotap_tx(ni->ni_vap, m);
3756 }
3757
3758 /*
3759 * net80211 should handle hw->extra_tx_headroom.
3760 * Though for as long as we are copying we don't mind.
3761 * XXX-BZ rtw88 asks for too much headroom for ipv6+tcp:
3762 * https://lists.freebsd.org/archives/freebsd-transport/2022-February/000012.html
3763 */
3764 skb = dev_alloc_skb(hw->extra_tx_headroom + m->m_pkthdr.len);
3765 if (skb == NULL) {
3766 ic_printf(ic, "ERROR %s: skb alloc failed\n", __func__);
3767 ieee80211_free_node(ni);
3768 m_freem(m);
3769 return;
3770 }
3771 skb_reserve(skb, hw->extra_tx_headroom);
3772
3773 /* XXX-BZ we need a SKB version understanding mbuf. */
3774 /* Save the mbuf for ieee80211_tx_complete(). */
3775 skb->m_free_func = lkpi_ieee80211_free_skb_mbuf;
3776 skb->m = m;
3777 #if 0
3778 skb_put_data(skb, m->m_data, m->m_pkthdr.len);
3779 #else
3780 buf = skb_put(skb, m->m_pkthdr.len);
3781 m_copydata(m, 0, m->m_pkthdr.len, buf);
3782 #endif
3783 /* Save the ni. */
3784 m->m_pkthdr.PH_loc.ptr = ni;
3785
3786 lvif = VAP_TO_LVIF(ni->ni_vap);
3787 vif = LVIF_TO_VIF(lvif);
3788
3789 hdr = (void *)skb->data;
3790 tid = linuxkpi_ieee80211_get_tid(hdr, true);
3791 if (tid == IEEE80211_NONQOS_TID) { /* == IEEE80211_NUM_TIDS */
3792 if (!ieee80211_is_data(hdr->frame_control)) {
3793 /* MGMT and CTRL frames go on TID 7/VO. */
3794 skb->priority = 7;
3795 ac = IEEE80211_AC_VO;
3796 } else {
3797 /* Other non-QOS traffic goes to BE. */
3798 /* Contrary to net80211 we MUST NOT promote M_EAPOL. */
3799 skb->priority = 0;
3800 ac = IEEE80211_AC_BE;
3801 }
3802 } else {
3803 skb->priority = tid & IEEE80211_QOS_CTL_TID_MASK;
3804 ac = ieee80211e_up_to_ac[tid & 7];
3805 }
3806 skb_set_queue_mapping(skb, ac);
3807
3808 info = IEEE80211_SKB_CB(skb);
3809 info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
3810 /* Slight delay; probably only happens on scanning so fine? */
3811 if (c == NULL || c == IEEE80211_CHAN_ANYC)
3812 c = ic->ic_curchan;
3813 info->band = lkpi_net80211_chan_to_nl80211_band(c);
3814 info->hw_queue = vif->hw_queue[ac];
3815 if (m->m_flags & M_EAPOL)
3816 info->control.flags |= IEEE80211_TX_CTRL_PORT_CTRL_PROTO;
3817 info->control.vif = vif;
3818 /* XXX-BZ info->control.rates */
3819 #ifdef __notyet__
3820 #ifdef LKPI_80211_HT
3821 info->control.rts_cts_rate_idx=
3822 info->control.use_rts= /* RTS */
3823 info->control.use_cts_prot= /* RTS/CTS*/
3824 #endif
3825 #endif
3826
3827 sta = LSTA_TO_STA(lsta);
3828 #ifdef LKPI_80211_HW_CRYPTO
3829 info->control.hw_key = lsta->kc;
3830 #endif
3831
3832 IMPROVE();
3833
3834 ltxq = NULL;
3835 if (!ieee80211_is_data_present(hdr->frame_control)) {
3836 if (vif->type == NL80211_IFTYPE_STATION &&
3837 lsta->added_to_drv &&
3838 sta->txq[IEEE80211_NUM_TIDS] != NULL)
3839 ltxq = TXQ_TO_LTXQ(sta->txq[IEEE80211_NUM_TIDS]);
3840 } else if (lsta->added_to_drv &&
3841 sta->txq[skb->priority] != NULL) {
3842 ltxq = TXQ_TO_LTXQ(sta->txq[skb->priority]);
3843 }
3844 if (ltxq == NULL)
3845 goto ops_tx;
3846
3847 KASSERT(ltxq != NULL, ("%s: lsta %p sta %p m %p skb %p "
3848 "ltxq %p != NULL\n", __func__, lsta, sta, m, skb, ltxq));
3849
3850 LKPI_80211_LTXQ_LOCK(ltxq);
3851 skb_queue_tail(<xq->skbq, skb);
3852 #ifdef LINUXKPI_DEBUG_80211
3853 if (linuxkpi_debug_80211 & D80211_TRACE_TX)
3854 printf("%s:%d mo_wake_tx_queue :: %d %u lsta %p sta %p "
3855 "ni %p %6D skb %p lxtq %p { qlen %u, ac %d tid %u } "
3856 "WAKE_TX_Q ac %d prio %u qmap %u\n",
3857 __func__, __LINE__,
3858 curthread->td_tid, (unsigned int)ticks,
3859 lsta, sta, ni, ni->ni_macaddr, ":", skb, ltxq,
3860 skb_queue_len(<xq->skbq), ltxq->txq.ac,
3861 ltxq->txq.tid, ac, skb->priority, skb->qmap);
3862 #endif
3863 LKPI_80211_LTXQ_UNLOCK(ltxq);
3864 LKPI_80211_LHW_LOCK(lhw);
3865 lkpi_80211_mo_wake_tx_queue(hw, <xq->txq);
3866 LKPI_80211_LHW_UNLOCK(lhw);
3867 return;
3868
3869 ops_tx:
3870 #ifdef LINUXKPI_DEBUG_80211
3871 if (linuxkpi_debug_80211 & D80211_TRACE_TX)
3872 printf("%s:%d mo_tx :: lsta %p sta %p ni %p %6D skb %p "
3873 "TX ac %d prio %u qmap %u\n",
3874 __func__, __LINE__, lsta, sta, ni, ni->ni_macaddr, ":",
3875 skb, ac, skb->priority, skb->qmap);
3876 #endif
3877 memset(&control, 0, sizeof(control));
3878 control.sta = sta;
3879 LKPI_80211_LHW_LOCK(lhw);
3880 lkpi_80211_mo_tx(hw, &control, skb);
3881 LKPI_80211_LHW_UNLOCK(lhw);
3882 }
3883
3884 static void
lkpi_80211_txq_task(void * ctx,int pending)3885 lkpi_80211_txq_task(void *ctx, int pending)
3886 {
3887 struct lkpi_sta *lsta;
3888 struct mbufq mq;
3889 struct mbuf *m;
3890 bool shall_tx;
3891
3892 lsta = ctx;
3893
3894 #ifdef LINUXKPI_DEBUG_80211
3895 if (linuxkpi_debug_80211 & D80211_TRACE_TX)
3896 printf("%s:%d lsta %p ni %p %6D pending %d mbuf_qlen %d\n",
3897 __func__, __LINE__, lsta, lsta->ni, lsta->ni->ni_macaddr, ":",
3898 pending, mbufq_len(&lsta->txq));
3899 #endif
3900
3901 mbufq_init(&mq, IFQ_MAXLEN);
3902
3903 LKPI_80211_LSTA_TXQ_LOCK(lsta);
3904 /*
3905 * Do not re-check lsta->txq_ready here; we may have a pending
3906 * disassoc/deauth frame still. On the contrary if txq_ready is
3907 * false we do not have a valid sta anymore in the firmware so no
3908 * point to try to TX.
3909 * We also use txq_ready as a semaphore and will drain the txq manually
3910 * if needed on our way towards SCAN/INIT in the state machine.
3911 */
3912 shall_tx = lsta->added_to_drv && lsta->txq_ready;
3913 if (__predict_true(shall_tx))
3914 mbufq_concat(&mq, &lsta->txq);
3915 /*
3916 * else a state change will push the packets out manually or
3917 * lkpi_lsta_free() will drain the lsta->txq and free the mbufs.
3918 */
3919 LKPI_80211_LSTA_TXQ_UNLOCK(lsta);
3920
3921 m = mbufq_dequeue(&mq);
3922 while (m != NULL) {
3923 lkpi_80211_txq_tx_one(lsta, m);
3924 m = mbufq_dequeue(&mq);
3925 }
3926 }
3927
3928 static int
lkpi_ic_transmit(struct ieee80211com * ic,struct mbuf * m)3929 lkpi_ic_transmit(struct ieee80211com *ic, struct mbuf *m)
3930 {
3931
3932 /* XXX TODO */
3933 IMPROVE();
3934
3935 /* Quick and dirty cheating hack. */
3936 struct ieee80211_node *ni;
3937
3938 ni = (struct ieee80211_node *)m->m_pkthdr.rcvif;
3939 return (lkpi_ic_raw_xmit(ni, m, NULL));
3940 }
3941
3942 #ifdef LKPI_80211_HT
3943 static int
lkpi_ic_recv_action(struct ieee80211_node * ni,const struct ieee80211_frame * wh,const uint8_t * frm,const uint8_t * efrm)3944 lkpi_ic_recv_action(struct ieee80211_node *ni, const struct ieee80211_frame *wh,
3945 const uint8_t *frm, const uint8_t *efrm)
3946 {
3947 struct ieee80211com *ic;
3948 struct lkpi_hw *lhw;
3949
3950 ic = ni->ni_ic;
3951 lhw = ic->ic_softc;
3952
3953 IMPROVE_HT();
3954
3955 return (lhw->ic_recv_action(ni, wh, frm, efrm));
3956 }
3957
3958 static int
lkpi_ic_send_action(struct ieee80211_node * ni,int category,int action,void * sa)3959 lkpi_ic_send_action(struct ieee80211_node *ni, int category, int action, void *sa)
3960 {
3961 struct ieee80211com *ic;
3962 struct lkpi_hw *lhw;
3963
3964 ic = ni->ni_ic;
3965 lhw = ic->ic_softc;
3966
3967 IMPROVE_HT();
3968
3969 return (lhw->ic_send_action(ni, category, action, sa));
3970 }
3971
3972
3973 static int
lkpi_ic_ampdu_enable(struct ieee80211_node * ni,struct ieee80211_tx_ampdu * tap)3974 lkpi_ic_ampdu_enable(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
3975 {
3976 struct ieee80211com *ic;
3977 struct lkpi_hw *lhw;
3978
3979 ic = ni->ni_ic;
3980 lhw = ic->ic_softc;
3981
3982 IMPROVE_HT();
3983
3984 return (lhw->ic_ampdu_enable(ni, tap));
3985 }
3986
3987 static int
lkpi_ic_addba_request(struct ieee80211_node * ni,struct ieee80211_tx_ampdu * tap,int dialogtoken,int baparamset,int batimeout)3988 lkpi_ic_addba_request(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
3989 int dialogtoken, int baparamset, int batimeout)
3990 {
3991 struct ieee80211com *ic;
3992 struct lkpi_hw *lhw;
3993
3994 ic = ni->ni_ic;
3995 lhw = ic->ic_softc;
3996
3997 IMPROVE_HT();
3998
3999 return (lhw->ic_addba_request(ni, tap, dialogtoken, baparamset, batimeout));
4000 }
4001
4002 static int
lkpi_ic_addba_response(struct ieee80211_node * ni,struct ieee80211_tx_ampdu * tap,int status,int baparamset,int batimeout)4003 lkpi_ic_addba_response(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
4004 int status, int baparamset, int batimeout)
4005 {
4006 struct ieee80211com *ic;
4007 struct lkpi_hw *lhw;
4008
4009 ic = ni->ni_ic;
4010 lhw = ic->ic_softc;
4011
4012 IMPROVE_HT();
4013
4014 return (lhw->ic_addba_response(ni, tap, status, baparamset, batimeout));
4015 }
4016
4017 static void
lkpi_ic_addba_stop(struct ieee80211_node * ni,struct ieee80211_tx_ampdu * tap)4018 lkpi_ic_addba_stop(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
4019 {
4020 struct ieee80211com *ic;
4021 struct lkpi_hw *lhw;
4022
4023 ic = ni->ni_ic;
4024 lhw = ic->ic_softc;
4025
4026 IMPROVE_HT();
4027
4028 lhw->ic_addba_stop(ni, tap);
4029 }
4030
4031 static void
lkpi_ic_addba_response_timeout(struct ieee80211_node * ni,struct ieee80211_tx_ampdu * tap)4032 lkpi_ic_addba_response_timeout(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap)
4033 {
4034 struct ieee80211com *ic;
4035 struct lkpi_hw *lhw;
4036
4037 ic = ni->ni_ic;
4038 lhw = ic->ic_softc;
4039
4040 IMPROVE_HT();
4041
4042 lhw->ic_addba_response_timeout(ni, tap);
4043 }
4044
4045 static void
lkpi_ic_bar_response(struct ieee80211_node * ni,struct ieee80211_tx_ampdu * tap,int status)4046 lkpi_ic_bar_response(struct ieee80211_node *ni, struct ieee80211_tx_ampdu *tap,
4047 int status)
4048 {
4049 struct ieee80211com *ic;
4050 struct lkpi_hw *lhw;
4051
4052 ic = ni->ni_ic;
4053 lhw = ic->ic_softc;
4054
4055 IMPROVE_HT();
4056
4057 lhw->ic_bar_response(ni, tap, status);
4058 }
4059
4060 static int
lkpi_ic_ampdu_rx_start(struct ieee80211_node * ni,struct ieee80211_rx_ampdu * rap,int baparamset,int batimeout,int baseqctl)4061 lkpi_ic_ampdu_rx_start(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap,
4062 int baparamset, int batimeout, int baseqctl)
4063 {
4064 struct ieee80211com *ic;
4065 struct lkpi_hw *lhw;
4066 struct ieee80211_hw *hw;
4067 struct ieee80211vap *vap;
4068 struct lkpi_vif *lvif;
4069 struct ieee80211_vif *vif;
4070 struct lkpi_sta *lsta;
4071 struct ieee80211_sta *sta;
4072 struct ieee80211_ampdu_params params;
4073 int error;
4074
4075 ic = ni->ni_ic;
4076 lhw = ic->ic_softc;
4077 hw = LHW_TO_HW(lhw);
4078 vap = ni->ni_vap;
4079 lvif = VAP_TO_LVIF(vap);
4080 vif = LVIF_TO_VIF(lvif);
4081 lsta = ni->ni_drv_data;
4082 sta = LSTA_TO_STA(lsta);
4083
4084 params.sta = sta;
4085 params.action = IEEE80211_AMPDU_RX_START;
4086 params.buf_size = _IEEE80211_MASKSHIFT(le16toh(baparamset), IEEE80211_BAPS_BUFSIZ);
4087 if (params.buf_size == 0)
4088 params.buf_size = IEEE80211_MAX_AMPDU_BUF_HT;
4089 else
4090 params.buf_size = min(params.buf_size, IEEE80211_MAX_AMPDU_BUF_HT);
4091 if (params.buf_size > hw->max_rx_aggregation_subframes)
4092 params.buf_size = hw->max_rx_aggregation_subframes;
4093 params.timeout = le16toh(batimeout);
4094 params.ssn = _IEEE80211_MASKSHIFT(le16toh(baseqctl), IEEE80211_BASEQ_START);
4095 params.tid = _IEEE80211_MASKSHIFT(le16toh(baparamset), IEEE80211_BAPS_TID);
4096 params.amsdu = false;
4097
4098 IMPROVE_HT("Do we need to distinguish based on SUPPORTS_REORDERING_BUFFER?");
4099
4100 /* This may call kalloc. Make sure we can sleep. */
4101 error = lkpi_80211_mo_ampdu_action(hw, vif, ¶ms);
4102 if (error != 0) {
4103 ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p rap %p\n",
4104 __func__, error, ni, rap);
4105 return (error);
4106 }
4107 IMPROVE_HT("net80211 is missing the error check on return and assumes success");
4108
4109 error = lhw->ic_ampdu_rx_start(ni, rap, baparamset, batimeout, baseqctl);
4110 return (error);
4111 }
4112
4113 static void
lkpi_ic_ampdu_rx_stop(struct ieee80211_node * ni,struct ieee80211_rx_ampdu * rap)4114 lkpi_ic_ampdu_rx_stop(struct ieee80211_node *ni, struct ieee80211_rx_ampdu *rap)
4115 {
4116 struct ieee80211com *ic;
4117 struct lkpi_hw *lhw;
4118 struct ieee80211_hw *hw;
4119 struct ieee80211vap *vap;
4120 struct lkpi_vif *lvif;
4121 struct ieee80211_vif *vif;
4122 struct lkpi_sta *lsta;
4123 struct ieee80211_sta *sta;
4124 struct ieee80211_ampdu_params params;
4125 int error;
4126 uint8_t tid;
4127
4128 ic = ni->ni_ic;
4129 lhw = ic->ic_softc;
4130
4131 /*
4132 * We should not (cannot) call into mac80211 ops with AMPDU_RX_STOP if
4133 * we did not START. Some drivers pass it down to firmware which will
4134 * simply barf and net80211 calls ieee80211_ht_node_cleanup() from
4135 * ieee80211_ht_node_init() amongst others which will iterate over all
4136 * tid and call ic_ampdu_rx_stop() unconditionally.
4137 * XXX net80211 should probably be more "gentle" in these cases and
4138 * track some state itself.
4139 */
4140 if ((rap->rxa_flags & IEEE80211_AGGR_RUNNING) == 0)
4141 goto net80211_only;
4142
4143 hw = LHW_TO_HW(lhw);
4144 vap = ni->ni_vap;
4145 lvif = VAP_TO_LVIF(vap);
4146 vif = LVIF_TO_VIF(lvif);
4147 lsta = ni->ni_drv_data;
4148 sta = LSTA_TO_STA(lsta);
4149
4150 IMPROVE_HT("This really should be passed from ht_recv_action_ba_delba.");
4151 for (tid = 0; tid < WME_NUM_TID; tid++) {
4152 if (&ni->ni_rx_ampdu[tid] == rap)
4153 break;
4154 }
4155
4156 params.sta = sta;
4157 params.action = IEEE80211_AMPDU_RX_STOP;
4158 params.buf_size = 0;
4159 params.timeout = 0;
4160 params.ssn = 0;
4161 params.tid = tid;
4162 params.amsdu = false;
4163
4164 error = lkpi_80211_mo_ampdu_action(hw, vif, ¶ms);
4165 if (error != 0)
4166 ic_printf(ic, "%s: mo_ampdu_action returned %d. ni %p rap %p\n",
4167 __func__, error, ni, rap);
4168
4169 net80211_only:
4170 lhw->ic_ampdu_rx_stop(ni, rap);
4171 }
4172 #endif
4173
4174 static void
lkpi_ic_getradiocaps_ht(struct ieee80211com * ic,struct ieee80211_hw * hw,uint8_t * bands,int * chan_flags,enum nl80211_band band)4175 lkpi_ic_getradiocaps_ht(struct ieee80211com *ic, struct ieee80211_hw *hw,
4176 uint8_t *bands, int *chan_flags, enum nl80211_band band)
4177 {
4178 #ifdef LKPI_80211_HT
4179 struct ieee80211_sta_ht_cap *ht_cap;
4180
4181 ht_cap = &hw->wiphy->bands[band]->ht_cap;
4182 if (!ht_cap->ht_supported)
4183 return;
4184
4185 switch (band) {
4186 case NL80211_BAND_2GHZ:
4187 setbit(bands, IEEE80211_MODE_11NG);
4188 break;
4189 case NL80211_BAND_5GHZ:
4190 setbit(bands, IEEE80211_MODE_11NA);
4191 break;
4192 default:
4193 IMPROVE("Unsupported band %d", band);
4194 return;
4195 }
4196
4197 ic->ic_htcaps = IEEE80211_HTC_HT; /* HT operation */
4198
4199 /*
4200 * Rather than manually checking each flag and
4201 * translating IEEE80211_HT_CAP_ to IEEE80211_HTCAP_,
4202 * simply copy the 16bits.
4203 */
4204 ic->ic_htcaps |= ht_cap->cap;
4205
4206 /* Then deal with the other flags. */
4207 if (ieee80211_hw_check(hw, AMPDU_AGGREGATION))
4208 ic->ic_htcaps |= IEEE80211_HTC_AMPDU;
4209 #ifdef __notyet__
4210 if (ieee80211_hw_check(hw, TX_AMSDU))
4211 ic->ic_htcaps |= IEEE80211_HTC_AMSDU;
4212 if (ieee80211_hw_check(hw, SUPPORTS_AMSDU_IN_AMPDU))
4213 ic->ic_htcaps |= (IEEE80211_HTC_RX_AMSDU_AMPDU |
4214 IEEE80211_HTC_TX_AMSDU_AMPDU);
4215 #endif
4216
4217 IMPROVE("PS, ampdu_*, ht_cap.mcs.tx_params, ...");
4218 ic->ic_htcaps |= IEEE80211_HTCAP_SMPS_OFF;
4219
4220 /* Only add HT40 channels if supported. */
4221 if ((ic->ic_htcaps & IEEE80211_HTCAP_CHWIDTH40) != 0 &&
4222 chan_flags != NULL)
4223 *chan_flags |= NET80211_CBW_FLAG_HT40;
4224 #endif
4225 }
4226
4227 static void
lkpi_ic_getradiocaps(struct ieee80211com * ic,int maxchan,int * n,struct ieee80211_channel * c)4228 lkpi_ic_getradiocaps(struct ieee80211com *ic, int maxchan,
4229 int *n, struct ieee80211_channel *c)
4230 {
4231 struct lkpi_hw *lhw;
4232 struct ieee80211_hw *hw;
4233 struct linuxkpi_ieee80211_channel *channels;
4234 uint8_t bands[IEEE80211_MODE_BYTES];
4235 int chan_flags, error, i, nchans;
4236
4237 /* Channels */
4238 lhw = ic->ic_softc;
4239 hw = LHW_TO_HW(lhw);
4240
4241 /* NL80211_BAND_2GHZ */
4242 nchans = 0;
4243 if (hw->wiphy->bands[NL80211_BAND_2GHZ] != NULL)
4244 nchans = hw->wiphy->bands[NL80211_BAND_2GHZ]->n_channels;
4245 if (nchans > 0) {
4246 memset(bands, 0, sizeof(bands));
4247 chan_flags = 0;
4248 setbit(bands, IEEE80211_MODE_11B);
4249 /* XXX-BZ unclear how to check for 11g. */
4250
4251 IMPROVE("the bitrates may have flags?");
4252 setbit(bands, IEEE80211_MODE_11G);
4253
4254 lkpi_ic_getradiocaps_ht(ic, hw, bands, &chan_flags,
4255 NL80211_BAND_2GHZ);
4256
4257 channels = hw->wiphy->bands[NL80211_BAND_2GHZ]->channels;
4258 for (i = 0; i < nchans && *n < maxchan; i++) {
4259 uint32_t nflags = 0;
4260 int cflags = chan_flags;
4261
4262 if (channels[i].flags & IEEE80211_CHAN_DISABLED) {
4263 ic_printf(ic, "%s: Skipping disabled chan "
4264 "[%u/%u/%#x]\n", __func__,
4265 channels[i].hw_value,
4266 channels[i].center_freq, channels[i].flags);
4267 continue;
4268 }
4269 if (channels[i].flags & IEEE80211_CHAN_NO_IR)
4270 nflags |= (IEEE80211_CHAN_NOADHOC|IEEE80211_CHAN_PASSIVE);
4271 if (channels[i].flags & IEEE80211_CHAN_RADAR)
4272 nflags |= IEEE80211_CHAN_DFS;
4273 if (channels[i].flags & IEEE80211_CHAN_NO_160MHZ)
4274 cflags &= ~(NET80211_CBW_FLAG_VHT160|NET80211_CBW_FLAG_VHT80P80);
4275 if (channels[i].flags & IEEE80211_CHAN_NO_80MHZ)
4276 cflags &= ~NET80211_CBW_FLAG_VHT80;
4277 /* XXX how to map the remaining enum ieee80211_channel_flags? */
4278 if (channels[i].flags & IEEE80211_CHAN_NO_HT40)
4279 cflags &= ~NET80211_CBW_FLAG_HT40;
4280
4281 error = ieee80211_add_channel_cbw(c, maxchan, n,
4282 channels[i].hw_value, channels[i].center_freq,
4283 channels[i].max_power,
4284 nflags, bands, cflags);
4285 /* net80211::ENOBUFS: *n >= maxchans */
4286 if (error != 0 && error != ENOBUFS)
4287 ic_printf(ic, "%s: Adding chan %u/%u/%#x/%#x/%#x/%#x "
4288 "returned error %d\n",
4289 __func__, channels[i].hw_value,
4290 channels[i].center_freq, channels[i].flags,
4291 nflags, chan_flags, cflags, error);
4292 if (error != 0)
4293 break;
4294 }
4295 }
4296
4297 /* NL80211_BAND_5GHZ */
4298 nchans = 0;
4299 if (hw->wiphy->bands[NL80211_BAND_5GHZ] != NULL)
4300 nchans = hw->wiphy->bands[NL80211_BAND_5GHZ]->n_channels;
4301 if (nchans > 0) {
4302 memset(bands, 0, sizeof(bands));
4303 chan_flags = 0;
4304 setbit(bands, IEEE80211_MODE_11A);
4305
4306 lkpi_ic_getradiocaps_ht(ic, hw, bands, &chan_flags,
4307 NL80211_BAND_5GHZ);
4308
4309 #ifdef LKPI_80211_VHT
4310 if (hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.vht_supported){
4311
4312 ic->ic_flags_ext |= IEEE80211_FEXT_VHT;
4313 ic->ic_vht_cap.vht_cap_info =
4314 hw->wiphy->bands[NL80211_BAND_5GHZ]->vht_cap.cap;
4315
4316 setbit(bands, IEEE80211_MODE_VHT_5GHZ);
4317 chan_flags |= NET80211_CBW_FLAG_VHT80;
4318 if (IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_IS_160MHZ(
4319 ic->ic_vht_cap.vht_cap_info))
4320 chan_flags |= NET80211_CBW_FLAG_VHT160;
4321 if (IEEE80211_VHTCAP_SUPP_CHAN_WIDTH_IS_160_80P80MHZ(
4322 ic->ic_vht_cap.vht_cap_info))
4323 chan_flags |= NET80211_CBW_FLAG_VHT80P80;
4324 }
4325 #endif
4326
4327 channels = hw->wiphy->bands[NL80211_BAND_5GHZ]->channels;
4328 for (i = 0; i < nchans && *n < maxchan; i++) {
4329 uint32_t nflags = 0;
4330 int cflags = chan_flags;
4331
4332 if (channels[i].flags & IEEE80211_CHAN_DISABLED) {
4333 ic_printf(ic, "%s: Skipping disabled chan "
4334 "[%u/%u/%#x]\n", __func__,
4335 channels[i].hw_value,
4336 channels[i].center_freq, channels[i].flags);
4337 continue;
4338 }
4339 if (channels[i].flags & IEEE80211_CHAN_NO_IR)
4340 nflags |= (IEEE80211_CHAN_NOADHOC|IEEE80211_CHAN_PASSIVE);
4341 if (channels[i].flags & IEEE80211_CHAN_RADAR)
4342 nflags |= IEEE80211_CHAN_DFS;
4343 if (channels[i].flags & IEEE80211_CHAN_NO_160MHZ)
4344 cflags &= ~(NET80211_CBW_FLAG_VHT160|NET80211_CBW_FLAG_VHT80P80);
4345 if (channels[i].flags & IEEE80211_CHAN_NO_80MHZ)
4346 cflags &= ~NET80211_CBW_FLAG_VHT80;
4347 /* XXX hwo to map the remaining enum ieee80211_channel_flags? */
4348 if (channels[i].flags & IEEE80211_CHAN_NO_HT40)
4349 cflags &= ~NET80211_CBW_FLAG_HT40;
4350
4351 error = ieee80211_add_channel_cbw(c, maxchan, n,
4352 channels[i].hw_value, channels[i].center_freq,
4353 channels[i].max_power,
4354 nflags, bands, cflags);
4355 /* net80211::ENOBUFS: *n >= maxchans */
4356 if (error != 0 && error != ENOBUFS)
4357 ic_printf(ic, "%s: Adding chan %u/%u/%#x/%#x/%#x/%#x "
4358 "returned error %d\n",
4359 __func__, channels[i].hw_value,
4360 channels[i].center_freq, channels[i].flags,
4361 nflags, chan_flags, cflags, error);
4362 if (error != 0)
4363 break;
4364 }
4365 }
4366 }
4367
4368 static void *
lkpi_ieee80211_ifalloc(void)4369 lkpi_ieee80211_ifalloc(void)
4370 {
4371 struct ieee80211com *ic;
4372
4373 ic = malloc(sizeof(*ic), M_LKPI80211, M_WAITOK | M_ZERO);
4374 if (ic == NULL)
4375 return (NULL);
4376
4377 /* Setting these happens later when we have device information. */
4378 ic->ic_softc = NULL;
4379 ic->ic_name = "linuxkpi";
4380
4381 return (ic);
4382 }
4383
4384 struct ieee80211_hw *
linuxkpi_ieee80211_alloc_hw(size_t priv_len,const struct ieee80211_ops * ops)4385 linuxkpi_ieee80211_alloc_hw(size_t priv_len, const struct ieee80211_ops *ops)
4386 {
4387 struct ieee80211_hw *hw;
4388 struct lkpi_hw *lhw;
4389 struct wiphy *wiphy;
4390 int ac;
4391
4392 /* Get us and the driver data also allocated. */
4393 wiphy = wiphy_new(&linuxkpi_mac80211cfgops, sizeof(*lhw) + priv_len);
4394 if (wiphy == NULL)
4395 return (NULL);
4396
4397 lhw = wiphy_priv(wiphy);
4398 lhw->ops = ops;
4399
4400 LKPI_80211_LHW_LOCK_INIT(lhw);
4401 LKPI_80211_LHW_SCAN_LOCK_INIT(lhw);
4402 LKPI_80211_LHW_TXQ_LOCK_INIT(lhw);
4403 sx_init_flags(&lhw->lvif_sx, "lhw-lvif", SX_RECURSE | SX_DUPOK);
4404 TAILQ_INIT(&lhw->lvif_head);
4405 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
4406 lhw->txq_generation[ac] = 1;
4407 TAILQ_INIT(&lhw->scheduled_txqs[ac]);
4408 }
4409
4410 /* Deferred RX path. */
4411 LKPI_80211_LHW_RXQ_LOCK_INIT(lhw);
4412 TASK_INIT(&lhw->rxq_task, 0, lkpi_80211_lhw_rxq_task, lhw);
4413 mbufq_init(&lhw->rxq, IFQ_MAXLEN);
4414 lhw->rxq_stopped = false;
4415
4416 /*
4417 * XXX-BZ TODO make sure there is a "_null" function to all ops
4418 * not initialized.
4419 */
4420 hw = LHW_TO_HW(lhw);
4421 hw->wiphy = wiphy;
4422 hw->conf.flags |= IEEE80211_CONF_IDLE;
4423 hw->priv = (void *)(lhw + 1);
4424
4425 /* BSD Specific. */
4426 lhw->ic = lkpi_ieee80211_ifalloc();
4427 if (lhw->ic == NULL) {
4428 ieee80211_free_hw(hw);
4429 return (NULL);
4430 }
4431
4432 IMPROVE();
4433
4434 return (hw);
4435 }
4436
4437 void
linuxkpi_ieee80211_iffree(struct ieee80211_hw * hw)4438 linuxkpi_ieee80211_iffree(struct ieee80211_hw *hw)
4439 {
4440 struct lkpi_hw *lhw;
4441 struct mbuf *m;
4442
4443 lhw = HW_TO_LHW(hw);
4444 free(lhw->ic, M_LKPI80211);
4445 lhw->ic = NULL;
4446
4447 /*
4448 * Drain the deferred RX path.
4449 */
4450 LKPI_80211_LHW_RXQ_LOCK(lhw);
4451 lhw->rxq_stopped = true;
4452 LKPI_80211_LHW_RXQ_UNLOCK(lhw);
4453
4454 /* Drain taskq, won't be restarted due to rxq_stopped being set. */
4455 while (taskqueue_cancel(taskqueue_thread, &lhw->rxq_task, NULL) != 0)
4456 taskqueue_drain(taskqueue_thread, &lhw->rxq_task);
4457
4458 /* Flush mbufq (make sure to release ni refs!). */
4459 m = mbufq_dequeue(&lhw->rxq);
4460 while (m != NULL) {
4461 struct m_tag *mtag;
4462
4463 mtag = m_tag_locate(m, MTAG_ABI_LKPI80211, LKPI80211_TAG_RXNI, NULL);
4464 if (mtag != NULL) {
4465 struct lkpi_80211_tag_rxni *rxni;
4466
4467 rxni = (struct lkpi_80211_tag_rxni *)(mtag + 1);
4468 ieee80211_free_node(rxni->ni);
4469 }
4470 m_freem(m);
4471 m = mbufq_dequeue(&lhw->rxq);
4472 }
4473 KASSERT(mbufq_empty(&lhw->rxq), ("%s: lhw %p has rxq len %d != 0\n",
4474 __func__, lhw, mbufq_len(&lhw->rxq)));
4475 LKPI_80211_LHW_RXQ_LOCK_DESTROY(lhw);
4476
4477 /* Cleanup more of lhw here or in wiphy_free()? */
4478 LKPI_80211_LHW_TXQ_LOCK_DESTROY(lhw);
4479 LKPI_80211_LHW_SCAN_LOCK_DESTROY(lhw);
4480 LKPI_80211_LHW_LOCK_DESTROY(lhw);
4481 sx_destroy(&lhw->lvif_sx);
4482 IMPROVE();
4483 }
4484
4485 void
linuxkpi_set_ieee80211_dev(struct ieee80211_hw * hw,char * name)4486 linuxkpi_set_ieee80211_dev(struct ieee80211_hw *hw, char *name)
4487 {
4488 struct lkpi_hw *lhw;
4489 struct ieee80211com *ic;
4490
4491 lhw = HW_TO_LHW(hw);
4492 ic = lhw->ic;
4493
4494 /* Now set a proper name before ieee80211_ifattach(). */
4495 ic->ic_softc = lhw;
4496 ic->ic_name = name;
4497
4498 /* XXX-BZ do we also need to set wiphy name? */
4499 }
4500
4501 struct ieee80211_hw *
linuxkpi_wiphy_to_ieee80211_hw(struct wiphy * wiphy)4502 linuxkpi_wiphy_to_ieee80211_hw(struct wiphy *wiphy)
4503 {
4504 struct lkpi_hw *lhw;
4505
4506 lhw = wiphy_priv(wiphy);
4507 return (LHW_TO_HW(lhw));
4508 }
4509
4510 static void
lkpi_radiotap_attach(struct lkpi_hw * lhw)4511 lkpi_radiotap_attach(struct lkpi_hw *lhw)
4512 {
4513 struct ieee80211com *ic;
4514
4515 ic = lhw->ic;
4516 ieee80211_radiotap_attach(ic,
4517 &lhw->rtap_tx.wt_ihdr, sizeof(lhw->rtap_tx),
4518 LKPI_RTAP_TX_FLAGS_PRESENT,
4519 &lhw->rtap_rx.wr_ihdr, sizeof(lhw->rtap_rx),
4520 LKPI_RTAP_RX_FLAGS_PRESENT);
4521 }
4522
4523 int
linuxkpi_ieee80211_ifattach(struct ieee80211_hw * hw)4524 linuxkpi_ieee80211_ifattach(struct ieee80211_hw *hw)
4525 {
4526 struct ieee80211com *ic;
4527 struct lkpi_hw *lhw;
4528 int band, i;
4529
4530 lhw = HW_TO_LHW(hw);
4531 ic = lhw->ic;
4532
4533 /* We do it this late as wiphy->dev should be set for the name. */
4534 lhw->workq = alloc_ordered_workqueue(wiphy_name(hw->wiphy), 0);
4535 if (lhw->workq == NULL)
4536 return (-EAGAIN);
4537
4538 /* XXX-BZ figure this out how they count his... */
4539 if (!is_zero_ether_addr(hw->wiphy->perm_addr)) {
4540 IEEE80211_ADDR_COPY(ic->ic_macaddr,
4541 hw->wiphy->perm_addr);
4542 } else if (hw->wiphy->n_addresses > 0) {
4543 /* We take the first one. */
4544 IEEE80211_ADDR_COPY(ic->ic_macaddr,
4545 hw->wiphy->addresses[0].addr);
4546 } else {
4547 ic_printf(ic, "%s: warning, no hardware address!\n", __func__);
4548 }
4549
4550 #ifdef __not_yet__
4551 /* See comment in lkpi_80211_txq_tx_one(). */
4552 ic->ic_headroom = hw->extra_tx_headroom;
4553 #endif
4554
4555 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */
4556 ic->ic_opmode = IEEE80211_M_STA;
4557
4558 /* Set device capabilities. */
4559 /* XXX-BZ we need to get these from linux80211/drivers and convert. */
4560 ic->ic_caps =
4561 IEEE80211_C_STA |
4562 IEEE80211_C_MONITOR |
4563 IEEE80211_C_WPA | /* WPA/RSN */
4564 #ifdef LKPI_80211_WME
4565 IEEE80211_C_WME |
4566 #endif
4567 #if 0
4568 IEEE80211_C_PMGT |
4569 #endif
4570 IEEE80211_C_SHSLOT | /* short slot time supported */
4571 IEEE80211_C_SHPREAMBLE /* short preamble supported */
4572 ;
4573 #if 0
4574 /* Scanning is a different kind of beast to re-work. */
4575 ic->ic_caps |= IEEE80211_C_BGSCAN;
4576 #endif
4577 if (lhw->ops->hw_scan) {
4578 /*
4579 * Advertise full-offload scanning.
4580 *
4581 * Not limiting to SINGLE_SCAN_ON_ALL_BANDS here as otherwise
4582 * we essentially disable hw_scan for all drivers not setting
4583 * the flag.
4584 */
4585 ic->ic_flags_ext |= IEEE80211_FEXT_SCAN_OFFLOAD;
4586 lhw->scan_flags |= LKPI_LHW_SCAN_HW;
4587 }
4588
4589 /*
4590 * The wiphy variables report bitmasks of avail antennas.
4591 * (*get_antenna) get the current bitmask sets which can be
4592 * altered by (*set_antenna) for some drivers.
4593 * XXX-BZ will the count alone do us much good long-term in net80211?
4594 */
4595 if (hw->wiphy->available_antennas_rx ||
4596 hw->wiphy->available_antennas_tx) {
4597 uint32_t rxs, txs;
4598
4599 if (lkpi_80211_mo_get_antenna(hw, &txs, &rxs) == 0) {
4600 ic->ic_rxstream = bitcount32(rxs);
4601 ic->ic_txstream = bitcount32(txs);
4602 }
4603 }
4604
4605 ic->ic_cryptocaps = 0;
4606 #ifdef LKPI_80211_HW_CRYPTO
4607 if (hw->wiphy->n_cipher_suites > 0) {
4608 for (i = 0; i < hw->wiphy->n_cipher_suites; i++)
4609 ic->ic_cryptocaps |= lkpi_l80211_to_net80211_cyphers(
4610 hw->wiphy->cipher_suites[i]);
4611 }
4612 #endif
4613
4614 lkpi_ic_getradiocaps(ic, IEEE80211_CHAN_MAX, &ic->ic_nchans,
4615 ic->ic_channels);
4616
4617 ieee80211_ifattach(ic);
4618
4619 ic->ic_update_mcast = lkpi_ic_update_mcast;
4620 ic->ic_update_promisc = lkpi_ic_update_promisc;
4621 ic->ic_update_chw = lkpi_ic_update_chw;
4622 ic->ic_parent = lkpi_ic_parent;
4623 ic->ic_scan_start = lkpi_ic_scan_start;
4624 ic->ic_scan_end = lkpi_ic_scan_end;
4625 ic->ic_set_channel = lkpi_ic_set_channel;
4626 ic->ic_transmit = lkpi_ic_transmit;
4627 ic->ic_raw_xmit = lkpi_ic_raw_xmit;
4628 ic->ic_vap_create = lkpi_ic_vap_create;
4629 ic->ic_vap_delete = lkpi_ic_vap_delete;
4630 ic->ic_getradiocaps = lkpi_ic_getradiocaps;
4631 ic->ic_wme.wme_update = lkpi_ic_wme_update;
4632
4633 lhw->ic_scan_curchan = ic->ic_scan_curchan;
4634 ic->ic_scan_curchan = lkpi_ic_scan_curchan;
4635 lhw->ic_scan_mindwell = ic->ic_scan_mindwell;
4636 ic->ic_scan_mindwell = lkpi_ic_scan_mindwell;
4637
4638 lhw->ic_node_alloc = ic->ic_node_alloc;
4639 ic->ic_node_alloc = lkpi_ic_node_alloc;
4640 lhw->ic_node_init = ic->ic_node_init;
4641 ic->ic_node_init = lkpi_ic_node_init;
4642 lhw->ic_node_cleanup = ic->ic_node_cleanup;
4643 ic->ic_node_cleanup = lkpi_ic_node_cleanup;
4644 lhw->ic_node_free = ic->ic_node_free;
4645 ic->ic_node_free = lkpi_ic_node_free;
4646
4647 #ifdef LKPI_80211_HT
4648 lhw->ic_recv_action = ic->ic_recv_action;
4649 ic->ic_recv_action = lkpi_ic_recv_action;
4650 lhw->ic_send_action = ic->ic_send_action;
4651 ic->ic_send_action = lkpi_ic_send_action;
4652
4653 lhw->ic_ampdu_enable = ic->ic_ampdu_enable;
4654 ic->ic_ampdu_enable = lkpi_ic_ampdu_enable;
4655
4656 lhw->ic_addba_request = ic->ic_addba_request;
4657 ic->ic_addba_request = lkpi_ic_addba_request;
4658 lhw->ic_addba_response = ic->ic_addba_response;
4659 ic->ic_addba_response = lkpi_ic_addba_response;
4660 lhw->ic_addba_stop = ic->ic_addba_stop;
4661 ic->ic_addba_stop = lkpi_ic_addba_stop;
4662 lhw->ic_addba_response_timeout = ic->ic_addba_response_timeout;
4663 ic->ic_addba_response_timeout = lkpi_ic_addba_response_timeout;
4664
4665 lhw->ic_bar_response = ic->ic_bar_response;
4666 ic->ic_bar_response = lkpi_ic_bar_response;
4667
4668 lhw->ic_ampdu_rx_start = ic->ic_ampdu_rx_start;
4669 ic->ic_ampdu_rx_start = lkpi_ic_ampdu_rx_start;
4670 lhw->ic_ampdu_rx_stop = ic->ic_ampdu_rx_stop;
4671 ic->ic_ampdu_rx_stop = lkpi_ic_ampdu_rx_stop;
4672 #endif
4673
4674 lkpi_radiotap_attach(lhw);
4675
4676 /*
4677 * Assign the first possible channel for now; seems Realtek drivers
4678 * expect one.
4679 * Also remember the amount of bands we support and the most rates
4680 * in any band so we can scale [(ext) sup rates] IE(s) accordingly.
4681 */
4682 lhw->supbands = lhw->max_rates = 0;
4683 for (band = 0; band < NUM_NL80211_BANDS; band++) {
4684 struct ieee80211_supported_band *supband;
4685 struct linuxkpi_ieee80211_channel *channels;
4686
4687 supband = hw->wiphy->bands[band];
4688 if (supband == NULL || supband->n_channels == 0)
4689 continue;
4690
4691 lhw->supbands++;
4692 lhw->max_rates = max(lhw->max_rates, supband->n_bitrates);
4693
4694 /* If we have a channel, we need to keep counting supbands. */
4695 if (hw->conf.chandef.chan != NULL)
4696 continue;
4697
4698 channels = supband->channels;
4699 for (i = 0; i < supband->n_channels; i++) {
4700
4701 if (channels[i].flags & IEEE80211_CHAN_DISABLED)
4702 continue;
4703
4704 cfg80211_chandef_create(&hw->conf.chandef, &channels[i],
4705 #ifdef LKPI_80211_HT
4706 (ic->ic_htcaps & IEEE80211_HTC_HT) ? 0 :
4707 #endif
4708 NL80211_CHAN_NO_HT);
4709 break;
4710 }
4711 }
4712
4713 IMPROVE("see net80211::ieee80211_chan_init vs. wiphy->bands[].bitrates possibly in lkpi_ic_getradiocaps?");
4714
4715 /* Make sure we do not support more than net80211 is willing to take. */
4716 if (lhw->max_rates > IEEE80211_RATE_MAXSIZE) {
4717 ic_printf(ic, "%s: limiting max_rates %d to %d!\n", __func__,
4718 lhw->max_rates, IEEE80211_RATE_MAXSIZE);
4719 lhw->max_rates = IEEE80211_RATE_MAXSIZE;
4720 }
4721
4722 /*
4723 * The maximum supported bitrates on any band + size for
4724 * DSSS Parameter Set give our per-band IE size.
4725 * SSID is the responsibility of the driver and goes on the side.
4726 * The user specified bits coming from the vap go into the
4727 * "common ies" fields.
4728 */
4729 lhw->scan_ie_len = 2 + IEEE80211_RATE_SIZE;
4730 if (lhw->max_rates > IEEE80211_RATE_SIZE)
4731 lhw->scan_ie_len += 2 + (lhw->max_rates - IEEE80211_RATE_SIZE);
4732
4733 if (hw->wiphy->features & NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) {
4734 /*
4735 * net80211 does not seem to support the DSSS Parameter Set but
4736 * some of the drivers insert it so calculate the extra fixed
4737 * space in.
4738 */
4739 lhw->scan_ie_len += 2 + 1;
4740 }
4741
4742 #if defined(LKPI_80211_HT)
4743 if ((ic->ic_htcaps & IEEE80211_HTC_HT) != 0)
4744 lhw->scan_ie_len += sizeof(struct ieee80211_ie_htcap);
4745 #endif
4746 #if defined(LKPI_80211_VHT)
4747 if ((ic->ic_flags_ext & IEEE80211_FEXT_VHT) != 0)
4748 lhw->scan_ie_len += 2 + sizeof(struct ieee80211_vht_cap);
4749 #endif
4750
4751 /* Reduce the max_scan_ie_len "left" by the amount we consume already. */
4752 if (hw->wiphy->max_scan_ie_len > 0) {
4753 if (lhw->scan_ie_len > hw->wiphy->max_scan_ie_len)
4754 goto err;
4755 hw->wiphy->max_scan_ie_len -= lhw->scan_ie_len;
4756 }
4757
4758 if (bootverbose)
4759 ieee80211_announce(ic);
4760
4761 return (0);
4762 err:
4763 IMPROVE("TODO FIXME CLEANUP");
4764 return (-EAGAIN);
4765 }
4766
4767 void
linuxkpi_ieee80211_ifdetach(struct ieee80211_hw * hw)4768 linuxkpi_ieee80211_ifdetach(struct ieee80211_hw *hw)
4769 {
4770 struct lkpi_hw *lhw;
4771 struct ieee80211com *ic;
4772
4773 lhw = HW_TO_LHW(hw);
4774 ic = lhw->ic;
4775 ieee80211_ifdetach(ic);
4776 }
4777
4778 void
linuxkpi_ieee80211_iterate_interfaces(struct ieee80211_hw * hw,enum ieee80211_iface_iter flags,void (* iterfunc)(void *,uint8_t *,struct ieee80211_vif *),void * arg)4779 linuxkpi_ieee80211_iterate_interfaces(struct ieee80211_hw *hw,
4780 enum ieee80211_iface_iter flags,
4781 void(*iterfunc)(void *, uint8_t *, struct ieee80211_vif *),
4782 void *arg)
4783 {
4784 struct lkpi_hw *lhw;
4785 struct lkpi_vif *lvif;
4786 struct ieee80211_vif *vif;
4787 bool active, atomic, nin_drv;
4788
4789 lhw = HW_TO_LHW(hw);
4790
4791 if (flags & ~(IEEE80211_IFACE_ITER_NORMAL|
4792 IEEE80211_IFACE_ITER_RESUME_ALL|
4793 IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER|
4794 IEEE80211_IFACE_ITER_ACTIVE|IEEE80211_IFACE_ITER__ATOMIC)) {
4795 ic_printf(lhw->ic, "XXX TODO %s flags(%#x) not yet supported.\n",
4796 __func__, flags);
4797 }
4798
4799 active = (flags & IEEE80211_IFACE_ITER_ACTIVE) != 0;
4800 atomic = (flags & IEEE80211_IFACE_ITER__ATOMIC) != 0;
4801 nin_drv = (flags & IEEE80211_IFACE_SKIP_SDATA_NOT_IN_DRIVER) != 0;
4802
4803 if (atomic)
4804 LKPI_80211_LHW_LVIF_LOCK(lhw);
4805 TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
4806 struct ieee80211vap *vap;
4807
4808 vif = LVIF_TO_VIF(lvif);
4809
4810 /*
4811 * If we want "active" interfaces, we need to distinguish on
4812 * whether the driver knows about them or not to be able to
4813 * handle the "resume" case correctly. Skip the ones the
4814 * driver does not know about.
4815 */
4816 if (active && !lvif->added_to_drv &&
4817 (flags & IEEE80211_IFACE_ITER_RESUME_ALL) != 0)
4818 continue;
4819
4820 /*
4821 * If we shall skip interfaces not added to the driver do so
4822 * if we haven't yet.
4823 */
4824 if (nin_drv && !lvif->added_to_drv)
4825 continue;
4826
4827 /*
4828 * Run the iterator function if we are either not asking
4829 * asking for active only or if the VAP is "running".
4830 */
4831 /* XXX-BZ probably should have state in the lvif as well. */
4832 vap = LVIF_TO_VAP(lvif);
4833 if (!active || (vap->iv_state != IEEE80211_S_INIT))
4834 iterfunc(arg, vif->addr, vif);
4835 }
4836 if (atomic)
4837 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
4838 }
4839
4840 void
linuxkpi_ieee80211_iterate_keys(struct ieee80211_hw * hw,struct ieee80211_vif * vif,void (* iterfunc)(struct ieee80211_hw *,struct ieee80211_vif *,struct ieee80211_sta *,struct ieee80211_key_conf *,void *),void * arg)4841 linuxkpi_ieee80211_iterate_keys(struct ieee80211_hw *hw,
4842 struct ieee80211_vif *vif,
4843 void(*iterfunc)(struct ieee80211_hw *, struct ieee80211_vif *,
4844 struct ieee80211_sta *, struct ieee80211_key_conf *, void *),
4845 void *arg)
4846 {
4847
4848 UNIMPLEMENTED;
4849 }
4850
4851 void
linuxkpi_ieee80211_iterate_chan_contexts(struct ieee80211_hw * hw,void (* iterfunc)(struct ieee80211_hw *,struct ieee80211_chanctx_conf *,void *),void * arg)4852 linuxkpi_ieee80211_iterate_chan_contexts(struct ieee80211_hw *hw,
4853 void(*iterfunc)(struct ieee80211_hw *, struct ieee80211_chanctx_conf *,
4854 void *),
4855 void *arg)
4856 {
4857 struct lkpi_hw *lhw;
4858 struct lkpi_vif *lvif;
4859 struct ieee80211_vif *vif;
4860 struct lkpi_chanctx *lchanctx;
4861
4862 KASSERT(hw != NULL && iterfunc != NULL,
4863 ("%s: hw %p iterfunc %p arg %p\n", __func__, hw, iterfunc, arg));
4864
4865 lhw = HW_TO_LHW(hw);
4866
4867 IMPROVE("lchanctx should be its own list somewhere");
4868
4869 LKPI_80211_LHW_LVIF_LOCK(lhw);
4870 TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
4871
4872 vif = LVIF_TO_VIF(lvif);
4873 if (vif->chanctx_conf == NULL)
4874 continue;
4875
4876 lchanctx = CHANCTX_CONF_TO_LCHANCTX(vif->chanctx_conf);
4877 if (!lchanctx->added_to_drv)
4878 continue;
4879
4880 iterfunc(hw, &lchanctx->chanctx_conf, arg);
4881 }
4882 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
4883 }
4884
4885 void
linuxkpi_ieee80211_iterate_stations_atomic(struct ieee80211_hw * hw,void (* iterfunc)(void *,struct ieee80211_sta *),void * arg)4886 linuxkpi_ieee80211_iterate_stations_atomic(struct ieee80211_hw *hw,
4887 void (*iterfunc)(void *, struct ieee80211_sta *), void *arg)
4888 {
4889 struct lkpi_hw *lhw;
4890 struct lkpi_vif *lvif;
4891 struct lkpi_sta *lsta;
4892 struct ieee80211_sta *sta;
4893
4894 KASSERT(hw != NULL && iterfunc != NULL,
4895 ("%s: hw %p iterfunc %p arg %p\n", __func__, hw, iterfunc, arg));
4896
4897 lhw = HW_TO_LHW(hw);
4898
4899 LKPI_80211_LHW_LVIF_LOCK(lhw);
4900 TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
4901
4902 LKPI_80211_LVIF_LOCK(lvif);
4903 TAILQ_FOREACH(lsta, &lvif->lsta_head, lsta_entry) {
4904 if (!lsta->added_to_drv)
4905 continue;
4906 sta = LSTA_TO_STA(lsta);
4907 iterfunc(arg, sta);
4908 }
4909 LKPI_80211_LVIF_UNLOCK(lvif);
4910 }
4911 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
4912 }
4913
4914 struct linuxkpi_ieee80211_regdomain *
lkpi_get_linuxkpi_ieee80211_regdomain(size_t n)4915 lkpi_get_linuxkpi_ieee80211_regdomain(size_t n)
4916 {
4917 struct linuxkpi_ieee80211_regdomain *regd;
4918
4919 regd = kzalloc(sizeof(*regd) + n * sizeof(struct ieee80211_reg_rule),
4920 GFP_KERNEL);
4921 return (regd);
4922 }
4923
4924 int
linuxkpi_regulatory_set_wiphy_regd_sync(struct wiphy * wiphy,struct linuxkpi_ieee80211_regdomain * regd)4925 linuxkpi_regulatory_set_wiphy_regd_sync(struct wiphy *wiphy,
4926 struct linuxkpi_ieee80211_regdomain *regd)
4927 {
4928 struct lkpi_hw *lhw;
4929 struct ieee80211com *ic;
4930 struct ieee80211_regdomain *rd;
4931
4932 lhw = wiphy_priv(wiphy);
4933 ic = lhw->ic;
4934
4935 rd = &ic->ic_regdomain;
4936 if (rd->isocc[0] == '\0') {
4937 rd->isocc[0] = regd->alpha2[0];
4938 rd->isocc[1] = regd->alpha2[1];
4939 }
4940
4941 TODO();
4942 /* XXX-BZ finish the rest. */
4943
4944 return (0);
4945 }
4946
4947 void
linuxkpi_ieee80211_scan_completed(struct ieee80211_hw * hw,struct cfg80211_scan_info * info)4948 linuxkpi_ieee80211_scan_completed(struct ieee80211_hw *hw,
4949 struct cfg80211_scan_info *info)
4950 {
4951 struct lkpi_hw *lhw;
4952 struct ieee80211com *ic;
4953 struct ieee80211_scan_state *ss;
4954
4955 lhw = wiphy_priv(hw->wiphy);
4956 ic = lhw->ic;
4957 ss = ic->ic_scan;
4958
4959 ieee80211_scan_done(ss->ss_vap);
4960
4961 LKPI_80211_LHW_SCAN_LOCK(lhw);
4962 free(lhw->hw_req, M_LKPI80211);
4963 lhw->hw_req = NULL;
4964 lhw->scan_flags &= ~LKPI_LHW_SCAN_RUNNING;
4965 wakeup(lhw);
4966 LKPI_80211_LHW_SCAN_UNLOCK(lhw);
4967
4968 return;
4969 }
4970
4971 static void
lkpi_80211_lhw_rxq_rx_one(struct lkpi_hw * lhw,struct mbuf * m)4972 lkpi_80211_lhw_rxq_rx_one(struct lkpi_hw *lhw, struct mbuf *m)
4973 {
4974 struct ieee80211_node *ni;
4975 struct m_tag *mtag;
4976 int ok;
4977
4978 ni = NULL;
4979 mtag = m_tag_locate(m, MTAG_ABI_LKPI80211, LKPI80211_TAG_RXNI, NULL);
4980 if (mtag != NULL) {
4981 struct lkpi_80211_tag_rxni *rxni;
4982
4983 rxni = (struct lkpi_80211_tag_rxni *)(mtag + 1);
4984 ni = rxni->ni;
4985 }
4986
4987 if (ni != NULL) {
4988 ok = ieee80211_input_mimo(ni, m);
4989 ieee80211_free_node(ni); /* Release the reference. */
4990 if (ok < 0)
4991 m_freem(m);
4992 } else {
4993 ok = ieee80211_input_mimo_all(lhw->ic, m);
4994 /* mbuf got consumed. */
4995 }
4996
4997 #ifdef LINUXKPI_DEBUG_80211
4998 if (linuxkpi_debug_80211 & D80211_TRACE_RX)
4999 printf("TRACE %s: handled frame type %#0x\n", __func__, ok);
5000 #endif
5001 }
5002
5003 static void
lkpi_80211_lhw_rxq_task(void * ctx,int pending)5004 lkpi_80211_lhw_rxq_task(void *ctx, int pending)
5005 {
5006 struct lkpi_hw *lhw;
5007 struct mbufq mq;
5008 struct mbuf *m;
5009
5010 lhw = ctx;
5011
5012 #ifdef LINUXKPI_DEBUG_80211
5013 if (linuxkpi_debug_80211 & D80211_TRACE_RX)
5014 printf("%s:%d lhw %p pending %d mbuf_qlen %d\n",
5015 __func__, __LINE__, lhw, pending, mbufq_len(&lhw->rxq));
5016 #endif
5017
5018 mbufq_init(&mq, IFQ_MAXLEN);
5019
5020 LKPI_80211_LHW_RXQ_LOCK(lhw);
5021 mbufq_concat(&mq, &lhw->rxq);
5022 LKPI_80211_LHW_RXQ_UNLOCK(lhw);
5023
5024 m = mbufq_dequeue(&mq);
5025 while (m != NULL) {
5026 lkpi_80211_lhw_rxq_rx_one(lhw, m);
5027 m = mbufq_dequeue(&mq);
5028 }
5029 }
5030
5031 /* For %list see comment towards the end of the function. */
5032 void
linuxkpi_ieee80211_rx(struct ieee80211_hw * hw,struct sk_buff * skb,struct ieee80211_sta * sta,struct napi_struct * napi __unused,struct list_head * list __unused)5033 linuxkpi_ieee80211_rx(struct ieee80211_hw *hw, struct sk_buff *skb,
5034 struct ieee80211_sta *sta, struct napi_struct *napi __unused,
5035 struct list_head *list __unused)
5036 {
5037 struct lkpi_hw *lhw;
5038 struct ieee80211com *ic;
5039 struct mbuf *m;
5040 struct skb_shared_info *shinfo;
5041 struct ieee80211_rx_status *rx_status;
5042 struct ieee80211_rx_stats rx_stats;
5043 struct ieee80211_node *ni;
5044 struct ieee80211vap *vap;
5045 struct ieee80211_hdr *hdr;
5046 struct lkpi_sta *lsta;
5047 int i, offset, ok;
5048 int8_t rssi;
5049 bool is_beacon;
5050
5051 if (skb->len < 2) {
5052 /* Need 80211 stats here. */
5053 IMPROVE();
5054 goto err;
5055 }
5056
5057 /*
5058 * For now do the data copy; we can later improve things. Might even
5059 * have an mbuf backing the skb data then?
5060 */
5061 m = m_get2(skb->len, M_NOWAIT, MT_DATA, M_PKTHDR);
5062 if (m == NULL)
5063 goto err;
5064 m_copyback(m, 0, skb->tail - skb->data, skb->data);
5065
5066 shinfo = skb_shinfo(skb);
5067 offset = m->m_len;
5068 for (i = 0; i < shinfo->nr_frags; i++) {
5069 m_copyback(m, offset, shinfo->frags[i].size,
5070 (uint8_t *)linux_page_address(shinfo->frags[i].page) +
5071 shinfo->frags[i].offset);
5072 offset += shinfo->frags[i].size;
5073 }
5074
5075 rx_status = IEEE80211_SKB_RXCB(skb);
5076
5077 hdr = (void *)skb->data;
5078 is_beacon = ieee80211_is_beacon(hdr->frame_control);
5079
5080 #ifdef LINUXKPI_DEBUG_80211
5081 if (is_beacon && (linuxkpi_debug_80211 & D80211_TRACE_RX_BEACONS) == 0)
5082 goto no_trace_beacons;
5083
5084 if (linuxkpi_debug_80211 & D80211_TRACE_RX)
5085 printf("TRACE-RX: %s: skb %p a/l/d/t-len (%u/%u/%u/%u) "
5086 "h %p d %p t %p e %p sh %p (%u) m %p plen %u len %u%s\n",
5087 __func__, skb, skb->_alloc_len, skb->len, skb->data_len,
5088 skb->truesize, skb->head, skb->data, skb->tail, skb->end,
5089 shinfo, shinfo->nr_frags,
5090 m, m->m_pkthdr.len, m->m_len, is_beacon ? " beacon" : "");
5091
5092 if (linuxkpi_debug_80211 & D80211_TRACE_RX_DUMP)
5093 hexdump(mtod(m, const void *), m->m_len, "RX (raw) ", 0);
5094
5095 /* Implement a dump_rxcb() !!! */
5096 if (linuxkpi_debug_80211 & D80211_TRACE_RX)
5097 printf("TRACE %s: RXCB: %ju %ju %u, %#0x, %u, %#0x, %#0x, "
5098 "%u band %u, %u { %d %d %d %d }, %d, %#x %#x %#x %#x %u %u %u\n",
5099 __func__,
5100 (uintmax_t)rx_status->boottime_ns,
5101 (uintmax_t)rx_status->mactime,
5102 rx_status->device_timestamp,
5103 rx_status->flag,
5104 rx_status->freq,
5105 rx_status->bw,
5106 rx_status->encoding,
5107 rx_status->ampdu_reference,
5108 rx_status->band,
5109 rx_status->chains,
5110 rx_status->chain_signal[0],
5111 rx_status->chain_signal[1],
5112 rx_status->chain_signal[2],
5113 rx_status->chain_signal[3],
5114 rx_status->signal,
5115 rx_status->enc_flags,
5116 rx_status->he_dcm,
5117 rx_status->he_gi,
5118 rx_status->he_ru,
5119 rx_status->zero_length_psdu_type,
5120 rx_status->nss,
5121 rx_status->rate_idx);
5122 no_trace_beacons:
5123 #endif
5124
5125 memset(&rx_stats, 0, sizeof(rx_stats));
5126 rx_stats.r_flags = IEEE80211_R_NF | IEEE80211_R_RSSI;
5127 /* XXX-BZ correct hardcoded rssi and noise floor, how? survey? */
5128 rx_stats.c_nf = -96;
5129 if (ieee80211_hw_check(hw, SIGNAL_DBM) &&
5130 !(rx_status->flag & RX_FLAG_NO_SIGNAL_VAL))
5131 rssi = rx_status->signal;
5132 else
5133 rssi = rx_stats.c_nf;
5134 /*
5135 * net80211 signal strength data are in .5 dBm units relative to
5136 * the current noise floor (see comment in ieee80211_node.h).
5137 */
5138 rssi -= rx_stats.c_nf;
5139 rx_stats.c_rssi = rssi * 2;
5140 rx_stats.r_flags |= IEEE80211_R_BAND;
5141 rx_stats.c_band =
5142 lkpi_nl80211_band_to_net80211_band(rx_status->band);
5143 rx_stats.r_flags |= IEEE80211_R_FREQ | IEEE80211_R_IEEE;
5144 rx_stats.c_freq = rx_status->freq;
5145 rx_stats.c_ieee = ieee80211_mhz2ieee(rx_stats.c_freq, rx_stats.c_band);
5146
5147 /* XXX (*sta_statistics)() to get to some of that? */
5148 /* XXX-BZ dump the FreeBSD version of rx_stats as well! */
5149
5150 lhw = HW_TO_LHW(hw);
5151 ic = lhw->ic;
5152
5153 ok = ieee80211_add_rx_params(m, &rx_stats);
5154 if (ok == 0) {
5155 m_freem(m);
5156 counter_u64_add(ic->ic_ierrors, 1);
5157 goto err;
5158 }
5159
5160 lsta = NULL;
5161 if (sta != NULL) {
5162 lsta = STA_TO_LSTA(sta);
5163 ni = ieee80211_ref_node(lsta->ni);
5164 } else {
5165 struct ieee80211_frame_min *wh;
5166
5167 wh = mtod(m, struct ieee80211_frame_min *);
5168 ni = ieee80211_find_rxnode(ic, wh);
5169 if (ni != NULL)
5170 lsta = ni->ni_drv_data;
5171 }
5172
5173 if (ni != NULL)
5174 vap = ni->ni_vap;
5175 else
5176 /*
5177 * XXX-BZ can we improve this by looking at the frame hdr
5178 * or other meta-data passed up?
5179 */
5180 vap = TAILQ_FIRST(&ic->ic_vaps);
5181
5182 #ifdef LINUXKPI_DEBUG_80211
5183 if (linuxkpi_debug_80211 & D80211_TRACE_RX)
5184 printf("TRACE %s: sta %p lsta %p state %d ni %p vap %p%s\n",
5185 __func__, sta, lsta, (lsta != NULL) ? lsta->state : -1,
5186 ni, vap, is_beacon ? " beacon" : "");
5187 #endif
5188
5189 if (ni != NULL && vap != NULL && is_beacon &&
5190 rx_status->device_timestamp > 0 &&
5191 m->m_pkthdr.len >= sizeof(struct ieee80211_frame)) {
5192 struct lkpi_vif *lvif;
5193 struct ieee80211_vif *vif;
5194 struct ieee80211_frame *wh;
5195
5196 wh = mtod(m, struct ieee80211_frame *);
5197 if (!IEEE80211_ADDR_EQ(wh->i_addr2, ni->ni_bssid))
5198 goto skip_device_ts;
5199
5200 lvif = VAP_TO_LVIF(vap);
5201 vif = LVIF_TO_VIF(lvif);
5202
5203 IMPROVE("TIMING_BEACON_ONLY?");
5204 /* mac80211 specific (not net80211) so keep it here. */
5205 vif->bss_conf.sync_device_ts = rx_status->device_timestamp;
5206 /*
5207 * net80211 should take care of the other information (sync_tsf,
5208 * sync_dtim_count) as otherwise we need to parse the beacon.
5209 */
5210 skip_device_ts:
5211 ;
5212 }
5213
5214 if (vap != NULL && vap->iv_state > IEEE80211_S_INIT &&
5215 ieee80211_radiotap_active_vap(vap)) {
5216 struct lkpi_radiotap_rx_hdr *rtap;
5217
5218 rtap = &lhw->rtap_rx;
5219 rtap->wr_tsft = rx_status->device_timestamp;
5220 rtap->wr_flags = 0;
5221 if (rx_status->enc_flags & RX_ENC_FLAG_SHORTPRE)
5222 rtap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE;
5223 if (rx_status->enc_flags & RX_ENC_FLAG_SHORT_GI)
5224 rtap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTGI;
5225 #if 0 /* .. or it does not given we strip it below. */
5226 if (ieee80211_hw_check(hw, RX_INCLUDES_FCS))
5227 rtap->wr_flags |= IEEE80211_RADIOTAP_F_FCS;
5228 #endif
5229 if (rx_status->flag & RX_FLAG_FAILED_FCS_CRC)
5230 rtap->wr_flags |= IEEE80211_RADIOTAP_F_BADFCS;
5231 rtap->wr_rate = 0;
5232 IMPROVE();
5233 /* XXX TODO status->encoding / rate_index / bw */
5234 rtap->wr_chan_freq = htole16(rx_stats.c_freq);
5235 if (ic->ic_curchan->ic_ieee == rx_stats.c_ieee)
5236 rtap->wr_chan_flags = htole16(ic->ic_curchan->ic_flags);
5237 rtap->wr_dbm_antsignal = rssi;
5238 rtap->wr_dbm_antnoise = rx_stats.c_nf;
5239 }
5240
5241 if (ieee80211_hw_check(hw, RX_INCLUDES_FCS))
5242 m_adj(m, -IEEE80211_CRC_LEN);
5243
5244 #if 0
5245 if (list != NULL) {
5246 /*
5247 * Normally this would be queued up and delivered by
5248 * netif_receive_skb_list(), napi_gro_receive(), or the like.
5249 * See mt76::mac80211.c as only current possible consumer.
5250 */
5251 IMPROVE("we simply pass the packet to net80211 to deal with.");
5252 }
5253 #endif
5254
5255 /*
5256 * Attach meta-information to the mbuf for the deferred RX path.
5257 * Currently this is best-effort. Should we need to be hard,
5258 * drop the frame and goto err;
5259 */
5260 if (ni != NULL) {
5261 struct m_tag *mtag;
5262 struct lkpi_80211_tag_rxni *rxni;
5263
5264 mtag = m_tag_alloc(MTAG_ABI_LKPI80211, LKPI80211_TAG_RXNI,
5265 sizeof(*rxni), IEEE80211_M_NOWAIT);
5266 if (mtag != NULL) {
5267 rxni = (struct lkpi_80211_tag_rxni *)(mtag + 1);
5268 rxni->ni = ni; /* We hold a reference. */
5269 m_tag_prepend(m, mtag);
5270 }
5271 }
5272
5273 LKPI_80211_LHW_RXQ_LOCK(lhw);
5274 if (lhw->rxq_stopped) {
5275 LKPI_80211_LHW_RXQ_UNLOCK(lhw);
5276 m_freem(m);
5277 goto err;
5278 }
5279
5280 mbufq_enqueue(&lhw->rxq, m);
5281 taskqueue_enqueue(taskqueue_thread, &lhw->rxq_task);
5282 LKPI_80211_LHW_RXQ_UNLOCK(lhw);
5283
5284 IMPROVE();
5285
5286 err:
5287 /* The skb is ours so we can free it :-) */
5288 kfree_skb(skb);
5289 }
5290
5291 uint8_t
linuxkpi_ieee80211_get_tid(struct ieee80211_hdr * hdr,bool nonqos_ok)5292 linuxkpi_ieee80211_get_tid(struct ieee80211_hdr *hdr, bool nonqos_ok)
5293 {
5294 const struct ieee80211_frame *wh;
5295 uint8_t tid;
5296
5297 /* Linux seems to assume this is a QOS-Data-Frame */
5298 KASSERT(nonqos_ok || ieee80211_is_data_qos(hdr->frame_control),
5299 ("%s: hdr %p fc %#06x not qos_data\n", __func__, hdr,
5300 hdr->frame_control));
5301
5302 wh = (const struct ieee80211_frame *)hdr;
5303 tid = ieee80211_gettid(wh);
5304 KASSERT(nonqos_ok || tid == (tid & IEEE80211_QOS_TID), ("%s: tid %u "
5305 "not expected (%u?)\n", __func__, tid, IEEE80211_NONQOS_TID));
5306
5307 return (tid);
5308 }
5309
5310 struct wiphy *
linuxkpi_wiphy_new(const struct cfg80211_ops * ops,size_t priv_len)5311 linuxkpi_wiphy_new(const struct cfg80211_ops *ops, size_t priv_len)
5312 {
5313 struct lkpi_wiphy *lwiphy;
5314
5315 lwiphy = kzalloc(sizeof(*lwiphy) + priv_len, GFP_KERNEL);
5316 if (lwiphy == NULL)
5317 return (NULL);
5318 lwiphy->ops = ops;
5319
5320 /* XXX TODO */
5321 return (LWIPHY_TO_WIPHY(lwiphy));
5322 }
5323
5324 void
linuxkpi_wiphy_free(struct wiphy * wiphy)5325 linuxkpi_wiphy_free(struct wiphy *wiphy)
5326 {
5327 struct lkpi_wiphy *lwiphy;
5328
5329 if (wiphy == NULL)
5330 return;
5331
5332 lwiphy = WIPHY_TO_LWIPHY(wiphy);
5333 kfree(lwiphy);
5334 }
5335
5336 uint32_t
linuxkpi_ieee80211_channel_to_frequency(uint32_t channel,enum nl80211_band band)5337 linuxkpi_ieee80211_channel_to_frequency(uint32_t channel,
5338 enum nl80211_band band)
5339 {
5340
5341 switch (band) {
5342 case NL80211_BAND_2GHZ:
5343 return (ieee80211_ieee2mhz(channel, IEEE80211_CHAN_2GHZ));
5344 break;
5345 case NL80211_BAND_5GHZ:
5346 return (ieee80211_ieee2mhz(channel, IEEE80211_CHAN_5GHZ));
5347 break;
5348 default:
5349 /* XXX abort, retry, error, panic? */
5350 break;
5351 }
5352
5353 return (0);
5354 }
5355
5356 uint32_t
linuxkpi_ieee80211_frequency_to_channel(uint32_t freq,uint32_t flags __unused)5357 linuxkpi_ieee80211_frequency_to_channel(uint32_t freq, uint32_t flags __unused)
5358 {
5359
5360 return (ieee80211_mhz2ieee(freq, 0));
5361 }
5362
5363 #if 0
5364 static struct lkpi_sta *
5365 lkpi_find_lsta_by_ni(struct lkpi_vif *lvif, struct ieee80211_node *ni)
5366 {
5367 struct lkpi_sta *lsta, *temp;
5368
5369 LKPI_80211_LVIF_LOCK(lvif);
5370 TAILQ_FOREACH_SAFE(lsta, &lvif->lsta_head, lsta_entry, temp) {
5371 if (lsta->ni == ni) {
5372 LKPI_80211_LVIF_UNLOCK(lvif);
5373 return (lsta);
5374 }
5375 }
5376 LKPI_80211_LVIF_UNLOCK(lvif);
5377
5378 return (NULL);
5379 }
5380 #endif
5381
5382 struct ieee80211_sta *
linuxkpi_ieee80211_find_sta(struct ieee80211_vif * vif,const u8 * peer)5383 linuxkpi_ieee80211_find_sta(struct ieee80211_vif *vif, const u8 *peer)
5384 {
5385 struct lkpi_vif *lvif;
5386 struct lkpi_sta *lsta, *temp;
5387 struct ieee80211_sta *sta;
5388
5389 lvif = VIF_TO_LVIF(vif);
5390
5391 LKPI_80211_LVIF_LOCK(lvif);
5392 TAILQ_FOREACH_SAFE(lsta, &lvif->lsta_head, lsta_entry, temp) {
5393 sta = LSTA_TO_STA(lsta);
5394 if (IEEE80211_ADDR_EQ(sta->addr, peer)) {
5395 LKPI_80211_LVIF_UNLOCK(lvif);
5396 return (sta);
5397 }
5398 }
5399 LKPI_80211_LVIF_UNLOCK(lvif);
5400 return (NULL);
5401 }
5402
5403 struct ieee80211_sta *
linuxkpi_ieee80211_find_sta_by_ifaddr(struct ieee80211_hw * hw,const uint8_t * addr,const uint8_t * ourvifaddr)5404 linuxkpi_ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw,
5405 const uint8_t *addr, const uint8_t *ourvifaddr)
5406 {
5407 struct lkpi_hw *lhw;
5408 struct lkpi_vif *lvif;
5409 struct lkpi_sta *lsta;
5410 struct ieee80211_vif *vif;
5411 struct ieee80211_sta *sta;
5412
5413 lhw = wiphy_priv(hw->wiphy);
5414 sta = NULL;
5415
5416 LKPI_80211_LHW_LVIF_LOCK(lhw);
5417 TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
5418
5419 /* XXX-BZ check our address from the vif. */
5420
5421 vif = LVIF_TO_VIF(lvif);
5422 if (ourvifaddr != NULL &&
5423 !IEEE80211_ADDR_EQ(vif->addr, ourvifaddr))
5424 continue;
5425 sta = linuxkpi_ieee80211_find_sta(vif, addr);
5426 if (sta != NULL)
5427 break;
5428 }
5429 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
5430
5431 if (sta != NULL) {
5432 lsta = STA_TO_LSTA(sta);
5433 if (!lsta->added_to_drv)
5434 return (NULL);
5435 }
5436
5437 return (sta);
5438 }
5439
5440 struct sk_buff *
linuxkpi_ieee80211_tx_dequeue(struct ieee80211_hw * hw,struct ieee80211_txq * txq)5441 linuxkpi_ieee80211_tx_dequeue(struct ieee80211_hw *hw,
5442 struct ieee80211_txq *txq)
5443 {
5444 struct lkpi_txq *ltxq;
5445 struct lkpi_vif *lvif;
5446 struct sk_buff *skb;
5447
5448 skb = NULL;
5449 ltxq = TXQ_TO_LTXQ(txq);
5450 ltxq->seen_dequeue = true;
5451
5452 if (ltxq->stopped)
5453 goto stopped;
5454
5455 lvif = VIF_TO_LVIF(ltxq->txq.vif);
5456 if (lvif->hw_queue_stopped[ltxq->txq.ac]) {
5457 ltxq->stopped = true;
5458 goto stopped;
5459 }
5460
5461 IMPROVE("hw(TX_FRAG_LIST)");
5462
5463 LKPI_80211_LTXQ_LOCK(ltxq);
5464 skb = skb_dequeue(<xq->skbq);
5465 LKPI_80211_LTXQ_UNLOCK(ltxq);
5466
5467 stopped:
5468 return (skb);
5469 }
5470
5471 void
linuxkpi_ieee80211_txq_get_depth(struct ieee80211_txq * txq,unsigned long * frame_cnt,unsigned long * byte_cnt)5472 linuxkpi_ieee80211_txq_get_depth(struct ieee80211_txq *txq,
5473 unsigned long *frame_cnt, unsigned long *byte_cnt)
5474 {
5475 struct lkpi_txq *ltxq;
5476 struct sk_buff *skb;
5477 unsigned long fc, bc;
5478
5479 ltxq = TXQ_TO_LTXQ(txq);
5480
5481 fc = bc = 0;
5482 LKPI_80211_LTXQ_LOCK(ltxq);
5483 skb_queue_walk(<xq->skbq, skb) {
5484 fc++;
5485 bc += skb->len;
5486 }
5487 LKPI_80211_LTXQ_UNLOCK(ltxq);
5488 if (frame_cnt)
5489 *frame_cnt = fc;
5490 if (byte_cnt)
5491 *byte_cnt = bc;
5492
5493 /* Validate that this is doing the correct thing. */
5494 /* Should we keep track on en/dequeue? */
5495 IMPROVE();
5496 }
5497
5498 /*
5499 * We are called from ieee80211_free_txskb() or ieee80211_tx_status().
5500 * The latter tries to derive the success status from the info flags
5501 * passed back from the driver. rawx_mit() saves the ni on the m and the
5502 * m on the skb for us to be able to give feedback to net80211.
5503 */
5504 static void
_lkpi_ieee80211_free_txskb(struct ieee80211_hw * hw,struct sk_buff * skb,int status)5505 _lkpi_ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb,
5506 int status)
5507 {
5508 struct ieee80211_node *ni;
5509 struct mbuf *m;
5510
5511 m = skb->m;
5512 skb->m = NULL;
5513
5514 if (m != NULL) {
5515 ni = m->m_pkthdr.PH_loc.ptr;
5516 /* Status: 0 is ok, != 0 is error. */
5517 ieee80211_tx_complete(ni, m, status);
5518 /* ni & mbuf were consumed. */
5519 }
5520 }
5521
5522 void
linuxkpi_ieee80211_free_txskb(struct ieee80211_hw * hw,struct sk_buff * skb,int status)5523 linuxkpi_ieee80211_free_txskb(struct ieee80211_hw *hw, struct sk_buff *skb,
5524 int status)
5525 {
5526
5527 _lkpi_ieee80211_free_txskb(hw, skb, status);
5528 kfree_skb(skb);
5529 }
5530
5531 void
linuxkpi_ieee80211_tx_status_ext(struct ieee80211_hw * hw,struct ieee80211_tx_status * txstat)5532 linuxkpi_ieee80211_tx_status_ext(struct ieee80211_hw *hw,
5533 struct ieee80211_tx_status *txstat)
5534 {
5535 struct sk_buff *skb;
5536 struct ieee80211_tx_info *info;
5537 struct ieee80211_ratectl_tx_status txs;
5538 struct ieee80211_node *ni;
5539 int status;
5540
5541 skb = txstat->skb;
5542 if (skb->m != NULL) {
5543 struct mbuf *m;
5544
5545 m = skb->m;
5546 ni = m->m_pkthdr.PH_loc.ptr;
5547 memset(&txs, 0, sizeof(txs));
5548 } else {
5549 ni = NULL;
5550 }
5551
5552 info = txstat->info;
5553 if (info->flags & IEEE80211_TX_STAT_ACK) {
5554 status = 0; /* No error. */
5555 txs.status = IEEE80211_RATECTL_TX_SUCCESS;
5556 } else {
5557 status = 1;
5558 txs.status = IEEE80211_RATECTL_TX_FAIL_UNSPECIFIED;
5559 }
5560
5561 if (ni != NULL) {
5562 int ridx __unused;
5563 #ifdef LINUXKPI_DEBUG_80211
5564 int old_rate;
5565
5566 old_rate = ni->ni_vap->iv_bss->ni_txrate;
5567 #endif
5568 txs.pktlen = skb->len;
5569 txs.flags |= IEEE80211_RATECTL_STATUS_PKTLEN;
5570 if (info->status.rates[0].count > 1) {
5571 txs.long_retries = info->status.rates[0].count - 1; /* 1 + retries in drivers. */
5572 txs.flags |= IEEE80211_RATECTL_STATUS_LONG_RETRY;
5573 }
5574 #if 0 /* Unused in net80211 currently. */
5575 /* XXX-BZ convert check .flags for MCS/VHT/.. */
5576 txs.final_rate = info->status.rates[0].idx;
5577 txs.flags |= IEEE80211_RATECTL_STATUS_FINAL_RATE;
5578 #endif
5579 if (info->status.flags & IEEE80211_TX_STATUS_ACK_SIGNAL_VALID) {
5580 txs.rssi = info->status.ack_signal; /* XXX-BZ CONVERT? */
5581 txs.flags |= IEEE80211_RATECTL_STATUS_RSSI;
5582 }
5583
5584 IMPROVE("only update of rate matches but that requires us to get a proper rate");
5585 ieee80211_ratectl_tx_complete(ni, &txs);
5586 ridx = ieee80211_ratectl_rate(ni->ni_vap->iv_bss, NULL, 0);
5587
5588 #ifdef LINUXKPI_DEBUG_80211
5589 if (linuxkpi_debug_80211 & D80211_TRACE_TX) {
5590 printf("TX-RATE: %s: old %d new %d ridx %d, "
5591 "long_retries %d\n", __func__,
5592 old_rate, ni->ni_vap->iv_bss->ni_txrate,
5593 ridx, txs.long_retries);
5594 }
5595 #endif
5596 }
5597
5598 #ifdef LINUXKPI_DEBUG_80211
5599 if (linuxkpi_debug_80211 & D80211_TRACE_TX)
5600 printf("TX-STATUS: %s: hw %p skb %p status %d : flags %#x "
5601 "band %u hw_queue %u tx_time_est %d : "
5602 "rates [ %u %u %#x, %u %u %#x, %u %u %#x, %u %u %#x ] "
5603 "ack_signal %u ampdu_ack_len %u ampdu_len %u antenna %u "
5604 "tx_time %u flags %#x "
5605 "status_driver_data [ %p %p ]\n",
5606 __func__, hw, skb, status, info->flags,
5607 info->band, info->hw_queue, info->tx_time_est,
5608 info->status.rates[0].idx, info->status.rates[0].count,
5609 info->status.rates[0].flags,
5610 info->status.rates[1].idx, info->status.rates[1].count,
5611 info->status.rates[1].flags,
5612 info->status.rates[2].idx, info->status.rates[2].count,
5613 info->status.rates[2].flags,
5614 info->status.rates[3].idx, info->status.rates[3].count,
5615 info->status.rates[3].flags,
5616 info->status.ack_signal, info->status.ampdu_ack_len,
5617 info->status.ampdu_len, info->status.antenna,
5618 info->status.tx_time, info->status.flags,
5619 info->status.status_driver_data[0],
5620 info->status.status_driver_data[1]);
5621 #endif
5622
5623 if (txstat->free_list) {
5624 _lkpi_ieee80211_free_txskb(hw, skb, status);
5625 list_add_tail(&skb->list, txstat->free_list);
5626 } else {
5627 linuxkpi_ieee80211_free_txskb(hw, skb, status);
5628 }
5629 }
5630
5631 void
linuxkpi_ieee80211_tx_status(struct ieee80211_hw * hw,struct sk_buff * skb)5632 linuxkpi_ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
5633 {
5634 struct ieee80211_tx_status status;
5635
5636 memset(&status, 0, sizeof(status));
5637 status.info = IEEE80211_SKB_CB(skb);
5638 status.skb = skb;
5639 /* sta, n_rates, rates, free_list? */
5640
5641 ieee80211_tx_status_ext(hw, &status);
5642 }
5643
5644 /*
5645 * This is an internal bandaid for the moment for the way we glue
5646 * skbs and mbufs together for TX. Once we have skbs backed by
5647 * mbufs this should go away.
5648 * This is a public function but kept on the private KPI (lkpi_)
5649 * and is not exposed by a header file.
5650 */
5651 static void
lkpi_ieee80211_free_skb_mbuf(void * p)5652 lkpi_ieee80211_free_skb_mbuf(void *p)
5653 {
5654 struct ieee80211_node *ni;
5655 struct mbuf *m;
5656
5657 if (p == NULL)
5658 return;
5659
5660 m = (struct mbuf *)p;
5661 M_ASSERTPKTHDR(m);
5662
5663 ni = m->m_pkthdr.PH_loc.ptr;
5664 m->m_pkthdr.PH_loc.ptr = NULL;
5665 if (ni != NULL)
5666 ieee80211_free_node(ni);
5667 m_freem(m);
5668 }
5669
5670 void
linuxkpi_ieee80211_queue_delayed_work(struct ieee80211_hw * hw,struct delayed_work * w,int delay)5671 linuxkpi_ieee80211_queue_delayed_work(struct ieee80211_hw *hw,
5672 struct delayed_work *w, int delay)
5673 {
5674 struct lkpi_hw *lhw;
5675
5676 /* Need to make sure hw is in a stable (non-suspended) state. */
5677 IMPROVE();
5678
5679 lhw = HW_TO_LHW(hw);
5680 queue_delayed_work(lhw->workq, w, delay);
5681 }
5682
5683 void
linuxkpi_ieee80211_queue_work(struct ieee80211_hw * hw,struct work_struct * w)5684 linuxkpi_ieee80211_queue_work(struct ieee80211_hw *hw,
5685 struct work_struct *w)
5686 {
5687 struct lkpi_hw *lhw;
5688
5689 /* Need to make sure hw is in a stable (non-suspended) state. */
5690 IMPROVE();
5691
5692 lhw = HW_TO_LHW(hw);
5693 queue_work(lhw->workq, w);
5694 }
5695
5696 struct sk_buff *
linuxkpi_ieee80211_probereq_get(struct ieee80211_hw * hw,uint8_t * addr,uint8_t * ssid,size_t ssid_len,size_t tailroom)5697 linuxkpi_ieee80211_probereq_get(struct ieee80211_hw *hw, uint8_t *addr,
5698 uint8_t *ssid, size_t ssid_len, size_t tailroom)
5699 {
5700 struct sk_buff *skb;
5701 struct ieee80211_frame *wh;
5702 uint8_t *p;
5703 size_t len;
5704
5705 len = sizeof(*wh);
5706 len += 2 + ssid_len;
5707
5708 skb = dev_alloc_skb(hw->extra_tx_headroom + len + tailroom);
5709 if (skb == NULL)
5710 return (NULL);
5711
5712 skb_reserve(skb, hw->extra_tx_headroom);
5713
5714 wh = skb_put_zero(skb, sizeof(*wh));
5715 wh->i_fc[0] = IEEE80211_FC0_VERSION_0;
5716 wh->i_fc[0] |= IEEE80211_FC0_SUBTYPE_PROBE_REQ | IEEE80211_FC0_TYPE_MGT;
5717 IEEE80211_ADDR_COPY(wh->i_addr1, ieee80211broadcastaddr);
5718 IEEE80211_ADDR_COPY(wh->i_addr2, addr);
5719 IEEE80211_ADDR_COPY(wh->i_addr3, ieee80211broadcastaddr);
5720
5721 p = skb_put(skb, 2 + ssid_len);
5722 *p++ = IEEE80211_ELEMID_SSID;
5723 *p++ = ssid_len;
5724 if (ssid_len > 0)
5725 memcpy(p, ssid, ssid_len);
5726
5727 return (skb);
5728 }
5729
5730 struct sk_buff *
linuxkpi_ieee80211_pspoll_get(struct ieee80211_hw * hw,struct ieee80211_vif * vif)5731 linuxkpi_ieee80211_pspoll_get(struct ieee80211_hw *hw,
5732 struct ieee80211_vif *vif)
5733 {
5734 struct lkpi_vif *lvif;
5735 struct ieee80211vap *vap;
5736 struct sk_buff *skb;
5737 struct ieee80211_frame_pspoll *psp;
5738 uint16_t v;
5739
5740 skb = dev_alloc_skb(hw->extra_tx_headroom + sizeof(*psp));
5741 if (skb == NULL)
5742 return (NULL);
5743
5744 skb_reserve(skb, hw->extra_tx_headroom);
5745
5746 lvif = VIF_TO_LVIF(vif);
5747 vap = LVIF_TO_VAP(lvif);
5748
5749 psp = skb_put_zero(skb, sizeof(*psp));
5750 psp->i_fc[0] = IEEE80211_FC0_VERSION_0;
5751 psp->i_fc[0] |= IEEE80211_FC0_SUBTYPE_PS_POLL | IEEE80211_FC0_TYPE_CTL;
5752 v = htole16(vif->cfg.aid | 1<<15 | 1<<16);
5753 memcpy(&psp->i_aid, &v, sizeof(v));
5754 IEEE80211_ADDR_COPY(psp->i_bssid, vap->iv_bss->ni_macaddr);
5755 IEEE80211_ADDR_COPY(psp->i_ta, vif->addr);
5756
5757 return (skb);
5758 }
5759
5760 struct sk_buff *
linuxkpi_ieee80211_nullfunc_get(struct ieee80211_hw * hw,struct ieee80211_vif * vif,int linkid,bool qos)5761 linuxkpi_ieee80211_nullfunc_get(struct ieee80211_hw *hw,
5762 struct ieee80211_vif *vif, int linkid, bool qos)
5763 {
5764 struct lkpi_vif *lvif;
5765 struct ieee80211vap *vap;
5766 struct sk_buff *skb;
5767 struct ieee80211_frame *nullf;
5768
5769 IMPROVE("linkid");
5770
5771 skb = dev_alloc_skb(hw->extra_tx_headroom + sizeof(*nullf));
5772 if (skb == NULL)
5773 return (NULL);
5774
5775 skb_reserve(skb, hw->extra_tx_headroom);
5776
5777 lvif = VIF_TO_LVIF(vif);
5778 vap = LVIF_TO_VAP(lvif);
5779
5780 nullf = skb_put_zero(skb, sizeof(*nullf));
5781 nullf->i_fc[0] = IEEE80211_FC0_VERSION_0;
5782 nullf->i_fc[0] |= IEEE80211_FC0_SUBTYPE_NODATA | IEEE80211_FC0_TYPE_DATA;
5783 nullf->i_fc[1] = IEEE80211_FC1_DIR_TODS;
5784
5785 IEEE80211_ADDR_COPY(nullf->i_addr1, vap->iv_bss->ni_bssid);
5786 IEEE80211_ADDR_COPY(nullf->i_addr2, vif->addr);
5787 IEEE80211_ADDR_COPY(nullf->i_addr3, vap->iv_bss->ni_macaddr);
5788
5789 return (skb);
5790 }
5791
5792 struct wireless_dev *
linuxkpi_ieee80211_vif_to_wdev(struct ieee80211_vif * vif)5793 linuxkpi_ieee80211_vif_to_wdev(struct ieee80211_vif *vif)
5794 {
5795 struct lkpi_vif *lvif;
5796
5797 lvif = VIF_TO_LVIF(vif);
5798 return (&lvif->wdev);
5799 }
5800
5801 void
linuxkpi_ieee80211_connection_loss(struct ieee80211_vif * vif)5802 linuxkpi_ieee80211_connection_loss(struct ieee80211_vif *vif)
5803 {
5804 struct lkpi_vif *lvif;
5805 struct ieee80211vap *vap;
5806 enum ieee80211_state nstate;
5807 int arg;
5808
5809 lvif = VIF_TO_LVIF(vif);
5810 vap = LVIF_TO_VAP(lvif);
5811
5812 /*
5813 * Go to init; otherwise we need to elaborately check state and
5814 * handle accordingly, e.g., if in RUN we could call iv_bmiss.
5815 * Let the statemachine handle all neccessary changes.
5816 */
5817 nstate = IEEE80211_S_INIT;
5818 arg = 0; /* Not a valid reason. */
5819
5820 ic_printf(vap->iv_ic, "%s: vif %p vap %p state %s\n", __func__,
5821 vif, vap, ieee80211_state_name[vap->iv_state]);
5822 ieee80211_new_state(vap, nstate, arg);
5823 }
5824
5825 void
linuxkpi_ieee80211_beacon_loss(struct ieee80211_vif * vif)5826 linuxkpi_ieee80211_beacon_loss(struct ieee80211_vif *vif)
5827 {
5828 struct lkpi_vif *lvif;
5829 struct ieee80211vap *vap;
5830
5831 lvif = VIF_TO_LVIF(vif);
5832 vap = LVIF_TO_VAP(lvif);
5833
5834 ic_printf(vap->iv_ic, "%s: vif %p vap %p state %s\n", __func__,
5835 vif, vap, ieee80211_state_name[vap->iv_state]);
5836 ieee80211_beacon_miss(vap->iv_ic);
5837 }
5838
5839 /* -------------------------------------------------------------------------- */
5840
5841 void
linuxkpi_ieee80211_stop_queue(struct ieee80211_hw * hw,int qnum)5842 linuxkpi_ieee80211_stop_queue(struct ieee80211_hw *hw, int qnum)
5843 {
5844 struct lkpi_hw *lhw;
5845 struct lkpi_vif *lvif;
5846 struct ieee80211_vif *vif;
5847 int ac_count, ac;
5848
5849 KASSERT(qnum < hw->queues, ("%s: qnum %d >= hw->queues %d, hw %p\n",
5850 __func__, qnum, hw->queues, hw));
5851
5852 lhw = wiphy_priv(hw->wiphy);
5853
5854 /* See lkpi_ic_vap_create(). */
5855 if (hw->queues >= IEEE80211_NUM_ACS)
5856 ac_count = IEEE80211_NUM_ACS;
5857 else
5858 ac_count = 1;
5859
5860 LKPI_80211_LHW_LVIF_LOCK(lhw);
5861 TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
5862
5863 vif = LVIF_TO_VIF(lvif);
5864 for (ac = 0; ac < ac_count; ac++) {
5865 IMPROVE_TXQ("LOCKING");
5866 if (qnum == vif->hw_queue[ac]) {
5867 #ifdef LINUXKPI_DEBUG_80211
5868 /*
5869 * For now log this to better understand
5870 * how this is supposed to work.
5871 */
5872 if (lvif->hw_queue_stopped[ac] &&
5873 (linuxkpi_debug_80211 & D80211_IMPROVE_TXQ) != 0)
5874 ic_printf(lhw->ic, "%s:%d: lhw %p hw %p "
5875 "lvif %p vif %p ac %d qnum %d already "
5876 "stopped\n", __func__, __LINE__,
5877 lhw, hw, lvif, vif, ac, qnum);
5878 #endif
5879 lvif->hw_queue_stopped[ac] = true;
5880 }
5881 }
5882 }
5883 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
5884 }
5885
5886 void
linuxkpi_ieee80211_stop_queues(struct ieee80211_hw * hw)5887 linuxkpi_ieee80211_stop_queues(struct ieee80211_hw *hw)
5888 {
5889 int i;
5890
5891 IMPROVE_TXQ("Locking; do we need further info?");
5892 for (i = 0; i < hw->queues; i++)
5893 linuxkpi_ieee80211_stop_queue(hw, i);
5894 }
5895
5896
5897 static void
lkpi_ieee80211_wake_queues(struct ieee80211_hw * hw,int hwq)5898 lkpi_ieee80211_wake_queues(struct ieee80211_hw *hw, int hwq)
5899 {
5900 struct lkpi_hw *lhw;
5901 struct lkpi_vif *lvif;
5902 struct lkpi_sta *lsta;
5903 int ac_count, ac, tid;
5904
5905 /* See lkpi_ic_vap_create(). */
5906 if (hw->queues >= IEEE80211_NUM_ACS)
5907 ac_count = IEEE80211_NUM_ACS;
5908 else
5909 ac_count = 1;
5910
5911 lhw = wiphy_priv(hw->wiphy);
5912
5913 IMPROVE_TXQ("Locking");
5914 LKPI_80211_LHW_LVIF_LOCK(lhw);
5915 TAILQ_FOREACH(lvif, &lhw->lvif_head, lvif_entry) {
5916 struct ieee80211_vif *vif;
5917
5918 vif = LVIF_TO_VIF(lvif);
5919 for (ac = 0; ac < ac_count; ac++) {
5920
5921 if (hwq == vif->hw_queue[ac]) {
5922
5923 /* XXX-BZ what about software scan? */
5924
5925 #ifdef LINUXKPI_DEBUG_80211
5926 /*
5927 * For now log this to better understand
5928 * how this is supposed to work.
5929 */
5930 if (!lvif->hw_queue_stopped[ac] &&
5931 (linuxkpi_debug_80211 & D80211_IMPROVE_TXQ) != 0)
5932 ic_printf(lhw->ic, "%s:%d: lhw %p hw %p "
5933 "lvif %p vif %p ac %d hw_q not stopped\n",
5934 __func__, __LINE__,
5935 lhw, hw, lvif, vif, ac);
5936 #endif
5937 lvif->hw_queue_stopped[ac] = false;
5938
5939 LKPI_80211_LVIF_LOCK(lvif);
5940 TAILQ_FOREACH(lsta, &lvif->lsta_head, lsta_entry) {
5941 struct ieee80211_sta *sta;
5942
5943 sta = LSTA_TO_STA(lsta);
5944 for (tid = 0; tid < nitems(sta->txq); tid++) {
5945 struct lkpi_txq *ltxq;
5946
5947 if (sta->txq[tid] == NULL)
5948 continue;
5949
5950 if (sta->txq[tid]->ac != ac)
5951 continue;
5952
5953 ltxq = TXQ_TO_LTXQ(sta->txq[tid]);
5954 if (!ltxq->stopped)
5955 continue;
5956
5957 ltxq->stopped = false;
5958
5959 /* XXX-BZ see when this explodes with all the locking. taskq? */
5960 lkpi_80211_mo_wake_tx_queue(hw, sta->txq[tid]);
5961 }
5962 }
5963 LKPI_80211_LVIF_UNLOCK(lvif);
5964 }
5965 }
5966 }
5967 LKPI_80211_LHW_LVIF_UNLOCK(lhw);
5968 }
5969
5970 void
linuxkpi_ieee80211_wake_queues(struct ieee80211_hw * hw)5971 linuxkpi_ieee80211_wake_queues(struct ieee80211_hw *hw)
5972 {
5973 int i;
5974
5975 IMPROVE_TXQ("Is this all/enough here?");
5976 for (i = 0; i < hw->queues; i++)
5977 lkpi_ieee80211_wake_queues(hw, i);
5978 }
5979
5980 void
linuxkpi_ieee80211_wake_queue(struct ieee80211_hw * hw,int qnum)5981 linuxkpi_ieee80211_wake_queue(struct ieee80211_hw *hw, int qnum)
5982 {
5983
5984 KASSERT(qnum < hw->queues, ("%s: qnum %d >= hw->queues %d, hw %p\n",
5985 __func__, qnum, hw->queues, hw));
5986
5987 lkpi_ieee80211_wake_queues(hw, qnum);
5988 }
5989
5990 /* This is just hardware queues. */
5991 void
linuxkpi_ieee80211_txq_schedule_start(struct ieee80211_hw * hw,uint8_t ac)5992 linuxkpi_ieee80211_txq_schedule_start(struct ieee80211_hw *hw, uint8_t ac)
5993 {
5994 struct lkpi_hw *lhw;
5995
5996 lhw = HW_TO_LHW(hw);
5997
5998 IMPROVE_TXQ("Are there reasons why we wouldn't schedule?");
5999 IMPROVE_TXQ("LOCKING");
6000 if (++lhw->txq_generation[ac] == 0)
6001 lhw->txq_generation[ac]++;
6002 }
6003
6004 struct ieee80211_txq *
linuxkpi_ieee80211_next_txq(struct ieee80211_hw * hw,uint8_t ac)6005 linuxkpi_ieee80211_next_txq(struct ieee80211_hw *hw, uint8_t ac)
6006 {
6007 struct lkpi_hw *lhw;
6008 struct ieee80211_txq *txq;
6009 struct lkpi_txq *ltxq;
6010
6011 lhw = HW_TO_LHW(hw);
6012 txq = NULL;
6013
6014 IMPROVE_TXQ("LOCKING");
6015
6016 /* Check that we are scheduled. */
6017 if (lhw->txq_generation[ac] == 0)
6018 goto out;
6019
6020 ltxq = TAILQ_FIRST(&lhw->scheduled_txqs[ac]);
6021 if (ltxq == NULL)
6022 goto out;
6023 if (ltxq->txq_generation == lhw->txq_generation[ac])
6024 goto out;
6025
6026 ltxq->txq_generation = lhw->txq_generation[ac];
6027 TAILQ_REMOVE(&lhw->scheduled_txqs[ac], ltxq, txq_entry);
6028 txq = <xq->txq;
6029 TAILQ_ELEM_INIT(ltxq, txq_entry);
6030
6031 out:
6032 return (txq);
6033 }
6034
linuxkpi_ieee80211_schedule_txq(struct ieee80211_hw * hw,struct ieee80211_txq * txq,bool withoutpkts)6035 void linuxkpi_ieee80211_schedule_txq(struct ieee80211_hw *hw,
6036 struct ieee80211_txq *txq, bool withoutpkts)
6037 {
6038 struct lkpi_hw *lhw;
6039 struct lkpi_txq *ltxq;
6040 bool ltxq_empty;
6041
6042 ltxq = TXQ_TO_LTXQ(txq);
6043
6044 IMPROVE_TXQ("LOCKING");
6045
6046 /* Only schedule if work to do or asked to anyway. */
6047 LKPI_80211_LTXQ_LOCK(ltxq);
6048 ltxq_empty = skb_queue_empty(<xq->skbq);
6049 LKPI_80211_LTXQ_UNLOCK(ltxq);
6050 if (!withoutpkts && ltxq_empty)
6051 goto out;
6052
6053 /* Make sure we do not double-schedule. */
6054 if (ltxq->txq_entry.tqe_next != NULL)
6055 goto out;
6056
6057 lhw = HW_TO_LHW(hw);
6058 TAILQ_INSERT_TAIL(&lhw->scheduled_txqs[txq->ac], ltxq, txq_entry);
6059 out:
6060 return;
6061 }
6062
6063 void
linuxkpi_ieee80211_handle_wake_tx_queue(struct ieee80211_hw * hw,struct ieee80211_txq * txq)6064 linuxkpi_ieee80211_handle_wake_tx_queue(struct ieee80211_hw *hw,
6065 struct ieee80211_txq *txq)
6066 {
6067 struct lkpi_hw *lhw;
6068 struct ieee80211_txq *ntxq;
6069 struct ieee80211_tx_control control;
6070 struct sk_buff *skb;
6071
6072 lhw = HW_TO_LHW(hw);
6073
6074 LKPI_80211_LHW_TXQ_LOCK(lhw);
6075 ieee80211_txq_schedule_start(hw, txq->ac);
6076 do {
6077 ntxq = ieee80211_next_txq(hw, txq->ac);
6078 if (ntxq == NULL)
6079 break;
6080
6081 memset(&control, 0, sizeof(control));
6082 control.sta = ntxq->sta;
6083 do {
6084 skb = linuxkpi_ieee80211_tx_dequeue(hw, ntxq);
6085 if (skb == NULL)
6086 break;
6087 lkpi_80211_mo_tx(hw, &control, skb);
6088 } while(1);
6089
6090 ieee80211_return_txq(hw, ntxq, false);
6091 } while (1);
6092 ieee80211_txq_schedule_end(hw, txq->ac);
6093 LKPI_80211_LHW_TXQ_UNLOCK(lhw);
6094 }
6095
6096 /* -------------------------------------------------------------------------- */
6097
6098 struct lkpi_cfg80211_bss {
6099 u_int refcnt;
6100 struct cfg80211_bss bss;
6101 };
6102
6103 struct lkpi_cfg80211_get_bss_iter_lookup {
6104 struct wiphy *wiphy;
6105 struct linuxkpi_ieee80211_channel *chan;
6106 const uint8_t *bssid;
6107 const uint8_t *ssid;
6108 size_t ssid_len;
6109 enum ieee80211_bss_type bss_type;
6110 enum ieee80211_privacy privacy;
6111
6112 /*
6113 * Something to store a copy of the result as the net80211 scan cache
6114 * is not refoucnted so a scan entry might go away any time.
6115 */
6116 bool match;
6117 struct cfg80211_bss *bss;
6118 };
6119
6120 static void
lkpi_cfg80211_get_bss_iterf(void * arg,const struct ieee80211_scan_entry * se)6121 lkpi_cfg80211_get_bss_iterf(void *arg, const struct ieee80211_scan_entry *se)
6122 {
6123 struct lkpi_cfg80211_get_bss_iter_lookup *lookup;
6124 size_t ielen;
6125
6126 lookup = arg;
6127
6128 /* Do not try to find another match. */
6129 if (lookup->match)
6130 return;
6131
6132 /* Nothing to store result. */
6133 if (lookup->bss == NULL)
6134 return;
6135
6136 if (lookup->privacy != IEEE80211_PRIVACY_ANY) {
6137 /* if (se->se_capinfo & IEEE80211_CAPINFO_PRIVACY) */
6138 /* We have no idea what to compare to as the drivers only request ANY */
6139 return;
6140 }
6141
6142 if (lookup->bss_type != IEEE80211_BSS_TYPE_ANY) {
6143 /* if (se->se_capinfo & (IEEE80211_CAPINFO_IBSS|IEEE80211_CAPINFO_ESS)) */
6144 /* We have no idea what to compare to as the drivers only request ANY */
6145 return;
6146 }
6147
6148 if (lookup->chan != NULL) {
6149 struct linuxkpi_ieee80211_channel *chan;
6150
6151 chan = linuxkpi_ieee80211_get_channel(lookup->wiphy,
6152 se->se_chan->ic_freq);
6153 if (chan == NULL || chan != lookup->chan)
6154 return;
6155 }
6156
6157 if (lookup->bssid && !IEEE80211_ADDR_EQ(lookup->bssid, se->se_bssid))
6158 return;
6159
6160 if (lookup->ssid) {
6161 if (lookup->ssid_len != se->se_ssid[1] ||
6162 se->se_ssid[1] == 0)
6163 return;
6164 if (memcmp(lookup->ssid, se->se_ssid+2, lookup->ssid_len) != 0)
6165 return;
6166 }
6167
6168 ielen = se->se_ies.len;
6169
6170 lookup->bss->ies = malloc(sizeof(*lookup->bss->ies) + ielen,
6171 M_LKPI80211, M_NOWAIT | M_ZERO);
6172 if (lookup->bss->ies == NULL)
6173 return;
6174
6175 lookup->bss->ies->data = (uint8_t *)lookup->bss->ies + sizeof(*lookup->bss->ies);
6176 lookup->bss->ies->len = ielen;
6177 if (ielen)
6178 memcpy(lookup->bss->ies->data, se->se_ies.data, ielen);
6179
6180 lookup->match = true;
6181 }
6182
6183 struct cfg80211_bss *
linuxkpi_cfg80211_get_bss(struct wiphy * wiphy,struct linuxkpi_ieee80211_channel * chan,const uint8_t * bssid,const uint8_t * ssid,size_t ssid_len,enum ieee80211_bss_type bss_type,enum ieee80211_privacy privacy)6184 linuxkpi_cfg80211_get_bss(struct wiphy *wiphy, struct linuxkpi_ieee80211_channel *chan,
6185 const uint8_t *bssid, const uint8_t *ssid, size_t ssid_len,
6186 enum ieee80211_bss_type bss_type, enum ieee80211_privacy privacy)
6187 {
6188 struct lkpi_cfg80211_bss *lbss;
6189 struct lkpi_cfg80211_get_bss_iter_lookup lookup;
6190 struct lkpi_hw *lhw;
6191 struct ieee80211vap *vap;
6192
6193 lhw = wiphy_priv(wiphy);
6194
6195 /* Let's hope we can alloc. */
6196 lbss = malloc(sizeof(*lbss), M_LKPI80211, M_NOWAIT | M_ZERO);
6197 if (lbss == NULL) {
6198 ic_printf(lhw->ic, "%s: alloc failed.\n", __func__);
6199 return (NULL);
6200 }
6201
6202 lookup.wiphy = wiphy;
6203 lookup.chan = chan;
6204 lookup.bssid = bssid;
6205 lookup.ssid = ssid;
6206 lookup.ssid_len = ssid_len;
6207 lookup.bss_type = bss_type;
6208 lookup.privacy = privacy;
6209 lookup.match = false;
6210 lookup.bss = &lbss->bss;
6211
6212 IMPROVE("Iterate over all VAPs comparing perm_addr and addresses?");
6213 vap = TAILQ_FIRST(&lhw->ic->ic_vaps);
6214 ieee80211_scan_iterate(vap, lkpi_cfg80211_get_bss_iterf, &lookup);
6215 if (!lookup.match) {
6216 free(lbss, M_LKPI80211);
6217 return (NULL);
6218 }
6219
6220 refcount_init(&lbss->refcnt, 1);
6221 return (&lbss->bss);
6222 }
6223
6224 void
linuxkpi_cfg80211_put_bss(struct wiphy * wiphy,struct cfg80211_bss * bss)6225 linuxkpi_cfg80211_put_bss(struct wiphy *wiphy, struct cfg80211_bss *bss)
6226 {
6227 struct lkpi_cfg80211_bss *lbss;
6228
6229 lbss = container_of(bss, struct lkpi_cfg80211_bss, bss);
6230
6231 /* Free everything again on refcount ... */
6232 if (refcount_release(&lbss->refcnt)) {
6233 free(lbss->bss.ies, M_LKPI80211);
6234 free(lbss, M_LKPI80211);
6235 }
6236 }
6237
6238 void
linuxkpi_cfg80211_bss_flush(struct wiphy * wiphy)6239 linuxkpi_cfg80211_bss_flush(struct wiphy *wiphy)
6240 {
6241 struct lkpi_hw *lhw;
6242 struct ieee80211com *ic;
6243 struct ieee80211vap *vap;
6244
6245 lhw = wiphy_priv(wiphy);
6246 ic = lhw->ic;
6247
6248 /*
6249 * If we haven't called ieee80211_ifattach() yet
6250 * or there is no VAP, there are no scans to flush.
6251 */
6252 if (ic == NULL ||
6253 (lhw->sc_flags & LKPI_MAC80211_DRV_STARTED) == 0)
6254 return;
6255
6256 /* Should only happen on the current one? Not seen it late enough. */
6257 IEEE80211_LOCK(ic);
6258 TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
6259 ieee80211_scan_flush(vap);
6260 IEEE80211_UNLOCK(ic);
6261 }
6262
6263 /* -------------------------------------------------------------------------- */
6264
6265 MODULE_VERSION(linuxkpi_wlan, 1);
6266 MODULE_DEPEND(linuxkpi_wlan, linuxkpi, 1, 1, 1);
6267 MODULE_DEPEND(linuxkpi_wlan, wlan, 1, 1, 1);
6268