1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2007 - 2012 Realtek Corporation. */
3
4 #define _RTW_XMIT_C_
5
6 #include "../include/osdep_service.h"
7 #include "../include/drv_types.h"
8 #include "../include/wifi.h"
9 #include "../include/osdep_intf.h"
10 #include "../include/usb_ops.h"
11 #include "../include/usb_osintf.h"
12
13 static u8 P802_1H_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0xf8 };
14 static u8 RFC1042_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0x00 };
15
_init_txservq(struct tx_servq * ptxservq)16 static void _init_txservq(struct tx_servq *ptxservq)
17 {
18
19 INIT_LIST_HEAD(&ptxservq->tx_pending);
20 _rtw_init_queue(&ptxservq->sta_pending);
21 ptxservq->qcnt = 0;
22
23 }
24
_rtw_init_sta_xmit_priv(struct sta_xmit_priv * psta_xmitpriv)25 void _rtw_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv)
26 {
27
28 memset((unsigned char *)psta_xmitpriv, 0, sizeof(struct sta_xmit_priv));
29 spin_lock_init(&psta_xmitpriv->lock);
30 _init_txservq(&psta_xmitpriv->be_q);
31 _init_txservq(&psta_xmitpriv->bk_q);
32 _init_txservq(&psta_xmitpriv->vi_q);
33 _init_txservq(&psta_xmitpriv->vo_q);
34 INIT_LIST_HEAD(&psta_xmitpriv->legacy_dz);
35 INIT_LIST_HEAD(&psta_xmitpriv->apsd);
36
37 }
38
_rtw_init_xmit_priv(struct xmit_priv * pxmitpriv,struct adapter * padapter)39 s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter)
40 {
41 int i;
42 struct xmit_buf *pxmitbuf;
43 struct xmit_frame *pxframe;
44 int res = _SUCCESS;
45 u32 max_xmit_extbuf_size = MAX_XMIT_EXTBUF_SZ;
46 u32 num_xmit_extbuf = NR_XMIT_EXTBUFF;
47
48 /* We don't need to memset padapter->XXX to zero, because adapter is allocated by vzalloc(). */
49
50 spin_lock_init(&pxmitpriv->lock);
51 sema_init(&pxmitpriv->xmit_sema, 0);
52 sema_init(&pxmitpriv->terminate_xmitthread_sema, 0);
53
54 /*
55 Please insert all the queue initializaiton using _rtw_init_queue below
56 */
57
58 pxmitpriv->adapter = padapter;
59
60 _rtw_init_queue(&pxmitpriv->be_pending);
61 _rtw_init_queue(&pxmitpriv->bk_pending);
62 _rtw_init_queue(&pxmitpriv->vi_pending);
63 _rtw_init_queue(&pxmitpriv->vo_pending);
64 _rtw_init_queue(&pxmitpriv->bm_pending);
65
66 _rtw_init_queue(&pxmitpriv->free_xmit_queue);
67
68 /*
69 Please allocate memory with the sz = (struct xmit_frame) * NR_XMITFRAME,
70 and initialize free_xmit_frame below.
71 Please also apply free_txobj to link_up all the xmit_frames...
72 */
73
74 pxmitpriv->pallocated_frame_buf = vzalloc(NR_XMITFRAME * sizeof(struct xmit_frame) + 4);
75
76 if (!pxmitpriv->pallocated_frame_buf) {
77 pxmitpriv->pxmit_frame_buf = NULL;
78 res = _FAIL;
79 goto exit;
80 }
81 pxmitpriv->pxmit_frame_buf = (u8 *)N_BYTE_ALIGMENT((size_t)(pxmitpriv->pallocated_frame_buf), 4);
82 /* pxmitpriv->pxmit_frame_buf = pxmitpriv->pallocated_frame_buf + 4 - */
83 /* ((size_t) (pxmitpriv->pallocated_frame_buf) &3); */
84
85 pxframe = (struct xmit_frame *)pxmitpriv->pxmit_frame_buf;
86
87 for (i = 0; i < NR_XMITFRAME; i++) {
88 INIT_LIST_HEAD(&pxframe->list);
89
90 pxframe->padapter = padapter;
91 pxframe->frame_tag = NULL_FRAMETAG;
92
93 pxframe->pkt = NULL;
94
95 pxframe->buf_addr = NULL;
96 pxframe->pxmitbuf = NULL;
97
98 list_add_tail(&pxframe->list, &pxmitpriv->free_xmit_queue.queue);
99
100 pxframe++;
101 }
102
103 pxmitpriv->free_xmitframe_cnt = NR_XMITFRAME;
104
105 pxmitpriv->frag_len = MAX_FRAG_THRESHOLD;
106
107 /* init xmit_buf */
108 _rtw_init_queue(&pxmitpriv->free_xmitbuf_queue);
109 _rtw_init_queue(&pxmitpriv->pending_xmitbuf_queue);
110
111 pxmitpriv->pallocated_xmitbuf = vzalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4);
112
113 if (!pxmitpriv->pallocated_xmitbuf) {
114 res = _FAIL;
115 goto exit;
116 }
117
118 pxmitpriv->pxmitbuf = (u8 *)N_BYTE_ALIGMENT((size_t)(pxmitpriv->pallocated_xmitbuf), 4);
119 /* pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 - */
120 /* ((size_t) (pxmitpriv->pallocated_xmitbuf) &3); */
121
122 pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
123
124 for (i = 0; i < NR_XMITBUFF; i++) {
125 INIT_LIST_HEAD(&pxmitbuf->list);
126
127 pxmitbuf->priv_data = NULL;
128 pxmitbuf->padapter = padapter;
129 pxmitbuf->ext_tag = false;
130
131 /* Tx buf allocation may fail sometimes, so sleep and retry. */
132 res = rtw_os_xmit_resource_alloc(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ));
133 if (res == _FAIL) {
134 msleep(10);
135 res = rtw_os_xmit_resource_alloc(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ));
136 if (res == _FAIL) {
137 goto exit;
138 }
139 }
140
141 pxmitbuf->flags = XMIT_VO_QUEUE;
142
143 list_add_tail(&pxmitbuf->list, &pxmitpriv->free_xmitbuf_queue.queue);
144 pxmitbuf++;
145 }
146
147 pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF;
148
149 /* Init xmit extension buff */
150 _rtw_init_queue(&pxmitpriv->free_xmit_extbuf_queue);
151
152 pxmitpriv->pallocated_xmit_extbuf = vzalloc(num_xmit_extbuf * sizeof(struct xmit_buf) + 4);
153
154 if (!pxmitpriv->pallocated_xmit_extbuf) {
155 res = _FAIL;
156 goto exit;
157 }
158
159 pxmitpriv->pxmit_extbuf = (u8 *)N_BYTE_ALIGMENT((size_t)(pxmitpriv->pallocated_xmit_extbuf), 4);
160
161 pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmit_extbuf;
162
163 for (i = 0; i < num_xmit_extbuf; i++) {
164 INIT_LIST_HEAD(&pxmitbuf->list);
165
166 pxmitbuf->priv_data = NULL;
167 pxmitbuf->padapter = padapter;
168 pxmitbuf->ext_tag = true;
169
170 res = rtw_os_xmit_resource_alloc(padapter, pxmitbuf, max_xmit_extbuf_size + XMITBUF_ALIGN_SZ);
171 if (res == _FAIL) {
172 res = _FAIL;
173 goto exit;
174 }
175
176 list_add_tail(&pxmitbuf->list, &pxmitpriv->free_xmit_extbuf_queue.queue);
177 pxmitbuf++;
178 }
179
180 pxmitpriv->free_xmit_extbuf_cnt = num_xmit_extbuf;
181
182 rtw_alloc_hwxmits(padapter);
183 rtw_init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
184
185 for (i = 0; i < 4; i++)
186 pxmitpriv->wmm_para_seq[i] = i;
187
188 pxmitpriv->txirp_cnt = 1;
189
190 sema_init(&pxmitpriv->tx_retevt, 0);
191
192 /* per AC pending irp */
193 pxmitpriv->beq_cnt = 0;
194 pxmitpriv->bkq_cnt = 0;
195 pxmitpriv->viq_cnt = 0;
196 pxmitpriv->voq_cnt = 0;
197
198 pxmitpriv->ack_tx = false;
199 _rtw_mutex_init(&pxmitpriv->ack_tx_mutex);
200 rtw_sctx_init(&pxmitpriv->ack_tx_ops, 0);
201
202 rtw_hal_init_xmit_priv(padapter);
203
204 exit:
205
206 return res;
207 }
208
_rtw_free_xmit_priv(struct xmit_priv * pxmitpriv)209 void _rtw_free_xmit_priv(struct xmit_priv *pxmitpriv)
210 {
211 int i;
212 struct adapter *padapter = pxmitpriv->adapter;
213 struct xmit_frame *pxmitframe = (struct xmit_frame *)pxmitpriv->pxmit_frame_buf;
214 struct xmit_buf *pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
215 u32 max_xmit_extbuf_size = MAX_XMIT_EXTBUF_SZ;
216 u32 num_xmit_extbuf = NR_XMIT_EXTBUFF;
217
218 if (!pxmitpriv->pxmit_frame_buf)
219 return;
220
221 for (i = 0; i < NR_XMITFRAME; i++) {
222 rtw_os_xmit_complete(padapter, pxmitframe);
223
224 pxmitframe++;
225 }
226
227 for (i = 0; i < NR_XMITBUFF; i++) {
228 rtw_os_xmit_resource_free(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ));
229 pxmitbuf++;
230 }
231
232 vfree(pxmitpriv->pallocated_frame_buf);
233
234 vfree(pxmitpriv->pallocated_xmitbuf);
235
236 pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmit_extbuf;
237 for (i = 0; i < num_xmit_extbuf; i++) {
238 rtw_os_xmit_resource_free(padapter, pxmitbuf, (max_xmit_extbuf_size + XMITBUF_ALIGN_SZ));
239 pxmitbuf++;
240 }
241
242 vfree(pxmitpriv->pallocated_xmit_extbuf);
243
244 rtw_free_hwxmits(padapter);
245
246 _rtw_mutex_free(&pxmitpriv->ack_tx_mutex);
247 }
248
update_attrib_vcs_info(struct adapter * padapter,struct xmit_frame * pxmitframe)249 static void update_attrib_vcs_info(struct adapter *padapter, struct xmit_frame *pxmitframe)
250 {
251 u32 sz;
252 struct pkt_attrib *pattrib = &pxmitframe->attrib;
253 struct sta_info *psta = pattrib->psta;
254 struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
255 struct mlme_ext_info *pmlmeinfo = &pmlmeext->mlmext_info;
256
257 if (pattrib->nr_frags != 1)
258 sz = padapter->xmitpriv.frag_len;
259 else /* no frag */
260 sz = pattrib->last_txcmdsz;
261
262 /* (1) RTS_Threshold is compared to the MPDU, not MSDU. */
263 /* (2) If there are more than one frag in this MSDU, only the first frag uses protection frame. */
264 /* Other fragments are protected by previous fragment. */
265 /* So we only need to check the length of first fragment. */
266 if (pmlmeext->cur_wireless_mode < WIRELESS_11_24N || padapter->registrypriv.wifi_spec) {
267 if (sz > padapter->registrypriv.rts_thresh) {
268 pattrib->vcs_mode = RTS_CTS;
269 } else {
270 if (psta->rtsen)
271 pattrib->vcs_mode = RTS_CTS;
272 else if (psta->cts2self)
273 pattrib->vcs_mode = CTS_TO_SELF;
274 else
275 pattrib->vcs_mode = NONE_VCS;
276 }
277 } else {
278 while (true) {
279 /* IOT action */
280 if ((pmlmeinfo->assoc_AP_vendor == HT_IOT_PEER_ATHEROS) && pattrib->ampdu_en &&
281 (padapter->securitypriv.dot11PrivacyAlgrthm == _AES_)) {
282 pattrib->vcs_mode = CTS_TO_SELF;
283 break;
284 }
285
286 /* check ERP protection */
287 if (psta->rtsen || psta->cts2self) {
288 if (psta->rtsen)
289 pattrib->vcs_mode = RTS_CTS;
290 else if (psta->cts2self)
291 pattrib->vcs_mode = CTS_TO_SELF;
292
293 break;
294 }
295
296 /* check HT op mode */
297 if (pattrib->ht_en) {
298 u8 htopmode = pmlmeinfo->HT_protection;
299 if ((pmlmeext->cur_bwmode && (htopmode == 2 || htopmode == 3)) ||
300 (!pmlmeext->cur_bwmode && htopmode == 3)) {
301 pattrib->vcs_mode = RTS_CTS;
302 break;
303 }
304 }
305
306 /* check rts */
307 if (sz > padapter->registrypriv.rts_thresh) {
308 pattrib->vcs_mode = RTS_CTS;
309 break;
310 }
311
312 /* to do list: check MIMO power save condition. */
313
314 /* check AMPDU aggregation for TXOP */
315 if (pattrib->ampdu_en) {
316 pattrib->vcs_mode = RTS_CTS;
317 break;
318 }
319
320 pattrib->vcs_mode = NONE_VCS;
321 break;
322 }
323 }
324 }
325
update_attrib_phy_info(struct pkt_attrib * pattrib,struct sta_info * psta)326 static void update_attrib_phy_info(struct pkt_attrib *pattrib, struct sta_info *psta)
327 {
328 /*if (psta->rtsen)
329 pattrib->vcs_mode = RTS_CTS;
330 else if (psta->cts2self)
331 pattrib->vcs_mode = CTS_TO_SELF;
332 else
333 pattrib->vcs_mode = NONE_VCS;*/
334
335 pattrib->mdata = 0;
336 pattrib->eosp = 0;
337 pattrib->triggered = 0;
338
339 /* qos_en, ht_en, init rate, , bw, ch_offset, sgi */
340 pattrib->qos_en = psta->qos_option;
341
342 pattrib->raid = psta->raid;
343 pattrib->ht_en = psta->htpriv.ht_option;
344 pattrib->bwmode = psta->htpriv.bwmode;
345 pattrib->ch_offset = psta->htpriv.ch_offset;
346 pattrib->sgi = psta->htpriv.sgi;
347 pattrib->ampdu_en = false;
348 pattrib->retry_ctrl = false;
349 }
350
qos_acm(u8 acm_mask,u8 priority)351 u8 qos_acm(u8 acm_mask, u8 priority)
352 {
353 u8 change_priority = priority;
354
355 switch (priority) {
356 case 0:
357 case 3:
358 if (acm_mask & BIT(1))
359 change_priority = 1;
360 break;
361 case 1:
362 case 2:
363 break;
364 case 4:
365 case 5:
366 if (acm_mask & BIT(2))
367 change_priority = 0;
368 break;
369 case 6:
370 case 7:
371 if (acm_mask & BIT(3))
372 change_priority = 5;
373 break;
374 default:
375 DBG_88E("qos_acm(): invalid pattrib->priority: %d!!!\n", priority);
376 break;
377 }
378
379 return change_priority;
380 }
381
set_qos(struct pkt_file * ppktfile,struct pkt_attrib * pattrib)382 static void set_qos(struct pkt_file *ppktfile, struct pkt_attrib *pattrib)
383 {
384 struct ethhdr etherhdr;
385 struct iphdr ip_hdr;
386 s32 user_prio = 0;
387
388 _rtw_open_pktfile(ppktfile->pkt, ppktfile);
389 _rtw_pktfile_read(ppktfile, (unsigned char *)ðerhdr, ETH_HLEN);
390
391 /* get user_prio from IP hdr */
392 if (pattrib->ether_type == 0x0800) {
393 _rtw_pktfile_read(ppktfile, (u8 *)&ip_hdr, sizeof(ip_hdr));
394 /* user_prio = (ntohs(ip_hdr.tos) >> 5) & 0x3; */
395 user_prio = ip_hdr.tos >> 5;
396 } else if (pattrib->ether_type == 0x888e) {
397 /* "When priority processing of data frames is supported, */
398 /* a STA's SME should send EAPOL-Key frames at the highest priority." */
399 user_prio = 7;
400 }
401
402 pattrib->priority = user_prio;
403 pattrib->hdrlen = WLAN_HDR_A3_QOS_LEN;
404 pattrib->subtype = WIFI_QOS_DATA_TYPE;
405 }
406
update_attrib(struct adapter * padapter,struct sk_buff * pkt,struct pkt_attrib * pattrib)407 static s32 update_attrib(struct adapter *padapter, struct sk_buff *pkt, struct pkt_attrib *pattrib)
408 {
409 struct pkt_file pktfile;
410 struct sta_info *psta = NULL;
411 struct ethhdr etherhdr;
412
413 bool bmcast;
414 struct sta_priv *pstapriv = &padapter->stapriv;
415 struct security_priv *psecuritypriv = &padapter->securitypriv;
416 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
417 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
418 int res = _SUCCESS;
419
420
421
422 _rtw_open_pktfile(pkt, &pktfile);
423 _rtw_pktfile_read(&pktfile, (u8 *)ðerhdr, ETH_HLEN);
424
425 pattrib->ether_type = ntohs(etherhdr.h_proto);
426
427 memcpy(pattrib->dst, ðerhdr.h_dest, ETH_ALEN);
428 memcpy(pattrib->src, ðerhdr.h_source, ETH_ALEN);
429
430 pattrib->pctrl = 0;
431
432 if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) ||
433 check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) {
434 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
435 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
436 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
437 memcpy(pattrib->ra, get_bssid(pmlmepriv), ETH_ALEN);
438 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
439 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
440 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
441 memcpy(pattrib->ta, get_bssid(pmlmepriv), ETH_ALEN);
442 }
443
444 pattrib->pktlen = pktfile.pkt_len;
445
446 if (ETH_P_IP == pattrib->ether_type) {
447 /* The following is for DHCP and ARP packet, we use cck1M to tx these packets and let LPS awake some time */
448 /* to prevent DHCP protocol fail */
449 u8 tmp[24];
450 _rtw_pktfile_read(&pktfile, &tmp[0], 24);
451 pattrib->dhcp_pkt = 0;
452 if (pktfile.pkt_len > 282) {/* MINIMUM_DHCP_PACKET_SIZE) { */
453 if (ETH_P_IP == pattrib->ether_type) {/* IP header */
454 if (((tmp[21] == 68) && (tmp[23] == 67)) ||
455 ((tmp[21] == 67) && (tmp[23] == 68))) {
456 /* 68 : UDP BOOTP client */
457 /* 67 : UDP BOOTP server */
458 /* Use low rate to send DHCP packet. */
459 pattrib->dhcp_pkt = 1;
460 }
461 }
462 }
463 } else if (0x888e == pattrib->ether_type) {
464 DBG_88E_LEVEL(_drv_info_, "send eapol packet\n");
465 }
466
467 if ((pattrib->ether_type == 0x888e) || (pattrib->dhcp_pkt == 1))
468 rtw_set_scan_deny(padapter, 3000);
469
470 /* If EAPOL , ARP , OR DHCP packet, driver must be in active mode. */
471 if ((pattrib->ether_type == 0x0806) || (pattrib->ether_type == 0x888e) || (pattrib->dhcp_pkt == 1))
472 rtw_lps_ctrl_wk_cmd(padapter, LPS_CTRL_SPECIAL_PACKET, 1);
473
474 bmcast = is_multicast_ether_addr(pattrib->ra);
475
476 /* get sta_info */
477 if (bmcast) {
478 psta = rtw_get_bcmc_stainfo(padapter);
479 } else {
480 psta = rtw_get_stainfo(pstapriv, pattrib->ra);
481 if (!psta) { /* if we cannot get psta => drrp the pkt */
482 res = _FAIL;
483 goto exit;
484 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) && !(psta->state & _FW_LINKED)) {
485 res = _FAIL;
486 goto exit;
487 }
488 }
489
490 if (psta) {
491 pattrib->mac_id = psta->mac_id;
492 /* DBG_88E("%s ==> mac_id(%d)\n", __func__, pattrib->mac_id); */
493 pattrib->psta = psta;
494 } else {
495 /* if we cannot get psta => drop the pkt */
496 res = _FAIL;
497 goto exit;
498 }
499
500 pattrib->ack_policy = 0;
501 /* get ether_hdr_len */
502 pattrib->pkt_hdrlen = ETH_HLEN;/* pattrib->ether_type == 0x8100) ? (14 + 4): 14; vlan tag */
503
504 pattrib->hdrlen = WLAN_HDR_A3_LEN;
505 pattrib->subtype = WIFI_DATA_TYPE;
506 pattrib->priority = 0;
507
508 if (check_fwstate(pmlmepriv, WIFI_AP_STATE | WIFI_ADHOC_STATE | WIFI_ADHOC_MASTER_STATE)) {
509 if (psta->qos_option)
510 set_qos(&pktfile, pattrib);
511 } else {
512 if (pqospriv->qos_option) {
513 set_qos(&pktfile, pattrib);
514
515 if (pmlmepriv->acm_mask != 0)
516 pattrib->priority = qos_acm(pmlmepriv->acm_mask, pattrib->priority);
517 }
518 }
519
520 if (psta->ieee8021x_blocked) {
521 pattrib->encrypt = 0;
522
523 if ((pattrib->ether_type != 0x888e) && !check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
524 res = _FAIL;
525 goto exit;
526 }
527 } else {
528 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast);
529
530 switch (psecuritypriv->dot11AuthAlgrthm) {
531 case dot11AuthAlgrthm_Open:
532 case dot11AuthAlgrthm_Shared:
533 case dot11AuthAlgrthm_Auto:
534 pattrib->key_idx = (u8)psecuritypriv->dot11PrivacyKeyIndex;
535 break;
536 case dot11AuthAlgrthm_8021X:
537 if (bmcast)
538 pattrib->key_idx = (u8)psecuritypriv->dot118021XGrpKeyid;
539 else
540 pattrib->key_idx = 0;
541 break;
542 default:
543 pattrib->key_idx = 0;
544 break;
545 }
546 }
547
548 switch (pattrib->encrypt) {
549 case _WEP40_:
550 case _WEP104_:
551 pattrib->iv_len = 4;
552 pattrib->icv_len = 4;
553 break;
554 case _TKIP_:
555 pattrib->iv_len = 8;
556 pattrib->icv_len = 4;
557
558 if (padapter->securitypriv.busetkipkey == _FAIL) {
559 res = _FAIL;
560 goto exit;
561 }
562 break;
563 case _AES_:
564 pattrib->iv_len = 8;
565 pattrib->icv_len = 8;
566 break;
567 default:
568 pattrib->iv_len = 0;
569 pattrib->icv_len = 0;
570 break;
571 }
572
573 if (pattrib->encrypt &&
574 (padapter->securitypriv.sw_encrypt || !psecuritypriv->hw_decrypted))
575 pattrib->bswenc = true;
576 else
577 pattrib->bswenc = false;
578
579 rtw_set_tx_chksum_offload(pkt, pattrib);
580
581 update_attrib_phy_info(pattrib, psta);
582
583 exit:
584
585 return res;
586 }
587
xmitframe_addmic(struct adapter * padapter,struct xmit_frame * pxmitframe)588 static s32 xmitframe_addmic(struct adapter *padapter, struct xmit_frame *pxmitframe)
589 {
590 int curfragnum, length;
591 u8 *pframe, *payload, mic[8];
592 struct mic_data micdata;
593 struct sta_info *stainfo;
594 struct pkt_attrib *pattrib = &pxmitframe->attrib;
595 struct security_priv *psecuritypriv = &padapter->securitypriv;
596 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
597 u8 priority[4] = {0x0, 0x0, 0x0, 0x0};
598 u8 hw_hdr_offset = 0;
599
600 if (pattrib->psta)
601 stainfo = pattrib->psta;
602 else
603 stainfo = rtw_get_stainfo(&padapter->stapriv, &pattrib->ra[0]);
604
605 hw_hdr_offset = TXDESC_SIZE + (pxmitframe->pkt_offset * PACKET_OFFSET_SZ);
606
607 if (pattrib->encrypt == _TKIP_) {/* if (psecuritypriv->dot11PrivacyAlgrthm == _TKIP_PRIVACY_) */
608 /* encode mic code */
609 if (stainfo) {
610 u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
611 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
612 0x0, 0x0};
613
614 pframe = pxmitframe->buf_addr + hw_hdr_offset;
615
616 if (is_multicast_ether_addr(pattrib->ra)) {
617 if (!memcmp(psecuritypriv->dot118021XGrptxmickey[psecuritypriv->dot118021XGrpKeyid].skey, null_key, 16))
618 return _FAIL;
619 /* start to calculate the mic code */
620 rtw_secmicsetkey(&micdata, psecuritypriv->dot118021XGrptxmickey[psecuritypriv->dot118021XGrpKeyid].skey);
621 } else {
622 if (!memcmp(&stainfo->dot11tkiptxmickey.skey[0], null_key, 16)) {
623 /* msleep(10); */
624 return _FAIL;
625 }
626 /* start to calculate the mic code */
627 rtw_secmicsetkey(&micdata, &stainfo->dot11tkiptxmickey.skey[0]);
628 }
629
630 if (pframe[1] & 1) { /* ToDS == 1 */
631 rtw_secmicappend(&micdata, &pframe[16], 6); /* DA */
632 if (pframe[1] & 2) /* From Ds == 1 */
633 rtw_secmicappend(&micdata, &pframe[24], 6);
634 else
635 rtw_secmicappend(&micdata, &pframe[10], 6);
636 } else { /* ToDS == 0 */
637 rtw_secmicappend(&micdata, &pframe[4], 6); /* DA */
638 if (pframe[1] & 2) /* From Ds == 1 */
639 rtw_secmicappend(&micdata, &pframe[16], 6);
640 else
641 rtw_secmicappend(&micdata, &pframe[10], 6);
642 }
643
644 if (pattrib->qos_en)
645 priority[0] = (u8)pxmitframe->attrib.priority;
646
647 rtw_secmicappend(&micdata, &priority[0], 4);
648
649 payload = pframe;
650
651 for (curfragnum = 0; curfragnum < pattrib->nr_frags; curfragnum++) {
652 payload = (u8 *)RND4((size_t)(payload));
653
654 payload = payload + pattrib->hdrlen + pattrib->iv_len;
655 if ((curfragnum + 1) == pattrib->nr_frags) {
656 length = pattrib->last_txcmdsz - pattrib->hdrlen - pattrib->iv_len - ((pattrib->bswenc) ? pattrib->icv_len : 0);
657 rtw_secmicappend(&micdata, payload, length);
658 payload = payload + length;
659 } else {
660 length = pxmitpriv->frag_len - pattrib->hdrlen - pattrib->iv_len - ((pattrib->bswenc) ? pattrib->icv_len : 0);
661 rtw_secmicappend(&micdata, payload, length);
662 payload = payload + length + pattrib->icv_len;
663 }
664 }
665 rtw_secgetmic(&micdata, &mic[0]);
666 /* add mic code and add the mic code length in last_txcmdsz */
667
668 memcpy(payload, &mic[0], 8);
669 pattrib->last_txcmdsz += 8;
670
671 payload = payload - pattrib->last_txcmdsz + 8;
672 }
673 }
674
675 return _SUCCESS;
676 }
677
xmitframe_swencrypt(struct adapter * padapter,struct xmit_frame * pxmitframe)678 static s32 xmitframe_swencrypt(struct adapter *padapter, struct xmit_frame *pxmitframe)
679 {
680 struct pkt_attrib *pattrib = &pxmitframe->attrib;
681
682 if (pattrib->bswenc) {
683 switch (pattrib->encrypt) {
684 case _WEP40_:
685 case _WEP104_:
686 rtw_wep_encrypt(padapter, (u8 *)pxmitframe);
687 break;
688 case _TKIP_:
689 rtw_tkip_encrypt(padapter, (u8 *)pxmitframe);
690 break;
691 case _AES_:
692 rtw_aes_encrypt(padapter, (u8 *)pxmitframe);
693 break;
694 default:
695 break;
696 }
697 }
698
699 return _SUCCESS;
700 }
701
rtw_make_wlanhdr(struct adapter * padapter,u8 * hdr,struct pkt_attrib * pattrib)702 s32 rtw_make_wlanhdr(struct adapter *padapter, u8 *hdr, struct pkt_attrib *pattrib)
703 {
704 u16 *qc;
705
706 struct rtw_ieee80211_hdr *pwlanhdr = (struct rtw_ieee80211_hdr *)hdr;
707 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
708 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
709 u8 qos_option = false;
710
711 int res = _SUCCESS;
712 __le16 *fctrl = &pwlanhdr->frame_ctl;
713
714 struct sta_info *psta;
715
716 if (pattrib->psta) {
717 psta = pattrib->psta;
718 } else {
719 if (is_multicast_ether_addr(pattrib->ra)) {
720 psta = rtw_get_bcmc_stainfo(padapter);
721 } else {
722 psta = rtw_get_stainfo(&padapter->stapriv, pattrib->ra);
723 }
724 }
725
726 memset(hdr, 0, WLANHDR_OFFSET);
727
728 SetFrameSubType(fctrl, pattrib->subtype);
729
730 if (pattrib->subtype & WIFI_DATA_TYPE) {
731 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
732 /* to_ds = 1, fr_ds = 0; */
733 /* Data transfer to AP */
734 SetToDs(fctrl);
735 memcpy(pwlanhdr->addr1, get_bssid(pmlmepriv), ETH_ALEN);
736 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
737 memcpy(pwlanhdr->addr3, pattrib->dst, ETH_ALEN);
738
739 if (pqospriv->qos_option)
740 qos_option = true;
741 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
742 /* to_ds = 0, fr_ds = 1; */
743 SetFrDs(fctrl);
744 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
745 memcpy(pwlanhdr->addr2, get_bssid(pmlmepriv), ETH_ALEN);
746 memcpy(pwlanhdr->addr3, pattrib->src, ETH_ALEN);
747
748 if (psta->qos_option)
749 qos_option = true;
750 } else if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) ||
751 check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) {
752 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
753 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
754 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv), ETH_ALEN);
755
756 if (psta->qos_option)
757 qos_option = true;
758 } else {
759 res = _FAIL;
760 goto exit;
761 }
762
763 if (pattrib->mdata)
764 SetMData(fctrl);
765
766 if (pattrib->encrypt)
767 SetPrivacy(fctrl);
768
769 if (qos_option) {
770 qc = (unsigned short *)(hdr + pattrib->hdrlen - 2);
771
772 if (pattrib->priority)
773 SetPriority(qc, pattrib->priority);
774
775 SetEOSP(qc, pattrib->eosp);
776
777 SetAckpolicy(qc, pattrib->ack_policy);
778 }
779
780 /* TODO: fill HT Control Field */
781
782 /* Update Seq Num will be handled by f/w */
783 if (psta) {
784 psta->sta_xmitpriv.txseq_tid[pattrib->priority]++;
785 psta->sta_xmitpriv.txseq_tid[pattrib->priority] &= 0xFFF;
786
787 pattrib->seqnum = psta->sta_xmitpriv.txseq_tid[pattrib->priority];
788
789 SetSeqNum(hdr, pattrib->seqnum);
790
791 /* check if enable ampdu */
792 if (pattrib->ht_en && psta->htpriv.ampdu_enable) {
793 if (psta->htpriv.agg_enable_bitmap & BIT(pattrib->priority))
794 pattrib->ampdu_en = true;
795 }
796
797 /* re-check if enable ampdu by BA_starting_seqctrl */
798 if (pattrib->ampdu_en) {
799 u16 tx_seq;
800
801 tx_seq = psta->BA_starting_seqctrl[pattrib->priority & 0x0f];
802
803 /* check BA_starting_seqctrl */
804 if (SN_LESS(pattrib->seqnum, tx_seq)) {
805 pattrib->ampdu_en = false;/* AGG BK */
806 } else if (SN_EQUAL(pattrib->seqnum, tx_seq)) {
807 psta->BA_starting_seqctrl[pattrib->priority & 0x0f] = (tx_seq + 1) & 0xfff;
808
809 pattrib->ampdu_en = true;/* AGG EN */
810 } else {
811 psta->BA_starting_seqctrl[pattrib->priority & 0x0f] = (pattrib->seqnum + 1) & 0xfff;
812 pattrib->ampdu_en = true;/* AGG EN */
813 }
814 }
815 }
816 }
817 exit:
818
819 return res;
820 }
821
rtw_txframes_pending(struct adapter * padapter)822 s32 rtw_txframes_pending(struct adapter *padapter)
823 {
824 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
825
826 return (!list_empty(&pxmitpriv->be_pending.queue) ||
827 !list_empty(&pxmitpriv->bk_pending.queue) ||
828 !list_empty(&pxmitpriv->vi_pending.queue) ||
829 !list_empty(&pxmitpriv->vo_pending.queue));
830 }
831
rtw_txframes_sta_ac_pending(struct adapter * padapter,struct pkt_attrib * pattrib)832 s32 rtw_txframes_sta_ac_pending(struct adapter *padapter, struct pkt_attrib *pattrib)
833 {
834 struct sta_info *psta;
835 struct tx_servq *ptxservq;
836 int priority = pattrib->priority;
837
838 psta = pattrib->psta;
839
840 switch (priority) {
841 case 1:
842 case 2:
843 ptxservq = &psta->sta_xmitpriv.bk_q;
844 break;
845 case 4:
846 case 5:
847 ptxservq = &psta->sta_xmitpriv.vi_q;
848 break;
849 case 6:
850 case 7:
851 ptxservq = &psta->sta_xmitpriv.vo_q;
852 break;
853 case 0:
854 case 3:
855 default:
856 ptxservq = &psta->sta_xmitpriv.be_q;
857 break;
858 }
859
860 if (ptxservq)
861 return ptxservq->qcnt;
862 return 0;
863 }
864
865 /*
866 * Calculate wlan 802.11 packet MAX size from pkt_attrib
867 * This function doesn't consider fragment case
868 */
rtw_calculate_wlan_pkt_size_by_attribue(struct pkt_attrib * pattrib)869 u32 rtw_calculate_wlan_pkt_size_by_attribue(struct pkt_attrib *pattrib)
870 {
871 u32 len = 0;
872
873 len = pattrib->hdrlen + pattrib->iv_len; /* WLAN Header and IV */
874 len += SNAP_SIZE + sizeof(u16); /* LLC */
875 len += pattrib->pktlen;
876 if (pattrib->encrypt == _TKIP_)
877 len += 8; /* MIC */
878 len += ((pattrib->bswenc) ? pattrib->icv_len : 0); /* ICV */
879
880 return len;
881 }
882
883 /*
884
885 This sub-routine will perform all the following:
886
887 1. remove 802.3 header.
888 2. create wlan_header, based on the info in pxmitframe
889 3. append sta's iv/ext-iv
890 4. append LLC
891 5. move frag chunk from pframe to pxmitframe->mem
892 6. apply sw-encrypt, if necessary.
893
894 */
rtw_xmitframe_coalesce(struct adapter * padapter,struct sk_buff * pkt,struct xmit_frame * pxmitframe)895 s32 rtw_xmitframe_coalesce(struct adapter *padapter, struct sk_buff *pkt, struct xmit_frame *pxmitframe)
896 {
897 struct pkt_file pktfile;
898 s32 frg_inx, frg_len, mpdu_len, llc_sz, mem_sz;
899 size_t addr;
900 u8 *pframe, *mem_start;
901 u8 hw_hdr_offset;
902 struct sta_info *psta;
903 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
904 struct pkt_attrib *pattrib = &pxmitframe->attrib;
905 u8 *pbuf_start;
906 bool bmcst = is_multicast_ether_addr(pattrib->ra);
907 s32 res = _SUCCESS;
908
909 if (!pkt)
910 return _FAIL;
911
912 psta = rtw_get_stainfo(&padapter->stapriv, pattrib->ra);
913
914 if (!psta)
915 return _FAIL;
916
917 if (!pxmitframe->buf_addr) {
918 DBG_88E("==> %s buf_addr == NULL\n", __func__);
919 return _FAIL;
920 }
921
922 pbuf_start = pxmitframe->buf_addr;
923
924 hw_hdr_offset = TXDESC_SIZE + (pxmitframe->pkt_offset * PACKET_OFFSET_SZ);
925
926 mem_start = pbuf_start + hw_hdr_offset;
927
928 if (rtw_make_wlanhdr(padapter, mem_start, pattrib) == _FAIL) {
929 DBG_88E("rtw_xmitframe_coalesce: rtw_make_wlanhdr fail; drop pkt\n");
930 res = _FAIL;
931 goto exit;
932 }
933
934 _rtw_open_pktfile(pkt, &pktfile);
935 _rtw_pktfile_read(&pktfile, NULL, pattrib->pkt_hdrlen);
936
937 frg_inx = 0;
938 frg_len = pxmitpriv->frag_len - 4;/* 2346-4 = 2342 */
939
940 while (1) {
941 llc_sz = 0;
942
943 mpdu_len = frg_len;
944
945 pframe = mem_start;
946
947 SetMFrag(mem_start);
948
949 pframe += pattrib->hdrlen;
950 mpdu_len -= pattrib->hdrlen;
951
952 /* adding icv, if necessary... */
953 if (pattrib->iv_len) {
954 if (psta) {
955 switch (pattrib->encrypt) {
956 case _WEP40_:
957 case _WEP104_:
958 WEP_IV(pattrib->iv, psta->dot11txpn, pattrib->key_idx);
959 break;
960 case _TKIP_:
961 if (bmcst)
962 TKIP_IV(pattrib->iv, psta->dot11txpn, pattrib->key_idx);
963 else
964 TKIP_IV(pattrib->iv, psta->dot11txpn, 0);
965 break;
966 case _AES_:
967 if (bmcst)
968 AES_IV(pattrib->iv, psta->dot11txpn, pattrib->key_idx);
969 else
970 AES_IV(pattrib->iv, psta->dot11txpn, 0);
971 break;
972 }
973 }
974
975 memcpy(pframe, pattrib->iv, pattrib->iv_len);
976
977 pframe += pattrib->iv_len;
978
979 mpdu_len -= pattrib->iv_len;
980 }
981
982 if (frg_inx == 0) {
983 llc_sz = rtw_put_snap(pframe, pattrib->ether_type);
984 pframe += llc_sz;
985 mpdu_len -= llc_sz;
986 }
987
988 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) {
989 mpdu_len -= pattrib->icv_len;
990 }
991
992 if (bmcst) {
993 /* don't do fragment to broadcat/multicast packets */
994 mem_sz = _rtw_pktfile_read(&pktfile, pframe, pattrib->pktlen);
995 } else {
996 mem_sz = _rtw_pktfile_read(&pktfile, pframe, mpdu_len);
997 }
998
999 pframe += mem_sz;
1000
1001 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) {
1002 memcpy(pframe, pattrib->icv, pattrib->icv_len);
1003 pframe += pattrib->icv_len;
1004 }
1005
1006 frg_inx++;
1007
1008 if (bmcst || rtw_endofpktfile(&pktfile)) {
1009 pattrib->nr_frags = frg_inx;
1010
1011 pattrib->last_txcmdsz = pattrib->hdrlen + pattrib->iv_len + ((pattrib->nr_frags == 1) ? llc_sz : 0) +
1012 ((pattrib->bswenc) ? pattrib->icv_len : 0) + mem_sz;
1013
1014 ClearMFrag(mem_start);
1015
1016 break;
1017 }
1018
1019 addr = (size_t)(pframe);
1020
1021 mem_start = (unsigned char *)RND4(addr) + hw_hdr_offset;
1022 memcpy(mem_start, pbuf_start + hw_hdr_offset, pattrib->hdrlen);
1023 }
1024
1025 if (xmitframe_addmic(padapter, pxmitframe) == _FAIL) {
1026 DBG_88E("xmitframe_addmic(padapter, pxmitframe) == _FAIL\n");
1027 res = _FAIL;
1028 goto exit;
1029 }
1030
1031 xmitframe_swencrypt(padapter, pxmitframe);
1032
1033 if (!bmcst)
1034 update_attrib_vcs_info(padapter, pxmitframe);
1035 else
1036 pattrib->vcs_mode = NONE_VCS;
1037
1038 exit:
1039
1040 return res;
1041 }
1042
1043 /* Logical Link Control(LLC) SubNetwork Attachment Point(SNAP) header
1044 * IEEE LLC/SNAP header contains 8 octets
1045 * First 3 octets comprise the LLC portion
1046 * SNAP portion, 5 octets, is divided into two fields:
1047 * Organizationally Unique Identifier(OUI), 3 octets,
1048 * type, defined by that organization, 2 octets.
1049 */
rtw_put_snap(u8 * data,u16 h_proto)1050 s32 rtw_put_snap(u8 *data, u16 h_proto)
1051 {
1052 struct ieee80211_snap_hdr *snap;
1053 u8 *oui;
1054
1055 snap = (struct ieee80211_snap_hdr *)data;
1056 snap->dsap = 0xaa;
1057 snap->ssap = 0xaa;
1058 snap->ctrl = 0x03;
1059
1060 if (h_proto == 0x8137 || h_proto == 0x80f3)
1061 oui = P802_1H_OUI;
1062 else
1063 oui = RFC1042_OUI;
1064
1065 snap->oui[0] = oui[0];
1066 snap->oui[1] = oui[1];
1067 snap->oui[2] = oui[2];
1068
1069 *(__be16 *)(data + SNAP_SIZE) = htons(h_proto);
1070
1071 return SNAP_SIZE + sizeof(u16);
1072 }
1073
rtw_update_protection(struct adapter * padapter,u8 * ie,uint ie_len)1074 void rtw_update_protection(struct adapter *padapter, u8 *ie, uint ie_len)
1075 {
1076 uint protection;
1077 u8 *perp;
1078 int erp_len;
1079 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1080 struct registry_priv *pregistrypriv = &padapter->registrypriv;
1081
1082 switch (pxmitpriv->vcs_setting) {
1083 case DISABLE_VCS:
1084 pxmitpriv->vcs = NONE_VCS;
1085 break;
1086 case ENABLE_VCS:
1087 break;
1088 case AUTO_VCS:
1089 default:
1090 perp = rtw_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len);
1091 if (!perp) {
1092 pxmitpriv->vcs = NONE_VCS;
1093 } else {
1094 protection = (*(perp + 2)) & BIT(1);
1095 if (protection) {
1096 if (pregistrypriv->vcs_type == RTS_CTS)
1097 pxmitpriv->vcs = RTS_CTS;
1098 else
1099 pxmitpriv->vcs = CTS_TO_SELF;
1100 } else {
1101 pxmitpriv->vcs = NONE_VCS;
1102 }
1103 }
1104 break;
1105 }
1106
1107 }
1108
rtw_count_tx_stats(struct adapter * padapter,struct xmit_frame * pxmitframe,int sz)1109 void rtw_count_tx_stats(struct adapter *padapter, struct xmit_frame *pxmitframe, int sz)
1110 {
1111 struct sta_info *psta = NULL;
1112 struct stainfo_stats *pstats = NULL;
1113 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1114 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
1115
1116 if ((pxmitframe->frame_tag & 0x0f) == DATA_FRAMETAG) {
1117 pxmitpriv->tx_bytes += sz;
1118 pmlmepriv->LinkDetectInfo.NumTxOkInPeriod += pxmitframe->agg_num;
1119
1120 psta = pxmitframe->attrib.psta;
1121 if (psta) {
1122 pstats = &psta->sta_stats;
1123 pstats->tx_pkts += pxmitframe->agg_num;
1124 pstats->tx_bytes += sz;
1125 }
1126 }
1127 }
1128
rtw_alloc_xmitbuf_ext(struct xmit_priv * pxmitpriv)1129 struct xmit_buf *rtw_alloc_xmitbuf_ext(struct xmit_priv *pxmitpriv)
1130 {
1131 struct xmit_buf *pxmitbuf = NULL;
1132 struct list_head *plist, *phead;
1133 struct __queue *pfree_queue = &pxmitpriv->free_xmit_extbuf_queue;
1134 unsigned long flags;
1135
1136 spin_lock_irqsave(&pfree_queue->lock, flags);
1137
1138 if (list_empty(&pfree_queue->queue)) {
1139 pxmitbuf = NULL;
1140 } else {
1141 phead = get_list_head(pfree_queue);
1142
1143 plist = phead->next;
1144
1145 pxmitbuf = container_of(plist, struct xmit_buf, list);
1146
1147 list_del_init(&pxmitbuf->list);
1148 }
1149
1150 if (pxmitbuf) {
1151 pxmitpriv->free_xmit_extbuf_cnt--;
1152
1153 pxmitbuf->priv_data = NULL;
1154 /* pxmitbuf->ext_tag = true; */
1155
1156 if (pxmitbuf->sctx) {
1157 DBG_88E("%s pxmitbuf->sctx is not NULL\n", __func__);
1158 rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_BUF_ALLOC);
1159 }
1160 }
1161
1162 spin_unlock_irqrestore(&pfree_queue->lock, flags);
1163
1164 return pxmitbuf;
1165 }
1166
rtw_free_xmitbuf_ext(struct xmit_priv * pxmitpriv,struct xmit_buf * pxmitbuf)1167 s32 rtw_free_xmitbuf_ext(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
1168 {
1169 struct __queue *pfree_queue = &pxmitpriv->free_xmit_extbuf_queue;
1170 unsigned long flags;
1171
1172 if (!pxmitbuf)
1173 return _FAIL;
1174
1175 spin_lock_irqsave(&pfree_queue->lock, flags);
1176
1177 list_del_init(&pxmitbuf->list);
1178
1179 list_add_tail(&pxmitbuf->list, get_list_head(pfree_queue));
1180 pxmitpriv->free_xmit_extbuf_cnt++;
1181
1182 spin_unlock_irqrestore(&pfree_queue->lock, flags);
1183
1184 return _SUCCESS;
1185 }
1186
rtw_alloc_xmitbuf(struct xmit_priv * pxmitpriv)1187 struct xmit_buf *rtw_alloc_xmitbuf(struct xmit_priv *pxmitpriv)
1188 {
1189 struct xmit_buf *pxmitbuf = NULL;
1190 struct list_head *plist, *phead;
1191 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
1192 unsigned long flags;
1193
1194 /* DBG_88E("+rtw_alloc_xmitbuf\n"); */
1195
1196 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, flags);
1197
1198 if (list_empty(&pfree_xmitbuf_queue->queue)) {
1199 pxmitbuf = NULL;
1200 } else {
1201 phead = get_list_head(pfree_xmitbuf_queue);
1202
1203 plist = phead->next;
1204
1205 pxmitbuf = container_of(plist, struct xmit_buf, list);
1206
1207 list_del_init(&pxmitbuf->list);
1208 }
1209
1210 if (pxmitbuf) {
1211 pxmitpriv->free_xmitbuf_cnt--;
1212 pxmitbuf->priv_data = NULL;
1213 if (pxmitbuf->sctx) {
1214 DBG_88E("%s pxmitbuf->sctx is not NULL\n", __func__);
1215 rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_BUF_ALLOC);
1216 }
1217 }
1218 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, flags);
1219
1220 return pxmitbuf;
1221 }
1222
rtw_free_xmitbuf(struct xmit_priv * pxmitpriv,struct xmit_buf * pxmitbuf)1223 s32 rtw_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
1224 {
1225 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
1226 unsigned long flags;
1227
1228 if (!pxmitbuf)
1229 return _FAIL;
1230
1231 if (pxmitbuf->sctx) {
1232 DBG_88E("%s pxmitbuf->sctx is not NULL\n", __func__);
1233 rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_BUF_FREE);
1234 }
1235
1236 if (pxmitbuf->ext_tag) {
1237 rtw_free_xmitbuf_ext(pxmitpriv, pxmitbuf);
1238 } else {
1239 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, flags);
1240
1241 list_del_init(&pxmitbuf->list);
1242
1243 list_add_tail(&pxmitbuf->list, get_list_head(pfree_xmitbuf_queue));
1244
1245 pxmitpriv->free_xmitbuf_cnt++;
1246 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, flags);
1247 }
1248
1249 return _SUCCESS;
1250 }
1251
1252 /*
1253 Calling context:
1254 1. OS_TXENTRY
1255 2. RXENTRY (rx_thread or RX_ISR/RX_CallBack)
1256
1257 If we turn on USE_RXTHREAD, then, no need for critical section.
1258 Otherwise, we must use _enter/_exit critical to protect free_xmit_queue...
1259
1260 Must be very very cautious...
1261
1262 */
1263
rtw_alloc_xmitframe(struct xmit_priv * pxmitpriv)1264 struct xmit_frame *rtw_alloc_xmitframe(struct xmit_priv *pxmitpriv)/* _queue *pfree_xmit_queue) */
1265 {
1266 /*
1267 Please remember to use all the osdep_service api,
1268 and lock/unlock or _enter/_exit critical to protect
1269 pfree_xmit_queue
1270 */
1271
1272 struct xmit_frame *pxframe = NULL;
1273 struct list_head *plist, *phead;
1274 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
1275
1276 spin_lock_bh(&pfree_xmit_queue->lock);
1277
1278 if (list_empty(&pfree_xmit_queue->queue)) {
1279 pxframe = NULL;
1280 } else {
1281 phead = get_list_head(pfree_xmit_queue);
1282
1283 plist = phead->next;
1284
1285 pxframe = container_of(plist, struct xmit_frame, list);
1286
1287 list_del_init(&pxframe->list);
1288 }
1289
1290 if (pxframe) { /* default value setting */
1291 pxmitpriv->free_xmitframe_cnt--;
1292
1293 pxframe->buf_addr = NULL;
1294 pxframe->pxmitbuf = NULL;
1295
1296 memset(&pxframe->attrib, 0, sizeof(struct pkt_attrib));
1297 /* pxframe->attrib.psta = NULL; */
1298
1299 pxframe->frame_tag = DATA_FRAMETAG;
1300
1301 pxframe->pkt = NULL;
1302 pxframe->pkt_offset = 1;/* default use pkt_offset to fill tx desc */
1303
1304 pxframe->agg_num = 1;
1305 pxframe->ack_report = 0;
1306 }
1307
1308 spin_unlock_bh(&pfree_xmit_queue->lock);
1309
1310 return pxframe;
1311 }
1312
rtw_free_xmitframe(struct xmit_priv * pxmitpriv,struct xmit_frame * pxmitframe)1313 s32 rtw_free_xmitframe(struct xmit_priv *pxmitpriv, struct xmit_frame *pxmitframe)
1314 {
1315 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
1316 struct adapter *padapter = pxmitpriv->adapter;
1317 struct sk_buff *pndis_pkt = NULL;
1318
1319 if (!pxmitframe)
1320 goto exit;
1321
1322 spin_lock_bh(&pfree_xmit_queue->lock);
1323
1324 list_del_init(&pxmitframe->list);
1325
1326 if (pxmitframe->pkt) {
1327 pndis_pkt = pxmitframe->pkt;
1328 pxmitframe->pkt = NULL;
1329 }
1330
1331 list_add_tail(&pxmitframe->list, get_list_head(pfree_xmit_queue));
1332
1333 pxmitpriv->free_xmitframe_cnt++;
1334
1335 spin_unlock_bh(&pfree_xmit_queue->lock);
1336
1337 if (pndis_pkt)
1338 rtw_os_pkt_complete(padapter, pndis_pkt);
1339
1340 exit:
1341
1342 return _SUCCESS;
1343 }
1344
rtw_free_xmitframe_queue(struct xmit_priv * pxmitpriv,struct __queue * pframequeue)1345 void rtw_free_xmitframe_queue(struct xmit_priv *pxmitpriv, struct __queue *pframequeue)
1346 {
1347 struct list_head *plist, *phead;
1348 struct xmit_frame *pxmitframe;
1349
1350 spin_lock_bh(&pframequeue->lock);
1351
1352 phead = get_list_head(pframequeue);
1353 plist = phead->next;
1354
1355 while (phead != plist) {
1356 pxmitframe = container_of(plist, struct xmit_frame, list);
1357
1358 plist = plist->next;
1359
1360 rtw_free_xmitframe(pxmitpriv, pxmitframe);
1361 }
1362 spin_unlock_bh(&pframequeue->lock);
1363
1364 }
1365
rtw_xmitframe_enqueue(struct adapter * padapter,struct xmit_frame * pxmitframe)1366 s32 rtw_xmitframe_enqueue(struct adapter *padapter, struct xmit_frame *pxmitframe)
1367 {
1368 if (rtw_xmit_classifier(padapter, pxmitframe) == _FAIL) {
1369 /* pxmitframe->pkt = NULL; */
1370 return _FAIL;
1371 }
1372
1373 return _SUCCESS;
1374 }
1375
dequeue_one_xmitframe(struct xmit_priv * pxmitpriv,struct hw_xmit * phwxmit,struct tx_servq * ptxservq,struct __queue * pframe_queue)1376 static struct xmit_frame *dequeue_one_xmitframe(struct xmit_priv *pxmitpriv, struct hw_xmit *phwxmit, struct tx_servq *ptxservq, struct __queue *pframe_queue)
1377 {
1378 struct list_head *xmitframe_plist, *xmitframe_phead;
1379 struct xmit_frame *pxmitframe = NULL;
1380
1381 xmitframe_phead = get_list_head(pframe_queue);
1382 xmitframe_plist = xmitframe_phead->next;
1383
1384 if (xmitframe_phead != xmitframe_plist) {
1385 pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
1386
1387 xmitframe_plist = xmitframe_plist->next;
1388
1389 list_del_init(&pxmitframe->list);
1390
1391 ptxservq->qcnt--;
1392 }
1393 return pxmitframe;
1394 }
1395
rtw_dequeue_xframe(struct xmit_priv * pxmitpriv,struct hw_xmit * phwxmit_i,int entry)1396 struct xmit_frame *rtw_dequeue_xframe(struct xmit_priv *pxmitpriv, struct hw_xmit *phwxmit_i, int entry)
1397 {
1398 struct list_head *sta_plist, *sta_phead;
1399 struct hw_xmit *phwxmit;
1400 struct tx_servq *ptxservq = NULL;
1401 struct __queue *pframe_queue = NULL;
1402 struct xmit_frame *pxmitframe = NULL;
1403 struct adapter *padapter = pxmitpriv->adapter;
1404 struct registry_priv *pregpriv = &padapter->registrypriv;
1405 int i, inx[4];
1406
1407 inx[0] = 0; inx[1] = 1; inx[2] = 2; inx[3] = 3;
1408
1409 if (pregpriv->wifi_spec == 1) {
1410 int j;
1411
1412 for (j = 0; j < 4; j++)
1413 inx[j] = pxmitpriv->wmm_para_seq[j];
1414 }
1415
1416 spin_lock_bh(&pxmitpriv->lock);
1417
1418 for (i = 0; i < entry; i++) {
1419 phwxmit = phwxmit_i + inx[i];
1420
1421 sta_phead = get_list_head(phwxmit->sta_queue);
1422 sta_plist = sta_phead->next;
1423
1424 while (sta_phead != sta_plist) {
1425 ptxservq = container_of(sta_plist, struct tx_servq, tx_pending);
1426
1427 pframe_queue = &ptxservq->sta_pending;
1428
1429 pxmitframe = dequeue_one_xmitframe(pxmitpriv, phwxmit, ptxservq, pframe_queue);
1430
1431 if (pxmitframe) {
1432 phwxmit->accnt--;
1433
1434 /* Remove sta node when there are no pending packets. */
1435 if (list_empty(&pframe_queue->queue)) /* must be done after get_next and before break */
1436 list_del_init(&ptxservq->tx_pending);
1437 goto exit;
1438 }
1439
1440 sta_plist = sta_plist->next;
1441 }
1442 }
1443 exit:
1444 spin_unlock_bh(&pxmitpriv->lock);
1445
1446 return pxmitframe;
1447 }
1448
rtw_get_sta_pending(struct adapter * padapter,struct sta_info * psta,int up,u8 * ac)1449 struct tx_servq *rtw_get_sta_pending(struct adapter *padapter, struct sta_info *psta, int up, u8 *ac)
1450 {
1451 struct tx_servq *ptxservq;
1452
1453 switch (up) {
1454 case 1:
1455 case 2:
1456 ptxservq = &psta->sta_xmitpriv.bk_q;
1457 *(ac) = 3;
1458 break;
1459 case 4:
1460 case 5:
1461 ptxservq = &psta->sta_xmitpriv.vi_q;
1462 *(ac) = 1;
1463 break;
1464 case 6:
1465 case 7:
1466 ptxservq = &psta->sta_xmitpriv.vo_q;
1467 *(ac) = 0;
1468 break;
1469 case 0:
1470 case 3:
1471 default:
1472 ptxservq = &psta->sta_xmitpriv.be_q;
1473 *(ac) = 2;
1474 break;
1475 }
1476
1477 return ptxservq;
1478 }
1479
1480 /*
1481 * Will enqueue pxmitframe to the proper queue,
1482 * and indicate it to xx_pending list.....
1483 */
rtw_xmit_classifier(struct adapter * padapter,struct xmit_frame * pxmitframe)1484 s32 rtw_xmit_classifier(struct adapter *padapter, struct xmit_frame *pxmitframe)
1485 {
1486 u8 ac_index;
1487 struct sta_info *psta;
1488 struct tx_servq *ptxservq;
1489 struct pkt_attrib *pattrib = &pxmitframe->attrib;
1490 struct sta_priv *pstapriv = &padapter->stapriv;
1491 struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
1492 int res = _SUCCESS;
1493
1494 if (pattrib->psta) {
1495 psta = pattrib->psta;
1496 } else {
1497 psta = rtw_get_stainfo(pstapriv, pattrib->ra);
1498 }
1499
1500 if (!psta) {
1501 res = _FAIL;
1502 DBG_88E("rtw_xmit_classifier: psta == NULL\n");
1503 goto exit;
1504 }
1505
1506 ptxservq = rtw_get_sta_pending(padapter, psta, pattrib->priority, (u8 *)(&ac_index));
1507
1508 if (list_empty(&ptxservq->tx_pending))
1509 list_add_tail(&ptxservq->tx_pending, get_list_head(phwxmits[ac_index].sta_queue));
1510
1511 list_add_tail(&pxmitframe->list, get_list_head(&ptxservq->sta_pending));
1512 ptxservq->qcnt++;
1513 phwxmits[ac_index].accnt++;
1514 exit:
1515
1516 return res;
1517 }
1518
rtw_alloc_hwxmits(struct adapter * padapter)1519 void rtw_alloc_hwxmits(struct adapter *padapter)
1520 {
1521 struct hw_xmit *hwxmits;
1522 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1523
1524 pxmitpriv->hwxmit_entry = HWXMIT_ENTRY;
1525
1526 pxmitpriv->hwxmits = kzalloc(sizeof(struct hw_xmit) * pxmitpriv->hwxmit_entry, GFP_KERNEL);
1527
1528 hwxmits = pxmitpriv->hwxmits;
1529
1530 if (pxmitpriv->hwxmit_entry == 5) {
1531 hwxmits[0] .sta_queue = &pxmitpriv->bm_pending;
1532 hwxmits[1] .sta_queue = &pxmitpriv->vo_pending;
1533 hwxmits[2] .sta_queue = &pxmitpriv->vi_pending;
1534 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
1535 hwxmits[4] .sta_queue = &pxmitpriv->be_pending;
1536 } else if (pxmitpriv->hwxmit_entry == 4) {
1537 hwxmits[0] .sta_queue = &pxmitpriv->vo_pending;
1538 hwxmits[1] .sta_queue = &pxmitpriv->vi_pending;
1539 hwxmits[2] .sta_queue = &pxmitpriv->be_pending;
1540 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
1541 } else {
1542 }
1543 }
1544
rtw_free_hwxmits(struct adapter * padapter)1545 void rtw_free_hwxmits(struct adapter *padapter)
1546 {
1547 struct hw_xmit *hwxmits;
1548 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1549
1550 hwxmits = pxmitpriv->hwxmits;
1551 kfree(hwxmits);
1552 }
1553
rtw_init_hwxmits(struct hw_xmit * phwxmit,int entry)1554 void rtw_init_hwxmits(struct hw_xmit *phwxmit, int entry)
1555 {
1556 int i;
1557
1558 for (i = 0; i < entry; i++, phwxmit++)
1559 phwxmit->accnt = 0;
1560
1561 }
1562
rtw_br_client_tx(struct adapter * padapter,struct sk_buff ** pskb)1563 static int rtw_br_client_tx(struct adapter *padapter, struct sk_buff **pskb)
1564 {
1565 struct sk_buff *skb = *pskb;
1566 int res, is_vlan_tag = 0, i, do_nat25 = 1;
1567 unsigned short vlan_hdr = 0;
1568 void *br_port = NULL;
1569
1570 rcu_read_lock();
1571 br_port = rcu_dereference(padapter->pnetdev->rx_handler_data);
1572 rcu_read_unlock();
1573 spin_lock_bh(&padapter->br_ext_lock);
1574 if (!(skb->data[0] & 1) && br_port &&
1575 memcmp(skb->data + MACADDRLEN, padapter->br_mac, MACADDRLEN) &&
1576 *((__be16 *)(skb->data + MACADDRLEN * 2)) != __constant_htons(ETH_P_8021Q) &&
1577 *((__be16 *)(skb->data + MACADDRLEN * 2)) == __constant_htons(ETH_P_IP) &&
1578 !memcmp(padapter->scdb_mac, skb->data + MACADDRLEN, MACADDRLEN) && padapter->scdb_entry) {
1579 memcpy(skb->data + MACADDRLEN, GET_MY_HWADDR(padapter), MACADDRLEN);
1580 padapter->scdb_entry->ageing_timer = jiffies;
1581 spin_unlock_bh(&padapter->br_ext_lock);
1582 } else {
1583 if (*((__be16 *)(skb->data + MACADDRLEN * 2)) == __constant_htons(ETH_P_8021Q)) {
1584 is_vlan_tag = 1;
1585 vlan_hdr = *((unsigned short *)(skb->data + MACADDRLEN * 2 + 2));
1586 for (i = 0; i < 6; i++)
1587 *((unsigned short *)(skb->data + MACADDRLEN * 2 + 2 - i * 2)) = *((unsigned short *)(skb->data + MACADDRLEN * 2 - 2 - i * 2));
1588 skb_pull(skb, 4);
1589 }
1590 if (!memcmp(skb->data + MACADDRLEN, padapter->br_mac, MACADDRLEN) &&
1591 (*((__be16 *)(skb->data + MACADDRLEN * 2)) == __constant_htons(ETH_P_IP)))
1592 memcpy(padapter->br_ip, skb->data + WLAN_ETHHDR_LEN + 12, 4);
1593
1594 if (*((__be16 *)(skb->data + MACADDRLEN * 2)) == __constant_htons(ETH_P_IP)) {
1595 if (memcmp(padapter->scdb_mac, skb->data + MACADDRLEN, MACADDRLEN)) {
1596 padapter->scdb_entry = (struct nat25_network_db_entry *)scdb_findEntry(padapter,
1597 skb->data + MACADDRLEN, skb->data + WLAN_ETHHDR_LEN + 12);
1598 if (padapter->scdb_entry) {
1599 memcpy(padapter->scdb_mac, skb->data + MACADDRLEN, MACADDRLEN);
1600 memcpy(padapter->scdb_ip, skb->data + WLAN_ETHHDR_LEN + 12, 4);
1601 padapter->scdb_entry->ageing_timer = jiffies;
1602 do_nat25 = 0;
1603 }
1604 } else {
1605 if (padapter->scdb_entry) {
1606 padapter->scdb_entry->ageing_timer = jiffies;
1607 do_nat25 = 0;
1608 } else {
1609 memset(padapter->scdb_mac, 0, MACADDRLEN);
1610 memset(padapter->scdb_ip, 0, 4);
1611 }
1612 }
1613 }
1614 spin_unlock_bh(&padapter->br_ext_lock);
1615 if (do_nat25) {
1616 if (nat25_db_handle(padapter, skb, NAT25_CHECK) == 0) {
1617 struct sk_buff *newskb;
1618
1619 if (is_vlan_tag) {
1620 skb_push(skb, 4);
1621 for (i = 0; i < 6; i++)
1622 *((unsigned short *)(skb->data + i * 2)) = *((unsigned short *)(skb->data + 4 + i * 2));
1623 *((__be16 *)(skb->data + MACADDRLEN * 2)) = __constant_htons(ETH_P_8021Q);
1624 *((unsigned short *)(skb->data + MACADDRLEN * 2 + 2)) = vlan_hdr;
1625 }
1626
1627 newskb = skb_copy(skb, GFP_ATOMIC);
1628 if (!newskb) {
1629 DEBUG_ERR("TX DROP: skb_copy fail!\n");
1630 return -1;
1631 }
1632 dev_kfree_skb_any(skb);
1633
1634 *pskb = skb = newskb;
1635 if (is_vlan_tag) {
1636 vlan_hdr = *((unsigned short *)(skb->data + MACADDRLEN * 2 + 2));
1637 for (i = 0; i < 6; i++)
1638 *((unsigned short *)(skb->data + MACADDRLEN * 2 + 2 - i * 2)) = *((unsigned short *)(skb->data + MACADDRLEN * 2 - 2 - i * 2));
1639 skb_pull(skb, 4);
1640 }
1641 }
1642
1643 if (skb_is_nonlinear(skb))
1644 DEBUG_ERR("%s(): skb_is_nonlinear!!\n", __func__);
1645
1646 res = skb_linearize(skb);
1647 if (res < 0) {
1648 DEBUG_ERR("TX DROP: skb_linearize fail!\n");
1649 return -1;
1650 }
1651
1652 res = nat25_db_handle(padapter, skb, NAT25_INSERT);
1653 if (res < 0) {
1654 if (res == -2) {
1655 DEBUG_ERR("TX DROP: nat25_db_handle fail!\n");
1656 return -1;
1657 }
1658 return 0;
1659 }
1660 }
1661
1662 memcpy(skb->data + MACADDRLEN, GET_MY_HWADDR(padapter), MACADDRLEN);
1663
1664 dhcp_flag_bcast(padapter, skb);
1665
1666 if (is_vlan_tag) {
1667 skb_push(skb, 4);
1668 for (i = 0; i < 6; i++)
1669 *((unsigned short *)(skb->data + i * 2)) = *((unsigned short *)(skb->data + 4 + i * 2));
1670 *((__be16 *)(skb->data + MACADDRLEN * 2)) = __constant_htons(ETH_P_8021Q);
1671 *((unsigned short *)(skb->data + MACADDRLEN * 2 + 2)) = vlan_hdr;
1672 }
1673 }
1674
1675 /* check if SA is equal to our MAC */
1676 if (memcmp(skb->data + MACADDRLEN, GET_MY_HWADDR(padapter), MACADDRLEN)) {
1677 DEBUG_ERR("TX DROP: untransformed frame SA:%02X%02X%02X%02X%02X%02X!\n",
1678 skb->data[6], skb->data[7], skb->data[8], skb->data[9], skb->data[10], skb->data[11]);
1679 return -1;
1680 }
1681 return 0;
1682 }
1683
rtw_get_ff_hwaddr(struct xmit_frame * pxmitframe)1684 u32 rtw_get_ff_hwaddr(struct xmit_frame *pxmitframe)
1685 {
1686 u32 addr;
1687 struct pkt_attrib *pattrib = &pxmitframe->attrib;
1688
1689 switch (pattrib->qsel) {
1690 case 0:
1691 case 3:
1692 addr = BE_QUEUE_INX;
1693 break;
1694 case 1:
1695 case 2:
1696 addr = BK_QUEUE_INX;
1697 break;
1698 case 4:
1699 case 5:
1700 addr = VI_QUEUE_INX;
1701 break;
1702 case 6:
1703 case 7:
1704 addr = VO_QUEUE_INX;
1705 break;
1706 case 0x10:
1707 addr = BCN_QUEUE_INX;
1708 break;
1709 case 0x11:/* BC/MC in PS (HIQ) */
1710 addr = HIGH_QUEUE_INX;
1711 break;
1712 case 0x12:
1713 default:
1714 addr = MGT_QUEUE_INX;
1715 break;
1716 }
1717
1718 return addr;
1719 }
1720
do_queue_select(struct adapter * padapter,struct pkt_attrib * pattrib)1721 static void do_queue_select(struct adapter *padapter, struct pkt_attrib *pattrib)
1722 {
1723 u8 qsel;
1724
1725 qsel = pattrib->priority;
1726
1727 pattrib->qsel = qsel;
1728 }
1729
1730 /*
1731 * The main transmit(tx) entry
1732 *
1733 * Return
1734 * 1 enqueue
1735 * 0 success, hardware will handle this xmit frame(packet)
1736 * <0 fail
1737 */
rtw_xmit(struct adapter * padapter,struct sk_buff ** ppkt)1738 s32 rtw_xmit(struct adapter *padapter, struct sk_buff **ppkt)
1739 {
1740 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1741 struct xmit_frame *pxmitframe = NULL;
1742 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
1743 void *br_port = NULL;
1744 s32 res;
1745
1746 pxmitframe = rtw_alloc_xmitframe(pxmitpriv);
1747 if (!pxmitframe) {
1748 DBG_88E("DBG_TX_DROP_FRAME %s no more pxmitframe\n", __func__);
1749 return -1;
1750 }
1751
1752 rcu_read_lock();
1753 br_port = rcu_dereference(padapter->pnetdev->rx_handler_data);
1754 rcu_read_unlock();
1755
1756 if (br_port && check_fwstate(pmlmepriv, WIFI_STATION_STATE | WIFI_ADHOC_STATE)) {
1757 res = rtw_br_client_tx(padapter, ppkt);
1758 if (res == -1) {
1759 rtw_free_xmitframe(pxmitpriv, pxmitframe);
1760 return -1;
1761 }
1762 }
1763
1764 res = update_attrib(padapter, *ppkt, &pxmitframe->attrib);
1765
1766 if (res == _FAIL) {
1767 rtw_free_xmitframe(pxmitpriv, pxmitframe);
1768 return -1;
1769 }
1770 pxmitframe->pkt = *ppkt;
1771
1772 rtw_led_control(padapter, LED_CTL_TX);
1773
1774 do_queue_select(padapter, &pxmitframe->attrib);
1775
1776 #ifdef CONFIG_88EU_AP_MODE
1777 spin_lock_bh(&pxmitpriv->lock);
1778 if (xmitframe_enqueue_for_sleeping_sta(padapter, pxmitframe)) {
1779 spin_unlock_bh(&pxmitpriv->lock);
1780 return 1;
1781 }
1782 spin_unlock_bh(&pxmitpriv->lock);
1783 #endif
1784
1785 if (!rtw_hal_xmit(padapter, pxmitframe))
1786 return 1;
1787
1788 return 0;
1789 }
1790
1791 #if defined(CONFIG_88EU_AP_MODE)
1792
xmitframe_enqueue_for_sleeping_sta(struct adapter * padapter,struct xmit_frame * pxmitframe)1793 int xmitframe_enqueue_for_sleeping_sta(struct adapter *padapter, struct xmit_frame *pxmitframe)
1794 {
1795 int ret = false;
1796 struct sta_info *psta = NULL;
1797 struct sta_priv *pstapriv = &padapter->stapriv;
1798 struct pkt_attrib *pattrib = &pxmitframe->attrib;
1799 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
1800 bool bmcst = is_multicast_ether_addr(pattrib->ra);
1801
1802 if (!check_fwstate(pmlmepriv, WIFI_AP_STATE))
1803 return ret;
1804
1805 if (pattrib->psta)
1806 psta = pattrib->psta;
1807 else
1808 psta = rtw_get_stainfo(pstapriv, pattrib->ra);
1809
1810 if (!psta)
1811 return ret;
1812
1813 if (pattrib->triggered == 1) {
1814 if (bmcst)
1815 pattrib->qsel = 0x11;/* HIQ */
1816 return ret;
1817 }
1818
1819 if (bmcst) {
1820 spin_lock_bh(&psta->sleep_q.lock);
1821
1822 if (pstapriv->sta_dz_bitmap) {/* if any one sta is in ps mode */
1823 list_del_init(&pxmitframe->list);
1824
1825 list_add_tail(&pxmitframe->list, get_list_head(&psta->sleep_q));
1826
1827 psta->sleepq_len++;
1828
1829 pstapriv->tim_bitmap |= BIT(0);/* */
1830 pstapriv->sta_dz_bitmap |= BIT(0);
1831
1832 update_beacon(padapter, _TIM_IE_, NULL, false);/* tx bc/mc packets after upate bcn */
1833
1834 ret = true;
1835 }
1836
1837 spin_unlock_bh(&psta->sleep_q.lock);
1838
1839 return ret;
1840 }
1841
1842 spin_lock_bh(&psta->sleep_q.lock);
1843
1844 if (psta->state & WIFI_SLEEP_STATE) {
1845 u8 wmmps_ac = 0;
1846
1847 if (pstapriv->sta_dz_bitmap & BIT(psta->aid)) {
1848 list_del_init(&pxmitframe->list);
1849
1850 list_add_tail(&pxmitframe->list, get_list_head(&psta->sleep_q));
1851
1852 psta->sleepq_len++;
1853
1854 switch (pattrib->priority) {
1855 case 1:
1856 case 2:
1857 wmmps_ac = psta->uapsd_bk & BIT(0);
1858 break;
1859 case 4:
1860 case 5:
1861 wmmps_ac = psta->uapsd_vi & BIT(0);
1862 break;
1863 case 6:
1864 case 7:
1865 wmmps_ac = psta->uapsd_vo & BIT(0);
1866 break;
1867 case 0:
1868 case 3:
1869 default:
1870 wmmps_ac = psta->uapsd_be & BIT(0);
1871 break;
1872 }
1873
1874 if (wmmps_ac)
1875 psta->sleepq_ac_len++;
1876
1877 if (((psta->has_legacy_ac) && (!wmmps_ac)) ||
1878 ((!psta->has_legacy_ac) && (wmmps_ac))) {
1879 pstapriv->tim_bitmap |= BIT(psta->aid);
1880
1881 if (psta->sleepq_len == 1) {
1882 /* upate BCN for TIM IE */
1883 update_beacon(padapter, _TIM_IE_, NULL, false);
1884 }
1885 }
1886 ret = true;
1887 }
1888 }
1889
1890 spin_unlock_bh(&psta->sleep_q.lock);
1891
1892 return ret;
1893 }
1894
dequeue_xmitframes_to_sleeping_queue(struct adapter * padapter,struct sta_info * psta,struct __queue * pframequeue)1895 static void dequeue_xmitframes_to_sleeping_queue(struct adapter *padapter, struct sta_info *psta, struct __queue *pframequeue)
1896 {
1897 struct list_head *plist, *phead;
1898 u8 ac_index;
1899 struct tx_servq *ptxservq;
1900 struct pkt_attrib *pattrib;
1901 struct xmit_frame *pxmitframe;
1902 struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
1903
1904 phead = get_list_head(pframequeue);
1905 plist = phead->next;
1906
1907 while (phead != plist) {
1908 pxmitframe = container_of(plist, struct xmit_frame, list);
1909
1910 plist = plist->next;
1911
1912 xmitframe_enqueue_for_sleeping_sta(padapter, pxmitframe);
1913
1914 pattrib = &pxmitframe->attrib;
1915
1916 ptxservq = rtw_get_sta_pending(padapter, psta, pattrib->priority, (u8 *)(&ac_index));
1917
1918 ptxservq->qcnt--;
1919 phwxmits[ac_index].accnt--;
1920 }
1921 }
1922
stop_sta_xmit(struct adapter * padapter,struct sta_info * psta)1923 void stop_sta_xmit(struct adapter *padapter, struct sta_info *psta)
1924 {
1925 struct sta_info *psta_bmc;
1926 struct sta_xmit_priv *pstaxmitpriv;
1927 struct sta_priv *pstapriv = &padapter->stapriv;
1928 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1929
1930 pstaxmitpriv = &psta->sta_xmitpriv;
1931
1932 /* for BC/MC Frames */
1933 psta_bmc = rtw_get_bcmc_stainfo(padapter);
1934
1935 spin_lock_bh(&pxmitpriv->lock);
1936
1937 psta->state |= WIFI_SLEEP_STATE;
1938
1939 pstapriv->sta_dz_bitmap |= BIT(psta->aid);
1940
1941 dequeue_xmitframes_to_sleeping_queue(padapter, psta, &pstaxmitpriv->vo_q.sta_pending);
1942 list_del_init(&pstaxmitpriv->vo_q.tx_pending);
1943
1944 dequeue_xmitframes_to_sleeping_queue(padapter, psta, &pstaxmitpriv->vi_q.sta_pending);
1945 list_del_init(&pstaxmitpriv->vi_q.tx_pending);
1946
1947 dequeue_xmitframes_to_sleeping_queue(padapter, psta, &pstaxmitpriv->be_q.sta_pending);
1948 list_del_init(&pstaxmitpriv->be_q.tx_pending);
1949
1950 dequeue_xmitframes_to_sleeping_queue(padapter, psta, &pstaxmitpriv->bk_q.sta_pending);
1951 list_del_init(&pstaxmitpriv->bk_q.tx_pending);
1952
1953 /* for BC/MC Frames */
1954 pstaxmitpriv = &psta_bmc->sta_xmitpriv;
1955 dequeue_xmitframes_to_sleeping_queue(padapter, psta_bmc, &pstaxmitpriv->be_q.sta_pending);
1956 list_del_init(&pstaxmitpriv->be_q.tx_pending);
1957
1958 spin_unlock_bh(&pxmitpriv->lock);
1959 }
1960
wakeup_sta_to_xmit(struct adapter * padapter,struct sta_info * psta)1961 void wakeup_sta_to_xmit(struct adapter *padapter, struct sta_info *psta)
1962 {
1963 u8 update_mask = 0, wmmps_ac = 0;
1964 struct sta_info *psta_bmc;
1965 struct list_head *xmitframe_plist, *xmitframe_phead;
1966 struct xmit_frame *pxmitframe = NULL;
1967 struct sta_priv *pstapriv = &padapter->stapriv;
1968
1969 spin_lock_bh(&psta->sleep_q.lock);
1970
1971 xmitframe_phead = get_list_head(&psta->sleep_q);
1972 xmitframe_plist = xmitframe_phead->next;
1973
1974 while (xmitframe_phead != xmitframe_plist) {
1975 pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
1976
1977 xmitframe_plist = xmitframe_plist->next;
1978
1979 list_del_init(&pxmitframe->list);
1980
1981 switch (pxmitframe->attrib.priority) {
1982 case 1:
1983 case 2:
1984 wmmps_ac = psta->uapsd_bk & BIT(1);
1985 break;
1986 case 4:
1987 case 5:
1988 wmmps_ac = psta->uapsd_vi & BIT(1);
1989 break;
1990 case 6:
1991 case 7:
1992 wmmps_ac = psta->uapsd_vo & BIT(1);
1993 break;
1994 case 0:
1995 case 3:
1996 default:
1997 wmmps_ac = psta->uapsd_be & BIT(1);
1998 break;
1999 }
2000
2001 psta->sleepq_len--;
2002 if (psta->sleepq_len > 0)
2003 pxmitframe->attrib.mdata = 1;
2004 else
2005 pxmitframe->attrib.mdata = 0;
2006
2007 if (wmmps_ac) {
2008 psta->sleepq_ac_len--;
2009 if (psta->sleepq_ac_len > 0) {
2010 pxmitframe->attrib.mdata = 1;
2011 pxmitframe->attrib.eosp = 0;
2012 } else {
2013 pxmitframe->attrib.mdata = 0;
2014 pxmitframe->attrib.eosp = 1;
2015 }
2016 }
2017
2018 pxmitframe->attrib.triggered = 1;
2019
2020 spin_unlock_bh(&psta->sleep_q.lock);
2021 if (rtw_hal_xmit(padapter, pxmitframe))
2022 rtw_os_xmit_complete(padapter, pxmitframe);
2023 spin_lock_bh(&psta->sleep_q.lock);
2024 }
2025
2026 if (psta->sleepq_len == 0) {
2027 pstapriv->tim_bitmap &= ~BIT(psta->aid);
2028
2029 update_mask = BIT(0);
2030
2031 if (psta->state & WIFI_SLEEP_STATE)
2032 psta->state ^= WIFI_SLEEP_STATE;
2033
2034 if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
2035 psta->expire_to = pstapriv->expire_to;
2036 psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
2037 }
2038
2039 pstapriv->sta_dz_bitmap &= ~BIT(psta->aid);
2040 }
2041
2042 spin_unlock_bh(&psta->sleep_q.lock);
2043
2044 /* for BC/MC Frames */
2045 psta_bmc = rtw_get_bcmc_stainfo(padapter);
2046 if (!psta_bmc)
2047 return;
2048
2049 if ((pstapriv->sta_dz_bitmap & 0xfffe) == 0x0) { /* no any sta in ps mode */
2050 spin_lock_bh(&psta_bmc->sleep_q.lock);
2051
2052 xmitframe_phead = get_list_head(&psta_bmc->sleep_q);
2053 xmitframe_plist = xmitframe_phead->next;
2054
2055 while (xmitframe_phead != xmitframe_plist) {
2056 pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
2057
2058 xmitframe_plist = xmitframe_plist->next;
2059
2060 list_del_init(&pxmitframe->list);
2061
2062 psta_bmc->sleepq_len--;
2063 if (psta_bmc->sleepq_len > 0)
2064 pxmitframe->attrib.mdata = 1;
2065 else
2066 pxmitframe->attrib.mdata = 0;
2067
2068 pxmitframe->attrib.triggered = 1;
2069
2070 spin_unlock_bh(&psta_bmc->sleep_q.lock);
2071 if (rtw_hal_xmit(padapter, pxmitframe))
2072 rtw_os_xmit_complete(padapter, pxmitframe);
2073 spin_lock_bh(&psta_bmc->sleep_q.lock);
2074 }
2075
2076 if (psta_bmc->sleepq_len == 0) {
2077 pstapriv->tim_bitmap &= ~BIT(0);
2078 pstapriv->sta_dz_bitmap &= ~BIT(0);
2079
2080 update_mask |= BIT(1);
2081 }
2082
2083 spin_unlock_bh(&psta_bmc->sleep_q.lock);
2084 }
2085
2086 if (update_mask)
2087 update_beacon(padapter, _TIM_IE_, NULL, false);
2088 }
2089
xmit_delivery_enabled_frames(struct adapter * padapter,struct sta_info * psta)2090 void xmit_delivery_enabled_frames(struct adapter *padapter, struct sta_info *psta)
2091 {
2092 u8 wmmps_ac = 0;
2093 struct list_head *xmitframe_plist, *xmitframe_phead;
2094 struct xmit_frame *pxmitframe = NULL;
2095 struct sta_priv *pstapriv = &padapter->stapriv;
2096
2097 spin_lock_bh(&psta->sleep_q.lock);
2098
2099 xmitframe_phead = get_list_head(&psta->sleep_q);
2100 xmitframe_plist = xmitframe_phead->next;
2101
2102 while (xmitframe_phead != xmitframe_plist) {
2103 pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
2104
2105 xmitframe_plist = xmitframe_plist->next;
2106
2107 switch (pxmitframe->attrib.priority) {
2108 case 1:
2109 case 2:
2110 wmmps_ac = psta->uapsd_bk & BIT(1);
2111 break;
2112 case 4:
2113 case 5:
2114 wmmps_ac = psta->uapsd_vi & BIT(1);
2115 break;
2116 case 6:
2117 case 7:
2118 wmmps_ac = psta->uapsd_vo & BIT(1);
2119 break;
2120 case 0:
2121 case 3:
2122 default:
2123 wmmps_ac = psta->uapsd_be & BIT(1);
2124 break;
2125 }
2126
2127 if (!wmmps_ac)
2128 continue;
2129
2130 list_del_init(&pxmitframe->list);
2131
2132 psta->sleepq_len--;
2133 psta->sleepq_ac_len--;
2134
2135 if (psta->sleepq_ac_len > 0) {
2136 pxmitframe->attrib.mdata = 1;
2137 pxmitframe->attrib.eosp = 0;
2138 } else {
2139 pxmitframe->attrib.mdata = 0;
2140 pxmitframe->attrib.eosp = 1;
2141 }
2142
2143 pxmitframe->attrib.triggered = 1;
2144
2145 if (rtw_hal_xmit(padapter, pxmitframe))
2146 rtw_os_xmit_complete(padapter, pxmitframe);
2147
2148 if ((psta->sleepq_ac_len == 0) && (!psta->has_legacy_ac) && (wmmps_ac)) {
2149 pstapriv->tim_bitmap &= ~BIT(psta->aid);
2150
2151 /* upate BCN for TIM IE */
2152 update_beacon(padapter, _TIM_IE_, NULL, false);
2153 }
2154 }
2155
2156 spin_unlock_bh(&psta->sleep_q.lock);
2157 }
2158
2159 #endif
2160
rtw_sctx_init(struct submit_ctx * sctx,int timeout_ms)2161 void rtw_sctx_init(struct submit_ctx *sctx, int timeout_ms)
2162 {
2163 sctx->timeout_ms = timeout_ms;
2164 sctx->submit_time = jiffies;
2165 init_completion(&sctx->done);
2166 sctx->status = RTW_SCTX_SUBMITTED;
2167 }
2168
rtw_sctx_wait(struct submit_ctx * sctx)2169 int rtw_sctx_wait(struct submit_ctx *sctx)
2170 {
2171 int ret = _FAIL;
2172 unsigned long expire;
2173 int status = 0;
2174
2175 expire = sctx->timeout_ms ? msecs_to_jiffies(sctx->timeout_ms) : MAX_SCHEDULE_TIMEOUT;
2176 if (!wait_for_completion_timeout(&sctx->done, expire)) {
2177 /* timeout, do something?? */
2178 status = RTW_SCTX_DONE_TIMEOUT;
2179 DBG_88E("%s timeout\n", __func__);
2180 } else {
2181 status = sctx->status;
2182 }
2183
2184 if (status == RTW_SCTX_DONE_SUCCESS)
2185 ret = _SUCCESS;
2186
2187 return ret;
2188 }
2189
rtw_sctx_chk_waring_status(int status)2190 static bool rtw_sctx_chk_waring_status(int status)
2191 {
2192 switch (status) {
2193 case RTW_SCTX_DONE_UNKNOWN:
2194 case RTW_SCTX_DONE_BUF_ALLOC:
2195 case RTW_SCTX_DONE_BUF_FREE:
2196
2197 case RTW_SCTX_DONE_DRV_STOP:
2198 case RTW_SCTX_DONE_DEV_REMOVE:
2199 return true;
2200 default:
2201 return false;
2202 }
2203 }
2204
rtw_sctx_done_err(struct submit_ctx ** sctx,int status)2205 void rtw_sctx_done_err(struct submit_ctx **sctx, int status)
2206 {
2207 if (*sctx) {
2208 if (rtw_sctx_chk_waring_status(status))
2209 DBG_88E("%s status:%d\n", __func__, status);
2210 (*sctx)->status = status;
2211 complete(&((*sctx)->done));
2212 *sctx = NULL;
2213 }
2214 }
2215
rtw_sctx_done(struct submit_ctx ** sctx)2216 void rtw_sctx_done(struct submit_ctx **sctx)
2217 {
2218 rtw_sctx_done_err(sctx, RTW_SCTX_DONE_SUCCESS);
2219 }
2220
rtw_ack_tx_wait(struct xmit_priv * pxmitpriv,u32 timeout_ms)2221 int rtw_ack_tx_wait(struct xmit_priv *pxmitpriv, u32 timeout_ms)
2222 {
2223 struct submit_ctx *pack_tx_ops = &pxmitpriv->ack_tx_ops;
2224
2225 pack_tx_ops->submit_time = jiffies;
2226 pack_tx_ops->timeout_ms = timeout_ms;
2227 pack_tx_ops->status = RTW_SCTX_SUBMITTED;
2228
2229 return rtw_sctx_wait(pack_tx_ops);
2230 }
2231
rtw_ack_tx_done(struct xmit_priv * pxmitpriv,int status)2232 void rtw_ack_tx_done(struct xmit_priv *pxmitpriv, int status)
2233 {
2234 struct submit_ctx *pack_tx_ops = &pxmitpriv->ack_tx_ops;
2235
2236 if (pxmitpriv->ack_tx)
2237 rtw_sctx_done_err(&pack_tx_ops, status);
2238 else
2239 DBG_88E("%s ack_tx not set\n", __func__);
2240 }
2241
