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Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus
[linux-btrfs-devel.git] / drivers / staging / rtl8712 / rtl871x_xmit.c
blobccf08911f58b7a91a7560e3a1e4935127f748410
1 /******************************************************************************
2 * rtl871x_xmit.c
3 *
4 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
5 * Linux device driver for RTL8192SU
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of version 2 of the GNU General Public License as
9 * published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 *
16 * You should have received a copy of the GNU General Public License along with
17 * this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
19 *
20 * Modifications for inclusion into the Linux staging tree are
21 * Copyright(c) 2010 Larry Finger. All rights reserved.
22 *
23 * Contact information:
24 * WLAN FAE <wlanfae@realtek.com>
25 * Larry Finger <Larry.Finger@lwfinger.net>
26 *
27 ******************************************************************************/
28
29 #define _RTL871X_XMIT_C_
30
31 #include "osdep_service.h"
32 #include "drv_types.h"
33 #include "rtl871x_byteorder.h"
34 #include "wifi.h"
35 #include "osdep_intf.h"
36 #include "usb_ops.h"
37
38
39 static const u8 P802_1H_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0xf8};
40 static const u8 RFC1042_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0x00};
41 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry);
42 static void alloc_hwxmits(struct _adapter *padapter);
43 static void free_hwxmits(struct _adapter *padapter);
44
45 static void _init_txservq(struct tx_servq *ptxservq)
46 {
47 _init_listhead(&ptxservq->tx_pending);
48 _init_queue(&ptxservq->sta_pending);
49 ptxservq->qcnt = 0;
50 }
51
52 void _r8712_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv)
53 {
54 memset((unsigned char *)psta_xmitpriv, 0,
55 sizeof(struct sta_xmit_priv));
56 spin_lock_init(&psta_xmitpriv->lock);
57 _init_txservq(&psta_xmitpriv->be_q);
58 _init_txservq(&psta_xmitpriv->bk_q);
59 _init_txservq(&psta_xmitpriv->vi_q);
60 _init_txservq(&psta_xmitpriv->vo_q);
61 _init_listhead(&psta_xmitpriv->legacy_dz);
62 _init_listhead(&psta_xmitpriv->apsd);
63 }
64
65 sint _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv,
66 struct _adapter *padapter)
67 {
68 sint i;
69 struct xmit_buf *pxmitbuf;
70 struct xmit_frame *pxframe;
71
72 memset((unsigned char *)pxmitpriv, 0, sizeof(struct xmit_priv));
73 spin_lock_init(&pxmitpriv->lock);
74 sema_init(&pxmitpriv->xmit_sema, 0);
75 sema_init(&pxmitpriv->terminate_xmitthread_sema, 0);
76 /*
77 Please insert all the queue initializaiton using _init_queue below
78 */
79 pxmitpriv->adapter = padapter;
80 _init_queue(&pxmitpriv->be_pending);
81 _init_queue(&pxmitpriv->bk_pending);
82 _init_queue(&pxmitpriv->vi_pending);
83 _init_queue(&pxmitpriv->vo_pending);
84 _init_queue(&pxmitpriv->bm_pending);
85 _init_queue(&pxmitpriv->legacy_dz_queue);
86 _init_queue(&pxmitpriv->apsd_queue);
87 _init_queue(&pxmitpriv->free_xmit_queue);
88 /*
89 Please allocate memory with the sz = (struct xmit_frame) * NR_XMITFRAME,
90 and initialize free_xmit_frame below.
91 Please also apply free_txobj to link_up all the xmit_frames...
92 */
93 pxmitpriv->pallocated_frame_buf = _malloc(NR_XMITFRAME *
94 sizeof(struct xmit_frame) + 4);
95 if (pxmitpriv->pallocated_frame_buf == NULL) {
96 pxmitpriv->pxmit_frame_buf = NULL;
97 return _FAIL;
98 }
99 pxmitpriv->pxmit_frame_buf = pxmitpriv->pallocated_frame_buf + 4 -
100 ((addr_t) (pxmitpriv->pallocated_frame_buf) & 3);
101 pxframe = (struct xmit_frame *) pxmitpriv->pxmit_frame_buf;
102 for (i = 0; i < NR_XMITFRAME; i++) {
103 _init_listhead(&(pxframe->list));
104 pxframe->padapter = padapter;
105 pxframe->frame_tag = DATA_FRAMETAG;
106 pxframe->pkt = NULL;
107 pxframe->buf_addr = NULL;
108 pxframe->pxmitbuf = NULL;
109 list_insert_tail(&(pxframe->list),
110 &(pxmitpriv->free_xmit_queue.queue));
111 pxframe++;
112 }
113 pxmitpriv->free_xmitframe_cnt = NR_XMITFRAME;
114 /*
115 init xmit hw_txqueue
116 */
117 _r8712_init_hw_txqueue(&pxmitpriv->be_txqueue, BE_QUEUE_INX);
118 _r8712_init_hw_txqueue(&pxmitpriv->bk_txqueue, BK_QUEUE_INX);
119 _r8712_init_hw_txqueue(&pxmitpriv->vi_txqueue, VI_QUEUE_INX);
120 _r8712_init_hw_txqueue(&pxmitpriv->vo_txqueue, VO_QUEUE_INX);
121 _r8712_init_hw_txqueue(&pxmitpriv->bmc_txqueue, BMC_QUEUE_INX);
122 pxmitpriv->frag_len = MAX_FRAG_THRESHOLD;
123 pxmitpriv->txirp_cnt = 1;
124 sema_init(&(pxmitpriv->tx_retevt), 0);
125 /*per AC pending irp*/
126 pxmitpriv->beq_cnt = 0;
127 pxmitpriv->bkq_cnt = 0;
128 pxmitpriv->viq_cnt = 0;
129 pxmitpriv->voq_cnt = 0;
130 /*init xmit_buf*/
131 _init_queue(&pxmitpriv->free_xmitbuf_queue);
132 _init_queue(&pxmitpriv->pending_xmitbuf_queue);
133 pxmitpriv->pallocated_xmitbuf = _malloc(NR_XMITBUFF *
134 sizeof(struct xmit_buf) + 4);
135 if (pxmitpriv->pallocated_xmitbuf == NULL)
136 return _FAIL;
137 pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 -
138 ((addr_t)(pxmitpriv->pallocated_xmitbuf) & 3);
139 pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
140 for (i = 0; i < NR_XMITBUFF; i++) {
141 _init_listhead(&pxmitbuf->list);
142 pxmitbuf->pallocated_buf = _malloc(MAX_XMITBUF_SZ +
143 XMITBUF_ALIGN_SZ);
144 if (pxmitbuf->pallocated_buf == NULL)
145 return _FAIL;
146 pxmitbuf->pbuf = pxmitbuf->pallocated_buf + XMITBUF_ALIGN_SZ -
147 ((addr_t) (pxmitbuf->pallocated_buf) &
148 (XMITBUF_ALIGN_SZ - 1));
149 r8712_xmit_resource_alloc(padapter, pxmitbuf);
150 list_insert_tail(&pxmitbuf->list,
151 &(pxmitpriv->free_xmitbuf_queue.queue));
152 pxmitbuf++;
153 }
154 pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF;
155 alloc_hwxmits(padapter);
156 init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
157 tasklet_init(&pxmitpriv->xmit_tasklet,
158 (void(*)(addr_t))r8712_xmit_bh,
159 (addr_t)padapter);
160 return _SUCCESS;
161 }
162
163 void _free_xmit_priv(struct xmit_priv *pxmitpriv)
164 {
165 int i;
166 struct _adapter *padapter = pxmitpriv->adapter;
167 struct xmit_frame *pxmitframe = (struct xmit_frame *)
168 pxmitpriv->pxmit_frame_buf;
169 struct xmit_buf *pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
170
171 if (pxmitpriv->pxmit_frame_buf == NULL)
172 return;
173 for (i = 0; i < NR_XMITFRAME; i++) {
174 r8712_xmit_complete(padapter, pxmitframe);
175 pxmitframe++;
176 }
177 for (i = 0; i < NR_XMITBUFF; i++) {
178 r8712_xmit_resource_free(padapter, pxmitbuf);
179 kfree(pxmitbuf->pallocated_buf);
180 pxmitbuf++;
181 }
182 kfree(pxmitpriv->pallocated_frame_buf);
183 kfree(pxmitpriv->pallocated_xmitbuf);
184 free_hwxmits(padapter);
185 }
186
187 sint r8712_update_attrib(struct _adapter *padapter, _pkt *pkt,
188 struct pkt_attrib *pattrib)
189 {
190 uint i;
191 struct pkt_file pktfile;
192 struct sta_info *psta = NULL;
193 struct ethhdr etherhdr;
194
195 struct tx_cmd txdesc;
196
197 sint bmcast;
198 struct sta_priv *pstapriv = &padapter->stapriv;
199 struct security_priv *psecuritypriv = &padapter->securitypriv;
200 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
201 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
202
203 _r8712_open_pktfile(pkt, &pktfile);
204
205 i = _r8712_pktfile_read(&pktfile, (unsigned char *)&etherhdr, ETH_HLEN);
206
207 pattrib->ether_type = ntohs(etherhdr.h_proto);
208
209 {
210 u8 bool;
211 /*If driver xmit ARP packet, driver can set ps mode to initial
212 * setting. It stands for getting DHCP or fix IP.*/
213 if (pattrib->ether_type == 0x0806) {
214 if (padapter->pwrctrlpriv.pwr_mode !=
215 padapter->registrypriv.power_mgnt) {
216 _cancel_timer(&(pmlmepriv->dhcp_timer), &bool);
217 r8712_set_ps_mode(padapter, padapter->registrypriv.
218 power_mgnt, padapter->registrypriv.smart_ps);
219 }
220 }
221 }
222 memcpy(pattrib->dst, &etherhdr.h_dest, ETH_ALEN);
223 memcpy(pattrib->src, &etherhdr.h_source, ETH_ALEN);
224 pattrib->pctrl = 0;
225 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
226 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
227 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
228 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
229 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
230 memcpy(pattrib->ra, get_bssid(pmlmepriv), ETH_ALEN);
231 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
232 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
233 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
234 memcpy(pattrib->ta, get_bssid(pmlmepriv), ETH_ALEN);
235 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
236 /*firstly, filter packet not belongs to mp*/
237 if (pattrib->ether_type != 0x8712)
238 return _FAIL;
239 /* for mp storing the txcmd per packet,
240 * according to the info of txcmd to update pattrib */
241 /*get MP_TXDESC_SIZE bytes txcmd per packet*/
242 i = _r8712_pktfile_read(&pktfile, (u8 *)&txdesc, TXDESC_SIZE);
243 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
244 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
245 pattrib->pctrl = 1;
246 }
247 /* r8712_xmitframe_coalesce() overwrite this!*/
248 pattrib->pktlen = pktfile.pkt_len;
249 if (ETH_P_IP == pattrib->ether_type) {
250 /* The following is for DHCP and ARP packet, we use cck1M to
251 * tx these packets and let LPS awake some time
252 * to prevent DHCP protocol fail */
253 u8 tmp[24];
254 _r8712_pktfile_read(&pktfile, &tmp[0], 24);
255 pattrib->dhcp_pkt = 0;
256 if (pktfile.pkt_len > 282) {/*MINIMUM_DHCP_PACKET_SIZE)*/
257 if (ETH_P_IP == pattrib->ether_type) {/* IP header*/
258 if (((tmp[21] == 68) && (tmp[23] == 67)) ||
259 ((tmp[21] == 67) && (tmp[23] == 68))) {
260 /* 68 : UDP BOOTP client
261 * 67 : UDP BOOTP server
262 * Use low rate to send DHCP packet.*/
263 pattrib->dhcp_pkt = 1;
264 }
265 }
266 }
267 }
268 bmcast = IS_MCAST(pattrib->ra);
269 /* get sta_info*/
270 if (bmcast) {
271 psta = r8712_get_bcmc_stainfo(padapter);
272 pattrib->mac_id = 4;
273 } else {
274 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
275 psta = r8712_get_stainfo(pstapriv,
276 get_bssid(pmlmepriv));
277 pattrib->mac_id = 5;
278 } else {
279 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
280 if (psta == NULL) /* drop the pkt */
281 return _FAIL;
282 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE))
283 pattrib->mac_id = 5;
284 else
285 pattrib->mac_id = psta->mac_id;
286 }
287 }
288
289 if (psta) {
290 pattrib->psta = psta;
291 } else {
292 /* if we cannot get psta => drrp the pkt */
293 return _FAIL;
294 }
295
296 pattrib->ack_policy = 0;
297 /* get ether_hdr_len */
298 pattrib->pkt_hdrlen = ETH_HLEN;
299
300 if (pqospriv->qos_option)
301 r8712_set_qos(&pktfile, pattrib);
302 else {
303 pattrib->hdrlen = WLAN_HDR_A3_LEN;
304 pattrib->subtype = WIFI_DATA_TYPE;
305 pattrib->priority = 0;
306 }
307 if (psta->ieee8021x_blocked == true) {
308 pattrib->encrypt = 0;
309 if ((pattrib->ether_type != 0x888e) &&
310 (check_fwstate(pmlmepriv, WIFI_MP_STATE) == false))
311 return _FAIL;
312 } else
313 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast);
314 switch (pattrib->encrypt) {
315 case _WEP40_:
316 case _WEP104_:
317 pattrib->iv_len = 4;
318 pattrib->icv_len = 4;
319 break;
320 case _TKIP_:
321 pattrib->iv_len = 8;
322 pattrib->icv_len = 4;
323 if (padapter->securitypriv.busetkipkey == _FAIL)
324 return _FAIL;
325 break;
326 case _AES_:
327 pattrib->iv_len = 8;
328 pattrib->icv_len = 8;
329 break;
330 default:
331 pattrib->iv_len = 0;
332 pattrib->icv_len = 0;
333 break;
334 }
335
336 if (pattrib->encrypt &&
337 ((padapter->securitypriv.sw_encrypt == true) ||
338 (psecuritypriv->hw_decrypted == false)))
339 pattrib->bswenc = true;
340 else
341 pattrib->bswenc = false;
342 /* if in MP_STATE, update pkt_attrib from mp_txcmd, and overwrite
343 * some settings above.*/
344 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
345 pattrib->priority = (txdesc.txdw1 >> QSEL_SHT) & 0x1f;
346 return _SUCCESS;
347 }
348
349 static sint xmitframe_addmic(struct _adapter *padapter,
350 struct xmit_frame *pxmitframe)
351 {
352 u32 curfragnum, length, datalen;
353 u8 *pframe, *payload, mic[8];
354 struct mic_data micdata;
355 struct sta_info *stainfo;
356 struct qos_priv *pqospriv = &(padapter->mlmepriv.qospriv);
357 struct pkt_attrib *pattrib = &pxmitframe->attrib;
358 struct security_priv *psecuritypriv = &padapter->securitypriv;
359 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
360 u8 priority[4] = {0x0, 0x0, 0x0, 0x0};
361 sint bmcst = IS_MCAST(pattrib->ra);
362
363 if (pattrib->psta)
364 stainfo = pattrib->psta;
365 else
366 stainfo = r8712_get_stainfo(&padapter->stapriv,
367 &pattrib->ra[0]);
368 if (pattrib->encrypt == _TKIP_) {
369 /*encode mic code*/
370 if (stainfo != NULL) {
371 u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
372 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
373 0x0, 0x0};
374 datalen = pattrib->pktlen - pattrib->hdrlen;
375 pframe = pxmitframe->buf_addr + TXDESC_OFFSET;
376 if (bmcst) {
377 if (!memcmp(psecuritypriv->XGrptxmickey
378 [psecuritypriv->XGrpKeyid].skey,
379 null_key, 16))
380 return _FAIL;
381 /*start to calculate the mic code*/
382 r8712_secmicsetkey(&micdata,
383 psecuritypriv->
384 XGrptxmickey[psecuritypriv->
385 XGrpKeyid].skey);
386 } else {
387 if (!memcmp(&stainfo->tkiptxmickey.skey[0],
388 null_key, 16))
389 return _FAIL;
390 /* start to calculate the mic code */
391 r8712_secmicsetkey(&micdata,
392 &stainfo->tkiptxmickey.skey[0]);
393 }
394 if (pframe[1] & 1) { /* ToDS==1 */
395 r8712_secmicappend(&micdata,
396 &pframe[16], 6); /*DA*/
397 if (pframe[1]&2) /* From Ds==1 */
398 r8712_secmicappend(&micdata,
399 &pframe[24], 6);
400 else
401 r8712_secmicappend(&micdata,
402 &pframe[10], 6);
403 } else { /* ToDS==0 */
404 r8712_secmicappend(&micdata,
405 &pframe[4], 6); /* DA */
406 if (pframe[1]&2) /* From Ds==1 */
407 r8712_secmicappend(&micdata,
408 &pframe[16], 6);
409 else
410 r8712_secmicappend(&micdata,
411 &pframe[10], 6);
412 }
413 if (pqospriv->qos_option == 1)
414 priority[0] = (u8)pxmitframe->
415 attrib.priority;
416 r8712_secmicappend(&micdata, &priority[0], 4);
417 payload = pframe;
418 for (curfragnum = 0; curfragnum < pattrib->nr_frags;
419 curfragnum++) {
420 payload = (u8 *)RND4((addr_t)(payload));
421 payload = payload+pattrib->
422 hdrlen+pattrib->iv_len;
423 if ((curfragnum + 1) == pattrib->nr_frags) {
424 length = pattrib->last_txcmdsz -
425 pattrib->hdrlen -
426 pattrib->iv_len -
427 ((psecuritypriv->sw_encrypt)
428 ? pattrib->icv_len : 0);
429 r8712_secmicappend(&micdata, payload,
430 length);
431 payload = payload+length;
432 } else{
433 length = pxmitpriv->frag_len -
434 pattrib->hdrlen-pattrib->iv_len -
435 ((psecuritypriv->sw_encrypt) ?
436 pattrib->icv_len : 0);
437 r8712_secmicappend(&micdata, payload,
438 length);
439 payload = payload + length +
440 pattrib->icv_len;
441 }
442 }
443 r8712_secgetmic(&micdata, &(mic[0]));
444 /* add mic code and add the mic code length in
445 * last_txcmdsz */
446 memcpy(payload, &(mic[0]), 8);
447 pattrib->last_txcmdsz += 8;
448 payload = payload-pattrib->last_txcmdsz + 8;
449 }
450 }
451 return _SUCCESS;
452 }
453
454 static sint xmitframe_swencrypt(struct _adapter *padapter,
455 struct xmit_frame *pxmitframe)
456 {
457 struct pkt_attrib *pattrib = &pxmitframe->attrib;
458
459 if (pattrib->bswenc) {
460 switch (pattrib->encrypt) {
461 case _WEP40_:
462 case _WEP104_:
463 r8712_wep_encrypt(padapter, (u8 *)pxmitframe);
464 break;
465 case _TKIP_:
466 r8712_tkip_encrypt(padapter, (u8 *)pxmitframe);
467 break;
468 case _AES_:
469 r8712_aes_encrypt(padapter, (u8 *)pxmitframe);
470 break;
471 default:
472 break;
473 }
474 }
475 return _SUCCESS;
476 }
477
478 static sint make_wlanhdr(struct _adapter *padapter , u8 *hdr,
479 struct pkt_attrib *pattrib)
480 {
481 u16 *qc;
482
483 struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr;
484 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
485 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
486 u16 *fctrl = &pwlanhdr->frame_ctl;
487 memset(hdr, 0, WLANHDR_OFFSET);
488 SetFrameSubType(fctrl, pattrib->subtype);
489 if (pattrib->subtype & WIFI_DATA_TYPE) {
490 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true)) {
491 /* to_ds = 1, fr_ds = 0; */
492 SetToDs(fctrl);
493 memcpy(pwlanhdr->addr1, get_bssid(pmlmepriv),
494 ETH_ALEN);
495 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
496 memcpy(pwlanhdr->addr3, pattrib->dst, ETH_ALEN);
497 } else if ((check_fwstate(pmlmepriv, WIFI_AP_STATE) == true)) {
498 /* to_ds = 0, fr_ds = 1; */
499 SetFrDs(fctrl);
500 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
501 memcpy(pwlanhdr->addr2, get_bssid(pmlmepriv),
502 ETH_ALEN);
503 memcpy(pwlanhdr->addr3, pattrib->src, ETH_ALEN);
504 } else if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true)
505 || (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)
506 == true)) {
507 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
508 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
509 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
510 ETH_ALEN);
511 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
512 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
513 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
514 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
515 ETH_ALEN);
516 } else
517 return _FAIL;
518
519 if (pattrib->encrypt)
520 SetPrivacy(fctrl);
521 if (pqospriv->qos_option) {
522 qc = (unsigned short *)(hdr + pattrib->hdrlen - 2);
523 if (pattrib->priority)
524 SetPriority(qc, pattrib->priority);
525 SetAckpolicy(qc, pattrib->ack_policy);
526 }
527 /* TODO: fill HT Control Field */
528 /* Update Seq Num will be handled by f/w */
529 {
530 struct sta_info *psta;
531
532 sint bmcst = IS_MCAST(pattrib->ra);
533 if (pattrib->psta)
534 psta = pattrib->psta;
535 else {
536 if (bmcst)
537 psta = r8712_get_bcmc_stainfo(padapter);
538 else
539 psta =
540 r8712_get_stainfo(&padapter->stapriv,
541 pattrib->ra);
542 }
543 if (psta) {
544 psta->sta_xmitpriv.txseq_tid
545 [pattrib->priority]++;
546 psta->sta_xmitpriv.txseq_tid[pattrib->priority]
547 &= 0xFFF;
548 pattrib->seqnum = psta->sta_xmitpriv.
549 txseq_tid[pattrib->priority];
550 SetSeqNum(hdr, pattrib->seqnum);
551 }
552 }
553 }
554 return _SUCCESS;
555 }
556
557 static sint r8712_put_snap(u8 *data, u16 h_proto)
558 {
559 struct ieee80211_snap_hdr *snap;
560 const u8 *oui;
561
562 snap = (struct ieee80211_snap_hdr *)data;
563 snap->dsap = 0xaa;
564 snap->ssap = 0xaa;
565 snap->ctrl = 0x03;
566 if (h_proto == 0x8137 || h_proto == 0x80f3)
567 oui = P802_1H_OUI;
568 else
569 oui = RFC1042_OUI;
570 snap->oui[0] = oui[0];
571 snap->oui[1] = oui[1];
572 snap->oui[2] = oui[2];
573 *(u16 *)(data + SNAP_SIZE) = htons(h_proto);
574 return SNAP_SIZE + sizeof(u16);
575 }
576
577 /*
578 * This sub-routine will perform all the following:
579 * 1. remove 802.3 header.
580 * 2. create wlan_header, based on the info in pxmitframe
581 * 3. append sta's iv/ext-iv
582 * 4. append LLC
583 * 5. move frag chunk from pframe to pxmitframe->mem
584 * 6. apply sw-encrypt, if necessary.
585 */
586 sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt,
587 struct xmit_frame *pxmitframe)
588 {
589 struct pkt_file pktfile;
590
591 sint frg_len, mpdu_len, llc_sz;
592 u32 mem_sz;
593 u8 frg_inx;
594 addr_t addr;
595 u8 *pframe, *mem_start, *ptxdesc;
596 struct sta_info *psta;
597 struct security_priv *psecuritypriv = &padapter->securitypriv;
598 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
599 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
600 struct pkt_attrib *pattrib = &pxmitframe->attrib;
601 u8 *pbuf_start;
602 sint bmcst = IS_MCAST(pattrib->ra);
603
604 if (pattrib->psta == NULL)
605 return _FAIL;
606 psta = pattrib->psta;
607 if (pxmitframe->buf_addr == NULL)
608 return _FAIL;
609 pbuf_start = pxmitframe->buf_addr;
610 ptxdesc = pbuf_start;
611 mem_start = pbuf_start + TXDESC_OFFSET;
612 if (make_wlanhdr(padapter, mem_start, pattrib) == _FAIL)
613 return _FAIL;
614 _r8712_open_pktfile(pkt, &pktfile);
615 _r8712_pktfile_read(&pktfile, NULL, pattrib->pkt_hdrlen);
616 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
617 /* truncate TXDESC_SIZE bytes txcmd if at mp mode for 871x */
618 if (pattrib->ether_type == 0x8712) {
619 /* take care - update_txdesc overwrite this */
620 _r8712_pktfile_read(&pktfile, ptxdesc, TXDESC_SIZE);
621 }
622 }
623 pattrib->pktlen = pktfile.pkt_len;
624 frg_inx = 0;
625 frg_len = pxmitpriv->frag_len - 4;
626 while (1) {
627 llc_sz = 0;
628 mpdu_len = frg_len;
629 pframe = mem_start;
630 SetMFrag(mem_start);
631 pframe += pattrib->hdrlen;
632 mpdu_len -= pattrib->hdrlen;
633 /* adding icv, if necessary...*/
634 if (pattrib->iv_len) {
635 if (psta != NULL) {
636 switch (pattrib->encrypt) {
637 case _WEP40_:
638 case _WEP104_:
639 WEP_IV(pattrib->iv, psta->txpn,
640 (u8)psecuritypriv->
641 PrivacyKeyIndex);
642 break;
643 case _TKIP_:
644 if (bmcst)
645 TKIP_IV(pattrib->iv,
646 psta->txpn,
647 (u8)psecuritypriv->
648 XGrpKeyid);
649 else
650 TKIP_IV(pattrib->iv, psta->txpn,
651 0);
652 break;
653 case _AES_:
654 if (bmcst)
655 AES_IV(pattrib->iv, psta->txpn,
656 (u8)psecuritypriv->
657 XGrpKeyid);
658 else
659 AES_IV(pattrib->iv, psta->txpn,
660 0);
661 break;
662 }
663 }
664 memcpy(pframe, pattrib->iv, pattrib->iv_len);
665 pframe += pattrib->iv_len;
666 mpdu_len -= pattrib->iv_len;
667 }
668 if (frg_inx == 0) {
669 llc_sz = r8712_put_snap(pframe, pattrib->ether_type);
670 pframe += llc_sz;
671 mpdu_len -= llc_sz;
672 }
673 if ((pattrib->icv_len > 0) && (pattrib->bswenc))
674 mpdu_len -= pattrib->icv_len;
675 if (bmcst)
676 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
677 pattrib->pktlen);
678 else
679 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
680 mpdu_len);
681 pframe += mem_sz;
682 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) {
683 memcpy(pframe, pattrib->icv, pattrib->icv_len);
684 pframe += pattrib->icv_len;
685 }
686 frg_inx++;
687 if (bmcst || (r8712_endofpktfile(&pktfile) == true)) {
688 pattrib->nr_frags = frg_inx;
689 pattrib->last_txcmdsz = pattrib->hdrlen +
690 pattrib->iv_len +
691 ((pattrib->nr_frags == 1) ?
692 llc_sz : 0) +
693 ((pattrib->bswenc) ?
694 pattrib->icv_len : 0) + mem_sz;
695 ClearMFrag(mem_start);
696 break;
697 }
698 addr = (addr_t)(pframe);
699 mem_start = (unsigned char *)RND4(addr) + TXDESC_OFFSET;
700 memcpy(mem_start, pbuf_start + TXDESC_OFFSET, pattrib->hdrlen);
701 }
702
703 if (xmitframe_addmic(padapter, pxmitframe) == _FAIL)
704 return _FAIL;
705 xmitframe_swencrypt(padapter, pxmitframe);
706 return _SUCCESS;
707 }
708
709 void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len)
710 {
711 uint protection;
712 u8 *perp;
713 sint erp_len;
714 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
715 struct registry_priv *pregistrypriv = &padapter->registrypriv;
716
717 switch (pxmitpriv->vcs_setting) {
718 case DISABLE_VCS:
719 pxmitpriv->vcs = NONE_VCS;
720 break;
721 case ENABLE_VCS:
722 break;
723 case AUTO_VCS:
724 default:
725 perp = r8712_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len);
726 if (perp == NULL)
727 pxmitpriv->vcs = NONE_VCS;
728 else {
729 protection = (*(perp + 2)) & BIT(1);
730 if (protection) {
731 if (pregistrypriv->vcs_type == RTS_CTS)
732 pxmitpriv->vcs = RTS_CTS;
733 else
734 pxmitpriv->vcs = CTS_TO_SELF;
735 } else
736 pxmitpriv->vcs = NONE_VCS;
737 }
738 break;
739 }
740 }
741
742 struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv)
743 {
744 unsigned long irqL;
745 struct xmit_buf *pxmitbuf = NULL;
746 struct list_head *plist, *phead;
747 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
748
749 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
750 if (_queue_empty(pfree_xmitbuf_queue) == true)
751 pxmitbuf = NULL;
752 else {
753 phead = get_list_head(pfree_xmitbuf_queue);
754 plist = get_next(phead);
755 pxmitbuf = LIST_CONTAINOR(plist, struct xmit_buf, list);
756 list_delete(&(pxmitbuf->list));
757 }
758 if (pxmitbuf != NULL)
759 pxmitpriv->free_xmitbuf_cnt--;
760 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
761 return pxmitbuf;
762 }
763
764 int r8712_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
765 {
766 unsigned long irqL;
767 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
768
769 if (pxmitbuf == NULL)
770 return _FAIL;
771 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
772 list_delete(&pxmitbuf->list);
773 list_insert_tail(&(pxmitbuf->list), get_list_head(pfree_xmitbuf_queue));
774 pxmitpriv->free_xmitbuf_cnt++;
775 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
776 return _SUCCESS;
777 }
778
779 /*
780 Calling context:
781 1. OS_TXENTRY
782 2. RXENTRY (rx_thread or RX_ISR/RX_CallBack)
783
784 If we turn on USE_RXTHREAD, then, no need for critical section.
785 Otherwise, we must use _enter/_exit critical to protect free_xmit_queue...
786
787 Must be very very cautious...
788
789 */
790
791 struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv)
792 {
793 /*
794 Please remember to use all the osdep_service api,
795 and lock/unlock or _enter/_exit critical to protect
796 pfree_xmit_queue
797 */
798 unsigned long irqL;
799 struct xmit_frame *pxframe = NULL;
800 struct list_head *plist, *phead;
801 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
802
803 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
804 if (_queue_empty(pfree_xmit_queue) == true)
805 pxframe = NULL;
806 else {
807 phead = get_list_head(pfree_xmit_queue);
808 plist = get_next(phead);
809 pxframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
810 list_delete(&(pxframe->list));
811 }
812 if (pxframe != NULL) {
813 pxmitpriv->free_xmitframe_cnt--;
814 pxframe->buf_addr = NULL;
815 pxframe->pxmitbuf = NULL;
816 pxframe->attrib.psta = NULL;
817 pxframe->pkt = NULL;
818 }
819 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
820 return pxframe;
821 }
822
823 void r8712_free_xmitframe(struct xmit_priv *pxmitpriv,
824 struct xmit_frame *pxmitframe)
825 {
826 unsigned long irqL;
827 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
828 struct _adapter *padapter = pxmitpriv->adapter;
829
830 if (pxmitframe == NULL)
831 return;
832 if (pxmitframe->pkt)
833 r8712_xmit_complete(padapter, pxmitframe);
834 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
835 list_delete(&pxmitframe->list);
836 list_insert_tail(&pxmitframe->list, get_list_head(pfree_xmit_queue));
837 pxmitpriv->free_xmitframe_cnt++;
838 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
839 if (netif_queue_stopped(padapter->pnetdev))
840 netif_wake_queue(padapter->pnetdev);
841 }
842
843 void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv,
844 struct xmit_frame *pxmitframe)
845 {
846 if (pxmitframe == NULL)
847 return;
848 if (pxmitframe->frame_tag == DATA_FRAMETAG)
849 r8712_free_xmitframe(pxmitpriv, pxmitframe);
850 }
851
852 void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv,
853 struct __queue *pframequeue)
854 {
855 unsigned long irqL;
856 struct list_head *plist, *phead;
857 struct xmit_frame *pxmitframe;
858
859 spin_lock_irqsave(&(pframequeue->lock), irqL);
860 phead = get_list_head(pframequeue);
861 plist = get_next(phead);
862 while (end_of_queue_search(phead, plist) == false) {
863 pxmitframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
864 plist = get_next(plist);
865 r8712_free_xmitframe(pxmitpriv, pxmitframe);
866 }
867 spin_unlock_irqrestore(&(pframequeue->lock), irqL);
868 }
869
870 static inline struct tx_servq *get_sta_pending(struct _adapter *padapter,
871 struct __queue **ppstapending,
872 struct sta_info *psta, sint up)
873 {
874
875 struct tx_servq *ptxservq;
876 struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
877
878 switch (up) {
879 case 1:
880 case 2:
881 ptxservq = &(psta->sta_xmitpriv.bk_q);
882 *ppstapending = &padapter->xmitpriv.bk_pending;
883 (phwxmits+3)->accnt++;
884 break;
885 case 4:
886 case 5:
887 ptxservq = &(psta->sta_xmitpriv.vi_q);
888 *ppstapending = &padapter->xmitpriv.vi_pending;
889 (phwxmits+1)->accnt++;
890 break;
891 case 6:
892 case 7:
893 ptxservq = &(psta->sta_xmitpriv.vo_q);
894 *ppstapending = &padapter->xmitpriv.vo_pending;
895 (phwxmits+0)->accnt++;
896 break;
897 case 0:
898 case 3:
899 default:
900 ptxservq = &(psta->sta_xmitpriv.be_q);
901 *ppstapending = &padapter->xmitpriv.be_pending;
902 (phwxmits + 2)->accnt++;
903 break;
904 }
905 return ptxservq;
906 }
907
908 /*
909 * Will enqueue pxmitframe to the proper queue, and indicate it
910 * to xx_pending list.....
911 */
912 sint r8712_xmit_classifier(struct _adapter *padapter,
913 struct xmit_frame *pxmitframe)
914 {
915 unsigned long irqL0;
916 struct __queue *pstapending;
917 struct sta_info *psta;
918 struct tx_servq *ptxservq;
919 struct pkt_attrib *pattrib = &pxmitframe->attrib;
920 struct sta_priv *pstapriv = &padapter->stapriv;
921 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
922 sint bmcst = IS_MCAST(pattrib->ra);
923
924 if (pattrib->psta)
925 psta = pattrib->psta;
926 else {
927 if (bmcst)
928 psta = r8712_get_bcmc_stainfo(padapter);
929 else {
930 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
931 psta = r8712_get_stainfo(pstapriv,
932 get_bssid(pmlmepriv));
933 else
934 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
935 }
936 }
937 if (psta == NULL)
938 return _FAIL;
939 ptxservq = get_sta_pending(padapter, &pstapending,
940 psta, pattrib->priority);
941 spin_lock_irqsave(&pstapending->lock, irqL0);
942 if (is_list_empty(&ptxservq->tx_pending))
943 list_insert_tail(&ptxservq->tx_pending,
944 get_list_head(pstapending));
945 list_insert_tail(&pxmitframe->list,
946 get_list_head(&ptxservq->sta_pending));
947 ptxservq->qcnt++;
948 spin_unlock_irqrestore(&pstapending->lock, irqL0);
949 return _SUCCESS;
950 }
951
952 static void alloc_hwxmits(struct _adapter *padapter)
953 {
954 struct hw_xmit *hwxmits;
955 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
956
957 pxmitpriv->hwxmit_entry = HWXMIT_ENTRY;
958 pxmitpriv->hwxmits = (struct hw_xmit *)_malloc(sizeof(struct hw_xmit) *
959 pxmitpriv->hwxmit_entry);
960 if (pxmitpriv->hwxmits == NULL)
961 return;
962 hwxmits = pxmitpriv->hwxmits;
963 if (pxmitpriv->hwxmit_entry == 5) {
964 pxmitpriv->bmc_txqueue.head = 0;
965 hwxmits[0] .phwtxqueue = &pxmitpriv->bmc_txqueue;
966 hwxmits[0] .sta_queue = &pxmitpriv->bm_pending;
967 pxmitpriv->vo_txqueue.head = 0;
968 hwxmits[1] .phwtxqueue = &pxmitpriv->vo_txqueue;
969 hwxmits[1] .sta_queue = &pxmitpriv->vo_pending;
970 pxmitpriv->vi_txqueue.head = 0;
971 hwxmits[2] .phwtxqueue = &pxmitpriv->vi_txqueue;
972 hwxmits[2] .sta_queue = &pxmitpriv->vi_pending;
973 pxmitpriv->bk_txqueue.head = 0;
974 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
975 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
976 pxmitpriv->be_txqueue.head = 0;
977 hwxmits[4] .phwtxqueue = &pxmitpriv->be_txqueue;
978 hwxmits[4] .sta_queue = &pxmitpriv->be_pending;
979 } else if (pxmitpriv->hwxmit_entry == 4) {
980 pxmitpriv->vo_txqueue.head = 0;
981 hwxmits[0] .phwtxqueue = &pxmitpriv->vo_txqueue;
982 hwxmits[0] .sta_queue = &pxmitpriv->vo_pending;
983 pxmitpriv->vi_txqueue.head = 0;
984 hwxmits[1] .phwtxqueue = &pxmitpriv->vi_txqueue;
985 hwxmits[1] .sta_queue = &pxmitpriv->vi_pending;
986 pxmitpriv->be_txqueue.head = 0;
987 hwxmits[2] .phwtxqueue = &pxmitpriv->be_txqueue;
988 hwxmits[2] .sta_queue = &pxmitpriv->be_pending;
989 pxmitpriv->bk_txqueue.head = 0;
990 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
991 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
992 }
993 }
994
995 static void free_hwxmits(struct _adapter *padapter)
996 {
997 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
998
999 kfree(pxmitpriv->hwxmits);
1000 }
1001
1002 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry)
1003 {
1004 sint i;
1005
1006 for (i = 0; i < entry; i++, phwxmit++) {
1007 spin_lock_init(&phwxmit->xmit_lock);
1008 _init_listhead(&phwxmit->pending);
1009 phwxmit->txcmdcnt = 0;
1010 phwxmit->accnt = 0;
1011 }
1012 }
1013
1014 /*
1015 * tx_action == 0 == no frames to transmit
1016 * tx_action > 0 ==> we have frames to transmit
1017 * tx_action < 0 ==> we have frames to transmit, but TXFF is not even enough
1018 * to transmit 1 frame.
1019 */
1020
1021 int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe)
1022 {
1023 unsigned long irqL;
1024 int ret;
1025 struct xmit_buf *pxmitbuf = NULL;
1026 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1027 struct pkt_attrib *pattrib = &pxmitframe->attrib;
1028
1029 r8712_do_queue_select(padapter, pattrib);
1030 spin_lock_irqsave(&pxmitpriv->lock, irqL);
1031 if (r8712_txframes_sta_ac_pending(padapter, pattrib) > 0) {
1032 ret = false;
1033 r8712_xmit_enqueue(padapter, pxmitframe);
1034 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1035 return ret;
1036 }
1037 pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv);
1038 if (pxmitbuf == NULL) { /*enqueue packet*/
1039 ret = false;
1040 r8712_xmit_enqueue(padapter, pxmitframe);
1041 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1042 } else { /*dump packet directly*/
1043 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1044 ret = true;
1045 pxmitframe->pxmitbuf = pxmitbuf;
1046 pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
1047 pxmitframe->buf_addr = pxmitbuf->pbuf;
1048 r8712_xmit_direct(padapter, pxmitframe);
1049 }
1050 return ret;
1051 }
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