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
_init_txservq(struct tx_servq * ptxservq)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
_r8712_init_sta_xmit_priv(struct sta_xmit_priv * psta_xmitpriv)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
_r8712_init_xmit_priv(struct xmit_priv * pxmitpriv,struct _adapter * padapter)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 /*
75 Please insert all the queue initializaiton using _init_queue below
76 */
77 pxmitpriv->adapter = padapter;
78 _init_queue(&pxmitpriv->be_pending);
79 _init_queue(&pxmitpriv->bk_pending);
80 _init_queue(&pxmitpriv->vi_pending);
81 _init_queue(&pxmitpriv->vo_pending);
82 _init_queue(&pxmitpriv->bm_pending);
83 _init_queue(&pxmitpriv->legacy_dz_queue);
84 _init_queue(&pxmitpriv->apsd_queue);
85 _init_queue(&pxmitpriv->free_xmit_queue);
86 /*
87 Please allocate memory with the sz = (struct xmit_frame) * NR_XMITFRAME,
88 and initialize free_xmit_frame below.
89 Please also apply free_txobj to link_up all the xmit_frames...
90 */
91 pxmitpriv->pallocated_frame_buf = _malloc(NR_XMITFRAME *
92 sizeof(struct xmit_frame) + 4);
93 if (pxmitpriv->pallocated_frame_buf == NULL) {
94 pxmitpriv->pxmit_frame_buf = NULL;
95 return _FAIL;
96 }
97 pxmitpriv->pxmit_frame_buf = pxmitpriv->pallocated_frame_buf + 4 -
98 ((addr_t) (pxmitpriv->pallocated_frame_buf) & 3);
99 pxframe = (struct xmit_frame *) pxmitpriv->pxmit_frame_buf;
100 for (i = 0; i < NR_XMITFRAME; i++) {
101 _init_listhead(&(pxframe->list));
102 pxframe->padapter = padapter;
103 pxframe->frame_tag = DATA_FRAMETAG;
104 pxframe->pkt = NULL;
105 pxframe->buf_addr = NULL;
106 pxframe->pxmitbuf = NULL;
107 list_insert_tail(&(pxframe->list),
108 &(pxmitpriv->free_xmit_queue.queue));
109 pxframe++;
110 }
111 pxmitpriv->free_xmitframe_cnt = NR_XMITFRAME;
112 /*
113 init xmit hw_txqueue
114 */
115 _r8712_init_hw_txqueue(&pxmitpriv->be_txqueue, BE_QUEUE_INX);
116 _r8712_init_hw_txqueue(&pxmitpriv->bk_txqueue, BK_QUEUE_INX);
117 _r8712_init_hw_txqueue(&pxmitpriv->vi_txqueue, VI_QUEUE_INX);
118 _r8712_init_hw_txqueue(&pxmitpriv->vo_txqueue, VO_QUEUE_INX);
119 _r8712_init_hw_txqueue(&pxmitpriv->bmc_txqueue, BMC_QUEUE_INX);
120 pxmitpriv->frag_len = MAX_FRAG_THRESHOLD;
121 pxmitpriv->txirp_cnt = 1;
122 /*per AC pending irp*/
123 pxmitpriv->beq_cnt = 0;
124 pxmitpriv->bkq_cnt = 0;
125 pxmitpriv->viq_cnt = 0;
126 pxmitpriv->voq_cnt = 0;
127 /*init xmit_buf*/
128 _init_queue(&pxmitpriv->free_xmitbuf_queue);
129 _init_queue(&pxmitpriv->pending_xmitbuf_queue);
130 pxmitpriv->pallocated_xmitbuf = _malloc(NR_XMITBUFF *
131 sizeof(struct xmit_buf) + 4);
132 if (pxmitpriv->pallocated_xmitbuf == NULL)
133 return _FAIL;
134 pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 -
135 ((addr_t)(pxmitpriv->pallocated_xmitbuf) & 3);
136 pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
137 for (i = 0; i < NR_XMITBUFF; i++) {
138 _init_listhead(&pxmitbuf->list);
139 pxmitbuf->pallocated_buf = _malloc(MAX_XMITBUF_SZ +
140 XMITBUF_ALIGN_SZ);
141 if (pxmitbuf->pallocated_buf == NULL)
142 return _FAIL;
143 pxmitbuf->pbuf = pxmitbuf->pallocated_buf + XMITBUF_ALIGN_SZ -
144 ((addr_t) (pxmitbuf->pallocated_buf) &
145 (XMITBUF_ALIGN_SZ - 1));
146 r8712_xmit_resource_alloc(padapter, pxmitbuf);
147 list_insert_tail(&pxmitbuf->list,
148 &(pxmitpriv->free_xmitbuf_queue.queue));
149 pxmitbuf++;
150 }
151 pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF;
152 _init_workitem(&padapter->wkFilterRxFF0, r8712_SetFilter, padapter);
153 alloc_hwxmits(padapter);
154 init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
155 tasklet_init(&pxmitpriv->xmit_tasklet,
156 (void(*)(unsigned long))r8712_xmit_bh,
157 (unsigned long)padapter);
158 return _SUCCESS;
159 }
160
_free_xmit_priv(struct xmit_priv * pxmitpriv)161 void _free_xmit_priv(struct xmit_priv *pxmitpriv)
162 {
163 int i;
164 struct _adapter *padapter = pxmitpriv->adapter;
165 struct xmit_frame *pxmitframe = (struct xmit_frame *)
166 pxmitpriv->pxmit_frame_buf;
167 struct xmit_buf *pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
168
169 if (pxmitpriv->pxmit_frame_buf == NULL)
170 return;
171 for (i = 0; i < NR_XMITFRAME; i++) {
172 r8712_xmit_complete(padapter, pxmitframe);
173 pxmitframe++;
174 }
175 for (i = 0; i < NR_XMITBUFF; i++) {
176 r8712_xmit_resource_free(padapter, pxmitbuf);
177 kfree(pxmitbuf->pallocated_buf);
178 pxmitbuf++;
179 }
180 kfree(pxmitpriv->pallocated_frame_buf);
181 kfree(pxmitpriv->pallocated_xmitbuf);
182 free_hwxmits(padapter);
183 }
184
r8712_update_attrib(struct _adapter * padapter,_pkt * pkt,struct pkt_attrib * pattrib)185 sint r8712_update_attrib(struct _adapter *padapter, _pkt *pkt,
186 struct pkt_attrib *pattrib)
187 {
188 uint i;
189 struct pkt_file pktfile;
190 struct sta_info *psta = NULL;
191 struct ethhdr etherhdr;
192
193 struct tx_cmd txdesc;
194
195 sint bmcast;
196 struct sta_priv *pstapriv = &padapter->stapriv;
197 struct security_priv *psecuritypriv = &padapter->securitypriv;
198 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
199 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
200
201 _r8712_open_pktfile(pkt, &pktfile);
202
203 i = _r8712_pktfile_read(&pktfile, (unsigned char *)ðerhdr, ETH_HLEN);
204
205 pattrib->ether_type = ntohs(etherhdr.h_proto);
206
207 {
208 u8 bool;
209 /*If driver xmit ARP packet, driver can set ps mode to initial
210 * setting. It stands for getting DHCP or fix IP.*/
211 if (pattrib->ether_type == 0x0806) {
212 if (padapter->pwrctrlpriv.pwr_mode !=
213 padapter->registrypriv.power_mgnt) {
214 _cancel_timer(&(pmlmepriv->dhcp_timer), &bool);
215 r8712_set_ps_mode(padapter, padapter->registrypriv.
216 power_mgnt, padapter->registrypriv.smart_ps);
217 }
218 }
219 }
220 memcpy(pattrib->dst, ðerhdr.h_dest, ETH_ALEN);
221 memcpy(pattrib->src, ðerhdr.h_source, ETH_ALEN);
222 pattrib->pctrl = 0;
223 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
224 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
225 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
226 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
227 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
228 memcpy(pattrib->ra, get_bssid(pmlmepriv), ETH_ALEN);
229 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
230 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
231 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
232 memcpy(pattrib->ta, get_bssid(pmlmepriv), ETH_ALEN);
233 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
234 /*firstly, filter packet not belongs to mp*/
235 if (pattrib->ether_type != 0x8712)
236 return _FAIL;
237 /* for mp storing the txcmd per packet,
238 * according to the info of txcmd to update pattrib */
239 /*get MP_TXDESC_SIZE bytes txcmd per packet*/
240 i = _r8712_pktfile_read(&pktfile, (u8 *)&txdesc, TXDESC_SIZE);
241 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
242 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
243 pattrib->pctrl = 1;
244 }
245 /* r8712_xmitframe_coalesce() overwrite this!*/
246 pattrib->pktlen = pktfile.pkt_len;
247 if (ETH_P_IP == pattrib->ether_type) {
248 /* The following is for DHCP and ARP packet, we use cck1M to
249 * tx these packets and let LPS awake some time
250 * to prevent DHCP protocol fail */
251 u8 tmp[24];
252 _r8712_pktfile_read(&pktfile, &tmp[0], 24);
253 pattrib->dhcp_pkt = 0;
254 if (pktfile.pkt_len > 282) {/*MINIMUM_DHCP_PACKET_SIZE)*/
255 if (ETH_P_IP == pattrib->ether_type) {/* IP header*/
256 if (((tmp[21] == 68) && (tmp[23] == 67)) ||
257 ((tmp[21] == 67) && (tmp[23] == 68))) {
258 /* 68 : UDP BOOTP client
259 * 67 : UDP BOOTP server
260 * Use low rate to send DHCP packet.*/
261 pattrib->dhcp_pkt = 1;
262 }
263 }
264 }
265 }
266 bmcast = IS_MCAST(pattrib->ra);
267 /* get sta_info*/
268 if (bmcast) {
269 psta = r8712_get_bcmc_stainfo(padapter);
270 pattrib->mac_id = 4;
271 } else {
272 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
273 psta = r8712_get_stainfo(pstapriv,
274 get_bssid(pmlmepriv));
275 pattrib->mac_id = 5;
276 } else {
277 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
278 if (psta == NULL) /* drop the pkt */
279 return _FAIL;
280 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE))
281 pattrib->mac_id = 5;
282 else
283 pattrib->mac_id = psta->mac_id;
284 }
285 }
286
287 if (psta) {
288 pattrib->psta = psta;
289 } else {
290 /* if we cannot get psta => drrp the pkt */
291 return _FAIL;
292 }
293
294 pattrib->ack_policy = 0;
295 /* get ether_hdr_len */
296 pattrib->pkt_hdrlen = ETH_HLEN;
297
298 if (pqospriv->qos_option)
299 r8712_set_qos(&pktfile, pattrib);
300 else {
301 pattrib->hdrlen = WLAN_HDR_A3_LEN;
302 pattrib->subtype = WIFI_DATA_TYPE;
303 pattrib->priority = 0;
304 }
305 if (psta->ieee8021x_blocked == true) {
306 pattrib->encrypt = 0;
307 if ((pattrib->ether_type != 0x888e) &&
308 (check_fwstate(pmlmepriv, WIFI_MP_STATE) == false))
309 return _FAIL;
310 } else
311 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast);
312 switch (pattrib->encrypt) {
313 case _WEP40_:
314 case _WEP104_:
315 pattrib->iv_len = 4;
316 pattrib->icv_len = 4;
317 break;
318 case _TKIP_:
319 pattrib->iv_len = 8;
320 pattrib->icv_len = 4;
321 if (padapter->securitypriv.busetkipkey == _FAIL)
322 return _FAIL;
323 break;
324 case _AES_:
325 pattrib->iv_len = 8;
326 pattrib->icv_len = 8;
327 break;
328 default:
329 pattrib->iv_len = 0;
330 pattrib->icv_len = 0;
331 break;
332 }
333
334 if (pattrib->encrypt &&
335 ((padapter->securitypriv.sw_encrypt == true) ||
336 (psecuritypriv->hw_decrypted == false)))
337 pattrib->bswenc = true;
338 else
339 pattrib->bswenc = false;
340 /* if in MP_STATE, update pkt_attrib from mp_txcmd, and overwrite
341 * some settings above.*/
342 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
343 pattrib->priority = (txdesc.txdw1 >> QSEL_SHT) & 0x1f;
344 return _SUCCESS;
345 }
346
xmitframe_addmic(struct _adapter * padapter,struct xmit_frame * pxmitframe)347 static sint xmitframe_addmic(struct _adapter *padapter,
348 struct xmit_frame *pxmitframe)
349 {
350 u32 curfragnum, length, datalen;
351 u8 *pframe, *payload, mic[8];
352 struct mic_data micdata;
353 struct sta_info *stainfo;
354 struct qos_priv *pqospriv = &(padapter->mlmepriv.qospriv);
355 struct pkt_attrib *pattrib = &pxmitframe->attrib;
356 struct security_priv *psecuritypriv = &padapter->securitypriv;
357 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
358 u8 priority[4] = {0x0, 0x0, 0x0, 0x0};
359 sint bmcst = IS_MCAST(pattrib->ra);
360
361 if (pattrib->psta)
362 stainfo = pattrib->psta;
363 else
364 stainfo = r8712_get_stainfo(&padapter->stapriv,
365 &pattrib->ra[0]);
366 if (pattrib->encrypt == _TKIP_) {
367 /*encode mic code*/
368 if (stainfo != NULL) {
369 u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
370 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
371 0x0, 0x0};
372 datalen = pattrib->pktlen - pattrib->hdrlen;
373 pframe = pxmitframe->buf_addr + TXDESC_OFFSET;
374 if (bmcst) {
375 if (!memcmp(psecuritypriv->XGrptxmickey
376 [psecuritypriv->XGrpKeyid].skey,
377 null_key, 16))
378 return _FAIL;
379 /*start to calculate the mic code*/
380 r8712_secmicsetkey(&micdata,
381 psecuritypriv->
382 XGrptxmickey[psecuritypriv->
383 XGrpKeyid].skey);
384 } else {
385 if (!memcmp(&stainfo->tkiptxmickey.skey[0],
386 null_key, 16))
387 return _FAIL;
388 /* start to calculate the mic code */
389 r8712_secmicsetkey(&micdata,
390 &stainfo->tkiptxmickey.skey[0]);
391 }
392 if (pframe[1] & 1) { /* ToDS==1 */
393 r8712_secmicappend(&micdata,
394 &pframe[16], 6); /*DA*/
395 if (pframe[1]&2) /* From Ds==1 */
396 r8712_secmicappend(&micdata,
397 &pframe[24], 6);
398 else
399 r8712_secmicappend(&micdata,
400 &pframe[10], 6);
401 } else { /* ToDS==0 */
402 r8712_secmicappend(&micdata,
403 &pframe[4], 6); /* DA */
404 if (pframe[1]&2) /* From Ds==1 */
405 r8712_secmicappend(&micdata,
406 &pframe[16], 6);
407 else
408 r8712_secmicappend(&micdata,
409 &pframe[10], 6);
410 }
411 if (pqospriv->qos_option == 1)
412 priority[0] = (u8)pxmitframe->
413 attrib.priority;
414 r8712_secmicappend(&micdata, &priority[0], 4);
415 payload = pframe;
416 for (curfragnum = 0; curfragnum < pattrib->nr_frags;
417 curfragnum++) {
418 payload = (u8 *)RND4((addr_t)(payload));
419 payload = payload+pattrib->
420 hdrlen+pattrib->iv_len;
421 if ((curfragnum + 1) == pattrib->nr_frags) {
422 length = pattrib->last_txcmdsz -
423 pattrib->hdrlen -
424 pattrib->iv_len -
425 ((psecuritypriv->sw_encrypt)
426 ? pattrib->icv_len : 0);
427 r8712_secmicappend(&micdata, payload,
428 length);
429 payload = payload+length;
430 } else{
431 length = pxmitpriv->frag_len -
432 pattrib->hdrlen-pattrib->iv_len -
433 ((psecuritypriv->sw_encrypt) ?
434 pattrib->icv_len : 0);
435 r8712_secmicappend(&micdata, payload,
436 length);
437 payload = payload + length +
438 pattrib->icv_len;
439 }
440 }
441 r8712_secgetmic(&micdata, &(mic[0]));
442 /* add mic code and add the mic code length in
443 * last_txcmdsz */
444 memcpy(payload, &(mic[0]), 8);
445 pattrib->last_txcmdsz += 8;
446 payload = payload-pattrib->last_txcmdsz + 8;
447 }
448 }
449 return _SUCCESS;
450 }
451
xmitframe_swencrypt(struct _adapter * padapter,struct xmit_frame * pxmitframe)452 static sint xmitframe_swencrypt(struct _adapter *padapter,
453 struct xmit_frame *pxmitframe)
454 {
455 struct pkt_attrib *pattrib = &pxmitframe->attrib;
456
457 if (pattrib->bswenc) {
458 switch (pattrib->encrypt) {
459 case _WEP40_:
460 case _WEP104_:
461 r8712_wep_encrypt(padapter, (u8 *)pxmitframe);
462 break;
463 case _TKIP_:
464 r8712_tkip_encrypt(padapter, (u8 *)pxmitframe);
465 break;
466 case _AES_:
467 r8712_aes_encrypt(padapter, (u8 *)pxmitframe);
468 break;
469 default:
470 break;
471 }
472 }
473 return _SUCCESS;
474 }
475
make_wlanhdr(struct _adapter * padapter,u8 * hdr,struct pkt_attrib * pattrib)476 static sint make_wlanhdr(struct _adapter *padapter , u8 *hdr,
477 struct pkt_attrib *pattrib)
478 {
479 u16 *qc;
480
481 struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr;
482 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
483 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
484 u16 *fctrl = &pwlanhdr->frame_ctl;
485 memset(hdr, 0, WLANHDR_OFFSET);
486 SetFrameSubType(fctrl, pattrib->subtype);
487 if (pattrib->subtype & WIFI_DATA_TYPE) {
488 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true)) {
489 /* to_ds = 1, fr_ds = 0; */
490 SetToDs(fctrl);
491 memcpy(pwlanhdr->addr1, get_bssid(pmlmepriv),
492 ETH_ALEN);
493 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
494 memcpy(pwlanhdr->addr3, pattrib->dst, ETH_ALEN);
495 } else if ((check_fwstate(pmlmepriv, WIFI_AP_STATE) == true)) {
496 /* to_ds = 0, fr_ds = 1; */
497 SetFrDs(fctrl);
498 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
499 memcpy(pwlanhdr->addr2, get_bssid(pmlmepriv),
500 ETH_ALEN);
501 memcpy(pwlanhdr->addr3, pattrib->src, ETH_ALEN);
502 } else if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true)
503 || (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)
504 == true)) {
505 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
506 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
507 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
508 ETH_ALEN);
509 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
510 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
511 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
512 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
513 ETH_ALEN);
514 } else
515 return _FAIL;
516
517 if (pattrib->encrypt)
518 SetPrivacy(fctrl);
519 if (pqospriv->qos_option) {
520 qc = (unsigned short *)(hdr + pattrib->hdrlen - 2);
521 if (pattrib->priority)
522 SetPriority(qc, pattrib->priority);
523 SetAckpolicy(qc, pattrib->ack_policy);
524 }
525 /* TODO: fill HT Control Field */
526 /* Update Seq Num will be handled by f/w */
527 {
528 struct sta_info *psta;
529
530 sint bmcst = IS_MCAST(pattrib->ra);
531 if (pattrib->psta)
532 psta = pattrib->psta;
533 else {
534 if (bmcst)
535 psta = r8712_get_bcmc_stainfo(padapter);
536 else
537 psta =
538 r8712_get_stainfo(&padapter->stapriv,
539 pattrib->ra);
540 }
541 if (psta) {
542 psta->sta_xmitpriv.txseq_tid
543 [pattrib->priority]++;
544 psta->sta_xmitpriv.txseq_tid[pattrib->priority]
545 &= 0xFFF;
546 pattrib->seqnum = psta->sta_xmitpriv.
547 txseq_tid[pattrib->priority];
548 SetSeqNum(hdr, pattrib->seqnum);
549 }
550 }
551 }
552 return _SUCCESS;
553 }
554
r8712_put_snap(u8 * data,u16 h_proto)555 static sint r8712_put_snap(u8 *data, u16 h_proto)
556 {
557 struct ieee80211_snap_hdr *snap;
558 const u8 *oui;
559
560 snap = (struct ieee80211_snap_hdr *)data;
561 snap->dsap = 0xaa;
562 snap->ssap = 0xaa;
563 snap->ctrl = 0x03;
564 if (h_proto == 0x8137 || h_proto == 0x80f3)
565 oui = P802_1H_OUI;
566 else
567 oui = RFC1042_OUI;
568 snap->oui[0] = oui[0];
569 snap->oui[1] = oui[1];
570 snap->oui[2] = oui[2];
571 *(u16 *)(data + SNAP_SIZE) = htons(h_proto);
572 return SNAP_SIZE + sizeof(u16);
573 }
574
575 /*
576 * This sub-routine will perform all the following:
577 * 1. remove 802.3 header.
578 * 2. create wlan_header, based on the info in pxmitframe
579 * 3. append sta's iv/ext-iv
580 * 4. append LLC
581 * 5. move frag chunk from pframe to pxmitframe->mem
582 * 6. apply sw-encrypt, if necessary.
583 */
r8712_xmitframe_coalesce(struct _adapter * padapter,_pkt * pkt,struct xmit_frame * pxmitframe)584 sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt,
585 struct xmit_frame *pxmitframe)
586 {
587 struct pkt_file pktfile;
588
589 sint frg_len, mpdu_len, llc_sz;
590 u32 mem_sz;
591 u8 frg_inx;
592 addr_t addr;
593 u8 *pframe, *mem_start, *ptxdesc;
594 struct sta_info *psta;
595 struct security_priv *psecuritypriv = &padapter->securitypriv;
596 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
597 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
598 struct pkt_attrib *pattrib = &pxmitframe->attrib;
599 u8 *pbuf_start;
600 sint bmcst = IS_MCAST(pattrib->ra);
601
602 if (pattrib->psta == NULL)
603 return _FAIL;
604 psta = pattrib->psta;
605 if (pxmitframe->buf_addr == NULL)
606 return _FAIL;
607 pbuf_start = pxmitframe->buf_addr;
608 ptxdesc = pbuf_start;
609 mem_start = pbuf_start + TXDESC_OFFSET;
610 if (make_wlanhdr(padapter, mem_start, pattrib) == _FAIL)
611 return _FAIL;
612 _r8712_open_pktfile(pkt, &pktfile);
613 _r8712_pktfile_read(&pktfile, NULL, (uint) pattrib->pkt_hdrlen);
614 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
615 /* truncate TXDESC_SIZE bytes txcmd if at mp mode for 871x */
616 if (pattrib->ether_type == 0x8712) {
617 /* take care - update_txdesc overwrite this */
618 _r8712_pktfile_read(&pktfile, ptxdesc, TXDESC_SIZE);
619 }
620 }
621 pattrib->pktlen = pktfile.pkt_len;
622 frg_inx = 0;
623 frg_len = pxmitpriv->frag_len - 4;
624 while (1) {
625 llc_sz = 0;
626 mpdu_len = frg_len;
627 pframe = mem_start;
628 SetMFrag(mem_start);
629 pframe += pattrib->hdrlen;
630 mpdu_len -= pattrib->hdrlen;
631 /* adding icv, if necessary...*/
632 if (pattrib->iv_len) {
633 if (psta != NULL) {
634 switch (pattrib->encrypt) {
635 case _WEP40_:
636 case _WEP104_:
637 WEP_IV(pattrib->iv, psta->txpn,
638 (u8)psecuritypriv->
639 PrivacyKeyIndex);
640 break;
641 case _TKIP_:
642 if (bmcst)
643 TKIP_IV(pattrib->iv,
644 psta->txpn,
645 (u8)psecuritypriv->
646 XGrpKeyid);
647 else
648 TKIP_IV(pattrib->iv, psta->txpn,
649 0);
650 break;
651 case _AES_:
652 if (bmcst)
653 AES_IV(pattrib->iv, psta->txpn,
654 (u8)psecuritypriv->
655 XGrpKeyid);
656 else
657 AES_IV(pattrib->iv, psta->txpn,
658 0);
659 break;
660 }
661 }
662 memcpy(pframe, pattrib->iv, pattrib->iv_len);
663 pframe += pattrib->iv_len;
664 mpdu_len -= pattrib->iv_len;
665 }
666 if (frg_inx == 0) {
667 llc_sz = r8712_put_snap(pframe, pattrib->ether_type);
668 pframe += llc_sz;
669 mpdu_len -= llc_sz;
670 }
671 if ((pattrib->icv_len > 0) && (pattrib->bswenc))
672 mpdu_len -= pattrib->icv_len;
673 if (bmcst)
674 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
675 pattrib->pktlen);
676 else
677 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
678 mpdu_len);
679 pframe += mem_sz;
680 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) {
681 memcpy(pframe, pattrib->icv, pattrib->icv_len);
682 pframe += pattrib->icv_len;
683 }
684 frg_inx++;
685 if (bmcst || (r8712_endofpktfile(&pktfile) == true)) {
686 pattrib->nr_frags = frg_inx;
687 pattrib->last_txcmdsz = pattrib->hdrlen +
688 pattrib->iv_len +
689 ((pattrib->nr_frags == 1) ?
690 llc_sz : 0) +
691 ((pattrib->bswenc) ?
692 pattrib->icv_len : 0) + mem_sz;
693 ClearMFrag(mem_start);
694 break;
695 }
696 addr = (addr_t)(pframe);
697 mem_start = (unsigned char *)RND4(addr) + TXDESC_OFFSET;
698 memcpy(mem_start, pbuf_start + TXDESC_OFFSET, pattrib->hdrlen);
699 }
700
701 if (xmitframe_addmic(padapter, pxmitframe) == _FAIL)
702 return _FAIL;
703 xmitframe_swencrypt(padapter, pxmitframe);
704 return _SUCCESS;
705 }
706
r8712_update_protection(struct _adapter * padapter,u8 * ie,uint ie_len)707 void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len)
708 {
709 uint protection;
710 u8 *perp;
711 sint erp_len;
712 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
713 struct registry_priv *pregistrypriv = &padapter->registrypriv;
714
715 switch (pxmitpriv->vcs_setting) {
716 case DISABLE_VCS:
717 pxmitpriv->vcs = NONE_VCS;
718 break;
719 case ENABLE_VCS:
720 break;
721 case AUTO_VCS:
722 default:
723 perp = r8712_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len);
724 if (perp == NULL)
725 pxmitpriv->vcs = NONE_VCS;
726 else {
727 protection = (*(perp + 2)) & BIT(1);
728 if (protection) {
729 if (pregistrypriv->vcs_type == RTS_CTS)
730 pxmitpriv->vcs = RTS_CTS;
731 else
732 pxmitpriv->vcs = CTS_TO_SELF;
733 } else
734 pxmitpriv->vcs = NONE_VCS;
735 }
736 break;
737 }
738 }
739
r8712_alloc_xmitbuf(struct xmit_priv * pxmitpriv)740 struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv)
741 {
742 unsigned long irqL;
743 struct xmit_buf *pxmitbuf = NULL;
744 struct list_head *plist, *phead;
745 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
746
747 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
748 if (_queue_empty(pfree_xmitbuf_queue) == true)
749 pxmitbuf = NULL;
750 else {
751 phead = get_list_head(pfree_xmitbuf_queue);
752 plist = get_next(phead);
753 pxmitbuf = LIST_CONTAINOR(plist, struct xmit_buf, list);
754 list_delete(&(pxmitbuf->list));
755 }
756 if (pxmitbuf != NULL)
757 pxmitpriv->free_xmitbuf_cnt--;
758 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
759 return pxmitbuf;
760 }
761
r8712_free_xmitbuf(struct xmit_priv * pxmitpriv,struct xmit_buf * pxmitbuf)762 int r8712_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
763 {
764 unsigned long irqL;
765 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
766
767 if (pxmitbuf == NULL)
768 return _FAIL;
769 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
770 list_delete(&pxmitbuf->list);
771 list_insert_tail(&(pxmitbuf->list), get_list_head(pfree_xmitbuf_queue));
772 pxmitpriv->free_xmitbuf_cnt++;
773 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
774 return _SUCCESS;
775 }
776
777 /*
778 Calling context:
779 1. OS_TXENTRY
780 2. RXENTRY (rx_thread or RX_ISR/RX_CallBack)
781
782 If we turn on USE_RXTHREAD, then, no need for critical section.
783 Otherwise, we must use _enter/_exit critical to protect free_xmit_queue...
784
785 Must be very very cautious...
786
787 */
788
r8712_alloc_xmitframe(struct xmit_priv * pxmitpriv)789 struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv)
790 {
791 /*
792 Please remember to use all the osdep_service api,
793 and lock/unlock or _enter/_exit critical to protect
794 pfree_xmit_queue
795 */
796 unsigned long irqL;
797 struct xmit_frame *pxframe = NULL;
798 struct list_head *plist, *phead;
799 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
800
801 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
802 if (_queue_empty(pfree_xmit_queue) == true)
803 pxframe = NULL;
804 else {
805 phead = get_list_head(pfree_xmit_queue);
806 plist = get_next(phead);
807 pxframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
808 list_delete(&(pxframe->list));
809 }
810 if (pxframe != NULL) {
811 pxmitpriv->free_xmitframe_cnt--;
812 pxframe->buf_addr = NULL;
813 pxframe->pxmitbuf = NULL;
814 pxframe->attrib.psta = NULL;
815 pxframe->pkt = NULL;
816 }
817 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
818 return pxframe;
819 }
820
r8712_free_xmitframe(struct xmit_priv * pxmitpriv,struct xmit_frame * pxmitframe)821 void r8712_free_xmitframe(struct xmit_priv *pxmitpriv,
822 struct xmit_frame *pxmitframe)
823 {
824 unsigned long irqL;
825 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
826 struct _adapter *padapter = pxmitpriv->adapter;
827 struct sk_buff *pndis_pkt = NULL;
828
829 if (pxmitframe == NULL)
830 return;
831 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
832 list_delete(&pxmitframe->list);
833 if (pxmitframe->pkt) {
834 pndis_pkt = pxmitframe->pkt;
835 pxmitframe->pkt = NULL;
836 }
837 list_insert_tail(&pxmitframe->list, get_list_head(pfree_xmit_queue));
838 pxmitpriv->free_xmitframe_cnt++;
839 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
840 if (netif_queue_stopped(padapter->pnetdev))
841 netif_wake_queue(padapter->pnetdev);
842 }
843
r8712_free_xmitframe_ex(struct xmit_priv * pxmitpriv,struct xmit_frame * pxmitframe)844 void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv,
845 struct xmit_frame *pxmitframe)
846 {
847 if (pxmitframe == NULL)
848 return;
849 if (pxmitframe->frame_tag == DATA_FRAMETAG)
850 r8712_free_xmitframe(pxmitpriv, pxmitframe);
851 }
852
r8712_free_xmitframe_queue(struct xmit_priv * pxmitpriv,struct __queue * pframequeue)853 void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv,
854 struct __queue *pframequeue)
855 {
856 unsigned long irqL;
857 struct list_head *plist, *phead;
858 struct xmit_frame *pxmitframe;
859
860 spin_lock_irqsave(&(pframequeue->lock), irqL);
861 phead = get_list_head(pframequeue);
862 plist = get_next(phead);
863 while (end_of_queue_search(phead, plist) == false) {
864 pxmitframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
865 plist = get_next(plist);
866 r8712_free_xmitframe(pxmitpriv, pxmitframe);
867 }
868 spin_unlock_irqrestore(&(pframequeue->lock), irqL);
869 }
870
get_sta_pending(struct _adapter * padapter,struct __queue ** ppstapending,struct sta_info * psta,sint up)871 static inline struct tx_servq *get_sta_pending(struct _adapter *padapter,
872 struct __queue **ppstapending,
873 struct sta_info *psta, sint up)
874 {
875
876 struct tx_servq *ptxservq;
877 struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
878
879 switch (up) {
880 case 1:
881 case 2:
882 ptxservq = &(psta->sta_xmitpriv.bk_q);
883 *ppstapending = &padapter->xmitpriv.bk_pending;
884 (phwxmits+3)->accnt++;
885 break;
886 case 4:
887 case 5:
888 ptxservq = &(psta->sta_xmitpriv.vi_q);
889 *ppstapending = &padapter->xmitpriv.vi_pending;
890 (phwxmits+1)->accnt++;
891 break;
892 case 6:
893 case 7:
894 ptxservq = &(psta->sta_xmitpriv.vo_q);
895 *ppstapending = &padapter->xmitpriv.vo_pending;
896 (phwxmits+0)->accnt++;
897 break;
898 case 0:
899 case 3:
900 default:
901 ptxservq = &(psta->sta_xmitpriv.be_q);
902 *ppstapending = &padapter->xmitpriv.be_pending;
903 (phwxmits + 2)->accnt++;
904 break;
905 }
906 return ptxservq;
907 }
908
909 /*
910 * Will enqueue pxmitframe to the proper queue, and indicate it
911 * to xx_pending list.....
912 */
r8712_xmit_classifier(struct _adapter * padapter,struct xmit_frame * pxmitframe)913 sint r8712_xmit_classifier(struct _adapter *padapter,
914 struct xmit_frame *pxmitframe)
915 {
916 unsigned long irqL0;
917 struct __queue *pstapending;
918 struct sta_info *psta;
919 struct tx_servq *ptxservq;
920 struct pkt_attrib *pattrib = &pxmitframe->attrib;
921 struct sta_priv *pstapriv = &padapter->stapriv;
922 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
923 sint bmcst = IS_MCAST(pattrib->ra);
924
925 if (pattrib->psta)
926 psta = pattrib->psta;
927 else {
928 if (bmcst)
929 psta = r8712_get_bcmc_stainfo(padapter);
930 else {
931 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
932 psta = r8712_get_stainfo(pstapriv,
933 get_bssid(pmlmepriv));
934 else
935 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
936 }
937 }
938 if (psta == NULL)
939 return _FAIL;
940 ptxservq = get_sta_pending(padapter, &pstapending,
941 psta, pattrib->priority);
942 spin_lock_irqsave(&pstapending->lock, irqL0);
943 if (is_list_empty(&ptxservq->tx_pending))
944 list_insert_tail(&ptxservq->tx_pending,
945 get_list_head(pstapending));
946 list_insert_tail(&pxmitframe->list,
947 get_list_head(&ptxservq->sta_pending));
948 ptxservq->qcnt++;
949 spin_unlock_irqrestore(&pstapending->lock, irqL0);
950 return _SUCCESS;
951 }
952
alloc_hwxmits(struct _adapter * padapter)953 static void alloc_hwxmits(struct _adapter *padapter)
954 {
955 struct hw_xmit *hwxmits;
956 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
957
958 pxmitpriv->hwxmit_entry = HWXMIT_ENTRY;
959 pxmitpriv->hwxmits = (struct hw_xmit *)_malloc(sizeof(struct hw_xmit) *
960 pxmitpriv->hwxmit_entry);
961 if (pxmitpriv->hwxmits == NULL)
962 return;
963 hwxmits = pxmitpriv->hwxmits;
964 if (pxmitpriv->hwxmit_entry == 5) {
965 pxmitpriv->bmc_txqueue.head = 0;
966 hwxmits[0] .phwtxqueue = &pxmitpriv->bmc_txqueue;
967 hwxmits[0] .sta_queue = &pxmitpriv->bm_pending;
968 pxmitpriv->vo_txqueue.head = 0;
969 hwxmits[1] .phwtxqueue = &pxmitpriv->vo_txqueue;
970 hwxmits[1] .sta_queue = &pxmitpriv->vo_pending;
971 pxmitpriv->vi_txqueue.head = 0;
972 hwxmits[2] .phwtxqueue = &pxmitpriv->vi_txqueue;
973 hwxmits[2] .sta_queue = &pxmitpriv->vi_pending;
974 pxmitpriv->bk_txqueue.head = 0;
975 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
976 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
977 pxmitpriv->be_txqueue.head = 0;
978 hwxmits[4] .phwtxqueue = &pxmitpriv->be_txqueue;
979 hwxmits[4] .sta_queue = &pxmitpriv->be_pending;
980 } else if (pxmitpriv->hwxmit_entry == 4) {
981 pxmitpriv->vo_txqueue.head = 0;
982 hwxmits[0] .phwtxqueue = &pxmitpriv->vo_txqueue;
983 hwxmits[0] .sta_queue = &pxmitpriv->vo_pending;
984 pxmitpriv->vi_txqueue.head = 0;
985 hwxmits[1] .phwtxqueue = &pxmitpriv->vi_txqueue;
986 hwxmits[1] .sta_queue = &pxmitpriv->vi_pending;
987 pxmitpriv->be_txqueue.head = 0;
988 hwxmits[2] .phwtxqueue = &pxmitpriv->be_txqueue;
989 hwxmits[2] .sta_queue = &pxmitpriv->be_pending;
990 pxmitpriv->bk_txqueue.head = 0;
991 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
992 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
993 }
994 }
995
free_hwxmits(struct _adapter * padapter)996 static void free_hwxmits(struct _adapter *padapter)
997 {
998 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
999
1000 kfree(pxmitpriv->hwxmits);
1001 }
1002
init_hwxmits(struct hw_xmit * phwxmit,sint entry)1003 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry)
1004 {
1005 sint i;
1006
1007 for (i = 0; i < entry; i++, phwxmit++) {
1008 spin_lock_init(&phwxmit->xmit_lock);
1009 _init_listhead(&phwxmit->pending);
1010 phwxmit->txcmdcnt = 0;
1011 phwxmit->accnt = 0;
1012 }
1013 }
1014
xmitframe_xmitbuf_attach(struct xmit_frame * pxmitframe,struct xmit_buf * pxmitbuf)1015 void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
1016 struct xmit_buf *pxmitbuf)
1017 {
1018 /* pxmitbuf attach to pxmitframe */
1019 pxmitframe->pxmitbuf = pxmitbuf;
1020 /* urb and irp connection */
1021 pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
1022 /* buffer addr assoc */
1023 pxmitframe->buf_addr = pxmitbuf->pbuf;
1024 /* pxmitframe attach to pxmitbuf */
1025 pxmitbuf->priv_data = pxmitframe;
1026 }
1027
1028 /*
1029 * tx_action == 0 == no frames to transmit
1030 * tx_action > 0 ==> we have frames to transmit
1031 * tx_action < 0 ==> we have frames to transmit, but TXFF is not even enough
1032 * to transmit 1 frame.
1033 */
1034
r8712_pre_xmit(struct _adapter * padapter,struct xmit_frame * pxmitframe)1035 int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe)
1036 {
1037 unsigned long irqL;
1038 int ret;
1039 struct xmit_buf *pxmitbuf = NULL;
1040 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1041 struct pkt_attrib *pattrib = &pxmitframe->attrib;
1042
1043 r8712_do_queue_select(padapter, pattrib);
1044 spin_lock_irqsave(&pxmitpriv->lock, irqL);
1045 if (r8712_txframes_sta_ac_pending(padapter, pattrib) > 0) {
1046 ret = false;
1047 r8712_xmit_enqueue(padapter, pxmitframe);
1048 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1049 return ret;
1050 }
1051 pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv);
1052 if (pxmitbuf == NULL) { /*enqueue packet*/
1053 ret = false;
1054 r8712_xmit_enqueue(padapter, pxmitframe);
1055 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1056 } else { /*dump packet directly*/
1057 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1058 ret = true;
1059 xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
1060 r8712_xmit_direct(padapter, pxmitframe);
1061 }
1062 return ret;
1063 }
1064