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Merge tag 'for-linus-3.16-merge-window' of git://git.kernel.org/pub/scm/linux/kernel...
[deliverable/linux.git] / drivers / staging / rtl8712 / rtl871x_xmit.c
CommitLineData
2865d42c
LF		 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"
2865d42c
LF		 33#include "wifi.h"
34#include "osdep_intf.h"
35#include "usb_ops.h"
36
37
38static const u8 P802_1H_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0xf8};
39static const u8 RFC1042_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0x00};
40static void init_hwxmits(struct hw_xmit *phwxmit, sint entry);
41static void alloc_hwxmits(struct _adapter *padapter);
42static void free_hwxmits(struct _adapter *padapter);
43
44static void _init_txservq(struct tx_servq *ptxservq)
45{
46 _init_listhead(&ptxservq->tx_pending);
47 _init_queue(&ptxservq->sta_pending);
48 ptxservq->qcnt = 0;
49}
50
51void _r8712_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv)
52{
53 memset((unsigned char *)psta_xmitpriv, 0,
54 sizeof(struct sta_xmit_priv));
55 spin_lock_init(&psta_xmitpriv->lock);
56 _init_txservq(&psta_xmitpriv->be_q);
57 _init_txservq(&psta_xmitpriv->bk_q);
58 _init_txservq(&psta_xmitpriv->vi_q);
59 _init_txservq(&psta_xmitpriv->vo_q);
60 _init_listhead(&psta_xmitpriv->legacy_dz);
61 _init_listhead(&psta_xmitpriv->apsd);
62}
63
64sint _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv,
65 struct _adapter *padapter)
66{
67 sint i;
68 struct xmit_buf *pxmitbuf;
69 struct xmit_frame *pxframe;
70
71 memset((unsigned char *)pxmitpriv, 0, sizeof(struct xmit_priv));
72 spin_lock_init(&pxmitpriv->lock);
2865d42c 73 /*
be10ac2b 74 Please insert all the queue initialization using _init_queue below
2865d42c
LF		 75 */
76 pxmitpriv->adapter = padapter;
77 _init_queue(&pxmitpriv->be_pending);
78 _init_queue(&pxmitpriv->bk_pending);
79 _init_queue(&pxmitpriv->vi_pending);
80 _init_queue(&pxmitpriv->vo_pending);
81 _init_queue(&pxmitpriv->bm_pending);
82 _init_queue(&pxmitpriv->legacy_dz_queue);
83 _init_queue(&pxmitpriv->apsd_queue);
84 _init_queue(&pxmitpriv->free_xmit_queue);
85 /*
86 Please allocate memory with the sz = (struct xmit_frame) * NR_XMITFRAME,
87 and initialize free_xmit_frame below.
88 Please also apply free_txobj to link_up all the xmit_frames...
89 */
91d435fe
VO		 90 pxmitpriv->pallocated_frame_buf = kmalloc(NR_XMITFRAME * sizeof(struct xmit_frame) + 4,
91 GFP_ATOMIC);
2865d42c
LF		 92 if (pxmitpriv->pallocated_frame_buf == NULL) {
93 pxmitpriv->pxmit_frame_buf = NULL;
94 return _FAIL;
95 }
96 pxmitpriv->pxmit_frame_buf = pxmitpriv->pallocated_frame_buf + 4 -
97 ((addr_t) (pxmitpriv->pallocated_frame_buf) & 3);
98 pxframe = (struct xmit_frame *) pxmitpriv->pxmit_frame_buf;
99 for (i = 0; i < NR_XMITFRAME; i++) {
100 _init_listhead(&(pxframe->list));
101 pxframe->padapter = padapter;
102 pxframe->frame_tag = DATA_FRAMETAG;
103 pxframe->pkt = NULL;
104 pxframe->buf_addr = NULL;
105 pxframe->pxmitbuf = NULL;
106 list_insert_tail(&(pxframe->list),
107 &(pxmitpriv->free_xmit_queue.queue));
108 pxframe++;
109 }
110 pxmitpriv->free_xmitframe_cnt = NR_XMITFRAME;
111 /*
112 init xmit hw_txqueue
113 */
114 _r8712_init_hw_txqueue(&pxmitpriv->be_txqueue, BE_QUEUE_INX);
115 _r8712_init_hw_txqueue(&pxmitpriv->bk_txqueue, BK_QUEUE_INX);
116 _r8712_init_hw_txqueue(&pxmitpriv->vi_txqueue, VI_QUEUE_INX);
117 _r8712_init_hw_txqueue(&pxmitpriv->vo_txqueue, VO_QUEUE_INX);
118 _r8712_init_hw_txqueue(&pxmitpriv->bmc_txqueue, BMC_QUEUE_INX);
119 pxmitpriv->frag_len = MAX_FRAG_THRESHOLD;
120 pxmitpriv->txirp_cnt = 1;
2865d42c
LF		 121 /*per AC pending irp*/
122 pxmitpriv->beq_cnt = 0;
123 pxmitpriv->bkq_cnt = 0;
124 pxmitpriv->viq_cnt = 0;
125 pxmitpriv->voq_cnt = 0;
126 /*init xmit_buf*/
127 _init_queue(&pxmitpriv->free_xmitbuf_queue);
128 _init_queue(&pxmitpriv->pending_xmitbuf_queue);
91d435fe
VO		 129 pxmitpriv->pallocated_xmitbuf = kmalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4,
130 GFP_ATOMIC);
2865d42c
LF		 131 if (pxmitpriv->pallocated_xmitbuf == NULL)
132 return _FAIL;
133 pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 -
134 ((addr_t)(pxmitpriv->pallocated_xmitbuf) & 3);
135 pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
136 for (i = 0; i < NR_XMITBUFF; i++) {
137 _init_listhead(&pxmitbuf->list);
91d435fe
VO		 138 pxmitbuf->pallocated_buf = kmalloc(MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ,
139 GFP_ATOMIC);
2865d42c
LF		 140 if (pxmitbuf->pallocated_buf == NULL)
141 return _FAIL;
142 pxmitbuf->pbuf = pxmitbuf->pallocated_buf + XMITBUF_ALIGN_SZ -
143 ((addr_t) (pxmitbuf->pallocated_buf) &
144 (XMITBUF_ALIGN_SZ - 1));
145 r8712_xmit_resource_alloc(padapter, pxmitbuf);
146 list_insert_tail(&pxmitbuf->list,
147 &(pxmitpriv->free_xmitbuf_queue.queue));
148 pxmitbuf++;
149 }
150 pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF;
f95302ee 151 _init_workitem(&padapter->wkFilterRxFF0, r8712_SetFilter, padapter);
2865d42c
LF		 152 alloc_hwxmits(padapter);
153 init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
154 tasklet_init(&pxmitpriv->xmit_tasklet,
f95302ee
AB		 155 (void(*)(unsigned long))r8712_xmit_bh,
156 (unsigned long)padapter);
2865d42c
LF		 157 return _SUCCESS;
158}
159
160void _free_xmit_priv(struct xmit_priv *pxmitpriv)
161{
162 int i;
163 struct _adapter *padapter = pxmitpriv->adapter;
164 struct xmit_frame *pxmitframe = (struct xmit_frame *)
165 pxmitpriv->pxmit_frame_buf;
166 struct xmit_buf *pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
167
168 if (pxmitpriv->pxmit_frame_buf == NULL)
169 return;
170 for (i = 0; i < NR_XMITFRAME; i++) {
171 r8712_xmit_complete(padapter, pxmitframe);
172 pxmitframe++;
173 }
174 for (i = 0; i < NR_XMITBUFF; i++) {
175 r8712_xmit_resource_free(padapter, pxmitbuf);
176 kfree(pxmitbuf->pallocated_buf);
177 pxmitbuf++;
178 }
179 kfree(pxmitpriv->pallocated_frame_buf);
180 kfree(pxmitpriv->pallocated_xmitbuf);
181 free_hwxmits(padapter);
182}
183
184sint r8712_update_attrib(struct _adapter *padapter, _pkt *pkt,
185 struct pkt_attrib *pattrib)
186{
187 uint i;
188 struct pkt_file pktfile;
189 struct sta_info *psta = NULL;
190 struct ethhdr etherhdr;
191
192 struct tx_cmd txdesc;
193
194 sint bmcast;
195 struct sta_priv *pstapriv = &padapter->stapriv;
196 struct security_priv *psecuritypriv = &padapter->securitypriv;
197 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
198 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
199
200 _r8712_open_pktfile(pkt, &pktfile);
201
202 i = _r8712_pktfile_read(&pktfile, (unsigned char *)&etherhdr, ETH_HLEN);
203
204 pattrib->ether_type = ntohs(etherhdr.h_proto);
205
206{
207 u8 bool;
208 /*If driver xmit ARP packet, driver can set ps mode to initial
209 * setting. It stands for getting DHCP or fix IP.*/
210 if (pattrib->ether_type == 0x0806) {
211 if (padapter->pwrctrlpriv.pwr_mode !=
212 padapter->registrypriv.power_mgnt) {
213 _cancel_timer(&(pmlmepriv->dhcp_timer), &bool);
214 r8712_set_ps_mode(padapter, padapter->registrypriv.
215 power_mgnt, padapter->registrypriv.smart_ps);
216 }
217 }
218}
219 memcpy(pattrib->dst, &etherhdr.h_dest, ETH_ALEN);
220 memcpy(pattrib->src, &etherhdr.h_source, ETH_ALEN);
221 pattrib->pctrl = 0;
222 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
223 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
224 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
225 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
226 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
227 memcpy(pattrib->ra, get_bssid(pmlmepriv), ETH_ALEN);
228 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
229 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
230 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
231 memcpy(pattrib->ta, get_bssid(pmlmepriv), ETH_ALEN);
232 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
233 /*firstly, filter packet not belongs to mp*/
234 if (pattrib->ether_type != 0x8712)
235 return _FAIL;
236 /* for mp storing the txcmd per packet,
237 * according to the info of txcmd to update pattrib */
238 /*get MP_TXDESC_SIZE bytes txcmd per packet*/
239 i = _r8712_pktfile_read(&pktfile, (u8 *)&txdesc, TXDESC_SIZE);
240 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
241 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
242 pattrib->pctrl = 1;
243 }
244 /* r8712_xmitframe_coalesce() overwrite this!*/
245 pattrib->pktlen = pktfile.pkt_len;
246 if (ETH_P_IP == pattrib->ether_type) {
247 /* The following is for DHCP and ARP packet, we use cck1M to
248 * tx these packets and let LPS awake some time
249 * to prevent DHCP protocol fail */
250 u8 tmp[24];
251 _r8712_pktfile_read(&pktfile, &tmp[0], 24);
252 pattrib->dhcp_pkt = 0;
253 if (pktfile.pkt_len > 282) {/*MINIMUM_DHCP_PACKET_SIZE)*/
254 if (ETH_P_IP == pattrib->ether_type) {/* IP header*/
255 if (((tmp[21] == 68) && (tmp[23] == 67)) ||
256 ((tmp[21] == 67) && (tmp[23] == 68))) {
257 /* 68 : UDP BOOTP client
258 * 67 : UDP BOOTP server
259 * Use low rate to send DHCP packet.*/
260 pattrib->dhcp_pkt = 1;
261 }
262 }
263 }
264 }
265 bmcast = IS_MCAST(pattrib->ra);
266 /* get sta_info*/
267 if (bmcast) {
268 psta = r8712_get_bcmc_stainfo(padapter);
269 pattrib->mac_id = 4;
270 } else {
271 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
272 psta = r8712_get_stainfo(pstapriv,
273 get_bssid(pmlmepriv));
274 pattrib->mac_id = 5;
275 } else {
276 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
277 if (psta == NULL) /* drop the pkt */
278 return _FAIL;
279 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE))
280 pattrib->mac_id = 5;
281 else
282 pattrib->mac_id = psta->mac_id;
283 }
284 }
285
286 if (psta) {
287 pattrib->psta = psta;
288 } else {
289 /* if we cannot get psta => drrp the pkt */
290 return _FAIL;
291 }
292
293 pattrib->ack_policy = 0;
294 /* get ether_hdr_len */
295 pattrib->pkt_hdrlen = ETH_HLEN;
296
297 if (pqospriv->qos_option)
298 r8712_set_qos(&pktfile, pattrib);
299 else {
300 pattrib->hdrlen = WLAN_HDR_A3_LEN;
301 pattrib->subtype = WIFI_DATA_TYPE;
302 pattrib->priority = 0;
303 }
304 if (psta->ieee8021x_blocked == true) {
305 pattrib->encrypt = 0;
306 if ((pattrib->ether_type != 0x888e) &&
307 (check_fwstate(pmlmepriv, WIFI_MP_STATE) == false))
308 return _FAIL;
309 } else
310 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast);
311 switch (pattrib->encrypt) {
312 case _WEP40_:
313 case _WEP104_:
314 pattrib->iv_len = 4;
315 pattrib->icv_len = 4;
316 break;
317 case _TKIP_:
318 pattrib->iv_len = 8;
319 pattrib->icv_len = 4;
320 if (padapter->securitypriv.busetkipkey == _FAIL)
321 return _FAIL;
322 break;
323 case _AES_:
324 pattrib->iv_len = 8;
325 pattrib->icv_len = 8;
326 break;
327 default:
328 pattrib->iv_len = 0;
329 pattrib->icv_len = 0;
330 break;
331 }
332
333 if (pattrib->encrypt &&
334 ((padapter->securitypriv.sw_encrypt == true) ||
335 (psecuritypriv->hw_decrypted == false)))
336 pattrib->bswenc = true;
337 else
338 pattrib->bswenc = false;
339 /* if in MP_STATE, update pkt_attrib from mp_txcmd, and overwrite
340 * some settings above.*/
341 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
342 pattrib->priority = (txdesc.txdw1 >> QSEL_SHT) & 0x1f;
343 return _SUCCESS;
344}
345
346static sint xmitframe_addmic(struct _adapter *padapter,
347 struct xmit_frame *pxmitframe)
348{
349 u32 curfragnum, length, datalen;
350 u8 *pframe, *payload, mic[8];
351 struct mic_data micdata;
352 struct sta_info *stainfo;
353 struct qos_priv *pqospriv = &(padapter->mlmepriv.qospriv);
354 struct pkt_attrib *pattrib = &pxmitframe->attrib;
355 struct security_priv *psecuritypriv = &padapter->securitypriv;
356 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
357 u8 priority[4] = {0x0, 0x0, 0x0, 0x0};
358 sint bmcst = IS_MCAST(pattrib->ra);
359
360 if (pattrib->psta)
361 stainfo = pattrib->psta;
362 else
363 stainfo = r8712_get_stainfo(&padapter->stapriv,
364 &pattrib->ra[0]);
365 if (pattrib->encrypt == _TKIP_) {
366 /*encode mic code*/
367 if (stainfo != NULL) {
368 u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
369 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
370 0x0, 0x0};
371 datalen = pattrib->pktlen - pattrib->hdrlen;
859171ca 372 pframe = pxmitframe->buf_addr + TXDESC_OFFSET;
2865d42c
LF		 373 if (bmcst) {
374 if (!memcmp(psecuritypriv->XGrptxmickey
375 [psecuritypriv->XGrpKeyid].skey,
376 null_key, 16))
377 return _FAIL;
378 /*start to calculate the mic code*/
379 r8712_secmicsetkey(&micdata,
380 psecuritypriv->
381 XGrptxmickey[psecuritypriv->
382 XGrpKeyid].skey);
383 } else {
384 if (!memcmp(&stainfo->tkiptxmickey.skey[0],
385 null_key, 16))
386 return _FAIL;
387 /* start to calculate the mic code */
388 r8712_secmicsetkey(&micdata,
389 &stainfo->tkiptxmickey.skey[0]);
390 }
391 if (pframe[1] & 1) { /* ToDS==1 */
392 r8712_secmicappend(&micdata,
393 &pframe[16], 6); /*DA*/
394 if (pframe[1]&2) /* From Ds==1 */
395 r8712_secmicappend(&micdata,
396 &pframe[24], 6);
397 else
398 r8712_secmicappend(&micdata,
399 &pframe[10], 6);
400 } else { /* ToDS==0 */
401 r8712_secmicappend(&micdata,
402 &pframe[4], 6); /* DA */
403 if (pframe[1]&2) /* From Ds==1 */
404 r8712_secmicappend(&micdata,
405 &pframe[16], 6);
406 else
407 r8712_secmicappend(&micdata,
408 &pframe[10], 6);
409 }
410 if (pqospriv->qos_option == 1)
411 priority[0] = (u8)pxmitframe->
412 attrib.priority;
413 r8712_secmicappend(&micdata, &priority[0], 4);
414 payload = pframe;
415 for (curfragnum = 0; curfragnum < pattrib->nr_frags;
416 curfragnum++) {
417 payload = (u8 *)RND4((addr_t)(payload));
418 payload = payload+pattrib->
419 hdrlen+pattrib->iv_len;
420 if ((curfragnum + 1) == pattrib->nr_frags) {
421 length = pattrib->last_txcmdsz -
422 pattrib->hdrlen -
423 pattrib->iv_len -
424 ((psecuritypriv->sw_encrypt)
425 ? pattrib->icv_len : 0);
426 r8712_secmicappend(&micdata, payload,
427 length);
428 payload = payload+length;
429 } else{
430 length = pxmitpriv->frag_len -
431 pattrib->hdrlen-pattrib->iv_len -
432 ((psecuritypriv->sw_encrypt) ?
433 pattrib->icv_len : 0);
434 r8712_secmicappend(&micdata, payload,
435 length);
436 payload = payload + length +
437 pattrib->icv_len;
438 }
439 }
440 r8712_secgetmic(&micdata, &(mic[0]));
441 /* add mic code and add the mic code length in
442 * last_txcmdsz */
443 memcpy(payload, &(mic[0]), 8);
444 pattrib->last_txcmdsz += 8;
445 payload = payload-pattrib->last_txcmdsz + 8;
446 }
447 }
448 return _SUCCESS;
449}
450
451static sint xmitframe_swencrypt(struct _adapter *padapter,
452 struct xmit_frame *pxmitframe)
453{
454 struct pkt_attrib *pattrib = &pxmitframe->attrib;
455
456 if (pattrib->bswenc) {
457 switch (pattrib->encrypt) {
458 case _WEP40_:
459 case _WEP104_:
460 r8712_wep_encrypt(padapter, (u8 *)pxmitframe);
461 break;
462 case _TKIP_:
463 r8712_tkip_encrypt(padapter, (u8 *)pxmitframe);
464 break;
465 case _AES_:
466 r8712_aes_encrypt(padapter, (u8 *)pxmitframe);
467 break;
468 default:
469 break;
470 }
471 }
472 return _SUCCESS;
473}
474
475static sint make_wlanhdr(struct _adapter *padapter , u8 *hdr,
476 struct pkt_attrib *pattrib)
477{
478 u16 *qc;
479
480 struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr;
481 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
482 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
483 u16 *fctrl = &pwlanhdr->frame_ctl;
484 memset(hdr, 0, WLANHDR_OFFSET);
485 SetFrameSubType(fctrl, pattrib->subtype);
486 if (pattrib->subtype & WIFI_DATA_TYPE) {
487 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true)) {
488 /* to_ds = 1, fr_ds = 0; */
489 SetToDs(fctrl);
490 memcpy(pwlanhdr->addr1, get_bssid(pmlmepriv),
491 ETH_ALEN);
492 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
493 memcpy(pwlanhdr->addr3, pattrib->dst, ETH_ALEN);
494 } else if ((check_fwstate(pmlmepriv, WIFI_AP_STATE) == true)) {
495 /* to_ds = 0, fr_ds = 1; */
496 SetFrDs(fctrl);
497 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
498 memcpy(pwlanhdr->addr2, get_bssid(pmlmepriv),
499 ETH_ALEN);
500 memcpy(pwlanhdr->addr3, pattrib->src, ETH_ALEN);
501 } else if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true)
502 || (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)
503 == true)) {
504 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
505 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
506 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
507 ETH_ALEN);
508 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
509 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
510 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
511 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
512 ETH_ALEN);
513 } else
514 return _FAIL;
515
516 if (pattrib->encrypt)
517 SetPrivacy(fctrl);
518 if (pqospriv->qos_option) {
519 qc = (unsigned short *)(hdr + pattrib->hdrlen - 2);
520 if (pattrib->priority)
521 SetPriority(qc, pattrib->priority);
522 SetAckpolicy(qc, pattrib->ack_policy);
523 }
524 /* TODO: fill HT Control Field */
525 /* Update Seq Num will be handled by f/w */
526 {
527 struct sta_info *psta;
528
529 sint bmcst = IS_MCAST(pattrib->ra);
530 if (pattrib->psta)
531 psta = pattrib->psta;
532 else {
533 if (bmcst)
534 psta = r8712_get_bcmc_stainfo(padapter);
535 else
536 psta =
537 r8712_get_stainfo(&padapter->stapriv,
538 pattrib->ra);
539 }
540 if (psta) {
541 psta->sta_xmitpriv.txseq_tid
542 [pattrib->priority]++;
543 psta->sta_xmitpriv.txseq_tid[pattrib->priority]
544 &= 0xFFF;
545 pattrib->seqnum = psta->sta_xmitpriv.
546 txseq_tid[pattrib->priority];
547 SetSeqNum(hdr, pattrib->seqnum);
548 }
549 }
550 }
551 return _SUCCESS;
552}
553
554static sint r8712_put_snap(u8 *data, u16 h_proto)
555{
556 struct ieee80211_snap_hdr *snap;
557 const u8 *oui;
558
559 snap = (struct ieee80211_snap_hdr *)data;
560 snap->dsap = 0xaa;
561 snap->ssap = 0xaa;
562 snap->ctrl = 0x03;
563 if (h_proto == 0x8137 || h_proto == 0x80f3)
564 oui = P802_1H_OUI;
565 else
566 oui = RFC1042_OUI;
567 snap->oui[0] = oui[0];
568 snap->oui[1] = oui[1];
569 snap->oui[2] = oui[2];
570 *(u16 *)(data + SNAP_SIZE) = htons(h_proto);
571 return SNAP_SIZE + sizeof(u16);
572}
573
574/*
575 * This sub-routine will perform all the following:
576 * 1. remove 802.3 header.
577 * 2. create wlan_header, based on the info in pxmitframe
578 * 3. append sta's iv/ext-iv
579 * 4. append LLC
580 * 5. move frag chunk from pframe to pxmitframe->mem
581 * 6. apply sw-encrypt, if necessary.
582 */
583sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt,
584 struct xmit_frame *pxmitframe)
585{
586 struct pkt_file pktfile;
587
588 sint frg_len, mpdu_len, llc_sz;
589 u32 mem_sz;
590 u8 frg_inx;
591 addr_t addr;
592 u8 *pframe, *mem_start, *ptxdesc;
593 struct sta_info *psta;
594 struct security_priv *psecuritypriv = &padapter->securitypriv;
595 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
596 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
597 struct pkt_attrib *pattrib = &pxmitframe->attrib;
598 u8 *pbuf_start;
599 sint bmcst = IS_MCAST(pattrib->ra);
600
601 if (pattrib->psta == NULL)
602 return _FAIL;
603 psta = pattrib->psta;
604 if (pxmitframe->buf_addr == NULL)
605 return _FAIL;
606 pbuf_start = pxmitframe->buf_addr;
607 ptxdesc = pbuf_start;
608 mem_start = pbuf_start + TXDESC_OFFSET;
609 if (make_wlanhdr(padapter, mem_start, pattrib) == _FAIL)
610 return _FAIL;
611 _r8712_open_pktfile(pkt, &pktfile);
f95302ee 612 _r8712_pktfile_read(&pktfile, NULL, (uint) pattrib->pkt_hdrlen);
2865d42c
LF		 613 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
614 /* truncate TXDESC_SIZE bytes txcmd if at mp mode for 871x */
615 if (pattrib->ether_type == 0x8712) {
616 /* take care - update_txdesc overwrite this */
617 _r8712_pktfile_read(&pktfile, ptxdesc, TXDESC_SIZE);
618 }
619 }
620 pattrib->pktlen = pktfile.pkt_len;
621 frg_inx = 0;
622 frg_len = pxmitpriv->frag_len - 4;
623 while (1) {
624 llc_sz = 0;
625 mpdu_len = frg_len;
626 pframe = mem_start;
627 SetMFrag(mem_start);
628 pframe += pattrib->hdrlen;
629 mpdu_len -= pattrib->hdrlen;
630 /* adding icv, if necessary...*/
631 if (pattrib->iv_len) {
632 if (psta != NULL) {
633 switch (pattrib->encrypt) {
634 case _WEP40_:
635 case _WEP104_:
636 WEP_IV(pattrib->iv, psta->txpn,
637 (u8)psecuritypriv->
638 PrivacyKeyIndex);
639 break;
640 case _TKIP_:
641 if (bmcst)
642 TKIP_IV(pattrib->iv,
643 psta->txpn,
644 (u8)psecuritypriv->
645 XGrpKeyid);
646 else
647 TKIP_IV(pattrib->iv, psta->txpn,
648 0);
649 break;
650 case _AES_:
651 if (bmcst)
652 AES_IV(pattrib->iv, psta->txpn,
653 (u8)psecuritypriv->
654 XGrpKeyid);
655 else
656 AES_IV(pattrib->iv, psta->txpn,
657 0);
658 break;
659 }
660 }
661 memcpy(pframe, pattrib->iv, pattrib->iv_len);
662 pframe += pattrib->iv_len;
663 mpdu_len -= pattrib->iv_len;
664 }
665 if (frg_inx == 0) {
666 llc_sz = r8712_put_snap(pframe, pattrib->ether_type);
667 pframe += llc_sz;
668 mpdu_len -= llc_sz;
669 }
670 if ((pattrib->icv_len > 0) && (pattrib->bswenc))
671 mpdu_len -= pattrib->icv_len;
672 if (bmcst)
673 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
674 pattrib->pktlen);
675 else
676 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
677 mpdu_len);
678 pframe += mem_sz;
679 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) {
680 memcpy(pframe, pattrib->icv, pattrib->icv_len);
681 pframe += pattrib->icv_len;
682 }
683 frg_inx++;
684 if (bmcst || (r8712_endofpktfile(&pktfile) == true)) {
685 pattrib->nr_frags = frg_inx;
686 pattrib->last_txcmdsz = pattrib->hdrlen +
687 pattrib->iv_len +
688 ((pattrib->nr_frags == 1) ?
689 llc_sz : 0) +
690 ((pattrib->bswenc) ?
691 pattrib->icv_len : 0) + mem_sz;
692 ClearMFrag(mem_start);
693 break;
694 }
695 addr = (addr_t)(pframe);
696 mem_start = (unsigned char *)RND4(addr) + TXDESC_OFFSET;
697 memcpy(mem_start, pbuf_start + TXDESC_OFFSET, pattrib->hdrlen);
698 }
699
700 if (xmitframe_addmic(padapter, pxmitframe) == _FAIL)
701 return _FAIL;
702 xmitframe_swencrypt(padapter, pxmitframe);
703 return _SUCCESS;
704}
705
706void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len)
707{
708 uint protection;
709 u8 *perp;
710 sint erp_len;
711 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
712 struct registry_priv *pregistrypriv = &padapter->registrypriv;
713
714 switch (pxmitpriv->vcs_setting) {
715 case DISABLE_VCS:
716 pxmitpriv->vcs = NONE_VCS;
717 break;
718 case ENABLE_VCS:
719 break;
720 case AUTO_VCS:
721 default:
722 perp = r8712_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len);
723 if (perp == NULL)
724 pxmitpriv->vcs = NONE_VCS;
725 else {
726 protection = (*(perp + 2)) & BIT(1);
727 if (protection) {
728 if (pregistrypriv->vcs_type == RTS_CTS)
729 pxmitpriv->vcs = RTS_CTS;
730 else
731 pxmitpriv->vcs = CTS_TO_SELF;
732 } else
733 pxmitpriv->vcs = NONE_VCS;
734 }
735 break;
736 }
737}
738
739struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv)
740{
741 unsigned long irqL;
742 struct xmit_buf *pxmitbuf = NULL;
743 struct list_head *plist, *phead;
744 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
745
746 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
747 if (_queue_empty(pfree_xmitbuf_queue) == true)
748 pxmitbuf = NULL;
749 else {
750 phead = get_list_head(pfree_xmitbuf_queue);
751 plist = get_next(phead);
752 pxmitbuf = LIST_CONTAINOR(plist, struct xmit_buf, list);
753 list_delete(&(pxmitbuf->list));
754 }
755 if (pxmitbuf != NULL)
756 pxmitpriv->free_xmitbuf_cnt--;
757 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
758 return pxmitbuf;
759}
760
761int r8712_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
762{
763 unsigned long irqL;
764 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
765
766 if (pxmitbuf == NULL)
767 return _FAIL;
768 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
769 list_delete(&pxmitbuf->list);
770 list_insert_tail(&(pxmitbuf->list), get_list_head(pfree_xmitbuf_queue));
771 pxmitpriv->free_xmitbuf_cnt++;
772 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
773 return _SUCCESS;
774}
775
776/*
777Calling context:
7781. OS_TXENTRY
7792. RXENTRY (rx_thread or RX_ISR/RX_CallBack)
780
781If we turn on USE_RXTHREAD, then, no need for critical section.
782Otherwise, we must use _enter/_exit critical to protect free_xmit_queue...
783
784Must be very very cautious...
785
786*/
787
788struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv)
789{
790 /*
791 Please remember to use all the osdep_service api,
792 and lock/unlock or _enter/_exit critical to protect
793 pfree_xmit_queue
794 */
795 unsigned long irqL;
796 struct xmit_frame *pxframe = NULL;
797 struct list_head *plist, *phead;
798 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
799
800 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
801 if (_queue_empty(pfree_xmit_queue) == true)
802 pxframe = NULL;
803 else {
804 phead = get_list_head(pfree_xmit_queue);
805 plist = get_next(phead);
806 pxframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
807 list_delete(&(pxframe->list));
808 }
809 if (pxframe != NULL) {
810 pxmitpriv->free_xmitframe_cnt--;
811 pxframe->buf_addr = NULL;
812 pxframe->pxmitbuf = NULL;
813 pxframe->attrib.psta = NULL;
814 pxframe->pkt = NULL;
815 }
816 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
817 return pxframe;
818}
819
820void r8712_free_xmitframe(struct xmit_priv *pxmitpriv,
821 struct xmit_frame *pxmitframe)
822{
823 unsigned long irqL;
824 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
825 struct _adapter *padapter = pxmitpriv->adapter;
f95302ee 826 struct sk_buff *pndis_pkt = NULL;
2865d42c
LF		 827
828 if (pxmitframe == NULL)
829 return;
2865d42c
LF		 830 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
831 list_delete(&pxmitframe->list);
f95302ee
AB		 832 if (pxmitframe->pkt) {
833 pndis_pkt = pxmitframe->pkt;
834 pxmitframe->pkt = NULL;
835 }
2865d42c
LF		 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
843void 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
852void 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
870static 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 */
912sint 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
952static 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;
91d435fe
VO		 958 pxmitpriv->hwxmits = kmalloc(sizeof(struct hw_xmit) * pxmitpriv->hwxmit_entry,
959 GFP_ATOMIC);
2865d42c
LF		 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
995static void free_hwxmits(struct _adapter *padapter)
996{
997 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
998
40083865 999 kfree(pxmitpriv->hwxmits);
2865d42c
LF		 1000}
1001
1002static 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
07a6b037
AB		 1014void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
1015 struct xmit_buf *pxmitbuf)
1016{
1017 /* pxmitbuf attach to pxmitframe */
1018 pxmitframe->pxmitbuf = pxmitbuf;
1019 /* urb and irp connection */
1020 pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
1021 /* buffer addr assoc */
1022 pxmitframe->buf_addr = pxmitbuf->pbuf;
1023 /* pxmitframe attach to pxmitbuf */
1024 pxmitbuf->priv_data = pxmitframe;
1025}
1026
2865d42c
LF		 1027/*
1028 * tx_action == 0 == no frames to transmit
1029 * tx_action > 0 ==> we have frames to transmit
1030 * tx_action < 0 ==> we have frames to transmit, but TXFF is not even enough
1031 * to transmit 1 frame.
1032 */
1033
1034int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe)
1035{
1036 unsigned long irqL;
1037 int ret;
1038 struct xmit_buf *pxmitbuf = NULL;
1039 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1040 struct pkt_attrib *pattrib = &pxmitframe->attrib;
1041
1042 r8712_do_queue_select(padapter, pattrib);
1043 spin_lock_irqsave(&pxmitpriv->lock, irqL);
1044 if (r8712_txframes_sta_ac_pending(padapter, pattrib) > 0) {
1045 ret = false;
1046 r8712_xmit_enqueue(padapter, pxmitframe);
1047 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1048 return ret;
1049 }
1050 pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv);
1051 if (pxmitbuf == NULL) { /*enqueue packet*/
1052 ret = false;
1053 r8712_xmit_enqueue(padapter, pxmitframe);
1054 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1055 } else { /*dump packet directly*/
1056 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1057 ret = true;
07a6b037 1058 xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
2865d42c
LF		 1059 r8712_xmit_direct(padapter, pxmitframe);
1060 }
1061 return ret;
1062}
Linux kernel - Deliverables
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