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 "wifi.h"
34 #include "osdep_intf.h"
35 #include "usb_ops.h"
36
37
38 static const u8 P802_1H_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0xf8};
39 static const u8 RFC1042_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0x00};
40 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry);
41 static void alloc_hwxmits(struct _adapter *padapter);
42 static void free_hwxmits(struct _adapter *padapter);
43
_init_txservq(struct tx_servq * ptxservq)44 static void _init_txservq(struct tx_servq *ptxservq)
45 {
46 INIT_LIST_HEAD(&ptxservq->tx_pending);
47 _init_queue(&ptxservq->sta_pending);
48 ptxservq->qcnt = 0;
49 }
50
_r8712_init_sta_xmit_priv(struct sta_xmit_priv * psta_xmitpriv)51 void _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_LIST_HEAD(&psta_xmitpriv->legacy_dz);
61 INIT_LIST_HEAD(&psta_xmitpriv->apsd);
62 }
63
_r8712_init_xmit_priv(struct xmit_priv * pxmitpriv,struct _adapter * padapter)64 sint _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);
73 /*
74 Please insert all the queue initialization using _init_queue below
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 */
90 pxmitpriv->pallocated_frame_buf = kmalloc(NR_XMITFRAME * sizeof(struct xmit_frame) + 4,
91 GFP_ATOMIC);
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_LIST_HEAD(&(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_add_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;
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);
129 pxmitpriv->pallocated_xmitbuf = kmalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4,
130 GFP_ATOMIC);
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_LIST_HEAD(&pxmitbuf->list);
138 pxmitbuf->pallocated_buf = kmalloc(MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ,
139 GFP_ATOMIC);
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_add_tail(&pxmitbuf->list,
147 &(pxmitpriv->free_xmitbuf_queue.queue));
148 pxmitbuf++;
149 }
150 pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF;
151 INIT_WORK(&padapter->wkFilterRxFF0, r8712_SetFilter);
152 alloc_hwxmits(padapter);
153 init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
154 tasklet_init(&pxmitpriv->xmit_tasklet,
155 (void(*)(unsigned long))r8712_xmit_bh,
156 (unsigned long)padapter);
157 return _SUCCESS;
158 }
159
_free_xmit_priv(struct xmit_priv * pxmitpriv)160 void _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
r8712_update_attrib(struct _adapter * padapter,_pkt * pkt,struct pkt_attrib * pattrib)184 sint 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 *)ðerhdr, 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, ðerhdr.h_dest, ETH_ALEN);
220 memcpy(pattrib->src, ðerhdr.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
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 =
344 (le32_to_cpu(txdesc.txdw1) >> QSEL_SHT) & 0x1f;
345 return _SUCCESS;
346 }
347
xmitframe_addmic(struct _adapter * padapter,struct xmit_frame * pxmitframe)348 static sint xmitframe_addmic(struct _adapter *padapter,
349 struct xmit_frame *pxmitframe)
350 {
351 u32 curfragnum, length, datalen;
352 u8 *pframe, *payload, mic[8];
353 struct mic_data micdata;
354 struct sta_info *stainfo;
355 struct qos_priv *pqospriv = &(padapter->mlmepriv.qospriv);
356 struct pkt_attrib *pattrib = &pxmitframe->attrib;
357 struct security_priv *psecuritypriv = &padapter->securitypriv;
358 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
359 u8 priority[4] = {0x0, 0x0, 0x0, 0x0};
360 sint bmcst = IS_MCAST(pattrib->ra);
361
362 if (pattrib->psta)
363 stainfo = pattrib->psta;
364 else
365 stainfo = r8712_get_stainfo(&padapter->stapriv,
366 &pattrib->ra[0]);
367 if (pattrib->encrypt == _TKIP_) {
368 /*encode mic code*/
369 if (stainfo != NULL) {
370 u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
371 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
372 0x0, 0x0};
373 datalen = pattrib->pktlen - pattrib->hdrlen;
374 pframe = pxmitframe->buf_addr + TXDESC_OFFSET;
375 if (bmcst) {
376 if (!memcmp(psecuritypriv->XGrptxmickey
377 [psecuritypriv->XGrpKeyid].skey,
378 null_key, 16))
379 return _FAIL;
380 /*start to calculate the mic code*/
381 r8712_secmicsetkey(&micdata,
382 psecuritypriv->
383 XGrptxmickey[psecuritypriv->
384 XGrpKeyid].skey);
385 } else {
386 if (!memcmp(&stainfo->tkiptxmickey.skey[0],
387 null_key, 16))
388 return _FAIL;
389 /* start to calculate the mic code */
390 r8712_secmicsetkey(&micdata,
391 &stainfo->tkiptxmickey.skey[0]);
392 }
393 if (pframe[1] & 1) { /* ToDS==1 */
394 r8712_secmicappend(&micdata,
395 &pframe[16], 6); /*DA*/
396 if (pframe[1]&2) /* From Ds==1 */
397 r8712_secmicappend(&micdata,
398 &pframe[24], 6);
399 else
400 r8712_secmicappend(&micdata,
401 &pframe[10], 6);
402 } else { /* ToDS==0 */
403 r8712_secmicappend(&micdata,
404 &pframe[4], 6); /* DA */
405 if (pframe[1]&2) /* From Ds==1 */
406 r8712_secmicappend(&micdata,
407 &pframe[16], 6);
408 else
409 r8712_secmicappend(&micdata,
410 &pframe[10], 6);
411 }
412 if (pqospriv->qos_option == 1)
413 priority[0] = (u8)pxmitframe->
414 attrib.priority;
415 r8712_secmicappend(&micdata, &priority[0], 4);
416 payload = pframe;
417 for (curfragnum = 0; curfragnum < pattrib->nr_frags;
418 curfragnum++) {
419 payload = (u8 *)RND4((addr_t)(payload));
420 payload = payload+pattrib->
421 hdrlen+pattrib->iv_len;
422 if ((curfragnum + 1) == pattrib->nr_frags) {
423 length = pattrib->last_txcmdsz -
424 pattrib->hdrlen -
425 pattrib->iv_len -
426 ((psecuritypriv->sw_encrypt)
427 ? pattrib->icv_len : 0);
428 r8712_secmicappend(&micdata, payload,
429 length);
430 payload = payload+length;
431 } else{
432 length = pxmitpriv->frag_len -
433 pattrib->hdrlen-pattrib->iv_len -
434 ((psecuritypriv->sw_encrypt) ?
435 pattrib->icv_len : 0);
436 r8712_secmicappend(&micdata, payload,
437 length);
438 payload = payload + length +
439 pattrib->icv_len;
440 }
441 }
442 r8712_secgetmic(&micdata, &(mic[0]));
443 /* add mic code and add the mic code length in
444 * last_txcmdsz */
445 memcpy(payload, &(mic[0]), 8);
446 pattrib->last_txcmdsz += 8;
447 payload = payload-pattrib->last_txcmdsz + 8;
448 }
449 }
450 return _SUCCESS;
451 }
452
xmitframe_swencrypt(struct _adapter * padapter,struct xmit_frame * pxmitframe)453 static sint xmitframe_swencrypt(struct _adapter *padapter,
454 struct xmit_frame *pxmitframe)
455 {
456 struct pkt_attrib *pattrib = &pxmitframe->attrib;
457
458 if (pattrib->bswenc) {
459 switch (pattrib->encrypt) {
460 case _WEP40_:
461 case _WEP104_:
462 r8712_wep_encrypt(padapter, (u8 *)pxmitframe);
463 break;
464 case _TKIP_:
465 r8712_tkip_encrypt(padapter, (u8 *)pxmitframe);
466 break;
467 case _AES_:
468 r8712_aes_encrypt(padapter, (u8 *)pxmitframe);
469 break;
470 default:
471 break;
472 }
473 }
474 return _SUCCESS;
475 }
476
make_wlanhdr(struct _adapter * padapter,u8 * hdr,struct pkt_attrib * pattrib)477 static sint make_wlanhdr(struct _adapter *padapter , u8 *hdr,
478 struct pkt_attrib *pattrib)
479 {
480 u16 *qc;
481
482 struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr;
483 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
484 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
485 __le16 *fctrl = &pwlanhdr->frame_ctl;
486
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 sint bmcst = IS_MCAST(pattrib->ra);
532
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
r8712_put_snap(u8 * data,u16 h_proto)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 *(__be16 *)(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 */
r8712_xmitframe_coalesce(struct _adapter * padapter,_pkt * pkt,struct xmit_frame * pxmitframe)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, (uint) 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
r8712_update_protection(struct _adapter * padapter,u8 * ie,uint ie_len)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
r8712_alloc_xmitbuf(struct xmit_priv * pxmitpriv)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 (list_empty(&pfree_xmitbuf_queue->queue))
751 pxmitbuf = NULL;
752 else {
753 phead = &pfree_xmitbuf_queue->queue;
754 plist = phead->next;
755 pxmitbuf = LIST_CONTAINOR(plist, struct xmit_buf, list);
756 list_del_init(&(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
r8712_free_xmitbuf(struct xmit_priv * pxmitpriv,struct xmit_buf * pxmitbuf)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_del_init(&pxmitbuf->list);
773 list_add_tail(&(pxmitbuf->list), &pfree_xmitbuf_queue->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
r8712_alloc_xmitframe(struct xmit_priv * pxmitpriv)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 (list_empty(&pfree_xmit_queue->queue))
805 pxframe = NULL;
806 else {
807 phead = &pfree_xmit_queue->queue;
808 plist = phead->next;
809 pxframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
810 list_del_init(&(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
r8712_free_xmitframe(struct xmit_priv * pxmitpriv,struct xmit_frame * pxmitframe)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 struct sk_buff *pndis_pkt = NULL;
830
831 if (pxmitframe == NULL)
832 return;
833 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
834 list_del_init(&pxmitframe->list);
835 if (pxmitframe->pkt) {
836 pndis_pkt = pxmitframe->pkt;
837 pxmitframe->pkt = NULL;
838 }
839 list_add_tail(&pxmitframe->list, &pfree_xmit_queue->queue);
840 pxmitpriv->free_xmitframe_cnt++;
841 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
842 if (netif_queue_stopped(padapter->pnetdev))
843 netif_wake_queue(padapter->pnetdev);
844 }
845
r8712_free_xmitframe_ex(struct xmit_priv * pxmitpriv,struct xmit_frame * pxmitframe)846 void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv,
847 struct xmit_frame *pxmitframe)
848 {
849 if (pxmitframe == NULL)
850 return;
851 if (pxmitframe->frame_tag == DATA_FRAMETAG)
852 r8712_free_xmitframe(pxmitpriv, pxmitframe);
853 }
854
r8712_free_xmitframe_queue(struct xmit_priv * pxmitpriv,struct __queue * pframequeue)855 void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv,
856 struct __queue *pframequeue)
857 {
858 unsigned long irqL;
859 struct list_head *plist, *phead;
860 struct xmit_frame *pxmitframe;
861
862 spin_lock_irqsave(&(pframequeue->lock), irqL);
863 phead = &pframequeue->queue;
864 plist = phead->next;
865 while (end_of_queue_search(phead, plist) == false) {
866 pxmitframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
867 plist = plist->next;
868 r8712_free_xmitframe(pxmitpriv, pxmitframe);
869 }
870 spin_unlock_irqrestore(&(pframequeue->lock), irqL);
871 }
872
get_sta_pending(struct _adapter * padapter,struct __queue ** ppstapending,struct sta_info * psta,sint up)873 static inline struct tx_servq *get_sta_pending(struct _adapter *padapter,
874 struct __queue **ppstapending,
875 struct sta_info *psta, sint up)
876 {
877
878 struct tx_servq *ptxservq;
879 struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
880
881 switch (up) {
882 case 1:
883 case 2:
884 ptxservq = &(psta->sta_xmitpriv.bk_q);
885 *ppstapending = &padapter->xmitpriv.bk_pending;
886 (phwxmits+3)->accnt++;
887 break;
888 case 4:
889 case 5:
890 ptxservq = &(psta->sta_xmitpriv.vi_q);
891 *ppstapending = &padapter->xmitpriv.vi_pending;
892 (phwxmits+1)->accnt++;
893 break;
894 case 6:
895 case 7:
896 ptxservq = &(psta->sta_xmitpriv.vo_q);
897 *ppstapending = &padapter->xmitpriv.vo_pending;
898 (phwxmits+0)->accnt++;
899 break;
900 case 0:
901 case 3:
902 default:
903 ptxservq = &(psta->sta_xmitpriv.be_q);
904 *ppstapending = &padapter->xmitpriv.be_pending;
905 (phwxmits + 2)->accnt++;
906 break;
907 }
908 return ptxservq;
909 }
910
911 /*
912 * Will enqueue pxmitframe to the proper queue, and indicate it
913 * to xx_pending list.....
914 */
r8712_xmit_classifier(struct _adapter * padapter,struct xmit_frame * pxmitframe)915 sint r8712_xmit_classifier(struct _adapter *padapter,
916 struct xmit_frame *pxmitframe)
917 {
918 unsigned long irqL0;
919 struct __queue *pstapending;
920 struct sta_info *psta;
921 struct tx_servq *ptxservq;
922 struct pkt_attrib *pattrib = &pxmitframe->attrib;
923 struct sta_priv *pstapriv = &padapter->stapriv;
924 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
925 sint bmcst = IS_MCAST(pattrib->ra);
926
927 if (pattrib->psta)
928 psta = pattrib->psta;
929 else {
930 if (bmcst)
931 psta = r8712_get_bcmc_stainfo(padapter);
932 else {
933 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
934 psta = r8712_get_stainfo(pstapriv,
935 get_bssid(pmlmepriv));
936 else
937 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
938 }
939 }
940 if (psta == NULL)
941 return _FAIL;
942 ptxservq = get_sta_pending(padapter, &pstapending,
943 psta, pattrib->priority);
944 spin_lock_irqsave(&pstapending->lock, irqL0);
945 if (list_empty(&ptxservq->tx_pending))
946 list_add_tail(&ptxservq->tx_pending, &pstapending->queue);
947 list_add_tail(&pxmitframe->list, &ptxservq->sta_pending.queue);
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 = kmalloc_array(pxmitpriv->hwxmit_entry,
960 sizeof(struct hw_xmit), GFP_ATOMIC);
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_LIST_HEAD(&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