1 /******************************************************************************
4 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
5 * Linux device driver for RTL8192SU
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.
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
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
20 * Modifications for inclusion into the Linux staging tree are
21 * Copyright(c) 2010 Larry Finger. All rights reserved.
23 * Contact information:
24 * WLAN FAE <wlanfae@realtek.com>
25 * Larry Finger <Larry.Finger@lwfinger.net>
27 ******************************************************************************/
29 #define _RTL871X_XMIT_C_
31 #include "osdep_service.h"
32 #include "drv_types.h"
33 #include "rtl871x_byteorder.h"
35 #include "osdep_intf.h"
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);
45 static void _init_txservq(struct tx_servq *ptxservq)
47 _init_listhead(&ptxservq->tx_pending);
48 _init_queue(&ptxservq->sta_pending);
52 void _r8712_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv)
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);
65 sint _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv,
66 struct _adapter *padapter)
69 struct xmit_buf *pxmitbuf;
70 struct xmit_frame *pxframe;
72 memset((unsigned char *)pxmitpriv, 0, sizeof(struct xmit_priv));
73 spin_lock_init(&pxmitpriv->lock);
74 sema_init(&pxmitpriv->xmit_sema, 0);
75 sema_init(&pxmitpriv->terminate_xmitthread_sema, 0);
77 Please insert all the queue initializaiton using _init_queue below
79 pxmitpriv->adapter = padapter;
80 _init_queue(&pxmitpriv->be_pending);
81 _init_queue(&pxmitpriv->bk_pending);
82 _init_queue(&pxmitpriv->vi_pending);
83 _init_queue(&pxmitpriv->vo_pending);
84 _init_queue(&pxmitpriv->bm_pending);
85 _init_queue(&pxmitpriv->legacy_dz_queue);
86 _init_queue(&pxmitpriv->apsd_queue);
87 _init_queue(&pxmitpriv->free_xmit_queue);
89 Please allocate memory with the sz = (struct xmit_frame) * NR_XMITFRAME,
90 and initialize free_xmit_frame below.
91 Please also apply free_txobj to link_up all the xmit_frames...
93 pxmitpriv->pallocated_frame_buf = _malloc(NR_XMITFRAME *
94 sizeof(struct xmit_frame) + 4);
95 if (pxmitpriv->pallocated_frame_buf == NULL) {
96 pxmitpriv->pxmit_frame_buf = NULL;
99 pxmitpriv->pxmit_frame_buf = pxmitpriv->pallocated_frame_buf + 4 -
100 ((addr_t) (pxmitpriv->pallocated_frame_buf) & 3);
101 pxframe = (struct xmit_frame *) pxmitpriv->pxmit_frame_buf;
102 for (i = 0; i < NR_XMITFRAME; i++) {
103 _init_listhead(&(pxframe->list));
104 pxframe->padapter = padapter;
105 pxframe->frame_tag = DATA_FRAMETAG;
107 pxframe->buf_addr = NULL;
108 pxframe->pxmitbuf = NULL;
109 list_insert_tail(&(pxframe->list),
110 &(pxmitpriv->free_xmit_queue.queue));
113 pxmitpriv->free_xmitframe_cnt = NR_XMITFRAME;
117 _r8712_init_hw_txqueue(&pxmitpriv->be_txqueue, BE_QUEUE_INX);
118 _r8712_init_hw_txqueue(&pxmitpriv->bk_txqueue, BK_QUEUE_INX);
119 _r8712_init_hw_txqueue(&pxmitpriv->vi_txqueue, VI_QUEUE_INX);
120 _r8712_init_hw_txqueue(&pxmitpriv->vo_txqueue, VO_QUEUE_INX);
121 _r8712_init_hw_txqueue(&pxmitpriv->bmc_txqueue, BMC_QUEUE_INX);
122 pxmitpriv->frag_len = MAX_FRAG_THRESHOLD;
123 pxmitpriv->txirp_cnt = 1;
124 sema_init(&(pxmitpriv->tx_retevt), 0);
125 /*per AC pending irp*/
126 pxmitpriv->beq_cnt = 0;
127 pxmitpriv->bkq_cnt = 0;
128 pxmitpriv->viq_cnt = 0;
129 pxmitpriv->voq_cnt = 0;
131 _init_queue(&pxmitpriv->free_xmitbuf_queue);
132 _init_queue(&pxmitpriv->pending_xmitbuf_queue);
133 pxmitpriv->pallocated_xmitbuf = _malloc(NR_XMITBUFF *
134 sizeof(struct xmit_buf) + 4);
135 if (pxmitpriv->pallocated_xmitbuf == NULL)
137 pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 -
138 ((addr_t)(pxmitpriv->pallocated_xmitbuf) & 3);
139 pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
140 for (i = 0; i < NR_XMITBUFF; i++) {
141 _init_listhead(&pxmitbuf->list);
142 pxmitbuf->pallocated_buf = _malloc(MAX_XMITBUF_SZ +
144 if (pxmitbuf->pallocated_buf == NULL)
146 pxmitbuf->pbuf = pxmitbuf->pallocated_buf + XMITBUF_ALIGN_SZ -
147 ((addr_t) (pxmitbuf->pallocated_buf) &
148 (XMITBUF_ALIGN_SZ - 1));
149 r8712_xmit_resource_alloc(padapter, pxmitbuf);
150 list_insert_tail(&pxmitbuf->list,
151 &(pxmitpriv->free_xmitbuf_queue.queue));
154 pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF;
155 _init_workitem(&padapter->wkFilterRxFF0, r8712_SetFilter, padapter);
156 alloc_hwxmits(padapter);
157 init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
158 tasklet_init(&pxmitpriv->xmit_tasklet,
159 (void(*)(unsigned long))r8712_xmit_bh,
160 (unsigned long)padapter);
164 void _free_xmit_priv(struct xmit_priv *pxmitpriv)
167 struct _adapter *padapter = pxmitpriv->adapter;
168 struct xmit_frame *pxmitframe = (struct xmit_frame *)
169 pxmitpriv->pxmit_frame_buf;
170 struct xmit_buf *pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
172 if (pxmitpriv->pxmit_frame_buf == NULL)
174 for (i = 0; i < NR_XMITFRAME; i++) {
175 r8712_xmit_complete(padapter, pxmitframe);
178 for (i = 0; i < NR_XMITBUFF; i++) {
179 r8712_xmit_resource_free(padapter, pxmitbuf);
180 kfree(pxmitbuf->pallocated_buf);
183 kfree(pxmitpriv->pallocated_frame_buf);
184 kfree(pxmitpriv->pallocated_xmitbuf);
185 free_hwxmits(padapter);
188 sint r8712_update_attrib(struct _adapter *padapter, _pkt *pkt,
189 struct pkt_attrib *pattrib)
192 struct pkt_file pktfile;
193 struct sta_info *psta = NULL;
194 struct ethhdr etherhdr;
196 struct tx_cmd txdesc;
199 struct sta_priv *pstapriv = &padapter->stapriv;
200 struct security_priv *psecuritypriv = &padapter->securitypriv;
201 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
202 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
204 _r8712_open_pktfile(pkt, &pktfile);
206 i = _r8712_pktfile_read(&pktfile, (unsigned char *)ðerhdr, ETH_HLEN);
208 pattrib->ether_type = ntohs(etherhdr.h_proto);
212 /*If driver xmit ARP packet, driver can set ps mode to initial
213 * setting. It stands for getting DHCP or fix IP.*/
214 if (pattrib->ether_type == 0x0806) {
215 if (padapter->pwrctrlpriv.pwr_mode !=
216 padapter->registrypriv.power_mgnt) {
217 _cancel_timer(&(pmlmepriv->dhcp_timer), &bool);
218 r8712_set_ps_mode(padapter, padapter->registrypriv.
219 power_mgnt, padapter->registrypriv.smart_ps);
223 memcpy(pattrib->dst, ðerhdr.h_dest, ETH_ALEN);
224 memcpy(pattrib->src, ðerhdr.h_source, ETH_ALEN);
226 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
227 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
228 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
229 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
230 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
231 memcpy(pattrib->ra, get_bssid(pmlmepriv), ETH_ALEN);
232 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
233 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
234 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
235 memcpy(pattrib->ta, get_bssid(pmlmepriv), ETH_ALEN);
236 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
237 /*firstly, filter packet not belongs to mp*/
238 if (pattrib->ether_type != 0x8712)
240 /* for mp storing the txcmd per packet,
241 * according to the info of txcmd to update pattrib */
242 /*get MP_TXDESC_SIZE bytes txcmd per packet*/
243 i = _r8712_pktfile_read(&pktfile, (u8 *)&txdesc, TXDESC_SIZE);
244 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
245 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
248 /* r8712_xmitframe_coalesce() overwrite this!*/
249 pattrib->pktlen = pktfile.pkt_len;
250 if (ETH_P_IP == pattrib->ether_type) {
251 /* The following is for DHCP and ARP packet, we use cck1M to
252 * tx these packets and let LPS awake some time
253 * to prevent DHCP protocol fail */
255 _r8712_pktfile_read(&pktfile, &tmp[0], 24);
256 pattrib->dhcp_pkt = 0;
257 if (pktfile.pkt_len > 282) {/*MINIMUM_DHCP_PACKET_SIZE)*/
258 if (ETH_P_IP == pattrib->ether_type) {/* IP header*/
259 if (((tmp[21] == 68) && (tmp[23] == 67)) ||
260 ((tmp[21] == 67) && (tmp[23] == 68))) {
261 /* 68 : UDP BOOTP client
262 * 67 : UDP BOOTP server
263 * Use low rate to send DHCP packet.*/
264 pattrib->dhcp_pkt = 1;
269 bmcast = IS_MCAST(pattrib->ra);
272 psta = r8712_get_bcmc_stainfo(padapter);
275 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
276 psta = r8712_get_stainfo(pstapriv,
277 get_bssid(pmlmepriv));
280 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
281 if (psta == NULL) /* drop the pkt */
283 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE))
286 pattrib->mac_id = psta->mac_id;
291 pattrib->psta = psta;
293 /* if we cannot get psta => drrp the pkt */
297 pattrib->ack_policy = 0;
298 /* get ether_hdr_len */
299 pattrib->pkt_hdrlen = ETH_HLEN;
301 if (pqospriv->qos_option)
302 r8712_set_qos(&pktfile, pattrib);
304 pattrib->hdrlen = WLAN_HDR_A3_LEN;
305 pattrib->subtype = WIFI_DATA_TYPE;
306 pattrib->priority = 0;
308 if (psta->ieee8021x_blocked == true) {
309 pattrib->encrypt = 0;
310 if ((pattrib->ether_type != 0x888e) &&
311 (check_fwstate(pmlmepriv, WIFI_MP_STATE) == false))
314 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast);
315 switch (pattrib->encrypt) {
319 pattrib->icv_len = 4;
323 pattrib->icv_len = 4;
324 if (padapter->securitypriv.busetkipkey == _FAIL)
329 pattrib->icv_len = 8;
333 pattrib->icv_len = 0;
337 if (pattrib->encrypt &&
338 ((padapter->securitypriv.sw_encrypt == true) ||
339 (psecuritypriv->hw_decrypted == false)))
340 pattrib->bswenc = true;
342 pattrib->bswenc = false;
343 /* if in MP_STATE, update pkt_attrib from mp_txcmd, and overwrite
344 * some settings above.*/
345 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
346 pattrib->priority = (txdesc.txdw1 >> QSEL_SHT) & 0x1f;
350 static sint xmitframe_addmic(struct _adapter *padapter,
351 struct xmit_frame *pxmitframe)
353 u32 curfragnum, length, datalen;
354 u8 *pframe, *payload, mic[8];
355 struct mic_data micdata;
356 struct sta_info *stainfo;
357 struct qos_priv *pqospriv = &(padapter->mlmepriv.qospriv);
358 struct pkt_attrib *pattrib = &pxmitframe->attrib;
359 struct security_priv *psecuritypriv = &padapter->securitypriv;
360 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
361 u8 priority[4] = {0x0, 0x0, 0x0, 0x0};
362 sint bmcst = IS_MCAST(pattrib->ra);
365 stainfo = pattrib->psta;
367 stainfo = r8712_get_stainfo(&padapter->stapriv,
369 if (pattrib->encrypt == _TKIP_) {
371 if (stainfo != NULL) {
372 u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
373 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
375 datalen = pattrib->pktlen - pattrib->hdrlen;
376 pframe = pxmitframe->buf_addr + TXDESC_OFFSET;
378 if (!memcmp(psecuritypriv->XGrptxmickey
379 [psecuritypriv->XGrpKeyid].skey,
382 /*start to calculate the mic code*/
383 r8712_secmicsetkey(&micdata,
385 XGrptxmickey[psecuritypriv->
388 if (!memcmp(&stainfo->tkiptxmickey.skey[0],
391 /* start to calculate the mic code */
392 r8712_secmicsetkey(&micdata,
393 &stainfo->tkiptxmickey.skey[0]);
395 if (pframe[1] & 1) { /* ToDS==1 */
396 r8712_secmicappend(&micdata,
397 &pframe[16], 6); /*DA*/
398 if (pframe[1]&2) /* From Ds==1 */
399 r8712_secmicappend(&micdata,
402 r8712_secmicappend(&micdata,
404 } else { /* ToDS==0 */
405 r8712_secmicappend(&micdata,
406 &pframe[4], 6); /* DA */
407 if (pframe[1]&2) /* From Ds==1 */
408 r8712_secmicappend(&micdata,
411 r8712_secmicappend(&micdata,
414 if (pqospriv->qos_option == 1)
415 priority[0] = (u8)pxmitframe->
417 r8712_secmicappend(&micdata, &priority[0], 4);
419 for (curfragnum = 0; curfragnum < pattrib->nr_frags;
421 payload = (u8 *)RND4((addr_t)(payload));
422 payload = payload+pattrib->
423 hdrlen+pattrib->iv_len;
424 if ((curfragnum + 1) == pattrib->nr_frags) {
425 length = pattrib->last_txcmdsz -
428 ((psecuritypriv->sw_encrypt)
429 ? pattrib->icv_len : 0);
430 r8712_secmicappend(&micdata, payload,
432 payload = payload+length;
434 length = pxmitpriv->frag_len -
435 pattrib->hdrlen-pattrib->iv_len -
436 ((psecuritypriv->sw_encrypt) ?
437 pattrib->icv_len : 0);
438 r8712_secmicappend(&micdata, payload,
440 payload = payload + length +
444 r8712_secgetmic(&micdata, &(mic[0]));
445 /* add mic code and add the mic code length in
447 memcpy(payload, &(mic[0]), 8);
448 pattrib->last_txcmdsz += 8;
449 payload = payload-pattrib->last_txcmdsz + 8;
455 static sint xmitframe_swencrypt(struct _adapter *padapter,
456 struct xmit_frame *pxmitframe)
458 struct pkt_attrib *pattrib = &pxmitframe->attrib;
460 if (pattrib->bswenc) {
461 switch (pattrib->encrypt) {
464 r8712_wep_encrypt(padapter, (u8 *)pxmitframe);
467 r8712_tkip_encrypt(padapter, (u8 *)pxmitframe);
470 r8712_aes_encrypt(padapter, (u8 *)pxmitframe);
479 static sint make_wlanhdr(struct _adapter *padapter , u8 *hdr,
480 struct pkt_attrib *pattrib)
484 struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr;
485 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
486 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
487 u16 *fctrl = &pwlanhdr->frame_ctl;
488 memset(hdr, 0, WLANHDR_OFFSET);
489 SetFrameSubType(fctrl, pattrib->subtype);
490 if (pattrib->subtype & WIFI_DATA_TYPE) {
491 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true)) {
492 /* to_ds = 1, fr_ds = 0; */
494 memcpy(pwlanhdr->addr1, get_bssid(pmlmepriv),
496 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
497 memcpy(pwlanhdr->addr3, pattrib->dst, ETH_ALEN);
498 } else if ((check_fwstate(pmlmepriv, WIFI_AP_STATE) == true)) {
499 /* to_ds = 0, fr_ds = 1; */
501 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
502 memcpy(pwlanhdr->addr2, get_bssid(pmlmepriv),
504 memcpy(pwlanhdr->addr3, pattrib->src, ETH_ALEN);
505 } else if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true)
506 || (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)
508 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
509 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
510 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
512 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
513 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
514 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
515 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
520 if (pattrib->encrypt)
522 if (pqospriv->qos_option) {
523 qc = (unsigned short *)(hdr + pattrib->hdrlen - 2);
524 if (pattrib->priority)
525 SetPriority(qc, pattrib->priority);
526 SetAckpolicy(qc, pattrib->ack_policy);
528 /* TODO: fill HT Control Field */
529 /* Update Seq Num will be handled by f/w */
531 struct sta_info *psta;
533 sint bmcst = IS_MCAST(pattrib->ra);
535 psta = pattrib->psta;
538 psta = r8712_get_bcmc_stainfo(padapter);
541 r8712_get_stainfo(&padapter->stapriv,
545 psta->sta_xmitpriv.txseq_tid
546 [pattrib->priority]++;
547 psta->sta_xmitpriv.txseq_tid[pattrib->priority]
549 pattrib->seqnum = psta->sta_xmitpriv.
550 txseq_tid[pattrib->priority];
551 SetSeqNum(hdr, pattrib->seqnum);
558 static sint r8712_put_snap(u8 *data, u16 h_proto)
560 struct ieee80211_snap_hdr *snap;
563 snap = (struct ieee80211_snap_hdr *)data;
567 if (h_proto == 0x8137 || h_proto == 0x80f3)
571 snap->oui[0] = oui[0];
572 snap->oui[1] = oui[1];
573 snap->oui[2] = oui[2];
574 *(u16 *)(data + SNAP_SIZE) = htons(h_proto);
575 return SNAP_SIZE + sizeof(u16);
579 * This sub-routine will perform all the following:
580 * 1. remove 802.3 header.
581 * 2. create wlan_header, based on the info in pxmitframe
582 * 3. append sta's iv/ext-iv
584 * 5. move frag chunk from pframe to pxmitframe->mem
585 * 6. apply sw-encrypt, if necessary.
587 sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt,
588 struct xmit_frame *pxmitframe)
590 struct pkt_file pktfile;
592 sint frg_len, mpdu_len, llc_sz;
596 u8 *pframe, *mem_start, *ptxdesc;
597 struct sta_info *psta;
598 struct security_priv *psecuritypriv = &padapter->securitypriv;
599 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
600 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
601 struct pkt_attrib *pattrib = &pxmitframe->attrib;
603 sint bmcst = IS_MCAST(pattrib->ra);
605 if (pattrib->psta == NULL)
607 psta = pattrib->psta;
608 if (pxmitframe->buf_addr == NULL)
610 pbuf_start = pxmitframe->buf_addr;
611 ptxdesc = pbuf_start;
612 mem_start = pbuf_start + TXDESC_OFFSET;
613 if (make_wlanhdr(padapter, mem_start, pattrib) == _FAIL)
615 _r8712_open_pktfile(pkt, &pktfile);
616 _r8712_pktfile_read(&pktfile, NULL, (uint) pattrib->pkt_hdrlen);
617 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
618 /* truncate TXDESC_SIZE bytes txcmd if at mp mode for 871x */
619 if (pattrib->ether_type == 0x8712) {
620 /* take care - update_txdesc overwrite this */
621 _r8712_pktfile_read(&pktfile, ptxdesc, TXDESC_SIZE);
624 pattrib->pktlen = pktfile.pkt_len;
626 frg_len = pxmitpriv->frag_len - 4;
632 pframe += pattrib->hdrlen;
633 mpdu_len -= pattrib->hdrlen;
634 /* adding icv, if necessary...*/
635 if (pattrib->iv_len) {
637 switch (pattrib->encrypt) {
640 WEP_IV(pattrib->iv, psta->txpn,
651 TKIP_IV(pattrib->iv, psta->txpn,
656 AES_IV(pattrib->iv, psta->txpn,
660 AES_IV(pattrib->iv, psta->txpn,
665 memcpy(pframe, pattrib->iv, pattrib->iv_len);
666 pframe += pattrib->iv_len;
667 mpdu_len -= pattrib->iv_len;
670 llc_sz = r8712_put_snap(pframe, pattrib->ether_type);
674 if ((pattrib->icv_len > 0) && (pattrib->bswenc))
675 mpdu_len -= pattrib->icv_len;
677 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
680 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
683 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) {
684 memcpy(pframe, pattrib->icv, pattrib->icv_len);
685 pframe += pattrib->icv_len;
688 if (bmcst || (r8712_endofpktfile(&pktfile) == true)) {
689 pattrib->nr_frags = frg_inx;
690 pattrib->last_txcmdsz = pattrib->hdrlen +
692 ((pattrib->nr_frags == 1) ?
695 pattrib->icv_len : 0) + mem_sz;
696 ClearMFrag(mem_start);
699 addr = (addr_t)(pframe);
700 mem_start = (unsigned char *)RND4(addr) + TXDESC_OFFSET;
701 memcpy(mem_start, pbuf_start + TXDESC_OFFSET, pattrib->hdrlen);
704 if (xmitframe_addmic(padapter, pxmitframe) == _FAIL)
706 xmitframe_swencrypt(padapter, pxmitframe);
710 void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len)
715 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
716 struct registry_priv *pregistrypriv = &padapter->registrypriv;
718 switch (pxmitpriv->vcs_setting) {
720 pxmitpriv->vcs = NONE_VCS;
726 perp = r8712_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len);
728 pxmitpriv->vcs = NONE_VCS;
730 protection = (*(perp + 2)) & BIT(1);
732 if (pregistrypriv->vcs_type == RTS_CTS)
733 pxmitpriv->vcs = RTS_CTS;
735 pxmitpriv->vcs = CTS_TO_SELF;
737 pxmitpriv->vcs = NONE_VCS;
743 struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv)
746 struct xmit_buf *pxmitbuf = NULL;
747 struct list_head *plist, *phead;
748 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
750 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
751 if (_queue_empty(pfree_xmitbuf_queue) == true)
754 phead = get_list_head(pfree_xmitbuf_queue);
755 plist = get_next(phead);
756 pxmitbuf = LIST_CONTAINOR(plist, struct xmit_buf, list);
757 list_delete(&(pxmitbuf->list));
759 if (pxmitbuf != NULL)
760 pxmitpriv->free_xmitbuf_cnt--;
761 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
765 int r8712_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
768 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
770 if (pxmitbuf == NULL)
772 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
773 list_delete(&pxmitbuf->list);
774 list_insert_tail(&(pxmitbuf->list), get_list_head(pfree_xmitbuf_queue));
775 pxmitpriv->free_xmitbuf_cnt++;
776 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
783 2. RXENTRY (rx_thread or RX_ISR/RX_CallBack)
785 If we turn on USE_RXTHREAD, then, no need for critical section.
786 Otherwise, we must use _enter/_exit critical to protect free_xmit_queue...
788 Must be very very cautious...
792 struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv)
795 Please remember to use all the osdep_service api,
796 and lock/unlock or _enter/_exit critical to protect
800 struct xmit_frame *pxframe = NULL;
801 struct list_head *plist, *phead;
802 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
804 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
805 if (_queue_empty(pfree_xmit_queue) == true)
808 phead = get_list_head(pfree_xmit_queue);
809 plist = get_next(phead);
810 pxframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
811 list_delete(&(pxframe->list));
813 if (pxframe != NULL) {
814 pxmitpriv->free_xmitframe_cnt--;
815 pxframe->buf_addr = NULL;
816 pxframe->pxmitbuf = NULL;
817 pxframe->attrib.psta = NULL;
820 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
824 void r8712_free_xmitframe(struct xmit_priv *pxmitpriv,
825 struct xmit_frame *pxmitframe)
828 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
829 struct _adapter *padapter = pxmitpriv->adapter;
830 struct sk_buff *pndis_pkt = NULL;
832 if (pxmitframe == NULL)
834 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
835 list_delete(&pxmitframe->list);
836 if (pxmitframe->pkt) {
837 pndis_pkt = pxmitframe->pkt;
838 pxmitframe->pkt = NULL;
840 list_insert_tail(&pxmitframe->list, get_list_head(pfree_xmit_queue));
841 pxmitpriv->free_xmitframe_cnt++;
842 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
843 if (netif_queue_stopped(padapter->pnetdev))
844 netif_wake_queue(padapter->pnetdev);
847 void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv,
848 struct xmit_frame *pxmitframe)
850 if (pxmitframe == NULL)
852 if (pxmitframe->frame_tag == DATA_FRAMETAG)
853 r8712_free_xmitframe(pxmitpriv, pxmitframe);
856 void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv,
857 struct __queue *pframequeue)
860 struct list_head *plist, *phead;
861 struct xmit_frame *pxmitframe;
863 spin_lock_irqsave(&(pframequeue->lock), irqL);
864 phead = get_list_head(pframequeue);
865 plist = get_next(phead);
866 while (end_of_queue_search(phead, plist) == false) {
867 pxmitframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
868 plist = get_next(plist);
869 r8712_free_xmitframe(pxmitpriv, pxmitframe);
871 spin_unlock_irqrestore(&(pframequeue->lock), irqL);
874 static inline struct tx_servq *get_sta_pending(struct _adapter *padapter,
875 struct __queue **ppstapending,
876 struct sta_info *psta, sint up)
879 struct tx_servq *ptxservq;
880 struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
885 ptxservq = &(psta->sta_xmitpriv.bk_q);
886 *ppstapending = &padapter->xmitpriv.bk_pending;
887 (phwxmits+3)->accnt++;
891 ptxservq = &(psta->sta_xmitpriv.vi_q);
892 *ppstapending = &padapter->xmitpriv.vi_pending;
893 (phwxmits+1)->accnt++;
897 ptxservq = &(psta->sta_xmitpriv.vo_q);
898 *ppstapending = &padapter->xmitpriv.vo_pending;
899 (phwxmits+0)->accnt++;
904 ptxservq = &(psta->sta_xmitpriv.be_q);
905 *ppstapending = &padapter->xmitpriv.be_pending;
906 (phwxmits + 2)->accnt++;
913 * Will enqueue pxmitframe to the proper queue, and indicate it
914 * to xx_pending list.....
916 sint r8712_xmit_classifier(struct _adapter *padapter,
917 struct xmit_frame *pxmitframe)
920 struct __queue *pstapending;
921 struct sta_info *psta;
922 struct tx_servq *ptxservq;
923 struct pkt_attrib *pattrib = &pxmitframe->attrib;
924 struct sta_priv *pstapriv = &padapter->stapriv;
925 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
926 sint bmcst = IS_MCAST(pattrib->ra);
929 psta = pattrib->psta;
932 psta = r8712_get_bcmc_stainfo(padapter);
934 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
935 psta = r8712_get_stainfo(pstapriv,
936 get_bssid(pmlmepriv));
938 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
943 ptxservq = get_sta_pending(padapter, &pstapending,
944 psta, pattrib->priority);
945 spin_lock_irqsave(&pstapending->lock, irqL0);
946 if (is_list_empty(&ptxservq->tx_pending))
947 list_insert_tail(&ptxservq->tx_pending,
948 get_list_head(pstapending));
949 list_insert_tail(&pxmitframe->list,
950 get_list_head(&ptxservq->sta_pending));
952 spin_unlock_irqrestore(&pstapending->lock, irqL0);
956 static void alloc_hwxmits(struct _adapter *padapter)
958 struct hw_xmit *hwxmits;
959 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
961 pxmitpriv->hwxmit_entry = HWXMIT_ENTRY;
962 pxmitpriv->hwxmits = (struct hw_xmit *)_malloc(sizeof(struct hw_xmit) *
963 pxmitpriv->hwxmit_entry);
964 if (pxmitpriv->hwxmits == NULL)
966 hwxmits = pxmitpriv->hwxmits;
967 if (pxmitpriv->hwxmit_entry == 5) {
968 pxmitpriv->bmc_txqueue.head = 0;
969 hwxmits[0] .phwtxqueue = &pxmitpriv->bmc_txqueue;
970 hwxmits[0] .sta_queue = &pxmitpriv->bm_pending;
971 pxmitpriv->vo_txqueue.head = 0;
972 hwxmits[1] .phwtxqueue = &pxmitpriv->vo_txqueue;
973 hwxmits[1] .sta_queue = &pxmitpriv->vo_pending;
974 pxmitpriv->vi_txqueue.head = 0;
975 hwxmits[2] .phwtxqueue = &pxmitpriv->vi_txqueue;
976 hwxmits[2] .sta_queue = &pxmitpriv->vi_pending;
977 pxmitpriv->bk_txqueue.head = 0;
978 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
979 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
980 pxmitpriv->be_txqueue.head = 0;
981 hwxmits[4] .phwtxqueue = &pxmitpriv->be_txqueue;
982 hwxmits[4] .sta_queue = &pxmitpriv->be_pending;
983 } else if (pxmitpriv->hwxmit_entry == 4) {
984 pxmitpriv->vo_txqueue.head = 0;
985 hwxmits[0] .phwtxqueue = &pxmitpriv->vo_txqueue;
986 hwxmits[0] .sta_queue = &pxmitpriv->vo_pending;
987 pxmitpriv->vi_txqueue.head = 0;
988 hwxmits[1] .phwtxqueue = &pxmitpriv->vi_txqueue;
989 hwxmits[1] .sta_queue = &pxmitpriv->vi_pending;
990 pxmitpriv->be_txqueue.head = 0;
991 hwxmits[2] .phwtxqueue = &pxmitpriv->be_txqueue;
992 hwxmits[2] .sta_queue = &pxmitpriv->be_pending;
993 pxmitpriv->bk_txqueue.head = 0;
994 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
995 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
999 static void free_hwxmits(struct _adapter *padapter)
1001 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1003 kfree(pxmitpriv->hwxmits);
1006 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry)
1010 for (i = 0; i < entry; i++, phwxmit++) {
1011 spin_lock_init(&phwxmit->xmit_lock);
1012 _init_listhead(&phwxmit->pending);
1013 phwxmit->txcmdcnt = 0;
1018 void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
1019 struct xmit_buf *pxmitbuf)
1021 /* pxmitbuf attach to pxmitframe */
1022 pxmitframe->pxmitbuf = pxmitbuf;
1023 /* urb and irp connection */
1024 pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
1025 /* buffer addr assoc */
1026 pxmitframe->buf_addr = pxmitbuf->pbuf;
1027 /* pxmitframe attach to pxmitbuf */
1028 pxmitbuf->priv_data = pxmitframe;
1032 * tx_action == 0 == no frames to transmit
1033 * tx_action > 0 ==> we have frames to transmit
1034 * tx_action < 0 ==> we have frames to transmit, but TXFF is not even enough
1035 * to transmit 1 frame.
1038 int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe)
1042 struct xmit_buf *pxmitbuf = NULL;
1043 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1044 struct pkt_attrib *pattrib = &pxmitframe->attrib;
1046 r8712_do_queue_select(padapter, pattrib);
1047 spin_lock_irqsave(&pxmitpriv->lock, irqL);
1048 if (r8712_txframes_sta_ac_pending(padapter, pattrib) > 0) {
1050 r8712_xmit_enqueue(padapter, pxmitframe);
1051 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1054 pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv);
1055 if (pxmitbuf == NULL) { /*enqueue packet*/
1057 r8712_xmit_enqueue(padapter, pxmitframe);
1058 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1059 } else { /*dump packet directly*/
1060 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1062 xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
1063 r8712_xmit_direct(padapter, pxmitframe);