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"
34 #include "osdep_intf.h"
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);
44 static void _init_txservq(struct tx_servq *ptxservq)
46 INIT_LIST_HEAD(&ptxservq->tx_pending);
47 _init_queue(&ptxservq->sta_pending);
51 void _r8712_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv)
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);
64 sint _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv,
65 struct _adapter *padapter)
68 struct xmit_buf *pxmitbuf;
69 struct xmit_frame *pxframe;
71 memset((unsigned char *)pxmitpriv, 0, sizeof(struct xmit_priv));
72 spin_lock_init(&pxmitpriv->lock);
74 Please insert all the queue initialization using _init_queue below
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);
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...
90 pxmitpriv->pallocated_frame_buf = kmalloc(NR_XMITFRAME * sizeof(struct xmit_frame) + 4,
92 if (pxmitpriv->pallocated_frame_buf == NULL) {
93 pxmitpriv->pxmit_frame_buf = NULL;
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;
104 pxframe->buf_addr = NULL;
105 pxframe->pxmitbuf = NULL;
106 list_add_tail(&(pxframe->list),
107 &(pxmitpriv->free_xmit_queue.queue));
110 pxmitpriv->free_xmitframe_cnt = NR_XMITFRAME;
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;
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,
131 if (pxmitpriv->pallocated_xmitbuf == NULL)
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,
140 if (pxmitbuf->pallocated_buf == NULL)
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));
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);
160 void _free_xmit_priv(struct xmit_priv *pxmitpriv)
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;
168 if (pxmitpriv->pxmit_frame_buf == NULL)
170 for (i = 0; i < NR_XMITFRAME; i++) {
171 r8712_xmit_complete(padapter, pxmitframe);
174 for (i = 0; i < NR_XMITBUFF; i++) {
175 r8712_xmit_resource_free(padapter, pxmitbuf);
176 kfree(pxmitbuf->pallocated_buf);
179 kfree(pxmitpriv->pallocated_frame_buf);
180 kfree(pxmitpriv->pallocated_xmitbuf);
181 free_hwxmits(padapter);
184 sint r8712_update_attrib(struct _adapter *padapter, _pkt *pkt,
185 struct pkt_attrib *pattrib)
188 struct pkt_file pktfile;
189 struct sta_info *psta = NULL;
190 struct ethhdr etherhdr;
192 struct tx_cmd txdesc;
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;
200 _r8712_open_pktfile(pkt, &pktfile);
202 i = _r8712_pktfile_read(&pktfile, (unsigned char *)ðerhdr, ETH_HLEN);
204 pattrib->ether_type = ntohs(etherhdr.h_proto);
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);
219 memcpy(pattrib->dst, ðerhdr.h_dest, ETH_ALEN);
220 memcpy(pattrib->src, ðerhdr.h_source, ETH_ALEN);
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)
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);
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 */
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;
266 bmcast = IS_MCAST(pattrib->ra);
269 psta = r8712_get_bcmc_stainfo(padapter);
272 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
273 psta = r8712_get_stainfo(pstapriv,
274 get_bssid(pmlmepriv));
277 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
278 if (psta == NULL) /* drop the pkt */
280 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE))
283 pattrib->mac_id = psta->mac_id;
288 pattrib->psta = psta;
290 /* if we cannot get psta => drrp the pkt */
294 pattrib->ack_policy = 0;
295 /* get ether_hdr_len */
296 pattrib->pkt_hdrlen = ETH_HLEN;
298 if (pqospriv->qos_option)
299 r8712_set_qos(&pktfile, pattrib);
301 pattrib->hdrlen = WLAN_HDR_A3_LEN;
302 pattrib->subtype = WIFI_DATA_TYPE;
303 pattrib->priority = 0;
305 if (psta->ieee8021x_blocked == true) {
306 pattrib->encrypt = 0;
307 if ((pattrib->ether_type != 0x888e) &&
308 (check_fwstate(pmlmepriv, WIFI_MP_STATE) == false))
311 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast);
312 switch (pattrib->encrypt) {
316 pattrib->icv_len = 4;
320 pattrib->icv_len = 4;
321 if (padapter->securitypriv.busetkipkey == _FAIL)
326 pattrib->icv_len = 8;
330 pattrib->icv_len = 0;
334 if (pattrib->encrypt &&
335 ((padapter->securitypriv.sw_encrypt == true) ||
336 (psecuritypriv->hw_decrypted == false)))
337 pattrib->bswenc = true;
339 pattrib->bswenc = false;
340 /* if in MP_STATE, update pkt_attrib from mp_txcmd, and overwrite
341 * some settings above.*/
342 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
343 pattrib->priority = (txdesc.txdw1 >> QSEL_SHT) & 0x1f;
347 static sint xmitframe_addmic(struct _adapter *padapter,
348 struct xmit_frame *pxmitframe)
350 u32 curfragnum, length, datalen;
351 u8 *pframe, *payload, mic[8];
352 struct mic_data micdata;
353 struct sta_info *stainfo;
354 struct qos_priv *pqospriv = &(padapter->mlmepriv.qospriv);
355 struct pkt_attrib *pattrib = &pxmitframe->attrib;
356 struct security_priv *psecuritypriv = &padapter->securitypriv;
357 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
358 u8 priority[4] = {0x0, 0x0, 0x0, 0x0};
359 sint bmcst = IS_MCAST(pattrib->ra);
362 stainfo = pattrib->psta;
364 stainfo = r8712_get_stainfo(&padapter->stapriv,
366 if (pattrib->encrypt == _TKIP_) {
368 if (stainfo != NULL) {
369 u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
370 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
372 datalen = pattrib->pktlen - pattrib->hdrlen;
373 pframe = pxmitframe->buf_addr + TXDESC_OFFSET;
375 if (!memcmp(psecuritypriv->XGrptxmickey
376 [psecuritypriv->XGrpKeyid].skey,
379 /*start to calculate the mic code*/
380 r8712_secmicsetkey(&micdata,
382 XGrptxmickey[psecuritypriv->
385 if (!memcmp(&stainfo->tkiptxmickey.skey[0],
388 /* start to calculate the mic code */
389 r8712_secmicsetkey(&micdata,
390 &stainfo->tkiptxmickey.skey[0]);
392 if (pframe[1] & 1) { /* ToDS==1 */
393 r8712_secmicappend(&micdata,
394 &pframe[16], 6); /*DA*/
395 if (pframe[1]&2) /* From Ds==1 */
396 r8712_secmicappend(&micdata,
399 r8712_secmicappend(&micdata,
401 } else { /* ToDS==0 */
402 r8712_secmicappend(&micdata,
403 &pframe[4], 6); /* DA */
404 if (pframe[1]&2) /* From Ds==1 */
405 r8712_secmicappend(&micdata,
408 r8712_secmicappend(&micdata,
411 if (pqospriv->qos_option == 1)
412 priority[0] = (u8)pxmitframe->
414 r8712_secmicappend(&micdata, &priority[0], 4);
416 for (curfragnum = 0; curfragnum < pattrib->nr_frags;
418 payload = (u8 *)RND4((addr_t)(payload));
419 payload = payload+pattrib->
420 hdrlen+pattrib->iv_len;
421 if ((curfragnum + 1) == pattrib->nr_frags) {
422 length = pattrib->last_txcmdsz -
425 ((psecuritypriv->sw_encrypt)
426 ? pattrib->icv_len : 0);
427 r8712_secmicappend(&micdata, payload,
429 payload = payload+length;
431 length = pxmitpriv->frag_len -
432 pattrib->hdrlen-pattrib->iv_len -
433 ((psecuritypriv->sw_encrypt) ?
434 pattrib->icv_len : 0);
435 r8712_secmicappend(&micdata, payload,
437 payload = payload + length +
441 r8712_secgetmic(&micdata, &(mic[0]));
442 /* add mic code and add the mic code length in
444 memcpy(payload, &(mic[0]), 8);
445 pattrib->last_txcmdsz += 8;
446 payload = payload-pattrib->last_txcmdsz + 8;
452 static sint xmitframe_swencrypt(struct _adapter *padapter,
453 struct xmit_frame *pxmitframe)
455 struct pkt_attrib *pattrib = &pxmitframe->attrib;
457 if (pattrib->bswenc) {
458 switch (pattrib->encrypt) {
461 r8712_wep_encrypt(padapter, (u8 *)pxmitframe);
464 r8712_tkip_encrypt(padapter, (u8 *)pxmitframe);
467 r8712_aes_encrypt(padapter, (u8 *)pxmitframe);
476 static sint make_wlanhdr(struct _adapter *padapter , u8 *hdr,
477 struct pkt_attrib *pattrib)
481 struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr;
482 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
483 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
484 u16 *fctrl = &pwlanhdr->frame_ctl;
486 memset(hdr, 0, WLANHDR_OFFSET);
487 SetFrameSubType(fctrl, pattrib->subtype);
488 if (pattrib->subtype & WIFI_DATA_TYPE) {
489 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true)) {
490 /* to_ds = 1, fr_ds = 0; */
492 memcpy(pwlanhdr->addr1, get_bssid(pmlmepriv),
494 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
495 memcpy(pwlanhdr->addr3, pattrib->dst, ETH_ALEN);
496 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
497 /* to_ds = 0, fr_ds = 1; */
499 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
500 memcpy(pwlanhdr->addr2, get_bssid(pmlmepriv),
502 memcpy(pwlanhdr->addr3, pattrib->src, ETH_ALEN);
503 } else if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true)
504 || (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)
506 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
507 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
508 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
510 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
511 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
512 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
513 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
518 if (pattrib->encrypt)
520 if (pqospriv->qos_option) {
521 qc = (unsigned short *)(hdr + pattrib->hdrlen - 2);
522 if (pattrib->priority)
523 SetPriority(qc, pattrib->priority);
524 SetAckpolicy(qc, pattrib->ack_policy);
526 /* TODO: fill HT Control Field */
527 /* Update Seq Num will be handled by f/w */
529 struct sta_info *psta;
530 sint bmcst = IS_MCAST(pattrib->ra);
533 psta = pattrib->psta;
536 psta = r8712_get_bcmc_stainfo(padapter);
539 r8712_get_stainfo(&padapter->stapriv,
543 psta->sta_xmitpriv.txseq_tid
544 [pattrib->priority]++;
545 psta->sta_xmitpriv.txseq_tid[pattrib->priority]
547 pattrib->seqnum = psta->sta_xmitpriv.
548 txseq_tid[pattrib->priority];
549 SetSeqNum(hdr, pattrib->seqnum);
556 static sint r8712_put_snap(u8 *data, u16 h_proto)
558 struct ieee80211_snap_hdr *snap;
561 snap = (struct ieee80211_snap_hdr *)data;
565 if (h_proto == 0x8137 || h_proto == 0x80f3)
569 snap->oui[0] = oui[0];
570 snap->oui[1] = oui[1];
571 snap->oui[2] = oui[2];
572 *(u16 *)(data + SNAP_SIZE) = htons(h_proto);
573 return SNAP_SIZE + sizeof(u16);
577 * This sub-routine will perform all the following:
578 * 1. remove 802.3 header.
579 * 2. create wlan_header, based on the info in pxmitframe
580 * 3. append sta's iv/ext-iv
582 * 5. move frag chunk from pframe to pxmitframe->mem
583 * 6. apply sw-encrypt, if necessary.
585 sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt,
586 struct xmit_frame *pxmitframe)
588 struct pkt_file pktfile;
590 sint frg_len, mpdu_len, llc_sz;
594 u8 *pframe, *mem_start, *ptxdesc;
595 struct sta_info *psta;
596 struct security_priv *psecuritypriv = &padapter->securitypriv;
597 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
598 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
599 struct pkt_attrib *pattrib = &pxmitframe->attrib;
601 sint bmcst = IS_MCAST(pattrib->ra);
603 if (pattrib->psta == NULL)
605 psta = pattrib->psta;
606 if (pxmitframe->buf_addr == NULL)
608 pbuf_start = pxmitframe->buf_addr;
609 ptxdesc = pbuf_start;
610 mem_start = pbuf_start + TXDESC_OFFSET;
611 if (make_wlanhdr(padapter, mem_start, pattrib) == _FAIL)
613 _r8712_open_pktfile(pkt, &pktfile);
614 _r8712_pktfile_read(&pktfile, NULL, (uint) pattrib->pkt_hdrlen);
615 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
616 /* truncate TXDESC_SIZE bytes txcmd if at mp mode for 871x */
617 if (pattrib->ether_type == 0x8712) {
618 /* take care - update_txdesc overwrite this */
619 _r8712_pktfile_read(&pktfile, ptxdesc, TXDESC_SIZE);
622 pattrib->pktlen = pktfile.pkt_len;
624 frg_len = pxmitpriv->frag_len - 4;
630 pframe += pattrib->hdrlen;
631 mpdu_len -= pattrib->hdrlen;
632 /* adding icv, if necessary...*/
633 if (pattrib->iv_len) {
635 switch (pattrib->encrypt) {
638 WEP_IV(pattrib->iv, psta->txpn,
649 TKIP_IV(pattrib->iv, psta->txpn,
654 AES_IV(pattrib->iv, psta->txpn,
658 AES_IV(pattrib->iv, psta->txpn,
663 memcpy(pframe, pattrib->iv, pattrib->iv_len);
664 pframe += pattrib->iv_len;
665 mpdu_len -= pattrib->iv_len;
668 llc_sz = r8712_put_snap(pframe, pattrib->ether_type);
672 if ((pattrib->icv_len > 0) && (pattrib->bswenc))
673 mpdu_len -= pattrib->icv_len;
675 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
678 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
681 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) {
682 memcpy(pframe, pattrib->icv, pattrib->icv_len);
683 pframe += pattrib->icv_len;
686 if (bmcst || (r8712_endofpktfile(&pktfile) == true)) {
687 pattrib->nr_frags = frg_inx;
688 pattrib->last_txcmdsz = pattrib->hdrlen +
690 ((pattrib->nr_frags == 1) ?
693 pattrib->icv_len : 0) + mem_sz;
694 ClearMFrag(mem_start);
697 addr = (addr_t)(pframe);
698 mem_start = (unsigned char *)RND4(addr) + TXDESC_OFFSET;
699 memcpy(mem_start, pbuf_start + TXDESC_OFFSET, pattrib->hdrlen);
702 if (xmitframe_addmic(padapter, pxmitframe) == _FAIL)
704 xmitframe_swencrypt(padapter, pxmitframe);
708 void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len)
713 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
714 struct registry_priv *pregistrypriv = &padapter->registrypriv;
716 switch (pxmitpriv->vcs_setting) {
718 pxmitpriv->vcs = NONE_VCS;
724 perp = r8712_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len);
726 pxmitpriv->vcs = NONE_VCS;
728 protection = (*(perp + 2)) & BIT(1);
730 if (pregistrypriv->vcs_type == RTS_CTS)
731 pxmitpriv->vcs = RTS_CTS;
733 pxmitpriv->vcs = CTS_TO_SELF;
735 pxmitpriv->vcs = NONE_VCS;
741 struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv)
744 struct xmit_buf *pxmitbuf = NULL;
745 struct list_head *plist, *phead;
746 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
748 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
749 if (list_empty(&pfree_xmitbuf_queue->queue))
752 phead = &pfree_xmitbuf_queue->queue;
754 pxmitbuf = LIST_CONTAINOR(plist, struct xmit_buf, list);
755 list_del_init(&(pxmitbuf->list));
757 if (pxmitbuf != NULL)
758 pxmitpriv->free_xmitbuf_cnt--;
759 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
763 int r8712_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
766 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
768 if (pxmitbuf == NULL)
770 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
771 list_del_init(&pxmitbuf->list);
772 list_add_tail(&(pxmitbuf->list), &pfree_xmitbuf_queue->queue);
773 pxmitpriv->free_xmitbuf_cnt++;
774 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
781 2. RXENTRY (rx_thread or RX_ISR/RX_CallBack)
783 If we turn on USE_RXTHREAD, then, no need for critical section.
784 Otherwise, we must use _enter/_exit critical to protect free_xmit_queue...
786 Must be very very cautious...
790 struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv)
793 Please remember to use all the osdep_service api,
794 and lock/unlock or _enter/_exit critical to protect
798 struct xmit_frame *pxframe = NULL;
799 struct list_head *plist, *phead;
800 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
802 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
803 if (list_empty(&pfree_xmit_queue->queue))
806 phead = &pfree_xmit_queue->queue;
808 pxframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
809 list_del_init(&(pxframe->list));
811 if (pxframe != NULL) {
812 pxmitpriv->free_xmitframe_cnt--;
813 pxframe->buf_addr = NULL;
814 pxframe->pxmitbuf = NULL;
815 pxframe->attrib.psta = NULL;
818 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
822 void r8712_free_xmitframe(struct xmit_priv *pxmitpriv,
823 struct xmit_frame *pxmitframe)
826 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
827 struct _adapter *padapter = pxmitpriv->adapter;
828 struct sk_buff *pndis_pkt = NULL;
830 if (pxmitframe == NULL)
832 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
833 list_del_init(&pxmitframe->list);
834 if (pxmitframe->pkt) {
835 pndis_pkt = pxmitframe->pkt;
836 pxmitframe->pkt = NULL;
838 list_add_tail(&pxmitframe->list, &pfree_xmit_queue->queue);
839 pxmitpriv->free_xmitframe_cnt++;
840 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
841 if (netif_queue_stopped(padapter->pnetdev))
842 netif_wake_queue(padapter->pnetdev);
845 void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv,
846 struct xmit_frame *pxmitframe)
848 if (pxmitframe == NULL)
850 if (pxmitframe->frame_tag == DATA_FRAMETAG)
851 r8712_free_xmitframe(pxmitpriv, pxmitframe);
854 void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv,
855 struct __queue *pframequeue)
858 struct list_head *plist, *phead;
859 struct xmit_frame *pxmitframe;
861 spin_lock_irqsave(&(pframequeue->lock), irqL);
862 phead = &pframequeue->queue;
864 while (end_of_queue_search(phead, plist) == false) {
865 pxmitframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
867 r8712_free_xmitframe(pxmitpriv, pxmitframe);
869 spin_unlock_irqrestore(&(pframequeue->lock), irqL);
872 static inline struct tx_servq *get_sta_pending(struct _adapter *padapter,
873 struct __queue **ppstapending,
874 struct sta_info *psta, sint up)
877 struct tx_servq *ptxservq;
878 struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
883 ptxservq = &(psta->sta_xmitpriv.bk_q);
884 *ppstapending = &padapter->xmitpriv.bk_pending;
885 (phwxmits+3)->accnt++;
889 ptxservq = &(psta->sta_xmitpriv.vi_q);
890 *ppstapending = &padapter->xmitpriv.vi_pending;
891 (phwxmits+1)->accnt++;
895 ptxservq = &(psta->sta_xmitpriv.vo_q);
896 *ppstapending = &padapter->xmitpriv.vo_pending;
897 (phwxmits+0)->accnt++;
902 ptxservq = &(psta->sta_xmitpriv.be_q);
903 *ppstapending = &padapter->xmitpriv.be_pending;
904 (phwxmits + 2)->accnt++;
911 * Will enqueue pxmitframe to the proper queue, and indicate it
912 * to xx_pending list.....
914 sint r8712_xmit_classifier(struct _adapter *padapter,
915 struct xmit_frame *pxmitframe)
918 struct __queue *pstapending;
919 struct sta_info *psta;
920 struct tx_servq *ptxservq;
921 struct pkt_attrib *pattrib = &pxmitframe->attrib;
922 struct sta_priv *pstapriv = &padapter->stapriv;
923 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
924 sint bmcst = IS_MCAST(pattrib->ra);
927 psta = pattrib->psta;
930 psta = r8712_get_bcmc_stainfo(padapter);
932 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
933 psta = r8712_get_stainfo(pstapriv,
934 get_bssid(pmlmepriv));
936 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
941 ptxservq = get_sta_pending(padapter, &pstapending,
942 psta, pattrib->priority);
943 spin_lock_irqsave(&pstapending->lock, irqL0);
944 if (list_empty(&ptxservq->tx_pending))
945 list_add_tail(&ptxservq->tx_pending, &pstapending->queue);
946 list_add_tail(&pxmitframe->list, &ptxservq->sta_pending.queue);
948 spin_unlock_irqrestore(&pstapending->lock, irqL0);
952 static void alloc_hwxmits(struct _adapter *padapter)
954 struct hw_xmit *hwxmits;
955 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
957 pxmitpriv->hwxmit_entry = HWXMIT_ENTRY;
958 pxmitpriv->hwxmits = kmalloc_array(pxmitpriv->hwxmit_entry,
959 sizeof(struct hw_xmit), GFP_ATOMIC);
960 if (pxmitpriv->hwxmits == NULL)
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;
995 static void free_hwxmits(struct _adapter *padapter)
997 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
999 kfree(pxmitpriv->hwxmits);
1002 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry)
1006 for (i = 0; i < entry; i++, phwxmit++) {
1007 spin_lock_init(&phwxmit->xmit_lock);
1008 INIT_LIST_HEAD(&phwxmit->pending);
1009 phwxmit->txcmdcnt = 0;
1014 void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
1015 struct xmit_buf *pxmitbuf)
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;
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.
1034 int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe)
1038 struct xmit_buf *pxmitbuf = NULL;
1039 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1040 struct pkt_attrib *pattrib = &pxmitframe->attrib;
1042 r8712_do_queue_select(padapter, pattrib);
1043 spin_lock_irqsave(&pxmitpriv->lock, irqL);
1044 if (r8712_txframes_sta_ac_pending(padapter, pattrib) > 0) {
1046 r8712_xmit_enqueue(padapter, pxmitframe);
1047 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1050 pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv);
1051 if (pxmitbuf == NULL) { /*enqueue packet*/
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);
1058 xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
1059 r8712_xmit_direct(padapter, pxmitframe);