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)
187 struct pkt_file pktfile;
188 struct sta_info *psta = NULL;
189 struct ethhdr etherhdr;
191 struct tx_cmd txdesc;
194 struct sta_priv *pstapriv = &padapter->stapriv;
195 struct security_priv *psecuritypriv = &padapter->securitypriv;
196 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
197 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
199 _r8712_open_pktfile(pkt, &pktfile);
201 _r8712_pktfile_read(&pktfile, (unsigned char *)ðerhdr, ETH_HLEN);
203 pattrib->ether_type = ntohs(etherhdr.h_proto);
206 /*If driver xmit ARP packet, driver can set ps mode to initial
207 * setting. It stands for getting DHCP or fix IP.*/
208 if (pattrib->ether_type == 0x0806) {
209 if (padapter->pwrctrlpriv.pwr_mode !=
210 padapter->registrypriv.power_mgnt) {
211 del_timer_sync(&pmlmepriv->dhcp_timer);
212 r8712_set_ps_mode(padapter, padapter->registrypriv.
213 power_mgnt, padapter->registrypriv.smart_ps);
217 memcpy(pattrib->dst, ðerhdr.h_dest, ETH_ALEN);
218 memcpy(pattrib->src, ðerhdr.h_source, ETH_ALEN);
220 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
221 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
222 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
223 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
224 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
225 memcpy(pattrib->ra, get_bssid(pmlmepriv), ETH_ALEN);
226 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
227 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
228 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
229 memcpy(pattrib->ta, get_bssid(pmlmepriv), ETH_ALEN);
230 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
231 /*firstly, filter packet not belongs to mp*/
232 if (pattrib->ether_type != 0x8712)
234 /* for mp storing the txcmd per packet,
235 * according to the info of txcmd to update pattrib */
236 /*get MP_TXDESC_SIZE bytes txcmd per packet*/
237 _r8712_pktfile_read(&pktfile, (u8 *)&txdesc, TXDESC_SIZE);
238 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
239 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
242 /* r8712_xmitframe_coalesce() overwrite this!*/
243 pattrib->pktlen = pktfile.pkt_len;
244 if (ETH_P_IP == pattrib->ether_type) {
245 /* The following is for DHCP and ARP packet, we use cck1M to
246 * tx these packets and let LPS awake some time
247 * to prevent DHCP protocol fail */
250 _r8712_pktfile_read(&pktfile, &tmp[0], 24);
251 pattrib->dhcp_pkt = 0;
252 if (pktfile.pkt_len > 282) {/*MINIMUM_DHCP_PACKET_SIZE)*/
253 if (ETH_P_IP == pattrib->ether_type) {/* IP header*/
254 if (((tmp[21] == 68) && (tmp[23] == 67)) ||
255 ((tmp[21] == 67) && (tmp[23] == 68))) {
256 /* 68 : UDP BOOTP client
257 * 67 : UDP BOOTP server
258 * Use low rate to send DHCP packet.*/
259 pattrib->dhcp_pkt = 1;
264 bmcast = IS_MCAST(pattrib->ra);
267 psta = r8712_get_bcmc_stainfo(padapter);
270 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
271 psta = r8712_get_stainfo(pstapriv,
272 get_bssid(pmlmepriv));
275 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
276 if (psta == NULL) /* drop the pkt */
278 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE))
281 pattrib->mac_id = psta->mac_id;
286 pattrib->psta = psta;
288 /* if we cannot get psta => drrp the pkt */
292 pattrib->ack_policy = 0;
293 /* get ether_hdr_len */
294 pattrib->pkt_hdrlen = ETH_HLEN;
296 if (pqospriv->qos_option)
297 r8712_set_qos(&pktfile, pattrib);
299 pattrib->hdrlen = WLAN_HDR_A3_LEN;
300 pattrib->subtype = WIFI_DATA_TYPE;
301 pattrib->priority = 0;
303 if (psta->ieee8021x_blocked == true) {
304 pattrib->encrypt = 0;
305 if ((pattrib->ether_type != 0x888e) &&
306 (check_fwstate(pmlmepriv, WIFI_MP_STATE) == false))
309 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast);
310 switch (pattrib->encrypt) {
314 pattrib->icv_len = 4;
318 pattrib->icv_len = 4;
319 if (padapter->securitypriv.busetkipkey == _FAIL)
324 pattrib->icv_len = 8;
328 pattrib->icv_len = 0;
332 if (pattrib->encrypt &&
333 ((padapter->securitypriv.sw_encrypt == true) ||
334 (psecuritypriv->hw_decrypted == false)))
335 pattrib->bswenc = true;
337 pattrib->bswenc = false;
338 /* if in MP_STATE, update pkt_attrib from mp_txcmd, and overwrite
339 * some settings above.*/
340 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
341 pattrib->priority = (txdesc.txdw1 >> QSEL_SHT) & 0x1f;
345 static sint xmitframe_addmic(struct _adapter *padapter,
346 struct xmit_frame *pxmitframe)
348 u32 curfragnum, length;
349 u8 *pframe, *payload, mic[8];
350 struct mic_data micdata;
351 struct sta_info *stainfo;
352 struct qos_priv *pqospriv = &(padapter->mlmepriv.qospriv);
353 struct pkt_attrib *pattrib = &pxmitframe->attrib;
354 struct security_priv *psecuritypriv = &padapter->securitypriv;
355 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
356 u8 priority[4] = {0x0, 0x0, 0x0, 0x0};
357 sint bmcst = IS_MCAST(pattrib->ra);
360 stainfo = pattrib->psta;
362 stainfo = r8712_get_stainfo(&padapter->stapriv,
364 if (pattrib->encrypt == _TKIP_) {
366 if (stainfo != NULL) {
367 u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
368 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
370 pframe = pxmitframe->buf_addr + TXDESC_OFFSET;
372 if (!memcmp(psecuritypriv->XGrptxmickey
373 [psecuritypriv->XGrpKeyid].skey,
376 /*start to calculate the mic code*/
377 r8712_secmicsetkey(&micdata,
379 XGrptxmickey[psecuritypriv->
382 if (!memcmp(&stainfo->tkiptxmickey.skey[0],
385 /* start to calculate the mic code */
386 r8712_secmicsetkey(&micdata,
387 &stainfo->tkiptxmickey.skey[0]);
389 if (pframe[1] & 1) { /* ToDS==1 */
390 r8712_secmicappend(&micdata,
391 &pframe[16], 6); /*DA*/
392 if (pframe[1]&2) /* From Ds==1 */
393 r8712_secmicappend(&micdata,
396 r8712_secmicappend(&micdata,
398 } else { /* ToDS==0 */
399 r8712_secmicappend(&micdata,
400 &pframe[4], 6); /* DA */
401 if (pframe[1]&2) /* From Ds==1 */
402 r8712_secmicappend(&micdata,
405 r8712_secmicappend(&micdata,
408 if (pqospriv->qos_option == 1)
409 priority[0] = (u8)pxmitframe->
411 r8712_secmicappend(&micdata, &priority[0], 4);
413 for (curfragnum = 0; curfragnum < pattrib->nr_frags;
415 payload = (u8 *)RND4((addr_t)(payload));
416 payload = payload+pattrib->
417 hdrlen+pattrib->iv_len;
418 if ((curfragnum + 1) == pattrib->nr_frags) {
419 length = pattrib->last_txcmdsz -
422 ((psecuritypriv->sw_encrypt)
423 ? pattrib->icv_len : 0);
424 r8712_secmicappend(&micdata, payload,
426 payload = payload+length;
428 length = pxmitpriv->frag_len -
429 pattrib->hdrlen-pattrib->iv_len -
430 ((psecuritypriv->sw_encrypt) ?
431 pattrib->icv_len : 0);
432 r8712_secmicappend(&micdata, payload,
434 payload = payload + length +
438 r8712_secgetmic(&micdata, &(mic[0]));
439 /* add mic code and add the mic code length in
441 memcpy(payload, &(mic[0]), 8);
442 pattrib->last_txcmdsz += 8;
443 payload = payload-pattrib->last_txcmdsz + 8;
449 static sint xmitframe_swencrypt(struct _adapter *padapter,
450 struct xmit_frame *pxmitframe)
452 struct pkt_attrib *pattrib = &pxmitframe->attrib;
454 if (pattrib->bswenc) {
455 switch (pattrib->encrypt) {
458 r8712_wep_encrypt(padapter, (u8 *)pxmitframe);
461 r8712_tkip_encrypt(padapter, (u8 *)pxmitframe);
464 r8712_aes_encrypt(padapter, (u8 *)pxmitframe);
473 static sint make_wlanhdr(struct _adapter *padapter, u8 *hdr,
474 struct pkt_attrib *pattrib)
478 struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr;
479 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
480 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
481 u16 *fctrl = &pwlanhdr->frame_ctl;
483 memset(hdr, 0, WLANHDR_OFFSET);
484 SetFrameSubType(fctrl, pattrib->subtype);
485 if (pattrib->subtype & WIFI_DATA_TYPE) {
486 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) {
487 /* to_ds = 1, fr_ds = 0; */
489 memcpy(pwlanhdr->addr1, get_bssid(pmlmepriv),
491 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
492 memcpy(pwlanhdr->addr3, pattrib->dst, ETH_ALEN);
493 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
494 /* to_ds = 0, fr_ds = 1; */
496 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
497 memcpy(pwlanhdr->addr2, get_bssid(pmlmepriv),
499 memcpy(pwlanhdr->addr3, pattrib->src, ETH_ALEN);
500 } else if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true)
501 || (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)
503 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
504 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
505 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
507 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
508 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
509 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
510 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
515 if (pattrib->encrypt)
517 if (pqospriv->qos_option) {
518 qc = (unsigned short *)(hdr + pattrib->hdrlen - 2);
519 if (pattrib->priority)
520 SetPriority(qc, pattrib->priority);
521 SetAckpolicy(qc, pattrib->ack_policy);
523 /* TODO: fill HT Control Field */
524 /* Update Seq Num will be handled by f/w */
526 struct sta_info *psta;
527 sint bmcst = IS_MCAST(pattrib->ra);
530 psta = pattrib->psta;
533 psta = r8712_get_bcmc_stainfo(padapter);
536 r8712_get_stainfo(&padapter->stapriv,
540 psta->sta_xmitpriv.txseq_tid
541 [pattrib->priority]++;
542 psta->sta_xmitpriv.txseq_tid[pattrib->priority]
544 pattrib->seqnum = psta->sta_xmitpriv.
545 txseq_tid[pattrib->priority];
546 SetSeqNum(hdr, pattrib->seqnum);
553 static sint r8712_put_snap(u8 *data, u16 h_proto)
555 struct ieee80211_snap_hdr *snap;
558 snap = (struct ieee80211_snap_hdr *)data;
562 if (h_proto == 0x8137 || h_proto == 0x80f3)
566 snap->oui[0] = oui[0];
567 snap->oui[1] = oui[1];
568 snap->oui[2] = oui[2];
569 *(u16 *)(data + SNAP_SIZE) = htons(h_proto);
570 return SNAP_SIZE + sizeof(u16);
574 * This sub-routine will perform all the following:
575 * 1. remove 802.3 header.
576 * 2. create wlan_header, based on the info in pxmitframe
577 * 3. append sta's iv/ext-iv
579 * 5. move frag chunk from pframe to pxmitframe->mem
580 * 6. apply sw-encrypt, if necessary.
582 sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt,
583 struct xmit_frame *pxmitframe)
585 struct pkt_file pktfile;
587 sint frg_len, mpdu_len, llc_sz;
591 u8 *pframe, *mem_start, *ptxdesc;
592 struct sta_info *psta;
593 struct security_priv *psecuritypriv = &padapter->securitypriv;
594 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
595 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
596 struct pkt_attrib *pattrib = &pxmitframe->attrib;
598 sint bmcst = IS_MCAST(pattrib->ra);
600 if (pattrib->psta == NULL)
602 psta = pattrib->psta;
603 if (pxmitframe->buf_addr == NULL)
605 pbuf_start = pxmitframe->buf_addr;
606 ptxdesc = pbuf_start;
607 mem_start = pbuf_start + TXDESC_OFFSET;
608 if (make_wlanhdr(padapter, mem_start, pattrib) == _FAIL)
610 _r8712_open_pktfile(pkt, &pktfile);
611 _r8712_pktfile_read(&pktfile, NULL, (uint) pattrib->pkt_hdrlen);
612 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
613 /* truncate TXDESC_SIZE bytes txcmd if at mp mode for 871x */
614 if (pattrib->ether_type == 0x8712) {
615 /* take care - update_txdesc overwrite this */
616 _r8712_pktfile_read(&pktfile, ptxdesc, TXDESC_SIZE);
619 pattrib->pktlen = pktfile.pkt_len;
621 frg_len = pxmitpriv->frag_len - 4;
627 pframe += pattrib->hdrlen;
628 mpdu_len -= pattrib->hdrlen;
629 /* adding icv, if necessary...*/
630 if (pattrib->iv_len) {
632 switch (pattrib->encrypt) {
635 WEP_IV(pattrib->iv, psta->txpn,
646 TKIP_IV(pattrib->iv, psta->txpn,
651 AES_IV(pattrib->iv, psta->txpn,
655 AES_IV(pattrib->iv, psta->txpn,
660 memcpy(pframe, pattrib->iv, pattrib->iv_len);
661 pframe += pattrib->iv_len;
662 mpdu_len -= pattrib->iv_len;
665 llc_sz = r8712_put_snap(pframe, pattrib->ether_type);
669 if ((pattrib->icv_len > 0) && (pattrib->bswenc))
670 mpdu_len -= pattrib->icv_len;
672 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
675 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
678 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) {
679 memcpy(pframe, pattrib->icv, pattrib->icv_len);
680 pframe += pattrib->icv_len;
683 if (bmcst || (r8712_endofpktfile(&pktfile) == true)) {
684 pattrib->nr_frags = frg_inx;
685 pattrib->last_txcmdsz = pattrib->hdrlen +
687 ((pattrib->nr_frags == 1) ?
690 pattrib->icv_len : 0) + mem_sz;
691 ClearMFrag(mem_start);
694 addr = (addr_t)(pframe);
695 mem_start = (unsigned char *)RND4(addr) + TXDESC_OFFSET;
696 memcpy(mem_start, pbuf_start + TXDESC_OFFSET, pattrib->hdrlen);
699 if (xmitframe_addmic(padapter, pxmitframe) == _FAIL)
701 xmitframe_swencrypt(padapter, pxmitframe);
705 void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len)
710 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
711 struct registry_priv *pregistrypriv = &padapter->registrypriv;
713 switch (pxmitpriv->vcs_setting) {
715 pxmitpriv->vcs = NONE_VCS;
721 perp = r8712_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len);
723 pxmitpriv->vcs = NONE_VCS;
725 protection = (*(perp + 2)) & BIT(1);
727 if (pregistrypriv->vcs_type == RTS_CTS)
728 pxmitpriv->vcs = RTS_CTS;
730 pxmitpriv->vcs = CTS_TO_SELF;
732 pxmitpriv->vcs = NONE_VCS;
738 struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv)
741 struct xmit_buf *pxmitbuf = NULL;
742 struct list_head *plist, *phead;
743 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
745 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
746 if (list_empty(&pfree_xmitbuf_queue->queue))
749 phead = &pfree_xmitbuf_queue->queue;
751 pxmitbuf = LIST_CONTAINOR(plist, struct xmit_buf, list);
752 list_del_init(&(pxmitbuf->list));
754 if (pxmitbuf != NULL)
755 pxmitpriv->free_xmitbuf_cnt--;
756 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
760 int r8712_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
763 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
765 if (pxmitbuf == NULL)
767 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
768 list_del_init(&pxmitbuf->list);
769 list_add_tail(&(pxmitbuf->list), &pfree_xmitbuf_queue->queue);
770 pxmitpriv->free_xmitbuf_cnt++;
771 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
778 2. RXENTRY (rx_thread or RX_ISR/RX_CallBack)
780 If we turn on USE_RXTHREAD, then, no need for critical section.
781 Otherwise, we must use _enter/_exit critical to protect free_xmit_queue...
783 Must be very very cautious...
787 struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv)
790 Please remember to use all the osdep_service api,
791 and lock/unlock or _enter/_exit critical to protect
795 struct xmit_frame *pxframe = NULL;
796 struct list_head *plist, *phead;
797 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
799 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
800 if (list_empty(&pfree_xmit_queue->queue))
803 phead = &pfree_xmit_queue->queue;
805 pxframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
806 list_del_init(&(pxframe->list));
808 if (pxframe != NULL) {
809 pxmitpriv->free_xmitframe_cnt--;
810 pxframe->buf_addr = NULL;
811 pxframe->pxmitbuf = NULL;
812 pxframe->attrib.psta = NULL;
815 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
819 void r8712_free_xmitframe(struct xmit_priv *pxmitpriv,
820 struct xmit_frame *pxmitframe)
823 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
824 struct _adapter *padapter = pxmitpriv->adapter;
826 if (pxmitframe == NULL)
828 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
829 list_del_init(&pxmitframe->list);
831 pxmitframe->pkt = NULL;
832 list_add_tail(&pxmitframe->list, &pfree_xmit_queue->queue);
833 pxmitpriv->free_xmitframe_cnt++;
834 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
835 if (netif_queue_stopped(padapter->pnetdev))
836 netif_wake_queue(padapter->pnetdev);
839 void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv,
840 struct xmit_frame *pxmitframe)
842 if (pxmitframe == NULL)
844 if (pxmitframe->frame_tag == DATA_FRAMETAG)
845 r8712_free_xmitframe(pxmitpriv, pxmitframe);
848 void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv,
849 struct __queue *pframequeue)
852 struct list_head *plist, *phead;
853 struct xmit_frame *pxmitframe;
855 spin_lock_irqsave(&(pframequeue->lock), irqL);
856 phead = &pframequeue->queue;
858 while (end_of_queue_search(phead, plist) == false) {
859 pxmitframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
861 r8712_free_xmitframe(pxmitpriv, pxmitframe);
863 spin_unlock_irqrestore(&(pframequeue->lock), irqL);
866 static inline struct tx_servq *get_sta_pending(struct _adapter *padapter,
867 struct __queue **ppstapending,
868 struct sta_info *psta, sint up)
871 struct tx_servq *ptxservq;
872 struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
877 ptxservq = &(psta->sta_xmitpriv.bk_q);
878 *ppstapending = &padapter->xmitpriv.bk_pending;
879 (phwxmits+3)->accnt++;
883 ptxservq = &(psta->sta_xmitpriv.vi_q);
884 *ppstapending = &padapter->xmitpriv.vi_pending;
885 (phwxmits+1)->accnt++;
889 ptxservq = &(psta->sta_xmitpriv.vo_q);
890 *ppstapending = &padapter->xmitpriv.vo_pending;
891 (phwxmits+0)->accnt++;
896 ptxservq = &(psta->sta_xmitpriv.be_q);
897 *ppstapending = &padapter->xmitpriv.be_pending;
898 (phwxmits + 2)->accnt++;
905 * Will enqueue pxmitframe to the proper queue, and indicate it
906 * to xx_pending list.....
908 sint r8712_xmit_classifier(struct _adapter *padapter,
909 struct xmit_frame *pxmitframe)
912 struct __queue *pstapending;
913 struct sta_info *psta;
914 struct tx_servq *ptxservq;
915 struct pkt_attrib *pattrib = &pxmitframe->attrib;
916 struct sta_priv *pstapriv = &padapter->stapriv;
917 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
918 sint bmcst = IS_MCAST(pattrib->ra);
921 psta = pattrib->psta;
924 psta = r8712_get_bcmc_stainfo(padapter);
926 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
927 psta = r8712_get_stainfo(pstapriv,
928 get_bssid(pmlmepriv));
930 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
935 ptxservq = get_sta_pending(padapter, &pstapending,
936 psta, pattrib->priority);
937 spin_lock_irqsave(&pstapending->lock, irqL0);
938 if (list_empty(&ptxservq->tx_pending))
939 list_add_tail(&ptxservq->tx_pending, &pstapending->queue);
940 list_add_tail(&pxmitframe->list, &ptxservq->sta_pending.queue);
942 spin_unlock_irqrestore(&pstapending->lock, irqL0);
946 static void alloc_hwxmits(struct _adapter *padapter)
948 struct hw_xmit *hwxmits;
949 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
951 pxmitpriv->hwxmit_entry = HWXMIT_ENTRY;
952 pxmitpriv->hwxmits = kmalloc_array(pxmitpriv->hwxmit_entry,
953 sizeof(struct hw_xmit), GFP_ATOMIC);
954 if (pxmitpriv->hwxmits == NULL)
956 hwxmits = pxmitpriv->hwxmits;
957 if (pxmitpriv->hwxmit_entry == 5) {
958 pxmitpriv->bmc_txqueue.head = 0;
959 hwxmits[0] .phwtxqueue = &pxmitpriv->bmc_txqueue;
960 hwxmits[0] .sta_queue = &pxmitpriv->bm_pending;
961 pxmitpriv->vo_txqueue.head = 0;
962 hwxmits[1] .phwtxqueue = &pxmitpriv->vo_txqueue;
963 hwxmits[1] .sta_queue = &pxmitpriv->vo_pending;
964 pxmitpriv->vi_txqueue.head = 0;
965 hwxmits[2] .phwtxqueue = &pxmitpriv->vi_txqueue;
966 hwxmits[2] .sta_queue = &pxmitpriv->vi_pending;
967 pxmitpriv->bk_txqueue.head = 0;
968 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
969 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
970 pxmitpriv->be_txqueue.head = 0;
971 hwxmits[4] .phwtxqueue = &pxmitpriv->be_txqueue;
972 hwxmits[4] .sta_queue = &pxmitpriv->be_pending;
973 } else if (pxmitpriv->hwxmit_entry == 4) {
974 pxmitpriv->vo_txqueue.head = 0;
975 hwxmits[0] .phwtxqueue = &pxmitpriv->vo_txqueue;
976 hwxmits[0] .sta_queue = &pxmitpriv->vo_pending;
977 pxmitpriv->vi_txqueue.head = 0;
978 hwxmits[1] .phwtxqueue = &pxmitpriv->vi_txqueue;
979 hwxmits[1] .sta_queue = &pxmitpriv->vi_pending;
980 pxmitpriv->be_txqueue.head = 0;
981 hwxmits[2] .phwtxqueue = &pxmitpriv->be_txqueue;
982 hwxmits[2] .sta_queue = &pxmitpriv->be_pending;
983 pxmitpriv->bk_txqueue.head = 0;
984 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
985 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
989 static void free_hwxmits(struct _adapter *padapter)
991 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
993 kfree(pxmitpriv->hwxmits);
996 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry)
1000 for (i = 0; i < entry; i++, phwxmit++) {
1001 spin_lock_init(&phwxmit->xmit_lock);
1002 INIT_LIST_HEAD(&phwxmit->pending);
1003 phwxmit->txcmdcnt = 0;
1008 void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
1009 struct xmit_buf *pxmitbuf)
1011 /* pxmitbuf attach to pxmitframe */
1012 pxmitframe->pxmitbuf = pxmitbuf;
1013 /* urb and irp connection */
1014 pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
1015 /* buffer addr assoc */
1016 pxmitframe->buf_addr = pxmitbuf->pbuf;
1017 /* pxmitframe attach to pxmitbuf */
1018 pxmitbuf->priv_data = pxmitframe;
1022 * tx_action == 0 == no frames to transmit
1023 * tx_action > 0 ==> we have frames to transmit
1024 * tx_action < 0 ==> we have frames to transmit, but TXFF is not even enough
1025 * to transmit 1 frame.
1028 int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe)
1032 struct xmit_buf *pxmitbuf = NULL;
1033 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1034 struct pkt_attrib *pattrib = &pxmitframe->attrib;
1036 r8712_do_queue_select(padapter, pattrib);
1037 spin_lock_irqsave(&pxmitpriv->lock, irqL);
1038 if (r8712_txframes_sta_ac_pending(padapter, pattrib) > 0) {
1040 r8712_xmit_enqueue(padapter, pxmitframe);
1041 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1044 pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv);
1045 if (pxmitbuf == NULL) { /*enqueue packet*/
1047 r8712_xmit_enqueue(padapter, pxmitframe);
1048 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1049 } else { /*dump packet directly*/
1050 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1052 xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
1053 r8712_xmit_direct(padapter, pxmitframe);