1 // SPDX-License-Identifier: GPL-2.0
2 /******************************************************************************
5 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
6 * Linux device driver for RTL8192SU
8 * Modifications for inclusion into the Linux staging tree are
9 * Copyright(c) 2010 Larry Finger. All rights reserved.
11 * Contact information:
12 * WLAN FAE <wlanfae@realtek.com>
13 * Larry Finger <Larry.Finger@lwfinger.net>
15 ******************************************************************************/
17 #define _RTL871X_XMIT_C_
19 #include "osdep_service.h"
20 #include "drv_types.h"
22 #include "osdep_intf.h"
26 static const u8 P802_1H_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0xf8};
27 static const u8 RFC1042_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0x00};
28 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry);
29 static void alloc_hwxmits(struct _adapter *padapter);
30 static void free_hwxmits(struct _adapter *padapter);
32 static void _init_txservq(struct tx_servq *ptxservq)
34 INIT_LIST_HEAD(&ptxservq->tx_pending);
35 _init_queue(&ptxservq->sta_pending);
39 void _r8712_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv)
41 memset((unsigned char *)psta_xmitpriv, 0,
42 sizeof(struct sta_xmit_priv));
43 spin_lock_init(&psta_xmitpriv->lock);
44 _init_txservq(&psta_xmitpriv->be_q);
45 _init_txservq(&psta_xmitpriv->bk_q);
46 _init_txservq(&psta_xmitpriv->vi_q);
47 _init_txservq(&psta_xmitpriv->vo_q);
48 INIT_LIST_HEAD(&psta_xmitpriv->legacy_dz);
49 INIT_LIST_HEAD(&psta_xmitpriv->apsd);
52 sint _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv,
53 struct _adapter *padapter)
56 struct xmit_buf *pxmitbuf;
57 struct xmit_frame *pxframe;
59 memset((unsigned char *)pxmitpriv, 0, sizeof(struct xmit_priv));
60 spin_lock_init(&pxmitpriv->lock);
62 *Please insert all the queue initialization using _init_queue below
64 pxmitpriv->adapter = padapter;
65 _init_queue(&pxmitpriv->be_pending);
66 _init_queue(&pxmitpriv->bk_pending);
67 _init_queue(&pxmitpriv->vi_pending);
68 _init_queue(&pxmitpriv->vo_pending);
69 _init_queue(&pxmitpriv->bm_pending);
70 _init_queue(&pxmitpriv->legacy_dz_queue);
71 _init_queue(&pxmitpriv->apsd_queue);
72 _init_queue(&pxmitpriv->free_xmit_queue);
74 * Please allocate memory with the sz = (struct xmit_frame) * NR_XMITFRAME,
75 * and initialize free_xmit_frame below.
76 * Please also apply free_txobj to link_up all the xmit_frames...
78 pxmitpriv->pallocated_frame_buf =
79 kmalloc(NR_XMITFRAME * sizeof(struct xmit_frame) + 4, GFP_ATOMIC);
80 if (!pxmitpriv->pallocated_frame_buf) {
81 pxmitpriv->pxmit_frame_buf = NULL;
84 pxmitpriv->pxmit_frame_buf = pxmitpriv->pallocated_frame_buf + 4 -
85 ((addr_t) (pxmitpriv->pallocated_frame_buf) & 3);
86 pxframe = (struct xmit_frame *) pxmitpriv->pxmit_frame_buf;
87 for (i = 0; i < NR_XMITFRAME; i++) {
88 INIT_LIST_HEAD(&(pxframe->list));
89 pxframe->padapter = padapter;
90 pxframe->frame_tag = DATA_FRAMETAG;
92 pxframe->buf_addr = NULL;
93 pxframe->pxmitbuf = NULL;
94 list_add_tail(&(pxframe->list),
95 &(pxmitpriv->free_xmit_queue.queue));
98 pxmitpriv->free_xmitframe_cnt = NR_XMITFRAME;
100 * init xmit hw_txqueue
102 _r8712_init_hw_txqueue(&pxmitpriv->be_txqueue, BE_QUEUE_INX);
103 _r8712_init_hw_txqueue(&pxmitpriv->bk_txqueue, BK_QUEUE_INX);
104 _r8712_init_hw_txqueue(&pxmitpriv->vi_txqueue, VI_QUEUE_INX);
105 _r8712_init_hw_txqueue(&pxmitpriv->vo_txqueue, VO_QUEUE_INX);
106 _r8712_init_hw_txqueue(&pxmitpriv->bmc_txqueue, BMC_QUEUE_INX);
107 pxmitpriv->frag_len = MAX_FRAG_THRESHOLD;
108 pxmitpriv->txirp_cnt = 1;
109 /*per AC pending irp*/
110 pxmitpriv->beq_cnt = 0;
111 pxmitpriv->bkq_cnt = 0;
112 pxmitpriv->viq_cnt = 0;
113 pxmitpriv->voq_cnt = 0;
115 _init_queue(&pxmitpriv->free_xmitbuf_queue);
116 _init_queue(&pxmitpriv->pending_xmitbuf_queue);
117 pxmitpriv->pallocated_xmitbuf =
118 kmalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4, GFP_ATOMIC);
119 if (!pxmitpriv->pallocated_xmitbuf) {
120 kfree(pxmitpriv->pallocated_frame_buf);
121 pxmitpriv->pallocated_frame_buf = NULL;
124 pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 -
125 ((addr_t)(pxmitpriv->pallocated_xmitbuf) & 3);
126 pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
127 for (i = 0; i < NR_XMITBUFF; i++) {
128 INIT_LIST_HEAD(&pxmitbuf->list);
129 pxmitbuf->pallocated_buf = kmalloc(MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ,
131 if (!pxmitbuf->pallocated_buf)
133 pxmitbuf->pbuf = pxmitbuf->pallocated_buf + XMITBUF_ALIGN_SZ -
134 ((addr_t) (pxmitbuf->pallocated_buf) &
135 (XMITBUF_ALIGN_SZ - 1));
136 r8712_xmit_resource_alloc(padapter, pxmitbuf);
137 list_add_tail(&pxmitbuf->list,
138 &(pxmitpriv->free_xmitbuf_queue.queue));
141 pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF;
142 INIT_WORK(&padapter->wkFilterRxFF0, r8712_SetFilter);
143 alloc_hwxmits(padapter);
144 init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
145 tasklet_init(&pxmitpriv->xmit_tasklet,
146 (void(*)(unsigned long))r8712_xmit_bh,
147 (unsigned long)padapter);
151 void _free_xmit_priv(struct xmit_priv *pxmitpriv)
154 struct _adapter *padapter = pxmitpriv->adapter;
155 struct xmit_frame *pxmitframe = (struct xmit_frame *)
156 pxmitpriv->pxmit_frame_buf;
157 struct xmit_buf *pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
159 if (pxmitpriv->pxmit_frame_buf == NULL)
161 for (i = 0; i < NR_XMITFRAME; i++) {
162 r8712_xmit_complete(padapter, pxmitframe);
165 for (i = 0; i < NR_XMITBUFF; i++) {
166 r8712_xmit_resource_free(padapter, pxmitbuf);
167 kfree(pxmitbuf->pallocated_buf);
170 kfree(pxmitpriv->pallocated_frame_buf);
171 kfree(pxmitpriv->pallocated_xmitbuf);
172 free_hwxmits(padapter);
175 sint r8712_update_attrib(struct _adapter *padapter, _pkt *pkt,
176 struct pkt_attrib *pattrib)
178 struct pkt_file pktfile;
179 struct sta_info *psta = NULL;
180 struct ethhdr etherhdr;
182 struct tx_cmd txdesc;
185 struct sta_priv *pstapriv = &padapter->stapriv;
186 struct security_priv *psecuritypriv = &padapter->securitypriv;
187 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
188 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
190 _r8712_open_pktfile(pkt, &pktfile);
192 _r8712_pktfile_read(&pktfile, (unsigned char *)ðerhdr, ETH_HLEN);
194 pattrib->ether_type = ntohs(etherhdr.h_proto);
197 * If driver xmit ARP packet, driver can set ps mode to initial
198 * setting. It stands for getting DHCP or fix IP.
200 if (pattrib->ether_type == 0x0806) {
201 if (padapter->pwrctrlpriv.pwr_mode !=
202 padapter->registrypriv.power_mgnt) {
203 del_timer_sync(&pmlmepriv->dhcp_timer);
204 r8712_set_ps_mode(padapter,
205 padapter->registrypriv.power_mgnt,
206 padapter->registrypriv.smart_ps);
210 memcpy(pattrib->dst, ðerhdr.h_dest, ETH_ALEN);
211 memcpy(pattrib->src, ðerhdr.h_source, ETH_ALEN);
213 if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) ||
214 check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) {
215 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
216 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
217 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
218 memcpy(pattrib->ra, get_bssid(pmlmepriv), ETH_ALEN);
219 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
220 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
221 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
222 memcpy(pattrib->ta, get_bssid(pmlmepriv), ETH_ALEN);
223 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
224 /*firstly, filter packet not belongs to mp*/
225 if (pattrib->ether_type != 0x8712)
227 /* for mp storing the txcmd per packet,
228 * according to the info of txcmd to update pattrib
230 /*get MP_TXDESC_SIZE bytes txcmd per packet*/
231 _r8712_pktfile_read(&pktfile, (u8 *)&txdesc, TXDESC_SIZE);
232 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
233 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
236 /* r8712_xmitframe_coalesce() overwrite this!*/
237 pattrib->pktlen = pktfile.pkt_len;
238 if (pattrib->ether_type == ETH_P_IP) {
239 /* The following is for DHCP and ARP packet, we use cck1M to
240 * tx these packets and let LPS awake some time
241 * to prevent DHCP protocol fail
245 _r8712_pktfile_read(&pktfile, &tmp[0], 24);
246 pattrib->dhcp_pkt = 0;
247 if (pktfile.pkt_len > 282) {/*MINIMUM_DHCP_PACKET_SIZE)*/
248 if (pattrib->ether_type == ETH_P_IP) {/* IP header*/
249 if (((tmp[21] == 68) && (tmp[23] == 67)) ||
250 ((tmp[21] == 67) && (tmp[23] == 68))) {
251 /* 68 : UDP BOOTP client
252 * 67 : UDP BOOTP server
253 * Use low rate to send DHCP packet.
255 pattrib->dhcp_pkt = 1;
260 bmcast = IS_MCAST(pattrib->ra);
263 psta = r8712_get_bcmc_stainfo(padapter);
266 if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
267 psta = r8712_get_stainfo(pstapriv,
268 get_bssid(pmlmepriv));
271 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
272 if (psta == NULL) /* drop the pkt */
274 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE))
277 pattrib->mac_id = psta->mac_id;
282 pattrib->psta = psta;
284 /* if we cannot get psta => drrp the pkt */
288 pattrib->ack_policy = 0;
289 /* get ether_hdr_len */
290 pattrib->pkt_hdrlen = ETH_HLEN;
292 if (pqospriv->qos_option) {
293 r8712_set_qos(&pktfile, pattrib);
295 pattrib->hdrlen = WLAN_HDR_A3_LEN;
296 pattrib->subtype = WIFI_DATA_TYPE;
297 pattrib->priority = 0;
299 if (psta->ieee8021x_blocked) {
300 pattrib->encrypt = 0;
301 if ((pattrib->ether_type != 0x888e) &&
302 !check_fwstate(pmlmepriv, WIFI_MP_STATE))
305 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast);
307 switch (pattrib->encrypt) {
311 pattrib->icv_len = 4;
315 pattrib->icv_len = 4;
316 if (padapter->securitypriv.busetkipkey == _FAIL)
321 pattrib->icv_len = 8;
325 pattrib->icv_len = 0;
329 if (pattrib->encrypt &&
330 (padapter->securitypriv.sw_encrypt ||
331 !psecuritypriv->hw_decrypted))
332 pattrib->bswenc = true;
334 pattrib->bswenc = false;
335 /* if in MP_STATE, update pkt_attrib from mp_txcmd, and overwrite
336 * some settings above.
338 if (check_fwstate(pmlmepriv, WIFI_MP_STATE))
340 (le32_to_cpu(txdesc.txdw1) >> QSEL_SHT) & 0x1f;
344 static sint xmitframe_addmic(struct _adapter *padapter,
345 struct xmit_frame *pxmitframe)
347 u32 curfragnum, length;
348 u8 *pframe, *payload, mic[8];
349 struct mic_data micdata;
350 struct sta_info *stainfo;
351 struct qos_priv *pqospriv = &(padapter->mlmepriv.qospriv);
352 struct pkt_attrib *pattrib = &pxmitframe->attrib;
353 struct security_priv *psecuritypriv = &padapter->securitypriv;
354 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
355 u8 priority[4] = {0x0, 0x0, 0x0, 0x0};
356 sint bmcst = IS_MCAST(pattrib->ra);
359 stainfo = pattrib->psta;
361 stainfo = r8712_get_stainfo(&padapter->stapriv,
363 if (pattrib->encrypt == _TKIP_) {
365 if (stainfo != NULL) {
366 u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
367 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
369 pframe = pxmitframe->buf_addr + TXDESC_OFFSET;
371 if (!memcmp(psecuritypriv->XGrptxmickey
372 [psecuritypriv->XGrpKeyid].skey,
375 /*start to calculate the mic code*/
376 r8712_secmicsetkey(&micdata,
378 XGrptxmickey[psecuritypriv->
381 if (!memcmp(&stainfo->tkiptxmickey.skey[0],
384 /* start to calculate the mic code */
385 r8712_secmicsetkey(&micdata,
386 &stainfo->tkiptxmickey.skey[0]);
388 if (pframe[1] & 1) { /* ToDS==1 */
389 r8712_secmicappend(&micdata,
390 &pframe[16], 6); /*DA*/
391 if (pframe[1] & 2) /* From Ds==1 */
392 r8712_secmicappend(&micdata,
395 r8712_secmicappend(&micdata,
397 } else { /* ToDS==0 */
398 r8712_secmicappend(&micdata,
399 &pframe[4], 6); /* DA */
400 if (pframe[1] & 2) /* From Ds==1 */
401 r8712_secmicappend(&micdata,
404 r8712_secmicappend(&micdata,
407 if (pqospriv->qos_option == 1)
408 priority[0] = (u8)pxmitframe->attrib.priority;
409 r8712_secmicappend(&micdata, &priority[0], 4);
411 for (curfragnum = 0; curfragnum < pattrib->nr_frags;
413 payload = (u8 *)RND4((addr_t)(payload));
414 payload += pattrib->hdrlen + pattrib->iv_len;
415 if ((curfragnum + 1) == pattrib->nr_frags) {
416 length = pattrib->last_txcmdsz -
419 ((psecuritypriv->sw_encrypt)
420 ? pattrib->icv_len : 0);
421 r8712_secmicappend(&micdata, payload,
423 payload = payload + length;
425 length = pxmitpriv->frag_len -
426 pattrib->hdrlen - pattrib->iv_len -
427 ((psecuritypriv->sw_encrypt) ?
428 pattrib->icv_len : 0);
429 r8712_secmicappend(&micdata, payload,
431 payload = payload + length +
435 r8712_secgetmic(&micdata, &(mic[0]));
436 /* add mic code and add the mic code length in
439 memcpy(payload, &(mic[0]), 8);
440 pattrib->last_txcmdsz += 8;
441 payload = payload - pattrib->last_txcmdsz + 8;
447 static sint xmitframe_swencrypt(struct _adapter *padapter,
448 struct xmit_frame *pxmitframe)
450 struct pkt_attrib *pattrib = &pxmitframe->attrib;
452 if (pattrib->bswenc) {
453 switch (pattrib->encrypt) {
456 r8712_wep_encrypt(padapter, (u8 *)pxmitframe);
459 r8712_tkip_encrypt(padapter, (u8 *)pxmitframe);
462 r8712_aes_encrypt(padapter, (u8 *)pxmitframe);
471 static sint make_wlanhdr(struct _adapter *padapter, u8 *hdr,
472 struct pkt_attrib *pattrib)
476 struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr;
477 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
478 struct qos_priv *pqospriv = &pmlmepriv->qospriv;
479 __le16 *fctrl = &pwlanhdr->frame_ctl;
481 memset(hdr, 0, WLANHDR_OFFSET);
482 SetFrameSubType(fctrl, pattrib->subtype);
483 if (pattrib->subtype & WIFI_DATA_TYPE) {
484 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
485 /* to_ds = 1, fr_ds = 0; */
487 memcpy(pwlanhdr->addr1, get_bssid(pmlmepriv),
489 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
490 memcpy(pwlanhdr->addr3, pattrib->dst, ETH_ALEN);
491 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
492 /* to_ds = 0, fr_ds = 1; */
494 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
495 memcpy(pwlanhdr->addr2, get_bssid(pmlmepriv),
497 memcpy(pwlanhdr->addr3, pattrib->src, ETH_ALEN);
498 } else if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) ||
499 check_fwstate(pmlmepriv,
500 WIFI_ADHOC_MASTER_STATE)) {
501 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
502 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
503 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
505 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
506 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
507 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
508 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
514 if (pattrib->encrypt)
516 if (pqospriv->qos_option) {
517 qc = (unsigned short *)(hdr + pattrib->hdrlen - 2);
518 if (pattrib->priority)
519 SetPriority(qc, pattrib->priority);
520 SetAckpolicy(qc, pattrib->ack_policy);
522 /* TODO: fill HT Control Field */
523 /* Update Seq Num will be handled by f/w */
525 struct sta_info *psta;
526 sint bmcst = IS_MCAST(pattrib->ra);
529 psta = pattrib->psta;
532 psta = r8712_get_bcmc_stainfo(padapter);
535 r8712_get_stainfo(&padapter->stapriv,
539 psta->sta_xmitpriv.txseq_tid
540 [pattrib->priority]++;
541 psta->sta_xmitpriv.txseq_tid[pattrib->priority]
543 pattrib->seqnum = psta->sta_xmitpriv.
544 txseq_tid[pattrib->priority];
545 SetSeqNum(hdr, pattrib->seqnum);
552 static sint r8712_put_snap(u8 *data, u16 h_proto)
554 struct ieee80211_snap_hdr *snap;
557 snap = (struct ieee80211_snap_hdr *)data;
561 if (h_proto == 0x8137 || h_proto == 0x80f3)
565 snap->oui[0] = oui[0];
566 snap->oui[1] = oui[1];
567 snap->oui[2] = oui[2];
568 *(__be16 *)(data + SNAP_SIZE) = htons(h_proto);
569 return SNAP_SIZE + sizeof(u16);
573 * This sub-routine will perform all the following:
574 * 1. remove 802.3 header.
575 * 2. create wlan_header, based on the info in pxmitframe
576 * 3. append sta's iv/ext-iv
578 * 5. move frag chunk from pframe to pxmitframe->mem
579 * 6. apply sw-encrypt, if necessary.
581 sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt,
582 struct xmit_frame *pxmitframe)
584 struct pkt_file pktfile;
586 sint frg_len, mpdu_len, llc_sz;
590 u8 *pframe, *mem_start, *ptxdesc;
591 struct sta_info *psta;
592 struct security_priv *psecuritypriv = &padapter->securitypriv;
593 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
594 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
595 struct pkt_attrib *pattrib = &pxmitframe->attrib;
597 sint bmcst = IS_MCAST(pattrib->ra);
599 if (pattrib->psta == NULL)
601 psta = pattrib->psta;
602 if (pxmitframe->buf_addr == NULL)
604 pbuf_start = pxmitframe->buf_addr;
605 ptxdesc = pbuf_start;
606 mem_start = pbuf_start + TXDESC_OFFSET;
607 if (make_wlanhdr(padapter, mem_start, pattrib) == _FAIL)
609 _r8712_open_pktfile(pkt, &pktfile);
610 _r8712_pktfile_read(&pktfile, NULL, (uint) pattrib->pkt_hdrlen);
611 if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
612 /* truncate TXDESC_SIZE bytes txcmd if at mp mode for 871x */
613 if (pattrib->ether_type == 0x8712) {
614 /* take care - update_txdesc overwrite this */
615 _r8712_pktfile_read(&pktfile, ptxdesc, TXDESC_SIZE);
618 pattrib->pktlen = pktfile.pkt_len;
620 frg_len = pxmitpriv->frag_len - 4;
626 pframe += pattrib->hdrlen;
627 mpdu_len -= pattrib->hdrlen;
628 /* adding icv, if necessary...*/
629 if (pattrib->iv_len) {
631 switch (pattrib->encrypt) {
634 WEP_IV(pattrib->iv, psta->txpn,
645 TKIP_IV(pattrib->iv, psta->txpn,
650 AES_IV(pattrib->iv, psta->txpn,
654 AES_IV(pattrib->iv, psta->txpn,
659 memcpy(pframe, pattrib->iv, pattrib->iv_len);
660 pframe += pattrib->iv_len;
661 mpdu_len -= pattrib->iv_len;
664 llc_sz = r8712_put_snap(pframe, pattrib->ether_type);
668 if ((pattrib->icv_len > 0) && (pattrib->bswenc))
669 mpdu_len -= pattrib->icv_len;
671 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
674 mem_sz = _r8712_pktfile_read(&pktfile, pframe,
677 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) {
678 memcpy(pframe, pattrib->icv, pattrib->icv_len);
679 pframe += pattrib->icv_len;
682 if (bmcst || r8712_endofpktfile(&pktfile)) {
683 pattrib->nr_frags = frg_inx;
684 pattrib->last_txcmdsz = pattrib->hdrlen +
686 ((pattrib->nr_frags == 1) ?
689 pattrib->icv_len : 0) + mem_sz;
690 ClearMFrag(mem_start);
693 addr = (addr_t)(pframe);
694 mem_start = (unsigned char *)RND4(addr) + TXDESC_OFFSET;
695 memcpy(mem_start, pbuf_start + TXDESC_OFFSET, pattrib->hdrlen);
698 if (xmitframe_addmic(padapter, pxmitframe) == _FAIL)
700 xmitframe_swencrypt(padapter, pxmitframe);
704 void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len)
709 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
710 struct registry_priv *pregistrypriv = &padapter->registrypriv;
712 switch (pxmitpriv->vcs_setting) {
714 pxmitpriv->vcs = NONE_VCS;
720 perp = r8712_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len);
722 pxmitpriv->vcs = NONE_VCS;
724 protection = (*(perp + 2)) & BIT(1);
726 if (pregistrypriv->vcs_type == RTS_CTS)
727 pxmitpriv->vcs = RTS_CTS;
729 pxmitpriv->vcs = CTS_TO_SELF;
731 pxmitpriv->vcs = NONE_VCS;
738 struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv)
741 struct xmit_buf *pxmitbuf;
742 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
744 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
745 pxmitbuf = list_first_entry_or_null(&pfree_xmitbuf_queue->queue,
746 struct xmit_buf, list);
748 list_del_init(&pxmitbuf->list);
749 pxmitpriv->free_xmitbuf_cnt--;
751 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
755 int r8712_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
758 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
760 if (pxmitbuf == NULL)
762 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
763 list_del_init(&pxmitbuf->list);
764 list_add_tail(&(pxmitbuf->list), &pfree_xmitbuf_queue->queue);
765 pxmitpriv->free_xmitbuf_cnt++;
766 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
773 * 2. RXENTRY (rx_thread or RX_ISR/RX_CallBack)
775 * If we turn on USE_RXTHREAD, then, no need for critical section.
776 * Otherwise, we must use _enter/_exit critical to protect free_xmit_queue...
778 * Must be very very cautious...
781 struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv)
784 * Please remember to use all the osdep_service api,
785 * and lock/unlock or _enter/_exit critical to protect
789 struct xmit_frame *pxframe;
790 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
792 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
793 pxframe = list_first_entry_or_null(&pfree_xmit_queue->queue,
794 struct xmit_frame, list);
796 list_del_init(&pxframe->list);
797 pxmitpriv->free_xmitframe_cnt--;
798 pxframe->buf_addr = NULL;
799 pxframe->pxmitbuf = NULL;
800 pxframe->attrib.psta = NULL;
803 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
807 void r8712_free_xmitframe(struct xmit_priv *pxmitpriv,
808 struct xmit_frame *pxmitframe)
811 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
812 struct _adapter *padapter = pxmitpriv->adapter;
814 if (pxmitframe == NULL)
816 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
817 list_del_init(&pxmitframe->list);
819 pxmitframe->pkt = NULL;
820 list_add_tail(&pxmitframe->list, &pfree_xmit_queue->queue);
821 pxmitpriv->free_xmitframe_cnt++;
822 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
823 if (netif_queue_stopped(padapter->pnetdev))
824 netif_wake_queue(padapter->pnetdev);
827 void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv,
828 struct xmit_frame *pxmitframe)
830 if (pxmitframe == NULL)
832 if (pxmitframe->frame_tag == DATA_FRAMETAG)
833 r8712_free_xmitframe(pxmitpriv, pxmitframe);
836 void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv,
837 struct __queue *pframequeue)
840 struct list_head *plist, *phead;
841 struct xmit_frame *pxmitframe;
843 spin_lock_irqsave(&(pframequeue->lock), irqL);
844 phead = &pframequeue->queue;
846 while (!end_of_queue_search(phead, plist)) {
847 pxmitframe = container_of(plist, struct xmit_frame, list);
849 r8712_free_xmitframe(pxmitpriv, pxmitframe);
851 spin_unlock_irqrestore(&(pframequeue->lock), irqL);
854 static inline struct tx_servq *get_sta_pending(struct _adapter *padapter,
855 struct __queue **ppstapending,
856 struct sta_info *psta, sint up)
859 struct tx_servq *ptxservq;
860 struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
865 ptxservq = &(psta->sta_xmitpriv.bk_q);
866 *ppstapending = &padapter->xmitpriv.bk_pending;
867 (phwxmits + 3)->accnt++;
871 ptxservq = &(psta->sta_xmitpriv.vi_q);
872 *ppstapending = &padapter->xmitpriv.vi_pending;
873 (phwxmits + 1)->accnt++;
877 ptxservq = &(psta->sta_xmitpriv.vo_q);
878 *ppstapending = &padapter->xmitpriv.vo_pending;
879 (phwxmits + 0)->accnt++;
884 ptxservq = &(psta->sta_xmitpriv.be_q);
885 *ppstapending = &padapter->xmitpriv.be_pending;
886 (phwxmits + 2)->accnt++;
893 * Will enqueue pxmitframe to the proper queue, and indicate it
894 * to xx_pending list.....
896 sint r8712_xmit_classifier(struct _adapter *padapter,
897 struct xmit_frame *pxmitframe)
900 struct __queue *pstapending;
901 struct sta_info *psta;
902 struct tx_servq *ptxservq;
903 struct pkt_attrib *pattrib = &pxmitframe->attrib;
904 struct sta_priv *pstapriv = &padapter->stapriv;
905 struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
906 sint bmcst = IS_MCAST(pattrib->ra);
909 psta = pattrib->psta;
912 psta = r8712_get_bcmc_stainfo(padapter);
914 if (check_fwstate(pmlmepriv, WIFI_MP_STATE))
915 psta = r8712_get_stainfo(pstapriv,
916 get_bssid(pmlmepriv));
918 psta = r8712_get_stainfo(pstapriv, pattrib->ra);
923 ptxservq = get_sta_pending(padapter, &pstapending,
924 psta, pattrib->priority);
925 spin_lock_irqsave(&pstapending->lock, irqL0);
926 if (list_empty(&ptxservq->tx_pending))
927 list_add_tail(&ptxservq->tx_pending, &pstapending->queue);
928 list_add_tail(&pxmitframe->list, &ptxservq->sta_pending.queue);
930 spin_unlock_irqrestore(&pstapending->lock, irqL0);
934 static void alloc_hwxmits(struct _adapter *padapter)
936 struct hw_xmit *hwxmits;
937 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
939 pxmitpriv->hwxmit_entry = HWXMIT_ENTRY;
940 pxmitpriv->hwxmits = kmalloc_array(pxmitpriv->hwxmit_entry,
941 sizeof(struct hw_xmit), GFP_ATOMIC);
942 if (!pxmitpriv->hwxmits)
944 hwxmits = pxmitpriv->hwxmits;
945 if (pxmitpriv->hwxmit_entry == 5) {
946 pxmitpriv->bmc_txqueue.head = 0;
947 hwxmits[0] .phwtxqueue = &pxmitpriv->bmc_txqueue;
948 hwxmits[0] .sta_queue = &pxmitpriv->bm_pending;
949 pxmitpriv->vo_txqueue.head = 0;
950 hwxmits[1] .phwtxqueue = &pxmitpriv->vo_txqueue;
951 hwxmits[1] .sta_queue = &pxmitpriv->vo_pending;
952 pxmitpriv->vi_txqueue.head = 0;
953 hwxmits[2] .phwtxqueue = &pxmitpriv->vi_txqueue;
954 hwxmits[2] .sta_queue = &pxmitpriv->vi_pending;
955 pxmitpriv->bk_txqueue.head = 0;
956 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
957 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
958 pxmitpriv->be_txqueue.head = 0;
959 hwxmits[4] .phwtxqueue = &pxmitpriv->be_txqueue;
960 hwxmits[4] .sta_queue = &pxmitpriv->be_pending;
961 } else if (pxmitpriv->hwxmit_entry == 4) {
962 pxmitpriv->vo_txqueue.head = 0;
963 hwxmits[0] .phwtxqueue = &pxmitpriv->vo_txqueue;
964 hwxmits[0] .sta_queue = &pxmitpriv->vo_pending;
965 pxmitpriv->vi_txqueue.head = 0;
966 hwxmits[1] .phwtxqueue = &pxmitpriv->vi_txqueue;
967 hwxmits[1] .sta_queue = &pxmitpriv->vi_pending;
968 pxmitpriv->be_txqueue.head = 0;
969 hwxmits[2] .phwtxqueue = &pxmitpriv->be_txqueue;
970 hwxmits[2] .sta_queue = &pxmitpriv->be_pending;
971 pxmitpriv->bk_txqueue.head = 0;
972 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
973 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
977 static void free_hwxmits(struct _adapter *padapter)
979 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
981 kfree(pxmitpriv->hwxmits);
984 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry)
988 for (i = 0; i < entry; i++, phwxmit++) {
989 spin_lock_init(&phwxmit->xmit_lock);
990 INIT_LIST_HEAD(&phwxmit->pending);
991 phwxmit->txcmdcnt = 0;
996 void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
997 struct xmit_buf *pxmitbuf)
999 /* pxmitbuf attach to pxmitframe */
1000 pxmitframe->pxmitbuf = pxmitbuf;
1001 /* urb and irp connection */
1002 pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
1003 /* buffer addr assoc */
1004 pxmitframe->buf_addr = pxmitbuf->pbuf;
1005 /* pxmitframe attach to pxmitbuf */
1006 pxmitbuf->priv_data = pxmitframe;
1010 * tx_action == 0 == no frames to transmit
1011 * tx_action > 0 ==> we have frames to transmit
1012 * tx_action < 0 ==> we have frames to transmit, but TXFF is not even enough
1013 * to transmit 1 frame.
1016 int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe)
1020 struct xmit_buf *pxmitbuf = NULL;
1021 struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
1022 struct pkt_attrib *pattrib = &pxmitframe->attrib;
1024 r8712_do_queue_select(padapter, pattrib);
1025 spin_lock_irqsave(&pxmitpriv->lock, irqL);
1026 if (r8712_txframes_sta_ac_pending(padapter, pattrib) > 0) {
1028 r8712_xmit_enqueue(padapter, pxmitframe);
1029 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1032 pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv);
1033 if (pxmitbuf == NULL) { /*enqueue packet*/
1035 r8712_xmit_enqueue(padapter, pxmitframe);
1036 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1037 } else { /*dump packet directly*/
1038 spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
1040 xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
1041 r8712_xmit_direct(padapter, pxmitframe);