--- /dev/null
+/******************************************************************************
+ * rtl871x_xmit.c
+ *
+ * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved.
+ * Linux device driver for RTL8192SU
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
+ *
+ * Modifications for inclusion into the Linux staging tree are
+ * Copyright(c) 2010 Larry Finger. All rights reserved.
+ *
+ * Contact information:
+ * WLAN FAE <wlanfae@realtek.com>
+ * Larry Finger <Larry.Finger@lwfinger.net>
+ *
+ ******************************************************************************/
+
+#define _RTL871X_XMIT_C_
+
+#include "osdep_service.h"
+#include "drv_types.h"
+#include "wifi.h"
+#include "osdep_intf.h"
+#include "usb_ops.h"
+
+
+static const u8 P802_1H_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0xf8};
+static const u8 RFC1042_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0x00};
+static void init_hwxmits(struct hw_xmit *phwxmit, sint entry);
+static void alloc_hwxmits(struct _adapter *padapter);
+static void free_hwxmits(struct _adapter *padapter);
+
+static void _init_txservq(struct tx_servq *ptxservq)
+{
+ INIT_LIST_HEAD(&ptxservq->tx_pending);
+ _init_queue(&ptxservq->sta_pending);
+ ptxservq->qcnt = 0;
+}
+
+void _r8712_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv)
+{
+ memset((unsigned char *)psta_xmitpriv, 0,
+ sizeof(struct sta_xmit_priv));
+ spin_lock_init(&psta_xmitpriv->lock);
+ _init_txservq(&psta_xmitpriv->be_q);
+ _init_txservq(&psta_xmitpriv->bk_q);
+ _init_txservq(&psta_xmitpriv->vi_q);
+ _init_txservq(&psta_xmitpriv->vo_q);
+ INIT_LIST_HEAD(&psta_xmitpriv->legacy_dz);
+ INIT_LIST_HEAD(&psta_xmitpriv->apsd);
+}
+
+sint _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv,
+ struct _adapter *padapter)
+{
+ sint i;
+ struct xmit_buf *pxmitbuf;
+ struct xmit_frame *pxframe;
+
+ memset((unsigned char *)pxmitpriv, 0, sizeof(struct xmit_priv));
+ spin_lock_init(&pxmitpriv->lock);
+ /*
+ Please insert all the queue initialization using _init_queue below
+ */
+ pxmitpriv->adapter = padapter;
+ _init_queue(&pxmitpriv->be_pending);
+ _init_queue(&pxmitpriv->bk_pending);
+ _init_queue(&pxmitpriv->vi_pending);
+ _init_queue(&pxmitpriv->vo_pending);
+ _init_queue(&pxmitpriv->bm_pending);
+ _init_queue(&pxmitpriv->legacy_dz_queue);
+ _init_queue(&pxmitpriv->apsd_queue);
+ _init_queue(&pxmitpriv->free_xmit_queue);
+ /*
+ Please allocate memory with the sz = (struct xmit_frame) * NR_XMITFRAME,
+ and initialize free_xmit_frame below.
+ Please also apply free_txobj to link_up all the xmit_frames...
+ */
+ pxmitpriv->pallocated_frame_buf = kmalloc(NR_XMITFRAME * sizeof(struct xmit_frame) + 4,
+ GFP_ATOMIC);
+ if (pxmitpriv->pallocated_frame_buf == NULL) {
+ pxmitpriv->pxmit_frame_buf = NULL;
+ return _FAIL;
+ }
+ pxmitpriv->pxmit_frame_buf = pxmitpriv->pallocated_frame_buf + 4 -
+ ((addr_t) (pxmitpriv->pallocated_frame_buf) & 3);
+ pxframe = (struct xmit_frame *) pxmitpriv->pxmit_frame_buf;
+ for (i = 0; i < NR_XMITFRAME; i++) {
+ INIT_LIST_HEAD(&(pxframe->list));
+ pxframe->padapter = padapter;
+ pxframe->frame_tag = DATA_FRAMETAG;
+ pxframe->pkt = NULL;
+ pxframe->buf_addr = NULL;
+ pxframe->pxmitbuf = NULL;
+ list_add_tail(&(pxframe->list),
+ &(pxmitpriv->free_xmit_queue.queue));
+ pxframe++;
+ }
+ pxmitpriv->free_xmitframe_cnt = NR_XMITFRAME;
+ /*
+ init xmit hw_txqueue
+ */
+ _r8712_init_hw_txqueue(&pxmitpriv->be_txqueue, BE_QUEUE_INX);
+ _r8712_init_hw_txqueue(&pxmitpriv->bk_txqueue, BK_QUEUE_INX);
+ _r8712_init_hw_txqueue(&pxmitpriv->vi_txqueue, VI_QUEUE_INX);
+ _r8712_init_hw_txqueue(&pxmitpriv->vo_txqueue, VO_QUEUE_INX);
+ _r8712_init_hw_txqueue(&pxmitpriv->bmc_txqueue, BMC_QUEUE_INX);
+ pxmitpriv->frag_len = MAX_FRAG_THRESHOLD;
+ pxmitpriv->txirp_cnt = 1;
+ /*per AC pending irp*/
+ pxmitpriv->beq_cnt = 0;
+ pxmitpriv->bkq_cnt = 0;
+ pxmitpriv->viq_cnt = 0;
+ pxmitpriv->voq_cnt = 0;
+ /*init xmit_buf*/
+ _init_queue(&pxmitpriv->free_xmitbuf_queue);
+ _init_queue(&pxmitpriv->pending_xmitbuf_queue);
+ pxmitpriv->pallocated_xmitbuf = kmalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4,
+ GFP_ATOMIC);
+ if (pxmitpriv->pallocated_xmitbuf == NULL)
+ return _FAIL;
+ pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 -
+ ((addr_t)(pxmitpriv->pallocated_xmitbuf) & 3);
+ pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
+ for (i = 0; i < NR_XMITBUFF; i++) {
+ INIT_LIST_HEAD(&pxmitbuf->list);
+ pxmitbuf->pallocated_buf = kmalloc(MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ,
+ GFP_ATOMIC);
+ if (pxmitbuf->pallocated_buf == NULL)
+ return _FAIL;
+ pxmitbuf->pbuf = pxmitbuf->pallocated_buf + XMITBUF_ALIGN_SZ -
+ ((addr_t) (pxmitbuf->pallocated_buf) &
+ (XMITBUF_ALIGN_SZ - 1));
+ r8712_xmit_resource_alloc(padapter, pxmitbuf);
+ list_add_tail(&pxmitbuf->list,
+ &(pxmitpriv->free_xmitbuf_queue.queue));
+ pxmitbuf++;
+ }
+ pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF;
+ INIT_WORK(&padapter->wkFilterRxFF0, r8712_SetFilter);
+ alloc_hwxmits(padapter);
+ init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
+ tasklet_init(&pxmitpriv->xmit_tasklet,
+ (void(*)(unsigned long))r8712_xmit_bh,
+ (unsigned long)padapter);
+ return _SUCCESS;
+}
+
+void _free_xmit_priv(struct xmit_priv *pxmitpriv)
+{
+ int i;
+ struct _adapter *padapter = pxmitpriv->adapter;
+ struct xmit_frame *pxmitframe = (struct xmit_frame *)
+ pxmitpriv->pxmit_frame_buf;
+ struct xmit_buf *pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
+
+ if (pxmitpriv->pxmit_frame_buf == NULL)
+ return;
+ for (i = 0; i < NR_XMITFRAME; i++) {
+ r8712_xmit_complete(padapter, pxmitframe);
+ pxmitframe++;
+ }
+ for (i = 0; i < NR_XMITBUFF; i++) {
+ r8712_xmit_resource_free(padapter, pxmitbuf);
+ kfree(pxmitbuf->pallocated_buf);
+ pxmitbuf++;
+ }
+ kfree(pxmitpriv->pallocated_frame_buf);
+ kfree(pxmitpriv->pallocated_xmitbuf);
+ free_hwxmits(padapter);
+}
+
+sint r8712_update_attrib(struct _adapter *padapter, _pkt *pkt,
+ struct pkt_attrib *pattrib)
+{
+ struct pkt_file pktfile;
+ struct sta_info *psta = NULL;
+ struct ethhdr etherhdr;
+
+ struct tx_cmd txdesc;
+
+ sint bmcast;
+ struct sta_priv *pstapriv = &padapter->stapriv;
+ struct security_priv *psecuritypriv = &padapter->securitypriv;
+ struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
+ struct qos_priv *pqospriv = &pmlmepriv->qospriv;
+
+ _r8712_open_pktfile(pkt, &pktfile);
+
+ _r8712_pktfile_read(&pktfile, (unsigned char *)ðerhdr, ETH_HLEN);
+
+ pattrib->ether_type = ntohs(etherhdr.h_proto);
+
+{
+ /*If driver xmit ARP packet, driver can set ps mode to initial
+ * setting. It stands for getting DHCP or fix IP.*/
+ if (pattrib->ether_type == 0x0806) {
+ if (padapter->pwrctrlpriv.pwr_mode !=
+ padapter->registrypriv.power_mgnt) {
+ del_timer_sync(&pmlmepriv->dhcp_timer);
+ r8712_set_ps_mode(padapter, padapter->registrypriv.
+ power_mgnt, padapter->registrypriv.smart_ps);
+ }
+ }
+}
+ memcpy(pattrib->dst, ðerhdr.h_dest, ETH_ALEN);
+ memcpy(pattrib->src, ðerhdr.h_source, ETH_ALEN);
+ pattrib->pctrl = 0;
+ if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
+ (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
+ memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
+ memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
+ } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
+ memcpy(pattrib->ra, get_bssid(pmlmepriv), ETH_ALEN);
+ memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
+ } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
+ memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
+ memcpy(pattrib->ta, get_bssid(pmlmepriv), ETH_ALEN);
+ } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
+ /*firstly, filter packet not belongs to mp*/
+ if (pattrib->ether_type != 0x8712)
+ return _FAIL;
+ /* for mp storing the txcmd per packet,
+ * according to the info of txcmd to update pattrib */
+ /*get MP_TXDESC_SIZE bytes txcmd per packet*/
+ _r8712_pktfile_read(&pktfile, (u8 *)&txdesc, TXDESC_SIZE);
+ memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
+ memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
+ pattrib->pctrl = 1;
+ }
+ /* r8712_xmitframe_coalesce() overwrite this!*/
+ pattrib->pktlen = pktfile.pkt_len;
+ if (ETH_P_IP == pattrib->ether_type) {
+ /* The following is for DHCP and ARP packet, we use cck1M to
+ * tx these packets and let LPS awake some time
+ * to prevent DHCP protocol fail */
+ u8 tmp[24];
+
+ _r8712_pktfile_read(&pktfile, &tmp[0], 24);
+ pattrib->dhcp_pkt = 0;
+ if (pktfile.pkt_len > 282) {/*MINIMUM_DHCP_PACKET_SIZE)*/
+ if (ETH_P_IP == pattrib->ether_type) {/* IP header*/
+ if (((tmp[21] == 68) && (tmp[23] == 67)) ||
+ ((tmp[21] == 67) && (tmp[23] == 68))) {
+ /* 68 : UDP BOOTP client
+ * 67 : UDP BOOTP server
+ * Use low rate to send DHCP packet.*/
+ pattrib->dhcp_pkt = 1;
+ }
+ }
+ }
+ }
+ bmcast = IS_MCAST(pattrib->ra);
+ /* get sta_info*/
+ if (bmcast) {
+ psta = r8712_get_bcmc_stainfo(padapter);
+ pattrib->mac_id = 4;
+ } else {
+ if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
+ psta = r8712_get_stainfo(pstapriv,
+ get_bssid(pmlmepriv));
+ pattrib->mac_id = 5;
+ } else {
+ psta = r8712_get_stainfo(pstapriv, pattrib->ra);
+ if (psta == NULL) /* drop the pkt */
+ return _FAIL;
+ if (check_fwstate(pmlmepriv, WIFI_STATION_STATE))
+ pattrib->mac_id = 5;
+ else
+ pattrib->mac_id = psta->mac_id;
+ }
+ }
+
+ if (psta) {
+ pattrib->psta = psta;
+ } else {
+ /* if we cannot get psta => drrp the pkt */
+ return _FAIL;
+ }
+
+ pattrib->ack_policy = 0;
+ /* get ether_hdr_len */
+ pattrib->pkt_hdrlen = ETH_HLEN;
+
+ if (pqospriv->qos_option)
+ r8712_set_qos(&pktfile, pattrib);
+ else {
+ pattrib->hdrlen = WLAN_HDR_A3_LEN;
+ pattrib->subtype = WIFI_DATA_TYPE;
+ pattrib->priority = 0;
+ }
+ if (psta->ieee8021x_blocked == true) {
+ pattrib->encrypt = 0;
+ if ((pattrib->ether_type != 0x888e) &&
+ (check_fwstate(pmlmepriv, WIFI_MP_STATE) == false))
+ return _FAIL;
+ } else
+ GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast);
+ switch (pattrib->encrypt) {
+ case _WEP40_:
+ case _WEP104_:
+ pattrib->iv_len = 4;
+ pattrib->icv_len = 4;
+ break;
+ case _TKIP_:
+ pattrib->iv_len = 8;
+ pattrib->icv_len = 4;
+ if (padapter->securitypriv.busetkipkey == _FAIL)
+ return _FAIL;
+ break;
+ case _AES_:
+ pattrib->iv_len = 8;
+ pattrib->icv_len = 8;
+ break;
+ default:
+ pattrib->iv_len = 0;
+ pattrib->icv_len = 0;
+ break;
+ }
+
+ if (pattrib->encrypt &&
+ ((padapter->securitypriv.sw_encrypt == true) ||
+ (psecuritypriv->hw_decrypted == false)))
+ pattrib->bswenc = true;
+ else
+ pattrib->bswenc = false;
+ /* if in MP_STATE, update pkt_attrib from mp_txcmd, and overwrite
+ * some settings above.*/
+ if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
+ pattrib->priority = (txdesc.txdw1 >> QSEL_SHT) & 0x1f;
+ return _SUCCESS;
+}
+
+static sint xmitframe_addmic(struct _adapter *padapter,
+ struct xmit_frame *pxmitframe)
+{
+ u32 curfragnum, length;
+ u8 *pframe, *payload, mic[8];
+ struct mic_data micdata;
+ struct sta_info *stainfo;
+ struct qos_priv *pqospriv = &(padapter->mlmepriv.qospriv);
+ struct pkt_attrib *pattrib = &pxmitframe->attrib;
+ struct security_priv *psecuritypriv = &padapter->securitypriv;
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+ u8 priority[4] = {0x0, 0x0, 0x0, 0x0};
+ sint bmcst = IS_MCAST(pattrib->ra);
+
+ if (pattrib->psta)
+ stainfo = pattrib->psta;
+ else
+ stainfo = r8712_get_stainfo(&padapter->stapriv,
+ &pattrib->ra[0]);
+ if (pattrib->encrypt == _TKIP_) {
+ /*encode mic code*/
+ if (stainfo != NULL) {
+ u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+ 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
+ 0x0, 0x0};
+ pframe = pxmitframe->buf_addr + TXDESC_OFFSET;
+ if (bmcst) {
+ if (!memcmp(psecuritypriv->XGrptxmickey
+ [psecuritypriv->XGrpKeyid].skey,
+ null_key, 16))
+ return _FAIL;
+ /*start to calculate the mic code*/
+ r8712_secmicsetkey(&micdata,
+ psecuritypriv->
+ XGrptxmickey[psecuritypriv->
+ XGrpKeyid].skey);
+ } else {
+ if (!memcmp(&stainfo->tkiptxmickey.skey[0],
+ null_key, 16))
+ return _FAIL;
+ /* start to calculate the mic code */
+ r8712_secmicsetkey(&micdata,
+ &stainfo->tkiptxmickey.skey[0]);
+ }
+ if (pframe[1] & 1) { /* ToDS==1 */
+ r8712_secmicappend(&micdata,
+ &pframe[16], 6); /*DA*/
+ if (pframe[1]&2) /* From Ds==1 */
+ r8712_secmicappend(&micdata,
+ &pframe[24], 6);
+ else
+ r8712_secmicappend(&micdata,
+ &pframe[10], 6);
+ } else { /* ToDS==0 */
+ r8712_secmicappend(&micdata,
+ &pframe[4], 6); /* DA */
+ if (pframe[1]&2) /* From Ds==1 */
+ r8712_secmicappend(&micdata,
+ &pframe[16], 6);
+ else
+ r8712_secmicappend(&micdata,
+ &pframe[10], 6);
+ }
+ if (pqospriv->qos_option == 1)
+ priority[0] = (u8)pxmitframe->
+ attrib.priority;
+ r8712_secmicappend(&micdata, &priority[0], 4);
+ payload = pframe;
+ for (curfragnum = 0; curfragnum < pattrib->nr_frags;
+ curfragnum++) {
+ payload = (u8 *)RND4((addr_t)(payload));
+ payload = payload+pattrib->
+ hdrlen+pattrib->iv_len;
+ if ((curfragnum + 1) == pattrib->nr_frags) {
+ length = pattrib->last_txcmdsz -
+ pattrib->hdrlen -
+ pattrib->iv_len -
+ ((psecuritypriv->sw_encrypt)
+ ? pattrib->icv_len : 0);
+ r8712_secmicappend(&micdata, payload,
+ length);
+ payload = payload+length;
+ } else{
+ length = pxmitpriv->frag_len -
+ pattrib->hdrlen-pattrib->iv_len -
+ ((psecuritypriv->sw_encrypt) ?
+ pattrib->icv_len : 0);
+ r8712_secmicappend(&micdata, payload,
+ length);
+ payload = payload + length +
+ pattrib->icv_len;
+ }
+ }
+ r8712_secgetmic(&micdata, &(mic[0]));
+ /* add mic code and add the mic code length in
+ * last_txcmdsz */
+ memcpy(payload, &(mic[0]), 8);
+ pattrib->last_txcmdsz += 8;
+ payload = payload-pattrib->last_txcmdsz + 8;
+ }
+ }
+ return _SUCCESS;
+}
+
+static sint xmitframe_swencrypt(struct _adapter *padapter,
+ struct xmit_frame *pxmitframe)
+{
+ struct pkt_attrib *pattrib = &pxmitframe->attrib;
+
+ if (pattrib->bswenc) {
+ switch (pattrib->encrypt) {
+ case _WEP40_:
+ case _WEP104_:
+ r8712_wep_encrypt(padapter, (u8 *)pxmitframe);
+ break;
+ case _TKIP_:
+ r8712_tkip_encrypt(padapter, (u8 *)pxmitframe);
+ break;
+ case _AES_:
+ r8712_aes_encrypt(padapter, (u8 *)pxmitframe);
+ break;
+ default:
+ break;
+ }
+ }
+ return _SUCCESS;
+}
+
+static sint make_wlanhdr(struct _adapter *padapter, u8 *hdr,
+ struct pkt_attrib *pattrib)
+{
+ u16 *qc;
+
+ struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr;
+ struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
+ struct qos_priv *pqospriv = &pmlmepriv->qospriv;
+ u16 *fctrl = &pwlanhdr->frame_ctl;
+
+ memset(hdr, 0, WLANHDR_OFFSET);
+ SetFrameSubType(fctrl, pattrib->subtype);
+ if (pattrib->subtype & WIFI_DATA_TYPE) {
+ if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) {
+ /* to_ds = 1, fr_ds = 0; */
+ SetToDs(fctrl);
+ memcpy(pwlanhdr->addr1, get_bssid(pmlmepriv),
+ ETH_ALEN);
+ memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
+ memcpy(pwlanhdr->addr3, pattrib->dst, ETH_ALEN);
+ } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
+ /* to_ds = 0, fr_ds = 1; */
+ SetFrDs(fctrl);
+ memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
+ memcpy(pwlanhdr->addr2, get_bssid(pmlmepriv),
+ ETH_ALEN);
+ memcpy(pwlanhdr->addr3, pattrib->src, ETH_ALEN);
+ } else if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true)
+ || (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)
+ == true)) {
+ memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
+ memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
+ memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
+ ETH_ALEN);
+ } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
+ memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
+ memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
+ memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv),
+ ETH_ALEN);
+ } else
+ return _FAIL;
+
+ if (pattrib->encrypt)
+ SetPrivacy(fctrl);
+ if (pqospriv->qos_option) {
+ qc = (unsigned short *)(hdr + pattrib->hdrlen - 2);
+ if (pattrib->priority)
+ SetPriority(qc, pattrib->priority);
+ SetAckpolicy(qc, pattrib->ack_policy);
+ }
+ /* TODO: fill HT Control Field */
+ /* Update Seq Num will be handled by f/w */
+ {
+ struct sta_info *psta;
+ sint bmcst = IS_MCAST(pattrib->ra);
+
+ if (pattrib->psta)
+ psta = pattrib->psta;
+ else {
+ if (bmcst)
+ psta = r8712_get_bcmc_stainfo(padapter);
+ else
+ psta =
+ r8712_get_stainfo(&padapter->stapriv,
+ pattrib->ra);
+ }
+ if (psta) {
+ psta->sta_xmitpriv.txseq_tid
+ [pattrib->priority]++;
+ psta->sta_xmitpriv.txseq_tid[pattrib->priority]
+ &= 0xFFF;
+ pattrib->seqnum = psta->sta_xmitpriv.
+ txseq_tid[pattrib->priority];
+ SetSeqNum(hdr, pattrib->seqnum);
+ }
+ }
+ }
+ return _SUCCESS;
+}
+
+static sint r8712_put_snap(u8 *data, u16 h_proto)
+{
+ struct ieee80211_snap_hdr *snap;
+ const u8 *oui;
+
+ snap = (struct ieee80211_snap_hdr *)data;
+ snap->dsap = 0xaa;
+ snap->ssap = 0xaa;
+ snap->ctrl = 0x03;
+ if (h_proto == 0x8137 || h_proto == 0x80f3)
+ oui = P802_1H_OUI;
+ else
+ oui = RFC1042_OUI;
+ snap->oui[0] = oui[0];
+ snap->oui[1] = oui[1];
+ snap->oui[2] = oui[2];
+ *(u16 *)(data + SNAP_SIZE) = htons(h_proto);
+ return SNAP_SIZE + sizeof(u16);
+}
+
+/*
+ * This sub-routine will perform all the following:
+ * 1. remove 802.3 header.
+ * 2. create wlan_header, based on the info in pxmitframe
+ * 3. append sta's iv/ext-iv
+ * 4. append LLC
+ * 5. move frag chunk from pframe to pxmitframe->mem
+ * 6. apply sw-encrypt, if necessary.
+ */
+sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt,
+ struct xmit_frame *pxmitframe)
+{
+ struct pkt_file pktfile;
+
+ sint frg_len, mpdu_len, llc_sz;
+ u32 mem_sz;
+ u8 frg_inx;
+ addr_t addr;
+ u8 *pframe, *mem_start, *ptxdesc;
+ struct sta_info *psta;
+ struct security_priv *psecuritypriv = &padapter->securitypriv;
+ struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+ struct pkt_attrib *pattrib = &pxmitframe->attrib;
+ u8 *pbuf_start;
+ sint bmcst = IS_MCAST(pattrib->ra);
+
+ if (pattrib->psta == NULL)
+ return _FAIL;
+ psta = pattrib->psta;
+ if (pxmitframe->buf_addr == NULL)
+ return _FAIL;
+ pbuf_start = pxmitframe->buf_addr;
+ ptxdesc = pbuf_start;
+ mem_start = pbuf_start + TXDESC_OFFSET;
+ if (make_wlanhdr(padapter, mem_start, pattrib) == _FAIL)
+ return _FAIL;
+ _r8712_open_pktfile(pkt, &pktfile);
+ _r8712_pktfile_read(&pktfile, NULL, (uint) pattrib->pkt_hdrlen);
+ if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
+ /* truncate TXDESC_SIZE bytes txcmd if at mp mode for 871x */
+ if (pattrib->ether_type == 0x8712) {
+ /* take care - update_txdesc overwrite this */
+ _r8712_pktfile_read(&pktfile, ptxdesc, TXDESC_SIZE);
+ }
+ }
+ pattrib->pktlen = pktfile.pkt_len;
+ frg_inx = 0;
+ frg_len = pxmitpriv->frag_len - 4;
+ while (1) {
+ llc_sz = 0;
+ mpdu_len = frg_len;
+ pframe = mem_start;
+ SetMFrag(mem_start);
+ pframe += pattrib->hdrlen;
+ mpdu_len -= pattrib->hdrlen;
+ /* adding icv, if necessary...*/
+ if (pattrib->iv_len) {
+ if (psta != NULL) {
+ switch (pattrib->encrypt) {
+ case _WEP40_:
+ case _WEP104_:
+ WEP_IV(pattrib->iv, psta->txpn,
+ (u8)psecuritypriv->
+ PrivacyKeyIndex);
+ break;
+ case _TKIP_:
+ if (bmcst)
+ TKIP_IV(pattrib->iv,
+ psta->txpn,
+ (u8)psecuritypriv->
+ XGrpKeyid);
+ else
+ TKIP_IV(pattrib->iv, psta->txpn,
+ 0);
+ break;
+ case _AES_:
+ if (bmcst)
+ AES_IV(pattrib->iv, psta->txpn,
+ (u8)psecuritypriv->
+ XGrpKeyid);
+ else
+ AES_IV(pattrib->iv, psta->txpn,
+ 0);
+ break;
+ }
+ }
+ memcpy(pframe, pattrib->iv, pattrib->iv_len);
+ pframe += pattrib->iv_len;
+ mpdu_len -= pattrib->iv_len;
+ }
+ if (frg_inx == 0) {
+ llc_sz = r8712_put_snap(pframe, pattrib->ether_type);
+ pframe += llc_sz;
+ mpdu_len -= llc_sz;
+ }
+ if ((pattrib->icv_len > 0) && (pattrib->bswenc))
+ mpdu_len -= pattrib->icv_len;
+ if (bmcst)
+ mem_sz = _r8712_pktfile_read(&pktfile, pframe,
+ pattrib->pktlen);
+ else
+ mem_sz = _r8712_pktfile_read(&pktfile, pframe,
+ mpdu_len);
+ pframe += mem_sz;
+ if ((pattrib->icv_len > 0) && (pattrib->bswenc)) {
+ memcpy(pframe, pattrib->icv, pattrib->icv_len);
+ pframe += pattrib->icv_len;
+ }
+ frg_inx++;
+ if (bmcst || (r8712_endofpktfile(&pktfile) == true)) {
+ pattrib->nr_frags = frg_inx;
+ pattrib->last_txcmdsz = pattrib->hdrlen +
+ pattrib->iv_len +
+ ((pattrib->nr_frags == 1) ?
+ llc_sz : 0) +
+ ((pattrib->bswenc) ?
+ pattrib->icv_len : 0) + mem_sz;
+ ClearMFrag(mem_start);
+ break;
+ }
+ addr = (addr_t)(pframe);
+ mem_start = (unsigned char *)RND4(addr) + TXDESC_OFFSET;
+ memcpy(mem_start, pbuf_start + TXDESC_OFFSET, pattrib->hdrlen);
+ }
+
+ if (xmitframe_addmic(padapter, pxmitframe) == _FAIL)
+ return _FAIL;
+ xmitframe_swencrypt(padapter, pxmitframe);
+ return _SUCCESS;
+}
+
+void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len)
+{
+ uint protection;
+ u8 *perp;
+ sint erp_len;
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+ struct registry_priv *pregistrypriv = &padapter->registrypriv;
+
+ switch (pxmitpriv->vcs_setting) {
+ case DISABLE_VCS:
+ pxmitpriv->vcs = NONE_VCS;
+ break;
+ case ENABLE_VCS:
+ break;
+ case AUTO_VCS:
+ default:
+ perp = r8712_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len);
+ if (perp == NULL)
+ pxmitpriv->vcs = NONE_VCS;
+ else {
+ protection = (*(perp + 2)) & BIT(1);
+ if (protection) {
+ if (pregistrypriv->vcs_type == RTS_CTS)
+ pxmitpriv->vcs = RTS_CTS;
+ else
+ pxmitpriv->vcs = CTS_TO_SELF;
+ } else
+ pxmitpriv->vcs = NONE_VCS;
+ }
+ break;
+ }
+}
+
+struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv)
+{
+ unsigned long irqL;
+ struct xmit_buf *pxmitbuf = NULL;
+ struct list_head *plist, *phead;
+ struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
+
+ spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
+ if (list_empty(&pfree_xmitbuf_queue->queue))
+ pxmitbuf = NULL;
+ else {
+ phead = &pfree_xmitbuf_queue->queue;
+ plist = phead->next;
+ pxmitbuf = LIST_CONTAINOR(plist, struct xmit_buf, list);
+ list_del_init(&(pxmitbuf->list));
+ }
+ if (pxmitbuf != NULL)
+ pxmitpriv->free_xmitbuf_cnt--;
+ spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
+ return pxmitbuf;
+}
+
+int r8712_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
+{
+ unsigned long irqL;
+ struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
+
+ if (pxmitbuf == NULL)
+ return _FAIL;
+ spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL);
+ list_del_init(&pxmitbuf->list);
+ list_add_tail(&(pxmitbuf->list), &pfree_xmitbuf_queue->queue);
+ pxmitpriv->free_xmitbuf_cnt++;
+ spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL);
+ return _SUCCESS;
+}
+
+/*
+Calling context:
+1. OS_TXENTRY
+2. RXENTRY (rx_thread or RX_ISR/RX_CallBack)
+
+If we turn on USE_RXTHREAD, then, no need for critical section.
+Otherwise, we must use _enter/_exit critical to protect free_xmit_queue...
+
+Must be very very cautious...
+
+*/
+
+struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv)
+{
+ /*
+ Please remember to use all the osdep_service api,
+ and lock/unlock or _enter/_exit critical to protect
+ pfree_xmit_queue
+ */
+ unsigned long irqL;
+ struct xmit_frame *pxframe = NULL;
+ struct list_head *plist, *phead;
+ struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
+
+ spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
+ if (list_empty(&pfree_xmit_queue->queue))
+ pxframe = NULL;
+ else {
+ phead = &pfree_xmit_queue->queue;
+ plist = phead->next;
+ pxframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
+ list_del_init(&(pxframe->list));
+ }
+ if (pxframe != NULL) {
+ pxmitpriv->free_xmitframe_cnt--;
+ pxframe->buf_addr = NULL;
+ pxframe->pxmitbuf = NULL;
+ pxframe->attrib.psta = NULL;
+ pxframe->pkt = NULL;
+ }
+ spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
+ return pxframe;
+}
+
+void r8712_free_xmitframe(struct xmit_priv *pxmitpriv,
+ struct xmit_frame *pxmitframe)
+{
+ unsigned long irqL;
+ struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
+ struct _adapter *padapter = pxmitpriv->adapter;
+
+ if (pxmitframe == NULL)
+ return;
+ spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
+ list_del_init(&pxmitframe->list);
+ if (pxmitframe->pkt)
+ pxmitframe->pkt = NULL;
+ list_add_tail(&pxmitframe->list, &pfree_xmit_queue->queue);
+ pxmitpriv->free_xmitframe_cnt++;
+ spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL);
+ if (netif_queue_stopped(padapter->pnetdev))
+ netif_wake_queue(padapter->pnetdev);
+}
+
+void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv,
+ struct xmit_frame *pxmitframe)
+{
+ if (pxmitframe == NULL)
+ return;
+ if (pxmitframe->frame_tag == DATA_FRAMETAG)
+ r8712_free_xmitframe(pxmitpriv, pxmitframe);
+}
+
+void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv,
+ struct __queue *pframequeue)
+{
+ unsigned long irqL;
+ struct list_head *plist, *phead;
+ struct xmit_frame *pxmitframe;
+
+ spin_lock_irqsave(&(pframequeue->lock), irqL);
+ phead = &pframequeue->queue;
+ plist = phead->next;
+ while (end_of_queue_search(phead, plist) == false) {
+ pxmitframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
+ plist = plist->next;
+ r8712_free_xmitframe(pxmitpriv, pxmitframe);
+ }
+ spin_unlock_irqrestore(&(pframequeue->lock), irqL);
+}
+
+static inline struct tx_servq *get_sta_pending(struct _adapter *padapter,
+ struct __queue **ppstapending,
+ struct sta_info *psta, sint up)
+{
+
+ struct tx_servq *ptxservq;
+ struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
+
+ switch (up) {
+ case 1:
+ case 2:
+ ptxservq = &(psta->sta_xmitpriv.bk_q);
+ *ppstapending = &padapter->xmitpriv.bk_pending;
+ (phwxmits+3)->accnt++;
+ break;
+ case 4:
+ case 5:
+ ptxservq = &(psta->sta_xmitpriv.vi_q);
+ *ppstapending = &padapter->xmitpriv.vi_pending;
+ (phwxmits+1)->accnt++;
+ break;
+ case 6:
+ case 7:
+ ptxservq = &(psta->sta_xmitpriv.vo_q);
+ *ppstapending = &padapter->xmitpriv.vo_pending;
+ (phwxmits+0)->accnt++;
+ break;
+ case 0:
+ case 3:
+ default:
+ ptxservq = &(psta->sta_xmitpriv.be_q);
+ *ppstapending = &padapter->xmitpriv.be_pending;
+ (phwxmits + 2)->accnt++;
+ break;
+ }
+ return ptxservq;
+}
+
+/*
+ * Will enqueue pxmitframe to the proper queue, and indicate it
+ * to xx_pending list.....
+ */
+sint r8712_xmit_classifier(struct _adapter *padapter,
+ struct xmit_frame *pxmitframe)
+{
+ unsigned long irqL0;
+ struct __queue *pstapending;
+ struct sta_info *psta;
+ struct tx_servq *ptxservq;
+ struct pkt_attrib *pattrib = &pxmitframe->attrib;
+ struct sta_priv *pstapriv = &padapter->stapriv;
+ struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
+ sint bmcst = IS_MCAST(pattrib->ra);
+
+ if (pattrib->psta)
+ psta = pattrib->psta;
+ else {
+ if (bmcst)
+ psta = r8712_get_bcmc_stainfo(padapter);
+ else {
+ if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)
+ psta = r8712_get_stainfo(pstapriv,
+ get_bssid(pmlmepriv));
+ else
+ psta = r8712_get_stainfo(pstapriv, pattrib->ra);
+ }
+ }
+ if (psta == NULL)
+ return _FAIL;
+ ptxservq = get_sta_pending(padapter, &pstapending,
+ psta, pattrib->priority);
+ spin_lock_irqsave(&pstapending->lock, irqL0);
+ if (list_empty(&ptxservq->tx_pending))
+ list_add_tail(&ptxservq->tx_pending, &pstapending->queue);
+ list_add_tail(&pxmitframe->list, &ptxservq->sta_pending.queue);
+ ptxservq->qcnt++;
+ spin_unlock_irqrestore(&pstapending->lock, irqL0);
+ return _SUCCESS;
+}
+
+static void alloc_hwxmits(struct _adapter *padapter)
+{
+ struct hw_xmit *hwxmits;
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+
+ pxmitpriv->hwxmit_entry = HWXMIT_ENTRY;
+ pxmitpriv->hwxmits = kmalloc_array(pxmitpriv->hwxmit_entry,
+ sizeof(struct hw_xmit), GFP_ATOMIC);
+ if (pxmitpriv->hwxmits == NULL)
+ return;
+ hwxmits = pxmitpriv->hwxmits;
+ if (pxmitpriv->hwxmit_entry == 5) {
+ pxmitpriv->bmc_txqueue.head = 0;
+ hwxmits[0] .phwtxqueue = &pxmitpriv->bmc_txqueue;
+ hwxmits[0] .sta_queue = &pxmitpriv->bm_pending;
+ pxmitpriv->vo_txqueue.head = 0;
+ hwxmits[1] .phwtxqueue = &pxmitpriv->vo_txqueue;
+ hwxmits[1] .sta_queue = &pxmitpriv->vo_pending;
+ pxmitpriv->vi_txqueue.head = 0;
+ hwxmits[2] .phwtxqueue = &pxmitpriv->vi_txqueue;
+ hwxmits[2] .sta_queue = &pxmitpriv->vi_pending;
+ pxmitpriv->bk_txqueue.head = 0;
+ hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
+ hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
+ pxmitpriv->be_txqueue.head = 0;
+ hwxmits[4] .phwtxqueue = &pxmitpriv->be_txqueue;
+ hwxmits[4] .sta_queue = &pxmitpriv->be_pending;
+ } else if (pxmitpriv->hwxmit_entry == 4) {
+ pxmitpriv->vo_txqueue.head = 0;
+ hwxmits[0] .phwtxqueue = &pxmitpriv->vo_txqueue;
+ hwxmits[0] .sta_queue = &pxmitpriv->vo_pending;
+ pxmitpriv->vi_txqueue.head = 0;
+ hwxmits[1] .phwtxqueue = &pxmitpriv->vi_txqueue;
+ hwxmits[1] .sta_queue = &pxmitpriv->vi_pending;
+ pxmitpriv->be_txqueue.head = 0;
+ hwxmits[2] .phwtxqueue = &pxmitpriv->be_txqueue;
+ hwxmits[2] .sta_queue = &pxmitpriv->be_pending;
+ pxmitpriv->bk_txqueue.head = 0;
+ hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue;
+ hwxmits[3] .sta_queue = &pxmitpriv->bk_pending;
+ }
+}
+
+static void free_hwxmits(struct _adapter *padapter)
+{
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+
+ kfree(pxmitpriv->hwxmits);
+}
+
+static void init_hwxmits(struct hw_xmit *phwxmit, sint entry)
+{
+ sint i;
+
+ for (i = 0; i < entry; i++, phwxmit++) {
+ spin_lock_init(&phwxmit->xmit_lock);
+ INIT_LIST_HEAD(&phwxmit->pending);
+ phwxmit->txcmdcnt = 0;
+ phwxmit->accnt = 0;
+ }
+}
+
+void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
+ struct xmit_buf *pxmitbuf)
+{
+ /* pxmitbuf attach to pxmitframe */
+ pxmitframe->pxmitbuf = pxmitbuf;
+ /* urb and irp connection */
+ pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
+ /* buffer addr assoc */
+ pxmitframe->buf_addr = pxmitbuf->pbuf;
+ /* pxmitframe attach to pxmitbuf */
+ pxmitbuf->priv_data = pxmitframe;
+}
+
+/*
+ * tx_action == 0 == no frames to transmit
+ * tx_action > 0 ==> we have frames to transmit
+ * tx_action < 0 ==> we have frames to transmit, but TXFF is not even enough
+ * to transmit 1 frame.
+ */
+
+int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe)
+{
+ unsigned long irqL;
+ int ret;
+ struct xmit_buf *pxmitbuf = NULL;
+ struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
+ struct pkt_attrib *pattrib = &pxmitframe->attrib;
+
+ r8712_do_queue_select(padapter, pattrib);
+ spin_lock_irqsave(&pxmitpriv->lock, irqL);
+ if (r8712_txframes_sta_ac_pending(padapter, pattrib) > 0) {
+ ret = false;
+ r8712_xmit_enqueue(padapter, pxmitframe);
+ spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
+ return ret;
+ }
+ pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv);
+ if (pxmitbuf == NULL) { /*enqueue packet*/
+ ret = false;
+ r8712_xmit_enqueue(padapter, pxmitframe);
+ spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
+ } else { /*dump packet directly*/
+ spin_unlock_irqrestore(&pxmitpriv->lock, irqL);
+ ret = true;
+ xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf);
+ r8712_xmit_direct(padapter, pxmitframe);
+ }
+ return ret;
+}
Code Review / kvmfornfv.git / blobdiff