/******************************************************************************
* 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 "rtl871x_byteorder.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_listhead(&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_listhead(&psta_xmitpriv->legacy_dz);
_init_listhead(&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);
sema_init(&pxmitpriv->xmit_sema, 0);
sema_init(&pxmitpriv->terminate_xmitthread_sema, 0);
/*
Please insert all the queue initializaiton 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 = _malloc(NR_XMITFRAME *
sizeof(struct xmit_frame) + 4);
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_listhead(&(pxframe->list));
pxframe->padapter = padapter;
pxframe->frame_tag = DATA_FRAMETAG;
pxframe->pkt = NULL;
pxframe->buf_addr = NULL;
pxframe->pxmitbuf = NULL;
list_insert_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;
sema_init(&(pxmitpriv->tx_retevt), 0);
/*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 = _malloc(NR_XMITBUFF *
sizeof(struct xmit_buf) + 4);
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_listhead(&pxmitbuf->list);
pxmitbuf->pallocated_buf = _malloc(MAX_XMITBUF_SZ +
XMITBUF_ALIGN_SZ);
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_insert_tail(&pxmitbuf->list,
&(pxmitpriv->free_xmitbuf_queue.queue));
pxmitbuf++;
}
pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF;
alloc_hwxmits(padapter);
init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
tasklet_init(&pxmitpriv->xmit_tasklet,
(void(*)(addr_t))r8712_xmit_bh,
(addr_t)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)
{
uint i;
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);
i = _r8712_pktfile_read(&pktfile, (unsigned char *)ðerhdr, ETH_HLEN);
pattrib->ether_type = ntohs(etherhdr.h_proto);
{
u8 bool;
/*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) {
_cancel_timer(&(pmlmepriv->dhcp_timer), &bool);
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*/
i = _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, datalen;
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};
datalen = pattrib->pktlen - pattrib->hdrlen;
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, 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 (_queue_empty(pfree_xmitbuf_queue) == true)
pxmitbuf = NULL;
else {
phead = get_list_head(pfree_xmitbuf_queue);
plist = get_next(phead);
pxmitbuf = LIST_CONTAINOR(plist, struct xmit_buf, list);
list_delete(&(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_delete(&pxmitbuf->list);
list_insert_tail(&(pxmitbuf->list), get_list_head(pfree_xmitbuf_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 (_queue_empty(pfree_xmit_queue) == true)
pxframe = NULL;
else {
phead = get_list_head(pfree_xmit_queue);
plist = get_next(phead);
pxframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
list_delete(&(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;
if (pxmitframe->pkt)
r8712_xmit_complete(padapter, pxmitframe);
spin_lock_irqsave(&pfree_xmit_queue->lock, irqL);
list_delete(&pxmitframe->list);
list_insert_tail(&pxmitframe->list, get_list_head(pfree_xmit_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 = get_list_head(pframequeue);
plist = get_next(phead);
while (end_of_queue_search(phead, plist) == false) {
pxmitframe = LIST_CONTAINOR(plist, struct xmit_frame, list);
plist = get_next(plist);
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 (is_list_empty(&ptxservq->tx_pending))
list_insert_tail(&ptxservq->tx_pending,
get_list_head(pstapending));
list_insert_tail(&pxmitframe->list,
get_list_head(&ptxservq->sta_pending));
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 = (struct hw_xmit *)_malloc(sizeof(struct hw_xmit) *
pxmitpriv->hwxmit_entry);
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;
if (pxmitpriv->hwxmits)
kfree((u8 *)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_listhead(&phwxmit->pending);
phwxmit->txcmdcnt = 0;
phwxmit->accnt = 0;
}
}
/*
* 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;
pxmitframe->pxmitbuf = pxmitbuf;
pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0];
pxmitframe->buf_addr = pxmitbuf->pbuf;
r8712_xmit_direct(padapter, pxmitframe);
}
return ret;
}