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rtl8188eu/core/rtw_xmit.c
Larry Finger 77d786b6e8 rtl8188eu: Copy the code from the kernel into a new branch 
This version takes advantage of all the cleanups to the code. It has
been modified to build on older kernels.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
2022-06-08 18:46:35 -05:00

2153 lines
53 KiB
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// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2007 - 2012 Realtek Corporation. */
#define _RTW_XMIT_C_
#include "../include/osdep_service.h"
#include "../include/drv_types.h"
#include "../include/wifi.h"
#include "../include/osdep_intf.h"
#include "../include/usb_ops.h"
#include "../include/usb_osintf.h"
#include "../include/rtl8188e_xmit.h"
#include <linux/version.h>
static u8 P802_1H_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0xf8 };
static u8 RFC1042_OUI[P80211_OUI_LEN] = { 0x00, 0x00, 0x00 };
static void _init_txservq(struct tx_servq *ptxservq)
{
INIT_LIST_HEAD(&ptxservq->tx_pending);
rtw_init_queue(&ptxservq->sta_pending);
ptxservq->qcnt = 0;
}
void _rtw_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);
}
s32 _rtw_init_xmit_priv(struct xmit_priv *pxmitpriv, struct adapter *padapter)
{
int i;
struct xmit_buf *pxmitbuf;
struct xmit_frame *pxframe;
int res = _SUCCESS;
u32 max_xmit_extbuf_size = MAX_XMIT_EXTBUF_SZ;
u32 num_xmit_extbuf = NR_XMIT_EXTBUFF;
/* We don't need to memset padapter->XXX to zero, because adapter is allocated by vzalloc(). */
spin_lock_init(&pxmitpriv->lock);
sema_init(&pxmitpriv->terminate_xmitthread_sema, 0);
/*
* Please insert all the queue initializaiton using rtw_init_queue below
*/
pxmitpriv->adapter = padapter;
rtw_init_queue(&pxmitpriv->be_pending);
rtw_init_queue(&pxmitpriv->bk_pending);
rtw_init_queue(&pxmitpriv->vi_pending);
rtw_init_queue(&pxmitpriv->vo_pending);
rtw_init_queue(&pxmitpriv->bm_pending);
rtw_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 = vzalloc(NR_XMITFRAME * sizeof(struct xmit_frame) + 4);
if (!pxmitpriv->pallocated_frame_buf) {
pxmitpriv->pxmit_frame_buf = NULL;
res = _FAIL;
goto exit;
}
pxmitpriv->pxmit_frame_buf = (u8 *)N_BYTE_ALIGMENT((size_t)(pxmitpriv->pallocated_frame_buf), 4);
/* pxmitpriv->pxmit_frame_buf = pxmitpriv->pallocated_frame_buf + 4 - */
/* ((size_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 = NULL_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;
pxmitpriv->frag_len = MAX_FRAG_THRESHOLD;
/* init xmit_buf */
rtw_init_queue(&pxmitpriv->free_xmitbuf_queue);
rtw_init_queue(&pxmitpriv->pending_xmitbuf_queue);
pxmitpriv->pallocated_xmitbuf = vzalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4);
if (!pxmitpriv->pallocated_xmitbuf) {
res = _FAIL;
goto exit;
}
pxmitpriv->pxmitbuf = (u8 *)N_BYTE_ALIGMENT((size_t)(pxmitpriv->pallocated_xmitbuf), 4);
/* pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 - */
/* ((size_t) (pxmitpriv->pallocated_xmitbuf) &3); */
pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf;
for (i = 0; i < NR_XMITBUFF; i++) {
INIT_LIST_HEAD(&pxmitbuf->list);
pxmitbuf->priv_data = NULL;
pxmitbuf->padapter = padapter;
pxmitbuf->ext_tag = false;
/* Tx buf allocation may fail sometimes, so sleep and retry. */
res = rtw_os_xmit_resource_alloc(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ));
if (res == _FAIL) {
msleep(10);
res = rtw_os_xmit_resource_alloc(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ));
if (res == _FAIL)
goto exit;
}
pxmitbuf->flags = XMIT_VO_QUEUE;
list_add_tail(&pxmitbuf->list, &pxmitpriv->free_xmitbuf_queue.queue);
pxmitbuf++;
}
pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF;
/* Init xmit extension buff */
rtw_init_queue(&pxmitpriv->free_xmit_extbuf_queue);
pxmitpriv->pallocated_xmit_extbuf = vzalloc(num_xmit_extbuf * sizeof(struct xmit_buf) + 4);
if (!pxmitpriv->pallocated_xmit_extbuf) {
res = _FAIL;
goto exit;
}
pxmitpriv->pxmit_extbuf = (u8 *)N_BYTE_ALIGMENT((size_t)(pxmitpriv->pallocated_xmit_extbuf), 4);
pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmit_extbuf;
for (i = 0; i < num_xmit_extbuf; i++) {
INIT_LIST_HEAD(&pxmitbuf->list);
pxmitbuf->priv_data = NULL;
pxmitbuf->padapter = padapter;
pxmitbuf->ext_tag = true;
res = rtw_os_xmit_resource_alloc(padapter, pxmitbuf, max_xmit_extbuf_size + XMITBUF_ALIGN_SZ);
if (res == _FAIL) {
res = _FAIL;
goto exit;
}
list_add_tail(&pxmitbuf->list, &pxmitpriv->free_xmit_extbuf_queue.queue);
pxmitbuf++;
}
pxmitpriv->free_xmit_extbuf_cnt = num_xmit_extbuf;
if (rtw_alloc_hwxmits(padapter)) {
res = _FAIL;
goto exit;
}
rtw_init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
for (i = 0; i < 4; i++)
pxmitpriv->wmm_para_seq[i] = i;
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;
pxmitpriv->ack_tx = false;
mutex_init(&pxmitpriv->ack_tx_mutex);
rtw_sctx_init(&pxmitpriv->ack_tx_ops, 0);
rtl8188eu_init_xmit_priv(padapter);
exit:
return res;
}
void _rtw_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;
u32 max_xmit_extbuf_size = MAX_XMIT_EXTBUF_SZ;
u32 num_xmit_extbuf = NR_XMIT_EXTBUFF;
if (!pxmitpriv->pxmit_frame_buf)
return;
for (i = 0; i < NR_XMITFRAME; i++) {
rtw_os_xmit_complete(padapter, pxmitframe);
pxmitframe++;
}
for (i = 0; i < NR_XMITBUFF; i++) {
rtw_os_xmit_resource_free(padapter, pxmitbuf, (MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ));
pxmitbuf++;
}
vfree(pxmitpriv->pallocated_frame_buf);
vfree(pxmitpriv->pallocated_xmitbuf);
pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmit_extbuf;
for (i = 0; i < num_xmit_extbuf; i++) {
rtw_os_xmit_resource_free(padapter, pxmitbuf, (max_xmit_extbuf_size + XMITBUF_ALIGN_SZ));
pxmitbuf++;
}
vfree(pxmitpriv->pallocated_xmit_extbuf);
rtw_free_hwxmits(padapter);
mutex_destroy(&pxmitpriv->ack_tx_mutex);
}
static void update_attrib_vcs_info(struct adapter *padapter, struct xmit_frame *pxmitframe)
{
u32 sz;
struct pkt_attrib *pattrib = &pxmitframe->attrib;
struct sta_info *psta = pattrib->psta;
struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
struct mlme_ext_info *pmlmeinfo = &pmlmeext->mlmext_info;
if (pattrib->nr_frags != 1)
sz = padapter->xmitpriv.frag_len;
else /* no frag */
sz = pattrib->last_txcmdsz;
/* (1) RTS_Threshold is compared to the MPDU, not MSDU. */
/* (2) If there are more than one frag in this MSDU, only the first frag uses protection frame. */
/* Other fragments are protected by previous fragment. */
/* So we only need to check the length of first fragment. */
if (pmlmeext->cur_wireless_mode < WIRELESS_11_24N || padapter->registrypriv.wifi_spec) {
if (sz > padapter->registrypriv.rts_thresh) {
pattrib->vcs_mode = RTS_CTS;
} else {
if (psta->rtsen)
pattrib->vcs_mode = RTS_CTS;
else if (psta->cts2self)
pattrib->vcs_mode = CTS_TO_SELF;
else
pattrib->vcs_mode = NONE_VCS;
}
} else {
while (true) {
/* IOT action */
if ((pmlmeinfo->assoc_AP_vendor == HT_IOT_PEER_ATHEROS) && pattrib->ampdu_en &&
(padapter->securitypriv.dot11PrivacyAlgrthm == _AES_)) {
pattrib->vcs_mode = CTS_TO_SELF;
break;
}
/* check ERP protection */
if (psta->rtsen || psta->cts2self) {
if (psta->rtsen)
pattrib->vcs_mode = RTS_CTS;
else if (psta->cts2self)
pattrib->vcs_mode = CTS_TO_SELF;
break;
}
/* check HT op mode */
if (pattrib->ht_en) {
u8 htopmode = pmlmeinfo->HT_protection;
if ((pmlmeext->cur_bwmode && (htopmode == 2 || htopmode == 3)) ||
(!pmlmeext->cur_bwmode && htopmode == 3)) {
pattrib->vcs_mode = RTS_CTS;
break;
}
}
/* check rts */
if (sz > padapter->registrypriv.rts_thresh) {
pattrib->vcs_mode = RTS_CTS;
break;
}
/* to do list: check MIMO power save condition. */
/* check AMPDU aggregation for TXOP */
if (pattrib->ampdu_en) {
pattrib->vcs_mode = RTS_CTS;
break;
}
pattrib->vcs_mode = NONE_VCS;
break;
}
}
}
static void update_attrib_phy_info(struct pkt_attrib *pattrib, struct sta_info *psta)
{
/*if (psta->rtsen)
pattrib->vcs_mode = RTS_CTS;
else if (psta->cts2self)
pattrib->vcs_mode = CTS_TO_SELF;
else
pattrib->vcs_mode = NONE_VCS;*/
pattrib->mdata = 0;
pattrib->eosp = 0;
pattrib->triggered = 0;
/* qos_en, ht_en, init rate, , bw, ch_offset, sgi */
pattrib->qos_en = psta->qos_option;
pattrib->raid = psta->raid;
pattrib->ht_en = psta->htpriv.ht_option;
pattrib->bwmode = psta->htpriv.bwmode;
pattrib->ch_offset = psta->htpriv.ch_offset;
pattrib->sgi = psta->htpriv.sgi;
pattrib->ampdu_en = false;
pattrib->retry_ctrl = false;
}
u8 qos_acm(u8 acm_mask, u8 priority)
{
u8 change_priority = priority;
switch (priority) {
case 0:
case 3:
if (acm_mask & BIT(1))
change_priority = 1;
break;
case 1:
case 2:
break;
case 4:
case 5:
if (acm_mask & BIT(2))
change_priority = 0;
break;
case 6:
case 7:
if (acm_mask & BIT(3))
change_priority = 5;
break;
default:
break;
}
return change_priority;
}
static void set_qos(struct pkt_file *ppktfile, struct pkt_attrib *pattrib)
{
struct ethhdr etherhdr;
struct iphdr ip_hdr;
s32 user_prio = 0;
_rtw_open_pktfile(ppktfile->pkt, ppktfile);
_rtw_pktfile_read(ppktfile, (unsigned char *)&etherhdr, ETH_HLEN);
/* get user_prio from IP hdr */
if (pattrib->ether_type == 0x0800) {
_rtw_pktfile_read(ppktfile, (u8 *)&ip_hdr, sizeof(ip_hdr));
/* user_prio = (ntohs(ip_hdr.tos) >> 5) & 0x3; */
user_prio = ip_hdr.tos >> 5;
} else if (pattrib->ether_type == 0x888e) {
/* "When priority processing of data frames is supported, */
/* a STA's SME should send EAPOL-Key frames at the highest priority." */
user_prio = 7;
}
pattrib->priority = user_prio;
pattrib->hdrlen = WLAN_HDR_A3_QOS_LEN;
pattrib->subtype = IEEE80211_STYPE_QOS_DATA | IEEE80211_FTYPE_DATA;
}
static s32 update_attrib(struct adapter *padapter, struct sk_buff *pkt, struct pkt_attrib *pattrib)
{
struct pkt_file pktfile;
struct sta_info *psta = NULL;
struct ethhdr etherhdr;
bool 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;
int res = _SUCCESS;
_rtw_open_pktfile(pkt, &pktfile);
_rtw_pktfile_read(&pktfile, (u8 *)&etherhdr, ETH_HLEN);
pattrib->ether_type = ntohs(etherhdr.h_proto);
memcpy(pattrib->dst, &etherhdr.h_dest, ETH_ALEN);
memcpy(pattrib->src, &etherhdr.h_source, ETH_ALEN);
pattrib->pctrl = 0;
if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) ||
check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) {
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);
}
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];
_rtw_pktfile_read(&pktfile, &tmp[0], 24);
pattrib->dhcp_pkt = 0;
if (pktfile.pkt_len > 282) {/* MINIMUM_DHCP_PACKET_SIZE) { */
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;
}
}
}
if ((pattrib->ether_type == 0x888e) || (pattrib->dhcp_pkt == 1))
rtw_set_scan_deny(padapter, 3000);
/* If EAPOL , ARP , OR DHCP packet, driver must be in active mode. */
if ((pattrib->ether_type == 0x0806) || (pattrib->ether_type == 0x888e) || (pattrib->dhcp_pkt == 1))
rtw_lps_ctrl_wk_cmd(padapter, LPS_CTRL_SPECIAL_PACKET, 1);
bmcast = is_multicast_ether_addr(pattrib->ra);
/* get sta_info */
if (bmcast) {
psta = rtw_get_bcmc_stainfo(padapter);
} else {
psta = rtw_get_stainfo(pstapriv, pattrib->ra);
if (!psta) { /* if we cannot get psta => drrp the pkt */
res = _FAIL;
goto exit;
} else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) && !(psta->state & _FW_LINKED)) {
res = _FAIL;
goto exit;
}
}
if (psta) {
pattrib->mac_id = psta->mac_id;
pattrib->psta = psta;
} else {
/* if we cannot get psta => drop the pkt */
res = _FAIL;
goto exit;
}
pattrib->ack_policy = 0;
/* get ether_hdr_len */
pattrib->pkt_hdrlen = ETH_HLEN;/* pattrib->ether_type == 0x8100) ? (14 + 4): 14; vlan tag */
pattrib->hdrlen = WLAN_HDR_A3_LEN;
pattrib->subtype = IEEE80211_FTYPE_DATA;
pattrib->priority = 0;
if (check_fwstate(pmlmepriv, WIFI_AP_STATE | WIFI_ADHOC_STATE | WIFI_ADHOC_MASTER_STATE)) {
if (psta->qos_option)
set_qos(&pktfile, pattrib);
} else {
if (pqospriv->qos_option) {
set_qos(&pktfile, pattrib);
if (pmlmepriv->acm_mask != 0)
pattrib->priority = qos_acm(pmlmepriv->acm_mask, pattrib->priority);
}
}
if (psta->ieee8021x_blocked) {
pattrib->encrypt = 0;
if ((pattrib->ether_type != 0x888e) && !check_fwstate(pmlmepriv, WIFI_MP_STATE)) {
res = _FAIL;
goto exit;
}
} else {
GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast);
switch (psecuritypriv->dot11AuthAlgrthm) {
case dot11AuthAlgrthm_Open:
case dot11AuthAlgrthm_Shared:
case dot11AuthAlgrthm_Auto:
pattrib->key_idx = (u8)psecuritypriv->dot11PrivacyKeyIndex;
break;
case dot11AuthAlgrthm_8021X:
if (bmcast)
pattrib->key_idx = (u8)psecuritypriv->dot118021XGrpKeyid;
else
pattrib->key_idx = 0;
break;
default:
pattrib->key_idx = 0;
break;
}
}
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) {
res = _FAIL;
goto exit;
}
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 || !psecuritypriv->hw_decrypted))
pattrib->bswenc = true;
else
pattrib->bswenc = false;
update_attrib_phy_info(pattrib, psta);
exit:
return res;
}
static s32 xmitframe_addmic(struct adapter *padapter, struct xmit_frame *pxmitframe)
{
int curfragnum, length;
u8 *pframe, *payload, mic[8];
struct mic_data micdata;
struct sta_info *stainfo;
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};
u8 hw_hdr_offset = 0;
if (pattrib->psta)
stainfo = pattrib->psta;
else
stainfo = rtw_get_stainfo(&padapter->stapriv, &pattrib->ra[0]);
hw_hdr_offset = TXDESC_SIZE + (pxmitframe->pkt_offset * PACKET_OFFSET_SZ);
if (pattrib->encrypt == _TKIP_) {/* if (psecuritypriv->dot11PrivacyAlgrthm == _TKIP_PRIVACY_) */
/* encode mic code */
if (stainfo) {
u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
0x0, 0x0};
pframe = pxmitframe->buf_addr + hw_hdr_offset;
if (is_multicast_ether_addr(pattrib->ra)) {
if (!memcmp(psecuritypriv->dot118021XGrptxmickey[psecuritypriv->dot118021XGrpKeyid].skey, null_key, 16))
return _FAIL;
/* start to calculate the mic code */
rtw_secmicsetkey(&micdata, psecuritypriv->dot118021XGrptxmickey[psecuritypriv->dot118021XGrpKeyid].skey);
} else {
if (!memcmp(&stainfo->dot11tkiptxmickey.skey[0], null_key, 16)) {
/* msleep(10); */
return _FAIL;
}
/* start to calculate the mic code */
rtw_secmicsetkey(&micdata, &stainfo->dot11tkiptxmickey.skey[0]);
}
if (pframe[1] & 1) { /* ToDS == 1 */
rtw_secmicappend(&micdata, &pframe[16], 6); /* DA */
if (pframe[1] & 2) /* From Ds == 1 */
rtw_secmicappend(&micdata, &pframe[24], 6);
else
rtw_secmicappend(&micdata, &pframe[10], 6);
} else { /* ToDS == 0 */
rtw_secmicappend(&micdata, &pframe[4], 6); /* DA */
if (pframe[1] & 2) /* From Ds == 1 */
rtw_secmicappend(&micdata, &pframe[16], 6);
else
rtw_secmicappend(&micdata, &pframe[10], 6);
}
if (pattrib->qos_en)
priority[0] = (u8)pxmitframe->attrib.priority;
rtw_secmicappend(&micdata, &priority[0], 4);
payload = pframe;
for (curfragnum = 0; curfragnum < pattrib->nr_frags; curfragnum++) {
payload = PTR_ALIGN(payload, 4);
payload = payload + pattrib->hdrlen + pattrib->iv_len;
if ((curfragnum + 1) == pattrib->nr_frags) {
length = pattrib->last_txcmdsz - pattrib->hdrlen - pattrib->iv_len - ((pattrib->bswenc) ? pattrib->icv_len : 0);
rtw_secmicappend(&micdata, payload, length);
payload = payload + length;
} else {
length = pxmitpriv->frag_len - pattrib->hdrlen - pattrib->iv_len - ((pattrib->bswenc) ? pattrib->icv_len : 0);
rtw_secmicappend(&micdata, payload, length);
payload = payload + length + pattrib->icv_len;
}
}
rtw_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 s32 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_:
rtw_wep_encrypt(padapter, pxmitframe);
break;
case _TKIP_:
rtw_tkip_encrypt(padapter, pxmitframe);
break;
case _AES_:
rtw_aes_encrypt(padapter, pxmitframe);
break;
default:
break;
}
}
return _SUCCESS;
}
s32 rtw_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;
u8 qos_option = false;
int res = _SUCCESS;
__le16 *fctrl = &pwlanhdr->frame_control;
struct sta_info *psta;
if (pattrib->psta)
psta = pattrib->psta;
else if (is_multicast_ether_addr(pattrib->ra))
psta = rtw_get_bcmc_stainfo(padapter);
else
psta = rtw_get_stainfo(&padapter->stapriv, pattrib->ra);
memset(hdr, 0, WLANHDR_OFFSET);
SetFrameSubType(fctrl, pattrib->subtype);
if (pattrib->subtype & IEEE80211_FTYPE_DATA) {
if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) {
/* to_ds = 1, fr_ds = 0; */
/* Data transfer to AP */
SetToDs(fctrl);
memcpy(pwlanhdr->addr1, get_bssid(pmlmepriv), ETH_ALEN);
memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
memcpy(pwlanhdr->addr3, pattrib->dst, ETH_ALEN);
if (pqospriv->qos_option)
qos_option = true;
} else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) {
/* 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);
if (psta->qos_option)
qos_option = true;
} else if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) ||
check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) {
memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN);
memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN);
memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv), ETH_ALEN);
if (psta->qos_option)
qos_option = true;
} else {
res = _FAIL;
goto exit;
}
if (pattrib->mdata)
SetMData(fctrl);
if (pattrib->encrypt)
SetPrivacy(fctrl);
if (qos_option) {
qc = (unsigned short *)(hdr + pattrib->hdrlen - 2);
if (pattrib->priority)
SetPriority(qc, pattrib->priority);
SetEOSP(qc, pattrib->eosp);
SetAckpolicy(qc, pattrib->ack_policy);
}
/* TODO: fill HT Control Field */
/* Update Seq Num will be handled by f/w */
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);
/* check if enable ampdu */
if (pattrib->ht_en && psta->htpriv.ampdu_enable) {
if (psta->htpriv.agg_enable_bitmap & BIT(pattrib->priority))
pattrib->ampdu_en = true;
}
/* re-check if enable ampdu by BA_starting_seqctrl */
if (pattrib->ampdu_en) {
u16 tx_seq;
tx_seq = psta->BA_starting_seqctrl[pattrib->priority & 0x0f];
/* check BA_starting_seqctrl */
if (SN_LESS(pattrib->seqnum, tx_seq)) {
pattrib->ampdu_en = false;/* AGG BK */
} else if (SN_EQUAL(pattrib->seqnum, tx_seq)) {
psta->BA_starting_seqctrl[pattrib->priority & 0x0f] = (tx_seq + 1) & 0xfff;
pattrib->ampdu_en = true;/* AGG EN */
} else {
psta->BA_starting_seqctrl[pattrib->priority & 0x0f] = (pattrib->seqnum + 1) & 0xfff;
pattrib->ampdu_en = true;/* AGG EN */
}
}
}
}
exit:
return res;
}
s32 rtw_txframes_pending(struct adapter *padapter)
{
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
return (!list_empty(&pxmitpriv->be_pending.queue) ||
!list_empty(&pxmitpriv->bk_pending.queue) ||
!list_empty(&pxmitpriv->vi_pending.queue) ||
!list_empty(&pxmitpriv->vo_pending.queue));
}
s32 rtw_txframes_sta_ac_pending(struct adapter *padapter, struct pkt_attrib *pattrib)
{
struct sta_info *psta;
struct tx_servq *ptxservq;
int priority = pattrib->priority;
psta = pattrib->psta;
switch (priority) {
case 1:
case 2:
ptxservq = &psta->sta_xmitpriv.bk_q;
break;
case 4:
case 5:
ptxservq = &psta->sta_xmitpriv.vi_q;
break;
case 6:
case 7:
ptxservq = &psta->sta_xmitpriv.vo_q;
break;
case 0:
case 3:
default:
ptxservq = &psta->sta_xmitpriv.be_q;
break;
}
if (ptxservq)
return ptxservq->qcnt;
return 0;
}
/*
* 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.
*/
s32 rtw_xmitframe_coalesce(struct adapter *padapter, struct sk_buff *pkt, struct xmit_frame *pxmitframe)
{
struct pkt_file pktfile;
s32 frg_inx, frg_len, mpdu_len, llc_sz, mem_sz;
u8 *pframe, *mem_start;
u8 hw_hdr_offset;
struct sta_info *psta;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
struct pkt_attrib *pattrib = &pxmitframe->attrib;
u8 *pbuf_start;
bool bmcst = is_multicast_ether_addr(pattrib->ra);
s32 res = _SUCCESS;
if (!pkt)
return _FAIL;
psta = rtw_get_stainfo(&padapter->stapriv, pattrib->ra);
if (!psta)
return _FAIL;
if (!pxmitframe->buf_addr)
return _FAIL;
pbuf_start = pxmitframe->buf_addr;
hw_hdr_offset = TXDESC_SIZE + (pxmitframe->pkt_offset * PACKET_OFFSET_SZ);
mem_start = pbuf_start + hw_hdr_offset;
if (rtw_make_wlanhdr(padapter, mem_start, pattrib) == _FAIL) {
res = _FAIL;
goto exit;
}
_rtw_open_pktfile(pkt, &pktfile);
_rtw_pktfile_read(&pktfile, NULL, pattrib->pkt_hdrlen);
frg_inx = 0;
frg_len = pxmitpriv->frag_len - 4;/* 2346-4 = 2342 */
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) {
switch (pattrib->encrypt) {
case _WEP40_:
case _WEP104_:
WEP_IV(pattrib->iv, psta->dot11txpn, pattrib->key_idx);
break;
case _TKIP_:
if (bmcst)
TKIP_IV(pattrib->iv, psta->dot11txpn, pattrib->key_idx);
else
TKIP_IV(pattrib->iv, psta->dot11txpn, 0);
break;
case _AES_:
if (bmcst)
AES_IV(pattrib->iv, psta->dot11txpn, pattrib->key_idx);
else
AES_IV(pattrib->iv, psta->dot11txpn, 0);
break;
}
}
memcpy(pframe, pattrib->iv, pattrib->iv_len);
pframe += pattrib->iv_len;
mpdu_len -= pattrib->iv_len;
}
if (frg_inx == 0) {
llc_sz = rtw_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) {
/* don't do fragment to broadcat/multicast packets */
mem_sz = _rtw_pktfile_read(&pktfile, pframe, pattrib->pktlen);
} else {
mem_sz = _rtw_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 || rtw_endofpktfile(&pktfile)) {
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;
}
mem_start = PTR_ALIGN(pframe, 4) + hw_hdr_offset;
memcpy(mem_start, pbuf_start + hw_hdr_offset, pattrib->hdrlen);
}
if (xmitframe_addmic(padapter, pxmitframe) == _FAIL) {
res = _FAIL;
goto exit;
}
xmitframe_swencrypt(padapter, pxmitframe);
if (!bmcst)
update_attrib_vcs_info(padapter, pxmitframe);
else
pattrib->vcs_mode = NONE_VCS;
exit:
return res;
}
/* Logical Link Control(LLC) SubNetwork Attachment Point(SNAP) header
* IEEE LLC/SNAP header contains 8 octets
* First 3 octets comprise the LLC portion
* SNAP portion, 5 octets, is divided into two fields:
* Organizationally Unique Identifier(OUI), 3 octets,
* type, defined by that organization, 2 octets.
*/
s32 rtw_put_snap(u8 *data, u16 h_proto)
{
struct ieee80211_snap_hdr *snap;
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];
*(__be16 *)(data + SNAP_SIZE) = htons(h_proto);
return SNAP_SIZE + sizeof(u16);
}
void rtw_update_protection(struct adapter *padapter, u8 *ie, uint ie_len)
{
uint protection;
u8 *perp;
int 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 = rtw_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len);
if (!perp) {
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;
}
}
void rtw_count_tx_stats(struct adapter *padapter, struct xmit_frame *pxmitframe, int sz)
{
struct sta_info *psta = NULL;
struct stainfo_stats *pstats = NULL;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
if ((pxmitframe->frame_tag & 0x0f) == DATA_FRAMETAG) {
pxmitpriv->tx_bytes += sz;
pmlmepriv->LinkDetectInfo.NumTxOkInPeriod += pxmitframe->agg_num;
psta = pxmitframe->attrib.psta;
if (psta) {
pstats = &psta->sta_stats;
pstats->tx_pkts += pxmitframe->agg_num;
pstats->tx_bytes += sz;
}
}
}
struct xmit_buf *rtw_alloc_xmitbuf_ext(struct xmit_priv *pxmitpriv)
{
struct xmit_buf *pxmitbuf = NULL;
struct list_head *plist, *phead;
struct __queue *pfree_queue = &pxmitpriv->free_xmit_extbuf_queue;
unsigned long flags;
spin_lock_irqsave(&pfree_queue->lock, flags);
if (list_empty(&pfree_queue->queue)) {
pxmitbuf = NULL;
} else {
phead = get_list_head(pfree_queue);
plist = phead->next;
pxmitbuf = container_of(plist, struct xmit_buf, list);
list_del_init(&pxmitbuf->list);
}
if (pxmitbuf) {
pxmitpriv->free_xmit_extbuf_cnt--;
pxmitbuf->priv_data = NULL;
/* pxmitbuf->ext_tag = true; */
if (pxmitbuf->sctx)
rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_BUF_ALLOC);
}
spin_unlock_irqrestore(&pfree_queue->lock, flags);
return pxmitbuf;
}
s32 rtw_free_xmitbuf_ext(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
{
struct __queue *pfree_queue = &pxmitpriv->free_xmit_extbuf_queue;
unsigned long flags;
if (!pxmitbuf)
return _FAIL;
spin_lock_irqsave(&pfree_queue->lock, flags);
list_del_init(&pxmitbuf->list);
list_add_tail(&pxmitbuf->list, get_list_head(pfree_queue));
pxmitpriv->free_xmit_extbuf_cnt++;
spin_unlock_irqrestore(&pfree_queue->lock, flags);
return _SUCCESS;
}
struct xmit_buf *rtw_alloc_xmitbuf(struct xmit_priv *pxmitpriv)
{
struct xmit_buf *pxmitbuf = NULL;
struct list_head *plist, *phead;
struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
unsigned long flags;
spin_lock_irqsave(&pfree_xmitbuf_queue->lock, flags);
if (list_empty(&pfree_xmitbuf_queue->queue)) {
pxmitbuf = NULL;
} else {
phead = get_list_head(pfree_xmitbuf_queue);
plist = phead->next;
pxmitbuf = container_of(plist, struct xmit_buf, list);
list_del_init(&pxmitbuf->list);
}
if (pxmitbuf) {
pxmitpriv->free_xmitbuf_cnt--;
pxmitbuf->priv_data = NULL;
if (pxmitbuf->sctx)
rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_BUF_ALLOC);
}
spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, flags);
return pxmitbuf;
}
s32 rtw_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
{
struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue;
unsigned long flags;
if (!pxmitbuf)
return _FAIL;
if (pxmitbuf->sctx)
rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_BUF_FREE);
if (pxmitbuf->ext_tag) {
rtw_free_xmitbuf_ext(pxmitpriv, pxmitbuf);
} else {
spin_lock_irqsave(&pfree_xmitbuf_queue->lock, flags);
list_del_init(&pxmitbuf->list);
list_add_tail(&pxmitbuf->list, get_list_head(pfree_xmitbuf_queue));
pxmitpriv->free_xmitbuf_cnt++;
spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, flags);
}
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 *rtw_alloc_xmitframe(struct xmit_priv *pxmitpriv)/* _queue *pfree_xmit_queue) */
{
/*
* Please remember to use all the osdep_service api,
* and lock/unlock or _enter/_exit critical to protect
* pfree_xmit_queue
*/
struct xmit_frame *pxframe = NULL;
struct list_head *plist, *phead;
struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
spin_lock_bh(&pfree_xmit_queue->lock);
if (list_empty(&pfree_xmit_queue->queue)) {
pxframe = NULL;
} else {
phead = get_list_head(pfree_xmit_queue);
plist = phead->next;
pxframe = container_of(plist, struct xmit_frame, list);
list_del_init(&pxframe->list);
}
if (pxframe) { /* default value setting */
pxmitpriv->free_xmitframe_cnt--;
pxframe->buf_addr = NULL;
pxframe->pxmitbuf = NULL;
memset(&pxframe->attrib, 0, sizeof(struct pkt_attrib));
/* pxframe->attrib.psta = NULL; */
pxframe->frame_tag = DATA_FRAMETAG;
pxframe->pkt = NULL;
pxframe->pkt_offset = 1;/* default use pkt_offset to fill tx desc */
pxframe->agg_num = 1;
pxframe->ack_report = 0;
}
spin_unlock_bh(&pfree_xmit_queue->lock);
return pxframe;
}
s32 rtw_free_xmitframe(struct xmit_priv *pxmitpriv, struct xmit_frame *pxmitframe)
{
struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue;
struct adapter *padapter = pxmitpriv->adapter;
struct sk_buff *pndis_pkt = NULL;
if (!pxmitframe)
goto exit;
spin_lock_bh(&pfree_xmit_queue->lock);
list_del_init(&pxmitframe->list);
if (pxmitframe->pkt) {
pndis_pkt = pxmitframe->pkt;
pxmitframe->pkt = NULL;
}
list_add_tail(&pxmitframe->list, get_list_head(pfree_xmit_queue));
pxmitpriv->free_xmitframe_cnt++;
spin_unlock_bh(&pfree_xmit_queue->lock);
if (pndis_pkt)
rtw_os_pkt_complete(padapter, pndis_pkt);
exit:
return _SUCCESS;
}
void rtw_free_xmitframe_queue(struct xmit_priv *pxmitpriv, struct __queue *pframequeue)
{
struct list_head *plist, *phead;
struct xmit_frame *pxmitframe;
spin_lock_bh(&pframequeue->lock);
phead = get_list_head(pframequeue);
plist = phead->next;
while (phead != plist) {
pxmitframe = container_of(plist, struct xmit_frame, list);
plist = plist->next;
rtw_free_xmitframe(pxmitpriv, pxmitframe);
}
spin_unlock_bh(&pframequeue->lock);
}
s32 rtw_xmitframe_enqueue(struct adapter *padapter, struct xmit_frame *pxmitframe)
{
if (rtw_xmit_classifier(padapter, pxmitframe) == _FAIL) {
/* pxmitframe->pkt = NULL; */
return _FAIL;
}
return _SUCCESS;
}
static struct xmit_frame *dequeue_one_xmitframe(struct xmit_priv *pxmitpriv, struct hw_xmit *phwxmit, struct tx_servq *ptxservq, struct __queue *pframe_queue)
{
struct list_head *xmitframe_plist, *xmitframe_phead;
struct xmit_frame *pxmitframe = NULL;
xmitframe_phead = get_list_head(pframe_queue);
xmitframe_plist = xmitframe_phead->next;
if (xmitframe_phead != xmitframe_plist) {
pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
xmitframe_plist = xmitframe_plist->next;
list_del_init(&pxmitframe->list);
ptxservq->qcnt--;
}
return pxmitframe;
}
struct xmit_frame *rtw_dequeue_xframe(struct xmit_priv *pxmitpriv, struct hw_xmit *phwxmit_i, int entry)
{
struct list_head *sta_plist, *sta_phead;
struct hw_xmit *phwxmit;
struct tx_servq *ptxservq = NULL;
struct __queue *pframe_queue = NULL;
struct xmit_frame *pxmitframe = NULL;
struct adapter *padapter = pxmitpriv->adapter;
struct registry_priv *pregpriv = &padapter->registrypriv;
int i, inx[4];
inx[0] = 0; inx[1] = 1; inx[2] = 2; inx[3] = 3;
if (pregpriv->wifi_spec == 1) {
int j;
for (j = 0; j < 4; j++)
inx[j] = pxmitpriv->wmm_para_seq[j];
}
spin_lock_bh(&pxmitpriv->lock);
for (i = 0; i < entry; i++) {
phwxmit = phwxmit_i + inx[i];
sta_phead = get_list_head(phwxmit->sta_queue);
sta_plist = sta_phead->next;
while (sta_phead != sta_plist) {
ptxservq = container_of(sta_plist, struct tx_servq, tx_pending);
pframe_queue = &ptxservq->sta_pending;
pxmitframe = dequeue_one_xmitframe(pxmitpriv, phwxmit, ptxservq, pframe_queue);
if (pxmitframe) {
phwxmit->accnt--;
/* Remove sta node when there are no pending packets. */
if (list_empty(&pframe_queue->queue)) /* must be done after get_next and before break */
list_del_init(&ptxservq->tx_pending);
goto exit;
}
sta_plist = sta_plist->next;
}
}
exit:
spin_unlock_bh(&pxmitpriv->lock);
return pxmitframe;
}
struct tx_servq *rtw_get_sta_pending(struct adapter *padapter, struct sta_info *psta, int up, u8 *ac)
{
struct tx_servq *ptxservq;
switch (up) {
case 1:
case 2:
ptxservq = &psta->sta_xmitpriv.bk_q;
*(ac) = 3;
break;
case 4:
case 5:
ptxservq = &psta->sta_xmitpriv.vi_q;
*(ac) = 1;
break;
case 6:
case 7:
ptxservq = &psta->sta_xmitpriv.vo_q;
*(ac) = 0;
break;
case 0:
case 3:
default:
ptxservq = &psta->sta_xmitpriv.be_q;
*(ac) = 2;
break;
}
return ptxservq;
}
/*
* Will enqueue pxmitframe to the proper queue,
* and indicate it to xx_pending list.....
*/
s32 rtw_xmit_classifier(struct adapter *padapter, struct xmit_frame *pxmitframe)
{
u8 ac_index;
struct sta_info *psta;
struct tx_servq *ptxservq;
struct pkt_attrib *pattrib = &pxmitframe->attrib;
struct sta_priv *pstapriv = &padapter->stapriv;
struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
int res = _SUCCESS;
if (pattrib->psta)
psta = pattrib->psta;
else
psta = rtw_get_stainfo(pstapriv, pattrib->ra);
if (!psta) {
res = _FAIL;
goto exit;
}
ptxservq = rtw_get_sta_pending(padapter, psta, pattrib->priority, (u8 *)(&ac_index));
if (list_empty(&ptxservq->tx_pending))
list_add_tail(&ptxservq->tx_pending, get_list_head(phwxmits[ac_index].sta_queue));
list_add_tail(&pxmitframe->list, get_list_head(&ptxservq->sta_pending));
ptxservq->qcnt++;
phwxmits[ac_index].accnt++;
exit:
return res;
}
int rtw_alloc_hwxmits(struct adapter *padapter)
{
struct hw_xmit *hwxmits;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
pxmitpriv->hwxmit_entry = HWXMIT_ENTRY;
pxmitpriv->hwxmits = kzalloc(sizeof(struct hw_xmit) * pxmitpriv->hwxmit_entry, GFP_KERNEL);
if (!pxmitpriv->hwxmits)
return -ENOMEM;
hwxmits = pxmitpriv->hwxmits;
hwxmits[0].sta_queue = &pxmitpriv->vo_pending;
hwxmits[1].sta_queue = &pxmitpriv->vi_pending;
hwxmits[2].sta_queue = &pxmitpriv->be_pending;
hwxmits[3].sta_queue = &pxmitpriv->bk_pending;
return 0;
}
void rtw_free_hwxmits(struct adapter *padapter)
{
struct hw_xmit *hwxmits;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
hwxmits = pxmitpriv->hwxmits;
kfree(hwxmits);
}
void rtw_init_hwxmits(struct hw_xmit *phwxmit, int entry)
{
int i;
for (i = 0; i < entry; i++, phwxmit++)
phwxmit->accnt = 0;
}
static int rtw_br_client_tx(struct adapter *padapter, struct sk_buff **pskb)
{
struct sk_buff *skb = *pskb;
int res, is_vlan_tag = 0, i, do_nat25 = 1;
unsigned short vlan_hdr = 0;
void *br_port = NULL;
rcu_read_lock();
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
br_port = rcu_dereference(padapter->pnetdev->rx_handler_data);
#else
br_port = rcu_dereference(padapter->pnetdev->br_port);
#endif
rcu_read_unlock();
spin_lock_bh(&padapter->br_ext_lock);
if (!(skb->data[0] & 1) && br_port &&
memcmp(skb->data + ETH_ALEN, padapter->br_mac, ETH_ALEN) &&
*((__be16 *)(skb->data + ETH_ALEN * 2)) != __constant_htons(ETH_P_8021Q) &&
*((__be16 *)(skb->data + ETH_ALEN * 2)) == __constant_htons(ETH_P_IP) &&
!memcmp(padapter->scdb_mac, skb->data + ETH_ALEN, ETH_ALEN) && padapter->scdb_entry) {
memcpy(skb->data + ETH_ALEN, GET_MY_HWADDR(padapter), ETH_ALEN);
padapter->scdb_entry->ageing_timer = jiffies;
spin_unlock_bh(&padapter->br_ext_lock);
} else {
if (*((__be16 *)(skb->data + ETH_ALEN * 2)) == __constant_htons(ETH_P_8021Q)) {
is_vlan_tag = 1;
vlan_hdr = *((unsigned short *)(skb->data + ETH_ALEN * 2 + 2));
for (i = 0; i < 6; i++)
*((unsigned short *)(skb->data + ETH_ALEN * 2 + 2 - i * 2)) = *((unsigned short *)(skb->data + ETH_ALEN * 2 - 2 - i * 2));
skb_pull(skb, 4);
}
if (!memcmp(skb->data + ETH_ALEN, padapter->br_mac, ETH_ALEN) &&
(*((__be16 *)(skb->data + ETH_ALEN * 2)) == __constant_htons(ETH_P_IP)))
memcpy(padapter->br_ip, skb->data + WLAN_ETHHDR_LEN + 12, 4);
if (*((__be16 *)(skb->data + ETH_ALEN * 2)) == __constant_htons(ETH_P_IP)) {
if (memcmp(padapter->scdb_mac, skb->data + ETH_ALEN, ETH_ALEN)) {
padapter->scdb_entry = (struct nat25_network_db_entry *)scdb_findEntry(padapter,
skb->data + WLAN_ETHHDR_LEN + 12);
if (padapter->scdb_entry) {
memcpy(padapter->scdb_mac, skb->data + ETH_ALEN, ETH_ALEN);
memcpy(padapter->scdb_ip, skb->data + WLAN_ETHHDR_LEN + 12, 4);
padapter->scdb_entry->ageing_timer = jiffies;
do_nat25 = 0;
}
} else {
if (padapter->scdb_entry) {
padapter->scdb_entry->ageing_timer = jiffies;
do_nat25 = 0;
} else {
memset(padapter->scdb_mac, 0, ETH_ALEN);
memset(padapter->scdb_ip, 0, 4);
}
}
}
spin_unlock_bh(&padapter->br_ext_lock);
if (do_nat25) {
if (nat25_db_handle(padapter, skb, NAT25_CHECK) == 0) {
struct sk_buff *newskb;
if (is_vlan_tag) {
skb_push(skb, 4);
for (i = 0; i < 6; i++)
*((unsigned short *)(skb->data + i * 2)) = *((unsigned short *)(skb->data + 4 + i * 2));
*((__be16 *)(skb->data + ETH_ALEN * 2)) = __constant_htons(ETH_P_8021Q);
*((unsigned short *)(skb->data + ETH_ALEN * 2 + 2)) = vlan_hdr;
}
newskb = skb_copy(skb, GFP_ATOMIC);
if (!newskb)
return -1;
dev_kfree_skb_any(skb);
*pskb = skb = newskb;
if (is_vlan_tag) {
vlan_hdr = *((unsigned short *)(skb->data + ETH_ALEN * 2 + 2));
for (i = 0; i < 6; i++)
*((unsigned short *)(skb->data + ETH_ALEN * 2 + 2 - i * 2)) = *((unsigned short *)(skb->data + ETH_ALEN * 2 - 2 - i * 2));
skb_pull(skb, 4);
}
}
res = skb_linearize(skb);
if (res < 0)
return -1;
res = nat25_db_handle(padapter, skb, NAT25_INSERT);
if (res < 0) {
if (res == -2)
return -1;
return 0;
}
}
memcpy(skb->data + ETH_ALEN, GET_MY_HWADDR(padapter), ETH_ALEN);
dhcp_flag_bcast(padapter, skb);
if (is_vlan_tag) {
skb_push(skb, 4);
for (i = 0; i < 6; i++)
*((unsigned short *)(skb->data + i * 2)) = *((unsigned short *)(skb->data + 4 + i * 2));
*((__be16 *)(skb->data + ETH_ALEN * 2)) = __constant_htons(ETH_P_8021Q);
*((unsigned short *)(skb->data + ETH_ALEN * 2 + 2)) = vlan_hdr;
}
}
/* check if SA is equal to our MAC */
if (memcmp(skb->data + ETH_ALEN, GET_MY_HWADDR(padapter), ETH_ALEN))
return -1;
return 0;
}
u32 rtw_get_ff_hwaddr(struct xmit_frame *pxmitframe)
{
u32 addr;
struct pkt_attrib *pattrib = &pxmitframe->attrib;
switch (pattrib->qsel) {
case 0:
case 3:
addr = BE_QUEUE_INX;
break;
case 1:
case 2:
addr = BK_QUEUE_INX;
break;
case 4:
case 5:
addr = VI_QUEUE_INX;
break;
case 6:
case 7:
addr = VO_QUEUE_INX;
break;
case 0x10:
addr = BCN_QUEUE_INX;
break;
case 0x11:/* BC/MC in PS (HIQ) */
addr = HIGH_QUEUE_INX;
break;
case 0x12:
default:
addr = MGT_QUEUE_INX;
break;
}
return addr;
}
static void do_queue_select(struct adapter *padapter, struct pkt_attrib *pattrib)
{
u8 qsel;
qsel = pattrib->priority;
pattrib->qsel = qsel;
}
/*
* The main transmit(tx) entry
*
* Return
* 1 enqueue
* 0 success, hardware will handle this xmit frame(packet)
* <0 fail
*/
s32 rtw_xmit(struct adapter *padapter, struct sk_buff **ppkt)
{
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
struct xmit_frame *pxmitframe = NULL;
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
void *br_port = NULL;
s32 res;
pxmitframe = rtw_alloc_xmitframe(pxmitpriv);
if (!pxmitframe)
return -1;
rcu_read_lock();
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36)
br_port = rcu_dereference(padapter->pnetdev->rx_handler_data);
#else
br_port = rcu_dereference(padapter->pnetdev->br_port);
#endif
rcu_read_unlock();
if (br_port && check_fwstate(pmlmepriv, WIFI_STATION_STATE | WIFI_ADHOC_STATE)) {
res = rtw_br_client_tx(padapter, ppkt);
if (res == -1) {
rtw_free_xmitframe(pxmitpriv, pxmitframe);
return -1;
}
}
res = update_attrib(padapter, *ppkt, &pxmitframe->attrib);
if (res == _FAIL) {
rtw_free_xmitframe(pxmitpriv, pxmitframe);
return -1;
}
pxmitframe->pkt = *ppkt;
rtw_led_control(padapter, LED_CTL_TX);
do_queue_select(padapter, &pxmitframe->attrib);
spin_lock_bh(&pxmitpriv->lock);
if (xmitframe_enqueue_for_sleeping_sta(padapter, pxmitframe)) {
spin_unlock_bh(&pxmitpriv->lock);
return 1;
}
spin_unlock_bh(&pxmitpriv->lock);
if (!rtl8188eu_hal_xmit(padapter, pxmitframe))
return 1;
return 0;
}
int xmitframe_enqueue_for_sleeping_sta(struct adapter *padapter, struct xmit_frame *pxmitframe)
{
int ret = false;
struct sta_info *psta = NULL;
struct sta_priv *pstapriv = &padapter->stapriv;
struct pkt_attrib *pattrib = &pxmitframe->attrib;
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
bool bmcst = is_multicast_ether_addr(pattrib->ra);
if (!check_fwstate(pmlmepriv, WIFI_AP_STATE))
return ret;
if (pattrib->psta)
psta = pattrib->psta;
else
psta = rtw_get_stainfo(pstapriv, pattrib->ra);
if (!psta)
return ret;
if (pattrib->triggered == 1) {
if (bmcst)
pattrib->qsel = 0x11;/* HIQ */
return ret;
}
if (bmcst) {
spin_lock_bh(&psta->sleep_q.lock);
if (pstapriv->sta_dz_bitmap) {/* if any one sta is in ps mode */
list_del_init(&pxmitframe->list);
list_add_tail(&pxmitframe->list, get_list_head(&psta->sleep_q));
psta->sleepq_len++;
pstapriv->tim_bitmap |= BIT(0);/* */
pstapriv->sta_dz_bitmap |= BIT(0);
update_beacon(padapter, _TIM_IE_, NULL, false);/* tx bc/mc packets after upate bcn */
ret = true;
}
spin_unlock_bh(&psta->sleep_q.lock);
return ret;
}
spin_lock_bh(&psta->sleep_q.lock);
if (psta->state & WIFI_SLEEP_STATE) {
u8 wmmps_ac = 0;
if (pstapriv->sta_dz_bitmap & BIT(psta->aid)) {
list_del_init(&pxmitframe->list);
list_add_tail(&pxmitframe->list, get_list_head(&psta->sleep_q));
psta->sleepq_len++;
switch (pattrib->priority) {
case 1:
case 2:
wmmps_ac = psta->uapsd_bk & BIT(0);
break;
case 4:
case 5:
wmmps_ac = psta->uapsd_vi & BIT(0);
break;
case 6:
case 7:
wmmps_ac = psta->uapsd_vo & BIT(0);
break;
case 0:
case 3:
default:
wmmps_ac = psta->uapsd_be & BIT(0);
break;
}
if (wmmps_ac)
psta->sleepq_ac_len++;
if (((psta->has_legacy_ac) && (!wmmps_ac)) ||
((!psta->has_legacy_ac) && (wmmps_ac))) {
pstapriv->tim_bitmap |= BIT(psta->aid);
if (psta->sleepq_len == 1) {
/* upate BCN for TIM IE */
update_beacon(padapter, _TIM_IE_, NULL, false);
}
}
ret = true;
}
}
spin_unlock_bh(&psta->sleep_q.lock);
return ret;
}
static void dequeue_xmitframes_to_sleeping_queue(struct adapter *padapter, struct sta_info *psta, struct __queue *pframequeue)
{
struct list_head *plist, *phead;
u8 ac_index;
struct tx_servq *ptxservq;
struct pkt_attrib *pattrib;
struct xmit_frame *pxmitframe;
struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits;
phead = get_list_head(pframequeue);
plist = phead->next;
while (phead != plist) {
pxmitframe = container_of(plist, struct xmit_frame, list);
plist = plist->next;
xmitframe_enqueue_for_sleeping_sta(padapter, pxmitframe);
pattrib = &pxmitframe->attrib;
ptxservq = rtw_get_sta_pending(padapter, psta, pattrib->priority, (u8 *)(&ac_index));
ptxservq->qcnt--;
phwxmits[ac_index].accnt--;
}
}
void stop_sta_xmit(struct adapter *padapter, struct sta_info *psta)
{
struct sta_info *psta_bmc;
struct sta_xmit_priv *pstaxmitpriv;
struct sta_priv *pstapriv = &padapter->stapriv;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
pstaxmitpriv = &psta->sta_xmitpriv;
/* for BC/MC Frames */
psta_bmc = rtw_get_bcmc_stainfo(padapter);
spin_lock_bh(&pxmitpriv->lock);
psta->state |= WIFI_SLEEP_STATE;
pstapriv->sta_dz_bitmap |= BIT(psta->aid);
dequeue_xmitframes_to_sleeping_queue(padapter, psta, &pstaxmitpriv->vo_q.sta_pending);
list_del_init(&pstaxmitpriv->vo_q.tx_pending);
dequeue_xmitframes_to_sleeping_queue(padapter, psta, &pstaxmitpriv->vi_q.sta_pending);
list_del_init(&pstaxmitpriv->vi_q.tx_pending);
dequeue_xmitframes_to_sleeping_queue(padapter, psta, &pstaxmitpriv->be_q.sta_pending);
list_del_init(&pstaxmitpriv->be_q.tx_pending);
dequeue_xmitframes_to_sleeping_queue(padapter, psta, &pstaxmitpriv->bk_q.sta_pending);
list_del_init(&pstaxmitpriv->bk_q.tx_pending);
/* for BC/MC Frames */
pstaxmitpriv = &psta_bmc->sta_xmitpriv;
dequeue_xmitframes_to_sleeping_queue(padapter, psta_bmc, &pstaxmitpriv->be_q.sta_pending);
list_del_init(&pstaxmitpriv->be_q.tx_pending);
spin_unlock_bh(&pxmitpriv->lock);
}
void wakeup_sta_to_xmit(struct adapter *padapter, struct sta_info *psta)
{
u8 update_mask = 0, wmmps_ac = 0;
struct sta_info *psta_bmc;
struct list_head *xmitframe_plist, *xmitframe_phead;
struct xmit_frame *pxmitframe = NULL;
struct sta_priv *pstapriv = &padapter->stapriv;
spin_lock_bh(&psta->sleep_q.lock);
xmitframe_phead = get_list_head(&psta->sleep_q);
xmitframe_plist = xmitframe_phead->next;
while (xmitframe_phead != xmitframe_plist) {
pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
xmitframe_plist = xmitframe_plist->next;
list_del_init(&pxmitframe->list);
switch (pxmitframe->attrib.priority) {
case 1:
case 2:
wmmps_ac = psta->uapsd_bk & BIT(1);
break;
case 4:
case 5:
wmmps_ac = psta->uapsd_vi & BIT(1);
break;
case 6:
case 7:
wmmps_ac = psta->uapsd_vo & BIT(1);
break;
case 0:
case 3:
default:
wmmps_ac = psta->uapsd_be & BIT(1);
break;
}
psta->sleepq_len--;
if (psta->sleepq_len > 0)
pxmitframe->attrib.mdata = 1;
else
pxmitframe->attrib.mdata = 0;
if (wmmps_ac) {
psta->sleepq_ac_len--;
if (psta->sleepq_ac_len > 0) {
pxmitframe->attrib.mdata = 1;
pxmitframe->attrib.eosp = 0;
} else {
pxmitframe->attrib.mdata = 0;
pxmitframe->attrib.eosp = 1;
}
}
pxmitframe->attrib.triggered = 1;
spin_unlock_bh(&psta->sleep_q.lock);
if (rtl8188eu_hal_xmit(padapter, pxmitframe))
rtw_os_xmit_complete(padapter, pxmitframe);
spin_lock_bh(&psta->sleep_q.lock);
}
if (psta->sleepq_len == 0) {
pstapriv->tim_bitmap &= ~BIT(psta->aid);
update_mask = BIT(0);
if (psta->state & WIFI_SLEEP_STATE)
psta->state ^= WIFI_SLEEP_STATE;
if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
psta->expire_to = pstapriv->expire_to;
psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
}
pstapriv->sta_dz_bitmap &= ~BIT(psta->aid);
}
spin_unlock_bh(&psta->sleep_q.lock);
/* for BC/MC Frames */
psta_bmc = rtw_get_bcmc_stainfo(padapter);
if (!psta_bmc)
return;
if ((pstapriv->sta_dz_bitmap & 0xfffe) == 0x0) { /* no any sta in ps mode */
spin_lock_bh(&psta_bmc->sleep_q.lock);
xmitframe_phead = get_list_head(&psta_bmc->sleep_q);
xmitframe_plist = xmitframe_phead->next;
while (xmitframe_phead != xmitframe_plist) {
pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
xmitframe_plist = xmitframe_plist->next;
list_del_init(&pxmitframe->list);
psta_bmc->sleepq_len--;
if (psta_bmc->sleepq_len > 0)
pxmitframe->attrib.mdata = 1;
else
pxmitframe->attrib.mdata = 0;
pxmitframe->attrib.triggered = 1;
spin_unlock_bh(&psta_bmc->sleep_q.lock);
if (rtl8188eu_hal_xmit(padapter, pxmitframe))
rtw_os_xmit_complete(padapter, pxmitframe);
spin_lock_bh(&psta_bmc->sleep_q.lock);
}
if (psta_bmc->sleepq_len == 0) {
pstapriv->tim_bitmap &= ~BIT(0);
pstapriv->sta_dz_bitmap &= ~BIT(0);
update_mask |= BIT(1);
}
spin_unlock_bh(&psta_bmc->sleep_q.lock);
}
if (update_mask)
update_beacon(padapter, _TIM_IE_, NULL, false);
}
void xmit_delivery_enabled_frames(struct adapter *padapter, struct sta_info *psta)
{
u8 wmmps_ac = 0;
struct list_head *xmitframe_plist, *xmitframe_phead;
struct xmit_frame *pxmitframe = NULL;
struct sta_priv *pstapriv = &padapter->stapriv;
spin_lock_bh(&psta->sleep_q.lock);
xmitframe_phead = get_list_head(&psta->sleep_q);
xmitframe_plist = xmitframe_phead->next;
while (xmitframe_phead != xmitframe_plist) {
pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
xmitframe_plist = xmitframe_plist->next;
switch (pxmitframe->attrib.priority) {
case 1:
case 2:
wmmps_ac = psta->uapsd_bk & BIT(1);
break;
case 4:
case 5:
wmmps_ac = psta->uapsd_vi & BIT(1);
break;
case 6:
case 7:
wmmps_ac = psta->uapsd_vo & BIT(1);
break;
case 0:
case 3:
default:
wmmps_ac = psta->uapsd_be & BIT(1);
break;
}
if (!wmmps_ac)
continue;
list_del_init(&pxmitframe->list);
psta->sleepq_len--;
psta->sleepq_ac_len--;
if (psta->sleepq_ac_len > 0) {
pxmitframe->attrib.mdata = 1;
pxmitframe->attrib.eosp = 0;
} else {
pxmitframe->attrib.mdata = 0;
pxmitframe->attrib.eosp = 1;
}
pxmitframe->attrib.triggered = 1;
if (rtl8188eu_hal_xmit(padapter, pxmitframe))
rtw_os_xmit_complete(padapter, pxmitframe);
if ((psta->sleepq_ac_len == 0) && (!psta->has_legacy_ac) && (wmmps_ac)) {
pstapriv->tim_bitmap &= ~BIT(psta->aid);
/* upate BCN for TIM IE */
update_beacon(padapter, _TIM_IE_, NULL, false);
}
}
spin_unlock_bh(&psta->sleep_q.lock);
}
void rtw_sctx_init(struct submit_ctx *sctx, int timeout_ms)
{
sctx->timeout_ms = timeout_ms;
sctx->submit_time = jiffies;
init_completion(&sctx->done);
sctx->status = RTW_SCTX_SUBMITTED;
}
int rtw_sctx_wait(struct submit_ctx *sctx)
{
int ret = _FAIL;
unsigned long expire;
int status = 0;
expire = sctx->timeout_ms ? msecs_to_jiffies(sctx->timeout_ms) : MAX_SCHEDULE_TIMEOUT;
if (!wait_for_completion_timeout(&sctx->done, expire))
/* timeout, do something?? */
status = RTW_SCTX_DONE_TIMEOUT;
else
status = sctx->status;
if (status == RTW_SCTX_DONE_SUCCESS)
ret = _SUCCESS;
return ret;
}
void rtw_sctx_done_err(struct submit_ctx **sctx, int status)
{
if (*sctx) {
(*sctx)->status = status;
complete(&((*sctx)->done));
*sctx = NULL;
}
}
int rtw_ack_tx_wait(struct xmit_priv *pxmitpriv, u32 timeout_ms)
{
struct submit_ctx *pack_tx_ops = &pxmitpriv->ack_tx_ops;
pack_tx_ops->submit_time = jiffies;
pack_tx_ops->timeout_ms = timeout_ms;
pack_tx_ops->status = RTW_SCTX_SUBMITTED;
return rtw_sctx_wait(pack_tx_ops);
}
void rtw_ack_tx_done(struct xmit_priv *pxmitpriv, int status)
{
struct submit_ctx *pack_tx_ops = &pxmitpriv->ack_tx_ops;
if (pxmitpriv->ack_tx)
rtw_sctx_done_err(&pack_tx_ops, status);
}
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