319 lines
8.0 KiB
C
319 lines
8.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* Copyright(c) 2009-2012 Realtek Corporation.*/
|
|
|
|
#include "wifi.h"
|
|
#include "base.h"
|
|
#include "rc.h"
|
|
|
|
/*
|
|
*Finds the highest rate index we can use
|
|
*if skb is special data like DHCP/EAPOL, we set should
|
|
*it to lowest rate CCK_1M, otherwise we set rate to
|
|
*highest rate based on wireless mode used for iwconfig
|
|
*show Tx rate.
|
|
*/
|
|
static u8 _rtl_rc_get_highest_rix(struct rtl_priv *rtlpriv,
|
|
struct ieee80211_sta *sta,
|
|
struct sk_buff *skb, bool not_data)
|
|
{
|
|
struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
|
|
struct rtl_phy *rtlphy = &(rtlpriv->phy);
|
|
struct rtl_sta_info *sta_entry = NULL;
|
|
u16 wireless_mode = 0;
|
|
u8 nss;
|
|
struct ieee80211_tx_rate rate;
|
|
|
|
switch (get_rf_type(rtlphy)) {
|
|
case RF_4T4R:
|
|
nss = 4;
|
|
break;
|
|
case RF_3T3R:
|
|
nss = 3;
|
|
break;
|
|
case RF_2T2R:
|
|
nss = 2;
|
|
break;
|
|
default:
|
|
nss = 1;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
*this rate is no use for true rate, firmware
|
|
*will control rate at all it just used for
|
|
*1.show in iwconfig in B/G mode
|
|
*2.in rtl_get_tcb_desc when we check rate is
|
|
* 1M we will not use FW rate but user rate.
|
|
*/
|
|
|
|
if (sta) {
|
|
sta_entry = (struct rtl_sta_info *)sta->drv_priv;
|
|
wireless_mode = sta_entry->wireless_mode;
|
|
}
|
|
|
|
if (rtl_is_special_data(rtlpriv->mac80211.hw, skb, true, false) ||
|
|
not_data) {
|
|
return 0;
|
|
} else {
|
|
if (rtlhal->current_bandtype == BAND_ON_2_4G) {
|
|
if (wireless_mode == WIRELESS_MODE_B) {
|
|
return B_MODE_MAX_RIX;
|
|
} else if (wireless_mode == WIRELESS_MODE_G) {
|
|
return G_MODE_MAX_RIX;
|
|
} else if (wireless_mode == WIRELESS_MODE_N_24G) {
|
|
if (nss == 1)
|
|
return N_MODE_MCS7_RIX;
|
|
else
|
|
return N_MODE_MCS15_RIX;
|
|
} else if (wireless_mode == WIRELESS_MODE_AC_24G) {
|
|
if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_20) {
|
|
ieee80211_rate_set_vht(&rate,
|
|
AC_MODE_MCS8_RIX,
|
|
nss);
|
|
goto out;
|
|
} else {
|
|
ieee80211_rate_set_vht(&rate,
|
|
AC_MODE_MCS9_RIX,
|
|
nss);
|
|
goto out;
|
|
}
|
|
}
|
|
return 0;
|
|
} else {
|
|
if (wireless_mode == WIRELESS_MODE_A) {
|
|
return A_MODE_MAX_RIX;
|
|
} else if (wireless_mode == WIRELESS_MODE_N_5G) {
|
|
if (nss == 1)
|
|
return N_MODE_MCS7_RIX;
|
|
else
|
|
return N_MODE_MCS15_RIX;
|
|
} else if (wireless_mode == WIRELESS_MODE_AC_5G) {
|
|
if (sta->deflink.bandwidth == IEEE80211_STA_RX_BW_20) {
|
|
ieee80211_rate_set_vht(&rate,
|
|
AC_MODE_MCS8_RIX,
|
|
nss);
|
|
goto out;
|
|
} else {
|
|
ieee80211_rate_set_vht(&rate,
|
|
AC_MODE_MCS9_RIX,
|
|
nss);
|
|
goto out;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
out:
|
|
return rate.idx;
|
|
}
|
|
|
|
static void _rtl_rc_rate_set_series(struct rtl_priv *rtlpriv,
|
|
struct ieee80211_sta *sta,
|
|
struct ieee80211_tx_rate *rate,
|
|
struct ieee80211_tx_rate_control *txrc,
|
|
u8 tries, s8 rix, int rtsctsenable,
|
|
bool not_data)
|
|
{
|
|
struct rtl_mac *mac = rtl_mac(rtlpriv);
|
|
struct rtl_sta_info *sta_entry = NULL;
|
|
u16 wireless_mode = 0;
|
|
u8 sgi_20 = 0, sgi_40 = 0, sgi_80 = 0;
|
|
|
|
if (sta) {
|
|
sgi_20 = sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
|
|
sgi_40 = sta->deflink.ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
|
|
sgi_80 = sta->deflink.vht_cap.cap & IEEE80211_VHT_CAP_SHORT_GI_80;
|
|
sta_entry = (struct rtl_sta_info *)sta->drv_priv;
|
|
wireless_mode = sta_entry->wireless_mode;
|
|
}
|
|
rate->count = tries;
|
|
rate->idx = rix >= 0x00 ? rix : 0x00;
|
|
|
|
if (!not_data) {
|
|
if (txrc->short_preamble)
|
|
rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
|
|
if (mac->opmode == NL80211_IFTYPE_AP ||
|
|
mac->opmode == NL80211_IFTYPE_ADHOC) {
|
|
if (sta && (sta->deflink.ht_cap.cap &
|
|
IEEE80211_HT_CAP_SUP_WIDTH_20_40))
|
|
rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
|
|
if (sta && sta->deflink.vht_cap.vht_supported)
|
|
rate->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH;
|
|
} else {
|
|
if (mac->bw_80)
|
|
rate->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH;
|
|
else if (mac->bw_40)
|
|
rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
|
|
}
|
|
|
|
if (sgi_20 || sgi_40 || sgi_80)
|
|
rate->flags |= IEEE80211_TX_RC_SHORT_GI;
|
|
if (sta && sta->deflink.ht_cap.ht_supported &&
|
|
(wireless_mode == WIRELESS_MODE_N_5G ||
|
|
wireless_mode == WIRELESS_MODE_N_24G))
|
|
rate->flags |= IEEE80211_TX_RC_MCS;
|
|
if (sta && sta->deflink.vht_cap.vht_supported &&
|
|
(wireless_mode == WIRELESS_MODE_AC_5G ||
|
|
wireless_mode == WIRELESS_MODE_AC_24G ||
|
|
wireless_mode == WIRELESS_MODE_AC_ONLY))
|
|
rate->flags |= IEEE80211_TX_RC_VHT_MCS;
|
|
}
|
|
}
|
|
|
|
static void rtl_get_rate(void *ppriv, struct ieee80211_sta *sta,
|
|
void *priv_sta,
|
|
struct ieee80211_tx_rate_control *txrc)
|
|
{
|
|
struct rtl_priv *rtlpriv = ppriv;
|
|
struct sk_buff *skb = txrc->skb;
|
|
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
|
|
struct ieee80211_tx_rate *rates = tx_info->control.rates;
|
|
__le16 fc = rtl_get_fc(skb);
|
|
u8 try_per_rate, i, rix;
|
|
bool not_data = !ieee80211_is_data(fc);
|
|
|
|
rix = _rtl_rc_get_highest_rix(rtlpriv, sta, skb, not_data);
|
|
try_per_rate = 1;
|
|
_rtl_rc_rate_set_series(rtlpriv, sta, &rates[0], txrc,
|
|
try_per_rate, rix, 1, not_data);
|
|
|
|
if (!not_data) {
|
|
for (i = 1; i < 4; i++)
|
|
_rtl_rc_rate_set_series(rtlpriv, sta, &rates[i],
|
|
txrc, i, (rix - i), 1,
|
|
not_data);
|
|
}
|
|
}
|
|
|
|
static bool _rtl_tx_aggr_check(struct rtl_priv *rtlpriv,
|
|
struct rtl_sta_info *sta_entry, u16 tid)
|
|
{
|
|
struct rtl_mac *mac = rtl_mac(rtlpriv);
|
|
|
|
if (mac->act_scanning)
|
|
return false;
|
|
|
|
if (mac->opmode == NL80211_IFTYPE_STATION &&
|
|
mac->cnt_after_linked < 3)
|
|
return false;
|
|
|
|
if (sta_entry->tids[tid].agg.agg_state == RTL_AGG_STOP)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
/*mac80211 Rate Control callbacks*/
|
|
static void rtl_tx_status(void *ppriv,
|
|
struct ieee80211_supported_band *sband,
|
|
struct ieee80211_sta *sta, void *priv_sta,
|
|
struct sk_buff *skb)
|
|
{
|
|
struct rtl_priv *rtlpriv = ppriv;
|
|
struct rtl_mac *mac = rtl_mac(rtlpriv);
|
|
struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
|
|
__le16 fc = rtl_get_fc(skb);
|
|
struct rtl_sta_info *sta_entry;
|
|
|
|
if (!priv_sta || !ieee80211_is_data(fc))
|
|
return;
|
|
|
|
if (rtl_is_special_data(mac->hw, skb, true, true))
|
|
return;
|
|
|
|
if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
|
|
is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
|
|
return;
|
|
|
|
if (sta) {
|
|
/* Check if aggregation has to be enabled for this tid */
|
|
sta_entry = (struct rtl_sta_info *)sta->drv_priv;
|
|
if (sta->deflink.ht_cap.ht_supported &&
|
|
!(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
|
|
if (ieee80211_is_data_qos(fc)) {
|
|
u8 tid = rtl_get_tid(skb);
|
|
|
|
if (_rtl_tx_aggr_check(rtlpriv, sta_entry,
|
|
tid)) {
|
|
sta_entry->tids[tid].agg.agg_state =
|
|
RTL_AGG_PROGRESS;
|
|
ieee80211_start_tx_ba_session(sta, tid,
|
|
5000);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void rtl_rate_init(void *ppriv,
|
|
struct ieee80211_supported_band *sband,
|
|
struct cfg80211_chan_def *chandef,
|
|
struct ieee80211_sta *sta, void *priv_sta)
|
|
{
|
|
}
|
|
|
|
static void rtl_rate_update(void *ppriv,
|
|
struct ieee80211_supported_band *sband,
|
|
struct cfg80211_chan_def *chandef,
|
|
struct ieee80211_sta *sta, void *priv_sta,
|
|
u32 changed)
|
|
{
|
|
}
|
|
|
|
static void *rtl_rate_alloc(struct ieee80211_hw *hw)
|
|
{
|
|
struct rtl_priv *rtlpriv = rtl_priv(hw);
|
|
return rtlpriv;
|
|
}
|
|
|
|
static void rtl_rate_free(void *rtlpriv)
|
|
{
|
|
return;
|
|
}
|
|
|
|
static void *rtl_rate_alloc_sta(void *ppriv,
|
|
struct ieee80211_sta *sta, gfp_t gfp)
|
|
{
|
|
struct rtl_priv *rtlpriv = ppriv;
|
|
struct rtl_rate_priv *rate_priv;
|
|
|
|
rate_priv = kzalloc(sizeof(*rate_priv), gfp);
|
|
if (!rate_priv)
|
|
return NULL;
|
|
|
|
rtlpriv->rate_priv = rate_priv;
|
|
|
|
return rate_priv;
|
|
}
|
|
|
|
static void rtl_rate_free_sta(void *rtlpriv,
|
|
struct ieee80211_sta *sta, void *priv_sta)
|
|
{
|
|
struct rtl_rate_priv *rate_priv = priv_sta;
|
|
|
|
kfree(rate_priv);
|
|
}
|
|
|
|
static const struct rate_control_ops rtl_rate_ops = {
|
|
.name = "rtl_rc",
|
|
.alloc = rtl_rate_alloc,
|
|
.free = rtl_rate_free,
|
|
.alloc_sta = rtl_rate_alloc_sta,
|
|
.free_sta = rtl_rate_free_sta,
|
|
.rate_init = rtl_rate_init,
|
|
.rate_update = rtl_rate_update,
|
|
.tx_status = rtl_tx_status,
|
|
.get_rate = rtl_get_rate,
|
|
};
|
|
|
|
int rtl_rate_control_register(void)
|
|
{
|
|
return ieee80211_rate_control_register(&rtl_rate_ops);
|
|
}
|
|
|
|
void rtl_rate_control_unregister(void)
|
|
{
|
|
ieee80211_rate_control_unregister(&rtl_rate_ops);
|
|
}
|