static void mlme_calculate_11n_connection_speed(struct ieee80211_node *ni, u_int32_t* rxlinkspeed, u_int32_t* txlinkspeed)
{
struct ieee80211com *ic = ni->ni_ic;
u_int32_t linkspeed; /* bits/sec */
uint32_t shortgi;
u_int8_t tx_streams = ieee80211_getstreams(ic, ic->ic_tx_chainmask);
u_int8_t rx_streams = ieee80211_getstreams(ic, ic->ic_rx_chainmask);
shortgi = ieee80211com_has_htflags(ic, IEEE80211_HTF_SHORTGI40 | IEEE80211_HTF_SHORTGI20);
linkspeed = ic->ic_get_maxphyrate(ic, ni,shortgi) * 1000;
if (linkspeed == 0) {
*txlinkspeed = get_max_phyrate(ic);
*rxlinkspeed = *txlinkspeed;
} else {
*txlinkspeed = linkspeed;
ASSERT(tx_streams <= rx_streams);
/*
* WAR for HB95 (1x1) low DownLink throughput issue. Report higher rx link speed to increase TCP RWIN size.
* For 1x1 and 1x2, we report the rxlinkspeed as double of the txlinkspeed.
*/
if((tx_streams == 1) && (rx_streams == 1)) {
*rxlinkspeed = linkspeed * 2;
} else {
*rxlinkspeed = (linkspeed * rx_streams)/tx_streams;
ASSERT(rx_streams <= 4);
}
}
}
static u_int32_t get_max_phyrate(struct ieee80211com *ic)
{
u_int32_t linkspeed; /* bits/sec */
u_int8_t tx_streams = ieee80211_getstreams(ic, ic->ic_tx_chainmask);
/* 11n card, report highest supported HT rate. */
switch (tx_streams) {
default:
/* Default to single stream */
case 1:
linkspeed = 150000000;
break;
case 2:
linkspeed = 300000000;
break;
case 3:
linkspeed = 450000000;
break;
case 4:
linkspeed = 600000000;
break;
}
return linkspeed;
}
static u_int32_t
ol_ath_node_get_maxphyrate(struct ieee80211com *ic, struct ieee80211_node *ni)
{
u_int8_t mcs;
u_int8_t bw;
struct ieee80211vap *vap = ni->ni_vap;
u_int8_t curr_phy_mode = wlan_get_current_phymode(vap);
enum ieee80211_fixed_rate_mode rate_mode = vap->iv_fixed_rate.mode;
u_int8_t nss = 0;
u_int8_t sgi = 0;
bw = wlan_get_param(vap, IEEE80211_CHWIDTH);
if (ieee80211_vap_get_opmode(vap) == IEEE80211_M_STA) {
if (((ni->ni_htcap & IEEE80211_HTCAP_C_SHORTGI40) && (bw == IEEE80211_CWM_WIDTH40)) ||
((ni->ni_htcap & IEEE80211_HTCAP_C_SHORTGI20) && (bw == IEEE80211_CWM_WIDTH20)) ||
((ni->ni_vhtcap & IEEE80211_VHTCAP_SHORTGI_80) && (bw == IEEE80211_CWM_WIDTH80))) {
sgi = 1;
}
} else {
sgi = wlan_get_param(vap, IEEE80211_SHORT_GI);
}
if (rate_mode != IEEE80211_FIXED_RATE_NONE) {
/* Get rates for fixed rate */
u_int32_t nbps = 0; /*Number of bits per symbol*/
u_int32_t rc; /* rate code*/
u_int32_t i;
/* For fixed rate ensure that SGI is enabled by user */
sgi = vap->iv_data_sgi;
switch (rate_mode)
{
case IEEE80211_FIXED_RATE_MCS:
nss = HT_RC_2_STREAMS(vap->iv_fixed_rateset);
rc = wlan_get_param(vap, IEEE80211_FIXED_RATE);
mcs = (rc & 0x07);
for (i = 0; i < NUM_VHT_HT_RATES; i++) {
if (vht_ht_tbl[i][BW_COL] == bw &&
vht_ht_tbl[i][MCS_COL] == mcs) {
nbps = vht_ht_tbl[i][NBPS_COL];
}
}
break;
case IEEE80211_FIXED_RATE_VHT:
nss = vap->iv_nss;
mcs = wlan_get_param(vap, IEEE80211_FIXED_VHT_MCS);
for (i = 0; i < NUM_VHT_HT_RATES; i++) {
if (vht_ht_tbl[i][BW_COL] == bw &&
vht_ht_tbl[i][MCS_COL] == mcs) {
nbps = vht_ht_tbl[i][NBPS_COL];
}
}
break;
case IEEE80211_FIXED_RATE_LEGACY:
rc = wlan_get_param(vap, IEEE80211_FIXED_RATE);
for (i = 0; i < NUM_LEGACY_RATES; i++) {
if (legacy_rate_idx[i][L_RC_COL] == (rc & 0xff)) {
return legacy_rate_idx[i][L_BPS_COL] * 1000;
}
}
break;
default:
break;
}
if (sgi) {
return (nbps * 5 * 1000 * nss / 18) ;
} else {
return (nbps * 1000 * nss / 4) ;
}
} else {
/* Get rates for auto rate */
nss = ni->ni_streams;
if(ieee80211_vap_get_opmode(vap) == IEEE80211_M_HOSTAP) {
nss = (vap->iv_nss >
ieee80211_getstreams(ic, ic->ic_tx_chainmask)) ?
ieee80211_getstreams(ic, ic->ic_tx_chainmask) :
vap->iv_nss;
}
if ((nss < 1) || (nss > 3)) {
printk("%s : NSS greater than 3 or less than 1!(nss:%d)\n", __func__, nss);
return 0;
}
}
if(ieee80211_vap_256qam_is_set(ni->ni_vap) &&
(((ieee80211_vap_get_opmode(vap) == IEEE80211_M_HOSTAP) && (ic->ic_vhtcap)) ||
((ieee80211_vap_get_opmode(vap) == IEEE80211_M_STA) && (ni->ni_vhtcap)))) {
switch(curr_phy_mode) {
case IEEE80211_MODE_11NG_HT20:
if(((ieee80211_vap_get_opmode(vap) == IEEE80211_M_HOSTAP) &&
!ieee80211_vap_ldpc_is_set(ni->ni_vap)) ||
((ieee80211_vap_get_opmode(vap) == IEEE80211_M_STA) &&
!((ni->ni_htcap & IEEE80211_HTCAP_C_ADVCODING) &&
(ni->ni_vhtcap & IEEE80211_VHTCAP_RX_LDPC)))) {
/*256QAM 2G BCC rateset */
curr_phy_mode = IEEE80211_MODE_11AC_VHT80 + 1;
} else {
/*256 QAM 2G LDPC rateset */
curr_phy_mode = IEEE80211_MODE_11AC_VHT80 + 2;
}
break;
case IEEE80211_MODE_11NG_HT40PLUS:
case IEEE80211_MODE_11NG_HT40MINUS:
case IEEE80211_MODE_11NG_HT40:
/*256 QAM 2G */
curr_phy_mode = IEEE80211_MODE_11AC_VHT80 + 3;
break;
default:
break;
}
}
if (sgi) {
return (max_rates[curr_phy_mode][(nss * 2) - 1] * 10);
} else {
return (max_rates[curr_phy_mode][(nss - 1) * 2] * 10);
}
}
