2021-07-21 17:37:52

by Jouni Malinen

[permalink] [raw]
Subject: [PATCH 1/2] ath11k: add support for setting fixed HE rate/gi/ltf

From: Miles Hu <[email protected]>

Support setting fixed HE rate/gi/ltf values that we are now able to send
to the kernel using nl80211. The added code is reusing parts of the
existing code path already used for HT/VHT. The new helpers are
symmetric to how we do it for HT/VHT.

Tested-on: IPQ8074 hw2.0 AHB WLAN.HK.2.5.0.1-00235-QCAHKSWPL_SILICONZ-1

Signed-off-by: Miles Hu <[email protected]>
Co-developed-by: Aloka Dixit <[email protected]>
Signed-off-by: Aloka Dixit <[email protected]>
Co-developed-by: Lavanya Suresh <[email protected]>
Signed-off-by: Lavanya Suresh <[email protected]>
Co-developed-by: Pradeep Chitrapu <[email protected]>
Signed-off-by: Pradeep Chitrapu <[email protected]>
Signed-off-by: Venkateswara Naralasetty <[email protected]>
Signed-off-by: Jouni Malinen <[email protected]>
---
drivers/net/wireless/ath/ath11k/mac.c | 586 ++++++++++++++++++++++++--
drivers/net/wireless/ath/ath11k/wmi.c | 4 +-
drivers/net/wireless/ath/ath11k/wmi.h | 20 +
3 files changed, 570 insertions(+), 40 deletions(-)

diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index b9d4e8914482..4dcc1b377642 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -354,6 +354,18 @@ ath11k_mac_max_vht_nss(const u16 vht_mcs_mask[NL80211_VHT_NSS_MAX])
return 1;
}

+static u32
+ath11k_mac_max_he_nss(const u16 he_mcs_mask[NL80211_HE_NSS_MAX])
+{
+ int nss;
+
+ for (nss = NL80211_HE_NSS_MAX - 1; nss >= 0; nss--)
+ if (he_mcs_mask[nss])
+ return nss + 1;
+
+ return 1;
+}
+
static u8 ath11k_parse_mpdudensity(u8 mpdudensity)
{
/* 802.11n D2.0 defined values for "Minimum MPDU Start Spacing":
@@ -1391,6 +1403,14 @@ static void ath11k_peer_assoc_h_ht(struct ath11k *ar,
arg->peer_rate_caps |= WMI_HOST_RC_CW40_FLAG;
}

+ /* As firmware handles this two flags (IEEE80211_HT_CAP_SGI_20
+ * and IEEE80211_HT_CAP_SGI_40) for enabling SGI, we reset
+ * both flags if guard interval is Default GI
+ */
+ if (arvif->bitrate_mask.control[band].gi == NL80211_TXRATE_DEFAULT_GI)
+ arg->peer_ht_caps &= ~(IEEE80211_HT_CAP_SGI_20 |
+ IEEE80211_HT_CAP_SGI_40);
+
if (arvif->bitrate_mask.control[band].gi != NL80211_TXRATE_FORCE_LGI) {
if (ht_cap->cap & (IEEE80211_HT_CAP_SGI_20 |
IEEE80211_HT_CAP_SGI_40))
@@ -1514,10 +1534,11 @@ static void ath11k_peer_assoc_h_vht(struct ath11k *ar,
struct ath11k_vif *arvif = (void *)vif->drv_priv;
struct cfg80211_chan_def def;
enum nl80211_band band;
- const u16 *vht_mcs_mask;
+ u16 *vht_mcs_mask;
u8 ampdu_factor;
u8 max_nss, vht_mcs;
- int i;
+ int i, vht_nss, nss_idx;
+ bool user_rate_valid = true;

if (WARN_ON(ath11k_mac_vif_chan(vif, &def)))
return;
@@ -1560,6 +1581,24 @@ static void ath11k_peer_assoc_h_vht(struct ath11k *ar,
if (sta->bandwidth == IEEE80211_STA_RX_BW_160)
arg->bw_160 = true;

+ vht_nss = ath11k_mac_max_vht_nss(vht_mcs_mask);
+
+ if (vht_nss > sta->rx_nss) {
+ user_rate_valid = false;
+ for (nss_idx = sta->rx_nss - 1; nss_idx >= 0; nss_idx--) {
+ if (vht_mcs_mask[nss_idx]) {
+ user_rate_valid = true;
+ break;
+ }
+ }
+ }
+
+ if (!user_rate_valid) {
+ ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "Setting vht range MCS value to peer supported nss:%d for peer %pM\n",
+ sta->rx_nss, sta->addr);
+ vht_mcs_mask[sta->rx_nss - 1] = vht_mcs_mask[vht_nss - 1];
+ }
+
/* Calculate peer NSS capability from VHT capabilities if STA
* supports VHT.
*/
@@ -1598,18 +1637,100 @@ static void ath11k_peer_assoc_h_vht(struct ath11k *ar,
/* TODO: rxnss_override */
}

+static int ath11k_mac_get_max_he_mcs_map(u16 mcs_map, int nss)
+{
+ switch ((mcs_map >> (2 * nss)) & 0x3) {
+ case IEEE80211_HE_MCS_SUPPORT_0_7: return BIT(8) - 1;
+ case IEEE80211_HE_MCS_SUPPORT_0_9: return BIT(10) - 1;
+ case IEEE80211_HE_MCS_SUPPORT_0_11: return BIT(12) - 1;
+ }
+ return 0;
+}
+
+static u16 ath11k_peer_assoc_h_he_limit(u16 tx_mcs_set,
+ const u16 he_mcs_limit[NL80211_HE_NSS_MAX])
+{
+ int idx_limit;
+ int nss;
+ u16 mcs_map;
+ u16 mcs;
+
+ for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) {
+ mcs_map = ath11k_mac_get_max_he_mcs_map(tx_mcs_set, nss) &
+ he_mcs_limit[nss];
+
+ if (mcs_map)
+ idx_limit = fls(mcs_map) - 1;
+ else
+ idx_limit = -1;
+
+ switch (idx_limit) {
+ case 0 ... 7:
+ mcs = IEEE80211_HE_MCS_SUPPORT_0_7;
+ break;
+ case 8:
+ case 9:
+ mcs = IEEE80211_HE_MCS_SUPPORT_0_9;
+ break;
+ case 10:
+ case 11:
+ mcs = IEEE80211_HE_MCS_SUPPORT_0_11;
+ break;
+ default:
+ WARN_ON(1);
+ fallthrough;
+ case -1:
+ mcs = IEEE80211_HE_MCS_NOT_SUPPORTED;
+ break;
+ }
+
+ tx_mcs_set &= ~(0x3 << (nss * 2));
+ tx_mcs_set |= mcs << (nss * 2);
+ }
+
+ return tx_mcs_set;
+}
+
+static bool
+ath11k_peer_assoc_h_he_masked(const u16 he_mcs_mask[NL80211_HE_NSS_MAX])
+{
+ int nss;
+
+ for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++)
+ if (he_mcs_mask[nss])
+ return false;
+
+ return true;
+}
+
static void ath11k_peer_assoc_h_he(struct ath11k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
struct peer_assoc_params *arg)
{
+ struct ath11k_vif *arvif = (void *)vif->drv_priv;
+ struct cfg80211_chan_def def;
const struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
u8 ampdu_factor;
- u16 v;
+ enum nl80211_band band;
+ u16 *he_mcs_mask;
+ u8 max_nss, he_mcs;
+ u16 he_tx_mcs = 0, v = 0;
+ int i, he_nss, nss_idx;
+ bool user_rate_valid = true;
+
+ if (WARN_ON(ath11k_mac_vif_chan(vif, &def)))
+ return;

if (!he_cap->has_he)
return;

+ band = def.chan->band;
+ he_mcs_mask = arvif->bitrate_mask.control[band].he_mcs;
+
+ if (ath11k_peer_assoc_h_he_masked(he_mcs_mask))
+ return;
+
arg->he_flag = true;

memcpy_and_pad(&arg->peer_he_cap_macinfo,
@@ -1686,25 +1807,48 @@ static void ath11k_peer_assoc_h_he(struct ath11k *ar,
if (he_cap->he_cap_elem.mac_cap_info[0] & IEEE80211_HE_MAC_CAP0_TWT_REQ)
arg->twt_requester = true;

+ he_nss = ath11k_mac_max_he_nss(he_mcs_mask);
+
+ if (he_nss > sta->rx_nss) {
+ user_rate_valid = false;
+ for (nss_idx = sta->rx_nss - 1; nss_idx >= 0; nss_idx--) {
+ if (he_mcs_mask[nss_idx]) {
+ user_rate_valid = true;
+ break;
+ }
+ }
+ }
+
+ if (!user_rate_valid) {
+ ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "Setting he range MCS value to peer supported nss:%d for peer %pM\n",
+ sta->rx_nss, sta->addr);
+ he_mcs_mask[sta->rx_nss - 1] = he_mcs_mask[he_nss - 1];
+ }
+
switch (sta->bandwidth) {
case IEEE80211_STA_RX_BW_160:
if (he_cap->he_cap_elem.phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G) {
v = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80p80);
+ v = ath11k_peer_assoc_h_he_limit(v, he_mcs_mask);
arg->peer_he_rx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80_80] = v;

v = le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80p80);
arg->peer_he_tx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80_80] = v;

arg->peer_he_mcs_count++;
+ he_tx_mcs = v;
}
v = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
arg->peer_he_rx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_160] = v;

v = le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_160);
+ v = ath11k_peer_assoc_h_he_limit(v, he_mcs_mask);
arg->peer_he_tx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_160] = v;

arg->peer_he_mcs_count++;
+ if (!he_tx_mcs)
+ he_tx_mcs = v;
fallthrough;

default:
@@ -1712,11 +1856,34 @@ static void ath11k_peer_assoc_h_he(struct ath11k *ar,
arg->peer_he_rx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80] = v;

v = le16_to_cpu(he_cap->he_mcs_nss_supp.tx_mcs_80);
+ v = ath11k_peer_assoc_h_he_limit(v, he_mcs_mask);
arg->peer_he_tx_mcs_set[WMI_HECAP_TXRX_MCS_NSS_IDX_80] = v;

arg->peer_he_mcs_count++;
+ if (!he_tx_mcs)
+ he_tx_mcs = v;
break;
}
+
+ /* Calculate peer NSS capability from HE capabilities if STA
+ * supports HE.
+ */
+ for (i = 0, max_nss = 0, he_mcs = 0; i < NL80211_HE_NSS_MAX; i++) {
+ he_mcs = he_tx_mcs >> (2 * i) & 3;
+
+ /* In case of fixed rates, MCS Range in he_tx_mcs might have
+ * unsupported range, with he_mcs_mask set, so check either of them
+ * to find nss.
+ */
+ if (he_mcs != IEEE80211_HE_MCS_NOT_SUPPORTED ||
+ he_mcs_mask[i])
+ max_nss = i + 1;
+ }
+ arg->peer_nss = min(sta->rx_nss, max_nss);
+
+ ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
+ "mac he peer %pM nss %d mcs cnt %d\n",
+ sta->addr, arg->peer_nss, arg->peer_he_mcs_count);
}

static void ath11k_peer_assoc_h_smps(struct ieee80211_sta *sta,
@@ -1919,6 +2086,7 @@ static void ath11k_peer_assoc_h_phymode(struct ath11k *ar,
enum nl80211_band band;
const u8 *ht_mcs_mask;
const u16 *vht_mcs_mask;
+ const u16 *he_mcs_mask;
enum wmi_phy_mode phymode = MODE_UNKNOWN;

if (WARN_ON(ath11k_mac_vif_chan(vif, &def)))
@@ -1927,10 +2095,12 @@ static void ath11k_peer_assoc_h_phymode(struct ath11k *ar,
band = def.chan->band;
ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs;
vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;
+ he_mcs_mask = arvif->bitrate_mask.control[band].he_mcs;

switch (band) {
case NL80211_BAND_2GHZ:
- if (sta->he_cap.has_he) {
+ if (sta->he_cap.has_he &&
+ !ath11k_peer_assoc_h_he_masked(he_mcs_mask)) {
if (sta->bandwidth == IEEE80211_STA_RX_BW_80)
phymode = MODE_11AX_HE80_2G;
else if (sta->bandwidth == IEEE80211_STA_RX_BW_40)
@@ -1958,7 +2128,8 @@ static void ath11k_peer_assoc_h_phymode(struct ath11k *ar,
case NL80211_BAND_5GHZ:
case NL80211_BAND_6GHZ:
/* Check HE first */
- if (sta->he_cap.has_he) {
+ if (sta->he_cap.has_he &&
+ !ath11k_peer_assoc_h_he_masked(he_mcs_mask)) {
phymode = ath11k_mac_get_phymode_he(ar, sta);
} else if (sta->vht_cap.vht_supported &&
!ath11k_peer_assoc_h_vht_masked(vht_mcs_mask)) {
@@ -3184,6 +3355,20 @@ ath11k_mac_bitrate_mask_num_vht_rates(struct ath11k *ar,
return num_rates;
}

+static int
+ath11k_mac_bitrate_mask_num_he_rates(struct ath11k *ar,
+ enum nl80211_band band,
+ const struct cfg80211_bitrate_mask *mask)
+{
+ int num_rates = 0;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mask->control[band].he_mcs); i++)
+ num_rates += hweight16(mask->control[band].he_mcs[i]);
+
+ return num_rates;
+}
+
static int
ath11k_mac_set_peer_vht_fixed_rate(struct ath11k_vif *arvif,
struct ieee80211_sta *sta,
@@ -3212,6 +3397,10 @@ ath11k_mac_set_peer_vht_fixed_rate(struct ath11k_vif *arvif,
return -EINVAL;
}

+ /* Avoid updating invalid nss as fixed rate*/
+ if (nss > sta->rx_nss)
+ return -EINVAL;
+
ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
"Setting Fixed VHT Rate for peer %pM. Device will not switch to any other selected rates",
sta->addr);
@@ -3230,6 +3419,57 @@ ath11k_mac_set_peer_vht_fixed_rate(struct ath11k_vif *arvif,
return ret;
}

+static int
+ath11k_mac_set_peer_he_fixed_rate(struct ath11k_vif *arvif,
+ struct ieee80211_sta *sta,
+ const struct cfg80211_bitrate_mask *mask,
+ enum nl80211_band band)
+{
+ struct ath11k *ar = arvif->ar;
+ u8 he_rate, nss;
+ u32 rate_code;
+ int ret, i;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ nss = 0;
+
+ for (i = 0; i < ARRAY_SIZE(mask->control[band].he_mcs); i++) {
+ if (hweight16(mask->control[band].he_mcs[i]) == 1) {
+ nss = i + 1;
+ he_rate = ffs(mask->control[band].he_mcs[i]) - 1;
+ }
+ }
+
+ if (!nss) {
+ ath11k_warn(ar->ab, "No single HE Fixed rate found to set for %pM",
+ sta->addr);
+ return -EINVAL;
+ }
+
+ /* Avoid updating invalid nss as fixed rate*/
+ if (nss > sta->rx_nss)
+ return -EINVAL;
+
+ ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
+ "Setting Fixed HE Rate for peer %pM. Device will not switch to any other selected rates",
+ sta->addr);
+
+ rate_code = ATH11K_HW_RATE_CODE(he_rate, nss - 1,
+ WMI_RATE_PREAMBLE_HE);
+
+ ret = ath11k_wmi_set_peer_param(ar, sta->addr,
+ arvif->vdev_id,
+ WMI_PEER_PARAM_FIXED_RATE,
+ rate_code);
+ if (ret)
+ ath11k_warn(ar->ab,
+ "failed to update STA %pM Fixed Rate %d: %d\n",
+ sta->addr, rate_code, ret);
+
+ return ret;
+}
+
static int ath11k_station_assoc(struct ath11k *ar,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
@@ -3241,7 +3481,7 @@ static int ath11k_station_assoc(struct ath11k *ar,
struct cfg80211_chan_def def;
enum nl80211_band band;
struct cfg80211_bitrate_mask *mask;
- u8 num_vht_rates;
+ u8 num_vht_rates, num_he_rates;

lockdep_assert_held(&ar->conf_mutex);

@@ -3267,9 +3507,10 @@ static int ath11k_station_assoc(struct ath11k *ar,
}

num_vht_rates = ath11k_mac_bitrate_mask_num_vht_rates(ar, band, mask);
+ num_he_rates = ath11k_mac_bitrate_mask_num_he_rates(ar, band, mask);

- /* If single VHT rate is configured (by set_bitrate_mask()),
- * peer_assoc will disable VHT. This is now enabled by a peer specific
+ /* If single VHT/HE rate is configured (by set_bitrate_mask()),
+ * peer_assoc will disable VHT/HE. This is now enabled by a peer specific
* fixed param.
* Note that all other rates and NSS will be disabled for this peer.
*/
@@ -3278,6 +3519,11 @@ static int ath11k_station_assoc(struct ath11k *ar,
band);
if (ret)
return ret;
+ } else if (sta->he_cap.has_he && num_he_rates == 1) {
+ ret = ath11k_mac_set_peer_he_fixed_rate(arvif, sta, mask,
+ band);
+ if (ret)
+ return ret;
}

/* Re-assoc is run only to update supported rates for given station. It
@@ -3348,8 +3594,9 @@ static void ath11k_sta_rc_update_wk(struct work_struct *wk)
enum nl80211_band band;
const u8 *ht_mcs_mask;
const u16 *vht_mcs_mask;
+ const u16 *he_mcs_mask;
u32 changed, bw, nss, smps;
- int err, num_vht_rates;
+ int err, num_vht_rates, num_he_rates;
const struct cfg80211_bitrate_mask *mask;
struct peer_assoc_params peer_arg;

@@ -3364,6 +3611,7 @@ static void ath11k_sta_rc_update_wk(struct work_struct *wk)
band = def.chan->band;
ht_mcs_mask = arvif->bitrate_mask.control[band].ht_mcs;
vht_mcs_mask = arvif->bitrate_mask.control[band].vht_mcs;
+ he_mcs_mask = arvif->bitrate_mask.control[band].he_mcs;

spin_lock_bh(&ar->data_lock);

@@ -3379,8 +3627,9 @@ static void ath11k_sta_rc_update_wk(struct work_struct *wk)
mutex_lock(&ar->conf_mutex);

nss = max_t(u32, 1, nss);
- nss = min(nss, max(ath11k_mac_max_ht_nss(ht_mcs_mask),
- ath11k_mac_max_vht_nss(vht_mcs_mask)));
+ nss = min(nss, max(max(ath11k_mac_max_ht_nss(ht_mcs_mask),
+ ath11k_mac_max_vht_nss(vht_mcs_mask)),
+ ath11k_mac_max_he_nss(he_mcs_mask)));

if (changed & IEEE80211_RC_BW_CHANGED) {
err = ath11k_wmi_set_peer_param(ar, sta->addr, arvif->vdev_id,
@@ -3416,6 +3665,8 @@ static void ath11k_sta_rc_update_wk(struct work_struct *wk)
mask = &arvif->bitrate_mask;
num_vht_rates = ath11k_mac_bitrate_mask_num_vht_rates(ar, band,
mask);
+ num_he_rates = ath11k_mac_bitrate_mask_num_he_rates(ar, band,
+ mask);

/* Peer_assoc_prepare will reject vht rates in
* bitrate_mask if its not available in range format and
@@ -3431,11 +3682,25 @@ static void ath11k_sta_rc_update_wk(struct work_struct *wk)
if (sta->vht_cap.vht_supported && num_vht_rates == 1) {
ath11k_mac_set_peer_vht_fixed_rate(arvif, sta, mask,
band);
+ } else if (sta->he_cap.has_he && num_he_rates == 1) {
+ ath11k_mac_set_peer_he_fixed_rate(arvif, sta, mask,
+ band);
} else {
- /* If the peer is non-VHT or no fixed VHT rate
+ /* If the peer is non-VHT/HE or no fixed VHT/HE rate
* is provided in the new bitrate mask we set the
- * other rates using peer_assoc command.
+ * other rates using peer_assoc command. Also clear
+ * the peer fixed rate settings as it has higher proprity
+ * than peer assoc
*/
+ err = ath11k_wmi_set_peer_param(ar, sta->addr,
+ arvif->vdev_id,
+ WMI_PEER_PARAM_FIXED_RATE,
+ WMI_FIXED_RATE_NONE);
+ if (err)
+ ath11k_warn(ar->ab,
+ "failed to disable peer fixed rate for STA %pM ret %d\n",
+ sta->addr, err);
+
ath11k_peer_assoc_prepare(ar, arvif->vif, sta,
&peer_arg, true);

@@ -5045,10 +5310,13 @@ static int ath11k_mac_op_add_interface(struct ieee80211_hw *hw,

for (i = 0; i < ARRAY_SIZE(arvif->bitrate_mask.control); i++) {
arvif->bitrate_mask.control[i].legacy = 0xffffffff;
+ arvif->bitrate_mask.control[i].gi = NL80211_TXRATE_FORCE_SGI;
memset(arvif->bitrate_mask.control[i].ht_mcs, 0xff,
sizeof(arvif->bitrate_mask.control[i].ht_mcs));
memset(arvif->bitrate_mask.control[i].vht_mcs, 0xff,
sizeof(arvif->bitrate_mask.control[i].vht_mcs));
+ memset(arvif->bitrate_mask.control[i].he_mcs, 0xff,
+ sizeof(arvif->bitrate_mask.control[i].he_mcs));
}

bit = __ffs64(ab->free_vdev_map);
@@ -6086,9 +6354,26 @@ ath11k_mac_has_single_legacy_rate(struct ath11k *ar,
if (ath11k_mac_bitrate_mask_num_vht_rates(ar, band, mask))
return false;

+ if (ath11k_mac_bitrate_mask_num_he_rates(ar, band, mask))
+ return false;
+
return num_rates == 1;
}

+static __le16
+ath11k_mac_get_tx_mcs_map(const struct ieee80211_sta_he_cap *he_cap)
+{
+ if (he_cap->he_cap_elem.phy_cap_info[0] &
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G)
+ return he_cap->he_mcs_nss_supp.tx_mcs_80p80;
+
+ if (he_cap->he_cap_elem.phy_cap_info[0] &
+ IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G)
+ return he_cap->he_mcs_nss_supp.tx_mcs_160;
+
+ return he_cap->he_mcs_nss_supp.tx_mcs_80;
+}
+
static bool
ath11k_mac_bitrate_mask_get_single_nss(struct ath11k *ar,
enum nl80211_band band,
@@ -6097,8 +6382,10 @@ ath11k_mac_bitrate_mask_get_single_nss(struct ath11k *ar,
{
struct ieee80211_supported_band *sband = &ar->mac.sbands[band];
u16 vht_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
+ u16 he_mcs_map = 0;
u8 ht_nss_mask = 0;
u8 vht_nss_mask = 0;
+ u8 he_nss_mask = 0;
int i;

/* No need to consider legacy here. Basic rates are always present
@@ -6125,7 +6412,20 @@ ath11k_mac_bitrate_mask_get_single_nss(struct ath11k *ar,
return false;
}

- if (ht_nss_mask != vht_nss_mask)
+ he_mcs_map = le16_to_cpu(ath11k_mac_get_tx_mcs_map(&sband->iftype_data->he_cap));
+
+ for (i = 0; i < ARRAY_SIZE(mask->control[band].he_mcs); i++) {
+ if (mask->control[band].he_mcs[i] == 0)
+ continue;
+
+ if (mask->control[band].he_mcs[i] ==
+ ath11k_mac_get_max_he_mcs_map(he_mcs_map, i))
+ he_nss_mask |= BIT(i);
+ else
+ return false;
+ }
+
+ if (ht_nss_mask != vht_nss_mask || ht_nss_mask != he_nss_mask)
return false;

if (ht_nss_mask == 0)
@@ -6172,42 +6472,128 @@ ath11k_mac_get_single_legacy_rate(struct ath11k *ar,
return 0;
}

-static int ath11k_mac_set_fixed_rate_params(struct ath11k_vif *arvif,
- u32 rate, u8 nss, u8 sgi, u8 ldpc)
+static int
+ath11k_mac_set_fixed_rate_GI_LTF(struct ath11k_vif *arvif, u8 he_gi, u8 he_ltf)
{
struct ath11k *ar = arvif->ar;
- u32 vdev_param;
int ret;

- lockdep_assert_held(&ar->conf_mutex);
+ /* 0.8 = 0, 1.6 = 2 and 3.2 = 3. */
+ if (he_gi && he_gi != 0xFF)
+ he_gi += 1;

- ath11k_dbg(ar->ab, ATH11K_DBG_MAC, "mac set fixed rate params vdev %i rate 0x%02x nss %u sgi %u\n",
- arvif->vdev_id, rate, nss, sgi);
+ ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+ WMI_VDEV_PARAM_SGI, he_gi);
+ if (ret) {
+ ath11k_warn(ar->ab, "failed to set HE GI:%d, error:%d\n",
+ he_gi, ret);
+ return ret;
+ }
+ /* start from 1 */
+ if (he_ltf != 0xFF)
+ he_ltf += 1;

- vdev_param = WMI_VDEV_PARAM_FIXED_RATE;
ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
- vdev_param, rate);
+ WMI_VDEV_PARAM_HE_LTF, he_ltf);
if (ret) {
- ath11k_warn(ar->ab, "failed to set fixed rate param 0x%02x: %d\n",
- rate, ret);
+ ath11k_warn(ar->ab, "failed to set HE LTF:%d, error:%d\n",
+ he_ltf, ret);
return ret;
}

- vdev_param = WMI_VDEV_PARAM_NSS;
+ return 0;
+}
+
+static int
+ath11k_mac_set_auto_rate_GI_LTF(struct ath11k_vif *arvif, u16 he_gi, u8 he_ltf)
+{
+ struct ath11k *ar = arvif->ar;
+ int ret;
+ u32 he_ar_gi_ltf = 0;
+
+ if (he_gi != 0xFF) {
+ switch (he_gi) {
+ case NL80211_RATE_INFO_HE_GI_0_8:
+ he_gi = WMI_AUTORATE_800NS_GI;
+ break;
+ case NL80211_RATE_INFO_HE_GI_1_6:
+ he_gi = WMI_AUTORATE_1600NS_GI;
+ break;
+ case NL80211_RATE_INFO_HE_GI_3_2:
+ he_gi = WMI_AUTORATE_3200NS_GI;
+ break;
+ default:
+ ath11k_warn(ar->ab, "Invalid GI\n");
+ return -EINVAL;
+ }
+ }
+
+ if (he_ltf != 0xFF) {
+ switch (he_ltf) {
+ case NL80211_RATE_INFO_HE_1XLTF:
+ he_ltf = WMI_HE_AUTORATE_LTF_1X;
+ break;
+ case NL80211_RATE_INFO_HE_2XLTF:
+ he_ltf = WMI_HE_AUTORATE_LTF_2X;
+ break;
+ case NL80211_RATE_INFO_HE_4XLTF:
+ he_ltf = WMI_HE_AUTORATE_LTF_4X;
+ break;
+ default:
+ ath11k_warn(ar->ab, "Invalid LTF\n");
+ return -EINVAL;
+ }
+ }
+
+ he_ar_gi_ltf = he_gi | he_ltf;
ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
- vdev_param, nss);
+ WMI_VDEV_PARAM_AUTORATE_MISC_CFG,
+ he_ar_gi_ltf);
if (ret) {
- ath11k_warn(ar->ab, "failed to set nss param %d: %d\n",
- nss, ret);
+ ath11k_warn(ar->ab,
+ "failed to set HE autorate GI:%u, LTF:%u params, error:%d\n",
+ he_gi, he_ltf, ret);
return ret;
}

- vdev_param = WMI_VDEV_PARAM_SGI;
+ return 0;
+}
+
+static int ath11k_mac_set_rate_params(struct ath11k_vif *arvif,
+ u32 rate, u8 nss, u8 sgi, u8 ldpc,
+ u8 he_gi, u8 he_ltf, bool he_fixed_rate)
+{
+ struct ath11k *ar = arvif->ar;
+ u32 vdev_param;
+ int ret;
+
+ lockdep_assert_held(&ar->conf_mutex);
+
+ ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
+ "mac set rate params vdev %i, rate:0x%02x, nss:0x%02x, sgi:0x%02x, ldpc:0x%02x\n",
+ arvif->vdev_id, rate, nss, sgi, ldpc);
+
+ ath11k_dbg(ar->ab, ATH11K_DBG_MAC,
+ "he_gi:0x%02x, he_ltf:0x%02x, he_fixed_rate:%d\n", he_gi,
+ he_ltf, he_fixed_rate);
+
+ if (!arvif->vif->bss_conf.he_support) {
+ vdev_param = WMI_VDEV_PARAM_FIXED_RATE;
+ ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+ vdev_param, rate);
+ if (ret) {
+ ath11k_warn(ar->ab, "failed to set fixed rate param 0x%02x: %d\n",
+ rate, ret);
+ return ret;
+ }
+ }
+
+ vdev_param = WMI_VDEV_PARAM_NSS;
ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
- vdev_param, sgi);
+ vdev_param, nss);
if (ret) {
- ath11k_warn(ar->ab, "failed to set sgi param %d: %d\n",
- sgi, ret);
+ ath11k_warn(ar->ab, "failed to set nss param %d: %d\n",
+ nss, ret);
return ret;
}

@@ -6220,6 +6606,27 @@ static int ath11k_mac_set_fixed_rate_params(struct ath11k_vif *arvif,
return ret;
}

+ if (arvif->vif->bss_conf.he_support) {
+ if (he_fixed_rate) {
+ ret = ath11k_mac_set_fixed_rate_GI_LTF(arvif, he_gi,
+ he_ltf);
+ } else {
+ ret = ath11k_mac_set_auto_rate_GI_LTF(arvif, he_gi,
+ he_ltf);
+ }
+ if (ret)
+ return ret;
+ } else {
+ vdev_param = WMI_VDEV_PARAM_SGI;
+ ret = ath11k_wmi_vdev_set_param_cmd(ar, arvif->vdev_id,
+ vdev_param, sgi);
+ if (ret) {
+ ath11k_warn(ar->ab, "failed to set sgi param %d: %d\n",
+ sgi, ret);
+ return ret;
+ }
+ }
+
return 0;
}

@@ -6248,6 +6655,31 @@ ath11k_mac_vht_mcs_range_present(struct ath11k *ar,
return true;
}

+static bool
+ath11k_mac_he_mcs_range_present(struct ath11k *ar,
+ enum nl80211_band band,
+ const struct cfg80211_bitrate_mask *mask)
+{
+ int i;
+ u16 he_mcs;
+
+ for (i = 0; i < NL80211_HE_NSS_MAX; i++) {
+ he_mcs = mask->control[band].he_mcs[i];
+
+ switch (he_mcs) {
+ case 0:
+ case BIT(8) - 1:
+ case BIT(10) - 1:
+ case BIT(12) - 1:
+ break;
+ default:
+ return false;
+ }
+ }
+
+ return true;
+}
+
static void ath11k_mac_set_bitrate_mask_iter(void *data,
struct ieee80211_sta *sta)
{
@@ -6279,6 +6711,53 @@ static void ath11k_mac_disable_peer_fixed_rate(void *data,
sta->addr, ret);
}

+static bool
+ath11k_mac_validate_vht_he_fixed_rate_settings(struct ath11k *ar, enum nl80211_band band,
+ const struct cfg80211_bitrate_mask *mask)
+{
+ bool he_fixed_rate = false, vht_fixed_rate = false;
+ struct ath11k_peer *peer, *tmp;
+ const u16 *vht_mcs_mask, *he_mcs_mask;
+ u8 vht_nss, he_nss;
+ bool ret = true;
+
+ vht_mcs_mask = mask->control[band].vht_mcs;
+ he_mcs_mask = mask->control[band].he_mcs;
+
+ if (ath11k_mac_bitrate_mask_num_vht_rates(ar, band, mask) == 1)
+ vht_fixed_rate = true;
+
+ if (ath11k_mac_bitrate_mask_num_he_rates(ar, band, mask) == 1)
+ he_fixed_rate = true;
+
+ if (!vht_fixed_rate && !he_fixed_rate)
+ return true;
+
+ vht_nss = ath11k_mac_max_vht_nss(vht_mcs_mask);
+ he_nss = ath11k_mac_max_he_nss(he_mcs_mask);
+
+ rcu_read_lock();
+ spin_lock_bh(&ar->ab->base_lock);
+ list_for_each_entry_safe(peer, tmp, &ar->ab->peers, list) {
+ if (peer->sta) {
+ if (vht_fixed_rate && (!peer->sta->vht_cap.vht_supported ||
+ peer->sta->rx_nss < vht_nss)) {
+ ret = false;
+ goto exit;
+ }
+ if (he_fixed_rate && (!peer->sta->he_cap.has_he ||
+ peer->sta->rx_nss < he_nss)) {
+ ret = false;
+ goto exit;
+ }
+ }
+ }
+exit:
+ spin_unlock_bh(&ar->ab->base_lock);
+ rcu_read_unlock();
+ return ret;
+}
+
static int
ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
@@ -6290,6 +6769,9 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
enum nl80211_band band;
const u8 *ht_mcs_mask;
const u16 *vht_mcs_mask;
+ const u16 *he_mcs_mask;
+ u8 he_ltf = 0;
+ u8 he_gi = 0;
u32 rate;
u8 nss;
u8 sgi;
@@ -6297,6 +6779,7 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
int single_nss;
int ret;
int num_rates;
+ bool he_fixed_rate = false;

if (ath11k_mac_vif_chan(vif, &def))
return -EPERM;
@@ -6304,12 +6787,16 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
band = def.chan->band;
ht_mcs_mask = mask->control[band].ht_mcs;
vht_mcs_mask = mask->control[band].vht_mcs;
+ he_mcs_mask = mask->control[band].he_mcs;
ldpc = !!(ar->ht_cap_info & WMI_HT_CAP_LDPC);

sgi = mask->control[band].gi;
if (sgi == NL80211_TXRATE_FORCE_LGI)
return -EINVAL;

+ he_gi = mask->control[band].he_gi;
+ he_ltf = mask->control[band].he_ltf;
+
/* mac80211 doesn't support sending a fixed HT/VHT MCS alone, rather it
* requires passing atleast one of used basic rates along with them.
* Fixed rate setting across different preambles(legacy, HT, VHT) is
@@ -6333,11 +6820,22 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
&single_nss)) {
rate = WMI_FIXED_RATE_NONE;
nss = single_nss;
+ mutex_lock(&ar->conf_mutex);
+ arvif->bitrate_mask = *mask;
+ ieee80211_iterate_stations_atomic(ar->hw,
+ ath11k_mac_set_bitrate_mask_iter,
+ arvif);
+ mutex_unlock(&ar->conf_mutex);
} else {
rate = WMI_FIXED_RATE_NONE;
+
+ if (!ath11k_mac_validate_vht_he_fixed_rate_settings(ar, band, mask))
+ ath11k_warn(ar->ab,
+ "could not update fixed rate settings to all peers due to mcs/nss incompaitiblity\n");
nss = min_t(u32, ar->num_tx_chains,
- max(ath11k_mac_max_ht_nss(ht_mcs_mask),
- ath11k_mac_max_vht_nss(vht_mcs_mask)));
+ max(max(ath11k_mac_max_ht_nss(ht_mcs_mask),
+ ath11k_mac_max_vht_nss(vht_mcs_mask)),
+ ath11k_mac_max_he_nss(he_mcs_mask)));

/* If multiple rates across different preambles are given
* we can reconfigure this info with all peers using PEER_ASSOC
@@ -6372,12 +6870,23 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
return -EINVAL;
}

+ num_rates = ath11k_mac_bitrate_mask_num_he_rates(ar, band,
+ mask);
+ if (num_rates == 1)
+ he_fixed_rate = true;
+
+ if (!ath11k_mac_he_mcs_range_present(ar, band, mask) &&
+ num_rates > 1) {
+ ath11k_warn(ar->ab,
+ "Setting more than one HE MCS Value in bitrate mask not supported\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&ar->conf_mutex);
ieee80211_iterate_stations_atomic(ar->hw,
ath11k_mac_disable_peer_fixed_rate,
arvif);

- mutex_lock(&ar->conf_mutex);
-
arvif->bitrate_mask = *mask;
ieee80211_iterate_stations_atomic(ar->hw,
ath11k_mac_set_bitrate_mask_iter,
@@ -6388,9 +6897,10 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,

mutex_lock(&ar->conf_mutex);

- ret = ath11k_mac_set_fixed_rate_params(arvif, rate, nss, sgi, ldpc);
+ ret = ath11k_mac_set_rate_params(arvif, rate, nss, sgi, ldpc, he_gi,
+ he_ltf, he_fixed_rate);
if (ret) {
- ath11k_warn(ar->ab, "failed to set fixed rate params on vdev %i: %d\n",
+ ath11k_warn(ar->ab, "failed to set rate params on vdev %i: %d\n",
arvif->vdev_id, ret);
}

diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c
index e3d11a0a7b7c..330b435e0ed3 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.c
+++ b/drivers/net/wireless/ath/ath11k/wmi.c
@@ -1904,8 +1904,8 @@ int ath11k_wmi_send_peer_assoc_cmd(struct ath11k *ar,
FIELD_PREP(WMI_TLV_LEN,
sizeof(*he_mcs) - TLV_HDR_SIZE);

- he_mcs->rx_mcs_set = param->peer_he_rx_mcs_set[i];
- he_mcs->tx_mcs_set = param->peer_he_tx_mcs_set[i];
+ he_mcs->rx_mcs_set = param->peer_he_tx_mcs_set[i];
+ he_mcs->tx_mcs_set = param->peer_he_rx_mcs_set[i];
ptr += sizeof(*he_mcs);
}

diff --git a/drivers/net/wireless/ath/ath11k/wmi.h b/drivers/net/wireless/ath/ath11k/wmi.h
index 799b3bd96a27..097023a94e06 100644
--- a/drivers/net/wireless/ath/ath11k/wmi.h
+++ b/drivers/net/wireless/ath/ath11k/wmi.h
@@ -119,6 +119,22 @@ enum {
WMI_HOST_WLAN_2G_5G_CAP = 0x3,
};

+/* Parameters used for WMI_VDEV_PARAM_AUTORATE_MISC_CFG command.
+ * Used only for HE auto rate mode.
+ */
+enum {
+ /* HE LTF related configuration */
+ WMI_HE_AUTORATE_LTF_1X = BIT(0),
+ WMI_HE_AUTORATE_LTF_2X = BIT(1),
+ WMI_HE_AUTORATE_LTF_4X = BIT(2),
+
+ /* HE GI related configuration */
+ WMI_AUTORATE_400NS_GI = BIT(8),
+ WMI_AUTORATE_800NS_GI = BIT(9),
+ WMI_AUTORATE_1600NS_GI = BIT(10),
+ WMI_AUTORATE_3200NS_GI = BIT(11),
+};
+
/*
* wmi command groups.
*/
@@ -1044,7 +1060,9 @@ enum wmi_tlv_vdev_param {
WMI_VDEV_PARAM_HE_RANGE_EXT,
WMI_VDEV_PARAM_ENABLE_BCAST_PROBE_RESPONSE,
WMI_VDEV_PARAM_FILS_MAX_CHANNEL_GUARD_TIME,
+ WMI_VDEV_PARAM_HE_LTF = 0x74,
WMI_VDEV_PARAM_BA_MODE = 0x7e,
+ WMI_VDEV_PARAM_AUTORATE_MISC_CFG = 0x80,
WMI_VDEV_PARAM_SET_HE_SOUNDING_MODE = 0x87,
WMI_VDEV_PARAM_6GHZ_PARAMS = 0x99,
WMI_VDEV_PARAM_PROTOTYPE = 0x8000,
@@ -3920,7 +3938,9 @@ struct wmi_vht_rate_set {

struct wmi_he_rate_set {
u32 tlv_header;
+ /* MCS at which the peer can receive */
u32 rx_mcs_set;
+ /* MCS at which the peer can transmit */
u32 tx_mcs_set;
} __packed;

--
2.25.1