[PATCH v4] mt76: mt7915: introduce mt7915_mcu_beacon_check_caps()
Ryder Lee
ryder.lee at mediatek.com
Sat Aug 28 23:17:36 PDT 2021
Beacon elements might be changed by hostapd configuraion, so driver
should compare both IEs and PHY capabilities to get the least common
denominator before association.
Co-developed-by: Evelyn Tsai <evelyn.tsai at mediatek.com>
Signed-off-by: Evelyn Tsai <evelyn.tsai at mediatek.com>
Signed-off-by: Ryder Lee <ryder.lee at mediatek.com>
---
My previous v4 didn't get to patchwork, so resend it.
v4 - remove extra +.
v3 - rebase and rework LDPC part.
v2 - clean up codes.
---
.../net/wireless/mediatek/mt76/mt7915/mcu.c | 164 +++++++++++++-----
.../wireless/mediatek/mt76/mt7915/mt7915.h | 12 ++
2 files changed, 137 insertions(+), 39 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 39cba8210242..8141a42b2d0b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -1317,9 +1317,11 @@ mt7915_mcu_sta_basic_tlv(struct sk_buff *skb, struct ieee80211_vif *vif,
}
static void
-mt7915_mcu_sta_he_tlv(struct sk_buff *skb, struct ieee80211_sta *sta)
+mt7915_mcu_sta_he_tlv(struct sk_buff *skb, struct ieee80211_sta *sta,
+ struct ieee80211_vif *vif)
{
struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
+ struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
struct ieee80211_he_cap_elem *elem = &he_cap->he_cap_elem;
enum nl80211_band band = msta->vif->phy->mt76->chandef.chan->band;
@@ -1352,8 +1354,8 @@ mt7915_mcu_sta_he_tlv(struct sk_buff *skb, struct ieee80211_sta *sta)
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_RU_MAPPING_IN_5G))
cap |= STA_REC_HE_CAP_BW20_RU242_SUPPORT;
- if (elem->phy_cap_info[1] &
- IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD)
+ if (mvif->cap.ldpc && (elem->phy_cap_info[1] &
+ IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
cap |= STA_REC_HE_CAP_LDPC;
if (elem->phy_cap_info[1] &
@@ -1488,8 +1490,10 @@ mt7915_mcu_sta_uapsd_tlv(struct sk_buff *skb, struct ieee80211_sta *sta,
}
static void
-mt7915_mcu_sta_muru_tlv(struct sk_buff *skb, struct ieee80211_sta *sta)
+mt7915_mcu_sta_muru_tlv(struct sk_buff *skb, struct ieee80211_sta *sta,
+ struct ieee80211_vif *vif)
{
+ struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
struct ieee80211_he_cap_elem *elem = &he_cap->he_cap_elem;
struct sta_rec_muru *muru;
@@ -1499,7 +1503,14 @@ mt7915_mcu_sta_muru_tlv(struct sk_buff *skb, struct ieee80211_sta *sta)
muru = (struct sta_rec_muru *)tlv;
muru->cfg.ofdma_dl_en = true;
- muru->cfg.mimo_dl_en = true;
+
+ /* A non-AP HE station must support MU beamformee */
+ if (vif->type == NL80211_IFTYPE_STATION && vif->bss_conf.he_support)
+ muru->cfg.mimo_dl_en = true;
+ else
+ muru->cfg.mimo_dl_en = mvif->cap.he_mu_ebfer ||
+ mvif->cap.vht_mu_ebfer ||
+ mvif->cap.vht_mu_ebfee;
muru->ofdma_dl.punc_pream_rx =
HE_PHY(CAP1_PREAMBLE_PUNC_RX_MASK, elem->phy_cap_info[1]);
@@ -1598,7 +1609,7 @@ mt7915_mcu_sta_tlv(struct mt7915_dev *dev, struct sk_buff *skb,
/* starec he */
if (sta->he_cap.has_he)
- mt7915_mcu_sta_he_tlv(skb, sta);
+ mt7915_mcu_sta_he_tlv(skb, sta, vif);
/* starec uapsd */
mt7915_mcu_sta_uapsd_tlv(skb, sta, vif);
@@ -1620,9 +1631,11 @@ mt7915_mcu_wtbl_smps_tlv(struct sk_buff *skb, struct ieee80211_sta *sta,
}
static void
-mt7915_mcu_wtbl_ht_tlv(struct sk_buff *skb, struct ieee80211_sta *sta,
- void *sta_wtbl, void *wtbl_tlv)
+mt7915_mcu_wtbl_ht_tlv(struct sk_buff *skb, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta, void *sta_wtbl,
+ void *wtbl_tlv)
{
+ struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
struct wtbl_ht *ht = NULL;
struct tlv *tlv;
@@ -1631,7 +1644,8 @@ mt7915_mcu_wtbl_ht_tlv(struct sk_buff *skb, struct ieee80211_sta *sta,
tlv = mt7915_mcu_add_nested_tlv(skb, WTBL_HT, sizeof(*ht),
wtbl_tlv, sta_wtbl);
ht = (struct wtbl_ht *)tlv;
- ht->ldpc = !!(sta->ht_cap.cap & IEEE80211_HT_CAP_LDPC_CODING);
+ ht->ldpc = mvif->cap.ldpc &&
+ (sta->ht_cap.cap & IEEE80211_HT_CAP_LDPC_CODING);
ht->af = sta->ht_cap.ampdu_factor;
ht->mm = sta->ht_cap.ampdu_density;
ht->ht = true;
@@ -1645,7 +1659,8 @@ mt7915_mcu_wtbl_ht_tlv(struct sk_buff *skb, struct ieee80211_sta *sta,
tlv = mt7915_mcu_add_nested_tlv(skb, WTBL_VHT, sizeof(*vht),
wtbl_tlv, sta_wtbl);
vht = (struct wtbl_vht *)tlv;
- vht->ldpc = !!(sta->vht_cap.cap & IEEE80211_VHT_CAP_RXLDPC);
+ vht->ldpc = mvif->cap.ldpc &&
+ (sta->vht_cap.cap & IEEE80211_VHT_CAP_RXLDPC);
vht->vht = true;
af = FIELD_GET(IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK,
@@ -1968,7 +1983,7 @@ mt7915_mcu_add_txbf(struct mt7915_dev *dev, struct ieee80211_vif *vif,
struct mt7915_phy *phy;
struct sk_buff *skb;
int r, len;
- bool ebfee = 0, ebf = 0;
+ bool ebfee = false, ebfer = false;
if (vif->type != NL80211_IFTYPE_STATION &&
vif->type != NL80211_IFTYPE_AP)
@@ -1977,42 +1992,32 @@ mt7915_mcu_add_txbf(struct mt7915_dev *dev, struct ieee80211_vif *vif,
phy = mvif->band_idx ? mt7915_ext_phy(dev) : &dev->phy;
if (sta->he_cap.has_he) {
- struct ieee80211_he_cap_elem *pe;
- const struct ieee80211_he_cap_elem *ve;
- const struct ieee80211_sta_he_cap *vc;
-
- pe = &sta->he_cap.he_cap_elem;
- vc = mt7915_get_he_phy_cap(phy, vif);
- ve = &vc->he_cap_elem;
-
- ebfee = !!(HE_PHY(CAP3_SU_BEAMFORMER, pe->phy_cap_info[3]) &&
- HE_PHY(CAP4_SU_BEAMFORMEE, ve->phy_cap_info[4]));
- ebf = !!(HE_PHY(CAP3_SU_BEAMFORMER, ve->phy_cap_info[3]) &&
- HE_PHY(CAP4_SU_BEAMFORMEE, pe->phy_cap_info[4]));
- } else if (sta->vht_cap.vht_supported) {
- struct ieee80211_sta_vht_cap *pc;
- struct ieee80211_sta_vht_cap *vc;
+ struct ieee80211_he_cap_elem *pe = &sta->he_cap.he_cap_elem;
- pc = &sta->vht_cap;
- vc = &phy->mt76->sband_5g.sband.vht_cap;
+ ebfee = mvif->cap.he_su_ebfee &&
+ HE_PHY(CAP3_SU_BEAMFORMER, pe->phy_cap_info[3]);
+ ebfer = mvif->cap.he_su_ebfer &&
+ HE_PHY(CAP4_SU_BEAMFORMEE, pe->phy_cap_info[4]);
+ } else if (sta->vht_cap.vht_supported) {
+ u32 cap = sta->vht_cap.cap;
- ebfee = !!((pc->cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE) &&
- (vc->cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE));
- ebf = !!((vc->cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE) &&
- (pc->cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE));
+ ebfee = mvif->cap.vht_su_ebfee &&
+ (cap & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE);
+ ebfer = mvif->cap.vht_su_ebfer &&
+ (cap & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE);
}
/* must keep each tag independent */
/* starec bf */
- if (ebf || dev->ibf) {
+ if (ebfer || dev->ibf) {
len = sizeof(struct sta_req_hdr) + sizeof(struct sta_rec_bf);
skb = mt7915_mcu_alloc_sta_req(dev, mvif, msta, len);
if (IS_ERR(skb))
return PTR_ERR(skb);
- mt7915_mcu_sta_bfer_tlv(skb, sta, vif, phy, enable, ebf);
+ mt7915_mcu_sta_bfer_tlv(skb, sta, vif, phy, enable, ebfer);
r = mt76_mcu_skb_send_msg(&dev->mt76, skb,
MCU_EXT_CMD(STA_REC_UPDATE), true);
@@ -2217,7 +2222,8 @@ mt7915_mcu_sta_rate_ctrl_tlv(struct sk_buff *skb, struct mt7915_dev *dev,
cap |= STA_CAP_TX_STBC;
if (sta->ht_cap.cap & IEEE80211_HT_CAP_RX_STBC)
cap |= STA_CAP_RX_STBC;
- if (sta->ht_cap.cap & IEEE80211_HT_CAP_LDPC_CODING)
+ if (mvif->cap.ldpc &&
+ (sta->ht_cap.cap & IEEE80211_HT_CAP_LDPC_CODING))
cap |= STA_CAP_LDPC;
mt7915_mcu_set_sta_ht_mcs(sta, ra->ht_mcs,
@@ -2242,7 +2248,8 @@ mt7915_mcu_sta_rate_ctrl_tlv(struct sk_buff *skb, struct mt7915_dev *dev,
cap |= STA_CAP_VHT_TX_STBC;
if (sta->vht_cap.cap & IEEE80211_VHT_CAP_RXSTBC_1)
cap |= STA_CAP_VHT_RX_STBC;
- if (sta->vht_cap.cap & IEEE80211_VHT_CAP_RXLDPC)
+ if (mvif->cap.ldpc &&
+ (sta->vht_cap.cap & IEEE80211_VHT_CAP_RXLDPC))
cap |= STA_CAP_VHT_LDPC;
mt7915_mcu_set_sta_vht_mcs(sta, ra->supp_vht_mcs,
@@ -2276,7 +2283,7 @@ int mt7915_mcu_add_rate_ctrl(struct mt7915_dev *dev, struct ieee80211_vif *vif,
* update sta_rec_he here as well.
*/
if (sta->he_cap.has_he && changed)
- mt7915_mcu_sta_he_tlv(skb, sta);
+ mt7915_mcu_sta_he_tlv(skb, sta, vif);
/* sta_rec_ra accommodates BW, NSS and only MCS range format
* i.e 0-{7,8,9} for VHT.
@@ -2346,7 +2353,7 @@ mt7915_mcu_add_mu(struct mt7915_dev *dev, struct ieee80211_vif *vif,
/* wait until TxBF and MU ready to update stare vht */
/* starec muru */
- mt7915_mcu_sta_muru_tlv(skb, sta);
+ mt7915_mcu_sta_muru_tlv(skb, sta, vif);
/* starec vht */
mt7915_mcu_sta_vht_tlv(skb, sta);
@@ -2405,7 +2412,7 @@ int mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif,
mt7915_mcu_wtbl_generic_tlv(skb, vif, sta, sta_wtbl, wtbl_hdr);
mt7915_mcu_wtbl_hdr_trans_tlv(skb, vif, sta, sta_wtbl, wtbl_hdr);
if (sta)
- mt7915_mcu_wtbl_ht_tlv(skb, sta, sta_wtbl, wtbl_hdr);
+ mt7915_mcu_wtbl_ht_tlv(skb, vif, sta, sta_wtbl, wtbl_hdr);
}
return mt76_mcu_skb_send_msg(&dev->mt76, skb,
@@ -2499,6 +2506,83 @@ mt7915_mcu_beacon_cont(struct mt7915_dev *dev, struct sk_buff *rskb,
memcpy(buf + MT_TXD_SIZE, skb->data, skb->len);
}
+static void
+mt7915_mcu_beacon_check_caps(struct mt7915_phy *phy, struct ieee80211_vif *vif,
+ struct sk_buff *skb)
+{
+ struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
+ struct mt7915_vif_cap *vc = &mvif->cap;
+ const struct ieee80211_he_cap_elem *he;
+ const struct ieee80211_vht_cap *vht;
+ const struct ieee80211_ht_cap *ht;
+ struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
+ const u8 *ie;
+ u32 len, bc;
+
+ /* Check missing configuration options to allow AP mode in mac80211
+ * to remain in sync with hostapd settings, and get a subset of
+ * beacon and hardware capabilities.
+ */
+ if (WARN_ON_ONCE(skb->len <= (mgmt->u.beacon.variable - skb->data)))
+ return;
+
+ memset(vc, 0, sizeof(*vc));
+
+ len = skb->len - (mgmt->u.beacon.variable - skb->data);
+
+ ie = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, mgmt->u.beacon.variable,
+ len);
+ if (ie && ie[1] >= sizeof(*ht)) {
+ ht = (void *)(ie + 2);
+ bc = le32_to_cpu(ht->cap_info);
+
+ vc->ldpc |= !!(bc & IEEE80211_HT_CAP_LDPC_CODING);
+ }
+
+ ie = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, mgmt->u.beacon.variable,
+ len);
+ if (ie && ie[1] >= sizeof(*vht)) {
+ u32 pc = phy->mt76->sband_5g.sband.vht_cap.cap;
+
+ vht = (void *)(ie + 2);
+ bc = le32_to_cpu(vht->vht_cap_info);
+
+ vc->ldpc |= !!(bc & IEEE80211_VHT_CAP_RXLDPC);
+ vc->vht_su_ebfer =
+ (bc & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE) &&
+ (pc & IEEE80211_VHT_CAP_SU_BEAMFORMER_CAPABLE);
+ vc->vht_su_ebfee =
+ (bc & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE) &&
+ (pc & IEEE80211_VHT_CAP_SU_BEAMFORMEE_CAPABLE);
+ vc->vht_mu_ebfer =
+ (bc & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE) &&
+ (pc & IEEE80211_VHT_CAP_MU_BEAMFORMER_CAPABLE);
+ vc->vht_mu_ebfee =
+ (bc & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE) &&
+ (pc & IEEE80211_VHT_CAP_MU_BEAMFORMEE_CAPABLE);
+ }
+
+ ie = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY,
+ mgmt->u.beacon.variable, len);
+ if (ie && ie[1] >= sizeof(*he) + 1) {
+ const struct ieee80211_sta_he_cap *pc =
+ mt7915_get_he_phy_cap(phy, vif);
+ const struct ieee80211_he_cap_elem *pe = &pc->he_cap_elem;
+
+ he = (void *)(ie + 3);
+
+ vc->he_su_ebfer =
+ HE_PHY(CAP3_SU_BEAMFORMER, he->phy_cap_info[3]) &&
+ HE_PHY(CAP3_SU_BEAMFORMER, pe->phy_cap_info[3]);
+ vc->he_su_ebfee =
+ HE_PHY(CAP4_SU_BEAMFORMEE, he->phy_cap_info[4]) &&
+ HE_PHY(CAP4_SU_BEAMFORMEE, pe->phy_cap_info[4]);
+ vc->he_mu_ebfer =
+ HE_PHY(CAP4_MU_BEAMFORMER, he->phy_cap_info[4]) &&
+ HE_PHY(CAP4_MU_BEAMFORMER, pe->phy_cap_info[4]);
+ }
+}
+
int mt7915_mcu_add_beacon(struct ieee80211_hw *hw,
struct ieee80211_vif *vif, bool en)
{
@@ -2539,6 +2623,8 @@ int mt7915_mcu_add_beacon(struct ieee80211_hw *hw,
info->hw_queue |= MT_TX_HW_QUEUE_EXT_PHY;
}
+ mt7915_mcu_beacon_check_caps(phy, vif, skb);
+
/* TODO: subtag - bss color count & 11v MBSSID */
mt7915_mcu_beacon_csa(rskb, skb, bcn, &offs);
mt7915_mcu_beacon_cont(dev, rskb, skb, bcn, &offs);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
index ab8fc27646e0..e507a34427a1 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
@@ -83,12 +83,24 @@ struct mt7915_sta {
struct mt7915_sta_key_conf bip;
};
+struct mt7915_vif_cap {
+ bool ldpc:1;
+ bool vht_su_ebfer:1;
+ bool vht_su_ebfee:1;
+ bool vht_mu_ebfer:1;
+ bool vht_mu_ebfee:1;
+ bool he_su_ebfer:1;
+ bool he_su_ebfee:1;
+ bool he_mu_ebfer:1;
+}
+
struct mt7915_vif {
u16 idx;
u8 omac_idx;
u8 band_idx;
u8 wmm_idx;
+ struct mt7915_vif_cap cap;
struct mt7915_sta sta;
struct mt7915_phy *phy;
--
2.29.2
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