2020-09-27 17:22:54

by Felix Fietkau

[permalink] [raw]
Subject: [PATCH 1/8] mt76: mt7915: add 802.11 encap offload support

It is currently limited to 3-address mode AP and STA interfaces

Signed-off-by: Felix Fietkau <[email protected]>
---
.../net/wireless/mediatek/mt76/mt7915/init.c | 1 +
.../net/wireless/mediatek/mt76/mt7915/mac.c | 227 +++++++++++-------
.../net/wireless/mediatek/mt76/mt7915/mac.h | 1 +
.../net/wireless/mediatek/mt76/mt7915/mcu.c | 19 ++
.../net/wireless/mediatek/mt76/mt7915/mcu.h | 10 +
drivers/net/wireless/mediatek/mt76/tx.c | 1 +
6 files changed, 176 insertions(+), 83 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index 0232b66acb4f..ee3cf612ae12 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -261,6 +261,7 @@ mt7915_init_wiphy(struct ieee80211_hw *hw)
wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_VHT_IBSS);

ieee80211_hw_set(hw, HAS_RATE_CONTROL);
+ ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD);

hw->max_tx_fragments = 4;
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index dea09051974a..c62fc1cd57b3 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -562,21 +562,131 @@ int mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
return 0;
}

+static void
+mt7915_mac_write_txwi_8023(struct mt7915_dev *dev, __le32 *txwi,
+ struct sk_buff *skb, struct mt76_wcid *wcid)
+{
+
+ u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK;
+ u8 fc_type, fc_stype;
+ bool wmm = false;
+ u32 val;
+
+ if (wcid->sta) {
+ struct ieee80211_sta *sta;
+
+ sta = container_of((void *)wcid, struct ieee80211_sta, drv_priv);
+ wmm = sta->wme;
+ }
+
+ val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_3) |
+ FIELD_PREP(MT_TXD1_TID, tid);
+
+ if (be16_to_cpu(skb->protocol) >= ETH_P_802_3_MIN)
+ val |= MT_TXD1_ETH_802_3;
+
+ txwi[1] |= cpu_to_le32(val);
+
+ fc_type = IEEE80211_FTYPE_DATA >> 2;
+ fc_stype = wmm ? IEEE80211_STYPE_QOS_DATA >> 4 : 0;
+
+ val = FIELD_PREP(MT_TXD2_FRAME_TYPE, fc_type) |
+ FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype);
+
+ txwi[2] |= cpu_to_le32(val);
+
+ val = FIELD_PREP(MT_TXD7_TYPE, fc_type) |
+ FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype);
+ txwi[7] |= cpu_to_le32(val);
+}
+
+static void
+mt7915_mac_write_txwi_80211(struct mt7915_dev *dev, __le32 *txwi,
+ struct sk_buff *skb, struct ieee80211_key_conf *key)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ bool multicast = is_multicast_ether_addr(hdr->addr1);
+ u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK;
+ __le16 fc = hdr->frame_control;
+ u8 fc_type, fc_stype;
+ u32 val;
+
+ if (ieee80211_is_action(fc) &&
+ mgmt->u.action.category == WLAN_CATEGORY_BACK &&
+ mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ) {
+ u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
+
+ txwi[5] |= cpu_to_le32(MT_TXD5_ADD_BA);
+ tid = (capab >> 2) & IEEE80211_QOS_CTL_TID_MASK;
+ } else if (ieee80211_is_back_req(hdr->frame_control)) {
+ struct ieee80211_bar *bar = (struct ieee80211_bar *)hdr;
+ u16 control = le16_to_cpu(bar->control);
+
+ tid = FIELD_GET(IEEE80211_BAR_CTRL_TID_INFO_MASK, control);
+ }
+
+ val = FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_11) |
+ FIELD_PREP(MT_TXD1_HDR_INFO,
+ ieee80211_get_hdrlen_from_skb(skb) / 2) |
+ FIELD_PREP(MT_TXD1_TID, tid);
+ txwi[1] |= cpu_to_le32(val);
+
+ fc_type = (le16_to_cpu(fc) & IEEE80211_FCTL_FTYPE) >> 2;
+ fc_stype = (le16_to_cpu(fc) & IEEE80211_FCTL_STYPE) >> 4;
+
+ val = FIELD_PREP(MT_TXD2_FRAME_TYPE, fc_type) |
+ FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype) |
+ FIELD_PREP(MT_TXD2_MULTICAST, multicast);
+
+ if (key && multicast && ieee80211_is_robust_mgmt_frame(skb) &&
+ key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
+ val |= MT_TXD2_BIP;
+ txwi[3] &= ~cpu_to_le32(MT_TXD3_PROTECT_FRAME);
+ }
+
+ if (!ieee80211_is_data(fc) || multicast)
+ val |= MT_TXD2_FIX_RATE;
+
+ txwi[2] |= cpu_to_le32(val);
+
+ if (ieee80211_is_beacon(fc)) {
+ txwi[3] &= ~cpu_to_le32(MT_TXD3_SW_POWER_MGMT);
+ txwi[3] |= cpu_to_le32(MT_TXD3_REM_TX_COUNT);
+ }
+
+ if (info->flags & IEEE80211_TX_CTL_INJECTED) {
+ u16 seqno = le16_to_cpu(hdr->seq_ctrl);
+
+ if (ieee80211_is_back_req(hdr->frame_control)) {
+ struct ieee80211_bar *bar;
+
+ bar = (struct ieee80211_bar *)skb->data;
+ seqno = le16_to_cpu(bar->start_seq_num);
+ }
+
+ val = MT_TXD3_SN_VALID |
+ FIELD_PREP(MT_TXD3_SEQ, IEEE80211_SEQ_TO_SN(seqno));
+ txwi[3] |= cpu_to_le32(val);
+ }
+
+ val = FIELD_PREP(MT_TXD7_TYPE, fc_type) |
+ FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype);
+ txwi[7] |= cpu_to_le32(val);
+}
+
void mt7915_mac_write_txwi(struct mt7915_dev *dev, __le32 *txwi,
struct sk_buff *skb, struct mt76_wcid *wcid,
struct ieee80211_key_conf *key, bool beacon)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data;
- bool multicast = is_multicast_ether_addr(hdr->addr1);
struct ieee80211_vif *vif = info->control.vif;
struct mt76_phy *mphy = &dev->mphy;
bool ext_phy = info->hw_queue & MT_TX_HW_QUEUE_EXT_PHY;
- u8 fc_type, fc_stype, p_fmt, q_idx, omac_idx = 0, wmm_idx = 0;
- __le16 fc = hdr->frame_control;
- u16 tx_count = 15, seqno = 0;
- u8 tid = skb->priority & IEEE80211_QOS_CTL_TID_MASK;
+ u8 p_fmt, q_idx, omac_idx = 0, wmm_idx = 0;
+ bool is_8023 = info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP;
+ u16 tx_count = 15;
u32 val;

if (vif) {
@@ -589,13 +699,6 @@ void mt7915_mac_write_txwi(struct mt7915_dev *dev, __le32 *txwi,
if (ext_phy && dev->mt76.phy2)
mphy = dev->mt76.phy2;

- fc_type = (le16_to_cpu(fc) & IEEE80211_FCTL_FTYPE) >> 2;
- fc_stype = (le16_to_cpu(fc) & IEEE80211_FCTL_STYPE) >> 4;
-
- txwi[4] = 0;
- txwi[5] = 0;
- txwi[6] = 0;
-
if (beacon) {
p_fmt = MT_TX_TYPE_FW;
q_idx = MT_LMAC_BCN0;
@@ -608,20 +711,6 @@ void mt7915_mac_write_txwi(struct mt7915_dev *dev, __le32 *txwi,
mt7915_lmac_mapping(dev, skb_get_queue_mapping(skb));
}

- if (ieee80211_is_action(fc) &&
- mgmt->u.action.category == WLAN_CATEGORY_BACK &&
- mgmt->u.action.u.addba_req.action_code == WLAN_ACTION_ADDBA_REQ) {
- u16 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
-
- txwi[5] |= cpu_to_le32(MT_TXD5_ADD_BA);
- tid = (capab >> 2) & IEEE80211_QOS_CTL_TID_MASK;
- } else if (ieee80211_is_back_req(hdr->frame_control)) {
- struct ieee80211_bar *bar = (struct ieee80211_bar *)hdr;
- u16 control = le16_to_cpu(bar->control);
-
- tid = FIELD_GET(IEEE80211_BAR_CTRL_TID_INFO_MASK, control);
- }
-
val = FIELD_PREP(MT_TXD0_TX_BYTES, skb->len + MT_TXD_SIZE) |
FIELD_PREP(MT_TXD0_PKT_FMT, p_fmt) |
FIELD_PREP(MT_TXD0_Q_IDX, q_idx);
@@ -629,10 +718,6 @@ void mt7915_mac_write_txwi(struct mt7915_dev *dev, __le32 *txwi,

val = MT_TXD1_LONG_FORMAT |
FIELD_PREP(MT_TXD1_WLAN_IDX, wcid->idx) |
- FIELD_PREP(MT_TXD1_HDR_FORMAT, MT_HDR_FORMAT_802_11) |
- FIELD_PREP(MT_TXD1_HDR_INFO,
- ieee80211_get_hdrlen_from_skb(skb) / 2) |
- FIELD_PREP(MT_TXD1_TID, tid) |
FIELD_PREP(MT_TXD1_OWN_MAC, omac_idx);

if (ext_phy && q_idx >= MT_LMAC_ALTX0 && q_idx <= MT_LMAC_BCN0)
@@ -640,27 +725,31 @@ void mt7915_mac_write_txwi(struct mt7915_dev *dev, __le32 *txwi,

txwi[1] = cpu_to_le32(val);

- val = FIELD_PREP(MT_TXD2_FRAME_TYPE, fc_type) |
- FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype) |
- FIELD_PREP(MT_TXD2_MULTICAST, multicast);
- if (key) {
- if (multicast && ieee80211_is_robust_mgmt_frame(skb) &&
- key->cipher == WLAN_CIPHER_SUITE_AES_CMAC) {
- val |= MT_TXD2_BIP;
- txwi[3] = 0;
- } else {
- txwi[3] = cpu_to_le32(MT_TXD3_PROTECT_FRAME);
- }
- } else {
- txwi[3] = 0;
- }
- txwi[2] = cpu_to_le32(val);
+ txwi[2] = 0;

- if (!ieee80211_is_data(fc) || multicast) {
+ val = MT_TXD3_SW_POWER_MGMT |
+ FIELD_PREP(MT_TXD3_REM_TX_COUNT, tx_count);
+ if (key)
+ val |= MT_TXD3_PROTECT_FRAME;
+ if (info->flags & IEEE80211_TX_CTL_NO_ACK)
+ val |= MT_TXD3_NO_ACK;
+
+ txwi[3] = cpu_to_le32(val);
+ txwi[4] = 0;
+ txwi[5] = 0;
+ txwi[6] = 0;
+ txwi[7] = wcid->amsdu ? cpu_to_le32(MT_TXD7_HW_AMSDU) : 0;
+
+ if (is_8023)
+ mt7915_mac_write_txwi_8023(dev, txwi, skb, wcid);
+ else
+ mt7915_mac_write_txwi_80211(dev, txwi, skb, key);
+
+ if (txwi[2] & cpu_to_le32(MT_TXD2_FIX_RATE)) {
u16 rate;

/* hardware won't add HTC for mgmt/ctrl frame */
- txwi[2] |= cpu_to_le32(MT_TXD2_FIX_RATE | MT_TXD2_HTC_VLD);
+ txwi[2] |= cpu_to_le32(MT_TXD2_HTC_VLD);

if (mphy->chandef.chan->band == NL80211_BAND_5GHZ)
rate = MT7915_5G_RATE_DEFAULT;
@@ -672,36 +761,6 @@ void mt7915_mac_write_txwi(struct mt7915_dev *dev, __le32 *txwi,
txwi[6] |= cpu_to_le32(val);
txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE);
}
-
- if (!ieee80211_is_beacon(fc))
- txwi[3] |= cpu_to_le32(MT_TXD3_SW_POWER_MGMT);
- else
- tx_count = 0x1f;
-
- if (info->flags & IEEE80211_TX_CTL_NO_ACK)
- txwi[3] |= cpu_to_le32(MT_TXD3_NO_ACK);
-
- val = FIELD_PREP(MT_TXD7_TYPE, fc_type) |
- FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype);
- if (wcid->amsdu)
- val |= MT_TXD7_HW_AMSDU;
- txwi[7] = cpu_to_le32(val);
-
- val = FIELD_PREP(MT_TXD3_REM_TX_COUNT, tx_count);
- if (info->flags & IEEE80211_TX_CTL_INJECTED) {
- seqno = le16_to_cpu(hdr->seq_ctrl);
-
- if (ieee80211_is_back_req(hdr->frame_control)) {
- struct ieee80211_bar *bar;
-
- bar = (struct ieee80211_bar *)skb->data;
- seqno = le16_to_cpu(bar->start_seq_num);
- }
-
- val |= MT_TXD3_SN_VALID |
- FIELD_PREP(MT_TXD3_SEQ, IEEE80211_SEQ_TO_SN(seqno));
- }
- txwi[3] |= cpu_to_le32(val);
}

int mt7915_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
@@ -723,11 +782,11 @@ int mt7915_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
if (!wcid)
wcid = &dev->mt76.global_wcid;

- cb->wcid = wcid->idx;
-
mt7915_mac_write_txwi(dev, txwi_ptr, tx_info->skb, wcid, key,
false);

+ cb->wcid = wcid->idx;
+
txp = (struct mt7915_txp *)(txwi + MT_TXD_SIZE);
for (i = 0; i < nbuf; i++) {
txp->buf[i] = cpu_to_le32(tx_info->buf[i + 1].addr);
@@ -745,7 +804,8 @@ int mt7915_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
if (!key)
txp->flags |= cpu_to_le16(MT_CT_INFO_NONE_CIPHER_FRAME);

- if (ieee80211_is_mgmt(hdr->frame_control))
+ if (!(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) &&
+ ieee80211_is_mgmt(hdr->frame_control))
txp->flags |= cpu_to_le16(MT_CT_INFO_MGMT_FRAME);

if (vif) {
@@ -838,7 +898,8 @@ mt7915_tx_complete_status(struct mt76_dev *mdev, struct sk_buff *skb,

info->status.tx_time = 0;

- if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) {
+ if (info->flags & (IEEE80211_TX_CTL_REQ_TX_STATUS |
+ IEEE80211_TX_CTL_HW_80211_ENCAP)) {
mt7915_tx_status(sta, hw, info, skb);
return;
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
index c8bb5ea96c60..c718c70aea94 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
@@ -176,6 +176,7 @@ enum tx_mcu_port_q_idx {
#define MT_TXD1_HDR_PAD GENMASK(19, 18)
#define MT_TXD1_HDR_FORMAT GENMASK(17, 16)
#define MT_TXD1_HDR_INFO GENMASK(15, 11)
+#define MT_TXD1_ETH_802_3 BIT(15)
#define MT_TXD1_VTA BIT(10)
#define MT_TXD1_WLAN_IDX GENMASK(9, 0)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 9cfd7712c97a..18dc3f5f1153 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -1688,6 +1688,24 @@ mt7915_mcu_wtbl_ht_tlv(struct sk_buff *skb, struct ieee80211_sta *sta,
mt7915_mcu_wtbl_smps_tlv(skb, sta, sta_wtbl, wtbl_tlv);
}

+static void
+mt7915_mcu_wtbl_hdr_trans_tlv(struct sk_buff *skb, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ void *sta_wtbl, void *wtbl_tlv)
+{
+ struct wtbl_hdr_trans *htr = NULL;
+ struct tlv *tlv;
+
+ tlv = mt7915_mcu_add_nested_tlv(skb, WTBL_HDR_TRANS, sizeof(*htr),
+ wtbl_tlv, sta_wtbl);
+ htr = (struct wtbl_hdr_trans *)tlv;
+ htr->no_rx_trans = true;
+ if (vif->type == NL80211_IFTYPE_STATION)
+ htr->to_ds = true;
+ else
+ htr->from_ds = true;
+}
+
int mt7915_mcu_add_smps(struct mt7915_dev *dev, struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
@@ -2277,6 +2295,7 @@ int mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif,
sta_wtbl, &skb);
if (enable) {
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);
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
index c656d66385c4..7c4b4d6ad918 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
@@ -551,6 +551,15 @@ struct wtbl_vht {
u8 rsv[4];
} __packed;

+struct wtbl_hdr_trans {
+ __le16 tag;
+ __le16 len;
+ u8 to_ds;
+ u8 from_ds;
+ u8 no_rx_trans;
+ u8 _rsv;
+};
+
enum {
MT_BA_TYPE_INVALID,
MT_BA_TYPE_ORIGINATOR,
@@ -972,6 +981,7 @@ enum {
sizeof(struct wtbl_rx) + \
sizeof(struct wtbl_ht) + \
sizeof(struct wtbl_vht) + \
+ sizeof(struct wtbl_hdr_trans) +\
sizeof(struct wtbl_ba) + \
sizeof(struct wtbl_smps))

diff --git a/drivers/net/wireless/mediatek/mt76/tx.c b/drivers/net/wireless/mediatek/mt76/tx.c
index 44ef4bc7a46e..73624700fe44 100644
--- a/drivers/net/wireless/mediatek/mt76/tx.c
+++ b/drivers/net/wireless/mediatek/mt76/tx.c
@@ -272,6 +272,7 @@ mt76_tx(struct mt76_phy *phy, struct ieee80211_sta *sta,
}

if ((dev->drv->drv_flags & MT_DRV_HW_MGMT_TXQ) &&
+ !(info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP) &&
!ieee80211_is_data(hdr->frame_control) &&
!ieee80211_is_bufferable_mmpdu(hdr->frame_control)) {
qid = MT_TXQ_PSD;
--
2.28.0


2020-09-27 17:24:29

by Felix Fietkau

[permalink] [raw]
Subject: [PATCH 6/8] mt76: mt7915: support 32 station interfaces

When looking for a MAC address slot, start by using main BSSID slots 1-3,
afterwards use 16 repeater mode BSSID slots, then start using the slots
usually used for AP mode.
This search order should prevent unnecessary conflicts with AP mode interfaces
on the same PHY

Signed-off-by: Felix Fietkau <[email protected]>
---
.../net/wireless/mediatek/mt76/mt7915/init.c | 10 ++--
.../net/wireless/mediatek/mt76/mt7915/main.c | 56 ++++++++++++++-----
.../net/wireless/mediatek/mt76/mt7915/mcu.c | 53 ++++++++++++++++--
.../net/wireless/mediatek/mt76/mt7915/mcu.h | 1 +
.../wireless/mediatek/mt76/mt7915/mt7915.h | 27 +++------
5 files changed, 105 insertions(+), 42 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index ee3cf612ae12..5884c0ce45e5 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -195,12 +195,14 @@ static const struct ieee80211_iface_limit if_limits[] = {
.max = 1,
.types = BIT(NL80211_IFTYPE_ADHOC)
}, {
- .max = MT7915_MAX_INTERFACES,
+ .max = 16,
.types = BIT(NL80211_IFTYPE_AP) |
#ifdef CONFIG_MAC80211_MESH
- BIT(NL80211_IFTYPE_MESH_POINT) |
+ BIT(NL80211_IFTYPE_MESH_POINT)
#endif
- BIT(NL80211_IFTYPE_STATION)
+ }, {
+ .max = MT7915_MAX_INTERFACES,
+ .types = BIT(NL80211_IFTYPE_STATION)
}
};

@@ -208,7 +210,7 @@ static const struct ieee80211_iface_combination if_comb[] = {
{
.limits = if_limits,
.n_limits = ARRAY_SIZE(if_limits),
- .max_interfaces = 4,
+ .max_interfaces = MT7915_MAX_INTERFACES,
.num_different_channels = 1,
.beacon_int_infra_match = true,
.radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
index 58c2cd80140c..5d4bffbe07f9 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
@@ -84,28 +84,51 @@ static void mt7915_stop(struct ieee80211_hw *hw)
mutex_unlock(&dev->mt76.mutex);
}

-static int get_omac_idx(enum nl80211_iftype type, u32 mask)
+static inline int get_free_idx(u32 mask, u8 start, u8 end)
+{
+ return ffs(~mask & GENMASK(end, start));
+}
+
+static int get_omac_idx(enum nl80211_iftype type, u64 mask)
{
int i;

switch (type) {
+ case NL80211_IFTYPE_MESH_POINT:
+ case NL80211_IFTYPE_ADHOC:
+ case NL80211_IFTYPE_STATION:
+ /* prefer hw bssid slot 1-3 */
+ i = get_free_idx(mask, HW_BSSID_1, HW_BSSID_3);
+ if (i)
+ return i - 1;
+
+ if (type != NL80211_IFTYPE_STATION)
+ break;
+
+ /* next, try to find a free repeater entry for the sta */
+ i = get_free_idx(mask >> REPEATER_BSSID_START, 0,
+ REPEATER_BSSID_MAX - REPEATER_BSSID_START);
+ if (i)
+ return i + 32 - 1;
+
+ i = get_free_idx(mask, EXT_BSSID_1, EXT_BSSID_MAX);
+ if (i)
+ return i - 1;
+
+ if (~mask & BIT(HW_BSSID_0))
+ return HW_BSSID_0;
+
+ break;
case NL80211_IFTYPE_MONITOR:
case NL80211_IFTYPE_AP:
/* ap uses hw bssid 0 and ext bssid */
if (~mask & BIT(HW_BSSID_0))
return HW_BSSID_0;

- for (i = EXT_BSSID_1; i < EXT_BSSID_END; i++)
- if (~mask & BIT(i))
- return i;
- break;
- case NL80211_IFTYPE_MESH_POINT:
- case NL80211_IFTYPE_ADHOC:
- case NL80211_IFTYPE_STATION:
- /* station uses hw bssid other than 0 */
- for (i = HW_BSSID_1; i < HW_BSSID_MAX; i++)
- if (~mask & BIT(i))
- return i;
+ i = get_free_idx(mask, EXT_BSSID_1, EXT_BSSID_MAX);
+ if (i)
+ return i - 1;
+
break;
default:
WARN_ON(1);
@@ -148,12 +171,12 @@ static int mt7915_add_interface(struct ieee80211_hw *hw,
else
mvif->wmm_idx = mvif->idx % MT7915_MAX_WMM_SETS;

- ret = mt7915_mcu_add_dev_info(dev, vif, true);
+ ret = mt7915_mcu_add_dev_info(phy, vif, true);
if (ret)
goto out;

phy->mt76->vif_mask |= BIT(mvif->idx);
- phy->omac_mask |= BIT(mvif->omac_idx);
+ phy->omac_mask |= BIT_ULL(mvif->omac_idx);

idx = MT7915_WTBL_RESERVED - mvif->idx;

@@ -173,6 +196,9 @@ static int mt7915_add_interface(struct ieee80211_hw *hw,
mtxq->wcid = &mvif->sta.wcid;
}

+ if (vif->type != NL80211_IFTYPE_AP &&
+ (!mvif->omac_idx || mvif->omac_idx > 3))
+ vif->offload_flags = 0;
vif->offload_flags |= IEEE80211_OFFLOAD_ENCAP_4ADDR;

out:
@@ -192,7 +218,7 @@ static void mt7915_remove_interface(struct ieee80211_hw *hw,

/* TODO: disable beacon for the bss */

- mt7915_mcu_add_dev_info(dev, vif, false);
+ mt7915_mcu_add_dev_info(phy, vif, false);

rcu_assign_pointer(dev->mt76.wcid[idx], NULL);

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index ffb774fc699f..ca198c4f5510 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -1022,12 +1022,53 @@ mt7915_mcu_bss_sync_tlv(struct sk_buff *skb, struct ieee80211_vif *vif)
sync->enable = true;
}

+static int
+mt7915_mcu_muar_config(struct mt7915_phy *phy, struct ieee80211_vif *vif,
+ bool bssid, bool enable)
+{
+ struct mt7915_dev *dev = phy->dev;
+ struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
+ u32 idx = mvif->omac_idx - REPEATER_BSSID_START;
+ u32 mask = phy->omac_mask >> 32 & ~BIT(idx);
+ const u8 *addr = vif->addr;
+ struct {
+ u8 mode;
+ u8 force_clear;
+ u8 clear_bitmap[8];
+ u8 entry_count;
+ u8 write;
+ u8 band;
+
+ u8 index;
+ u8 bssid;
+ u8 addr[ETH_ALEN];
+ } __packed req = {
+ .mode = !!mask || enable,
+ .entry_count = 1,
+ .write = 1,
+
+ .index = idx * 2 + bssid,
+ };
+
+ if (bssid)
+ addr = vif->bss_conf.bssid;
+
+ if (enable)
+ ether_addr_copy(req.addr, addr);
+
+ return __mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD_MUAR_UPDATE,
+ &req, sizeof(req), true);
+}
+
int mt7915_mcu_add_bss_info(struct mt7915_phy *phy,
struct ieee80211_vif *vif, int enable)
{
struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
struct sk_buff *skb;

+ if (mvif->omac_idx >= REPEATER_BSSID_START)
+ mt7915_mcu_muar_config(phy, vif, true, enable);
+
skb = mt7915_mcu_alloc_sta_req(phy->dev, mvif, NULL,
MT7915_BSS_UPDATE_MAX_SIZE);
if (IS_ERR(skb))
@@ -1048,10 +1089,10 @@ int mt7915_mcu_add_bss_info(struct mt7915_phy *phy,
if (vif->bss_conf.he_support)
mt7915_mcu_bss_he_tlv(skb, vif, phy);

- if (mvif->omac_idx > HW_BSSID_MAX)
- mt7915_mcu_bss_ext_tlv(skb, mvif);
- else
+ if (mvif->omac_idx < EXT_BSSID_START)
mt7915_mcu_bss_sync_tlv(skb, vif);
+ else if (mvif->omac_idx < REPEATER_BSSID_START)
+ mt7915_mcu_bss_ext_tlv(skb, mvif);
}

return __mt76_mcu_skb_send_msg(&phy->dev->mt76, skb,
@@ -2381,9 +2422,10 @@ int mt7915_mcu_set_fixed_rate(struct mt7915_dev *dev,
MCU_EXT_CMD_STA_REC_UPDATE, true);
}

-int mt7915_mcu_add_dev_info(struct mt7915_dev *dev,
+int mt7915_mcu_add_dev_info(struct mt7915_phy *phy,
struct ieee80211_vif *vif, bool enable)
{
+ struct mt7915_dev *dev = phy->dev;
struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
struct {
struct req_hdr {
@@ -2415,6 +2457,9 @@ int mt7915_mcu_add_dev_info(struct mt7915_dev *dev,
},
};

+ if (mvif->omac_idx >= REPEATER_BSSID_START)
+ return mt7915_mcu_muar_config(phy, vif, false, enable);
+
memcpy(data.tlv.omac_addr, vif->addr, ETH_ALEN);
return __mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD_DEV_INFO_UPDATE,
&data, sizeof(data), true);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
index 109647eea01d..49ff60509a72 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
@@ -207,6 +207,7 @@ enum {
MCU_EXT_CMD_PROTECT_CTRL = 0x3e,
MCU_EXT_CMD_MAC_INIT_CTRL = 0x46,
MCU_EXT_CMD_RX_HDR_TRANS = 0x47,
+ MCU_EXT_CMD_MUAR_UPDATE = 0x48,
MCU_EXT_CMD_SET_RX_PATH = 0x4e,
MCU_EXT_CMD_TX_POWER_FEATURE_CTRL = 0x58,
MCU_EXT_CMD_MWDS_SUPPORT = 0x80,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
index 0ed439ecf787..292075d3f0da 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
@@ -9,7 +9,7 @@
#include "../mt76.h"
#include "regs.h"

-#define MT7915_MAX_INTERFACES 4
+#define MT7915_MAX_INTERFACES 32
#define MT7915_MAX_WMM_SETS 4
#define MT7915_WTBL_SIZE 288
#define MT7915_WTBL_RESERVED (MT7915_WTBL_SIZE - 1)
@@ -113,7 +113,7 @@ struct mt7915_phy {
struct ieee80211_sband_iftype_data iftype[2][NUM_NL80211_IFTYPES];

u32 rxfilter;
- u32 omac_mask;
+ u64 omac_mask;

u16 noise;
u16 chainmask;
@@ -171,24 +171,13 @@ enum {
HW_BSSID_1,
HW_BSSID_2,
HW_BSSID_3,
- HW_BSSID_MAX,
+ HW_BSSID_MAX = HW_BSSID_3,
EXT_BSSID_START = 0x10,
EXT_BSSID_1,
- EXT_BSSID_2,
- EXT_BSSID_3,
- EXT_BSSID_4,
- EXT_BSSID_5,
- EXT_BSSID_6,
- EXT_BSSID_7,
- EXT_BSSID_8,
- EXT_BSSID_9,
- EXT_BSSID_10,
- EXT_BSSID_11,
- EXT_BSSID_12,
- EXT_BSSID_13,
- EXT_BSSID_14,
- EXT_BSSID_15,
- EXT_BSSID_END
+ EXT_BSSID_15 = 0x1f,
+ EXT_BSSID_MAX = EXT_BSSID_15,
+ REPEATER_BSSID_START = 0x20,
+ REPEATER_BSSID_MAX = 0x3f,
};

enum {
@@ -281,7 +270,7 @@ int mt7915_dma_init(struct mt7915_dev *dev);
void mt7915_dma_prefetch(struct mt7915_dev *dev);
void mt7915_dma_cleanup(struct mt7915_dev *dev);
int mt7915_mcu_init(struct mt7915_dev *dev);
-int mt7915_mcu_add_dev_info(struct mt7915_dev *dev,
+int mt7915_mcu_add_dev_info(struct mt7915_phy *phy,
struct ieee80211_vif *vif, bool enable);
int mt7915_mcu_add_bss_info(struct mt7915_phy *phy,
struct ieee80211_vif *vif, int enable);
--
2.28.0

2020-09-27 17:24:59

by Felix Fietkau

[permalink] [raw]
Subject: [PATCH 7/8] mt76: mt7915: fix processing txfree events

In the MT7915 info, the fields for the WLAN index / queue overlap with the
token id, and the MT_TX_FREE_PAIR bit indicates, which one is present.

If MT_TX_FREE_PAIR is set, skip processing the token index, since the data
will not be valid.

This fixes accidentally freeing tokens which are still in use by the
hardware with a wrong station pointer.

Signed-off-by: Felix Fietkau <[email protected]>
---
drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index 44a5b4f8e43c..3456d9532f29 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -972,6 +972,7 @@ void mt7915_mac_tx_free(struct mt7915_dev *dev, struct sk_buff *skb)
if (list_empty(&msta->poll_list))
list_add_tail(&msta->poll_list, &dev->sta_poll_list);
spin_unlock_bh(&dev->sta_poll_lock);
+ continue;
}

msdu = FIELD_GET(MT_TX_FREE_MSDU_ID, info);
--
2.28.0

2020-09-27 17:25:26

by Felix Fietkau

[permalink] [raw]
Subject: [PATCH 8/8] mt76: mt7915: use napi_consume_skb to bulk-free tx skbs

Slightly improves performance

Signed-off-by: Felix Fietkau <[email protected]>
---
.../net/wireless/mediatek/mt76/mt7915/mac.c | 52 ++++++++-----------
1 file changed, 21 insertions(+), 31 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index 3456d9532f29..a7118df7b93f 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -858,17 +858,19 @@ mt7915_tx_check_aggr(struct ieee80211_sta *sta, __le32 *txwi)
ieee80211_start_tx_ba_session(sta, tid, 0);
}

-static inline void
-mt7915_tx_status(struct ieee80211_sta *sta, struct ieee80211_hw *hw,
- struct ieee80211_tx_info *info, struct sk_buff *skb)
+static void
+mt7915_tx_complete_status(struct mt76_dev *mdev, struct sk_buff *skb,
+ struct ieee80211_sta *sta, u8 stat,
+ struct list_head *free_list)
{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_status status = {
.sta = sta,
.info = info,
+ .skb = skb,
+ .free_list = free_list,
};
-
- if (skb)
- status.skb = skb;
+ struct ieee80211_hw *hw;

if (sta) {
struct mt7915_sta *msta;
@@ -877,17 +879,6 @@ mt7915_tx_status(struct ieee80211_sta *sta, struct ieee80211_hw *hw,
status.rate = &msta->stats.tx_rate;
}

- /* use status_ext to report HE rate */
- ieee80211_tx_status_ext(hw, &status);
-}
-
-static void
-mt7915_tx_complete_status(struct mt76_dev *mdev, struct sk_buff *skb,
- struct ieee80211_sta *sta, u8 stat)
-{
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct ieee80211_hw *hw;
-
hw = mt76_tx_status_get_hw(mdev, skb);

if (info->flags & IEEE80211_TX_CTL_AMPDU)
@@ -900,17 +891,7 @@ mt7915_tx_complete_status(struct mt76_dev *mdev, struct sk_buff *skb,
info->flags |= IEEE80211_TX_STAT_ACK;

info->status.tx_time = 0;
-
- if (info->flags & (IEEE80211_TX_CTL_REQ_TX_STATUS |
- IEEE80211_TX_CTL_HW_80211_ENCAP)) {
- mt7915_tx_status(sta, hw, info, skb);
- return;
- }
-
- if (sta || !(info->flags & IEEE80211_TX_CTL_NO_ACK))
- mt7915_tx_status(sta, hw, info, NULL);
-
- ieee80211_free_txskb(hw, skb);
+ ieee80211_tx_status_ext(hw, &status);
}

void mt7915_txp_skb_unmap(struct mt76_dev *dev,
@@ -931,6 +912,8 @@ void mt7915_mac_tx_free(struct mt7915_dev *dev, struct sk_buff *skb)
struct mt76_dev *mdev = &dev->mt76;
struct mt76_txwi_cache *txwi;
struct ieee80211_sta *sta = NULL;
+ LIST_HEAD(free_list);
+ struct sk_buff *tmp;
u8 i, count;

/* clean DMA queues and unmap buffers first */
@@ -1002,16 +985,22 @@ void mt7915_mac_tx_free(struct mt7915_dev *dev, struct sk_buff *skb)
atomic_cmpxchg(&wcid->non_aql_packets, pending, 0);
}

- mt7915_tx_complete_status(mdev, txwi->skb, sta, stat);
+ mt7915_tx_complete_status(mdev, txwi->skb, sta, stat, &free_list);
txwi->skb = NULL;
}

mt76_put_txwi(mdev, txwi);
}
- dev_kfree_skb(skb);

mt7915_mac_sta_poll(dev);
mt76_worker_schedule(&dev->mt76.tx_worker);
+
+ napi_consume_skb(skb, 1);
+
+ list_for_each_entry_safe(skb, tmp, &free_list, list) {
+ skb_list_del_init(skb);
+ napi_consume_skb(skb, 1);
+ }
}

void mt7915_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e)
@@ -1044,7 +1033,8 @@ void mt7915_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e)

wcid = rcu_dereference(dev->mt76.wcid[cb->wcid]);

- mt7915_tx_complete_status(mdev, e->skb, wcid_to_sta(wcid), 0);
+ mt7915_tx_complete_status(mdev, e->skb, wcid_to_sta(wcid), 0,
+ NULL);
}
}

--
2.28.0