[PATCH v2 4/4] mt76: mt7615: add 802.11 encap offload support
Ryder Lee
ryder.lee at mediatek.com
Thu May 27 23:05:44 PDT 2021
It is currently limited to 3-address mode AP and STA interfaces,
and needs to integrate with software ASMDU.
Signed-off-by: Ryder Lee <ryder.lee at mediatek.com>
---
change since v2 - none
---
.../net/wireless/mediatek/mt76/mt7615/init.c | 1 +
.../net/wireless/mediatek/mt76/mt7615/mac.c | 189 ++++++++++++------
.../net/wireless/mediatek/mt76/mt7615/mac.h | 1 +
.../net/wireless/mediatek/mt76/mt7615/mcu.c | 4 +-
.../wireless/mediatek/mt76/mt7615/pci_mac.c | 3 +-
5 files changed, 132 insertions(+), 66 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index a41a14f6d599..800ba10ee67e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -348,6 +348,7 @@ mt7615_init_wiphy(struct ieee80211_hw *hw)
ieee80211_hw_set(hw, TX_STATUS_NO_AMPDU_LEN);
ieee80211_hw_set(hw, WANT_MONITOR_VIF);
ieee80211_hw_set(hw, SUPPORTS_RX_DECAP_OFFLOAD);
+ ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD);
if (is_mt7615(&phy->dev->mt76))
hw->max_tx_fragments = MT_TXP_MAX_BUF_NUM;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index bef43c871908..71af122a0b38 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -567,24 +567,128 @@ mt7615_mac_tx_rate_val(struct mt7615_dev *dev,
return rateval;
}
+static void
+mt7615_mac_write_txwi_8023(struct mt7615_dev *dev, __le32 *txwi,
+ struct sk_buff *skb, struct mt76_wcid *wcid)
+{
+
+ bool is_mmio = mt76_is_mmio(&dev->mt76);
+ 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);
+ 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);
+
+ if (!is_mmio) {
+ val = FIELD_PREP(MT_TXD8_L_TYPE, fc_type) |
+ FIELD_PREP(MT_TXD8_L_SUB_TYPE, fc_stype);
+ txwi[8] |= cpu_to_le32(val);
+ }
+}
+
+static void
+mt7615_mac_write_txwi_80211(struct mt7615_dev *dev, __le32 *txwi,
+ struct sk_buff *skb, struct ieee80211_key_conf *key)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ bool multicast = is_multicast_ether_addr(hdr->addr1);
+ bool is_mmio = mt76_is_mmio(&dev->mt76);
+ __le16 fc = hdr->frame_control;
+ u8 fc_type, fc_stype;
+ u32 val;
+
+ 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);
+ 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);
+ }
+
+ txwi[2] |= cpu_to_le32(val);
+
+ if (ieee80211_is_beacon(fc)) {
+ val = MT_TXD5_TX_STATUS_HOST | MT_TXD5_SW_POWER_MGMT |
+ MT_TXD5_PID;
+ txwi[5] &= ~cpu_to_le32(val);
+ 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);
+
+ if (!is_mmio) {
+ val = FIELD_PREP(MT_TXD8_L_TYPE, fc_type) |
+ FIELD_PREP(MT_TXD8_L_SUB_TYPE, fc_stype);
+ txwi[8] |= cpu_to_le32(val);
+ }
+}
+
int mt7615_mac_write_txwi(struct mt7615_dev *dev, __le32 *txwi,
struct sk_buff *skb, struct mt76_wcid *wcid,
struct ieee80211_sta *sta, int pid,
struct ieee80211_key_conf *key, bool beacon)
{
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- u8 fc_type, fc_stype, p_fmt, q_idx, omac_idx = 0, wmm_idx = 0;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_tx_rate *rate = &info->control.rates[0];
+ struct ieee80211_hw *hw = mt76_hw(dev);
bool ext_phy = info->hw_queue & MT_TX_HW_QUEUE_EXT_PHY;
- bool multicast = is_multicast_ether_addr(hdr->addr1);
struct ieee80211_vif *vif = info->control.vif;
+ bool is_8023 = info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP;
bool is_mmio = mt76_is_mmio(&dev->mt76);
u32 val, sz_txd = is_mmio ? MT_TXD_SIZE : MT_USB_TXD_SIZE;
+ u8 p_fmt, q_idx, omac_idx = 0, wmm_idx = 0;
struct mt76_phy *mphy = &dev->mphy;
- __le16 fc = hdr->frame_control;
int tx_count = 8;
- u16 seqno = 0;
if (vif) {
struct mt76_vif *mvif = (struct mt76_vif *)vif->drv_priv;
@@ -602,9 +706,6 @@ int mt7615_mac_write_txwi(struct mt7615_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;
-
if (beacon) {
p_fmt = MT_TX_TYPE_FW;
q_idx = ext_phy ? MT_LMAC_BCN1 : MT_LMAC_BCN0;
@@ -624,37 +725,20 @@ int mt7615_mac_write_txwi(struct mt7615_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,
skb->priority & IEEE80211_QOS_CTL_TID_MASK) |
FIELD_PREP(MT_TXD1_PKT_FMT, p_fmt) |
FIELD_PREP(MT_TXD1_OWN_MAC, omac_idx);
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;
+ txwi[4] = 0;
+ txwi[6] = 0;
+ txwi[7] = cpu_to_le32(FIELD_PREP(MT_TXD7_SPE_IDX, 0x18));
if (!(info->flags & IEEE80211_TX_CTL_AMPDU))
txwi[2] |= cpu_to_le32(MT_TXD2_BA_DISABLE);
- txwi[4] = 0;
- txwi[6] = 0;
-
if (rate->idx >= 0 && rate->count &&
!(info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE)) {
bool stbc = info->flags & IEEE80211_TX_CTL_STBC;
@@ -682,45 +766,24 @@ int mt7615_mac_write_txwi(struct mt7615_dev *dev, __le32 *txwi,
tx_count = rate->count;
}
- if (!ieee80211_is_beacon(fc)) {
- struct ieee80211_hw *hw = mt76_hw(dev);
-
- val = MT_TXD5_TX_STATUS_HOST | FIELD_PREP(MT_TXD5_PID, pid);
- if (!ieee80211_hw_check(hw, SUPPORTS_PS))
- val |= MT_TXD5_SW_POWER_MGMT;
- txwi[5] = cpu_to_le32(val);
- } else {
- txwi[5] = 0;
- /* use maximum tx count for beacons */
- tx_count = 0x1f;
- }
-
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 (key)
+ val |= MT_TXD3_PROTECT_FRAME;
+ if (info->flags & IEEE80211_TX_CTL_NO_ACK)
+ val |= MT_TXD3_NO_ACK;
- if (ieee80211_is_back_req(hdr->frame_control)) {
- struct ieee80211_bar *bar;
+ txwi[3] = cpu_to_le32(val);
- 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));
- }
+ val = MT_TXD5_TX_STATUS_HOST | FIELD_PREP(MT_TXD5_PID, pid);
+ if (!ieee80211_hw_check(hw, SUPPORTS_PS))
+ val |= MT_TXD5_SW_POWER_MGMT;
- txwi[3] |= cpu_to_le32(val);
+ txwi[5] = cpu_to_le32(val);
- if (info->flags & IEEE80211_TX_CTL_NO_ACK)
- txwi[3] |= cpu_to_le32(MT_TXD3_NO_ACK);
-
- txwi[7] = FIELD_PREP(MT_TXD7_TYPE, fc_type) |
- FIELD_PREP(MT_TXD7_SUB_TYPE, fc_stype) |
- FIELD_PREP(MT_TXD7_SPE_IDX, 0x18);
- if (!is_mmio)
- txwi[8] = FIELD_PREP(MT_TXD8_L_TYPE, fc_type) |
- FIELD_PREP(MT_TXD8_L_SUB_TYPE, fc_stype);
+ if (is_8023)
+ mt7615_mac_write_txwi_8023(dev, txwi, skb, wcid);
+ else
+ mt7615_mac_write_txwi_80211(dev, txwi, skb, key);
return 0;
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.h b/drivers/net/wireless/mediatek/mt76/mt7615/mac.h
index 6bf9da040196..d17bf200d8de 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.h
@@ -186,6 +186,7 @@ enum tx_phy_bandwidth {
#define MT_TXD1_LONG_FORMAT BIT(15)
#define MT_TXD1_HDR_FORMAT GENMASK(14, 13)
#define MT_TXD1_HDR_INFO GENMASK(12, 8)
+#define MT_TXD1_ETH_802_3 BIT(12)
#define MT_TXD1_WLAN_IDX GENMASK(7, 0)
#define MT_TXD2_FIX_RATE BIT(31)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
index 32090e01b4d2..0bef108507db 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
@@ -1034,11 +1034,11 @@ mt7615_mcu_wtbl_sta_add(struct mt7615_phy *phy, struct ieee80211_vif *vif,
if (enable) {
mt76_connac_mcu_wtbl_generic_tlv(&dev->mt76, wskb, vif, sta,
NULL, wtbl_hdr);
+ mt76_connac_mcu_wtbl_hdr_trans_tlv(wskb, vif, &msta->wcid,
+ NULL, wtbl_hdr);
if (sta)
mt76_connac_mcu_wtbl_ht_tlv(&dev->mt76, wskb, sta,
NULL, wtbl_hdr);
- mt76_connac_mcu_wtbl_hdr_trans_tlv(wskb, vif, &msta->wcid,
- NULL, wtbl_hdr);
}
cmd = enable ? MCU_EXT_CMD_WTBL_UPDATE : MCU_EXT_CMD_STA_REC_UPDATE;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c
index cc278d8cb888..f62a072dc24d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/pci_mac.c
@@ -112,7 +112,8 @@ mt7615_write_fw_txp(struct mt7615_dev *dev, struct mt76_tx_info *tx_info,
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) {
--
2.18.0
More information about the Linux-mediatek
mailing list