2021-02-13 17:54:28

by Felix Fietkau

[permalink] [raw]
Subject: [PATCH 1/7] mt76: add support for 802.3 rx frames

Do not try to access the header when receiving them

Signed-off-by: Felix Fietkau <[email protected]>
---
drivers/net/wireless/mediatek/mt76/agg-rx.c | 13 ++++++-----
drivers/net/wireless/mediatek/mt76/mac80211.c | 23 ++++++++++++++-----
drivers/net/wireless/mediatek/mt76/mt76.h | 2 +-
.../net/wireless/mediatek/mt76/mt7603/mac.c | 2 +-
.../net/wireless/mediatek/mt76/mt7615/mac.c | 2 +-
.../net/wireless/mediatek/mt76/mt76x02_mac.c | 4 +++-
.../net/wireless/mediatek/mt76/mt7915/mac.c | 2 +-
.../net/wireless/mediatek/mt76/mt7921/mac.c | 2 +-
8 files changed, 32 insertions(+), 18 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/agg-rx.c b/drivers/net/wireless/mediatek/mt76/agg-rx.c
index df25c00d9e06..144e8a8910ba 100644
--- a/drivers/net/wireless/mediatek/mt76/agg-rx.c
+++ b/drivers/net/wireless/mediatek/mt76/agg-rx.c
@@ -122,6 +122,7 @@ mt76_rx_aggr_check_ctl(struct sk_buff *skb, struct sk_buff_head *frames)
struct ieee80211_bar *bar = mt76_skb_get_hdr(skb);
struct mt76_wcid *wcid = status->wcid;
struct mt76_rx_tid *tid;
+ u8 tidno = status->qos_ctl & IEEE80211_QOS_CTL_TID_MASK;
u16 seqno;

if (!ieee80211_is_ctl(bar->frame_control))
@@ -130,9 +131,9 @@ mt76_rx_aggr_check_ctl(struct sk_buff *skb, struct sk_buff_head *frames)
if (!ieee80211_is_back_req(bar->frame_control))
return;

- status->tid = le16_to_cpu(bar->control) >> 12;
+ status->qos_ctl = tidno = le16_to_cpu(bar->control) >> 12;
seqno = IEEE80211_SEQ_TO_SN(le16_to_cpu(bar->start_seq_num));
- tid = rcu_dereference(wcid->aggr[status->tid]);
+ tid = rcu_dereference(wcid->aggr[tidno]);
if (!tid)
return;

@@ -147,12 +148,12 @@ mt76_rx_aggr_check_ctl(struct sk_buff *skb, struct sk_buff_head *frames)
void mt76_rx_aggr_reorder(struct sk_buff *skb, struct sk_buff_head *frames)
{
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
- struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb);
struct mt76_wcid *wcid = status->wcid;
struct ieee80211_sta *sta;
struct mt76_rx_tid *tid;
bool sn_less;
u16 seqno, head, size, idx;
+ u8 tidno = status->qos_ctl & IEEE80211_QOS_CTL_TID_MASK;
u8 ackp;

__skb_queue_tail(frames, skb);
@@ -161,18 +162,18 @@ void mt76_rx_aggr_reorder(struct sk_buff *skb, struct sk_buff_head *frames)
if (!sta)
return;

- if (!status->aggr) {
+ if (!status->aggr && !(status->flag & RX_FLAG_8023)) {
mt76_rx_aggr_check_ctl(skb, frames);
return;
}

/* not part of a BA session */
- ackp = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_ACK_POLICY_MASK;
+ ackp = status->qos_ctl & IEEE80211_QOS_CTL_ACK_POLICY_MASK;
if (ackp != IEEE80211_QOS_CTL_ACK_POLICY_BLOCKACK &&
ackp != IEEE80211_QOS_CTL_ACK_POLICY_NORMAL)
return;

- tid = rcu_dereference(wcid->aggr[status->tid]);
+ tid = rcu_dereference(wcid->aggr[tidno]);
if (!tid)
return;

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index 696d00d1976c..f9381bd96244 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -737,6 +737,7 @@ mt76_check_ccmp_pn(struct sk_buff *skb)
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
struct mt76_wcid *wcid = status->wcid;
struct ieee80211_hdr *hdr;
+ u8 tidno = status->qos_ctl & IEEE80211_QOS_CTL_TID_MASK;
int ret;

if (!(status->flag & RX_FLAG_DECRYPTED))
@@ -757,12 +758,12 @@ mt76_check_ccmp_pn(struct sk_buff *skb)
}

BUILD_BUG_ON(sizeof(status->iv) != sizeof(wcid->rx_key_pn[0]));
- ret = memcmp(status->iv, wcid->rx_key_pn[status->tid],
+ ret = memcmp(status->iv, wcid->rx_key_pn[tidno],
sizeof(status->iv));
if (ret <= 0)
return -EINVAL; /* replay */

- memcpy(wcid->rx_key_pn[status->tid], status->iv, sizeof(status->iv));
+ memcpy(wcid->rx_key_pn[tidno], status->iv, sizeof(status->iv));

if (status->flag & RX_FLAG_IV_STRIPPED)
status->flag |= RX_FLAG_PN_VALIDATED;
@@ -785,6 +786,7 @@ mt76_airtime_report(struct mt76_dev *dev, struct mt76_rx_status *status,
};
struct ieee80211_sta *sta;
u32 airtime;
+ u8 tidno = status->qos_ctl & IEEE80211_QOS_CTL_TID_MASK;

airtime = ieee80211_calc_rx_airtime(dev->hw, &info, len);
spin_lock(&dev->cc_lock);
@@ -795,7 +797,7 @@ mt76_airtime_report(struct mt76_dev *dev, struct mt76_rx_status *status,
return;

sta = container_of((void *)wcid, struct ieee80211_sta, drv_priv);
- ieee80211_sta_register_airtime(sta, status->tid, 0, airtime);
+ ieee80211_sta_register_airtime(sta, tidno, 0, airtime);
}

static void
@@ -823,7 +825,6 @@ mt76_airtime_flush_ampdu(struct mt76_dev *dev)
static void
mt76_airtime_check(struct mt76_dev *dev, struct sk_buff *skb)
{
- struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb);
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
struct mt76_wcid *wcid = status->wcid;

@@ -831,6 +832,11 @@ mt76_airtime_check(struct mt76_dev *dev, struct sk_buff *skb)
return;

if (!wcid || !wcid->sta) {
+ struct ieee80211_hdr *hdr = mt76_skb_get_hdr(skb);
+
+ if (status->flag & RX_FLAG_8023)
+ return;
+
if (!ether_addr_equal(hdr->addr1, dev->phy.macaddr))
return;

@@ -864,10 +870,12 @@ mt76_check_sta(struct mt76_dev *dev, struct sk_buff *skb)
struct ieee80211_sta *sta;
struct ieee80211_hw *hw;
struct mt76_wcid *wcid = status->wcid;
+ u8 tidno = status->qos_ctl & IEEE80211_QOS_CTL_TID_MASK;
bool ps;

hw = mt76_phy_hw(dev, status->ext_phy);
- if (ieee80211_is_pspoll(hdr->frame_control) && !wcid) {
+ if (ieee80211_is_pspoll(hdr->frame_control) && !wcid &&
+ !(status->flag & RX_FLAG_8023)) {
sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr2, NULL);
if (sta)
wcid = status->wcid = (struct mt76_wcid *)sta->drv_priv;
@@ -885,6 +893,9 @@ mt76_check_sta(struct mt76_dev *dev, struct sk_buff *skb)

wcid->inactive_count = 0;

+ if (status->flag & RX_FLAG_8023)
+ return;
+
if (!test_bit(MT_WCID_FLAG_CHECK_PS, &wcid->flags))
return;

@@ -902,7 +913,7 @@ mt76_check_sta(struct mt76_dev *dev, struct sk_buff *skb)

if (ps && (ieee80211_is_data_qos(hdr->frame_control) ||
ieee80211_is_qos_nullfunc(hdr->frame_control)))
- ieee80211_sta_uapsd_trigger(sta, status->tid);
+ ieee80211_sta_uapsd_trigger(sta, tidno);

if (!!test_bit(MT_WCID_FLAG_PS, &wcid->flags) == ps)
return;
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index 8bf45497cfca..a3455e2e1545 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -499,7 +499,7 @@ struct mt76_rx_status {

u8 ext_phy:1;
u8 aggr:1;
- u8 tid;
+ u8 qos_ctl;
u16 seqno;

u16 freq;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7603/mac.c b/drivers/net/wireless/mediatek/mt76/mt7603/mac.c
index cc4e7bc48294..c29b60a87819 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7603/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7603/mac.c
@@ -651,7 +651,7 @@ mt7603_mac_fill_rx(struct mt7603_dev *dev, struct sk_buff *skb)

status->aggr = unicast &&
!ieee80211_is_qos_nullfunc(hdr->frame_control);
- status->tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
+ status->qos_ctl = *ieee80211_get_qos_ctl(hdr);
status->seqno = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));

return 0;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index 59fdd0fc2ad4..6a835568f4a3 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -458,7 +458,7 @@ static int mt7615_mac_fill_rx(struct mt7615_dev *dev, struct sk_buff *skb)

status->aggr = unicast &&
!ieee80211_is_qos_nullfunc(hdr->frame_control);
- status->tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
+ status->qos_ctl = *ieee80211_get_qos_ctl(hdr);
status->seqno = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));

return 0;
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c
index 771bad60e1bc..0da37867cb64 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c
@@ -770,6 +770,7 @@ int mt76x02_mac_process_rx(struct mt76x02_dev *dev, struct sk_buff *skb,
void *rxi)
{
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
+ struct ieee80211_hdr *hdr;
struct mt76x02_rxwi *rxwi = rxi;
struct mt76x02_sta *sta;
u32 rxinfo = le32_to_cpu(rxwi->rxinfo);
@@ -864,7 +865,8 @@ int mt76x02_mac_process_rx(struct mt76x02_dev *dev, struct sk_buff *skb,
status->freq = dev->mphy.chandef.chan->center_freq;
status->band = dev->mphy.chandef.chan->band;

- status->tid = FIELD_GET(MT_RXWI_TID, tid_sn);
+ hdr = (struct ieee80211_hdr *)skb->data;
+ status->qos_ctl = *ieee80211_get_qos_ctl(hdr);
status->seqno = FIELD_GET(MT_RXWI_SN, tid_sn);

return mt76x02_mac_process_rate(dev, status, rate);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index eb889f8d6fea..2f2023ded8cd 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -556,7 +556,7 @@ int mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)

status->aggr = unicast &&
!ieee80211_is_qos_nullfunc(hdr->frame_control);
- status->tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
+ status->qos_ctl = *ieee80211_get_qos_ctl(hdr);
status->seqno = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));

return 0;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
index 3f9097481a5e..9468c9c3b9cf 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
@@ -530,7 +530,7 @@ int mt7921_mac_fill_rx(struct mt7921_dev *dev, struct sk_buff *skb)

status->aggr = unicast &&
!ieee80211_is_qos_nullfunc(hdr->frame_control);
- status->tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
+ status->qos_ctl = *ieee80211_get_qos_ctl(hdr);
status->seqno = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));

return 0;
--
2.28.0


2021-02-13 17:54:28

by Felix Fietkau

[permalink] [raw]
Subject: [PATCH 4/7] mt76: mt7915: add support for rx decapsulation offload

For AP and Client mode, the hardware can pass received packets as 802.3 frames
that can be passed to the network stack as-is.

Signed-off-by: Felix Fietkau <[email protected]>
---
drivers/net/wireless/mediatek/mt76/mt76.h | 1 +
.../net/wireless/mediatek/mt76/mt7915/init.c | 1 +
.../net/wireless/mediatek/mt76/mt7915/mac.c | 44 +++++++++++++++----
.../net/wireless/mediatek/mt76/mt7915/mac.h | 11 +++++
.../net/wireless/mediatek/mt76/mt7915/main.c | 21 ++++++++-
.../net/wireless/mediatek/mt76/mt7915/mcu.c | 25 +++++++++++
6 files changed, 92 insertions(+), 11 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index 3911d333bb41..d0193cf2f1ce 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -197,6 +197,7 @@ enum mt76_wcid_flags {
MT_WCID_FLAG_CHECK_PS,
MT_WCID_FLAG_PS,
MT_WCID_FLAG_4ADDR,
+ MT_WCID_FLAG_HDR_TRANS,
};

#define MT76_N_WCIDS 288
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index 34a4fee24c48..c599b44a728c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -109,6 +109,7 @@ mt7915_init_wiphy(struct ieee80211_hw *hw)

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

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 22d4f16cf830..71ccefcdc89c 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -325,6 +325,10 @@ int mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
u32 csum_mask = MT_RXD0_NORMAL_IP_SUM | MT_RXD0_NORMAL_UDP_TCP_SUM;
bool unicast, insert_ccmp_hdr = false;
u8 remove_pad, amsdu_info;
+ bool hdr_trans;
+ u16 seq_ctrl = 0;
+ u8 qos_ctl = 0;
+ __le16 fc = 0;
int i, idx;

memset(status, 0, sizeof(*status));
@@ -346,6 +350,7 @@ int mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)

unicast = FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, rxd3) == MT_RXD3_NORMAL_U2M;
idx = FIELD_GET(MT_RXD1_NORMAL_WLAN_IDX, rxd1);
+ hdr_trans = rxd2 & MT_RXD2_NORMAL_HDR_TRANS;
status->wcid = mt7915_rx_get_wcid(dev, idx, unicast);

if (status->wcid) {
@@ -404,6 +409,13 @@ int mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)

rxd += 6;
if (rxd1 & MT_RXD1_NORMAL_GROUP_4) {
+ u32 v0 = le32_to_cpu(rxd[0]);
+ u32 v2 = le32_to_cpu(rxd[2]);
+
+ fc = cpu_to_le16(FIELD_GET(MT_RXD6_FRAME_CONTROL, v0));
+ qos_ctl = FIELD_GET(MT_RXD8_QOS_CTL, v2);
+ seq_ctrl = FIELD_GET(MT_RXD8_SEQ_CTRL, v2);
+
rxd += 4;
if ((u8 *)rxd - skb->data >= skb->len)
return -EINVAL;
@@ -555,28 +567,42 @@ int mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
if (status->amsdu) {
status->first_amsdu = amsdu_info == MT_RXD4_FIRST_AMSDU_FRAME;
status->last_amsdu = amsdu_info == MT_RXD4_LAST_AMSDU_FRAME;
- memmove(skb->data + 2, skb->data,
- ieee80211_get_hdrlen_from_skb(skb));
- skb_pull(skb, 2);
+ if (!hdr_trans) {
+ memmove(skb->data + 2, skb->data,
+ ieee80211_get_hdrlen_from_skb(skb));
+ skb_pull(skb, 2);
+ }
}

- if (insert_ccmp_hdr) {
+ if (insert_ccmp_hdr && !hdr_trans) {
u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1);

mt76_insert_ccmp_hdr(skb, key_id);
}

+ if (!hdr_trans) {
+ hdr = mt76_skb_get_hdr(skb);
+ fc = hdr->frame_control;
+ if (ieee80211_is_data_qos(fc)) {
+ seq_ctrl = le16_to_cpu(hdr->seq_ctrl);
+ qos_ctl = *ieee80211_get_qos_ctl(hdr);
+ }
+ } else {
+ status->flag &= ~(RX_FLAG_RADIOTAP_HE |
+ RX_FLAG_RADIOTAP_HE_MU);
+ status->flag |= RX_FLAG_8023;
+ }
+
if (rxv && status->flag & RX_FLAG_RADIOTAP_HE)
mt7915_mac_decode_he_radiotap(skb, status, rxv, mode);

- hdr = mt76_skb_get_hdr(skb);
- if (!status->wcid || !ieee80211_is_data_qos(hdr->frame_control))
+ if (!status->wcid || !ieee80211_is_data_qos(fc))
return 0;

status->aggr = unicast &&
- !ieee80211_is_qos_nullfunc(hdr->frame_control);
- status->qos_ctl = *ieee80211_get_qos_ctl(hdr);
- status->seqno = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));
+ !ieee80211_is_qos_nullfunc(fc);
+ status->qos_ctl = qos_ctl;
+ status->seqno = IEEE80211_SEQ_TO_SN(seq_ctrl);

return 0;
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
index 6ad8af835fd4..0f929fb53027 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
@@ -101,6 +101,17 @@ enum rx_pkt_type {

#define MT_RXV_HDR_BAND_IDX BIT(24)

+/* RXD GROUP4 */
+#define MT_RXD6_FRAME_CONTROL GENMASK(15, 0)
+#define MT_RXD6_TA_LO GENMASK(31, 16)
+
+#define MT_RXD7_TA_HI GENMASK(31, 0)
+
+#define MT_RXD8_SEQ_CTRL GENMASK(15, 0)
+#define MT_RXD8_QOS_CTL GENMASK(31, 16)
+
+#define MT_RXD9_HT_CONTROL GENMASK(31, 0)
+
/* P-RXV */
#define MT_PRXV_TX_RATE GENMASK(6, 0)
#define MT_PRXV_TX_DCM BIT(4)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
index d4969b2e1ffb..2406733f542d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
@@ -34,14 +34,14 @@ static int mt7915_start(struct ieee80211_hw *hw)

if (!running) {
mt7915_mcu_set_pm(dev, 0, 0);
- mt7915_mcu_set_mac(dev, 0, true, false);
+ mt7915_mcu_set_mac(dev, 0, true, true);
mt7915_mcu_set_scs(dev, 0, true);
mt7915_mac_enable_nf(dev, 0);
}

if (phy != &dev->phy) {
mt7915_mcu_set_pm(dev, 1, 0);
- mt7915_mcu_set_mac(dev, 1, true, false);
+ mt7915_mcu_set_mac(dev, 1, true, true);
mt7915_mcu_set_scs(dev, 1, true);
mt7915_mac_enable_nf(dev, 1);
}
@@ -888,6 +888,22 @@ static void mt7915_sta_set_4addr(struct ieee80211_hw *hw,
mt7915_mcu_sta_update_hdr_trans(dev, vif, sta);
}

+static void mt7915_sta_set_decap_offload(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ bool enabled)
+{
+ struct mt7915_dev *dev = mt7915_hw_dev(hw);
+ struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
+
+ if (enabled)
+ set_bit(MT_WCID_FLAG_HDR_TRANS, &msta->wcid.flags);
+ else
+ clear_bit(MT_WCID_FLAG_HDR_TRANS, &msta->wcid.flags);
+
+ mt7915_mcu_sta_update_hdr_trans(dev, vif, sta);
+}
+
const struct ieee80211_ops mt7915_ops = {
.tx = mt7915_tx,
.start = mt7915_start,
@@ -920,6 +936,7 @@ const struct ieee80211_ops mt7915_ops = {
.set_coverage_class = mt7915_set_coverage_class,
.sta_statistics = mt7915_sta_statistics,
.sta_set_4addr = mt7915_sta_set_4addr,
+ .sta_set_decap_offload = mt7915_sta_set_decap_offload,
CFG80211_TESTMODE_CMD(mt76_testmode_cmd)
CFG80211_TESTMODE_DUMP(mt76_testmode_dump)
#ifdef CONFIG_MAC80211_DEBUGFS
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 195929242b72..6a8a1aa50756 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -1685,6 +1685,7 @@ mt7915_mcu_wtbl_hdr_trans_tlv(struct sk_buff *skb, struct ieee80211_vif *vif,
return;

msta = (struct mt7915_sta *)sta->drv_priv;
+ htr->no_rx_trans = !test_bit(MT_WCID_FLAG_HDR_TRANS, &msta->wcid.flags);
if (test_bit(MT_WCID_FLAG_4ADDR, &msta->wcid.flags)) {
htr->to_ds = true;
htr->from_ds = true;
@@ -2869,6 +2870,27 @@ void mt7915_mcu_exit(struct mt7915_dev *dev)
skb_queue_purge(&dev->mt76.mcu.res_q);
}

+static int
+mt7915_mcu_set_rx_hdr_trans_blacklist(struct mt7915_dev *dev, int band)
+{
+ struct {
+ u8 operation;
+ u8 count;
+ u8 _rsv[2];
+ u8 index;
+ u8 enable;
+ __le16 etype;
+ } req = {
+ .operation = 1,
+ .count = 1,
+ .enable = 1,
+ .etype = cpu_to_le16(ETH_P_PAE),
+ };
+
+ return mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD(RX_HDR_TRANS),
+ &req, sizeof(req), false);
+}
+
int mt7915_mcu_set_mac(struct mt7915_dev *dev, int band,
bool enable, bool hdr_trans)
{
@@ -2899,6 +2921,9 @@ int mt7915_mcu_set_mac(struct mt7915_dev *dev, int band,
if (ret)
return ret;

+ if (hdr_trans)
+ mt7915_mcu_set_rx_hdr_trans_blacklist(dev, band);
+
return mt76_mcu_send_msg(&dev->mt76, MCU_EXT_CMD(MAC_INIT_CTRL),
&req_mac, sizeof(req_mac), true);
}
--
2.28.0

2021-02-13 17:54:31

by Felix Fietkau

[permalink] [raw]
Subject: [PATCH 6/7] mt76: mt7615: fix tx skb dma unmap

The first pointer in the txp needs to be unmapped as well, otherwise it will
leak DMA mapping entries

Fixes: 27d5c528a7ca ("mt76: fix double DMA unmap of the first buffer on 7615/7915")
Signed-off-by: Felix Fietkau <[email protected]>
---
drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index c97ec70772f3..9bae2f66e1ce 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -690,7 +690,7 @@ mt7615_txp_skb_unmap_fw(struct mt76_dev *dev, struct mt7615_fw_txp *txp)
{
int i;

- for (i = 1; i < txp->nbuf; i++)
+ for (i = 0; i < txp->nbuf; i++)
dma_unmap_single(dev->dev, le32_to_cpu(txp->buf[i]),
le16_to_cpu(txp->len[i]), DMA_TO_DEVICE);
}
--
2.28.0

2021-02-13 17:54:47

by Felix Fietkau

[permalink] [raw]
Subject: [PATCH 2/7] mt76: mt7915: enable hw rx-amsdu de-aggregation

From: Lorenzo Bianconi <[email protected]>

Enable hw rx-amsdu de-aggregation support available in 7915 devices.
This is a preliminary patch to enable rx checksum offload

Signed-off-by: Lorenzo Bianconi <[email protected]>
---
drivers/net/wireless/mediatek/mt76/mac80211.c | 55 ++++++++++++++++++-
drivers/net/wireless/mediatek/mt76/mt76.h | 6 ++
.../net/wireless/mediatek/mt76/mt7915/init.c | 4 +-
.../net/wireless/mediatek/mt76/mt7915/mac.c | 16 +++++-
.../net/wireless/mediatek/mt76/mt7915/mac.h | 4 ++
5 files changed, 81 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index f9381bd96244..a41e8cc3a8b1 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -508,6 +508,45 @@ void mt76_free_device(struct mt76_dev *dev)
}
EXPORT_SYMBOL_GPL(mt76_free_device);

+static void mt76_rx_release_burst(struct mt76_dev *dev, enum mt76_rxq_id q,
+ struct sk_buff *skb)
+{
+ struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
+ struct sk_buff *nskb = dev->rx_amsdu[q].head;
+
+ /* first amsdu subframe */
+ if (status->first_amsdu) {
+ dev->rx_amsdu[q].tail = &skb_shinfo(skb)->frag_list;
+ dev->rx_amsdu[q].seqno = status->seqno;
+ dev->rx_amsdu[q].head = skb;
+ goto enqueue;
+ }
+
+ /* ampdu or out-of-order amsdu subframes */
+ if (!status->amsdu || status->seqno != dev->rx_amsdu[q].seqno) {
+ /* release pending frames */
+ if (dev->rx_amsdu[q].head)
+ __skb_queue_tail(&dev->rx_skb[q],
+ dev->rx_amsdu[q].head);
+ nskb = skb;
+ goto reset_burst;
+ }
+
+ /* trailing amsdu subframes */
+ *dev->rx_amsdu[q].tail = skb;
+ if (!status->last_amsdu) {
+ dev->rx_amsdu[q].tail = &skb->next;
+ return;
+ }
+
+reset_burst:
+ dev->rx_amsdu[q].head = NULL;
+ dev->rx_amsdu[q].tail = NULL;
+enqueue:
+ if (nskb)
+ __skb_queue_tail(&dev->rx_skb[q], nskb);
+}
+
void mt76_rx(struct mt76_dev *dev, enum mt76_rxq_id q, struct sk_buff *skb)
{
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
@@ -525,7 +564,8 @@ void mt76_rx(struct mt76_dev *dev, enum mt76_rxq_id q, struct sk_buff *skb)
phy->test.rx_stats.fcs_error[q]++;
}
#endif
- __skb_queue_tail(&dev->rx_skb[q], skb);
+
+ mt76_rx_release_burst(dev, q, skb);
}
EXPORT_SYMBOL_GPL(mt76_rx);

@@ -937,13 +977,26 @@ void mt76_rx_complete(struct mt76_dev *dev, struct sk_buff_head *frames,

spin_lock(&dev->rx_lock);
while ((skb = __skb_dequeue(frames)) != NULL) {
+ struct sk_buff *nskb = skb_shinfo(skb)->frag_list;
+
if (mt76_check_ccmp_pn(skb)) {
dev_kfree_skb(skb);
continue;
}

+ skb_shinfo(skb)->frag_list = NULL;
mt76_rx_convert(dev, skb, &hw, &sta);
ieee80211_rx_list(hw, sta, skb, &list);
+
+ /* subsequent amsdu frames */
+ while (nskb) {
+ skb = nskb;
+ nskb = nskb->next;
+ skb->next = NULL;
+
+ mt76_rx_convert(dev, skb, &hw, &sta);
+ ieee80211_rx_list(hw, sta, skb, &list);
+ }
}
spin_unlock(&dev->rx_lock);

diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index a3455e2e1545..3911d333bb41 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -507,6 +507,7 @@ struct mt76_rx_status {
u8 enc_flags;
u8 encoding:2, bw:3, he_ru:3;
u8 he_gi:2, he_dcm:1;
+ u8 amsdu:1, first_amsdu:1, last_amsdu:1;
u8 rate_idx;
u8 nss;
u8 band;
@@ -631,6 +632,11 @@ struct mt76_dev {
spinlock_t rx_lock;
struct napi_struct napi[__MT_RXQ_MAX];
struct sk_buff_head rx_skb[__MT_RXQ_MAX];
+ struct {
+ struct sk_buff *head;
+ struct sk_buff **tail;
+ u16 seqno;
+ } rx_amsdu[__MT_RXQ_MAX];

struct list_head txwi_cache;
struct mt76_queue *q_mcu[__MT_MCUQ_MAX];
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index ad4e5b95158b..76dfcb76fb03 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -153,8 +153,8 @@ static void mt7915_mac_init(struct mt7915_dev *dev)
int i;

mt76_rmw_field(dev, MT_MDP_DCR1, MT_MDP_DCR1_MAX_RX_LEN, 1536);
- /* disable hardware de-agg */
- mt76_clear(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);
+ /* enable hardware de-agg */
+ mt76_set(dev, MT_MDP_DCR0, MT_MDP_DCR0_DAMSDU_EN);

for (i = 0; i < MT7915_WTBL_SIZE; i++)
mt7915_mac_wtbl_update(dev, i,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index 2f2023ded8cd..2f96f31e33c9 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -320,8 +320,9 @@ int mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
u32 rxd1 = le32_to_cpu(rxd[1]);
u32 rxd2 = le32_to_cpu(rxd[2]);
u32 rxd3 = le32_to_cpu(rxd[3]);
+ u32 rxd4 = le32_to_cpu(rxd[4]);
bool unicast, insert_ccmp_hdr = false;
- u8 remove_pad;
+ u8 remove_pad, amsdu_info;
int i, idx;

memset(status, 0, sizeof(*status));
@@ -338,6 +339,9 @@ int mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)
if (!test_bit(MT76_STATE_RUNNING, &mphy->state))
return -EINVAL;

+ if (rxd2 & MT_RXD2_NORMAL_AMSDU_ERR)
+ return -EINVAL;
+
unicast = FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, rxd3) == MT_RXD3_NORMAL_U2M;
idx = FIELD_GET(MT_RXD1_NORMAL_WLAN_IDX, rxd1);
status->wcid = mt7915_rx_get_wcid(dev, idx, unicast);
@@ -541,6 +545,16 @@ int mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb)

skb_pull(skb, (u8 *)rxd - skb->data + 2 * remove_pad);

+ amsdu_info = FIELD_GET(MT_RXD4_NORMAL_PAYLOAD_FORMAT, rxd4);
+ status->amsdu = !!amsdu_info;
+ if (status->amsdu) {
+ status->first_amsdu = amsdu_info == MT_RXD4_FIRST_AMSDU_FRAME;
+ status->last_amsdu = amsdu_info == MT_RXD4_LAST_AMSDU_FRAME;
+ memmove(skb->data + 2, skb->data,
+ ieee80211_get_hdrlen_from_skb(skb));
+ skb_pull(skb, 2);
+ }
+
if (insert_ccmp_hdr) {
u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1);

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
index 96ff3fb0d1f3..6ad8af835fd4 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
@@ -86,6 +86,10 @@ enum rx_pkt_type {

/* RXD DW4 */
#define MT_RXD4_NORMAL_PAYLOAD_FORMAT GENMASK(1, 0)
+#define MT_RXD4_FIRST_AMSDU_FRAME GENMASK(1, 0)
+#define MT_RXD4_MID_AMSDU_FRAME BIT(1)
+#define MT_RXD4_LAST_AMSDU_FRAME BIT(0)
+
#define MT_RXD4_NORMAL_PATTERN_DROP BIT(9)
#define MT_RXD4_NORMAL_CLS BIT(10)
#define MT_RXD4_NORMAL_OFLD GENMASK(12, 11)
--
2.28.0

2021-02-13 17:57:40

by Felix Fietkau

[permalink] [raw]
Subject: [PATCH 7/7] mt76: mt7915: fix tx skb dma unmap

The first pointer in the txp needs to be unmapped as well, otherwise it will
leak DMA mapping entries

Reported-by: Ben Greear <[email protected]>
Fixes: 27d5c528a7ca ("mt76: fix double DMA unmap of the first buffer on 7615/7915")
Signed-off-by: Felix Fietkau <[email protected]>
---
drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index 71ccefcdc89c..b3168dd3baed 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -1136,7 +1136,7 @@ void mt7915_txp_skb_unmap(struct mt76_dev *dev,
int i;

txp = mt7915_txwi_to_txp(dev, t);
- for (i = 1; i < txp->nbuf; i++)
+ for (i = 0; i < txp->nbuf; i++)
dma_unmap_single(dev->dev, le32_to_cpu(txp->buf[i]),
le16_to_cpu(txp->len[i]), DMA_TO_DEVICE);
}
--
2.28.0