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path: root/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
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-rw-r--r--drivers/net/wireless/mediatek/mt76/mt7921/mac.c136
1 files changed, 111 insertions, 25 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
index db3302b1576a..ec10f95a4649 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
@@ -218,10 +218,9 @@ mt7921_mac_decode_he_radiotap_ru(struct mt76_rx_status *status,
}
static void
-mt7921_mac_decode_he_mu_radiotap(struct sk_buff *skb,
- struct mt76_rx_status *status,
- __le32 *rxv)
+mt7921_mac_decode_he_mu_radiotap(struct sk_buff *skb, __le32 *rxv)
{
+ struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
static const struct ieee80211_radiotap_he_mu mu_known = {
.flags1 = HE_BITS(MU_FLAGS1_SIG_B_MCS_KNOWN) |
HE_BITS(MU_FLAGS1_SIG_B_DCM_KNOWN) |
@@ -233,6 +232,8 @@ mt7921_mac_decode_he_mu_radiotap(struct sk_buff *skb,
};
struct ieee80211_radiotap_he_mu *he_mu;
+ status->flag |= RX_FLAG_RADIOTAP_HE_MU;
+
he_mu = skb_push(skb, sizeof(mu_known));
memcpy(he_mu, &mu_known, sizeof(mu_known));
@@ -263,10 +264,9 @@ mt7921_mac_decode_he_mu_radiotap(struct sk_buff *skb,
}
static void
-mt7921_mac_decode_he_radiotap(struct sk_buff *skb,
- struct mt76_rx_status *status,
- __le32 *rxv, u32 phy)
+mt7921_mac_decode_he_radiotap(struct sk_buff *skb, __le32 *rxv, u32 mode)
{
+ struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
static const struct ieee80211_radiotap_he known = {
.data1 = HE_BITS(DATA1_DATA_MCS_KNOWN) |
HE_BITS(DATA1_DATA_DCM_KNOWN) |
@@ -284,6 +284,8 @@ mt7921_mac_decode_he_radiotap(struct sk_buff *skb,
struct ieee80211_radiotap_he *he = NULL;
u32 ltf_size = le32_get_bits(rxv[2], MT_CRXV_HE_LTF_SIZE) + 1;
+ status->flag |= RX_FLAG_RADIOTAP_HE;
+
he = skb_push(skb, sizeof(known));
memcpy(he, &known, sizeof(known));
@@ -298,7 +300,7 @@ mt7921_mac_decode_he_radiotap(struct sk_buff *skb,
he->data6 = HE_PREP(DATA6_TXOP, TXOP_DUR, rxv[14]) |
HE_PREP(DATA6_DOPPLER, DOPPLER, rxv[14]);
- switch (phy) {
+ switch (mode) {
case MT_PHY_TYPE_HE_SU:
he->data1 |= HE_BITS(DATA1_FORMAT_SU) |
HE_BITS(DATA1_UL_DL_KNOWN) |
@@ -322,6 +324,7 @@ mt7921_mac_decode_he_radiotap(struct sk_buff *skb,
he->data4 |= HE_PREP(DATA4_MU_STA_ID, MU_AID, rxv[7]);
mt7921_mac_decode_he_radiotap_ru(status, he, rxv);
+ mt7921_mac_decode_he_mu_radiotap(skb, rxv);
break;
case MT_PHY_TYPE_HE_TB:
he->data1 |= HE_BITS(DATA1_FORMAT_TRIG) |
@@ -395,6 +398,81 @@ mt7921_mac_assoc_rssi(struct mt7921_dev *dev, struct sk_buff *skb)
mt7921_mac_rssi_iter, skb);
}
+/* The HW does not translate the mac header to 802.3 for mesh point */
+static int mt7921_reverse_frag0_hdr_trans(struct sk_buff *skb, u16 hdr_gap)
+{
+ struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
+ struct mt7921_sta *msta = (struct mt7921_sta *)status->wcid;
+ struct ieee80211_sta *sta;
+ struct ieee80211_vif *vif;
+ struct ieee80211_hdr hdr;
+ struct ethhdr eth_hdr;
+ __le32 *rxd = (__le32 *)skb->data;
+ __le32 qos_ctrl, ht_ctrl;
+
+ if (FIELD_GET(MT_RXD3_NORMAL_ADDR_TYPE, le32_to_cpu(rxd[3])) !=
+ MT_RXD3_NORMAL_U2M)
+ return -EINVAL;
+
+ if (!(le32_to_cpu(rxd[1]) & MT_RXD1_NORMAL_GROUP_4))
+ return -EINVAL;
+
+ if (!msta || !msta->vif)
+ return -EINVAL;
+
+ sta = container_of((void *)msta, struct ieee80211_sta, drv_priv);
+ vif = container_of((void *)msta->vif, struct ieee80211_vif, drv_priv);
+
+ /* store the info from RXD and ethhdr to avoid being overridden */
+ memcpy(&eth_hdr, skb->data + hdr_gap, sizeof(eth_hdr));
+ hdr.frame_control = FIELD_GET(MT_RXD6_FRAME_CONTROL, rxd[6]);
+ hdr.seq_ctrl = FIELD_GET(MT_RXD8_SEQ_CTRL, rxd[8]);
+ qos_ctrl = FIELD_GET(MT_RXD8_QOS_CTL, rxd[8]);
+ ht_ctrl = FIELD_GET(MT_RXD9_HT_CONTROL, rxd[9]);
+
+ hdr.duration_id = 0;
+ ether_addr_copy(hdr.addr1, vif->addr);
+ ether_addr_copy(hdr.addr2, sta->addr);
+ switch (le16_to_cpu(hdr.frame_control) &
+ (IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS)) {
+ case 0:
+ ether_addr_copy(hdr.addr3, vif->bss_conf.bssid);
+ break;
+ case IEEE80211_FCTL_FROMDS:
+ ether_addr_copy(hdr.addr3, eth_hdr.h_source);
+ break;
+ case IEEE80211_FCTL_TODS:
+ ether_addr_copy(hdr.addr3, eth_hdr.h_dest);
+ break;
+ case IEEE80211_FCTL_TODS | IEEE80211_FCTL_FROMDS:
+ ether_addr_copy(hdr.addr3, eth_hdr.h_dest);
+ ether_addr_copy(hdr.addr4, eth_hdr.h_source);
+ break;
+ default:
+ break;
+ }
+
+ skb_pull(skb, hdr_gap + sizeof(struct ethhdr) - 2);
+ if (eth_hdr.h_proto == htons(ETH_P_AARP) ||
+ eth_hdr.h_proto == htons(ETH_P_IPX))
+ ether_addr_copy(skb_push(skb, ETH_ALEN), bridge_tunnel_header);
+ else if (eth_hdr.h_proto >= htons(ETH_P_802_3_MIN))
+ ether_addr_copy(skb_push(skb, ETH_ALEN), rfc1042_header);
+ else
+ skb_pull(skb, 2);
+
+ if (ieee80211_has_order(hdr.frame_control))
+ memcpy(skb_push(skb, 2), &ht_ctrl, 2);
+ if (ieee80211_is_data_qos(hdr.frame_control))
+ memcpy(skb_push(skb, 2), &qos_ctrl, 2);
+ if (ieee80211_has_a4(hdr.frame_control))
+ memcpy(skb_push(skb, sizeof(hdr)), &hdr, sizeof(hdr));
+ else
+ memcpy(skb_push(skb, sizeof(hdr) - 6), &hdr, sizeof(hdr) - 6);
+
+ return 0;
+}
+
static int
mt7921_mac_fill_rx(struct mt7921_dev *dev, struct sk_buff *skb)
{
@@ -402,11 +480,11 @@ mt7921_mac_fill_rx(struct mt7921_dev *dev, struct sk_buff *skb)
struct mt76_rx_status *status = (struct mt76_rx_status *)skb->cb;
bool hdr_trans, unicast, insert_ccmp_hdr = false;
u8 chfreq, qos_ctl = 0, remove_pad, amsdu_info;
+ u16 hdr_gap;
__le32 *rxv = NULL, *rxd = (__le32 *)skb->data;
struct mt76_phy *mphy = &dev->mt76.phy;
struct mt7921_phy *phy = &dev->phy;
struct ieee80211_supported_band *sband;
- struct ieee80211_hdr *hdr;
u32 rxd0 = le32_to_cpu(rxd[0]);
u32 rxd1 = le32_to_cpu(rxd[1]);
u32 rxd2 = le32_to_cpu(rxd[2]);
@@ -428,10 +506,17 @@ mt7921_mac_fill_rx(struct mt7921_dev *dev, struct sk_buff *skb)
if (rxd2 & MT_RXD2_NORMAL_AMSDU_ERR)
return -EINVAL;
+ hdr_trans = rxd2 & MT_RXD2_NORMAL_HDR_TRANS;
+ if (hdr_trans && (rxd1 & MT_RXD1_NORMAL_CM))
+ return -EINVAL;
+
+ /* ICV error or CCMP/BIP/WPI MIC error */
+ if (rxd1 & MT_RXD1_NORMAL_ICV_ERR)
+ status->flag |= RX_FLAG_ONLY_MONITOR;
+
chfreq = FIELD_GET(MT_RXD3_NORMAL_CH_FREQ, rxd3);
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 = mt7921_rx_get_wcid(dev, idx, unicast);
if (status->wcid) {
@@ -612,15 +697,12 @@ mt7921_mac_fill_rx(struct mt7921_dev *dev, struct sk_buff *skb)
return -EINVAL;
break;
case MT_PHY_TYPE_HE_MU:
- status->flag |= RX_FLAG_RADIOTAP_HE_MU;
- fallthrough;
case MT_PHY_TYPE_HE_SU:
case MT_PHY_TYPE_HE_EXT_SU:
case MT_PHY_TYPE_HE_TB:
status->nss =
FIELD_GET(MT_PRXV_NSTS, v0) + 1;
status->encoding = RX_ENC_HE;
- status->flag |= RX_FLAG_RADIOTAP_HE;
i &= GENMASK(3, 0);
if (gi <= NL80211_RATE_INFO_HE_GI_3_2)
@@ -668,14 +750,21 @@ mt7921_mac_fill_rx(struct mt7921_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;
- if (!hdr_trans) {
+ }
+
+ hdr_gap = (u8 *)rxd - skb->data + 2 * remove_pad;
+ if (hdr_trans && ieee80211_has_morefrags(fc)) {
+ if (mt7921_reverse_frag0_hdr_trans(skb, hdr_gap))
+ return -EINVAL;
+ hdr_trans = false;
+ } else {
+ skb_pull(skb, hdr_gap);
+ if (!hdr_trans && status->amsdu) {
memmove(skb->data + 2, skb->data,
ieee80211_get_hdrlen_from_skb(skb));
skb_pull(skb, 2);
@@ -683,6 +772,8 @@ mt7921_mac_fill_rx(struct mt7921_dev *dev, struct sk_buff *skb)
}
if (!hdr_trans) {
+ struct ieee80211_hdr *hdr;
+
if (insert_ccmp_hdr) {
u8 key_id = FIELD_GET(MT_RXD1_NORMAL_KEY_ID, rxd1);
@@ -696,19 +787,13 @@ mt7921_mac_fill_rx(struct mt7921_dev *dev, struct sk_buff *skb)
qos_ctl = *ieee80211_get_qos_ctl(hdr);
}
} else {
- status->flag &= ~(RX_FLAG_RADIOTAP_HE |
- RX_FLAG_RADIOTAP_HE_MU);
status->flag |= RX_FLAG_8023;
}
mt7921_mac_assoc_rssi(dev, skb);
- if (rxv && status->flag & RX_FLAG_RADIOTAP_HE) {
- mt7921_mac_decode_he_radiotap(skb, status, rxv, mode);
-
- if (status->flag & RX_FLAG_RADIOTAP_HE_MU)
- mt7921_mac_decode_he_mu_radiotap(skb, status, rxv);
- }
+ if (rxv && mode >= MT_PHY_TYPE_HE_SU && !(status->flag & RX_FLAG_8023))
+ mt7921_mac_decode_he_radiotap(skb, rxv, mode);
if (!status->wcid || !ieee80211_is_data_qos(fc))
return 0;
@@ -903,7 +988,7 @@ void mt7921_mac_write_txwi(struct mt7921_dev *dev, __le32 *txwi,
mt7921_mac_write_txwi_80211(dev, txwi, skb, key);
if (txwi[2] & cpu_to_le32(MT_TXD2_FIX_RATE)) {
- int rateidx = ffs(vif->bss_conf.basic_rates) - 1;
+ int rateidx = vif ? ffs(vif->bss_conf.basic_rates) - 1 : 0;
u16 rate, mode;
/* hardware won't add HTC for mgmt/ctrl frame */
@@ -1065,7 +1150,7 @@ out:
return !!skb;
}
-static void mt7921_mac_add_txs(struct mt7921_dev *dev, void *data)
+void mt7921_mac_add_txs(struct mt7921_dev *dev, void *data)
{
struct mt7921_sta *msta = NULL;
struct mt76_wcid *wcid;
@@ -1314,6 +1399,7 @@ void mt7921_mac_reset_work(struct work_struct *work)
}
dev->hw_full_reset = false;
+ pm->suspended = false;
ieee80211_wake_queues(hw);
ieee80211_iterate_active_interfaces(hw,
IEEE80211_IFACE_ITER_RESUME_ALL,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.