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List: linux-wireless
Subject: [RFC 08/10] mt76: move mt76x02_mac_process_rx in mt76x02-lib module
From: Lorenzo Bianconi <lorenzo.bianconi () redhat ! com>
Date: 2018-09-30 9:57:04
Message-ID: 20180930095706.28428-9-lorenzo.bianconi () redhat ! com
[Download RAW message or body]
Move mt76x02_mac_process_rx utility routine in mt76x02-lib
in order to by resused by mt76x0 driver for rxwi parsing.
Add stream number check in mt76x02_mac_process_rx since mt76x0
chipsets are 1x1:1
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
---
.../net/wireless/mediatek/mt76/mt76x02_mac.c | 105 ++++++++++++++++++
.../net/wireless/mediatek/mt76/mt76x02_mac.h | 4 +
.../wireless/mediatek/mt76/mt76x2/common.c | 2 +-
.../net/wireless/mediatek/mt76/mt76x2/mac.c | 96 ----------------
.../net/wireless/mediatek/mt76/mt76x2/mac.h | 3 -
.../wireless/mediatek/mt76/mt76x2/mt76x2.h | 1 -
6 files changed, 110 insertions(+), 101 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c \
b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c index 9c1667dfc457..675bb651ef9d \
100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.c
@@ -582,3 +582,108 @@ void mt76x02_mac_setaddr(struct mt76_dev *dev, u8 *addr)
FIELD_PREP(MT_MAC_ADDR_DW1_U2ME_MASK, 0xff));
}
EXPORT_SYMBOL_GPL(mt76x02_mac_setaddr);
+
+static int
+mt76x02_mac_get_rssi(struct mt76x02_dev *dev, s8 rssi, int chain)
+{
+ struct mt76x02_rx_freq_cal *cal = &dev->cal.rx;
+
+ rssi += cal->rssi_offset[chain];
+ rssi -= cal->lna_gain;
+
+ return rssi;
+}
+
+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 mt76x02_rxwi *rxwi = rxi;
+ struct mt76x02_sta *sta;
+ u32 rxinfo = le32_to_cpu(rxwi->rxinfo);
+ u32 ctl = le32_to_cpu(rxwi->ctl);
+ u16 rate = le16_to_cpu(rxwi->rate);
+ u16 tid_sn = le16_to_cpu(rxwi->tid_sn);
+ bool unicast = rxwi->rxinfo & cpu_to_le32(MT_RXINFO_UNICAST);
+ int i, pad_len = 0, nstreams = dev->mt76.chainmask & 0xf;
+ s8 signal;
+ u8 pn_len;
+ u8 wcid;
+ int len;
+
+ if (!test_bit(MT76_STATE_RUNNING, &dev->mt76.state))
+ return -EINVAL;
+
+ if (rxinfo & MT_RXINFO_L2PAD)
+ pad_len += 2;
+
+ if (rxinfo & MT_RXINFO_DECRYPT) {
+ status->flag |= RX_FLAG_DECRYPTED;
+ status->flag |= RX_FLAG_MMIC_STRIPPED;
+ status->flag |= RX_FLAG_MIC_STRIPPED;
+ status->flag |= RX_FLAG_IV_STRIPPED;
+ }
+
+ wcid = FIELD_GET(MT_RXWI_CTL_WCID, ctl);
+ sta = mt76x02_rx_get_sta(&dev->mt76, wcid);
+ status->wcid = mt76x02_rx_get_sta_wcid(sta, unicast);
+
+ len = FIELD_GET(MT_RXWI_CTL_MPDU_LEN, ctl);
+ pn_len = FIELD_GET(MT_RXINFO_PN_LEN, rxinfo);
+ if (pn_len) {
+ int offset = ieee80211_get_hdrlen_from_skb(skb) + pad_len;
+ u8 *data = skb->data + offset;
+
+ status->iv[0] = data[7];
+ status->iv[1] = data[6];
+ status->iv[2] = data[5];
+ status->iv[3] = data[4];
+ status->iv[4] = data[1];
+ status->iv[5] = data[0];
+
+ /*
+ * Driver CCMP validation can't deal with fragments.
+ * Let mac80211 take care of it.
+ */
+ if (rxinfo & MT_RXINFO_FRAG) {
+ status->flag &= ~RX_FLAG_IV_STRIPPED;
+ } else {
+ pad_len += pn_len << 2;
+ len -= pn_len << 2;
+ }
+ }
+
+ mt76x02_remove_hdr_pad(skb, pad_len);
+
+ if ((rxinfo & MT_RXINFO_BA) && !(rxinfo & MT_RXINFO_NULL))
+ status->aggr = true;
+
+ if (WARN_ON_ONCE(len > skb->len))
+ return -EINVAL;
+
+ pskb_trim(skb, len);
+
+ status->chains = BIT(0);
+ signal = mt76x02_mac_get_rssi(dev, rxwi->rssi[0], 0);
+ for (i = 1; i < nstreams; i++) {
+ status->chains |= BIT(i);
+ status->chain_signal[i] = mt76x02_mac_get_rssi(dev,
+ rxwi->rssi[i],
+ i);
+ signal = max_t(s8, signal, status->chain_signal[i]);
+ }
+ status->signal = signal;
+ status->freq = dev->mt76.chandef.chan->center_freq;
+ status->band = dev->mt76.chandef.chan->band;
+
+ status->tid = FIELD_GET(MT_RXWI_TID, tid_sn);
+ status->seqno = FIELD_GET(MT_RXWI_SN, tid_sn);
+
+ if (sta) {
+ ewma_signal_add(&sta->rssi, status->signal);
+ sta->inactive_count = 0;
+ }
+
+ return mt76x02_mac_process_rate(status, rate);
+}
+EXPORT_SYMBOL_GPL(mt76x02_mac_process_rx);
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.h \
b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.h index 8788c54c6c3d..857ab2308e8b \
100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x02_mac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76x02_mac.h
@@ -20,6 +20,8 @@
#include <linux/average.h>
+struct mt76x02_dev;
+
struct mt76x02_tx_status {
u8 valid:1;
u8 success:1;
@@ -195,6 +197,8 @@ bool mt76x02_mac_load_tx_status(struct mt76_dev *dev,
struct mt76x02_tx_status *stat);
void mt76x02_send_tx_status(struct mt76_dev *dev,
struct mt76x02_tx_status *stat, u8 *update);
+int mt76x02_mac_process_rx(struct mt76x02_dev *dev, struct sk_buff *skb,
+ void *rxi);
int
mt76x02_mac_process_rate(struct mt76_rx_status *status, u16 rate);
void mt76x02_mac_setaddr(struct mt76_dev *dev, u8 *addr);
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/common.c \
b/drivers/net/wireless/mediatek/mt76/mt76x2/common.c index eb9861f89e1a..d953c65cac80 \
100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x2/common.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2/common.c
@@ -32,7 +32,7 @@ void mt76x2_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
}
skb_pull(skb, sizeof(struct mt76x02_rxwi));
- if (mt76x2_mac_process_rx(dev, skb, rxwi)) {
+ if (mt76x02_mac_process_rx(dev, skb, rxwi)) {
dev_kfree_skb(skb);
return;
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/mac.c \
b/drivers/net/wireless/mediatek/mt76/mt76x2/mac.c index 7aefe72fc506..9ebb219d63ae \
100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x2/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2/mac.c
@@ -53,99 +53,3 @@ void mt76x2_mac_stop(struct mt76x02_dev *dev, bool force)
mt76_wr(dev, MT_TX_RTS_CFG, rts_cfg);
}
EXPORT_SYMBOL_GPL(mt76x2_mac_stop);
-
-int mt76x2_mac_get_rssi(struct mt76x02_dev *dev, s8 rssi, int chain)
-{
- struct mt76x02_rx_freq_cal *cal = &dev->cal.rx;
-
- rssi += cal->rssi_offset[chain];
- rssi -= cal->lna_gain;
-
- return rssi;
-}
-
-int mt76x2_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 mt76x02_rxwi *rxwi = rxi;
- struct mt76x02_sta *sta;
- u32 rxinfo = le32_to_cpu(rxwi->rxinfo);
- u32 ctl = le32_to_cpu(rxwi->ctl);
- u16 rate = le16_to_cpu(rxwi->rate);
- u16 tid_sn = le16_to_cpu(rxwi->tid_sn);
- bool unicast = rxwi->rxinfo & cpu_to_le32(MT_RXINFO_UNICAST);
- int pad_len = 0;
- u8 pn_len;
- u8 wcid;
- int len;
-
- if (!test_bit(MT76_STATE_RUNNING, &dev->mt76.state))
- return -EINVAL;
-
- if (rxinfo & MT_RXINFO_L2PAD)
- pad_len += 2;
-
- if (rxinfo & MT_RXINFO_DECRYPT) {
- status->flag |= RX_FLAG_DECRYPTED;
- status->flag |= RX_FLAG_MMIC_STRIPPED;
- status->flag |= RX_FLAG_MIC_STRIPPED;
- status->flag |= RX_FLAG_IV_STRIPPED;
- }
-
- wcid = FIELD_GET(MT_RXWI_CTL_WCID, ctl);
- sta = mt76x02_rx_get_sta(&dev->mt76, wcid);
- status->wcid = mt76x02_rx_get_sta_wcid(sta, unicast);
-
- len = FIELD_GET(MT_RXWI_CTL_MPDU_LEN, ctl);
- pn_len = FIELD_GET(MT_RXINFO_PN_LEN, rxinfo);
- if (pn_len) {
- int offset = ieee80211_get_hdrlen_from_skb(skb) + pad_len;
- u8 *data = skb->data + offset;
-
- status->iv[0] = data[7];
- status->iv[1] = data[6];
- status->iv[2] = data[5];
- status->iv[3] = data[4];
- status->iv[4] = data[1];
- status->iv[5] = data[0];
-
- /*
- * Driver CCMP validation can't deal with fragments.
- * Let mac80211 take care of it.
- */
- if (rxinfo & MT_RXINFO_FRAG) {
- status->flag &= ~RX_FLAG_IV_STRIPPED;
- } else {
- pad_len += pn_len << 2;
- len -= pn_len << 2;
- }
- }
-
- mt76x02_remove_hdr_pad(skb, pad_len);
-
- if ((rxinfo & MT_RXINFO_BA) && !(rxinfo & MT_RXINFO_NULL))
- status->aggr = true;
-
- if (WARN_ON_ONCE(len > skb->len))
- return -EINVAL;
-
- pskb_trim(skb, len);
- status->chains = BIT(0) | BIT(1);
- status->chain_signal[0] = mt76x2_mac_get_rssi(dev, rxwi->rssi[0], 0);
- status->chain_signal[1] = mt76x2_mac_get_rssi(dev, rxwi->rssi[1], 1);
- status->signal = max(status->chain_signal[0], status->chain_signal[1]);
- status->freq = dev->mt76.chandef.chan->center_freq;
- status->band = dev->mt76.chandef.chan->band;
-
- status->tid = FIELD_GET(MT_RXWI_TID, tid_sn);
- status->seqno = FIELD_GET(MT_RXWI_SN, tid_sn);
-
- if (sta) {
- ewma_signal_add(&sta->rssi, status->signal);
- sta->inactive_count = 0;
- }
-
- return mt76x02_mac_process_rate(status, rate);
-}
-EXPORT_SYMBOL_GPL(mt76x2_mac_process_rx);
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/mac.h \
b/drivers/net/wireless/mediatek/mt76/mt76x2/mac.h index db36232277cd..f1077f96a8a4 \
100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x2/mac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2/mac.h
@@ -46,9 +46,6 @@ void mt76x2_mac_stop(struct mt76x02_dev *dev, bool force);
void mt76x2_mac_resume(struct mt76x02_dev *dev);
void mt76x2_mac_set_bssid(struct mt76x02_dev *dev, u8 idx, const u8 *addr);
-int mt76x2_mac_process_rx(struct mt76x02_dev *dev, struct sk_buff *skb,
- void *rxi);
-
int mt76x2_mac_set_beacon(struct mt76x02_dev *dev, u8 vif_idx,
struct sk_buff *skb);
void mt76x2_mac_set_beacon_enable(struct mt76x02_dev *dev, u8 vif_idx, bool val);
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2/mt76x2.h \
b/drivers/net/wireless/mediatek/mt76/mt76x2/mt76x2.h index 0905ec8e20de..3859ded80bc8 \
100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x2/mt76x2.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2/mt76x2.h
@@ -69,7 +69,6 @@ void mt76x2_phy_set_antenna(struct mt76x02_dev *dev);
int mt76x2_phy_start(struct mt76x02_dev *dev);
int mt76x2_phy_set_channel(struct mt76x02_dev *dev,
struct cfg80211_chan_def *chandef);
-int mt76x2_mac_get_rssi(struct mt76x02_dev *dev, s8 rssi, int chain);
void mt76x2_phy_calibrate(struct work_struct *work);
void mt76x2_phy_set_txpower(struct mt76x02_dev *dev);
--
2.19.0
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