mt76: add an intermediate struct for rx status information

Preparation for passing in more internal rx data via skb->cb

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

3 files changed, 43 insertions, 3 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index 3acf0e175d71..258d2623d1bf 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -384,10 +384,37 @@ int mt76_get_survey(struct ieee80211_hw *hw, int idx,
 }
 EXPORT_SYMBOL_GPL(mt76_get_survey);
 
+static void
+mt76_rx_convert(struct sk_buff *skb)
+{
+        struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
+        struct mt76_rx_status mstat;
+
+        mstat = *((struct mt76_rx_status *) skb->cb);
+        memset(status, 0, sizeof(*status));
+
+        status->flag = mstat.flag;
+        status->freq = mstat.freq;
+        status->enc_flags = mstat.enc_flags;
+        status->encoding = mstat.encoding;
+        status->bw = mstat.bw;
+        status->rate_idx = mstat.rate_idx;
+        status->nss = mstat.nss;
+        status->band = mstat.band;
+        status->signal = mstat.signal;
+        status->chains = mstat.chains;
+
+        BUILD_BUG_ON(sizeof(mstat) > sizeof(skb->cb));
+        BUILD_BUG_ON(sizeof(status->chain_signal) != sizeof(mstat.chain_signal));
+        memcpy(status->chain_signal, mstat.chain_signal, sizeof(mstat.chain_signal));
+}
+
 void mt76_rx_complete(struct mt76_dev *dev, enum mt76_rxq_id q)
 {
         struct sk_buff *skb;
 
-        while ((skb = __skb_dequeue(&dev->rx_skb[q])) != NULL)
+        while ((skb = __skb_dequeue(&dev->rx_skb[q])) != NULL) {
+                mt76_rx_convert(skb);
                 ieee80211_rx_napi(dev->hw, NULL, skb, &dev->napi[q]);
+        }
 }
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index f88d9a15210a..be4846ee4828 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -250,6 +250,19 @@ struct mt76_rate_power {
         };
 };
 
+struct mt76_rx_status {
+        u32 flag;
+        u16 freq;
+        u8 enc_flags;
+        u8 encoding:2, bw:3;
+        u8 rate_idx;
+        u8 nss;
+        u8 band;
+        u8 signal;
+        u8 chains;
+        s8 chain_signal[IEEE80211_MAX_CHAINS];
+};
+
 #define mt76_rr(dev, ...)       (dev)->mt76.bus->rr(&((dev)->mt76), __VA_ARGS__)
 #define mt76_wr(dev, ...)       (dev)->mt76.bus->wr(&((dev)->mt76), __VA_ARGS__)
 #define mt76_rmw(dev, ...)      (dev)->mt76.bus->rmw(&((dev)->mt76), __VA_ARGS__)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2_mac.c b/drivers/net/wireless/mediatek/mt76/mt76x2_mac.c
index 98219b971463..2e12fc0d5c9e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76x2_mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt76x2_mac.c
@@ -29,7 +29,7 @@ void mt76x2_mac_set_bssid(struct mt76x2_dev *dev, u8 idx, const u8 *addr)
 }
 
 static int
-mt76x2_mac_process_rate(struct ieee80211_rx_status *status, u16 rate)
+mt76x2_mac_process_rate(struct mt76_rx_status *status, u16 rate)
 {
         u8 idx = FIELD_GET(MT_RXWI_RATE_INDEX, rate);
 
@@ -268,7 +268,7 @@ static void mt76x2_remove_hdr_pad(struct sk_buff *skb)
 int mt76x2_mac_process_rx(struct mt76x2_dev *dev, struct sk_buff *skb,
                           void *rxi)
 {
-        struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(skb);
+        struct mt76_rx_status *status = (struct mt76_rx_status *) skb->cb;
         struct mt76x2_rxwi *rxwi = rxi;
         u32 ctl = le32_to_cpu(rxwi->ctl);
         u16 rate = le16_to_cpu(rxwi->rate);