mt76: mt7615: add rx checksum offload support

Set skb->ip_summed to CHECKSUM_UNNECESSARY if the hardware has validated
the IP and TCP/UDP checksum

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index a97cc72..fd38737 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -329,6 +329,7 @@ mt7615_init_wiphy(struct ieee80211_hw *hw)
        hw->max_rates = 3;
        hw->max_report_rates = 7;
        hw->max_rate_tries = 11;
+       hw->netdev_features = NETIF_F_RXCSUM;
 
        phy->slottime = 9;
 

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
index 928edd1..340beff 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c
@@ -234,6 +234,7 @@ static int mt7615_mac_fill_rx(struct mt7615_dev *dev, struct sk_buff *skb)
        u32 rxd0 = le32_to_cpu(rxd[0]);
        u32 rxd1 = le32_to_cpu(rxd[1]);
        u32 rxd2 = le32_to_cpu(rxd[2]);
+       u32 csum_mask = MT_RXD0_NORMAL_IP_SUM | MT_RXD0_NORMAL_UDP_TCP_SUM;
        __le32 rxd12 = rxd[12];
        bool unicast, remove_pad, insert_ccmp_hdr = false;
        int phy_idx;
@@ -271,6 +272,9 @@ static int mt7615_mac_fill_rx(struct mt7615_dev *dev, struct sk_buff *skb)
                spin_unlock_bh(&dev->sta_poll_lock);
        }
 
+       if ((rxd0 & csum_mask) == csum_mask)
+               skb->ip_summed = CHECKSUM_UNNECESSARY;
+
        if (rxd2 & MT_RXD2_NORMAL_FCS_ERR)
                status->flag |= RX_FLAG_FAILED_FCS_CRC;