Subject: [PATCH] net: ethernet: mtk_eth_soc: enable rx cksum offload for MTK_NETSYS_V2
From: Lorenzo Bianconi <[email-masked]>
Date: Mon, 6 Jun 2022 21:49:00 +0200

Enable rx checksum offload for mt7986 chipset.

Signed-off-by: Lorenzo Bianconi <[email-masked]>
Link: https://lore.kernel.org/r/[email-masked]
Signed-off-by: Jakub Kicinski <[email-masked]>
---

--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -1473,8 +1473,8 @@ static int mtk_poll_rx(struct napi_struc
 	int done = 0, bytes = 0;
 
 	while (done < budget) {
+		unsigned int pktlen, *rxdcsum;
 		struct net_device *netdev;
-		unsigned int pktlen;
 		dma_addr_t dma_addr;
 		u32 hash, reason;
 		int mac = 0;
@@ -1541,7 +1541,13 @@ static int mtk_poll_rx(struct napi_struc
 		pktlen = RX_DMA_GET_PLEN0(trxd.rxd2);
 		skb->dev = netdev;
 		skb_put(skb, pktlen);
-		if (trxd.rxd4 & eth->soc->txrx.rx_dma_l4_valid)
+
+		if (MTK_HAS_CAPS(eth->soc->caps, MTK_NETSYS_V2))
+			rxdcsum = &trxd.rxd3;
+		else
+			rxdcsum = &trxd.rxd4;
+
+		if (*rxdcsum & eth->soc->txrx.rx_dma_l4_valid)
 			skb->ip_summed = CHECKSUM_UNNECESSARY;
 		else
 			skb_checksum_none_assert(skb);
@@ -3765,6 +3771,7 @@ static const struct mtk_soc_data mt7986_
 		.txd_size = sizeof(struct mtk_tx_dma_v2),
 		.rxd_size = sizeof(struct mtk_rx_dma_v2),
 		.rx_irq_done_mask = MTK_RX_DONE_INT_V2,
+		.rx_dma_l4_valid = RX_DMA_L4_VALID_V2,
 		.dma_max_len = MTK_TX_DMA_BUF_LEN_V2,
 		.dma_len_offset = 8,
 	},