ramips: ralink-eth: add support for 5.4 kernel

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>

target/linux/ramips/files/drivers/net/ethernet/ralink/mdio.c

@@ -88,8 +88,13 @@ int fe_connect_phy_node(struct fe_priv *priv, struct device_node *phy_node, int
 		return -ENODEV;
 	}
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
 	phydev->supported &= PHY_GBIT_FEATURES;
 	phydev->advertising = phydev->supported;
+#else
+	phy_set_max_speed(phydev, SPEED_1000);
+	linkmode_copy(phydev->advertising, phydev->supported);
+#endif
 	phydev->no_auto_carrier_off = 1;
 
 	dev_info(priv->dev,
@@ -110,9 +115,18 @@ static void phy_init(struct fe_priv *priv, struct phy_device *phy)
 	phy->autoneg = AUTONEG_ENABLE;
 	phy->speed = 0;
 	phy->duplex = 0;
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
 	phy->supported &= IS_ENABLED(CONFIG_NET_RALINK_MDIO_MT7620) ?
 			PHY_GBIT_FEATURES : PHY_BASIC_FEATURES;
 	phy->advertising = phy->supported | ADVERTISED_Autoneg;
+#else
+	phy_set_max_speed(phy, IS_ENABLED(CONFIG_NET_RALINK_MDIO_MT7620) ?
+				       SPEED_1000 :
+				       SPEED_100);
+	linkmode_copy(phy->advertising, phy->supported);
+	linkmode_set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phy->advertising);
+#endif
 
 	phy_start_aneg(phy);
 }

target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c

@@ -715,11 +715,19 @@ next_frag:
 	/* TX SG offload */
 	nr_frags = skb_shinfo(skb)->nr_frags;
 	for (i = 0; i < nr_frags; i++) {
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
 		struct skb_frag_struct *frag;
+#else
+		skb_frag_t *frag;
+#endif
 
 		frag = &skb_shinfo(skb)->frags[i];
 		if (fe_tx_dma_map_page(ring, &st, skb_frag_page(frag),
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
 				       frag->page_offset, skb_frag_size(frag)))
+#else
+				       skb_frag_off(frag), skb_frag_size(frag)))
+#endif
 			goto err_dma;
 	}
 
@@ -754,7 +762,11 @@ next_frag:
 			netif_wake_queue(dev);
 	}
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 2, 0)
 	if (netif_xmit_stopped(netdev_get_tx_queue(dev, 0)) || !head->xmit_more)
+#else
+	if (netif_xmit_stopped(netdev_get_tx_queue(dev, 0)) || !netdev_xmit_more())
+#endif
 		fe_reg_w32(ring->tx_next_idx, FE_REG_TX_CTX_IDX0);
 
 	return 0;
@@ -813,14 +825,22 @@ static inline int fe_cal_txd_req(struct sk_buff *skb)
 {
 	struct sk_buff *head = skb;
 	int i, nfrags = 0;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
 	struct skb_frag_struct *frag;
+#else
+	skb_frag_t *frag;
+#endif
 
 next_frag:
 	nfrags++;
 	if (skb_is_gso(skb)) {
 		for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
 			frag = &skb_shinfo(skb)->frags[i];
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 4, 0)
 			nfrags += DIV_ROUND_UP(frag->size, TX_DMA_BUF_LEN);
+#else
+			nfrags += DIV_ROUND_UP(skb_frag_size(frag), TX_DMA_BUF_LEN);
+#endif
 		}
 	} else {
 		nfrags += skb_shinfo(skb)->nr_frags;