Update Realtek r8152 driver to 2.18.1

This closes PR #24

README.md

@@ -97,4 +97,4 @@ GPL-2 on Realtek driver and the debian packaing.
 
 ## References
 
-- [Realtek r8152 driver release page](https://www.realtek.com/en/component/zoo/category/network-interface-controllers-10-100-1000m-gigabit-ethernet-usb-3-0-software)
+- [Realtek r8152 driver downloads](https://www.realtek.com/Download/List?cate_id=585)

REALTEK_README.txt

@@ -24,6 +24,9 @@
 	2.5G for kernel v4.10 and later
 	# ethtool -s eth0 autoneg on advertise 0x80000000002f
 
+	5G for kernel v4.10 and later (Couldn't be supported before kernel v4.10)
+	# ethtool -s eth0 autoneg on advertise 0x180000000002f
+
 	# ethtool -s eth0 autoneg on advertise 0x002f (1G)
 	# ethtool -s eth0 autoneg on advertise 0x000f (100M full)
 	# ethtool -s eth0 autoneg on advertise 0x0003 (10M full)

src/Makefile

@@ -8,9 +8,17 @@ ifneq ($(KERNELRELEASE),)
 	obj-m	 := r8152.o
 #	EXTRA_CFLAGS += -DRTL8152_S5_WOL
 #	EXTRA_CFLAGS += -DRTL8152_DEBUG
+
 	ifneq (,$(filter OFF off, $(CONFIG_CTAP_SHORT)))
 		EXTRA_CFLAGS += -DCONFIG_CTAP_SHORT_OFF
 	endif
+
+	ifeq (TRUE, $(shell test $(VERSION) -lt 5 && echo "TRUE" || \
+		test $(VERSION) -eq 5 && test $(PATCHLEVEL) -lt 12 && echo "TRUE"))
+		EXTRA_CFLAGS += -DLINUX_VERSION_MAJOR=$(VERSION)
+		EXTRA_CFLAGS += -DLINUX_VERSION_PATCHLEVEL=$(PATCHLEVEL)
+		EXTRA_CFLAGS += -DLINUX_VERSION_SUBLEVEL=$(SUBLEVEL)
+	endif
 else
 	KERNELDIR ?= /lib/modules/$(shell uname -r)/build
 	PWD :=$(shell pwd)

src/compatibility.h

@@ -33,6 +33,8 @@
 	#define TSO_LEGACY_MAX_SIZE		65536
 	#define netif_napi_add_weight		netif_napi_add
 	#define netif_set_tso_max_size		netif_set_gso_max_size
+	#define netif_set_tso_max_segs		netif_set_gso_max_segs
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,17,0)
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,15,0)
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,12,0)
 	#define PHY_MAC_INTERRUPT		PHY_IGNORE_INTERRUPT
@@ -65,15 +67,19 @@
 	# define fallthrough                    do {} while (0)  /* fallthrough */
 	#endif
 
-	#define MDIO_EEE_2_5GT         0x0001  /* 2.5GT EEE cap */
+	#define MDIO_EEE_2_5GT			0x0001  /* 2.5GT EEE cap */
+	#define MDIO_EEE_5GT			0x0002  /* 5GT EEE cap */
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,2,0)
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,1,0)
-	#define MDIO_AN_10GBT_CTRL_ADV2_5G     0x0080  /* Advertise 2.5GBASE-T */
-	#define MDIO_AN_10GBT_STAT_LP2_5G      0x0020  /* LP is 2.5GBT capable */
+	#define MDIO_AN_10GBT_CTRL_ADV2_5G	0x0080  /* Advertise 2.5GBASE-T */
+	#define MDIO_AN_10GBT_CTRL_ADV5G	0x0100  /* Advertise 5GBASE-T */
+	#define MDIO_AN_10GBT_STAT_LP2_5G	0x0020  /* LP is 2.5GBT capable */
+	#define MDIO_AN_10GBT_STAT_LP5G		0x0040  /* LP is 5GBT capable */
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5,0,0)
 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,20,0)
 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,12,0)
 	#define SPEED_2500				2500
+	#define SPEED_5000				5000
 	#define SPEED_25000				25000
 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,10,0)
 	#ifndef ETHTOOL_LINK_MODE_2500baseT_Full_BIT
@@ -357,7 +363,7 @@
 	static inline void netif_napi_del(struct napi_struct *napi)
 	{
 	#ifdef CONFIG_NETPOLL
-	        list_del(&napi->dev_list);
+		list_del(&napi->dev_list);
 	#endif
 	}
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27) */
@@ -473,21 +479,21 @@
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,36) */
 	static inline __be16 vlan_get_protocol(const struct sk_buff *skb)
 	{
-	       __be16 protocol = 0;
-
-	       if (vlan_tx_tag_present(skb) ||
-	            skb->protocol != cpu_to_be16(ETH_P_8021Q))
-	               protocol = skb->protocol;
-	       else {
-	               __be16 proto, *protop;
-	               protop = skb_header_pointer(skb, offsetof(struct vlan_ethhdr,
-	                                               h_vlan_encapsulated_proto),
-	                                               sizeof(proto), &proto);
-	               if (likely(protop))
-	                       protocol = *protop;
-	       }
+		__be16 protocol = 0;
+
+		if (vlan_tx_tag_present(skb) ||
+		    skb->protocol != cpu_to_be16(ETH_P_8021Q))
+			protocol = skb->protocol;
+		else {
+			__be16 proto, *protop;
+			protop = skb_header_pointer(skb, offsetof(struct vlan_ethhdr,
+						    h_vlan_encapsulated_proto),
+						    sizeof(proto), &proto);
+			if (likely(protop))
+				protocol = *protop;
+		}
 
-	       return protocol;
+		return protocol;
 	}
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,37) */
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) */
@@ -620,11 +626,24 @@
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(5,8,0) */
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(5,9,0) */
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(5,12,0) */
+	#if LINUX_VERSION_CODE < KERNEL_VERSION(5,10,188) || LINUX_VERSION_CODE >= KERNEL_VERSION(5,11,0)
+	#if LINUX_VERSION_CODE < KERNEL_VERSION(5,4,251) || LINUX_VERSION_CODE >= KERNEL_VERSION(5,5,0)
+	#if LINUX_VERSION_MAJOR != 4 || LINUX_VERSION_PATCHLEVEL != 19 || LINUX_VERSION_SUBLEVEL < 291
 	static inline void eth_hw_addr_set(struct net_device *dev, const u8 *addr)
 	{
 		memcpy(dev->dev_addr, addr, 6);
 	}
+	#endif /* LINUX_VERSION_MAJOR != 4 || LINUX_VERSION_PATCHLEVEL != 19 || LINUX_VERSION_SUBLEVEL < 291 */
+	#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(5,4,251) || LINUX_VERSION_CODE >= KERNEL_VERSION(5,5,0) */
+	#endif /*LINUX_VERSION_CODE < KERNEL_VERSION(5,10,188) || LINUX_VERSION_CODE >= KERNEL_VERSION(5,11,0) */
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(5,15,0) */
+	static inline void netif_set_gso_max_segs(struct net_device *dev,
+						  unsigned int segs)
+	{
+		/* dev->gso_max_segs is read locklessly from sk_setup_caps() */
+		WRITE_ONCE(dev->gso_max_segs, segs);
+	}
+#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(5,17,0) */
 #endif /* LINUX_VERSION_CODE < KERNEL_VERSION(5,19,0) */
 
 #ifndef FALSE