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https://github.com/monah-rasta/r8125

2.5G Ethernet LINUX driver r8125
https://github.com/monah-rasta/r8125

dkms driver ethernet linux network realtek

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2.5G Ethernet LINUX driver r8125

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README 

        



	This is the Linux device driver released for Realtek 2.5 Gigabit Ethernet controllers with PCI-Express interface.



	- Kernel source tree (supported Linux kernel 2.6.x and 2.4.x)

	- For linux kernel 2.4.x, this driver supports 2.4.20 and latter.

	- Compiler/binutils for kernel compilation



	Unpack the tarball :

		# tar vjxf r8125-9.aaa.bb.tar.bz2



	Change to the directory:

		# cd r8125-9.aaa.bb



	If you are running the target kernel, then you should be able to do :



		# ./autorun.sh	(as root or with sudo)



	You can check whether the driver is loaded by using following commands.



		# lsmod | grep r8125

		# ifconfig -a



	If there is a device name, ethX, shown on the monitor, the linux

	driver is loaded. Then, you can use the following command to activate

	the ethX.



		# ifconfig ethX up



		,where X=0,1,2,...



	1. Set manually

		a. Set the IP address of your machine.



			# ifconfig ethX "the IP address of your machine"



		b. Set the IP address of DNS.



		   Insert the following configuration in /etc/resolv.conf.



			nameserver "the IP address of DNS"



		c. Set the IP address of gateway.



			# route add default gw "the IP address of gateway"



	2. Set by doing configurations in /etc/sysconfig/network-scripts

	   /ifcfg-ethX for Redhat and Fedora, or /etc/sysconfig/network

	   /ifcfg-ethX for SuSE. There are two examples to set network

	   configurations.



		a. Fixed IP address:

			DEVICE=eth0

			BOOTPROTO=static

			ONBOOT=yes

			TYPE=ethernet

			NETMASK=255.255.255.0

			IPADDR=192.168.1.1

			GATEWAY=192.168.1.254

			BROADCAST=192.168.1.255



		b. DHCP:

			DEVICE=eth0

			BOOTPROTO=dhcp

			ONBOOT=yes



	There are two ways to modify the MAC address of the NIC.

	1. Use ifconfig:



		# ifconfig ethX hw ether YY:YY:YY:YY:YY:YY



	   ,where X is the device number assigned by Linux kernel, and

		  YY:YY:YY:YY:YY:YY is the MAC address assigned by the user.



	2. Use ip:



		# ip link set ethX address YY:YY:YY:YY:YY:YY



	   ,where X is the device number assigned by Linux kernel, and

		  YY:YY:YY:YY:YY:YY is the MAC address assigned by the user.



	1. Force the link status when insert the driver.



	   If the user is in the path ~/r8125, the link status can be forced

	   to one of the 5 modes as following command.



		# insmod ./src/r8125.ko speed=SPEED_MODE duplex=DUPLEX_MODE autoneg=NWAY_OPTION



		,where

			SPEED_MODE	= 1000	for 1000Mbps

					= 100	for 100Mbps

					= 10	for 10Mbps

			DUPLEX_MODE	= 0	for half-duplex

					= 1	for full-duplex

			NWAY_OPTION	= 0	for auto-negotiation off (true force)

					= 1	for auto-negotiation on (nway force)

		For example:



			# insmod ./src/r8125.ko speed=100 duplex=0 autoneg=1



		will force PHY to operate in 100Mpbs Half-duplex(nway force).



	2. Force the link status by using ethtool.

		a. Insert the driver first.

		b. Make sure that ethtool exists in /sbin.

		c. Force the link status as the following command.



			2.5G before kernel v4.10

			# ethtool -s eth0 autoneg on advertise 0x802f



			2.5G for kernel v4.10 and later

			# ethtool -s eth0 autoneg on advertise 0x80000000002f



			# 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)



	Transmitting Jumbo Frames, whose packet size is bigger than 1500 bytes, please change mtu by the following command.



	# ifconfig ethX mtu MTU



	, where X=0,1,2,..., and MTU is configured by user.



	RTL8125 supports Jumbo Frame size up to 9 kBytes.



    Get/Set device EEE status



		Get EEE device status

		# ethtool --show-eee enp1s0



		Set EEE device status

		# ethtool --set-eee enp1s0 eee on tx-lpi on tx-timer 1546 advertise 0x0008 (100M full)

		# ethtool --set-eee enp1s0 eee on tx-lpi on tx-timer 1546 advertise 0x0020 (1G)

		# ethtool --set-eee enp1s0 eee on tx-lpi on tx-timer 1546 advertise 0x8000 (2.5G)