Add README.md and REALTEK_README.txt

Signed-off-by: Deokgyu Yang <[email protected]>

README.md

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+# Realtek r8152 DKMS
+
+![GitHub release (latest SemVer)](https://img.shields.io/github/v/release/awesometic/realtek-r8152-dkms?sort=semver&style=for-the-badge)
+
+This provides Realtek r8152 driver in DKMS way so that you can keep the latest driver even after the kernel upgrade.
+
+## Compatibility
+
+The RTL8152 driver supports the following USB Ethernet chipsets.
+
+- **RTL8156 / RTL8156B(S)(G)**: 2.5 GbE (USB 3.0)
+- **RTL8153 / RTL8153B**: 10/100/1000 MbE (USB 3.0)
+- **RTL8154 / RTL8154B**: 10/100/1000 MbE (USB 2.0)
+- **RTL8152B**: 10/100M (USB2.0)
+
+## Installation
+
+There are 3 ways to install this DKMS module. Choose one as your tastes.
+
+Those are not interfering with each other. So you can do all 3 methods but absolutely you don't need to.
+
+Installation using the Debian package is recommended for the sake of getting the newer driver.
+
+### Debian package
+
+#### Released package file
+
+Download the latest Debian package from the Release tab on the Github repository.
+
+Then enter the following command.
+
+```bash
+sudo dpkg -i realtek-r8152-dkms*.deb
+```
+
+> If multiple files selected by the wild card, you should type the specific version of the file.
+>
+> ```bash
+> sudo dpkg -i realtek-r8152-dkms_2.15.0-1_amd64.deb
+> ```
+
+If dependency error occurs, try to fix that with `apt` command.
+
+```bash
+sudo apt install --fix-broken
+```
+
+#### Launchpad PPA (Recommended)
+
+Add the Launchpad PPA.
+
+```bash
+sudo add-apt-repository ppa:awesometic/ppa
+```
+
+Then install the package using `apt` tool.
+
+```bash
+sudo apt install realtek-r8152-dkms
+```
+
+### autorun.sh
+
+Using the `autorun.sh` script that Realtek provides on their original driver package. This is **not installed as a DKMS**, only efforts to the current kernel.
+
+Download or clone this repository and move to the extracted directory, then run the script.
+
+```bash
+sudo ./autorun.sh
+```
+
+### dkms-install.sh
+
+This script is from aircrack-ng team. You can install the DKMS module by a simple command.
+
+Download or clone this repository and move to the extracted directory, then run the script.
+
+```bash
+sudo ./dkms-install.sh
+```
+
+## Debian package build
+
+You can build yourself this after installing some dependencies including `dkms`.
+
+```bash
+sudo apt install devscripts debmake debhelper build-essential dkms
+```
+
+```bash
+dpkg-buildpackage -b -rfakeroot -us -uc
+```
+
+## LICENSE
+
+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_README.txt

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+- If you want to support S5 WOL, you have to find
+
+	EXTRA_CFLAGS += -DRTL8152_S5_WOL
+
+  in the Makefile. Then, remove the first character '#", if it exists.
+
+
+- For Fedora, you may have to run the following command after installing the
+  driver.
+
+	# dracut -f
+
+- For Ubuntu, you may have to run the following command after installing the
+  driver.
+
+	# sudo depmod -a
+	# sudo update-initramfs -u
+
+- Example of setting speed
+
+	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)
+
+- Disable center tap short
+
+	# make CONFIG_CTAP_SHORT=OFF modules
+
+- Ring parameter
+
+	Show Ring parameter
+	# ethtool -g eth0
+
+	Changes the number of ring entries for the Rx ring.
+	# ethtool -G eth0 rx 100