README.md aktualisiert

README.md

@@ -1,19 +1,25 @@
 # l3-forwarding-xdp
 
-L3-L4 xdp based forwarding
+L3-L4 XDP-based forwarding tool.
 
-xdp-tools is your friend to load xdp in that case.
+This project implements Layer 3 (IP) and Layer 4 (TCP/UDP) packet forwarding using eBPF and XDP (eXpress Data Path). It leverages the high-performance capabilities of XDP for efficient packet processing in the Linux kernel with bird or FRR.
 
-# INSTALL
+**Note:** `xdp-tools` is highly recommended for loading and managing the XDP program.
-```
+
+## Installation
+
+Install the necessary dependencies using `apt`:
+
+```bash
 apt update
-```
-```
 apt install clang llvm libbpf-dev libelf-dev pkg-config make git bpftool xdp-tools
 ```
 
-# Compile
+## Compilation
-```
+
+Compile the eBPF program from the source code:
+
+```bash
 clang -O2 -g -Wall -target bpf \
   -D__BPF_TRACING__ \
   -I/usr/include \
@@ -21,17 +27,39 @@ clang -O2 -g -Wall -target bpf \
   -c main.c -o main.o
 ```
 
-# Attach to the interface
+This will generate the object file `main.o` which contains the compiled eBPF code.
-```
+
+## Usage
+
+### Attach to the Interface
+
+Load the XDP program onto a network interface (e.g., `eth0`):
+
+```bash
 xdp-loader load eth0 ./main.o
 ```
-```
+
+Check the status of loaded XDP programs:
+
+```bash
 xdp-loader status
 ```
 
-``` BASH
+### Monitoring and Debugging
+
+Use `bpftool` to inspect maps and statistics:
+
+```bash
 bpftool map show
 bpftool map dump name xdp_flow_stats
+```
 
-bpftool map dump name xdp_flow_stats
+These commands will display information about the eBPF maps used in the program, such as flow statistics.
+
+## Unloading the Program
+
+To unload the XDP program from the interface:
+
+```bash
+xdp-loader unload eth0
 ```