Ethernet Driver Archives

USB Ethernet Testing – Measuring network throughput using iperf

Cross Compile Iperf for ARM $ git clone https://github.com/esnet/iperf.git $ cd iperf/ Assuming toolchain is located at /home/devlab/devlab/linaro/gcc-linaro-7.4.1-2019.02-x86_64_arm-linux-gnueabihf $ export PATH=$PATH:/home/devlab/devlab/linaro/gcc-linaro-7.4.1-2019.02-x86_64_arm-linux-gnueabihf/bin $ mkdir out $ ./configure –host=arm-linux-gnueabihf –prefix=/home/devlab/devlab/iperf/out $ make $ make install * copy ./out/bin/iperf to /usr/local/bin of BeagleBoard(ARM platform) RFS. On linux host :~$ iperf -s ———————————————————— Server listening on TCP port 5001 … Read more

How to Turn ON & OFF Bluetooth, LAN, Wireless / WiFi from command line in Ubuntu

Rfkill is a tool for enabling and disabling wireless devices. $ rfkill list 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no 1: brcmwl-0: Wireless LAN Soft blocked: no Hard blocked: no 3: hci0: Bluetooth Soft blocked: no Hard blocked: no As seen above we have a WiFi, LAN and Bluetooth supported and ON … Read more

Sending and receiving data from user space and kernel using Netlink sockets / Communicating between the kernel and user-space in Linux using Netlink sockets

As mentioned in Linux kernel souce code net/netlink/af_netlink.c, netlink is a Kernel-user communication protocol which allows user to send and receive data to Linux kernel using sockets as we do for other socket communication. Netlink is used to transfer information between the kernel and userspace processes. It consists of a standard sockets-based interface for user … Read more