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NEWS 》 Weekly News Digest - Week 8 - February 2018

Asymmetric Processor Cores
Most Intel processors use one of two cores, the main-line core and the Atom core. Desktop processors might use the newer Kaby Lake or Coffee Lake micro-architecture cores, while the Xeon SP lines uses the previous generation Skylake micro-architecture. All of these are part of the main core line. The Atom core is used in Xeon Phi, Atom and some Pentium or Celeron processors. In simple terms, the main-line is a big core and the Atom is a small core... Read More


Using QCT Quanta LB6M 10GbE Switch for Container Networking
Quanta LB6M is everywhere, yet you won’t find it on Quanta’s website. That’s because it’s not sold to end users, it is an early hyper-scale switch based on the Scorpion chipset. It’s the first 10 GBit/s merchant silicon chipset used by Google and probably others in the development of their large-scale networks... Read More

在YouTube上观看 - [235//0] x26d libpcap Library | Sample example libpcap C code | User-space Network Stack Framework - Part 3 ↗

Using SSE Instead Of WebSockets For Unidirectional Data Flow Over HTTP/2
When building a web application, one must consider what kind of delivery mechanism they are going to use... Read More

在YouTube上观看 - [439//0] x215 Raspberry Pi GPIO Pins | Raw Kernel Access via sysfs - Addon | GPIO Linux Kernel Drivers | P1 ↗

Why IPv6 networks create DNS configuration problems
DNS data is among the most basic and crucial information required for network connectivity, but configuring DNS recursive servers in IPv6-only networks can pose challenges... Read More

Hypervisor or containers: Which solution is right for you?
There are a lot of considerations to make when using virtualization technologies. Finding a solution which balances performance and security can be challenging... Read More

在YouTube上观看 - [302//0] x26c libpcap Library | Sample example libpcap C code | User-space Network Stack Framework - Part 2 ↗

Blockchain for 2018 and Beyond: A (growing) list of blockchain use cases
The blockchain process of transacting and storing information on a decentralized, distributed ledger yields many benefits for enterprise application data... Read More

Raw sockets backdoor gives attackers complete control of some Linux servers
A stealthy backdoor undetected by antimalware providers is giving unknown attackers complete control over at least 100 Linux servers that appear to be used in business production environments, warn researchers... Read More


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Featured Video:
在YouTube上观看 - [1039//0] x258 tp-link UE300 Linux Kernel Realtek Driver Codewalk rtl8153a-3 r8152 USB 3.0 to Gigabit - Part2 ↗

libpcap Library | Linux User-space Network Stack Development ↗
Sunday' 06-Aug-2023
libpcap is a very popular user-space networking library, with which you can capture and or generate packets. libpcap is the underlying framework for many popular packet capture tools such as tcpdump, Wireshark and so on. In fact libpcap is a part of tcpdump project. But besides just using it as a packet capture tool, you can use libpcap in various applications, such as user-space based networking stack development, etc. In some cases libpcap is yet another alternative to raw-sockets and tun/tap interfaces.

The Linux Channel :: Sponsors ↗
Monday' 30-May-2022
Here is a list of all The Linux Channel sponsors/donors (individual/companies).

Inline Programming | Assembly | Scripts | php, python, shell, etc | Rust in Linux Kernel ↗
Friday' 12-May-2023
Inline programming is a technique where code statements are included directly in the text of a program, instead of being contained in separate files or modules. Inline programming can be useful for small or simple tasks, as it can eliminate the need for a separate script or function. One common example of inline programming is using JavaScripts, Php, etc in HTML documents to create dynamic content. Similarly in Linux Kernel we can find lot of instances where we can find inline programming such as inline assembly and now Rust within the Kernel source.

Linux Kernel /sysfs Interface ↗
Saturday' 14-May-2022
/sysfs is one of the most popular kernel to user-space interface which you can leverage to add an interface to your Kernel code such as Kernel modules, Kernel Device Drivers, etc. Although personally I prefer /proc interface than other alternatives such as /sysfs, ioctl() and so on for my personal Kernel modules/stack. So here is my detailed multi-episode Youtube video series on /sysfs Interface.

Rockchip ROC-RK3566-PC from Firefly | OpenWRT ↗
Thursday' 19-Oct-2023
Here is my multi-episode video series on evaluation of Rockchip ROC-RK3566-PC from Firefly with stock OpenWRT firmware.

What is purpose of Kernel Development - Example SMOAD Networks SDWAN Orchestrator Firewall Kernel Engine ↗
Monday' 18-Jul-2022
Often aspiring students may have this question, that what is the purpose of Linux Kernel Development. Since Linux Kernel is very mature and it has almost everything one would need. Usually, we need custom kernel development in the case of any new driver development for new upcoming hardware. And this happens on and on. But at times we may also come across few features/modules/components which are already provided by the Linux Kernel which are not adequate or atleast not the way we exactly intended to use. So, this is the real-world example, sometimes no matter what Linux Kernel provides as a part of stock Kernel/OS features, sometimes we have to write our own custom kernel stack or module(s) which can specifically cater our exact needs.

Linux Kernel Driver Device Trees ↗
Tuesday' 17-Jan-2023
The Linux kernel is the backbone of the Linux operating system. A device tree is a hierarchical tree structure that describes the various devices that are present in a system, including their properties and relationships to one another. The device tree is used by the Linux kernel to identify and initialize the different devices on a system, and to provide a consistent interface for interacting with them.

Linux Kernel vs User-space - Library APIs - Linux Kernel Programming ↗
Friday' 27-Oct-2023
One of the important aspects a beginner who is into Linux Kernel space systems software development has to understand is that unlike user-space C/C++ programming, where you can freely include any library APIs via respective #include files (which are dynamically linked during run-time via those /lib .so files), in the case of Kernel space programming, these library APIs are written within the Kernel source itself. These are the fundamental APIs which we commonly use, such as memcpy(), memcmp(), strlen(), strcpy(), strcpy() and so on. So here is my detailed Youtube video episode on the same with live demo, walk-through and examples.

Porting Sample libpcap C code to Raw Sockets | User-space Network Stack Framework ↗
Monday' 04-Sep-2023
Here is my multi-episode video series where I demonstrate how you can port the my libpcap sample code, discussed in the earlier episode to raw-socket. This code should further help you to design and architect your own user-space Network stack on top of this fundamental framework.

Roadmap - How to become Systems Software Developer ↗
Friday' 13-May-2022
When you are at the beginning of your career or a student, and aspire to become a software developer, one of the avenues to choose is to become a hard-core Systems Software Developer. However it is easier said than done, since there are many aspects to it as you explore further. As a part of systems developer, you can get into core kernel space developer, kernel device drivers developer, embedded developer and get into things like board bring-up, porting, etc, or can become a user-space systems programmer, and so on. So here is my detailed multi-episode Youtube video series on Roadmap - How to become Systems Software Developer.

Trending Video:
在YouTube上观看 - [302//0] x26c libpcap Library | Sample example libpcap C code | User-space Network Stack Framework - Part 2 ↗

Tracking code changes in Linux Kernel Source code ↗
Saturday' 13-Mar-2021


Recommended Video:
在YouTube上观看 - [3873//0] x25b Rockchip ROC-RK3566-PC from Firefly | OpenWRT | Part 1 | The Linux Channel ↗