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A typical IPv4 header is fixed in length. However there is a provision to add extra dynamically sized IP Options header used for Network testing and debugging. Although it is…
Network_data_flow_through_kernel - here is a detailed IPv4 Network API and data-structure API Map originally published in Linux Foundation Wiki
dst_entry() is one of the important Linux Kernel Networking subsystem data-structure which is used while navigating the packet flow within the IPv4 stack. It contains function pointers one for input…
As I discussed in various episodes and articles in the past there are various ways via which you can communicate from Kernel space to User space and vice-versa. Some of…
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,…
Whenever you do Linux Kernel programming, you must've noticed file operations are defined with respect to certain data-structures. Its quite common you may find these in Linux Device Drivers and…
You can optionally have a dedicated Network Console port for your Raspberry Pi PiPG device. So that you can remotely access the PiPG web UI and configure the same, while…
Download the PiPG - PiPG-v1.0.26-02-Nov-2020 - complete MicroSD Image
I was doing a general code walk of Tun/Tap drivers in /drivers/net/tun.c and /drivers/net/tap.c, which is when I stumbled across its ioctl handlers/implementation and then started comparing with generic /net/core/dev_ioctl.c.…
IPUtils is a popular Linux Open-Source package which includes various utilities for Linux networking such as ping, arping, ping6 and so on.
The setsockopt() function provides an application program (user-space) with the means to control socket behavior. You can use setsockopt() to allocate buffer space, control timeouts, permit socket data broadcasts and…
Linux Networking Stack Receive Flow Steering (RFS) aim is to increase data-cache hitrate by steering kernel processing of packets to the CPU where the application thread consuming the packet is…
Here is a code-walk of a git-hub source submitted by a viewer Sekhar Pariga, which is a Multi-client TCP Server with pthreads Mutex synchronized. Basically it is a Directory Listing…
Here is my sample source-code discussed in the video: you can compile the same via:
If you are a newbie or even an experienced programmer you might have stumbled at kernel newbies page which is heaven for all those who are willing to involve in…
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