C code to check valid IP Address (IPv4) – Live Demo and Example
thelinuxchannel Here is my sample source-code discussed in the video: you can compile the same via:
network programming
Linux Kernel Module to Drop Packets captured via netfilter hooks
Here is my sample Kernel Module to drop packets (i.e sk_buff instance) captured via netfilter hooks. When you want to drop packets in your custom netfilter hooks make sure you…
UDP sample socket code for Systems and Network software developers
Here is my sample UDP socket code written in C. Unlike other versions you get commonly on-line this version is focused towards systems and network software developers and as a…
What is purpose of Kernel Development – Example SMOAD Networks SDWAN Orchestrator Firewall Kernel Engine
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.…
NAS OS – ZFS on Ubuntu Server – OpenZFS Stack – Architecture – License – FUSE – Demo
Refer:OpenZFS Wiki ↗openzfs.org ↗TrueNAS (formerly FreeNAS) ↗
My OpenWRT Embedded Linux Router build – Ralink RT3050F MIPS SoC Processor – VLOG and Workflow
Refer:Ralink RT3050F Data sheet ↗
My OpenWRT Embedded Linux build on a Dragino V2 MS14 MIPS AR9331 Processor – VLOG and Workflow
Refer:Dragino v2 – Atheros AR9330 rev1 – MIPS 24Kc V7.4 – TrueBench Benchmark ↗Dragino v2 – MS14N-S ↗Dragino v2 – MS14N-P ↗Unwired One (formely known as Black Swift) ↗Links/Specs/Datasheet –…
Linux Kernel Programming – API Hierarchy – External APIs, Internal APIs, Wrapper APIs, Helper APIs, Core Helper APIs, Nested Internal Helper APIs
When you start newly working in the Linux Kernel space you will go through various books and other study material. You read about Kernel data-structures, APIs and so on. But…
Linux Kernel Network Programming – struct net_device data-structure – possible_net_t nd_net – Network namespace and Linux Containers
Refer:Wiki:Linux namespaces ↗Linux containers ↗Docker ↗ Images:Linux Containers Architecture ↗Virtualization vs Containers ↗Docker Architecture ↗ Linux Kernel Source:struct net_device nd_net – Network namespace this network device is inside ↗possible_net_t ↗write_pnet(),…
Linux Kernel Network Programming – struct net_device data-structure – netif_running() API and state variable
Refer:Linux Kernel Source:first_net_device() ↗netif_running() ↗ Here is the copy paste of netif_running() API implementation (include/linux/netdevice.h) from the Kernel-source version 6.6 for quick reference: Download this episode my entire kernel module…