How to submit your Linux Kernel Patch – Tutorial
thelinuxchannel 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…
systems software developer
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…
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.…
My OpenWRT Embedded Linux Router build – Ralink RT3050F MIPS SoC Processor – VLOG and Workflow
Refer:Ralink RT3050F Data sheet ↗
My OpenWRT Embedded Linux x86 Router Hardware Build – VLOG and Workflow
Here is a mini PC originally I bought to build my TOFFEE Wan Optimization hardware device with Intel Celeron C1037U fanless hardware. Later I tested and played around with OpenWRT.…
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…
Linux Kernel Network Programming – struct net_device data-structure – Traverse net_device Linked-list – Sample Demo
Refer:Linux Kernel Source:first_net_device() ↗next_net_device() ↗ Download this episode my entire kernel module sample code, make file, clean script HERE.And here is the same source code for a quick reference. Its…
Linux Kernel Network Programming – struct net_device data-structure – dev_get_by_index() API
Refer:Linux Kernel:dev_get_by_index() prototype ↗dev_get_by_index() implementation ↗ Here is the copy paste of dev_get_by_index() API implementation (net/core/dev.c) from the Kernel-source version 6.6 for quick reference: Download this episode my entire kernel…