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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,…
Detailed scheme of the forwarding operations in 2.6 kernel NAPI – www.researchgate.net/profile/Roberto_Bruschi/publication:Figure 4. Detailed scheme of the forwarding operations in 2.6 kernel NAPI. Image courtesy/source HERE The linux networking architecture…
In the case of user-space programs, we use third-party libraries (explicit or implicit), but that cannot happen when you code in kernel space. The libraries share the same address space…
At times you may come across some old or legacy kernel source-code which could be something you stumbled across online open-source code or it could be your organization proprietary code…
Usually as a part of network software development you do socket programming. But this is typically done in user-space, where the user-space socket APIs takes the instructions (via socket API…
Many viewers and even sometimes my students ask me how I can become a kernel programmer or just device driver developer and so on. So here is my YouTube video…
If you allocate any global variables and when you access them (i.e read or write) at different parts of the code you are supposed to use locks such as Spinlocks,…
When you learn programming usually you learn about various programming constructs. One of them is about calling APIs (functions) recursively. Recursive function calling is quite common in situations such as…
Although the current Linux Kernel source-code contain certain parts of the code written in assembly code (actually native CPU assembly instructions) and recently certain parts of code written in Rust…
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