http://viveksb.dev/tags/bpf/Recent content in Bpf on viveksb007Hugo -- 0.147.8en-usSat, 02 May 2026 00:00:00 +0000http://viveksb.dev/2026/05/bpf-load-c-to-kernel/Sat, 02 May 2026 00:00:00 +0000http://viveksb.dev/2026/05/bpf-load-c-to-kernel/<p>In this post, we are going to learn how BPF code written in C is loaded into the Linux kernel. We will deep dive into everything that happens in the process of turning C source code into a running kernel program.</p> <p>Before diving into the details, there are some prerequisites. I will briefly touch on each concept so we are all on the same page.</p> <h2 id="what-is-an-elf">What is an ELF?</h2> <blockquote> <p><strong>Note:</strong> This section introduces ELF concepts in the abstract. If terms like &ldquo;relocation entries&rdquo; or &ldquo;symbol table&rdquo; feel fuzzy on first read, don&rsquo;t worry — they will click once we inspect a real compiled ELF in the <a href="#inspecting-the-elf-with-readelf">Inspecting the ELF with readelf</a> section. Come back here as a reference when you need it.</p>