* feat: add tcx and bpf token tutorials
* docs: auto-generate documentation
* docs: rewrite tcx and bpf_token tutorials with richer content and consistent style
Rewrote all 4 README files (EN/ZH for both tutorials) to match the
existing tutorial style with detailed background, full code listings,
step-by-step explanations, comparison tables, and proper references.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* style: replace em dashes with colons, commas, and parentheses
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* docs: auto-generate documentation
* ci: add tcx and bpf_token builds to CI; simplify execl in token_userns_demo
- Add make targets for src/50-tcx and src/features/bpf_token to the
test-libbpf CI workflow.
- Replace four separate execl() calls with a single execv() using a
dynamically built argv array, reducing complexity and eliminating
CodeFactor command-injection false positives.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* ci: fix mkdocs path in trigger-sync workflow
Use .venv/bin/mkdocs instead of bare mkdocs, since make install
puts it inside a virtualenv.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---------
Co-authored-by: LinuxDev9002 <linuxdev8883@example.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
- Implement BPF program for TC ingress using dynptrs to safely parse packet headers and manage variable-length ringbuf records.
- Create user-space loader for the BPF program, allowing configuration of blocked ports and snapshot lengths for TCP payloads.
- Define necessary data structures and constants in header file for both BPF and user-space contexts.
- Add a comprehensive test script to validate functionality, including basic packet capture and port blocking tests.
This commit introduces a comprehensive Chinese translation of the eBPF tutorial focused on using BPF struct_ops to extend kernel subsystems. The tutorial covers the challenges of kernel development, the benefits of using BPF struct_ops, and provides detailed examples of implementing a kernel module, BPF program, and user-space loader. The content aims to enhance accessibility for Chinese-speaking developers interested in eBPF and kernel programming.
- Introduced a comprehensive tutorial in README.md explaining how to fix broken HID devices using eBPF without kernel patches.
- Implemented a userspace program (hid-input-modifier.c) that creates a virtual HID mouse using the uhid interface and sends synthetic mouse events.
- Developed a BPF program (hid-input-modifier.bpf.c) that intercepts HID events and modifies mouse movement data, effectively doubling the X and Y movement.
- Created necessary header files (hid_bpf.h, hid_bpf_defs.h, hid_bpf_helpers.h) to define structures and helper functions for the BPF program.
- Added functionality to find and manage the virtual HID device, ensuring seamless integration with the BPF program.
- Created SUMMARY.md.template and SUMMARY.zh.md.template for eBPF tutorial.
- Updated generate_toc.py to generate table of contents for English and Chinese versions.
- Added configuration files for new eBPF examples, categorizing them by level and type.
- Updated SUMMARY.md and SUMMARY.zh.md to reflect new lessons and reorganized sections.
- Introduced new features related to GPU and tracing in the tutorial.
- Removed unnecessary print statements for arena sum and number of elements in the test_arena_list_add_del function.
- Simplified output to focus on essential test results, improving clarity and conciseness of the test logs.
- Introduced BPF workqueues to enable asynchronous work from BPF programs, allowing deferred processing, non-blocking operations, and sleepable contexts for long-running tasks.
- Added README.md to document the BPF workqueues, including use cases, technical architecture, and code examples.
- Created bpf_experimental.h header file to define necessary BPF workqueue functions and structures.
- Implemented a simple BPF workqueue example (wq_simple) demonstrating the initialization, scheduling, and execution of work in a separate context.
- Developed a userspace test (wq_simple.c) to verify the functionality of the BPF workqueue by triggering a syscall and checking the execution results.
This commit introduces a new BPF program that manages an arena list, allowing for the addition and deletion of elements. The following changes were made:
- Added `arena_list.bpf.c` to implement BPF functions for adding and deleting elements in an arena list.
- Created `arena_list.c` for user-space testing of the BPF program, including functions to sum elements and validate the arena list operations.
- Introduced `bpf_arena_alloc.h` and `bpf_arena_common.h` for memory allocation and common definitions related to arena management.
- Defined `bpf_arena_list.h` to establish the structure of the arena list nodes and heads.
- Added `bpf_experimental.h` to include experimental BPF features and helper functions for object management.
These changes enhance the BPF capabilities for managing memory in a structured way, facilitating efficient allocation and deallocation of resources.
