XDP (eXpress Data Path)

  1. eBPF Foundation
    1. eBPF Overview
      1. Berkeley Packet Filter Evolution
        1. Classic BPF to eBPF Transition
          1. Extended Capabilities
          2. eBPF Architecture
            1. Instruction Set
              1. Register Model
                1. General Purpose Registers
                  1. Special Purpose Registers
                  2. Stack Model
                    1. Stack Usage
                      1. Size Limitations
                    2. eBPF Verifier
                      1. Safety Guarantees
                        1. Security Enforcement
                          1. Verification Process
                            1. Bounded Loop Checking
                              1. Pointer Validation
                                1. Memory Safety
                                  1. Type Safety
                                2. eBPF Program Types
                                  1. XDP Program Type
                                    1. Other Program Types
                                      1. Traffic Control
                                        1. Socket Filters
                                          1. Tracepoints
                                            1. Kprobes
                                          2. eBPF Maps
                                            1. Map Concept
                                              1. Key-Value Storage
                                                1. Kernel-Userspace Communication
                                                  1. State Persistence
                                                    1. Common Map Types
                                                      1. Hash Maps
                                                        1. Array Maps
                                                          1. Per-CPU Maps
                                                            1. LPM Trie Maps
                                                              1. Device Maps
                                                                1. CPU Maps
                                                                  1. XSK Maps
                                                                2. eBPF Helper Functions
                                                                  1. Helper Function Categories
                                                                    1. Map Operations
                                                                      1. Map Lookup
                                                                        1. Map Update
                                                                          1. Map Delete
                                                                          2. Packet Manipulation Helpers
                                                                            1. Utility Helpers

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                                                                          2. XDP Fundamentals

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                                                                          4. XDP Architecture