Maps

BPF maps are shared data structures between eBPF programs and user space, or between multiple eBPF programs.

Map Declaration

map map_name {
    type: .array;
    key: u32;
    value: u64;
    max: 8;
}

Map Types

• .hash - Hash table map
• .array - Array map
• .ringbuf - Ring buffer map
• .lru_hash - LRU hash map
• .prog_array - Program array map

Map Operations

heap p0 = results.lookup(k0);