1 // SPDX-License-Identifier: GPL-2.0 2 #include <linux/bpf.h> 3 #include <bpf/bpf_helpers.h> 4 #include <bpf/bpf_tracing.h> 5 6 #define MAX_ENTRIES 100000000 7 8 struct trie_key { 9 __u32 prefixlen; 10 __u32 data; 11 }; 12 13 struct { 14 __uint(type, BPF_MAP_TYPE_LPM_TRIE); 15 __type(key, struct trie_key); 16 __type(value, __u32); 17 __uint(map_flags, BPF_F_NO_PREALLOC); 18 __uint(max_entries, MAX_ENTRIES); 19 } trie_free_map SEC(".maps"); 20