// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2018 Facebook */ #include <stddef.h> #include <linux/bpf.h> #include <linux/types.h> #include "bpf_helpers.h" struct bpf_map_def SEC("maps") mim_array = { .type = BPF_MAP_TYPE_ARRAY_OF_MAPS, .key_size = sizeof(int), /* must be sizeof(__u32) for map in map */ .value_size = sizeof(__u32), .max_entries = 1, .map_flags = 0, }; struct bpf_map_def SEC("maps") mim_hash = { .type = BPF_MAP_TYPE_HASH_OF_MAPS, .key_size = sizeof(int), /* must be sizeof(__u32) for map in map */ .value_size = sizeof(__u32), .max_entries = 1, .map_flags = 0, }; SEC("xdp_mimtest") int xdp_mimtest0(struct xdp_md *ctx) { int value = 123; int key = 0; void *map; map = bpf_map_lookup_elem(&mim_array, &key); if (!map) return XDP_DROP; bpf_map_update_elem(map, &key, &value, 0); map = bpf_map_lookup_elem(&mim_hash, &key); if (!map) return XDP_DROP; bpf_map_update_elem(map, &key, &value, 0); return XDP_PASS; } int _version SEC("version") = 1; char _license[] SEC("license") = "GPL";