1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2020 Facebook */ 3 #include "bpf_iter.h" 4 #include <bpf/bpf_helpers.h> 5 #include <bpf/bpf_tracing.h> 6 7 char _license[] SEC("license") = "GPL"; 8 9 struct key_t { 10 int a; 11 int b; 12 int c; 13 }; 14 15 struct { 16 __uint(type, BPF_MAP_TYPE_ARRAY); 17 __uint(max_entries, 3); 18 __type(key, __u32); 19 __type(value, __u64); 20 } arraymap1 SEC(".maps"); 21 22 __u32 key_sum = 0; 23 __u64 val_sum = 0; 24 25 SEC("iter/bpf_map_elem") 26 int dump_bpf_array_map(struct bpf_iter__bpf_map_elem *ctx) 27 { 28 __u32 *key = ctx->key; 29 __u64 *val = ctx->value; 30 31 if (key == (void *)0 || val == (void *)0) 32 return 0; 33 34 bpf_seq_write(ctx->meta->seq, key, sizeof(__u32)); 35 bpf_seq_write(ctx->meta->seq, val, sizeof(__u64)); 36 key_sum += *key; 37 val_sum += *val; 38 *val = *key; 39 return 0; 40 } 41