| // SPDX-License-Identifier: GPL-2.0 |
| /* Copyright (c) 2020 Facebook */ |
| #include "bpf_iter.h" |
| #include <bpf/bpf_helpers.h> |
| #include <bpf/bpf_tracing.h> |
| |
| char _license[] SEC("license") = "GPL"; |
| |
| struct key_t { |
| int a; |
| int b; |
| int c; |
| }; |
| |
| struct { |
| __uint(type, BPF_MAP_TYPE_PERCPU_ARRAY); |
| __uint(max_entries, 3); |
| __type(key, __u32); |
| __type(value, __u32); |
| } arraymap1 SEC(".maps"); |
| |
| /* will set before prog run */ |
| volatile const __u32 num_cpus = 0; |
| |
| __u32 key_sum = 0, val_sum = 0; |
| |
| SEC("iter/bpf_map_elem") |
| int dump_bpf_percpu_array_map(struct bpf_iter__bpf_map_elem *ctx) |
| { |
| __u32 *key = ctx->key; |
| void *pptr = ctx->value; |
| __u32 step; |
| int i; |
| |
| if (key == (void *)0 || pptr == (void *)0) |
| return 0; |
| |
| key_sum += *key; |
| |
| step = 8; |
| for (i = 0; i < num_cpus; i++) { |
| val_sum += *(__u32 *)pptr; |
| pptr += step; |
| } |
| return 0; |
| } |