1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2020 Facebook */ 3 #include "bpf_iter.h" 4 #include "bpf_tracing_net.h" 5 #include <bpf/bpf_helpers.h> 6 #include <bpf/bpf_tracing.h> 7 8 char _license[] SEC("license") = "GPL"; 9 10 struct { 11 __uint(type, BPF_MAP_TYPE_SK_STORAGE); 12 __uint(map_flags, BPF_F_NO_PREALLOC); 13 __type(key, int); 14 __type(value, int); 15 } sk_stg_map SEC(".maps"); 16 17 __u32 val_sum = 0; 18 __u32 ipv6_sk_count = 0; 19 20 SEC("iter/bpf_sk_storage_map") 21 int dump_bpf_sk_storage_map(struct bpf_iter__bpf_sk_storage_map *ctx) 22 { 23 struct sock *sk = ctx->sk; 24 __u32 *val = ctx->value; 25 26 if (sk == (void *)0 || val == (void *)0) 27 return 0; 28 29 if (sk->sk_family == AF_INET6) 30 ipv6_sk_count++; 31 32 val_sum += *val; 33 return 0; 34 } 35