// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2020 Facebook */ #include <vmlinux.h> #include "bpf_tracing_net.h" #include <bpf/bpf_helpers.h> #include <bpf/bpf_tracing.h> char _license[] SEC("license") = "GPL"; struct { __uint(type, BPF_MAP_TYPE_SK_STORAGE); __uint(map_flags, BPF_F_NO_PREALLOC); __type(key, int); __type(value, int); } sk_stg_map SEC(".maps"); __u32 val_sum = 0; __u32 ipv6_sk_count = 0; __u32 to_add_val = 0; SEC("iter/bpf_sk_storage_map") int rw_bpf_sk_storage_map(struct bpf_iter__bpf_sk_storage_map *ctx) { struct sock *sk = ctx->sk; __u32 *val = ctx->value; if (sk == NULL || val == NULL) return 0; if (sk->sk_family == AF_INET6) ipv6_sk_count++; val_sum += *val; *val += to_add_val; return 0; } SEC("iter/bpf_sk_storage_map") int oob_write_bpf_sk_storage_map(struct bpf_iter__bpf_sk_storage_map *ctx) { struct sock *sk = ctx->sk; __u32 *val = ctx->value; if (sk == NULL || val == NULL) return 0; *(val + 1) = 0xdeadbeef; return 0; }