// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2024 Google LLC */ #include "vmlinux.h" #include <string.h> #include <bpf/bpf_helpers.h> #include <bpf/bpf_endian.h> #include <bpf/bpf_core_read.h> #include "bpf_kfuncs.h" #define REWRITE_ADDRESS_IP6_0 0xfaceb00c #define REWRITE_ADDRESS_IP6_1 0x12345678 #define REWRITE_ADDRESS_IP6_2 0x00000000 #define REWRITE_ADDRESS_IP6_3 0x0000abcd #define REWRITE_ADDRESS_PORT6 6060 SEC("cgroup/getsockname6") int getsockname_v6_prog(struct bpf_sock_addr *ctx) { ctx->user_ip6[0] = bpf_htonl(REWRITE_ADDRESS_IP6_0); ctx->user_ip6[1] = bpf_htonl(REWRITE_ADDRESS_IP6_1); ctx->user_ip6[2] = bpf_htonl(REWRITE_ADDRESS_IP6_2); ctx->user_ip6[3] = bpf_htonl(REWRITE_ADDRESS_IP6_3); ctx->user_port = bpf_htons(REWRITE_ADDRESS_PORT6); return 1; } char _license[] SEC("license") = "GPL";