25 lines
558 B
C
25 lines
558 B
C
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// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2024 Google LLC */
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#include "vmlinux.h"
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#include <string.h>
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_endian.h>
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#include <bpf/bpf_core_read.h>
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#include "bpf_kfuncs.h"
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#define REWRITE_ADDRESS_IP4 0xc0a801fe // 192.168.1.254
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#define REWRITE_ADDRESS_PORT4 4040
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SEC("cgroup/getpeername4")
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int getpeername_v4_prog(struct bpf_sock_addr *ctx)
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{
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ctx->user_ip4 = bpf_htonl(REWRITE_ADDRESS_IP4);
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ctx->user_port = bpf_htons(REWRITE_ADDRESS_PORT4);
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return 1;
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}
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char _license[] SEC("license") = "GPL";
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