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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright 2022 Google LLC.
*/
#include <linux/bpf.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_endian.h>
#include <netinet/in.h>
#include <sys/socket.h>
/* 2001:db8::1 */
#define BINDADDR_V6 { { { 0x20,0x01,0x0d,0xb8,0,0,0,0,0,0,0,0,0,0,0,1 } } }
__u32 do_bind = 0;
__u32 has_error = 0;
__u32 invocations_v4 = 0;
__u32 invocations_v6 = 0;
SEC("cgroup/connect4")
int connect_v4_prog(struct bpf_sock_addr *ctx)
{
struct sockaddr_in sa = {
.sin_family = AF_INET,
.sin_addr.s_addr = bpf_htonl(0x01010101),
};
__sync_fetch_and_add(&invocations_v4, 1);
if (do_bind && bpf_bind(ctx, (struct sockaddr *)&sa, sizeof(sa)))
has_error = 1;
return 1;
}
SEC("cgroup/connect6")
int connect_v6_prog(struct bpf_sock_addr *ctx)
{
struct sockaddr_in6 sa = {
.sin6_family = AF_INET6,
.sin6_addr = BINDADDR_V6,
};
__sync_fetch_and_add(&invocations_v6, 1);
if (do_bind && bpf_bind(ctx, (struct sockaddr *)&sa, sizeof(sa)))
has_error = 1;
return 1;
}
char _license[] SEC("license") = "GPL";
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