// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2018-2019 Authors of Cilium

#include <bpf/ctx/skb.h>
#include <bpf/api.h>

#include "lib/utils.h"
#include "lib/common.h"
#include "lib/eth.h"

DEFINE_U32(FOO, 0xF0F0F0F0);
DEFINE_U32(BAR, 0xCECECECE);
DEFINE_IPV6(GLOBAL_IPV6, 0x1, 0, 0x1, 0, 0, 0x1, 0, 0x1, 0x1, 0, 0x1, 0, 0, 0x1, 0, 0x1);
DEFINE_MAC(LOCAL_MAC, 0, 0x1, 0, 0, 0, 0x1);

#define CALLS_MAP_ID 1
#undef CALLS_MAP
#define CALLS_MAP test_cilium_calls_4278124286 // 0xFEFEFEFE

struct bpf_elf_map __section_maps CALLS_MAP = {
	.type		= BPF_MAP_TYPE_PROG_ARRAY,
	.id		= CALLS_MAP_ID,
	.size_key	= sizeof(__u32),
	.size_value	= sizeof(__u32),
	.pinning	= PIN_GLOBAL_NS,
	.max_elem	= CALLS_MAP_ID,
};

__section_tail(CALLS_MAP_ID, 0)
int tail_lxc_prog(struct __sk_buff *skb) {
	return TC_ACT_OK;
}

int __main(struct __sk_buff *skb)
{
	union v6addr v6 = {};
	union macaddr mac = fetch_mac(LOCAL_MAC);

	skb->mark = fetch_u32(FOO);
	skb->cb[0] = fetch_u32(BAR);

	BPF_V6(v6, GLOBAL_IPV6);
	skb->cb[1] = v6.p1;
	skb->cb[2] = v6.p2;
	skb->cb[3] = v6.p3;
	skb->cb[4] = v6.p4;

	skb->priority = mac.p1;
	skb->tc_classid = mac.p2;

	tail_call(skb, &CALLS_MAP, CALLS_MAP_ID);
	return TC_ACT_OK;
}

char __license[] __section("license") = "";