#include "../../include/bpf_api.h"

/* Cyclic dependency example to test the kernel's runtime upper

 * bound on loops. Also demonstrates on how to use direct-actions,

 * loaded as: tc filter add [...] bpf da obj [...]

 */

#define JMP_MAP_ID	0xabccba

struct bpf_elf_map __section_maps jmp_tc = {

	.type		= BPF_MAP_TYPE_PROG_ARRAY,

	.id		= JMP_MAP_ID,

	.size_key	= sizeof(uint32_t),

	.size_value	= sizeof(uint32_t),

	.pinning	= PIN_OBJECT_NS,

	.max_elem	= 1,

};

__section_tail(JMP_MAP_ID, 0)

int cls_loop(struct __sk_buff *skb)

{

	printt("cb: %u\n", skb->cb[0]++);

	tail_call(skb, &jmp_tc, 0);

	skb->tc_classid = TC_H_MAKE(1, 42);

	return TC_ACT_OK;

}

__section_cls_entry

int cls_entry(struct __sk_buff *skb)

{

	tail_call(skb, &jmp_tc, 0);

	return TC_ACT_SHOT;

}

BPF_LICENSE("GPL");