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// SPDX-License-Identifier: GPL-2.0
#include <linux/bpf.h>
#include <time.h>
#include <errno.h>
#include <bpf/bpf_helpers.h>
#include <bpf/bpf_tracing.h>
#include "bpf_misc.h"
char _license[] SEC("license") = "GPL";
struct elem {
struct bpf_timer t;
};
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__uint(max_entries, 1);
__type(key, int);
__type(value, struct elem);
} timer1_map SEC(".maps");
struct {
__uint(type, BPF_MAP_TYPE_ARRAY);
__uint(max_entries, 1);
__type(key, int);
__type(value, struct elem);
} timer2_map SEC(".maps");
int timer1_err;
int timer2_err;
static int timer_cb1(void *map, int *k, struct elem *v)
{
struct bpf_timer *timer;
int key = 0;
timer = bpf_map_lookup_elem(&timer2_map, &key);
if (timer)
timer2_err = bpf_timer_cancel(timer);
return 0;
}
static int timer_cb2(void *map, int *k, struct elem *v)
{
struct bpf_timer *timer;
int key = 0;
timer = bpf_map_lookup_elem(&timer1_map, &key);
if (timer)
timer1_err = bpf_timer_cancel(timer);
return 0;
}
SEC("tc")
int timer1_prog(void *ctx)
{
struct bpf_timer *timer;
int key = 0;
timer = bpf_map_lookup_elem(&timer1_map, &key);
if (timer) {
bpf_timer_init(timer, &timer1_map, CLOCK_BOOTTIME);
bpf_timer_set_callback(timer, timer_cb1);
bpf_timer_start(timer, 1, BPF_F_TIMER_CPU_PIN);
}
return 0;
}
SEC("tc")
int timer2_prog(void *ctx)
{
struct bpf_timer *timer;
int key = 0;
timer = bpf_map_lookup_elem(&timer2_map, &key);
if (timer) {
bpf_timer_init(timer, &timer2_map, CLOCK_BOOTTIME);
bpf_timer_set_callback(timer, timer_cb2);
bpf_timer_start(timer, 1, BPF_F_TIMER_CPU_PIN);
}
return 0;
}
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