1 // SPDX-License-Identifier: GPL-2.0
79 	/* *key == 0 - the callback was called for array timer.  in timer_cb1()
80 	 * *key == 4 - the callback was called from lru timer.  in timer_cb1()
97 		int lru_key, i;  in timer_cb1()  local
99 		for (i = LRU + 1;  in timer_cb1()
100 		     i <= 100  /* for current LRU eviction algorithm this number  in timer_cb1()
101 				* should be larger than ~ lru->max_entries * 2  in timer_cb1()
103 		     i++) {  in timer_cb1()
109 			lru_key = i;  in timer_cb1()
111 			/* add more elements into lru map to push out current  in timer_cb1()
126 		if (bpf_timer_cancel(timer) != -EINVAL)  in timer_cb1()
156 	 * doesn't leak timer memory.  in BPF_PROG2()
166 /* callback for prealloc and non-prealloca hashtab timers */
170 		callback_check--;  in timer_cb2()
172 		callback2_check--;  in timer_cb2()
173 	if (val->counter > 0 && --val->counter) {  in timer_cb2()
174 		/* re-arm the timer again to execute after 1 usec */  in timer_cb2()
175 		bpf_timer_start(&val->timer, 1000, 0);  in timer_cb2()
193 		if (bpf_timer_cancel(&val->timer) != -EDEADLK)  in timer_cb2()
204 		 * It's not a use-after-free. The memory is owned by the map.  in timer_cb2()
206 		if (bpf_timer_start(&val->timer, 1000, 0) != -EINVAL)  in timer_cb2()
214 		if (bpf_timer_cancel(&val->timer) != -EDEADLK)  in timer_cb2()
234 		if (bpf_timer_init(&val->timer, &hmap, CLOCK_BOOTTIME) != 0)  in bpf_timer_test()
236 		bpf_timer_set_callback(&val->timer, timer_cb2);  in bpf_timer_test()
237 		bpf_timer_start(&val->timer, 1000, 0);  in bpf_timer_test()
241 		if (bpf_timer_init(&val->timer, &hmap_malloc, CLOCK_BOOTTIME) != 0)  in bpf_timer_test()
243 		bpf_timer_set_callback(&val->timer, timer_cb2);  in bpf_timer_test()
244 		bpf_timer_start(&val->timer, 1000, 0);  in bpf_timer_test()
259 		bpf_timer_init(&val->timer, &hmap, CLOCK_BOOTTIME);  in BPF_PROG2()
266 		bpf_timer_init(&val->timer, &hmap_malloc, CLOCK_BOOTTIME);  in BPF_PROG2()
271 	 * don't leak timer memory.  in BPF_PROG2()
277 		bpf_timer_init(&val->timer, &hmap, CLOCK_BOOTTIME);  in BPF_PROG2()
282 		bpf_timer_init(&val->timer, &hmap, CLOCK_BOOTTIME);  in BPF_PROG2()
284 	/* and with non-prealloc htab */  in BPF_PROG2()
289 		bpf_timer_init(&val->timer, &hmap_malloc, CLOCK_BOOTTIME);  in BPF_PROG2()
294 		bpf_timer_init(&val->timer, &hmap_malloc, CLOCK_BOOTTIME);  in BPF_PROG2()
308 		/* Re-arm timer ~35 seconds in future */  in timer_cb3()
416 	if (err && err != -EBUSY)  in race()