1 // SPDX-License-Identifier: GPL-2.0
80 	/* *key == 0 - the callback was called for array timer.  in timer_cb1()
81 	 * *key == 4 - the callback was called from lru timer.  in timer_cb1()
98 		int lru_key, i;  in timer_cb1()  local
100 		for (i = LRU + 1;  in timer_cb1()
101 		     i <= 100  /* for current LRU eviction algorithm this number  in timer_cb1()
102 				* should be larger than ~ lru->max_entries * 2  in timer_cb1()
104 		     i++) {  in timer_cb1()
110 			lru_key = i;  in timer_cb1()
112 			/* add more elements into lru map to push out current  in timer_cb1()
127 		if (bpf_timer_cancel(timer) != -EINVAL)  in timer_cb1()
157 	 * doesn't leak timer memory.  in BPF_PROG2()
167 /* callback for prealloc and non-prealloca hashtab timers */
171 		callback_check--;  in timer_cb2()
173 		callback2_check--;  in timer_cb2()
174 	if (val->counter > 0 && --val->counter) {  in timer_cb2()
175 		/* re-arm the timer again to execute after 1 usec */  in timer_cb2()
176 		bpf_timer_start(&val->timer, 1000, 0);  in timer_cb2()
194 		if (bpf_timer_cancel(&val->timer) != -EDEADLK)  in timer_cb2()
205 		 * It's not a use-after-free. The memory is owned by the map.  in timer_cb2()
207 		if (bpf_timer_start(&val->timer, 1000, 0) != -EINVAL)  in timer_cb2()
215 		if (bpf_timer_cancel(&val->timer) != -EDEADLK)  in timer_cb2()
235 		if (bpf_timer_init(&val->timer, &hmap, CLOCK_BOOTTIME) != 0)  in bpf_timer_test()
237 		bpf_timer_set_callback(&val->timer, timer_cb2);  in bpf_timer_test()
238 		bpf_timer_start(&val->timer, 1000, 0);  in bpf_timer_test()
242 		if (bpf_timer_init(&val->timer, &hmap_malloc, CLOCK_BOOTTIME) != 0)  in bpf_timer_test()
244 		bpf_timer_set_callback(&val->timer, timer_cb2);  in bpf_timer_test()
245 		bpf_timer_start(&val->timer, 1000, 0);  in bpf_timer_test()
260 		bpf_timer_init(&val->timer, &hmap, CLOCK_BOOTTIME);  in BPF_PROG2()
267 		bpf_timer_init(&val->timer, &hmap_malloc, CLOCK_BOOTTIME);  in BPF_PROG2()
272 	 * don't leak timer memory.  in BPF_PROG2()
278 		bpf_timer_init(&val->timer, &hmap, CLOCK_BOOTTIME);  in BPF_PROG2()
283 		bpf_timer_init(&val->timer, &hmap, CLOCK_BOOTTIME);  in BPF_PROG2()
285 	/* and with non-prealloc htab */  in BPF_PROG2()
290 		bpf_timer_init(&val->timer, &hmap_malloc, CLOCK_BOOTTIME);  in BPF_PROG2()
295 		bpf_timer_init(&val->timer, &hmap_malloc, CLOCK_BOOTTIME);  in BPF_PROG2()
309 		/* Re-arm timer ~35 seconds in future */  in timer_cb3()
417 	if (err && err != -EBUSY)  in race()