Commit ba0cc3c1 authored by Alexei Starovoitov's avatar Alexei Starovoitov Committed by David S. Miller
Browse files

samples/bpf: add bpf_map_update_elem() tests 



increase test coverage to check previously missing 'update when full'

Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a6ed3ea6

samples/bpf/test_maps.c

+13 −2
Original line number Diff line number Diff line
@@ -68,7 +68,16 @@ static void test_hashmap_sanity(int i, void *data) 
	assert(bpf_update_elem(map_fd, &key, &value, BPF_NOEXIST) == -1 &&

	       errno == E2BIG);



	/* update existing element, thought the map is full */

	key = 1;

	assert(bpf_update_elem(map_fd, &key, &value, BPF_EXIST) == 0);

	key = 2;

	assert(bpf_update_elem(map_fd, &key, &value, BPF_ANY) == 0);

	key = 1;

	assert(bpf_update_elem(map_fd, &key, &value, BPF_ANY) == 0);



	/* check that key = 0 doesn't exist */

	key = 0;

	assert(bpf_delete_elem(map_fd, &key) == -1 && errno == ENOENT);



	/* iterate over two elements */
@@ -413,12 +422,14 @@ static void do_work(int fn, void *data) 


	for (i = fn; i < MAP_SIZE; i += TASKS) {

		key = value = i;

		if (do_update)

		if (do_update) {

			assert(bpf_update_elem(map_fd, &key, &value, BPF_NOEXIST) == 0);

		else

			assert(bpf_update_elem(map_fd, &key, &value, BPF_EXIST) == 0);

		} else {

			assert(bpf_delete_elem(map_fd, &key) == 0);

		}

	}

}



static void test_map_parallel(void)

{