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authorAlexei Starovoitov <ast@fb.com>2016-08-05 14:01:28 -0700
committerDavid S. Miller <davem@davemloft.net>2016-08-06 20:49:19 -0400
commitba0cc3c153590e3d31985b8f8914d205a20b0d7a (patch)
tree0bfd00cfd733ae17b33a4203edd57478458e64e6 /samples
parenta6ed3ea65d9868fdf9eff84e6fe4f666b8d14b02 (diff)
downloadlinux-stericsson-ba0cc3c153590e3d31985b8f8914d205a20b0d7a.tar.gz
samples/bpf: add bpf_map_update_elem() tests
increase test coverage to check previously missing 'update when full' Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples')
-rw-r--r--samples/bpf/test_maps.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/samples/bpf/test_maps.c b/samples/bpf/test_maps.c
index 47bf0858f9e4..cce2b59751eb 100644
--- a/samples/bpf/test_maps.c
+++ b/samples/bpf/test_maps.c
@@ -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 */
@@ -413,10 +422,12 @@ 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);
+ }
}
}