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authorMartin KaFai Lau <kafai@fb.com>2017-03-22 10:00:35 -0700
committerDavid S. Miller <davem@davemloft.net>2017-03-22 15:45:45 -0700
commitfb30d4b71214aa1811e997f8f753b14b46d5b912 (patch)
treea546eefbd355792aa544c0f220b38bab4493b1aa /samples/bpf/bpf_load.c
parentbcc6b1b7ebf857a9fe56202e2be3361131588c15 (diff)
downloadlinux-fb30d4b71214aa1811e997f8f753b14b46d5b912.tar.bz2
bpf: Add tests for map-in-map
Test cases for array of maps and hash of maps. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples/bpf/bpf_load.c')
-rw-r--r--samples/bpf/bpf_load.c22
1 files changed, 17 insertions, 5 deletions
diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c
index b86ee54da2d1..dcdce1270d38 100644
--- a/samples/bpf/bpf_load.c
+++ b/samples/bpf/bpf_load.c
@@ -43,6 +43,7 @@ struct bpf_map_def {
unsigned int value_size;
unsigned int max_entries;
unsigned int map_flags;
+ unsigned int inner_map_idx;
};
static int populate_prog_array(const char *event, int prog_fd)
@@ -198,11 +199,22 @@ static int load_maps(struct bpf_map_def *maps, int len)
for (i = 0; i < len / sizeof(struct bpf_map_def); i++) {
- map_fd[i] = bpf_create_map(maps[i].type,
- maps[i].key_size,
- maps[i].value_size,
- maps[i].max_entries,
- maps[i].map_flags);
+ if (maps[i].type == BPF_MAP_TYPE_ARRAY_OF_MAPS ||
+ maps[i].type == BPF_MAP_TYPE_HASH_OF_MAPS) {
+ int inner_map_fd = map_fd[maps[i].inner_map_idx];
+
+ map_fd[i] = bpf_create_map_in_map(maps[i].type,
+ maps[i].key_size,
+ inner_map_fd,
+ maps[i].max_entries,
+ maps[i].map_flags);
+ } else {
+ map_fd[i] = bpf_create_map(maps[i].type,
+ maps[i].key_size,
+ maps[i].value_size,
+ maps[i].max_entries,
+ maps[i].map_flags);
+ }
if (map_fd[i] < 0) {
printf("failed to create a map: %d %s\n",
errno, strerror(errno));