From: Joanne Koong <joannelkoong@xxxxxxxxx>
This patch adds a few calls to the existing local storage selftest to
test that we can associate multiple elements with the local storage.
The sleepable program's call to bpf_sk_storage_get with sk_storage_map2
will lead to an allocation of a new selem under the GFP_KERNEL flag.
Signed-off-by: Joanne Koong <joannelkoong@xxxxxxxxx>
---
.../selftests/bpf/progs/local_storage.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/tools/testing/selftests/bpf/progs/local_storage.c b/tools/testing/selftests/bpf/progs/local_storage.c
index 9b1f9b75d5c2..19423ed862e3 100644
--- a/tools/testing/selftests/bpf/progs/local_storage.c
+++ b/tools/testing/selftests/bpf/progs/local_storage.c
@@ -36,6 +36,13 @@ struct {
__type(value, struct local_storage);
} sk_storage_map SEC(".maps");
+struct {
+ __uint(type, BPF_MAP_TYPE_SK_STORAGE);
+ __uint(map_flags, BPF_F_NO_PREALLOC | BPF_F_CLONE);
+ __type(key, int);
+ __type(value, struct local_storage);
+} sk_storage_map2 SEC(".maps");
+
struct {
__uint(type, BPF_MAP_TYPE_TASK_STORAGE);
__uint(map_flags, BPF_F_NO_PREALLOC);
@@ -115,7 +122,19 @@ int BPF_PROG(socket_bind, struct socket *sock, struct sockaddr *address,
if (storage->value != DUMMY_STORAGE_VALUE)
sk_storage_result = -1;
+ /* This tests that we can associate multiple elements
+ * with the local storage.
+ */
+ storage = bpf_sk_storage_get(&sk_storage_map2, sock->sk, 0,
+ BPF_LOCAL_STORAGE_GET_F_CREATE);
+ if (!storage)
+ return 0;
+
err = bpf_sk_storage_delete(&sk_storage_map, sock->sk);
+ if (err)
+ return 0;
+
+ err = bpf_sk_storage_delete(&sk_storage_map2, sock->sk);
if (!err)
sk_storage_result = err;
--
2.30.2
