From 06f168e65a9b3f73ea079176ed6142b683a458f4 Mon Sep 17 00:00:00 2001 From: Joanne Koong Date: Thu, 17 Mar 2022 21:55:53 -0700 Subject: [PATCH] selftests/bpf: Test for associating multiple elements with the local storage 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 --- .../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 9b1f9b75d5c2f..19423ed862e35 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;