diff options
| author |   Stanislav Fomichev <sdf@google.com> | 2020-07-28 17:31:04 -0700 |
|---|---|---|
| committer |   Daniel Borkmann <daniel@iogearbox.net> | 2020-07-31 00:43:49 +0200 |
| commit | 4fb5f94911405b6d2645d4384c2ae1215bfc6a76 (patch) | |
| tree | 559cbecd39ec5ab9b2b8cf333dd6ebb3dafce578 /tools/testing/selftests/bpf/progs/udp_limit.c | |
| parent | bpf: Expose socket storage to BPF_PROG_TYPE_CGROUP_SOCK (diff) | |
| download | linux-dev-4fb5f94911405b6d2645d4384c2ae1215bfc6a76.tar.xz linux-dev-4fb5f94911405b6d2645d4384c2ae1215bfc6a76.zip | |
selftests/bpf: Verify socket storage in cgroup/sock_{create, release}
Augment udp_limit test to set and verify socket storage value.
That should be enough to exercise the changes from the previous
patch.
Signed-off-by: Stanislav Fomichev <sdf@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200729003104.1280813-2-sdf@google.com
Diffstat (limited to 'tools/testing/selftests/bpf/progs/udp_limit.c')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/udp_limit.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/udp_limit.c b/tools/testing/selftests/bpf/progs/udp_limit.c index 8429b22525a7..165e3c2dd9a3 100644 --- a/tools/testing/selftests/bpf/progs/udp_limit.c +++ b/tools/testing/selftests/bpf/progs/udp_limit.c @@ -6,14 +6,28 @@ int invocations = 0, in_use = 0; +struct { + __uint(type, BPF_MAP_TYPE_SK_STORAGE); + __uint(map_flags, BPF_F_NO_PREALLOC); + __type(key, int); + __type(value, int); +} sk_map SEC(".maps"); + SEC("cgroup/sock_create") int sock(struct bpf_sock *ctx) { + int *sk_storage; __u32 key; if (ctx->type != SOCK_DGRAM) return 1; + sk_storage = bpf_sk_storage_get(&sk_map, ctx, 0, + BPF_SK_STORAGE_GET_F_CREATE); + if (!sk_storage) + return 0; + *sk_storage = 0xdeadbeef; + __sync_fetch_and_add(&invocations, 1); if (in_use > 0) { @@ -31,11 +45,16 @@ int sock(struct bpf_sock *ctx) SEC("cgroup/sock_release") int sock_release(struct bpf_sock *ctx) { + int *sk_storage; __u32 key; if (ctx->type != SOCK_DGRAM) return 1; + sk_storage = bpf_sk_storage_get(&sk_map, ctx, 0, 0); + if (!sk_storage || *sk_storage != 0xdeadbeef) + return 0; + __sync_fetch_and_add(&invocations, 1); __sync_fetch_and_add(&in_use, -1); return 1; |