diff options
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; |