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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /tools/testing/selftests/bpf/progs/bpf_iter_sockmap.c | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/bpf/progs/bpf_iter_sockmap.c')
-rw-r--r-- | tools/testing/selftests/bpf/progs/bpf_iter_sockmap.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_sockmap.c b/tools/testing/selftests/bpf/progs/bpf_iter_sockmap.c new file mode 100644 index 000000000..f3af0e30c --- /dev/null +++ b/tools/testing/selftests/bpf/progs/bpf_iter_sockmap.c @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2020 Cloudflare */ +#include "bpf_iter.h" +#include "bpf_tracing_net.h" +#include <bpf/bpf_helpers.h> +#include <bpf/bpf_tracing.h> +#include <errno.h> + +char _license[] SEC("license") = "GPL"; + +struct { + __uint(type, BPF_MAP_TYPE_SOCKMAP); + __uint(max_entries, 64); + __type(key, __u32); + __type(value, __u64); +} sockmap SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_SOCKHASH); + __uint(max_entries, 64); + __type(key, __u32); + __type(value, __u64); +} sockhash SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_SOCKHASH); + __uint(max_entries, 64); + __type(key, __u32); + __type(value, __u64); +} dst SEC(".maps"); + +__u32 elems = 0; +__u32 socks = 0; + +SEC("iter/sockmap") +int copy(struct bpf_iter__sockmap *ctx) +{ + struct sock *sk = ctx->sk; + __u32 tmp, *key = ctx->key; + int ret; + + if (!key) + return 0; + + elems++; + + /* We need a temporary buffer on the stack, since the verifier doesn't + * let us use the pointer from the context as an argument to the helper. + */ + tmp = *key; + + if (sk) { + socks++; + return bpf_map_update_elem(&dst, &tmp, sk, 0) != 0; + } + + ret = bpf_map_delete_elem(&dst, &tmp); + return ret && ret != -ENOENT; +} |