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author | 2020-06-19 14:11:45 -0700 | |
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committer | 2020-06-22 22:22:59 +0200 | |
commit | b1b53d413f16c6b5078edb127e660e67332e4d2f (patch) | |
tree | 063a66799b0a01640a1b0b36ce3107011b4be423 /tools/testing/selftests/bpf/prog_tests/map_ptr.c | |
parent | bpf: Set map_btf_{name, id} for all map types (diff) | |
download | linux-b1b53d413f16c6b5078edb127e660e67332e4d2f.tar.gz linux-b1b53d413f16c6b5078edb127e660e67332e4d2f.tar.bz2 linux-b1b53d413f16c6b5078edb127e660e67332e4d2f.zip |
selftests/bpf: Test access to bpf map pointer
Add selftests to test access to map pointers from bpf program for all
map types except struct_ops (that one would need additional work).
verifier test focuses mostly on scenarios that must be rejected.
prog_tests test focuses on accessing multiple fields both scalar and a
nested struct from bpf program and verifies that those fields have
expected values.
Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Link: https://lore.kernel.org/bpf/139a6a17f8016491e39347849b951525335c6eb4.1592600985.git.rdna@fb.com
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/map_ptr.c')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/map_ptr.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/map_ptr.c b/tools/testing/selftests/bpf/prog_tests/map_ptr.c new file mode 100644 index 000000000000..c230a573c373 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/map_ptr.c @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2020 Facebook + +#include <test_progs.h> +#include <network_helpers.h> + +#include "map_ptr_kern.skel.h" + +void test_map_ptr(void) +{ + struct map_ptr_kern *skel; + __u32 duration = 0, retval; + char buf[128]; + int err; + + skel = map_ptr_kern__open_and_load(); + if (CHECK(!skel, "skel_open_load", "open_load failed\n")) + return; + + err = bpf_prog_test_run(bpf_program__fd(skel->progs.cg_skb), 1, &pkt_v4, + sizeof(pkt_v4), buf, NULL, &retval, NULL); + + if (CHECK(err, "test_run", "err=%d errno=%d\n", err, errno)) + goto cleanup; + + if (CHECK(!retval, "retval", "retval=%d map_type=%u line=%u\n", retval, + skel->bss->g_map_type, skel->bss->g_line)) + goto cleanup; + +cleanup: + map_ptr_kern__destroy(skel); +} |