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author | Alexei Starovoitov <ast@kernel.org> | 2020-01-20 16:53:48 -0800 |
---|---|---|
committer | Daniel Borkmann <daniel@iogearbox.net> | 2020-01-22 23:04:53 +0100 |
commit | 7805fe843964f81f98592bf580b9cd736ac4ad4c (patch) | |
tree | 99bc088a4cd4e27b6c5befcbae2ade0ea72a7f1d /tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c | |
parent | 2db6eab18b9778d55f48c804f8efebd7097e7958 (diff) | |
download | linux-7805fe843964f81f98592bf580b9cd736ac4ad4c.tar.bz2 |
selftests/bpf: Add tests for program extensions
Add program extension tests that build on top of fexit_bpf2bpf tests.
Replace three global functions in previously loaded test_pkt_access.c program
with three new implementations:
int get_skb_len(struct __sk_buff *skb);
int get_constant(long val);
int get_skb_ifindex(int val, struct __sk_buff *skb, int var);
New function return the same results as original only if arguments match.
new_get_skb_ifindex() demonstrates that 'skb' argument doesn't have to be first
and only argument of BPF program. All normal skb based accesses are available.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/bpf/20200121005348.2769920-4-ast@kernel.org
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c index 7d3740d38965..db5c74d2ce6d 100644 --- a/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c +++ b/tools/testing/selftests/bpf/prog_tests/fexit_bpf2bpf.c @@ -26,7 +26,7 @@ static void test_fexit_bpf2bpf_common(const char *obj_file, link = calloc(sizeof(struct bpf_link *), prog_cnt); prog = calloc(sizeof(struct bpf_program *), prog_cnt); - result = malloc(prog_cnt * sizeof(u64)); + result = malloc((prog_cnt + 32 /* spare */) * sizeof(u64)); if (CHECK(!link || !prog || !result, "alloc_memory", "failed to alloc memory")) goto close_prog; @@ -106,8 +106,26 @@ static void test_target_yes_callees(void) prog_name); } +static void test_func_replace(void) +{ + const char *prog_name[] = { + "fexit/test_pkt_access", + "fexit/test_pkt_access_subprog1", + "fexit/test_pkt_access_subprog2", + "fexit/test_pkt_access_subprog3", + "freplace/get_skb_len", + "freplace/get_skb_ifindex", + "freplace/get_constant", + }; + test_fexit_bpf2bpf_common("./fexit_bpf2bpf.o", + "./test_pkt_access.o", + ARRAY_SIZE(prog_name), + prog_name); +} + void test_fexit_bpf2bpf(void) { test_target_no_callees(); test_target_yes_callees(); + test_func_replace(); } |