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2022-09-28selftests/bpf: Convert sockmap_basic test to ASSERT_* macrosWang Yufen1-54/+33
Convert the selftest to use the preferred ASSERT_* macros instead of the deprecated CHECK(). Signed-off-by: Wang Yufen <wangyufen@huawei.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/1664169131-32405-2-git-send-email-wangyufen@huawei.com
2022-02-02selftests/bpf: Migrate from bpf_prog_test_run_xattrDelyan Kratunov1-11/+9
bpf_prog_test_run_xattr is being deprecated in favor of the OPTS-based bpf_prog_test_run_opts. We end up unable to use CHECK_ATTR so replace usages with ASSERT_* calls. Also, prog_run_xattr is now prog_run_opts. Signed-off-by: Delyan Kratunov <delyank@fb.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20220202235423.1097270-3-delyank@fb.com
2022-01-20selftests: bpf: test BPF_PROG_QUERY for progs attached to sockmapDi Zhu1-0/+66
Add test for querying progs attached to sockmap. we use an existing libbpf query interface to query prog cnt before and after progs attaching to sockmap and check whether the queried prog id is right. Signed-off-by: Di Zhu <zhudi2@huawei.com> Acked-by: Yonghong Song <yhs@fb.com> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/r/20220119014005.1209-2-zhudi2@huawei.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2021-11-25selftests/bpf: Migrate selftests to bpf_map_create()Andrii Nakryiko1-2/+2
Conversion is straightforward for most cases. In few cases tests are using mutable map_flags and attribute structs, but bpf_map_create_opts can be used in the similar fashion, so there were no problems. Just lots of repetitive conversions. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20211124193233.3115996-5-andrii@kernel.org
2021-05-25selftests/bpf: Turn on libbpf 1.0 mode and fix all IS_ERR checksAndrii Nakryiko1-4/+4
Turn ony libbpf 1.0 mode. Fix all the explicit IS_ERR checks that now will be broken because libbpf returns NULL on error (and sets errno). Fix ASSERT_OK_PTR and ASSERT_ERR_PTR to work for both old mode and new modes and use them throughout selftests. This is trivial to do by using libbpf_get_error() API that all libbpf users are supposed to use, instead of IS_ERR checks. A bunch of checks also did explicit -1 comparison for various fd-returning APIs. Such checks are replaced with >= 0 or < 0 cases. There were also few misuses of bpf_object__find_map_by_name() in test_maps. Those are fixed in this patch as well. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: John Fastabend <john.fastabend@gmail.com> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/20210525035935.1461796-3-andrii@kernel.org
2021-04-01selftests/bpf: Add a test case for loading BPF_SK_SKB_VERDICTCong Wang1-0/+40
This adds a test case to ensure BPF_SK_SKB_VERDICT and BPF_SK_STREAM_VERDICT will never be attached at the same time. Signed-off-by: Cong Wang <cong.wang@bytedance.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210331023237.41094-17-xiyou.wangcong@gmail.com
2021-01-20bpf: Remove extra lock_sock for TCP_ZEROCOPY_RECEIVEStanislav Fomichev1-0/+1
Add custom implementation of getsockopt hook for TCP_ZEROCOPY_RECEIVE. We skip generic hooks for TCP_ZEROCOPY_RECEIVE and have a custom call in do_tcp_getsockopt using the on-stack data. This removes 3% overhead for locking/unlocking the socket. Without this patch: 3.38% 0.07% tcp_mmap [kernel.kallsyms] [k] __cgroup_bpf_run_filter_getsockopt | --3.30%--__cgroup_bpf_run_filter_getsockopt | --0.81%--__kmalloc With the patch applied: 0.52% 0.12% tcp_mmap [kernel.kallsyms] [k] __cgroup_bpf_run_filter_getsockopt_kern Note, exporting uapi/tcp.h requires removing netinet/tcp.h from test_progs.h because those headers have confliciting definitions. Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20210115163501.805133-2-sdf@google.com
2020-10-02selftests/bpf: Properly initialize linfo in sockmap_basicStanislav Fomichev1-1/+1
When using -Werror=missing-braces, compiler complains about missing braces. Let's use use ={} initialization which should do the job: tools/testing/selftests/bpf/prog_tests/sockmap_basic.c: In function 'test_sockmap_iter': tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:181:8: error: missing braces around initializer [-Werror=missing-braces] union bpf_iter_link_info linfo = {0}; ^ tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:181:8: error: (near initialization for 'linfo.map') [-Werror=missing-braces] tools/testing/selftests/bpf/prog_tests/sockmap_basic.c: At top level: Signed-off-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20201002000451.1794044-1-sdf@google.com
2020-09-28selftest: bpf: Test copying a sockmap and sockhashLorenz Bauer1-6/+8
Since we can now call map_update_elem(sockmap) from bpf_iter context it's possible to copy a sockmap or sockhash in the kernel. Add a selftest which exercises this. Signed-off-by: Lorenz Bauer <lmb@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200928090805.23343-5-lmb@cloudflare.com
2020-09-28selftests: bpf: Remove shared header from sockmap iter testLorenz Bauer1-18/+18
The shared header to define SOCKMAP_MAX_ENTRIES is a bit overkill. Dynamically allocate the sock_fd array based on bpf_map__max_entries instead. Suggested-by: Yonghong Song <yhs@fb.com> Signed-off-by: Lorenz Bauer <lmb@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200928090805.23343-4-lmb@cloudflare.com
2020-09-28selftests: bpf: Add helper to compare socket cookiesLorenz Bauer1-14/+36
We compare socket cookies to ensure that insertion into a sockmap worked. Pull this out into a helper function for use in other tests. Signed-off-by: Lorenz Bauer <lmb@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200928090805.23343-3-lmb@cloudflare.com
2020-09-10selftests: bpf: Test iterating a sockmapLorenz Bauer1-0/+89
Add a test that exercises a basic sockmap / sockhash iteration. For now we simply count the number of elements seen. Once sockmap update from iterators works we can extend this to perform a full copy. Signed-off-by: Lorenz Bauer <lmb@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200909162712.221874-4-lmb@cloudflare.com
2020-08-24selftests: bpf: Fix sockmap update nitsLorenz Bauer1-7/+5
Address review by Yonghong, to bring the new tests in line with the usual code style. Signed-off-by: Lorenz Bauer <lmb@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200824084523.13104-1-lmb@cloudflare.com
2020-08-21selftests: bpf: Test sockmap update from BPFLorenz Bauer1-0/+78
Add a test which copies a socket from a sockmap into another sockmap or sockhash. This excercises bpf_map_update_elem support from BPF context. Compare the socket cookies from source and destination to ensure that the copy succeeded. Also check that the verifier rejects map_update from unsafe contexts. Signed-off-by: Lorenz Bauer <lmb@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20200821102948.21918-7-lmb@cloudflare.com
2020-06-01bpf, selftests: Add sk_msg helpers load and attach testJohn Fastabend1-0/+35
The test itself is not particularly useful but it encodes a common pattern we have. Namely do a sk storage lookup then depending on data here decide if we need to do more work or alternatively allow packet to PASS. Then if we need to do more work consult task_struct for more information about the running task. Finally based on this additional information drop or pass the data. In this case the suspicious check is not so realisitic but it encodes the general pattern and uses the helpers so we test the workflow. This is a load test to ensure verifier correctly handles this case. Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/159033909665.12355.6166415847337547879.stgit@john-Precision-5820-Tower Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2020-02-10bpf: Selftests build error in sockmap_basic.cJohn Fastabend1-0/+5
Fix following build error. We could push a tcp.h header into one of the include paths, but I think its easy enough to simply pull in the three defines we need here. If we end up using more of tcp.h at some point we can pull it in later. /home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c: In function ‘connected_socket_v4’: /home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:20:11: error: ‘TCP_REPAIR_ON’ undeclared (first use in this function) repair = TCP_REPAIR_ON; ^ /home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:20:11: note: each undeclared identifier is reported only once for each function it appears in /home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:29:11: error: ‘TCP_REPAIR_OFF_NO_WP’ undeclared (first use in this function) repair = TCP_REPAIR_OFF_NO_WP; Then with fix, $ ./test_progs -n 44 #44/1 sockmap create_update_free:OK #44/2 sockhash create_update_free:OK #44 sockmap_basic:OK Fixes: 5d3919a953c3c ("selftests/bpf: Test freeing sockmap/sockhash with a socket in it") Signed-off-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com> Link: https://lore.kernel.org/bpf/158131347731.21414.12120493483848386652.stgit@john-Precision-5820-Tower
2020-02-07selftests/bpf: Test freeing sockmap/sockhash with a socket in itJakub Sitnicki1-0/+74
Commit 7e81a3530206 ("bpf: Sockmap, ensure sock lock held during tear down") introduced sleeping issues inside RCU critical sections and while holding a spinlock on sockmap/sockhash tear-down. There has to be at least one socket in the map for the problem to surface. This adds a test that triggers the warnings for broken locking rules. Not a fix per se, but rather tooling to verify the accompanying fixes. Run on a VM with 1 vCPU to reproduce the warnings. Fixes: 7e81a3530206 ("bpf: Sockmap, ensure sock lock held during tear down") Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: John Fastabend <john.fastabend@gmail.com> Link: https://lore.kernel.org/bpf/20200206111652.694507-4-jakub@cloudflare.com
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