kernel/tools/testing/selftests/bpf/progs/map_ptr_kern.c, branch linux-6.2.y

selftests/bpf: Fix warning comparing pointer to 0

2022-03-30T12:17:25Z

Avoid pointer type value compared with 0 to make code clear. Reported by coccicheck: tools/testing/selftests/bpf/progs/map_ptr_kern.c:370:21-22: WARNING comparing pointer to 0 tools/testing/selftests/bpf/progs/map_ptr_kern.c:397:21-22: WARNING comparing pointer to 0 Signed-off-by: Haowen Bai Signed-off-by: Daniel Borkmann Acked-by: Yonghong Song Link: https://lore.kernel.org/bpf/1648605588-19269-1-git-send-email-baihaowen@meizu.com

selftests/bpf: Improve inner_map test coverage.

2021-12-02T19:18:36Z

Check that hash and array inner maps are properly initialized. Signed-off-by: Alexei Starovoitov Signed-off-by: Andrii Nakryiko Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20211201181040.23337-14-alexei.starovoitov@gmail.com

selftests/bpf: Remove SEC("version") from test progs

2021-10-08T05:01:56Z

Since commit 6c4fc209fcf9d ("bpf: remove useless version check for prog load") these "version" sections, which result in bpf_attr.kern_version being set, have been unnecessary. Remove them so that it's obvious to folks using selftests as a guide that "modern" BPF progs don't need this section. Signed-off-by: Dave Marchevsky Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20211007231234.2223081-1-davemarchevsky@fb.com

selftests/bpf: Pass page size from userspace in map_ptr

2021-04-09T06:54:47Z

Use ASSERT to check result but keep CHECK where format was used to report error. Use bpf_map__set_max_entries() to set map size dynamically from userspace according to page size. Zero-initialize the variable in bpf prog, otherwise it will cause problems on some versions of Clang. Signed-off-by: Yauheni Kaliuta Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210408061310.95877-4-yauheni.kaliuta@redhat.com

bpf: Eliminate rlimit-based memory accounting infra for bpf maps

2020-12-03T02:32:47Z

Remove rlimit-based accounting infrastructure code, which is not used anymore. To provide a backward compatibility, use an approximation of the bpf map memory footprint as a "memlock" value, available to a user via map info. The approximation is based on the maximal number of elements and key and value sizes. Signed-off-by: Roman Gushchin Signed-off-by: Alexei Starovoitov Acked-by: Song Liu Link: https://lore.kernel.org/bpf/20201201215900.3569844-33-guro@fb.com

selftests/bpf: Add test for map_ptr arithmetic

2020-09-09T01:04:07Z

Change selftest map_ptr_kern.c with disabling inlining for one of subtests, which will fail the test without previous verifier change. Also added to verifier test for both "map_ptr += scalar" and "scalar += map_ptr" arithmetic. Signed-off-by: Yonghong Song Signed-off-by: Alexei Starovoitov Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20200908175703.2463721-1-yhs@fb.com

bpf: Renames in preparation for bpf_local_storage

2020-08-25T21:59:58Z

A purely mechanical change to split the renaming from the actual generalization. Flags/consts: SK_STORAGE_CREATE_FLAG_MASK BPF_LOCAL_STORAGE_CREATE_FLAG_MASK BPF_SK_STORAGE_CACHE_SIZE BPF_LOCAL_STORAGE_CACHE_SIZE MAX_VALUE_SIZE BPF_LOCAL_STORAGE_MAX_VALUE_SIZE Structs: bucket bpf_local_storage_map_bucket bpf_sk_storage_map bpf_local_storage_map bpf_sk_storage_data bpf_local_storage_data bpf_sk_storage_elem bpf_local_storage_elem bpf_sk_storage bpf_local_storage The "sk" member in bpf_local_storage is also updated to "owner" in preparation for changing the type to void * in a subsequent patch. Functions: selem_linked_to_sk selem_linked_to_storage selem_alloc bpf_selem_alloc __selem_unlink_sk bpf_selem_unlink_storage_nolock __selem_link_sk bpf_selem_link_storage_nolock selem_unlink_sk __bpf_selem_unlink_storage sk_storage_update bpf_local_storage_update __sk_storage_lookup bpf_local_storage_lookup bpf_sk_storage_map_free bpf_local_storage_map_free bpf_sk_storage_map_alloc bpf_local_storage_map_alloc bpf_sk_storage_map_alloc_check bpf_local_storage_map_alloc_check bpf_sk_storage_map_check_btf bpf_local_storage_map_check_btf Signed-off-by: KP Singh Signed-off-by: Alexei Starovoitov Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/bpf/20200825182919.1118197-2-kpsingh@chromium.org

selftests/bpf: Test access to bpf map pointer

2020-06-22T20:22:59Z

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 Signed-off-by: Daniel Borkmann Acked-by: John Fastabend Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/bpf/139a6a17f8016491e39347849b951525335c6eb4.1592600985.git.rdna@fb.com