kernel/linux.git/tools/lib/bpf/libbpf.map, branch v7.0-rc7

libbpf: Add BTF permutation support for type reordering

2026-01-14T00:10:39+00:00

Introduce btf__permute() API to allow in-place rearrangement of BTF types. This function reorganizes BTF type order according to a provided array of type IDs, updating all type references to maintain consistency. Signed-off-by: Donglin Peng Signed-off-by: Andrii Nakryiko Acked-by: Eduard Zingerman Link: https://lore.kernel.org/bpf/20260109130003.3313716-2-dolinux.peng@gmail.com

libbpf: Add support for associating BPF program with struct_ops

2025-12-06T00:17:57+00:00

Add low-level wrapper and libbpf API for BPF_PROG_ASSOC_STRUCT_OPS command in the bpf() syscall. Signed-off-by: Amery Hung Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20251203233748.668365-4-ameryhung@gmail.com

libbpf: Support exclusive map creation

2025-09-19T02:11:42+00:00

Implement setters and getters that allow map to be registered as exclusive to the specified program. The registration should be done before the exclusive program is loaded. Signed-off-by: KP Singh Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20250914215141.15144-5-kpsingh@kernel.org Signed-off-by: Alexei Starovoitov

libbpf: start v1.7 dev cycle

2025-07-17T01:37:27+00:00

With libbpf 1.6.0 released, adjust libbpf.map and libbpf_version.h to start v1.7 development cycles. Signed-off-by: Andrii Nakryiko Acked-by: Yonghong Song Link: https://lore.kernel.org/r/20250716175936.2343013-1-andrii@kernel.org Signed-off-by: Alexei Starovoitov

libbpf: Introduce bpf_prog_stream_read() API

2025-07-04T02:30:07+00:00

Introduce a libbpf API so that users can read data from a given BPF stream for a BPF prog fd. For now, only the low-level syscall wrapper is provided, we can add a bpf_program__* accessor as a follow up if needed. Acked-by: Andrii Nakryiko Acked-by: Eduard Zingerman Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20250703204818.925464-11-memxor@gmail.com Signed-off-by: Alexei Starovoitov

libbpf: Support link-based cgroup attach with options

2025-06-09T23:28:30+00:00

Currently libbpf supports bpf_program__attach_cgroup() with signature: LIBBPF_API struct bpf_link * bpf_program__attach_cgroup(const struct bpf_program *prog, int cgroup_fd); To support mprog style attachment, additionsl fields like flags, relative_{fd,id} and expected_revision are needed. Add a new API: LIBBPF_API struct bpf_link * bpf_program__attach_cgroup_opts(const struct bpf_program *prog, int cgroup_fd, const struct bpf_cgroup_opts *opts); where bpf_cgroup_opts contains all above needed fields. Signed-off-by: Yonghong Song Signed-off-by: Andrii Nakryiko Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20250606163146.2429212-1-yonghong.song@linux.dev

libbpf: Add getters for BTF.ext func and line info

2025-04-09T23:16:56+00:00

Introducing new libbpf API getters for BTF.ext func and line info, namely: bpf_program__func_info bpf_program__func_info_cnt bpf_program__line_info bpf_program__line_info_cnt This change enables scenarios, when user needs to load bpf_program directly using `bpf_prog_load`, instead of higher-level `bpf_object__load`. Line and func info are required for checking BTF info in verifier; verification may fail without these fields if, for example, program calls `bpf_obj_new`. Signed-off-by: Mykyta Yatsenko Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20250408234417.452565-2-mykyta.yatsenko5@gmail.com

libbpf: Split bpf object load into prepare/load

2025-03-15T18:48:28+00:00

Introduce bpf_object__prepare API: additional intermediate preparation step that performs ELF processing, relocations, prepares final state of BPF program instructions (accessible with bpf_program__insns()), creates and (potentially) pins maps, and stops short of loading BPF programs. We anticipate few use cases for this API, such as: * Use prepare to initialize bpf_token, without loading freplace programs, unlocking possibility to lookup BTF of other programs. * Execute prepare to obtain finalized BPF program instructions without loading programs, enabling tools like veristat to process one program at a time, without incurring cost of ELF parsing and processing. Signed-off-by: Mykyta Yatsenko Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20250303135752.158343-4-mykyta.yatsenko5@gmail.com Signed-off-by: Alexei Starovoitov

libbpf: Introduce kflag for type_tags and decl_tags in BTF

2025-02-06T00:17:59+00:00

Add the following functions to libbpf API: * btf__add_type_attr() * btf__add_decl_attr() These functions allow to add to BTF the type tags and decl tags with info->kflag set to 1. The kflag indicates that the tag directly encodes an __attribute__ and not a normal tag. See Documentation/bpf/btf.rst changes in the subsequent patch for details on the semantics. Suggested-by: Andrii Nakryiko Signed-off-by: Ihor Solodrai Signed-off-by: Andrii Nakryiko Reviewed-by: Alan Maguire Acked-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20250130201239.1429648-2-ihor.solodrai@linux.dev

libbpf: Extend linker API to support in-memory ELF files

2024-12-12T23:16:53+00:00

The new_fd and add_fd functions correspond to the original new and add_file functions, but accept an FD instead of a file name. This gives API consumers the option of using anonymous files/memfds to avoid writing ELFs to disk. This new API will be useful for performing linking as part of bpftrace's JIT compilation. The add_buf function is a convenience wrapper that does the work of creating a memfd for the caller. Signed-off-by: Alastair Robertson Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20241211164030.573042-3-ajor@meta.com