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android / platform / external / libbpf / e5dbc1a96f138e7c47324a65269adff0ca0f4f6e
commite5dbc1a96f138e7c47324a65269adff0ca0f4f6e[log] [tgz]
authorAndrii Nakryiko <andriin@fb.com>Fri Jan 24 13:48:53 2020 -0800
committerAndrii Nakryiko <andrii.nakryiko@gmail.com>Fri Jan 24 14:08:27 2020 -0800
treee87eb86c486319768b1df70b5c402ffba0abce79
parent96333403cadc3658d867c1f1d9ed143f3c91bd2c [diff]
sync: latest libbpf changes from kernel

Syncing latest libbpf commits from kernel repository.
Baseline bpf-next commit:   a6ed02cac690b635dbb938690e795812ce1e14ca
Checkpoint bpf-next commit: 35b9211c0a2427e8f39e534f442f43804fc8d5ca
Baseline bpf commit:        1712b2fff8c682d145c7889d2290696647d82dab
Checkpoint bpf commit:      08dc225d8868d5094ada62f471ebdfcce9dbc298

Alexei Starovoitov (1):
  libbpf: Add support for program extensions

Andrii Nakryiko (2):
  libbpf: Improve handling of failed CO-RE relocations
  libbpf: Fix realloc usage in bpf_core_find_cands

Antoine Tenart (1):
  net: macsec: introduce the macsec_context structure

Martin KaFai Lau (1):
  bpf: Sync uapi bpf.h to tools/

 include/uapi/linux/bpf.h     |  10 +++-
 include/uapi/linux/if_link.h |   7 +++
 src/bpf.c                    |   3 +-
 src/libbpf.c                 | 112 +++++++++++++++++++++--------------
 src/libbpf.h                 |   8 ++-
 src/libbpf.map               |   2 +
 src/libbpf_probes.c          |   1 +
 7 files changed, 97 insertions(+), 46 deletions(-)

--
2.17.1
2 files changed
tree: e87eb86c486319768b1df70b5c402ffba0abce79
  1. include/
  2. scripts/
  3. src/
  4. travis-ci/
  5. .lgtm.yml
  6. .travis.yml
  7. BPF-CHECKPOINT-COMMIT
  8. CHECKPOINT-COMMIT
  9. LICENSE
  10. LICENSE.BSD-2-Clause
  11. LICENSE.LPGL-2.1
  12. README.md
README.md

This is a mirror of bpf-next linux tree's tools/lib/bpf directory plus its supporting header files.

The following files will by sync'ed with bpf-next repo:

  • src/ <-> bpf-next/tools/lib/bpf/
  • include/uapi/linux/bpf_common.h <-> bpf-next/tools/include/uapi/linux/bpf_common.h
  • include/uapi/linux/bpf.h <-> bpf-next/tools/include/uapi/linux/bpf.h
  • include/uapi/linux/btf.h <-> bpf-next/tools/include/uapi/linux/btf.h
  • include/uapi/linux/if_link.h <-> bpf-next/tools/include/uapi/linux/if_link.h
  • include/uapi/linux/if_xdp.h <-> bpf-next/tools/include/uapi/linux/if_xdp.h
  • include/uapi/linux/netlink.h <-> bpf-next/tools/include/uapi/linux/netlink.h
  • include/tools/libc_compat.h <-> bpf-next/tools/include/tools/libc_compat.h

Other header files at this repo (include/linux/*.h) are reduced versions of their counterpart files at bpf-next's tools/include/linux/*.h to make compilation successful.

Build Build Status Total alerts Coverity

libelf is an internal dependency of libbpf and thus it is required to link against and must be installed on the system for applications to work. pkg-config is used by default to find libelf, and the program called can be overridden with PKG_CONFIG. If using pkg-config at build time is not desired, it can be disabled by setting NO_PKG_CONFIG=1 when calling make.

To build both static libbpf.a and shared libbpf.so:

$ cd src
$ make

To build only static libbpf.a library in directory build/ and install them together with libbpf headers in a staging directory root/:

$ cd src
$ mkdir build root
$ BUILD_STATIC_ONLY=y OBJDIR=build DESTDIR=root make install

To build both static libbpf.a and shared libbpf.so against a custom libelf dependency installed in /build/root/ and install them together with libbpf headers in a build directory /build/root/:

$ cd src
$ PKG_CONFIG_PATH=/build/root/lib64/pkgconfig DESTDIR=/build/root make install

Distributions

Distributions packaging libbpf from this mirror:

Benefits of packaging from the mirror over packaging from kernel sources:

  • Consistent versioning across distributions.
  • No ties to any specific kernel, transparent handling of older kernels. Libbpf is designed to be kernel-agnostic and work across multitude of kernel versions. It has built-in mechanisms to gracefully handle older kernels, that are missing some of the features, by working around or gracefully degrading functionality. Thus libbpf is not tied to a specific kernel version and can/should be packaged and versioned independently.
  • Continuous integration testing via TravisCI.
  • Static code analysis via LGTM and Coverity.

Package dependencies of libbpf, package names may vary across distros:

  • zlib
  • libelf

License

This work is dual-licensed under BSD 2-clause license and GNU LGPL v2.1 license. You can choose between one of them if you use this work.

SPDX-License-Identifier: BSD-2-Clause OR LGPL-2.1