bd9e2feb2a
Syncing latest libbpf commits from kernel repository. Baseline bpf-next commit: 2fcd80144b93ff90836a44f2054b4d82133d3a85 Checkpoint bpf-next commit: c321022244708aec4675de4f032ef1ba9ff0c640 Baseline bpf commit: edadedf1c5b4e4404192a0a4c3c0c05e3b7672ab Checkpoint bpf commit: 7f645462ca01d01abb94d75e6768c8b3ed3a188b Andrii Nakryiko (8): bpf: Add support for BPF_OBJ_GET_INFO_BY_FD for bpf_link libbpf: Add low-level APIs for new bpf_link commands libbpf: Refactor BTF-defined map definition parsing logic libbpf: Refactor map creation logic and fix cleanup leak libbpf: Add BTF-defined map-in-map support libbpf: Fix memory leak and possible double-free in hashmap__clear libbpf: Fix huge memory leak in libbpf_find_vmlinux_btf_id() libbpf: Fix false uninitialized variable warning David Ahern (1): libbpf: Only check mode flags in get_xdp_id Jakub Wilk (1): bpf: Fix reStructuredText markup Maciej Żenczykowski (1): bpf: add bpf_ktime_get_boot_ns() Mao Wenan (1): libbpf: Return err if bpf_object__load failed Yoshiki Komachi (1): bpf_helpers.h: Add note for building with vmlinux.h or linux/types.h Zou Wei (1): libbpf: Remove unneeded semicolon in btf_dump_emit_type include/uapi/linux/bpf.h | 46 ++- src/bpf.c | 19 +- src/bpf.h | 4 +- src/bpf_helpers.h | 7 + src/btf_dump.c | 2 +- src/hashmap.c | 7 + src/libbpf.c | 705 +++++++++++++++++++++++++++------------ src/libbpf.map | 6 + src/netlink.c | 2 + 9 files changed, 572 insertions(+), 226 deletions(-) -- 2.24.1
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.hinclude/uapi/linux/bpf.h<->bpf-next/tools/include/uapi/linux/bpf.hinclude/uapi/linux/btf.h<->bpf-next/tools/include/uapi/linux/btf.hinclude/uapi/linux/if_link.h<->bpf-next/tools/include/uapi/linux/if_link.hinclude/uapi/linux/if_xdp.h<->bpf-next/tools/include/uapi/linux/if_xdp.hinclude/uapi/linux/netlink.h<->bpf-next/tools/include/uapi/linux/netlink.hinclude/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
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