cd87f1568e
Syncing latest libbpf commits from kernel repository.
Baseline bpf-next commit: abbc61a5f26d52a5d3abbbe552b275360b2c6631
Checkpoint bpf-next commit: 9b79c0be350d3825ef26ed9eebac6ae50df506bc
Baseline bpf commit: 542bf38f11d11bf98c69b2f83f3519ada8a76e95
Checkpoint bpf commit: 90db6d772f749e38171d04619a5e3cd8804a6d02
Andrii Nakryiko (4):
libbpf: Fix handling of optional field_name in
btf_dump__emit_type_decl
bpf: Switch BPF UAPI #define constants used from BPF program side to
enums
libbpf: Assume unsigned values for BTF_KIND_ENUM
libbpf: Split BTF presence checks into libbpf- and kernel-specific
parts
Carlos Neira (1):
bpf: Added new helper bpf_get_ns_current_pid_tgid
Eelco Chaudron (1):
bpf: Add bpf_xdp_output() helper
KP Singh (2):
bpf: Introduce BPF_MODIFY_RETURN
tools/libbpf: Add support for BPF_MODIFY_RETURN
Willem de Bruijn (1):
bpf: Sync uapi bpf.h to tools/
include/uapi/linux/bpf.h | 223 +++++++++++++++++++++++++++------------
src/btf_dump.c | 10 +-
src/libbpf.c | 21 +++-
3 files changed, 176 insertions(+), 78 deletions(-)
--
2.17.1
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