5188b0ca5c
Syncing latest libbpf commits from kernel repository. Baseline commit: ba02de1aa04e392e15ef503c6dd5166915d9d4de Checkpoint commit: 35c99ffa20edd3c24be352d28a63cd3a23121282 Andrii Nakryiko (1): libbpf: detect supported kernel BTF features and sanitize BTF Björn Töpel (3): libbpf: fix invalid munmap call libbpf: proper XSKMAP cleanup libbpf: remove unnecessary cast-to-void Daniel Borkmann (2): bpf, libbpf: handle old kernels more graceful wrt global data sections bpf, libbpf: fix segfault in bpf_object__init_maps' pr_debug statement Daniel T. Lee (1): libbpf: fix samples/bpf build failure due to undefined UINT32_MAX Magnus Karlsson (1): libbpf: remove compile time warning from libbpf_util.h Martin KaFai Lau (2): bpf: Sync bpf.h to tools bpf: Support BPF_MAP_TYPE_SK_STORAGE in bpf map probing Matt Mullins (1): tools: sync bpf.h McCabe, Robert J (1): libbpf: fix BPF_LOG_BUF_SIZE off-by-one error Quentin Monnet (1): tools: bpf: synchronise BPF UAPI header with tools Vineet Gupta (1): tools/bpf: fix perf build error with uClibc (seen on ARC) include/uapi/linux/bpf.h | 177 +++++++++++++++++++---------- src/bpf.c | 2 + src/bpf.h | 3 +- src/libbpf.c | 236 ++++++++++++++++++++++++++++++++++++--- src/libbpf_internal.h | 27 +++++ src/libbpf_probes.c | 84 +++++++++++++- src/libbpf_util.h | 2 +- src/xsk.c | 184 +++++++++++++++--------------- 8 files changed, 544 insertions(+), 171 deletions(-) create mode 100644 src/libbpf_internal.h -- 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
To integrate libbpf into a project which uses Meson building system define
[wrap-git] file in subprojects folder.
To add libbpf dependency to the parent parent project, e.g. for
libbpf_static_dep:
libbpf_obj = subproject('libbpf', required : true)
libbpf_static_dep = libbpf_proj.get_variable('libbpf_static_dep')
To validate changes to meson.build
$ python3 meson.py build
$ ninja -C build/
To install headers, libs and pkgconfig
$ cd build
$ ninja install