c020432531
Syncing latest libbpf commits from kernel repository.
Baseline bpf-next commit: 66b5f1c439843bcbab01cc7f3854ae2742f3d1e3
Checkpoint bpf-next commit: b707659213d3c70f2c704ec950df6263b4bffe84
Baseline bpf commit: 53db1cced401e4c65d49edf198e00daa9fc837e6
Checkpoint bpf commit: f1fc7249dddc0e52d9e805e2e661caa118649509
Andrii Nakryiko (8):
libbpf: provide more helpful message on uninitialized global var
libbpf: return previous print callback from libbpf_set_print
libbpf: add helpers for working with BTF types
libbpf: convert libbpf code to use new btf helpers
libbpf: add .BTF.ext offset relocation section loading
libbpf: implement BPF CO-RE offset relocation algorithm
libbpf: fix SIGSEGV when BTF loading fails, but .BTF.ext exists
libbpf: sanitize VAR to conservative 1-byte INT
Petar Penkov (1):
bpf: sync bpf.h to tools/
Stanislav Fomichev (2):
tools/bpf: sync bpf_flow_keys flags
bpf/flow_dissector: support ipv6 flow_label and
BPF_FLOW_DISSECTOR_F_STOP_AT_FLOW_LABEL
Toke Høiland-Jørgensen (2):
tools/include/uapi: Add devmap_hash BPF map type
tools/libbpf_probes: Add new devmap_hash type
include/uapi/linux/bpf.h | 44 +-
src/btf.c | 250 +++++-----
src/btf.h | 182 ++++++++
src/btf_dump.c | 138 ++----
src/libbpf.c | 972 ++++++++++++++++++++++++++++++++++++---
src/libbpf.h | 3 +-
src/libbpf_internal.h | 105 +++++
src/libbpf_probes.c | 1 +
8 files changed, 1405 insertions(+), 290 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
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