26954e103d
Currently, libbpf only provides a function to get a single ID for the XDP program attached to the interface. However, it can be useful to get the full set of program IDs attached, along with the attachment mode, in one go. Add a new getter function to support this, using an extendible structure to carry the information. Express the old bpf_get_link_id() function in terms of the new function. Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Song Liu <songliubraving@fb.com> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/157333185164.88376.7520653040667637246.stgit@toke.dk |
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include | ||
scripts | ||
src | ||
travis-ci/managers | ||
.lgtm.yml | ||
.travis.yml | ||
BPF-CHECKPOINT-COMMIT | ||
CHECKPOINT-COMMIT | ||
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
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