62dab84c81a487d946a5fc37c6df541dd95cca38 - linux

commit	62dab84c81a487d946a5fc37c6df541dd95cca38	[log] [tgz]
author	Martin KaFai Lau <kafai@fb.com>	Fri May 04 14:49:52 2018 -0700
committer	Daniel Borkmann <daniel@iogearbox.net>	Wed May 09 17:25:13 2018 +0200
tree	bcfa804c58e189bf89226ed0c7afa1e23dfeb24c
parent	78958fca7ead2f81b60a6827881c4866d1ed0c52 [diff]

bpf: btf: Add struct bpf_btf_info

During BPF_OBJ_GET_INFO_BY_FD on a btf_fd, the current bpf_attr's
info.info is directly filled with the BTF binary data.  It is
not extensible.  In this case, we want to add BTF ID.

This patch adds "struct bpf_btf_info" which has the BTF ID as
one of its member.  The BTF binary data itself is exposed through
the "btf" and "btf_size" members.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

include/uapi/linux/bpf.h[diff]
kernel/bpf/btf.c[diff]
kernel/bpf/syscall.c[diff]

3 files changed

tree: bcfa804c58e189bf89226ed0c7afa1e23dfeb24c