diff options
| author |   Tony Ambardar <tony.ambardar@gmail.com> | 2024-09-16 01:37:44 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2024-10-03 17:47:36 -0700 |
| commit | bcc60abd67c7741a065480df4875534f62f758b1 (patch) | |
| tree | 752d3fe262f2ecff34cc710a9f8be33609082f3b /tools/lib/bpf/libbpf_internal.h | |
| parent | libbpf: Support BTF.ext loading and output in either endianness (diff) | |
| download | wireguard-linux-bcc60abd67c7741a065480df4875534f62f758b1.tar.xz wireguard-linux-bcc60abd67c7741a065480df4875534f62f758b1.zip | |
libbpf: Support opening bpf objects of either endianness
Allow bpf_object__open() to access files of either endianness, and convert
included BPF programs to native byte-order in-memory for introspection.
Loading BPF objects of non-native byte-order is still disallowed however.
Signed-off-by: Tony Ambardar <tony.ambardar@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/26353c1a1887a54400e1acd6c138fa90c99cdd40.1726475448.git.tony.ambardar@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/lib/bpf/libbpf_internal.h')
| -rw-r--r-- | tools/lib/bpf/libbpf_internal.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/tools/lib/bpf/libbpf_internal.h b/tools/lib/bpf/libbpf_internal.h index 182529360c84..de498e2dd6b0 100644 --- a/tools/lib/bpf/libbpf_internal.h +++ b/tools/lib/bpf/libbpf_internal.h @@ -617,6 +617,16 @@ static inline bool is_ldimm64_insn(struct bpf_insn *insn) return insn->code == (BPF_LD | BPF_IMM | BPF_DW); } +static inline void bpf_insn_bswap(struct bpf_insn *insn) +{ + __u8 tmp_reg = insn->dst_reg; + + insn->dst_reg = insn->src_reg; + insn->src_reg = tmp_reg; + insn->off = bswap_16(insn->off); + insn->imm = bswap_32(insn->imm); +} + /* Unconditionally dup FD, ensuring it doesn't use [0, 2] range. * Original FD is not closed or altered in any other way. * Preserves original FD value, if it's invalid (negative). |