Libbpf is used by xtasks, in the command, ensure that the submodules
are initialized. This eases the user-experience so that users don't
need to think about the submodule, while retaining all the benefits
of using a submodule vs forcing the user to manually check out libbpf
and stick it in some pre-defined place.
We use the symbol pointing to libbpf in xtask in the build script
to avoid repeating this constant.
Also, we install git in the vm so that we can init the submodule
when we build in the vm.
- Add libbpf as a submodule. This prevents having to plumb its location
around (which can't be passed to Cargo build scripts) and also
controls the version against which codegen has run.
- Move bpf written in C to the integration-test crate and define
constants for each probe.
- Remove magic; each C source file must be directly enumerated in the
build script and in lib.rs.
This patch adds `user_regs_struct`.
riscv provides struct user_regs_struct instead of struct pt_regs to userspace.
After bindings generates the code, adding the riscv support in `bpf/aya-bpf/src/args.rs`
then aya-bpf can be built for riscv.
Aya::obj depends on bindgen generated files, and we start
by migrating bindgen generated files.
This commit adds the new aya-obj crate to the workplace
and migrates generated files into the crate. We use core
instead of std in an effort to make the final crate no_std.
Bindgen was run against libbpf v1.0.1.
Refs: #473
This patch replaces `bpf_map_.*` with `bpf_.*`.
Currently some types that are not used in helper functions are not generated for bindings - e.g. `bpf_sk_lookup`, `bpf_sockopt` and etc.
This patch replaces `bpf_map_.*` with `bpf_.*`.
Note, this PR does not include bindings files as it would be better to be created by auto script.
The missing bindings can be created by `cargo xtask codegen --libbpf-dir /<PATH_TO>/libbp`.
This adds `bpf_btf_info` which can be used to get BPF information via a
syscall. It also adds `btf_line_info` and `btf_func_info` which are
required to parse the line and func info sections of BTF
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
libbpf periodically syncs uapi headers from the kernel. Use those to
generate bindings so that we don't have to rely on distro packages
when we cut releases.