Contains user-space functionality for doing
AF_XDP socket interactions. Much is copy-paste
from xdpilone, but with higher-level abstractions
put on top.
It should be usable at a high level without requiring
unsafe code on the library user's side. The more
low-level control is still available, for power users
who need that level of control (and accept the safety
implications).
Fixes: #507
BPF iterators[0] are a way to dump kernel data into user-space and an
alternative to `/proc` filesystem.
This change adds support for BPF iterators on the user-space side. It
provides a possibility to retrieve the outputs of BPF iterator programs
both from sync and async Rust code.
[0] https://docs.kernel.org/bpf/bpf_iterators.html
This removes the fake std module in aya-obj which is no longer needed as
thiserror now properly supports no_std.
Signed-off-by: Tamir Duberstein <tamird@gmail.com>
The loader should fill bss maps with zeros according to the size of the
ELF section.
Failure to do so yields weird verifier messages as follows:
```
cannot access ptr member ops with moff 0 in struct bpf_map with off 0 size 4
```
Reference to this in the cilium/ebpf code is here [1].
I could not find a reference in libbpf.
1: d0c8fc1937/elf_reader.go (L1159-L1165)
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
Users have reported issues with programs failing the verifier when they
are attempting to read or write to variables that the compiler places in
the .bss section. Add a test that places variables in each section and
exercises read and write operations on them.
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
I did this for arm64 because we'd get a black screen without it but I
have now confirmed that console=ttyAMA0 solves that problem.
I don't remember why I did it for x86.
Update libbpf to 80b16457cb23db4d633b17ba0305f29daa2eb307
Files changed:
M aya-obj/src/generated/btf_internal_bindings.rs
M aya-obj/src/generated/linux_bindings_aarch64.rs
M aya-obj/src/generated/linux_bindings_armv7.rs
M aya-obj/src/generated/linux_bindings_powerpc64.rs
M aya-obj/src/generated/linux_bindings_riscv64.rs
M aya-obj/src/generated/linux_bindings_s390x.rs
M aya-obj/src/generated/linux_bindings_x86_64.rs
Adds the following to codegen:
- `bpf_cgroup_iter_order`: used in `bpf_link_info.iter.group.order`
- `NFPROTO_*`: used in `bpf_link_info.netfilter.pf`
- `nf_inet_hooks`: used in `bpf_link_info.netfilter.hooknum`
Include `linux/netfilter.h` in `linux_wrapper.h` for `NFPROTO_*` and
`nf_inet_hooks` to generate.
This commit adds the initial support for TCX
bpf links. This is a new, multi-program, attachment
type allows for the caller to specify where
they would like to be attached relative to other
programs at the attachment point using the LinkOrder
type.
Signed-off-by: astoycos <astoycos@redhat.com>
Co-authored-by: Andre Fredette <afredette@redhat.com>
Co-authored-by: Dave Tucker <dave@dtucker.co.uk>
Co-authored-by: Tamir Duberstein <tamird@gmail.com>
```
error: the following explicit lifetimes could be elided: 'data, 'file
--> aya-obj/src/obj.rs:1083:6
|
1083 | impl<'data, 'file, 'a> TryFrom<&'a ObjSection<'data, 'file>> for Section<'a> {
| ^^^^^ ^^^^^ ^^^^^ ^^^^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
```
Vegard Kamsvåg
Tamir Duberstein
Michal Rostecki
Kursat Aktas
banditopazzo
dependabot[bot]
tamird
Dave Tucker
dave-tucker
Tyrone Wu
astoycos
GrigorenkoPV
Vladimir Petrzhikovskii