This was mistakenly comparing the exit code of the syscall, which is
always -1 and not the corresponding error-code. Added unit tests to
ensure we don't regress.
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
This adds support for loading XDP programs that are multi-buffer
capable, which is signalled using the xdp.frags section name. When this
is set, we should set the BPF_F_XDP_HAS_FRAGS flag when loading the
program into the kernel.
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
This commit adds from_pin() which allows the creation of a Program
from a path on bpffs. This is useful to be able to call `attach` or
other APIs for programs that are already loaded to the kernel.
This differs from #444 since it implements this on the concrete program
type, not the Program enum, allowing the user to pass in any additional
context that isn't available from bpf_prog_info.
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
Fix a bug which was resulting in `ENOTSUPP` following
the `BPF_MAP_CREATE` Syscall. This fix was initially
found by libbpf maintainers in:
https://github.com/libbpf/libbpf/issues/355.
Signed-off-by: Andrew Stoycos <astoycos@redhat.com>
- Rename `new_tc_link` to `attached`
- Simplified example for `attached`
The following was not requested in reviews:
- Moved example from `SchedClassifierLink` tor
`SchedClassifierLink::attached' since we're only showing an
example of that one method
Signed-off-by: Andre Fredette <afredette@redhat.com>
This is the proposed solution for Step 2 of issue #414
“For cases where you have done program.take_link() to manage
ownership of TcLink we need an API similar to PinnedLink::from_pin
that can reconstruct a TcLink”
As long as a user application continues to run after executing
`take_link()`, the `SchedClassifierLink` returned can be used to
detach the program. However, if we want to handle cases where the
application exits or crashes, we need a way to save and reconstruct
the link, and to do that, we also need to know the information
required for the reconstruction -- namely, the `interface`,
`attach_type`, `priority`, and `handle`. The user knows the first
two because they are required to execute `attach()` in the first
place; however, the user will not know the others if they let the
system choose them.
This pr solves the problems by adding an `impl` for
`SchedClassifierLink` with an accessor for `tc_options` and a `new()`
function.
Signed-off-by: Andre Fredette <afredette@redhat.com>
Currently aya will just report a standard outer level
error on failure. Ensure that we also report the inner
error condition back to the user
Signed-off-by: Andrew Stoycos <astoycos@redhat.com>
- Set the version number of `aya-obj` to `0.1.0`.
- Update the description of the `aya-obj` crate.
- Add a section in README and rustdoc warning about the unstable API.
To split the crate into two, several changes were made:
1. Most `pub(crate)` are now `pub` to allow access from Aya;
2. Parts of BpfError are merged into, for example, RelocationError;
3. BTF part of Features is moved into the new crate;
4. `#![deny(missing_docs)]` is removed temporarily;
5. Some other code gets moved into the new crate, mainly:
- aya::{bpf_map_def, BtfMapDef, PinningType},
- aya::programs::{CgroupSock*AttachType},
The new crate is currenly allowing missing_docs. Member visibility
will be adjusted later to minimize exposure of implementation details.
Refs: #473
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
Kernel 4.15 added a new eBPF program that can
be used with cgroup v2 to control & observe device
access (e.g. read, write, mknod) - `BPF_PROG_TYPE_CGROUP_DEVICE`.
We add the ability to create these programs with the `cgroup_device`
proc macro which creates the `cgroup/dev` link section. Device
details are available to the eBPF program in `DeviceContext`.
The userspace representation is provided with the `CgroupDevice`
structure.
Fixes: #212
Signed-off-by: Milan <milan@mdaverde.com>
Dave Tucker
Alessandro Decina
Andrew Stoycos
Andre Fredette
banditopazzo
Andre Fredette
Michal Rostecki
Shenghui Ye
ajwerner
Ayrton Sparling
Milan
Alexis Bauvin
Dmitry Savintsev
dependabot[bot]