- 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>
Use a struct called TcOptions for setting priority and handle in SchedClassifier attach
struct TcOptions implements the Default trait, so for the simple use
case in which the defaults are acceptable, we can call attach as
follows:
attach(“eth0”, TcAttachType::Ingress, TcOptions::default())
To specify all options:
attach(“eth0”, TcAttachType::Ingress, TcOptions { priority: (50), handle: (3) })
Or, some options:
attach(“eth0”, TcAttachType::Ingress, TcOptions { priority: (50), ..Default::default() })
Signed-off-by: Andre Fredette <afredette@redhat.com>
Implements step 1 of https://github.com/aya-rs/aya/issues/414.
- Adds handle to the SchedClassifier attach API
- Saves handle in the TcLink sruct and uses it when detaching programs
NOTE: this changes the API, so it will require a bump in the Aya version.
Signed-off-by: Andre Fredette <afredette@redhat.com>
Andre Fredette
Andre Fredette
Andrew Stoycos
Michal Rostecki
Shenghui Ye
Alessandro Decina
ajwerner
Ayrton Sparling
Milan
Alexis Bauvin
Dmitry Savintsev
dependabot[bot]
0b01