Add `{:mac}` (for lower-case hex representation) and `{:MAC}` (for
upper-case hex representation) format hints for the `[u8; 6]` type,
which is the standard one in Linux to store physical addresses in.
Tested with: https://github.com/vadorovsky/aya-examples/tree/main/xdp-mac
Signed-off-by: Michal Rostecki <vadorovsky@gmail.com>
Instead of returning anyhow>>Result<()> handle errors
'in-place' with unwrap or panic, for more informative
and user-friendly error messages on test failures.
Fixes#421.
Signed-off-by: Dmitry Savintsev <dsavints@gmail.com>
Fix some broken rust doc links.
Make sure rustdoc build fail on warnings
so we catch these broken links in CI.
Signed-off-by: Andrew Stoycos <astoycos@redhat.com>
switch map() and map_mut() from returning a
`Result` to an `Option` since it's just getting
a value from a Hashmap, and to stay in line with
the Programs API.
Remove `MapError::MapNotFound`
Signed-off-by: Andrew Stoycos <astoycos@redhat.com>
Remove MapError::UnexpectedMapType
Add Macro for converting from aya::Map to
u32 (map type) for use in
`MapError::InvalidMapType { map_type: x }`
Signed-off-by: Andrew Stoycos <astoycos@redhat.com>
Respond to more review comments:
Revert to try_from in doctests so we don't need
to explicitly specify type parameters.
Fixup some documentation
Remove explit types in `try_from` methods
Signed-off-by: Andrew Stoycos <astoycos@redhat.com>
Implement Copy for MapData so that
when `take_map` is used we create a
1 to 1 mapping of MapData to internal
FileDescriptor. This will ensure
that when MapData is used in multiple
tasks that we don't drop the FD before
all tasks are done using it.
Signed-off-by: Andrew Stoycos <astoycos@redhat.com>
Create a new type called `SockMapFd` which is
solely used when a program needs to attach
to a socket map. In the future this same
tatic could be used for other use cases
so we may make this more generic.
Signed-off-by: Andrew Stoycos <astoycos@redhat.com>
Build completing tests passing
Refactor the Map API to better align
with the aya programs API. Specifically
remove all internal locking mechanisms
and custom Deref/DerefMut implementations.
They are replaced with a Map enum
and AsRef/AsMut implementations.
All Try_From implementations have been moved
to standardized enums, with a slightly
special one for PerfEventArray's.
Also cleanup/fix all associated tests and
documentation.
Signed-off-by: Andrew Stoycos <astoycos@redhat.com>
Following the lead of crates like tokio and nix, we now annotate APIs
that require optional features. This helps in cases where a user wants
to have an `AsyncPerfEventArray` which is documented on crates.io, but
it's not obvious that you have to enable the `async` feature.
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
We often need to wait a bit until the program or link gets unloaded
after dropping.
Also, using a macro makes it clear in which particular test the panic
happened.
Signed-off-by: Michal Rostecki <vadorovsky@gmail.com>
libbpf 1.0 doesn't support multimaps defined in `maps` section, it
supports only BTF maps.
At the same time, we already test multimaps loading with the Rust
example (`integration-ebpf/src/bpf/map_test.rs`), so we can just remove
the failing C test.
Signed-off-by: Michal Rostecki <vadorovsky@gmail.com>
`override_syscall` performs integer-to-pointer conversion. This is
considered harmful on the newest Rust nightly which provides
`ptr::from_exposed_addr`, but there is no other way on Rust stable than
doing `as *const T`, which is what miri is unhappy about.
Signed-off-by: Michal Rostecki <vadorovsky@gmail.com>
Add BpfLoader::set_max_entries, which sets the max_entries for the
specified map, as the load-time option.
The max_entries set at map initialization in the ebpf component can be
overwritten by this method called on the userspace component.
If you want to set max_entries for multiple maps in an ebpf component,
you can do so by calling set_max_entries in the form of a method chain.
Fixes: #308
Refs: #292
Miri took issue about using slice::from_raw_parts without checking for
alignment. Instead, we can simply convert to a [u8;16] into a [u16;8] by
iterating in chunks of 2 and bitshifting (remembering that these arrays
are in network-endian order).
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
Add `from_pinned` to allow loading BPF maps
from pinned points in the bpffs and
`from_fd` to allow loading BPF maps from
RawFds aquired via some other means eg
a unix socket.
These functions return an
aya::Map which has not been used previously
but will be the future abstraction once
all bpf maps are represented as an enum.
Signed-off-by: Andrew Stoycos <astoycos@redhat.com>
Michal Rostecki
Dmitry Savintsev
Alessandro Decina
Andrew Stoycos
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Dave Tucker
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