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>
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>
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>
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>
This commit allows for BTF maps in the .maps ELF section to be parsed.
It reads the necessary information from the BTF section of the ELF file.
While the btf_ids of Keys and Values types are stored, they are not (yet)
used.
When creating a BTF map, we pass the btf_key_type_id and
btf_value_type_id.
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
bpf_map_update_elem is used in lieu of bpf_map_push_elem to maintain support for kernel version < 4.20. The kernel expects a null pointer for the key for this use case. With this change, if you pass None as key to `bpf_map_update_elem`, it will pass null as key.
Map iteration can yield stale keys and values by virtue of sharing a
data structure with BPF programs which can modify it. However, all
accesses remain perfectly safe and will not cause memory corruption or
data races.
Map and ProgramData objects had unnecessarily cloned strings for their
names, despite them being just as easily available to external users via
bpf.maps() and bpf.programs().
This commit adds 2 new methods to aya::sys
- bpf_pin_object
- bpf_get_object
Which allow the pinning and retrieval of programs/maps to bpffs.
It adds a `Program.pin` API, such that a loaded program can be pinned.
For map pinning, the user must ensure the `pinning u32` in the
`bpf_map_def` is set to 1, maps will be pinned using a new builder API.
BpfLoader::new().map_pin_path("/sys/fs/bpf/myapp").load_file("myapp.o")
This will pin all maps whose definition requests pinning to path + name.
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
Dave Tucker
Ricky Han
Andrew Stoycos
abhijeetbhagat
Michal Rostecki
Andrew Burkett
Thia Wyrod
Alessandro Decina
Arnabjyoti Kalita