Time since boot is defined as the UNIX_EPOCH plus the duration
since boot. which is realtime - boottime NOT boottime - realtime.
Add a integration test to ensure this doesn't happen again.
Signed-off-by: astoycos <astoycos@redhat.com>
On startup, the kernel is probed for support of chained program ids for
CpuMap, DevMap and DevMapHash, and will patch maps at load time to have
the proper size. Then, at runtime, the support is checked and will error
out if a program id is passed when the kernel does not support it.
The implementation changed since the original commit was written, and
some mistakes went in:
- missing bpf_redirect_map wrapper
- extra bpf_map_lookup_elem on maps for which it is forbidden
This commit adds implementations for:
- xskmap
- devmap
- devmap_hash
- cpumap
Which can all be used to redirect XDP packets to various different
locations
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
This is to solve a use-case where a user (in this case bpfd) may want
to:
- MapData::from_pin to open a pinned map from bpffs
- MapData::pin to pin that object into another bpffs
Both operations should be easily accomplished without needing to cast
a MapData into a concrete Map type - e.g aya::maps::HashMap.
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
BPF objects can be pinned multiple times, to multiple different places.
Tracking whether or not a map is pinned in a bool is therefore not sufficient.
We could track this in a HashSet<PathBuf>, but there is really no reason
to track it at all.
Signed-off-by: Dave Tucker <dave@dtucker.co.uk>
`MapData::fd` is now a `MapFd`. This means that `MapData` now closes the
file descriptor on drop. In the future we might consider making `MapFd`
hold a `BorrowedFd` but this requires API design work due to overlapping
borrows.
Since `SockMapFd` is no longer `Copy`, attach methods to take it by
reference to allow callers to use it multiple times as they are
accustomed to doing.
`SockMapFd` implements `try_clone`. `MapFd` and `SockMapFd` are now
returned by reference to allow callers to avoid file descriptor cloning
when desired.
This is an API breaking change.
Updates #612.
Add a new api to the outer level `Program` structure which
allows users to get the program's kernel info before casting
it to an explicit program variant.
Signed-off-by: astoycos <astoycos@redhat.com>
The macro to implement TryFrom for MapData didn't have the ability to
specify that more than one variant of MapData can be valid for a single
map implementation. Support for new syntax was added to the macro so that
the implementation can succeed for both valid variants in the HashMap
and PerCpuHashMap impl.
Fixes#636
The old macros were repetitive and inflexible. This unifies the various
macros used to generate TryFrom implementations for map implementations
from the relevant map enum variants.
Cleanup in anticipation of fixing #636.
The API changes are just about renaming the return to Self and
Self::Error; they are not real changes.
dependabot[bot]
Alessandro Decina
Tuetuopay
Andrew Stoycos
Dave Tucker
Tamir Duberstein
ajwerner