75 Commits (e997f4f93d99c4c28885ef71ee9262e22de4462a)

Author	SHA1	Message	Date
Dave Tucker	f976229477	Support BTF Maps ... 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>	3 years ago
Andrew Burkett	36edf09254	Have bpf_map_update_elem take Option<&K> for key ... 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.	3 years ago
Dave Tucker	d1f2215193	aya: Relocate maps using symbol_index ... Since we support multiple maps in the same section, the section_index is no longer a unique way to identify maps. This commit uses the symbol index as the identifier, but falls back to section_index for rodata and bss maps since we don't retrieve the symbol_index during parsing. Signed-off-by: Dave Tucker <dave@dtucker.co.uk>	3 years ago
Dave Tucker	65a0b83205	Mark .rodata maps as readonly and freeze on load ... This commit marks .rodata maps as BPF_F_RDONLY_PROG when loaded to prevent a BPF program mutating them. Initial map data is populated by the loader using the new `BpfLoader::set_global()` API. The loader will mark is marked as frozen using bpf_map_freeze to prevent map data being changed from userspace. Signed-off-by: Dave Tucker <dave@dtucker.co.uk>	4 years ago
Thia Wyrod	18970369e2	aya: Remove unnecessary unsafe markers on map iteration. ... 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.	4 years ago
Alessandro Decina	07a6016ebb	Merge pull request #120 from eero-thia/thia/dedup ... aya: eliminate name duplication in maps and programs.	4 years ago
Thia Wyrod	f56dd0a70b	aya: eliminate name duplication in maps and programs. ... 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().	4 years ago
Thia Wyrod	daa7ea6d0d	aya: remove unnecessary usage of &dyn trait in favor of impl trait. ... This should improve performance in most situations by eliminating unnecessary fat pointer indirection.	4 years ago
Dave Tucker	9426f36f79	Implement Pinning For Programs and Maps ... 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>	4 years ago
Alessandro Decina	0878c4505a	aya: fix clippy warnings	4 years ago
Arnabjyoti Kalita	35f15f70e0	aya: add minimum kernel version for each map and program type (#18)	4 years ago
Rafael Ortiz	d8d311738c	aya: support both bpf_map_def layout variants ... Libbpf and iproute2 use two slightly different `bpf_map_def` layouts. This change implements support for loading both. Refs: #10, #14	4 years ago
Alessandro Decina	293e66af65	More docs	4 years ago
Alessandro Decina	11e21e83be	More docs	4 years ago
Alessandro Decina	6ecf7dabf3	aya: tweak PerfEventArray docs	4 years ago
Alessandro Decina	40b7da6655	aya: add id and pinning fields to bpf_map_def	4 years ago
Alessandro Decina	0b3e532d7a	aya: small doc fixes	5 years ago
Alessandro Decina	ad6d0596ab	aya: tweak docs	5 years ago
Alessandro Decina	74d5f17559	aya: rework IterableMap and ProgramArray ... Make MapKeys not use IterableMap. Leave only ProgramArray::get, ProgramArray::set and ProgramArray::unset exposed as the other syscalls don't work consistently for program arrays.	5 years ago
Alessandro Decina	c3b902137b	aya: add aya::maps::array and move ProgramArray under it	5 years ago
Alessandro Decina	6cec8be564	aya: hash_map: add doc aliases for HASH and LRU_HASH	5 years ago
Alessandro Decina	7a989b43b9	aya: per_cpu_hash_map: add support for BPF_MAP_TYPE_LRU_PERCPU_HASH	5 years ago
Alessandro Decina	635dcd44b9	aya: maps: introduce MapError::KeyNotFound ... Change get() from -> Result<Option<V>, MapError> to -> Result<V, MapError> where MapError::KeyNotFound is returned instead of Ok(None) to signify that the key is not present.	5 years ago
Alessandro Decina	3a5b289163	aya: add PerCpuHashMap	5 years ago
Alessandro Decina	d5098c9e57	aya: move hash_map.rs to hash_map/hash_map.rs	5 years ago