Struct rxdp::PerCpuMap

pub struct PerCpuMap<K, V> { /* fields omitted */ }

Used for working with per-cpu eBPF maps.

Implementations

impl<K: Default, V: ByteAligned> PerCpuMap<K, V>

pub fn create(
    map_type: MapType,
    key_size: u32,
    value_size: u32,
    max_entries: u32,
    map_flags: u32
) -> XDPResult<PerCpuMap<K, V>>

Create a new map.

pub fn new(xdp: &XDPLoadedObject, map_name: &str) -> XDPResult<PerCpuMap<K, V>>

Get access to the eBPF map map_name. This will fail if the requested key size doesn’t match the key size defined in the ELF file.

Trait Implementations

impl<K: Default + Copy, V: ByteAligned> MapLike<K, V> for PerCpuMap<K, V>

fn update_batching_not_supported(&self) -> bool

fn map_fd(&self) -> i32

File descriptor for this map.

fn map_type(&self) -> MapType

fn max_entries(&self) -> u32

The maximum number of entries the map supports

fn update(&self, key: &K, value: &V, flags: MapFlags) -> XDPResult<()>

Update an element in the underlying eBPF map.

fn lookup(&self, key: &K) -> XDPResult<MapValue<V>>

Lookup an element from the underlying eBPF map.

fn update_batch_impl(
    &self,
    keys: &mut Vec<K>,
    values: &mut Vec<V>,
    opts: &bpf_map_batch_opts
) -> (i32, u32)

fn lookup_batch_impl(
    &self,
    batch_size: u32,
    next_key: Option<u32>,
    delete: bool
) -> XDPResult<BatchResult<K, MapValue<V>>>

fn _items(&self) -> XDPResult<Vec<KeyValue<K, MapValue<V>>>>

fn items(&self) -> XDPResult<Vec<KeyValue<K, MapValue<V>>>>

Returns all items in the map. Note that for Array type maps, this will always return max_entries number of items.

fn delete(&self, key: &K) -> XDPResult<()>

Delete an element from the underlying eBPF map.

fn update_batch(
    &self,
    keys: &mut Vec<K>,
    values: &mut Vec<V>,
    flags: MapFlags
) -> XDPResult<u32>

Update a batch of elements in the underlying eBPF map. If the kernel supports it, this will use the BPF_MAP_UPDATE_BATCH syscall to update all elements in 1 call. Otherwise, it is equivalent to calling update() in a loop for every element.

fn lookup_batch(
    &self,
    batch_size: u32,
    next_key: Option<u32>
) -> XDPResult<BatchResult<K, MapValue<V>>>

Lookup a batch of elements from the underlying eBPF map. Returns a BatchResult that includes the next key to pass in to continue looking up elements:

fn lookup_and_delete_batch(
    &self,
    batch_size: u32,
    next_key: Option<u32>
) -> XDPResult<BatchResult<K, MapValue<V>>>

Lookup and delete a batch of elements from the underlying eBPF map. Returns a BatchResult that includes the next key to pass in to continue looking up elements: