Struct Mempool 

pub struct Mempool { /* private fields */ }

Memory pool for packet buffers

A mempool is a fixed-size pool of mbufs. All packet buffers in DPDK must be allocated from a mempool.

Implementations

impl Mempool

pub fn create( name: &str, n: u32, cache_size: u32, data_room_size: u16, socket_id: i32, ) -> DpdkResult<Self>

Create a new mempool for packet buffers

Arguments

• name - Unique name for this mempool (max 32 characters)
• n - Number of elements in the pool
• cache_size - Per-core cache size (0 to disable)
• data_room_size - Size of data buffer in each mbuf
• socket_id - NUMA socket ID (-1 for any)

Errors

Returns an error if:

• The name is empty or too long
• The name contains null bytes
• DPDK mempool creation fails (e.g., out of memory, invalid parameters)

pub fn create_with_config( name: &str, config: &MempoolConfig, ) -> DpdkResult<Self>

Create a new mempool with configuration

Arguments

• name - Unique name for this mempool
• config - Mempool configuration

pub fn create_default(name: &str) -> DpdkResult<Self>

Create a mempool with default configuration

pub fn name(&self) -> &str

Get the name of this mempool

pub fn alloc(&self) -> DpdkResult<Mbuf>

Allocate an mbuf from this pool

pub fn alloc_bulk(&self, count: usize) -> DpdkResult<Vec<Mbuf>>

Allocate multiple mbufs from this pool in a batch

This is more efficient than calling alloc() multiple times. Returns Ok with a vector of mbufs, or Err if allocation fails.

pub fn available_count(&self) -> u32

Get the number of free elements in the pool

pub fn in_use_count(&self) -> u32

Get the number of elements in use

pub fn is_full(&self) -> bool

Check if the pool is full (all elements available)

pub fn is_empty(&self) -> bool

Check if the pool is empty (no elements available)

pub fn as_raw(&self) -> *mut rte_mempool

Get the raw pointer to the mempool

Trait Implementations

impl Drop for Mempool

fn drop(&mut self)

Executes the destructor for this type.

impl Send for Mempool

impl Sync for Mempool