Struct nic_queues::TxQueue

pub struct TxQueue<S: TxQueueRegisters, T: TxDescriptor> {
    pub id: u8,
    pub regs: S,
    pub tx_descs: BorrowedSliceMappedPages<T, Mutable>,
    pub num_tx_descs: u16,
    pub tx_cur: u16,
    pub cpu_id: Option<CpuId>,
}

A struct that holds all information for a transmit queue. There should be one such object per queue.

Fields

id: u8

The number of the queue, stored here for our convenience.

regs: S

Registers for this transmit queue

tx_descs: BorrowedSliceMappedPages<T, Mutable>

Transmit descriptors

num_tx_descs: u16

The number of transmit descriptors in the descriptor ring

tx_cur: u16

Current transmit descriptor index

cpu_id: Option<CpuId>

The cpu which this queue is mapped to. This in itself doesn’t guarantee anything but we use this value when setting the cpu id for interrupts and DCA.

Implementations

impl<S: TxQueueRegisters, T: TxDescriptor> TxQueue<S, T>

pub fn send_on_queue(&mut self, transmit_buffer: TransmitBuffer)

Sends a packet on the transmit queue

Arguments:

• transmit_buffer: buffer containing the packet to be sent