Struct capsules::net::sixlowpan::TxState

struct TxState {
    packet: TakeCell<'static, [u8]>,
    src_pan: Cell<PanID>,
    dst_pan: Cell<PanID>,
    src_mac_addr: Cell<MacAddress>,
    dst_mac_addr: Cell<MacAddress>,
    security: Cell<Option<(SecurityLevel, KeyId)>>,
    dgram_tag: Cell<u16>,
    dgram_size: Cell<u16>,
    dgram_offset: Cell<usize>,
    tx_dgram_tag: Cell<u16>,
    tx_busy: Cell<bool>,
    tx_buf: TakeCell<'static, [u8]>,
}

Tracks the global transmit state for a single IPv6 packet.

Since transmit is serialized, the Sixlowpan struct only contains a reference to a single TxState (that is, we can only have a single outstanding transmission at the same time).

This struct maintains a reference to the full IPv6 packet, the source/dest MAC addresses and PanIDs, security/compression/fragmentation options, per-fragmentation state, and some global state.

Fields

packet: TakeCell<'static, [u8]>

src_pan: Cell<PanID>

dst_pan: Cell<PanID>

src_mac_addr: Cell<MacAddress>

dst_mac_addr: Cell<MacAddress>

security: Cell<Option<(SecurityLevel, KeyId)>>

dgram_tag: Cell<u16>

dgram_size: Cell<u16>

dgram_offset: Cell<usize>

tx_dgram_tag: Cell<u16>

tx_busy: Cell<bool>

tx_buf: TakeCell<'static, [u8]>

Methods

impl TxState

fn new(tx_buf: &'static mut [u8]) -> TxState

Creates a new TxState

Arguments

tx_buf - A buffer for storing fragments the size of a 802.15.4 frame. This buffer must be at least radio::MAX_FRAME_SIZE bytes long.

fn is_transmit_done(&self) -> bool

fn init_transmit(
    &self,
    src_mac_addr: MacAddress,
    dst_mac_addr: MacAddress,
    packet: &'static mut [u8],
    packet_len: usize,
    security: Option<(SecurityLevel, KeyId)>
)

fn start_transmit(
    &self,
    dgram_tag: u16,
    frag_buf: &'static mut [u8],
    radio: &MacDevice,
    ctx_store: &ContextStore
) -> Result<(), (ReturnCode, &'static mut [u8])>

fn prepare_transmit_first_fragment(
    &self,
    ip6_packet: &[u8],
    frame: Frame,
    radio: &MacDevice,
    ctx_store: &ContextStore
) -> Result<(), (ReturnCode, &'static mut [u8])>

fn prepare_transmit_next_fragment(
    &self,
    frag_buf: &'static mut [u8],
    radio: &MacDevice
) -> Result<(), (ReturnCode, &'static mut [u8])>

fn end_transmit<'a>(
    &self,
    tx_buf: &'static mut [u8],
    client: Option<&'a SixlowpanClient>,
    acked: bool,
    result: ReturnCode
)