Struct smoltcp::wire::SixlowpanFragPacket

pub struct SixlowpanFragPacket<T: AsRef<[u8]>> { /* private fields */ }

A read/write wrapper around a 6LoWPAN Fragment header. RFC 4944 § 5.3 specifies the format of the header.

A First Fragment header has the following format:

                     1                   2                   3
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|1 1 0 0 0|    datagram_size    |         datagram_tag          |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Subsequent fragment headers have the following format:

                     1                   2                   3
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|1 1 1 0 0|    datagram_size    |         datagram_tag          |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|datagram_offset|
+-+-+-+-+-+-+-+-+

Implementations

impl<T: AsRef<[u8]>> Packet<T>

pub const fn new_unchecked(buffer: T) -> Self

Input a raw octet buffer with a 6LoWPAN Fragment header structure.

pub fn new_checked(buffer: T) -> Result<Self>

Shorthand for a combination of new_unchecked and check_len.

pub fn check_len(&self) -> Result<()>

Ensure that no accessor method will panic if called. Returns Err(Error) if the buffer is too short.

pub fn into_inner(self) -> T

Consumes the frame, returning the underlying buffer.

pub fn dispatch(&self) -> u8

Return the dispatch field.

pub fn datagram_size(&self) -> u16

Return the total datagram size.

pub fn datagram_tag(&self) -> u16

Return the datagram tag.

pub fn datagram_offset(&self) -> u8

Return the datagram offset.

pub fn is_first_fragment(&self) -> bool

Returns true when this header is from the first fragment of a link.

pub fn get_key(&self, ieee802154_repr: &Ieee802154Repr) -> Key

Returns the key for identifying the packet it belongs to.

impl<'a, T: AsRef<[u8]> + ?Sized> Packet<&'a T>

pub fn payload(&self) -> &'a [u8]

Return the payload.

Trait Implementations

impl<T: Clone + AsRef<[u8]>> Clone for Packet<T>

fn clone(&self) -> Packet<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug + AsRef<[u8]>> Debug for Packet<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.