Struct capsule::packets::icmp::v6::PacketTooBig

pub struct PacketTooBig<E: Ipv6Packet> { /* fields omitted */ }

Packet Too Big Message defined in IETF RFC 4443.

 0                   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
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|     Type      |     Code      |          Checksum             |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                             MTU                               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                    As much of invoking packet                 |
+               as possible without the ICMPv6 packet           +
|               exceeding the minimum IPv6 MTU [IPv6]           |

• MTU: The Maximum Transmission Unit of the next-hop link.

Implementations

impl<E: Ipv6Packet> PacketTooBig<E>

pub fn mtu(&self) -> u32

Returns the MTU of the next-hop link.

pub fn set_mtu(&mut self, mtu: u32)

Sets the MTU of the next-hop link.

pub fn data(&self) -> &[u8]

Returns the invoking packet as a u8 slice.

Trait Implementations

impl<E: Ipv6Packet> Debug for PacketTooBig<E>

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

Formats the value using the given formatter.

impl<E: Ipv6Packet> Icmpv6Message for PacketTooBig<E>

type Envelope = E

The preceding packet type that encapsulates this message.

fn msg_type() -> Icmpv6Type

Returns the assigned message type.

fn icmp(&self) -> &Icmpv6<Self::Envelope>

Returns a reference to the generic ICMPv6 packet.

fn icmp_mut(&mut self) -> &mut Icmpv6<Self::Envelope>

Returns a mutable reference to the generic ICMPv6 packet.

fn into_icmp(self) -> Icmpv6<Self::Envelope>

Converts the message back to the generic ICMPv6 packet.

unsafe fn clone(&self, internal: Internal) -> Self

Returns a copy of the message.

fn try_parse(
    icmp: Icmpv6<Self::Envelope>,
    _internal: Internal
) -> Fallible<Self>

Parses the ICMPv6 packet's payload as this message type.

fn try_push(icmp: Icmpv6<Self::Envelope>, _internal: Internal) -> Fallible<Self>

Prepends a new ICMPv6 message to the beginning of the envelope's payload.

fn reconcile(&mut self)

Reconciles the derivable header fields against the changes made to the packet.

• the whole packet is truncated so it doesn't exceed the minimum IPv6 MTU.
• checksum is computed based on the pseudo-header and the PacketTooBig message.

impl<E: Ipv6Packet> Icmpv6Packet for PacketTooBig<E>

fn msg_type(&self) -> Icmpv6Type

Returns the message type.

fn code(&self) -> u8

Returns the code.

fn set_code(&mut self, code: u8)

Sets the code.

fn checksum(&self) -> u16

Returns the checksum.

impl<E: Ipv6Packet> Packet for PacketTooBig<E>

type Envelope = E

The preceding packet type that encapsulates this packet.

fn envelope(&self) -> &Self::Envelope

Returns a reference to the envelope.

fn envelope_mut(&mut self) -> &mut Self::Envelope

Returns a mutable reference to the envelope.

fn offset(&self) -> usize

Returns the buffer offset where the current packet begins.

fn header_len(&self) -> usize

Returns the length of the packet header.

unsafe fn clone(&self, internal: Internal) -> Self

Returns a copy of the packet.

fn try_parse(envelope: Self::Envelope, _internal: Internal) -> Fallible<Self>

Parses the envelope's payload as this packet type.

fn try_push(envelope: Self::Envelope, internal: Internal) -> Fallible<Self>

Prepends a new packet to the beginning of the envelope's payload.

fn deparse(self) -> Self::Envelope

Deparses the packet back to the envelope's packet type.

fn reconcile(&mut self)

Reconciles the derivable header fields against the changes made to the packet.

fn mbuf(&self) -> &Mbuf

Returns a reference to the raw message buffer.

fn mbuf_mut(&mut self) -> &mut Mbuf

Returns a mutable reference to the raw message buffer.

fn payload_offset(&self) -> usize

Returns the buffer offset where the packet payload begins.

fn len(&self) -> usize

Returns the length of the packet with the payload.

fn payload_len(&self) -> usize

Returns the length of the packet payload.

fn parse<T: Packet<Envelope = Self>>(self) -> Fallible<T> where
    Self: Sized, 

Parses the packet's payload as a packet of type T.

fn peek<T: Packet<Envelope = Self>>(&self) -> Fallible<Immutable<T>> where
    Self: Sized, 

Peeks into the packet's payload as a packet of type T.

fn push<T: Packet<Envelope = Self>>(self) -> Fallible<T> where
    Self: Sized, 

Prepends a new packet of type T to the beginning of the envelope's payload.

fn remove(self) -> Fallible<Self::Envelope> where
    Self: Sized, 

Removes this packet's header from the message buffer.

fn remove_payload(&mut self) -> Fallible<()>

Removes the packet's payload from the message buffer.

fn reset(self) -> Mbuf where
    Self: Sized, 

Resets the parsed packet back to Mbuf.

fn reconcile_all(&mut self)

Reconciles against the changes recursively through all layers.