Struct MutableIpv4Packet 

pub struct MutableIpv4Packet<'a> { /* private fields */ }

Represents a mutable IPv4 packet.

Implementations

impl<'a> MutableIpv4Packet<'a>

pub fn new_unchecked(buffer: &'a mut [u8]) -> Self

Create a mutable packet without validating the header fields.

pub fn checksum_mode(&self) -> ChecksumMode

Returns the current checksum recalculation mode.

pub fn set_checksum_mode(&mut self, mode: ChecksumMode)

Updates the checksum recalculation mode.

pub fn enable_auto_checksum(&mut self)

Enables automatic checksum recalculation.

pub fn disable_auto_checksum(&mut self)

Disables automatic checksum recalculation.

pub fn is_checksum_dirty(&self) -> bool

Returns true when the checksum must be recomputed before serialization.

pub fn mark_checksum_dirty(&mut self)

Marks the checksum as stale and triggers recomputation when automatic mode is enabled.

pub fn recompute_checksum(&mut self) -> Option<u16>

Recomputes the IPv4 header checksum using the current buffer contents.

pub fn header_len(&self) -> usize

Returns the header length in bytes.

pub fn payload_len(&self) -> usize

Returns the payload length based on the total length field.

pub fn total_len(&self) -> usize

Returns the effective total length of the packet.

pub fn get_version(&self) -> u8

Retrieve the version field.

pub fn set_version(&mut self, version: u8)

Update the version field.

pub fn get_header_length(&self) -> u8

Retrieve the header length in 32-bit words.

pub fn set_header_length(&mut self, ihl: u8)

Update the header length in 32-bit words.

pub fn get_dscp(&self) -> u8

Retrieve the DSCP field.

pub fn set_dscp(&mut self, dscp: u8)

Update the DSCP field.

pub fn get_ecn(&self) -> u8

Retrieve the ECN field.

pub fn set_ecn(&mut self, ecn: u8)

Update the ECN field.

pub fn get_total_length(&self) -> u16

Retrieve the total length field.

pub fn set_total_length(&mut self, len: u16)

Update the total length field.

pub fn get_identification(&self) -> u16

Retrieve the identification field.

pub fn set_identification(&mut self, id: u16)

Update the identification field.

pub fn get_flags(&self) -> u8

Retrieve the flags field.

pub fn set_flags(&mut self, flags: u8)

Update the flags field.

pub fn get_fragment_offset(&self) -> u16

Retrieve the fragment offset field.

pub fn set_fragment_offset(&mut self, offset: u16)

Update the fragment offset field.

pub fn get_ttl(&self) -> u8

Retrieve the TTL field.

pub fn set_ttl(&mut self, ttl: u8)

Update the TTL field.

pub fn get_next_level_protocol(&self) -> IpNextProtocol

Retrieve the next-level protocol field.

pub fn set_next_level_protocol(&mut self, proto: IpNextProtocol)

Update the next-level protocol field.

pub fn get_checksum(&self) -> u16

Retrieve the checksum field.

pub fn set_checksum(&mut self, checksum: u16)

Update the checksum field.

pub fn get_source(&self) -> Ipv4Addr

Retrieve the source address.

pub fn set_source(&mut self, addr: Ipv4Addr)

Update the source address.

pub fn get_destination(&self) -> Ipv4Addr

Retrieve the destination address.

pub fn set_destination(&mut self, addr: Ipv4Addr)

Update the destination address.

Trait Implementations

impl<'a> MutablePacket<'a> for MutableIpv4Packet<'a>

type Packet = Ipv4Packet

The immutable packet type associated with this mutable view.

fn new(buffer: &'a mut [u8]) -> Option<Self>

Construct a mutable packet from the provided buffer.

fn packet(&self) -> &[u8]

Get a shared view over the entire packet buffer.

fn packet_mut(&mut self) -> &mut [u8]

Get a mutable view over the entire packet buffer.

fn header(&self) -> &[u8]

Get the serialized header bytes of the packet.

fn header_mut(&mut self) -> &mut [u8]

Get a mutable view over the serialized header bytes of the packet.

fn payload(&self) -> &[u8]

Get the payload bytes of the packet.

fn payload_mut(&mut self) -> &mut [u8]

Get a mutable view over the payload bytes of the packet.

fn freeze(&self) -> Option<Self::Packet>

Convert the mutable packet into its immutable counterpart.