Struct IpDscp 

pub struct IpDscp(/* private fields */);

6 bit unsigned integer containing the “Differentiated Services Code Point” (present in the crate::Ipv4Header and in the in crate::Ipv6Header as part of traffic_class).

Established in RFC-2472 and defined/maintained in the IANA dscp-registry

Implementations

impl IpDscp

pub const ZERO: IpDscp

IpDscp with value 0.

pub const MAX_U8: u8 = 63u8

Maximum value of an IPv4 header DSCP.

pub const MAX: IpDscp

Maximum value of DSCP field (6 bits).

pub const CS0: IpDscp

Class Selector 0 (Pool 1) RFC-2474

pub const CS1: IpDscp

Class Selector 1 (Pool 1) RFC-2474

pub const CS2: IpDscp

Class Selector 2 (Pool 1) RFC-2474

pub const CS3: IpDscp

Class Selector 3 (Pool 1) RFC-2474

pub const CS4: IpDscp

Class Selector 4 (Pool 1) RFC-2474

pub const CS5: IpDscp

Class Selector 5 (Pool 1) RFC-2474

pub const CS6: IpDscp

Class Selector 6 (Pool 1) RFC-2474

pub const CS7: IpDscp

Class Selector 7 (Pool 1) RFC-2474

pub const AF11: IpDscp

Assured Forwarding PHB Group 11 (Pool 1) RFC-2597

pub const AF12: IpDscp

Assured Forwarding PHB Group 12 (Pool 1) RFC-2597

pub const AF13: IpDscp

Assured Forwarding PHB Group 13 (Pool 1) RFC-2597

pub const AF21: IpDscp

Assured Forwarding PHB Group 21 (Pool 1) RFC-2597

pub const AF22: IpDscp

Assured Forwarding PHB Group 22 (Pool 1) RFC-2597

pub const AF23: IpDscp

Assured Forwarding PHB Group 23 (Pool 1) RFC-2597

pub const AF31: IpDscp

Assured Forwarding PHB Group 31 (Pool 1) RFC-2597

pub const AF32: IpDscp

Assured Forwarding PHB Group 32 (Pool 1) RFC-2597

pub const AF33: IpDscp

Assured Forwarding PHB Group 11 (Pool 1) RFC-2597

pub const AF41: IpDscp

Assured Forwarding PHB Group 11 (Pool 1) RFC-2597

pub const AF42: IpDscp

Assured Forwarding PHB Group 11 (Pool 1) RFC-2597

pub const AF43: IpDscp

Assured Forwarding PHB Group 11 (Pool 1) RFC-2597

pub const EF: IpDscp

Expedited Forwarding (Pool 1) RFC-3246

pub const VOICE_ADMIT: IpDscp

Voice admit (Pool 1) RFC-5865

pub const LOWER_EFFORT: IpDscp

Lower Effort PHB (Pool 3) RFC-8622

pub const fn try_new(value: u8) -> Result<IpDscp, ValueTooBigError<u8>>

Tries to create an IpDscp and checks that the passed value is smaller or equal than IpDscp::MAX_U8 (6 bit unsigned integer).

In case the passed value is bigger then what can be represented in an 6 bit integer an error is returned. Otherwise an Ok containing the IpDscp.

use etherparse::IpDscp;

let dscp = IpDscp::try_new(32).unwrap();
assert_eq!(dscp.value(), 32);

// if a number that can not be represented in an 6 bit integer
// gets passed in an error is returned
use etherparse::err::{ValueTooBigError, ValueType};
assert_eq!(
    IpDscp::try_new(IpDscp::MAX_U8 + 1),
    Err(ValueTooBigError{
        actual: IpDscp::MAX_U8 + 1,
        max_allowed: IpDscp::MAX_U8,
        value_type: ValueType::IpDscp,
    })
);

pub const unsafe fn new_unchecked(value: u8) -> IpDscp

Creates an IpDscp without checking that the value is smaller or equal than IpDscp::MAX_U8 (6 bit unsigned integer). The caller must guarantee that value <= IpDscp::MAX_U8.

Safety

value must be smaller or equal than IpDscp::MAX_U8 otherwise the behavior of functions or data structures relying on this pre-requirement is undefined.

pub const fn value(self) -> u8

Returns the underlying unsigned 6 bit value as an u8 value.

Trait Implementations

impl Clone for IpDscp

fn clone(&self) -> IpDscp

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IpDscp

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

Formats the value using the given formatter.

impl Default for IpDscp

fn default() -> IpDscp

Returns the “default value” for a type.

impl Display for IpDscp

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

Formats the value using the given formatter.

impl From<IpDscp> for u8

fn from(value: IpDscp) -> Self

Converts to this type from the input type.

impl From<IpDscpKnown> for IpDscp

fn from(value: IpDscpKnown) -> Self

Converts to this type from the input type.

impl Hash for IpDscp

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for IpDscp

fn cmp(&self, other: &IpDscp) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for IpDscp

fn eq(&self, other: &IpDscp) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for IpDscp

fn partial_cmp(&self, other: &IpDscp) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TryFrom<IpDscp> for IpDscpKnown

type Error = IpDscpUnknownValueError

The type returned in the event of a conversion error.

fn try_from(value: IpDscp) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<u8> for IpDscp

type Error = ValueTooBigError<u8>

The type returned in the event of a conversion error.

fn try_from(value: u8) -> Result<Self, Self::Error>

Performs the conversion.

impl Copy for IpDscp

impl Eq for IpDscp

impl StructuralPartialEq for IpDscp