Enum route_verification_ir::filter::Filter

pub enum Filter {
    FilterSet(String),
    Any,
    AddrPrefixSet(Vec<AddrPfxRange>),
    RouteSet(String, RangeOperator),
    AsNum(u32, RangeOperator),
    AsSet(String, RangeOperator),
    AsPathRE(String),
    PeerAS,
    And {
        left: Box<Filter>,
        right: Box<Filter>,
    },
    Or {
        left: Box<Filter>,
        right: Box<Filter>,
    },
    Not(Box<Filter>),
    Group(Box<Filter>),
    Community(Call),
    Unknown(String),
}

The filter attribute defines the set’s policy filter. A policy filter is a logical expression which when applied to a set of routes returns a subset of these routes. We say that the policy filter matches the subset returned. The policy filter can match routes using any BGP path attribute, such as the destination address prefix (or NLRI), AS-path, or community attributes.

https://www.rfc-editor.org/rfc/rfc2622#section-5.4

Range operators can also be applied to address prefix sets. In this case, they distribute over the members of the set. For example, for a route-set (defined later) rs-foo, rs-foo^+ contains all the inclusive more specifics of all the prefixes in rs-foo.

https://www.rfc-editor.org/rfc/rfc2622#page-5

Note: although RouteSet, AsNum, and AsSet here use RangeOperator, the RFC only allows ^- and ^+.

Variants

FilterSet(String)

<filter-set-name>: An RPSL name that starts with fltr-.

Any

AddrPrefixSet(Vec<AddrPfxRange>)

Address-Prefix Set This is an explicit list of address prefixes enclosed in braces ‘{’ and ‘}’. The policy filter matches the set of routes whose destination address-prefix is in the set.

An address prefix can be optionally followed by a range operator

RouteSet(String, RangeOperator)

Route Set Name A route set name matches the set of routes that are members of the set. A route set name may be a name of a route-set object, an AS number, or a name of an as-set object (AS numbers and as-set names implicitly define route sets; please see Section 5.3).

A route set name can also be followed by one of the operators ‘^-’, ‘^+’…

AsNum(u32, RangeOperator)

An AS number.

AsSet(String, RangeOperator)

A name of an as-set object.

AsPathRE(String)

AS Path Regular Expressions An AS-path regular expression can be used as a policy filter by enclosing the expression in ‘<’ and ‘>’. An AS-path policy filter matches the set of routes which traverses a sequence of ASes matched by the AS-path regular expression.

PeerAS

PeerAS can be used instead of the AS number of the peer AS.

And

Fields

left: Box<Filter>

right: Box<Filter>

Or

Fields

left: Box<Filter>

right: Box<Filter>

Not(Box<Filter>)

Group(Box<Filter>)

Community(Call)

Unknown(String)

Trait Implementations

impl Clone for Filter

fn clone(&self) -> Filter

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Filter

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Filter

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Filter

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 Filter

fn cmp(&self, other: &Filter) -> 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 + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for Filter

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for Filter

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Serialize for Filter

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Filter

impl StructuralPartialEq for Filter