Struct fidl_fuchsia_net_filter::Matchers

pub struct Matchers {
    pub in_interface: Option<InterfaceMatcher>,
    pub out_interface: Option<InterfaceMatcher>,
    pub src_addr: Option<AddressMatcher>,
    pub dst_addr: Option<AddressMatcher>,
    pub transport_protocol: Option<TransportProtocol>,
    /* private fields */
}

The criteria that a packet must match for a rule to be applied.

Each field is optional, and will only be checked if provided. An unset field will be considered to match any packet. (An entirely empty table would match every packet.) Another way to think of the matching criteria for a given rule is as an AND of every provided matcher.

Some matchers are only available in certain contexts. For example, the in_interface is not available in the EGRESS hook. If a matcher is provided that is not available in the context in which the rule is installed, the installation will fail with an error.

Fields

in_interface: Option<InterfaceMatcher>

The interface on which the packet entered the stack.

Only available in INGRESS, LOCAL_INGRESS, and FORWARDING.

out_interface: Option<InterfaceMatcher>

The interface through which the packet exits the stack.

Only available in FORWARDING, LOCAL_EGRESS, and EGRESS.

src_addr: Option<AddressMatcher>

Matcher for the source IP address.

dst_addr: Option<AddressMatcher>

Matcher for the destination IP address.

transport_protocol: Option<TransportProtocol>

Matchers for the transport layer protocol.

Note that the variants of the TransportProtocol union allow matching on the transport layer protocol itself; to match on specific properties at the transport layer (such as TCP or UDP ports), clients should use the fields of a protocol-specific matcher.

Trait Implementations

impl Clone for Matchers

fn clone(&self) -> Matchers

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Matchers

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

Formats the value using the given formatter.

impl Decode<Matchers> for Matchers

fn new_empty() -> Self

Creates a valid instance of Self. The specific value does not matter, since it will be overwritten by decode.

unsafe fn decode( &mut self, decoder: &mut Decoder<'_>, offset: usize, depth: Depth ) -> Result<()>

Decodes an object of type T from the decoder’s buffers into self.

impl Default for Matchers

fn default() -> Matchers

Returns the “default value” for a type.

impl Encode<Matchers> for &Matchers

unsafe fn encode( self, encoder: &mut Encoder<'_>, offset: usize, depth: Depth ) -> Result<()>

Encodes the object into the encoder’s buffers. Any handles stored in the object are swapped for Handle::INVALID.

impl PartialEq for Matchers

fn eq(&self, other: &Matchers) -> 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 TypeMarker for Matchers

type Owned = Matchers

The owned Rust type which this FIDL type decodes into.

fn inline_align(_context: Context) -> usize

Returns the minimum required alignment of the inline portion of the encoded object. It must be a (nonzero) power of two.

fn inline_size(_context: Context) -> usize

Returns the size of the inline portion of the encoded object, including padding for alignment. Must be a multiple of inline_align.

fn encode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and encoding requires no validation. When true, we can optimize encoding arrays and vectors of Self::Owned to a single memcpy.

fn decode_is_copy() -> bool

Returns true if the memory layout of Self::Owned matches the FIDL wire format and decoding requires no validation. When true, we can optimize decoding arrays and vectors of Self::Owned to a single memcpy.

impl ValueTypeMarker for Matchers

type Borrowed<'a> = &'a Matchers

The Rust type to use for encoding. This is a particular Encode<Self> type cheaply obtainable from &Self::Owned. There are three cases:

fn borrow<'a>(value: &'a <Self as TypeMarker>::Owned) -> Self::Borrowed<'a>

Cheaply converts from &Self::Owned to Self::Borrowed.

impl Persistable for Matchers

impl StructuralPartialEq for Matchers