Struct PacketMetadata 

pub struct PacketMetadata {
    pub l2_offset: u16,
    pub l3_offset: u16,
    pub l4_offset: u16,
    pub protocol: Protocol,
    pub ip_version: IpVersion,
    pub flow_hash: u64,
    pub src_port: u16,
    pub dst_port: u16,
    pub flags: u8,
    /* private fields */
}

Pre-parsed packet metadata for fast path processing.

Storing parsed header offsets and protocol information avoids repeated parsing in the hot path.

Fields

l2_offset: u16

Offset to L2 (Ethernet) header from packet start.

l3_offset: u16

Offset to L3 (IP) header from packet start.

l4_offset: u16

Offset to L4 (TCP/UDP) header from packet start.

protocol: Protocol

L4 protocol type.

ip_version: IpVersion

IP version.

flow_hash: u64

Cached flow hash for connection tracking lookups.

src_port: u16

Source port (for TCP/UDP).

dst_port: u16

Destination port (for TCP/UDP).

flags: u8

Packet flags (e.g., TCP flags).

Implementations

impl PacketMetadata

pub const fn new() -> Self

Creates empty metadata.

pub const fn is_tcp(&self) -> bool

Returns true if this is a TCP packet.

pub const fn is_udp(&self) -> bool

Returns true if this is a UDP packet.

pub const fn is_icmp(&self) -> bool

Returns true if this is an ICMP packet.

Trait Implementations

impl Clone for PacketMetadata

fn clone(&self) -> PacketMetadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for PacketMetadata

impl Debug for PacketMetadata

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

Formats the value using the given formatter.

impl Default for PacketMetadata

fn default() -> PacketMetadata

Returns the “default value” for a type.