Struct Chain 

pub struct Chain {
    pub name: String,
    pub hook_point: HookPoint,
    pub policy: ChainPolicy,
    pub rule_ids: Vec<u64>,
}

A chain of firewall rules evaluated in order

Fields

name: String

Name of this chain (e.g., “INPUT”, “FORWARD”, “custom_chain”)

hook_point: HookPoint

Hook point this chain is attached to

policy: ChainPolicy

Default policy when no rules match

rule_ids: Vec<u64>

Rule IDs in evaluation order (lower index = higher priority)

Implementations

impl Chain

pub fn new(name: &str, hook_point: HookPoint, policy: ChainPolicy) -> Self

Create a new chain with the given name and hook point

pub fn add_rule(&mut self, rule_id: u64)

Append a rule ID to this chain

pub fn remove_rule(&mut self, rule_id: u64) -> bool

Remove a rule ID from this chain

pub fn insert_rule(&mut self, index: usize, rule_id: u64)

Insert a rule ID at the given position

pub fn rule_count(&self) -> usize

Number of rules in this chain

Trait Implementations

impl Clone for Chain

fn clone(&self) -> Chain

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Chain

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

Formats the value using the given formatter.