netlink_packet_route/rule/
port_range.rs

1// SPDX-License-Identifier: MIT
2
3use netlink_packet_utils::{DecodeError, Emitable};
4
5const RULE_PORT_RANGE_LEN: usize = 4;
6
7#[derive(Clone, Eq, PartialEq, Debug, Copy)]
8pub struct RulePortRange {
9    pub start: u16,
10    pub end: u16,
11}
12
13impl RulePortRange {
14    pub(crate) fn parse(buf: &[u8]) -> Result<Self, DecodeError> {
15        if buf.len() == RULE_PORT_RANGE_LEN {
16            Ok(Self {
17                start: u16::from_ne_bytes([buf[0], buf[1]]),
18                end: u16::from_ne_bytes([buf[2], buf[3]]),
19            })
20        } else {
21            Err(DecodeError::from(format!(
22                "Invalid rule port range data, expecting \
23                {RULE_PORT_RANGE_LEN} u8 array, but got {:?}",
24                buf
25            )))
26        }
27    }
28}
29
30impl Emitable for RulePortRange {
31    fn buffer_len(&self) -> usize {
32        RULE_PORT_RANGE_LEN
33    }
34
35    fn emit(&self, buffer: &mut [u8]) {
36        buffer[0..2].copy_from_slice(&self.start.to_ne_bytes());
37        buffer[2..4].copy_from_slice(&self.end.to_ne_bytes());
38    }
39}
netlink_packet_route/rule/port_range.rs

netlink_packet_route/rule/
port_range.rs
