netlink_packet_route/tc/stats/
basic.rs

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
// SPDX-License-Identifier: MIT

use netlink_packet_utils::traits::{Emitable, Parseable};
use netlink_packet_utils::DecodeError;

/// Byte/Packet throughput statistics
#[derive(Default, Debug, PartialEq, Eq, Clone, Copy)]
#[non_exhaustive]
pub struct TcStatsBasic {
    /// number of seen bytes
    pub bytes: u64,
    /// number of seen packets
    pub packets: u32,
}

// real size is 12, but kernel is align to 64bits(8 bytes)
const STATS_BASIC_LEN: usize = 16;

buffer!(TcStatsBasicBuffer(STATS_BASIC_LEN) {
    bytes: (u64, 0..8),
    packets: (u32, 8..12),
});

impl<T: AsRef<[u8]>> Parseable<TcStatsBasicBuffer<T>> for TcStatsBasic {
    type Error = ();
    fn parse(buf: &TcStatsBasicBuffer<T>) -> Result<Self, ()> {
        Ok(TcStatsBasic { bytes: buf.bytes(), packets: buf.packets() })
    }
}

impl Emitable for TcStatsBasic {
    fn buffer_len(&self) -> usize {
        STATS_BASIC_LEN
    }

    fn emit(&self, buffer: &mut [u8]) {
        let mut buffer = TcStatsBasicBuffer::new(buffer);
        buffer.set_bytes(self.bytes);
        buffer.set_packets(self.packets);
    }
}