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| 1 | +// SPDX-License-Identifier: MIT |
| 2 | + |
| 3 | +use netlink_packet_core::{ |
| 4 | + emit_u32, parse_u32, parse_u8, DecodeError, DefaultNla, Emitable, |
| 5 | + ErrorContext, Nla, NlaBuffer, Parseable, |
| 6 | +}; |
| 7 | + |
| 8 | +use super::super::{LinkMessage, LinkMessageBuffer}; |
| 9 | + |
| 10 | +const NETKIT_MODE_L2: u32 = 0; |
| 11 | +const NETKIT_MODE_L3: u32 = 1; |
| 12 | + |
| 13 | +#[derive(Debug, PartialEq, Eq, Clone, Copy)] |
| 14 | +#[non_exhaustive] |
| 15 | +pub enum NetkitMode { |
| 16 | + L2, |
| 17 | + L3, |
| 18 | + Other(u32), |
| 19 | +} |
| 20 | + |
| 21 | +impl From<NetkitMode> for u32 { |
| 22 | + fn from(mode: NetkitMode) -> Self { |
| 23 | + match mode { |
| 24 | + NetkitMode::L2 => NETKIT_MODE_L2, |
| 25 | + NetkitMode::L3 => NETKIT_MODE_L3, |
| 26 | + NetkitMode::Other(value) => value, |
| 27 | + } |
| 28 | + } |
| 29 | +} |
| 30 | + |
| 31 | +impl From<u32> for NetkitMode { |
| 32 | + fn from(value: u32) -> Self { |
| 33 | + match value { |
| 34 | + NETKIT_MODE_L2 => NetkitMode::L2, |
| 35 | + NETKIT_MODE_L3 => NetkitMode::L3, |
| 36 | + _ => NetkitMode::Other(value), |
| 37 | + } |
| 38 | + } |
| 39 | +} |
| 40 | + |
| 41 | +const NETKIT_POLICY_PASS: u32 = 0; |
| 42 | +const NETKIT_POLICY_DROP: u32 = 2; |
| 43 | + |
| 44 | +#[derive(Debug, PartialEq, Eq, Clone, Copy)] |
| 45 | +#[non_exhaustive] |
| 46 | +pub enum NetkitPolicy { |
| 47 | + Pass, |
| 48 | + Drop, |
| 49 | + Other(u32), |
| 50 | +} |
| 51 | + |
| 52 | +impl From<NetkitPolicy> for u32 { |
| 53 | + fn from(policy: NetkitPolicy) -> Self { |
| 54 | + match policy { |
| 55 | + NetkitPolicy::Pass => NETKIT_POLICY_PASS, |
| 56 | + NetkitPolicy::Drop => NETKIT_POLICY_DROP, |
| 57 | + NetkitPolicy::Other(value) => value, |
| 58 | + } |
| 59 | + } |
| 60 | +} |
| 61 | + |
| 62 | +impl From<u32> for NetkitPolicy { |
| 63 | + fn from(value: u32) -> Self { |
| 64 | + match value { |
| 65 | + NETKIT_POLICY_PASS => NetkitPolicy::Pass, |
| 66 | + NETKIT_POLICY_DROP => NetkitPolicy::Drop, |
| 67 | + _ => NetkitPolicy::Other(value), |
| 68 | + } |
| 69 | + } |
| 70 | +} |
| 71 | + |
| 72 | +const IFLA_NETKIT_PEER_INFO: u16 = 1; |
| 73 | +const IFLA_NETKIT_PRIMARY: u16 = 2; |
| 74 | +const IFLA_NETKIT_POLICY: u16 = 3; |
| 75 | +const IFLA_NETKIT_PEER_POLICY: u16 = 4; |
| 76 | +const IFLA_NETKIT_MODE: u16 = 5; |
| 77 | + |
| 78 | +#[derive(Debug, PartialEq, Eq, Clone)] |
| 79 | +#[non_exhaustive] |
| 80 | +pub enum InfoNetkit { |
| 81 | + Peer(LinkMessage), |
| 82 | + Primary(bool), |
| 83 | + Policy(NetkitPolicy), |
| 84 | + PeerPolicy(NetkitPolicy), |
| 85 | + Mode(NetkitMode), |
| 86 | + Other(DefaultNla), |
| 87 | +} |
| 88 | + |
| 89 | +impl Nla for InfoNetkit { |
| 90 | + fn value_len(&self) -> usize { |
| 91 | + match *self { |
| 92 | + Self::Peer(ref message) => message.buffer_len(), |
| 93 | + Self::Primary(_) => 1, |
| 94 | + Self::Policy(_) | Self::PeerPolicy(_) | Self::Mode(_) => 4, |
| 95 | + Self::Other(ref attr) => attr.value_len(), |
| 96 | + } |
| 97 | + } |
| 98 | + |
| 99 | + fn emit_value(&self, buffer: &mut [u8]) { |
| 100 | + match *self { |
| 101 | + Self::Peer(ref message) => message.emit(buffer), |
| 102 | + Self::Primary(value) => { |
| 103 | + buffer[0] = value as u8; |
| 104 | + } |
| 105 | + Self::Policy(value) | Self::PeerPolicy(value) => { |
| 106 | + emit_u32(buffer, value.into()).unwrap(); |
| 107 | + } |
| 108 | + Self::Mode(value) => { |
| 109 | + emit_u32(buffer, value.into()).unwrap(); |
| 110 | + } |
| 111 | + Self::Other(ref attr) => attr.emit_value(buffer), |
| 112 | + } |
| 113 | + } |
| 114 | + |
| 115 | + fn kind(&self) -> u16 { |
| 116 | + match *self { |
| 117 | + Self::Peer(_) => IFLA_NETKIT_PEER_INFO, |
| 118 | + Self::Primary(_) => IFLA_NETKIT_PRIMARY, |
| 119 | + Self::Policy(_) => IFLA_NETKIT_POLICY, |
| 120 | + Self::PeerPolicy(_) => IFLA_NETKIT_PEER_POLICY, |
| 121 | + Self::Mode(_) => IFLA_NETKIT_MODE, |
| 122 | + Self::Other(ref attr) => attr.kind(), |
| 123 | + } |
| 124 | + } |
| 125 | +} |
| 126 | + |
| 127 | +impl<'a, T: AsRef<[u8]> + ?Sized> Parseable<NlaBuffer<&'a T>> for InfoNetkit { |
| 128 | + fn parse(buf: &NlaBuffer<&'a T>) -> Result<Self, DecodeError> { |
| 129 | + let payload = buf.value(); |
| 130 | + Ok(match buf.kind() { |
| 131 | + IFLA_NETKIT_PEER_INFO => { |
| 132 | + let err = "failed to parse netkit peer info"; |
| 133 | + let buffer = |
| 134 | + LinkMessageBuffer::new_checked(&payload).context(err)?; |
| 135 | + Self::Peer(LinkMessage::parse(&buffer).context(err)?) |
| 136 | + } |
| 137 | + IFLA_NETKIT_PRIMARY => { |
| 138 | + let value = parse_u8(payload)? != 0; |
| 139 | + Self::Primary(value) |
| 140 | + } |
| 141 | + IFLA_NETKIT_POLICY => Self::Policy(parse_u32(payload)?.into()), |
| 142 | + IFLA_NETKIT_PEER_POLICY => { |
| 143 | + Self::PeerPolicy(parse_u32(payload)?.into()) |
| 144 | + } |
| 145 | + IFLA_NETKIT_MODE => Self::Mode(parse_u32(payload)?.into()), |
| 146 | + kind => Self::Other( |
| 147 | + DefaultNla::parse(buf) |
| 148 | + .context(format!("unknown NLA type {kind} for netkit"))?, |
| 149 | + ), |
| 150 | + }) |
| 151 | + } |
| 152 | +} |
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