rsmnl-linux 0.1.0

use errno::Errno;
use mnl::{Attr, AttrTbl, MsgVec, Result};
use std::net::{Ipv4Addr, Ipv6Addr};

#[repr(C)]
#[derive(Debug, Clone, Copy)]
pub struct Ifaddrmsg {
    pub ifa_family: u8,
    pub ifa_prefixlen: u8, // The prefix length
    pub ifa_flags: u8,     // Flags
    pub ifa_scope: u8,     // Address scope
    pub ifa_index: u32,    // Link index
}

// Important comment:
// IFA_ADDRESS is prefix address, rather than local interface address.
// It makes no difference for normally configured broadcast interfaces,
// but for point-to-point IFA_ADDRESS is DESTINATION address,
// local address is supplied in IFA_LOCAL attribute.
//
// IFA_FLAGS is a u32 attribute that extends the u8 field ifa_flags.
// If present, the value from struct ifaddrmsg will be ignored.
#[repr(u16)]
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, NlaType)]
#[tbname = "IfAddrTbl"]
pub enum IfAddr {
    // IFA_
    Unspec = 0,

    #[nla_type(Ipv4Addr, address4)]
    #[nla_type(Ipv6Addr, address6)]
    Address = 1,

    #[nla_type(Ipv4Addr, local4)]
    #[nla_type(Ipv6Addr, local6)]
    // others u8 for phonet, u16 decnet
    Local = 2,

    #[nla_type(str, label)]
    Label = 3,

    #[nla_type(Ipv4Addr, broadcast)]
    Broadcast = 4,

    #[nla_type(Ipv6Addr, anycast)]
    Anycast = 5,

    #[nla_type(IfaCacheinfo, cacheinfo)]
    CacheInfo = 6,

    #[nla_type(Ipv6Addr, multicast)]
    Multicast = 7,

    #[nla_type(u32, flags)]
    Flags = 8,

    #[nla_type(u32, rt_priority)]
    RtPriority = 9,

    #[nla_type(i32, target_netnsid)]
    TargetNetnsid = 10,

    _MAX = 11,
}

// ifa_flags
pub const IFA_F_SECONDARY: u32 = 0x01;
pub const IFA_F_TEMPORARY: u32 = IFA_F_SECONDARY;
pub const IFA_F_NODAD: u32 = 0x02;
pub const IFA_F_OPTIMISTIC: u32 = 0x04;
pub const IFA_F_DADFAILED: u32 = 0x08;
pub const IFA_F_HOMEADDRESS: u32 = 0x10;
pub const IFA_F_DEPRECATED: u32 = 0x20;
pub const IFA_F_TENTATIVE: u32 = 0x40;
pub const IFA_F_PERMANENT: u32 = 0x80;
pub const IFA_F_MANAGETEMPADDR: u32 = 0x100;
pub const IFA_F_NOPREFIXROUTE: u32 = 0x200;
pub const IFA_F_MCAUTOJOIN: u32 = 0x400;
pub const IFA_F_STABLE_PRIVACY: u32 = 0x800;

#[repr(C)]
#[derive(Debug, Clone, Copy)]
pub struct IfaCacheinfo {
    pub ifa_prefered: u32,
    pub ifa_valid: u32,
    pub cstamp: u32, // created timestamp, hundredths of seconds
    pub tstamp: u32, // updated timestamp, hundredths of seconds
}