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use rustables_macros::{nfnetlink_enum, nfnetlink_struct};
use super::{Expression, Register};
use crate::sys;
/// A meta expression refers to meta data associated with a packet.
#[derive(Debug, Copy, Clone, Eq, PartialEq)]
#[nfnetlink_enum(u32)]
#[non_exhaustive]
pub enum MetaType {
/// Packet ethertype protocol (skb->protocol), invalid in OUTPUT.
Protocol = sys::NFT_META_PROTOCOL,
/// Packet mark.
Mark = sys::NFT_META_MARK,
/// Packet input interface index (dev->ifindex).
Iif = sys::NFT_META_IIF,
/// Packet output interface index (dev->ifindex).
Oif = sys::NFT_META_OIF,
/// Packet input interface name (dev->name).
IifName = sys::NFT_META_IIFNAME,
/// Packet output interface name (dev->name).
OifName = sys::NFT_META_OIFNAME,
/// Packet input interface type (dev->type).
IifType = sys::NFT_META_IFTYPE,
/// Packet output interface type (dev->type).
OifType = sys::NFT_META_OIFTYPE,
/// Originating socket UID (fsuid).
SkUid = sys::NFT_META_SKUID,
/// Originating socket GID (fsgid).
SkGid = sys::NFT_META_SKGID,
/// Netfilter protocol (Transport layer protocol).
NfProto = sys::NFT_META_NFPROTO,
/// Layer 4 protocol number.
L4Proto = sys::NFT_META_L4PROTO,
/// Socket control group (skb->sk->sk_classid).
Cgroup = sys::NFT_META_CGROUP,
/// A 32bit pseudo-random number.
PRandom = sys::NFT_META_PRANDOM,
}
#[derive(Clone, PartialEq, Eq, Default, Debug)]
#[nfnetlink_struct]
pub struct Meta {
#[field(sys::NFTA_META_DREG)]
dreg: Register,
#[field(sys::NFTA_META_KEY)]
key: MetaType,
#[field(sys::NFTA_META_SREG)]
sreg: Register,
}
impl Expression for Meta {
fn get_name() -> &'static str {
"meta"
}
}
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