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use rustables_macros::nfnetlink_struct;
use super::{Expression, Register};
use crate::error::BuilderError;
use crate::parser_impls::NfNetlinkData;
use crate::sys::{
NFTA_BITWISE_DREG, NFTA_BITWISE_LEN, NFTA_BITWISE_MASK, NFTA_BITWISE_SREG, NFTA_BITWISE_XOR,
};
#[derive(Clone, PartialEq, Eq, Default, Debug)]
#[nfnetlink_struct]
pub struct Bitwise {
#[field(NFTA_BITWISE_SREG)]
sreg: Register,
#[field(NFTA_BITWISE_DREG)]
dreg: Register,
#[field(NFTA_BITWISE_LEN)]
len: u32,
#[field(NFTA_BITWISE_MASK)]
mask: NfNetlinkData,
#[field(NFTA_BITWISE_XOR)]
xor: NfNetlinkData,
}
impl Expression for Bitwise {
fn get_name() -> &'static str {
"bitwise"
}
}
impl Bitwise {
/// Returns a new `Bitwise` instance that first masks the value it's applied to with `mask` and
/// then performs xor with the value in `xor`
pub fn new(mask: impl Into<Vec<u8>>, xor: impl Into<Vec<u8>>) -> Result<Self, BuilderError> {
let mask = mask.into();
let xor = xor.into();
if mask.len() != xor.len() {
return Err(BuilderError::IncompatibleLength);
}
Ok(Bitwise::default()
.with_sreg(Register::Reg1)
.with_dreg(Register::Reg1)
.with_len(mask.len() as u32)
.with_xor(NfNetlinkData::default().with_value(xor))
.with_mask(NfNetlinkData::default().with_value(mask)))
}
}
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