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|
use super::{Expression, Rule};
use crate::set::Set;
use rustables_sys::{self as sys, libc};
use std::ffi::CString;
use std::os::raw::c_char;
pub struct Lookup {
set_name: CString,
set_id: u32,
}
impl Lookup {
pub fn new<K>(set: &Set<'_, K>) -> Self {
Lookup {
set_name: set.get_name().to_owned(),
set_id: set.get_id(),
}
}
}
impl Expression for Lookup {
fn to_expr(&self, _rule: &Rule) -> *mut sys::nftnl_expr {
unsafe {
let expr = try_alloc!(sys::nftnl_expr_alloc(
b"lookup\0" as *const _ as *const c_char
));
sys::nftnl_expr_set_u32(
expr,
sys::NFTNL_EXPR_LOOKUP_SREG as u16,
libc::NFT_REG_1 as u32,
);
sys::nftnl_expr_set_str(
expr,
sys::NFTNL_EXPR_LOOKUP_SET as u16,
self.set_name.as_ptr() as *const _ as *const c_char,
);
sys::nftnl_expr_set_u32(expr, sys::NFTNL_EXPR_LOOKUP_SET_ID as u16, self.set_id);
// This code is left here since it's quite likely we need it again when we get further
// if self.reverse {
// sys::nftnl_expr_set_u32(expr, sys::NFTNL_EXPR_LOOKUP_FLAGS as u16,
// libc::NFT_LOOKUP_F_INV as u32);
// }
expr
}
}
}
#[macro_export]
macro_rules! nft_expr_lookup {
($set:expr) => {
$crate::expr::Lookup::new($set)
};
}
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