add support for rt expression

1 files changed, 37 insertions, 0 deletions

diff --git a/src/expr/rt.rs b/src/expr/rt.rs
new file mode 100644
index 0000000..5ed9272
--- /dev/null
+++ b/src/expr/rt.rs
@@ -0,0 +1,37 @@
+use rustables_macros::{nfnetlink_enum, nfnetlink_struct};
+
+use crate::sys::{
+    NFTA_RT_DREG, NFTA_RT_KEY, NFT_RT_CLASSID, NFT_RT_NEXTHOP4, NFT_RT_NEXTHOP6, NFT_RT_TCPMSS,
+};
+
+use super::{Expression, Register};
+
+/// Kind of routing information.
+#[derive(Debug, Copy, Clone, Eq, PartialEq)]
+#[nfnetlink_enum(u32, nested = true)]
+pub enum RtKey {
+    /// Class ID.
+    ClassID = NFT_RT_CLASSID,
+    /// Next IPv4 hop.
+    NextHop4 = NFT_RT_NEXTHOP4,
+    /// Next IPv6 hop.
+    NextHop6 = NFT_RT_NEXTHOP6,
+    /// TCP MSS.
+    TCPMSS = NFT_RT_TCPMSS,
+}
+
+/// Loads routing information into a register.
+#[derive(Default, Debug, Clone, PartialEq, Eq)]
+#[nfnetlink_struct(nested = true)]
+pub struct Rt {
+    #[field(NFTA_RT_DREG)]
+    dreg: Register,
+    #[field(NFTA_RT_KEY)]
+    key: RtKey,
+}
+
+impl Expression for Rt {
+    fn get_name() -> &'static str {
+        "rt"
+    }
+}