[PATCH v2 nf-next 1/5] netfilter: nft: UAPI headers for routing expression

["Anders K. Pedersen | Cohaesio" <akp@cohaesio.com>]

From: Anders K. Pedersen <akp@cohaesio.com>

Add new UAPI header definitions for nftables "rt" expression, which will
enable usage of routing related data.

Signed-off-by: Anders K. Pedersen <akp@cohaesio.com>
---
v2
- fix comments for enum nft_rt_keys

 include/uapi/linux/netfilter/nf_tables.h |  27 ++++++
 1 files changed, 27 insertions(+)

diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h
index c6c4477..1992766 100644
--- a/include/uapi/linux/netfilter/nf_tables.h
+++ b/include/uapi/linux/netfilter/nf_tables.h
@@ -759,6 +759,17 @@ enum nft_meta_keys {
 };
 
 /**
+ * enum nft_rt_keys - nf_tables routing expression keys
+ *
+ * @NFT_RT_CLASSID: realm value of packet's route (skb->dst->tclassid)
+ * @NFT_RT_NEXTHOP: routing nexthop
+ */
+enum nft_rt_keys {
+	NFT_RT_CLASSID,
+	NFT_RT_NEXTHOP,
+};
+
+/**
  * enum nft_hash_attributes - nf_tables hash expression netlink attributes
  *
  * @NFTA_HASH_SREG: source register (NLA_U32)
@@ -797,6 +808,22 @@ enum nft_meta_attributes {
 #define NFTA_META_MAX		(__NFTA_META_MAX - 1)
 
 /**
+ * enum nft_rt_attributes - nf_tables routing expression netlink attributes
+ *
+ * @NFTA_RT_DREG: destination register (NLA_U32)
+ * @NFTA_RT_KEY: meta data item to load (NLA_U32: nft_rt_keys)
+ * @NFTA_RT_FAMILY: Address family (NLA_U32)
+ */
+enum nft_rt_attributes {
+	NFTA_RT_UNSPEC,
+	NFTA_RT_DREG,
+	NFTA_RT_KEY,
+	NFTA_RT_FAMILY,
+	__NFTA_RT_MAX
+};
+#define NFTA_RT_MAX		(__NFTA_RT_MAX - 1)
+
+/**
  * enum nft_ct_keys - nf_tables ct expression keys
  *
  * @NFT_CT_STATE: conntrack state (bitmask of enum ip_conntrack_info)