netfilter: nft_masq: support port range

Complete masquerading support by allowing port range selection.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

2 files changed, 7 insertions, 1 deletions

diff --git a/include/net/netfilter/nft_masq.h b/include/net/netfilter/nft_masq.h
index e2a518b60e19..a3f3c11b2526 100644
--- a/include/net/netfilter/nft_masq.h
+++ b/include/net/netfilter/nft_masq.h
@@ -2,7 +2,9 @@
 #define _NFT_MASQ_H_
 
 struct nft_masq {
-        u32     flags;
+        u32                     flags;
+        enum nft_registers      sreg_proto_min:8;
+        enum nft_registers      sreg_proto_max:8;
 };
 
 extern const struct nla_policy nft_masq_policy[];
diff --git a/include/uapi/linux/netfilter/nf_tables.h b/include/uapi/linux/netfilter/nf_tables.h
index b19be0a098c0..eeffde196f80 100644
--- a/include/uapi/linux/netfilter/nf_tables.h
+++ b/include/uapi/linux/netfilter/nf_tables.h
@@ -951,10 +951,14 @@ enum nft_nat_attributes {
  * enum nft_masq_attributes - nf_tables masquerade expression attributes
  *
  * @NFTA_MASQ_FLAGS: NAT flags (see NF_NAT_RANGE_* in linux/netfilter/nf_nat.h) (NLA_U32)
+ * @NFTA_MASQ_REG_PROTO_MIN: source register of proto range start (NLA_U32: nft_registers)
+ * @NFTA_MASQ_REG_PROTO_MAX: source register of proto range end (NLA_U32: nft_registers)
  */
 enum nft_masq_attributes {
         NFTA_MASQ_UNSPEC,
         NFTA_MASQ_FLAGS,
+        NFTA_MASQ_REG_PROTO_MIN,
+        NFTA_MASQ_REG_PROTO_MAX,
         __NFTA_MASQ_MAX
 };
 #define NFTA_MASQ_MAX           (__NFTA_MASQ_MAX - 1)