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-rw-r--r--src/plugins/nat/nat.h62
1 files changed, 44 insertions, 18 deletions
diff --git a/src/plugins/nat/nat.h b/src/plugins/nat/nat.h
index 1baf10ff43c..0549acdba3a 100644
--- a/src/plugins/nat/nat.h
+++ b/src/plugins/nat/nat.h
@@ -179,6 +179,11 @@ typedef enum
#define NAT_INTERFACE_FLAG_IS_INSIDE 1
#define NAT_INTERFACE_FLAG_IS_OUTSIDE 2
+/* Static mapping flags */
+#define NAT_STATIC_MAPPING_FLAG_ADDR_ONLY 1
+#define NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY 2
+#define NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT 4
+
/* *INDENT-OFF* */
typedef CLIB_PACKED(struct
{
@@ -321,12 +326,8 @@ typedef struct
u16 local_port;
/* external port */
u16 external_port;
- /* 1 = 1:1NAT, 0 = 1:1NAPT */
- u8 addr_only;
/* is twice-nat */
twice_nat_type_t twice_nat;
- /* 1 = rule match only out2in direction */
- u8 out2in_only;
/* local FIB table */
u32 vrf_id;
u32 fib_index;
@@ -342,6 +343,8 @@ typedef struct
nat44_lb_addr_port_t *locals;
/* affinity per service lis */
u32 affinity_per_service_list_head_index;
+ /* flags */
+ u32 flags;
} snat_static_mapping_t;
typedef struct
@@ -358,9 +361,12 @@ typedef struct
u32 sw_if_index;
u32 vrf_id;
snat_protocol_t proto;
+ u32 flags;
int addr_only;
int twice_nat;
int is_add;
+ int out2in_only;
+ int identity_nat;
u8 *tag;
} snat_static_map_resolve_t;
@@ -642,6 +648,24 @@ unformat_function_t unformat_snat_protocol;
*/
#define nat44_is_ses_closed(s) s->state == 0xf
+/** \brief Check if NAT static mapping is address only (1:1NAT).
+ @param sm NAT static mapping
+ @return 1 if 1:1NAT, 0 if 1:1NAPT
+*/
+#define is_addr_only_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_ADDR_ONLY)
+
+/** \brief Check if NAT static mapping match only out2in direction.
+ @param sm NAT static mapping
+ @return 1 if rule match only out2in direction
+*/
+#define is_out2in_only_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY)
+
+/** \brief Check if NAT static mapping is identity NAT.
+ @param sm NAT static mapping
+ @return 1 if identity NAT
+*/
+#define is_identity_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT)
+
/* logging */
#define nat_log_err(...) \
vlib_log(VLIB_LOG_LEVEL_ERR, snat_main.log_class, __VA_ARGS__)
@@ -773,18 +797,19 @@ void nat44_add_del_address_dpo (ip4_address_t addr, u8 is_add);
/**
* @brief Add/delete NAT44 static mapping
*
- * @param l_addr local IPv4 address
- * @param e_addr external IPv4 address
- * @param l_port local port number
- * @param e_port external port number
- * @param vrf_id local VRF ID
- * @param addr_only 1 = 1:1NAT, 0 = 1:1NAPT
- * @param sw_if_index use interface address as external IPv4 address
- * @param proto L4 protocol
- * @param is_add 1 = add, 0 = delete
- * @param twice_nat twice-nat mode
- * @param out2in_only if 1 rule match only out2in direction
- * @param tagi opaque string tag
+ * @param l_addr local IPv4 address
+ * @param e_addr external IPv4 address
+ * @param l_port local port number
+ * @param e_port external port number
+ * @param vrf_id local VRF ID
+ * @param addr_only 1 = 1:1NAT, 0 = 1:1NAPT
+ * @param sw_if_index use interface address as external IPv4 address
+ * @param proto L4 protocol
+ * @param is_add 1 = add, 0 = delete
+ * @param twice_nat twice-nat mode
+ * @param out2in_only if 1 rule match only out2in direction
+ * @param tag opaque string tag
+ * @param identity_nat identity NAT
*
* @return 0 on success, non-zero value otherwise
*/
@@ -793,7 +818,7 @@ int snat_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr,
int addr_only, u32 sw_if_index,
snat_protocol_t proto, int is_add,
twice_nat_type_t twice_nat, u8 out2in_only,
- u8 * tag);
+ u8 * tag, u8 identity_nat);
/**
* @brief Add/delete static mapping with load-balancing (multiple backends)
@@ -1009,7 +1034,8 @@ int snat_static_mapping_match (snat_main_t * sm,
u8 * is_addr_only,
twice_nat_type_t * twice_nat,
lb_nat_type_t * lb,
- ip4_address_t * ext_host_addr);
+ ip4_address_t * ext_host_addr,
+ u8 * is_identity_nat);
/**
* @brief Add/del NAT address to FIB.