diff options
Diffstat (limited to 'src/plugins/nat/nat.h')
| -rw-r--r-- | src/plugins/nat/nat.h | 56 |
1 files changed, 40 insertions, 16 deletions
diff --git a/src/plugins/nat/nat.h b/src/plugins/nat/nat.h index 518f2002056..ab699221e69 100644 --- a/src/plugins/nat/nat.h +++ b/src/plugins/nat/nat.h @@ -187,16 +187,18 @@ typedef enum #define SNAT_SESSION_FLAG_FWD_BYPASS 32 #define SNAT_SESSION_FLAG_AFFINITY 64 #define SNAT_SESSION_FLAG_OUTPUT_FEATURE 128 +#define SNAT_SESSION_FLAG_EXACT_ADDRESS 256 /* NAT interface flags */ #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 -#define NAT_STATIC_MAPPING_FLAG_LB 8 +#define NAT_STATIC_MAPPING_FLAG_ADDR_ONLY 1 +#define NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY 2 +#define NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT 4 +#define NAT_STATIC_MAPPING_FLAG_LB 8 +#define NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS 16 /* *INDENT-OFF* */ typedef CLIB_PACKED(struct @@ -350,6 +352,8 @@ typedef enum typedef struct { + /* prefered pool address */ + ip4_address_t pool_addr; /* local IP address */ ip4_address_t local_addr; /* external IP address */ @@ -388,6 +392,7 @@ typedef struct typedef struct { ip4_address_t l_addr; + ip4_address_t pool_addr; u16 l_port; u16 e_port; u32 sw_if_index; @@ -399,6 +404,7 @@ typedef struct int is_add; int out2in_only; int identity_nat; + int exact; u8 *tag; } snat_static_map_resolve_t; @@ -776,6 +782,12 @@ unformat_function_t unformat_nat_protocol; */ #define is_affinity_sessions(s) (s->flags & SNAT_SESSION_FLAG_AFFINITY) +/** \brief Check if exact pool address should be used. + @param s SNAT session + @return 1 if exact pool address or 0 +*/ +#define is_exact_address_session(s) (s->flags & SNAT_SESSION_FLAG_EXACT_ADDRESS) + /** \brief Check if NAT interface is inside. @param i NAT interface @return 1 if inside interface @@ -818,6 +830,12 @@ unformat_function_t unformat_nat_protocol; */ #define is_lb_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_LB) +/** \brief Check if exact pool address should be used. + @param s SNAT session + @return 1 if exact pool address or 0 +*/ +#define is_exact_address(s) (s->flags & NAT_STATIC_MAPPING_FLAG_EXACT_ADDRESS) + /** \brief Check if client initiating TCP connection (received SYN from client) @param t TCP header @return 1 if client initiating TCP connection @@ -1138,6 +1156,8 @@ void nat44_add_del_address_dpo (ip4_address_t addr, u8 is_add); * @param out2in_only if 1 rule match only out2in direction * @param tag opaque string tag * @param identity_nat identity NAT + * @param pool_addr pool IPv4 address + * @param exact 1 = exact pool address * * @return 0 on success, non-zero value otherwise */ @@ -1146,7 +1166,8 @@ int snat_add_static_mapping (ip4_address_t l_addr, ip4_address_t e_addr, int addr_only, u32 sw_if_index, nat_protocol_t proto, int is_add, twice_nat_type_t twice_nat, u8 out2in_only, - u8 * tag, u8 identity_nat); + u8 * tag, u8 identity_nat, + ip4_address_t pool_addr, int exact); /** * @brief Add/delete static mapping with load-balancing (multiple backends) @@ -1394,16 +1415,18 @@ void expire_per_vrf_sessions (u32 fib_index); /** * @brief Match NAT44 static mapping. * - * @param key address and port to match - * @param addr external/local address of the matched mapping - * @param port port of the matched mapping - * @param fib_index fib index of the matched mapping - * @param by_external if 0 match by local address otherwise match by external - * address - * @param is_addr_only 1 if matched mapping is address only - * @param twice_nat matched mapping is twice NAT type - * @param lb 1 if matched mapping is load-balanced - * @param ext_host_addr external host address + * @param key address and port to match + * @param addr external/local address of the matched mapping + * @param port port of the matched mapping + * @param fib_index fib index of the matched mapping + * @param by_external if 0 match by local address otherwise match by external + * address + * @param is_addr_only 1 if matched mapping is address only + * @param twice_nat matched mapping is twice NAT type + * @param lb 1 if matched mapping is load-balanced + * @param ext_host_addr external host address + * @param is_identity_nat 1 if indentity mapping + * @param out if !=0 set to pointer of the mapping structure * * @returns 0 if match found otherwise 1. */ @@ -1420,7 +1443,8 @@ int snat_static_mapping_match (snat_main_t * sm, twice_nat_type_t * twice_nat, lb_nat_type_t * lb, ip4_address_t * ext_host_addr, - u8 * is_identity_nat); + u8 * is_identity_nat, + snat_static_mapping_t ** out); /** * @brief Add/del NAT address to FIB. |