#define SNAT_UDP_TIMEOUT 300
-#define SNAT_UDP_TIMEOUT_MIN 120
#define SNAT_TCP_TRANSITORY_TIMEOUT 240
#define SNAT_TCP_ESTABLISHED_TIMEOUT 7440
-#define SNAT_TCP_INCOMING_SYN 6
#define SNAT_ICMP_TIMEOUT 60
#define NAT_FQ_NELTS 64
};
} snat_user_key_t;
+#define foreach_nat_addr_and_port_alloc_alg \
+ _(0, DEFAULT, "default") \
+ _(1, MAPE, "map-e") \
+ _(2, RANGE, "port-range")
+
+typedef enum {
+#define _(v, N, s) NAT_ADDR_AND_PORT_ALLOC_ALG_##N = v,
+ foreach_nat_addr_and_port_alloc_alg
+#undef _
+} nat_addr_and_port_alloc_alg_t;
#define foreach_snat_protocol \
_(UDP, 0, udp, "udp") \
#define NAT44_SES_O2I_FIN 2
#define NAT44_SES_I2O_FIN_ACK 4
#define NAT44_SES_O2I_FIN_ACK 8
+#define NAT44_SES_I2O_SYN 16
+#define NAT44_SES_O2I_SYN 32
#define nat44_is_ses_closed(s) s->state == 0xf
#define SNAT_SESSION_FLAG_TWICE_NAT 8
#define SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT 16
#define SNAT_SESSION_FLAG_FWD_BYPASS 32
+#define SNAT_SESSION_FLAG_AFFINITY 64
#define NAT_INTERFACE_FLAG_IS_INSIDE 1
#define NAT_INTERFACE_FLAG_IS_OUTSIDE 2
ip4_address_t ext_host_addr; /* 68-71 */
u16 ext_host_port; /* 72-73 */
- /* External hos address and port after translation */
+ /* External host address and port after translation */
ip4_address_t ext_host_nat_addr; /* 74-77 */
u16 ext_host_nat_port; /* 78-79 */
#undef _
} snat_address_t;
+typedef struct {
+ u32 fib_index;
+ u32 refcount;
+} nat_outside_fib_t;
+
typedef struct {
u16 in_port;
snat_det_out_key_t out;
u16 port;
u8 probability;
u8 prefix;
+ u32 vrf_id;
+ u32 fib_index;
} nat44_lb_addr_port_t;
typedef enum {
TWICE_NAT_SELF,
} twice_nat_type_t;
+typedef enum {
+ NO_LB_NAT,
+ LB_NAT,
+ AFFINITY_LB_NAT,
+} lb_nat_type_t;
+
typedef struct {
ip4_address_t local_addr;
ip4_address_t external_addr;
u32 vrf_id;
u32 fib_index;
snat_protocol_t proto;
- u32 worker_index;
+ u32 affinity;
+ u32 *workers;
u8 *tag;
nat44_lb_addr_port_t *locals;
+ u32 affinity_per_service_list_head_index;
} snat_static_mapping_t;
typedef struct {
clib_bihash_8_8_t out2in;
clib_bihash_8_8_t in2out;
+ /* Endpoint dependent sessions lookup tables */
+ clib_bihash_16_8_t out2in_ed;
+ clib_bihash_16_8_t in2out_ed;
+
/* Find-a-user => src address lookup */
clib_bihash_8_8_t user_hash;
u32 snat_thread_index);
typedef struct snat_main_s {
- /* Endpoint address dependent sessions lookup tables */
- clib_bihash_16_8_t out2in_ed;
- clib_bihash_16_8_t in2out_ed;
-
snat_icmp_match_function_t * icmp_match_in2out_cb;
snat_icmp_match_function_t * icmp_match_out2in_cb;
u32 num_workers;
u32 first_worker_index;
- u32 next_worker;
u32 * workers;
snat_get_worker_function_t * worker_in2out_cb;
snat_get_worker_function_t * worker_out2in_cb;
/* Vector of outside addresses */
snat_address_t * addresses;
+ /* Address and port allocation function */
nat_alloc_out_addr_and_port_function_t *alloc_addr_and_port;
+ /* Address and port allocation type */
+ nat_addr_and_port_alloc_alg_t addr_and_port_alloc_alg;
+ /* Port set parameters (MAP-E) */
u8 psid_offset;
u8 psid_length;
u16 psid;
+ /* Port range parameters */
+ u16 start_port;
+ u16 end_port;
+
+ /* vector of outside fibs */
+ nat_outside_fib_t * outside_fibs;
/* Vector of twice NAT addresses for extenal hosts */
snat_address_t * twice_nat_addresses;
u8 static_mapping_connection_tracking;
u8 deterministic;
u8 out2in_dpo;
+ u8 endpoint_dependent;
u32 translation_buckets;
u32 translation_memory_size;
u32 max_translations;
api_main_t * api_main;
} snat_main_t;
+typedef struct {
+ u32 thread_index;
+ f64 now;
+} nat44_is_idle_session_ctx_t;
+
extern snat_main_t snat_main;
extern vlib_node_registration_t snat_in2out_node;
extern vlib_node_registration_t snat_in2out_output_node;
extern vlib_node_registration_t snat_det_out2in_node;
extern vlib_node_registration_t snat_hairpin_dst_node;
extern vlib_node_registration_t snat_hairpin_src_node;
+extern vlib_node_registration_t nat44_ed_in2out_node;
+extern vlib_node_registration_t nat44_ed_in2out_output_node;
+extern vlib_node_registration_t nat44_ed_out2in_node;
+extern vlib_node_registration_t nat44_ed_hairpin_dst_node;
+extern vlib_node_registration_t nat44_ed_hairpin_src_node;
+extern vlib_node_registration_t nat44_ed_in2out_worker_handoff_node;
+extern vlib_node_registration_t nat44_ed_in2out_output_worker_handoff_node;
+extern vlib_node_registration_t nat44_ed_out2in_worker_handoff_node;
void snat_free_outside_address_and_port (snat_address_t * addresses,
u32 thread_index,
- snat_session_key_t * k,
- u32 address_index);
+ snat_session_key_t * k);
int snat_alloc_outside_address_and_port (snat_address_t * addresses,
u32 fib_index,
u8 by_external,
u8 *is_addr_only,
twice_nat_type_t *twice_nat,
- u8 *lb);
+ lb_nat_type_t *lb,
+ ip4_address_t * ext_host_addr);
void snat_add_del_addr_to_fib (ip4_address_t * addr,
u8 p_len,
*/
#define is_ed_session(s) (s->flags & SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT)
+/** \brief Check if NAT session has affinity record.
+ @param s NAT session
+ @return 1 if NAT session has affinity record
+*/
+#define is_affinity_sessions(s) (s->flags & SNAT_SESSION_FLAG_AFFINITY)
+
#define nat_interface_is_inside(i) i->flags & NAT_INTERFACE_FLAG_IS_INSIDE
#define nat_interface_is_outside(i) i->flags & NAT_INTERFACE_FLAG_IS_OUTSIDE
ip4_header_t *ip0, u8 *p_proto,
snat_session_key_t *p_value,
u8 *p_dont_translate, void *d, void *e);
+u32 icmp_match_in2out_ed(snat_main_t *sm, vlib_node_runtime_t *node,
+ u32 thread_index, vlib_buffer_t *b0,
+ ip4_header_t *ip0, u8 *p_proto,
+ snat_session_key_t *p_value,
+ u8 *p_dont_translate, void *d, void *e);
u32 icmp_match_out2in_fast(snat_main_t *sm, vlib_node_runtime_t *node,
u32 thread_index, vlib_buffer_t *b0,
ip4_header_t *ip0, u8 *p_proto,
ip4_header_t *ip0, u8 *p_proto,
snat_session_key_t *p_value,
u8 *p_dont_translate, void *d, void *e);
+u32 icmp_match_out2in_ed(snat_main_t *sm, vlib_node_runtime_t *node,
+ u32 thread_index, vlib_buffer_t *b0,
+ ip4_header_t *ip0, u8 *p_proto,
+ snat_session_key_t *p_value,
+ u8 *p_dont_translate, void *d, void *e);
void increment_v4_address(ip4_address_t * a);
-void snat_add_address(snat_main_t *sm, ip4_address_t *addr, u32 vrf_id,
- u8 twice_nat);
+int snat_add_address(snat_main_t *sm, ip4_address_t *addr, u32 vrf_id,
+ u8 twice_nat);
int snat_del_address(snat_main_t *sm, ip4_address_t addr, u8 delete_sm,
u8 twice_nat);
void nat44_add_del_address_dpo (ip4_address_t addr, u8 is_add);
u8 twice_nat);
uword unformat_snat_protocol(unformat_input_t * input, va_list * args);
u8 * format_snat_protocol(u8 * s, va_list * args);
+u8 * format_nat_addr_and_port_alloc_alg(u8 * s, va_list * args);
int nat44_add_del_lb_static_mapping (ip4_address_t e_addr, u16 e_port,
- snat_protocol_t proto, u32 vrf_id,
+ snat_protocol_t proto,
nat44_lb_addr_port_t *locals, u8 is_add,
twice_nat_type_t twice_nat, u8 out2in_only,
- u8 *tag);
+ u8 *tag, u32 affinity);
int nat44_del_session (snat_main_t *sm, ip4_address_t *addr, u16 port,
snat_protocol_t proto, u32 vrf_id, int is_in);
int nat44_del_ed_session (snat_main_t *sm, ip4_address_t *addr, u16 port,
u32 fib_index, u32 thread_index);
snat_session_t * nat_session_alloc_or_recycle (snat_main_t *sm, snat_user_t *u,
u32 thread_index);
+snat_session_t * nat_ed_session_alloc (snat_main_t *sm, snat_user_t *u,
+ u32 thread_index);
void nat_set_alloc_addr_and_port_mape (u16 psid, u16 psid_offset,
u16 psid_length);
+void nat_set_alloc_addr_and_port_range (u16 start_port, u16 end_port);
void nat_set_alloc_addr_and_port_default (void);
+int nat44_i2o_ed_is_idle_session_cb (clib_bihash_kv_16_8_t *kv, void *arg);
+int nat44_o2i_ed_is_idle_session_cb (clib_bihash_kv_16_8_t *kv, void *arg);
+int nat44_i2o_is_idle_session_cb (clib_bihash_kv_8_8_t *kv, void *arg);
+int nat44_o2i_is_idle_session_cb (clib_bihash_kv_8_8_t *kv, void *arg);
#endif /* __included_snat_h__ */