ip4_address_t l_addr;
ip4_address_t r_addr;
u32 fib_index;
+ u16 l_port;
u8 proto;
- u8 rsvd[3];
+ u8 rsvd;
};
u64 as_u64[2];
};
-} snat_unk_proto_ses_key_t;
+} nat_ed_ses_key_t;
typedef struct {
union
};
} snat_user_key_t;
-typedef struct {
- union
- {
- struct
- {
- ip4_address_t addr;
- u16 port;
- u16 fib_index;
- };
- u64 as_u64;
- };
-} snat_worker_key_t;
-
#define foreach_snat_protocol \
_(UDP, 0, udp, "udp") \
#define SNAT_SESSION_FLAG_STATIC_MAPPING 1
#define SNAT_SESSION_FLAG_UNKNOWN_PROTO 2
+#define SNAT_SESSION_FLAG_LOAD_BALANCING 4
+
+#define NAT_INTERFACE_FLAG_IS_INSIDE 1
+#define NAT_INTERFACE_FLAG_IS_OUTSIDE 2
typedef CLIB_PACKED(struct {
snat_session_key_t out2in; /* 0-15 */
ip4_address_t addr;
u32 fib_index;
#define _(N, i, n, s) \
- u32 busy_##n##_ports; \
+ u16 busy_##n##_ports; \
+ u16 * busy_##n##_ports_per_thread; \
uword * busy_##n##_port_bitmap;
foreach_snat_protocol
#undef _
snat_det_session_t * sessions;
} snat_det_map_t;
+typedef struct {
+ ip4_address_t addr;
+ u16 port;
+ u8 probability;
+ u8 prefix;
+} nat44_lb_addr_port_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;
+ nat44_lb_addr_port_t *locals;
} snat_static_mapping_t;
typedef struct {
u32 sw_if_index;
- u8 is_inside;
+ u8 flags;
} snat_interface_t;
typedef struct {
} snat_static_map_resolve_t;
typedef struct {
+ /* Main lookup tables */
+ clib_bihash_8_8_t out2in;
+ clib_bihash_8_8_t in2out;
+
+ /* Find-a-user => src address lookup */
+ clib_bihash_8_8_t user_hash;
+
/* User pool */
snat_user_t * users;
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,
typedef u32 (snat_get_worker_function_t) (ip4_header_t * ip, u32 rx_fib_index);
typedef struct snat_main_s {
- /* Main lookup tables */
- clib_bihash_8_8_t out2in;
- clib_bihash_8_8_t in2out;
-
- /* Unknown protocol sessions lookup tables */
- clib_bihash_16_8_t out2in_unk_proto;
- clib_bihash_16_8_t in2out_unk_proto;
-
- /* Find-a-user => src address lookup */
- clib_bihash_8_8_t user_hash;
-
- /* Non-translated packets worker lookup => src address + VRF */
- clib_bihash_8_8_t worker_by_in;
-
- /* Translated packets worker lookup => IP address + port number */
- clib_bihash_8_8_t worker_by_out;
+ /* 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;
u8 deterministic;
u32 translation_buckets;
u32 translation_memory_size;
+ u32 max_translations;
u32 user_buckets;
u32 user_memory_size;
u32 max_translations_per_user;
extern vlib_node_registration_t snat_hairpin_src_node;
void snat_free_outside_address_and_port (snat_main_t * sm,
+ u32 thread_index,
snat_session_key_t * k,
u32 address_index);
*/
#define snat_is_unk_proto_session(s) s->flags & SNAT_SESSION_FLAG_UNKNOWN_PROTO
+#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
+
/*
* Why is this here? Because we don't need to touch this layer to
* simply reply to an icmp. We need to change id to a unique
} tcp_udp_header_t;
u32 icmp_match_in2out_fast(snat_main_t *sm, vlib_node_runtime_t *node,
- u32 thread_index, vlib_buffer_t *b0, u8 *p_proto,
+ 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_in2out_slow(snat_main_t *sm, vlib_node_runtime_t *node,
- u32 thread_index, vlib_buffer_t *b0, u8 *p_proto,
+ 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_in2out_det(snat_main_t *sm, vlib_node_runtime_t *node,
- u32 thread_index, vlib_buffer_t *b0, u8 *p_proto,
+ 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, u8 *p_proto,
+ 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_slow(snat_main_t *sm, vlib_node_runtime_t *node,
- u32 thread_index, vlib_buffer_t *b0, u8 *p_proto,
+ 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_det(snat_main_t *sm, vlib_node_runtime_t *node,
- u32 thread_index, vlib_buffer_t *b0, u8 *p_proto,
+ 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);
int snat_add_interface_address(snat_main_t *sm, u32 sw_if_index, int is_del);
uword unformat_snat_protocol(unformat_input_t * input, va_list * args);
u8 * format_snat_protocol(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,
+ nat44_lb_addr_port_t *locals, u8 is_add);
+int nat44_del_session (snat_main_t *sm, ip4_address_t *addr, u16 port,
+ snat_protocol_t proto, u32 vrf_id, int is_in);
static_always_inline u8
icmp_is_error_message (icmp46_header_t * icmp)
return 0;
}
+always_inline u8
+maximum_sessions_exceeded (snat_main_t *sm, u32 thread_index)
+{
+ if (pool_elts (sm->per_thread_data[thread_index].sessions) >= sm->max_translations)
+ return 1;
+
+ return 0;
+}
+
#endif /* __included_nat_h__ */