};
} 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_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 */
/* Outside address */
u32 outside_address_index; /* 64-67 */
- /* External host address */
+ /* External host address and port */
ip4_address_t ext_host_addr; /* 68-71 */
-
+ u16 ext_host_port; /* 72-73 */
}) snat_session_t;
typedef struct {
u32 sw_if_index;
- u8 is_inside;
+ u8 flags;
} snat_interface_t;
typedef struct {
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,
clib_bihash_16_8_t out2in_ed;
clib_bihash_16_8_t in2out_ed;
- /* Non-translated packets worker lookup => src address + VRF */
- clib_bihash_8_8_t worker_by_in;
-
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_dst_node;
extern vlib_node_registration_t snat_hairpin_src_node;
-void snat_free_outside_address_and_port (snat_main_t * sm,
+void snat_free_outside_address_and_port (snat_address_t * addresses,
u32 thread_index,
snat_session_key_t * k,
u32 address_index);
-int snat_alloc_outside_address_and_port (snat_main_t * sm,
+int snat_alloc_outside_address_and_port (snat_address_t * addresses,
u32 fib_index,
u32 thread_index,
snat_session_key_t * k,
- u32 * address_indexp);
+ u32 * address_indexp,
+ u8 vrf_mode,
+ u16 port_per_thread,
+ u32 snat_thread_index);
int snat_static_mapping_match (snat_main_t * sm,
snat_session_key_t match,
@param s SNAT session
@return 1 if SNAT session is created from static mapping otherwise 0
*/
-#define snat_is_session_static(s) s->flags & SNAT_SESSION_FLAG_STATIC_MAPPING
+#define snat_is_session_static(s) (s->flags & SNAT_SESSION_FLAG_STATIC_MAPPING)
/** \brief Check if SNAT session for unknown protocol.
@param s SNAT session
*/
#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 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;
}
-#endif /* __included_nat_h__ */
+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;
+}
+
+static_always_inline void
+nat_send_all_to_node(vlib_main_t *vm, u32 *bi_vector,
+ vlib_node_runtime_t *node, vlib_error_t *error, u32 next)
+{
+ u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
+
+ from = bi_vector;
+ n_left_from = vec_len(bi_vector);
+ next_index = node->cached_next_index;
+ while (n_left_from > 0) {
+ vlib_get_next_frame(vm, node, next_index, to_next, n_left_to_next);
+ while (n_left_from > 0 && n_left_to_next > 0) {
+ u32 bi0 = to_next[0] = from[0];
+ from += 1;
+ n_left_from -= 1;
+ to_next += 1;
+ n_left_to_next -= 1;
+ vlib_buffer_t *p0 = vlib_get_buffer(vm, bi0);
+ p0->error = *error;
+ vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next,
+ n_left_to_next, bi0, next);
+ }
+ vlib_put_next_frame(vm, node, next_index, n_left_to_next);
+ }
+}
+
+#endif /* __included_snat_h__ */
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