u32 arc_next_index;
} nat_pre_trace_t;
-/* session key (4-tuple) */
-typedef struct
-{
- union
- {
- struct
- {
- ip4_address_t addr;
- u16 port;
- u16 protocol:3, fib_index:13;
- };
- u64 as_u64;
- };
-} snat_session_key_t;
-
-/* deterministic session outside key */
-typedef struct
-{
- union
- {
- struct
- {
- ip4_address_t ext_host_addr;
- u16 ext_host_port;
- u16 out_port;
- };
- u64 as_u64;
- };
-} snat_det_out_key_t;
-
/* user (internal host) key */
typedef struct
{
#define foreach_nat_in2out_ed_error \
_(UNSUPPORTED_PROTOCOL, "unsupported protocol") \
-_(IN2OUT_PACKETS, "good in2out packets processed") \
_(OUT_OF_PORTS, "out of ports") \
_(BAD_ICMP_TYPE, "unsupported ICMP type") \
_(MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \
-_(MAX_USER_SESS_EXCEEDED, "max user sessions exceeded") \
-_(DROP_FRAGMENT, "drop fragment") \
-_(CANNOT_CREATE_USER, "cannot create NAT user") \
_(NON_SYN, "non-SYN packet try to create session") \
-_(TCP_PACKETS, "TCP packets") \
-_(TCP_CLOSED, "drops due to TCP in transitory timeout") \
-_(UDP_PACKETS, "UDP packets") \
-_(ICMP_PACKETS, "ICMP packets") \
-_(OTHER_PACKETS, "other protocol packets") \
-_(FRAGMENTS, "fragments") \
-_(CACHED_FRAGMENTS, "cached fragments") \
-_(PROCESSED_FRAGMENTS, "processed fragments")
+_(TCP_CLOSED, "drops due to TCP in transitory timeout")
typedef enum
{
#define foreach_nat_out2in_ed_error \
_(UNSUPPORTED_PROTOCOL, "unsupported protocol") \
-_(OUT2IN_PACKETS, "good out2in packets processed") \
_(OUT_OF_PORTS, "out of ports") \
_(BAD_ICMP_TYPE, "unsupported ICMP type") \
_(NO_TRANSLATION, "no translation") \
_(MAX_SESSIONS_EXCEEDED, "maximum sessions exceeded") \
_(MAX_USER_SESS_EXCEEDED, "max user sessions exceeded") \
-_(DROP_FRAGMENT, "drop fragment") \
_(CANNOT_CREATE_USER, "cannot create NAT user") \
_(NON_SYN, "non-SYN packet try to create session") \
-_(TCP_PACKETS, "TCP packets") \
-_(TCP_CLOSED, "drops due to TCP in transitory timeout") \
-_(UDP_PACKETS, "UDP packets") \
-_(ICMP_PACKETS, "ICMP packets") \
-_(OTHER_PACKETS, "other protocol packets") \
-_(FRAGMENTS, "fragments") \
-_(CACHED_FRAGMENTS, "cached fragments") \
-_(PROCESSED_FRAGMENTS, "processed fragments")
+_(TCP_CLOSED, "drops due to TCP in transitory timeout")
typedef enum
{
/* *INDENT-OFF* */
typedef CLIB_PACKED(struct
{
- /* Outside network key */
- snat_session_key_t out2in;
+ // number of sessions in this vrf
+ u32 ses_count;
- /* Inside network key */
- snat_session_key_t in2out;
+ u32 rx_fib_index;
+ u32 tx_fib_index;
+
+ // is this vrf expired
+ u8 expired;
+}) per_vrf_sessions_t;
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+typedef CLIB_PACKED(struct
+{
+ /* Outside network tuple */
+ struct
+ {
+ ip4_address_t addr;
+ u32 fib_index;
+ u16 port;
+ } out2in;
+
+ /* Inside network tuple */
+ struct
+ {
+ ip4_address_t addr;
+ u32 fib_index;
+ u16 port;
+ } in2out;
+
+ nat_protocol_t nat_proto;
/* Flags */
u32 flags;
/* user index */
u32 user_index;
+
+ /* per vrf sessions index */
+ u32 per_vrf_sessions_index;
+
}) snat_session_t;
/* *INDENT-ON* */
-
typedef struct
{
ip4_address_t addr;
typedef struct
{
u32 fib_index;
- u32 refcount;
-} nat_outside_fib_t;
+ u32 ref_count;
+} nat_fib_t;
typedef struct
{
- /* Inside network port */
- u16 in_port;
- /* Outside network address and port */
- snat_det_out_key_t out;
- /* Session state */
- u8 state;
- /* Expire timeout */
- u32 expire;
-} snat_det_session_t;
-
-typedef struct
-{
- /* inside IP address range */
- ip4_address_t in_addr;
- u8 in_plen;
- /* outside IP address range */
- ip4_address_t out_addr;
- u8 out_plen;
- /* inside IP addresses / outside IP addresses */
- u32 sharing_ratio;
- /* number of ports available to internal host */
- u16 ports_per_host;
- /* session counter */
- u32 ses_num;
- /* vector of sessions */
- snat_det_session_t *sessions;
-} snat_det_map_t;
+ u32 fib_index;
+ u32 refcount;
+} nat_outside_fib_t;
typedef struct
{
/* real thread index */
u32 thread_index;
+ per_vrf_sessions_t *per_vrf_sessions_vec;
+
} snat_main_per_thread_data_t;
struct snat_main_s;
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);
+ ip4_header_t * ip0,
+ ip4_address_t * addr,
+ u16 * port,
+ u32 * fib_index,
+ nat_protocol_t * proto,
+ void *d, void *e,
+ u8 * dont_translate);
/* Return worker thread index for given packet */
typedef u32 (snat_get_worker_in2out_function_t) (ip4_header_t * ip,
addresses,
u32 fib_index,
u32 thread_index,
- snat_session_key_t * k,
+ nat_protocol_t proto,
+ ip4_address_t * addr,
+ u16 * port,
u16 port_per_thread,
u32 snat_thread_index);
+#define foreach_nat_counter _ (tcp) _ (udp) _ (icmp) _ (other) _ (drops)
typedef struct snat_main_s
{
u16 start_port;
u16 end_port;
+ /* vector of fibs */
+ nat_fib_t *fibs;
+
/* vector of outside fibs */
nat_outside_fib_t *outside_fibs;
u32 out2in_fast_node_index;
u32 ed_out2in_node_index;
u32 ed_out2in_slowpath_node_index;
- u32 det_in2out_node_index;
- u32 det_out2in_node_index;
u32 hairpinning_node_index;
u32 hairpin_dst_node_index;
u32 ed_hairpin_dst_node_index;
u32 ed_hairpin_src_node_index;
-
- /* Deterministic NAT mappings */
- snat_det_map_t *det_maps;
-
/* If forwarding is enabled */
u8 forwarding_enabled;
/* Config parameters */
u8 static_mapping_only;
u8 static_mapping_connection_tracking;
- u8 deterministic;
u8 out2in_dpo;
u8 endpoint_dependent;
+ /* Is translation memory size calculated or user defined */
+ u8 translation_memory_size_set;
+
u32 translation_buckets;
uword translation_memory_size;
- u32 max_translations;
+ u32 max_translations_per_thread;
u32 *max_translations_per_fib;
-
+ u32 max_users_per_thread;
u32 user_buckets;
uword user_memory_size;
u32 max_translations_per_user;
/* counters/gauges */
vlib_simple_counter_main_t total_users;
vlib_simple_counter_main_t total_sessions;
+ vlib_simple_counter_main_t user_limit_reached;
+
+#define _(x) vlib_simple_counter_main_t x;
+ struct
+ {
+ struct
+ {
+ struct
+ {
+ foreach_nat_counter;
+ } in2out;
+
+ struct
+ {
+ foreach_nat_counter;
+ } out2in;
+
+ struct
+ {
+ foreach_nat_counter;
+ } in2out_ed;
+
+ struct
+ {
+ foreach_nat_counter;
+ } out2in_ed;
+ } fastpath;
+
+ struct
+ {
+ struct
+ {
+ foreach_nat_counter;
+ } in2out;
+
+ struct
+ {
+ foreach_nat_counter;
+ } out2in;
+
+ struct
+ {
+ foreach_nat_counter;
+ } in2out_ed;
+
+ struct
+ {
+ foreach_nat_counter;
+ } out2in_ed;
+ } slowpath;
+
+ vlib_simple_counter_main_t hairpinning;
+ } counters;
+#undef _
/* API message ID base */
u16 msg_id_base;
extern vlib_node_registration_t snat_in2out_worker_handoff_node;
extern vlib_node_registration_t snat_in2out_output_worker_handoff_node;
extern vlib_node_registration_t snat_out2in_worker_handoff_node;
-extern vlib_node_registration_t snat_det_in2out_node;
-extern vlib_node_registration_t snat_det_out2in_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;
format_function_t format_snat_static_mapping;
format_function_t format_snat_static_map_to_resolve;
format_function_t format_snat_session;
-format_function_t format_det_map_ses;
format_function_t format_snat_key;
format_function_t format_static_mapping_key;
format_function_t format_nat_protocol;
/* ICMP session match functions */
u32 icmp_match_in2out_fast (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);
+ ip4_header_t * ip0, ip4_address_t * addr,
+ u16 * port, u32 * fib_index,
+ nat_protocol_t * proto, void *d, void *e,
+ u8 * dont_translate);
u32 icmp_match_in2out_slow (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);
+ ip4_header_t * ip0, ip4_address_t * addr,
+ u16 * port, u32 * fib_index,
+ nat_protocol_t * proto, void *d, void *e,
+ u8 * dont_translate);
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,
- snat_session_key_t * p_value,
- u8 * p_dont_translate, void *d, void *e);
+ ip4_header_t * ip0, ip4_address_t * addr,
+ u16 * port, u32 * fib_index,
+ nat_protocol_t * proto, void *d, void *e,
+ u8 * dont_translate);
u32 icmp_match_out2in_slow (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);
-
-/* ICMP deterministic NAT session match functions */
-u32 icmp_match_out2in_det (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_in2out_det (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);
+ ip4_header_t * ip0, ip4_address_t * addr,
+ u16 * port, u32 * fib_index,
+ nat_protocol_t * proto, void *d, void *e,
+ u8 * dont_translate);
/* ICMP endpoint-dependent session match functions */
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);
+ ip4_header_t * ip0, ip4_address_t * addr,
+ u16 * port, u32 * fib_index, nat_protocol_t * proto,
+ void *d, void *e, u8 * dont_translate);
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);
+ ip4_header_t * ip0, ip4_address_t * addr,
+ u16 * port, u32 * fib_index, nat_protocol_t * proto,
+ void *d, void *e, u8 * dont_translate);
u32 icmp_in2out (snat_main_t * sm, vlib_buffer_t * b0, ip4_header_t * ip0,
icmp46_header_t * icmp0, u32 sw_if_index0, u32 rx_fib_index0,
*/
int nat44_set_session_limit (u32 session_limit, u32 vrf_id);
+/**
+ * @brief Update NAT44 session limit flushing all data (session limit, vrf id)
+ *
+ * @param session_limit Session limit
+ * @param vrf_id VRF id
+ * @return 0 on success, non-zero value otherwise
+ */
+int nat44_update_session_limit (u32 session_limit, u32 vrf_id);
/**
* @brief Free NAT44 ED session data (lookup keys, external address port)
*
*
* @param addresses vector of outside addresses
* @param thread_index thread index
- * @param k address, port and protocol
+ * @param key address, port and protocol
*/
-void snat_free_outside_address_and_port (snat_address_t * addresses,
- u32 thread_index,
- snat_session_key_t * k);
+void
+snat_free_outside_address_and_port (snat_address_t * addresses,
+ u32 thread_index,
+ ip4_address_t * addr,
+ u16 port, nat_protocol_t protocol);
/**
* @brief Alloc outside address and port
* @param addresses vector of outside addresses
* @param fib_index FIB table index
* @param thread_index thread index
- * @param k allocated address and port pair
* @param port_per_thread number of ports per thread
* @param snat_thread_index NAT thread index
*
int snat_alloc_outside_address_and_port (snat_address_t * addresses,
u32 fib_index,
u32 thread_index,
- snat_session_key_t * k,
+ nat_protocol_t proto,
+ ip4_address_t * addr,
+ u16 * port,
u16 port_per_thread,
u32 snat_thread_index);
+void expire_per_vrf_sessions (u32 fib_index);
+
/**
* @brief Match NAT44 static mapping.
*
- * @param match address and port to match
- * @param mapping external/local address and port of the matched 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
* @returns 0 if match found otherwise 1.
*/
int snat_static_mapping_match (snat_main_t * sm,
- snat_session_key_t match,
- snat_session_key_t * mapping,
+ ip4_address_t match_addr,
+ u16 match_port,
+ u32 match_fib_index,
+ nat_protocol_t match_protocol,
+ ip4_address_t * mapping_addr,
+ u16 * mapping_port,
+ u32 * mapping_fib_index,
u8 by_external,
u8 * is_addr_only,
twice_nat_type_t * twice_nat,
} tcp_udp_header_t;
u8 *format_user_kvp (u8 * s, va_list * args);
+
#endif /* __included_nat_h__ */
/*
* fd.io coding-style-patch-verification: ON
Code Review / vpp.git / blobdiff