* limitations under the License.
*/
/**
- * @file NAT plugin global declarations
+ * @file nat.c
+ * NAT plugin global declarations
*/
#ifndef __included_nat_h__
#define __included_nat_h__
#include <vnet/ethernet/ethernet.h>
#include <vnet/ip/icmp46_packet.h>
#include <vnet/api_errno.h>
+#include <vnet/fib/fib_source.h>
+#include <vppinfra/elog.h>
#include <vppinfra/bihash_8_8.h>
#include <vppinfra/bihash_16_8.h>
#include <vppinfra/dlist.h>
#include <vppinfra/error.h>
#include <vlibapi/api.h>
#include <vlib/log.h>
+#include <vppinfra/bihash_16_8.h>
/* default session timeouts */
#define SNAT_UDP_TIMEOUT 300
/* NAT buffer flags */
#define SNAT_FLAG_HAIRPINNING (1 << 0)
+typedef enum
+{
+ NAT_NEXT_DROP,
+ NAT_NEXT_ICMP_ERROR,
+ NAT_NEXT_IN2OUT_PRE,
+ NAT_NEXT_OUT2IN_PRE,
+ NAT_NEXT_IN2OUT_ED_FAST_PATH,
+ NAT_NEXT_IN2OUT_ED_SLOW_PATH,
+ NAT_NEXT_IN2OUT_ED_OUTPUT_SLOW_PATH,
+ NAT_NEXT_OUT2IN_ED_FAST_PATH,
+ NAT_NEXT_OUT2IN_ED_SLOW_PATH,
+ NAT_N_NEXT,
+} nat_next_t;
+
+typedef struct
+{
+ u32 next_index;
+} nat_pre_trace_t;
+
/* session key (4-tuple) */
typedef struct
{
};
} snat_session_key_t;
-/* endpoint-dependent session key (6-tuple) */
-typedef struct
-{
- union
- {
- struct
- {
- ip4_address_t l_addr;
- ip4_address_t r_addr;
- u32 proto:8, fib_index:24;
- u16 l_port;
- u16 r_port;
- };
- u64 as_u64[2];
- };
-} nat_ed_ses_key_t;
-
/* deterministic session outside key */
typedef struct
{
};
} snat_user_key_t;
-typedef struct
+/* NAT API Configuration flags */
+#define foreach_nat_config_flag \
+ _(0x01, IS_TWICE_NAT) \
+ _(0x02, IS_SELF_TWICE_NAT) \
+ _(0x04, IS_OUT2IN_ONLY) \
+ _(0x08, IS_ADDR_ONLY) \
+ _(0x10, IS_OUTSIDE) \
+ _(0x20, IS_INSIDE) \
+ _(0x40, IS_STATIC) \
+ _(0x80, IS_EXT_HOST_VALID) \
+
+typedef enum nat_config_flags_t_
{
- u32 sw_if_index;
- u32 next_index;
- u8 cached;
-} nat44_reass_trace_t;
+#define _(n,f) NAT_API_##f = n,
+ foreach_nat_config_flag
+#undef _
+} nat_config_flags_t;
/* External address and port allocation modes */
#define foreach_nat_addr_and_port_alloc_alg \
#undef _
} snat_session_state_t;
+#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")
+
+typedef enum
+{
+#define _(sym,str) NAT_IN2OUT_ED_ERROR_##sym,
+ foreach_nat_in2out_ed_error
+#undef _
+ NAT_IN2OUT_ED_N_ERROR,
+} nat_in2out_ed_error_t;
+
+#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")
+
+typedef enum
+{
+#define _(sym,str) NAT_OUT2IN_ED_ERROR_##sym,
+ foreach_nat_out2in_ed_error
+#undef _
+ NAT_OUT2IN_ED_N_ERROR,
+} nat_out2in_ed_error_t;
+
+
/* Endpoint dependent TCP session state */
#define NAT44_SES_I2O_FIN 1
#define NAT44_SES_O2I_FIN 2
#define NAT44_SES_O2I_FIN_ACK 8
#define NAT44_SES_I2O_SYN 16
#define NAT44_SES_O2I_SYN 32
+#define NAT44_SES_RST 64
/* Session flags */
#define SNAT_SESSION_FLAG_STATIC_MAPPING 1
#define SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT 16
#define SNAT_SESSION_FLAG_FWD_BYPASS 32
#define SNAT_SESSION_FLAG_AFFINITY 64
+#define SNAT_SESSION_FLAG_OUTPUT_FEATURE 128
/* 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
+
/* *INDENT-OFF* */
typedef CLIB_PACKED(struct
{
u32 per_user_index;
u32 per_user_list_head_index;
+ /* index in global LRU list */
+ u32 global_lru_index;
+ f64 last_lru_update;
+
/* Last heard timer */
f64 last_heard;
+ /* Last HA refresh */
+ f64 ha_last_refreshed;
+
/* Counters */
u64 total_bytes;
u32 total_pkts;
u8 state;
u32 i2o_fin_seq;
u32 o2i_fin_seq;
+ u32 tcp_close_timestamp;
+
+ /* user index */
+ u32 user_index;
}) snat_session_t;
/* *INDENT-ON* */
#define _(N, i, n, s) \
u16 busy_##n##_ports; \
u16 * busy_##n##_ports_per_thread; \
- uword * busy_##n##_port_bitmap;
+ u32 busy_##n##_port_refcounts[65535];
foreach_snat_protocol
#undef _
/* *INDENT-ON* */
u16 local_port;
/* external port */
u16 external_port;
- /* 1 = 1:1NAT, 0 = 1:1NAPT */
- u8 addr_only;
/* is twice-nat */
twice_nat_type_t twice_nat;
- /* 1 = rule match only out2in direction */
- u8 out2in_only;
/* local FIB table */
u32 vrf_id;
u32 fib_index;
nat44_lb_addr_port_t *locals;
/* affinity per service lis */
u32 affinity_per_service_list_head_index;
+ /* flags */
+ u32 flags;
} snat_static_mapping_t;
typedef struct
u32 sw_if_index;
u32 vrf_id;
snat_protocol_t proto;
+ u32 flags;
int addr_only;
int twice_nat;
int is_add;
+ int out2in_only;
+ int identity_nat;
u8 *tag;
} snat_static_map_resolve_t;
/* Pool of doubly-linked list elements */
dlist_elt_t *list_pool;
+ /* LRU session list - head is stale, tail is fresh */
+ dlist_elt_t *global_lru_pool;
+ u32 global_lru_head_index;
+
/* NAT thread index */
u32 snat_thread_index;
+
+ /* real thread index */
+ u32 thread_index;
+
+ // per thread data structures
+ vlib_main_t *vlib_main;
+
} snat_main_per_thread_data_t;
struct snat_main_s;
void *e);
/* Return worker thread index for given packet */
-typedef u32 (snat_get_worker_function_t) (ip4_header_t * ip,
- u32 rx_fib_index);
+typedef u32 (snat_get_worker_in2out_function_t) (ip4_header_t * ip,
+ u32 rx_fib_index,
+ u8 is_output);
+
+typedef u32 (snat_get_worker_out2in_function_t) (vlib_buffer_t * b,
+ ip4_header_t * ip,
+ u32 rx_fib_index,
+ u8 is_output);
-/* NAT address and port allacotaion function */
+/* NAT address and port allocation function */
typedef int (nat_alloc_out_addr_and_port_function_t) (snat_address_t *
addresses,
u32 fib_index,
u16 port_per_thread,
u32 snat_thread_index);
+
typedef struct snat_main_s
{
/* ICMP session match functions */
u32 num_workers;
u32 first_worker_index;
u32 *workers;
- snat_get_worker_function_t *worker_in2out_cb;
- snat_get_worker_function_t *worker_out2in_cb;
+ snat_get_worker_in2out_function_t *worker_in2out_cb;
+ snat_get_worker_out2in_function_t *worker_out2in_cb;
u16 port_per_thread;
u32 num_snat_thread;
/* vector of outside fibs */
nat_outside_fib_t *outside_fibs;
- /* Vector of twice NAT addresses for extenal hosts */
+ /* Vector of twice NAT addresses for external hosts */
snat_address_t *twice_nat_addresses;
/* sw_if_indices whose intfc addresses should be auto-added */
u32 fq_in2out_output_index;
u32 fq_out2in_index;
- /* in2out and out2in node index */
+ /* node indexes */
+ u32 error_node_index;
+
+ /* handoff fq nodes */
+ u32 handoff_out2in_index;
+ u32 handoff_in2out_index;
+ u32 handoff_in2out_output_index;
+
+ /* respect feature arc nodes */
+ u32 pre_out2in_node_index;
+ u32 pre_in2out_node_index;
+
u32 in2out_node_index;
u32 in2out_output_node_index;
+ u32 in2out_fast_node_index;
+ u32 in2out_slowpath_node_index;
+ u32 in2out_slowpath_output_node_index;
+ u32 ed_in2out_node_index;
+ u32 ed_in2out_slowpath_node_index;
u32 out2in_node_index;
- u32 error_node_index;
+ 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 hairpin_src_node_index;
+ u32 ed_hairpinning_node_index;
+ u32 ed_hairpin_dst_node_index;
+ u32 ed_hairpin_src_node_index;
+
/* Deterministic NAT mappings */
snat_det_map_t *det_maps;
u8 deterministic;
u8 out2in_dpo;
u8 endpoint_dependent;
+
u32 translation_buckets;
- u32 translation_memory_size;
+ uword translation_memory_size;
u32 max_translations;
+ u32 *max_translations_per_fib;
+
u32 user_buckets;
- u32 user_memory_size;
+ uword user_memory_size;
u32 max_translations_per_user;
+
u32 outside_vrf_id;
u32 outside_fib_index;
u32 inside_vrf_id;
u32 inside_fib_index;
/* values of various timeouts */
+ // proto timeouts
u32 udp_timeout;
- u32 tcp_established_timeout;
u32 tcp_transitory_timeout;
+ u32 tcp_established_timeout;
u32 icmp_timeout;
/* TCP MSS clamping */
u16 mss_clamping;
u16 mss_value_net;
+ /* counters/gauges */
+ vlib_simple_counter_main_t total_users;
+ vlib_simple_counter_main_t total_sessions;
+
/* API message ID base */
u16 msg_id_base;
/* log class */
vlib_log_class_t log_class;
+ /* logging level */
+ u8 log_level;
/* convenience */
- vlib_main_t *vlib_main;
vnet_main_t *vnet_main;
ip4_main_t *ip4_main;
ip_lookup_main_t *ip4_lookup_main;
} snat_runtime_t;
extern snat_main_t snat_main;
+
+// nat pre ed next_node feature classification
+extern vlib_node_registration_t nat_default_node;
+extern vlib_node_registration_t nat_pre_in2out_node;
+extern vlib_node_registration_t nat_pre_out2in_node;
+
extern vlib_node_registration_t snat_in2out_node;
extern vlib_node_registration_t snat_in2out_output_node;
extern vlib_node_registration_t snat_out2in_node;
-extern vlib_node_registration_t snat_in2out_fast_node;
-extern vlib_node_registration_t snat_out2in_fast_node;
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 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;
+
+extern fib_source_t nat_fib_src_hi;
+extern fib_source_t nat_fib_src_low;
/* format functions */
format_function_t format_snat_user;
format_function_t format_static_mapping_key;
format_function_t format_snat_protocol;
format_function_t format_nat_addr_and_port_alloc_alg;
-format_function_t format_nat44_reass_trace;
/* unformat functions */
unformat_function_t unformat_snat_protocol;
#define is_affinity_sessions(s) (s->flags & SNAT_SESSION_FLAG_AFFINITY)
/** \brief Check if NAT interface is inside.
- @param i NAT interfce
+ @param i NAT interface
@return 1 if inside interface
*/
#define nat_interface_is_inside(i) i->flags & NAT_INTERFACE_FLAG_IS_INSIDE
/** \brief Check if NAT interface is outside.
- @param i NAT interfce
+ @param i NAT interface
@return 1 if outside interface
*/
#define nat_interface_is_outside(i) i->flags & NAT_INTERFACE_FLAG_IS_OUTSIDE
*/
#define nat44_is_ses_closed(s) s->state == 0xf
+/** \brief Check if NAT static mapping is address only (1:1NAT).
+ @param sm NAT static mapping
+ @return 1 if 1:1NAT, 0 if 1:1NAPT
+*/
+#define is_addr_only_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_ADDR_ONLY)
+
+/** \brief Check if NAT static mapping match only out2in direction.
+ @param sm NAT static mapping
+ @return 1 if rule match only out2in direction
+*/
+#define is_out2in_only_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_OUT2IN_ONLY)
+
+/** \brief Check if NAT static mapping is identity NAT.
+ @param sm NAT static mapping
+ @return 1 if identity NAT
+*/
+#define is_identity_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_IDENTITY_NAT)
+
+/** \brief Check if NAT static mapping is load-balancing.
+ @param sm NAT static mapping
+ @return 1 if load-balancing
+*/
+#define is_lb_static_mapping(sm) (sm->flags & NAT_STATIC_MAPPING_FLAG_LB)
+
+/** \brief Check if client initiating TCP connection (received SYN from client)
+ @param t TCP header
+ @return 1 if client initiating TCP connection
+*/
+always_inline bool
+tcp_flags_is_init (u8 f)
+{
+ return (f & TCP_FLAG_SYN) && !(f & TCP_FLAG_ACK);
+}
+
/* logging */
#define nat_log_err(...) \
vlib_log(VLIB_LOG_LEVEL_ERR, snat_main.log_class, __VA_ARGS__)
#define nat_log_debug(...)\
vlib_log(VLIB_LOG_LEVEL_DEBUG, snat_main.log_class, __VA_ARGS__)
+/* NAT API Logging Levels */
+#define foreach_nat_log_level \
+ _(0x00, LOG_NONE) \
+ _(0x01, LOG_ERROR) \
+ _(0x02, LOG_WARNING) \
+ _(0x03, LOG_NOTICE) \
+ _(0x04, LOG_INFO) \
+ _(0x05, LOG_DEBUG)
+
+typedef enum nat_log_level_t_
+{
+#define _(n,f) SNAT_##f = n,
+ foreach_nat_log_level
+#undef _
+} nat_log_level_t;
+
+#define nat_elog(_level, _str) \
+do \
+ { \
+ snat_main_t *sm = &snat_main; \
+ if (PREDICT_FALSE (sm->log_level >= _level)) \
+ { \
+ ELOG_TYPE_DECLARE (e) = \
+ { \
+ .format = "nat-msg " _str, \
+ .format_args = "", \
+ }; \
+ ELOG_DATA (&vlib_global_main.elog_main, e); \
+ } \
+ } while (0);
+
+#define nat_elog_addr(_level, _str, _addr) \
+do \
+ { \
+ if (PREDICT_FALSE (sm->log_level >= _level)) \
+ { \
+ ELOG_TYPE_DECLARE (e) = \
+ { \
+ .format = "nat-msg " _str " %d.%d.%d.%d", \
+ .format_args = "i1i1i1i1", \
+ }; \
+ CLIB_PACKED(struct \
+ { \
+ u8 oct1; \
+ u8 oct2; \
+ u8 oct3; \
+ u8 oct4; \
+ }) *ed; \
+ ed = ELOG_DATA (&vlib_global_main.elog_main, e); \
+ ed->oct4 = _addr >> 24; \
+ ed->oct3 = _addr >> 16; \
+ ed->oct2 = _addr >> 8; \
+ ed->oct1 = _addr; \
+ } \
+ } while (0);
+
+#define nat_elog_debug_handoff(_str, _tid, _fib, _src, _dst) \
+do \
+ { \
+ if (PREDICT_FALSE (sm->log_level >= SNAT_LOG_DEBUG)) \
+ { \
+ ELOG_TYPE_DECLARE (e) = \
+ { \
+ .format = "nat-msg " _str " ip src: %d.%d.%d.%d dst: %d.%d.%d.%d" \
+ " tid from: %d to: %d fib: %d", \
+ .format_args = "i1i1i1i1i1i1i1i1i4i4i4", \
+ }; \
+ CLIB_PACKED(struct \
+ { \
+ u8 src_oct1; \
+ u8 src_oct2; \
+ u8 src_oct3; \
+ u8 src_oct4; \
+ u8 dst_oct1; \
+ u8 dst_oct2; \
+ u8 dst_oct3; \
+ u8 dst_oct4; \
+ u32 ftid; \
+ u32 ttid; \
+ u32 fib; \
+ }) *ed; \
+ ed = ELOG_DATA (&vlib_global_main.elog_main, e); \
+ ed->src_oct1 = _src >> 24; \
+ ed->src_oct2 = _src >> 16; \
+ ed->src_oct3 = _src >> 8; \
+ ed->src_oct4 = _src; \
+ ed->dst_oct1 = _dst >> 24; \
+ ed->dst_oct2 = _dst >> 16; \
+ ed->dst_oct3 = _dst >> 8; \
+ ed->dst_oct4 = _dst; \
+ ed->ftid = vlib_get_thread_index (); \
+ ed->ttid = _tid; \
+ ed->fib = _fib; \
+ } \
+ } while (0);
+
+#define nat_elog_debug_handoff_v2(_str, _prt, _fib, _src, _dst) \
+do \
+ { \
+ if (PREDICT_FALSE (sm->log_level >= SNAT_LOG_DEBUG)) \
+ { \
+ ELOG_TYPE_DECLARE (e) = \
+ { \
+ .format = "nat-msg " _str " ip_src:%d.%d.%d.%d ip_dst:%d.%d.%d.%d" \
+ " tid:%d prt:%d fib:%d", \
+ .format_args = "i1i1i1i1i1i1i1i1i4i4i4", \
+ }; \
+ CLIB_PACKED(struct \
+ { \
+ u8 src_oct1; \
+ u8 src_oct2; \
+ u8 src_oct3; \
+ u8 src_oct4; \
+ u8 dst_oct1; \
+ u8 dst_oct2; \
+ u8 dst_oct3; \
+ u8 dst_oct4; \
+ u32 tid; \
+ u32 prt; \
+ u32 fib; \
+ }) *ed; \
+ ed = ELOG_DATA (&vlib_global_main.elog_main, e); \
+ ed->src_oct1 = _src >> 24; \
+ ed->src_oct2 = _src >> 16; \
+ ed->src_oct3 = _src >> 8; \
+ ed->src_oct4 = _src; \
+ ed->dst_oct1 = _dst >> 24; \
+ ed->dst_oct2 = _dst >> 16; \
+ ed->dst_oct3 = _dst >> 8; \
+ ed->dst_oct4 = _dst; \
+ ed->tid = vlib_get_thread_index (); \
+ ed->prt = _prt; \
+ ed->fib = _fib; \
+ } \
+ } while (0);
+
+#define nat_elog_X1(_level, _fmt, _arg, _val1) \
+do \
+ { \
+ snat_main_t *sm = &snat_main; \
+ if (PREDICT_FALSE (sm->log_level >= _level)) \
+ { \
+ ELOG_TYPE_DECLARE (e) = \
+ { \
+ .format = "nat-msg " _fmt, \
+ .format_args = _arg, \
+ }; \
+ CLIB_PACKED(struct \
+ { \
+ typeof (_val1) val1; \
+ }) *ed; \
+ ed = ELOG_DATA (&vlib_global_main.elog_main, e); \
+ ed->val1 = _val1; \
+ } \
+ } while (0);
+
+#define nat_elog_notice(nat_elog_str) \
+ nat_elog(SNAT_LOG_INFO, "[notice] " nat_elog_str)
+#define nat_elog_warn(nat_elog_str) \
+ nat_elog(SNAT_LOG_WARNING, "[warning] " nat_elog_str)
+#define nat_elog_err(nat_elog_str) \
+ nat_elog(SNAT_LOG_ERROR, "[error] " nat_elog_str)
+#define nat_elog_debug(nat_elog_str) \
+ nat_elog(SNAT_LOG_DEBUG, "[debug] " nat_elog_str)
+#define nat_elog_info(nat_elog_str) \
+ nat_elog(SNAT_LOG_INFO, "[info] " nat_elog_str)
+
+#define nat_elog_notice_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) \
+ nat_elog_X1(SNAT_LOG_NOTICE, "[notice] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)
+#define nat_elog_warn_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) \
+ nat_elog_X1(SNAT_LOG_WARNING, "[warning] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)
+#define nat_elog_err_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) \
+ nat_elog_X1(SNAT_LOG_ERROR, "[error] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)
+#define nat_elog_debug_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) \
+ nat_elog_X1(SNAT_LOG_DEBUG, "[debug] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)
+#define nat_elog_info_X1(nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1) \
+ nat_elog_X1(SNAT_LOG_INFO, "[info] " nat_elog_fmt_str, nat_elog_fmt_arg, nat_elog_val1)
+
/* 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,
int snat_hairpinning (snat_main_t * sm, vlib_buffer_t * b0,
ip4_header_t * ip0, udp_header_t * udp0,
tcp_header_t * tcp0, u32 proto0, int is_ed);
-void nat44_reass_hairpinning (snat_main_t * sm, vlib_buffer_t * b0,
- ip4_header_t * ip0, u16 sport, u16 dport,
- u32 proto0, int is_ed);
/* Call back functions for clib_bihash_add_or_overwrite_stale */
int nat44_i2o_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);
-/**
- * @brief Increment IPv4 address
- */
-void increment_v4_address (ip4_address_t * a);
-
/**
* @brief Add external address to NAT44 pool
*
+ * @param sm snat global configuration data
* @param addr IPv4 address
* @param vrf_id VRF id of tenant, ~0 means independent of VRF
* @param twice_nat 1 if twice NAT address
/**
* @brief Delete external address from NAT44 pool
*
+ * @param sm snat global configuration data
* @param addr IPv4 address
* @param delete_sm 1 if delete static mapping using address
* @param twice_nat 1 if twice NAT address
/**
* @brief Add/delete NAT44 static mapping
*
- * @param l_addr local IPv4 address
- * @param e_addr external IPv4 address
- * @param l_port local port number
- * @param e_port external port number
- * @param vrf_id local VRF ID
- * @param addr_only 1 = 1:1NAT, 0 = 1:1NAPT
- * @param sw_if_index use interface address as external IPv4 address
- * @param proto L4 protocol
- * @param is_add 1 = add, 0 = delete
- * @param twice_nat twice-nat mode
- * @param out2in_only if 1 rule match only out2in direction
- * @param tagi opaque string tag
+ * @param l_addr local IPv4 address
+ * @param e_addr external IPv4 address
+ * @param l_port local port number
+ * @param e_port external port number
+ * @param vrf_id local VRF ID
+ * @param addr_only 1 = 1:1NAT, 0 = 1:1NAPT
+ * @param sw_if_index use interface address as external IPv4 address
+ * @param proto L4 protocol
+ * @param is_add 1 = add, 0 = delete
+ * @param twice_nat twice-nat mode
+ * @param out2in_only if 1 rule match only out2in direction
+ * @param tag opaque string tag
+ * @param identity_nat identity NAT
*
* @return 0 on success, non-zero value otherwise
*/
int addr_only, u32 sw_if_index,
snat_protocol_t proto, int is_add,
twice_nat_type_t twice_nat, u8 out2in_only,
- u8 * tag);
+ u8 * tag, u8 identity_nat);
/**
* @brief Add/delete static mapping with load-balancing (multiple backends)
twice_nat_type_t twice_nat,
u8 out2in_only, u8 * tag, u32 affinity);
+int nat44_lb_static_mapping_add_del_local (ip4_address_t e_addr, u16 e_port,
+ ip4_address_t l_addr, u16 l_port,
+ snat_protocol_t proto, u32 vrf_id,
+ u8 probability, u8 is_add);
+
clib_error_t *snat_api_init (vlib_main_t * vm, snat_main_t * sm);
/**
int is_del);
/**
- * @brief Add/delete NAT44 pool address from specific interfce
+ * @brief Add/delete NAT44 pool address from specific interface
*
* @param sw_if_index software index of the interface
* @param is_del 1 = delete, 0 = add
- * @param twice_nat 1 = twice NAT address for extenal hosts
+ * @param twice_nat 1 = twice NAT address for external hosts
*
* @return 0 on success, non-zero value otherwise
*/
* @param port L4 port number
* @param proto L4 protocol
* @param vrf_id VRF ID
- * @param is_in 1 = inside network addres and por pair, 0 = outside
+ * @param is_in 1 = inside network address and port pair, 0 = outside
*
* @return 0 on success, non-zero value otherwise
*/
/**
* @brief Delete NAT44 endpoint-dependent session
*
+ * @param sm snat global configuration data
* @param addr IPv4 address
* @param port L4 port number
* @param proto L4 protocol
* @param vrf_id VRF ID
- * @param is_in 1 = inside network addres and por pair, 0 = outside
+ * @param is_in 1 = inside network address and port pair, 0 = outside
*
* @return 0 on success, non-zero value otherwise
*/
u32 vrf_id, int is_in);
/**
- * @brief Free NAT44 session data (lookup keys, external addrres port)
+ * @brief Free NAT44 session data (lookup keys, external address port)
*
+ * @param sm snat global configuration data
* @param s NAT session
* @param thread_index thread index
+ * @param is_ha is HA event
*/
void nat_free_session_data (snat_main_t * sm, snat_session_t * s,
- u32 thread_index);
+ u32 thread_index, u8 is_ha);
+
+/**
+<<<<<<< bdfe5955f59a735fd8d70e9026f8c1867a4c8cc6
+ * @brief Set NAT44 session limit (session limit, vrf id)
+ *
+ * @param session_limit Session limit
+ * @param vrf_id VRF id
+ * @return 0 on success, non-zero value otherwise
+ */
+int nat44_set_session_limit (u32 session_limit, u32 vrf_id);
+
+/**
+ * @brief Free NAT44 ED session data (lookup keys, external addrres port)
+=======
+ * @brief Free NAT44 ED session data (lookup keys, external address port)
+>>>>>>> docs: clean up make docs job
+ *
+ * @param s NAT session
+ * @param thread_index thread index
+ * @param is_ha is HA event
+ */
+void
+nat44_free_session_data (snat_main_t * sm, snat_session_t * s,
+ u32 thread_index, u8 is_ha);
+
+/**
+ * @brief Initialize NAT44 data
+ *
+ * @param tsm per thread data
+ */
+void nat44_db_init (snat_main_per_thread_data_t * tsm);
+
+/**
+ * @brief Free NAT44 data
+ *
+ * @param tsm per thread data
+ */
+void nat44_db_free (snat_main_per_thread_data_t * tsm);
/**
* @brief Find or create NAT user
*
+ * @param sm snat global configuration data
* @param addr IPv4 address
* @param fib_index FIB table index
* @param thread_index thread index
*
* @return NAT user data structure on success otherwise zero value
*/
-snat_user_t *nat_user_get_or_create (snat_main_t * sm, ip4_address_t * addr,
- u32 fib_index, u32 thread_index);
+snat_user_t *nat_user_get_or_create (snat_main_t * sm,
+ ip4_address_t * addr, u32 fib_index,
+ u32 thread_index);
/**
* @brief Allocate new NAT session or recycle last used
*
+ * @param sm snat global configuration data
* @param u NAT user
* @param thread_index thread index
+ * @param now time now
*
* @return session data structure on success otherwise zero value
*/
snat_session_t *nat_session_alloc_or_recycle (snat_main_t * sm,
snat_user_t * u,
- u32 thread_index);
+ u32 thread_index, f64 now);
/**
* @brief Allocate NAT endpoint-dependent session
*
- * @param u NAT user
+ * @param sm snat global configuration data
* @param thread_index thread index
+ * @param now time now
*
* @return session data structure on success otherwise zero value
*/
-snat_session_t *nat_ed_session_alloc (snat_main_t * sm, snat_user_t * u,
- u32 thread_index);
+snat_session_t *nat_ed_session_alloc (snat_main_t * sm, u32 thread_index,
+ f64 now);
/**
* @brief Set address and port assignment algorithm for MAP-E CE
*
* @param addresses vector of outside addresses
* @param thread_index thread index
- * @param k adddress, port and protocol
+ * @param k address, port and protocol
*/
void snat_free_outside_address_and_port (snat_address_t * addresses,
u32 thread_index,
* @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 threead
+ * @param port_per_thread number of ports per thread
* @param snat_thread_index NAT thread index
*
* @return 0 on success, non-zero value otherwise
u8 * is_addr_only,
twice_nat_type_t * twice_nat,
lb_nat_type_t * lb,
- ip4_address_t * ext_host_addr);
+ ip4_address_t * ext_host_addr,
+ u8 * is_identity_nat);
/**
* @brief Add/del NAT address to FIB.
void snat_add_del_addr_to_fib (ip4_address_t * addr,
u8 p_len, u32 sw_if_index, int is_add);
-
/*
* 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
u16 src_port, dst_port;
} tcp_udp_header_t;
-#endif /* __included_nat_h__ */
+int nat_global_lru_free_one (snat_main_t * sm, int thread_index, f64 now);
+#endif /* __included_nat_h__ */
/*
* fd.io coding-style-patch-verification: ON
*