36 #define _(sym,string) string, 59 "NAT44_OUT2IN_ED_FAST_PATH";
61 s =
format (s,
"%s: sw_if_index %d, next index %d, session %d", tag,
70 u32 sw_if_index0,
u32 rx_fib_index0,
72 u32 thread_index, snat_session_t ** p_s0)
74 next0 =
icmp_out2in (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
75 next0, thread_index, p_s0, 0);
76 snat_session_t *s0 = *p_s0;
89 #ifndef CLIB_MARCH_VARIANT 96 u64 sess_timeout_time;
107 if (ctx->
now >= sess_timeout_time)
109 ed_key.
l_addr = s->in2out.addr;
110 ed_key.
r_addr = s->ext_host_addr;
114 ed_key.
proto = s->in2out.port;
121 ed_key.
l_port = s->in2out.port;
122 ed_key.
r_port = s->ext_host_port;
126 ed_key.
r_addr = s->ext_host_nat_addr;
127 ed_key.
r_port = s->ext_host_nat_port;
131 if (clib_bihash_add_del_16_8 (&tsm->
in2out_ed, &ed_kv, 0))
138 s->in2out.addr.as_u32,
139 s->out2in.addr.as_u32,
143 s->in2out.fib_index);
146 &s->in2out.addr, s->in2out.port,
147 &s->ext_host_nat_addr, s->ext_host_nat_port,
148 &s->out2in.addr, s->out2in.port,
149 &s->ext_host_addr, s->ext_host_port,
152 nat_ha_sdel (&s->out2in.addr, s->out2in.port, &s->ext_host_addr,
153 s->ext_host_port, s->out2in.protocol, s->out2in.fib_index,
161 key.
port = s->ext_host_nat_port;
163 if (a->
addr.
as_u32 == s->ext_host_nat_addr.as_u32)
187 static snat_session_t *
210 b->
error = node->
errors[NAT_OUT2IN_ED_ERROR_MAX_SESSIONS_EXCEEDED];
234 s->ext_host_port = e_key.
protocol == SNAT_PROTOCOL_ICMP ? 0 : udp->
src_port;
243 s->in2out.
protocol = s->out2in.protocol;
252 if (clib_bihash_add_or_overwrite_stale_16_8 (&tsm->
out2in_ed, &kv,
262 thread_index, &eh_key,
266 b->
error = node->
errors[NAT_OUT2IN_ED_ERROR_OUT_OF_PORTS];
268 if (clib_bihash_add_del_16_8 (&tsm->
out2in_ed, &kv, 0))
272 s->ext_host_nat_addr.as_u32 = eh_key.
addr.
as_u32;
273 s->ext_host_nat_port = eh_key.
port;
284 if (clib_bihash_add_or_overwrite_stale_16_8 (&tsm->
in2out_ed, &kv,
290 s->in2out.addr.as_u32,
291 s->out2in.addr.as_u32,
294 s->out2in.port, s->in2out.fib_index);
297 &s->in2out.addr, s->in2out.port,
298 &s->ext_host_nat_addr, s->ext_host_nat_port,
299 &s->out2in.addr, s->out2in.port,
300 &s->ext_host_addr, s->ext_host_port,
303 nat_ha_sadd (&s->in2out.addr, s->in2out.port, &s->out2in.addr,
304 s->out2in.port, &s->ext_host_addr, s->ext_host_port,
305 &s->ext_host_nat_addr, s->ext_host_nat_port,
306 s->in2out.protocol, s->in2out.fib_index, s->flags,
320 rx_fib_index, src_port, dst_port);
321 if (!clib_bihash_search_16_8 (&tsm->
in2out_ed, &kv, &value))
329 u32 rx_fib_index,
u32 thread_index)
335 snat_session_t *s = 0;
339 if (ip->
protocol == IP_PROTOCOL_ICMP)
344 else if (ip->
protocol == IP_PROTOCOL_UDP || ip->
protocol == IP_PROTOCOL_TCP)
364 if (!clib_bihash_search_16_8 (&tsm->
in2out_ed, &kv, &value))
393 s->ext_host_addr = key.
r_addr;
394 s->ext_host_port = key.
r_port;
396 s->out2in.addr = key.
l_addr;
397 s->out2in.port = key.
l_port;
398 s->out2in.protocol =
proto;
404 s->out2in.fib_index = 0;
405 s->in2out = s->out2in;
409 if (clib_bihash_add_del_16_8 (&tsm->
in2out_ed, &kv, 1))
413 if (ip->
protocol == IP_PROTOCOL_TCP)
417 (sm, s, tcp->flags, tcp->ack_number, tcp->seq_number, thread_index))
439 #ifndef CLIB_MARCH_VARIANT 444 u8 * p_dont_translate,
void *d,
void *e)
450 snat_session_t *s = 0;
451 u8 dont_translate = 0, is_addr_only, identity_nat;
459 b->
error = node->
errors[NAT_OUT2IN_ED_ERROR_UNSUPPORTED_PROTOCOL];
467 if (clib_bihash_search_16_8 (&tsm->
out2in_ed, &kv, &value))
475 (sm, e_key, &l_key, 1, &is_addr_only, 0, 0, 0, &identity_nat))
486 b->
error = node->
errors[NAT_OUT2IN_ED_ERROR_NO_TRANSLATION];
494 thread_index, rx_fib_index))
508 (
vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
510 && (
vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
511 ICMP4_echo_request || !is_addr_only)))
513 b->
error = node->
errors[NAT_OUT2IN_ED_ERROR_BAD_ICMP_TYPE];
539 (
vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
541 &&
vnet_buffer (b)->ip.reass.icmp_type_or_tcp_flags !=
544 reass.icmp_type_or_tcp_flags)))
546 b->
error = node->
errors[NAT_OUT2IN_ED_ERROR_BAD_ICMP_TYPE];
557 *p_value = s->in2out;
558 *p_dont_translate = dont_translate;
560 *(snat_session_t **) d = s;
565 static snat_session_t *
577 u32 old_addr, new_addr;
588 if (!clib_bihash_search_16_8 (&tsm->
out2in_ed, &s_kv, &s_value))
597 b->
error = node->
errors[NAT_OUT2IN_ED_ERROR_MAX_SESSIONS_EXCEEDED];
603 if (clib_bihash_search_8_8
606 b->
error = node->
errors[NAT_OUT2IN_ED_ERROR_NO_TRANSLATION];
635 s->out2in.addr.as_u32 = old_addr;
636 s->out2in.fib_index = rx_fib_index;
637 s->in2out.addr.as_u32 = new_addr;
639 s->in2out.port = s->out2in.port = ip->
protocol;
644 if (clib_bihash_add_del_16_8 (&tsm->
out2in_ed, &s_kv, 1))
650 if (clib_bihash_add_del_16_8 (&tsm->
in2out_ed, &s_kv, 1))
675 u32 n_left_from, *from, *to_next, pkts_processed = 0, stats_node_index;
681 u32 tcp_packets = 0, udp_packets = 0, icmp_packets = 0, other_packets =
691 while (n_left_from > 0)
697 while (n_left_from >= 4 && n_left_to_next >= 2)
701 u32 next0, sw_if_index0, rx_fib_index0, proto0, old_addr0,
703 u32 next1, sw_if_index1, rx_fib_index1, proto1, old_addr1,
705 u16 old_port0, new_port0, old_port1, new_port1;
709 icmp46_header_t *icmp0, *icmp1;
710 snat_session_t *s0 = 0, *s1 = 0;
716 u8 identity_nat0, identity_nat1;
733 to_next[0] = bi0 = from[0];
734 to_next[1] = bi1 = from[1];
758 ICMP4_time_exceeded_ttl_exceeded_in_transit,
766 icmp0 = (icmp46_header_t *) udp0;
775 thread_index, now, vm,
789 (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
790 next0, now, thread_index, &s0);
815 if (clib_bihash_search_16_8 (&tsm->
out2in_ed, &kv0, &value0))
826 &twice_nat0, &lb_nat0,
835 (proto0 == SNAT_PROTOCOL_UDP
838 (UDP_DST_PORT_dhcp_to_client))))
846 node->
errors[NAT_OUT2IN_ED_ERROR_NO_TRANSLATION];
855 thread_index, rx_fib_index0))
873 if ((proto0 == SNAT_PROTOCOL_TCP)
875 reass.icmp_type_or_tcp_flags))
877 b0->
error = node->
errors[NAT_OUT2IN_ED_ERROR_NON_SYN];
919 old_port0 =
vnet_buffer (b0)->ip.reass.l4_dst_port;
925 new_port0 = udp0->
dst_port = s0->in2out.port;
926 sum0 = tcp0->checksum;
936 s0->ext_host_nat_addr.as_u32,
944 tcp0->src_port = s0->ext_host_nat_port;
959 new_port0 = udp0->
dst_port = s0->in2out.port;
968 s0->ext_host_nat_addr.as_u32,
975 udp0->
src_port = s0->ext_host_nat_port;
985 new_port0 = udp0->
dst_port = s0->in2out.port;
991 udp0->
src_port = s0->ext_host_nat_port;
993 s0->ext_host_nat_addr.as_u32;
1010 && (b0->
flags & VLIB_BUFFER_IS_TRACED)))
1036 ICMP4_time_exceeded_ttl_exceeded_in_transit,
1044 icmp1 = (icmp46_header_t *) udp1;
1053 thread_index, now, vm,
1067 (sm, b1, ip1, icmp1, sw_if_index1, rx_fib_index1, node,
1068 next1, now, thread_index, &s1);
1093 if (clib_bihash_search_16_8 (&tsm->
out2in_ed, &kv1, &value1))
1104 &twice_nat1, &lb_nat1,
1113 (proto1 == SNAT_PROTOCOL_UDP
1115 clib_host_to_net_u16
1116 (UDP_DST_PORT_dhcp_to_client))))
1124 node->
errors[NAT_OUT2IN_ED_ERROR_NO_TRANSLATION];
1133 thread_index, rx_fib_index1))
1151 if ((proto1 == SNAT_PROTOCOL_TCP)
1153 reass.icmp_type_or_tcp_flags))
1155 b1->
error = node->
errors[NAT_OUT2IN_ED_ERROR_NON_SYN];
1197 old_port1 =
vnet_buffer (b1)->ip.reass.l4_dst_port;
1203 new_port1 = udp1->
dst_port = s1->in2out.port;
1205 sum1 = tcp1->checksum;
1215 s1->ext_host_nat_addr.as_u32,
1223 tcp1->src_port = s1->ext_host_nat_port;
1238 new_port1 = udp1->
dst_port = s1->in2out.port;
1247 s1->ext_host_nat_addr.as_u32,
1254 udp1->
src_port = s1->ext_host_nat_port;
1269 udp1->
src_port = s1->ext_host_nat_port;
1271 s1->ext_host_nat_addr.as_u32;
1288 && (b1->
flags & VLIB_BUFFER_IS_TRACED)))
1304 to_next, n_left_to_next,
1305 bi0, bi1, next0, next1);
1308 while (n_left_from > 0 && n_left_to_next > 0)
1312 u32 next0, sw_if_index0, rx_fib_index0, proto0, old_addr0,
1314 u16 old_port0, new_port0;
1318 icmp46_header_t *icmp0;
1319 snat_session_t *s0 = 0;
1333 n_left_to_next -= 1;
1350 ICMP4_time_exceeded_ttl_exceeded_in_transit,
1358 icmp0 = (icmp46_header_t *) udp0;
1367 thread_index, now, vm,
1381 (sm, b0, ip0, icmp0, sw_if_index0, rx_fib_index0, node,
1382 next0, now, thread_index, &s0);
1407 if (clib_bihash_search_16_8 (&tsm->
out2in_ed, &kv0, &value0))
1418 &twice_nat0, &lb_nat0,
1427 (proto0 == SNAT_PROTOCOL_UDP
1429 clib_host_to_net_u16
1430 (UDP_DST_PORT_dhcp_to_client))))
1438 node->
errors[NAT_OUT2IN_ED_ERROR_NO_TRANSLATION];
1447 thread_index, rx_fib_index0))
1465 if ((proto0 == SNAT_PROTOCOL_TCP)
1467 reass.icmp_type_or_tcp_flags))
1469 b0->
error = node->
errors[NAT_OUT2IN_ED_ERROR_NON_SYN];
1511 old_port0 =
vnet_buffer (b0)->ip.reass.l4_dst_port;
1517 new_port0 = udp0->
dst_port = s0->in2out.port;
1518 sum0 = tcp0->checksum;
1528 s0->ext_host_nat_addr.as_u32,
1536 tcp0->src_port = s0->ext_host_nat_port;
1551 new_port0 = udp0->
dst_port = s0->in2out.port;
1560 s0->ext_host_nat_addr.as_u32,
1567 udp0->
src_port = s0->ext_host_nat_port;
1577 new_port0 = udp0->
dst_port = s0->in2out.port;
1580 udp0->
src_port = s0->ext_host_nat_port;
1596 && (b0->
flags & VLIB_BUFFER_IS_TRACED)))
1611 to_next, n_left_to_next,
1619 NAT_OUT2IN_ED_ERROR_OUT2IN_PACKETS,
1622 NAT_OUT2IN_ED_ERROR_TCP_PACKETS, tcp_packets);
1624 NAT_OUT2IN_ED_ERROR_UDP_PACKETS, udp_packets);
1626 NAT_OUT2IN_ED_ERROR_ICMP_PACKETS,
1629 NAT_OUT2IN_ED_ERROR_OTHER_PACKETS,
1632 NAT_OUT2IN_ED_ERROR_FRAGMENTS, fragments);
1645 .name =
"nat44-ed-out2in",
1646 .vector_size =
sizeof (
u32),
1647 .sibling_of =
"nat-default",
1665 .name =
"nat44-ed-out2in-slowpath",
1666 .vector_size =
sizeof (
u32),
1667 .sibling_of =
"nat-default",
1695 .name =
"nat-pre-out2in",
1696 .vector_size =
sizeof (
u32),
1697 .sibling_of =
"nat-default",
u32 flags
buffer flags: VLIB_BUFFER_FREE_LIST_INDEX_MASK: bits used to store free list index, VLIB_BUFFER_IS_TRACED: trace this buffer.
#define nat_buffer_opaque(b)
#define snat_is_session_static(s)
Check if SNAT session is created from static mapping.
u32 icmp_out2in(snat_main_t *sm, vlib_buffer_t *b0, ip4_header_t *ip0, icmp46_header_t *icmp0, u32 sw_if_index0, u32 rx_fib_index0, vlib_node_runtime_t *node, u32 next0, u32 thread_index, void *d, void *e)
static int next_src_nat(snat_main_t *sm, ip4_header_t *ip, u8 proto, u16 src_port, u16 dst_port, u32 thread_index, u32 rx_fib_index)
static u32 nat44_session_get_timeout(snat_main_t *sm, snat_session_t *s)
#define nat_elog_notice(nat_elog_str)
static f64 vlib_time_now(vlib_main_t *vm)
u32 fib_table_get_index_for_sw_if_index(fib_protocol_t proto, u32 sw_if_index)
Get the index of the FIB bound to the interface.
static void make_sm_kv(clib_bihash_kv_8_8_t *kv, ip4_address_t *addr, u8 proto, u32 fib_index, u16 port)
u32 ed_out2in_slowpath_node_index
void nat_syslog_nat44_sdel(u32 ssubix, u32 sfibix, ip4_address_t *isaddr, u16 isport, ip4_address_t *idaddr, u16 idport, ip4_address_t *xsaddr, u16 xsport, ip4_address_t *xdaddr, u16 xdport, snat_protocol_t proto, u8 is_twicenat)
#define nat_elog_warn(nat_elog_str)
void nat_ha_sadd(ip4_address_t *in_addr, u16 in_port, ip4_address_t *out_addr, u16 out_port, ip4_address_t *eh_addr, u16 eh_port, ip4_address_t *ehn_addr, u16 ehn_port, u8 proto, u32 fib_index, u16 flags, u32 thread_index, u8 is_resync)
Create session add HA event.
vlib_node_registration_t nat44_ed_out2in_node
(constructor) VLIB_REGISTER_NODE (nat44_ed_out2in_node)
#define VLIB_NODE_FN(node)
vlib_error_t * errors
Vector of errors for this node.
static uword vlib_buffer_length_in_chain(vlib_main_t *vm, vlib_buffer_t *b)
Get length in bytes of the buffer chain.
struct _tcp_header tcp_header_t
#define snat_is_unk_proto_session(s)
Check if SNAT session for unknown protocol.
static u32 icmp_out2in_ed_slow_path(snat_main_t *sm, vlib_buffer_t *b0, ip4_header_t *ip0, icmp46_header_t *icmp0, u32 sw_if_index0, u32 rx_fib_index0, vlib_node_runtime_t *node, u32 next0, f64 now, u32 thread_index, snat_session_t **p_s0)
u32 ip4_fib_table_get_index_for_sw_if_index(u32 sw_if_index)
static char * nat_out2in_ed_error_strings[]
vl_api_interface_index_t sw_if_index
#define vlib_prefetch_buffer_header(b, type)
Prefetch buffer metadata.
#define vec_elt_at_index(v, i)
Get vector value at index i checking that i is in bounds.
static void * ip4_next_header(ip4_header_t *i)
static u8 maximum_sessions_exceeded(snat_main_t *sm, u32 thread_index)
int snat_static_mapping_match(snat_main_t *sm, snat_session_key_t match, snat_session_key_t *mapping, u8 by_external, u8 *is_addr_only, twice_nat_type_t *twice_nat, lb_nat_type_t *lb, ip4_address_t *ext_host_addr, u8 *is_identity_nat)
Match NAT44 static mapping.
void snat_free_outside_address_and_port(snat_address_t *addresses, u32 thread_index, snat_session_key_t *k)
Free outside address and port pair.
static void nat44_delete_session(snat_main_t *sm, snat_session_t *ses, u32 thread_index)
vl_api_fib_path_type_t type
vlib_error_t error
Error code for buffers to be enqueued to error handler.
int nat44_o2i_ed_is_idle_session_cb(clib_bihash_kv_16_8_t *kv, void *arg)
int snat_alloc_outside_address_and_port(snat_address_t *addresses, u32 fib_index, u32 thread_index, snat_session_key_t *k, u16 port_per_thread, u32 snat_thread_index)
Alloc outside address and port.
snat_user_t * nat_user_get_or_create(snat_main_t *sm, ip4_address_t *addr, u32 fib_index, u32 thread_index)
Find or create NAT user.
#define pool_elt_at_index(p, i)
Returns pointer to element at given index.
#define foreach_nat_out2in_ed_error
clib_bihash_16_8_t out2in_ed
static_always_inline u8 icmp_type_is_error_message(u8 icmp_type)
snat_session_t * nat_ed_session_alloc(snat_main_t *sm, snat_user_t *u, u32 thread_index, f64 now)
Allocate NAT endpoint-dependent session.
snat_static_mapping_t * static_mappings
static void * vlib_buffer_get_current(vlib_buffer_t *b)
Get pointer to current data to process.
void nat_syslog_nat44_sadd(u32 ssubix, u32 sfibix, ip4_address_t *isaddr, u16 isport, ip4_address_t *idaddr, u16 idport, ip4_address_t *xsaddr, u16 xsport, ip4_address_t *xdaddr, u16 xdport, snat_protocol_t proto, u8 is_twicenat)
vlib_node_registration_t nat_pre_out2in_node
(constructor) VLIB_REGISTER_NODE (nat_pre_out2in_node)
clib_bihash_8_8_t static_mapping_by_external
vl_api_address_union_t src_address
#define vlib_validate_buffer_enqueue_x2(vm, node, next_index, to_next, n_left_to_next, bi0, bi1, next0, next1)
Finish enqueueing two buffers forward in the graph.
#define SNAT_SESSION_FLAG_UNKNOWN_PROTO
#define vlib_validate_buffer_enqueue_x1(vm, node, next_index, to_next, n_left_to_next, bi0, next0)
Finish enqueueing one buffer forward in the graph.
#define vlib_get_next_frame(vm, node, next_index, vectors, n_vectors_left)
Get pointer to next frame vector data by (vlib_node_runtime_t, next_index).
static void vlib_node_increment_counter(vlib_main_t *vm, u32 node_index, u32 counter_index, u64 increment)
void snat_ipfix_logging_nat44_ses_delete(u32 thread_index, u32 src_ip, u32 nat_src_ip, snat_protocol_t snat_proto, u16 src_port, u16 nat_src_port, u32 vrf_id)
Generate NAT44 session delete event.
static void nat44_delete_user_with_no_session(snat_main_t *sm, snat_user_t *u, u32 thread_index)
#define VLIB_REGISTER_NODE(x,...)
static u8 snat_proto_to_ip_proto(snat_protocol_t snat_proto)
#define CLIB_PREFETCH(addr, size, type)
static void nat44_session_update_counters(snat_session_t *s, f64 now, uword bytes, u32 thread_index)
static u8 * format_nat44_ed_out2in_trace(u8 *s, va_list *args)
static uword nat44_ed_out2in_node_fn_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int is_slow_path)
static u8 * format_nat_pre_trace(u8 *s, va_list *args)
8 octet key, 8 octet key value pair
void vlib_put_next_frame(vlib_main_t *vm, vlib_node_runtime_t *r, u32 next_index, u32 n_vectors_left)
Release pointer to next frame vector data.
static int nat44_set_tcp_session_state_o2i(snat_main_t *sm, snat_session_t *ses, u8 tcp_flags, u32 tcp_ack_number, u32 tcp_seq_number, u32 thread_index)
vlib_node_registration_t nat44_ed_out2in_slowpath_node
(constructor) VLIB_REGISTER_NODE (nat44_ed_out2in_slowpath_node)
static uword nat_pre_node_fn_inline(vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, u32 def_next)
The NAT inline functions.
static void make_ed_kv(clib_bihash_kv_16_8_t *kv, ip4_address_t *l_addr, ip4_address_t *r_addr, u8 proto, u32 fib_index, u16 l_port, u16 r_port)
vlib_main_t vlib_node_runtime_t * node
static snat_session_t * nat44_ed_out2in_unknown_proto(snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, u32 rx_fib_index, u32 thread_index, f64 now, vlib_main_t *vm, vlib_node_runtime_t *node)
u16 cached_next_index
Next frame index that vector arguments were last enqueued to last time this node ran.
#define SNAT_SESSION_FLAG_TWICE_NAT
static void nat44_session_update_lru(snat_main_t *sm, snat_session_t *s, u32 thread_index)
Per-user LRU list maintenance.
static snat_session_t * create_session_for_static_mapping_ed(snat_main_t *sm, vlib_buffer_t *b, snat_session_key_t l_key, snat_session_key_t e_key, vlib_node_runtime_t *node, u32 thread_index, twice_nat_type_t twice_nat, lb_nat_type_t lb_nat, f64 now)
#define SNAT_SESSION_FLAG_ENDPOINT_DEPENDENT
static_always_inline int get_icmp_o2i_ed_key(vlib_buffer_t *b, ip4_header_t *ip0, nat_ed_ses_key_t *p_key0)
snat_address_t * twice_nat_addresses
void nat_ha_sdel(ip4_address_t *out_addr, u16 out_port, ip4_address_t *eh_addr, u16 eh_port, u8 proto, u32 fib_index, u32 thread_index)
Create session delete HA event.
static void * vlib_add_trace(vlib_main_t *vm, vlib_node_runtime_t *r, vlib_buffer_t *b, u32 n_data_bytes)
#define SNAT_SESSION_FLAG_FWD_BYPASS
static u32 ip_proto_to_snat_proto(u8 ip_proto)
int nat44_i2o_ed_is_idle_session_cb(clib_bihash_kv_16_8_t *kv, void *arg)
static void user_session_increment(snat_main_t *sm, snat_user_t *u, u8 is_static)
u32 icmp_match_out2in_ed(snat_main_t *sm, vlib_node_runtime_t *node, u32 thread_index, vlib_buffer_t *b, ip4_header_t *ip, u8 *p_proto, snat_session_key_t *p_value, u8 *p_dont_translate, void *d, void *e)
#define vec_len(v)
Number of elements in vector (rvalue-only, NULL tolerant)
#define SNAT_SESSION_FLAG_AFFINITY
VLIB buffer representation.
snat_main_per_thread_data_t * per_thread_data
static_always_inline void nat44_session_try_cleanup(ip4_address_t *addr, u32 fib_index, u32 thread_index, f64 now)
static void * vlib_frame_vector_args(vlib_frame_t *f)
Get pointer to frame vector data.
#define ip_csum_update(sum, old, new, type, field)
static u8 is_interface_addr(snat_main_t *sm, vlib_node_runtime_t *node, u32 sw_if_index0, u32 ip4_addr)
static void create_bypass_for_fwd(snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, u32 rx_fib_index, u32 thread_index)
snat_address_t * addresses
snat_get_worker_in2out_function_t * worker_in2out_cb
#define SNAT_SESSION_FLAG_STATIC_MAPPING
vlib_main_t vlib_node_runtime_t vlib_frame_t * frame
static void create_bypass_for_fwd_worker(snat_main_t *sm, vlib_buffer_t *b, ip4_header_t *ip, u32 rx_fib_index)
u16 flags
Copy of main node flags.
#define is_twice_nat_session(s)
Check if NAT session is twice NAT.
clib_bihash_16_8_t in2out_ed
#define VLIB_NODE_FLAG_TRACE
#define CLIB_CACHE_LINE_BYTES
snat_session_t * sessions
static_always_inline void icmp4_error_set_vnet_buffer(vlib_buffer_t *b, u8 type, u8 code, u32 data)
static vlib_buffer_t * vlib_get_buffer(vlib_main_t *vm, u32 buffer_index)
Translate buffer index into buffer pointer.
#define SNAT_SESSION_FLAG_LOAD_BALANCING
static u16 ip_csum_fold(ip_csum_t c)
void snat_ipfix_logging_nat44_ses_create(u32 thread_index, u32 src_ip, u32 nat_src_ip, snat_protocol_t snat_proto, u16 src_port, u16 nat_src_port, u32 vrf_id)
Generate NAT44 session create event.
static bool tcp_flags_is_init(u8 f)
Check if client initiating TCP connection (received SYN from client)