/* * nat_ipfix_logging.c - NAT Events IPFIX logging * * Copyright (c) 2016 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <vnet/ipfix-export/flow_report.h> #include <vlibmemory/api.h> #include <nat/nat_inlines.h> #include <nat/nat_ipfix_logging.h> #include <vppinfra/atomics.h> vlib_node_registration_t snat_ipfix_flush_node; snat_ipfix_logging_main_t snat_ipfix_logging_main; #define NAT44_SESSION_CREATE_LEN 26 #define NAT_ADDRESSES_EXHAUTED_LEN 13 #define MAX_ENTRIES_PER_USER_LEN 21 #define MAX_SESSIONS_LEN 17 #define MAX_BIBS_LEN 17 #define MAX_FRAGMENTS_IP4_LEN 21 #define MAX_FRAGMENTS_IP6_LEN 33 #define NAT64_BIB_LEN 38 #define NAT64_SES_LEN 62 #define NAT44_SESSION_CREATE_FIELD_COUNT 8 #define NAT_ADDRESSES_EXHAUTED_FIELD_COUNT 3 #define MAX_ENTRIES_PER_USER_FIELD_COUNT 5 #define MAX_SESSIONS_FIELD_COUNT 4 #define MAX_BIBS_FIELD_COUNT 4 #define MAX_FRAGMENTS_FIELD_COUNT 5 #define NAT64_BIB_FIELD_COUNT 8 #define NAT64_SES_FIELD_COUNT 12 typedef struct { u8 nat_event; u32 src_ip; u32 nat_src_ip; nat_protocol_t nat_proto; u16 src_port; u16 nat_src_port; u32 vrf_id; } snat_ipfix_logging_nat44_ses_args_t; typedef struct { u32 pool_id; } snat_ipfix_logging_addr_exhausted_args_t; typedef struct { u32 limit; u32 src_ip; } snat_ipfix_logging_max_entries_per_user_args_t; typedef struct { u32 limit; } nat_ipfix_logging_max_sessions_args_t; typedef struct { u32 limit; } nat_ipfix_logging_max_bibs_args_t; typedef struct { u32 limit; u32 src; } nat_ipfix_logging_max_frags_ip4_args_t; typedef struct { u32 limit; u64 src[2]; } nat_ipfix_logging_max_frags_ip6_args_t; typedef struct { u8 nat_event; u64 src_ip[2]; u32 nat_src_ip; u8 proto; u16 src_port; u16 nat_src_port; u64 dst_ip[2]; u32 nat_dst_ip; u32 vrf_id; u16 dst_port; u16 nat_dst_port; } nat_ipfix_logging_nat64_ses_args_t; typedef struct { u8 nat_event; u64 src_ip[2]; u32 nat_src_ip; u8 proto; u16 src_port; u16 nat_src_port; u32 vrf_id; } nat_ipfix_logging_nat64_bib_args_t; #define skip_if_disabled() \ do { \ snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; \ if (PREDICT_TRUE (!clib_atomic_fetch_or(&silm->enabled, 0))) \ return; \ } while (0) #define update_template_id(old_id, new_id) \ do { \ u16 template_id = clib_atomic_fetch_or(old_id, 0); \ clib_atomic_cmp_and_swap(old_id, template_id, new_id); \ } while (0) /** * @brief Create an IPFIX template packet rewrite string * * @param frm flow report main * @param fr flow report * @param collector_address collector address * @param src_address source address * @param collector_port collector * @param event NAT event ID * @param quota_event NAT quota exceeded event ID * * @returns template packet */ static inline u8 * snat_template_rewrite (flow_report_main_t * frm, flow_report_t * fr, ip4_address_t * collector_address, ip4_address_t * src_address, u16 collector_port, nat_event_t event, quota_exceed_event_t quota_event) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; ip4_header_t *ip; udp_header_t *udp; ipfix_message_header_t *h; ipfix_set_header_t *s; ipfix_template_header_t *t; ipfix_field_specifier_t *f; ipfix_field_specifier_t *first_field; u8 *rewrite = 0; ip4_ipfix_template_packet_t *tp; u32 field_count = 0; flow_report_stream_t *stream; u32 stream_index; stream = &frm->streams[fr->stream_index]; stream_index = clib_atomic_fetch_or(&silm->stream_index, 0); clib_atomic_cmp_and_swap (&silm->stream_index, stream_index, fr->stream_index); if (event == NAT_ADDRESSES_EXHAUTED) { field_count = NAT_ADDRESSES_EXHAUTED_FIELD_COUNT; update_template_id(&silm->addr_exhausted_template_id, fr->template_id); } else if (event == NAT44_SESSION_CREATE) { field_count = NAT44_SESSION_CREATE_FIELD_COUNT; update_template_id(&silm->nat44_session_template_id, fr->template_id); } else if (event == NAT64_BIB_CREATE) { field_count = NAT64_BIB_FIELD_COUNT; update_template_id(&silm->nat64_bib_template_id, fr->template_id); } else if (event == NAT64_SESSION_CREATE) { field_count = NAT64_SES_FIELD_COUNT; update_template_id(&silm->nat64_ses_template_id, fr->template_id); } else if (event == QUOTA_EXCEEDED) { if (quota_event == MAX_ENTRIES_PER_USER) { field_count = MAX_ENTRIES_PER_USER_FIELD_COUNT; update_template_id(&silm->max_entries_per_user_template_id, fr->template_id); } else if (quota_event == MAX_SESSION_ENTRIES) { field_count = MAX_SESSIONS_FIELD_COUNT; update_template_id(&silm->max_sessions_template_id, fr->template_id); } else if (quota_event == MAX_BIB_ENTRIES) { field_count = MAX_BIBS_FIELD_COUNT; update_template_id(&silm->max_bibs_template_id, fr->template_id); } } /* allocate rewrite space */ vec_validate_aligned (rewrite, sizeof (ip4_ipfix_template_packet_t) + field_count * sizeof (ipfix_field_specifier_t) - 1, CLIB_CACHE_LINE_BYTES); tp = (ip4_ipfix_template_packet_t *) rewrite; ip = (ip4_header_t *) & tp->ip4; udp = (udp_header_t *) (ip + 1); h = (ipfix_message_header_t *) (udp + 1); s = (ipfix_set_header_t *) (h + 1); t = (ipfix_template_header_t *) (s + 1); first_field = f = (ipfix_field_specifier_t *) (t + 1); ip->ip_version_and_header_length = 0x45; ip->ttl = 254; ip->protocol = IP_PROTOCOL_UDP; ip->src_address.as_u32 = src_address->as_u32; ip->dst_address.as_u32 = collector_address->as_u32; udp->src_port = clib_host_to_net_u16 (stream->src_port); udp->dst_port = clib_host_to_net_u16 (collector_port); udp->length = clib_host_to_net_u16 (vec_len (rewrite) - sizeof (*ip)); /* FIXUP: message header export_time */ h->domain_id = clib_host_to_net_u32 (stream->domain_id); /* Add TLVs to the template */ if (event == NAT_ADDRESSES_EXHAUTED) { f->e_id_length = ipfix_e_id_length (0, observationTimeMilliseconds, 8); f++; f->e_id_length = ipfix_e_id_length (0, natEvent, 1); f++; f->e_id_length = ipfix_e_id_length (0, natPoolId, 4); f++; } else if (event == NAT44_SESSION_CREATE) { f->e_id_length = ipfix_e_id_length (0, observationTimeMilliseconds, 8); f++; f->e_id_length = ipfix_e_id_length (0, natEvent, 1); f++; f->e_id_length = ipfix_e_id_length (0, sourceIPv4Address, 4); f++; f->e_id_length = ipfix_e_id_length (0, postNATSourceIPv4Address, 4); f++; f->e_id_length = ipfix_e_id_length (0, protocolIdentifier, 1); f++; f->e_id_length = ipfix_e_id_length (0, sourceTransportPort, 2); f++; f->e_id_length = ipfix_e_id_length (0, postNAPTSourceTransportPort, 2); f++; f->e_id_length = ipfix_e_id_length (0, ingressVRFID, 4); f++; } else if (event == NAT64_BIB_CREATE) { f->e_id_length = ipfix_e_id_length (0, observationTimeMilliseconds, 8); f++; f->e_id_length = ipfix_e_id_length (0, natEvent, 1); f++; f->e_id_length = ipfix_e_id_length (0, sourceIPv6Address, 16); f++; f->e_id_length = ipfix_e_id_length (0, postNATSourceIPv4Address, 4); f++; f->e_id_length = ipfix_e_id_length (0, protocolIdentifier, 1); f++; f->e_id_length = ipfix_e_id_length (0, sourceTransportPort, 2); f++; f->e_id_length = ipfix_e_id_length (0, postNAPTSourceTransportPort, 2); f++; f->e_id_length = ipfix_e_id_length (0, ingressVRFID, 4); f++; } else if (event == NAT64_SESSION_CREATE) { f->e_id_length = ipfix_e_id_length (0, observationTimeMilliseconds, 8); f++; f->e_id_length = ipfix_e_id_length (0, natEvent, 1); f++; f->e_id_length = ipfix_e_id_length (0, sourceIPv6Address, 16); f++; f->e_id_length = ipfix_e_id_length (0, postNATSourceIPv4Address, 4); f++; f->e_id_length = ipfix_e_id_length (0, protocolIdentifier, 1); f++; f->e_id_length = ipfix_e_id_length (0, sourceTransportPort, 2); f++; f->e_id_length = ipfix_e_id_length (0, postNAPTSourceTransportPort, 2); f++; f->e_id_length = ipfix_e_id_length (0, destinationIPv6Address, 16); f++; f->e_id_length = ipfix_e_id_length (0, postNATDestinationIPv4Address, 4); f++; f->e_id_length = ipfix_e_id_length (0, destinationTransportPort, 2); f++; f->e_id_length = ipfix_e_id_length (0, postNAPTDestinationTransportPort, 2); f++; f->e_id_length = ipfix_e_id_length (0, ingressVRFID, 4); f++; } else if (event == QUOTA_EXCEEDED) { if (quota_event == MAX_ENTRIES_PER_USER) { f->e_id_length = ipfix_e_id_length (0, observationTimeMilliseconds, 8); f++; f->e_id_length = ipfix_e_id_length (0, natEvent, 1); f++; f->e_id_length = ipfix_e_id_length (0, natQuotaExceededEvent, 4); f++; f->e_id_length = ipfix_e_id_length (0, maxEntriesPerUser, 4); f++; f->e_id_length = ipfix_e_id_length (0, sourceIPv4Address, 4); f++; } else if (quota_event == MAX_SESSION_ENTRIES) { f->e_id_length = ipfix_e_id_length (0, observationTimeMilliseconds, 8); f++; f->e_id_length = ipfix_e_id_length (0, natEvent, 1); f++; f->e_id_length = ipfix_e_id_length (0, natQuotaExceededEvent, 4); f++; f->e_id_length = ipfix_e_id_length (0, maxSessionEntries, 4); f++; } else if (quota_event == MAX_BIB_ENTRIES) { f->e_id_length = ipfix_e_id_length (0, observationTimeMilliseconds, 8); f++; f->e_id_length = ipfix_e_id_length (0, natEvent, 1); f++; f->e_id_length = ipfix_e_id_length (0, natQuotaExceededEvent, 4); f++; f->e_id_length = ipfix_e_id_length (0, maxBIBEntries, 4); f++; } } /* Back to the template packet... */ ip = (ip4_header_t *) & tp->ip4; udp = (udp_header_t *) (ip + 1); ASSERT (f - first_field); /* Field count in this template */ t->id_count = ipfix_id_count (fr->template_id, f - first_field); /* set length in octets */ s->set_id_length = ipfix_set_id_length (2 /* set_id */ , (u8 *) f - (u8 *) s); /* message length in octets */ h->version_length = version_length ((u8 *) f - (u8 *) h); ip->length = clib_host_to_net_u16 ((u8 *) f - (u8 *) ip); ip->checksum = ip4_header_checksum (ip); return rewrite; } u8 * snat_template_rewrite_addr_exhausted (flow_report_main_t * frm, flow_report_t * fr, ip4_address_t * collector_address, ip4_address_t * src_address, u16 collector_port, ipfix_report_element_t *elts, u32 n_elts, u32 *stream_index) { return snat_template_rewrite (frm, fr, collector_address, src_address, collector_port, NAT_ADDRESSES_EXHAUTED, 0); } u8 * snat_template_rewrite_nat44_session (flow_report_main_t * frm, flow_report_t * fr, ip4_address_t * collector_address, ip4_address_t * src_address, u16 collector_port, ipfix_report_element_t *elts, u32 n_elts, u32 *stream_index) { return snat_template_rewrite (frm, fr, collector_address, src_address, collector_port, NAT44_SESSION_CREATE, 0); } u8 * snat_template_rewrite_max_entries_per_usr (flow_report_main_t * frm, flow_report_t * fr, ip4_address_t * collector_address, ip4_address_t * src_address, u16 collector_port, ipfix_report_element_t *elts, u32 n_elts, u32 *stream_index) { return snat_template_rewrite (frm, fr, collector_address, src_address, collector_port, QUOTA_EXCEEDED, MAX_ENTRIES_PER_USER); } u8 * nat_template_rewrite_max_sessions (flow_report_main_t * frm, flow_report_t * fr, ip4_address_t * collector_address, ip4_address_t * src_address, u16 collector_port, ipfix_report_element_t *elts, u32 n_elts, u32 *stream_index) { return snat_template_rewrite (frm, fr, collector_address, src_address, collector_port, QUOTA_EXCEEDED, MAX_SESSION_ENTRIES); } u8 * nat_template_rewrite_max_bibs (flow_report_main_t * frm, flow_report_t * fr, ip4_address_t * collector_address, ip4_address_t * src_address, u16 collector_port, ipfix_report_element_t *elts, u32 n_elts, u32 *stream_index) { return snat_template_rewrite (frm, fr, collector_address, src_address, collector_port, QUOTA_EXCEEDED, MAX_BIB_ENTRIES); } u8 * nat_template_rewrite_nat64_bib (flow_report_main_t * frm, flow_report_t * fr, ip4_address_t * collector_address, ip4_address_t * src_address, u16 collector_port, ipfix_report_element_t *elts, u32 n_elts, u32 *stream_index) { return snat_template_rewrite (frm, fr, collector_address, src_address, collector_port, NAT64_BIB_CREATE, 0); } u8 * nat_template_rewrite_nat64_session (flow_report_main_t * frm, flow_report_t * fr, ip4_address_t * collector_address, ip4_address_t * src_address, u16 collector_port, ipfix_report_element_t *elts, u32 n_elts, u32 *stream_index) { return snat_template_rewrite (frm, fr, collector_address, src_address, collector_port, NAT64_SESSION_CREATE, 0); } static inline void snat_ipfix_header_create (flow_report_main_t * frm, vlib_buffer_t * b0, u32 * offset) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; flow_report_stream_t *stream; ip4_ipfix_template_packet_t *tp; ipfix_message_header_t *h = 0; ipfix_set_header_t *s = 0; u32 sequence_number; u32 stream_index; ip4_header_t *ip; udp_header_t *udp; stream_index = clib_atomic_fetch_or(&silm->stream_index, 0); stream = &frm->streams[stream_index]; b0->current_data = 0; b0->current_length = sizeof (*ip) + sizeof (*udp) + sizeof (*h) + sizeof (*s); b0->flags |= (VLIB_BUFFER_TOTAL_LENGTH_VALID | VNET_BUFFER_F_FLOW_REPORT); vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0; vnet_buffer (b0)->sw_if_index[VLIB_TX] = frm->fib_index; tp = vlib_buffer_get_current (b0); ip = (ip4_header_t *) & tp->ip4; udp = (udp_header_t *) (ip + 1); h = (ipfix_message_header_t *) (udp + 1); s = (ipfix_set_header_t *) (h + 1); ip->ip_version_and_header_length = 0x45; ip->ttl = 254; ip->protocol = IP_PROTOCOL_UDP; ip->flags_and_fragment_offset = 0; ip->src_address.as_u32 = frm->src_address.as_u32; ip->dst_address.as_u32 = frm->ipfix_collector.as_u32; udp->src_port = clib_host_to_net_u16 (stream->src_port); udp->dst_port = clib_host_to_net_u16 (frm->collector_port); udp->checksum = 0; h->export_time = clib_host_to_net_u32 ((u32) (((f64) frm->unix_time_0) + (vlib_time_now (frm->vlib_main) - frm->vlib_time_0))); sequence_number = clib_atomic_fetch_add (&stream->sequence_number, 1); h->sequence_number = clib_host_to_net_u32 (sequence_number); h->domain_id = clib_host_to_net_u32 (stream->domain_id); *offset = (u32) (((u8 *) (s + 1)) - (u8 *) tp); } static inline void snat_ipfix_send (u32 thread_index, flow_report_main_t * frm, vlib_frame_t * f, vlib_buffer_t * b0, u16 template_id) { ip4_ipfix_template_packet_t *tp; ipfix_message_header_t *h = 0; ipfix_set_header_t *s = 0; ip4_header_t *ip; udp_header_t *udp; vlib_main_t *vm = vlib_mains[thread_index]; tp = vlib_buffer_get_current (b0); ip = (ip4_header_t *) & tp->ip4; udp = (udp_header_t *) (ip + 1); h = (ipfix_message_header_t *) (udp + 1); s = (ipfix_set_header_t *) (h + 1); s->set_id_length = ipfix_set_id_length (template_id, b0->current_length - (sizeof (*ip) + sizeof (*udp) + sizeof (*h))); h->version_length = version_length (b0->current_length - (sizeof (*ip) + sizeof (*udp))); ip->length = clib_host_to_net_u16 (b0->current_length); ip->checksum = ip4_header_checksum (ip); udp->length = clib_host_to_net_u16 (b0->current_length - sizeof (*ip)); if (frm->udp_checksum) { udp->checksum = ip4_tcp_udp_compute_checksum (vm, b0, ip); if (udp->checksum == 0) udp->checksum = 0xffff; } ASSERT (ip->checksum == ip4_header_checksum (ip)); vlib_put_frame_to_node (vm, ip4_lookup_node.index, f); } static void snat_ipfix_logging_nat44_ses (u32 thread_index, u8 nat_event, u32 src_ip, u32 nat_src_ip, nat_protocol_t nat_proto, u16 src_port, u16 nat_src_port, u32 vrf_id, int do_flush) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; snat_ipfix_per_thread_data_t *sitd = &silm->per_thread_data[thread_index]; flow_report_main_t *frm = &flow_report_main; vlib_frame_t *f; vlib_buffer_t *b0 = 0; u32 bi0 = ~0; u32 offset; vlib_main_t *vm = vlib_mains[thread_index]; u64 now; u8 proto; u16 template_id; proto = nat_proto_to_ip_proto (nat_proto); now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); now += silm->milisecond_time_0; b0 = sitd->nat44_session_buffer; if (PREDICT_FALSE (b0 == 0)) { if (do_flush) return; if (vlib_buffer_alloc (vm, &bi0, 1) != 1) { nat_elog_err ("can't allocate buffer for NAT IPFIX event"); return; } b0 = sitd->nat44_session_buffer = vlib_get_buffer (vm, bi0); VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); offset = 0; } else { bi0 = vlib_get_buffer_index (vm, b0); offset = sitd->nat44_session_next_record_offset; } f = sitd->nat44_session_frame; if (PREDICT_FALSE (f == 0)) { u32 *to_next; f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); sitd->nat44_session_frame = f; to_next = vlib_frame_vector_args (f); to_next[0] = bi0; f->n_vectors = 1; } if (PREDICT_FALSE (offset == 0)) snat_ipfix_header_create (frm, b0, &offset); if (PREDICT_TRUE (do_flush == 0)) { u64 time_stamp = clib_host_to_net_u64 (now); clib_memcpy_fast (b0->data + offset, &time_stamp, sizeof (time_stamp)); offset += sizeof (time_stamp); clib_memcpy_fast (b0->data + offset, &nat_event, sizeof (nat_event)); offset += sizeof (nat_event); clib_memcpy_fast (b0->data + offset, &src_ip, sizeof (src_ip)); offset += sizeof (src_ip); clib_memcpy_fast (b0->data + offset, &nat_src_ip, sizeof (nat_src_ip)); offset += sizeof (nat_src_ip); clib_memcpy_fast (b0->data + offset, &proto, sizeof (proto)); offset += sizeof (proto); clib_memcpy_fast (b0->data + offset, &src_port, sizeof (src_port)); offset += sizeof (src_port); clib_memcpy_fast (b0->data + offset, &nat_src_port, sizeof (nat_src_port)); offset += sizeof (nat_src_port); clib_memcpy_fast (b0->data + offset, &vrf_id, sizeof (vrf_id)); offset += sizeof (vrf_id); b0->current_length += NAT44_SESSION_CREATE_LEN; } if (PREDICT_FALSE (do_flush || (offset + NAT44_SESSION_CREATE_LEN) > frm->path_mtu)) { template_id = clib_atomic_fetch_or ( &silm->nat44_session_template_id, 0); snat_ipfix_send (thread_index, frm, f, b0, template_id); sitd->nat44_session_frame = 0; sitd->nat44_session_buffer = 0; offset = 0; } sitd->nat44_session_next_record_offset = offset; } static void snat_ipfix_logging_addr_exhausted (u32 thread_index, u32 pool_id, int do_flush) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; snat_ipfix_per_thread_data_t *sitd = &silm->per_thread_data[thread_index]; flow_report_main_t *frm = &flow_report_main; vlib_frame_t *f; vlib_buffer_t *b0 = 0; u32 bi0 = ~0; u32 offset; vlib_main_t *vm = vlib_mains[thread_index]; u64 now; u8 nat_event = NAT_ADDRESSES_EXHAUTED; u16 template_id; now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); now += silm->milisecond_time_0; b0 = sitd->addr_exhausted_buffer; if (PREDICT_FALSE (b0 == 0)) { if (do_flush) return; if (vlib_buffer_alloc (vm, &bi0, 1) != 1) { nat_elog_err ("can't allocate buffer for NAT IPFIX event"); return; } b0 = sitd->addr_exhausted_buffer = vlib_get_buffer (vm, bi0); VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); offset = 0; } else { bi0 = vlib_get_buffer_index (vm, b0); offset = sitd->addr_exhausted_next_record_offset; } f = sitd->addr_exhausted_frame; if (PREDICT_FALSE (f == 0)) { u32 *to_next; f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); sitd->addr_exhausted_frame = f; to_next = vlib_frame_vector_args (f); to_next[0] = bi0; f->n_vectors = 1; } if (PREDICT_FALSE (offset == 0)) snat_ipfix_header_create (frm, b0, &offset); if (PREDICT_TRUE (do_flush == 0)) { u64 time_stamp = clib_host_to_net_u64 (now); clib_memcpy_fast (b0->data + offset, &time_stamp, sizeof (time_stamp)); offset += sizeof (time_stamp); clib_memcpy_fast (b0->data + offset, &nat_event, sizeof (nat_event)); offset += sizeof (nat_event); clib_memcpy_fast (b0->data + offset, &pool_id, sizeof (pool_id)); offset += sizeof (pool_id); b0->current_length += NAT_ADDRESSES_EXHAUTED_LEN; } if (PREDICT_FALSE (do_flush || (offset + NAT_ADDRESSES_EXHAUTED_LEN) > frm->path_mtu)) { template_id = clib_atomic_fetch_or ( &silm->addr_exhausted_template_id, 0); snat_ipfix_send (thread_index, frm, f, b0, template_id); sitd->addr_exhausted_frame = 0; sitd->addr_exhausted_buffer = 0; offset = 0; } sitd->addr_exhausted_next_record_offset = offset; } static void snat_ipfix_logging_max_entries_per_usr (u32 thread_index, u32 limit, u32 src_ip, int do_flush) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; snat_ipfix_per_thread_data_t *sitd = &silm->per_thread_data[thread_index]; flow_report_main_t *frm = &flow_report_main; vlib_frame_t *f; vlib_buffer_t *b0 = 0; u32 bi0 = ~0; u32 offset; vlib_main_t *vm = vlib_mains[thread_index]; u64 now; u8 nat_event = QUOTA_EXCEEDED; u32 quota_event = MAX_ENTRIES_PER_USER; u16 template_id; now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); now += silm->milisecond_time_0; b0 = sitd->max_entries_per_user_buffer; if (PREDICT_FALSE (b0 == 0)) { if (do_flush) return; if (vlib_buffer_alloc (vm, &bi0, 1) != 1) { nat_elog_err ("can't allocate buffer for NAT IPFIX event"); return; } b0 = sitd->max_entries_per_user_buffer = vlib_get_buffer (vm, bi0); VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); offset = 0; } else { bi0 = vlib_get_buffer_index (vm, b0); offset = sitd->max_entries_per_user_next_record_offset; } f = sitd->max_entries_per_user_frame; if (PREDICT_FALSE (f == 0)) { u32 *to_next; f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); sitd->max_entries_per_user_frame = f; to_next = vlib_frame_vector_args (f); to_next[0] = bi0; f->n_vectors = 1; } if (PREDICT_FALSE (offset == 0)) snat_ipfix_header_create (frm, b0, &offset); if (PREDICT_TRUE (do_flush == 0)) { u64 time_stamp = clib_host_to_net_u64 (now); clib_memcpy_fast (b0->data + offset, &time_stamp, sizeof (time_stamp)); offset += sizeof (time_stamp); clib_memcpy_fast (b0->data + offset, &nat_event, sizeof (nat_event)); offset += sizeof (nat_event); clib_memcpy_fast (b0->data + offset, "a_event, sizeof (quota_event)); offset += sizeof (quota_event); clib_memcpy_fast (b0->data + offset, &limit, sizeof (limit)); offset += sizeof (limit); clib_memcpy_fast (b0->data + offset, &src_ip, sizeof (src_ip)); offset += sizeof (src_ip); b0->current_length += MAX_ENTRIES_PER_USER_LEN; } if (PREDICT_FALSE (do_flush || (offset + MAX_ENTRIES_PER_USER_LEN) > frm->path_mtu)) { template_id = clib_atomic_fetch_or ( &silm->max_entries_per_user_template_id, 0); snat_ipfix_send (thread_index, frm, f, b0, template_id); sitd->max_entries_per_user_frame = 0; sitd->max_entries_per_user_buffer = 0; offset = 0; } sitd->max_entries_per_user_next_record_offset = offset; } static void nat_ipfix_logging_max_ses (u32 thread_index, u32 limit, int do_flush) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; snat_ipfix_per_thread_data_t *sitd = &silm->per_thread_data[thread_index]; flow_report_main_t *frm = &flow_report_main; vlib_frame_t *f; vlib_buffer_t *b0 = 0; u32 bi0 = ~0; u32 offset; vlib_main_t *vm = vlib_mains[thread_index]; u64 now; u8 nat_event = QUOTA_EXCEEDED; u32 quota_event = MAX_SESSION_ENTRIES; u16 template_id; now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); now += silm->milisecond_time_0; b0 = sitd->max_sessions_buffer; if (PREDICT_FALSE (b0 == 0)) { if (do_flush) return; if (vlib_buffer_alloc (vm, &bi0, 1) != 1) { nat_elog_err ("can't allocate buffer for NAT IPFIX event"); return; } b0 = sitd->max_sessions_buffer = vlib_get_buffer (vm, bi0); VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); offset = 0; } else { bi0 = vlib_get_buffer_index (vm, b0); offset = sitd->max_sessions_next_record_offset; } f = sitd->max_sessions_frame; if (PREDICT_FALSE (f == 0)) { u32 *to_next; f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); sitd->max_sessions_frame = f; to_next = vlib_frame_vector_args (f); to_next[0] = bi0; f->n_vectors = 1; } if (PREDICT_FALSE (offset == 0)) snat_ipfix_header_create (frm, b0, &offset); if (PREDICT_TRUE (do_flush == 0)) { u64 time_stamp = clib_host_to_net_u64 (now); clib_memcpy_fast (b0->data + offset, &time_stamp, sizeof (time_stamp)); offset += sizeof (time_stamp); clib_memcpy_fast (b0->data + offset, &nat_event, sizeof (nat_event)); offset += sizeof (nat_event); clib_memcpy_fast (b0->data + offset, "a_event, sizeof (quota_event)); offset += sizeof (quota_event); clib_memcpy_fast (b0->data + offset, &limit, sizeof (limit)); offset += sizeof (limit); b0->current_length += MAX_SESSIONS_LEN; } if (PREDICT_FALSE (do_flush || (offset + MAX_SESSIONS_LEN) > frm->path_mtu)) { template_id = clib_atomic_fetch_or ( &silm->max_sessions_template_id, 0); snat_ipfix_send (thread_index, frm, f, b0, template_id); sitd->max_sessions_frame = 0; sitd->max_sessions_buffer = 0; offset = 0; } sitd->max_sessions_next_record_offset = offset; } static void nat_ipfix_logging_max_bib (u32 thread_index, u32 limit, int do_flush) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; snat_ipfix_per_thread_data_t *sitd = &silm->per_thread_data[thread_index]; flow_report_main_t *frm = &flow_report_main; vlib_frame_t *f; vlib_buffer_t *b0 = 0; u32 bi0 = ~0; u32 offset; vlib_main_t *vm = vlib_mains[thread_index]; u64 now; u8 nat_event = QUOTA_EXCEEDED; u32 quota_event = MAX_BIB_ENTRIES; u16 template_id; now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); now += silm->milisecond_time_0; b0 = sitd->max_bibs_buffer; if (PREDICT_FALSE (b0 == 0)) { if (do_flush) return; if (vlib_buffer_alloc (vm, &bi0, 1) != 1) { nat_elog_err ("can't allocate buffer for NAT IPFIX event"); return; } b0 = sitd->max_bibs_buffer = vlib_get_buffer (vm, bi0); VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); offset = 0; } else { bi0 = vlib_get_buffer_index (vm, b0); offset = sitd->max_bibs_next_record_offset; } f = sitd->max_bibs_frame; if (PREDICT_FALSE (f == 0)) { u32 *to_next; f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); sitd->max_bibs_frame = f; to_next = vlib_frame_vector_args (f); to_next[0] = bi0; f->n_vectors = 1; } if (PREDICT_FALSE (offset == 0)) snat_ipfix_header_create (frm, b0, &offset); if (PREDICT_TRUE (do_flush == 0)) { u64 time_stamp = clib_host_to_net_u64 (now); clib_memcpy_fast (b0->data + offset, &time_stamp, sizeof (time_stamp)); offset += sizeof (time_stamp); clib_memcpy_fast (b0->data + offset, &nat_event, sizeof (nat_event)); offset += sizeof (nat_event); clib_memcpy_fast (b0->data + offset, "a_event, sizeof (quota_event)); offset += sizeof (quota_event); clib_memcpy_fast (b0->data + offset, &limit, sizeof (limit)); offset += sizeof (limit); b0->current_length += MAX_BIBS_LEN; } if (PREDICT_FALSE (do_flush || (offset + MAX_BIBS_LEN) > frm->path_mtu)) { template_id = clib_atomic_fetch_or ( &silm->max_bibs_template_id, 0); snat_ipfix_send (thread_index, frm, f, b0, template_id); sitd->max_bibs_frame = 0; sitd->max_bibs_buffer = 0; offset = 0; } sitd->max_bibs_next_record_offset = offset; } static void nat_ipfix_logging_nat64_bibe (u32 thread_index, u8 nat_event, ip6_address_t * src_ip, u32 nat_src_ip, u8 proto, u16 src_port, u16 nat_src_port, u32 vrf_id, int do_flush) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; snat_ipfix_per_thread_data_t *sitd = &silm->per_thread_data[thread_index]; flow_report_main_t *frm = &flow_report_main; vlib_frame_t *f; vlib_buffer_t *b0 = 0; u32 bi0 = ~0; u32 offset; vlib_main_t *vm = vlib_mains[thread_index]; u64 now; u16 template_id; now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); now += silm->milisecond_time_0; b0 = sitd->nat64_bib_buffer; if (PREDICT_FALSE (b0 == 0)) { if (do_flush) return; if (vlib_buffer_alloc (vm, &bi0, 1) != 1) { nat_elog_err ("can't allocate buffer for NAT IPFIX event"); return; } b0 = sitd->nat64_bib_buffer = vlib_get_buffer (vm, bi0); VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); offset = 0; } else { bi0 = vlib_get_buffer_index (vm, b0); offset = sitd->nat64_bib_next_record_offset; } f = sitd->nat64_bib_frame; if (PREDICT_FALSE (f == 0)) { u32 *to_next; f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); sitd->nat64_bib_frame = f; to_next = vlib_frame_vector_args (f); to_next[0] = bi0; f->n_vectors = 1; } if (PREDICT_FALSE (offset == 0)) snat_ipfix_header_create (frm, b0, &offset); if (PREDICT_TRUE (do_flush == 0)) { u64 time_stamp = clib_host_to_net_u64 (now); clib_memcpy_fast (b0->data + offset, &time_stamp, sizeof (time_stamp)); offset += sizeof (time_stamp); clib_memcpy_fast (b0->data + offset, &nat_event, sizeof (nat_event)); offset += sizeof (nat_event); clib_memcpy_fast (b0->data + offset, src_ip, sizeof (ip6_address_t)); offset += sizeof (ip6_address_t); clib_memcpy_fast (b0->data + offset, &nat_src_ip, sizeof (nat_src_ip)); offset += sizeof (nat_src_ip); clib_memcpy_fast (b0->data + offset, &proto, sizeof (proto)); offset += sizeof (proto); clib_memcpy_fast (b0->data + offset, &src_port, sizeof (src_port)); offset += sizeof (src_port); clib_memcpy_fast (b0->data + offset, &nat_src_port, sizeof (nat_src_port)); offset += sizeof (nat_src_port); clib_memcpy_fast (b0->data + offset, &vrf_id, sizeof (vrf_id)); offset += sizeof (vrf_id); b0->current_length += NAT64_BIB_LEN; } if (PREDICT_FALSE (do_flush || (offset + NAT64_BIB_LEN) > frm->path_mtu)) { template_id = clib_atomic_fetch_or ( &silm->nat64_bib_template_id, 0); snat_ipfix_send (thread_index, frm, f, b0, template_id); sitd->nat64_bib_frame = 0; sitd->nat64_bib_buffer = 0; offset = 0; } sitd->nat64_bib_next_record_offset = offset; } static void nat_ipfix_logging_nat64_ses (u32 thread_index, u8 nat_event, ip6_address_t * src_ip, u32 nat_src_ip, u8 proto, u16 src_port, u16 nat_src_port, ip6_address_t * dst_ip, u32 nat_dst_ip, u16 dst_port, u16 nat_dst_port, u32 vrf_id, int do_flush) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; snat_ipfix_per_thread_data_t *sitd = &silm->per_thread_data[thread_index]; flow_report_main_t *frm = &flow_report_main; vlib_frame_t *f; vlib_buffer_t *b0 = 0; u32 bi0 = ~0; u32 offset; vlib_main_t *vm = vlib_mains[thread_index]; u64 now; u16 template_id; now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); now += silm->milisecond_time_0; b0 = sitd->nat64_ses_buffer; if (PREDICT_FALSE (b0 == 0)) { if (do_flush) return; if (vlib_buffer_alloc (vm, &bi0, 1) != 1) { nat_elog_err ("can't allocate buffer for NAT IPFIX event"); return; } b0 = sitd->nat64_ses_buffer = vlib_get_buffer (vm, bi0); VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); offset = 0; } else { bi0 = vlib_get_buffer_index (vm, b0); offset = sitd->nat64_ses_next_record_offset; } f = sitd->nat64_ses_frame; if (PREDICT_FALSE (f == 0)) { u32 *to_next; f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); sitd->nat64_ses_frame = f; to_next = vlib_frame_vector_args (f); to_next[0] = bi0; f->n_vectors = 1; } if (PREDICT_FALSE (offset == 0)) snat_ipfix_header_create (frm, b0, &offset); if (PREDICT_TRUE (do_flush == 0)) { u64 time_stamp = clib_host_to_net_u64 (now); clib_memcpy_fast (b0->data + offset, &time_stamp, sizeof (time_stamp)); offset += sizeof (time_stamp); clib_memcpy_fast (b0->data + offset, &nat_event, sizeof (nat_event)); offset += sizeof (nat_event); clib_memcpy_fast (b0->data + offset, src_ip, sizeof (ip6_address_t)); offset += sizeof (ip6_address_t); clib_memcpy_fast (b0->data + offset, &nat_src_ip, sizeof (nat_src_ip)); offset += sizeof (nat_src_ip); clib_memcpy_fast (b0->data + offset, &proto, sizeof (proto)); offset += sizeof (proto); clib_memcpy_fast (b0->data + offset, &src_port, sizeof (src_port)); offset += sizeof (src_port); clib_memcpy_fast (b0->data + offset, &nat_src_port, sizeof (nat_src_port)); offset += sizeof (nat_src_port); clib_memcpy_fast (b0->data + offset, dst_ip, sizeof (ip6_address_t)); offset += sizeof (ip6_address_t); clib_memcpy_fast (b0->data + offset, &nat_dst_ip, sizeof (nat_dst_ip)); offset += sizeof (nat_dst_ip); clib_memcpy_fast (b0->data + offset, &dst_port, sizeof (dst_port)); offset += sizeof (dst_port); clib_memcpy_fast (b0->data + offset, &nat_dst_port, sizeof (nat_dst_port)); offset += sizeof (nat_dst_port); clib_memcpy_fast (b0->data + offset, &vrf_id, sizeof (vrf_id)); offset += sizeof (vrf_id); b0->current_length += NAT64_SES_LEN; } if (PREDICT_FALSE (do_flush || (offset + NAT64_SES_LEN) > frm->path_mtu)) { template_id = clib_atomic_fetch_or ( &silm->nat64_ses_template_id, 0); snat_ipfix_send (thread_index, frm, f, b0, template_id); sitd->nat64_ses_frame = 0; sitd->nat64_ses_buffer = 0; offset = 0; } sitd->nat64_ses_next_record_offset = offset; } void snat_ipfix_flush (u32 thread_index) { int do_flush = 1; snat_ipfix_logging_nat44_ses (thread_index, 0, 0, 0, 0, 0, 0, 0, do_flush); snat_ipfix_logging_addr_exhausted (thread_index, 0, do_flush); snat_ipfix_logging_max_entries_per_usr (thread_index, 0, 0, do_flush); nat_ipfix_logging_max_ses (thread_index, 0, do_flush); nat_ipfix_logging_max_bib (thread_index, 0, do_flush); nat_ipfix_logging_nat64_bibe (thread_index, 0, 0, 0, 0, 0, 0, 0, do_flush); nat_ipfix_logging_nat64_ses (thread_index, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, do_flush); } void snat_ipfix_flush_from_main (void) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; vlib_main_t *worker_vm; int i; if (PREDICT_TRUE (!clib_atomic_fetch_or(&silm->enabled, 0))) return; if (PREDICT_FALSE (!silm->worker_vms)) { for (i = 1; i < vec_len (vlib_mains); i++) { worker_vm = vlib_mains[i]; if (worker_vm) vec_add1 (silm->worker_vms, worker_vm); } } /* Trigger flush for each worker thread */ for (i = 0; i < vec_len (silm->worker_vms); i++) { worker_vm = silm->worker_vms[i]; if (worker_vm) vlib_node_set_interrupt_pending (worker_vm, snat_ipfix_flush_node.index); } /* Finally flush main thread */ snat_ipfix_flush (0); } /** * @brief Generate NAT44 session create event * * @param thread_index thread index * @param src_ip source IPv4 address * @param nat_src_ip transaltes source IPv4 address * @param nat_proto NAT transport protocol * @param src_port source port * @param nat_src_port translated source port * @param vrf_id VRF ID */ void snat_ipfix_logging_nat44_ses_create (u32 thread_index, u32 src_ip, u32 nat_src_ip, nat_protocol_t nat_proto, u16 src_port, u16 nat_src_port, u32 vrf_id) { skip_if_disabled (); snat_ipfix_logging_nat44_ses (thread_index, NAT44_SESSION_CREATE, src_ip, nat_src_ip, nat_proto, src_port, nat_src_port, vrf_id, 0); } /** * @brief Generate NAT44 session delete event * * @param thread_index thread index * @param src_ip source IPv4 address * @param nat_src_ip transaltes source IPv4 address * @param nat_proto NAT transport protocol * @param src_port source port * @param nat_src_port translated source port * @param vrf_id VRF ID */ void snat_ipfix_logging_nat44_ses_delete (u32 thread_index, u32 src_ip, u32 nat_src_ip, nat_protocol_t nat_proto, u16 src_port, u16 nat_src_port, u32 vrf_id) { skip_if_disabled (); snat_ipfix_logging_nat44_ses (thread_index, NAT44_SESSION_DELETE, src_ip, nat_src_ip, nat_proto, src_port, nat_src_port, vrf_id, 0); } /** * @brief Generate NAT addresses exhausted event * * @param thread_index thread index * @param pool_id NAT pool ID */ void snat_ipfix_logging_addresses_exhausted (u32 thread_index, u32 pool_id) { //TODO: This event SHOULD be rate limited skip_if_disabled (); snat_ipfix_logging_addr_exhausted (thread_index, pool_id, 0); } /** * @brief Generate maximum entries per user exceeded event * * @param thread_index thread index * @param limit maximum NAT entries that can be created per user * @param src_ip source IPv4 address */ void snat_ipfix_logging_max_entries_per_user (u32 thread_index, u32 limit, u32 src_ip) { //TODO: This event SHOULD be rate limited skip_if_disabled (); snat_ipfix_logging_max_entries_per_usr (thread_index, limit, src_ip, 0); } vlib_frame_t * deterministic_nat_data_callback (flow_report_main_t * frm, flow_report_t * fr, vlib_frame_t * f, u32 * to_next, u32 node_index) { snat_ipfix_flush_from_main(); return f; } /** * @brief Generate maximum session entries exceeded event * * @param thread_index thread index * @param limit configured limit */ void nat_ipfix_logging_max_sessions (u32 thread_index, u32 limit) { //TODO: This event SHOULD be rate limited skip_if_disabled (); nat_ipfix_logging_max_ses (thread_index, limit, 0); } /** * @brief Generate maximum BIB entries exceeded event * * @param thread_index thread index * @param limit configured limit */ void nat_ipfix_logging_max_bibs (u32 thread_index, u32 limit) { //TODO: This event SHOULD be rate limited skip_if_disabled (); nat_ipfix_logging_max_bib (thread_index, limit, 0); } /** * @brief Generate NAT64 BIB create and delete events * * @param thread_index thread index * @param src_ip source IPv6 address * @param nat_src_ip transaltes source IPv4 address * @param proto L4 protocol * @param src_port source port * @param nat_src_port translated source port * @param vrf_id VRF ID * @param is_create non-zero value if create event otherwise delete event */ void nat_ipfix_logging_nat64_bib (u32 thread_index, ip6_address_t * src_ip, ip4_address_t * nat_src_ip, u8 proto, u16 src_port, u16 nat_src_port, u32 vrf_id, u8 is_create) { u8 nat_event; skip_if_disabled (); nat_event = is_create ? NAT64_BIB_CREATE : NAT64_BIB_DELETE; nat_ipfix_logging_nat64_bibe (thread_index, nat_event, src_ip, nat_src_ip->as_u32, proto, src_port, nat_src_port, vrf_id, 0); } /** * @brief Generate NAT64 session create and delete events * * @param thread_index thread index * @param src_ip source IPv6 address * @param nat_src_ip transaltes source IPv4 address * @param proto L4 protocol * @param src_port source port * @param nat_src_port translated source port * @param dst_ip destination IPv6 address * @param nat_dst_ip destination IPv4 address * @param dst_port destination port * @param nat_dst_port translated destination port * @param vrf_id VRF ID * @param is_create non-zero value if create event otherwise delete event */ void nat_ipfix_logging_nat64_session (u32 thread_index, ip6_address_t * src_ip, ip4_address_t * nat_src_ip, u8 proto, u16 src_port, u16 nat_src_port, ip6_address_t * dst_ip, ip4_address_t * nat_dst_ip, u16 dst_port, u16 nat_dst_port, u32 vrf_id, u8 is_create) { u8 nat_event; skip_if_disabled (); nat_event = is_create ? NAT64_SESSION_CREATE : NAT64_SESSION_DELETE; nat_ipfix_logging_nat64_ses (thread_index, nat_event, src_ip, nat_src_ip->as_u32, proto, src_port, nat_src_port, dst_ip, nat_dst_ip->as_u32, dst_port, nat_dst_port, vrf_id, 0); } vlib_frame_t * data_callback (flow_report_main_t * frm, flow_report_t * fr, vlib_frame_t * f, u32 * to_next, u32 node_index) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; if (PREDICT_FALSE (++silm->call_counter >= vec_len (frm->reports))) { snat_ipfix_flush_from_main(); silm->call_counter = 0; } return f; } /** * @brief Enable/disable NAT plugin IPFIX logging * * @param enable 1 if enable, 0 if disable * @param domain_id observation domain ID * @param src_port source port number * * @returns 0 if success */ int snat_ipfix_logging_enable_disable (int enable, u32 domain_id, u16 src_port) { snat_main_t *sm = &snat_main; snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; flow_report_main_t *frm = &flow_report_main; vnet_flow_report_add_del_args_t a; int rv; u8 e = enable ? 1 : 0; if (clib_atomic_cmp_and_swap (&silm->enabled, e ^ 1, e) == e) return 0; clib_memset (&a, 0, sizeof (a)); a.is_add = enable; a.domain_id = domain_id ? domain_id : 1; a.src_port = src_port ? src_port : UDP_DST_PORT_ipfix; a.flow_data_callback = data_callback; if (sm->deterministic) { a.rewrite_callback = snat_template_rewrite_max_entries_per_usr; rv = vnet_flow_report_add_del (frm, &a, NULL); if (rv) { nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv); return -1; } } else { a.rewrite_callback = snat_template_rewrite_nat44_session; rv = vnet_flow_report_add_del (frm, &a, NULL); if (rv) { nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv); return -1; } a.rewrite_callback = snat_template_rewrite_addr_exhausted; rv = vnet_flow_report_add_del (frm, &a, NULL); if (rv) { nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv); return -1; } a.rewrite_callback = nat_template_rewrite_max_sessions; rv = vnet_flow_report_add_del (frm, &a, NULL); if (rv) { nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv); return -1; } a.rewrite_callback = nat_template_rewrite_max_bibs; rv = vnet_flow_report_add_del (frm, &a, NULL); if (rv) { nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv); return -1; } a.rewrite_callback = nat_template_rewrite_nat64_bib; rv = vnet_flow_report_add_del (frm, &a, NULL); if (rv) { nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv); return -1; } a.rewrite_callback = nat_template_rewrite_nat64_session; rv = vnet_flow_report_add_del (frm, &a, NULL); if (rv) { nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv); return -1; } if (sm->endpoint_dependent) { a.rewrite_callback = snat_template_rewrite_max_entries_per_usr; rv = vnet_flow_report_add_del (frm, &a, NULL); if (rv) { nat_elog_warn_X1 ("vnet_flow_report_add_del returned %d", "i4", rv); return -1; } } } return 0; } /** * @brief Initialize NAT plugin IPFIX logging * * @param vm vlib main */ void snat_ipfix_logging_init (vlib_main_t * vm) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; vlib_thread_main_t *tm = vlib_get_thread_main (); silm->enabled = 0; silm->worker_vms = 0; silm->call_counter = 0; /* Set up time reference pair */ silm->vlib_time_0 = vlib_time_now (vm); silm->milisecond_time_0 = unix_time_now_nsec () * 1e-6; vec_validate (silm->per_thread_data, tm->n_vlib_mains - 1); } static uword ipfix_flush_process (vlib_main_t *vm, vlib_node_runtime_t *rt, vlib_frame_t *f) { snat_ipfix_flush(vm->thread_index); return 0; } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (snat_ipfix_flush_node) = { .function = ipfix_flush_process, .name = "snat-ipfix-flush", .type = VLIB_NODE_TYPE_INPUT, .state = VLIB_NODE_STATE_INTERRUPT, }; /* *INDENT-ON* */