diff options
Diffstat (limited to 'src')
| -rwxr-xr-x | src/plugins/nat/in2out.c | 22 | ||||
| -rw-r--r-- | src/plugins/nat/nat64_db.c | 63 | ||||
| -rw-r--r-- | src/plugins/nat/nat64_db.h | 7 | ||||
| -rw-r--r-- | src/plugins/nat/nat_det.h | 3 | ||||
| -rw-r--r-- | src/plugins/nat/nat_ipfix_logging.c | 1197 | ||||
| -rw-r--r-- | src/plugins/nat/nat_ipfix_logging.h | 51 | ||||
| -rw-r--r-- | src/plugins/nat/nat_reass.c | 17 | ||||
| -rw-r--r-- | src/vnet/flow/ipfix_info_elements.h | 6 |
8 files changed, 1342 insertions, 24 deletions
diff --git a/src/plugins/nat/in2out.c b/src/plugins/nat/in2out.c index b0dbbc8fa11..5f2f43f7f81 100755 --- a/src/plugins/nat/in2out.c +++ b/src/plugins/nat/in2out.c @@ -162,7 +162,7 @@ typedef enum { /** * @brief Check if packet should be translated * - * Packets aimed at outside interface and external addresss with active session + * Packets aimed at outside interface and external address with active session * should be translated. * * @param sm NAT main @@ -273,6 +273,7 @@ static u32 slow_path (snat_main_t *sm, vlib_buffer_t *b0, if (PREDICT_FALSE (maximum_sessions_exceeded(sm, thread_index))) { b0->error = node->errors[SNAT_IN2OUT_ERROR_MAX_SESSIONS_EXCEEDED]; + nat_ipfix_logging_max_sessions(sm->max_translations); return SNAT_IN2OUT_NEXT_DROP; } @@ -294,13 +295,6 @@ static u32 slow_path (snat_main_t *sm, vlib_buffer_t *b0, return SNAT_IN2OUT_NEXT_DROP; } - s = nat_session_alloc_or_recycle (sm, u, thread_index); - if (!s) - { - clib_warning ("create NAT session failed"); - return SNAT_IN2OUT_NEXT_DROP; - } - /* First try to match static mapping by local address and port */ if (snat_static_mapping_match (sm, *key0, &key1, 0, 0, 0)) { @@ -319,9 +313,17 @@ static u32 slow_path (snat_main_t *sm, vlib_buffer_t *b0, else { u->nstaticsessions++; - s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING; } + s = nat_session_alloc_or_recycle (sm, u, thread_index); + if (!s) + { + clib_warning ("create NAT session failed"); + return SNAT_IN2OUT_NEXT_DROP; + } + + if (address_index == ~0) + s->flags |= SNAT_SESSION_FLAG_STATIC_MAPPING; s->outside_address_index = address_index; s->in2out = *key0; s->out2in = key1; @@ -1002,6 +1004,7 @@ snat_in2out_unknown_proto (snat_main_t *sm, if (PREDICT_FALSE (maximum_sessions_exceeded(sm, thread_index))) { b->error = node->errors[SNAT_IN2OUT_ERROR_MAX_SESSIONS_EXCEEDED]; + nat_ipfix_logging_max_sessions(sm->max_translations); return 0; } @@ -1189,6 +1192,7 @@ snat_in2out_lb (snat_main_t *sm, if (PREDICT_FALSE (maximum_sessions_exceeded (sm, thread_index))) { b->error = node->errors[SNAT_IN2OUT_ERROR_MAX_SESSIONS_EXCEEDED]; + nat_ipfix_logging_max_sessions(sm->max_translations); return 0; } diff --git a/src/plugins/nat/nat64_db.c b/src/plugins/nat/nat64_db.c index 7ce28bc6c7f..3edc1a43006 100644 --- a/src/plugins/nat/nat64_db.c +++ b/src/plugins/nat/nat64_db.c @@ -17,6 +17,8 @@ * @brief NAT64 DB */ #include <nat/nat64_db.h> +#include <nat/nat_ipfix_logging.h> +#include <vnet/fib/fib_table.h> int nat64_db_init (nat64_db_t * db, u32 bib_buckets, u32 bib_memory_size, @@ -36,6 +38,12 @@ nat64_db_init (nat64_db_t * db, u32 bib_buckets, u32 bib_memory_size, st_memory_size); db->free_addr_port_cb = free_addr_port_cb; + db->bib.limit = 10 * bib_buckets; + db->bib.bib_entries_num = 0; + db->st.limit = 10 * st_buckets; + db->st.st_entries_num = 0; + db->addr_free = 0; + return 0; } @@ -48,6 +56,14 @@ nat64_db_bib_entry_create (nat64_db_t * db, ip6_address_t * in_addr, nat64_db_bib_entry_t *bibe; nat64_db_bib_entry_key_t bibe_key; clib_bihash_kv_24_8_t kv; + fib_table_t *fib; + + if (db->bib.bib_entries_num >= db->bib.limit) + { + db->free_addr_port_cb (db, out_addr, out_port, proto); + nat_ipfix_logging_max_bibs (db->bib.limit); + return 0; + } /* create pool entry */ switch (ip_proto_to_snat_proto (proto)) @@ -66,6 +82,9 @@ nat64_db_bib_entry_create (nat64_db_t * db, ip6_address_t * in_addr, kv.value = bibe - db->bib._unk_proto_bib; break; } + + db->bib.bib_entries_num++; + memset (bibe, 0, sizeof (*bibe)); bibe->in_addr.as_u64[0] = in_addr->as_u64[0]; bibe->in_addr.as_u64[1] = in_addr->as_u64[1]; @@ -97,6 +116,9 @@ nat64_db_bib_entry_create (nat64_db_t * db, ip6_address_t * in_addr, kv.key[2] = bibe_key.as_u64[2]; clib_bihash_add_del_24_8 (&db->bib.out2in, &kv, 1); + fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6); + nat_ipfix_logging_nat64_bib (in_addr, out_addr, proto, in_port, out_port, + fib->ft_table_id, 1); return bibe; } @@ -108,6 +130,7 @@ nat64_db_bib_entry_free (nat64_db_t * db, nat64_db_bib_entry_t * bibe) nat64_db_bib_entry_t *bib; u32 *ste_to_be_free = 0, *ste_index, bibe_index; nat64_db_st_entry_t *st, *ste; + fib_table_t *fib; switch (ip_proto_to_snat_proto (bibe->proto)) { @@ -126,6 +149,8 @@ nat64_db_bib_entry_free (nat64_db_t * db, nat64_db_bib_entry_t * bibe) break; } + db->bib.bib_entries_num--; + bibe_index = bibe - bib; /* delete ST entries for static BIB entry */ @@ -162,7 +187,14 @@ nat64_db_bib_entry_free (nat64_db_t * db, nat64_db_bib_entry_t * bibe) kv.key[2] = bibe_key.as_u64[2]; clib_bihash_add_del_24_8 (&db->bib.out2in, &kv, 0); - db->free_addr_port_cb (db, &bibe->out_addr, bibe->out_port, bibe->proto); + if (!db->addr_free) + db->free_addr_port_cb (db, &bibe->out_addr, bibe->out_port, bibe->proto); + + fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6); + nat_ipfix_logging_nat64_bib (&bibe->in_addr, &bibe->out_addr, bibe->proto, + bibe->in_port, bibe->out_port, + fib->ft_table_id, 0); + /* delete from pool */ pool_put (bib, bibe); @@ -344,6 +376,13 @@ nat64_db_st_entry_create (nat64_db_t * db, nat64_db_bib_entry_t * bibe, nat64_db_bib_entry_t *bib; nat64_db_st_entry_key_t ste_key; clib_bihash_kv_48_8_t kv; + fib_table_t *fib; + + if (db->st.st_entries_num >= db->st.limit) + { + nat_ipfix_logging_max_sessions (db->st.limit); + return 0; + } /* create pool entry */ switch (ip_proto_to_snat_proto (bibe->proto)) @@ -364,6 +403,9 @@ nat64_db_st_entry_create (nat64_db_t * db, nat64_db_bib_entry_t * bibe, bib = db->bib._unk_proto_bib; break; } + + db->st.st_entries_num++; + memset (ste, 0, sizeof (*ste)); ste->in_r_addr.as_u64[0] = in_r_addr->as_u64[0]; ste->in_r_addr.as_u64[1] = in_r_addr->as_u64[1]; @@ -407,6 +449,13 @@ nat64_db_st_entry_create (nat64_db_t * db, nat64_db_bib_entry_t * bibe, kv.key[5] = ste_key.as_u64[5]; clib_bihash_add_del_48_8 (&db->st.out2in, &kv, 1); + fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6); + nat_ipfix_logging_nat64_session (&bibe->in_addr, &bibe->out_addr, + bibe->proto, bibe->in_port, bibe->out_port, + &ste->in_r_addr, &ste->out_r_addr, + ste->r_port, ste->r_port, fib->ft_table_id, + 1); + return ste; } @@ -417,6 +466,7 @@ nat64_db_st_entry_free (nat64_db_t * db, nat64_db_st_entry_t * ste) nat64_db_bib_entry_t *bib, *bibe; nat64_db_st_entry_key_t ste_key; clib_bihash_kv_48_8_t kv; + fib_table_t *fib; switch (ip_proto_to_snat_proto (ste->proto)) { @@ -437,6 +487,8 @@ nat64_db_st_entry_free (nat64_db_t * db, nat64_db_st_entry_t * ste) bibe = pool_elt_at_index (bib, ste->bibe_index); + db->st.st_entries_num--; + /* delete hash lookup */ memset (&ste_key, 0, sizeof (ste_key)); ste_key.l_addr.as_u64[0] = bibe->in_addr.as_u64[0]; @@ -469,6 +521,13 @@ nat64_db_st_entry_free (nat64_db_t * db, nat64_db_st_entry_t * ste) kv.key[5] = ste_key.as_u64[5]; clib_bihash_add_del_48_8 (&db->st.out2in, &kv, 0); + fib = fib_table_get (bibe->fib_index, FIB_PROTOCOL_IP6); + nat_ipfix_logging_nat64_session (&bibe->in_addr, &bibe->out_addr, + bibe->proto, bibe->in_port, bibe->out_port, + &ste->in_r_addr, &ste->out_r_addr, + ste->r_port, ste->r_port, fib->ft_table_id, + 0); + /* delete from pool */ pool_put (st, ste); @@ -613,6 +672,7 @@ nat64_db_free_out_addr (nat64_db_t * db, ip4_address_t * out_addr) nat64_db_st_entry_t *st, *ste; nat64_db_bib_entry_t *bibe; + db->addr_free = 1; /* *INDENT-OFF* */ #define _(N, i, n, s) \ st = db->st._##n##_st; \ @@ -636,6 +696,7 @@ nat64_db_free_out_addr (nat64_db_t * db, ip4_address_t * out_addr) vec_foreach (ste_index, ste_to_be_free) nat64_db_st_entry_free (db, pool_elt_at_index(st, ste_index[0])); vec_free (ste_to_be_free); + db->addr_free = 0; /* *INDENT-ON* */ } diff --git a/src/plugins/nat/nat64_db.h b/src/plugins/nat/nat64_db.h index 4345fd30974..f1b93cf8928 100644 --- a/src/plugins/nat/nat64_db.h +++ b/src/plugins/nat/nat64_db.h @@ -68,6 +68,9 @@ typedef struct /* BIB lookup */ clib_bihash_24_8_t in2out; clib_bihash_24_8_t out2in; + + u32 limit; + u32 bib_entries_num; } nat64_db_bib_t; typedef struct @@ -115,6 +118,9 @@ typedef struct /* session lookup */ clib_bihash_48_8_t in2out; clib_bihash_48_8_t out2in; + + u32 limit; + u32 st_entries_num; } nat64_db_st_t; struct nat64_db_s; @@ -132,6 +138,7 @@ typedef struct nat64_db_s nat64_db_bib_t bib; nat64_db_st_t st; nat64_db_free_addr_port_function_t free_addr_port_cb; + u8 addr_free; } nat64_db_t; /** diff --git a/src/plugins/nat/nat_det.h b/src/plugins/nat/nat_det.h index 2ab7f27eece..ce876bca9fb 100644 --- a/src/plugins/nat/nat_det.h +++ b/src/plugins/nat/nat_det.h @@ -171,7 +171,8 @@ snat_det_ses_create (snat_det_map_t * dm, ip4_address_t * in_addr, } } - snat_ipfix_logging_max_entries_per_user (in_addr->as_u32); + snat_ipfix_logging_max_entries_per_user (SNAT_DET_SES_PER_USER, + in_addr->as_u32); return 0; } diff --git a/src/plugins/nat/nat_ipfix_logging.c b/src/plugins/nat/nat_ipfix_logging.c index 18430f5a7b8..ef1ab859d8d 100644 --- a/src/plugins/nat/nat_ipfix_logging.c +++ b/src/plugins/nat/nat_ipfix_logging.c @@ -17,18 +17,28 @@ #include <vnet/flow/flow_report.h> #include <vlibmemory/api.h> -#include <nat/nat.h> #include <nat/nat_ipfix_logging.h> 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 17 +#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 4 +#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 { @@ -48,9 +58,58 @@ typedef struct 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; \ @@ -105,6 +164,16 @@ snat_template_rewrite (flow_report_main_t * frm, field_count = NAT44_SESSION_CREATE_FIELD_COUNT; silm->nat44_session_template_id = fr->template_id; } + else if (event == NAT64_BIB_CREATE) + { + field_count = NAT64_BIB_FIELD_COUNT; + silm->nat64_bib_template_id = fr->template_id; + } + else if (event == NAT64_SESSION_CREATE) + { + field_count = NAT64_SES_FIELD_COUNT; + silm->nat64_ses_template_id = fr->template_id; + } else if (event == QUOTA_EXCEEDED) { if (quota_event == MAX_ENTRIES_PER_USER) @@ -112,6 +181,26 @@ snat_template_rewrite (flow_report_main_t * frm, field_count = MAX_ENTRIES_PER_USER_FIELD_COUNT; silm->max_entries_per_user_template_id = fr->template_id; } + else if (quota_event == MAX_SESSION_ENTRIES) + { + field_count = MAX_SESSIONS_FIELD_COUNT; + silm->max_sessions_template_id = fr->template_id; + } + else if (quota_event == MAX_BIB_ENTRIES) + { + field_count = MAX_BIBS_FIELD_COUNT; + silm->max_bibs_template_id = fr->template_id; + } + else if (quota_event == MAX_FRAGMENTS_PENDING_REASSEMBLY) + { + field_count = MAX_FRAGMENTS_FIELD_COUNT; + silm->max_frags_ip4_template_id = fr->template_id; + } + else if (quota_event == MAX_FRAGMENTS_PENDING_REASSEMBLY_IP6) + { + field_count = MAX_FRAGMENTS_FIELD_COUNT; + silm->max_frags_ip6_template_id = fr->template_id; + } } /* allocate rewrite space */ @@ -169,6 +258,53 @@ snat_template_rewrite (flow_report_main_t * frm, 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) @@ -180,9 +316,65 @@ snat_template_rewrite (flow_report_main_t * frm, 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++; + } + else if (quota_event == MAX_FRAGMENTS_PENDING_REASSEMBLY) + { + 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, maxFragmentsPendingReassembly, + 4); + f++; + f->e_id_length = ipfix_e_id_length (0, sourceIPv4Address, 4); + f++; + } + else if (quota_event == MAX_FRAGMENTS_PENDING_REASSEMBLY_IP6) + { + 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, maxFragmentsPendingReassembly, + 4); + f++; + f->e_id_length = ipfix_e_id_length (0, sourceIPv6Address, 16); + f++; + } } /* Back to the template packet... */ @@ -240,6 +432,76 @@ snat_template_rewrite_max_entries_per_usr (flow_report_main_t * frm, 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) +{ + 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) +{ + return snat_template_rewrite (frm, fr, collector_address, src_address, + collector_port, QUOTA_EXCEEDED, + MAX_BIB_ENTRIES); +} + +u8 * +nat_template_rewrite_max_frags_ip4 (flow_report_main_t * frm, + flow_report_t * fr, + ip4_address_t * collector_address, + ip4_address_t * src_address, + u16 collector_port) +{ + return snat_template_rewrite (frm, fr, collector_address, src_address, + collector_port, QUOTA_EXCEEDED, + MAX_FRAGMENTS_PENDING_REASSEMBLY); +} + +u8 * +nat_template_rewrite_max_frags_ip6 (flow_report_main_t * frm, + flow_report_t * fr, + ip4_address_t * collector_address, + ip4_address_t * src_address, + u16 collector_port) +{ + return snat_template_rewrite (frm, fr, collector_address, src_address, + collector_port, QUOTA_EXCEEDED, + MAX_FRAGMENTS_PENDING_REASSEMBLY_IP6); +} + +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) +{ + 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) +{ + 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) @@ -518,7 +780,7 @@ snat_ipfix_logging_addr_exhausted (u32 pool_id, int do_flush) } static void -snat_ipfix_logging_max_entries_per_usr (u32 src_ip, int do_flush) +snat_ipfix_logging_max_entries_per_usr (u32 limit, u32 src_ip, int do_flush) { snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; flow_report_main_t *frm = &flow_report_main; @@ -590,6 +852,9 @@ snat_ipfix_logging_max_entries_per_usr (u32 src_ip, int do_flush) clib_memcpy (b0->data + offset, "a_event, sizeof (quota_event)); offset += sizeof (quota_event); + clib_memcpy (b0->data + offset, &limit, sizeof (limit)); + offset += sizeof (limit); + clib_memcpy (b0->data + offset, &src_ip, sizeof (src_ip)); offset += sizeof (src_ip); @@ -608,6 +873,590 @@ snat_ipfix_logging_max_entries_per_usr (u32 src_ip, int do_flush) } static void +nat_ipfix_logging_max_ses (u32 limit, int do_flush) +{ + snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; + 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 = frm->vlib_main; + u64 now; + vlib_buffer_free_list_t *fl; + u8 nat_event = QUOTA_EXCEEDED; + u32 quota_event = MAX_SESSION_ENTRIES; + + if (!silm->enabled) + return; + + now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); + now += silm->milisecond_time_0; + + b0 = silm->max_sessions_buffer; + + if (PREDICT_FALSE (b0 == 0)) + { + if (do_flush) + return; + + if (vlib_buffer_alloc (vm, &bi0, 1) != 1) + { + clib_warning ("can't allocate buffer for NAT IPFIX event"); + return; + } + + b0 = silm->max_sessions_buffer = vlib_get_buffer (vm, bi0); + fl = + vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX); + vlib_buffer_init_for_free_list (b0, fl); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); + offset = 0; + } + else + { + bi0 = vlib_get_buffer_index (vm, b0); + offset = silm->max_sessions_next_record_offset; + } + + f = silm->max_sessions_frame; + if (PREDICT_FALSE (f == 0)) + { + u32 *to_next; + f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); + silm->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 (b0->data + offset, &time_stamp, sizeof (time_stamp)); + offset += sizeof (time_stamp); + + clib_memcpy (b0->data + offset, &nat_event, sizeof (nat_event)); + offset += sizeof (nat_event); + + clib_memcpy (b0->data + offset, "a_event, sizeof (quota_event)); + offset += sizeof (quota_event); + + clib_memcpy (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)) + { + snat_ipfix_send (frm, f, b0, silm->max_sessions_template_id); + silm->max_sessions_frame = 0; + silm->max_sessions_buffer = 0; + offset = 0; + } + silm->max_sessions_next_record_offset = offset; +} + +static void +nat_ipfix_logging_max_bib (u32 limit, int do_flush) +{ + snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; + 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 = frm->vlib_main; + u64 now; + vlib_buffer_free_list_t *fl; + u8 nat_event = QUOTA_EXCEEDED; + u32 quota_event = MAX_BIB_ENTRIES; + + if (!silm->enabled) + return; + + now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); + now += silm->milisecond_time_0; + + b0 = silm->max_bibs_buffer; + + if (PREDICT_FALSE (b0 == 0)) + { + if (do_flush) + return; + + if (vlib_buffer_alloc (vm, &bi0, 1) != 1) + { + clib_warning ("can't allocate buffer for NAT IPFIX event"); + return; + } + + b0 = silm->max_bibs_buffer = vlib_get_buffer (vm, bi0); + fl = + vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX); + vlib_buffer_init_for_free_list (b0, fl); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); + offset = 0; + } + else + { + bi0 = vlib_get_buffer_index (vm, b0); + offset = silm->max_bibs_next_record_offset; + } + + f = silm->max_bibs_frame; + if (PREDICT_FALSE (f == 0)) + { + u32 *to_next; + f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); + silm->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 (b0->data + offset, &time_stamp, sizeof (time_stamp)); + offset += sizeof (time_stamp); + + clib_memcpy (b0->data + offset, &nat_event, sizeof (nat_event)); + offset += sizeof (nat_event); + + clib_memcpy (b0->data + offset, "a_event, sizeof (quota_event)); + offset += sizeof (quota_event); + + clib_memcpy (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)) + { + snat_ipfix_send (frm, f, b0, silm->max_bibs_template_id); + silm->max_bibs_frame = 0; + silm->max_bibs_buffer = 0; + offset = 0; + } + silm->max_bibs_next_record_offset = offset; +} + +static void +nat_ipfix_logging_max_frag_ip4 (u32 limit, u32 src, int do_flush) +{ + snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; + 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 = frm->vlib_main; + u64 now; + vlib_buffer_free_list_t *fl; + u8 nat_event = QUOTA_EXCEEDED; + u32 quota_event = MAX_FRAGMENTS_PENDING_REASSEMBLY; + + if (!silm->enabled) + return; + + now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); + now += silm->milisecond_time_0; + + b0 = silm->max_frags_ip4_buffer; + + if (PREDICT_FALSE (b0 == 0)) + { + if (do_flush) + return; + + if (vlib_buffer_alloc (vm, &bi0, 1) != 1) + { + clib_warning ("can't allocate buffer for NAT IPFIX event"); + return; + } + + b0 = silm->max_frags_ip4_buffer = vlib_get_buffer (vm, bi0); + fl = + vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX); + vlib_buffer_init_for_free_list (b0, fl); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); + offset = 0; + } + else + { + bi0 = vlib_get_buffer_index (vm, b0); + offset = silm->max_frags_ip4_next_record_offset; + } + + f = silm->max_frags_ip4_frame; + if (PREDICT_FALSE (f == 0)) + { + u32 *to_next; + f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); + silm->max_frags_ip4_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 (b0->data + offset, &time_stamp, sizeof (time_stamp)); + offset += sizeof (time_stamp); + + clib_memcpy (b0->data + offset, &nat_event, sizeof (nat_event)); + offset += sizeof (nat_event); + + clib_memcpy (b0->data + offset, "a_event, sizeof (quota_event)); + offset += sizeof (quota_event); + + clib_memcpy (b0->data + offset, &limit, sizeof (limit)); + offset += sizeof (limit); + + clib_memcpy (b0->data + offset, &src, sizeof (src)); + offset += sizeof (src); + + b0->current_length += MAX_FRAGMENTS_IP4_LEN; + } + + if (PREDICT_FALSE + (do_flush || (offset + MAX_BIBS_LEN) > frm->path_mtu)) + { + snat_ipfix_send (frm, f, b0, silm->max_frags_ip4_template_id); + silm->max_frags_ip4_frame = 0; + silm->max_frags_ip4_buffer = 0; + offset = 0; + } + silm->max_frags_ip4_next_record_offset = offset; +} + +static void +nat_ipfix_logging_max_frag_ip6 (u32 limit, ip6_address_t * src, int do_flush) +{ + snat_ipfix_logging_main_t *silm = &snat_ipfix_logging_main; + 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 = frm->vlib_main; + u64 now; + vlib_buffer_free_list_t *fl; + u8 nat_event = QUOTA_EXCEEDED; + u32 quota_event = MAX_FRAGMENTS_PENDING_REASSEMBLY; + + if (!silm->enabled) + return; + + now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); + now += silm->milisecond_time_0; + + b0 = silm->max_frags_ip6_buffer; + + if (PREDICT_FALSE (b0 == 0)) + { + if (do_flush) + return; + + if (vlib_buffer_alloc (vm, &bi0, 1) != 1) + { + clib_warning ("can't allocate buffer for NAT IPFIX event"); + return; + } + + b0 = silm->max_frags_ip6_buffer = vlib_get_buffer (vm, bi0); + fl = + vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX); + vlib_buffer_init_for_free_list (b0, fl); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); + offset = 0; + } + else + { + bi0 = vlib_get_buffer_index (vm, b0); + offset = silm->max_frags_ip6_next_record_offset; + } + + f = silm->max_frags_ip6_frame; + if (PREDICT_FALSE (f == 0)) + { + u32 *to_next; + f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); + silm->max_frags_ip6_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 (b0->data + offset, &time_stamp, sizeof (time_stamp)); + offset += sizeof (time_stamp); + + clib_memcpy (b0->data + offset, &nat_event, sizeof (nat_event)); + offset += sizeof (nat_event); + + clib_memcpy (b0->data + offset, "a_event, sizeof (quota_event)); + offset += sizeof (quota_event); + + clib_memcpy (b0->data + offset, &limit, sizeof (limit)); + offset += sizeof (limit); + + clib_memcpy (b0->data + offset, src, sizeof (ip6_address_t)); + offset += sizeof (ip6_address_t); + + b0->current_length += MAX_FRAGMENTS_IP6_LEN; + } + + if (PREDICT_FALSE + (do_flush || (offset + MAX_BIBS_LEN) > frm->path_mtu)) + { + snat_ipfix_send (frm, f, b0, silm->max_frags_ip6_template_id); + silm->max_frags_ip6_frame = 0; + silm->max_frags_ip6_buffer = 0; + offset = 0; + } + silm->max_frags_ip6_next_record_offset = offset; +} + +static void +nat_ipfix_logging_nat64_bibe (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; + 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 = frm->vlib_main; + u64 now; + vlib_buffer_free_list_t *fl; + + if (!silm->enabled) + return; + + now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); + now += silm->milisecond_time_0; + + b0 = silm->nat64_bib_buffer; + + if (PREDICT_FALSE (b0 == 0)) + { + if (do_flush) + return; + + if (vlib_buffer_alloc (vm, &bi0, 1) != 1) + { + clib_warning ("can't allocate buffer for NAT IPFIX event"); + return; + } + + b0 = silm->nat64_bib_buffer = vlib_get_buffer (vm, bi0); + fl = + vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX); + vlib_buffer_init_for_free_list (b0, fl); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); + offset = 0; + } + else + { + bi0 = vlib_get_buffer_index (vm, b0); + offset = silm->nat64_bib_next_record_offset; + } + + f = silm->nat64_bib_frame; + if (PREDICT_FALSE (f == 0)) + { + u32 *to_next; + f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); + silm->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 (b0->data + offset, &time_stamp, sizeof (time_stamp)); + offset += sizeof (time_stamp); + + clib_memcpy (b0->data + offset, &nat_event, sizeof (nat_event)); + offset += sizeof (nat_event); + + clib_memcpy (b0->data + offset, src_ip, sizeof (ip6_address_t)); + offset += sizeof (ip6_address_t); + + clib_memcpy (b0->data + offset, &nat_src_ip, sizeof (nat_src_ip)); + offset += sizeof (nat_src_ip); + + clib_memcpy (b0->data + offset, &proto, sizeof (proto)); + offset += sizeof (proto); + + clib_memcpy (b0->data + offset, &src_port, sizeof (src_port)); + offset += sizeof (src_port); + + clib_memcpy (b0->data + offset, &nat_src_port, sizeof (nat_src_port)); + offset += sizeof (nat_src_port); + + clib_memcpy (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)) + { + snat_ipfix_send (frm, f, b0, silm->nat64_bib_template_id); + silm->nat64_bib_frame = 0; + silm->nat64_bib_buffer = 0; + offset = 0; + } + silm->nat64_bib_next_record_offset = offset; +} + +static void +nat_ipfix_logging_nat64_ses (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; + 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 = frm->vlib_main; + u64 now; + vlib_buffer_free_list_t *fl; + + if (!silm->enabled) + return; + + now = (u64) ((vlib_time_now (vm) - silm->vlib_time_0) * 1e3); + now += silm->milisecond_time_0; + + b0 = silm->nat64_ses_buffer; + + if (PREDICT_FALSE (b0 == 0)) + { + if (do_flush) + return; + + if (vlib_buffer_alloc (vm, &bi0, 1) != 1) + { + clib_warning ("can't allocate buffer for NAT IPFIX event"); + return; + } + + b0 = silm->nat64_ses_buffer = vlib_get_buffer (vm, bi0); + fl = + vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX); + vlib_buffer_init_for_free_list (b0, fl); + VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0); + offset = 0; + } + else + { + bi0 = vlib_get_buffer_index (vm, b0); + offset = silm->nat64_ses_next_record_offset; + } + + f = silm->nat64_ses_frame; + if (PREDICT_FALSE (f == 0)) + { + u32 *to_next; + f = vlib_get_frame_to_node (vm, ip4_lookup_node.index); + silm->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 (b0->data + offset, &time_stamp, sizeof (time_stamp)); + offset += sizeof (time_stamp); + + clib_memcpy (b0->data + offset, &nat_event, sizeof (nat_event)); + offset += sizeof (nat_event); + + clib_memcpy (b0->data + offset, src_ip, sizeof (ip6_address_t)); + offset += sizeof (ip6_address_t); + + clib_memcpy (b0->data + offset, &nat_src_ip, sizeof (nat_src_ip)); + offset += sizeof (nat_src_ip); + + clib_memcpy (b0->data + offset, &proto, sizeof (proto)); + offset += sizeof (proto); + + clib_memcpy (b0->data + offset, &src_port, sizeof (src_port)); + offset += sizeof (src_port); + + clib_memcpy (b0->data + offset, &nat_src_port, sizeof (nat_src_port)); + offset += sizeof (nat_src_port); + + clib_memcpy (b0->data + offset, dst_ip, sizeof (ip6_address_t)); + offset += sizeof (ip6_address_t); + + clib_memcpy (b0->data + offset, &nat_dst_ip, sizeof (nat_dst_ip)); + offset += sizeof (nat_dst_ip); + + clib_memcpy (b0->data + offset, &dst_port, sizeof (dst_port)); + offset += sizeof (dst_port); + + clib_memcpy (b0->data + offset, &nat_dst_port, sizeof (nat_dst_port)); + offset += sizeof (nat_dst_port); + + clib_memcpy (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)) + { + snat_ipfix_send (frm, f, b0, silm->nat64_ses_template_id); + silm->nat64_ses_frame = 0; + silm->nat64_ses_buffer = 0; + offset = 0; + } + silm->nat64_ses_next_record_offset = offset; +} + +static void snat_ipfix_logging_nat44_ses_rpc_cb (snat_ipfix_logging_nat44_ses_args_t * a) { snat_ipfix_logging_nat44_ses (a->nat_event, a->src_ip, a->nat_src_ip, @@ -731,22 +1580,24 @@ static void snat_ipfix_logging_max_entries_per_usr_rpc_cb (snat_ipfix_logging_max_entries_per_user_args_t * a) { - snat_ipfix_logging_max_entries_per_usr (a->src_ip, 0); + snat_ipfix_logging_max_entries_per_usr (a->limit, a->src_ip, 0); } /** * @brief Generate maximum entries per user exceeded event * + * @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 src_ip) +snat_ipfix_logging_max_entries_per_user (u32 limit, u32 src_ip) { //TODO: This event SHOULD be rate limited snat_ipfix_logging_max_entries_per_user_args_t a; skip_if_disabled (); + a.limit = limit; a.src_ip = src_ip; vl_api_rpc_call_main_thread (snat_ipfix_logging_max_entries_per_usr_rpc_cb, @@ -759,7 +1610,279 @@ snat_data_callback_max_entries_per_usr (flow_report_main_t * frm, vlib_frame_t * f, u32 * to_next, u32 node_index) { - snat_ipfix_logging_max_entries_per_usr (0, 1); + snat_ipfix_logging_max_entries_per_usr (0, 0, 1); + return f; +} + +static void +nat_ipfix_logging_max_ses_rpc_cb (nat_ipfix_logging_max_sessions_args_t * a) +{ + nat_ipfix_logging_max_ses (a->limit, 0); +} + +/** + * @brief Generate maximum session entries exceeded event + * + * @param limit configured limit + */ +void +nat_ipfix_logging_max_sessions (u32 limit) +{ + //TODO: This event SHOULD be rate limited + nat_ipfix_logging_max_sessions_args_t a; + + skip_if_disabled (); + + a.limit = limit; + + vl_api_rpc_call_main_thread (nat_ipfix_logging_max_ses_rpc_cb, + (u8 *) & a, sizeof (a)); +} + +vlib_frame_t * +nat_data_callback_max_sessions (flow_report_main_t * frm, + flow_report_t * fr, + vlib_frame_t * f, + u32 * to_next, u32 node_index) +{ + nat_ipfix_logging_max_ses (0, 1); + return f; +} + +static void +nat_ipfix_logging_max_bib_rpc_cb (nat_ipfix_logging_max_bibs_args_t * a) +{ + nat_ipfix_logging_max_bib (a->limit, 0); +} + +/** + * @brief Generate maximum BIB entries exceeded event + * + * @param limit configured limit + */ +void +nat_ipfix_logging_max_bibs (u32 limit) +{ + //TODO: This event SHOULD be rate limited + nat_ipfix_logging_max_bibs_args_t a; + + skip_if_disabled (); + + a.limit = limit; + + vl_api_rpc_call_main_thread (nat_ipfix_logging_max_bib_rpc_cb, + (u8 *) & a, sizeof (a)); +} + +vlib_frame_t * +nat_data_callback_max_bibs (flow_report_main_t * frm, + flow_report_t * fr, + vlib_frame_t * f, + u32 * to_next, u32 node_index) +{ + nat_ipfix_logging_max_bib (0, 1); + return f; +} + +static void +nat_ipfix_logging_max_frag_ip4_rpc_cb (nat_ipfix_logging_max_frags_ip4_args_t * a) +{ + nat_ipfix_logging_max_frag_ip4 (a->limit, a->src, 0); +} + +/** + * @brief Generate maximum IPv4 fragments pending reassembly exceeded event + * + * @param limit configured limit + * @param src source IPv4 address + */ +void +nat_ipfix_logging_max_fragments_ip4 (u32 limit, ip4_address_t * src) +{ + //TODO: This event SHOULD be rate limited + nat_ipfix_logging_max_frags_ip4_args_t a; + + skip_if_disabled (); + + a.limit = limit; + a.src = src->as_u32; + + vl_api_rpc_call_main_thread (nat_ipfix_logging_max_frag_ip4_rpc_cb, + (u8 *) & a, sizeof (a)); +} + +vlib_frame_t * +nat_data_callback_max_frags_ip4 (flow_report_main_t * frm, + flow_report_t * fr, + vlib_frame_t * f, + u32 * to_next, u32 node_index) +{ + nat_ipfix_logging_max_frag_ip4 (0, 0, 1); + return f; +} + +static void +nat_ipfix_logging_max_frag_ip6_rpc_cb (nat_ipfix_logging_max_frags_ip6_args_t * a) +{ + ip6_address_t src; + src.as_u64[0] = a->src[0]; + src.as_u64[1] = a->src[1]; + nat_ipfix_logging_max_frag_ip6 (a->limit, &src, 0); +} + +/** + * @brief Generate maximum IPv6 fragments pending reassembly exceeded event + * + * @param limit configured limit + * @param src source IPv6 address + */ +void +nat_ipfix_logging_max_fragments_ip6 (u32 limit, ip6_address_t * src) +{ + //TODO: This event SHOULD be rate limited + nat_ipfix_logging_max_frags_ip6_args_t a; + + skip_if_disabled (); + + a.limit = limit; + a.src[0] = src->as_u64[0]; + a.src[1] = src->as_u64[1]; + + vl_api_rpc_call_main_thread (nat_ipfix_logging_max_frag_ip6_rpc_cb, + (u8 *) & a, sizeof (a)); +} + +vlib_frame_t * +nat_data_callback_max_frags_ip6 (flow_report_main_t * frm, + flow_report_t * fr, + vlib_frame_t * f, + u32 * to_next, u32 node_index) +{ + nat_ipfix_logging_max_frag_ip6 (0, 0, 1); + return f; +} + +static void +nat_ipfix_logging_nat64_bib_rpc_cb (nat_ipfix_logging_nat64_bib_args_t * a) +{ + ip6_address_t src_ip; + src_ip.as_u64[0] = a->src_ip[0]; + src_ip.as_u64[1] = a->src_ip[1]; + nat_ipfix_logging_nat64_bibe (a->nat_event, &src_ip, a->nat_src_ip, + a->proto, a->src_port, a->nat_src_port, + a->vrf_id, 0); +} + +/** + * @brief Generate NAT64 BIB create and delete events + * + * @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 (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) +{ + nat_ipfix_logging_nat64_bib_args_t a; + + skip_if_disabled (); + + a.src_ip[0] = src_ip->as_u64[0]; + a.src_ip[1] = src_ip->as_u64[1]; + a.nat_src_ip = nat_src_ip->as_u32; + a.proto = proto; + a.src_port = src_port; + a.nat_src_port = nat_src_port; + a.vrf_id = vrf_id; + a.nat_event = is_create ? NAT64_BIB_CREATE : NAT64_BIB_DELETE; + + vl_api_rpc_call_main_thread (nat_ipfix_logging_nat64_bib_rpc_cb, + (u8 *) & a, sizeof (a)); +} + +vlib_frame_t * +nat_data_callback_nat64_bib (flow_report_main_t * frm, + flow_report_t * fr, + vlib_frame_t * f, + u32 * to_next, u32 node_index) +{ + nat_ipfix_logging_nat64_bibe (0, 0, 0, 0, 0, 0, 0, 1); + return f; +} + +static void +nat_ipfix_logging_nat64_ses_rpc_cb (nat_ipfix_logging_nat64_ses_args_t * a) +{ + ip6_address_t src_ip, dst_ip; + src_ip.as_u64[0] = a->src_ip[0]; + src_ip.as_u64[1] = a->src_ip[1]; + dst_ip.as_u64[0] = a->dst_ip[0]; + dst_ip.as_u64[1] = a->dst_ip[1]; + nat_ipfix_logging_nat64_ses (a->nat_event, &src_ip, a->nat_src_ip, + a->proto, a->src_port, a->nat_src_port, + &dst_ip, a->nat_dst_ip, a->dst_port, + a->nat_dst_port, a->vrf_id, 0); +} + +/** + * @brief Generate NAT64 session create and delete events + * + * @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 (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) +{ + nat_ipfix_logging_nat64_ses_args_t a; + + skip_if_disabled (); + + a.src_ip[0] = src_ip->as_u64[0]; + a.src_ip[1] = src_ip->as_u64[1]; + a.nat_src_ip = nat_src_ip->as_u32; + a.proto = proto; + a.src_port = src_port; + a.nat_src_port = nat_src_port; + a.dst_ip[0] = dst_ip->as_u64[0]; + a.dst_ip[1] = dst_ip->as_u64[1]; + a.nat_dst_ip = nat_dst_ip->as_u32; + a.dst_port = dst_port; + a.nat_dst_port = nat_dst_port; + a.vrf_id = vrf_id; + a.nat_event = is_create ? NAT64_SESSION_CREATE : NAT64_SESSION_DELETE; + + vl_api_rpc_call_main_thread (nat_ipfix_logging_nat64_ses_rpc_cb, + (u8 *) & a, sizeof (a)); +} + +vlib_frame_t * +nat_data_callback_nat64_session (flow_report_main_t * frm, + flow_report_t * fr, + vlib_frame_t * f, + u32 * to_next, u32 node_index) +{ + nat_ipfix_logging_nat64_ses (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1); return f; } @@ -825,6 +1948,66 @@ snat_ipfix_logging_enable_disable (int enable, u32 domain_id, u16 src_port) clib_warning ("vnet_flow_report_add_del returned %d", rv); return -1; } + + a.rewrite_callback = nat_template_rewrite_max_sessions; + a.flow_data_callback = nat_data_callback_max_sessions; + + rv = vnet_flow_report_add_del (frm, &a, NULL); + if (rv) + { + clib_warning ("vnet_flow_report_add_del returned %d", rv); + return -1; + } + + a.rewrite_callback = nat_template_rewrite_max_bibs; + a.flow_data_callback = nat_data_callback_max_bibs; + + rv = vnet_flow_report_add_del (frm, &a, NULL); + if (rv) + { + clib_warning ("vnet_flow_report_add_del returned %d", rv); + return -1; + } + + a.rewrite_callback = nat_template_rewrite_max_frags_ip4; + a.flow_data_callback = nat_data_callback_max_frags_ip4; + + rv = vnet_flow_report_add_del (frm, &a, NULL); + if (rv) + { + clib_warning ("vnet_flow_report_add_del returned %d", rv); + return -1; + } + + a.rewrite_callback = nat_template_rewrite_max_frags_ip6; + a.flow_data_callback = nat_data_callback_max_frags_ip6; + + rv = vnet_flow_report_add_del (frm, &a, NULL); + if (rv) + { + clib_warning ("vnet_flow_report_add_del returned %d", rv); + return -1; + } + + a.rewrite_callback = nat_template_rewrite_nat64_bib; + a.flow_data_callback = nat_data_callback_nat64_bib; + + rv = vnet_flow_report_add_del (frm, &a, NULL); + if (rv) + { + clib_warning ("vnet_flow_report_add_del returned %d", rv); + return -1; + } + + a.rewrite_callback = nat_template_rewrite_nat64_session; + a.flow_data_callback = nat_data_callback_nat64_session; + + rv = vnet_flow_report_add_del (frm, &a, NULL); + if (rv) + { + clib_warning ("vnet_flow_report_add_del returned %d", rv); + return -1; + } } return 0; diff --git a/src/plugins/nat/nat_ipfix_logging.h b/src/plugins/nat/nat_ipfix_logging.h index 6dbf6627fba..0750149d7a5 100644 --- a/src/plugins/nat/nat_ipfix_logging.h +++ b/src/plugins/nat/nat_ipfix_logging.h @@ -17,16 +17,26 @@ #ifndef __included_nat_ipfix_logging_h__ #define __included_nat_ipfix_logging_h__ +#include <nat/nat.h> + typedef enum { NAT_ADDRESSES_EXHAUTED = 3, NAT44_SESSION_CREATE = 4, NAT44_SESSION_DELETE = 5, + NAT64_SESSION_CREATE = 6, + NAT64_SESSION_DELETE = 7, + NAT64_BIB_CREATE = 10, + NAT64_BIB_DELETE = 11, NAT_PORTS_EXHAUSTED = 12, QUOTA_EXCEEDED = 13, } nat_event_t; typedef enum { + MAX_SESSION_ENTRIES = 1, + MAX_BIB_ENTRIES = 2, MAX_ENTRIES_PER_USER = 3, + MAX_FRAGMENTS_PENDING_REASSEMBLY = 5, + MAX_FRAGMENTS_PENDING_REASSEMBLY_IP6, } quota_exceed_event_t; typedef struct { @@ -37,16 +47,34 @@ typedef struct { vlib_buffer_t *nat44_session_buffer; vlib_buffer_t *addr_exhausted_buffer; vlib_buffer_t *max_entries_per_user_buffer; + vlib_buffer_t *max_sessions_buffer; + vlib_buffer_t *max_bibs_buffer; + vlib_buffer_t *max_frags_ip4_buffer; + vlib_buffer_t *max_frags_ip6_buffer; + vlib_buffer_t *nat64_bib_buffer; + vlib_buffer_t *nat64_ses_buffer; /** frames containing ipfix buffers */ vlib_frame_t *nat44_session_frame; vlib_frame_t *addr_exhausted_frame; vlib_frame_t *max_entries_per_user_frame; + vlib_frame_t *max_sessions_frame; + vlib_frame_t *max_bibs_frame; + vlib_frame_t *max_frags_ip4_frame; + vlib_frame_t *max_frags_ip6_frame; + vlib_frame_t *nat64_bib_frame; + vlib_frame_t *nat64_ses_frame; /** next record offset */ u32 nat44_session_next_record_offset; u32 addr_exhausted_next_record_offset; u32 max_entries_per_user_next_record_offset; + u32 max_sessions_next_record_offset; + u32 max_bibs_next_record_offset; + u32 max_frags_ip4_next_record_offset; + u32 max_frags_ip6_next_record_offset; + u32 nat64_bib_next_record_offset; + u32 nat64_ses_next_record_offset; /** Time reference pair */ u64 milisecond_time_0; @@ -56,6 +84,12 @@ typedef struct { u16 nat44_session_template_id; u16 addr_exhausted_template_id; u16 max_entries_per_user_template_id; + u16 max_sessions_template_id; + u16 max_bibs_template_id; + u16 max_frags_ip4_template_id; + u16 max_frags_ip6_template_id; + u16 nat64_bib_template_id; + u16 nat64_ses_template_id; /** stream index */ u32 stream_index; @@ -74,6 +108,21 @@ void snat_ipfix_logging_nat44_ses_delete (u32 src_ip, u32 nat_src_ip, u16 src_port, u16 nat_src_port, u32 vrf_id); void snat_ipfix_logging_addresses_exhausted(u32 pool_id); -void snat_ipfix_logging_max_entries_per_user(u32 src_ip); +void snat_ipfix_logging_max_entries_per_user(u32 limit, u32 src_ip); +void nat_ipfix_logging_max_sessions(u32 limit); +void nat_ipfix_logging_max_bibs(u32 limit); +void nat_ipfix_logging_max_fragments_ip4(u32 limit, ip4_address_t * src); +void nat_ipfix_logging_max_fragments_ip6(u32 limit, ip6_address_t * src); +void nat_ipfix_logging_nat64_session(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); +void nat_ipfix_logging_nat64_bib(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); #endif /* __included_nat_ipfix_logging_h__ */ diff --git a/src/plugins/nat/nat_reass.c b/src/plugins/nat/nat_reass.c index a97d8f017e9..0a3660d9200 100644 --- a/src/plugins/nat/nat_reass.c +++ b/src/plugins/nat/nat_reass.c @@ -19,6 +19,7 @@ #include <vnet/vnet.h> #include <nat/nat_reass.h> +#include <nat/nat_ipfix_logging.h> nat_reass_main_t nat_reass_main; @@ -325,7 +326,11 @@ nat_ip4_reass_add_fragment (nat_reass_ip4_t * reass, u32 bi) u32 elt_index; if (reass->frag_n >= srm->ip4_max_frag) - return -1; + { + nat_ipfix_logging_max_fragments_ip4 (srm->ip4_max_frag, + &reass->key.src); + return -1; + } clib_spinlock_lock_if_init (&srm->ip4_reass_lock); @@ -517,7 +522,11 @@ nat_ip6_reass_add_fragment (nat_reass_ip6_t * reass, u32 bi) u32 elt_index; if (reass->frag_n >= srm->ip6_max_frag) - return -1; + { + nat_ipfix_logging_max_fragments_ip6 (srm->ip6_max_frag, + &reass->key.src); + return -1; + } clib_spinlock_lock_if_init (&srm->ip6_reass_lock); @@ -718,7 +727,7 @@ show_nat_reass_command_fn (vlib_main_t * vm, unformat_input_t * input, { vlib_cli_output (vm, "NAT IPv4 virtual fragmentation reassembly is %s", nat_reass_is_drop_frag (0) ? "DISABLED" : "ENABLED"); - vlib_cli_output (vm, " max-reasssemblies %u", nat_reass_get_max_reass (0)); + vlib_cli_output (vm, " max-reassemblies %u", nat_reass_get_max_reass (0)); vlib_cli_output (vm, " max-fragments %u", nat_reass_get_max_frag (0)); vlib_cli_output (vm, " timeout %usec", nat_reass_get_timeout (0)); vlib_cli_output (vm, " reassemblies:"); @@ -726,7 +735,7 @@ show_nat_reass_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_output (vm, "NAT IPv6 virtual fragmentation reassembly is %s", nat_reass_is_drop_frag (1) ? "DISABLED" : "ENABLED"); - vlib_cli_output (vm, " max-reasssemblies %u", nat_reass_get_max_reass (1)); + vlib_cli_output (vm, " max-reassemblies %u", nat_reass_get_max_reass (1)); vlib_cli_output (vm, " max-fragments %u", nat_reass_get_max_frag (1)); vlib_cli_output (vm, " timeout %usec", nat_reass_get_timeout (1)); vlib_cli_output (vm, " reassemblies:"); diff --git a/src/vnet/flow/ipfix_info_elements.h b/src/vnet/flow/ipfix_info_elements.h index ee6f53804bf..171cdfe702e 100644 --- a/src/vnet/flow/ipfix_info_elements.h +++ b/src/vnet/flow/ipfix_info_elements.h @@ -419,7 +419,11 @@ _(layer2FrameDeltaCount, 430, u64) \ _(layer2FrameTotalCount, 431, u64) \ _(pseudoWireDestinationIPv4Address, 432, ip4_address_t) \ _(ignoredLayer2FrameTotalCount, 433, u64) \ -_(natQuotaExceededEvent, 466, u32) +_(natQuotaExceededEvent, 466, u32) \ +_(maxSessionEntries, 471, u32) \ +_(maxBIBEntries, 472, u32) \ +_(maxEntriesPerUser, 473, u32) \ +_(maxFragmentsPendingReassembly, 475, u32) typedef enum { |