2 * Copyright (c) 2017 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <vlib/vlib.h>
17 #include <vnet/ip/ip6_packet.h>
18 #include <vnet/udp/udp_local.h>
19 #include <ioam/analyse/ioam_summary_export.h>
20 #include <ioam/analyse/ip6/ip6_ioam_analyse.h>
23 ioam_template_rewrite (ipfix_exporter_t *exp, flow_report_t *fr,
24 u16 collector_port, ipfix_report_element_t *elts,
25 u32 n_elts, u32 *stream_index)
29 ipfix_message_header_t *h;
30 ipfix_set_header_t *s;
31 ipfix_template_header_t *t;
32 ipfix_field_specifier_t *f;
33 ipfix_field_specifier_t *first_field;
35 ip4_ipfix_template_packet_t *tp;
38 flow_report_stream_t *stream;
40 stream = &exp->streams[fr->stream_index];
42 /* Determine field count */
43 #define _(field,mask,item,length) \
46 fr->fields_to_send = clib_bitmap_set (fr->fields_to_send, \
51 foreach_ioam_ipfix_field;
54 /* Add Src address, dest address, src port, dest port
55 * path map, number of paths manually */
58 /* allocate rewrite space */
59 vec_validate_aligned (rewrite,
60 sizeof (ip4_ipfix_template_packet_t)
61 + field_count * sizeof (ipfix_field_specifier_t) - 1,
62 CLIB_CACHE_LINE_BYTES);
64 tp = (ip4_ipfix_template_packet_t *) rewrite;
65 ip = (ip4_header_t *) & tp->ip4;
66 udp = (udp_header_t *) (ip + 1);
67 h = (ipfix_message_header_t *) (udp + 1);
68 s = (ipfix_set_header_t *) (h + 1);
69 t = (ipfix_template_header_t *) (s + 1);
70 first_field = f = (ipfix_field_specifier_t *) (t + 1);
72 ip->ip_version_and_header_length = 0x45;
74 ip->protocol = IP_PROTOCOL_UDP;
75 ip->src_address.as_u32 = exp->src_address.ip.ip4.as_u32;
76 ip->dst_address.as_u32 = exp->ipfix_collector.ip.ip4.as_u32;
77 udp->src_port = clib_host_to_net_u16 (collector_port);
78 udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix);
79 udp->length = clib_host_to_net_u16 (vec_len (rewrite) - sizeof (*ip));
81 h->domain_id = clib_host_to_net_u32 (stream->domain_id); //fr->domain_id);
83 /* Add Src address, dest address, src port, dest port
84 * path map, number of paths manually */
85 f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
87 sizeof (ip6_address_t));
90 f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
91 destinationIPv6Address,
92 sizeof (ip6_address_t));
95 f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
96 sourceTransportPort, 2);
99 f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
100 destinationTransportPort, 2);
103 #define _(field,mask,item,length) \
105 f->e_id_length = ipfix_e_id_length (0 /* enterprise */, \
109 foreach_ioam_ipfix_field;
112 f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
113 ioamNumberOfPaths, 2);
116 /* Add ioamPathMap manually */
117 f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
119 (sizeof (ioam_path) +
120 (sizeof (ioam_path_map_t) *
121 IOAM_TRACE_MAX_NODES)));
124 /* Back to the template packet... */
125 ip = (ip4_header_t *) & tp->ip4;
126 udp = (udp_header_t *) (ip + 1);
128 ASSERT (f - first_field);
129 /* Field count in this template */
130 t->id_count = ipfix_id_count (IOAM_FLOW_TEMPLATE_ID, f - first_field);
132 /* set length in octets */
134 ipfix_set_id_length (2 /* set_id */ , (u8 *) f - (u8 *) s);
136 /* message length in octets */
137 h->version_length = version_length ((u8 *) f - (u8 *) h);
139 ip->length = clib_host_to_net_u16 ((u8 *) f - (u8 *) ip);
140 ip->checksum = ip4_header_checksum (ip);
146 ioam_analyse_add_ipfix_record (flow_report_t * fr,
147 ioam_analyser_data_t * record,
148 vlib_buffer_t * b0, u16 offset,
149 ip6_address_t * src, ip6_address_t * dst,
150 u16 src_port, u16 dst_port)
152 clib_spinlock_lock (&record->writer_lock);
158 u16 num_paths_offset;
161 /* Add IPv6 source address manually */
162 memcpy (b0->data + offset, &src->as_u64[0], sizeof (u64));
163 offset += sizeof (u64);
164 memcpy (b0->data + offset, &src->as_u64[1], sizeof (u64));
165 offset += sizeof (u64);
167 /* Add IPv6 destination address manually */
168 memcpy (b0->data + offset, &dst->as_u64[0], sizeof (u64));
169 offset += sizeof (u64);
170 memcpy (b0->data + offset, &dst->as_u64[1], sizeof (u64));
171 offset += sizeof (u64);
173 /* Add source port manually */
174 tmp = clib_host_to_net_u16 (src_port);
175 memcpy (b0->data + offset, &tmp, sizeof (u16));
176 offset += sizeof (u16);
178 /* Add dest port manually */
179 tmp = clib_host_to_net_u16 (dst_port);
180 memcpy (b0->data + offset, &tmp, sizeof (u16));
181 offset += sizeof (u16);
183 #define _(field,mask,item,length) \
184 if (clib_bitmap_get (fr->fields_to_send, field_index)) \
186 /* Expect only 4 bytes */ \
188 tmp = clib_host_to_net_u32((u32)record->field - (u32)record->chached_data_list->field);\
189 memcpy (b0->data + offset, &tmp, length); \
193 foreach_ioam_ipfix_field;
196 /* Store num_paths_offset here and update later */
197 num_paths_offset = offset;
198 offset += sizeof (u16);
200 /* Add ioamPathMap manually */
201 for (i = 0; i < IOAM_MAX_PATHS_PER_FLOW; i++)
203 ioam_analyse_trace_record *trace = record->trace_data.path_data + i;
204 ioam_analyse_trace_record *trace_cached =
205 record->chached_data_list->trace_data.path_data + i;
206 ioam_path *path = (ioam_path *) (b0->data + offset);
212 path->num_nodes = trace->num_nodes;
214 path->trace_type = trace->trace_type;
215 if (0 < (trace->pkt_counter - trace_cached->pkt_counter))
217 u64 new_sum = trace->mean_delay * record->seqno_data.rx_packets;
219 trace_cached->mean_delay *
220 record->chached_data_list->seqno_data.rx_packets;
222 (u32) ((new_sum - old_sum) / (trace->pkt_counter -
223 trace_cached->pkt_counter));
224 path->mean_delay = clib_host_to_net_u32 (path->mean_delay);
227 path->mean_delay = 0;
229 path->bytes_counter =
230 trace->bytes_counter - trace_cached->bytes_counter;
231 path->bytes_counter = clib_host_to_net_u32 (path->bytes_counter);
233 path->pkt_counter = trace->pkt_counter - trace_cached->pkt_counter;
234 path->pkt_counter = clib_host_to_net_u32 (path->pkt_counter);
235 offset += sizeof (ioam_path);
237 for (j = 0; j < trace->num_nodes; j++)
239 path->path[j].node_id =
240 clib_host_to_net_u32 (trace->path[j].node_id);
241 path->path[j].ingress_if =
242 clib_host_to_net_u16 (trace->path[j].ingress_if);
243 path->path[j].egress_if =
244 clib_host_to_net_u16 (trace->path[j].egress_if);
245 path->path[j].state_up = trace->path[j].state_up;
248 //offset += (sizeof(ioam_path_map_t) * trace->num_nodes);
249 offset += (sizeof (ioam_path_map_t) * IOAM_TRACE_MAX_NODES); //FIXME
253 num_paths = clib_host_to_net_u16 (num_paths);
254 memcpy (b0->data + num_paths_offset, &num_paths, sizeof (u16));
257 *(record->chached_data_list) = *record;
258 record->chached_data_list->chached_data_list = NULL;
260 clib_spinlock_unlock (&record->writer_lock);
265 ioam_send_flows (flow_report_main_t *frm, ipfix_exporter_t *exp,
266 flow_report_t *fr, vlib_frame_t *f, u32 *to_next,
269 vlib_buffer_t *b0 = NULL;
273 ip4_ipfix_template_packet_t *tp;
274 ipfix_message_header_t *h;
275 ipfix_set_header_t *s = NULL;
280 vlib_main_t *vm = vlib_get_main ();
282 ioam_analyser_data_t *record = NULL;
283 flow_report_stream_t *stream;
284 ioam_analyser_data_t *aggregated_data;
287 stream = &exp->streams[fr->stream_index];
289 clib_memset (&temp, 0, sizeof (ip6_address_t));
291 aggregated_data = ioam_analyser_main.aggregated_data;
292 data_len = vec_len (aggregated_data);
294 vec_foreach_index (i, aggregated_data)
297 record = aggregated_data + i;
299 /* Flush if last entry */
300 if (i == (data_len - 1))
303 if (!record->is_free)
306 if (PREDICT_FALSE (b0 == NULL))
308 if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
311 b0 = vlib_get_buffer (vm, bi0);
312 memcpy (b0->data, fr->rewrite, vec_len (fr->rewrite));
313 b0->current_data = 0;
314 b0->current_length = vec_len (fr->rewrite);
315 b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
316 vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0;
317 vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0;
319 tp = vlib_buffer_get_current (b0);
324 /* FIXUP: message header export_time */
325 h->export_time = clib_host_to_net_u32 (((u32) time (NULL)));
327 /* FIXUP: message header sequence_number */
328 h->sequence_number = stream->sequence_number++;
329 h->sequence_number = clib_host_to_net_u32 (h->sequence_number);
330 next_offset = (u32) (((u8 *) (s + 1)) - (u8 *) tp);
333 next_offset = ioam_analyse_add_ipfix_record (fr, record,
337 /* Flush data if packet len is about to reach path mtu */
338 if (next_offset > (exp->path_mtu - 250))
342 if (PREDICT_FALSE (flush && b0))
344 s->set_id_length = ipfix_set_id_length (IOAM_FLOW_TEMPLATE_ID,
345 next_offset - (sizeof (*ip) +
348 b0->current_length = next_offset;
349 b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
350 tp = vlib_buffer_get_current (b0);
351 ip = (ip4_header_t *) & tp->ip4;
352 udp = (udp_header_t *) (ip + 1);
356 new_l0 = clib_host_to_net_u16 ((u16) next_offset);
357 sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t,
358 length /* changed member */ );
360 ip->checksum = ip_csum_fold (sum0);
363 clib_host_to_net_u16 (b0->current_length - sizeof (*ip));
365 if (exp->udp_checksum)
367 /* RFC 7011 section 10.3.2. */
368 udp->checksum = ip4_tcp_udp_compute_checksum (vm, b0, ip);
369 if (udp->checksum == 0)
370 udp->checksum = 0xffff;
377 if (f->n_vectors == VLIB_FRAME_SIZE)
379 vlib_put_frame_to_node (vm, node_index, f);
380 f = vlib_get_frame_to_node (vm, node_index);
382 to_next = vlib_frame_vector_args (f);
393 ioam_flow_create (u8 del)
395 vnet_flow_report_add_del_args_t args;
398 ipfix_exporter_t *exp = &flow_report_main.exporters[0];
401 clib_memset (&args, 0, sizeof (args));
402 args.rewrite_callback = ioam_template_rewrite;
403 args.flow_data_callback = ioam_send_flows;
404 del ? (args.is_add = 0) : (args.is_add = 1);
405 args.domain_id = domain_id;
407 rv = vnet_flow_report_add_del (exp, &args, &template_id);
413 case VNET_API_ERROR_NO_SUCH_ENTRY:
414 return clib_error_return (0, "registration not found...");
416 return clib_error_return (0, "vnet_flow_report_add_del returned %d",
424 ioam_flow_report_init (vlib_main_t * vm)
430 VLIB_INIT_FUNCTION (ioam_flow_report_init) =
432 .runs_after = VLIB_INITS("flow_report_init"),
437 * fd.io coding-style-patch-verification: ON
440 * eval: (c-set-style "gnu")