2 * Copyright (c) 2016 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.
15 #include <vlib/vlib.h>
16 #include <vnet/vnet.h>
17 #include <vnet/pg/pg.h>
18 #include <vppinfra/error.h>
19 #include <vpp/app/version.h>
21 #include <vnet/ip/ip6.h>
22 #include <vnet/ip/ip6_hop_by_hop.h>
23 #include <vnet/ip/ip6_hop_by_hop_packet.h>
25 #include <vppinfra/hash.h>
26 #include <vppinfra/error.h>
27 #include <vppinfra/elog.h>
28 #include <vnet/plugin/plugin.h>
30 #include <ioam/lib-trace/trace_util.h>
32 /* Timestamp precision multipliers for seconds, milliseconds, microseconds
33 * and nanoseconds respectively.
35 static f64 trace_tsp_mul[4] = { 1, 1e3, 1e6, 1e9 };
44 typedef CLIB_PACKED(struct {
45 ip6_hop_by_hop_option_t hdr;
47 u8 data_list_elts_left;
48 u32 elts[0]; /* Variable type. So keep it generic */
49 }) ioam_trace_option_t;
53 extern ip6_hop_by_hop_ioam_main_t ip6_hop_by_hop_ioam_main;
54 extern ip6_main_t ip6_main;
56 #define foreach_ip6_hop_by_hop_ioam_trace_stats \
57 _(PROCESSED, "Pkts with ip6 hop-by-hop trace options") \
58 _(PROFILE_MISS, "Pkts with ip6 hop-by-hop trace options but no profile set") \
59 _(UPDATED, "Pkts with trace updated") \
60 _(FULL, "Pkts with trace options but no space")
62 static char *ip6_hop_by_hop_ioam_trace_stats_strings[] = {
63 #define _(sym,string) string,
64 foreach_ip6_hop_by_hop_ioam_trace_stats
70 #define _(sym,str) IP6_IOAM_TRACE_##sym,
71 foreach_ip6_hop_by_hop_ioam_trace_stats
73 IP6_IOAM_TRACE_N_STATS,
74 } ip6_ioam_trace_stats_t;
80 u64 counters[ARRAY_LEN (ip6_hop_by_hop_ioam_trace_stats_strings)];
83 vlib_main_t *vlib_main;
84 vnet_main_t *vnet_main;
85 } ip6_hop_by_hop_ioam_trace_main_t;
87 ip6_hop_by_hop_ioam_trace_main_t ip6_hop_by_hop_ioam_trace_main;
90 ip6_ioam_trace_stats_increment_counter (u32 counter_index, u64 increment)
92 ip6_hop_by_hop_ioam_trace_main_t *hm = &ip6_hop_by_hop_ioam_trace_main;
94 hm->counters[counter_index] += increment;
99 format_ioam_data_list_element (u8 * s, va_list * args)
101 u32 *elt = va_arg (*args, u32 *);
102 u8 *trace_type_p = va_arg (*args, u8 *);
103 u8 trace_type = *trace_type_p;
106 if (trace_type & BIT_TTL_NODEID)
108 u32 ttl_node_id_host_byte_order = clib_net_to_host_u32 (*elt);
109 s = format (s, "ttl 0x%x node id 0x%x ",
110 ttl_node_id_host_byte_order >> 24,
111 ttl_node_id_host_byte_order & 0x00FFFFFF);
116 if (trace_type & BIT_ING_INTERFACE && trace_type & BIT_ING_INTERFACE)
118 u32 ingress_host_byte_order = clib_net_to_host_u32 (*elt);
119 s = format (s, "ingress 0x%x egress 0x%x ",
120 ingress_host_byte_order >> 16,
121 ingress_host_byte_order & 0xFFFF);
125 if (trace_type & BIT_TIMESTAMP)
127 u32 ts_in_host_byte_order = clib_net_to_host_u32 (*elt);
128 s = format (s, "ts 0x%x \n", ts_in_host_byte_order);
132 if (trace_type & BIT_APPDATA)
134 u32 appdata_in_host_byte_order = clib_net_to_host_u32 (*elt);
135 s = format (s, "app 0x%x ", appdata_in_host_byte_order);
144 ip6_ioam_trace_get_sizeof_handler (u32 * result)
147 u8 trace_data_size = 0;
148 trace_profile *profile = NULL;
152 profile = trace_profile_find ();
154 if (PREDICT_FALSE (!profile))
156 ip6_ioam_trace_stats_increment_counter (IP6_IOAM_TRACE_PROFILE_MISS, 1);
160 trace_data_size = fetch_trace_data_size (profile->trace_type);
161 if (PREDICT_FALSE (trace_data_size == 0))
162 return VNET_API_ERROR_INVALID_VALUE;
164 if (PREDICT_FALSE (profile->num_elts * trace_data_size > 254))
165 return VNET_API_ERROR_INVALID_VALUE;
168 sizeof (ioam_trace_option_t) + (profile->num_elts * trace_data_size);
177 ip6_hop_by_hop_ioam_trace_rewrite_handler (u8 * rewrite_string,
180 ioam_trace_option_t *trace_option = NULL;
181 u8 trace_data_size = 0;
182 u8 trace_option_elts = 0;
183 trace_profile *profile = NULL;
186 profile = trace_profile_find ();
188 if (PREDICT_FALSE (!profile))
190 ip6_ioam_trace_stats_increment_counter (IP6_IOAM_TRACE_PROFILE_MISS, 1);
194 if (PREDICT_FALSE (!rewrite_string))
197 trace_option_elts = profile->num_elts;
198 trace_data_size = fetch_trace_data_size (profile->trace_type);
199 trace_option = (ioam_trace_option_t *) rewrite_string;
200 trace_option->hdr.type = HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST |
201 HBH_OPTION_TYPE_DATA_CHANGE_ENROUTE;
202 trace_option->hdr.length = 2 /*ioam_trace_type,data_list_elts_left */ +
203 trace_option_elts * trace_data_size;
204 trace_option->ioam_trace_type = profile->trace_type & TRACE_TYPE_MASK;
205 trace_option->data_list_elts_left = trace_option_elts;
207 sizeof (ioam_trace_option_t) + (trace_option_elts * trace_data_size);
214 ip6_hbh_ioam_trace_data_list_handler (vlib_buffer_t * b, ip6_header_t * ip,
215 ip6_hop_by_hop_option_t * opt)
217 ip6_main_t *im = &ip6_main;
218 ip_lookup_main_t *lm = &im->lookup_main;
219 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
221 ioam_trace_option_t *trace = (ioam_trace_option_t *) opt;
222 u32 adj_index = vnet_buffer (b)->ip.adj_index[VLIB_TX];
223 ip_adjacency_t *adj = ip_get_adjacency (lm, adj_index);
227 trace_profile *profile = NULL;
230 profile = trace_profile_find ();
232 if (PREDICT_FALSE (!profile))
234 ip6_ioam_trace_stats_increment_counter (IP6_IOAM_TRACE_PROFILE_MISS, 1);
241 if (PREDICT_TRUE (trace->data_list_elts_left))
243 trace->data_list_elts_left--;
244 /* fetch_trace_data_size returns in bytes. Convert it to 4-bytes
245 * to skip to this node's location.
248 trace->data_list_elts_left *
249 fetch_trace_data_size (trace->ioam_trace_type) / 4;
250 elt = &trace->elts[elt_index];
251 if (trace->ioam_trace_type & BIT_TTL_NODEID)
254 clib_host_to_net_u32 ((ip->hop_limit << 24) | profile->node_id);
258 if (trace->ioam_trace_type & BIT_ING_INTERFACE)
261 (vnet_buffer (b)->sw_if_index[VLIB_RX] & 0xFFFF) << 16 |
262 (adj->rewrite_header.sw_if_index & 0xFFFF);
263 *elt = clib_host_to_net_u32 (*elt);
267 if (trace->ioam_trace_type & BIT_TIMESTAMP)
269 /* Send least significant 32 bits */
271 (f64) (((f64) hm->unix_time_0) +
272 (vlib_time_now (hm->vlib_main) - hm->vlib_time_0));
274 time_u64.as_u64 = time_f64 * trace_tsp_mul[profile->trace_tsp];
275 *elt = clib_host_to_net_u32 (time_u64.as_u32[0]);
279 if (trace->ioam_trace_type & BIT_APPDATA)
281 /* $$$ set elt0->app_data */
282 *elt = clib_host_to_net_u32 (profile->app_data);
285 ip6_ioam_trace_stats_increment_counter (IP6_IOAM_TRACE_UPDATED, 1);
289 ip6_ioam_trace_stats_increment_counter (IP6_IOAM_TRACE_FULL, 1);
295 ip6_hbh_ioam_trace_data_list_trace_handler (u8 * s,
296 ip6_hop_by_hop_option_t * opt)
298 ioam_trace_option_t *trace;
299 u8 trace_data_size_in_words = 0;
303 trace = (ioam_trace_option_t *) opt;
305 format (s, " Trace Type 0x%x , %d elts left\n", trace->ioam_trace_type,
306 trace->data_list_elts_left);
307 trace_data_size_in_words =
308 fetch_trace_data_size (trace->ioam_trace_type) / 4;
309 elt = &trace->elts[0];
310 while ((u8 *) elt < ((u8 *) (&trace->elts[0]) + trace->hdr.length - 2
311 /* -2 accounts for ioam_trace_type,elts_left */ ))
313 s = format (s, " [%d] %U\n", elt_index,
314 format_ioam_data_list_element,
315 elt, &trace->ioam_trace_type);
317 elt += trace_data_size_in_words;
323 static clib_error_t *
324 ip6_show_ioam_trace_cmd_fn (vlib_main_t * vm,
325 unformat_input_t * input,
326 vlib_cli_command_t * cmd)
328 ip6_hop_by_hop_ioam_trace_main_t *hm = &ip6_hop_by_hop_ioam_trace_main;
332 for (i = 0; i < IP6_IOAM_TRACE_N_STATS; i++)
335 format (s, " %s - %lu\n", ip6_hop_by_hop_ioam_trace_stats_strings[i],
339 vlib_cli_output (vm, "%v", s);
346 VLIB_CLI_COMMAND (ip6_show_ioam_trace_cmd, static) = {
347 .path = "show ioam trace",
348 .short_help = "iOAM trace statistics",
349 .function = ip6_show_ioam_trace_cmd_fn,
354 VLIB_PLUGIN_REGISTER () = {
355 .version = VPP_BUILD_VER,
359 static clib_error_t *
360 ip6_hop_by_hop_ioam_trace_init (vlib_main_t * vm)
362 ip6_hop_by_hop_ioam_trace_main_t *hm = &ip6_hop_by_hop_ioam_trace_main;
365 if ((error = vlib_call_init_function (vm, ip_main_init)))
368 if ((error = vlib_call_init_function (vm, ip6_lookup_init)))
371 if ((error = vlib_call_init_function (vm, ip6_hop_by_hop_ioam_init)))
375 hm->vnet_main = vnet_get_main ();
376 memset (hm->counters, 0, sizeof (hm->counters));
379 if (ip6_hbh_register_option
380 (HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST,
381 ip6_hbh_ioam_trace_data_list_handler,
382 ip6_hbh_ioam_trace_data_list_trace_handler) < 0)
383 return (clib_error_create
384 ("registration of HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST failed"));
387 if (ip6_hbh_add_register_option (HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST,
388 sizeof (ioam_trace_option_t),
389 ip6_hop_by_hop_ioam_trace_rewrite_handler)
391 return (clib_error_create
392 ("registration of HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST for rewrite failed"));
399 ip6_trace_profile_cleanup (void)
401 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
403 hm->options_size[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] = 0;
411 ip6_trace_profile_setup (void)
414 ip6_hop_by_hop_ioam_main_t *hm = &ip6_hop_by_hop_ioam_main;
416 trace_profile *profile = NULL;
419 profile = trace_profile_find ();
421 if (PREDICT_FALSE (!profile))
423 ip6_ioam_trace_stats_increment_counter (IP6_IOAM_TRACE_PROFILE_MISS, 1);
428 if (ip6_ioam_trace_get_sizeof_handler (&trace_size) < 0)
431 hm->options_size[HBH_OPTION_TYPE_IOAM_TRACE_DATA_LIST] = trace_size;
437 VLIB_INIT_FUNCTION (ip6_hop_by_hop_ioam_trace_init);
440 * fd.io coding-style-patch-verification: ON
443 * eval: (c-set-style "gnu")