Line data Source code
1 : /*
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:
6 : *
7 : * http://www.apache.org/licenses/LICENSE-2.0
8 : *
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.
14 : */
15 : /*
16 : *------------------------------------------------------------------
17 : * ioam_cache.c - ioam ip6 API / debug CLI handling
18 : *------------------------------------------------------------------
19 : */
20 :
21 : #include <vnet/vnet.h>
22 : #include <vnet/plugin/plugin.h>
23 : #include <ioam/ip6/ioam_cache.h>
24 :
25 : #include <vlibapi/api.h>
26 : #include <vlibmemory/api.h>
27 : #include <vnet/ip/ip6_hop_by_hop.h>
28 :
29 : #include "ioam_cache.h"
30 :
31 : /* define message IDs */
32 : #include <ioam/ip6/ioam_cache.api_enum.h>
33 : #include <ioam/ip6/ioam_cache.api_types.h>
34 :
35 : #define REPLY_MSG_ID_BASE cm->msg_id_base
36 : #include <vlibapi/api_helper_macros.h>
37 :
38 : ioam_cache_main_t ioam_cache_main;
39 :
40 : static u8 *
41 0 : ioam_e2e_id_trace_handler (u8 * s, ip6_hop_by_hop_option_t * opt)
42 : {
43 0 : ioam_e2e_id_option_t *e2e = (ioam_e2e_id_option_t *) opt;
44 :
45 0 : if (e2e)
46 : {
47 : s =
48 0 : format (s, "IP6_HOP_BY_HOP E2E ID = %U\n", format_ip6_address,
49 : &(e2e->id));
50 : }
51 :
52 :
53 0 : return s;
54 : }
55 :
56 : static u8 *
57 0 : ioam_e2e_cache_trace_handler (u8 * s, ip6_hop_by_hop_option_t * opt)
58 : {
59 0 : ioam_e2e_cache_option_t *e2e = (ioam_e2e_cache_option_t *) opt;
60 :
61 0 : if (e2e)
62 : {
63 : s =
64 0 : format (s, "IP6_HOP_BY_HOP E2E CACHE = pool:%d idx:%d\n",
65 0 : e2e->pool_id, e2e->pool_index);
66 : }
67 :
68 :
69 0 : return s;
70 : }
71 :
72 : /* Action function shared between message handler and debug CLI */
73 : int
74 0 : ioam_cache_ip6_enable_disable (ioam_cache_main_t * em,
75 : ip6_address_t * sr_localsid, u8 is_disable)
76 : {
77 0 : vlib_main_t *vm = em->vlib_main;
78 :
79 0 : if (is_disable == 0)
80 : {
81 0 : ioam_cache_table_init (vm);
82 0 : em->sr_localsid_cache.as_u64[0] = sr_localsid->as_u64[0];
83 0 : em->sr_localsid_cache.as_u64[1] = sr_localsid->as_u64[1];
84 0 : ip6_hbh_set_next_override (em->cache_hbh_slot);
85 0 : ip6_hbh_register_option (HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE_ID,
86 : 0, ioam_e2e_id_trace_handler);
87 0 : ip6_hbh_register_option (HBH_OPTION_TYPE_IOAM_E2E_CACHE_ID,
88 : 0, ioam_e2e_cache_trace_handler);
89 :
90 : }
91 : else
92 : {
93 0 : ip6_hbh_set_next_override (IP6_LOOKUP_NEXT_POP_HOP_BY_HOP);
94 0 : ioam_cache_table_destroy (vm);
95 0 : em->sr_localsid_cache.as_u64[0] = 0;
96 0 : em->sr_localsid_cache.as_u64[1] = 0;
97 0 : ip6_hbh_unregister_option (HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE_ID);
98 0 : ip6_hbh_unregister_option (HBH_OPTION_TYPE_IOAM_E2E_CACHE_ID);
99 : }
100 :
101 0 : return 0;
102 : }
103 :
104 : /* Action function shared between message handler and debug CLI */
105 : int
106 0 : ioam_tunnel_select_ip6_enable_disable (ioam_cache_main_t * em,
107 : u8 criteria,
108 : u8 no_of_responses,
109 : ip6_address_t * sr_localsid,
110 : u8 is_disable)
111 : {
112 0 : vlib_main_t *vm = em->vlib_main;
113 :
114 0 : if (is_disable == 0)
115 : {
116 0 : ioam_cache_ts_table_init (vm);
117 0 : em->criteria_oneway = criteria;
118 0 : em->wait_for_responses = no_of_responses;
119 0 : em->sr_localsid_ts.as_u64[0] = sr_localsid->as_u64[0];
120 0 : em->sr_localsid_ts.as_u64[1] = sr_localsid->as_u64[1];
121 0 : ip6_hbh_set_next_override (em->ts_hbh_slot);
122 0 : ip6_ioam_ts_cache_set_rewrite ();
123 0 : ip6_hbh_register_option (HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE_ID,
124 : 0, ioam_e2e_id_trace_handler);
125 0 : ip6_hbh_register_option (HBH_OPTION_TYPE_IOAM_E2E_CACHE_ID,
126 : 0, ioam_e2e_cache_trace_handler);
127 :
128 : /* Turn on the cleanup process */
129 : // vlib_process_signal_event (vm, em->cleanup_process_node_index, 1, 0);
130 : }
131 : else
132 : {
133 0 : ioam_cache_ts_timer_node_enable (vm, 0);
134 0 : ip6_hbh_set_next_override (IP6_LOOKUP_NEXT_POP_HOP_BY_HOP);
135 0 : em->sr_localsid_ts.as_u64[0] = 0;
136 0 : em->sr_localsid_ts.as_u64[1] = 0;
137 0 : ioam_cache_ts_table_destroy (vm);
138 0 : ip6_ioam_ts_cache_cleanup_rewrite ();
139 0 : ip6_hbh_unregister_option (HBH_OPTION_TYPE_IOAM_EDGE_TO_EDGE_ID);
140 0 : ip6_hbh_unregister_option (HBH_OPTION_TYPE_IOAM_E2E_CACHE_ID);
141 : }
142 :
143 0 : return 0;
144 : }
145 :
146 : /* API message handler */
147 0 : static void vl_api_ioam_cache_ip6_enable_disable_t_handler
148 : (vl_api_ioam_cache_ip6_enable_disable_t * mp)
149 : {
150 : vl_api_ioam_cache_ip6_enable_disable_reply_t *rmp;
151 0 : ioam_cache_main_t *cm = &ioam_cache_main;
152 : ip6_address_t sr_localsid;
153 : int rv;
154 :
155 0 : sr_localsid.as_u64[0] = 0;
156 0 : sr_localsid.as_u64[1] = 0;
157 : rv =
158 0 : ioam_cache_ip6_enable_disable (cm, &sr_localsid, (int) (mp->is_disable));
159 0 : REPLY_MACRO (VL_API_IOAM_CACHE_IP6_ENABLE_DISABLE_REPLY);
160 : }
161 :
162 : static clib_error_t *
163 0 : set_ioam_cache_command_fn (vlib_main_t * vm,
164 : unformat_input_t * input, vlib_cli_command_t * cmd)
165 : {
166 0 : ioam_cache_main_t *em = &ioam_cache_main;
167 0 : u8 is_disable = 0;
168 : ip6_address_t sr_localsid;
169 0 : u8 address_set = 0;
170 :
171 0 : while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
172 : {
173 0 : if (unformat (input, "disable"))
174 0 : is_disable = 1;
175 0 : else if (!address_set
176 0 : && unformat (input, "sr_localsid %U", unformat_ip6_address,
177 : &sr_localsid))
178 0 : address_set = 1;
179 : else
180 : break;
181 : }
182 :
183 0 : if (is_disable == 0 && !address_set)
184 0 : return clib_error_return (0, "Error: SRv6 LocalSID address is mandatory");
185 :
186 0 : ioam_cache_ip6_enable_disable (em, &sr_localsid, is_disable);
187 :
188 0 : return 0;
189 : }
190 :
191 : /* *INDENT_OFF* */
192 186217 : VLIB_CLI_COMMAND (set_ioam_cache_command, static) =
193 : {
194 : .path = "set ioam ip6 cache",.short_help =
195 : "set ioam ip6 cache sr_localsid <ip6 address> [disable]",.function =
196 : set_ioam_cache_command_fn};
197 : /* *INDENT_ON* */
198 :
199 : #define IOAM_TS_WAIT_FOR_RESPONSES 3
200 : static clib_error_t *
201 0 : set_ioam_tunnel_select_command_fn (vlib_main_t * vm,
202 : unformat_input_t * input,
203 : vlib_cli_command_t * cmd)
204 : {
205 0 : ioam_cache_main_t *em = &ioam_cache_main;
206 0 : u8 is_disable = 0;
207 0 : u8 one_way = 0;
208 : ip6_address_t sr_localsid;
209 0 : u8 address_set = 0;
210 0 : u8 no_of_responses = IOAM_TS_WAIT_FOR_RESPONSES;
211 :
212 0 : while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
213 : {
214 0 : if (unformat (input, "disable"))
215 0 : is_disable = 1;
216 0 : else if (unformat (input, "rtt"))
217 0 : one_way = 0;
218 0 : else if (unformat (input, "oneway"))
219 0 : one_way = 1;
220 0 : else if (unformat (input, "wait_for_responses %d", &no_of_responses))
221 : ;
222 0 : else if (!address_set
223 0 : && unformat (input, "sr_localsid %U", unformat_ip6_address,
224 : &sr_localsid))
225 0 : address_set = 1;
226 : else
227 : break;
228 : }
229 0 : if (is_disable == 0 && !address_set)
230 0 : return clib_error_return (0,
231 : "Error: SRv6 LocalSID address is mandatory to receive response.");
232 :
233 0 : ioam_tunnel_select_ip6_enable_disable (em, one_way, no_of_responses,
234 : &sr_localsid, is_disable);
235 :
236 0 : return 0;
237 : }
238 :
239 : /* *INDENT_OFF* */
240 186217 : VLIB_CLI_COMMAND (set_ioam_cache_ts_command, static) =
241 : {
242 : .path = "set ioam ip6 sr-tunnel-select",.short_help =
243 : "set ioam ip6 sr-tunnel-select [disable] [oneway|rtt] [wait_for_responses <n|default 3>] \
244 : [sr_localsid <ip6 address>]",.function = set_ioam_tunnel_select_command_fn};
245 : /* *INDENT_ON* */
246 :
247 : static void
248 0 : ioam_cache_table_print (vlib_main_t * vm, u8 verbose)
249 : {
250 0 : ioam_cache_main_t *cm = &ioam_cache_main;
251 0 : ioam_cache_entry_t *entry = 0;
252 0 : ioam_cache_ts_entry_t *ts_entry = 0;
253 0 : int no_of_threads = vec_len (vlib_worker_threads);
254 : int i;
255 :
256 0 : pool_foreach (entry, cm->ioam_rewrite_pool)
257 : {
258 0 : vlib_cli_output (vm, "%U", format_ioam_cache_entry, entry);
259 : }
260 :
261 0 : if (cm->ts_stats)
262 0 : for (i = 0; i < no_of_threads; i++)
263 : {
264 0 : vlib_cli_output (vm, "Number of entries in thread-%d selection pool: %lu\n \
265 : (pool found to be full: %lu times)", i,
266 0 : cm->ts_stats[i].inuse, cm->ts_stats[i].add_failed);
267 :
268 0 : if (verbose == 1)
269 0 : vlib_worker_thread_barrier_sync (vm);
270 0 : pool_foreach (ts_entry, cm->ioam_ts_pool[i])
271 : {
272 0 : vlib_cli_output (vm, "%U", format_ioam_cache_ts_entry, ts_entry,
273 : (u32) i);
274 : }
275 0 : vlib_worker_thread_barrier_release (vm);
276 : }
277 :
278 0 : }
279 :
280 : static clib_error_t *
281 0 : show_ioam_cache_command_fn (vlib_main_t * vm,
282 : unformat_input_t * input,
283 : vlib_cli_command_t * cmd)
284 : {
285 0 : u8 verbose = 0;
286 :
287 0 : while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
288 : {
289 0 : if (unformat (input, "verbose"))
290 0 : verbose = 1;
291 : else
292 0 : return clib_error_return (0, "unknown input `%U'",
293 : format_unformat_error, input);
294 : }
295 0 : ioam_cache_table_print (vm, verbose);
296 :
297 :
298 0 : return 0;
299 : }
300 :
301 : /* *INDENT_OFF* */
302 186217 : VLIB_CLI_COMMAND (show_ioam_cache_command, static) =
303 : {
304 : .path = "show ioam ip6 cache",.short_help =
305 : "show ioam ip6 cache [verbose]",.function = show_ioam_cache_command_fn};
306 : /* *INDENT_ON* */
307 :
308 : #include <ioam/ip6/ioam_cache.api.c>
309 : static clib_error_t *
310 575 : ioam_cache_init (vlib_main_t * vm)
311 : {
312 : vlib_node_t *node;
313 575 : ioam_cache_main_t *em = &ioam_cache_main;
314 575 : u32 cache_node_index = ioam_cache_node.index;
315 575 : u32 ts_node_index = ioam_cache_ts_node.index;
316 575 : vlib_node_t *ip6_hbyh_node = NULL, *ip6_hbh_pop_node = NULL, *error_node =
317 : NULL;
318 :
319 575 : clib_memset (&ioam_cache_main, 0, sizeof (ioam_cache_main));
320 : /* Ask for a correctly-sized block of API message decode slots */
321 575 : em->msg_id_base = setup_message_id_table ();
322 :
323 : /* Hook this node to ip6-hop-by-hop */
324 575 : ip6_hbyh_node = vlib_get_node_by_name (vm, (u8 *) "ip6-hop-by-hop");
325 575 : em->cache_hbh_slot =
326 575 : vlib_node_add_next (vm, ip6_hbyh_node->index, cache_node_index);
327 575 : em->ts_hbh_slot =
328 575 : vlib_node_add_next (vm, ip6_hbyh_node->index, ts_node_index);
329 :
330 575 : ip6_hbh_pop_node = vlib_get_node_by_name (vm, (u8 *) "ip6-pop-hop-by-hop");
331 575 : em->ip6_hbh_pop_node_index = ip6_hbh_pop_node->index;
332 :
333 575 : error_node = vlib_get_node_by_name (vm, (u8 *) "error-drop");
334 575 : em->error_node_index = error_node->index;
335 575 : em->vlib_main = vm;
336 :
337 575 : node = vlib_get_node_by_name (vm, (u8 *) "ip6-add-from-cache-hop-by-hop");
338 575 : em->ip6_add_from_cache_hbh_node_index = node->index;
339 :
340 575 : node = vlib_get_node_by_name (vm, (u8 *) "ip6-add-syn-hop-by-hop");
341 575 : em->ip6_reset_ts_hbh_node_index = node->index;
342 :
343 575 : return 0;
344 : }
345 :
346 7487 : VLIB_INIT_FUNCTION (ioam_cache_init);
347 :
348 : /*
349 : * fd.io coding-style-patch-verification: ON
350 : *
351 : * Local Variables:
352 : * eval: (c-set-style "gnu")
353 : * End:
354 : */
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