sr_localsid.c revision 13e6fce7
1/*
2 * sr_localsid.c: ipv6 segment routing Endpoint behaviors
3 *
4 * Copyright (c) 2016 Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18/**
19 * @file
20 * @brief Processing of packets with a SRH
21 *
22 * CLI to define new Segment Routing End processing functions.
23 * Graph node to support such functions.
24 *
25 * Each function associates an SRv6 segment (IPv6 address) with an specific
26 * Segment Routing function.
27 *
28 */
29
30#include <vlib/vlib.h>
31#include <vnet/vnet.h>
32#include <vnet/srv6/sr.h>
33#include <vnet/ip/ip.h>
34#include <vnet/srv6/sr_packet.h>
35#include <vnet/ip/ip6_packet.h>
36#include <vnet/fib/ip6_fib.h>
37#include <vnet/dpo/dpo.h>
38#include <vnet/adj/adj.h>
39
40#include <vppinfra/error.h>
41#include <vppinfra/elog.h>
42
43/**
44 * @brief Dynamically added SR localsid DPO type
45 */
46static dpo_type_t sr_localsid_dpo_type;
47static dpo_type_t sr_localsid_d_dpo_type;
48
49/**
50 * @brief SR localsid add/del
51 *
52 * Function to add or delete SR LocalSIDs.
53 *
54 * @param is_del Boolean of whether its a delete instruction
55 * @param localsid_addr IPv6 address of the localsid
56 * @param is_decap Boolean of whether decapsulation is allowed in this function
57 * @param behavior Type of behavior (function) for this localsid
58 * @param sw_if_index Only for L2/L3 xconnect. OIF. In VRF variant the fib_table.
59 * @param vlan_index Only for L2 xconnect. Outgoing VLAN tag.
60 * @param fib_table  FIB table in which we should install the localsid entry
61 * @param nh_addr Next Hop IPv4/IPv6 address. Only for L2/L3 xconnect.
62 *
63 * @return 0 on success, error otherwise.
64 */
65int
66sr_cli_localsid (char is_del, ip6_address_t * localsid_addr, u16 prefixlen,
67		 char end_psp, u8 behavior, u32 sw_if_index, u32 vlan_index,
68		 u32 fib_table, ip46_address_t * nh_addr, void *ls_plugin_mem)
69{
70  ip6_sr_main_t *sm = &sr_main;
71  uword *p;
72  int rv;
73  u8 pref_length = 128;
74  sr_localsid_fn_registration_t *plugin = 0;
75
76  ip6_sr_localsid_t *ls = 0;
77
78  dpo_id_t dpo = DPO_INVALID;
79
80  /* Search for the item */
81  p = mhash_get (&sm->sr_localsids_index_hash, localsid_addr);
82
83  if (p)
84    {
85      if (is_del)
86	{
87	  /* Retrieve localsid */
88	  ls = pool_elt_at_index (sm->localsids, p[0]);
89	  if (ls->behavior >= SR_BEHAVIOR_LAST)
90	    {
91	      plugin = pool_elt_at_index (sm->plugin_functions,
92					  ls->behavior - SR_BEHAVIOR_LAST);
93	      pref_length = plugin->prefix_length;
94	    }
95
96	  if (prefixlen != 0)
97	    {
98	      pref_length = prefixlen;
99	    }
100
101	  /* Delete FIB entry */
102	  fib_prefix_t pfx = {
103	    .fp_proto = FIB_PROTOCOL_IP6,
104	    .fp_len = pref_length,
105	    .fp_addr = {
106			.ip6 = *localsid_addr,
107			}
108	  };
109
110	  fib_table_entry_delete (fib_table_find
111				  (FIB_PROTOCOL_IP6, fib_table), &pfx,
112				  FIB_SOURCE_SR);
113
114	  /* In case it is a Xconnect iface remove the (OIF, NHOP) adj */
115	  if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX6
116	      || ls->behavior == SR_BEHAVIOR_DX4)
117	    adj_unlock (ls->nh_adj);
118
119	  if (ls->behavior >= SR_BEHAVIOR_LAST)
120	    {
121	      /* Callback plugin removal function */
122	      rv = plugin->removal (ls);
123	    }
124
125	  /* Delete localsid registry */
126	  pool_put (sm->localsids, ls);
127	  mhash_unset (&sm->sr_localsids_index_hash, localsid_addr, NULL);
128	  return 0;
129	}
130      else			/* create with function already existing; complain */
131	return -1;
132    }
133  else
134    /* delete; localsid does not exist; complain */
135  if (is_del)
136    return -2;
137
138  if (behavior >= SR_BEHAVIOR_LAST)
139    {
140      sr_localsid_fn_registration_t *plugin = 0;
141      plugin =
142	pool_elt_at_index (sm->plugin_functions, behavior - SR_BEHAVIOR_LAST);
143      pref_length = plugin->prefix_length;
144    }
145
146  /* Check whether there exists a FIB entry with such address */
147  fib_prefix_t pfx = {
148    .fp_proto = FIB_PROTOCOL_IP6,
149    .fp_len = pref_length,
150  };
151
152  pfx.fp_addr.as_u64[0] = localsid_addr->as_u64[0];
153  pfx.fp_addr.as_u64[1] = localsid_addr->as_u64[1];
154
155  if (prefixlen != 0)
156    {
157      pfx.fp_len = prefixlen;
158    }
159
160  /* Lookup the FIB index associated to the table id provided */
161  u32 fib_index = fib_table_find (FIB_PROTOCOL_IP6, fib_table);
162  if (fib_index == ~0)
163    return -3;
164
165  /* Lookup the localsid in such FIB table */
166  fib_node_index_t fei = fib_table_lookup_exact_match (fib_index, &pfx);
167  if (FIB_NODE_INDEX_INVALID != fei)
168    return -4;			//There is an entry for such address (the localsid addr)
169
170  /* Create a new localsid registry */
171  pool_get (sm->localsids, ls);
172  clib_memset (ls, 0, sizeof (*ls));
173
174  clib_memcpy (&ls->localsid, localsid_addr, sizeof (ip6_address_t));
175  ls->end_psp = end_psp;
176  ls->behavior = behavior;
177  ls->nh_adj = (u32) ~ 0;
178  ls->fib_table = fib_table;
179  ls->localsid_len = pfx.fp_len;
180  switch (behavior)
181    {
182    case SR_BEHAVIOR_END:
183      break;
184    case SR_BEHAVIOR_X:
185      ls->sw_if_index = sw_if_index;
186      clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
187      break;
188    case SR_BEHAVIOR_T:
189      ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP6, sw_if_index);
190      break;
191    case SR_BEHAVIOR_DX4:
192      ls->sw_if_index = sw_if_index;
193      clib_memcpy (&ls->next_hop.ip4, &nh_addr->ip4, sizeof (ip4_address_t));
194      break;
195    case SR_BEHAVIOR_DX6:
196      ls->sw_if_index = sw_if_index;
197      clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
198      break;
199    case SR_BEHAVIOR_DT6:
200      ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP6, sw_if_index);
201      break;
202    case SR_BEHAVIOR_DT4:
203      ls->vrf_index = fib_table_find (FIB_PROTOCOL_IP4, sw_if_index);
204      break;
205    case SR_BEHAVIOR_DX2:
206      ls->sw_if_index = sw_if_index;
207      ls->vlan_index = vlan_index;
208      break;
209    }
210
211  /* Figure out the adjacency magic for Xconnect variants */
212  if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX4
213      || ls->behavior == SR_BEHAVIOR_DX6)
214    {
215      adj_index_t nh_adj_index = ADJ_INDEX_INVALID;
216
217      /* Retrieve the adjacency corresponding to the (OIF, next_hop) */
218      if (ls->behavior == SR_BEHAVIOR_DX6 || ls->behavior == SR_BEHAVIOR_X)
219	nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP6, VNET_LINK_IP6,
220					    nh_addr, sw_if_index);
221
222      else if (ls->behavior == SR_BEHAVIOR_DX4)
223	nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, VNET_LINK_IP4,
224					    nh_addr, sw_if_index);
225
226      /* Check for ADJ creation error. If so panic */
227      if (nh_adj_index == ADJ_INDEX_INVALID)
228	{
229	  pool_put (sm->localsids, ls);
230	  return -5;
231	}
232
233      ls->nh_adj = nh_adj_index;
234    }
235
236  /* Set DPO */
237  if (ls->behavior == SR_BEHAVIOR_END || ls->behavior == SR_BEHAVIOR_X
238      || ls->behavior == SR_BEHAVIOR_T)
239    dpo_set (&dpo, sr_localsid_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
240  else if (ls->behavior > SR_BEHAVIOR_D_FIRST
241	   && ls->behavior < SR_BEHAVIOR_LAST)
242    dpo_set (&dpo, sr_localsid_d_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
243  else if (ls->behavior >= SR_BEHAVIOR_LAST)
244    {
245      sr_localsid_fn_registration_t *plugin = 0;
246      plugin = pool_elt_at_index (sm->plugin_functions,
247				  ls->behavior - SR_BEHAVIOR_LAST);
248      /* Copy the unformat memory result */
249      ls->plugin_mem = ls_plugin_mem;
250      /* Callback plugin creation function */
251      rv = plugin->creation (ls);
252      if (rv)
253	{
254	  pool_put (sm->localsids, ls);
255	  return -6;
256	}
257      dpo_set (&dpo, plugin->dpo, DPO_PROTO_IP6, ls - sm->localsids);
258    }
259
260  /* Set hash key for searching localsid by address */
261  mhash_set (&sm->sr_localsids_index_hash, localsid_addr, ls - sm->localsids,
262	     NULL);
263
264  fib_table_entry_special_dpo_add (fib_index, &pfx, FIB_SOURCE_SR,
265				   FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
266  dpo_reset (&dpo);
267
268  /* Set counter to zero */
269  vlib_validate_combined_counter (&(sm->sr_ls_valid_counters),
270				  ls - sm->localsids);
271  vlib_validate_combined_counter (&(sm->sr_ls_invalid_counters),
272				  ls - sm->localsids);
273
274  vlib_zero_combined_counter (&(sm->sr_ls_valid_counters),
275			      ls - sm->localsids);
276  vlib_zero_combined_counter (&(sm->sr_ls_invalid_counters),
277			      ls - sm->localsids);
278
279  return 0;
280}
281
282/**
283 * @brief SR LocalSID CLI function.
284 *
285 * @see sr_cli_localsid
286 */
287static clib_error_t *
288sr_cli_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
289			    vlib_cli_command_t * cmd)
290{
291  vnet_main_t *vnm = vnet_get_main ();
292  ip6_sr_main_t *sm = &sr_main;
293  u32 sw_if_index = (u32) ~ 0, vlan_index = (u32) ~ 0, fib_index = 0;
294  u16 prefix_len = 0;
295  int is_del = 0;
296  int end_psp = 0;
297  ip6_address_t resulting_address;
298  ip46_address_t next_hop;
299  char address_set = 0;
300  char behavior = 0;
301  void *ls_plugin_mem = 0;
302
303  int rv;
304
305  clib_memset (&resulting_address, 0, sizeof (ip6_address_t));
306  ip46_address_reset (&next_hop);
307
308  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
309    {
310      if (unformat (input, "del"))
311	is_del = 1;
312      else if (!address_set
313	       && unformat (input, "address %U", unformat_ip6_address,
314			    &resulting_address))
315	address_set = 1;
316      else if (!address_set
317	       && unformat (input, "prefix %U/%d", unformat_ip6_address,
318			    &resulting_address, &prefix_len))
319	address_set = 1;
320      else if (!address_set
321	       && unformat (input, "addr %U", unformat_ip6_address,
322			    &resulting_address))
323	address_set = 1;
324      else if (unformat (input, "fib-table %u", &fib_index));
325      else if (vlan_index == (u32) ~ 0
326	       && unformat (input, "vlan %u", &vlan_index));
327      else if (!behavior && unformat (input, "behavior"))
328	{
329	  if (unformat (input, "end.x %U %U",
330			unformat_vnet_sw_interface, vnm, &sw_if_index,
331			unformat_ip6_address, &next_hop.ip6))
332	    behavior = SR_BEHAVIOR_X;
333	  else if (unformat (input, "end.t %u", &sw_if_index))
334	    behavior = SR_BEHAVIOR_T;
335	  else if (unformat (input, "end.dx6 %U %U",
336			     unformat_vnet_sw_interface, vnm, &sw_if_index,
337			     unformat_ip6_address, &next_hop.ip6))
338	    behavior = SR_BEHAVIOR_DX6;
339	  else if (unformat (input, "end.dx4 %U %U",
340			     unformat_vnet_sw_interface, vnm, &sw_if_index,
341			     unformat_ip4_address, &next_hop.ip4))
342	    behavior = SR_BEHAVIOR_DX4;
343	  else if (unformat (input, "end.dx2 %U",
344			     unformat_vnet_sw_interface, vnm, &sw_if_index))
345	    behavior = SR_BEHAVIOR_DX2;
346	  else if (unformat (input, "end.dt6 %u", &sw_if_index))
347	    behavior = SR_BEHAVIOR_DT6;
348	  else if (unformat (input, "end.dt4 %u", &sw_if_index))
349	    behavior = SR_BEHAVIOR_DT4;
350	  else
351	    {
352	      /* Loop over all the plugin behavior format functions */
353	      sr_localsid_fn_registration_t *plugin = 0, **vec_plugins = 0;
354	      sr_localsid_fn_registration_t **plugin_it = 0;
355
356	      /* Create a vector out of the plugin pool as recommended */
357              /* *INDENT-OFF* */
358              pool_foreach (plugin, sm->plugin_functions,
359                {
360                  vec_add1 (vec_plugins, plugin);
361                });
362              /* *INDENT-ON* */
363
364	      vec_foreach (plugin_it, vec_plugins)
365	      {
366		if (unformat
367		    (input, "%U", (*plugin_it)->ls_unformat, &ls_plugin_mem))
368		  {
369		    behavior = (*plugin_it)->sr_localsid_function_number;
370		    break;
371		  }
372	      }
373	    }
374
375	  if (!behavior)
376	    {
377	      if (unformat (input, "end"))
378		behavior = SR_BEHAVIOR_END;
379	      else
380		break;
381	    }
382	}
383      else if (!end_psp && unformat (input, "psp"))
384	end_psp = 1;
385      else
386	break;
387    }
388
389  if (!behavior && end_psp)
390    behavior = SR_BEHAVIOR_END;
391
392  if (!address_set)
393    return clib_error_return (0,
394			      "Error: SRv6 LocalSID address is mandatory.");
395  if (!is_del && !behavior)
396    return clib_error_return (0,
397			      "Error: SRv6 LocalSID behavior is mandatory.");
398  if (vlan_index != (u32) ~ 0)
399    return clib_error_return (0,
400			      "Error: SRv6 End.DX2 with rewrite VLAN tag not supported by now.");
401  if (end_psp && !(behavior == SR_BEHAVIOR_END || behavior == SR_BEHAVIOR_X))
402    return clib_error_return (0,
403			      "Error: SRv6 PSP only compatible with End and End.X");
404
405  rv =
406    sr_cli_localsid (is_del, &resulting_address, prefix_len, end_psp,
407		     behavior, sw_if_index, vlan_index, fib_index, &next_hop,
408		     ls_plugin_mem);
409
410  switch (rv)
411    {
412    case 0:
413      break;
414    case 1:
415      return 0;
416    case -1:
417      return clib_error_return (0,
418				"Identical localsid already exists. Requested localsid not created.");
419    case -2:
420      return clib_error_return (0,
421				"The requested localsid could not be deleted. SR localsid not found");
422    case -3:
423      return clib_error_return (0, "FIB table %u does not exist", fib_index);
424    case -4:
425      return clib_error_return (0, "There is already one FIB entry for the"
426				"requested localsid non segment routing related");
427    case -5:
428      return clib_error_return (0,
429				"Could not create ARP/ND entry for such next_hop. Internal error.");
430    case -6:
431      return clib_error_return (0,
432				"Error on the plugin based localsid creation.");
433    default:
434      return clib_error_return (0, "BUG: sr localsid returns %d", rv);
435    }
436  return 0;
437}
438
439/* *INDENT-OFF* */
440VLIB_CLI_COMMAND (sr_localsid_command, static) = {
441  .path = "sr localsid",
442  .short_help = "sr localsid (del) address XX:XX::YY:YY"
443      "(fib-table 8) behavior STRING",
444  .long_help =
445    "Create SR LocalSID and binds it to a particular behavior\n"
446    "Arguments:\n"
447    "\tlocalSID IPv6_addr(128b)   LocalSID IPv6 address\n"
448    "\t(fib-table X)              Optional. VRF where to install SRv6 localsid\n"
449    "\tbehavior STRING            Specifies the behavior\n"
450    "\n\tBehaviors:\n"
451    "\tEnd\t-> Endpoint.\n"
452    "\tEnd.X\t-> Endpoint with decapsulation and Layer-3 cross-connect.\n"
453    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
454    "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
455    "\t\tParameters: '<iface>'\n"
456    "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
457    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
458    "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
459    "\t\tParameters: '<iface> <ip4_next_hop>'\n"
460    "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
461    "\t\tParameters: '<ip6_fib_table>'\n"
462    "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
463    "\t\tParameters: '<ip4_fib_table>'\n",
464  .function = sr_cli_localsid_command_fn,
465};
466/* *INDENT-ON* */
467
468/**
469 * @brief CLI function to 'show' all SR LocalSIDs on console.
470 */
471static clib_error_t *
472show_sr_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
473			     vlib_cli_command_t * cmd)
474{
475  vnet_main_t *vnm = vnet_get_main ();
476  ip6_sr_main_t *sm = &sr_main;
477  ip6_sr_localsid_t **localsid_list = 0;
478  ip6_sr_localsid_t *ls;
479  int i;
480
481  vlib_cli_output (vm, "SRv6 - My LocalSID Table:");
482  vlib_cli_output (vm, "=========================");
483  /* *INDENT-OFF* */
484  pool_foreach (ls, sm->localsids, ({ vec_add1 (localsid_list, ls); }));
485  /* *INDENT-ON* */
486  for (i = 0; i < vec_len (localsid_list); i++)
487    {
488      ls = localsid_list[i];
489      switch (ls->behavior)
490	{
491	case SR_BEHAVIOR_END:
492	  vlib_cli_output (vm, "\tAddress: \t%U\n\tBehavior: \tEnd",
493			   format_ip6_address, &ls->localsid);
494	  break;
495	case SR_BEHAVIOR_X:
496	  vlib_cli_output (vm,
497			   "\tAddress: \t%U\n\tBehavior: \tX (Endpoint with Layer-3 cross-connect)"
498			   "\n\tIface:  \t%U\n\tNext hop: \t%U",
499			   format_ip6_address, &ls->localsid,
500			   format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
501			   format_ip6_address, &ls->next_hop.ip6);
502	  break;
503	case SR_BEHAVIOR_T:
504	  vlib_cli_output (vm,
505			   "\tAddress: \t%U\n\tBehavior: \tT (Endpoint with specific IPv6 table lookup)"
506			   "\n\tTable:  \t%u",
507			   format_ip6_address, &ls->localsid,
508			   fib_table_get_table_id (ls->vrf_index,
509						   FIB_PROTOCOL_IP6));
510	  break;
511	case SR_BEHAVIOR_DX4:
512	  vlib_cli_output (vm,
513			   "\tAddress: \t%U\n\tBehavior: \tDX4 (Endpoint with decapsulation and IPv4 cross-connect)"
514			   "\n\tIface:  \t%U\n\tNext hop: \t%U",
515			   format_ip6_address, &ls->localsid,
516			   format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
517			   format_ip4_address, &ls->next_hop.ip4);
518	  break;
519	case SR_BEHAVIOR_DX6:
520	  vlib_cli_output (vm,
521			   "\tAddress: \t%U\n\tBehavior: \tDX6 (Endpoint with decapsulation and IPv6 cross-connect)"
522			   "\n\tIface:  \t%U\n\tNext hop: \t%U",
523			   format_ip6_address, &ls->localsid,
524			   format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
525			   format_ip6_address, &ls->next_hop.ip6);
526	  break;
527	case SR_BEHAVIOR_DX2:
528	  if (ls->vlan_index == (u32) ~ 0)
529	    vlib_cli_output (vm,
530			     "\tAddress: \t%U\n\tBehavior: \tDX2 (Endpoint with decapulation and Layer-2 cross-connect)"
531			     "\n\tIface:  \t%U", format_ip6_address,
532			     &ls->localsid, format_vnet_sw_if_index_name, vnm,
533			     ls->sw_if_index);
534	  else
535	    vlib_cli_output (vm,
536			     "Unsupported yet. (DX2 with egress VLAN rewrite)");
537	  break;
538	case SR_BEHAVIOR_DT6:
539	  vlib_cli_output (vm,
540			   "\tAddress: \t%U\n\tBehavior: \tDT6 (Endpoint with decapsulation and specific IPv6 table lookup)"
541			   "\n\tTable: %u", format_ip6_address, &ls->localsid,
542			   fib_table_get_table_id (ls->vrf_index,
543						   FIB_PROTOCOL_IP6));
544	  break;
545	case SR_BEHAVIOR_DT4:
546	  vlib_cli_output (vm,
547			   "\tAddress: \t%U\n\tBehavior: \tDT4 (Endpoint with decapsulation and specific IPv4 table lookup)"
548			   "\n\tTable: \t%u", format_ip6_address,
549			   &ls->localsid,
550			   fib_table_get_table_id (ls->vrf_index,
551						   FIB_PROTOCOL_IP4));
552	  break;
553	default:
554	  if (ls->behavior >= SR_BEHAVIOR_LAST)
555	    {
556	      sr_localsid_fn_registration_t *plugin =
557		pool_elt_at_index (sm->plugin_functions,
558				   ls->behavior - SR_BEHAVIOR_LAST);
559
560	      vlib_cli_output (vm, "\tAddress: \t%U\n"
561			       "\tBehavior: \t%s (%s)\n\t%U",
562			       format_ip6_address, &ls->localsid,
563			       plugin->keyword_str, plugin->def_str,
564			       plugin->ls_format, ls->plugin_mem);
565	    }
566	  else
567	    //Should never get here...
568	    vlib_cli_output (vm, "Internal error");
569	  break;
570	}
571      if (ls->end_psp)
572	vlib_cli_output (vm, "\tPSP: \tTrue\n");
573
574      /* Print counters */
575      vlib_counter_t valid, invalid;
576      vlib_get_combined_counter (&(sm->sr_ls_valid_counters), i, &valid);
577      vlib_get_combined_counter (&(sm->sr_ls_invalid_counters), i, &invalid);
578      vlib_cli_output (vm, "\tGood traffic: \t[%Ld packets : %Ld bytes]\n",
579		       valid.packets, valid.bytes);
580      vlib_cli_output (vm, "\tBad traffic:  \t[%Ld packets : %Ld bytes]\n",
581		       invalid.packets, invalid.bytes);
582      vlib_cli_output (vm, "--------------------");
583    }
584  return 0;
585}
586
587/* *INDENT-OFF* */
588VLIB_CLI_COMMAND (show_sr_localsid_command, static) = {
589  .path = "show sr localsids",
590  .short_help = "show sr localsids",
591  .function = show_sr_localsid_command_fn,
592};
593/* *INDENT-ON* */
594
595/**
596 * @brief Function to 'clear' ALL SR localsid counters
597 */
598static clib_error_t *
599clear_sr_localsid_counters_command_fn (vlib_main_t * vm,
600				       unformat_input_t * input,
601				       vlib_cli_command_t * cmd)
602{
603  ip6_sr_main_t *sm = &sr_main;
604
605  vlib_clear_combined_counters (&(sm->sr_ls_valid_counters));
606  vlib_clear_combined_counters (&(sm->sr_ls_invalid_counters));
607
608  return 0;
609}
610
611/* *INDENT-OFF* */
612VLIB_CLI_COMMAND (clear_sr_localsid_counters_command, static) = {
613  .path = "clear sr localsid-counters",
614  .short_help = "clear sr localsid-counters",
615  .function = clear_sr_localsid_counters_command_fn,
616};
617/* *INDENT-ON* */
618
619/************************ SR LocalSID graphs node ****************************/
620/**
621 * @brief SR localsid node trace
622 */
623typedef struct
624{
625  ip6_address_t localsid;
626  u16 behavior;
627  u8 sr[256];
628  u8 num_segments;
629  u8 segments_left;
630} sr_localsid_trace_t;
631
632#define foreach_sr_localsid_error                                   \
633_(NO_INNER_HEADER, "(SR-Error) No inner IP header")                 \
634_(NO_MORE_SEGMENTS, "(SR-Error) No more segments")                  \
635_(NO_SRH, "(SR-Error) No SR header")                                \
636_(NO_PSP, "(SR-Error) PSP Not available (segments left > 0)")       \
637_(NOT_LS, "(SR-Error) Decaps not available (segments left > 0)")    \
638_(L2, "(SR-Error) SRv6 decapsulated a L2 frame without dest")
639
640typedef enum
641{
642#define _(sym,str) SR_LOCALSID_ERROR_##sym,
643  foreach_sr_localsid_error
644#undef _
645    SR_LOCALSID_N_ERROR,
646} sr_localsid_error_t;
647
648static char *sr_localsid_error_strings[] = {
649#define _(sym,string) string,
650  foreach_sr_localsid_error
651#undef _
652};
653
654#define foreach_sr_localsid_next        \
655_(ERROR, "error-drop")                  \
656_(IP6_LOOKUP, "ip6-lookup")             \
657_(IP4_LOOKUP, "ip4-lookup")             \
658_(IP6_REWRITE, "ip6-rewrite")           \
659_(IP4_REWRITE, "ip4-rewrite")           \
660_(INTERFACE_OUTPUT, "interface-output")
661
662typedef enum
663{
664#define _(s,n) SR_LOCALSID_NEXT_##s,
665  foreach_sr_localsid_next
666#undef _
667    SR_LOCALSID_N_NEXT,
668} sr_localsid_next_t;
669
670/**
671 * @brief SR LocalSID graph node trace function
672 *
673 * @see sr_localsid
674 */
675u8 *
676format_sr_localsid_trace (u8 * s, va_list * args)
677{
678  CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
679  CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
680  sr_localsid_trace_t *t = va_arg (*args, sr_localsid_trace_t *);
681
682  s =
683    format (s, "SR-LOCALSID:\n\tLocalsid: %U\n", format_ip6_address,
684	    &t->localsid);
685  switch (t->behavior)
686    {
687    case SR_BEHAVIOR_END:
688      s = format (s, "\tBehavior: End\n");
689      break;
690    case SR_BEHAVIOR_DX6:
691      s = format (s, "\tBehavior: Decapsulation with IPv6 L3 xconnect\n");
692      break;
693    case SR_BEHAVIOR_DX4:
694      s = format (s, "\tBehavior: Decapsulation with IPv4 L3 xconnect\n");
695      break;
696    case SR_BEHAVIOR_X:
697      s = format (s, "\tBehavior: IPv6 L3 xconnect\n");
698      break;
699    case SR_BEHAVIOR_T:
700      s = format (s, "\tBehavior: IPv6 specific table lookup\n");
701      break;
702    case SR_BEHAVIOR_DT6:
703      s = format (s, "\tBehavior: Decapsulation with IPv6 Table lookup\n");
704      break;
705    case SR_BEHAVIOR_DT4:
706      s = format (s, "\tBehavior: Decapsulation with IPv4 Table lookup\n");
707      break;
708    case SR_BEHAVIOR_DX2:
709      s = format (s, "\tBehavior: Decapsulation with L2 xconnect\n");
710      break;
711    default:
712      s = format (s, "\tBehavior: defined in plugin\n");	//TODO
713      break;
714    }
715  if (t->num_segments != 0xFF)
716    {
717      if (t->num_segments > 0)
718	{
719	  s = format (s, "\tSegments left: %d\n", t->segments_left);
720	  s = format (s, "\tSID list: [in ietf order]");
721	  int i = 0;
722	  for (i = 0; i < t->num_segments; i++)
723	    {
724	      s = format (s, "\n\t-> %U", format_ip6_address,
725			  (ip6_address_t *) & t->sr[i *
726						    sizeof (ip6_address_t)]);
727	    }
728	}
729    }
730  return s;
731}
732
733/**
734 * @brief Function doing End processing.
735 */
736static_always_inline void
737end_srh_processing (vlib_node_runtime_t * node,
738		    vlib_buffer_t * b0,
739		    ip6_header_t * ip0,
740		    ip6_sr_header_t * sr0,
741		    ip6_sr_localsid_t * ls0,
742		    u32 * next0, u8 psp, ip6_ext_header_t * prev0)
743{
744  ip6_address_t *new_dst0;
745
746  if (PREDICT_TRUE (sr0->type == ROUTING_HEADER_TYPE_SR))
747    {
748      if (sr0->segments_left == 1 && psp)
749	{
750	  u32 new_l0, sr_len;
751	  u64 *copy_dst0, *copy_src0;
752	  u32 copy_len_u64s0 = 0;
753
754	  ip0->dst_address.as_u64[0] = sr0->segments->as_u64[0];
755	  ip0->dst_address.as_u64[1] = sr0->segments->as_u64[1];
756
757	  /* Remove the SRH taking care of the rest of IPv6 ext header */
758	  if (prev0)
759	    prev0->next_hdr = sr0->protocol;
760	  else
761	    ip0->protocol = sr0->protocol;
762
763	  sr_len = ip6_ext_header_len (sr0);
764	  vlib_buffer_advance (b0, sr_len);
765	  new_l0 = clib_net_to_host_u16 (ip0->payload_length) - sr_len;
766	  ip0->payload_length = clib_host_to_net_u16 (new_l0);
767	  copy_src0 = (u64 *) ip0;
768	  copy_dst0 = copy_src0 + (sr0->length + 1);
769	  /* number of 8 octet units to copy
770	   * By default in absence of extension headers it is equal to length of ip6 header
771	   * With extension headers it number of 8 octet units of ext headers preceding
772	   * SR header
773	   */
774	  copy_len_u64s0 =
775	    (((u8 *) sr0 - (u8 *) ip0) - sizeof (ip6_header_t)) >> 3;
776	  copy_dst0[4 + copy_len_u64s0] = copy_src0[4 + copy_len_u64s0];
777	  copy_dst0[3 + copy_len_u64s0] = copy_src0[3 + copy_len_u64s0];
778	  copy_dst0[2 + copy_len_u64s0] = copy_src0[2 + copy_len_u64s0];
779	  copy_dst0[1 + copy_len_u64s0] = copy_src0[1 + copy_len_u64s0];
780	  copy_dst0[0 + copy_len_u64s0] = copy_src0[0 + copy_len_u64s0];
781
782	  int i;
783	  for (i = copy_len_u64s0 - 1; i >= 0; i--)
784	    {
785	      copy_dst0[i] = copy_src0[i];
786	    }
787
788	  if (ls0->behavior == SR_BEHAVIOR_X)
789	    {
790	      vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
791	      *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
792	    }
793	  else if (ls0->behavior == SR_BEHAVIOR_T)
794	    {
795	      vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
796	    }
797	}
798      else if (PREDICT_TRUE (sr0->segments_left > 0))
799	{
800	  sr0->segments_left -= 1;
801	  new_dst0 = (ip6_address_t *) (sr0->segments);
802	  new_dst0 += sr0->segments_left;
803	  ip0->dst_address.as_u64[0] = new_dst0->as_u64[0];
804	  ip0->dst_address.as_u64[1] = new_dst0->as_u64[1];
805
806	  if (ls0->behavior == SR_BEHAVIOR_X)
807	    {
808	      vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
809	      *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
810	    }
811	  else if (ls0->behavior == SR_BEHAVIOR_T)
812	    {
813	      vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
814	    }
815	}
816      else
817	{
818	  *next0 = SR_LOCALSID_NEXT_ERROR;
819	  b0->error = node->errors[SR_LOCALSID_ERROR_NO_MORE_SEGMENTS];
820	}
821    }
822  else
823    {
824      /* Error. Routing header of type != SR */
825      *next0 = SR_LOCALSID_NEXT_ERROR;
826      b0->error = node->errors[SR_LOCALSID_ERROR_NO_SRH];
827    }
828}
829
830/*
831 * @brief Function doing SRH processing for D* variants
832 */
833static_always_inline void
834end_decaps_srh_processing (vlib_node_runtime_t * node,
835			   vlib_buffer_t * b0,
836			   ip6_header_t * ip0,
837			   ip6_sr_header_t * sr0,
838			   ip6_sr_localsid_t * ls0, u32 * next0)
839{
840  /* Compute the size of the IPv6 header with all Ext. headers */
841  u8 next_proto;
842  ip6_ext_header_t *next_ext_header;
843  u16 total_size = 0;
844
845  next_proto = ip0->protocol;
846  next_ext_header = (void *) (ip0 + 1);
847  total_size = sizeof (ip6_header_t);
848  while (ip6_ext_hdr (next_proto))
849    {
850      total_size += ip6_ext_header_len (next_ext_header);
851      next_proto = next_ext_header->next_hdr;
852      next_ext_header = ip6_ext_next_header (next_ext_header);
853    }
854
855  /* Ensure this is the last segment. Otherwise drop. */
856  if (sr0 && sr0->segments_left != 0)
857    {
858      *next0 = SR_LOCALSID_NEXT_ERROR;
859      b0->error = node->errors[SR_LOCALSID_ERROR_NOT_LS];
860      return;
861    }
862
863  switch (next_proto)
864    {
865    case IP_PROTOCOL_IPV6:
866      /* Encap-End IPv6. Pop outer IPv6 header. */
867      if (ls0->behavior == SR_BEHAVIOR_DX6)
868	{
869	  vlib_buffer_advance (b0, total_size);
870	  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
871	  *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
872	  return;
873	}
874      else if (ls0->behavior == SR_BEHAVIOR_DT6)
875	{
876	  vlib_buffer_advance (b0, total_size);
877	  vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
878	  return;
879	}
880      break;
881    case IP_PROTOCOL_IP_IN_IP:
882      /* Encap-End IPv4. Pop outer IPv6 header */
883      if (ls0->behavior == SR_BEHAVIOR_DX4)
884	{
885	  vlib_buffer_advance (b0, total_size);
886	  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
887	  *next0 = SR_LOCALSID_NEXT_IP4_REWRITE;
888	  return;
889	}
890      else if (ls0->behavior == SR_BEHAVIOR_DT4)
891	{
892	  vlib_buffer_advance (b0, total_size);
893	  vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
894	  *next0 = SR_LOCALSID_NEXT_IP4_LOOKUP;
895	  return;
896	}
897      break;
898    case IP_PROTOCOL_IP6_NONXT:
899      /* L2 encaps */
900      if (ls0->behavior == SR_BEHAVIOR_DX2)
901	{
902	  vlib_buffer_advance (b0, total_size);
903	  vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->sw_if_index;
904	  *next0 = SR_LOCALSID_NEXT_INTERFACE_OUTPUT;
905	  return;
906	}
907      break;
908    }
909  *next0 = SR_LOCALSID_NEXT_ERROR;
910  b0->error = node->errors[SR_LOCALSID_ERROR_NO_INNER_HEADER];
911  return;
912}
913
914/**
915 * @brief SR LocalSID graph node. Supports all default SR Endpoint variants with decaps
916 */
917static uword
918sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
919		  vlib_frame_t * from_frame)
920{
921  u32 n_left_from, next_index, *from, *to_next;
922  ip6_sr_main_t *sm = &sr_main;
923  from = vlib_frame_vector_args (from_frame);
924  n_left_from = from_frame->n_vectors;
925  next_index = node->cached_next_index;
926  u32 thread_index = vm->thread_index;
927
928  while (n_left_from > 0)
929    {
930      u32 n_left_to_next;
931      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
932
933      /* Quad - Loop */
934      while (n_left_from >= 8 && n_left_to_next >= 4)
935	{
936	  u32 bi0, bi1, bi2, bi3;
937	  vlib_buffer_t *b0, *b1, *b2, *b3;
938	  ip6_header_t *ip0, *ip1, *ip2, *ip3;
939	  ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
940	  u32 next0, next1, next2, next3;
941	  next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
942	  ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
943
944	  /* Prefetch next iteration. */
945	  {
946	    vlib_buffer_t *p4, *p5, *p6, *p7;
947
948	    p4 = vlib_get_buffer (vm, from[4]);
949	    p5 = vlib_get_buffer (vm, from[5]);
950	    p6 = vlib_get_buffer (vm, from[6]);
951	    p7 = vlib_get_buffer (vm, from[7]);
952
953	    /* Prefetch the buffer header and packet for the N+4 loop iteration */
954	    vlib_prefetch_buffer_header (p4, LOAD);
955	    vlib_prefetch_buffer_header (p5, LOAD);
956	    vlib_prefetch_buffer_header (p6, LOAD);
957	    vlib_prefetch_buffer_header (p7, LOAD);
958
959	    CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
960	    CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
961	    CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
962	    CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
963	  }
964
965	  to_next[0] = bi0 = from[0];
966	  to_next[1] = bi1 = from[1];
967	  to_next[2] = bi2 = from[2];
968	  to_next[3] = bi3 = from[3];
969	  from += 4;
970	  to_next += 4;
971	  n_left_from -= 4;
972	  n_left_to_next -= 4;
973
974	  b0 = vlib_get_buffer (vm, bi0);
975	  b1 = vlib_get_buffer (vm, bi1);
976	  b2 = vlib_get_buffer (vm, bi2);
977	  b3 = vlib_get_buffer (vm, bi3);
978
979	  ls0 =
980	    pool_elt_at_index (sm->localsids,
981			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
982	  ls1 =
983	    pool_elt_at_index (sm->localsids,
984			       vnet_buffer (b1)->ip.adj_index[VLIB_TX]);
985	  ls2 =
986	    pool_elt_at_index (sm->localsids,
987			       vnet_buffer (b2)->ip.adj_index[VLIB_TX]);
988	  ls3 =
989	    pool_elt_at_index (sm->localsids,
990			       vnet_buffer (b3)->ip.adj_index[VLIB_TX]);
991
992	  ip0 = vlib_buffer_get_current (b0);
993	  ip1 = vlib_buffer_get_current (b1);
994	  ip2 = vlib_buffer_get_current (b2);
995	  ip3 = vlib_buffer_get_current (b3);
996
997	  sr0 =
998	    ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, NULL);
999	  sr1 =
1000	    ip6_ext_header_find (vm, b1, ip1, IP_PROTOCOL_IPV6_ROUTE, NULL);
1001	  sr2 =
1002	    ip6_ext_header_find (vm, b2, ip2, IP_PROTOCOL_IPV6_ROUTE, NULL);
1003	  sr3 =
1004	    ip6_ext_header_find (vm, b3, ip3, IP_PROTOCOL_IPV6_ROUTE, NULL);
1005
1006	  end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
1007	  end_decaps_srh_processing (node, b1, ip1, sr1, ls1, &next1);
1008	  end_decaps_srh_processing (node, b2, ip2, sr2, ls2, &next2);
1009	  end_decaps_srh_processing (node, b3, ip3, sr3, ls3, &next3);
1010
1011	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1012	    {
1013	      sr_localsid_trace_t *tr =
1014		vlib_add_trace (vm, node, b0, sizeof (*tr));
1015	      tr->num_segments = 0;
1016	      clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1017			   sizeof (tr->localsid.as_u8));
1018	      tr->behavior = ls0->behavior;
1019	      if (ip0 == vlib_buffer_get_current (b0))
1020		{
1021		  if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1022		      && sr0->type == ROUTING_HEADER_TYPE_SR)
1023		    {
1024		      clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1025		      tr->num_segments =
1026			sr0->length * 8 / sizeof (ip6_address_t);
1027		      tr->segments_left = sr0->segments_left;
1028		    }
1029		}
1030	      else
1031		tr->num_segments = 0xFF;
1032	    }
1033
1034	  if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
1035	    {
1036	      sr_localsid_trace_t *tr =
1037		vlib_add_trace (vm, node, b1, sizeof (*tr));
1038	      tr->num_segments = 0;
1039	      clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
1040			   sizeof (tr->localsid.as_u8));
1041	      tr->behavior = ls1->behavior;
1042	      if (ip1 == vlib_buffer_get_current (b1))
1043		{
1044		  if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
1045		      && sr1->type == ROUTING_HEADER_TYPE_SR)
1046		    {
1047		      clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
1048		      tr->num_segments =
1049			sr1->length * 8 / sizeof (ip6_address_t);
1050		      tr->segments_left = sr1->segments_left;
1051		    }
1052		}
1053	      else
1054		tr->num_segments = 0xFF;
1055	    }
1056
1057	  if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
1058	    {
1059	      sr_localsid_trace_t *tr =
1060		vlib_add_trace (vm, node, b2, sizeof (*tr));
1061	      tr->num_segments = 0;
1062	      clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
1063			   sizeof (tr->localsid.as_u8));
1064	      tr->behavior = ls2->behavior;
1065	      if (ip2 == vlib_buffer_get_current (b2))
1066		{
1067		  if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
1068		      && sr2->type == ROUTING_HEADER_TYPE_SR)
1069		    {
1070		      clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
1071		      tr->num_segments =
1072			sr2->length * 8 / sizeof (ip6_address_t);
1073		      tr->segments_left = sr2->segments_left;
1074		    }
1075		}
1076	      else
1077		tr->num_segments = 0xFF;
1078	    }
1079
1080	  if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
1081	    {
1082	      sr_localsid_trace_t *tr =
1083		vlib_add_trace (vm, node, b3, sizeof (*tr));
1084	      tr->num_segments = 0;
1085	      clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
1086			   sizeof (tr->localsid.as_u8));
1087	      tr->behavior = ls3->behavior;
1088	      if (ip3 == vlib_buffer_get_current (b3))
1089		{
1090		  if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
1091		      && sr3->type == ROUTING_HEADER_TYPE_SR)
1092		    {
1093		      clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
1094		      tr->num_segments =
1095			sr3->length * 8 / sizeof (ip6_address_t);
1096		      tr->segments_left = sr3->segments_left;
1097		    }
1098		}
1099	      else
1100		tr->num_segments = 0xFF;
1101	    }
1102
1103	  vlib_increment_combined_counter
1104	    (((next0 ==
1105	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1106	      &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1107	     1, vlib_buffer_length_in_chain (vm, b0));
1108
1109	  vlib_increment_combined_counter
1110	    (((next1 ==
1111	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1112	      &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1113	     1, vlib_buffer_length_in_chain (vm, b1));
1114
1115	  vlib_increment_combined_counter
1116	    (((next2 ==
1117	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1118	      &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1119	     1, vlib_buffer_length_in_chain (vm, b2));
1120
1121	  vlib_increment_combined_counter
1122	    (((next3 ==
1123	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1124	      &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1125	     1, vlib_buffer_length_in_chain (vm, b3));
1126
1127	  vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1128					   n_left_to_next, bi0, bi1, bi2, bi3,
1129					   next0, next1, next2, next3);
1130	}
1131
1132      /* Single loop for potentially the last three packets */
1133      while (n_left_from > 0 && n_left_to_next > 0)
1134	{
1135	  u32 bi0;
1136	  vlib_buffer_t *b0;
1137	  ip6_header_t *ip0;
1138	  ip6_sr_header_t *sr0;
1139	  u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1140	  ip6_sr_localsid_t *ls0;
1141
1142	  bi0 = from[0];
1143	  to_next[0] = bi0;
1144	  from += 1;
1145	  to_next += 1;
1146	  n_left_from -= 1;
1147	  n_left_to_next -= 1;
1148
1149	  b0 = vlib_get_buffer (vm, bi0);
1150	  ip0 = vlib_buffer_get_current (b0);
1151
1152	  /* Lookup the SR End behavior based on IP DA (adj) */
1153	  ls0 =
1154	    pool_elt_at_index (sm->localsids,
1155			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1156
1157	  /* Find SRH as well as previous header */
1158	  sr0 =
1159	    ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, NULL);
1160
1161	  /* SRH processing and End variants */
1162	  end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
1163
1164	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1165	    {
1166	      sr_localsid_trace_t *tr =
1167		vlib_add_trace (vm, node, b0, sizeof (*tr));
1168	      tr->num_segments = 0;
1169	      clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1170			   sizeof (tr->localsid.as_u8));
1171	      tr->behavior = ls0->behavior;
1172	      if (ip0 == vlib_buffer_get_current (b0))
1173		{
1174		  if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1175		      && sr0->type == ROUTING_HEADER_TYPE_SR)
1176		    {
1177		      clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1178		      tr->num_segments =
1179			sr0->length * 8 / sizeof (ip6_address_t);
1180		      tr->segments_left = sr0->segments_left;
1181		    }
1182		}
1183	      else
1184		tr->num_segments = 0xFF;
1185	    }
1186
1187	  /* Increase the counters */
1188	  vlib_increment_combined_counter
1189	    (((next0 ==
1190	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1191	      &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1192	     1, vlib_buffer_length_in_chain (vm, b0));
1193
1194	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1195					   n_left_to_next, bi0, next0);
1196	}
1197      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1198    }
1199  return from_frame->n_vectors;
1200}
1201
1202/* *INDENT-OFF* */
1203VLIB_REGISTER_NODE (sr_localsid_d_node) = {
1204  .function = sr_localsid_d_fn,
1205  .name = "sr-localsid-d",
1206  .vector_size = sizeof (u32),
1207  .format_trace = format_sr_localsid_trace,
1208  .type = VLIB_NODE_TYPE_INTERNAL,
1209  .n_errors = SR_LOCALSID_N_ERROR,
1210  .error_strings = sr_localsid_error_strings,
1211  .n_next_nodes = SR_LOCALSID_N_NEXT,
1212  .next_nodes = {
1213#define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1214    foreach_sr_localsid_next
1215#undef _
1216  },
1217};
1218/* *INDENT-ON* */
1219
1220/**
1221 * @brief SR LocalSID graph node. Supports all default SR Endpoint without decaps
1222 */
1223static uword
1224sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
1225		vlib_frame_t * from_frame)
1226{
1227  u32 n_left_from, next_index, *from, *to_next;
1228  ip6_sr_main_t *sm = &sr_main;
1229  from = vlib_frame_vector_args (from_frame);
1230  n_left_from = from_frame->n_vectors;
1231  next_index = node->cached_next_index;
1232  u32 thread_index = vm->thread_index;
1233
1234  while (n_left_from > 0)
1235    {
1236      u32 n_left_to_next;
1237      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1238
1239      /* Quad - Loop */
1240      while (n_left_from >= 8 && n_left_to_next >= 4)
1241	{
1242	  u32 bi0, bi1, bi2, bi3;
1243	  vlib_buffer_t *b0, *b1, *b2, *b3;
1244	  ip6_header_t *ip0, *ip1, *ip2, *ip3;
1245	  ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
1246	  ip6_ext_header_t *prev0, *prev1, *prev2, *prev3;
1247	  u32 next0, next1, next2, next3;
1248	  next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1249	  ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
1250
1251	  /* Prefetch next iteration. */
1252	  {
1253	    vlib_buffer_t *p4, *p5, *p6, *p7;
1254
1255	    p4 = vlib_get_buffer (vm, from[4]);
1256	    p5 = vlib_get_buffer (vm, from[5]);
1257	    p6 = vlib_get_buffer (vm, from[6]);
1258	    p7 = vlib_get_buffer (vm, from[7]);
1259
1260	    /* Prefetch the buffer header and packet for the N+2 loop iteration */
1261	    vlib_prefetch_buffer_header (p4, LOAD);
1262	    vlib_prefetch_buffer_header (p5, LOAD);
1263	    vlib_prefetch_buffer_header (p6, LOAD);
1264	    vlib_prefetch_buffer_header (p7, LOAD);
1265
1266	    CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
1267	    CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
1268	    CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
1269	    CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
1270	  }
1271
1272	  to_next[0] = bi0 = from[0];
1273	  to_next[1] = bi1 = from[1];
1274	  to_next[2] = bi2 = from[2];
1275	  to_next[3] = bi3 = from[3];
1276	  from += 4;
1277	  to_next += 4;
1278	  n_left_from -= 4;
1279	  n_left_to_next -= 4;
1280
1281	  b0 = vlib_get_buffer (vm, bi0);
1282	  b1 = vlib_get_buffer (vm, bi1);
1283	  b2 = vlib_get_buffer (vm, bi2);
1284	  b3 = vlib_get_buffer (vm, bi3);
1285
1286	  ip0 = vlib_buffer_get_current (b0);
1287	  ip1 = vlib_buffer_get_current (b1);
1288	  ip2 = vlib_buffer_get_current (b2);
1289	  ip3 = vlib_buffer_get_current (b3);
1290
1291	  sr0 =
1292	    ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, &prev0);
1293	  sr1 =
1294	    ip6_ext_header_find (vm, b1, ip1, IP_PROTOCOL_IPV6_ROUTE, &prev1);
1295	  sr2 =
1296	    ip6_ext_header_find (vm, b2, ip2, IP_PROTOCOL_IPV6_ROUTE, &prev2);
1297	  sr3 =
1298	    ip6_ext_header_find (vm, b3, ip3, IP_PROTOCOL_IPV6_ROUTE, &prev3);
1299
1300	  ls0 =
1301	    pool_elt_at_index (sm->localsids,
1302			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1303	  ls1 =
1304	    pool_elt_at_index (sm->localsids,
1305			       vnet_buffer (b1)->ip.adj_index[VLIB_TX]);
1306	  ls2 =
1307	    pool_elt_at_index (sm->localsids,
1308			       vnet_buffer (b2)->ip.adj_index[VLIB_TX]);
1309	  ls3 =
1310	    pool_elt_at_index (sm->localsids,
1311			       vnet_buffer (b3)->ip.adj_index[VLIB_TX]);
1312
1313	  end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1314			      prev0);
1315	  end_srh_processing (node, b1, ip1, sr1, ls1, &next1, ls1->end_psp,
1316			      prev1);
1317	  end_srh_processing (node, b2, ip2, sr2, ls2, &next2, ls2->end_psp,
1318			      prev2);
1319	  end_srh_processing (node, b3, ip3, sr3, ls3, &next3, ls3->end_psp,
1320			      prev3);
1321
1322	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1323	    {
1324	      sr_localsid_trace_t *tr =
1325		vlib_add_trace (vm, node, b0, sizeof (*tr));
1326	      tr->num_segments = 0;
1327	      clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1328			   sizeof (tr->localsid.as_u8));
1329	      tr->behavior = ls0->behavior;
1330	      if (ip0 == vlib_buffer_get_current (b0))
1331		{
1332		  if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1333		      && sr0->type == ROUTING_HEADER_TYPE_SR)
1334		    {
1335		      clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1336		      tr->num_segments =
1337			sr0->length * 8 / sizeof (ip6_address_t);
1338		      tr->segments_left = sr0->segments_left;
1339		    }
1340		}
1341	      else
1342		tr->num_segments = 0xFF;
1343	    }
1344
1345	  if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
1346	    {
1347	      sr_localsid_trace_t *tr =
1348		vlib_add_trace (vm, node, b1, sizeof (*tr));
1349	      tr->num_segments = 0;
1350	      clib_memcpy (tr->localsid.as_u8, ls1->localsid.as_u8,
1351			   sizeof (tr->localsid.as_u8));
1352	      tr->behavior = ls1->behavior;
1353	      if (ip1 == vlib_buffer_get_current (b1))
1354		{
1355		  if (ip1->protocol == IP_PROTOCOL_IPV6_ROUTE
1356		      && sr1->type == ROUTING_HEADER_TYPE_SR)
1357		    {
1358		      clib_memcpy (tr->sr, sr1->segments, sr1->length * 8);
1359		      tr->num_segments =
1360			sr1->length * 8 / sizeof (ip6_address_t);
1361		      tr->segments_left = sr1->segments_left;
1362		    }
1363		}
1364	      else
1365		tr->num_segments = 0xFF;
1366	    }
1367
1368	  if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
1369	    {
1370	      sr_localsid_trace_t *tr =
1371		vlib_add_trace (vm, node, b2, sizeof (*tr));
1372	      tr->num_segments = 0;
1373	      clib_memcpy (tr->localsid.as_u8, ls2->localsid.as_u8,
1374			   sizeof (tr->localsid.as_u8));
1375	      tr->behavior = ls2->behavior;
1376	      if (ip2 == vlib_buffer_get_current (b2))
1377		{
1378		  if (ip2->protocol == IP_PROTOCOL_IPV6_ROUTE
1379		      && sr2->type == ROUTING_HEADER_TYPE_SR)
1380		    {
1381		      clib_memcpy (tr->sr, sr2->segments, sr2->length * 8);
1382		      tr->num_segments =
1383			sr2->length * 8 / sizeof (ip6_address_t);
1384		      tr->segments_left = sr2->segments_left;
1385		    }
1386		}
1387	      else
1388		tr->num_segments = 0xFF;
1389	    }
1390
1391	  if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
1392	    {
1393	      sr_localsid_trace_t *tr =
1394		vlib_add_trace (vm, node, b3, sizeof (*tr));
1395	      tr->num_segments = 0;
1396	      clib_memcpy (tr->localsid.as_u8, ls3->localsid.as_u8,
1397			   sizeof (tr->localsid.as_u8));
1398	      tr->behavior = ls3->behavior;
1399	      if (ip3 == vlib_buffer_get_current (b3))
1400		{
1401		  if (ip3->protocol == IP_PROTOCOL_IPV6_ROUTE
1402		      && sr3->type == ROUTING_HEADER_TYPE_SR)
1403		    {
1404		      clib_memcpy (tr->sr, sr3->segments, sr3->length * 8);
1405		      tr->num_segments =
1406			sr3->length * 8 / sizeof (ip6_address_t);
1407		      tr->segments_left = sr3->segments_left;
1408		    }
1409		}
1410	      else
1411		tr->num_segments = 0xFF;
1412	    }
1413
1414	  vlib_increment_combined_counter
1415	    (((next0 ==
1416	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1417	      &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1418	     1, vlib_buffer_length_in_chain (vm, b0));
1419
1420	  vlib_increment_combined_counter
1421	    (((next1 ==
1422	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1423	      &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1424	     1, vlib_buffer_length_in_chain (vm, b1));
1425
1426	  vlib_increment_combined_counter
1427	    (((next2 ==
1428	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1429	      &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1430	     1, vlib_buffer_length_in_chain (vm, b2));
1431
1432	  vlib_increment_combined_counter
1433	    (((next3 ==
1434	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1435	      &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1436	     1, vlib_buffer_length_in_chain (vm, b3));
1437
1438	  vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1439					   n_left_to_next, bi0, bi1, bi2, bi3,
1440					   next0, next1, next2, next3);
1441	}
1442
1443      /* Single loop for potentially the last three packets */
1444      while (n_left_from > 0 && n_left_to_next > 0)
1445	{
1446	  u32 bi0;
1447	  vlib_buffer_t *b0;
1448	  ip6_header_t *ip0 = 0;
1449	  ip6_ext_header_t *prev0;
1450	  ip6_sr_header_t *sr0;
1451	  u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1452	  ip6_sr_localsid_t *ls0;
1453
1454	  bi0 = from[0];
1455	  to_next[0] = bi0;
1456	  from += 1;
1457	  to_next += 1;
1458	  n_left_from -= 1;
1459	  n_left_to_next -= 1;
1460
1461	  b0 = vlib_get_buffer (vm, bi0);
1462	  ip0 = vlib_buffer_get_current (b0);
1463	  sr0 =
1464	    ip6_ext_header_find (vm, b0, ip0, IP_PROTOCOL_IPV6_ROUTE, &prev0);
1465
1466	  /* Lookup the SR End behavior based on IP DA (adj) */
1467	  ls0 =
1468	    pool_elt_at_index (sm->localsids,
1469			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1470
1471	  /* SRH processing */
1472	  end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1473			      prev0);
1474
1475	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1476	    {
1477	      sr_localsid_trace_t *tr =
1478		vlib_add_trace (vm, node, b0, sizeof (*tr));
1479	      tr->num_segments = 0;
1480	      clib_memcpy (tr->localsid.as_u8, ls0->localsid.as_u8,
1481			   sizeof (tr->localsid.as_u8));
1482	      tr->behavior = ls0->behavior;
1483	      if (ip0 == vlib_buffer_get_current (b0))
1484		{
1485		  if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1486		      && sr0->type == ROUTING_HEADER_TYPE_SR)
1487		    {
1488		      clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1489		      tr->num_segments =
1490			sr0->length * 8 / sizeof (ip6_address_t);
1491		      tr->segments_left = sr0->segments_left;
1492		    }
1493		}
1494	      else
1495		tr->num_segments = 0xFF;
1496	    }
1497
1498	  vlib_increment_combined_counter
1499	    (((next0 ==
1500	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1501	      &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1502	     1, vlib_buffer_length_in_chain (vm, b0));
1503
1504	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1505					   n_left_to_next, bi0, next0);
1506	}
1507      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1508    }
1509  return from_frame->n_vectors;
1510}
1511
1512/* *INDENT-OFF* */
1513VLIB_REGISTER_NODE (sr_localsid_node) = {
1514  .function = sr_localsid_fn,
1515  .name = "sr-localsid",
1516  .vector_size = sizeof (u32),
1517  .format_trace = format_sr_localsid_trace,
1518  .type = VLIB_NODE_TYPE_INTERNAL,
1519  .n_errors = SR_LOCALSID_N_ERROR,
1520  .error_strings = sr_localsid_error_strings,
1521  .n_next_nodes = SR_LOCALSID_N_NEXT,
1522  .next_nodes = {
1523#define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1524    foreach_sr_localsid_next
1525#undef _
1526  },
1527};
1528/* *INDENT-ON* */
1529
1530static u8 *
1531format_sr_dpo (u8 * s, va_list * args)
1532{
1533  index_t index = va_arg (*args, index_t);
1534  CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
1535
1536  return (format (s, "SR: localsid_index:[%d]", index));
1537}
1538
1539const static dpo_vft_t sr_loc_vft = {
1540  .dv_lock = sr_dpo_lock,
1541  .dv_unlock = sr_dpo_unlock,
1542  .dv_format = format_sr_dpo,
1543};
1544
1545const static char *const sr_loc_ip6_nodes[] = {
1546  "sr-localsid",
1547  NULL,
1548};
1549
1550const static char *const *const sr_loc_nodes[DPO_PROTO_NUM] = {
1551  [DPO_PROTO_IP6] = sr_loc_ip6_nodes,
1552};
1553
1554const static char *const sr_loc_d_ip6_nodes[] = {
1555  "sr-localsid-d",
1556  NULL,
1557};
1558
1559const static char *const *const sr_loc_d_nodes[DPO_PROTO_NUM] = {
1560  [DPO_PROTO_IP6] = sr_loc_d_ip6_nodes,
1561};
1562
1563
1564/*************************** SR LocalSID plugins ******************************/
1565/**
1566 * @brief SR LocalSID plugin registry
1567 */
1568int
1569sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name,
1570			       u8 * keyword_str, u8 * def_str,
1571			       u8 * params_str, u8 prefix_length,
1572			       dpo_type_t * dpo,
1573			       format_function_t * ls_format,
1574			       unformat_function_t * ls_unformat,
1575			       sr_plugin_callback_t * creation_fn,
1576			       sr_plugin_callback_t * removal_fn)
1577{
1578  ip6_sr_main_t *sm = &sr_main;
1579  uword *p;
1580
1581  sr_localsid_fn_registration_t *plugin;
1582
1583  /* Did this function exist? If so update it */
1584  p = hash_get_mem (sm->plugin_functions_by_key, fn_name);
1585  if (p)
1586    {
1587      plugin = pool_elt_at_index (sm->plugin_functions, p[0]);
1588    }
1589  /* Else create a new one and set hash key */
1590  else
1591    {
1592      pool_get (sm->plugin_functions, plugin);
1593      hash_set_mem (sm->plugin_functions_by_key, fn_name,
1594		    plugin - sm->plugin_functions);
1595    }
1596
1597  clib_memset (plugin, 0, sizeof (*plugin));
1598
1599  plugin->sr_localsid_function_number = (plugin - sm->plugin_functions);
1600  plugin->sr_localsid_function_number += SR_BEHAVIOR_LAST;
1601  plugin->prefix_length = prefix_length;
1602  plugin->ls_format = ls_format;
1603  plugin->ls_unformat = ls_unformat;
1604  plugin->creation = creation_fn;
1605  plugin->removal = removal_fn;
1606  clib_memcpy (&plugin->dpo, dpo, sizeof (dpo_type_t));
1607  plugin->function_name = format (0, "%s%c", fn_name, 0);
1608  plugin->keyword_str = format (0, "%s%c", keyword_str, 0);
1609  plugin->def_str = format (0, "%s%c", def_str, 0);
1610  plugin->params_str = format (0, "%s%c", params_str, 0);
1611
1612  return plugin->sr_localsid_function_number;
1613}
1614
1615/**
1616 * @brief CLI function to 'show' all available SR LocalSID behaviors
1617 */
1618static clib_error_t *
1619show_sr_localsid_behaviors_command_fn (vlib_main_t * vm,
1620				       unformat_input_t * input,
1621				       vlib_cli_command_t * cmd)
1622{
1623  ip6_sr_main_t *sm = &sr_main;
1624  sr_localsid_fn_registration_t *plugin;
1625  sr_localsid_fn_registration_t **plugins_vec = 0;
1626  int i;
1627
1628  vlib_cli_output (vm,
1629		   "SR LocalSIDs behaviors:\n-----------------------\n\n");
1630
1631  /* *INDENT-OFF* */
1632  pool_foreach (plugin, sm->plugin_functions,
1633    ({ vec_add1 (plugins_vec, plugin); }));
1634  /* *INDENT-ON* */
1635
1636  /* Print static behaviors */
1637  vlib_cli_output (vm, "Default behaviors:\n"
1638		   "\tEnd\t-> Endpoint.\n"
1639		   "\tEnd.X\t-> Endpoint with Layer-3 cross-connect.\n"
1640		   "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1641		   "\tEnd.T\t-> Endpoint with specific IPv6 table lookup.\n"
1642		   "\t\tParameters: '<fib_table>'\n"
1643		   "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
1644		   "\t\tParameters: '<iface>'\n"
1645		   "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
1646		   "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1647		   "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
1648		   "\t\tParameters: '<iface> <ip4_next_hop>'\n"
1649		   "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
1650		   "\t\tParameters: '<ip6_fib_table>'\n"
1651		   "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
1652		   "\t\tParameters: '<ip4_fib_table>'\n");
1653  vlib_cli_output (vm, "Plugin behaviors:\n");
1654  for (i = 0; i < vec_len (plugins_vec); i++)
1655    {
1656      plugin = plugins_vec[i];
1657      vlib_cli_output (vm, "\t%s\t-> %s.\n", plugin->keyword_str,
1658		       plugin->def_str);
1659      vlib_cli_output (vm, "\t\tParameters: '%s'\n", plugin->params_str);
1660    }
1661  return 0;
1662}
1663
1664/* *INDENT-OFF* */
1665VLIB_CLI_COMMAND (show_sr_localsid_behaviors_command, static) = {
1666  .path = "show sr localsids behaviors",
1667  .short_help = "show sr localsids behaviors",
1668  .function = show_sr_localsid_behaviors_command_fn,
1669};
1670/* *INDENT-ON* */
1671
1672/**
1673 * @brief SR LocalSID initialization
1674 */
1675clib_error_t *
1676sr_localsids_init (vlib_main_t * vm)
1677{
1678  /* Init memory for function keys */
1679  ip6_sr_main_t *sm = &sr_main;
1680  mhash_init (&sm->sr_localsids_index_hash, sizeof (uword),
1681	      sizeof (ip6_address_t));
1682  /* Init SR behaviors DPO type */
1683  sr_localsid_dpo_type = dpo_register_new_type (&sr_loc_vft, sr_loc_nodes);
1684  /* Init SR behaviors DPO type */
1685  sr_localsid_d_dpo_type =
1686    dpo_register_new_type (&sr_loc_vft, sr_loc_d_nodes);
1687  /* Init memory for localsid plugins */
1688  sm->plugin_functions_by_key = hash_create_string (0, sizeof (uword));
1689  return 0;
1690}
1691
1692VLIB_INIT_FUNCTION (sr_localsids_init);
1693/*
1694* fd.io coding-style-patch-verification: ON
1695*
1696* Local Variables:
1697* eval: (c-set-style "gnu")
1698* End:
1699*/
1700