2 * sr_localsid.c: ipv6 segment routing Endpoint behaviors
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:
9 * http://www.apache.org/licenses/LICENSE-2.0
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.
20 * @brief Processing of packets with a SRH
22 * CLI to define new Segment Routing End processing functions.
23 * Graph node to support such functions.
25 * Each function associates an SRv6 segment (IPv6 address) with an specific
26 * Segment Routing function.
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>
40 #include <vppinfra/error.h>
41 #include <vppinfra/elog.h>
44 * @brief Dynamically added SR localsid DPO type
46 static dpo_type_t sr_localsid_dpo_type;
47 static dpo_type_t sr_localsid_d_dpo_type;
50 * @brief SR localsid add/del
52 * Function to add or delete SR LocalSIDs.
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.
63 * @return 0 on success, error otherwise.
66 sr_cli_localsid (char is_del, ip6_address_t * localsid_addr,
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)
70 ip6_sr_main_t *sm = &sr_main;
74 ip6_sr_localsid_t *ls = 0;
76 dpo_id_t dpo = DPO_INVALID;
78 /* Search for the item */
79 p = mhash_get (&sm->sr_localsids_index_hash, localsid_addr);
85 /* Retrieve localsid */
86 ls = pool_elt_at_index (sm->localsids, p[0]);
87 /* Delete FIB entry */
89 .fp_proto = FIB_PROTOCOL_IP6,
92 .ip6 = *localsid_addr,
96 fib_table_entry_delete (fib_table_find (FIB_PROTOCOL_IP6,
100 /* In case it is a Xconnect iface remove the (OIF, NHOP) adj */
101 if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX6
102 || ls->behavior == SR_BEHAVIOR_DX4)
103 adj_unlock (ls->nh_adj);
105 if (ls->behavior >= SR_BEHAVIOR_LAST)
107 sr_localsid_fn_registration_t *plugin = 0;
108 plugin = pool_elt_at_index (sm->plugin_functions,
109 ls->behavior - SR_BEHAVIOR_LAST);
111 /* Callback plugin removal function */
112 rv = plugin->removal (ls);
115 /* Delete localsid registry */
116 pool_put (sm->localsids, ls);
117 mhash_unset (&sm->sr_localsids_index_hash, localsid_addr, NULL);
120 else /* create with function already existing; complain */
124 /* delete; localsid does not exist; complain */
128 /* Check whether there exists a FIB entry with such address */
130 .fp_proto = FIB_PROTOCOL_IP6,
134 pfx.fp_addr.as_u64[0] = localsid_addr->as_u64[0];
135 pfx.fp_addr.as_u64[1] = localsid_addr->as_u64[1];
137 /* Lookup the FIB index associated to the table id provided */
138 u32 fib_index = fib_table_find (FIB_PROTOCOL_IP6, fib_table);
142 /* Lookup the localsid in such FIB table */
143 fib_node_index_t fei = fib_table_lookup_exact_match (fib_index, &pfx);
144 if (FIB_NODE_INDEX_INVALID != fei)
145 return -4; //There is an entry for such address (the localsid addr)
147 /* Create a new localsid registry */
148 pool_get (sm->localsids, ls);
149 memset (ls, 0, sizeof (*ls));
151 clib_memcpy (&ls->localsid, localsid_addr, sizeof (ip6_address_t));
152 ls->end_psp = end_psp;
153 ls->behavior = behavior;
154 ls->nh_adj = (u32) ~ 0;
155 ls->fib_table = fib_table;
158 case SR_BEHAVIOR_END:
161 ls->sw_if_index = sw_if_index;
162 clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
165 ls->vrf_index = sw_if_index;
167 case SR_BEHAVIOR_DX4:
168 ls->sw_if_index = sw_if_index;
169 clib_memcpy (&ls->next_hop.ip4, &nh_addr->ip4, sizeof (ip4_address_t));
171 case SR_BEHAVIOR_DX6:
172 ls->sw_if_index = sw_if_index;
173 clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
175 case SR_BEHAVIOR_DT6:
176 ls->vrf_index = sw_if_index;
178 case SR_BEHAVIOR_DT4:
179 ls->vrf_index = sw_if_index;
181 case SR_BEHAVIOR_DX2:
182 ls->sw_if_index = sw_if_index;
183 ls->vlan_index = vlan_index;
187 /* Figure out the adjacency magic for Xconnect variants */
188 if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX4
189 || ls->behavior == SR_BEHAVIOR_DX6)
191 adj_index_t nh_adj_index = ADJ_INDEX_INVALID;
193 /* Retrieve the adjacency corresponding to the (OIF, next_hop) */
194 if (ls->behavior == SR_BEHAVIOR_DX6 || ls->behavior == SR_BEHAVIOR_X)
195 nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP6, VNET_LINK_IP6,
196 nh_addr, sw_if_index);
198 else if (ls->behavior == SR_BEHAVIOR_DX4)
199 nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, VNET_LINK_IP4,
200 nh_addr, sw_if_index);
202 /* Check for ADJ creation error. If so panic */
203 if (nh_adj_index == ADJ_INDEX_INVALID)
205 pool_put (sm->localsids, ls);
209 ls->nh_adj = nh_adj_index;
213 if (ls->behavior == SR_BEHAVIOR_END || ls->behavior == SR_BEHAVIOR_X)
214 dpo_set (&dpo, sr_localsid_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
215 else if (ls->behavior > SR_BEHAVIOR_D_FIRST
216 && ls->behavior < SR_BEHAVIOR_LAST)
217 dpo_set (&dpo, sr_localsid_d_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
218 else if (ls->behavior >= SR_BEHAVIOR_LAST)
220 sr_localsid_fn_registration_t *plugin = 0;
221 plugin = pool_elt_at_index (sm->plugin_functions,
222 ls->behavior - SR_BEHAVIOR_LAST);
223 /* Copy the unformat memory result */
224 ls->plugin_mem = ls_plugin_mem;
225 /* Callback plugin creation function */
226 rv = plugin->creation (ls);
229 pool_put (sm->localsids, ls);
232 dpo_set (&dpo, plugin->dpo, DPO_PROTO_IP6, ls - sm->localsids);
235 /* Set hash key for searching localsid by address */
236 mhash_set (&sm->sr_localsids_index_hash, localsid_addr, ls - sm->localsids,
239 fib_table_entry_special_dpo_add (fib_index, &pfx, FIB_SOURCE_SR,
240 FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
243 /* Set counter to zero */
244 vlib_validate_combined_counter (&(sm->sr_ls_valid_counters),
246 vlib_validate_combined_counter (&(sm->sr_ls_invalid_counters),
249 vlib_zero_combined_counter (&(sm->sr_ls_valid_counters),
251 vlib_zero_combined_counter (&(sm->sr_ls_invalid_counters),
258 * @brief SR LocalSID CLI function.
260 * @see sr_cli_localsid
262 static clib_error_t *
263 sr_cli_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
264 vlib_cli_command_t * cmd)
266 vnet_main_t *vnm = vnet_get_main ();
267 ip6_sr_main_t *sm = &sr_main;
268 u32 sw_if_index = (u32) ~ 0, vlan_index = (u32) ~ 0, fib_index = 0;
271 ip6_address_t resulting_address;
272 ip46_address_t next_hop;
273 char address_set = 0;
275 void *ls_plugin_mem = 0;
279 memset (&resulting_address, 0, sizeof (ip6_address_t));
280 ip46_address_reset (&next_hop);
282 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
284 if (unformat (input, "del"))
286 else if (!address_set
287 && unformat (input, "address %U", unformat_ip6_address,
290 else if (!address_set
291 && unformat (input, "addr %U", unformat_ip6_address,
294 else if (unformat (input, "fib-table %u", &fib_index));
295 else if (vlan_index == (u32) ~ 0
296 && unformat (input, "vlan %u", &vlan_index));
297 else if (!behavior && unformat (input, "behavior"))
299 if (unformat (input, "end.x %U %U",
300 unformat_vnet_sw_interface, vnm, &sw_if_index,
301 unformat_ip6_address, &next_hop.ip6))
302 behavior = SR_BEHAVIOR_X;
303 else if (unformat (input, "end.t %u", &sw_if_index))
304 behavior = SR_BEHAVIOR_T;
305 else if (unformat (input, "end.dx6 %U %U",
306 unformat_vnet_sw_interface, vnm, &sw_if_index,
307 unformat_ip6_address, &next_hop.ip6))
308 behavior = SR_BEHAVIOR_DX6;
309 else if (unformat (input, "end.dx4 %U %U",
310 unformat_vnet_sw_interface, vnm, &sw_if_index,
311 unformat_ip4_address, &next_hop.ip4))
312 behavior = SR_BEHAVIOR_DX4;
313 else if (unformat (input, "end.dx2 %U",
314 unformat_vnet_sw_interface, vnm, &sw_if_index))
315 behavior = SR_BEHAVIOR_DX2;
316 else if (unformat (input, "end.dt6 %u", &sw_if_index))
317 behavior = SR_BEHAVIOR_DT6;
318 else if (unformat (input, "end.dt4 %u", &sw_if_index))
319 behavior = SR_BEHAVIOR_DT4;
322 /* Loop over all the plugin behavior format functions */
323 sr_localsid_fn_registration_t *plugin = 0, **vec_plugins = 0;
324 sr_localsid_fn_registration_t **plugin_it = 0;
326 /* Create a vector out of the plugin pool as recommended */
328 pool_foreach (plugin, sm->plugin_functions,
330 vec_add1 (vec_plugins, plugin);
334 vec_foreach (plugin_it, vec_plugins)
337 (input, "%U", (*plugin_it)->ls_unformat, &ls_plugin_mem))
339 behavior = (*plugin_it)->sr_localsid_function_number;
347 if (unformat (input, "end"))
348 behavior = SR_BEHAVIOR_END;
353 else if (!end_psp && unformat (input, "psp"))
359 if (!behavior && end_psp)
360 behavior = SR_BEHAVIOR_END;
363 return clib_error_return (0,
364 "Error: SRv6 LocalSID address is mandatory.");
365 if (!is_del && !behavior)
366 return clib_error_return (0,
367 "Error: SRv6 LocalSID behavior is mandatory.");
368 if (vlan_index != (u32) ~ 0)
369 return clib_error_return (0,
370 "Error: SRv6 End.DX2 with rewrite VLAN tag not supported by now.");
371 if (end_psp && !(behavior == SR_BEHAVIOR_END || behavior == SR_BEHAVIOR_X))
372 return clib_error_return (0,
373 "Error: SRv6 PSP only compatible with End and End.X");
375 rv = sr_cli_localsid (is_del, &resulting_address, end_psp, behavior,
376 sw_if_index, vlan_index, fib_index, &next_hop,
386 return clib_error_return (0,
387 "Identical localsid already exists. Requested localsid not created.");
389 return clib_error_return (0,
390 "The requested localsid could not be deleted. SR localsid not found");
392 return clib_error_return (0, "FIB table %u does not exist", fib_index);
394 return clib_error_return (0, "There is already one FIB entry for the"
395 "requested localsid non segment routing related");
397 return clib_error_return (0,
398 "Could not create ARP/ND entry for such next_hop. Internal error.");
400 return clib_error_return (0,
401 "Error on the plugin based localsid creation.");
403 return clib_error_return (0, "BUG: sr localsid returns %d", rv);
409 VLIB_CLI_COMMAND (sr_localsid_command, static) = {
410 .path = "sr localsid",
411 .short_help = "sr localsid (del) address XX:XX::YY:YY"
412 "(fib-table 8) behavior STRING",
414 "Create SR LocalSID and binds it to a particular behavior\n"
416 "\tlocalSID IPv6_addr(128b) LocalSID IPv6 address\n"
417 "\t(fib-table X) Optional. VRF where to install SRv6 localsid\n"
418 "\tbehavior STRING Specifies the behavior\n"
420 "\tEnd\t-> Endpoint.\n"
421 "\tEnd.X\t-> Endpoint with decapsulation and Layer-3 cross-connect.\n"
422 "\t\tParameters: '<iface> <ip6_next_hop>'\n"
423 "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
424 "\t\tParameters: '<iface>'\n"
425 "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
426 "\t\tParameters: '<iface> <ip6_next_hop>'\n"
427 "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
428 "\t\tParameters: '<iface> <ip4_next_hop>'\n"
429 "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
430 "\t\tParameters: '<ip6_fib_table>'\n"
431 "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
432 "\t\tParameters: '<ip4_fib_table>'\n",
433 .function = sr_cli_localsid_command_fn,
438 * @brief CLI function to 'show' all SR LocalSIDs on console.
440 static clib_error_t *
441 show_sr_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
442 vlib_cli_command_t * cmd)
444 vnet_main_t *vnm = vnet_get_main ();
445 ip6_sr_main_t *sm = &sr_main;
446 ip6_sr_localsid_t **localsid_list = 0;
447 ip6_sr_localsid_t *ls;
450 vlib_cli_output (vm, "SRv6 - My LocalSID Table:");
451 vlib_cli_output (vm, "=========================");
453 pool_foreach (ls, sm->localsids, ({ vec_add1 (localsid_list, ls); }));
455 for (i = 0; i < vec_len (localsid_list); i++)
457 ls = localsid_list[i];
458 switch (ls->behavior)
460 case SR_BEHAVIOR_END:
461 vlib_cli_output (vm, "\tAddress: \t%U\n\tBehavior: \tEnd",
462 format_ip6_address, &ls->localsid);
466 "\tAddress: \t%U\n\tBehavior: \tX (Endpoint with Layer-3 cross-connect)"
467 "\n\tIface: \t%U\n\tNext hop: \t%U",
468 format_ip6_address, &ls->localsid,
469 format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
470 format_ip6_address, &ls->next_hop.ip6);
474 "\tAddress: \t%U\n\tBehavior: \tT (Endpoint with specific IPv6 table lookup)"
476 format_ip6_address, &ls->localsid,
477 format_vnet_sw_if_index_name, vnm, ls->vrf_index);
479 case SR_BEHAVIOR_DX4:
481 "\tAddress: \t%U\n\tBehavior: \tDX4 (Endpoint with decapsulation and IPv4 cross-connect)"
482 "\n\tIface: \t%U\n\tNext hop: \t%U",
483 format_ip6_address, &ls->localsid,
484 format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
485 format_ip4_address, &ls->next_hop.ip4);
487 case SR_BEHAVIOR_DX6:
489 "\tAddress: \t%U\n\tBehavior: \tDX6 (Endpoint with decapsulation and IPv6 cross-connect)"
490 "\n\tIface: \t%U\n\tNext hop: \t%U",
491 format_ip6_address, &ls->localsid,
492 format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
493 format_ip6_address, &ls->next_hop.ip6);
495 case SR_BEHAVIOR_DX2:
496 if (ls->vlan_index == (u32) ~ 0)
498 "\tAddress: \t%U\n\tBehavior: \tDX2 (Endpoint with decapulation and Layer-2 cross-connect)"
499 "\n\tIface: \t%U", format_ip6_address,
500 &ls->localsid, format_vnet_sw_if_index_name, vnm,
504 "Unsupported yet. (DX2 with egress VLAN rewrite)");
506 case SR_BEHAVIOR_DT6:
508 "\tAddress: \t%U\n\tBehavior: \tDT6 (Endpoint with decapsulation and specific IPv6 table lookup)"
509 "\n\tTable: %u", format_ip6_address, &ls->localsid,
512 case SR_BEHAVIOR_DT4:
514 "\tAddress: \t%U\n\tBehavior: \tDT4 (Endpoint with decapsulation and specific IPv4 table lookup)"
515 "\n\tTable: \t%u", format_ip6_address,
516 &ls->localsid, ls->vrf_index);
519 if (ls->behavior >= SR_BEHAVIOR_LAST)
521 sr_localsid_fn_registration_t *plugin =
522 pool_elt_at_index (sm->plugin_functions,
523 ls->behavior - SR_BEHAVIOR_LAST);
525 vlib_cli_output (vm, "\tAddress: \t%U\n"
526 "\tBehavior: \t%s (%s)\n\t%U",
527 format_ip6_address, &ls->localsid,
528 plugin->keyword_str, plugin->def_str,
529 plugin->ls_format, ls->plugin_mem);
532 //Should never get here...
533 vlib_cli_output (vm, "Internal error");
537 vlib_cli_output (vm, "\tPSP: \tTrue\n");
540 vlib_counter_t valid, invalid;
541 vlib_get_combined_counter (&(sm->sr_ls_valid_counters), i, &valid);
542 vlib_get_combined_counter (&(sm->sr_ls_invalid_counters), i, &invalid);
543 vlib_cli_output (vm, "\tGood traffic: \t[%Ld packets : %Ld bytes]\n",
544 valid.packets, valid.bytes);
545 vlib_cli_output (vm, "\tBad traffic: \t[%Ld packets : %Ld bytes]\n",
546 invalid.packets, invalid.bytes);
547 vlib_cli_output (vm, "--------------------");
553 VLIB_CLI_COMMAND (show_sr_localsid_command, static) = {
554 .path = "show sr localsids",
555 .short_help = "show sr localsids",
556 .function = show_sr_localsid_command_fn,
561 * @brief Function to 'clear' ALL SR localsid counters
563 static clib_error_t *
564 clear_sr_localsid_counters_command_fn (vlib_main_t * vm,
565 unformat_input_t * input,
566 vlib_cli_command_t * cmd)
568 ip6_sr_main_t *sm = &sr_main;
570 vlib_clear_combined_counters (&(sm->sr_ls_valid_counters));
571 vlib_clear_combined_counters (&(sm->sr_ls_invalid_counters));
577 VLIB_CLI_COMMAND (clear_sr_localsid_counters_command, static) = {
578 .path = "clear sr localsid counters",
579 .short_help = "clear sr localsid counters",
580 .function = clear_sr_localsid_counters_command_fn,
584 /************************ SR LocalSID graphs node ****************************/
586 * @brief SR localsid node trace
591 ip6_address_t src, out_dst;
595 //With SRv6 header update include flags here.
596 } sr_localsid_trace_t;
598 #define foreach_sr_localsid_error \
599 _(NO_INNER_HEADER, "(SR-Error) No inner IP header") \
600 _(NO_MORE_SEGMENTS, "(SR-Error) No more segments") \
601 _(NO_SRH, "(SR-Error) No SR header") \
602 _(NO_PSP, "(SR-Error) PSP Not available (segments left > 0)") \
603 _(NOT_LS, "(SR-Error) Decaps not available (segments left > 0)") \
604 _(L2, "(SR-Error) SRv6 decapsulated a L2 frame without dest")
608 #define _(sym,str) SR_LOCALSID_ERROR_##sym,
609 foreach_sr_localsid_error
612 } sr_localsid_error_t;
614 static char *sr_localsid_error_strings[] = {
615 #define _(sym,string) string,
616 foreach_sr_localsid_error
620 #define foreach_sr_localsid_next \
621 _(ERROR, "error-drop") \
622 _(IP6_LOOKUP, "ip6-lookup") \
623 _(IP4_LOOKUP, "ip4-lookup") \
624 _(IP6_REWRITE, "ip6-rewrite") \
625 _(IP4_REWRITE, "ip4-rewrite") \
626 _(INTERFACE_OUTPUT, "interface-output")
630 #define _(s,n) SR_LOCALSID_NEXT_##s,
631 foreach_sr_localsid_next
634 } sr_localsid_next_t;
637 * @brief SR LocalSID graph node trace function
642 format_sr_localsid_trace (u8 * s, va_list * args)
644 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
645 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
646 ip6_sr_main_t *sm = &sr_main;
647 sr_localsid_trace_t *t = va_arg (*args, sr_localsid_trace_t *);
649 ip6_sr_localsid_t *ls =
650 pool_elt_at_index (sm->localsids, t->localsid_index);
653 format (s, "SR-LOCALSID:\n\tLocalsid: %U\n", format_ip6_address,
655 switch (ls->behavior)
657 case SR_BEHAVIOR_END:
658 s = format (s, "\tBehavior: End\n");
660 case SR_BEHAVIOR_DX6:
661 s = format (s, "\tBehavior: Decapsulation with IPv6 L3 xconnect\n");
663 case SR_BEHAVIOR_DX4:
664 s = format (s, "\tBehavior: Decapsulation with IPv4 L3 xconnect\n");
667 s = format (s, "\tBehavior: IPv6 L3 xconnect\n");
670 s = format (s, "\tBehavior: IPv6 specific table lookup\n");
672 case SR_BEHAVIOR_DT6:
673 s = format (s, "\tBehavior: Decapsulation with IPv6 Table lookup\n");
675 case SR_BEHAVIOR_DT4:
676 s = format (s, "\tBehavior: Decapsulation with IPv4 Table lookup\n");
678 case SR_BEHAVIOR_DX2:
679 s = format (s, "\tBehavior: Decapsulation with L2 xconnect\n");
682 s = format (s, "\tBehavior: defined in plugin\n"); //TODO
685 if (t->num_segments != 0xFF)
687 if (t->num_segments > 0)
689 s = format (s, "\tSegments left: %d\n", t->num_segments);
690 s = format (s, "\tSID list: [in ietf order]");
692 for (i = 0; i < t->num_segments; i++)
694 s = format (s, "\n\t-> %U", format_ip6_address,
695 (ip6_address_t *) & t->sr[i *
696 sizeof (ip6_address_t)]);
704 * @brief Function doing End processing.
706 static_always_inline void
707 end_srh_processing (vlib_node_runtime_t * node,
710 ip6_sr_header_t * sr0,
711 ip6_sr_localsid_t * ls0,
712 u32 * next0, u8 psp, ip6_ext_header_t * prev0)
714 ip6_address_t *new_dst0;
716 if (PREDICT_TRUE (sr0->type == ROUTING_HEADER_TYPE_SR))
718 if (sr0->segments_left == 1 && psp)
721 u64 *copy_dst0, *copy_src0;
722 u32 copy_len_u64s0 = 0;
724 ip0->dst_address.as_u64[0] = sr0->segments->as_u64[0];
725 ip0->dst_address.as_u64[1] = sr0->segments->as_u64[1];
727 /* Remove the SRH taking care of the rest of IPv6 ext header */
729 prev0->next_hdr = sr0->protocol;
731 ip0->protocol = sr0->protocol;
733 sr_len = ip6_ext_header_len (sr0);
734 vlib_buffer_advance (b0, sr_len);
735 new_l0 = clib_net_to_host_u16 (ip0->payload_length) - sr_len;
736 ip0->payload_length = clib_host_to_net_u16 (new_l0);
737 copy_src0 = (u64 *) ip0;
738 copy_dst0 = copy_src0 + (sr0->length + 1);
739 /* number of 8 octet units to copy
740 * By default in absence of extension headers it is equal to length of ip6 header
741 * With extension headers it number of 8 octet units of ext headers preceding
745 (((u8 *) sr0 - (u8 *) ip0) - sizeof (ip6_header_t)) >> 3;
746 copy_dst0[4 + copy_len_u64s0] = copy_src0[4 + copy_len_u64s0];
747 copy_dst0[3 + copy_len_u64s0] = copy_src0[3 + copy_len_u64s0];
748 copy_dst0[2 + copy_len_u64s0] = copy_src0[2 + copy_len_u64s0];
749 copy_dst0[1 + copy_len_u64s0] = copy_src0[1 + copy_len_u64s0];
750 copy_dst0[0 + copy_len_u64s0] = copy_src0[0 + copy_len_u64s0];
753 for (i = copy_len_u64s0 - 1; i >= 0; i--)
755 copy_dst0[i] = copy_src0[i];
758 if (ls0->behavior == SR_BEHAVIOR_X)
760 vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
761 *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
763 else if (ls0->behavior == SR_BEHAVIOR_T)
765 vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
768 else if (PREDICT_TRUE (sr0->segments_left > 0))
770 sr0->segments_left -= 1;
771 new_dst0 = (ip6_address_t *) (sr0->segments);
772 new_dst0 += sr0->segments_left;
773 ip0->dst_address.as_u64[0] = new_dst0->as_u64[0];
774 ip0->dst_address.as_u64[1] = new_dst0->as_u64[1];
776 if (ls0->behavior == SR_BEHAVIOR_X)
778 vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
779 *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
781 else if (ls0->behavior == SR_BEHAVIOR_T)
783 vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
788 *next0 = SR_LOCALSID_NEXT_ERROR;
789 b0->error = node->errors[SR_LOCALSID_ERROR_NO_MORE_SEGMENTS];
794 /* Error. Routing header of type != SR */
795 *next0 = SR_LOCALSID_NEXT_ERROR;
796 b0->error = node->errors[SR_LOCALSID_ERROR_NO_SRH];
801 * @brief Function doing SRH processing for D* variants
803 static_always_inline void
804 end_decaps_srh_processing (vlib_node_runtime_t * node,
807 ip6_sr_header_t * sr0,
808 ip6_sr_localsid_t * ls0, u32 * next0)
810 /* Compute the size of the IPv6 header with all Ext. headers */
812 ip6_ext_header_t *next_ext_header;
815 next_proto = ip0->protocol;
816 next_ext_header = (void *) (ip0 + 1);
817 total_size = sizeof (ip6_header_t);
818 while (ip6_ext_hdr (next_proto))
820 total_size += ip6_ext_header_len (next_ext_header);
821 next_proto = next_ext_header->next_hdr;
822 next_ext_header = ip6_ext_next_header (next_ext_header);
825 /* Ensure this is the last segment. Otherwise drop. */
826 if (sr0 && sr0->segments_left != 0)
828 *next0 = SR_LOCALSID_NEXT_ERROR;
829 b0->error = node->errors[SR_LOCALSID_ERROR_NOT_LS];
835 case IP_PROTOCOL_IPV6:
836 /* Encap-End IPv6. Pop outer IPv6 header. */
837 if (ls0->behavior == SR_BEHAVIOR_DX6)
839 vlib_buffer_advance (b0, total_size);
840 vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
841 *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
844 else if (ls0->behavior == SR_BEHAVIOR_DT6)
846 vlib_buffer_advance (b0, total_size);
847 vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
851 case IP_PROTOCOL_IP_IN_IP:
852 /* Encap-End IPv4. Pop outer IPv6 header */
853 if (ls0->behavior == SR_BEHAVIOR_DX4)
855 vlib_buffer_advance (b0, total_size);
856 vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
857 *next0 = SR_LOCALSID_NEXT_IP4_REWRITE;
860 else if (ls0->behavior == SR_BEHAVIOR_DT4)
862 vlib_buffer_advance (b0, total_size);
863 vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->vrf_index;
864 *next0 = SR_LOCALSID_NEXT_IP4_LOOKUP;
868 case IP_PROTOCOL_IP6_NONXT:
870 if (ls0->behavior == SR_BEHAVIOR_DX2)
872 vlib_buffer_advance (b0, total_size);
873 vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->sw_if_index;
874 *next0 = SR_LOCALSID_NEXT_INTERFACE_OUTPUT;
879 *next0 = SR_LOCALSID_NEXT_ERROR;
880 b0->error = node->errors[SR_LOCALSID_ERROR_NO_INNER_HEADER];
885 * @brief SR LocalSID graph node. Supports all default SR Endpoint variants
888 sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
889 vlib_frame_t * from_frame)
891 u32 n_left_from, next_index, *from, *to_next;
892 ip6_sr_main_t *sm = &sr_main;
893 from = vlib_frame_vector_args (from_frame);
894 n_left_from = from_frame->n_vectors;
895 next_index = node->cached_next_index;
896 u32 thread_index = vlib_get_thread_index ();
898 while (n_left_from > 0)
901 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
904 while (n_left_from >= 8 && n_left_to_next >= 4)
906 u32 bi0, bi1, bi2, bi3;
907 vlib_buffer_t *b0, *b1, *b2, *b3;
908 ip6_header_t *ip0, *ip1, *ip2, *ip3;
909 ip6_ext_header_t *prev0, *prev1, *prev2, *prev3;
910 ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
911 u32 next0, next1, next2, next3;
912 next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
913 ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
915 /* Prefetch next iteration. */
917 vlib_buffer_t *p4, *p5, *p6, *p7;
919 p4 = vlib_get_buffer (vm, from[4]);
920 p5 = vlib_get_buffer (vm, from[5]);
921 p6 = vlib_get_buffer (vm, from[6]);
922 p7 = vlib_get_buffer (vm, from[7]);
924 /* Prefetch the buffer header and packet for the N+4 loop iteration */
925 vlib_prefetch_buffer_header (p4, LOAD);
926 vlib_prefetch_buffer_header (p5, LOAD);
927 vlib_prefetch_buffer_header (p6, LOAD);
928 vlib_prefetch_buffer_header (p7, LOAD);
930 CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
931 CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
932 CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
933 CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
936 to_next[0] = bi0 = from[0];
937 to_next[1] = bi1 = from[1];
938 to_next[2] = bi2 = from[2];
939 to_next[3] = bi3 = from[3];
945 b0 = vlib_get_buffer (vm, bi0);
946 b1 = vlib_get_buffer (vm, bi1);
947 b2 = vlib_get_buffer (vm, bi2);
948 b3 = vlib_get_buffer (vm, bi3);
951 pool_elt_at_index (sm->localsids,
952 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
954 pool_elt_at_index (sm->localsids,
955 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
957 pool_elt_at_index (sm->localsids,
958 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
960 pool_elt_at_index (sm->localsids,
961 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
963 ip0 = vlib_buffer_get_current (b0);
964 ip1 = vlib_buffer_get_current (b1);
965 ip2 = vlib_buffer_get_current (b2);
966 ip3 = vlib_buffer_get_current (b3);
968 ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE);
969 ip6_ext_header_find_t (ip1, prev1, sr1, IP_PROTOCOL_IPV6_ROUTE);
970 ip6_ext_header_find_t (ip2, prev2, sr2, IP_PROTOCOL_IPV6_ROUTE);
971 ip6_ext_header_find_t (ip3, prev3, sr3, IP_PROTOCOL_IPV6_ROUTE);
973 end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
974 end_decaps_srh_processing (node, b1, ip1, sr1, ls1, &next1);
975 end_decaps_srh_processing (node, b2, ip2, sr2, ls2, &next2);
976 end_decaps_srh_processing (node, b3, ip3, sr3, ls3, &next3);
980 vlib_increment_combined_counter
982 SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
983 &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
984 1, vlib_buffer_length_in_chain (vm, b0));
986 vlib_increment_combined_counter
988 SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
989 &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
990 1, vlib_buffer_length_in_chain (vm, b1));
992 vlib_increment_combined_counter
994 SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
995 &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
996 1, vlib_buffer_length_in_chain (vm, b2));
998 vlib_increment_combined_counter
1000 SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1001 &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1002 1, vlib_buffer_length_in_chain (vm, b3));
1004 vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1005 n_left_to_next, bi0, bi1, bi2, bi3,
1006 next0, next1, next2, next3);
1009 /* Single loop for potentially the last three packets */
1010 while (n_left_from > 0 && n_left_to_next > 0)
1015 ip6_ext_header_t *prev0;
1016 ip6_sr_header_t *sr0;
1017 u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1018 ip6_sr_localsid_t *ls0;
1025 n_left_to_next -= 1;
1027 b0 = vlib_get_buffer (vm, bi0);
1028 ip0 = vlib_buffer_get_current (b0);
1030 /* Lookup the SR End behavior based on IP DA (adj) */
1032 pool_elt_at_index (sm->localsids,
1033 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1035 /* Find SRH as well as previous header */
1036 ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE);
1038 /* SRH processing and End variants */
1039 end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
1041 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1043 sr_localsid_trace_t *tr =
1044 vlib_add_trace (vm, node, b0, sizeof (*tr));
1045 tr->num_segments = 0;
1046 tr->localsid_index = ls0 - sm->localsids;
1048 if (ip0 == vlib_buffer_get_current (b0))
1050 clib_memcpy (tr->src.as_u8, ip0->src_address.as_u8,
1051 sizeof (tr->src.as_u8));
1052 clib_memcpy (tr->out_dst.as_u8, ip0->dst_address.as_u8,
1053 sizeof (tr->out_dst.as_u8));
1054 if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1055 && sr0->type == ROUTING_HEADER_TYPE_SR)
1057 clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1059 sr0->length * 8 / sizeof (ip6_address_t);
1060 tr->segments_left = sr0->segments_left;
1064 tr->num_segments = 0xFF;
1067 /* Increase the counters */
1068 vlib_increment_combined_counter
1070 SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1071 &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1072 1, vlib_buffer_length_in_chain (vm, b0));
1074 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1075 n_left_to_next, bi0, next0);
1077 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1079 return from_frame->n_vectors;
1083 VLIB_REGISTER_NODE (sr_localsid_d_node) = {
1084 .function = sr_localsid_d_fn,
1085 .name = "sr-localsid-d",
1086 .vector_size = sizeof (u32),
1087 .format_trace = format_sr_localsid_trace,
1088 .type = VLIB_NODE_TYPE_INTERNAL,
1089 .n_errors = SR_LOCALSID_N_ERROR,
1090 .error_strings = sr_localsid_error_strings,
1091 .n_next_nodes = SR_LOCALSID_N_NEXT,
1093 #define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1094 foreach_sr_localsid_next
1101 * @brief SR LocalSID graph node. Supports all default SR Endpoint variants
1104 sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
1105 vlib_frame_t * from_frame)
1107 u32 n_left_from, next_index, *from, *to_next;
1108 ip6_sr_main_t *sm = &sr_main;
1109 from = vlib_frame_vector_args (from_frame);
1110 n_left_from = from_frame->n_vectors;
1111 next_index = node->cached_next_index;
1112 u32 thread_index = vlib_get_thread_index ();
1114 while (n_left_from > 0)
1117 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
1120 while (n_left_from >= 8 && n_left_to_next >= 4)
1122 u32 bi0, bi1, bi2, bi3;
1123 vlib_buffer_t *b0, *b1, *b2, *b3;
1124 ip6_header_t *ip0, *ip1, *ip2, *ip3;
1125 ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
1126 ip6_ext_header_t *prev0, *prev1, *prev2, *prev3;
1127 u32 next0, next1, next2, next3;
1128 next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1129 ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
1131 /* Prefetch next iteration. */
1133 vlib_buffer_t *p4, *p5, *p6, *p7;
1135 p4 = vlib_get_buffer (vm, from[4]);
1136 p5 = vlib_get_buffer (vm, from[5]);
1137 p6 = vlib_get_buffer (vm, from[6]);
1138 p7 = vlib_get_buffer (vm, from[7]);
1140 /* Prefetch the buffer header and packet for the N+2 loop iteration */
1141 vlib_prefetch_buffer_header (p4, LOAD);
1142 vlib_prefetch_buffer_header (p5, LOAD);
1143 vlib_prefetch_buffer_header (p6, LOAD);
1144 vlib_prefetch_buffer_header (p7, LOAD);
1146 CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
1147 CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
1148 CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
1149 CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
1152 to_next[0] = bi0 = from[0];
1153 to_next[1] = bi1 = from[1];
1154 to_next[2] = bi2 = from[2];
1155 to_next[3] = bi3 = from[3];
1159 n_left_to_next -= 4;
1161 b0 = vlib_get_buffer (vm, bi0);
1162 b1 = vlib_get_buffer (vm, bi1);
1163 b2 = vlib_get_buffer (vm, bi2);
1164 b3 = vlib_get_buffer (vm, bi3);
1166 ip0 = vlib_buffer_get_current (b0);
1167 ip1 = vlib_buffer_get_current (b1);
1168 ip2 = vlib_buffer_get_current (b2);
1169 ip3 = vlib_buffer_get_current (b3);
1171 ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE);
1172 ip6_ext_header_find_t (ip1, prev1, sr1, IP_PROTOCOL_IPV6_ROUTE);
1173 ip6_ext_header_find_t (ip2, prev2, sr2, IP_PROTOCOL_IPV6_ROUTE);
1174 ip6_ext_header_find_t (ip3, prev3, sr3, IP_PROTOCOL_IPV6_ROUTE);
1177 pool_elt_at_index (sm->localsids,
1178 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1180 pool_elt_at_index (sm->localsids,
1181 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1183 pool_elt_at_index (sm->localsids,
1184 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1186 pool_elt_at_index (sm->localsids,
1187 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1189 end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1191 end_srh_processing (node, b1, ip1, sr1, ls1, &next1, ls1->end_psp,
1193 end_srh_processing (node, b2, ip2, sr2, ls2, &next2, ls2->end_psp,
1195 end_srh_processing (node, b3, ip3, sr3, ls3, &next3, ls3->end_psp,
1198 //TODO: proper trace.
1200 vlib_increment_combined_counter
1202 SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1203 &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1204 1, vlib_buffer_length_in_chain (vm, b0));
1206 vlib_increment_combined_counter
1208 SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1209 &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
1210 1, vlib_buffer_length_in_chain (vm, b1));
1212 vlib_increment_combined_counter
1214 SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1215 &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
1216 1, vlib_buffer_length_in_chain (vm, b2));
1218 vlib_increment_combined_counter
1220 SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1221 &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
1222 1, vlib_buffer_length_in_chain (vm, b3));
1224 vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
1225 n_left_to_next, bi0, bi1, bi2, bi3,
1226 next0, next1, next2, next3);
1229 /* Single loop for potentially the last three packets */
1230 while (n_left_from > 0 && n_left_to_next > 0)
1234 ip6_header_t *ip0 = 0;
1235 ip6_ext_header_t *prev0;
1236 ip6_sr_header_t *sr0;
1237 u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
1238 ip6_sr_localsid_t *ls0;
1245 n_left_to_next -= 1;
1247 b0 = vlib_get_buffer (vm, bi0);
1248 ip0 = vlib_buffer_get_current (b0);
1249 ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE);
1251 /* Lookup the SR End behavior based on IP DA (adj) */
1253 pool_elt_at_index (sm->localsids,
1254 vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
1256 /* SRH processing */
1257 end_srh_processing (node, b0, ip0, sr0, ls0, &next0, ls0->end_psp,
1260 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
1262 sr_localsid_trace_t *tr =
1263 vlib_add_trace (vm, node, b0, sizeof (*tr));
1264 tr->num_segments = 0;
1265 tr->localsid_index = ls0 - sm->localsids;
1267 if (ip0 == vlib_buffer_get_current (b0))
1269 clib_memcpy (tr->src.as_u8, ip0->src_address.as_u8,
1270 sizeof (tr->src.as_u8));
1271 clib_memcpy (tr->out_dst.as_u8, ip0->dst_address.as_u8,
1272 sizeof (tr->out_dst.as_u8));
1273 if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
1274 && sr0->type == ROUTING_HEADER_TYPE_SR)
1276 clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
1278 sr0->length * 8 / sizeof (ip6_address_t);
1279 tr->segments_left = sr0->segments_left;
1284 tr->num_segments = 0xFF;
1288 vlib_increment_combined_counter
1290 SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
1291 &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
1292 1, vlib_buffer_length_in_chain (vm, b0));
1294 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
1295 n_left_to_next, bi0, next0);
1297 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
1299 return from_frame->n_vectors;
1303 VLIB_REGISTER_NODE (sr_localsid_node) = {
1304 .function = sr_localsid_fn,
1305 .name = "sr-localsid",
1306 .vector_size = sizeof (u32),
1307 .format_trace = format_sr_localsid_trace,
1308 .type = VLIB_NODE_TYPE_INTERNAL,
1309 .n_errors = SR_LOCALSID_N_ERROR,
1310 .error_strings = sr_localsid_error_strings,
1311 .n_next_nodes = SR_LOCALSID_N_NEXT,
1313 #define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
1314 foreach_sr_localsid_next
1321 format_sr_dpo (u8 * s, va_list * args)
1323 index_t index = va_arg (*args, index_t);
1324 CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
1326 return (format (s, "SR: localsid_index:[%d]", index));
1329 const static dpo_vft_t sr_loc_vft = {
1330 .dv_lock = sr_dpo_lock,
1331 .dv_unlock = sr_dpo_unlock,
1332 .dv_format = format_sr_dpo,
1335 const static char *const sr_loc_ip6_nodes[] = {
1340 const static char *const *const sr_loc_nodes[DPO_PROTO_NUM] = {
1341 [DPO_PROTO_IP6] = sr_loc_ip6_nodes,
1344 const static char *const sr_loc_d_ip6_nodes[] = {
1349 const static char *const *const sr_loc_d_nodes[DPO_PROTO_NUM] = {
1350 [DPO_PROTO_IP6] = sr_loc_d_ip6_nodes,
1354 /*************************** SR LocalSID plugins ******************************/
1356 * @brief SR LocalSID plugin registry
1359 sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name,
1360 u8 * keyword_str, u8 * def_str,
1361 u8 * params_str, dpo_type_t * dpo,
1362 format_function_t * ls_format,
1363 unformat_function_t * ls_unformat,
1364 sr_plugin_callback_t * creation_fn,
1365 sr_plugin_callback_t * removal_fn)
1367 ip6_sr_main_t *sm = &sr_main;
1370 sr_localsid_fn_registration_t *plugin;
1372 /* Did this function exist? If so update it */
1373 p = hash_get_mem (sm->plugin_functions_by_key, fn_name);
1376 plugin = pool_elt_at_index (sm->plugin_functions, p[0]);
1378 /* Else create a new one and set hash key */
1381 pool_get (sm->plugin_functions, plugin);
1382 hash_set_mem (sm->plugin_functions_by_key, fn_name,
1383 plugin - sm->plugin_functions);
1386 memset (plugin, 0, sizeof (*plugin));
1388 plugin->sr_localsid_function_number = (plugin - sm->plugin_functions);
1389 plugin->sr_localsid_function_number += SR_BEHAVIOR_LAST;
1390 plugin->ls_format = ls_format;
1391 plugin->ls_unformat = ls_unformat;
1392 plugin->creation = creation_fn;
1393 plugin->removal = removal_fn;
1394 clib_memcpy (&plugin->dpo, dpo, sizeof (dpo_type_t));
1395 plugin->function_name = format (0, "%s%c", fn_name, 0);
1396 plugin->keyword_str = format (0, "%s%c", keyword_str, 0);
1397 plugin->def_str = format (0, "%s%c", def_str, 0);
1398 plugin->params_str = format (0, "%s%c", params_str, 0);
1400 return plugin->sr_localsid_function_number;
1404 * @brief CLI function to 'show' all available SR LocalSID behaviors
1406 static clib_error_t *
1407 show_sr_localsid_behaviors_command_fn (vlib_main_t * vm,
1408 unformat_input_t * input,
1409 vlib_cli_command_t * cmd)
1411 ip6_sr_main_t *sm = &sr_main;
1412 sr_localsid_fn_registration_t *plugin;
1413 sr_localsid_fn_registration_t **plugins_vec = 0;
1416 vlib_cli_output (vm,
1417 "SR LocalSIDs behaviors:\n-----------------------\n\n");
1420 pool_foreach (plugin, sm->plugin_functions,
1421 ({ vec_add1 (plugins_vec, plugin); }));
1424 /* Print static behaviors */
1425 vlib_cli_output (vm, "Default behaviors:\n"
1426 "\tEnd\t-> Endpoint.\n"
1427 "\tEnd.X\t-> Endpoint with Layer-3 cross-connect.\n"
1428 "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1429 "\tEnd.T\t-> Endpoint with specific IPv6 table lookup.\n"
1430 "\t\tParameters: '<fib_table>'\n"
1431 "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
1432 "\t\tParameters: '<iface>'\n"
1433 "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
1434 "\t\tParameters: '<iface> <ip6_next_hop>'\n"
1435 "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
1436 "\t\tParameters: '<iface> <ip4_next_hop>'\n"
1437 "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
1438 "\t\tParameters: '<ip6_fib_table>'\n"
1439 "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
1440 "\t\tParameters: '<ip4_fib_table>'\n");
1441 vlib_cli_output (vm, "Plugin behaviors:\n");
1442 for (i = 0; i < vec_len (plugins_vec); i++)
1444 plugin = plugins_vec[i];
1445 vlib_cli_output (vm, "\t%s\t-> %s.\n", plugin->keyword_str,
1447 vlib_cli_output (vm, "\t\tParameters: '%s'\n", plugin->params_str);
1453 VLIB_CLI_COMMAND (show_sr_localsid_behaviors_command, static) = {
1454 .path = "show sr localsids behaviors",
1455 .short_help = "show sr localsids behaviors",
1456 .function = show_sr_localsid_behaviors_command_fn,
1461 * @brief SR LocalSID initialization
1464 sr_localsids_init (vlib_main_t * vm)
1466 /* Init memory for function keys */
1467 ip6_sr_main_t *sm = &sr_main;
1468 mhash_init (&sm->sr_localsids_index_hash, sizeof (uword),
1469 sizeof (ip6_address_t));
1470 /* Init SR behaviors DPO type */
1471 sr_localsid_dpo_type = dpo_register_new_type (&sr_loc_vft, sr_loc_nodes);
1472 /* Init SR behaviors DPO type */
1473 sr_localsid_d_dpo_type =
1474 dpo_register_new_type (&sr_loc_vft, sr_loc_d_nodes);
1475 /* Init memory for localsid plugins */
1476 sm->plugin_functions_by_key = hash_create_string (0, sizeof (uword));
1480 VLIB_INIT_FUNCTION (sr_localsids_init);
1482 * fd.io coding-style-patch-verification: ON
1485 * eval: (c-set-style "gnu")