2 * Copyright (c) 2016 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
18 * @brief Common utility functions for LISP-GPE interfaces.
22 #include <vppinfra/error.h>
23 #include <vppinfra/hash.h>
24 #include <vnet/vnet.h>
25 #include <vnet/ip/ip.h>
26 #include <vnet/udp/udp.h>
27 #include <vnet/ethernet/ethernet.h>
28 #include <vnet/lisp-gpe/lisp_gpe.h>
29 #include <vnet/lisp-gpe/lisp_gpe_fwd_entry.h>
30 #include <vnet/lisp-gpe/lisp_gpe_tenant.h>
31 #include <vnet/lisp-gpe/lisp_gpe_adjacency.h>
32 #include <vnet/adj/adj.h>
33 #include <vnet/fib/fib_table.h>
34 #include <vnet/fib/ip4_fib.h>
35 #include <vnet/fib/ip6_fib.h>
36 #include <vnet/lisp-cp/lisp_cp_dpo.h>
39 * @brief The VLIB node arc/edge from the interface's TX node, to the L2
40 * load-balanceing node. Which is where all packets go
42 static uword l2_arc_to_lb;
44 #define foreach_lisp_gpe_tx_next \
45 _(DROP, "error-drop") \
46 _(IP4_LOOKUP, "ip4-lookup") \
47 _(IP6_LOOKUP, "ip6-lookup")
51 #define _(sym,str) LISP_GPE_TX_NEXT_##sym,
52 foreach_lisp_gpe_tx_next
60 } lisp_gpe_tx_trace_t;
63 format_lisp_gpe_tx_trace (u8 * s, va_list * args)
65 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
66 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
67 lisp_gpe_tx_trace_t *t = va_arg (*args, lisp_gpe_tx_trace_t *);
69 s = format (s, "LISP-GPE-TX: tunnel %d", t->tunnel_index);
73 #define is_v4_packet(_h) ((*(u8*) _h) & 0xF0) == 0x40
76 * @brief LISP-GPE interface TX (encap) function.
77 * @node lisp_gpe_interface_tx
79 * The LISP-GPE interface TX (encap) function.
81 * Looks up the associated tunnel based on the adjacency hit in the SD FIB
82 * and if the tunnel is multihomed it uses the flow hash to determine
83 * sub-tunnel, and rewrite string, to be used to encapsulate the packet.
85 * @param[in] vm vlib_main_t corresponding to the current thread.
86 * @param[in] node vlib_node_runtime_t data for this node.
87 * @param[in] frame vlib_frame_t whose contents should be dispatched.
89 * @return number of vectors in frame.
92 lisp_gpe_interface_tx (vlib_main_t * vm, vlib_node_runtime_t * node,
93 vlib_frame_t * from_frame)
95 u32 n_left_from, next_index, *from, *to_next;
96 lisp_gpe_main_t *lgm = &lisp_gpe_main;
98 from = vlib_frame_vector_args (from_frame);
99 n_left_from = from_frame->n_vectors;
101 next_index = node->cached_next_index;
103 while (n_left_from > 0)
107 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
109 while (n_left_from > 0 && n_left_to_next > 0)
111 u32 bi0, adj_index0, next0;
112 const ip_adjacency_t *adj0;
113 const dpo_id_t *dpo0;
124 b0 = vlib_get_buffer (vm, bi0);
126 /* Fixup the checksum and len fields in the LISP tunnel encap
127 * that was applied at the midchain node */
128 is_v4_0 = is_v4_packet (vlib_buffer_get_current (b0));
129 ip_udp_fixup_one (lgm->vlib_main, b0, is_v4_0);
131 /* Follow the DPO on which the midchain is stacked */
132 adj_index0 = vnet_buffer (b0)->ip.adj_index[VLIB_TX];
133 adj0 = adj_get (adj_index0);
134 dpo0 = &adj0->sub_type.midchain.next_dpo;
135 next0 = dpo0->dpoi_next_node;
136 vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
138 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
140 lisp_gpe_tx_trace_t *tr = vlib_add_trace (vm, node, b0,
142 tr->tunnel_index = adj_index0;
144 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
145 n_left_to_next, bi0, next0);
148 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
151 return from_frame->n_vectors;
155 format_lisp_gpe_name (u8 * s, va_list * args)
157 u32 dev_instance = va_arg (*args, u32);
158 return format (s, "lisp_gpe%d", dev_instance);
162 VNET_DEVICE_CLASS (lisp_gpe_device_class) = {
164 .format_device_name = format_lisp_gpe_name,
165 .format_tx_trace = format_lisp_gpe_tx_trace,
166 .tx_function = lisp_gpe_interface_tx,
171 format_lisp_gpe_header_with_length (u8 * s, va_list * args)
173 lisp_gpe_header_t *h = va_arg (*args, lisp_gpe_header_t *);
174 u32 max_header_bytes = va_arg (*args, u32);
177 header_bytes = sizeof (h[0]);
178 if (max_header_bytes != 0 && header_bytes > max_header_bytes)
179 return format (s, "lisp-gpe header truncated");
181 s = format (s, "flags: ");
182 #define _(n,v) if (h->flags & v) s = format (s, "%s ", #n);
183 foreach_lisp_gpe_flag_bit;
186 s = format (s, "\n ver_res %d res %d next_protocol %d iid %d(%x)",
187 h->ver_res, h->res, h->next_protocol,
188 clib_net_to_host_u32 (h->iid << 8),
189 clib_net_to_host_u32 (h->iid << 8));
194 VNET_HW_INTERFACE_CLASS (lisp_gpe_hw_class) = {
196 .format_header = format_lisp_gpe_header_with_length,
197 .build_rewrite = lisp_gpe_build_rewrite,
198 .update_adjacency = lisp_gpe_update_adjacency,
206 } l2_lisp_gpe_tx_trace_t;
209 format_l2_lisp_gpe_tx_trace (u8 * s, va_list * args)
211 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
212 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
213 l2_lisp_gpe_tx_trace_t *t = va_arg (*args, l2_lisp_gpe_tx_trace_t *);
215 s = format (s, "L2-LISP-GPE-TX: load-balance %d", t->dpo_index);
220 * @brief LISP-GPE interface TX (encap) function for L2 overlays.
221 * @node l2_lisp_gpe_interface_tx
223 * The L2 LISP-GPE interface TX (encap) function.
225 * Uses bridge domain index, source and destination ethernet addresses to
226 * lookup tunnel. If the tunnel is multihomed a flow has is used to determine
227 * the sub-tunnel and therefore the rewrite string to be used to encapsulate
230 * @param[in] vm vlib_main_t corresponding to the current thread.
231 * @param[in] node vlib_node_runtime_t data for this node.
232 * @param[in] frame vlib_frame_t whose contents should be dispatched.
234 * @return number of vectors in frame.
237 l2_lisp_gpe_interface_tx (vlib_main_t * vm, vlib_node_runtime_t * node,
238 vlib_frame_t * from_frame)
240 u32 n_left_from, next_index, *from, *to_next;
241 lisp_gpe_main_t *lgm = &lisp_gpe_main;
242 u32 thread_index = vlib_get_thread_index ();
243 vlib_combined_counter_main_t *cm = &load_balance_main.lbm_to_counters;
245 from = vlib_frame_vector_args (from_frame);
246 n_left_from = from_frame->n_vectors;
248 next_index = node->cached_next_index;
250 while (n_left_from > 0)
254 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
256 while (n_left_from > 0 && n_left_to_next > 0)
260 ethernet_header_t *e0;
269 b0 = vlib_get_buffer (vm, bi0);
270 e0 = vlib_buffer_get_current (b0);
272 vnet_buffer (b0)->lisp.overlay_afi = LISP_AFI_MAC;
274 /* lookup dst + src mac */
275 lbi0 = lisp_l2_fib_lookup (lgm, vnet_buffer (b0)->l2.bd_index,
276 e0->src_address, e0->dst_address);
277 vnet_buffer (b0)->ip.adj_index[VLIB_TX] = lbi0;
279 vlib_increment_combined_counter (cm, thread_index, lbi0, 1,
280 vlib_buffer_length_in_chain (vm,
282 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
284 l2_lisp_gpe_tx_trace_t *tr = vlib_add_trace (vm, node, b0,
286 tr->dpo_index = lbi0;
288 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
289 n_left_to_next, bi0, l2_arc_to_lb);
292 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
295 return from_frame->n_vectors;
299 format_l2_lisp_gpe_name (u8 * s, va_list * args)
301 u32 dev_instance = va_arg (*args, u32);
302 return format (s, "l2_lisp_gpe%d", dev_instance);
306 VNET_DEVICE_CLASS (l2_lisp_gpe_device_class,static) = {
307 .name = "L2_LISP_GPE",
308 .format_device_name = format_l2_lisp_gpe_name,
309 .format_tx_trace = format_l2_lisp_gpe_tx_trace,
310 .tx_function = l2_lisp_gpe_interface_tx,
317 } nsh_lisp_gpe_tx_trace_t;
320 format_nsh_lisp_gpe_tx_trace (u8 * s, va_list * args)
322 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
323 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
324 nsh_lisp_gpe_tx_trace_t *t = va_arg (*args, nsh_lisp_gpe_tx_trace_t *);
326 s = format (s, "NSH-GPE-TX: tunnel %d", t->dpo_index);
331 * @brief LISP-GPE interface TX for NSH overlays.
332 * @node nsh_lisp_gpe_interface_tx
334 * The NSH LISP-GPE interface TX function.
336 * @param[in] vm vlib_main_t corresponding to the current thread.
337 * @param[in] node vlib_node_runtime_t data for this node.
338 * @param[in] frame vlib_frame_t whose contents should be dispatched.
340 * @return number of vectors in frame.
343 nsh_lisp_gpe_interface_tx (vlib_main_t * vm, vlib_node_runtime_t * node,
344 vlib_frame_t * from_frame)
346 u32 n_left_from, next_index, *from, *to_next;
347 lisp_gpe_main_t *lgm = &lisp_gpe_main;
349 from = vlib_frame_vector_args (from_frame);
350 n_left_from = from_frame->n_vectors;
352 next_index = node->cached_next_index;
354 while (n_left_from > 0)
358 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
360 while (n_left_from > 0 && n_left_to_next > 0)
365 const dpo_id_t *dpo0;
374 b0 = vlib_get_buffer (vm, bi0);
375 nsh0 = vlib_buffer_get_current (b0);
377 vnet_buffer (b0)->lisp.overlay_afi = LISP_AFI_LCAF;
379 /* lookup SPI + SI (second word of the NSH header).
380 * NB: Load balancing was done by the control plane */
381 dpo0 = lisp_nsh_fib_lookup (lgm, nsh0[1]);
383 next0 = dpo0->dpoi_next_node;
384 vnet_buffer (b0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index;
386 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
388 nsh_lisp_gpe_tx_trace_t *tr = vlib_add_trace (vm, node, b0,
390 tr->dpo_index = dpo0->dpoi_index;
392 vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
393 n_left_to_next, bi0, next0);
396 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
399 return from_frame->n_vectors;
403 format_nsh_lisp_gpe_name (u8 * s, va_list * args)
405 u32 dev_instance = va_arg (*args, u32);
406 return format (s, "nsh_lisp_gpe%d", dev_instance);
410 VNET_DEVICE_CLASS (nsh_lisp_gpe_device_class,static) = {
411 .name = "NSH_LISP_GPE",
412 .format_device_name = format_nsh_lisp_gpe_name,
413 .format_tx_trace = format_nsh_lisp_gpe_tx_trace,
414 .tx_function = nsh_lisp_gpe_interface_tx,
418 static vnet_hw_interface_t *
419 lisp_gpe_create_iface (lisp_gpe_main_t * lgm, u32 vni, u32 dp_table,
420 vnet_device_class_t * dev_class,
421 tunnel_lookup_t * tuns)
424 u32 hw_if_index = ~0;
426 vnet_hw_interface_t *hi;
427 vnet_main_t *vnm = lgm->vnet_main;
429 /* create hw lisp_gpeX iface if needed, otherwise reuse existing */
430 flen = vec_len (lgm->free_tunnel_hw_if_indices);
433 hw_if_index = lgm->free_tunnel_hw_if_indices[flen - 1];
434 _vec_len (lgm->free_tunnel_hw_if_indices) -= 1;
436 hi = vnet_get_hw_interface (vnm, hw_if_index);
438 /* rename interface */
439 new_name = format (0, "%U", dev_class->format_device_name, vni);
441 vec_add1 (new_name, 0);
442 vnet_rename_interface (vnm, hw_if_index, (char *) new_name);
445 /* clear old stats of freed interface before reuse */
446 vnet_interface_main_t *im = &vnm->interface_main;
447 vnet_interface_counter_lock (im);
448 vlib_zero_combined_counter (&im->combined_sw_if_counters
449 [VNET_INTERFACE_COUNTER_TX],
451 vlib_zero_combined_counter (&im->combined_sw_if_counters
452 [VNET_INTERFACE_COUNTER_RX],
454 vlib_zero_simple_counter (&im->sw_if_counters
455 [VNET_INTERFACE_COUNTER_DROP],
457 vnet_interface_counter_unlock (im);
461 hw_if_index = vnet_register_interface (vnm, dev_class->index, vni,
462 lisp_gpe_hw_class.index, 0);
463 hi = vnet_get_hw_interface (vnm, hw_if_index);
466 hash_set (tuns->hw_if_index_by_dp_table, dp_table, hw_if_index);
468 /* set tunnel termination: post decap, packets are tagged as having been
469 * originated by lisp-gpe interface */
470 hash_set (tuns->sw_if_index_by_vni, vni, hi->sw_if_index);
471 hash_set (tuns->vni_by_sw_if_index, hi->sw_if_index, vni);
477 lisp_gpe_remove_iface (lisp_gpe_main_t * lgm, u32 hi_index, u32 dp_table,
478 tunnel_lookup_t * tuns)
480 vnet_main_t *vnm = lgm->vnet_main;
481 vnet_hw_interface_t *hi;
484 hi = vnet_get_hw_interface (vnm, hi_index);
486 /* disable interface */
487 vnet_sw_interface_set_flags (vnm, hi->sw_if_index, 0 /* down */ );
488 vnet_hw_interface_set_flags (vnm, hi->hw_if_index, 0 /* down */ );
489 hash_unset (tuns->hw_if_index_by_dp_table, dp_table);
490 vec_add1 (lgm->free_tunnel_hw_if_indices, hi->hw_if_index);
492 /* clean tunnel termination and vni to sw_if_index binding */
493 vnip = hash_get (tuns->vni_by_sw_if_index, hi->sw_if_index);
496 clib_warning ("No vni associated to interface %d", hi->sw_if_index);
499 hash_unset (tuns->sw_if_index_by_vni, vnip[0]);
500 hash_unset (tuns->vni_by_sw_if_index, hi->sw_if_index);
504 lisp_gpe_iface_set_table (u32 sw_if_index, u32 table_id)
506 fib_node_index_t fib_index;
508 fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP4, table_id,
510 vec_validate (ip4_main.fib_index_by_sw_if_index, sw_if_index);
511 ip4_main.fib_index_by_sw_if_index[sw_if_index] = fib_index;
512 ip4_sw_interface_enable_disable (sw_if_index, 1);
514 fib_index = fib_table_find_or_create_and_lock (FIB_PROTOCOL_IP6, table_id,
516 vec_validate (ip6_main.fib_index_by_sw_if_index, sw_if_index);
517 ip6_main.fib_index_by_sw_if_index[sw_if_index] = fib_index;
518 ip6_sw_interface_enable_disable (sw_if_index, 1);
522 lisp_gpe_tenant_del_default_routes (u32 table_id)
524 fib_protocol_t proto;
526 FOR_EACH_FIB_IP_PROTOCOL (proto)
528 fib_prefix_t prefix = {
533 fib_index = fib_table_find (prefix.fp_proto, table_id);
534 fib_table_entry_special_remove (fib_index, &prefix, FIB_SOURCE_LISP);
535 fib_table_unlock (fib_index, prefix.fp_proto, FIB_SOURCE_LISP);
540 lisp_gpe_tenant_add_default_routes (u32 table_id)
542 fib_protocol_t proto;
544 FOR_EACH_FIB_IP_PROTOCOL (proto)
546 fib_prefix_t prefix = {
552 * Add a deafult route that results in a control plane punt DPO
554 fib_index = fib_table_find_or_create_and_lock (prefix.fp_proto, table_id,
556 fib_table_entry_special_dpo_add (fib_index, &prefix, FIB_SOURCE_LISP,
557 FIB_ENTRY_FLAG_EXCLUSIVE,
558 lisp_cp_dpo_get (fib_proto_to_dpo
565 * @brief Add/del LISP-GPE L3 interface.
567 * Creates LISP-GPE interface, sets ingress arcs from lisp_gpeX_lookup,
568 * installs default routes that attract all traffic with no more specific
569 * routes to lgpe-ipx-lookup, set egress arcs to ipx-lookup, sets
570 * the interface in the right vrf and enables it.
572 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
573 * @param[in] a Parameters to create interface.
575 * @return number of vectors in frame.
578 lisp_gpe_add_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 table_id)
580 vnet_main_t *vnm = lgm->vnet_main;
581 tunnel_lookup_t *l3_ifaces = &lgm->l3_ifaces;
582 vnet_hw_interface_t *hi;
585 hip = hash_get (l3_ifaces->hw_if_index_by_dp_table, table_id);
589 clib_warning ("vrf %d already mapped to a vni", table_id);
593 si = hash_get (l3_ifaces->sw_if_index_by_vni, vni);
597 clib_warning ("Interface for vni %d already exists", vni);
600 /* create lisp iface and populate tunnel tables */
601 hi = lisp_gpe_create_iface (lgm, vni, table_id,
602 &lisp_gpe_device_class, l3_ifaces);
604 /* insert default routes that point to lisp-cp lookup */
605 lisp_gpe_iface_set_table (hi->sw_if_index, table_id);
606 lisp_gpe_tenant_add_default_routes (table_id);
608 /* enable interface */
609 vnet_sw_interface_set_flags (vnm, hi->sw_if_index,
610 VNET_SW_INTERFACE_FLAG_ADMIN_UP);
611 vnet_hw_interface_set_flags (vnm, hi->hw_if_index,
612 VNET_HW_INTERFACE_FLAG_LINK_UP);
614 return (hi->sw_if_index);
618 lisp_gpe_del_l3_iface (lisp_gpe_main_t * lgm, u32 vni, u32 table_id)
620 vnet_main_t *vnm = lgm->vnet_main;
621 tunnel_lookup_t *l3_ifaces = &lgm->l3_ifaces;
622 vnet_hw_interface_t *hi;
625 hip = hash_get (l3_ifaces->hw_if_index_by_dp_table, table_id);
629 clib_warning ("The interface for vrf %d doesn't exist", table_id);
633 hi = vnet_get_hw_interface (vnm, hip[0]);
635 lisp_gpe_remove_iface (lgm, hip[0], table_id, &lgm->l3_ifaces);
637 /* unset default routes */
638 ip4_sw_interface_enable_disable (hi->sw_if_index, 0);
639 ip6_sw_interface_enable_disable (hi->sw_if_index, 0);
640 lisp_gpe_tenant_del_default_routes (table_id);
644 * @brief Add/del LISP-GPE L2 interface.
646 * Creates LISP-GPE interface, sets it in L2 mode in the appropriate
647 * bridge domain, sets egress arcs and enables it.
649 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
650 * @param[in] a Parameters to create interface.
652 * @return number of vectors in frame.
655 lisp_gpe_add_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id)
657 vnet_main_t *vnm = lgm->vnet_main;
658 tunnel_lookup_t *l2_ifaces = &lgm->l2_ifaces;
659 vnet_hw_interface_t *hi;
663 if (bd_id > L2_BD_ID_MAX)
665 clib_warning ("bridge domain ID %d exceed 16M limit", bd_id);
669 bd_index = bd_find_or_add_bd_index (&bd_main, bd_id);
670 hip = hash_get (l2_ifaces->hw_if_index_by_dp_table, bd_index);
674 clib_warning ("bridge domain %d already mapped to a vni", bd_id);
678 si = hash_get (l2_ifaces->sw_if_index_by_vni, vni);
681 clib_warning ("Interface for vni %d already exists", vni);
685 /* create lisp iface and populate tunnel tables */
686 hi = lisp_gpe_create_iface (lgm, vni, bd_index,
687 &l2_lisp_gpe_device_class, &lgm->l2_ifaces);
689 /* enable interface */
690 vnet_sw_interface_set_flags (vnm, hi->sw_if_index,
691 VNET_SW_INTERFACE_FLAG_ADMIN_UP);
692 vnet_hw_interface_set_flags (vnm, hi->hw_if_index,
693 VNET_HW_INTERFACE_FLAG_LINK_UP);
695 l2_arc_to_lb = vlib_node_add_named_next (vlib_get_main (),
699 /* we're ready. add iface to l2 bridge domain */
700 set_int_l2_mode (lgm->vlib_main, vnm, MODE_L2_BRIDGE, hi->sw_if_index,
703 return (hi->sw_if_index);
707 * @brief Add/del LISP-GPE L2 interface.
709 * Creates LISP-GPE interface, sets it in L2 mode in the appropriate
710 * bridge domain, sets egress arcs and enables it.
712 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
713 * @param[in] a Parameters to create interface.
715 * @return number of vectors in frame.
718 lisp_gpe_del_l2_iface (lisp_gpe_main_t * lgm, u32 vni, u32 bd_id)
720 tunnel_lookup_t *l2_ifaces = &lgm->l2_ifaces;
721 vnet_hw_interface_t *hi;
723 u32 bd_index = bd_find_index (&bd_main, bd_id);
724 ASSERT (bd_index != ~0);
725 uword *hip = hash_get (l2_ifaces->hw_if_index_by_dp_table, bd_index);
729 clib_warning ("The interface for bridge domain %d doesn't exist",
734 /* Remove interface from bridge .. by enabling L3 mode */
735 hi = vnet_get_hw_interface (lgm->vnet_main, hip[0]);
736 set_int_l2_mode (lgm->vlib_main, lgm->vnet_main, MODE_L3, hi->sw_if_index,
738 lisp_gpe_remove_iface (lgm, hip[0], bd_index, &lgm->l2_ifaces);
742 * @brief Add LISP-GPE NSH interface.
744 * Creates LISP-GPE interface, sets it in L3 mode.
746 * @param[in] lgm Reference to @ref lisp_gpe_main_t.
747 * @param[in] a Parameters to create interface.
749 * @return sw_if_index.
752 vnet_lisp_gpe_add_nsh_iface (lisp_gpe_main_t * lgm)
754 vnet_main_t *vnm = lgm->vnet_main;
755 tunnel_lookup_t *nsh_ifaces = &lgm->nsh_ifaces;
756 vnet_hw_interface_t *hi;
759 hip = hash_get (nsh_ifaces->hw_if_index_by_dp_table, 0);
763 clib_warning ("NSH interface 0 already exists");
767 si = hash_get (nsh_ifaces->sw_if_index_by_vni, 0);
770 clib_warning ("NSH interface already exists");
774 /* create lisp iface and populate tunnel tables */
775 hi = lisp_gpe_create_iface (lgm, 0, 0,
776 &nsh_lisp_gpe_device_class, &lgm->nsh_ifaces);
778 /* enable interface */
779 vnet_sw_interface_set_flags (vnm, hi->sw_if_index,
780 VNET_SW_INTERFACE_FLAG_ADMIN_UP);
781 vnet_hw_interface_set_flags (vnm, hi->hw_if_index,
782 VNET_HW_INTERFACE_FLAG_LINK_UP);
784 return (hi->sw_if_index);
788 * @brief Del LISP-GPE NSH interface.
792 vnet_lisp_gpe_del_nsh_iface (lisp_gpe_main_t * lgm)
794 tunnel_lookup_t *nsh_ifaces = &lgm->nsh_ifaces;
797 hip = hash_get (nsh_ifaces->hw_if_index_by_dp_table, 0);
801 clib_warning ("The NSH 0 interface doesn't exist");
804 lisp_gpe_remove_iface (lgm, hip[0], 0, &lgm->nsh_ifaces);
807 static clib_error_t *
808 lisp_gpe_add_del_iface_command_fn (vlib_main_t * vm, unformat_input_t * input,
809 vlib_cli_command_t * cmd)
811 unformat_input_t _line_input, *line_input = &_line_input;
813 u32 table_id, vni, bd_id;
814 u8 vni_is_set = 0, vrf_is_set = 0, bd_index_is_set = 0;
816 clib_error_t *error = NULL;
818 if (vnet_lisp_gpe_enable_disable_status () == 0)
820 return clib_error_return (0, "LISP is disabled");
823 /* Get a line of input. */
824 if (!unformat_user (input, unformat_line_input, line_input))
827 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
829 if (unformat (line_input, "add"))
831 else if (unformat (line_input, "del"))
833 else if (unformat (line_input, "vrf %d", &table_id))
837 else if (unformat (line_input, "vni %d", &vni))
841 else if (unformat (line_input, "bd %d", &bd_id))
845 else if (unformat (line_input, "nsh"))
851 error = clib_error_return (0, "parse error: '%U'",
852 format_unformat_error, line_input);
861 if (~0 == vnet_lisp_gpe_add_nsh_iface (&lisp_gpe_main))
863 error = clib_error_return (0, "NSH interface not created");
869 vnet_lisp_gpe_del_nsh_iface (&lisp_gpe_main);
874 if (vrf_is_set && bd_index_is_set)
876 error = clib_error_return
877 (0, "Cannot set both vrf and brdige domain index!");
883 error = clib_error_return (0, "vni must be set!");
887 if (!vrf_is_set && !bd_index_is_set)
890 clib_error_return (0, "vrf or bridge domain index must be set!");
898 if (~0 == lisp_gpe_tenant_l2_iface_add_or_lock (vni, bd_id))
900 error = clib_error_return (0, "L2 interface not created");
905 lisp_gpe_tenant_l2_iface_unlock (vni);
911 if (~0 == lisp_gpe_tenant_l3_iface_add_or_lock (vni, table_id))
913 error = clib_error_return (0, "L3 interface not created");
918 lisp_gpe_tenant_l3_iface_unlock (vni);
922 unformat_free (line_input);
928 VLIB_CLI_COMMAND (add_del_lisp_gpe_iface_command, static) = {
930 .short_help = "gpe iface add/del vni <vni> vrf <vrf>",
931 .function = lisp_gpe_add_del_iface_command_fn,
936 * fd.io coding-style-patch-verification: ON
939 * eval: (c-set-style "gnu")