2 * Copyright (c) 2017 SUSE LLC.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
15 #include <vnet/geneve/geneve.h>
16 #include <vnet/ip/format.h>
17 #include <vnet/fib/fib_entry.h>
18 #include <vnet/fib/fib_table.h>
19 #include <vnet/mfib/mfib_table.h>
20 #include <vnet/adj/adj_mcast.h>
21 #include <vnet/interface.h>
22 #include <vlib/vlib.h>
28 * GENEVE provides the features needed to allow L2 bridge domains (BDs)
29 * to span multiple servers. This is done by building an L2 overlay on
30 * top of an L3 network underlay using GENEVE tunnels.
32 * This makes it possible for servers to be co-located in the same data
33 * center or be separated geographically as long as they are reachable
34 * through the underlay L3 network.
38 geneve_main_t geneve_main;
41 format_decap_next (u8 * s, va_list * args)
43 u32 next_index = va_arg (*args, u32);
47 case GENEVE_INPUT_NEXT_DROP:
48 return format (s, "drop");
49 case GENEVE_INPUT_NEXT_L2_INPUT:
50 return format (s, "l2");
52 return format (s, "index %d", next_index);
58 format_geneve_tunnel (u8 * s, va_list * args)
60 geneve_tunnel_t *t = va_arg (*args, geneve_tunnel_t *);
61 geneve_main_t *ngm = &geneve_main;
63 s = format (s, "[%d] local %U remote %U vni %d sw_if_index %d ",
65 format_ip46_address, &t->local, IP46_TYPE_ANY,
66 format_ip46_address, &t->remote, IP46_TYPE_ANY,
67 t->vni, t->sw_if_index);
69 if (ip46_address_is_multicast (&t->remote))
70 s = format (s, "mcast_sw_if_index %d ", t->mcast_sw_if_index);
72 s = format (s, "encap_fib_index %d fib_entry_index %d decap_next %U\n",
73 t->encap_fib_index, t->fib_entry_index,
74 format_decap_next, t->decap_next_index);
79 format_geneve_name (u8 * s, va_list * args)
81 u32 dev_instance = va_arg (*args, u32);
82 return format (s, "geneve_tunnel%d", dev_instance);
86 dummy_interface_tx (vlib_main_t * vm,
87 vlib_node_runtime_t * node, vlib_frame_t * frame)
89 clib_warning ("you shouldn't be here, leaking buffers...");
90 return frame->n_vectors;
94 geneve_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
96 u32 hw_flags = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) ?
97 VNET_HW_INTERFACE_FLAG_LINK_UP : 0;
98 vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
100 return /* no error */ 0;
104 VNET_DEVICE_CLASS (geneve_device_class, static) = {
106 .format_device_name = format_geneve_name,
107 .format_tx_trace = format_geneve_encap_trace,
108 .tx_function = dummy_interface_tx,
109 .admin_up_down_function = geneve_interface_admin_up_down,
114 format_geneve_header_with_length (u8 * s, va_list * args)
116 u32 dev_instance = va_arg (*args, u32);
117 s = format (s, "unimplemented dev %u", dev_instance);
122 VNET_HW_INTERFACE_CLASS (geneve_hw_class) = {
124 .format_header = format_geneve_header_with_length,
125 .build_rewrite = default_build_rewrite,
130 geneve_tunnel_restack_dpo (geneve_tunnel_t * t)
132 dpo_id_t dpo = DPO_INVALID;
133 u32 encap_index = ip46_address_is_ip4 (&t->remote) ?
134 geneve4_encap_node.index : geneve6_encap_node.index;
135 fib_forward_chain_type_t forw_type = ip46_address_is_ip4 (&t->remote) ?
136 FIB_FORW_CHAIN_TYPE_UNICAST_IP4 : FIB_FORW_CHAIN_TYPE_UNICAST_IP6;
138 fib_entry_contribute_forwarding (t->fib_entry_index, forw_type, &dpo);
139 dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
143 static geneve_tunnel_t *
144 geneve_tunnel_from_fib_node (fib_node_t * node)
147 ASSERT (FIB_NODE_TYPE_GENEVE_TUNNEL == node->fn_type);
149 return ((geneve_tunnel_t *) (((char *) node) -
150 STRUCT_OFFSET_OF (geneve_tunnel_t, node)));
154 * Function definition to backwalk a FIB node -
155 * Here we will restack the new dpo of GENEVE DIP to encap node.
157 static fib_node_back_walk_rc_t
158 geneve_tunnel_back_walk (fib_node_t * node, fib_node_back_walk_ctx_t * ctx)
160 geneve_tunnel_restack_dpo (geneve_tunnel_from_fib_node (node));
161 return (FIB_NODE_BACK_WALK_CONTINUE);
165 * Function definition to get a FIB node from its index
168 geneve_tunnel_fib_node_get (fib_node_index_t index)
171 geneve_main_t *vxm = &geneve_main;
173 t = pool_elt_at_index (vxm->tunnels, index);
179 * Function definition to inform the FIB node that its last lock has gone.
182 geneve_tunnel_last_lock_gone (fib_node_t * node)
185 * The GENEVE tunnel is a root of the graph. As such
186 * it never has children and thus is never locked.
192 * Virtual function table registered by GENEVE tunnels
193 * for participation in the FIB object graph.
195 const static fib_node_vft_t geneve_vft = {
196 .fnv_get = geneve_tunnel_fib_node_get,
197 .fnv_last_lock = geneve_tunnel_last_lock_gone,
198 .fnv_back_walk = geneve_tunnel_back_walk,
202 #define foreach_copy_field \
204 _(mcast_sw_if_index) \
206 _(decap_next_index) \
211 geneve_rewrite (geneve_tunnel_t * t, bool is_ip6)
215 ip4_geneve_header_t *h4;
216 ip6_geneve_header_t *h6;
221 int len = is_ip6 ? sizeof *r.h6 : sizeof *r.h4;
222 #if SUPPORT_OPTIONS_HEADER==1
223 len += t->options_len;
226 vec_validate_aligned (r.rw, len - 1, CLIB_CACHE_LINE_BYTES);
229 geneve_header_t *geneve;
230 /* Fixed portion of the (outer) ip header */
233 ip4_header_t *ip = &r.h4->ip4;
234 udp = &r.h4->udp, geneve = &r.h4->geneve;
235 ip->ip_version_and_header_length = 0x45;
237 ip->protocol = IP_PROTOCOL_UDP;
239 ip->src_address = t->local.ip4;
240 ip->dst_address = t->remote.ip4;
242 /* we fix up the ip4 header length and checksum after-the-fact */
243 ip->checksum = ip4_header_checksum (ip);
247 ip6_header_t *ip = &r.h6->ip6;
248 udp = &r.h6->udp, geneve = &r.h6->geneve;
249 ip->ip_version_traffic_class_and_flow_label =
250 clib_host_to_net_u32 (6 << 28);
252 ip->protocol = IP_PROTOCOL_UDP;
254 ip->src_address = t->local.ip6;
255 ip->dst_address = t->remote.ip6;
258 /* UDP header, randomize local port on something, maybe? */
259 udp->src_port = clib_host_to_net_u16 (5251);
260 udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_geneve);
263 vnet_set_geneve_version (geneve, GENEVE_VERSION);
264 #if SUPPORT_OPTIONS_HEADER==1
265 vnet_set_geneve_options_len (geneve, t->options_len);
267 vnet_set_geneve_options_len (geneve, 0);
269 vnet_set_geneve_oamframe_bit (geneve, 0);
270 vnet_set_geneve_critical_bit (geneve, 0);
271 vnet_set_geneve_protocol (geneve, GENEVE_ETH_PROTOCOL);
273 vnet_geneve_hdr_1word_hton (geneve);
275 vnet_set_geneve_vni (geneve, t->vni);
282 geneve_decap_next_is_valid (geneve_main_t * vxm, u32 is_ip6,
283 u32 decap_next_index)
285 vlib_main_t *vm = vxm->vlib_main;
287 (!is_ip6) ? geneve4_input_node.index : geneve6_input_node.index;
288 vlib_node_runtime_t *r = vlib_node_get_runtime (vm, input_idx);
290 return decap_next_index < r->n_next_nodes;
294 hash_set_key_copy (uword ** h, void *key, uword v)
296 size_t ksz = hash_header (*h)->user;
297 void *copy = clib_mem_alloc (ksz);
298 clib_memcpy (copy, key, ksz);
299 hash_set_mem (*h, copy, v);
303 hash_unset_key_free (uword ** h, void *key)
305 hash_pair_t *hp = hash_get_pair_mem (*h, key);
307 key = uword_to_pointer (hp->key, void *);
308 hash_unset_mem (*h, key);
313 vtep_addr_ref (ip46_address_t * ip)
315 uword *vtep = ip46_address_is_ip4 (ip) ?
316 hash_get (geneve_main.vtep4, ip->ip4.as_u32) :
317 hash_get_mem (geneve_main.vtep6, &ip->ip6);
320 ip46_address_is_ip4 (ip) ?
321 hash_set (geneve_main.vtep4, ip->ip4.as_u32, 1) :
322 hash_set_key_copy (&geneve_main.vtep6, &ip->ip6, 1);
327 vtep_addr_unref (ip46_address_t * ip)
329 uword *vtep = ip46_address_is_ip4 (ip) ?
330 hash_get (geneve_main.vtep4, ip->ip4.as_u32) :
331 hash_get_mem (geneve_main.vtep6, &ip->ip6);
335 ip46_address_is_ip4 (ip) ?
336 hash_unset (geneve_main.vtep4, ip->ip4.as_u32) :
337 hash_unset_key_free (&geneve_main.vtep6, &ip->ip6);
341 typedef CLIB_PACKED (union
345 fib_node_index_t mfib_entry_index;
346 adj_index_t mcast_adj_index;
350 static inline mcast_shared_t
351 mcast_shared_get (ip46_address_t * ip)
353 ASSERT (ip46_address_is_multicast (ip));
354 uword *p = hash_get_mem (geneve_main.mcast_shared, ip);
356 return (mcast_shared_t)
362 mcast_shared_add (ip46_address_t * remote,
363 fib_node_index_t mfei, adj_index_t ai)
365 mcast_shared_t new_ep = {
366 .mcast_adj_index = ai,
367 .mfib_entry_index = mfei,
370 hash_set_key_copy (&geneve_main.mcast_shared, remote, new_ep.as_u64);
374 mcast_shared_remove (ip46_address_t * remote)
376 mcast_shared_t ep = mcast_shared_get (remote);
378 adj_unlock (ep.mcast_adj_index);
379 mfib_table_entry_delete_index (ep.mfib_entry_index, MFIB_SOURCE_GENEVE);
381 hash_unset_key_free (&geneve_main.mcast_shared, remote);
384 static inline fib_protocol_t
385 fib_ip_proto (bool is_ip6)
387 return (is_ip6) ? FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4;
390 int vnet_geneve_add_del_tunnel
391 (vnet_geneve_add_del_tunnel_args_t * a, u32 * sw_if_indexp)
393 geneve_main_t *vxm = &geneve_main;
394 geneve_tunnel_t *t = 0;
395 vnet_main_t *vnm = vxm->vnet_main;
397 u32 hw_if_index = ~0;
398 u32 sw_if_index = ~0;
400 geneve4_tunnel_key_t key4;
401 geneve6_tunnel_key_t key6;
402 u32 is_ip6 = a->is_ip6;
406 key4.remote = a->remote.ip4.as_u32;
408 clib_host_to_net_u32 ((a->vni << GENEVE_VNI_SHIFT) & GENEVE_VNI_MASK);
409 p = hash_get (vxm->geneve4_tunnel_by_key, key4.as_u64);
413 key6.remote = a->remote.ip6;
415 clib_host_to_net_u32 ((a->vni << GENEVE_VNI_SHIFT) & GENEVE_VNI_MASK);
416 p = hash_get_mem (vxm->geneve6_tunnel_by_key, &key6);
421 l2input_main_t *l2im = &l2input_main;
423 /* adding a tunnel: tunnel must not already exist */
425 return VNET_API_ERROR_TUNNEL_EXIST;
427 /*if not set explicitly, default to l2 */
428 if (a->decap_next_index == ~0)
429 a->decap_next_index = GENEVE_INPUT_NEXT_L2_INPUT;
430 if (!geneve_decap_next_is_valid (vxm, is_ip6, a->decap_next_index))
431 return VNET_API_ERROR_INVALID_DECAP_NEXT;
433 pool_get_aligned (vxm->tunnels, t, CLIB_CACHE_LINE_BYTES);
434 memset (t, 0, sizeof (*t));
436 /* copy from arg structure */
437 #define _(x) t->x = a->x;
441 rv = geneve_rewrite (t, is_ip6);
444 pool_put (vxm->tunnels, t);
450 hash_set_key_copy (&vxm->geneve6_tunnel_by_key, &key6,
453 hash_set (vxm->geneve4_tunnel_by_key, key4.as_u64, t - vxm->tunnels);
455 vnet_hw_interface_t *hi;
456 if (vec_len (vxm->free_geneve_tunnel_hw_if_indices) > 0)
458 vnet_interface_main_t *im = &vnm->interface_main;
459 hw_if_index = vxm->free_geneve_tunnel_hw_if_indices
460 [vec_len (vxm->free_geneve_tunnel_hw_if_indices) - 1];
461 _vec_len (vxm->free_geneve_tunnel_hw_if_indices) -= 1;
463 hi = vnet_get_hw_interface (vnm, hw_if_index);
464 hi->dev_instance = t - vxm->tunnels;
465 hi->hw_instance = hi->dev_instance;
467 /* clear old stats of freed tunnel before reuse */
468 sw_if_index = hi->sw_if_index;
469 vnet_interface_counter_lock (im);
470 vlib_zero_combined_counter
471 (&im->combined_sw_if_counters[VNET_INTERFACE_COUNTER_TX],
473 vlib_zero_combined_counter (&im->combined_sw_if_counters
474 [VNET_INTERFACE_COUNTER_RX],
476 vlib_zero_simple_counter (&im->sw_if_counters
477 [VNET_INTERFACE_COUNTER_DROP],
479 vnet_interface_counter_unlock (im);
483 hw_if_index = vnet_register_interface
484 (vnm, geneve_device_class.index, t - vxm->tunnels,
485 geneve_hw_class.index, t - vxm->tunnels);
486 hi = vnet_get_hw_interface (vnm, hw_if_index);
489 t->hw_if_index = hw_if_index;
490 t->sw_if_index = sw_if_index = hi->sw_if_index;
492 vec_validate_init_empty (vxm->tunnel_index_by_sw_if_index, sw_if_index,
494 vxm->tunnel_index_by_sw_if_index[sw_if_index] = t - vxm->tunnels;
496 /* setup l2 input config with l2 feature and bd 0 to drop packet */
497 vec_validate (l2im->configs, sw_if_index);
498 l2im->configs[sw_if_index].feature_bitmap = L2INPUT_FEAT_DROP;
499 l2im->configs[sw_if_index].bd_index = 0;
501 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
502 si->flags &= ~VNET_SW_INTERFACE_FLAG_HIDDEN;
503 vnet_sw_interface_set_flags (vnm, sw_if_index,
504 VNET_SW_INTERFACE_FLAG_ADMIN_UP);
506 fib_node_init (&t->node, FIB_NODE_TYPE_GENEVE_TUNNEL);
507 fib_prefix_t tun_remote_pfx;
508 u32 encap_index = !is_ip6 ?
509 geneve4_encap_node.index : geneve6_encap_node.index;
510 vnet_flood_class_t flood_class = VNET_FLOOD_CLASS_TUNNEL_NORMAL;
512 fib_prefix_from_ip46_addr (&t->remote, &tun_remote_pfx);
513 if (!ip46_address_is_multicast (&t->remote))
516 * source the FIB entry for the tunnel's destination
517 * and become a child thereof. The tunnel will then get poked
518 * when the forwarding for the entry updates, and the tunnel can
519 * re-stack accordingly
521 vtep_addr_ref (&t->local);
522 t->fib_entry_index = fib_table_entry_special_add
523 (t->encap_fib_index, &tun_remote_pfx, FIB_SOURCE_RR,
524 FIB_ENTRY_FLAG_NONE);
525 t->sibling_index = fib_entry_child_add
526 (t->fib_entry_index, FIB_NODE_TYPE_GENEVE_TUNNEL,
528 geneve_tunnel_restack_dpo (t);
532 /* Multicast tunnel -
533 * as the same mcast group can be used for mutiple mcast tunnels
534 * with different VNIs, create the output fib adjecency only if
535 * it does not already exist
537 fib_protocol_t fp = fib_ip_proto (is_ip6);
539 if (vtep_addr_ref (&t->remote) == 1)
541 fib_node_index_t mfei;
543 fib_route_path_t path = {
544 .frp_proto = fib_proto_to_dpo (fp),
545 .frp_addr = zero_addr,
546 .frp_sw_if_index = 0xffffffff,
549 .frp_flags = FIB_ROUTE_PATH_LOCAL,
551 const mfib_prefix_t mpfx = {
553 .fp_len = (is_ip6 ? 128 : 32),
554 .fp_grp_addr = tun_remote_pfx.fp_addr,
558 * Setup the (*,G) to receive traffic on the mcast group
559 * - the forwarding interface is for-us
560 * - the accepting interface is that from the API
562 mfib_table_entry_path_update (t->encap_fib_index,
565 &path, MFIB_ITF_FLAG_FORWARD);
567 path.frp_sw_if_index = a->mcast_sw_if_index;
568 path.frp_flags = FIB_ROUTE_PATH_FLAG_NONE;
569 mfei = mfib_table_entry_path_update (t->encap_fib_index,
573 MFIB_ITF_FLAG_ACCEPT);
576 * Create the mcast adjacency to send traffic to the group
578 ai = adj_mcast_add_or_lock (fp,
579 fib_proto_to_link (fp),
580 a->mcast_sw_if_index);
583 * create a new end-point
585 mcast_shared_add (&t->remote, mfei, ai);
588 dpo_id_t dpo = DPO_INVALID;
589 mcast_shared_t ep = mcast_shared_get (&t->remote);
591 /* Stack shared mcast remote mac addr rewrite on encap */
592 dpo_set (&dpo, DPO_ADJACENCY_MCAST,
593 fib_proto_to_dpo (fp), ep.mcast_adj_index);
595 dpo_stack_from_node (encap_index, &t->next_dpo, &dpo);
597 flood_class = VNET_FLOOD_CLASS_TUNNEL_MASTER;
600 /* Set geneve tunnel output node */
601 hi->output_node_index = encap_index;
603 vnet_get_sw_interface (vnet_get_main (), sw_if_index)->flood_class =
608 /* deleting a tunnel: tunnel must exist */
610 return VNET_API_ERROR_NO_SUCH_ENTRY;
612 t = pool_elt_at_index (vxm->tunnels, p[0]);
614 sw_if_index = t->sw_if_index;
615 vnet_sw_interface_set_flags (vnm, t->sw_if_index, 0 /* down */ );
616 vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, t->sw_if_index);
617 si->flags |= VNET_SW_INTERFACE_FLAG_HIDDEN;
619 /* make sure tunnel is removed from l2 bd or xconnect */
620 set_int_l2_mode (vxm->vlib_main, vnm, MODE_L3, t->sw_if_index, 0, 0, 0,
622 vec_add1 (vxm->free_geneve_tunnel_hw_if_indices, t->hw_if_index);
624 vxm->tunnel_index_by_sw_if_index[t->sw_if_index] = ~0;
627 hash_unset (vxm->geneve4_tunnel_by_key, key4.as_u64);
629 hash_unset_key_free (&vxm->geneve6_tunnel_by_key, &key6);
631 if (!ip46_address_is_multicast (&t->remote))
633 vtep_addr_unref (&t->local);
634 fib_entry_child_remove (t->fib_entry_index, t->sibling_index);
635 fib_table_entry_delete_index (t->fib_entry_index, FIB_SOURCE_RR);
637 else if (vtep_addr_unref (&t->remote) == 0)
639 mcast_shared_remove (&t->remote);
642 fib_node_deinit (&t->node);
643 vec_free (t->rewrite);
644 pool_put (vxm->tunnels, t);
648 *sw_if_indexp = sw_if_index;
654 get_decap_next_for_node (u32 node_index, u32 ipv4_set)
656 geneve_main_t *vxm = &geneve_main;
657 vlib_main_t *vm = vxm->vlib_main;
658 uword input_node = (ipv4_set) ? geneve4_input_node.index :
659 geneve6_input_node.index;
661 return vlib_node_add_next (vm, input_node, node_index);
665 unformat_decap_next (unformat_input_t * input, va_list * args)
667 u32 *result = va_arg (*args, u32 *);
668 u32 ipv4_set = va_arg (*args, int);
669 geneve_main_t *vxm = &geneve_main;
670 vlib_main_t *vm = vxm->vlib_main;
674 if (unformat (input, "l2"))
675 *result = GENEVE_INPUT_NEXT_L2_INPUT;
676 else if (unformat (input, "node %U", unformat_vlib_node, vm, &node_index))
677 *result = get_decap_next_for_node (node_index, ipv4_set);
678 else if (unformat (input, "%d", &tmp))
685 static clib_error_t *
686 geneve_add_del_tunnel_command_fn (vlib_main_t * vm,
687 unformat_input_t * input,
688 vlib_cli_command_t * cmd)
690 unformat_input_t _line_input, *line_input = &_line_input;
691 ip46_address_t local, remote;
698 u32 encap_fib_index = 0;
699 u32 mcast_sw_if_index = ~0;
700 u32 decap_next_index = GENEVE_INPUT_NEXT_L2_INPUT;
704 vnet_geneve_add_del_tunnel_args_t _a, *a = &_a;
705 u32 tunnel_sw_if_index;
706 clib_error_t *error = NULL;
708 /* Cant "universally zero init" (={0}) due to GCC bug 53119 */
709 memset (&local, 0, sizeof local);
710 memset (&remote, 0, sizeof remote);
712 /* Get a line of input. */
713 if (!unformat_user (input, unformat_line_input, line_input))
716 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
718 if (unformat (line_input, "del"))
722 else if (unformat (line_input, "local %U",
723 unformat_ip4_address, &local.ip4))
728 else if (unformat (line_input, "remote %U",
729 unformat_ip4_address, &remote.ip4))
734 else if (unformat (line_input, "local %U",
735 unformat_ip6_address, &local.ip6))
740 else if (unformat (line_input, "remote %U",
741 unformat_ip6_address, &remote.ip6))
746 else if (unformat (line_input, "group %U %U",
747 unformat_ip4_address, &remote.ip4,
748 unformat_vnet_sw_interface,
749 vnet_get_main (), &mcast_sw_if_index))
751 grp_set = remote_set = 1;
754 else if (unformat (line_input, "group %U %U",
755 unformat_ip6_address, &remote.ip6,
756 unformat_vnet_sw_interface,
757 vnet_get_main (), &mcast_sw_if_index))
759 grp_set = remote_set = 1;
762 else if (unformat (line_input, "encap-vrf-id %d", &tmp))
764 encap_fib_index = fib_table_find (fib_ip_proto (ipv6_set), tmp);
765 if (encap_fib_index == ~0)
768 clib_error_return (0, "nonexistent encap-vrf-id %d", tmp);
772 else if (unformat (line_input, "decap-next %U", unformat_decap_next,
773 &decap_next_index, ipv4_set))
775 else if (unformat (line_input, "vni %d", &vni))
779 error = clib_error_return (0, "vni %d out of range", vni);
785 error = clib_error_return (0, "parse error: '%U'",
786 format_unformat_error, line_input);
793 error = clib_error_return (0, "tunnel local address not specified");
799 error = clib_error_return (0, "tunnel remote address not specified");
803 if (grp_set && !ip46_address_is_multicast (&remote))
805 error = clib_error_return (0, "tunnel group address not multicast");
809 if (grp_set == 0 && ip46_address_is_multicast (&remote))
811 error = clib_error_return (0, "remote address must be unicast");
815 if (grp_set && mcast_sw_if_index == ~0)
817 error = clib_error_return (0, "tunnel nonexistent multicast device");
821 if (ipv4_set && ipv6_set)
823 error = clib_error_return (0, "both IPv4 and IPv6 addresses specified");
827 if (ip46_address_cmp (&local, &remote) == 0)
830 clib_error_return (0, "local and remote addresses are identical");
834 if (decap_next_index == ~0)
836 error = clib_error_return (0, "next node not found");
842 error = clib_error_return (0, "vni not specified");
846 memset (a, 0, sizeof (*a));
849 a->is_ip6 = ipv6_set;
851 #define _(x) a->x = x;
855 rv = vnet_geneve_add_del_tunnel (a, &tunnel_sw_if_index);
861 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
862 vnet_get_main (), tunnel_sw_if_index);
865 case VNET_API_ERROR_TUNNEL_EXIST:
866 error = clib_error_return (0, "tunnel already exists...");
869 case VNET_API_ERROR_NO_SUCH_ENTRY:
870 error = clib_error_return (0, "tunnel does not exist...");
874 error = clib_error_return
875 (0, "vnet_geneve_add_del_tunnel returned %d", rv);
880 unformat_free (line_input);
886 * Add or delete a GENEVE Tunnel.
888 * GENEVE provides the features needed to allow L2 bridge domains (BDs)
889 * to span multiple servers. This is done by building an L2 overlay on
890 * top of an L3 network underlay using GENEVE tunnels.
892 * This makes it possible for servers to be co-located in the same data
893 * center or be separated geographically as long as they are reachable
894 * through the underlay L3 network.
896 * You can refer to this kind of L2 overlay bridge domain as a GENEVE
900 * Example of how to create a GENEVE Tunnel:
901 * @cliexcmd{create geneve tunnel local 10.0.3.1 remote 10.0.3.3 vni 13 encap-vrf-id 7}
902 * Example of how to delete a GENEVE Tunnel:
903 * @cliexcmd{create geneve tunnel local 10.0.3.1 remote 10.0.3.3 vni 13 del}
906 VLIB_CLI_COMMAND (create_geneve_tunnel_command, static) = {
907 .path = "create geneve tunnel",
909 "create geneve tunnel local <local-vtep-addr>"
910 " {remote <remote-vtep-addr>|group <mcast-vtep-addr> <intf-name>} vni <nn>"
911 " [encap-vrf-id <nn>] [decap-next [l2|node <name>]] [del]",
912 .function = geneve_add_del_tunnel_command_fn,
916 static clib_error_t *
917 show_geneve_tunnel_command_fn (vlib_main_t * vm,
918 unformat_input_t * input,
919 vlib_cli_command_t * cmd)
921 geneve_main_t *vxm = &geneve_main;
924 if (pool_elts (vxm->tunnels) == 0)
925 vlib_cli_output (vm, "No geneve tunnels configured...");
927 pool_foreach (t, vxm->tunnels, (
929 vlib_cli_output (vm, "%U",
930 format_geneve_tunnel, t);
938 * Display all the GENEVE Tunnel entries.
941 * Example of how to display the GENEVE Tunnel entries:
942 * @cliexstart{show geneve tunnel}
943 * [0] local 10.0.3.1 remote 10.0.3.3 vni 13 encap_fib_index 0 sw_if_index 5 decap_next l2
947 VLIB_CLI_COMMAND (show_geneve_tunnel_command, static) = {
948 .path = "show geneve tunnel",
949 .short_help = "show geneve tunnel",
950 .function = show_geneve_tunnel_command_fn,
956 vnet_int_geneve_bypass_mode (u32 sw_if_index, u8 is_ip6, u8 is_enable)
959 vnet_feature_enable_disable ("ip6-unicast", "ip6-geneve-bypass",
960 sw_if_index, is_enable, 0, 0);
962 vnet_feature_enable_disable ("ip4-unicast", "ip4-geneve-bypass",
963 sw_if_index, is_enable, 0, 0);
967 static clib_error_t *
968 set_ip_geneve_bypass (u32 is_ip6,
969 unformat_input_t * input, vlib_cli_command_t * cmd)
971 unformat_input_t _line_input, *line_input = &_line_input;
972 vnet_main_t *vnm = vnet_get_main ();
973 clib_error_t *error = 0;
974 u32 sw_if_index, is_enable;
979 if (!unformat_user (input, unformat_line_input, line_input))
982 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
985 (line_input, unformat_vnet_sw_interface, vnm, &sw_if_index))
987 else if (unformat (line_input, "del"))
991 error = unformat_parse_error (line_input);
996 if (~0 == sw_if_index)
998 error = clib_error_return (0, "unknown interface `%U'",
999 format_unformat_error, line_input);
1003 vnet_int_geneve_bypass_mode (sw_if_index, is_ip6, is_enable);
1006 unformat_free (line_input);
1011 static clib_error_t *
1012 set_ip4_geneve_bypass (vlib_main_t * vm,
1013 unformat_input_t * input, vlib_cli_command_t * cmd)
1015 return set_ip_geneve_bypass (0, input, cmd);
1019 * This command adds the 'ip4-geneve-bypass' graph node for a given interface.
1020 * By adding the IPv4 geneve-bypass graph node to an interface, the node checks
1021 * for and validate input geneve packet and bypass ip4-lookup, ip4-local,
1022 * ip4-udp-lookup nodes to speedup geneve packet forwarding. This node will
1023 * cause extra overhead to for non-geneve packets which is kept at a minimum.
1027 * Example of graph node before ip4-geneve-bypass is enabled:
1028 * @cliexstart{show vlib graph ip4-geneve-bypass}
1029 * Name Next Previous
1030 * ip4-geneve-bypass error-drop [0]
1035 * Example of how to enable ip4-geneve-bypass on an interface:
1036 * @cliexcmd{set interface ip geneve-bypass GigabitEthernet2/0/0}
1038 * Example of graph node after ip4-geneve-bypass is enabled:
1039 * @cliexstart{show vlib graph ip4-geneve-bypass}
1040 * Name Next Previous
1041 * ip4-geneve-bypass error-drop [0] ip4-input
1042 * geneve4-input [1] ip4-input-no-checksum
1046 * Example of how to display the feature enabed on an interface:
1047 * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1048 * IP feature paths configured on GigabitEthernet2/0/0...
1056 * Example of how to disable ip4-geneve-bypass on an interface:
1057 * @cliexcmd{set interface ip geneve-bypass GigabitEthernet2/0/0 del}
1061 VLIB_CLI_COMMAND (set_interface_ip_geneve_bypass_command, static) = {
1062 .path = "set interface ip geneve-bypass",
1063 .function = set_ip4_geneve_bypass,
1064 .short_help = "set interface ip geneve-bypass <interface> [del]",
1068 static clib_error_t *
1069 set_ip6_geneve_bypass (vlib_main_t * vm,
1070 unformat_input_t * input, vlib_cli_command_t * cmd)
1072 return set_ip_geneve_bypass (1, input, cmd);
1076 * This command adds the 'ip6-geneve-bypass' graph node for a given interface.
1077 * By adding the IPv6 geneve-bypass graph node to an interface, the node checks
1078 * for and validate input geneve packet and bypass ip6-lookup, ip6-local,
1079 * ip6-udp-lookup nodes to speedup geneve packet forwarding. This node will
1080 * cause extra overhead to for non-geneve packets which is kept at a minimum.
1084 * Example of graph node before ip6-geneve-bypass is enabled:
1085 * @cliexstart{show vlib graph ip6-geneve-bypass}
1086 * Name Next Previous
1087 * ip6-geneve-bypass error-drop [0]
1092 * Example of how to enable ip6-geneve-bypass on an interface:
1093 * @cliexcmd{set interface ip6 geneve-bypass GigabitEthernet2/0/0}
1095 * Example of graph node after ip6-geneve-bypass is enabled:
1096 * @cliexstart{show vlib graph ip6-geneve-bypass}
1097 * Name Next Previous
1098 * ip6-geneve-bypass error-drop [0] ip6-input
1099 * geneve6-input [1] ip4-input-no-checksum
1103 * Example of how to display the feature enabed on an interface:
1104 * @cliexstart{show ip interface features GigabitEthernet2/0/0}
1105 * IP feature paths configured on GigabitEthernet2/0/0...
1113 * Example of how to disable ip6-geneve-bypass on an interface:
1114 * @cliexcmd{set interface ip6 geneve-bypass GigabitEthernet2/0/0 del}
1118 VLIB_CLI_COMMAND (set_interface_ip6_geneve_bypass_command, static) = {
1119 .path = "set interface ip6 geneve-bypass",
1120 .function = set_ip6_geneve_bypass,
1121 .short_help = "set interface ip geneve-bypass <interface> [del]",
1126 geneve_init (vlib_main_t * vm)
1128 geneve_main_t *vxm = &geneve_main;
1130 vxm->vnet_main = vnet_get_main ();
1131 vxm->vlib_main = vm;
1133 /* initialize the ip6 hash */
1134 vxm->geneve6_tunnel_by_key = hash_create_mem (0,
1135 sizeof (geneve6_tunnel_key_t),
1137 vxm->vtep6 = hash_create_mem (0, sizeof (ip6_address_t), sizeof (uword));
1138 vxm->mcast_shared = hash_create_mem (0,
1139 sizeof (ip46_address_t),
1140 sizeof (mcast_shared_t));
1142 udp_register_dst_port (vm, UDP_DST_PORT_geneve,
1143 geneve4_input_node.index, /* is_ip4 */ 1);
1144 udp_register_dst_port (vm, UDP_DST_PORT_geneve6,
1145 geneve6_input_node.index, /* is_ip4 */ 0);
1147 fib_node_register_type (FIB_NODE_TYPE_GENEVE_TUNNEL, &geneve_vft);
1152 VLIB_INIT_FUNCTION (geneve_init);
1155 * fd.io coding-style-patch-verification: ON
1158 * eval: (c-set-style "gnu")