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Ed Warnickecb9cada2015-12-08 15:45:58 -07001/*
2 * gre_interface.c: gre interfaces
3 *
4 * Copyright (c) 2012 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#include <vnet/vnet.h>
Ed Warnickecb9cada2015-12-08 15:45:58 -070019#include <vnet/gre/gre.h>
Chris Luke27fe48f2016-04-28 13:44:38 -040020#include <vnet/ip/format.h>
Neale Ranns5a59b2b2020-10-19 14:47:20 +000021#include <vnet/fib/fib_table.h>
Neale Ranns0bfe5d82016-08-25 15:29:12 +010022#include <vnet/adj/adj_midchain.h>
Neale Rannsb80c5362016-10-08 13:03:40 +010023#include <vnet/adj/adj_nbr.h>
Neale Ranns0bfe5d82016-08-25 15:29:12 +010024#include <vnet/mpls/mpls.h>
Neale Ranns3b81a1e2018-09-06 09:50:26 -070025#include <vnet/l2/l2_input.h>
Neale Ranns03ce4622020-02-03 10:55:09 +000026#include <vnet/teib/teib.h>
Ed Warnickecb9cada2015-12-08 15:45:58 -070027
Neale Ranns5f8f6172019-04-18 10:23:56 +000028u8 *
29format_gre_tunnel_type (u8 * s, va_list * args)
30{
31 gre_tunnel_type_t type = va_arg (*args, int);
32
33 switch (type)
34 {
35#define _(n, v) case GRE_TUNNEL_TYPE_##n: \
36 s = format (s, "%s", v); \
37 break;
38 foreach_gre_tunnel_type
39#undef _
40 }
41
42 return (s);
43}
44
Neale Ranns0bfe5d82016-08-25 15:29:12 +010045static u8 *
46format_gre_tunnel (u8 * s, va_list * args)
Chris Luke27fe48f2016-04-28 13:44:38 -040047{
Swarup Nayak9ff647a2017-11-27 10:27:43 +053048 gre_tunnel_t *t = va_arg (*args, gre_tunnel_t *);
Chris Luke27fe48f2016-04-28 13:44:38 -040049
John Loa43ccae2018-02-13 17:15:23 -050050 s = format (s, "[%d] instance %d src %U dst %U fib-idx %d sw-if-idx %d ",
51 t->dev_instance, t->user_instance,
John Lo4478d8e2018-01-12 17:15:25 -050052 format_ip46_address, &t->tunnel_src, IP46_TYPE_ANY,
53 format_ip46_address, &t->tunnel_dst.fp_addr, IP46_TYPE_ANY,
54 t->outer_fib_index, t->sw_if_index);
55
Neale Ranns5f8f6172019-04-18 10:23:56 +000056 s = format (s, "payload %U ", format_gre_tunnel_type, t->type);
Neale Ranns59ff9182019-12-29 23:55:18 +000057 s = format (s, "%U ", format_tunnel_mode, t->mode);
John Loa43ccae2018-02-13 17:15:23 -050058
59 if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
60 s = format (s, "session %d ", t->session_id);
61
62 if (t->type != GRE_TUNNEL_TYPE_L3)
63 s = format (s, "l2-adj-idx %d ", t->l2_adj_index);
Neale Ranns0bfe5d82016-08-25 15:29:12 +010064
Chris Luke27fe48f2016-04-28 13:44:38 -040065 return s;
66}
67
Neale Ranns0bfe5d82016-08-25 15:29:12 +010068static gre_tunnel_t *
Neale Ranns5a8844b2019-04-16 07:15:35 +000069gre_tunnel_db_find (const vnet_gre_tunnel_add_del_args_t * a,
John Loa43ccae2018-02-13 17:15:23 -050070 u32 outer_fib_index, gre_tunnel_key_t * key)
Neale Ranns0bfe5d82016-08-25 15:29:12 +010071{
Swarup Nayak9ff647a2017-11-27 10:27:43 +053072 gre_main_t *gm = &gre_main;
73 uword *p;
Neale Ranns0bfe5d82016-08-25 15:29:12 +010074
John Loa43ccae2018-02-13 17:15:23 -050075 if (!a->is_ipv6)
Ciara Loftus7eac9162016-09-30 15:47:03 +010076 {
John Loa43ccae2018-02-13 17:15:23 -050077 gre_mk_key4 (a->src.ip4, a->dst.ip4, outer_fib_index,
Neale Ranns4c16d802019-12-17 20:15:03 +000078 a->type, a->mode, a->session_id, &key->gtk_v4);
Neale Ranns33ce60d2017-12-14 08:51:32 -080079 p = hash_get_mem (gm->tunnel_by_key4, &key->gtk_v4);
Ciara Loftus7eac9162016-09-30 15:47:03 +010080 }
81 else
82 {
John Loa43ccae2018-02-13 17:15:23 -050083 gre_mk_key6 (&a->src.ip6, &a->dst.ip6, outer_fib_index,
Neale Ranns4c16d802019-12-17 20:15:03 +000084 a->type, a->mode, a->session_id, &key->gtk_v6);
Neale Ranns33ce60d2017-12-14 08:51:32 -080085 p = hash_get_mem (gm->tunnel_by_key6, &key->gtk_v6);
Ciara Loftus7eac9162016-09-30 15:47:03 +010086 }
Neale Ranns0bfe5d82016-08-25 15:29:12 +010087
88 if (NULL == p)
89 return (NULL);
90
91 return (pool_elt_at_index (gm->tunnels, p[0]));
92}
93
94static void
Neale Ranns33ce60d2017-12-14 08:51:32 -080095gre_tunnel_db_add (gre_tunnel_t * t, gre_tunnel_key_t * key)
Neale Ranns0bfe5d82016-08-25 15:29:12 +010096{
Swarup Nayak9ff647a2017-11-27 10:27:43 +053097 gre_main_t *gm = &gre_main;
Neale Ranns0bfe5d82016-08-25 15:29:12 +010098
Neale Ranns33ce60d2017-12-14 08:51:32 -080099 if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6)
Ciara Loftus7eac9162016-09-30 15:47:03 +0100100 {
Neale Ranns4c16d802019-12-17 20:15:03 +0000101 hash_set_mem_alloc (&gm->tunnel_by_key6, &key->gtk_v6, t->dev_instance);
Ciara Loftus7eac9162016-09-30 15:47:03 +0100102 }
103 else
104 {
Neale Ranns4c16d802019-12-17 20:15:03 +0000105 hash_set_mem_alloc (&gm->tunnel_by_key4, &key->gtk_v4, t->dev_instance);
Ciara Loftus7eac9162016-09-30 15:47:03 +0100106 }
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100107}
108
109static void
Neale Ranns4c16d802019-12-17 20:15:03 +0000110gre_tunnel_db_remove (gre_tunnel_t * t, gre_tunnel_key_t * key)
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100111{
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530112 gre_main_t *gm = &gre_main;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100113
Neale Ranns33ce60d2017-12-14 08:51:32 -0800114 if (t->tunnel_dst.fp_proto == FIB_PROTOCOL_IP6)
Ciara Loftus7eac9162016-09-30 15:47:03 +0100115 {
Neale Ranns4c16d802019-12-17 20:15:03 +0000116 hash_unset_mem_free (&gm->tunnel_by_key6, &key->gtk_v6);
Ciara Loftus7eac9162016-09-30 15:47:03 +0100117 }
118 else
119 {
Neale Ranns4c16d802019-12-17 20:15:03 +0000120 hash_unset_mem_free (&gm->tunnel_by_key4, &key->gtk_v4);
Ciara Loftus7eac9162016-09-30 15:47:03 +0100121 }
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100122}
123
Neale Ranns5e575b12016-10-03 09:40:25 +0100124/**
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100125 * gre_tunnel_stack
126 *
127 * 'stack' (resolve the recursion for) the tunnel's midchain adjacency
128 */
Neale Ranns5e575b12016-10-03 09:40:25 +0100129void
Neale Rannsb80c5362016-10-08 13:03:40 +0100130gre_tunnel_stack (adj_index_t ai)
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100131{
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530132 gre_main_t *gm = &gre_main;
133 ip_adjacency_t *adj;
134 gre_tunnel_t *gt;
135 u32 sw_if_index;
Neale Rannsb80c5362016-10-08 13:03:40 +0100136
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530137 adj = adj_get (ai);
138 sw_if_index = adj->rewrite_header.sw_if_index;
Neale Rannsb80c5362016-10-08 13:03:40 +0100139
Eyal Baricd307742018-07-22 12:45:15 +0300140 if ((vec_len (gm->tunnel_index_by_sw_if_index) <= sw_if_index) ||
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530141 (~0 == gm->tunnel_index_by_sw_if_index[sw_if_index]))
142 return;
Neale Rannsb80c5362016-10-08 13:03:40 +0100143
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530144 gt = pool_elt_at_index (gm->tunnels,
145 gm->tunnel_index_by_sw_if_index[sw_if_index]);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100146
John Loa43ccae2018-02-13 17:15:23 -0500147 if ((vnet_hw_interface_get_flags (vnet_get_main (), gt->hw_if_index) &
148 VNET_HW_INTERFACE_FLAG_LINK_UP) == 0)
Neale Rannsb80c5362016-10-08 13:03:40 +0100149 {
Neale Ranns4c3ba812019-03-26 07:02:58 +0000150 adj_midchain_delegate_unstack (ai);
Neale Rannsb80c5362016-10-08 13:03:40 +0100151 }
Neale Ranns521a8d72018-12-06 13:46:49 +0000152 else
John Loa43ccae2018-02-13 17:15:23 -0500153 {
Neale Ranns4c3ba812019-03-26 07:02:58 +0000154 adj_midchain_delegate_stack (ai, gt->outer_fib_index, &gt->tunnel_dst);
John Loa43ccae2018-02-13 17:15:23 -0500155 }
Neale Rannsb80c5362016-10-08 13:03:40 +0100156}
157
158/**
159 * @brief Call back when restacking all adjacencies on a GRE interface
160 */
161static adj_walk_rc_t
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530162gre_adj_walk_cb (adj_index_t ai, void *ctx)
Neale Rannsb80c5362016-10-08 13:03:40 +0100163{
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530164 gre_tunnel_stack (ai);
Neale Rannsb80c5362016-10-08 13:03:40 +0100165
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530166 return (ADJ_WALK_RC_CONTINUE);
Neale Rannsb80c5362016-10-08 13:03:40 +0100167}
168
169static void
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530170gre_tunnel_restack (gre_tunnel_t * gt)
Neale Rannsb80c5362016-10-08 13:03:40 +0100171{
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530172 fib_protocol_t proto;
Neale Rannsb80c5362016-10-08 13:03:40 +0100173
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530174 /*
175 * walk all the adjacencies on th GRE interface and restack them
176 */
177 FOR_EACH_FIB_IP_PROTOCOL (proto)
178 {
179 adj_nbr_walk (gt->sw_if_index, proto, gre_adj_walk_cb, NULL);
180 }
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100181}
182
Neale Ranns4c16d802019-12-17 20:15:03 +0000183static void
Neale Ranns03ce4622020-02-03 10:55:09 +0000184gre_teib_mk_key (const gre_tunnel_t * t,
185 const teib_entry_t * ne, gre_tunnel_key_t * key)
Neale Ranns4c16d802019-12-17 20:15:03 +0000186{
187 const fib_prefix_t *nh;
188
Neale Ranns03ce4622020-02-03 10:55:09 +0000189 nh = teib_entry_get_nh (ne);
Neale Ranns4c16d802019-12-17 20:15:03 +0000190
191 /* construct the key using mode P2P so it can be found in the DP */
192 if (FIB_PROTOCOL_IP4 == nh->fp_proto)
193 gre_mk_key4 (t->tunnel_src.ip4,
194 nh->fp_addr.ip4,
Neale Ranns03ce4622020-02-03 10:55:09 +0000195 teib_entry_get_fib_index (ne),
Neale Ranns59ff9182019-12-29 23:55:18 +0000196 t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v4);
Neale Ranns4c16d802019-12-17 20:15:03 +0000197 else
198 gre_mk_key6 (&t->tunnel_src.ip6,
199 &nh->fp_addr.ip6,
Neale Ranns03ce4622020-02-03 10:55:09 +0000200 teib_entry_get_fib_index (ne),
Neale Ranns59ff9182019-12-29 23:55:18 +0000201 t->type, TUNNEL_MODE_P2P, 0, &key->gtk_v6);
Neale Ranns4c16d802019-12-17 20:15:03 +0000202}
203
Neale Ranns14053c92019-12-29 23:55:18 +0000204/**
Neale Ranns6ba4e412020-10-19 09:59:41 +0000205 * An TEIB entry has been added
Neale Ranns14053c92019-12-29 23:55:18 +0000206 */
Neale Ranns4c16d802019-12-17 20:15:03 +0000207static void
Neale Ranns03ce4622020-02-03 10:55:09 +0000208gre_teib_entry_added (const teib_entry_t * ne)
Neale Ranns4c16d802019-12-17 20:15:03 +0000209{
210 gre_main_t *gm = &gre_main;
Neale Rannse6b83052020-09-17 12:56:47 +0000211 const ip_address_t *nh;
Neale Ranns4c16d802019-12-17 20:15:03 +0000212 gre_tunnel_key_t key;
213 gre_tunnel_t *t;
214 u32 sw_if_index;
215 u32 t_idx;
216
Neale Ranns03ce4622020-02-03 10:55:09 +0000217 sw_if_index = teib_entry_get_sw_if_index (ne);
Neale Ranns4c16d802019-12-17 20:15:03 +0000218 if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
219 return;
220
221 t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
222
223 if (INDEX_INVALID == t_idx)
224 return;
225
Neale Ranns14053c92019-12-29 23:55:18 +0000226 /* entry has been added on an interface for which there is a GRE tunnel */
Neale Ranns4c16d802019-12-17 20:15:03 +0000227 t = pool_elt_at_index (gm->tunnels, t_idx);
228
Neale Ranns14053c92019-12-29 23:55:18 +0000229 if (t->mode != TUNNEL_MODE_MP)
230 return;
231
232 /* the next-hop (underlay) of the NHRP entry will form part of the key for
233 * ingress lookup to match packets to this interface */
Neale Ranns03ce4622020-02-03 10:55:09 +0000234 gre_teib_mk_key (t, ne, &key);
Neale Ranns4c16d802019-12-17 20:15:03 +0000235 gre_tunnel_db_add (t, &key);
Neale Ranns14053c92019-12-29 23:55:18 +0000236
237 /* update the rewrites for each of the adjacencies for this peer (overlay)
238 * using the next-hop (underlay) */
239 mgre_walk_ctx_t ctx = {
240 .t = t,
241 .ne = ne
242 };
Neale Ranns03ce4622020-02-03 10:55:09 +0000243 nh = teib_entry_get_peer (ne);
244 adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne),
Neale Rannse6b83052020-09-17 12:56:47 +0000245 (AF_IP4 == ip_addr_version (nh) ?
Neale Ranns14053c92019-12-29 23:55:18 +0000246 FIB_PROTOCOL_IP4 :
Neale Rannse6b83052020-09-17 12:56:47 +0000247 FIB_PROTOCOL_IP6),
248 &ip_addr_46 (nh), mgre_mk_complete_walk, &ctx);
Neale Ranns4c16d802019-12-17 20:15:03 +0000249}
250
251static void
Neale Ranns03ce4622020-02-03 10:55:09 +0000252gre_teib_entry_deleted (const teib_entry_t * ne)
Neale Ranns4c16d802019-12-17 20:15:03 +0000253{
254 gre_main_t *gm = &gre_main;
Neale Rannse6b83052020-09-17 12:56:47 +0000255 const ip_address_t *nh;
Neale Ranns4c16d802019-12-17 20:15:03 +0000256 gre_tunnel_key_t key;
257 gre_tunnel_t *t;
258 u32 sw_if_index;
259 u32 t_idx;
260
Neale Ranns03ce4622020-02-03 10:55:09 +0000261 sw_if_index = teib_entry_get_sw_if_index (ne);
Neale Ranns4c16d802019-12-17 20:15:03 +0000262 if (vec_len (gm->tunnel_index_by_sw_if_index) < sw_if_index)
263 return;
264
265 t_idx = gm->tunnel_index_by_sw_if_index[sw_if_index];
266
267 if (INDEX_INVALID == t_idx)
268 return;
269
270 t = pool_elt_at_index (gm->tunnels, t_idx);
271
Neale Ranns14053c92019-12-29 23:55:18 +0000272 /* remove the next-hop as an ingress lookup key */
Neale Ranns03ce4622020-02-03 10:55:09 +0000273 gre_teib_mk_key (t, ne, &key);
Neale Ranns4c16d802019-12-17 20:15:03 +0000274 gre_tunnel_db_remove (t, &key);
Neale Ranns14053c92019-12-29 23:55:18 +0000275
Neale Ranns03ce4622020-02-03 10:55:09 +0000276 nh = teib_entry_get_peer (ne);
Neale Ranns14053c92019-12-29 23:55:18 +0000277
278 /* make all the adjacencies incomplete */
Neale Ranns03ce4622020-02-03 10:55:09 +0000279 adj_nbr_walk_nh (teib_entry_get_sw_if_index (ne),
Neale Rannse6b83052020-09-17 12:56:47 +0000280 (AF_IP4 == ip_addr_version (nh) ?
Neale Ranns14053c92019-12-29 23:55:18 +0000281 FIB_PROTOCOL_IP4 :
Neale Rannse6b83052020-09-17 12:56:47 +0000282 FIB_PROTOCOL_IP6),
283 &ip_addr_46 (nh), mgre_mk_incomplete_walk, t);
Neale Ranns4c16d802019-12-17 20:15:03 +0000284}
285
286static walk_rc_t
Neale Ranns03ce4622020-02-03 10:55:09 +0000287gre_tunnel_delete_teib_walk (index_t nei, void *ctx)
Neale Ranns4c16d802019-12-17 20:15:03 +0000288{
289 gre_tunnel_t *t = ctx;
290 gre_tunnel_key_t key;
291
Neale Ranns03ce4622020-02-03 10:55:09 +0000292 gre_teib_mk_key (t, teib_entry_get (nei), &key);
Neale Ranns4c16d802019-12-17 20:15:03 +0000293 gre_tunnel_db_remove (t, &key);
294
295 return (WALK_CONTINUE);
296}
297
298static walk_rc_t
Neale Ranns03ce4622020-02-03 10:55:09 +0000299gre_tunnel_add_teib_walk (index_t nei, void *ctx)
Neale Ranns4c16d802019-12-17 20:15:03 +0000300{
301 gre_tunnel_t *t = ctx;
302 gre_tunnel_key_t key;
303
Neale Ranns03ce4622020-02-03 10:55:09 +0000304 gre_teib_mk_key (t, teib_entry_get (nei), &key);
Neale Ranns4c16d802019-12-17 20:15:03 +0000305 gre_tunnel_db_add (t, &key);
306
307 return (WALK_CONTINUE);
308}
309
Ciara Loftus7eac9162016-09-30 15:47:03 +0100310static int
Neale Ranns5a8844b2019-04-16 07:15:35 +0000311vnet_gre_tunnel_add (vnet_gre_tunnel_add_del_args_t * a,
John Loa43ccae2018-02-13 17:15:23 -0500312 u32 outer_fib_index, u32 * sw_if_indexp)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700313{
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530314 gre_main_t *gm = &gre_main;
315 vnet_main_t *vnm = gm->vnet_main;
316 ip4_main_t *im4 = &ip4_main;
317 ip6_main_t *im6 = &ip6_main;
318 gre_tunnel_t *t;
319 vnet_hw_interface_t *hi;
Chris Luke27fe48f2016-04-28 13:44:38 -0400320 u32 hw_if_index, sw_if_index;
David Hothama8cd3092016-09-19 09:55:07 -0700321 clib_error_t *error;
Ciara Loftus7eac9162016-09-30 15:47:03 +0100322 u8 is_ipv6 = a->is_ipv6;
Neale Ranns33ce60d2017-12-14 08:51:32 -0800323 gre_tunnel_key_t key;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700324
John Loa43ccae2018-02-13 17:15:23 -0500325 t = gre_tunnel_db_find (a, outer_fib_index, &key);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100326 if (NULL != t)
John Loa43ccae2018-02-13 17:15:23 -0500327 return VNET_API_ERROR_IF_ALREADY_EXISTS;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700328
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100329 pool_get_aligned (gm->tunnels, t, CLIB_CACHE_LINE_BYTES);
Dave Barachb7b92992018-10-17 10:38:51 -0400330 clib_memset (t, 0, sizeof (*t));
John Loa43ccae2018-02-13 17:15:23 -0500331
332 /* Reconcile the real dev_instance and a possible requested instance */
333 u32 t_idx = t - gm->tunnels; /* tunnel index (or instance) */
334 u32 u_idx = a->instance; /* user specified instance */
335 if (u_idx == ~0)
336 u_idx = t_idx;
337 if (hash_get (gm->instance_used, u_idx))
338 {
339 pool_put (gm->tunnels, t);
340 return VNET_API_ERROR_INSTANCE_IN_USE;
341 }
342 hash_set (gm->instance_used, u_idx, 1);
343
344 t->dev_instance = t_idx; /* actual */
345 t->user_instance = u_idx; /* name */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700346
Neale Ranns5a8844b2019-04-16 07:15:35 +0000347 t->type = a->type;
Neale Ranns5f8f6172019-04-18 10:23:56 +0000348 t->mode = a->mode;
Neale Rannse5b94dd2019-12-31 05:13:14 +0000349 t->flags = a->flags;
John Loa43ccae2018-02-13 17:15:23 -0500350 if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
351 t->session_id = a->session_id;
Neale Ranns177bbdc2016-11-15 09:46:51 +0000352
John Loa43ccae2018-02-13 17:15:23 -0500353 if (t->type == GRE_TUNNEL_TYPE_L3)
Neale Ranns5f8f6172019-04-18 10:23:56 +0000354 {
Neale Ranns59ff9182019-12-29 23:55:18 +0000355 if (t->mode == TUNNEL_MODE_P2P)
Neale Ranns5f8f6172019-04-18 10:23:56 +0000356 hw_if_index =
357 vnet_register_interface (vnm, gre_device_class.index, t_idx,
358 gre_hw_interface_class.index, t_idx);
359 else
360 hw_if_index =
361 vnet_register_interface (vnm, gre_device_class.index, t_idx,
362 mgre_hw_interface_class.index, t_idx);
363 }
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530364 else
365 {
John Loa43ccae2018-02-13 17:15:23 -0500366 /* Default MAC address (d00b:eed0:0000 + sw_if_index) */
John Lo25d417f2018-02-15 15:47:53 -0500367 u8 address[6] =
368 { 0xd0, 0x0b, 0xee, 0xd0, (u8) (t_idx >> 8), (u8) t_idx };
369 error =
370 ethernet_register_interface (vnm, gre_device_class.index, t_idx,
371 address, &hw_if_index, 0);
John Loa43ccae2018-02-13 17:15:23 -0500372 if (error)
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530373 {
John Loa43ccae2018-02-13 17:15:23 -0500374 clib_error_report (error);
375 return VNET_API_ERROR_INVALID_REGISTRATION;
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530376 }
Chris Luke27fe48f2016-04-28 13:44:38 -0400377 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700378
John Loa43ccae2018-02-13 17:15:23 -0500379 /* Set GRE tunnel interface output node (not used for L3 payload) */
Neale Ranns07bbaef2020-04-09 07:34:08 -0400380 if (GRE_TUNNEL_TYPE_ERSPAN == t->type)
381 vnet_set_interface_output_node (vnm, hw_if_index,
382 gre_erspan_encap_node.index);
383 else
384 vnet_set_interface_output_node (vnm, hw_if_index,
385 gre_teb_encap_node.index);
John Loa43ccae2018-02-13 17:15:23 -0500386
387 hi = vnet_get_hw_interface (vnm, hw_if_index);
388 sw_if_index = hi->sw_if_index;
389
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100390 t->hw_if_index = hw_if_index;
391 t->outer_fib_index = outer_fib_index;
392 t->sw_if_index = sw_if_index;
Neale Rannsad422ed2016-11-02 14:20:04 +0000393 t->l2_adj_index = ADJ_INDEX_INVALID;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700394
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100395 vec_validate_init_empty (gm->tunnel_index_by_sw_if_index, sw_if_index, ~0);
John Loa43ccae2018-02-13 17:15:23 -0500396 gm->tunnel_index_by_sw_if_index[sw_if_index] = t_idx;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700397
Ciara Loftus7eac9162016-09-30 15:47:03 +0100398 if (!is_ipv6)
399 {
400 vec_validate (im4->fib_index_by_sw_if_index, sw_if_index);
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530401 hi->min_packet_bytes =
402 64 + sizeof (gre_header_t) + sizeof (ip4_header_t);
Ciara Loftus7eac9162016-09-30 15:47:03 +0100403 }
404 else
405 {
406 vec_validate (im6->fib_index_by_sw_if_index, sw_if_index);
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530407 hi->min_packet_bytes =
408 64 + sizeof (gre_header_t) + sizeof (ip6_header_t);
Ciara Loftus7eac9162016-09-30 15:47:03 +0100409 }
Chris Luke71649002016-05-06 11:51:54 -0400410
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100411 /* Standard default gre MTU. */
Ole Troand7231612018-06-07 10:17:57 +0200412 vnet_sw_interface_set_mtu (vnm, sw_if_index, 9000);
Damjan Marionfe7d4a22018-04-13 19:43:39 +0200413
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100414 /*
415 * source the FIB entry for the tunnel's destination
416 * and become a child thereof. The tunnel will then get poked
417 * when the forwarding for the entry updates, and the tunnel can
418 * re-stack accordingly
419 */
Ciara Loftus7eac9162016-09-30 15:47:03 +0100420
421 clib_memcpy (&t->tunnel_src, &a->src, sizeof (t->tunnel_src));
422 t->tunnel_dst.fp_len = !is_ipv6 ? 32 : 128;
423 t->tunnel_dst.fp_proto = !is_ipv6 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
424 t->tunnel_dst.fp_addr = a->dst;
425
Neale Ranns33ce60d2017-12-14 08:51:32 -0800426 gre_tunnel_db_add (t, &key);
Neale Ranns4c16d802019-12-17 20:15:03 +0000427
Neale Ranns59ff9182019-12-29 23:55:18 +0000428 if (t->mode == TUNNEL_MODE_MP)
Neale Ranns03ce4622020-02-03 10:55:09 +0000429 teib_walk_itf (t->sw_if_index, gre_tunnel_add_teib_walk, t);
Neale Ranns4c16d802019-12-17 20:15:03 +0000430
John Loa43ccae2018-02-13 17:15:23 -0500431 if (t->type == GRE_TUNNEL_TYPE_ERSPAN)
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530432 {
John Loa43ccae2018-02-13 17:15:23 -0500433 gre_sn_key_t skey;
434 gre_sn_t *gre_sn;
435
436 gre_mk_sn_key (t, &skey);
437 gre_sn = (gre_sn_t *) hash_get_mem (gm->seq_num_by_key, &skey);
438 if (gre_sn != NULL)
439 {
440 gre_sn->ref_count++;
441 t->gre_sn = gre_sn;
442 }
443 else
444 {
445 gre_sn = clib_mem_alloc (sizeof (gre_sn_t));
446 gre_sn->seq_num = 0;
447 gre_sn->ref_count = 1;
448 t->gre_sn = gre_sn;
449 hash_set_mem_alloc (&gm->seq_num_by_key, &skey, (uword) gre_sn);
450 }
451 }
452
John Loa43ccae2018-02-13 17:15:23 -0500453 if (t->type != GRE_TUNNEL_TYPE_L3)
454 {
455 t->l2_adj_index = adj_nbr_add_or_lock
456 (t->tunnel_dst.fp_proto, VNET_LINK_ETHERNET, &zero_addr, sw_if_index);
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530457 gre_update_adj (vnm, t->sw_if_index, t->l2_adj_index);
458 }
Chris Luke27fe48f2016-04-28 13:44:38 -0400459
460 if (sw_if_indexp)
461 *sw_if_indexp = sw_if_index;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700462
Jakub Grajciarf03beca2019-05-24 08:25:03 +0200463 /* register gre46-input nodes */
464 ip4_register_protocol (IP_PROTOCOL_GRE, gre4_input_node.index);
465 ip6_register_protocol (IP_PROTOCOL_GRE, gre6_input_node.index);
466
Ed Warnickecb9cada2015-12-08 15:45:58 -0700467 return 0;
468}
469
Ciara Loftus7eac9162016-09-30 15:47:03 +0100470static int
Neale Ranns5a8844b2019-04-16 07:15:35 +0000471vnet_gre_tunnel_delete (vnet_gre_tunnel_add_del_args_t * a,
John Loa43ccae2018-02-13 17:15:23 -0500472 u32 outer_fib_index, u32 * sw_if_indexp)
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100473{
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530474 gre_main_t *gm = &gre_main;
475 vnet_main_t *vnm = gm->vnet_main;
476 gre_tunnel_t *t;
Neale Ranns33ce60d2017-12-14 08:51:32 -0800477 gre_tunnel_key_t key;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100478 u32 sw_if_index;
John Lo101e0052018-01-06 00:22:54 -0500479
John Loa43ccae2018-02-13 17:15:23 -0500480 t = gre_tunnel_db_find (a, outer_fib_index, &key);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100481 if (NULL == t)
482 return VNET_API_ERROR_NO_SUCH_ENTRY;
483
Neale Ranns59ff9182019-12-29 23:55:18 +0000484 if (t->mode == TUNNEL_MODE_MP)
Neale Ranns03ce4622020-02-03 10:55:09 +0000485 teib_walk_itf (t->sw_if_index, gre_tunnel_delete_teib_walk, t);
Neale Ranns4c16d802019-12-17 20:15:03 +0000486
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100487 sw_if_index = t->sw_if_index;
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530488 vnet_sw_interface_set_flags (vnm, sw_if_index, 0 /* down */ );
John Loa43ccae2018-02-13 17:15:23 -0500489
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100490 /* make sure tunnel is removed from l2 bd or xconnect */
Neale Rannsb4743802018-09-05 09:13:57 -0700491 set_int_l2_mode (gm->vlib_main, vnm, MODE_L3, sw_if_index, 0,
492 L2_BD_PORT_TYPE_NORMAL, 0, 0);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100493 gm->tunnel_index_by_sw_if_index[sw_if_index] = ~0;
Neale Ranns177bbdc2016-11-15 09:46:51 +0000494
John Loa43ccae2018-02-13 17:15:23 -0500495 if (t->type == GRE_TUNNEL_TYPE_L3)
496 vnet_delete_hw_interface (vnm, t->hw_if_index);
497 else
498 ethernet_delete_interface (vnm, t->hw_if_index);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100499
Neale Rannsad422ed2016-11-02 14:20:04 +0000500 if (t->l2_adj_index != ADJ_INDEX_INVALID)
Neale Ranns4c3ba812019-03-26 07:02:58 +0000501 {
502 adj_midchain_delegate_unstack (t->l2_adj_index);
503 adj_unlock (t->l2_adj_index);
504 }
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100505
John Loa43ccae2018-02-13 17:15:23 -0500506 ASSERT ((t->type != GRE_TUNNEL_TYPE_ERSPAN) || (t->gre_sn != NULL));
507 if ((t->type == GRE_TUNNEL_TYPE_ERSPAN) && (t->gre_sn->ref_count-- == 1))
508 {
509 gre_sn_key_t skey;
510 gre_mk_sn_key (t, &skey);
511 hash_unset_mem_free (&gm->seq_num_by_key, &skey);
512 clib_mem_free (t->gre_sn);
513 }
514
515 hash_unset (gm->instance_used, t->user_instance);
Neale Ranns4c16d802019-12-17 20:15:03 +0000516 gre_tunnel_db_remove (t, &key);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100517 pool_put (gm->tunnels, t);
518
519 if (sw_if_indexp)
520 *sw_if_indexp = sw_if_index;
521
522 return 0;
523}
524
525int
Neale Ranns5a8844b2019-04-16 07:15:35 +0000526vnet_gre_tunnel_add_del (vnet_gre_tunnel_add_del_args_t * a,
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530527 u32 * sw_if_indexp)
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100528{
John Loa43ccae2018-02-13 17:15:23 -0500529 u32 outer_fib_index;
530
Neale Ranns5a59b2b2020-10-19 14:47:20 +0000531 outer_fib_index = fib_table_find ((a->is_ipv6 ?
532 FIB_PROTOCOL_IP6 :
533 FIB_PROTOCOL_IP4), a->outer_table_id);
John Loa43ccae2018-02-13 17:15:23 -0500534
535 if (~0 == outer_fib_index)
536 return VNET_API_ERROR_NO_SUCH_FIB;
537
538 if (a->session_id > GTK_SESSION_ID_MAX)
539 return VNET_API_ERROR_INVALID_SESSION_ID;
540
Neale Ranns59ff9182019-12-29 23:55:18 +0000541 if (a->mode == TUNNEL_MODE_MP && !ip46_address_is_zero (&a->dst))
Neale Ranns4c16d802019-12-17 20:15:03 +0000542 return (VNET_API_ERROR_INVALID_DST_ADDRESS);
543
John Loa43ccae2018-02-13 17:15:23 -0500544 if (a->is_add)
545 return (vnet_gre_tunnel_add (a, outer_fib_index, sw_if_indexp));
546 else
547 return (vnet_gre_tunnel_delete (a, outer_fib_index, sw_if_indexp));
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100548}
549
Neale Rannsb80c5362016-10-08 13:03:40 +0100550clib_error_t *
551gre_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index, u32 flags)
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100552{
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530553 gre_main_t *gm = &gre_main;
554 vnet_hw_interface_t *hi;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100555 gre_tunnel_t *t;
Neale Rannsb80c5362016-10-08 13:03:40 +0100556 u32 ti;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100557
Neale Rannsb80c5362016-10-08 13:03:40 +0100558 hi = vnet_get_hw_interface (vnm, hw_if_index);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100559
Neale Rannsb80c5362016-10-08 13:03:40 +0100560 if (NULL == gm->tunnel_index_by_sw_if_index ||
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530561 hi->sw_if_index >= vec_len (gm->tunnel_index_by_sw_if_index))
562 return (NULL);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100563
Neale Rannsb80c5362016-10-08 13:03:40 +0100564 ti = gm->tunnel_index_by_sw_if_index[hi->sw_if_index];
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100565
Neale Rannsb80c5362016-10-08 13:03:40 +0100566 if (~0 == ti)
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530567 /* not one of ours */
568 return (NULL);
Neale Rannsb80c5362016-10-08 13:03:40 +0100569
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530570 t = pool_elt_at_index (gm->tunnels, ti);
Neale Rannsb80c5362016-10-08 13:03:40 +0100571
572 if (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP)
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530573 vnet_hw_interface_set_flags (vnm, hw_if_index,
574 VNET_HW_INTERFACE_FLAG_LINK_UP);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100575 else
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530576 vnet_hw_interface_set_flags (vnm, hw_if_index, 0 /* down */ );
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100577
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530578 gre_tunnel_restack (t);
Neale Rannsb80c5362016-10-08 13:03:40 +0100579
580 return /* no error */ 0;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100581}
Ed Warnickecb9cada2015-12-08 15:45:58 -0700582
583static clib_error_t *
584create_gre_tunnel_command_fn (vlib_main_t * vm,
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530585 unformat_input_t * input,
586 vlib_cli_command_t * cmd)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700587{
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530588 unformat_input_t _line_input, *line_input = &_line_input;
Neale Ranns5a8844b2019-04-16 07:15:35 +0000589 vnet_gre_tunnel_add_del_args_t _a, *a = &_a;
Neale Ranns5f8f6172019-04-18 10:23:56 +0000590 ip46_address_t src = ip46_address_initializer, dst =
591 ip46_address_initializer;
John Loa43ccae2018-02-13 17:15:23 -0500592 u32 instance = ~0;
Neale Ranns5f8f6172019-04-18 10:23:56 +0000593 u32 outer_table_id = 0;
John Loa43ccae2018-02-13 17:15:23 -0500594 gre_tunnel_type_t t_type = GRE_TUNNEL_TYPE_L3;
Neale Ranns59ff9182019-12-29 23:55:18 +0000595 tunnel_mode_t t_mode = TUNNEL_MODE_P2P;
Mohammed Hawari59b792f2020-12-01 11:30:57 +0100596 tunnel_encap_decap_flags_t flags = TUNNEL_ENCAP_DECAP_FLAG_NONE;
John Loa43ccae2018-02-13 17:15:23 -0500597 u32 session_id = 0;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700598 int rv;
Chris Luke27fe48f2016-04-28 13:44:38 -0400599 u8 is_add = 1;
Pierre Pfister78ea9c22016-05-23 12:51:54 +0100600 u32 sw_if_index;
Billy McFalla9a20e72017-02-15 11:39:12 -0500601 clib_error_t *error = NULL;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700602
603 /* Get a line of input. */
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530604 if (!unformat_user (input, unformat_line_input, line_input))
Ed Warnickecb9cada2015-12-08 15:45:58 -0700605 return 0;
606
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530607 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
608 {
609 if (unformat (line_input, "del"))
610 is_add = 0;
John Loa43ccae2018-02-13 17:15:23 -0500611 else if (unformat (line_input, "instance %d", &instance))
612 ;
Neale Ranns5f8f6172019-04-18 10:23:56 +0000613 else if (unformat (line_input, "src %U", unformat_ip46_address, &src))
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530614 ;
Neale Ranns5f8f6172019-04-18 10:23:56 +0000615 else if (unformat (line_input, "dst %U", unformat_ip46_address, &dst))
616 ;
617 else if (unformat (line_input, "outer-table-id %d", &outer_table_id))
618 ;
619 else if (unformat (line_input, "multipoint"))
Neale Ranns59ff9182019-12-29 23:55:18 +0000620 t_mode = TUNNEL_MODE_MP;
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530621 else if (unformat (line_input, "teb"))
John Loa43ccae2018-02-13 17:15:23 -0500622 t_type = GRE_TUNNEL_TYPE_TEB;
623 else if (unformat (line_input, "erspan %d", &session_id))
624 t_type = GRE_TUNNEL_TYPE_ERSPAN;
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530625 else
Mohammed Hawari59b792f2020-12-01 11:30:57 +0100626 if (unformat
627 (line_input, "flags %U", unformat_tunnel_encap_decap_flags,
628 &flags))
629 ;
630 else
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530631 {
632 error = clib_error_return (0, "unknown input `%U'",
633 format_unformat_error, line_input);
634 goto done;
635 }
636 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700637
Neale Ranns5f8f6172019-04-18 10:23:56 +0000638 if (ip46_address_is_equal (&src, &dst))
Billy McFalla9a20e72017-02-15 11:39:12 -0500639 {
640 error = clib_error_return (0, "src and dst are identical");
641 goto done;
642 }
Ed Warnickecb9cada2015-12-08 15:45:58 -0700643
Neale Ranns59ff9182019-12-29 23:55:18 +0000644 if (t_mode != TUNNEL_MODE_MP && ip46_address_is_zero (&dst))
Ciara Loftus7eac9162016-09-30 15:47:03 +0100645 {
Neale Ranns5f8f6172019-04-18 10:23:56 +0000646 error = clib_error_return (0, "destination address not specified");
647 goto done;
648 }
649
650 if (ip46_address_is_zero (&src))
651 {
652 error = clib_error_return (0, "source address not specified");
653 goto done;
654 }
655
656 if (ip46_address_is_ip4 (&src) != ip46_address_is_ip4 (&dst))
657 {
658 error =
659 clib_error_return (0, "src and dst address must be the same AF");
Ciara Loftus7eac9162016-09-30 15:47:03 +0100660 goto done;
661 }
662
Dave Barachb7b92992018-10-17 10:38:51 -0400663 clib_memset (a, 0, sizeof (*a));
John Loa43ccae2018-02-13 17:15:23 -0500664 a->is_add = is_add;
Neale Ranns5f8f6172019-04-18 10:23:56 +0000665 a->outer_table_id = outer_table_id;
Neale Ranns5a8844b2019-04-16 07:15:35 +0000666 a->type = t_type;
Neale Ranns5f8f6172019-04-18 10:23:56 +0000667 a->mode = t_mode;
John Loa43ccae2018-02-13 17:15:23 -0500668 a->session_id = session_id;
Neale Ranns5f8f6172019-04-18 10:23:56 +0000669 a->is_ipv6 = !ip46_address_is_ip4 (&src);
John Loa43ccae2018-02-13 17:15:23 -0500670 a->instance = instance;
Mohammed Hawari59b792f2020-12-01 11:30:57 +0100671 a->flags = flags;
Neale Ranns5f8f6172019-04-18 10:23:56 +0000672 clib_memcpy (&a->src, &src, sizeof (a->src));
673 clib_memcpy (&a->dst, &dst, sizeof (a->dst));
Chris Luke27fe48f2016-04-28 13:44:38 -0400674
Neale Ranns5a8844b2019-04-16 07:15:35 +0000675 rv = vnet_gre_tunnel_add_del (a, &sw_if_index);
Chris Luke27fe48f2016-04-28 13:44:38 -0400676
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530677 switch (rv)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700678 {
679 case 0:
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530680 vlib_cli_output (vm, "%U\n", format_vnet_sw_if_index_name,
681 vnet_get_main (), sw_if_index);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700682 break;
John Loa43ccae2018-02-13 17:15:23 -0500683 case VNET_API_ERROR_IF_ALREADY_EXISTS:
Billy McFalla9a20e72017-02-15 11:39:12 -0500684 error = clib_error_return (0, "GRE tunnel already exists...");
685 goto done;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700686 case VNET_API_ERROR_NO_SUCH_FIB:
Neale Ranns5f8f6172019-04-18 10:23:56 +0000687 error = clib_error_return (0, "outer table ID %d doesn't exist\n",
688 outer_table_id);
Billy McFalla9a20e72017-02-15 11:39:12 -0500689 goto done;
John Loa43ccae2018-02-13 17:15:23 -0500690 case VNET_API_ERROR_NO_SUCH_ENTRY:
691 error = clib_error_return (0, "GRE tunnel doesn't exist");
692 goto done;
693 case VNET_API_ERROR_INVALID_SESSION_ID:
694 error = clib_error_return (0, "session ID %d out of range\n",
695 session_id);
696 goto done;
697 case VNET_API_ERROR_INSTANCE_IN_USE:
698 error = clib_error_return (0, "Instance is in use");
699 goto done;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700700 default:
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530701 error =
Neale Ranns5a8844b2019-04-16 07:15:35 +0000702 clib_error_return (0, "vnet_gre_tunnel_add_del returned %d", rv);
Billy McFalla9a20e72017-02-15 11:39:12 -0500703 goto done;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700704 }
705
Billy McFalla9a20e72017-02-15 11:39:12 -0500706done:
707 unformat_free (line_input);
708
709 return error;
Ed Warnickecb9cada2015-12-08 15:45:58 -0700710}
711
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530712/* *INDENT-OFF* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700713VLIB_CLI_COMMAND (create_gre_tunnel_command, static) = {
714 .path = "create gre tunnel",
John Loa43ccae2018-02-13 17:15:23 -0500715 .short_help = "create gre tunnel src <addr> dst <addr> [instance <n>] "
Neale Rannsae0d46e2020-09-22 13:20:27 +0000716 "[outer-fib-id <fib>] [teb | erspan <session-id>] [del] "
717 "[multipoint]",
Ed Warnickecb9cada2015-12-08 15:45:58 -0700718 .function = create_gre_tunnel_command_fn,
719};
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530720/* *INDENT-ON* */
Ed Warnickecb9cada2015-12-08 15:45:58 -0700721
Chris Luke27fe48f2016-04-28 13:44:38 -0400722static clib_error_t *
723show_gre_tunnel_command_fn (vlib_main_t * vm,
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530724 unformat_input_t * input,
725 vlib_cli_command_t * cmd)
Chris Luke27fe48f2016-04-28 13:44:38 -0400726{
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530727 gre_main_t *gm = &gre_main;
728 gre_tunnel_t *t;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100729 u32 ti = ~0;
Chris Luke27fe48f2016-04-28 13:44:38 -0400730
731 if (pool_elts (gm->tunnels) == 0)
732 vlib_cli_output (vm, "No GRE tunnels configured...");
733
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100734 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
735 {
736 if (unformat (input, "%d", &ti))
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530737 ;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100738 else
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530739 break;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100740 }
741
742 if (~0 == ti)
743 {
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530744 /* *INDENT-OFF* */
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100745 pool_foreach (t, gm->tunnels,
746 ({
Neale Rannsb80c5362016-10-08 13:03:40 +0100747 vlib_cli_output (vm, "%U", format_gre_tunnel, t);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100748 }));
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530749 /* *INDENT-ON* */
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100750 }
751 else
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530752 {
753 t = pool_elt_at_index (gm->tunnels, ti);
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100754
Neale Rannsb80c5362016-10-08 13:03:40 +0100755 vlib_cli_output (vm, "%U", format_gre_tunnel, t);
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530756 }
Chris Luke27fe48f2016-04-28 13:44:38 -0400757
758 return 0;
759}
760
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530761/* *INDENT-OFF* */
Chris Luke27fe48f2016-04-28 13:44:38 -0400762VLIB_CLI_COMMAND (show_gre_tunnel_command, static) = {
763 .path = "show gre tunnel",
764 .function = show_gre_tunnel_command_fn,
765};
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530766/* *INDENT-ON* */
Chris Luke27fe48f2016-04-28 13:44:38 -0400767
Neale Ranns03ce4622020-02-03 10:55:09 +0000768const static teib_vft_t gre_teib_vft = {
769 .nv_added = gre_teib_entry_added,
770 .nv_deleted = gre_teib_entry_deleted,
Neale Ranns4c16d802019-12-17 20:15:03 +0000771};
772
Ed Warnickecb9cada2015-12-08 15:45:58 -0700773/* force inclusion from application's main.c */
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530774clib_error_t *
775gre_interface_init (vlib_main_t * vm)
Ed Warnickecb9cada2015-12-08 15:45:58 -0700776{
Neale Ranns03ce4622020-02-03 10:55:09 +0000777 teib_register (&gre_teib_vft);
Neale Ranns4c16d802019-12-17 20:15:03 +0000778
Neale Ranns4c3ba812019-03-26 07:02:58 +0000779 return (NULL);
Ed Warnickecb9cada2015-12-08 15:45:58 -0700780}
Swarup Nayak9ff647a2017-11-27 10:27:43 +0530781
782VLIB_INIT_FUNCTION (gre_interface_init);
783
784/*
785 * fd.io coding-style-patch-verification: ON
786 *
787 * Local Variables:
788 * eval: (c-set-style "gnu")
789 * End:
790 */