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Florin Corase127a7e2016-02-18 22:20:01 +01001/*
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:
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
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.
14 */
15
Filip Tehlara5abdeb2016-07-18 17:35:40 +020016#include <vlibmemory/api.h>
Florin Corase127a7e2016-02-18 22:20:01 +010017#include <vnet/lisp-cp/control.h>
18#include <vnet/lisp-cp/packets.h>
19#include <vnet/lisp-cp/lisp_msg_serdes.h>
Neale Ranns5e575b12016-10-03 09:40:25 +010020#include <vnet/lisp-gpe/lisp_gpe_fwd_entry.h>
21#include <vnet/lisp-gpe/lisp_gpe_tenant.h>
Filip Tehlar4868ff62017-03-09 16:48:39 +010022#include <vnet/lisp-gpe/lisp_gpe_tunnel.h>
Neale Ranns0bfe5d82016-08-25 15:29:12 +010023#include <vnet/fib/fib_entry.h>
24#include <vnet/fib/fib_table.h>
Filip Tehlard5a65db2017-05-17 17:21:10 +020025#include <vnet/ethernet/arp_packet.h>
26#include <vnet/ethernet/packet.h>
Florin Corase127a7e2016-02-18 22:20:01 +010027
Filip Tehlar397fd7d2016-10-26 14:31:24 +020028#include <openssl/evp.h>
29#include <openssl/hmac.h>
30
Filip Tehlaref2a5bf2017-05-30 07:14:46 +020031#define MAX_VALUE_U24 0xffffff
32
Filip Tehlar809bc742017-08-14 19:15:36 +020033/* mapping timer control constants (in seconds) */
34#define TIME_UNTIL_REFETCH_OR_DELETE 20
35#define MAPPING_TIMEOUT (((m->ttl) * 60) - TIME_UNTIL_REFETCH_OR_DELETE)
36
Florin Corasf3dc11a2017-01-24 03:13:43 -080037lisp_cp_main_t lisp_control_main;
38
Filip Tehlarcda70662017-01-16 10:30:03 +010039u8 *format_lisp_cp_input_trace (u8 * s, va_list * args);
Filip Tehlar809bc742017-08-14 19:15:36 +020040static void *send_map_request_thread_fn (void *arg);
Filip Tehlarcda70662017-01-16 10:30:03 +010041
42typedef enum
43{
44 LISP_CP_INPUT_NEXT_DROP,
45 LISP_CP_INPUT_N_NEXT,
46} lisp_cp_input_next_t;
47
Filip Tehlara5abdeb2016-07-18 17:35:40 +020048typedef struct
49{
50 u8 is_resend;
51 gid_address_t seid;
52 gid_address_t deid;
53 u8 smr_invoked;
54} map_request_args_t;
55
Florin Corasdca88042016-09-14 16:01:38 +020056u8
57vnet_lisp_get_map_request_mode (void)
58{
59 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
60 return lcm->map_request_mode;
61}
62
Filip Tehlar397fd7d2016-10-26 14:31:24 +020063static u16
64auth_data_len_by_key_id (lisp_key_type_t key_id)
65{
66 switch (key_id)
67 {
68 case HMAC_SHA_1_96:
69 return SHA1_AUTH_DATA_LEN;
70 case HMAC_SHA_256_128:
71 return SHA256_AUTH_DATA_LEN;
72 default:
73 clib_warning ("unsupported key type: %d!", key_id);
74 return (u16) ~ 0;
75 }
76 return (u16) ~ 0;
77}
78
79static const EVP_MD *
80get_encrypt_fcn (lisp_key_type_t key_id)
81{
82 switch (key_id)
83 {
84 case HMAC_SHA_1_96:
85 return EVP_sha1 ();
86 case HMAC_SHA_256_128:
87 return EVP_sha256 ();
88 default:
89 clib_warning ("unsupported encryption key type: %d!", key_id);
90 break;
91 }
92 return 0;
93}
94
Filip Tehlara5abdeb2016-07-18 17:35:40 +020095static int
96queue_map_request (gid_address_t * seid, gid_address_t * deid,
Florin Corasa2157cf2016-08-16 21:09:14 +020097 u8 smr_invoked, u8 is_resend);
Filip Tehlara5abdeb2016-07-18 17:35:40 +020098
Florin Corasf727db92016-06-23 15:01:58 +020099ip_interface_address_t *
Florin Corasa2157cf2016-08-16 21:09:14 +0200100ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
101 u32 sw_if_index, u8 loop)
Florin Corasf727db92016-06-23 15:01:58 +0200102{
103 vnet_main_t *vnm = vnet_get_main ();
Florin Corasa2157cf2016-08-16 21:09:14 +0200104 vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
Florin Corasf727db92016-06-23 15:01:58 +0200105 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
106 sw_if_index = swif->unnumbered_sw_if_index;
107 u32 ia =
Florin Corasa2157cf2016-08-16 21:09:14 +0200108 (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
109 vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
110 (u32) ~ 0;
111 return pool_elt_at_index ((lm)->if_address_pool, ia);
Florin Corasf727db92016-06-23 15:01:58 +0200112}
Filip Tehlar215104e2016-05-10 16:58:29 +0200113
Florin Corasf727db92016-06-23 15:01:58 +0200114void *
115ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
Florin Corasa2157cf2016-08-16 21:09:14 +0200116 u8 version)
Florin Corasf727db92016-06-23 15:01:58 +0200117{
Florin Corasa2157cf2016-08-16 21:09:14 +0200118 ip_interface_address_t *ia;
Filip Tehlar195bcee2016-05-13 17:37:35 +0200119
Florin Corasf727db92016-06-23 15:01:58 +0200120 ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
121 if (!ia)
122 return 0;
123 return ip_interface_address_get_address (lm, ia);
124}
Filip Tehlar195bcee2016-05-13 17:37:35 +0200125
Florin Corase127a7e2016-02-18 22:20:01 +0100126int
Florin Corasf727db92016-06-23 15:01:58 +0200127ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
Florin Corasa2157cf2016-08-16 21:09:14 +0200128 u8 version, ip_address_t * result)
Florin Corasf727db92016-06-23 15:01:58 +0200129{
Florin Corasa2157cf2016-08-16 21:09:14 +0200130 ip_lookup_main_t *lm;
131 void *addr;
Florin Corasf727db92016-06-23 15:01:58 +0200132
133 lm = (version == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
134 addr = ip_interface_get_first_address (lm, sw_if_index, version);
135 if (!addr)
136 return 0;
137
138 ip_address_set (result, addr, version);
139 return 1;
140}
141
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100142/**
143 * convert from a LISP address to a FIB prefix
144 */
145void
146ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix)
Florin Corasf727db92016-06-23 15:01:58 +0200147{
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100148 if (addr->version == IP4)
149 {
150 prefix->fp_len = 32;
151 prefix->fp_proto = FIB_PROTOCOL_IP4;
152 memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad));
153 memcpy (&prefix->fp_addr.ip4, &addr->ip, sizeof (prefix->fp_addr.ip4));
154 }
Florin Corasf727db92016-06-23 15:01:58 +0200155 else
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100156 {
157 prefix->fp_len = 128;
158 prefix->fp_proto = FIB_PROTOCOL_IP6;
159 memcpy (&prefix->fp_addr.ip6, &addr->ip, sizeof (prefix->fp_addr.ip6));
160 }
Florin Corasf727db92016-06-23 15:01:58 +0200161}
162
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100163/**
164 * convert from a LISP to a FIB prefix
165 */
166void
167ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix,
168 fib_prefix_t * fib_prefix)
Florin Corasf727db92016-06-23 15:01:58 +0200169{
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100170 ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix);
171 fib_prefix->fp_len = ip_prefix->len;
Florin Corasf727db92016-06-23 15:01:58 +0200172}
173
174/**
175 * Find the sw_if_index of the interface that would be used to egress towards
176 * dst.
177 */
178u32
179ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
180{
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100181 fib_node_index_t fei;
182 fib_prefix_t prefix;
Florin Corasf727db92016-06-23 15:01:58 +0200183
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100184 ip_address_to_fib_prefix (dst, &prefix);
Florin Corasf727db92016-06-23 15:01:58 +0200185
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100186 fei = fib_table_lookup (0, &prefix);
187
188 return (fib_entry_get_resolving_interface (fei));
Florin Corasf727db92016-06-23 15:01:58 +0200189}
190
191/**
192 * Find first IP of the interface that would be used to egress towards dst.
193 * Returns 1 if the address is found 0 otherwise.
194 */
195int
196ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
Florin Corasa2157cf2016-08-16 21:09:14 +0200197 ip_address_t * result)
Florin Corasf727db92016-06-23 15:01:58 +0200198{
199 u32 si;
Florin Corasa2157cf2016-08-16 21:09:14 +0200200 ip_lookup_main_t *lm;
201 void *addr = 0;
Florin Corasf727db92016-06-23 15:01:58 +0200202 u8 ipver;
203
Florin Corasa2157cf2016-08-16 21:09:14 +0200204 ASSERT (result != 0);
Florin Corasf727db92016-06-23 15:01:58 +0200205
Florin Corasa2157cf2016-08-16 21:09:14 +0200206 ipver = ip_addr_version (dst);
Florin Corasf727db92016-06-23 15:01:58 +0200207
208 lm = (ipver == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100209 si = ip_fib_get_egress_iface_for_dst (lcm, dst);
Florin Corasf727db92016-06-23 15:01:58 +0200210
Florin Corasa2157cf2016-08-16 21:09:14 +0200211 if ((u32) ~ 0 == si)
Florin Corasf727db92016-06-23 15:01:58 +0200212 return 0;
213
214 /* find the first ip address */
215 addr = ip_interface_get_first_address (lm, si, ipver);
216 if (0 == addr)
217 return 0;
218
219 ip_address_set (result, addr, ipver);
220 return 1;
221}
222
223static int
Filip Tehlar0a8840d2017-10-16 05:48:23 -0700224dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add,
225 u8 with_default_route)
Florin Corasf727db92016-06-23 15:01:58 +0200226{
Neale Ranns5e575b12016-10-03 09:40:25 +0100227 uword *dp_table;
Florin Corasf727db92016-06-23 15:01:58 +0200228
Florin Coras1a1adc72016-07-22 01:45:30 +0200229 if (!is_l2)
Florin Corasf727db92016-06-23 15:01:58 +0200230 {
Florin Corasa2157cf2016-08-16 21:09:14 +0200231 dp_table = hash_get (lcm->table_id_by_vni, vni);
Florin Coras1a1adc72016-07-22 01:45:30 +0200232
233 if (!dp_table)
Florin Corasa2157cf2016-08-16 21:09:14 +0200234 {
235 clib_warning ("vni %d not associated to a vrf!", vni);
236 return VNET_API_ERROR_INVALID_VALUE;
237 }
Florin Coras1a1adc72016-07-22 01:45:30 +0200238 }
239 else
240 {
Florin Corasa2157cf2016-08-16 21:09:14 +0200241 dp_table = hash_get (lcm->bd_id_by_vni, vni);
Florin Coras1a1adc72016-07-22 01:45:30 +0200242 if (!dp_table)
Florin Corasa2157cf2016-08-16 21:09:14 +0200243 {
244 clib_warning ("vni %d not associated to a bridge domain!", vni);
245 return VNET_API_ERROR_INVALID_VALUE;
246 }
Florin Corasf727db92016-06-23 15:01:58 +0200247 }
248
Florin Corasf727db92016-06-23 15:01:58 +0200249 /* enable/disable data-plane interface */
250 if (is_add)
251 {
Neale Ranns5e575b12016-10-03 09:40:25 +0100252 if (is_l2)
253 lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
254 else
Filip Tehlar0a8840d2017-10-16 05:48:23 -0700255 lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0],
256 with_default_route);
Florin Corasf727db92016-06-23 15:01:58 +0200257 }
258 else
259 {
Neale Ranns5e575b12016-10-03 09:40:25 +0100260 if (is_l2)
261 lisp_gpe_tenant_l2_iface_unlock (vni);
262 else
263 lisp_gpe_tenant_l3_iface_unlock (vni);
Florin Corasf727db92016-06-23 15:01:58 +0200264 }
265
266 return 0;
267}
268
269static void
Alberto Rodriguez-Natal8d66f9d2017-09-09 14:15:15 -0700270dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 dst_map_index)
Florin Corasf727db92016-06-23 15:01:58 +0200271{
Florin Corasa2157cf2016-08-16 21:09:14 +0200272 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
273 fwd_entry_t *fe = 0;
274 uword *feip = 0;
275 memset (a, 0, sizeof (*a));
Florin Corasf727db92016-06-23 15:01:58 +0200276
Florin Corasa2157cf2016-08-16 21:09:14 +0200277 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
Florin Corasf727db92016-06-23 15:01:58 +0200278 if (!feip)
279 return;
280
Florin Corasa2157cf2016-08-16 21:09:14 +0200281 fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
Florin Corasf727db92016-06-23 15:01:58 +0200282
283 /* delete dp fwd entry */
284 u32 sw_if_index;
285 a->is_add = 0;
Florin Corasbb5c22f2016-08-02 02:31:03 +0200286 a->locator_pairs = fe->locator_pairs;
Filip Tehlar2fdaece2016-09-28 14:27:59 +0200287 a->vni = gid_address_vni (&fe->reid);
288 gid_address_copy (&a->rmt_eid, &fe->reid);
Filip Tehlard5fcc462016-10-17 16:20:18 +0200289 if (fe->is_src_dst)
290 gid_address_copy (&a->lcl_eid, &fe->leid);
Florin Corasf727db92016-06-23 15:01:58 +0200291
Filip Tehlar21511912017-04-07 10:41:42 +0200292 vnet_lisp_gpe_del_fwd_counters (a, feip[0]);
Florin Corasf727db92016-06-23 15:01:58 +0200293 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
294
295 /* delete entry in fwd table */
Florin Corasa2157cf2016-08-16 21:09:14 +0200296 hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
297 vec_free (fe->locator_pairs);
298 pool_put (lcm->fwd_entry_pool, fe);
Florin Corasf727db92016-06-23 15:01:58 +0200299}
300
301/**
302 * Finds first remote locator with best (lowest) priority that has a local
303 * peer locator with an underlying route to it.
304 *
305 */
306static u32
Florin Corasa2157cf2016-08-16 21:09:14 +0200307get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
308 mapping_t * rmt_map, locator_pair_t ** locator_pairs)
Florin Corasf727db92016-06-23 15:01:58 +0200309{
Florin Coras3590ac52016-08-08 16:04:26 +0200310 u32 i, limitp = 0, li, found = 0, esi;
Florin Corasa2157cf2016-08-16 21:09:14 +0200311 locator_set_t *rmt_ls, *lcl_ls;
312 ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
313 locator_t *lp, *rmt = 0;
314 uword *checked = 0;
Florin Corasbb5c22f2016-08-02 02:31:03 +0200315 locator_pair_t pair;
Florin Corasf727db92016-06-23 15:01:58 +0200316
Florin Corasa2157cf2016-08-16 21:09:14 +0200317 rmt_ls =
318 pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
319 lcl_ls =
320 pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
Florin Corasf727db92016-06-23 15:01:58 +0200321
Florin Corasa2157cf2016-08-16 21:09:14 +0200322 if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
Florin Corasf727db92016-06-23 15:01:58 +0200323 return 0;
324
Florin Coras3590ac52016-08-08 16:04:26 +0200325 while (1)
Florin Corasf727db92016-06-23 15:01:58 +0200326 {
327 rmt = 0;
328
329 /* find unvisited remote locator with best priority */
Florin Corasa2157cf2016-08-16 21:09:14 +0200330 for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
331 {
332 if (0 != hash_get (checked, i))
333 continue;
Florin Corasf727db92016-06-23 15:01:58 +0200334
Florin Corasa2157cf2016-08-16 21:09:14 +0200335 li = vec_elt (rmt_ls->locator_indices, i);
336 lp = pool_elt_at_index (lcm->locator_pool, li);
Florin Corasf727db92016-06-23 15:01:58 +0200337
Florin Corasa2157cf2016-08-16 21:09:14 +0200338 /* we don't support non-IP locators for now */
339 if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
340 continue;
Florin Corasf727db92016-06-23 15:01:58 +0200341
Florin Corasa2157cf2016-08-16 21:09:14 +0200342 if ((found && lp->priority == limitp)
343 || (!found && lp->priority >= limitp))
344 {
345 rmt = lp;
Florin Coras3590ac52016-08-08 16:04:26 +0200346
Florin Corasa2157cf2016-08-16 21:09:14 +0200347 /* don't search for locators with lower priority and don't
348 * check this locator again*/
349 limitp = lp->priority;
350 hash_set (checked, i, 1);
351 break;
352 }
353 }
Florin Corasf727db92016-06-23 15:01:58 +0200354 /* check if a local locator with a route to remote locator exists */
355 if (rmt != 0)
Florin Corasa2157cf2016-08-16 21:09:14 +0200356 {
357 /* find egress sw_if_index for rmt locator */
358 esi =
359 ip_fib_get_egress_iface_for_dst (lcm,
360 &gid_address_ip (&rmt->address));
361 if ((u32) ~ 0 == esi)
362 continue;
Florin Corasf727db92016-06-23 15:01:58 +0200363
Florin Corasa2157cf2016-08-16 21:09:14 +0200364 for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
365 {
366 li = vec_elt (lcl_ls->locator_indices, i);
367 locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
Florin Corasf727db92016-06-23 15:01:58 +0200368
Florin Corasa2157cf2016-08-16 21:09:14 +0200369 /* found local locator with the needed sw_if_index */
370 if (sl->sw_if_index == esi)
371 {
372 /* and it has an address */
373 if (0 == ip_interface_get_first_ip_address (lcm,
374 sl->sw_if_index,
375 gid_address_ip_version
376 (&rmt->address),
377 lcl_addr))
378 continue;
Florin Corasf727db92016-06-23 15:01:58 +0200379
Florin Corasa2157cf2016-08-16 21:09:14 +0200380 memset (&pair, 0, sizeof (pair));
381 ip_address_copy (&pair.rmt_loc,
382 &gid_address_ip (&rmt->address));
383 ip_address_copy (&pair.lcl_loc, lcl_addr);
384 pair.weight = rmt->weight;
Filip Tehlarfb9931f2016-12-09 13:52:38 +0100385 pair.priority = rmt->priority;
Florin Corasa2157cf2016-08-16 21:09:14 +0200386 vec_add1 (locator_pairs[0], pair);
387 found = 1;
388 }
389 }
390 }
Florin Corasf727db92016-06-23 15:01:58 +0200391 else
Florin Corasa2157cf2016-08-16 21:09:14 +0200392 break;
Florin Corasf727db92016-06-23 15:01:58 +0200393 }
Florin Coras3590ac52016-08-08 16:04:26 +0200394
Florin Corasa2157cf2016-08-16 21:09:14 +0200395 hash_free (checked);
Florin Coras3590ac52016-08-08 16:04:26 +0200396 return found;
Florin Corasf727db92016-06-23 15:01:58 +0200397}
398
399static void
Florin Corasdca88042016-09-14 16:01:38 +0200400gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
401 fid_address_t * fid)
402{
403 ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
404
405 dst[0] = src[0];
406
407 switch (fid_addr_type (fid))
408 {
409 case FID_ADDR_IP_PREF:
410 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
411 gid_address_ippref (dst) = fid_addr_ippref (fid);
412 break;
413 case FID_ADDR_MAC:
414 gid_address_type (dst) = GID_ADDR_MAC;
415 mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
416 break;
417 default:
418 clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
419 break;
420 }
421}
422
Filip Tehlar397fd7d2016-10-26 14:31:24 +0200423u8
424vnet_lisp_map_register_state_get (void)
425{
426 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
427 return lcm->map_registering;
428}
429
430u8
431vnet_lisp_rloc_probe_state_get (void)
432{
433 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
434 return lcm->rloc_probing;
435}
436
Florin Corasdca88042016-09-14 16:01:38 +0200437static void
Florin Corasa2157cf2016-08-16 21:09:14 +0200438dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
Florin Corasf727db92016-06-23 15:01:58 +0200439{
Florin Corasa2157cf2016-08-16 21:09:14 +0200440 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
Florin Corasba888e42017-01-24 11:38:18 -0800441 gid_address_t *rmt_eid, *lcl_eid;
442 mapping_t *lcl_map, *rmt_map;
Alberto Rodriguez-Natal8d66f9d2017-09-09 14:15:15 -0700443 u32 sw_if_index, **rmts, rmts_idx;
444 uword *feip = 0, *dpid, *rmts_stored_idxp = 0;
Florin Corasa2157cf2016-08-16 21:09:14 +0200445 fwd_entry_t *fe;
Filip Tehlar69a9b762016-09-23 10:00:52 +0200446 u8 type, is_src_dst = 0;
Florin Corasba888e42017-01-24 11:38:18 -0800447 int rv;
Florin Corasf727db92016-06-23 15:01:58 +0200448
Florin Corasa2157cf2016-08-16 21:09:14 +0200449 memset (a, 0, sizeof (*a));
Florin Corasf727db92016-06-23 15:01:58 +0200450
451 /* remove entry if it already exists */
452 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
453 if (feip)
Alberto Rodriguez-Natal8d66f9d2017-09-09 14:15:15 -0700454 dp_del_fwd_entry (lcm, dst_map_index);
Florin Corasf727db92016-06-23 15:01:58 +0200455
Florin Corasba888e42017-01-24 11:38:18 -0800456 /*
457 * Determine local mapping and eid
458 */
Filip Tehlar0a8840d2017-10-16 05:48:23 -0700459 if (lcm->flags & LISP_FLAG_PITR_MODE)
460 {
461 if (lcm->pitr_map_index != ~0)
462 lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
463 else
464 {
465 clib_warning ("no PITR mapping configured!");
466 return;
467 }
468 }
Filip Tehlarf3e3fd32016-09-30 12:47:59 +0200469 else
Florin Corasba888e42017-01-24 11:38:18 -0800470 lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
471 lcl_eid = &lcl_map->eid;
Florin Corasf727db92016-06-23 15:01:58 +0200472
Florin Corasba888e42017-01-24 11:38:18 -0800473 /*
474 * Determine remote mapping and eid
475 */
476 rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
477 rmt_eid = &rmt_map->eid;
478
479 /*
480 * Build and insert data plane forwarding entry
481 */
Florin Corasf727db92016-06-23 15:01:58 +0200482 a->is_add = 1;
483
Filip Tehlard5fcc462016-10-17 16:20:18 +0200484 if (MR_MODE_SRC_DST == lcm->map_request_mode)
Florin Corasdca88042016-09-14 16:01:38 +0200485 {
Florin Corasba888e42017-01-24 11:38:18 -0800486 if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
Filip Tehlard5fcc462016-10-17 16:20:18 +0200487 {
Florin Corasba888e42017-01-24 11:38:18 -0800488 gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
489 &gid_address_sd_dst (rmt_eid));
490 gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
491 &gid_address_sd_src (rmt_eid));
Filip Tehlard5fcc462016-10-17 16:20:18 +0200492 }
493 else
494 {
Florin Corasba888e42017-01-24 11:38:18 -0800495 gid_address_copy (&a->rmt_eid, rmt_eid);
496 gid_address_copy (&a->lcl_eid, lcl_eid);
Filip Tehlard5fcc462016-10-17 16:20:18 +0200497 }
Filip Tehlar69a9b762016-09-23 10:00:52 +0200498 is_src_dst = 1;
Florin Corasdca88042016-09-14 16:01:38 +0200499 }
500 else
Florin Corasba888e42017-01-24 11:38:18 -0800501 gid_address_copy (&a->rmt_eid, rmt_eid);
Florin Corasdca88042016-09-14 16:01:38 +0200502
Florin Corasa2157cf2016-08-16 21:09:14 +0200503 a->vni = gid_address_vni (&a->rmt_eid);
Filip Tehlared6b52b2017-03-22 09:02:33 +0100504 a->is_src_dst = is_src_dst;
Florin Coras1a1adc72016-07-22 01:45:30 +0200505
506 /* get vrf or bd_index associated to vni */
Florin Corasdca88042016-09-14 16:01:38 +0200507 type = gid_address_type (&a->rmt_eid);
Florin Coras1a1adc72016-07-22 01:45:30 +0200508 if (GID_ADDR_IP_PREFIX == type)
509 {
Florin Corasa2157cf2016-08-16 21:09:14 +0200510 dpid = hash_get (lcm->table_id_by_vni, a->vni);
Florin Coras1a1adc72016-07-22 01:45:30 +0200511 if (!dpid)
Florin Corasa2157cf2016-08-16 21:09:14 +0200512 {
513 clib_warning ("vni %d not associated to a vrf!", a->vni);
514 return;
515 }
Florin Coras1a1adc72016-07-22 01:45:30 +0200516 a->table_id = dpid[0];
517 }
518 else if (GID_ADDR_MAC == type)
519 {
Florin Corasa2157cf2016-08-16 21:09:14 +0200520 dpid = hash_get (lcm->bd_id_by_vni, a->vni);
Florin Coras1a1adc72016-07-22 01:45:30 +0200521 if (!dpid)
Florin Corasa2157cf2016-08-16 21:09:14 +0200522 {
523 clib_warning ("vni %d not associated to a bridge domain !", a->vni);
524 return;
525 }
Florin Coras1a1adc72016-07-22 01:45:30 +0200526 a->bd_id = dpid[0];
527 }
528
Florin Corasf727db92016-06-23 15:01:58 +0200529 /* find best locator pair that 1) verifies LISP policy 2) are connected */
Florin Corasba888e42017-01-24 11:38:18 -0800530 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
531
532 /* Either rmt mapping is negative or we can't find underlay path.
533 * Try again with petr if configured */
534 if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
Florin Corasf727db92016-06-23 15:01:58 +0200535 {
Florin Corasba888e42017-01-24 11:38:18 -0800536 rmt_map = lisp_get_petr_mapping (lcm);
537 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
Florin Corasf727db92016-06-23 15:01:58 +0200538 }
539
Florin Corasba888e42017-01-24 11:38:18 -0800540 /* negative entry */
541 if (rv == 0)
542 {
543 a->is_negative = 1;
544 a->action = rmt_map->action;
545 }
Florin Corasf727db92016-06-23 15:01:58 +0200546
Filip Tehlar21511912017-04-07 10:41:42 +0200547 rv = vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
548 if (rv)
549 {
550 if (a->locator_pairs)
551 vec_free (a->locator_pairs);
552 return;
553 }
Florin Corasf727db92016-06-23 15:01:58 +0200554
Filip Tehlar21511912017-04-07 10:41:42 +0200555 /* add tunnel to fwd entry table */
Florin Corasf727db92016-06-23 15:01:58 +0200556 pool_get (lcm->fwd_entry_pool, fe);
Filip Tehlar21511912017-04-07 10:41:42 +0200557 vnet_lisp_gpe_add_fwd_counters (a, fe - lcm->fwd_entry_pool);
558
Florin Corasbb5c22f2016-08-02 02:31:03 +0200559 fe->locator_pairs = a->locator_pairs;
Filip Tehlar2fdaece2016-09-28 14:27:59 +0200560 gid_address_copy (&fe->reid, &a->rmt_eid);
Filip Tehlarb601f222017-01-02 10:22:56 +0100561
562 if (is_src_dst)
563 gid_address_copy (&fe->leid, &a->lcl_eid);
564 else
Florin Corasba888e42017-01-24 11:38:18 -0800565 gid_address_copy (&fe->leid, lcl_eid);
Filip Tehlarb601f222017-01-02 10:22:56 +0100566
Filip Tehlar69a9b762016-09-23 10:00:52 +0200567 fe->is_src_dst = is_src_dst;
Florin Corasf727db92016-06-23 15:01:58 +0200568 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
Florin Corasa2157cf2016-08-16 21:09:14 +0200569 fe - lcm->fwd_entry_pool);
Alberto Rodriguez-Natal8d66f9d2017-09-09 14:15:15 -0700570
571 /* Add rmt mapping to the vector of adjacent mappings to lcl mapping */
572 rmts_stored_idxp =
573 hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index);
574 if (!rmts_stored_idxp)
575 {
576 pool_get (lcm->lcl_to_rmt_adjacencies, rmts);
577 memset (rmts, 0, sizeof (*rmts));
578 rmts_idx = rmts - lcm->lcl_to_rmt_adjacencies;
579 hash_set (lcm->lcl_to_rmt_adjs_by_lcl_idx, src_map_index, rmts_idx);
580 }
581 else
582 {
583 rmts_idx = (u32) (*rmts_stored_idxp);
584 rmts = pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idx);
585 }
586 vec_add1 (rmts[0], dst_map_index);
Florin Corasf727db92016-06-23 15:01:58 +0200587}
588
Filip Tehlarce1aae42017-01-04 10:42:25 +0100589typedef struct
590{
591 u32 si;
592 u32 di;
593} fwd_entry_mt_arg_t;
594
595static void *
596dp_add_fwd_entry_thread_fn (void *arg)
597{
598 fwd_entry_mt_arg_t *a = arg;
599 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
600 dp_add_fwd_entry (lcm, a->si, a->di);
601 return 0;
602}
603
604static int
605dp_add_fwd_entry_from_mt (u32 si, u32 di)
606{
607 fwd_entry_mt_arg_t a;
608
609 memset (&a, 0, sizeof (a));
610 a.si = si;
611 a.di = di;
612
613 vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
614 (u8 *) & a, sizeof (a));
615 return 0;
616}
617
Florin Corasf727db92016-06-23 15:01:58 +0200618/**
Filip Tehlar69a9b762016-09-23 10:00:52 +0200619 * Returns vector of adjacencies.
620 *
621 * The caller must free the vector returned by this function.
622 *
623 * @param vni virtual network identifier
624 * @return vector of adjacencies
625 */
626lisp_adjacency_t *
627vnet_lisp_adjacencies_get_by_vni (u32 vni)
628{
629 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
630 fwd_entry_t *fwd;
631 lisp_adjacency_t *adjs = 0, adj;
632
633 /* *INDENT-OFF* */
634 pool_foreach(fwd, lcm->fwd_entry_pool,
635 ({
636 if (gid_address_vni (&fwd->reid) != vni)
637 continue;
638
639 gid_address_copy (&adj.reid, &fwd->reid);
640 gid_address_copy (&adj.leid, &fwd->leid);
641 vec_add1 (adjs, adj);
642 }));
643 /* *INDENT-ON* */
644
645 return adjs;
646}
647
Filip Tehlar397fd7d2016-10-26 14:31:24 +0200648static lisp_msmr_t *
649get_map_server (ip_address_t * a)
650{
651 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
652 lisp_msmr_t *m;
653
654 vec_foreach (m, lcm->map_servers)
655 {
656 if (!ip_address_cmp (&m->address, a))
657 {
658 return m;
659 }
660 }
661 return 0;
662}
663
664static lisp_msmr_t *
665get_map_resolver (ip_address_t * a)
666{
667 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
668 lisp_msmr_t *m;
669
670 vec_foreach (m, lcm->map_resolvers)
671 {
672 if (!ip_address_cmp (&m->address, a))
673 {
674 return m;
675 }
676 }
677 return 0;
678}
679
680int
681vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
682{
683 u32 i;
684 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
685 lisp_msmr_t _ms, *ms = &_ms;
686
687 if (vnet_lisp_enable_disable_status () == 0)
688 {
689 clib_warning ("LISP is disabled!");
690 return VNET_API_ERROR_LISP_DISABLED;
691 }
692
693 if (is_add)
694 {
695 if (get_map_server (addr))
696 {
697 clib_warning ("map-server %U already exists!", format_ip_address,
698 addr);
699 return -1;
700 }
701
702 memset (ms, 0, sizeof (*ms));
703 ip_address_copy (&ms->address, addr);
704 vec_add1 (lcm->map_servers, ms[0]);
Filip Tehlar7048ff12017-07-27 08:09:14 +0200705
706 if (vec_len (lcm->map_servers) == 1)
707 lcm->do_map_server_election = 1;
Filip Tehlar397fd7d2016-10-26 14:31:24 +0200708 }
709 else
710 {
711 for (i = 0; i < vec_len (lcm->map_servers); i++)
712 {
713 ms = vec_elt_at_index (lcm->map_servers, i);
714 if (!ip_address_cmp (&ms->address, addr))
715 {
Filip Tehlar7048ff12017-07-27 08:09:14 +0200716 if (!ip_address_cmp (&ms->address, &lcm->active_map_server))
717 lcm->do_map_server_election = 1;
718
Filip Tehlar397fd7d2016-10-26 14:31:24 +0200719 vec_del1 (lcm->map_servers, i);
720 break;
721 }
722 }
723 }
724
725 return 0;
726}
727
Filip Tehlar69a9b762016-09-23 10:00:52 +0200728/**
Florin Corasf727db92016-06-23 15:01:58 +0200729 * Add/remove mapping to/from map-cache. Overwriting not allowed.
730 */
731int
732vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
Florin Corasa2157cf2016-08-16 21:09:14 +0200733 u32 * map_index_result)
Florin Corase127a7e2016-02-18 22:20:01 +0100734{
Florin Corasa2157cf2016-08-16 21:09:14 +0200735 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
736 u32 mi, *map_indexp, map_index, i;
Alberto Rodriguez-Natal8d66f9d2017-09-09 14:15:15 -0700737 u32 **rmts = 0, *remote_idxp, rmts_itr, remote_idx;
738 uword *rmts_idxp;
Florin Corasa2157cf2016-08-16 21:09:14 +0200739 mapping_t *m, *old_map;
740 u32 **eid_indexes;
Florin Corase127a7e2016-02-18 22:20:01 +0100741
Filip Tehlaref2a5bf2017-05-30 07:14:46 +0200742 if (gid_address_type (&a->eid) == GID_ADDR_NSH)
743 {
744 if (gid_address_vni (&a->eid) != 0)
745 {
746 clib_warning ("Supported only default VNI for NSH!");
747 return VNET_API_ERROR_INVALID_ARGUMENT;
748 }
749 if (gid_address_nsh_spi (&a->eid) > MAX_VALUE_U24)
750 {
751 clib_warning ("SPI is greater than 24bit!");
752 return VNET_API_ERROR_INVALID_ARGUMENT;
753 }
754 }
755
Florin Corasf727db92016-06-23 15:01:58 +0200756 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
Filip Tehlar53f09e32016-05-19 14:25:44 +0200757 old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
Florin Corase127a7e2016-02-18 22:20:01 +0100758 if (a->is_add)
759 {
760 /* TODO check if overwriting and take appropriate actions */
Florin Corasa2157cf2016-08-16 21:09:14 +0200761 if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
762 {
763 clib_warning ("eid %U found in the eid-table", format_gid_address,
764 &a->eid);
765 return VNET_API_ERROR_VALUE_EXIST;
766 }
Florin Corase127a7e2016-02-18 22:20:01 +0100767
Florin Corasa2157cf2016-08-16 21:09:14 +0200768 pool_get (lcm->mapping_pool, m);
Florin Corasf727db92016-06-23 15:01:58 +0200769 gid_address_copy (&m->eid, &a->eid);
Florin Corase127a7e2016-02-18 22:20:01 +0100770 m->locator_set_index = a->locator_set_index;
771 m->ttl = a->ttl;
Filip Tehlar53f09e32016-05-19 14:25:44 +0200772 m->action = a->action;
Florin Corase127a7e2016-02-18 22:20:01 +0100773 m->local = a->local;
Filip Tehlar3cd9e732016-08-23 10:52:44 +0200774 m->is_static = a->is_static;
Filip Tehlar397fd7d2016-10-26 14:31:24 +0200775 m->key = vec_dup (a->key);
776 m->key_id = a->key_id;
Florin Corase127a7e2016-02-18 22:20:01 +0100777
778 map_index = m - lcm->mapping_pool;
Florin Corasf727db92016-06-23 15:01:58 +0200779 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
Florin Corasa2157cf2016-08-16 21:09:14 +0200780 1);
Florin Corase127a7e2016-02-18 22:20:01 +0100781
Florin Corasa2157cf2016-08-16 21:09:14 +0200782 if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
783 {
784 clib_warning ("Locator set with index %d doesn't exist",
785 a->locator_set_index);
786 return VNET_API_ERROR_INVALID_VALUE;
787 }
Florin Corase127a7e2016-02-18 22:20:01 +0100788
789 /* add eid to list of eids supported by locator-set */
790 vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
Florin Corasa2157cf2016-08-16 21:09:14 +0200791 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
792 a->locator_set_index);
793 vec_add1 (eid_indexes[0], map_index);
Florin Corase127a7e2016-02-18 22:20:01 +0100794
795 if (a->local)
Florin Corasa2157cf2016-08-16 21:09:14 +0200796 {
797 /* mark as local */
798 vec_add1 (lcm->local_mappings_indexes, map_index);
799 }
Florin Corase127a7e2016-02-18 22:20:01 +0100800 map_index_result[0] = map_index;
801 }
802 else
803 {
Florin Coras577c3552016-04-21 00:45:40 +0200804 if (mi == GID_LOOKUP_MISS)
Florin Corasa2157cf2016-08-16 21:09:14 +0200805 {
806 clib_warning ("eid %U not found in the eid-table",
807 format_gid_address, &a->eid);
808 return VNET_API_ERROR_INVALID_VALUE;
809 }
Florin Corase127a7e2016-02-18 22:20:01 +0100810
811 /* clear locator-set to eids binding */
Florin Corasa2157cf2016-08-16 21:09:14 +0200812 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
813 a->locator_set_index);
814 for (i = 0; i < vec_len (eid_indexes[0]); i++)
815 {
816 map_indexp = vec_elt_at_index (eid_indexes[0], i);
817 if (map_indexp[0] == mi)
818 break;
819 }
820 vec_del1 (eid_indexes[0], i);
Florin Corase127a7e2016-02-18 22:20:01 +0100821
822 /* remove local mark if needed */
Florin Corasa2157cf2016-08-16 21:09:14 +0200823 m = pool_elt_at_index (lcm->mapping_pool, mi);
Florin Corase127a7e2016-02-18 22:20:01 +0100824 if (m->local)
Florin Corasa2157cf2016-08-16 21:09:14 +0200825 {
Alberto Rodriguez-Natal8d66f9d2017-09-09 14:15:15 -0700826 /* Remove adjacencies associated with the local mapping */
827 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
828 if (rmts_idxp)
829 {
830 rmts =
831 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
832 vec_foreach (remote_idxp, rmts[0])
833 {
834 dp_del_fwd_entry (lcm, remote_idxp[0]);
835 }
836 vec_free (rmts[0]);
837 pool_put (lcm->lcl_to_rmt_adjacencies, rmts);
838 hash_unset (lcm->lcl_to_rmt_adjs_by_lcl_idx, mi);
839 }
840
Florin Corasa2157cf2016-08-16 21:09:14 +0200841 u32 k, *lm_indexp;
842 for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
843 {
844 lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
845 if (lm_indexp[0] == mi)
846 break;
847 }
848 vec_del1 (lcm->local_mappings_indexes, k);
849 }
Alberto Rodriguez-Natal8d66f9d2017-09-09 14:15:15 -0700850 else
851 {
852 /* Remove remote (if present) from the vectors of lcl-to-rmts
853 * TODO: Address this in a more efficient way.
854 */
855 /* *INDENT-OFF* */
856 pool_foreach (rmts, lcm->lcl_to_rmt_adjacencies,
857 ({
858 vec_foreach_index (rmts_itr, rmts[0])
859 {
860 remote_idx = vec_elt (rmts[0], rmts_itr);
861 if (mi == remote_idx)
862 {
863 vec_del1 (rmts[0], rmts_itr);
864 break;
865 }
866 }
867 }));
868 /* *INDENT-ON* */
869 }
Florin Corase127a7e2016-02-18 22:20:01 +0100870
871 /* remove mapping from dictionary */
Florin Corasf727db92016-06-23 15:01:58 +0200872 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
Filip Tehlar324112f2016-06-02 16:07:38 +0200873 gid_address_free (&m->eid);
Florin Corase127a7e2016-02-18 22:20:01 +0100874 pool_put_index (lcm->mapping_pool, mi);
875 }
876
877 return 0;
878}
879
Florin Corasf727db92016-06-23 15:01:58 +0200880/**
881 * Add/update/delete mapping to/in/from map-cache.
882 */
Florin Coras577c3552016-04-21 00:45:40 +0200883int
884vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
Florin Corasa2157cf2016-08-16 21:09:14 +0200885 u32 * map_index_result)
Florin Coras577c3552016-04-21 00:45:40 +0200886{
Florin Corasa2157cf2016-08-16 21:09:14 +0200887 uword *dp_table = 0;
Florin Corasf727db92016-06-23 15:01:58 +0200888 u32 vni;
Florin Coras1a1adc72016-07-22 01:45:30 +0200889 u8 type;
Florin Corasf727db92016-06-23 15:01:58 +0200890
Florin Corasa2157cf2016-08-16 21:09:14 +0200891 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Florin Coras577c3552016-04-21 00:45:40 +0200892
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +0200893 if (vnet_lisp_enable_disable_status () == 0)
894 {
895 clib_warning ("LISP is disabled!");
896 return VNET_API_ERROR_LISP_DISABLED;
897 }
898
Florin Corasa2157cf2016-08-16 21:09:14 +0200899 vni = gid_address_vni (&a->eid);
900 type = gid_address_type (&a->eid);
Florin Coras1a1adc72016-07-22 01:45:30 +0200901 if (GID_ADDR_IP_PREFIX == type)
Florin Corasa2157cf2016-08-16 21:09:14 +0200902 dp_table = hash_get (lcm->table_id_by_vni, vni);
Florin Coras1a1adc72016-07-22 01:45:30 +0200903 else if (GID_ADDR_MAC == type)
Florin Corasa2157cf2016-08-16 21:09:14 +0200904 dp_table = hash_get (lcm->bd_id_by_vni, vni);
Florin Coras577c3552016-04-21 00:45:40 +0200905
Filip Tehlaref2a5bf2017-05-30 07:14:46 +0200906 if (!dp_table && GID_ADDR_NSH != type)
Florin Coras577c3552016-04-21 00:45:40 +0200907 {
Florin Corasa2157cf2016-08-16 21:09:14 +0200908 clib_warning ("vni %d not associated to a %s!", vni,
909 GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
Florin Coras577c3552016-04-21 00:45:40 +0200910 return VNET_API_ERROR_INVALID_VALUE;
911 }
912
Florin Corasf727db92016-06-23 15:01:58 +0200913 /* store/remove mapping from map-cache */
914 return vnet_lisp_map_cache_add_del (a, map_index_result);
Florin Coras577c3552016-04-21 00:45:40 +0200915}
916
Filip Tehlard5a65db2017-05-17 17:21:10 +0200917static void
918add_l2_arp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
919{
920 u32 **ht = arg;
Filip Tehlar05879992017-09-05 15:46:09 +0200921 u32 version = (u32) kvp->key[0];
922 if (IP6 == version)
923 return;
924
925 u32 bd = (u32) (kvp->key[0] >> 32);
Filip Tehlard5a65db2017-05-17 17:21:10 +0200926 hash_set (ht[0], bd, 0);
927}
928
929u32 *
930vnet_lisp_l2_arp_bds_get (void)
931{
932 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
933 u32 *bds = 0;
934
Filip Tehlar05879992017-09-05 15:46:09 +0200935 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
936 add_l2_arp_bd, &bds);
937 return bds;
938}
939
940static void
941add_ndp_bd (BVT (clib_bihash_kv) * kvp, void *arg)
942{
943 u32 **ht = arg;
944 u32 version = (u32) kvp->key[0];
945 if (IP4 == version)
946 return;
947
948 u32 bd = (u32) (kvp->key[0] >> 32);
949 hash_set (ht[0], bd, 0);
950}
951
952u32 *
953vnet_lisp_ndp_bds_get (void)
954{
955 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
956 u32 *bds = 0;
957
958 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
959 add_ndp_bd, &bds);
Filip Tehlard5a65db2017-05-17 17:21:10 +0200960 return bds;
961}
962
963typedef struct
964{
965 void *vector;
966 u32 bd;
Filip Tehlar05879992017-09-05 15:46:09 +0200967} lisp_add_l2_arp_ndp_args_t;
Filip Tehlard5a65db2017-05-17 17:21:10 +0200968
969static void
970add_l2_arp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
971{
Filip Tehlar05879992017-09-05 15:46:09 +0200972 lisp_add_l2_arp_ndp_args_t *a = arg;
Filip Tehlard5a65db2017-05-17 17:21:10 +0200973 lisp_api_l2_arp_entry_t **vector = a->vector, e;
974
Filip Tehlar05879992017-09-05 15:46:09 +0200975 u32 version = (u32) kvp->key[0];
976 if (IP6 == version)
977 return;
978
979 u32 bd = (u32) (kvp->key[0] >> 32);
980
981 if (bd == a->bd)
Filip Tehlard5a65db2017-05-17 17:21:10 +0200982 {
983 mac_copy (e.mac, (void *) &kvp->value);
984 e.ip4 = (u32) kvp->key[1];
985 vec_add1 (vector[0], e);
986 }
987}
988
989lisp_api_l2_arp_entry_t *
990vnet_lisp_l2_arp_entries_get_by_bd (u32 bd)
991{
992 lisp_api_l2_arp_entry_t *entries = 0;
993 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar05879992017-09-05 15:46:09 +0200994 lisp_add_l2_arp_ndp_args_t a;
Filip Tehlard5a65db2017-05-17 17:21:10 +0200995
996 a.vector = &entries;
997 a.bd = bd;
998
Filip Tehlar05879992017-09-05 15:46:09 +0200999 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
1000 add_l2_arp_entry, &a);
1001 return entries;
1002}
1003
1004static void
1005add_ndp_entry (BVT (clib_bihash_kv) * kvp, void *arg)
1006{
1007 lisp_add_l2_arp_ndp_args_t *a = arg;
1008 lisp_api_ndp_entry_t **vector = a->vector, e;
1009
1010 u32 version = (u32) kvp->key[0];
1011 if (IP4 == version)
1012 return;
1013
1014 u32 bd = (u32) (kvp->key[0] >> 32);
1015
1016 if (bd == a->bd)
1017 {
1018 mac_copy (e.mac, (void *) &kvp->value);
1019 clib_memcpy (e.ip6, &kvp->key[1], 16);
1020 vec_add1 (vector[0], e);
1021 }
1022}
1023
1024lisp_api_ndp_entry_t *
1025vnet_lisp_ndp_entries_get_by_bd (u32 bd)
1026{
1027 lisp_api_ndp_entry_t *entries = 0;
1028 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1029 lisp_add_l2_arp_ndp_args_t a;
1030
1031 a.vector = &entries;
1032 a.bd = bd;
1033
1034 gid_dict_foreach_l2_arp_ndp_entry (&lcm->mapping_index_by_gid,
1035 add_ndp_entry, &a);
Filip Tehlard5a65db2017-05-17 17:21:10 +02001036 return entries;
1037}
1038
1039int
Filip Tehlar64929642017-09-20 08:41:23 +02001040vnet_lisp_add_del_l2_arp_ndp_entry (gid_address_t * key, u8 * mac, u8 is_add)
Filip Tehlard5a65db2017-05-17 17:21:10 +02001041{
1042 if (vnet_lisp_enable_disable_status () == 0)
1043 {
1044 clib_warning ("LISP is disabled!");
1045 return VNET_API_ERROR_LISP_DISABLED;
1046 }
1047
1048 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1049 int rc = 0;
1050
1051 u64 res = gid_dictionary_lookup (&lcm->mapping_index_by_gid, key);
1052 if (is_add)
1053 {
1054 if (res != GID_LOOKUP_MISS_L2)
1055 {
1056 clib_warning ("Entry %U exists in DB!", format_gid_address, key);
1057 return VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
1058 }
1059 u64 val = mac_to_u64 (mac);
1060 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, val,
1061 1 /* is_add */ );
1062 }
1063 else
1064 {
1065 if (res == GID_LOOKUP_MISS_L2)
1066 {
Filip Tehlar64929642017-09-20 08:41:23 +02001067 clib_warning ("ONE entry %U not found - cannot delete!",
Filip Tehlard5a65db2017-05-17 17:21:10 +02001068 format_gid_address, key);
1069 return -1;
1070 }
1071 gid_dictionary_add_del (&lcm->mapping_index_by_gid, key, 0,
1072 0 /* is_add */ );
1073 }
1074
1075 return rc;
1076}
1077
Filip Tehlar324112f2016-06-02 16:07:38 +02001078int
Florin Coras1a1adc72016-07-22 01:45:30 +02001079vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
Filip Tehlar324112f2016-06-02 16:07:38 +02001080{
Florin Corasa2157cf2016-08-16 21:09:14 +02001081 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1082 uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
Filip Tehlar324112f2016-06-02 16:07:38 +02001083
1084 if (vnet_lisp_enable_disable_status () == 0)
1085 {
1086 clib_warning ("LISP is disabled!");
Filip Tehlard5a65db2017-05-17 17:21:10 +02001087 return VNET_API_ERROR_LISP_DISABLED;
Filip Tehlar324112f2016-06-02 16:07:38 +02001088 }
1089
Florin Coras1a1adc72016-07-22 01:45:30 +02001090 dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
1091 vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
1092
1093 if (!is_l2 && (vni == 0 || dp_id == 0))
Filip Tehlar324112f2016-06-02 16:07:38 +02001094 {
1095 clib_warning ("can't add/del default vni-vrf mapping!");
1096 return -1;
1097 }
1098
Florin Coras1a1adc72016-07-22 01:45:30 +02001099 dp_idp = hash_get (dp_table_by_vni[0], vni);
1100 vnip = hash_get (vni_by_dp_table[0], dp_id);
Filip Tehlar324112f2016-06-02 16:07:38 +02001101
1102 if (is_add)
1103 {
Florin Coras1a1adc72016-07-22 01:45:30 +02001104 if (dp_idp || vnip)
Florin Corasa2157cf2016-08-16 21:09:14 +02001105 {
1106 clib_warning ("vni %d or vrf %d already used in vrf/vni "
1107 "mapping!", vni, dp_id);
1108 return -1;
1109 }
Florin Coras1a1adc72016-07-22 01:45:30 +02001110 hash_set (dp_table_by_vni[0], vni, dp_id);
1111 hash_set (vni_by_dp_table[0], dp_id, vni);
Florin Corasf727db92016-06-23 15:01:58 +02001112
1113 /* create dp iface */
Filip Tehlar0a8840d2017-10-16 05:48:23 -07001114 dp_add_del_iface (lcm, vni, is_l2, 1 /* is_add */ ,
1115 1 /* with_default_route */ );
Filip Tehlar324112f2016-06-02 16:07:38 +02001116 }
1117 else
1118 {
Florin Coras1a1adc72016-07-22 01:45:30 +02001119 if (!dp_idp || !vnip)
Florin Corasa2157cf2016-08-16 21:09:14 +02001120 {
1121 clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
1122 "mapping!", vni, dp_id);
1123 return -1;
1124 }
Florin Corasf727db92016-06-23 15:01:58 +02001125 /* remove dp iface */
Filip Tehlar0a8840d2017-10-16 05:48:23 -07001126 dp_add_del_iface (lcm, vni, is_l2, 0 /* is_add */ , 0 /* unused */ );
Filip Tehlarfc568412017-04-05 10:06:03 +02001127
1128 hash_unset (dp_table_by_vni[0], vni);
1129 hash_unset (vni_by_dp_table[0], dp_id);
Filip Tehlar324112f2016-06-02 16:07:38 +02001130 }
1131 return 0;
Florin Coras1a1adc72016-07-22 01:45:30 +02001132
Filip Tehlar324112f2016-06-02 16:07:38 +02001133}
1134
Florin Corasf727db92016-06-23 15:01:58 +02001135/* return 0 if the two locator sets are identical 1 otherwise */
1136static u8
Florin Corasa2157cf2016-08-16 21:09:14 +02001137compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
1138 locator_t * new_locators)
Filip Tehlar53f09e32016-05-19 14:25:44 +02001139{
Florin Corasf727db92016-06-23 15:01:58 +02001140 u32 i, old_li;
Florin Corasa2157cf2016-08-16 21:09:14 +02001141 locator_t *old_loc, *new_loc;
Filip Tehlar53f09e32016-05-19 14:25:44 +02001142
Florin Corasa2157cf2016-08-16 21:09:14 +02001143 if (vec_len (old_ls_indexes) != vec_len (new_locators))
Florin Corasf727db92016-06-23 15:01:58 +02001144 return 1;
Filip Tehlar53f09e32016-05-19 14:25:44 +02001145
Florin Corasa2157cf2016-08-16 21:09:14 +02001146 for (i = 0; i < vec_len (new_locators); i++)
Filip Tehlar53f09e32016-05-19 14:25:44 +02001147 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001148 old_li = vec_elt (old_ls_indexes, i);
1149 old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
Florin Corasf727db92016-06-23 15:01:58 +02001150
Florin Corasa2157cf2016-08-16 21:09:14 +02001151 new_loc = vec_elt_at_index (new_locators, i);
Florin Corasf727db92016-06-23 15:01:58 +02001152
1153 if (locator_cmp (old_loc, new_loc))
Florin Corasa2157cf2016-08-16 21:09:14 +02001154 return 1;
Filip Tehlar53f09e32016-05-19 14:25:44 +02001155 }
Florin Corasf727db92016-06-23 15:01:58 +02001156 return 0;
Filip Tehlar53f09e32016-05-19 14:25:44 +02001157}
1158
Filip Tehlard5fcc462016-10-17 16:20:18 +02001159typedef struct
1160{
1161 u8 is_negative;
1162 void *lcm;
1163 gid_address_t *eids_to_be_deleted;
1164} remove_mapping_args_t;
1165
1166/**
1167 * Callback invoked when a sub-prefix is found
1168 */
1169static void
1170remove_mapping_if_needed (u32 mi, void *arg)
1171{
1172 u8 delete = 0;
1173 remove_mapping_args_t *a = arg;
1174 lisp_cp_main_t *lcm = a->lcm;
1175 mapping_t *m;
1176 locator_set_t *ls;
1177
1178 m = pool_elt_at_index (lcm->mapping_pool, mi);
1179 if (!m)
1180 return;
1181
1182 ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
1183
1184 if (a->is_negative)
1185 {
1186 if (0 != vec_len (ls->locator_indices))
1187 delete = 1;
1188 }
1189 else
1190 {
1191 if (0 == vec_len (ls->locator_indices))
1192 delete = 1;
1193 }
1194
1195 if (delete)
1196 vec_add1 (a->eids_to_be_deleted, m->eid);
1197}
1198
1199/**
1200 * This function searches map cache and looks for IP prefixes that are subset
1201 * of the provided one. If such prefix is found depending on 'is_negative'
1202 * it does follows:
1203 *
1204 * 1) if is_negative is true and found prefix points to positive mapping,
1205 * then the mapping is removed
1206 * 2) if is_negative is false and found prefix points to negative mapping,
1207 * then the mapping is removed
1208 */
1209static void
1210remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
1211 u8 is_negative)
1212{
1213 gid_address_t *e;
1214 remove_mapping_args_t a;
Florin Corasf3dc11a2017-01-24 03:13:43 -08001215
Filip Tehlard5fcc462016-10-17 16:20:18 +02001216 memset (&a, 0, sizeof (a));
1217
1218 /* do this only in src/dst mode ... */
1219 if (MR_MODE_SRC_DST != lcm->map_request_mode)
1220 return;
1221
1222 /* ... and only for IP prefix */
1223 if (GID_ADDR_SRC_DST != gid_address_type (eid)
1224 || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
1225 return;
1226
1227 a.is_negative = is_negative;
1228 a.lcm = lcm;
1229
1230 gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
1231 remove_mapping_if_needed, &a);
1232
1233 vec_foreach (e, a.eids_to_be_deleted)
Filip Tehlarfb9931f2016-12-09 13:52:38 +01001234 {
Florin Corasf3dc11a2017-01-24 03:13:43 -08001235 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
1236
1237 memset (adj_args, 0, sizeof (adj_args[0]));
1238 gid_address_copy (&adj_args->reid, e);
1239 adj_args->is_add = 0;
1240 if (vnet_lisp_add_del_adjacency (adj_args))
1241 clib_warning ("failed to del adjacency!");
1242
Filip Tehlar809bc742017-08-14 19:15:36 +02001243 vnet_lisp_del_mapping (e, NULL);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01001244 }
Filip Tehlard5fcc462016-10-17 16:20:18 +02001245
1246 vec_free (a.eids_to_be_deleted);
1247}
1248
Filip Tehlar9677a942016-11-28 10:23:31 +01001249static void
1250mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi)
1251{
1252 timing_wheel_delete (&lcm->wheel, mi);
1253}
1254
Filip Tehlara6bce492017-02-03 10:17:49 +01001255static int
1256is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
1257{
1258 fib_node_index_t fei;
1259 fib_prefix_t prefix;
1260 fib_entry_flag_t flags;
1261
1262 ip_address_to_fib_prefix (addr, &prefix);
1263
1264 fei = fib_table_lookup (0, &prefix);
1265 flags = fib_entry_get_flags (fei);
1266 return (FIB_ENTRY_FLAG_LOCAL & flags);
1267}
1268
Filip Tehlar195bcee2016-05-13 17:37:35 +02001269/**
Filip Tehlar809bc742017-08-14 19:15:36 +02001270 * Adds/updates mapping. Does not program forwarding.
Filip Tehlar195bcee2016-05-13 17:37:35 +02001271 *
Filip Tehlar809bc742017-08-14 19:15:36 +02001272 * @param a parameters of the new mapping
Filip Tehlar195bcee2016-05-13 17:37:35 +02001273 * @param rlocs vector of remote locators
Filip Tehlar809bc742017-08-14 19:15:36 +02001274 * @param res_map_index index of the newly created mapping
1275 * @param locators_changed indicator if locators were updated in the mapping
Filip Tehlar195bcee2016-05-13 17:37:35 +02001276 * @return return code
1277 */
1278int
Filip Tehlar809bc742017-08-14 19:15:36 +02001279vnet_lisp_add_mapping (vnet_lisp_add_del_mapping_args_t * a,
1280 locator_t * rlocs,
1281 u32 * res_map_index, u8 * is_updated)
Filip Tehlar195bcee2016-05-13 17:37:35 +02001282{
Florin Corasa2157cf2016-08-16 21:09:14 +02001283 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1284 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Florin Corasf727db92016-06-23 15:01:58 +02001285 u32 mi, ls_index = 0, dst_map_index;
Florin Corasa2157cf2016-08-16 21:09:14 +02001286 mapping_t *old_map;
Filip Tehlara6bce492017-02-03 10:17:49 +01001287 locator_t *loc;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001288
Florin Corasa2157cf2016-08-16 21:09:14 +02001289 if (vnet_lisp_enable_disable_status () == 0)
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001290 {
1291 clib_warning ("LISP is disabled!");
1292 return VNET_API_ERROR_LISP_DISABLED;
1293 }
1294
Florin Corasf727db92016-06-23 15:01:58 +02001295 if (res_map_index)
1296 res_map_index[0] = ~0;
Filip Tehlar809bc742017-08-14 19:15:36 +02001297 if (is_updated)
1298 is_updated[0] = 0;
Filip Tehlar58f886a2016-05-30 15:57:40 +02001299
Florin Corasf727db92016-06-23 15:01:58 +02001300 memset (ls_args, 0, sizeof (ls_args[0]));
Filip Tehlar195bcee2016-05-13 17:37:35 +02001301
Florin Corasf727db92016-06-23 15:01:58 +02001302 ls_args->locators = rlocs;
Filip Tehlar809bc742017-08-14 19:15:36 +02001303 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
1304 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
1305
Paul Vinciguerrabdc0e6b2018-09-22 05:32:50 -07001306 /* check if none of the locators match locally configured address */
Filip Tehlar809bc742017-08-14 19:15:36 +02001307 vec_foreach (loc, rlocs)
1308 {
1309 ip_prefix_t *p = &gid_address_ippref (&loc->address);
1310 if (is_local_ip (lcm, &ip_prefix_addr (p)))
1311 {
1312 clib_warning ("RLOC %U matches a local address!",
1313 format_gid_address, &loc->address);
1314 return VNET_API_ERROR_LISP_RLOC_LOCAL;
1315 }
1316 }
1317
1318 /* overwrite: if mapping already exists, decide if locators should be
1319 * updated and be done */
1320 if (old_map && gid_address_cmp (&old_map->eid, &a->eid) == 0)
1321 {
1322 if (!a->is_static && (old_map->is_static || old_map->local))
1323 {
1324 /* do not overwrite local or static remote mappings */
1325 clib_warning ("mapping %U rejected due to collision with local "
1326 "or static remote mapping!", format_gid_address,
1327 &a->eid);
1328 return 0;
1329 }
1330
1331 locator_set_t *old_ls;
1332
1333 /* update mapping attributes */
1334 old_map->action = a->action;
1335 if (old_map->action != a->action && NULL != is_updated)
1336 is_updated[0] = 1;
1337
1338 old_map->authoritative = a->authoritative;
1339 old_map->ttl = a->ttl;
1340
1341 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1342 old_map->locator_set_index);
1343 if (compare_locators (lcm, old_ls->locator_indices, ls_args->locators))
1344 {
1345 /* set locator-set index to overwrite */
1346 ls_args->is_add = 1;
1347 ls_args->index = old_map->locator_set_index;
1348 vnet_lisp_add_del_locator_set (ls_args, 0);
1349 if (is_updated)
1350 is_updated[0] = 1;
1351 }
1352 if (res_map_index)
1353 res_map_index[0] = mi;
1354 }
1355 /* new mapping */
1356 else
1357 {
Filip Tehlar8d7a0b92017-10-18 07:10:25 -07001358 if (is_updated)
1359 is_updated[0] = 1;
Filip Tehlar809bc742017-08-14 19:15:36 +02001360 remove_overlapping_sub_prefixes (lcm, &a->eid, 0 == ls_args->locators);
1361
1362 ls_args->is_add = 1;
1363 ls_args->index = ~0;
1364
1365 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1366
1367 /* add mapping */
1368 a->is_add = 1;
1369 a->locator_set_index = ls_index;
1370 vnet_lisp_map_cache_add_del (a, &dst_map_index);
1371
1372 if (res_map_index)
1373 res_map_index[0] = dst_map_index;
1374 }
1375
1376 /* success */
1377 return 0;
1378}
1379
1380/**
1381 * Removes a mapping. Does not program forwarding.
1382 *
Paul Vinciguerrabdc0e6b2018-09-22 05:32:50 -07001383 * @param eid end-host identifier
Filip Tehlar809bc742017-08-14 19:15:36 +02001384 * @param res_map_index index of the removed mapping
1385 * @return return code
1386 */
1387int
1388vnet_lisp_del_mapping (gid_address_t * eid, u32 * res_map_index)
1389{
1390 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1391 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1392 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1393 mapping_t *old_map;
1394 u32 mi;
1395
Dave Barach59b25652017-09-10 15:04:27 -04001396 memset (ls_args, 0, sizeof (ls_args[0]));
Filip Tehlar809bc742017-08-14 19:15:36 +02001397 memset (m_args, 0, sizeof (m_args[0]));
1398 if (res_map_index)
1399 res_map_index[0] = ~0;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001400
Florin Coras71893ac2016-07-10 20:09:32 +02001401 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
Florin Corasa2157cf2016-08-16 21:09:14 +02001402 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
Florin Corasf727db92016-06-23 15:01:58 +02001403
Filip Tehlar809bc742017-08-14 19:15:36 +02001404 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
Filip Tehlar195bcee2016-05-13 17:37:35 +02001405 {
Filip Tehlar809bc742017-08-14 19:15:36 +02001406 clib_warning ("cannot delete mapping for eid %U",
1407 format_gid_address, eid);
1408 return -1;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001409 }
Florin Corasf727db92016-06-23 15:01:58 +02001410
Filip Tehlar809bc742017-08-14 19:15:36 +02001411 m_args->is_add = 0;
1412 gid_address_copy (&m_args->eid, eid);
1413 m_args->locator_set_index = old_map->locator_set_index;
Florin Corasf727db92016-06-23 15:01:58 +02001414
Filip Tehlar809bc742017-08-14 19:15:36 +02001415 /* delete mapping associated from map-cache */
1416 vnet_lisp_map_cache_add_del (m_args, 0);
Florin Corasf727db92016-06-23 15:01:58 +02001417
Filip Tehlar809bc742017-08-14 19:15:36 +02001418 ls_args->is_add = 0;
1419 ls_args->index = old_map->locator_set_index;
Filip Tehlarb93222f2016-07-07 09:58:08 +02001420
Filip Tehlar809bc742017-08-14 19:15:36 +02001421 /* delete locator set */
1422 vnet_lisp_add_del_locator_set (ls_args, 0);
Filip Tehlar9677a942016-11-28 10:23:31 +01001423
Filip Tehlar809bc742017-08-14 19:15:36 +02001424 /* delete timer associated to the mapping if any */
1425 if (old_map->timer_set)
1426 mapping_delete_timer (lcm, mi);
1427
1428 /* return old mapping index */
1429 if (res_map_index)
1430 res_map_index[0] = mi;
Florin Corasf727db92016-06-23 15:01:58 +02001431
Filip Tehlar195bcee2016-05-13 17:37:35 +02001432 /* success */
Florin Corasf727db92016-06-23 15:01:58 +02001433 return 0;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001434}
1435
Filip Tehlar58f886a2016-05-30 15:57:40 +02001436int
Florin Corasf727db92016-06-23 15:01:58 +02001437vnet_lisp_clear_all_remote_adjacencies (void)
Filip Tehlar58f886a2016-05-30 15:57:40 +02001438{
1439 int rv = 0;
Florin Corasa2157cf2016-08-16 21:09:14 +02001440 u32 mi, *map_indices = 0, *map_indexp;
1441 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1442 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1443 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
Filip Tehlar58f886a2016-05-30 15:57:40 +02001444
Florin Corasa2157cf2016-08-16 21:09:14 +02001445 /* *INDENT-OFF* */
Filip Tehlar58f886a2016-05-30 15:57:40 +02001446 pool_foreach_index (mi, lcm->mapping_pool,
Florin Corasa2157cf2016-08-16 21:09:14 +02001447 ({
1448 vec_add1 (map_indices, mi);
1449 }));
1450 /* *INDENT-ON* */
Filip Tehlar58f886a2016-05-30 15:57:40 +02001451
1452 vec_foreach (map_indexp, map_indices)
Florin Corasa2157cf2016-08-16 21:09:14 +02001453 {
1454 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1455 if (!map->local)
1456 {
Alberto Rodriguez-Natal8d66f9d2017-09-09 14:15:15 -07001457 dp_del_fwd_entry (lcm, map_indexp[0]);
Filip Tehlar58f886a2016-05-30 15:57:40 +02001458
Florin Corasa2157cf2016-08-16 21:09:14 +02001459 dm_args->is_add = 0;
1460 gid_address_copy (&dm_args->eid, &map->eid);
1461 dm_args->locator_set_index = map->locator_set_index;
Filip Tehlar58f886a2016-05-30 15:57:40 +02001462
Florin Corasa2157cf2016-08-16 21:09:14 +02001463 /* delete mapping associated to fwd entry */
1464 vnet_lisp_map_cache_add_del (dm_args, 0);
Filip Tehlar58f886a2016-05-30 15:57:40 +02001465
Florin Corasa2157cf2016-08-16 21:09:14 +02001466 ls->is_add = 0;
1467 ls->local = 0;
1468 ls->index = map->locator_set_index;
1469 /* delete locator set */
1470 rv = vnet_lisp_add_del_locator_set (ls, 0);
1471 if (rv != 0)
1472 goto cleanup;
1473 }
1474 }
Filip Tehlar58f886a2016-05-30 15:57:40 +02001475
1476cleanup:
1477 if (map_indices)
1478 vec_free (map_indices);
1479 return rv;
1480}
1481
Filip Tehlar195bcee2016-05-13 17:37:35 +02001482/**
Florin Coras71893ac2016-07-10 20:09:32 +02001483 * Adds adjacency or removes forwarding entry associated to remote mapping.
1484 * Note that adjacencies are not stored, they only result in forwarding entries
1485 * being created.
Florin Corasf727db92016-06-23 15:01:58 +02001486 */
Florin Corasf3dc11a2017-01-24 03:13:43 -08001487int
1488vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
Florin Corasf727db92016-06-23 15:01:58 +02001489{
Florin Corasf3dc11a2017-01-24 03:13:43 -08001490 lisp_cp_main_t *lcm = &lisp_control_main;
Florin Coras71893ac2016-07-10 20:09:32 +02001491 u32 local_mi, remote_mi = ~0;
Florin Corasf727db92016-06-23 15:01:58 +02001492
1493 if (vnet_lisp_enable_disable_status () == 0)
1494 {
1495 clib_warning ("LISP is disabled!");
1496 return VNET_API_ERROR_LISP_DISABLED;
1497 }
1498
Filip Tehlar69a9b762016-09-23 10:00:52 +02001499 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
Florin Corasf3dc11a2017-01-24 03:13:43 -08001500 &a->reid, &a->leid);
Florin Coras71893ac2016-07-10 20:09:32 +02001501 if (GID_LOOKUP_MISS == remote_mi)
1502 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001503 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
Florin Corasf3dc11a2017-01-24 03:13:43 -08001504 format_gid_address, &a->reid);
Florin Corasf727db92016-06-23 15:01:58 +02001505
Florin Coras71893ac2016-07-10 20:09:32 +02001506 return -1;
1507 }
1508
Florin Corasf3dc11a2017-01-24 03:13:43 -08001509 if (a->is_add)
Florin Corasf727db92016-06-23 15:01:58 +02001510 {
Florin Corasf727db92016-06-23 15:01:58 +02001511 /* check if source eid has an associated mapping. If pitr mode is on,
1512 * just use the pitr's mapping */
Filip Tehlar0a8840d2017-10-16 05:48:23 -07001513 if (lcm->flags & LISP_FLAG_PITR_MODE)
1514 {
1515 if (lcm->pitr_map_index != ~0)
1516 {
1517 local_mi = lcm->pitr_map_index;
1518 }
1519 else
1520 {
1521 /* PITR mode is on, but no mapping is configured */
1522 return -1;
1523 }
1524 }
Filip Tehlaref2a5bf2017-05-30 07:14:46 +02001525 else
1526 {
1527 if (gid_address_type (&a->reid) == GID_ADDR_NSH)
1528 {
1529 if (lcm->nsh_map_index == ~0)
1530 local_mi = GID_LOOKUP_MISS;
1531 else
1532 local_mi = lcm->nsh_map_index;
1533 }
1534 else
1535 {
1536 local_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
1537 &a->leid);
1538 }
1539 }
Florin Corasf727db92016-06-23 15:01:58 +02001540
Florin Coras71893ac2016-07-10 20:09:32 +02001541 if (GID_LOOKUP_MISS == local_mi)
Florin Corasa2157cf2016-08-16 21:09:14 +02001542 {
1543 clib_warning ("Local eid %U not found. Cannot add adjacency!",
Florin Corasf3dc11a2017-01-24 03:13:43 -08001544 format_gid_address, &a->leid);
Florin Corasf727db92016-06-23 15:01:58 +02001545
Florin Corasa2157cf2016-08-16 21:09:14 +02001546 return -1;
1547 }
Florin Corasf727db92016-06-23 15:01:58 +02001548
Florin Coras71893ac2016-07-10 20:09:32 +02001549 /* update forwarding */
1550 dp_add_fwd_entry (lcm, local_mi, remote_mi);
Florin Corasf727db92016-06-23 15:01:58 +02001551 }
1552 else
Alberto Rodriguez-Natal8d66f9d2017-09-09 14:15:15 -07001553 dp_del_fwd_entry (lcm, remote_mi);
Florin Corasf727db92016-06-23 15:01:58 +02001554
1555 return 0;
1556}
1557
1558int
Florin Corasdca88042016-09-14 16:01:38 +02001559vnet_lisp_set_map_request_mode (u8 mode)
1560{
1561 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1562
1563 if (vnet_lisp_enable_disable_status () == 0)
1564 {
1565 clib_warning ("LISP is disabled!");
1566 return VNET_API_ERROR_LISP_DISABLED;
1567 }
1568
1569 if (mode >= _MR_MODE_MAX)
1570 {
1571 clib_warning ("Invalid LISP map request mode %d!", mode);
1572 return VNET_API_ERROR_INVALID_ARGUMENT;
1573 }
1574
1575 lcm->map_request_mode = mode;
1576 return 0;
1577}
1578
Filip Tehlar53f09e32016-05-19 14:25:44 +02001579int
Filip Tehlaref2a5bf2017-05-30 07:14:46 +02001580vnet_lisp_nsh_set_locator_set (u8 * locator_set_name, u8 is_add)
1581{
1582 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1583 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
1584 u32 locator_set_index = ~0;
1585 mapping_t *m;
1586 uword *p;
1587
1588 if (vnet_lisp_enable_disable_status () == 0)
1589 {
1590 clib_warning ("LISP is disabled!");
1591 return VNET_API_ERROR_LISP_DISABLED;
1592 }
1593
1594 if (is_add)
1595 {
1596 if (lcm->nsh_map_index == (u32) ~ 0)
1597 {
1598 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1599 if (!p)
1600 {
1601 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1602 return -1;
1603 }
1604 locator_set_index = p[0];
1605
1606 pool_get (lcm->mapping_pool, m);
1607 memset (m, 0, sizeof *m);
1608 m->locator_set_index = locator_set_index;
1609 m->local = 1;
1610 m->nsh_set = 1;
1611 lcm->nsh_map_index = m - lcm->mapping_pool;
1612
1613 if (~0 == vnet_lisp_gpe_add_nsh_iface (lgm))
1614 return -1;
1615 }
1616 }
1617 else
1618 {
1619 if (lcm->nsh_map_index != (u32) ~ 0)
1620 {
1621 /* remove NSH mapping */
1622 pool_put_index (lcm->mapping_pool, lcm->nsh_map_index);
1623 lcm->nsh_map_index = ~0;
1624 vnet_lisp_gpe_del_nsh_iface (lgm);
1625 }
1626 }
1627 return 0;
1628}
1629
1630int
Filip Tehlar53f09e32016-05-19 14:25:44 +02001631vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1632{
Florin Corasa2157cf2016-08-16 21:09:14 +02001633 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar53f09e32016-05-19 14:25:44 +02001634 u32 locator_set_index = ~0;
Florin Corasa2157cf2016-08-16 21:09:14 +02001635 mapping_t *m;
1636 uword *p;
Filip Tehlar53f09e32016-05-19 14:25:44 +02001637
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001638 if (vnet_lisp_enable_disable_status () == 0)
1639 {
1640 clib_warning ("LISP is disabled!");
1641 return VNET_API_ERROR_LISP_DISABLED;
1642 }
1643
Filip Tehlar53f09e32016-05-19 14:25:44 +02001644 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1645 if (!p)
1646 {
1647 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1648 return -1;
1649 }
1650 locator_set_index = p[0];
1651
1652 if (is_add)
1653 {
1654 pool_get (lcm->mapping_pool, m);
1655 m->locator_set_index = locator_set_index;
1656 m->local = 1;
Filip Tehlar38206ee2017-02-20 17:31:57 +01001657 m->pitr_set = 1;
Filip Tehlar53f09e32016-05-19 14:25:44 +02001658 lcm->pitr_map_index = m - lcm->mapping_pool;
Filip Tehlar53f09e32016-05-19 14:25:44 +02001659 }
1660 else
1661 {
1662 /* remove pitr mapping */
1663 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
Filip Tehlar0a8840d2017-10-16 05:48:23 -07001664 lcm->pitr_map_index = ~0;
Filip Tehlar53f09e32016-05-19 14:25:44 +02001665 }
1666 return 0;
1667}
1668
Filip Tehlar7048ff12017-07-27 08:09:14 +02001669int
1670vnet_lisp_map_register_fallback_threshold_set (u32 value)
1671{
1672 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1673 if (0 == value)
1674 {
1675 return VNET_API_ERROR_INVALID_ARGUMENT;
1676 }
1677
1678 lcm->max_expired_map_registers = value;
1679 return 0;
1680}
1681
1682u32
1683vnet_lisp_map_register_fallback_threshold_get (void)
1684{
1685 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1686 return lcm->max_expired_map_registers;
1687}
1688
Florin Corasba888e42017-01-24 11:38:18 -08001689/**
1690 * Configure Proxy-ETR
1691 *
1692 * @param ip PETR's IP address
1693 * @param is_add Flag that indicates if this is an addition or removal
1694 *
1695 * return 0 on success
1696 */
1697int
1698vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1699{
1700 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1701 u32 ls_index = ~0;
1702 mapping_t *m;
1703 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1704 locator_t loc;
1705
1706 if (vnet_lisp_enable_disable_status () == 0)
1707 {
1708 clib_warning ("LISP is disabled!");
1709 return VNET_API_ERROR_LISP_DISABLED;
1710 }
1711
1712 memset (ls_args, 0, sizeof (*ls_args));
1713
1714 if (is_add)
1715 {
1716 /* Create dummy petr locator-set */
Florin Corasb69259a2017-03-09 14:39:54 -08001717 memset (&loc, 0, sizeof (loc));
Florin Corasba888e42017-01-24 11:38:18 -08001718 gid_address_from_ip (&loc.address, ip);
1719 loc.priority = 1;
1720 loc.state = loc.weight = 1;
Florin Coras2743cc42017-01-29 16:42:20 -08001721 loc.local = 0;
Florin Corasba888e42017-01-24 11:38:18 -08001722
1723 ls_args->is_add = 1;
1724 ls_args->index = ~0;
1725 vec_add1 (ls_args->locators, loc);
1726 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1727
1728 /* Add petr mapping */
1729 pool_get (lcm->mapping_pool, m);
1730 m->locator_set_index = ls_index;
1731 lcm->petr_map_index = m - lcm->mapping_pool;
1732
1733 /* Enable use-petr */
1734 lcm->flags |= LISP_FLAG_USE_PETR;
1735 }
1736 else
1737 {
1738 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1739
1740 /* Remove petr locator */
1741 ls_args->is_add = 0;
1742 ls_args->index = m->locator_set_index;
1743 vnet_lisp_add_del_locator_set (ls_args, 0);
1744
1745 /* Remove petr mapping */
1746 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1747
1748 /* Disable use-petr */
1749 lcm->flags &= ~LISP_FLAG_USE_PETR;
Filip Tehlar0a8840d2017-10-16 05:48:23 -07001750 lcm->petr_map_index = ~0;
Florin Corasba888e42017-01-24 11:38:18 -08001751 }
1752 return 0;
1753}
1754
Florin Corase127a7e2016-02-18 22:20:01 +01001755/* cleans locator to locator-set data and removes locators not part of
1756 * any locator-set */
1757static void
1758clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1759{
Filip Tehlard1c5cc32016-05-30 10:39:20 +02001760 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
Florin Corasa2157cf2016-08-16 21:09:14 +02001761 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1762 for (i = 0; i < vec_len (ls->locator_indices); i++)
Florin Corase127a7e2016-02-18 22:20:01 +01001763 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001764 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1765 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1766 loc_indexp[0]);
1767 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1768 {
1769 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1770 if (ls_indexp[0] == lsi)
1771 break;
1772 }
Florin Corase127a7e2016-02-18 22:20:01 +01001773
Florin Corasa2157cf2016-08-16 21:09:14 +02001774 /* delete index for removed locator-set */
1775 vec_del1 (ls_indexes[0], j);
Florin Corase127a7e2016-02-18 22:20:01 +01001776
1777 /* delete locator if it's part of no locator-set */
1778 if (vec_len (ls_indexes[0]) == 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02001779 {
1780 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1781 vec_add1 (to_be_deleted, i);
1782 }
Filip Tehlard1c5cc32016-05-30 10:39:20 +02001783 }
1784
1785 if (to_be_deleted)
1786 {
1787 for (i = 0; i < vec_len (to_be_deleted); i++)
Florin Corasa2157cf2016-08-16 21:09:14 +02001788 {
1789 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1790 vec_del1 (ls->locator_indices, loc_indexp[0]);
1791 }
Filip Tehlard1c5cc32016-05-30 10:39:20 +02001792 vec_free (to_be_deleted);
Florin Corase127a7e2016-02-18 22:20:01 +01001793 }
1794}
Filip Tehlard1c5cc32016-05-30 10:39:20 +02001795
Florin Corasf727db92016-06-23 15:01:58 +02001796static inline uword *
1797get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001798{
Florin Corasa2157cf2016-08-16 21:09:14 +02001799 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001800
Florin Corasa2157cf2016-08-16 21:09:14 +02001801 ASSERT (a != NULL);
1802 ASSERT (p != NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001803
1804 /* find locator-set */
1805 if (a->local)
1806 {
Dave Barach59b25652017-09-10 15:04:27 -04001807 ASSERT (a->name);
Florin Corasa2157cf2016-08-16 21:09:14 +02001808 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001809 }
1810 else
1811 {
1812 *p = a->index;
1813 }
1814
1815 return p;
1816}
1817
Florin Corasf727db92016-06-23 15:01:58 +02001818static inline int
1819is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
Florin Corasa2157cf2016-08-16 21:09:14 +02001820 locator_t * loc)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001821{
Florin Corasa2157cf2016-08-16 21:09:14 +02001822 locator_t *itloc;
1823 u32 *locit;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001824
Florin Corasa2157cf2016-08-16 21:09:14 +02001825 ASSERT (ls != NULL);
1826 ASSERT (loc != NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001827
Florin Corasa2157cf2016-08-16 21:09:14 +02001828 vec_foreach (locit, ls->locator_indices)
1829 {
1830 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1831 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1832 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1833 {
1834 clib_warning ("Duplicate locator");
1835 return VNET_API_ERROR_VALUE_EXIST;
1836 }
1837 }
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001838
1839 return 0;
1840}
1841
Filip Tehlar68d2e242017-04-21 12:05:58 +02001842static void
Filip Tehlar9d286a42017-10-26 23:57:09 -07001843update_adjacencies_by_map_index (lisp_cp_main_t * lcm,
Filip Tehlar68d2e242017-04-21 12:05:58 +02001844 u32 mapping_index, u8 remove_only)
1845{
1846 fwd_entry_t *fwd;
1847 mapping_t *map;
Filip Tehlar9d286a42017-10-26 23:57:09 -07001848 uword *fei = 0, *rmts_idxp = 0;
1849 u32 **rmts = 0, *remote_idxp = 0, *rmts_copy = 0;
Filip Tehlar68d2e242017-04-21 12:05:58 +02001850 vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
Filip Tehlar9d286a42017-10-26 23:57:09 -07001851 memset (a, 0, sizeof (*a));
Filip Tehlar68d2e242017-04-21 12:05:58 +02001852
1853 map = pool_elt_at_index (lcm->mapping_pool, mapping_index);
1854
Filip Tehlar9d286a42017-10-26 23:57:09 -07001855 if (map->local)
1856 {
1857 rmts_idxp = hash_get (lcm->lcl_to_rmt_adjs_by_lcl_idx, mapping_index);
1858 if (rmts_idxp)
1859 {
1860 rmts =
1861 pool_elt_at_index (lcm->lcl_to_rmt_adjacencies, rmts_idxp[0]);
1862 rmts_copy = vec_dup (rmts[0]);
Filip Tehlar68d2e242017-04-21 12:05:58 +02001863
Filip Tehlar9d286a42017-10-26 23:57:09 -07001864 vec_foreach (remote_idxp, rmts_copy)
1865 {
1866 fei = hash_get (lcm->fwd_entry_by_mapping_index, remote_idxp[0]);
1867 if (!fei)
1868 continue;
Filip Tehlar68d2e242017-04-21 12:05:58 +02001869
Filip Tehlar9d286a42017-10-26 23:57:09 -07001870 fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
1871 a->is_add = 0;
1872 gid_address_copy (&a->leid, &fwd->leid);
1873 gid_address_copy (&a->reid, &fwd->reid);
1874 vnet_lisp_add_del_adjacency (a);
1875
1876 if (!remove_only)
1877 {
1878 a->is_add = 1;
1879 vnet_lisp_add_del_adjacency (a);
1880 }
1881 }
1882 vec_free (rmts_copy);
1883 }
1884 }
1885 else
1886 {
1887 fei = hash_get (lcm->fwd_entry_by_mapping_index, mapping_index);
1888 if (!fei)
1889 return;
1890
1891 fwd = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
1892 a->is_add = 0;
1893 gid_address_copy (&a->leid, &fwd->leid);
1894 gid_address_copy (&a->reid, &fwd->reid);
1895 vnet_lisp_add_del_adjacency (a);
1896
1897 if (!remove_only)
1898 {
1899 a->is_add = 1;
1900 vnet_lisp_add_del_adjacency (a);
1901 }
1902 }
Filip Tehlar68d2e242017-04-21 12:05:58 +02001903}
1904
1905static void
Filip Tehlar9d286a42017-10-26 23:57:09 -07001906update_fwd_entries_by_locator_set (lisp_cp_main_t * lcm,
Filip Tehlar68d2e242017-04-21 12:05:58 +02001907 u32 ls_index, u8 remove_only)
1908{
1909 u32 i, *map_indexp;
1910 u32 **eid_indexes;
Filip Tehlarfacee282017-04-27 14:29:27 +02001911
1912 if (vec_len (lcm->locator_set_to_eids) <= ls_index)
1913 return;
1914
Filip Tehlar68d2e242017-04-21 12:05:58 +02001915 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, ls_index);
1916
1917 for (i = 0; i < vec_len (eid_indexes[0]); i++)
1918 {
1919 map_indexp = vec_elt_at_index (eid_indexes[0], i);
Filip Tehlar9d286a42017-10-26 23:57:09 -07001920 update_adjacencies_by_map_index (lcm, map_indexp[0], remove_only);
Filip Tehlar68d2e242017-04-21 12:05:58 +02001921 }
1922}
1923
Florin Corasf727db92016-06-23 15:01:58 +02001924static inline void
Florin Corasa2157cf2016-08-16 21:09:14 +02001925remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1926 u32 ls_index, u32 loc_id)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001927{
Florin Corasa2157cf2016-08-16 21:09:14 +02001928 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1929 u32 **ls_indexes = NULL;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001930
Florin Corasa2157cf2016-08-16 21:09:14 +02001931 ASSERT (ls != NULL);
1932 ASSERT (locit != NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001933
Florin Corasa2157cf2016-08-16 21:09:14 +02001934 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1935 pool_put_index (lcm->locator_pool, locit[0]);
1936 vec_del1 (ls->locator_indices, loc_id);
1937 vec_del1 (ls_indexes[0], ls_index);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001938}
1939
1940int
1941vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
Florin Corasa2157cf2016-08-16 21:09:14 +02001942 locator_set_t * ls, u32 * ls_result)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001943{
Florin Corasa2157cf2016-08-16 21:09:14 +02001944 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1945 locator_t *loc = NULL, *itloc = NULL;
1946 uword _p = (u32) ~ 0, *p = &_p;
1947 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001948 u32 loc_id = ~0;
1949 int ret = 0;
1950
Florin Corasa2157cf2016-08-16 21:09:14 +02001951 ASSERT (a != NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001952
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001953 if (vnet_lisp_enable_disable_status () == 0)
1954 {
1955 clib_warning ("LISP is disabled!");
1956 return VNET_API_ERROR_LISP_DISABLED;
1957 }
1958
Florin Corasa2157cf2016-08-16 21:09:14 +02001959 p = get_locator_set_index (a, p);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001960 if (!p)
1961 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001962 clib_warning ("locator-set %v doesn't exist", a->name);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001963 return VNET_API_ERROR_INVALID_ARGUMENT;
1964 }
1965
1966 if (ls == 0)
1967 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001968 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001969 if (!ls)
Florin Corasa2157cf2016-08-16 21:09:14 +02001970 {
1971 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1972 p[0]);
1973 return VNET_API_ERROR_INVALID_ARGUMENT;
1974 }
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001975 }
1976
1977 if (a->is_add)
1978 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001979 if (ls_result)
1980 ls_result[0] = p[0];
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001981
Florin Corasa2157cf2016-08-16 21:09:14 +02001982 /* allocate locators */
1983 vec_foreach (itloc, a->locators)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001984 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001985 ret = is_locator_in_locator_set (lcm, ls, itloc);
1986 if (0 != ret)
1987 {
1988 return ret;
1989 }
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001990
Florin Corasa2157cf2016-08-16 21:09:14 +02001991 pool_get (lcm->locator_pool, loc);
1992 loc[0] = itloc[0];
1993 loc_index = loc - lcm->locator_pool;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001994
Florin Corasa2157cf2016-08-16 21:09:14 +02001995 vec_add1 (ls->locator_indices, loc_index);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001996
Florin Corasa2157cf2016-08-16 21:09:14 +02001997 vec_validate (lcm->locator_to_locator_sets, loc_index);
1998 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1999 loc_index);
Filip Tehlarc5bb0d62016-09-02 12:14:31 +02002000 vec_add1 (ls_indexes[0], p[0]);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02002001 }
Florin Corasa2157cf2016-08-16 21:09:14 +02002002 }
2003 else
2004 {
2005 ls_index = p[0];
Filip Tehlar68d2e242017-04-21 12:05:58 +02002006 u8 removed;
Florin Corasa2157cf2016-08-16 21:09:14 +02002007
Filip Tehlar68d2e242017-04-21 12:05:58 +02002008 vec_foreach (itloc, a->locators)
Florin Corasa2157cf2016-08-16 21:09:14 +02002009 {
Filip Tehlar68d2e242017-04-21 12:05:58 +02002010 removed = 0;
2011 loc_id = 0;
2012 vec_foreach (locit, ls->locator_indices)
2013 {
2014 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
Florin Corasa2157cf2016-08-16 21:09:14 +02002015
Filip Tehlar68d2e242017-04-21 12:05:58 +02002016 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
2017 {
2018 removed = 1;
2019 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
2020 }
2021 if (0 == loc->local &&
2022 !gid_address_cmp (&loc->address, &itloc->address))
2023 {
2024 removed = 1;
2025 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
2026 }
Florin Corasa2157cf2016-08-16 21:09:14 +02002027
Filip Tehlar68d2e242017-04-21 12:05:58 +02002028 if (removed)
2029 {
2030 /* update fwd entries using this locator in DP */
Filip Tehlar9d286a42017-10-26 23:57:09 -07002031 update_fwd_entries_by_locator_set (lcm, ls_index,
Filip Tehlar68d2e242017-04-21 12:05:58 +02002032 vec_len (ls->locator_indices)
2033 == 0);
2034 }
2035
2036 loc_id++;
2037 }
Florin Corasa2157cf2016-08-16 21:09:14 +02002038 }
2039 }
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02002040
2041 return 0;
2042}
2043
Florin Corase127a7e2016-02-18 22:20:01 +01002044int
2045vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
Florin Corasa2157cf2016-08-16 21:09:14 +02002046 u32 * ls_result)
Florin Corase127a7e2016-02-18 22:20:01 +01002047{
Florin Corasa2157cf2016-08-16 21:09:14 +02002048 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2049 locator_set_t *ls;
2050 uword _p = (u32) ~ 0, *p = &_p;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02002051 u32 ls_index;
Florin Corasa2157cf2016-08-16 21:09:14 +02002052 u32 **eid_indexes;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02002053 int ret = 0;
Florin Corase127a7e2016-02-18 22:20:01 +01002054
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02002055 if (vnet_lisp_enable_disable_status () == 0)
2056 {
2057 clib_warning ("LISP is disabled!");
2058 return VNET_API_ERROR_LISP_DISABLED;
2059 }
2060
Florin Corase127a7e2016-02-18 22:20:01 +01002061 if (a->is_add)
2062 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002063 p = get_locator_set_index (a, p);
Florin Corase127a7e2016-02-18 22:20:01 +01002064
2065 /* overwrite */
Florin Corasa2157cf2016-08-16 21:09:14 +02002066 if (p && p[0] != (u32) ~ 0)
2067 {
2068 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
2069 if (!ls)
2070 {
2071 clib_warning ("locator-set %d to be overwritten doesn't exist!",
2072 p[0]);
2073 return -1;
2074 }
Florin Corase127a7e2016-02-18 22:20:01 +01002075
Florin Corasa2157cf2016-08-16 21:09:14 +02002076 /* clean locator to locator-set vectors and remove locators if
2077 * they're not part of another locator-set */
2078 clean_locator_to_locator_set (lcm, p[0]);
Florin Corase127a7e2016-02-18 22:20:01 +01002079
Florin Corasa2157cf2016-08-16 21:09:14 +02002080 /* remove locator indices from locator set */
2081 vec_free (ls->locator_indices);
Florin Corase127a7e2016-02-18 22:20:01 +01002082
Florin Corasa2157cf2016-08-16 21:09:14 +02002083 ls_index = p[0];
Florin Corase127a7e2016-02-18 22:20:01 +01002084
Florin Corasa2157cf2016-08-16 21:09:14 +02002085 if (ls_result)
2086 ls_result[0] = p[0];
2087 }
Florin Corase127a7e2016-02-18 22:20:01 +01002088 /* new locator-set */
2089 else
Florin Corasa2157cf2016-08-16 21:09:14 +02002090 {
2091 pool_get (lcm->locator_set_pool, ls);
2092 memset (ls, 0, sizeof (*ls));
2093 ls_index = ls - lcm->locator_set_pool;
Florin Corase127a7e2016-02-18 22:20:01 +01002094
Florin Corasa2157cf2016-08-16 21:09:14 +02002095 if (a->local)
2096 {
2097 ls->name = vec_dup (a->name);
Florin Corase127a7e2016-02-18 22:20:01 +01002098
Florin Corasa2157cf2016-08-16 21:09:14 +02002099 if (!lcm->locator_set_index_by_name)
2100 lcm->locator_set_index_by_name = hash_create_vec (
2101 /* size */
2102 0,
2103 sizeof
2104 (ls->name
2105 [0]),
2106 sizeof
2107 (uword));
2108 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
2109 ls_index);
Florin Corase127a7e2016-02-18 22:20:01 +01002110
Florin Corasa2157cf2016-08-16 21:09:14 +02002111 /* mark as local locator-set */
2112 vec_add1 (lcm->local_locator_set_indexes, ls_index);
2113 }
2114 ls->local = a->local;
2115 if (ls_result)
2116 ls_result[0] = ls_index;
2117 }
Florin Corase127a7e2016-02-18 22:20:01 +01002118
Florin Corasa2157cf2016-08-16 21:09:14 +02002119 ret = vnet_lisp_add_del_locator (a, ls, NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02002120 if (0 != ret)
Florin Corasa2157cf2016-08-16 21:09:14 +02002121 {
2122 return ret;
2123 }
Florin Corase127a7e2016-02-18 22:20:01 +01002124 }
2125 else
2126 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002127 p = get_locator_set_index (a, p);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02002128 if (!p)
Florin Corasa2157cf2016-08-16 21:09:14 +02002129 {
2130 clib_warning ("locator-set %v doesn't exists", a->name);
2131 return -1;
2132 }
Florin Corase127a7e2016-02-18 22:20:01 +01002133
Florin Corasa2157cf2016-08-16 21:09:14 +02002134 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
Florin Corase127a7e2016-02-18 22:20:01 +01002135 if (!ls)
Florin Corasa2157cf2016-08-16 21:09:14 +02002136 {
2137 clib_warning ("locator-set with index %d doesn't exists", p[0]);
2138 return -1;
2139 }
Florin Corase127a7e2016-02-18 22:20:01 +01002140
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002141 if (lcm->mreq_itr_rlocs == p[0])
Florin Corasa2157cf2016-08-16 21:09:14 +02002142 {
2143 clib_warning ("Can't delete the locator-set used to constrain "
2144 "the itr-rlocs in map-requests!");
2145 return -1;
2146 }
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002147
Florin Corasa2157cf2016-08-16 21:09:14 +02002148 if (vec_len (lcm->locator_set_to_eids) != 0)
2149 {
2150 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
2151 if (vec_len (eid_indexes[0]) != 0)
2152 {
2153 clib_warning
2154 ("Can't delete a locator that supports a mapping!");
2155 return -1;
2156 }
2157 }
Andrej Kozemcakb92feb62016-03-31 13:51:42 +02002158
2159 /* clean locator to locator-sets data */
2160 clean_locator_to_locator_set (lcm, p[0]);
2161
2162 if (ls->local)
Florin Corasa2157cf2016-08-16 21:09:14 +02002163 {
2164 u32 it, lsi;
Andrej Kozemcakb92feb62016-03-31 13:51:42 +02002165
Florin Corasa2157cf2016-08-16 21:09:14 +02002166 vec_foreach_index (it, lcm->local_locator_set_indexes)
2167 {
2168 lsi = vec_elt (lcm->local_locator_set_indexes, it);
2169 if (lsi == p[0])
2170 {
2171 vec_del1 (lcm->local_locator_set_indexes, it);
2172 break;
2173 }
2174 }
2175 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
2176 }
2177 vec_free (ls->name);
2178 vec_free (ls->locator_indices);
2179 pool_put (lcm->locator_set_pool, ls);
Andrej Kozemcakb92feb62016-03-31 13:51:42 +02002180 }
2181 return 0;
2182}
2183
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002184int
2185vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
2186{
2187 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2188
2189 lcm->rloc_probing = is_enable;
2190 return 0;
2191}
2192
2193int
2194vnet_lisp_map_register_enable_disable (u8 is_enable)
2195{
2196 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2197
2198 lcm->map_registering = is_enable;
2199 return 0;
2200}
2201
Filip Tehlar0a8840d2017-10-16 05:48:23 -07002202static void
2203lisp_cp_register_dst_port (vlib_main_t * vm)
2204{
2205 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
2206 lisp_cp_input_node.index, 1 /* is_ip4 */ );
2207 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
2208 lisp_cp_input_node.index, 0 /* is_ip4 */ );
2209}
2210
2211static void
2212lisp_cp_unregister_dst_port (vlib_main_t * vm)
2213{
2214 udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp, 0 /* is_ip4 */ );
2215 udp_unregister_dst_port (vm, UDP_DST_PORT_lisp_cp6, 1 /* is_ip4 */ );
2216}
2217
2218/**
2219 * lisp_cp_enable_l2_l3_ifaces
2220 *
2221 * Enable all l2 and l3 ifaces
2222 */
2223static void
2224lisp_cp_enable_l2_l3_ifaces (lisp_cp_main_t * lcm, u8 with_default_route)
2225{
2226 u32 vni, dp_table;
2227
2228 /* *INDENT-OFF* */
2229 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
2230 dp_add_del_iface(lcm, vni, /* is_l2 */ 0, /* is_add */1,
2231 with_default_route);
2232 }));
2233 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
2234 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1,
2235 with_default_route);
2236 }));
2237 /* *INDENT-ON* */
2238}
2239
2240static void
2241lisp_cp_disable_l2_l3_ifaces (lisp_cp_main_t * lcm)
2242{
2243 u32 **rmts;
2244
2245 /* clear interface table */
2246 hash_free (lcm->fwd_entry_by_mapping_index);
2247 pool_free (lcm->fwd_entry_pool);
2248 /* Clear state tracking rmt-lcl fwd entries */
2249 /* *INDENT-OFF* */
2250 pool_foreach(rmts, lcm->lcl_to_rmt_adjacencies,
2251 {
2252 vec_free(rmts[0]);
2253 });
2254 /* *INDENT-ON* */
2255 hash_free (lcm->lcl_to_rmt_adjs_by_lcl_idx);
2256 pool_free (lcm->lcl_to_rmt_adjacencies);
2257}
2258
Filip Tehlar46d4e362016-05-09 09:39:26 +02002259clib_error_t *
Florin Corasf727db92016-06-23 15:01:58 +02002260vnet_lisp_enable_disable (u8 is_enable)
Filip Tehlar46d4e362016-05-09 09:39:26 +02002261{
Florin Corasa2157cf2016-08-16 21:09:14 +02002262 clib_error_t *error = 0;
2263 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2264 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
Filip Tehlar46d4e362016-05-09 09:39:26 +02002265
Florin Corasf727db92016-06-23 15:01:58 +02002266 a->is_en = is_enable;
Filip Tehlar46d4e362016-05-09 09:39:26 +02002267 error = vnet_lisp_gpe_enable_disable (a);
2268 if (error)
2269 {
2270 return clib_error_return (0, "failed to %s data-plane!",
Florin Corasa2157cf2016-08-16 21:09:14 +02002271 a->is_en ? "enable" : "disable");
Filip Tehlar46d4e362016-05-09 09:39:26 +02002272 }
2273
Filip Tehlar0a8840d2017-10-16 05:48:23 -07002274 /* decide what to do based on mode */
Florin Corasa2157cf2016-08-16 21:09:14 +02002275
Filip Tehlar0a8840d2017-10-16 05:48:23 -07002276 if (lcm->flags & LISP_FLAG_XTR_MODE)
Filip Tehlar46d4e362016-05-09 09:39:26 +02002277 {
Filip Tehlar0a8840d2017-10-16 05:48:23 -07002278 if (is_enable)
2279 {
2280 lisp_cp_register_dst_port (lcm->vlib_main);
2281 lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
2282 }
2283 else
2284 {
2285 lisp_cp_unregister_dst_port (lcm->vlib_main);
2286 lisp_cp_disable_l2_l3_ifaces (lcm);
2287 }
2288 }
2289
2290 if (lcm->flags & LISP_FLAG_PETR_MODE)
2291 {
2292 /* if in xTR mode, the LISP ports were already (un)registered above */
2293 if (!(lcm->flags & LISP_FLAG_XTR_MODE))
2294 {
2295 if (is_enable)
2296 lisp_cp_register_dst_port (lcm->vlib_main);
2297 else
2298 lisp_cp_unregister_dst_port (lcm->vlib_main);
2299 }
2300 }
2301
2302 if (lcm->flags & LISP_FLAG_PITR_MODE)
2303 {
2304 if (is_enable)
2305 {
2306 /* install interfaces, but no default routes */
2307 lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
2308 }
2309 else
2310 {
2311 lisp_cp_disable_l2_l3_ifaces (lcm);
2312 }
Filip Tehlar46d4e362016-05-09 09:39:26 +02002313 }
2314
2315 /* update global flag */
Florin Corasf727db92016-06-23 15:01:58 +02002316 lcm->is_enabled = is_enable;
Filip Tehlar46d4e362016-05-09 09:39:26 +02002317
2318 return 0;
2319}
2320
Filip Tehlar46d4e362016-05-09 09:39:26 +02002321u8
2322vnet_lisp_enable_disable_status (void)
2323{
Florin Corasa2157cf2016-08-16 21:09:14 +02002324 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar46d4e362016-05-09 09:39:26 +02002325 return lcm->is_enabled;
2326}
2327
Florin Corase127a7e2016-02-18 22:20:01 +01002328int
2329vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
2330{
Florin Corasa2157cf2016-08-16 21:09:14 +02002331 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Florin Corase127a7e2016-02-18 22:20:01 +01002332 u32 i;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002333 lisp_msmr_t _mr, *mr = &_mr;
Florin Corase127a7e2016-02-18 22:20:01 +01002334
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02002335 if (vnet_lisp_enable_disable_status () == 0)
2336 {
2337 clib_warning ("LISP is disabled!");
2338 return VNET_API_ERROR_LISP_DISABLED;
2339 }
2340
Florin Corase127a7e2016-02-18 22:20:01 +01002341 if (a->is_add)
2342 {
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002343
2344 if (get_map_resolver (&a->address))
Florin Corasa2157cf2016-08-16 21:09:14 +02002345 {
2346 clib_warning ("map-resolver %U already exists!", format_ip_address,
2347 &a->address);
2348 return -1;
2349 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002350
2351 memset (mr, 0, sizeof (*mr));
Florin Corasa2157cf2016-08-16 21:09:14 +02002352 ip_address_copy (&mr->address, &a->address);
2353 vec_add1 (lcm->map_resolvers, *mr);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002354
2355 if (vec_len (lcm->map_resolvers) == 1)
Florin Corasa2157cf2016-08-16 21:09:14 +02002356 lcm->do_map_resolver_election = 1;
Florin Corase127a7e2016-02-18 22:20:01 +01002357 }
2358 else
2359 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002360 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
2361 {
2362 mr = vec_elt_at_index (lcm->map_resolvers, i);
2363 if (!ip_address_cmp (&mr->address, &a->address))
2364 {
2365 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
2366 lcm->do_map_resolver_election = 1;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002367
Florin Corasa2157cf2016-08-16 21:09:14 +02002368 vec_del1 (lcm->map_resolvers, i);
2369 break;
2370 }
2371 }
Florin Corase127a7e2016-02-18 22:20:01 +01002372 }
2373 return 0;
2374}
2375
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002376int
Filip Tehlar1e553a02017-08-02 12:45:07 +02002377vnet_lisp_map_register_set_ttl (u32 ttl)
2378{
2379 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2380 lcm->map_register_ttl = ttl;
2381 return 0;
2382}
2383
2384u32
2385vnet_lisp_map_register_get_ttl (void)
2386{
2387 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2388 return lcm->map_register_ttl;
2389}
2390
2391int
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002392vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
2393{
Florin Corasa2157cf2016-08-16 21:09:14 +02002394 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2395 uword *p = 0;
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002396
Florin Corasf727db92016-06-23 15:01:58 +02002397 if (vnet_lisp_enable_disable_status () == 0)
2398 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002399 clib_warning ("LISP is disabled!");
Florin Corasf727db92016-06-23 15:01:58 +02002400 return VNET_API_ERROR_LISP_DISABLED;
2401 }
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002402
2403 if (a->is_add)
2404 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002405 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002406 if (!p)
Florin Corasa2157cf2016-08-16 21:09:14 +02002407 {
2408 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
2409 return VNET_API_ERROR_INVALID_ARGUMENT;
2410 }
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002411
2412 lcm->mreq_itr_rlocs = p[0];
2413 }
2414 else
2415 {
2416 lcm->mreq_itr_rlocs = ~0;
2417 }
2418
2419 return 0;
2420}
2421
Florin Corase127a7e2016-02-18 22:20:01 +01002422/* Statistics (not really errors) */
2423#define foreach_lisp_cp_lookup_error \
2424_(DROP, "drop") \
Filip Tehlard5a65db2017-05-17 17:21:10 +02002425_(MAP_REQUESTS_SENT, "map-request sent") \
Filip Tehlar05879992017-09-05 15:46:09 +02002426_(ARP_REPLY_TX, "ARP replies sent") \
2427_(NDP_NEIGHBOR_ADVERTISEMENT_TX, \
2428 "neighbor advertisement sent")
Florin Corase127a7e2016-02-18 22:20:01 +01002429
Florin Corasa2157cf2016-08-16 21:09:14 +02002430static char *lisp_cp_lookup_error_strings[] = {
Florin Corase127a7e2016-02-18 22:20:01 +01002431#define _(sym,string) string,
2432 foreach_lisp_cp_lookup_error
2433#undef _
2434};
2435
2436typedef enum
2437{
2438#define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
Florin Corasa2157cf2016-08-16 21:09:14 +02002439 foreach_lisp_cp_lookup_error
Florin Corase127a7e2016-02-18 22:20:01 +01002440#undef _
2441 LISP_CP_LOOKUP_N_ERROR,
2442} lisp_cp_lookup_error_t;
2443
2444typedef enum
2445{
2446 LISP_CP_LOOKUP_NEXT_DROP,
Filip Tehlar05879992017-09-05 15:46:09 +02002447 LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX,
Florin Corase127a7e2016-02-18 22:20:01 +01002448 LISP_CP_LOOKUP_N_NEXT,
2449} lisp_cp_lookup_next_t;
2450
2451typedef struct
2452{
2453 gid_address_t dst_eid;
Andrej Kozemcak94e34762016-05-25 12:43:21 +02002454 ip_address_t map_resolver_ip;
Florin Corase127a7e2016-02-18 22:20:01 +01002455} lisp_cp_lookup_trace_t;
2456
2457u8 *
2458format_lisp_cp_lookup_trace (u8 * s, va_list * args)
2459{
2460 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2461 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
Florin Corasa2157cf2016-08-16 21:09:14 +02002462 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
Florin Corase127a7e2016-02-18 22:20:01 +01002463
2464 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
Florin Corasa2157cf2016-08-16 21:09:14 +02002465 format_ip_address, &t->map_resolver_ip, format_gid_address,
2466 &t->dst_eid);
Florin Corase127a7e2016-02-18 22:20:01 +01002467 return s;
2468}
2469
Florin Coras1c494842016-06-16 21:08:56 +02002470int
2471get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
Florin Corasa2157cf2016-08-16 21:09:14 +02002472 ip_address_t * sloc)
Florin Corasc2c90082016-06-13 18:37:15 +02002473{
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002474 lisp_msmr_t *mrit;
Florin Corasa2157cf2016-08-16 21:09:14 +02002475 ip_address_t *a;
Florin Corase127a7e2016-02-18 22:20:01 +01002476
Florin Corasa2157cf2016-08-16 21:09:14 +02002477 if (vec_len (lcm->map_resolvers) == 0)
Florin Corase127a7e2016-02-18 22:20:01 +01002478 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002479 clib_warning ("No map-resolver configured");
Florin Coras1c494842016-06-16 21:08:56 +02002480 return 0;
Florin Corase127a7e2016-02-18 22:20:01 +01002481 }
2482
Florin Corasddfafb82016-05-13 18:09:56 +02002483 /* find the first mr ip we have a route to and the ip of the
2484 * iface that has a route to it */
Florin Corasa2157cf2016-08-16 21:09:14 +02002485 vec_foreach (mrit, lcm->map_resolvers)
2486 {
2487 a = &mrit->address;
2488 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
2489 {
2490 ip_address_copy (mr_ip, a);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002491
Florin Corasa2157cf2016-08-16 21:09:14 +02002492 /* also update globals */
2493 return 1;
2494 }
2495 }
Florin Corasddfafb82016-05-13 18:09:56 +02002496
Florin Corasa2157cf2016-08-16 21:09:14 +02002497 clib_warning ("Can't find map-resolver and local interface ip!");
Florin Coras1c494842016-06-16 21:08:56 +02002498 return 0;
Florin Corasddfafb82016-05-13 18:09:56 +02002499}
Filip Tehlar254b0362016-04-07 10:04:34 +02002500
Filip Tehlarbeceab92016-04-20 17:21:55 +02002501static gid_address_t *
Filip Tehlar254b0362016-04-07 10:04:34 +02002502build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
2503{
Florin Corasa2157cf2016-08-16 21:09:14 +02002504 void *addr;
Filip Tehlar254b0362016-04-07 10:04:34 +02002505 u32 i;
Florin Corasa2157cf2016-08-16 21:09:14 +02002506 locator_t *loc;
2507 u32 *loc_indexp;
2508 ip_interface_address_t *ia = 0;
2509 gid_address_t gid_data, *gid = &gid_data;
2510 gid_address_t *rlocs = 0;
2511 ip_prefix_t *ippref = &gid_address_ippref (gid);
2512 ip_address_t *rloc = &ip_prefix_addr (ippref);
Filip Tehlar254b0362016-04-07 10:04:34 +02002513
Filip Tehlar324112f2016-06-02 16:07:38 +02002514 memset (gid, 0, sizeof (gid[0]));
Filip Tehlarbeceab92016-04-20 17:21:55 +02002515 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
Florin Corasa2157cf2016-08-16 21:09:14 +02002516 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
Filip Tehlar254b0362016-04-07 10:04:34 +02002517 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002518 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
Filip Tehlar254b0362016-04-07 10:04:34 +02002519 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
2520
Filip Tehlar254b0362016-04-07 10:04:34 +02002521 /* Add ipv4 locators first TODO sort them */
Florin Corasa2157cf2016-08-16 21:09:14 +02002522
2523 /* *INDENT-OFF* */
Filip Tehlar254b0362016-04-07 10:04:34 +02002524 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2525 loc->sw_if_index, 1 /* unnumbered */,
2526 ({
Florin Coras1c494842016-06-16 21:08:56 +02002527 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
2528 ip_address_set (rloc, addr, IP4);
Florin Corasddfafb82016-05-13 18:09:56 +02002529 ip_prefix_len (ippref) = 32;
Andrej Kozemcak438109d2016-07-22 12:54:12 +02002530 ip_prefix_normalize (ippref);
Filip Tehlarbeceab92016-04-20 17:21:55 +02002531 vec_add1 (rlocs, gid[0]);
Filip Tehlar254b0362016-04-07 10:04:34 +02002532 }));
2533
Filip Tehlar254b0362016-04-07 10:04:34 +02002534 /* Add ipv6 locators */
2535 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2536 loc->sw_if_index, 1 /* unnumbered */,
2537 ({
Florin Coras1c494842016-06-16 21:08:56 +02002538 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
2539 ip_address_set (rloc, addr, IP6);
Florin Corasddfafb82016-05-13 18:09:56 +02002540 ip_prefix_len (ippref) = 128;
Andrej Kozemcak438109d2016-07-22 12:54:12 +02002541 ip_prefix_normalize (ippref);
Filip Tehlarbeceab92016-04-20 17:21:55 +02002542 vec_add1 (rlocs, gid[0]);
Filip Tehlar254b0362016-04-07 10:04:34 +02002543 }));
Florin Corasa2157cf2016-08-16 21:09:14 +02002544 /* *INDENT-ON* */
2545
Filip Tehlar254b0362016-04-07 10:04:34 +02002546 }
2547 return rlocs;
2548}
2549
Florin Corase127a7e2016-02-18 22:20:01 +01002550static vlib_buffer_t *
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002551build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
2552 ip_address_t * sloc, ip_address_t * rloc,
2553 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
2554{
2555 vlib_buffer_t *b;
2556 u32 bi;
2557 vlib_main_t *vm = lcm->vlib_main;
2558
2559 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2560 {
2561 clib_warning ("Can't allocate buffer for Map-Request!");
2562 return 0;
2563 }
2564
2565 b = vlib_get_buffer (vm, bi);
2566
2567 /* leave some space for the encap headers */
2568 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2569
2570 /* put lisp msg */
2571 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2572 1 /* rloc probe */ , nonce_res);
2573
2574 /* push outer ip header */
2575 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
Florin Corasfdbc3822017-07-27 00:34:12 -07002576 rloc, 1);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002577
2578 bi_res[0] = bi;
2579
2580 return b;
2581}
2582
2583static vlib_buffer_t *
Florin Corasa2157cf2016-08-16 21:09:14 +02002584build_encapsulated_map_request (lisp_cp_main_t * lcm,
2585 gid_address_t * seid, gid_address_t * deid,
2586 locator_set_t * loc_set, ip_address_t * mr_ip,
2587 ip_address_t * sloc, u8 is_smr_invoked,
2588 u64 * nonce_res, u32 * bi_res)
Florin Corase127a7e2016-02-18 22:20:01 +01002589{
Florin Corasa2157cf2016-08-16 21:09:14 +02002590 vlib_buffer_t *b;
Florin Corase127a7e2016-02-18 22:20:01 +01002591 u32 bi;
Florin Corasa2157cf2016-08-16 21:09:14 +02002592 gid_address_t *rlocs = 0;
2593 vlib_main_t *vm = lcm->vlib_main;
Florin Corase127a7e2016-02-18 22:20:01 +01002594
2595 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2596 {
2597 clib_warning ("Can't allocate buffer for Map-Request!");
2598 return 0;
2599 }
2600
2601 b = vlib_get_buffer (vm, bi);
Florin Corasfdbc3822017-07-27 00:34:12 -07002602 b->flags = 0;
Florin Corase127a7e2016-02-18 22:20:01 +01002603
2604 /* leave some space for the encap headers */
2605 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2606
Filip Tehlar254b0362016-04-07 10:04:34 +02002607 /* get rlocs */
2608 rlocs = build_itr_rloc_list (lcm, loc_set);
2609
Filip Tehlard5fcc462016-10-17 16:20:18 +02002610 if (MR_MODE_SRC_DST == lcm->map_request_mode
2611 && GID_ADDR_SRC_DST != gid_address_type (deid))
Florin Corasdca88042016-09-14 16:01:38 +02002612 {
2613 gid_address_t sd;
2614 memset (&sd, 0, sizeof (sd));
2615 build_src_dst (&sd, seid, deid);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002616 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2617 0 /* rloc probe */ , nonce_res);
Florin Corasdca88042016-09-14 16:01:38 +02002618 }
2619 else
2620 {
2621 /* put lisp msg */
2622 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002623 0 /* rloc probe */ , nonce_res);
Florin Corasdca88042016-09-14 16:01:38 +02002624 }
Florin Corase127a7e2016-02-18 22:20:01 +01002625
2626 /* push ecm: udp-ip-lisp */
2627 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2628
Florin Corase127a7e2016-02-18 22:20:01 +01002629 /* push outer ip header */
Florin Corasddfafb82016-05-13 18:09:56 +02002630 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
Florin Corasfdbc3822017-07-27 00:34:12 -07002631 mr_ip, 1);
Florin Corase127a7e2016-02-18 22:20:01 +01002632
2633 bi_res[0] = bi;
Filip Tehlar254b0362016-04-07 10:04:34 +02002634
Florin Corasa2157cf2016-08-16 21:09:14 +02002635 vec_free (rlocs);
Florin Corase127a7e2016-02-18 22:20:01 +01002636 return b;
2637}
2638
2639static void
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002640reset_pending_mr_counters (pending_map_request_t * r)
Florin Corase127a7e2016-02-18 22:20:01 +01002641{
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002642 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2643 r->retries_num = 0;
2644}
2645
Filip Tehlar7048ff12017-07-27 08:09:14 +02002646#define foreach_msmr \
2647 _(server) \
2648 _(resolver)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002649
Filip Tehlar7048ff12017-07-27 08:09:14 +02002650#define _(name) \
2651static int \
2652elect_map_ ## name (lisp_cp_main_t * lcm) \
2653{ \
2654 lisp_msmr_t *mr; \
2655 vec_foreach (mr, lcm->map_ ## name ## s) \
2656 { \
2657 if (!mr->is_down) \
2658 { \
2659 ip_address_copy (&lcm->active_map_ ##name, &mr->address); \
2660 lcm->do_map_ ## name ## _election = 0; \
2661 return 1; \
2662 } \
2663 } \
2664 return 0; \
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002665}
Filip Tehlar7048ff12017-07-27 08:09:14 +02002666foreach_msmr
2667#undef _
2668 static void
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002669free_map_register_records (mapping_t * maps)
2670{
2671 mapping_t *map;
2672 vec_foreach (map, maps) vec_free (map->locators);
2673
2674 vec_free (maps);
2675}
2676
2677static void
2678add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2679 ip_address_t * probed_loc)
2680{
2681 u32 *li;
2682 locator_t *loc, new;
2683 ip_interface_address_t *ia = 0;
2684 void *addr;
2685 ip_address_t *new_ip = &gid_address_ip (&new.address);
2686
2687 m->locators = 0;
2688 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2689 locator_set_index);
2690 vec_foreach (li, ls->locator_indices)
2691 {
2692 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2693 new = loc[0];
2694 if (loc->local)
2695 {
2696 /* *INDENT-OFF* */
2697 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2698 loc->sw_if_index, 1 /* unnumbered */,
2699 ({
2700 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2701 ia);
2702 ip_address_set (new_ip, addr, IP4);
2703 }));
2704
2705 /* Add ipv6 locators */
2706 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2707 loc->sw_if_index, 1 /* unnumbered */,
2708 ({
2709 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2710 ia);
2711 ip_address_set (new_ip, addr, IP6);
2712 }));
2713 /* *INDENT-ON* */
2714
2715 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2716 new.probed = 1;
2717 }
2718 vec_add1 (m->locators, new);
2719 }
2720}
2721
2722static mapping_t *
2723build_map_register_record_list (lisp_cp_main_t * lcm)
2724{
2725 mapping_t *recs = 0, rec, *m;
2726
2727 /* *INDENT-OFF* */
2728 pool_foreach(m, lcm->mapping_pool,
2729 {
2730 /* for now build only local mappings */
2731 if (!m->local)
2732 continue;
2733
2734 rec = m[0];
2735 add_locators (lcm, &rec, m->locator_set_index, NULL);
2736 vec_add1 (recs, rec);
2737 });
2738 /* *INDENT-ON* */
2739
2740 return recs;
2741}
2742
2743static int
2744update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2745 lisp_key_type_t key_id, u8 * key,
2746 u16 auth_data_len, u32 msg_len)
2747{
2748 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2749 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2750
2751 unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
2752 (unsigned char *) map_reg_hdr, msg_len, NULL,
2753 NULL);
2754 clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len);
2755
2756 return 0;
2757}
2758
2759static vlib_buffer_t *
2760build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2761 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2762 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2763 u32 * bi_res)
2764{
2765 void *map_reg_hdr;
2766 vlib_buffer_t *b;
2767 u32 bi, auth_data_len = 0, msg_len = 0;
2768 vlib_main_t *vm = lcm->vlib_main;
2769
2770 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2771 {
2772 clib_warning ("Can't allocate buffer for Map-Register!");
2773 return 0;
2774 }
2775
2776 b = vlib_get_buffer (vm, bi);
2777
2778 /* leave some space for the encap headers */
2779 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2780
2781 auth_data_len = auth_data_len_by_key_id (key_id);
2782 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2783 auth_data_len, nonce_res,
2784 &msg_len);
2785
2786 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2787 msg_len);
2788
2789 /* push outer ip header */
2790 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
Florin Corasfdbc3822017-07-27 00:34:12 -07002791 ms_ip, 1);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002792
2793 bi_res[0] = bi;
2794 return b;
2795}
2796
Filip Tehlar7048ff12017-07-27 08:09:14 +02002797#define _(name) \
2798static int \
2799get_egress_map_ ##name## _ip (lisp_cp_main_t * lcm, ip_address_t * ip) \
2800{ \
2801 lisp_msmr_t *mr; \
2802 while (lcm->do_map_ ## name ## _election \
2803 | (0 == ip_fib_get_first_egress_ip_for_dst \
2804 (lcm, &lcm->active_map_ ##name, ip))) \
2805 { \
2806 if (0 == elect_map_ ## name (lcm)) \
2807 /* all map resolvers/servers are down */ \
2808 { \
2809 /* restart MR/MS checking by marking all of them up */ \
2810 vec_foreach (mr, lcm->map_ ## name ## s) mr->is_down = 0; \
2811 return -1; \
2812 } \
2813 } \
2814 return 0; \
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002815}
2816
Filip Tehlar7048ff12017-07-27 08:09:14 +02002817foreach_msmr
2818#undef _
Filip Tehlarcda70662017-01-16 10:30:03 +01002819/* CP output statistics */
2820#define foreach_lisp_cp_output_error \
2821_(MAP_REGISTERS_SENT, "map-registers sent") \
Filip Tehlar5908e182017-10-16 06:51:11 -07002822_(MAP_REQUESTS_SENT, "map-requests sent") \
Filip Tehlarcda70662017-01-16 10:30:03 +01002823_(RLOC_PROBES_SENT, "rloc-probes sent")
Filip Tehlarcda70662017-01-16 10:30:03 +01002824static char *lisp_cp_output_error_strings[] = {
2825#define _(sym,string) string,
2826 foreach_lisp_cp_output_error
2827#undef _
2828};
2829
2830typedef enum
2831{
2832#define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2833 foreach_lisp_cp_output_error
2834#undef _
2835 LISP_CP_OUTPUT_N_ERROR,
2836} lisp_cp_output_error_t;
2837
2838static uword
2839lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2840 vlib_frame_t * from_frame)
2841{
2842 return 0;
2843}
2844
2845/* dummy node used only for statistics */
2846/* *INDENT-OFF* */
2847VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2848 .function = lisp_cp_output,
2849 .name = "lisp-cp-output",
2850 .vector_size = sizeof (u32),
2851 .format_trace = format_lisp_cp_input_trace,
2852 .type = VLIB_NODE_TYPE_INTERNAL,
2853
2854 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2855 .error_strings = lisp_cp_output_error_strings,
2856
2857 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2858
2859 .next_nodes = {
2860 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2861 },
2862};
2863/* *INDENT-ON* */
2864
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002865static int
2866send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2867 u32 local_locator_set_index, ip_address_t * sloc,
2868 ip_address_t * rloc)
2869{
2870 locator_set_t *ls;
2871 u32 bi;
2872 vlib_buffer_t *b;
2873 vlib_frame_t *f;
2874 u64 nonce = 0;
2875 u32 next_index, *to_next;
2876 gid_address_t *itr_rlocs;
2877
2878 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2879 itr_rlocs = build_itr_rloc_list (lcm, ls);
2880
2881 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2882 vec_free (itr_rlocs);
2883 if (!b)
2884 return -1;
2885
2886 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2887
Filip Tehlar272c69e2017-02-15 16:40:35 +01002888 next_index = (ip_addr_version (rloc) == IP4) ?
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002889 ip4_lookup_node.index : ip6_lookup_node.index;
2890
2891 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2892
2893 /* Enqueue the packet */
2894 to_next = vlib_frame_vector_args (f);
2895 to_next[0] = bi;
2896 f->n_vectors = 1;
2897 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2898
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002899 return 0;
2900}
2901
2902static int
2903send_rloc_probes (lisp_cp_main_t * lcm)
2904{
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002905 u8 lprio = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002906 mapping_t *lm;
2907 fwd_entry_t *e;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002908 locator_pair_t *lp;
Filip Tehlarcda70662017-01-16 10:30:03 +01002909 u32 si, rloc_probes_sent = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002910
2911 /* *INDENT-OFF* */
2912 pool_foreach (e, lcm->fwd_entry_pool,
2913 {
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002914 if (vec_len (e->locator_pairs) == 0)
2915 continue;
2916
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002917 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2918 if (~0 == si)
2919 {
2920 clib_warning ("internal error: cannot find local eid %U in "
2921 "map-cache!", format_gid_address, &e->leid);
2922 continue;
2923 }
2924 lm = pool_elt_at_index (lcm->mapping_pool, si);
2925
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002926 /* get the best (lowest) priority */
2927 lprio = e->locator_pairs[0].priority;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002928
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002929 /* send rloc-probe for pair(s) with the best remote locator priority */
2930 vec_foreach (lp, e->locator_pairs)
2931 {
2932 if (lp->priority != lprio)
2933 break;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002934
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002935 /* get first remote locator */
2936 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2937 &lp->rmt_loc);
Filip Tehlarcda70662017-01-16 10:30:03 +01002938 rloc_probes_sent++;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002939 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002940 });
2941 /* *INDENT-ON* */
2942
Filip Tehlarcda70662017-01-16 10:30:03 +01002943 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2944 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2945 rloc_probes_sent);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002946 return 0;
2947}
2948
2949static int
2950send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2951{
Filip Tehlar7048ff12017-07-27 08:09:14 +02002952 pending_map_register_t *pmr;
Filip Tehlarcda70662017-01-16 10:30:03 +01002953 u32 bi, map_registers_sent = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002954 vlib_buffer_t *b;
2955 ip_address_t sloc;
2956 vlib_frame_t *f;
2957 u64 nonce = 0;
2958 u32 next_index, *to_next;
Filip Tehlarcf121c82017-05-03 10:12:44 +02002959 mapping_t *records, *r, *group, *k;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002960
Filip Tehlar7048ff12017-07-27 08:09:14 +02002961 if (get_egress_map_server_ip (lcm, &sloc) < 0)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002962 return -1;
2963
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002964 records = build_map_register_record_list (lcm);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002965 if (!records)
2966 return -1;
2967
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002968 vec_foreach (r, records)
2969 {
2970 u8 *key = r->key;
2971 u8 key_id = r->key_id;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002972
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002973 if (!key)
2974 continue; /* no secret key -> map-register cannot be sent */
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002975
Filip Tehlarcf121c82017-05-03 10:12:44 +02002976 group = 0;
2977 vec_add1 (group, r[0]);
2978
2979 /* group mappings that share common key */
2980 for (k = r + 1; k < vec_end (records); k++)
2981 {
2982 if (k->key_id != r->key_id)
2983 continue;
2984
2985 if (vec_is_equal (k->key, r->key))
2986 {
2987 vec_add1 (group, k[0]);
2988 k->key = 0; /* don't process this mapping again */
2989 }
2990 }
2991
Filip Tehlar7048ff12017-07-27 08:09:14 +02002992 b = build_map_register (lcm, &sloc, &lcm->active_map_server, &nonce,
2993 want_map_notif, group, key_id, key, &bi);
Filip Tehlarcf121c82017-05-03 10:12:44 +02002994 vec_free (group);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002995 if (!b)
2996 continue;
2997
2998 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2999
Filip Tehlar7048ff12017-07-27 08:09:14 +02003000 next_index = (ip_addr_version (&lcm->active_map_server) == IP4) ?
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003001 ip4_lookup_node.index : ip6_lookup_node.index;
3002
3003 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3004
3005 /* Enqueue the packet */
3006 to_next = vlib_frame_vector_args (f);
3007 to_next[0] = bi;
3008 f->n_vectors = 1;
3009 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
Filip Tehlarcda70662017-01-16 10:30:03 +01003010 map_registers_sent++;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003011
Filip Tehlar7048ff12017-07-27 08:09:14 +02003012 pool_get (lcm->pending_map_registers_pool, pmr);
3013 memset (pmr, 0, sizeof (*pmr));
3014 pmr->time_to_expire = PENDING_MREG_EXPIRATION_TIME;
3015 hash_set (lcm->map_register_messages_by_nonce, nonce,
3016 pmr - lcm->pending_map_registers_pool);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003017 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003018 free_map_register_records (records);
3019
Filip Tehlarcda70662017-01-16 10:30:03 +01003020 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3021 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
3022 map_registers_sent);
3023
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003024 return 0;
3025}
3026
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003027#define send_encapsulated_map_request(lcm, seid, deid, smr) \
3028 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
3029
3030#define resend_encapsulated_map_request(lcm, seid, deid, smr) \
3031 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
3032
3033static int
Florin Corasa2157cf2016-08-16 21:09:14 +02003034_send_encapsulated_map_request (lisp_cp_main_t * lcm,
3035 gid_address_t * seid, gid_address_t * deid,
3036 u8 is_smr_invoked, u8 is_resend)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003037{
Florin Corasa2157cf2016-08-16 21:09:14 +02003038 u32 next_index, bi = 0, *to_next, map_index;
3039 vlib_buffer_t *b;
3040 vlib_frame_t *f;
Florin Corase127a7e2016-02-18 22:20:01 +01003041 u64 nonce = 0;
Florin Corasa2157cf2016-08-16 21:09:14 +02003042 locator_set_t *loc_set;
3043 mapping_t *map;
3044 pending_map_request_t *pmr, *duplicate_pmr = 0;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003045 ip_address_t sloc;
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02003046 u32 ls_index;
Florin Corase127a7e2016-02-18 22:20:01 +01003047
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003048 /* if there is already a pending request remember it */
Florin Corasa2157cf2016-08-16 21:09:14 +02003049
3050 /* *INDENT-OFF* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003051 pool_foreach(pmr, lcm->pending_map_requests_pool,
3052 ({
3053 if (!gid_address_cmp (&pmr->src, seid)
3054 && !gid_address_cmp (&pmr->dst, deid))
3055 {
3056 duplicate_pmr = pmr;
3057 break;
3058 }
3059 }));
Florin Corasa2157cf2016-08-16 21:09:14 +02003060 /* *INDENT-ON* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003061
3062 if (!is_resend && duplicate_pmr)
3063 {
3064 /* don't send the request if there is a pending map request already */
3065 return 0;
3066 }
3067
Filip Tehlar0a8840d2017-10-16 05:48:23 -07003068 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
3069
Florin Corase127a7e2016-02-18 22:20:01 +01003070 /* get locator-set for seid */
Filip Tehlar0a8840d2017-10-16 05:48:23 -07003071 if (!pitr_mode && gid_address_type (deid) != GID_ADDR_NSH)
Florin Corase127a7e2016-02-18 22:20:01 +01003072 {
Filip Tehlar53f09e32016-05-19 14:25:44 +02003073 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
3074 if (map_index == ~0)
Florin Corasa2157cf2016-08-16 21:09:14 +02003075 {
3076 clib_warning ("No local mapping found in eid-table for %U!",
3077 format_gid_address, seid);
3078 return -1;
3079 }
Filip Tehlar53f09e32016-05-19 14:25:44 +02003080
3081 map = pool_elt_at_index (lcm->mapping_pool, map_index);
3082
3083 if (!map->local)
Florin Corasa2157cf2016-08-16 21:09:14 +02003084 {
3085 clib_warning
3086 ("Mapping found for src eid %U is not marked as local!",
3087 format_gid_address, seid);
3088 return -1;
3089 }
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02003090 ls_index = map->locator_set_index;
Filip Tehlar53f09e32016-05-19 14:25:44 +02003091 }
3092 else
3093 {
Filip Tehlar0a8840d2017-10-16 05:48:23 -07003094 if (pitr_mode)
Filip Tehlaref2a5bf2017-05-30 07:14:46 +02003095 {
Filip Tehlar0a8840d2017-10-16 05:48:23 -07003096 if (lcm->pitr_map_index != ~0)
3097 {
3098 map =
3099 pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
3100 ls_index = map->locator_set_index;
3101 }
3102 else
3103 {
3104 return -1;
3105 }
Filip Tehlaref2a5bf2017-05-30 07:14:46 +02003106 }
3107 else
3108 {
3109 if (lcm->nsh_map_index == (u32) ~ 0)
3110 {
3111 clib_warning ("No locator-set defined for NSH!");
3112 return -1;
3113 }
3114 else
3115 {
3116 map = pool_elt_at_index (lcm->mapping_pool, lcm->nsh_map_index);
3117 ls_index = map->locator_set_index;
3118 }
3119 }
Florin Corase127a7e2016-02-18 22:20:01 +01003120 }
3121
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02003122 /* overwrite locator set if map-request itr-rlocs configured */
3123 if (~0 != lcm->mreq_itr_rlocs)
3124 {
3125 ls_index = lcm->mreq_itr_rlocs;
3126 }
3127
3128 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
Florin Corase127a7e2016-02-18 22:20:01 +01003129
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003130 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003131 {
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003132 if (duplicate_pmr)
3133 duplicate_pmr->to_be_removed = 1;
3134 return -1;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003135 }
Florin Corasddfafb82016-05-13 18:09:56 +02003136
Florin Corase127a7e2016-02-18 22:20:01 +01003137 /* build the encapsulated map request */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003138 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
Florin Corasa2157cf2016-08-16 21:09:14 +02003139 &lcm->active_map_resolver,
3140 &sloc, is_smr_invoked, &nonce, &bi);
Florin Corase127a7e2016-02-18 22:20:01 +01003141
3142 if (!b)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003143 return -1;
Florin Corase127a7e2016-02-18 22:20:01 +01003144
Florin Corasf727db92016-06-23 15:01:58 +02003145 /* set fib index to default and lookup node */
Florin Corasa2157cf2016-08-16 21:09:14 +02003146 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3147 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3148 ip4_lookup_node.index : ip6_lookup_node.index;
Florin Corase127a7e2016-02-18 22:20:01 +01003149
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003150 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
Florin Corase127a7e2016-02-18 22:20:01 +01003151
3152 /* Enqueue the packet */
3153 to_next = vlib_frame_vector_args (f);
3154 to_next[0] = bi;
3155 f->n_vectors = 1;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003156 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
Florin Corase127a7e2016-02-18 22:20:01 +01003157
Filip Tehlar5908e182017-10-16 06:51:11 -07003158 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
3159 LISP_CP_OUTPUT_ERROR_MAP_REQUESTS_SENT, 1);
3160
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003161 if (duplicate_pmr)
3162 /* if there is a pending request already update it */
3163 {
Florin Corasa2157cf2016-08-16 21:09:14 +02003164 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
3165 {
3166 /* remove the oldest nonce */
3167 u64 CLIB_UNUSED (tmp), *nonce_del;
3168 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
3169 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
3170 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
3171 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003172
Florin Corasf4691cd2016-08-15 19:16:32 +02003173 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003174 hash_set (lcm->pending_map_requests_by_nonce, nonce,
Florin Corasa2157cf2016-08-16 21:09:14 +02003175 duplicate_pmr - lcm->pending_map_requests_pool);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003176 }
3177 else
3178 {
3179 /* add map-request to pending requests table */
Florin Corasa2157cf2016-08-16 21:09:14 +02003180 pool_get (lcm->pending_map_requests_pool, pmr);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003181 memset (pmr, 0, sizeof (*pmr));
3182 gid_address_copy (&pmr->src, seid);
3183 gid_address_copy (&pmr->dst, deid);
Florin Corasf4691cd2016-08-15 19:16:32 +02003184 clib_fifo_add1 (pmr->nonces, nonce);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003185 pmr->is_smr_invoked = is_smr_invoked;
3186 reset_pending_mr_counters (pmr);
3187 hash_set (lcm->pending_map_requests_by_nonce, nonce,
Florin Corasa2157cf2016-08-16 21:09:14 +02003188 pmr - lcm->pending_map_requests_pool);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003189 }
3190
3191 return 0;
Florin Corase127a7e2016-02-18 22:20:01 +01003192}
3193
3194static void
Florin Corasa2157cf2016-08-16 21:09:14 +02003195get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
Florin Corase127a7e2016-02-18 22:20:01 +01003196{
Florin Corasa2157cf2016-08-16 21:09:14 +02003197 ip4_header_t *ip4 = hdr;
3198 ip6_header_t *ip6;
Florin Corase127a7e2016-02-18 22:20:01 +01003199
3200 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
3201 {
Florin Corasa2157cf2016-08-16 21:09:14 +02003202 ip_address_set (src, &ip4->src_address, IP4);
3203 ip_address_set (dst, &ip4->dst_address, IP4);
Florin Corase127a7e2016-02-18 22:20:01 +01003204 }
3205 else
3206 {
3207 ip6 = hdr;
Florin Corasa2157cf2016-08-16 21:09:14 +02003208 ip_address_set (src, &ip6->src_address, IP6);
3209 ip_address_set (dst, &ip6->dst_address, IP6);
Florin Corase127a7e2016-02-18 22:20:01 +01003210 }
3211}
3212
Filip Tehlar324112f2016-06-02 16:07:38 +02003213static u32
Florin Coras1a1adc72016-07-22 01:45:30 +02003214lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
Florin Corasa2157cf2016-08-16 21:09:14 +02003215 u8 version)
Filip Tehlar324112f2016-06-02 16:07:38 +02003216{
Florin Corasa2157cf2016-08-16 21:09:14 +02003217 uword *vnip;
Neale Ranns0bfe5d82016-08-25 15:29:12 +01003218 u32 vni = ~0, table_id = ~0;
Filip Tehlar324112f2016-06-02 16:07:38 +02003219
Florin Coras87e40692016-09-22 18:02:17 +02003220 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
3221 IP4 ? FIB_PROTOCOL_IP4 :
3222 FIB_PROTOCOL_IP6),
3223 vnet_buffer
3224 (b)->sw_if_index
3225 [VLIB_RX]);
Filip Tehlar324112f2016-06-02 16:07:38 +02003226
3227 vnip = hash_get (lcm->vni_by_table_id, table_id);
3228 if (vnip)
3229 vni = vnip[0];
3230 else
3231 clib_warning ("vrf %d is not mapped to any vni!", table_id);
3232
3233 return vni;
3234}
3235
Florin Coras1a1adc72016-07-22 01:45:30 +02003236always_inline u32
Filip Tehlard5a65db2017-05-17 17:21:10 +02003237lisp_get_bd_from_buffer_eth (vlib_buffer_t * b)
Florin Coras1a1adc72016-07-22 01:45:30 +02003238{
Florin Coras1a1adc72016-07-22 01:45:30 +02003239 u32 sw_if_index0;
3240
Florin Corasa2157cf2016-08-16 21:09:14 +02003241 l2input_main_t *l2im = &l2input_main;
3242 l2_input_config_t *config;
3243 l2_bridge_domain_t *bd_config;
Florin Coras1a1adc72016-07-22 01:45:30 +02003244
Florin Corasa2157cf2016-08-16 21:09:14 +02003245 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
3246 config = vec_elt_at_index (l2im->configs, sw_if_index0);
Florin Coras1a1adc72016-07-22 01:45:30 +02003247 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
3248
Filip Tehlard5a65db2017-05-17 17:21:10 +02003249 return bd_config->bd_id;
3250}
3251
3252always_inline u32
3253lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
3254{
3255 uword *vnip;
3256 u32 vni = ~0;
3257 u32 bd = lisp_get_bd_from_buffer_eth (b);
3258
3259 vnip = hash_get (lcm->vni_by_bd_id, bd);
Florin Coras1a1adc72016-07-22 01:45:30 +02003260 if (vnip)
3261 vni = vnip[0];
3262 else
Filip Tehlard5a65db2017-05-17 17:21:10 +02003263 clib_warning ("bridge domain %d is not mapped to any vni!", bd);
Florin Coras1a1adc72016-07-22 01:45:30 +02003264
3265 return vni;
3266}
3267
Filip Tehlar4868ff62017-03-09 16:48:39 +01003268void
Florin Corasa2157cf2016-08-16 21:09:14 +02003269get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
Filip Tehlar4868ff62017-03-09 16:48:39 +01003270 gid_address_t * src, gid_address_t * dst,
3271 u16 type)
Florin Coras1a1adc72016-07-22 01:45:30 +02003272{
Filip Tehlaref2a5bf2017-05-30 07:14:46 +02003273 ethernet_header_t *eh;
Florin Coras1a1adc72016-07-22 01:45:30 +02003274 u32 vni = 0;
Filip Tehlar05879992017-09-05 15:46:09 +02003275 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
Florin Coras1a1adc72016-07-22 01:45:30 +02003276
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003277 memset (src, 0, sizeof (*src));
3278 memset (dst, 0, sizeof (*dst));
Florin Coras1a1adc72016-07-22 01:45:30 +02003279
Filip Tehlard5a65db2017-05-17 17:21:10 +02003280 gid_address_type (dst) = GID_ADDR_NO_ADDRESS;
3281 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3282
Florin Coras1a1adc72016-07-22 01:45:30 +02003283 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
3284 {
Florin Corasa2157cf2016-08-16 21:09:14 +02003285 ip4_header_t *ip;
Florin Coras1a1adc72016-07-22 01:45:30 +02003286 u8 version, preflen;
3287
Florin Corasa2157cf2016-08-16 21:09:14 +02003288 gid_address_type (src) = GID_ADDR_IP_PREFIX;
3289 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
Florin Coras1a1adc72016-07-22 01:45:30 +02003290
3291 ip = vlib_buffer_get_current (b);
Florin Corasa2157cf2016-08-16 21:09:14 +02003292 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
Florin Coras1a1adc72016-07-22 01:45:30 +02003293
Florin Corasa2157cf2016-08-16 21:09:14 +02003294 version = gid_address_ip_version (src);
Florin Coras1a1adc72016-07-22 01:45:30 +02003295 preflen = ip_address_max_len (version);
Florin Corasa2157cf2016-08-16 21:09:14 +02003296 gid_address_ippref_len (src) = preflen;
3297 gid_address_ippref_len (dst) = preflen;
Florin Coras1a1adc72016-07-22 01:45:30 +02003298
3299 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
3300 gid_address_vni (dst) = vni;
3301 gid_address_vni (src) = vni;
3302 }
3303 else if (LISP_AFI_MAC == type)
3304 {
Filip Tehlard5a65db2017-05-17 17:21:10 +02003305 ethernet_arp_header_t *ah;
Florin Coras1a1adc72016-07-22 01:45:30 +02003306
3307 eh = vlib_buffer_get_current (b);
3308
Filip Tehlard5a65db2017-05-17 17:21:10 +02003309 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_ARP)
3310 {
3311 ah = (ethernet_arp_header_t *) (((u8 *) eh) + sizeof (*eh));
Florin Corasc1c09762018-01-30 03:21:32 -08003312 gid_address_type (dst) = GID_ADDR_ARP;
3313
Filip Tehlard5a65db2017-05-17 17:21:10 +02003314 if (clib_net_to_host_u16 (ah->opcode)
3315 != ETHERNET_ARP_OPCODE_request)
Florin Corasc1c09762018-01-30 03:21:32 -08003316 {
3317 memset (&gid_address_arp_ndp_ip (dst), 0,
3318 sizeof (ip_address_t));
3319 ip_addr_version (&gid_address_arp_ndp_ip (dst)) = IP4;
3320 gid_address_arp_ndp_bd (dst) = ~0;
3321 return;
3322 }
Florin Coras1a1adc72016-07-22 01:45:30 +02003323
Filip Tehlard5a65db2017-05-17 17:21:10 +02003324 gid_address_arp_bd (dst) = lisp_get_bd_from_buffer_eth (b);
3325 clib_memcpy (&gid_address_arp_ip4 (dst),
3326 &ah->ip4_over_ethernet[1].ip4, 4);
3327 }
3328 else
3329 {
Filip Tehlar05879992017-09-05 15:46:09 +02003330 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_IP6)
3331 {
3332 ip6_header_t *ip;
3333 ip = (ip6_header_t *) (eh + 1);
3334
3335 if (IP_PROTOCOL_ICMP6 == ip->protocol)
3336 {
3337 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3338 ndh = ip6_next_header (ip);
3339 if (ndh->icmp.type == ICMP6_neighbor_solicitation)
3340 {
Florin Corasc1c09762018-01-30 03:21:32 -08003341 gid_address_type (dst) = GID_ADDR_NDP;
3342
3343 /* check that source link layer address option is present */
Filip Tehlar05879992017-09-05 15:46:09 +02003344 opt = (void *) (ndh + 1);
3345 if ((opt->header.type !=
3346 ICMP6_NEIGHBOR_DISCOVERY_OPTION_source_link_layer_address)
3347 || (opt->header.n_data_u64s != 1))
Florin Corasc1c09762018-01-30 03:21:32 -08003348 {
3349 memset (&gid_address_arp_ndp_ip (dst), 0,
3350 sizeof (ip_address_t));
3351 ip_addr_version (&gid_address_arp_ndp_ip (dst)) =
3352 IP6;
3353 gid_address_arp_ndp_bd (dst) = ~0;
3354 gid_address_type (src) = GID_ADDR_NO_ADDRESS;
3355 return;
3356 }
Filip Tehlar05879992017-09-05 15:46:09 +02003357
Filip Tehlar05879992017-09-05 15:46:09 +02003358 gid_address_ndp_bd (dst) =
3359 lisp_get_bd_from_buffer_eth (b);
3360 ip_address_set (&gid_address_arp_ndp_ip (dst),
3361 &ndh->target_address, IP6);
3362 return;
3363 }
3364 }
3365 }
3366
Filip Tehlard5a65db2017-05-17 17:21:10 +02003367 gid_address_type (src) = GID_ADDR_MAC;
3368 gid_address_type (dst) = GID_ADDR_MAC;
3369 mac_copy (&gid_address_mac (src), eh->src_address);
3370 mac_copy (&gid_address_mac (dst), eh->dst_address);
Florin Coras1a1adc72016-07-22 01:45:30 +02003371
Filip Tehlard5a65db2017-05-17 17:21:10 +02003372 /* get vni */
3373 vni = lisp_get_vni_from_buffer_eth (lcm, b);
3374
3375 gid_address_vni (dst) = vni;
3376 gid_address_vni (src) = vni;
3377 }
Florin Coras1a1adc72016-07-22 01:45:30 +02003378 }
Florin Corasce1b4c72017-01-26 14:25:34 -08003379 else if (LISP_AFI_LCAF == type)
3380 {
Filip Tehlaref2a5bf2017-05-30 07:14:46 +02003381 lisp_nsh_hdr_t *nh;
3382 eh = vlib_buffer_get_current (b);
3383
3384 if (clib_net_to_host_u16 (eh->type) == ETHERNET_TYPE_NSH)
3385 {
3386 nh = (lisp_nsh_hdr_t *) (((u8 *) eh) + sizeof (*eh));
3387 u32 spi = clib_net_to_host_u32 (nh->spi_si << 8);
3388 u8 si = (u8) clib_net_to_host_u32 (nh->spi_si);
3389 gid_address_nsh_spi (dst) = spi;
3390 gid_address_nsh_si (dst) = si;
3391
3392 gid_address_type (dst) = GID_ADDR_NSH;
Filip Tehlar8d7a0b92017-10-18 07:10:25 -07003393 gid_address_type (src) = GID_ADDR_NSH;
Filip Tehlaref2a5bf2017-05-30 07:14:46 +02003394 }
Florin Corasce1b4c72017-01-26 14:25:34 -08003395 }
Florin Coras1a1adc72016-07-22 01:45:30 +02003396}
3397
Florin Corase127a7e2016-02-18 22:20:01 +01003398static uword
Neale Ranns0bfe5d82016-08-25 15:29:12 +01003399lisp_cp_lookup_inline (vlib_main_t * vm,
3400 vlib_node_runtime_t * node,
3401 vlib_frame_t * from_frame, int overlay)
Florin Corase127a7e2016-02-18 22:20:01 +01003402{
Filip Tehlar05879992017-09-05 15:46:09 +02003403 icmp6_neighbor_discovery_ethernet_link_layer_address_option_t *opt;
Filip Tehlard5a65db2017-05-17 17:21:10 +02003404 u32 *from, *to_next, di, si;
Florin Corasa2157cf2016-08-16 21:09:14 +02003405 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar5908e182017-10-16 06:51:11 -07003406 u32 next_index;
Filip Tehlard5a65db2017-05-17 17:21:10 +02003407 uword n_left_from, n_left_to_next;
3408 vnet_main_t *vnm = vnet_get_main ();
Florin Corase127a7e2016-02-18 22:20:01 +01003409
3410 from = vlib_frame_vector_args (from_frame);
3411 n_left_from = from_frame->n_vectors;
Filip Tehlard5a65db2017-05-17 17:21:10 +02003412 next_index = node->cached_next_index;
Florin Corase127a7e2016-02-18 22:20:01 +01003413
3414 while (n_left_from > 0)
3415 {
Filip Tehlard5a65db2017-05-17 17:21:10 +02003416 vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
Florin Corase127a7e2016-02-18 22:20:01 +01003417
Filip Tehlard5a65db2017-05-17 17:21:10 +02003418 while (n_left_from > 0 && n_left_to_next > 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02003419 {
Filip Tehlard5a65db2017-05-17 17:21:10 +02003420 u32 pi0, sw_if_index0, next0;
3421 u64 mac0;
Florin Corasa2157cf2016-08-16 21:09:14 +02003422 vlib_buffer_t *b0;
3423 gid_address_t src, dst;
Filip Tehlard5a65db2017-05-17 17:21:10 +02003424 ethernet_arp_header_t *arp0;
3425 ethernet_header_t *eth0;
3426 vnet_hw_interface_t *hw_if0;
Filip Tehlar05879992017-09-05 15:46:09 +02003427 ethernet_header_t *eh0;
3428 icmp6_neighbor_solicitation_or_advertisement_header_t *ndh;
3429 ip6_header_t *ip0;
Florin Corase127a7e2016-02-18 22:20:01 +01003430
Florin Corasa2157cf2016-08-16 21:09:14 +02003431 pi0 = from[0];
3432 from += 1;
3433 n_left_from -= 1;
Filip Tehlard5a65db2017-05-17 17:21:10 +02003434 to_next[0] = pi0;
3435 to_next += 1;
3436 n_left_to_next -= 1;
Florin Corase127a7e2016-02-18 22:20:01 +01003437
Florin Corasa2157cf2016-08-16 21:09:14 +02003438 b0 = vlib_get_buffer (vm, pi0);
Florin Corase127a7e2016-02-18 22:20:01 +01003439
Florin Corasa2157cf2016-08-16 21:09:14 +02003440 /* src/dst eid pair */
Filip Tehlar4868ff62017-03-09 16:48:39 +01003441 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst, overlay);
Filip Tehlar324112f2016-06-02 16:07:38 +02003442
Filip Tehlard5a65db2017-05-17 17:21:10 +02003443 if (gid_address_type (&dst) == GID_ADDR_ARP)
3444 {
3445 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
Filip Tehlar05879992017-09-05 15:46:09 +02003446 if (GID_LOOKUP_MISS_L2 == mac0)
3447 goto drop;
Filip Tehlard5a65db2017-05-17 17:21:10 +02003448
Filip Tehlar05879992017-09-05 15:46:09 +02003449 /* send ARP reply */
3450 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3451 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
Filip Tehlard5a65db2017-05-17 17:21:10 +02003452
Filip Tehlar05879992017-09-05 15:46:09 +02003453 hw_if0 = vnet_get_sup_hw_interface (vnm, sw_if_index0);
Filip Tehlard5a65db2017-05-17 17:21:10 +02003454
Filip Tehlar05879992017-09-05 15:46:09 +02003455 eth0 = vlib_buffer_get_current (b0);
3456 arp0 = (ethernet_arp_header_t *) (((u8 *) eth0)
3457 + sizeof (*eth0));
3458 arp0->opcode = clib_host_to_net_u16 (ETHERNET_ARP_OPCODE_reply);
3459 arp0->ip4_over_ethernet[1] = arp0->ip4_over_ethernet[0];
3460 clib_memcpy (arp0->ip4_over_ethernet[0].ethernet,
3461 (u8 *) & mac0, 6);
3462 clib_memcpy (&arp0->ip4_over_ethernet[0].ip4,
3463 &gid_address_arp_ip4 (&dst), 4);
Filip Tehlard5a65db2017-05-17 17:21:10 +02003464
Filip Tehlar05879992017-09-05 15:46:09 +02003465 /* Hardware must be ethernet-like. */
3466 ASSERT (vec_len (hw_if0->hw_address) == 6);
Filip Tehlard5a65db2017-05-17 17:21:10 +02003467
Filip Tehlar05879992017-09-05 15:46:09 +02003468 clib_memcpy (eth0->dst_address, eth0->src_address, 6);
3469 clib_memcpy (eth0->src_address, hw_if0->hw_address, 6);
Filip Tehlard5a65db2017-05-17 17:21:10 +02003470
Filip Tehlar05879992017-09-05 15:46:09 +02003471 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_ARP_REPLY_TX];
3472 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3473 goto enqueue;
3474 }
3475 else if (gid_address_type (&dst) == GID_ADDR_NDP)
3476 {
3477 mac0 = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3478 if (GID_LOOKUP_MISS_L2 == mac0)
3479 goto drop;
3480
3481 sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX];
3482 vnet_buffer (b0)->sw_if_index[VLIB_TX] = sw_if_index0;
3483
3484 eh0 = vlib_buffer_get_current (b0);
3485 ip0 = (ip6_header_t *) (eh0 + 1);
3486 ndh = ip6_next_header (ip0);
3487 int bogus_length;
3488 ip0->dst_address = ip0->src_address;
3489 ip0->src_address = ndh->target_address;
3490 ip0->hop_limit = 255;
3491 opt = (void *) (ndh + 1);
3492 opt->header.type =
3493 ICMP6_NEIGHBOR_DISCOVERY_OPTION_target_link_layer_address;
3494 clib_memcpy (opt->ethernet_address, (u8 *) & mac0, 6);
3495 ndh->icmp.type = ICMP6_neighbor_advertisement;
3496 ndh->advertisement_flags = clib_host_to_net_u32
3497 (ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_SOLICITED |
3498 ICMP6_NEIGHBOR_ADVERTISEMENT_FLAG_OVERRIDE);
3499 ndh->icmp.checksum = 0;
3500 ndh->icmp.checksum =
3501 ip6_tcp_udp_icmp_compute_checksum (vm, b0, ip0,
3502 &bogus_length);
3503 clib_memcpy (eh0->dst_address, eh0->src_address, 6);
3504 clib_memcpy (eh0->src_address, (u8 *) & mac0, 6);
3505 b0->error =
3506 node->errors
3507 [LISP_CP_LOOKUP_ERROR_NDP_NEIGHBOR_ADVERTISEMENT_TX];
3508 next0 = LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX;
3509 goto enqueue;
Filip Tehlard5a65db2017-05-17 17:21:10 +02003510 }
3511
Paul Vinciguerrabdc0e6b2018-09-22 05:32:50 -07003512 /* if we have remote mapping for destination already in map-cache
Florin Corasa2157cf2016-08-16 21:09:14 +02003513 add forwarding tunnel directly. If not send a map-request */
Florin Corasdca88042016-09-14 16:01:38 +02003514 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
3515 &src);
Florin Corasa2157cf2016-08-16 21:09:14 +02003516 if (~0 != di)
3517 {
3518 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
3519 /* send a map-request also in case of negative mapping entry
3520 with corresponding action */
3521 if (m->action == LISP_SEND_MAP_REQUEST)
3522 {
3523 /* send map-request */
3524 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3525 0 /* is_resend */ );
Florin Corasa2157cf2016-08-16 21:09:14 +02003526 }
3527 else
3528 {
Filip Tehlaref2a5bf2017-05-30 07:14:46 +02003529 if (GID_ADDR_NSH != gid_address_type (&dst))
3530 {
3531 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
3532 &src);
3533 }
3534 else
3535 si = lcm->nsh_map_index;
3536
Florin Corasa2157cf2016-08-16 21:09:14 +02003537 if (~0 != si)
3538 {
Filip Tehlarce1aae42017-01-04 10:42:25 +01003539 dp_add_fwd_entry_from_mt (si, di);
Florin Corasa2157cf2016-08-16 21:09:14 +02003540 }
3541 }
3542 }
3543 else
3544 {
3545 /* send map-request */
3546 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
3547 0 /* is_resend */ );
Florin Corasa2157cf2016-08-16 21:09:14 +02003548 }
Florin Corase127a7e2016-02-18 22:20:01 +01003549
Filip Tehlar05879992017-09-05 15:46:09 +02003550 drop:
Filip Tehlard5a65db2017-05-17 17:21:10 +02003551 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
Filip Tehlar05879992017-09-05 15:46:09 +02003552 next0 = LISP_CP_LOOKUP_NEXT_DROP;
3553 enqueue:
Florin Corasa2157cf2016-08-16 21:09:14 +02003554 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3555 {
3556 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
3557 sizeof (*tr));
Andrej Kozemcak94e34762016-05-25 12:43:21 +02003558
Florin Corasa2157cf2016-08-16 21:09:14 +02003559 memset (tr, 0, sizeof (*tr));
3560 gid_address_copy (&tr->dst_eid, &dst);
Florin Coras5a1c11b2016-09-06 16:29:34 +02003561 ip_address_copy (&tr->map_resolver_ip,
3562 &lcm->active_map_resolver);
Florin Corasa2157cf2016-08-16 21:09:14 +02003563 }
3564 gid_address_free (&dst);
3565 gid_address_free (&src);
Filip Tehlard5a65db2017-05-17 17:21:10 +02003566 vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
3567 to_next,
3568 n_left_to_next, pi0, next0);
Florin Corasa2157cf2016-08-16 21:09:14 +02003569 }
Florin Corase127a7e2016-02-18 22:20:01 +01003570
Filip Tehlard5a65db2017-05-17 17:21:10 +02003571 vlib_put_next_frame (vm, node, next_index, n_left_to_next);
Florin Corase127a7e2016-02-18 22:20:01 +01003572 }
Florin Corase127a7e2016-02-18 22:20:01 +01003573 return from_frame->n_vectors;
3574}
3575
Neale Ranns0bfe5d82016-08-25 15:29:12 +01003576static uword
3577lisp_cp_lookup_ip4 (vlib_main_t * vm,
3578 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3579{
3580 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
3581}
3582
3583static uword
3584lisp_cp_lookup_ip6 (vlib_main_t * vm,
3585 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3586{
3587 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
3588}
3589
Neale Ranns5e575b12016-10-03 09:40:25 +01003590static uword
3591lisp_cp_lookup_l2 (vlib_main_t * vm,
3592 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3593{
3594 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
3595}
3596
Florin Corasce1b4c72017-01-26 14:25:34 -08003597static uword
3598lisp_cp_lookup_nsh (vlib_main_t * vm,
3599 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
3600{
3601 /* TODO decide if NSH should be propagated as LCAF or not */
3602 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
3603}
3604
Florin Corasa2157cf2016-08-16 21:09:14 +02003605/* *INDENT-OFF* */
Neale Ranns0bfe5d82016-08-25 15:29:12 +01003606VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
3607 .function = lisp_cp_lookup_ip4,
3608 .name = "lisp-cp-lookup-ip4",
3609 .vector_size = sizeof (u32),
3610 .format_trace = format_lisp_cp_lookup_trace,
3611 .type = VLIB_NODE_TYPE_INTERNAL,
3612
3613 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3614 .error_strings = lisp_cp_lookup_error_strings,
3615
3616 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3617
3618 .next_nodes = {
3619 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
Filip Tehlar05879992017-09-05 15:46:09 +02003620 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
Neale Ranns0bfe5d82016-08-25 15:29:12 +01003621 },
3622};
3623/* *INDENT-ON* */
3624
3625/* *INDENT-OFF* */
3626VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
3627 .function = lisp_cp_lookup_ip6,
3628 .name = "lisp-cp-lookup-ip6",
Florin Corase127a7e2016-02-18 22:20:01 +01003629 .vector_size = sizeof (u32),
3630 .format_trace = format_lisp_cp_lookup_trace,
3631 .type = VLIB_NODE_TYPE_INTERNAL,
3632
3633 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3634 .error_strings = lisp_cp_lookup_error_strings,
3635
3636 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3637
3638 .next_nodes = {
3639 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
Filip Tehlar05879992017-09-05 15:46:09 +02003640 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
Neale Ranns5e575b12016-10-03 09:40:25 +01003641 },
3642};
3643/* *INDENT-ON* */
3644
3645/* *INDENT-OFF* */
3646VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
3647 .function = lisp_cp_lookup_l2,
3648 .name = "lisp-cp-lookup-l2",
3649 .vector_size = sizeof (u32),
3650 .format_trace = format_lisp_cp_lookup_trace,
3651 .type = VLIB_NODE_TYPE_INTERNAL,
3652
3653 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3654 .error_strings = lisp_cp_lookup_error_strings,
3655
3656 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3657
3658 .next_nodes = {
3659 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
Filip Tehlar05879992017-09-05 15:46:09 +02003660 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
Florin Corase127a7e2016-02-18 22:20:01 +01003661 },
3662};
Florin Corasa2157cf2016-08-16 21:09:14 +02003663/* *INDENT-ON* */
Florin Corase127a7e2016-02-18 22:20:01 +01003664
Florin Corasce1b4c72017-01-26 14:25:34 -08003665/* *INDENT-OFF* */
3666VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
3667 .function = lisp_cp_lookup_nsh,
3668 .name = "lisp-cp-lookup-nsh",
3669 .vector_size = sizeof (u32),
3670 .format_trace = format_lisp_cp_lookup_trace,
3671 .type = VLIB_NODE_TYPE_INTERNAL,
3672
3673 .n_errors = LISP_CP_LOOKUP_N_ERROR,
3674 .error_strings = lisp_cp_lookup_error_strings,
3675
3676 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
3677
3678 .next_nodes = {
3679 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
Filip Tehlar05879992017-09-05 15:46:09 +02003680 [LISP_CP_LOOKUP_NEXT_ARP_NDP_REPLY_TX] = "interface-output",
Florin Corasce1b4c72017-01-26 14:25:34 -08003681 },
3682};
3683/* *INDENT-ON* */
3684
Florin Corase127a7e2016-02-18 22:20:01 +01003685/* lisp_cp_input statistics */
Filip Tehlarcda70662017-01-16 10:30:03 +01003686#define foreach_lisp_cp_input_error \
3687_(DROP, "drop") \
3688_(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
3689_(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
3690_(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
Florin Corase127a7e2016-02-18 22:20:01 +01003691_(MAP_REPLIES_RECEIVED, "map-replies received")
3692
Florin Corasa2157cf2016-08-16 21:09:14 +02003693static char *lisp_cp_input_error_strings[] = {
Florin Corase127a7e2016-02-18 22:20:01 +01003694#define _(sym,string) string,
3695 foreach_lisp_cp_input_error
3696#undef _
3697};
3698
3699typedef enum
3700{
3701#define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
Florin Corasa2157cf2016-08-16 21:09:14 +02003702 foreach_lisp_cp_input_error
Florin Corase127a7e2016-02-18 22:20:01 +01003703#undef _
3704 LISP_CP_INPUT_N_ERROR,
3705} lisp_cp_input_error_t;
3706
Florin Corase127a7e2016-02-18 22:20:01 +01003707typedef struct
3708{
3709 gid_address_t dst_eid;
3710 ip4_address_t map_resolver_ip;
3711} lisp_cp_input_trace_t;
3712
3713u8 *
3714format_lisp_cp_input_trace (u8 * s, va_list * args)
3715{
3716 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
3717 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
Florin Corasa2157cf2016-08-16 21:09:14 +02003718 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
3719 va_arg (*args, lisp_cp_input_trace_t *);
Florin Corase127a7e2016-02-18 22:20:01 +01003720
3721 s = format (s, "LISP-CP-INPUT: TODO");
3722 return s;
3723}
3724
Filip Tehlar9677a942016-11-28 10:23:31 +01003725static void
3726remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3727{
3728 mapping_t *m;
Florin Corasf3dc11a2017-01-24 03:13:43 -08003729 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3730 memset (adj_args, 0, sizeof (adj_args[0]));
Filip Tehlar9677a942016-11-28 10:23:31 +01003731
3732 m = pool_elt_at_index (lcm->mapping_pool, mi);
Florin Corasf3dc11a2017-01-24 03:13:43 -08003733
3734 gid_address_copy (&adj_args->reid, &m->eid);
3735 adj_args->is_add = 0;
3736 if (vnet_lisp_add_del_adjacency (adj_args))
3737 clib_warning ("failed to del adjacency!");
3738
Filip Tehlar809bc742017-08-14 19:15:36 +02003739 vnet_lisp_del_mapping (&m->eid, NULL);
Filip Tehlar9677a942016-11-28 10:23:31 +01003740 mapping_delete_timer (lcm, mi);
3741}
3742
3743static void
3744mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
3745 f64 expiration_time)
3746{
3747 mapping_t *m;
3748 u64 now = clib_cpu_time_now ();
3749 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
3750 u64 exp_clock_time = now + expiration_time * cpu_cps;
3751
3752 m = pool_elt_at_index (lcm->mapping_pool, mi);
3753
3754 m->timer_set = 1;
3755 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
3756}
3757
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003758static void
Filip Tehlar809bc742017-08-14 19:15:36 +02003759process_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
3760{
3761 int rv;
3762 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
3763 mapping_t *m = pool_elt_at_index (lcm->mapping_pool, mi);
3764 uword *fei;
3765 fwd_entry_t *fe;
3766 vlib_counter_t c;
3767 u8 have_stats = 0;
3768
3769 if (m->delete_after_expiration)
3770 {
3771 remove_expired_mapping (lcm, mi);
3772 return;
3773 }
3774
3775 fei = hash_get (lcm->fwd_entry_by_mapping_index, mi);
3776 if (!fei)
3777 return;
3778
3779 fe = pool_elt_at_index (lcm->fwd_entry_pool, fei[0]);
3780
3781 memset (a, 0, sizeof (*a));
3782 a->rmt_eid = fe->reid;
3783 if (fe->is_src_dst)
3784 a->lcl_eid = fe->leid;
3785 a->vni = gid_address_vni (&fe->reid);
3786
3787 rv = vnet_lisp_gpe_get_fwd_stats (a, &c);
3788 if (0 == rv)
3789 have_stats = 1;
3790
3791 if (m->almost_expired)
3792 {
3793 m->almost_expired = 0; /* reset flag */
3794 if (have_stats)
3795 {
3796 if (m->packets != c.packets)
3797 {
3798 /* mapping is in use, re-fetch */
3799 map_request_args_t mr_args;
3800 memset (&mr_args, 0, sizeof (mr_args));
3801 mr_args.seid = fe->leid;
3802 mr_args.deid = fe->reid;
3803
3804 send_map_request_thread_fn (&mr_args);
3805 }
3806 else
3807 remove_expired_mapping (lcm, mi);
3808 }
3809 else
3810 remove_expired_mapping (lcm, mi);
3811 }
3812 else
3813 {
3814 m->almost_expired = 1;
3815 mapping_start_expiration_timer (lcm, mi, TIME_UNTIL_REFETCH_OR_DELETE);
3816
3817 if (have_stats)
3818 /* save counter */
3819 m->packets = c.packets;
3820 else
3821 m->delete_after_expiration = 1;
3822 }
3823}
3824
3825static void
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003826map_records_arg_free (map_records_arg_t * a)
Florin Corase127a7e2016-02-18 22:20:01 +01003827{
Florin Corasacd4c632017-06-15 14:33:48 -07003828 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003829 mapping_t *m;
3830 vec_foreach (m, a->mappings)
3831 {
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003832 vec_free (m->locators);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003833 gid_address_free (&m->eid);
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003834 }
Florin Corasacd4c632017-06-15 14:33:48 -07003835 pool_put (lcm->map_records_args_pool[vlib_get_thread_index ()], a);
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003836}
3837
3838void *
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003839process_map_reply (map_records_arg_t * a)
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003840{
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003841 mapping_t *m;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003842 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3843 u32 dst_map_index = 0;
3844 pending_map_request_t *pmr;
3845 u64 *noncep;
3846 uword *pmr_index;
Filip Tehlar809bc742017-08-14 19:15:36 +02003847 u8 is_changed = 0;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003848
3849 if (a->is_rloc_probe)
3850 goto done;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003851
Florin Corase127a7e2016-02-18 22:20:01 +01003852 /* Check pending requests table and nonce */
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003853 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
Florin Corase127a7e2016-02-18 22:20:01 +01003854 if (!pmr_index)
3855 {
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003856 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003857 goto done;
Florin Corase127a7e2016-02-18 22:20:01 +01003858 }
Florin Corasa2157cf2016-08-16 21:09:14 +02003859 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
Florin Corase127a7e2016-02-18 22:20:01 +01003860
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003861 vec_foreach (m, a->mappings)
3862 {
Filip Tehlar809bc742017-08-14 19:15:36 +02003863 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
3864 memset (m_args, 0, sizeof (m_args[0]));
3865 gid_address_copy (&m_args->eid, &m->eid);
3866 m_args->action = m->action;
3867 m_args->authoritative = m->authoritative;
3868 m_args->ttl = m->ttl;
3869 m_args->is_static = 0;
3870
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003871 /* insert/update mappings cache */
Filip Tehlar809bc742017-08-14 19:15:36 +02003872 vnet_lisp_add_mapping (m_args, m->locators, &dst_map_index, &is_changed);
Florin Corase127a7e2016-02-18 22:20:01 +01003873
Florin Corasba888e42017-01-24 11:38:18 -08003874 if (dst_map_index == (u32) ~ 0)
3875 continue;
3876
Filip Tehlar809bc742017-08-14 19:15:36 +02003877 if (is_changed)
3878 {
3879 /* try to program forwarding only if mapping saved or updated */
3880 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3881 memset (adj_args, 0, sizeof (adj_args[0]));
Florin Corasf3dc11a2017-01-24 03:13:43 -08003882
Filip Tehlar809bc742017-08-14 19:15:36 +02003883 gid_address_copy (&adj_args->leid, &pmr->src);
3884 gid_address_copy (&adj_args->reid, &m->eid);
3885 adj_args->is_add = 1;
3886
3887 if (vnet_lisp_add_del_adjacency (adj_args))
3888 clib_warning ("failed to add adjacency!");
3889 }
Florin Corasf3dc11a2017-01-24 03:13:43 -08003890
Florin Corasba888e42017-01-24 11:38:18 -08003891 if ((u32) ~ 0 != m->ttl)
Filip Tehlar0a62e5a2017-11-02 01:38:49 -07003892 mapping_start_expiration_timer (lcm, dst_map_index,
3893 (m->ttl == 0) ? 0 : MAPPING_TIMEOUT);
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003894 }
Florin Corase127a7e2016-02-18 22:20:01 +01003895
3896 /* remove pending map request entry */
Florin Corasa2157cf2016-08-16 21:09:14 +02003897
3898 /* *INDENT-OFF* */
Florin Corasf4691cd2016-08-15 19:16:32 +02003899 clib_fifo_foreach (noncep, pmr->nonces, ({
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003900 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
Florin Corasf4691cd2016-08-15 19:16:32 +02003901 }));
Florin Corasa2157cf2016-08-16 21:09:14 +02003902 /* *INDENT-ON* */
3903
3904 clib_fifo_free (pmr->nonces);
3905 pool_put (lcm->pending_map_requests_pool, pmr);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003906
3907done:
Florin Corasacd4c632017-06-15 14:33:48 -07003908 a->is_free = 1;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003909 return 0;
Florin Corase127a7e2016-02-18 22:20:01 +01003910}
3911
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003912static int
3913is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3914 lisp_key_type_t key_id, u8 * key)
3915{
3916 u8 *auth_data = 0;
3917 u16 auth_data_len;
3918 int result;
3919
3920 auth_data_len = auth_data_len_by_key_id (key_id);
3921 if ((u16) ~ 0 == auth_data_len)
3922 {
3923 clib_warning ("invalid length for key_id %d!", key_id);
3924 return 0;
3925 }
3926
3927 /* save auth data */
3928 vec_validate (auth_data, auth_data_len - 1);
3929 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3930
3931 /* clear auth data */
3932 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3933
3934 /* get hash of the message */
3935 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3936 (unsigned char *) h, msg_len, NULL, NULL);
3937
3938 result = memcmp (code, auth_data, auth_data_len);
3939
3940 vec_free (auth_data);
3941
3942 return !result;
3943}
3944
3945static void
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003946process_map_notify (map_records_arg_t * a)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003947{
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003948 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003949 uword *pmr_index;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003950
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003951 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003952 if (!pmr_index)
3953 {
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003954 clib_warning ("No pending map-register entry with nonce %lu!",
3955 a->nonce);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003956 return;
3957 }
3958
Florin Corasacd4c632017-06-15 14:33:48 -07003959 a->is_free = 1;
Filip Tehlar7048ff12017-07-27 08:09:14 +02003960 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003961 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
Filip Tehlar7048ff12017-07-27 08:09:14 +02003962
3963 /* reset map-notify counter */
3964 lcm->expired_map_registers = 0;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003965}
3966
3967static mapping_t *
3968get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3969{
3970 u32 mi;
3971
3972 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3973 if (~0 == mi)
3974 {
3975 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3976 e);
3977 return 0;
3978 }
3979 return pool_elt_at_index (lcm->mapping_pool, mi);
3980}
3981
3982/**
3983 * When map-notify is received it is necessary that all EIDs in the record
3984 * list share common key. The key is then used to verify authentication
3985 * data in map-notify message.
3986 */
3987static int
3988map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3989 u32 key_id, u8 ** key_out)
3990{
3991 u32 i, len = vec_len (maps);
3992 mapping_t *m;
3993
3994 /* get key of the first mapping */
3995 m = get_mapping (lcm, &maps[0].eid);
3996 if (!m || !m->key)
3997 return -1;
3998
3999 key_out[0] = m->key;
4000
4001 for (i = 1; i < len; i++)
4002 {
4003 m = get_mapping (lcm, &maps[i].eid);
4004 if (!m || !m->key)
4005 return -1;
4006
4007 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
4008 {
4009 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
4010 return -1;
4011 }
4012 }
4013 return 0;
4014}
4015
4016static int
4017parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
4018{
4019 locator_t *locators = 0;
4020 u32 i, len;
4021 gid_address_t deid;
4022 mapping_t m;
4023 locator_t *loc;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004024
Filip Tehlar68c74fc2017-05-04 14:52:42 +02004025 memset (&m, 0, sizeof (m));
4026
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004027 /* parse record eid */
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004028 for (i = 0; i < count; i++)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004029 {
Florin Corase68de8c2017-06-05 15:38:50 -07004030 locators = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004031 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
4032 if (len == ~0)
4033 {
4034 clib_warning ("Failed to parse mapping record!");
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004035 vec_foreach (loc, locators) locator_free (loc);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004036 vec_free (locators);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004037 return -1;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004038 }
4039
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004040 m.locators = locators;
4041 gid_address_copy (&m.eid, &deid);
4042 vec_add1 (a->mappings, m);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004043 }
4044
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004045 return 0;
4046}
4047
4048static map_records_arg_t *
Florin Corasacd4c632017-06-15 14:33:48 -07004049map_record_args_get ()
4050{
4051 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4052 map_records_arg_t *rec;
4053
4054 /* Cleanup first */
4055 /* *INDENT-OFF* */
4056 pool_foreach (rec, lcm->map_records_args_pool[vlib_get_thread_index()], ({
4057 if (rec->is_free)
4058 map_records_arg_free (rec);
4059 }));
4060 /* *INDENT-ON* */
4061
4062 pool_get (lcm->map_records_args_pool[vlib_get_thread_index ()], rec);
4063 return rec;
4064}
4065
4066static map_records_arg_t *
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004067parse_map_notify (vlib_buffer_t * b)
4068{
4069 int rc = 0;
4070 map_notify_hdr_t *mnotif_hdr;
4071 lisp_key_type_t key_id;
4072 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4073 u8 *key = 0;
4074 gid_address_t deid;
4075 u16 auth_data_len = 0;
4076 u8 record_count;
Florin Corasacd4c632017-06-15 14:33:48 -07004077 map_records_arg_t *a;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004078
Florin Corasacd4c632017-06-15 14:33:48 -07004079 a = map_record_args_get ();
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004080 memset (a, 0, sizeof (*a));
4081 mnotif_hdr = vlib_buffer_get_current (b);
4082 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
4083 memset (&deid, 0, sizeof (deid));
4084
4085 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
4086 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
4087 auth_data_len = auth_data_len_by_key_id (key_id);
4088
4089 /* advance buffer by authentication data */
4090 vlib_buffer_pull (b, auth_data_len);
4091
4092 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
4093 rc = parse_map_records (b, a, record_count);
4094 if (rc != 0)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004095 {
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004096 map_records_arg_free (a);
4097 return 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004098 }
4099
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004100 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
4101 if (rc != 0)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004102 {
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004103 map_records_arg_free (a);
4104 return 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004105 }
4106
4107 /* verify authentication data */
4108 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004109 - (u8 *) mnotif_hdr, key_id, key))
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004110 {
Filip Tehlar7048ff12017-07-27 08:09:14 +02004111 clib_warning ("Map-notify auth data verification failed for nonce "
4112 "0x%lx!", a->nonce);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004113 map_records_arg_free (a);
4114 return 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004115 }
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004116 return a;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004117}
4118
4119static vlib_buffer_t *
4120build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
4121 ip_address_t * dst, u64 nonce, u8 probe_bit,
4122 mapping_t * records, u16 dst_port, u32 * bi_res)
4123{
4124 vlib_buffer_t *b;
4125 u32 bi;
4126 vlib_main_t *vm = lcm->vlib_main;
4127
4128 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
4129 {
4130 clib_warning ("Can't allocate buffer for Map-Register!");
4131 return 0;
4132 }
4133
4134 b = vlib_get_buffer (vm, bi);
4135
4136 /* leave some space for the encap headers */
4137 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
4138
4139 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
4140
4141 /* push outer ip header */
Florin Corasfdbc3822017-07-27 00:34:12 -07004142 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst, 1);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004143
4144 bi_res[0] = bi;
4145 return b;
4146}
4147
4148static int
4149send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
4150 u8 probe_bit, u64 nonce, u16 dst_port,
4151 ip_address_t * probed_loc)
4152{
4153 ip_address_t src;
4154 u32 bi;
4155 vlib_buffer_t *b;
4156 vlib_frame_t *f;
4157 u32 next_index, *to_next;
4158 mapping_t *records = 0, *m;
4159
4160 m = pool_elt_at_index (lcm->mapping_pool, mi);
4161 if (!m)
4162 return -1;
4163
4164 vec_add1 (records, m[0]);
4165 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
4166 memset (&src, 0, sizeof (src));
4167
4168 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
4169 {
Paul Vinciguerrabdc0e6b2018-09-22 05:32:50 -07004170 clib_warning ("can't find interface address for %U", format_ip_address,
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004171 dst);
4172 return -1;
4173 }
4174
4175 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
4176 &bi);
4177 if (!b)
4178 return -1;
4179 free_map_register_records (records);
4180
4181 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
4182 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
4183 ip4_lookup_node.index : ip6_lookup_node.index;
4184
4185 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
4186
4187 /* Enqueue the packet */
4188 to_next = vlib_frame_vector_args (f);
4189 to_next[0] = bi;
4190 f->n_vectors = 1;
4191 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
4192 return 0;
4193}
4194
Filip Tehlarb601f222017-01-02 10:22:56 +01004195static void
4196find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
4197{
Damjan Marion072401e2017-07-13 18:53:27 +02004198 const i32 start = vnet_buffer (b)->l3_hdr_offset;
Filip Tehlarb601f222017-01-02 10:22:56 +01004199 if (start < 0 && start < -sizeof (b->pre_data))
4200 {
4201 *ip_hdr = 0;
4202 return;
4203 }
4204
4205 *ip_hdr = b->data + start;
4206 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
4207 *ip_hdr = 0;
4208}
4209
Florin Corase127a7e2016-02-18 22:20:01 +01004210void
Filip Tehlarcda70662017-01-16 10:30:03 +01004211process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
4212 lisp_cp_main_t * lcm, vlib_buffer_t * b)
Florin Corase127a7e2016-02-18 22:20:01 +01004213{
Filip Tehlarb601f222017-01-02 10:22:56 +01004214 u8 *ip_hdr = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004215 ip_address_t *dst_loc = 0, probed_loc, src_loc;
4216 mapping_t m;
Florin Corasa2157cf2016-08-16 21:09:14 +02004217 map_request_hdr_t *mreq_hdr;
Florin Corase127a7e2016-02-18 22:20:01 +01004218 gid_address_t src, dst;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004219 u64 nonce;
Filip Tehlarcda70662017-01-16 10:30:03 +01004220 u32 i, len = 0, rloc_probe_recv = 0;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004221 gid_address_t *itr_rlocs = 0;
Florin Corase127a7e2016-02-18 22:20:01 +01004222
4223 mreq_hdr = vlib_buffer_get_current (b);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004224 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
Florin Corasa2157cf2016-08-16 21:09:14 +02004225 {
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004226 clib_warning
4227 ("Only SMR Map-Requests and RLOC probe supported for now!");
Florin Corase127a7e2016-02-18 22:20:01 +01004228 return;
Florin Corasa2157cf2016-08-16 21:09:14 +02004229 }
Florin Corase127a7e2016-02-18 22:20:01 +01004230
Filip Tehlarb601f222017-01-02 10:22:56 +01004231 vlib_buffer_pull (b, sizeof (*mreq_hdr));
4232 nonce = MREQ_NONCE (mreq_hdr);
4233
Florin Corase127a7e2016-02-18 22:20:01 +01004234 /* parse src eid */
4235 len = lisp_msg_parse_addr (b, &src);
4236 if (len == ~0)
4237 return;
4238
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004239 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
4240 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
Florin Corase127a7e2016-02-18 22:20:01 +01004241 if (len == ~0)
Filip Tehlarcda70662017-01-16 10:30:03 +01004242 goto done;
Florin Corase127a7e2016-02-18 22:20:01 +01004243
4244 /* parse eid records and send SMR-invoked map-requests */
Florin Corasa2157cf2016-08-16 21:09:14 +02004245 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
Florin Corase127a7e2016-02-18 22:20:01 +01004246 {
Florin Corasa2157cf2016-08-16 21:09:14 +02004247 memset (&dst, 0, sizeof (dst));
Florin Corase127a7e2016-02-18 22:20:01 +01004248 len = lisp_msg_parse_eid_rec (b, &dst);
4249 if (len == ~0)
Florin Corasa2157cf2016-08-16 21:09:14 +02004250 {
4251 clib_warning ("Can't parse map-request EID-record");
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004252 goto done;
Florin Corasa2157cf2016-08-16 21:09:14 +02004253 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004254
4255 if (MREQ_SMR (mreq_hdr))
4256 {
4257 /* send SMR-invoked map-requests */
4258 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
4259 }
4260 else if (MREQ_RLOC_PROBE (mreq_hdr))
4261 {
Filip Tehlarb601f222017-01-02 10:22:56 +01004262 find_ip_header (b, &ip_hdr);
4263 if (!ip_hdr)
4264 {
4265 clib_warning ("Cannot find the IP header!");
Filip Tehlarcda70662017-01-16 10:30:03 +01004266 goto done;
Filip Tehlarb601f222017-01-02 10:22:56 +01004267 }
Filip Tehlarcda70662017-01-16 10:30:03 +01004268 rloc_probe_recv++;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004269 memset (&m, 0, sizeof (m));
4270 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
4271
4272 // TODO: select best locator; for now use the first one
4273 dst_loc = &gid_address_ip (&itr_rlocs[0]);
4274
4275 /* get src/dst IP addresses */
4276 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
4277
4278 // TODO get source port from buffer
4279 u16 src_port = LISP_CONTROL_PORT;
4280
4281 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
4282 src_port, &probed_loc);
4283 }
Florin Corase127a7e2016-02-18 22:20:01 +01004284 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004285
4286done:
Filip Tehlarcda70662017-01-16 10:30:03 +01004287 vlib_node_increment_counter (vm, node->node_index,
4288 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
4289 rloc_probe_recv);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004290 vec_free (itr_rlocs);
Florin Corase127a7e2016-02-18 22:20:01 +01004291}
4292
Filip Tehlar816f4372017-04-26 16:09:06 +02004293map_records_arg_t *
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01004294parse_map_reply (vlib_buffer_t * b)
4295{
4296 locator_t probed;
4297 gid_address_t deid;
4298 void *h;
4299 u32 i, len = 0;
4300 mapping_t m;
4301 map_reply_hdr_t *mrep_hdr;
Florin Corasacd4c632017-06-15 14:33:48 -07004302 map_records_arg_t *a;
4303
4304 a = map_record_args_get ();
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01004305 memset (a, 0, sizeof (*a));
Florin Corasacd4c632017-06-15 14:33:48 -07004306
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01004307 locator_t *locators;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004308
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01004309 mrep_hdr = vlib_buffer_get_current (b);
4310 a->nonce = MREP_NONCE (mrep_hdr);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004311 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
Filip Tehlar816f4372017-04-26 16:09:06 +02004312 if (!vlib_buffer_has_space (b, sizeof (*mrep_hdr)))
4313 {
4314 clib_mem_free (a);
4315 return 0;
4316 }
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01004317 vlib_buffer_pull (b, sizeof (*mrep_hdr));
4318
4319 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
4320 {
4321 memset (&m, 0, sizeof (m));
4322 locators = 0;
4323 h = vlib_buffer_get_current (b);
4324
4325 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
4326 m.action = MAP_REC_ACTION (h);
4327 m.authoritative = MAP_REC_AUTH (h);
4328
4329 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
4330 if (len == ~0)
4331 {
4332 clib_warning ("Failed to parse mapping record!");
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004333 map_records_arg_free (a);
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01004334 return 0;
4335 }
4336
4337 m.locators = locators;
4338 gid_address_copy (&m.eid, &deid);
4339 vec_add1 (a->mappings, m);
4340 }
4341 return a;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004342}
4343
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004344static void
4345queue_map_reply_for_processing (map_records_arg_t * a)
4346{
Florin Coras655fcc42017-01-10 08:57:54 -08004347 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004348}
4349
4350static void
4351queue_map_notify_for_processing (map_records_arg_t * a)
4352{
4353 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
4354}
4355
Florin Corase127a7e2016-02-18 22:20:01 +01004356static uword
4357lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
Florin Corasa2157cf2016-08-16 21:09:14 +02004358 vlib_frame_t * from_frame)
Florin Corase127a7e2016-02-18 22:20:01 +01004359{
Filip Tehlarcda70662017-01-16 10:30:03 +01004360 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
4361 map_notifies_recv = 0;
Florin Corase127a7e2016-02-18 22:20:01 +01004362 lisp_msg_type_e type;
Florin Corasa2157cf2016-08-16 21:09:14 +02004363 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004364 map_records_arg_t *a;
Florin Corase127a7e2016-02-18 22:20:01 +01004365
4366 from = vlib_frame_vector_args (from_frame);
4367 n_left_from = from_frame->n_vectors;
4368
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004369
Florin Corase127a7e2016-02-18 22:20:01 +01004370 while (n_left_from > 0)
4371 {
4372 u32 n_left_to_next_drop;
4373
4374 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
Florin Corasa2157cf2016-08-16 21:09:14 +02004375 to_next_drop, n_left_to_next_drop);
Florin Corase127a7e2016-02-18 22:20:01 +01004376 while (n_left_from > 0 && n_left_to_next_drop > 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02004377 {
4378 u32 bi0;
4379 vlib_buffer_t *b0;
Florin Corase127a7e2016-02-18 22:20:01 +01004380
Florin Corasa2157cf2016-08-16 21:09:14 +02004381 bi0 = from[0];
4382 from += 1;
4383 n_left_from -= 1;
4384 to_next_drop[0] = bi0;
4385 to_next_drop += 1;
4386 n_left_to_next_drop -= 1;
Florin Corase127a7e2016-02-18 22:20:01 +01004387
Florin Corasa2157cf2016-08-16 21:09:14 +02004388 b0 = vlib_get_buffer (vm, bi0);
Florin Corase127a7e2016-02-18 22:20:01 +01004389
Florin Corasa2157cf2016-08-16 21:09:14 +02004390 type = lisp_msg_type (vlib_buffer_get_current (b0));
4391 switch (type)
4392 {
4393 case LISP_MAP_REPLY:
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01004394 a = parse_map_reply (b0);
4395 if (a)
Filip Tehlarcda70662017-01-16 10:30:03 +01004396 {
4397 if (a->is_rloc_probe)
4398 rloc_probe_rep_recv++;
4399 queue_map_reply_for_processing (a);
4400 }
Florin Corasa2157cf2016-08-16 21:09:14 +02004401 break;
4402 case LISP_MAP_REQUEST:
Filip Tehlarcda70662017-01-16 10:30:03 +01004403 process_map_request (vm, node, lcm, b0);
Florin Corasa2157cf2016-08-16 21:09:14 +02004404 break;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004405 case LISP_MAP_NOTIFY:
Filip Tehlarfb9931f2016-12-09 13:52:38 +01004406 a = parse_map_notify (b0);
4407 if (a)
Filip Tehlarcda70662017-01-16 10:30:03 +01004408 {
4409 map_notifies_recv++;
4410 queue_map_notify_for_processing (a);
4411 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004412 break;
Florin Corasa2157cf2016-08-16 21:09:14 +02004413 default:
4414 clib_warning ("Unsupported LISP message type %d", type);
4415 break;
4416 }
Florin Corase127a7e2016-02-18 22:20:01 +01004417
Florin Corasa2157cf2016-08-16 21:09:14 +02004418 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
Florin Corase127a7e2016-02-18 22:20:01 +01004419
Florin Corasa2157cf2016-08-16 21:09:14 +02004420 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
4421 {
Florin Corase127a7e2016-02-18 22:20:01 +01004422
Florin Corasa2157cf2016-08-16 21:09:14 +02004423 }
4424 }
Florin Corase127a7e2016-02-18 22:20:01 +01004425
Florin Corasa2157cf2016-08-16 21:09:14 +02004426 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
4427 n_left_to_next_drop);
Florin Corase127a7e2016-02-18 22:20:01 +01004428 }
Filip Tehlarcda70662017-01-16 10:30:03 +01004429 vlib_node_increment_counter (vm, node->node_index,
4430 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
4431 rloc_probe_rep_recv);
4432 vlib_node_increment_counter (vm, node->node_index,
4433 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
4434 map_notifies_recv);
Florin Corase127a7e2016-02-18 22:20:01 +01004435 return from_frame->n_vectors;
4436}
4437
Florin Corasa2157cf2016-08-16 21:09:14 +02004438/* *INDENT-OFF* */
Florin Corase127a7e2016-02-18 22:20:01 +01004439VLIB_REGISTER_NODE (lisp_cp_input_node) = {
4440 .function = lisp_cp_input,
4441 .name = "lisp-cp-input",
4442 .vector_size = sizeof (u32),
4443 .format_trace = format_lisp_cp_input_trace,
4444 .type = VLIB_NODE_TYPE_INTERNAL,
4445
4446 .n_errors = LISP_CP_INPUT_N_ERROR,
4447 .error_strings = lisp_cp_input_error_strings,
4448
4449 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
4450
4451 .next_nodes = {
4452 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
4453 },
4454};
Florin Corasa2157cf2016-08-16 21:09:14 +02004455/* *INDENT-ON* */
Florin Corase127a7e2016-02-18 22:20:01 +01004456
4457clib_error_t *
Florin Corasa2157cf2016-08-16 21:09:14 +02004458lisp_cp_init (vlib_main_t * vm)
Florin Corase127a7e2016-02-18 22:20:01 +01004459{
Florin Corasa2157cf2016-08-16 21:09:14 +02004460 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4461 clib_error_t *error = 0;
Florin Corasacd4c632017-06-15 14:33:48 -07004462 vlib_thread_main_t *vtm = vlib_get_thread_main ();
4463 u32 num_threads;
Florin Corase127a7e2016-02-18 22:20:01 +01004464
4465 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
4466 return error;
4467
4468 lcm->im4 = &ip4_main;
4469 lcm->im6 = &ip6_main;
4470 lcm->vlib_main = vm;
Florin Corasa2157cf2016-08-16 21:09:14 +02004471 lcm->vnet_main = vnet_get_main ();
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02004472 lcm->mreq_itr_rlocs = ~0;
Florin Corasba888e42017-01-24 11:38:18 -08004473 lcm->flags = 0;
Filip Tehlar0a8840d2017-10-16 05:48:23 -07004474 lcm->pitr_map_index = ~0;
4475 lcm->petr_map_index = ~0;
Florin Coras5a1c11b2016-09-06 16:29:34 +02004476 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
Filip Tehlar7048ff12017-07-27 08:09:14 +02004477 memset (&lcm->active_map_server, 0, sizeof (lcm->active_map_server));
Florin Corase127a7e2016-02-18 22:20:01 +01004478
4479 gid_dictionary_init (&lcm->mapping_index_by_gid);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004480 lcm->do_map_resolver_election = 1;
Filip Tehlar7048ff12017-07-27 08:09:14 +02004481 lcm->do_map_server_election = 1;
Florin Corasdca88042016-09-14 16:01:38 +02004482 lcm->map_request_mode = MR_MODE_DST_ONLY;
Florin Corase127a7e2016-02-18 22:20:01 +01004483
Florin Corasacd4c632017-06-15 14:33:48 -07004484 num_threads = 1 /* main thread */ + vtm->n_threads;
4485 vec_validate (lcm->map_records_args_pool, num_threads - 1);
4486
Florin Coras577c3552016-04-21 00:45:40 +02004487 /* default vrf mapped to vni 0 */
Florin Corasa2157cf2016-08-16 21:09:14 +02004488 hash_set (lcm->table_id_by_vni, 0, 0);
4489 hash_set (lcm->vni_by_table_id, 0, 0);
Florin Coras577c3552016-04-21 00:45:40 +02004490
Filip Tehlar0a8840d2017-10-16 05:48:23 -07004491 lisp_cp_register_dst_port (vm);
Florin Corase127a7e2016-02-18 22:20:01 +01004492
Filip Tehlar9677a942016-11-28 10:23:31 +01004493 u64 now = clib_cpu_time_now ();
4494 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
Filip Tehlaref2a5bf2017-05-30 07:14:46 +02004495 lcm->nsh_map_index = ~0;
Filip Tehlar1e553a02017-08-02 12:45:07 +02004496 lcm->map_register_ttl = MAP_REGISTER_DEFAULT_TTL;
Filip Tehlar7048ff12017-07-27 08:09:14 +02004497 lcm->max_expired_map_registers = MAX_EXPIRED_MAP_REGISTERS_DEFAULT;
4498 lcm->expired_map_registers = 0;
Filip Tehlara4980b82017-09-27 14:32:02 +02004499 lcm->transport_protocol = LISP_TRANSPORT_PROTOCOL_UDP;
Filip Tehlar0a8840d2017-10-16 05:48:23 -07004500 lcm->flags |= LISP_FLAG_XTR_MODE;
Florin Corase127a7e2016-02-18 22:20:01 +01004501 return 0;
4502}
4503
Filip Tehlar4868ff62017-03-09 16:48:39 +01004504static int
4505lisp_stats_api_fill (lisp_cp_main_t * lcm, lisp_gpe_main_t * lgm,
4506 lisp_api_stats_t * stat, lisp_stats_key_t * key,
4507 u32 stats_index)
4508{
Filip Tehlar21511912017-04-07 10:41:42 +02004509 vlib_counter_t v;
4510 vlib_combined_counter_main_t *cm = &lgm->counters;
Filip Tehlar4868ff62017-03-09 16:48:39 +01004511 lisp_gpe_fwd_entry_key_t fwd_key;
4512 const lisp_gpe_tunnel_t *lgt;
4513 fwd_entry_t *fe;
4514
4515 memset (stat, 0, sizeof (*stat));
4516 memset (&fwd_key, 0, sizeof (fwd_key));
4517
4518 fe = pool_elt_at_index (lcm->fwd_entry_pool, key->fwd_entry_index);
4519 ASSERT (fe != 0);
4520
4521 gid_to_dp_address (&fe->reid, &stat->deid);
4522 gid_to_dp_address (&fe->leid, &stat->seid);
4523 stat->vni = gid_address_vni (&fe->reid);
4524
4525 lgt = lisp_gpe_tunnel_get (key->tunnel_index);
4526 stat->loc_rloc = lgt->key->lcl;
4527 stat->rmt_rloc = lgt->key->rmt;
4528
Filip Tehlar21511912017-04-07 10:41:42 +02004529 vlib_get_combined_counter (cm, stats_index, &v);
4530 stat->counters = v;
Filip Tehlar4868ff62017-03-09 16:48:39 +01004531 return 1;
4532}
4533
4534lisp_api_stats_t *
4535vnet_lisp_get_stats (void)
4536{
4537 lisp_gpe_main_t *lgm = vnet_lisp_gpe_get_main ();
4538 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4539 lisp_api_stats_t *stats = 0, stat;
4540 lisp_stats_key_t *key;
4541 u32 index;
4542
4543 /* *INDENT-OFF* */
4544 hash_foreach_mem (key, index, lgm->lisp_stats_index_by_key,
4545 {
4546 if (lisp_stats_api_fill (lcm, lgm, &stat, key, index))
4547 vec_add1 (stats, stat);
4548 });
4549 /* *INDENT-ON* */
4550
4551 return stats;
4552}
4553
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004554static void *
Florin Corasa2157cf2016-08-16 21:09:14 +02004555send_map_request_thread_fn (void *arg)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004556{
Florin Corasa2157cf2016-08-16 21:09:14 +02004557 map_request_args_t *a = arg;
4558 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004559
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004560 if (a->is_resend)
4561 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
4562 else
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01004563 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004564
4565 return 0;
4566}
4567
4568static int
4569queue_map_request (gid_address_t * seid, gid_address_t * deid,
Florin Corasa2157cf2016-08-16 21:09:14 +02004570 u8 smr_invoked, u8 is_resend)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004571{
4572 map_request_args_t a;
4573
4574 a.is_resend = is_resend;
4575 gid_address_copy (&a.seid, seid);
4576 gid_address_copy (&a.deid, deid);
4577 a.smr_invoked = smr_invoked;
4578
4579 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
Florin Corasa2157cf2016-08-16 21:09:14 +02004580 (u8 *) & a, sizeof (a));
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004581 return 0;
4582}
4583
4584/**
4585 * Take an action with a pending map request depending on expiration time
4586 * and re-try counters.
4587 */
4588static void
4589update_pending_request (pending_map_request_t * r, f64 dt)
4590{
Florin Corasa2157cf2016-08-16 21:09:14 +02004591 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004592 lisp_msmr_t *mr;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004593
4594 if (r->time_to_expire - dt < 0)
4595 /* it's time to decide what to do with this pending request */
4596 {
4597 if (r->retries_num >= NUMBER_OF_RETRIES)
Florin Corasa2157cf2016-08-16 21:09:14 +02004598 /* too many retries -> assume current map resolver is not available */
4599 {
4600 mr = get_map_resolver (&lcm->active_map_resolver);
4601 if (!mr)
4602 {
4603 clib_warning ("Map resolver %U not found - probably deleted "
4604 "by the user recently.", format_ip_address,
4605 &lcm->active_map_resolver);
4606 }
4607 else
4608 {
4609 clib_warning ("map resolver %U is unreachable, ignoring",
4610 format_ip_address, &lcm->active_map_resolver);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004611
Florin Corasa2157cf2016-08-16 21:09:14 +02004612 /* mark current map resolver unavailable so it won't be
4613 * selected next time */
4614 mr->is_down = 1;
4615 mr->last_update = vlib_time_now (lcm->vlib_main);
4616 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004617
Florin Corasa2157cf2016-08-16 21:09:14 +02004618 reset_pending_mr_counters (r);
4619 elect_map_resolver (lcm);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004620
Florin Corasa2157cf2016-08-16 21:09:14 +02004621 /* try to find a next eligible map resolver and re-send */
4622 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4623 1 /* resend */ );
4624 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004625 else
Florin Corasa2157cf2016-08-16 21:09:14 +02004626 {
4627 /* try again */
4628 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
4629 1 /* resend */ );
4630 r->retries_num++;
4631 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
4632 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004633 }
4634 else
4635 r->time_to_expire -= dt;
4636}
4637
4638static void
4639remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
4640{
Florin Corasa2157cf2016-08-16 21:09:14 +02004641 u64 *nonce;
4642 pending_map_request_t *pmr;
4643 u32 *to_be_removed = 0, *pmr_index;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004644
Florin Corasa2157cf2016-08-16 21:09:14 +02004645 /* *INDENT-OFF* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004646 pool_foreach (pmr, lcm->pending_map_requests_pool,
Florin Corasa2157cf2016-08-16 21:09:14 +02004647 ({
4648 if (pmr->to_be_removed)
4649 {
4650 clib_fifo_foreach (nonce, pmr->nonces, ({
4651 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
4652 }));
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004653
Florin Corasa2157cf2016-08-16 21:09:14 +02004654 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
4655 }
4656 }));
4657 /* *INDENT-ON* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004658
4659 vec_foreach (pmr_index, to_be_removed)
Filip Tehlar7048ff12017-07-27 08:09:14 +02004660 pool_put_index (lcm->pending_map_requests_pool, pmr_index[0]);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004661
4662 vec_free (to_be_removed);
4663}
4664
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004665static void
4666update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
4667{
4668 static f64 time_left = RLOC_PROBING_INTERVAL;
4669
4670 if (!lcm->is_enabled || !lcm->rloc_probing)
4671 return;
4672
4673 time_left -= dt;
4674 if (time_left <= 0)
4675 {
4676 time_left = RLOC_PROBING_INTERVAL;
4677 send_rloc_probes (lcm);
4678 }
4679}
4680
Filip Tehlar7048ff12017-07-27 08:09:14 +02004681static int
4682update_pending_map_register (pending_map_register_t * r, f64 dt, u8 * del_all)
4683{
4684 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4685 lisp_msmr_t *ms;
4686 del_all[0] = 0;
4687
4688 r->time_to_expire -= dt;
4689
4690 if (r->time_to_expire < 0)
4691 {
4692 lcm->expired_map_registers++;
4693
4694 if (lcm->expired_map_registers >= lcm->max_expired_map_registers)
4695 {
4696 ms = get_map_server (&lcm->active_map_server);
4697 if (!ms)
4698 {
4699 clib_warning ("Map server %U not found - probably deleted "
4700 "by the user recently.", format_ip_address,
4701 &lcm->active_map_server);
4702 }
4703 else
4704 {
4705 clib_warning ("map server %U is unreachable, ignoring",
4706 format_ip_address, &lcm->active_map_server);
4707
4708 /* mark current map server unavailable so it won't be
4709 * elected next time */
4710 ms->is_down = 1;
4711 ms->last_update = vlib_time_now (lcm->vlib_main);
4712 }
4713
4714 elect_map_server (lcm);
4715
4716 /* indication for deleting all pending map registers */
4717 del_all[0] = 1;
4718 lcm->expired_map_registers = 0;
4719 return 0;
4720 }
4721 else
4722 {
4723 /* delete pending map register */
4724 return 0;
4725 }
4726 }
4727 return 1;
4728}
4729
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004730static void
4731update_map_register (lisp_cp_main_t * lcm, f64 dt)
4732{
Filip Tehlar7048ff12017-07-27 08:09:14 +02004733 u32 *to_be_removed = 0, *pmr_index;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004734 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
4735 static u64 mreg_sent_counter = 0;
4736
Filip Tehlar7048ff12017-07-27 08:09:14 +02004737 pending_map_register_t *pmr;
4738 u8 del_all = 0;
4739
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004740 if (!lcm->is_enabled || !lcm->map_registering)
4741 return;
4742
Filip Tehlar7048ff12017-07-27 08:09:14 +02004743 /* *INDENT-OFF* */
4744 pool_foreach (pmr, lcm->pending_map_registers_pool,
4745 ({
4746 if (!update_pending_map_register (pmr, dt, &del_all))
4747 {
4748 if (del_all)
4749 break;
4750 vec_add1 (to_be_removed, pmr - lcm->pending_map_registers_pool);
4751 }
4752 }));
4753 /* *INDENT-ON* */
4754
4755 if (del_all)
4756 {
4757 /* delete all pending map register messages so they won't
4758 * trigger another map server election.. */
4759 pool_free (lcm->pending_map_registers_pool);
4760 hash_free (lcm->map_register_messages_by_nonce);
4761
4762 /* ..and trigger registration against next map server (if any) */
4763 time_left = 0;
4764 }
4765 else
4766 {
4767 vec_foreach (pmr_index, to_be_removed)
4768 pool_put_index (lcm->pending_map_registers_pool, pmr_index[0]);
4769 }
4770
4771 vec_free (to_be_removed);
4772
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004773 time_left -= dt;
4774 if (time_left <= 0)
4775 {
4776 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
4777 time_left = MAP_REGISTER_INTERVAL;
4778 else
4779 {
4780 mreg_sent_counter++;
4781 time_left = QUICK_MAP_REGISTER_INTERVAL;
4782 }
4783 send_map_register (lcm, 1 /* want map notify */ );
4784 }
4785}
4786
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004787static uword
4788send_map_resolver_service (vlib_main_t * vm,
Florin Corasa2157cf2016-08-16 21:09:14 +02004789 vlib_node_runtime_t * rt, vlib_frame_t * f)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004790{
Filip Tehlar9677a942016-11-28 10:23:31 +01004791 u32 *expired = 0;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004792 f64 period = 2.0;
Florin Corasa2157cf2016-08-16 21:09:14 +02004793 pending_map_request_t *pmr;
4794 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004795
4796 while (1)
4797 {
4798 vlib_process_wait_for_event_or_clock (vm, period);
4799
4800 /* currently no signals are expected - just wait for clock */
4801 (void) vlib_process_get_events (vm, 0);
4802
Florin Corasa2157cf2016-08-16 21:09:14 +02004803 /* *INDENT-OFF* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004804 pool_foreach (pmr, lcm->pending_map_requests_pool,
Florin Corasa2157cf2016-08-16 21:09:14 +02004805 ({
4806 if (!pmr->to_be_removed)
4807 update_pending_request (pmr, period);
4808 }));
4809 /* *INDENT-ON* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004810
4811 remove_dead_pending_map_requests (lcm);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02004812
4813 update_map_register (lcm, period);
4814 update_rloc_probing (lcm, period);
Filip Tehlar9677a942016-11-28 10:23:31 +01004815
4816 u64 now = clib_cpu_time_now ();
4817
4818 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
4819 if (vec_len (expired) > 0)
4820 {
4821 u32 *mi = 0;
4822 vec_foreach (mi, expired)
4823 {
Filip Tehlar809bc742017-08-14 19:15:36 +02004824 process_expired_mapping (lcm, mi[0]);
Filip Tehlar9677a942016-11-28 10:23:31 +01004825 }
4826 _vec_len (expired) = 0;
4827 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004828 }
4829
4830 /* unreachable */
4831 return 0;
4832}
4833
Filip Tehlar7eaf0e52017-03-08 08:46:51 +01004834vnet_api_error_t
4835vnet_lisp_stats_enable_disable (u8 enable)
4836{
4837 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4838
4839 if (vnet_lisp_enable_disable_status () == 0)
4840 return VNET_API_ERROR_LISP_DISABLED;
4841
Filip Tehlar4868ff62017-03-09 16:48:39 +01004842 if (enable)
4843 lcm->flags |= LISP_FLAG_STATS_ENABLED;
4844 else
4845 lcm->flags &= ~LISP_FLAG_STATS_ENABLED;
4846
Filip Tehlar7eaf0e52017-03-08 08:46:51 +01004847 return 0;
4848}
4849
4850u8
4851vnet_lisp_stats_enable_disable_state (void)
4852{
4853 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4854
4855 if (vnet_lisp_enable_disable_status () == 0)
4856 return VNET_API_ERROR_LISP_DISABLED;
4857
Filip Tehlar4868ff62017-03-09 16:48:39 +01004858 return lcm->flags & LISP_FLAG_STATS_ENABLED;
Filip Tehlar7eaf0e52017-03-08 08:46:51 +01004859}
4860
Florin Corasa2157cf2016-08-16 21:09:14 +02004861/* *INDENT-OFF* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004862VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
4863 .function = send_map_resolver_service,
4864 .type = VLIB_NODE_TYPE_PROCESS,
4865 .name = "lisp-retry-service",
4866 .process_log2_n_stack_bytes = 16,
4867};
Florin Corasa2157cf2016-08-16 21:09:14 +02004868/* *INDENT-ON* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02004869
Filip Tehlara4980b82017-09-27 14:32:02 +02004870u32
4871vnet_lisp_set_transport_protocol (u8 protocol)
4872{
4873 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4874
4875 if (protocol < LISP_TRANSPORT_PROTOCOL_UDP ||
4876 protocol > LISP_TRANSPORT_PROTOCOL_API)
4877 return VNET_API_ERROR_INVALID_ARGUMENT;
4878
4879 lcm->transport_protocol = protocol;
4880 return 0;
4881}
4882
4883lisp_transport_protocol_t
4884vnet_lisp_get_transport_protocol (void)
4885{
4886 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4887 return lcm->transport_protocol;
4888}
4889
Filip Tehlar0a8840d2017-10-16 05:48:23 -07004890int
4891vnet_lisp_enable_disable_xtr_mode (u8 is_enabled)
4892{
4893 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4894 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
4895 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4896 u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;
4897
4898 if (pitr_mode && is_enabled)
4899 return VNET_API_ERROR_INVALID_ARGUMENT;
4900
4901 if (is_enabled && xtr_mode)
4902 return 0;
4903 if (!is_enabled && !xtr_mode)
4904 return 0;
4905
4906 if (is_enabled)
4907 {
4908 if (!petr_mode)
4909 {
4910 lisp_cp_register_dst_port (lcm->vlib_main);
4911 }
4912 lisp_cp_enable_l2_l3_ifaces (lcm, 1 /* with_default_route */ );
4913 lcm->flags |= LISP_FLAG_XTR_MODE;
4914 }
4915 else
4916 {
4917 if (!petr_mode)
4918 {
4919 lisp_cp_unregister_dst_port (lcm->vlib_main);
4920 }
4921 lisp_cp_disable_l2_l3_ifaces (lcm);
4922 lcm->flags &= ~LISP_FLAG_XTR_MODE;
4923 }
4924 return 0;
4925}
4926
4927int
4928vnet_lisp_enable_disable_pitr_mode (u8 is_enabled)
4929{
4930 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4931 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4932 u8 pitr_mode = lcm->flags & LISP_FLAG_PITR_MODE;
4933
4934 if (xtr_mode && is_enabled)
4935 return VNET_API_ERROR_INVALID_VALUE;
4936
4937 if (is_enabled && pitr_mode)
4938 return 0;
4939 if (!is_enabled && !pitr_mode)
4940 return 0;
4941
4942 if (is_enabled)
4943 {
4944 /* create iface, no default route */
4945 lisp_cp_enable_l2_l3_ifaces (lcm, 0 /* with_default_route */ );
4946 lcm->flags |= LISP_FLAG_PITR_MODE;
4947 }
4948 else
4949 {
4950 lisp_cp_disable_l2_l3_ifaces (lcm);
4951 lcm->flags &= ~LISP_FLAG_PITR_MODE;
4952 }
4953 return 0;
4954}
4955
4956int
4957vnet_lisp_enable_disable_petr_mode (u8 is_enabled)
4958{
4959 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4960 u8 xtr_mode = lcm->flags & LISP_FLAG_XTR_MODE;
4961 u8 petr_mode = lcm->flags & LISP_FLAG_PETR_MODE;
4962
4963 if (is_enabled && petr_mode)
4964 return 0;
4965 if (!is_enabled && !petr_mode)
4966 return 0;
4967
4968 if (is_enabled)
4969 {
4970 if (!xtr_mode)
4971 {
4972 lisp_cp_register_dst_port (lcm->vlib_main);
4973 }
4974 lcm->flags |= LISP_FLAG_PETR_MODE;
4975 }
4976 else
4977 {
4978 if (!xtr_mode)
4979 {
4980 lisp_cp_unregister_dst_port (lcm->vlib_main);
4981 }
4982 lcm->flags &= ~LISP_FLAG_PETR_MODE;
4983 }
4984 return 0;
4985}
4986
4987u8
4988vnet_lisp_get_xtr_mode (void)
4989{
4990 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4991 return (lcm->flags & LISP_FLAG_XTR_MODE);
4992}
4993
4994u8
4995vnet_lisp_get_pitr_mode (void)
4996{
4997 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
4998 return (lcm->flags & LISP_FLAG_PITR_MODE);
4999}
5000
5001u8
5002vnet_lisp_get_petr_mode (void)
5003{
5004 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
5005 return (lcm->flags & LISP_FLAG_PETR_MODE);
5006}
5007
Florin Corasa2157cf2016-08-16 21:09:14 +02005008VLIB_INIT_FUNCTION (lisp_cp_init);
5009
5010/*
5011 * fd.io coding-style-patch-verification: ON
5012 *
5013 * Local Variables:
5014 * eval: (c-set-style "gnu")
5015 * End:
5016 */