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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>
Neale Ranns0bfe5d82016-08-25 15:29:12 +010022#include <vnet/fib/fib_entry.h>
23#include <vnet/fib/fib_table.h>
Florin Corase127a7e2016-02-18 22:20:01 +010024
Filip Tehlar397fd7d2016-10-26 14:31:24 +020025#include <openssl/evp.h>
26#include <openssl/hmac.h>
27
Florin Corasf3dc11a2017-01-24 03:13:43 -080028lisp_cp_main_t lisp_control_main;
29
Filip Tehlarcda70662017-01-16 10:30:03 +010030u8 *format_lisp_cp_input_trace (u8 * s, va_list * args);
31
32typedef enum
33{
34 LISP_CP_INPUT_NEXT_DROP,
35 LISP_CP_INPUT_N_NEXT,
36} lisp_cp_input_next_t;
37
Filip Tehlara5abdeb2016-07-18 17:35:40 +020038typedef struct
39{
40 u8 is_resend;
41 gid_address_t seid;
42 gid_address_t deid;
43 u8 smr_invoked;
44} map_request_args_t;
45
Filip Tehlarcdab4bd2016-12-06 10:31:57 +010046typedef struct
47{
Filip Tehlarcdab4bd2016-12-06 10:31:57 +010048 u64 nonce;
Filip Tehlarfb9931f2016-12-09 13:52:38 +010049 u8 is_rloc_probe;
50 mapping_t *mappings;
51} map_records_arg_t;
52
Florin Corasdca88042016-09-14 16:01:38 +020053u8
54vnet_lisp_get_map_request_mode (void)
55{
56 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
57 return lcm->map_request_mode;
58}
59
Filip Tehlar397fd7d2016-10-26 14:31:24 +020060static u16
61auth_data_len_by_key_id (lisp_key_type_t key_id)
62{
63 switch (key_id)
64 {
65 case HMAC_SHA_1_96:
66 return SHA1_AUTH_DATA_LEN;
67 case HMAC_SHA_256_128:
68 return SHA256_AUTH_DATA_LEN;
69 default:
70 clib_warning ("unsupported key type: %d!", key_id);
71 return (u16) ~ 0;
72 }
73 return (u16) ~ 0;
74}
75
76static const EVP_MD *
77get_encrypt_fcn (lisp_key_type_t key_id)
78{
79 switch (key_id)
80 {
81 case HMAC_SHA_1_96:
82 return EVP_sha1 ();
83 case HMAC_SHA_256_128:
84 return EVP_sha256 ();
85 default:
86 clib_warning ("unsupported encryption key type: %d!", key_id);
87 break;
88 }
89 return 0;
90}
91
Filip Tehlara5abdeb2016-07-18 17:35:40 +020092static int
93queue_map_request (gid_address_t * seid, gid_address_t * deid,
Florin Corasa2157cf2016-08-16 21:09:14 +020094 u8 smr_invoked, u8 is_resend);
Filip Tehlara5abdeb2016-07-18 17:35:40 +020095
Florin Corasf727db92016-06-23 15:01:58 +020096ip_interface_address_t *
Florin Corasa2157cf2016-08-16 21:09:14 +020097ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
98 u32 sw_if_index, u8 loop)
Florin Corasf727db92016-06-23 15:01:58 +020099{
100 vnet_main_t *vnm = vnet_get_main ();
Florin Corasa2157cf2016-08-16 21:09:14 +0200101 vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
Florin Corasf727db92016-06-23 15:01:58 +0200102 if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
103 sw_if_index = swif->unnumbered_sw_if_index;
104 u32 ia =
Florin Corasa2157cf2016-08-16 21:09:14 +0200105 (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
106 vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
107 (u32) ~ 0;
108 return pool_elt_at_index ((lm)->if_address_pool, ia);
Florin Corasf727db92016-06-23 15:01:58 +0200109}
Filip Tehlar215104e2016-05-10 16:58:29 +0200110
Florin Corasf727db92016-06-23 15:01:58 +0200111void *
112ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
Florin Corasa2157cf2016-08-16 21:09:14 +0200113 u8 version)
Florin Corasf727db92016-06-23 15:01:58 +0200114{
Florin Corasa2157cf2016-08-16 21:09:14 +0200115 ip_interface_address_t *ia;
Filip Tehlar195bcee2016-05-13 17:37:35 +0200116
Florin Corasf727db92016-06-23 15:01:58 +0200117 ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
118 if (!ia)
119 return 0;
120 return ip_interface_address_get_address (lm, ia);
121}
Filip Tehlar195bcee2016-05-13 17:37:35 +0200122
Florin Corase127a7e2016-02-18 22:20:01 +0100123int
Florin Corasf727db92016-06-23 15:01:58 +0200124ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
Florin Corasa2157cf2016-08-16 21:09:14 +0200125 u8 version, ip_address_t * result)
Florin Corasf727db92016-06-23 15:01:58 +0200126{
Florin Corasa2157cf2016-08-16 21:09:14 +0200127 ip_lookup_main_t *lm;
128 void *addr;
Florin Corasf727db92016-06-23 15:01:58 +0200129
130 lm = (version == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
131 addr = ip_interface_get_first_address (lm, sw_if_index, version);
132 if (!addr)
133 return 0;
134
135 ip_address_set (result, addr, version);
136 return 1;
137}
138
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100139/**
140 * convert from a LISP address to a FIB prefix
141 */
142void
143ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix)
Florin Corasf727db92016-06-23 15:01:58 +0200144{
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100145 if (addr->version == IP4)
146 {
147 prefix->fp_len = 32;
148 prefix->fp_proto = FIB_PROTOCOL_IP4;
149 memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad));
150 memcpy (&prefix->fp_addr.ip4, &addr->ip, sizeof (prefix->fp_addr.ip4));
151 }
Florin Corasf727db92016-06-23 15:01:58 +0200152 else
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100153 {
154 prefix->fp_len = 128;
155 prefix->fp_proto = FIB_PROTOCOL_IP6;
156 memcpy (&prefix->fp_addr.ip6, &addr->ip, sizeof (prefix->fp_addr.ip6));
157 }
Florin Corasf727db92016-06-23 15:01:58 +0200158}
159
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100160/**
161 * convert from a LISP to a FIB prefix
162 */
163void
164ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix,
165 fib_prefix_t * fib_prefix)
Florin Corasf727db92016-06-23 15:01:58 +0200166{
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100167 ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix);
168 fib_prefix->fp_len = ip_prefix->len;
Florin Corasf727db92016-06-23 15:01:58 +0200169}
170
171/**
172 * Find the sw_if_index of the interface that would be used to egress towards
173 * dst.
174 */
175u32
176ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
177{
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100178 fib_node_index_t fei;
179 fib_prefix_t prefix;
Florin Corasf727db92016-06-23 15:01:58 +0200180
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100181 ip_address_to_fib_prefix (dst, &prefix);
Florin Corasf727db92016-06-23 15:01:58 +0200182
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100183 fei = fib_table_lookup (0, &prefix);
184
185 return (fib_entry_get_resolving_interface (fei));
Florin Corasf727db92016-06-23 15:01:58 +0200186}
187
188/**
189 * Find first IP of the interface that would be used to egress towards dst.
190 * Returns 1 if the address is found 0 otherwise.
191 */
192int
193ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
Florin Corasa2157cf2016-08-16 21:09:14 +0200194 ip_address_t * result)
Florin Corasf727db92016-06-23 15:01:58 +0200195{
196 u32 si;
Florin Corasa2157cf2016-08-16 21:09:14 +0200197 ip_lookup_main_t *lm;
198 void *addr = 0;
Florin Corasf727db92016-06-23 15:01:58 +0200199 u8 ipver;
200
Florin Corasa2157cf2016-08-16 21:09:14 +0200201 ASSERT (result != 0);
Florin Corasf727db92016-06-23 15:01:58 +0200202
Florin Corasa2157cf2016-08-16 21:09:14 +0200203 ipver = ip_addr_version (dst);
Florin Corasf727db92016-06-23 15:01:58 +0200204
205 lm = (ipver == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
Neale Ranns0bfe5d82016-08-25 15:29:12 +0100206 si = ip_fib_get_egress_iface_for_dst (lcm, dst);
Florin Corasf727db92016-06-23 15:01:58 +0200207
Florin Corasa2157cf2016-08-16 21:09:14 +0200208 if ((u32) ~ 0 == si)
Florin Corasf727db92016-06-23 15:01:58 +0200209 return 0;
210
211 /* find the first ip address */
212 addr = ip_interface_get_first_address (lm, si, ipver);
213 if (0 == addr)
214 return 0;
215
216 ip_address_set (result, addr, ipver);
217 return 1;
218}
219
220static int
Florin Coras1a1adc72016-07-22 01:45:30 +0200221dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add)
Florin Corasf727db92016-06-23 15:01:58 +0200222{
Neale Ranns5e575b12016-10-03 09:40:25 +0100223 uword *dp_table;
Florin Corasf727db92016-06-23 15:01:58 +0200224
Florin Coras1a1adc72016-07-22 01:45:30 +0200225 if (!is_l2)
Florin Corasf727db92016-06-23 15:01:58 +0200226 {
Florin Corasa2157cf2016-08-16 21:09:14 +0200227 dp_table = hash_get (lcm->table_id_by_vni, vni);
Florin Coras1a1adc72016-07-22 01:45:30 +0200228
229 if (!dp_table)
Florin Corasa2157cf2016-08-16 21:09:14 +0200230 {
231 clib_warning ("vni %d not associated to a vrf!", vni);
232 return VNET_API_ERROR_INVALID_VALUE;
233 }
Florin Coras1a1adc72016-07-22 01:45:30 +0200234 }
235 else
236 {
Florin Corasa2157cf2016-08-16 21:09:14 +0200237 dp_table = hash_get (lcm->bd_id_by_vni, vni);
Florin Coras1a1adc72016-07-22 01:45:30 +0200238 if (!dp_table)
Florin Corasa2157cf2016-08-16 21:09:14 +0200239 {
240 clib_warning ("vni %d not associated to a bridge domain!", vni);
241 return VNET_API_ERROR_INVALID_VALUE;
242 }
Florin Corasf727db92016-06-23 15:01:58 +0200243 }
244
Florin Corasf727db92016-06-23 15:01:58 +0200245 /* enable/disable data-plane interface */
246 if (is_add)
247 {
Neale Ranns5e575b12016-10-03 09:40:25 +0100248 if (is_l2)
249 lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
250 else
251 lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0]);
Florin Corasf727db92016-06-23 15:01:58 +0200252 }
253 else
254 {
Neale Ranns5e575b12016-10-03 09:40:25 +0100255 if (is_l2)
256 lisp_gpe_tenant_l2_iface_unlock (vni);
257 else
258 lisp_gpe_tenant_l3_iface_unlock (vni);
Florin Corasf727db92016-06-23 15:01:58 +0200259 }
260
261 return 0;
262}
263
264static void
265dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
266{
Florin Corasa2157cf2016-08-16 21:09:14 +0200267 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
268 fwd_entry_t *fe = 0;
269 uword *feip = 0;
270 memset (a, 0, sizeof (*a));
Florin Corasf727db92016-06-23 15:01:58 +0200271
Florin Corasa2157cf2016-08-16 21:09:14 +0200272 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
Florin Corasf727db92016-06-23 15:01:58 +0200273 if (!feip)
274 return;
275
Florin Corasa2157cf2016-08-16 21:09:14 +0200276 fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
Florin Corasf727db92016-06-23 15:01:58 +0200277
278 /* delete dp fwd entry */
279 u32 sw_if_index;
280 a->is_add = 0;
Florin Corasbb5c22f2016-08-02 02:31:03 +0200281 a->locator_pairs = fe->locator_pairs;
Filip Tehlar2fdaece2016-09-28 14:27:59 +0200282 a->vni = gid_address_vni (&fe->reid);
283 gid_address_copy (&a->rmt_eid, &fe->reid);
Filip Tehlard5fcc462016-10-17 16:20:18 +0200284 if (fe->is_src_dst)
285 gid_address_copy (&a->lcl_eid, &fe->leid);
Florin Corasf727db92016-06-23 15:01:58 +0200286
287 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
288
289 /* delete entry in fwd table */
Florin Corasa2157cf2016-08-16 21:09:14 +0200290 hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
291 vec_free (fe->locator_pairs);
292 pool_put (lcm->fwd_entry_pool, fe);
Florin Corasf727db92016-06-23 15:01:58 +0200293}
294
295/**
296 * Finds first remote locator with best (lowest) priority that has a local
297 * peer locator with an underlying route to it.
298 *
299 */
300static u32
Florin Corasa2157cf2016-08-16 21:09:14 +0200301get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
302 mapping_t * rmt_map, locator_pair_t ** locator_pairs)
Florin Corasf727db92016-06-23 15:01:58 +0200303{
Florin Coras3590ac52016-08-08 16:04:26 +0200304 u32 i, limitp = 0, li, found = 0, esi;
Florin Corasa2157cf2016-08-16 21:09:14 +0200305 locator_set_t *rmt_ls, *lcl_ls;
306 ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
307 locator_t *lp, *rmt = 0;
308 uword *checked = 0;
Florin Corasbb5c22f2016-08-02 02:31:03 +0200309 locator_pair_t pair;
Florin Corasf727db92016-06-23 15:01:58 +0200310
Florin Corasa2157cf2016-08-16 21:09:14 +0200311 rmt_ls =
312 pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
313 lcl_ls =
314 pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
Florin Corasf727db92016-06-23 15:01:58 +0200315
Florin Corasa2157cf2016-08-16 21:09:14 +0200316 if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
Florin Corasf727db92016-06-23 15:01:58 +0200317 return 0;
318
Florin Coras3590ac52016-08-08 16:04:26 +0200319 while (1)
Florin Corasf727db92016-06-23 15:01:58 +0200320 {
321 rmt = 0;
322
323 /* find unvisited remote locator with best priority */
Florin Corasa2157cf2016-08-16 21:09:14 +0200324 for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
325 {
326 if (0 != hash_get (checked, i))
327 continue;
Florin Corasf727db92016-06-23 15:01:58 +0200328
Florin Corasa2157cf2016-08-16 21:09:14 +0200329 li = vec_elt (rmt_ls->locator_indices, i);
330 lp = pool_elt_at_index (lcm->locator_pool, li);
Florin Corasf727db92016-06-23 15:01:58 +0200331
Florin Corasa2157cf2016-08-16 21:09:14 +0200332 /* we don't support non-IP locators for now */
333 if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
334 continue;
Florin Corasf727db92016-06-23 15:01:58 +0200335
Florin Corasa2157cf2016-08-16 21:09:14 +0200336 if ((found && lp->priority == limitp)
337 || (!found && lp->priority >= limitp))
338 {
339 rmt = lp;
Florin Coras3590ac52016-08-08 16:04:26 +0200340
Florin Corasa2157cf2016-08-16 21:09:14 +0200341 /* don't search for locators with lower priority and don't
342 * check this locator again*/
343 limitp = lp->priority;
344 hash_set (checked, i, 1);
345 break;
346 }
347 }
Florin Corasf727db92016-06-23 15:01:58 +0200348 /* check if a local locator with a route to remote locator exists */
349 if (rmt != 0)
Florin Corasa2157cf2016-08-16 21:09:14 +0200350 {
351 /* find egress sw_if_index for rmt locator */
352 esi =
353 ip_fib_get_egress_iface_for_dst (lcm,
354 &gid_address_ip (&rmt->address));
355 if ((u32) ~ 0 == esi)
356 continue;
Florin Corasf727db92016-06-23 15:01:58 +0200357
Florin Corasa2157cf2016-08-16 21:09:14 +0200358 for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
359 {
360 li = vec_elt (lcl_ls->locator_indices, i);
361 locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
Florin Corasf727db92016-06-23 15:01:58 +0200362
Florin Corasa2157cf2016-08-16 21:09:14 +0200363 /* found local locator with the needed sw_if_index */
364 if (sl->sw_if_index == esi)
365 {
366 /* and it has an address */
367 if (0 == ip_interface_get_first_ip_address (lcm,
368 sl->sw_if_index,
369 gid_address_ip_version
370 (&rmt->address),
371 lcl_addr))
372 continue;
Florin Corasf727db92016-06-23 15:01:58 +0200373
Florin Corasa2157cf2016-08-16 21:09:14 +0200374 memset (&pair, 0, sizeof (pair));
375 ip_address_copy (&pair.rmt_loc,
376 &gid_address_ip (&rmt->address));
377 ip_address_copy (&pair.lcl_loc, lcl_addr);
378 pair.weight = rmt->weight;
Filip Tehlarfb9931f2016-12-09 13:52:38 +0100379 pair.priority = rmt->priority;
Florin Corasa2157cf2016-08-16 21:09:14 +0200380 vec_add1 (locator_pairs[0], pair);
381 found = 1;
382 }
383 }
384 }
Florin Corasf727db92016-06-23 15:01:58 +0200385 else
Florin Corasa2157cf2016-08-16 21:09:14 +0200386 break;
Florin Corasf727db92016-06-23 15:01:58 +0200387 }
Florin Coras3590ac52016-08-08 16:04:26 +0200388
Florin Corasa2157cf2016-08-16 21:09:14 +0200389 hash_free (checked);
Florin Coras3590ac52016-08-08 16:04:26 +0200390 return found;
Florin Corasf727db92016-06-23 15:01:58 +0200391}
392
393static void
Florin Corasdca88042016-09-14 16:01:38 +0200394gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
395 fid_address_t * fid)
396{
397 ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
398
399 dst[0] = src[0];
400
401 switch (fid_addr_type (fid))
402 {
403 case FID_ADDR_IP_PREF:
404 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
405 gid_address_ippref (dst) = fid_addr_ippref (fid);
406 break;
407 case FID_ADDR_MAC:
408 gid_address_type (dst) = GID_ADDR_MAC;
409 mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
410 break;
411 default:
412 clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
413 break;
414 }
415}
416
Filip Tehlar397fd7d2016-10-26 14:31:24 +0200417u8
418vnet_lisp_map_register_state_get (void)
419{
420 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
421 return lcm->map_registering;
422}
423
424u8
425vnet_lisp_rloc_probe_state_get (void)
426{
427 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
428 return lcm->rloc_probing;
429}
430
Florin Corasdca88042016-09-14 16:01:38 +0200431static void
Florin Corasa2157cf2016-08-16 21:09:14 +0200432dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
Florin Corasf727db92016-06-23 15:01:58 +0200433{
Florin Corasa2157cf2016-08-16 21:09:14 +0200434 vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
Florin Corasba888e42017-01-24 11:38:18 -0800435 gid_address_t *rmt_eid, *lcl_eid;
436 mapping_t *lcl_map, *rmt_map;
Florin Corasf727db92016-06-23 15:01:58 +0200437 u32 sw_if_index;
Florin Corasa2157cf2016-08-16 21:09:14 +0200438 uword *feip = 0, *dpid;
439 fwd_entry_t *fe;
Filip Tehlar69a9b762016-09-23 10:00:52 +0200440 u8 type, is_src_dst = 0;
Florin Corasba888e42017-01-24 11:38:18 -0800441 int rv;
Florin Corasf727db92016-06-23 15:01:58 +0200442
Florin Corasa2157cf2016-08-16 21:09:14 +0200443 memset (a, 0, sizeof (*a));
Florin Corasf727db92016-06-23 15:01:58 +0200444
445 /* remove entry if it already exists */
446 feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
447 if (feip)
448 dp_del_fwd_entry (lcm, src_map_index, dst_map_index);
449
Florin Corasba888e42017-01-24 11:38:18 -0800450 /*
451 * Determine local mapping and eid
452 */
Filip Tehlarf3e3fd32016-09-30 12:47:59 +0200453 if (lcm->lisp_pitr)
Florin Corasba888e42017-01-24 11:38:18 -0800454 lcl_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
Filip Tehlarf3e3fd32016-09-30 12:47:59 +0200455 else
Florin Corasba888e42017-01-24 11:38:18 -0800456 lcl_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
457 lcl_eid = &lcl_map->eid;
Florin Corasf727db92016-06-23 15:01:58 +0200458
Florin Corasba888e42017-01-24 11:38:18 -0800459 /*
460 * Determine remote mapping and eid
461 */
462 rmt_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
463 rmt_eid = &rmt_map->eid;
464
465 /*
466 * Build and insert data plane forwarding entry
467 */
Florin Corasf727db92016-06-23 15:01:58 +0200468 a->is_add = 1;
469
Filip Tehlard5fcc462016-10-17 16:20:18 +0200470 if (MR_MODE_SRC_DST == lcm->map_request_mode)
Florin Corasdca88042016-09-14 16:01:38 +0200471 {
Florin Corasba888e42017-01-24 11:38:18 -0800472 if (GID_ADDR_SRC_DST == gid_address_type (rmt_eid))
Filip Tehlard5fcc462016-10-17 16:20:18 +0200473 {
Florin Corasba888e42017-01-24 11:38:18 -0800474 gid_address_sd_to_flat (&a->rmt_eid, rmt_eid,
475 &gid_address_sd_dst (rmt_eid));
476 gid_address_sd_to_flat (&a->lcl_eid, rmt_eid,
477 &gid_address_sd_src (rmt_eid));
Filip Tehlard5fcc462016-10-17 16:20:18 +0200478 }
479 else
480 {
Florin Corasba888e42017-01-24 11:38:18 -0800481 gid_address_copy (&a->rmt_eid, rmt_eid);
482 gid_address_copy (&a->lcl_eid, lcl_eid);
Filip Tehlard5fcc462016-10-17 16:20:18 +0200483 }
Filip Tehlar69a9b762016-09-23 10:00:52 +0200484 is_src_dst = 1;
Florin Corasdca88042016-09-14 16:01:38 +0200485 }
486 else
Florin Corasba888e42017-01-24 11:38:18 -0800487 gid_address_copy (&a->rmt_eid, rmt_eid);
Florin Corasdca88042016-09-14 16:01:38 +0200488
Florin Corasa2157cf2016-08-16 21:09:14 +0200489 a->vni = gid_address_vni (&a->rmt_eid);
Florin Coras1a1adc72016-07-22 01:45:30 +0200490
491 /* get vrf or bd_index associated to vni */
Florin Corasdca88042016-09-14 16:01:38 +0200492 type = gid_address_type (&a->rmt_eid);
Florin Coras1a1adc72016-07-22 01:45:30 +0200493 if (GID_ADDR_IP_PREFIX == type)
494 {
Florin Corasa2157cf2016-08-16 21:09:14 +0200495 dpid = hash_get (lcm->table_id_by_vni, a->vni);
Florin Coras1a1adc72016-07-22 01:45:30 +0200496 if (!dpid)
Florin Corasa2157cf2016-08-16 21:09:14 +0200497 {
498 clib_warning ("vni %d not associated to a vrf!", a->vni);
499 return;
500 }
Florin Coras1a1adc72016-07-22 01:45:30 +0200501 a->table_id = dpid[0];
502 }
503 else if (GID_ADDR_MAC == type)
504 {
Florin Corasa2157cf2016-08-16 21:09:14 +0200505 dpid = hash_get (lcm->bd_id_by_vni, a->vni);
Florin Coras1a1adc72016-07-22 01:45:30 +0200506 if (!dpid)
Florin Corasa2157cf2016-08-16 21:09:14 +0200507 {
508 clib_warning ("vni %d not associated to a bridge domain !", a->vni);
509 return;
510 }
Florin Coras1a1adc72016-07-22 01:45:30 +0200511 a->bd_id = dpid[0];
512 }
513
Florin Corasf727db92016-06-23 15:01:58 +0200514 /* find best locator pair that 1) verifies LISP policy 2) are connected */
Florin Corasba888e42017-01-24 11:38:18 -0800515 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
516
517 /* Either rmt mapping is negative or we can't find underlay path.
518 * Try again with petr if configured */
519 if (rv == 0 && (lcm->flags & LISP_FLAG_USE_PETR))
Florin Corasf727db92016-06-23 15:01:58 +0200520 {
Florin Corasba888e42017-01-24 11:38:18 -0800521 rmt_map = lisp_get_petr_mapping (lcm);
522 rv = get_locator_pairs (lcm, lcl_map, rmt_map, &a->locator_pairs);
Florin Corasf727db92016-06-23 15:01:58 +0200523 }
524
Florin Corasba888e42017-01-24 11:38:18 -0800525 /* negative entry */
526 if (rv == 0)
527 {
528 a->is_negative = 1;
529 a->action = rmt_map->action;
530 }
Florin Corasf727db92016-06-23 15:01:58 +0200531
532 vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
533
534 /* add tunnel to fwd entry table XXX check return value from DP insertion */
535 pool_get (lcm->fwd_entry_pool, fe);
Florin Corasbb5c22f2016-08-02 02:31:03 +0200536 fe->locator_pairs = a->locator_pairs;
Filip Tehlar2fdaece2016-09-28 14:27:59 +0200537 gid_address_copy (&fe->reid, &a->rmt_eid);
Filip Tehlarb601f222017-01-02 10:22:56 +0100538
539 if (is_src_dst)
540 gid_address_copy (&fe->leid, &a->lcl_eid);
541 else
Florin Corasba888e42017-01-24 11:38:18 -0800542 gid_address_copy (&fe->leid, lcl_eid);
Filip Tehlarb601f222017-01-02 10:22:56 +0100543
Filip Tehlar69a9b762016-09-23 10:00:52 +0200544 fe->is_src_dst = is_src_dst;
Florin Corasf727db92016-06-23 15:01:58 +0200545 hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
Florin Corasa2157cf2016-08-16 21:09:14 +0200546 fe - lcm->fwd_entry_pool);
Florin Corasf727db92016-06-23 15:01:58 +0200547}
548
Filip Tehlarce1aae42017-01-04 10:42:25 +0100549typedef struct
550{
551 u32 si;
552 u32 di;
553} fwd_entry_mt_arg_t;
554
555static void *
556dp_add_fwd_entry_thread_fn (void *arg)
557{
558 fwd_entry_mt_arg_t *a = arg;
559 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
560 dp_add_fwd_entry (lcm, a->si, a->di);
561 return 0;
562}
563
564static int
565dp_add_fwd_entry_from_mt (u32 si, u32 di)
566{
567 fwd_entry_mt_arg_t a;
568
569 memset (&a, 0, sizeof (a));
570 a.si = si;
571 a.di = di;
572
573 vl_api_rpc_call_main_thread (dp_add_fwd_entry_thread_fn,
574 (u8 *) & a, sizeof (a));
575 return 0;
576}
577
Florin Corasf727db92016-06-23 15:01:58 +0200578/**
Filip Tehlar69a9b762016-09-23 10:00:52 +0200579 * Returns vector of adjacencies.
580 *
581 * The caller must free the vector returned by this function.
582 *
583 * @param vni virtual network identifier
584 * @return vector of adjacencies
585 */
586lisp_adjacency_t *
587vnet_lisp_adjacencies_get_by_vni (u32 vni)
588{
589 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
590 fwd_entry_t *fwd;
591 lisp_adjacency_t *adjs = 0, adj;
592
593 /* *INDENT-OFF* */
594 pool_foreach(fwd, lcm->fwd_entry_pool,
595 ({
596 if (gid_address_vni (&fwd->reid) != vni)
597 continue;
598
599 gid_address_copy (&adj.reid, &fwd->reid);
600 gid_address_copy (&adj.leid, &fwd->leid);
601 vec_add1 (adjs, adj);
602 }));
603 /* *INDENT-ON* */
604
605 return adjs;
606}
607
Filip Tehlar397fd7d2016-10-26 14:31:24 +0200608static lisp_msmr_t *
609get_map_server (ip_address_t * a)
610{
611 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
612 lisp_msmr_t *m;
613
614 vec_foreach (m, lcm->map_servers)
615 {
616 if (!ip_address_cmp (&m->address, a))
617 {
618 return m;
619 }
620 }
621 return 0;
622}
623
624static lisp_msmr_t *
625get_map_resolver (ip_address_t * a)
626{
627 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
628 lisp_msmr_t *m;
629
630 vec_foreach (m, lcm->map_resolvers)
631 {
632 if (!ip_address_cmp (&m->address, a))
633 {
634 return m;
635 }
636 }
637 return 0;
638}
639
640int
641vnet_lisp_add_del_map_server (ip_address_t * addr, u8 is_add)
642{
643 u32 i;
644 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
645 lisp_msmr_t _ms, *ms = &_ms;
646
647 if (vnet_lisp_enable_disable_status () == 0)
648 {
649 clib_warning ("LISP is disabled!");
650 return VNET_API_ERROR_LISP_DISABLED;
651 }
652
653 if (is_add)
654 {
655 if (get_map_server (addr))
656 {
657 clib_warning ("map-server %U already exists!", format_ip_address,
658 addr);
659 return -1;
660 }
661
662 memset (ms, 0, sizeof (*ms));
663 ip_address_copy (&ms->address, addr);
664 vec_add1 (lcm->map_servers, ms[0]);
665 }
666 else
667 {
668 for (i = 0; i < vec_len (lcm->map_servers); i++)
669 {
670 ms = vec_elt_at_index (lcm->map_servers, i);
671 if (!ip_address_cmp (&ms->address, addr))
672 {
673 vec_del1 (lcm->map_servers, i);
674 break;
675 }
676 }
677 }
678
679 return 0;
680}
681
Filip Tehlar69a9b762016-09-23 10:00:52 +0200682/**
Florin Corasf727db92016-06-23 15:01:58 +0200683 * Add/remove mapping to/from map-cache. Overwriting not allowed.
684 */
685int
686vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
Florin Corasa2157cf2016-08-16 21:09:14 +0200687 u32 * map_index_result)
Florin Corase127a7e2016-02-18 22:20:01 +0100688{
Florin Corasa2157cf2016-08-16 21:09:14 +0200689 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
690 u32 mi, *map_indexp, map_index, i;
691 mapping_t *m, *old_map;
692 u32 **eid_indexes;
Florin Corase127a7e2016-02-18 22:20:01 +0100693
Florin Corasf727db92016-06-23 15:01:58 +0200694 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
Filip Tehlar53f09e32016-05-19 14:25:44 +0200695 old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
Florin Corase127a7e2016-02-18 22:20:01 +0100696 if (a->is_add)
697 {
698 /* TODO check if overwriting and take appropriate actions */
Florin Corasa2157cf2016-08-16 21:09:14 +0200699 if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
700 {
701 clib_warning ("eid %U found in the eid-table", format_gid_address,
702 &a->eid);
703 return VNET_API_ERROR_VALUE_EXIST;
704 }
Florin Corase127a7e2016-02-18 22:20:01 +0100705
Florin Corasa2157cf2016-08-16 21:09:14 +0200706 pool_get (lcm->mapping_pool, m);
Florin Corasf727db92016-06-23 15:01:58 +0200707 gid_address_copy (&m->eid, &a->eid);
Florin Corase127a7e2016-02-18 22:20:01 +0100708 m->locator_set_index = a->locator_set_index;
709 m->ttl = a->ttl;
Filip Tehlar53f09e32016-05-19 14:25:44 +0200710 m->action = a->action;
Florin Corase127a7e2016-02-18 22:20:01 +0100711 m->local = a->local;
Filip Tehlar3cd9e732016-08-23 10:52:44 +0200712 m->is_static = a->is_static;
Filip Tehlar397fd7d2016-10-26 14:31:24 +0200713 m->key = vec_dup (a->key);
714 m->key_id = a->key_id;
Florin Corase127a7e2016-02-18 22:20:01 +0100715
716 map_index = m - lcm->mapping_pool;
Florin Corasf727db92016-06-23 15:01:58 +0200717 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
Florin Corasa2157cf2016-08-16 21:09:14 +0200718 1);
Florin Corase127a7e2016-02-18 22:20:01 +0100719
Florin Corasa2157cf2016-08-16 21:09:14 +0200720 if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
721 {
722 clib_warning ("Locator set with index %d doesn't exist",
723 a->locator_set_index);
724 return VNET_API_ERROR_INVALID_VALUE;
725 }
Florin Corase127a7e2016-02-18 22:20:01 +0100726
727 /* add eid to list of eids supported by locator-set */
728 vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
Florin Corasa2157cf2016-08-16 21:09:14 +0200729 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
730 a->locator_set_index);
731 vec_add1 (eid_indexes[0], map_index);
Florin Corase127a7e2016-02-18 22:20:01 +0100732
733 if (a->local)
Florin Corasa2157cf2016-08-16 21:09:14 +0200734 {
735 /* mark as local */
736 vec_add1 (lcm->local_mappings_indexes, map_index);
737 }
Florin Corase127a7e2016-02-18 22:20:01 +0100738 map_index_result[0] = map_index;
739 }
740 else
741 {
Florin Coras577c3552016-04-21 00:45:40 +0200742 if (mi == GID_LOOKUP_MISS)
Florin Corasa2157cf2016-08-16 21:09:14 +0200743 {
744 clib_warning ("eid %U not found in the eid-table",
745 format_gid_address, &a->eid);
746 return VNET_API_ERROR_INVALID_VALUE;
747 }
Florin Corase127a7e2016-02-18 22:20:01 +0100748
749 /* clear locator-set to eids binding */
Florin Corasa2157cf2016-08-16 21:09:14 +0200750 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
751 a->locator_set_index);
752 for (i = 0; i < vec_len (eid_indexes[0]); i++)
753 {
754 map_indexp = vec_elt_at_index (eid_indexes[0], i);
755 if (map_indexp[0] == mi)
756 break;
757 }
758 vec_del1 (eid_indexes[0], i);
Florin Corase127a7e2016-02-18 22:20:01 +0100759
760 /* remove local mark if needed */
Florin Corasa2157cf2016-08-16 21:09:14 +0200761 m = pool_elt_at_index (lcm->mapping_pool, mi);
Florin Corase127a7e2016-02-18 22:20:01 +0100762 if (m->local)
Florin Corasa2157cf2016-08-16 21:09:14 +0200763 {
764 u32 k, *lm_indexp;
765 for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
766 {
767 lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
768 if (lm_indexp[0] == mi)
769 break;
770 }
771 vec_del1 (lcm->local_mappings_indexes, k);
772 }
Florin Corase127a7e2016-02-18 22:20:01 +0100773
774 /* remove mapping from dictionary */
Florin Corasf727db92016-06-23 15:01:58 +0200775 gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
Filip Tehlar324112f2016-06-02 16:07:38 +0200776 gid_address_free (&m->eid);
Florin Corase127a7e2016-02-18 22:20:01 +0100777 pool_put_index (lcm->mapping_pool, mi);
778 }
779
780 return 0;
781}
782
Florin Corasf727db92016-06-23 15:01:58 +0200783/**
784 * Add/update/delete mapping to/in/from map-cache.
785 */
Florin Coras577c3552016-04-21 00:45:40 +0200786int
787vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
Florin Corasa2157cf2016-08-16 21:09:14 +0200788 u32 * map_index_result)
Florin Coras577c3552016-04-21 00:45:40 +0200789{
Florin Corasa2157cf2016-08-16 21:09:14 +0200790 uword *dp_table = 0;
Florin Corasf727db92016-06-23 15:01:58 +0200791 u32 vni;
Florin Coras1a1adc72016-07-22 01:45:30 +0200792 u8 type;
Florin Corasf727db92016-06-23 15:01:58 +0200793
Florin Corasa2157cf2016-08-16 21:09:14 +0200794 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Florin Coras577c3552016-04-21 00:45:40 +0200795
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +0200796 if (vnet_lisp_enable_disable_status () == 0)
797 {
798 clib_warning ("LISP is disabled!");
799 return VNET_API_ERROR_LISP_DISABLED;
800 }
801
Florin Corasa2157cf2016-08-16 21:09:14 +0200802 vni = gid_address_vni (&a->eid);
803 type = gid_address_type (&a->eid);
Florin Coras1a1adc72016-07-22 01:45:30 +0200804 if (GID_ADDR_IP_PREFIX == type)
Florin Corasa2157cf2016-08-16 21:09:14 +0200805 dp_table = hash_get (lcm->table_id_by_vni, vni);
Florin Coras1a1adc72016-07-22 01:45:30 +0200806 else if (GID_ADDR_MAC == type)
Florin Corasa2157cf2016-08-16 21:09:14 +0200807 dp_table = hash_get (lcm->bd_id_by_vni, vni);
Florin Coras577c3552016-04-21 00:45:40 +0200808
Florin Coras1a1adc72016-07-22 01:45:30 +0200809 if (!dp_table)
Florin Coras577c3552016-04-21 00:45:40 +0200810 {
Florin Corasa2157cf2016-08-16 21:09:14 +0200811 clib_warning ("vni %d not associated to a %s!", vni,
812 GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
Florin Coras577c3552016-04-21 00:45:40 +0200813 return VNET_API_ERROR_INVALID_VALUE;
814 }
815
Florin Corasf727db92016-06-23 15:01:58 +0200816 /* store/remove mapping from map-cache */
817 return vnet_lisp_map_cache_add_del (a, map_index_result);
Florin Coras577c3552016-04-21 00:45:40 +0200818}
819
Filip Tehlar324112f2016-06-02 16:07:38 +0200820int
Florin Coras1a1adc72016-07-22 01:45:30 +0200821vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
Filip Tehlar324112f2016-06-02 16:07:38 +0200822{
Florin Corasa2157cf2016-08-16 21:09:14 +0200823 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
824 uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
Filip Tehlar324112f2016-06-02 16:07:38 +0200825
826 if (vnet_lisp_enable_disable_status () == 0)
827 {
828 clib_warning ("LISP is disabled!");
829 return -1;
830 }
831
Florin Coras1a1adc72016-07-22 01:45:30 +0200832 dp_table_by_vni = is_l2 ? &lcm->bd_id_by_vni : &lcm->table_id_by_vni;
833 vni_by_dp_table = is_l2 ? &lcm->vni_by_bd_id : &lcm->vni_by_table_id;
834
835 if (!is_l2 && (vni == 0 || dp_id == 0))
Filip Tehlar324112f2016-06-02 16:07:38 +0200836 {
837 clib_warning ("can't add/del default vni-vrf mapping!");
838 return -1;
839 }
840
Florin Coras1a1adc72016-07-22 01:45:30 +0200841 dp_idp = hash_get (dp_table_by_vni[0], vni);
842 vnip = hash_get (vni_by_dp_table[0], dp_id);
Filip Tehlar324112f2016-06-02 16:07:38 +0200843
844 if (is_add)
845 {
Florin Coras1a1adc72016-07-22 01:45:30 +0200846 if (dp_idp || vnip)
Florin Corasa2157cf2016-08-16 21:09:14 +0200847 {
848 clib_warning ("vni %d or vrf %d already used in vrf/vni "
849 "mapping!", vni, dp_id);
850 return -1;
851 }
Florin Coras1a1adc72016-07-22 01:45:30 +0200852 hash_set (dp_table_by_vni[0], vni, dp_id);
853 hash_set (vni_by_dp_table[0], dp_id, vni);
Florin Corasf727db92016-06-23 15:01:58 +0200854
855 /* create dp iface */
Florin Coras1a1adc72016-07-22 01:45:30 +0200856 dp_add_del_iface (lcm, vni, is_l2, 1);
Filip Tehlar324112f2016-06-02 16:07:38 +0200857 }
858 else
859 {
Florin Coras1a1adc72016-07-22 01:45:30 +0200860 if (!dp_idp || !vnip)
Florin Corasa2157cf2016-08-16 21:09:14 +0200861 {
862 clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
863 "mapping!", vni, dp_id);
864 return -1;
865 }
Florin Coras1a1adc72016-07-22 01:45:30 +0200866 hash_unset (dp_table_by_vni[0], vni);
867 hash_unset (vni_by_dp_table[0], dp_id);
Florin Corasf727db92016-06-23 15:01:58 +0200868
869 /* remove dp iface */
Florin Coras1a1adc72016-07-22 01:45:30 +0200870 dp_add_del_iface (lcm, vni, is_l2, 0);
Filip Tehlar324112f2016-06-02 16:07:38 +0200871 }
872 return 0;
Florin Coras1a1adc72016-07-22 01:45:30 +0200873
Filip Tehlar324112f2016-06-02 16:07:38 +0200874}
875
Florin Corasf727db92016-06-23 15:01:58 +0200876/* return 0 if the two locator sets are identical 1 otherwise */
877static u8
Florin Corasa2157cf2016-08-16 21:09:14 +0200878compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
879 locator_t * new_locators)
Filip Tehlar53f09e32016-05-19 14:25:44 +0200880{
Florin Corasf727db92016-06-23 15:01:58 +0200881 u32 i, old_li;
Florin Corasa2157cf2016-08-16 21:09:14 +0200882 locator_t *old_loc, *new_loc;
Filip Tehlar53f09e32016-05-19 14:25:44 +0200883
Florin Corasa2157cf2016-08-16 21:09:14 +0200884 if (vec_len (old_ls_indexes) != vec_len (new_locators))
Florin Corasf727db92016-06-23 15:01:58 +0200885 return 1;
Filip Tehlar53f09e32016-05-19 14:25:44 +0200886
Florin Corasa2157cf2016-08-16 21:09:14 +0200887 for (i = 0; i < vec_len (new_locators); i++)
Filip Tehlar53f09e32016-05-19 14:25:44 +0200888 {
Florin Corasa2157cf2016-08-16 21:09:14 +0200889 old_li = vec_elt (old_ls_indexes, i);
890 old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
Florin Corasf727db92016-06-23 15:01:58 +0200891
Florin Corasa2157cf2016-08-16 21:09:14 +0200892 new_loc = vec_elt_at_index (new_locators, i);
Florin Corasf727db92016-06-23 15:01:58 +0200893
894 if (locator_cmp (old_loc, new_loc))
Florin Corasa2157cf2016-08-16 21:09:14 +0200895 return 1;
Filip Tehlar53f09e32016-05-19 14:25:44 +0200896 }
Florin Corasf727db92016-06-23 15:01:58 +0200897 return 0;
Filip Tehlar53f09e32016-05-19 14:25:44 +0200898}
899
Filip Tehlard5fcc462016-10-17 16:20:18 +0200900typedef struct
901{
902 u8 is_negative;
903 void *lcm;
904 gid_address_t *eids_to_be_deleted;
905} remove_mapping_args_t;
906
907/**
908 * Callback invoked when a sub-prefix is found
909 */
910static void
911remove_mapping_if_needed (u32 mi, void *arg)
912{
913 u8 delete = 0;
914 remove_mapping_args_t *a = arg;
915 lisp_cp_main_t *lcm = a->lcm;
916 mapping_t *m;
917 locator_set_t *ls;
918
919 m = pool_elt_at_index (lcm->mapping_pool, mi);
920 if (!m)
921 return;
922
923 ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
924
925 if (a->is_negative)
926 {
927 if (0 != vec_len (ls->locator_indices))
928 delete = 1;
929 }
930 else
931 {
932 if (0 == vec_len (ls->locator_indices))
933 delete = 1;
934 }
935
936 if (delete)
937 vec_add1 (a->eids_to_be_deleted, m->eid);
938}
939
940/**
941 * This function searches map cache and looks for IP prefixes that are subset
942 * of the provided one. If such prefix is found depending on 'is_negative'
943 * it does follows:
944 *
945 * 1) if is_negative is true and found prefix points to positive mapping,
946 * then the mapping is removed
947 * 2) if is_negative is false and found prefix points to negative mapping,
948 * then the mapping is removed
949 */
950static void
951remove_overlapping_sub_prefixes (lisp_cp_main_t * lcm, gid_address_t * eid,
952 u8 is_negative)
953{
954 gid_address_t *e;
955 remove_mapping_args_t a;
Florin Corasf3dc11a2017-01-24 03:13:43 -0800956
Filip Tehlard5fcc462016-10-17 16:20:18 +0200957 memset (&a, 0, sizeof (a));
958
959 /* do this only in src/dst mode ... */
960 if (MR_MODE_SRC_DST != lcm->map_request_mode)
961 return;
962
963 /* ... and only for IP prefix */
964 if (GID_ADDR_SRC_DST != gid_address_type (eid)
965 || (FID_ADDR_IP_PREF != gid_address_sd_dst_type (eid)))
966 return;
967
968 a.is_negative = is_negative;
969 a.lcm = lcm;
970
971 gid_dict_foreach_subprefix (&lcm->mapping_index_by_gid, eid,
972 remove_mapping_if_needed, &a);
973
974 vec_foreach (e, a.eids_to_be_deleted)
Filip Tehlarfb9931f2016-12-09 13:52:38 +0100975 {
Florin Corasf3dc11a2017-01-24 03:13:43 -0800976 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
977
978 memset (adj_args, 0, sizeof (adj_args[0]));
979 gid_address_copy (&adj_args->reid, e);
980 adj_args->is_add = 0;
981 if (vnet_lisp_add_del_adjacency (adj_args))
982 clib_warning ("failed to del adjacency!");
983
Filip Tehlard5fcc462016-10-17 16:20:18 +0200984 vnet_lisp_add_del_mapping (e, 0, 0, 0, 0, 0 /* is add */ , 0, 0);
Filip Tehlarfb9931f2016-12-09 13:52:38 +0100985 }
Filip Tehlard5fcc462016-10-17 16:20:18 +0200986
987 vec_free (a.eids_to_be_deleted);
988}
989
Filip Tehlar9677a942016-11-28 10:23:31 +0100990static void
991mapping_delete_timer (lisp_cp_main_t * lcm, u32 mi)
992{
993 timing_wheel_delete (&lcm->wheel, mi);
994}
995
Filip Tehlara6bce492017-02-03 10:17:49 +0100996static int
997is_local_ip (lisp_cp_main_t * lcm, ip_address_t * addr)
998{
999 fib_node_index_t fei;
1000 fib_prefix_t prefix;
1001 fib_entry_flag_t flags;
1002
1003 ip_address_to_fib_prefix (addr, &prefix);
1004
1005 fei = fib_table_lookup (0, &prefix);
1006 flags = fib_entry_get_flags (fei);
1007 return (FIB_ENTRY_FLAG_LOCAL & flags);
1008}
1009
Filip Tehlar195bcee2016-05-13 17:37:35 +02001010/**
Florin Corasf727db92016-06-23 15:01:58 +02001011 * Adds/removes/updates mapping. Does not program forwarding.
Filip Tehlar195bcee2016-05-13 17:37:35 +02001012 *
Florin Coras71893ac2016-07-10 20:09:32 +02001013 * @param eid end-host identifier
Filip Tehlar195bcee2016-05-13 17:37:35 +02001014 * @param rlocs vector of remote locators
1015 * @param action action for negative map-reply
1016 * @param is_add add mapping if non-zero, delete otherwise
Florin Coras71893ac2016-07-10 20:09:32 +02001017 * @param res_map_index the map-index that was created/updated/removed. It is
1018 * set to ~0 if no action is taken.
Filip Tehlar3cd9e732016-08-23 10:52:44 +02001019 * @param is_static used for distinguishing between statically learned
1020 remote mappings and mappings obtained from MR
Filip Tehlar195bcee2016-05-13 17:37:35 +02001021 * @return return code
1022 */
1023int
Florin Coras71893ac2016-07-10 20:09:32 +02001024vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action,
Filip Tehlar3cd9e732016-08-23 10:52:44 +02001025 u8 authoritative, u32 ttl, u8 is_add, u8 is_static,
Florin Corasa2157cf2016-08-16 21:09:14 +02001026 u32 * res_map_index)
Filip Tehlar195bcee2016-05-13 17:37:35 +02001027{
Florin Corasa2157cf2016-08-16 21:09:14 +02001028 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1029 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1030 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Florin Corasf727db92016-06-23 15:01:58 +02001031 u32 mi, ls_index = 0, dst_map_index;
Florin Corasa2157cf2016-08-16 21:09:14 +02001032 mapping_t *old_map;
Filip Tehlara6bce492017-02-03 10:17:49 +01001033 locator_t *loc;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001034
Florin Corasa2157cf2016-08-16 21:09:14 +02001035 if (vnet_lisp_enable_disable_status () == 0)
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001036 {
1037 clib_warning ("LISP is disabled!");
1038 return VNET_API_ERROR_LISP_DISABLED;
1039 }
1040
Florin Corasf727db92016-06-23 15:01:58 +02001041 if (res_map_index)
1042 res_map_index[0] = ~0;
Filip Tehlar58f886a2016-05-30 15:57:40 +02001043
Florin Corasf727db92016-06-23 15:01:58 +02001044 memset (m_args, 0, sizeof (m_args[0]));
1045 memset (ls_args, 0, sizeof (ls_args[0]));
Filip Tehlar195bcee2016-05-13 17:37:35 +02001046
Florin Corasf727db92016-06-23 15:01:58 +02001047 ls_args->locators = rlocs;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001048
Florin Coras71893ac2016-07-10 20:09:32 +02001049 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
Florin Corasa2157cf2016-08-16 21:09:14 +02001050 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
Florin Corasf727db92016-06-23 15:01:58 +02001051
1052 if (is_add)
Filip Tehlar195bcee2016-05-13 17:37:35 +02001053 {
Filip Tehlar272c69e2017-02-15 16:40:35 +01001054 /* check if none of the locators match localy configured address */
1055 vec_foreach (loc, rlocs)
1056 {
1057 ip_prefix_t *p = &gid_address_ippref (&loc->address);
1058 if (is_local_ip (lcm, &ip_prefix_addr (p)))
1059 {
1060 clib_warning ("RLOC %U matches a local address!",
1061 format_gid_address, &loc->address);
1062 return VNET_API_ERROR_LISP_RLOC_LOCAL;
1063 }
1064 }
1065
Florin Corasf727db92016-06-23 15:01:58 +02001066 /* overwrite: if mapping already exists, decide if locators should be
1067 * updated and be done */
Florin Coras71893ac2016-07-10 20:09:32 +02001068 if (old_map && gid_address_cmp (&old_map->eid, eid) == 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02001069 {
Filip Tehlar3cd9e732016-08-23 10:52:44 +02001070 if (!is_static && (old_map->is_static || old_map->local))
1071 {
1072 /* do not overwrite local or static remote mappings */
1073 clib_warning ("mapping %U rejected due to collision with local "
1074 "or static remote mapping!", format_gid_address,
Filip Tehlard5fcc462016-10-17 16:20:18 +02001075 eid);
Filip Tehlar3cd9e732016-08-23 10:52:44 +02001076 return 0;
1077 }
1078
Florin Corasa2157cf2016-08-16 21:09:14 +02001079 locator_set_t *old_ls;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001080
Florin Corasa2157cf2016-08-16 21:09:14 +02001081 /* update mapping attributes */
1082 old_map->action = action;
1083 old_map->authoritative = authoritative;
1084 old_map->ttl = ttl;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001085
Florin Corasa2157cf2016-08-16 21:09:14 +02001086 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1087 old_map->locator_set_index);
1088 if (compare_locators (lcm, old_ls->locator_indices,
1089 ls_args->locators))
1090 {
1091 /* set locator-set index to overwrite */
1092 ls_args->is_add = 1;
1093 ls_args->index = old_map->locator_set_index;
1094 vnet_lisp_add_del_locator_set (ls_args, 0);
1095 if (res_map_index)
1096 res_map_index[0] = mi;
1097 }
1098 }
Florin Corasf727db92016-06-23 15:01:58 +02001099 /* new mapping */
1100 else
Florin Corasa2157cf2016-08-16 21:09:14 +02001101 {
Filip Tehlard5fcc462016-10-17 16:20:18 +02001102 remove_overlapping_sub_prefixes (lcm, eid, 0 == ls_args->locators);
1103
Florin Corasa2157cf2016-08-16 21:09:14 +02001104 ls_args->is_add = 1;
1105 ls_args->index = ~0;
Florin Corasf727db92016-06-23 15:01:58 +02001106
Florin Corasa2157cf2016-08-16 21:09:14 +02001107 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
Florin Corasf727db92016-06-23 15:01:58 +02001108
Florin Corasa2157cf2016-08-16 21:09:14 +02001109 /* add mapping */
1110 gid_address_copy (&m_args->eid, eid);
1111 m_args->is_add = 1;
1112 m_args->action = action;
1113 m_args->locator_set_index = ls_index;
Filip Tehlar3cd9e732016-08-23 10:52:44 +02001114 m_args->is_static = is_static;
Filip Tehlar9677a942016-11-28 10:23:31 +01001115 m_args->ttl = ttl;
Florin Corasa2157cf2016-08-16 21:09:14 +02001116 vnet_lisp_map_cache_add_del (m_args, &dst_map_index);
Florin Corasf727db92016-06-23 15:01:58 +02001117
Florin Corasa2157cf2016-08-16 21:09:14 +02001118 if (res_map_index)
1119 res_map_index[0] = dst_map_index;
1120 }
Filip Tehlar195bcee2016-05-13 17:37:35 +02001121 }
Florin Corasf727db92016-06-23 15:01:58 +02001122 else
1123 {
Florin Coras71893ac2016-07-10 20:09:32 +02001124 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02001125 {
1126 clib_warning ("cannot delete mapping for eid %U",
1127 format_gid_address, eid);
1128 return -1;
1129 }
Florin Corasf727db92016-06-23 15:01:58 +02001130
1131 m_args->is_add = 0;
Florin Coras71893ac2016-07-10 20:09:32 +02001132 gid_address_copy (&m_args->eid, eid);
Florin Corasf727db92016-06-23 15:01:58 +02001133 m_args->locator_set_index = old_map->locator_set_index;
1134
1135 /* delete mapping associated from map-cache */
1136 vnet_lisp_map_cache_add_del (m_args, 0);
1137
1138 ls_args->is_add = 0;
1139 ls_args->index = old_map->locator_set_index;
1140 /* delete locator set */
1141 vnet_lisp_add_del_locator_set (ls_args, 0);
Filip Tehlarb93222f2016-07-07 09:58:08 +02001142
Filip Tehlar9677a942016-11-28 10:23:31 +01001143 /* delete timer associated to the mapping if any */
1144 if (old_map->timer_set)
1145 mapping_delete_timer (lcm, mi);
1146
Filip Tehlarb93222f2016-07-07 09:58:08 +02001147 /* return old mapping index */
Andrej Kozemcak438109d2016-07-22 12:54:12 +02001148 if (res_map_index)
Florin Corasa2157cf2016-08-16 21:09:14 +02001149 res_map_index[0] = mi;
Florin Corasf727db92016-06-23 15:01:58 +02001150 }
1151
Filip Tehlar195bcee2016-05-13 17:37:35 +02001152 /* success */
Florin Corasf727db92016-06-23 15:01:58 +02001153 return 0;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001154}
1155
Filip Tehlar58f886a2016-05-30 15:57:40 +02001156int
Florin Corasf727db92016-06-23 15:01:58 +02001157vnet_lisp_clear_all_remote_adjacencies (void)
Filip Tehlar58f886a2016-05-30 15:57:40 +02001158{
1159 int rv = 0;
Florin Corasa2157cf2016-08-16 21:09:14 +02001160 u32 mi, *map_indices = 0, *map_indexp;
1161 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1162 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1163 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
Filip Tehlar58f886a2016-05-30 15:57:40 +02001164
Florin Corasa2157cf2016-08-16 21:09:14 +02001165 /* *INDENT-OFF* */
Filip Tehlar58f886a2016-05-30 15:57:40 +02001166 pool_foreach_index (mi, lcm->mapping_pool,
Florin Corasa2157cf2016-08-16 21:09:14 +02001167 ({
1168 vec_add1 (map_indices, mi);
1169 }));
1170 /* *INDENT-ON* */
Filip Tehlar58f886a2016-05-30 15:57:40 +02001171
1172 vec_foreach (map_indexp, map_indices)
Florin Corasa2157cf2016-08-16 21:09:14 +02001173 {
1174 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1175 if (!map->local)
1176 {
1177 dp_del_fwd_entry (lcm, 0, map_indexp[0]);
Filip Tehlar58f886a2016-05-30 15:57:40 +02001178
Florin Corasa2157cf2016-08-16 21:09:14 +02001179 dm_args->is_add = 0;
1180 gid_address_copy (&dm_args->eid, &map->eid);
1181 dm_args->locator_set_index = map->locator_set_index;
Filip Tehlar58f886a2016-05-30 15:57:40 +02001182
Florin Corasa2157cf2016-08-16 21:09:14 +02001183 /* delete mapping associated to fwd entry */
1184 vnet_lisp_map_cache_add_del (dm_args, 0);
Filip Tehlar58f886a2016-05-30 15:57:40 +02001185
Florin Corasa2157cf2016-08-16 21:09:14 +02001186 ls->is_add = 0;
1187 ls->local = 0;
1188 ls->index = map->locator_set_index;
1189 /* delete locator set */
1190 rv = vnet_lisp_add_del_locator_set (ls, 0);
1191 if (rv != 0)
1192 goto cleanup;
1193 }
1194 }
Filip Tehlar58f886a2016-05-30 15:57:40 +02001195
1196cleanup:
1197 if (map_indices)
1198 vec_free (map_indices);
1199 return rv;
1200}
1201
Filip Tehlar195bcee2016-05-13 17:37:35 +02001202/**
Florin Coras71893ac2016-07-10 20:09:32 +02001203 * Adds adjacency or removes forwarding entry associated to remote mapping.
1204 * Note that adjacencies are not stored, they only result in forwarding entries
1205 * being created.
Florin Corasf727db92016-06-23 15:01:58 +02001206 */
Florin Corasf3dc11a2017-01-24 03:13:43 -08001207int
1208vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
Florin Corasf727db92016-06-23 15:01:58 +02001209{
Florin Corasf3dc11a2017-01-24 03:13:43 -08001210 lisp_cp_main_t *lcm = &lisp_control_main;
Florin Coras71893ac2016-07-10 20:09:32 +02001211 u32 local_mi, remote_mi = ~0;
Florin Corasf727db92016-06-23 15:01:58 +02001212
1213 if (vnet_lisp_enable_disable_status () == 0)
1214 {
1215 clib_warning ("LISP is disabled!");
1216 return VNET_API_ERROR_LISP_DISABLED;
1217 }
1218
Filip Tehlar69a9b762016-09-23 10:00:52 +02001219 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
Florin Corasf3dc11a2017-01-24 03:13:43 -08001220 &a->reid, &a->leid);
Florin Coras71893ac2016-07-10 20:09:32 +02001221 if (GID_LOOKUP_MISS == remote_mi)
1222 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001223 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
Florin Corasf3dc11a2017-01-24 03:13:43 -08001224 format_gid_address, &a->reid);
Florin Corasf727db92016-06-23 15:01:58 +02001225
Florin Coras71893ac2016-07-10 20:09:32 +02001226 return -1;
1227 }
1228
Florin Corasf3dc11a2017-01-24 03:13:43 -08001229 if (a->is_add)
Florin Corasf727db92016-06-23 15:01:58 +02001230 {
1231 /* TODO 1) check if src/dst 2) once we have src/dst working, use it in
1232 * delete*/
1233
1234 /* check if source eid has an associated mapping. If pitr mode is on,
1235 * just use the pitr's mapping */
Florin Coras71893ac2016-07-10 20:09:32 +02001236 local_mi = lcm->lisp_pitr ? lcm->pitr_map_index :
Florin Corasf3dc11a2017-01-24 03:13:43 -08001237 gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->leid);
Florin Corasf727db92016-06-23 15:01:58 +02001238
Florin Coras71893ac2016-07-10 20:09:32 +02001239 if (GID_LOOKUP_MISS == local_mi)
Florin Corasa2157cf2016-08-16 21:09:14 +02001240 {
1241 clib_warning ("Local eid %U not found. Cannot add adjacency!",
Florin Corasf3dc11a2017-01-24 03:13:43 -08001242 format_gid_address, &a->leid);
Florin Corasf727db92016-06-23 15:01:58 +02001243
Florin Corasa2157cf2016-08-16 21:09:14 +02001244 return -1;
1245 }
Florin Corasf727db92016-06-23 15:01:58 +02001246
Florin Coras71893ac2016-07-10 20:09:32 +02001247 /* update forwarding */
1248 dp_add_fwd_entry (lcm, local_mi, remote_mi);
Florin Corasf727db92016-06-23 15:01:58 +02001249 }
1250 else
Florin Coras71893ac2016-07-10 20:09:32 +02001251 dp_del_fwd_entry (lcm, 0, remote_mi);
Florin Corasf727db92016-06-23 15:01:58 +02001252
1253 return 0;
1254}
1255
1256int
Florin Corasdca88042016-09-14 16:01:38 +02001257vnet_lisp_set_map_request_mode (u8 mode)
1258{
1259 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1260
1261 if (vnet_lisp_enable_disable_status () == 0)
1262 {
1263 clib_warning ("LISP is disabled!");
1264 return VNET_API_ERROR_LISP_DISABLED;
1265 }
1266
1267 if (mode >= _MR_MODE_MAX)
1268 {
1269 clib_warning ("Invalid LISP map request mode %d!", mode);
1270 return VNET_API_ERROR_INVALID_ARGUMENT;
1271 }
1272
1273 lcm->map_request_mode = mode;
1274 return 0;
1275}
1276
Filip Tehlar53f09e32016-05-19 14:25:44 +02001277int
1278vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1279{
Florin Corasa2157cf2016-08-16 21:09:14 +02001280 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar53f09e32016-05-19 14:25:44 +02001281 u32 locator_set_index = ~0;
Florin Corasa2157cf2016-08-16 21:09:14 +02001282 mapping_t *m;
1283 uword *p;
Filip Tehlar53f09e32016-05-19 14:25:44 +02001284
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001285 if (vnet_lisp_enable_disable_status () == 0)
1286 {
1287 clib_warning ("LISP is disabled!");
1288 return VNET_API_ERROR_LISP_DISABLED;
1289 }
1290
Filip Tehlar53f09e32016-05-19 14:25:44 +02001291 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1292 if (!p)
1293 {
1294 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1295 return -1;
1296 }
1297 locator_set_index = p[0];
1298
1299 if (is_add)
1300 {
1301 pool_get (lcm->mapping_pool, m);
1302 m->locator_set_index = locator_set_index;
1303 m->local = 1;
Filip Tehlar38206ee2017-02-20 17:31:57 +01001304 m->pitr_set = 1;
Filip Tehlar53f09e32016-05-19 14:25:44 +02001305 lcm->pitr_map_index = m - lcm->mapping_pool;
1306
1307 /* enable pitr mode */
1308 lcm->lisp_pitr = 1;
1309 }
1310 else
1311 {
1312 /* remove pitr mapping */
1313 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1314
1315 /* disable pitr mode */
1316 lcm->lisp_pitr = 0;
1317 }
1318 return 0;
1319}
1320
Florin Corasba888e42017-01-24 11:38:18 -08001321/**
1322 * Configure Proxy-ETR
1323 *
1324 * @param ip PETR's IP address
1325 * @param is_add Flag that indicates if this is an addition or removal
1326 *
1327 * return 0 on success
1328 */
1329int
1330vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1331{
1332 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1333 u32 ls_index = ~0;
1334 mapping_t *m;
1335 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1336 locator_t loc;
1337
1338 if (vnet_lisp_enable_disable_status () == 0)
1339 {
1340 clib_warning ("LISP is disabled!");
1341 return VNET_API_ERROR_LISP_DISABLED;
1342 }
1343
1344 memset (ls_args, 0, sizeof (*ls_args));
1345
1346 if (is_add)
1347 {
1348 /* Create dummy petr locator-set */
Florin Corasb69259a2017-03-09 14:39:54 -08001349 memset (&loc, 0, sizeof (loc));
Florin Corasba888e42017-01-24 11:38:18 -08001350 gid_address_from_ip (&loc.address, ip);
1351 loc.priority = 1;
1352 loc.state = loc.weight = 1;
Florin Coras2743cc42017-01-29 16:42:20 -08001353 loc.local = 0;
Florin Corasba888e42017-01-24 11:38:18 -08001354
1355 ls_args->is_add = 1;
1356 ls_args->index = ~0;
1357 vec_add1 (ls_args->locators, loc);
1358 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1359
1360 /* Add petr mapping */
1361 pool_get (lcm->mapping_pool, m);
1362 m->locator_set_index = ls_index;
1363 lcm->petr_map_index = m - lcm->mapping_pool;
1364
1365 /* Enable use-petr */
1366 lcm->flags |= LISP_FLAG_USE_PETR;
1367 }
1368 else
1369 {
1370 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1371
1372 /* Remove petr locator */
1373 ls_args->is_add = 0;
1374 ls_args->index = m->locator_set_index;
1375 vnet_lisp_add_del_locator_set (ls_args, 0);
1376
1377 /* Remove petr mapping */
1378 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1379
1380 /* Disable use-petr */
1381 lcm->flags &= ~LISP_FLAG_USE_PETR;
1382 }
1383 return 0;
1384}
1385
Florin Corase127a7e2016-02-18 22:20:01 +01001386/* cleans locator to locator-set data and removes locators not part of
1387 * any locator-set */
1388static void
1389clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1390{
Filip Tehlard1c5cc32016-05-30 10:39:20 +02001391 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
Florin Corasa2157cf2016-08-16 21:09:14 +02001392 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1393 for (i = 0; i < vec_len (ls->locator_indices); i++)
Florin Corase127a7e2016-02-18 22:20:01 +01001394 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001395 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1396 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1397 loc_indexp[0]);
1398 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1399 {
1400 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1401 if (ls_indexp[0] == lsi)
1402 break;
1403 }
Florin Corase127a7e2016-02-18 22:20:01 +01001404
Florin Corasa2157cf2016-08-16 21:09:14 +02001405 /* delete index for removed locator-set */
1406 vec_del1 (ls_indexes[0], j);
Florin Corase127a7e2016-02-18 22:20:01 +01001407
1408 /* delete locator if it's part of no locator-set */
1409 if (vec_len (ls_indexes[0]) == 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02001410 {
1411 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1412 vec_add1 (to_be_deleted, i);
1413 }
Filip Tehlard1c5cc32016-05-30 10:39:20 +02001414 }
1415
1416 if (to_be_deleted)
1417 {
1418 for (i = 0; i < vec_len (to_be_deleted); i++)
Florin Corasa2157cf2016-08-16 21:09:14 +02001419 {
1420 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1421 vec_del1 (ls->locator_indices, loc_indexp[0]);
1422 }
Filip Tehlard1c5cc32016-05-30 10:39:20 +02001423 vec_free (to_be_deleted);
Florin Corase127a7e2016-02-18 22:20:01 +01001424 }
1425}
Filip Tehlard1c5cc32016-05-30 10:39:20 +02001426
Florin Corasf727db92016-06-23 15:01:58 +02001427static inline uword *
1428get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001429{
Florin Corasa2157cf2016-08-16 21:09:14 +02001430 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001431
Florin Corasa2157cf2016-08-16 21:09:14 +02001432 ASSERT (a != NULL);
1433 ASSERT (p != NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001434
1435 /* find locator-set */
1436 if (a->local)
1437 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001438 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001439 }
1440 else
1441 {
1442 *p = a->index;
1443 }
1444
1445 return p;
1446}
1447
Florin Corasf727db92016-06-23 15:01:58 +02001448static inline int
1449is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
Florin Corasa2157cf2016-08-16 21:09:14 +02001450 locator_t * loc)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001451{
Florin Corasa2157cf2016-08-16 21:09:14 +02001452 locator_t *itloc;
1453 u32 *locit;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001454
Florin Corasa2157cf2016-08-16 21:09:14 +02001455 ASSERT (ls != NULL);
1456 ASSERT (loc != NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001457
Florin Corasa2157cf2016-08-16 21:09:14 +02001458 vec_foreach (locit, ls->locator_indices)
1459 {
1460 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1461 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1462 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1463 {
1464 clib_warning ("Duplicate locator");
1465 return VNET_API_ERROR_VALUE_EXIST;
1466 }
1467 }
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001468
1469 return 0;
1470}
1471
Florin Corasf727db92016-06-23 15:01:58 +02001472static inline void
Florin Corasa2157cf2016-08-16 21:09:14 +02001473remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1474 u32 ls_index, u32 loc_id)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001475{
Florin Corasa2157cf2016-08-16 21:09:14 +02001476 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1477 u32 **ls_indexes = NULL;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001478
Florin Corasa2157cf2016-08-16 21:09:14 +02001479 ASSERT (ls != NULL);
1480 ASSERT (locit != NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001481
Florin Corasa2157cf2016-08-16 21:09:14 +02001482 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1483 pool_put_index (lcm->locator_pool, locit[0]);
1484 vec_del1 (ls->locator_indices, loc_id);
1485 vec_del1 (ls_indexes[0], ls_index);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001486}
1487
1488int
1489vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
Florin Corasa2157cf2016-08-16 21:09:14 +02001490 locator_set_t * ls, u32 * ls_result)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001491{
Florin Corasa2157cf2016-08-16 21:09:14 +02001492 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1493 locator_t *loc = NULL, *itloc = NULL;
1494 uword _p = (u32) ~ 0, *p = &_p;
1495 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001496 u32 loc_id = ~0;
1497 int ret = 0;
1498
Florin Corasa2157cf2016-08-16 21:09:14 +02001499 ASSERT (a != NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001500
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001501 if (vnet_lisp_enable_disable_status () == 0)
1502 {
1503 clib_warning ("LISP is disabled!");
1504 return VNET_API_ERROR_LISP_DISABLED;
1505 }
1506
Florin Corasa2157cf2016-08-16 21:09:14 +02001507 p = get_locator_set_index (a, p);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001508 if (!p)
1509 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001510 clib_warning ("locator-set %v doesn't exist", a->name);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001511 return VNET_API_ERROR_INVALID_ARGUMENT;
1512 }
1513
1514 if (ls == 0)
1515 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001516 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001517 if (!ls)
Florin Corasa2157cf2016-08-16 21:09:14 +02001518 {
1519 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1520 p[0]);
1521 return VNET_API_ERROR_INVALID_ARGUMENT;
1522 }
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001523 }
1524
1525 if (a->is_add)
1526 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001527 if (ls_result)
1528 ls_result[0] = p[0];
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001529
Florin Corasa2157cf2016-08-16 21:09:14 +02001530 /* allocate locators */
1531 vec_foreach (itloc, a->locators)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001532 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001533 ret = is_locator_in_locator_set (lcm, ls, itloc);
1534 if (0 != ret)
1535 {
1536 return ret;
1537 }
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001538
Florin Corasa2157cf2016-08-16 21:09:14 +02001539 pool_get (lcm->locator_pool, loc);
1540 loc[0] = itloc[0];
1541 loc_index = loc - lcm->locator_pool;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001542
Florin Corasa2157cf2016-08-16 21:09:14 +02001543 vec_add1 (ls->locator_indices, loc_index);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001544
Florin Corasa2157cf2016-08-16 21:09:14 +02001545 vec_validate (lcm->locator_to_locator_sets, loc_index);
1546 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1547 loc_index);
Filip Tehlarc5bb0d62016-09-02 12:14:31 +02001548 vec_add1 (ls_indexes[0], p[0]);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001549 }
Florin Corasa2157cf2016-08-16 21:09:14 +02001550 }
1551 else
1552 {
1553 ls_index = p[0];
1554
1555 itloc = a->locators;
1556 loc_id = 0;
1557 vec_foreach (locit, ls->locator_indices)
1558 {
1559 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1560
1561 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
1562 {
1563 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1564 }
1565 if (0 == loc->local &&
1566 !gid_address_cmp (&loc->address, &itloc->address))
1567 {
1568 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1569 }
1570
1571 loc_id++;
1572 }
1573 }
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001574
1575 return 0;
1576}
1577
Florin Corase127a7e2016-02-18 22:20:01 +01001578int
1579vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
Florin Corasa2157cf2016-08-16 21:09:14 +02001580 u32 * ls_result)
Florin Corase127a7e2016-02-18 22:20:01 +01001581{
Florin Corasa2157cf2016-08-16 21:09:14 +02001582 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1583 locator_set_t *ls;
1584 uword _p = (u32) ~ 0, *p = &_p;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001585 u32 ls_index;
Florin Corasa2157cf2016-08-16 21:09:14 +02001586 u32 **eid_indexes;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001587 int ret = 0;
Florin Corase127a7e2016-02-18 22:20:01 +01001588
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001589 if (vnet_lisp_enable_disable_status () == 0)
1590 {
1591 clib_warning ("LISP is disabled!");
1592 return VNET_API_ERROR_LISP_DISABLED;
1593 }
1594
Florin Corase127a7e2016-02-18 22:20:01 +01001595 if (a->is_add)
1596 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001597 p = get_locator_set_index (a, p);
Florin Corase127a7e2016-02-18 22:20:01 +01001598
1599 /* overwrite */
Florin Corasa2157cf2016-08-16 21:09:14 +02001600 if (p && p[0] != (u32) ~ 0)
1601 {
1602 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1603 if (!ls)
1604 {
1605 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1606 p[0]);
1607 return -1;
1608 }
Florin Corase127a7e2016-02-18 22:20:01 +01001609
Florin Corasa2157cf2016-08-16 21:09:14 +02001610 /* clean locator to locator-set vectors and remove locators if
1611 * they're not part of another locator-set */
1612 clean_locator_to_locator_set (lcm, p[0]);
Florin Corase127a7e2016-02-18 22:20:01 +01001613
Florin Corasa2157cf2016-08-16 21:09:14 +02001614 /* remove locator indices from locator set */
1615 vec_free (ls->locator_indices);
Florin Corase127a7e2016-02-18 22:20:01 +01001616
Florin Corasa2157cf2016-08-16 21:09:14 +02001617 ls_index = p[0];
Florin Corase127a7e2016-02-18 22:20:01 +01001618
Florin Corasa2157cf2016-08-16 21:09:14 +02001619 if (ls_result)
1620 ls_result[0] = p[0];
1621 }
Florin Corase127a7e2016-02-18 22:20:01 +01001622 /* new locator-set */
1623 else
Florin Corasa2157cf2016-08-16 21:09:14 +02001624 {
1625 pool_get (lcm->locator_set_pool, ls);
1626 memset (ls, 0, sizeof (*ls));
1627 ls_index = ls - lcm->locator_set_pool;
Florin Corase127a7e2016-02-18 22:20:01 +01001628
Florin Corasa2157cf2016-08-16 21:09:14 +02001629 if (a->local)
1630 {
1631 ls->name = vec_dup (a->name);
Florin Corase127a7e2016-02-18 22:20:01 +01001632
Florin Corasa2157cf2016-08-16 21:09:14 +02001633 if (!lcm->locator_set_index_by_name)
1634 lcm->locator_set_index_by_name = hash_create_vec (
1635 /* size */
1636 0,
1637 sizeof
1638 (ls->name
1639 [0]),
1640 sizeof
1641 (uword));
1642 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
1643 ls_index);
Florin Corase127a7e2016-02-18 22:20:01 +01001644
Florin Corasa2157cf2016-08-16 21:09:14 +02001645 /* mark as local locator-set */
1646 vec_add1 (lcm->local_locator_set_indexes, ls_index);
1647 }
1648 ls->local = a->local;
1649 if (ls_result)
1650 ls_result[0] = ls_index;
1651 }
Florin Corase127a7e2016-02-18 22:20:01 +01001652
Florin Corasa2157cf2016-08-16 21:09:14 +02001653 ret = vnet_lisp_add_del_locator (a, ls, NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001654 if (0 != ret)
Florin Corasa2157cf2016-08-16 21:09:14 +02001655 {
1656 return ret;
1657 }
Florin Corase127a7e2016-02-18 22:20:01 +01001658 }
1659 else
1660 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001661 p = get_locator_set_index (a, p);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001662 if (!p)
Florin Corasa2157cf2016-08-16 21:09:14 +02001663 {
1664 clib_warning ("locator-set %v doesn't exists", a->name);
1665 return -1;
1666 }
Florin Corase127a7e2016-02-18 22:20:01 +01001667
Florin Corasa2157cf2016-08-16 21:09:14 +02001668 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
Florin Corase127a7e2016-02-18 22:20:01 +01001669 if (!ls)
Florin Corasa2157cf2016-08-16 21:09:14 +02001670 {
1671 clib_warning ("locator-set with index %d doesn't exists", p[0]);
1672 return -1;
1673 }
Florin Corase127a7e2016-02-18 22:20:01 +01001674
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001675 if (lcm->mreq_itr_rlocs == p[0])
Florin Corasa2157cf2016-08-16 21:09:14 +02001676 {
1677 clib_warning ("Can't delete the locator-set used to constrain "
1678 "the itr-rlocs in map-requests!");
1679 return -1;
1680 }
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001681
Florin Corasa2157cf2016-08-16 21:09:14 +02001682 if (vec_len (lcm->locator_set_to_eids) != 0)
1683 {
1684 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
1685 if (vec_len (eid_indexes[0]) != 0)
1686 {
1687 clib_warning
1688 ("Can't delete a locator that supports a mapping!");
1689 return -1;
1690 }
1691 }
Andrej Kozemcakb92feb62016-03-31 13:51:42 +02001692
1693 /* clean locator to locator-sets data */
1694 clean_locator_to_locator_set (lcm, p[0]);
1695
1696 if (ls->local)
Florin Corasa2157cf2016-08-16 21:09:14 +02001697 {
1698 u32 it, lsi;
Andrej Kozemcakb92feb62016-03-31 13:51:42 +02001699
Florin Corasa2157cf2016-08-16 21:09:14 +02001700 vec_foreach_index (it, lcm->local_locator_set_indexes)
1701 {
1702 lsi = vec_elt (lcm->local_locator_set_indexes, it);
1703 if (lsi == p[0])
1704 {
1705 vec_del1 (lcm->local_locator_set_indexes, it);
1706 break;
1707 }
1708 }
1709 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
1710 }
1711 vec_free (ls->name);
1712 vec_free (ls->locator_indices);
1713 pool_put (lcm->locator_set_pool, ls);
Andrej Kozemcakb92feb62016-03-31 13:51:42 +02001714 }
1715 return 0;
1716}
1717
Filip Tehlar397fd7d2016-10-26 14:31:24 +02001718int
1719vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
1720{
1721 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1722
1723 lcm->rloc_probing = is_enable;
1724 return 0;
1725}
1726
1727int
1728vnet_lisp_map_register_enable_disable (u8 is_enable)
1729{
1730 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1731
1732 lcm->map_registering = is_enable;
1733 return 0;
1734}
1735
Filip Tehlar46d4e362016-05-09 09:39:26 +02001736clib_error_t *
Florin Corasf727db92016-06-23 15:01:58 +02001737vnet_lisp_enable_disable (u8 is_enable)
Filip Tehlar46d4e362016-05-09 09:39:26 +02001738{
Florin Coras1a1adc72016-07-22 01:45:30 +02001739 u32 vni, dp_table;
Florin Corasa2157cf2016-08-16 21:09:14 +02001740 clib_error_t *error = 0;
1741 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1742 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
Filip Tehlar46d4e362016-05-09 09:39:26 +02001743
Florin Corasf727db92016-06-23 15:01:58 +02001744 a->is_en = is_enable;
Filip Tehlar46d4e362016-05-09 09:39:26 +02001745 error = vnet_lisp_gpe_enable_disable (a);
1746 if (error)
1747 {
1748 return clib_error_return (0, "failed to %s data-plane!",
Florin Corasa2157cf2016-08-16 21:09:14 +02001749 a->is_en ? "enable" : "disable");
Filip Tehlar46d4e362016-05-09 09:39:26 +02001750 }
1751
Florin Corasf727db92016-06-23 15:01:58 +02001752 if (is_enable)
Filip Tehlar46d4e362016-05-09 09:39:26 +02001753 {
Florin Coras1a1adc72016-07-22 01:45:30 +02001754 /* enable all l2 and l3 ifaces */
Florin Corasa2157cf2016-08-16 21:09:14 +02001755
1756 /* *INDENT-OFF* */
Florin Coras1a1adc72016-07-22 01:45:30 +02001757 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
1758 dp_add_del_iface(lcm, vni, 0, 1);
1759 }));
Florin Coras1a1adc72016-07-22 01:45:30 +02001760 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
1761 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1);
Florin Corasf727db92016-06-23 15:01:58 +02001762 }));
Florin Corasa2157cf2016-08-16 21:09:14 +02001763 /* *INDENT-ON* */
Filip Tehlar46d4e362016-05-09 09:39:26 +02001764 }
1765 else
1766 {
Florin Corasf727db92016-06-23 15:01:58 +02001767 /* clear interface table */
Florin Corasa2157cf2016-08-16 21:09:14 +02001768 hash_free (lcm->fwd_entry_by_mapping_index);
1769 pool_free (lcm->fwd_entry_pool);
Filip Tehlar46d4e362016-05-09 09:39:26 +02001770 }
1771
1772 /* update global flag */
Florin Corasf727db92016-06-23 15:01:58 +02001773 lcm->is_enabled = is_enable;
Filip Tehlar46d4e362016-05-09 09:39:26 +02001774
1775 return 0;
1776}
1777
Filip Tehlar46d4e362016-05-09 09:39:26 +02001778u8
1779vnet_lisp_enable_disable_status (void)
1780{
Florin Corasa2157cf2016-08-16 21:09:14 +02001781 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar46d4e362016-05-09 09:39:26 +02001782 return lcm->is_enabled;
1783}
1784
Florin Corase127a7e2016-02-18 22:20:01 +01001785int
1786vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
1787{
Florin Corasa2157cf2016-08-16 21:09:14 +02001788 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Florin Corase127a7e2016-02-18 22:20:01 +01001789 u32 i;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02001790 lisp_msmr_t _mr, *mr = &_mr;
Florin Corase127a7e2016-02-18 22:20:01 +01001791
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001792 if (vnet_lisp_enable_disable_status () == 0)
1793 {
1794 clib_warning ("LISP is disabled!");
1795 return VNET_API_ERROR_LISP_DISABLED;
1796 }
1797
Florin Corase127a7e2016-02-18 22:20:01 +01001798 if (a->is_add)
1799 {
Filip Tehlara5abdeb2016-07-18 17:35:40 +02001800
1801 if (get_map_resolver (&a->address))
Florin Corasa2157cf2016-08-16 21:09:14 +02001802 {
1803 clib_warning ("map-resolver %U already exists!", format_ip_address,
1804 &a->address);
1805 return -1;
1806 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02001807
1808 memset (mr, 0, sizeof (*mr));
Florin Corasa2157cf2016-08-16 21:09:14 +02001809 ip_address_copy (&mr->address, &a->address);
1810 vec_add1 (lcm->map_resolvers, *mr);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02001811
1812 if (vec_len (lcm->map_resolvers) == 1)
Florin Corasa2157cf2016-08-16 21:09:14 +02001813 lcm->do_map_resolver_election = 1;
Florin Corase127a7e2016-02-18 22:20:01 +01001814 }
1815 else
1816 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001817 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
1818 {
1819 mr = vec_elt_at_index (lcm->map_resolvers, i);
1820 if (!ip_address_cmp (&mr->address, &a->address))
1821 {
1822 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
1823 lcm->do_map_resolver_election = 1;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02001824
Florin Corasa2157cf2016-08-16 21:09:14 +02001825 vec_del1 (lcm->map_resolvers, i);
1826 break;
1827 }
1828 }
Florin Corase127a7e2016-02-18 22:20:01 +01001829 }
1830 return 0;
1831}
1832
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001833int
1834vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
1835{
Florin Corasa2157cf2016-08-16 21:09:14 +02001836 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1837 uword *p = 0;
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001838
Florin Corasf727db92016-06-23 15:01:58 +02001839 if (vnet_lisp_enable_disable_status () == 0)
1840 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001841 clib_warning ("LISP is disabled!");
Florin Corasf727db92016-06-23 15:01:58 +02001842 return VNET_API_ERROR_LISP_DISABLED;
1843 }
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001844
1845 if (a->is_add)
1846 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001847 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001848 if (!p)
Florin Corasa2157cf2016-08-16 21:09:14 +02001849 {
1850 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
1851 return VNET_API_ERROR_INVALID_ARGUMENT;
1852 }
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001853
1854 lcm->mreq_itr_rlocs = p[0];
1855 }
1856 else
1857 {
1858 lcm->mreq_itr_rlocs = ~0;
1859 }
1860
1861 return 0;
1862}
1863
Florin Corase127a7e2016-02-18 22:20:01 +01001864/* Statistics (not really errors) */
1865#define foreach_lisp_cp_lookup_error \
1866_(DROP, "drop") \
1867_(MAP_REQUESTS_SENT, "map-request sent")
1868
Florin Corasa2157cf2016-08-16 21:09:14 +02001869static char *lisp_cp_lookup_error_strings[] = {
Florin Corase127a7e2016-02-18 22:20:01 +01001870#define _(sym,string) string,
1871 foreach_lisp_cp_lookup_error
1872#undef _
1873};
1874
1875typedef enum
1876{
1877#define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
Florin Corasa2157cf2016-08-16 21:09:14 +02001878 foreach_lisp_cp_lookup_error
Florin Corase127a7e2016-02-18 22:20:01 +01001879#undef _
1880 LISP_CP_LOOKUP_N_ERROR,
1881} lisp_cp_lookup_error_t;
1882
1883typedef enum
1884{
1885 LISP_CP_LOOKUP_NEXT_DROP,
Florin Corase127a7e2016-02-18 22:20:01 +01001886 LISP_CP_LOOKUP_N_NEXT,
1887} lisp_cp_lookup_next_t;
1888
1889typedef struct
1890{
1891 gid_address_t dst_eid;
Andrej Kozemcak94e34762016-05-25 12:43:21 +02001892 ip_address_t map_resolver_ip;
Florin Corase127a7e2016-02-18 22:20:01 +01001893} lisp_cp_lookup_trace_t;
1894
1895u8 *
1896format_lisp_cp_lookup_trace (u8 * s, va_list * args)
1897{
1898 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1899 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
Florin Corasa2157cf2016-08-16 21:09:14 +02001900 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
Florin Corase127a7e2016-02-18 22:20:01 +01001901
1902 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
Florin Corasa2157cf2016-08-16 21:09:14 +02001903 format_ip_address, &t->map_resolver_ip, format_gid_address,
1904 &t->dst_eid);
Florin Corase127a7e2016-02-18 22:20:01 +01001905 return s;
1906}
1907
Florin Coras1c494842016-06-16 21:08:56 +02001908int
1909get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
Florin Corasa2157cf2016-08-16 21:09:14 +02001910 ip_address_t * sloc)
Florin Corasc2c90082016-06-13 18:37:15 +02001911{
Filip Tehlar397fd7d2016-10-26 14:31:24 +02001912 lisp_msmr_t *mrit;
Florin Corasa2157cf2016-08-16 21:09:14 +02001913 ip_address_t *a;
Florin Corase127a7e2016-02-18 22:20:01 +01001914
Florin Corasa2157cf2016-08-16 21:09:14 +02001915 if (vec_len (lcm->map_resolvers) == 0)
Florin Corase127a7e2016-02-18 22:20:01 +01001916 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001917 clib_warning ("No map-resolver configured");
Florin Coras1c494842016-06-16 21:08:56 +02001918 return 0;
Florin Corase127a7e2016-02-18 22:20:01 +01001919 }
1920
Florin Corasddfafb82016-05-13 18:09:56 +02001921 /* find the first mr ip we have a route to and the ip of the
1922 * iface that has a route to it */
Florin Corasa2157cf2016-08-16 21:09:14 +02001923 vec_foreach (mrit, lcm->map_resolvers)
1924 {
1925 a = &mrit->address;
1926 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
1927 {
1928 ip_address_copy (mr_ip, a);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02001929
Florin Corasa2157cf2016-08-16 21:09:14 +02001930 /* also update globals */
1931 return 1;
1932 }
1933 }
Florin Corasddfafb82016-05-13 18:09:56 +02001934
Florin Corasa2157cf2016-08-16 21:09:14 +02001935 clib_warning ("Can't find map-resolver and local interface ip!");
Florin Coras1c494842016-06-16 21:08:56 +02001936 return 0;
Florin Corasddfafb82016-05-13 18:09:56 +02001937}
Filip Tehlar254b0362016-04-07 10:04:34 +02001938
Filip Tehlarbeceab92016-04-20 17:21:55 +02001939static gid_address_t *
Filip Tehlar254b0362016-04-07 10:04:34 +02001940build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
1941{
Florin Corasa2157cf2016-08-16 21:09:14 +02001942 void *addr;
Filip Tehlar254b0362016-04-07 10:04:34 +02001943 u32 i;
Florin Corasa2157cf2016-08-16 21:09:14 +02001944 locator_t *loc;
1945 u32 *loc_indexp;
1946 ip_interface_address_t *ia = 0;
1947 gid_address_t gid_data, *gid = &gid_data;
1948 gid_address_t *rlocs = 0;
1949 ip_prefix_t *ippref = &gid_address_ippref (gid);
1950 ip_address_t *rloc = &ip_prefix_addr (ippref);
Filip Tehlar254b0362016-04-07 10:04:34 +02001951
Filip Tehlar324112f2016-06-02 16:07:38 +02001952 memset (gid, 0, sizeof (gid[0]));
Filip Tehlarbeceab92016-04-20 17:21:55 +02001953 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
Florin Corasa2157cf2016-08-16 21:09:14 +02001954 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
Filip Tehlar254b0362016-04-07 10:04:34 +02001955 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001956 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
Filip Tehlar254b0362016-04-07 10:04:34 +02001957 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
1958
Filip Tehlar254b0362016-04-07 10:04:34 +02001959 /* Add ipv4 locators first TODO sort them */
Florin Corasa2157cf2016-08-16 21:09:14 +02001960
1961 /* *INDENT-OFF* */
Filip Tehlar254b0362016-04-07 10:04:34 +02001962 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
1963 loc->sw_if_index, 1 /* unnumbered */,
1964 ({
Florin Coras1c494842016-06-16 21:08:56 +02001965 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
1966 ip_address_set (rloc, addr, IP4);
Florin Corasddfafb82016-05-13 18:09:56 +02001967 ip_prefix_len (ippref) = 32;
Andrej Kozemcak438109d2016-07-22 12:54:12 +02001968 ip_prefix_normalize (ippref);
Filip Tehlarbeceab92016-04-20 17:21:55 +02001969 vec_add1 (rlocs, gid[0]);
Filip Tehlar254b0362016-04-07 10:04:34 +02001970 }));
1971
Filip Tehlar254b0362016-04-07 10:04:34 +02001972 /* Add ipv6 locators */
1973 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
1974 loc->sw_if_index, 1 /* unnumbered */,
1975 ({
Florin Coras1c494842016-06-16 21:08:56 +02001976 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
1977 ip_address_set (rloc, addr, IP6);
Florin Corasddfafb82016-05-13 18:09:56 +02001978 ip_prefix_len (ippref) = 128;
Andrej Kozemcak438109d2016-07-22 12:54:12 +02001979 ip_prefix_normalize (ippref);
Filip Tehlarbeceab92016-04-20 17:21:55 +02001980 vec_add1 (rlocs, gid[0]);
Filip Tehlar254b0362016-04-07 10:04:34 +02001981 }));
Florin Corasa2157cf2016-08-16 21:09:14 +02001982 /* *INDENT-ON* */
1983
Filip Tehlar254b0362016-04-07 10:04:34 +02001984 }
1985 return rlocs;
1986}
1987
Florin Corase127a7e2016-02-18 22:20:01 +01001988static vlib_buffer_t *
Filip Tehlar397fd7d2016-10-26 14:31:24 +02001989build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
1990 ip_address_t * sloc, ip_address_t * rloc,
1991 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
1992{
1993 vlib_buffer_t *b;
1994 u32 bi;
1995 vlib_main_t *vm = lcm->vlib_main;
1996
1997 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
1998 {
1999 clib_warning ("Can't allocate buffer for Map-Request!");
2000 return 0;
2001 }
2002
2003 b = vlib_get_buffer (vm, bi);
2004
2005 /* leave some space for the encap headers */
2006 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2007
2008 /* put lisp msg */
2009 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
2010 1 /* rloc probe */ , nonce_res);
2011
2012 /* push outer ip header */
2013 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2014 rloc);
2015
2016 bi_res[0] = bi;
2017
2018 return b;
2019}
2020
2021static vlib_buffer_t *
Florin Corasa2157cf2016-08-16 21:09:14 +02002022build_encapsulated_map_request (lisp_cp_main_t * lcm,
2023 gid_address_t * seid, gid_address_t * deid,
2024 locator_set_t * loc_set, ip_address_t * mr_ip,
2025 ip_address_t * sloc, u8 is_smr_invoked,
2026 u64 * nonce_res, u32 * bi_res)
Florin Corase127a7e2016-02-18 22:20:01 +01002027{
Florin Corasa2157cf2016-08-16 21:09:14 +02002028 vlib_buffer_t *b;
Florin Corase127a7e2016-02-18 22:20:01 +01002029 u32 bi;
Florin Corasa2157cf2016-08-16 21:09:14 +02002030 gid_address_t *rlocs = 0;
2031 vlib_main_t *vm = lcm->vlib_main;
Florin Corase127a7e2016-02-18 22:20:01 +01002032
2033 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2034 {
2035 clib_warning ("Can't allocate buffer for Map-Request!");
2036 return 0;
2037 }
2038
2039 b = vlib_get_buffer (vm, bi);
2040
2041 /* leave some space for the encap headers */
2042 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2043
Filip Tehlar254b0362016-04-07 10:04:34 +02002044 /* get rlocs */
2045 rlocs = build_itr_rloc_list (lcm, loc_set);
2046
Filip Tehlard5fcc462016-10-17 16:20:18 +02002047 if (MR_MODE_SRC_DST == lcm->map_request_mode
2048 && GID_ADDR_SRC_DST != gid_address_type (deid))
Florin Corasdca88042016-09-14 16:01:38 +02002049 {
2050 gid_address_t sd;
2051 memset (&sd, 0, sizeof (sd));
2052 build_src_dst (&sd, seid, deid);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002053 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2054 0 /* rloc probe */ , nonce_res);
Florin Corasdca88042016-09-14 16:01:38 +02002055 }
2056 else
2057 {
2058 /* put lisp msg */
2059 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002060 0 /* rloc probe */ , nonce_res);
Florin Corasdca88042016-09-14 16:01:38 +02002061 }
Florin Corase127a7e2016-02-18 22:20:01 +01002062
2063 /* push ecm: udp-ip-lisp */
2064 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2065
Florin Corase127a7e2016-02-18 22:20:01 +01002066 /* push outer ip header */
Florin Corasddfafb82016-05-13 18:09:56 +02002067 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
Florin Corasa2157cf2016-08-16 21:09:14 +02002068 mr_ip);
Florin Corase127a7e2016-02-18 22:20:01 +01002069
2070 bi_res[0] = bi;
Filip Tehlar254b0362016-04-07 10:04:34 +02002071
Florin Corasa2157cf2016-08-16 21:09:14 +02002072 vec_free (rlocs);
Florin Corase127a7e2016-02-18 22:20:01 +01002073 return b;
2074}
2075
2076static void
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002077reset_pending_mr_counters (pending_map_request_t * r)
Florin Corase127a7e2016-02-18 22:20:01 +01002078{
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002079 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2080 r->retries_num = 0;
2081}
2082
2083static int
2084elect_map_resolver (lisp_cp_main_t * lcm)
2085{
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002086 lisp_msmr_t *mr;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002087
2088 vec_foreach (mr, lcm->map_resolvers)
Florin Corasa2157cf2016-08-16 21:09:14 +02002089 {
2090 if (!mr->is_down)
2091 {
2092 ip_address_copy (&lcm->active_map_resolver, &mr->address);
2093 lcm->do_map_resolver_election = 0;
2094 return 1;
2095 }
2096 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002097 return 0;
2098}
2099
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002100static void
2101free_map_register_records (mapping_t * maps)
2102{
2103 mapping_t *map;
2104 vec_foreach (map, maps) vec_free (map->locators);
2105
2106 vec_free (maps);
2107}
2108
2109static void
2110add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2111 ip_address_t * probed_loc)
2112{
2113 u32 *li;
2114 locator_t *loc, new;
2115 ip_interface_address_t *ia = 0;
2116 void *addr;
2117 ip_address_t *new_ip = &gid_address_ip (&new.address);
2118
2119 m->locators = 0;
2120 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2121 locator_set_index);
2122 vec_foreach (li, ls->locator_indices)
2123 {
2124 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2125 new = loc[0];
2126 if (loc->local)
2127 {
2128 /* *INDENT-OFF* */
2129 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2130 loc->sw_if_index, 1 /* unnumbered */,
2131 ({
2132 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2133 ia);
2134 ip_address_set (new_ip, addr, IP4);
2135 }));
2136
2137 /* Add ipv6 locators */
2138 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2139 loc->sw_if_index, 1 /* unnumbered */,
2140 ({
2141 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2142 ia);
2143 ip_address_set (new_ip, addr, IP6);
2144 }));
2145 /* *INDENT-ON* */
2146
2147 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2148 new.probed = 1;
2149 }
2150 vec_add1 (m->locators, new);
2151 }
2152}
2153
2154static mapping_t *
2155build_map_register_record_list (lisp_cp_main_t * lcm)
2156{
2157 mapping_t *recs = 0, rec, *m;
2158
2159 /* *INDENT-OFF* */
2160 pool_foreach(m, lcm->mapping_pool,
2161 {
2162 /* for now build only local mappings */
2163 if (!m->local)
2164 continue;
2165
2166 rec = m[0];
2167 add_locators (lcm, &rec, m->locator_set_index, NULL);
2168 vec_add1 (recs, rec);
2169 });
2170 /* *INDENT-ON* */
2171
2172 return recs;
2173}
2174
2175static int
2176update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2177 lisp_key_type_t key_id, u8 * key,
2178 u16 auth_data_len, u32 msg_len)
2179{
2180 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2181 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2182
2183 unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
2184 (unsigned char *) map_reg_hdr, msg_len, NULL,
2185 NULL);
2186 clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len);
2187
2188 return 0;
2189}
2190
2191static vlib_buffer_t *
2192build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2193 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2194 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2195 u32 * bi_res)
2196{
2197 void *map_reg_hdr;
2198 vlib_buffer_t *b;
2199 u32 bi, auth_data_len = 0, msg_len = 0;
2200 vlib_main_t *vm = lcm->vlib_main;
2201
2202 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2203 {
2204 clib_warning ("Can't allocate buffer for Map-Register!");
2205 return 0;
2206 }
2207
2208 b = vlib_get_buffer (vm, bi);
2209
2210 /* leave some space for the encap headers */
2211 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2212
2213 auth_data_len = auth_data_len_by_key_id (key_id);
2214 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2215 auth_data_len, nonce_res,
2216 &msg_len);
2217
2218 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2219 msg_len);
2220
2221 /* push outer ip header */
2222 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2223 ms_ip);
2224
2225 bi_res[0] = bi;
2226 return b;
2227}
2228
2229static int
2230get_egress_map_resolver_ip (lisp_cp_main_t * lcm, ip_address_t * ip)
2231{
2232 lisp_msmr_t *mr;
2233 while (lcm->do_map_resolver_election
2234 | (0 == ip_fib_get_first_egress_ip_for_dst (lcm,
2235 &lcm->active_map_resolver,
2236 ip)))
2237 {
2238 if (0 == elect_map_resolver (lcm))
2239 /* all map resolvers are down */
2240 {
2241 /* restart MR checking by marking all of them up */
2242 vec_foreach (mr, lcm->map_resolvers) mr->is_down = 0;
2243 return -1;
2244 }
2245 }
2246 return 0;
2247}
2248
Filip Tehlarcda70662017-01-16 10:30:03 +01002249/* CP output statistics */
2250#define foreach_lisp_cp_output_error \
2251_(MAP_REGISTERS_SENT, "map-registers sent") \
2252_(RLOC_PROBES_SENT, "rloc-probes sent")
2253
2254static char *lisp_cp_output_error_strings[] = {
2255#define _(sym,string) string,
2256 foreach_lisp_cp_output_error
2257#undef _
2258};
2259
2260typedef enum
2261{
2262#define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2263 foreach_lisp_cp_output_error
2264#undef _
2265 LISP_CP_OUTPUT_N_ERROR,
2266} lisp_cp_output_error_t;
2267
2268static uword
2269lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2270 vlib_frame_t * from_frame)
2271{
2272 return 0;
2273}
2274
2275/* dummy node used only for statistics */
2276/* *INDENT-OFF* */
2277VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2278 .function = lisp_cp_output,
2279 .name = "lisp-cp-output",
2280 .vector_size = sizeof (u32),
2281 .format_trace = format_lisp_cp_input_trace,
2282 .type = VLIB_NODE_TYPE_INTERNAL,
2283
2284 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2285 .error_strings = lisp_cp_output_error_strings,
2286
2287 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2288
2289 .next_nodes = {
2290 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2291 },
2292};
2293/* *INDENT-ON* */
2294
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002295static int
2296send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2297 u32 local_locator_set_index, ip_address_t * sloc,
2298 ip_address_t * rloc)
2299{
2300 locator_set_t *ls;
2301 u32 bi;
2302 vlib_buffer_t *b;
2303 vlib_frame_t *f;
2304 u64 nonce = 0;
2305 u32 next_index, *to_next;
2306 gid_address_t *itr_rlocs;
2307
2308 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2309 itr_rlocs = build_itr_rloc_list (lcm, ls);
2310
2311 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2312 vec_free (itr_rlocs);
2313 if (!b)
2314 return -1;
2315
2316 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2317
Filip Tehlar272c69e2017-02-15 16:40:35 +01002318 next_index = (ip_addr_version (rloc) == IP4) ?
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002319 ip4_lookup_node.index : ip6_lookup_node.index;
2320
2321 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2322
2323 /* Enqueue the packet */
2324 to_next = vlib_frame_vector_args (f);
2325 to_next[0] = bi;
2326 f->n_vectors = 1;
2327 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2328
2329 hash_set (lcm->map_register_messages_by_nonce, nonce, 0);
2330 return 0;
2331}
2332
2333static int
2334send_rloc_probes (lisp_cp_main_t * lcm)
2335{
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002336 u8 lprio = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002337 mapping_t *lm;
2338 fwd_entry_t *e;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002339 locator_pair_t *lp;
Filip Tehlarcda70662017-01-16 10:30:03 +01002340 u32 si, rloc_probes_sent = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002341
2342 /* *INDENT-OFF* */
2343 pool_foreach (e, lcm->fwd_entry_pool,
2344 {
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002345 if (vec_len (e->locator_pairs) == 0)
2346 continue;
2347
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002348 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2349 if (~0 == si)
2350 {
2351 clib_warning ("internal error: cannot find local eid %U in "
2352 "map-cache!", format_gid_address, &e->leid);
2353 continue;
2354 }
2355 lm = pool_elt_at_index (lcm->mapping_pool, si);
2356
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002357 /* get the best (lowest) priority */
2358 lprio = e->locator_pairs[0].priority;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002359
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002360 /* send rloc-probe for pair(s) with the best remote locator priority */
2361 vec_foreach (lp, e->locator_pairs)
2362 {
2363 if (lp->priority != lprio)
2364 break;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002365
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002366 /* get first remote locator */
2367 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2368 &lp->rmt_loc);
Filip Tehlarcda70662017-01-16 10:30:03 +01002369 rloc_probes_sent++;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002370 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002371 });
2372 /* *INDENT-ON* */
2373
Filip Tehlarcda70662017-01-16 10:30:03 +01002374 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2375 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2376 rloc_probes_sent);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002377 return 0;
2378}
2379
2380static int
2381send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2382{
Filip Tehlarcda70662017-01-16 10:30:03 +01002383 u32 bi, map_registers_sent = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002384 vlib_buffer_t *b;
2385 ip_address_t sloc;
2386 vlib_frame_t *f;
2387 u64 nonce = 0;
2388 u32 next_index, *to_next;
2389 ip_address_t *ms = 0;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002390 mapping_t *records, *r, *g;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002391
2392 // TODO: support multiple map servers and do election
2393 if (0 == vec_len (lcm->map_servers))
2394 return -1;
2395
2396 ms = &lcm->map_servers[0].address;
2397
2398 if (0 == ip_fib_get_first_egress_ip_for_dst (lcm, ms, &sloc))
2399 {
2400 clib_warning ("no eligible interface address found for %U!",
2401 format_ip_address, &lcm->map_servers[0]);
2402 return -1;
2403 }
2404
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002405 records = build_map_register_record_list (lcm);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002406 if (!records)
2407 return -1;
2408
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002409 vec_foreach (r, records)
2410 {
2411 u8 *key = r->key;
2412 u8 key_id = r->key_id;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002413
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002414 if (!key)
2415 continue; /* no secret key -> map-register cannot be sent */
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002416
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002417 g = 0;
2418 // TODO: group mappings that share common key
2419 vec_add1 (g, r[0]);
2420 b = build_map_register (lcm, &sloc, ms, &nonce, want_map_notif, g,
2421 key_id, key, &bi);
2422 vec_free (g);
2423 if (!b)
2424 continue;
2425
2426 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2427
2428 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2429 ip4_lookup_node.index : ip6_lookup_node.index;
2430
2431 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2432
2433 /* Enqueue the packet */
2434 to_next = vlib_frame_vector_args (f);
2435 to_next[0] = bi;
2436 f->n_vectors = 1;
2437 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
Filip Tehlarcda70662017-01-16 10:30:03 +01002438 map_registers_sent++;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002439
2440 hash_set (lcm->map_register_messages_by_nonce, nonce, 0);
2441 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002442 free_map_register_records (records);
2443
Filip Tehlarcda70662017-01-16 10:30:03 +01002444 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2445 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
2446 map_registers_sent);
2447
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002448 return 0;
2449}
2450
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002451#define send_encapsulated_map_request(lcm, seid, deid, smr) \
2452 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
2453
2454#define resend_encapsulated_map_request(lcm, seid, deid, smr) \
2455 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
2456
2457static int
Florin Corasa2157cf2016-08-16 21:09:14 +02002458_send_encapsulated_map_request (lisp_cp_main_t * lcm,
2459 gid_address_t * seid, gid_address_t * deid,
2460 u8 is_smr_invoked, u8 is_resend)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002461{
Florin Corasa2157cf2016-08-16 21:09:14 +02002462 u32 next_index, bi = 0, *to_next, map_index;
2463 vlib_buffer_t *b;
2464 vlib_frame_t *f;
Florin Corase127a7e2016-02-18 22:20:01 +01002465 u64 nonce = 0;
Florin Corasa2157cf2016-08-16 21:09:14 +02002466 locator_set_t *loc_set;
2467 mapping_t *map;
2468 pending_map_request_t *pmr, *duplicate_pmr = 0;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002469 ip_address_t sloc;
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002470 u32 ls_index;
Florin Corase127a7e2016-02-18 22:20:01 +01002471
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002472 /* if there is already a pending request remember it */
Florin Corasa2157cf2016-08-16 21:09:14 +02002473
2474 /* *INDENT-OFF* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002475 pool_foreach(pmr, lcm->pending_map_requests_pool,
2476 ({
2477 if (!gid_address_cmp (&pmr->src, seid)
2478 && !gid_address_cmp (&pmr->dst, deid))
2479 {
2480 duplicate_pmr = pmr;
2481 break;
2482 }
2483 }));
Florin Corasa2157cf2016-08-16 21:09:14 +02002484 /* *INDENT-ON* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002485
2486 if (!is_resend && duplicate_pmr)
2487 {
2488 /* don't send the request if there is a pending map request already */
2489 return 0;
2490 }
2491
Florin Corase127a7e2016-02-18 22:20:01 +01002492 /* get locator-set for seid */
Filip Tehlar53f09e32016-05-19 14:25:44 +02002493 if (!lcm->lisp_pitr)
Florin Corase127a7e2016-02-18 22:20:01 +01002494 {
Filip Tehlar53f09e32016-05-19 14:25:44 +02002495 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
2496 if (map_index == ~0)
Florin Corasa2157cf2016-08-16 21:09:14 +02002497 {
2498 clib_warning ("No local mapping found in eid-table for %U!",
2499 format_gid_address, seid);
2500 return -1;
2501 }
Filip Tehlar53f09e32016-05-19 14:25:44 +02002502
2503 map = pool_elt_at_index (lcm->mapping_pool, map_index);
2504
2505 if (!map->local)
Florin Corasa2157cf2016-08-16 21:09:14 +02002506 {
2507 clib_warning
2508 ("Mapping found for src eid %U is not marked as local!",
2509 format_gid_address, seid);
2510 return -1;
2511 }
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002512 ls_index = map->locator_set_index;
Filip Tehlar53f09e32016-05-19 14:25:44 +02002513 }
2514 else
2515 {
2516 map_index = lcm->pitr_map_index;
2517 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002518 ls_index = map->locator_set_index;
Florin Corase127a7e2016-02-18 22:20:01 +01002519 }
2520
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002521 /* overwrite locator set if map-request itr-rlocs configured */
2522 if (~0 != lcm->mreq_itr_rlocs)
2523 {
2524 ls_index = lcm->mreq_itr_rlocs;
2525 }
2526
2527 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
Florin Corase127a7e2016-02-18 22:20:01 +01002528
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002529 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002530 {
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002531 if (duplicate_pmr)
2532 duplicate_pmr->to_be_removed = 1;
2533 return -1;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002534 }
Florin Corasddfafb82016-05-13 18:09:56 +02002535
Florin Corase127a7e2016-02-18 22:20:01 +01002536 /* build the encapsulated map request */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002537 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
Florin Corasa2157cf2016-08-16 21:09:14 +02002538 &lcm->active_map_resolver,
2539 &sloc, is_smr_invoked, &nonce, &bi);
Florin Corase127a7e2016-02-18 22:20:01 +01002540
2541 if (!b)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002542 return -1;
Florin Corase127a7e2016-02-18 22:20:01 +01002543
Florin Corasf727db92016-06-23 15:01:58 +02002544 /* set fib index to default and lookup node */
Florin Corasa2157cf2016-08-16 21:09:14 +02002545 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2546 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2547 ip4_lookup_node.index : ip6_lookup_node.index;
Florin Corase127a7e2016-02-18 22:20:01 +01002548
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002549 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
Florin Corase127a7e2016-02-18 22:20:01 +01002550
2551 /* Enqueue the packet */
2552 to_next = vlib_frame_vector_args (f);
2553 to_next[0] = bi;
2554 f->n_vectors = 1;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002555 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
Florin Corase127a7e2016-02-18 22:20:01 +01002556
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002557 if (duplicate_pmr)
2558 /* if there is a pending request already update it */
2559 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002560 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
2561 {
2562 /* remove the oldest nonce */
2563 u64 CLIB_UNUSED (tmp), *nonce_del;
2564 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
2565 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
2566 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
2567 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002568
Florin Corasf4691cd2016-08-15 19:16:32 +02002569 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002570 hash_set (lcm->pending_map_requests_by_nonce, nonce,
Florin Corasa2157cf2016-08-16 21:09:14 +02002571 duplicate_pmr - lcm->pending_map_requests_pool);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002572 }
2573 else
2574 {
2575 /* add map-request to pending requests table */
Florin Corasa2157cf2016-08-16 21:09:14 +02002576 pool_get (lcm->pending_map_requests_pool, pmr);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002577 memset (pmr, 0, sizeof (*pmr));
2578 gid_address_copy (&pmr->src, seid);
2579 gid_address_copy (&pmr->dst, deid);
Florin Corasf4691cd2016-08-15 19:16:32 +02002580 clib_fifo_add1 (pmr->nonces, nonce);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002581 pmr->is_smr_invoked = is_smr_invoked;
2582 reset_pending_mr_counters (pmr);
2583 hash_set (lcm->pending_map_requests_by_nonce, nonce,
Florin Corasa2157cf2016-08-16 21:09:14 +02002584 pmr - lcm->pending_map_requests_pool);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002585 }
2586
2587 return 0;
Florin Corase127a7e2016-02-18 22:20:01 +01002588}
2589
2590static void
Florin Corasa2157cf2016-08-16 21:09:14 +02002591get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
Florin Corase127a7e2016-02-18 22:20:01 +01002592{
Florin Corasa2157cf2016-08-16 21:09:14 +02002593 ip4_header_t *ip4 = hdr;
2594 ip6_header_t *ip6;
Florin Corase127a7e2016-02-18 22:20:01 +01002595
2596 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
2597 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002598 ip_address_set (src, &ip4->src_address, IP4);
2599 ip_address_set (dst, &ip4->dst_address, IP4);
Florin Corase127a7e2016-02-18 22:20:01 +01002600 }
2601 else
2602 {
2603 ip6 = hdr;
Florin Corasa2157cf2016-08-16 21:09:14 +02002604 ip_address_set (src, &ip6->src_address, IP6);
2605 ip_address_set (dst, &ip6->dst_address, IP6);
Florin Corase127a7e2016-02-18 22:20:01 +01002606 }
2607}
2608
Filip Tehlar324112f2016-06-02 16:07:38 +02002609static u32
Florin Coras1a1adc72016-07-22 01:45:30 +02002610lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
Florin Corasa2157cf2016-08-16 21:09:14 +02002611 u8 version)
Filip Tehlar324112f2016-06-02 16:07:38 +02002612{
Florin Corasa2157cf2016-08-16 21:09:14 +02002613 uword *vnip;
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002614 u32 vni = ~0, table_id = ~0;
Filip Tehlar324112f2016-06-02 16:07:38 +02002615
Florin Coras87e40692016-09-22 18:02:17 +02002616 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
2617 IP4 ? FIB_PROTOCOL_IP4 :
2618 FIB_PROTOCOL_IP6),
2619 vnet_buffer
2620 (b)->sw_if_index
2621 [VLIB_RX]);
Filip Tehlar324112f2016-06-02 16:07:38 +02002622
2623 vnip = hash_get (lcm->vni_by_table_id, table_id);
2624 if (vnip)
2625 vni = vnip[0];
2626 else
2627 clib_warning ("vrf %d is not mapped to any vni!", table_id);
2628
2629 return vni;
2630}
2631
Florin Coras1a1adc72016-07-22 01:45:30 +02002632always_inline u32
2633lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
2634{
Florin Corasa2157cf2016-08-16 21:09:14 +02002635 uword *vnip;
Florin Coras1a1adc72016-07-22 01:45:30 +02002636 u32 vni = ~0;
2637 u32 sw_if_index0;
2638
Florin Corasa2157cf2016-08-16 21:09:14 +02002639 l2input_main_t *l2im = &l2input_main;
2640 l2_input_config_t *config;
2641 l2_bridge_domain_t *bd_config;
Florin Coras1a1adc72016-07-22 01:45:30 +02002642
Florin Corasa2157cf2016-08-16 21:09:14 +02002643 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
2644 config = vec_elt_at_index (l2im->configs, sw_if_index0);
Florin Coras1a1adc72016-07-22 01:45:30 +02002645 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
2646
2647 vnip = hash_get (lcm->vni_by_bd_id, bd_config->bd_id);
2648 if (vnip)
2649 vni = vnip[0];
2650 else
Florin Corasa2157cf2016-08-16 21:09:14 +02002651 clib_warning ("bridge domain %d is not mapped to any vni!",
2652 config->bd_index);
Florin Coras1a1adc72016-07-22 01:45:30 +02002653
2654 return vni;
2655}
2656
2657always_inline void
Florin Corasa2157cf2016-08-16 21:09:14 +02002658get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
2659 gid_address_t * src, gid_address_t * dst)
Florin Coras1a1adc72016-07-22 01:45:30 +02002660{
2661 u32 vni = 0;
2662 u16 type;
2663
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002664 memset (src, 0, sizeof (*src));
2665 memset (dst, 0, sizeof (*dst));
Florin Corasa2157cf2016-08-16 21:09:14 +02002666 type = vnet_buffer (b)->lisp.overlay_afi;
Florin Coras1a1adc72016-07-22 01:45:30 +02002667
2668 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
2669 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002670 ip4_header_t *ip;
Florin Coras1a1adc72016-07-22 01:45:30 +02002671 u8 version, preflen;
2672
Florin Corasa2157cf2016-08-16 21:09:14 +02002673 gid_address_type (src) = GID_ADDR_IP_PREFIX;
2674 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
Florin Coras1a1adc72016-07-22 01:45:30 +02002675
2676 ip = vlib_buffer_get_current (b);
Florin Corasa2157cf2016-08-16 21:09:14 +02002677 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
Florin Coras1a1adc72016-07-22 01:45:30 +02002678
Florin Corasa2157cf2016-08-16 21:09:14 +02002679 version = gid_address_ip_version (src);
Florin Coras1a1adc72016-07-22 01:45:30 +02002680 preflen = ip_address_max_len (version);
Florin Corasa2157cf2016-08-16 21:09:14 +02002681 gid_address_ippref_len (src) = preflen;
2682 gid_address_ippref_len (dst) = preflen;
Florin Coras1a1adc72016-07-22 01:45:30 +02002683
2684 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
2685 gid_address_vni (dst) = vni;
2686 gid_address_vni (src) = vni;
2687 }
2688 else if (LISP_AFI_MAC == type)
2689 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002690 ethernet_header_t *eh;
Florin Coras1a1adc72016-07-22 01:45:30 +02002691
2692 eh = vlib_buffer_get_current (b);
2693
Florin Corasa2157cf2016-08-16 21:09:14 +02002694 gid_address_type (src) = GID_ADDR_MAC;
2695 gid_address_type (dst) = GID_ADDR_MAC;
2696 mac_copy (&gid_address_mac (src), eh->src_address);
2697 mac_copy (&gid_address_mac (dst), eh->dst_address);
Florin Coras1a1adc72016-07-22 01:45:30 +02002698
2699 /* get vni */
2700 vni = lisp_get_vni_from_buffer_eth (lcm, b);
2701
2702 gid_address_vni (dst) = vni;
2703 gid_address_vni (src) = vni;
2704 }
Florin Corasce1b4c72017-01-26 14:25:34 -08002705 else if (LISP_AFI_LCAF == type)
2706 {
2707 /* Eventually extend this to support NSH and other */
2708 ASSERT (0);
2709 }
Florin Coras1a1adc72016-07-22 01:45:30 +02002710}
2711
Florin Corase127a7e2016-02-18 22:20:01 +01002712static uword
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002713lisp_cp_lookup_inline (vlib_main_t * vm,
2714 vlib_node_runtime_t * node,
2715 vlib_frame_t * from_frame, int overlay)
Florin Corase127a7e2016-02-18 22:20:01 +01002716{
Florin Corasa2157cf2016-08-16 21:09:14 +02002717 u32 *from, *to_next_drop, di, si;
2718 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Florin Corase127a7e2016-02-18 22:20:01 +01002719 u32 pkts_mapped = 0;
2720 uword n_left_from, n_left_to_next_drop;
2721
2722 from = vlib_frame_vector_args (from_frame);
2723 n_left_from = from_frame->n_vectors;
2724
2725 while (n_left_from > 0)
2726 {
2727 vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
Florin Corasa2157cf2016-08-16 21:09:14 +02002728 to_next_drop, n_left_to_next_drop);
Florin Corase127a7e2016-02-18 22:20:01 +01002729
2730 while (n_left_from > 0 && n_left_to_next_drop > 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02002731 {
2732 u32 pi0;
2733 vlib_buffer_t *b0;
2734 gid_address_t src, dst;
Florin Corase127a7e2016-02-18 22:20:01 +01002735
Florin Corasa2157cf2016-08-16 21:09:14 +02002736 pi0 = from[0];
2737 from += 1;
2738 n_left_from -= 1;
2739 to_next_drop[0] = pi0;
2740 to_next_drop += 1;
2741 n_left_to_next_drop -= 1;
Florin Corase127a7e2016-02-18 22:20:01 +01002742
Florin Corasa2157cf2016-08-16 21:09:14 +02002743 b0 = vlib_get_buffer (vm, pi0);
2744 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002745 vnet_buffer (b0)->lisp.overlay_afi = overlay;
Florin Corase127a7e2016-02-18 22:20:01 +01002746
Florin Corasa2157cf2016-08-16 21:09:14 +02002747 /* src/dst eid pair */
2748 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst);
Filip Tehlar324112f2016-06-02 16:07:38 +02002749
Florin Corasa2157cf2016-08-16 21:09:14 +02002750 /* if we have remote mapping for destination already in map-chache
2751 add forwarding tunnel directly. If not send a map-request */
Florin Corasdca88042016-09-14 16:01:38 +02002752 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
2753 &src);
Florin Corasa2157cf2016-08-16 21:09:14 +02002754 if (~0 != di)
2755 {
2756 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
2757 /* send a map-request also in case of negative mapping entry
2758 with corresponding action */
2759 if (m->action == LISP_SEND_MAP_REQUEST)
2760 {
2761 /* send map-request */
2762 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
2763 0 /* is_resend */ );
2764 pkts_mapped++;
2765 }
2766 else
2767 {
2768 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
2769 &src);
2770 if (~0 != si)
2771 {
Filip Tehlarce1aae42017-01-04 10:42:25 +01002772 dp_add_fwd_entry_from_mt (si, di);
Florin Corasa2157cf2016-08-16 21:09:14 +02002773 }
2774 }
2775 }
2776 else
2777 {
2778 /* send map-request */
2779 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
2780 0 /* is_resend */ );
2781 pkts_mapped++;
2782 }
Florin Corase127a7e2016-02-18 22:20:01 +01002783
Florin Corasa2157cf2016-08-16 21:09:14 +02002784 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
2785 {
2786 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
2787 sizeof (*tr));
Andrej Kozemcak94e34762016-05-25 12:43:21 +02002788
Florin Corasa2157cf2016-08-16 21:09:14 +02002789 memset (tr, 0, sizeof (*tr));
2790 gid_address_copy (&tr->dst_eid, &dst);
Florin Coras5a1c11b2016-09-06 16:29:34 +02002791 ip_address_copy (&tr->map_resolver_ip,
2792 &lcm->active_map_resolver);
Florin Corasa2157cf2016-08-16 21:09:14 +02002793 }
2794 gid_address_free (&dst);
2795 gid_address_free (&src);
2796 }
Florin Corase127a7e2016-02-18 22:20:01 +01002797
Florin Corasa2157cf2016-08-16 21:09:14 +02002798 vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
2799 n_left_to_next_drop);
Florin Corase127a7e2016-02-18 22:20:01 +01002800 }
2801 vlib_node_increment_counter (vm, node->node_index,
Florin Corasa2157cf2016-08-16 21:09:14 +02002802 LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
2803 pkts_mapped);
Florin Corase127a7e2016-02-18 22:20:01 +01002804 return from_frame->n_vectors;
2805}
2806
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002807static uword
2808lisp_cp_lookup_ip4 (vlib_main_t * vm,
2809 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2810{
2811 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
2812}
2813
2814static uword
2815lisp_cp_lookup_ip6 (vlib_main_t * vm,
2816 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2817{
2818 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
2819}
2820
Neale Ranns5e575b12016-10-03 09:40:25 +01002821static uword
2822lisp_cp_lookup_l2 (vlib_main_t * vm,
2823 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2824{
2825 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
2826}
2827
Florin Corasce1b4c72017-01-26 14:25:34 -08002828static uword
2829lisp_cp_lookup_nsh (vlib_main_t * vm,
2830 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2831{
2832 /* TODO decide if NSH should be propagated as LCAF or not */
2833 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_LCAF));
2834}
2835
Florin Corasa2157cf2016-08-16 21:09:14 +02002836/* *INDENT-OFF* */
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002837VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
2838 .function = lisp_cp_lookup_ip4,
2839 .name = "lisp-cp-lookup-ip4",
2840 .vector_size = sizeof (u32),
2841 .format_trace = format_lisp_cp_lookup_trace,
2842 .type = VLIB_NODE_TYPE_INTERNAL,
2843
2844 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2845 .error_strings = lisp_cp_lookup_error_strings,
2846
2847 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2848
2849 .next_nodes = {
2850 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002851 },
2852};
2853/* *INDENT-ON* */
2854
2855/* *INDENT-OFF* */
2856VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
2857 .function = lisp_cp_lookup_ip6,
2858 .name = "lisp-cp-lookup-ip6",
Florin Corase127a7e2016-02-18 22:20:01 +01002859 .vector_size = sizeof (u32),
2860 .format_trace = format_lisp_cp_lookup_trace,
2861 .type = VLIB_NODE_TYPE_INTERNAL,
2862
2863 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2864 .error_strings = lisp_cp_lookup_error_strings,
2865
2866 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2867
2868 .next_nodes = {
2869 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
Neale Ranns5e575b12016-10-03 09:40:25 +01002870 },
2871};
2872/* *INDENT-ON* */
2873
2874/* *INDENT-OFF* */
2875VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
2876 .function = lisp_cp_lookup_l2,
2877 .name = "lisp-cp-lookup-l2",
2878 .vector_size = sizeof (u32),
2879 .format_trace = format_lisp_cp_lookup_trace,
2880 .type = VLIB_NODE_TYPE_INTERNAL,
2881
2882 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2883 .error_strings = lisp_cp_lookup_error_strings,
2884
2885 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2886
2887 .next_nodes = {
2888 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
Florin Corase127a7e2016-02-18 22:20:01 +01002889 },
2890};
Florin Corasa2157cf2016-08-16 21:09:14 +02002891/* *INDENT-ON* */
Florin Corase127a7e2016-02-18 22:20:01 +01002892
Florin Corasce1b4c72017-01-26 14:25:34 -08002893/* *INDENT-OFF* */
2894VLIB_REGISTER_NODE (lisp_cp_lookup_nsh_node) = {
2895 .function = lisp_cp_lookup_nsh,
2896 .name = "lisp-cp-lookup-nsh",
2897 .vector_size = sizeof (u32),
2898 .format_trace = format_lisp_cp_lookup_trace,
2899 .type = VLIB_NODE_TYPE_INTERNAL,
2900
2901 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2902 .error_strings = lisp_cp_lookup_error_strings,
2903
2904 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2905
2906 .next_nodes = {
2907 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
2908 },
2909};
2910/* *INDENT-ON* */
2911
Florin Corase127a7e2016-02-18 22:20:01 +01002912/* lisp_cp_input statistics */
Filip Tehlarcda70662017-01-16 10:30:03 +01002913#define foreach_lisp_cp_input_error \
2914_(DROP, "drop") \
2915_(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
2916_(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
2917_(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
Florin Corase127a7e2016-02-18 22:20:01 +01002918_(MAP_REPLIES_RECEIVED, "map-replies received")
2919
Florin Corasa2157cf2016-08-16 21:09:14 +02002920static char *lisp_cp_input_error_strings[] = {
Florin Corase127a7e2016-02-18 22:20:01 +01002921#define _(sym,string) string,
2922 foreach_lisp_cp_input_error
2923#undef _
2924};
2925
2926typedef enum
2927{
2928#define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
Florin Corasa2157cf2016-08-16 21:09:14 +02002929 foreach_lisp_cp_input_error
Florin Corase127a7e2016-02-18 22:20:01 +01002930#undef _
2931 LISP_CP_INPUT_N_ERROR,
2932} lisp_cp_input_error_t;
2933
Florin Corase127a7e2016-02-18 22:20:01 +01002934typedef struct
2935{
2936 gid_address_t dst_eid;
2937 ip4_address_t map_resolver_ip;
2938} lisp_cp_input_trace_t;
2939
2940u8 *
2941format_lisp_cp_input_trace (u8 * s, va_list * args)
2942{
2943 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2944 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
Florin Corasa2157cf2016-08-16 21:09:14 +02002945 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
2946 va_arg (*args, lisp_cp_input_trace_t *);
Florin Corase127a7e2016-02-18 22:20:01 +01002947
2948 s = format (s, "LISP-CP-INPUT: TODO");
2949 return s;
2950}
2951
Filip Tehlar9677a942016-11-28 10:23:31 +01002952static void
2953remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
2954{
2955 mapping_t *m;
Florin Corasf3dc11a2017-01-24 03:13:43 -08002956 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
2957 memset (adj_args, 0, sizeof (adj_args[0]));
Filip Tehlar9677a942016-11-28 10:23:31 +01002958
2959 m = pool_elt_at_index (lcm->mapping_pool, mi);
Florin Corasf3dc11a2017-01-24 03:13:43 -08002960
2961 gid_address_copy (&adj_args->reid, &m->eid);
2962 adj_args->is_add = 0;
2963 if (vnet_lisp_add_del_adjacency (adj_args))
2964 clib_warning ("failed to del adjacency!");
2965
Filip Tehlar9677a942016-11-28 10:23:31 +01002966 vnet_lisp_add_del_mapping (&m->eid, 0, 0, 0, ~0, 0 /* is_add */ ,
2967 0 /* is_static */ , 0);
2968 mapping_delete_timer (lcm, mi);
2969}
2970
2971static void
2972mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
2973 f64 expiration_time)
2974{
2975 mapping_t *m;
2976 u64 now = clib_cpu_time_now ();
2977 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
2978 u64 exp_clock_time = now + expiration_time * cpu_cps;
2979
2980 m = pool_elt_at_index (lcm->mapping_pool, mi);
2981
2982 m->timer_set = 1;
2983 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
2984}
2985
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002986static void
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002987map_records_arg_free (map_records_arg_t * a)
Florin Corase127a7e2016-02-18 22:20:01 +01002988{
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002989 mapping_t *m;
2990 vec_foreach (m, a->mappings)
2991 {
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002992 vec_free (m->locators);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002993 gid_address_free (&m->eid);
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002994 }
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002995
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002996 clib_mem_free (a);
2997}
2998
2999void *
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003000process_map_reply (map_records_arg_t * a)
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003001{
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003002 mapping_t *m;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003003 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3004 u32 dst_map_index = 0;
3005 pending_map_request_t *pmr;
3006 u64 *noncep;
3007 uword *pmr_index;
3008
3009 if (a->is_rloc_probe)
3010 goto done;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003011
Florin Corase127a7e2016-02-18 22:20:01 +01003012 /* Check pending requests table and nonce */
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003013 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
Florin Corase127a7e2016-02-18 22:20:01 +01003014 if (!pmr_index)
3015 {
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003016 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003017 goto done;
Florin Corase127a7e2016-02-18 22:20:01 +01003018 }
Florin Corasa2157cf2016-08-16 21:09:14 +02003019 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
Florin Corase127a7e2016-02-18 22:20:01 +01003020
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003021 vec_foreach (m, a->mappings)
3022 {
3023 /* insert/update mappings cache */
3024 vnet_lisp_add_del_mapping (&m->eid, m->locators, m->action,
3025 m->authoritative, m->ttl,
3026 1, 0 /* is_static */ , &dst_map_index);
Florin Corase127a7e2016-02-18 22:20:01 +01003027
Florin Corasba888e42017-01-24 11:38:18 -08003028 if (dst_map_index == (u32) ~ 0)
3029 continue;
3030
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003031 /* try to program forwarding only if mapping saved or updated */
Florin Corasba888e42017-01-24 11:38:18 -08003032 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
3033 memset (adj_args, 0, sizeof (adj_args[0]));
Florin Corasf3dc11a2017-01-24 03:13:43 -08003034
Florin Corasba888e42017-01-24 11:38:18 -08003035 gid_address_copy (&adj_args->leid, &pmr->src);
3036 gid_address_copy (&adj_args->reid, &m->eid);
3037 adj_args->is_add = 1;
3038 if (vnet_lisp_add_del_adjacency (adj_args))
3039 clib_warning ("failed to add adjacency!");
Florin Corasf3dc11a2017-01-24 03:13:43 -08003040
Florin Corasba888e42017-01-24 11:38:18 -08003041 if ((u32) ~ 0 != m->ttl)
3042 mapping_start_expiration_timer (lcm, dst_map_index, m->ttl * 60);
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003043 }
Florin Corase127a7e2016-02-18 22:20:01 +01003044
3045 /* remove pending map request entry */
Florin Corasa2157cf2016-08-16 21:09:14 +02003046
3047 /* *INDENT-OFF* */
Florin Corasf4691cd2016-08-15 19:16:32 +02003048 clib_fifo_foreach (noncep, pmr->nonces, ({
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003049 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
Florin Corasf4691cd2016-08-15 19:16:32 +02003050 }));
Florin Corasa2157cf2016-08-16 21:09:14 +02003051 /* *INDENT-ON* */
3052
3053 clib_fifo_free (pmr->nonces);
3054 pool_put (lcm->pending_map_requests_pool, pmr);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003055
3056done:
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003057 map_records_arg_free (a);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003058 return 0;
Florin Corase127a7e2016-02-18 22:20:01 +01003059}
3060
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003061static int
3062is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3063 lisp_key_type_t key_id, u8 * key)
3064{
3065 u8 *auth_data = 0;
3066 u16 auth_data_len;
3067 int result;
3068
3069 auth_data_len = auth_data_len_by_key_id (key_id);
3070 if ((u16) ~ 0 == auth_data_len)
3071 {
3072 clib_warning ("invalid length for key_id %d!", key_id);
3073 return 0;
3074 }
3075
3076 /* save auth data */
3077 vec_validate (auth_data, auth_data_len - 1);
3078 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3079
3080 /* clear auth data */
3081 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3082
3083 /* get hash of the message */
3084 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3085 (unsigned char *) h, msg_len, NULL, NULL);
3086
3087 result = memcmp (code, auth_data, auth_data_len);
3088
3089 vec_free (auth_data);
3090
3091 return !result;
3092}
3093
3094static void
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003095process_map_notify (map_records_arg_t * a)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003096{
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003097 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003098 uword *pmr_index;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003099
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003100 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003101 if (!pmr_index)
3102 {
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003103 clib_warning ("No pending map-register entry with nonce %lu!",
3104 a->nonce);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003105 return;
3106 }
3107
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003108 map_records_arg_free (a);
3109 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3110}
3111
3112static mapping_t *
3113get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3114{
3115 u32 mi;
3116
3117 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3118 if (~0 == mi)
3119 {
3120 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3121 e);
3122 return 0;
3123 }
3124 return pool_elt_at_index (lcm->mapping_pool, mi);
3125}
3126
3127/**
3128 * When map-notify is received it is necessary that all EIDs in the record
3129 * list share common key. The key is then used to verify authentication
3130 * data in map-notify message.
3131 */
3132static int
3133map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3134 u32 key_id, u8 ** key_out)
3135{
3136 u32 i, len = vec_len (maps);
3137 mapping_t *m;
3138
3139 /* get key of the first mapping */
3140 m = get_mapping (lcm, &maps[0].eid);
3141 if (!m || !m->key)
3142 return -1;
3143
3144 key_out[0] = m->key;
3145
3146 for (i = 1; i < len; i++)
3147 {
3148 m = get_mapping (lcm, &maps[i].eid);
3149 if (!m || !m->key)
3150 return -1;
3151
3152 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
3153 {
3154 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
3155 return -1;
3156 }
3157 }
3158 return 0;
3159}
3160
3161static int
3162parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
3163{
3164 locator_t *locators = 0;
3165 u32 i, len;
3166 gid_address_t deid;
3167 mapping_t m;
3168 locator_t *loc;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003169
3170 /* parse record eid */
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003171 for (i = 0; i < count; i++)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003172 {
3173 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
3174 if (len == ~0)
3175 {
3176 clib_warning ("Failed to parse mapping record!");
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003177 vec_foreach (loc, locators) locator_free (loc);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003178 vec_free (locators);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003179 return -1;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003180 }
3181
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003182 m.locators = locators;
3183 gid_address_copy (&m.eid, &deid);
3184 vec_add1 (a->mappings, m);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003185 }
3186
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003187 return 0;
3188}
3189
3190static map_records_arg_t *
3191parse_map_notify (vlib_buffer_t * b)
3192{
3193 int rc = 0;
3194 map_notify_hdr_t *mnotif_hdr;
3195 lisp_key_type_t key_id;
3196 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3197 u8 *key = 0;
3198 gid_address_t deid;
3199 u16 auth_data_len = 0;
3200 u8 record_count;
3201 map_records_arg_t *a = clib_mem_alloc (sizeof (*a));
3202
3203 memset (a, 0, sizeof (*a));
3204 mnotif_hdr = vlib_buffer_get_current (b);
3205 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
3206 memset (&deid, 0, sizeof (deid));
3207
3208 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
3209 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
3210 auth_data_len = auth_data_len_by_key_id (key_id);
3211
3212 /* advance buffer by authentication data */
3213 vlib_buffer_pull (b, auth_data_len);
3214
3215 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
3216 rc = parse_map_records (b, a, record_count);
3217 if (rc != 0)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003218 {
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003219 map_records_arg_free (a);
3220 return 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003221 }
3222
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003223 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
3224 if (rc != 0)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003225 {
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003226 map_records_arg_free (a);
3227 return 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003228 }
3229
3230 /* verify authentication data */
3231 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003232 - (u8 *) mnotif_hdr, key_id, key))
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003233 {
3234 clib_warning ("Map-notify auth data verification failed for nonce %lu!",
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003235 a->nonce);
3236 map_records_arg_free (a);
3237 return 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003238 }
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003239 return a;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003240}
3241
3242static vlib_buffer_t *
3243build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
3244 ip_address_t * dst, u64 nonce, u8 probe_bit,
3245 mapping_t * records, u16 dst_port, u32 * bi_res)
3246{
3247 vlib_buffer_t *b;
3248 u32 bi;
3249 vlib_main_t *vm = lcm->vlib_main;
3250
3251 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
3252 {
3253 clib_warning ("Can't allocate buffer for Map-Register!");
3254 return 0;
3255 }
3256
3257 b = vlib_get_buffer (vm, bi);
3258
3259 /* leave some space for the encap headers */
3260 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
3261
3262 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
3263
3264 /* push outer ip header */
3265 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst);
3266
3267 bi_res[0] = bi;
3268 return b;
3269}
3270
3271static int
3272send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
3273 u8 probe_bit, u64 nonce, u16 dst_port,
3274 ip_address_t * probed_loc)
3275{
3276 ip_address_t src;
3277 u32 bi;
3278 vlib_buffer_t *b;
3279 vlib_frame_t *f;
3280 u32 next_index, *to_next;
3281 mapping_t *records = 0, *m;
3282
3283 m = pool_elt_at_index (lcm->mapping_pool, mi);
3284 if (!m)
3285 return -1;
3286
3287 vec_add1 (records, m[0]);
3288 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
3289 memset (&src, 0, sizeof (src));
3290
3291 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
3292 {
3293 clib_warning ("can't find inteface address for %U", format_ip_address,
3294 dst);
3295 return -1;
3296 }
3297
3298 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
3299 &bi);
3300 if (!b)
3301 return -1;
3302 free_map_register_records (records);
3303
3304 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3305 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3306 ip4_lookup_node.index : ip6_lookup_node.index;
3307
3308 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3309
3310 /* Enqueue the packet */
3311 to_next = vlib_frame_vector_args (f);
3312 to_next[0] = bi;
3313 f->n_vectors = 1;
3314 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3315 return 0;
3316}
3317
Filip Tehlarb601f222017-01-02 10:22:56 +01003318static void
3319find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
3320{
3321 const i32 start = vnet_buffer (b)->ip.start_of_ip_header;
3322 if (start < 0 && start < -sizeof (b->pre_data))
3323 {
3324 *ip_hdr = 0;
3325 return;
3326 }
3327
3328 *ip_hdr = b->data + start;
3329 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
3330 *ip_hdr = 0;
3331}
3332
Florin Corase127a7e2016-02-18 22:20:01 +01003333void
Filip Tehlarcda70662017-01-16 10:30:03 +01003334process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
3335 lisp_cp_main_t * lcm, vlib_buffer_t * b)
Florin Corase127a7e2016-02-18 22:20:01 +01003336{
Filip Tehlarb601f222017-01-02 10:22:56 +01003337 u8 *ip_hdr = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003338 ip_address_t *dst_loc = 0, probed_loc, src_loc;
3339 mapping_t m;
Florin Corasa2157cf2016-08-16 21:09:14 +02003340 map_request_hdr_t *mreq_hdr;
Florin Corase127a7e2016-02-18 22:20:01 +01003341 gid_address_t src, dst;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003342 u64 nonce;
Filip Tehlarcda70662017-01-16 10:30:03 +01003343 u32 i, len = 0, rloc_probe_recv = 0;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003344 gid_address_t *itr_rlocs = 0;
Florin Corase127a7e2016-02-18 22:20:01 +01003345
3346 mreq_hdr = vlib_buffer_get_current (b);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003347 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
Florin Corasa2157cf2016-08-16 21:09:14 +02003348 {
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003349 clib_warning
3350 ("Only SMR Map-Requests and RLOC probe supported for now!");
Florin Corase127a7e2016-02-18 22:20:01 +01003351 return;
Florin Corasa2157cf2016-08-16 21:09:14 +02003352 }
Florin Corase127a7e2016-02-18 22:20:01 +01003353
Filip Tehlarb601f222017-01-02 10:22:56 +01003354 vlib_buffer_pull (b, sizeof (*mreq_hdr));
3355 nonce = MREQ_NONCE (mreq_hdr);
3356
Florin Corase127a7e2016-02-18 22:20:01 +01003357 /* parse src eid */
3358 len = lisp_msg_parse_addr (b, &src);
3359 if (len == ~0)
3360 return;
3361
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003362 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
3363 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
Florin Corase127a7e2016-02-18 22:20:01 +01003364 if (len == ~0)
Filip Tehlarcda70662017-01-16 10:30:03 +01003365 goto done;
Florin Corase127a7e2016-02-18 22:20:01 +01003366
3367 /* parse eid records and send SMR-invoked map-requests */
Florin Corasa2157cf2016-08-16 21:09:14 +02003368 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
Florin Corase127a7e2016-02-18 22:20:01 +01003369 {
Florin Corasa2157cf2016-08-16 21:09:14 +02003370 memset (&dst, 0, sizeof (dst));
Florin Corase127a7e2016-02-18 22:20:01 +01003371 len = lisp_msg_parse_eid_rec (b, &dst);
3372 if (len == ~0)
Florin Corasa2157cf2016-08-16 21:09:14 +02003373 {
3374 clib_warning ("Can't parse map-request EID-record");
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003375 goto done;
Florin Corasa2157cf2016-08-16 21:09:14 +02003376 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003377
3378 if (MREQ_SMR (mreq_hdr))
3379 {
3380 /* send SMR-invoked map-requests */
3381 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
3382 }
3383 else if (MREQ_RLOC_PROBE (mreq_hdr))
3384 {
Filip Tehlarb601f222017-01-02 10:22:56 +01003385 find_ip_header (b, &ip_hdr);
3386 if (!ip_hdr)
3387 {
3388 clib_warning ("Cannot find the IP header!");
Filip Tehlarcda70662017-01-16 10:30:03 +01003389 goto done;
Filip Tehlarb601f222017-01-02 10:22:56 +01003390 }
Filip Tehlarcda70662017-01-16 10:30:03 +01003391 rloc_probe_recv++;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003392 memset (&m, 0, sizeof (m));
3393 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3394
3395 // TODO: select best locator; for now use the first one
3396 dst_loc = &gid_address_ip (&itr_rlocs[0]);
3397
3398 /* get src/dst IP addresses */
3399 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
3400
3401 // TODO get source port from buffer
3402 u16 src_port = LISP_CONTROL_PORT;
3403
3404 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
3405 src_port, &probed_loc);
3406 }
Florin Corase127a7e2016-02-18 22:20:01 +01003407 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003408
3409done:
Filip Tehlarcda70662017-01-16 10:30:03 +01003410 vlib_node_increment_counter (vm, node->node_index,
3411 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
3412 rloc_probe_recv);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003413 vec_free (itr_rlocs);
Florin Corase127a7e2016-02-18 22:20:01 +01003414}
3415
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003416static map_records_arg_t *
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003417parse_map_reply (vlib_buffer_t * b)
3418{
3419 locator_t probed;
3420 gid_address_t deid;
3421 void *h;
3422 u32 i, len = 0;
3423 mapping_t m;
3424 map_reply_hdr_t *mrep_hdr;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003425 map_records_arg_t *a = clib_mem_alloc (sizeof (*a));
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003426 memset (a, 0, sizeof (*a));
3427 locator_t *locators;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003428
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003429 mrep_hdr = vlib_buffer_get_current (b);
3430 a->nonce = MREP_NONCE (mrep_hdr);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003431 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003432 vlib_buffer_pull (b, sizeof (*mrep_hdr));
3433
3434 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
3435 {
3436 memset (&m, 0, sizeof (m));
3437 locators = 0;
3438 h = vlib_buffer_get_current (b);
3439
3440 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
3441 m.action = MAP_REC_ACTION (h);
3442 m.authoritative = MAP_REC_AUTH (h);
3443
3444 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
3445 if (len == ~0)
3446 {
3447 clib_warning ("Failed to parse mapping record!");
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003448 map_records_arg_free (a);
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003449 return 0;
3450 }
3451
3452 m.locators = locators;
3453 gid_address_copy (&m.eid, &deid);
3454 vec_add1 (a->mappings, m);
3455 }
3456 return a;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003457}
3458
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003459static void
3460queue_map_reply_for_processing (map_records_arg_t * a)
3461{
Florin Coras655fcc42017-01-10 08:57:54 -08003462 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003463}
3464
3465static void
3466queue_map_notify_for_processing (map_records_arg_t * a)
3467{
3468 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
3469}
3470
Florin Corase127a7e2016-02-18 22:20:01 +01003471static uword
3472lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
Florin Corasa2157cf2016-08-16 21:09:14 +02003473 vlib_frame_t * from_frame)
Florin Corase127a7e2016-02-18 22:20:01 +01003474{
Filip Tehlarcda70662017-01-16 10:30:03 +01003475 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
3476 map_notifies_recv = 0;
Florin Corase127a7e2016-02-18 22:20:01 +01003477 lisp_msg_type_e type;
Florin Corasa2157cf2016-08-16 21:09:14 +02003478 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003479 map_records_arg_t *a;
Florin Corase127a7e2016-02-18 22:20:01 +01003480
3481 from = vlib_frame_vector_args (from_frame);
3482 n_left_from = from_frame->n_vectors;
3483
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003484
Florin Corase127a7e2016-02-18 22:20:01 +01003485 while (n_left_from > 0)
3486 {
3487 u32 n_left_to_next_drop;
3488
3489 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
Florin Corasa2157cf2016-08-16 21:09:14 +02003490 to_next_drop, n_left_to_next_drop);
Florin Corase127a7e2016-02-18 22:20:01 +01003491 while (n_left_from > 0 && n_left_to_next_drop > 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02003492 {
3493 u32 bi0;
3494 vlib_buffer_t *b0;
Florin Corase127a7e2016-02-18 22:20:01 +01003495
Florin Corasa2157cf2016-08-16 21:09:14 +02003496 bi0 = from[0];
3497 from += 1;
3498 n_left_from -= 1;
3499 to_next_drop[0] = bi0;
3500 to_next_drop += 1;
3501 n_left_to_next_drop -= 1;
Florin Corase127a7e2016-02-18 22:20:01 +01003502
Florin Corasa2157cf2016-08-16 21:09:14 +02003503 b0 = vlib_get_buffer (vm, bi0);
Florin Corase127a7e2016-02-18 22:20:01 +01003504
Florin Corasa2157cf2016-08-16 21:09:14 +02003505 type = lisp_msg_type (vlib_buffer_get_current (b0));
3506 switch (type)
3507 {
3508 case LISP_MAP_REPLY:
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003509 a = parse_map_reply (b0);
3510 if (a)
Filip Tehlarcda70662017-01-16 10:30:03 +01003511 {
3512 if (a->is_rloc_probe)
3513 rloc_probe_rep_recv++;
3514 queue_map_reply_for_processing (a);
3515 }
Florin Corasa2157cf2016-08-16 21:09:14 +02003516 break;
3517 case LISP_MAP_REQUEST:
Filip Tehlarcda70662017-01-16 10:30:03 +01003518 process_map_request (vm, node, lcm, b0);
Florin Corasa2157cf2016-08-16 21:09:14 +02003519 break;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003520 case LISP_MAP_NOTIFY:
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003521 a = parse_map_notify (b0);
3522 if (a)
Filip Tehlarcda70662017-01-16 10:30:03 +01003523 {
3524 map_notifies_recv++;
3525 queue_map_notify_for_processing (a);
3526 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003527 break;
Florin Corasa2157cf2016-08-16 21:09:14 +02003528 default:
3529 clib_warning ("Unsupported LISP message type %d", type);
3530 break;
3531 }
Florin Corase127a7e2016-02-18 22:20:01 +01003532
Florin Corasa2157cf2016-08-16 21:09:14 +02003533 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
Florin Corase127a7e2016-02-18 22:20:01 +01003534
Florin Corasa2157cf2016-08-16 21:09:14 +02003535 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3536 {
Florin Corase127a7e2016-02-18 22:20:01 +01003537
Florin Corasa2157cf2016-08-16 21:09:14 +02003538 }
3539 }
Florin Corase127a7e2016-02-18 22:20:01 +01003540
Florin Corasa2157cf2016-08-16 21:09:14 +02003541 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
3542 n_left_to_next_drop);
Florin Corase127a7e2016-02-18 22:20:01 +01003543 }
Filip Tehlarcda70662017-01-16 10:30:03 +01003544 vlib_node_increment_counter (vm, node->node_index,
3545 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
3546 rloc_probe_rep_recv);
3547 vlib_node_increment_counter (vm, node->node_index,
3548 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
3549 map_notifies_recv);
Florin Corase127a7e2016-02-18 22:20:01 +01003550 return from_frame->n_vectors;
3551}
3552
Florin Corasa2157cf2016-08-16 21:09:14 +02003553/* *INDENT-OFF* */
Florin Corase127a7e2016-02-18 22:20:01 +01003554VLIB_REGISTER_NODE (lisp_cp_input_node) = {
3555 .function = lisp_cp_input,
3556 .name = "lisp-cp-input",
3557 .vector_size = sizeof (u32),
3558 .format_trace = format_lisp_cp_input_trace,
3559 .type = VLIB_NODE_TYPE_INTERNAL,
3560
3561 .n_errors = LISP_CP_INPUT_N_ERROR,
3562 .error_strings = lisp_cp_input_error_strings,
3563
3564 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
3565
3566 .next_nodes = {
3567 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
3568 },
3569};
Florin Corasa2157cf2016-08-16 21:09:14 +02003570/* *INDENT-ON* */
Florin Corase127a7e2016-02-18 22:20:01 +01003571
3572clib_error_t *
Florin Corasa2157cf2016-08-16 21:09:14 +02003573lisp_cp_init (vlib_main_t * vm)
Florin Corase127a7e2016-02-18 22:20:01 +01003574{
Florin Corasa2157cf2016-08-16 21:09:14 +02003575 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3576 clib_error_t *error = 0;
Florin Corase127a7e2016-02-18 22:20:01 +01003577
3578 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
3579 return error;
3580
3581 lcm->im4 = &ip4_main;
3582 lcm->im6 = &ip6_main;
3583 lcm->vlib_main = vm;
Florin Corasa2157cf2016-08-16 21:09:14 +02003584 lcm->vnet_main = vnet_get_main ();
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02003585 lcm->mreq_itr_rlocs = ~0;
Florin Corasf727db92016-06-23 15:01:58 +02003586 lcm->lisp_pitr = 0;
Florin Corasba888e42017-01-24 11:38:18 -08003587 lcm->flags = 0;
Florin Coras5a1c11b2016-09-06 16:29:34 +02003588 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
Florin Corase127a7e2016-02-18 22:20:01 +01003589
3590 gid_dictionary_init (&lcm->mapping_index_by_gid);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003591 lcm->do_map_resolver_election = 1;
Florin Corasdca88042016-09-14 16:01:38 +02003592 lcm->map_request_mode = MR_MODE_DST_ONLY;
Florin Corase127a7e2016-02-18 22:20:01 +01003593
Florin Coras577c3552016-04-21 00:45:40 +02003594 /* default vrf mapped to vni 0 */
Florin Corasa2157cf2016-08-16 21:09:14 +02003595 hash_set (lcm->table_id_by_vni, 0, 0);
3596 hash_set (lcm->vni_by_table_id, 0, 0);
Florin Coras577c3552016-04-21 00:45:40 +02003597
Florin Corase127a7e2016-02-18 22:20:01 +01003598 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
Florin Corasa2157cf2016-08-16 21:09:14 +02003599 lisp_cp_input_node.index, 1 /* is_ip4 */ );
Florin Corase127a7e2016-02-18 22:20:01 +01003600 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
Florin Corasa2157cf2016-08-16 21:09:14 +02003601 lisp_cp_input_node.index, 0 /* is_ip4 */ );
Florin Corase127a7e2016-02-18 22:20:01 +01003602
Filip Tehlar9677a942016-11-28 10:23:31 +01003603 u64 now = clib_cpu_time_now ();
3604 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
Florin Corase127a7e2016-02-18 22:20:01 +01003605 return 0;
3606}
3607
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003608static void *
Florin Corasa2157cf2016-08-16 21:09:14 +02003609send_map_request_thread_fn (void *arg)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003610{
Florin Corasa2157cf2016-08-16 21:09:14 +02003611 map_request_args_t *a = arg;
3612 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003613
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003614 if (a->is_resend)
3615 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
3616 else
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003617 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003618
3619 return 0;
3620}
3621
3622static int
3623queue_map_request (gid_address_t * seid, gid_address_t * deid,
Florin Corasa2157cf2016-08-16 21:09:14 +02003624 u8 smr_invoked, u8 is_resend)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003625{
3626 map_request_args_t a;
3627
3628 a.is_resend = is_resend;
3629 gid_address_copy (&a.seid, seid);
3630 gid_address_copy (&a.deid, deid);
3631 a.smr_invoked = smr_invoked;
3632
3633 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
Florin Corasa2157cf2016-08-16 21:09:14 +02003634 (u8 *) & a, sizeof (a));
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003635 return 0;
3636}
3637
3638/**
3639 * Take an action with a pending map request depending on expiration time
3640 * and re-try counters.
3641 */
3642static void
3643update_pending_request (pending_map_request_t * r, f64 dt)
3644{
Florin Corasa2157cf2016-08-16 21:09:14 +02003645 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003646 lisp_msmr_t *mr;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003647
3648 if (r->time_to_expire - dt < 0)
3649 /* it's time to decide what to do with this pending request */
3650 {
3651 if (r->retries_num >= NUMBER_OF_RETRIES)
Florin Corasa2157cf2016-08-16 21:09:14 +02003652 /* too many retries -> assume current map resolver is not available */
3653 {
3654 mr = get_map_resolver (&lcm->active_map_resolver);
3655 if (!mr)
3656 {
3657 clib_warning ("Map resolver %U not found - probably deleted "
3658 "by the user recently.", format_ip_address,
3659 &lcm->active_map_resolver);
3660 }
3661 else
3662 {
3663 clib_warning ("map resolver %U is unreachable, ignoring",
3664 format_ip_address, &lcm->active_map_resolver);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003665
Florin Corasa2157cf2016-08-16 21:09:14 +02003666 /* mark current map resolver unavailable so it won't be
3667 * selected next time */
3668 mr->is_down = 1;
3669 mr->last_update = vlib_time_now (lcm->vlib_main);
3670 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003671
Florin Corasa2157cf2016-08-16 21:09:14 +02003672 reset_pending_mr_counters (r);
3673 elect_map_resolver (lcm);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003674
Florin Corasa2157cf2016-08-16 21:09:14 +02003675 /* try to find a next eligible map resolver and re-send */
3676 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
3677 1 /* resend */ );
3678 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003679 else
Florin Corasa2157cf2016-08-16 21:09:14 +02003680 {
3681 /* try again */
3682 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
3683 1 /* resend */ );
3684 r->retries_num++;
3685 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
3686 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003687 }
3688 else
3689 r->time_to_expire -= dt;
3690}
3691
3692static void
3693remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
3694{
Florin Corasa2157cf2016-08-16 21:09:14 +02003695 u64 *nonce;
3696 pending_map_request_t *pmr;
3697 u32 *to_be_removed = 0, *pmr_index;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003698
Florin Corasa2157cf2016-08-16 21:09:14 +02003699 /* *INDENT-OFF* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003700 pool_foreach (pmr, lcm->pending_map_requests_pool,
Florin Corasa2157cf2016-08-16 21:09:14 +02003701 ({
3702 if (pmr->to_be_removed)
3703 {
3704 clib_fifo_foreach (nonce, pmr->nonces, ({
3705 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
3706 }));
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003707
Florin Corasa2157cf2016-08-16 21:09:14 +02003708 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
3709 }
3710 }));
3711 /* *INDENT-ON* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003712
3713 vec_foreach (pmr_index, to_be_removed)
3714 pool_put_index (lcm->pending_map_requests_by_nonce, pmr_index[0]);
3715
3716 vec_free (to_be_removed);
3717}
3718
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003719static void
3720update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
3721{
3722 static f64 time_left = RLOC_PROBING_INTERVAL;
3723
3724 if (!lcm->is_enabled || !lcm->rloc_probing)
3725 return;
3726
3727 time_left -= dt;
3728 if (time_left <= 0)
3729 {
3730 time_left = RLOC_PROBING_INTERVAL;
3731 send_rloc_probes (lcm);
3732 }
3733}
3734
3735static void
3736update_map_register (lisp_cp_main_t * lcm, f64 dt)
3737{
3738 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
3739 static u64 mreg_sent_counter = 0;
3740
3741 if (!lcm->is_enabled || !lcm->map_registering)
3742 return;
3743
3744 time_left -= dt;
3745 if (time_left <= 0)
3746 {
3747 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
3748 time_left = MAP_REGISTER_INTERVAL;
3749 else
3750 {
3751 mreg_sent_counter++;
3752 time_left = QUICK_MAP_REGISTER_INTERVAL;
3753 }
3754 send_map_register (lcm, 1 /* want map notify */ );
3755 }
3756}
3757
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003758static uword
3759send_map_resolver_service (vlib_main_t * vm,
Florin Corasa2157cf2016-08-16 21:09:14 +02003760 vlib_node_runtime_t * rt, vlib_frame_t * f)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003761{
Filip Tehlar9677a942016-11-28 10:23:31 +01003762 u32 *expired = 0;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003763 f64 period = 2.0;
Florin Corasa2157cf2016-08-16 21:09:14 +02003764 pending_map_request_t *pmr;
3765 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003766
3767 while (1)
3768 {
3769 vlib_process_wait_for_event_or_clock (vm, period);
3770
3771 /* currently no signals are expected - just wait for clock */
3772 (void) vlib_process_get_events (vm, 0);
3773
Florin Corasa2157cf2016-08-16 21:09:14 +02003774 /* *INDENT-OFF* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003775 pool_foreach (pmr, lcm->pending_map_requests_pool,
Florin Corasa2157cf2016-08-16 21:09:14 +02003776 ({
3777 if (!pmr->to_be_removed)
3778 update_pending_request (pmr, period);
3779 }));
3780 /* *INDENT-ON* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003781
3782 remove_dead_pending_map_requests (lcm);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003783
3784 update_map_register (lcm, period);
3785 update_rloc_probing (lcm, period);
Filip Tehlar9677a942016-11-28 10:23:31 +01003786
3787 u64 now = clib_cpu_time_now ();
3788
3789 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
3790 if (vec_len (expired) > 0)
3791 {
3792 u32 *mi = 0;
3793 vec_foreach (mi, expired)
3794 {
3795 remove_expired_mapping (lcm, mi[0]);
3796 }
3797 _vec_len (expired) = 0;
3798 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003799 }
3800
3801 /* unreachable */
3802 return 0;
3803}
3804
Filip Tehlar7eaf0e52017-03-08 08:46:51 +01003805vnet_api_error_t
3806vnet_lisp_stats_enable_disable (u8 enable)
3807{
3808 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3809
3810 if (vnet_lisp_enable_disable_status () == 0)
3811 return VNET_API_ERROR_LISP_DISABLED;
3812
3813 lcm->stats_enabled = enable;
3814 return 0;
3815}
3816
3817u8
3818vnet_lisp_stats_enable_disable_state (void)
3819{
3820 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3821
3822 if (vnet_lisp_enable_disable_status () == 0)
3823 return VNET_API_ERROR_LISP_DISABLED;
3824
3825 return lcm->stats_enabled;
3826}
3827
Florin Corasa2157cf2016-08-16 21:09:14 +02003828/* *INDENT-OFF* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003829VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
3830 .function = send_map_resolver_service,
3831 .type = VLIB_NODE_TYPE_PROCESS,
3832 .name = "lisp-retry-service",
3833 .process_log2_n_stack_bytes = 16,
3834};
Florin Corasa2157cf2016-08-16 21:09:14 +02003835/* *INDENT-ON* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003836
Florin Corasa2157cf2016-08-16 21:09:14 +02003837VLIB_INIT_FUNCTION (lisp_cp_init);
3838
3839/*
3840 * fd.io coding-style-patch-verification: ON
3841 *
3842 * Local Variables:
3843 * eval: (c-set-style "gnu")
3844 * End:
3845 */