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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 Tehlar195bcee2016-05-13 17:37:35 +0200996/**
Florin Corasf727db92016-06-23 15:01:58 +0200997 * Adds/removes/updates mapping. Does not program forwarding.
Filip Tehlar195bcee2016-05-13 17:37:35 +0200998 *
Florin Coras71893ac2016-07-10 20:09:32 +0200999 * @param eid end-host identifier
Filip Tehlar195bcee2016-05-13 17:37:35 +02001000 * @param rlocs vector of remote locators
1001 * @param action action for negative map-reply
1002 * @param is_add add mapping if non-zero, delete otherwise
Florin Coras71893ac2016-07-10 20:09:32 +02001003 * @param res_map_index the map-index that was created/updated/removed. It is
1004 * set to ~0 if no action is taken.
Filip Tehlar3cd9e732016-08-23 10:52:44 +02001005 * @param is_static used for distinguishing between statically learned
1006 remote mappings and mappings obtained from MR
Filip Tehlar195bcee2016-05-13 17:37:35 +02001007 * @return return code
1008 */
1009int
Florin Coras71893ac2016-07-10 20:09:32 +02001010vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action,
Filip Tehlar3cd9e732016-08-23 10:52:44 +02001011 u8 authoritative, u32 ttl, u8 is_add, u8 is_static,
Florin Corasa2157cf2016-08-16 21:09:14 +02001012 u32 * res_map_index)
Filip Tehlar195bcee2016-05-13 17:37:35 +02001013{
Florin Corasa2157cf2016-08-16 21:09:14 +02001014 vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
1015 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1016 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Florin Corasf727db92016-06-23 15:01:58 +02001017 u32 mi, ls_index = 0, dst_map_index;
Florin Corasa2157cf2016-08-16 21:09:14 +02001018 mapping_t *old_map;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001019
Florin Corasa2157cf2016-08-16 21:09:14 +02001020 if (vnet_lisp_enable_disable_status () == 0)
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001021 {
1022 clib_warning ("LISP is disabled!");
1023 return VNET_API_ERROR_LISP_DISABLED;
1024 }
1025
Florin Corasf727db92016-06-23 15:01:58 +02001026 if (res_map_index)
1027 res_map_index[0] = ~0;
Filip Tehlar58f886a2016-05-30 15:57:40 +02001028
Florin Corasf727db92016-06-23 15:01:58 +02001029 memset (m_args, 0, sizeof (m_args[0]));
1030 memset (ls_args, 0, sizeof (ls_args[0]));
Filip Tehlar195bcee2016-05-13 17:37:35 +02001031
Florin Corasf727db92016-06-23 15:01:58 +02001032 ls_args->locators = rlocs;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001033
Florin Coras71893ac2016-07-10 20:09:32 +02001034 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
Florin Corasa2157cf2016-08-16 21:09:14 +02001035 old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
Florin Corasf727db92016-06-23 15:01:58 +02001036
1037 if (is_add)
Filip Tehlar195bcee2016-05-13 17:37:35 +02001038 {
Florin Corasf727db92016-06-23 15:01:58 +02001039 /* overwrite: if mapping already exists, decide if locators should be
1040 * updated and be done */
Florin Coras71893ac2016-07-10 20:09:32 +02001041 if (old_map && gid_address_cmp (&old_map->eid, eid) == 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02001042 {
Filip Tehlar3cd9e732016-08-23 10:52:44 +02001043 if (!is_static && (old_map->is_static || old_map->local))
1044 {
1045 /* do not overwrite local or static remote mappings */
1046 clib_warning ("mapping %U rejected due to collision with local "
1047 "or static remote mapping!", format_gid_address,
Filip Tehlard5fcc462016-10-17 16:20:18 +02001048 eid);
Filip Tehlar3cd9e732016-08-23 10:52:44 +02001049 return 0;
1050 }
1051
Florin Corasa2157cf2016-08-16 21:09:14 +02001052 locator_set_t *old_ls;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001053
Florin Corasa2157cf2016-08-16 21:09:14 +02001054 /* update mapping attributes */
1055 old_map->action = action;
1056 old_map->authoritative = authoritative;
1057 old_map->ttl = ttl;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001058
Florin Corasa2157cf2016-08-16 21:09:14 +02001059 old_ls = pool_elt_at_index (lcm->locator_set_pool,
1060 old_map->locator_set_index);
1061 if (compare_locators (lcm, old_ls->locator_indices,
1062 ls_args->locators))
1063 {
1064 /* set locator-set index to overwrite */
1065 ls_args->is_add = 1;
1066 ls_args->index = old_map->locator_set_index;
1067 vnet_lisp_add_del_locator_set (ls_args, 0);
1068 if (res_map_index)
1069 res_map_index[0] = mi;
1070 }
1071 }
Florin Corasf727db92016-06-23 15:01:58 +02001072 /* new mapping */
1073 else
Florin Corasa2157cf2016-08-16 21:09:14 +02001074 {
Filip Tehlard5fcc462016-10-17 16:20:18 +02001075 remove_overlapping_sub_prefixes (lcm, eid, 0 == ls_args->locators);
1076
Florin Corasa2157cf2016-08-16 21:09:14 +02001077 ls_args->is_add = 1;
1078 ls_args->index = ~0;
Florin Corasf727db92016-06-23 15:01:58 +02001079
Florin Corasa2157cf2016-08-16 21:09:14 +02001080 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
Florin Corasf727db92016-06-23 15:01:58 +02001081
Florin Corasa2157cf2016-08-16 21:09:14 +02001082 /* add mapping */
1083 gid_address_copy (&m_args->eid, eid);
1084 m_args->is_add = 1;
1085 m_args->action = action;
1086 m_args->locator_set_index = ls_index;
Filip Tehlar3cd9e732016-08-23 10:52:44 +02001087 m_args->is_static = is_static;
Filip Tehlar9677a942016-11-28 10:23:31 +01001088 m_args->ttl = ttl;
Florin Corasa2157cf2016-08-16 21:09:14 +02001089 vnet_lisp_map_cache_add_del (m_args, &dst_map_index);
Florin Corasf727db92016-06-23 15:01:58 +02001090
Florin Corasa2157cf2016-08-16 21:09:14 +02001091 if (res_map_index)
1092 res_map_index[0] = dst_map_index;
1093 }
Filip Tehlar195bcee2016-05-13 17:37:35 +02001094 }
Florin Corasf727db92016-06-23 15:01:58 +02001095 else
1096 {
Florin Coras71893ac2016-07-10 20:09:32 +02001097 if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02001098 {
1099 clib_warning ("cannot delete mapping for eid %U",
1100 format_gid_address, eid);
1101 return -1;
1102 }
Florin Corasf727db92016-06-23 15:01:58 +02001103
1104 m_args->is_add = 0;
Florin Coras71893ac2016-07-10 20:09:32 +02001105 gid_address_copy (&m_args->eid, eid);
Florin Corasf727db92016-06-23 15:01:58 +02001106 m_args->locator_set_index = old_map->locator_set_index;
1107
1108 /* delete mapping associated from map-cache */
1109 vnet_lisp_map_cache_add_del (m_args, 0);
1110
1111 ls_args->is_add = 0;
1112 ls_args->index = old_map->locator_set_index;
1113 /* delete locator set */
1114 vnet_lisp_add_del_locator_set (ls_args, 0);
Filip Tehlarb93222f2016-07-07 09:58:08 +02001115
Filip Tehlar9677a942016-11-28 10:23:31 +01001116 /* delete timer associated to the mapping if any */
1117 if (old_map->timer_set)
1118 mapping_delete_timer (lcm, mi);
1119
Filip Tehlarb93222f2016-07-07 09:58:08 +02001120 /* return old mapping index */
Andrej Kozemcak438109d2016-07-22 12:54:12 +02001121 if (res_map_index)
Florin Corasa2157cf2016-08-16 21:09:14 +02001122 res_map_index[0] = mi;
Florin Corasf727db92016-06-23 15:01:58 +02001123 }
1124
Filip Tehlar195bcee2016-05-13 17:37:35 +02001125 /* success */
Florin Corasf727db92016-06-23 15:01:58 +02001126 return 0;
Filip Tehlar195bcee2016-05-13 17:37:35 +02001127}
1128
Filip Tehlar58f886a2016-05-30 15:57:40 +02001129int
Florin Corasf727db92016-06-23 15:01:58 +02001130vnet_lisp_clear_all_remote_adjacencies (void)
Filip Tehlar58f886a2016-05-30 15:57:40 +02001131{
1132 int rv = 0;
Florin Corasa2157cf2016-08-16 21:09:14 +02001133 u32 mi, *map_indices = 0, *map_indexp;
1134 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1135 vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
1136 vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
Filip Tehlar58f886a2016-05-30 15:57:40 +02001137
Florin Corasa2157cf2016-08-16 21:09:14 +02001138 /* *INDENT-OFF* */
Filip Tehlar58f886a2016-05-30 15:57:40 +02001139 pool_foreach_index (mi, lcm->mapping_pool,
Florin Corasa2157cf2016-08-16 21:09:14 +02001140 ({
1141 vec_add1 (map_indices, mi);
1142 }));
1143 /* *INDENT-ON* */
Filip Tehlar58f886a2016-05-30 15:57:40 +02001144
1145 vec_foreach (map_indexp, map_indices)
Florin Corasa2157cf2016-08-16 21:09:14 +02001146 {
1147 mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
1148 if (!map->local)
1149 {
1150 dp_del_fwd_entry (lcm, 0, map_indexp[0]);
Filip Tehlar58f886a2016-05-30 15:57:40 +02001151
Florin Corasa2157cf2016-08-16 21:09:14 +02001152 dm_args->is_add = 0;
1153 gid_address_copy (&dm_args->eid, &map->eid);
1154 dm_args->locator_set_index = map->locator_set_index;
Filip Tehlar58f886a2016-05-30 15:57:40 +02001155
Florin Corasa2157cf2016-08-16 21:09:14 +02001156 /* delete mapping associated to fwd entry */
1157 vnet_lisp_map_cache_add_del (dm_args, 0);
Filip Tehlar58f886a2016-05-30 15:57:40 +02001158
Florin Corasa2157cf2016-08-16 21:09:14 +02001159 ls->is_add = 0;
1160 ls->local = 0;
1161 ls->index = map->locator_set_index;
1162 /* delete locator set */
1163 rv = vnet_lisp_add_del_locator_set (ls, 0);
1164 if (rv != 0)
1165 goto cleanup;
1166 }
1167 }
Filip Tehlar58f886a2016-05-30 15:57:40 +02001168
1169cleanup:
1170 if (map_indices)
1171 vec_free (map_indices);
1172 return rv;
1173}
1174
Filip Tehlar195bcee2016-05-13 17:37:35 +02001175/**
Florin Coras71893ac2016-07-10 20:09:32 +02001176 * Adds adjacency or removes forwarding entry associated to remote mapping.
1177 * Note that adjacencies are not stored, they only result in forwarding entries
1178 * being created.
Florin Corasf727db92016-06-23 15:01:58 +02001179 */
Florin Corasf3dc11a2017-01-24 03:13:43 -08001180int
1181vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
Florin Corasf727db92016-06-23 15:01:58 +02001182{
Florin Corasf3dc11a2017-01-24 03:13:43 -08001183 lisp_cp_main_t *lcm = &lisp_control_main;
Florin Coras71893ac2016-07-10 20:09:32 +02001184 u32 local_mi, remote_mi = ~0;
Florin Corasf727db92016-06-23 15:01:58 +02001185
1186 if (vnet_lisp_enable_disable_status () == 0)
1187 {
1188 clib_warning ("LISP is disabled!");
1189 return VNET_API_ERROR_LISP_DISABLED;
1190 }
1191
Filip Tehlar69a9b762016-09-23 10:00:52 +02001192 remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
Florin Corasf3dc11a2017-01-24 03:13:43 -08001193 &a->reid, &a->leid);
Florin Coras71893ac2016-07-10 20:09:32 +02001194 if (GID_LOOKUP_MISS == remote_mi)
1195 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001196 clib_warning ("Remote eid %U not found. Cannot add adjacency!",
Florin Corasf3dc11a2017-01-24 03:13:43 -08001197 format_gid_address, &a->reid);
Florin Corasf727db92016-06-23 15:01:58 +02001198
Florin Coras71893ac2016-07-10 20:09:32 +02001199 return -1;
1200 }
1201
Florin Corasf3dc11a2017-01-24 03:13:43 -08001202 if (a->is_add)
Florin Corasf727db92016-06-23 15:01:58 +02001203 {
1204 /* TODO 1) check if src/dst 2) once we have src/dst working, use it in
1205 * delete*/
1206
1207 /* check if source eid has an associated mapping. If pitr mode is on,
1208 * just use the pitr's mapping */
Florin Coras71893ac2016-07-10 20:09:32 +02001209 local_mi = lcm->lisp_pitr ? lcm->pitr_map_index :
Florin Corasf3dc11a2017-01-24 03:13:43 -08001210 gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->leid);
Florin Corasf727db92016-06-23 15:01:58 +02001211
Florin Coras71893ac2016-07-10 20:09:32 +02001212 if (GID_LOOKUP_MISS == local_mi)
Florin Corasa2157cf2016-08-16 21:09:14 +02001213 {
1214 clib_warning ("Local eid %U not found. Cannot add adjacency!",
Florin Corasf3dc11a2017-01-24 03:13:43 -08001215 format_gid_address, &a->leid);
Florin Corasf727db92016-06-23 15:01:58 +02001216
Florin Corasa2157cf2016-08-16 21:09:14 +02001217 return -1;
1218 }
Florin Corasf727db92016-06-23 15:01:58 +02001219
Florin Coras71893ac2016-07-10 20:09:32 +02001220 /* update forwarding */
1221 dp_add_fwd_entry (lcm, local_mi, remote_mi);
Florin Corasf727db92016-06-23 15:01:58 +02001222 }
1223 else
Florin Coras71893ac2016-07-10 20:09:32 +02001224 dp_del_fwd_entry (lcm, 0, remote_mi);
Florin Corasf727db92016-06-23 15:01:58 +02001225
1226 return 0;
1227}
1228
1229int
Florin Corasdca88042016-09-14 16:01:38 +02001230vnet_lisp_set_map_request_mode (u8 mode)
1231{
1232 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1233
1234 if (vnet_lisp_enable_disable_status () == 0)
1235 {
1236 clib_warning ("LISP is disabled!");
1237 return VNET_API_ERROR_LISP_DISABLED;
1238 }
1239
1240 if (mode >= _MR_MODE_MAX)
1241 {
1242 clib_warning ("Invalid LISP map request mode %d!", mode);
1243 return VNET_API_ERROR_INVALID_ARGUMENT;
1244 }
1245
1246 lcm->map_request_mode = mode;
1247 return 0;
1248}
1249
Filip Tehlar53f09e32016-05-19 14:25:44 +02001250int
1251vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
1252{
Florin Corasa2157cf2016-08-16 21:09:14 +02001253 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar53f09e32016-05-19 14:25:44 +02001254 u32 locator_set_index = ~0;
Florin Corasa2157cf2016-08-16 21:09:14 +02001255 mapping_t *m;
1256 uword *p;
Filip Tehlar53f09e32016-05-19 14:25:44 +02001257
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001258 if (vnet_lisp_enable_disable_status () == 0)
1259 {
1260 clib_warning ("LISP is disabled!");
1261 return VNET_API_ERROR_LISP_DISABLED;
1262 }
1263
Filip Tehlar53f09e32016-05-19 14:25:44 +02001264 p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
1265 if (!p)
1266 {
1267 clib_warning ("locator-set %v doesn't exist", locator_set_name);
1268 return -1;
1269 }
1270 locator_set_index = p[0];
1271
1272 if (is_add)
1273 {
1274 pool_get (lcm->mapping_pool, m);
1275 m->locator_set_index = locator_set_index;
1276 m->local = 1;
1277 lcm->pitr_map_index = m - lcm->mapping_pool;
1278
1279 /* enable pitr mode */
1280 lcm->lisp_pitr = 1;
1281 }
1282 else
1283 {
1284 /* remove pitr mapping */
1285 pool_put_index (lcm->mapping_pool, lcm->pitr_map_index);
1286
1287 /* disable pitr mode */
1288 lcm->lisp_pitr = 0;
1289 }
1290 return 0;
1291}
1292
Florin Corasba888e42017-01-24 11:38:18 -08001293/**
1294 * Configure Proxy-ETR
1295 *
1296 * @param ip PETR's IP address
1297 * @param is_add Flag that indicates if this is an addition or removal
1298 *
1299 * return 0 on success
1300 */
1301int
1302vnet_lisp_use_petr (ip_address_t * ip, u8 is_add)
1303{
1304 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1305 u32 ls_index = ~0;
1306 mapping_t *m;
1307 vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
1308 locator_t loc;
1309
1310 if (vnet_lisp_enable_disable_status () == 0)
1311 {
1312 clib_warning ("LISP is disabled!");
1313 return VNET_API_ERROR_LISP_DISABLED;
1314 }
1315
1316 memset (ls_args, 0, sizeof (*ls_args));
1317
1318 if (is_add)
1319 {
1320 /* Create dummy petr locator-set */
1321 gid_address_from_ip (&loc.address, ip);
1322 loc.priority = 1;
1323 loc.state = loc.weight = 1;
Florin Coras2743cc42017-01-29 16:42:20 -08001324 loc.local = 0;
Florin Corasba888e42017-01-24 11:38:18 -08001325
1326 ls_args->is_add = 1;
1327 ls_args->index = ~0;
1328 vec_add1 (ls_args->locators, loc);
1329 vnet_lisp_add_del_locator_set (ls_args, &ls_index);
1330
1331 /* Add petr mapping */
1332 pool_get (lcm->mapping_pool, m);
1333 m->locator_set_index = ls_index;
1334 lcm->petr_map_index = m - lcm->mapping_pool;
1335
1336 /* Enable use-petr */
1337 lcm->flags |= LISP_FLAG_USE_PETR;
1338 }
1339 else
1340 {
1341 m = pool_elt_at_index (lcm->mapping_pool, lcm->petr_map_index);
1342
1343 /* Remove petr locator */
1344 ls_args->is_add = 0;
1345 ls_args->index = m->locator_set_index;
1346 vnet_lisp_add_del_locator_set (ls_args, 0);
1347
1348 /* Remove petr mapping */
1349 pool_put_index (lcm->mapping_pool, lcm->petr_map_index);
1350
1351 /* Disable use-petr */
1352 lcm->flags &= ~LISP_FLAG_USE_PETR;
1353 }
1354 return 0;
1355}
1356
Florin Corase127a7e2016-02-18 22:20:01 +01001357/* cleans locator to locator-set data and removes locators not part of
1358 * any locator-set */
1359static void
1360clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
1361{
Filip Tehlard1c5cc32016-05-30 10:39:20 +02001362 u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
Florin Corasa2157cf2016-08-16 21:09:14 +02001363 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
1364 for (i = 0; i < vec_len (ls->locator_indices); i++)
Florin Corase127a7e2016-02-18 22:20:01 +01001365 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001366 loc_indexp = vec_elt_at_index (ls->locator_indices, i);
1367 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1368 loc_indexp[0]);
1369 for (j = 0; j < vec_len (ls_indexes[0]); j++)
1370 {
1371 ls_indexp = vec_elt_at_index (ls_indexes[0], j);
1372 if (ls_indexp[0] == lsi)
1373 break;
1374 }
Florin Corase127a7e2016-02-18 22:20:01 +01001375
Florin Corasa2157cf2016-08-16 21:09:14 +02001376 /* delete index for removed locator-set */
1377 vec_del1 (ls_indexes[0], j);
Florin Corase127a7e2016-02-18 22:20:01 +01001378
1379 /* delete locator if it's part of no locator-set */
1380 if (vec_len (ls_indexes[0]) == 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02001381 {
1382 pool_put_index (lcm->locator_pool, loc_indexp[0]);
1383 vec_add1 (to_be_deleted, i);
1384 }
Filip Tehlard1c5cc32016-05-30 10:39:20 +02001385 }
1386
1387 if (to_be_deleted)
1388 {
1389 for (i = 0; i < vec_len (to_be_deleted); i++)
Florin Corasa2157cf2016-08-16 21:09:14 +02001390 {
1391 loc_indexp = vec_elt_at_index (to_be_deleted, i);
1392 vec_del1 (ls->locator_indices, loc_indexp[0]);
1393 }
Filip Tehlard1c5cc32016-05-30 10:39:20 +02001394 vec_free (to_be_deleted);
Florin Corase127a7e2016-02-18 22:20:01 +01001395 }
1396}
Filip Tehlard1c5cc32016-05-30 10:39:20 +02001397
Florin Corasf727db92016-06-23 15:01:58 +02001398static inline uword *
1399get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001400{
Florin Corasa2157cf2016-08-16 21:09:14 +02001401 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001402
Florin Corasa2157cf2016-08-16 21:09:14 +02001403 ASSERT (a != NULL);
1404 ASSERT (p != NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001405
1406 /* find locator-set */
1407 if (a->local)
1408 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001409 p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001410 }
1411 else
1412 {
1413 *p = a->index;
1414 }
1415
1416 return p;
1417}
1418
Florin Corasf727db92016-06-23 15:01:58 +02001419static inline int
1420is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
Florin Corasa2157cf2016-08-16 21:09:14 +02001421 locator_t * loc)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001422{
Florin Corasa2157cf2016-08-16 21:09:14 +02001423 locator_t *itloc;
1424 u32 *locit;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001425
Florin Corasa2157cf2016-08-16 21:09:14 +02001426 ASSERT (ls != NULL);
1427 ASSERT (loc != NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001428
Florin Corasa2157cf2016-08-16 21:09:14 +02001429 vec_foreach (locit, ls->locator_indices)
1430 {
1431 itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1432 if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
1433 (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
1434 {
1435 clib_warning ("Duplicate locator");
1436 return VNET_API_ERROR_VALUE_EXIST;
1437 }
1438 }
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001439
1440 return 0;
1441}
1442
Florin Corasf727db92016-06-23 15:01:58 +02001443static inline void
Florin Corasa2157cf2016-08-16 21:09:14 +02001444remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
1445 u32 ls_index, u32 loc_id)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001446{
Florin Corasa2157cf2016-08-16 21:09:14 +02001447 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1448 u32 **ls_indexes = NULL;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001449
Florin Corasa2157cf2016-08-16 21:09:14 +02001450 ASSERT (ls != NULL);
1451 ASSERT (locit != NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001452
Florin Corasa2157cf2016-08-16 21:09:14 +02001453 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
1454 pool_put_index (lcm->locator_pool, locit[0]);
1455 vec_del1 (ls->locator_indices, loc_id);
1456 vec_del1 (ls_indexes[0], ls_index);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001457}
1458
1459int
1460vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
Florin Corasa2157cf2016-08-16 21:09:14 +02001461 locator_set_t * ls, u32 * ls_result)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001462{
Florin Corasa2157cf2016-08-16 21:09:14 +02001463 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1464 locator_t *loc = NULL, *itloc = NULL;
1465 uword _p = (u32) ~ 0, *p = &_p;
1466 u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001467 u32 loc_id = ~0;
1468 int ret = 0;
1469
Florin Corasa2157cf2016-08-16 21:09:14 +02001470 ASSERT (a != NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001471
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001472 if (vnet_lisp_enable_disable_status () == 0)
1473 {
1474 clib_warning ("LISP is disabled!");
1475 return VNET_API_ERROR_LISP_DISABLED;
1476 }
1477
Florin Corasa2157cf2016-08-16 21:09:14 +02001478 p = get_locator_set_index (a, p);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001479 if (!p)
1480 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001481 clib_warning ("locator-set %v doesn't exist", a->name);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001482 return VNET_API_ERROR_INVALID_ARGUMENT;
1483 }
1484
1485 if (ls == 0)
1486 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001487 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001488 if (!ls)
Florin Corasa2157cf2016-08-16 21:09:14 +02001489 {
1490 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1491 p[0]);
1492 return VNET_API_ERROR_INVALID_ARGUMENT;
1493 }
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001494 }
1495
1496 if (a->is_add)
1497 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001498 if (ls_result)
1499 ls_result[0] = p[0];
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001500
Florin Corasa2157cf2016-08-16 21:09:14 +02001501 /* allocate locators */
1502 vec_foreach (itloc, a->locators)
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001503 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001504 ret = is_locator_in_locator_set (lcm, ls, itloc);
1505 if (0 != ret)
1506 {
1507 return ret;
1508 }
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001509
Florin Corasa2157cf2016-08-16 21:09:14 +02001510 pool_get (lcm->locator_pool, loc);
1511 loc[0] = itloc[0];
1512 loc_index = loc - lcm->locator_pool;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001513
Florin Corasa2157cf2016-08-16 21:09:14 +02001514 vec_add1 (ls->locator_indices, loc_index);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001515
Florin Corasa2157cf2016-08-16 21:09:14 +02001516 vec_validate (lcm->locator_to_locator_sets, loc_index);
1517 ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
1518 loc_index);
Filip Tehlarc5bb0d62016-09-02 12:14:31 +02001519 vec_add1 (ls_indexes[0], p[0]);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001520 }
Florin Corasa2157cf2016-08-16 21:09:14 +02001521 }
1522 else
1523 {
1524 ls_index = p[0];
1525
1526 itloc = a->locators;
1527 loc_id = 0;
1528 vec_foreach (locit, ls->locator_indices)
1529 {
1530 loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
1531
1532 if (loc->local && loc->sw_if_index == itloc->sw_if_index)
1533 {
1534 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1535 }
1536 if (0 == loc->local &&
1537 !gid_address_cmp (&loc->address, &itloc->address))
1538 {
1539 remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
1540 }
1541
1542 loc_id++;
1543 }
1544 }
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001545
1546 return 0;
1547}
1548
Florin Corase127a7e2016-02-18 22:20:01 +01001549int
1550vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
Florin Corasa2157cf2016-08-16 21:09:14 +02001551 u32 * ls_result)
Florin Corase127a7e2016-02-18 22:20:01 +01001552{
Florin Corasa2157cf2016-08-16 21:09:14 +02001553 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1554 locator_set_t *ls;
1555 uword _p = (u32) ~ 0, *p = &_p;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001556 u32 ls_index;
Florin Corasa2157cf2016-08-16 21:09:14 +02001557 u32 **eid_indexes;
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001558 int ret = 0;
Florin Corase127a7e2016-02-18 22:20:01 +01001559
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001560 if (vnet_lisp_enable_disable_status () == 0)
1561 {
1562 clib_warning ("LISP is disabled!");
1563 return VNET_API_ERROR_LISP_DISABLED;
1564 }
1565
Florin Corase127a7e2016-02-18 22:20:01 +01001566 if (a->is_add)
1567 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001568 p = get_locator_set_index (a, p);
Florin Corase127a7e2016-02-18 22:20:01 +01001569
1570 /* overwrite */
Florin Corasa2157cf2016-08-16 21:09:14 +02001571 if (p && p[0] != (u32) ~ 0)
1572 {
1573 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
1574 if (!ls)
1575 {
1576 clib_warning ("locator-set %d to be overwritten doesn't exist!",
1577 p[0]);
1578 return -1;
1579 }
Florin Corase127a7e2016-02-18 22:20:01 +01001580
Florin Corasa2157cf2016-08-16 21:09:14 +02001581 /* clean locator to locator-set vectors and remove locators if
1582 * they're not part of another locator-set */
1583 clean_locator_to_locator_set (lcm, p[0]);
Florin Corase127a7e2016-02-18 22:20:01 +01001584
Florin Corasa2157cf2016-08-16 21:09:14 +02001585 /* remove locator indices from locator set */
1586 vec_free (ls->locator_indices);
Florin Corase127a7e2016-02-18 22:20:01 +01001587
Florin Corasa2157cf2016-08-16 21:09:14 +02001588 ls_index = p[0];
Florin Corase127a7e2016-02-18 22:20:01 +01001589
Florin Corasa2157cf2016-08-16 21:09:14 +02001590 if (ls_result)
1591 ls_result[0] = p[0];
1592 }
Florin Corase127a7e2016-02-18 22:20:01 +01001593 /* new locator-set */
1594 else
Florin Corasa2157cf2016-08-16 21:09:14 +02001595 {
1596 pool_get (lcm->locator_set_pool, ls);
1597 memset (ls, 0, sizeof (*ls));
1598 ls_index = ls - lcm->locator_set_pool;
Florin Corase127a7e2016-02-18 22:20:01 +01001599
Florin Corasa2157cf2016-08-16 21:09:14 +02001600 if (a->local)
1601 {
1602 ls->name = vec_dup (a->name);
Florin Corase127a7e2016-02-18 22:20:01 +01001603
Florin Corasa2157cf2016-08-16 21:09:14 +02001604 if (!lcm->locator_set_index_by_name)
1605 lcm->locator_set_index_by_name = hash_create_vec (
1606 /* size */
1607 0,
1608 sizeof
1609 (ls->name
1610 [0]),
1611 sizeof
1612 (uword));
1613 hash_set_mem (lcm->locator_set_index_by_name, ls->name,
1614 ls_index);
Florin Corase127a7e2016-02-18 22:20:01 +01001615
Florin Corasa2157cf2016-08-16 21:09:14 +02001616 /* mark as local locator-set */
1617 vec_add1 (lcm->local_locator_set_indexes, ls_index);
1618 }
1619 ls->local = a->local;
1620 if (ls_result)
1621 ls_result[0] = ls_index;
1622 }
Florin Corase127a7e2016-02-18 22:20:01 +01001623
Florin Corasa2157cf2016-08-16 21:09:14 +02001624 ret = vnet_lisp_add_del_locator (a, ls, NULL);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001625 if (0 != ret)
Florin Corasa2157cf2016-08-16 21:09:14 +02001626 {
1627 return ret;
1628 }
Florin Corase127a7e2016-02-18 22:20:01 +01001629 }
1630 else
1631 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001632 p = get_locator_set_index (a, p);
Andrej Kozemcak6a2e4392016-05-26 12:20:08 +02001633 if (!p)
Florin Corasa2157cf2016-08-16 21:09:14 +02001634 {
1635 clib_warning ("locator-set %v doesn't exists", a->name);
1636 return -1;
1637 }
Florin Corase127a7e2016-02-18 22:20:01 +01001638
Florin Corasa2157cf2016-08-16 21:09:14 +02001639 ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
Florin Corase127a7e2016-02-18 22:20:01 +01001640 if (!ls)
Florin Corasa2157cf2016-08-16 21:09:14 +02001641 {
1642 clib_warning ("locator-set with index %d doesn't exists", p[0]);
1643 return -1;
1644 }
Florin Corase127a7e2016-02-18 22:20:01 +01001645
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001646 if (lcm->mreq_itr_rlocs == p[0])
Florin Corasa2157cf2016-08-16 21:09:14 +02001647 {
1648 clib_warning ("Can't delete the locator-set used to constrain "
1649 "the itr-rlocs in map-requests!");
1650 return -1;
1651 }
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001652
Florin Corasa2157cf2016-08-16 21:09:14 +02001653 if (vec_len (lcm->locator_set_to_eids) != 0)
1654 {
1655 eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
1656 if (vec_len (eid_indexes[0]) != 0)
1657 {
1658 clib_warning
1659 ("Can't delete a locator that supports a mapping!");
1660 return -1;
1661 }
1662 }
Andrej Kozemcakb92feb62016-03-31 13:51:42 +02001663
1664 /* clean locator to locator-sets data */
1665 clean_locator_to_locator_set (lcm, p[0]);
1666
1667 if (ls->local)
Florin Corasa2157cf2016-08-16 21:09:14 +02001668 {
1669 u32 it, lsi;
Andrej Kozemcakb92feb62016-03-31 13:51:42 +02001670
Florin Corasa2157cf2016-08-16 21:09:14 +02001671 vec_foreach_index (it, lcm->local_locator_set_indexes)
1672 {
1673 lsi = vec_elt (lcm->local_locator_set_indexes, it);
1674 if (lsi == p[0])
1675 {
1676 vec_del1 (lcm->local_locator_set_indexes, it);
1677 break;
1678 }
1679 }
1680 hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
1681 }
1682 vec_free (ls->name);
1683 vec_free (ls->locator_indices);
1684 pool_put (lcm->locator_set_pool, ls);
Andrej Kozemcakb92feb62016-03-31 13:51:42 +02001685 }
1686 return 0;
1687}
1688
Filip Tehlar397fd7d2016-10-26 14:31:24 +02001689int
1690vnet_lisp_rloc_probe_enable_disable (u8 is_enable)
1691{
1692 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1693
1694 lcm->rloc_probing = is_enable;
1695 return 0;
1696}
1697
1698int
1699vnet_lisp_map_register_enable_disable (u8 is_enable)
1700{
1701 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1702
1703 lcm->map_registering = is_enable;
1704 return 0;
1705}
1706
Filip Tehlar46d4e362016-05-09 09:39:26 +02001707clib_error_t *
Florin Corasf727db92016-06-23 15:01:58 +02001708vnet_lisp_enable_disable (u8 is_enable)
Filip Tehlar46d4e362016-05-09 09:39:26 +02001709{
Florin Coras1a1adc72016-07-22 01:45:30 +02001710 u32 vni, dp_table;
Florin Corasa2157cf2016-08-16 21:09:14 +02001711 clib_error_t *error = 0;
1712 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1713 vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
Filip Tehlar46d4e362016-05-09 09:39:26 +02001714
Florin Corasf727db92016-06-23 15:01:58 +02001715 a->is_en = is_enable;
Filip Tehlar46d4e362016-05-09 09:39:26 +02001716 error = vnet_lisp_gpe_enable_disable (a);
1717 if (error)
1718 {
1719 return clib_error_return (0, "failed to %s data-plane!",
Florin Corasa2157cf2016-08-16 21:09:14 +02001720 a->is_en ? "enable" : "disable");
Filip Tehlar46d4e362016-05-09 09:39:26 +02001721 }
1722
Florin Corasf727db92016-06-23 15:01:58 +02001723 if (is_enable)
Filip Tehlar46d4e362016-05-09 09:39:26 +02001724 {
Florin Coras1a1adc72016-07-22 01:45:30 +02001725 /* enable all l2 and l3 ifaces */
Florin Corasa2157cf2016-08-16 21:09:14 +02001726
1727 /* *INDENT-OFF* */
Florin Coras1a1adc72016-07-22 01:45:30 +02001728 hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
1729 dp_add_del_iface(lcm, vni, 0, 1);
1730 }));
Florin Coras1a1adc72016-07-22 01:45:30 +02001731 hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
1732 dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1);
Florin Corasf727db92016-06-23 15:01:58 +02001733 }));
Florin Corasa2157cf2016-08-16 21:09:14 +02001734 /* *INDENT-ON* */
Filip Tehlar46d4e362016-05-09 09:39:26 +02001735 }
1736 else
1737 {
Florin Corasf727db92016-06-23 15:01:58 +02001738 /* clear interface table */
Florin Corasa2157cf2016-08-16 21:09:14 +02001739 hash_free (lcm->fwd_entry_by_mapping_index);
1740 pool_free (lcm->fwd_entry_pool);
Filip Tehlar46d4e362016-05-09 09:39:26 +02001741 }
1742
1743 /* update global flag */
Florin Corasf727db92016-06-23 15:01:58 +02001744 lcm->is_enabled = is_enable;
Filip Tehlar46d4e362016-05-09 09:39:26 +02001745
1746 return 0;
1747}
1748
Filip Tehlar46d4e362016-05-09 09:39:26 +02001749u8
1750vnet_lisp_enable_disable_status (void)
1751{
Florin Corasa2157cf2016-08-16 21:09:14 +02001752 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar46d4e362016-05-09 09:39:26 +02001753 return lcm->is_enabled;
1754}
1755
Florin Corase127a7e2016-02-18 22:20:01 +01001756int
1757vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
1758{
Florin Corasa2157cf2016-08-16 21:09:14 +02001759 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Florin Corase127a7e2016-02-18 22:20:01 +01001760 u32 i;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02001761 lisp_msmr_t _mr, *mr = &_mr;
Florin Corase127a7e2016-02-18 22:20:01 +01001762
Andrej Kozemcak8ebb2a12016-06-07 12:25:20 +02001763 if (vnet_lisp_enable_disable_status () == 0)
1764 {
1765 clib_warning ("LISP is disabled!");
1766 return VNET_API_ERROR_LISP_DISABLED;
1767 }
1768
Florin Corase127a7e2016-02-18 22:20:01 +01001769 if (a->is_add)
1770 {
Filip Tehlara5abdeb2016-07-18 17:35:40 +02001771
1772 if (get_map_resolver (&a->address))
Florin Corasa2157cf2016-08-16 21:09:14 +02001773 {
1774 clib_warning ("map-resolver %U already exists!", format_ip_address,
1775 &a->address);
1776 return -1;
1777 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02001778
1779 memset (mr, 0, sizeof (*mr));
Florin Corasa2157cf2016-08-16 21:09:14 +02001780 ip_address_copy (&mr->address, &a->address);
1781 vec_add1 (lcm->map_resolvers, *mr);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02001782
1783 if (vec_len (lcm->map_resolvers) == 1)
Florin Corasa2157cf2016-08-16 21:09:14 +02001784 lcm->do_map_resolver_election = 1;
Florin Corase127a7e2016-02-18 22:20:01 +01001785 }
1786 else
1787 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001788 for (i = 0; i < vec_len (lcm->map_resolvers); i++)
1789 {
1790 mr = vec_elt_at_index (lcm->map_resolvers, i);
1791 if (!ip_address_cmp (&mr->address, &a->address))
1792 {
1793 if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
1794 lcm->do_map_resolver_election = 1;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02001795
Florin Corasa2157cf2016-08-16 21:09:14 +02001796 vec_del1 (lcm->map_resolvers, i);
1797 break;
1798 }
1799 }
Florin Corase127a7e2016-02-18 22:20:01 +01001800 }
1801 return 0;
1802}
1803
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001804int
1805vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
1806{
Florin Corasa2157cf2016-08-16 21:09:14 +02001807 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
1808 uword *p = 0;
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001809
Florin Corasf727db92016-06-23 15:01:58 +02001810 if (vnet_lisp_enable_disable_status () == 0)
1811 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001812 clib_warning ("LISP is disabled!");
Florin Corasf727db92016-06-23 15:01:58 +02001813 return VNET_API_ERROR_LISP_DISABLED;
1814 }
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001815
1816 if (a->is_add)
1817 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001818 p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001819 if (!p)
Florin Corasa2157cf2016-08-16 21:09:14 +02001820 {
1821 clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
1822 return VNET_API_ERROR_INVALID_ARGUMENT;
1823 }
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02001824
1825 lcm->mreq_itr_rlocs = p[0];
1826 }
1827 else
1828 {
1829 lcm->mreq_itr_rlocs = ~0;
1830 }
1831
1832 return 0;
1833}
1834
Florin Corase127a7e2016-02-18 22:20:01 +01001835/* Statistics (not really errors) */
1836#define foreach_lisp_cp_lookup_error \
1837_(DROP, "drop") \
1838_(MAP_REQUESTS_SENT, "map-request sent")
1839
Florin Corasa2157cf2016-08-16 21:09:14 +02001840static char *lisp_cp_lookup_error_strings[] = {
Florin Corase127a7e2016-02-18 22:20:01 +01001841#define _(sym,string) string,
1842 foreach_lisp_cp_lookup_error
1843#undef _
1844};
1845
1846typedef enum
1847{
1848#define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
Florin Corasa2157cf2016-08-16 21:09:14 +02001849 foreach_lisp_cp_lookup_error
Florin Corase127a7e2016-02-18 22:20:01 +01001850#undef _
1851 LISP_CP_LOOKUP_N_ERROR,
1852} lisp_cp_lookup_error_t;
1853
1854typedef enum
1855{
1856 LISP_CP_LOOKUP_NEXT_DROP,
Florin Corase127a7e2016-02-18 22:20:01 +01001857 LISP_CP_LOOKUP_N_NEXT,
1858} lisp_cp_lookup_next_t;
1859
1860typedef struct
1861{
1862 gid_address_t dst_eid;
Andrej Kozemcak94e34762016-05-25 12:43:21 +02001863 ip_address_t map_resolver_ip;
Florin Corase127a7e2016-02-18 22:20:01 +01001864} lisp_cp_lookup_trace_t;
1865
1866u8 *
1867format_lisp_cp_lookup_trace (u8 * s, va_list * args)
1868{
1869 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
1870 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
Florin Corasa2157cf2016-08-16 21:09:14 +02001871 lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
Florin Corase127a7e2016-02-18 22:20:01 +01001872
1873 s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
Florin Corasa2157cf2016-08-16 21:09:14 +02001874 format_ip_address, &t->map_resolver_ip, format_gid_address,
1875 &t->dst_eid);
Florin Corase127a7e2016-02-18 22:20:01 +01001876 return s;
1877}
1878
Florin Coras1c494842016-06-16 21:08:56 +02001879int
1880get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
Florin Corasa2157cf2016-08-16 21:09:14 +02001881 ip_address_t * sloc)
Florin Corasc2c90082016-06-13 18:37:15 +02001882{
Filip Tehlar397fd7d2016-10-26 14:31:24 +02001883 lisp_msmr_t *mrit;
Florin Corasa2157cf2016-08-16 21:09:14 +02001884 ip_address_t *a;
Florin Corase127a7e2016-02-18 22:20:01 +01001885
Florin Corasa2157cf2016-08-16 21:09:14 +02001886 if (vec_len (lcm->map_resolvers) == 0)
Florin Corase127a7e2016-02-18 22:20:01 +01001887 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001888 clib_warning ("No map-resolver configured");
Florin Coras1c494842016-06-16 21:08:56 +02001889 return 0;
Florin Corase127a7e2016-02-18 22:20:01 +01001890 }
1891
Florin Corasddfafb82016-05-13 18:09:56 +02001892 /* find the first mr ip we have a route to and the ip of the
1893 * iface that has a route to it */
Florin Corasa2157cf2016-08-16 21:09:14 +02001894 vec_foreach (mrit, lcm->map_resolvers)
1895 {
1896 a = &mrit->address;
1897 if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
1898 {
1899 ip_address_copy (mr_ip, a);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02001900
Florin Corasa2157cf2016-08-16 21:09:14 +02001901 /* also update globals */
1902 return 1;
1903 }
1904 }
Florin Corasddfafb82016-05-13 18:09:56 +02001905
Florin Corasa2157cf2016-08-16 21:09:14 +02001906 clib_warning ("Can't find map-resolver and local interface ip!");
Florin Coras1c494842016-06-16 21:08:56 +02001907 return 0;
Florin Corasddfafb82016-05-13 18:09:56 +02001908}
Filip Tehlar254b0362016-04-07 10:04:34 +02001909
Filip Tehlarbeceab92016-04-20 17:21:55 +02001910static gid_address_t *
Filip Tehlar254b0362016-04-07 10:04:34 +02001911build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
1912{
Florin Corasa2157cf2016-08-16 21:09:14 +02001913 void *addr;
Filip Tehlar254b0362016-04-07 10:04:34 +02001914 u32 i;
Florin Corasa2157cf2016-08-16 21:09:14 +02001915 locator_t *loc;
1916 u32 *loc_indexp;
1917 ip_interface_address_t *ia = 0;
1918 gid_address_t gid_data, *gid = &gid_data;
1919 gid_address_t *rlocs = 0;
1920 ip_prefix_t *ippref = &gid_address_ippref (gid);
1921 ip_address_t *rloc = &ip_prefix_addr (ippref);
Filip Tehlar254b0362016-04-07 10:04:34 +02001922
Filip Tehlar324112f2016-06-02 16:07:38 +02001923 memset (gid, 0, sizeof (gid[0]));
Filip Tehlarbeceab92016-04-20 17:21:55 +02001924 gid_address_type (gid) = GID_ADDR_IP_PREFIX;
Florin Corasa2157cf2016-08-16 21:09:14 +02001925 for (i = 0; i < vec_len (loc_set->locator_indices); i++)
Filip Tehlar254b0362016-04-07 10:04:34 +02001926 {
Florin Corasa2157cf2016-08-16 21:09:14 +02001927 loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
Filip Tehlar254b0362016-04-07 10:04:34 +02001928 loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
1929
Filip Tehlar254b0362016-04-07 10:04:34 +02001930 /* Add ipv4 locators first TODO sort them */
Florin Corasa2157cf2016-08-16 21:09:14 +02001931
1932 /* *INDENT-OFF* */
Filip Tehlar254b0362016-04-07 10:04:34 +02001933 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
1934 loc->sw_if_index, 1 /* unnumbered */,
1935 ({
Florin Coras1c494842016-06-16 21:08:56 +02001936 addr = ip_interface_address_get_address (&lcm->im4->lookup_main, ia);
1937 ip_address_set (rloc, addr, IP4);
Florin Corasddfafb82016-05-13 18:09:56 +02001938 ip_prefix_len (ippref) = 32;
Andrej Kozemcak438109d2016-07-22 12:54:12 +02001939 ip_prefix_normalize (ippref);
Filip Tehlarbeceab92016-04-20 17:21:55 +02001940 vec_add1 (rlocs, gid[0]);
Filip Tehlar254b0362016-04-07 10:04:34 +02001941 }));
1942
Filip Tehlar254b0362016-04-07 10:04:34 +02001943 /* Add ipv6 locators */
1944 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
1945 loc->sw_if_index, 1 /* unnumbered */,
1946 ({
Florin Coras1c494842016-06-16 21:08:56 +02001947 addr = ip_interface_address_get_address (&lcm->im6->lookup_main, ia);
1948 ip_address_set (rloc, addr, IP6);
Florin Corasddfafb82016-05-13 18:09:56 +02001949 ip_prefix_len (ippref) = 128;
Andrej Kozemcak438109d2016-07-22 12:54:12 +02001950 ip_prefix_normalize (ippref);
Filip Tehlarbeceab92016-04-20 17:21:55 +02001951 vec_add1 (rlocs, gid[0]);
Filip Tehlar254b0362016-04-07 10:04:34 +02001952 }));
Florin Corasa2157cf2016-08-16 21:09:14 +02001953 /* *INDENT-ON* */
1954
Filip Tehlar254b0362016-04-07 10:04:34 +02001955 }
1956 return rlocs;
1957}
1958
Florin Corase127a7e2016-02-18 22:20:01 +01001959static vlib_buffer_t *
Filip Tehlar397fd7d2016-10-26 14:31:24 +02001960build_map_request (lisp_cp_main_t * lcm, gid_address_t * deid,
1961 ip_address_t * sloc, ip_address_t * rloc,
1962 gid_address_t * itr_rlocs, u64 * nonce_res, u32 * bi_res)
1963{
1964 vlib_buffer_t *b;
1965 u32 bi;
1966 vlib_main_t *vm = lcm->vlib_main;
1967
1968 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
1969 {
1970 clib_warning ("Can't allocate buffer for Map-Request!");
1971 return 0;
1972 }
1973
1974 b = vlib_get_buffer (vm, bi);
1975
1976 /* leave some space for the encap headers */
1977 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
1978
1979 /* put lisp msg */
1980 lisp_msg_put_mreq (lcm, b, NULL, deid, itr_rlocs, 0 /* smr invoked */ ,
1981 1 /* rloc probe */ , nonce_res);
1982
1983 /* push outer ip header */
1984 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
1985 rloc);
1986
1987 bi_res[0] = bi;
1988
1989 return b;
1990}
1991
1992static vlib_buffer_t *
Florin Corasa2157cf2016-08-16 21:09:14 +02001993build_encapsulated_map_request (lisp_cp_main_t * lcm,
1994 gid_address_t * seid, gid_address_t * deid,
1995 locator_set_t * loc_set, ip_address_t * mr_ip,
1996 ip_address_t * sloc, u8 is_smr_invoked,
1997 u64 * nonce_res, u32 * bi_res)
Florin Corase127a7e2016-02-18 22:20:01 +01001998{
Florin Corasa2157cf2016-08-16 21:09:14 +02001999 vlib_buffer_t *b;
Florin Corase127a7e2016-02-18 22:20:01 +01002000 u32 bi;
Florin Corasa2157cf2016-08-16 21:09:14 +02002001 gid_address_t *rlocs = 0;
2002 vlib_main_t *vm = lcm->vlib_main;
Florin Corase127a7e2016-02-18 22:20:01 +01002003
2004 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2005 {
2006 clib_warning ("Can't allocate buffer for Map-Request!");
2007 return 0;
2008 }
2009
2010 b = vlib_get_buffer (vm, bi);
2011
2012 /* leave some space for the encap headers */
2013 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2014
Filip Tehlar254b0362016-04-07 10:04:34 +02002015 /* get rlocs */
2016 rlocs = build_itr_rloc_list (lcm, loc_set);
2017
Filip Tehlard5fcc462016-10-17 16:20:18 +02002018 if (MR_MODE_SRC_DST == lcm->map_request_mode
2019 && GID_ADDR_SRC_DST != gid_address_type (deid))
Florin Corasdca88042016-09-14 16:01:38 +02002020 {
2021 gid_address_t sd;
2022 memset (&sd, 0, sizeof (sd));
2023 build_src_dst (&sd, seid, deid);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002024 lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked,
2025 0 /* rloc probe */ , nonce_res);
Florin Corasdca88042016-09-14 16:01:38 +02002026 }
2027 else
2028 {
2029 /* put lisp msg */
2030 lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002031 0 /* rloc probe */ , nonce_res);
Florin Corasdca88042016-09-14 16:01:38 +02002032 }
Florin Corase127a7e2016-02-18 22:20:01 +01002033
2034 /* push ecm: udp-ip-lisp */
2035 lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
2036
Florin Corase127a7e2016-02-18 22:20:01 +01002037 /* push outer ip header */
Florin Corasddfafb82016-05-13 18:09:56 +02002038 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
Florin Corasa2157cf2016-08-16 21:09:14 +02002039 mr_ip);
Florin Corase127a7e2016-02-18 22:20:01 +01002040
2041 bi_res[0] = bi;
Filip Tehlar254b0362016-04-07 10:04:34 +02002042
Florin Corasa2157cf2016-08-16 21:09:14 +02002043 vec_free (rlocs);
Florin Corase127a7e2016-02-18 22:20:01 +01002044 return b;
2045}
2046
2047static void
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002048reset_pending_mr_counters (pending_map_request_t * r)
Florin Corase127a7e2016-02-18 22:20:01 +01002049{
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002050 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
2051 r->retries_num = 0;
2052}
2053
2054static int
2055elect_map_resolver (lisp_cp_main_t * lcm)
2056{
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002057 lisp_msmr_t *mr;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002058
2059 vec_foreach (mr, lcm->map_resolvers)
Florin Corasa2157cf2016-08-16 21:09:14 +02002060 {
2061 if (!mr->is_down)
2062 {
2063 ip_address_copy (&lcm->active_map_resolver, &mr->address);
2064 lcm->do_map_resolver_election = 0;
2065 return 1;
2066 }
2067 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002068 return 0;
2069}
2070
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002071static void
2072free_map_register_records (mapping_t * maps)
2073{
2074 mapping_t *map;
2075 vec_foreach (map, maps) vec_free (map->locators);
2076
2077 vec_free (maps);
2078}
2079
2080static void
2081add_locators (lisp_cp_main_t * lcm, mapping_t * m, u32 locator_set_index,
2082 ip_address_t * probed_loc)
2083{
2084 u32 *li;
2085 locator_t *loc, new;
2086 ip_interface_address_t *ia = 0;
2087 void *addr;
2088 ip_address_t *new_ip = &gid_address_ip (&new.address);
2089
2090 m->locators = 0;
2091 locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
2092 locator_set_index);
2093 vec_foreach (li, ls->locator_indices)
2094 {
2095 loc = pool_elt_at_index (lcm->locator_pool, li[0]);
2096 new = loc[0];
2097 if (loc->local)
2098 {
2099 /* *INDENT-OFF* */
2100 foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
2101 loc->sw_if_index, 1 /* unnumbered */,
2102 ({
2103 addr = ip_interface_address_get_address (&lcm->im4->lookup_main,
2104 ia);
2105 ip_address_set (new_ip, addr, IP4);
2106 }));
2107
2108 /* Add ipv6 locators */
2109 foreach_ip_interface_address (&lcm->im6->lookup_main, ia,
2110 loc->sw_if_index, 1 /* unnumbered */,
2111 ({
2112 addr = ip_interface_address_get_address (&lcm->im6->lookup_main,
2113 ia);
2114 ip_address_set (new_ip, addr, IP6);
2115 }));
2116 /* *INDENT-ON* */
2117
2118 if (probed_loc && ip_address_cmp (probed_loc, new_ip) == 0)
2119 new.probed = 1;
2120 }
2121 vec_add1 (m->locators, new);
2122 }
2123}
2124
2125static mapping_t *
2126build_map_register_record_list (lisp_cp_main_t * lcm)
2127{
2128 mapping_t *recs = 0, rec, *m;
2129
2130 /* *INDENT-OFF* */
2131 pool_foreach(m, lcm->mapping_pool,
2132 {
2133 /* for now build only local mappings */
2134 if (!m->local)
2135 continue;
2136
2137 rec = m[0];
2138 add_locators (lcm, &rec, m->locator_set_index, NULL);
2139 vec_add1 (recs, rec);
2140 });
2141 /* *INDENT-ON* */
2142
2143 return recs;
2144}
2145
2146static int
2147update_map_register_auth_data (map_register_hdr_t * map_reg_hdr,
2148 lisp_key_type_t key_id, u8 * key,
2149 u16 auth_data_len, u32 msg_len)
2150{
2151 MREG_KEY_ID (map_reg_hdr) = clib_host_to_net_u16 (key_id);
2152 MREG_AUTH_DATA_LEN (map_reg_hdr) = clib_host_to_net_u16 (auth_data_len);
2153
2154 unsigned char *result = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
2155 (unsigned char *) map_reg_hdr, msg_len, NULL,
2156 NULL);
2157 clib_memcpy (MREG_DATA (map_reg_hdr), result, auth_data_len);
2158
2159 return 0;
2160}
2161
2162static vlib_buffer_t *
2163build_map_register (lisp_cp_main_t * lcm, ip_address_t * sloc,
2164 ip_address_t * ms_ip, u64 * nonce_res, u8 want_map_notif,
2165 mapping_t * records, lisp_key_type_t key_id, u8 * key,
2166 u32 * bi_res)
2167{
2168 void *map_reg_hdr;
2169 vlib_buffer_t *b;
2170 u32 bi, auth_data_len = 0, msg_len = 0;
2171 vlib_main_t *vm = lcm->vlib_main;
2172
2173 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
2174 {
2175 clib_warning ("Can't allocate buffer for Map-Register!");
2176 return 0;
2177 }
2178
2179 b = vlib_get_buffer (vm, bi);
2180
2181 /* leave some space for the encap headers */
2182 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
2183
2184 auth_data_len = auth_data_len_by_key_id (key_id);
2185 map_reg_hdr = lisp_msg_put_map_register (b, records, want_map_notif,
2186 auth_data_len, nonce_res,
2187 &msg_len);
2188
2189 update_map_register_auth_data (map_reg_hdr, key_id, key, auth_data_len,
2190 msg_len);
2191
2192 /* push outer ip header */
2193 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
2194 ms_ip);
2195
2196 bi_res[0] = bi;
2197 return b;
2198}
2199
2200static int
2201get_egress_map_resolver_ip (lisp_cp_main_t * lcm, ip_address_t * ip)
2202{
2203 lisp_msmr_t *mr;
2204 while (lcm->do_map_resolver_election
2205 | (0 == ip_fib_get_first_egress_ip_for_dst (lcm,
2206 &lcm->active_map_resolver,
2207 ip)))
2208 {
2209 if (0 == elect_map_resolver (lcm))
2210 /* all map resolvers are down */
2211 {
2212 /* restart MR checking by marking all of them up */
2213 vec_foreach (mr, lcm->map_resolvers) mr->is_down = 0;
2214 return -1;
2215 }
2216 }
2217 return 0;
2218}
2219
Filip Tehlarcda70662017-01-16 10:30:03 +01002220/* CP output statistics */
2221#define foreach_lisp_cp_output_error \
2222_(MAP_REGISTERS_SENT, "map-registers sent") \
2223_(RLOC_PROBES_SENT, "rloc-probes sent")
2224
2225static char *lisp_cp_output_error_strings[] = {
2226#define _(sym,string) string,
2227 foreach_lisp_cp_output_error
2228#undef _
2229};
2230
2231typedef enum
2232{
2233#define _(sym,str) LISP_CP_OUTPUT_ERROR_##sym,
2234 foreach_lisp_cp_output_error
2235#undef _
2236 LISP_CP_OUTPUT_N_ERROR,
2237} lisp_cp_output_error_t;
2238
2239static uword
2240lisp_cp_output (vlib_main_t * vm, vlib_node_runtime_t * node,
2241 vlib_frame_t * from_frame)
2242{
2243 return 0;
2244}
2245
2246/* dummy node used only for statistics */
2247/* *INDENT-OFF* */
2248VLIB_REGISTER_NODE (lisp_cp_output_node) = {
2249 .function = lisp_cp_output,
2250 .name = "lisp-cp-output",
2251 .vector_size = sizeof (u32),
2252 .format_trace = format_lisp_cp_input_trace,
2253 .type = VLIB_NODE_TYPE_INTERNAL,
2254
2255 .n_errors = LISP_CP_OUTPUT_N_ERROR,
2256 .error_strings = lisp_cp_output_error_strings,
2257
2258 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
2259
2260 .next_nodes = {
2261 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
2262 },
2263};
2264/* *INDENT-ON* */
2265
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002266static int
2267send_rloc_probe (lisp_cp_main_t * lcm, gid_address_t * deid,
2268 u32 local_locator_set_index, ip_address_t * sloc,
2269 ip_address_t * rloc)
2270{
2271 locator_set_t *ls;
2272 u32 bi;
2273 vlib_buffer_t *b;
2274 vlib_frame_t *f;
2275 u64 nonce = 0;
2276 u32 next_index, *to_next;
2277 gid_address_t *itr_rlocs;
2278
2279 ls = pool_elt_at_index (lcm->locator_set_pool, local_locator_set_index);
2280 itr_rlocs = build_itr_rloc_list (lcm, ls);
2281
2282 b = build_map_request (lcm, deid, sloc, rloc, itr_rlocs, &nonce, &bi);
2283 vec_free (itr_rlocs);
2284 if (!b)
2285 return -1;
2286
2287 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2288
2289 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2290 ip4_lookup_node.index : ip6_lookup_node.index;
2291
2292 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2293
2294 /* Enqueue the packet */
2295 to_next = vlib_frame_vector_args (f);
2296 to_next[0] = bi;
2297 f->n_vectors = 1;
2298 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
2299
2300 hash_set (lcm->map_register_messages_by_nonce, nonce, 0);
2301 return 0;
2302}
2303
2304static int
2305send_rloc_probes (lisp_cp_main_t * lcm)
2306{
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002307 u8 lprio = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002308 mapping_t *lm;
2309 fwd_entry_t *e;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002310 locator_pair_t *lp;
Filip Tehlarcda70662017-01-16 10:30:03 +01002311 u32 si, rloc_probes_sent = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002312
2313 /* *INDENT-OFF* */
2314 pool_foreach (e, lcm->fwd_entry_pool,
2315 {
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002316 if (vec_len (e->locator_pairs) == 0)
2317 continue;
2318
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002319 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &e->leid);
2320 if (~0 == si)
2321 {
2322 clib_warning ("internal error: cannot find local eid %U in "
2323 "map-cache!", format_gid_address, &e->leid);
2324 continue;
2325 }
2326 lm = pool_elt_at_index (lcm->mapping_pool, si);
2327
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002328 /* get the best (lowest) priority */
2329 lprio = e->locator_pairs[0].priority;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002330
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002331 /* send rloc-probe for pair(s) with the best remote locator priority */
2332 vec_foreach (lp, e->locator_pairs)
2333 {
2334 if (lp->priority != lprio)
2335 break;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002336
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002337 /* get first remote locator */
2338 send_rloc_probe (lcm, &e->reid, lm->locator_set_index, &lp->lcl_loc,
2339 &lp->rmt_loc);
Filip Tehlarcda70662017-01-16 10:30:03 +01002340 rloc_probes_sent++;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002341 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002342 });
2343 /* *INDENT-ON* */
2344
Filip Tehlarcda70662017-01-16 10:30:03 +01002345 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2346 LISP_CP_OUTPUT_ERROR_RLOC_PROBES_SENT,
2347 rloc_probes_sent);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002348 return 0;
2349}
2350
2351static int
2352send_map_register (lisp_cp_main_t * lcm, u8 want_map_notif)
2353{
Filip Tehlarcda70662017-01-16 10:30:03 +01002354 u32 bi, map_registers_sent = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002355 vlib_buffer_t *b;
2356 ip_address_t sloc;
2357 vlib_frame_t *f;
2358 u64 nonce = 0;
2359 u32 next_index, *to_next;
2360 ip_address_t *ms = 0;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002361 mapping_t *records, *r, *g;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002362
2363 // TODO: support multiple map servers and do election
2364 if (0 == vec_len (lcm->map_servers))
2365 return -1;
2366
2367 ms = &lcm->map_servers[0].address;
2368
2369 if (0 == ip_fib_get_first_egress_ip_for_dst (lcm, ms, &sloc))
2370 {
2371 clib_warning ("no eligible interface address found for %U!",
2372 format_ip_address, &lcm->map_servers[0]);
2373 return -1;
2374 }
2375
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002376 records = build_map_register_record_list (lcm);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002377 if (!records)
2378 return -1;
2379
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002380 vec_foreach (r, records)
2381 {
2382 u8 *key = r->key;
2383 u8 key_id = r->key_id;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002384
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002385 if (!key)
2386 continue; /* no secret key -> map-register cannot be sent */
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002387
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002388 g = 0;
2389 // TODO: group mappings that share common key
2390 vec_add1 (g, r[0]);
2391 b = build_map_register (lcm, &sloc, ms, &nonce, want_map_notif, g,
2392 key_id, key, &bi);
2393 vec_free (g);
2394 if (!b)
2395 continue;
2396
2397 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2398
2399 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2400 ip4_lookup_node.index : ip6_lookup_node.index;
2401
2402 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
2403
2404 /* Enqueue the packet */
2405 to_next = vlib_frame_vector_args (f);
2406 to_next[0] = bi;
2407 f->n_vectors = 1;
2408 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
Filip Tehlarcda70662017-01-16 10:30:03 +01002409 map_registers_sent++;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002410
2411 hash_set (lcm->map_register_messages_by_nonce, nonce, 0);
2412 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002413 free_map_register_records (records);
2414
Filip Tehlarcda70662017-01-16 10:30:03 +01002415 vlib_node_increment_counter (vlib_get_main (), lisp_cp_output_node.index,
2416 LISP_CP_OUTPUT_ERROR_MAP_REGISTERS_SENT,
2417 map_registers_sent);
2418
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002419 return 0;
2420}
2421
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002422#define send_encapsulated_map_request(lcm, seid, deid, smr) \
2423 _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
2424
2425#define resend_encapsulated_map_request(lcm, seid, deid, smr) \
2426 _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
2427
2428static int
Florin Corasa2157cf2016-08-16 21:09:14 +02002429_send_encapsulated_map_request (lisp_cp_main_t * lcm,
2430 gid_address_t * seid, gid_address_t * deid,
2431 u8 is_smr_invoked, u8 is_resend)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002432{
Florin Corasa2157cf2016-08-16 21:09:14 +02002433 u32 next_index, bi = 0, *to_next, map_index;
2434 vlib_buffer_t *b;
2435 vlib_frame_t *f;
Florin Corase127a7e2016-02-18 22:20:01 +01002436 u64 nonce = 0;
Florin Corasa2157cf2016-08-16 21:09:14 +02002437 locator_set_t *loc_set;
2438 mapping_t *map;
2439 pending_map_request_t *pmr, *duplicate_pmr = 0;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002440 ip_address_t sloc;
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002441 u32 ls_index;
Florin Corase127a7e2016-02-18 22:20:01 +01002442
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002443 /* if there is already a pending request remember it */
Florin Corasa2157cf2016-08-16 21:09:14 +02002444
2445 /* *INDENT-OFF* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002446 pool_foreach(pmr, lcm->pending_map_requests_pool,
2447 ({
2448 if (!gid_address_cmp (&pmr->src, seid)
2449 && !gid_address_cmp (&pmr->dst, deid))
2450 {
2451 duplicate_pmr = pmr;
2452 break;
2453 }
2454 }));
Florin Corasa2157cf2016-08-16 21:09:14 +02002455 /* *INDENT-ON* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002456
2457 if (!is_resend && duplicate_pmr)
2458 {
2459 /* don't send the request if there is a pending map request already */
2460 return 0;
2461 }
2462
Florin Corase127a7e2016-02-18 22:20:01 +01002463 /* get locator-set for seid */
Filip Tehlar53f09e32016-05-19 14:25:44 +02002464 if (!lcm->lisp_pitr)
Florin Corase127a7e2016-02-18 22:20:01 +01002465 {
Filip Tehlar53f09e32016-05-19 14:25:44 +02002466 map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
2467 if (map_index == ~0)
Florin Corasa2157cf2016-08-16 21:09:14 +02002468 {
2469 clib_warning ("No local mapping found in eid-table for %U!",
2470 format_gid_address, seid);
2471 return -1;
2472 }
Filip Tehlar53f09e32016-05-19 14:25:44 +02002473
2474 map = pool_elt_at_index (lcm->mapping_pool, map_index);
2475
2476 if (!map->local)
Florin Corasa2157cf2016-08-16 21:09:14 +02002477 {
2478 clib_warning
2479 ("Mapping found for src eid %U is not marked as local!",
2480 format_gid_address, seid);
2481 return -1;
2482 }
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002483 ls_index = map->locator_set_index;
Filip Tehlar53f09e32016-05-19 14:25:44 +02002484 }
2485 else
2486 {
2487 map_index = lcm->pitr_map_index;
2488 map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002489 ls_index = map->locator_set_index;
Florin Corase127a7e2016-02-18 22:20:01 +01002490 }
2491
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02002492 /* overwrite locator set if map-request itr-rlocs configured */
2493 if (~0 != lcm->mreq_itr_rlocs)
2494 {
2495 ls_index = lcm->mreq_itr_rlocs;
2496 }
2497
2498 loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
Florin Corase127a7e2016-02-18 22:20:01 +01002499
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002500 if (get_egress_map_resolver_ip (lcm, &sloc) < 0)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002501 {
Filip Tehlar397fd7d2016-10-26 14:31:24 +02002502 if (duplicate_pmr)
2503 duplicate_pmr->to_be_removed = 1;
2504 return -1;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002505 }
Florin Corasddfafb82016-05-13 18:09:56 +02002506
Florin Corase127a7e2016-02-18 22:20:01 +01002507 /* build the encapsulated map request */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002508 b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
Florin Corasa2157cf2016-08-16 21:09:14 +02002509 &lcm->active_map_resolver,
2510 &sloc, is_smr_invoked, &nonce, &bi);
Florin Corase127a7e2016-02-18 22:20:01 +01002511
2512 if (!b)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002513 return -1;
Florin Corase127a7e2016-02-18 22:20:01 +01002514
Florin Corasf727db92016-06-23 15:01:58 +02002515 /* set fib index to default and lookup node */
Florin Corasa2157cf2016-08-16 21:09:14 +02002516 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
2517 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
2518 ip4_lookup_node.index : ip6_lookup_node.index;
Florin Corase127a7e2016-02-18 22:20:01 +01002519
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002520 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
Florin Corase127a7e2016-02-18 22:20:01 +01002521
2522 /* Enqueue the packet */
2523 to_next = vlib_frame_vector_args (f);
2524 to_next[0] = bi;
2525 f->n_vectors = 1;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002526 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
Florin Corase127a7e2016-02-18 22:20:01 +01002527
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002528 if (duplicate_pmr)
2529 /* if there is a pending request already update it */
2530 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002531 if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
2532 {
2533 /* remove the oldest nonce */
2534 u64 CLIB_UNUSED (tmp), *nonce_del;
2535 nonce_del = clib_fifo_head (duplicate_pmr->nonces);
2536 hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
2537 clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
2538 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002539
Florin Corasf4691cd2016-08-15 19:16:32 +02002540 clib_fifo_add1 (duplicate_pmr->nonces, nonce);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002541 hash_set (lcm->pending_map_requests_by_nonce, nonce,
Florin Corasa2157cf2016-08-16 21:09:14 +02002542 duplicate_pmr - lcm->pending_map_requests_pool);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002543 }
2544 else
2545 {
2546 /* add map-request to pending requests table */
Florin Corasa2157cf2016-08-16 21:09:14 +02002547 pool_get (lcm->pending_map_requests_pool, pmr);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002548 memset (pmr, 0, sizeof (*pmr));
2549 gid_address_copy (&pmr->src, seid);
2550 gid_address_copy (&pmr->dst, deid);
Florin Corasf4691cd2016-08-15 19:16:32 +02002551 clib_fifo_add1 (pmr->nonces, nonce);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002552 pmr->is_smr_invoked = is_smr_invoked;
2553 reset_pending_mr_counters (pmr);
2554 hash_set (lcm->pending_map_requests_by_nonce, nonce,
Florin Corasa2157cf2016-08-16 21:09:14 +02002555 pmr - lcm->pending_map_requests_pool);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002556 }
2557
2558 return 0;
Florin Corase127a7e2016-02-18 22:20:01 +01002559}
2560
2561static void
Florin Corasa2157cf2016-08-16 21:09:14 +02002562get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
Florin Corase127a7e2016-02-18 22:20:01 +01002563{
Florin Corasa2157cf2016-08-16 21:09:14 +02002564 ip4_header_t *ip4 = hdr;
2565 ip6_header_t *ip6;
Florin Corase127a7e2016-02-18 22:20:01 +01002566
2567 if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
2568 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002569 ip_address_set (src, &ip4->src_address, IP4);
2570 ip_address_set (dst, &ip4->dst_address, IP4);
Florin Corase127a7e2016-02-18 22:20:01 +01002571 }
2572 else
2573 {
2574 ip6 = hdr;
Florin Corasa2157cf2016-08-16 21:09:14 +02002575 ip_address_set (src, &ip6->src_address, IP6);
2576 ip_address_set (dst, &ip6->dst_address, IP6);
Florin Corase127a7e2016-02-18 22:20:01 +01002577 }
2578}
2579
Filip Tehlar324112f2016-06-02 16:07:38 +02002580static u32
Florin Coras1a1adc72016-07-22 01:45:30 +02002581lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
Florin Corasa2157cf2016-08-16 21:09:14 +02002582 u8 version)
Filip Tehlar324112f2016-06-02 16:07:38 +02002583{
Florin Corasa2157cf2016-08-16 21:09:14 +02002584 uword *vnip;
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002585 u32 vni = ~0, table_id = ~0;
Filip Tehlar324112f2016-06-02 16:07:38 +02002586
Florin Coras87e40692016-09-22 18:02:17 +02002587 table_id = fib_table_get_table_id_for_sw_if_index ((version ==
2588 IP4 ? FIB_PROTOCOL_IP4 :
2589 FIB_PROTOCOL_IP6),
2590 vnet_buffer
2591 (b)->sw_if_index
2592 [VLIB_RX]);
Filip Tehlar324112f2016-06-02 16:07:38 +02002593
2594 vnip = hash_get (lcm->vni_by_table_id, table_id);
2595 if (vnip)
2596 vni = vnip[0];
2597 else
2598 clib_warning ("vrf %d is not mapped to any vni!", table_id);
2599
2600 return vni;
2601}
2602
Florin Coras1a1adc72016-07-22 01:45:30 +02002603always_inline u32
2604lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
2605{
Florin Corasa2157cf2016-08-16 21:09:14 +02002606 uword *vnip;
Florin Coras1a1adc72016-07-22 01:45:30 +02002607 u32 vni = ~0;
2608 u32 sw_if_index0;
2609
Florin Corasa2157cf2016-08-16 21:09:14 +02002610 l2input_main_t *l2im = &l2input_main;
2611 l2_input_config_t *config;
2612 l2_bridge_domain_t *bd_config;
Florin Coras1a1adc72016-07-22 01:45:30 +02002613
Florin Corasa2157cf2016-08-16 21:09:14 +02002614 sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
2615 config = vec_elt_at_index (l2im->configs, sw_if_index0);
Florin Coras1a1adc72016-07-22 01:45:30 +02002616 bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
2617
2618 vnip = hash_get (lcm->vni_by_bd_id, bd_config->bd_id);
2619 if (vnip)
2620 vni = vnip[0];
2621 else
Florin Corasa2157cf2016-08-16 21:09:14 +02002622 clib_warning ("bridge domain %d is not mapped to any vni!",
2623 config->bd_index);
Florin Coras1a1adc72016-07-22 01:45:30 +02002624
2625 return vni;
2626}
2627
2628always_inline void
Florin Corasa2157cf2016-08-16 21:09:14 +02002629get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
2630 gid_address_t * src, gid_address_t * dst)
Florin Coras1a1adc72016-07-22 01:45:30 +02002631{
2632 u32 vni = 0;
2633 u16 type;
2634
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002635 memset (src, 0, sizeof (*src));
2636 memset (dst, 0, sizeof (*dst));
Florin Corasa2157cf2016-08-16 21:09:14 +02002637 type = vnet_buffer (b)->lisp.overlay_afi;
Florin Coras1a1adc72016-07-22 01:45:30 +02002638
2639 if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
2640 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002641 ip4_header_t *ip;
Florin Coras1a1adc72016-07-22 01:45:30 +02002642 u8 version, preflen;
2643
Florin Corasa2157cf2016-08-16 21:09:14 +02002644 gid_address_type (src) = GID_ADDR_IP_PREFIX;
2645 gid_address_type (dst) = GID_ADDR_IP_PREFIX;
Florin Coras1a1adc72016-07-22 01:45:30 +02002646
2647 ip = vlib_buffer_get_current (b);
Florin Corasa2157cf2016-08-16 21:09:14 +02002648 get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
Florin Coras1a1adc72016-07-22 01:45:30 +02002649
Florin Corasa2157cf2016-08-16 21:09:14 +02002650 version = gid_address_ip_version (src);
Florin Coras1a1adc72016-07-22 01:45:30 +02002651 preflen = ip_address_max_len (version);
Florin Corasa2157cf2016-08-16 21:09:14 +02002652 gid_address_ippref_len (src) = preflen;
2653 gid_address_ippref_len (dst) = preflen;
Florin Coras1a1adc72016-07-22 01:45:30 +02002654
2655 vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
2656 gid_address_vni (dst) = vni;
2657 gid_address_vni (src) = vni;
2658 }
2659 else if (LISP_AFI_MAC == type)
2660 {
Florin Corasa2157cf2016-08-16 21:09:14 +02002661 ethernet_header_t *eh;
Florin Coras1a1adc72016-07-22 01:45:30 +02002662
2663 eh = vlib_buffer_get_current (b);
2664
Florin Corasa2157cf2016-08-16 21:09:14 +02002665 gid_address_type (src) = GID_ADDR_MAC;
2666 gid_address_type (dst) = GID_ADDR_MAC;
2667 mac_copy (&gid_address_mac (src), eh->src_address);
2668 mac_copy (&gid_address_mac (dst), eh->dst_address);
Florin Coras1a1adc72016-07-22 01:45:30 +02002669
2670 /* get vni */
2671 vni = lisp_get_vni_from_buffer_eth (lcm, b);
2672
2673 gid_address_vni (dst) = vni;
2674 gid_address_vni (src) = vni;
2675 }
2676}
2677
Florin Corase127a7e2016-02-18 22:20:01 +01002678static uword
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002679lisp_cp_lookup_inline (vlib_main_t * vm,
2680 vlib_node_runtime_t * node,
2681 vlib_frame_t * from_frame, int overlay)
Florin Corase127a7e2016-02-18 22:20:01 +01002682{
Florin Corasa2157cf2016-08-16 21:09:14 +02002683 u32 *from, *to_next_drop, di, si;
2684 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Florin Corase127a7e2016-02-18 22:20:01 +01002685 u32 pkts_mapped = 0;
2686 uword n_left_from, n_left_to_next_drop;
2687
2688 from = vlib_frame_vector_args (from_frame);
2689 n_left_from = from_frame->n_vectors;
2690
2691 while (n_left_from > 0)
2692 {
2693 vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
Florin Corasa2157cf2016-08-16 21:09:14 +02002694 to_next_drop, n_left_to_next_drop);
Florin Corase127a7e2016-02-18 22:20:01 +01002695
2696 while (n_left_from > 0 && n_left_to_next_drop > 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02002697 {
2698 u32 pi0;
2699 vlib_buffer_t *b0;
2700 gid_address_t src, dst;
Florin Corase127a7e2016-02-18 22:20:01 +01002701
Florin Corasa2157cf2016-08-16 21:09:14 +02002702 pi0 = from[0];
2703 from += 1;
2704 n_left_from -= 1;
2705 to_next_drop[0] = pi0;
2706 to_next_drop += 1;
2707 n_left_to_next_drop -= 1;
Florin Corase127a7e2016-02-18 22:20:01 +01002708
Florin Corasa2157cf2016-08-16 21:09:14 +02002709 b0 = vlib_get_buffer (vm, pi0);
2710 b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002711 vnet_buffer (b0)->lisp.overlay_afi = overlay;
Florin Corase127a7e2016-02-18 22:20:01 +01002712
Florin Corasa2157cf2016-08-16 21:09:14 +02002713 /* src/dst eid pair */
2714 get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst);
Filip Tehlar324112f2016-06-02 16:07:38 +02002715
Florin Corasa2157cf2016-08-16 21:09:14 +02002716 /* if we have remote mapping for destination already in map-chache
2717 add forwarding tunnel directly. If not send a map-request */
Florin Corasdca88042016-09-14 16:01:38 +02002718 di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
2719 &src);
Florin Corasa2157cf2016-08-16 21:09:14 +02002720 if (~0 != di)
2721 {
2722 mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
2723 /* send a map-request also in case of negative mapping entry
2724 with corresponding action */
2725 if (m->action == LISP_SEND_MAP_REQUEST)
2726 {
2727 /* send map-request */
2728 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
2729 0 /* is_resend */ );
2730 pkts_mapped++;
2731 }
2732 else
2733 {
2734 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
2735 &src);
2736 if (~0 != si)
2737 {
Filip Tehlarce1aae42017-01-04 10:42:25 +01002738 dp_add_fwd_entry_from_mt (si, di);
Florin Corasa2157cf2016-08-16 21:09:14 +02002739 }
2740 }
2741 }
2742 else
2743 {
2744 /* send map-request */
2745 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
2746 0 /* is_resend */ );
2747 pkts_mapped++;
2748 }
Florin Corase127a7e2016-02-18 22:20:01 +01002749
Florin Corasa2157cf2016-08-16 21:09:14 +02002750 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
2751 {
2752 lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
2753 sizeof (*tr));
Andrej Kozemcak94e34762016-05-25 12:43:21 +02002754
Florin Corasa2157cf2016-08-16 21:09:14 +02002755 memset (tr, 0, sizeof (*tr));
2756 gid_address_copy (&tr->dst_eid, &dst);
Florin Coras5a1c11b2016-09-06 16:29:34 +02002757 ip_address_copy (&tr->map_resolver_ip,
2758 &lcm->active_map_resolver);
Florin Corasa2157cf2016-08-16 21:09:14 +02002759 }
2760 gid_address_free (&dst);
2761 gid_address_free (&src);
2762 }
Florin Corase127a7e2016-02-18 22:20:01 +01002763
Florin Corasa2157cf2016-08-16 21:09:14 +02002764 vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
2765 n_left_to_next_drop);
Florin Corase127a7e2016-02-18 22:20:01 +01002766 }
2767 vlib_node_increment_counter (vm, node->node_index,
Florin Corasa2157cf2016-08-16 21:09:14 +02002768 LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
2769 pkts_mapped);
Florin Corase127a7e2016-02-18 22:20:01 +01002770 return from_frame->n_vectors;
2771}
2772
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002773static uword
2774lisp_cp_lookup_ip4 (vlib_main_t * vm,
2775 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2776{
2777 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
2778}
2779
2780static uword
2781lisp_cp_lookup_ip6 (vlib_main_t * vm,
2782 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2783{
2784 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
2785}
2786
Neale Ranns5e575b12016-10-03 09:40:25 +01002787static uword
2788lisp_cp_lookup_l2 (vlib_main_t * vm,
2789 vlib_node_runtime_t * node, vlib_frame_t * from_frame)
2790{
2791 return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
2792}
2793
Florin Corasa2157cf2016-08-16 21:09:14 +02002794/* *INDENT-OFF* */
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002795VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
2796 .function = lisp_cp_lookup_ip4,
2797 .name = "lisp-cp-lookup-ip4",
2798 .vector_size = sizeof (u32),
2799 .format_trace = format_lisp_cp_lookup_trace,
2800 .type = VLIB_NODE_TYPE_INTERNAL,
2801
2802 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2803 .error_strings = lisp_cp_lookup_error_strings,
2804
2805 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2806
2807 .next_nodes = {
2808 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
Neale Ranns0bfe5d82016-08-25 15:29:12 +01002809 },
2810};
2811/* *INDENT-ON* */
2812
2813/* *INDENT-OFF* */
2814VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
2815 .function = lisp_cp_lookup_ip6,
2816 .name = "lisp-cp-lookup-ip6",
Florin Corase127a7e2016-02-18 22:20:01 +01002817 .vector_size = sizeof (u32),
2818 .format_trace = format_lisp_cp_lookup_trace,
2819 .type = VLIB_NODE_TYPE_INTERNAL,
2820
2821 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2822 .error_strings = lisp_cp_lookup_error_strings,
2823
2824 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2825
2826 .next_nodes = {
2827 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
Neale Ranns5e575b12016-10-03 09:40:25 +01002828 },
2829};
2830/* *INDENT-ON* */
2831
2832/* *INDENT-OFF* */
2833VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
2834 .function = lisp_cp_lookup_l2,
2835 .name = "lisp-cp-lookup-l2",
2836 .vector_size = sizeof (u32),
2837 .format_trace = format_lisp_cp_lookup_trace,
2838 .type = VLIB_NODE_TYPE_INTERNAL,
2839
2840 .n_errors = LISP_CP_LOOKUP_N_ERROR,
2841 .error_strings = lisp_cp_lookup_error_strings,
2842
2843 .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
2844
2845 .next_nodes = {
2846 [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
Florin Corase127a7e2016-02-18 22:20:01 +01002847 },
2848};
Florin Corasa2157cf2016-08-16 21:09:14 +02002849/* *INDENT-ON* */
Florin Corase127a7e2016-02-18 22:20:01 +01002850
2851/* lisp_cp_input statistics */
Filip Tehlarcda70662017-01-16 10:30:03 +01002852#define foreach_lisp_cp_input_error \
2853_(DROP, "drop") \
2854_(RLOC_PROBE_REQ_RECEIVED, "rloc-probe requests received") \
2855_(RLOC_PROBE_REP_RECEIVED, "rloc-probe replies received") \
2856_(MAP_NOTIFIES_RECEIVED, "map-notifies received") \
Florin Corase127a7e2016-02-18 22:20:01 +01002857_(MAP_REPLIES_RECEIVED, "map-replies received")
2858
Florin Corasa2157cf2016-08-16 21:09:14 +02002859static char *lisp_cp_input_error_strings[] = {
Florin Corase127a7e2016-02-18 22:20:01 +01002860#define _(sym,string) string,
2861 foreach_lisp_cp_input_error
2862#undef _
2863};
2864
2865typedef enum
2866{
2867#define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
Florin Corasa2157cf2016-08-16 21:09:14 +02002868 foreach_lisp_cp_input_error
Florin Corase127a7e2016-02-18 22:20:01 +01002869#undef _
2870 LISP_CP_INPUT_N_ERROR,
2871} lisp_cp_input_error_t;
2872
Florin Corase127a7e2016-02-18 22:20:01 +01002873typedef struct
2874{
2875 gid_address_t dst_eid;
2876 ip4_address_t map_resolver_ip;
2877} lisp_cp_input_trace_t;
2878
2879u8 *
2880format_lisp_cp_input_trace (u8 * s, va_list * args)
2881{
2882 CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
2883 CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
Florin Corasa2157cf2016-08-16 21:09:14 +02002884 CLIB_UNUSED (lisp_cp_input_trace_t * t) =
2885 va_arg (*args, lisp_cp_input_trace_t *);
Florin Corase127a7e2016-02-18 22:20:01 +01002886
2887 s = format (s, "LISP-CP-INPUT: TODO");
2888 return s;
2889}
2890
Filip Tehlar9677a942016-11-28 10:23:31 +01002891static void
2892remove_expired_mapping (lisp_cp_main_t * lcm, u32 mi)
2893{
2894 mapping_t *m;
Florin Corasf3dc11a2017-01-24 03:13:43 -08002895 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
2896 memset (adj_args, 0, sizeof (adj_args[0]));
Filip Tehlar9677a942016-11-28 10:23:31 +01002897
2898 m = pool_elt_at_index (lcm->mapping_pool, mi);
Florin Corasf3dc11a2017-01-24 03:13:43 -08002899
2900 gid_address_copy (&adj_args->reid, &m->eid);
2901 adj_args->is_add = 0;
2902 if (vnet_lisp_add_del_adjacency (adj_args))
2903 clib_warning ("failed to del adjacency!");
2904
Filip Tehlar9677a942016-11-28 10:23:31 +01002905 vnet_lisp_add_del_mapping (&m->eid, 0, 0, 0, ~0, 0 /* is_add */ ,
2906 0 /* is_static */ , 0);
2907 mapping_delete_timer (lcm, mi);
2908}
2909
2910static void
2911mapping_start_expiration_timer (lisp_cp_main_t * lcm, u32 mi,
2912 f64 expiration_time)
2913{
2914 mapping_t *m;
2915 u64 now = clib_cpu_time_now ();
2916 u64 cpu_cps = lcm->vlib_main->clib_time.clocks_per_second;
2917 u64 exp_clock_time = now + expiration_time * cpu_cps;
2918
2919 m = pool_elt_at_index (lcm->mapping_pool, mi);
2920
2921 m->timer_set = 1;
2922 timing_wheel_insert (&lcm->wheel, exp_clock_time, mi);
2923}
2924
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002925static void
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002926map_records_arg_free (map_records_arg_t * a)
Florin Corase127a7e2016-02-18 22:20:01 +01002927{
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002928 mapping_t *m;
2929 vec_foreach (m, a->mappings)
2930 {
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002931 vec_free (m->locators);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002932 gid_address_free (&m->eid);
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002933 }
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002934
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002935 clib_mem_free (a);
2936}
2937
2938void *
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002939process_map_reply (map_records_arg_t * a)
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002940{
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002941 mapping_t *m;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002942 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
2943 u32 dst_map_index = 0;
2944 pending_map_request_t *pmr;
2945 u64 *noncep;
2946 uword *pmr_index;
2947
2948 if (a->is_rloc_probe)
2949 goto done;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002950
Florin Corase127a7e2016-02-18 22:20:01 +01002951 /* Check pending requests table and nonce */
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002952 pmr_index = hash_get (lcm->pending_map_requests_by_nonce, a->nonce);
Florin Corase127a7e2016-02-18 22:20:01 +01002953 if (!pmr_index)
2954 {
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002955 clib_warning ("No pending map-request entry with nonce %lu!", a->nonce);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002956 goto done;
Florin Corase127a7e2016-02-18 22:20:01 +01002957 }
Florin Corasa2157cf2016-08-16 21:09:14 +02002958 pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
Florin Corase127a7e2016-02-18 22:20:01 +01002959
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002960 vec_foreach (m, a->mappings)
2961 {
2962 /* insert/update mappings cache */
2963 vnet_lisp_add_del_mapping (&m->eid, m->locators, m->action,
2964 m->authoritative, m->ttl,
2965 1, 0 /* is_static */ , &dst_map_index);
Florin Corase127a7e2016-02-18 22:20:01 +01002966
Florin Corasba888e42017-01-24 11:38:18 -08002967 if (dst_map_index == (u32) ~ 0)
2968 continue;
2969
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002970 /* try to program forwarding only if mapping saved or updated */
Florin Corasba888e42017-01-24 11:38:18 -08002971 vnet_lisp_add_del_adjacency_args_t _adj_args, *adj_args = &_adj_args;
2972 memset (adj_args, 0, sizeof (adj_args[0]));
Florin Corasf3dc11a2017-01-24 03:13:43 -08002973
Florin Corasba888e42017-01-24 11:38:18 -08002974 gid_address_copy (&adj_args->leid, &pmr->src);
2975 gid_address_copy (&adj_args->reid, &m->eid);
2976 adj_args->is_add = 1;
2977 if (vnet_lisp_add_del_adjacency (adj_args))
2978 clib_warning ("failed to add adjacency!");
Florin Corasf3dc11a2017-01-24 03:13:43 -08002979
Florin Corasba888e42017-01-24 11:38:18 -08002980 if ((u32) ~ 0 != m->ttl)
2981 mapping_start_expiration_timer (lcm, dst_map_index, m->ttl * 60);
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01002982 }
Florin Corase127a7e2016-02-18 22:20:01 +01002983
2984 /* remove pending map request entry */
Florin Corasa2157cf2016-08-16 21:09:14 +02002985
2986 /* *INDENT-OFF* */
Florin Corasf4691cd2016-08-15 19:16:32 +02002987 clib_fifo_foreach (noncep, pmr->nonces, ({
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002988 hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
Florin Corasf4691cd2016-08-15 19:16:32 +02002989 }));
Florin Corasa2157cf2016-08-16 21:09:14 +02002990 /* *INDENT-ON* */
2991
2992 clib_fifo_free (pmr->nonces);
2993 pool_put (lcm->pending_map_requests_pool, pmr);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002994
2995done:
Filip Tehlarfb9931f2016-12-09 13:52:38 +01002996 map_records_arg_free (a);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02002997 return 0;
Florin Corase127a7e2016-02-18 22:20:01 +01002998}
2999
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003000static int
3001is_auth_data_valid (map_notify_hdr_t * h, u32 msg_len,
3002 lisp_key_type_t key_id, u8 * key)
3003{
3004 u8 *auth_data = 0;
3005 u16 auth_data_len;
3006 int result;
3007
3008 auth_data_len = auth_data_len_by_key_id (key_id);
3009 if ((u16) ~ 0 == auth_data_len)
3010 {
3011 clib_warning ("invalid length for key_id %d!", key_id);
3012 return 0;
3013 }
3014
3015 /* save auth data */
3016 vec_validate (auth_data, auth_data_len - 1);
3017 clib_memcpy (auth_data, MNOTIFY_DATA (h), auth_data_len);
3018
3019 /* clear auth data */
3020 memset (MNOTIFY_DATA (h), 0, auth_data_len);
3021
3022 /* get hash of the message */
3023 unsigned char *code = HMAC (get_encrypt_fcn (key_id), key, vec_len (key),
3024 (unsigned char *) h, msg_len, NULL, NULL);
3025
3026 result = memcmp (code, auth_data, auth_data_len);
3027
3028 vec_free (auth_data);
3029
3030 return !result;
3031}
3032
3033static void
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003034process_map_notify (map_records_arg_t * a)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003035{
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003036 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003037 uword *pmr_index;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003038
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003039 pmr_index = hash_get (lcm->map_register_messages_by_nonce, a->nonce);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003040 if (!pmr_index)
3041 {
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003042 clib_warning ("No pending map-register entry with nonce %lu!",
3043 a->nonce);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003044 return;
3045 }
3046
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003047 map_records_arg_free (a);
3048 hash_unset (lcm->map_register_messages_by_nonce, a->nonce);
3049}
3050
3051static mapping_t *
3052get_mapping (lisp_cp_main_t * lcm, gid_address_t * e)
3053{
3054 u32 mi;
3055
3056 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, e);
3057 if (~0 == mi)
3058 {
3059 clib_warning ("eid %U not found in map-cache!", unformat_gid_address,
3060 e);
3061 return 0;
3062 }
3063 return pool_elt_at_index (lcm->mapping_pool, mi);
3064}
3065
3066/**
3067 * When map-notify is received it is necessary that all EIDs in the record
3068 * list share common key. The key is then used to verify authentication
3069 * data in map-notify message.
3070 */
3071static int
3072map_record_integrity_check (lisp_cp_main_t * lcm, mapping_t * maps,
3073 u32 key_id, u8 ** key_out)
3074{
3075 u32 i, len = vec_len (maps);
3076 mapping_t *m;
3077
3078 /* get key of the first mapping */
3079 m = get_mapping (lcm, &maps[0].eid);
3080 if (!m || !m->key)
3081 return -1;
3082
3083 key_out[0] = m->key;
3084
3085 for (i = 1; i < len; i++)
3086 {
3087 m = get_mapping (lcm, &maps[i].eid);
3088 if (!m || !m->key)
3089 return -1;
3090
3091 if (key_id != m->key_id || vec_cmp (m->key, key_out[0]))
3092 {
3093 clib_warning ("keys does not match! %v, %v", key_out[0], m->key);
3094 return -1;
3095 }
3096 }
3097 return 0;
3098}
3099
3100static int
3101parse_map_records (vlib_buffer_t * b, map_records_arg_t * a, u8 count)
3102{
3103 locator_t *locators = 0;
3104 u32 i, len;
3105 gid_address_t deid;
3106 mapping_t m;
3107 locator_t *loc;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003108
3109 /* parse record eid */
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003110 for (i = 0; i < count; i++)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003111 {
3112 len = lisp_msg_parse_mapping_record (b, &deid, &locators, NULL);
3113 if (len == ~0)
3114 {
3115 clib_warning ("Failed to parse mapping record!");
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003116 vec_foreach (loc, locators) locator_free (loc);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003117 vec_free (locators);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003118 return -1;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003119 }
3120
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003121 m.locators = locators;
3122 gid_address_copy (&m.eid, &deid);
3123 vec_add1 (a->mappings, m);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003124 }
3125
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003126 return 0;
3127}
3128
3129static map_records_arg_t *
3130parse_map_notify (vlib_buffer_t * b)
3131{
3132 int rc = 0;
3133 map_notify_hdr_t *mnotif_hdr;
3134 lisp_key_type_t key_id;
3135 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3136 u8 *key = 0;
3137 gid_address_t deid;
3138 u16 auth_data_len = 0;
3139 u8 record_count;
3140 map_records_arg_t *a = clib_mem_alloc (sizeof (*a));
3141
3142 memset (a, 0, sizeof (*a));
3143 mnotif_hdr = vlib_buffer_get_current (b);
3144 vlib_buffer_pull (b, sizeof (*mnotif_hdr));
3145 memset (&deid, 0, sizeof (deid));
3146
3147 a->nonce = MNOTIFY_NONCE (mnotif_hdr);
3148 key_id = clib_net_to_host_u16 (MNOTIFY_KEY_ID (mnotif_hdr));
3149 auth_data_len = auth_data_len_by_key_id (key_id);
3150
3151 /* advance buffer by authentication data */
3152 vlib_buffer_pull (b, auth_data_len);
3153
3154 record_count = MNOTIFY_REC_COUNT (mnotif_hdr);
3155 rc = parse_map_records (b, a, record_count);
3156 if (rc != 0)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003157 {
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003158 map_records_arg_free (a);
3159 return 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003160 }
3161
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003162 rc = map_record_integrity_check (lcm, a->mappings, key_id, &key);
3163 if (rc != 0)
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003164 {
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003165 map_records_arg_free (a);
3166 return 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003167 }
3168
3169 /* verify authentication data */
3170 if (!is_auth_data_valid (mnotif_hdr, vlib_buffer_get_tail (b)
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003171 - (u8 *) mnotif_hdr, key_id, key))
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003172 {
3173 clib_warning ("Map-notify auth data verification failed for nonce %lu!",
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003174 a->nonce);
3175 map_records_arg_free (a);
3176 return 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003177 }
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003178 return a;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003179}
3180
3181static vlib_buffer_t *
3182build_map_reply (lisp_cp_main_t * lcm, ip_address_t * sloc,
3183 ip_address_t * dst, u64 nonce, u8 probe_bit,
3184 mapping_t * records, u16 dst_port, u32 * bi_res)
3185{
3186 vlib_buffer_t *b;
3187 u32 bi;
3188 vlib_main_t *vm = lcm->vlib_main;
3189
3190 if (vlib_buffer_alloc (vm, &bi, 1) != 1)
3191 {
3192 clib_warning ("Can't allocate buffer for Map-Register!");
3193 return 0;
3194 }
3195
3196 b = vlib_get_buffer (vm, bi);
3197
3198 /* leave some space for the encap headers */
3199 vlib_buffer_make_headroom (b, MAX_LISP_MSG_ENCAP_LEN);
3200
3201 lisp_msg_put_map_reply (b, records, nonce, probe_bit);
3202
3203 /* push outer ip header */
3204 pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, dst_port, sloc, dst);
3205
3206 bi_res[0] = bi;
3207 return b;
3208}
3209
3210static int
3211send_map_reply (lisp_cp_main_t * lcm, u32 mi, ip_address_t * dst,
3212 u8 probe_bit, u64 nonce, u16 dst_port,
3213 ip_address_t * probed_loc)
3214{
3215 ip_address_t src;
3216 u32 bi;
3217 vlib_buffer_t *b;
3218 vlib_frame_t *f;
3219 u32 next_index, *to_next;
3220 mapping_t *records = 0, *m;
3221
3222 m = pool_elt_at_index (lcm->mapping_pool, mi);
3223 if (!m)
3224 return -1;
3225
3226 vec_add1 (records, m[0]);
3227 add_locators (lcm, &records[0], m->locator_set_index, probed_loc);
3228 memset (&src, 0, sizeof (src));
3229
3230 if (!ip_fib_get_first_egress_ip_for_dst (lcm, dst, &src))
3231 {
3232 clib_warning ("can't find inteface address for %U", format_ip_address,
3233 dst);
3234 return -1;
3235 }
3236
3237 b = build_map_reply (lcm, &src, dst, nonce, probe_bit, records, dst_port,
3238 &bi);
3239 if (!b)
3240 return -1;
3241 free_map_register_records (records);
3242
3243 vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
3244 next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
3245 ip4_lookup_node.index : ip6_lookup_node.index;
3246
3247 f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
3248
3249 /* Enqueue the packet */
3250 to_next = vlib_frame_vector_args (f);
3251 to_next[0] = bi;
3252 f->n_vectors = 1;
3253 vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
3254 return 0;
3255}
3256
Filip Tehlarb601f222017-01-02 10:22:56 +01003257static void
3258find_ip_header (vlib_buffer_t * b, u8 ** ip_hdr)
3259{
3260 const i32 start = vnet_buffer (b)->ip.start_of_ip_header;
3261 if (start < 0 && start < -sizeof (b->pre_data))
3262 {
3263 *ip_hdr = 0;
3264 return;
3265 }
3266
3267 *ip_hdr = b->data + start;
3268 if ((u8 *) * ip_hdr > (u8 *) vlib_buffer_get_current (b))
3269 *ip_hdr = 0;
3270}
3271
Florin Corase127a7e2016-02-18 22:20:01 +01003272void
Filip Tehlarcda70662017-01-16 10:30:03 +01003273process_map_request (vlib_main_t * vm, vlib_node_runtime_t * node,
3274 lisp_cp_main_t * lcm, vlib_buffer_t * b)
Florin Corase127a7e2016-02-18 22:20:01 +01003275{
Filip Tehlarb601f222017-01-02 10:22:56 +01003276 u8 *ip_hdr = 0;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003277 ip_address_t *dst_loc = 0, probed_loc, src_loc;
3278 mapping_t m;
Florin Corasa2157cf2016-08-16 21:09:14 +02003279 map_request_hdr_t *mreq_hdr;
Florin Corase127a7e2016-02-18 22:20:01 +01003280 gid_address_t src, dst;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003281 u64 nonce;
Filip Tehlarcda70662017-01-16 10:30:03 +01003282 u32 i, len = 0, rloc_probe_recv = 0;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003283 gid_address_t *itr_rlocs = 0;
Florin Corase127a7e2016-02-18 22:20:01 +01003284
3285 mreq_hdr = vlib_buffer_get_current (b);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003286 if (!MREQ_SMR (mreq_hdr) && !MREQ_RLOC_PROBE (mreq_hdr))
Florin Corasa2157cf2016-08-16 21:09:14 +02003287 {
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003288 clib_warning
3289 ("Only SMR Map-Requests and RLOC probe supported for now!");
Florin Corase127a7e2016-02-18 22:20:01 +01003290 return;
Florin Corasa2157cf2016-08-16 21:09:14 +02003291 }
Florin Corase127a7e2016-02-18 22:20:01 +01003292
Filip Tehlarb601f222017-01-02 10:22:56 +01003293 vlib_buffer_pull (b, sizeof (*mreq_hdr));
3294 nonce = MREQ_NONCE (mreq_hdr);
3295
Florin Corase127a7e2016-02-18 22:20:01 +01003296 /* parse src eid */
3297 len = lisp_msg_parse_addr (b, &src);
3298 if (len == ~0)
3299 return;
3300
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003301 len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
3302 MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
Florin Corase127a7e2016-02-18 22:20:01 +01003303 if (len == ~0)
Filip Tehlarcda70662017-01-16 10:30:03 +01003304 goto done;
Florin Corase127a7e2016-02-18 22:20:01 +01003305
3306 /* parse eid records and send SMR-invoked map-requests */
Florin Corasa2157cf2016-08-16 21:09:14 +02003307 for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
Florin Corase127a7e2016-02-18 22:20:01 +01003308 {
Florin Corasa2157cf2016-08-16 21:09:14 +02003309 memset (&dst, 0, sizeof (dst));
Florin Corase127a7e2016-02-18 22:20:01 +01003310 len = lisp_msg_parse_eid_rec (b, &dst);
3311 if (len == ~0)
Florin Corasa2157cf2016-08-16 21:09:14 +02003312 {
3313 clib_warning ("Can't parse map-request EID-record");
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003314 goto done;
Florin Corasa2157cf2016-08-16 21:09:14 +02003315 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003316
3317 if (MREQ_SMR (mreq_hdr))
3318 {
3319 /* send SMR-invoked map-requests */
3320 queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
3321 }
3322 else if (MREQ_RLOC_PROBE (mreq_hdr))
3323 {
Filip Tehlarb601f222017-01-02 10:22:56 +01003324 find_ip_header (b, &ip_hdr);
3325 if (!ip_hdr)
3326 {
3327 clib_warning ("Cannot find the IP header!");
Filip Tehlarcda70662017-01-16 10:30:03 +01003328 goto done;
Filip Tehlarb601f222017-01-02 10:22:56 +01003329 }
Filip Tehlarcda70662017-01-16 10:30:03 +01003330 rloc_probe_recv++;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003331 memset (&m, 0, sizeof (m));
3332 u32 mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
3333
3334 // TODO: select best locator; for now use the first one
3335 dst_loc = &gid_address_ip (&itr_rlocs[0]);
3336
3337 /* get src/dst IP addresses */
3338 get_src_and_dst_ip (ip_hdr, &src_loc, &probed_loc);
3339
3340 // TODO get source port from buffer
3341 u16 src_port = LISP_CONTROL_PORT;
3342
3343 send_map_reply (lcm, mi, dst_loc, 1 /* probe-bit */ , nonce,
3344 src_port, &probed_loc);
3345 }
Florin Corase127a7e2016-02-18 22:20:01 +01003346 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003347
3348done:
Filip Tehlarcda70662017-01-16 10:30:03 +01003349 vlib_node_increment_counter (vm, node->node_index,
3350 LISP_CP_INPUT_ERROR_RLOC_PROBE_REQ_RECEIVED,
3351 rloc_probe_recv);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003352 vec_free (itr_rlocs);
Florin Corase127a7e2016-02-18 22:20:01 +01003353}
3354
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003355static map_records_arg_t *
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003356parse_map_reply (vlib_buffer_t * b)
3357{
3358 locator_t probed;
3359 gid_address_t deid;
3360 void *h;
3361 u32 i, len = 0;
3362 mapping_t m;
3363 map_reply_hdr_t *mrep_hdr;
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003364 map_records_arg_t *a = clib_mem_alloc (sizeof (*a));
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003365 memset (a, 0, sizeof (*a));
3366 locator_t *locators;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003367
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003368 mrep_hdr = vlib_buffer_get_current (b);
3369 a->nonce = MREP_NONCE (mrep_hdr);
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003370 a->is_rloc_probe = MREP_RLOC_PROBE (mrep_hdr);
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003371 vlib_buffer_pull (b, sizeof (*mrep_hdr));
3372
3373 for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
3374 {
3375 memset (&m, 0, sizeof (m));
3376 locators = 0;
3377 h = vlib_buffer_get_current (b);
3378
3379 m.ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
3380 m.action = MAP_REC_ACTION (h);
3381 m.authoritative = MAP_REC_AUTH (h);
3382
3383 len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
3384 if (len == ~0)
3385 {
3386 clib_warning ("Failed to parse mapping record!");
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003387 map_records_arg_free (a);
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003388 return 0;
3389 }
3390
3391 m.locators = locators;
3392 gid_address_copy (&m.eid, &deid);
3393 vec_add1 (a->mappings, m);
3394 }
3395 return a;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003396}
3397
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003398static void
3399queue_map_reply_for_processing (map_records_arg_t * a)
3400{
Florin Coras655fcc42017-01-10 08:57:54 -08003401 vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (*a));
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003402}
3403
3404static void
3405queue_map_notify_for_processing (map_records_arg_t * a)
3406{
3407 vl_api_rpc_call_main_thread (process_map_notify, (u8 *) a, sizeof (a[0]));
3408}
3409
Florin Corase127a7e2016-02-18 22:20:01 +01003410static uword
3411lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
Florin Corasa2157cf2016-08-16 21:09:14 +02003412 vlib_frame_t * from_frame)
Florin Corase127a7e2016-02-18 22:20:01 +01003413{
Filip Tehlarcda70662017-01-16 10:30:03 +01003414 u32 n_left_from, *from, *to_next_drop, rloc_probe_rep_recv = 0,
3415 map_notifies_recv = 0;
Florin Corase127a7e2016-02-18 22:20:01 +01003416 lisp_msg_type_e type;
Florin Corasa2157cf2016-08-16 21:09:14 +02003417 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003418 map_records_arg_t *a;
Florin Corase127a7e2016-02-18 22:20:01 +01003419
3420 from = vlib_frame_vector_args (from_frame);
3421 n_left_from = from_frame->n_vectors;
3422
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003423
Florin Corase127a7e2016-02-18 22:20:01 +01003424 while (n_left_from > 0)
3425 {
3426 u32 n_left_to_next_drop;
3427
3428 vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
Florin Corasa2157cf2016-08-16 21:09:14 +02003429 to_next_drop, n_left_to_next_drop);
Florin Corase127a7e2016-02-18 22:20:01 +01003430 while (n_left_from > 0 && n_left_to_next_drop > 0)
Florin Corasa2157cf2016-08-16 21:09:14 +02003431 {
3432 u32 bi0;
3433 vlib_buffer_t *b0;
Florin Corase127a7e2016-02-18 22:20:01 +01003434
Florin Corasa2157cf2016-08-16 21:09:14 +02003435 bi0 = from[0];
3436 from += 1;
3437 n_left_from -= 1;
3438 to_next_drop[0] = bi0;
3439 to_next_drop += 1;
3440 n_left_to_next_drop -= 1;
Florin Corase127a7e2016-02-18 22:20:01 +01003441
Florin Corasa2157cf2016-08-16 21:09:14 +02003442 b0 = vlib_get_buffer (vm, bi0);
Florin Corase127a7e2016-02-18 22:20:01 +01003443
Florin Corasa2157cf2016-08-16 21:09:14 +02003444 type = lisp_msg_type (vlib_buffer_get_current (b0));
3445 switch (type)
3446 {
3447 case LISP_MAP_REPLY:
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003448 a = parse_map_reply (b0);
3449 if (a)
Filip Tehlarcda70662017-01-16 10:30:03 +01003450 {
3451 if (a->is_rloc_probe)
3452 rloc_probe_rep_recv++;
3453 queue_map_reply_for_processing (a);
3454 }
Florin Corasa2157cf2016-08-16 21:09:14 +02003455 break;
3456 case LISP_MAP_REQUEST:
Filip Tehlarcda70662017-01-16 10:30:03 +01003457 process_map_request (vm, node, lcm, b0);
Florin Corasa2157cf2016-08-16 21:09:14 +02003458 break;
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003459 case LISP_MAP_NOTIFY:
Filip Tehlarfb9931f2016-12-09 13:52:38 +01003460 a = parse_map_notify (b0);
3461 if (a)
Filip Tehlarcda70662017-01-16 10:30:03 +01003462 {
3463 map_notifies_recv++;
3464 queue_map_notify_for_processing (a);
3465 }
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003466 break;
Florin Corasa2157cf2016-08-16 21:09:14 +02003467 default:
3468 clib_warning ("Unsupported LISP message type %d", type);
3469 break;
3470 }
Florin Corase127a7e2016-02-18 22:20:01 +01003471
Florin Corasa2157cf2016-08-16 21:09:14 +02003472 b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
Florin Corase127a7e2016-02-18 22:20:01 +01003473
Florin Corasa2157cf2016-08-16 21:09:14 +02003474 if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
3475 {
Florin Corase127a7e2016-02-18 22:20:01 +01003476
Florin Corasa2157cf2016-08-16 21:09:14 +02003477 }
3478 }
Florin Corase127a7e2016-02-18 22:20:01 +01003479
Florin Corasa2157cf2016-08-16 21:09:14 +02003480 vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
3481 n_left_to_next_drop);
Florin Corase127a7e2016-02-18 22:20:01 +01003482 }
Filip Tehlarcda70662017-01-16 10:30:03 +01003483 vlib_node_increment_counter (vm, node->node_index,
3484 LISP_CP_INPUT_ERROR_RLOC_PROBE_REP_RECEIVED,
3485 rloc_probe_rep_recv);
3486 vlib_node_increment_counter (vm, node->node_index,
3487 LISP_CP_INPUT_ERROR_MAP_NOTIFIES_RECEIVED,
3488 map_notifies_recv);
Florin Corase127a7e2016-02-18 22:20:01 +01003489 return from_frame->n_vectors;
3490}
3491
Florin Corasa2157cf2016-08-16 21:09:14 +02003492/* *INDENT-OFF* */
Florin Corase127a7e2016-02-18 22:20:01 +01003493VLIB_REGISTER_NODE (lisp_cp_input_node) = {
3494 .function = lisp_cp_input,
3495 .name = "lisp-cp-input",
3496 .vector_size = sizeof (u32),
3497 .format_trace = format_lisp_cp_input_trace,
3498 .type = VLIB_NODE_TYPE_INTERNAL,
3499
3500 .n_errors = LISP_CP_INPUT_N_ERROR,
3501 .error_strings = lisp_cp_input_error_strings,
3502
3503 .n_next_nodes = LISP_CP_INPUT_N_NEXT,
3504
3505 .next_nodes = {
3506 [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
3507 },
3508};
Florin Corasa2157cf2016-08-16 21:09:14 +02003509/* *INDENT-ON* */
Florin Corase127a7e2016-02-18 22:20:01 +01003510
3511clib_error_t *
Florin Corasa2157cf2016-08-16 21:09:14 +02003512lisp_cp_init (vlib_main_t * vm)
Florin Corase127a7e2016-02-18 22:20:01 +01003513{
Florin Corasa2157cf2016-08-16 21:09:14 +02003514 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
3515 clib_error_t *error = 0;
Florin Corase127a7e2016-02-18 22:20:01 +01003516
3517 if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
3518 return error;
3519
3520 lcm->im4 = &ip4_main;
3521 lcm->im6 = &ip6_main;
3522 lcm->vlib_main = vm;
Florin Corasa2157cf2016-08-16 21:09:14 +02003523 lcm->vnet_main = vnet_get_main ();
Andrej Kozemcakb6e4d392016-06-14 13:55:57 +02003524 lcm->mreq_itr_rlocs = ~0;
Florin Corasf727db92016-06-23 15:01:58 +02003525 lcm->lisp_pitr = 0;
Florin Corasba888e42017-01-24 11:38:18 -08003526 lcm->flags = 0;
Florin Coras5a1c11b2016-09-06 16:29:34 +02003527 memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
Florin Corase127a7e2016-02-18 22:20:01 +01003528
3529 gid_dictionary_init (&lcm->mapping_index_by_gid);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003530 lcm->do_map_resolver_election = 1;
Florin Corasdca88042016-09-14 16:01:38 +02003531 lcm->map_request_mode = MR_MODE_DST_ONLY;
Florin Corase127a7e2016-02-18 22:20:01 +01003532
Florin Coras577c3552016-04-21 00:45:40 +02003533 /* default vrf mapped to vni 0 */
Florin Corasa2157cf2016-08-16 21:09:14 +02003534 hash_set (lcm->table_id_by_vni, 0, 0);
3535 hash_set (lcm->vni_by_table_id, 0, 0);
Florin Coras577c3552016-04-21 00:45:40 +02003536
Florin Corase127a7e2016-02-18 22:20:01 +01003537 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
Florin Corasa2157cf2016-08-16 21:09:14 +02003538 lisp_cp_input_node.index, 1 /* is_ip4 */ );
Florin Corase127a7e2016-02-18 22:20:01 +01003539 udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
Florin Corasa2157cf2016-08-16 21:09:14 +02003540 lisp_cp_input_node.index, 0 /* is_ip4 */ );
Florin Corase127a7e2016-02-18 22:20:01 +01003541
Filip Tehlar9677a942016-11-28 10:23:31 +01003542 u64 now = clib_cpu_time_now ();
3543 timing_wheel_init (&lcm->wheel, now, vm->clib_time.clocks_per_second);
Florin Corase127a7e2016-02-18 22:20:01 +01003544 return 0;
3545}
3546
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003547static void *
Florin Corasa2157cf2016-08-16 21:09:14 +02003548send_map_request_thread_fn (void *arg)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003549{
Florin Corasa2157cf2016-08-16 21:09:14 +02003550 map_request_args_t *a = arg;
3551 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003552
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003553 if (a->is_resend)
3554 resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
3555 else
Filip Tehlarcdab4bd2016-12-06 10:31:57 +01003556 send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003557
3558 return 0;
3559}
3560
3561static int
3562queue_map_request (gid_address_t * seid, gid_address_t * deid,
Florin Corasa2157cf2016-08-16 21:09:14 +02003563 u8 smr_invoked, u8 is_resend)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003564{
3565 map_request_args_t a;
3566
3567 a.is_resend = is_resend;
3568 gid_address_copy (&a.seid, seid);
3569 gid_address_copy (&a.deid, deid);
3570 a.smr_invoked = smr_invoked;
3571
3572 vl_api_rpc_call_main_thread (send_map_request_thread_fn,
Florin Corasa2157cf2016-08-16 21:09:14 +02003573 (u8 *) & a, sizeof (a));
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003574 return 0;
3575}
3576
3577/**
3578 * Take an action with a pending map request depending on expiration time
3579 * and re-try counters.
3580 */
3581static void
3582update_pending_request (pending_map_request_t * r, f64 dt)
3583{
Florin Corasa2157cf2016-08-16 21:09:14 +02003584 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003585 lisp_msmr_t *mr;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003586
3587 if (r->time_to_expire - dt < 0)
3588 /* it's time to decide what to do with this pending request */
3589 {
3590 if (r->retries_num >= NUMBER_OF_RETRIES)
Florin Corasa2157cf2016-08-16 21:09:14 +02003591 /* too many retries -> assume current map resolver is not available */
3592 {
3593 mr = get_map_resolver (&lcm->active_map_resolver);
3594 if (!mr)
3595 {
3596 clib_warning ("Map resolver %U not found - probably deleted "
3597 "by the user recently.", format_ip_address,
3598 &lcm->active_map_resolver);
3599 }
3600 else
3601 {
3602 clib_warning ("map resolver %U is unreachable, ignoring",
3603 format_ip_address, &lcm->active_map_resolver);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003604
Florin Corasa2157cf2016-08-16 21:09:14 +02003605 /* mark current map resolver unavailable so it won't be
3606 * selected next time */
3607 mr->is_down = 1;
3608 mr->last_update = vlib_time_now (lcm->vlib_main);
3609 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003610
Florin Corasa2157cf2016-08-16 21:09:14 +02003611 reset_pending_mr_counters (r);
3612 elect_map_resolver (lcm);
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003613
Florin Corasa2157cf2016-08-16 21:09:14 +02003614 /* try to find a next eligible map resolver and re-send */
3615 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
3616 1 /* resend */ );
3617 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003618 else
Florin Corasa2157cf2016-08-16 21:09:14 +02003619 {
3620 /* try again */
3621 queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
3622 1 /* resend */ );
3623 r->retries_num++;
3624 r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
3625 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003626 }
3627 else
3628 r->time_to_expire -= dt;
3629}
3630
3631static void
3632remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
3633{
Florin Corasa2157cf2016-08-16 21:09:14 +02003634 u64 *nonce;
3635 pending_map_request_t *pmr;
3636 u32 *to_be_removed = 0, *pmr_index;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003637
Florin Corasa2157cf2016-08-16 21:09:14 +02003638 /* *INDENT-OFF* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003639 pool_foreach (pmr, lcm->pending_map_requests_pool,
Florin Corasa2157cf2016-08-16 21:09:14 +02003640 ({
3641 if (pmr->to_be_removed)
3642 {
3643 clib_fifo_foreach (nonce, pmr->nonces, ({
3644 hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
3645 }));
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003646
Florin Corasa2157cf2016-08-16 21:09:14 +02003647 vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
3648 }
3649 }));
3650 /* *INDENT-ON* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003651
3652 vec_foreach (pmr_index, to_be_removed)
3653 pool_put_index (lcm->pending_map_requests_by_nonce, pmr_index[0]);
3654
3655 vec_free (to_be_removed);
3656}
3657
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003658static void
3659update_rloc_probing (lisp_cp_main_t * lcm, f64 dt)
3660{
3661 static f64 time_left = RLOC_PROBING_INTERVAL;
3662
3663 if (!lcm->is_enabled || !lcm->rloc_probing)
3664 return;
3665
3666 time_left -= dt;
3667 if (time_left <= 0)
3668 {
3669 time_left = RLOC_PROBING_INTERVAL;
3670 send_rloc_probes (lcm);
3671 }
3672}
3673
3674static void
3675update_map_register (lisp_cp_main_t * lcm, f64 dt)
3676{
3677 static f64 time_left = QUICK_MAP_REGISTER_INTERVAL;
3678 static u64 mreg_sent_counter = 0;
3679
3680 if (!lcm->is_enabled || !lcm->map_registering)
3681 return;
3682
3683 time_left -= dt;
3684 if (time_left <= 0)
3685 {
3686 if (mreg_sent_counter >= QUICK_MAP_REGISTER_MSG_COUNT)
3687 time_left = MAP_REGISTER_INTERVAL;
3688 else
3689 {
3690 mreg_sent_counter++;
3691 time_left = QUICK_MAP_REGISTER_INTERVAL;
3692 }
3693 send_map_register (lcm, 1 /* want map notify */ );
3694 }
3695}
3696
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003697static uword
3698send_map_resolver_service (vlib_main_t * vm,
Florin Corasa2157cf2016-08-16 21:09:14 +02003699 vlib_node_runtime_t * rt, vlib_frame_t * f)
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003700{
Filip Tehlar9677a942016-11-28 10:23:31 +01003701 u32 *expired = 0;
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003702 f64 period = 2.0;
Florin Corasa2157cf2016-08-16 21:09:14 +02003703 pending_map_request_t *pmr;
3704 lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003705
3706 while (1)
3707 {
3708 vlib_process_wait_for_event_or_clock (vm, period);
3709
3710 /* currently no signals are expected - just wait for clock */
3711 (void) vlib_process_get_events (vm, 0);
3712
Florin Corasa2157cf2016-08-16 21:09:14 +02003713 /* *INDENT-OFF* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003714 pool_foreach (pmr, lcm->pending_map_requests_pool,
Florin Corasa2157cf2016-08-16 21:09:14 +02003715 ({
3716 if (!pmr->to_be_removed)
3717 update_pending_request (pmr, period);
3718 }));
3719 /* *INDENT-ON* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003720
3721 remove_dead_pending_map_requests (lcm);
Filip Tehlar397fd7d2016-10-26 14:31:24 +02003722
3723 update_map_register (lcm, period);
3724 update_rloc_probing (lcm, period);
Filip Tehlar9677a942016-11-28 10:23:31 +01003725
3726 u64 now = clib_cpu_time_now ();
3727
3728 expired = timing_wheel_advance (&lcm->wheel, now, expired, 0);
3729 if (vec_len (expired) > 0)
3730 {
3731 u32 *mi = 0;
3732 vec_foreach (mi, expired)
3733 {
3734 remove_expired_mapping (lcm, mi[0]);
3735 }
3736 _vec_len (expired) = 0;
3737 }
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003738 }
3739
3740 /* unreachable */
3741 return 0;
3742}
3743
Florin Corasa2157cf2016-08-16 21:09:14 +02003744/* *INDENT-OFF* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003745VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
3746 .function = send_map_resolver_service,
3747 .type = VLIB_NODE_TYPE_PROCESS,
3748 .name = "lisp-retry-service",
3749 .process_log2_n_stack_bytes = 16,
3750};
Florin Corasa2157cf2016-08-16 21:09:14 +02003751/* *INDENT-ON* */
Filip Tehlara5abdeb2016-07-18 17:35:40 +02003752
Florin Corasa2157cf2016-08-16 21:09:14 +02003753VLIB_INIT_FUNCTION (lisp_cp_init);
3754
3755/*
3756 * fd.io coding-style-patch-verification: ON
3757 *
3758 * Local Variables:
3759 * eval: (c-set-style "gnu")
3760 * End:
3761 */