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e5c83d9b DS |
1 | /* |
2 | * PBR-nht Code | |
3 | * Copyright (C) 2018 Cumulus Networks, Inc. | |
4 | * Donald Sharp | |
5 | * | |
6 | * FRR is free software; you can redistribute it and/or modify it | |
7 | * under the terms of the GNU General Public License as published by the | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * FRR is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License along | |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | #include <zebra.h> | |
21 | ||
22 | #include <log.h> | |
23 | #include <nexthop.h> | |
50d89650 SW |
24 | #include "nexthop_group.h" |
25 | #include "nexthop_group_private.h" | |
e5c83d9b DS |
26 | #include <hash.h> |
27 | #include <jhash.h> | |
28 | #include <vty.h> | |
29 | #include <zclient.h> | |
b13e5ad6 | 30 | #include <debug.h> |
e5c83d9b DS |
31 | |
32 | #include "pbrd/pbr_nht.h" | |
33 | #include "pbrd/pbr_map.h" | |
e5c83d9b DS |
34 | #include "pbrd/pbr_zebra.h" |
35 | #include "pbrd/pbr_memory.h" | |
36 | #include "pbrd/pbr_debug.h" | |
37 | ||
38 | DEFINE_MTYPE_STATIC(PBRD, PBR_NHG, "PBR Nexthop Groups") | |
39 | ||
fcf29c69 | 40 | struct hash *pbr_nhg_hash; |
b13e5ad6 | 41 | static struct hash *pbr_nhrc_hash; |
e5c83d9b DS |
42 | |
43 | static uint32_t pbr_nhg_low_table; | |
44 | static uint32_t pbr_nhg_high_table; | |
45 | static uint32_t pbr_nhg_low_rule; | |
46 | static uint32_t pbr_nhg_high_rule; | |
47 | static bool nhg_tableid[65535]; | |
48 | ||
b13e5ad6 DS |
49 | static void pbr_nht_install_nexthop_group(struct pbr_nexthop_group_cache *pnhgc, |
50 | struct nexthop_group nhg); | |
ff9799c3 DS |
51 | static void |
52 | pbr_nht_uninstall_nexthop_group(struct pbr_nexthop_group_cache *pnhgc, | |
53 | struct nexthop_group nhg, | |
aafac994 | 54 | enum nexthop_types_t nh_type); |
b13e5ad6 DS |
55 | |
56 | /* | |
57 | * Nexthop refcount. | |
58 | */ | |
59 | struct nhrc { | |
60 | struct nexthop nexthop; | |
61 | unsigned int refcount; | |
62 | }; | |
63 | ||
64 | /* Hash functions for pbr_nhrc_hash ---------------------------------------- */ | |
65 | ||
66 | static void *pbr_nhrc_hash_alloc(void *p) | |
67 | { | |
68 | struct nhrc *nhrc = XCALLOC(MTYPE_PBR_NHG, sizeof(struct nhrc)); | |
69 | nhrc->nexthop = *(struct nexthop *)p; | |
ad9255f8 SW |
70 | nhrc->nexthop.next = NULL; |
71 | nhrc->nexthop.prev = NULL; | |
b13e5ad6 DS |
72 | return nhrc; |
73 | } | |
74 | ||
74df8d6d | 75 | static bool pbr_nhrc_hash_equal(const void *arg1, const void *arg2) |
b13e5ad6 DS |
76 | { |
77 | const struct nexthop *nh1, *nh2; | |
78 | ||
79 | nh1 = arg1; | |
80 | nh2 = arg2; | |
81 | ||
82 | return nexthop_same(nh1, nh2); | |
83 | } | |
84 | ||
85 | /* ------------------------------------------------------------------------- */ | |
86 | ||
e5c83d9b DS |
87 | static void *pbr_nh_alloc(void *p) |
88 | { | |
89 | struct pbr_nexthop_cache *new; | |
90 | struct pbr_nexthop_cache *pnhc = (struct pbr_nexthop_cache *)p; | |
b13e5ad6 | 91 | struct nhrc *nhrc; |
e5c83d9b DS |
92 | |
93 | new = XCALLOC(MTYPE_PBR_NHG, sizeof(*new)); | |
734bf907 DS |
94 | nhrc = hash_get(pbr_nhrc_hash, &pnhc->nexthop, pbr_nhrc_hash_alloc); |
95 | new->nexthop = nhrc->nexthop; | |
b13e5ad6 DS |
96 | |
97 | /* Decremented again in pbr_nh_delete */ | |
98 | ++nhrc->refcount; | |
e5c83d9b | 99 | |
15569c58 | 100 | DEBUGD(&pbr_dbg_nht, "%s: Sending nexthop to Zebra", __func__); |
e5c83d9b | 101 | |
734bf907 | 102 | pbr_send_rnh(&new->nexthop, true); |
e5c83d9b DS |
103 | |
104 | new->valid = false; | |
105 | return new; | |
106 | } | |
107 | ||
108 | static void pbr_nh_delete(struct pbr_nexthop_cache **pnhc) | |
109 | { | |
b13e5ad6 DS |
110 | struct nhrc *nhrc; |
111 | ||
734bf907 | 112 | nhrc = hash_lookup(pbr_nhrc_hash, &((*pnhc)->nexthop)); |
b13e5ad6 DS |
113 | |
114 | if (nhrc) | |
115 | --nhrc->refcount; | |
116 | if (!nhrc || nhrc->refcount == 0) { | |
117 | DEBUGD(&pbr_dbg_nht, "%s: Removing nexthop from Zebra", | |
15569c58 | 118 | __func__); |
734bf907 | 119 | pbr_send_rnh(&((*pnhc)->nexthop), false); |
b13e5ad6 DS |
120 | } |
121 | if (nhrc && nhrc->refcount == 0) { | |
122 | hash_release(pbr_nhrc_hash, nhrc); | |
123 | XFREE(MTYPE_PBR_NHG, nhrc); | |
124 | } | |
e5c83d9b DS |
125 | |
126 | XFREE(MTYPE_PBR_NHG, *pnhc); | |
127 | } | |
128 | ||
e3b78da8 | 129 | static void pbr_nh_delete_iterate(struct hash_bucket *b, void *p) |
b13e5ad6 DS |
130 | { |
131 | pbr_nh_delete((struct pbr_nexthop_cache **)&b->data); | |
132 | } | |
133 | ||
d8b87afe | 134 | static uint32_t pbr_nh_hash_key(const void *arg) |
e5c83d9b DS |
135 | { |
136 | uint32_t key; | |
d8b87afe | 137 | const struct pbr_nexthop_cache *pbrnc = arg; |
e5c83d9b | 138 | |
734bf907 | 139 | key = nexthop_hash(&pbrnc->nexthop); |
e5c83d9b DS |
140 | |
141 | return key; | |
142 | } | |
143 | ||
74df8d6d | 144 | static bool pbr_nh_hash_equal(const void *arg1, const void *arg2) |
e5c83d9b DS |
145 | { |
146 | const struct pbr_nexthop_cache *pbrnc1 = | |
147 | (const struct pbr_nexthop_cache *)arg1; | |
148 | const struct pbr_nexthop_cache *pbrnc2 = | |
149 | (const struct pbr_nexthop_cache *)arg2; | |
150 | ||
734bf907 | 151 | if (pbrnc1->nexthop.vrf_id != pbrnc2->nexthop.vrf_id) |
74df8d6d | 152 | return false; |
e5c83d9b | 153 | |
734bf907 | 154 | if (pbrnc1->nexthop.ifindex != pbrnc2->nexthop.ifindex) |
74df8d6d | 155 | return false; |
e5c83d9b | 156 | |
734bf907 | 157 | if (pbrnc1->nexthop.type != pbrnc2->nexthop.type) |
74df8d6d | 158 | return false; |
e5c83d9b | 159 | |
734bf907 | 160 | switch (pbrnc1->nexthop.type) { |
e5c83d9b | 161 | case NEXTHOP_TYPE_IFINDEX: |
734bf907 | 162 | return pbrnc1->nexthop.ifindex == pbrnc2->nexthop.ifindex; |
e5c83d9b DS |
163 | case NEXTHOP_TYPE_IPV4_IFINDEX: |
164 | case NEXTHOP_TYPE_IPV4: | |
734bf907 DS |
165 | return pbrnc1->nexthop.gate.ipv4.s_addr |
166 | == pbrnc2->nexthop.gate.ipv4.s_addr; | |
e5c83d9b DS |
167 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
168 | case NEXTHOP_TYPE_IPV6: | |
734bf907 DS |
169 | return !memcmp(&pbrnc1->nexthop.gate.ipv6, |
170 | &pbrnc2->nexthop.gate.ipv6, 16); | |
e5c83d9b | 171 | case NEXTHOP_TYPE_BLACKHOLE: |
734bf907 | 172 | return pbrnc1->nexthop.bh_type == pbrnc2->nexthop.bh_type; |
e5c83d9b DS |
173 | } |
174 | ||
175 | /* | |
176 | * We should not get here | |
177 | */ | |
74df8d6d | 178 | return false; |
e5c83d9b DS |
179 | } |
180 | ||
b13e5ad6 DS |
181 | static void pbr_nhgc_delete(struct pbr_nexthop_group_cache *p) |
182 | { | |
183 | hash_iterate(p->nhh, pbr_nh_delete_iterate, NULL); | |
184 | hash_free(p->nhh); | |
185 | XFREE(MTYPE_PBR_NHG, p); | |
186 | } | |
187 | ||
188 | static void *pbr_nhgc_alloc(void *p) | |
189 | { | |
190 | struct pbr_nexthop_group_cache *new; | |
191 | struct pbr_nexthop_group_cache *pnhgc = | |
192 | (struct pbr_nexthop_group_cache *)p; | |
193 | ||
194 | new = XCALLOC(MTYPE_PBR_NHG, sizeof(*new)); | |
195 | ||
65b88efa | 196 | strlcpy(new->name, pnhgc->name, sizeof(pnhgc->name)); |
a4044dc1 | 197 | new->table_id = pbr_nht_get_next_tableid(false); |
b13e5ad6 | 198 | |
15569c58 DA |
199 | DEBUGD(&pbr_dbg_nht, "%s: NHT: %s assigned Table ID: %u", __func__, |
200 | new->name, new->table_id); | |
b13e5ad6 DS |
201 | |
202 | new->nhh = hash_create_size(8, pbr_nh_hash_key, pbr_nh_hash_equal, | |
203 | "PBR NH Cache Hash"); | |
204 | return new; | |
205 | } | |
206 | ||
207 | ||
e5c83d9b DS |
208 | void pbr_nhgroup_add_cb(const char *name) |
209 | { | |
b13e5ad6 DS |
210 | struct pbr_nexthop_group_cache *pnhgc; |
211 | struct nexthop_group_cmd *nhgc; | |
e5c83d9b | 212 | |
b13e5ad6 | 213 | nhgc = nhgc_find(name); |
68a63f60 QY |
214 | |
215 | if (!nhgc) { | |
1d5453d6 | 216 | DEBUGD(&pbr_dbg_nht, "%s: Could not find nhgc with name: %s", |
15569c58 | 217 | __func__, name); |
68a63f60 QY |
218 | return; |
219 | } | |
220 | ||
b13e5ad6 | 221 | pnhgc = pbr_nht_add_group(name); |
e5c83d9b | 222 | |
a4044dc1 QY |
223 | if (!pnhgc) |
224 | return; | |
225 | ||
15569c58 | 226 | DEBUGD(&pbr_dbg_nht, "%s: Added nexthop-group %s", __func__, name); |
b13e5ad6 | 227 | |
b13e5ad6 | 228 | pbr_map_check_nh_group_change(name); |
e5c83d9b DS |
229 | } |
230 | ||
b13e5ad6 | 231 | void pbr_nhgroup_add_nexthop_cb(const struct nexthop_group_cmd *nhgc, |
e5c83d9b DS |
232 | const struct nexthop *nhop) |
233 | { | |
b13e5ad6 | 234 | char debugstr[256]; |
3e300703 | 235 | struct pbr_nexthop_group_cache pnhgc_find = {}; |
b13e5ad6 | 236 | struct pbr_nexthop_group_cache *pnhgc; |
3e300703 | 237 | struct pbr_nexthop_cache pnhc_find = {}; |
b13e5ad6 DS |
238 | struct pbr_nexthop_cache *pnhc; |
239 | ||
a4044dc1 QY |
240 | if (!pbr_nht_get_next_tableid(true)) { |
241 | zlog_warn( | |
242 | "%s: Exhausted all table identifiers; cannot create nexthop-group cache for nexthop-group '%s'", | |
15569c58 | 243 | __func__, nhgc->name); |
a4044dc1 QY |
244 | return; |
245 | } | |
246 | ||
b13e5ad6 DS |
247 | /* find pnhgc by name */ |
248 | strlcpy(pnhgc_find.name, nhgc->name, sizeof(pnhgc_find.name)); | |
249 | pnhgc = hash_get(pbr_nhg_hash, &pnhgc_find, pbr_nhgc_alloc); | |
e5c83d9b | 250 | |
b13e5ad6 | 251 | /* create & insert new pnhc into pnhgc->nhh */ |
734bf907 | 252 | pnhc_find.nexthop = *nhop; |
b13e5ad6 | 253 | pnhc = hash_get(pnhgc->nhh, &pnhc_find, pbr_nh_alloc); |
b13e5ad6 DS |
254 | |
255 | /* set parent pnhgc */ | |
256 | pnhc->parent = pnhgc; | |
e5c83d9b | 257 | |
b13e5ad6 DS |
258 | if (DEBUG_MODE_CHECK(&pbr_dbg_nht, DEBUG_MODE_ALL)) { |
259 | nexthop2str(nhop, debugstr, sizeof(debugstr)); | |
260 | DEBUGD(&pbr_dbg_nht, "%s: Added %s to nexthop-group %s", | |
15569c58 | 261 | __func__, debugstr, nhgc->name); |
b13e5ad6 DS |
262 | } |
263 | ||
264 | pbr_nht_install_nexthop_group(pnhgc, nhgc->nhg); | |
265 | pbr_map_check_nh_group_change(nhgc->name); | |
a106a408 | 266 | |
cb254f41 SW |
267 | if (nhop->type == NEXTHOP_TYPE_IFINDEX |
268 | || (nhop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
269 | && IN6_IS_ADDR_LINKLOCAL(&nhop->gate.ipv6))) { | |
a106a408 RW |
270 | struct interface *ifp; |
271 | ||
272 | ifp = if_lookup_by_index(nhop->ifindex, nhop->vrf_id); | |
273 | if (ifp) | |
274 | pbr_nht_nexthop_interface_update(ifp); | |
275 | } | |
e5c83d9b DS |
276 | } |
277 | ||
b13e5ad6 | 278 | void pbr_nhgroup_del_nexthop_cb(const struct nexthop_group_cmd *nhgc, |
e5c83d9b DS |
279 | const struct nexthop *nhop) |
280 | { | |
b13e5ad6 | 281 | char debugstr[256]; |
3e300703 | 282 | struct pbr_nexthop_group_cache pnhgc_find = {}; |
b13e5ad6 | 283 | struct pbr_nexthop_group_cache *pnhgc; |
3e300703 | 284 | struct pbr_nexthop_cache pnhc_find = {}; |
b13e5ad6 | 285 | struct pbr_nexthop_cache *pnhc; |
aafac994 | 286 | enum nexthop_types_t nh_type = nhop->type; |
b13e5ad6 DS |
287 | |
288 | /* find pnhgc by name */ | |
289 | strlcpy(pnhgc_find.name, nhgc->name, sizeof(pnhgc_find.name)); | |
a4044dc1 | 290 | pnhgc = hash_lookup(pbr_nhg_hash, &pnhgc_find); |
b13e5ad6 DS |
291 | |
292 | /* delete pnhc from pnhgc->nhh */ | |
734bf907 | 293 | pnhc_find.nexthop = *nhop; |
b13e5ad6 DS |
294 | pnhc = hash_release(pnhgc->nhh, &pnhc_find); |
295 | ||
296 | /* delete pnhc */ | |
297 | pbr_nh_delete(&pnhc); | |
e5c83d9b | 298 | |
b13e5ad6 DS |
299 | if (DEBUG_MODE_CHECK(&pbr_dbg_nht, DEBUG_MODE_ALL)) { |
300 | nexthop2str(nhop, debugstr, sizeof(debugstr)); | |
301 | DEBUGD(&pbr_dbg_nht, "%s: Removed %s from nexthop-group %s", | |
15569c58 | 302 | __func__, debugstr, nhgc->name); |
b13e5ad6 | 303 | } |
e5c83d9b | 304 | |
ff9799c3 DS |
305 | if (pnhgc->nhh->count) |
306 | pbr_nht_install_nexthop_group(pnhgc, nhgc->nhg); | |
307 | else | |
aafac994 | 308 | pbr_nht_uninstall_nexthop_group(pnhgc, nhgc->nhg, nh_type); |
ff9799c3 | 309 | |
b13e5ad6 | 310 | pbr_map_check_nh_group_change(nhgc->name); |
e5c83d9b DS |
311 | } |
312 | ||
313 | void pbr_nhgroup_delete_cb(const char *name) | |
314 | { | |
15569c58 | 315 | DEBUGD(&pbr_dbg_nht, "%s: Removed nexthop-group %s", __func__, name); |
b13e5ad6 | 316 | |
ff9799c3 DS |
317 | /* delete group from all pbrms's */ |
318 | pbr_nht_delete_group(name); | |
319 | ||
b13e5ad6 | 320 | pbr_map_check_nh_group_change(name); |
e5c83d9b DS |
321 | } |
322 | ||
09813729 SW |
323 | static void |
324 | pbr_nht_find_nhg_from_table_update(struct pbr_nexthop_group_cache *pnhgc, | |
325 | uint32_t table_id, bool installed) | |
326 | { | |
327 | if (pnhgc->table_id == table_id) { | |
328 | DEBUGD(&pbr_dbg_nht, "%s: %s: Table ID (%u) matches %s", | |
329 | __func__, (installed ? "install" : "remove"), table_id, | |
330 | pnhgc->name); | |
331 | ||
332 | pnhgc->installed = installed; | |
333 | pnhgc->valid = installed; | |
334 | pbr_map_schedule_policy_from_nhg(pnhgc->name, pnhgc->installed); | |
335 | } | |
336 | } | |
337 | ||
e3b78da8 | 338 | static void pbr_nht_find_nhg_from_table_install(struct hash_bucket *b, |
e5c83d9b DS |
339 | void *data) |
340 | { | |
341 | struct pbr_nexthop_group_cache *pnhgc = | |
342 | (struct pbr_nexthop_group_cache *)b->data; | |
09813729 SW |
343 | uint32_t table_id = *(uint32_t *)data; |
344 | ||
345 | pbr_nht_find_nhg_from_table_update(pnhgc, table_id, true); | |
e5c83d9b DS |
346 | } |
347 | ||
348 | void pbr_nht_route_installed_for_table(uint32_t table_id) | |
349 | { | |
350 | hash_iterate(pbr_nhg_hash, pbr_nht_find_nhg_from_table_install, | |
351 | &table_id); | |
352 | } | |
353 | ||
e3b78da8 | 354 | static void pbr_nht_find_nhg_from_table_remove(struct hash_bucket *b, |
e5c83d9b DS |
355 | void *data) |
356 | { | |
09813729 SW |
357 | struct pbr_nexthop_group_cache *pnhgc = |
358 | (struct pbr_nexthop_group_cache *)b->data; | |
359 | uint32_t table_id = *(uint32_t *)data; | |
360 | ||
361 | pbr_nht_find_nhg_from_table_update(pnhgc, table_id, false); | |
e5c83d9b DS |
362 | } |
363 | ||
364 | void pbr_nht_route_removed_for_table(uint32_t table_id) | |
365 | { | |
366 | hash_iterate(pbr_nhg_hash, pbr_nht_find_nhg_from_table_remove, | |
367 | &table_id); | |
368 | } | |
369 | ||
370 | /* | |
371 | * Loop through all nexthops in a nexthop group to check that they are all the | |
372 | * same. If they are not all the same, log this peculiarity. | |
373 | * | |
374 | * nhg | |
375 | * The nexthop group to check | |
376 | * | |
377 | * Returns: | |
378 | * - AFI of last nexthop in the group | |
379 | * - AFI_MAX on error | |
380 | */ | |
ff9799c3 | 381 | static afi_t pbr_nht_which_afi(struct nexthop_group nhg, |
aafac994 | 382 | enum nexthop_types_t nh_type) |
e5c83d9b DS |
383 | { |
384 | struct nexthop *nexthop; | |
385 | afi_t install_afi = AFI_MAX; | |
386 | bool v6, v4, bh; | |
d3765386 | 387 | |
268c24ee RW |
388 | if (nh_type) { |
389 | switch (nh_type) { | |
390 | case NEXTHOP_TYPE_IPV4: | |
391 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
392 | return AFI_IP; | |
393 | case NEXTHOP_TYPE_IPV6: | |
394 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
395 | return AFI_IP6; | |
396 | case NEXTHOP_TYPE_IFINDEX: | |
397 | case NEXTHOP_TYPE_BLACKHOLE: | |
398 | return AFI_MAX; | |
399 | } | |
400 | } | |
401 | ||
e5c83d9b DS |
402 | v6 = v4 = bh = false; |
403 | ||
268c24ee RW |
404 | for (ALL_NEXTHOPS(nhg, nexthop)) { |
405 | nh_type = nexthop->type; | |
406 | ||
407 | switch (nh_type) { | |
408 | case NEXTHOP_TYPE_IFINDEX: | |
409 | break; | |
410 | case NEXTHOP_TYPE_IPV4: | |
411 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
412 | v6 = true; | |
413 | install_afi = AFI_IP; | |
414 | break; | |
415 | case NEXTHOP_TYPE_IPV6: | |
416 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
417 | v4 = true; | |
418 | install_afi = AFI_IP6; | |
419 | break; | |
420 | case NEXTHOP_TYPE_BLACKHOLE: | |
421 | bh = true; | |
e5c83d9b DS |
422 | break; |
423 | } | |
424 | } | |
425 | ||
268c24ee RW |
426 | /* Interface and/or blackhole nexthops only. */ |
427 | if (!v4 && !v6) | |
ff9799c3 | 428 | install_afi = AFI_MAX; |
ff9799c3 | 429 | |
e5c83d9b DS |
430 | if (!bh && v6 && v4) |
431 | DEBUGD(&pbr_dbg_nht, | |
5e81f5dd DS |
432 | "%s: Saw both V6 and V4 nexthops...using %s", __func__, |
433 | afi2str(install_afi)); | |
e5c83d9b DS |
434 | if (bh && (v6 || v4)) |
435 | DEBUGD(&pbr_dbg_nht, | |
436 | "%s: Saw blackhole nexthop(s) with %s%s%s nexthop(s), using AFI_MAX.", | |
5e81f5dd DS |
437 | __func__, v4 ? "v4" : "", (v4 && v6) ? " and " : "", |
438 | v6 ? "v6" : ""); | |
e5c83d9b DS |
439 | |
440 | return install_afi; | |
441 | } | |
442 | ||
443 | static void pbr_nht_install_nexthop_group(struct pbr_nexthop_group_cache *pnhgc, | |
444 | struct nexthop_group nhg) | |
445 | { | |
446 | afi_t install_afi; | |
aafac994 | 447 | enum nexthop_types_t nh_type = 0; |
e5c83d9b | 448 | |
aafac994 | 449 | install_afi = pbr_nht_which_afi(nhg, nh_type); |
e5c83d9b | 450 | |
e5c83d9b DS |
451 | route_add(pnhgc, nhg, install_afi); |
452 | } | |
453 | ||
454 | static void | |
455 | pbr_nht_uninstall_nexthop_group(struct pbr_nexthop_group_cache *pnhgc, | |
ff9799c3 | 456 | struct nexthop_group nhg, |
aafac994 | 457 | enum nexthop_types_t nh_type) |
e5c83d9b DS |
458 | { |
459 | afi_t install_afi; | |
460 | ||
aafac994 | 461 | install_afi = pbr_nht_which_afi(nhg, nh_type); |
e5c83d9b DS |
462 | |
463 | pnhgc->installed = false; | |
464 | pnhgc->valid = false; | |
465 | route_delete(pnhgc, install_afi); | |
466 | } | |
467 | ||
468 | void pbr_nht_change_group(const char *name) | |
469 | { | |
470 | struct nexthop_group_cmd *nhgc; | |
471 | struct pbr_nexthop_group_cache *pnhgc; | |
472 | struct pbr_nexthop_group_cache find; | |
473 | struct nexthop *nhop; | |
474 | ||
475 | nhgc = nhgc_find(name); | |
476 | if (!nhgc) | |
477 | return; | |
478 | ||
479 | memset(&find, 0, sizeof(find)); | |
6612590d | 480 | snprintf(find.name, sizeof(find.name), "%s", name); |
e5c83d9b DS |
481 | pnhgc = hash_lookup(pbr_nhg_hash, &find); |
482 | ||
483 | if (!pnhgc) { | |
484 | DEBUGD(&pbr_dbg_nht, | |
485 | "%s: Could not find nexthop-group cache w/ name '%s'", | |
5e81f5dd | 486 | __func__, name); |
e5c83d9b DS |
487 | return; |
488 | } | |
489 | ||
490 | for (ALL_NEXTHOPS(nhgc->nhg, nhop)) { | |
491 | struct pbr_nexthop_cache lookup; | |
492 | struct pbr_nexthop_cache *pnhc; | |
493 | ||
734bf907 | 494 | lookup.nexthop = *nhop; |
e5c83d9b DS |
495 | pnhc = hash_lookup(pnhgc->nhh, &lookup); |
496 | if (!pnhc) { | |
497 | pnhc = hash_get(pnhgc->nhh, &lookup, pbr_nh_alloc); | |
498 | pnhc->parent = pnhgc; | |
499 | } | |
500 | } | |
501 | pbr_nht_install_nexthop_group(pnhgc, nhgc->nhg); | |
502 | } | |
503 | ||
504 | char *pbr_nht_nexthop_make_name(char *name, size_t l, | |
505 | uint32_t seqno, char *buffer) | |
506 | { | |
507 | snprintf(buffer, l, "%s%u", name, seqno); | |
508 | return buffer; | |
509 | } | |
510 | ||
f143cffa SW |
511 | void pbr_nht_add_individual_nexthop(struct pbr_map_sequence *pbrms, |
512 | const struct nexthop *nhop) | |
e5c83d9b DS |
513 | { |
514 | struct pbr_nexthop_group_cache *pnhgc; | |
515 | struct pbr_nexthop_group_cache find; | |
516 | struct pbr_nexthop_cache *pnhc; | |
e5c83d9b | 517 | struct pbr_nexthop_cache lookup; |
f143cffa SW |
518 | struct nexthop *nh; |
519 | char buf[PBR_NHC_NAMELEN]; | |
520 | ||
521 | pbrms->nhg = nexthop_group_new(); | |
522 | pbrms->internal_nhg_name = XSTRDUP( | |
523 | MTYPE_TMP, | |
524 | pbr_nht_nexthop_make_name(pbrms->parent->name, PBR_NHC_NAMELEN, | |
525 | pbrms->seqno, buf)); | |
526 | ||
527 | nh = nexthop_new(); | |
528 | memcpy(nh, nhop, sizeof(*nh)); | |
529 | ||
530 | nexthop_group_add_sorted(pbrms->nhg, nh); | |
e5c83d9b | 531 | |
e5c83d9b | 532 | memset(&find, 0, sizeof(find)); |
06210d1f | 533 | pbr_nht_nexthop_make_name(pbrms->parent->name, PBR_NHC_NAMELEN, |
e5c83d9b | 534 | pbrms->seqno, find.name); |
a4044dc1 QY |
535 | |
536 | if (!pbr_nht_get_next_tableid(true)) { | |
537 | zlog_warn( | |
538 | "%s: Exhausted all table identifiers; cannot create nexthop-group cache for nexthop-group '%s'", | |
15569c58 | 539 | __func__, find.name); |
a4044dc1 QY |
540 | return; |
541 | } | |
542 | ||
e5c83d9b DS |
543 | if (!pbrms->internal_nhg_name) |
544 | pbrms->internal_nhg_name = XSTRDUP(MTYPE_TMP, find.name); | |
545 | ||
546 | pnhgc = hash_get(pbr_nhg_hash, &find, pbr_nhgc_alloc); | |
547 | ||
734bf907 | 548 | lookup.nexthop = *pbrms->nhg->nexthop; |
e5c83d9b DS |
549 | pnhc = hash_get(pnhgc->nhh, &lookup, pbr_nh_alloc); |
550 | pnhc->parent = pnhgc; | |
fcf29c69 DS |
551 | if (nhop->vrf_id != VRF_DEFAULT) { |
552 | struct vrf *vrf = vrf_lookup_by_id(nhop->vrf_id); | |
553 | ||
554 | if (vrf) | |
555 | strlcpy(pnhc->vrf_name, vrf->name, | |
556 | sizeof(pnhc->vrf_name)); | |
557 | } | |
7cbdabff DS |
558 | |
559 | if (nhop->ifindex != 0) { | |
560 | struct interface *ifp = | |
561 | if_lookup_by_index(nhop->ifindex, nhop->vrf_id); | |
562 | ||
563 | if (ifp) | |
564 | strlcpy(pnhc->intf_name, ifp->name, | |
565 | sizeof(pnhc->intf_name)); | |
566 | } | |
e5c83d9b DS |
567 | pbr_nht_install_nexthop_group(pnhgc, *pbrms->nhg); |
568 | } | |
569 | ||
f143cffa | 570 | static void pbr_nht_release_individual_nexthop(struct pbr_map_sequence *pbrms) |
e5c83d9b DS |
571 | { |
572 | struct pbr_nexthop_group_cache *pnhgc; | |
573 | struct pbr_nexthop_group_cache find; | |
574 | struct pbr_nexthop_cache *pnhc; | |
575 | struct pbr_nexthop_cache lup; | |
e5c83d9b | 576 | struct nexthop *nh; |
aafac994 | 577 | enum nexthop_types_t nh_type = 0; |
e5c83d9b | 578 | |
e5c83d9b | 579 | memset(&find, 0, sizeof(find)); |
6612590d | 580 | snprintf(find.name, sizeof(find.name), "%s", pbrms->internal_nhg_name); |
e5c83d9b DS |
581 | pnhgc = hash_lookup(pbr_nhg_hash, &find); |
582 | ||
583 | nh = pbrms->nhg->nexthop; | |
aafac994 | 584 | nh_type = nh->type; |
734bf907 | 585 | lup.nexthop = *nh; |
e5c83d9b DS |
586 | pnhc = hash_lookup(pnhgc->nhh, &lup); |
587 | pnhc->parent = NULL; | |
588 | hash_release(pnhgc->nhh, pnhc); | |
589 | pbr_nh_delete(&pnhc); | |
aafac994 | 590 | pbr_nht_uninstall_nexthop_group(pnhgc, *pbrms->nhg, nh_type); |
e5c83d9b DS |
591 | |
592 | hash_release(pbr_nhg_hash, pnhgc); | |
1f375577 | 593 | pbr_nhgc_delete(pnhgc); |
e5c83d9b | 594 | |
e5c83d9b DS |
595 | nexthop_group_delete(&pbrms->nhg); |
596 | XFREE(MTYPE_TMP, pbrms->internal_nhg_name); | |
597 | } | |
598 | ||
f143cffa SW |
599 | void pbr_nht_delete_individual_nexthop(struct pbr_map_sequence *pbrms) |
600 | { | |
601 | pbr_map_delete_nexthops(pbrms); | |
602 | ||
603 | pbr_nht_release_individual_nexthop(pbrms); | |
604 | } | |
605 | ||
b13e5ad6 | 606 | struct pbr_nexthop_group_cache *pbr_nht_add_group(const char *name) |
e5c83d9b DS |
607 | { |
608 | struct nexthop *nhop; | |
609 | struct nexthop_group_cmd *nhgc; | |
610 | struct pbr_nexthop_group_cache *pnhgc; | |
611 | struct pbr_nexthop_group_cache lookup; | |
612 | ||
a4044dc1 QY |
613 | if (!pbr_nht_get_next_tableid(true)) { |
614 | zlog_warn( | |
615 | "%s: Exhausted all table identifiers; cannot create nexthop-group cache for nexthop-group '%s'", | |
5e81f5dd | 616 | __func__, name); |
a4044dc1 QY |
617 | return NULL; |
618 | } | |
619 | ||
e5c83d9b DS |
620 | nhgc = nhgc_find(name); |
621 | ||
622 | if (!nhgc) { | |
1d5453d6 | 623 | DEBUGD(&pbr_dbg_nht, "%s: Could not find nhgc with name: %s", |
5e81f5dd | 624 | __func__, name); |
b13e5ad6 | 625 | return NULL; |
e5c83d9b DS |
626 | } |
627 | ||
6612590d | 628 | snprintf(lookup.name, sizeof(lookup.name), "%s", name); |
e5c83d9b | 629 | pnhgc = hash_get(pbr_nhg_hash, &lookup, pbr_nhgc_alloc); |
5e81f5dd | 630 | DEBUGD(&pbr_dbg_nht, "%s: Retrieved NHGC @ %p", __func__, pnhgc); |
e5c83d9b DS |
631 | |
632 | for (ALL_NEXTHOPS(nhgc->nhg, nhop)) { | |
7fe96307 | 633 | struct pbr_nexthop_cache lookupc; |
e5c83d9b DS |
634 | struct pbr_nexthop_cache *pnhc; |
635 | ||
734bf907 | 636 | lookupc.nexthop = *nhop; |
7fe96307 | 637 | pnhc = hash_lookup(pnhgc->nhh, &lookupc); |
e5c83d9b | 638 | if (!pnhc) { |
7fe96307 | 639 | pnhc = hash_get(pnhgc->nhh, &lookupc, pbr_nh_alloc); |
e5c83d9b DS |
640 | pnhc->parent = pnhgc; |
641 | } | |
642 | } | |
b13e5ad6 DS |
643 | |
644 | return pnhgc; | |
e5c83d9b DS |
645 | } |
646 | ||
647 | void pbr_nht_delete_group(const char *name) | |
648 | { | |
649 | struct pbr_map_sequence *pbrms; | |
650 | struct listnode *snode; | |
651 | struct pbr_map *pbrm; | |
b13e5ad6 DS |
652 | struct pbr_nexthop_group_cache pnhgc_find; |
653 | struct pbr_nexthop_group_cache *pnhgc; | |
e5c83d9b DS |
654 | |
655 | RB_FOREACH (pbrm, pbr_map_entry_head, &pbr_maps) { | |
656 | for (ALL_LIST_ELEMENTS_RO(pbrm->seqnumbers, snode, pbrms)) { | |
657 | if (pbrms->nhgrp_name | |
b13e5ad6 | 658 | && strmatch(pbrms->nhgrp_name, name)) { |
e5c83d9b | 659 | pbrms->reason |= PBR_MAP_INVALID_NO_NEXTHOPS; |
b13e5ad6 DS |
660 | pbrms->nhg = NULL; |
661 | pbrms->internal_nhg_name = NULL; | |
e5c83d9b DS |
662 | pbrm->valid = false; |
663 | } | |
664 | } | |
665 | } | |
b13e5ad6 DS |
666 | |
667 | strlcpy(pnhgc_find.name, name, sizeof(pnhgc_find.name)); | |
668 | pnhgc = hash_release(pbr_nhg_hash, &pnhgc_find); | |
669 | pbr_nhgc_delete(pnhgc); | |
e5c83d9b DS |
670 | } |
671 | ||
672 | bool pbr_nht_nexthop_valid(struct nexthop_group *nhg) | |
673 | { | |
15569c58 | 674 | DEBUGD(&pbr_dbg_nht, "%s: %p", __func__, nhg); |
e5c83d9b DS |
675 | return true; |
676 | } | |
677 | ||
678 | bool pbr_nht_nexthop_group_valid(const char *name) | |
679 | { | |
680 | struct pbr_nexthop_group_cache *pnhgc; | |
681 | struct pbr_nexthop_group_cache lookup; | |
682 | ||
15569c58 | 683 | DEBUGD(&pbr_dbg_nht, "%s: %s", __func__, name); |
e5c83d9b | 684 | |
6612590d | 685 | snprintf(lookup.name, sizeof(lookup.name), "%s", name); |
e5c83d9b DS |
686 | pnhgc = hash_get(pbr_nhg_hash, &lookup, NULL); |
687 | if (!pnhgc) | |
688 | return false; | |
1d5453d6 | 689 | DEBUGD(&pbr_dbg_nht, "%s: %d %d", __func__, pnhgc->valid, |
e5c83d9b DS |
690 | pnhgc->installed); |
691 | if (pnhgc->valid && pnhgc->installed) | |
692 | return true; | |
693 | ||
694 | return false; | |
695 | } | |
696 | ||
697 | struct pbr_nht_individual { | |
698 | struct zapi_route *nhr; | |
a106a408 | 699 | struct interface *ifp; |
fcf29c69 DS |
700 | struct pbr_vrf *pbr_vrf; |
701 | struct pbr_nexthop_cache *pnhc; | |
9d961247 | 702 | vrf_id_t old_vrf_id; |
e5c83d9b | 703 | |
4bf97ce1 | 704 | bool valid; |
fcf29c69 DS |
705 | |
706 | bool nhr_matched; | |
e5c83d9b DS |
707 | }; |
708 | ||
8babeb1a SW |
709 | static bool |
710 | pbr_nht_individual_nexthop_gw_update(struct pbr_nexthop_cache *pnhc, | |
c59f754d | 711 | struct pbr_nht_individual *pnhi) |
e5c83d9b | 712 | { |
8babeb1a | 713 | bool is_valid = pnhc->valid; |
e5c83d9b | 714 | |
89527add DS |
715 | /* |
716 | * If we have an interface down event, let's note that | |
717 | * it is happening and find all the nexthops that depend | |
718 | * on that interface. As that if we have an interface | |
719 | * flapping fast enough it means that zebra might turn | |
720 | * those nexthop tracking events into a no-update | |
721 | * So let's search and do the right thing on the | |
722 | * interface event. | |
723 | */ | |
724 | if (!pnhi->nhr && pnhi->ifp) { | |
89527add DS |
725 | switch (pnhc->nexthop.type) { |
726 | case NEXTHOP_TYPE_BLACKHOLE: | |
e6b00e3f SW |
727 | case NEXTHOP_TYPE_IPV4: |
728 | case NEXTHOP_TYPE_IPV6: | |
729 | goto done; | |
89527add DS |
730 | case NEXTHOP_TYPE_IFINDEX: |
731 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
732 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
e6b00e3f SW |
733 | if (pnhc->nexthop.ifindex == pnhi->ifp->ifindex) |
734 | is_valid = if_is_up(pnhi->ifp); | |
735 | goto done; | |
89527add DS |
736 | } |
737 | ||
8babeb1a | 738 | goto done; |
89527add | 739 | } |
e5c83d9b | 740 | |
920bb6f7 DS |
741 | if (pnhi->nhr) { |
742 | switch (pnhi->nhr->prefix.family) { | |
743 | case AF_INET: | |
744 | if (pnhc->nexthop.gate.ipv4.s_addr | |
745 | != pnhi->nhr->prefix.u.prefix4.s_addr) | |
746 | goto done; /* Unrelated change */ | |
747 | break; | |
748 | case AF_INET6: | |
749 | if (memcmp(&pnhc->nexthop.gate.ipv6, | |
750 | &pnhi->nhr->prefix.u.prefix6, 16) | |
751 | != 0) | |
752 | goto done; /* Unrelated change */ | |
753 | break; | |
754 | } | |
8babeb1a SW |
755 | } |
756 | ||
c59f754d | 757 | pnhi->nhr_matched = true; |
8babeb1a SW |
758 | if (!pnhi->nhr->nexthop_num) { |
759 | is_valid = false; | |
760 | goto done; | |
761 | } | |
762 | ||
734bf907 DS |
763 | if (pnhc->nexthop.type == NEXTHOP_TYPE_IPV4_IFINDEX |
764 | || pnhc->nexthop.type == NEXTHOP_TYPE_IPV6_IFINDEX) { | |
8babeb1a SW |
765 | |
766 | /* GATEWAY_IFINDEX type shouldn't resolve to group */ | |
767 | if (pnhi->nhr->nexthop_num > 1) { | |
768 | is_valid = false; | |
769 | goto done; | |
770 | } | |
771 | ||
772 | /* If whatever we resolved to wasn't on the interface we | |
773 | * specified. (i.e. not a connected route), its invalid. | |
774 | */ | |
734bf907 | 775 | if (pnhi->nhr->nexthops[0].ifindex != pnhc->nexthop.ifindex) { |
8babeb1a SW |
776 | is_valid = false; |
777 | goto done; | |
778 | } | |
779 | } | |
780 | ||
781 | is_valid = true; | |
782 | ||
783 | done: | |
784 | pnhc->valid = is_valid; | |
785 | ||
786 | return pnhc->valid; | |
787 | } | |
788 | ||
c59f754d WC |
789 | static bool |
790 | pbr_nht_individual_nexthop_interface_update(struct pbr_nexthop_cache *pnhc, | |
791 | struct pbr_nht_individual *pnhi) | |
8babeb1a SW |
792 | { |
793 | bool is_valid = pnhc->valid; | |
794 | ||
795 | if (!pnhi->ifp) /* It doesn't care about non-interface updates */ | |
796 | goto done; | |
797 | ||
734bf907 | 798 | if (pnhc->nexthop.ifindex |
8babeb1a SW |
799 | != pnhi->ifp->ifindex) /* Un-related interface */ |
800 | goto done; | |
801 | ||
c59f754d | 802 | pnhi->nhr_matched = true; |
8babeb1a SW |
803 | is_valid = !!if_is_up(pnhi->ifp); |
804 | ||
805 | done: | |
806 | pnhc->valid = is_valid; | |
807 | ||
808 | return pnhc->valid; | |
809 | } | |
810 | ||
811 | /* Given this update either from interface or nexthop tracking, re-validate this | |
812 | * nexthop. | |
813 | * | |
814 | * If the update is un-related, the subroutines shoud just return their cached | |
815 | * valid state. | |
816 | */ | |
c59f754d WC |
817 | static void pbr_nht_individual_nexthop_update(struct pbr_nexthop_cache *pnhc, |
818 | struct pbr_nht_individual *pnhi) | |
8babeb1a SW |
819 | { |
820 | assert(pnhi->nhr || pnhi->ifp); /* Either nexthop or interface update */ | |
821 | ||
734bf907 | 822 | switch (pnhc->nexthop.type) { |
8babeb1a SW |
823 | case NEXTHOP_TYPE_IFINDEX: |
824 | pbr_nht_individual_nexthop_interface_update(pnhc, pnhi); | |
825 | break; | |
cb254f41 | 826 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
734bf907 | 827 | if (IN6_IS_ADDR_LINKLOCAL(&pnhc->nexthop.gate.ipv6)) { |
cb254f41 SW |
828 | pbr_nht_individual_nexthop_interface_update(pnhc, pnhi); |
829 | break; | |
830 | } | |
831 | /* Intentional fall thru */ | |
832 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
8babeb1a SW |
833 | case NEXTHOP_TYPE_IPV4: |
834 | case NEXTHOP_TYPE_IPV6: | |
8babeb1a SW |
835 | pbr_nht_individual_nexthop_gw_update(pnhc, pnhi); |
836 | break; | |
837 | case NEXTHOP_TYPE_BLACKHOLE: | |
838 | pnhc->valid = true; | |
e5c83d9b DS |
839 | break; |
840 | } | |
8babeb1a SW |
841 | } |
842 | ||
843 | static void pbr_nht_individual_nexthop_update_lookup(struct hash_bucket *b, | |
844 | void *data) | |
845 | { | |
846 | struct pbr_nexthop_cache *pnhc = b->data; | |
847 | struct pbr_nht_individual *pnhi = data; | |
8babeb1a SW |
848 | bool old_valid; |
849 | ||
850 | old_valid = pnhc->valid; | |
851 | ||
852 | pbr_nht_individual_nexthop_update(pnhc, pnhi); | |
e5c83d9b | 853 | |
1d5453d6 | 854 | DEBUGD(&pbr_dbg_nht, " Found %pFX: old: %d new: %d", |
2dbe669b | 855 | &pnhi->nhr->prefix, old_valid, pnhc->valid); |
e5c83d9b | 856 | |
e5c83d9b | 857 | if (pnhc->valid) |
4bf97ce1 | 858 | pnhi->valid = true; |
e5c83d9b DS |
859 | } |
860 | ||
b822b93a SW |
861 | static void pbr_nexthop_group_cache_iterate_to_group(struct hash_bucket *b, |
862 | void *data) | |
863 | { | |
864 | struct pbr_nexthop_cache *pnhc = b->data; | |
865 | struct nexthop_group *nhg = data; | |
866 | struct nexthop *nh = NULL; | |
867 | ||
734bf907 | 868 | copy_nexthops(&nh, &pnhc->nexthop, NULL); |
b822b93a | 869 | |
50d89650 | 870 | _nexthop_add(&nhg->nexthop, nh); |
b822b93a SW |
871 | } |
872 | ||
873 | static void | |
874 | pbr_nexthop_group_cache_to_nexthop_group(struct nexthop_group *nhg, | |
875 | struct pbr_nexthop_group_cache *pnhgc) | |
876 | { | |
877 | hash_iterate(pnhgc->nhh, pbr_nexthop_group_cache_iterate_to_group, nhg); | |
878 | } | |
879 | ||
e3b78da8 | 880 | static void pbr_nht_nexthop_update_lookup(struct hash_bucket *b, void *data) |
e5c83d9b DS |
881 | { |
882 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
8babeb1a | 883 | struct pbr_nht_individual pnhi = {}; |
b822b93a | 884 | struct nexthop_group nhg = {}; |
b13e5ad6 DS |
885 | bool old_valid; |
886 | ||
887 | old_valid = pnhgc->valid; | |
e5c83d9b DS |
888 | |
889 | pnhi.nhr = (struct zapi_route *)data; | |
4bf97ce1 | 890 | pnhi.valid = false; |
c59f754d | 891 | pnhi.nhr_matched = false; |
e5c83d9b DS |
892 | hash_iterate(pnhgc->nhh, pbr_nht_individual_nexthop_update_lookup, |
893 | &pnhi); | |
894 | ||
c59f754d WC |
895 | if (!pnhi.nhr_matched) |
896 | return; | |
897 | ||
e5c83d9b DS |
898 | /* |
899 | * If any of the specified nexthops are valid we are valid | |
900 | */ | |
901 | pnhgc->valid = !!pnhi.valid; | |
b13e5ad6 | 902 | |
6db1188f SW |
903 | pbr_nexthop_group_cache_to_nexthop_group(&nhg, pnhgc); |
904 | ||
905 | if (pnhgc->valid) | |
b822b93a | 906 | pbr_nht_install_nexthop_group(pnhgc, nhg); |
6db1188f SW |
907 | else |
908 | pbr_nht_uninstall_nexthop_group(pnhgc, nhg, 0); | |
909 | ||
910 | /* Don't need copied nexthops anymore */ | |
911 | nexthops_free(nhg.nexthop); | |
b822b93a | 912 | |
b13e5ad6 DS |
913 | if (old_valid != pnhgc->valid) |
914 | pbr_map_check_nh_group_change(pnhgc->name); | |
e5c83d9b DS |
915 | } |
916 | ||
917 | void pbr_nht_nexthop_update(struct zapi_route *nhr) | |
918 | { | |
919 | hash_iterate(pbr_nhg_hash, pbr_nht_nexthop_update_lookup, nhr); | |
920 | } | |
921 | ||
9d961247 DS |
922 | struct nhrc_vrf_info { |
923 | struct pbr_vrf *pbr_vrf; | |
924 | uint32_t old_vrf_id; | |
925 | struct nhrc *nhrc; | |
926 | }; | |
927 | ||
928 | static int pbr_nht_nhrc_vrf_change(struct hash_bucket *b, void *data) | |
929 | { | |
930 | struct nhrc *nhrc = b->data; | |
931 | struct nhrc_vrf_info *nhrcvi = data; | |
932 | ||
933 | if (nhrc->nexthop.vrf_id == nhrcvi->old_vrf_id) { | |
934 | nhrcvi->nhrc = nhrc; | |
935 | return HASHWALK_ABORT; | |
936 | } | |
937 | ||
938 | return HASHWALK_CONTINUE; | |
939 | } | |
940 | ||
941 | static int pbr_nht_individual_nexthop_vrf_handle(struct hash_bucket *b, | |
942 | void *data) | |
fcf29c69 DS |
943 | { |
944 | struct pbr_nexthop_cache *pnhc = b->data; | |
945 | struct pbr_nht_individual *pnhi = data; | |
946 | ||
9d961247 DS |
947 | if (pnhc->looked_at == true) |
948 | return HASHWALK_CONTINUE; | |
949 | ||
734bf907 | 950 | if (pnhc->nexthop.vrf_id == VRF_DEFAULT) |
9d961247 | 951 | return HASHWALK_CONTINUE; |
fcf29c69 | 952 | |
9d961247 DS |
953 | if (strncmp(pnhc->vrf_name, pbr_vrf_name(pnhi->pbr_vrf), |
954 | sizeof(pnhc->vrf_name)) | |
955 | == 0) { | |
fcf29c69 | 956 | pnhi->pnhc = pnhc; |
9d961247 | 957 | |
734bf907 | 958 | if (pnhc->nexthop.vrf_id != pbr_vrf_id(pnhi->pbr_vrf)) { |
9d961247 DS |
959 | struct nhrc_vrf_info nhrcvi; |
960 | ||
961 | memset(&nhrcvi, 0, sizeof(nhrcvi)); | |
962 | nhrcvi.pbr_vrf = pnhi->pbr_vrf; | |
734bf907 | 963 | nhrcvi.old_vrf_id = pnhc->nexthop.vrf_id; |
9d961247 DS |
964 | |
965 | pnhi->nhr_matched = true; | |
734bf907 | 966 | pnhi->old_vrf_id = pnhc->nexthop.vrf_id; |
9d961247 DS |
967 | |
968 | do { | |
969 | nhrcvi.nhrc = NULL; | |
970 | hash_walk(pbr_nhrc_hash, | |
971 | pbr_nht_nhrc_vrf_change, &nhrcvi); | |
972 | if (nhrcvi.nhrc) { | |
973 | hash_release(pbr_nhrc_hash, | |
974 | nhrcvi.nhrc); | |
975 | nhrcvi.nhrc->nexthop.vrf_id = | |
976 | pbr_vrf_id(pnhi->pbr_vrf); | |
977 | hash_get(pbr_nhrc_hash, nhrcvi.nhrc, | |
978 | hash_alloc_intern); | |
979 | pbr_send_rnh(&nhrcvi.nhrc->nexthop, true); | |
980 | } | |
981 | } while (nhrcvi.nhrc); | |
982 | } | |
983 | ||
984 | pnhc->looked_at = true; | |
985 | return HASHWALK_ABORT; | |
fcf29c69 | 986 | } |
9d961247 DS |
987 | |
988 | return HASHWALK_CONTINUE; | |
989 | } | |
990 | ||
991 | static void pbr_nht_clear_looked_at(struct hash_bucket *b, void *data) | |
992 | { | |
993 | struct pbr_nexthop_cache *pnhc = b->data; | |
994 | ||
995 | pnhc->looked_at = false; | |
fcf29c69 DS |
996 | } |
997 | ||
998 | static void pbr_nht_nexthop_vrf_handle(struct hash_bucket *b, void *data) | |
999 | { | |
1000 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
1001 | struct pbr_vrf *pbr_vrf = data; | |
1002 | struct pbr_nht_individual pnhi = {}; | |
fcf29c69 | 1003 | |
9d961247 DS |
1004 | hash_iterate(pnhgc->nhh, pbr_nht_clear_looked_at, NULL); |
1005 | memset(&pnhi, 0, sizeof(pnhi)); | |
1006 | pnhi.pbr_vrf = pbr_vrf; | |
fcf29c69 | 1007 | do { |
9d961247 DS |
1008 | struct pbr_nexthop_cache *pnhc; |
1009 | ||
1010 | pnhi.pnhc = NULL; | |
1011 | hash_walk(pnhgc->nhh, pbr_nht_individual_nexthop_vrf_handle, | |
1012 | &pnhi); | |
fcf29c69 DS |
1013 | |
1014 | if (!pnhi.pnhc) | |
1015 | continue; | |
1016 | ||
9d961247 | 1017 | pnhc = pnhi.pnhc; |
734bf907 | 1018 | pnhc->nexthop.vrf_id = pnhi.old_vrf_id; |
fcf29c69 | 1019 | pnhi.pnhc = hash_release(pnhgc->nhh, pnhi.pnhc); |
9d961247 | 1020 | if (pnhi.pnhc) { |
734bf907 | 1021 | pnhi.pnhc->nexthop.vrf_id = pbr_vrf_id(pbr_vrf); |
fcf29c69 | 1022 | |
9d961247 DS |
1023 | hash_get(pnhgc->nhh, pnhi.pnhc, hash_alloc_intern); |
1024 | } else | |
734bf907 | 1025 | pnhc->nexthop.vrf_id = pbr_vrf_id(pbr_vrf); |
fcf29c69 DS |
1026 | |
1027 | pbr_map_check_vrf_nh_group_change(pnhgc->name, pbr_vrf, | |
9d961247 | 1028 | pnhi.old_vrf_id); |
fcf29c69 DS |
1029 | } while (pnhi.pnhc); |
1030 | } | |
1031 | ||
1032 | void pbr_nht_vrf_update(struct pbr_vrf *pbr_vrf) | |
1033 | { | |
1034 | hash_iterate(pbr_nhg_hash, pbr_nht_nexthop_vrf_handle, pbr_vrf); | |
1035 | } | |
1036 | ||
7cbdabff DS |
1037 | static void pbr_nht_individual_nexthop_interface_handle(struct hash_bucket *b, |
1038 | void *data) | |
1039 | { | |
1040 | struct pbr_nexthop_cache *pnhc = b->data; | |
1041 | struct pbr_nht_individual *pnhi = data; | |
1042 | ||
734bf907 | 1043 | if (pnhc->nexthop.ifindex == 0) |
7cbdabff DS |
1044 | return; |
1045 | ||
1046 | if ((strncmp(pnhc->intf_name, pnhi->ifp->name, sizeof(pnhc->intf_name)) | |
1047 | == 0) | |
734bf907 | 1048 | && pnhc->nexthop.ifindex != pnhi->ifp->ifindex) |
7cbdabff DS |
1049 | pnhi->pnhc = pnhc; |
1050 | } | |
1051 | ||
1052 | static void pbr_nht_nexthop_interface_handle(struct hash_bucket *b, void *data) | |
1053 | { | |
1054 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
1055 | struct interface *ifp = data; | |
1056 | struct pbr_nht_individual pnhi = {}; | |
1057 | struct nhrc *nhrc; | |
1058 | uint32_t old_ifindex; | |
1059 | ||
1060 | do { | |
1061 | memset(&pnhi, 0, sizeof(pnhi)); | |
1062 | pnhi.ifp = ifp; | |
1063 | hash_iterate(pnhgc->nhh, | |
1064 | pbr_nht_individual_nexthop_interface_handle, | |
1065 | &pnhi); | |
1066 | ||
1067 | if (!pnhi.pnhc) | |
1068 | continue; | |
1069 | ||
1070 | pnhi.pnhc = hash_release(pnhgc->nhh, pnhi.pnhc); | |
734bf907 | 1071 | old_ifindex = pnhi.pnhc->nexthop.ifindex; |
7cbdabff | 1072 | |
734bf907 | 1073 | nhrc = hash_lookup(pbr_nhrc_hash, &pnhi.pnhc->nexthop); |
7cbdabff DS |
1074 | if (nhrc) { |
1075 | hash_release(pbr_nhrc_hash, nhrc); | |
1076 | nhrc->nexthop.ifindex = ifp->ifindex; | |
1077 | hash_get(pbr_nhrc_hash, nhrc, hash_alloc_intern); | |
1078 | } | |
734bf907 | 1079 | pnhi.pnhc->nexthop.ifindex = ifp->ifindex; |
7cbdabff DS |
1080 | |
1081 | hash_get(pnhgc->nhh, pnhi.pnhc, hash_alloc_intern); | |
1082 | ||
1083 | pbr_map_check_interface_nh_group_change(pnhgc->name, ifp, | |
1084 | old_ifindex); | |
1085 | } while (pnhi.pnhc); | |
1086 | } | |
1087 | ||
1088 | void pbr_nht_interface_update(struct interface *ifp) | |
1089 | { | |
1090 | hash_iterate(pbr_nhg_hash, pbr_nht_nexthop_interface_handle, ifp); | |
1091 | } | |
1092 | ||
a106a408 | 1093 | static void |
7f5818fb | 1094 | pbr_nht_individual_nexthop_interface_update_lookup(struct hash_bucket *b, |
a106a408 RW |
1095 | void *data) |
1096 | { | |
1097 | struct pbr_nexthop_cache *pnhc = b->data; | |
1098 | struct pbr_nht_individual *pnhi = data; | |
1099 | bool old_valid; | |
1100 | ||
1101 | old_valid = pnhc->valid; | |
1102 | ||
8babeb1a | 1103 | pbr_nht_individual_nexthop_update(pnhc, pnhi); |
a106a408 | 1104 | |
1d5453d6 | 1105 | DEBUGD(&pbr_dbg_nht, " Found %s: old: %d new: %d", pnhi->ifp->name, |
a106a408 RW |
1106 | old_valid, pnhc->valid); |
1107 | ||
1108 | if (pnhc->valid) | |
4bf97ce1 | 1109 | pnhi->valid = true; |
a106a408 RW |
1110 | } |
1111 | ||
7f5818fb | 1112 | static void pbr_nht_nexthop_interface_update_lookup(struct hash_bucket *b, |
a106a408 RW |
1113 | void *data) |
1114 | { | |
1115 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
8babeb1a | 1116 | struct pbr_nht_individual pnhi = {}; |
89527add | 1117 | struct nexthop_group nhg = {}; |
a106a408 RW |
1118 | bool old_valid; |
1119 | ||
1120 | old_valid = pnhgc->valid; | |
1121 | ||
1122 | pnhi.ifp = data; | |
4bf97ce1 | 1123 | pnhi.valid = false; |
a106a408 RW |
1124 | hash_iterate(pnhgc->nhh, |
1125 | pbr_nht_individual_nexthop_interface_update_lookup, &pnhi); | |
1126 | ||
1127 | /* | |
1128 | * If any of the specified nexthops are valid we are valid | |
1129 | */ | |
4bf97ce1 | 1130 | pnhgc->valid = pnhi.valid; |
a106a408 | 1131 | |
89527add DS |
1132 | pbr_nexthop_group_cache_to_nexthop_group(&nhg, pnhgc); |
1133 | ||
1134 | if (pnhgc->valid) | |
1135 | pbr_nht_install_nexthop_group(pnhgc, nhg); | |
1136 | else | |
1137 | pbr_nht_uninstall_nexthop_group(pnhgc, nhg, 0); | |
1138 | ||
1139 | nexthops_free(nhg.nexthop); | |
1140 | ||
a106a408 RW |
1141 | if (old_valid != pnhgc->valid) |
1142 | pbr_map_check_nh_group_change(pnhgc->name); | |
1143 | } | |
1144 | ||
1145 | void pbr_nht_nexthop_interface_update(struct interface *ifp) | |
1146 | { | |
1147 | hash_iterate(pbr_nhg_hash, pbr_nht_nexthop_interface_update_lookup, | |
1148 | ifp); | |
1149 | } | |
1150 | ||
d8b87afe | 1151 | static uint32_t pbr_nhg_hash_key(const void *arg) |
e5c83d9b | 1152 | { |
d8b87afe | 1153 | const struct pbr_nexthop_group_cache *nhgc = arg; |
e5c83d9b DS |
1154 | |
1155 | return jhash(&nhgc->name, strlen(nhgc->name), 0x52c34a96); | |
1156 | } | |
1157 | ||
74df8d6d | 1158 | static bool pbr_nhg_hash_equal(const void *arg1, const void *arg2) |
e5c83d9b DS |
1159 | { |
1160 | const struct pbr_nexthop_group_cache *nhgc1 = | |
1161 | (const struct pbr_nexthop_group_cache *)arg1; | |
1162 | const struct pbr_nexthop_group_cache *nhgc2 = | |
1163 | (const struct pbr_nexthop_group_cache *)arg2; | |
1164 | ||
1165 | return !strcmp(nhgc1->name, nhgc2->name); | |
1166 | } | |
1167 | ||
a4044dc1 | 1168 | uint32_t pbr_nht_get_next_tableid(bool peek) |
e5c83d9b DS |
1169 | { |
1170 | uint32_t i; | |
1171 | bool found = false; | |
1172 | ||
1173 | for (i = pbr_nhg_low_table; i <= pbr_nhg_high_table; i++) { | |
d8729f8c | 1174 | if (!nhg_tableid[i]) { |
e5c83d9b DS |
1175 | found = true; |
1176 | break; | |
1177 | } | |
1178 | } | |
1179 | ||
1180 | if (found) { | |
a4044dc1 | 1181 | nhg_tableid[i] = !peek; |
e5c83d9b DS |
1182 | return i; |
1183 | } else | |
1184 | return 0; | |
1185 | } | |
1186 | ||
1187 | void pbr_nht_set_tableid_range(uint32_t low, uint32_t high) | |
1188 | { | |
1189 | pbr_nhg_low_table = low; | |
1190 | pbr_nhg_high_table = high; | |
1191 | } | |
1192 | ||
1193 | void pbr_nht_write_table_range(struct vty *vty) | |
1194 | { | |
1195 | if (pbr_nhg_low_table != PBR_NHT_DEFAULT_LOW_TABLEID | |
1196 | || pbr_nhg_high_table != PBR_NHT_DEFAULT_HIGH_TABLEID) { | |
1197 | vty_out(vty, "pbr table range %u %u\n", pbr_nhg_low_table, | |
1198 | pbr_nhg_high_table); | |
1199 | } | |
1200 | } | |
1201 | ||
1202 | uint32_t pbr_nht_get_next_rule(uint32_t seqno) | |
1203 | { | |
1204 | return seqno + pbr_nhg_low_rule - 1; | |
1205 | } | |
1206 | void pbr_nht_set_rule_range(uint32_t low, uint32_t high) | |
1207 | { | |
1208 | pbr_nhg_low_rule = low; | |
1209 | pbr_nhg_high_rule = high; | |
1210 | } | |
1211 | ||
1212 | void pbr_nht_write_rule_range(struct vty *vty) | |
1213 | { | |
1214 | if (pbr_nhg_low_rule != PBR_NHT_DEFAULT_LOW_RULE | |
1215 | || pbr_nhg_high_rule != PBR_NHT_DEFAULT_HIGH_RULE) { | |
1216 | vty_out(vty, "pbr rule range %u %u\n", pbr_nhg_low_rule, | |
1217 | pbr_nhg_high_rule); | |
1218 | } | |
1219 | } | |
1220 | ||
1221 | uint32_t pbr_nht_get_table(const char *name) | |
1222 | { | |
1223 | struct pbr_nexthop_group_cache find; | |
1224 | struct pbr_nexthop_group_cache *pnhgc; | |
1225 | ||
1226 | memset(&find, 0, sizeof(find)); | |
6612590d | 1227 | snprintf(find.name, sizeof(find.name), "%s", name); |
e5c83d9b DS |
1228 | pnhgc = hash_lookup(pbr_nhg_hash, &find); |
1229 | ||
1230 | if (!pnhgc) { | |
1231 | DEBUGD(&pbr_dbg_nht, | |
1232 | "%s: Could not find nexthop-group cache w/ name '%s'", | |
15569c58 | 1233 | __func__, name); |
e5c83d9b DS |
1234 | return 5000; |
1235 | } | |
1236 | ||
1237 | return pnhgc->table_id; | |
1238 | } | |
1239 | ||
1240 | bool pbr_nht_get_installed(const char *name) | |
1241 | { | |
1242 | struct pbr_nexthop_group_cache find; | |
1243 | struct pbr_nexthop_group_cache *pnhgc; | |
1244 | ||
1245 | memset(&find, 0, sizeof(find)); | |
6612590d | 1246 | snprintf(find.name, sizeof(find.name), "%s", name); |
e5c83d9b DS |
1247 | |
1248 | pnhgc = hash_lookup(pbr_nhg_hash, &find); | |
1249 | ||
d3765386 | 1250 | if (!pnhgc) |
e5c83d9b | 1251 | return false; |
e5c83d9b DS |
1252 | |
1253 | return pnhgc->installed; | |
1254 | } | |
1255 | ||
e3b78da8 | 1256 | static void pbr_nht_show_nhg_nexthops(struct hash_bucket *b, void *data) |
e5c83d9b DS |
1257 | { |
1258 | struct pbr_nexthop_cache *pnhc = b->data; | |
1259 | struct vty *vty = data; | |
1260 | ||
57cdafc4 | 1261 | vty_out(vty, "\tValid: %d ", pnhc->valid); |
734bf907 | 1262 | nexthop_group_write_nexthop(vty, &pnhc->nexthop); |
e5c83d9b DS |
1263 | } |
1264 | ||
010dd8ed WC |
1265 | static void pbr_nht_json_nhg_nexthops(struct hash_bucket *b, void *data) |
1266 | { | |
1267 | struct pbr_nexthop_cache *pnhc = b->data; | |
1268 | json_object *all_hops = data; | |
1269 | json_object *this_hop; | |
1270 | ||
1271 | this_hop = json_object_new_object(); | |
734bf907 | 1272 | nexthop_group_json_nexthop(this_hop, &pnhc->nexthop); |
3e81618d | 1273 | json_object_boolean_add(this_hop, "valid", pnhc->valid); |
010dd8ed WC |
1274 | |
1275 | json_object_array_add(all_hops, this_hop); | |
1276 | } | |
1277 | ||
e5c83d9b DS |
1278 | struct pbr_nht_show { |
1279 | struct vty *vty; | |
010dd8ed | 1280 | json_object *json; |
e5c83d9b DS |
1281 | const char *name; |
1282 | }; | |
1283 | ||
e3b78da8 | 1284 | static void pbr_nht_show_nhg(struct hash_bucket *b, void *data) |
e5c83d9b DS |
1285 | { |
1286 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
1287 | struct pbr_nht_show *pns = data; | |
1288 | struct vty *vty; | |
1289 | ||
1290 | if (pns->name && strcmp(pns->name, pnhgc->name) != 0) | |
1291 | return; | |
1292 | ||
1293 | vty = pns->vty; | |
1294 | vty_out(vty, "Nexthop-Group: %s Table: %u Valid: %d Installed: %d\n", | |
1295 | pnhgc->name, pnhgc->table_id, pnhgc->valid, pnhgc->installed); | |
1296 | ||
1297 | hash_iterate(pnhgc->nhh, pbr_nht_show_nhg_nexthops, vty); | |
1298 | } | |
1299 | ||
010dd8ed WC |
1300 | static void pbr_nht_json_nhg(struct hash_bucket *b, void *data) |
1301 | { | |
1302 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
1303 | struct pbr_nht_show *pns = data; | |
1304 | json_object *j, *this_group, *group_hops; | |
1305 | ||
1306 | if (pns->name && strcmp(pns->name, pnhgc->name) != 0) | |
1307 | return; | |
1308 | ||
1309 | j = pns->json; | |
1310 | this_group = json_object_new_object(); | |
1311 | ||
1312 | if (!j || !this_group) | |
1313 | return; | |
1314 | ||
010dd8ed | 1315 | json_object_int_add(this_group, "id", pnhgc->table_id); |
81c0078e | 1316 | json_object_string_add(this_group, "name", pnhgc->name); |
3e81618d WC |
1317 | json_object_boolean_add(this_group, "valid", pnhgc->valid); |
1318 | json_object_boolean_add(this_group, "installed", pnhgc->installed); | |
010dd8ed WC |
1319 | |
1320 | group_hops = json_object_new_array(); | |
1321 | ||
1322 | if (group_hops) { | |
1323 | hash_iterate(pnhgc->nhh, pbr_nht_json_nhg_nexthops, group_hops); | |
1324 | json_object_object_add(this_group, "nexthops", group_hops); | |
1325 | } | |
1326 | ||
dadba1a2 | 1327 | json_object_array_add(j, this_group); |
010dd8ed WC |
1328 | } |
1329 | ||
e5c83d9b DS |
1330 | void pbr_nht_show_nexthop_group(struct vty *vty, const char *name) |
1331 | { | |
1332 | struct pbr_nht_show pns; | |
1333 | ||
1334 | pns.vty = vty; | |
1335 | pns.name = name; | |
1336 | ||
1337 | hash_iterate(pbr_nhg_hash, pbr_nht_show_nhg, &pns); | |
1338 | } | |
1339 | ||
010dd8ed WC |
1340 | void pbr_nht_json_nexthop_group(json_object *j, const char *name) |
1341 | { | |
1342 | struct pbr_nht_show pns; | |
1343 | ||
1344 | pns.name = name; | |
1345 | pns.json = j; | |
1346 | ||
1347 | hash_iterate(pbr_nhg_hash, pbr_nht_json_nhg, &pns); | |
1348 | } | |
1349 | ||
e5c83d9b DS |
1350 | void pbr_nht_init(void) |
1351 | { | |
1352 | pbr_nhg_hash = hash_create_size( | |
1353 | 16, pbr_nhg_hash_key, pbr_nhg_hash_equal, "PBR NHG Cache Hash"); | |
b13e5ad6 | 1354 | pbr_nhrc_hash = |
d8b87afe | 1355 | hash_create_size(16, (unsigned int (*)(const void *))nexthop_hash, |
b13e5ad6 | 1356 | pbr_nhrc_hash_equal, "PBR NH Hash"); |
e5c83d9b DS |
1357 | |
1358 | pbr_nhg_low_table = PBR_NHT_DEFAULT_LOW_TABLEID; | |
1359 | pbr_nhg_high_table = PBR_NHT_DEFAULT_HIGH_TABLEID; | |
1360 | pbr_nhg_low_rule = PBR_NHT_DEFAULT_LOW_RULE; | |
1361 | pbr_nhg_high_rule = PBR_NHT_DEFAULT_HIGH_RULE; | |
1362 | memset(&nhg_tableid, 0, 65535 * sizeof(uint8_t)); | |
1363 | } |