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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) { | |
216 | DEBUGD(&pbr_dbg_nht, "%s: Could not find nhgc with name: %s\n", | |
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 | ||
323 | #if 0 | |
324 | static struct pbr_nexthop_cache *pbr_nht_lookup_nexthop(struct nexthop *nexthop) | |
325 | { | |
326 | return NULL; | |
327 | } | |
328 | #endif | |
329 | ||
09813729 SW |
330 | static void |
331 | pbr_nht_find_nhg_from_table_update(struct pbr_nexthop_group_cache *pnhgc, | |
332 | uint32_t table_id, bool installed) | |
333 | { | |
334 | if (pnhgc->table_id == table_id) { | |
335 | DEBUGD(&pbr_dbg_nht, "%s: %s: Table ID (%u) matches %s", | |
336 | __func__, (installed ? "install" : "remove"), table_id, | |
337 | pnhgc->name); | |
338 | ||
339 | pnhgc->installed = installed; | |
340 | pnhgc->valid = installed; | |
341 | pbr_map_schedule_policy_from_nhg(pnhgc->name, pnhgc->installed); | |
342 | } | |
343 | } | |
344 | ||
e3b78da8 | 345 | static void pbr_nht_find_nhg_from_table_install(struct hash_bucket *b, |
e5c83d9b DS |
346 | void *data) |
347 | { | |
348 | struct pbr_nexthop_group_cache *pnhgc = | |
349 | (struct pbr_nexthop_group_cache *)b->data; | |
09813729 SW |
350 | uint32_t table_id = *(uint32_t *)data; |
351 | ||
352 | pbr_nht_find_nhg_from_table_update(pnhgc, table_id, true); | |
e5c83d9b DS |
353 | } |
354 | ||
355 | void pbr_nht_route_installed_for_table(uint32_t table_id) | |
356 | { | |
357 | hash_iterate(pbr_nhg_hash, pbr_nht_find_nhg_from_table_install, | |
358 | &table_id); | |
359 | } | |
360 | ||
e3b78da8 | 361 | static void pbr_nht_find_nhg_from_table_remove(struct hash_bucket *b, |
e5c83d9b DS |
362 | void *data) |
363 | { | |
09813729 SW |
364 | struct pbr_nexthop_group_cache *pnhgc = |
365 | (struct pbr_nexthop_group_cache *)b->data; | |
366 | uint32_t table_id = *(uint32_t *)data; | |
367 | ||
368 | pbr_nht_find_nhg_from_table_update(pnhgc, table_id, false); | |
e5c83d9b DS |
369 | } |
370 | ||
371 | void pbr_nht_route_removed_for_table(uint32_t table_id) | |
372 | { | |
373 | hash_iterate(pbr_nhg_hash, pbr_nht_find_nhg_from_table_remove, | |
374 | &table_id); | |
375 | } | |
376 | ||
377 | /* | |
378 | * Loop through all nexthops in a nexthop group to check that they are all the | |
379 | * same. If they are not all the same, log this peculiarity. | |
380 | * | |
381 | * nhg | |
382 | * The nexthop group to check | |
383 | * | |
384 | * Returns: | |
385 | * - AFI of last nexthop in the group | |
386 | * - AFI_MAX on error | |
387 | */ | |
ff9799c3 | 388 | static afi_t pbr_nht_which_afi(struct nexthop_group nhg, |
aafac994 | 389 | enum nexthop_types_t nh_type) |
e5c83d9b DS |
390 | { |
391 | struct nexthop *nexthop; | |
392 | afi_t install_afi = AFI_MAX; | |
393 | bool v6, v4, bh; | |
d3765386 | 394 | |
268c24ee RW |
395 | if (nh_type) { |
396 | switch (nh_type) { | |
397 | case NEXTHOP_TYPE_IPV4: | |
398 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
399 | return AFI_IP; | |
400 | case NEXTHOP_TYPE_IPV6: | |
401 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
402 | return AFI_IP6; | |
403 | case NEXTHOP_TYPE_IFINDEX: | |
404 | case NEXTHOP_TYPE_BLACKHOLE: | |
405 | return AFI_MAX; | |
406 | } | |
407 | } | |
408 | ||
e5c83d9b DS |
409 | v6 = v4 = bh = false; |
410 | ||
268c24ee RW |
411 | for (ALL_NEXTHOPS(nhg, nexthop)) { |
412 | nh_type = nexthop->type; | |
413 | ||
414 | switch (nh_type) { | |
415 | case NEXTHOP_TYPE_IFINDEX: | |
416 | break; | |
417 | case NEXTHOP_TYPE_IPV4: | |
418 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
419 | v6 = true; | |
420 | install_afi = AFI_IP; | |
421 | break; | |
422 | case NEXTHOP_TYPE_IPV6: | |
423 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
424 | v4 = true; | |
425 | install_afi = AFI_IP6; | |
426 | break; | |
427 | case NEXTHOP_TYPE_BLACKHOLE: | |
428 | bh = true; | |
e5c83d9b DS |
429 | break; |
430 | } | |
431 | } | |
432 | ||
268c24ee RW |
433 | /* Interface and/or blackhole nexthops only. */ |
434 | if (!v4 && !v6) | |
ff9799c3 | 435 | install_afi = AFI_MAX; |
ff9799c3 | 436 | |
e5c83d9b DS |
437 | if (!bh && v6 && v4) |
438 | DEBUGD(&pbr_dbg_nht, | |
5e81f5dd DS |
439 | "%s: Saw both V6 and V4 nexthops...using %s", __func__, |
440 | afi2str(install_afi)); | |
e5c83d9b DS |
441 | if (bh && (v6 || v4)) |
442 | DEBUGD(&pbr_dbg_nht, | |
443 | "%s: Saw blackhole nexthop(s) with %s%s%s nexthop(s), using AFI_MAX.", | |
5e81f5dd DS |
444 | __func__, v4 ? "v4" : "", (v4 && v6) ? " and " : "", |
445 | v6 ? "v6" : ""); | |
e5c83d9b DS |
446 | |
447 | return install_afi; | |
448 | } | |
449 | ||
450 | static void pbr_nht_install_nexthop_group(struct pbr_nexthop_group_cache *pnhgc, | |
451 | struct nexthop_group nhg) | |
452 | { | |
453 | afi_t install_afi; | |
aafac994 | 454 | enum nexthop_types_t nh_type = 0; |
e5c83d9b | 455 | |
aafac994 | 456 | install_afi = pbr_nht_which_afi(nhg, nh_type); |
e5c83d9b | 457 | |
e5c83d9b DS |
458 | route_add(pnhgc, nhg, install_afi); |
459 | } | |
460 | ||
461 | static void | |
462 | pbr_nht_uninstall_nexthop_group(struct pbr_nexthop_group_cache *pnhgc, | |
ff9799c3 | 463 | struct nexthop_group nhg, |
aafac994 | 464 | enum nexthop_types_t nh_type) |
e5c83d9b DS |
465 | { |
466 | afi_t install_afi; | |
467 | ||
aafac994 | 468 | install_afi = pbr_nht_which_afi(nhg, nh_type); |
e5c83d9b DS |
469 | |
470 | pnhgc->installed = false; | |
471 | pnhgc->valid = false; | |
472 | route_delete(pnhgc, install_afi); | |
473 | } | |
474 | ||
475 | void pbr_nht_change_group(const char *name) | |
476 | { | |
477 | struct nexthop_group_cmd *nhgc; | |
478 | struct pbr_nexthop_group_cache *pnhgc; | |
479 | struct pbr_nexthop_group_cache find; | |
480 | struct nexthop *nhop; | |
481 | ||
482 | nhgc = nhgc_find(name); | |
483 | if (!nhgc) | |
484 | return; | |
485 | ||
486 | memset(&find, 0, sizeof(find)); | |
6612590d | 487 | snprintf(find.name, sizeof(find.name), "%s", name); |
e5c83d9b DS |
488 | pnhgc = hash_lookup(pbr_nhg_hash, &find); |
489 | ||
490 | if (!pnhgc) { | |
491 | DEBUGD(&pbr_dbg_nht, | |
492 | "%s: Could not find nexthop-group cache w/ name '%s'", | |
5e81f5dd | 493 | __func__, name); |
e5c83d9b DS |
494 | return; |
495 | } | |
496 | ||
497 | for (ALL_NEXTHOPS(nhgc->nhg, nhop)) { | |
498 | struct pbr_nexthop_cache lookup; | |
499 | struct pbr_nexthop_cache *pnhc; | |
500 | ||
734bf907 | 501 | lookup.nexthop = *nhop; |
e5c83d9b DS |
502 | pnhc = hash_lookup(pnhgc->nhh, &lookup); |
503 | if (!pnhc) { | |
504 | pnhc = hash_get(pnhgc->nhh, &lookup, pbr_nh_alloc); | |
505 | pnhc->parent = pnhgc; | |
506 | } | |
507 | } | |
508 | pbr_nht_install_nexthop_group(pnhgc, nhgc->nhg); | |
509 | } | |
510 | ||
511 | char *pbr_nht_nexthop_make_name(char *name, size_t l, | |
512 | uint32_t seqno, char *buffer) | |
513 | { | |
514 | snprintf(buffer, l, "%s%u", name, seqno); | |
515 | return buffer; | |
516 | } | |
517 | ||
f143cffa SW |
518 | void pbr_nht_add_individual_nexthop(struct pbr_map_sequence *pbrms, |
519 | const struct nexthop *nhop) | |
e5c83d9b DS |
520 | { |
521 | struct pbr_nexthop_group_cache *pnhgc; | |
522 | struct pbr_nexthop_group_cache find; | |
523 | struct pbr_nexthop_cache *pnhc; | |
e5c83d9b | 524 | struct pbr_nexthop_cache lookup; |
f143cffa SW |
525 | struct nexthop *nh; |
526 | char buf[PBR_NHC_NAMELEN]; | |
527 | ||
528 | pbrms->nhg = nexthop_group_new(); | |
529 | pbrms->internal_nhg_name = XSTRDUP( | |
530 | MTYPE_TMP, | |
531 | pbr_nht_nexthop_make_name(pbrms->parent->name, PBR_NHC_NAMELEN, | |
532 | pbrms->seqno, buf)); | |
533 | ||
534 | nh = nexthop_new(); | |
535 | memcpy(nh, nhop, sizeof(*nh)); | |
536 | ||
537 | nexthop_group_add_sorted(pbrms->nhg, nh); | |
e5c83d9b | 538 | |
e5c83d9b | 539 | memset(&find, 0, sizeof(find)); |
06210d1f | 540 | pbr_nht_nexthop_make_name(pbrms->parent->name, PBR_NHC_NAMELEN, |
e5c83d9b | 541 | pbrms->seqno, find.name); |
a4044dc1 QY |
542 | |
543 | if (!pbr_nht_get_next_tableid(true)) { | |
544 | zlog_warn( | |
545 | "%s: Exhausted all table identifiers; cannot create nexthop-group cache for nexthop-group '%s'", | |
15569c58 | 546 | __func__, find.name); |
a4044dc1 QY |
547 | return; |
548 | } | |
549 | ||
e5c83d9b DS |
550 | if (!pbrms->internal_nhg_name) |
551 | pbrms->internal_nhg_name = XSTRDUP(MTYPE_TMP, find.name); | |
552 | ||
553 | pnhgc = hash_get(pbr_nhg_hash, &find, pbr_nhgc_alloc); | |
554 | ||
734bf907 | 555 | lookup.nexthop = *pbrms->nhg->nexthop; |
e5c83d9b DS |
556 | pnhc = hash_get(pnhgc->nhh, &lookup, pbr_nh_alloc); |
557 | pnhc->parent = pnhgc; | |
fcf29c69 DS |
558 | if (nhop->vrf_id != VRF_DEFAULT) { |
559 | struct vrf *vrf = vrf_lookup_by_id(nhop->vrf_id); | |
560 | ||
561 | if (vrf) | |
562 | strlcpy(pnhc->vrf_name, vrf->name, | |
563 | sizeof(pnhc->vrf_name)); | |
564 | } | |
7cbdabff DS |
565 | |
566 | if (nhop->ifindex != 0) { | |
567 | struct interface *ifp = | |
568 | if_lookup_by_index(nhop->ifindex, nhop->vrf_id); | |
569 | ||
570 | if (ifp) | |
571 | strlcpy(pnhc->intf_name, ifp->name, | |
572 | sizeof(pnhc->intf_name)); | |
573 | } | |
e5c83d9b DS |
574 | pbr_nht_install_nexthop_group(pnhgc, *pbrms->nhg); |
575 | } | |
576 | ||
f143cffa | 577 | static void pbr_nht_release_individual_nexthop(struct pbr_map_sequence *pbrms) |
e5c83d9b DS |
578 | { |
579 | struct pbr_nexthop_group_cache *pnhgc; | |
580 | struct pbr_nexthop_group_cache find; | |
581 | struct pbr_nexthop_cache *pnhc; | |
582 | struct pbr_nexthop_cache lup; | |
e5c83d9b | 583 | struct nexthop *nh; |
aafac994 | 584 | enum nexthop_types_t nh_type = 0; |
e5c83d9b | 585 | |
e5c83d9b | 586 | memset(&find, 0, sizeof(find)); |
6612590d | 587 | snprintf(find.name, sizeof(find.name), "%s", pbrms->internal_nhg_name); |
e5c83d9b DS |
588 | pnhgc = hash_lookup(pbr_nhg_hash, &find); |
589 | ||
590 | nh = pbrms->nhg->nexthop; | |
aafac994 | 591 | nh_type = nh->type; |
734bf907 | 592 | lup.nexthop = *nh; |
e5c83d9b DS |
593 | pnhc = hash_lookup(pnhgc->nhh, &lup); |
594 | pnhc->parent = NULL; | |
595 | hash_release(pnhgc->nhh, pnhc); | |
596 | pbr_nh_delete(&pnhc); | |
aafac994 | 597 | pbr_nht_uninstall_nexthop_group(pnhgc, *pbrms->nhg, nh_type); |
e5c83d9b DS |
598 | |
599 | hash_release(pbr_nhg_hash, pnhgc); | |
1f375577 | 600 | pbr_nhgc_delete(pnhgc); |
e5c83d9b | 601 | |
e5c83d9b DS |
602 | nexthop_group_delete(&pbrms->nhg); |
603 | XFREE(MTYPE_TMP, pbrms->internal_nhg_name); | |
604 | } | |
605 | ||
f143cffa SW |
606 | void pbr_nht_delete_individual_nexthop(struct pbr_map_sequence *pbrms) |
607 | { | |
608 | pbr_map_delete_nexthops(pbrms); | |
609 | ||
610 | pbr_nht_release_individual_nexthop(pbrms); | |
611 | } | |
612 | ||
b13e5ad6 | 613 | struct pbr_nexthop_group_cache *pbr_nht_add_group(const char *name) |
e5c83d9b DS |
614 | { |
615 | struct nexthop *nhop; | |
616 | struct nexthop_group_cmd *nhgc; | |
617 | struct pbr_nexthop_group_cache *pnhgc; | |
618 | struct pbr_nexthop_group_cache lookup; | |
619 | ||
a4044dc1 QY |
620 | if (!pbr_nht_get_next_tableid(true)) { |
621 | zlog_warn( | |
622 | "%s: Exhausted all table identifiers; cannot create nexthop-group cache for nexthop-group '%s'", | |
5e81f5dd | 623 | __func__, name); |
a4044dc1 QY |
624 | return NULL; |
625 | } | |
626 | ||
e5c83d9b DS |
627 | nhgc = nhgc_find(name); |
628 | ||
629 | if (!nhgc) { | |
a4044dc1 | 630 | DEBUGD(&pbr_dbg_nht, "%s: Could not find nhgc with name: %s\n", |
5e81f5dd | 631 | __func__, name); |
b13e5ad6 | 632 | return NULL; |
e5c83d9b DS |
633 | } |
634 | ||
6612590d | 635 | snprintf(lookup.name, sizeof(lookup.name), "%s", name); |
e5c83d9b | 636 | pnhgc = hash_get(pbr_nhg_hash, &lookup, pbr_nhgc_alloc); |
5e81f5dd | 637 | DEBUGD(&pbr_dbg_nht, "%s: Retrieved NHGC @ %p", __func__, pnhgc); |
e5c83d9b DS |
638 | |
639 | for (ALL_NEXTHOPS(nhgc->nhg, nhop)) { | |
7fe96307 | 640 | struct pbr_nexthop_cache lookupc; |
e5c83d9b DS |
641 | struct pbr_nexthop_cache *pnhc; |
642 | ||
734bf907 | 643 | lookupc.nexthop = *nhop; |
7fe96307 | 644 | pnhc = hash_lookup(pnhgc->nhh, &lookupc); |
e5c83d9b | 645 | if (!pnhc) { |
7fe96307 | 646 | pnhc = hash_get(pnhgc->nhh, &lookupc, pbr_nh_alloc); |
e5c83d9b DS |
647 | pnhc->parent = pnhgc; |
648 | } | |
649 | } | |
b13e5ad6 DS |
650 | |
651 | return pnhgc; | |
e5c83d9b DS |
652 | } |
653 | ||
654 | void pbr_nht_delete_group(const char *name) | |
655 | { | |
656 | struct pbr_map_sequence *pbrms; | |
657 | struct listnode *snode; | |
658 | struct pbr_map *pbrm; | |
b13e5ad6 DS |
659 | struct pbr_nexthop_group_cache pnhgc_find; |
660 | struct pbr_nexthop_group_cache *pnhgc; | |
e5c83d9b DS |
661 | |
662 | RB_FOREACH (pbrm, pbr_map_entry_head, &pbr_maps) { | |
663 | for (ALL_LIST_ELEMENTS_RO(pbrm->seqnumbers, snode, pbrms)) { | |
664 | if (pbrms->nhgrp_name | |
b13e5ad6 | 665 | && strmatch(pbrms->nhgrp_name, name)) { |
e5c83d9b | 666 | pbrms->reason |= PBR_MAP_INVALID_NO_NEXTHOPS; |
b13e5ad6 DS |
667 | pbrms->nhg = NULL; |
668 | pbrms->internal_nhg_name = NULL; | |
e5c83d9b DS |
669 | pbrm->valid = false; |
670 | } | |
671 | } | |
672 | } | |
b13e5ad6 DS |
673 | |
674 | strlcpy(pnhgc_find.name, name, sizeof(pnhgc_find.name)); | |
675 | pnhgc = hash_release(pbr_nhg_hash, &pnhgc_find); | |
676 | pbr_nhgc_delete(pnhgc); | |
e5c83d9b DS |
677 | } |
678 | ||
679 | bool pbr_nht_nexthop_valid(struct nexthop_group *nhg) | |
680 | { | |
15569c58 | 681 | DEBUGD(&pbr_dbg_nht, "%s: %p", __func__, nhg); |
e5c83d9b DS |
682 | return true; |
683 | } | |
684 | ||
685 | bool pbr_nht_nexthop_group_valid(const char *name) | |
686 | { | |
687 | struct pbr_nexthop_group_cache *pnhgc; | |
688 | struct pbr_nexthop_group_cache lookup; | |
689 | ||
15569c58 | 690 | DEBUGD(&pbr_dbg_nht, "%s: %s", __func__, name); |
e5c83d9b | 691 | |
6612590d | 692 | snprintf(lookup.name, sizeof(lookup.name), "%s", name); |
e5c83d9b DS |
693 | pnhgc = hash_get(pbr_nhg_hash, &lookup, NULL); |
694 | if (!pnhgc) | |
695 | return false; | |
15569c58 | 696 | DEBUGD(&pbr_dbg_nht, "%s: \t%d %d", __func__, pnhgc->valid, |
e5c83d9b DS |
697 | pnhgc->installed); |
698 | if (pnhgc->valid && pnhgc->installed) | |
699 | return true; | |
700 | ||
701 | return false; | |
702 | } | |
703 | ||
704 | struct pbr_nht_individual { | |
705 | struct zapi_route *nhr; | |
a106a408 | 706 | struct interface *ifp; |
fcf29c69 DS |
707 | struct pbr_vrf *pbr_vrf; |
708 | struct pbr_nexthop_cache *pnhc; | |
9d961247 | 709 | vrf_id_t old_vrf_id; |
e5c83d9b DS |
710 | |
711 | uint32_t valid; | |
fcf29c69 DS |
712 | |
713 | bool nhr_matched; | |
e5c83d9b DS |
714 | }; |
715 | ||
8babeb1a SW |
716 | static bool |
717 | pbr_nht_individual_nexthop_gw_update(struct pbr_nexthop_cache *pnhc, | |
c59f754d | 718 | struct pbr_nht_individual *pnhi) |
e5c83d9b | 719 | { |
8babeb1a | 720 | bool is_valid = pnhc->valid; |
e5c83d9b | 721 | |
8babeb1a SW |
722 | if (!pnhi->nhr) /* It doesn't care about non-nexthop updates */ |
723 | goto done; | |
e5c83d9b DS |
724 | |
725 | switch (pnhi->nhr->prefix.family) { | |
726 | case AF_INET: | |
734bf907 | 727 | if (pnhc->nexthop.gate.ipv4.s_addr |
8babeb1a SW |
728 | != pnhi->nhr->prefix.u.prefix4.s_addr) |
729 | goto done; /* Unrelated change */ | |
e5c83d9b DS |
730 | break; |
731 | case AF_INET6: | |
734bf907 | 732 | if (memcmp(&pnhc->nexthop.gate.ipv6, |
b13e5ad6 | 733 | &pnhi->nhr->prefix.u.prefix6, 16) |
8babeb1a SW |
734 | != 0) |
735 | goto done; /* Unrelated change */ | |
736 | break; | |
737 | } | |
738 | ||
c59f754d | 739 | pnhi->nhr_matched = true; |
8babeb1a SW |
740 | if (!pnhi->nhr->nexthop_num) { |
741 | is_valid = false; | |
742 | goto done; | |
743 | } | |
744 | ||
734bf907 DS |
745 | if (pnhc->nexthop.type == NEXTHOP_TYPE_IPV4_IFINDEX |
746 | || pnhc->nexthop.type == NEXTHOP_TYPE_IPV6_IFINDEX) { | |
8babeb1a SW |
747 | |
748 | /* GATEWAY_IFINDEX type shouldn't resolve to group */ | |
749 | if (pnhi->nhr->nexthop_num > 1) { | |
750 | is_valid = false; | |
751 | goto done; | |
752 | } | |
753 | ||
754 | /* If whatever we resolved to wasn't on the interface we | |
755 | * specified. (i.e. not a connected route), its invalid. | |
756 | */ | |
734bf907 | 757 | if (pnhi->nhr->nexthops[0].ifindex != pnhc->nexthop.ifindex) { |
8babeb1a SW |
758 | is_valid = false; |
759 | goto done; | |
760 | } | |
761 | } | |
762 | ||
763 | is_valid = true; | |
764 | ||
765 | done: | |
766 | pnhc->valid = is_valid; | |
767 | ||
768 | return pnhc->valid; | |
769 | } | |
770 | ||
c59f754d WC |
771 | static bool |
772 | pbr_nht_individual_nexthop_interface_update(struct pbr_nexthop_cache *pnhc, | |
773 | struct pbr_nht_individual *pnhi) | |
8babeb1a SW |
774 | { |
775 | bool is_valid = pnhc->valid; | |
776 | ||
777 | if (!pnhi->ifp) /* It doesn't care about non-interface updates */ | |
778 | goto done; | |
779 | ||
734bf907 | 780 | if (pnhc->nexthop.ifindex |
8babeb1a SW |
781 | != pnhi->ifp->ifindex) /* Un-related interface */ |
782 | goto done; | |
783 | ||
c59f754d | 784 | pnhi->nhr_matched = true; |
8babeb1a SW |
785 | is_valid = !!if_is_up(pnhi->ifp); |
786 | ||
787 | done: | |
788 | pnhc->valid = is_valid; | |
789 | ||
790 | return pnhc->valid; | |
791 | } | |
792 | ||
793 | /* Given this update either from interface or nexthop tracking, re-validate this | |
794 | * nexthop. | |
795 | * | |
796 | * If the update is un-related, the subroutines shoud just return their cached | |
797 | * valid state. | |
798 | */ | |
c59f754d WC |
799 | static void pbr_nht_individual_nexthop_update(struct pbr_nexthop_cache *pnhc, |
800 | struct pbr_nht_individual *pnhi) | |
8babeb1a SW |
801 | { |
802 | assert(pnhi->nhr || pnhi->ifp); /* Either nexthop or interface update */ | |
803 | ||
734bf907 | 804 | switch (pnhc->nexthop.type) { |
8babeb1a SW |
805 | case NEXTHOP_TYPE_IFINDEX: |
806 | pbr_nht_individual_nexthop_interface_update(pnhc, pnhi); | |
807 | break; | |
cb254f41 | 808 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
734bf907 | 809 | if (IN6_IS_ADDR_LINKLOCAL(&pnhc->nexthop.gate.ipv6)) { |
cb254f41 SW |
810 | pbr_nht_individual_nexthop_interface_update(pnhc, pnhi); |
811 | break; | |
812 | } | |
813 | /* Intentional fall thru */ | |
814 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
8babeb1a SW |
815 | case NEXTHOP_TYPE_IPV4: |
816 | case NEXTHOP_TYPE_IPV6: | |
8babeb1a SW |
817 | pbr_nht_individual_nexthop_gw_update(pnhc, pnhi); |
818 | break; | |
819 | case NEXTHOP_TYPE_BLACKHOLE: | |
820 | pnhc->valid = true; | |
e5c83d9b DS |
821 | break; |
822 | } | |
8babeb1a SW |
823 | } |
824 | ||
825 | static void pbr_nht_individual_nexthop_update_lookup(struct hash_bucket *b, | |
826 | void *data) | |
827 | { | |
828 | struct pbr_nexthop_cache *pnhc = b->data; | |
829 | struct pbr_nht_individual *pnhi = data; | |
830 | char buf[PREFIX_STRLEN]; | |
831 | bool old_valid; | |
832 | ||
833 | old_valid = pnhc->valid; | |
834 | ||
835 | pbr_nht_individual_nexthop_update(pnhc, pnhi); | |
e5c83d9b DS |
836 | |
837 | DEBUGD(&pbr_dbg_nht, "\tFound %s: old: %d new: %d", | |
838 | prefix2str(&pnhi->nhr->prefix, buf, sizeof(buf)), old_valid, | |
839 | pnhc->valid); | |
840 | ||
e5c83d9b DS |
841 | if (pnhc->valid) |
842 | pnhi->valid += 1; | |
843 | } | |
844 | ||
b822b93a SW |
845 | static void pbr_nexthop_group_cache_iterate_to_group(struct hash_bucket *b, |
846 | void *data) | |
847 | { | |
848 | struct pbr_nexthop_cache *pnhc = b->data; | |
849 | struct nexthop_group *nhg = data; | |
850 | struct nexthop *nh = NULL; | |
851 | ||
734bf907 | 852 | copy_nexthops(&nh, &pnhc->nexthop, NULL); |
b822b93a | 853 | |
50d89650 | 854 | _nexthop_add(&nhg->nexthop, nh); |
b822b93a SW |
855 | } |
856 | ||
857 | static void | |
858 | pbr_nexthop_group_cache_to_nexthop_group(struct nexthop_group *nhg, | |
859 | struct pbr_nexthop_group_cache *pnhgc) | |
860 | { | |
861 | hash_iterate(pnhgc->nhh, pbr_nexthop_group_cache_iterate_to_group, nhg); | |
862 | } | |
863 | ||
e3b78da8 | 864 | static void pbr_nht_nexthop_update_lookup(struct hash_bucket *b, void *data) |
e5c83d9b DS |
865 | { |
866 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
8babeb1a | 867 | struct pbr_nht_individual pnhi = {}; |
b822b93a | 868 | struct nexthop_group nhg = {}; |
b13e5ad6 DS |
869 | bool old_valid; |
870 | ||
871 | old_valid = pnhgc->valid; | |
e5c83d9b DS |
872 | |
873 | pnhi.nhr = (struct zapi_route *)data; | |
874 | pnhi.valid = 0; | |
c59f754d | 875 | pnhi.nhr_matched = false; |
e5c83d9b DS |
876 | hash_iterate(pnhgc->nhh, pbr_nht_individual_nexthop_update_lookup, |
877 | &pnhi); | |
878 | ||
c59f754d WC |
879 | if (!pnhi.nhr_matched) |
880 | return; | |
881 | ||
e5c83d9b DS |
882 | /* |
883 | * If any of the specified nexthops are valid we are valid | |
884 | */ | |
885 | pnhgc->valid = !!pnhi.valid; | |
b13e5ad6 | 886 | |
6db1188f SW |
887 | pbr_nexthop_group_cache_to_nexthop_group(&nhg, pnhgc); |
888 | ||
889 | if (pnhgc->valid) | |
b822b93a | 890 | pbr_nht_install_nexthop_group(pnhgc, nhg); |
6db1188f SW |
891 | else |
892 | pbr_nht_uninstall_nexthop_group(pnhgc, nhg, 0); | |
893 | ||
894 | /* Don't need copied nexthops anymore */ | |
895 | nexthops_free(nhg.nexthop); | |
b822b93a | 896 | |
b13e5ad6 DS |
897 | if (old_valid != pnhgc->valid) |
898 | pbr_map_check_nh_group_change(pnhgc->name); | |
e5c83d9b DS |
899 | } |
900 | ||
901 | void pbr_nht_nexthop_update(struct zapi_route *nhr) | |
902 | { | |
903 | hash_iterate(pbr_nhg_hash, pbr_nht_nexthop_update_lookup, nhr); | |
904 | } | |
905 | ||
9d961247 DS |
906 | struct nhrc_vrf_info { |
907 | struct pbr_vrf *pbr_vrf; | |
908 | uint32_t old_vrf_id; | |
909 | struct nhrc *nhrc; | |
910 | }; | |
911 | ||
912 | static int pbr_nht_nhrc_vrf_change(struct hash_bucket *b, void *data) | |
913 | { | |
914 | struct nhrc *nhrc = b->data; | |
915 | struct nhrc_vrf_info *nhrcvi = data; | |
916 | ||
917 | if (nhrc->nexthop.vrf_id == nhrcvi->old_vrf_id) { | |
918 | nhrcvi->nhrc = nhrc; | |
919 | return HASHWALK_ABORT; | |
920 | } | |
921 | ||
922 | return HASHWALK_CONTINUE; | |
923 | } | |
924 | ||
925 | static int pbr_nht_individual_nexthop_vrf_handle(struct hash_bucket *b, | |
926 | void *data) | |
fcf29c69 DS |
927 | { |
928 | struct pbr_nexthop_cache *pnhc = b->data; | |
929 | struct pbr_nht_individual *pnhi = data; | |
930 | ||
9d961247 DS |
931 | if (pnhc->looked_at == true) |
932 | return HASHWALK_CONTINUE; | |
933 | ||
734bf907 | 934 | if (pnhc->nexthop.vrf_id == VRF_DEFAULT) |
9d961247 | 935 | return HASHWALK_CONTINUE; |
fcf29c69 | 936 | |
9d961247 DS |
937 | if (strncmp(pnhc->vrf_name, pbr_vrf_name(pnhi->pbr_vrf), |
938 | sizeof(pnhc->vrf_name)) | |
939 | == 0) { | |
fcf29c69 | 940 | pnhi->pnhc = pnhc; |
9d961247 | 941 | |
734bf907 | 942 | if (pnhc->nexthop.vrf_id != pbr_vrf_id(pnhi->pbr_vrf)) { |
9d961247 DS |
943 | struct nhrc_vrf_info nhrcvi; |
944 | ||
945 | memset(&nhrcvi, 0, sizeof(nhrcvi)); | |
946 | nhrcvi.pbr_vrf = pnhi->pbr_vrf; | |
734bf907 | 947 | nhrcvi.old_vrf_id = pnhc->nexthop.vrf_id; |
9d961247 DS |
948 | |
949 | pnhi->nhr_matched = true; | |
734bf907 | 950 | pnhi->old_vrf_id = pnhc->nexthop.vrf_id; |
9d961247 DS |
951 | |
952 | do { | |
953 | nhrcvi.nhrc = NULL; | |
954 | hash_walk(pbr_nhrc_hash, | |
955 | pbr_nht_nhrc_vrf_change, &nhrcvi); | |
956 | if (nhrcvi.nhrc) { | |
957 | hash_release(pbr_nhrc_hash, | |
958 | nhrcvi.nhrc); | |
959 | nhrcvi.nhrc->nexthop.vrf_id = | |
960 | pbr_vrf_id(pnhi->pbr_vrf); | |
961 | hash_get(pbr_nhrc_hash, nhrcvi.nhrc, | |
962 | hash_alloc_intern); | |
963 | pbr_send_rnh(&nhrcvi.nhrc->nexthop, true); | |
964 | } | |
965 | } while (nhrcvi.nhrc); | |
966 | } | |
967 | ||
968 | pnhc->looked_at = true; | |
969 | return HASHWALK_ABORT; | |
fcf29c69 | 970 | } |
9d961247 DS |
971 | |
972 | return HASHWALK_CONTINUE; | |
973 | } | |
974 | ||
975 | static void pbr_nht_clear_looked_at(struct hash_bucket *b, void *data) | |
976 | { | |
977 | struct pbr_nexthop_cache *pnhc = b->data; | |
978 | ||
979 | pnhc->looked_at = false; | |
fcf29c69 DS |
980 | } |
981 | ||
982 | static void pbr_nht_nexthop_vrf_handle(struct hash_bucket *b, void *data) | |
983 | { | |
984 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
985 | struct pbr_vrf *pbr_vrf = data; | |
986 | struct pbr_nht_individual pnhi = {}; | |
fcf29c69 | 987 | |
9d961247 DS |
988 | zlog_debug("pnhgc iterating"); |
989 | hash_iterate(pnhgc->nhh, pbr_nht_clear_looked_at, NULL); | |
990 | memset(&pnhi, 0, sizeof(pnhi)); | |
991 | pnhi.pbr_vrf = pbr_vrf; | |
fcf29c69 | 992 | do { |
9d961247 DS |
993 | struct pbr_nexthop_cache *pnhc; |
994 | ||
995 | pnhi.pnhc = NULL; | |
996 | hash_walk(pnhgc->nhh, pbr_nht_individual_nexthop_vrf_handle, | |
997 | &pnhi); | |
fcf29c69 DS |
998 | |
999 | if (!pnhi.pnhc) | |
1000 | continue; | |
1001 | ||
9d961247 | 1002 | pnhc = pnhi.pnhc; |
734bf907 | 1003 | pnhc->nexthop.vrf_id = pnhi.old_vrf_id; |
fcf29c69 | 1004 | pnhi.pnhc = hash_release(pnhgc->nhh, pnhi.pnhc); |
9d961247 | 1005 | if (pnhi.pnhc) { |
734bf907 | 1006 | pnhi.pnhc->nexthop.vrf_id = pbr_vrf_id(pbr_vrf); |
fcf29c69 | 1007 | |
9d961247 DS |
1008 | hash_get(pnhgc->nhh, pnhi.pnhc, hash_alloc_intern); |
1009 | } else | |
734bf907 | 1010 | pnhc->nexthop.vrf_id = pbr_vrf_id(pbr_vrf); |
fcf29c69 DS |
1011 | |
1012 | pbr_map_check_vrf_nh_group_change(pnhgc->name, pbr_vrf, | |
9d961247 | 1013 | pnhi.old_vrf_id); |
fcf29c69 DS |
1014 | } while (pnhi.pnhc); |
1015 | } | |
1016 | ||
1017 | void pbr_nht_vrf_update(struct pbr_vrf *pbr_vrf) | |
1018 | { | |
1019 | hash_iterate(pbr_nhg_hash, pbr_nht_nexthop_vrf_handle, pbr_vrf); | |
1020 | } | |
1021 | ||
7cbdabff DS |
1022 | static void pbr_nht_individual_nexthop_interface_handle(struct hash_bucket *b, |
1023 | void *data) | |
1024 | { | |
1025 | struct pbr_nexthop_cache *pnhc = b->data; | |
1026 | struct pbr_nht_individual *pnhi = data; | |
1027 | ||
734bf907 | 1028 | if (pnhc->nexthop.ifindex == 0) |
7cbdabff DS |
1029 | return; |
1030 | ||
1031 | if ((strncmp(pnhc->intf_name, pnhi->ifp->name, sizeof(pnhc->intf_name)) | |
1032 | == 0) | |
734bf907 | 1033 | && pnhc->nexthop.ifindex != pnhi->ifp->ifindex) |
7cbdabff DS |
1034 | pnhi->pnhc = pnhc; |
1035 | } | |
1036 | ||
1037 | static void pbr_nht_nexthop_interface_handle(struct hash_bucket *b, void *data) | |
1038 | { | |
1039 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
1040 | struct interface *ifp = data; | |
1041 | struct pbr_nht_individual pnhi = {}; | |
1042 | struct nhrc *nhrc; | |
1043 | uint32_t old_ifindex; | |
1044 | ||
1045 | do { | |
1046 | memset(&pnhi, 0, sizeof(pnhi)); | |
1047 | pnhi.ifp = ifp; | |
1048 | hash_iterate(pnhgc->nhh, | |
1049 | pbr_nht_individual_nexthop_interface_handle, | |
1050 | &pnhi); | |
1051 | ||
1052 | if (!pnhi.pnhc) | |
1053 | continue; | |
1054 | ||
1055 | pnhi.pnhc = hash_release(pnhgc->nhh, pnhi.pnhc); | |
734bf907 | 1056 | old_ifindex = pnhi.pnhc->nexthop.ifindex; |
7cbdabff | 1057 | |
734bf907 | 1058 | nhrc = hash_lookup(pbr_nhrc_hash, &pnhi.pnhc->nexthop); |
7cbdabff DS |
1059 | if (nhrc) { |
1060 | hash_release(pbr_nhrc_hash, nhrc); | |
1061 | nhrc->nexthop.ifindex = ifp->ifindex; | |
1062 | hash_get(pbr_nhrc_hash, nhrc, hash_alloc_intern); | |
1063 | } | |
734bf907 | 1064 | pnhi.pnhc->nexthop.ifindex = ifp->ifindex; |
7cbdabff DS |
1065 | |
1066 | hash_get(pnhgc->nhh, pnhi.pnhc, hash_alloc_intern); | |
1067 | ||
1068 | pbr_map_check_interface_nh_group_change(pnhgc->name, ifp, | |
1069 | old_ifindex); | |
1070 | } while (pnhi.pnhc); | |
1071 | } | |
1072 | ||
1073 | void pbr_nht_interface_update(struct interface *ifp) | |
1074 | { | |
1075 | hash_iterate(pbr_nhg_hash, pbr_nht_nexthop_interface_handle, ifp); | |
1076 | } | |
1077 | ||
a106a408 | 1078 | static void |
7f5818fb | 1079 | pbr_nht_individual_nexthop_interface_update_lookup(struct hash_bucket *b, |
a106a408 RW |
1080 | void *data) |
1081 | { | |
1082 | struct pbr_nexthop_cache *pnhc = b->data; | |
1083 | struct pbr_nht_individual *pnhi = data; | |
1084 | bool old_valid; | |
1085 | ||
1086 | old_valid = pnhc->valid; | |
1087 | ||
8babeb1a | 1088 | pbr_nht_individual_nexthop_update(pnhc, pnhi); |
a106a408 RW |
1089 | |
1090 | DEBUGD(&pbr_dbg_nht, "\tFound %s: old: %d new: %d", pnhi->ifp->name, | |
1091 | old_valid, pnhc->valid); | |
1092 | ||
1093 | if (pnhc->valid) | |
1094 | pnhi->valid += 1; | |
1095 | } | |
1096 | ||
7f5818fb | 1097 | static void pbr_nht_nexthop_interface_update_lookup(struct hash_bucket *b, |
a106a408 RW |
1098 | void *data) |
1099 | { | |
1100 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
8babeb1a | 1101 | struct pbr_nht_individual pnhi = {}; |
a106a408 RW |
1102 | bool old_valid; |
1103 | ||
1104 | old_valid = pnhgc->valid; | |
1105 | ||
1106 | pnhi.ifp = data; | |
1107 | pnhi.valid = 0; | |
1108 | hash_iterate(pnhgc->nhh, | |
1109 | pbr_nht_individual_nexthop_interface_update_lookup, &pnhi); | |
1110 | ||
1111 | /* | |
1112 | * If any of the specified nexthops are valid we are valid | |
1113 | */ | |
1114 | pnhgc->valid = !!pnhi.valid; | |
1115 | ||
1116 | if (old_valid != pnhgc->valid) | |
1117 | pbr_map_check_nh_group_change(pnhgc->name); | |
1118 | } | |
1119 | ||
1120 | void pbr_nht_nexthop_interface_update(struct interface *ifp) | |
1121 | { | |
1122 | hash_iterate(pbr_nhg_hash, pbr_nht_nexthop_interface_update_lookup, | |
1123 | ifp); | |
1124 | } | |
1125 | ||
d8b87afe | 1126 | static uint32_t pbr_nhg_hash_key(const void *arg) |
e5c83d9b | 1127 | { |
d8b87afe | 1128 | const struct pbr_nexthop_group_cache *nhgc = arg; |
e5c83d9b DS |
1129 | |
1130 | return jhash(&nhgc->name, strlen(nhgc->name), 0x52c34a96); | |
1131 | } | |
1132 | ||
74df8d6d | 1133 | static bool pbr_nhg_hash_equal(const void *arg1, const void *arg2) |
e5c83d9b DS |
1134 | { |
1135 | const struct pbr_nexthop_group_cache *nhgc1 = | |
1136 | (const struct pbr_nexthop_group_cache *)arg1; | |
1137 | const struct pbr_nexthop_group_cache *nhgc2 = | |
1138 | (const struct pbr_nexthop_group_cache *)arg2; | |
1139 | ||
1140 | return !strcmp(nhgc1->name, nhgc2->name); | |
1141 | } | |
1142 | ||
a4044dc1 | 1143 | uint32_t pbr_nht_get_next_tableid(bool peek) |
e5c83d9b DS |
1144 | { |
1145 | uint32_t i; | |
1146 | bool found = false; | |
1147 | ||
1148 | for (i = pbr_nhg_low_table; i <= pbr_nhg_high_table; i++) { | |
d8729f8c | 1149 | if (!nhg_tableid[i]) { |
e5c83d9b DS |
1150 | found = true; |
1151 | break; | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | if (found) { | |
a4044dc1 | 1156 | nhg_tableid[i] = !peek; |
e5c83d9b DS |
1157 | return i; |
1158 | } else | |
1159 | return 0; | |
1160 | } | |
1161 | ||
1162 | void pbr_nht_set_tableid_range(uint32_t low, uint32_t high) | |
1163 | { | |
1164 | pbr_nhg_low_table = low; | |
1165 | pbr_nhg_high_table = high; | |
1166 | } | |
1167 | ||
1168 | void pbr_nht_write_table_range(struct vty *vty) | |
1169 | { | |
1170 | if (pbr_nhg_low_table != PBR_NHT_DEFAULT_LOW_TABLEID | |
1171 | || pbr_nhg_high_table != PBR_NHT_DEFAULT_HIGH_TABLEID) { | |
1172 | vty_out(vty, "pbr table range %u %u\n", pbr_nhg_low_table, | |
1173 | pbr_nhg_high_table); | |
1174 | } | |
1175 | } | |
1176 | ||
1177 | uint32_t pbr_nht_get_next_rule(uint32_t seqno) | |
1178 | { | |
1179 | return seqno + pbr_nhg_low_rule - 1; | |
1180 | } | |
1181 | void pbr_nht_set_rule_range(uint32_t low, uint32_t high) | |
1182 | { | |
1183 | pbr_nhg_low_rule = low; | |
1184 | pbr_nhg_high_rule = high; | |
1185 | } | |
1186 | ||
1187 | void pbr_nht_write_rule_range(struct vty *vty) | |
1188 | { | |
1189 | if (pbr_nhg_low_rule != PBR_NHT_DEFAULT_LOW_RULE | |
1190 | || pbr_nhg_high_rule != PBR_NHT_DEFAULT_HIGH_RULE) { | |
1191 | vty_out(vty, "pbr rule range %u %u\n", pbr_nhg_low_rule, | |
1192 | pbr_nhg_high_rule); | |
1193 | } | |
1194 | } | |
1195 | ||
1196 | uint32_t pbr_nht_get_table(const char *name) | |
1197 | { | |
1198 | struct pbr_nexthop_group_cache find; | |
1199 | struct pbr_nexthop_group_cache *pnhgc; | |
1200 | ||
1201 | memset(&find, 0, sizeof(find)); | |
6612590d | 1202 | snprintf(find.name, sizeof(find.name), "%s", name); |
e5c83d9b DS |
1203 | pnhgc = hash_lookup(pbr_nhg_hash, &find); |
1204 | ||
1205 | if (!pnhgc) { | |
1206 | DEBUGD(&pbr_dbg_nht, | |
1207 | "%s: Could not find nexthop-group cache w/ name '%s'", | |
15569c58 | 1208 | __func__, name); |
e5c83d9b DS |
1209 | return 5000; |
1210 | } | |
1211 | ||
1212 | return pnhgc->table_id; | |
1213 | } | |
1214 | ||
1215 | bool pbr_nht_get_installed(const char *name) | |
1216 | { | |
1217 | struct pbr_nexthop_group_cache find; | |
1218 | struct pbr_nexthop_group_cache *pnhgc; | |
1219 | ||
1220 | memset(&find, 0, sizeof(find)); | |
6612590d | 1221 | snprintf(find.name, sizeof(find.name), "%s", name); |
e5c83d9b DS |
1222 | |
1223 | pnhgc = hash_lookup(pbr_nhg_hash, &find); | |
1224 | ||
d3765386 | 1225 | if (!pnhgc) |
e5c83d9b | 1226 | return false; |
e5c83d9b DS |
1227 | |
1228 | return pnhgc->installed; | |
1229 | } | |
1230 | ||
e3b78da8 | 1231 | static void pbr_nht_show_nhg_nexthops(struct hash_bucket *b, void *data) |
e5c83d9b DS |
1232 | { |
1233 | struct pbr_nexthop_cache *pnhc = b->data; | |
1234 | struct vty *vty = data; | |
1235 | ||
57cdafc4 | 1236 | vty_out(vty, "\tValid: %d ", pnhc->valid); |
734bf907 | 1237 | nexthop_group_write_nexthop(vty, &pnhc->nexthop); |
e5c83d9b DS |
1238 | } |
1239 | ||
010dd8ed WC |
1240 | static void pbr_nht_json_nhg_nexthops(struct hash_bucket *b, void *data) |
1241 | { | |
1242 | struct pbr_nexthop_cache *pnhc = b->data; | |
1243 | json_object *all_hops = data; | |
1244 | json_object *this_hop; | |
1245 | ||
1246 | this_hop = json_object_new_object(); | |
734bf907 | 1247 | nexthop_group_json_nexthop(this_hop, &pnhc->nexthop); |
3e81618d | 1248 | json_object_boolean_add(this_hop, "valid", pnhc->valid); |
010dd8ed WC |
1249 | |
1250 | json_object_array_add(all_hops, this_hop); | |
1251 | } | |
1252 | ||
e5c83d9b DS |
1253 | struct pbr_nht_show { |
1254 | struct vty *vty; | |
010dd8ed | 1255 | json_object *json; |
e5c83d9b DS |
1256 | const char *name; |
1257 | }; | |
1258 | ||
e3b78da8 | 1259 | static void pbr_nht_show_nhg(struct hash_bucket *b, void *data) |
e5c83d9b DS |
1260 | { |
1261 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
1262 | struct pbr_nht_show *pns = data; | |
1263 | struct vty *vty; | |
1264 | ||
1265 | if (pns->name && strcmp(pns->name, pnhgc->name) != 0) | |
1266 | return; | |
1267 | ||
1268 | vty = pns->vty; | |
1269 | vty_out(vty, "Nexthop-Group: %s Table: %u Valid: %d Installed: %d\n", | |
1270 | pnhgc->name, pnhgc->table_id, pnhgc->valid, pnhgc->installed); | |
1271 | ||
1272 | hash_iterate(pnhgc->nhh, pbr_nht_show_nhg_nexthops, vty); | |
1273 | } | |
1274 | ||
010dd8ed WC |
1275 | static void pbr_nht_json_nhg(struct hash_bucket *b, void *data) |
1276 | { | |
1277 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
1278 | struct pbr_nht_show *pns = data; | |
1279 | json_object *j, *this_group, *group_hops; | |
1280 | ||
1281 | if (pns->name && strcmp(pns->name, pnhgc->name) != 0) | |
1282 | return; | |
1283 | ||
1284 | j = pns->json; | |
1285 | this_group = json_object_new_object(); | |
1286 | ||
1287 | if (!j || !this_group) | |
1288 | return; | |
1289 | ||
010dd8ed | 1290 | json_object_int_add(this_group, "id", pnhgc->table_id); |
81c0078e | 1291 | json_object_string_add(this_group, "name", pnhgc->name); |
3e81618d WC |
1292 | json_object_boolean_add(this_group, "valid", pnhgc->valid); |
1293 | json_object_boolean_add(this_group, "installed", pnhgc->installed); | |
010dd8ed WC |
1294 | |
1295 | group_hops = json_object_new_array(); | |
1296 | ||
1297 | if (group_hops) { | |
1298 | hash_iterate(pnhgc->nhh, pbr_nht_json_nhg_nexthops, group_hops); | |
1299 | json_object_object_add(this_group, "nexthops", group_hops); | |
1300 | } | |
1301 | ||
dadba1a2 | 1302 | json_object_array_add(j, this_group); |
010dd8ed WC |
1303 | } |
1304 | ||
e5c83d9b DS |
1305 | void pbr_nht_show_nexthop_group(struct vty *vty, const char *name) |
1306 | { | |
1307 | struct pbr_nht_show pns; | |
1308 | ||
1309 | pns.vty = vty; | |
1310 | pns.name = name; | |
1311 | ||
1312 | hash_iterate(pbr_nhg_hash, pbr_nht_show_nhg, &pns); | |
1313 | } | |
1314 | ||
010dd8ed WC |
1315 | void pbr_nht_json_nexthop_group(json_object *j, const char *name) |
1316 | { | |
1317 | struct pbr_nht_show pns; | |
1318 | ||
1319 | pns.name = name; | |
1320 | pns.json = j; | |
1321 | ||
1322 | hash_iterate(pbr_nhg_hash, pbr_nht_json_nhg, &pns); | |
1323 | } | |
1324 | ||
e5c83d9b DS |
1325 | void pbr_nht_init(void) |
1326 | { | |
1327 | pbr_nhg_hash = hash_create_size( | |
1328 | 16, pbr_nhg_hash_key, pbr_nhg_hash_equal, "PBR NHG Cache Hash"); | |
b13e5ad6 | 1329 | pbr_nhrc_hash = |
d8b87afe | 1330 | hash_create_size(16, (unsigned int (*)(const void *))nexthop_hash, |
b13e5ad6 | 1331 | pbr_nhrc_hash_equal, "PBR NH Hash"); |
e5c83d9b DS |
1332 | |
1333 | pbr_nhg_low_table = PBR_NHT_DEFAULT_LOW_TABLEID; | |
1334 | pbr_nhg_high_table = PBR_NHT_DEFAULT_HIGH_TABLEID; | |
1335 | pbr_nhg_low_rule = PBR_NHT_DEFAULT_LOW_RULE; | |
1336 | pbr_nhg_high_rule = PBR_NHT_DEFAULT_HIGH_RULE; | |
1337 | memset(&nhg_tableid, 0, 65535 * sizeof(uint8_t)); | |
1338 | } |