]>
Commit | Line | Data |
---|---|---|
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 | ||
40 | static 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)); | |
b13e5ad6 DS |
94 | nhrc = hash_get(pbr_nhrc_hash, pnhc->nexthop, pbr_nhrc_hash_alloc); |
95 | new->nexthop = &nhrc->nexthop; | |
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 | |
b13e5ad6 | 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 | ||
112 | nhrc = hash_lookup(pbr_nhrc_hash, (*pnhc)->nexthop); | |
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__); |
b13e5ad6 DS |
119 | pbr_send_rnh((*pnhc)->nexthop, false); |
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 | |
b13e5ad6 | 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 | ||
b13e5ad6 | 151 | if (pbrnc1->nexthop->vrf_id != pbrnc2->nexthop->vrf_id) |
74df8d6d | 152 | return false; |
e5c83d9b | 153 | |
b13e5ad6 | 154 | if (pbrnc1->nexthop->ifindex != pbrnc2->nexthop->ifindex) |
74df8d6d | 155 | return false; |
e5c83d9b | 156 | |
b13e5ad6 | 157 | if (pbrnc1->nexthop->type != pbrnc2->nexthop->type) |
74df8d6d | 158 | return false; |
e5c83d9b | 159 | |
b13e5ad6 | 160 | switch (pbrnc1->nexthop->type) { |
e5c83d9b | 161 | case NEXTHOP_TYPE_IFINDEX: |
a106a408 | 162 | return pbrnc1->nexthop->ifindex == pbrnc2->nexthop->ifindex; |
e5c83d9b DS |
163 | case NEXTHOP_TYPE_IPV4_IFINDEX: |
164 | case NEXTHOP_TYPE_IPV4: | |
b13e5ad6 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: | |
f24f3450 RW |
169 | return !memcmp(&pbrnc1->nexthop->gate.ipv6, |
170 | &pbrnc2->nexthop->gate.ipv6, 16); | |
e5c83d9b | 171 | case NEXTHOP_TYPE_BLACKHOLE: |
b13e5ad6 | 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 DS |
251 | /* create & insert new pnhc into pnhgc->nhh */ |
252 | pnhc_find.nexthop = (struct nexthop *)nhop; | |
253 | pnhc = hash_get(pnhgc->nhh, &pnhc_find, pbr_nh_alloc); | |
254 | pnhc_find.nexthop = NULL; | |
255 | ||
256 | /* set parent pnhgc */ | |
257 | pnhc->parent = pnhgc; | |
e5c83d9b | 258 | |
b13e5ad6 DS |
259 | if (DEBUG_MODE_CHECK(&pbr_dbg_nht, DEBUG_MODE_ALL)) { |
260 | nexthop2str(nhop, debugstr, sizeof(debugstr)); | |
261 | DEBUGD(&pbr_dbg_nht, "%s: Added %s to nexthop-group %s", | |
15569c58 | 262 | __func__, debugstr, nhgc->name); |
b13e5ad6 DS |
263 | } |
264 | ||
265 | pbr_nht_install_nexthop_group(pnhgc, nhgc->nhg); | |
266 | pbr_map_check_nh_group_change(nhgc->name); | |
a106a408 | 267 | |
cb254f41 SW |
268 | if (nhop->type == NEXTHOP_TYPE_IFINDEX |
269 | || (nhop->type == NEXTHOP_TYPE_IPV6_IFINDEX | |
270 | && IN6_IS_ADDR_LINKLOCAL(&nhop->gate.ipv6))) { | |
a106a408 RW |
271 | struct interface *ifp; |
272 | ||
273 | ifp = if_lookup_by_index(nhop->ifindex, nhop->vrf_id); | |
274 | if (ifp) | |
275 | pbr_nht_nexthop_interface_update(ifp); | |
276 | } | |
e5c83d9b DS |
277 | } |
278 | ||
b13e5ad6 | 279 | void pbr_nhgroup_del_nexthop_cb(const struct nexthop_group_cmd *nhgc, |
e5c83d9b DS |
280 | const struct nexthop *nhop) |
281 | { | |
b13e5ad6 | 282 | char debugstr[256]; |
3e300703 | 283 | struct pbr_nexthop_group_cache pnhgc_find = {}; |
b13e5ad6 | 284 | struct pbr_nexthop_group_cache *pnhgc; |
3e300703 | 285 | struct pbr_nexthop_cache pnhc_find = {}; |
b13e5ad6 | 286 | struct pbr_nexthop_cache *pnhc; |
aafac994 | 287 | enum nexthop_types_t nh_type = nhop->type; |
b13e5ad6 DS |
288 | |
289 | /* find pnhgc by name */ | |
290 | strlcpy(pnhgc_find.name, nhgc->name, sizeof(pnhgc_find.name)); | |
a4044dc1 | 291 | pnhgc = hash_lookup(pbr_nhg_hash, &pnhgc_find); |
b13e5ad6 DS |
292 | |
293 | /* delete pnhc from pnhgc->nhh */ | |
294 | pnhc_find.nexthop = (struct nexthop *)nhop; | |
295 | pnhc = hash_release(pnhgc->nhh, &pnhc_find); | |
296 | ||
297 | /* delete pnhc */ | |
298 | pbr_nh_delete(&pnhc); | |
e5c83d9b | 299 | |
b13e5ad6 DS |
300 | if (DEBUG_MODE_CHECK(&pbr_dbg_nht, DEBUG_MODE_ALL)) { |
301 | nexthop2str(nhop, debugstr, sizeof(debugstr)); | |
302 | DEBUGD(&pbr_dbg_nht, "%s: Removed %s from nexthop-group %s", | |
15569c58 | 303 | __func__, debugstr, nhgc->name); |
b13e5ad6 | 304 | } |
e5c83d9b | 305 | |
ff9799c3 DS |
306 | if (pnhgc->nhh->count) |
307 | pbr_nht_install_nexthop_group(pnhgc, nhgc->nhg); | |
308 | else | |
aafac994 | 309 | pbr_nht_uninstall_nexthop_group(pnhgc, nhgc->nhg, nh_type); |
ff9799c3 | 310 | |
b13e5ad6 | 311 | pbr_map_check_nh_group_change(nhgc->name); |
e5c83d9b DS |
312 | } |
313 | ||
314 | void pbr_nhgroup_delete_cb(const char *name) | |
315 | { | |
15569c58 | 316 | DEBUGD(&pbr_dbg_nht, "%s: Removed nexthop-group %s", __func__, name); |
b13e5ad6 | 317 | |
ff9799c3 DS |
318 | /* delete group from all pbrms's */ |
319 | pbr_nht_delete_group(name); | |
320 | ||
b13e5ad6 | 321 | pbr_map_check_nh_group_change(name); |
e5c83d9b DS |
322 | } |
323 | ||
324 | #if 0 | |
325 | static struct pbr_nexthop_cache *pbr_nht_lookup_nexthop(struct nexthop *nexthop) | |
326 | { | |
327 | return NULL; | |
328 | } | |
329 | #endif | |
330 | ||
e3b78da8 | 331 | static void pbr_nht_find_nhg_from_table_install(struct hash_bucket *b, |
e5c83d9b DS |
332 | void *data) |
333 | { | |
334 | struct pbr_nexthop_group_cache *pnhgc = | |
335 | (struct pbr_nexthop_group_cache *)b->data; | |
336 | uint32_t *table_id = (uint32_t *)data; | |
337 | ||
338 | if (pnhgc->table_id == *table_id) { | |
15569c58 DA |
339 | DEBUGD(&pbr_dbg_nht, "%s: Table ID (%u) matches %s", __func__, |
340 | *table_id, pnhgc->name); | |
2fb7892e DS |
341 | |
342 | /* | |
343 | * If the table has been re-handled by zebra | |
344 | * and we are already installed no need to do | |
345 | * anything here. | |
346 | */ | |
347 | if (!pnhgc->installed) { | |
348 | pnhgc->installed = true; | |
349 | pbr_map_schedule_policy_from_nhg(pnhgc->name); | |
350 | } | |
e5c83d9b DS |
351 | } |
352 | } | |
353 | ||
354 | void pbr_nht_route_installed_for_table(uint32_t table_id) | |
355 | { | |
356 | hash_iterate(pbr_nhg_hash, pbr_nht_find_nhg_from_table_install, | |
357 | &table_id); | |
358 | } | |
359 | ||
e3b78da8 | 360 | static void pbr_nht_find_nhg_from_table_remove(struct hash_bucket *b, |
e5c83d9b DS |
361 | void *data) |
362 | { | |
363 | ; | |
364 | } | |
365 | ||
366 | void pbr_nht_route_removed_for_table(uint32_t table_id) | |
367 | { | |
368 | hash_iterate(pbr_nhg_hash, pbr_nht_find_nhg_from_table_remove, | |
369 | &table_id); | |
370 | } | |
371 | ||
372 | /* | |
373 | * Loop through all nexthops in a nexthop group to check that they are all the | |
374 | * same. If they are not all the same, log this peculiarity. | |
375 | * | |
376 | * nhg | |
377 | * The nexthop group to check | |
378 | * | |
379 | * Returns: | |
380 | * - AFI of last nexthop in the group | |
381 | * - AFI_MAX on error | |
382 | */ | |
ff9799c3 | 383 | static afi_t pbr_nht_which_afi(struct nexthop_group nhg, |
aafac994 | 384 | enum nexthop_types_t nh_type) |
e5c83d9b DS |
385 | { |
386 | struct nexthop *nexthop; | |
387 | afi_t install_afi = AFI_MAX; | |
388 | bool v6, v4, bh; | |
d3765386 | 389 | |
268c24ee RW |
390 | if (nh_type) { |
391 | switch (nh_type) { | |
392 | case NEXTHOP_TYPE_IPV4: | |
393 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
394 | return AFI_IP; | |
395 | case NEXTHOP_TYPE_IPV6: | |
396 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
397 | return AFI_IP6; | |
398 | case NEXTHOP_TYPE_IFINDEX: | |
399 | case NEXTHOP_TYPE_BLACKHOLE: | |
400 | return AFI_MAX; | |
401 | } | |
402 | } | |
403 | ||
e5c83d9b DS |
404 | v6 = v4 = bh = false; |
405 | ||
268c24ee RW |
406 | for (ALL_NEXTHOPS(nhg, nexthop)) { |
407 | nh_type = nexthop->type; | |
408 | ||
409 | switch (nh_type) { | |
410 | case NEXTHOP_TYPE_IFINDEX: | |
411 | break; | |
412 | case NEXTHOP_TYPE_IPV4: | |
413 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
414 | v6 = true; | |
415 | install_afi = AFI_IP; | |
416 | break; | |
417 | case NEXTHOP_TYPE_IPV6: | |
418 | case NEXTHOP_TYPE_IPV6_IFINDEX: | |
419 | v4 = true; | |
420 | install_afi = AFI_IP6; | |
421 | break; | |
422 | case NEXTHOP_TYPE_BLACKHOLE: | |
423 | bh = true; | |
e5c83d9b DS |
424 | break; |
425 | } | |
426 | } | |
427 | ||
268c24ee RW |
428 | /* Interface and/or blackhole nexthops only. */ |
429 | if (!v4 && !v6) | |
ff9799c3 | 430 | install_afi = AFI_MAX; |
ff9799c3 | 431 | |
e5c83d9b DS |
432 | if (!bh && v6 && v4) |
433 | DEBUGD(&pbr_dbg_nht, | |
5e81f5dd DS |
434 | "%s: Saw both V6 and V4 nexthops...using %s", __func__, |
435 | afi2str(install_afi)); | |
e5c83d9b DS |
436 | if (bh && (v6 || v4)) |
437 | DEBUGD(&pbr_dbg_nht, | |
438 | "%s: Saw blackhole nexthop(s) with %s%s%s nexthop(s), using AFI_MAX.", | |
5e81f5dd DS |
439 | __func__, v4 ? "v4" : "", (v4 && v6) ? " and " : "", |
440 | v6 ? "v6" : ""); | |
e5c83d9b DS |
441 | |
442 | return install_afi; | |
443 | } | |
444 | ||
445 | static void pbr_nht_install_nexthop_group(struct pbr_nexthop_group_cache *pnhgc, | |
446 | struct nexthop_group nhg) | |
447 | { | |
448 | afi_t install_afi; | |
aafac994 | 449 | enum nexthop_types_t nh_type = 0; |
e5c83d9b | 450 | |
aafac994 | 451 | install_afi = pbr_nht_which_afi(nhg, nh_type); |
e5c83d9b | 452 | |
e5c83d9b DS |
453 | route_add(pnhgc, nhg, install_afi); |
454 | } | |
455 | ||
456 | static void | |
457 | pbr_nht_uninstall_nexthop_group(struct pbr_nexthop_group_cache *pnhgc, | |
ff9799c3 | 458 | struct nexthop_group nhg, |
aafac994 | 459 | enum nexthop_types_t nh_type) |
e5c83d9b DS |
460 | { |
461 | afi_t install_afi; | |
462 | ||
aafac994 | 463 | install_afi = pbr_nht_which_afi(nhg, nh_type); |
e5c83d9b DS |
464 | |
465 | pnhgc->installed = false; | |
466 | pnhgc->valid = false; | |
467 | route_delete(pnhgc, install_afi); | |
468 | } | |
469 | ||
470 | void pbr_nht_change_group(const char *name) | |
471 | { | |
472 | struct nexthop_group_cmd *nhgc; | |
473 | struct pbr_nexthop_group_cache *pnhgc; | |
474 | struct pbr_nexthop_group_cache find; | |
475 | struct nexthop *nhop; | |
476 | ||
477 | nhgc = nhgc_find(name); | |
478 | if (!nhgc) | |
479 | return; | |
480 | ||
481 | memset(&find, 0, sizeof(find)); | |
6612590d | 482 | snprintf(find.name, sizeof(find.name), "%s", name); |
e5c83d9b DS |
483 | pnhgc = hash_lookup(pbr_nhg_hash, &find); |
484 | ||
485 | if (!pnhgc) { | |
486 | DEBUGD(&pbr_dbg_nht, | |
487 | "%s: Could not find nexthop-group cache w/ name '%s'", | |
5e81f5dd | 488 | __func__, name); |
e5c83d9b DS |
489 | return; |
490 | } | |
491 | ||
492 | for (ALL_NEXTHOPS(nhgc->nhg, nhop)) { | |
493 | struct pbr_nexthop_cache lookup; | |
494 | struct pbr_nexthop_cache *pnhc; | |
495 | ||
b13e5ad6 | 496 | lookup.nexthop = nhop; |
e5c83d9b DS |
497 | pnhc = hash_lookup(pnhgc->nhh, &lookup); |
498 | if (!pnhc) { | |
499 | pnhc = hash_get(pnhgc->nhh, &lookup, pbr_nh_alloc); | |
500 | pnhc->parent = pnhgc; | |
501 | } | |
502 | } | |
503 | pbr_nht_install_nexthop_group(pnhgc, nhgc->nhg); | |
504 | } | |
505 | ||
506 | char *pbr_nht_nexthop_make_name(char *name, size_t l, | |
507 | uint32_t seqno, char *buffer) | |
508 | { | |
509 | snprintf(buffer, l, "%s%u", name, seqno); | |
510 | return buffer; | |
511 | } | |
512 | ||
f143cffa SW |
513 | void pbr_nht_add_individual_nexthop(struct pbr_map_sequence *pbrms, |
514 | const struct nexthop *nhop) | |
e5c83d9b DS |
515 | { |
516 | struct pbr_nexthop_group_cache *pnhgc; | |
517 | struct pbr_nexthop_group_cache find; | |
518 | struct pbr_nexthop_cache *pnhc; | |
e5c83d9b | 519 | struct pbr_nexthop_cache lookup; |
f143cffa SW |
520 | struct nexthop *nh; |
521 | char buf[PBR_NHC_NAMELEN]; | |
522 | ||
523 | pbrms->nhg = nexthop_group_new(); | |
524 | pbrms->internal_nhg_name = XSTRDUP( | |
525 | MTYPE_TMP, | |
526 | pbr_nht_nexthop_make_name(pbrms->parent->name, PBR_NHC_NAMELEN, | |
527 | pbrms->seqno, buf)); | |
528 | ||
529 | nh = nexthop_new(); | |
530 | memcpy(nh, nhop, sizeof(*nh)); | |
531 | ||
532 | nexthop_group_add_sorted(pbrms->nhg, nh); | |
e5c83d9b | 533 | |
e5c83d9b | 534 | memset(&find, 0, sizeof(find)); |
06210d1f | 535 | pbr_nht_nexthop_make_name(pbrms->parent->name, PBR_NHC_NAMELEN, |
e5c83d9b | 536 | pbrms->seqno, find.name); |
a4044dc1 QY |
537 | |
538 | if (!pbr_nht_get_next_tableid(true)) { | |
539 | zlog_warn( | |
540 | "%s: Exhausted all table identifiers; cannot create nexthop-group cache for nexthop-group '%s'", | |
15569c58 | 541 | __func__, find.name); |
a4044dc1 QY |
542 | return; |
543 | } | |
544 | ||
e5c83d9b DS |
545 | if (!pbrms->internal_nhg_name) |
546 | pbrms->internal_nhg_name = XSTRDUP(MTYPE_TMP, find.name); | |
547 | ||
548 | pnhgc = hash_get(pbr_nhg_hash, &find, pbr_nhgc_alloc); | |
549 | ||
b13e5ad6 | 550 | lookup.nexthop = pbrms->nhg->nexthop; |
e5c83d9b DS |
551 | pnhc = hash_get(pnhgc->nhh, &lookup, pbr_nh_alloc); |
552 | pnhc->parent = pnhgc; | |
553 | pbr_nht_install_nexthop_group(pnhgc, *pbrms->nhg); | |
554 | } | |
555 | ||
f143cffa | 556 | static void pbr_nht_release_individual_nexthop(struct pbr_map_sequence *pbrms) |
e5c83d9b DS |
557 | { |
558 | struct pbr_nexthop_group_cache *pnhgc; | |
559 | struct pbr_nexthop_group_cache find; | |
560 | struct pbr_nexthop_cache *pnhc; | |
561 | struct pbr_nexthop_cache lup; | |
e5c83d9b | 562 | struct nexthop *nh; |
aafac994 | 563 | enum nexthop_types_t nh_type = 0; |
e5c83d9b | 564 | |
e5c83d9b | 565 | memset(&find, 0, sizeof(find)); |
6612590d | 566 | snprintf(find.name, sizeof(find.name), "%s", pbrms->internal_nhg_name); |
e5c83d9b DS |
567 | pnhgc = hash_lookup(pbr_nhg_hash, &find); |
568 | ||
569 | nh = pbrms->nhg->nexthop; | |
aafac994 | 570 | nh_type = nh->type; |
b13e5ad6 | 571 | lup.nexthop = nh; |
e5c83d9b DS |
572 | pnhc = hash_lookup(pnhgc->nhh, &lup); |
573 | pnhc->parent = NULL; | |
574 | hash_release(pnhgc->nhh, pnhc); | |
575 | pbr_nh_delete(&pnhc); | |
aafac994 | 576 | pbr_nht_uninstall_nexthop_group(pnhgc, *pbrms->nhg, nh_type); |
e5c83d9b DS |
577 | |
578 | hash_release(pbr_nhg_hash, pnhgc); | |
1f375577 | 579 | pbr_nhgc_delete(pnhgc); |
e5c83d9b | 580 | |
e5c83d9b DS |
581 | nexthop_group_delete(&pbrms->nhg); |
582 | XFREE(MTYPE_TMP, pbrms->internal_nhg_name); | |
583 | } | |
584 | ||
f143cffa SW |
585 | void pbr_nht_delete_individual_nexthop(struct pbr_map_sequence *pbrms) |
586 | { | |
587 | pbr_map_delete_nexthops(pbrms); | |
588 | ||
589 | pbr_nht_release_individual_nexthop(pbrms); | |
590 | } | |
591 | ||
b13e5ad6 | 592 | struct pbr_nexthop_group_cache *pbr_nht_add_group(const char *name) |
e5c83d9b DS |
593 | { |
594 | struct nexthop *nhop; | |
595 | struct nexthop_group_cmd *nhgc; | |
596 | struct pbr_nexthop_group_cache *pnhgc; | |
597 | struct pbr_nexthop_group_cache lookup; | |
598 | ||
a4044dc1 QY |
599 | if (!pbr_nht_get_next_tableid(true)) { |
600 | zlog_warn( | |
601 | "%s: Exhausted all table identifiers; cannot create nexthop-group cache for nexthop-group '%s'", | |
5e81f5dd | 602 | __func__, name); |
a4044dc1 QY |
603 | return NULL; |
604 | } | |
605 | ||
e5c83d9b DS |
606 | nhgc = nhgc_find(name); |
607 | ||
608 | if (!nhgc) { | |
a4044dc1 | 609 | DEBUGD(&pbr_dbg_nht, "%s: Could not find nhgc with name: %s\n", |
5e81f5dd | 610 | __func__, name); |
b13e5ad6 | 611 | return NULL; |
e5c83d9b DS |
612 | } |
613 | ||
6612590d | 614 | snprintf(lookup.name, sizeof(lookup.name), "%s", name); |
e5c83d9b | 615 | pnhgc = hash_get(pbr_nhg_hash, &lookup, pbr_nhgc_alloc); |
5e81f5dd | 616 | DEBUGD(&pbr_dbg_nht, "%s: Retrieved NHGC @ %p", __func__, pnhgc); |
e5c83d9b DS |
617 | |
618 | for (ALL_NEXTHOPS(nhgc->nhg, nhop)) { | |
7fe96307 | 619 | struct pbr_nexthop_cache lookupc; |
e5c83d9b DS |
620 | struct pbr_nexthop_cache *pnhc; |
621 | ||
7fe96307 A |
622 | lookupc.nexthop = nhop; |
623 | pnhc = hash_lookup(pnhgc->nhh, &lookupc); | |
e5c83d9b | 624 | if (!pnhc) { |
7fe96307 | 625 | pnhc = hash_get(pnhgc->nhh, &lookupc, pbr_nh_alloc); |
e5c83d9b DS |
626 | pnhc->parent = pnhgc; |
627 | } | |
628 | } | |
b13e5ad6 DS |
629 | |
630 | return pnhgc; | |
e5c83d9b DS |
631 | } |
632 | ||
633 | void pbr_nht_delete_group(const char *name) | |
634 | { | |
635 | struct pbr_map_sequence *pbrms; | |
636 | struct listnode *snode; | |
637 | struct pbr_map *pbrm; | |
b13e5ad6 DS |
638 | struct pbr_nexthop_group_cache pnhgc_find; |
639 | struct pbr_nexthop_group_cache *pnhgc; | |
e5c83d9b DS |
640 | |
641 | RB_FOREACH (pbrm, pbr_map_entry_head, &pbr_maps) { | |
642 | for (ALL_LIST_ELEMENTS_RO(pbrm->seqnumbers, snode, pbrms)) { | |
643 | if (pbrms->nhgrp_name | |
b13e5ad6 | 644 | && strmatch(pbrms->nhgrp_name, name)) { |
e5c83d9b | 645 | pbrms->reason |= PBR_MAP_INVALID_NO_NEXTHOPS; |
b13e5ad6 DS |
646 | pbrms->nhg = NULL; |
647 | pbrms->internal_nhg_name = NULL; | |
e5c83d9b DS |
648 | pbrm->valid = false; |
649 | } | |
650 | } | |
651 | } | |
b13e5ad6 DS |
652 | |
653 | strlcpy(pnhgc_find.name, name, sizeof(pnhgc_find.name)); | |
654 | pnhgc = hash_release(pbr_nhg_hash, &pnhgc_find); | |
655 | pbr_nhgc_delete(pnhgc); | |
e5c83d9b DS |
656 | } |
657 | ||
658 | bool pbr_nht_nexthop_valid(struct nexthop_group *nhg) | |
659 | { | |
15569c58 | 660 | DEBUGD(&pbr_dbg_nht, "%s: %p", __func__, nhg); |
e5c83d9b DS |
661 | return true; |
662 | } | |
663 | ||
664 | bool pbr_nht_nexthop_group_valid(const char *name) | |
665 | { | |
666 | struct pbr_nexthop_group_cache *pnhgc; | |
667 | struct pbr_nexthop_group_cache lookup; | |
668 | ||
15569c58 | 669 | DEBUGD(&pbr_dbg_nht, "%s: %s", __func__, name); |
e5c83d9b | 670 | |
6612590d | 671 | snprintf(lookup.name, sizeof(lookup.name), "%s", name); |
e5c83d9b DS |
672 | pnhgc = hash_get(pbr_nhg_hash, &lookup, NULL); |
673 | if (!pnhgc) | |
674 | return false; | |
15569c58 | 675 | DEBUGD(&pbr_dbg_nht, "%s: \t%d %d", __func__, pnhgc->valid, |
e5c83d9b DS |
676 | pnhgc->installed); |
677 | if (pnhgc->valid && pnhgc->installed) | |
678 | return true; | |
679 | ||
680 | return false; | |
681 | } | |
682 | ||
683 | struct pbr_nht_individual { | |
684 | struct zapi_route *nhr; | |
a106a408 | 685 | struct interface *ifp; |
e5c83d9b DS |
686 | |
687 | uint32_t valid; | |
688 | }; | |
689 | ||
8babeb1a SW |
690 | static bool |
691 | pbr_nht_individual_nexthop_gw_update(struct pbr_nexthop_cache *pnhc, | |
692 | const struct pbr_nht_individual *pnhi) | |
e5c83d9b | 693 | { |
8babeb1a | 694 | bool is_valid = pnhc->valid; |
e5c83d9b | 695 | |
8babeb1a SW |
696 | if (!pnhi->nhr) /* It doesn't care about non-nexthop updates */ |
697 | goto done; | |
e5c83d9b DS |
698 | |
699 | switch (pnhi->nhr->prefix.family) { | |
700 | case AF_INET: | |
b13e5ad6 | 701 | if (pnhc->nexthop->gate.ipv4.s_addr |
8babeb1a SW |
702 | != pnhi->nhr->prefix.u.prefix4.s_addr) |
703 | goto done; /* Unrelated change */ | |
e5c83d9b DS |
704 | break; |
705 | case AF_INET6: | |
b13e5ad6 DS |
706 | if (memcmp(&pnhc->nexthop->gate.ipv6, |
707 | &pnhi->nhr->prefix.u.prefix6, 16) | |
8babeb1a SW |
708 | != 0) |
709 | goto done; /* Unrelated change */ | |
710 | break; | |
711 | } | |
712 | ||
713 | if (!pnhi->nhr->nexthop_num) { | |
714 | is_valid = false; | |
715 | goto done; | |
716 | } | |
717 | ||
718 | if (pnhc->nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX | |
4550d5df | 719 | || pnhc->nexthop->type == NEXTHOP_TYPE_IPV6_IFINDEX) { |
8babeb1a SW |
720 | |
721 | /* GATEWAY_IFINDEX type shouldn't resolve to group */ | |
722 | if (pnhi->nhr->nexthop_num > 1) { | |
723 | is_valid = false; | |
724 | goto done; | |
725 | } | |
726 | ||
727 | /* If whatever we resolved to wasn't on the interface we | |
728 | * specified. (i.e. not a connected route), its invalid. | |
729 | */ | |
730 | if (pnhi->nhr->nexthops[0].ifindex != pnhc->nexthop->ifindex) { | |
731 | is_valid = false; | |
732 | goto done; | |
733 | } | |
734 | } | |
735 | ||
736 | is_valid = true; | |
737 | ||
738 | done: | |
739 | pnhc->valid = is_valid; | |
740 | ||
741 | return pnhc->valid; | |
742 | } | |
743 | ||
744 | static bool pbr_nht_individual_nexthop_interface_update( | |
745 | struct pbr_nexthop_cache *pnhc, const struct pbr_nht_individual *pnhi) | |
746 | { | |
747 | bool is_valid = pnhc->valid; | |
748 | ||
749 | if (!pnhi->ifp) /* It doesn't care about non-interface updates */ | |
750 | goto done; | |
751 | ||
752 | if (pnhc->nexthop->ifindex | |
753 | != pnhi->ifp->ifindex) /* Un-related interface */ | |
754 | goto done; | |
755 | ||
756 | is_valid = !!if_is_up(pnhi->ifp); | |
757 | ||
758 | done: | |
759 | pnhc->valid = is_valid; | |
760 | ||
761 | return pnhc->valid; | |
762 | } | |
763 | ||
764 | /* Given this update either from interface or nexthop tracking, re-validate this | |
765 | * nexthop. | |
766 | * | |
767 | * If the update is un-related, the subroutines shoud just return their cached | |
768 | * valid state. | |
769 | */ | |
770 | static void | |
771 | pbr_nht_individual_nexthop_update(struct pbr_nexthop_cache *pnhc, | |
772 | const struct pbr_nht_individual *pnhi) | |
773 | { | |
774 | assert(pnhi->nhr || pnhi->ifp); /* Either nexthop or interface update */ | |
775 | ||
776 | switch (pnhc->nexthop->type) { | |
777 | case NEXTHOP_TYPE_IFINDEX: | |
778 | pbr_nht_individual_nexthop_interface_update(pnhc, pnhi); | |
779 | break; | |
cb254f41 SW |
780 | case NEXTHOP_TYPE_IPV6_IFINDEX: |
781 | if (IN6_IS_ADDR_LINKLOCAL(&pnhc->nexthop->gate.ipv6)) { | |
782 | pbr_nht_individual_nexthop_interface_update(pnhc, pnhi); | |
783 | break; | |
784 | } | |
785 | /* Intentional fall thru */ | |
786 | case NEXTHOP_TYPE_IPV4_IFINDEX: | |
8babeb1a SW |
787 | case NEXTHOP_TYPE_IPV4: |
788 | case NEXTHOP_TYPE_IPV6: | |
8babeb1a SW |
789 | pbr_nht_individual_nexthop_gw_update(pnhc, pnhi); |
790 | break; | |
791 | case NEXTHOP_TYPE_BLACKHOLE: | |
792 | pnhc->valid = true; | |
e5c83d9b DS |
793 | break; |
794 | } | |
8babeb1a SW |
795 | } |
796 | ||
797 | static void pbr_nht_individual_nexthop_update_lookup(struct hash_bucket *b, | |
798 | void *data) | |
799 | { | |
800 | struct pbr_nexthop_cache *pnhc = b->data; | |
801 | struct pbr_nht_individual *pnhi = data; | |
802 | char buf[PREFIX_STRLEN]; | |
803 | bool old_valid; | |
804 | ||
805 | old_valid = pnhc->valid; | |
806 | ||
807 | pbr_nht_individual_nexthop_update(pnhc, pnhi); | |
e5c83d9b DS |
808 | |
809 | DEBUGD(&pbr_dbg_nht, "\tFound %s: old: %d new: %d", | |
810 | prefix2str(&pnhi->nhr->prefix, buf, sizeof(buf)), old_valid, | |
811 | pnhc->valid); | |
812 | ||
e5c83d9b DS |
813 | if (pnhc->valid) |
814 | pnhi->valid += 1; | |
815 | } | |
816 | ||
b822b93a SW |
817 | static void pbr_nexthop_group_cache_iterate_to_group(struct hash_bucket *b, |
818 | void *data) | |
819 | { | |
820 | struct pbr_nexthop_cache *pnhc = b->data; | |
821 | struct nexthop_group *nhg = data; | |
822 | struct nexthop *nh = NULL; | |
823 | ||
824 | copy_nexthops(&nh, pnhc->nexthop, NULL); | |
825 | ||
50d89650 | 826 | _nexthop_add(&nhg->nexthop, nh); |
b822b93a SW |
827 | } |
828 | ||
829 | static void | |
830 | pbr_nexthop_group_cache_to_nexthop_group(struct nexthop_group *nhg, | |
831 | struct pbr_nexthop_group_cache *pnhgc) | |
832 | { | |
833 | hash_iterate(pnhgc->nhh, pbr_nexthop_group_cache_iterate_to_group, nhg); | |
834 | } | |
835 | ||
e3b78da8 | 836 | static void pbr_nht_nexthop_update_lookup(struct hash_bucket *b, void *data) |
e5c83d9b DS |
837 | { |
838 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
8babeb1a | 839 | struct pbr_nht_individual pnhi = {}; |
b822b93a | 840 | struct nexthop_group nhg = {}; |
b13e5ad6 DS |
841 | bool old_valid; |
842 | ||
843 | old_valid = pnhgc->valid; | |
e5c83d9b DS |
844 | |
845 | pnhi.nhr = (struct zapi_route *)data; | |
846 | pnhi.valid = 0; | |
847 | hash_iterate(pnhgc->nhh, pbr_nht_individual_nexthop_update_lookup, | |
848 | &pnhi); | |
849 | ||
850 | /* | |
851 | * If any of the specified nexthops are valid we are valid | |
852 | */ | |
853 | pnhgc->valid = !!pnhi.valid; | |
b13e5ad6 | 854 | |
b822b93a SW |
855 | if (pnhgc->valid) { |
856 | pbr_nexthop_group_cache_to_nexthop_group(&nhg, pnhgc); | |
857 | pbr_nht_install_nexthop_group(pnhgc, nhg); | |
858 | /* Don't need copied nexthops anymore */ | |
859 | nexthops_free(nhg.nexthop); | |
860 | } | |
861 | ||
b13e5ad6 DS |
862 | if (old_valid != pnhgc->valid) |
863 | pbr_map_check_nh_group_change(pnhgc->name); | |
e5c83d9b DS |
864 | } |
865 | ||
866 | void pbr_nht_nexthop_update(struct zapi_route *nhr) | |
867 | { | |
868 | hash_iterate(pbr_nhg_hash, pbr_nht_nexthop_update_lookup, nhr); | |
869 | } | |
870 | ||
a106a408 | 871 | static void |
7f5818fb | 872 | pbr_nht_individual_nexthop_interface_update_lookup(struct hash_bucket *b, |
a106a408 RW |
873 | void *data) |
874 | { | |
875 | struct pbr_nexthop_cache *pnhc = b->data; | |
876 | struct pbr_nht_individual *pnhi = data; | |
877 | bool old_valid; | |
878 | ||
879 | old_valid = pnhc->valid; | |
880 | ||
8babeb1a | 881 | pbr_nht_individual_nexthop_update(pnhc, pnhi); |
a106a408 RW |
882 | |
883 | DEBUGD(&pbr_dbg_nht, "\tFound %s: old: %d new: %d", pnhi->ifp->name, | |
884 | old_valid, pnhc->valid); | |
885 | ||
886 | if (pnhc->valid) | |
887 | pnhi->valid += 1; | |
888 | } | |
889 | ||
7f5818fb | 890 | static void pbr_nht_nexthop_interface_update_lookup(struct hash_bucket *b, |
a106a408 RW |
891 | void *data) |
892 | { | |
893 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
8babeb1a | 894 | struct pbr_nht_individual pnhi = {}; |
a106a408 RW |
895 | bool old_valid; |
896 | ||
897 | old_valid = pnhgc->valid; | |
898 | ||
899 | pnhi.ifp = data; | |
900 | pnhi.valid = 0; | |
901 | hash_iterate(pnhgc->nhh, | |
902 | pbr_nht_individual_nexthop_interface_update_lookup, &pnhi); | |
903 | ||
904 | /* | |
905 | * If any of the specified nexthops are valid we are valid | |
906 | */ | |
907 | pnhgc->valid = !!pnhi.valid; | |
908 | ||
909 | if (old_valid != pnhgc->valid) | |
910 | pbr_map_check_nh_group_change(pnhgc->name); | |
911 | } | |
912 | ||
913 | void pbr_nht_nexthop_interface_update(struct interface *ifp) | |
914 | { | |
915 | hash_iterate(pbr_nhg_hash, pbr_nht_nexthop_interface_update_lookup, | |
916 | ifp); | |
917 | } | |
918 | ||
d8b87afe | 919 | static uint32_t pbr_nhg_hash_key(const void *arg) |
e5c83d9b | 920 | { |
d8b87afe | 921 | const struct pbr_nexthop_group_cache *nhgc = arg; |
e5c83d9b DS |
922 | |
923 | return jhash(&nhgc->name, strlen(nhgc->name), 0x52c34a96); | |
924 | } | |
925 | ||
74df8d6d | 926 | static bool pbr_nhg_hash_equal(const void *arg1, const void *arg2) |
e5c83d9b DS |
927 | { |
928 | const struct pbr_nexthop_group_cache *nhgc1 = | |
929 | (const struct pbr_nexthop_group_cache *)arg1; | |
930 | const struct pbr_nexthop_group_cache *nhgc2 = | |
931 | (const struct pbr_nexthop_group_cache *)arg2; | |
932 | ||
933 | return !strcmp(nhgc1->name, nhgc2->name); | |
934 | } | |
935 | ||
a4044dc1 | 936 | uint32_t pbr_nht_get_next_tableid(bool peek) |
e5c83d9b DS |
937 | { |
938 | uint32_t i; | |
939 | bool found = false; | |
940 | ||
941 | for (i = pbr_nhg_low_table; i <= pbr_nhg_high_table; i++) { | |
d8729f8c | 942 | if (!nhg_tableid[i]) { |
e5c83d9b DS |
943 | found = true; |
944 | break; | |
945 | } | |
946 | } | |
947 | ||
948 | if (found) { | |
a4044dc1 | 949 | nhg_tableid[i] = !peek; |
e5c83d9b DS |
950 | return i; |
951 | } else | |
952 | return 0; | |
953 | } | |
954 | ||
955 | void pbr_nht_set_tableid_range(uint32_t low, uint32_t high) | |
956 | { | |
957 | pbr_nhg_low_table = low; | |
958 | pbr_nhg_high_table = high; | |
959 | } | |
960 | ||
961 | void pbr_nht_write_table_range(struct vty *vty) | |
962 | { | |
963 | if (pbr_nhg_low_table != PBR_NHT_DEFAULT_LOW_TABLEID | |
964 | || pbr_nhg_high_table != PBR_NHT_DEFAULT_HIGH_TABLEID) { | |
965 | vty_out(vty, "pbr table range %u %u\n", pbr_nhg_low_table, | |
966 | pbr_nhg_high_table); | |
967 | } | |
968 | } | |
969 | ||
970 | uint32_t pbr_nht_get_next_rule(uint32_t seqno) | |
971 | { | |
972 | return seqno + pbr_nhg_low_rule - 1; | |
973 | } | |
974 | void pbr_nht_set_rule_range(uint32_t low, uint32_t high) | |
975 | { | |
976 | pbr_nhg_low_rule = low; | |
977 | pbr_nhg_high_rule = high; | |
978 | } | |
979 | ||
980 | void pbr_nht_write_rule_range(struct vty *vty) | |
981 | { | |
982 | if (pbr_nhg_low_rule != PBR_NHT_DEFAULT_LOW_RULE | |
983 | || pbr_nhg_high_rule != PBR_NHT_DEFAULT_HIGH_RULE) { | |
984 | vty_out(vty, "pbr rule range %u %u\n", pbr_nhg_low_rule, | |
985 | pbr_nhg_high_rule); | |
986 | } | |
987 | } | |
988 | ||
989 | uint32_t pbr_nht_get_table(const char *name) | |
990 | { | |
991 | struct pbr_nexthop_group_cache find; | |
992 | struct pbr_nexthop_group_cache *pnhgc; | |
993 | ||
994 | memset(&find, 0, sizeof(find)); | |
6612590d | 995 | snprintf(find.name, sizeof(find.name), "%s", name); |
e5c83d9b DS |
996 | pnhgc = hash_lookup(pbr_nhg_hash, &find); |
997 | ||
998 | if (!pnhgc) { | |
999 | DEBUGD(&pbr_dbg_nht, | |
1000 | "%s: Could not find nexthop-group cache w/ name '%s'", | |
15569c58 | 1001 | __func__, name); |
e5c83d9b DS |
1002 | return 5000; |
1003 | } | |
1004 | ||
1005 | return pnhgc->table_id; | |
1006 | } | |
1007 | ||
1008 | bool pbr_nht_get_installed(const char *name) | |
1009 | { | |
1010 | struct pbr_nexthop_group_cache find; | |
1011 | struct pbr_nexthop_group_cache *pnhgc; | |
1012 | ||
1013 | memset(&find, 0, sizeof(find)); | |
6612590d | 1014 | snprintf(find.name, sizeof(find.name), "%s", name); |
e5c83d9b DS |
1015 | |
1016 | pnhgc = hash_lookup(pbr_nhg_hash, &find); | |
1017 | ||
d3765386 | 1018 | if (!pnhgc) |
e5c83d9b | 1019 | return false; |
e5c83d9b DS |
1020 | |
1021 | return pnhgc->installed; | |
1022 | } | |
1023 | ||
e3b78da8 | 1024 | static void pbr_nht_show_nhg_nexthops(struct hash_bucket *b, void *data) |
e5c83d9b DS |
1025 | { |
1026 | struct pbr_nexthop_cache *pnhc = b->data; | |
1027 | struct vty *vty = data; | |
1028 | ||
57cdafc4 | 1029 | vty_out(vty, "\tValid: %d ", pnhc->valid); |
b13e5ad6 | 1030 | nexthop_group_write_nexthop(vty, pnhc->nexthop); |
e5c83d9b DS |
1031 | } |
1032 | ||
010dd8ed WC |
1033 | static void pbr_nht_json_nhg_nexthops(struct hash_bucket *b, void *data) |
1034 | { | |
1035 | struct pbr_nexthop_cache *pnhc = b->data; | |
1036 | json_object *all_hops = data; | |
1037 | json_object *this_hop; | |
1038 | ||
1039 | this_hop = json_object_new_object(); | |
1040 | json_object_boolean_add(this_hop, "valid", pnhc->valid); | |
1041 | nexthop_group_json_nexthop(this_hop, pnhc->nexthop); | |
1042 | ||
1043 | json_object_array_add(all_hops, this_hop); | |
1044 | } | |
1045 | ||
e5c83d9b DS |
1046 | struct pbr_nht_show { |
1047 | struct vty *vty; | |
010dd8ed | 1048 | json_object *json; |
e5c83d9b DS |
1049 | const char *name; |
1050 | }; | |
1051 | ||
e3b78da8 | 1052 | static void pbr_nht_show_nhg(struct hash_bucket *b, void *data) |
e5c83d9b DS |
1053 | { |
1054 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
1055 | struct pbr_nht_show *pns = data; | |
1056 | struct vty *vty; | |
1057 | ||
1058 | if (pns->name && strcmp(pns->name, pnhgc->name) != 0) | |
1059 | return; | |
1060 | ||
1061 | vty = pns->vty; | |
1062 | vty_out(vty, "Nexthop-Group: %s Table: %u Valid: %d Installed: %d\n", | |
1063 | pnhgc->name, pnhgc->table_id, pnhgc->valid, pnhgc->installed); | |
1064 | ||
1065 | hash_iterate(pnhgc->nhh, pbr_nht_show_nhg_nexthops, vty); | |
1066 | } | |
1067 | ||
010dd8ed WC |
1068 | static void pbr_nht_json_nhg(struct hash_bucket *b, void *data) |
1069 | { | |
1070 | struct pbr_nexthop_group_cache *pnhgc = b->data; | |
1071 | struct pbr_nht_show *pns = data; | |
1072 | json_object *j, *this_group, *group_hops; | |
1073 | ||
1074 | if (pns->name && strcmp(pns->name, pnhgc->name) != 0) | |
1075 | return; | |
1076 | ||
1077 | j = pns->json; | |
1078 | this_group = json_object_new_object(); | |
1079 | ||
1080 | if (!j || !this_group) | |
1081 | return; | |
1082 | ||
1083 | json_object_string_add(this_group, "name", pnhgc->name); | |
1084 | json_object_int_add(this_group, "id", pnhgc->table_id); | |
1085 | json_object_boolean_add(this_group, "valid", pnhgc->valid); | |
1086 | json_object_boolean_add(this_group, "installed", pnhgc->installed); | |
1087 | ||
1088 | group_hops = json_object_new_array(); | |
1089 | ||
1090 | if (group_hops) { | |
1091 | hash_iterate(pnhgc->nhh, pbr_nht_json_nhg_nexthops, group_hops); | |
1092 | json_object_object_add(this_group, "nexthops", group_hops); | |
1093 | } | |
1094 | ||
1095 | json_object_object_add(j, pnhgc->name, this_group); | |
1096 | } | |
1097 | ||
e5c83d9b DS |
1098 | void pbr_nht_show_nexthop_group(struct vty *vty, const char *name) |
1099 | { | |
1100 | struct pbr_nht_show pns; | |
1101 | ||
1102 | pns.vty = vty; | |
1103 | pns.name = name; | |
1104 | ||
1105 | hash_iterate(pbr_nhg_hash, pbr_nht_show_nhg, &pns); | |
1106 | } | |
1107 | ||
010dd8ed WC |
1108 | void pbr_nht_json_nexthop_group(json_object *j, const char *name) |
1109 | { | |
1110 | struct pbr_nht_show pns; | |
1111 | ||
1112 | pns.name = name; | |
1113 | pns.json = j; | |
1114 | ||
1115 | hash_iterate(pbr_nhg_hash, pbr_nht_json_nhg, &pns); | |
1116 | } | |
1117 | ||
e5c83d9b DS |
1118 | void pbr_nht_init(void) |
1119 | { | |
1120 | pbr_nhg_hash = hash_create_size( | |
1121 | 16, pbr_nhg_hash_key, pbr_nhg_hash_equal, "PBR NHG Cache Hash"); | |
b13e5ad6 | 1122 | pbr_nhrc_hash = |
d8b87afe | 1123 | hash_create_size(16, (unsigned int (*)(const void *))nexthop_hash, |
b13e5ad6 | 1124 | pbr_nhrc_hash_equal, "PBR NH Hash"); |
e5c83d9b DS |
1125 | |
1126 | pbr_nhg_low_table = PBR_NHT_DEFAULT_LOW_TABLEID; | |
1127 | pbr_nhg_high_table = PBR_NHT_DEFAULT_HIGH_TABLEID; | |
1128 | pbr_nhg_low_rule = PBR_NHT_DEFAULT_LOW_RULE; | |
1129 | pbr_nhg_high_rule = PBR_NHT_DEFAULT_HIGH_RULE; | |
1130 | memset(&nhg_tableid, 0, 65535 * sizeof(uint8_t)); | |
1131 | } |