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b583b035 AK |
1 | /* PIM support for VxLAN BUM flooding |
2 | * | |
3 | * Copyright (C) 2019 Cumulus Networks, Inc. | |
4 | * | |
5 | * This file is part of FRR. | |
6 | * | |
7 | * FRR is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * FRR is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * This program is free software; you can redistribute it and/or modify | |
17 | * it under the terms of the GNU General Public License as published by | |
18 | * the Free Software Foundation; either version 2 of the License, or | |
19 | * (at your option) any later version. | |
20 | */ | |
21 | ||
22 | #include <zebra.h> | |
23 | ||
24 | #include <hash.h> | |
25 | #include <jhash.h> | |
26 | #include <log.h> | |
27 | #include <prefix.h> | |
28 | #include <vrf.h> | |
29 | ||
30 | #include "pimd.h" | |
31 | #include "pim_iface.h" | |
32 | #include "pim_memory.h" | |
33 | #include "pim_oil.h" | |
34 | #include "pim_register.h" | |
35 | #include "pim_str.h" | |
36 | #include "pim_upstream.h" | |
37 | #include "pim_ifchannel.h" | |
38 | #include "pim_nht.h" | |
39 | #include "pim_zebra.h" | |
40 | #include "pim_vxlan.h" | |
41 | ||
d889ab75 AK |
42 | /* pim-vxlan global info */ |
43 | struct pim_vxlan vxlan_info, *pim_vxlan_p = &vxlan_info; | |
b583b035 | 44 | |
b9f3a51c | 45 | static void pim_vxlan_work_timer_setup(bool start); |
48b33862 AK |
46 | static void pim_vxlan_set_peerlink_rif(struct pim_instance *pim, |
47 | struct interface *ifp); | |
b9f3a51c AK |
48 | |
49 | /*************************** vxlan work list ********************************** | |
50 | * A work list is maintained for staggered generation of pim null register | |
51 | * messages for vxlan SG entries that are in a reg_join state. | |
52 | * | |
53 | * A max of 500 NULL registers are generated at one shot. If paused reg | |
54 | * generation continues on the next second and so on till all register | |
55 | * messages have been sent out. And the process is restarted every 60s. | |
56 | * | |
57 | * purpose of this null register generation is to setup the SPT and maintain | |
58 | * independent of the presence of overlay BUM traffic. | |
59 | ****************************************************************************/ | |
60 | static void pim_vxlan_do_reg_work(void) | |
61 | { | |
62 | struct listnode *listnode; | |
63 | int work_cnt = 0; | |
64 | struct pim_vxlan_sg *vxlan_sg; | |
65 | static int sec_count; | |
66 | ||
67 | ++sec_count; | |
68 | ||
69 | if (sec_count > PIM_VXLAN_NULL_REG_INTERVAL) { | |
70 | sec_count = 0; | |
71 | listnode = vxlan_info.next_work ? | |
72 | vxlan_info.next_work : | |
73 | vxlan_info.work_list->head; | |
74 | if (PIM_DEBUG_VXLAN && listnode) | |
75 | zlog_debug("vxlan SG work %s", | |
76 | vxlan_info.next_work ? "continues" : "starts"); | |
77 | } else { | |
78 | listnode = vxlan_info.next_work; | |
79 | } | |
80 | ||
81 | for (; listnode; listnode = listnode->next) { | |
82 | vxlan_sg = (struct pim_vxlan_sg *)listnode->data; | |
83 | if (vxlan_sg->up && (vxlan_sg->up->reg_state == PIM_REG_JOIN)) { | |
84 | if (PIM_DEBUG_VXLAN) | |
85 | zlog_debug("vxlan SG %s periodic NULL register", | |
86 | vxlan_sg->sg_str); | |
87 | pim_null_register_send(vxlan_sg->up); | |
88 | ++work_cnt; | |
89 | } | |
90 | ||
91 | if (work_cnt > vxlan_info.max_work_cnt) { | |
92 | vxlan_info.next_work = listnode->next; | |
93 | if (PIM_DEBUG_VXLAN) | |
94 | zlog_debug("vxlan SG %d work items proc and pause", | |
95 | work_cnt); | |
96 | return; | |
97 | } | |
98 | } | |
99 | ||
100 | if (work_cnt) { | |
101 | if (PIM_DEBUG_VXLAN) | |
102 | zlog_debug("vxlan SG %d work items proc", work_cnt); | |
103 | } | |
104 | vxlan_info.next_work = NULL; | |
105 | } | |
106 | ||
107 | /* Staggered work related info is initialized when the first work comes | |
108 | * along | |
109 | */ | |
110 | static void pim_vxlan_init_work(void) | |
111 | { | |
112 | if (vxlan_info.flags & PIM_VXLANF_WORK_INITED) | |
113 | return; | |
114 | ||
115 | vxlan_info.max_work_cnt = PIM_VXLAN_WORK_MAX; | |
116 | vxlan_info.flags |= PIM_VXLANF_WORK_INITED; | |
117 | vxlan_info.work_list = list_new(); | |
2951a7a4 | 118 | pim_vxlan_work_timer_setup(true/* start */); |
b9f3a51c AK |
119 | } |
120 | ||
121 | static void pim_vxlan_add_work(struct pim_vxlan_sg *vxlan_sg) | |
122 | { | |
123 | if (vxlan_sg->flags & PIM_VXLAN_SGF_DEL_IN_PROG) { | |
124 | if (PIM_DEBUG_VXLAN) | |
125 | zlog_debug("vxlan SG %s skip work list; del-in-prog", | |
126 | vxlan_sg->sg_str); | |
127 | return; | |
128 | } | |
129 | ||
130 | pim_vxlan_init_work(); | |
131 | ||
132 | /* already a part of the work list */ | |
133 | if (vxlan_sg->work_node) | |
134 | return; | |
135 | ||
136 | if (PIM_DEBUG_VXLAN) | |
137 | zlog_debug("vxlan SG %s work list add", | |
138 | vxlan_sg->sg_str); | |
139 | vxlan_sg->work_node = listnode_add(vxlan_info.work_list, vxlan_sg); | |
140 | /* XXX: adjust max_work_cnt if needed */ | |
141 | } | |
142 | ||
143 | static void pim_vxlan_del_work(struct pim_vxlan_sg *vxlan_sg) | |
144 | { | |
145 | if (!vxlan_sg->work_node) | |
146 | return; | |
147 | ||
148 | if (PIM_DEBUG_VXLAN) | |
149 | zlog_debug("vxlan SG %s work list del", | |
150 | vxlan_sg->sg_str); | |
151 | ||
152 | if (vxlan_sg->work_node == vxlan_info.next_work) | |
153 | vxlan_info.next_work = vxlan_sg->work_node->next; | |
154 | ||
155 | list_delete_node(vxlan_info.work_list, vxlan_sg->work_node); | |
156 | vxlan_sg->work_node = NULL; | |
157 | } | |
158 | ||
159 | void pim_vxlan_update_sg_reg_state(struct pim_instance *pim, | |
160 | struct pim_upstream *up, bool reg_join) | |
161 | { | |
162 | struct pim_vxlan_sg *vxlan_sg; | |
163 | ||
164 | vxlan_sg = pim_vxlan_sg_find(pim, &up->sg); | |
165 | if (!vxlan_sg) | |
166 | return; | |
167 | ||
168 | /* add the vxlan sg entry to a work list for periodic reg joins. | |
169 | * the entry will stay in the list as long as the register state is | |
170 | * PIM_REG_JOIN | |
171 | */ | |
172 | if (reg_join) | |
173 | pim_vxlan_add_work(vxlan_sg); | |
174 | else | |
175 | pim_vxlan_del_work(vxlan_sg); | |
176 | } | |
177 | ||
178 | static int pim_vxlan_work_timer_cb(struct thread *t) | |
179 | { | |
180 | pim_vxlan_do_reg_work(); | |
181 | pim_vxlan_work_timer_setup(true /* start */); | |
182 | return 0; | |
183 | } | |
184 | ||
185 | /* global 1second timer used for periodic processing */ | |
186 | static void pim_vxlan_work_timer_setup(bool start) | |
187 | { | |
188 | THREAD_OFF(vxlan_info.work_timer); | |
189 | if (start) | |
190 | thread_add_timer(router->master, pim_vxlan_work_timer_cb, NULL, | |
191 | PIM_VXLAN_WORK_TIME, &vxlan_info.work_timer); | |
192 | } | |
193 | ||
a513da36 AK |
194 | /**************************** vxlan origination mroutes *********************** |
195 | * For every (local-vtep-ip, bum-mcast-grp) registered by evpn an origination | |
196 | * mroute is setup by pimd. The purpose of this mroute is to forward vxlan | |
197 | * encapsulated BUM (broadcast, unknown-unicast and unknown-multicast packets | |
198 | * over the underlay.) | |
199 | * | |
200 | * Sample mroute (single VTEP): | |
201 | * (27.0.0.7, 239.1.1.100) Iif: lo Oifs: uplink-1 | |
202 | * | |
203 | * Sample mroute (anycast VTEP): | |
204 | * (36.0.0.9, 239.1.1.100) Iif: peerlink-3.4094\ | |
205 | * Oifs: peerlink-3.4094 uplink-1 | |
206 | ***************************************************************************/ | |
207 | static void pim_vxlan_orig_mr_up_del(struct pim_vxlan_sg *vxlan_sg) | |
208 | { | |
209 | struct pim_upstream *up = vxlan_sg->up; | |
210 | ||
211 | if (!up) | |
212 | return; | |
213 | ||
214 | if (PIM_DEBUG_VXLAN) | |
215 | zlog_debug("vxlan SG %s orig mroute-up del", | |
216 | vxlan_sg->sg_str); | |
217 | ||
218 | vxlan_sg->up = NULL; | |
219 | if (up->flags & PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG) { | |
220 | /* clear out all the vxlan properties */ | |
221 | up->flags &= ~(PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG | | |
222 | PIM_UPSTREAM_FLAG_MASK_STATIC_IIF | | |
223 | PIM_UPSTREAM_FLAG_MASK_DISABLE_KAT_EXPIRY | | |
224 | PIM_UPSTREAM_FLAG_MASK_FORCE_PIMREG | | |
225 | PIM_UPSTREAM_FLAG_MASK_NO_PIMREG_DATA | | |
226 | PIM_UPSTREAM_FLAG_MASK_ALLOW_IIF_IN_OIL); | |
227 | ||
228 | /* We bring things to a grinding halt by force expirying | |
229 | * the kat. Doing this will also remove the reference we | |
230 | * created as a "vxlan" source and delete the upstream entry | |
231 | * if there are no other references. | |
232 | */ | |
233 | if (PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) { | |
234 | THREAD_OFF(up->t_ka_timer); | |
235 | up = pim_upstream_keep_alive_timer_proc(up); | |
236 | } else { | |
237 | /* this is really unexpected as we force vxlan | |
238 | * origination mroutes active sources but just in | |
239 | * case | |
240 | */ | |
241 | up = pim_upstream_del(vxlan_sg->pim, up, | |
242 | __PRETTY_FUNCTION__); | |
243 | } | |
244 | /* if there are other references register the source | |
245 | * for nht | |
246 | */ | |
247 | if (up) | |
ae14da48 | 248 | pim_rpf_update(vxlan_sg->pim, up, NULL); |
a513da36 AK |
249 | } |
250 | } | |
251 | ||
252 | static void pim_vxlan_orig_mr_up_iif_update(struct pim_vxlan_sg *vxlan_sg) | |
253 | { | |
a513da36 AK |
254 | /* update MFC with the new IIF */ |
255 | pim_upstream_fill_static_iif(vxlan_sg->up, vxlan_sg->iif); | |
7984af18 | 256 | pim_upstream_mroute_iif_update(vxlan_sg->up->channel_oil, __func__); |
a513da36 AK |
257 | |
258 | if (PIM_DEBUG_VXLAN) | |
7984af18 | 259 | zlog_debug("vxlan SG %s orig mroute-up updated with iif %s", |
a513da36 | 260 | vxlan_sg->sg_str, |
7984af18 | 261 | vxlan_sg->iif?vxlan_sg->iif->name:"-"); |
a513da36 AK |
262 | |
263 | } | |
264 | ||
265 | /* For every VxLAN BUM multicast group we setup a SG-up that has the following | |
266 | * "forced properties" - | |
267 | * 1. Directly connected on a DR interface i.e. we must act as an FHR | |
268 | * 2. We prime the pump i.e. no multicast data is needed to register this | |
269 | * source with the FHR. To do that we send periodic null registers if | |
270 | * the SG entry is in a register-join state. We also prevent expiry of | |
271 | * KAT. | |
272 | * 3. As this SG is setup without data there is no need to register encapsulate | |
273 | * data traffic. This encapsulation is explicitly skipped for the following | |
274 | * reasons - | |
275 | * a) Many levels of encapsulation are needed creating MTU disc challenges. | |
276 | * Overlay BUM is encapsulated in a vxlan/UDP/IP header and then | |
277 | * encapsulated again in a pim-register header. | |
278 | * b) On a vxlan-aa setup both switches rx a copy of each BUM packet. if | |
279 | * they both reg encapsulated traffic the RP will accept the duplicates | |
280 | * as there are no RPF checks for this encapsulated data. | |
281 | * a), b) can be workarounded if needed, but there is really no need because | |
282 | * of (2) i.e. the pump is primed without data. | |
283 | */ | |
284 | static void pim_vxlan_orig_mr_up_add(struct pim_vxlan_sg *vxlan_sg) | |
285 | { | |
286 | struct pim_upstream *up; | |
287 | int flags = 0; | |
288 | struct prefix nht_p; | |
5923b739 | 289 | struct pim_instance *pim = vxlan_sg->pim; |
a513da36 AK |
290 | |
291 | if (vxlan_sg->up) { | |
292 | /* nothing to do */ | |
293 | return; | |
294 | } | |
295 | ||
296 | if (PIM_DEBUG_VXLAN) | |
297 | zlog_debug("vxlan SG %s orig mroute-up add with iif %s", | |
298 | vxlan_sg->sg_str, | |
299 | vxlan_sg->iif?vxlan_sg->iif->name:"-"); | |
300 | ||
301 | PIM_UPSTREAM_FLAG_SET_SRC_VXLAN_ORIG(flags); | |
302 | /* pin the IIF to lo or peerlink-subinterface and disable NHT */ | |
303 | PIM_UPSTREAM_FLAG_SET_STATIC_IIF(flags); | |
304 | /* Fake traffic by setting SRC_STREAM and starting KAT */ | |
305 | /* We intentionally skip updating ref count for SRC_STREAM/FHR. | |
306 | * Setting SRC_VXLAN should have already created a reference | |
307 | * preventing the entry from being deleted | |
308 | */ | |
309 | PIM_UPSTREAM_FLAG_SET_FHR(flags); | |
310 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(flags); | |
311 | /* Force pimreg even if non-DR. This is needed on a MLAG setup for | |
312 | * VxLAN AA | |
313 | */ | |
314 | PIM_UPSTREAM_FLAG_SET_FORCE_PIMREG(flags); | |
315 | /* prevent KAT expiry. we want the MDT setup even if there is no BUM | |
316 | * traffic | |
317 | */ | |
318 | PIM_UPSTREAM_FLAG_SET_DISABLE_KAT_EXPIRY(flags); | |
319 | /* SPT for vxlan BUM groups is primed and maintained via NULL | |
320 | * registers so there is no need to reg-encapsulate | |
321 | * vxlan-encapsulated overlay data traffic | |
322 | */ | |
323 | PIM_UPSTREAM_FLAG_SET_NO_PIMREG_DATA(flags); | |
324 | /* On a MLAG setup we force a copy to the MLAG peer while also | |
325 | * accepting traffic from the peer. To do this we set peerlink-rif as | |
326 | * the IIF and also add it to the OIL | |
327 | */ | |
328 | PIM_UPSTREAM_FLAG_SET_ALLOW_IIF_IN_OIL(flags); | |
329 | ||
330 | /* XXX: todo: defer pim_upstream add if pim is not enabled on the iif */ | |
331 | up = pim_upstream_find(vxlan_sg->pim, &vxlan_sg->sg); | |
332 | if (up) { | |
333 | /* if the iif is set to something other than the vxlan_sg->iif | |
334 | * we must dereg the old nexthop and force to new "static" | |
335 | * iif | |
336 | */ | |
337 | if (!PIM_UPSTREAM_FLAG_TEST_STATIC_IIF(up->flags)) { | |
338 | nht_p.family = AF_INET; | |
339 | nht_p.prefixlen = IPV4_MAX_BITLEN; | |
340 | nht_p.u.prefix4 = up->upstream_addr; | |
341 | pim_delete_tracked_nexthop(vxlan_sg->pim, | |
4533b847 | 342 | &nht_p, up, NULL, false); |
a513da36 | 343 | } |
69e3538c AK |
344 | /* We are acting FHR; clear out use_rpt setting if any */ |
345 | pim_upstream_update_use_rpt(up, false /*update_mroute*/); | |
a513da36 AK |
346 | pim_upstream_ref(up, flags, __PRETTY_FUNCTION__); |
347 | vxlan_sg->up = up; | |
348 | pim_vxlan_orig_mr_up_iif_update(vxlan_sg); | |
5923b739 AK |
349 | /* mute pimreg on origination mroutes */ |
350 | if (pim->regiface) | |
351 | pim_channel_update_oif_mute(up->channel_oil, | |
352 | pim->regiface->info); | |
a513da36 AK |
353 | } else { |
354 | up = pim_upstream_add(vxlan_sg->pim, &vxlan_sg->sg, | |
355 | vxlan_sg->iif, flags, | |
356 | __PRETTY_FUNCTION__, NULL); | |
357 | vxlan_sg->up = up; | |
358 | } | |
359 | ||
360 | if (!up) { | |
361 | if (PIM_DEBUG_VXLAN) | |
362 | zlog_debug("vxlan SG %s orig mroute-up add failed", | |
363 | vxlan_sg->sg_str); | |
364 | return; | |
365 | } | |
366 | ||
367 | pim_upstream_keep_alive_timer_start(up, vxlan_sg->pim->keep_alive_time); | |
368 | ||
369 | /* register the source with the RP */ | |
370 | if (up->reg_state == PIM_REG_NOINFO) { | |
371 | pim_register_join(up); | |
372 | pim_null_register_send(up); | |
373 | } | |
374 | ||
375 | /* update the inherited OIL */ | |
376 | pim_upstream_inherited_olist(vxlan_sg->pim, up); | |
69e3538c AK |
377 | if (!up->channel_oil->installed) |
378 | pim_upstream_mroute_add(up->channel_oil, __func__); | |
a513da36 AK |
379 | } |
380 | ||
39df629a AK |
381 | static void pim_vxlan_orig_mr_oif_add(struct pim_vxlan_sg *vxlan_sg) |
382 | { | |
383 | if (!vxlan_sg->up || !vxlan_sg->orig_oif) | |
384 | return; | |
385 | ||
386 | if (PIM_DEBUG_VXLAN) | |
387 | zlog_debug("vxlan SG %s oif %s add", | |
388 | vxlan_sg->sg_str, vxlan_sg->orig_oif->name); | |
389 | ||
390 | vxlan_sg->flags |= PIM_VXLAN_SGF_OIF_INSTALLED; | |
391 | pim_channel_add_oif(vxlan_sg->up->channel_oil, | |
1b249e70 AK |
392 | vxlan_sg->orig_oif, PIM_OIF_FLAG_PROTO_VXLAN, |
393 | __func__); | |
39df629a AK |
394 | } |
395 | ||
396 | static void pim_vxlan_orig_mr_oif_del(struct pim_vxlan_sg *vxlan_sg) | |
397 | { | |
398 | struct interface *orig_oif; | |
399 | ||
400 | orig_oif = vxlan_sg->orig_oif; | |
401 | vxlan_sg->orig_oif = NULL; | |
402 | ||
403 | if (!(vxlan_sg->flags & PIM_VXLAN_SGF_OIF_INSTALLED)) | |
404 | return; | |
405 | ||
406 | if (PIM_DEBUG_VXLAN) | |
407 | zlog_debug("vxlan SG %s oif %s del", | |
408 | vxlan_sg->sg_str, orig_oif->name); | |
409 | ||
410 | vxlan_sg->flags &= ~PIM_VXLAN_SGF_OIF_INSTALLED; | |
411 | pim_channel_del_oif(vxlan_sg->up->channel_oil, | |
1b249e70 | 412 | orig_oif, PIM_OIF_FLAG_PROTO_VXLAN, __func__); |
39df629a AK |
413 | } |
414 | ||
415 | static inline struct interface *pim_vxlan_orig_mr_oif_get( | |
416 | struct pim_instance *pim) | |
417 | { | |
418 | return (vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED) ? | |
419 | pim->vxlan.peerlink_rif : NULL; | |
420 | } | |
421 | ||
a513da36 AK |
422 | /* Single VTEPs: IIF for the vxlan-origination-mroutes is lo or vrf-dev (if |
423 | * the mroute is in a non-default vrf). | |
424 | * Anycast VTEPs: IIF is the MLAG ISL/peerlink. | |
425 | */ | |
426 | static inline struct interface *pim_vxlan_orig_mr_iif_get( | |
427 | struct pim_instance *pim) | |
428 | { | |
429 | return ((vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED) && | |
430 | pim->vxlan.peerlink_rif) ? | |
431 | pim->vxlan.peerlink_rif : pim->vxlan.default_iif; | |
432 | } | |
433 | ||
434 | static bool pim_vxlan_orig_mr_add_is_ok(struct pim_vxlan_sg *vxlan_sg) | |
435 | { | |
436 | struct pim_interface *pim_ifp; | |
437 | ||
438 | vxlan_sg->iif = pim_vxlan_orig_mr_iif_get(vxlan_sg->pim); | |
439 | if (!vxlan_sg->iif) | |
440 | return false; | |
441 | ||
442 | pim_ifp = (struct pim_interface *)vxlan_sg->iif->info; | |
443 | if (!pim_ifp || (pim_ifp->mroute_vif_index < 0)) | |
444 | return false; | |
445 | ||
446 | return true; | |
447 | } | |
448 | ||
449 | static void pim_vxlan_orig_mr_install(struct pim_vxlan_sg *vxlan_sg) | |
450 | { | |
451 | pim_vxlan_orig_mr_up_add(vxlan_sg); | |
39df629a AK |
452 | |
453 | vxlan_sg->orig_oif = pim_vxlan_orig_mr_oif_get(vxlan_sg->pim); | |
454 | pim_vxlan_orig_mr_oif_add(vxlan_sg); | |
a513da36 AK |
455 | } |
456 | ||
457 | static void pim_vxlan_orig_mr_add(struct pim_vxlan_sg *vxlan_sg) | |
458 | { | |
459 | if (!pim_vxlan_orig_mr_add_is_ok(vxlan_sg)) | |
460 | return; | |
461 | ||
462 | if (PIM_DEBUG_VXLAN) | |
463 | zlog_debug("vxlan SG %s orig-mr add", vxlan_sg->sg_str); | |
464 | ||
465 | pim_vxlan_orig_mr_install(vxlan_sg); | |
466 | } | |
467 | ||
468 | static void pim_vxlan_orig_mr_del(struct pim_vxlan_sg *vxlan_sg) | |
469 | { | |
470 | if (PIM_DEBUG_VXLAN) | |
471 | zlog_debug("vxlan SG %s orig-mr del", vxlan_sg->sg_str); | |
39df629a AK |
472 | |
473 | pim_vxlan_orig_mr_oif_del(vxlan_sg); | |
a513da36 AK |
474 | pim_vxlan_orig_mr_up_del(vxlan_sg); |
475 | } | |
476 | ||
269c1fe1 AK |
477 | static void pim_vxlan_orig_mr_iif_update(struct hash_backet *backet, void *arg) |
478 | { | |
479 | struct interface *ifp = (struct interface *)arg; | |
480 | struct pim_vxlan_sg *vxlan_sg = (struct pim_vxlan_sg *)backet->data; | |
481 | struct interface *old_iif = vxlan_sg->iif; | |
482 | ||
483 | if (!pim_vxlan_is_orig_mroute(vxlan_sg)) | |
484 | return; | |
485 | ||
486 | if (PIM_DEBUG_VXLAN) | |
487 | zlog_debug("vxlan SG %s iif changed from %s to %s", | |
488 | vxlan_sg->sg_str, | |
489 | old_iif ? old_iif->name : "-", | |
490 | ifp ? ifp->name : "-"); | |
491 | ||
492 | if (pim_vxlan_orig_mr_add_is_ok(vxlan_sg)) { | |
493 | if (vxlan_sg->up) { | |
494 | /* upstream exists but iif changed */ | |
495 | pim_vxlan_orig_mr_up_iif_update(vxlan_sg); | |
496 | } else { | |
497 | /* install mroute */ | |
498 | pim_vxlan_orig_mr_install(vxlan_sg); | |
499 | } | |
500 | } else { | |
501 | pim_vxlan_orig_mr_del(vxlan_sg); | |
502 | } | |
503 | } | |
504 | ||
332087df AK |
505 | /**************************** vxlan termination mroutes *********************** |
506 | * For every bum-mcast-grp registered by evpn a *G termination | |
507 | * mroute is setup by pimd. The purpose of this mroute is to pull down vxlan | |
508 | * packets with the bum-mcast-grp dip from the underlay and terminate the | |
509 | * tunnel. This is done by including the vxlan termination device (ipmr-lo) in | |
510 | * its OIL. The vxlan de-capsulated packets are subject to subsequent overlay | |
511 | * bridging. | |
512 | * | |
513 | * Sample mroute: | |
514 | * (0.0.0.0, 239.1.1.100) Iif: uplink-1 Oifs: ipmr-lo, uplink-1 | |
515 | *****************************************************************************/ | |
516 | struct pim_interface *pim_vxlan_get_term_ifp(struct pim_instance *pim) | |
517 | { | |
518 | return pim->vxlan.term_if ? | |
519 | (struct pim_interface *)pim->vxlan.term_if->info : NULL; | |
520 | } | |
521 | ||
522 | static void pim_vxlan_term_mr_oif_add(struct pim_vxlan_sg *vxlan_sg) | |
523 | { | |
524 | if (vxlan_sg->flags & PIM_VXLAN_SGF_OIF_INSTALLED) | |
525 | return; | |
526 | ||
527 | if (PIM_DEBUG_VXLAN) | |
528 | zlog_debug("vxlan SG %s term-oif %s add", | |
529 | vxlan_sg->sg_str, vxlan_sg->term_oif->name); | |
530 | ||
531 | if (pim_ifchannel_local_membership_add(vxlan_sg->term_oif, | |
532 | &vxlan_sg->sg)) { | |
533 | vxlan_sg->flags |= PIM_VXLAN_SGF_OIF_INSTALLED; | |
534 | } else { | |
535 | zlog_warn("vxlan SG %s term-oif %s add failed", | |
536 | vxlan_sg->sg_str, vxlan_sg->term_oif->name); | |
537 | } | |
538 | } | |
539 | ||
540 | static void pim_vxlan_term_mr_oif_del(struct pim_vxlan_sg *vxlan_sg) | |
541 | { | |
542 | if (!(vxlan_sg->flags & PIM_VXLAN_SGF_OIF_INSTALLED)) | |
543 | return; | |
544 | ||
545 | if (PIM_DEBUG_VXLAN) | |
546 | zlog_debug("vxlan SG %s oif %s del", | |
547 | vxlan_sg->sg_str, vxlan_sg->term_oif->name); | |
548 | ||
549 | vxlan_sg->flags &= ~PIM_VXLAN_SGF_OIF_INSTALLED; | |
550 | pim_ifchannel_local_membership_del(vxlan_sg->term_oif, &vxlan_sg->sg); | |
551 | } | |
552 | ||
553 | static void pim_vxlan_term_mr_up_add(struct pim_vxlan_sg *vxlan_sg) | |
554 | { | |
555 | struct pim_upstream *up; | |
556 | int flags = 0; | |
557 | ||
558 | if (vxlan_sg->up) { | |
559 | /* nothing to do */ | |
560 | return; | |
561 | } | |
562 | ||
563 | if (PIM_DEBUG_VXLAN) | |
564 | zlog_debug("vxlan SG %s term mroute-up add", | |
565 | vxlan_sg->sg_str); | |
566 | ||
567 | PIM_UPSTREAM_FLAG_SET_SRC_VXLAN_TERM(flags); | |
568 | /* enable MLAG designated-forwarder election on termination mroutes */ | |
569 | PIM_UPSTREAM_FLAG_SET_MLAG_VXLAN(flags); | |
570 | ||
571 | up = pim_upstream_add(vxlan_sg->pim, &vxlan_sg->sg, | |
572 | NULL /* iif */, flags, | |
573 | __PRETTY_FUNCTION__, NULL); | |
574 | vxlan_sg->up = up; | |
575 | ||
576 | if (!up) { | |
577 | zlog_warn("vxlan SG %s term mroute-up add failed", | |
578 | vxlan_sg->sg_str); | |
579 | } | |
580 | } | |
581 | ||
582 | static void pim_vxlan_term_mr_up_del(struct pim_vxlan_sg *vxlan_sg) | |
583 | { | |
584 | struct pim_upstream *up = vxlan_sg->up; | |
585 | ||
586 | if (!up) | |
587 | return; | |
588 | ||
589 | if (PIM_DEBUG_VXLAN) | |
590 | zlog_debug("vxlan SG %s term mroute-up del", | |
591 | vxlan_sg->sg_str); | |
592 | vxlan_sg->up = NULL; | |
593 | if (up->flags & PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM) { | |
594 | /* clear out all the vxlan related flags */ | |
595 | up->flags &= ~(PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM | | |
596 | PIM_UPSTREAM_FLAG_MASK_MLAG_VXLAN); | |
597 | ||
598 | pim_upstream_del(vxlan_sg->pim, up, | |
599 | __PRETTY_FUNCTION__); | |
600 | } | |
601 | } | |
602 | ||
603 | static void pim_vxlan_term_mr_add(struct pim_vxlan_sg *vxlan_sg) | |
604 | { | |
605 | if (PIM_DEBUG_VXLAN) | |
606 | zlog_debug("vxlan SG %s term mroute add", vxlan_sg->sg_str); | |
607 | ||
608 | vxlan_sg->term_oif = vxlan_sg->pim->vxlan.term_if; | |
609 | if (!vxlan_sg->term_oif) | |
610 | /* defer termination mroute till we have a termination device */ | |
611 | return; | |
612 | ||
613 | pim_vxlan_term_mr_up_add(vxlan_sg); | |
614 | /* set up local membership for the term-oif */ | |
615 | pim_vxlan_term_mr_oif_add(vxlan_sg); | |
616 | } | |
617 | ||
618 | static void pim_vxlan_term_mr_del(struct pim_vxlan_sg *vxlan_sg) | |
619 | { | |
620 | if (PIM_DEBUG_VXLAN) | |
621 | zlog_debug("vxlan SG %s term mroute del", vxlan_sg->sg_str); | |
622 | ||
623 | /* remove local membership associated with the term oif */ | |
624 | pim_vxlan_term_mr_oif_del(vxlan_sg); | |
625 | /* remove references to the upstream entry */ | |
626 | pim_vxlan_term_mr_up_del(vxlan_sg); | |
627 | } | |
628 | ||
b583b035 | 629 | /************************** vxlan SG cache management ************************/ |
d8b87afe | 630 | static unsigned int pim_vxlan_sg_hash_key_make(const void *p) |
b583b035 | 631 | { |
d8b87afe | 632 | const struct pim_vxlan_sg *vxlan_sg = p; |
b583b035 AK |
633 | |
634 | return (jhash_2words(vxlan_sg->sg.src.s_addr, | |
635 | vxlan_sg->sg.grp.s_addr, 0)); | |
636 | } | |
637 | ||
638 | static bool pim_vxlan_sg_hash_eq(const void *p1, const void *p2) | |
639 | { | |
640 | const struct pim_vxlan_sg *sg1 = p1; | |
641 | const struct pim_vxlan_sg *sg2 = p2; | |
642 | ||
643 | return ((sg1->sg.src.s_addr == sg2->sg.src.s_addr) | |
644 | && (sg1->sg.grp.s_addr == sg2->sg.grp.s_addr)); | |
645 | } | |
646 | ||
647 | static struct pim_vxlan_sg *pim_vxlan_sg_new(struct pim_instance *pim, | |
648 | struct prefix_sg *sg) | |
649 | { | |
650 | struct pim_vxlan_sg *vxlan_sg; | |
651 | ||
652 | vxlan_sg = XCALLOC(MTYPE_PIM_VXLAN_SG, sizeof(*vxlan_sg)); | |
653 | ||
654 | vxlan_sg->pim = pim; | |
655 | vxlan_sg->sg = *sg; | |
656 | pim_str_sg_set(sg, vxlan_sg->sg_str); | |
657 | ||
658 | if (PIM_DEBUG_VXLAN) | |
659 | zlog_debug("vxlan SG %s alloc", vxlan_sg->sg_str); | |
660 | ||
661 | vxlan_sg = hash_get(pim->vxlan.sg_hash, vxlan_sg, hash_alloc_intern); | |
662 | ||
663 | return vxlan_sg; | |
664 | } | |
665 | ||
666 | struct pim_vxlan_sg *pim_vxlan_sg_find(struct pim_instance *pim, | |
667 | struct prefix_sg *sg) | |
668 | { | |
669 | struct pim_vxlan_sg lookup; | |
670 | ||
671 | lookup.sg = *sg; | |
672 | return hash_lookup(pim->vxlan.sg_hash, &lookup); | |
673 | } | |
674 | ||
675 | struct pim_vxlan_sg *pim_vxlan_sg_add(struct pim_instance *pim, | |
676 | struct prefix_sg *sg) | |
677 | { | |
678 | struct pim_vxlan_sg *vxlan_sg; | |
679 | ||
680 | vxlan_sg = pim_vxlan_sg_find(pim, sg); | |
681 | if (vxlan_sg) | |
682 | return vxlan_sg; | |
683 | ||
684 | vxlan_sg = pim_vxlan_sg_new(pim, sg); | |
685 | ||
a513da36 AK |
686 | if (pim_vxlan_is_orig_mroute(vxlan_sg)) |
687 | pim_vxlan_orig_mr_add(vxlan_sg); | |
332087df AK |
688 | else |
689 | pim_vxlan_term_mr_add(vxlan_sg); | |
a513da36 | 690 | |
b583b035 AK |
691 | return vxlan_sg; |
692 | } | |
693 | ||
694 | void pim_vxlan_sg_del(struct pim_instance *pim, struct prefix_sg *sg) | |
695 | { | |
696 | struct pim_vxlan_sg *vxlan_sg; | |
697 | ||
698 | vxlan_sg = pim_vxlan_sg_find(pim, sg); | |
699 | if (!vxlan_sg) | |
700 | return; | |
701 | ||
a513da36 AK |
702 | vxlan_sg->flags |= PIM_VXLAN_SGF_DEL_IN_PROG; |
703 | ||
b9f3a51c AK |
704 | pim_vxlan_del_work(vxlan_sg); |
705 | ||
a513da36 AK |
706 | if (pim_vxlan_is_orig_mroute(vxlan_sg)) |
707 | pim_vxlan_orig_mr_del(vxlan_sg); | |
332087df AK |
708 | else |
709 | pim_vxlan_term_mr_del(vxlan_sg); | |
a513da36 | 710 | |
b583b035 AK |
711 | hash_release(vxlan_sg->pim->vxlan.sg_hash, vxlan_sg); |
712 | ||
713 | if (PIM_DEBUG_VXLAN) | |
714 | zlog_debug("vxlan SG %s free", vxlan_sg->sg_str); | |
715 | ||
716 | XFREE(MTYPE_PIM_VXLAN_SG, vxlan_sg); | |
717 | } | |
718 | ||
48b33862 AK |
719 | /******************************* MLAG handling *******************************/ |
720 | /* The peerlink sub-interface is added as an OIF to the origination-mroute. | |
721 | * This is done to send a copy of the multicast-vxlan encapsulated traffic | |
722 | * to the MLAG peer which may mroute it over the underlay if there are any | |
723 | * interested receivers. | |
724 | */ | |
725 | static void pim_vxlan_sg_peerlink_update(struct hash_backet *backet, void *arg) | |
726 | { | |
727 | struct interface *new_oif = (struct interface *)arg; | |
728 | struct pim_vxlan_sg *vxlan_sg = (struct pim_vxlan_sg *)backet->data; | |
729 | ||
730 | if (!pim_vxlan_is_orig_mroute(vxlan_sg)) | |
731 | return; | |
732 | ||
733 | if (vxlan_sg->orig_oif == new_oif) | |
734 | return; | |
735 | ||
736 | pim_vxlan_orig_mr_oif_del(vxlan_sg); | |
737 | ||
738 | vxlan_sg->orig_oif = new_oif; | |
739 | pim_vxlan_orig_mr_oif_add(vxlan_sg); | |
740 | } | |
741 | ||
742 | /* In the case of anycast VTEPs the VTEP-PIP must be used as the | |
743 | * register source. | |
744 | */ | |
745 | bool pim_vxlan_get_register_src(struct pim_instance *pim, | |
746 | struct pim_upstream *up, struct in_addr *src_p) | |
747 | { | |
748 | if (!(vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED)) | |
749 | return true; | |
750 | ||
751 | /* if address is not available suppress the pim-register */ | |
752 | if (vxlan_mlag.reg_addr.s_addr == INADDR_ANY) | |
753 | return false; | |
754 | ||
755 | *src_p = vxlan_mlag.reg_addr; | |
756 | return true; | |
757 | } | |
758 | ||
759 | void pim_vxlan_mlag_update(bool enable, bool peer_state, uint32_t role, | |
760 | struct interface *peerlink_rif, | |
761 | struct in_addr *reg_addr) | |
762 | { | |
763 | struct pim_instance *pim; | |
764 | struct interface *old_oif; | |
765 | struct interface *new_oif; | |
766 | char addr_buf[INET_ADDRSTRLEN]; | |
767 | struct pim_interface *pim_ifp = NULL; | |
768 | ||
769 | if (PIM_DEBUG_VXLAN) { | |
770 | inet_ntop(AF_INET, reg_addr, | |
771 | addr_buf, INET_ADDRSTRLEN); | |
772 | zlog_debug("vxlan MLAG update %s state %s role %d rif %s addr %s", | |
773 | enable ? "enable" : "disable", | |
774 | peer_state ? "up" : "down", | |
775 | role, | |
776 | peerlink_rif ? peerlink_rif->name : "-", | |
777 | addr_buf); | |
778 | } | |
779 | ||
780 | /* XXX: for now vxlan termination is only possible in the default VRF | |
781 | * when that changes this will need to change to iterate all VRFs | |
782 | */ | |
783 | pim = pim_get_pim_instance(VRF_DEFAULT); | |
784 | ||
785 | old_oif = pim_vxlan_orig_mr_oif_get(pim); | |
786 | ||
787 | if (enable) | |
788 | vxlan_mlag.flags |= PIM_VXLAN_MLAGF_ENABLED; | |
789 | else | |
790 | vxlan_mlag.flags &= ~PIM_VXLAN_MLAGF_ENABLED; | |
791 | ||
792 | if (vxlan_mlag.peerlink_rif != peerlink_rif) | |
793 | vxlan_mlag.peerlink_rif = peerlink_rif; | |
794 | ||
795 | vxlan_mlag.reg_addr = *reg_addr; | |
796 | vxlan_mlag.peer_state = peer_state; | |
797 | vxlan_mlag.role = role; | |
798 | ||
799 | /* process changes */ | |
800 | if (vxlan_mlag.peerlink_rif) | |
801 | pim_ifp = (struct pim_interface *)vxlan_mlag.peerlink_rif->info; | |
802 | if ((vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED) && | |
803 | pim_ifp && (pim_ifp->mroute_vif_index > 0)) | |
804 | pim_vxlan_set_peerlink_rif(pim, peerlink_rif); | |
805 | else | |
806 | pim_vxlan_set_peerlink_rif(pim, NULL); | |
807 | ||
808 | new_oif = pim_vxlan_orig_mr_oif_get(pim); | |
809 | if (old_oif != new_oif) | |
810 | hash_iterate(pim->vxlan.sg_hash, pim_vxlan_sg_peerlink_update, | |
811 | new_oif); | |
812 | } | |
813 | ||
269c1fe1 | 814 | /****************************** misc callbacks *******************************/ |
7c85225c AK |
815 | void pim_vxlan_config_write(struct vty *vty, char *spaces, int *writes) |
816 | { | |
817 | char addr_buf[INET_ADDRSTRLEN]; | |
818 | ||
819 | if ((vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED) && | |
820 | vxlan_mlag.peerlink_rif) { | |
821 | ||
822 | inet_ntop(AF_INET, &vxlan_mlag.reg_addr, | |
823 | addr_buf, sizeof(addr_buf)); | |
824 | vty_out(vty, | |
825 | "%sip pim mlag %s role %s state %s addr %s\n", | |
826 | spaces, | |
827 | vxlan_mlag.peerlink_rif->name, | |
828 | (vxlan_mlag.role == PIM_VXLAN_MLAG_ROLE_PRIMARY) ? | |
829 | "primary":"secondary", | |
830 | vxlan_mlag.peer_state ? "up" : "down", | |
831 | addr_buf); | |
832 | *writes += 1; | |
833 | } | |
834 | } | |
835 | ||
269c1fe1 AK |
836 | static void pim_vxlan_set_default_iif(struct pim_instance *pim, |
837 | struct interface *ifp) | |
838 | { | |
839 | struct interface *old_iif; | |
840 | ||
841 | if (pim->vxlan.default_iif == ifp) | |
842 | return; | |
843 | ||
844 | old_iif = pim->vxlan.default_iif; | |
845 | if (PIM_DEBUG_VXLAN) | |
846 | zlog_debug("%s: vxlan default iif changed from %s to %s", | |
847 | __PRETTY_FUNCTION__, | |
848 | old_iif ? old_iif->name : "-", | |
849 | ifp ? ifp->name : "-"); | |
850 | ||
851 | old_iif = pim_vxlan_orig_mr_iif_get(pim); | |
852 | pim->vxlan.default_iif = ifp; | |
853 | ifp = pim_vxlan_orig_mr_iif_get(pim); | |
854 | if (old_iif == ifp) | |
855 | return; | |
856 | ||
857 | if (PIM_DEBUG_VXLAN) | |
858 | zlog_debug("%s: vxlan orig iif changed from %s to %s", | |
859 | __PRETTY_FUNCTION__, old_iif ? old_iif->name : "-", | |
860 | ifp ? ifp->name : "-"); | |
861 | ||
862 | /* add/del upstream entries for the existing vxlan SG when the | |
863 | * interface becomes available | |
864 | */ | |
b21e0c93 AK |
865 | if (pim->vxlan.sg_hash) |
866 | hash_iterate(pim->vxlan.sg_hash, | |
867 | pim_vxlan_orig_mr_iif_update, ifp); | |
269c1fe1 AK |
868 | } |
869 | ||
870 | static void pim_vxlan_set_peerlink_rif(struct pim_instance *pim, | |
871 | struct interface *ifp) | |
872 | { | |
873 | struct interface *old_iif; | |
874 | ||
875 | if (pim->vxlan.peerlink_rif == ifp) | |
876 | return; | |
877 | ||
878 | old_iif = pim->vxlan.peerlink_rif; | |
879 | if (PIM_DEBUG_VXLAN) | |
880 | zlog_debug("%s: vxlan peerlink_rif changed from %s to %s", | |
881 | __PRETTY_FUNCTION__, old_iif ? old_iif->name : "-", | |
882 | ifp ? ifp->name : "-"); | |
883 | ||
884 | old_iif = pim_vxlan_orig_mr_iif_get(pim); | |
885 | pim->vxlan.peerlink_rif = ifp; | |
886 | ifp = pim_vxlan_orig_mr_iif_get(pim); | |
887 | if (old_iif == ifp) | |
888 | return; | |
889 | ||
890 | if (PIM_DEBUG_VXLAN) | |
891 | zlog_debug("%s: vxlan orig iif changed from %s to %s", | |
892 | __PRETTY_FUNCTION__, old_iif ? old_iif->name : "-", | |
893 | ifp ? ifp->name : "-"); | |
894 | ||
895 | /* add/del upstream entries for the existing vxlan SG when the | |
896 | * interface becomes available | |
897 | */ | |
b21e0c93 AK |
898 | if (pim->vxlan.sg_hash) |
899 | hash_iterate(pim->vxlan.sg_hash, | |
900 | pim_vxlan_orig_mr_iif_update, ifp); | |
269c1fe1 AK |
901 | } |
902 | ||
903 | void pim_vxlan_add_vif(struct interface *ifp) | |
904 | { | |
905 | struct pim_interface *pim_ifp = ifp->info; | |
906 | struct pim_instance *pim = pim_ifp->pim; | |
907 | ||
269c1fe1 AK |
908 | if (pim->vrf_id != VRF_DEFAULT) |
909 | return; | |
910 | ||
911 | if (if_is_loopback_or_vrf(ifp)) | |
912 | pim_vxlan_set_default_iif(pim, ifp); | |
913 | ||
914 | if (vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED && | |
915 | (ifp == vxlan_mlag.peerlink_rif)) | |
916 | pim_vxlan_set_peerlink_rif(pim, ifp); | |
917 | } | |
918 | ||
919 | void pim_vxlan_del_vif(struct interface *ifp) | |
920 | { | |
921 | struct pim_interface *pim_ifp = ifp->info; | |
922 | struct pim_instance *pim = pim_ifp->pim; | |
923 | ||
924 | if (pim->vrf_id != VRF_DEFAULT) | |
925 | return; | |
926 | ||
927 | if (pim->vxlan.default_iif == ifp) | |
928 | pim_vxlan_set_default_iif(pim, NULL); | |
929 | ||
930 | if (pim->vxlan.peerlink_rif == ifp) | |
931 | pim_vxlan_set_peerlink_rif(pim, NULL); | |
932 | } | |
933 | ||
0a2dcc1c AK |
934 | static void pim_vxlan_term_mr_oif_update(struct hash_backet *backet, void *arg) |
935 | { | |
936 | struct interface *ifp = (struct interface *)arg; | |
937 | struct pim_vxlan_sg *vxlan_sg = (struct pim_vxlan_sg *)backet->data; | |
938 | ||
939 | if (pim_vxlan_is_orig_mroute(vxlan_sg)) | |
940 | return; | |
941 | ||
942 | if (vxlan_sg->term_oif == ifp) | |
943 | return; | |
944 | ||
945 | if (PIM_DEBUG_VXLAN) | |
946 | zlog_debug("vxlan SG %s term oif changed from %s to %s", | |
947 | vxlan_sg->sg_str, | |
948 | vxlan_sg->term_oif ? vxlan_sg->term_oif->name : "-", | |
949 | ifp ? ifp->name : "-"); | |
950 | ||
951 | pim_vxlan_term_mr_del(vxlan_sg); | |
952 | vxlan_sg->term_oif = ifp; | |
953 | pim_vxlan_term_mr_add(vxlan_sg); | |
954 | } | |
955 | ||
956 | void pim_vxlan_add_term_dev(struct pim_instance *pim, | |
957 | struct interface *ifp) | |
958 | { | |
959 | struct pim_interface *pim_ifp; | |
960 | ||
961 | if (pim->vxlan.term_if == ifp) | |
962 | return; | |
963 | ||
964 | if (PIM_DEBUG_VXLAN) | |
965 | zlog_debug("vxlan term oif changed from %s to %s", | |
966 | pim->vxlan.term_if ? pim->vxlan.term_if->name : "-", | |
7b227daf | 967 | ifp->name); |
0a2dcc1c AK |
968 | |
969 | /* enable pim on the term ifp */ | |
970 | pim_ifp = (struct pim_interface *)ifp->info; | |
5121278e | 971 | if (pim_ifp) { |
0a2dcc1c | 972 | PIM_IF_DO_PIM(pim_ifp->options); |
5121278e | 973 | } else { |
0a2dcc1c AK |
974 | pim_ifp = pim_if_new(ifp, false /*igmp*/, true /*pim*/, |
975 | false /*pimreg*/, true /*vxlan_term*/); | |
5121278e AK |
976 | /* ensure that pimreg existss before using the newly created |
977 | * vxlan termination device | |
978 | */ | |
979 | pim_if_create_pimreg(pim); | |
980 | } | |
0a2dcc1c AK |
981 | |
982 | pim->vxlan.term_if = ifp; | |
b21e0c93 AK |
983 | |
984 | if (pim->vxlan.sg_hash) | |
985 | hash_iterate(pim_ifp->pim->vxlan.sg_hash, | |
986 | pim_vxlan_term_mr_oif_update, ifp); | |
0a2dcc1c AK |
987 | } |
988 | ||
989 | void pim_vxlan_del_term_dev(struct pim_instance *pim) | |
990 | { | |
991 | struct interface *ifp = pim->vxlan.term_if; | |
992 | struct pim_interface *pim_ifp; | |
993 | ||
994 | if (PIM_DEBUG_VXLAN) | |
995 | zlog_debug("vxlan term oif changed from %s to -", ifp->name); | |
996 | ||
997 | pim->vxlan.term_if = NULL; | |
b21e0c93 AK |
998 | |
999 | if (pim->vxlan.sg_hash) | |
1000 | hash_iterate(pim->vxlan.sg_hash, | |
1001 | pim_vxlan_term_mr_oif_update, NULL); | |
0a2dcc1c AK |
1002 | |
1003 | pim_ifp = (struct pim_interface *)ifp->info; | |
1004 | if (pim_ifp) { | |
1005 | PIM_IF_DONT_PIM(pim_ifp->options); | |
1006 | if (!PIM_IF_TEST_IGMP(pim_ifp->options)) | |
1007 | pim_if_delete(ifp); | |
1008 | } | |
1009 | ||
1010 | } | |
1011 | ||
b583b035 AK |
1012 | void pim_vxlan_init(struct pim_instance *pim) |
1013 | { | |
1014 | char hash_name[64]; | |
1015 | ||
1016 | snprintf(hash_name, sizeof(hash_name), | |
1017 | "PIM %s vxlan SG hash", pim->vrf->name); | |
1018 | pim->vxlan.sg_hash = hash_create(pim_vxlan_sg_hash_key_make, | |
1019 | pim_vxlan_sg_hash_eq, hash_name); | |
1020 | } | |
1021 | ||
1022 | void pim_vxlan_exit(struct pim_instance *pim) | |
1023 | { | |
1024 | if (pim->vxlan.sg_hash) { | |
1025 | hash_clean(pim->vxlan.sg_hash, NULL); | |
1026 | hash_free(pim->vxlan.sg_hash); | |
1027 | pim->vxlan.sg_hash = NULL; | |
1028 | } | |
1029 | } |