]>
Commit | Line | Data |
---|---|---|
acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
b583b035 AK |
2 | /* PIM support for VxLAN BUM flooding |
3 | * | |
4 | * Copyright (C) 2019 Cumulus Networks, Inc. | |
b583b035 AK |
5 | */ |
6 | ||
7 | #include <zebra.h> | |
8 | ||
9 | #include <hash.h> | |
10 | #include <jhash.h> | |
11 | #include <log.h> | |
12 | #include <prefix.h> | |
13 | #include <vrf.h> | |
14 | ||
15 | #include "pimd.h" | |
16 | #include "pim_iface.h" | |
17 | #include "pim_memory.h" | |
18 | #include "pim_oil.h" | |
19 | #include "pim_register.h" | |
20 | #include "pim_str.h" | |
21 | #include "pim_upstream.h" | |
22 | #include "pim_ifchannel.h" | |
23 | #include "pim_nht.h" | |
24 | #include "pim_zebra.h" | |
25 | #include "pim_vxlan.h" | |
05ca004b | 26 | #include "pim_mlag.h" |
b583b035 | 27 | |
d889ab75 AK |
28 | /* pim-vxlan global info */ |
29 | struct pim_vxlan vxlan_info, *pim_vxlan_p = &vxlan_info; | |
b583b035 | 30 | |
b9f3a51c | 31 | static void pim_vxlan_work_timer_setup(bool start); |
48b33862 AK |
32 | static void pim_vxlan_set_peerlink_rif(struct pim_instance *pim, |
33 | struct interface *ifp); | |
b9f3a51c AK |
34 | |
35 | /*************************** vxlan work list ********************************** | |
36 | * A work list is maintained for staggered generation of pim null register | |
37 | * messages for vxlan SG entries that are in a reg_join state. | |
38 | * | |
39 | * A max of 500 NULL registers are generated at one shot. If paused reg | |
40 | * generation continues on the next second and so on till all register | |
41 | * messages have been sent out. And the process is restarted every 60s. | |
42 | * | |
43 | * purpose of this null register generation is to setup the SPT and maintain | |
44 | * independent of the presence of overlay BUM traffic. | |
45 | ****************************************************************************/ | |
46 | static void pim_vxlan_do_reg_work(void) | |
47 | { | |
48 | struct listnode *listnode; | |
49 | int work_cnt = 0; | |
50 | struct pim_vxlan_sg *vxlan_sg; | |
51 | static int sec_count; | |
52 | ||
53 | ++sec_count; | |
54 | ||
55 | if (sec_count > PIM_VXLAN_NULL_REG_INTERVAL) { | |
56 | sec_count = 0; | |
57 | listnode = vxlan_info.next_work ? | |
58 | vxlan_info.next_work : | |
59 | vxlan_info.work_list->head; | |
60 | if (PIM_DEBUG_VXLAN && listnode) | |
61 | zlog_debug("vxlan SG work %s", | |
62 | vxlan_info.next_work ? "continues" : "starts"); | |
63 | } else { | |
64 | listnode = vxlan_info.next_work; | |
65 | } | |
66 | ||
67 | for (; listnode; listnode = listnode->next) { | |
68 | vxlan_sg = (struct pim_vxlan_sg *)listnode->data; | |
69 | if (vxlan_sg->up && (vxlan_sg->up->reg_state == PIM_REG_JOIN)) { | |
70 | if (PIM_DEBUG_VXLAN) | |
71 | zlog_debug("vxlan SG %s periodic NULL register", | |
72 | vxlan_sg->sg_str); | |
7a11dc74 DS |
73 | |
74 | /* | |
75 | * If we are on the work queue *and* the rpf | |
76 | * has been lost on the vxlan_sg->up let's | |
77 | * make sure that we don't send it. | |
78 | */ | |
79 | if (vxlan_sg->up->rpf.source_nexthop.interface) { | |
80 | pim_null_register_send(vxlan_sg->up); | |
81 | ++work_cnt; | |
82 | } | |
b9f3a51c AK |
83 | } |
84 | ||
85 | if (work_cnt > vxlan_info.max_work_cnt) { | |
86 | vxlan_info.next_work = listnode->next; | |
87 | if (PIM_DEBUG_VXLAN) | |
88 | zlog_debug("vxlan SG %d work items proc and pause", | |
89 | work_cnt); | |
90 | return; | |
91 | } | |
92 | } | |
93 | ||
94 | if (work_cnt) { | |
95 | if (PIM_DEBUG_VXLAN) | |
96 | zlog_debug("vxlan SG %d work items proc", work_cnt); | |
97 | } | |
98 | vxlan_info.next_work = NULL; | |
99 | } | |
100 | ||
101 | /* Staggered work related info is initialized when the first work comes | |
102 | * along | |
103 | */ | |
104 | static void pim_vxlan_init_work(void) | |
105 | { | |
106 | if (vxlan_info.flags & PIM_VXLANF_WORK_INITED) | |
107 | return; | |
108 | ||
109 | vxlan_info.max_work_cnt = PIM_VXLAN_WORK_MAX; | |
110 | vxlan_info.flags |= PIM_VXLANF_WORK_INITED; | |
111 | vxlan_info.work_list = list_new(); | |
2951a7a4 | 112 | pim_vxlan_work_timer_setup(true/* start */); |
b9f3a51c AK |
113 | } |
114 | ||
115 | static void pim_vxlan_add_work(struct pim_vxlan_sg *vxlan_sg) | |
116 | { | |
117 | if (vxlan_sg->flags & PIM_VXLAN_SGF_DEL_IN_PROG) { | |
118 | if (PIM_DEBUG_VXLAN) | |
119 | zlog_debug("vxlan SG %s skip work list; del-in-prog", | |
120 | vxlan_sg->sg_str); | |
121 | return; | |
122 | } | |
123 | ||
124 | pim_vxlan_init_work(); | |
125 | ||
126 | /* already a part of the work list */ | |
127 | if (vxlan_sg->work_node) | |
128 | return; | |
129 | ||
130 | if (PIM_DEBUG_VXLAN) | |
131 | zlog_debug("vxlan SG %s work list add", | |
132 | vxlan_sg->sg_str); | |
133 | vxlan_sg->work_node = listnode_add(vxlan_info.work_list, vxlan_sg); | |
134 | /* XXX: adjust max_work_cnt if needed */ | |
135 | } | |
136 | ||
137 | static void pim_vxlan_del_work(struct pim_vxlan_sg *vxlan_sg) | |
138 | { | |
139 | if (!vxlan_sg->work_node) | |
140 | return; | |
141 | ||
142 | if (PIM_DEBUG_VXLAN) | |
143 | zlog_debug("vxlan SG %s work list del", | |
144 | vxlan_sg->sg_str); | |
145 | ||
146 | if (vxlan_sg->work_node == vxlan_info.next_work) | |
147 | vxlan_info.next_work = vxlan_sg->work_node->next; | |
148 | ||
149 | list_delete_node(vxlan_info.work_list, vxlan_sg->work_node); | |
150 | vxlan_sg->work_node = NULL; | |
151 | } | |
152 | ||
153 | void pim_vxlan_update_sg_reg_state(struct pim_instance *pim, | |
154 | struct pim_upstream *up, bool reg_join) | |
155 | { | |
156 | struct pim_vxlan_sg *vxlan_sg; | |
157 | ||
158 | vxlan_sg = pim_vxlan_sg_find(pim, &up->sg); | |
159 | if (!vxlan_sg) | |
160 | return; | |
161 | ||
162 | /* add the vxlan sg entry to a work list for periodic reg joins. | |
163 | * the entry will stay in the list as long as the register state is | |
164 | * PIM_REG_JOIN | |
165 | */ | |
166 | if (reg_join) | |
167 | pim_vxlan_add_work(vxlan_sg); | |
168 | else | |
169 | pim_vxlan_del_work(vxlan_sg); | |
170 | } | |
171 | ||
cc9f21da | 172 | static void pim_vxlan_work_timer_cb(struct thread *t) |
b9f3a51c AK |
173 | { |
174 | pim_vxlan_do_reg_work(); | |
175 | pim_vxlan_work_timer_setup(true /* start */); | |
b9f3a51c AK |
176 | } |
177 | ||
178 | /* global 1second timer used for periodic processing */ | |
179 | static void pim_vxlan_work_timer_setup(bool start) | |
180 | { | |
181 | THREAD_OFF(vxlan_info.work_timer); | |
182 | if (start) | |
183 | thread_add_timer(router->master, pim_vxlan_work_timer_cb, NULL, | |
184 | PIM_VXLAN_WORK_TIME, &vxlan_info.work_timer); | |
185 | } | |
186 | ||
a513da36 AK |
187 | /**************************** vxlan origination mroutes *********************** |
188 | * For every (local-vtep-ip, bum-mcast-grp) registered by evpn an origination | |
189 | * mroute is setup by pimd. The purpose of this mroute is to forward vxlan | |
190 | * encapsulated BUM (broadcast, unknown-unicast and unknown-multicast packets | |
191 | * over the underlay.) | |
192 | * | |
193 | * Sample mroute (single VTEP): | |
194 | * (27.0.0.7, 239.1.1.100) Iif: lo Oifs: uplink-1 | |
195 | * | |
196 | * Sample mroute (anycast VTEP): | |
197 | * (36.0.0.9, 239.1.1.100) Iif: peerlink-3.4094\ | |
198 | * Oifs: peerlink-3.4094 uplink-1 | |
199 | ***************************************************************************/ | |
200 | static void pim_vxlan_orig_mr_up_del(struct pim_vxlan_sg *vxlan_sg) | |
201 | { | |
202 | struct pim_upstream *up = vxlan_sg->up; | |
203 | ||
204 | if (!up) | |
205 | return; | |
206 | ||
207 | if (PIM_DEBUG_VXLAN) | |
208 | zlog_debug("vxlan SG %s orig mroute-up del", | |
209 | vxlan_sg->sg_str); | |
210 | ||
211 | vxlan_sg->up = NULL; | |
514bda47 | 212 | |
a513da36 AK |
213 | if (up->flags & PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG) { |
214 | /* clear out all the vxlan properties */ | |
215 | up->flags &= ~(PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_ORIG | | |
216 | PIM_UPSTREAM_FLAG_MASK_STATIC_IIF | | |
217 | PIM_UPSTREAM_FLAG_MASK_DISABLE_KAT_EXPIRY | | |
218 | PIM_UPSTREAM_FLAG_MASK_FORCE_PIMREG | | |
219 | PIM_UPSTREAM_FLAG_MASK_NO_PIMREG_DATA | | |
220 | PIM_UPSTREAM_FLAG_MASK_ALLOW_IIF_IN_OIL); | |
221 | ||
222 | /* We bring things to a grinding halt by force expirying | |
223 | * the kat. Doing this will also remove the reference we | |
224 | * created as a "vxlan" source and delete the upstream entry | |
225 | * if there are no other references. | |
226 | */ | |
227 | if (PIM_UPSTREAM_FLAG_TEST_SRC_STREAM(up->flags)) { | |
228 | THREAD_OFF(up->t_ka_timer); | |
229 | up = pim_upstream_keep_alive_timer_proc(up); | |
230 | } else { | |
231 | /* this is really unexpected as we force vxlan | |
232 | * origination mroutes active sources but just in | |
233 | * case | |
234 | */ | |
15569c58 | 235 | up = pim_upstream_del(vxlan_sg->pim, up, __func__); |
a513da36 AK |
236 | } |
237 | /* if there are other references register the source | |
238 | * for nht | |
239 | */ | |
f7cd1091 DS |
240 | if (up) { |
241 | enum pim_rpf_result r; | |
242 | ||
243 | r = pim_rpf_update(vxlan_sg->pim, up, NULL, __func__); | |
244 | if (r == PIM_RPF_FAILURE) { | |
245 | if (PIM_DEBUG_VXLAN) | |
246 | zlog_debug( | |
247 | "vxlan SG %s rpf_update failure", | |
248 | vxlan_sg->sg_str); | |
249 | } | |
250 | } | |
a513da36 AK |
251 | } |
252 | } | |
253 | ||
254 | static void pim_vxlan_orig_mr_up_iif_update(struct pim_vxlan_sg *vxlan_sg) | |
255 | { | |
a513da36 AK |
256 | /* update MFC with the new IIF */ |
257 | pim_upstream_fill_static_iif(vxlan_sg->up, vxlan_sg->iif); | |
7984af18 | 258 | pim_upstream_mroute_iif_update(vxlan_sg->up->channel_oil, __func__); |
a513da36 AK |
259 | |
260 | if (PIM_DEBUG_VXLAN) | |
7984af18 | 261 | zlog_debug("vxlan SG %s orig mroute-up updated with iif %s", |
a513da36 | 262 | vxlan_sg->sg_str, |
7984af18 | 263 | vxlan_sg->iif?vxlan_sg->iif->name:"-"); |
a513da36 AK |
264 | |
265 | } | |
266 | ||
267 | /* For every VxLAN BUM multicast group we setup a SG-up that has the following | |
268 | * "forced properties" - | |
269 | * 1. Directly connected on a DR interface i.e. we must act as an FHR | |
270 | * 2. We prime the pump i.e. no multicast data is needed to register this | |
271 | * source with the FHR. To do that we send periodic null registers if | |
272 | * the SG entry is in a register-join state. We also prevent expiry of | |
273 | * KAT. | |
274 | * 3. As this SG is setup without data there is no need to register encapsulate | |
275 | * data traffic. This encapsulation is explicitly skipped for the following | |
276 | * reasons - | |
277 | * a) Many levels of encapsulation are needed creating MTU disc challenges. | |
278 | * Overlay BUM is encapsulated in a vxlan/UDP/IP header and then | |
279 | * encapsulated again in a pim-register header. | |
280 | * b) On a vxlan-aa setup both switches rx a copy of each BUM packet. if | |
281 | * they both reg encapsulated traffic the RP will accept the duplicates | |
282 | * as there are no RPF checks for this encapsulated data. | |
283 | * a), b) can be workarounded if needed, but there is really no need because | |
284 | * of (2) i.e. the pump is primed without data. | |
285 | */ | |
286 | static void pim_vxlan_orig_mr_up_add(struct pim_vxlan_sg *vxlan_sg) | |
287 | { | |
288 | struct pim_upstream *up; | |
07f4bac3 | 289 | struct pim_interface *term_ifp; |
a513da36 | 290 | int flags = 0; |
5923b739 | 291 | struct pim_instance *pim = vxlan_sg->pim; |
a513da36 AK |
292 | |
293 | if (vxlan_sg->up) { | |
294 | /* nothing to do */ | |
295 | return; | |
296 | } | |
297 | ||
298 | if (PIM_DEBUG_VXLAN) | |
299 | zlog_debug("vxlan SG %s orig mroute-up add with iif %s", | |
300 | vxlan_sg->sg_str, | |
301 | vxlan_sg->iif?vxlan_sg->iif->name:"-"); | |
302 | ||
303 | PIM_UPSTREAM_FLAG_SET_SRC_VXLAN_ORIG(flags); | |
304 | /* pin the IIF to lo or peerlink-subinterface and disable NHT */ | |
305 | PIM_UPSTREAM_FLAG_SET_STATIC_IIF(flags); | |
306 | /* Fake traffic by setting SRC_STREAM and starting KAT */ | |
307 | /* We intentionally skip updating ref count for SRC_STREAM/FHR. | |
308 | * Setting SRC_VXLAN should have already created a reference | |
309 | * preventing the entry from being deleted | |
310 | */ | |
311 | PIM_UPSTREAM_FLAG_SET_FHR(flags); | |
312 | PIM_UPSTREAM_FLAG_SET_SRC_STREAM(flags); | |
313 | /* Force pimreg even if non-DR. This is needed on a MLAG setup for | |
314 | * VxLAN AA | |
315 | */ | |
316 | PIM_UPSTREAM_FLAG_SET_FORCE_PIMREG(flags); | |
317 | /* prevent KAT expiry. we want the MDT setup even if there is no BUM | |
318 | * traffic | |
319 | */ | |
320 | PIM_UPSTREAM_FLAG_SET_DISABLE_KAT_EXPIRY(flags); | |
321 | /* SPT for vxlan BUM groups is primed and maintained via NULL | |
322 | * registers so there is no need to reg-encapsulate | |
323 | * vxlan-encapsulated overlay data traffic | |
324 | */ | |
325 | PIM_UPSTREAM_FLAG_SET_NO_PIMREG_DATA(flags); | |
326 | /* On a MLAG setup we force a copy to the MLAG peer while also | |
327 | * accepting traffic from the peer. To do this we set peerlink-rif as | |
328 | * the IIF and also add it to the OIL | |
329 | */ | |
330 | PIM_UPSTREAM_FLAG_SET_ALLOW_IIF_IN_OIL(flags); | |
331 | ||
332 | /* XXX: todo: defer pim_upstream add if pim is not enabled on the iif */ | |
333 | up = pim_upstream_find(vxlan_sg->pim, &vxlan_sg->sg); | |
334 | if (up) { | |
335 | /* if the iif is set to something other than the vxlan_sg->iif | |
336 | * we must dereg the old nexthop and force to new "static" | |
337 | * iif | |
338 | */ | |
339 | if (!PIM_UPSTREAM_FLAG_TEST_STATIC_IIF(up->flags)) { | |
e6e53006 | 340 | pim_delete_tracked_nexthop(vxlan_sg->pim, |
341 | up->upstream_addr, up, NULL); | |
a513da36 | 342 | } |
69e3538c AK |
343 | /* We are acting FHR; clear out use_rpt setting if any */ |
344 | pim_upstream_update_use_rpt(up, false /*update_mroute*/); | |
15569c58 | 345 | pim_upstream_ref(up, flags, __func__); |
a513da36 | 346 | vxlan_sg->up = up; |
07f4bac3 AK |
347 | term_ifp = pim_vxlan_get_term_ifp(pim); |
348 | /* mute termination device on origination mroutes */ | |
349 | if (term_ifp) | |
350 | pim_channel_update_oif_mute(up->channel_oil, | |
351 | term_ifp); | |
a513da36 | 352 | pim_vxlan_orig_mr_up_iif_update(vxlan_sg); |
5923b739 AK |
353 | /* mute pimreg on origination mroutes */ |
354 | if (pim->regiface) | |
355 | pim_channel_update_oif_mute(up->channel_oil, | |
356 | pim->regiface->info); | |
a513da36 AK |
357 | } else { |
358 | up = pim_upstream_add(vxlan_sg->pim, &vxlan_sg->sg, | |
15569c58 | 359 | vxlan_sg->iif, flags, __func__, NULL); |
a513da36 AK |
360 | vxlan_sg->up = up; |
361 | } | |
362 | ||
363 | if (!up) { | |
364 | if (PIM_DEBUG_VXLAN) | |
365 | zlog_debug("vxlan SG %s orig mroute-up add failed", | |
366 | vxlan_sg->sg_str); | |
367 | return; | |
368 | } | |
369 | ||
370 | pim_upstream_keep_alive_timer_start(up, vxlan_sg->pim->keep_alive_time); | |
371 | ||
372 | /* register the source with the RP */ | |
6b74db75 AK |
373 | switch (up->reg_state) { |
374 | ||
375 | case PIM_REG_NOINFO: | |
a513da36 AK |
376 | pim_register_join(up); |
377 | pim_null_register_send(up); | |
6b74db75 AK |
378 | break; |
379 | ||
380 | case PIM_REG_JOIN: | |
381 | /* if the pim upstream entry is already in reg-join state | |
382 | * send null_register right away and add to the register | |
383 | * worklist | |
384 | */ | |
385 | pim_null_register_send(up); | |
386 | pim_vxlan_update_sg_reg_state(pim, up, true); | |
387 | break; | |
388 | ||
7f5faf7c DS |
389 | case PIM_REG_JOIN_PENDING: |
390 | case PIM_REG_PRUNE: | |
391 | break; | |
a513da36 AK |
392 | } |
393 | ||
394 | /* update the inherited OIL */ | |
395 | pim_upstream_inherited_olist(vxlan_sg->pim, up); | |
69e3538c AK |
396 | if (!up->channel_oil->installed) |
397 | pim_upstream_mroute_add(up->channel_oil, __func__); | |
a513da36 AK |
398 | } |
399 | ||
39df629a AK |
400 | static void pim_vxlan_orig_mr_oif_add(struct pim_vxlan_sg *vxlan_sg) |
401 | { | |
402 | if (!vxlan_sg->up || !vxlan_sg->orig_oif) | |
403 | return; | |
404 | ||
405 | if (PIM_DEBUG_VXLAN) | |
406 | zlog_debug("vxlan SG %s oif %s add", | |
407 | vxlan_sg->sg_str, vxlan_sg->orig_oif->name); | |
408 | ||
409 | vxlan_sg->flags |= PIM_VXLAN_SGF_OIF_INSTALLED; | |
410 | pim_channel_add_oif(vxlan_sg->up->channel_oil, | |
1b249e70 AK |
411 | vxlan_sg->orig_oif, PIM_OIF_FLAG_PROTO_VXLAN, |
412 | __func__); | |
39df629a AK |
413 | } |
414 | ||
415 | static void pim_vxlan_orig_mr_oif_del(struct pim_vxlan_sg *vxlan_sg) | |
416 | { | |
417 | struct interface *orig_oif; | |
418 | ||
419 | orig_oif = vxlan_sg->orig_oif; | |
420 | vxlan_sg->orig_oif = NULL; | |
421 | ||
422 | if (!(vxlan_sg->flags & PIM_VXLAN_SGF_OIF_INSTALLED)) | |
423 | return; | |
424 | ||
425 | if (PIM_DEBUG_VXLAN) | |
426 | zlog_debug("vxlan SG %s oif %s del", | |
427 | vxlan_sg->sg_str, orig_oif->name); | |
428 | ||
429 | vxlan_sg->flags &= ~PIM_VXLAN_SGF_OIF_INSTALLED; | |
430 | pim_channel_del_oif(vxlan_sg->up->channel_oil, | |
1b249e70 | 431 | orig_oif, PIM_OIF_FLAG_PROTO_VXLAN, __func__); |
39df629a AK |
432 | } |
433 | ||
434 | static inline struct interface *pim_vxlan_orig_mr_oif_get( | |
435 | struct pim_instance *pim) | |
436 | { | |
437 | return (vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED) ? | |
438 | pim->vxlan.peerlink_rif : NULL; | |
439 | } | |
440 | ||
a513da36 AK |
441 | /* Single VTEPs: IIF for the vxlan-origination-mroutes is lo or vrf-dev (if |
442 | * the mroute is in a non-default vrf). | |
443 | * Anycast VTEPs: IIF is the MLAG ISL/peerlink. | |
444 | */ | |
445 | static inline struct interface *pim_vxlan_orig_mr_iif_get( | |
446 | struct pim_instance *pim) | |
447 | { | |
448 | return ((vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED) && | |
449 | pim->vxlan.peerlink_rif) ? | |
450 | pim->vxlan.peerlink_rif : pim->vxlan.default_iif; | |
451 | } | |
452 | ||
453 | static bool pim_vxlan_orig_mr_add_is_ok(struct pim_vxlan_sg *vxlan_sg) | |
454 | { | |
455 | struct pim_interface *pim_ifp; | |
456 | ||
457 | vxlan_sg->iif = pim_vxlan_orig_mr_iif_get(vxlan_sg->pim); | |
458 | if (!vxlan_sg->iif) | |
459 | return false; | |
460 | ||
461 | pim_ifp = (struct pim_interface *)vxlan_sg->iif->info; | |
462 | if (!pim_ifp || (pim_ifp->mroute_vif_index < 0)) | |
463 | return false; | |
464 | ||
465 | return true; | |
466 | } | |
467 | ||
468 | static void pim_vxlan_orig_mr_install(struct pim_vxlan_sg *vxlan_sg) | |
469 | { | |
470 | pim_vxlan_orig_mr_up_add(vxlan_sg); | |
39df629a AK |
471 | |
472 | vxlan_sg->orig_oif = pim_vxlan_orig_mr_oif_get(vxlan_sg->pim); | |
473 | pim_vxlan_orig_mr_oif_add(vxlan_sg); | |
a513da36 AK |
474 | } |
475 | ||
476 | static void pim_vxlan_orig_mr_add(struct pim_vxlan_sg *vxlan_sg) | |
477 | { | |
478 | if (!pim_vxlan_orig_mr_add_is_ok(vxlan_sg)) | |
479 | return; | |
480 | ||
481 | if (PIM_DEBUG_VXLAN) | |
482 | zlog_debug("vxlan SG %s orig-mr add", vxlan_sg->sg_str); | |
483 | ||
484 | pim_vxlan_orig_mr_install(vxlan_sg); | |
485 | } | |
486 | ||
487 | static void pim_vxlan_orig_mr_del(struct pim_vxlan_sg *vxlan_sg) | |
488 | { | |
489 | if (PIM_DEBUG_VXLAN) | |
490 | zlog_debug("vxlan SG %s orig-mr del", vxlan_sg->sg_str); | |
39df629a AK |
491 | |
492 | pim_vxlan_orig_mr_oif_del(vxlan_sg); | |
a513da36 AK |
493 | pim_vxlan_orig_mr_up_del(vxlan_sg); |
494 | } | |
495 | ||
1ac88792 | 496 | static void pim_vxlan_orig_mr_iif_update(struct hash_bucket *bucket, void *arg) |
269c1fe1 | 497 | { |
f03999ca | 498 | struct interface *ifp; |
1ac88792 | 499 | struct pim_vxlan_sg *vxlan_sg = (struct pim_vxlan_sg *)bucket->data; |
269c1fe1 AK |
500 | struct interface *old_iif = vxlan_sg->iif; |
501 | ||
502 | if (!pim_vxlan_is_orig_mroute(vxlan_sg)) | |
503 | return; | |
504 | ||
f03999ca | 505 | ifp = pim_vxlan_orig_mr_iif_get(vxlan_sg->pim); |
269c1fe1 AK |
506 | if (PIM_DEBUG_VXLAN) |
507 | zlog_debug("vxlan SG %s iif changed from %s to %s", | |
508 | vxlan_sg->sg_str, | |
509 | old_iif ? old_iif->name : "-", | |
510 | ifp ? ifp->name : "-"); | |
511 | ||
512 | if (pim_vxlan_orig_mr_add_is_ok(vxlan_sg)) { | |
513 | if (vxlan_sg->up) { | |
514 | /* upstream exists but iif changed */ | |
515 | pim_vxlan_orig_mr_up_iif_update(vxlan_sg); | |
516 | } else { | |
517 | /* install mroute */ | |
518 | pim_vxlan_orig_mr_install(vxlan_sg); | |
519 | } | |
520 | } else { | |
521 | pim_vxlan_orig_mr_del(vxlan_sg); | |
522 | } | |
523 | } | |
524 | ||
332087df AK |
525 | /**************************** vxlan termination mroutes *********************** |
526 | * For every bum-mcast-grp registered by evpn a *G termination | |
527 | * mroute is setup by pimd. The purpose of this mroute is to pull down vxlan | |
528 | * packets with the bum-mcast-grp dip from the underlay and terminate the | |
529 | * tunnel. This is done by including the vxlan termination device (ipmr-lo) in | |
530 | * its OIL. The vxlan de-capsulated packets are subject to subsequent overlay | |
531 | * bridging. | |
532 | * | |
533 | * Sample mroute: | |
534 | * (0.0.0.0, 239.1.1.100) Iif: uplink-1 Oifs: ipmr-lo, uplink-1 | |
535 | *****************************************************************************/ | |
536 | struct pim_interface *pim_vxlan_get_term_ifp(struct pim_instance *pim) | |
537 | { | |
538 | return pim->vxlan.term_if ? | |
539 | (struct pim_interface *)pim->vxlan.term_if->info : NULL; | |
540 | } | |
541 | ||
542 | static void pim_vxlan_term_mr_oif_add(struct pim_vxlan_sg *vxlan_sg) | |
543 | { | |
544 | if (vxlan_sg->flags & PIM_VXLAN_SGF_OIF_INSTALLED) | |
545 | return; | |
546 | ||
547 | if (PIM_DEBUG_VXLAN) | |
548 | zlog_debug("vxlan SG %s term-oif %s add", | |
549 | vxlan_sg->sg_str, vxlan_sg->term_oif->name); | |
550 | ||
551 | if (pim_ifchannel_local_membership_add(vxlan_sg->term_oif, | |
448139e7 | 552 | &vxlan_sg->sg, true /*is_vxlan */)) { |
332087df | 553 | vxlan_sg->flags |= PIM_VXLAN_SGF_OIF_INSTALLED; |
664b2a31 AK |
554 | /* update the inherited OIL */ |
555 | /* XXX - I don't see the inherited OIL updated when a local | |
556 | * member is added. And that probably needs to be fixed. Till | |
557 | * that happens we do a force update on the inherited OIL | |
558 | * here. | |
559 | */ | |
560 | pim_upstream_inherited_olist(vxlan_sg->pim, vxlan_sg->up); | |
332087df AK |
561 | } else { |
562 | zlog_warn("vxlan SG %s term-oif %s add failed", | |
563 | vxlan_sg->sg_str, vxlan_sg->term_oif->name); | |
564 | } | |
565 | } | |
566 | ||
567 | static void pim_vxlan_term_mr_oif_del(struct pim_vxlan_sg *vxlan_sg) | |
568 | { | |
569 | if (!(vxlan_sg->flags & PIM_VXLAN_SGF_OIF_INSTALLED)) | |
570 | return; | |
571 | ||
572 | if (PIM_DEBUG_VXLAN) | |
573 | zlog_debug("vxlan SG %s oif %s del", | |
574 | vxlan_sg->sg_str, vxlan_sg->term_oif->name); | |
575 | ||
576 | vxlan_sg->flags &= ~PIM_VXLAN_SGF_OIF_INSTALLED; | |
577 | pim_ifchannel_local_membership_del(vxlan_sg->term_oif, &vxlan_sg->sg); | |
664b2a31 AK |
578 | /* update the inherited OIL */ |
579 | /* XXX - I don't see the inherited OIL updated when a local member | |
580 | * is deleted. And that probably needs to be fixed. Till that happens | |
581 | * we do a force update on the inherited OIL here. | |
582 | */ | |
583 | pim_upstream_inherited_olist(vxlan_sg->pim, vxlan_sg->up); | |
332087df AK |
584 | } |
585 | ||
95586137 AK |
586 | static void pim_vxlan_update_sg_entry_mlag(struct pim_instance *pim, |
587 | struct pim_upstream *up, bool inherit) | |
588 | { | |
589 | bool is_df = true; | |
590 | ||
591 | if (inherit && up->parent && | |
592 | PIM_UPSTREAM_FLAG_TEST_MLAG_VXLAN(up->parent->flags) && | |
593 | PIM_UPSTREAM_FLAG_TEST_MLAG_NON_DF(up->parent->flags)) | |
594 | is_df = false; | |
595 | ||
596 | pim_mlag_up_df_role_update(pim, up, is_df, "inherit_xg_df"); | |
597 | } | |
598 | ||
599 | /* We run MLAG DF election only on mroutes that have the termination | |
600 | * device ipmr-lo in the immediate OIL. This is only (*, G) entries at the | |
601 | * moment. For (S, G) entries that (with ipmr-lo in the inherited OIL) we | |
602 | * inherit the DF role from the (*, G) entry. | |
603 | */ | |
604 | void pim_vxlan_inherit_mlag_flags(struct pim_instance *pim, | |
605 | struct pim_upstream *up, bool inherit) | |
606 | { | |
607 | struct listnode *listnode; | |
608 | struct pim_upstream *child; | |
609 | ||
610 | for (ALL_LIST_ELEMENTS_RO(up->sources, listnode, | |
611 | child)) { | |
612 | pim_vxlan_update_sg_entry_mlag(pim, | |
613 | child, true /* inherit */); | |
614 | } | |
615 | } | |
616 | ||
332087df AK |
617 | static void pim_vxlan_term_mr_up_add(struct pim_vxlan_sg *vxlan_sg) |
618 | { | |
619 | struct pim_upstream *up; | |
620 | int flags = 0; | |
621 | ||
622 | if (vxlan_sg->up) { | |
623 | /* nothing to do */ | |
624 | return; | |
625 | } | |
626 | ||
627 | if (PIM_DEBUG_VXLAN) | |
628 | zlog_debug("vxlan SG %s term mroute-up add", | |
629 | vxlan_sg->sg_str); | |
630 | ||
631 | PIM_UPSTREAM_FLAG_SET_SRC_VXLAN_TERM(flags); | |
632 | /* enable MLAG designated-forwarder election on termination mroutes */ | |
633 | PIM_UPSTREAM_FLAG_SET_MLAG_VXLAN(flags); | |
634 | ||
15569c58 DA |
635 | up = pim_upstream_add(vxlan_sg->pim, &vxlan_sg->sg, NULL /* iif */, |
636 | flags, __func__, NULL); | |
332087df AK |
637 | vxlan_sg->up = up; |
638 | ||
639 | if (!up) { | |
640 | zlog_warn("vxlan SG %s term mroute-up add failed", | |
641 | vxlan_sg->sg_str); | |
95586137 | 642 | return; |
332087df | 643 | } |
95586137 AK |
644 | |
645 | /* update existing SG entries with the parent's MLAG flag */ | |
646 | pim_vxlan_inherit_mlag_flags(vxlan_sg->pim, up, true /*enable*/); | |
332087df AK |
647 | } |
648 | ||
649 | static void pim_vxlan_term_mr_up_del(struct pim_vxlan_sg *vxlan_sg) | |
650 | { | |
651 | struct pim_upstream *up = vxlan_sg->up; | |
652 | ||
653 | if (!up) | |
654 | return; | |
655 | ||
656 | if (PIM_DEBUG_VXLAN) | |
657 | zlog_debug("vxlan SG %s term mroute-up del", | |
658 | vxlan_sg->sg_str); | |
659 | vxlan_sg->up = NULL; | |
660 | if (up->flags & PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM) { | |
95586137 AK |
661 | /* update SG entries that are inheriting from this XG entry */ |
662 | pim_vxlan_inherit_mlag_flags(vxlan_sg->pim, up, | |
663 | false /*enable*/); | |
332087df AK |
664 | /* clear out all the vxlan related flags */ |
665 | up->flags &= ~(PIM_UPSTREAM_FLAG_MASK_SRC_VXLAN_TERM | | |
666 | PIM_UPSTREAM_FLAG_MASK_MLAG_VXLAN); | |
05ca004b | 667 | pim_mlag_up_local_del(vxlan_sg->pim, up); |
15569c58 | 668 | pim_upstream_del(vxlan_sg->pim, up, __func__); |
332087df AK |
669 | } |
670 | } | |
671 | ||
672 | static void pim_vxlan_term_mr_add(struct pim_vxlan_sg *vxlan_sg) | |
673 | { | |
674 | if (PIM_DEBUG_VXLAN) | |
675 | zlog_debug("vxlan SG %s term mroute add", vxlan_sg->sg_str); | |
676 | ||
677 | vxlan_sg->term_oif = vxlan_sg->pim->vxlan.term_if; | |
678 | if (!vxlan_sg->term_oif) | |
679 | /* defer termination mroute till we have a termination device */ | |
680 | return; | |
681 | ||
682 | pim_vxlan_term_mr_up_add(vxlan_sg); | |
683 | /* set up local membership for the term-oif */ | |
684 | pim_vxlan_term_mr_oif_add(vxlan_sg); | |
685 | } | |
686 | ||
687 | static void pim_vxlan_term_mr_del(struct pim_vxlan_sg *vxlan_sg) | |
688 | { | |
689 | if (PIM_DEBUG_VXLAN) | |
690 | zlog_debug("vxlan SG %s term mroute del", vxlan_sg->sg_str); | |
691 | ||
692 | /* remove local membership associated with the term oif */ | |
693 | pim_vxlan_term_mr_oif_del(vxlan_sg); | |
694 | /* remove references to the upstream entry */ | |
695 | pim_vxlan_term_mr_up_del(vxlan_sg); | |
696 | } | |
697 | ||
b583b035 | 698 | /************************** vxlan SG cache management ************************/ |
d8b87afe | 699 | static unsigned int pim_vxlan_sg_hash_key_make(const void *p) |
b583b035 | 700 | { |
d8b87afe | 701 | const struct pim_vxlan_sg *vxlan_sg = p; |
b583b035 | 702 | |
62f59b58 | 703 | return pim_sgaddr_hash(vxlan_sg->sg, 0); |
b583b035 AK |
704 | } |
705 | ||
706 | static bool pim_vxlan_sg_hash_eq(const void *p1, const void *p2) | |
707 | { | |
708 | const struct pim_vxlan_sg *sg1 = p1; | |
709 | const struct pim_vxlan_sg *sg2 = p2; | |
710 | ||
62f59b58 | 711 | return !pim_sgaddr_cmp(sg1->sg, sg2->sg); |
b583b035 AK |
712 | } |
713 | ||
714 | static struct pim_vxlan_sg *pim_vxlan_sg_new(struct pim_instance *pim, | |
6fff2cc6 | 715 | pim_sgaddr *sg) |
b583b035 AK |
716 | { |
717 | struct pim_vxlan_sg *vxlan_sg; | |
718 | ||
719 | vxlan_sg = XCALLOC(MTYPE_PIM_VXLAN_SG, sizeof(*vxlan_sg)); | |
720 | ||
721 | vxlan_sg->pim = pim; | |
722 | vxlan_sg->sg = *sg; | |
9bace5c2 | 723 | snprintfrr(vxlan_sg->sg_str, sizeof(vxlan_sg->sg_str), "%pSG", sg); |
b583b035 AK |
724 | |
725 | if (PIM_DEBUG_VXLAN) | |
726 | zlog_debug("vxlan SG %s alloc", vxlan_sg->sg_str); | |
727 | ||
728 | vxlan_sg = hash_get(pim->vxlan.sg_hash, vxlan_sg, hash_alloc_intern); | |
729 | ||
0309c55d AK |
730 | /* we register with the MLAG daemon in the first VxLAN SG and never |
731 | * de-register during that life of the pimd | |
732 | */ | |
733 | if (pim->vxlan.sg_hash->count == 1) { | |
734 | vxlan_mlag.flags |= PIM_VXLAN_MLAGF_DO_REG; | |
735 | pim_mlag_register(); | |
736 | } | |
737 | ||
b583b035 AK |
738 | return vxlan_sg; |
739 | } | |
740 | ||
6fff2cc6 | 741 | struct pim_vxlan_sg *pim_vxlan_sg_find(struct pim_instance *pim, pim_sgaddr *sg) |
b583b035 AK |
742 | { |
743 | struct pim_vxlan_sg lookup; | |
744 | ||
745 | lookup.sg = *sg; | |
746 | return hash_lookup(pim->vxlan.sg_hash, &lookup); | |
747 | } | |
748 | ||
6fff2cc6 | 749 | struct pim_vxlan_sg *pim_vxlan_sg_add(struct pim_instance *pim, pim_sgaddr *sg) |
b583b035 AK |
750 | { |
751 | struct pim_vxlan_sg *vxlan_sg; | |
752 | ||
753 | vxlan_sg = pim_vxlan_sg_find(pim, sg); | |
754 | if (vxlan_sg) | |
755 | return vxlan_sg; | |
756 | ||
757 | vxlan_sg = pim_vxlan_sg_new(pim, sg); | |
758 | ||
a513da36 AK |
759 | if (pim_vxlan_is_orig_mroute(vxlan_sg)) |
760 | pim_vxlan_orig_mr_add(vxlan_sg); | |
332087df AK |
761 | else |
762 | pim_vxlan_term_mr_add(vxlan_sg); | |
a513da36 | 763 | |
b583b035 AK |
764 | return vxlan_sg; |
765 | } | |
766 | ||
514bda47 | 767 | static void pim_vxlan_sg_del_item(struct pim_vxlan_sg *vxlan_sg) |
b583b035 | 768 | { |
a513da36 AK |
769 | vxlan_sg->flags |= PIM_VXLAN_SGF_DEL_IN_PROG; |
770 | ||
b9f3a51c AK |
771 | pim_vxlan_del_work(vxlan_sg); |
772 | ||
a513da36 AK |
773 | if (pim_vxlan_is_orig_mroute(vxlan_sg)) |
774 | pim_vxlan_orig_mr_del(vxlan_sg); | |
332087df AK |
775 | else |
776 | pim_vxlan_term_mr_del(vxlan_sg); | |
a513da36 | 777 | |
b583b035 AK |
778 | if (PIM_DEBUG_VXLAN) |
779 | zlog_debug("vxlan SG %s free", vxlan_sg->sg_str); | |
780 | ||
781 | XFREE(MTYPE_PIM_VXLAN_SG, vxlan_sg); | |
782 | } | |
783 | ||
6fff2cc6 | 784 | void pim_vxlan_sg_del(struct pim_instance *pim, pim_sgaddr *sg) |
514bda47 DS |
785 | { |
786 | struct pim_vxlan_sg *vxlan_sg; | |
787 | ||
788 | vxlan_sg = pim_vxlan_sg_find(pim, sg); | |
789 | if (!vxlan_sg) | |
790 | return; | |
791 | ||
514bda47 | 792 | hash_release(pim->vxlan.sg_hash, vxlan_sg); |
7791cff3 | 793 | pim_vxlan_sg_del_item(vxlan_sg); |
514bda47 DS |
794 | } |
795 | ||
48b33862 | 796 | /******************************* MLAG handling *******************************/ |
0309c55d AK |
797 | bool pim_vxlan_do_mlag_reg(void) |
798 | { | |
799 | return (vxlan_mlag.flags & PIM_VXLAN_MLAGF_DO_REG); | |
800 | } | |
801 | ||
48b33862 AK |
802 | /* The peerlink sub-interface is added as an OIF to the origination-mroute. |
803 | * This is done to send a copy of the multicast-vxlan encapsulated traffic | |
804 | * to the MLAG peer which may mroute it over the underlay if there are any | |
805 | * interested receivers. | |
806 | */ | |
1ac88792 | 807 | static void pim_vxlan_sg_peerlink_oif_update(struct hash_bucket *bucket, |
7f5818fb | 808 | void *arg) |
48b33862 AK |
809 | { |
810 | struct interface *new_oif = (struct interface *)arg; | |
1ac88792 | 811 | struct pim_vxlan_sg *vxlan_sg = (struct pim_vxlan_sg *)bucket->data; |
48b33862 AK |
812 | |
813 | if (!pim_vxlan_is_orig_mroute(vxlan_sg)) | |
814 | return; | |
815 | ||
816 | if (vxlan_sg->orig_oif == new_oif) | |
817 | return; | |
818 | ||
819 | pim_vxlan_orig_mr_oif_del(vxlan_sg); | |
820 | ||
821 | vxlan_sg->orig_oif = new_oif; | |
822 | pim_vxlan_orig_mr_oif_add(vxlan_sg); | |
823 | } | |
824 | ||
825 | /* In the case of anycast VTEPs the VTEP-PIP must be used as the | |
826 | * register source. | |
827 | */ | |
828 | bool pim_vxlan_get_register_src(struct pim_instance *pim, | |
829 | struct pim_upstream *up, struct in_addr *src_p) | |
830 | { | |
831 | if (!(vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED)) | |
832 | return true; | |
833 | ||
834 | /* if address is not available suppress the pim-register */ | |
835 | if (vxlan_mlag.reg_addr.s_addr == INADDR_ANY) | |
836 | return false; | |
837 | ||
838 | *src_p = vxlan_mlag.reg_addr; | |
839 | return true; | |
840 | } | |
841 | ||
842 | void pim_vxlan_mlag_update(bool enable, bool peer_state, uint32_t role, | |
843 | struct interface *peerlink_rif, | |
844 | struct in_addr *reg_addr) | |
845 | { | |
846 | struct pim_instance *pim; | |
48b33862 AK |
847 | char addr_buf[INET_ADDRSTRLEN]; |
848 | struct pim_interface *pim_ifp = NULL; | |
849 | ||
850 | if (PIM_DEBUG_VXLAN) { | |
851 | inet_ntop(AF_INET, reg_addr, | |
852 | addr_buf, INET_ADDRSTRLEN); | |
853 | zlog_debug("vxlan MLAG update %s state %s role %d rif %s addr %s", | |
854 | enable ? "enable" : "disable", | |
855 | peer_state ? "up" : "down", | |
856 | role, | |
857 | peerlink_rif ? peerlink_rif->name : "-", | |
858 | addr_buf); | |
859 | } | |
860 | ||
861 | /* XXX: for now vxlan termination is only possible in the default VRF | |
862 | * when that changes this will need to change to iterate all VRFs | |
863 | */ | |
864 | pim = pim_get_pim_instance(VRF_DEFAULT); | |
865 | ||
e2116917 | 866 | if (!pim) { |
867 | if (PIM_DEBUG_VXLAN) | |
868 | zlog_debug("%s: Unable to find pim instance", __func__); | |
869 | return; | |
870 | } | |
871 | ||
48b33862 AK |
872 | if (enable) |
873 | vxlan_mlag.flags |= PIM_VXLAN_MLAGF_ENABLED; | |
874 | else | |
875 | vxlan_mlag.flags &= ~PIM_VXLAN_MLAGF_ENABLED; | |
876 | ||
877 | if (vxlan_mlag.peerlink_rif != peerlink_rif) | |
878 | vxlan_mlag.peerlink_rif = peerlink_rif; | |
879 | ||
880 | vxlan_mlag.reg_addr = *reg_addr; | |
881 | vxlan_mlag.peer_state = peer_state; | |
882 | vxlan_mlag.role = role; | |
883 | ||
884 | /* process changes */ | |
885 | if (vxlan_mlag.peerlink_rif) | |
886 | pim_ifp = (struct pim_interface *)vxlan_mlag.peerlink_rif->info; | |
887 | if ((vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED) && | |
888 | pim_ifp && (pim_ifp->mroute_vif_index > 0)) | |
889 | pim_vxlan_set_peerlink_rif(pim, peerlink_rif); | |
890 | else | |
891 | pim_vxlan_set_peerlink_rif(pim, NULL); | |
48b33862 AK |
892 | } |
893 | ||
269c1fe1 AK |
894 | /****************************** misc callbacks *******************************/ |
895 | static void pim_vxlan_set_default_iif(struct pim_instance *pim, | |
896 | struct interface *ifp) | |
897 | { | |
898 | struct interface *old_iif; | |
899 | ||
900 | if (pim->vxlan.default_iif == ifp) | |
901 | return; | |
902 | ||
903 | old_iif = pim->vxlan.default_iif; | |
904 | if (PIM_DEBUG_VXLAN) | |
905 | zlog_debug("%s: vxlan default iif changed from %s to %s", | |
15569c58 DA |
906 | __func__, old_iif ? old_iif->name : "-", |
907 | ifp ? ifp->name : "-"); | |
269c1fe1 AK |
908 | |
909 | old_iif = pim_vxlan_orig_mr_iif_get(pim); | |
910 | pim->vxlan.default_iif = ifp; | |
911 | ifp = pim_vxlan_orig_mr_iif_get(pim); | |
912 | if (old_iif == ifp) | |
913 | return; | |
914 | ||
915 | if (PIM_DEBUG_VXLAN) | |
15569c58 DA |
916 | zlog_debug("%s: vxlan orig iif changed from %s to %s", __func__, |
917 | old_iif ? old_iif->name : "-", | |
918 | ifp ? ifp->name : "-"); | |
269c1fe1 AK |
919 | |
920 | /* add/del upstream entries for the existing vxlan SG when the | |
921 | * interface becomes available | |
922 | */ | |
b21e0c93 AK |
923 | if (pim->vxlan.sg_hash) |
924 | hash_iterate(pim->vxlan.sg_hash, | |
f03999ca AK |
925 | pim_vxlan_orig_mr_iif_update, NULL); |
926 | } | |
927 | ||
928 | static void pim_vxlan_up_cost_update(struct pim_instance *pim, | |
929 | struct pim_upstream *up, | |
930 | struct interface *old_peerlink_rif) | |
931 | { | |
932 | if (!PIM_UPSTREAM_FLAG_TEST_MLAG_VXLAN(up->flags)) | |
933 | return; | |
934 | ||
935 | if (up->rpf.source_nexthop.interface && | |
936 | ((up->rpf.source_nexthop.interface == | |
937 | pim->vxlan.peerlink_rif) || | |
938 | (up->rpf.source_nexthop.interface == | |
939 | old_peerlink_rif))) { | |
940 | if (PIM_DEBUG_VXLAN) | |
941 | zlog_debug("RPF cost adjust for %s on peerlink-rif (old: %s, new: %s) change", | |
942 | up->sg_str, | |
943 | old_peerlink_rif ? | |
944 | old_peerlink_rif->name : "-", | |
945 | pim->vxlan.peerlink_rif ? | |
946 | pim->vxlan.peerlink_rif->name : "-"); | |
947 | pim_mlag_up_local_add(pim, up); | |
948 | } | |
949 | } | |
950 | ||
1ac88792 | 951 | static void pim_vxlan_term_mr_cost_update(struct hash_bucket *bucket, void *arg) |
f03999ca AK |
952 | { |
953 | struct interface *old_peerlink_rif = (struct interface *)arg; | |
1ac88792 | 954 | struct pim_vxlan_sg *vxlan_sg = (struct pim_vxlan_sg *)bucket->data; |
f03999ca AK |
955 | struct pim_upstream *up; |
956 | struct listnode *listnode; | |
957 | struct pim_upstream *child; | |
958 | ||
959 | if (pim_vxlan_is_orig_mroute(vxlan_sg)) | |
960 | return; | |
961 | ||
962 | /* Lookup all XG and SG entries with RPF-interface peerlink_rif */ | |
963 | up = vxlan_sg->up; | |
964 | if (!up) | |
965 | return; | |
966 | ||
967 | pim_vxlan_up_cost_update(vxlan_sg->pim, up, | |
968 | old_peerlink_rif); | |
969 | ||
970 | for (ALL_LIST_ELEMENTS_RO(up->sources, listnode, | |
971 | child)) | |
972 | pim_vxlan_up_cost_update(vxlan_sg->pim, child, | |
973 | old_peerlink_rif); | |
974 | } | |
975 | ||
1ac88792 | 976 | static void pim_vxlan_sg_peerlink_rif_update(struct hash_bucket *bucket, |
7f5818fb | 977 | void *arg) |
f03999ca | 978 | { |
1ac88792 IR |
979 | pim_vxlan_orig_mr_iif_update(bucket, NULL); |
980 | pim_vxlan_term_mr_cost_update(bucket, arg); | |
269c1fe1 AK |
981 | } |
982 | ||
983 | static void pim_vxlan_set_peerlink_rif(struct pim_instance *pim, | |
984 | struct interface *ifp) | |
985 | { | |
986 | struct interface *old_iif; | |
6823b1dc AK |
987 | struct interface *new_iif; |
988 | struct interface *old_oif; | |
989 | struct interface *new_oif; | |
269c1fe1 AK |
990 | |
991 | if (pim->vxlan.peerlink_rif == ifp) | |
992 | return; | |
993 | ||
994 | old_iif = pim->vxlan.peerlink_rif; | |
995 | if (PIM_DEBUG_VXLAN) | |
996 | zlog_debug("%s: vxlan peerlink_rif changed from %s to %s", | |
15569c58 DA |
997 | __func__, old_iif ? old_iif->name : "-", |
998 | ifp ? ifp->name : "-"); | |
269c1fe1 AK |
999 | |
1000 | old_iif = pim_vxlan_orig_mr_iif_get(pim); | |
6823b1dc | 1001 | old_oif = pim_vxlan_orig_mr_oif_get(pim); |
269c1fe1 | 1002 | pim->vxlan.peerlink_rif = ifp; |
269c1fe1 | 1003 | |
6823b1dc AK |
1004 | new_iif = pim_vxlan_orig_mr_iif_get(pim); |
1005 | if (old_iif != new_iif) { | |
1006 | if (PIM_DEBUG_VXLAN) | |
1007 | zlog_debug("%s: vxlan orig iif changed from %s to %s", | |
15569c58 DA |
1008 | __func__, old_iif ? old_iif->name : "-", |
1009 | new_iif ? new_iif->name : "-"); | |
269c1fe1 | 1010 | |
6823b1dc AK |
1011 | /* add/del upstream entries for the existing vxlan SG when the |
1012 | * interface becomes available | |
1013 | */ | |
1014 | if (pim->vxlan.sg_hash) | |
1015 | hash_iterate(pim->vxlan.sg_hash, | |
1016 | pim_vxlan_sg_peerlink_rif_update, | |
1017 | old_iif); | |
1018 | } | |
1019 | ||
1020 | new_oif = pim_vxlan_orig_mr_oif_get(pim); | |
1021 | if (old_oif != new_oif) { | |
1022 | if (PIM_DEBUG_VXLAN) | |
1023 | zlog_debug("%s: vxlan orig oif changed from %s to %s", | |
15569c58 DA |
1024 | __func__, old_oif ? old_oif->name : "-", |
1025 | new_oif ? new_oif->name : "-"); | |
6823b1dc AK |
1026 | if (pim->vxlan.sg_hash) |
1027 | hash_iterate(pim->vxlan.sg_hash, | |
1028 | pim_vxlan_sg_peerlink_oif_update, | |
1029 | new_oif); | |
1030 | } | |
269c1fe1 AK |
1031 | } |
1032 | ||
1ac88792 | 1033 | static void pim_vxlan_term_mr_oif_update(struct hash_bucket *bucket, void *arg) |
650d9ad1 AK |
1034 | { |
1035 | struct interface *ifp = (struct interface *)arg; | |
1ac88792 | 1036 | struct pim_vxlan_sg *vxlan_sg = (struct pim_vxlan_sg *)bucket->data; |
650d9ad1 AK |
1037 | |
1038 | if (pim_vxlan_is_orig_mroute(vxlan_sg)) | |
1039 | return; | |
1040 | ||
1041 | if (vxlan_sg->term_oif == ifp) | |
1042 | return; | |
1043 | ||
1044 | if (PIM_DEBUG_VXLAN) | |
1045 | zlog_debug("vxlan SG %s term oif changed from %s to %s", | |
1046 | vxlan_sg->sg_str, | |
1047 | vxlan_sg->term_oif ? vxlan_sg->term_oif->name : "-", | |
1048 | ifp ? ifp->name : "-"); | |
1049 | ||
1050 | pim_vxlan_term_mr_del(vxlan_sg); | |
1051 | vxlan_sg->term_oif = ifp; | |
1052 | pim_vxlan_term_mr_add(vxlan_sg); | |
1053 | } | |
1054 | ||
1055 | static void pim_vxlan_term_oif_update(struct pim_instance *pim, | |
1056 | struct interface *ifp) | |
1057 | { | |
1058 | if (pim->vxlan.term_if == ifp) | |
1059 | return; | |
1060 | ||
1061 | if (PIM_DEBUG_VXLAN) | |
1062 | zlog_debug("vxlan term oif changed from %s to %s", | |
1063 | pim->vxlan.term_if ? pim->vxlan.term_if->name : "-", | |
1064 | ifp ? ifp->name : "-"); | |
1065 | ||
1066 | pim->vxlan.term_if = ifp; | |
1067 | if (pim->vxlan.sg_hash) | |
1068 | hash_iterate(pim->vxlan.sg_hash, | |
1069 | pim_vxlan_term_mr_oif_update, ifp); | |
1070 | } | |
1071 | ||
269c1fe1 AK |
1072 | void pim_vxlan_add_vif(struct interface *ifp) |
1073 | { | |
1074 | struct pim_interface *pim_ifp = ifp->info; | |
1075 | struct pim_instance *pim = pim_ifp->pim; | |
1076 | ||
d3cc1e45 | 1077 | if (pim->vrf->vrf_id != VRF_DEFAULT) |
269c1fe1 AK |
1078 | return; |
1079 | ||
608c8870 | 1080 | if (if_is_loopback(ifp)) |
269c1fe1 AK |
1081 | pim_vxlan_set_default_iif(pim, ifp); |
1082 | ||
1083 | if (vxlan_mlag.flags & PIM_VXLAN_MLAGF_ENABLED && | |
1084 | (ifp == vxlan_mlag.peerlink_rif)) | |
1085 | pim_vxlan_set_peerlink_rif(pim, ifp); | |
650d9ad1 AK |
1086 | |
1087 | if (pim->vxlan.term_if_cfg == ifp) | |
1088 | pim_vxlan_term_oif_update(pim, ifp); | |
269c1fe1 AK |
1089 | } |
1090 | ||
1091 | void pim_vxlan_del_vif(struct interface *ifp) | |
1092 | { | |
1093 | struct pim_interface *pim_ifp = ifp->info; | |
1094 | struct pim_instance *pim = pim_ifp->pim; | |
1095 | ||
d3cc1e45 | 1096 | if (pim->vrf->vrf_id != VRF_DEFAULT) |
269c1fe1 AK |
1097 | return; |
1098 | ||
1099 | if (pim->vxlan.default_iif == ifp) | |
1100 | pim_vxlan_set_default_iif(pim, NULL); | |
1101 | ||
1102 | if (pim->vxlan.peerlink_rif == ifp) | |
1103 | pim_vxlan_set_peerlink_rif(pim, NULL); | |
0a2dcc1c | 1104 | |
650d9ad1 AK |
1105 | if (pim->vxlan.term_if == ifp) |
1106 | pim_vxlan_term_oif_update(pim, NULL); | |
0a2dcc1c AK |
1107 | } |
1108 | ||
650d9ad1 | 1109 | /* enable pim implicitly on the termination device add */ |
0a2dcc1c AK |
1110 | void pim_vxlan_add_term_dev(struct pim_instance *pim, |
1111 | struct interface *ifp) | |
1112 | { | |
1113 | struct pim_interface *pim_ifp; | |
1114 | ||
650d9ad1 | 1115 | if (pim->vxlan.term_if_cfg == ifp) |
0a2dcc1c AK |
1116 | return; |
1117 | ||
1118 | if (PIM_DEBUG_VXLAN) | |
650d9ad1 | 1119 | zlog_debug("vxlan term oif cfg changed from %s to %s", |
6c1b7a8c MS |
1120 | pim->vxlan.term_if_cfg ? |
1121 | pim->vxlan.term_if_cfg->name : "-", | |
1122 | ifp->name); | |
650d9ad1 AK |
1123 | |
1124 | pim->vxlan.term_if_cfg = ifp; | |
0a2dcc1c AK |
1125 | |
1126 | /* enable pim on the term ifp */ | |
1127 | pim_ifp = (struct pim_interface *)ifp->info; | |
5121278e | 1128 | if (pim_ifp) { |
b6fcc0b7 | 1129 | pim_ifp->pim_enable = true; |
650d9ad1 AK |
1130 | /* ifp is already oper up; activate it as a term dev */ |
1131 | if (pim_ifp->mroute_vif_index >= 0) | |
1132 | pim_vxlan_term_oif_update(pim, ifp); | |
5121278e | 1133 | } else { |
650d9ad1 | 1134 | /* ensure that pimreg exists before using the newly created |
5121278e AK |
1135 | * vxlan termination device |
1136 | */ | |
1137 | pim_if_create_pimreg(pim); | |
6c1b7a8c MS |
1138 | (void)pim_if_new(ifp, false /*igmp*/, true /*pim*/, |
1139 | false /*pimreg*/, true /*vxlan_term*/); | |
5121278e | 1140 | } |
0a2dcc1c AK |
1141 | } |
1142 | ||
650d9ad1 | 1143 | /* disable pim implicitly, if needed, on the termination device deletion */ |
0a2dcc1c AK |
1144 | void pim_vxlan_del_term_dev(struct pim_instance *pim) |
1145 | { | |
650d9ad1 | 1146 | struct interface *ifp = pim->vxlan.term_if_cfg; |
0a2dcc1c AK |
1147 | struct pim_interface *pim_ifp; |
1148 | ||
1149 | if (PIM_DEBUG_VXLAN) | |
650d9ad1 AK |
1150 | zlog_debug("vxlan term oif cfg changed from %s to -", |
1151 | ifp->name); | |
0a2dcc1c | 1152 | |
650d9ad1 | 1153 | pim->vxlan.term_if_cfg = NULL; |
0a2dcc1c AK |
1154 | |
1155 | pim_ifp = (struct pim_interface *)ifp->info; | |
1156 | if (pim_ifp) { | |
b6fcc0b7 | 1157 | pim_ifp->pim_enable = false; |
4fecac21 | 1158 | if (!pim_ifp->gm_enable) |
0a2dcc1c AK |
1159 | pim_if_delete(ifp); |
1160 | } | |
0a2dcc1c AK |
1161 | } |
1162 | ||
b583b035 AK |
1163 | void pim_vxlan_init(struct pim_instance *pim) |
1164 | { | |
1165 | char hash_name[64]; | |
1166 | ||
1167 | snprintf(hash_name, sizeof(hash_name), | |
1168 | "PIM %s vxlan SG hash", pim->vrf->name); | |
1169 | pim->vxlan.sg_hash = hash_create(pim_vxlan_sg_hash_key_make, | |
1170 | pim_vxlan_sg_hash_eq, hash_name); | |
1171 | } | |
1172 | ||
1173 | void pim_vxlan_exit(struct pim_instance *pim) | |
1174 | { | |
d8bc11a5 DS |
1175 | hash_clean_and_free(&pim->vxlan.sg_hash, |
1176 | (void (*)(void *))pim_vxlan_sg_del_item); | |
b583b035 | 1177 | } |
3c582f62 DS |
1178 | |
1179 | void pim_vxlan_terminate(void) | |
1180 | { | |
1181 | pim_vxlan_work_timer_setup(false); | |
1182 | } |