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18a7a601 | 1 | /* |
2 | * Zebra VxLAN (EVPN) Data structures and definitions | |
3 | * These are "internal" to this function. | |
4 | * Copyright (C) 2016, 2017 Cumulus Networks, Inc. | |
5 | * | |
6 | * This file is part of FRR. | |
7 | * | |
8 | * FRR is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * FRR is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with FRR; see the file COPYING. If not, write to the Free | |
20 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
21 | * 02111-1307, USA. | |
22 | */ | |
23 | ||
24 | #ifndef _ZEBRA_VXLAN_PRIVATE_H | |
25 | #define _ZEBRA_VXLAN_PRIVATE_H | |
26 | ||
27 | #include <zebra.h> | |
28 | ||
29 | #include <zebra.h> | |
30 | ||
31 | #include "if.h" | |
32 | #include "linklist.h" | |
655b04d1 | 33 | #include "zebra_vxlan.h" |
18a7a601 | 34 | |
b7cfce93 MK |
35 | #define ERR_STR_SZ 256 |
36 | ||
18a7a601 | 37 | /* definitions */ |
38 | typedef struct zebra_vni_t_ zebra_vni_t; | |
39 | typedef struct zebra_vtep_t_ zebra_vtep_t; | |
4122e252 | 40 | typedef struct zebra_mac_t_ zebra_mac_t; |
41 | typedef struct zebra_neigh_t_ zebra_neigh_t; | |
b7cfce93 | 42 | typedef struct zebra_l3vni_t_ zebra_l3vni_t; |
18a7a601 | 43 | |
44 | /* | |
45 | * VTEP info | |
46 | * | |
47 | * Right now, this just has each remote VTEP's IP address. | |
48 | */ | |
d62a17ae | 49 | struct zebra_vtep_t_ { |
50 | /* Remote IP. */ | |
51 | /* NOTE: Can only be IPv4 right now. */ | |
52 | struct in_addr vtep_ip; | |
53 | ||
54 | /* Links. */ | |
55 | struct zebra_vtep_t_ *next; | |
56 | struct zebra_vtep_t_ *prev; | |
18a7a601 | 57 | }; |
58 | ||
59 | ||
60 | /* | |
61 | * VNI hash table | |
62 | * | |
63 | * Contains information pertaining to a VNI: | |
64 | * - the list of remote VTEPs (with this VNI) | |
65 | */ | |
d62a17ae | 66 | struct zebra_vni_t_ { |
67 | /* VNI - key */ | |
68 | vni_t vni; | |
18a7a601 | 69 | |
1a98c087 | 70 | /* Flag for advertising gw macip */ |
d7c0a89a | 71 | uint8_t advertise_gw_macip; |
1a98c087 | 72 | |
31310b25 | 73 | /* Flag for advertising gw macip */ |
d7c0a89a | 74 | uint8_t advertise_subnet; |
31310b25 | 75 | |
d62a17ae | 76 | /* Corresponding VxLAN interface. */ |
77 | struct interface *vxlan_if; | |
18a7a601 | 78 | |
d62a17ae | 79 | /* List of remote VTEPs */ |
80 | zebra_vtep_t *vteps; | |
18a7a601 | 81 | |
d62a17ae | 82 | /* Local IP */ |
83 | struct in_addr local_vtep_ip; | |
4122e252 | 84 | |
b7cfce93 MK |
85 | /* tenant VRF, if any */ |
86 | vrf_id_t vrf_id; | |
87 | ||
d62a17ae | 88 | /* List of local or remote MAC */ |
89 | struct hash *mac_table; | |
4122e252 | 90 | |
d62a17ae | 91 | /* List of local or remote neighbors (MAC+IP) */ |
92 | struct hash *neigh_table; | |
4122e252 | 93 | }; |
94 | ||
b7cfce93 MK |
95 | /* L3 VNI hash table */ |
96 | struct zebra_l3vni_t_ { | |
97 | ||
98 | /* VNI key */ | |
99 | vni_t vni; | |
100 | ||
101 | /* vrf_id */ | |
102 | vrf_id_t vrf_id; | |
103 | ||
c48d9f5f MK |
104 | uint32_t filter; |
105 | #define PREFIX_ROUTES_ONLY (1 << 0) /* l3-vni used for prefix routes only */ | |
106 | ||
b67a60d2 | 107 | /* Local IP */ |
108 | struct in_addr local_vtep_ip; | |
109 | ||
b7cfce93 MK |
110 | /* kernel interface for l3vni */ |
111 | struct interface *vxlan_if; | |
112 | ||
113 | /* SVI interface corresponding to the l3vni */ | |
114 | struct interface *svi_if; | |
115 | ||
116 | /* list of L2 VNIs associated with the L3 VNI */ | |
117 | struct list *l2vnis; | |
118 | ||
119 | /* list of remote router-macs */ | |
120 | struct hash *rmac_table; | |
121 | ||
122 | /* list of remote vtep-ip neigh */ | |
123 | struct hash *nh_table; | |
124 | }; | |
125 | ||
126 | /* get the vx-intf name for l3vni */ | |
127 | static inline const char *zl3vni_vxlan_if_name(zebra_l3vni_t *zl3vni) | |
128 | { | |
129 | return zl3vni->vxlan_if ? zl3vni->vxlan_if->name : "None"; | |
130 | } | |
131 | ||
132 | /* get the svi intf name for l3vni */ | |
133 | static inline const char *zl3vni_svi_if_name(zebra_l3vni_t *zl3vni) | |
134 | { | |
135 | return zl3vni->svi_if ? zl3vni->svi_if->name : "None"; | |
136 | } | |
137 | ||
138 | /* get the vrf name for l3vni */ | |
139 | static inline const char *zl3vni_vrf_name(zebra_l3vni_t *zl3vni) | |
140 | { | |
141 | return vrf_id_to_name(zl3vni->vrf_id); | |
142 | } | |
143 | ||
144 | /* get the rmac string */ | |
145 | static inline const char *zl3vni_rmac2str(zebra_l3vni_t *zl3vni, char *buf, | |
146 | int size) | |
147 | { | |
148 | char *ptr; | |
149 | ||
150 | if (!buf) | |
151 | ptr = (char *)XMALLOC(MTYPE_TMP, | |
152 | ETHER_ADDR_STRLEN * sizeof(char)); | |
153 | else { | |
154 | assert(size >= ETHER_ADDR_STRLEN); | |
155 | ptr = buf; | |
156 | } | |
157 | ||
158 | if (zl3vni->svi_if) | |
159 | snprintf(ptr, (ETHER_ADDR_STRLEN), | |
160 | "%02x:%02x:%02x:%02x:%02x:%02x", | |
161 | (uint8_t)zl3vni->svi_if->hw_addr[0], | |
162 | (uint8_t)zl3vni->svi_if->hw_addr[1], | |
163 | (uint8_t)zl3vni->svi_if->hw_addr[2], | |
164 | (uint8_t)zl3vni->svi_if->hw_addr[3], | |
165 | (uint8_t)zl3vni->svi_if->hw_addr[4], | |
166 | (uint8_t)zl3vni->svi_if->hw_addr[5]); | |
167 | else | |
168 | snprintf(ptr, ETHER_ADDR_STRLEN, "None"); | |
169 | ||
170 | return ptr; | |
171 | } | |
172 | ||
173 | /* | |
174 | * l3-vni is oper up when: | |
655b04d1 | 175 | * 0. if EVPN is enabled (advertise-all-vni cfged) |
b7cfce93 MK |
176 | * 1. it is associated to a vxlan-intf |
177 | * 2. Associated vxlan-intf is oper up | |
178 | * 3. it is associated to an SVI | |
179 | * 4. associated SVI is oper up | |
180 | */ | |
181 | static inline int is_l3vni_oper_up(zebra_l3vni_t *zl3vni) | |
182 | { | |
996c9314 LB |
183 | return (is_evpn_enabled() && zl3vni && (zl3vni->vrf_id != VRF_UNKNOWN) |
184 | && zl3vni->vxlan_if && if_is_operative(zl3vni->vxlan_if) | |
185 | && zl3vni->svi_if && if_is_operative(zl3vni->svi_if)); | |
b7cfce93 MK |
186 | } |
187 | ||
188 | static inline const char *zl3vni_state2str(zebra_l3vni_t *zl3vni) | |
189 | { | |
190 | if (!zl3vni) | |
191 | return NULL; | |
192 | ||
193 | if (is_l3vni_oper_up(zl3vni)) | |
194 | return "Up"; | |
195 | else | |
196 | return "Down"; | |
197 | ||
198 | return NULL; | |
199 | } | |
200 | ||
201 | static inline vrf_id_t zl3vni_vrf_id(zebra_l3vni_t *zl3vni) | |
202 | { | |
203 | return zl3vni->vrf_id; | |
204 | } | |
205 | ||
996c9314 | 206 | static inline void zl3vni_get_rmac(zebra_l3vni_t *zl3vni, struct ethaddr *rmac) |
b7cfce93 MK |
207 | { |
208 | if (!zl3vni) | |
209 | return; | |
210 | ||
211 | if (!is_l3vni_oper_up(zl3vni)) | |
212 | return; | |
213 | ||
214 | if (zl3vni->svi_if && if_is_operative(zl3vni->svi_if)) | |
215 | memcpy(rmac->octet, zl3vni->svi_if->hw_addr, ETH_ALEN); | |
216 | } | |
217 | ||
5e1b0650 DS |
218 | struct host_rb_entry { |
219 | RB_ENTRY(host_rb_entry) hl_entry; | |
220 | ||
221 | struct prefix p; | |
222 | }; | |
223 | ||
85442b09 DS |
224 | RB_HEAD(host_rb_tree_entry, host_rb_entry); |
225 | RB_PROTOTYPE(host_rb_tree_entry, host_rb_entry, hl_entry, | |
5e1b0650 | 226 | host_rb_entry_compare); |
4122e252 | 227 | /* |
228 | * MAC hash table. | |
229 | * | |
230 | * This table contains the MAC addresses pertaining to this VNI. | |
231 | * This includes local MACs learnt on an attached VLAN that maps | |
232 | * to this VNI as well as remote MACs learnt and installed by BGP. | |
233 | * Local MACs will be known either on a VLAN sub-interface or | |
234 | * on (port, VLAN); however, it is sufficient for zebra to maintain | |
235 | * against the VNI i.e., it does not need to retain the local "port" | |
236 | * information. The correct VNI will be obtained as zebra maintains | |
237 | * the mapping (of VLAN to VNI). | |
238 | */ | |
d62a17ae | 239 | struct zebra_mac_t_ { |
240 | /* MAC address. */ | |
241 | struct ethaddr macaddr; | |
4122e252 | 242 | |
d7c0a89a | 243 | uint32_t flags; |
4122e252 | 244 | #define ZEBRA_MAC_LOCAL 0x01 |
245 | #define ZEBRA_MAC_REMOTE 0x02 | |
246 | #define ZEBRA_MAC_AUTO 0x04 /* Auto created for neighbor. */ | |
c85c03c7 | 247 | #define ZEBRA_MAC_STICKY 0x08 /* Static MAC */ |
b7cfce93 | 248 | #define ZEBRA_MAC_REMOTE_RMAC 0x10 /* remote router mac */ |
ead40654 | 249 | #define ZEBRA_MAC_DEF_GW 0x20 |
51f4dab4 AK |
250 | /* remote VTEP advertised MAC as default GW */ |
251 | #define ZEBRA_MAC_REMOTE_DEF_GW 0x40 | |
4122e252 | 252 | |
d62a17ae | 253 | /* Local or remote info. */ |
254 | union { | |
255 | struct { | |
256 | ifindex_t ifindex; | |
257 | vlanid_t vid; | |
258 | } local; | |
4122e252 | 259 | |
d62a17ae | 260 | struct in_addr r_vtep_ip; |
261 | } fwd_info; | |
4122e252 | 262 | |
f07e1c99 | 263 | /* Mobility sequence numbers associated with this entry. */ |
264 | uint32_t rem_seq; | |
265 | uint32_t loc_seq; | |
266 | ||
b6938a74 MK |
267 | /* List of neigh associated with this mac */ |
268 | struct list *neigh_list; | |
b7cfce93 | 269 | |
6134fd82 | 270 | /* list of hosts pointing to this remote RMAC */ |
85442b09 | 271 | struct host_rb_tree_entry host_rb; |
4122e252 | 272 | }; |
273 | ||
274 | /* | |
275 | * Context for MAC hash walk - used by callbacks. | |
276 | */ | |
d62a17ae | 277 | struct mac_walk_ctx { |
278 | zebra_vni_t *zvni; /* VNI hash */ | |
279 | struct zebra_vrf *zvrf; /* VRF - for client notification. */ | |
280 | int uninstall; /* uninstall from kernel? */ | |
281 | int upd_client; /* uninstall from client? */ | |
282 | ||
d7c0a89a | 283 | uint32_t flags; |
4122e252 | 284 | #define DEL_LOCAL_MAC 0x1 |
285 | #define DEL_REMOTE_MAC 0x2 | |
286 | #define DEL_ALL_MAC (DEL_LOCAL_MAC | DEL_REMOTE_MAC) | |
287 | #define DEL_REMOTE_MAC_FROM_VTEP 0x4 | |
288 | #define SHOW_REMOTE_MAC_FROM_VTEP 0x8 | |
289 | ||
d62a17ae | 290 | struct in_addr r_vtep_ip; /* To walk MACs from specific VTEP */ |
4122e252 | 291 | |
cd233079 | 292 | struct vty *vty; /* Used by VTY handlers */ |
d7c0a89a | 293 | uint32_t count; /* Used by VTY handlers */ |
cd233079 | 294 | struct json_object *json; /* Used for JSON Output */ |
4122e252 | 295 | }; |
296 | ||
b7cfce93 MK |
297 | struct rmac_walk_ctx { |
298 | struct vty *vty; | |
299 | struct json_object *json; | |
300 | }; | |
301 | ||
b6938a74 MK |
302 | enum zebra_neigh_state { ZEBRA_NEIGH_INACTIVE = 0, ZEBRA_NEIGH_ACTIVE = 1 }; |
303 | ||
304 | #define IS_ZEBRA_NEIGH_ACTIVE(n) n->state == ZEBRA_NEIGH_ACTIVE | |
305 | ||
306 | #define IS_ZEBRA_NEIGH_INACTIVE(n) n->state == ZEBRA_NEIGH_INACTIVE | |
307 | ||
308 | #define ZEBRA_NEIGH_SET_ACTIVE(n) n->state = ZEBRA_NEIGH_ACTIVE | |
309 | ||
310 | #define ZEBRA_NEIGH_SET_INACTIVE(n) n->state = ZEBRA_NEIGH_INACTIVE | |
311 | ||
4122e252 | 312 | /* |
313 | * Neighbor hash table. | |
314 | * | |
315 | * This table contains the neighbors (IP to MAC bindings) pertaining to | |
316 | * this VNI. This includes local neighbors learnt on the attached VLAN | |
317 | * device that maps to this VNI as well as remote neighbors learnt and | |
318 | * installed by BGP. | |
319 | * Local neighbors will be known against the VLAN device (SVI); however, | |
320 | * it is sufficient for zebra to maintain against the VNI. The correct | |
321 | * VNI will be obtained as zebra maintains the mapping (of VLAN to VNI). | |
322 | */ | |
d62a17ae | 323 | struct zebra_neigh_t_ { |
324 | /* IP address. */ | |
325 | struct ipaddr ip; | |
4122e252 | 326 | |
d62a17ae | 327 | /* MAC address. */ |
328 | struct ethaddr emac; | |
4122e252 | 329 | |
d62a17ae | 330 | /* Underlying interface. */ |
331 | ifindex_t ifindex; | |
4122e252 | 332 | |
d7c0a89a | 333 | uint32_t flags; |
b6938a74 MK |
334 | #define ZEBRA_NEIGH_LOCAL 0x01 |
335 | #define ZEBRA_NEIGH_REMOTE 0x02 | |
b7cfce93 | 336 | #define ZEBRA_NEIGH_REMOTE_NH 0x04 /* neigh entry for remote vtep */ |
ead40654 | 337 | #define ZEBRA_NEIGH_DEF_GW 0x08 |
68e33151 | 338 | #define ZEBRA_NEIGH_ROUTER_FLAG 0x10 |
b6938a74 MK |
339 | |
340 | enum zebra_neigh_state state; | |
4122e252 | 341 | |
d62a17ae | 342 | /* Remote VTEP IP - applicable only for remote neighbors. */ |
343 | struct in_addr r_vtep_ip; | |
b7cfce93 | 344 | |
f07e1c99 | 345 | /* |
346 | * Mobility sequence numbers associated with this entry. The rem_seq | |
347 | * represents the sequence number from the client (BGP) for the most | |
348 | * recent add or update of this entry while the loc_seq represents | |
349 | * the sequence number informed (or to be informed) by zebra to BGP | |
350 | * for this entry. | |
351 | */ | |
352 | uint32_t rem_seq; | |
353 | uint32_t loc_seq; | |
354 | ||
6134fd82 | 355 | /* list of hosts pointing to this remote NH entry */ |
85442b09 | 356 | struct host_rb_tree_entry host_rb; |
4122e252 | 357 | }; |
358 | ||
359 | /* | |
360 | * Context for neighbor hash walk - used by callbacks. | |
361 | */ | |
d62a17ae | 362 | struct neigh_walk_ctx { |
363 | zebra_vni_t *zvni; /* VNI hash */ | |
364 | struct zebra_vrf *zvrf; /* VRF - for client notification. */ | |
365 | int uninstall; /* uninstall from kernel? */ | |
366 | int upd_client; /* uninstall from client? */ | |
367 | ||
d7c0a89a | 368 | uint32_t flags; |
4122e252 | 369 | #define DEL_LOCAL_NEIGH 0x1 |
370 | #define DEL_REMOTE_NEIGH 0x2 | |
371 | #define DEL_ALL_NEIGH (DEL_LOCAL_NEIGH | DEL_REMOTE_NEIGH) | |
372 | #define DEL_REMOTE_NEIGH_FROM_VTEP 0x4 | |
373 | #define SHOW_REMOTE_NEIGH_FROM_VTEP 0x8 | |
374 | ||
d62a17ae | 375 | struct in_addr r_vtep_ip; /* To walk neighbors from specific VTEP */ |
4122e252 | 376 | |
cd233079 | 377 | struct vty *vty; /* Used by VTY handlers */ |
d7c0a89a QY |
378 | uint32_t count; /* Used by VTY handlers */ |
379 | uint8_t addr_width; /* Used by VTY handlers */ | |
cd233079 | 380 | struct json_object *json; /* Used for JSON Output */ |
18a7a601 | 381 | }; |
382 | ||
b7cfce93 MK |
383 | /* context for neigh hash walk - update l3vni and rmac */ |
384 | struct neigh_l3info_walk_ctx { | |
385 | ||
386 | zebra_vni_t *zvni; | |
387 | zebra_l3vni_t *zl3vni; | |
388 | int add; | |
389 | }; | |
390 | ||
391 | struct nh_walk_ctx { | |
392 | ||
393 | struct vty *vty; | |
394 | struct json_object *json; | |
395 | }; | |
396 | ||
18a7a601 | 397 | #endif /* _ZEBRA_VXLAN_PRIVATE_H */ |