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git.proxmox.com Git - mirror_frr.git/blob - zebra/zebra_snmp.c
2 * Copyright (C) 1999 Kunihiro Ishiguro
4 * This file is part of GNU Zebra.
6 * GNU Zebra is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the
8 * Free Software Foundation; either version 2, or (at your option) any
11 * GNU Zebra is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with GNU Zebra; see the file COPYING. If not, write to the Free
18 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #include <net-snmp/net-snmp-config.h>
30 #include <snmp_impl.h>
39 #include "zebra/rib.h"
40 #include "zebra/zserv.h"
42 #define IPFWMIB 1,3,6,1,2,1,4,24
43 #define ZEBRAOID 1,3,6,1,4,1,3317,1,2,1
46 #define IPFORWARDDEST 1
47 #define IPFORWARDMASK 2
48 #define IPFORWARDPOLICY 3
49 #define IPFORWARDNEXTHOP 4
50 #define IPFORWARDIFINDEX 5
51 #define IPFORWARDTYPE 6
52 #define IPFORWARDPROTO 7
53 #define IPFORWARDAGE 8
54 #define IPFORWARDINFO 9
55 #define IPFORWARDNEXTHOPAS 10
56 #define IPFORWARDMETRIC1 11
57 #define IPFORWARDMETRIC2 12
58 #define IPFORWARDMETRIC3 13
59 #define IPFORWARDMETRIC4 14
60 #define IPFORWARDMETRIC5 15
62 /* ipCidrRouteTable */
63 #define IPCIDRROUTEDEST 1
64 #define IPCIDRROUTEMASK 2
65 #define IPCIDRROUTETOS 3
66 #define IPCIDRROUTENEXTHOP 4
67 #define IPCIDRROUTEIFINDEX 5
68 #define IPCIDRROUTETYPE 6
69 #define IPCIDRROUTEPROTO 7
70 #define IPCIDRROUTEAGE 8
71 #define IPCIDRROUTEINFO 9
72 #define IPCIDRROUTENEXTHOPAS 10
73 #define IPCIDRROUTEMETRIC1 11
74 #define IPCIDRROUTEMETRIC2 12
75 #define IPCIDRROUTEMETRIC3 13
76 #define IPCIDRROUTEMETRIC4 14
77 #define IPCIDRROUTEMETRIC5 15
78 #define IPCIDRROUTESTATUS 16
80 #define INTEGER32 ASN_INTEGER
81 #define GAUGE32 ASN_GAUGE
82 #define ENUMERATION ASN_INTEGER
83 #define ROWSTATUS ASN_INTEGER
84 #define IPADDRESS ASN_IPADDRESS
85 #define OBJECTIDENTIFIER ASN_OBJECT_ID
87 extern struct zebra_t zebrad
;
89 oid ipfw_oid
[] = { IPFWMIB
};
90 oid zebra_oid
[] = { ZEBRAOID
};
93 u_char
* ipFwNumber ();
94 u_char
* ipFwTable ();
95 u_char
* ipCidrNumber ();
96 u_char
* ipCidrTable ();
98 struct variable zebra_variables
[] =
100 {0, GAUGE32
, RONLY
, ipFwNumber
, 1, {1}},
101 {IPFORWARDDEST
, IPADDRESS
, RONLY
, ipFwTable
, 3, {2, 1, 1}},
102 {IPFORWARDMASK
, IPADDRESS
, RONLY
, ipFwTable
, 3, {2, 1, 2}},
103 {IPFORWARDPOLICY
, INTEGER32
, RONLY
, ipFwTable
, 3, {2, 1, 3}},
104 {IPFORWARDNEXTHOP
, IPADDRESS
, RONLY
, ipFwTable
, 3, {2, 1, 4}},
105 {IPFORWARDIFINDEX
, INTEGER32
, RONLY
, ipFwTable
, 3, {2, 1, 5}},
106 {IPFORWARDTYPE
, ENUMERATION
, RONLY
, ipFwTable
, 3, {2, 1, 6}},
107 {IPFORWARDPROTO
, ENUMERATION
, RONLY
, ipFwTable
, 3, {2, 1, 7}},
108 {IPFORWARDAGE
, INTEGER32
, RONLY
, ipFwTable
, 3, {2, 1, 8}},
109 {IPFORWARDINFO
, OBJECTIDENTIFIER
, RONLY
, ipFwTable
, 3, {2, 1, 9}},
110 {IPFORWARDNEXTHOPAS
, INTEGER32
, RONLY
, ipFwTable
, 3, {2, 1, 10}},
111 {IPFORWARDMETRIC1
, INTEGER32
, RONLY
, ipFwTable
, 3, {2, 1, 11}},
112 {IPFORWARDMETRIC2
, INTEGER32
, RONLY
, ipFwTable
, 3, {2, 1, 12}},
113 {IPFORWARDMETRIC3
, INTEGER32
, RONLY
, ipFwTable
, 3, {2, 1, 13}},
114 {IPFORWARDMETRIC4
, INTEGER32
, RONLY
, ipFwTable
, 3, {2, 1, 14}},
115 {IPFORWARDMETRIC5
, INTEGER32
, RONLY
, ipFwTable
, 3, {2, 1, 15}},
116 {0, GAUGE32
, RONLY
, ipCidrNumber
, 1, {3}},
117 {IPCIDRROUTEDEST
, IPADDRESS
, RONLY
, ipCidrTable
, 3, {4, 1, 1}},
118 {IPCIDRROUTEMASK
, IPADDRESS
, RONLY
, ipCidrTable
, 3, {4, 1, 2}},
119 {IPCIDRROUTETOS
, INTEGER32
, RONLY
, ipCidrTable
, 3, {4, 1, 3}},
120 {IPCIDRROUTENEXTHOP
, IPADDRESS
, RONLY
, ipCidrTable
, 3, {4, 1, 4}},
121 {IPCIDRROUTEIFINDEX
, INTEGER32
, RONLY
, ipCidrTable
, 3, {4, 1, 5}},
122 {IPCIDRROUTETYPE
, ENUMERATION
, RONLY
, ipCidrTable
, 3, {4, 1, 6}},
123 {IPCIDRROUTEPROTO
, ENUMERATION
, RONLY
, ipCidrTable
, 3, {4, 1, 7}},
124 {IPCIDRROUTEAGE
, INTEGER32
, RONLY
, ipCidrTable
, 3, {4, 1, 8}},
125 {IPCIDRROUTEINFO
, OBJECTIDENTIFIER
, RONLY
, ipCidrTable
, 3, {4, 1, 9}},
126 {IPCIDRROUTENEXTHOPAS
, INTEGER32
, RONLY
, ipCidrTable
, 3, {4, 1, 10}},
127 {IPCIDRROUTEMETRIC1
, INTEGER32
, RONLY
, ipCidrTable
, 3, {4, 1, 11}},
128 {IPCIDRROUTEMETRIC2
, INTEGER32
, RONLY
, ipCidrTable
, 3, {4, 1, 12}},
129 {IPCIDRROUTEMETRIC3
, INTEGER32
, RONLY
, ipCidrTable
, 3, {4, 1, 13}},
130 {IPCIDRROUTEMETRIC4
, INTEGER32
, RONLY
, ipCidrTable
, 3, {4, 1, 14}},
131 {IPCIDRROUTEMETRIC5
, INTEGER32
, RONLY
, ipCidrTable
, 3, {4, 1, 15}},
132 {IPCIDRROUTESTATUS
, ROWSTATUS
, RONLY
, ipCidrTable
, 3, {4, 1, 16}}
137 ipFwNumber (struct variable
*v
, oid objid
[], size_t *objid_len
,
138 int exact
, size_t *val_len
, WriteMethod
**write_method
)
141 struct route_table
*table
;
142 struct route_node
*rn
;
145 if (smux_header_generic(v
, objid
, objid_len
, exact
, val_len
, write_method
) == MATCH_FAILED
)
148 table
= vrf_table (AFI_IP
, SAFI_UNICAST
, 0);
152 /* Return number of routing entries. */
154 for (rn
= route_top (table
); rn
; rn
= route_next (rn
))
155 for (rib
= rn
->info
; rib
; rib
= rib
->next
)
158 return (u_char
*)&result
;
162 ipCidrNumber (struct variable
*v
, oid objid
[], size_t *objid_len
,
163 int exact
, size_t *val_len
, WriteMethod
**write_method
)
166 struct route_table
*table
;
167 struct route_node
*rn
;
170 if (smux_header_generic(v
, objid
, objid_len
, exact
, val_len
, write_method
) == MATCH_FAILED
)
173 table
= vrf_table (AFI_IP
, SAFI_UNICAST
, 0);
177 /* Return number of routing entries. */
179 for (rn
= route_top (table
); rn
; rn
= route_next (rn
))
180 for (rib
= rn
->info
; rib
; rib
= rib
->next
)
183 return (u_char
*)&result
;
187 in_addr_cmp(u_char
*p1
, u_char
*p2
)
203 in_addr_add(u_char
*p
, int num
)
209 for (i
= 3; 0 <= i
; i
--) {
211 if (*p
+ num
> 255) {
220 /* ip + num > 0xffffffff */
227 int proto_trans(int type
)
231 case ZEBRA_ROUTE_SYSTEM
:
232 return 1; /* other */
233 case ZEBRA_ROUTE_KERNEL
:
234 return 1; /* other */
235 case ZEBRA_ROUTE_CONNECT
:
236 return 2; /* local interface */
237 case ZEBRA_ROUTE_STATIC
:
238 return 3; /* static route */
239 case ZEBRA_ROUTE_RIP
:
241 case ZEBRA_ROUTE_RIPNG
:
242 return 1; /* shouldn't happen */
243 case ZEBRA_ROUTE_OSPF
:
244 return 13; /* ospf */
245 case ZEBRA_ROUTE_OSPF6
:
246 return 1; /* shouldn't happen */
247 case ZEBRA_ROUTE_BGP
:
250 return 1; /* other */
255 check_replace(struct route_node
*np2
, struct rib
*rib2
,
256 struct route_node
**np
, struct rib
**rib
)
267 if (in_addr_cmp(&(*np
)->p
.u
.prefix
, &np2
->p
.u
.prefix
) < 0)
269 if (in_addr_cmp(&(*np
)->p
.u
.prefix
, &np2
->p
.u
.prefix
) > 0)
276 proto
= proto_trans((*rib
)->type
);
277 proto2
= proto_trans(rib2
->type
);
288 if (in_addr_cmp((u_char
*)&(*rib
)->nexthop
->gate
.ipv4
,
289 (u_char
*)&rib2
->nexthop
->gate
.ipv4
) <= 0)
298 get_fwtable_route_node(struct variable
*v
, oid objid
[], size_t *objid_len
,
299 int exact
, struct route_node
**np
, struct rib
**rib
)
302 struct route_table
*table
;
303 struct route_node
*np2
;
307 struct in_addr nexthop
;
311 /* Init index variables */
313 pnt
= (u_char
*) &dest
;
314 for (i
= 0; i
< 4; i
++)
317 pnt
= (u_char
*) &nexthop
;
318 for (i
= 0; i
< 4; i
++)
324 /* Init return variables */
329 /* Short circuit exact matches of wrong length */
331 if (exact
&& (*objid_len
!= v
->namelen
+ 10))
334 table
= vrf_table (AFI_IP
, SAFI_UNICAST
, 0);
338 /* Get INDEX information out of OID.
339 * ipForwardDest, ipForwardProto, ipForwardPolicy, ipForwardNextHop
342 if (*objid_len
> v
->namelen
)
343 oid2in_addr (objid
+ v
->namelen
, MIN(4, *objid_len
- v
->namelen
), &dest
);
345 if (*objid_len
> v
->namelen
+ 4)
346 proto
= objid
[v
->namelen
+ 4];
348 if (*objid_len
> v
->namelen
+ 5)
349 policy
= objid
[v
->namelen
+ 5];
351 if (*objid_len
> v
->namelen
+ 6)
352 oid2in_addr (objid
+ v
->namelen
+ 6, MIN(4, *objid_len
- v
->namelen
- 6),
355 /* Apply GETNEXT on not exact search */
357 if (!exact
&& (*objid_len
>= v
->namelen
+ 10))
359 if (! in_addr_add((u_char
*) &nexthop
, 1))
363 /* For exact: search matching entry in rib table. */
367 if (policy
) /* Not supported (yet?) */
369 for (*np
= route_top (table
); *np
; *np
= route_next (*np
))
371 if (!in_addr_cmp(&(*np
)->p
.u
.prefix
, (u_char
*)&dest
))
373 for (*rib
= (*np
)->info
; *rib
; *rib
= (*rib
)->next
)
375 if (!in_addr_cmp((u_char
*)&(*rib
)->nexthop
->gate
.ipv4
,
377 if (proto
== proto_trans((*rib
)->type
))
385 /* Search next best entry */
387 for (np2
= route_top (table
); np2
; np2
= route_next (np2
))
390 /* Check destination first */
391 if (in_addr_cmp(&np2
->p
.u
.prefix
, (u_char
*)&dest
) > 0)
392 for (rib2
= np2
->info
; rib2
; rib2
= rib2
->next
)
393 check_replace(np2
, rib2
, np
, rib
);
395 if (in_addr_cmp(&np2
->p
.u
.prefix
, (u_char
*)&dest
) == 0)
396 { /* have to look at each rib individually */
397 for (rib2
= np2
->info
; rib2
; rib2
= rib2
->next
)
401 proto2
= proto_trans(rib2
->type
);
404 if ((policy
< policy2
)
405 || ((policy
== policy2
) && (proto
< proto2
))
406 || ((policy
== policy2
) && (proto
== proto2
)
407 && (in_addr_cmp((u_char
*)&rib2
->nexthop
->gate
.ipv4
,
408 (u_char
*) &nexthop
) >= 0)
410 check_replace(np2
, rib2
, np
, rib
);
419 proto
= proto_trans((*rib
)->type
);
421 *objid_len
= v
->namelen
+ 10;
422 pnt
= (u_char
*) &(*np
)->p
.u
.prefix
;
423 for (i
= 0; i
< 4; i
++)
424 objid
[v
->namelen
+ i
] = *pnt
++;
426 objid
[v
->namelen
+ 4] = proto
;
427 objid
[v
->namelen
+ 5] = policy
;
430 struct nexthop
*nexthop
;
432 nexthop
= (*rib
)->nexthop
;
435 pnt
= (u_char
*) &nexthop
->gate
.ipv4
;
436 for (i
= 0; i
< 4; i
++)
437 objid
[i
+ v
->namelen
+ 6] = *pnt
++;
445 ipFwTable (struct variable
*v
, oid objid
[], size_t *objid_len
,
446 int exact
, size_t *val_len
, WriteMethod
**write_method
)
448 struct route_node
*np
;
451 static int resarr
[2];
452 static struct in_addr netmask
;
453 struct nexthop
*nexthop
;
455 get_fwtable_route_node(v
, objid
, objid_len
, exact
, &np
, &rib
);
459 nexthop
= rib
->nexthop
;
467 return &np
->p
.u
.prefix
;
470 masklen2ip(np
->p
.prefixlen
, &netmask
);
472 return (u_char
*)&netmask
;
474 case IPFORWARDPOLICY
:
476 *val_len
= sizeof(int);
477 return (u_char
*)&result
;
479 case IPFORWARDNEXTHOP
:
481 return (u_char
*)&nexthop
->gate
.ipv4
;
483 case IPFORWARDIFINDEX
:
484 *val_len
= sizeof(int);
485 return (u_char
*)&nexthop
->ifindex
;
488 if (nexthop
->type
== NEXTHOP_TYPE_IFINDEX
489 || nexthop
->type
== NEXTHOP_TYPE_IFNAME
)
493 *val_len
= sizeof(int);
494 return (u_char
*)&result
;
497 result
= proto_trans(rib
->type
);
498 *val_len
= sizeof(int);
499 return (u_char
*)&result
;
503 *val_len
= sizeof(int);
504 return (u_char
*)&result
;
509 *val_len
= 2 * sizeof(int);
510 return (u_char
*)resarr
;
512 case IPFORWARDNEXTHOPAS
:
514 *val_len
= sizeof(int);
515 return (u_char
*)&result
;
517 case IPFORWARDMETRIC1
:
519 *val_len
= sizeof(int);
520 return (u_char
*)&result
;
522 case IPFORWARDMETRIC2
:
524 *val_len
= sizeof(int);
525 return (u_char
*)&result
;
527 case IPFORWARDMETRIC3
:
529 *val_len
= sizeof(int);
530 return (u_char
*)&result
;
532 case IPFORWARDMETRIC4
:
534 *val_len
= sizeof(int);
535 return (u_char
*)&result
;
537 case IPFORWARDMETRIC5
:
539 *val_len
= sizeof(int);
540 return (u_char
*)&result
;
550 ipCidrTable (struct variable
*v
, oid objid
[], size_t *objid_len
,
551 int exact
, size_t *val_len
, WriteMethod
**write_method
)
555 case IPCIDRROUTEDEST
:
567 smux_init (zebrad
.master
, zebra_oid
, sizeof (zebra_oid
) / sizeof (oid
));
568 REGISTER_MIB("mibII/ipforward", zebra_variables
, variable
, ipfw_oid
);
571 #endif /* HAVE_SNMP */