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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-09 13:16:35 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-09 13:16:35 +0000
commite2bbf175a2184bd76f6c54ccf8456babeb1a46fc (patch)
treef0b76550d6e6f500ada964a3a4ee933a45e5a6f1 /bgpd/bgp_mplsvpn_snmp.c
parentInitial commit. (diff)
downloadfrr-e2bbf175a2184bd76f6c54ccf8456babeb1a46fc.tar.xz
frr-e2bbf175a2184bd76f6c54ccf8456babeb1a46fc.zip
Adding upstream version 9.1.upstream/9.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'bgpd/bgp_mplsvpn_snmp.c')
-rw-r--r--bgpd/bgp_mplsvpn_snmp.c1686
1 files changed, 1686 insertions, 0 deletions
diff --git a/bgpd/bgp_mplsvpn_snmp.c b/bgpd/bgp_mplsvpn_snmp.c
new file mode 100644
index 0000000..0208a6f
--- /dev/null
+++ b/bgpd/bgp_mplsvpn_snmp.c
@@ -0,0 +1,1686 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* MPLS/BGP L3VPN MIB
+ * Copyright (C) 2020 Volta Networks Inc
+ */
+
+#include <zebra.h>
+
+#include <net-snmp/net-snmp-config.h>
+#include <net-snmp/net-snmp-includes.h>
+
+#include "if.h"
+#include "log.h"
+#include "prefix.h"
+#include "command.h"
+#include "frrevent.h"
+#include "smux.h"
+#include "filter.h"
+#include "hook.h"
+#include "libfrr.h"
+#include "lib/version.h"
+
+#include "bgpd/bgpd.h"
+#include "bgpd/bgp_route.h"
+#include "bgpd/bgp_attr.h"
+#include "bgpd/bgp_ecommunity.h"
+#include "bgpd/bgp_mplsvpn.h"
+#include "bgpd/bgp_mplsvpn_snmp.h"
+
+#define BGP_mplsvpn_notif_enable_true 1
+#define BGP_mplsvpn_notif_enable_false 2
+
+/* MPLSL3VPN MIB described in RFC4382 */
+#define MPLSL3VPNMIB 1, 3, 6, 1, 2, 1, 10, 166, 11
+
+/* MPLSL3VPN Scalars */
+#define MPLSL3VPNCONFIGUREDVRFS 1
+#define MPLSL3VPNACTIVEVRFS 2
+#define MPLSL3VPNCONNECTEDINTERFACES 3
+#define MPLSL3VPNNOTIFICATIONENABLE 4
+#define MPLSL3VPNCONFMAXPOSSRTS 5
+#define MPLSL3VPNVRFCONFRTEMXTHRSHTIME 6
+#define MPLSL3VPNILLLBLRCVTHRSH 7
+
+/* MPLSL3VPN IFConf Table */
+#define MPLSL3VPNIFVPNCLASSIFICATION 1
+#define MPLSL3VPNIFCONFSTORAGETYPE 2
+#define MPLSL3VPNIFCONFROWSTATUS 3
+
+/* MPLSL3VPN VRF Table */
+#define MPLSL3VPNVRFVPNID 1
+#define MPLSL3VPNVRFDESC 2
+#define MPLSL3VPNVRFRD 3
+#define MPLSL3VPNVRFCREATIONTIME 4
+#define MPLSL3VPNVRFOPERSTATUS 5
+#define MPLSL3VPNVRFACTIVEINTERFACES 6
+#define MPLSL3VPNVRFASSOCIATEDINTERFACES 7
+#define MPLSL3VPNVRFCONFMIDRTETHRESH 8
+#define MPLSL3VPNVRFCONFHIGHRTETHRSH 9
+#define MPLSL3VPNVRFCONFMAXROUTES 10
+#define MPLSL3VPNVRFCONFLASTCHANGED 11
+#define MPLSL3VPNVRFCONFROWSTATUS 12
+#define MPLSL3VPNVRFCONFADMINSTATUS 13
+#define MPLSL3VPNVRFCONFSTORAGETYPE 14
+
+/* MPLSL3VPN RT Table */
+#define MPLSL3VPNVRFRT 1
+#define MPLSL3VPNVRFRTDESCR 2
+#define MPLSL3VPNVRFRTROWSTATUS 3
+#define MPLSL3VPNVRFRTSTORAGETYPE 4
+
+/* MPLSL3VPN PERF Table */
+#define MPLSL3VPNVRFPERFROUTESADDED 1
+#define MPLSL3VPNVRFPERFROUTESDELETED 2
+#define MPLSL3VPNVRFPERFCURRNUMROUTES 3
+
+/* MPLSL3VPN RTE Table */
+#define MPLSL3VPNVRFRTEINETCIDRDESTTYPE 1
+#define MPLSL3VPNVRFRTEINETCIDRDEST 2
+#define MPLSL3VPNVRFRTEINETCIDRPFXLEN 3
+#define MPLSL3VPNVRFRTEINETCIDRPOLICY 4
+#define MPLSL3VPNVRFRTEINETCIDRNHOPTYPE 5
+#define MPLSL3VPNVRFRTEINETCIDRNEXTHOP 6
+#define MPLSL3VPNVRFRTEINETCIDRIFINDEX 7
+#define MPLSL3VPNVRFRTEINETCIDRTYPE 8
+#define MPLSL3VPNVRFRTEINETCIDRPROTO 9
+#define MPLSL3VPNVRFRTEINETCIDRAGE 10
+#define MPLSL3VPNVRFRTEINETCIDRNEXTHOPAS 11
+#define MPLSL3VPNVRFRTEINETCIDRMETRIC1 12
+#define MPLSL3VPNVRFRTEINETCIDRMETRIC2 13
+#define MPLSL3VPNVRFRTEINETCIDRMETRIC3 14
+#define MPLSL3VPNVRFRTEINETCIDRMETRIC4 15
+#define MPLSL3VPNVRFRTEINETCIDRMETRIC5 16
+#define MPLSL3VPNVRFRTEINETCIDRXCPOINTER 17
+#define MPLSL3VPNVRFRTEINETCIDRSTATUS 18
+
+/* BGP Trap */
+#define MPLSL3VPNVRFUP 1
+#define MPLSL3VPNDOWN 2
+
+/* SNMP value hack. */
+#define INTEGER ASN_INTEGER
+#define INTEGER32 ASN_INTEGER
+#define COUNTER32 ASN_COUNTER
+#define OCTET_STRING ASN_OCTET_STR
+#define IPADDRESS ASN_IPADDRESS
+#define GAUGE32 ASN_UNSIGNED
+#define TIMETICKS ASN_TIMETICKS
+#define OID ASN_OBJECT_ID
+
+/* Declare static local variables for convenience. */
+SNMP_LOCAL_VARIABLES
+
+#define RT_PREAMBLE_SIZE 20
+
+/* BGP-MPLS-MIB instances */
+static oid mpls_l3vpn_oid[] = {MPLSL3VPNMIB};
+static oid mpls_l3vpn_trap_oid[] = {MPLSL3VPNMIB, 0};
+static char rd_buf[RD_ADDRSTRLEN];
+/* Notifications enabled by default */
+static uint8_t bgp_mplsvpn_notif_enable = SNMP_TRUE;
+static oid mpls_l3vpn_policy_oid[2] = {0, 0};
+static const char *empty_nhop = "";
+char rt_description[VRF_NAMSIZ + RT_PREAMBLE_SIZE];
+
+static uint8_t *mplsL3vpnConfiguredVrfs(struct variable *, oid[], size_t *, int,
+ size_t *, WriteMethod **);
+
+static uint8_t *mplsL3vpnActiveVrfs(struct variable *, oid[], size_t *, int,
+ size_t *, WriteMethod **);
+
+static uint8_t *mplsL3vpnConnectedInterfaces(struct variable *, oid[], size_t *,
+ int, size_t *, WriteMethod **);
+
+static uint8_t *mplsL3vpnNotificationEnable(struct variable *, oid[], size_t *,
+ int, size_t *, WriteMethod **);
+
+static uint8_t *mplsL3vpnVrfConfMaxPossRts(struct variable *, oid[], size_t *,
+ int, size_t *, WriteMethod **);
+
+static uint8_t *mplsL3vpnVrfConfRteMxThrshTime(struct variable *, oid[],
+ size_t *, int, size_t *,
+ WriteMethod **);
+
+static uint8_t *mplsL3vpnIllLblRcvThrsh(struct variable *, oid[], size_t *, int,
+ size_t *, WriteMethod **);
+
+static uint8_t *mplsL3vpnVrfTable(struct variable *, oid[], size_t *, int,
+ size_t *, WriteMethod **);
+
+static uint8_t *mplsL3vpnVrfRtTable(struct variable *, oid[], size_t *, int,
+ size_t *, WriteMethod **);
+
+static uint8_t *mplsL3vpnIfConfTable(struct variable *, oid[], size_t *, int,
+ size_t *, WriteMethod **);
+
+static uint8_t *mplsL3vpnPerfTable(struct variable *, oid[], size_t *, int,
+ size_t *, WriteMethod **);
+
+static uint8_t *mplsL3vpnRteTable(struct variable *, oid[], size_t *, int,
+ size_t *, WriteMethod **);
+
+
+static struct variable mpls_l3vpn_variables[] = {
+ /* BGP version. */
+ {MPLSL3VPNCONFIGUREDVRFS,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnConfiguredVrfs,
+ 3,
+ {1, 1, 1} },
+ {MPLSL3VPNACTIVEVRFS,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnActiveVrfs,
+ 3,
+ {1, 1, 2} },
+ {MPLSL3VPNCONNECTEDINTERFACES,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnConnectedInterfaces,
+ 3,
+ {1, 1, 3} },
+ {MPLSL3VPNNOTIFICATIONENABLE,
+ INTEGER,
+ RWRITE,
+ mplsL3vpnNotificationEnable,
+ 3,
+ {1, 1, 4} },
+ {MPLSL3VPNCONFMAXPOSSRTS,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnVrfConfMaxPossRts,
+ 3,
+ {1, 1, 5} },
+ {MPLSL3VPNVRFCONFRTEMXTHRSHTIME,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnVrfConfRteMxThrshTime,
+ 3,
+ {1, 1, 6} },
+ {MPLSL3VPNILLLBLRCVTHRSH,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnIllLblRcvThrsh,
+ 3,
+ {1, 1, 7} },
+
+ /* Ifconf Table */
+ {MPLSL3VPNIFVPNCLASSIFICATION,
+ INTEGER,
+ RONLY,
+ mplsL3vpnIfConfTable,
+ 5,
+ {1, 2, 1, 1, 2} },
+ {MPLSL3VPNIFCONFSTORAGETYPE,
+ INTEGER,
+ RONLY,
+ mplsL3vpnIfConfTable,
+ 5,
+ {1, 2, 1, 1, 4} },
+ {MPLSL3VPNIFCONFROWSTATUS,
+ INTEGER,
+ RONLY,
+ mplsL3vpnIfConfTable,
+ 5,
+ {1, 2, 1, 1, 5} },
+
+ /* mplsL3VpnVrf Table */
+ {MPLSL3VPNVRFVPNID,
+ OCTET_STRING,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 2} },
+ {MPLSL3VPNVRFDESC,
+ OCTET_STRING,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 3} },
+ {MPLSL3VPNVRFRD,
+ OCTET_STRING,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 4} },
+ {MPLSL3VPNVRFCREATIONTIME,
+ TIMETICKS,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 5} },
+ {MPLSL3VPNVRFOPERSTATUS,
+ INTEGER,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 6} },
+ {MPLSL3VPNVRFACTIVEINTERFACES,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 7} },
+ {MPLSL3VPNVRFASSOCIATEDINTERFACES,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 8} },
+ {MPLSL3VPNVRFCONFMIDRTETHRESH,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 9} },
+ {MPLSL3VPNVRFCONFHIGHRTETHRSH,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 10} },
+ {MPLSL3VPNVRFCONFMAXROUTES,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 11} },
+ {MPLSL3VPNVRFCONFLASTCHANGED,
+ TIMETICKS,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 12} },
+ {MPLSL3VPNVRFCONFROWSTATUS,
+ INTEGER,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 13} },
+ {MPLSL3VPNVRFCONFADMINSTATUS,
+ INTEGER,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 14} },
+ {MPLSL3VPNVRFCONFSTORAGETYPE,
+ INTEGER,
+ RONLY,
+ mplsL3vpnVrfTable,
+ 5,
+ {1, 2, 2, 1, 15} },
+
+ /* mplsL3vpnVrfRt Table */
+ {MPLSL3VPNVRFRT,
+ OCTET_STRING,
+ RONLY,
+ mplsL3vpnVrfRtTable,
+ 5,
+ {1, 2, 3, 1, 4} },
+ {MPLSL3VPNVRFRTDESCR,
+ OCTET_STRING,
+ RONLY,
+ mplsL3vpnVrfRtTable,
+ 5,
+ {1, 2, 3, 1, 5} },
+ {MPLSL3VPNVRFRTROWSTATUS,
+ INTEGER,
+ RONLY,
+ mplsL3vpnVrfRtTable,
+ 5,
+ {1, 2, 3, 1, 6} },
+ {MPLSL3VPNVRFRTSTORAGETYPE,
+ INTEGER,
+ RONLY,
+ mplsL3vpnVrfRtTable,
+ 5,
+ {1, 2, 3, 1, 7} },
+
+ /* mplsL3VpnPerfTable */
+ {MPLSL3VPNVRFPERFROUTESADDED,
+ COUNTER32,
+ RONLY,
+ mplsL3vpnPerfTable,
+ 5,
+ {1, 3, 1, 1, 1} },
+ {MPLSL3VPNVRFPERFROUTESDELETED,
+ COUNTER32,
+ RONLY,
+ mplsL3vpnPerfTable,
+ 5,
+ {1, 3, 1, 1, 2} },
+ {MPLSL3VPNVRFPERFCURRNUMROUTES,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnPerfTable,
+ 5,
+ {1, 3, 1, 1, 3} },
+
+ /* mplsVpnRteTable */
+ {MPLSL3VPNVRFRTEINETCIDRDESTTYPE,
+ INTEGER,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 1} },
+ {MPLSL3VPNVRFRTEINETCIDRDEST,
+ OCTET_STRING,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 2} },
+ {MPLSL3VPNVRFRTEINETCIDRPFXLEN,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 3} },
+ {MPLSL3VPNVRFRTEINETCIDRPOLICY,
+ OID,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 4} },
+ {MPLSL3VPNVRFRTEINETCIDRNHOPTYPE,
+ INTEGER,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 5} },
+ {MPLSL3VPNVRFRTEINETCIDRNEXTHOP,
+ OCTET_STRING,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 6} },
+ {MPLSL3VPNVRFRTEINETCIDRIFINDEX,
+ INTEGER,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 7} },
+ {MPLSL3VPNVRFRTEINETCIDRTYPE,
+ INTEGER,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 8} },
+ {MPLSL3VPNVRFRTEINETCIDRPROTO,
+ INTEGER,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 9} },
+ {MPLSL3VPNVRFRTEINETCIDRAGE,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 10} },
+ {MPLSL3VPNVRFRTEINETCIDRNEXTHOPAS,
+ GAUGE32,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 11} },
+ {MPLSL3VPNVRFRTEINETCIDRMETRIC1,
+ INTEGER,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 12} },
+ {MPLSL3VPNVRFRTEINETCIDRMETRIC2,
+ INTEGER,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 13} },
+ {MPLSL3VPNVRFRTEINETCIDRMETRIC3,
+ INTEGER,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 14} },
+ {MPLSL3VPNVRFRTEINETCIDRMETRIC4,
+ INTEGER,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 15} },
+ {MPLSL3VPNVRFRTEINETCIDRMETRIC5,
+ INTEGER,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 16} },
+ {MPLSL3VPNVRFRTEINETCIDRXCPOINTER,
+ OCTET_STRING,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 17} },
+ {MPLSL3VPNVRFRTEINETCIDRSTATUS,
+ INTEGER,
+ RONLY,
+ mplsL3vpnRteTable,
+ 5,
+ {1, 4, 1, 1, 18} },
+};
+
+/* timeticks are in hundredths of a second */
+static void bgp_mpls_l3vpn_update_timeticks(time_t *counter)
+{
+ struct timeval tv;
+
+ monotime(&tv);
+ *counter = (tv.tv_sec * 100) + (tv.tv_usec / 10000);
+}
+
+static int bgp_mpls_l3vpn_update_last_changed(struct bgp *bgp)
+{
+ if (bgp->snmp_stats)
+ bgp_mpls_l3vpn_update_timeticks(
+ &(bgp->snmp_stats->modify_time));
+ return 0;
+}
+
+static uint32_t bgp_mpls_l3vpn_current_routes(struct bgp *l3vpn_bgp)
+{
+ uint32_t count = 0;
+ struct bgp_table *table;
+ struct bgp_dest *dest;
+ struct bgp_path_info *pi;
+
+ table = l3vpn_bgp->rib[AFI_IP][SAFI_UNICAST];
+ for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) {
+ pi = bgp_dest_get_bgp_path_info(dest);
+ for (; pi; pi = pi->next)
+ count++;
+ }
+ table = l3vpn_bgp->rib[AFI_IP6][SAFI_UNICAST];
+ for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) {
+ pi = bgp_dest_get_bgp_path_info(dest);
+ for (; pi; pi = pi->next)
+ count++;
+ }
+ return count;
+}
+
+static int bgp_init_snmp_stats(struct bgp *bgp)
+{
+ if (is_bgp_vrf_mplsvpn(bgp)) {
+ if (bgp->snmp_stats == NULL) {
+ bgp->snmp_stats = XCALLOC(
+ MTYPE_BGP, sizeof(struct bgp_snmp_stats));
+ /* fix up added routes */
+ if (bgp->snmp_stats) {
+ bgp->snmp_stats->routes_added =
+ bgp_mpls_l3vpn_current_routes(bgp);
+ bgp_mpls_l3vpn_update_timeticks(
+ &(bgp->snmp_stats->creation_time));
+ }
+ }
+ } else {
+ if (bgp->snmp_stats) {
+ XFREE(MTYPE_BGP, bgp->snmp_stats);
+ bgp->snmp_stats = NULL;
+ }
+ }
+ /* Something changed - update the timestamp */
+ bgp_mpls_l3vpn_update_last_changed(bgp);
+ return 0;
+}
+
+static int bgp_snmp_update_route_stats(struct bgp_dest *dest,
+ struct bgp_path_info *pi, bool added)
+{
+ struct bgp_table *table;
+
+ if (dest) {
+ table = bgp_dest_table(dest);
+ /* only update if we have a stats block - MPLSVPN vrfs for now*/
+ if (table && table->bgp && table->bgp->snmp_stats) {
+ if (added)
+ table->bgp->snmp_stats->routes_added++;
+ else
+ table->bgp->snmp_stats->routes_deleted++;
+ }
+ }
+ return 0;
+}
+
+static bool is_bgp_vrf_active(struct bgp *bgp)
+{
+ struct vrf *vrf;
+ struct interface *ifp;
+
+ /* if there is one interface in the vrf which is up then it is deemed
+ * active
+ */
+ vrf = vrf_lookup_by_id(bgp->vrf_id);
+ if (vrf == NULL)
+ return false;
+ RB_FOREACH (ifp, if_name_head, &vrf->ifaces_by_name) {
+ /* if we are in a vrf skip the l3mdev */
+ if (bgp->name && strncmp(ifp->name, bgp->name, VRF_NAMSIZ) == 0)
+ continue;
+
+ if (if_is_up(ifp))
+ return true;
+ }
+ return false;
+}
+
+/* BGP Traps. */
+static struct trap_object l3vpn_trap_list[] = {{5, {1, 2, 1, 1, 5} },
+ {5, {1, 2, 2, 1, 6} } };
+
+static int bgp_vrf_check_update_active(struct bgp *bgp, struct interface *ifp)
+{
+ bool new_active = false;
+ oid trap;
+ struct index_oid trap_index[2];
+
+ if (!is_bgp_vrf_mplsvpn(bgp) || bgp->snmp_stats == NULL
+ || !bgp_mplsvpn_notif_enable)
+ return 0;
+ new_active = is_bgp_vrf_active(bgp);
+ if (bgp->snmp_stats->active != new_active) {
+ /* add trap in here */
+ bgp->snmp_stats->active = new_active;
+
+ /* send relevent trap */
+ if (bgp->snmp_stats->active)
+ trap = MPLSL3VPNVRFUP;
+ else
+ trap = MPLSL3VPNDOWN;
+
+ /*
+ * first index vrf_name + ifindex
+ * second index vrf_name
+ */
+ trap_index[1].indexlen = strnlen(bgp->name, VRF_NAMSIZ);
+ oid_copy_str(trap_index[0].indexname, bgp->name,
+ trap_index[1].indexlen);
+ oid_copy_str(trap_index[1].indexname, bgp->name,
+ trap_index[1].indexlen);
+ trap_index[0].indexlen =
+ trap_index[1].indexlen + sizeof(ifindex_t);
+ oid_copy_int(trap_index[0].indexname + trap_index[1].indexlen,
+ (int *)&(ifp->ifindex));
+
+ smux_trap_multi_index(
+ mpls_l3vpn_variables, array_size(mpls_l3vpn_variables),
+ mpls_l3vpn_trap_oid, array_size(mpls_l3vpn_trap_oid),
+ mpls_l3vpn_oid, sizeof(mpls_l3vpn_oid) / sizeof(oid),
+ trap_index, array_size(trap_index), l3vpn_trap_list,
+ array_size(l3vpn_trap_list), trap);
+ }
+ bgp_mpls_l3vpn_update_last_changed(bgp);
+ return 0;
+}
+
+static uint8_t *mplsL3vpnConfiguredVrfs(struct variable *v, oid name[],
+ size_t *length, int exact,
+ size_t *var_len,
+ WriteMethod **write_method)
+{
+ struct listnode *node, *nnode;
+ struct bgp *bgp;
+ uint32_t count = 0;
+
+ if (smux_header_generic(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) {
+ if (is_bgp_vrf_mplsvpn(bgp))
+ count++;
+ }
+ return SNMP_INTEGER(count);
+}
+
+static uint8_t *mplsL3vpnActiveVrfs(struct variable *v, oid name[],
+ size_t *length, int exact, size_t *var_len,
+ WriteMethod **write_method)
+{
+ struct listnode *node, *nnode;
+ struct bgp *bgp;
+ uint32_t count = 0;
+
+ if (smux_header_generic(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) {
+ if (is_bgp_vrf_mplsvpn(bgp) && is_bgp_vrf_active(bgp))
+ count++;
+ }
+ return SNMP_INTEGER(count);
+}
+
+static uint8_t *mplsL3vpnConnectedInterfaces(struct variable *v, oid name[],
+ size_t *length, int exact,
+ size_t *var_len,
+ WriteMethod **write_method)
+{
+ struct listnode *node, *nnode;
+ struct bgp *bgp;
+ uint32_t count = 0;
+ struct vrf *vrf;
+
+ if (smux_header_generic(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) {
+ if (is_bgp_vrf_mplsvpn(bgp)) {
+ vrf = vrf_lookup_by_name(bgp->name);
+ if (vrf == NULL)
+ continue;
+
+ count += vrf_interface_count(vrf);
+ }
+ }
+
+ return SNMP_INTEGER(count);
+}
+
+static int write_mplsL3vpnNotificationEnable(int action, uint8_t *var_val,
+ uint8_t var_val_type,
+ size_t var_val_len, uint8_t *statP,
+ oid *name, size_t length)
+{
+ uint32_t intval;
+
+ if (var_val_type != ASN_INTEGER)
+ return SNMP_ERR_WRONGTYPE;
+
+ if (var_val_len != sizeof(long))
+ return SNMP_ERR_WRONGLENGTH;
+
+ intval = *(long *)var_val;
+ bgp_mplsvpn_notif_enable = intval;
+ return SNMP_ERR_NOERROR;
+}
+
+static uint8_t *mplsL3vpnNotificationEnable(struct variable *v, oid name[],
+ size_t *length, int exact,
+ size_t *var_len,
+ WriteMethod **write_method)
+{
+ if (smux_header_generic(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ *write_method = write_mplsL3vpnNotificationEnable;
+ return SNMP_INTEGER(bgp_mplsvpn_notif_enable);
+}
+
+static uint8_t *mplsL3vpnVrfConfMaxPossRts(struct variable *v, oid name[],
+ size_t *length, int exact,
+ size_t *var_len,
+ WriteMethod **write_method)
+{
+ if (smux_header_generic(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ return SNMP_INTEGER(0);
+}
+
+static uint8_t *mplsL3vpnVrfConfRteMxThrshTime(struct variable *v, oid name[],
+ size_t *length, int exact,
+ size_t *var_len,
+ WriteMethod **write_method)
+{
+ if (smux_header_generic(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ return SNMP_INTEGER(0);
+}
+
+static uint8_t *mplsL3vpnIllLblRcvThrsh(struct variable *v, oid name[],
+ size_t *length, int exact,
+ size_t *var_len,
+ WriteMethod **write_method)
+{
+ if (smux_header_generic(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ return SNMP_INTEGER(0);
+}
+
+
+static struct bgp *bgp_lookup_by_name_next(char *vrf_name)
+{
+ struct bgp *bgp, *bgp_next = NULL;
+ struct listnode *node, *nnode;
+ bool first = false;
+
+ /*
+ * the vrfs are not stored alphabetically but since we are using the
+ * vrf name as an index we need the getnext function to return them
+ * in a atrict order. Thus run through and find the best next one.
+ */
+ for (ALL_LIST_ELEMENTS(bm->bgp, node, nnode, bgp)) {
+ if (!is_bgp_vrf_mplsvpn(bgp))
+ continue;
+ if (strnlen(vrf_name, VRF_NAMSIZ) == 0 && bgp_next == NULL) {
+ first = true;
+ bgp_next = bgp;
+ continue;
+ }
+ if (first || strncmp(bgp->name, vrf_name, VRF_NAMSIZ) > 0) {
+ if (bgp_next == NULL)
+ bgp_next = bgp;
+ else if (strncmp(bgp->name, bgp_next->name, VRF_NAMSIZ)
+ < 0)
+ bgp_next = bgp;
+ }
+ }
+ return bgp_next;
+}
+
+/* 1.3.6.1.2.1.10.166.11.1.2.1.1.x = 14*/
+#define IFCONFTAB_NAMELEN 14
+static struct bgp *bgpL3vpnIfConf_lookup(struct variable *v, oid name[],
+ size_t *length, char *vrf_name,
+ ifindex_t *ifindex, int exact)
+{
+ struct bgp *bgp = NULL;
+ size_t namelen = v ? v->namelen : IFCONFTAB_NAMELEN;
+ struct interface *ifp;
+ int vrf_name_len, len;
+
+ /* too long ? */
+ if (*length - namelen > (VRF_NAMSIZ + sizeof(uint32_t)))
+ return NULL;
+ /* do we have index info in the oid ? */
+ if (*length - namelen != 0 && *length - namelen >= sizeof(uint32_t)) {
+ /* copy the info from the oid */
+ vrf_name_len = *length - (namelen + sizeof(ifindex_t));
+ oid2string(name + namelen, vrf_name_len, vrf_name);
+ oid2int(name + namelen + vrf_name_len, ifindex);
+ }
+
+ if (exact) {
+ /* Check the length. */
+ bgp = bgp_lookup_by_name(vrf_name);
+ if (bgp && !is_bgp_vrf_mplsvpn(bgp))
+ return NULL;
+ if (!bgp)
+ return NULL;
+ ifp = if_lookup_by_index(*ifindex, bgp->vrf_id);
+ if (!ifp)
+ return NULL;
+ } else {
+ if (strnlen(vrf_name, VRF_NAMSIZ) == 0)
+ bgp = bgp_lookup_by_name_next(vrf_name);
+ else
+ bgp = bgp_lookup_by_name(vrf_name);
+
+ while (bgp) {
+ ifp = if_vrf_lookup_by_index_next(*ifindex,
+ bgp->vrf_id);
+ if (ifp) {
+ vrf_name_len = strnlen(bgp->name, VRF_NAMSIZ);
+ *ifindex = ifp->ifindex;
+ len = vrf_name_len + sizeof(ifindex_t);
+ oid_copy_str(name + namelen, bgp->name,
+ vrf_name_len);
+ oid_copy_int(name + namelen + vrf_name_len,
+ ifindex);
+ *length = len + namelen;
+
+ return bgp;
+ }
+ *ifindex = 0;
+ bgp = bgp_lookup_by_name_next(bgp->name);
+ }
+
+ return NULL;
+ }
+ return bgp;
+}
+
+static uint8_t *mplsL3vpnIfConfTable(struct variable *v, oid name[],
+ size_t *length, int exact, size_t *var_len,
+ WriteMethod **write_method)
+{
+ char vrf_name[VRF_NAMSIZ];
+ ifindex_t ifindex = 0;
+ struct bgp *l3vpn_bgp;
+
+ if (smux_header_table(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ memset(vrf_name, 0, VRF_NAMSIZ);
+ l3vpn_bgp = bgpL3vpnIfConf_lookup(v, name, length, vrf_name, &ifindex,
+ exact);
+ if (!l3vpn_bgp)
+ return NULL;
+
+ switch (v->magic) {
+ case MPLSL3VPNIFVPNCLASSIFICATION:
+ return SNMP_INTEGER(2);
+ case MPLSL3VPNIFCONFSTORAGETYPE:
+ return SNMP_INTEGER(2);
+ case MPLSL3VPNIFCONFROWSTATUS:
+ return SNMP_INTEGER(1);
+ }
+ return NULL;
+}
+
+/* 1.3.6.1.2.1.10.166.11.1.2.2.1.x = 14*/
+#define VRFTAB_NAMELEN 14
+
+static struct bgp *bgpL3vpnVrf_lookup(struct variable *v, oid name[],
+ size_t *length, char *vrf_name, int exact)
+{
+ struct bgp *bgp = NULL;
+ size_t namelen = v ? v->namelen : VRFTAB_NAMELEN;
+ int len;
+
+ if (*length - namelen > VRF_NAMSIZ)
+ return NULL;
+ oid2string(name + namelen, *length - namelen, vrf_name);
+ if (exact) {
+ /* Check the length. */
+ bgp = bgp_lookup_by_name(vrf_name);
+ if (bgp && !is_bgp_vrf_mplsvpn(bgp))
+ return NULL;
+ } else {
+ bgp = bgp_lookup_by_name_next(vrf_name);
+
+ if (bgp == NULL)
+ return NULL;
+
+ len = strnlen(bgp->name, VRF_NAMSIZ);
+ oid_copy_str(name + namelen, bgp->name, len);
+ *length = len + namelen;
+ }
+ return bgp;
+}
+
+static uint8_t *mplsL3vpnVrfTable(struct variable *v, oid name[],
+ size_t *length, int exact, size_t *var_len,
+ WriteMethod **write_method)
+{
+ char vrf_name[VRF_NAMSIZ];
+ struct bgp *l3vpn_bgp;
+
+ if (smux_header_table(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ memset(vrf_name, 0, VRF_NAMSIZ);
+ l3vpn_bgp = bgpL3vpnVrf_lookup(v, name, length, vrf_name, exact);
+
+ if (!l3vpn_bgp)
+ return NULL;
+
+ switch (v->magic) {
+ case MPLSL3VPNVRFVPNID:
+ *var_len = 0;
+ return NULL;
+ case MPLSL3VPNVRFDESC:
+ *var_len = strnlen(l3vpn_bgp->name, VRF_NAMSIZ);
+ return (uint8_t *)l3vpn_bgp->name;
+ case MPLSL3VPNVRFRD:
+ /*
+ * this is a horror show but the MIB dicates one RD per vrf
+ * and not one RD per AFI as we (FRR) have. So this little gem
+ * returns the V4 one if it's set OR the v6 one if it's set or
+ * zero-length string id neither are set
+ */
+ memset(rd_buf, 0, RD_ADDRSTRLEN);
+ if (CHECK_FLAG(l3vpn_bgp->vpn_policy[AFI_IP].flags,
+ BGP_VPN_POLICY_TOVPN_RD_SET))
+ prefix_rd2str(&l3vpn_bgp->vpn_policy[AFI_IP].tovpn_rd,
+ rd_buf, sizeof(rd_buf),
+ bgp_get_asnotation(l3vpn_bgp));
+ else if (CHECK_FLAG(l3vpn_bgp->vpn_policy[AFI_IP6].flags,
+ BGP_VPN_POLICY_TOVPN_RD_SET))
+ prefix_rd2str(&l3vpn_bgp->vpn_policy[AFI_IP6].tovpn_rd,
+ rd_buf, sizeof(rd_buf),
+ bgp_get_asnotation(l3vpn_bgp));
+
+ *var_len = strnlen(rd_buf, RD_ADDRSTRLEN);
+ return (uint8_t *)rd_buf;
+ case MPLSL3VPNVRFCREATIONTIME:
+ return SNMP_INTEGER(
+ (uint32_t)l3vpn_bgp->snmp_stats->creation_time);
+ case MPLSL3VPNVRFOPERSTATUS:
+ if (l3vpn_bgp->snmp_stats->active)
+ return SNMP_INTEGER(1);
+ else
+ return SNMP_INTEGER(2);
+ case MPLSL3VPNVRFACTIVEINTERFACES:
+ return SNMP_INTEGER(bgp_vrf_interfaces(l3vpn_bgp, true));
+ case MPLSL3VPNVRFASSOCIATEDINTERFACES:
+ return SNMP_INTEGER(bgp_vrf_interfaces(l3vpn_bgp, false));
+ case MPLSL3VPNVRFCONFMIDRTETHRESH:
+ return SNMP_INTEGER(0);
+ case MPLSL3VPNVRFCONFHIGHRTETHRSH:
+ return SNMP_INTEGER(0);
+ case MPLSL3VPNVRFCONFMAXROUTES:
+ return SNMP_INTEGER(0);
+ case MPLSL3VPNVRFCONFLASTCHANGED:
+ return SNMP_INTEGER(
+ (uint32_t)l3vpn_bgp->snmp_stats->modify_time);
+ case MPLSL3VPNVRFCONFROWSTATUS:
+ return SNMP_INTEGER(1);
+ case MPLSL3VPNVRFCONFADMINSTATUS:
+ return SNMP_INTEGER(1);
+ case MPLSL3VPNVRFCONFSTORAGETYPE:
+ return SNMP_INTEGER(2);
+ }
+ return NULL;
+}
+
+/* 1.3.6.1.2.1.10.166.11.1.2.3.1.x = 14*/
+#define VRFRTTAB_NAMELEN 14
+static struct bgp *bgpL3vpnVrfRt_lookup(struct variable *v, oid name[],
+ size_t *length, char *vrf_name,
+ uint32_t *rt_index, uint8_t *rt_type,
+ int exact)
+{
+ uint32_t type_index_size;
+ struct bgp *l3vpn_bgp;
+ size_t namelen = v ? v->namelen : VRFRTTAB_NAMELEN;
+ int vrf_name_len, len;
+
+ /* too long ? */
+ if (*length - namelen
+ > (VRF_NAMSIZ + sizeof(uint32_t)) + sizeof(uint8_t))
+ return NULL;
+
+ type_index_size = sizeof(uint32_t) + sizeof(uint8_t);
+ /* do we have index info in the oid ? */
+ if (*length - namelen != 0 && *length - namelen >= type_index_size) {
+ /* copy the info from the oid */
+ vrf_name_len = *length - (namelen + type_index_size);
+ oid2string(name + namelen, vrf_name_len, vrf_name);
+ oid2int(name + namelen + vrf_name_len, (int *)rt_index);
+ *rt_type = name[namelen + vrf_name_len + sizeof(uint32_t)];
+ }
+
+ /* validate the RT index is in range */
+ if (*rt_index > AFI_IP6)
+ return NULL;
+
+ if (exact) {
+ l3vpn_bgp = bgp_lookup_by_name(vrf_name);
+ if (l3vpn_bgp && !is_bgp_vrf_mplsvpn(l3vpn_bgp))
+ return NULL;
+ if (!l3vpn_bgp)
+ return NULL;
+ if ((*rt_index != AFI_IP) && (*rt_index != AFI_IP6))
+ return NULL;
+ /* do we have RT config */
+ if (!(l3vpn_bgp->vpn_policy[*rt_index]
+ .rtlist[BGP_VPN_POLICY_DIR_FROMVPN]
+ || l3vpn_bgp->vpn_policy[*rt_index]
+ .rtlist[BGP_VPN_POLICY_DIR_TOVPN]))
+ return NULL;
+ return l3vpn_bgp;
+ }
+ if (strnlen(vrf_name, VRF_NAMSIZ) == 0)
+ l3vpn_bgp = bgp_lookup_by_name_next(vrf_name);
+ else
+ l3vpn_bgp = bgp_lookup_by_name(vrf_name);
+ while (l3vpn_bgp) {
+ switch (*rt_index) {
+ case 0:
+ *rt_index = AFI_IP;
+ break;
+ case AFI_IP:
+ *rt_index = AFI_IP6;
+ break;
+ case AFI_IP6:
+ *rt_index = 0;
+ continue;
+ }
+ if (*rt_index) {
+ switch (*rt_type) {
+ case 0:
+ *rt_type = MPLSVPNVRFRTTYPEIMPORT;
+ break;
+ case MPLSVPNVRFRTTYPEIMPORT:
+ *rt_type = MPLSVPNVRFRTTYPEEXPORT;
+ break;
+ case MPLSVPNVRFRTTYPEEXPORT:
+ case MPLSVPNVRFRTTYPEBOTH:
+ *rt_type = 0;
+ break;
+ }
+ if (*rt_type) {
+ bool import, export;
+
+ import =
+ (!!l3vpn_bgp->vpn_policy[*rt_index].rtlist
+ [BGP_VPN_POLICY_DIR_FROMVPN]);
+ export =
+ (!!l3vpn_bgp->vpn_policy[*rt_index].rtlist
+ [BGP_VPN_POLICY_DIR_TOVPN]);
+ if (*rt_type == MPLSVPNVRFRTTYPEIMPORT
+ && !import)
+ continue;
+ if (*rt_type == MPLSVPNVRFRTTYPEEXPORT
+ && !export)
+ continue;
+ /* ckeck for both */
+ if (*rt_type == MPLSVPNVRFRTTYPEIMPORT && import
+ && export
+ && ecommunity_cmp(
+ l3vpn_bgp->vpn_policy[*rt_index].rtlist
+ [BGP_VPN_POLICY_DIR_FROMVPN],
+ l3vpn_bgp->vpn_policy[*rt_index].rtlist
+ [BGP_VPN_POLICY_DIR_TOVPN]))
+ *rt_type = MPLSVPNVRFRTTYPEBOTH;
+
+ /* we have a match copy the oid info */
+ vrf_name_len =
+ strnlen(l3vpn_bgp->name, VRF_NAMSIZ);
+ len = vrf_name_len + sizeof(uint32_t)
+ + sizeof(uint8_t);
+ oid_copy_str(name + namelen, l3vpn_bgp->name,
+ vrf_name_len);
+ oid_copy_int(name + namelen + vrf_name_len,
+ (int *)rt_index);
+ name[(namelen + len) - 1] = *rt_type;
+ *length = len + namelen;
+ return l3vpn_bgp;
+ }
+ l3vpn_bgp = bgp_lookup_by_name_next(l3vpn_bgp->name);
+ }
+ }
+ return NULL;
+}
+
+static const char *rt_type2str(uint8_t rt_type)
+{
+ switch (rt_type) {
+ case MPLSVPNVRFRTTYPEIMPORT:
+ return "import";
+ case MPLSVPNVRFRTTYPEEXPORT:
+ return "export";
+ case MPLSVPNVRFRTTYPEBOTH:
+ return "both";
+ default:
+ return "unknown";
+ }
+}
+static uint8_t *mplsL3vpnVrfRtTable(struct variable *v, oid name[],
+ size_t *length, int exact, size_t *var_len,
+ WriteMethod **write_method)
+{
+ char vrf_name[VRF_NAMSIZ];
+ struct bgp *l3vpn_bgp;
+ uint32_t rt_index = 0;
+ uint8_t rt_type = 0;
+ char *rt_b = NULL;
+ static char rt_b_str[BUFSIZ] = {};
+
+ if (smux_header_table(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ memset(vrf_name, 0, VRF_NAMSIZ);
+ l3vpn_bgp = bgpL3vpnVrfRt_lookup(v, name, length, vrf_name, &rt_index,
+ &rt_type, exact);
+
+ if (!l3vpn_bgp)
+ return NULL;
+
+ switch (v->magic) {
+ case MPLSL3VPNVRFRT:
+ switch (rt_type) {
+ case MPLSVPNVRFRTTYPEIMPORT:
+ rt_b = ecommunity_ecom2str(
+ l3vpn_bgp->vpn_policy[rt_index]
+ .rtlist[BGP_VPN_POLICY_DIR_FROMVPN],
+ ECOMMUNITY_FORMAT_ROUTE_MAP,
+ ECOMMUNITY_ROUTE_TARGET);
+ break;
+ case MPLSVPNVRFRTTYPEEXPORT:
+ case MPLSVPNVRFRTTYPEBOTH:
+ rt_b = ecommunity_ecom2str(
+ l3vpn_bgp->vpn_policy[rt_index]
+ .rtlist[BGP_VPN_POLICY_DIR_TOVPN],
+ ECOMMUNITY_FORMAT_ROUTE_MAP,
+ ECOMMUNITY_ROUTE_TARGET);
+ break;
+ default:
+ break;
+ }
+ if (rt_b) {
+ *var_len = strnlen(rt_b, ECOMMUNITY_STRLEN);
+ strlcpy(rt_b_str, rt_b, sizeof(rt_b_str));
+ XFREE(MTYPE_ECOMMUNITY_STR, rt_b);
+ } else {
+ *var_len = 0;
+ }
+ return (uint8_t *)rt_b_str;
+ case MPLSL3VPNVRFRTDESCR:
+ /* since we dont have a description generate one */
+ memset(rt_description, 0, VRF_NAMSIZ + RT_PREAMBLE_SIZE);
+ snprintf(rt_description, VRF_NAMSIZ + RT_PREAMBLE_SIZE,
+ "RT %s for VRF %s", rt_type2str(rt_type),
+ l3vpn_bgp->name);
+ *var_len =
+ strnlen(rt_description, VRF_NAMSIZ + RT_PREAMBLE_SIZE);
+ return (uint8_t *)rt_description;
+ case MPLSL3VPNVRFRTROWSTATUS:
+ return SNMP_INTEGER(1);
+ case MPLSL3VPNVRFRTSTORAGETYPE:
+ return SNMP_INTEGER(2);
+ }
+ return NULL;
+}
+
+/* 1.3.6.1.2.1.10.166.11.1.3.1.1.x = 14*/
+#define PERFTAB_NAMELEN 14
+
+static uint8_t *mplsL3vpnPerfTable(struct variable *v, oid name[],
+ size_t *length, int exact, size_t *var_len,
+ WriteMethod **write_method)
+{
+ char vrf_name[VRF_NAMSIZ];
+ struct bgp *l3vpn_bgp;
+
+ if (smux_header_table(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ memset(vrf_name, 0, VRF_NAMSIZ);
+ l3vpn_bgp = bgpL3vpnVrf_lookup(v, name, length, vrf_name, exact);
+
+ if (!l3vpn_bgp)
+ return NULL;
+
+ switch (v->magic) {
+ case MPLSL3VPNVRFPERFROUTESADDED:
+ return SNMP_INTEGER(l3vpn_bgp->snmp_stats->routes_added);
+ case MPLSL3VPNVRFPERFROUTESDELETED:
+ return SNMP_INTEGER(l3vpn_bgp->snmp_stats->routes_deleted);
+ case MPLSL3VPNVRFPERFCURRNUMROUTES:
+ return SNMP_INTEGER(bgp_mpls_l3vpn_current_routes(l3vpn_bgp));
+ }
+ return NULL;
+}
+
+static struct bgp_path_info *
+bgp_lookup_route(struct bgp *l3vpn_bgp, struct bgp_dest **dest,
+ struct prefix *prefix, uint16_t policy, struct ipaddr *nexthop)
+{
+ struct bgp_path_info *pi = NULL;
+ struct bgp_table *table;
+
+ switch (prefix->family) {
+ case AF_INET:
+ table = l3vpn_bgp->rib[AFI_IP][SAFI_UNICAST];
+ break;
+ case AF_INET6:
+ table = l3vpn_bgp->rib[AFI_IP6][SAFI_UNICAST];
+ break;
+ default:
+ return NULL;
+ }
+
+ /*get the prefix */
+ *dest = bgp_node_lookup(table, prefix);
+ if (*dest == NULL)
+ return NULL;
+
+ /* now find the right path */
+ pi = bgp_dest_get_bgp_path_info(*dest);
+ for (; pi; pi = pi->next) {
+ switch (nexthop->ipa_type) {
+ case IPADDR_V4:
+ if (nexthop->ip._v4_addr.s_addr
+ == pi->attr->nexthop.s_addr)
+ return pi;
+ break;
+ case IPADDR_V6:
+ if (memcmp(&nexthop->ip._v6_addr,
+ &pi->attr->mp_nexthop_global,
+ sizeof(struct in6_addr))
+ == 0)
+ return pi;
+ break;
+ case IPADDR_NONE:
+ return pi;
+ }
+ }
+ return NULL;
+}
+
+static struct bgp_path_info *bgp_lookup_route_next(struct bgp **l3vpn_bgp,
+ struct bgp_dest **dest,
+ struct prefix *prefix,
+ uint16_t *policy,
+ struct ipaddr *nexthop)
+{
+ struct bgp_path_info *pi = NULL;
+ struct bgp_table *table;
+ const struct prefix *p;
+ uint8_t family;
+
+ /* First route?*/
+ if (prefix->prefixlen == 0) {
+ /* try V4 table */
+ table = (*l3vpn_bgp)->rib[AFI_IP][SAFI_UNICAST];
+ for (*dest = bgp_table_top(table); *dest;
+ *dest = bgp_route_next(*dest)) {
+ pi = bgp_dest_get_bgp_path_info(*dest);
+ if (pi)
+ break;
+ }
+
+ if (!pi) {
+ /* try V6 table */
+ table = (*l3vpn_bgp)->rib[AFI_IP6][SAFI_UNICAST];
+ for (*dest = bgp_table_top(table); *dest;
+ *dest = bgp_route_next(*dest)) {
+ pi = bgp_dest_get_bgp_path_info(*dest);
+ if (pi)
+ break;
+ }
+ }
+ return pi;
+ }
+ /* real next search for the entry first use exact lookup */
+ pi = bgp_lookup_route(*l3vpn_bgp, dest, prefix, *policy, nexthop);
+
+ if (pi == NULL)
+ return NULL;
+
+ p = bgp_dest_get_prefix(*dest);
+ family = p->family;
+
+ /* We have found the input path let's find the next one in the list */
+ if (pi->next) {
+ /* ensure OID is always higher for multipath routes by
+ * incrementing opaque policy oid
+ */
+ *policy += 1;
+ return pi->next;
+ }
+
+ /* No more paths in the input route so find the next route */
+ for (; *l3vpn_bgp;
+ *l3vpn_bgp = bgp_lookup_by_name_next((*l3vpn_bgp)->name)) {
+ *policy = 0;
+ if (!*dest) {
+ table = (*l3vpn_bgp)->rib[AFI_IP][SAFI_UNICAST];
+ *dest = bgp_table_top(table);
+ family = AF_INET;
+ } else
+ *dest = bgp_route_next(*dest);
+
+ while (true) {
+ for (; *dest; *dest = bgp_route_next(*dest)) {
+ pi = bgp_dest_get_bgp_path_info(*dest);
+
+ if (pi)
+ return pi;
+ }
+ if (family == AF_INET) {
+ table = (*l3vpn_bgp)
+ ->rib[AFI_IP6][SAFI_UNICAST];
+ *dest = bgp_table_top(table);
+ family = AF_INET6;
+ continue;
+ }
+ break;
+ }
+ }
+
+ return NULL;
+}
+
+static bool is_addr_type(oid id)
+{
+ switch (id) {
+ case INETADDRESSTYPEUNKNOWN:
+ case INETADDRESSTYPEIPV4:
+ case INETADDRESSTYPEIPV6:
+ return true;
+ }
+ return false;
+}
+
+/* 1.3.6.1.2.1.10.166.11.1.4.1.1.x = 14*/
+#define PERFTAB_NAMELEN 14
+
+static struct bgp_path_info *bgpL3vpnRte_lookup(struct variable *v, oid name[],
+ size_t *length, char *vrf_name,
+ struct bgp **l3vpn_bgp,
+ struct bgp_dest **dest,
+ uint16_t *policy, int exact)
+{
+ uint8_t i;
+ uint8_t vrf_name_len = 0;
+ struct bgp_path_info *pi = NULL;
+ size_t namelen = v ? v->namelen : IFCONFTAB_NAMELEN;
+ struct prefix prefix = {0};
+ struct ipaddr nexthop = {0};
+ uint8_t prefix_type;
+ uint8_t nexthop_type;
+
+ if ((uint32_t)(*length - namelen) > (VRF_NAMSIZ + 37))
+ return NULL;
+
+ if (*length - namelen != 0) {
+ /* parse incoming OID */
+ for (i = namelen; i < (*length); i++) {
+ if (is_addr_type(name[i]))
+ break;
+ vrf_name_len++;
+ }
+ if (vrf_name_len > VRF_NAMSIZ)
+ return NULL;
+
+ oid2string(name + namelen, vrf_name_len, vrf_name);
+ prefix_type = name[i++];
+ switch (prefix_type) {
+ case INETADDRESSTYPEUNKNOWN:
+ prefix.family = AF_UNSPEC;
+ break;
+ case INETADDRESSTYPEIPV4:
+ prefix.family = AF_INET;
+ oid2in_addr(&name[i], sizeof(struct in_addr),
+ &prefix.u.prefix4);
+ i += sizeof(struct in_addr);
+ break;
+ case INETADDRESSTYPEIPV6:
+ prefix.family = AF_INET6;
+ oid2in6_addr(&name[i], &prefix.u.prefix6);
+ i += sizeof(struct in6_addr);
+ break;
+ }
+ prefix.prefixlen = (uint8_t)name[i++];
+ *policy |= name[i++] << 8;
+ *policy |= name[i++];
+ nexthop_type = name[i++];
+ switch (nexthop_type) {
+ case INETADDRESSTYPEUNKNOWN:
+ nexthop.ipa_type = (prefix.family == AF_INET)
+ ? IPADDR_V4
+ : IPADDR_V6;
+ break;
+ case INETADDRESSTYPEIPV4:
+ nexthop.ipa_type = IPADDR_V4;
+ oid2in_addr(&name[i], sizeof(struct in_addr),
+ &nexthop.ip._v4_addr);
+ /* i += sizeof(struct in_addr); */
+ break;
+ case INETADDRESSTYPEIPV6:
+ nexthop.ipa_type = IPADDR_V6;
+ oid2in6_addr(&name[i], &nexthop.ip._v6_addr);
+ /* i += sizeof(struct in6_addr); */
+ break;
+ }
+ }
+
+ if (exact) {
+ *l3vpn_bgp = bgp_lookup_by_name(vrf_name);
+ if (*l3vpn_bgp && !is_bgp_vrf_mplsvpn(*l3vpn_bgp))
+ return NULL;
+ if (*l3vpn_bgp == NULL)
+ return NULL;
+
+ /* now lookup the route in this bgp table */
+ pi = bgp_lookup_route(*l3vpn_bgp, dest, &prefix, *policy,
+ &nexthop);
+ } else {
+ int str_len;
+
+ str_len = strnlen(vrf_name, VRF_NAMSIZ);
+ if (str_len == 0) {
+ *l3vpn_bgp = bgp_lookup_by_name_next(vrf_name);
+ } else
+ /* otherwise lookup the one we have */
+ *l3vpn_bgp = bgp_lookup_by_name(vrf_name);
+
+ if (*l3vpn_bgp == NULL)
+ return NULL;
+
+ pi = bgp_lookup_route_next(l3vpn_bgp, dest, &prefix, policy,
+ &nexthop);
+ if (pi) {
+ uint8_t vrf_name_len =
+ strnlen((*l3vpn_bgp)->name, VRF_NAMSIZ);
+ const struct prefix *p = bgp_dest_get_prefix(*dest);
+ uint8_t oid_index;
+ bool v4 = (p->family == AF_INET);
+ uint8_t addr_len = v4 ? sizeof(struct in_addr)
+ : sizeof(struct in6_addr);
+ struct attr *attr = pi->attr;
+
+ /* copy the index parameters */
+ oid_copy_str(&name[namelen], (*l3vpn_bgp)->name,
+ vrf_name_len);
+ oid_index = namelen + vrf_name_len;
+ if (v4) {
+ name[oid_index++] = INETADDRESSTYPEIPV4;
+ oid_copy_in_addr(&name[oid_index],
+ &p->u.prefix4);
+ } else {
+ name[oid_index++] = INETADDRESSTYPEIPV6;
+ oid_copy_in6_addr(&name[oid_index],
+ &p->u.prefix6);
+ }
+
+ oid_index += addr_len;
+ name[oid_index++] = p->prefixlen;
+ name[oid_index++] = *policy >> 8;
+ name[oid_index++] = *policy & 0xff;
+
+ if (!BGP_ATTR_NEXTHOP_AFI_IP6(attr)) {
+ if (attr->nexthop.s_addr == INADDR_ANY)
+ name[oid_index++] =
+ INETADDRESSTYPEUNKNOWN;
+ else {
+ name[oid_index++] = INETADDRESSTYPEIPV4;
+ oid_copy_in_addr(&name[oid_index],
+ &attr->nexthop);
+ oid_index += sizeof(struct in_addr);
+ }
+ } else {
+ if (IN6_IS_ADDR_UNSPECIFIED(
+ &attr->mp_nexthop_global))
+ name[oid_index++] =
+ INETADDRESSTYPEUNKNOWN;
+ else {
+ name[oid_index++] = INETADDRESSTYPEIPV6;
+ oid_copy_in6_addr(
+ &name[oid_index],
+ &attr->mp_nexthop_global);
+ oid_index += sizeof(struct in6_addr);
+ }
+ }
+ *length = oid_index;
+ }
+ }
+ return pi;
+}
+
+static uint8_t *mplsL3vpnRteTable(struct variable *v, oid name[],
+ size_t *length, int exact, size_t *var_len,
+ WriteMethod **write_method)
+{
+ char vrf_name[VRF_NAMSIZ];
+ struct bgp *l3vpn_bgp;
+ struct bgp_dest *dest;
+ struct bgp_path_info *pi, *bpi_ultimate;
+ const struct prefix *p;
+ uint16_t policy = 0;
+
+ if (smux_header_table(v, name, length, exact, var_len, write_method)
+ == MATCH_FAILED)
+ return NULL;
+
+ memset(vrf_name, 0, VRF_NAMSIZ);
+ pi = bgpL3vpnRte_lookup(v, name, length, vrf_name, &l3vpn_bgp, &dest,
+ &policy, exact);
+
+
+ if (!pi)
+ return NULL;
+
+ bpi_ultimate = bgp_get_imported_bpi_ultimate(pi);
+
+ p = bgp_dest_get_prefix(dest);
+
+ if (!p)
+ return NULL;
+
+ switch (v->magic) {
+ case MPLSL3VPNVRFRTEINETCIDRDESTTYPE:
+ switch (p->family) {
+ case AF_INET:
+ return SNMP_INTEGER(INETADDRESSTYPEIPV4);
+ case AF_INET6:
+ return SNMP_INTEGER(INETADDRESSTYPEIPV6);
+ default:
+ return SNMP_INTEGER(INETADDRESSTYPEUNKNOWN);
+ }
+ case MPLSL3VPNVRFRTEINETCIDRDEST:
+ switch (p->family) {
+ case AF_INET:
+ return SNMP_IPADDRESS(p->u.prefix4);
+ case AF_INET6:
+ return SNMP_IP6ADDRESS(p->u.prefix6);
+ default:
+ *var_len = 0;
+ return NULL;
+ }
+ case MPLSL3VPNVRFRTEINETCIDRPFXLEN:
+ return SNMP_INTEGER(p->prefixlen);
+ case MPLSL3VPNVRFRTEINETCIDRPOLICY:
+ *var_len = sizeof(mpls_l3vpn_policy_oid);
+ mpls_l3vpn_policy_oid[0] = policy >> 8;
+ mpls_l3vpn_policy_oid[1] = policy & 0xff;
+ return (uint8_t *)mpls_l3vpn_policy_oid;
+ case MPLSL3VPNVRFRTEINETCIDRNHOPTYPE:
+ if (!BGP_ATTR_NEXTHOP_AFI_IP6(pi->attr)) {
+ if (pi->attr->nexthop.s_addr == INADDR_ANY)
+ return SNMP_INTEGER(INETADDRESSTYPEUNKNOWN);
+ else
+ return SNMP_INTEGER(INETADDRESSTYPEIPV4);
+ } else if (IN6_IS_ADDR_UNSPECIFIED(
+ &pi->attr->mp_nexthop_global))
+ return SNMP_INTEGER(INETADDRESSTYPEUNKNOWN);
+ else
+ return SNMP_INTEGER(INETADDRESSTYPEIPV6);
+
+ case MPLSL3VPNVRFRTEINETCIDRNEXTHOP:
+ if (!BGP_ATTR_NEXTHOP_AFI_IP6(pi->attr))
+ if (pi->attr->nexthop.s_addr == INADDR_ANY) {
+ *var_len = 0;
+ return (uint8_t *)empty_nhop;
+ } else
+ return SNMP_IPADDRESS(pi->attr->nexthop);
+ else if (IN6_IS_ADDR_UNSPECIFIED(
+ &pi->attr->mp_nexthop_global)) {
+ *var_len = 0;
+ return (uint8_t *)empty_nhop;
+ } else
+ return SNMP_IP6ADDRESS(pi->attr->mp_nexthop_global);
+
+ case MPLSL3VPNVRFRTEINETCIDRIFINDEX:
+ if (pi->nexthop && pi->nexthop->nexthop)
+ return SNMP_INTEGER(pi->nexthop->nexthop->ifindex);
+ else
+ return SNMP_INTEGER(0);
+ case MPLSL3VPNVRFRTEINETCIDRTYPE:
+ if (pi->nexthop && pi->nexthop->nexthop) {
+ switch (pi->nexthop->nexthop->type) {
+ case NEXTHOP_TYPE_IFINDEX:
+ return SNMP_INTEGER(
+ MPLSL3VPNVRFRTECIDRTYPELOCAL);
+ case NEXTHOP_TYPE_IPV4:
+ case NEXTHOP_TYPE_IPV4_IFINDEX:
+ case NEXTHOP_TYPE_IPV6:
+ case NEXTHOP_TYPE_IPV6_IFINDEX:
+ return SNMP_INTEGER(
+ MPLSL3VPNVRFRTECIDRTYPEREMOTE);
+ case NEXTHOP_TYPE_BLACKHOLE:
+ switch (pi->nexthop->nexthop->bh_type) {
+ case BLACKHOLE_REJECT:
+ return SNMP_INTEGER(
+ MPLSL3VPNVRFRTECIDRTYPEREJECT);
+ case BLACKHOLE_UNSPEC:
+ case BLACKHOLE_NULL:
+ case BLACKHOLE_ADMINPROHIB:
+ return SNMP_INTEGER(
+ MPLSL3VPNVRFRTECIDRTYPEBLACKHOLE);
+ }
+ break;
+ }
+ } else
+ return SNMP_INTEGER(MPLSL3VPNVRFRTECIDRTYPEOTHER);
+ break;
+ case MPLSL3VPNVRFRTEINETCIDRPROTO:
+ switch (pi->type) {
+ case ZEBRA_ROUTE_CONNECT:
+ return SNMP_INTEGER(IANAIPROUTEPROTOCOLLOCAL);
+ case ZEBRA_ROUTE_STATIC:
+ return SNMP_INTEGER(IANAIPROUTEPROTOCOLNETMGMT);
+ case ZEBRA_ROUTE_RIP:
+ case ZEBRA_ROUTE_RIPNG:
+ return SNMP_INTEGER(IANAIPROUTEPROTOCOLRIP);
+ case ZEBRA_ROUTE_OSPF:
+ case ZEBRA_ROUTE_OSPF6:
+ return SNMP_INTEGER(IANAIPROUTEPROTOCOLOSPF);
+ case ZEBRA_ROUTE_ISIS:
+ return SNMP_INTEGER(IANAIPROUTEPROTOCOLISIS);
+ case ZEBRA_ROUTE_BGP:
+ return SNMP_INTEGER(IANAIPROUTEPROTOCOLBGP);
+ case ZEBRA_ROUTE_EIGRP:
+ return SNMP_INTEGER(IANAIPROUTEPROTOCOLCISCOEIGRP);
+ default:
+ return SNMP_INTEGER(IANAIPROUTEPROTOCOLOTHER);
+ }
+ case MPLSL3VPNVRFRTEINETCIDRAGE:
+ return SNMP_INTEGER(pi->uptime);
+ case MPLSL3VPNVRFRTEINETCIDRNEXTHOPAS:
+ return SNMP_INTEGER(pi->peer ? pi->peer->as : 0);
+ case MPLSL3VPNVRFRTEINETCIDRMETRIC1:
+ if (bpi_ultimate->extra)
+ return SNMP_INTEGER(bpi_ultimate->extra->igpmetric);
+ else
+ return SNMP_INTEGER(0);
+ case MPLSL3VPNVRFRTEINETCIDRMETRIC2:
+ return SNMP_INTEGER(-1);
+ case MPLSL3VPNVRFRTEINETCIDRMETRIC3:
+ return SNMP_INTEGER(-1);
+ case MPLSL3VPNVRFRTEINETCIDRMETRIC4:
+ return SNMP_INTEGER(-1);
+ case MPLSL3VPNVRFRTEINETCIDRMETRIC5:
+ return SNMP_INTEGER(-1);
+ case MPLSL3VPNVRFRTEINETCIDRXCPOINTER:
+ return SNMP_OCTET(0);
+ case MPLSL3VPNVRFRTEINETCIDRSTATUS:
+ return SNMP_INTEGER(1);
+ }
+ return NULL;
+}
+
+void bgp_mpls_l3vpn_module_init(void)
+{
+ hook_register(bgp_vrf_status_changed, bgp_vrf_check_update_active);
+ hook_register(bgp_snmp_init_stats, bgp_init_snmp_stats);
+ hook_register(bgp_snmp_update_last_changed,
+ bgp_mpls_l3vpn_update_last_changed);
+ hook_register(bgp_snmp_update_stats, bgp_snmp_update_route_stats);
+ REGISTER_MIB("mplsL3VpnMIB", mpls_l3vpn_variables, variable,
+ mpls_l3vpn_oid);
+}