When a vrf label is created by a client and the client disconnects
we should clean up any vrf labels associated with that client.
eva# show mpls table
Inbound Label Type Nexthop Outbound Label
-----------------------------------------------
1000 SHARP RED -
eva# exit
sharpd@eva ~/f/zebra (label_destruction)> ps -ef | grep frr
root
4017793 1 0 13:57 ? 00:00:00 /usr/lib/frr/watchfrr -d -F datacenter --log file:/var/log/frr/watchfrr.log --log-level debug zebra bgpd ospfd isisd pimd eigrpd sharpd staticd
frr
4017824 1 0 13:57 ? 00:00:00 /usr/lib/frr/zebra -d -F datacenter --log file:/tmp/zebra.log -r --graceful_restart 60 -A 127.0.0.1 -s
90000000
frr
4017829 1 0 13:57 ? 00:00:00 /usr/lib/frr/bgpd -d -F datacenter -M rpki -A 127.0.0.1
frr
4017836 1 0 13:57 ? 00:00:00 /usr/lib/frr/ospfd -d -F datacenter -A 127.0.0.1
frr
4017839 1 0 13:57 ? 00:00:00 /usr/lib/frr/isisd -d -F datacenter -A 127.0.0.1
frr
4017842 1 0 13:57 ? 00:00:00 /usr/lib/frr/pimd -d -F datacenter -A 127.0.0.1
frr
4017865 1 0 13:57 ? 00:00:00 /usr/lib/frr/eigrpd -d -F datacenter -A 127.0.0.1
frr
4017869 1 0 13:57 ? 00:00:00 /usr/lib/frr/sharpd -d -F datacenter -A 127.0.0.1
frr
4017888 1 0 13:57 ? 00:00:00 /usr/lib/frr/staticd -d -F datacenter -A 127.0.0.1
sharpd
4018624 3938423 0 14:02 pts/10 00:00:00 grep --color=auto frr
sharpd@eva ~/f/zebra (label_destruction)> sudo kill -9
4017869
sharpd@eva ~/f/zebra (label_destruction)> sudo vtysh -c "show mpls table"
sharpd@eva ~/f/zebra (label_destruction)>
Fixes: #1787
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
}
zvrf->label[afi] = nlabel;
+ zvrf->label_proto[afi] = client->proto;
+
stream_failure:
return;
}
}
}
+/*
+ * When a vrf label is assigned and the client goes away
+ * we should cleanup the vrf labels associated with
+ * that zclient.
+ */
+void zebra_mpls_client_cleanup_vrf_label(uint8_t proto)
+{
+ struct vrf *vrf;
+ struct zebra_vrf *def_zvrf = zebra_vrf_lookup_by_id(VRF_DEFAULT);
+
+ if (def_zvrf == NULL)
+ return;
+
+ RB_FOREACH (vrf, vrf_id_head, &vrfs_by_id) {
+ struct zebra_vrf *zvrf = vrf->info;
+ afi_t afi;
+
+ if (!zvrf)
+ continue;
+
+ for (afi = AFI_IP; afi < AFI_MAX; afi++) {
+ if (zvrf->label_proto[afi] == proto
+ && zvrf->label[afi] != MPLS_LABEL_NONE)
+ lsp_uninstall(def_zvrf, zvrf->label[afi]);
+
+ /*
+ * Cleanup data structures by fiat
+ */
+ zvrf->label_proto[afi] = 0;
+ zvrf->label[afi] = MPLS_LABEL_NONE;
+ }
+ }
+}
+
/*
* Called upon process exiting, need to delete LSP forwarding
* entries from the kernel.
*/
void zebra_mpls_vty_init(void);
+/*
+ * When cleaning up a client connection ensure that there are no
+ * vrf labels that need cleaning up too
+ */
+void zebra_mpls_client_cleanup_vrf_label(uint8_t proto);
+
/* Inline functions. */
/*
/* MPLS Label to handle L3VPN <-> vrf popping */
mpls_label_t label[AFI_MAX];
+ uint8_t label_proto[AFI_MAX];
/* MPLS static LSP config table */
struct hash *slsp_table;
close(client->sock);
if (DYNAMIC_CLIENT_GR_DISABLED(client)) {
+ zebra_mpls_client_cleanup_vrf_label(client->proto);
+
nroutes = rib_score_proto(client->proto,
client->instance);
zlog_notice(