bgp_info_delete(rn, old_local);
}
+/*
+ * Calculate the best path for an EVPN route. Install/update best path in zebra,
+ * if appropriate.
+ */
+static int evpn_vrf_route_select_install(struct bgp *bgp_vrf,
+ struct bgp_node *rn,
+ struct prefix *p,
+ afi_t afi,
+ safi_t safi)
+{
+ struct bgp_info *old_select, *new_select;
+ struct bgp_info_pair old_and_new;
+ int ret = 0;
+
+ /* Compute the best path. */
+ bgp_best_selection(bgp_vrf, rn, &bgp_vrf->maxpaths[afi][safi],
+ &old_and_new, afi, safi);
+ old_select = old_and_new.old;
+ new_select = old_and_new.new;
+
+ /* If the best path hasn't changed - see if there is still something to
+ * update
+ * to zebra RIB.
+ */
+ if (old_select && old_select == new_select
+ && old_select->type == ZEBRA_ROUTE_BGP
+ && old_select->sub_type == BGP_ROUTE_NORMAL
+ && !CHECK_FLAG(rn->flags, BGP_NODE_USER_CLEAR)
+ && !CHECK_FLAG(old_select->flags, BGP_INFO_ATTR_CHANGED)
+ && !bgp_vrf->addpath_tx_used[afi][safi]) {
+ if (bgp_zebra_has_route_changed(rn, old_select))
+ bgp_zebra_announce(rn, p, old_select, bgp_vrf,
+ afi, safi);
+ UNSET_FLAG(old_select->flags, BGP_INFO_MULTIPATH_CHG);
+ bgp_zebra_clear_route_change_flags(rn);
+ return ret;
+ }
+
+ /* If the user did a "clear" this flag will be set */
+ UNSET_FLAG(rn->flags, BGP_NODE_USER_CLEAR);
+
+ /* bestpath has changed; update relevant fields and install or uninstall
+ * into the zebra RIB.
+ */
+ if (old_select || new_select)
+ bgp_bump_version(rn);
+
+ if (old_select)
+ bgp_info_unset_flag(rn, old_select, BGP_INFO_SELECTED);
+ if (new_select) {
+ bgp_info_set_flag(rn, new_select, BGP_INFO_SELECTED);
+ bgp_info_unset_flag(rn, new_select, BGP_INFO_ATTR_CHANGED);
+ UNSET_FLAG(new_select->flags, BGP_INFO_MULTIPATH_CHG);
+ }
+
+ if (new_select && new_select->type == ZEBRA_ROUTE_BGP
+ && new_select->sub_type == BGP_ROUTE_NORMAL) {
+ bgp_zebra_announce(rn, p, new_select, bgp_vrf,
+ afi, safi);
+
+ /* If an old best existed and it was a "local" route, the only
+ * reason
+ * it would be supplanted is due to MAC mobility procedures. So,
+ * we
+ * need to do an implicit delete and withdraw that route from
+ * peers.
+ */
+ /*if (old_select && old_select->peer == bgp_vrf->peer_self
+ && old_select->type == ZEBRA_ROUTE_BGP
+ && old_select->sub_type == BGP_ROUTE_STATIC) {
+ //evpn_delete_old_local_route(bgp, vpn, rn, old_select);
+ }*/ //TODO_MITESH: probably not needed for vrf routes, think!!
+ } else {
+ if (old_select && old_select->type == ZEBRA_ROUTE_BGP
+ && old_select->sub_type == BGP_ROUTE_NORMAL) {
+ bgp_zebra_withdraw(p, old_select, safi);
+ }
+ }
+
+ /* Clear any route change flags. */
+ bgp_zebra_clear_route_change_flags(rn);
+
+ /* Reap old select bgp_info, if it has been removed */
+ if (old_select && CHECK_FLAG(old_select->flags, BGP_INFO_REMOVED))
+ bgp_info_reap(rn, old_select);
+
+ return ret;
+}
+
/*
* Calculate the best path for an EVPN route. Install/update best path in zebra,
* if appropriate.
return update_routes_for_vni(bgp, vpn);
}
+/*
+ * Install route entry into the VRF routing table and invoke route selection.
+ */
+static int install_evpn_route_entry_in_vrf(struct bgp *bgp_vrf,
+ struct prefix_evpn *evp,
+ struct bgp_info *parent_ri)
+{
+ struct bgp_node *rn;
+ struct bgp_info *ri;
+ struct attr *attr_new;
+ int ret;
+ struct prefix p;
+ struct prefix *pp = &p;
+ afi_t afi = 0;
+ safi_t safi = 0;
+
+ memset(pp, 0, sizeof(struct prefix));
+ ip_prefix_from_type2_prefix(evp, pp);
+
+ /* Create (or fetch) route within the VRF. */
+ /* NOTE: There is no RD here. */
+ if (IS_EVPN_PREFIX_IPADDR_V4(evp)) {
+ afi = AFI_IP;
+ safi = SAFI_UNICAST;
+ rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp);
+ } else if (IS_EVPN_PREFIX_IPADDR_V6(evp)) {
+ afi = AFI_IP6;
+ safi = SAFI_UNICAST;
+ rn = bgp_node_get(bgp_vrf->rib[afi][safi], pp);
+ } else
+ return 0;
+
+ /* Check if route entry is already present. */
+ for (ri = rn->info; ri; ri = ri->next)
+ if (ri->extra
+ && (struct bgp_info *)ri->extra->parent == parent_ri)
+ break;
+
+ if (!ri) {
+ /* Add (or update) attribute to hash. */
+ attr_new = bgp_attr_intern(parent_ri->attr);
+
+ /* Create new route with its attribute. */
+ ri = info_make(parent_ri->type, parent_ri->sub_type, 0,
+ parent_ri->peer, attr_new, rn);
+ SET_FLAG(ri->flags, BGP_INFO_VALID);
+ bgp_info_extra_get(ri);
+ ri->extra->parent = parent_ri;
+ if (parent_ri->extra)
+ memcpy(&ri->extra->label, &parent_ri->extra->label,
+ BGP_LABEL_BYTES);
+ bgp_info_add(rn, ri);
+ } else {
+ if (attrhash_cmp(ri->attr, parent_ri->attr)
+ && !CHECK_FLAG(ri->flags, BGP_INFO_REMOVED)) {
+ bgp_unlock_node(rn);
+ return 0;
+ }
+ /* The attribute has changed. */
+ /* Add (or update) attribute to hash. */
+ attr_new = bgp_attr_intern(parent_ri->attr);
+
+ /* Restore route, if needed. */
+ if (CHECK_FLAG(ri->flags, BGP_INFO_REMOVED))
+ bgp_info_restore(rn, ri);
+
+ /* Mark if nexthop has changed. */
+ if (!IPV4_ADDR_SAME(&ri->attr->nexthop, &attr_new->nexthop))
+ SET_FLAG(ri->flags, BGP_INFO_IGP_CHANGED);
+
+ /* Unintern existing, set to new. */
+ bgp_attr_unintern(&ri->attr);
+ ri->attr = attr_new;
+ ri->uptime = bgp_clock();
+ }
+
+ /* Perform route selection and update zebra, if required. */
+ ret = evpn_vrf_route_select_install(bgp_vrf, rn, pp, afi, safi);
+
+ return ret;
+}
+
/*
* Install route entry into the VNI routing table and invoke route selection.
*/
return ret;
}
+/*
+ * Uninstall route entry from the VRF routing table and send message
+ * to zebra, if appropriate.
+ */
+static int uninstall_evpn_route_entry_in_vrf(struct bgp *bgp_vrf,
+ struct prefix_evpn *evp,
+ struct bgp_info *parent_ri)
+{
+ struct bgp_node *rn;
+ struct bgp_info *ri;
+ int ret;
+ struct prefix p;
+ struct prefix *pp = &p;
+ afi_t afi = 0;
+ safi_t safi = 0;
+
+ memset(pp, 0, sizeof(struct prefix));
+ ip_prefix_from_type2_prefix(evp, pp);
+
+ /* Locate route within the VRF. */
+ /* NOTE: There is no RD here. */
+ if (IS_EVPN_PREFIX_IPADDR_V4(evp)) {
+ afi = AFI_IP;
+ safi = SAFI_UNICAST;
+ rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp);
+ } else {
+ afi = AFI_IP6;
+ safi = SAFI_UNICAST;
+ rn = bgp_node_lookup(bgp_vrf->rib[afi][safi], pp);
+ }
+
+ if (!rn)
+ return 0;
+
+ /* Find matching route entry. */
+ for (ri = rn->info; ri; ri = ri->next)
+ if (ri->extra
+ && (struct bgp_info *)ri->extra->parent == parent_ri)
+ break;
+
+ if (!ri)
+ return 0;
+
+ /* Mark entry for deletion */
+ bgp_info_delete(rn, ri);
+
+ /* Perform route selection and update zebra, if required. */
+ ret = evpn_vrf_route_select_install(bgp_vrf, rn, pp, afi, safi);
+
+ /* Unlock route node. */
+ bgp_unlock_node(rn);
+
+ return ret;
+}
+
/*
* Uninstall route entry from the VNI routing table and send message
* to zebra, if appropriate.
0);
}
+/*
+ * Install or uninstall route in matching VRFs (list).
+ */
+static int install_uninstall_route_in_vrfs(struct bgp *bgp_def, afi_t afi,
+ safi_t safi, struct prefix_evpn *evp,
+ struct bgp_info *ri,
+ struct list *vrfs, int install)
+{
+ char buf[PREFIX2STR_BUFFER];
+ struct bgp *bgp_vrf;
+ struct listnode *node, *nnode;
+
+ /* Only type-2 routes go into a VRF */
+ if (!(evp->prefix.route_type == BGP_EVPN_MAC_IP_ROUTE))
+ return 0;
+
+ for (ALL_LIST_ELEMENTS(vrfs, node, nnode, bgp_vrf)) {
+ int ret;
+
+ if (install)
+ ret = install_evpn_route_entry_in_vrf(bgp_vrf,
+ evp, ri);
+ else
+ ret = uninstall_evpn_route_entry_in_vrf(bgp_vrf,
+ evp, ri);
+
+ if (ret) {
+ zlog_err("%u: Failed to %s prefix %s in VRF %s",
+ bgp_def->vrf_id,
+ install ? "install" : "uninstall",
+ prefix2str(evp, buf, sizeof(buf)),
+ vrf_id_to_name(bgp_vrf->vrf_id));
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
/*
* Install or uninstall route in matching VNIs (list).
*/
u_char type, sub_type;
struct ecommunity_val *eval;
struct ecommunity_val eval_tmp;
- struct irt_node *irt;
+ struct irt_node *irt; /* import rt for l2vni */
+ struct vrf_irt_node *vrf_irt; /* import rt for l3vni */
/* Only deal with RTs */
pnt = (ecom->val + (i * ECOMMUNITY_SIZE));
if (sub_type != ECOMMUNITY_ROUTE_TARGET)
continue;
- /* Are we interested in this RT? */
+ /* Import route into matching l2-vnis */
irt = lookup_import_rt(bgp, eval);
if (irt && irt->vnis)
install_uninstall_route_in_vnis(bgp, afi, safi, evp, ri,
irt->vnis, import);
+ /* Import route into matching l3-vnis (vrfs) */
+ vrf_irt = lookup_vrf_import_rt(eval);
+ if (vrf_irt && vrf_irt->vrfs)
+ install_uninstall_route_in_vrfs(bgp, afi, safi, evp, ri,
+ vrf_irt->vrfs, import);
+
/* Also check for non-exact match. In this, we mask out the AS
* and
* only check on the local-admin sub-field. This is to
* VNI as the RT for EBGP peering too.
*/
irt = NULL;
+ vrf_irt = NULL;
if (type == ECOMMUNITY_ENCODE_AS
|| type == ECOMMUNITY_ENCODE_AS4
|| type == ECOMMUNITY_ENCODE_IP) {
memcpy(&eval_tmp, eval, ECOMMUNITY_SIZE);
mask_ecom_global_admin(&eval_tmp, eval);
irt = lookup_import_rt(bgp, &eval_tmp);
+ vrf_irt = lookup_vrf_import_rt(&eval_tmp);
}
if (irt && irt->vnis)
install_uninstall_route_in_vnis(bgp, afi, safi, evp, ri,
irt->vnis, import);
+ if (vrf_irt && vrf_irt->vrfs)
+ install_uninstall_route_in_vrfs(bgp, afi, safi, evp,
+ ri, vrf_irt->vrfs,
+ import);
}
return 0;
json_object_object_add(json, "exportRts", json_export_rtl);
}
+static void evpn_show_vrf_routes(struct vty *vty,
+ struct bgp *bgp_vrf)
+{
+ struct bgp *bgp_def = NULL;
+ struct bgp_node *rn;
+ struct bgp_info *ri;
+ int header = 1;
+ u_int32_t prefix_cnt, path_cnt;
+
+ prefix_cnt = path_cnt = 0;
+ bgp_def = bgp_get_default();
+ if (!bgp_def)
+ return;
+
+ for (rn = bgp_table_top(bgp_vrf->rib[AFI_L2VPN][SAFI_EVPN]); rn;
+ rn = bgp_route_next(rn)) {
+ char prefix_str[BUFSIZ];
+
+ bgp_evpn_route2str((struct prefix_evpn *)&rn->p, prefix_str,
+ sizeof(prefix_str));
+
+ if (rn->info) {
+ /* Overall header/legend displayed once. */
+ if (header) {
+ bgp_evpn_show_route_header(vty, bgp_def, NULL);
+ header = 0;
+ }
+ prefix_cnt++;
+ }
+
+ /* For EVPN, the prefix is displayed for each path (to fit in
+ * with code that already exists).
+ */
+ for (ri = rn->info; ri; ri = ri->next) {
+ route_vty_out(vty, &rn->p, ri, 0, SAFI_EVPN, NULL);
+ path_cnt++;
+ }
+ }
+
+ if (prefix_cnt == 0)
+ vty_out(vty, "No EVPN prefixes exist for this VRF");
+ else
+ vty_out(vty, "\nDisplayed %u prefixes (%u paths)",
+ prefix_cnt, path_cnt);
+}
+
static void show_vni_routes(struct bgp *bgp, struct bgpevpn *vpn, int type,
struct vty *vty, struct in_addr vtep_ip,
json_object *json)
return CMD_SUCCESS;
}
+/*
+ * Display per-VRF EVPN routing table.
+ */
+DEFUN(show_bgp_l2vpn_evpn_route_vrf, show_bgp_l2vpn_evpn_route_vrf_cmd,
+ "show bgp l2vpn evpn route vrf VRFNAME",
+ SHOW_STR
+ BGP_STR
+ L2VPN_HELP_STR
+ EVPN_HELP_STR
+ "EVPN route information\n"
+ "VRF\n"
+ "VRF Name\n")
+{
+ int vrf_idx = 6;
+ char *vrf_name = NULL;
+ struct bgp *bgp_vrf = NULL;
+
+ vrf_name = argv[vrf_idx]->arg;
+ bgp_vrf = bgp_lookup_by_name(vrf_name);
+ if (!bgp_vrf)
+ return CMD_WARNING;
+
+ evpn_show_vrf_routes(vty, bgp_vrf);
+
+ return CMD_SUCCESS;
+}
+
/*
* Display per-VNI EVPN routing table.
*/
install_element(VIEW_NODE, &show_bgp_l2vpn_evpn_route_rd_cmd);
install_element(VIEW_NODE, &show_bgp_l2vpn_evpn_route_rd_macip_cmd);
install_element(VIEW_NODE, &show_bgp_l2vpn_evpn_route_vni_cmd);
+ install_element(VIEW_NODE, &show_bgp_l2vpn_evpn_route_vrf_cmd);
install_element(VIEW_NODE,
&show_bgp_l2vpn_evpn_route_vni_multicast_cmd);
install_element(VIEW_NODE, &show_bgp_l2vpn_evpn_route_vni_macip_cmd);
projects / mirror / frr.git / commitdiff