diff options
Diffstat (limited to 'zebra/zebra_evpn_mh.c')
| -rw-r--r-- | zebra/zebra_evpn_mh.c | 2147 |
1 files changed, 2147 insertions, 0 deletions
diff --git a/zebra/zebra_evpn_mh.c b/zebra/zebra_evpn_mh.c new file mode 100644 index 0000000000..029480eb4a --- /dev/null +++ b/zebra/zebra_evpn_mh.c @@ -0,0 +1,2147 @@ +/* + * Zebra EVPN multihoming code + * + * Copyright (C) 2019 Cumulus Networks, Inc. + * Anuradha Karuppiah + * + * This file is part of FRR. + * + * FRR is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * FRR is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + */ + +#include <zebra.h> + +#include "command.h" +#include "hash.h" +#include "if.h" +#include "jhash.h" +#include "linklist.h" +#include "log.h" +#include "memory.h" +#include "prefix.h" +#include "stream.h" +#include "table.h" +#include "vlan.h" +#include "vxlan.h" + +#include "zebra/zebra_router.h" +#include "zebra/debug.h" +#include "zebra/interface.h" +#include "zebra/rib.h" +#include "zebra/rt.h" +#include "zebra/rt_netlink.h" +#include "zebra/zebra_errors.h" +#include "zebra/zebra_l2.h" +#include "zebra/zebra_memory.h" +#include "zebra/zebra_ns.h" +#include "zebra/zebra_vrf.h" +#include "zebra/zebra_vxlan.h" +#include "zebra/zebra_evpn.h" +#include "zebra/zebra_evpn_mac.h" +#include "zebra/zebra_vxlan_private.h" +#include "zebra/zebra_router.h" +#include "zebra/zebra_evpn_mh.h" +#include "zebra/zebra_nhg.h" + +DEFINE_MTYPE_STATIC(ZEBRA, ZACC_BD, "Access Broadcast Domain"); +DEFINE_MTYPE_STATIC(ZEBRA, ZES, "Ethernet Segment"); +DEFINE_MTYPE_STATIC(ZEBRA, ZES_EVI, "ES info per-EVI"); +DEFINE_MTYPE_STATIC(ZEBRA, ZMH_INFO, "MH global info"); +DEFINE_MTYPE_STATIC(ZEBRA, ZES_VTEP, "VTEP attached to the ES"); + +static void zebra_evpn_es_get_one_base_evpn(void); +static int zebra_evpn_es_evi_send_to_client(struct zebra_evpn_es *es, + zebra_evpn_t *zevpn, bool add); +static void zebra_evpn_local_es_del(struct zebra_evpn_es *es); +static int zebra_evpn_local_es_update(struct zebra_if *zif, uint32_t lid, + struct ethaddr *sysmac); + +esi_t zero_esi_buf, *zero_esi = &zero_esi_buf; + +/*****************************************************************************/ +/* Ethernet Segment to EVI association - + * 1. The ES-EVI entry is maintained as a RB tree per L2-VNI + * (zebra_evpn_t.es_evi_rb_tree). + * 2. Each local ES-EVI entry is sent to BGP which advertises it as an + * EAD-EVI (Type-1 EVPN) route + * 3. Local ES-EVI setup is re-evaluated on the following triggers - + * a. When an ESI is set or cleared on an access port. + * b. When an access port associated with an ESI is deleted. + * c. When VLAN member ship changes on an access port. + * d. When a VXLAN_IF is set or cleared on an access broadcast domain. + * e. When a L2-VNI is added or deleted for a VxLAN_IF. + * 4. Currently zebra doesn't remote ES-EVIs. Those are managed and maintained + * entirely in BGP which consolidates them into a remote ES. The remote ES + * is then sent to zebra which allocates a NHG for it. + */ + +/* compare ES-IDs for the ES-EVI RB tree maintained per-EVPN */ +static int zebra_es_evi_rb_cmp(const struct zebra_evpn_es_evi *es_evi1, + const struct zebra_evpn_es_evi *es_evi2) +{ + return memcmp(&es_evi1->es->esi, &es_evi2->es->esi, ESI_BYTES); +} +RB_GENERATE(zebra_es_evi_rb_head, zebra_evpn_es_evi, + rb_node, zebra_es_evi_rb_cmp); + +/* allocate a new ES-EVI and insert it into the per-L2-VNI and per-ES + * tables. + */ +static struct zebra_evpn_es_evi *zebra_evpn_es_evi_new(struct zebra_evpn_es *es, + zebra_evpn_t *zevpn) +{ + struct zebra_evpn_es_evi *es_evi; + + es_evi = XCALLOC(MTYPE_ZES_EVI, sizeof(struct zebra_evpn_es_evi)); + + es_evi->es = es; + es_evi->zevpn = zevpn; + + /* insert into the EVPN-ESI rb tree */ + if (RB_INSERT(zebra_es_evi_rb_head, &zevpn->es_evi_rb_tree, es_evi)) { + XFREE(MTYPE_ZES_EVI, es_evi); + return NULL; + } + + /* add to the ES's VNI list */ + listnode_init(&es_evi->es_listnode, es_evi); + listnode_add(es->es_evi_list, &es_evi->es_listnode); + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("es %s evi %d new", + es_evi->es->esi_str, es_evi->zevpn->vni); + + return es_evi; +} + +/* returns TRUE if the EVPN is ready to be sent to BGP */ +static inline bool zebra_evpn_send_to_client_ok(zebra_evpn_t *zevpn) +{ + return !!(zevpn->flags & ZEVPN_READY_FOR_BGP); +} + +/* Evaluate if the es_evi is ready to be sent BGP - + * 1. If it is ready an add is sent to BGP + * 2. If it is not ready a del is sent (if the ES had been previously added + * to BGP). + */ +static void zebra_evpn_es_evi_re_eval_send_to_client( + struct zebra_evpn_es_evi *es_evi) +{ + bool old_ready; + bool new_ready; + + old_ready = !!(es_evi->flags & ZEBRA_EVPNES_EVI_READY_FOR_BGP); + + /* ES and L2-VNI have to be individually ready for BGP */ + if ((es_evi->flags & ZEBRA_EVPNES_EVI_LOCAL) && + (es_evi->es->flags & ZEBRA_EVPNES_READY_FOR_BGP) && + zebra_evpn_send_to_client_ok(es_evi->zevpn)) + es_evi->flags |= ZEBRA_EVPNES_EVI_READY_FOR_BGP; + else + es_evi->flags &= ~ZEBRA_EVPNES_EVI_READY_FOR_BGP; + + new_ready = !!(es_evi->flags & ZEBRA_EVPNES_EVI_READY_FOR_BGP); + + if (old_ready == new_ready) + return; + + if (new_ready) + zebra_evpn_es_evi_send_to_client(es_evi->es, es_evi->zevpn, + true /* add */); + else + zebra_evpn_es_evi_send_to_client(es_evi->es, es_evi->zevpn, + false /* add */); +} + +/* remove the ES-EVI from the per-L2-VNI and per-ES tables and free + * up the memory. + */ +static void zebra_evpn_es_evi_free(struct zebra_evpn_es_evi *es_evi) +{ + struct zebra_evpn_es *es = es_evi->es; + zebra_evpn_t *zevpn = es_evi->zevpn; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("es %s evi %d free", + es_evi->es->esi_str, es_evi->zevpn->vni); + + /* remove from the ES's VNI list */ + list_delete_node(es->es_evi_list, &es_evi->es_listnode); + + /* remove from the VNI-ESI rb tree */ + RB_REMOVE(zebra_es_evi_rb_head, &zevpn->es_evi_rb_tree, es_evi); + + /* remove from the VNI-ESI rb tree */ + XFREE(MTYPE_ZES_EVI, es_evi); +} + +/* find the ES-EVI in the per-L2-VNI RB tree */ +static struct zebra_evpn_es_evi *zebra_evpn_es_evi_find( + struct zebra_evpn_es *es, zebra_evpn_t *zevpn) +{ + struct zebra_evpn_es_evi es_evi; + + es_evi.es = es; + + return RB_FIND(zebra_es_evi_rb_head, &zevpn->es_evi_rb_tree, &es_evi); +} + +/* Tell BGP about an ES-EVI deletion and then delete it */ +static void zebra_evpn_local_es_evi_do_del(struct zebra_evpn_es_evi *es_evi) +{ + if (!(es_evi->flags & ZEBRA_EVPNES_EVI_LOCAL)) + return; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("local es %s evi %d del", + es_evi->es->esi_str, es_evi->zevpn->vni); + + if (es_evi->flags & ZEBRA_EVPNES_EVI_READY_FOR_BGP) { + /* send a del only if add was sent for it earlier */ + zebra_evpn_es_evi_send_to_client(es_evi->es, + es_evi->zevpn, false /* add */); + } + + /* delete it from the EVPN's local list */ + list_delete_node(es_evi->zevpn->local_es_evi_list, + &es_evi->l2vni_listnode); + + es_evi->flags &= ~ZEBRA_EVPNES_EVI_LOCAL; + zebra_evpn_es_evi_free(es_evi); +} +static void zebra_evpn_local_es_evi_del(struct zebra_evpn_es *es, + zebra_evpn_t *zevpn) +{ + struct zebra_evpn_es_evi *es_evi; + + es_evi = zebra_evpn_es_evi_find(es, zevpn); + if (es_evi) + zebra_evpn_local_es_evi_do_del(es_evi); +} + +/* Create an ES-EVI if it doesn't already exist and tell BGP */ +static void zebra_evpn_local_es_evi_add(struct zebra_evpn_es *es, + zebra_evpn_t *zevpn) +{ + struct zebra_evpn_es_evi *es_evi; + + es_evi = zebra_evpn_es_evi_find(es, zevpn); + if (!es_evi) { + es_evi = zebra_evpn_es_evi_new(es, zevpn); + if (!es_evi) + return; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("local es %s evi %d add", + es_evi->es->esi_str, es_evi->zevpn->vni); + es_evi->flags |= ZEBRA_EVPNES_EVI_LOCAL; + /* add to the EVPN's local list */ + listnode_init(&es_evi->l2vni_listnode, es_evi); + listnode_add(zevpn->local_es_evi_list, &es_evi->l2vni_listnode); + + zebra_evpn_es_evi_re_eval_send_to_client(es_evi); + } +} + +static void zebra_evpn_es_evi_show_entry(struct vty *vty, + struct zebra_evpn_es_evi *es_evi, json_object *json) +{ + char type_str[4]; + + if (json) { + /* XXX */ + } else { + type_str[0] = '\0'; + if (es_evi->flags & ZEBRA_EVPNES_EVI_LOCAL) + strlcat(type_str, "L", sizeof(type_str)); + + vty_out(vty, "%-8d %-30s %-4s\n", + es_evi->zevpn->vni, es_evi->es->esi_str, + type_str); + } +} + +static void zebra_evpn_es_evi_show_entry_detail(struct vty *vty, + struct zebra_evpn_es_evi *es_evi, json_object *json) +{ + char type_str[4]; + + if (json) { + /* XXX */ + } else { + type_str[0] = '\0'; + if (es_evi->flags & ZEBRA_EVPNES_EVI_LOCAL) + strlcat(type_str, "L", sizeof(type_str)); + + vty_out(vty, "VNI %d ESI: %s\n", + es_evi->zevpn->vni, es_evi->es->esi_str); + vty_out(vty, " Type: %s\n", type_str); + vty_out(vty, " Ready for BGP: %s\n", + (es_evi->flags & + ZEBRA_EVPNES_EVI_READY_FOR_BGP) ? + "yes" : "no"); + vty_out(vty, "\n"); + } +} + +static void zebra_evpn_es_evi_show_one_evpn(zebra_evpn_t *zevpn, + struct vty *vty, json_object *json, int detail) +{ + struct zebra_evpn_es_evi *es_evi; + + RB_FOREACH(es_evi, zebra_es_evi_rb_head, &zevpn->es_evi_rb_tree) { + if (detail) + zebra_evpn_es_evi_show_entry_detail(vty, es_evi, json); + else + zebra_evpn_es_evi_show_entry(vty, es_evi, json); + } +} + +struct evpn_mh_show_ctx { + struct vty *vty; + json_object *json; + int detail; +}; + +static void zebra_evpn_es_evi_show_one_evpn_hash_cb(struct hash_bucket *bucket, + void *ctxt) +{ + zebra_evpn_t *zevpn = (zebra_evpn_t *)bucket->data; + struct evpn_mh_show_ctx *wctx = (struct evpn_mh_show_ctx *)ctxt; + + zebra_evpn_es_evi_show_one_evpn(zevpn, wctx->vty, + wctx->json, wctx->detail); +} + +void zebra_evpn_es_evi_show(struct vty *vty, bool uj, int detail) +{ + json_object *json = NULL; + struct zebra_vrf *zvrf; + struct evpn_mh_show_ctx wctx; + + zvrf = zebra_vrf_get_evpn(); + + memset(&wctx, 0, sizeof(wctx)); + wctx.vty = vty; + wctx.json = json; + wctx.detail = detail; + + if (!detail && !json) { + vty_out(vty, "Type: L local, R remote\n"); + vty_out(vty, "%-8s %-30s %-4s\n", "VNI", "ESI", "Type"); + } + /* Display all L2-VNIs */ + hash_iterate(zvrf->evpn_table, zebra_evpn_es_evi_show_one_evpn_hash_cb, + &wctx); +} + +void zebra_evpn_es_evi_show_vni(struct vty *vty, bool uj, vni_t vni, int detail) +{ + json_object *json = NULL; + zebra_evpn_t *zevpn; + + zevpn = zebra_evpn_lookup(vni); + if (zevpn) { + if (!detail && !json) { + vty_out(vty, "Type: L local, R remote\n"); + vty_out(vty, "%-8s %-30s %-4s\n", "VNI", "ESI", "Type"); + } + } else { + if (!uj) + vty_out(vty, "VNI %d doesn't exist\n", vni); + } + zebra_evpn_es_evi_show_one_evpn(zevpn, vty, json, detail); +} + +/* Initialize the ES tables maintained per-L2_VNI */ +void zebra_evpn_evpn_es_init(zebra_evpn_t *zevpn) +{ + /* Initialize the ES-EVI RB tree */ + RB_INIT(zebra_es_evi_rb_head, &zevpn->es_evi_rb_tree); + + /* Initialize the local and remote ES lists maintained for quick + * walks by type + */ + zevpn->local_es_evi_list = list_new(); + listset_app_node_mem(zevpn->local_es_evi_list); +} + +/* Cleanup the ES info maintained per- EVPN */ +void zebra_evpn_evpn_es_cleanup(zebra_evpn_t *zevpn) +{ + struct zebra_evpn_es_evi *es_evi; + struct zebra_evpn_es_evi *es_evi_next; + + RB_FOREACH_SAFE(es_evi, zebra_es_evi_rb_head, + &zevpn->es_evi_rb_tree, es_evi_next) { + zebra_evpn_local_es_evi_do_del(es_evi); + } + + list_delete(&zevpn->local_es_evi_list); + zebra_evpn_es_clear_base_evpn(zevpn); +} + +/* called when the oper state or bridge membership changes for the + * vxlan device + */ +void zebra_evpn_update_all_es(zebra_evpn_t *zevpn) +{ + struct zebra_evpn_es_evi *es_evi; + struct listnode *node; + + /* the EVPN is now elgible as a base for EVPN-MH */ + if (zebra_evpn_send_to_client_ok(zevpn)) + zebra_evpn_es_set_base_evpn(zevpn); + else + zebra_evpn_es_clear_base_evpn(zevpn); + + for (ALL_LIST_ELEMENTS_RO(zevpn->local_es_evi_list, node, es_evi)) + zebra_evpn_es_evi_re_eval_send_to_client(es_evi); +} + +/*****************************************************************************/ +/* Access broadcast domains (BD) + * 1. These broadcast domains can be VLAN aware (in which case + * the key is VID) or VLAN unaware (in which case the key is + * 2. A VID-BD is created when a VLAN is associated with an access port or + * when the VLAN is associated with VXLAN_IF + * 3. A BD is translated into ES-EVI entries when a VNI is associated + * with the broadcast domain + */ +/* Hash key for VLAN based broadcast domains */ +static unsigned int zebra_evpn_acc_vl_hash_keymake(const void *p) +{ + const struct zebra_evpn_access_bd *acc_bd = p; + + return jhash_1word(acc_bd->vid, 0); +} + +/* Compare two VLAN based broadcast domains */ +static bool zebra_evpn_acc_vl_cmp(const void *p1, const void *p2) +{ + const struct zebra_evpn_access_bd *acc_bd1 = p1; + const struct zebra_evpn_access_bd *acc_bd2 = p2; + + if (acc_bd1 == NULL && acc_bd2 == NULL) + return true; + + if (acc_bd1 == NULL || acc_bd2 == NULL) + return false; + + return (acc_bd1->vid == acc_bd2->vid); +} + +/* Lookup VLAN based broadcast domain */ +static struct zebra_evpn_access_bd *zebra_evpn_acc_vl_find(vlanid_t vid) +{ + struct zebra_evpn_access_bd *acc_bd; + struct zebra_evpn_access_bd tmp; + + tmp.vid = vid; + acc_bd = hash_lookup(zmh_info->evpn_vlan_table, &tmp); + + return acc_bd; +} + +/* A new broadcast domain can be created when a VLAN member or VLAN<=>VxLAN_IF + * mapping is added. + */ +static struct zebra_evpn_access_bd *zebra_evpn_acc_vl_new(vlanid_t vid) +{ + struct zebra_evpn_access_bd *acc_bd; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("access vlan %d add", vid); + + acc_bd = XCALLOC(MTYPE_ZACC_BD, sizeof(struct zebra_evpn_access_bd)); + + acc_bd->vid = vid; + + /* Initialize the mbr list */ + acc_bd->mbr_zifs = list_new(); + + /* Add to hash */ + if (!hash_get(zmh_info->evpn_vlan_table, acc_bd, hash_alloc_intern)) { + XFREE(MTYPE_ZACC_BD, acc_bd); + return NULL; + } + + return acc_bd; +} + +/* Free VLAN based broadcast domain - + * This just frees appropriate memory, caller should have taken other + * needed actions. + */ +static void zebra_evpn_acc_vl_free(struct zebra_evpn_access_bd *acc_bd) +{ + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("access vlan %d del", acc_bd->vid); + + /* cleanup resources maintained against the ES */ + list_delete(&acc_bd->mbr_zifs); + + /* remove EVI from various tables */ + hash_release(zmh_info->evpn_vlan_table, acc_bd); + + XFREE(MTYPE_ZACC_BD, acc_bd); +} + +static void zebra_evpn_acc_vl_cleanup_all(struct hash_bucket *bucket, void *arg) +{ + struct zebra_evpn_access_bd *acc_bd = bucket->data; + + zebra_evpn_acc_vl_free(acc_bd); +} + +/* called when a bd mbr is removed or VxLAN_IF is diassociated from the access + * VLAN + */ +static void zebra_evpn_acc_bd_free_on_deref(struct zebra_evpn_access_bd *acc_bd) +{ + if (!list_isempty(acc_bd->mbr_zifs) || acc_bd->vxlan_zif) + return; + + /* if there are no references free the EVI */ + zebra_evpn_acc_vl_free(acc_bd); +} + +/* called when a EVPN-L2VNI is set or cleared against a BD */ +static void zebra_evpn_acc_bd_evpn_set(struct zebra_evpn_access_bd *acc_bd, + zebra_evpn_t *zevpn, zebra_evpn_t *old_zevpn) +{ + struct zebra_if *zif; + struct listnode *node; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("access vlan %d l2-vni %u set", + acc_bd->vid, zevpn ? zevpn->vni : 0); + + for (ALL_LIST_ELEMENTS_RO(acc_bd->mbr_zifs, node, zif)) { + if (!zif->es_info.es) + continue; + + if (zevpn) + zebra_evpn_local_es_evi_add(zif->es_info.es, zevpn); + else if (old_zevpn) + zebra_evpn_local_es_evi_del(zif->es_info.es, old_zevpn); + } +} + +/* handle VLAN->VxLAN_IF association */ +void zebra_evpn_vl_vxl_ref(uint16_t vid, struct zebra_if *vxlan_zif) +{ + struct zebra_evpn_access_bd *acc_bd; + struct zebra_if *old_vxlan_zif; + zebra_evpn_t *old_zevpn; + + if (!vid) + return; + + acc_bd = zebra_evpn_acc_vl_find(vid); + if (!acc_bd) + acc_bd = zebra_evpn_acc_vl_new(vid); + + old_vxlan_zif = acc_bd->vxlan_zif; + acc_bd->vxlan_zif = vxlan_zif; + if (vxlan_zif == old_vxlan_zif) + return; + + old_zevpn = acc_bd->zevpn; + acc_bd->zevpn = zebra_evpn_lookup(vxlan_zif->l2info.vxl.vni); + if (acc_bd->zevpn == old_zevpn) + return; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("access vlan %d vni %u ref", + acc_bd->vid, vxlan_zif->l2info.vxl.vni); + + if (old_zevpn) + zebra_evpn_acc_bd_evpn_set(acc_bd, NULL, old_zevpn); + + if (acc_bd->zevpn) + zebra_evpn_acc_bd_evpn_set(acc_bd, acc_bd->zevpn, NULL); +} + +/* handle VLAN->VxLAN_IF deref */ +void zebra_evpn_vl_vxl_deref(uint16_t vid, struct zebra_if *vxlan_zif) +{ + struct zebra_evpn_access_bd *acc_bd; + + if (!vid) + return; + + acc_bd = zebra_evpn_acc_vl_find(vid); + if (!acc_bd) + return; + + /* clear vxlan_if only if it matches */ + if (acc_bd->vxlan_zif != vxlan_zif) + return; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("access vlan %d vni %u deref", + acc_bd->vid, vxlan_zif->l2info.vxl.vni); + + if (acc_bd->zevpn) + zebra_evpn_acc_bd_evpn_set(acc_bd, NULL, acc_bd->zevpn); + + acc_bd->zevpn = NULL; + acc_bd->vxlan_zif = NULL; + + /* if there are no other references the access_bd can be freed */ + zebra_evpn_acc_bd_free_on_deref(acc_bd); +} + +/* handle EVPN add/del */ +void zebra_evpn_vxl_evpn_set(struct zebra_if *zif, zebra_evpn_t *zevpn, + bool set) +{ + struct zebra_l2info_vxlan *vxl; + struct zebra_evpn_access_bd *acc_bd; + + if (!zif) + return; + + /* locate access_bd associated with the vxlan device */ + vxl = &zif->l2info.vxl; + acc_bd = zebra_evpn_acc_vl_find(vxl->access_vlan); + if (!acc_bd) + return; + + if (set) { + zebra_evpn_es_set_base_evpn(zevpn); + if (acc_bd->zevpn != zevpn) { + acc_bd->zevpn = zevpn; + zebra_evpn_acc_bd_evpn_set(acc_bd, zevpn, NULL); + } + } else { + if (acc_bd->zevpn) { + zebra_evpn_t *old_zevpn = acc_bd->zevpn; + acc_bd->zevpn = NULL; + zebra_evpn_acc_bd_evpn_set(acc_bd, NULL, old_zevpn); + } + } +} + +/* handle addition of new VLAN members */ +void zebra_evpn_vl_mbr_ref(uint16_t vid, struct zebra_if *zif) +{ + struct zebra_evpn_access_bd *acc_bd; + + if (!vid) + return; + + acc_bd = zebra_evpn_acc_vl_find(vid); + if (!acc_bd) + acc_bd = zebra_evpn_acc_vl_new(vid); + + if (listnode_lookup(acc_bd->mbr_zifs, zif)) + return; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("access vlan %d mbr %s ref", + vid, zif->ifp->name); + + listnode_add(acc_bd->mbr_zifs, zif); + if (acc_bd->zevpn && zif->es_info.es) + zebra_evpn_local_es_evi_add(zif->es_info.es, acc_bd->zevpn); +} + +/* handle deletion of VLAN members */ +void zebra_evpn_vl_mbr_deref(uint16_t vid, struct zebra_if *zif) +{ + struct zebra_evpn_access_bd *acc_bd; + struct listnode *node; + + if (!vid) + return; + + acc_bd = zebra_evpn_acc_vl_find(vid); + if (!acc_bd) + return; + + node = listnode_lookup(acc_bd->mbr_zifs, zif); + if (!node) + return; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("access vlan %d mbr %s deref", + vid, zif->ifp->name); + + list_delete_node(acc_bd->mbr_zifs, node); + + if (acc_bd->zevpn && zif->es_info.es) + zebra_evpn_local_es_evi_del(zif->es_info.es, acc_bd->zevpn); + + /* if there are no other references the access_bd can be freed */ + zebra_evpn_acc_bd_free_on_deref(acc_bd); +} + +static void zebra_evpn_acc_vl_show_entry_detail(struct vty *vty, + struct zebra_evpn_access_bd *acc_bd, json_object *json) +{ + struct zebra_if *zif; + struct listnode *node; + + if (json) { + /* XXX */ + } else { + vty_out(vty, "VLAN: %u\n", acc_bd->vid); + vty_out(vty, " VxLAN Interface: %s\n", + acc_bd->vxlan_zif ? + acc_bd->vxlan_zif->ifp->name : "-"); + vty_out(vty, " L2-VNI: %d\n", + acc_bd->zevpn ? acc_bd->zevpn->vni : 0); + vty_out(vty, " Member Count: %d\n", + listcount(acc_bd->mbr_zifs)); + vty_out(vty, " Members: \n"); + for (ALL_LIST_ELEMENTS_RO(acc_bd->mbr_zifs, node, zif)) + vty_out(vty, " %s\n", zif->ifp->name); + vty_out(vty, "\n"); + } +} + +static void zebra_evpn_acc_vl_show_entry(struct vty *vty, + struct zebra_evpn_access_bd *acc_bd, json_object *json) +{ + if (!json) + vty_out(vty, "%-5u %21s %-8d %u\n", + acc_bd->vid, + acc_bd->vxlan_zif ? + acc_bd->vxlan_zif->ifp->name : "-", + acc_bd->zevpn ? acc_bd->zevpn->vni : 0, + listcount(acc_bd->mbr_zifs)); +} + +static void zebra_evpn_acc_vl_show_hash(struct hash_bucket *bucket, void *ctxt) +{ + struct evpn_mh_show_ctx *wctx = ctxt; + struct zebra_evpn_access_bd *acc_bd = bucket->data; + + if (wctx->detail) + zebra_evpn_acc_vl_show_entry_detail(wctx->vty, + acc_bd, wctx->json); + else + zebra_evpn_acc_vl_show_entry(wctx->vty, + acc_bd, wctx->json); +} + +void zebra_evpn_acc_vl_show(struct vty *vty, bool uj) +{ + json_object *json = NULL; + struct evpn_mh_show_ctx wctx; + + memset(&wctx, 0, sizeof(wctx)); + wctx.vty = vty; + wctx.json = json; + wctx.detail = false; + + if (!json) + vty_out(vty, "%-5s %21s %-8s %s\n", + "VLAN", "VxLAN-IF", "L2-VNI", "# Members"); + + hash_iterate(zmh_info->evpn_vlan_table, zebra_evpn_acc_vl_show_hash, + &wctx); +} + +void zebra_evpn_acc_vl_show_detail(struct vty *vty, bool uj) +{ + json_object *json = NULL; + struct evpn_mh_show_ctx wctx; + + memset(&wctx, 0, sizeof(wctx)); + wctx.vty = vty; + wctx.json = json; + wctx.detail = true; + + hash_iterate(zmh_info->evpn_vlan_table, zebra_evpn_acc_vl_show_hash, + &wctx); +} + +void zebra_evpn_acc_vl_show_vid(struct vty *vty, bool uj, vlanid_t vid) +{ + json_object *json = NULL; + struct zebra_evpn_access_bd *acc_bd; + + acc_bd = zebra_evpn_acc_vl_find(vid); + if (!acc_bd) { + if (!json) { + vty_out(vty, "VLAN %u not present\n", vid); + return; + } + } + zebra_evpn_acc_vl_show_entry_detail(vty, acc_bd, json); +} + +/* Initialize VLAN member bitmap on an interface. Although VLAN membership + * is independent of EVPN we only process it if its of interest to EVPN-MH + * i.e. on access ports that can be setup as Ethernet Segments. And that is + * intended as an optimization. + */ +void zebra_evpn_if_init(struct zebra_if *zif) +{ + if (!zebra_evpn_is_if_es_capable(zif)) + return; + + if (!bf_is_inited(zif->vlan_bitmap)) + bf_init(zif->vlan_bitmap, IF_VLAN_BITMAP_MAX); + + /* if an es_id and sysmac are already present against the interface + * activate it + */ + zebra_evpn_local_es_update(zif, zif->es_info.lid, &zif->es_info.sysmac); +} + +/* handle deletion of an access port by removing it from all associated + * broadcast domains. + */ +void zebra_evpn_if_cleanup(struct zebra_if *zif) +{ + vlanid_t vid; + + if (!bf_is_inited(zif->vlan_bitmap)) + return; + + bf_for_each_set_bit(zif->vlan_bitmap, vid, IF_VLAN_BITMAP_MAX) { + zebra_evpn_vl_mbr_deref(vid, zif); + } + + bf_free(zif->vlan_bitmap); + + /* Delete associated Ethernet Segment */ + if (zif->es_info.es) + zebra_evpn_local_es_del(zif->es_info.es); +} + +/***************************************************************************** + * L2 NH/NHG Management + * A L2 NH entry is programmed in the kernel for every ES-VTEP entry. This + * NH is then added to the L2-ECMP-NHG associated with the ES. + */ +static uint32_t zebra_evpn_nhid_alloc(bool is_nhg) +{ + uint32_t id; + int type; + + bf_assign_index(zmh_info->nh_id_bitmap, id); + + if (!id) + return 0; + + type = is_nhg ? EVPN_NHG_ID_TYPE_BIT : EVPN_NH_ID_TYPE_BIT; + return (id | type); +} + +static void zebra_evpn_nhid_free(uint32_t nh_id) +{ + uint32_t id = (nh_id & EVPN_NH_ID_VAL_MASK); + + if (!id) + return; + + bf_release_index(zmh_info->nh_id_bitmap, id); +} + +/* The MAC ECMP group is activated on the first VTEP */ +static void zebra_evpn_nhg_update(struct zebra_evpn_es *es) +{ + uint32_t nh_cnt = 0; + struct nh_grp nh_ids[ES_VTEP_MAX_CNT]; + struct zebra_evpn_es_vtep *es_vtep; + struct listnode *node; + + if (!es->nhg_id) + return; + + for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { + if (!es_vtep->nh_id) + continue; + + if (nh_cnt >= ES_VTEP_MAX_CNT) + break; + + memset(&nh_ids[nh_cnt], 0, sizeof(struct nh_grp)); + nh_ids[nh_cnt].id = es_vtep->nh_id; + ++nh_cnt; + } + + if (nh_cnt) { + if (IS_ZEBRA_DEBUG_EVPN_MH_NH) { + char nh_str[ES_VTEP_LIST_STR_SZ]; + uint32_t i; + char nh_buf[16]; + + nh_str[0] = '\0'; + for (i = 0; i < nh_cnt; ++i) { + snprintf(nh_buf, sizeof(nh_buf), "%u ", + nh_ids[i].id); + strlcat(nh_str, nh_buf, sizeof(nh_str)); + } + zlog_debug("es %s nhg 0x%x add %s", + es->esi_str, es->nhg_id, nh_str); + } + + es->flags |= ZEBRA_EVPNES_NHG_ACTIVE; + kernel_upd_mac_nhg(es->nhg_id, nh_cnt, nh_ids); + } else { + if (es->flags & ZEBRA_EVPNES_NHG_ACTIVE) { + if (IS_ZEBRA_DEBUG_EVPN_MH_NH) + zlog_debug("es %s nhg 0x%x del", + es->esi_str, es->nhg_id); + es->flags &= ~ZEBRA_EVPNES_NHG_ACTIVE; + kernel_del_mac_nhg(es->nhg_id); + } + } + + /* XXX - update remote macs associated with the ES */ +} + +static void zebra_evpn_nh_add(struct zebra_evpn_es_vtep *es_vtep) +{ + if (es_vtep->nh_id) + return; + + es_vtep->nh_id = zebra_evpn_nhid_alloc(false); + + if (!es_vtep->nh_id) + return; + + if (IS_ZEBRA_DEBUG_EVPN_MH_NH) + zlog_debug("es %s vtep %s nh 0x%x add", + es_vtep->es->esi_str, + inet_ntoa(es_vtep->vtep_ip), es_vtep->nh_id); + /* install the NH */ + kernel_upd_mac_nh(es_vtep->nh_id, es_vtep->vtep_ip); + /* add the NH to the parent NHG */ + zebra_evpn_nhg_update(es_vtep->es); +} + +static void zebra_evpn_nh_del(struct zebra_evpn_es_vtep *es_vtep) +{ + uint32_t nh_id; + + if (!es_vtep->nh_id) + return; + + if (IS_ZEBRA_DEBUG_EVPN_MH_NH) + zlog_debug("es %s vtep %s nh 0x%x del", + es_vtep->es->esi_str, + inet_ntoa(es_vtep->vtep_ip), es_vtep->nh_id); + + nh_id = es_vtep->nh_id; + es_vtep->nh_id = 0; + + /* remove the NH from the parent NHG */ + zebra_evpn_nhg_update(es_vtep->es); + /* uninstall the NH */ + kernel_del_mac_nh(nh_id); + zebra_evpn_nhid_free(nh_id); + +} + +/*****************************************************************************/ +/* Ethernet Segment Management + * 1. Ethernet Segment is a collection of links attached to the same + * server (MHD) or switch (MHN) + * 2. An Ethernet Segment can span multiple PEs and is identified by the + * 10-byte ES-ID. + * 3. Zebra manages the local ESI configuration. + * 4. It also maintains the aliasing that maps an ESI (local or remote) + * to one or more PEs/VTEPs. + * 5. remote ESs are added by BGP (on rxing EAD Type-1 routes) + */ +/* A list of remote VTEPs is maintained for each ES. This list includes - + * 1. VTEPs for which we have imported the ESR i.e. ES-peers + * 2. VTEPs that have an "active" ES-EVI VTEP i.e. EAD-per-ES and EAD-per-EVI + * have been imported into one or more EVPNs + */ +static int zebra_evpn_es_vtep_cmp(void *p1, void *p2) +{ + const struct zebra_evpn_es_vtep *es_vtep1 = p1; + const struct zebra_evpn_es_vtep *es_vtep2 = p2; + + return es_vtep1->vtep_ip.s_addr - es_vtep2->vtep_ip.s_addr; +} + +static struct zebra_evpn_es_vtep *zebra_evpn_es_vtep_new( + struct zebra_evpn_es *es, struct in_addr vtep_ip) +{ + struct zebra_evpn_es_vtep *es_vtep; + + es_vtep = XCALLOC(MTYPE_ZES_VTEP, sizeof(*es_vtep)); + + es_vtep->es = es; + es_vtep->vtep_ip.s_addr = vtep_ip.s_addr; + listnode_init(&es_vtep->es_listnode, es_vtep); + listnode_add_sort(es->es_vtep_list, &es_vtep->es_listnode); + + return es_vtep; +} + +static void zebra_evpn_es_vtep_free(struct zebra_evpn_es_vtep *es_vtep) +{ + struct zebra_evpn_es *es = es_vtep->es; + + list_delete_node(es->es_vtep_list, &es_vtep->es_listnode); + /* update the L2-NHG associated with the ES */ + zebra_evpn_nh_del(es_vtep); + XFREE(MTYPE_ZES_VTEP, es_vtep); +} + + +/* check if VTEP is already part of the list */ +static struct zebra_evpn_es_vtep *zebra_evpn_es_vtep_find( + struct zebra_evpn_es *es, struct in_addr vtep_ip) +{ + struct listnode *node = NULL; + struct zebra_evpn_es_vtep *es_vtep; + + for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, es_vtep)) { + if (es_vtep->vtep_ip.s_addr == vtep_ip.s_addr) + return es_vtep; + } + return NULL; +} + +static void zebra_evpn_es_vtep_add(struct zebra_evpn_es *es, + struct in_addr vtep_ip) +{ + struct zebra_evpn_es_vtep *es_vtep; + + es_vtep = zebra_evpn_es_vtep_find(es, vtep_ip); + + if (!es_vtep) { + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("es %s vtep %s add", + es->esi_str, inet_ntoa(vtep_ip)); + es_vtep = zebra_evpn_es_vtep_new(es, vtep_ip); + /* update the L2-NHG associated with the ES */ + zebra_evpn_nh_add(es_vtep); + } +} + +static void zebra_evpn_es_vtep_del(struct zebra_evpn_es *es, + struct in_addr vtep_ip) +{ + struct zebra_evpn_es_vtep *es_vtep; + + es_vtep = zebra_evpn_es_vtep_find(es, vtep_ip); + + if (es_vtep) { + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("es %s vtep %s del", + es->esi_str, inet_ntoa(vtep_ip)); + zebra_evpn_es_vtep_free(es_vtep); + } +} + +/* compare ES-IDs for the global ES RB tree */ +static int zebra_es_rb_cmp(const struct zebra_evpn_es *es1, + const struct zebra_evpn_es *es2) +{ + return memcmp(&es1->esi, &es2->esi, ESI_BYTES); +} +RB_GENERATE(zebra_es_rb_head, zebra_evpn_es, rb_node, zebra_es_rb_cmp); + +/* Lookup ES */ +struct zebra_evpn_es *zebra_evpn_es_find(esi_t *esi) +{ + struct zebra_evpn_es tmp; + + memcpy(&tmp.esi, esi, sizeof(esi_t)); + return RB_FIND(zebra_es_rb_head, &zmh_info->es_rb_tree, &tmp); +} + +/* A new local es is created when a local-es-id and sysmac is configured + * against an interface. + */ +static struct zebra_evpn_es *zebra_evpn_es_new(esi_t *esi) +{ + struct zebra_evpn_es *es; + + es = XCALLOC(MTYPE_ZES, sizeof(struct zebra_evpn_es)); + + /* fill in ESI */ + memcpy(&es->esi, esi, sizeof(esi_t)); + esi_to_str(&es->esi, es->esi_str, sizeof(es->esi_str)); + + /* Add to rb_tree */ + if (RB_INSERT(zebra_es_rb_head, &zmh_info->es_rb_tree, es)) { + XFREE(MTYPE_ZES, es); + return NULL; + } + + /* Initialise the ES-EVI list */ + es->es_evi_list = list_new(); + listset_app_node_mem(es->es_evi_list); + + /* Initialise the VTEP list */ + es->es_vtep_list = list_new(); + listset_app_node_mem(es->es_vtep_list); + es->es_vtep_list->cmp = zebra_evpn_es_vtep_cmp; + + /* mac entries associated with the ES */ + es->mac_list = list_new(); + listset_app_node_mem(es->mac_list); + + /* reserve a NHG */ + es->nhg_id = zebra_evpn_nhid_alloc(true); + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("es %s nhg 0x%x new", es->esi_str, es->nhg_id); + + return es; +} + +/* Free a given ES - + * This just frees appropriate memory, caller should have taken other + * needed actions. + */ +static struct zebra_evpn_es *zebra_evpn_es_free(struct zebra_evpn_es *es) +{ + /* If the ES has a local or remote reference it cannot be freed. + * Free is also prevented if there are MAC entries referencing + * it. + */ + if ((es->flags & (ZEBRA_EVPNES_LOCAL | ZEBRA_EVPNES_REMOTE)) || + listcount(es->mac_list)) + return es; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("es %s free", es->esi_str); + + /* If the NHG is still installed uninstall it and free the id */ + if (es->flags & ZEBRA_EVPNES_NHG_ACTIVE) { + es->flags &= ~ZEBRA_EVPNES_NHG_ACTIVE; + kernel_del_mac_nhg(es->nhg_id); + } + zebra_evpn_nhid_free(es->nhg_id); + + /* cleanup resources maintained against the ES */ + list_delete(&es->es_evi_list); + list_delete(&es->es_vtep_list); + list_delete(&es->mac_list); + + /* remove from the VNI-ESI rb tree */ + RB_REMOVE(zebra_es_rb_head, &zmh_info->es_rb_tree, es); + + XFREE(MTYPE_ZES, es); + + return NULL; +} + +/* Inform BGP about local ES addition */ +static int zebra_evpn_es_send_add_to_client(struct zebra_evpn_es *es) +{ + struct zserv *client; + struct stream *s; + uint8_t oper_up; + + client = zserv_find_client(ZEBRA_ROUTE_BGP, 0); + /* BGP may not be running. */ + if (!client) + return 0; + + s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, ZEBRA_LOCAL_ES_ADD, zebra_vrf_get_evpn_id()); + stream_put(s, &es->esi, sizeof(esi_t)); + stream_put_ipv4(s, zmh_info->es_originator_ip.s_addr); + oper_up = !!(es->flags & ZEBRA_EVPNES_OPER_UP); + stream_putc(s, oper_up); + + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("send add local es %s %s to %s", + es->esi_str, + inet_ntoa(zmh_info->es_originator_ip), + zebra_route_string(client->proto)); + + client->local_es_add_cnt++; + return zserv_send_message(client, s); +} + +/* Inform BGP about local ES deletion */ +static int zebra_evpn_es_send_del_to_client(struct zebra_evpn_es *es) +{ + struct zserv *client; + struct stream *s; + + client = zserv_find_client(ZEBRA_ROUTE_BGP, 0); + /* BGP may not be running. */ + if (!client) + return 0; + + s = stream_new(ZEBRA_MAX_PACKET_SIZ); + stream_reset(s); + + zclient_create_header(s, ZEBRA_LOCAL_ES_DEL, zebra_vrf_get_evpn_id()); + stream_put(s, &es->esi, sizeof(esi_t)); + + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("send del local es %s to %s", es->esi_str, + zebra_route_string(client->proto)); + + client->local_es_del_cnt++; + return zserv_send_message(client, s); +} + +/* XXX - call any time ZEBRA_EVPNES_LOCAL gets set or cleared */ +static void zebra_evpn_es_re_eval_send_to_client(struct zebra_evpn_es *es, + bool es_evi_re_reval) +{ + bool old_ready; + bool new_ready; + struct listnode *node; + struct zebra_evpn_es_evi *es_evi; + + old_ready = !!(es->flags & ZEBRA_EVPNES_READY_FOR_BGP); + + if ((es->flags & ZEBRA_EVPNES_LOCAL) && + zmh_info->es_originator_ip.s_addr) + es->flags |= ZEBRA_EVPNES_READY_FOR_BGP; + else + es->flags &= ~ZEBRA_EVPNES_READY_FOR_BGP; + + new_ready = !!(es->flags & ZEBRA_EVPNES_READY_FOR_BGP); + if (old_ready == new_ready) + return; + + if (new_ready) + zebra_evpn_es_send_add_to_client(es); + else + zebra_evpn_es_send_del_to_client(es); + + /* re-eval associated EVIs */ + if (es_evi_re_reval) { + for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, node, es_evi)) { + if (!(es_evi->flags & ZEBRA_EVPNES_EVI_LOCAL)) + continue; + zebra_evpn_es_evi_re_eval_send_to_client(es_evi); + } + } +} + +void zebra_evpn_es_send_all_to_client(bool add) +{ + struct listnode *es_node; + struct listnode *evi_node; + struct zebra_evpn_es *es; + struct zebra_evpn_es_evi *es_evi; + + if (!zmh_info) + return; + + for (ALL_LIST_ELEMENTS_RO(zmh_info->local_es_list, es_node, es)) { + if (es->flags & ZEBRA_EVPNES_READY_FOR_BGP) { + if (add) + zebra_evpn_es_send_add_to_client(es); + for (ALL_LIST_ELEMENTS_RO(es->es_evi_list, + evi_node, es_evi)) { + if (!(es_evi->flags & + ZEBRA_EVPNES_EVI_READY_FOR_BGP)) + continue; + + if (add) + zebra_evpn_es_evi_send_to_client( + es, es_evi->zevpn, + true /* add */); + else + zebra_evpn_es_evi_send_to_client( + es, es_evi->zevpn, + false /* add */); + } + if (!add) + zebra_evpn_es_send_del_to_client(es); + } + } +} + +/* walk the vlan bitmap associated with the zif and create or delete + * es_evis for all vlans associated with a VNI. + * XXX: This API is really expensive. optimize later if possible. + */ +static void zebra_evpn_es_setup_evis(struct zebra_evpn_es *es) +{ + struct zebra_if *zif = es->zif; + uint16_t vid; + struct zebra_evpn_access_bd *acc_bd; + + + bf_for_each_set_bit(zif->vlan_bitmap, vid, IF_VLAN_BITMAP_MAX) { + acc_bd = zebra_evpn_acc_vl_find(vid); + if (acc_bd->zevpn) + zebra_evpn_local_es_evi_add(es, acc_bd->zevpn); + } +} + +static void zebra_evpn_es_local_mac_update(struct zebra_evpn_es *es, + bool force_clear_static) +{ + zebra_mac_t *mac; + struct listnode *node; + + for (ALL_LIST_ELEMENTS_RO(es->mac_list, node, mac)) { + if (CHECK_FLAG(mac->flags, ZEBRA_MAC_ES_PEER_ACTIVE)) { + zebra_evpn_sync_mac_dp_install( + mac, false /* set_inactive */, + force_clear_static, __func__); + } + } +} + +static void zebra_evpn_es_local_info_set(struct zebra_evpn_es *es, + struct zebra_if *zif) +{ + if (es->flags & ZEBRA_EVPNES_LOCAL) + return; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("local es %s add; nhg 0x%x if %s", + es->esi_str, es->nhg_id, zif->ifp->name); + + es->flags |= ZEBRA_EVPNES_LOCAL; + listnode_init(&es->local_es_listnode, es); + listnode_add(zmh_info->local_es_list, &es->local_es_listnode); + + /* attach es to interface */ + zif->es_info.es = es; + + /* attach interface to es */ + es->zif = zif; + if (if_is_operative(zif->ifp)) + es->flags |= ZEBRA_EVPNES_OPER_UP; + + /* setup base-vni if one doesn't already exist; the ES will get sent + * to BGP as a part of that process + */ + if (!zmh_info->es_base_evpn) + zebra_evpn_es_get_one_base_evpn(); + else + /* send notification to bgp */ + zebra_evpn_es_re_eval_send_to_client(es, + false /* es_evi_re_reval */); + + /* Setup ES-EVIs for all VxLAN stretched VLANs associated with + * the zif + */ + zebra_evpn_es_setup_evis(es); + /* if there any local macs referring to the ES as dest we + * need to set the static reference on them if the MAC is + * synced from an ES peer + */ + zebra_evpn_es_local_mac_update(es, + false /* force_clear_static */); +} + +static void zebra_evpn_es_local_info_clear(struct zebra_evpn_es *es) +{ + struct zebra_if *zif; + + if (!(es->flags & ZEBRA_EVPNES_LOCAL)) + return; + + es->flags &= ~ZEBRA_EVPNES_LOCAL; + /* if there any local macs referring to the ES as dest we + * need to clear the static reference on them + */ + zebra_evpn_es_local_mac_update(es, + true /* force_clear_static */); + + /* clear the es from the parent interface */ + zif = es->zif; + zif->es_info.es = NULL; + es->zif = NULL; + + /* remove from the ES list */ + list_delete_node(zmh_info->local_es_list, &es->local_es_listnode); + + /* free up the ES if there is no remote reference */ + zebra_evpn_es_free(es); +} + +/* Delete an ethernet segment and inform BGP */ +static void zebra_evpn_local_es_del(struct zebra_evpn_es *es) +{ + struct zebra_evpn_es_evi *es_evi; + struct listnode *node = NULL; + struct listnode *nnode = NULL; + struct zebra_if *zif; + + if (!CHECK_FLAG(es->flags, ZEBRA_EVPNES_LOCAL)) + return; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) { + zif = es->zif; + zlog_debug("local es %s del; nhg 0x%x if %s", + es->esi_str, es->nhg_id, + zif ? zif->ifp->name : "-"); + } + + /* remove all ES-EVIs associated with the ES */ + for (ALL_LIST_ELEMENTS(es->es_evi_list, node, nnode, es_evi)) + zebra_evpn_local_es_evi_do_del(es_evi); + + /* send a del if the ES had been sent to BGP earlier */ + if (es->flags & ZEBRA_EVPNES_READY_FOR_BGP) + zebra_evpn_es_send_del_to_client(es); + + zebra_evpn_es_local_info_clear(es); +} + +/* eval remote info associated with the ES */ +static void zebra_evpn_es_remote_info_re_eval(struct zebra_evpn_es *es) +{ + /* if there are remote VTEPs the ES-EVI is classified as "remote" */ + if (listcount(es->es_vtep_list)) { + if (!(es->flags & ZEBRA_EVPNES_REMOTE)) { + es->flags |= ZEBRA_EVPNES_REMOTE; + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("remote es %s add; nhg 0x%x", + es->esi_str, es->nhg_id); + } + } else { + if (es->flags & ZEBRA_EVPNES_REMOTE) { + es->flags &= ~ZEBRA_EVPNES_REMOTE; + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("remote es %s del; nhg 0x%x", + es->esi_str, es->nhg_id); + zebra_evpn_es_free(es); + } + } +} + +/* A new local es is created when a local-es-id and sysmac is configured + * against an interface. + */ +static int zebra_evpn_local_es_update(struct zebra_if *zif, uint32_t lid, + struct ethaddr *sysmac) +{ + struct zebra_evpn_es *old_es = zif->es_info.es; + struct zebra_evpn_es *es; + esi_t esi; + int offset = 0; + int field_bytes = 0; + + /* Complete config of the ES-ID bootstraps the ES */ + if (!lid || is_zero_mac(sysmac)) { + /* if in ES is attached to zif delete it */ + if (old_es) + zebra_evpn_local_es_del(old_es); + return 0; + } + + /* build 10-byte type-3-ESI - + * Type(1-byte), MAC(6-bytes), ES-LID (3-bytes) + */ + field_bytes = 1; + esi.val[offset] = ESI_TYPE_MAC; + offset += field_bytes; + + field_bytes = ETH_ALEN; + memcpy(&esi.val[offset], (uint8_t *)sysmac, field_bytes); + offset += field_bytes; + + esi.val[offset++] = (uint8_t)(lid >> 16); + esi.val[offset++] = (uint8_t)(lid >> 8); + esi.val[offset++] = (uint8_t)lid; + + if (old_es && !memcmp(&old_es->esi, &esi, sizeof(esi_t))) + /* dup - nothing to be done */ + return 0; + + /* release the old_es against the zif */ + if (old_es) + zebra_evpn_local_es_del(old_es); + + es = zebra_evpn_es_find(&esi); + if (es) { + /* if it exists against another interface flag an error */ + if (es->zif && es->zif != zif) + return -1; + } else { + /* create new es */ + es = zebra_evpn_es_new(&esi); + } + + zebra_evpn_es_local_info_set(es, zif); + + return 0; +} + +static int zebra_evpn_remote_es_del(esi_t *esi, struct in_addr vtep_ip) +{ + char buf[ESI_STR_LEN]; + struct zebra_evpn_es *es; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("remote es %s vtep %s del", + esi_to_str(esi, buf, sizeof(buf)), + inet_ntoa(vtep_ip)); + + es = zebra_evpn_es_find(esi); + if (!es) { + /* XXX - error log */ + return -1; + } + + zebra_evpn_es_vtep_del(es, vtep_ip); + zebra_evpn_es_remote_info_re_eval(es); + + return 0; +} + +/* force delete a remote ES on the way down */ +static void zebra_evpn_remote_es_flush(struct zebra_evpn_es *es) +{ + struct zebra_evpn_es_vtep *es_vtep; + struct listnode *node; + struct listnode *nnode; + + for (ALL_LIST_ELEMENTS(es->es_vtep_list, node, nnode, es_vtep)) { + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("es %s vtep %s flush", + es->esi_str, + inet_ntoa(es_vtep->vtep_ip)); + zebra_evpn_es_vtep_free(es_vtep); + zebra_evpn_es_remote_info_re_eval(es); + } +} + +static int zebra_evpn_remote_es_add(esi_t *esi, struct in_addr vtep_ip) +{ + char buf[ESI_STR_LEN]; + struct zebra_evpn_es *es; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("remote es %s vtep %s add", + esi_to_str(esi, buf, sizeof(buf)), + inet_ntoa(vtep_ip)); + + es = zebra_evpn_es_find(esi); + if (!es) { + es = zebra_evpn_es_new(esi); + if (!es) { + /* XXX - error log */ + return -1; + } + } + + zebra_evpn_es_vtep_add(es, vtep_ip); + zebra_evpn_es_remote_info_re_eval(es); + + return 0; +} + +void zebra_evpn_proc_remote_es(ZAPI_HANDLER_ARGS) +{ + struct stream *s; + struct in_addr vtep_ip; + esi_t esi; + + if (!is_evpn_enabled()) { + zlog_debug( + "%s: EVPN not enabled yet we received a es_add zapi call", + __PRETTY_FUNCTION__); + return; + } + + memset(&esi, 0, sizeof(esi_t)); + s = msg; + + stream_get(&esi, s, sizeof(esi_t)); + vtep_ip.s_addr = stream_get_ipv4(s); + + if (hdr->command == ZEBRA_REMOTE_ES_VTEP_ADD) + zebra_evpn_remote_es_add(&esi, vtep_ip); + else + zebra_evpn_remote_es_del(&esi, vtep_ip); +} + +void zebra_evpn_es_mac_deref_entry(zebra_mac_t *mac) +{ + struct zebra_evpn_es *es = mac->es; + + mac->es = NULL; + if (!es) + return; + + list_delete_node(es->mac_list, &mac->es_listnode); + if (!listcount(es->mac_list)) + zebra_evpn_es_free(es); +} + +/* Associate a MAC entry with a local or remote ES. Returns false if there + * was no ES change. + */ +bool zebra_evpn_es_mac_ref_entry(zebra_mac_t *mac, struct zebra_evpn_es *es) +{ + if (mac->es == es) + return false; + + if (mac->es) + zebra_evpn_es_mac_deref_entry(mac); + + if (!es) + return true; + + mac->es = es; + listnode_init(&mac->es_listnode, mac); + listnode_add(es->mac_list, &mac->es_listnode); + + return true; +} + +bool zebra_evpn_es_mac_ref(zebra_mac_t *mac, esi_t *esi) +{ + struct zebra_evpn_es *es; + + es = zebra_evpn_es_find(esi); + if (!es) { + es = zebra_evpn_es_new(esi); + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("auto es %s add on mac ref", es->esi_str); + } + + return zebra_evpn_es_mac_ref_entry(mac, es); +} + +/* Inform BGP about local ES-EVI add or del */ +static int zebra_evpn_es_evi_send_to_client(struct zebra_evpn_es *es, + zebra_evpn_t *zevpn, bool add) +{ + struct zserv *client; + struct stream *s; + + client = zserv_find_client(ZEBRA_ROUTE_BGP, 0); + /* BGP may not be running. */ + if (!client) + return 0; + + s = stream_new(ZEBRA_MAX_PACKET_SIZ); + + zclient_create_header(s, + add ? ZEBRA_LOCAL_ES_EVI_ADD : ZEBRA_LOCAL_ES_EVI_DEL, + zebra_vrf_get_evpn_id()); + stream_put(s, &es->esi, sizeof(esi_t)); + stream_putl(s, zevpn->vni); + + /* Write packet size. */ + stream_putw_at(s, 0, stream_get_endp(s)); + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("send %s local es %s evi %u to %s", + add ? "add" : "del", + es->esi_str, zevpn->vni, + zebra_route_string(client->proto)); + + client->local_es_add_cnt++; + return zserv_send_message(client, s); +} + +/* sysmac part of a local ESI has changed */ +static int zebra_evpn_es_sys_mac_update(struct zebra_if *zif, + struct ethaddr *sysmac) +{ + int rv; + + rv = zebra_evpn_local_es_update(zif, zif->es_info.lid, sysmac); + if (!rv) + memcpy(&zif->es_info.sysmac, sysmac, sizeof(struct ethaddr)); + + return rv; +} + +/* local-ID part of ESI has changed */ +static int zebra_evpn_es_lid_update(struct zebra_if *zif, uint32_t lid) +{ + int rv; + + rv = zebra_evpn_local_es_update(zif, lid, &zif->es_info.sysmac); + if (!rv) + zif->es_info.lid = lid; + + return rv; +} + +void zebra_evpn_es_cleanup(void) +{ + struct zebra_evpn_es *es; + struct zebra_evpn_es *es_next; + + RB_FOREACH_SAFE(es, zebra_es_rb_head, + &zmh_info->es_rb_tree, es_next) { + zebra_evpn_local_es_del(es); + zebra_evpn_remote_es_flush(es); + } +} + +/* Only certain types of access ports can be setup as an Ethernet Segment */ +bool zebra_evpn_is_if_es_capable(struct zebra_if *zif) +{ + if (zif->zif_type == ZEBRA_IF_BOND) + return true; + + /* XXX: allow swpX i.e. a regular ethernet port to be an ES link too */ + return false; +} + +void zebra_evpn_if_es_print(struct vty *vty, struct zebra_if *zif) +{ + char buf[ETHER_ADDR_STRLEN]; + + if (zif->es_info.lid || !is_zero_mac(&zif->es_info.sysmac)) + vty_out(vty, " EVPN MH: ES id %u ES sysmac %s\n", + zif->es_info.lid, + prefix_mac2str(&zif->es_info.sysmac, + buf, sizeof(buf))); +} + +void zebra_evpn_es_if_oper_state_change(struct zebra_if *zif, bool up) +{ + struct zebra_evpn_es *es = zif->es_info.es; + bool old_up = !!(es->flags & ZEBRA_EVPNES_OPER_UP); + + if (old_up == up) + return; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("es %s state changed to %s ", + es->esi_str, + up ? "up" : "down"); + if (up) + es->flags |= ZEBRA_EVPNES_OPER_UP; + else + es->flags &= ~ZEBRA_EVPNES_OPER_UP; + + /* inform BGP of the ES oper state change */ + if (es->flags & ZEBRA_EVPNES_READY_FOR_BGP) + zebra_evpn_es_send_add_to_client(es); +} + +static char *zebra_evpn_es_vtep_str(char *vtep_str, struct zebra_evpn_es *es, + uint8_t vtep_str_size) +{ + struct zebra_evpn_es_vtep *zvtep; + struct listnode *node; + bool first = true; + + vtep_str[0] = '\0'; + for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, zvtep)) { + if (first) { + first = false; + strlcat(vtep_str, inet_ntoa(zvtep->vtep_ip), + vtep_str_size); + } else { + strlcat(vtep_str, ",", vtep_str_size); + strlcat(vtep_str, inet_ntoa(zvtep->vtep_ip), + vtep_str_size); + } + } + return vtep_str; +} + +static void zebra_evpn_es_show_entry(struct vty *vty, + struct zebra_evpn_es *es, json_object *json) +{ + char type_str[4]; + char vtep_str[ES_VTEP_LIST_STR_SZ]; + + if (json) { + /* XXX */ + } else { + type_str[0] = '\0'; + if (es->flags & ZEBRA_EVPNES_LOCAL) + strlcat(type_str, "L", sizeof(type_str)); + if (es->flags & ZEBRA_EVPNES_REMOTE) + strlcat(type_str, "R", sizeof(type_str)); + + zebra_evpn_es_vtep_str(vtep_str, es, sizeof(vtep_str)); + + vty_out(vty, "%-30s %-4s %-21s %s\n", + es->esi_str, type_str, + es->zif ? es->zif->ifp->name : "-", + vtep_str); + } +} + +static void zebra_evpn_es_show_entry_detail(struct vty *vty, + struct zebra_evpn_es *es, json_object *json) +{ + char type_str[80]; + struct zebra_evpn_es_vtep *zvtep; + struct listnode *node; + + if (json) { + /* XXX */ + } else { + type_str[0] = '\0'; + if (es->flags & ZEBRA_EVPNES_LOCAL) + strlcat(type_str, "Local", sizeof(type_str)); + if (es->flags & ZEBRA_EVPNES_REMOTE) { + if (strnlen(type_str, sizeof(type_str))) + strlcat(type_str, ",", sizeof(type_str)); + strlcat(type_str, "Remote", sizeof(type_str)); + } + + vty_out(vty, "ESI: %s\n", es->esi_str); + vty_out(vty, " Type: %s\n", type_str); + vty_out(vty, " Interface: %s\n", + (es->zif) ? + es->zif->ifp->name : "-"); + vty_out(vty, " State: %s\n", + (es->flags & ZEBRA_EVPNES_OPER_UP) ? + "up" : "down"); + vty_out(vty, " Ready for BGP: %s\n", + (es->flags & ZEBRA_EVPNES_READY_FOR_BGP) ? + "yes" : "no"); + vty_out(vty, " VNI Count: %d\n", listcount(es->es_evi_list)); + vty_out(vty, " MAC Count: %d\n", listcount(es->mac_list)); + vty_out(vty, " Nexthop group: 0x%x\n", es->nhg_id); + vty_out(vty, " VTEPs:\n"); + for (ALL_LIST_ELEMENTS_RO(es->es_vtep_list, node, zvtep)) + vty_out(vty, " %s nh: 0x%x\n", + inet_ntoa(zvtep->vtep_ip), + zvtep->nh_id); + + vty_out(vty, "\n"); + } +} + +void zebra_evpn_es_show(struct vty *vty, bool uj) +{ + struct zebra_evpn_es *es; + json_object *json = NULL; + + if (uj) { + /* XXX */ + } else { + vty_out(vty, "Type: L local, R remote\n"); + vty_out(vty, "%-30s %-4s %-21s %s\n", + "ESI", "Type", "ES-IF", "VTEPs"); + } + + RB_FOREACH(es, zebra_es_rb_head, &zmh_info->es_rb_tree) + zebra_evpn_es_show_entry(vty, es, json); +} + +void zebra_evpn_es_show_detail(struct vty *vty, bool uj) +{ + struct zebra_evpn_es *es; + json_object *json = NULL; + + RB_FOREACH(es, zebra_es_rb_head, &zmh_info->es_rb_tree) + zebra_evpn_es_show_entry_detail(vty, es, json); +} + +void zebra_evpn_es_show_esi(struct vty *vty, bool uj, esi_t *esi) +{ + struct zebra_evpn_es *es; + char esi_str[ESI_STR_LEN]; + json_object *json = NULL; + + es = zebra_evpn_es_find(esi); + + if (!es) { + esi_to_str(esi, esi_str, sizeof(esi_str)); + vty_out(vty, "ESI %s does not exist\n", esi_str); + return; + } + + zebra_evpn_es_show_entry_detail(vty, es, json); +} + +int zebra_evpn_mh_if_write(struct vty *vty, struct interface *ifp) +{ + struct zebra_if *zif = ifp->info; + char buf[ETHER_ADDR_STRLEN]; + + if (zif->es_info.lid) + vty_out(vty, " evpn mh es-id %u\n", zif->es_info.lid); + + if (!is_zero_mac(&zif->es_info.sysmac)) + vty_out(vty, " evpn mh es-sys-mac %s\n", + prefix_mac2str(&zif->es_info.sysmac, + buf, sizeof(buf))); + return 0; +} + +#ifndef VTYSH_EXTRACT_PL +#include "zebra/zebra_evpn_mh_clippy.c" +#endif +/* CLI for setting up sysmac part of ESI on an access port */ +DEFPY(zebra_evpn_es_sys_mac, + zebra_evpn_es_sys_mac_cmd, + "[no$no] evpn mh es-sys-mac [X:X:X:X:X:X$mac]", + NO_STR + "EVPN\n" + EVPN_MH_VTY_STR + "Ethernet segment system MAC\n" + MAC_STR +) +{ + VTY_DECLVAR_CONTEXT(interface, ifp); + struct zebra_if *zif; + int ret = 0; + + zif = ifp->info; + + if (no) { + static struct ethaddr zero_mac; + + ret = zebra_evpn_es_sys_mac_update(zif, &zero_mac); + if (ret == -1) { + vty_out(vty, "%%Failed to clear ES sysmac\n"); + return CMD_WARNING; + } + } else { + + if (!zebra_evpn_is_if_es_capable(zif)) { + vty_out(vty, + "%%ESI cannot be associated with this interface type\n"); + return CMD_WARNING; + } + + if (!mac || is_zero_mac(&mac->eth_addr)) { + vty_out(vty, "%%ES sysmac value is invalid\n"); + return CMD_WARNING; + } + + ret = zebra_evpn_es_sys_mac_update(zif, &mac->eth_addr); + if (ret == -1) { + vty_out(vty, "%%ESI already exists on a different interface\n"); + return CMD_WARNING; + } + } + return CMD_SUCCESS; +} + +/* CLI for setting up local-ID part of ESI on an access port */ +DEFPY(zebra_evpn_es_id, + zebra_evpn_es_id_cmd, + "[no$no] evpn mh es-id [(1-16777215)$es_lid]", + NO_STR + "EVPN\n" + EVPN_MH_VTY_STR + "Ethernet segment local identifier\n" + "ID\n" +) +{ + VTY_DECLVAR_CONTEXT(interface, ifp); + struct zebra_if *zif; + int ret; + + zif = ifp->info; + + if (no) { + ret = zebra_evpn_es_lid_update(zif, 0); + if (ret == -1) { + vty_out(vty, "%%Failed to clear ES local id\n"); + return CMD_WARNING; + } + } else { + if (!zebra_evpn_is_if_es_capable(zif)) { + vty_out(vty, + "%%ESI cannot be associated with this interface type\n"); + return CMD_WARNING; + } + + if (!es_lid) { + vty_out(vty, "%%Specify local ES ID\n"); + return CMD_WARNING; + } + ret = zebra_evpn_es_lid_update(zif, es_lid); + if (ret == -1) { + vty_out(vty, + "%%ESI already exists on a different interface\n"); + return CMD_WARNING; + } + } + return CMD_SUCCESS; +} + +/*****************************************************************************/ +/* A base L2-VNI is maintained to derive parameters such as ES originator-IP. + * XXX: once single vxlan device model becomes available this will not be + * necessary + */ +/* called when a new vni is added or becomes oper up or becomes a bridge port */ +void zebra_evpn_es_set_base_evpn(zebra_evpn_t *zevpn) +{ + struct listnode *node; + struct zebra_evpn_es *es; + + if (zmh_info->es_base_evpn) { + if (zmh_info->es_base_evpn != zevpn) { + /* unrelated EVPN; ignore it */ + return; + } + /* check if the local vtep-ip has changed */ + } else { + /* check if the EVPN can be used as base EVPN */ + if (!zebra_evpn_send_to_client_ok(zevpn)) + return; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("es base vni set to %d", + zevpn->vni); + zmh_info->es_base_evpn = zevpn; + } + + /* update local VTEP-IP */ + if (zmh_info->es_originator_ip.s_addr == + zmh_info->es_base_evpn->local_vtep_ip.s_addr) + return; + + zmh_info->es_originator_ip.s_addr = + zmh_info->es_base_evpn->local_vtep_ip.s_addr; + + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("es originator ip set to %s", + inet_ntoa(zmh_info->es_base_evpn->local_vtep_ip)); + + /* if originator ip changes we need to update bgp */ + for (ALL_LIST_ELEMENTS_RO(zmh_info->local_es_list, node, es)) { + if (es->flags & ZEBRA_EVPNES_READY_FOR_BGP) + zebra_evpn_es_send_add_to_client(es); + else + zebra_evpn_es_re_eval_send_to_client(es, + true /* es_evi_re_reval */); + } +} + +/* called when a vni is removed or becomes oper down or is removed from a + * bridge + */ +void zebra_evpn_es_clear_base_evpn(zebra_evpn_t *zevpn) +{ + struct listnode *node; + struct zebra_evpn_es *es; + + if (zmh_info->es_base_evpn != zevpn) + return; + + zmh_info->es_base_evpn = NULL; + /* lost current base EVPN; try to find a new one */ + zebra_evpn_es_get_one_base_evpn(); + + /* couldn't locate an eligible base evpn */ + if (!zmh_info->es_base_evpn && zmh_info->es_originator_ip.s_addr) { + if (IS_ZEBRA_DEBUG_EVPN_MH_ES) + zlog_debug("es originator ip cleared"); + + zmh_info->es_originator_ip.s_addr = 0; + /* lost originator ip */ + for (ALL_LIST_ELEMENTS_RO(zmh_info->local_es_list, node, es)) { + zebra_evpn_es_re_eval_send_to_client(es, + true /* es_evi_re_reval */); + } + } +} + +/* Locate an "eligible" L2-VNI to follow */ +static int zebra_evpn_es_get_one_base_evpn_cb(struct hash_bucket *b, void *data) +{ + zebra_evpn_t *zevpn = b->data; + + zebra_evpn_es_set_base_evpn(zevpn); + + if (zmh_info->es_base_evpn) + return HASHWALK_ABORT; + + return HASHWALK_CONTINUE; +} + +/* locate a base_evpn to follow for the purposes of common params like + * originator IP + */ +static void zebra_evpn_es_get_one_base_evpn(void) +{ + struct zebra_vrf *zvrf; + + zvrf = zebra_vrf_get_evpn(); + hash_walk(zvrf->evpn_table, zebra_evpn_es_get_one_base_evpn_cb, NULL); +} + +/*****************************************************************************/ +void zebra_evpn_mh_config_write(struct vty *vty) +{ + if (zmh_info->mac_hold_time != EVPN_MH_MAC_HOLD_TIME_DEF) + vty_out(vty, "evpn mh mac-holdtime %ld\n", + zmh_info->mac_hold_time); + + if (zmh_info->neigh_hold_time != EVPN_MH_NEIGH_HOLD_TIME_DEF) + vty_out(vty, "evpn mh neigh-holdtime %ld\n", + zmh_info->neigh_hold_time); +} + +int zebra_evpn_mh_neigh_holdtime_update(struct vty *vty, + uint32_t duration, bool set_default) +{ + if (set_default) + zmh_info->neigh_hold_time = EVPN_MH_NEIGH_HOLD_TIME_DEF; + + zmh_info->neigh_hold_time = duration; + + return 0; +} + +int zebra_evpn_mh_mac_holdtime_update(struct vty *vty, + uint32_t duration, bool set_default) +{ + if (set_default) + duration = EVPN_MH_MAC_HOLD_TIME_DEF; + + zmh_info->mac_hold_time = duration; + + return 0; +} + +void zebra_evpn_interface_init(void) +{ + install_element(INTERFACE_NODE, &zebra_evpn_es_id_cmd); + install_element(INTERFACE_NODE, &zebra_evpn_es_sys_mac_cmd); +} + +void zebra_evpn_mh_init(void) +{ + zrouter.mh_info = XCALLOC(MTYPE_ZMH_INFO, sizeof(*zrouter.mh_info)); + + zmh_info->mac_hold_time = EVPN_MH_MAC_HOLD_TIME_DEF; + zmh_info->neigh_hold_time = EVPN_MH_NEIGH_HOLD_TIME_DEF; + /* setup ES tables */ + RB_INIT(zebra_es_rb_head, &zmh_info->es_rb_tree); + zmh_info->local_es_list = list_new(); + listset_app_node_mem(zmh_info->local_es_list); + + bf_init(zmh_info->nh_id_bitmap, EVPN_NH_ID_MAX); + bf_assign_zero_index(zmh_info->nh_id_bitmap); + + /* setup broadcast domain tables */ + zmh_info->evpn_vlan_table = hash_create(zebra_evpn_acc_vl_hash_keymake, + zebra_evpn_acc_vl_cmp, "access VLAN hash table"); +} + +void zebra_evpn_mh_terminate(void) +{ + list_delete(&zmh_info->local_es_list); + + hash_iterate(zmh_info->evpn_vlan_table, + zebra_evpn_acc_vl_cleanup_all, NULL); + hash_free(zmh_info->evpn_vlan_table); +} |