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Diffstat (limited to 'zebra/zebra_evpn_mac.h')
| -rw-r--r-- | zebra/zebra_evpn_mac.h | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/zebra/zebra_evpn_mac.h b/zebra/zebra_evpn_mac.h new file mode 100644 index 0000000..b727ac1 --- /dev/null +++ b/zebra/zebra_evpn_mac.h @@ -0,0 +1,296 @@ +/* + * Zebra EVPN MAC Data structures and definitions + * These are "internal" to this function. + * Copyright (C) 2016, 2017 Cumulus Networks, Inc. + * Copyright (C) 2020 Volta Networks. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with FRR; see the file COPYING. If not, write to the Free + * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, USA. + */ + +#ifndef _ZEBRA_EVPN_MAC_H +#define _ZEBRA_EVPN_MAC_H + +#ifdef __cplusplus +extern "C" { +#endif + + +struct host_rb_entry { + RB_ENTRY(host_rb_entry) hl_entry; + + struct prefix p; +}; + +RB_HEAD(host_rb_tree_entry, host_rb_entry); +RB_PROTOTYPE(host_rb_tree_entry, host_rb_entry, hl_entry, + host_rb_entry_compare); +/* + * MAC hash table. + * + * This table contains the MAC addresses pertaining to this VNI. + * This includes local MACs learnt on an attached VLAN that maps + * to this VNI as well as remote MACs learnt and installed by BGP. + * Local MACs will be known either on a VLAN sub-interface or + * on (port, VLAN); however, it is sufficient for zebra to maintain + * against the VNI i.e., it does not need to retain the local "port" + * information. The correct VNI will be obtained as zebra maintains + * the mapping (of VLAN to VNI). + */ +struct zebra_mac { + /* MAC address. */ + struct ethaddr macaddr; + + /* When modifying flags please fixup zebra_evpn_zebra_mac_flag_dump */ + uint32_t flags; +#define ZEBRA_MAC_LOCAL 0x01 +#define ZEBRA_MAC_REMOTE 0x02 +#define ZEBRA_MAC_AUTO 0x04 /* Auto created for neighbor. */ +#define ZEBRA_MAC_STICKY 0x08 /* Static MAC */ +#define ZEBRA_MAC_REMOTE_RMAC 0x10 /* remote router mac */ +#define ZEBRA_MAC_DEF_GW 0x20 +/* remote VTEP advertised MAC as default GW */ +#define ZEBRA_MAC_REMOTE_DEF_GW 0x40 +#define ZEBRA_MAC_DUPLICATE 0x80 +#define ZEBRA_MAC_FPM_SENT 0x100 /* whether or not this entry was sent. */ +/* MAC is locally active on an ethernet segment peer */ +#define ZEBRA_MAC_ES_PEER_ACTIVE 0x200 +/* MAC has been proxy-advertised by peers. This means we need to + * keep the entry for forwarding but cannot advertise it + */ +#define ZEBRA_MAC_ES_PEER_PROXY 0x400 +/* We have not been able to independently establish that the host is + * local connected but one or more ES peers claims it is. + * We will maintain the entry for forwarding purposes and continue + * to advertise it as locally attached but with a "proxy" flag + */ +#define ZEBRA_MAC_LOCAL_INACTIVE 0x800 +/* The MAC entry was created because of advertise_svi_mac */ +#define ZEBRA_MAC_SVI 0x1000 + +#define ZEBRA_MAC_ALL_LOCAL_FLAGS (ZEBRA_MAC_LOCAL | ZEBRA_MAC_LOCAL_INACTIVE) +#define ZEBRA_MAC_ALL_PEER_FLAGS \ + (ZEBRA_MAC_ES_PEER_PROXY | ZEBRA_MAC_ES_PEER_ACTIVE) + + /* back pointer to zevpn */ + struct zebra_evpn *zevpn; + + /* Local or remote info. + * Note: fwd_info is only relevant if mac->es is NULL. + */ + union { + struct { + ifindex_t ifindex; + ns_id_t ns_id; + vlanid_t vid; + } local; + + struct in_addr r_vtep_ip; + } fwd_info; + + /* Local or remote ES */ + struct zebra_evpn_es *es; + /* memory used to link the mac to the es */ + struct listnode es_listnode; + + /* access-port/bridge member. only relevant for local macs that + * are associated with a zero-ESI, + * XXX - this belongs in fwd_info.local; however fwd_info is + * being cleared and memset to zero in different ways that can + * mess up the links. + */ + struct interface *ifp; + /* memory used to link the mac to the ifp */ + struct listnode ifp_listnode; + + /* Mobility sequence numbers associated with this entry. */ + uint32_t rem_seq; + uint32_t loc_seq; + + /* List of neigh associated with this mac */ + struct list *neigh_list; + + /* List of nexthop associated with this RMAC */ + struct list *nh_list; + + /* Duplicate mac detection */ + uint32_t dad_count; + + struct thread *dad_mac_auto_recovery_timer; + + struct timeval detect_start_time; + + time_t dad_dup_detect_time; + + /* used for ageing out the PEER_ACTIVE flag */ + struct thread *hold_timer; + + /* number of neigh entries (using this mac) that have + * ZEBRA_MAC_ES_PEER_ACTIVE or ZEBRA_NEIGH_ES_PEER_PROXY + */ + uint32_t sync_neigh_cnt; + + time_t uptime; +}; + +/* + * Context for MAC hash walk - used by callbacks. + */ +struct mac_walk_ctx { + struct zebra_evpn *zevpn; /* EVPN hash */ + struct zebra_vrf *zvrf; /* VRF - for client notification. */ + int uninstall; /* uninstall from kernel? */ + int upd_client; /* uninstall from client? */ + + uint32_t flags; +#define DEL_LOCAL_MAC 0x1 +#define DEL_REMOTE_MAC 0x2 +#define DEL_ALL_MAC (DEL_LOCAL_MAC | DEL_REMOTE_MAC) +#define DEL_REMOTE_MAC_FROM_VTEP 0x4 +#define SHOW_REMOTE_MAC_FROM_VTEP 0x8 + + struct in_addr r_vtep_ip; /* To walk MACs from specific VTEP */ + + struct vty *vty; /* Used by VTY handlers */ + uint32_t count; /* Used by VTY handlers */ + struct json_object *json; /* Used for JSON Output */ + bool print_dup; /* Used to print dup addr list */ +}; + +struct rmac_walk_ctx { + struct vty *vty; + struct json_object *json; +}; + +/* temporary datastruct to pass info between the mac-update and + * neigh-update while handling mac-ip routes + */ +struct sync_mac_ip_ctx { + bool ignore_macip; + bool mac_created; + bool mac_inactive; + bool mac_dp_update_deferred; + struct zebra_mac *mac; +}; + +/**************************** SYNC MAC handling *****************************/ +/* if the mac has been added of a mac-route from the peer + * or if it is being referenced by a neigh added by the + * peer we cannot let it age out i.e. we set the static bit + * in the dataplane + */ +static inline bool zebra_evpn_mac_is_static(struct zebra_mac *mac) +{ + return ((mac->flags & ZEBRA_MAC_ALL_PEER_FLAGS) || mac->sync_neigh_cnt); +} + +/* mac needs to be locally active or active on an ES peer */ +static inline bool zebra_evpn_mac_is_ready_for_bgp(uint32_t flags) +{ + return (flags & ZEBRA_MAC_LOCAL) + && (!(flags & ZEBRA_MAC_LOCAL_INACTIVE) + || (flags & ZEBRA_MAC_ES_PEER_ACTIVE)); +} + +void zebra_evpn_mac_stop_hold_timer(struct zebra_mac *mac); + +static inline void zebra_evpn_mac_clear_sync_info(struct zebra_mac *mac) +{ + UNSET_FLAG(mac->flags, ZEBRA_MAC_ALL_PEER_FLAGS); + zebra_evpn_mac_stop_hold_timer(mac); +} + +static inline bool zebra_evpn_mac_in_use(struct zebra_mac *mac) +{ + return !list_isempty(mac->neigh_list) + || CHECK_FLAG(mac->flags, ZEBRA_MAC_SVI); +} + +struct hash *zebra_mac_db_create(const char *desc); +uint32_t num_valid_macs(struct zebra_evpn *zevi); +uint32_t num_dup_detected_macs(struct zebra_evpn *zevi); +int zebra_evpn_rem_mac_uninstall(struct zebra_evpn *zevi, struct zebra_mac *mac, + bool force); +int zebra_evpn_rem_mac_install(struct zebra_evpn *zevi, struct zebra_mac *mac, + bool was_static); +void zebra_evpn_deref_ip2mac(struct zebra_evpn *zevi, struct zebra_mac *mac); +struct zebra_mac *zebra_evpn_mac_lookup(struct zebra_evpn *zevi, + const struct ethaddr *mac); +struct zebra_mac *zebra_evpn_mac_add(struct zebra_evpn *zevi, + const struct ethaddr *macaddr); +int zebra_evpn_mac_del(struct zebra_evpn *zevi, struct zebra_mac *mac); +int zebra_evpn_macip_send_msg_to_client(uint32_t id, + const struct ethaddr *macaddr, + const struct ipaddr *ip, uint8_t flags, + uint32_t seq, int state, + struct zebra_evpn_es *es, uint16_t cmd); +void zebra_evpn_print_mac(struct zebra_mac *mac, void *ctxt, json_object *json); +void zebra_evpn_print_mac_hash(struct hash_bucket *bucket, void *ctxt); +void zebra_evpn_print_mac_hash_detail(struct hash_bucket *bucket, void *ctxt); +int zebra_evpn_sync_mac_dp_install(struct zebra_mac *mac, bool set_inactive, + bool force_clear_static, const char *caller); +void zebra_evpn_mac_send_add_del_to_client(struct zebra_mac *mac, + bool old_bgp_ready, + bool new_bgp_ready); + +void zebra_evpn_mac_del_all(struct zebra_evpn *zevi, int uninstall, + int upd_client, uint32_t flags); +int zebra_evpn_mac_send_add_to_client(vni_t vni, const struct ethaddr *macaddr, + uint32_t mac_flags, uint32_t seq, + struct zebra_evpn_es *es); +int zebra_evpn_mac_send_del_to_client(vni_t vni, const struct ethaddr *macaddr, + uint32_t flags, bool force); +void zebra_evpn_send_mac_list_to_client(struct zebra_evpn *zevi); +struct zebra_mac *zebra_evpn_proc_sync_mac_update( + struct zebra_evpn *zevi, const struct ethaddr *macaddr, + uint16_t ipa_len, const struct ipaddr *ipaddr, uint8_t flags, + uint32_t seq, const esi_t *esi, struct sync_mac_ip_ctx *ctx); +void zebra_evpn_sync_mac_del(struct zebra_mac *mac); +void zebra_evpn_rem_mac_del(struct zebra_evpn *zevi, struct zebra_mac *mac); +void zebra_evpn_print_dad_mac_hash(struct hash_bucket *bucket, void *ctxt); +void zebra_evpn_print_dad_mac_hash_detail(struct hash_bucket *bucket, + void *ctxt); +int zebra_evpn_mac_remote_macip_add( + struct zebra_evpn *zevpn, struct zebra_vrf *zvrf, + const struct ethaddr *macaddr, uint16_t ipa_len, + const struct ipaddr *ipaddr, struct zebra_mac **macp, + struct in_addr vtep_ip, uint8_t flags, uint32_t seq, const esi_t *esi); + +int zebra_evpn_add_update_local_mac(struct zebra_vrf *zvrf, + struct zebra_evpn *zevpn, + struct interface *ifp, + const struct ethaddr *macaddr, vlanid_t vid, + bool sticky, bool local_inactive, + bool dp_static, struct zebra_mac *mac); +int zebra_evpn_del_local_mac(struct zebra_evpn *zevpn, struct zebra_mac *mac, + bool clear_static); +void zebra_evpn_mac_gw_macip_add(struct interface *ifp, + struct zebra_evpn *zevpn, + const struct ipaddr *ip, + struct zebra_mac **macp, + const struct ethaddr *macaddr, + vlanid_t vlan_id, bool def_gw); +void zebra_evpn_mac_svi_add(struct interface *ifp, struct zebra_evpn *zevpn); +void zebra_evpn_mac_svi_del(struct interface *ifp, struct zebra_evpn *zevpn); +void zebra_evpn_mac_ifp_del(struct interface *ifp); +void zebra_evpn_mac_clear_fwd_info(struct zebra_mac *zmac); + +#ifdef __cplusplus +} +#endif + +#endif /*_ZEBRA_EVPN_MAC_H */ |