Adding upstream version 8.4.4.upstream/8.4.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 638 insertions, 0 deletions

diff --git a/bgpd/bgp_attr.h b/bgpd/bgp_attr.h
new file mode 100644
index 0000000..4963ea6
--- /dev/null
+++ b/bgpd/bgp_attr.h
@@ -0,0 +1,638 @@
+/* BGP attributes.
+ * Copyright (C) 1996, 97, 98 Kunihiro Ishiguro
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra 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.
+ *
+ * GNU Zebra 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 this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _QUAGGA_BGP_ATTR_H
+#define _QUAGGA_BGP_ATTR_H
+
+#include "mpls.h"
+#include "bgp_attr_evpn.h"
+#include "bgpd/bgp_encap_types.h"
+#include "srte.h"
+
+/* Simple bit mapping. */
+#define BITMAP_NBBY 8
+
+#define SET_BITMAP(MAP, NUM)                                                   \
+	SET_FLAG(MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))
+
+#define CHECK_BITMAP(MAP, NUM)                                                 \
+	CHECK_FLAG(MAP[(NUM) / BITMAP_NBBY], 1 << ((NUM) % BITMAP_NBBY))
+
+#define BGP_MED_MAX UINT32_MAX
+
+/* BGP Attribute type range. */
+#define BGP_ATTR_TYPE_RANGE     256
+#define BGP_ATTR_BITMAP_SIZE    (BGP_ATTR_TYPE_RANGE / BITMAP_NBBY)
+
+/* BGP Attribute flags. */
+#define BGP_ATTR_FLAG_OPTIONAL  0x80	/* Attribute is optional. */
+#define BGP_ATTR_FLAG_TRANS     0x40	/* Attribute is transitive. */
+#define BGP_ATTR_FLAG_PARTIAL   0x20	/* Attribute is partial. */
+#define BGP_ATTR_FLAG_EXTLEN    0x10	/* Extended length flag. */
+
+/* BGP attribute header must bigger than 2. */
+#define BGP_ATTR_MIN_LEN        3       /* Attribute flag, type length. */
+#define BGP_ATTR_DEFAULT_WEIGHT 32768
+
+/* Valid lengths for mp_nexthop_len */
+#define BGP_ATTR_NHLEN_IPV4               IPV4_MAX_BYTELEN
+#define BGP_ATTR_NHLEN_VPNV4              8+IPV4_MAX_BYTELEN
+#define BGP_ATTR_NHLEN_IPV6_GLOBAL        IPV6_MAX_BYTELEN
+#define BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL (IPV6_MAX_BYTELEN * 2)
+#define BGP_ATTR_NHLEN_VPNV6_GLOBAL       8+IPV6_MAX_BYTELEN
+#define BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL ((8+IPV6_MAX_BYTELEN) * 2)
+
+/* Prefix SID types */
+#define BGP_PREFIX_SID_LABEL_INDEX     1
+#define BGP_PREFIX_SID_IPV6            2
+#define BGP_PREFIX_SID_ORIGINATOR_SRGB 3
+#define BGP_PREFIX_SID_VPN_SID 4
+#define BGP_PREFIX_SID_SRV6_L3_SERVICE 5
+#define BGP_PREFIX_SID_SRV6_L2_SERVICE 6
+
+#define BGP_PREFIX_SID_LABEL_INDEX_LENGTH      7
+#define BGP_PREFIX_SID_IPV6_LENGTH            19
+#define BGP_PREFIX_SID_ORIGINATOR_SRGB_LENGTH  6
+#define BGP_PREFIX_SID_VPN_SID_LENGTH         19
+
+/* SRv6 Service Sub-TLV types */
+#define BGP_PREFIX_SID_SRV6_L3_SERVICE_SID_INFO 1
+#define BGP_PREFIX_SID_SRV6_L3_SERVICE_SID_INFO_LENGTH 21
+
+/* SRv6 Service Data Sub-Sub-TLV types */
+#define BGP_PREFIX_SID_SRV6_L3_SERVICE_SID_STRUCTURE 1
+#define BGP_PREFIX_SID_SRV6_L3_SERVICE_SID_STRUCTURE_LENGTH 6
+
+/* SRv6 SID Structure default values */
+#define BGP_PREFIX_SID_SRV6_LOCATOR_BLOCK_LENGTH 40
+#define BGP_PREFIX_SID_SRV6_LOCATOR_NODE_LENGTH 24
+#define BGP_PREFIX_SID_SRV6_FUNCTION_LENGTH 16
+#define BGP_PREFIX_SID_SRV6_ARGUMENT_LENGTH 0
+#define BGP_PREFIX_SID_SRV6_TRANSPOSITION_LENGTH 16
+#define BGP_PREFIX_SID_SRV6_TRANSPOSITION_OFFSET 64
+
+#define BGP_ATTR_NH_AFI(afi, attr) \
+	((afi != AFI_L2VPN) ? afi : \
+	((attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV4) ? AFI_IP : AFI_IP6))
+
+/* PMSI tunnel types (RFC 6514) */
+
+struct bgp_attr_encap_subtlv {
+	struct bgp_attr_encap_subtlv *next; /* for chaining */
+	/* Reference count of this attribute. */
+	unsigned long refcnt;
+	uint16_t type;
+	uint16_t length;
+	uint8_t value[0]; /* will be extended */
+};
+
+#ifdef ENABLE_BGP_VNC
+/*
+ * old rfp<->rfapi representation
+ */
+struct bgp_tea_options {
+	struct bgp_tea_options *next;
+	uint8_t options_count;
+	uint16_t options_length; /* each TLV may be 256 in length */
+	uint8_t type;
+	uint8_t length;
+	void *value; /* pointer to data */
+};
+
+#endif
+
+enum pta_type {
+	PMSI_TNLTYPE_NO_INFO = 0,
+	PMSI_TNLTYPE_RSVP_TE_P2MP,
+	PMSI_TNLTYPE_MLDP_P2MP,
+	PMSI_TNLTYPE_PIM_SSM,
+	PMSI_TNLTYPE_PIM_SM,
+	PMSI_TNLTYPE_PIM_BIDIR,
+	PMSI_TNLTYPE_INGR_REPL,
+	PMSI_TNLTYPE_MLDP_MP2MP,
+	PMSI_TNLTYPE_MAX = PMSI_TNLTYPE_MLDP_MP2MP
+};
+
+/*
+ * Prefix-SID type-4
+ * SRv6-VPN-SID-TLV
+ * draft-dawra-idr-srv6-vpn-04
+ */
+struct bgp_attr_srv6_vpn {
+	unsigned long refcnt;
+	uint8_t sid_flags;
+	struct in6_addr sid;
+};
+
+/*
+ * Prefix-SID type-5
+ * SRv6-L3VPN-Service-TLV
+ * draft-dawra-idr-srv6-vpn-05
+ */
+struct bgp_attr_srv6_l3vpn {
+	unsigned long refcnt;
+	uint8_t sid_flags;
+	uint16_t endpoint_behavior;
+	struct in6_addr sid;
+	uint8_t loc_block_len;
+	uint8_t loc_node_len;
+	uint8_t func_len;
+	uint8_t arg_len;
+	uint8_t transposition_len;
+	uint8_t transposition_offset;
+};
+
+/* BGP core attribute structure. */
+struct attr {
+	/* AS Path structure */
+	struct aspath *aspath;
+
+	/* Community structure */
+	struct community *community;
+
+	/* Reference count of this attribute. */
+	unsigned long refcnt;
+
+	/* Flag of attribute is set or not. */
+	uint64_t flag;
+
+	/* Apart from in6_addr, the remaining static attributes */
+	struct in_addr nexthop;
+	uint32_t med;
+	uint32_t local_pref;
+	ifindex_t nh_ifindex;
+
+	/* Path origin attribute */
+	uint8_t origin;
+
+	/* PMSI tunnel type (RFC 6514). */
+	enum pta_type pmsi_tnl_type;
+
+	/* has the route-map changed any attribute?
+	   Used on the peer outbound side. */
+	uint32_t rmap_change_flags;
+
+	/* Multi-Protocol Nexthop, AFI IPv6 */
+	struct in6_addr mp_nexthop_global;
+	struct in6_addr mp_nexthop_local;
+
+	/* ifIndex corresponding to mp_nexthop_local. */
+	ifindex_t nh_lla_ifindex;
+
+	/* Extended Communities attribute. */
+	struct ecommunity *ecommunity;
+
+	/* Extended Communities attribute. */
+	struct ecommunity *ipv6_ecommunity;
+
+	/* Large Communities attribute. */
+	struct lcommunity *lcommunity;
+
+	/* Route-Reflector Cluster attribute */
+	struct cluster_list *cluster1;
+
+	/* Unknown transitive attribute. */
+	struct transit *transit;
+
+	struct in_addr mp_nexthop_global_in;
+
+	/* Aggregator Router ID attribute */
+	struct in_addr aggregator_addr;
+
+	/* Route Reflector Originator attribute */
+	struct in_addr originator_id;
+
+	/* Local weight, not actually an attribute */
+	uint32_t weight;
+
+	/* Aggregator ASN */
+	as_t aggregator_as;
+
+	/* MP Nexthop length */
+	uint8_t mp_nexthop_len;
+
+	/* MP Nexthop preference */
+	uint8_t mp_nexthop_prefer_global;
+
+	/* Static MAC for EVPN */
+	uint8_t sticky;
+
+	/* Flag for default gateway extended community in EVPN */
+	uint8_t default_gw;
+
+	/* NA router flag (R-bit) support in EVPN */
+	uint8_t router_flag;
+
+	/* ES info */
+	uint8_t es_flags;
+	/* Path is not "locally-active" on the advertising VTEP. This is
+	 * translated into an ARP-ND ECOM.
+	 */
+#define ATTR_ES_PROXY_ADVERT (1 << 0)
+	/* Destination ES is present locally. This flag is set on local
+	 * paths and sync paths
+	 */
+#define ATTR_ES_IS_LOCAL (1 << 1)
+	/* There are one or more non-best paths from ES peers. Note that
+	 * this flag is only set on the local MAC-IP paths in the VNI
+	 * route table (not set in the global routing table). And only
+	 * non-proxy advertisements from an ES peer can result in this
+	 * flag being set.
+	 */
+#define ATTR_ES_PEER_ACTIVE (1 << 2)
+	/* There are one or more non-best proxy paths from ES peers */
+#define ATTR_ES_PEER_PROXY (1 << 3)
+	/* An ES peer has router bit set - only applicable if
+	 * ATTR_ES_PEER_ACTIVE is set
+	 */
+#define ATTR_ES_PEER_ROUTER (1 << 4)
+
+	/* These two flags are only set on L3 routes installed in a
+	 * VRF as a result of EVPN MAC-IP route
+	 * XXX - while splitting up per-family attrs these need to be
+	 * classified as non-EVPN
+	 */
+#define ATTR_ES_L3_NHG_USE (1 << 5)
+#define ATTR_ES_L3_NHG_ACTIVE (1 << 6)
+#define ATTR_ES_L3_NHG (ATTR_ES_L3_NHG_USE | ATTR_ES_L3_NHG_ACTIVE)
+
+	/* route tag */
+	route_tag_t tag;
+
+	/* Label index */
+	uint32_t label_index;
+
+	/* MPLS label */
+	mpls_label_t label;
+
+	/* SRv6 VPN SID */
+	struct bgp_attr_srv6_vpn *srv6_vpn;
+
+	/* SRv6 L3VPN SID */
+	struct bgp_attr_srv6_l3vpn *srv6_l3vpn;
+
+	uint16_t encap_tunneltype;		     /* grr */
+	struct bgp_attr_encap_subtlv *encap_subtlvs; /* rfc5512 */
+
+#ifdef ENABLE_BGP_VNC
+	struct bgp_attr_encap_subtlv *vnc_subtlvs; /* VNC-specific */
+#endif
+	/* EVPN */
+	struct bgp_route_evpn evpn_overlay;
+
+	/* EVPN MAC Mobility sequence number, if any. */
+	uint32_t mm_seqnum;
+	/* highest MM sequence number rxed in a MAC-IP route from an
+	 * ES peer (this includes both proxy and non-proxy MAC-IP
+	 * advertisements from ES peers).
+	 * This is only applicable to local paths in the VNI routing
+	 * table and derived from other imported/non-best paths.
+	 */
+	uint32_t mm_sync_seqnum;
+
+	/* EVPN local router-mac */
+	struct ethaddr rmac;
+
+	/* Distance as applied by Route map */
+	uint8_t distance;
+
+	/* rmap set table */
+	uint32_t rmap_table_id;
+
+	/* Link bandwidth value, if any. */
+	uint32_t link_bw;
+
+	/* EVPN ES */
+	esi_t esi;
+
+	/* SR-TE Color */
+	uint32_t srte_color;
+
+	/* EVPN DF preference and algorithm for DF election on local ESs */
+	uint16_t df_pref;
+	uint8_t df_alg;
+
+	/* Nexthop type */
+	enum nexthop_types_t nh_type;
+
+	/* If NEXTHOP_TYPE_BLACKHOLE, then blackhole type */
+	enum blackhole_type bh_type;
+
+	/* OTC value if set */
+	uint32_t otc;
+};
+
+/* rmap_change_flags definition */
+#define BATTR_RMAP_IPV4_NHOP_CHANGED (1 << 0)
+#define BATTR_RMAP_NEXTHOP_PEER_ADDRESS (1 << 1)
+#define BATTR_REFLECTED (1 << 2)
+#define BATTR_RMAP_NEXTHOP_UNCHANGED (1 << 3)
+#define BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED (1 << 4)
+#define BATTR_RMAP_IPV6_LL_NHOP_CHANGED (1 << 5)
+#define BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED (1 << 6)
+#define BATTR_RMAP_LINK_BW_SET (1 << 7)
+#define BATTR_RMAP_L3VPN_ACCEPT_GRE (1 << 8)
+
+/* Router Reflector related structure. */
+struct cluster_list {
+	unsigned long refcnt;
+	int length;
+	struct in_addr *list;
+};
+
+/* Unknown transit attribute. */
+struct transit {
+	unsigned long refcnt;
+	int length;
+	uint8_t *val;
+};
+
+/* "(void) 0" will generate a compiler error.  this is a safety check to
+ * ensure we're not using a value that exceeds the bit size of attr->flag. */
+#define ATTR_FLAG_BIT(X)                                                       \
+	__builtin_choose_expr((X) >= 1 && (X) <= 64, 1ULL << ((X)-1), (void)0)
+
+#define BGP_CLUSTER_LIST_LENGTH(attr)                                          \
+	(((attr)->flag & ATTR_FLAG_BIT(BGP_ATTR_CLUSTER_LIST))                 \
+		 ? bgp_attr_get_cluster((attr))->length                        \
+		 : 0)
+
+enum bgp_attr_parse_ret {
+	BGP_ATTR_PARSE_PROCEED = 0,
+	BGP_ATTR_PARSE_ERROR = -1,
+	BGP_ATTR_PARSE_WITHDRAW = -2,
+
+	/* only used internally, send notify + convert to BGP_ATTR_PARSE_ERROR
+	 */
+	BGP_ATTR_PARSE_ERROR_NOTIFYPLS = -3,
+	BGP_ATTR_PARSE_EOR = -4,
+};
+
+struct bpacket_attr_vec_arr;
+
+/* Prototypes. */
+extern void bgp_attr_init(void);
+extern void bgp_attr_finish(void);
+extern enum bgp_attr_parse_ret
+bgp_attr_parse(struct peer *peer, struct attr *attr, bgp_size_t size,
+	       struct bgp_nlri *mp_update, struct bgp_nlri *mp_withdraw);
+extern struct attr *bgp_attr_intern(struct attr *attr);
+extern void bgp_attr_unintern_sub(struct attr *attr);
+extern void bgp_attr_unintern(struct attr **pattr);
+extern void bgp_attr_flush(struct attr *attr);
+extern struct attr *bgp_attr_default_set(struct attr *attr, struct bgp *bgp,
+					 uint8_t origin);
+extern struct attr *bgp_attr_aggregate_intern(
+	struct bgp *bgp, uint8_t origin, struct aspath *aspath,
+	struct community *community, struct ecommunity *ecommunity,
+	struct lcommunity *lcommunity, struct bgp_aggregate *aggregate,
+	uint8_t atomic_aggregate, const struct prefix *p);
+extern bgp_size_t bgp_packet_attribute(struct bgp *bgp, struct peer *peer,
+				       struct stream *s, struct attr *attr,
+				       struct bpacket_attr_vec_arr *vecarr,
+				       struct prefix *p, afi_t afi, safi_t safi,
+				       struct peer *from, struct prefix_rd *prd,
+				       mpls_label_t *label, uint32_t num_labels,
+				       bool addpath_capable,
+				       uint32_t addpath_tx_id);
+extern void bgp_dump_routes_attr(struct stream *s, struct attr *attr,
+				 const struct prefix *p);
+extern bool attrhash_cmp(const void *arg1, const void *arg2);
+extern unsigned int attrhash_key_make(const void *p);
+extern void attr_show_all(struct vty *vty);
+extern unsigned long int attr_count(void);
+extern unsigned long int attr_unknown_count(void);
+
+/* Cluster list prototypes. */
+extern bool cluster_loop_check(struct cluster_list *cluster,
+			       struct in_addr originator);
+
+/* Below exported for unit-test purposes only */
+struct bgp_attr_parser_args {
+	struct peer *peer;
+	bgp_size_t length; /* attribute data length; */
+	bgp_size_t total;  /* total length, inc header */
+	struct attr *attr;
+	uint8_t type;
+	uint8_t flags;
+	uint8_t *startp;
+};
+extern int bgp_mp_reach_parse(struct bgp_attr_parser_args *args,
+			      struct bgp_nlri *mp_update);
+extern int bgp_mp_unreach_parse(struct bgp_attr_parser_args *args,
+				struct bgp_nlri *mp_withdraw);
+extern enum bgp_attr_parse_ret
+bgp_attr_prefix_sid(struct bgp_attr_parser_args *args);
+
+extern struct bgp_attr_encap_subtlv *
+encap_tlv_dup(struct bgp_attr_encap_subtlv *orig);
+
+extern void bgp_attr_flush_encap(struct attr *attr);
+
+extern void bgp_attr_extcom_tunnel_type(struct attr *attr,
+					 bgp_encap_types *tunnel_type);
+
+/**
+ * Set of functions to encode MP_REACH_NLRI and MP_UNREACH_NLRI attributes.
+ * Typical call sequence is to call _start(), followed by multiple _prefix(),
+ * one for each NLRI that needs to be encoded into the UPDATE message, and
+ * finally the _end() function.
+ */
+extern size_t bgp_packet_mpattr_start(struct stream *s, struct peer *peer,
+				      afi_t afi, safi_t safi,
+				      struct bpacket_attr_vec_arr *vecarr,
+				      struct attr *attr);
+extern void bgp_packet_mpattr_prefix(struct stream *s, afi_t afi, safi_t safi,
+				     const struct prefix *p,
+				     const struct prefix_rd *prd,
+				     mpls_label_t *label, uint32_t num_labels,
+				     bool addpath_capable,
+				     uint32_t addpath_tx_id, struct attr *);
+extern size_t bgp_packet_mpattr_prefix_size(afi_t afi, safi_t safi,
+					    const struct prefix *p);
+extern void bgp_packet_mpattr_end(struct stream *s, size_t sizep);
+
+extern size_t bgp_packet_mpunreach_start(struct stream *s, afi_t afi,
+					 safi_t safi);
+extern void bgp_packet_mpunreach_prefix(
+	struct stream *s, const struct prefix *p, afi_t afi, safi_t safi,
+	const struct prefix_rd *prd, mpls_label_t *label, uint32_t num_labels,
+	bool addpath_capable, uint32_t addpath_tx_id, struct attr *attr);
+extern void bgp_packet_mpunreach_end(struct stream *s, size_t attrlen_pnt);
+
+extern enum bgp_attr_parse_ret bgp_attr_nexthop_valid(struct peer *peer,
+						      struct attr *attr);
+
+static inline int bgp_rmap_nhop_changed(uint32_t out_rmap_flags,
+					uint32_t in_rmap_flags)
+{
+	return ((CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_PEER_ADDRESS)
+		 || CHECK_FLAG(out_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED)
+		 || CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV4_NHOP_CHANGED)
+		 || CHECK_FLAG(out_rmap_flags,
+			       BATTR_RMAP_IPV6_GLOBAL_NHOP_CHANGED)
+		 || CHECK_FLAG(out_rmap_flags,
+			       BATTR_RMAP_IPV6_PREFER_GLOBAL_CHANGED)
+		 || CHECK_FLAG(out_rmap_flags, BATTR_RMAP_IPV6_LL_NHOP_CHANGED)
+		 || CHECK_FLAG(in_rmap_flags, BATTR_RMAP_NEXTHOP_UNCHANGED))
+			? 1
+			: 0);
+}
+
+static inline uint32_t mac_mobility_seqnum(struct attr *attr)
+{
+	return (attr) ? attr->mm_seqnum : 0;
+}
+
+static inline enum pta_type bgp_attr_get_pmsi_tnl_type(struct attr *attr)
+{
+	return attr->pmsi_tnl_type;
+}
+
+static inline void bgp_attr_set_pmsi_tnl_type(struct attr *attr,
+					      enum pta_type pmsi_tnl_type)
+{
+	attr->pmsi_tnl_type = pmsi_tnl_type;
+}
+
+static inline struct ecommunity *
+bgp_attr_get_ecommunity(const struct attr *attr)
+{
+	return attr->ecommunity;
+}
+
+static inline void bgp_attr_set_ecommunity(struct attr *attr,
+					   struct ecommunity *ecomm)
+{
+	attr->ecommunity = ecomm;
+
+	if (ecomm)
+		SET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES));
+	else
+		UNSET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_EXT_COMMUNITIES));
+}
+
+static inline struct lcommunity *
+bgp_attr_get_lcommunity(const struct attr *attr)
+{
+	return attr->lcommunity;
+}
+
+static inline void bgp_attr_set_lcommunity(struct attr *attr,
+					   struct lcommunity *lcomm)
+{
+	attr->lcommunity = lcomm;
+
+	if (lcomm)
+		SET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES));
+	else
+		UNSET_FLAG(attr->flag,
+			   ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES));
+}
+
+static inline struct community *bgp_attr_get_community(const struct attr *attr)
+{
+	return attr->community;
+}
+
+static inline void bgp_attr_set_community(struct attr *attr,
+					  struct community *comm)
+{
+	attr->community = comm;
+
+	if (comm)
+		SET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES));
+	else
+		UNSET_FLAG(attr->flag, ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES));
+}
+
+static inline struct ecommunity *
+bgp_attr_get_ipv6_ecommunity(const struct attr *attr)
+{
+	return attr->ipv6_ecommunity;
+}
+
+static inline void bgp_attr_set_ipv6_ecommunity(struct attr *attr,
+						struct ecommunity *ipv6_ecomm)
+{
+	attr->ipv6_ecommunity = ipv6_ecomm;
+
+	if (ipv6_ecomm)
+		SET_FLAG(attr->flag,
+			 ATTR_FLAG_BIT(BGP_ATTR_IPV6_EXT_COMMUNITIES));
+	else
+		UNSET_FLAG(attr->flag,
+			   ATTR_FLAG_BIT(BGP_ATTR_IPV6_EXT_COMMUNITIES));
+}
+
+static inline struct transit *bgp_attr_get_transit(const struct attr *attr)
+{
+	return attr->transit;
+}
+
+static inline void bgp_attr_set_transit(struct attr *attr,
+					struct transit *transit)
+{
+	attr->transit = transit;
+}
+
+static inline struct cluster_list *bgp_attr_get_cluster(const struct attr *attr)
+{
+	return attr->cluster1;
+}
+
+static inline void bgp_attr_set_cluster(struct attr *attr,
+					struct cluster_list *cl)
+{
+	attr->cluster1 = cl;
+}
+
+static inline const struct bgp_route_evpn *
+bgp_attr_get_evpn_overlay(const struct attr *attr)
+{
+	return &attr->evpn_overlay;
+}
+
+static inline void bgp_attr_set_evpn_overlay(struct attr *attr,
+					     struct bgp_route_evpn *eo)
+{
+	memcpy(&attr->evpn_overlay, eo, sizeof(struct bgp_route_evpn));
+}
+
+static inline struct bgp_attr_encap_subtlv *
+bgp_attr_get_vnc_subtlvs(const struct attr *attr)
+{
+#ifdef ENABLE_BGP_VNC
+	return attr->vnc_subtlvs;
+#else
+	return NULL;
+#endif
+}
+
+static inline void
+bgp_attr_set_vnc_subtlvs(struct attr *attr,
+			 struct bgp_attr_encap_subtlv *vnc_subtlvs)
+{
+#ifdef ENABLE_BGP_VNC
+	attr->vnc_subtlvs = vnc_subtlvs;
+#endif
+}
+
+#endif /* _QUAGGA_BGP_ATTR_H */