int allow_local_as; /* Allow that number of local ASNs in incoming AS_PATHs */
int allow_local_pref; /* Allow LOCAL_PREF in EBGP sessions */
int gr_mode; /* Graceful restart mode (BGP_GR_*) */
+ int llgr_mode; /* Long-lived graceful restart mode (BGP_LLGR_*) */
int setkey; /* Set MD5 password to system SA/SP database */
/* Times below are in seconds */
unsigned gr_time; /* Graceful restart timeout */
+ unsigned llgr_time; /* Long-lived graceful restart stale time */
unsigned connect_delay_time; /* Minimum delay between connect attempts */
unsigned connect_retry_time; /* Timeout for connect attempts */
unsigned hold_time, initial_hold_time;
const struct bgp_af_desc *desc;
ip_addr next_hop_addr; /* Local address for NEXT_HOP attribute */
- u8 next_hop_self; /* Always set next hop to local IP address */
- u8 next_hop_keep; /* Do not touch next hop attribute */
+ u8 next_hop_self; /* Always set next hop to local IP address (NH_*) */
+ u8 next_hop_keep; /* Do not modify next hop attribute (NH_*) */
+ u8 mandatory; /* Channel is mandatory in capability negotiation */
u8 missing_lladdr; /* What we will do when we don' know link-local addr, see MLL_* */
u8 gw_mode; /* How we compute route gateway from next_hop attr, see GW_* */
u8 secondary; /* Accept also non-best routes (i.e. RA_ACCEPTED) */
u8 gr_able; /* Allow full graceful restart for the channel */
+ u8 llgr_able; /* Allow full long-lived GR for the channel */
+ uint llgr_time; /* Long-lived graceful restart stale time */
u8 ext_next_hop; /* Allow both IPv4 and IPv6 next hops */
u8 add_path; /* Use ADD-PATH extension [RFC 7911] */
+ u8 import_table; /* Use c.in_table as Adj-RIB-In */
uint rest[0]; /* Remaining items are reconfigured separately */
struct rtable_config *igp_table_ip4; /* Table for recursive IPv4 next hop lookups */
struct rtable_config *igp_table_ip6; /* Table for recursive IPv6 next hop lookups */
};
-#define MLL_SELF 1
-#define MLL_DROP 2
-#define MLL_IGNORE 3
+#define NH_NO 0
+#define NH_ALL 1
+#define NH_IBGP 2
+#define NH_EBGP 3
-#define GW_DIRECT 1
-#define GW_RECURSIVE 2
+#define MLL_SELF 1
+#define MLL_DROP 2
+#define MLL_IGNORE 3
+
+#define GW_DIRECT 1
+#define GW_RECURSIVE 2
#define BGP_ADD_PATH_RX 1
#define BGP_ADD_PATH_TX 2
/* For GR capability per-AF flags */
#define BGP_GRF_FORWARDING 0x80
+#define BGP_LLGR_ABLE 1
+#define BGP_LLGR_AWARE 2
+
+#define BGP_LLGRF_FORWARDING 0x80
+
+#define BGP_GRS_NONE 0 /* No GR */
+#define BGP_GRS_ACTIVE 1 /* Graceful restart per RFC 4724 */
+#define BGP_GRS_LLGR 2 /* Long-lived GR phase (stale timer active) */
+
+#define BGP_BFD_GRACEFUL 2 /* BFD down triggers graceful restart */
+
struct bgp_af_caps {
u32 afi;
u8 ready; /* Multiprotocol capability, RFC 4760 */
u8 gr_able; /* Graceful restart support, RFC 4724 */
u8 gr_af_flags; /* Graceful restart per-AF flags */
+ u8 llgr_able; /* Long-lived GR, RFC draft */
+ u32 llgr_time; /* Long-lived GR stale time */
+ u8 llgr_flags; /* Long-lived GR per-AF flags */
u8 ext_next_hop; /* Extended IPv6 next hop, RFC 5549 */
u8 add_path; /* Multiple paths support, RFC 7911 */
};
u8 gr_flags; /* Graceful restart flags */
u16 gr_time; /* Graceful restart time in seconds */
+ u8 llgr_aware; /* Long-lived GR capability, RFC draft */
+
u16 af_count; /* Number of af_data items */
+ u16 length; /* Length of capabilities in OPEN msg */
struct bgp_af_caps af_data[0]; /* Per-AF capability data */
};
u8 route_refresh; /* Route refresh allowed to send [RFC 2918] */
u8 enhanced_refresh; /* Enhanced refresh is negotiated [RFC 7313] */
u8 gr_ready; /* Neighbor could do graceful restart */
+ u8 llgr_ready; /* Neighbor could do Long-lived GR, implies gr_ready */
u8 gr_active_num; /* Neighbor is doing GR, number of active channels */
u8 channel_count; /* Number of active channels */
+ u8 summary_add_path_rx; /* Summary state of ADD_PATH RX w.r.t active channels */
u32 *afi_map; /* Map channel index -> AFI */
struct bgp_channel **channel_map; /* Map channel index -> channel */
struct bgp_conn *conn; /* Connection we have established */
/* Rest are BGP specific data */
struct bgp_channel_config *cf;
- pool *pool; /* XXXX */
u32 afi;
u32 index;
const struct bgp_af_desc *desc;
+ rtable *igp_table_ip4; /* Table for recursive IPv4 next hop lookups */
+ rtable *igp_table_ip6; /* Table for recursive IPv6 next hop lookups */
+
+ /* Rest are zeroed when down */
+ pool *pool;
HASH(struct bgp_bucket) bucket_hash; /* Hash table of route buckets */
struct bgp_bucket *withdraw_bucket; /* Withdrawn routes */
list bucket_queue; /* Queue of buckets to send (struct bgp_bucket) */
HASH(struct bgp_prefix) prefix_hash; /* Prefixes to be sent */
slab *prefix_slab; /* Slab holding prefix nodes */
- rtable *igp_table_ip4; /* Table for recursive IPv4 next hop lookups */
- rtable *igp_table_ip6; /* Table for recursive IPv6 next hop lookups */
ip_addr next_hop_addr; /* Local address for NEXT_HOP attribute */
ip_addr link_addr; /* Link-local version of next_hop_addr */
u32 packets_to_send; /* Bitmap of packet types to be sent */
+ u8 ext_next_hop; /* Session allows both IPv4 and IPv6 next hops */
+
u8 gr_ready; /* Neighbor could do GR on this AF */
- u8 gr_active; /* Neighbor is doing GR and keeping fwd state */
+ u8 gr_active; /* Neighbor is doing GR (BGP_GRS_*) */
- u8 ext_next_hop; /* Session allows both IPv4 and IPv6 next hops */
+ timer *stale_timer; /* Long-lived stale timer for LLGR */
+ u32 stale_time; /* Stored LLGR stale time from last session */
u8 add_path_rx; /* Session expects receive of ADD-PATH extended NLRI */
u8 add_path_tx; /* Session expects transmit of ADD-PATH extended NLRI */
struct bgp_channel *channel;
struct linpool *pool;
+ int mp_reach;
int as4_session;
int add_path;
int mpls;
int bgp_rte_better(struct rte *, struct rte *);
int bgp_rte_mergable(rte *pri, rte *sec);
int bgp_rte_recalculate(rtable *table, net *net, rte *new, rte *old, rte *old_best);
+struct rte *bgp_rte_modify_stale(struct rte *r, struct linpool *pool);
void bgp_rt_notify(struct proto *P, struct channel *C, net *n, rte *new, rte *old);
-int bgp_import_control(struct proto *, struct rte **, struct linpool *);
+int bgp_preexport(struct proto *, struct rte **, struct linpool *);
int bgp_get_attr(struct eattr *e, byte *buf, int buflen);
void bgp_get_route_info(struct rte *, byte *buf);
/* packets.c */
-void mrt_dump_bgp_state_change(struct bgp_conn *conn, unsigned old, unsigned new);
+void bgp_dump_state_change(struct bgp_conn *conn, uint old, uint new);
const struct bgp_af_desc *bgp_get_af_desc(u32 afi);
const struct bgp_af_caps *bgp_find_af_caps(struct bgp_caps *caps, u32 afi);
void bgp_schedule_packet(struct bgp_conn *conn, struct bgp_channel *c, int type);
#define BGP_COMM_NO_ADVERTISE 0xffffff02 /* Don't export at all */
#define BGP_COMM_NO_EXPORT_SUBCONFED 0xffffff03 /* NO_EXPORT even in local confederation */
+#define BGP_COMM_LLGR_STALE 0xffff0006 /* Route is stale according to LLGR */
+#define BGP_COMM_NO_LLGR 0xffff0007 /* Do not treat the route according to LLGR */
+
/* Origins */
#define ORIGIN_IGP 0
projects / thirdparty / bird.git / blobdiff