diff options
Diffstat (limited to 'isisd/isis_sr.h')
| -rw-r--r-- | isisd/isis_sr.h | 122 |
1 files changed, 30 insertions, 92 deletions
diff --git a/isisd/isis_sr.h b/isisd/isis_sr.h index 2e4f3a69f7..b012dfb00a 100644 --- a/isisd/isis_sr.h +++ b/isisd/isis_sr.h @@ -57,11 +57,25 @@ #define SRLB_UPPER_BOUND 15999 /* Segment Routing Data Base (SRDB) RB-Tree structure */ -PREDECL_RBTREE_UNIQ(srdb_node) -PREDECL_RBTREE_UNIQ(srdb_node_prefix) -PREDECL_RBTREE_UNIQ(srdb_area_prefix) PREDECL_RBTREE_UNIQ(srdb_prefix_cfg) +/* + * Segment Routing Prefix-SID information. + * + * This structure is intended to be embedded inside other structures that + * might or might not contain Prefix-SID information. + */ +struct isis_sr_psid_info { + /* Prefix-SID Sub-TLV information. */ + struct isis_prefix_sid sid; + + /* Resolved input/output label. */ + mpls_label_t label; + + /* Indicates whether the Prefix-SID is present or not. */ + bool present; +}; + /* Segment Routing Local Block allocation */ struct sr_local_block { bool active; @@ -106,85 +120,6 @@ struct sr_adjacency { struct isis_adjacency *adj; }; -/* Segment Routing Prefix-SID type. */ -enum sr_prefix_type { - ISIS_SR_PREFIX_LOCAL = 0, - ISIS_SR_PREFIX_REMOTE, -}; - -/* Segment Routing Nexthop Information. */ -struct sr_nexthop_info { - mpls_label_t label; - time_t uptime; -}; - -/* State of Object (SR-Node and SR-Prefix) stored in SRDB */ -enum srdb_state { - SRDB_STATE_VALIDATED = 0, - SRDB_STATE_NEW, - SRDB_STATE_MODIFIED, - SRDB_STATE_UNCHANGED -}; - -/* Segment Routing Prefix-SID. */ -struct sr_prefix { - /* SRDB RB-tree entries. */ - struct srdb_node_prefix_item node_entry; - struct srdb_area_prefix_item area_entry; - - /* IP prefix. */ - struct prefix prefix; - - /* SID value, algorithm and flags subTLVs. */ - struct isis_prefix_sid sid; - - /* Input label value. */ - mpls_label_t input_label; - - /* Prefix-SID type. */ - enum sr_prefix_type type; - union { - struct { - /* Information about this local Prefix-SID. */ - struct sr_nexthop_info info; - } local; - struct { - /* Route associated to this remote Prefix-SID. */ - struct isis_route_info *rinfo; - } remote; - } u; - - /* Backpointer to Segment Routing node. */ - struct sr_node *srn; - - /* SR-Prefix State used while the LSPDB is being parsed. */ - enum srdb_state state; -}; - -/* Segment Routing node. */ -struct sr_node { - /* SRDB RB-tree entry. */ - struct srdb_node_item entry; - - /* IS-IS level: ISIS_LEVEL1 or ISIS_LEVEL2. */ - int level; - - /* IS-IS node identifier. */ - uint8_t sysid[ISIS_SYS_ID_LEN]; - - /* Segment Routing node capabilities (SRGB, SR Algorithms) subTLVs. */ - struct isis_router_cap cap; - - /* List of Prefix-SIDs advertised by this node. */ - struct srdb_node_prefix_head prefix_sids; - - /* Backpointer to IS-IS area. */ - struct isis_area *area; - - /* SR-Node State used while the LSPDB is being parsed. */ - enum srdb_state state; -}; - /* SID type. NOTE: these values must be in sync with the YANG module. */ enum sr_sid_value_type { SR_SID_VALUE_TYPE_INDEX = 0, @@ -217,6 +152,9 @@ struct sr_prefix_cfg { /* SID last hop behavior. */ enum sr_last_hop_behavior last_hop_behavior; + /* Indicates whether the node flag must be explicitly unset. */ + bool n_flag_clear; + /* Does this Prefix-SID refer to a loopback address (Node-SID)? */ bool node_sid; @@ -235,12 +173,6 @@ struct isis_sr_db { /* List of local Adjacency-SIDs. */ struct list *adj_sids; - /* Segment Routing Node information per IS-IS level. */ - struct srdb_node_head sr_nodes[ISIS_LEVELS]; - - /* Segment Routing Prefix-SIDs per IS-IS level. */ - struct srdb_area_prefix_head prefix_sids[ISIS_LEVELS]; - /* Management of SRLB & SRGB allocation */ struct sr_local_block srlb; bool srgb_active; @@ -267,6 +199,14 @@ struct isis_sr_db { }; /* Prototypes. */ +extern struct isis_sr_block *isis_sr_find_srgb(struct lspdb_head *lspdb, + const uint8_t *sysid); +extern mpls_label_t sr_prefix_in_label(struct isis_area *area, + struct isis_prefix_sid *psid, + bool local); +extern mpls_label_t sr_prefix_out_label(struct lspdb_head *lspdb, int family, + struct isis_prefix_sid *psid, + const uint8_t *nh_sysid, bool last_hop); extern int isis_sr_cfg_srgb_update(struct isis_area *area, uint32_t lower_bound, uint32_t upper_bound); extern int isis_sr_cfg_srlb_update(struct isis_area *area, uint32_t lower_bound, @@ -279,16 +219,14 @@ isis_sr_cfg_prefix_find(struct isis_area *area, union prefixconstptr prefix); extern void isis_sr_prefix_cfg2subtlv(const struct sr_prefix_cfg *pcfg, bool external, struct isis_prefix_sid *psid); -extern void isis_sr_nexthop_update(struct sr_nexthop_info *srnh, - mpls_label_t label); -extern void isis_sr_nexthop_reset(struct sr_nexthop_info *srnh); extern void sr_adj_sid_add_single(struct isis_adjacency *adj, int family, bool backup, struct list *nexthops); extern struct sr_adjacency *isis_sr_adj_sid_find(struct isis_adjacency *adj, int family, enum sr_adj_type type); extern void isis_area_delete_backup_adj_sids(struct isis_area *area, int level); -extern void isis_area_verify_sr(struct isis_area *area); +extern char *sr_op2str(char *buf, size_t size, mpls_label_t label_in, + mpls_label_t label_out); extern int isis_sr_start(struct isis_area *area); extern void isis_sr_stop(struct isis_area *area); extern void isis_sr_area_init(struct isis_area *area); |