diff options
Diffstat (limited to 'bgpd/bgp_mpath.h')
| -rw-r--r-- | bgpd/bgp_mpath.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/bgpd/bgp_mpath.h b/bgpd/bgp_mpath.h index de6461fd..1dc2687e 100644 --- a/bgpd/bgp_mpath.h +++ b/bgpd/bgp_mpath.h @@ -27,6 +27,24 @@ /* BGP default maximum-paths */ #define BGP_DEFAULT_MAXPATHS 1 +/* Supplemental information linked to bgp_info for keeping track of + * multipath selections, lazily allocated to save memory + */ +struct bgp_info_mpath +{ + /* Points to the first multipath (on bestpath) or the next multipath */ + struct bgp_info_mpath *mp_next; + + /* Points to the previous multipath or NULL on bestpath */ + struct bgp_info_mpath *mp_prev; + + /* Points to bgp_info associated with this multipath info */ + struct bgp_info *mp_info; + + /* When attached to best path, the number of selected multipaths */ + u_int32_t mp_count; +}; + /* Functions to support maximum-paths configuration */ extern int bgp_maximum_paths_set (struct bgp *, afi_t, safi_t, int, u_int16_t); extern int bgp_maximum_paths_unset (struct bgp *, afi_t, safi_t, int); @@ -37,5 +55,19 @@ extern int bgp_maximum_paths_unset (struct bgp *, afi_t, safi_t, int); extern void bgp_mp_list_init (struct list *); extern void bgp_mp_list_clear (struct list *); extern void bgp_mp_list_add (struct list *, struct bgp_info *); +extern void bgp_info_mpath_update (struct bgp_node *, struct bgp_info *, + struct bgp_info *, struct list *, + struct bgp_maxpaths_cfg *); + +/* Unlink and free multipath information associated with a bgp_info */ +extern void bgp_info_mpath_dequeue (struct bgp_info *); +extern void bgp_info_mpath_free (struct bgp_info_mpath **); + +/* Walk list of multipaths associated with a best path */ +extern struct bgp_info *bgp_info_mpath_first (struct bgp_info *); +extern struct bgp_info *bgp_info_mpath_next (struct bgp_info *); + +/* Accessors for multipath information */ +extern u_int32_t bgp_info_mpath_count (struct bgp_info *); #endif /* _QUAGGA_BGP_MPATH_H */ |