diff options
Diffstat (limited to 'ospfd/ospf_spf.h')
| -rw-r--r-- | ospfd/ospf_spf.h | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/ospfd/ospf_spf.h b/ospfd/ospf_spf.h index 73120000..928d98b7 100644 --- a/ospfd/ospf_spf.h +++ b/ospfd/ospf_spf.h @@ -20,29 +20,34 @@ * 02111-1307, USA. */ -#define OSPF_VERTEX_ROUTER 1 -#define OSPF_VERTEX_NETWORK 2 +/* values for vertex->type */ +#define OSPF_VERTEX_ROUTER 1 /* for a Router-LSA */ +#define OSPF_VERTEX_NETWORK 2 /* for a Network-LSA */ +/* values for vertex->flags */ #define OSPF_VERTEX_PROCESSED 0x01 +/* The "root" is the node running the SPF calculation */ +/* A router or network in an area */ struct vertex { u_char flags; - u_char type; - struct in_addr id; - struct lsa_header *lsa; - u_int32_t distance; + u_char type; /* copied from LSA header */ + struct in_addr id; /* copied from LSA header */ + struct lsa_header *lsa; /* Router or Network LSA */ + u_int32_t distance; /* from root to this vertex */ int backlink; /* link index of back-link */ - list child; - list nexthop; + list child; /* list of vertex: children in SPF tree*/ + list nexthop; /* list of vertex_nexthop from root to this vertex */ }; +/* A nexthop taken on the root node to get to this (parent) vertex */ struct vertex_nexthop { - struct ospf_interface *oi; - struct in_addr router; - struct vertex *parent; + struct ospf_interface *oi; /* output intf on root node */ + struct in_addr router; /* router address to send to */ + struct vertex *parent; /* parent in SPF tree */ }; void ospf_spf_calculate_schedule (struct ospf *); |