diff options
Diffstat (limited to 'nest/protocol.h')
| -rw-r--r-- | nest/protocol.h | 69 |
1 files changed, 59 insertions, 10 deletions
diff --git a/nest/protocol.h b/nest/protocol.h index 983ce75a..8a632715 100644 --- a/nest/protocol.h +++ b/nest/protocol.h @@ -94,13 +94,15 @@ struct proto_config { u32 router_id; /* Protocol specific router ID */ struct rtable_config *table; /* Table we're attached to */ struct filter *in_filter, *out_filter; /* Attached filters */ + struct proto_limit *in_limit; /* Limit for importing routes from protocol */ + struct proto_limit *out_limit; /* Limit for exporting routes to protocol */ /* Check proto_reconfigure() and proto_copy_config() after changing struct proto_config */ /* Protocol-specific data follow... */ }; - /* Protocol statistics */ +/* Protocol statistics */ struct proto_stats { /* Import - from protocol to core */ u32 imp_routes; /* Number of routes successfully imported to the (adjacent) routing table */ @@ -138,14 +140,16 @@ struct proto { u32 debug; /* Debugging flags */ u32 mrtdump; /* MRTDump flags */ unsigned preference; /* Default route preference */ - unsigned accept_ra_types; /* Which types of route announcements are accepted (RA_OPTIMAL or RA_ANY) */ - unsigned disabled; /* Manually disabled */ - unsigned proto_state; /* Protocol state machine (see below) */ - unsigned core_state; /* Core state machine (see below) */ - unsigned core_goal; /* State we want to reach (see below) */ - unsigned reconfiguring; /* We're shutting down due to reconfiguration */ - unsigned refeeding; /* We are refeeding (valid only if core_state == FS_FEEDING) */ - unsigned flushing; /* Protocol is flushed in current flush loop round */ + byte accept_ra_types; /* Which types of route announcements are accepted (RA_OPTIMAL or RA_ANY) */ + byte disabled; /* Manually disabled */ + byte proto_state; /* Protocol state machine (PS_*, see below) */ + byte core_state; /* Core state machine (FS_*, see below) */ + byte core_goal; /* State we want to reach (FS_*, see below) */ + byte reconfiguring; /* We're shutting down due to reconfiguration */ + byte refeeding; /* We are refeeding (valid only if core_state == FS_FEEDING) */ + byte flushing; /* Protocol is flushed in current flush loop round */ + byte down_sched; /* Shutdown is scheduled for later (PDS_*) */ + byte down_code; /* Reason for shutdown (PDC_* codes) */ u32 hash_key; /* Random key used for hashing of neighbors */ bird_clock_t last_state_change; /* Time of last state transition */ char *last_state_name_announced; /* Last state name we've announced to the user */ @@ -210,6 +214,18 @@ struct proto_spec { }; +#define PDS_DISABLE 1 /* Proto disable scheduled */ +#define PDS_RESTART 2 /* Proto restart scheduled */ + +#define PDC_CF_REMOVE 0x01 /* Removed in new config */ +#define PDC_CF_DISABLE 0x02 /* Disabled in new config */ +#define PDC_CF_RESTART 0x03 /* Restart due to reconfiguration */ +#define PDC_CMD_DISABLE 0x11 /* Result of disable command */ +#define PDC_CMD_RESTART 0x12 /* Result of restart command */ +#define PDC_IN_LIMIT_HIT 0x21 /* Route import limit reached */ +#define PDC_OUT_LIMIT_HIT 0x22 /* Route export limit reached - not implemented */ + + void *proto_new(struct proto_config *, unsigned size); void *proto_config_new(struct protocol *, unsigned size, int class); void proto_copy_config(struct proto_config *dest, struct proto_config *src); @@ -220,6 +236,7 @@ proto_copy_rest(struct proto_config *dest, struct proto_config *src, unsigned si { memcpy(dest + 1, src + 1, size - sizeof(struct proto_config)); } +void proto_show_limit(struct proto_limit *l, const char *dsc); void proto_show_basic_info(struct proto *p); void proto_cmd_show(struct proto *, unsigned int, int); @@ -348,6 +365,36 @@ void proto_notify_state(struct proto *p, unsigned state); extern struct proto_config *cf_dev_proto; + +/* + * Protocol limits + */ + +#define PLA_WARN 1 /* Issue log warning */ +#define PLA_BLOCK 2 /* Block new routes */ +#define PLA_RESTART 4 /* Force protocol restart */ +#define PLA_DISABLE 5 /* Shutdown and disable protocol */ + +#define PLS_INITIAL 0 /* Initial limit state after protocol start */ +#define PLS_ACTIVE 1 /* Limit was hit */ +#define PLS_BLOCKED 2 /* Limit is active and blocking new routes */ + +struct proto_limit { + u32 limit; /* Maximum number of prefixes */ + byte action; /* Action to take (PLA_*) */ + byte state; /* State of limit (PLS_*) */ +}; + +void proto_notify_limit(struct announce_hook *ah, struct proto_limit *l, u32 rt_count); + +static inline void +proto_reset_limit(struct proto_limit *l) +{ + if (l) + l->state = PLS_INITIAL; +} + + /* * Route Announcement Hook */ @@ -358,11 +405,13 @@ struct announce_hook { struct proto *proto; struct filter *in_filter; /* Input filter */ struct filter *out_filter; /* Output filter */ + struct proto_limit *in_limit; /* Input limit */ + struct proto_limit *out_limit; /* Output limit */ struct proto_stats *stats; /* Per-table protocol statistics */ struct announce_hook *next; /* Next hook for the same protocol */ }; -struct announce_hook *proto_add_announce_hook(struct proto *, struct rtable *, struct filter *, struct filter *, struct proto_stats *); +struct announce_hook *proto_add_announce_hook(struct proto *p, struct rtable *t, struct proto_stats *stats); struct announce_hook *proto_find_announce_hook(struct proto *p, struct rtable *t); #endif |