Annotation of embedaddon/bird/sysdep/unix/krt.h, revision 1.1
1.1 ! misho 1: /*
! 2: * BIRD -- UNIX Kernel Route Syncer
! 3: *
! 4: * (c) 1998--2000 Martin Mares <mj@ucw.cz>
! 5: *
! 6: * Can be freely distributed and used under the terms of the GNU GPL.
! 7: */
! 8:
! 9: #ifndef _BIRD_KRT_H_
! 10: #define _BIRD_KRT_H_
! 11:
! 12: struct config;
! 13: struct krt_config;
! 14: struct krt_proto;
! 15: struct kif_config;
! 16: struct kif_proto;
! 17:
! 18: #include "lib/krt-sys.h"
! 19:
! 20: /* Flags stored in net->n.flags, rest are in nest/route.h */
! 21:
! 22: #define KRF_VERDICT_MASK 0x0f
! 23: #define KRF_CREATE 0 /* Not seen in kernel table */
! 24: #define KRF_SEEN 1 /* Seen in kernel table during last scan */
! 25: #define KRF_UPDATE 2 /* Need to update this entry */
! 26: #define KRF_DELETE 3 /* Should be deleted */
! 27: #define KRF_IGNORE 4 /* To be ignored */
! 28:
! 29: #define KRT_DEFAULT_ECMP_LIMIT 16
! 30:
! 31: #define EA_KRT_SOURCE EA_CODE(EAP_KRT, 0)
! 32: #define EA_KRT_METRIC EA_CODE(EAP_KRT, 1)
! 33:
! 34: /* Whenever we recognize our own routes, we allow learing of foreign routes */
! 35:
! 36: #ifdef CONFIG_SELF_CONSCIOUS
! 37: #define KRT_ALLOW_LEARN
! 38: #endif
! 39:
! 40: /* krt.c */
! 41:
! 42: extern struct protocol proto_unix_kernel;
! 43:
! 44: struct krt_config {
! 45: struct proto_config c;
! 46: struct krt_params sys; /* Sysdep params */
! 47: int persist; /* Keep routes when we exit */
! 48: int scan_time; /* How often we re-scan routes */
! 49: int learn; /* Learn routes from other sources */
! 50: int devroutes; /* Allow export of device routes */
! 51: int graceful_restart; /* Regard graceful restart recovery */
! 52: int merge_paths; /* Exported routes are merged for ECMP */
! 53: };
! 54:
! 55: struct krt_proto {
! 56: struct proto p;
! 57: struct krt_state sys; /* Sysdep state */
! 58:
! 59: #ifdef KRT_ALLOW_LEARN
! 60: struct rtable krt_table; /* Internal table of inherited routes */
! 61: #endif
! 62:
! 63: #ifndef CONFIG_ALL_TABLES_AT_ONCE
! 64: timer *scan_timer;
! 65: #endif
! 66:
! 67: node krt_node; /* Node in krt_proto_list */
! 68: byte ready; /* Initial feed has been finished */
! 69: byte initialized; /* First scan has been finished */
! 70: byte reload; /* Next scan is doing reload */
! 71: };
! 72:
! 73: extern pool *krt_pool;
! 74:
! 75: #define KRT_CF ((struct krt_config *)p->p.cf)
! 76:
! 77: #define KRT_TRACE(pr, fl, msg, args...) do { \
! 78: DBG("KRT: " msg "\n" , ## args); \
! 79: if (pr->p.debug & fl) \
! 80: { log(L_TRACE "%s: " msg, pr->p.name , ## args); } } while(0)
! 81:
! 82: struct proto_config * kif_init_config(int class);
! 83: void kif_request_scan(void);
! 84: void krt_got_route(struct krt_proto *p, struct rte *e);
! 85: void krt_got_route_async(struct krt_proto *p, struct rte *e, int new);
! 86:
! 87: /* Values for rte->u.krt_sync.src */
! 88: #define KRT_SRC_UNKNOWN -1 /* Nobody knows */
! 89: #define KRT_SRC_BIRD 0 /* Our route (not passed in async mode) */
! 90: #define KRT_SRC_REDIRECT 1 /* Redirect route, delete it */
! 91: #define KRT_SRC_ALIEN 2 /* Route installed by someone else */
! 92: #define KRT_SRC_KERNEL 3 /* Kernel routes, are ignored by krt syncer */
! 93:
! 94: extern struct protocol proto_unix_iface;
! 95:
! 96: struct kif_primary_item {
! 97: node n;
! 98: byte *pattern;
! 99: ip_addr prefix;
! 100: int pxlen;
! 101: };
! 102:
! 103: struct kif_config {
! 104: struct proto_config c;
! 105: struct kif_params sys; /* Sysdep params */
! 106: int scan_time; /* How often we re-scan interfaces */
! 107: list primary; /* Preferences for primary addresses (struct kif_primary_item) */
! 108: };
! 109:
! 110: struct kif_proto {
! 111: struct proto p;
! 112: struct kif_state sys; /* Sysdep state */
! 113: };
! 114:
! 115: struct kif_proto *kif_proto;
! 116:
! 117: #define KIF_CF ((struct kif_config *)p->p.cf)
! 118:
! 119: struct proto_config * krt_init_config(int class);
! 120:
! 121:
! 122: /* krt sysdep */
! 123:
! 124: void krt_sys_io_init(void);
! 125: void krt_sys_init(struct krt_proto *);
! 126: int krt_sys_start(struct krt_proto *);
! 127: void krt_sys_shutdown(struct krt_proto *);
! 128: int krt_sys_reconfigure(struct krt_proto *p UNUSED, struct krt_config *n, struct krt_config *o);
! 129:
! 130: void krt_sys_preconfig(struct config *);
! 131: void krt_sys_postconfig(struct krt_config *);
! 132: void krt_sys_init_config(struct krt_config *);
! 133: void krt_sys_copy_config(struct krt_config *, struct krt_config *);
! 134:
! 135: int krt_capable(rte *e);
! 136: void krt_do_scan(struct krt_proto *);
! 137: void krt_replace_rte(struct krt_proto *p, net *n, rte *new, rte *old, struct ea_list *eattrs);
! 138: int krt_sys_get_attr(eattr *a, byte *buf, int buflen);
! 139:
! 140:
! 141: /* kif sysdep */
! 142:
! 143: void kif_sys_init(struct kif_proto *);
! 144: void kif_sys_start(struct kif_proto *);
! 145: void kif_sys_shutdown(struct kif_proto *);
! 146: int kif_sys_reconfigure(struct kif_proto *, struct kif_config *, struct kif_config *);
! 147:
! 148: void kif_sys_init_config(struct kif_config *);
! 149: void kif_sys_copy_config(struct kif_config *, struct kif_config *);
! 150:
! 151: void kif_do_scan(struct kif_proto *);
! 152:
! 153: struct ifa *kif_get_primary_ip(struct iface *i);
! 154:
! 155: #endif
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