mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-11-17 16:48:43 +00:00
1a2ad348f6
Implement OSPFv2 (RFC 3623) and OSPFv3 (RFC 5187) graceful restart, for both restarting and helper sides. Graceful restart is initiated by 'graceful down' command.
79 lines
3.2 KiB
C
79 lines
3.2 KiB
C
/*
|
|
* BIRD -- OSPF
|
|
*
|
|
* (c) 1999--2000 Ondrej Filip <feela@network.cz>
|
|
* (c) 2009--2014 Ondrej Zajicek <santiago@crfreenet.org>
|
|
* (c) 2009--2014 CZ.NIC z.s.p.o.
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
#ifndef _BIRD_OSPF_LSALIB_H_
|
|
#define _BIRD_OSPF_LSALIB_H_
|
|
|
|
#ifdef CPU_BIG_ENDIAN
|
|
static inline void lsa_hton_hdr(struct ospf_lsa_header *h, struct ospf_lsa_header *n) { *n = *h; };
|
|
static inline void lsa_ntoh_hdr(struct ospf_lsa_header *n, struct ospf_lsa_header *h) { *h = *n; };
|
|
static inline void lsa_hton_body(void *h, void *n, u16 len) { ASSERT(h != n); memcpy(n, h, len); };
|
|
static inline void lsa_ntoh_body(void *n, void *h, u16 len) { ASSERT(n != h); memcpy(h, n, len); };
|
|
static inline void lsa_hton_body1(void *h, u16 len) { };
|
|
static inline void lsa_ntoh_body1(void *n, u16 len) { };
|
|
#else
|
|
void lsa_hton_hdr(struct ospf_lsa_header *h, struct ospf_lsa_header *n);
|
|
void lsa_ntoh_hdr(struct ospf_lsa_header *n, struct ospf_lsa_header *h);
|
|
void lsa_hton_body(void *h, void *n, u16 len);
|
|
void lsa_ntoh_body(void *n, void *h, u16 len);
|
|
static inline void lsa_hton_body1(void *h, u16 len) { lsa_hton_body(h, h, len); };
|
|
static inline void lsa_ntoh_body1(void *n, u16 len) { lsa_ntoh_body(n, n, len); };
|
|
#endif
|
|
|
|
struct ospf_lsa_rt_walk {
|
|
struct top_hash_entry *en;
|
|
void *buf, *bufend;
|
|
int ospf2;
|
|
u16 type, metric;
|
|
u32 id, data, lif, nif;
|
|
};
|
|
|
|
|
|
void lsa_get_type_domain_(u32 type, u32 id, struct ospf_iface *ifa, u32 *otype, u32 *domain);
|
|
|
|
static inline void lsa_get_type_domain(struct ospf_lsa_header *lsa, struct ospf_iface *ifa, u32 *otype, u32 *domain)
|
|
{ lsa_get_type_domain_(lsa->type_raw, lsa->id, ifa, otype, domain); }
|
|
|
|
static inline u32 lsa_get_etype(struct ospf_lsa_header *h, struct ospf_proto *p)
|
|
{ return ospf_is_v2(p) ? (h->type_raw & LSA_T_V2_MASK) : h->type_raw; }
|
|
|
|
int lsa_is_opaque(u32 type);
|
|
u32 lsa_get_opaque_type(u32 type);
|
|
int lsa_flooding_allowed(u32 type, u32 domain, struct ospf_iface *ifa);
|
|
int lsa_is_acceptable(u32 type, struct ospf_neighbor *n, struct ospf_proto *p);
|
|
void lsa_generate_checksum(struct ospf_lsa_header *lsa, const u8 *body);
|
|
u16 lsa_verify_checksum(const void *lsa_n, int lsa_len);
|
|
|
|
#define CMP_NEWER 1
|
|
#define CMP_SAME 0
|
|
#define CMP_OLDER -1
|
|
int lsa_comp(struct ospf_lsa_header *l1, struct ospf_lsa_header *l2);
|
|
|
|
struct ospf_tlv * lsa_get_tlv(struct top_hash_entry *en, uint type);
|
|
|
|
static inline u32
|
|
lsa_get_tlv_u32(struct top_hash_entry *en, uint type)
|
|
{
|
|
struct ospf_tlv *tlv = lsa_get_tlv(en, type);
|
|
return (tlv && (tlv->length == 4)) ? tlv->data[0] : 0;
|
|
}
|
|
|
|
void lsa_walk_rt_init(struct ospf_proto *po, struct top_hash_entry *act, struct ospf_lsa_rt_walk *rt);
|
|
int lsa_walk_rt(struct ospf_lsa_rt_walk *rt);
|
|
void lsa_parse_sum_net(struct top_hash_entry *en, int ospf2, int af, net_addr *net, u8 *pxopts, u32 *metric);
|
|
void lsa_parse_sum_rt(struct top_hash_entry *en, int ospf2, u32 *drid, u32 *metric, u32 *options);
|
|
void lsa_parse_ext(struct top_hash_entry *en, int ospf2, int af, struct ospf_lsa_ext_local *rt);
|
|
int lsa_validate(struct ospf_lsa_header *lsa, u32 lsa_type, int ospf2, void *body);
|
|
|
|
static inline btime lsa_inst_age(struct top_hash_entry *en)
|
|
{ return current_time() - en->inst_time; }
|
|
|
|
#endif /* _BIRD_OSPF_LSALIB_H_ */
|