Annotation of embedaddon/bird2/proto/ospf/lsalib.h, revision 1.1
1.1 ! misho 1: /*
! 2: * BIRD -- OSPF
! 3: *
! 4: * (c) 1999--2000 Ondrej Filip <feela@network.cz>
! 5: * (c) 2009--2014 Ondrej Zajicek <santiago@crfreenet.org>
! 6: * (c) 2009--2014 CZ.NIC z.s.p.o.
! 7: *
! 8: * Can be freely distributed and used under the terms of the GNU GPL.
! 9: */
! 10:
! 11: #ifndef _BIRD_OSPF_LSALIB_H_
! 12: #define _BIRD_OSPF_LSALIB_H_
! 13:
! 14: #ifdef CPU_BIG_ENDIAN
! 15: static inline void lsa_hton_hdr(struct ospf_lsa_header *h, struct ospf_lsa_header *n) { *n = *h; };
! 16: static inline void lsa_ntoh_hdr(struct ospf_lsa_header *n, struct ospf_lsa_header *h) { *h = *n; };
! 17: static inline void lsa_hton_body(void *h, void *n, u16 len) { ASSERT(h != n); memcpy(n, h, len); };
! 18: static inline void lsa_ntoh_body(void *n, void *h, u16 len) { ASSERT(n != h); memcpy(h, n, len); };
! 19: static inline void lsa_hton_body1(void *h, u16 len) { };
! 20: static inline void lsa_ntoh_body1(void *n, u16 len) { };
! 21: #else
! 22: void lsa_hton_hdr(struct ospf_lsa_header *h, struct ospf_lsa_header *n);
! 23: void lsa_ntoh_hdr(struct ospf_lsa_header *n, struct ospf_lsa_header *h);
! 24: void lsa_hton_body(void *h, void *n, u16 len);
! 25: void lsa_ntoh_body(void *n, void *h, u16 len);
! 26: static inline void lsa_hton_body1(void *h, u16 len) { lsa_hton_body(h, h, len); };
! 27: static inline void lsa_ntoh_body1(void *n, u16 len) { lsa_ntoh_body(n, n, len); };
! 28: #endif
! 29:
! 30: struct ospf_lsa_rt_walk {
! 31: struct top_hash_entry *en;
! 32: void *buf, *bufend;
! 33: int ospf2;
! 34: u16 type, metric;
! 35: u32 id, data, lif, nif;
! 36: };
! 37:
! 38:
! 39: void lsa_get_type_domain_(u32 type, u32 id, struct ospf_iface *ifa, u32 *otype, u32 *domain);
! 40:
! 41: static inline void lsa_get_type_domain(struct ospf_lsa_header *lsa, struct ospf_iface *ifa, u32 *otype, u32 *domain)
! 42: { lsa_get_type_domain_(lsa->type_raw, lsa->id, ifa, otype, domain); }
! 43:
! 44: static inline u32 lsa_get_etype(struct ospf_lsa_header *h, struct ospf_proto *p)
! 45: { return ospf_is_v2(p) ? (h->type_raw & LSA_T_V2_MASK) : h->type_raw; }
! 46:
! 47: int lsa_is_opaque(u32 type);
! 48: u32 lsa_get_opaque_type(u32 type);
! 49: int lsa_flooding_allowed(u32 type, u32 domain, struct ospf_iface *ifa);
! 50: int lsa_is_acceptable(u32 type, struct ospf_neighbor *n, struct ospf_proto *p);
! 51: void lsa_generate_checksum(struct ospf_lsa_header *lsa, const u8 *body);
! 52: u16 lsa_verify_checksum(const void *lsa_n, int lsa_len);
! 53:
! 54: #define CMP_NEWER 1
! 55: #define CMP_SAME 0
! 56: #define CMP_OLDER -1
! 57: int lsa_comp(struct ospf_lsa_header *l1, struct ospf_lsa_header *l2);
! 58:
! 59: struct ospf_tlv * lsa_get_tlv(struct top_hash_entry *en, uint type);
! 60:
! 61: static inline u32
! 62: lsa_get_tlv_u32(struct top_hash_entry *en, uint type)
! 63: {
! 64: struct ospf_tlv *tlv = lsa_get_tlv(en, type);
! 65: return (tlv && (tlv->length == 4)) ? tlv->data[0] : 0;
! 66: }
! 67:
! 68: void lsa_walk_rt_init(struct ospf_proto *po, struct top_hash_entry *act, struct ospf_lsa_rt_walk *rt);
! 69: int lsa_walk_rt(struct ospf_lsa_rt_walk *rt);
! 70: void lsa_parse_sum_net(struct top_hash_entry *en, int ospf2, int af, net_addr *net, u8 *pxopts, u32 *metric);
! 71: void lsa_parse_sum_rt(struct top_hash_entry *en, int ospf2, u32 *drid, u32 *metric, u32 *options);
! 72: void lsa_parse_ext(struct top_hash_entry *en, int ospf2, int af, struct ospf_lsa_ext_local *rt);
! 73: int lsa_validate(struct ospf_lsa_header *lsa, u32 lsa_type, int ospf2, void *body);
! 74:
! 75: static inline btime lsa_inst_age(struct top_hash_entry *en)
! 76: { return current_time() - en->inst_time; }
! 77:
! 78: #endif /* _BIRD_OSPF_LSALIB_H_ */
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