diff options
Diffstat (limited to 'proto/ospf/lsalib.c')
| -rw-r--r-- | proto/ospf/lsalib.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/proto/ospf/lsalib.c b/proto/ospf/lsalib.c new file mode 100644 index 0000000..f74cb76 --- /dev/null +++ b/proto/ospf/lsalib.c @@ -0,0 +1,222 @@ +/* + * BIRD -- OSPF + * + * (c) 1999-2000 Ondrej Filip <feela@network.cz> + * + * Can be freely distributed and used under the terms of the GNU GPL. + */ + +#include "ospf.h" + +void +htonlsah(struct ospf_lsa_header *h, struct ospf_lsa_header *n) +{ + n->age=htons(h->age); + n->options=h->options; + n->type=h->type; + n->id=htonl(h->id); + n->rt=htonl(h->rt); + n->sn=htonl(h->sn); + n->checksum=htons(h->checksum); + n->length=htons(h->length); +}; + +void +ntohlsah(struct ospf_lsa_header *n, struct ospf_lsa_header *h) +{ + h->age=ntohs(n->age); + h->options=n->options; + h->type=n->type; + h->id=ntohl(n->id); + h->rt=ntohl(n->rt); + h->sn=ntohl(n->sn); + h->checksum=ntohs(n->checksum); + h->length=ntohs(n->length); +}; + +void +htonlsab(void *h, void *n, u8 type, u16 len) +{ + unsigned int i; + switch(type) + { + case LSA_T_RT: + { + struct ospf_lsa_rt *hrt, *nrt; + struct ospf_lsa_rt_link *hrtl,*nrtl; + + nrt=n; + hrt=h; + + nrt->VEB=hrt->VEB; + nrt->padding=0; + nrt->links=htons(hrt->links); + nrtl=(struct ospf_lsa_rt_link *)(nrt+1); + hrtl=(struct ospf_lsa_rt_link *)(hrt+1); + for(i=0;i<hrt->links;i++) + { + (nrtl+i)->id=htonl((hrtl+i)->id); + (nrtl+i)->data=htonl((hrtl+i)->data); + (nrtl+i)->type=(hrtl+i)->type; + (nrtl+i)->notos=(hrtl+i)->notos; + (nrtl+i)->metric=htons((hrtl+i)->metric); + } + break; + } + case LSA_T_NET: + { + u32 *hid,*nid; + + nid=n; + hid=h; + + for(i=0;i<(len/sizeof(u32));i++) + { + *(nid+i)=htonl(*(hid+i)); + } + break; + } + case LSA_T_SUM_NET: + case LSA_T_SUM_RT: + { + struct ospf_lsa_summ *hs, *ns; + struct ospf_lsa_summ_net *hn, *nn; + + hs=h; + ns=n; + + ns->netmask=htonl(hs->netmask); + + hn=(struct ospf_lsa_summ_net *)(hs+1); + nn=(struct ospf_lsa_summ_net *)(ns+1); + + for(i=0;i<((len-sizeof(struct ospf_lsa_summ))/ + sizeof(struct ospf_lsa_summ_net));i++) + { + (nn+i)->tos=(hn+i)->tos; + (nn+i)->metric=htons((hn+i)->metric); + (nn+i)->padding=0; + } + break; + } + case LSA_T_EXT: + { + struct ospf_lsa_ext *he, *ne; + struct ospf_lsa_ext_tos *ht, *nt; + + he=h; + ne=n; + + ne->netmask=htonl(he->netmask); + + ht=(struct ospf_lsa_ext_tos *)(he+1); + nt=(struct ospf_lsa_ext_tos *)(ne+1); + + for(i=0;i<((len-sizeof(struct ospf_lsa_ext))/ + sizeof(struct ospf_lsa_ext_tos));i++) + { + (nt+i)->etos=(ht+i)->etos; + (nt+i)->padding=0; + (nt+i)->metric=htons((ht+i)->metric); + (nt+i)->fwaddr=htonl((ht+i)->fwaddr); + (nt+i)->tag=htonl((ht+i)->tag); + } + break; + } + default: die("(hton): Unknown LSA\n"); + } +}; + +void +ntohlsab(void *n, void *h, u8 type, u16 len) +{ + unsigned int i; + switch(type) + { + case LSA_T_RT: + { + struct ospf_lsa_rt *hrt, *nrt; + struct ospf_lsa_rt_link *hrtl,*nrtl; + + nrt=n; + hrt=h; + + hrt->VEB=nrt->VEB; + hrt->padding=0; + hrt->links=ntohs(nrt->links); + nrtl=(struct ospf_lsa_rt_link *)(nrt+1); + hrtl=(struct ospf_lsa_rt_link *)(hrt+1); + for(i=0;i<hrt->links;i++) + { + (hrtl+i)->id=ntohl((nrtl+i)->id); + (hrtl+i)->data=ntohl((nrtl+i)->data); + (hrtl+i)->type=(nrtl+i)->type; + (hrtl+i)->notos=(nrtl+i)->notos; + (hrtl+i)->metric=ntohs((nrtl+i)->metric); + } + break; + } + case LSA_T_NET: + { + u32 *hid,*nid; + + hid=h; + nid=n; + + for(i=0;i<(len/sizeof(u32));i++) + { + *(hid+i)=ntohl(*(nid+i)); + } + break; + } + case LSA_T_SUM_NET: + case LSA_T_SUM_RT: + { + struct ospf_lsa_summ *hs, *ns; + struct ospf_lsa_summ_net *hn, *nn; + + hs=h; + ns=n; + + hs->netmask=ntohl(ns->netmask); + + hn=(struct ospf_lsa_summ_net *)(hs+1); + nn=(struct ospf_lsa_summ_net *)(ns+1); + + for(i=0;i<((len-sizeof(struct ospf_lsa_summ))/ + sizeof(struct ospf_lsa_summ_net));i++) + { + (hn+i)->tos=(nn+i)->tos; + (hn+i)->metric=ntohs((nn+i)->metric); + (hn+i)->padding=0; + } + break; + } + case LSA_T_EXT: + { + struct ospf_lsa_ext *he, *ne; + struct ospf_lsa_ext_tos *ht, *nt; + + he=h; + ne=n; + + he->netmask=ntohl(ne->netmask); + + ht=(struct ospf_lsa_ext_tos *)(he+1); + nt=(struct ospf_lsa_ext_tos *)(ne+1); + + for(i=0;i<((len-sizeof(struct ospf_lsa_ext))/ + sizeof(struct ospf_lsa_ext_tos));i++) + { + (ht+i)->etos=(nt+i)->etos; + (ht+i)->padding=0; + (ht+i)->metric=ntohs((nt+i)->metric); + (ht+i)->fwaddr=ntohl((nt+i)->fwaddr); + (ht+i)->tag=ntohl((nt+i)->tag); + } + break; + } + default: die("(ntoh): Unknown LSA\n"); + } +}; + |