diff options
| -rw-r--r-- | proto/ospf/ospf.c | 59 |
1 files changed, 58 insertions, 1 deletions
diff --git a/proto/ospf/ospf.c b/proto/ospf/ospf.c index 59b3614..bd8bfc9 100644 --- a/proto/ospf/ospf.c +++ b/proto/ospf/ospf.c @@ -23,6 +23,9 @@ #include "ospf.h" +#define IAMMASTER(x) ((x) & DBDES_MS) +#define INISET(x) ((x) & DBDES_I) + void rxmt_timer_hook(timer *timer) { @@ -581,12 +584,66 @@ ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p, { /* Duplicate packet */ debug("%s: Received duplicate dbdes from (%u)!\n", p->name, nrid); - return; + if(IAMMASTER(n->imms)) + { + return; + } + else + { + /* FIXME: Send response! */ + } + } + + if(IAMMASTER(ps->imms)!=IAMMASTER(n->myimms)) /* M/S bit differs */ + { + ospf_neigh_sm(n, INM_SEQMIS); + break; + } + + if(INISET(ps->imms)) /* I bit is set */ + { + ospf_neigh_sm(n, INM_SEQMIS); + break; + } + + if(ps->options!=n->options) /* Options differs */ + { + ospf_neigh_sm(n, INM_SEQMIS); + break; + } + + if(IAMMASTER(n->myimms)) + { + if(ps->ddseq!=n->dds) + { + ospf_neigh_sm(n, INM_SEQMIS); + break; + } } + else + { + if(ps->ddseq!=(n->dds+1)) + { + ospf_neigh_sm(n, INM_SEQMIS); + break; + } + } + + /* FIXME: Packet accepted, go on */ break; case NEIGHBOR_LOADING: case NEIGHBOR_FULL: + if((ps->imms==n->imms) && (ps->options=n->options) && + (ps->ddseq==n->dds)) /* Only duplicate are accepted */ + { + debug("%s: Received duplicate dbdes from (%u)!\n", p->name, nrid); + return; + } + else + { + ospf_neigh_sm(n, INM_SEQMIS); + } break; } } |