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Minor changes and bug fixes. Preparing for Exchange and higher states.

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This commit is contained in:
Ondrej Filip 1999-10-19 16:13:06 +00:00
parent 96f1b8ba10
commit c2250f91c7
2 changed files with 88 additions and 76 deletions
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157
proto/ospf/ospf.c
View file

@ -60,79 +60,6 @@ neigh_chstate(struct ospf_neighbor *n, u8 state)
n->state=state; n->state=state;
} }
void
ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p,
struct ospf_iface *ifa, u16 size)
{
u32 nrid, myrid;
struct ospf_neighbor *n;
u8 i;
nrid=ntohl(((struct ospf_packet *)ps)->routerid);
myrid=p->cf->global->router_id;
if((n=find_neigh(ifa, nrid))==NULL)
{
debug("%s: Received dbdes from unknown neigbor! (%u)\n", p->name,
nrid);
return ;
}
/* FIXME: Now, I should test MTU */
switch(n->state)
{
case NEIGHBOR_DOWN:
case NEIGHBOR_ATTEMPT:
case NEIGHBOR_2WAY:
debug("%s: Received dbdes from %u in bad state. (%u)\n", p->name, nrid);
return;
break;
case NEIGHBOR_INIT:
/*
* RFC2328 says, that I sould start SM with 2-Way received.
* It's to complicated right now. So I'll rather ignore it and
* wait for a hello packet. FIXME
*/
return;
break;
case NEIGHBOR_EXSTART:
if(size!=sizeof(struct ospf_dbdes_packet))
{
debug("%s: Received bas dbdes from %u in exstart state.\n",
p->name, nrid);
return;
}
if(ps->imms==(DBDES_I|DBDES_M|DBDES_MS) && n->rid > myrid)
{
/* I'm slave! */
n->dds=ps->ddseq;
n->options=ps->options;
n->myimms=(n->myimms && DBDES_M);
debug("%s: I'm slave to %u. \n", p->name, nrid);
/* FIXME Negotiation done */
}
if(((ps->imms | DBDES_M)== DBDES_M) && (n->rid < myrid) &&
(n->dds == ps->ddseq))
{
/* I'm master! */
n->options=ps->options;
debug("%s: I'm master to %u. \n", p->name, nrid);
/* FIXME Negotiation done */
}
break;
case NEIGHBOR_EXCHANGE:
break;
case NEIGHBOR_LOADING:
case NEIGHBOR_FULL:
break;
}
n->ddr=ps->ddseq;
n->imms=ps->imms;
}
/* Try to build neighbor adjacency (if does not exists) */ /* Try to build neighbor adjacency (if does not exists) */
void void
@ -580,6 +507,90 @@ ospf_int_sm(struct ospf_iface *ifa, int event)
} }
void
ospf_dbdes_rx(struct ospf_dbdes_packet *ps, struct proto *p,
struct ospf_iface *ifa, u16 size)
{
u32 nrid, myrid;
struct ospf_neighbor *n;
u8 i;
nrid=ntohl(((struct ospf_packet *)ps)->routerid);
myrid=p->cf->global->router_id;
if((n=find_neigh(ifa, nrid))==NULL)
{
debug("%s: Received dbdes from unknown neigbor! (%u)\n", p->name,
nrid);
return ;
}
if(ifa->iface->mtu<size)
{
debug("%s: Received dbdes larger than MTU from (%u)!\n", p->name, nrid);
return ;
}
switch(n->state)
{
case NEIGHBOR_DOWN:
case NEIGHBOR_ATTEMPT:
case NEIGHBOR_2WAY:
debug("%s: Received dbdes from %u in bad state. (%u)\n", p->name, nrid);
return;
break;
case NEIGHBOR_INIT:
ospf_neigh_sm(n, INM_2WAYREC);
if(n->state!=NEIGHBOR_EXSTART) return;
case NEIGHBOR_EXSTART:
if(size!=sizeof(struct ospf_dbdes_packet))
{
debug("%s: Received bad dbdes from %u in exstart state.\n",
p->name, nrid);
return;
}
if(ps->imms==(DBDES_I|DBDES_M|DBDES_MS) && (n->rid > myrid) &&
(size == sizeof(struct ospf_dbdes_packet)))
{
/* I'm slave! */
n->dds=ps->ddseq;
n->options=ps->options;
n->myimms=(n->myimms && DBDES_M);
n->ddr=ps->ddseq;
n->imms=ps->imms;
debug("%s: I'm slave to %u. \n", p->name, nrid);
ospf_neigh_sm(n, INM_NEGDONE);
}
if(((ps->imms | DBDES_M)== DBDES_M) && (n->rid < myrid) &&
(n->dds == ps->ddseq) && (size == sizeof(struct ospf_dbdes_packet)))
{
/* I'm master! */
n->options=ps->options;
n->ddr=ps->ddseq;
n->imms=ps->imms;
debug("%s: I'm master to %u. \n", p->name, nrid);
ospf_neigh_sm(n, INM_NEGDONE);
}
break;
case NEIGHBOR_EXCHANGE:
if((ps->imms==n->imms) && (ps->options=n->options) &&
(ps->ddseq==n->dds))
{
/* Duplicate packet */
debug("%s: Received duplicate dbdes from (%u)!\n", p->name, nrid);
return;
}
break;
case NEIGHBOR_LOADING:
case NEIGHBOR_FULL:
break;
}
}
void void
ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p, ospf_hello_rx(struct ospf_hello_packet *ps, struct proto *p,
struct ospf_iface *ifa, int size) struct ospf_iface *ifa, int size)

7
proto/ospf/ospf.h
View file

@ -153,9 +153,10 @@ struct ospf_neighbor
#define NEIGHBOR_FULL 7 #define NEIGHBOR_FULL 7
timer *inactim; /* Inactivity timer */ timer *inactim; /* Inactivity timer */
u8 imms; /* I, M, Master/slave */ u8 imms; /* I, M, Master/slave */
u8 myimms; u32 dds; /* DD Sequence number being sent */
u32 dds; /* DD Sequence number being sentg */ u32 ddr; /* last Dat Des packet received */
u32 ddr; /* last Dat Des packet */ u8 myimms; /* I, M MS received */
u8 myoptions; /* Options received */
u32 rid; /* Router ID */ u32 rid; /* Router ID */
u8 priority; /* Priority */ u8 priority; /* Priority */
u8 options; /* Options */ u8 options; /* Options */