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labs
BIRD Internet Routing Daemon
Commits
296ecb56
Commit
296ecb56
authored
May 11, 1999
by
Ondřej Filip
Browse files
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Plain Diff
OSPF RX implementation starts....
parent
1b16029c
Changes
2
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Inline
Side-by-side
Showing
2 changed files
with
128 additions
and
1 deletion
+128
-1
proto/ospf/ospf.c
proto/ospf/ospf.c
+100
-1
proto/ospf/ospf.h
proto/ospf/ospf.h
+28
-0
No files found.
proto/ospf/ospf.c
View file @
296ecb56
...
...
@@ -22,11 +22,37 @@
#include "ospf.h"
void
ospf_hello_rx
(
struct
ospf_hello_packet
*
ps
,
struct
proto
*
p
,
struct
ospf_iface
*
ifa
)
{
switch
(
ifa
->
state
)
{
case
OSPF_IS_DOWN
:
die
(
"%s: Iface %s in down state?"
,
p
->
name
,
ifa
->
iface
->
name
);
break
;
case
OSPF_IS_WAITING
:
DBG
(
p
->
name
);
DBG
(
": Neighbour? on iface "
);
DBG
(
ifa
->
iface
->
name
);
DBG
(
"
\n
"
);
break
;
default:
die
(
"%s: Iface %s in unknown state?"
,
p
->
name
,
ifa
->
iface
->
name
);
break
;
}
}
int
ospf_rx_hook
(
sock
*
sk
,
int
size
)
{
#ifndef IPV6
struct
ospf_packet
*
ps
;
struct
ospf_iface
*
ifa
;
struct
proto
*
p
;
int
i
;
u8
*
pu8
;
ifa
=
(
struct
ospf_iface
*
)(
sk
->
data
);
...
...
@@ -35,6 +61,71 @@ ospf_rx_hook(sock *sk, int size)
DBG
(
": RX_Hook called on interface "
);
DBG
(
sk
->
iface
->
name
);
DBG
(
".
\n
"
);
ps
=
(
struct
ospf_packet
*
)(
sk
->
rbuf
+
5
*
4
);
if
(
size
<=
(
20
+
sizeof
(
struct
ospf_packet
)))
{
log
(
"%s: Bad packet received: too short"
,
p
->
name
);
log
(
"%s: Discarding"
,
p
->
name
);
return
(
1
);
}
if
((
ntohs
(
ps
->
length
))
!=
(
size
-
20
))
{
log
(
"%s: Bad packet received: size fields does not match"
,
p
->
name
);
log
(
"%s: Discarding"
,
p
->
name
);
return
(
1
);
}
if
(
ps
->
version
!=
OSPF_VERSION
)
{
log
(
"%s: Bad packet received: version %d"
,
p
->
name
,
ps
->
version
);
log
(
"%s: Discarding"
,
p
->
name
);
return
(
1
);
}
/* FIXME: Count checksum */
/* FIXME: Do authetification */
if
(
ps
->
areaid
!=
ifa
->
area
)
{
log
(
"%s: Bad packet received: other area %ld"
,
p
->
name
,
ps
->
areaid
);
log
(
"%s: Discarding"
,
p
->
name
);
return
(
1
);
}
/* Dump packet */
pu8
=
(
u8
*
)(
sk
->
rbuf
+
5
*
4
);
for
(
i
=
0
;
i
<
ntohs
(
ps
->
length
);
i
+=
4
)
debug
(
"%s: received %d,%d,%d,%d
\n
"
,
p
->
name
,
pu8
[
i
+
0
],
pu8
[
i
+
1
],
pu8
[
i
+
2
],
pu8
[
i
+
3
]);
debug
(
"%s: received size: %d
\n
"
,
p
->
name
,
size
);
switch
(
ps
->
type
)
{
case
HELLO
:
DBG
(
p
->
name
);
DBG
(
": Hello received.
\n
"
);
ospf_hello_rx
((
struct
ospf_hello_packet
*
)
ps
,
p
,
ifa
);
break
;
case
DBDES
:
break
;
case
LSREQ
:
break
;
case
LSUPD
:
break
;
case
LSACK
:
break
;
default:
log
(
"%s: Bad packet received: wrong type %d"
,
p
->
name
,
ps
->
type
);
log
(
"%s: Discarding"
,
p
->
name
);
return
(
1
);
};
DBG
(
"
\n
"
);
#else
#error RX_Hook does not work for IPv6 now.
#endif
return
(
1
);
}
...
...
@@ -164,6 +255,7 @@ add_hello_timer(struct ospf_iface *ifa)
ifa
->
timer
->
expires
=
0
;
tm_start
(
ifa
->
timer
,
0
);
DBG
(
"%s: Installing hello timer.
\n
"
,
p
->
name
);
if
(
ifa
->
type
=
OSPF_IT_PTP
)
ifa
->
state
=
OSPF_IS_PTP
;
}
void
...
...
@@ -197,6 +289,10 @@ wait_timer_hook(timer *timer)
}
add_hello_timer
(
ifa
);
}
else
{
die
(
"%s: Wait timer fired I'm not in WAITING state?"
,
p
->
name
);
}
}
void
...
...
@@ -213,6 +309,7 @@ add_wait_timer(struct ospf_iface *ifa, pool *pool, int wait)
ifa
->
timer
->
hook
=
wait_timer_hook
;
ifa
->
timer
->
recurrent
=
0
;
ifa
->
timer
->
expires
=
0
;
ifa
->
state
=
OSPF_IS_WAITING
;
tm_start
(
ifa
->
timer
,(
wait
!=
0
?
wait
:
WAIT_D
));
DBG
(
p
->
name
);
DBG
(
": Installing wait timer.
\n
"
);
...
...
@@ -228,7 +325,7 @@ ospf_iface_default(struct ospf_iface *ifa)
{
int
i
;
ifa
->
area
=
0
;
ifa
->
area
=
0
;
/* FIXME: Read from config */
ifa
->
cost
=
COST_D
;
ifa
->
rxmtint
=
RXMTINT_D
;
ifa
->
iftransdelay
=
IFTRANSDELAY_D
;
...
...
@@ -295,6 +392,7 @@ ospf_if_notify(struct proto *p, unsigned flags, struct iface *iface)
if
((
ifa
=
find_iface
((
struct
proto_ospf
*
)
p
,
iface
))
!=
NULL
)
{
debug
(
" OSPF: killing interface %s.
\n
"
,
iface
->
name
);
/* FIXME: This should delete ifaces */
}
}
...
...
@@ -303,6 +401,7 @@ ospf_if_notify(struct proto *p, unsigned flags, struct iface *iface)
if
((
ifa
=
find_iface
((
struct
proto_ospf
*
)
p
,
iface
))
!=
NULL
)
{
debug
(
" OSPF: changing MTU on interface %s.
\n
"
,
iface
->
name
);
/* FIXME: change MTU */
}
}
}
...
...
proto/ospf/ospf.h
View file @
296ecb56
...
...
@@ -11,6 +11,7 @@
#define OSPF_PROTO 89
#ifndef IPV6
#define OSPF_VERSION 2
#define AllSPFRouters ipa_from_u32(0xe0000005)
/* 224.0.0.5 */
#define AllDRouters ipa_from_u32(0xe0000006)
/* 224.0.0.6 */
#else
...
...
@@ -84,4 +85,31 @@ struct ospf_patt {
byte
mode
;
};
struct
ospf_packet
{
u8
version
;
u8
type
;
#define HELLO 1
/* Hello */
#define DBDES 2
/* Database description */
#define LSREQ 3
/* Link state request */
#define LSUPD 4
/* Link state update */
#define LSACK 5
/* Link state acknowledgement */
u16
length
;
u32
routerid
;
u32
areaid
;
u16
checksum
;
u16
autype
;
u8
authetication
[
8
];
};
struct
ospf_hello_packet
{
struct
ospf_packet
;
u32
netmask
;
u16
hello_int
;
u8
options
;
u8
priority
;
u32
deadint
;
u32
dr
;
u32
bdr
;
};
#endif
/* _BIRD_OSPF_H_ */
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