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ripd: add "none" option to the "ip rip receive version" command

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RFC 2453 says (section 5.1):
"(...) For completeness, routers should also implement a receive control
switch which would determine whether to accept, RIP-1 only, RIP-2 only,
both, or none.  It should also be configurable on a per-interface basis".

For the "ip rip send version" command, we don't need to implement the
"none" option because there's already the "passive-interface" command
for that.

Fixes IxANVL RIP test 16.8.

Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
This commit is contained in:
Renato Westphal 2016-11-10 13:15:43 -02:00
parent f90310cfe8
commit 6aec4b4176
3 changed files with 17 additions and 16 deletions
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20
ripd/rip_interface.c
View file

@ -55,6 +55,7 @@ const struct message ri_version_msg[] =
{RI_RIP_VERSION_1, "1"},
{RI_RIP_VERSION_2, "2"},
{RI_RIP_VERSION_1_AND_2, "1 2"},
{RI_RIP_VERSION_NONE, "none"},
};
extern struct zebra_privs_t ripd_privs;
@ -1318,13 +1319,14 @@ DEFUN (no_rip_neighbor,
DEFUN (ip_rip_receive_version,
ip_rip_receive_version_cmd,
"ip rip receive version (1|2)",
"ip rip receive version (1|2|none)",
IP_STR
"Routing Information Protocol\n"
"Advertisement reception\n"
"Version control\n"
"RIP version 1\n"
"RIP version 2\n")
"RIP version 2\n"
"None\n")
{
struct interface *ifp;
struct rip_interface *ri;
@ -1332,17 +1334,21 @@ DEFUN (ip_rip_receive_version,
ifp = (struct interface *)vty->index;
ri = ifp->info;
/* Version 1. */
if (atoi (argv[0]) == 1)
switch (*argv[0])
{
case '1':
ri->ri_receive = RI_RIP_VERSION_1;
return CMD_SUCCESS;
}
if (atoi (argv[0]) == 2)
{
case '2':
ri->ri_receive = RI_RIP_VERSION_2;
return CMD_SUCCESS;
case 'n':
ri->ri_receive = RI_RIP_VERSION_NONE;
return CMD_SUCCESS;
default:
break;
}
return CMD_WARNING;
}

12
ripd/ripd.c
View file

@ -1937,15 +1937,9 @@ rip_read (struct thread *t)
/* RIP Version check. RFC2453, 4.6 and 5.1 */
vrecv = ((ri->ri_receive == RI_RIP_UNSPEC) ?
rip->version_recv : ri->ri_receive);
if ((packet->version == RIPv1) && !(vrecv & RIPv1))
{
if (IS_RIP_DEBUG_PACKET)
zlog_debug (" packet's v%d doesn't fit to if version spec",
packet->version);
rip_peer_bad_packet (&from);
return -1;
}
if ((packet->version == RIPv2) && !(vrecv & RIPv2))
if (vrecv == RI_RIP_VERSION_NONE ||
((packet->version == RIPv1) && !(vrecv & RIPv1)) ||
((packet->version == RIPv2) && !(vrecv & RIPv2)))
{
if (IS_RIP_DEBUG_PACKET)
zlog_debug (" packet's v%d doesn't fit to if version spec",

1
ripd/ripd.h
View file

@ -350,6 +350,7 @@ struct rip_md5_data
#define RI_RIP_VERSION_1 1
#define RI_RIP_VERSION_2 2
#define RI_RIP_VERSION_1_AND_2 3
#define RI_RIP_VERSION_NONE 4
/* N.B. stuff will break if
(RIPv1 != RI_RIP_VERSION_1) || (RIPv2 != RI_RIP_VERSION_2) */