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|
/*
* Copyright (C) 2003 Yasuhiro Ohara
*
* This file is part of GNU Zebra.
*
* GNU Zebra is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2, or (at your option) any
* later version.
*
* GNU Zebra is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Zebra; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <zebra.h>
#include "log.h"
#include "vty.h"
#include "command.h"
#include "prefix.h"
#include "stream.h"
#include "zclient.h"
#include "memory.h"
#include "ospf6_proto.h"
#include "ospf6_top.h"
#include "ospf6_interface.h"
#include "ospf6_route.h"
#include "ospf6_lsa.h"
#include "ospf6_lsdb.h"
#include "ospf6_asbr.h"
#include "ospf6_zebra.h"
#include "ospf6d.h"
unsigned char conf_debug_ospf6_zebra = 0;
/* information about zebra. */
struct zclient *zclient = NULL;
struct in_addr router_id_zebra;
/* Router-id update message from zebra. */
static int
ospf6_router_id_update_zebra (int command, struct zclient *zclient,
zebra_size_t length)
{
struct prefix router_id;
struct ospf6 *o = ospf6;
zebra_router_id_update_read(zclient->ibuf,&router_id);
router_id_zebra = router_id.u.prefix4;
if (o == NULL)
return 0;
if (o->router_id == 0)
o->router_id = (u_int32_t) router_id_zebra.s_addr;
return 0;
}
/* redistribute function */
void
ospf6_zebra_redistribute (int type)
{
if (zclient->redist[type])
return;
zclient->redist[type] = 1;
if (zclient->sock > 0)
zebra_redistribute_send (ZEBRA_REDISTRIBUTE_ADD, zclient, type);
}
void
ospf6_zebra_no_redistribute (int type)
{
if (! zclient->redist[type])
return;
zclient->redist[type] = 0;
if (zclient->sock > 0)
zebra_redistribute_send (ZEBRA_REDISTRIBUTE_DELETE, zclient, type);
}
/* Inteface addition message from zebra. */
static int
ospf6_zebra_if_add (int command, struct zclient *zclient, zebra_size_t length)
{
struct interface *ifp;
ifp = zebra_interface_add_read (zclient->ibuf);
if (IS_OSPF6_DEBUG_ZEBRA (RECV))
zlog_debug ("Zebra Interface add: %s index %d mtu %d",
ifp->name, ifp->ifindex, ifp->mtu6);
ospf6_interface_if_add (ifp);
return 0;
}
static int
ospf6_zebra_if_del (int command, struct zclient *zclient, zebra_size_t length)
{
struct interface *ifp;
if (!(ifp = zebra_interface_state_read(zclient->ibuf)))
return 0;
if (if_is_up (ifp))
zlog_warn ("Zebra: got delete of %s, but interface is still up", ifp->name);
if (IS_OSPF6_DEBUG_ZEBRA (RECV))
zlog_debug ("Zebra Interface delete: %s index %d mtu %d",
ifp->name, ifp->ifindex, ifp->mtu6);
#if 0
/* XXX: ospf6_interface_if_del is not the right way to handle this,
* because among other thinkable issues, it will also clear all
* settings as they are contained in the struct ospf6_interface. */
ospf6_interface_if_del (ifp);
#endif /*0*/
ifp->ifindex = IFINDEX_INTERNAL;
return 0;
}
static int
ospf6_zebra_if_state_update (int command, struct zclient *zclient,
zebra_size_t length)
{
struct interface *ifp;
ifp = zebra_interface_state_read (zclient->ibuf);
if (ifp == NULL)
return 0;
if (IS_OSPF6_DEBUG_ZEBRA (RECV))
zlog_debug ("Zebra Interface state change: "
"%s index %d flags %llx metric %d mtu %d bandwidth %d",
ifp->name, ifp->ifindex, (unsigned long long)ifp->flags,
ifp->metric, ifp->mtu6, ifp->bandwidth);
ospf6_interface_state_update (ifp);
return 0;
}
static int
ospf6_zebra_if_address_update_add (int command, struct zclient *zclient,
zebra_size_t length)
{
struct connected *c;
char buf[128];
c = zebra_interface_address_read (ZEBRA_INTERFACE_ADDRESS_ADD, zclient->ibuf);
if (c == NULL)
return 0;
if (IS_OSPF6_DEBUG_ZEBRA (RECV))
zlog_debug ("Zebra Interface address add: %s %5s %s/%d",
c->ifp->name, prefix_family_str (c->address),
inet_ntop (c->address->family, &c->address->u.prefix,
buf, sizeof (buf)), c->address->prefixlen);
if (c->address->family == AF_INET6)
{
ospf6_interface_state_update (c->ifp);
ospf6_interface_connected_route_update (c->ifp);
}
return 0;
}
static int
ospf6_zebra_if_address_update_delete (int command, struct zclient *zclient,
zebra_size_t length)
{
struct connected *c;
char buf[128];
c = zebra_interface_address_read (ZEBRA_INTERFACE_ADDRESS_DELETE, zclient->ibuf);
if (c == NULL)
return 0;
if (IS_OSPF6_DEBUG_ZEBRA (RECV))
zlog_debug ("Zebra Interface address delete: %s %5s %s/%d",
c->ifp->name, prefix_family_str (c->address),
inet_ntop (c->address->family, &c->address->u.prefix,
buf, sizeof (buf)), c->address->prefixlen);
if (c->address->family == AF_INET6)
{
ospf6_interface_connected_route_update (c->ifp);
ospf6_interface_state_update (c->ifp);
}
return 0;
}
static int
ospf6_zebra_read_ipv6 (int command, struct zclient *zclient,
zebra_size_t length)
{
struct stream *s;
struct zapi_ipv6 api;
unsigned long ifindex;
struct prefix_ipv6 p;
struct in6_addr *nexthop;
s = zclient->ibuf;
ifindex = 0;
nexthop = NULL;
memset (&api, 0, sizeof (api));
/* Type, flags, message. */
api.type = stream_getc (s);
api.flags = stream_getc (s);
api.message = stream_getc (s);
/* IPv6 prefix. */
memset (&p, 0, sizeof (struct prefix_ipv6));
p.family = AF_INET6;
p.prefixlen = stream_getc (s);
stream_get (&p.prefix, s, PSIZE (p.prefixlen));
/* Nexthop, ifindex, distance, metric. */
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
{
api.nexthop_num = stream_getc (s);
nexthop = (struct in6_addr *)
malloc (api.nexthop_num * sizeof (struct in6_addr));
stream_get (nexthop, s, api.nexthop_num * sizeof (struct in6_addr));
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_IFINDEX))
{
api.ifindex_num = stream_getc (s);
ifindex = stream_getl (s);
}
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
api.distance = stream_getc (s);
else
api.distance = 0;
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
api.metric = stream_getl (s);
else
api.metric = 0;
if (IS_OSPF6_DEBUG_ZEBRA (RECV))
{
char prefixstr[128], nexthopstr[128];
prefix2str ((struct prefix *)&p, prefixstr, sizeof (prefixstr));
if (nexthop)
inet_ntop (AF_INET6, nexthop, nexthopstr, sizeof (nexthopstr));
else
snprintf (nexthopstr, sizeof (nexthopstr), "::");
zlog_debug ("Zebra Receive route %s: %s %s nexthop %s ifindex %ld",
(command == ZEBRA_IPV6_ROUTE_ADD ? "add" : "delete"),
zebra_route_string(api.type), prefixstr, nexthopstr, ifindex);
}
if (command == ZEBRA_IPV6_ROUTE_ADD)
ospf6_asbr_redistribute_add (api.type, ifindex, (struct prefix *) &p,
api.nexthop_num, nexthop);
else
ospf6_asbr_redistribute_remove (api.type, ifindex, (struct prefix *) &p);
if (CHECK_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP))
free (nexthop);
return 0;
}
DEFUN (show_zebra,
show_zebra_cmd,
"show zebra",
SHOW_STR
"Zebra information\n")
{
int i;
if (zclient == NULL)
{
vty_out (vty, "Not connected to zebra%s", VNL);
return CMD_SUCCESS;
}
vty_out (vty, "Zebra Infomation%s", VNL);
vty_out (vty, " enable: %d fail: %d%s",
zclient->enable, zclient->fail, VNL);
vty_out (vty, " redistribute default: %d%s", zclient->redist_default,
VNL);
vty_out (vty, " redistribute:");
for (i = 0; i < ZEBRA_ROUTE_MAX; i++)
{
if (zclient->redist[i])
vty_out (vty, " %s", zebra_route_string(i));
}
vty_out (vty, "%s", VNL);
return CMD_SUCCESS;
}
DEFUN (router_zebra,
router_zebra_cmd,
"router zebra",
"Enable a routing process\n"
"Make connection to zebra daemon\n")
{
vty->node = ZEBRA_NODE;
zclient->enable = 1;
zclient_start (zclient);
return CMD_SUCCESS;
}
DEFUN (no_router_zebra,
no_router_zebra_cmd,
"no router zebra",
NO_STR
"Configure routing process\n"
"Disable connection to zebra daemon\n")
{
zclient->enable = 0;
zclient_stop (zclient);
return CMD_SUCCESS;
}
/* Zebra configuration write function. */
static int
config_write_ospf6_zebra (struct vty *vty)
{
if (! zclient->enable)
{
vty_out (vty, "no router zebra%s", VNL);
vty_out (vty, "!%s", VNL);
}
else if (! zclient->redist[ZEBRA_ROUTE_OSPF6])
{
vty_out (vty, "router zebra%s", VNL);
vty_out (vty, " no redistribute ospf6%s", VNL);
vty_out (vty, "!%s", VNL);
}
return 0;
}
/* Zebra node structure. */
static struct cmd_node zebra_node =
{
ZEBRA_NODE,
"%s(config-zebra)# ",
};
#define ADD 0
#define REM 1
static void
ospf6_zebra_route_update (int type, struct ospf6_route *request)
{
struct zapi_ipv6 api;
char buf[64];
int nhcount;
struct in6_addr **nexthops;
unsigned int *ifindexes;
int i, ret = 0;
struct prefix_ipv6 *dest;
if (IS_OSPF6_DEBUG_ZEBRA (SEND))
{
prefix2str (&request->prefix, buf, sizeof (buf));
zlog_debug ("Send %s route: %s",
(type == REM ? "remove" : "add"), buf);
}
if (zclient->sock < 0)
{
if (IS_OSPF6_DEBUG_ZEBRA (SEND))
zlog_debug (" Not connected to Zebra");
return;
}
if (request->path.origin.adv_router == ospf6->router_id &&
(request->path.type == OSPF6_PATH_TYPE_EXTERNAL1 ||
request->path.type == OSPF6_PATH_TYPE_EXTERNAL2))
{
if (IS_OSPF6_DEBUG_ZEBRA (SEND))
zlog_debug (" Ignore self-originated external route");
return;
}
/* If removing is the best path and if there's another path,
treat this request as add the secondary path */
if (type == REM && ospf6_route_is_best (request) &&
request->next && ospf6_route_is_same (request, request->next))
{
if (IS_OSPF6_DEBUG_ZEBRA (SEND))
zlog_debug (" Best-path removal resulted Sencondary addition");
type = ADD;
request = request->next;
}
/* Only the best path will be sent to zebra. */
if (! ospf6_route_is_best (request))
{
/* this is not preferred best route, ignore */
if (IS_OSPF6_DEBUG_ZEBRA (SEND))
zlog_debug (" Ignore non-best route");
return;
}
nhcount = 0;
for (i = 0; i < OSPF6_MULTI_PATH_LIMIT; i++)
if (ospf6_nexthop_is_set (&request->nexthop[i]))
nhcount++;
if (nhcount == 0)
{
if (IS_OSPF6_DEBUG_ZEBRA (SEND))
zlog_debug (" No nexthop, ignore");
return;
}
/* allocate memory for nexthop_list */
nexthops = XCALLOC (MTYPE_OSPF6_OTHER,
nhcount * sizeof (struct in6_addr *));
if (nexthops == NULL)
{
zlog_warn ("Can't send route to zebra: malloc failed");
return;
}
/* allocate memory for ifindex_list */
ifindexes = XCALLOC (MTYPE_OSPF6_OTHER,
nhcount * sizeof (unsigned int));
if (ifindexes == NULL)
{
zlog_warn ("Can't send route to zebra: malloc failed");
XFREE (MTYPE_OSPF6_OTHER, nexthops);
return;
}
for (i = 0; i < nhcount; i++)
{
if (IS_OSPF6_DEBUG_ZEBRA (SEND))
{
char ifname[IFNAMSIZ];
inet_ntop (AF_INET6, &request->nexthop[i].address,
buf, sizeof (buf));
if (!if_indextoname(request->nexthop[i].ifindex, ifname))
strlcpy(ifname, "unknown", sizeof(ifname));
zlog_debug (" nexthop: %s%%%.*s(%d)", buf, IFNAMSIZ, ifname,
request->nexthop[i].ifindex);
}
nexthops[i] = &request->nexthop[i].address;
ifindexes[i] = request->nexthop[i].ifindex;
}
api.type = ZEBRA_ROUTE_OSPF6;
api.flags = 0;
api.message = 0;
api.safi = SAFI_UNICAST;
SET_FLAG (api.message, ZAPI_MESSAGE_NEXTHOP);
api.nexthop_num = nhcount;
api.nexthop = nexthops;
SET_FLAG (api.message, ZAPI_MESSAGE_IFINDEX);
api.ifindex_num = nhcount;
api.ifindex = ifindexes;
SET_FLAG (api.message, ZAPI_MESSAGE_METRIC);
api.metric = (request->path.metric_type == 2 ?
request->path.cost_e2 : request->path.cost);
dest = (struct prefix_ipv6 *) &request->prefix;
if (type == REM)
ret = zapi_ipv6_route (ZEBRA_IPV6_ROUTE_DELETE, zclient, dest, &api);
else
ret = zapi_ipv6_route (ZEBRA_IPV6_ROUTE_ADD, zclient, dest, &api);
if (ret < 0)
zlog_err ("zapi_ipv6_route() %s failed: %s",
(type == REM ? "delete" : "add"), safe_strerror (errno));
XFREE (MTYPE_OSPF6_OTHER, nexthops);
XFREE (MTYPE_OSPF6_OTHER, ifindexes);
return;
}
void
ospf6_zebra_route_update_add (struct ospf6_route *request)
{
if (! zclient->redist[ZEBRA_ROUTE_OSPF6])
{
ospf6->route_table->hook_add = NULL;
ospf6->route_table->hook_remove = NULL;
return;
}
ospf6_zebra_route_update (ADD, request);
}
void
ospf6_zebra_route_update_remove (struct ospf6_route *request)
{
if (! zclient->redist[ZEBRA_ROUTE_OSPF6])
{
ospf6->route_table->hook_add = NULL;
ospf6->route_table->hook_remove = NULL;
return;
}
ospf6_zebra_route_update (REM, request);
}
DEFUN (redistribute_ospf6,
redistribute_ospf6_cmd,
"redistribute ospf6",
"Redistribute control\n"
"OSPF6 route\n")
{
struct ospf6_route *route;
if (zclient->redist[ZEBRA_ROUTE_OSPF6])
return CMD_SUCCESS;
zclient->redist[ZEBRA_ROUTE_OSPF6] = 1;
if (ospf6 == NULL)
return CMD_SUCCESS;
/* send ospf6 route to zebra route table */
for (route = ospf6_route_head (ospf6->route_table); route;
route = ospf6_route_next (route))
ospf6_zebra_route_update_add (route);
ospf6->route_table->hook_add = ospf6_zebra_route_update_add;
ospf6->route_table->hook_remove = ospf6_zebra_route_update_remove;
return CMD_SUCCESS;
}
DEFUN (no_redistribute_ospf6,
no_redistribute_ospf6_cmd,
"no redistribute ospf6",
NO_STR
"Redistribute control\n"
"OSPF6 route\n")
{
struct ospf6_route *route;
if (! zclient->redist[ZEBRA_ROUTE_OSPF6])
return CMD_SUCCESS;
zclient->redist[ZEBRA_ROUTE_OSPF6] = 0;
if (ospf6 == NULL)
return CMD_SUCCESS;
ospf6->route_table->hook_add = NULL;
ospf6->route_table->hook_remove = NULL;
/* withdraw ospf6 route from zebra route table */
for (route = ospf6_route_head (ospf6->route_table); route;
route = ospf6_route_next (route))
ospf6_zebra_route_update_remove (route);
return CMD_SUCCESS;
}
void
ospf6_zebra_init (void)
{
/* Allocate zebra structure. */
zclient = zclient_new ();
zclient_init (zclient, ZEBRA_ROUTE_OSPF6);
zclient->router_id_update = ospf6_router_id_update_zebra;
zclient->interface_add = ospf6_zebra_if_add;
zclient->interface_delete = ospf6_zebra_if_del;
zclient->interface_up = ospf6_zebra_if_state_update;
zclient->interface_down = ospf6_zebra_if_state_update;
zclient->interface_address_add = ospf6_zebra_if_address_update_add;
zclient->interface_address_delete = ospf6_zebra_if_address_update_delete;
zclient->ipv4_route_add = NULL;
zclient->ipv4_route_delete = NULL;
zclient->ipv6_route_add = ospf6_zebra_read_ipv6;
zclient->ipv6_route_delete = ospf6_zebra_read_ipv6;
/* redistribute connected route by default */
/* ospf6_zebra_redistribute (ZEBRA_ROUTE_CONNECT); */
/* Install zebra node. */
install_node (&zebra_node, config_write_ospf6_zebra);
/* Install command element for zebra node. */
install_element (VIEW_NODE, &show_zebra_cmd);
install_element (ENABLE_NODE, &show_zebra_cmd);
install_element (CONFIG_NODE, &router_zebra_cmd);
install_element (CONFIG_NODE, &no_router_zebra_cmd);
install_default (ZEBRA_NODE);
install_element (ZEBRA_NODE, &redistribute_ospf6_cmd);
install_element (ZEBRA_NODE, &no_redistribute_ospf6_cmd);
return;
}
/* Debug */
DEFUN (debug_ospf6_zebra_sendrecv,
debug_ospf6_zebra_sendrecv_cmd,
"debug ospf6 zebra (send|recv)",
DEBUG_STR
OSPF6_STR
"Debug connection between zebra\n"
"Debug Sending zebra\n"
"Debug Receiving zebra\n"
)
{
unsigned char level = 0;
if (argc)
{
if (! strncmp (argv[0], "s", 1))
level = OSPF6_DEBUG_ZEBRA_SEND;
else if (! strncmp (argv[0], "r", 1))
level = OSPF6_DEBUG_ZEBRA_RECV;
}
else
level = OSPF6_DEBUG_ZEBRA_SEND | OSPF6_DEBUG_ZEBRA_RECV;
OSPF6_DEBUG_ZEBRA_ON (level);
return CMD_SUCCESS;
}
ALIAS (debug_ospf6_zebra_sendrecv,
debug_ospf6_zebra_cmd,
"debug ospf6 zebra",
DEBUG_STR
OSPF6_STR
"Debug connection between zebra\n"
)
DEFUN (no_debug_ospf6_zebra_sendrecv,
no_debug_ospf6_zebra_sendrecv_cmd,
"no debug ospf6 zebra (send|recv)",
NO_STR
DEBUG_STR
OSPF6_STR
"Debug connection between zebra\n"
"Debug Sending zebra\n"
"Debug Receiving zebra\n"
)
{
unsigned char level = 0;
if (argc)
{
if (! strncmp (argv[0], "s", 1))
level = OSPF6_DEBUG_ZEBRA_SEND;
else if (! strncmp (argv[0], "r", 1))
level = OSPF6_DEBUG_ZEBRA_RECV;
}
else
level = OSPF6_DEBUG_ZEBRA_SEND | OSPF6_DEBUG_ZEBRA_RECV;
OSPF6_DEBUG_ZEBRA_OFF (level);
return CMD_SUCCESS;
}
ALIAS (no_debug_ospf6_zebra_sendrecv,
no_debug_ospf6_zebra_cmd,
"no debug ospf6 zebra",
NO_STR
DEBUG_STR
OSPF6_STR
"Debug connection between zebra\n"
)
int
config_write_ospf6_debug_zebra (struct vty *vty)
{
if (IS_OSPF6_DEBUG_ZEBRA (SEND) && IS_OSPF6_DEBUG_ZEBRA (RECV))
vty_out (vty, "debug ospf6 zebra%s", VNL);
else
{
if (IS_OSPF6_DEBUG_ZEBRA (SEND))
vty_out (vty, "debug ospf6 zebra send%s", VNL);
if (IS_OSPF6_DEBUG_ZEBRA (RECV))
vty_out (vty, "debug ospf6 zebra recv%s", VNL);
}
return 0;
}
void
install_element_ospf6_debug_zebra (void)
{
install_element (ENABLE_NODE, &debug_ospf6_zebra_cmd);
install_element (ENABLE_NODE, &no_debug_ospf6_zebra_cmd);
install_element (ENABLE_NODE, &debug_ospf6_zebra_sendrecv_cmd);
install_element (ENABLE_NODE, &no_debug_ospf6_zebra_sendrecv_cmd);
install_element (CONFIG_NODE, &debug_ospf6_zebra_cmd);
install_element (CONFIG_NODE, &no_debug_ospf6_zebra_cmd);
install_element (CONFIG_NODE, &debug_ospf6_zebra_sendrecv_cmd);
install_element (CONFIG_NODE, &no_debug_ospf6_zebra_sendrecv_cmd);
}
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