ospf6_zebra.c
上传用户:xiaozhuqw
上传日期:2009-11-15
资源大小:1338k
文件大小:18k
- /*
- * 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;
- /* 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->sock, 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->sock, type);
- }
- /* Inteface addition message from zebra. */
- 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_info ("Zebra Interface add: %s index %d mtu %d",
- ifp->name, ifp->ifindex, ifp->mtu);
- ospf6_interface_if_add (ifp);
- return 0;
- }
- int
- ospf6_zebra_if_del (int command, struct zclient *zclient, zebra_size_t length)
- {
- #if 0
- struct interface *ifp;
- ifp = zebra_interface_delete_read (zclient->ibuf);
- if (IS_OSPF6_DEBUG_ZEBRA (RECV))
- zlog_info ("Zebra Interface delete: %s index %d mtu %d",
- ifp->name, ifp->ifindex, ifp->mtu);
- ospf6_interface_if_del (ifp);
- #endif /*0*/
- return 0;
- }
- 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 (IS_OSPF6_DEBUG_ZEBRA (RECV))
- zlog_info ("Zebra Interface state change: "
- "%s index %d flags %ld metric %d mtu %d",
- ifp->name, ifp->ifindex, ifp->flags, ifp->metric, ifp->mtu);
- ospf6_interface_state_update (ifp);
- return 0;
- }
- 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_add_read (zclient->ibuf);
- if (c == NULL)
- return 0;
- if (IS_OSPF6_DEBUG_ZEBRA (RECV))
- zlog_info ("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_connected_route_update (c->ifp);
- return 0;
- }
- 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_delete_read (zclient->ibuf);
- if (c == NULL)
- return 0;
- if (IS_OSPF6_DEBUG_ZEBRA (RECV))
- zlog_info ("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);
- return 0;
- }
- const char *zebra_route_name[ZEBRA_ROUTE_MAX] =
- { "System", "Kernel", "Connect", "Static", "RIP", "RIPng", "OSPF",
- "OSPF6", "BGP" };
- const char *zebra_route_abname[ZEBRA_ROUTE_MAX] =
- { "X", "K", "C", "S", "r", "R", "o", "O", "B" };
- 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_info ("Zebra Receive route %s: %s %s nexthop %s ifindex %ld",
- (command == ZEBRA_IPV6_ROUTE_ADD ? "add" : "delete"),
- zebra_route_name[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 informationn")
- {
- 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_name[i]);
- }
- vty_out (vty, "%s", VNL);
- return CMD_SUCCESS;
- }
- DEFUN (router_zebra,
- router_zebra_cmd,
- "router zebra",
- "Enable a routing processn"
- "Make connection to zebra daemonn")
- {
- 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 processn"
- "Disable connection to zebra daemonn")
- {
- zclient->enable = 0;
- zclient_stop (zclient);
- return CMD_SUCCESS;
- }
- /* Zebra configuration write function. */
- 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. */
- 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], ifname[IFNAMSIZ];
- 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_info ("Send %s route: %s",
- (type == REM ? "remove" : "add"), buf);
- }
- if (zclient->sock < 0)
- {
- if (IS_OSPF6_DEBUG_ZEBRA (SEND))
- zlog_info (" 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_info (" 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_info (" 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_info (" 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_info (" 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))
- {
- inet_ntop (AF_INET6, &request->nexthop[i].address,
- buf, sizeof (buf));
- if_indextoname (request->nexthop[i].ifindex, ifname);
- zlog_info (" nexthop: %s%%%s(%d)", buf, 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;
- 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_delete (zclient, dest, &api);
- else
- ret = zapi_ipv6_add (zclient, dest, &api);
- if (ret < 0)
- zlog_err ("zapi_ipv6_%s () failed: %s",
- (type == REM ? "delete" : "add"), 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 controln"
- "OSPF6 routen")
- {
- 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 controln"
- "OSPF6 routen")
- {
- 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 ()
- {
- /* Allocate zebra structure. */
- zclient = zclient_new ();
- zclient_init (zclient, ZEBRA_ROUTE_OSPF6);
- 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 zebran"
- "Debug Sending zebran"
- "Debug Receiving zebran"
- )
- {
- 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 zebran"
- );
- 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 zebran"
- "Debug Sending zebran"
- "Debug Receiving zebran"
- )
- {
- 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 zebran"
- );
- 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 ()
- {
- 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);
- }