zserv.c
上传用户:xiaozhuqw
上传日期:2009-11-15
资源大小:1338k
文件大小:43k
- /* Zebra daemon server routine.
- * Copyright (C) 1997, 98, 99 Kunihiro Ishiguro
- *
- * 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 "prefix.h"
- #include "command.h"
- #include "if.h"
- #include "thread.h"
- #include "stream.h"
- #include "memory.h"
- #include "table.h"
- #include "rib.h"
- #include "network.h"
- #include "sockunion.h"
- #include "log.h"
- #include "zclient.h"
- #include "zebra/zserv.h"
- #include "zebra/redistribute.h"
- #include "zebra/debug.h"
- #include "zebra/ipforward.h"
- /* Event list of zebra. */
- enum event { ZEBRA_SERV, ZEBRA_READ, ZEBRA_WRITE };
- /* Zebra client list. */
- list client_list;
- /* Default rtm_table for all clients */
- int rtm_table_default = 0;
- void zebra_event (enum event event, int sock, struct zserv *client);
- extern struct thread_master *master;
- /* For logging of zebra meesages. */
- char *zebra_command_str [] =
- {
- "NULL",
- "ZEBRA_INTERFACE_ADD",
- "ZEBRA_INTERFACE_DELETE",
- "ZEBRA_INTERFACE_ADDRESS_ADD",
- "ZEBRA_INTERFACE_ADDRESS_DELETE",
- "ZEBRA_INTERFACE_UP",
- "ZEBRA_INTERFACE_DOWN",
- "ZEBRA_IPV4_ROUTE_ADD",
- "ZEBRA_IPV4_ROUTE_DELETE",
- "ZEBRA_IPV6_ROUTE_ADD",
- "ZEBRA_IPV6_ROUTE_DELETE",
- "ZEBRA_REDISTRIBUTE_ADD",
- "ZEBRA_REDISTRIBUTE_DELETE",
- "ZEBRA_REDISTRIBUTE_DEFAULT_ADD",
- "ZEBRA_REDISTRIBUTE_DEFAULT_DELETE",
- "ZEBRA_IPV4_NEXTHOP_LOOKUP",
- "ZEBRA_IPV6_NEXTHOP_LOOKUP",
- "ZEBRA_IPV4_IMPORT_LOOKUP",
- "ZEBRA_IPV6_IMPORT_LOOKUP"
- };
- struct zebra_message_queue
- {
- struct nsm_message_queue *next;
- struct nsm_message_queue *prev;
- u_char *buf;
- u_int16_t length;
- u_int16_t written;
- };
- struct thread *t_write;
- struct fifo message_queue;
- int
- zebra_server_dequeue (struct thread *t)
- {
- int sock;
- int nbytes;
- struct zebra_message_queue *queue;
- sock = THREAD_FD (t);
- t_write = NULL;
- queue = (struct zebra_message_queue *) FIFO_HEAD (&message_queue);
- if (queue)
- {
- nbytes = write (sock, queue->buf + queue->written,
- queue->length - queue->written);
- if (nbytes <= 0)
- {
- if (errno != EAGAIN)
- return -1;
- }
- else if (nbytes != (queue->length - queue->written))
- {
- queue->written += nbytes;
- }
- else
- {
- FIFO_DEL (queue);
- XFREE (MTYPE_TMP, queue->buf);
- XFREE (MTYPE_TMP, queue);
- }
- }
- if (FIFO_TOP (&message_queue))
- THREAD_WRITE_ON (master, t_write, zebra_server_dequeue, NULL, sock);
- return 0;
- }
- /* Enqueu message. */
- void
- zebra_server_enqueue (int sock, u_char *buf, unsigned long length,
- unsigned long written)
- {
- struct zebra_message_queue *queue;
- queue = XCALLOC (MTYPE_TMP, sizeof (struct zebra_message_queue));
- queue->buf = XMALLOC (MTYPE_TMP, length);
- memcpy (queue->buf, buf, length);
- queue->length = length;
- queue->written = written;
- FIFO_ADD (&message_queue, queue);
- THREAD_WRITE_ON (master, t_write, zebra_server_dequeue, NULL, sock);
- }
- int
- zebra_server_send_message (int sock, u_char *buf, unsigned long length)
- {
- int nbytes;
- if (FIFO_TOP (&message_queue))
- {
- zebra_server_enqueue (sock, buf, length, 0);
- return 0;
- }
- /* Send message. */
- nbytes = write (sock, buf, length);
- if (nbytes <= 0)
- {
- if (errno == EAGAIN)
- zebra_server_enqueue (sock, buf, length, 0);
- else
- return -1;
- }
- else if (nbytes != length)
- zebra_server_enqueue (sock, buf, length, nbytes);
- return 0;
- }
- /* Interface is added. Send ZEBRA_INTERFACE_ADD to client. */
- int
- zsend_interface_add (struct zserv *client, struct interface *ifp)
- {
- struct stream *s;
- /* Check this client need interface information. */
- if (! client->ifinfo)
- return -1;
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- /* Message type. */
- stream_putc (s, ZEBRA_INTERFACE_ADD);
- /* Interface information. */
- stream_put (s, ifp->name, INTERFACE_NAMSIZ);
- stream_putl (s, ifp->ifindex);
- stream_putl (s, ifp->flags);
- stream_putl (s, ifp->metric);
- stream_putl (s, ifp->mtu);
- stream_putl (s, ifp->bandwidth);
- #ifdef HAVE_SOCKADDR_DL
- stream_put (s, &ifp->sdl, sizeof (ifp->sdl));
- #else
- stream_putl (s, ifp->hw_addr_len);
- if (ifp->hw_addr_len)
- stream_put (s, ifp->hw_addr, ifp->hw_addr_len);
- #endif /* HAVE_SOCKADDR_DL */
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- /* Interface deletion from zebra daemon. */
- int
- zsend_interface_delete (struct zserv *client, struct interface *ifp)
- {
- struct stream *s;
- /* Check this client need interface information. */
- if (! client->ifinfo)
- return -1;
- s = client->obuf;
- stream_reset (s);
- /* Packet length placeholder. */
- stream_putw (s, 0);
- /* Interface information. */
- stream_putc (s, ZEBRA_INTERFACE_DELETE);
- stream_put (s, ifp->name, INTERFACE_NAMSIZ);
- stream_putl (s, ifp->ifindex);
- stream_putl (s, ifp->flags);
- stream_putl (s, ifp->metric);
- stream_putl (s, ifp->mtu);
- stream_putl (s, ifp->bandwidth);
- /* Write packet length. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- /* Interface address is added. Send ZEBRA_INTERFACE_ADDRESS_ADD to the
- client. */
- int
- zsend_interface_address_add (struct zserv *client, struct interface *ifp,
- struct connected *ifc)
- {
- int blen;
- struct stream *s;
- struct prefix *p;
- /* Check this client need interface information. */
- if (! client->ifinfo)
- return -1;
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- stream_putc (s, ZEBRA_INTERFACE_ADDRESS_ADD);
- stream_putl (s, ifp->ifindex);
- /* Interface address flag. */
- stream_putc (s, ifc->flags);
- /* Prefix information. */
- p = ifc->address;
- stream_putc (s, p->family);
- blen = prefix_blen (p);
- stream_put (s, &p->u.prefix, blen);
- stream_putc (s, p->prefixlen);
- /* Destination. */
- p = ifc->destination;
- if (p)
- stream_put (s, &p->u.prefix, blen);
- else
- stream_put (s, NULL, blen);
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- /* Interface address is deleted. Send ZEBRA_INTERFACE_ADDRESS_DELETE
- to the client. */
- int
- zsend_interface_address_delete (struct zserv *client, struct interface *ifp,
- struct connected *ifc)
- {
- int blen;
- struct stream *s;
- struct prefix *p;
- /* Check this client need interface information. */
- if (! client->ifinfo)
- return -1;
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- stream_putc (s, ZEBRA_INTERFACE_ADDRESS_DELETE);
- stream_putl (s, ifp->ifindex);
- /* Interface address flag. */
- stream_putc (s, ifc->flags);
- /* Prefix information. */
- p = ifc->address;
- stream_putc (s, p->family);
- blen = prefix_blen (p);
- stream_put (s, &p->u.prefix, blen);
- p = ifc->destination;
- if (p)
- stream_put (s, &p->u.prefix, blen);
- else
- stream_put (s, NULL, blen);
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- int
- zsend_interface_up (struct zserv *client, struct interface *ifp)
- {
- struct stream *s;
- /* Check this client need interface information. */
- if (! client->ifinfo)
- return -1;
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- /* Zebra command. */
- stream_putc (s, ZEBRA_INTERFACE_UP);
- /* Interface information. */
- stream_put (s, ifp->name, INTERFACE_NAMSIZ);
- stream_putl (s, ifp->ifindex);
- stream_putl (s, ifp->flags);
- stream_putl (s, ifp->metric);
- stream_putl (s, ifp->mtu);
- stream_putl (s, ifp->bandwidth);
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- int
- zsend_interface_down (struct zserv *client, struct interface *ifp)
- {
- struct stream *s;
- /* Check this client need interface information. */
- if (! client->ifinfo)
- return -1;
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- /* Zebra command. */
- stream_putc (s, ZEBRA_INTERFACE_DOWN);
- /* Interface information. */
- stream_put (s, ifp->name, INTERFACE_NAMSIZ);
- stream_putl (s, ifp->ifindex);
- stream_putl (s, ifp->flags);
- stream_putl (s, ifp->metric);
- stream_putl (s, ifp->mtu);
- stream_putl (s, ifp->bandwidth);
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- int
- zsend_ipv4_add_multipath (struct zserv *client, struct prefix *p,
- struct rib *rib)
- {
- int psize;
- struct stream *s;
- struct nexthop *nexthop;
- struct in_addr empty;
- empty.s_addr = 0;
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- /* Put command, type and nexthop. */
- stream_putc (s, ZEBRA_IPV4_ROUTE_ADD);
- stream_putc (s, rib->type);
- stream_putc (s, rib->flags);
- stream_putc (s, ZAPI_MESSAGE_NEXTHOP | ZAPI_MESSAGE_IFINDEX | ZAPI_MESSAGE_METRIC);
- /* Prefix. */
- psize = PSIZE (p->prefixlen);
- stream_putc (s, p->prefixlen);
- stream_write (s, (u_char *)&p->u.prefix, psize);
- /* Nexthop */
- for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
- {
- if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
- {
- stream_putc (s, 1);
- if (nexthop->type == NEXTHOP_TYPE_IPV4
- || nexthop->type == NEXTHOP_TYPE_IPV4_IFINDEX)
- stream_put_in_addr (s, &nexthop->gate.ipv4);
- else
- stream_put_in_addr (s, &empty);
- /* Interface index. */
- stream_putc (s, 1);
- stream_putl (s, nexthop->ifindex);
- break;
- }
- }
- /* Metric */
- stream_putl (s, rib->metric);
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- int
- zsend_ipv4_delete_multipath (struct zserv *client, struct prefix *p,
- struct rib *rib)
- {
- int psize;
- struct stream *s;
- struct nexthop *nexthop;
- struct in_addr empty;
- empty.s_addr = 0;
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- /* Put command, type and nexthop. */
- stream_putc (s, ZEBRA_IPV4_ROUTE_DELETE);
- stream_putc (s, rib->type);
- stream_putc (s, rib->flags);
- stream_putc (s, ZAPI_MESSAGE_NEXTHOP|ZAPI_MESSAGE_IFINDEX);
- /* Prefix. */
- psize = PSIZE (p->prefixlen);
- stream_putc (s, p->prefixlen);
- stream_write (s, (u_char *)&p->u.prefix, psize);
- /* Nexthop */
- for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
- {
- if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
- {
- stream_putc (s, 1);
- if (nexthop->type == NEXTHOP_TYPE_IPV4)
- stream_put_in_addr (s, &nexthop->gate.ipv4);
- else
- stream_put_in_addr (s, &empty);
- /* Interface index. */
- stream_putc (s, 1);
- stream_putl (s, nexthop->ifindex);
- break;
- }
- }
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- int
- zsend_ipv4_add (struct zserv *client, int type, int flags,
- struct prefix_ipv4 *p, struct in_addr *nexthop,
- unsigned int ifindex)
- {
- int psize;
- struct stream *s;
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- /* Put command, type and nexthop. */
- stream_putc (s, ZEBRA_IPV4_ROUTE_ADD);
- stream_putc (s, type);
- stream_putc (s, flags);
- stream_putc (s, ZAPI_MESSAGE_NEXTHOP|ZAPI_MESSAGE_IFINDEX);
- /* Prefix. */
- psize = PSIZE (p->prefixlen);
- stream_putc (s, p->prefixlen);
- stream_write (s, (u_char *)&p->prefix, psize);
- /* Nexthop */
- stream_putc (s, 1);
- stream_put_in_addr (s, nexthop);
- /* Interface index. */
- stream_putc (s, 1);
- stream_putl (s, ifindex);
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- int
- zsend_ipv4_delete (struct zserv *client, int type, int flags,
- struct prefix_ipv4 *p, struct in_addr *nexthop,
- unsigned int ifindex)
- {
- int psize;
- struct stream *s;
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- /* Put command, type and nexthop. */
- stream_putc (s, ZEBRA_IPV4_ROUTE_DELETE);
- stream_putc (s, type);
- stream_putc (s, flags);
- stream_putc (s, ZAPI_MESSAGE_NEXTHOP|ZAPI_MESSAGE_IFINDEX);
- /* Prefix. */
- psize = PSIZE (p->prefixlen);
- stream_putc (s, p->prefixlen);
- stream_write (s, (u_char *)&p->prefix, psize);
- /* Nexthop */
- stream_putc (s, 1);
- stream_put_in_addr (s, nexthop);
- /* Interface index. */
- stream_putc (s, 1);
- stream_putl (s, ifindex);
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- #ifdef HAVE_IPV6
- int
- zsend_ipv6_add (struct zserv *client, int type, int flags,
- struct prefix_ipv6 *p, struct in6_addr *nexthop,
- unsigned int ifindex)
- {
- int psize;
- struct stream *s;
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- /* Put command, type and nexthop. */
- stream_putc (s, ZEBRA_IPV6_ROUTE_ADD);
- stream_putc (s, type);
- stream_putc (s, flags);
- stream_putc (s, ZAPI_MESSAGE_NEXTHOP|ZAPI_MESSAGE_IFINDEX);
- /* Prefix. */
- psize = PSIZE (p->prefixlen);
- stream_putc (s, p->prefixlen);
- stream_write (s, (u_char *)&p->prefix, psize);
- /* Nexthop */
- stream_putc (s, 1);
- stream_write (s, (u_char *)nexthop, 16);
- /* Interface index. */
- stream_putc (s, 1);
- stream_putl (s, ifindex);
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- int
- zsend_ipv6_add_multipath (struct zserv *client, struct prefix *p,
- struct rib *rib)
- {
- int psize;
- struct stream *s;
- struct nexthop *nexthop;
- struct in6_addr empty;
- memset (&empty, 0, sizeof (struct in6_addr));
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- /* Put command, type and nexthop. */
- stream_putc (s, ZEBRA_IPV6_ROUTE_ADD);
- stream_putc (s, rib->type);
- stream_putc (s, rib->flags);
- stream_putc (s, ZAPI_MESSAGE_NEXTHOP | ZAPI_MESSAGE_IFINDEX | ZAPI_MESSAGE_METRIC);
- /* Prefix. */
- psize = PSIZE (p->prefixlen);
- stream_putc (s, p->prefixlen);
- stream_write (s, (u_char *) &p->u.prefix, psize);
- /* Nexthop */
- for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
- {
- if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
- {
- stream_putc (s, 1);
- if (nexthop->type == NEXTHOP_TYPE_IPV6)
- stream_write (s, (u_char *) &nexthop->gate.ipv6, 16);
- else
- stream_write (s, (u_char *) &empty, 16);
- /* Interface index. */
- stream_putc (s, 1);
- stream_putl (s, nexthop->ifindex);
- break;
- }
- }
- /* Metric */
- stream_putl (s, rib->metric);
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- int
- zsend_ipv6_delete (struct zserv *client, int type, int flags,
- struct prefix_ipv6 *p, struct in6_addr *nexthop,
- unsigned int ifindex)
- {
- int psize;
- struct stream *s;
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- /* Put command, type and nexthop. */
- stream_putc (s, ZEBRA_IPV6_ROUTE_DELETE);
- stream_putc (s, type);
- stream_putc (s, flags);
- stream_putc (s, ZAPI_MESSAGE_NEXTHOP|ZAPI_MESSAGE_IFINDEX);
- /* Prefix. */
- psize = PSIZE (p->prefixlen);
- stream_putc (s, p->prefixlen);
- stream_write (s, (u_char *)&p->prefix, psize);
- /* Nexthop */
- stream_putc (s, 1);
- stream_write (s, (u_char *)nexthop, 16);
- /* Interface index. */
- stream_putc (s, 1);
- stream_putl (s, ifindex);
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- int
- zsend_ipv6_delete_multipath (struct zserv *client, struct prefix *p,
- struct rib *rib)
- {
- int psize;
- struct stream *s;
- struct nexthop *nexthop;
- struct in6_addr empty;
- memset (&empty, 0, sizeof (struct in6_addr));
- s = client->obuf;
- stream_reset (s);
- /* Place holder for size. */
- stream_putw (s, 0);
- /* Put command, type and nexthop. */
- stream_putc (s, ZEBRA_IPV6_ROUTE_DELETE);
- stream_putc (s, rib->type);
- stream_putc (s, rib->flags);
- stream_putc (s, ZAPI_MESSAGE_NEXTHOP|ZAPI_MESSAGE_IFINDEX);
- /* Prefix. */
- psize = PSIZE (p->prefixlen);
- stream_putc (s, p->prefixlen);
- stream_write (s, (u_char *)&p->u.prefix, psize);
- /* Nexthop */
- for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
- {
- if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
- {
- stream_putc (s, 1);
- if (nexthop->type == NEXTHOP_TYPE_IPV6)
- stream_write (s, (u_char *) &nexthop->gate.ipv6, 16);
- else
- stream_write (s, (u_char *) &empty, 16);
- /* Interface index. */
- stream_putc (s, 1);
- stream_putl (s, nexthop->ifindex);
- break;
- }
- }
- /* Write packet size. */
- stream_putw_at (s, 0, stream_get_endp (s));
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- int
- zsend_ipv6_nexthop_lookup (struct zserv *client, struct in6_addr *addr)
- {
- struct stream *s;
- struct rib *rib;
- unsigned long nump;
- u_char num;
- struct nexthop *nexthop;
- /* Lookup nexthop. */
- rib = rib_match_ipv6 (addr);
- /* Get output stream. */
- s = client->obuf;
- stream_reset (s);
- /* Fill in result. */
- stream_putw (s, 0);
- stream_putc (s, ZEBRA_IPV6_NEXTHOP_LOOKUP);
- stream_put (s, &addr, 16);
- if (rib)
- {
- stream_putl (s, rib->metric);
- num = 0;
- nump = s->putp;
- stream_putc (s, 0);
- for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
- if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
- {
- stream_putc (s, nexthop->type);
- switch (nexthop->type)
- {
- case ZEBRA_NEXTHOP_IPV6:
- stream_put (s, &nexthop->gate.ipv6, 16);
- break;
- case ZEBRA_NEXTHOP_IPV6_IFINDEX:
- case ZEBRA_NEXTHOP_IPV6_IFNAME:
- stream_put (s, &nexthop->gate.ipv6, 16);
- stream_putl (s, nexthop->ifindex);
- break;
- case ZEBRA_NEXTHOP_IFINDEX:
- case ZEBRA_NEXTHOP_IFNAME:
- stream_putl (s, nexthop->ifindex);
- break;
- }
- num++;
- }
- stream_putc_at (s, nump, num);
- }
- else
- {
- stream_putl (s, 0);
- stream_putc (s, 0);
- }
- stream_putw_at (s, 0, stream_get_endp (s));
-
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- #endif /* HAVE_IPV6 */
- int
- zsend_ipv4_nexthop_lookup (struct zserv *client, struct in_addr addr)
- {
- struct stream *s;
- struct rib *rib;
- unsigned long nump;
- u_char num;
- struct nexthop *nexthop;
- /* Lookup nexthop. */
- rib = rib_match_ipv4 (addr);
- /* Get output stream. */
- s = client->obuf;
- stream_reset (s);
- /* Fill in result. */
- stream_putw (s, 0);
- stream_putc (s, ZEBRA_IPV4_NEXTHOP_LOOKUP);
- stream_put_in_addr (s, &addr);
- if (rib)
- {
- stream_putl (s, rib->metric);
- num = 0;
- nump = s->putp;
- stream_putc (s, 0);
- for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
- if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
- {
- stream_putc (s, nexthop->type);
- switch (nexthop->type)
- {
- case ZEBRA_NEXTHOP_IPV4:
- stream_put_in_addr (s, &nexthop->gate.ipv4);
- break;
- case ZEBRA_NEXTHOP_IFINDEX:
- case ZEBRA_NEXTHOP_IFNAME:
- stream_putl (s, nexthop->ifindex);
- break;
- }
- num++;
- }
- stream_putc_at (s, nump, num);
- }
- else
- {
- stream_putl (s, 0);
- stream_putc (s, 0);
- }
- stream_putw_at (s, 0, stream_get_endp (s));
-
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- int
- zsend_ipv4_import_lookup (struct zserv *client, struct prefix_ipv4 *p)
- {
- struct stream *s;
- struct rib *rib;
- unsigned long nump;
- u_char num;
- struct nexthop *nexthop;
- /* Lookup nexthop. */
- rib = rib_lookup_ipv4 (p);
- /* Get output stream. */
- s = client->obuf;
- stream_reset (s);
- /* Fill in result. */
- stream_putw (s, 0);
- stream_putc (s, ZEBRA_IPV4_IMPORT_LOOKUP);
- stream_put_in_addr (s, &p->prefix);
- if (rib)
- {
- stream_putl (s, rib->metric);
- num = 0;
- nump = s->putp;
- stream_putc (s, 0);
- for (nexthop = rib->nexthop; nexthop; nexthop = nexthop->next)
- if (CHECK_FLAG (nexthop->flags, NEXTHOP_FLAG_FIB))
- {
- stream_putc (s, nexthop->type);
- switch (nexthop->type)
- {
- case ZEBRA_NEXTHOP_IPV4:
- stream_put_in_addr (s, &nexthop->gate.ipv4);
- break;
- case ZEBRA_NEXTHOP_IFINDEX:
- case ZEBRA_NEXTHOP_IFNAME:
- stream_putl (s, nexthop->ifindex);
- break;
- }
- num++;
- }
- stream_putc_at (s, nump, num);
- }
- else
- {
- stream_putl (s, 0);
- stream_putc (s, 0);
- }
- stream_putw_at (s, 0, stream_get_endp (s));
-
- zebra_server_send_message (client->sock, s->data, stream_get_endp (s));
- return 0;
- }
- /* Register zebra server interface information. Send current all
- interface and address information. */
- void
- zread_interface_add (struct zserv *client, u_short length)
- {
- listnode ifnode;
- listnode cnode;
- struct interface *ifp;
- struct connected *c;
- /* Interface information is needed. */
- client->ifinfo = 1;
- for (ifnode = listhead (iflist); ifnode; ifnode = nextnode (ifnode))
- {
- ifp = getdata (ifnode);
- /* Skip pseudo interface. */
- if (! CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE))
- continue;
- zsend_interface_add (client, ifp);
- for (cnode = listhead (ifp->connected); cnode; nextnode (cnode))
- {
- c = getdata (cnode);
- if (CHECK_FLAG (c->conf, ZEBRA_IFC_REAL))
- zsend_interface_address_add (client, ifp, c);
- }
- }
- }
- /* Unregister zebra server interface information. */
- void
- zread_interface_delete (struct zserv *client, u_short length)
- {
- client->ifinfo = 0;
- }
- /* This function support multiple nexthop. */
- void
- zread_ipv4_add (struct zserv *client, u_short length)
- {
- int i;
- struct rib *rib;
- struct prefix_ipv4 p;
- u_char message;
- struct in_addr nexthop;
- u_char nexthop_num;
- u_char nexthop_type;
- struct stream *s;
- unsigned int ifindex;
- u_char ifname_len;
- /* Get input stream. */
- s = client->ibuf;
- /* Allocate new rib. */
- rib = XMALLOC (MTYPE_RIB, sizeof (struct rib));
- memset (rib, 0, sizeof (struct rib));
- /* Type, flags, message. */
- rib->type = stream_getc (s);
- rib->flags = stream_getc (s);
- message = stream_getc (s);
- rib->uptime = time (NULL);
- /* IPv4 prefix. */
- memset (&p, 0, sizeof (struct prefix_ipv4));
- p.family = AF_INET;
- p.prefixlen = stream_getc (s);
- stream_get (&p.prefix, s, PSIZE (p.prefixlen));
- /* Nexthop parse. */
- if (CHECK_FLAG (message, ZAPI_MESSAGE_NEXTHOP))
- {
- nexthop_num = stream_getc (s);
- for (i = 0; i < nexthop_num; i++)
- {
- nexthop_type = stream_getc (s);
- switch (nexthop_type)
- {
- case ZEBRA_NEXTHOP_IFINDEX:
- ifindex = stream_getl (s);
- nexthop_ifindex_add (rib, ifindex);
- break;
- case ZEBRA_NEXTHOP_IFNAME:
- ifname_len = stream_getc (s);
- stream_forward (s, ifname_len);
- break;
- case ZEBRA_NEXTHOP_IPV4:
- nexthop.s_addr = stream_get_ipv4 (s);
- nexthop_ipv4_add (rib, &nexthop);
- break;
- case ZEBRA_NEXTHOP_IPV6:
- stream_forward (s, IPV6_MAX_BYTELEN);
- break;
- case ZEBRA_NEXTHOP_BLACKHOLE:
- nexthop_blackhole_add (rib);
- break;
- }
- }
- }
- /* Distance. */
- if (CHECK_FLAG (message, ZAPI_MESSAGE_DISTANCE))
- rib->distance = stream_getc (s);
- /* Metric. */
- if (CHECK_FLAG (message, ZAPI_MESSAGE_METRIC))
- rib->metric = stream_getl (s);
-
- rib_add_ipv4_multipath (&p, rib);
- }
- /* Zebra server IPv4 prefix delete function. */
- void
- zread_ipv4_delete (struct zserv *client, u_short length)
- {
- int i;
- struct stream *s;
- struct zapi_ipv4 api;
- struct in_addr nexthop;
- unsigned long ifindex;
- struct prefix_ipv4 p;
- u_char nexthop_num;
- u_char nexthop_type;
- u_char ifname_len;
-
- s = client->ibuf;
- ifindex = 0;
- nexthop.s_addr = 0;
- /* Type, flags, message. */
- api.type = stream_getc (s);
- api.flags = stream_getc (s);
- api.message = stream_getc (s);
- /* IPv4 prefix. */
- memset (&p, 0, sizeof (struct prefix_ipv4));
- p.family = AF_INET;
- 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))
- {
- nexthop_num = stream_getc (s);
- for (i = 0; i < nexthop_num; i++)
- {
- nexthop_type = stream_getc (s);
- switch (nexthop_type)
- {
- case ZEBRA_NEXTHOP_IFINDEX:
- ifindex = stream_getl (s);
- break;
- case ZEBRA_NEXTHOP_IFNAME:
- ifname_len = stream_getc (s);
- stream_forward (s, ifname_len);
- break;
- case ZEBRA_NEXTHOP_IPV4:
- nexthop.s_addr = stream_get_ipv4 (s);
- break;
- case ZEBRA_NEXTHOP_IPV6:
- stream_forward (s, IPV6_MAX_BYTELEN);
- break;
- }
- }
- }
- /* Distance. */
- if (CHECK_FLAG (api.message, ZAPI_MESSAGE_DISTANCE))
- api.distance = stream_getc (s);
- else
- api.distance = 0;
- /* Metric. */
- if (CHECK_FLAG (api.message, ZAPI_MESSAGE_METRIC))
- api.metric = stream_getl (s);
- else
- api.metric = 0;
-
- rib_delete_ipv4 (api.type, api.flags, &p, &nexthop, ifindex,
- client->rtm_table);
- }
- /* Nexthop lookup for IPv4. */
- void
- zread_ipv4_nexthop_lookup (struct zserv *client, u_short length)
- {
- struct in_addr addr;
- addr.s_addr = stream_get_ipv4 (client->ibuf);
- zsend_ipv4_nexthop_lookup (client, addr);
- }
- /* Nexthop lookup for IPv4. */
- void
- zread_ipv4_import_lookup (struct zserv *client, u_short length)
- {
- struct prefix_ipv4 p;
- p.family = AF_INET;
- p.prefixlen = stream_getc (client->ibuf);
- p.prefix.s_addr = stream_get_ipv4 (client->ibuf);
- zsend_ipv4_import_lookup (client, &p);
- }
- #ifdef HAVE_IPV6
- /* Zebra server IPv6 prefix add function. */
- void
- zread_ipv6_add (struct zserv *client, u_short length)
- {
- int i;
- struct stream *s;
- struct zapi_ipv6 api;
- struct in6_addr nexthop;
- unsigned long ifindex;
- struct prefix_ipv6 p;
-
- s = client->ibuf;
- ifindex = 0;
- memset (&nexthop, 0, sizeof (struct in6_addr));
- /* Type, flags, message. */
- api.type = stream_getc (s);
- api.flags = stream_getc (s);
- api.message = stream_getc (s);
- /* IPv4 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))
- {
- u_char nexthop_type;
- api.nexthop_num = stream_getc (s);
- for (i = 0; i < api.nexthop_num; i++)
- {
- nexthop_type = stream_getc (s);
- switch (nexthop_type)
- {
- case ZEBRA_NEXTHOP_IPV6:
- stream_get (&nexthop, s, 16);
- break;
- case ZEBRA_NEXTHOP_IFINDEX:
- ifindex = stream_getl (s);
- break;
- }
- }
- }
- 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 (IN6_IS_ADDR_UNSPECIFIED (&nexthop))
- rib_add_ipv6 (api.type, api.flags, &p, NULL, ifindex, 0);
- else
- rib_add_ipv6 (api.type, api.flags, &p, &nexthop, ifindex, 0);
- }
- /* Zebra server IPv6 prefix delete function. */
- void
- zread_ipv6_delete (struct zserv *client, u_short length)
- {
- int i;
- struct stream *s;
- struct zapi_ipv6 api;
- struct in6_addr nexthop;
- unsigned long ifindex;
- struct prefix_ipv6 p;
-
- s = client->ibuf;
- ifindex = 0;
- memset (&nexthop, 0, sizeof (struct in6_addr));
- /* Type, flags, message. */
- api.type = stream_getc (s);
- api.flags = stream_getc (s);
- api.message = stream_getc (s);
- /* IPv4 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))
- {
- u_char nexthop_type;
- api.nexthop_num = stream_getc (s);
- for (i = 0; i < api.nexthop_num; i++)
- {
- nexthop_type = stream_getc (s);
- switch (nexthop_type)
- {
- case ZEBRA_NEXTHOP_IPV6:
- stream_get (&nexthop, s, 16);
- break;
- case ZEBRA_NEXTHOP_IFINDEX:
- ifindex = stream_getl (s);
- break;
- }
- }
- }
- 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 (IN6_IS_ADDR_UNSPECIFIED (&nexthop))
- rib_delete_ipv6 (api.type, api.flags, &p, NULL, ifindex, 0);
- else
- rib_delete_ipv6 (api.type, api.flags, &p, &nexthop, ifindex, 0);
- }
- void
- zebra_read_ipv6 (int command, struct zserv *client, u_short length)
- {
- u_char type;
- u_char flags;
- struct in6_addr nexthop, *gate;
- u_char *lim;
- u_char *pnt;
- unsigned int ifindex;
- pnt = stream_pnt (client->ibuf);
- lim = pnt + length;
- type = stream_getc (client->ibuf);
- flags = stream_getc (client->ibuf);
- stream_get (&nexthop, client->ibuf, sizeof (struct in6_addr));
-
- while (stream_pnt (client->ibuf) < lim)
- {
- int size;
- struct prefix_ipv6 p;
-
- ifindex = stream_getl (client->ibuf);
- memset (&p, 0, sizeof (struct prefix_ipv6));
- p.family = AF_INET6;
- p.prefixlen = stream_getc (client->ibuf);
- size = PSIZE(p.prefixlen);
- stream_get (&p.prefix, client->ibuf, size);
- if (IN6_IS_ADDR_UNSPECIFIED (&nexthop))
- gate = NULL;
- else
- gate = &nexthop;
- if (command == ZEBRA_IPV6_ROUTE_ADD)
- rib_add_ipv6 (type, flags, &p, gate, ifindex, 0);
- else
- rib_delete_ipv6 (type, flags, &p, gate, ifindex, 0);
- }
- }
- void
- zread_ipv6_nexthop_lookup (struct zserv *client, u_short length)
- {
- struct in6_addr addr;
- char buf[BUFSIZ];
- stream_get (&addr, client->ibuf, 16);
- printf ("DEBUG %sn", inet_ntop (AF_INET6, &addr, buf, BUFSIZ));
- zsend_ipv6_nexthop_lookup (client, &addr);
- }
- #endif /* HAVE_IPV6 */
- /* Close zebra client. */
- void
- zebra_client_close (struct zserv *client)
- {
- /* Close file descriptor. */
- if (client->sock)
- {
- close (client->sock);
- client->sock = -1;
- }
- /* Free stream buffers. */
- if (client->ibuf)
- stream_free (client->ibuf);
- if (client->obuf)
- stream_free (client->obuf);
- /* Release threads. */
- if (client->t_read)
- thread_cancel (client->t_read);
- if (client->t_write)
- thread_cancel (client->t_write);
- /* Free client structure. */
- listnode_delete (client_list, client);
- XFREE (0, client);
- }
- /* Make new client. */
- void
- zebra_client_create (int sock)
- {
- struct zserv *client;
- client = XCALLOC (0, sizeof (struct zserv));
- /* Make client input/output buffer. */
- client->sock = sock;
- client->ibuf = stream_new (ZEBRA_MAX_PACKET_SIZ);
- client->obuf = stream_new (ZEBRA_MAX_PACKET_SIZ);
- /* Set table number. */
- client->rtm_table = rtm_table_default;
- /* Add this client to linked list. */
- listnode_add (client_list, client);
-
- /* Make new read thread. */
- zebra_event (ZEBRA_READ, sock, client);
- }
- /* Handler of zebra service request. */
- int
- zebra_client_read (struct thread *thread)
- {
- int sock;
- struct zserv *client;
- int nbyte;
- u_short length;
- u_char command;
- /* Get thread data. Reset reading thread because I'm running. */
- sock = THREAD_FD (thread);
- client = THREAD_ARG (thread);
- client->t_read = NULL;
- /* Read length and command. */
- nbyte = stream_read (client->ibuf, sock, 3);
- if (nbyte <= 0)
- {
- if (IS_ZEBRA_DEBUG_EVENT)
- zlog_info ("connection closed socket [%d]", sock);
- zebra_client_close (client);
- return -1;
- }
- length = stream_getw (client->ibuf);
- command = stream_getc (client->ibuf);
- if (length < 3)
- {
- if (IS_ZEBRA_DEBUG_EVENT)
- zlog_info ("length %d is less than 3 ", length);
- zebra_client_close (client);
- return -1;
- }
- length -= 3;
- /* Read rest of data. */
- if (length)
- {
- nbyte = stream_read (client->ibuf, sock, length);
- if (nbyte <= 0)
- {
- if (IS_ZEBRA_DEBUG_EVENT)
- zlog_info ("connection closed [%d] when reading zebra data", sock);
- zebra_client_close (client);
- return -1;
- }
- }
- /* Debug packet information. */
- if (IS_ZEBRA_DEBUG_EVENT)
- zlog_info ("zebra message comes from socket [%d]", sock);
- if (IS_ZEBRA_DEBUG_PACKET && IS_ZEBRA_DEBUG_RECV)
- zlog_info ("zebra message received [%s] %d",
- zebra_command_str[command], length);
- switch (command)
- {
- case ZEBRA_INTERFACE_ADD:
- zread_interface_add (client, length);
- break;
- case ZEBRA_INTERFACE_DELETE:
- zread_interface_delete (client, length);
- break;
- case ZEBRA_IPV4_ROUTE_ADD:
- zread_ipv4_add (client, length);
- break;
- case ZEBRA_IPV4_ROUTE_DELETE:
- zread_ipv4_delete (client, length);
- break;
- #ifdef HAVE_IPV6
- case ZEBRA_IPV6_ROUTE_ADD:
- zread_ipv6_add (client, length);
- break;
- case ZEBRA_IPV6_ROUTE_DELETE:
- zread_ipv6_delete (client, length);
- break;
- #endif /* HAVE_IPV6 */
- case ZEBRA_REDISTRIBUTE_ADD:
- zebra_redistribute_add (command, client, length);
- break;
- case ZEBRA_REDISTRIBUTE_DELETE:
- zebra_redistribute_delete (command, client, length);
- break;
- case ZEBRA_REDISTRIBUTE_DEFAULT_ADD:
- zebra_redistribute_default_add (command, client, length);
- break;
- case ZEBRA_REDISTRIBUTE_DEFAULT_DELETE:
- zebra_redistribute_default_delete (command, client, length);
- break;
- case ZEBRA_IPV4_NEXTHOP_LOOKUP:
- zread_ipv4_nexthop_lookup (client, length);
- break;
- #ifdef HAVE_IPV6
- case ZEBRA_IPV6_NEXTHOP_LOOKUP:
- zread_ipv6_nexthop_lookup (client, length);
- break;
- #endif /* HAVE_IPV6 */
- case ZEBRA_IPV4_IMPORT_LOOKUP:
- zread_ipv4_import_lookup (client, length);
- break;
- default:
- zlog_info ("Zebra received unknown command %d", command);
- break;
- }
- stream_reset (client->ibuf);
- zebra_event (ZEBRA_READ, sock, client);
- return 0;
- }
- /* Write output buffer to the socket. */
- void
- zebra_write (struct thread *thread)
- {
- int sock;
- struct zserv *client;
- /* Thread treatment. */
- sock = THREAD_FD (thread);
- client = THREAD_ARG (thread);
- client->t_write = NULL;
- stream_flush (client->obuf, sock);
- }
- /* Accept code of zebra server socket. */
- int
- zebra_accept (struct thread *thread)
- {
- int val;
- int accept_sock;
- int client_sock;
- struct sockaddr_in client;
- socklen_t len;
- accept_sock = THREAD_FD (thread);
- len = sizeof (struct sockaddr_in);
- client_sock = accept (accept_sock, (struct sockaddr *) &client, &len);
- if (client_sock < 0)
- {
- zlog_warn ("Can't accept zebra socket: %s", strerror (errno));
- return -1;
- }
- /* Make client socket non-blocking. */
- val = fcntl (client_sock, F_GETFL, 0);
- fcntl (client_sock, F_SETFL, (val | O_NONBLOCK));
- /* Create new zebra client. */
- zebra_client_create (client_sock);
- /* Register myself. */
- zebra_event (ZEBRA_SERV, accept_sock, NULL);
- return 0;
- }
- /* Make zebra's server socket. */
- void
- zebra_serv ()
- {
- int ret;
- int accept_sock;
- struct sockaddr_in addr;
- accept_sock = socket (AF_INET, SOCK_STREAM, 0);
- if (accept_sock < 0)
- {
- zlog_warn ("Can't bind to socket: %s", strerror (errno));
- zlog_warn ("zebra can't provice full functionality due to above error");
- return;
- }
- memset (&addr, 0, sizeof (struct sockaddr_in));
- addr.sin_family = AF_INET;
- addr.sin_port = htons (ZEBRA_PORT);
- #ifdef HAVE_SIN_LEN
- addr.sin_len = sizeof (struct sockaddr_in);
- #endif /* HAVE_SIN_LEN */
- addr.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
- sockopt_reuseaddr (accept_sock);
- sockopt_reuseport (accept_sock);
- ret = bind (accept_sock, (struct sockaddr *)&addr,
- sizeof (struct sockaddr_in));
- if (ret < 0)
- {
- zlog_warn ("Can't bind to socket: %s", strerror (errno));
- zlog_warn ("zebra can't provice full functionality due to above error");
- close (accept_sock); /* Avoid sd leak. */
- return;
- }
- ret = listen (accept_sock, 1);
- if (ret < 0)
- {
- zlog_warn ("Can't listen to socket: %s", strerror (errno));
- zlog_warn ("zebra can't provice full functionality due to above error");
- close (accept_sock); /* Avoid sd leak. */
- return;
- }
- zebra_event (ZEBRA_SERV, accept_sock, NULL);
- }
- /* For sockaddr_un. */
- #include <sys/un.h>
- /* zebra server UNIX domain socket. */
- void
- zebra_serv_un (char *path)
- {
- int ret;
- int sock, len;
- struct sockaddr_un serv;
- mode_t old_mask;
- /* First of all, unlink existing socket */
- unlink (path);
- /* Set umask */
- old_mask = umask (0077);
- /* Make UNIX domain socket. */
- sock = socket (AF_UNIX, SOCK_STREAM, 0);
- if (sock < 0)
- {
- perror ("sock");
- return;
- }
- /* Make server socket. */
- memset (&serv, 0, sizeof (struct sockaddr_un));
- serv.sun_family = AF_UNIX;
- strncpy (serv.sun_path, path, strlen (path));
- #ifdef HAVE_SUN_LEN
- len = serv.sun_len = SUN_LEN(&serv);
- #else
- len = sizeof (serv.sun_family) + strlen (serv.sun_path);
- #endif /* HAVE_SUN_LEN */
- ret = bind (sock, (struct sockaddr *) &serv, len);
- if (ret < 0)
- {
- perror ("bind");
- close (sock);
- return;
- }
- ret = listen (sock, 5);
- if (ret < 0)
- {
- perror ("listen");
- close (sock);
- return;
- }
- umask (old_mask);
- zebra_event (ZEBRA_SERV, sock, NULL);
- }
- /* Zebra's event management function. */
- extern struct thread_master *master;
- void
- zebra_event (enum event event, int sock, struct zserv *client)
- {
- switch (event)
- {
- case ZEBRA_SERV:
- thread_add_read (master, zebra_accept, client, sock);
- break;
- case ZEBRA_READ:
- client->t_read =
- thread_add_read (master, zebra_client_read, client, sock);
- break;
- case ZEBRA_WRITE:
- /**/
- break;
- }
- }
- /* Display default rtm_table for all clients. */
- DEFUN (show_table,
- show_table_cmd,
- "show table",
- SHOW_STR
- "default routing table to use for all clientsn")
- {
- vty_out (vty, "table %d%s", rtm_table_default,
- VTY_NEWLINE);
- return CMD_SUCCESS;
- }
- DEFUN (config_table,
- config_table_cmd,
- "table TABLENO",
- "Configure target kernel routing tablen"
- "TABLE integern")
- {
- rtm_table_default = strtol (argv[0], (char**)0, 10);
- return CMD_SUCCESS;
- }
- DEFUN (no_ip_forwarding,
- no_ip_forwarding_cmd,
- "no ip forwarding",
- NO_STR
- IP_STR
- "Turn off IP forwarding")
- {
- int ret;
- ret = ipforward ();
- if (ret == 0)
- {
- vty_out (vty, "IP forwarding is already off%s", VTY_NEWLINE);
- return CMD_ERR_NOTHING_TODO;
- }
- ret = ipforward_off ();
- if (ret != 0)
- {
- vty_out (vty, "Can't turn off IP forwarding%s", VTY_NEWLINE);
- return CMD_WARNING;
- }
- return CMD_SUCCESS;
- }
- /* This command is for debugging purpose. */
- DEFUN (show_zebra_client,
- show_zebra_client_cmd,
- "show zebra client",
- SHOW_STR
- "Zebra information"
- "Client information")
- {
- listnode node;
- struct zserv *client;
- for (node = listhead (client_list); node; nextnode (node))
- {
- client = getdata (node);
- vty_out (vty, "Client fd %d%s", client->sock, VTY_NEWLINE);
- }
- return CMD_SUCCESS;
- }
- /* Table configuration write function. */
- int
- config_write_table (struct vty *vty)
- {
- if (rtm_table_default)
- vty_out (vty, "table %d%s", rtm_table_default,
- VTY_NEWLINE);
- return 0;
- }
- /* table node for routing tables. */
- struct cmd_node table_node =
- {
- TABLE_NODE,
- "", /* This node has no interface. */
- 1
- };
- /* Only display ip forwarding is enabled or not. */
- DEFUN (show_ip_forwarding,
- show_ip_forwarding_cmd,
- "show ip forwarding",
- SHOW_STR
- IP_STR
- "IP forwarding statusn")
- {
- int ret;
- ret = ipforward ();
- if (ret == 0)
- vty_out (vty, "IP forwarding is off%s", VTY_NEWLINE);
- else
- vty_out (vty, "IP forwarding is on%s", VTY_NEWLINE);
- return CMD_SUCCESS;
- }
- #ifdef HAVE_IPV6
- /* Only display ipv6 forwarding is enabled or not. */
- DEFUN (show_ipv6_forwarding,
- show_ipv6_forwarding_cmd,
- "show ipv6 forwarding",
- SHOW_STR
- "IPv6 informationn"
- "Forwarding statusn")
- {
- int ret;
- ret = ipforward_ipv6 ();
- switch (ret)
- {
- case -1:
- vty_out (vty, "ipv6 forwarding is unknown%s", VTY_NEWLINE);
- break;
- case 0:
- vty_out (vty, "ipv6 forwarding is %s%s", "off", VTY_NEWLINE);
- break;
- case 1:
- vty_out (vty, "ipv6 forwarding is %s%s", "on", VTY_NEWLINE);
- break;
- default:
- vty_out (vty, "ipv6 forwarding is %s%s", "off", VTY_NEWLINE);
- break;
- }
- return CMD_SUCCESS;
- }
- DEFUN (no_ipv6_forwarding,
- no_ipv6_forwarding_cmd,
- "no ipv6 forwarding",
- NO_STR
- IP_STR
- "Doesn't forward IPv6 protocol packet")
- {
- int ret;
- ret = ipforward_ipv6_off ();
- if (ret != 0)
- {
- vty_out (vty, "Can't turn off IPv6 forwarding%s", VTY_NEWLINE);
- return CMD_WARNING;
- }
- return CMD_SUCCESS;
- }
- #endif /* HAVE_IPV6 */
- /* IPForwarding configuration write function. */
- int
- config_write_forwarding (struct vty *vty)
- {
- if (! ipforward ())
- vty_out (vty, "no ip forwarding%s", VTY_NEWLINE);
- #ifdef HAVE_IPV6
- if (! ipforward_ipv6 ())
- vty_out (vty, "no ipv6 forwarding%s", VTY_NEWLINE);
- #endif /* HAVE_IPV6 */
- vty_out (vty, "!%s", VTY_NEWLINE);
- return 0;
- }
- /* table node for routing tables. */
- struct cmd_node forwarding_node =
- {
- FORWARDING_NODE,
- "", /* This node has no interface. */
- 1
- };
- /* Initialisation of zebra and installation of commands. */
- void
- zebra_init ()
- {
- /* Client list init. */
- client_list = list_new ();
- /* Forwarding is on by default. */
- ipforward_on ();
- #ifdef HAVE_IPV6
- ipforward_ipv6_on ();
- #endif /* HAVE_IPV6 */
- /* Make zebra server socket. */
- #ifdef HAVE_TCP_ZEBRA
- zebra_serv ();
- #else
- zebra_serv_un (ZEBRA_SERV_PATH);
- #endif /* HAVE_TCP_ZEBRA */
- /* Install configuration write function. */
- install_node (&table_node, config_write_table);
- install_node (&forwarding_node, config_write_forwarding);
- install_element (VIEW_NODE, &show_ip_forwarding_cmd);
- install_element (ENABLE_NODE, &show_ip_forwarding_cmd);
- install_element (CONFIG_NODE, &no_ip_forwarding_cmd);
- install_element (ENABLE_NODE, &show_zebra_client_cmd);
- #ifdef HAVE_NETLINK
- install_element (VIEW_NODE, &show_table_cmd);
- install_element (ENABLE_NODE, &show_table_cmd);
- install_element (CONFIG_NODE, &config_table_cmd);
- #endif /* HAVE_NETLINK */
- #ifdef HAVE_IPV6
- install_element (VIEW_NODE, &show_ipv6_forwarding_cmd);
- install_element (ENABLE_NODE, &show_ipv6_forwarding_cmd);
- install_element (CONFIG_NODE, &no_ipv6_forwarding_cmd);
- #endif /* HAVE_IPV6 */
- FIFO_INIT(&message_queue);
- t_write = NULL;
- }