/* * Interface function. * Copyright (C) 1997, 1999 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 #include "if.h" #include "vty.h" #include "sockunion.h" #include "prefix.h" #include "command.h" #include "memory.h" #include "ioctl.h" #include "connected.h" #include "log.h" #include "zclient.h" #include "zebra/interface.h" #include "zebra/rtadv.h" #include "zebra/rib.h" #include "zebra/zserv.h" #include "zebra/redistribute.h" #include "zebra/debug.h" #include "zebra/irdp.h" /* Allocate a new internal interface index * This works done from the top so that %d macros * print a - sign! */ static unsigned int if_new_intern_ifindex (void) { /* Start here so that first one assigned is 0xFFFFFFFF */ static unsigned int ifindex = IFINDEX_INTERNBASE + 1; for (;;) { ifindex--; if ( ifindex <= IFINDEX_INTERNBASE ) ifindex = 0xFFFFFFFF; if (if_lookup_by_index(ifindex) == NULL) return ifindex; } } /* Called when new interface is added. */ int if_zebra_new_hook (struct interface *ifp) { struct zebra_if *zebra_if; zebra_if = XMALLOC (MTYPE_TMP, sizeof (struct zebra_if)); memset (zebra_if, 0, sizeof (struct zebra_if)); zebra_if->multicast = IF_ZEBRA_MULTICAST_UNSPEC; zebra_if->shutdown = IF_ZEBRA_SHUTDOWN_UNSPEC; #ifdef RTADV { /* Set default router advertise values. */ struct rtadvconf *rtadv; rtadv = &zebra_if->rtadv; rtadv->AdvSendAdvertisements = 0; rtadv->MaxRtrAdvInterval = RTADV_MAX_RTR_ADV_INTERVAL; rtadv->MinRtrAdvInterval = RTADV_MIN_RTR_ADV_INTERVAL; rtadv->AdvIntervalTimer = 0; rtadv->AdvManagedFlag = 0; rtadv->AdvOtherConfigFlag = 0; rtadv->AdvHomeAgentFlag = 0; rtadv->AdvLinkMTU = 0; rtadv->AdvReachableTime = 0; rtadv->AdvRetransTimer = 0; rtadv->AdvCurHopLimit = 0; rtadv->AdvDefaultLifetime = RTADV_ADV_DEFAULT_LIFETIME; rtadv->HomeAgentPreference = 0; rtadv->HomeAgentLifetime = RTADV_ADV_DEFAULT_LIFETIME; rtadv->AdvIntervalOption = 0; rtadv->AdvPrefixList = list_new (); } #endif /* RTADV */ /* Initialize installed address chains tree. */ zebra_if->ipv4_subnets = route_table_init (); ifp->info = zebra_if; return 0; } /* Called when interface is deleted. */ int if_zebra_delete_hook (struct interface *ifp) { struct zebra_if *zebra_if; if (ifp->info) { zebra_if = ifp->info; /* Free installed address chains tree. */ if (zebra_if->ipv4_subnets) route_table_finish (zebra_if->ipv4_subnets); XFREE (MTYPE_TMP, zebra_if); } return 0; } /* Tie an interface address to its derived subnet list of addresses. */ int if_subnet_add (struct interface *ifp, struct connected *ifc) { struct route_node *rn; struct zebra_if *zebra_if; struct prefix cp; struct list *addr_list; assert (ifp && ifp->info && ifc); zebra_if = ifp->info; /* Get address derived subnet node and associated address list, while marking address secondary attribute appropriately. */ cp = *ifc->address; apply_mask (&cp); rn = route_node_get (zebra_if->ipv4_subnets, &cp); if ((addr_list = rn->info)) SET_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY); else { UNSET_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY); rn->info = addr_list = list_new (); route_lock_node (rn); } /* Tie address at the tail of address list. */ listnode_add (addr_list, ifc); /* Return list element count. */ return (addr_list->count); } /* Untie an interface address from its derived subnet list of addresses. */ int if_subnet_delete (struct interface *ifp, struct connected *ifc) { struct route_node *rn; struct zebra_if *zebra_if; struct list *addr_list; assert (ifp && ifp->info && ifc); zebra_if = ifp->info; /* Get address derived subnet node. */ rn = route_node_lookup (zebra_if->ipv4_subnets, ifc->address); if (! (rn && rn->info)) return -1; route_unlock_node (rn); /* Untie address from subnet's address list. */ addr_list = rn->info; listnode_delete (addr_list, ifc); route_unlock_node (rn); /* Return list element count, if not empty. */ if (addr_list->count) { /* If deleted address is primary, mark subsequent one as such and distribute. */ if (! CHECK_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY)) { ifc = (struct connected *) addr_list->head->data; zebra_interface_address_delete_update (ifp, ifc); UNSET_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY); zebra_interface_address_add_update (ifp, ifc); } return addr_list->count; } /* Otherwise, free list and route node. */ list_free (addr_list); rn->info = NULL; route_unlock_node (rn); return 0; } /* Wake up configured address if it is not in current kernel address. */ void if_addr_wakeup (struct interface *ifp) { struct listnode *node; struct connected *ifc; struct prefix *p; int ret; for (node = listhead (ifp->connected); node; nextnode (node)) { ifc = getdata (node); p = ifc->address; if (CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED) && ! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)) { /* Address check. */ if (p->family == AF_INET) { if (! if_is_up (ifp)) { if_set_flags (ifp, IFF_UP | IFF_RUNNING); if_refresh (ifp); } ret = if_set_prefix (ifp, ifc); if (ret < 0) { zlog_warn ("Can't set interface's address: %s", safe_strerror(errno)); continue; } /* Add to subnet chain list. */ if_subnet_add (ifp, ifc); SET_FLAG (ifc->conf, ZEBRA_IFC_REAL); zebra_interface_address_add_update (ifp, ifc); if (if_is_operative(ifp)) connected_up_ipv4 (ifp, ifc); } #ifdef HAVE_IPV6 if (p->family == AF_INET6) { if (! if_is_up (ifp)) { if_set_flags (ifp, IFF_UP | IFF_RUNNING); if_refresh (ifp); } ret = if_prefix_add_ipv6 (ifp, ifc); if (ret < 0) { zlog_warn ("Can't set interface's address: %s", safe_strerror(errno)); continue; } SET_FLAG (ifc->conf, ZEBRA_IFC_REAL); zebra_interface_address_add_update (ifp, ifc); if (if_is_operative(ifp)) connected_up_ipv6 (ifp, ifc); } #endif /* HAVE_IPV6 */ } } } /* Handle interface addition */ void if_add_update (struct interface *ifp) { struct zebra_if *if_data; if_data = ifp->info; if (if_data->multicast == IF_ZEBRA_MULTICAST_ON) if_set_flags (ifp, IFF_MULTICAST); else if (if_data->multicast == IF_ZEBRA_MULTICAST_OFF) if_unset_flags (ifp, IFF_MULTICAST); zebra_interface_add_update (ifp); if (! CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE)) { SET_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE); if_addr_wakeup (ifp); if (IS_ZEBRA_DEBUG_KERNEL) zlog_debug ("interface %s index %d becomes active.", ifp->name, ifp->ifindex); } else { if (IS_ZEBRA_DEBUG_KERNEL) zlog_debug ("interface %s index %d is added.", ifp->name, ifp->ifindex); } } /* Handle an interface delete event * * This function is only called when support for * RTM_IFANNOUNCE or AF_NETLINK sockets (RTM_DELLINK message) * is available. It is not called on, eg, Solaris. */ #if (defined(RTM_IFANNOUNCE) || defined(HAVE_NETLINK)) void if_delete_update (struct interface *ifp) { struct listnode *node; struct listnode *next; struct listnode *first; struct listnode *last; struct connected *ifc; struct prefix *p; struct route_node *rn; struct zebra_if *zebra_if; struct list *addr_list; zebra_if = ifp->info; if (if_is_up(ifp)) { zlog_err ("interface %s index %d is still up while being deleted.", ifp->name, ifp->ifindex); return; } /* Mark interface as inactive */ UNSET_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE); if (IS_ZEBRA_DEBUG_KERNEL) zlog_debug ("interface %s index %d is now inactive.", ifp->name, ifp->ifindex); /* Delete connected routes from the kernel. */ if (ifp->connected) { last = NULL; while ((node = (last ? last->next : listhead (ifp->connected)))) { ifc = getdata (node); p = ifc->address; if (p->family == AF_INET) { rn = route_node_lookup (zebra_if->ipv4_subnets, p); route_unlock_node (rn); addr_list = (struct list *) rn->info; /* Remove addresses, secondaries first. */ first = listhead (addr_list); for (node = first->next; node || first; node = next) { if (! node) { node = first; first = NULL; } next = node->next; ifc = getdata (node); p = ifc->address; connected_down_ipv4 (ifp, ifc); zebra_interface_address_delete_update (ifp, ifc); UNSET_FLAG (ifc->conf, ZEBRA_IFC_REAL); /* Remove from subnet chain. */ list_delete_node (addr_list, node); route_unlock_node (rn); /* Remove from interface address list (unconditionally). */ listnode_delete (ifp->connected, ifc); connected_free (ifc); } /* Free chain list and respective route node. */ list_delete (addr_list); rn->info = NULL; route_unlock_node (rn); } #ifdef HAVE_IPV6 else if (p->family == AF_INET6) { connected_down_ipv6 (ifp, ifc); zebra_interface_address_delete_update (ifp, ifc); UNSET_FLAG (ifc->conf, ZEBRA_IFC_REAL); if (CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED)) last = node; else { listnode_delete (ifp->connected, ifc); connected_free (ifc); } } #endif /* HAVE_IPV6 */ } } zebra_interface_delete_update (ifp); } #endif /* (defined(RTM_IFANNOUNCE) || defined(HAVE_NETLINK) */ /* Interface is up. */ void if_up (struct interface *ifp) { struct listnode *node; struct listnode *next; struct connected *ifc; struct prefix *p; /* Notify the protocol daemons. */ zebra_interface_up_update (ifp); /* Install connected routes to the kernel. */ if (ifp->connected) { for (node = listhead (ifp->connected); node; node = next) { next = node->next; ifc = getdata (node); p = ifc->address; if (p->family == AF_INET) connected_up_ipv4 (ifp, ifc); #ifdef HAVE_IPV6 else if (p->family == AF_INET6) connected_up_ipv6 (ifp, ifc); #endif /* HAVE_IPV6 */ } } /* Examine all static routes. */ rib_update (); } /* Interface goes down. We have to manage different behavior of based OS. */ void if_down (struct interface *ifp) { struct listnode *node; struct listnode *next; struct connected *ifc; struct prefix *p; /* Notify to the protocol daemons. */ zebra_interface_down_update (ifp); /* Delete connected routes from the kernel. */ if (ifp->connected) { for (node = listhead (ifp->connected); node; node = next) { next = node->next; ifc = getdata (node); p = ifc->address; if (p->family == AF_INET) connected_down_ipv4 (ifp, ifc); #ifdef HAVE_IPV6 else if (p->family == AF_INET6) connected_down_ipv6 (ifp, ifc); #endif /* HAVE_IPV6 */ } } /* Examine all static routes which direct to the interface. */ rib_update (); } void if_refresh (struct interface *ifp) { if (if_is_operative (ifp)) { if_get_flags (ifp); if (! if_is_operative (ifp)) if_down (ifp); } else { if_get_flags (ifp); if (if_is_operative (ifp)) if_up (ifp); } } /* Printout flag information into vty */ void if_flag_dump_vty (struct vty *vty, unsigned long flag) { int separator = 0; #define IFF_OUT_VTY(X, Y) \ if ((X) && (flag & (X))) \ { \ if (separator) \ vty_out (vty, ","); \ else \ separator = 1; \ vty_out (vty, Y); \ } vty_out (vty, "<"); IFF_OUT_VTY (IFF_UP, "UP"); IFF_OUT_VTY (IFF_BROADCAST, "BROADCAST"); IFF_OUT_VTY (IFF_DEBUG, "DEBUG"); IFF_OUT_VTY (IFF_LOOPBACK, "LOOPBACK"); IFF_OUT_VTY (IFF_POINTOPOINT, "POINTOPOINT"); IFF_OUT_VTY (IFF_NOTRAILERS, "NOTRAILERS"); IFF_OUT_VTY (IFF_RUNNING, "RUNNING"); IFF_OUT_VTY (IFF_NOARP, "NOARP"); IFF_OUT_VTY (IFF_PROMISC, "PROMISC"); IFF_OUT_VTY (IFF_ALLMULTI, "ALLMULTI"); IFF_OUT_VTY (IFF_OACTIVE, "OACTIVE"); IFF_OUT_VTY (IFF_SIMPLEX, "SIMPLEX"); IFF_OUT_VTY (IFF_LINK0, "LINK0"); IFF_OUT_VTY (IFF_LINK1, "LINK1"); IFF_OUT_VTY (IFF_LINK2, "LINK2"); IFF_OUT_VTY (IFF_MULTICAST, "MULTICAST"); #ifdef SOLARIS_IPV6 IFF_OUT_VTY (IFF_IPV4, "IFF_IPv4"); IFF_OUT_VTY (IFF_IPV6, "IFF_IPv6"); #endif /* SOLARIS_IPV6 */ vty_out (vty, ">"); } /* Output prefix string to vty. */ int prefix_vty_out (struct vty *vty, struct prefix *p) { char str[INET6_ADDRSTRLEN]; inet_ntop (p->family, &p->u.prefix, str, sizeof (str)); vty_out (vty, "%s", str); return strlen (str); } /* Dump if address information to vty. */ void connected_dump_vty (struct vty *vty, struct connected *connected) { struct prefix *p; struct interface *ifp; /* Set interface pointer. */ ifp = connected->ifp; /* Print interface address. */ p = connected->address; vty_out (vty, " %s ", prefix_family_str (p)); prefix_vty_out (vty, p); vty_out (vty, "/%d", p->prefixlen); /* If there is destination address, print it. */ p = connected->destination; if (p) { if (p->family == AF_INET) if (ifp->flags & IFF_BROADCAST) { vty_out (vty, " broadcast "); prefix_vty_out (vty, p); } if (ifp->flags & IFF_POINTOPOINT) { vty_out (vty, " pointopoint "); prefix_vty_out (vty, p); } } if (CHECK_FLAG (connected->flags, ZEBRA_IFA_SECONDARY)) vty_out (vty, " secondary"); if (connected->label) vty_out (vty, " %s", connected->label); vty_out (vty, "%s", VTY_NEWLINE); } #ifdef RTADV /* Dump interface ND information to vty. */ void nd_dump_vty (struct vty *vty, struct interface *ifp) { struct zebra_if *zif; struct rtadvconf *rtadv; int interval; zif = (struct zebra_if *) ifp->info; rtadv = &zif->rtadv; if (rtadv->AdvSendAdvertisements) { vty_out (vty, " ND advertised reachable time is %d milliseconds%s", rtadv->AdvReachableTime, VTY_NEWLINE); vty_out (vty, " ND advertised retransmit interval is %d milliseconds%s", rtadv->AdvRetransTimer, VTY_NEWLINE); interval = rtadv->MaxRtrAdvInterval; if (interval % 1000) vty_out (vty, " ND router advertisements are sent every " "%d milliseconds%s", interval, VTY_NEWLINE); else vty_out (vty, " ND router advertisements are sent every " "%d seconds%s", interval / 1000, VTY_NEWLINE); vty_out (vty, " ND router advertisements live for %d seconds%s", rtadv->AdvDefaultLifetime, VTY_NEWLINE); if (rtadv->AdvManagedFlag) vty_out (vty, " Hosts use DHCP to obtain routable addresses.%s", VTY_NEWLINE); else vty_out (vty, " Hosts use stateless autoconfig for addresses.%s", VTY_NEWLINE); if (rtadv->AdvHomeAgentFlag) vty_out (vty, " ND router advertisements with " "Home Agent flag bit set.%s", VTY_NEWLINE); if (rtadv->AdvIntervalOption) vty_out (vty, " ND router advertisements with Adv. Interval option.%s", VTY_NEWLINE); } } #endif /* RTADV */ /* Interface's information print out to vty interface. */ void if_dump_vty (struct vty *vty, struct interface *ifp) { #ifdef HAVE_SOCKADDR_DL struct sockaddr_dl *sdl; #endif /* HAVE_SOCKADDR_DL */ struct connected *connected; struct listnode *node; struct route_node *rn; struct zebra_if *zebra_if; zebra_if = ifp->info; vty_out (vty, "Interface %s is ", ifp->name); if (if_is_up(ifp)) { vty_out (vty, "up, line protocol "); if (CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_LINKDETECTION)) { if (if_is_running(ifp)) vty_out (vty, "is up%s", VTY_NEWLINE); else vty_out (vty, "is down%s", VTY_NEWLINE); } else { vty_out (vty, "detection is disabled%s", VTY_NEWLINE); } } else { vty_out (vty, "down%s", VTY_NEWLINE); } if (ifp->desc) vty_out (vty, " Description: %s%s", ifp->desc, VTY_NEWLINE); if (ifp->ifindex <= 0) { vty_out(vty, " index %d pseudo interface%s", ifp->ifindex, VTY_NEWLINE); return; } else if (! CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE)) { vty_out(vty, " index %d inactive interface%s", ifp->ifindex, VTY_NEWLINE); return; } vty_out (vty, " index %d metric %d mtu %d ", ifp->ifindex, ifp->metric, ifp->mtu); if_flag_dump_vty (vty, ifp->flags); #ifdef HAVE_IPV6 if (ifp->mtu6 != ifp->mtu) vty_out (vty, "mtu6 %d ", ifp->mtu6); #endif vty_out (vty, "%s", VTY_NEWLINE); /* Hardware address. */ #ifdef HAVE_SOCKADDR_DL sdl = &ifp->sdl; if (sdl != NULL && sdl->sdl_alen != 0) { int i; u_char *ptr; vty_out (vty, " HWaddr: "); for (i = 0, ptr = (u_char *)LLADDR (sdl); i < sdl->sdl_alen; i++, ptr++) vty_out (vty, "%s%02x", i == 0 ? "" : ":", *ptr); vty_out (vty, "%s", VTY_NEWLINE); } #else if (ifp->hw_addr_len != 0) { int i; vty_out (vty, " HWaddr: "); for (i = 0; i < ifp->hw_addr_len; i++) vty_out (vty, "%s%02x", i == 0 ? "" : ":", ifp->hw_addr[i]); vty_out (vty, "%s", VTY_NEWLINE); } #endif /* HAVE_SOCKADDR_DL */ /* Bandwidth in kbps */ if (ifp->bandwidth != 0) { vty_out(vty, " bandwidth %u kbps", ifp->bandwidth); vty_out(vty, "%s", VTY_NEWLINE); } for (rn = route_top (zebra_if->ipv4_subnets); rn; rn = route_next (rn)) { if (! rn->info) continue; for (node = listhead ((struct list *) rn->info); node; nextnode (node)) { connected = getdata (node); connected_dump_vty (vty, connected); } } for (node = listhead (ifp->connected); node; nextnode (node)) { connected = getdata (node); if (CHECK_FLAG (connected->conf, ZEBRA_IFC_REAL) && (connected->address->family == AF_INET6)) connected_dump_vty (vty, connected); } #ifdef RTADV nd_dump_vty (vty, ifp); #endif /* RTADV */ #ifdef HAVE_PROC_NET_DEV /* Statistics print out using proc file system. */ vty_out (vty, " %lu input packets (%lu multicast), %lu bytes, " "%lu dropped%s", ifp->stats.rx_packets, ifp->stats.rx_multicast, ifp->stats.rx_bytes, ifp->stats.rx_dropped, VTY_NEWLINE); vty_out (vty, " %lu input errors, %lu length, %lu overrun," " %lu CRC, %lu frame%s", ifp->stats.rx_errors, ifp->stats.rx_length_errors, ifp->stats.rx_over_errors, ifp->stats.rx_crc_errors, ifp->stats.rx_frame_errors, VTY_NEWLINE); vty_out (vty, " %lu fifo, %lu missed%s", ifp->stats.rx_fifo_errors, ifp->stats.rx_missed_errors, VTY_NEWLINE); vty_out (vty, " %lu output packets, %lu bytes, %lu dropped%s", ifp->stats.tx_packets, ifp->stats.tx_bytes, ifp->stats.tx_dropped, VTY_NEWLINE); vty_out (vty, " %lu output errors, %lu aborted, %lu carrier," " %lu fifo, %lu heartbeat%s", ifp->stats.tx_errors, ifp->stats.tx_aborted_errors, ifp->stats.tx_carrier_errors, ifp->stats.tx_fifo_errors, ifp->stats.tx_heartbeat_errors, VTY_NEWLINE); vty_out (vty, " %lu window, %lu collisions%s", ifp->stats.tx_window_errors, ifp->stats.collisions, VTY_NEWLINE); #endif /* HAVE_PROC_NET_DEV */ #ifdef HAVE_NET_RT_IFLIST #if defined (__bsdi__) || defined (__NetBSD__) /* Statistics print out using sysctl (). */ vty_out (vty, " input packets %qu, bytes %qu, dropped %qu," " multicast packets %qu%s", ifp->stats.ifi_ipackets, ifp->stats.ifi_ibytes, ifp->stats.ifi_iqdrops, ifp->stats.ifi_imcasts, VTY_NEWLINE); vty_out (vty, " input errors %qu%s", ifp->stats.ifi_ierrors, VTY_NEWLINE); vty_out (vty, " output packets %qu, bytes %qu, multicast packets %qu%s", ifp->stats.ifi_opackets, ifp->stats.ifi_obytes, ifp->stats.ifi_omcasts, VTY_NEWLINE); vty_out (vty, " output errors %qu%s", ifp->stats.ifi_oerrors, VTY_NEWLINE); vty_out (vty, " collisions %qu%s", ifp->stats.ifi_collisions, VTY_NEWLINE); #else /* Statistics print out using sysctl (). */ vty_out (vty, " input packets %lu, bytes %lu, dropped %lu," " multicast packets %lu%s", ifp->stats.ifi_ipackets, ifp->stats.ifi_ibytes, ifp->stats.ifi_iqdrops, ifp->stats.ifi_imcasts, VTY_NEWLINE); vty_out (vty, " input errors %lu%s", ifp->stats.ifi_ierrors, VTY_NEWLINE); vty_out (vty, " output packets %lu, bytes %lu, multicast packets %lu%s", ifp->stats.ifi_opackets, ifp->stats.ifi_obytes, ifp->stats.ifi_omcasts, VTY_NEWLINE); vty_out (vty, " output errors %lu%s", ifp->stats.ifi_oerrors, VTY_NEWLINE); vty_out (vty, " collisions %lu%s", ifp->stats.ifi_collisions, VTY_NEWLINE); #endif /* __bsdi__ || __NetBSD__ */ #endif /* HAVE_NET_RT_IFLIST */ } /* Check supported address family. */ int if_supported_family (int family) { if (family == AF_INET) return 1; #ifdef HAVE_IPV6 if (family == AF_INET6) return 1; #endif /* HAVE_IPV6 */ return 0; } /* Wrapper hook point for zebra daemon so that ifindex can be set * DEFUN macro not used as extract.pl HAS to ignore this * See also interface_cmd in lib/if.c */ DEFUN_NOSH (zebra_interface, zebra_interface_cmd, "interface IFNAME", "Select an interface to configure\n" "Interface's name\n") { int ret; struct interface * ifp; /* Call lib interface() */ ret = interface_cmd.func (self, vty, argc, argv); ifp = vty->index; /* Set ifindex this only happens if interface is NOT in kernel */ if (ifp->ifindex == 0) { ifp->ifindex = if_new_intern_ifindex (); UNSET_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE); } return ret; } struct cmd_node interface_node = { INTERFACE_NODE, "%s(config-if)# ", 1 }; /* Show all or specified interface to vty. */ DEFUN (show_interface, show_interface_cmd, "show interface [IFNAME]", SHOW_STR "Interface status and configuration\n" "Inteface name\n") { struct listnode *node; struct interface *ifp; #ifdef HAVE_PROC_NET_DEV /* If system has interface statistics via proc file system, update statistics. */ ifstat_update_proc (); #endif /* HAVE_PROC_NET_DEV */ #ifdef HAVE_NET_RT_IFLIST ifstat_update_sysctl (); #endif /* HAVE_NET_RT_IFLIST */ /* Specified interface print. */ if (argc != 0) { ifp = if_lookup_by_name (argv[0]); if (ifp == NULL) { vty_out (vty, "%% Can't find interface %s%s", argv[0], VTY_NEWLINE); return CMD_WARNING; } if_dump_vty (vty, ifp); return CMD_SUCCESS; } /* All interface print. */ for (node = listhead (iflist); node; nextnode (node)) if_dump_vty (vty, getdata (node)); return CMD_SUCCESS; } DEFUN (show_interface_desc, show_interface_desc_cmd, "show interface description", SHOW_STR "Interface status and configuration\n" "Interface description\n") { struct listnode *node; struct interface *ifp; vty_out (vty, "Interface Status Protocol Description%s", VTY_NEWLINE); for (node = listhead (iflist); node; nextnode (node)) { int len; ifp = getdata (node); len = vty_out (vty, "%s", ifp->name); vty_out (vty, "%*s", (16 - len), " "); if (if_is_up(ifp)) { vty_out (vty, "up "); if (CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_LINKDETECTION)) { if (if_is_running(ifp)) vty_out (vty, "up "); else vty_out (vty, "down "); } else { vty_out (vty, "unknown "); } } else { vty_out (vty, "down down "); } if (ifp->desc) vty_out (vty, "%s", ifp->desc); vty_out (vty, "%s", VTY_NEWLINE); } return CMD_SUCCESS; } DEFUN (multicast, multicast_cmd, "multicast", "Set multicast flag to interface\n") { int ret; struct interface *ifp; struct zebra_if *if_data; ifp = (struct interface *) vty->index; if (CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE)) { ret = if_set_flags (ifp, IFF_MULTICAST); if (ret < 0) { vty_out (vty, "Can't set multicast flag%s", VTY_NEWLINE); return CMD_WARNING; } if_refresh (ifp); } if_data = ifp->info; if_data->multicast = IF_ZEBRA_MULTICAST_ON; return CMD_SUCCESS; } DEFUN (no_multicast, no_multicast_cmd, "no multicast", NO_STR "Unset multicast flag to interface\n") { int ret; struct interface *ifp; struct zebra_if *if_data; ifp = (struct interface *) vty->index; if (CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE)) { ret = if_unset_flags (ifp, IFF_MULTICAST); if (ret < 0) { vty_out (vty, "Can't unset multicast flag%s", VTY_NEWLINE); return CMD_WARNING; } if_refresh (ifp); } if_data = ifp->info; if_data->multicast = IF_ZEBRA_MULTICAST_OFF; return CMD_SUCCESS; } DEFUN (linkdetect, linkdetect_cmd, "link-detect", "Enable link detection on interface\n") { struct interface *ifp; int if_was_operative; ifp = (struct interface *) vty->index; if_was_operative = if_is_operative(ifp); SET_FLAG(ifp->status, ZEBRA_INTERFACE_LINKDETECTION); /* When linkdetection is enabled, if might come down */ if (!if_is_operative(ifp) && if_was_operative) if_down(ifp); /* FIXME: Will defer status change forwarding if interface does not come down! */ return CMD_SUCCESS; } DEFUN (no_linkdetect, no_linkdetect_cmd, "no link-detect", NO_STR "Disable link detection on interface\n") { struct interface *ifp; int if_was_operative; ifp = (struct interface *) vty->index; if_was_operative = if_is_operative(ifp); UNSET_FLAG(ifp->status, ZEBRA_INTERFACE_LINKDETECTION); /* Interface may come up after disabling link detection */ if (if_is_operative(ifp) && !if_was_operative) if_up(ifp); /* FIXME: see linkdetect_cmd */ return CMD_SUCCESS; } DEFUN (shutdown_if, shutdown_if_cmd, "shutdown", "Shutdown the selected interface\n") { int ret; struct interface *ifp; struct zebra_if *if_data; ifp = (struct interface *) vty->index; ret = if_unset_flags (ifp, IFF_UP); if (ret < 0) { vty_out (vty, "Can't shutdown interface%s", VTY_NEWLINE); return CMD_WARNING; } if_refresh (ifp); if_data = ifp->info; if_data->shutdown = IF_ZEBRA_SHUTDOWN_ON; return CMD_SUCCESS; } DEFUN (no_shutdown_if, no_shutdown_if_cmd, "no shutdown", NO_STR "Shutdown the selected interface\n") { int ret; struct interface *ifp; struct zebra_if *if_data; ifp = (struct interface *) vty->index; ret = if_set_flags (ifp, IFF_UP | IFF_RUNNING); if (ret < 0) { vty_out (vty, "Can't up interface%s", VTY_NEWLINE); return CMD_WARNING; } if_refresh (ifp); if_data = ifp->info; if_data->shutdown = IF_ZEBRA_SHUTDOWN_OFF; return CMD_SUCCESS; } DEFUN (bandwidth_if, bandwidth_if_cmd, "bandwidth <1-10000000>", "Set bandwidth informational parameter\n" "Bandwidth in kilobits\n") { struct interface *ifp; unsigned int bandwidth; ifp = (struct interface *) vty->index; bandwidth = strtol(argv[0], NULL, 10); /* bandwidth range is <1-10000000> */ if (bandwidth < 1 || bandwidth > 10000000) { vty_out (vty, "Bandwidth is invalid%s", VTY_NEWLINE); return CMD_WARNING; } ifp->bandwidth = bandwidth; /* force protocols to recalculate routes due to cost change */ if (if_is_operative (ifp)) zebra_interface_up_update (ifp); return CMD_SUCCESS; } DEFUN (no_bandwidth_if, no_bandwidth_if_cmd, "no bandwidth", NO_STR "Set bandwidth informational parameter\n") { struct interface *ifp; ifp = (struct interface *) vty->index; ifp->bandwidth = 0; /* force protocols to recalculate routes due to cost change */ if (if_is_operative (ifp)) zebra_interface_up_update (ifp); return CMD_SUCCESS; } ALIAS (no_bandwidth_if, no_bandwidth_if_val_cmd, "no bandwidth <1-10000000>", NO_STR "Set bandwidth informational parameter\n" "Bandwidth in kilobits\n") int ip_address_install (struct vty *vty, struct interface *ifp, const char *addr_str, const char *peer_str, const char *label) { struct prefix_ipv4 cp; struct connected *ifc; struct prefix_ipv4 *p; int ret; ret = str2prefix_ipv4 (addr_str, &cp); if (ret <= 0) { vty_out (vty, "%% Malformed address %s", VTY_NEWLINE); return CMD_WARNING; } ifc = connected_check_ipv4 (ifp, (struct prefix *) &cp); if (! ifc) { ifc = connected_new (); ifc->ifp = ifp; /* Address. */ p = prefix_ipv4_new (); *p = cp; ifc->address = (struct prefix *) p; /* Broadcast. */ if (p->prefixlen <= IPV4_MAX_PREFIXLEN-2) { p = prefix_ipv4_new (); *p = cp; p->prefix.s_addr = ipv4_broadcast_addr(p->prefix.s_addr,p->prefixlen); ifc->destination = (struct prefix *) p; } /* Label. */ if (label) ifc->label = strdup (label); /* Add to linked list. */ listnode_add (ifp->connected, ifc); } /* This address is configured from zebra. */ if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED)) SET_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED); /* In case of this route need to install kernel. */ if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL) && CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE)) { /* Some system need to up the interface to set IP address. */ if (! if_is_up (ifp)) { if_set_flags (ifp, IFF_UP | IFF_RUNNING); if_refresh (ifp); } ret = if_set_prefix (ifp, ifc); if (ret < 0) { vty_out (vty, "%% Can't set interface IP address: %s.%s", safe_strerror(errno), VTY_NEWLINE); return CMD_WARNING; } /* Add to subnet chain list (while marking secondary attribute). */ if_subnet_add (ifp, ifc); /* IP address propery set. */ SET_FLAG (ifc->conf, ZEBRA_IFC_REAL); /* Update interface address information to protocol daemon. */ zebra_interface_address_add_update (ifp, ifc); /* If interface is up register connected route. */ if (if_is_operative(ifp)) connected_up_ipv4 (ifp, ifc); } return CMD_SUCCESS; } int ip_address_uninstall (struct vty *vty, struct interface *ifp, const char *addr_str, const char *peer_str, const char *label) { struct prefix_ipv4 cp; struct connected *ifc; int ret; /* Convert to prefix structure. */ ret = str2prefix_ipv4 (addr_str, &cp); if (ret <= 0) { vty_out (vty, "%% Malformed address %s", VTY_NEWLINE); return CMD_WARNING; } /* Check current interface address. */ ifc = connected_check_ipv4 (ifp, (struct prefix *) &cp); if (! ifc) { vty_out (vty, "%% Can't find address%s", VTY_NEWLINE); return CMD_WARNING; } /* This is not configured address. */ if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED)) return CMD_WARNING; /* This is not real address or interface is not active. */ if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL) || ! CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE)) { listnode_delete (ifp->connected, ifc); connected_free (ifc); return CMD_WARNING; } /* This is real route. */ ret = if_unset_prefix (ifp, ifc); if (ret < 0) { vty_out (vty, "%% Can't unset interface IP address: %s.%s", safe_strerror(errno), VTY_NEWLINE); return CMD_WARNING; } #if 0 /* Redistribute this information. */ zebra_interface_address_delete_update (ifp, ifc); /* Remove connected route. */ connected_down_ipv4 (ifp, ifc); /* Free address information. */ listnode_delete (ifp->connected, ifc); connected_free (ifc); #endif return CMD_SUCCESS; } DEFUN (ip_address, ip_address_cmd, "ip address A.B.C.D/M", "Interface Internet Protocol config commands\n" "Set the IP address of an interface\n" "IP address (e.g. 10.0.0.1/8)\n") { return ip_address_install (vty, vty->index, argv[0], NULL, NULL); } DEFUN (no_ip_address, no_ip_address_cmd, "no ip address A.B.C.D/M", NO_STR "Interface Internet Protocol config commands\n" "Set the IP address of an interface\n" "IP Address (e.g. 10.0.0.1/8)") { return ip_address_uninstall (vty, vty->index, argv[0], NULL, NULL); } #ifdef HAVE_NETLINK DEFUN (ip_address_label, ip_address_label_cmd, "ip address A.B.C.D/M label LINE", "Interface Internet Protocol config commands\n" "Set the IP address of an interface\n" "IP address (e.g. 10.0.0.1/8)\n" "Label of this address\n" "Label\n") { return ip_address_install (vty, vty->index, argv[0], NULL, argv[1]); } DEFUN (no_ip_address_label, no_ip_address_label_cmd, "no ip address A.B.C.D/M label LINE", NO_STR "Interface Internet Protocol config commands\n" "Set the IP address of an interface\n" "IP address (e.g. 10.0.0.1/8)\n" "Label of this address\n" "Label\n") { return ip_address_uninstall (vty, vty->index, argv[0], NULL, argv[1]); } #endif /* HAVE_NETLINK */ #ifdef HAVE_IPV6 int ipv6_address_install (struct vty *vty, struct interface *ifp, const char *addr_str, const char *peer_str, const char *label, int secondary) { struct prefix_ipv6 cp; struct connected *ifc; struct prefix_ipv6 *p; int ret; ret = str2prefix_ipv6 (addr_str, &cp); if (ret <= 0) { vty_out (vty, "%% Malformed address %s", VTY_NEWLINE); return CMD_WARNING; } ifc = connected_check_ipv6 (ifp, (struct prefix *) &cp); if (! ifc) { ifc = connected_new (); ifc->ifp = ifp; /* Address. */ p = prefix_ipv6_new (); *p = cp; ifc->address = (struct prefix *) p; /* Secondary. */ if (secondary) SET_FLAG (ifc->flags, ZEBRA_IFA_SECONDARY); /* Label. */ if (label) ifc->label = strdup (label); /* Add to linked list. */ listnode_add (ifp->connected, ifc); } /* This address is configured from zebra. */ if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED)) SET_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED); /* In case of this route need to install kernel. */ if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL) && CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE)) { /* Some system need to up the interface to set IP address. */ if (! if_is_up (ifp)) { if_set_flags (ifp, IFF_UP | IFF_RUNNING); if_refresh (ifp); } ret = if_prefix_add_ipv6 (ifp, ifc); if (ret < 0) { vty_out (vty, "%% Can't set interface IP address: %s.%s", safe_strerror(errno), VTY_NEWLINE); return CMD_WARNING; } /* IP address propery set. */ SET_FLAG (ifc->conf, ZEBRA_IFC_REAL); /* Update interface address information to protocol daemon. */ zebra_interface_address_add_update (ifp, ifc); /* If interface is up register connected route. */ if (if_is_operative(ifp)) connected_up_ipv6 (ifp, ifc); } return CMD_SUCCESS; } int ipv6_address_uninstall (struct vty *vty, struct interface *ifp, const char *addr_str, const char *peer_str, const char *label, int secondry) { struct prefix_ipv6 cp; struct connected *ifc; int ret; /* Convert to prefix structure. */ ret = str2prefix_ipv6 (addr_str, &cp); if (ret <= 0) { vty_out (vty, "%% Malformed address %s", VTY_NEWLINE); return CMD_WARNING; } /* Check current interface address. */ ifc = connected_check_ipv6 (ifp, (struct prefix *) &cp); if (! ifc) { vty_out (vty, "%% Can't find address%s", VTY_NEWLINE); return CMD_WARNING; } /* This is not configured address. */ if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED)) return CMD_WARNING; /* This is not real address or interface is not active. */ if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL) || ! CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE)) { listnode_delete (ifp->connected, ifc); connected_free (ifc); return CMD_WARNING; } /* This is real route. */ ret = if_prefix_delete_ipv6 (ifp, ifc); if (ret < 0) { vty_out (vty, "%% Can't unset interface IP address: %s.%s", safe_strerror(errno), VTY_NEWLINE); return CMD_WARNING; } /* Redistribute this information. */ zebra_interface_address_delete_update (ifp, ifc); /* Remove connected route. */ connected_down_ipv6 (ifp, ifc); /* Free address information. */ listnode_delete (ifp->connected, ifc); connected_free (ifc); return CMD_SUCCESS; } DEFUN (ipv6_address, ipv6_address_cmd, "ipv6 address X:X::X:X/M", "Interface IPv6 config commands\n" "Set the IP address of an interface\n" "IPv6 address (e.g. 3ffe:506::1/48)\n") { return ipv6_address_install (vty, vty->index, argv[0], NULL, NULL, 0); } DEFUN (no_ipv6_address, no_ipv6_address_cmd, "no ipv6 address X:X::X:X/M", NO_STR "Interface IPv6 config commands\n" "Set the IP address of an interface\n" "IPv6 address (e.g. 3ffe:506::1/48)\n") { return ipv6_address_uninstall (vty, vty->index, argv[0], NULL, NULL, 0); } #endif /* HAVE_IPV6 */ int if_config_write (struct vty *vty) { struct listnode *node; struct interface *ifp; char buf[BUFSIZ]; for (node = listhead (iflist); node; nextnode (node)) { struct zebra_if *if_data; struct listnode *addrnode; struct connected *ifc; struct prefix *p; ifp = getdata (node); if_data = ifp->info; vty_out (vty, "interface %s%s", ifp->name, VTY_NEWLINE); if (ifp->desc) vty_out (vty, " description %s%s", ifp->desc, VTY_NEWLINE); /* Assign bandwidth here to avoid unnecessary interface flap while processing config script */ if (ifp->bandwidth != 0) vty_out(vty, " bandwidth %u%s", ifp->bandwidth, VTY_NEWLINE); if (CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_LINKDETECTION)) vty_out(vty, " link-detect%s", VTY_NEWLINE); for (addrnode = listhead (ifp->connected); addrnode; nextnode (addrnode)) { ifc = getdata (addrnode); if (CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED)) { p = ifc->address; vty_out (vty, " ip%s address %s/%d", p->family == AF_INET ? "" : "v6", inet_ntop (p->family, &p->u.prefix, buf, BUFSIZ), p->prefixlen); if (ifc->label) vty_out (vty, " label %s", ifc->label); vty_out (vty, "%s", VTY_NEWLINE); } } if (if_data) { if (if_data->shutdown == IF_ZEBRA_SHUTDOWN_ON) vty_out (vty, " shutdown%s", VTY_NEWLINE); if (if_data->multicast != IF_ZEBRA_MULTICAST_UNSPEC) vty_out (vty, " %smulticast%s", if_data->multicast == IF_ZEBRA_MULTICAST_ON ? "" : "no ", VTY_NEWLINE); } #ifdef RTADV rtadv_config_write (vty, ifp); #endif /* RTADV */ #ifdef HAVE_IRDP irdp_config_write (vty, ifp); #endif /* IRDP */ vty_out (vty, "!%s", VTY_NEWLINE); } return 0; } /* Allocate and initialize interface vector. */ void zebra_if_init () { /* Initialize interface and new hook. */ if_init (); if_add_hook (IF_NEW_HOOK, if_zebra_new_hook); if_add_hook (IF_DELETE_HOOK, if_zebra_delete_hook); /* Install configuration write function. */ install_node (&interface_node, if_config_write); install_element (VIEW_NODE, &show_interface_cmd); install_element (ENABLE_NODE, &show_interface_cmd); install_element (ENABLE_NODE, &show_interface_desc_cmd); install_element (CONFIG_NODE, &zebra_interface_cmd); install_element (CONFIG_NODE, &no_interface_cmd); install_default (INTERFACE_NODE); install_element (INTERFACE_NODE, &interface_desc_cmd); install_element (INTERFACE_NODE, &no_interface_desc_cmd); install_element (INTERFACE_NODE, &multicast_cmd); install_element (INTERFACE_NODE, &no_multicast_cmd); install_element (INTERFACE_NODE, &linkdetect_cmd); install_element (INTERFACE_NODE, &no_linkdetect_cmd); install_element (INTERFACE_NODE, &shutdown_if_cmd); install_element (INTERFACE_NODE, &no_shutdown_if_cmd); install_element (INTERFACE_NODE, &bandwidth_if_cmd); install_element (INTERFACE_NODE, &no_bandwidth_if_cmd); install_element (INTERFACE_NODE, &no_bandwidth_if_val_cmd); install_element (INTERFACE_NODE, &ip_address_cmd); install_element (INTERFACE_NODE, &no_ip_address_cmd); #ifdef HAVE_IPV6 install_element (INTERFACE_NODE, &ipv6_address_cmd); install_element (INTERFACE_NODE, &no_ipv6_address_cmd); #endif /* HAVE_IPV6 */ #ifdef HAVE_NETLINK install_element (INTERFACE_NODE, &ip_address_label_cmd); install_element (INTERFACE_NODE, &no_ip_address_label_cmd); #endif /* HAVE_NETLINK */ }