mirror of
https://gitlab.nic.cz/labs/bird.git
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5c73cd94a5
Useful if one have too many interfaces, as there are per-route iface index lookups in routing table scan.
923 lines
20 KiB
C
923 lines
20 KiB
C
/*
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* BIRD -- Management of Interfaces and Neighbor Cache
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*
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* (c) 1998--2000 Martin Mares <mj@ucw.cz>
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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/**
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* DOC: Interfaces
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*
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* The interface module keeps track of all network interfaces in the
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* system and their addresses.
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*
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* Each interface is represented by an &iface structure which carries
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* interface capability flags (%IF_MULTIACCESS, %IF_BROADCAST etc.),
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* MTU, interface name and index and finally a linked list of network
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* prefixes assigned to the interface, each one represented by
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* struct &ifa.
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*
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* The interface module keeps a `soft-up' state for each &iface which
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* is a conjunction of link being up, the interface being of a `sane'
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* type and at least one IP address assigned to it.
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*/
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#undef LOCAL_DEBUG
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#include "nest/bird.h"
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#include "nest/iface.h"
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#include "nest/protocol.h"
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#include "nest/cli.h"
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#include "lib/hash.h"
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#include "lib/resource.h"
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#include "lib/string.h"
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#include "conf/conf.h"
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#include "sysdep/unix/krt.h"
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static pool *if_pool;
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list iface_list;
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#define IFH_KEY(n) n->index
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#define IFH_NEXT(n) n->next
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#define IFH_EQ(a,b) a == b
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#define IFH_FN(k) u32_hash(k)
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#define IFH_ORDER 6
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#define IFH_REHASH if_rehash
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#define IFH_PARAMS /8, *1, 2, 2, 6, 20
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HASH_DEFINE_REHASH_FN(IFH, struct iface)
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static HASH(struct iface) iface_hash;
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static void if_recalc_preferred(struct iface *i);
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/**
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* ifa_dump - dump interface address
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* @a: interface address descriptor
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*
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* This function dumps contents of an &ifa to the debug output.
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*/
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void
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ifa_dump(struct ifa *a)
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{
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debug("\t%I, net %N bc %I -> %I%s%s%s%s\n", a->ip, &a->prefix, a->brd, a->opposite,
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(a->flags & IA_PRIMARY) ? " PRIMARY" : "",
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(a->flags & IA_SECONDARY) ? " SEC" : "",
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(a->flags & IA_HOST) ? " HOST" : "",
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(a->flags & IA_PEER) ? " PEER" : "");
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}
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/**
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* if_dump - dump interface
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* @i: interface to dump
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*
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* This function dumps all information associated with a given
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* network interface to the debug output.
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*/
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void
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if_dump(struct iface *i)
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{
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struct ifa *a;
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debug("IF%d: %s", i->index, i->name);
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if (i->flags & IF_SHUTDOWN)
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debug(" SHUTDOWN");
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if (i->flags & IF_UP)
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debug(" UP");
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else
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debug(" DOWN");
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if (i->flags & IF_ADMIN_UP)
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debug(" LINK-UP");
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if (i->flags & IF_MULTIACCESS)
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debug(" MA");
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if (i->flags & IF_BROADCAST)
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debug(" BC");
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if (i->flags & IF_MULTICAST)
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debug(" MC");
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if (i->flags & IF_LOOPBACK)
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debug(" LOOP");
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if (i->flags & IF_IGNORE)
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debug(" IGN");
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if (i->flags & IF_TMP_DOWN)
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debug(" TDOWN");
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debug(" MTU=%d\n", i->mtu);
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WALK_LIST(a, i->addrs)
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{
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ifa_dump(a);
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ASSERT(!!(a->flags & IA_PRIMARY) ==
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((a == i->addr4) || (a == i->addr6) || (a == i->llv6)));
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}
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}
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/**
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* if_dump_all - dump all interfaces
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*
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* This function dumps information about all known network
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* interfaces to the debug output.
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*/
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void
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if_dump_all(void)
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{
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struct iface *i;
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debug("Known network interfaces:\n");
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WALK_LIST(i, iface_list)
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if_dump(i);
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debug("Router ID: %08x\n", config->router_id);
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}
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static inline unsigned
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if_what_changed(struct iface *i, struct iface *j)
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{
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unsigned c;
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if (((i->flags ^ j->flags) & ~(IF_UP | IF_SHUTDOWN | IF_UPDATED | IF_ADMIN_UP | IF_LINK_UP | IF_TMP_DOWN | IF_JUST_CREATED))
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|| (i->index != j->index) || (i->master != j->master))
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return IF_CHANGE_TOO_MUCH;
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c = 0;
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if ((i->flags ^ j->flags) & IF_UP)
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c |= (i->flags & IF_UP) ? IF_CHANGE_DOWN : IF_CHANGE_UP;
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if ((i->flags ^ j->flags) & IF_LINK_UP)
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c |= IF_CHANGE_LINK;
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if (i->mtu != j->mtu)
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c |= IF_CHANGE_MTU;
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return c;
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}
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static inline void
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if_copy(struct iface *to, struct iface *from)
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{
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to->flags = from->flags | (to->flags & IF_TMP_DOWN);
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to->mtu = from->mtu;
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to->master_index = from->master_index;
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to->master = from->master;
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}
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static inline void
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ifa_send_notify(struct proto *p, unsigned c, struct ifa *a)
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{
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if (p->ifa_notify &&
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(p->proto_state != PS_DOWN) &&
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(!p->vrf || p->vrf == a->iface->master))
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{
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if (p->debug & D_IFACES)
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log(L_TRACE "%s < address %N on interface %s %s",
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p->name, &a->prefix, a->iface->name,
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(c & IF_CHANGE_UP) ? "added" : "removed");
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p->ifa_notify(p, c, a);
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}
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}
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static void
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ifa_notify_change_(unsigned c, struct ifa *a)
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{
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struct proto *p;
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DBG("IFA change notification (%x) for %s:%I\n", c, a->iface->name, a->ip);
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WALK_LIST(p, proto_list)
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ifa_send_notify(p, c, a);
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}
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static inline void
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ifa_notify_change(unsigned c, struct ifa *a)
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{
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if (c & IF_CHANGE_DOWN)
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neigh_ifa_update(a);
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ifa_notify_change_(c, a);
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if (c & IF_CHANGE_UP)
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neigh_ifa_update(a);
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}
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static inline void
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if_send_notify(struct proto *p, unsigned c, struct iface *i)
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{
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if (p->if_notify &&
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(p->proto_state != PS_DOWN) &&
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(!p->vrf || p->vrf == i->master))
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{
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if (p->debug & D_IFACES)
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log(L_TRACE "%s < interface %s %s", p->name, i->name,
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(c & IF_CHANGE_UP) ? "goes up" :
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(c & IF_CHANGE_DOWN) ? "goes down" :
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(c & IF_CHANGE_MTU) ? "changes MTU" :
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(c & IF_CHANGE_LINK) ? "changes link" :
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(c & IF_CHANGE_PREFERRED) ? "changes preferred address" :
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(c & IF_CHANGE_CREATE) ? "created" :
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"sends unknown event");
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p->if_notify(p, c, i);
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}
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}
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static void
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if_notify_change(unsigned c, struct iface *i)
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{
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struct proto *p;
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struct ifa *a;
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if (i->flags & IF_JUST_CREATED)
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{
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i->flags &= ~IF_JUST_CREATED;
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c |= IF_CHANGE_CREATE | IF_CHANGE_MTU;
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}
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DBG("Interface change notification (%x) for %s\n", c, i->name);
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#ifdef LOCAL_DEBUG
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if_dump(i);
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#endif
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if (c & IF_CHANGE_DOWN)
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neigh_if_down(i);
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if (c & IF_CHANGE_DOWN)
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WALK_LIST(a, i->addrs)
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ifa_notify_change_(IF_CHANGE_DOWN, a);
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WALK_LIST(p, proto_list)
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if_send_notify(p, c, i);
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if (c & IF_CHANGE_UP)
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WALK_LIST(a, i->addrs)
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ifa_notify_change_(IF_CHANGE_UP, a);
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if (c & IF_CHANGE_UP)
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neigh_if_up(i);
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if ((c & (IF_CHANGE_UP | IF_CHANGE_DOWN | IF_CHANGE_LINK)) == IF_CHANGE_LINK)
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neigh_if_link(i);
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}
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static uint
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if_recalc_flags(struct iface *i UNUSED, uint flags)
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{
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if ((flags & IF_ADMIN_UP) &&
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!(flags & (IF_SHUTDOWN | IF_TMP_DOWN)) &&
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!(i->master_index && !i->master))
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flags |= IF_UP;
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else
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flags &= ~IF_UP;
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return flags;
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}
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static void
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if_change_flags(struct iface *i, uint flags)
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{
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uint of = i->flags;
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i->flags = if_recalc_flags(i, flags);
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if ((i->flags ^ of) & IF_UP)
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if_notify_change((i->flags & IF_UP) ? IF_CHANGE_UP : IF_CHANGE_DOWN, i);
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}
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/**
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* if_delete - remove interface
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* @old: interface
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*
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* This function is called by the low-level platform dependent code
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* whenever it notices an interface disappears. It is just a shorthand
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* for if_update().
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*/
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void
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if_delete(struct iface *old)
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{
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struct iface f = {};
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strncpy(f.name, old->name, sizeof(f.name)-1);
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f.flags = IF_SHUTDOWN;
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if_update(&f);
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}
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/**
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* if_update - update interface status
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* @new: new interface status
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*
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* if_update() is called by the low-level platform dependent code
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* whenever it notices an interface change.
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*
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* There exist two types of interface updates -- synchronous and asynchronous
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* ones. In the synchronous case, the low-level code calls if_start_update(),
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* scans all interfaces reported by the OS, uses if_update() and ifa_update()
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* to pass them to the core and then it finishes the update sequence by
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* calling if_end_update(). When working asynchronously, the sysdep code
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* calls if_update() and ifa_update() whenever it notices a change.
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*
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* if_update() will automatically notify all other modules about the change.
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*/
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struct iface *
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if_update(struct iface *new)
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{
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struct iface *i;
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unsigned c;
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WALK_LIST(i, iface_list)
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if (!strcmp(new->name, i->name))
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{
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new->flags = if_recalc_flags(new, new->flags);
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c = if_what_changed(i, new);
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if (c & IF_CHANGE_TOO_MUCH) /* Changed a lot, convert it to down/up */
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{
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DBG("Interface %s changed too much -- forcing down/up transition\n", i->name);
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if_change_flags(i, i->flags | IF_TMP_DOWN);
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rem_node(&i->n);
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HASH_REMOVE2(iface_hash, IFH, if_pool, i);
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new->addr4 = i->addr4;
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new->addr6 = i->addr6;
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new->llv6 = i->llv6;
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new->sysdep = i->sysdep;
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memcpy(&new->addrs, &i->addrs, sizeof(i->addrs));
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memcpy(i, new, sizeof(*i));
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i->flags &= ~IF_UP; /* IF_TMP_DOWN will be added later */
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goto newif;
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}
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if_copy(i, new);
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if (c)
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if_notify_change(c, i);
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i->flags |= IF_UPDATED;
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return i;
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}
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i = mb_alloc(if_pool, sizeof(struct iface));
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memcpy(i, new, sizeof(*i));
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init_list(&i->addrs);
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newif:
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init_list(&i->neighbors);
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i->flags |= IF_UPDATED | IF_TMP_DOWN; /* Tmp down as we don't have addresses yet */
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add_tail(&iface_list, &i->n);
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HASH_INSERT2(iface_hash, IFH, if_pool, i);
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return i;
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}
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void
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if_start_update(void)
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{
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struct iface *i;
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struct ifa *a;
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WALK_LIST(i, iface_list)
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{
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i->flags &= ~IF_UPDATED;
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WALK_LIST(a, i->addrs)
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a->flags &= ~IA_UPDATED;
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}
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}
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void
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if_end_partial_update(struct iface *i)
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{
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if (i->flags & IF_NEEDS_RECALC)
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if_recalc_preferred(i);
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if (i->flags & IF_TMP_DOWN)
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if_change_flags(i, i->flags & ~IF_TMP_DOWN);
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}
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void
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if_end_update(void)
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{
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struct iface *i;
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struct ifa *a, *b;
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WALK_LIST(i, iface_list)
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{
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if (!(i->flags & IF_UPDATED))
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if_change_flags(i, (i->flags & ~IF_ADMIN_UP) | IF_SHUTDOWN);
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else
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{
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WALK_LIST_DELSAFE(a, b, i->addrs)
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if (!(a->flags & IA_UPDATED))
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ifa_delete(a);
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if_end_partial_update(i);
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}
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}
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}
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void
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if_flush_ifaces(struct proto *p)
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{
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if (p->debug & D_EVENTS)
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log(L_TRACE "%s: Flushing interfaces", p->name);
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if_start_update();
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if_end_update();
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}
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/**
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* if_feed_baby - advertise interfaces to a new protocol
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* @p: protocol to feed
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*
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* When a new protocol starts, this function sends it a series
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* of notifications about all existing interfaces.
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*/
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void
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if_feed_baby(struct proto *p)
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{
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struct iface *i;
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struct ifa *a;
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if (!p->if_notify && !p->ifa_notify) /* shortcut */
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return;
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DBG("Announcing interfaces to new protocol %s\n", p->name);
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WALK_LIST(i, iface_list)
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{
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if_send_notify(p, IF_CHANGE_CREATE | ((i->flags & IF_UP) ? IF_CHANGE_UP : 0), i);
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if (i->flags & IF_UP)
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WALK_LIST(a, i->addrs)
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ifa_send_notify(p, IF_CHANGE_CREATE | IF_CHANGE_UP, a);
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}
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}
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/**
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* if_find_by_index - find interface by ifindex
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* @idx: ifindex
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*
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* This function finds an &iface structure corresponding to an interface
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* of the given index @idx. Returns a pointer to the structure or %NULL
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* if no such structure exists.
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*/
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struct iface *
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if_find_by_index(unsigned idx)
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{
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struct iface *i = HASH_FIND(iface_hash, IFH, idx);
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return (i && !(i->flags & IF_SHUTDOWN)) ? i : NULL;
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}
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/**
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* if_find_by_name - find interface by name
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* @name: interface name
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*
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* This function finds an &iface structure corresponding to an interface
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* of the given name @name. Returns a pointer to the structure or %NULL
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* if no such structure exists.
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*/
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struct iface *
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if_find_by_name(char *name)
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{
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struct iface *i;
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WALK_LIST(i, iface_list)
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if (!strcmp(i->name, name))
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return i;
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return NULL;
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}
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struct iface *
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if_get_by_name(char *name)
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{
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struct iface *i;
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if (i = if_find_by_name(name))
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return i;
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/* No active iface, create a dummy */
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i = mb_allocz(if_pool, sizeof(struct iface));
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strncpy(i->name, name, sizeof(i->name)-1);
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i->flags = IF_SHUTDOWN;
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init_list(&i->addrs);
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init_list(&i->neighbors);
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add_tail(&iface_list, &i->n);
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/* No need to insert dummy nodes to iface_hash */
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return i;
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}
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|
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static inline void
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if_set_preferred(struct ifa **pos, struct ifa *new)
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{
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if (*pos)
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(*pos)->flags &= ~IA_PRIMARY;
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if (new)
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new->flags |= IA_PRIMARY;
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*pos = new;
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}
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|
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static void
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if_recalc_preferred(struct iface *i)
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{
|
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/*
|
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* Preferred address selection priority:
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* 1) Address configured in Device protocol
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* 2) Sysdep IPv4 address (BSD)
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* 3) Old preferred address
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* 4) First address in list
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*/
|
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|
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struct kif_iface_config *ic = kif_get_iface_config(i);
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struct ifa *a4 = i->addr4, *a6 = i->addr6, *ll = i->llv6;
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ip_addr pref_v4 = ic->pref_v4;
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uint change = 0;
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|
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if (kif_update_sysdep_addr(i))
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change |= IF_CHANGE_SYSDEP;
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|
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/* BSD sysdep address */
|
|
if (ipa_zero(pref_v4) && ip4_nonzero(i->sysdep))
|
|
pref_v4 = ipa_from_ip4(i->sysdep);
|
|
|
|
struct ifa *a;
|
|
WALK_LIST(a, i->addrs)
|
|
{
|
|
/* Secondary address is never selected */
|
|
if (a->flags & IA_SECONDARY)
|
|
continue;
|
|
|
|
if (ipa_is_ip4(a->ip)) {
|
|
if (!a4 || ipa_equal(a->ip, pref_v4))
|
|
a4 = a;
|
|
} else if (!ipa_is_link_local(a->ip)) {
|
|
if (!a6 || ipa_equal(a->ip, ic->pref_v6))
|
|
a6 = a;
|
|
} else {
|
|
if (!ll || ipa_equal(a->ip, ic->pref_ll))
|
|
ll = a;
|
|
}
|
|
}
|
|
|
|
if (a4 != i->addr4)
|
|
{
|
|
if_set_preferred(&i->addr4, a4);
|
|
change |= IF_CHANGE_ADDR4;
|
|
}
|
|
|
|
if (a6 != i->addr6)
|
|
{
|
|
if_set_preferred(&i->addr6, a6);
|
|
change |= IF_CHANGE_ADDR6;
|
|
}
|
|
|
|
if (ll != i->llv6)
|
|
{
|
|
if_set_preferred(&i->llv6, ll);
|
|
change |= IF_CHANGE_LLV6;
|
|
}
|
|
|
|
i->flags &= ~IF_NEEDS_RECALC;
|
|
|
|
/*
|
|
* FIXME: There should be proper notification instead of iface restart:
|
|
* if_notify_change(change, i)
|
|
*/
|
|
if (change)
|
|
if_change_flags(i, i->flags | IF_TMP_DOWN);
|
|
}
|
|
|
|
void
|
|
if_recalc_all_preferred_addresses(void)
|
|
{
|
|
struct iface *i;
|
|
|
|
WALK_LIST(i, iface_list)
|
|
{
|
|
if_recalc_preferred(i);
|
|
|
|
if (i->flags & IF_TMP_DOWN)
|
|
if_change_flags(i, i->flags & ~IF_TMP_DOWN);
|
|
}
|
|
}
|
|
|
|
static inline int
|
|
ifa_same(struct ifa *a, struct ifa *b)
|
|
{
|
|
return ipa_equal(a->ip, b->ip) && net_equal(&a->prefix, &b->prefix);
|
|
}
|
|
|
|
|
|
/**
|
|
* ifa_update - update interface address
|
|
* @a: new interface address
|
|
*
|
|
* This function adds address information to a network
|
|
* interface. It's called by the platform dependent code during
|
|
* the interface update process described under if_update().
|
|
*/
|
|
struct ifa *
|
|
ifa_update(struct ifa *a)
|
|
{
|
|
struct iface *i = a->iface;
|
|
struct ifa *b;
|
|
|
|
WALK_LIST(b, i->addrs)
|
|
if (ifa_same(b, a))
|
|
{
|
|
if (ipa_equal(b->brd, a->brd) &&
|
|
ipa_equal(b->opposite, a->opposite) &&
|
|
b->scope == a->scope &&
|
|
!((b->flags ^ a->flags) & IA_PEER))
|
|
{
|
|
b->flags |= IA_UPDATED;
|
|
return b;
|
|
}
|
|
ifa_delete(b);
|
|
break;
|
|
}
|
|
|
|
if ((a->prefix.type == NET_IP4) && (i->flags & IF_BROADCAST) && ipa_zero(a->brd))
|
|
log(L_WARN "Missing broadcast address for interface %s", i->name);
|
|
|
|
b = mb_alloc(if_pool, sizeof(struct ifa));
|
|
memcpy(b, a, sizeof(struct ifa));
|
|
add_tail(&i->addrs, &b->n);
|
|
b->flags |= IA_UPDATED;
|
|
|
|
i->flags |= IF_NEEDS_RECALC;
|
|
if (i->flags & IF_UP)
|
|
ifa_notify_change(IF_CHANGE_CREATE | IF_CHANGE_UP, b);
|
|
return b;
|
|
}
|
|
|
|
/**
|
|
* ifa_delete - remove interface address
|
|
* @a: interface address
|
|
*
|
|
* This function removes address information from a network
|
|
* interface. It's called by the platform dependent code during
|
|
* the interface update process described under if_update().
|
|
*/
|
|
void
|
|
ifa_delete(struct ifa *a)
|
|
{
|
|
struct iface *i = a->iface;
|
|
struct ifa *b;
|
|
|
|
WALK_LIST(b, i->addrs)
|
|
if (ifa_same(b, a))
|
|
{
|
|
rem_node(&b->n);
|
|
HASH_REMOVE2(iface_hash, IFH, if_pool, i);
|
|
|
|
if (b->flags & IA_PRIMARY)
|
|
{
|
|
/*
|
|
* We unlink deleted preferred address and mark for recalculation.
|
|
* FIXME: This could break if we make iface scan non-atomic, as
|
|
* protocols still could use the freed address until they get
|
|
* if_notify from preferred route recalculation.
|
|
*/
|
|
if (b == i->addr4) i->addr4 = NULL;
|
|
if (b == i->addr6) i->addr6 = NULL;
|
|
if (b == i->llv6) i->llv6 = NULL;
|
|
i->flags |= IF_NEEDS_RECALC;
|
|
}
|
|
|
|
if (i->flags & IF_UP)
|
|
ifa_notify_change(IF_CHANGE_DOWN, b);
|
|
|
|
mb_free(b);
|
|
return;
|
|
}
|
|
}
|
|
|
|
u32
|
|
if_choose_router_id(struct iface_patt *mask, u32 old_id)
|
|
{
|
|
struct iface *i;
|
|
struct ifa *a, *b;
|
|
|
|
b = NULL;
|
|
WALK_LIST(i, iface_list)
|
|
{
|
|
if (!(i->flags & IF_ADMIN_UP) ||
|
|
(i->flags & IF_SHUTDOWN))
|
|
continue;
|
|
|
|
WALK_LIST(a, i->addrs)
|
|
{
|
|
if (a->prefix.type != NET_IP4)
|
|
continue;
|
|
|
|
if (a->flags & IA_SECONDARY)
|
|
continue;
|
|
|
|
if (a->scope <= SCOPE_LINK)
|
|
continue;
|
|
|
|
/* Check pattern if specified */
|
|
if (mask && !iface_patt_match(mask, i, a))
|
|
continue;
|
|
|
|
/* No pattern or pattern matched */
|
|
if (!b || ipa_to_u32(a->ip) < ipa_to_u32(b->ip))
|
|
b = a;
|
|
}
|
|
}
|
|
|
|
if (!b)
|
|
return 0;
|
|
|
|
u32 id = ipa_to_u32(b->ip);
|
|
if (id != old_id)
|
|
log(L_INFO "Chosen router ID %R according to interface %s", id, b->iface->name);
|
|
|
|
return id;
|
|
}
|
|
|
|
/**
|
|
* if_init - initialize interface module
|
|
*
|
|
* This function is called during BIRD startup to initialize
|
|
* all data structures of the interface module.
|
|
*/
|
|
void
|
|
if_init(void)
|
|
{
|
|
if_pool = rp_new(&root_pool, "Interfaces");
|
|
|
|
init_list(&iface_list);
|
|
HASH_INIT(iface_hash, if_pool, IFH_ORDER);
|
|
|
|
neigh_init(if_pool);
|
|
}
|
|
|
|
/*
|
|
* Interface Pattern Lists
|
|
*/
|
|
|
|
int
|
|
iface_patt_match(struct iface_patt *ifp, struct iface *i, struct ifa *a)
|
|
{
|
|
struct iface_patt_node *p;
|
|
|
|
WALK_LIST(p, ifp->ipn_list)
|
|
{
|
|
char *t = p->pattern;
|
|
int pos = p->positive;
|
|
|
|
if (t)
|
|
{
|
|
if (*t == '-')
|
|
{
|
|
t++;
|
|
pos = !pos;
|
|
}
|
|
|
|
if (!patmatch(t, i->name))
|
|
continue;
|
|
}
|
|
|
|
if (p->prefix.pxlen == 0)
|
|
return pos;
|
|
|
|
if (!a)
|
|
continue;
|
|
|
|
if (ipa_in_netX(a->ip, &p->prefix))
|
|
return pos;
|
|
|
|
if ((a->flags & IA_PEER) &&
|
|
ipa_in_netX(a->opposite, &p->prefix))
|
|
return pos;
|
|
|
|
continue;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
struct iface_patt *
|
|
iface_patt_find(list *l, struct iface *i, struct ifa *a)
|
|
{
|
|
struct iface_patt *p;
|
|
|
|
WALK_LIST(p, *l)
|
|
if (iface_patt_match(p, i, a))
|
|
return p;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int
|
|
iface_plists_equal(struct iface_patt *pa, struct iface_patt *pb)
|
|
{
|
|
struct iface_patt_node *x, *y;
|
|
|
|
x = HEAD(pa->ipn_list);
|
|
y = HEAD(pb->ipn_list);
|
|
while (x->n.next && y->n.next)
|
|
{
|
|
if ((x->positive != y->positive) ||
|
|
(!x->pattern && y->pattern) || /* This nasty lines where written by me... :-( Feela */
|
|
(!y->pattern && x->pattern) ||
|
|
((x->pattern != y->pattern) && strcmp(x->pattern, y->pattern)) ||
|
|
!net_equal(&x->prefix, &y->prefix))
|
|
return 0;
|
|
x = (void *) x->n.next;
|
|
y = (void *) y->n.next;
|
|
}
|
|
return (!x->n.next && !y->n.next);
|
|
}
|
|
|
|
int
|
|
iface_patts_equal(list *a, list *b, int (*comp)(struct iface_patt *, struct iface_patt *))
|
|
{
|
|
struct iface_patt *x, *y;
|
|
|
|
x = HEAD(*a);
|
|
y = HEAD(*b);
|
|
while (x->n.next && y->n.next)
|
|
{
|
|
if (!iface_plists_equal(x, y) ||
|
|
(comp && !comp(x, y)))
|
|
return 0;
|
|
x = (void *) x->n.next;
|
|
y = (void *) y->n.next;
|
|
}
|
|
return (!x->n.next && !y->n.next);
|
|
}
|
|
|
|
/*
|
|
* CLI commands.
|
|
*/
|
|
|
|
static void
|
|
if_show_addr(struct ifa *a)
|
|
{
|
|
byte *flg, opp[IPA_MAX_TEXT_LENGTH + 16];
|
|
|
|
flg = (a->flags & IA_PRIMARY) ? "Preferred, " : (a->flags & IA_SECONDARY) ? "Secondary, " : "";
|
|
|
|
if (ipa_nonzero(a->opposite))
|
|
bsprintf(opp, "opposite %I, ", a->opposite);
|
|
else
|
|
opp[0] = 0;
|
|
|
|
cli_msg(-1003, "\t%I/%d (%s%sscope %s)",
|
|
a->ip, a->prefix.pxlen, flg, opp, ip_scope_text(a->scope));
|
|
}
|
|
|
|
void
|
|
if_show(void)
|
|
{
|
|
struct iface *i;
|
|
struct ifa *a;
|
|
char *type;
|
|
|
|
WALK_LIST(i, iface_list)
|
|
{
|
|
if (i->flags & IF_SHUTDOWN)
|
|
continue;
|
|
|
|
char mbuf[16 + sizeof(i->name)] = {};
|
|
if (i->master)
|
|
bsprintf(mbuf, " master=%s", i->master->name);
|
|
else if (i->master_index)
|
|
bsprintf(mbuf, " master=#%u", i->master_index);
|
|
|
|
cli_msg(-1001, "%s %s (index=%d%s)", i->name, (i->flags & IF_UP) ? "up" : "down", i->index, mbuf);
|
|
if (!(i->flags & IF_MULTIACCESS))
|
|
type = "PtP";
|
|
else
|
|
type = "MultiAccess";
|
|
cli_msg(-1004, "\t%s%s%s Admin%s Link%s%s%s MTU=%d",
|
|
type,
|
|
(i->flags & IF_BROADCAST) ? " Broadcast" : "",
|
|
(i->flags & IF_MULTICAST) ? " Multicast" : "",
|
|
(i->flags & IF_ADMIN_UP) ? "Up" : "Down",
|
|
(i->flags & IF_LINK_UP) ? "Up" : "Down",
|
|
(i->flags & IF_LOOPBACK) ? " Loopback" : "",
|
|
(i->flags & IF_IGNORE) ? " Ignored" : "",
|
|
i->mtu);
|
|
|
|
WALK_LIST(a, i->addrs)
|
|
if (a->prefix.type == NET_IP4)
|
|
if_show_addr(a);
|
|
|
|
WALK_LIST(a, i->addrs)
|
|
if (a->prefix.type == NET_IP6)
|
|
if_show_addr(a);
|
|
}
|
|
cli_msg(0, "");
|
|
}
|
|
|
|
void
|
|
if_show_summary(void)
|
|
{
|
|
struct iface *i;
|
|
|
|
cli_msg(-2005, "%-10s %-6s %-18s %s", "Interface", "State", "IPv4 address", "IPv6 address");
|
|
WALK_LIST(i, iface_list)
|
|
{
|
|
byte a4[IPA_MAX_TEXT_LENGTH + 17];
|
|
byte a6[IPA_MAX_TEXT_LENGTH + 17];
|
|
|
|
if (i->addr4)
|
|
bsprintf(a4, "%I/%d", i->addr4->ip, i->addr4->prefix.pxlen);
|
|
else
|
|
a4[0] = 0;
|
|
|
|
if (i->addr6)
|
|
bsprintf(a6, "%I/%d", i->addr6->ip, i->addr6->prefix.pxlen);
|
|
else
|
|
a6[0] = 0;
|
|
|
|
cli_msg(-1005, "%-10s %-6s %-18s %s",
|
|
i->name, (i->flags & IF_UP) ? "up" : "down", a4, a6);
|
|
}
|
|
cli_msg(0, "");
|
|
}
|