示例#1
0
/* Note: on netlink systems, there should be a 1-to-1 mapping between interface
   names and ifindex values. */
static void set_ifindex(struct interface *ifp, ifindex_t ifi_index,
			struct zebra_ns *zns)
{
	struct interface *oifp;

	if (((oifp = if_lookup_by_index_per_ns(zns, ifi_index)) != NULL)
	    && (oifp != ifp)) {
		if (ifi_index == IFINDEX_INTERNAL)
			flog_err(
				LIB_ERR_INTERFACE,
				"Netlink is setting interface %s ifindex to reserved internal value %u",
				ifp->name, ifi_index);
		else {
			if (IS_ZEBRA_DEBUG_KERNEL)
				zlog_debug(
					"interface index %d was renamed from %s to %s",
					ifi_index, oifp->name, ifp->name);
			if (if_is_up(oifp))
				flog_err(
					LIB_ERR_INTERFACE,
					"interface rename detected on up interface: index %d was renamed from %s to %s, results are uncertain!",
					ifi_index, oifp->name, ifp->name);
			if_delete_update(oifp);
		}
	}
	if_set_index(ifp, ifi_index);
}
示例#2
0
static int interface_delete(ZAPI_CALLBACK_ARGS)
{
	struct interface *ifp;
	struct stream *s;

	s = zclient->ibuf;
	/* zebra_interface_state_read () updates interface structure in iflist
	 */
	ifp = zebra_interface_state_read(s, vrf_id);

	if (ifp == NULL)
		return 0;

	if_set_index(ifp, IFINDEX_INTERNAL);

	return 0;
}
示例#3
0
void eigrp_zebra_init(void)
{
	struct zclient_options opt = {.receive_notify = false};

	zclient = zclient_new_notify(master, &opt);

	zclient_init(zclient, ZEBRA_ROUTE_EIGRP, 0, &eigrpd_privs);
	zclient->zebra_connected = eigrp_zebra_connected;
	zclient->router_id_update = eigrp_router_id_update_zebra;
	zclient->interface_add = eigrp_interface_add;
	zclient->interface_delete = eigrp_interface_delete;
	zclient->interface_up = eigrp_interface_state_up;
	zclient->interface_down = eigrp_interface_state_down;
	zclient->interface_address_add = eigrp_interface_address_add;
	zclient->interface_address_delete = eigrp_interface_address_delete;
	zclient->redistribute_route_add = eigrp_zebra_read_route;
	zclient->redistribute_route_del = eigrp_zebra_read_route;
	zclient->route_notify_owner = eigrp_zebra_route_notify_owner;
}


/* Zebra route add and delete treatment. */
static int eigrp_zebra_read_route(int command, struct zclient *zclient,
				  zebra_size_t length, vrf_id_t vrf_id)
{
	struct zapi_route api;
	struct eigrp *eigrp;

	if (zapi_route_decode(zclient->ibuf, &api) < 0)
		return -1;

	if (IPV4_NET127(ntohl(api.prefix.u.prefix4.s_addr)))
		return 0;

	eigrp = eigrp_lookup();
	if (eigrp == NULL)
		return 0;

	if (command == ZEBRA_REDISTRIBUTE_ROUTE_ADD) {

	} else /* if (command == ZEBRA_REDISTRIBUTE_ROUTE_DEL) */
	{
	}

	return 0;
}

/* Inteface addition message from zebra. */
static int eigrp_interface_add(int command, struct zclient *zclient,
			       zebra_size_t length, vrf_id_t vrf_id)
{
	struct interface *ifp;
	struct eigrp_interface *ei;

	ifp = zebra_interface_add_read(zclient->ibuf, vrf_id);

	if (!ifp->info)
		return 0;

	ei = ifp->info;

	ei->params.type = eigrp_default_iftype(ifp);

	eigrp_if_update(ifp);

	return 0;
}

static int eigrp_interface_delete(int command, struct zclient *zclient,
				  zebra_size_t length, vrf_id_t vrf_id)
{
	struct interface *ifp;
	struct stream *s;

	s = zclient->ibuf;
	/* zebra_interface_state_read () updates interface structure in iflist
	 */
	ifp = zebra_interface_state_read(s, vrf_id);

	if (ifp == NULL)
		return 0;

	if (if_is_up(ifp))
		zlog_warn("Zebra: got delete of %s, but interface is still up",
			  ifp->name);

	if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE))
		zlog_debug(
			"Zebra: interface delete %s index %d flags %llx metric %d mtu %d",
			ifp->name, ifp->ifindex, (unsigned long long)ifp->flags,
			ifp->metric, ifp->mtu);

	if (ifp->info)
		eigrp_if_free(ifp->info, INTERFACE_DOWN_BY_ZEBRA);

	if_set_index(ifp, IFINDEX_INTERNAL);
	return 0;
}

static int eigrp_interface_address_add(int command, struct zclient *zclient,
				       zebra_size_t length, vrf_id_t vrf_id)
{
	struct connected *c;

	c = zebra_interface_address_read(command, zclient->ibuf, vrf_id);

	if (c == NULL)
		return 0;

	if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE)) {
		char buf[128];
		prefix2str(c->address, buf, sizeof(buf));
		zlog_debug("Zebra: interface %s address add %s", c->ifp->name,
			   buf);
	}

	eigrp_if_update(c->ifp);

	return 0;
}

static int eigrp_interface_address_delete(int command, struct zclient *zclient,
					  zebra_size_t length, vrf_id_t vrf_id)
{
	struct connected *c;
	struct interface *ifp;
	struct eigrp_interface *ei;

	c = zebra_interface_address_read(command, zclient->ibuf, vrf_id);

	if (c == NULL)
		return 0;

	if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE)) {
		char buf[128];
		prefix2str(c->address, buf, sizeof(buf));
		zlog_debug("Zebra: interface %s address delete %s",
			   c->ifp->name, buf);
	}

	ifp = c->ifp;
	ei = ifp->info;
	if (!ei)
		return 0;

	/* Call interface hook functions to clean up */
	eigrp_if_free(ei, INTERFACE_DOWN_BY_ZEBRA);

	connected_free(c);

	return 0;
}

static int eigrp_interface_state_up(int command, struct zclient *zclient,
				    zebra_size_t length, vrf_id_t vrf_id)
{
	struct interface *ifp;

	ifp = zebra_interface_if_lookup(zclient->ibuf);

	if (ifp == NULL)
		return 0;

	/* Interface is already up. */
	if (if_is_operative(ifp)) {
		/* Temporarily keep ifp values. */
		struct interface if_tmp;
		memcpy(&if_tmp, ifp, sizeof(struct interface));

		zebra_interface_if_set_value(zclient->ibuf, ifp);

		if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE))
			zlog_debug("Zebra: Interface[%s] state update.",
				   ifp->name);

		if (if_tmp.bandwidth != ifp->bandwidth) {
			if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE))
				zlog_debug(
					"Zebra: Interface[%s] bandwidth change %d -> %d.",
					ifp->name, if_tmp.bandwidth,
					ifp->bandwidth);

			//          eigrp_if_recalculate_output_cost (ifp);
		}

		if (if_tmp.mtu != ifp->mtu) {
			if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE))
				zlog_debug(
					"Zebra: Interface[%s] MTU change %u -> %u.",
					ifp->name, if_tmp.mtu, ifp->mtu);

			/* Must reset the interface (simulate down/up) when MTU
			 * changes. */
			eigrp_if_reset(ifp);
		}
		return 0;
	}

	zebra_interface_if_set_value(zclient->ibuf, ifp);

	if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE))
		zlog_debug("Zebra: Interface[%s] state change to up.",
			   ifp->name);

	if (ifp->info)
		eigrp_if_up(ifp->info);

	return 0;
}

static int eigrp_interface_state_down(int command, struct zclient *zclient,
				      zebra_size_t length, vrf_id_t vrf_id)
{
	struct interface *ifp;

	ifp = zebra_interface_state_read(zclient->ibuf, vrf_id);

	if (ifp == NULL)
		return 0;

	if (IS_DEBUG_EIGRP(zebra, ZEBRA_INTERFACE))
		zlog_debug("Zebra: Interface[%s] state change to down.",
			   ifp->name);

	if (ifp->info)
		eigrp_if_down(ifp->info);

	return 0;
}

static struct interface *zebra_interface_if_lookup(struct stream *s)
{
	char ifname_tmp[INTERFACE_NAMSIZ];

	/* Read interface name. */
	stream_get(ifname_tmp, s, INTERFACE_NAMSIZ);

	/* And look it up. */
	return if_lookup_by_name(ifname_tmp, VRF_DEFAULT);
}