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448 lines
14 KiB
C
448 lines
14 KiB
C
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/* Interface function header.
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* Copyright (C) 1999 Kunihiro Ishiguro
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*
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* This file is part of GNU Zebra.
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*
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* GNU Zebra is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* GNU Zebra is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; see the file COPYING; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _ZEBRA_INTERFACE_H
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#define _ZEBRA_INTERFACE_H
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#include "redistribute.h"
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#include "vrf.h"
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#include "hook.h"
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#include "zebra/zebra_l2.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* For interface multicast configuration. */
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#define IF_ZEBRA_MULTICAST_UNSPEC 0
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#define IF_ZEBRA_MULTICAST_ON 1
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#define IF_ZEBRA_MULTICAST_OFF 2
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/* For interface shutdown configuration. */
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#define IF_ZEBRA_SHUTDOWN_OFF 0
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#define IF_ZEBRA_SHUTDOWN_ON 1
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#if defined(HAVE_RTADV)
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/* Router advertisement parameter. From RFC4861, RFC6275 and RFC4191. */
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struct rtadvconf {
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/* A flag indicating whether or not the router sends periodic Router
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Advertisements and responds to Router Solicitations.
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Default: false */
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int AdvSendAdvertisements;
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/* The maximum time allowed between sending unsolicited multicast
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Router Advertisements from the interface, in milliseconds.
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MUST be no less than 70 ms [RFC6275 7.5] and no greater
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than 1800000 ms [RFC4861 6.2.1].
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Default: 600000 milliseconds */
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int MaxRtrAdvInterval;
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#define RTADV_MAX_RTR_ADV_INTERVAL 600000
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/* The minimum time allowed between sending unsolicited multicast
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Router Advertisements from the interface, in milliseconds.
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MUST be no less than 30 ms [RFC6275 7.5].
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MUST be no greater than .75 * MaxRtrAdvInterval.
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Default: 0.33 * MaxRtrAdvInterval */
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int MinRtrAdvInterval; /* This field is currently unused. */
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#define RTADV_MIN_RTR_ADV_INTERVAL (0.33 * RTADV_MAX_RTR_ADV_INTERVAL)
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/* Unsolicited Router Advertisements' interval timer. */
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int AdvIntervalTimer;
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/* The true/false value to be placed in the "Managed address
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configuration" flag field in the Router Advertisement. See
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[ADDRCONF].
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Default: false */
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int AdvManagedFlag;
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/* The true/false value to be placed in the "Other stateful
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configuration" flag field in the Router Advertisement. See
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[ADDRCONF].
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Default: false */
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int AdvOtherConfigFlag;
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/* The value to be placed in MTU options sent by the router. A
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value of zero indicates that no MTU options are sent.
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Default: 0 */
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int AdvLinkMTU;
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/* The value to be placed in the Reachable Time field in the Router
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Advertisement messages sent by the router. The value zero means
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unspecified (by this router). MUST be no greater than 3,600,000
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milliseconds (1 hour).
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Default: 0 */
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uint32_t AdvReachableTime;
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#define RTADV_MAX_REACHABLE_TIME 3600000
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/* The value to be placed in the Retrans Timer field in the Router
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Advertisement messages sent by the router. The value zero means
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unspecified (by this router).
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Default: 0 */
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int AdvRetransTimer;
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/* The default value to be placed in the Cur Hop Limit field in the
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Router Advertisement messages sent by the router. The value
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should be set to that current diameter of the Internet. The
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value zero means unspecified (by this router).
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Default: The value specified in the "Assigned Numbers" RFC
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[ASSIGNED] that was in effect at the time of implementation. */
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int AdvCurHopLimit;
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/* The value to be placed in the Router Lifetime field of Router
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Advertisements sent from the interface, in seconds. MUST be
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either zero or between MaxRtrAdvInterval and 9000 seconds. A
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value of zero indicates that the router is not to be used as a
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default router.
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Default: 3 * MaxRtrAdvInterval */
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int AdvDefaultLifetime;
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#define RTADV_MAX_RTRLIFETIME 9000 /* 2.5 hours */
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/* A list of prefixes to be placed in Prefix Information options in
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Router Advertisement messages sent from the interface.
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Default: all prefixes that the router advertises via routing
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protocols as being on-link for the interface from which the
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advertisement is sent. The link-local prefix SHOULD NOT be
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included in the list of advertised prefixes. */
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struct list *AdvPrefixList;
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/* The true/false value to be placed in the "Home agent"
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flag field in the Router Advertisement. See [RFC6275 7.1].
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Default: false */
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int AdvHomeAgentFlag;
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#ifndef ND_RA_FLAG_HOME_AGENT
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#define ND_RA_FLAG_HOME_AGENT 0x20
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#endif
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/* The value to be placed in Home Agent Information option if Home
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Flag is set.
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Default: 0 */
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int HomeAgentPreference;
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/* The value to be placed in Home Agent Information option if Home
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Flag is set. Lifetime (seconds) MUST not be greater than 18.2
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hours.
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The value 0 has special meaning: use of AdvDefaultLifetime value.
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Default: 0 */
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int HomeAgentLifetime;
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#define RTADV_MAX_HALIFETIME 65520 /* 18.2 hours */
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/* The true/false value to insert or not an Advertisement Interval
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option. See [RFC 6275 7.3]
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Default: false */
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int AdvIntervalOption;
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/* The value to be placed in the Default Router Preference field of
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a router advertisement. See [RFC 4191 2.1 & 2.2]
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Default: 0 (medium) */
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int DefaultPreference;
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#define RTADV_PREF_MEDIUM 0x0 /* Per RFC4191. */
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/*
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* List of recursive DNS servers to include in the RDNSS option.
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* See [RFC8106 5.1]
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*
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* Default: empty list; do not emit RDNSS option
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*/
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struct list *AdvRDNSSList;
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/*
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* List of DNS search domains to include in the DNSSL option.
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* See [RFC8106 5.2]
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*
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* Default: empty list; do not emit DNSSL option
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*/
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struct list *AdvDNSSLList;
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uint8_t inFastRexmit; /* True if we're rexmits faster than usual */
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/* Track if RA was configured by BGP or by the Operator or both */
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uint8_t ra_configured; /* Was RA configured? */
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#define BGP_RA_CONFIGURED (1<<0) /* BGP configured RA? */
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#define VTY_RA_CONFIGURED (1<<1) /* Operator configured RA? */
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#define VTY_RA_INTERVAL_CONFIGURED (1<<2) /* Operator configured RA interval */
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int NumFastReXmitsRemain; /* Loaded first with number of fast
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rexmits to do */
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#define RTADV_FAST_REXMIT_PERIOD 1 /* 1 sec */
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#define RTADV_NUM_FAST_REXMITS 4 /* Fast Rexmit RA 4 times on certain events */
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};
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struct rtadv_rdnss {
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/* Address of recursive DNS server to advertise */
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struct in6_addr addr;
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/*
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* Lifetime in seconds; all-ones means infinity, zero
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* stop using it.
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*/
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uint32_t lifetime;
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/* If lifetime not set, use a default of 3*MaxRtrAdvInterval */
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int lifetime_set;
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};
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/*
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* [RFC1035 2.3.4] sets the maximum length of a domain name (a sequence of
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* labels, each prefixed by a length octet) at 255 octets.
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*/
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#define RTADV_MAX_ENCODED_DOMAIN_NAME 255
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struct rtadv_dnssl {
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/* Domain name without trailing root zone dot (NUL-terminated) */
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char name[RTADV_MAX_ENCODED_DOMAIN_NAME - 1];
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/* Name encoded as in [RFC1035 3.1] */
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uint8_t encoded_name[RTADV_MAX_ENCODED_DOMAIN_NAME];
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/* Actual length of encoded_name */
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size_t encoded_len;
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/* Lifetime as for RDNSS */
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uint32_t lifetime;
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int lifetime_set;
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};
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#endif /* HAVE_RTADV */
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/* Zebra interface type - ones of interest. */
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typedef enum {
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ZEBRA_IF_OTHER = 0, /* Anything else */
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ZEBRA_IF_VXLAN, /* VxLAN interface */
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ZEBRA_IF_VRF, /* VRF device */
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ZEBRA_IF_BRIDGE, /* bridge device */
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ZEBRA_IF_VLAN, /* VLAN sub-interface */
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ZEBRA_IF_MACVLAN, /* MAC VLAN interface*/
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ZEBRA_IF_VETH, /* VETH interface*/
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ZEBRA_IF_BOND, /* Bond */
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ZEBRA_IF_BOND_SLAVE, /* Bond */
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} zebra_iftype_t;
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/* Zebra "slave" interface type */
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typedef enum {
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ZEBRA_IF_SLAVE_NONE, /* Not a slave */
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ZEBRA_IF_SLAVE_VRF, /* Member of a VRF */
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ZEBRA_IF_SLAVE_BRIDGE, /* Member of a bridge */
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ZEBRA_IF_SLAVE_BOND, /* Bond member */
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ZEBRA_IF_SLAVE_OTHER, /* Something else - e.g., bond slave */
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} zebra_slave_iftype_t;
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struct irdp_interface;
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/* `zebra' daemon local interface structure. */
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struct zebra_if {
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/* Shutdown configuration. */
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uint8_t shutdown;
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/* Multicast configuration. */
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uint8_t multicast;
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/* Router advertise configuration. */
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uint8_t rtadv_enable;
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/* Installed addresses chains tree. */
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struct route_table *ipv4_subnets;
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/* Information about up/down changes */
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unsigned int up_count;
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char up_last[QUAGGA_TIMESTAMP_LEN];
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unsigned int down_count;
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char down_last[QUAGGA_TIMESTAMP_LEN];
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#if defined(HAVE_RTADV)
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struct rtadvconf rtadv;
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unsigned int ra_sent, ra_rcvd;
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#endif /* HAVE_RTADV */
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struct irdp_interface *irdp;
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#ifdef HAVE_STRUCT_SOCKADDR_DL
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union {
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/* note that sdl_storage is never accessed, it only exists to
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* make space.
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* all actual uses refer to sdl - but use sizeof(sdl_storage)!
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* this fits
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* best with C aliasing rules. */
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struct sockaddr_dl sdl;
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struct sockaddr_storage sdl_storage;
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};
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#endif
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#ifdef SUNOS_5
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/* the real IFF_UP state of the primary interface.
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* need this to differentiate between all interfaces being
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* down (but primary still plumbed) and primary having gone
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* ~IFF_UP, and all addresses gone.
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*/
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uint8_t primary_state;
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#endif /* SUNOS_5 */
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/* ptm enable configuration */
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uint8_t ptm_enable;
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/* Zebra interface and "slave" interface type */
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zebra_iftype_t zif_type;
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zebra_slave_iftype_t zif_slave_type;
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/* Additional L2 info, depends on zif_type */
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union zebra_l2if_info l2info;
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/* For members of a bridge, link to bridge. */
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/* Note: If additional fields become necessary, this can be modified to
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* be a pointer to a dynamically allocd struct.
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*/
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struct zebra_l2info_brslave brslave_info;
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struct zebra_l2info_bondslave bondslave_info;
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/* Link fields - for sub-interfaces. */
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ifindex_t link_ifindex;
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struct interface *link;
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struct thread *speed_update;
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/*
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* Does this interface have a v6 to v4 ll neighbor entry
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* for bgp unnumbered?
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*/
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bool v6_2_v4_ll_neigh_entry;
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char neigh_mac[6];
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struct in6_addr v6_2_v4_ll_addr6;
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/* The description of the interface */
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char *desc;
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};
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DECLARE_HOOK(zebra_if_extra_info, (struct vty * vty, struct interface *ifp),
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(vty, ifp))
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DECLARE_HOOK(zebra_if_config_wr, (struct vty * vty, struct interface *ifp),
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(vty, ifp))
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static inline void zebra_if_set_ziftype(struct interface *ifp,
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zebra_iftype_t zif_type,
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zebra_slave_iftype_t zif_slave_type)
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{
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struct zebra_if *zif;
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zif = (struct zebra_if *)ifp->info;
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zif->zif_type = zif_type;
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zif->zif_slave_type = zif_slave_type;
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}
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#define IS_ZEBRA_IF_VRF(ifp) \
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(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VRF)
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#define IS_ZEBRA_IF_BRIDGE(ifp) \
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(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_BRIDGE)
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#define IS_ZEBRA_IF_VLAN(ifp) \
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(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VLAN)
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#define IS_ZEBRA_IF_VXLAN(ifp) \
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(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VXLAN)
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#define IS_ZEBRA_IF_MACVLAN(ifp) \
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(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_MACVLAN)
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#define IS_ZEBRA_IF_VETH(ifp) \
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(((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VETH)
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#define IS_ZEBRA_IF_BRIDGE_SLAVE(ifp) \
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(((struct zebra_if *)(ifp->info))->zif_slave_type \
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== ZEBRA_IF_SLAVE_BRIDGE)
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#define IS_ZEBRA_IF_VRF_SLAVE(ifp) \
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(((struct zebra_if *)(ifp->info))->zif_slave_type == ZEBRA_IF_SLAVE_VRF)
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#define IS_ZEBRA_IF_BOND_SLAVE(ifp) \
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(((struct zebra_if *)(ifp->info))->zif_slave_type \
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== ZEBRA_IF_SLAVE_BOND)
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extern void zebra_if_init(void);
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extern struct interface *if_lookup_by_index_per_ns(struct zebra_ns *, uint32_t);
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extern struct interface *if_lookup_by_name_per_ns(struct zebra_ns *,
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const char *);
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extern struct interface *if_link_per_ns(struct zebra_ns *, struct interface *);
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extern const char *ifindex2ifname_per_ns(struct zebra_ns *, unsigned int);
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extern void if_unlink_per_ns(struct interface *);
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extern void if_nbr_mac_to_ipv4ll_neigh_update(struct interface *fip,
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char mac[6],
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struct in6_addr *address,
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int add);
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extern void if_nbr_ipv6ll_to_ipv4ll_neigh_update(struct interface *ifp,
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struct in6_addr *address,
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int add);
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extern void if_nbr_ipv6ll_to_ipv4ll_neigh_del_all(struct interface *ifp);
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extern void if_delete_update(struct interface *ifp);
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extern void if_add_update(struct interface *ifp);
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extern void if_up(struct interface *);
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extern void if_down(struct interface *);
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extern void if_refresh(struct interface *);
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extern void if_flags_update(struct interface *, uint64_t);
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extern int if_subnet_add(struct interface *, struct connected *);
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extern int if_subnet_delete(struct interface *, struct connected *);
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extern int ipv6_address_configured(struct interface *ifp);
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extern void if_handle_vrf_change(struct interface *ifp, vrf_id_t vrf_id);
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extern void zebra_if_update_link(struct interface *ifp, ifindex_t link_ifindex,
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ns_id_t ns_id);
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extern void zebra_if_update_all_links(void);
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extern void zebra_if_set_protodown(struct interface *ifp, bool down);
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extern void vrf_add_update(struct vrf *vrfp);
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#ifdef HAVE_PROC_NET_DEV
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extern void ifstat_update_proc(void);
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#endif /* HAVE_PROC_NET_DEV */
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#ifdef HAVE_NET_RT_IFLIST
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extern void ifstat_update_sysctl(void);
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#endif /* HAVE_NET_RT_IFLIST */
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#ifdef HAVE_PROC_NET_DEV
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extern int interface_list_proc(void);
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#endif /* HAVE_PROC_NET_DEV */
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#ifdef HAVE_PROC_NET_IF_INET6
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extern int ifaddr_proc_ipv6(void);
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#endif /* HAVE_PROC_NET_IF_INET6 */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _ZEBRA_INTERFACE_H */
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