[mirror_frr.git] / lib / if.h

/* Interface related header.
 * Copyright (C) 1997, 98, 99 Kunihiro Ishiguro
 *
 * This file is part of GNU Zebra.
 *
 * GNU Zebra is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published
 * by the Free Software Foundation; either version 2, or (at your
 * option) any later version.
 *
 * GNU Zebra is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; see the file COPYING; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef _ZEBRA_IF_H
#define _ZEBRA_IF_H

#include "zebra.h"
#include "linklist.h"
#include "memory.h"
#include "qobj.h"
#include "hook.h"

#ifdef __cplusplus
extern "C" {
#endif

DECLARE_MTYPE(IF)
DECLARE_MTYPE(CONNECTED_LABEL)

/* Interface link-layer type, if known. Derived from:
 *
 * net/if_arp.h on various platforms - Linux especially.
 * http://www.iana.org/assignments/arp-parameters/arp-parameters.xhtml
 *
 * Some of the more obviously defunct technologies left out.
 */
enum zebra_link_type {
	ZEBRA_LLT_UNKNOWN = 0,
	ZEBRA_LLT_ETHER,
	ZEBRA_LLT_EETHER,
	ZEBRA_LLT_AX25,
	ZEBRA_LLT_PRONET,
	ZEBRA_LLT_IEEE802,
	ZEBRA_LLT_ARCNET,
	ZEBRA_LLT_APPLETLK,
	ZEBRA_LLT_DLCI,
	ZEBRA_LLT_ATM,
	ZEBRA_LLT_METRICOM,
	ZEBRA_LLT_IEEE1394,
	ZEBRA_LLT_EUI64,
	ZEBRA_LLT_INFINIBAND,
	ZEBRA_LLT_SLIP,
	ZEBRA_LLT_CSLIP,
	ZEBRA_LLT_SLIP6,
	ZEBRA_LLT_CSLIP6,
	ZEBRA_LLT_RSRVD,
	ZEBRA_LLT_ADAPT,
	ZEBRA_LLT_ROSE,
	ZEBRA_LLT_X25,
	ZEBRA_LLT_PPP,
	ZEBRA_LLT_CHDLC,
	ZEBRA_LLT_LAPB,
	ZEBRA_LLT_RAWHDLC,
	ZEBRA_LLT_IPIP,
	ZEBRA_LLT_IPIP6,
	ZEBRA_LLT_FRAD,
	ZEBRA_LLT_SKIP,
	ZEBRA_LLT_LOOPBACK,
	ZEBRA_LLT_LOCALTLK,
	ZEBRA_LLT_FDDI,
	ZEBRA_LLT_SIT,
	ZEBRA_LLT_IPDDP,
	ZEBRA_LLT_IPGRE,
	ZEBRA_LLT_IP6GRE,
	ZEBRA_LLT_PIMREG,
	ZEBRA_LLT_HIPPI,
	ZEBRA_LLT_ECONET,
	ZEBRA_LLT_IRDA,
	ZEBRA_LLT_FCPP,
	ZEBRA_LLT_FCAL,
	ZEBRA_LLT_FCPL,
	ZEBRA_LLT_FCFABRIC,
	ZEBRA_LLT_IEEE802_TR,
	ZEBRA_LLT_IEEE80211,
	ZEBRA_LLT_IEEE80211_RADIOTAP,
	ZEBRA_LLT_IEEE802154,
	ZEBRA_LLT_IEEE802154_PHY,
};

/*
  Interface name length.

   Linux define value in /usr/include/linux/if.h.
   #define IFNAMSIZ        16

   FreeBSD define value in /usr/include/net/if.h.
   #define IFNAMSIZ        16
*/

#define INTERFACE_NAMSIZ      20
#define INTERFACE_HWADDR_MAX  20

typedef signed int ifindex_t;

#ifdef HAVE_PROC_NET_DEV
struct if_stats {
	unsigned long rx_packets;   /* total packets received       */
	unsigned long tx_packets;   /* total packets transmitted    */
	unsigned long rx_bytes;     /* total bytes received         */
	unsigned long tx_bytes;     /* total bytes transmitted      */
	unsigned long rx_errors;    /* bad packets received         */
	unsigned long tx_errors;    /* packet transmit problems     */
	unsigned long rx_dropped;   /* no space in linux buffers    */
	unsigned long tx_dropped;   /* no space available in linux  */
	unsigned long rx_multicast; /* multicast packets received   */
	unsigned long rx_compressed;
	unsigned long tx_compressed;
	unsigned long collisions;

	/* detailed rx_errors: */
	unsigned long rx_length_errors;
	unsigned long rx_over_errors;   /* receiver ring buff overflow  */
	unsigned long rx_crc_errors;    /* recved pkt with crc error    */
	unsigned long rx_frame_errors;  /* recv'd frame alignment error */
	unsigned long rx_fifo_errors;   /* recv'r fifo overrun          */
	unsigned long rx_missed_errors; /* receiver missed packet     */
	/* detailed tx_errors */
	unsigned long tx_aborted_errors;
	unsigned long tx_carrier_errors;
	unsigned long tx_fifo_errors;
	unsigned long tx_heartbeat_errors;
	unsigned long tx_window_errors;
};
#endif /* HAVE_PROC_NET_DEV */

/* Here are "non-official" architectural constants. */
#define TE_EXT_MASK             0x0FFFFFFF
#define TE_EXT_ANORMAL          0x80000000
#define LOSS_PRECISION          0.000003
#define TE_KILO_BIT             1000
#define TE_BYTE                 8
#define DEFAULT_BANDWIDTH       10000
#define MAX_CLASS_TYPE          8
#define MAX_PKT_LOSS            50.331642

/*
 * Link Parameters Status:
 *  equal to 0: unset
 *  different from 0: set
 */
#define LP_UNSET                0x0000
#define LP_TE_METRIC            0x0001
#define LP_MAX_BW               0x0002
#define LP_MAX_RSV_BW           0x0004
#define LP_UNRSV_BW             0x0008
#define LP_ADM_GRP              0x0010
#define LP_RMT_AS               0x0020
#define LP_DELAY                0x0040
#define LP_MM_DELAY             0x0080
#define LP_DELAY_VAR            0x0100
#define LP_PKT_LOSS             0x0200
#define LP_RES_BW               0x0400
#define LP_AVA_BW               0x0800
#define LP_USE_BW               0x1000

#define IS_PARAM_UNSET(lp, st) !(lp->lp_status & st)
#define IS_PARAM_SET(lp, st) (lp->lp_status & st)
#define IS_LINK_PARAMS_SET(lp) (lp->lp_status != LP_UNSET)

#define SET_PARAM(lp, st) (lp->lp_status) |= (st)
#define UNSET_PARAM(lp, st) (lp->lp_status) &= ~(st)
#define RESET_LINK_PARAM(lp) (lp->lp_status = LP_UNSET)

/* Link Parameters for Traffic Engineering */
struct if_link_params {
	uint32_t lp_status; /* Status of Link Parameters: */
	uint32_t te_metric; /* Traffic Engineering metric */
	float default_bw;
	float max_bw;			/* Maximum Bandwidth */
	float max_rsv_bw;		/* Maximum Reservable Bandwidth */
	float unrsv_bw[MAX_CLASS_TYPE]; /* Unreserved Bandwidth per Class Type
					   (8) */
	uint32_t admin_grp;		/* Administrative group */
	uint32_t rmt_as;		/* Remote AS number */
	struct in_addr rmt_ip;		/* Remote IP address */
	uint32_t av_delay;		/* Link Average Delay */
	uint32_t min_delay;		/* Link Min Delay */
	uint32_t max_delay;		/* Link Max Delay */
	uint32_t delay_var;		/* Link Delay Variation */
	float pkt_loss;			/* Link Packet Loss */
	float res_bw;			/* Residual Bandwidth */
	float ava_bw;			/* Available Bandwidth */
	float use_bw;			/* Utilized Bandwidth */
};

#define INTERFACE_LINK_PARAMS_SIZE   sizeof(struct if_link_params)
#define HAS_LINK_PARAMS(ifp)  ((ifp)->link_params != NULL)

/* Interface structure */
struct interface {
	RB_ENTRY(interface) name_entry, index_entry;

	/* Interface name.  This should probably never be changed after the
	   interface is created, because the configuration info for this
	   interface
	   is associated with this structure.  For that reason, the interface
	   should also never be deleted (to avoid losing configuration info).
	   To delete, just set ifindex to IFINDEX_INTERNAL to indicate that the
	   interface does not exist in the kernel.
	 */
	char name[INTERFACE_NAMSIZ];

	/* Interface index (should be IFINDEX_INTERNAL for non-kernel or
	   deleted interfaces).
	   WARNING: the ifindex needs to be changed using the if_set_index()
	   function. Failure to respect this will cause corruption in the data
	   structure used to store the interfaces and if_lookup_by_index() will
	   not work as expected.
	 */
	ifindex_t ifindex;
#define IFINDEX_INTERNAL	0

	/* Zebra internal interface status */
	uint8_t status;
#define ZEBRA_INTERFACE_ACTIVE     (1 << 0)
#define ZEBRA_INTERFACE_SUB        (1 << 1)
#define ZEBRA_INTERFACE_LINKDETECTION (1 << 2)
#define ZEBRA_INTERFACE_VRF_LOOPBACK (1 << 3)

	/* Interface flags. */
	uint64_t flags;

	/* Interface metric */
	uint32_t metric;

	/* Interface Speed in Mb/s */
	uint32_t speed;

	/* Interface MTU. */
	unsigned int mtu; /* IPv4 MTU */
	unsigned int
		mtu6; /* IPv6 MTU - probably, but not neccessarily same as mtu
			 */

	/* Link-layer information and hardware address */
	enum zebra_link_type ll_type;
	uint8_t hw_addr[INTERFACE_HWADDR_MAX];
	int hw_addr_len;

	/* interface bandwidth, kbits */
	unsigned int bandwidth;

	/* Link parameters for Traffic Engineering */
	struct if_link_params *link_params;

	/* description of the interface. */
	char *desc;

	/* Distribute list. */
	void *distribute_in;
	void *distribute_out;

	/* Connected address list. */
	struct list *connected;

	/* Neighbor connected address list. */
	struct list *nbr_connected;

	/* Daemon specific interface data pointer. */
	void *info;

	char ptm_enable; /* Should we look at ptm_status ? */
	char ptm_status;

/* Statistics fileds. */
#ifdef HAVE_PROC_NET_DEV
	struct if_stats stats;
#endif /* HAVE_PROC_NET_DEV */
#ifdef HAVE_NET_RT_IFLIST
	struct if_data stats;
#endif /* HAVE_NET_RT_IFLIST */

	struct route_node *node;
	vrf_id_t vrf_id;

	QOBJ_FIELDS
};

RB_HEAD(if_name_head, interface);
RB_PROTOTYPE(if_name_head, interface, name_entry, if_cmp_func)
RB_HEAD(if_index_head, interface);
RB_PROTOTYPE(if_index_head, interface, index_entry, if_cmp_func)
DECLARE_QOBJ_TYPE(interface)

#define IFNAME_RB_INSERT(vrf, ifp)                                             \
	if (RB_INSERT(if_name_head, &vrf->ifaces_by_name, (ifp)))              \
		flog_err(EC_LIB_INTERFACE,                                     \
			 "%s(%s): corruption detected -- interface with this " \
			 "name exists already in VRF %u!",                     \
			 __func__, (ifp)->name, (ifp)->vrf_id);

#define IFNAME_RB_REMOVE(vrf, ifp)                                             \
	if (RB_REMOVE(if_name_head, &vrf->ifaces_by_name, (ifp)) == NULL)      \
		flog_err(EC_LIB_INTERFACE,                                     \
			 "%s(%s): corruption detected -- interface with this " \
			 "name doesn't exist in VRF %u!",                      \
			 __func__, (ifp)->name, (ifp)->vrf_id);

#define IFINDEX_RB_INSERT(vrf, ifp)                                            \
	if (RB_INSERT(if_index_head, &vrf->ifaces_by_index, (ifp)))            \
		flog_err(EC_LIB_INTERFACE,                                     \
			 "%s(%u): corruption detected -- interface with this " \
			 "ifindex exists already in VRF %u!",                  \
			 __func__, (ifp)->ifindex, (ifp)->vrf_id);

#define IFINDEX_RB_REMOVE(vrf, ifp)                                            \
	if (RB_REMOVE(if_index_head, &vrf->ifaces_by_index, (ifp)) == NULL)    \
		flog_err(EC_LIB_INTERFACE,                                     \
			 "%s(%u): corruption detected -- interface with this " \
			 "ifindex doesn't exist in VRF %u!",                   \
			 __func__, (ifp)->ifindex, (ifp)->vrf_id);

#define FOR_ALL_INTERFACES(vrf, ifp)                                           \
	if (vrf)                                                               \
		RB_FOREACH (ifp, if_name_head, &vrf->ifaces_by_name)

#define FOR_ALL_INTERFACES_ADDRESSES(ifp, connected, node)                     \
	for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected))

/* called from the library code whenever interfaces are created/deleted
 * note: interfaces may not be fully realized at that point; also they
 * may not exist in the system (ifindex = IFINDEX_INTERNAL)
 *
 * priority values are important here, daemons should be at 0 while modules
 * can use 1000+ so they run after the daemon has initialised daemon-specific
 * interface data
 */
DECLARE_HOOK(if_add, (struct interface * ifp), (ifp))
DECLARE_KOOH(if_del, (struct interface * ifp), (ifp))

#define METRIC_MAX (~0)

/* Connected address structure. */
struct connected {
	/* Attached interface. */
	struct interface *ifp;

	/* Flags for configuration. */
	uint8_t conf;
#define ZEBRA_IFC_REAL         (1 << 0)
#define ZEBRA_IFC_CONFIGURED   (1 << 1)
#define ZEBRA_IFC_QUEUED       (1 << 2)
	/*
	   The ZEBRA_IFC_REAL flag should be set if and only if this address
	   exists in the kernel and is actually usable. (A case where it exists
	   but
	   is not yet usable would be IPv6 with DAD)
	   The ZEBRA_IFC_CONFIGURED flag should be set if and only if this
	   address
	   was configured by the user from inside quagga.
	   The ZEBRA_IFC_QUEUED flag should be set if and only if the address
	   exists
	   in the kernel. It may and should be set although the address might
	   not be
	   usable yet. (compare with ZEBRA_IFC_REAL)
	 */

	/* Flags for connected address. */
	uint8_t flags;
#define ZEBRA_IFA_SECONDARY    (1 << 0)
#define ZEBRA_IFA_PEER         (1 << 1)
#define ZEBRA_IFA_UNNUMBERED   (1 << 2)
	/* N.B. the ZEBRA_IFA_PEER flag should be set if and only if
	   a peer address has been configured.  If this flag is set,
	   the destination field must contain the peer address.
	   Otherwise, if this flag is not set, the destination address
	   will either contain a broadcast address or be NULL.
	 */

	/* Address of connected network. */
	struct prefix *address;

	/* Peer or Broadcast address, depending on whether ZEBRA_IFA_PEER is
	   set.
	   Note: destination may be NULL if ZEBRA_IFA_PEER is not set. */
	struct prefix *destination;

	/* Label for Linux 2.2.X and upper. */
	char *label;

	/*
	 * Used for setting the connected route's cost. If the metric
	 * here is set to METRIC_MAX the connected route falls back to
	 * "struct interface"
	 */
	uint32_t metric;
};

/* Nbr Connected address structure. */
struct nbr_connected {
	/* Attached interface. */
	struct interface *ifp;

	/* Address of connected network. */
	struct prefix *address;
};

/* Does the destination field contain a peer address? */
#define CONNECTED_PEER(C) CHECK_FLAG((C)->flags, ZEBRA_IFA_PEER)

/* Prefix to insert into the RIB */
#define CONNECTED_PREFIX(C)                                                    \
	(CONNECTED_PEER(C) ? (C)->destination : (C)->address)

/* Identifying address.  We guess that if there's a peer address, but the
   local address is in the same prefix, then the local address may be unique. */
#define CONNECTED_ID(C)                                                        \
	((CONNECTED_PEER(C) && !prefix_match((C)->destination, (C)->address))  \
		 ? (C)->destination                                            \
		 : (C)->address)

/* There are some interface flags which are only supported by some
   operating system. */

#ifndef IFF_NOTRAILERS
#define IFF_NOTRAILERS 0x0
#endif /* IFF_NOTRAILERS */
#ifndef IFF_OACTIVE
#define IFF_OACTIVE 0x0
#endif /* IFF_OACTIVE */
#ifndef IFF_SIMPLEX
#define IFF_SIMPLEX 0x0
#endif /* IFF_SIMPLEX */
#ifndef IFF_LINK0
#define IFF_LINK0 0x0
#endif /* IFF_LINK0 */
#ifndef IFF_LINK1
#define IFF_LINK1 0x0
#endif /* IFF_LINK1 */
#ifndef IFF_LINK2
#define IFF_LINK2 0x0
#endif /* IFF_LINK2 */
#ifndef IFF_NOXMIT
#define IFF_NOXMIT 0x0
#endif /* IFF_NOXMIT */
#ifndef IFF_NORTEXCH
#define IFF_NORTEXCH 0x0
#endif /* IFF_NORTEXCH */
#ifndef IFF_IPV4
#define IFF_IPV4 0x0
#endif /* IFF_IPV4 */
#ifndef IFF_IPV6
#define IFF_IPV6 0x0
#endif /* IFF_IPV6 */
#ifndef IFF_VIRTUAL
#define IFF_VIRTUAL 0x0
#endif /* IFF_VIRTUAL */

/* Prototypes. */
extern int if_cmp_name_func(const char *p1, const char *p2);

/*
 * Passing in VRF_UNKNOWN is a valid thing to do, unless we
 * are creating a new interface.
 *
 * This is useful for vrf route-leaking.  So more than anything
 * else think before you use VRF_UNKNOWN
 */
extern void if_update_to_new_vrf(struct interface *, vrf_id_t vrf_id);
extern struct interface *if_create(const char *name, vrf_id_t vrf_id);
extern struct interface *if_lookup_by_index(ifindex_t, vrf_id_t vrf_id);
extern struct interface *if_lookup_exact_address(void *matchaddr, int family,
						 vrf_id_t vrf_id);
extern struct connected *if_lookup_address(void *matchaddr, int family,
					   vrf_id_t vrf_id);
extern struct interface *if_lookup_prefix(struct prefix *prefix,
					  vrf_id_t vrf_id);

/* These 3 functions are to be used when the ifname argument is terminated
   by a '\0' character: */
extern struct interface *if_lookup_by_name_all_vrf(const char *ifname);
extern struct interface *if_lookup_by_name(const char *ifname, vrf_id_t vrf_id);
extern struct interface *if_get_by_name(const char *ifname, vrf_id_t vrf_id);
extern void if_set_index(struct interface *ifp, ifindex_t ifindex);

/* Delete the interface, but do not free the structure, and leave it in the
   interface list.  It is often advisable to leave the pseudo interface
   structure because there may be configuration information attached. */
extern void if_delete_retain(struct interface *);

/* Delete and free the interface structure: calls if_delete_retain and then
   deletes it from the interface list and frees the structure. */
extern void if_delete(struct interface *);

extern int if_is_up(const struct interface *ifp);
extern int if_is_running(const struct interface *ifp);
extern int if_is_operative(const struct interface *ifp);
extern int if_is_no_ptm_operative(const struct interface *ifp);
extern int if_is_loopback(const struct interface *ifp);
extern int if_is_vrf(const struct interface *ifp);
extern bool if_is_loopback_or_vrf(const struct interface *ifp);
extern int if_is_broadcast(const struct interface *ifp);
extern int if_is_pointopoint(const struct interface *ifp);
extern int if_is_multicast(const struct interface *ifp);
struct vrf;
extern void if_terminate(struct vrf *vrf);
extern void if_dump_all(void);
extern const char *if_flag_dump(unsigned long);
extern const char *if_link_type_str(enum zebra_link_type);

/* Please use ifindex2ifname instead of if_indextoname where possible;
   ifindex2ifname uses internal interface info, whereas if_indextoname must
   make a system call. */
extern const char *ifindex2ifname(ifindex_t, vrf_id_t vrf_id);

/* Please use ifname2ifindex instead of if_nametoindex where possible;
   ifname2ifindex uses internal interface info, whereas if_nametoindex must
   make a system call. */
extern ifindex_t ifname2ifindex(const char *ifname, vrf_id_t vrf_id);

/* Connected address functions. */
extern struct connected *connected_new(void);
extern void connected_free(struct connected *);
extern void connected_add(struct interface *, struct connected *);
extern struct connected *
connected_add_by_prefix(struct interface *, struct prefix *, struct prefix *);
extern struct connected *connected_delete_by_prefix(struct interface *,
						    struct prefix *);
extern struct connected *connected_lookup_prefix(struct interface *,
						 struct prefix *);
extern struct connected *connected_lookup_prefix_exact(struct interface *,
						       struct prefix *);
extern struct nbr_connected *nbr_connected_new(void);
extern void nbr_connected_free(struct nbr_connected *);
struct nbr_connected *nbr_connected_check(struct interface *, struct prefix *);

/* link parameters */
struct if_link_params *if_link_params_get(struct interface *);
void if_link_params_free(struct interface *);

/* Northbound. */
extern void if_cmd_init(void);
extern const struct frr_yang_module_info frr_interface_info;

#ifdef __cplusplus
}
#endif

#endif /* _ZEBRA_IF_H */
Commit	Line	Data
718e3744	1	/* Interface related header.
896014f4 DL	2	* Copyright (C) 1997, 98, 99 Kunihiro Ishiguro
	3	*
	4	* This file is part of GNU Zebra.
	5	*
	6	* GNU Zebra is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published
	8	* by the Free Software Foundation; either version 2, or (at your
	9	* option) any later version.
	10	*
	11	* GNU Zebra is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along
	17	* with this program; see the file COPYING; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
718e3744	20
	21	#ifndef _ZEBRA_IF_H
	22	#define _ZEBRA_IF_H
	23
b892f1dd	24	#include "zebra.h"
718e3744	25	#include "linklist.h"
4a1ab8e4	26	#include "memory.h"
e80e7cce	27	#include "qobj.h"
ce19a04a	28	#include "hook.h"
4a1ab8e4	29
5e244469 RW	30	#ifdef __cplusplus
	31	extern "C" {
	32	#endif
	33
4a1ab8e4 DL	34	DECLARE_MTYPE(IF)
4a1ab8e4 DL	35	DECLARE_MTYPE(CONNECTED_LABEL)
718e3744	36
8ccc7e80 TT	37	/* Interface link-layer type, if known. Derived from:
	38	*
	39	* net/if_arp.h on various platforms - Linux especially.
	40	* http://www.iana.org/assignments/arp-parameters/arp-parameters.xhtml
	41	*
	42	* Some of the more obviously defunct technologies left out.
	43	*/
	44	enum zebra_link_type {
d62a17ae	45	ZEBRA_LLT_UNKNOWN = 0,
	46	ZEBRA_LLT_ETHER,
	47	ZEBRA_LLT_EETHER,
	48	ZEBRA_LLT_AX25,
	49	ZEBRA_LLT_PRONET,
	50	ZEBRA_LLT_IEEE802,
	51	ZEBRA_LLT_ARCNET,
	52	ZEBRA_LLT_APPLETLK,
	53	ZEBRA_LLT_DLCI,
	54	ZEBRA_LLT_ATM,
	55	ZEBRA_LLT_METRICOM,
	56	ZEBRA_LLT_IEEE1394,
	57	ZEBRA_LLT_EUI64,
	58	ZEBRA_LLT_INFINIBAND,
	59	ZEBRA_LLT_SLIP,
	60	ZEBRA_LLT_CSLIP,
	61	ZEBRA_LLT_SLIP6,
	62	ZEBRA_LLT_CSLIP6,
	63	ZEBRA_LLT_RSRVD,
	64	ZEBRA_LLT_ADAPT,
	65	ZEBRA_LLT_ROSE,
	66	ZEBRA_LLT_X25,
	67	ZEBRA_LLT_PPP,
	68	ZEBRA_LLT_CHDLC,
	69	ZEBRA_LLT_LAPB,
	70	ZEBRA_LLT_RAWHDLC,
	71	ZEBRA_LLT_IPIP,
	72	ZEBRA_LLT_IPIP6,
	73	ZEBRA_LLT_FRAD,
	74	ZEBRA_LLT_SKIP,
	75	ZEBRA_LLT_LOOPBACK,
	76	ZEBRA_LLT_LOCALTLK,
	77	ZEBRA_LLT_FDDI,
	78	ZEBRA_LLT_SIT,
	79	ZEBRA_LLT_IPDDP,
	80	ZEBRA_LLT_IPGRE,
	81	ZEBRA_LLT_IP6GRE,
	82	ZEBRA_LLT_PIMREG,
	83	ZEBRA_LLT_HIPPI,
	84	ZEBRA_LLT_ECONET,
	85	ZEBRA_LLT_IRDA,
	86	ZEBRA_LLT_FCPP,
	87	ZEBRA_LLT_FCAL,
	88	ZEBRA_LLT_FCPL,
	89	ZEBRA_LLT_FCFABRIC,
	90	ZEBRA_LLT_IEEE802_TR,
	91	ZEBRA_LLT_IEEE80211,
	92	ZEBRA_LLT_IEEE80211_RADIOTAP,
	93	ZEBRA_LLT_IEEE802154,
	94	ZEBRA_LLT_IEEE802154_PHY,
8ccc7e80 TT	95	};
8ccc7e80 TT	96
718e3744	97	/*
	98	Interface name length.
	99
	100	Linux define value in /usr/include/linux/if.h.
	101	#define IFNAMSIZ 16
	102
	103	FreeBSD define value in /usr/include/net/if.h.
	104	#define IFNAMSIZ 16
	105	*/
	106
	107	#define INTERFACE_NAMSIZ 20
	108	#define INTERFACE_HWADDR_MAX 20
	109
b892f1dd PJ	110	typedef signed int ifindex_t;
b892f1dd PJ	111
718e3744	112	#ifdef HAVE_PROC_NET_DEV
d62a17ae	113	struct if_stats {
	114	unsigned long rx_packets; /* total packets received */
	115	unsigned long tx_packets; /* total packets transmitted */
	116	unsigned long rx_bytes; /* total bytes received */
	117	unsigned long tx_bytes; /* total bytes transmitted */
	118	unsigned long rx_errors; /* bad packets received */
	119	unsigned long tx_errors; /* packet transmit problems */
	120	unsigned long rx_dropped; /* no space in linux buffers */
	121	unsigned long tx_dropped; /* no space available in linux */
	122	unsigned long rx_multicast; /* multicast packets received */
	123	unsigned long rx_compressed;
	124	unsigned long tx_compressed;
	125	unsigned long collisions;
	126
	127	/* detailed rx_errors: */
	128	unsigned long rx_length_errors;
	129	unsigned long rx_over_errors; /* receiver ring buff overflow */
	130	unsigned long rx_crc_errors; /* recved pkt with crc error */
	131	unsigned long rx_frame_errors; /* recv'd frame alignment error */
	132	unsigned long rx_fifo_errors; /* recv'r fifo overrun */
	133	unsigned long rx_missed_errors; /* receiver missed packet */
	134	/* detailed tx_errors */
	135	unsigned long tx_aborted_errors;
	136	unsigned long tx_carrier_errors;
	137	unsigned long tx_fifo_errors;
	138	unsigned long tx_heartbeat_errors;
	139	unsigned long tx_window_errors;
718e3744	140	};
	141	#endif /* HAVE_PROC_NET_DEV */
	142
16f1b9ee OD	143	/* Here are "non-official" architectural constants. */
	144	#define TE_EXT_MASK 0x0FFFFFFF
	145	#define TE_EXT_ANORMAL 0x80000000
	146	#define LOSS_PRECISION 0.000003
	147	#define TE_KILO_BIT 1000
	148	#define TE_BYTE 8
	149	#define DEFAULT_BANDWIDTH 10000
	150	#define MAX_CLASS_TYPE 8
	151	#define MAX_PKT_LOSS 50.331642
	152
daf0a4d2 OD	153	/*
	154	* Link Parameters Status:
	155	* equal to 0: unset
	156	* different from 0: set
	157	*/
16f1b9ee	158	#define LP_UNSET 0x0000
daf0a4d2	159	#define LP_TE_METRIC 0x0001
16f1b9ee OD	160	#define LP_MAX_BW 0x0002
	161	#define LP_MAX_RSV_BW 0x0004
	162	#define LP_UNRSV_BW 0x0008
	163	#define LP_ADM_GRP 0x0010
	164	#define LP_RMT_AS 0x0020
	165	#define LP_DELAY 0x0040
	166	#define LP_MM_DELAY 0x0080
	167	#define LP_DELAY_VAR 0x0100
	168	#define LP_PKT_LOSS 0x0200
	169	#define LP_RES_BW 0x0400
	170	#define LP_AVA_BW 0x0800
	171	#define LP_USE_BW 0x1000
	172
	173	#define IS_PARAM_UNSET(lp, st) !(lp->lp_status & st)
	174	#define IS_PARAM_SET(lp, st) (lp->lp_status & st)
	175	#define IS_LINK_PARAMS_SET(lp) (lp->lp_status != LP_UNSET)
	176
	177	#define SET_PARAM(lp, st) (lp->lp_status) \|= (st)
	178	#define UNSET_PARAM(lp, st) (lp->lp_status) &= ~(st)
	179	#define RESET_LINK_PARAM(lp) (lp->lp_status = LP_UNSET)
	180
	181	/* Link Parameters for Traffic Engineering */
	182	struct if_link_params {
d7c0a89a QY	183	uint32_t lp_status; /* Status of Link Parameters: */
d7c0a89a QY	184	uint32_t te_metric; /* Traffic Engineering metric */
d62a17ae	185	float default_bw;
	186	float max_bw; /* Maximum Bandwidth */
	187	float max_rsv_bw; /* Maximum Reservable Bandwidth */
	188	float unrsv_bw[MAX_CLASS_TYPE]; /* Unreserved Bandwidth per Class Type
	189	(8) */
d7c0a89a QY	190	uint32_t admin_grp; /* Administrative group */
d7c0a89a QY	191	uint32_t rmt_as; /* Remote AS number */
d62a17ae	192	struct in_addr rmt_ip; /* Remote IP address */
d7c0a89a QY	193	uint32_t av_delay; /* Link Average Delay */
	194	uint32_t min_delay; /* Link Min Delay */
	195	uint32_t max_delay; /* Link Max Delay */
	196	uint32_t delay_var; /* Link Delay Variation */
d62a17ae	197	float pkt_loss; /* Link Packet Loss */
	198	float res_bw; /* Residual Bandwidth */
	199	float ava_bw; /* Available Bandwidth */
	200	float use_bw; /* Utilized Bandwidth */
16f1b9ee OD	201	};
	202
	203	#define INTERFACE_LINK_PARAMS_SIZE sizeof(struct if_link_params)
	204	#define HAS_LINK_PARAMS(ifp) ((ifp)->link_params != NULL)
	205
718e3744	206	/* Interface structure */
d62a17ae	207	struct interface {
ff880b78	208	RB_ENTRY(interface) name_entry, index_entry;
f4e14fdb	209
d62a17ae	210	/* Interface name. This should probably never be changed after the
	211	interface is created, because the configuration info for this
	212	interface
	213	is associated with this structure. For that reason, the interface
	214	should also never be deleted (to avoid losing configuration info).
	215	To delete, just set ifindex to IFINDEX_INTERNAL to indicate that the
	216	interface does not exist in the kernel.
	217	*/
bcc24579	218	char name[INTERFACE_NAMSIZ];
d62a17ae	219
d62a17ae	220	/* Interface index (should be IFINDEX_INTERNAL for non-kernel or
ff880b78 RW	221	deleted interfaces).
	222	WARNING: the ifindex needs to be changed using the if_set_index()
	223	function. Failure to respect this will cause corruption in the data
	224	structure used to store the interfaces and if_lookup_by_index() will
	225	not work as expected.
	226	*/
d62a17ae	227	ifindex_t ifindex;
d2fc8896	228	#define IFINDEX_INTERNAL 0
718e3744	229
d62a17ae	230	/* Zebra internal interface status */
d7c0a89a	231	uint8_t status;
718e3744	232	#define ZEBRA_INTERFACE_ACTIVE (1 << 0)
718e3744	233	#define ZEBRA_INTERFACE_SUB (1 << 1)
2e3b2e47	234	#define ZEBRA_INTERFACE_LINKDETECTION (1 << 2)
c23af4d3	235	#define ZEBRA_INTERFACE_VRF_LOOPBACK (1 << 3)
525c1839	236
d62a17ae	237	/* Interface flags. */
d62a17ae	238	uint64_t flags;
718e3744	239
d62a17ae	240	/* Interface metric */
d62a17ae	241	uint32_t metric;
718e3744	242
d62a17ae	243	/* Interface Speed in Mb/s */
d62a17ae	244	uint32_t speed;
2d7f0d76	245
d62a17ae	246	/* Interface MTU. */
	247	unsigned int mtu; /* IPv4 MTU */
	248	unsigned int
	249	mtu6; /* IPv6 MTU - probably, but not neccessarily same as mtu
9d303b37	250	*/
718e3744	251
d62a17ae	252	/* Link-layer information and hardware address */
d62a17ae	253	enum zebra_link_type ll_type;
d7c0a89a	254	uint8_t hw_addr[INTERFACE_HWADDR_MAX];
d62a17ae	255	int hw_addr_len;
718e3744	256
d62a17ae	257	/* interface bandwidth, kbits */
d62a17ae	258	unsigned int bandwidth;
16f1b9ee	259
d62a17ae	260	/* Link parameters for Traffic Engineering */
d62a17ae	261	struct if_link_params *link_params;
718e3744	262
d62a17ae	263	/* description of the interface. */
d62a17ae	264	char *desc;
718e3744	265
d62a17ae	266	/* Distribute list. */
	267	void *distribute_in;
	268	void *distribute_out;
718e3744	269
d62a17ae	270	/* Connected address list. */
d62a17ae	271	struct list *connected;
a80beece	272
d62a17ae	273	/* Neighbor connected address list. */
d62a17ae	274	struct list *nbr_connected;
718e3744	275
d62a17ae	276	/* Daemon specific interface data pointer. */
d62a17ae	277	void *info;
244c1cdc	278
d62a17ae	279	char ptm_enable; /* Should we look at ptm_status ? */
	280	char ptm_status;
	281
	282	/* Statistics fileds. */
718e3744	283	#ifdef HAVE_PROC_NET_DEV
d62a17ae	284	struct if_stats stats;
d62a17ae	285	#endif /* HAVE_PROC_NET_DEV */
718e3744	286	#ifdef HAVE_NET_RT_IFLIST
d62a17ae	287	struct if_data stats;
718e3744	288	#endif /* HAVE_NET_RT_IFLIST */
3968dbf8	289
d62a17ae	290	struct route_node *node;
d62a17ae	291	vrf_id_t vrf_id;
e80e7cce	292
d62a17ae	293	QOBJ_FIELDS
718e3744	294	};
0c74bbe0	295
f4e14fdb	296	RB_HEAD(if_name_head, interface);
f3dd45d1	297	RB_PROTOTYPE(if_name_head, interface, name_entry, if_cmp_func)
ff880b78	298	RB_HEAD(if_index_head, interface);
f3dd45d1	299	RB_PROTOTYPE(if_index_head, interface, index_entry, if_cmp_func)
e80e7cce	300	DECLARE_QOBJ_TYPE(interface)
718e3744	301
ff880b78 RW	302	#define IFNAME_RB_INSERT(vrf, ifp) \
ff880b78 RW	303	if (RB_INSERT(if_name_head, &vrf->ifaces_by_name, (ifp))) \
1c50c1c0 QY	304	flog_err(EC_LIB_INTERFACE, \
	305	"%s(%s): corruption detected -- interface with this " \
	306	"name exists already in VRF %u!", \
	307	__func__, (ifp)->name, (ifp)->vrf_id);
ff880b78 RW	308
	309	#define IFNAME_RB_REMOVE(vrf, ifp) \
	310	if (RB_REMOVE(if_name_head, &vrf->ifaces_by_name, (ifp)) == NULL) \
1c50c1c0 QY	311	flog_err(EC_LIB_INTERFACE, \
	312	"%s(%s): corruption detected -- interface with this " \
	313	"name doesn't exist in VRF %u!", \
	314	__func__, (ifp)->name, (ifp)->vrf_id);
ff880b78 RW	315
	316	#define IFINDEX_RB_INSERT(vrf, ifp) \
	317	if (RB_INSERT(if_index_head, &vrf->ifaces_by_index, (ifp))) \
1c50c1c0 QY	318	flog_err(EC_LIB_INTERFACE, \
	319	"%s(%u): corruption detected -- interface with this " \
	320	"ifindex exists already in VRF %u!", \
	321	__func__, (ifp)->ifindex, (ifp)->vrf_id);
ff880b78 RW	322
	323	#define IFINDEX_RB_REMOVE(vrf, ifp) \
	324	if (RB_REMOVE(if_index_head, &vrf->ifaces_by_index, (ifp)) == NULL) \
1c50c1c0 QY	325	flog_err(EC_LIB_INTERFACE, \
	326	"%s(%u): corruption detected -- interface with this " \
	327	"ifindex doesn't exist in VRF %u!", \
	328	__func__, (ifp)->ifindex, (ifp)->vrf_id);
ff880b78	329
451fda4f RW	330	#define FOR_ALL_INTERFACES(vrf, ifp) \
	331	if (vrf) \
	332	RB_FOREACH (ifp, if_name_head, &vrf->ifaces_by_name)
	333
	334	#define FOR_ALL_INTERFACES_ADDRESSES(ifp, connected, node) \
	335	for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected))
	336
ce19a04a DL	337	/* called from the library code whenever interfaces are created/deleted
	338	* note: interfaces may not be fully realized at that point; also they
	339	* may not exist in the system (ifindex = IFINDEX_INTERNAL)
	340	*
	341	* priority values are important here, daemons should be at 0 while modules
	342	* can use 1000+ so they run after the daemon has initialised daemon-specific
	343	* interface data
	344	*/
996c9314 LB	345	DECLARE_HOOK(if_add, (struct interface * ifp), (ifp))
996c9314 LB	346	DECLARE_KOOH(if_del, (struct interface * ifp), (ifp))
ce19a04a	347
cde1af84 AK	348	#define METRIC_MAX (~0)
cde1af84 AK	349
718e3744	350	/* Connected address structure. */
d62a17ae	351	struct connected {
	352	/* Attached interface. */
	353	struct interface *ifp;
718e3744	354
d62a17ae	355	/* Flags for configuration. */
d7c0a89a	356	uint8_t conf;
718e3744	357	#define ZEBRA_IFC_REAL (1 << 0)
718e3744	358	#define ZEBRA_IFC_CONFIGURED (1 << 1)
f7f740fe	359	#define ZEBRA_IFC_QUEUED (1 << 2)
d62a17ae	360	/*
	361	The ZEBRA_IFC_REAL flag should be set if and only if this address
	362	exists in the kernel and is actually usable. (A case where it exists
	363	but
	364	is not yet usable would be IPv6 with DAD)
	365	The ZEBRA_IFC_CONFIGURED flag should be set if and only if this
	366	address
	367	was configured by the user from inside quagga.
	368	The ZEBRA_IFC_QUEUED flag should be set if and only if the address
	369	exists
	370	in the kernel. It may and should be set although the address might
	371	not be
	372	usable yet. (compare with ZEBRA_IFC_REAL)
	373	*/
	374
	375	/* Flags for connected address. */
d7c0a89a	376	uint8_t flags;
e4529636 AS	377	#define ZEBRA_IFA_SECONDARY (1 << 0)
e4529636 AS	378	#define ZEBRA_IFA_PEER (1 << 1)
525c1839	379	#define ZEBRA_IFA_UNNUMBERED (1 << 2)
d62a17ae	380	/* N.B. the ZEBRA_IFA_PEER flag should be set if and only if
	381	a peer address has been configured. If this flag is set,
	382	the destination field must contain the peer address.
	383	Otherwise, if this flag is not set, the destination address
	384	will either contain a broadcast address or be NULL.
	385	*/
	386
	387	/* Address of connected network. */
	388	struct prefix *address;
	389
	390	/* Peer or Broadcast address, depending on whether ZEBRA_IFA_PEER is
	391	set.
	392	Note: destination may be NULL if ZEBRA_IFA_PEER is not set. */
	393	struct prefix *destination;
	394
	395	/* Label for Linux 2.2.X and upper. */
	396	char *label;
cde1af84 AK	397
	398	/*
	399	* Used for setting the connected route's cost. If the metric
	400	* here is set to METRIC_MAX the connected route falls back to
	401	* "struct interface"
	402	*/
	403	uint32_t metric;
718e3744	404	};
718e3744	405
a80beece	406	/* Nbr Connected address structure. */
d62a17ae	407	struct nbr_connected {
	408	/* Attached interface. */
	409	struct interface *ifp;
a80beece	410
d62a17ae	411	/* Address of connected network. */
d62a17ae	412	struct prefix *address;
a80beece DS	413	};
a80beece DS	414
e4529636 AS	415	/* Does the destination field contain a peer address? */
	416	#define CONNECTED_PEER(C) CHECK_FLAG((C)->flags, ZEBRA_IFA_PEER)
	417
	418	/* Prefix to insert into the RIB */
d62a17ae	419	#define CONNECTED_PREFIX(C) \
e4529636	420	(CONNECTED_PEER(C) ? (C)->destination : (C)->address)
3fb9cd6e	421
e4529636 AS	422	/* Identifying address. We guess that if there's a peer address, but the
e4529636 AS	423	local address is in the same prefix, then the local address may be unique. */
d62a17ae	424	#define CONNECTED_ID(C) \
	425	((CONNECTED_PEER(C) && !prefix_match((C)->destination, (C)->address)) \
	426	? (C)->destination \
	427	: (C)->address)
3fb9cd6e	428
718e3744	429	/* There are some interface flags which are only supported by some
	430	operating system. */
	431
	432	#ifndef IFF_NOTRAILERS
	433	#define IFF_NOTRAILERS 0x0
	434	#endif /* IFF_NOTRAILERS */
	435	#ifndef IFF_OACTIVE
	436	#define IFF_OACTIVE 0x0
	437	#endif /* IFF_OACTIVE */
	438	#ifndef IFF_SIMPLEX
	439	#define IFF_SIMPLEX 0x0
	440	#endif /* IFF_SIMPLEX */
	441	#ifndef IFF_LINK0
	442	#define IFF_LINK0 0x0
	443	#endif /* IFF_LINK0 */
	444	#ifndef IFF_LINK1
	445	#define IFF_LINK1 0x0
	446	#endif /* IFF_LINK1 */
	447	#ifndef IFF_LINK2
	448	#define IFF_LINK2 0x0
	449	#endif /* IFF_LINK2 */
4ba9b924	450	#ifndef IFF_NOXMIT
	451	#define IFF_NOXMIT 0x0
	452	#endif /* IFF_NOXMIT */
	453	#ifndef IFF_NORTEXCH
	454	#define IFF_NORTEXCH 0x0
	455	#endif /* IFF_NORTEXCH */
	456	#ifndef IFF_IPV4
	457	#define IFF_IPV4 0x0
	458	#endif /* IFF_IPV4 */
	459	#ifndef IFF_IPV6
	460	#define IFF_IPV6 0x0
	461	#endif /* IFF_IPV6 */
	462	#ifndef IFF_VIRTUAL
	463	#define IFF_VIRTUAL 0x0
	464	#endif /* IFF_VIRTUAL */
718e3744	465
718e3744	466	/* Prototypes. */
36de6e0e	467	extern int if_cmp_name_func(const char p1, const char p2);
d62a17ae	468
14fcc65c DS	469	/*
	470	* Passing in VRF_UNKNOWN is a valid thing to do, unless we
	471	* are creating a new interface.
	472	*
	473	* This is useful for vrf route-leaking. So more than anything
	474	* else think before you use VRF_UNKNOWN
	475	*/
d62a17ae	476	extern void if_update_to_new_vrf(struct interface *, vrf_id_t vrf_id);
996c9314	477	extern struct interface if_create(const char name, vrf_id_t vrf_id);
d62a17ae	478	extern struct interface *if_lookup_by_index(ifindex_t, vrf_id_t vrf_id);
	479	extern struct interface if_lookup_exact_address(void matchaddr, int family,
	480	vrf_id_t vrf_id);
	481	extern struct connected if_lookup_address(void matchaddr, int family,
	482	vrf_id_t vrf_id);
	483	extern struct interface if_lookup_prefix(struct prefix prefix,
	484	vrf_id_t vrf_id);
8736158a	485
92a57eb2	486	/* These 3 functions are to be used when the ifname argument is terminated
08dbfb69	487	by a '\0' character: */
d62a17ae	488	extern struct interface if_lookup_by_name_all_vrf(const char ifname);
d62a17ae	489	extern struct interface if_lookup_by_name(const char ifname, vrf_id_t vrf_id);
8f90d89b	490	extern struct interface if_get_by_name(const char ifname, vrf_id_t vrf_id);
ff880b78	491	extern void if_set_index(struct interface *ifp, ifindex_t ifindex);
a349198f	492
d2fc8896	493	/* Delete the interface, but do not free the structure, and leave it in the
d62a17ae	494	interface list. It is often advisable to leave the pseudo interface
d2fc8896	495	structure because there may be configuration information attached. */
d62a17ae	496	extern void if_delete_retain(struct interface *);
d2fc8896	497
	498	/* Delete and free the interface structure: calls if_delete_retain and then
	499	deletes it from the interface list and frees the structure. */
d62a17ae	500	extern void if_delete(struct interface *);
d62a17ae	501
6339042c MS	502	extern int if_is_up(const struct interface *ifp);
	503	extern int if_is_running(const struct interface *ifp);
	504	extern int if_is_operative(const struct interface *ifp);
	505	extern int if_is_no_ptm_operative(const struct interface *ifp);
	506	extern int if_is_loopback(const struct interface *ifp);
	507	extern int if_is_vrf(const struct interface *ifp);
	508	extern bool if_is_loopback_or_vrf(const struct interface *ifp);
	509	extern int if_is_broadcast(const struct interface *ifp);
	510	extern int if_is_pointopoint(const struct interface *ifp);
	511	extern int if_is_multicast(const struct interface *ifp);
f4e14fdb RW	512	struct vrf;
f4e14fdb RW	513	extern void if_terminate(struct vrf *vrf);
d62a17ae	514	extern void if_dump_all(void);
847947f2	515	extern const char *if_flag_dump(unsigned long);
d62a17ae	516	extern const char *if_link_type_str(enum zebra_link_type);
718e3744	517
d2fc8896	518	/* Please use ifindex2ifname instead of if_indextoname where possible;
	519	ifindex2ifname uses internal interface info, whereas if_indextoname must
	520	make a system call. */
d62a17ae	521	extern const char *ifindex2ifname(ifindex_t, vrf_id_t vrf_id);
d2fc8896	522
	523	/* Please use ifname2ifindex instead of if_nametoindex where possible;
	524	ifname2ifindex uses internal interface info, whereas if_nametoindex must
	525	make a system call. */
128c2be2	526	extern ifindex_t ifname2ifindex(const char *ifname, vrf_id_t vrf_id);
d2fc8896	527
718e3744	528	/* Connected address functions. */
d62a17ae	529	extern struct connected *connected_new(void);
	530	extern void connected_free(struct connected *);
	531	extern void connected_add(struct interface , struct connected );
	532	extern struct connected *
	533	connected_add_by_prefix(struct interface , struct prefix , struct prefix *);
	534	extern struct connected connected_delete_by_prefix(struct interface ,
	535	struct prefix *);
	536	extern struct connected connected_lookup_prefix(struct interface ,
	537	struct prefix *);
	538	extern struct connected connected_lookup_prefix_exact(struct interface ,
	539	struct prefix *);
	540	extern struct nbr_connected *nbr_connected_new(void);
	541	extern void nbr_connected_free(struct nbr_connected *);
	542	struct nbr_connected nbr_connected_check(struct interface , struct prefix *);
718e3744	543
16f1b9ee	544	/* link parameters */
d62a17ae	545	struct if_link_params if_link_params_get(struct interface );
d62a17ae	546	void if_link_params_free(struct interface *);
16f1b9ee	547
a4bed468 RW	548	/* Northbound. */
	549	extern void if_cmd_init(void);
	550	extern const struct frr_yang_module_info frr_interface_info;
	551
5e244469 RW	552	#ifdef __cplusplus
	553	}
	554	#endif
	555
718e3744	556	#endif /* _ZEBRA_IF_H */