[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"

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(                                                     \
			LIB_ERR_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(                                                     \
			LIB_ERR_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(                                                     \
			LIB_ERR_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(                                                     \
			LIB_ERR_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))

/* 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;
};

/* 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(char *, char *);

/*
 * 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,
					int vty);
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(struct interface *);
extern int if_is_running(struct interface *);
extern int if_is_operative(struct interface *);
extern int if_is_no_ptm_operative(struct interface *);
extern int if_is_loopback(struct interface *);
extern int if_is_vrf(struct interface *ifp);
extern int if_is_broadcast(struct interface *);
extern int if_is_pointopoint(struct interface *);
extern int if_is_multicast(struct interface *);
extern void if_cmd_init(void);
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 *);

#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 DL	29
	30	DECLARE_MTYPE(IF)
	31	DECLARE_MTYPE(CONNECTED_LABEL)
718e3744	32
8ccc7e80 TT	33	/* Interface link-layer type, if known. Derived from:
	34	*
	35	* net/if_arp.h on various platforms - Linux especially.
	36	* http://www.iana.org/assignments/arp-parameters/arp-parameters.xhtml
	37	*
	38	* Some of the more obviously defunct technologies left out.
	39	*/
	40	enum zebra_link_type {
d62a17ae	41	ZEBRA_LLT_UNKNOWN = 0,
	42	ZEBRA_LLT_ETHER,
	43	ZEBRA_LLT_EETHER,
	44	ZEBRA_LLT_AX25,
	45	ZEBRA_LLT_PRONET,
	46	ZEBRA_LLT_IEEE802,
	47	ZEBRA_LLT_ARCNET,
	48	ZEBRA_LLT_APPLETLK,
	49	ZEBRA_LLT_DLCI,
	50	ZEBRA_LLT_ATM,
	51	ZEBRA_LLT_METRICOM,
	52	ZEBRA_LLT_IEEE1394,
	53	ZEBRA_LLT_EUI64,
	54	ZEBRA_LLT_INFINIBAND,
	55	ZEBRA_LLT_SLIP,
	56	ZEBRA_LLT_CSLIP,
	57	ZEBRA_LLT_SLIP6,
	58	ZEBRA_LLT_CSLIP6,
	59	ZEBRA_LLT_RSRVD,
	60	ZEBRA_LLT_ADAPT,
	61	ZEBRA_LLT_ROSE,
	62	ZEBRA_LLT_X25,
	63	ZEBRA_LLT_PPP,
	64	ZEBRA_LLT_CHDLC,
	65	ZEBRA_LLT_LAPB,
	66	ZEBRA_LLT_RAWHDLC,
	67	ZEBRA_LLT_IPIP,
	68	ZEBRA_LLT_IPIP6,
	69	ZEBRA_LLT_FRAD,
	70	ZEBRA_LLT_SKIP,
	71	ZEBRA_LLT_LOOPBACK,
	72	ZEBRA_LLT_LOCALTLK,
	73	ZEBRA_LLT_FDDI,
	74	ZEBRA_LLT_SIT,
	75	ZEBRA_LLT_IPDDP,
	76	ZEBRA_LLT_IPGRE,
	77	ZEBRA_LLT_IP6GRE,
	78	ZEBRA_LLT_PIMREG,
	79	ZEBRA_LLT_HIPPI,
	80	ZEBRA_LLT_ECONET,
	81	ZEBRA_LLT_IRDA,
	82	ZEBRA_LLT_FCPP,
	83	ZEBRA_LLT_FCAL,
	84	ZEBRA_LLT_FCPL,
	85	ZEBRA_LLT_FCFABRIC,
	86	ZEBRA_LLT_IEEE802_TR,
	87	ZEBRA_LLT_IEEE80211,
	88	ZEBRA_LLT_IEEE80211_RADIOTAP,
	89	ZEBRA_LLT_IEEE802154,
	90	ZEBRA_LLT_IEEE802154_PHY,
8ccc7e80 TT	91	};
8ccc7e80 TT	92
718e3744	93	/*
	94	Interface name length.
	95
	96	Linux define value in /usr/include/linux/if.h.
	97	#define IFNAMSIZ 16
	98
	99	FreeBSD define value in /usr/include/net/if.h.
	100	#define IFNAMSIZ 16
	101	*/
	102
	103	#define INTERFACE_NAMSIZ 20
	104	#define INTERFACE_HWADDR_MAX 20
	105
b892f1dd PJ	106	typedef signed int ifindex_t;
b892f1dd PJ	107
718e3744	108	#ifdef HAVE_PROC_NET_DEV
d62a17ae	109	struct if_stats {
	110	unsigned long rx_packets; /* total packets received */
	111	unsigned long tx_packets; /* total packets transmitted */
	112	unsigned long rx_bytes; /* total bytes received */
	113	unsigned long tx_bytes; /* total bytes transmitted */
	114	unsigned long rx_errors; /* bad packets received */
	115	unsigned long tx_errors; /* packet transmit problems */
	116	unsigned long rx_dropped; /* no space in linux buffers */
	117	unsigned long tx_dropped; /* no space available in linux */
	118	unsigned long rx_multicast; /* multicast packets received */
	119	unsigned long rx_compressed;
	120	unsigned long tx_compressed;
	121	unsigned long collisions;
	122
	123	/* detailed rx_errors: */
	124	unsigned long rx_length_errors;
	125	unsigned long rx_over_errors; /* receiver ring buff overflow */
	126	unsigned long rx_crc_errors; /* recved pkt with crc error */
	127	unsigned long rx_frame_errors; /* recv'd frame alignment error */
	128	unsigned long rx_fifo_errors; /* recv'r fifo overrun */
	129	unsigned long rx_missed_errors; /* receiver missed packet */
	130	/* detailed tx_errors */
	131	unsigned long tx_aborted_errors;
	132	unsigned long tx_carrier_errors;
	133	unsigned long tx_fifo_errors;
	134	unsigned long tx_heartbeat_errors;
	135	unsigned long tx_window_errors;
718e3744	136	};
	137	#endif /* HAVE_PROC_NET_DEV */
	138
16f1b9ee OD	139	/* Here are "non-official" architectural constants. */
	140	#define TE_EXT_MASK 0x0FFFFFFF
	141	#define TE_EXT_ANORMAL 0x80000000
	142	#define LOSS_PRECISION 0.000003
	143	#define TE_KILO_BIT 1000
	144	#define TE_BYTE 8
	145	#define DEFAULT_BANDWIDTH 10000
	146	#define MAX_CLASS_TYPE 8
	147	#define MAX_PKT_LOSS 50.331642
	148
daf0a4d2 OD	149	/*
	150	* Link Parameters Status:
	151	* equal to 0: unset
	152	* different from 0: set
	153	*/
16f1b9ee	154	#define LP_UNSET 0x0000
daf0a4d2	155	#define LP_TE_METRIC 0x0001
16f1b9ee OD	156	#define LP_MAX_BW 0x0002
	157	#define LP_MAX_RSV_BW 0x0004
	158	#define LP_UNRSV_BW 0x0008
	159	#define LP_ADM_GRP 0x0010
	160	#define LP_RMT_AS 0x0020
	161	#define LP_DELAY 0x0040
	162	#define LP_MM_DELAY 0x0080
	163	#define LP_DELAY_VAR 0x0100
	164	#define LP_PKT_LOSS 0x0200
	165	#define LP_RES_BW 0x0400
	166	#define LP_AVA_BW 0x0800
	167	#define LP_USE_BW 0x1000
	168
	169	#define IS_PARAM_UNSET(lp, st) !(lp->lp_status & st)
	170	#define IS_PARAM_SET(lp, st) (lp->lp_status & st)
	171	#define IS_LINK_PARAMS_SET(lp) (lp->lp_status != LP_UNSET)
	172
	173	#define SET_PARAM(lp, st) (lp->lp_status) \|= (st)
	174	#define UNSET_PARAM(lp, st) (lp->lp_status) &= ~(st)
	175	#define RESET_LINK_PARAM(lp) (lp->lp_status = LP_UNSET)
	176
	177	/* Link Parameters for Traffic Engineering */
	178	struct if_link_params {
d7c0a89a QY	179	uint32_t lp_status; /* Status of Link Parameters: */
d7c0a89a QY	180	uint32_t te_metric; /* Traffic Engineering metric */
d62a17ae	181	float default_bw;
	182	float max_bw; /* Maximum Bandwidth */
	183	float max_rsv_bw; /* Maximum Reservable Bandwidth */
	184	float unrsv_bw[MAX_CLASS_TYPE]; /* Unreserved Bandwidth per Class Type
	185	(8) */
d7c0a89a QY	186	uint32_t admin_grp; /* Administrative group */
d7c0a89a QY	187	uint32_t rmt_as; /* Remote AS number */
d62a17ae	188	struct in_addr rmt_ip; /* Remote IP address */
d7c0a89a QY	189	uint32_t av_delay; /* Link Average Delay */
	190	uint32_t min_delay; /* Link Min Delay */
	191	uint32_t max_delay; /* Link Max Delay */
	192	uint32_t delay_var; /* Link Delay Variation */
d62a17ae	193	float pkt_loss; /* Link Packet Loss */
	194	float res_bw; /* Residual Bandwidth */
	195	float ava_bw; /* Available Bandwidth */
	196	float use_bw; /* Utilized Bandwidth */
16f1b9ee OD	197	};
	198
	199	#define INTERFACE_LINK_PARAMS_SIZE sizeof(struct if_link_params)
	200	#define HAS_LINK_PARAMS(ifp) ((ifp)->link_params != NULL)
	201
718e3744	202	/* Interface structure */
d62a17ae	203	struct interface {
ff880b78	204	RB_ENTRY(interface) name_entry, index_entry;
f4e14fdb	205
d62a17ae	206	/* Interface name. This should probably never be changed after the
	207	interface is created, because the configuration info for this
	208	interface
	209	is associated with this structure. For that reason, the interface
	210	should also never be deleted (to avoid losing configuration info).
	211	To delete, just set ifindex to IFINDEX_INTERNAL to indicate that the
	212	interface does not exist in the kernel.
	213	*/
bcc24579	214	char name[INTERFACE_NAMSIZ];
d62a17ae	215
d62a17ae	216	/* Interface index (should be IFINDEX_INTERNAL for non-kernel or
ff880b78 RW	217	deleted interfaces).
	218	WARNING: the ifindex needs to be changed using the if_set_index()
	219	function. Failure to respect this will cause corruption in the data
	220	structure used to store the interfaces and if_lookup_by_index() will
	221	not work as expected.
	222	*/
d62a17ae	223	ifindex_t ifindex;
d2fc8896	224	#define IFINDEX_INTERNAL 0
718e3744	225
d62a17ae	226	/* Zebra internal interface status */
d7c0a89a	227	uint8_t status;
718e3744	228	#define ZEBRA_INTERFACE_ACTIVE (1 << 0)
718e3744	229	#define ZEBRA_INTERFACE_SUB (1 << 1)
2e3b2e47	230	#define ZEBRA_INTERFACE_LINKDETECTION (1 << 2)
c23af4d3	231	#define ZEBRA_INTERFACE_VRF_LOOPBACK (1 << 3)
525c1839	232
d62a17ae	233	/* Interface flags. */
d62a17ae	234	uint64_t flags;
718e3744	235
d62a17ae	236	/* Interface metric */
d62a17ae	237	uint32_t metric;
718e3744	238
d62a17ae	239	/* Interface Speed in Mb/s */
d62a17ae	240	uint32_t speed;
2d7f0d76	241
d62a17ae	242	/* Interface MTU. */
	243	unsigned int mtu; /* IPv4 MTU */
	244	unsigned int
	245	mtu6; /* IPv6 MTU - probably, but not neccessarily same as mtu
9d303b37	246	*/
718e3744	247
d62a17ae	248	/* Link-layer information and hardware address */
d62a17ae	249	enum zebra_link_type ll_type;
d7c0a89a	250	uint8_t hw_addr[INTERFACE_HWADDR_MAX];
d62a17ae	251	int hw_addr_len;
718e3744	252
d62a17ae	253	/* interface bandwidth, kbits */
d62a17ae	254	unsigned int bandwidth;
16f1b9ee	255
d62a17ae	256	/* Link parameters for Traffic Engineering */
d62a17ae	257	struct if_link_params *link_params;
718e3744	258
d62a17ae	259	/* description of the interface. */
d62a17ae	260	char *desc;
718e3744	261
d62a17ae	262	/* Distribute list. */
	263	void *distribute_in;
	264	void *distribute_out;
718e3744	265
d62a17ae	266	/* Connected address list. */
d62a17ae	267	struct list *connected;
a80beece	268
d62a17ae	269	/* Neighbor connected address list. */
d62a17ae	270	struct list *nbr_connected;
718e3744	271
d62a17ae	272	/* Daemon specific interface data pointer. */
d62a17ae	273	void *info;
244c1cdc	274
d62a17ae	275	char ptm_enable; /* Should we look at ptm_status ? */
	276	char ptm_status;
	277
	278	/* Statistics fileds. */
718e3744	279	#ifdef HAVE_PROC_NET_DEV
d62a17ae	280	struct if_stats stats;
d62a17ae	281	#endif /* HAVE_PROC_NET_DEV */
718e3744	282	#ifdef HAVE_NET_RT_IFLIST
d62a17ae	283	struct if_data stats;
718e3744	284	#endif /* HAVE_NET_RT_IFLIST */
3968dbf8	285
d62a17ae	286	struct route_node *node;
d62a17ae	287	vrf_id_t vrf_id;
e80e7cce	288
d62a17ae	289	QOBJ_FIELDS
718e3744	290	};
0c74bbe0	291
f4e14fdb RW	292	RB_HEAD(if_name_head, interface);
f4e14fdb RW	293	RB_PROTOTYPE(if_name_head, interface, name_entry, if_cmp_func);
ff880b78 RW	294	RB_HEAD(if_index_head, interface);
ff880b78 RW	295	RB_PROTOTYPE(if_index_head, interface, index_entry, if_cmp_func);
e80e7cce	296	DECLARE_QOBJ_TYPE(interface)
718e3744	297
ff880b78 RW	298	#define IFNAME_RB_INSERT(vrf, ifp) \
ff880b78 RW	299	if (RB_INSERT(if_name_head, &vrf->ifaces_by_name, (ifp))) \
af4c2728	300	flog_err( \
4d43f68a	301	LIB_ERR_INTERFACE, \
ff880b78 RW	302	"%s(%s): corruption detected -- interface with this " \
	303	"name exists already in VRF %u!", \
	304	__func__, (ifp)->name, (ifp)->vrf_id);
	305
	306	#define IFNAME_RB_REMOVE(vrf, ifp) \
	307	if (RB_REMOVE(if_name_head, &vrf->ifaces_by_name, (ifp)) == NULL) \
af4c2728	308	flog_err( \
4d43f68a	309	LIB_ERR_INTERFACE, \
ff880b78 RW	310	"%s(%s): corruption detected -- interface with this " \
	311	"name doesn't exist in VRF %u!", \
	312	__func__, (ifp)->name, (ifp)->vrf_id);
	313
	314	#define IFINDEX_RB_INSERT(vrf, ifp) \
	315	if (RB_INSERT(if_index_head, &vrf->ifaces_by_index, (ifp))) \
af4c2728	316	flog_err( \
4d43f68a	317	LIB_ERR_INTERFACE, \
ff880b78 RW	318	"%s(%u): corruption detected -- interface with this " \
	319	"ifindex exists already in VRF %u!", \
	320	__func__, (ifp)->ifindex, (ifp)->vrf_id);
	321
	322	#define IFINDEX_RB_REMOVE(vrf, ifp) \
	323	if (RB_REMOVE(if_index_head, &vrf->ifaces_by_index, (ifp)) == NULL) \
af4c2728	324	flog_err( \
4d43f68a	325	LIB_ERR_INTERFACE, \
ff880b78 RW	326	"%s(%u): corruption detected -- interface with this " \
	327	"ifindex doesn't exist in VRF %u!", \
	328	__func__, (ifp)->ifindex, (ifp)->vrf_id);
	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
718e3744	348	/* Connected address structure. */
d62a17ae	349	struct connected {
	350	/* Attached interface. */
	351	struct interface *ifp;
718e3744	352
d62a17ae	353	/* Flags for configuration. */
d7c0a89a	354	uint8_t conf;
718e3744	355	#define ZEBRA_IFC_REAL (1 << 0)
718e3744	356	#define ZEBRA_IFC_CONFIGURED (1 << 1)
f7f740fe	357	#define ZEBRA_IFC_QUEUED (1 << 2)
d62a17ae	358	/*
	359	The ZEBRA_IFC_REAL flag should be set if and only if this address
	360	exists in the kernel and is actually usable. (A case where it exists
	361	but
	362	is not yet usable would be IPv6 with DAD)
	363	The ZEBRA_IFC_CONFIGURED flag should be set if and only if this
	364	address
	365	was configured by the user from inside quagga.
	366	The ZEBRA_IFC_QUEUED flag should be set if and only if the address
	367	exists
	368	in the kernel. It may and should be set although the address might
	369	not be
	370	usable yet. (compare with ZEBRA_IFC_REAL)
	371	*/
	372
	373	/* Flags for connected address. */
d7c0a89a	374	uint8_t flags;
e4529636 AS	375	#define ZEBRA_IFA_SECONDARY (1 << 0)
e4529636 AS	376	#define ZEBRA_IFA_PEER (1 << 1)
525c1839	377	#define ZEBRA_IFA_UNNUMBERED (1 << 2)
d62a17ae	378	/* N.B. the ZEBRA_IFA_PEER flag should be set if and only if
	379	a peer address has been configured. If this flag is set,
	380	the destination field must contain the peer address.
	381	Otherwise, if this flag is not set, the destination address
	382	will either contain a broadcast address or be NULL.
	383	*/
	384
	385	/* Address of connected network. */
	386	struct prefix *address;
	387
	388	/* Peer or Broadcast address, depending on whether ZEBRA_IFA_PEER is
	389	set.
	390	Note: destination may be NULL if ZEBRA_IFA_PEER is not set. */
	391	struct prefix *destination;
	392
	393	/* Label for Linux 2.2.X and upper. */
	394	char *label;
718e3744	395	};
718e3744	396
a80beece	397	/* Nbr Connected address structure. */
d62a17ae	398	struct nbr_connected {
	399	/* Attached interface. */
	400	struct interface *ifp;
a80beece	401
d62a17ae	402	/* Address of connected network. */
d62a17ae	403	struct prefix *address;
a80beece DS	404	};
a80beece DS	405
e4529636 AS	406	/* Does the destination field contain a peer address? */
	407	#define CONNECTED_PEER(C) CHECK_FLAG((C)->flags, ZEBRA_IFA_PEER)
	408
	409	/* Prefix to insert into the RIB */
d62a17ae	410	#define CONNECTED_PREFIX(C) \
e4529636	411	(CONNECTED_PEER(C) ? (C)->destination : (C)->address)
3fb9cd6e	412
e4529636 AS	413	/* Identifying address. We guess that if there's a peer address, but the
e4529636 AS	414	local address is in the same prefix, then the local address may be unique. */
d62a17ae	415	#define CONNECTED_ID(C) \
	416	((CONNECTED_PEER(C) && !prefix_match((C)->destination, (C)->address)) \
	417	? (C)->destination \
	418	: (C)->address)
3fb9cd6e	419
718e3744	420	/* There are some interface flags which are only supported by some
	421	operating system. */
	422
	423	#ifndef IFF_NOTRAILERS
	424	#define IFF_NOTRAILERS 0x0
	425	#endif /* IFF_NOTRAILERS */
	426	#ifndef IFF_OACTIVE
	427	#define IFF_OACTIVE 0x0
	428	#endif /* IFF_OACTIVE */
	429	#ifndef IFF_SIMPLEX
	430	#define IFF_SIMPLEX 0x0
	431	#endif /* IFF_SIMPLEX */
	432	#ifndef IFF_LINK0
	433	#define IFF_LINK0 0x0
	434	#endif /* IFF_LINK0 */
	435	#ifndef IFF_LINK1
	436	#define IFF_LINK1 0x0
	437	#endif /* IFF_LINK1 */
	438	#ifndef IFF_LINK2
	439	#define IFF_LINK2 0x0
	440	#endif /* IFF_LINK2 */
4ba9b924	441	#ifndef IFF_NOXMIT
	442	#define IFF_NOXMIT 0x0
	443	#endif /* IFF_NOXMIT */
	444	#ifndef IFF_NORTEXCH
	445	#define IFF_NORTEXCH 0x0
	446	#endif /* IFF_NORTEXCH */
	447	#ifndef IFF_IPV4
	448	#define IFF_IPV4 0x0
	449	#endif /* IFF_IPV4 */
	450	#ifndef IFF_IPV6
	451	#define IFF_IPV6 0x0
	452	#endif /* IFF_IPV6 */
	453	#ifndef IFF_VIRTUAL
	454	#define IFF_VIRTUAL 0x0
	455	#endif /* IFF_VIRTUAL */
718e3744	456
718e3744	457	/* Prototypes. */
d62a17ae	458	extern int if_cmp_name_func(char , char );
d62a17ae	459
14fcc65c DS	460	/*
	461	* Passing in VRF_UNKNOWN is a valid thing to do, unless we
	462	* are creating a new interface.
	463	*
	464	* This is useful for vrf route-leaking. So more than anything
	465	* else think before you use VRF_UNKNOWN
	466	*/
d62a17ae	467	extern void if_update_to_new_vrf(struct interface *, vrf_id_t vrf_id);
996c9314	468	extern struct interface if_create(const char name, vrf_id_t vrf_id);
d62a17ae	469	extern struct interface *if_lookup_by_index(ifindex_t, vrf_id_t vrf_id);
	470	extern struct interface if_lookup_exact_address(void matchaddr, int family,
	471	vrf_id_t vrf_id);
	472	extern struct connected if_lookup_address(void matchaddr, int family,
	473	vrf_id_t vrf_id);
	474	extern struct interface if_lookup_prefix(struct prefix prefix,
	475	vrf_id_t vrf_id);
8736158a	476
92a57eb2	477	/* These 3 functions are to be used when the ifname argument is terminated
08dbfb69	478	by a '\0' character: */
d62a17ae	479	extern struct interface if_lookup_by_name_all_vrf(const char ifname);
d62a17ae	480	extern struct interface if_lookup_by_name(const char ifname, vrf_id_t vrf_id);
bcc24579 RW	481	extern struct interface if_get_by_name(const char ifname, vrf_id_t vrf_id,
bcc24579 RW	482	int vty);
ff880b78	483	extern void if_set_index(struct interface *ifp, ifindex_t ifindex);
a349198f	484
d2fc8896	485	/* Delete the interface, but do not free the structure, and leave it in the
d62a17ae	486	interface list. It is often advisable to leave the pseudo interface
d2fc8896	487	structure because there may be configuration information attached. */
d62a17ae	488	extern void if_delete_retain(struct interface *);
d2fc8896	489
	490	/* Delete and free the interface structure: calls if_delete_retain and then
	491	deletes it from the interface list and frees the structure. */
d62a17ae	492	extern void if_delete(struct interface *);
	493
	494	extern int if_is_up(struct interface *);
	495	extern int if_is_running(struct interface *);
	496	extern int if_is_operative(struct interface *);
	497	extern int if_is_no_ptm_operative(struct interface *);
	498	extern int if_is_loopback(struct interface *);
0c74bbe0	499	extern int if_is_vrf(struct interface *ifp);
d62a17ae	500	extern int if_is_broadcast(struct interface *);
	501	extern int if_is_pointopoint(struct interface *);
	502	extern int if_is_multicast(struct interface *);
d62a17ae	503	extern void if_cmd_init(void);
f4e14fdb RW	504	struct vrf;
f4e14fdb RW	505	extern void if_terminate(struct vrf *vrf);
d62a17ae	506	extern void if_dump_all(void);
847947f2	507	extern const char *if_flag_dump(unsigned long);
d62a17ae	508	extern const char *if_link_type_str(enum zebra_link_type);
718e3744	509
d2fc8896	510	/* Please use ifindex2ifname instead of if_indextoname where possible;
	511	ifindex2ifname uses internal interface info, whereas if_indextoname must
	512	make a system call. */
d62a17ae	513	extern const char *ifindex2ifname(ifindex_t, vrf_id_t vrf_id);
d2fc8896	514
	515	/* Please use ifname2ifindex instead of if_nametoindex where possible;
	516	ifname2ifindex uses internal interface info, whereas if_nametoindex must
	517	make a system call. */
128c2be2	518	extern ifindex_t ifname2ifindex(const char *ifname, vrf_id_t vrf_id);
d2fc8896	519
718e3744	520	/* Connected address functions. */
d62a17ae	521	extern struct connected *connected_new(void);
	522	extern void connected_free(struct connected *);
	523	extern void connected_add(struct interface , struct connected );
	524	extern struct connected *
	525	connected_add_by_prefix(struct interface , struct prefix , struct prefix *);
	526	extern struct connected connected_delete_by_prefix(struct interface ,
	527	struct prefix *);
	528	extern struct connected connected_lookup_prefix(struct interface ,
	529	struct prefix *);
	530	extern struct connected connected_lookup_prefix_exact(struct interface ,
	531	struct prefix *);
	532	extern struct nbr_connected *nbr_connected_new(void);
	533	extern void nbr_connected_free(struct nbr_connected *);
	534	struct nbr_connected nbr_connected_check(struct interface , struct prefix *);
718e3744	535
16f1b9ee	536	/* link parameters */
d62a17ae	537	struct if_link_params if_link_params_get(struct interface );
d62a17ae	538	void if_link_params_free(struct interface *);
16f1b9ee	539
718e3744	540	#endif /* _ZEBRA_IF_H */