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/* 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 GNU Zebra; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _ZEBRA_IF_H
#define _ZEBRA_IF_H
#include "linklist.h"
/*
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
/* Internal If indexes start at 0xFFFFFFFF and go down to 1 greater
than this */
#define IFINDEX_INTERNBASE 0x80000000
#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 */
/* Interface structure */
struct interface
{
/* Interface name. */
char name[INTERFACE_NAMSIZ + 1];
/* Interface index. */
unsigned int ifindex;
/* Zebra internal interface status */
u_char status;
#define ZEBRA_INTERFACE_ACTIVE (1 << 0)
#define ZEBRA_INTERFACE_SUB (1 << 1)
#define ZEBRA_INTERFACE_LINKDETECTION (1 << 2)
/* Interface flags. */
unsigned long flags;
/* Interface metric */
int metric;
/* Interface MTU. */
int mtu; /* IPv4 MTU */
int mtu6; /* IPv6 MTU - probably, but not neccessarily same as mtu */
/* Hardware address. */
#ifdef HAVE_SOCKADDR_DL
struct sockaddr_dl sdl;
#else
unsigned short hw_type;
u_char hw_addr[INTERFACE_HWADDR_MAX];
int hw_addr_len;
#endif /* HAVE_SOCKADDR_DL */
/* interface bandwidth, kbits */
unsigned int bandwidth;
/* description of the interface. */
char *desc;
/* Distribute list. */
void *distribute_in;
void *distribute_out;
/* Connected address list. */
list connected;
/* Daemon specific interface data pointer. */
void *info;
/* 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 */
};
/* Connected address structure. */
struct connected
{
/* Attached interface. */
struct interface *ifp;
/* Flags for configuration. */
u_char conf;
#define ZEBRA_IFC_REAL (1 << 0)
#define ZEBRA_IFC_CONFIGURED (1 << 1)
/* Flags for connected address. */
u_char flags;
#define ZEBRA_IFA_SECONDARY (1 << 0)
/* Address of connected network. */
struct prefix *address;
struct prefix *destination;
/* Label for Linux 2.2.X and upper. */
char *label;
};
/* Interface hook sort. */
#define IF_NEW_HOOK 0
#define IF_DELETE_HOOK 1
/* 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 */
/* Prototypes. */
int if_cmp_func (struct interface *, struct interface *);
struct interface *if_new (void);
struct interface *if_create (char *name, int namelen);
struct interface *if_lookup_by_index (unsigned int);
struct interface *if_lookup_by_name (char *);
struct interface *if_lookup_exact_address (struct in_addr);
struct interface *if_lookup_address (struct in_addr);
struct interface *if_get_by_name (char *);
void if_delete (struct interface *);
int if_is_up (struct interface *);
int if_is_running (struct interface *);
int if_is_operative (struct interface *);
int if_is_loopback (struct interface *);
int if_is_broadcast (struct interface *);
int if_is_pointopoint (struct interface *);
int if_is_multicast (struct interface *);
void if_add_hook (int, int (*)(struct interface *));
void if_init ();
void if_dump_all ();
char *ifindex2ifname (unsigned int);
/* Connected address functions. */
struct connected *connected_new ();
void connected_free (struct connected *);
void connected_add (struct interface *, struct connected *);
struct connected *connected_add_by_prefix (struct interface *,
struct prefix *,
struct prefix *);
struct connected *connected_delete_by_prefix (struct interface *,
struct prefix *);
struct connected *connected_lookup_address (struct interface *,
struct in_addr);
#ifndef HAVE_IF_NAMETOINDEX
unsigned int if_nametoindex (const char *);
#endif
#ifndef HAVE_IF_INDEXTONAME
char *if_indextoname (unsigned int, char *);
#endif
/* Exported variables. */
extern list iflist;
extern struct cmd_element interface_desc_cmd;
extern struct cmd_element no_interface_desc_cmd;
extern struct cmd_element interface_cmd;
extern struct cmd_element no_interface_cmd;
extern struct cmd_element interface_pseudo_cmd;
extern struct cmd_element no_interface_pseudo_cmd;
#endif /* _ZEBRA_IF_H */
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