if.h
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上传日期:2009-11-15
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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)
-
- /* Interface flags. */
- unsigned long flags;
- /* Interface metric */
- int metric;
- /* Interface MTU. */
- int 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. */
- struct interface *if_new (void);
- struct interface *if_create (void);
- 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_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_delete_by_prefix (struct interface *, struct prefix *);
- int ifc_pointopoint (struct connected *);
- #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 interface_pseudo_cmd;
- extern struct cmd_element no_interface_pseudo_cmd;
- #endif /* _ZEBRA_IF_H */