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2 * Copyright (c) 1982, 1986, 1989, 1993
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6 * modification, are permitted provided that the following conditions
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15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)if.h 8.1 (Berkeley) 6/10/93
34 * $Id: if.h,v 1.1.1.1 2006/05/30 06:12:41 hhzhou Exp $
41 * <net/if.h> does not depend on <sys/time.h> on most other systems. This
42 * helps userland compatability. (struct timeval ifi_lastchange)
49 * Structure describing information about an interface
50 * which may be of interest to management entities.
53 /* generic interface information */
54 u_char ifi_type
; /* ethernet, tokenring, etc */
55 u_char ifi_physical
; /* e.g., AUI, Thinnet, 10base-T, etc */
56 u_char ifi_addrlen
; /* media address length */
57 u_char ifi_hdrlen
; /* media header length */
58 u_char ifi_recvquota
; /* polling quota for receive intrs */
59 u_char ifi_xmitquota
; /* polling quota for xmit intrs */
60 u_long ifi_mtu
; /* maximum transmission unit */
61 u_long ifi_metric
; /* routing metric (external only) */
62 u_long ifi_baudrate
; /* linespeed */
63 /* volatile statistics */
64 u_long ifi_ipackets
; /* packets received on interface */
65 u_long ifi_ierrors
; /* input errors on interface */
66 u_long ifi_opackets
; /* packets sent on interface */
67 u_long ifi_oerrors
; /* output errors on interface */
68 u_long ifi_collisions
; /* collisions on csma interfaces */
69 u_long ifi_ibytes
; /* total number of octets received */
70 u_long ifi_obytes
; /* total number of octets sent */
71 u_long ifi_imcasts
; /* packets received via multicast */
72 u_long ifi_omcasts
; /* packets sent via multicast */
73 u_long ifi_iqdrops
; /* dropped on input, this interface */
74 u_long ifi_noproto
; /* destined for unsupported protocol */
75 u_long ifi_recvtiming
; /* usec spent receiving when timing */
76 u_long ifi_xmittiming
; /* usec spent xmitting when timing */
77 struct timeval ifi_lastchange
; /* time of last administrative change */
80 #define IFF_UP 0x1 /* interface is up */
81 #define IFF_BROADCAST 0x2 /* broadcast address valid */
82 #define IFF_DEBUG 0x4 /* turn on debugging */
83 #define IFF_LOOPBACK 0x8 /* is a loopback net */
84 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */
85 /*#define IFF_NOTRAILERS 0x20 * obsolete: avoid use of trailers */
86 #define IFF_RUNNING 0x40 /* resources allocated */
87 #define IFF_NOARP 0x80 /* no address resolution protocol */
88 #define IFF_PROMISC 0x100 /* receive all packets */
89 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */
90 #define IFF_OACTIVE 0x400 /* transmission in progress */
91 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */
92 #define IFF_LINK0 0x1000 /* per link layer defined bit */
93 #define IFF_LINK1 0x2000 /* per link layer defined bit */
94 #define IFF_LINK2 0x4000 /* per link layer defined bit */
95 #define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */
96 #define IFF_MULTICAST 0x8000 /* supports multicast */
98 /* flags set internally only: */
99 #define IFF_CANTCHANGE \
100 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
101 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI)
103 #define IFQ_MAXLEN 50
104 #define IFNET_SLOWHZ 1 /* granularity is 1 second */
107 * Message format for use in obtaining information about interfaces
108 * from getkerninfo and the routing socket
111 u_short ifm_msglen
; /* to skip over non-understood messages */
112 u_char ifm_version
; /* future binary compatability */
113 u_char ifm_type
; /* message type */
114 int ifm_addrs
; /* like rtm_addrs */
115 int ifm_flags
; /* value of if_flags */
116 u_short ifm_index
; /* index for associated ifp */
117 struct if_data ifm_data
;/* statistics and other data about if */
121 * Message format for use in obtaining information about interface addresses
122 * from getkerninfo and the routing socket
125 u_short ifam_msglen
; /* to skip over non-understood messages */
126 u_char ifam_version
; /* future binary compatability */
127 u_char ifam_type
; /* message type */
128 int ifam_addrs
; /* like rtm_addrs */
129 int ifam_flags
; /* value of ifa_flags */
130 u_short ifam_index
; /* index for associated ifp */
131 int ifam_metric
; /* value of ifa_metric */
135 * Message format for use in obtaining information about multicast addresses
136 * from the routing socket
139 u_short ifmam_msglen
; /* to skip over non-understood messages */
140 u_char ifmam_version
; /* future binary compatability */
141 u_char ifmam_type
; /* message type */
142 int ifmam_addrs
; /* like rtm_addrs */
143 int ifmam_flags
; /* value of ifa_flags */
144 u_short ifmam_index
; /* index for associated ifp */
148 * Interface request structure used for socket
149 * ioctl's. All interface ioctl's must have parameter
150 * definitions which begin with ifr_name. The
151 * remainder may be interface specific.
155 char ifr_name
[IFNAMSIZ
]; /* if name, e.g. "en0" */
157 struct sockaddr ifru_addr
;
158 struct sockaddr ifru_dstaddr
;
159 struct sockaddr ifru_broadaddr
;
167 #define ifr_addr ifr_ifru.ifru_addr /* address */
168 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
169 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
170 #define ifr_flags ifr_ifru.ifru_flags /* flags */
171 #define ifr_metric ifr_ifru.ifru_metric /* metric */
172 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
173 #define ifr_phys ifr_ifru.ifru_phys /* physical wire */
174 #define ifr_media ifr_ifru.ifru_media /* physical media */
175 #define ifr_data ifr_ifru.ifru_data /* for use by interface */
178 #define _SIZEOF_ADDR_IFREQ(ifr) \
179 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \
180 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \
181 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq))
184 char ifra_name
[IFNAMSIZ
]; /* if name, e.g. "en0" */
185 struct sockaddr ifra_addr
;
186 struct sockaddr ifra_broadaddr
;
187 struct sockaddr ifra_mask
;
191 char ifm_name
[IFNAMSIZ
]; /* if name, e.g. "en0" */
192 int ifm_current
; /* current media options */
193 int ifm_mask
; /* don't care mask */
194 int ifm_status
; /* media status */
195 int ifm_active
; /* active options */
196 int ifm_count
; /* # entries in ifm_ulist array */
197 int *ifm_ulist
; /* media words */
200 * Structure used in SIOCGIFCONF request.
201 * Used to retrieve interface configuration
202 * for machine (useful for programs which
203 * must know all networks accessible).
206 int ifc_len
; /* size of associated buffer */
209 struct ifreq
*ifcu_req
;
211 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
212 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
216 #ifdef MALLOC_DECLARE
217 MALLOC_DECLARE(M_IFADDR
);
218 MALLOC_DECLARE(M_IFMADDR
);
222 /* XXX - this should go away soon */
224 #include <net/if_var.h>
227 #endif /* !_NET_IF_H_ */