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33 * @(#)if.h 8.1 (Berkeley) 6/10/93
41 #include <sys/queue.h>
45 * <net/if.h> does not depend on <sys/time.h> on most other systems. This
46 * helps userland compatibility. (struct timeval ifi_lastchange)
55 * Length of interface external name, including terminating '\0'.
56 * Note: this is the same size as a generic device's external name.
59 #define IF_NAMESIZE IFNAMSIZ
60 #define IF_MAXUNIT 0x7fff /* ifp->if_unit is only 15 bits */
64 * Structure describing a `cloning' interface.
67 LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */
68 const char *ifc_name; /* name of device, e.g. `gif' */
69 size_t ifc_namelen; /* length of name */
70 int ifc_minifs; /* minimum number of interfaces */
71 int ifc_maxunit; /* maximum unit number */
72 unsigned char *ifc_units; /* bitmap to handle units */
73 int ifc_bmlen; /* bitmap length */
75 int (*ifc_create)(struct if_clone *, int);
76 void (*ifc_destroy)(struct ifnet *);
79 #define IF_CLONE_INITIALIZER(name, create, destroy, minifs, maxunit) \
80 { { 0 }, name, sizeof(name) - 1, minifs, maxunit, NULL, 0, create, destroy }
84 * Structure used to query names of interface cloners.
88 int ifcr_total; /* total cloners (out) */
89 int ifcr_count; /* room for this many in user buffer */
90 char *ifcr_buffer; /* buffer for cloner names */
94 * Structure describing information about an interface
95 * which may be of interest to management entities.
98 /* generic interface information */
99 u_char ifi_type; /* ethernet, tokenring, etc */
100 u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */
101 u_char ifi_addrlen; /* media address length */
102 u_char ifi_hdrlen; /* media header length */
103 u_char ifi_recvquota; /* polling quota for receive intrs */
104 u_char ifi_xmitquota; /* polling quota for xmit intrs */
105 u_long ifi_mtu; /* maximum transmission unit */
106 u_long ifi_metric; /* routing metric (external only) */
107 u_long ifi_baudrate; /* linespeed */
108 /* volatile statistics */
109 u_long ifi_ipackets; /* packets received on interface */
110 u_long ifi_ierrors; /* input errors on interface */
111 u_long ifi_opackets; /* packets sent on interface */
112 u_long ifi_oerrors; /* output errors on interface */
113 u_long ifi_collisions; /* collisions on csma interfaces */
114 u_long ifi_ibytes; /* total number of octets received */
115 u_long ifi_obytes; /* total number of octets sent */
116 u_long ifi_imcasts; /* packets received via multicast */
117 u_long ifi_omcasts; /* packets sent via multicast */
118 u_long ifi_iqdrops; /* dropped on input, this interface */
119 u_long ifi_noproto; /* destined for unsupported protocol */
120 u_long ifi_hwassist; /* HW offload capabilities */
121 u_long ifi_unused; /* XXX was ifi_xmittiming */
122 struct timeval ifi_lastchange; /* time of last administrative change */
125 #define IFF_UP 0x1 /* interface is up */
126 #define IFF_BROADCAST 0x2 /* broadcast address valid */
127 #define IFF_DEBUG 0x4 /* turn on debugging */
128 #define IFF_LOOPBACK 0x8 /* is a loopback net */
129 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */
130 #define IFF_SMART 0x20 /* interface manages own routes */
131 #define IFF_RUNNING 0x40 /* resources allocated */
132 #define IFF_NOARP 0x80 /* no address resolution protocol */
133 #define IFF_PROMISC 0x100 /* receive all packets */
134 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */
135 #define IFF_OACTIVE 0x400 /* transmission in progress */
136 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */
137 #define IFF_LINK0 0x1000 /* per link layer defined bit */
138 #define IFF_LINK1 0x2000 /* per link layer defined bit */
139 #define IFF_LINK2 0x4000 /* per link layer defined bit */
140 #define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */
141 #define IFF_MULTICAST 0x8000 /* supports multicast */
142 #define IFF_POLLING 0x10000 /* Interface is in polling mode. */
143 #define IFF_PPROMISC 0x20000 /* user-requested promisc mode */
145 /* flags set internally only: */
146 #define IFF_CANTCHANGE \
147 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
148 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_SMART|IFF_PROMISC|\
151 /* Capabilities that interfaces can advertise. */
152 #define IFCAP_RXCSUM 0x0001 /* can offload checksum on RX */
153 #define IFCAP_TXCSUM 0x0002 /* can offload checksum on TX */
154 #define IFCAP_NETCONS 0x0004 /* can be a network console */
156 #define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM)
158 #define IFQ_MAXLEN 50
159 #define IFNET_SLOWHZ 1 /* granularity is 1 second */
162 * Message format for use in obtaining information about interfaces
163 * from getkerninfo and the routing socket
166 u_short ifm_msglen; /* to skip over non-understood messages */
167 u_char ifm_version; /* future binary compatibility */
168 u_char ifm_type; /* message type */
169 int ifm_addrs; /* like rtm_addrs */
170 int ifm_flags; /* value of if_flags */
171 u_short ifm_index; /* index for associated ifp */
172 struct if_data ifm_data;/* statistics and other data about if */
176 * Message format for use in obtaining information about interface addresses
177 * from getkerninfo and the routing socket
180 u_short ifam_msglen; /* to skip over non-understood messages */
181 u_char ifam_version; /* future binary compatibility */
182 u_char ifam_type; /* message type */
183 int ifam_addrs; /* like rtm_addrs */
184 int ifam_flags; /* value of ifa_flags */
185 u_short ifam_index; /* index for associated ifp */
186 int ifam_metric; /* value of ifa_metric */
190 * Message format for use in obtaining information about multicast addresses
191 * from the routing socket
194 u_short ifmam_msglen; /* to skip over non-understood messages */
195 u_char ifmam_version; /* future binary compatibility */
196 u_char ifmam_type; /* message type */
197 int ifmam_addrs; /* like rtm_addrs */
198 int ifmam_flags; /* value of ifa_flags */
199 u_short ifmam_index; /* index for associated ifp */
203 * Message format announcing the arrival or departure of a network interface.
205 struct if_announcemsghdr {
206 u_short ifan_msglen; /* to skip over non-understood messages */
207 u_char ifan_version; /* future binary compatibility */
208 u_char ifan_type; /* message type */
209 u_short ifan_index; /* index for associated ifp */
210 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
211 u_short ifan_what; /* what type of announcement */
214 #define IFAN_ARRIVAL 0 /* interface arrival */
215 #define IFAN_DEPARTURE 1 /* interface departure */
218 * Interface request structure used for socket
219 * ioctl's. All interface ioctl's must have parameter
220 * definitions which begin with ifr_name. The
221 * remainder may be interface specific.
224 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
226 struct sockaddr ifru_addr;
227 struct sockaddr ifru_dstaddr;
228 struct sockaddr ifru_broadaddr;
238 #define ifr_addr ifr_ifru.ifru_addr /* address */
239 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
240 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
241 #define ifr_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */
242 #define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */
243 #define ifr_metric ifr_ifru.ifru_metric /* metric */
244 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
245 #define ifr_phys ifr_ifru.ifru_phys /* physical wire */
246 #define ifr_media ifr_ifru.ifru_media /* physical media */
247 #define ifr_data ifr_ifru.ifru_data /* for use by interface */
248 #define ifr_reqcap ifr_ifru.ifru_cap[0] /* requested capabilities */
249 #define ifr_curcap ifr_ifru.ifru_cap[1] /* current capabilities */
250 #define ifr_index ifr_ifru.ifru_index /* interface index */
253 #define _SIZEOF_ADDR_IFREQ(ifr) \
254 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \
255 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \
256 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq))
259 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
260 struct sockaddr ifra_addr;
261 struct sockaddr ifra_broadaddr;
262 struct sockaddr ifra_mask;
266 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */
267 int ifm_current; /* current media options */
268 int ifm_mask; /* don't care mask */
269 int ifm_status; /* media status */
270 int ifm_active; /* active options */
271 int ifm_count; /* # entries in ifm_ulist array */
272 int *ifm_ulist; /* media words */
276 * Structure used to retrieve aux status data from interfaces.
277 * Kernel suppliers to this interface should respect the formatting
278 * needed by ifconfig(8): each line starts with a TAB and ends with
279 * a newline. The canonical example to copy and paste is in if_tun.c.
282 #define IFSTATMAX 800 /* 10 lines of text */
284 char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */
285 char ascii[IFSTATMAX + 1];
289 * Structure used in SIOCGIFCONF request.
290 * Used to retrieve interface configuration
291 * for machine (useful for programs which
292 * must know all networks accessible).
295 int ifc_len; /* size of associated buffer */
298 struct ifreq *ifcu_req;
300 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
301 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
306 * Structure for SIOC[AGD]LIFADDR
309 char iflr_name[IFNAMSIZ];
311 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */
312 u_int prefixlen; /* in/out */
313 struct sockaddr_storage addr; /* in/out */
314 struct sockaddr_storage dstaddr; /* out */
318 #ifdef MALLOC_DECLARE
319 MALLOC_DECLARE(M_IFADDR);
320 MALLOC_DECLARE(M_IFMADDR);
325 struct if_nameindex {
326 u_int if_index; /* 1, 2, ... */
327 char *if_name; /* null terminated name: "le0", ... */
331 u_int if_nametoindex(const char *);
332 char *if_indextoname(u_int, char *);
333 struct if_nameindex *if_nameindex(void);
334 void if_freenameindex(struct if_nameindex *);
341 /* XXX - this should go away soon. */
342 #include <net/if_var.h>
345 #endif /* !_NET_IF_H_ */