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33 * @(#)if.h 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/net/if.h,v 1.58.2.9 2002/08/30 14:23:38 sobomax Exp $
35 * $DragonFly: src/sys/net/if.h,v 1.7 2003/11/22 19:30:56 asmodai Exp $
42 #include <sys/queue.h>
46 * <net/if.h> does not depend on <sys/time.h> on most other systems. This
47 * helps userland compatibility. (struct timeval ifi_lastchange)
56 * Length of interface external name, including terminating '\0'.
57 * Note: this is the same size as a generic device's external name.
60 #define IF_NAMESIZE IFNAMSIZ
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 */
71 int (*ifc_create)(struct if_clone *, int *);
72 void (*ifc_destroy)(struct ifnet *);
75 #define IF_CLONE_INITIALIZER(name, create, destroy) \
76 { { 0 }, name, sizeof(name) - 1, create, destroy }
80 * Structure used to query names of interface cloners.
84 int ifcr_total; /* total cloners (out) */
85 int ifcr_count; /* room for this many in user buffer */
86 char *ifcr_buffer; /* buffer for cloner names */
90 * Structure describing information about an interface
91 * which may be of interest to management entities.
94 /* generic interface information */
95 u_char ifi_type; /* ethernet, tokenring, etc */
96 u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */
97 u_char ifi_addrlen; /* media address length */
98 u_char ifi_hdrlen; /* media header length */
99 u_char ifi_recvquota; /* polling quota for receive intrs */
100 u_char ifi_xmitquota; /* polling quota for xmit intrs */
101 u_long ifi_mtu; /* maximum transmission unit */
102 u_long ifi_metric; /* routing metric (external only) */
103 u_long ifi_baudrate; /* linespeed */
104 /* volatile statistics */
105 u_long ifi_ipackets; /* packets received on interface */
106 u_long ifi_ierrors; /* input errors on interface */
107 u_long ifi_opackets; /* packets sent on interface */
108 u_long ifi_oerrors; /* output errors on interface */
109 u_long ifi_collisions; /* collisions on csma interfaces */
110 u_long ifi_ibytes; /* total number of octets received */
111 u_long ifi_obytes; /* total number of octets sent */
112 u_long ifi_imcasts; /* packets received via multicast */
113 u_long ifi_omcasts; /* packets sent via multicast */
114 u_long ifi_iqdrops; /* dropped on input, this interface */
115 u_long ifi_noproto; /* destined for unsupported protocol */
116 u_long ifi_hwassist; /* HW offload capabilities */
117 u_long ifi_unused; /* XXX was ifi_xmittiming */
118 struct timeval ifi_lastchange; /* time of last administrative change */
121 #define IFF_UP 0x1 /* interface is up */
122 #define IFF_BROADCAST 0x2 /* broadcast address valid */
123 #define IFF_DEBUG 0x4 /* turn on debugging */
124 #define IFF_LOOPBACK 0x8 /* is a loopback net */
125 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */
126 #define IFF_SMART 0x20 /* interface manages own routes */
127 #define IFF_RUNNING 0x40 /* resources allocated */
128 #define IFF_NOARP 0x80 /* no address resolution protocol */
129 #define IFF_PROMISC 0x100 /* receive all packets */
130 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */
131 #define IFF_OACTIVE 0x400 /* transmission in progress */
132 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */
133 #define IFF_LINK0 0x1000 /* per link layer defined bit */
134 #define IFF_LINK1 0x2000 /* per link layer defined bit */
135 #define IFF_LINK2 0x4000 /* per link layer defined bit */
136 #define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */
137 #define IFF_MULTICAST 0x8000 /* supports multicast */
140 * The following flag(s) ought to go in if_flags, but we cannot change
141 * struct ifnet because of binary compatibility, so we store them in
142 * if_ipending, which is not used so far.
143 * If possible, make sure the value is not conflicting with other
144 * IFF flags, so we have an easier time when we want to merge them.
146 #define IFF_POLLING 0x10000 /* Interface is in polling mode. */
147 #define IFF_PPROMISC 0x20000 /* user-requested promisc mode */
149 /* flags set internally only: */
150 #define IFF_CANTCHANGE \
151 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
152 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_SMART|IFF_POLLING)
154 /* Capabilities that interfaces can advertise. */
155 #define IFCAP_RXCSUM 0x0001 /* can offload checksum on RX */
156 #define IFCAP_TXCSUM 0x0002 /* can offload checksum on TX */
157 #define IFCAP_NETCONS 0x0004 /* can be a network console */
159 #define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM)
161 #define IFQ_MAXLEN 50
162 #define IFNET_SLOWHZ 1 /* granularity is 1 second */
165 * Message format for use in obtaining information about interfaces
166 * from getkerninfo and the routing socket
169 u_short ifm_msglen; /* to skip over non-understood messages */
170 u_char ifm_version; /* future binary compatibility */
171 u_char ifm_type; /* message type */
172 int ifm_addrs; /* like rtm_addrs */
173 int ifm_flags; /* value of if_flags */
174 u_short ifm_index; /* index for associated ifp */
175 struct if_data ifm_data;/* statistics and other data about if */
179 * Message format for use in obtaining information about interface addresses
180 * from getkerninfo and the routing socket
183 u_short ifam_msglen; /* to skip over non-understood messages */
184 u_char ifam_version; /* future binary compatibility */
185 u_char ifam_type; /* message type */
186 int ifam_addrs; /* like rtm_addrs */
187 int ifam_flags; /* value of ifa_flags */
188 u_short ifam_index; /* index for associated ifp */
189 int ifam_metric; /* value of ifa_metric */
193 * Message format for use in obtaining information about multicast addresses
194 * from the routing socket
197 u_short ifmam_msglen; /* to skip over non-understood messages */
198 u_char ifmam_version; /* future binary compatibility */
199 u_char ifmam_type; /* message type */
200 int ifmam_addrs; /* like rtm_addrs */
201 int ifmam_flags; /* value of ifa_flags */
202 u_short ifmam_index; /* index for associated ifp */
206 * Message format announcing the arrival or departure of a network interface.
208 struct if_announcemsghdr {
209 u_short ifan_msglen; /* to skip over non-understood messages */
210 u_char ifan_version; /* future binary compatibility */
211 u_char ifan_type; /* message type */
212 u_short ifan_index; /* index for associated ifp */
213 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
214 u_short ifan_what; /* what type of announcement */
217 #define IFAN_ARRIVAL 0 /* interface arrival */
218 #define IFAN_DEPARTURE 1 /* interface departure */
221 * Interface request structure used for socket
222 * ioctl's. All interface ioctl's must have parameter
223 * definitions which begin with ifr_name. The
224 * remainder may be interface specific.
227 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
229 struct sockaddr ifru_addr;
230 struct sockaddr ifru_dstaddr;
231 struct sockaddr ifru_broadaddr;
240 #define ifr_addr ifr_ifru.ifru_addr /* address */
241 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
242 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
243 #define ifr_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */
244 #define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */
245 #define ifr_metric ifr_ifru.ifru_metric /* metric */
246 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
247 #define ifr_phys ifr_ifru.ifru_phys /* physical wire */
248 #define ifr_media ifr_ifru.ifru_media /* physical media */
249 #define ifr_data ifr_ifru.ifru_data /* for use by interface */
250 #define ifr_reqcap ifr_ifru.ifru_cap[0] /* requested capabilities */
251 #define ifr_curcap ifr_ifru.ifru_cap[1] /* current capabilities */
254 #define _SIZEOF_ADDR_IFREQ(ifr) \
255 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \
256 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \
257 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq))
260 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
261 struct sockaddr ifra_addr;
262 struct sockaddr ifra_broadaddr;
263 struct sockaddr ifra_mask;
267 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */
268 int ifm_current; /* current media options */
269 int ifm_mask; /* don't care mask */
270 int ifm_status; /* media status */
271 int ifm_active; /* active options */
272 int ifm_count; /* # entries in ifm_ulist array */
273 int *ifm_ulist; /* media words */
277 * Structure used to retrieve aux status data from interfaces.
278 * Kernel suppliers to this interface should respect the formatting
279 * needed by ifconfig(8): each line starts with a TAB and ends with
280 * a newline. The canonical example to copy and paste is in if_tun.c.
283 #define IFSTATMAX 800 /* 10 lines of text */
285 char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */
286 char ascii[IFSTATMAX + 1];
290 * Structure used in SIOCGIFCONF request.
291 * Used to retrieve interface configuration
292 * for machine (useful for programs which
293 * must know all networks accessible).
296 int ifc_len; /* size of associated buffer */
299 struct ifreq *ifcu_req;
301 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
302 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
307 * Structure for SIOC[AGD]LIFADDR
310 char iflr_name[IFNAMSIZ];
312 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */
313 u_int prefixlen; /* in/out */
314 struct sockaddr_storage addr; /* in/out */
315 struct sockaddr_storage dstaddr; /* out */
319 #ifdef MALLOC_DECLARE
320 MALLOC_DECLARE(M_IFADDR);
321 MALLOC_DECLARE(M_IFMADDR);
326 struct if_nameindex {
327 u_int if_index; /* 1, 2, ... */
328 const char *if_name; /* null terminated name: "le0", ... */
332 u_int if_nametoindex (const char *);
333 char *if_indextoname(u_int, char *);
334 struct if_nameindex *if_nameindex (void);
335 void if_freenameindex (struct if_nameindex *);
342 int prison_if (struct thread *td, struct sockaddr *sa);
344 /* XXX - this should go away soon. */
345 #include <net/if_var.h>
348 #endif /* !_NET_IF_H_ */