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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 $
41 #include <sys/types.h>
46 #ifndef _SYS_SOCKET_H_
47 #include <sys/socket.h>
53 #include <sys/queue.h>
59 * Values for if_link_state.
61 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */
62 #define LINK_STATE_DOWN 1 /* link is down */
63 #define LINK_STATE_UP 2 /* link is up */
64 #define LINK_STATE_IS_UP(_s) ((_s) >= LINK_STATE_UP)
69 * Length of interface external name, including terminating '\0'.
70 * Note: this is the same size as a generic device's external name.
73 #define IF_NAMESIZE IFNAMSIZ
74 #define IF_MAXUNIT 0x7fff /* if_unit is 15bits */
77 * Structure used to query names of interface cloners.
78 * XXX should be moved to net/if_clone.h
81 int ifcr_total; /* total cloners (out) */
82 int ifcr_count; /* room for this many in user buffer */
83 char *ifcr_buffer; /* buffer for cloner names */
87 * Structure describing information about an interface
88 * which may be of interest to management entities.
91 /* generic interface information */
92 u_char ifi_type; /* ethernet, tokenring, etc */
93 u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */
94 u_char ifi_addrlen; /* media address length */
95 u_char ifi_hdrlen; /* media header length */
96 u_char ifi_recvquota; /* polling quota for receive intrs */
97 u_char ifi_xmitquota; /* polling quota for xmit intrs */
98 u_long ifi_mtu; /* maximum transmission unit */
99 u_long ifi_metric; /* routing metric (external only) */
100 u_long ifi_link_state; /* current link state */
101 uint64_t ifi_baudrate; /* linespeed */
102 /* volatile statistics */
103 u_long ifi_ipackets; /* packets received on interface */
104 u_long ifi_ierrors; /* input errors on interface */
105 u_long ifi_opackets; /* packets sent on interface */
106 u_long ifi_oerrors; /* output errors on interface */
107 u_long ifi_collisions; /* collisions on csma interfaces */
108 u_long ifi_ibytes; /* total number of octets received */
109 u_long ifi_obytes; /* total number of octets sent */
110 u_long ifi_imcasts; /* packets received via multicast */
111 u_long ifi_omcasts; /* packets sent via multicast */
112 u_long ifi_iqdrops; /* dropped on input, this interface */
113 u_long ifi_noproto; /* destined for unsupported protocol */
114 u_long ifi_hwassist; /* HW offload capabilities */
115 u_long ifi_unused; /* XXX was ifi_xmittiming */
116 struct timeval ifi_lastchange; /* time of last administrative change */
119 #define IFF_UP 0x1 /* interface is up */
120 #define IFF_BROADCAST 0x2 /* broadcast address valid */
121 #define IFF_DEBUG 0x4 /* turn on debugging */
122 #define IFF_LOOPBACK 0x8 /* is a loopback net */
123 #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */
124 #define IFF_SMART 0x20 /* interface manages own routes */
125 #define IFF_RUNNING 0x40 /* resources allocated */
126 #define IFF_NOARP 0x80 /* no address resolution protocol */
127 #define IFF_PROMISC 0x100 /* receive all packets */
128 #define IFF_ALLMULTI 0x200 /* receive all multicast packets */
129 #define IFF_OACTIVE 0x400 /* transmission in progress */
130 #define IFF_SIMPLEX 0x800 /* can't hear own transmissions */
131 #define IFF_LINK0 0x1000 /* per link layer defined bit */
132 #define IFF_LINK1 0x2000 /* per link layer defined bit */
133 #define IFF_LINK2 0x4000 /* per link layer defined bit */
134 #define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */
135 #define IFF_MULTICAST 0x8000 /* supports multicast */
136 #define IFF_POLLING 0x10000 /* Interface is in polling mode. */
137 #define IFF_PPROMISC 0x20000 /* user-requested promisc mode */
138 #define IFF_MONITOR 0x40000 /* user-requested monitor mode */
139 #define IFF_STATICARP 0x80000 /* static ARP */
140 #define IFF_NPOLLING 0x100000 /* ifpoll is used */
142 /* flags set internally only: */
143 #define IFF_CANTCHANGE \
144 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
145 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_SMART|IFF_POLLING|\
149 * Some convenience macros used for setting ifi_baudrate.
150 * XXX 1000 vs. 1024? --thorpej@netbsd.org
152 #define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */
153 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */
154 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */
156 /* Capabilities that interfaces can advertise. */
157 #define IFCAP_RXCSUM 0x00001 /* can offload checksum on RX */
158 #define IFCAP_TXCSUM 0x00002 /* can offload checksum on TX */
159 #define IFCAP_NETCONS 0x00004 /* can be a network console */
160 #define IFCAP_VLAN_MTU 0x00008 /* VLAN-compatible MTU */
161 #define IFCAP_VLAN_HWTAGGING 0x00010 /* hardware VLAN tag support */
162 #define IFCAP_JUMBO_MTU 0x00020 /* 9000 byte MTU support */
163 #define IFCAP_RSS 0x00040 /* Receive Side Scaling for IPv4 */
164 #define IFCAP_VLAN_HWCSUM 0x00080 /* can do IFCAP_HWCSUM on VLANs */
165 #define IFCAP_TSO4 0x00100 /* can offload TCP segmentation */
166 #define IFCAP_TSO IFCAP_TSO4
167 #define IFCAP_TSO6 0x00200 /* can offload TCP6 segmentation */
169 #define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM)
172 #define IFQ_MAXLEN 50
173 #define IFNET_SLOWHZ 1 /* granularity is 1 second */
176 * Message format for use in obtaining information about interfaces
177 * from getkerninfo and the routing socket
180 u_short ifm_msglen; /* to skip over non-understood messages */
181 u_char ifm_version; /* future binary compatibility */
182 u_char ifm_type; /* message type */
183 int ifm_addrs; /* like rtm_addrs */
184 int ifm_flags; /* value of if_flags */
185 u_short ifm_index; /* index for associated ifp */
186 struct if_data ifm_data;/* statistics and other data about if */
190 * Message format for use in obtaining information about interface addresses
191 * from getkerninfo and the routing socket
194 u_short ifam_msglen; /* to skip over non-understood messages */
195 u_char ifam_version; /* future binary compatibility */
196 u_char ifam_type; /* message type */
197 int ifam_addrs; /* like rtm_addrs */
198 int ifam_flags; /* value of ifa_flags */
199 u_short ifam_index; /* index for associated ifp */
200 int ifam_metric; /* value of ifa_metric */
204 * Message format for use in obtaining information about multicast addresses
205 * from the routing socket
208 u_short ifmam_msglen; /* to skip over non-understood messages */
209 u_char ifmam_version; /* future binary compatibility */
210 u_char ifmam_type; /* message type */
211 int ifmam_addrs; /* like rtm_addrs */
212 int ifmam_flags; /* value of ifa_flags */
213 u_short ifmam_index; /* index for associated ifp */
217 * Message format announcing the arrival or departure of a network interface.
219 struct if_announcemsghdr {
220 u_short ifan_msglen; /* to skip over non-understood messages */
221 u_char ifan_version; /* future binary compatibility */
222 u_char ifan_type; /* message type */
223 u_short ifan_index; /* index for associated ifp */
224 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
225 u_short ifan_what; /* what type of announcement */
228 #define IFAN_ARRIVAL 0 /* interface arrival */
229 #define IFAN_DEPARTURE 1 /* interface departure */
232 * Interface request structure used for socket
233 * ioctl's. All interface ioctl's must have parameter
234 * definitions which begin with ifr_name. The
235 * remainder may be interface specific.
238 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
240 struct sockaddr ifru_addr;
241 struct sockaddr ifru_dstaddr;
242 struct sockaddr ifru_broadaddr;
253 #define ifr_addr ifr_ifru.ifru_addr /* address */
254 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
255 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
256 #define ifr_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */
257 #define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */
258 #define ifr_metric ifr_ifru.ifru_metric /* metric */
259 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
260 #define ifr_phys ifr_ifru.ifru_phys /* physical wire */
261 #define ifr_media ifr_ifru.ifru_media /* physical media */
262 #define ifr_data ifr_ifru.ifru_data /* for use by interface */
263 #define ifr_reqcap ifr_ifru.ifru_cap[0] /* requested capabilities */
264 #define ifr_curcap ifr_ifru.ifru_cap[1] /* current capabilities */
265 #define ifr_index ifr_ifru.ifru_index /* interface index */
266 #define ifr_pollcpu ifr_ifru.ifru_pollcpu /* polling(4) cpu */
269 #define _SIZEOF_ADDR_IFREQ(ifr) \
270 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \
271 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \
272 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq))
275 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
276 struct sockaddr ifra_addr;
277 struct sockaddr ifra_broadaddr;
278 struct sockaddr ifra_mask;
282 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */
283 int ifm_current; /* current media options */
284 int ifm_mask; /* don't care mask */
285 int ifm_status; /* media status */
286 int ifm_active; /* active options */
287 int ifm_count; /* # entries in ifm_ulist array */
288 int *ifm_ulist; /* media words */
292 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */
293 unsigned long ifd_cmd;
299 * Structure used to retrieve aux status data from interfaces.
300 * Kernel suppliers to this interface should respect the formatting
301 * needed by ifconfig(8): each line starts with a TAB and ends with
302 * a newline. The canonical example to copy and paste is in if_tun.c.
305 #define IFSTATMAX 800 /* 10 lines of text */
307 char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */
308 char ascii[IFSTATMAX + 1];
312 * Structure used in SIOCGIFCONF request.
313 * Used to retrieve interface configuration
314 * for machine (useful for programs which
315 * must know all networks accessible).
318 int ifc_len; /* size of associated buffer */
321 struct ifreq *ifcu_req;
323 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
324 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
331 #define IFG_ALL "all" /* group contains all interfaces */
332 /* XXX: will we implement this? */
333 #define IFG_EGRESS "egress" /* if(s) default route(s) point to */
337 char ifgrqu_group[IFNAMSIZ];
338 char ifgrqu_member[IFNAMSIZ];
340 #define ifgrq_group ifgrq_ifgrqu.ifgrqu_group
341 #define ifgrq_member ifgrq_ifgrqu.ifgrqu_member
345 * Used to lookup groups for an interface
348 char ifgr_name[IFNAMSIZ];
351 char ifgru_group[IFNAMSIZ];
352 struct ifg_req *ifgru_groups;
354 #define ifgr_group ifgr_ifgru.ifgru_group
355 #define ifgr_groups ifgr_ifgru.ifgru_groups
359 * Structure for SIOC[AGD]LIFADDR
362 char iflr_name[IFNAMSIZ];
364 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */
365 u_int prefixlen; /* in/out */
366 struct sockaddr_storage addr; /* in/out */
367 struct sockaddr_storage dstaddr; /* out */
371 struct if_nameindex {
372 u_int if_index; /* 1, 2, ... */
373 char *if_name; /* null terminated name: "lnc0", ... */
377 u_int if_nametoindex (const char *);
378 char *if_indextoname(u_int, char *);
379 struct if_nameindex *if_nameindex (void);
380 void if_freenameindex (struct if_nameindex *);
388 int prison_if (struct ucred *cred, struct sockaddr *sa);
390 /* XXX - this should go away soon. */
391 #include <net/if_var.h>
394 #endif /* !_NET_IF_H_ */