2 * Copyright (c) 1982, 1986, 1989, 1993
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6 * modification, are permitted provided that the following conditions
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29 * @(#)if.h 8.1 (Berkeley) 6/10/93
36 #include <sys/cdefs.h>
39 #include <sys/queue.h>
44 * <net/if.h> does not depend on <sys/time.h> on most other systems. This
45 * helps userland compatibility. (struct timeval ifi_lastchange)
46 * The same holds for <sys/socket.h>. (struct sockaddr ifru_addr)
50 #include <sys/socket.h>
57 * Length of interface external name, including terminating '\0'.
58 * Note: this is the same size as a generic device's external name.
60 #define IF_NAMESIZE 16
62 #define IFNAMSIZ IF_NAMESIZE
63 #define IF_MAXUNIT 0x7fff /* historical value */
68 * Structure used to query names of interface cloners.
72 int ifcr_total; /* total cloners (out) */
73 int ifcr_count; /* room for this many in user buffer */
74 char *ifcr_buffer; /* buffer for cloner names */
78 * Structure describing information about an interface
79 * which may be of interest to management entities.
82 /* generic interface information */
83 u_char ifi_type; /* ethernet, tokenring, etc */
84 u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */
85 u_char ifi_addrlen; /* media address length */
86 u_char ifi_hdrlen; /* media header length */
87 u_char ifi_link_state; /* current link state */
88 u_char ifi_vhid; /* carp vhid */
89 u_char ifi_baudrate_pf; /* baudrate power factor */
90 u_char ifi_datalen; /* length of this data struct */
91 u_long ifi_mtu; /* maximum transmission unit */
92 u_long ifi_metric; /* routing metric (external only) */
93 u_long ifi_baudrate; /* linespeed */
94 /* volatile statistics */
95 u_long ifi_ipackets; /* packets received on interface */
96 u_long ifi_ierrors; /* input errors on interface */
97 u_long ifi_opackets; /* packets sent on interface */
98 u_long ifi_oerrors; /* output errors on interface */
99 u_long ifi_collisions; /* collisions on csma interfaces */
100 u_long ifi_ibytes; /* total number of octets received */
101 u_long ifi_obytes; /* total number of octets sent */
102 u_long ifi_imcasts; /* packets received via multicast */
103 u_long ifi_omcasts; /* packets sent via multicast */
104 u_long ifi_iqdrops; /* dropped on input, this interface */
105 u_long ifi_noproto; /* destined for unsupported protocol */
106 uint64_t ifi_hwassist; /* HW offload capabilities, see IFCAP */
107 time_t ifi_epoch; /* uptime at attach or stat reset */
108 struct timeval ifi_lastchange; /* time of last administrative change */
110 u_long ifi_oqdrops; /* dropped on output */
115 * Interface flags are of two types: network stack owned flags, and driver
116 * owned flags. Historically, these values were stored in the same ifnet
117 * flags field, but with the advent of fine-grained locking, they have been
118 * broken out such that the network stack is responsible for synchronizing
119 * the stack-owned fields, and the device driver the device-owned fields.
120 * Both halves can perform lockless reads of the other half's field, subject
121 * to accepting the involved races.
123 * Both sets of flags come from the same number space, and should not be
124 * permitted to conflict, as they are exposed to user space via a single
127 * The following symbols identify read and write requirements for fields:
129 * (i) if_flags field set by device driver before attach, read-only there
131 * (n) if_flags field written only by the network stack, read by either the
133 * (d) if_drv_flags field written only by the device driver, read by either
134 * the stack or driver.
136 #define IFF_UP 0x1 /* (n) interface is up */
137 #define IFF_BROADCAST 0x2 /* (i) broadcast address valid */
138 #define IFF_DEBUG 0x4 /* (n) turn on debugging */
139 #define IFF_LOOPBACK 0x8 /* (i) is a loopback net */
140 #define IFF_POINTOPOINT 0x10 /* (i) is a point-to-point link */
141 #define IFF_SMART 0x20 /* (i) interface manages own routes */
142 #define IFF_DRV_RUNNING 0x40 /* (d) resources allocated */
143 #define IFF_NOARP 0x80 /* (n) no address resolution protocol */
144 #define IFF_PROMISC 0x100 /* (n) receive all packets */
145 #define IFF_ALLMULTI 0x200 /* (n) receive all multicast packets */
146 #define IFF_DRV_OACTIVE 0x400 /* (d) tx hardware queue is full */
147 #define IFF_SIMPLEX 0x800 /* (i) can't hear own transmissions */
148 #define IFF_LINK0 0x1000 /* per link layer defined bit */
149 #define IFF_LINK1 0x2000 /* per link layer defined bit */
150 #define IFF_LINK2 0x4000 /* per link layer defined bit */
151 #define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */
152 #define IFF_MULTICAST 0x8000 /* (i) supports multicast */
153 #define IFF_CANTCONFIG 0x10000 /* (i) unconfigurable using ioctl(2) */
154 #define IFF_PPROMISC 0x20000 /* (n) user-requested promisc mode */
155 #define IFF_MONITOR 0x40000 /* (n) user-requested monitor mode */
156 #define IFF_STATICARP 0x80000 /* (n) static ARP */
157 #define IFF_DYING 0x200000 /* (n) interface is winding down */
158 #define IFF_RENAMING 0x400000 /* (n) interface is being renamed */
160 * Old names for driver flags so that user space tools can continue to use
161 * the old (portable) names.
164 #define IFF_RUNNING IFF_DRV_RUNNING
165 #define IFF_OACTIVE IFF_DRV_OACTIVE
168 /* flags set internally only: */
169 #define IFF_CANTCHANGE \
170 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_DRV_RUNNING|IFF_DRV_OACTIVE|\
171 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_SMART|IFF_PROMISC|\
172 IFF_DYING|IFF_CANTCONFIG)
175 * Values for if_link_state.
177 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */
178 #define LINK_STATE_DOWN 1 /* link is down */
179 #define LINK_STATE_UP 2 /* link is up */
182 * Some convenience macros used for setting ifi_baudrate.
183 * XXX 1000 vs. 1024? --thorpej@netbsd.org
185 #define IF_Kbps(x) ((uintmax_t)(x) * 1000) /* kilobits/sec. */
186 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */
187 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */
190 * Capabilities that interfaces can advertise.
192 * struct ifnet.if_capabilities
193 * contains the optional features & capabilities a particular interface
194 * supports (not only the driver but also the detected hw revision).
195 * Capabilities are defined by IFCAP_* below.
196 * struct ifnet.if_capenable
197 * contains the enabled (either by default or through ifconfig) optional
198 * features & capabilities on this interface.
199 * Capabilities are defined by IFCAP_* below.
200 * struct if_data.ifi_hwassist in mbuf CSUM_ flag form, controlled by above
201 * contains the enabled optional feature & capabilites that can be used
202 * individually per packet and are specified in the mbuf pkthdr.csum_flags
203 * field. IFCAP_* and CSUM_* do not match one to one and CSUM_* may be
204 * more detailed or differenciated than IFCAP_*.
205 * Hwassist features are defined CSUM_* in sys/mbuf.h
207 * Capabilities that cannot be arbitrarily changed with ifconfig/ioctl
208 * are listed in IFCAP_CANTCHANGE, similar to IFF_CANTCHANGE.
209 * This is not strictly necessary because the common code never
210 * changes capabilities, and it is left to the individual driver
211 * to do the right thing. However, having the filter here
212 * avoids replication of the same code in all individual drivers.
214 #define IFCAP_RXCSUM 0x00001 /* can offload checksum on RX */
215 #define IFCAP_TXCSUM 0x00002 /* can offload checksum on TX */
216 #define IFCAP_NETCONS 0x00004 /* can be a network console */
217 #define IFCAP_VLAN_MTU 0x00008 /* VLAN-compatible MTU */
218 #define IFCAP_VLAN_HWTAGGING 0x00010 /* hardware VLAN tag support */
219 #define IFCAP_JUMBO_MTU 0x00020 /* 9000 byte MTU supported */
220 #define IFCAP_POLLING 0x00040 /* driver supports polling */
221 #define IFCAP_VLAN_HWCSUM 0x00080 /* can do IFCAP_HWCSUM on VLANs */
222 #define IFCAP_TSO4 0x00100 /* can do TCP Segmentation Offload */
223 #define IFCAP_TSO6 0x00200 /* can do TCP6 Segmentation Offload */
224 #define IFCAP_LRO 0x00400 /* can do Large Receive Offload */
225 #define IFCAP_WOL_UCAST 0x00800 /* wake on any unicast frame */
226 #define IFCAP_WOL_MCAST 0x01000 /* wake on any multicast frame */
227 #define IFCAP_WOL_MAGIC 0x02000 /* wake on any Magic Packet */
228 #define IFCAP_TOE4 0x04000 /* interface can offload TCP */
229 #define IFCAP_TOE6 0x08000 /* interface can offload TCP6 */
230 #define IFCAP_VLAN_HWFILTER 0x10000 /* interface hw can filter vlan tag */
231 #define IFCAP_POLLING_NOCOUNT 0x20000 /* polling ticks cannot be fragmented */
232 #define IFCAP_VLAN_HWTSO 0x40000 /* can do IFCAP_TSO on VLANs */
233 #define IFCAP_LINKSTATE 0x80000 /* the runtime link state is dynamic */
234 #define IFCAP_NETMAP 0x100000 /* netmap mode supported/enabled */
235 #define IFCAP_RXCSUM_IPV6 0x200000 /* can offload checksum on IPv6 RX */
236 #define IFCAP_TXCSUM_IPV6 0x400000 /* can offload checksum on IPv6 TX */
237 #define IFCAP_HWSTATS 0x800000 /* manages counters internally */
239 #define IFCAP_HWCSUM_IPV6 (IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6)
241 #define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM)
242 #define IFCAP_TSO (IFCAP_TSO4 | IFCAP_TSO6)
243 #define IFCAP_WOL (IFCAP_WOL_UCAST | IFCAP_WOL_MCAST | IFCAP_WOL_MAGIC)
244 #define IFCAP_TOE (IFCAP_TOE4 | IFCAP_TOE6)
246 #define IFCAP_CANTCHANGE (IFCAP_NETMAP)
248 #define IFQ_MAXLEN 50
249 #define IFNET_SLOWHZ 1 /* granularity is 1 second */
252 * Message format for use in obtaining information about interfaces
253 * from getkerninfo and the routing socket
254 * For the new, extensible interface see struct if_msghdrl below.
257 u_short ifm_msglen; /* to skip over non-understood messages */
258 u_char ifm_version; /* future binary compatibility */
259 u_char ifm_type; /* message type */
260 int ifm_addrs; /* like rtm_addrs */
261 int ifm_flags; /* value of if_flags */
262 u_short ifm_index; /* index for associated ifp */
263 struct if_data ifm_data;/* statistics and other data about if */
267 * The 'l' version shall be used by new interfaces, like NET_RT_IFLISTL. It is
268 * extensible after ifm_data_off or within ifm_data. Both the if_msghdr and
269 * if_data now have a member field detailing the struct length in addition to
270 * the routing message length. Macros are provided to find the start of
271 * ifm_data and the start of the socket address strucutres immediately following
272 * struct if_msghdrl given a pointer to struct if_msghdrl.
274 #define IF_MSGHDRL_IFM_DATA(_l) \
275 (struct if_data *)((char *)(_l) + (_l)->ifm_data_off)
276 #define IF_MSGHDRL_RTA(_l) \
277 (void *)((uintptr_t)(_l) + (_l)->ifm_len)
279 u_short ifm_msglen; /* to skip over non-understood messages */
280 u_char ifm_version; /* future binary compatibility */
281 u_char ifm_type; /* message type */
282 int ifm_addrs; /* like rtm_addrs */
283 int ifm_flags; /* value of if_flags */
284 u_short ifm_index; /* index for associated ifp */
285 u_short _ifm_spare1; /* spare space to grow if_index, see if_var.h */
286 u_short ifm_len; /* length of if_msghdrl incl. if_data */
287 u_short ifm_data_off; /* offset of if_data from beginning */
288 struct if_data ifm_data;/* statistics and other data about if */
289 #ifdef _IN_NET_RTSOCK_C
295 * Message format for use in obtaining information about interface addresses
296 * from getkerninfo and the routing socket
297 * For the new, extensible interface see struct ifa_msghdrl below.
300 u_short ifam_msglen; /* to skip over non-understood messages */
301 u_char ifam_version; /* future binary compatibility */
302 u_char ifam_type; /* message type */
303 int ifam_addrs; /* like rtm_addrs */
304 int ifam_flags; /* value of ifa_flags */
305 u_short ifam_index; /* index for associated ifp */
306 int ifam_metric; /* value of ifa_metric */
310 * The 'l' version shall be used by new interfaces, like NET_RT_IFLISTL. It is
311 * extensible after ifam_metric or within ifam_data. Both the ifa_msghdrl and
312 * if_data now have a member field detailing the struct length in addition to
313 * the routing message length. Macros are provided to find the start of
314 * ifm_data and the start of the socket address strucutres immediately following
315 * struct ifa_msghdrl given a pointer to struct ifa_msghdrl.
317 #define IFA_MSGHDRL_IFAM_DATA(_l) \
318 (struct if_data *)((char *)(_l) + (_l)->ifam_data_off)
319 #define IFA_MSGHDRL_RTA(_l) \
320 (void *)((uintptr_t)(_l) + (_l)->ifam_len)
322 u_short ifam_msglen; /* to skip over non-understood messages */
323 u_char ifam_version; /* future binary compatibility */
324 u_char ifam_type; /* message type */
325 int ifam_addrs; /* like rtm_addrs */
326 int ifam_flags; /* value of ifa_flags */
327 u_short ifam_index; /* index for associated ifp */
328 u_short _ifam_spare1; /* spare space to grow if_index, see if_var.h */
329 u_short ifam_len; /* length of ifa_msghdrl incl. if_data */
330 u_short ifam_data_off; /* offset of if_data from beginning */
331 int ifam_metric; /* value of ifa_metric */
332 struct if_data ifam_data;/* statistics and other data about if or
337 * Message format for use in obtaining information about multicast addresses
338 * from the routing socket
341 u_short ifmam_msglen; /* to skip over non-understood messages */
342 u_char ifmam_version; /* future binary compatibility */
343 u_char ifmam_type; /* message type */
344 int ifmam_addrs; /* like rtm_addrs */
345 int ifmam_flags; /* value of ifa_flags */
346 u_short ifmam_index; /* index for associated ifp */
350 * Message format announcing the arrival or departure of a network interface.
352 struct if_announcemsghdr {
353 u_short ifan_msglen; /* to skip over non-understood messages */
354 u_char ifan_version; /* future binary compatibility */
355 u_char ifan_type; /* message type */
356 u_short ifan_index; /* index for associated ifp */
357 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
358 u_short ifan_what; /* what type of announcement */
361 #define IFAN_ARRIVAL 0 /* interface arrival */
362 #define IFAN_DEPARTURE 1 /* interface departure */
365 * Buffer with length to be used in SIOCGIFDESCR/SIOCSIFDESCR requests
367 struct ifreq_buffer {
373 * Interface request structure used for socket
374 * ioctl's. All interface ioctl's must have parameter
375 * definitions which begin with ifr_name. The
376 * remainder may be interface specific.
379 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
381 struct sockaddr ifru_addr;
382 struct sockaddr ifru_dstaddr;
383 struct sockaddr ifru_broadaddr;
384 struct ifreq_buffer ifru_buffer;
396 #define ifr_addr ifr_ifru.ifru_addr /* address */
397 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
398 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
399 #define ifr_buffer ifr_ifru.ifru_buffer /* user supplied buffer with its length */
400 #define ifr_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */
401 #define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */
402 #define ifr_jid ifr_ifru.ifru_jid /* jail/vnet */
403 #define ifr_metric ifr_ifru.ifru_metric /* metric */
404 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
405 #define ifr_phys ifr_ifru.ifru_phys /* physical wire */
406 #define ifr_media ifr_ifru.ifru_media /* physical media */
407 #define ifr_data ifr_ifru.ifru_data /* for use by interface */
408 #define ifr_reqcap ifr_ifru.ifru_cap[0] /* requested capabilities */
409 #define ifr_curcap ifr_ifru.ifru_cap[1] /* current capabilities */
410 #define ifr_index ifr_ifru.ifru_index /* interface index */
411 #define ifr_fib ifr_ifru.ifru_fib /* interface fib */
414 #define _SIZEOF_ADDR_IFREQ(ifr) \
415 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \
416 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \
417 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq))
420 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
421 struct sockaddr ifra_addr;
422 struct sockaddr ifra_broadaddr;
423 struct sockaddr ifra_mask;
427 /* Compat with pre-10.x */
429 char ifra_name[IFNAMSIZ];
430 struct sockaddr ifra_addr;
431 struct sockaddr ifra_broadaddr;
432 struct sockaddr ifra_mask;
436 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */
437 int ifm_current; /* current media options */
438 int ifm_mask; /* don't care mask */
439 int ifm_status; /* media status */
440 int ifm_active; /* active options */
441 int ifm_count; /* # entries in ifm_ulist array */
442 int *ifm_ulist; /* media words */
446 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */
447 unsigned long ifd_cmd;
453 * Structure used to retrieve aux status data from interfaces.
454 * Kernel suppliers to this interface should respect the formatting
455 * needed by ifconfig(8): each line starts with a TAB and ends with
456 * a newline. The canonical example to copy and paste is in if_tun.c.
459 #define IFSTATMAX 800 /* 10 lines of text */
461 char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */
462 char ascii[IFSTATMAX + 1];
466 * Structure used in SIOCGIFCONF request.
467 * Used to retrieve interface configuration
468 * for machine (useful for programs which
469 * must know all networks accessible).
472 int ifc_len; /* size of associated buffer */
475 struct ifreq *ifcu_req;
477 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
478 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
485 #define IFG_ALL "all" /* group contains all interfaces */
486 /* XXX: will we implement this? */
487 #define IFG_EGRESS "egress" /* if(s) default route(s) point to */
491 char ifgrqu_group[IFNAMSIZ];
492 char ifgrqu_member[IFNAMSIZ];
494 #define ifgrq_group ifgrq_ifgrqu.ifgrqu_group
495 #define ifgrq_member ifgrq_ifgrqu.ifgrqu_member
499 * Used to lookup groups for an interface
502 char ifgr_name[IFNAMSIZ];
505 char ifgru_group[IFNAMSIZ];
506 struct ifg_req *ifgru_groups;
508 #define ifgr_group ifgr_ifgru.ifgru_group
509 #define ifgr_groups ifgr_ifgru.ifgru_groups
513 * Structure for SIOC[AGD]LIFADDR
516 char iflr_name[IFNAMSIZ];
518 #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */
519 u_int prefixlen; /* in/out */
520 struct sockaddr_storage addr; /* in/out */
521 struct sockaddr_storage dstaddr; /* out */
525 * Structure used to request i2c data
526 * from interface transceivers.
529 uint8_t dev_addr; /* i2c address (0xA0, 0xA2) */
530 uint8_t offset; /* read offset */
531 uint8_t len; /* read length */
534 uint8_t data[8]; /* read buffer */
541 #define RSS_FUNC_NONE 0 /* RSS disabled */
542 #define RSS_FUNC_PRIVATE 1 /* non-standard */
543 #define RSS_FUNC_TOEPLITZ 2
545 #define RSS_TYPE_IPV4 0x00000001
546 #define RSS_TYPE_TCP_IPV4 0x00000002
547 #define RSS_TYPE_IPV6 0x00000004
548 #define RSS_TYPE_IPV6_EX 0x00000008
549 #define RSS_TYPE_TCP_IPV6 0x00000010
550 #define RSS_TYPE_TCP_IPV6_EX 0x00000020
551 #define RSS_TYPE_UDP_IPV4 0x00000040
552 #define RSS_TYPE_UDP_IPV6 0x00000080
553 #define RSS_TYPE_UDP_IPV6_EX 0x00000100
555 #define RSS_KEYLEN 128
558 char ifrk_name[IFNAMSIZ]; /* if name, e.g. "en0" */
559 uint8_t ifrk_func; /* RSS_FUNC_ */
561 uint16_t ifrk_keylen;
562 uint8_t ifrk_key[RSS_KEYLEN];
566 char ifrh_name[IFNAMSIZ]; /* if name, e.g. "en0" */
567 uint8_t ifrh_func; /* RSS_FUNC_ */
569 uint16_t ifrh_spare1;
570 uint32_t ifrh_types; /* RSS_TYPE_ */
573 #endif /* __BSD_VISIBLE */
576 #ifdef MALLOC_DECLARE
577 MALLOC_DECLARE(M_IFADDR);
578 MALLOC_DECLARE(M_IFMADDR);
583 struct if_nameindex {
584 unsigned int if_index; /* 1, 2, ... */
585 char *if_name; /* null terminated name: "le0", ... */
589 void if_freenameindex(struct if_nameindex *);
590 char *if_indextoname(unsigned int, char *);
591 struct if_nameindex *if_nameindex(void);
592 unsigned int if_nametoindex(const char *);
597 /* XXX - this should go away soon. */
598 #include <net/if_var.h>
601 #endif /* !_NET_IF_H_ */