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31 * @(#)if.h 8.1 (Berkeley) 6/10/93
38 #include <sys/cdefs.h>
42 * <net/if.h> does not depend on <sys/time.h> on most other systems. This
43 * helps userland compatibility. (struct timeval ifi_lastchange)
44 * The same holds for <sys/socket.h>. (struct sockaddr ifru_addr)
48 #include <sys/socket.h>
53 * Length of interface external name, including terminating '\0'.
54 * Note: this is the same size as a generic device's external name.
56 #define IF_NAMESIZE 16
58 #define IFNAMSIZ IF_NAMESIZE
59 #define IF_MAXUNIT 0x7fff /* historical value */
64 * Structure used to query names of interface cloners.
68 int ifcr_total; /* total cloners (out) */
69 int ifcr_count; /* room for this many in user buffer */
70 char *ifcr_buffer; /* buffer for cloner names */
74 * Structure describing information about an interface
75 * which may be of interest to management entities.
78 /* generic interface information */
79 uint8_t ifi_type; /* ethernet, tokenring, etc */
80 uint8_t ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */
81 uint8_t ifi_addrlen; /* media address length */
82 uint8_t ifi_hdrlen; /* media header length */
83 uint8_t ifi_link_state; /* current link state */
84 uint8_t ifi_vhid; /* carp vhid */
85 uint16_t ifi_datalen; /* length of this data struct */
86 uint32_t ifi_mtu; /* maximum transmission unit */
87 uint32_t ifi_metric; /* routing metric (external only) */
88 uint64_t ifi_baudrate; /* linespeed */
89 /* volatile statistics */
90 uint64_t ifi_ipackets; /* packets received on interface */
91 uint64_t ifi_ierrors; /* input errors on interface */
92 uint64_t ifi_opackets; /* packets sent on interface */
93 uint64_t ifi_oerrors; /* output errors on interface */
94 uint64_t ifi_collisions; /* collisions on csma interfaces */
95 uint64_t ifi_ibytes; /* total number of octets received */
96 uint64_t ifi_obytes; /* total number of octets sent */
97 uint64_t ifi_imcasts; /* packets received via multicast */
98 uint64_t ifi_omcasts; /* packets sent via multicast */
99 uint64_t ifi_iqdrops; /* dropped on input */
100 uint64_t ifi_oqdrops; /* dropped on output */
101 uint64_t ifi_noproto; /* destined for unsupported protocol */
102 uint64_t ifi_hwassist; /* HW offload capabilities, see IFCAP */
104 /* Unions are here to make sizes MI. */
105 union { /* uptime at attach or stat reset */
109 #define ifi_epoch __ifi_epoch.tt
110 union { /* time of last administrative change */
117 #define ifi_lastchange __ifi_lastchange.tv
121 * Interface flags are of two types: network stack owned flags, and driver
122 * owned flags. Historically, these values were stored in the same ifnet
123 * flags field, but with the advent of fine-grained locking, they have been
124 * broken out such that the network stack is responsible for synchronizing
125 * the stack-owned fields, and the device driver the device-owned fields.
126 * Both halves can perform lockless reads of the other half's field, subject
127 * to accepting the involved races.
129 * Both sets of flags come from the same number space, and should not be
130 * permitted to conflict, as they are exposed to user space via a single
133 * The following symbols identify read and write requirements for fields:
135 * (i) if_flags field set by device driver before attach, read-only there
137 * (n) if_flags field written only by the network stack, read by either the
139 * (d) if_drv_flags field written only by the device driver, read by either
140 * the stack or driver.
142 #define IFF_UP 0x1 /* (n) interface is up */
143 #define IFF_BROADCAST 0x2 /* (i) broadcast address valid */
144 #define IFF_DEBUG 0x4 /* (n) turn on debugging */
145 #define IFF_LOOPBACK 0x8 /* (i) is a loopback net */
146 #define IFF_POINTOPOINT 0x10 /* (i) is a point-to-point link */
147 /* 0x20 was IFF_SMART */
148 #define IFF_DRV_RUNNING 0x40 /* (d) resources allocated */
149 #define IFF_NOARP 0x80 /* (n) no address resolution protocol */
150 #define IFF_PROMISC 0x100 /* (n) receive all packets */
151 #define IFF_ALLMULTI 0x200 /* (n) receive all multicast packets */
152 #define IFF_DRV_OACTIVE 0x400 /* (d) tx hardware queue is full */
153 #define IFF_SIMPLEX 0x800 /* (i) can't hear own transmissions */
154 #define IFF_LINK0 0x1000 /* per link layer defined bit */
155 #define IFF_LINK1 0x2000 /* per link layer defined bit */
156 #define IFF_LINK2 0x4000 /* per link layer defined bit */
157 #define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */
158 #define IFF_MULTICAST 0x8000 /* (i) supports multicast */
159 #define IFF_CANTCONFIG 0x10000 /* (i) unconfigurable using ioctl(2) */
160 #define IFF_PPROMISC 0x20000 /* (n) user-requested promisc mode */
161 #define IFF_MONITOR 0x40000 /* (n) user-requested monitor mode */
162 #define IFF_STATICARP 0x80000 /* (n) static ARP */
163 #define IFF_DYING 0x200000 /* (n) interface is winding down */
164 #define IFF_RENAMING 0x400000 /* (n) interface is being renamed */
165 #define IFF_NOGROUP 0x800000 /* (n) interface is not part of any groups */
169 * Old names for driver flags so that user space tools can continue to use
170 * the old (portable) names.
173 #define IFF_RUNNING IFF_DRV_RUNNING
174 #define IFF_OACTIVE IFF_DRV_OACTIVE
177 /* flags set internally only: */
178 #define IFF_CANTCHANGE \
179 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_DRV_RUNNING|IFF_DRV_OACTIVE|\
180 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC|\
181 IFF_DYING|IFF_CANTCONFIG)
184 * Values for if_link_state.
186 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */
187 #define LINK_STATE_DOWN 1 /* link is down */
188 #define LINK_STATE_UP 2 /* link is up */
191 * Some convenience macros used for setting ifi_baudrate.
192 * XXX 1000 vs. 1024? --thorpej@netbsd.org
194 #define IF_Kbps(x) ((uintmax_t)(x) * 1000) /* kilobits/sec. */
195 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */
196 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */
199 * Capabilities that interfaces can advertise.
201 * struct ifnet.if_capabilities
202 * contains the optional features & capabilities a particular interface
203 * supports (not only the driver but also the detected hw revision).
204 * Capabilities are defined by IFCAP_* below.
205 * struct ifnet.if_capenable
206 * contains the enabled (either by default or through ifconfig) optional
207 * features & capabilities on this interface.
208 * Capabilities are defined by IFCAP_* below.
209 * struct if_data.ifi_hwassist in mbuf CSUM_ flag form, controlled by above
210 * contains the enabled optional feature & capabilites that can be used
211 * individually per packet and are specified in the mbuf pkthdr.csum_flags
212 * field. IFCAP_* and CSUM_* do not match one to one and CSUM_* may be
213 * more detailed or differenciated than IFCAP_*.
214 * Hwassist features are defined CSUM_* in sys/mbuf.h
216 * Capabilities that cannot be arbitrarily changed with ifconfig/ioctl
217 * are listed in IFCAP_CANTCHANGE, similar to IFF_CANTCHANGE.
218 * This is not strictly necessary because the common code never
219 * changes capabilities, and it is left to the individual driver
220 * to do the right thing. However, having the filter here
221 * avoids replication of the same code in all individual drivers.
223 #define IFCAP_RXCSUM 0x00001 /* can offload checksum on RX */
224 #define IFCAP_TXCSUM 0x00002 /* can offload checksum on TX */
225 #define IFCAP_NETCONS 0x00004 /* can be a network console */
226 #define IFCAP_VLAN_MTU 0x00008 /* VLAN-compatible MTU */
227 #define IFCAP_VLAN_HWTAGGING 0x00010 /* hardware VLAN tag support */
228 #define IFCAP_JUMBO_MTU 0x00020 /* 9000 byte MTU supported */
229 #define IFCAP_POLLING 0x00040 /* driver supports polling */
230 #define IFCAP_VLAN_HWCSUM 0x00080 /* can do IFCAP_HWCSUM on VLANs */
231 #define IFCAP_TSO4 0x00100 /* can do TCP Segmentation Offload */
232 #define IFCAP_TSO6 0x00200 /* can do TCP6 Segmentation Offload */
233 #define IFCAP_LRO 0x00400 /* can do Large Receive Offload */
234 #define IFCAP_WOL_UCAST 0x00800 /* wake on any unicast frame */
235 #define IFCAP_WOL_MCAST 0x01000 /* wake on any multicast frame */
236 #define IFCAP_WOL_MAGIC 0x02000 /* wake on any Magic Packet */
237 #define IFCAP_TOE4 0x04000 /* interface can offload TCP */
238 #define IFCAP_TOE6 0x08000 /* interface can offload TCP6 */
239 #define IFCAP_VLAN_HWFILTER 0x10000 /* interface hw can filter vlan tag */
240 /* available 0x20000 */
241 #define IFCAP_VLAN_HWTSO 0x40000 /* can do IFCAP_TSO on VLANs */
242 #define IFCAP_LINKSTATE 0x80000 /* the runtime link state is dynamic */
243 #define IFCAP_NETMAP 0x100000 /* netmap mode supported/enabled */
244 #define IFCAP_RXCSUM_IPV6 0x200000 /* can offload checksum on IPv6 RX */
245 #define IFCAP_TXCSUM_IPV6 0x400000 /* can offload checksum on IPv6 TX */
246 #define IFCAP_HWSTATS 0x800000 /* manages counters internally */
247 #define IFCAP_TXRTLMT 0x1000000 /* hardware supports TX rate limiting */
248 #define IFCAP_HWRXTSTMP 0x2000000 /* hardware rx timestamping */
250 #define IFCAP_HWCSUM_IPV6 (IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6)
252 #define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM)
253 #define IFCAP_TSO (IFCAP_TSO4 | IFCAP_TSO6)
254 #define IFCAP_WOL (IFCAP_WOL_UCAST | IFCAP_WOL_MCAST | IFCAP_WOL_MAGIC)
255 #define IFCAP_TOE (IFCAP_TOE4 | IFCAP_TOE6)
257 #define IFCAP_CANTCHANGE (IFCAP_NETMAP)
259 #define IFQ_MAXLEN 50
260 #define IFNET_SLOWHZ 1 /* granularity is 1 second */
263 * Message format for use in obtaining information about interfaces
264 * from getkerninfo and the routing socket
265 * For the new, extensible interface see struct if_msghdrl below.
268 u_short ifm_msglen; /* to skip over non-understood messages */
269 u_char ifm_version; /* future binary compatibility */
270 u_char ifm_type; /* message type */
271 int ifm_addrs; /* like rtm_addrs */
272 int ifm_flags; /* value of if_flags */
273 u_short ifm_index; /* index for associated ifp */
275 struct if_data ifm_data;/* statistics and other data about if */
279 * The 'l' version shall be used by new interfaces, like NET_RT_IFLISTL. It is
280 * extensible after ifm_data_off or within ifm_data. Both the if_msghdr and
281 * if_data now have a member field detailing the struct length in addition to
282 * the routing message length. Macros are provided to find the start of
283 * ifm_data and the start of the socket address strucutres immediately following
284 * struct if_msghdrl given a pointer to struct if_msghdrl.
286 #define IF_MSGHDRL_IFM_DATA(_l) \
287 (struct if_data *)((char *)(_l) + (_l)->ifm_data_off)
288 #define IF_MSGHDRL_RTA(_l) \
289 (void *)((uintptr_t)(_l) + (_l)->ifm_len)
291 u_short ifm_msglen; /* to skip over non-understood messages */
292 u_char ifm_version; /* future binary compatibility */
293 u_char ifm_type; /* message type */
294 int ifm_addrs; /* like rtm_addrs */
295 int ifm_flags; /* value of if_flags */
296 u_short ifm_index; /* index for associated ifp */
297 u_short _ifm_spare1; /* spare space to grow if_index, see if_var.h */
298 u_short ifm_len; /* length of if_msghdrl incl. if_data */
299 u_short ifm_data_off; /* offset of if_data from beginning */
301 struct if_data ifm_data;/* statistics and other data about if */
305 * Message format for use in obtaining information about interface addresses
306 * from getkerninfo and the routing socket
307 * For the new, extensible interface see struct ifa_msghdrl below.
310 u_short ifam_msglen; /* to skip over non-understood messages */
311 u_char ifam_version; /* future binary compatibility */
312 u_char ifam_type; /* message type */
313 int ifam_addrs; /* like rtm_addrs */
314 int ifam_flags; /* value of ifa_flags */
315 u_short ifam_index; /* index for associated ifp */
316 u_short _ifam_spare1;
317 int ifam_metric; /* value of ifa_ifp->if_metric */
321 * The 'l' version shall be used by new interfaces, like NET_RT_IFLISTL. It is
322 * extensible after ifam_metric or within ifam_data. Both the ifa_msghdrl and
323 * if_data now have a member field detailing the struct length in addition to
324 * the routing message length. Macros are provided to find the start of
325 * ifm_data and the start of the socket address strucutres immediately following
326 * struct ifa_msghdrl given a pointer to struct ifa_msghdrl.
328 #define IFA_MSGHDRL_IFAM_DATA(_l) \
329 (struct if_data *)((char *)(_l) + (_l)->ifam_data_off)
330 #define IFA_MSGHDRL_RTA(_l) \
331 (void *)((uintptr_t)(_l) + (_l)->ifam_len)
333 u_short ifam_msglen; /* to skip over non-understood messages */
334 u_char ifam_version; /* future binary compatibility */
335 u_char ifam_type; /* message type */
336 int ifam_addrs; /* like rtm_addrs */
337 int ifam_flags; /* value of ifa_flags */
338 u_short ifam_index; /* index for associated ifp */
339 u_short _ifam_spare1; /* spare space to grow if_index, see if_var.h */
340 u_short ifam_len; /* length of ifa_msghdrl incl. if_data */
341 u_short ifam_data_off; /* offset of if_data from beginning */
342 int ifam_metric; /* value of ifa_ifp->if_metric */
343 struct if_data ifam_data;/* statistics and other data about if or
348 * Message format for use in obtaining information about multicast addresses
349 * from the routing socket
352 u_short ifmam_msglen; /* to skip over non-understood messages */
353 u_char ifmam_version; /* future binary compatibility */
354 u_char ifmam_type; /* message type */
355 int ifmam_addrs; /* like rtm_addrs */
356 int ifmam_flags; /* value of ifa_flags */
357 u_short ifmam_index; /* index for associated ifp */
358 u_short _ifmam_spare1;
362 * Message format announcing the arrival or departure of a network interface.
364 struct if_announcemsghdr {
365 u_short ifan_msglen; /* to skip over non-understood messages */
366 u_char ifan_version; /* future binary compatibility */
367 u_char ifan_type; /* message type */
368 u_short ifan_index; /* index for associated ifp */
369 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */
370 u_short ifan_what; /* what type of announcement */
373 #define IFAN_ARRIVAL 0 /* interface arrival */
374 #define IFAN_DEPARTURE 1 /* interface departure */
377 * Buffer with length to be used in SIOCGIFDESCR/SIOCSIFDESCR requests
379 struct ifreq_buffer {
385 * Interface request structure used for socket
386 * ioctl's. All interface ioctl's must have parameter
387 * definitions which begin with ifr_name. The
388 * remainder may be interface specific.
391 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */
393 struct sockaddr ifru_addr;
394 struct sockaddr ifru_dstaddr;
395 struct sockaddr ifru_broadaddr;
396 struct ifreq_buffer ifru_buffer;
407 u_char ifru_vlan_pcp;
409 #define ifr_addr ifr_ifru.ifru_addr /* address */
410 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */
411 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */
413 #define ifr_buffer ifr_ifru.ifru_buffer /* user supplied buffer with its length */
415 #define ifr_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */
416 #define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */
417 #define ifr_jid ifr_ifru.ifru_jid /* jail/vnet */
418 #define ifr_metric ifr_ifru.ifru_metric /* metric */
419 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */
420 #define ifr_phys ifr_ifru.ifru_phys /* physical wire */
421 #define ifr_media ifr_ifru.ifru_media /* physical media */
423 #define ifr_data ifr_ifru.ifru_data /* for use by interface */
425 #define ifr_reqcap ifr_ifru.ifru_cap[0] /* requested capabilities */
426 #define ifr_curcap ifr_ifru.ifru_cap[1] /* current capabilities */
427 #define ifr_index ifr_ifru.ifru_index /* interface index */
428 #define ifr_fib ifr_ifru.ifru_fib /* interface fib */
429 #define ifr_vlan_pcp ifr_ifru.ifru_vlan_pcp /* VLAN priority */
430 #define ifr_lan_pcp ifr_ifru.ifru_vlan_pcp /* VLAN priority */
433 #define _SIZEOF_ADDR_IFREQ(ifr) \
434 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \
435 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \
436 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq))
439 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
440 struct sockaddr ifra_addr;
441 struct sockaddr ifra_broadaddr;
442 struct sockaddr ifra_mask;
448 char ifra_name[IFNAMSIZ];
449 struct sockaddr ifra_addr;
450 struct sockaddr ifra_broadaddr;
451 struct sockaddr ifra_mask;
455 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */
456 int ifm_current; /* current media options */
457 int ifm_mask; /* don't care mask */
458 int ifm_status; /* media status */
459 int ifm_active; /* active options */
460 int ifm_count; /* # entries in ifm_ulist array */
461 int *ifm_ulist; /* media words */
465 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */
466 unsigned long ifd_cmd;
472 * Structure used to retrieve aux status data from interfaces.
473 * Kernel suppliers to this interface should respect the formatting
474 * needed by ifconfig(8): each line starts with a TAB and ends with
475 * a newline. The canonical example to copy and paste is in if_tun.c.
478 #define IFSTATMAX 800 /* 10 lines of text */
480 char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */
481 char ascii[IFSTATMAX + 1];
485 * Structure used in SIOCGIFCONF request.
486 * Used to retrieve interface configuration
487 * for machine (useful for programs which
488 * must know all networks accessible).
491 int ifc_len; /* size of associated buffer */
494 struct ifreq *ifcu_req;
496 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
497 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */
504 #define IFG_ALL "all" /* group contains all interfaces */
505 /* XXX: will we implement this? */
506 #define IFG_EGRESS "egress" /* if(s) default route(s) point to */
510 char ifgrqu_group[IFNAMSIZ];
511 char ifgrqu_member[IFNAMSIZ];
513 #define ifgrq_group ifgrq_ifgrqu.ifgrqu_group
514 #define ifgrq_member ifgrq_ifgrqu.ifgrqu_member
518 * Used to lookup groups for an interface
521 char ifgr_name[IFNAMSIZ];
524 char ifgru_group[IFNAMSIZ];
525 struct ifg_req *ifgru_groups;
528 #define ifgr_group ifgr_ifgru.ifgru_group
529 #define ifgr_groups ifgr_ifgru.ifgru_groups
534 * Structure used to request i2c data
535 * from interface transceivers.
538 uint8_t dev_addr; /* i2c address (0xA0, 0xA2) */
539 uint8_t offset; /* read offset */
540 uint8_t len; /* read length */
543 uint8_t data[8]; /* read buffer */
550 #define RSS_FUNC_NONE 0 /* RSS disabled */
551 #define RSS_FUNC_PRIVATE 1 /* non-standard */
552 #define RSS_FUNC_TOEPLITZ 2
554 #define RSS_TYPE_IPV4 0x00000001
555 #define RSS_TYPE_TCP_IPV4 0x00000002
556 #define RSS_TYPE_IPV6 0x00000004
557 #define RSS_TYPE_IPV6_EX 0x00000008
558 #define RSS_TYPE_TCP_IPV6 0x00000010
559 #define RSS_TYPE_TCP_IPV6_EX 0x00000020
560 #define RSS_TYPE_UDP_IPV4 0x00000040
561 #define RSS_TYPE_UDP_IPV6 0x00000080
562 #define RSS_TYPE_UDP_IPV6_EX 0x00000100
564 #define RSS_KEYLEN 128
567 char ifrk_name[IFNAMSIZ]; /* if name, e.g. "en0" */
568 uint8_t ifrk_func; /* RSS_FUNC_ */
570 uint16_t ifrk_keylen;
571 uint8_t ifrk_key[RSS_KEYLEN];
575 char ifrh_name[IFNAMSIZ]; /* if name, e.g. "en0" */
576 uint8_t ifrh_func; /* RSS_FUNC_ */
578 uint16_t ifrh_spare1;
579 uint32_t ifrh_types; /* RSS_TYPE_ */
582 #define IFNET_PCP_NONE 0xff /* PCP disabled */
584 #endif /* __BSD_VISIBLE */
587 #ifdef MALLOC_DECLARE
588 MALLOC_DECLARE(M_IFADDR);
589 MALLOC_DECLARE(M_IFMADDR);
594 struct if_nameindex {
595 unsigned int if_index; /* 1, 2, ... */
596 char *if_name; /* null terminated name: "le0", ... */
600 void if_freenameindex(struct if_nameindex *);
601 char *if_indextoname(unsigned int, char *);
602 struct if_nameindex *if_nameindex(void);
603 unsigned int if_nametoindex(const char *);
606 #endif /* !_NET_IF_H_ */