1 /*- 2 * Copyright (c) 1982, 1986, 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)if.h 8.1 (Berkeley) 6/10/93 30 * $FreeBSD$ 31 */ 32 33 #ifndef _NET_IF_H_ 34 #define _NET_IF_H_ 35 36 #include <sys/time.h> 37 #include "sys/socket.h" 38 39 /* 40 * Length of interface external name, including terminating '\0'. 41 * Note: this is the same size as a generic device's external name. 42 */ 43 #define IF_NAMESIZE 16 44 #define IFNAMSIZ IF_NAMESIZE 45 #define IF_MAXUNIT 0x7fff /* historical value */ 46 47 /* 48 * Structure used to query names of interface cloners. 49 */ 50 51 struct if_clonereq { 52 int ifcr_total; /* total cloners (out) */ 53 int ifcr_count; /* room for this many in user buffer */ 54 char *ifcr_buffer; /* buffer for cloner names */ 55 }; 56 57 /* 58 * Structure describing information about an interface 59 * which may be of interest to management entities. 60 */ 61 struct if_data { 62 /* generic interface information */ 63 uint8_t ifi_type; /* ethernet, tokenring, etc */ 64 uint8_t ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */ 65 uint8_t ifi_addrlen; /* media address length */ 66 uint8_t ifi_hdrlen; /* media header length */ 67 uint8_t ifi_link_state; /* current link state */ 68 uint8_t ifi_vhid; /* carp vhid */ 69 uint16_t ifi_datalen; /* length of this data struct */ 70 uint32_t ifi_mtu; /* maximum transmission unit */ 71 uint32_t ifi_metric; /* routing metric (external only) */ 72 uint64_t ifi_baudrate; /* linespeed */ 73 /* volatile statistics */ 74 uint64_t ifi_ipackets; /* packets received on interface */ 75 uint64_t ifi_ierrors; /* input errors on interface */ 76 uint64_t ifi_opackets; /* packets sent on interface */ 77 uint64_t ifi_oerrors; /* output errors on interface */ 78 uint64_t ifi_collisions; /* collisions on csma interfaces */ 79 uint64_t ifi_ibytes; /* total number of octets received */ 80 uint64_t ifi_obytes; /* total number of octets sent */ 81 uint64_t ifi_imcasts; /* packets received via multicast */ 82 uint64_t ifi_omcasts; /* packets sent via multicast */ 83 uint64_t ifi_iqdrops; /* dropped on input */ 84 uint64_t ifi_oqdrops; /* dropped on output */ 85 uint64_t ifi_noproto; /* destined for unsupported protocol */ 86 uint64_t ifi_hwassist; /* HW offload capabilities, see IFCAP */ 87 88 /* Unions are here to make sizes MI. */ 89 union { /* uptime at attach or stat reset */ 90 time_t tt; 91 uint64_t ph; 92 } __ifi_epoch; 93 #define ifi_epoch __ifi_epoch.tt 94 union { /* time of last administrative change */ 95 struct timeval tv; 96 struct { 97 uint64_t ph1; 98 uint64_t ph2; 99 } ph; 100 } __ifi_lastchange; 101 #define ifi_lastchange __ifi_lastchange.tv 102 }; 103 104 /*- 105 * Interface flags are of two types: network stack owned flags, and driver 106 * owned flags. Historically, these values were stored in the same ifnet 107 * flags field, but with the advent of fine-grained locking, they have been 108 * broken out such that the network stack is responsible for synchronizing 109 * the stack-owned fields, and the device driver the device-owned fields. 110 * Both halves can perform lockless reads of the other half's field, subject 111 * to accepting the involved races. 112 * 113 * Both sets of flags come from the same number space, and should not be 114 * permitted to conflict, as they are exposed to user space via a single 115 * field. 116 * 117 * The following symbols identify read and write requirements for fields: 118 * 119 * (i) if_flags field set by device driver before attach, read-only there 120 * after. 121 * (n) if_flags field written only by the network stack, read by either the 122 * stack or driver. 123 * (d) if_drv_flags field written only by the device driver, read by either 124 * the stack or driver. 125 */ 126 #define IFF_UP 0x1 /* (n) interface is up */ 127 #define IFF_BROADCAST 0x2 /* (i) broadcast address valid */ 128 #define IFF_DEBUG 0x4 /* (n) turn on debugging */ 129 #define IFF_LOOPBACK 0x8 /* (i) is a loopback net */ 130 #define IFF_POINTOPOINT 0x10 /* (i) is a point-to-point link */ 131 /* 0x20 was IFF_SMART */ 132 #define IFF_DRV_RUNNING 0x40 /* (d) resources allocated */ 133 #define IFF_NOARP 0x80 /* (n) no address resolution protocol */ 134 #define IFF_PROMISC 0x100 /* (n) receive all packets */ 135 #define IFF_ALLMULTI 0x200 /* (n) receive all multicast packets */ 136 #define IFF_DRV_OACTIVE 0x400 /* (d) tx hardware queue is full */ 137 #define IFF_SIMPLEX 0x800 /* (i) can't hear own transmissions */ 138 #define IFF_LINK0 0x1000 /* per link layer defined bit */ 139 #define IFF_LINK1 0x2000 /* per link layer defined bit */ 140 #define IFF_LINK2 0x4000 /* per link layer defined bit */ 141 #define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */ 142 #define IFF_MULTICAST 0x8000 /* (i) supports multicast */ 143 #define IFF_CANTCONFIG 0x10000 /* (i) unconfigurable using ioctl(2) */ 144 #define IFF_PPROMISC 0x20000 /* (n) user-requested promisc mode */ 145 #define IFF_MONITOR 0x40000 /* (n) user-requested monitor mode */ 146 #define IFF_STATICARP 0x80000 /* (n) static ARP */ 147 #define IFF_DYING 0x200000 /* (n) interface is winding down */ 148 #define IFF_RENAMING 0x400000 /* (n) interface is being renamed */ 149 /* 150 * Old names for driver flags so that user space tools can continue to use 151 * the old (portable) names. 152 */ 153 #ifndef _KERNEL 154 #define IFF_RUNNING IFF_DRV_RUNNING 155 #define IFF_OACTIVE IFF_DRV_OACTIVE 156 #endif 157 158 /* flags set internally only: */ 159 #define IFF_CANTCHANGE \ 160 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_DRV_RUNNING|IFF_DRV_OACTIVE|\ 161 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC|\ 162 IFF_DYING|IFF_CANTCONFIG) 163 164 /* 165 * Values for if_link_state. 166 */ 167 #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ 168 #define LINK_STATE_DOWN 1 /* link is down */ 169 #define LINK_STATE_UP 2 /* link is up */ 170 171 /* 172 * Some convenience macros used for setting ifi_baudrate. 173 * XXX 1000 vs. 1024? [email protected] 174 */ 175 #define IF_Kbps(x) ((uintmax_t)(x) * 1000) /* kilobits/sec. */ 176 #define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */ 177 #define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */ 178 179 /* 180 * Capabilities that interfaces can advertise. 181 * 182 * struct ifnet.if_capabilities 183 * contains the optional features & capabilities a particular interface 184 * supports (not only the driver but also the detected hw revision). 185 * Capabilities are defined by IFCAP_* below. 186 * struct ifnet.if_capenable 187 * contains the enabled (either by default or through ifconfig) optional 188 * features & capabilities on this interface. 189 * Capabilities are defined by IFCAP_* below. 190 * struct if_data.ifi_hwassist in mbuf CSUM_ flag form, controlled by above 191 * contains the enabled optional feature & capabilites that can be used 192 * individually per packet and are specified in the mbuf pkthdr.csum_flags 193 * field. IFCAP_* and CSUM_* do not match one to one and CSUM_* may be 194 * more detailed or differenciated than IFCAP_*. 195 * Hwassist features are defined CSUM_* in sys/mbuf.h 196 * 197 * Capabilities that cannot be arbitrarily changed with ifconfig/ioctl 198 * are listed in IFCAP_CANTCHANGE, similar to IFF_CANTCHANGE. 199 * This is not strictly necessary because the common code never 200 * changes capabilities, and it is left to the individual driver 201 * to do the right thing. However, having the filter here 202 * avoids replication of the same code in all individual drivers. 203 */ 204 #define IFCAP_RXCSUM 0x00001 /* can offload checksum on RX */ 205 #define IFCAP_TXCSUM 0x00002 /* can offload checksum on TX */ 206 #define IFCAP_NETCONS 0x00004 /* can be a network console */ 207 #define IFCAP_VLAN_MTU 0x00008 /* VLAN-compatible MTU */ 208 #define IFCAP_VLAN_HWTAGGING 0x00010 /* hardware VLAN tag support */ 209 #define IFCAP_JUMBO_MTU 0x00020 /* 9000 byte MTU supported */ 210 #define IFCAP_POLLING 0x00040 /* driver supports polling */ 211 #define IFCAP_VLAN_HWCSUM 0x00080 /* can do IFCAP_HWCSUM on VLANs */ 212 #define IFCAP_TSO4 0x00100 /* can do TCP Segmentation Offload */ 213 #define IFCAP_TSO6 0x00200 /* can do TCP6 Segmentation Offload */ 214 #define IFCAP_LRO 0x00400 /* can do Large Receive Offload */ 215 #define IFCAP_WOL_UCAST 0x00800 /* wake on any unicast frame */ 216 #define IFCAP_WOL_MCAST 0x01000 /* wake on any multicast frame */ 217 #define IFCAP_WOL_MAGIC 0x02000 /* wake on any Magic Packet */ 218 #define IFCAP_TOE4 0x04000 /* interface can offload TCP */ 219 #define IFCAP_TOE6 0x08000 /* interface can offload TCP6 */ 220 #define IFCAP_VLAN_HWFILTER 0x10000 /* interface hw can filter vlan tag */ 221 #define IFCAP_POLLING_NOCOUNT 0x20000 /* polling ticks cannot be fragmented */ 222 #define IFCAP_VLAN_HWTSO 0x40000 /* can do IFCAP_TSO on VLANs */ 223 #define IFCAP_LINKSTATE 0x80000 /* the runtime link state is dynamic */ 224 #define IFCAP_NETMAP 0x100000 /* netmap mode supported/enabled */ 225 #define IFCAP_RXCSUM_IPV6 0x200000 /* can offload checksum on IPv6 RX */ 226 #define IFCAP_TXCSUM_IPV6 0x400000 /* can offload checksum on IPv6 TX */ 227 #define IFCAP_HWSTATS 0x800000 /* manages counters internally */ 228 229 #define IFCAP_HWCSUM_IPV6 (IFCAP_RXCSUM_IPV6 | IFCAP_TXCSUM_IPV6) 230 231 #define IFCAP_HWCSUM (IFCAP_RXCSUM | IFCAP_TXCSUM) 232 #define IFCAP_TSO (IFCAP_TSO4 | IFCAP_TSO6) 233 #define IFCAP_WOL (IFCAP_WOL_UCAST | IFCAP_WOL_MCAST | IFCAP_WOL_MAGIC) 234 #define IFCAP_TOE (IFCAP_TOE4 | IFCAP_TOE6) 235 236 #define IFCAP_CANTCHANGE (IFCAP_NETMAP) 237 238 #define IFQ_MAXLEN 50 239 #define IFNET_SLOWHZ 1 /* granularity is 1 second */ 240 241 /* 242 * Message format for use in obtaining information about interfaces 243 * from getkerninfo and the routing socket 244 * For the new, extensible interface see struct if_msghdrl below. 245 */ 246 struct if_msghdr { 247 u_short ifm_msglen; /* to skip over non-understood messages */ 248 u_char ifm_version; /* future binary compatibility */ 249 u_char ifm_type; /* message type */ 250 int ifm_addrs; /* like rtm_addrs */ 251 int ifm_flags; /* value of if_flags */ 252 u_short ifm_index; /* index for associated ifp */ 253 struct if_data ifm_data;/* statistics and other data about if */ 254 }; 255 256 /* 257 * The 'l' version shall be used by new interfaces, like NET_RT_IFLISTL. It is 258 * extensible after ifm_data_off or within ifm_data. Both the if_msghdr and 259 * if_data now have a member field detailing the struct length in addition to 260 * the routing message length. Macros are provided to find the start of 261 * ifm_data and the start of the socket address strucutres immediately following 262 * struct if_msghdrl given a pointer to struct if_msghdrl. 263 */ 264 #define IF_MSGHDRL_IFM_DATA(_l) \ 265 (struct if_data *)((char *)(_l) + (_l)->ifm_data_off) 266 #define IF_MSGHDRL_RTA(_l) \ 267 (void *)((uintptr_t)(_l) + (_l)->ifm_len) 268 struct if_msghdrl { 269 u_short ifm_msglen; /* to skip over non-understood messages */ 270 u_char ifm_version; /* future binary compatibility */ 271 u_char ifm_type; /* message type */ 272 int ifm_addrs; /* like rtm_addrs */ 273 int ifm_flags; /* value of if_flags */ 274 u_short ifm_index; /* index for associated ifp */ 275 u_short _ifm_spare1; /* spare space to grow if_index, see if_var.h */ 276 u_short ifm_len; /* length of if_msghdrl incl. if_data */ 277 u_short ifm_data_off; /* offset of if_data from beginning */ 278 struct if_data ifm_data;/* statistics and other data about if */ 279 }; 280 281 /* 282 * Message format for use in obtaining information about interface addresses 283 * from getkerninfo and the routing socket 284 * For the new, extensible interface see struct ifa_msghdrl below. 285 */ 286 struct ifa_msghdr { 287 u_short ifam_msglen; /* to skip over non-understood messages */ 288 u_char ifam_version; /* future binary compatibility */ 289 u_char ifam_type; /* message type */ 290 int ifam_addrs; /* like rtm_addrs */ 291 int ifam_flags; /* value of ifa_flags */ 292 u_short ifam_index; /* index for associated ifp */ 293 int ifam_metric; /* value of ifa_ifp->if_metric */ 294 }; 295 296 /* 297 * The 'l' version shall be used by new interfaces, like NET_RT_IFLISTL. It is 298 * extensible after ifam_metric or within ifam_data. Both the ifa_msghdrl and 299 * if_data now have a member field detailing the struct length in addition to 300 * the routing message length. Macros are provided to find the start of 301 * ifm_data and the start of the socket address strucutres immediately following 302 * struct ifa_msghdrl given a pointer to struct ifa_msghdrl. 303 */ 304 #define IFA_MSGHDRL_IFAM_DATA(_l) \ 305 (struct if_data *)((char *)(_l) + (_l)->ifam_data_off) 306 #define IFA_MSGHDRL_RTA(_l) \ 307 (void *)((uintptr_t)(_l) + (_l)->ifam_len) 308 struct ifa_msghdrl { 309 u_short ifam_msglen; /* to skip over non-understood messages */ 310 u_char ifam_version; /* future binary compatibility */ 311 u_char ifam_type; /* message type */ 312 int ifam_addrs; /* like rtm_addrs */ 313 int ifam_flags; /* value of ifa_flags */ 314 u_short ifam_index; /* index for associated ifp */ 315 u_short _ifam_spare1; /* spare space to grow if_index, see if_var.h */ 316 u_short ifam_len; /* length of ifa_msghdrl incl. if_data */ 317 u_short ifam_data_off; /* offset of if_data from beginning */ 318 int ifam_metric; /* value of ifa_ifp->if_metric */ 319 struct if_data ifam_data;/* statistics and other data about if or 320 * address */ 321 }; 322 323 /* 324 * Message format for use in obtaining information about multicast addresses 325 * from the routing socket 326 */ 327 struct ifma_msghdr { 328 u_short ifmam_msglen; /* to skip over non-understood messages */ 329 u_char ifmam_version; /* future binary compatibility */ 330 u_char ifmam_type; /* message type */ 331 int ifmam_addrs; /* like rtm_addrs */ 332 int ifmam_flags; /* value of ifa_flags */ 333 u_short ifmam_index; /* index for associated ifp */ 334 }; 335 336 /* 337 * Message format announcing the arrival or departure of a network interface. 338 */ 339 struct if_announcemsghdr { 340 u_short ifan_msglen; /* to skip over non-understood messages */ 341 u_char ifan_version; /* future binary compatibility */ 342 u_char ifan_type; /* message type */ 343 u_short ifan_index; /* index for associated ifp */ 344 char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 345 u_short ifan_what; /* what type of announcement */ 346 }; 347 348 #define IFAN_ARRIVAL 0 /* interface arrival */ 349 #define IFAN_DEPARTURE 1 /* interface departure */ 350 351 /* 352 * Buffer with length to be used in SIOCGIFDESCR/SIOCSIFDESCR requests 353 */ 354 struct ifreq_buffer { 355 size_t length; 356 void *buffer; 357 }; 358 359 /* 360 * Interface request structure used for socket 361 * ioctl's. All interface ioctl's must have parameter 362 * definitions which begin with ifr_name. The 363 * remainder may be interface specific. 364 */ 365 struct ifreq { 366 char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 367 union { 368 struct sockaddr ifru_addr; 369 struct sockaddr ifru_dstaddr; 370 struct sockaddr ifru_broadaddr; 371 struct ifreq_buffer ifru_buffer; 372 short ifru_flags[2]; 373 short ifru_index; 374 int ifru_jid; 375 int ifru_metric; 376 int ifru_mtu; 377 int ifru_phys; 378 int ifru_media; 379 caddr_t ifru_data; 380 int ifru_cap[2]; 381 u_int ifru_fib; 382 u_char ifru_vlan_pcp; 383 } ifr_ifru; 384 #define ifr_addr ifr_ifru.ifru_addr /* address */ 385 #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ 386 #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ 387 #define ifr_buffer ifr_ifru.ifru_buffer /* user supplied buffer with its length */ 388 #define ifr_flags ifr_ifru.ifru_flags[0] /* flags (low 16 bits) */ 389 #define ifr_flagshigh ifr_ifru.ifru_flags[1] /* flags (high 16 bits) */ 390 #define ifr_jid ifr_ifru.ifru_jid /* jail/vnet */ 391 #define ifr_metric ifr_ifru.ifru_metric /* metric */ 392 #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ 393 #define ifr_phys ifr_ifru.ifru_phys /* physical wire */ 394 #define ifr_media ifr_ifru.ifru_media /* physical media */ 395 #define ifr_data ifr_ifru.ifru_data /* for use by interface */ 396 #define ifr_reqcap ifr_ifru.ifru_cap[0] /* requested capabilities */ 397 #define ifr_curcap ifr_ifru.ifru_cap[1] /* current capabilities */ 398 #define ifr_index ifr_ifru.ifru_index /* interface index */ 399 #define ifr_fib ifr_ifru.ifru_fib /* interface fib */ 400 #define ifr_vlan_pcp ifr_ifru.ifru_vlan_pcp /* VLAN priority */ 401 }; 402 403 #define _SIZEOF_ADDR_IFREQ(ifr) \ 404 ((ifr).ifr_addr.sa_len > sizeof(struct sockaddr) ? \ 405 (sizeof(struct ifreq) - sizeof(struct sockaddr) + \ 406 (ifr).ifr_addr.sa_len) : sizeof(struct ifreq)) 407 408 struct ifaliasreq { 409 char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 410 struct sockaddr ifra_addr; 411 struct sockaddr ifra_broadaddr; 412 struct sockaddr ifra_mask; 413 int ifra_vhid; 414 }; 415 416 /* 9.x compat */ 417 struct oifaliasreq { 418 char ifra_name[IFNAMSIZ]; 419 struct sockaddr ifra_addr; 420 struct sockaddr ifra_broadaddr; 421 struct sockaddr ifra_mask; 422 }; 423 424 struct ifmediareq { 425 char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 426 int ifm_current; /* current media options */ 427 int ifm_mask; /* don't care mask */ 428 int ifm_status; /* media status */ 429 int ifm_active; /* active options */ 430 int ifm_count; /* # entries in ifm_ulist array */ 431 int *ifm_ulist; /* media words */ 432 }; 433 434 struct ifdrv { 435 char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 436 unsigned long ifd_cmd; 437 size_t ifd_len; 438 void *ifd_data; 439 }; 440 441 /* 442 * Structure used to retrieve aux status data from interfaces. 443 * Kernel suppliers to this interface should respect the formatting 444 * needed by ifconfig(8): each line starts with a TAB and ends with 445 * a newline. The canonical example to copy and paste is in if_tun.c. 446 */ 447 448 #define IFSTATMAX 800 /* 10 lines of text */ 449 struct ifstat { 450 char ifs_name[IFNAMSIZ]; /* if name, e.g. "en0" */ 451 char ascii[IFSTATMAX + 1]; 452 }; 453 454 /* 455 * Structure used in SIOCGIFCONF request. 456 * Used to retrieve interface configuration 457 * for machine (useful for programs which 458 * must know all networks accessible). 459 */ 460 struct ifconf { 461 int ifc_len; /* size of associated buffer */ 462 union { 463 caddr_t ifcu_buf; 464 struct ifreq *ifcu_req; 465 } ifc_ifcu; 466 #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 467 #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 468 }; 469 470 /* 471 * interface groups 472 */ 473 474 #define IFG_ALL "all" /* group contains all interfaces */ 475 /* XXX: will we implement this? */ 476 #define IFG_EGRESS "egress" /* if(s) default route(s) point to */ 477 478 struct ifg_req { 479 union { 480 char ifgrqu_group[IFNAMSIZ]; 481 char ifgrqu_member[IFNAMSIZ]; 482 } ifgrq_ifgrqu; 483 #define ifgrq_group ifgrq_ifgrqu.ifgrqu_group 484 #define ifgrq_member ifgrq_ifgrqu.ifgrqu_member 485 }; 486 487 /* 488 * Used to lookup groups for an interface 489 */ 490 struct ifgroupreq { 491 char ifgr_name[IFNAMSIZ]; 492 u_int ifgr_len; 493 union { 494 char ifgru_group[IFNAMSIZ]; 495 struct ifg_req *ifgru_groups; 496 } ifgr_ifgru; 497 #define ifgr_group ifgr_ifgru.ifgru_group 498 #define ifgr_groups ifgr_ifgru.ifgru_groups 499 }; 500 501 /* 502 * Structure used to request i2c data 503 * from interface transceivers. 504 */ 505 struct ifi2creq { 506 uint8_t dev_addr; /* i2c address (0xA0, 0xA2) */ 507 uint8_t offset; /* read offset */ 508 uint8_t len; /* read length */ 509 uint8_t spare0; 510 uint32_t spare1; 511 uint8_t data[8]; /* read buffer */ 512 }; 513 514 struct if_nameindex { 515 unsigned int if_index; /* 1, 2, ... */ 516 char *if_name; /* null terminated name: "le0", ... */ 517 }; 518 519 void if_freenameindex(struct if_nameindex *); 520 char *if_indextoname(unsigned int, char *); 521 struct if_nameindex *if_nameindex(void); 522 unsigned int if_nametoindex(const char *); 523 524 #endif /* !_NET_IF_H_ */ 525