if.h (20407) | if.h (21259) |
---|---|
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 --- 17 unchanged lines hidden (view full) --- 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)if.h 8.1 (Berkeley) 6/10/93 | 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 --- 17 unchanged lines hidden (view full) --- 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)if.h 8.1 (Berkeley) 6/10/93 |
34 * $Id: if.h,v 1.40 1996/12/11 20:38:14 wollman Exp $ | 34 * $Id: if.h,v 1.41 1996/12/13 21:28:37 wollman Exp $ |
35 */ 36 37#ifndef _NET_IF_H_ 38#define _NET_IF_H_ 39 40/* | 35 */ 36 37#ifndef _NET_IF_H_ 38#define _NET_IF_H_ 39 40/* |
41 * Structures defining a network interface, providing a packet 42 * transport mechanism (ala level 0 of the PUP protocols). 43 * 44 * Each interface accepts output datagrams of a specified maximum 45 * length, and provides higher level routines with input datagrams 46 * received from its medium. 47 * 48 * Output occurs when the routine if_output is called, with three parameters: 49 * (*ifp->if_output)(ifp, m, dst, rt) 50 * Here m is the mbuf chain to be sent and dst is the destination address. 51 * The output routine encapsulates the supplied datagram if necessary, 52 * and then transmits it on its medium. 53 * 54 * On input, each interface unwraps the data received by it, and either 55 * places it on the input queue of a internetwork datagram routine 56 * and posts the associated software interrupt, or passes the datagram to a raw 57 * packet input routine. 58 * 59 * Routines exist for locating interfaces by their addresses 60 * or for locating a interface on a certain network, as well as more general 61 * routing and gateway routines maintaining information used to locate 62 * interfaces. These routines live in the files if.c and route.c 63 */ 64 65#ifdef __STDC__ 66/* 67 * Forward structure declarations for function prototypes [sic]. 68 */ 69struct mbuf; 70struct proc; 71struct rtentry; 72struct socket; 73struct ether_header; 74#endif 75 76#include <sys/queue.h> /* get TAILQ macros */ 77 78TAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 79TAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 80 81/* | |
82 * Structure describing information about an interface 83 * which may be of interest to management entities. 84 */ 85struct if_data { 86 /* generic interface information */ 87 u_char ifi_type; /* ethernet, tokenring, etc */ 88 u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */ 89 u_char ifi_addrlen; /* media address length */ --- 15 unchanged lines hidden (view full) --- 105 u_long ifi_omcasts; /* packets sent via multicast */ 106 u_long ifi_iqdrops; /* dropped on input, this interface */ 107 u_long ifi_noproto; /* destined for unsupported protocol */ 108 u_long ifi_recvtiming; /* usec spent receiving when timing */ 109 u_long ifi_xmittiming; /* usec spent xmitting when timing */ 110 struct timeval ifi_lastchange; /* time of last administrative change */ 111}; 112 | 41 * Structure describing information about an interface 42 * which may be of interest to management entities. 43 */ 44struct if_data { 45 /* generic interface information */ 46 u_char ifi_type; /* ethernet, tokenring, etc */ 47 u_char ifi_physical; /* e.g., AUI, Thinnet, 10base-T, etc */ 48 u_char ifi_addrlen; /* media address length */ --- 15 unchanged lines hidden (view full) --- 64 u_long ifi_omcasts; /* packets sent via multicast */ 65 u_long ifi_iqdrops; /* dropped on input, this interface */ 66 u_long ifi_noproto; /* destined for unsupported protocol */ 67 u_long ifi_recvtiming; /* usec spent receiving when timing */ 68 u_long ifi_xmittiming; /* usec spent xmitting when timing */ 69 struct timeval ifi_lastchange; /* time of last administrative change */ 70}; 71 |
113/* 114 * Structure defining a queue for a network interface. 115 */ 116struct ifqueue { 117 struct mbuf *ifq_head; 118 struct mbuf *ifq_tail; 119 int ifq_len; 120 int ifq_maxlen; 121 int ifq_drops; 122}; 123 124/* 125 * Structure defining a network interface. 126 * 127 * (Would like to call this struct ``if'', but C isn't PL/1.) 128 */ 129struct ifnet { 130 void *if_softc; /* pointer to driver state */ 131 char *if_name; /* name, e.g. ``en'' or ``lo'' */ 132 TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 133 struct ifaddrhead if_addrhead; /* linked list of addresses per if */ 134 int if_pcount; /* number of promiscuous listeners */ 135 struct bpf_if *if_bpf; /* packet filter structure */ 136 u_short if_index; /* numeric abbreviation for this if */ 137 short if_unit; /* sub-unit for lower level driver */ 138 short if_timer; /* time 'til if_watchdog called */ 139 short if_flags; /* up/down, broadcast, etc. */ 140 int if_ipending; /* interrupts pending */ 141 void *if_linkmib; /* link-type-specific MIB data */ 142 size_t if_linkmiblen; /* length of above data */ 143 struct if_data if_data; 144/* procedure handles */ 145 int (*if_output) /* output routine (enqueue) */ 146 __P((struct ifnet *, struct mbuf *, struct sockaddr *, 147 struct rtentry *)); 148 void (*if_start) /* initiate output routine */ 149 __P((struct ifnet *)); 150 int (*if_done) /* output complete routine */ 151 __P((struct ifnet *)); /* (XXX not used; fake prototype) */ 152 int (*if_ioctl) /* ioctl routine */ 153 __P((struct ifnet *, int, caddr_t)); 154 void (*if_watchdog) /* timer routine */ 155 __P((struct ifnet *)); 156 int (*if_poll_recv) /* polled receive routine */ 157 __P((struct ifnet *, int *)); 158 int (*if_poll_xmit) /* polled transmit routine */ 159 __P((struct ifnet *, int *)); 160 void (*if_poll_intren) /* polled interrupt reenable routine */ 161 __P((struct ifnet *)); 162 void (*if_poll_slowinput) /* input routine for slow devices */ 163 __P((struct ifnet *, struct mbuf *)); 164 void (*if_init) /* Init routine */ 165 __P((void *)); 166 struct ifqueue if_snd; /* output queue */ 167 struct ifqueue *if_poll_slowq; /* input queue for slow devices */ 168}; 169typedef void if_init_f_t __P((void *)); 170 171#define if_mtu if_data.ifi_mtu 172#define if_type if_data.ifi_type 173#define if_physical if_data.ifi_physical 174#define if_addrlen if_data.ifi_addrlen 175#define if_hdrlen if_data.ifi_hdrlen 176#define if_metric if_data.ifi_metric 177#define if_baudrate if_data.ifi_baudrate 178#define if_ipackets if_data.ifi_ipackets 179#define if_ierrors if_data.ifi_ierrors 180#define if_opackets if_data.ifi_opackets 181#define if_oerrors if_data.ifi_oerrors 182#define if_collisions if_data.ifi_collisions 183#define if_ibytes if_data.ifi_ibytes 184#define if_obytes if_data.ifi_obytes 185#define if_imcasts if_data.ifi_imcasts 186#define if_omcasts if_data.ifi_omcasts 187#define if_iqdrops if_data.ifi_iqdrops 188#define if_noproto if_data.ifi_noproto 189#define if_lastchange if_data.ifi_lastchange 190#define if_recvquota if_data.ifi_recvquota 191#define if_xmitquota if_data.ifi_xmitquota 192#define if_rawoutput(if, m, sa) if_output(if, m, sa, (struct rtentry *)0) 193 | |
194#define IFF_UP 0x1 /* interface is up */ 195#define IFF_BROADCAST 0x2 /* broadcast address valid */ 196#define IFF_DEBUG 0x4 /* turn on debugging */ 197#define IFF_LOOPBACK 0x8 /* is a loopback net */ 198#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 199/*#define IFF_NOTRAILERS 0x20 * obsolete: avoid use of trailers */ 200#define IFF_RUNNING 0x40 /* resources allocated */ 201#define IFF_NOARP 0x80 /* no address resolution protocol */ --- 7 unchanged lines hidden (view full) --- 209#define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */ 210#define IFF_MULTICAST 0x8000 /* supports multicast */ 211 212/* flags set internally only: */ 213#define IFF_CANTCHANGE \ 214 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 215 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI) 216 | 72#define IFF_UP 0x1 /* interface is up */ 73#define IFF_BROADCAST 0x2 /* broadcast address valid */ 74#define IFF_DEBUG 0x4 /* turn on debugging */ 75#define IFF_LOOPBACK 0x8 /* is a loopback net */ 76#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 77/*#define IFF_NOTRAILERS 0x20 * obsolete: avoid use of trailers */ 78#define IFF_RUNNING 0x40 /* resources allocated */ 79#define IFF_NOARP 0x80 /* no address resolution protocol */ --- 7 unchanged lines hidden (view full) --- 87#define IFF_ALTPHYS IFF_LINK2 /* use alternate physical connection */ 88#define IFF_MULTICAST 0x8000 /* supports multicast */ 89 90/* flags set internally only: */ 91#define IFF_CANTCHANGE \ 92 (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ 93 IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI) 94 |
217 218/* 219 * These really don't belong here, but there's no other obviously appropriate 220 * location. 221 */ 222#define IFP_AUI 0 223#define IFP_10BASE2 1 224#define IFP_10BASET 2 225/* etc. */ 226 227/* 228 * Bit values in if_ipending 229 */ 230#define IFI_RECV 1 /* I want to receive */ 231#define IFI_XMIT 2 /* I want to transmit */ 232 233/* 234 * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq) 235 * are queues of messages stored on ifqueue structures 236 * (defined above). Entries are added to and deleted from these structures 237 * by these macros, which should be called with ipl raised to splimp(). 238 */ 239#define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 240#define IF_DROP(ifq) ((ifq)->ifq_drops++) 241#define IF_ENQUEUE(ifq, m) { \ 242 (m)->m_nextpkt = 0; \ 243 if ((ifq)->ifq_tail == 0) \ 244 (ifq)->ifq_head = m; \ 245 else \ 246 (ifq)->ifq_tail->m_nextpkt = m; \ 247 (ifq)->ifq_tail = m; \ 248 (ifq)->ifq_len++; \ 249} 250#define IF_PREPEND(ifq, m) { \ 251 (m)->m_nextpkt = (ifq)->ifq_head; \ 252 if ((ifq)->ifq_tail == 0) \ 253 (ifq)->ifq_tail = (m); \ 254 (ifq)->ifq_head = (m); \ 255 (ifq)->ifq_len++; \ 256} 257#define IF_DEQUEUE(ifq, m) { \ 258 (m) = (ifq)->ifq_head; \ 259 if (m) { \ 260 if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ 261 (ifq)->ifq_tail = 0; \ 262 (m)->m_nextpkt = 0; \ 263 (ifq)->ifq_len--; \ 264 } \ 265} 266 267#ifdef KERNEL 268#define IF_ENQ_DROP(ifq, m) if_enq_drop(ifq, m) 269 270#if defined(__GNUC__) && defined(MT_HEADER) 271static inline int 272if_queue_drop(struct ifqueue *ifq, struct mbuf *m) 273{ 274 IF_DROP(ifq); 275 return 0; 276} 277 278static inline int 279if_enq_drop(struct ifqueue *ifq, struct mbuf *m) 280{ 281 if (IF_QFULL(ifq) && 282 !if_queue_drop(ifq, m)) 283 return 0; 284 IF_ENQUEUE(ifq, m); 285 return 1; 286} 287#else 288 289#ifdef MT_HEADER 290int if_enq_drop __P((struct ifqueue *, struct mbuf *)); 291#endif 292 293#endif 294#endif /* KERNEL */ 295 | |
296#define IFQ_MAXLEN 50 297#define IFNET_SLOWHZ 1 /* granularity is 1 second */ 298 299/* | 95#define IFQ_MAXLEN 50 96#define IFNET_SLOWHZ 1 /* granularity is 1 second */ 97 98/* |
300 * The ifaddr structure contains information about one address 301 * of an interface. They are maintained by the different address families, 302 * are allocated and attached when an address is set, and are linked 303 * together so all addresses for an interface can be located. 304 */ 305struct ifaddr { 306 struct sockaddr *ifa_addr; /* address of interface */ 307 struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 308#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 309 struct sockaddr *ifa_netmask; /* used to determine subnet */ 310 struct ifnet *ifa_ifp; /* back-pointer to interface */ 311 TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 312 void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 313 __P((int, struct rtentry *, struct sockaddr *)); 314 u_short ifa_flags; /* mostly rt_flags for cloning */ 315 short ifa_refcnt; /* references to this structure */ 316 int ifa_metric; /* cost of going out this interface */ 317#ifdef notdef 318 struct rtentry *ifa_rt; /* XXXX for ROUTETOIF ????? */ 319#endif 320}; 321#define IFA_ROUTE RTF_UP /* route installed */ 322 323/* | |
324 * Message format for use in obtaining information about interfaces 325 * from getkerninfo and the routing socket 326 */ 327struct if_msghdr { 328 u_short ifm_msglen; /* to skip over non-understood messages */ 329 u_char ifm_version; /* future binary compatability */ 330 u_char ifm_type; /* message type */ 331 int ifm_addrs; /* like rtm_addrs */ --- 63 unchanged lines hidden (view full) --- 395 union { 396 caddr_t ifcu_buf; 397 struct ifreq *ifcu_req; 398 } ifc_ifcu; 399#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 400#define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 401}; 402 | 99 * Message format for use in obtaining information about interfaces 100 * from getkerninfo and the routing socket 101 */ 102struct if_msghdr { 103 u_short ifm_msglen; /* to skip over non-understood messages */ 104 u_char ifm_version; /* future binary compatability */ 105 u_char ifm_type; /* message type */ 106 int ifm_addrs; /* like rtm_addrs */ --- 63 unchanged lines hidden (view full) --- 170 union { 171 caddr_t ifcu_buf; 172 struct ifreq *ifcu_req; 173 } ifc_ifcu; 174#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ 175#define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ 176}; 177 |
178/* XXX - this should go away soon */ |
|
403#ifdef KERNEL | 179#ifdef KERNEL |
404#define IFAFREE(ifa) \ 405 if ((ifa)->ifa_refcnt <= 0) \ 406 ifafree(ifa); \ 407 else \ 408 (ifa)->ifa_refcnt--; 409 410extern struct ifnethead ifnet; 411extern int ifqmaxlen; 412extern struct ifnet loif[]; 413extern int if_index; 414extern struct ifaddr **ifnet_addrs; 415 416void ether_ifattach __P((struct ifnet *)); 417void ether_input __P((struct ifnet *, struct ether_header *, struct mbuf *)); 418int ether_output __P((struct ifnet *, 419 struct mbuf *, struct sockaddr *, struct rtentry *)); 420int ether_ioctl __P((struct ifnet *, int, caddr_t)); 421 422void if_attach __P((struct ifnet *)); 423void if_down __P((struct ifnet *)); 424void if_up __P((struct ifnet *)); 425#ifdef vax 426void ifubareset __P((int)); | 180#include <net/if_var.h> |
427#endif | 181#endif |
428/*void ifinit __P((void));*/ /* declared in systm.h for main() */ 429int ifioctl __P((struct socket *, int, caddr_t, struct proc *)); 430int ifpromisc __P((struct ifnet *, int)); 431struct ifnet *ifunit __P((char *)); | |
432 | 182 |
433int if_poll_recv_slow __P((struct ifnet *ifp, int *quotap)); 434void if_poll_xmit_slow __P((struct ifnet *ifp, int *quotap)); 435void if_poll_throttle __P((void)); 436void if_poll_unthrottle __P((void *)); 437void if_poll_init __P((void)); 438void if_poll __P((void)); 439 440struct ifaddr *ifa_ifwithaddr __P((struct sockaddr *)); 441struct ifaddr *ifa_ifwithdstaddr __P((struct sockaddr *)); 442struct ifaddr *ifa_ifwithnet __P((struct sockaddr *)); 443struct ifaddr *ifa_ifwithroute __P((int, struct sockaddr *, 444 struct sockaddr *)); 445struct ifaddr *ifaof_ifpforaddr __P((struct sockaddr *, struct ifnet *)); 446void ifafree __P((struct ifaddr *)); 447 448int looutput __P((struct ifnet *, 449 struct mbuf *, struct sockaddr *, struct rtentry *)); 450#endif /* KERNEL */ 451 | |
452#endif /* !_NET_IF_H_ */ | 183#endif /* !_NET_IF_H_ */ |