1139823Simp/*- 221259Swollman * Copyright (c) 1982, 1986, 1989, 1993 321259Swollman * The Regents of the University of California. All rights reserved. 421259Swollman * 521259Swollman * Redistribution and use in source and binary forms, with or without 621259Swollman * modification, are permitted provided that the following conditions 721259Swollman * are met: 821259Swollman * 1. Redistributions of source code must retain the above copyright 921259Swollman * notice, this list of conditions and the following disclaimer. 1021259Swollman * 2. Redistributions in binary form must reproduce the above copyright 1121259Swollman * notice, this list of conditions and the following disclaimer in the 1221259Swollman * documentation and/or other materials provided with the distribution. 1321259Swollman * 4. Neither the name of the University nor the names of its contributors 1421259Swollman * may be used to endorse or promote products derived from this software 1521259Swollman * without specific prior written permission. 1621259Swollman * 1721259Swollman * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 1821259Swollman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1921259Swollman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2021259Swollman * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2121259Swollman * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2221259Swollman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2321259Swollman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2421259Swollman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2521259Swollman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2621259Swollman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2721259Swollman * SUCH DAMAGE. 2821259Swollman * 2921259Swollman * From: @(#)if.h 8.1 (Berkeley) 6/10/93 3050477Speter * $FreeBSD: stable/10/sys/net/if_var.h 318505 2017-05-18 23:41:34Z rpokala $ 3121259Swollman */ 3221259Swollman 3321259Swollman#ifndef _NET_IF_VAR_H_ 3421259Swollman#define _NET_IF_VAR_H_ 3521259Swollman 3621259Swollman/* 3721259Swollman * Structures defining a network interface, providing a packet 3821259Swollman * transport mechanism (ala level 0 of the PUP protocols). 3921259Swollman * 4021259Swollman * Each interface accepts output datagrams of a specified maximum 4121259Swollman * length, and provides higher level routines with input datagrams 4221259Swollman * received from its medium. 4321259Swollman * 4421259Swollman * Output occurs when the routine if_output is called, with three parameters: 4521259Swollman * (*ifp->if_output)(ifp, m, dst, rt) 4621259Swollman * Here m is the mbuf chain to be sent and dst is the destination address. 4721259Swollman * The output routine encapsulates the supplied datagram if necessary, 4821259Swollman * and then transmits it on its medium. 4921259Swollman * 5021259Swollman * On input, each interface unwraps the data received by it, and either 51108533Sschweikh * places it on the input queue of an internetwork datagram routine 5221259Swollman * and posts the associated software interrupt, or passes the datagram to a raw 5321259Swollman * packet input routine. 5421259Swollman * 5521259Swollman * Routines exist for locating interfaces by their addresses 56108533Sschweikh * or for locating an interface on a certain network, as well as more general 5721259Swollman * routing and gateway routines maintaining information used to locate 5821259Swollman * interfaces. These routines live in the files if.c and route.c 5921259Swollman */ 6021259Swollman 6121259Swollman#ifdef __STDC__ 6221259Swollman/* 6321259Swollman * Forward structure declarations for function prototypes [sic]. 6421259Swollman */ 6521259Swollmanstruct mbuf; 6683366Sjulianstruct thread; 6721259Swollmanstruct rtentry; 6885074Srustruct rt_addrinfo; 6921259Swollmanstruct socket; 7021259Swollmanstruct ether_header; 71142215Sglebiusstruct carp_if; 72228571Sglebiusstruct carp_softc; 73155051Sglebiusstruct ifvlantrunk; 74191148Skmacystruct route; 75193731Szecstruct vnet; 7621259Swollman#endif 7721259Swollman 7821259Swollman#include <sys/queue.h> /* get TAILQ macros */ 7921259Swollman 8069224Sjlemon#ifdef _KERNEL 8169152Sjlemon#include <sys/mbuf.h> 82126264Smlaier#include <sys/eventhandler.h> 83186207Skmacy#include <sys/buf_ring.h> 84195699Srwatson#include <net/vnet.h> 8569224Sjlemon#endif /* _KERNEL */ 8674914Sjhb#include <sys/lock.h> /* XXX */ 8774914Sjhb#include <sys/mutex.h> /* XXX */ 88186199Skmacy#include <sys/rwlock.h> /* XXX */ 89196481Srwatson#include <sys/sx.h> /* XXX */ 9083130Sjlemon#include <sys/event.h> /* XXX */ 91132712Srwatson#include <sys/_task.h> 9269152Sjlemon 93121816Sbrooks#define IF_DUNIT_NONE -1 94121816Sbrooks 95130416Smlaier#include <altq/if_altq.h> 96130416Smlaier 9760938SjakeTAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 9860938SjakeTAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 9972084SphkTAILQ_HEAD(ifmultihead, ifmultiaddr); 100159781SmlaierTAILQ_HEAD(ifgrouphead, ifg_group); 10121259Swollman 102240112Smelifaro#ifdef _KERNEL 103240099SmelifaroVNET_DECLARE(struct pfil_head, link_pfil_hook); /* packet filter hooks */ 104240099Smelifaro#define V_link_pfil_hook VNET(link_pfil_hook) 105240112Smelifaro#endif /* _KERNEL */ 106240099Smelifaro 107276124Saetypedef enum { 108276124Sae IFCOUNTER_IPACKETS = 0, 109276124Sae IFCOUNTER_IERRORS, 110276124Sae IFCOUNTER_OPACKETS, 111276124Sae IFCOUNTER_OERRORS, 112276124Sae IFCOUNTER_COLLISIONS, 113276124Sae IFCOUNTER_IBYTES, 114276124Sae IFCOUNTER_OBYTES, 115276124Sae IFCOUNTER_IMCASTS, 116276124Sae IFCOUNTER_OMCASTS, 117276124Sae IFCOUNTER_IQDROPS, 118276124Sae IFCOUNTER_OQDROPS, 119276124Sae IFCOUNTER_NOPROTO, 120276124Sae IFCOUNTERS /* Array size. */ 121276124Sae} ift_counter; 122276124Sae 12321259Swollman/* 12421259Swollman * Structure defining a queue for a network interface. 12521259Swollman */ 12621259Swollmanstruct ifqueue { 12721259Swollman struct mbuf *ifq_head; 12821259Swollman struct mbuf *ifq_tail; 12921259Swollman int ifq_len; 13021259Swollman int ifq_maxlen; 13121259Swollman int ifq_drops; 13269152Sjlemon struct mtx ifq_mtx; 13321259Swollman}; 13421259Swollman 135274043Shselaskystruct ifnet_hw_tsomax { 136274043Shselasky u_int tsomaxbytes; /* TSO total burst length limit in bytes */ 137274043Shselasky u_int tsomaxsegcount; /* TSO maximum segment count */ 138274043Shselasky u_int tsomaxsegsize; /* TSO maximum segment size in bytes */ 139274043Shselasky}; 140274043Shselasky 14121259Swollman/* 14221259Swollman * Structure defining a network interface. 14321259Swollman * 14421259Swollman * (Would like to call this struct ``if'', but C isn't PL/1.) 14521259Swollman */ 14684380Smjacob 14721259Swollmanstruct ifnet { 14821259Swollman void *if_softc; /* pointer to driver state */ 149147256Sbrooks void *if_l2com; /* pointer to protocol bits */ 150191688Szec struct vnet *if_vnet; /* pointer to network stack instance */ 15160938Sjake TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 152121816Sbrooks char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 153121816Sbrooks const char *if_dname; /* driver name */ 154121816Sbrooks int if_dunit; /* unit or IF_DUNIT_NONE */ 155191367Srwatson u_int if_refcount; /* reference count */ 15621259Swollman struct ifaddrhead if_addrhead; /* linked list of addresses per if */ 157128291Sluigi /* 158128291Sluigi * if_addrhead is the list of all addresses associated to 159128315Sluigi * an interface. 160128315Sluigi * Some code in the kernel assumes that first element 161128315Sluigi * of the list has type AF_LINK, and contains sockaddr_dl 162128315Sluigi * addresses which store the link-level address and the name 163128291Sluigi * of the interface. 164128315Sluigi * However, access to the AF_LINK address through this 165152315Sru * field is deprecated. Use if_addr or ifaddr_byindex() instead. 166128291Sluigi */ 16783130Sjlemon int if_pcount; /* number of promiscuous listeners */ 168142901Sglebius struct carp_if *if_carp; /* carp interface structure */ 16921259Swollman struct bpf_if *if_bpf; /* packet filter structure */ 17021259Swollman u_short if_index; /* numeric abbreviation for this if */ 171199975Sjhb short if_index_reserved; /* spare space to grow if_index */ 172155051Sglebius struct ifvlantrunk *if_vlantrunk; /* pointer to 802.1q data */ 173102052Ssobomax int if_flags; /* up/down, broadcast, etc. */ 174162070Sandre int if_capabilities; /* interface features & capabilities */ 175162070Sandre int if_capenable; /* enabled features & capabilities */ 17621259Swollman void *if_linkmib; /* link-type-specific MIB data */ 17721259Swollman size_t if_linkmiblen; /* length of above data */ 17821259Swollman struct if_data if_data; 17921404Swollman struct ifmultihead if_multiaddrs; /* multicast addresses configured */ 18021404Swollman int if_amcount; /* number of all-multicast requests */ 18121259Swollman/* procedure handles */ 18221259Swollman int (*if_output) /* output routine (enqueue) */ 183249925Sglebius (struct ifnet *, struct mbuf *, const struct sockaddr *, 184191148Skmacy struct route *); 185106931Ssam void (*if_input) /* input routine (from h/w driver) */ 186106931Ssam (struct ifnet *, struct mbuf *); 18721259Swollman void (*if_start) /* initiate output routine */ 18892725Salfred (struct ifnet *); 18921259Swollman int (*if_ioctl) /* ioctl routine */ 19092725Salfred (struct ifnet *, u_long, caddr_t); 19121259Swollman void (*if_init) /* Init routine */ 19292725Salfred (void *); 19321404Swollman int (*if_resolvemulti) /* validate/resolve multicast */ 19492725Salfred (struct ifnet *, struct sockaddr **, struct sockaddr *); 195189230Srwatson void (*if_qflush) /* flush any queues */ 196189230Srwatson (struct ifnet *); 197189230Srwatson int (*if_transmit) /* initiate output routine */ 198189230Srwatson (struct ifnet *, struct mbuf *); 199193731Szec void (*if_reassign) /* reassign to vnet routine */ 200193731Szec (struct ifnet *, struct vnet *, char *); 201193731Szec struct vnet *if_home_vnet; /* where this ifnet originates from */ 202152315Sru struct ifaddr *if_addr; /* pointer to link-level address */ 203174388Skmacy void *if_llsoftc; /* link layer softc */ 204148265Srwatson int if_drv_flags; /* driver-managed status flags */ 205130416Smlaier struct ifaltq if_snd; /* output queue (includes altq) */ 206123220Simp const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 207127828Sluigi 208146986Sthompsa void *if_bridge; /* bridge glue */ 209146986Sthompsa 210122524Srwatson struct label *if_label; /* interface MAC label */ 211121161Sume 212127828Sluigi /* these are only used by IPv6 */ 213231229Spluknet void *if_unused[2]; 214121161Sume void *if_afdata[AF_MAX]; 215121470Sume int if_afdata_initialized; 216250300Sandre struct rwlock if_afdata_lock; 217145320Sglebius struct task if_linktask; /* task for link change events */ 218250300Sandre struct rwlock if_addr_lock; /* lock to protect address lists */ 219186119Sqingli 220152209Sthompsa LIST_ENTRY(ifnet) if_clones; /* interfaces of a cloner */ 221159781Smlaier TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */ 222229873Sjhb /* protected by if_addr_lock */ 223159781Smlaier void *if_pf_kif; 224168793Sthompsa void *if_lagg; /* lagg glue */ 225224151Sbz char *if_description; /* interface description */ 226224151Sbz u_int if_fib; /* interface FIB */ 227223739Sbz u_char if_alloctype; /* if_type at time of allocation */ 228189230Srwatson 229274704Shselasky /* 230274704Shselasky * Network adapter TSO limits: 231274704Shselasky * =========================== 232274704Shselasky * 233274704Shselasky * If the "if_hw_tsomax" field is zero the maximum segment 234274704Shselasky * length limit does not apply. If the "if_hw_tsomaxsegcount" 235274704Shselasky * or the "if_hw_tsomaxsegsize" field is zero the TSO segment 236274704Shselasky * count limit does not apply. If all three fields are zero, 237274704Shselasky * there is no TSO limit. 238274704Shselasky * 239289020Shselasky * NOTE: The TSO limits should reflect the values used in the 240289020Shselasky * BUSDMA tag a network adapter is using to load a mbuf chain 241289020Shselasky * for transmission. The TCP/IP network stack will subtract 242289020Shselasky * space for all linklevel and protocol level headers and 243289020Shselasky * ensure that the full mbuf chain passed to the network 244289020Shselasky * adapter fits within the given limits. 245274704Shselasky */ 246274704Shselasky u_int if_hw_tsomax; 247251296Sandre 248189230Srwatson /* 249189230Srwatson * Spare fields are added so that we can modify sensitive data 250189230Srwatson * structures without changing the kernel binary interface, and must 251189230Srwatson * be used with care where binary compatibility is required. 252189230Srwatson */ 253223739Sbz char if_cspare[3]; 254274043Shselasky int if_ispare[2]; 255274043Shselasky 256274043Shselasky /* 257274043Shselasky * TSO fields for segment limits. If a field is zero below, 258274043Shselasky * there is no limit: 259274043Shselasky */ 260274043Shselasky u_int if_hw_tsomaxsegcount; /* TSO maximum segment count */ 261274043Shselasky u_int if_hw_tsomaxsegsize; /* TSO maximum segment size in bytes */ 262318505Srpokala void *if_pspare[7]; /* 1 netmap, 6 TDB */ 263318505Srpokala void *if_hw_addr; /* hardware link-level address */ 26421259Swollman}; 26569152Sjlemon 26692725Salfredtypedef void if_init_f_t(void *); 26721259Swollman 268128376Sluigi/* 269128376Sluigi * XXX These aliases are terribly dangerous because they could apply 270128376Sluigi * to anything. 271128376Sluigi */ 27221259Swollman#define if_mtu if_data.ifi_mtu 27321259Swollman#define if_type if_data.ifi_type 27421259Swollman#define if_physical if_data.ifi_physical 27521259Swollman#define if_addrlen if_data.ifi_addrlen 27621259Swollman#define if_hdrlen if_data.ifi_hdrlen 27721259Swollman#define if_metric if_data.ifi_metric 278128871Sandre#define if_link_state if_data.ifi_link_state 27921259Swollman#define if_baudrate if_data.ifi_baudrate 280241616Semax#define if_baudrate_pf if_data.ifi_baudrate_pf 28158698Sjlemon#define if_hwassist if_data.ifi_hwassist 28221259Swollman#define if_ipackets if_data.ifi_ipackets 28321259Swollman#define if_ierrors if_data.ifi_ierrors 28421259Swollman#define if_opackets if_data.ifi_opackets 28521259Swollman#define if_oerrors if_data.ifi_oerrors 28621259Swollman#define if_collisions if_data.ifi_collisions 28721259Swollman#define if_ibytes if_data.ifi_ibytes 28821259Swollman#define if_obytes if_data.ifi_obytes 28921259Swollman#define if_imcasts if_data.ifi_imcasts 29021259Swollman#define if_omcasts if_data.ifi_omcasts 29121259Swollman#define if_iqdrops if_data.ifi_iqdrops 29221259Swollman#define if_noproto if_data.ifi_noproto 29321259Swollman#define if_lastchange if_data.ifi_lastchange 29421259Swollman 29553541Sshin/* for compatibility with other BSDs */ 29653541Sshin#define if_addrlist if_addrhead 29753541Sshin#define if_list if_link 298160981Sbrooks#define if_name(ifp) ((ifp)->if_xname) 29953541Sshin 30021259Swollman/* 301148640Srwatson * Locks for address lists on the network interface. 302148640Srwatson */ 303229873Sjhb#define IF_ADDR_LOCK_INIT(if) rw_init(&(if)->if_addr_lock, "if_addr_lock") 304229873Sjhb#define IF_ADDR_LOCK_DESTROY(if) rw_destroy(&(if)->if_addr_lock) 305229873Sjhb#define IF_ADDR_WLOCK(if) rw_wlock(&(if)->if_addr_lock) 306229873Sjhb#define IF_ADDR_WUNLOCK(if) rw_wunlock(&(if)->if_addr_lock) 307229873Sjhb#define IF_ADDR_RLOCK(if) rw_rlock(&(if)->if_addr_lock) 308229873Sjhb#define IF_ADDR_RUNLOCK(if) rw_runlock(&(if)->if_addr_lock) 309229873Sjhb#define IF_ADDR_LOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_LOCKED) 310229873Sjhb#define IF_ADDR_WLOCK_ASSERT(if) rw_assert(&(if)->if_addr_lock, RA_WLOCKED) 311148640Srwatson 312148640Srwatson/* 313195020Srwatson * Function variations on locking macros intended to be used by loadable 314195020Srwatson * kernel modules in order to divorce them from the internals of address list 315195020Srwatson * locking. 316195020Srwatson */ 317195020Srwatsonvoid if_addr_rlock(struct ifnet *ifp); /* if_addrhead */ 318195020Srwatsonvoid if_addr_runlock(struct ifnet *ifp); /* if_addrhead */ 319195020Srwatsonvoid if_maddr_rlock(struct ifnet *ifp); /* if_multiaddrs */ 320195020Srwatsonvoid if_maddr_runlock(struct ifnet *ifp); /* if_multiaddrs */ 321195020Srwatson 322195020Srwatson/* 32321259Swollman * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq) 32421259Swollman * are queues of messages stored on ifqueue structures 32521259Swollman * (defined above). Entries are added to and deleted from these structures 326241686Sandre * by these macros. 32721259Swollman */ 32872200Sbmilekic#define IF_LOCK(ifq) mtx_lock(&(ifq)->ifq_mtx) 32972200Sbmilekic#define IF_UNLOCK(ifq) mtx_unlock(&(ifq)->ifq_mtx) 330130416Smlaier#define IF_LOCK_ASSERT(ifq) mtx_assert(&(ifq)->ifq_mtx, MA_OWNED) 33169152Sjlemon#define _IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 33269152Sjlemon#define _IF_DROP(ifq) ((ifq)->ifq_drops++) 33369152Sjlemon#define _IF_QLEN(ifq) ((ifq)->ifq_len) 33421259Swollman 33569152Sjlemon#define _IF_ENQUEUE(ifq, m) do { \ 33669152Sjlemon (m)->m_nextpkt = NULL; \ 33769152Sjlemon if ((ifq)->ifq_tail == NULL) \ 33869152Sjlemon (ifq)->ifq_head = m; \ 33969152Sjlemon else \ 34069152Sjlemon (ifq)->ifq_tail->m_nextpkt = m; \ 34169152Sjlemon (ifq)->ifq_tail = m; \ 34269152Sjlemon (ifq)->ifq_len++; \ 34369152Sjlemon} while (0) 34469152Sjlemon 34569152Sjlemon#define IF_ENQUEUE(ifq, m) do { \ 34669152Sjlemon IF_LOCK(ifq); \ 34769152Sjlemon _IF_ENQUEUE(ifq, m); \ 34869152Sjlemon IF_UNLOCK(ifq); \ 34969152Sjlemon} while (0) 35069152Sjlemon 35169152Sjlemon#define _IF_PREPEND(ifq, m) do { \ 35269152Sjlemon (m)->m_nextpkt = (ifq)->ifq_head; \ 35369152Sjlemon if ((ifq)->ifq_tail == NULL) \ 35469152Sjlemon (ifq)->ifq_tail = (m); \ 35569152Sjlemon (ifq)->ifq_head = (m); \ 35669152Sjlemon (ifq)->ifq_len++; \ 35769152Sjlemon} while (0) 35869152Sjlemon 35969152Sjlemon#define IF_PREPEND(ifq, m) do { \ 36069152Sjlemon IF_LOCK(ifq); \ 36169152Sjlemon _IF_PREPEND(ifq, m); \ 36269152Sjlemon IF_UNLOCK(ifq); \ 36369152Sjlemon} while (0) 36469152Sjlemon 36569152Sjlemon#define _IF_DEQUEUE(ifq, m) do { \ 36669152Sjlemon (m) = (ifq)->ifq_head; \ 36769152Sjlemon if (m) { \ 368136950Sjmg if (((ifq)->ifq_head = (m)->m_nextpkt) == NULL) \ 36969152Sjlemon (ifq)->ifq_tail = NULL; \ 37069152Sjlemon (m)->m_nextpkt = NULL; \ 37169152Sjlemon (ifq)->ifq_len--; \ 37269152Sjlemon } \ 37369152Sjlemon} while (0) 37469152Sjlemon 37569152Sjlemon#define IF_DEQUEUE(ifq, m) do { \ 37669152Sjlemon IF_LOCK(ifq); \ 37769152Sjlemon _IF_DEQUEUE(ifq, m); \ 37869152Sjlemon IF_UNLOCK(ifq); \ 37969152Sjlemon} while (0) 38069152Sjlemon 381226830Sglebius#define _IF_DEQUEUE_ALL(ifq, m) do { \ 382226830Sglebius (m) = (ifq)->ifq_head; \ 383226830Sglebius (ifq)->ifq_head = (ifq)->ifq_tail = NULL; \ 384226830Sglebius (ifq)->ifq_len = 0; \ 385226830Sglebius} while (0) 386226830Sglebius 387226830Sglebius#define IF_DEQUEUE_ALL(ifq, m) do { \ 388226830Sglebius IF_LOCK(ifq); \ 389226830Sglebius _IF_DEQUEUE_ALL(ifq, m); \ 390226830Sglebius IF_UNLOCK(ifq); \ 391226830Sglebius} while (0) 392226830Sglebius 393130416Smlaier#define _IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 394130416Smlaier#define IF_POLL(ifq, m) _IF_POLL(ifq, m) 395130416Smlaier 396130416Smlaier#define _IF_DRAIN(ifq) do { \ 39769152Sjlemon struct mbuf *m; \ 39869152Sjlemon for (;;) { \ 39969152Sjlemon _IF_DEQUEUE(ifq, m); \ 40069152Sjlemon if (m == NULL) \ 40169152Sjlemon break; \ 40269152Sjlemon m_freem(m); \ 40369152Sjlemon } \ 40469152Sjlemon} while (0) 40569152Sjlemon 406130416Smlaier#define IF_DRAIN(ifq) do { \ 407130416Smlaier IF_LOCK(ifq); \ 408130416Smlaier _IF_DRAIN(ifq); \ 409130416Smlaier IF_UNLOCK(ifq); \ 410130416Smlaier} while(0) 411130416Smlaier 41255205Speter#ifdef _KERNEL 413202588Sthompsa/* interface link layer address change event */ 414202588Sthompsatypedef void (*iflladdr_event_handler_t)(void *, struct ifnet *); 415202588SthompsaEVENTHANDLER_DECLARE(iflladdr_event, iflladdr_event_handler_t); 416126264Smlaier/* interface address change event */ 417126264Smlaiertypedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); 418126264SmlaierEVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 419126264Smlaier/* new interface arrival event */ 420126264Smlaiertypedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); 421126264SmlaierEVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 422126264Smlaier/* interface departure event */ 423126264Smlaiertypedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); 424126264SmlaierEVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 425219819Sjeff/* Interface link state change event */ 426219819Sjefftypedef void (*ifnet_link_event_handler_t)(void *, struct ifnet *, int); 427219819SjeffEVENTHANDLER_DECLARE(ifnet_link_event, ifnet_link_event_handler_t); 428314122Sdexuan/* Interface up/down event */ 429314122Sdexuan#define IFNET_EVENT_UP 0 430314122Sdexuan#define IFNET_EVENT_DOWN 1 431314122Sdexuantypedef void (*ifnet_event_fn)(void *, struct ifnet *ifp, int event); 432314122SdexuanEVENTHANDLER_DECLARE(ifnet_event, ifnet_event_fn); 433126264Smlaier 434159781Smlaier/* 435159781Smlaier * interface groups 436159781Smlaier */ 437159781Smlaierstruct ifg_group { 438159781Smlaier char ifg_group[IFNAMSIZ]; 439159781Smlaier u_int ifg_refcnt; 440159781Smlaier void *ifg_pf_kif; 441159781Smlaier TAILQ_HEAD(, ifg_member) ifg_members; 442159781Smlaier TAILQ_ENTRY(ifg_group) ifg_next; 443159781Smlaier}; 444159781Smlaier 445159781Smlaierstruct ifg_member { 446159781Smlaier TAILQ_ENTRY(ifg_member) ifgm_next; 447159781Smlaier struct ifnet *ifgm_ifp; 448159781Smlaier}; 449159781Smlaier 450159781Smlaierstruct ifg_list { 451159781Smlaier struct ifg_group *ifgl_group; 452159781Smlaier TAILQ_ENTRY(ifg_list) ifgl_next; 453159781Smlaier}; 454159781Smlaier 455159781Smlaier/* group attach event */ 456159781Smlaiertypedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 457159781SmlaierEVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 458159781Smlaier/* group detach event */ 459159781Smlaiertypedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 460159781SmlaierEVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 461159781Smlaier/* group change event */ 462159781Smlaiertypedef void (*group_change_event_handler_t)(void *, const char *); 463159781SmlaierEVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 464159781Smlaier 465121470Sume#define IF_AFDATA_LOCK_INIT(ifp) \ 466186199Skmacy rw_init(&(ifp)->if_afdata_lock, "if_afdata") 467121470Sume 468186199Skmacy#define IF_AFDATA_WLOCK(ifp) rw_wlock(&(ifp)->if_afdata_lock) 469186199Skmacy#define IF_AFDATA_RLOCK(ifp) rw_rlock(&(ifp)->if_afdata_lock) 470186199Skmacy#define IF_AFDATA_WUNLOCK(ifp) rw_wunlock(&(ifp)->if_afdata_lock) 471186199Skmacy#define IF_AFDATA_RUNLOCK(ifp) rw_runlock(&(ifp)->if_afdata_lock) 472186199Skmacy#define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) 473186199Skmacy#define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) 474186199Skmacy#define IF_AFDATA_TRYLOCK(ifp) rw_try_wlock(&(ifp)->if_afdata_lock) 475186199Skmacy#define IF_AFDATA_DESTROY(ifp) rw_destroy(&(ifp)->if_afdata_lock) 476186119Sqingli 477186199Skmacy#define IF_AFDATA_LOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_LOCKED) 478238990Sglebius#define IF_AFDATA_RLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_RLOCKED) 479238990Sglebius#define IF_AFDATA_WLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_WLOCKED) 480186199Skmacy#define IF_AFDATA_UNLOCK_ASSERT(ifp) rw_assert(&(ifp)->if_afdata_lock, RA_UNLOCKED) 481186199Skmacy 482137065Srwatsonint if_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, 483137065Srwatson int adjust); 484130416Smlaier#define IF_HANDOFF(ifq, m, ifp) \ 485130416Smlaier if_handoff((struct ifqueue *)ifq, m, ifp, 0) 486130416Smlaier#define IF_HANDOFF_ADJ(ifq, m, ifp, adj) \ 487130416Smlaier if_handoff((struct ifqueue *)ifq, m, ifp, adj) 48821259Swollman 489132712Srwatsonvoid if_start(struct ifnet *); 490132712Srwatson 491130416Smlaier#define IFQ_ENQUEUE(ifq, m, err) \ 492130416Smlaierdo { \ 493130416Smlaier IF_LOCK(ifq); \ 494130416Smlaier if (ALTQ_IS_ENABLED(ifq)) \ 495130416Smlaier ALTQ_ENQUEUE(ifq, m, NULL, err); \ 496130416Smlaier else { \ 497130416Smlaier if (_IF_QFULL(ifq)) { \ 498130416Smlaier m_freem(m); \ 499130416Smlaier (err) = ENOBUFS; \ 500130416Smlaier } else { \ 501130416Smlaier _IF_ENQUEUE(ifq, m); \ 502130416Smlaier (err) = 0; \ 503130416Smlaier } \ 504130416Smlaier } \ 505130416Smlaier if (err) \ 506130416Smlaier (ifq)->ifq_drops++; \ 507130416Smlaier IF_UNLOCK(ifq); \ 508130416Smlaier} while (0) 50921259Swollman 510130416Smlaier#define IFQ_DEQUEUE_NOLOCK(ifq, m) \ 511130416Smlaierdo { \ 512130416Smlaier if (TBR_IS_ENABLED(ifq)) \ 513130508Smlaier (m) = tbr_dequeue_ptr(ifq, ALTDQ_REMOVE); \ 514130416Smlaier else if (ALTQ_IS_ENABLED(ifq)) \ 515130416Smlaier ALTQ_DEQUEUE(ifq, m); \ 516130416Smlaier else \ 517130416Smlaier _IF_DEQUEUE(ifq, m); \ 518130416Smlaier} while (0) 519130416Smlaier 520130416Smlaier#define IFQ_DEQUEUE(ifq, m) \ 521130416Smlaierdo { \ 522130416Smlaier IF_LOCK(ifq); \ 523130416Smlaier IFQ_DEQUEUE_NOLOCK(ifq, m); \ 524130416Smlaier IF_UNLOCK(ifq); \ 525130416Smlaier} while (0) 526130416Smlaier 527130416Smlaier#define IFQ_POLL_NOLOCK(ifq, m) \ 528130416Smlaierdo { \ 529130416Smlaier if (TBR_IS_ENABLED(ifq)) \ 530130508Smlaier (m) = tbr_dequeue_ptr(ifq, ALTDQ_POLL); \ 531130416Smlaier else if (ALTQ_IS_ENABLED(ifq)) \ 532130416Smlaier ALTQ_POLL(ifq, m); \ 533130416Smlaier else \ 534130416Smlaier _IF_POLL(ifq, m); \ 535130416Smlaier} while (0) 536130416Smlaier 537130416Smlaier#define IFQ_POLL(ifq, m) \ 538130416Smlaierdo { \ 539130416Smlaier IF_LOCK(ifq); \ 540130416Smlaier IFQ_POLL_NOLOCK(ifq, m); \ 541130416Smlaier IF_UNLOCK(ifq); \ 542130416Smlaier} while (0) 543130416Smlaier 544130416Smlaier#define IFQ_PURGE_NOLOCK(ifq) \ 545130416Smlaierdo { \ 546130416Smlaier if (ALTQ_IS_ENABLED(ifq)) { \ 547130416Smlaier ALTQ_PURGE(ifq); \ 548130416Smlaier } else \ 549130416Smlaier _IF_DRAIN(ifq); \ 550130416Smlaier} while (0) 551130416Smlaier 552130416Smlaier#define IFQ_PURGE(ifq) \ 553130416Smlaierdo { \ 554130416Smlaier IF_LOCK(ifq); \ 555130416Smlaier IFQ_PURGE_NOLOCK(ifq); \ 556130416Smlaier IF_UNLOCK(ifq); \ 557130416Smlaier} while (0) 558130416Smlaier 559130416Smlaier#define IFQ_SET_READY(ifq) \ 560130416Smlaier do { ((ifq)->altq_flags |= ALTQF_READY); } while (0) 561130416Smlaier 562130416Smlaier#define IFQ_LOCK(ifq) IF_LOCK(ifq) 563130416Smlaier#define IFQ_UNLOCK(ifq) IF_UNLOCK(ifq) 564130416Smlaier#define IFQ_LOCK_ASSERT(ifq) IF_LOCK_ASSERT(ifq) 565130416Smlaier#define IFQ_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 566130416Smlaier#define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 567130416Smlaier#define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 568130416Smlaier#define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 569130416Smlaier#define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 570130416Smlaier 571148886Srwatson/* 572148886Srwatson * The IFF_DRV_OACTIVE test should really occur in the device driver, not in 573148886Srwatson * the handoff logic, as that flag is locked by the device driver. 574148886Srwatson */ 575130416Smlaier#define IFQ_HANDOFF_ADJ(ifp, m, adj, err) \ 576130416Smlaierdo { \ 577130416Smlaier int len; \ 578130416Smlaier short mflags; \ 579130416Smlaier \ 580130416Smlaier len = (m)->m_pkthdr.len; \ 581130416Smlaier mflags = (m)->m_flags; \ 582130416Smlaier IFQ_ENQUEUE(&(ifp)->if_snd, m, err); \ 583130416Smlaier if ((err) == 0) { \ 584130416Smlaier (ifp)->if_obytes += len + (adj); \ 585130416Smlaier if (mflags & M_MCAST) \ 586130416Smlaier (ifp)->if_omcasts++; \ 587148886Srwatson if (((ifp)->if_drv_flags & IFF_DRV_OACTIVE) == 0) \ 588132712Srwatson if_start(ifp); \ 589130416Smlaier } \ 590130416Smlaier} while (0) 591130416Smlaier 592130416Smlaier#define IFQ_HANDOFF(ifp, m, err) \ 593130512Smlaier IFQ_HANDOFF_ADJ(ifp, m, 0, err) 594130416Smlaier 595130416Smlaier#define IFQ_DRV_DEQUEUE(ifq, m) \ 596130416Smlaierdo { \ 597130416Smlaier (m) = (ifq)->ifq_drv_head; \ 598130416Smlaier if (m) { \ 599130416Smlaier if (((ifq)->ifq_drv_head = (m)->m_nextpkt) == NULL) \ 600130416Smlaier (ifq)->ifq_drv_tail = NULL; \ 601130416Smlaier (m)->m_nextpkt = NULL; \ 602130416Smlaier (ifq)->ifq_drv_len--; \ 603130416Smlaier } else { \ 604130416Smlaier IFQ_LOCK(ifq); \ 605130416Smlaier IFQ_DEQUEUE_NOLOCK(ifq, m); \ 606130416Smlaier while ((ifq)->ifq_drv_len < (ifq)->ifq_drv_maxlen) { \ 607130416Smlaier struct mbuf *m0; \ 608130416Smlaier IFQ_DEQUEUE_NOLOCK(ifq, m0); \ 609130416Smlaier if (m0 == NULL) \ 610130416Smlaier break; \ 611130416Smlaier m0->m_nextpkt = NULL; \ 612130416Smlaier if ((ifq)->ifq_drv_tail == NULL) \ 613130416Smlaier (ifq)->ifq_drv_head = m0; \ 614130416Smlaier else \ 615130416Smlaier (ifq)->ifq_drv_tail->m_nextpkt = m0; \ 616130416Smlaier (ifq)->ifq_drv_tail = m0; \ 617130416Smlaier (ifq)->ifq_drv_len++; \ 618130416Smlaier } \ 619130416Smlaier IFQ_UNLOCK(ifq); \ 620130416Smlaier } \ 621130416Smlaier} while (0) 622130416Smlaier 623130416Smlaier#define IFQ_DRV_PREPEND(ifq, m) \ 624130416Smlaierdo { \ 625130416Smlaier (m)->m_nextpkt = (ifq)->ifq_drv_head; \ 626132152Smlaier if ((ifq)->ifq_drv_tail == NULL) \ 627132152Smlaier (ifq)->ifq_drv_tail = (m); \ 628130416Smlaier (ifq)->ifq_drv_head = (m); \ 629130416Smlaier (ifq)->ifq_drv_len++; \ 630130416Smlaier} while (0) 631130416Smlaier 632130416Smlaier#define IFQ_DRV_IS_EMPTY(ifq) \ 633130416Smlaier (((ifq)->ifq_drv_len == 0) && ((ifq)->ifq_len == 0)) 634130416Smlaier 635130416Smlaier#define IFQ_DRV_PURGE(ifq) \ 636130416Smlaierdo { \ 637132152Smlaier struct mbuf *m, *n = (ifq)->ifq_drv_head; \ 638132152Smlaier while((m = n) != NULL) { \ 639132152Smlaier n = m->m_nextpkt; \ 640130416Smlaier m_freem(m); \ 641130416Smlaier } \ 642130416Smlaier (ifq)->ifq_drv_head = (ifq)->ifq_drv_tail = NULL; \ 643130416Smlaier (ifq)->ifq_drv_len = 0; \ 644130416Smlaier IFQ_PURGE(ifq); \ 645130416Smlaier} while (0) 646130416Smlaier 647186207Skmacy#ifdef _KERNEL 648241646Semaxstatic __inline void 649241646Semaxif_initbaudrate(struct ifnet *ifp, uintmax_t baud) 650241646Semax{ 651241646Semax 652241646Semax ifp->if_baudrate_pf = 0; 653241646Semax while (baud > (u_long)(~0UL)) { 654241646Semax baud /= 10; 655241646Semax ifp->if_baudrate_pf++; 656241646Semax } 657241646Semax ifp->if_baudrate = baud; 658241646Semax} 659241646Semax 660186207Skmacystatic __inline int 661186213Skmacydrbr_enqueue(struct ifnet *ifp, struct buf_ring *br, struct mbuf *m) 662186207Skmacy{ 663186207Skmacy int error = 0; 664186207Skmacy 665191033Skmacy#ifdef ALTQ 666191033Skmacy if (ALTQ_IS_ENABLED(&ifp->if_snd)) { 667191033Skmacy IFQ_ENQUEUE(&ifp->if_snd, m, error); 668191033Skmacy return (error); 669191033Skmacy } 670191033Skmacy#endif 671241037Sglebius error = buf_ring_enqueue(br, m); 672241037Sglebius if (error) 673186207Skmacy m_freem(m); 674241037Sglebius 675186207Skmacy return (error); 676186207Skmacy} 677186207Skmacy 678186207Skmacystatic __inline void 679246482Srrsdrbr_putback(struct ifnet *ifp, struct buf_ring *br, struct mbuf *new) 680246482Srrs{ 681246482Srrs /* 682246482Srrs * The top of the list needs to be swapped 683246482Srrs * for this one. 684246482Srrs */ 685246482Srrs#ifdef ALTQ 686246482Srrs if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { 687246482Srrs /* 688246482Srrs * Peek in altq case dequeued it 689246482Srrs * so put it back. 690246482Srrs */ 691246482Srrs IFQ_DRV_PREPEND(&ifp->if_snd, new); 692246482Srrs return; 693246482Srrs } 694246482Srrs#endif 695246482Srrs buf_ring_putback_sc(br, new); 696246482Srrs} 697246482Srrs 698246482Srrsstatic __inline struct mbuf * 699246482Srrsdrbr_peek(struct ifnet *ifp, struct buf_ring *br) 700246482Srrs{ 701246482Srrs#ifdef ALTQ 702246482Srrs struct mbuf *m; 703246482Srrs if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { 704246482Srrs /* 705246482Srrs * Pull it off like a dequeue 706246482Srrs * since drbr_advance() does nothing 707246482Srrs * for altq and drbr_putback() will 708246482Srrs * use the old prepend function. 709246482Srrs */ 710246482Srrs IFQ_DEQUEUE(&ifp->if_snd, m); 711246482Srrs return (m); 712246482Srrs } 713246482Srrs#endif 714301913Ssephe return(buf_ring_peek_clear_sc(br)); 715246482Srrs} 716246482Srrs 717246482Srrsstatic __inline void 718194518Skmacydrbr_flush(struct ifnet *ifp, struct buf_ring *br) 719186207Skmacy{ 720186207Skmacy struct mbuf *m; 721186207Skmacy 722194518Skmacy#ifdef ALTQ 723203834Smlaier if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) 724203834Smlaier IFQ_PURGE(&ifp->if_snd); 725194518Skmacy#endif 726186207Skmacy while ((m = buf_ring_dequeue_sc(br)) != NULL) 727186207Skmacy m_freem(m); 728194518Skmacy} 729186207Skmacy 730194518Skmacystatic __inline void 731194518Skmacydrbr_free(struct buf_ring *br, struct malloc_type *type) 732194518Skmacy{ 733194518Skmacy 734194518Skmacy drbr_flush(NULL, br); 735186207Skmacy buf_ring_free(br, type); 736186207Skmacy} 737191033Skmacy 738191033Skmacystatic __inline struct mbuf * 739191033Skmacydrbr_dequeue(struct ifnet *ifp, struct buf_ring *br) 740191033Skmacy{ 741191033Skmacy#ifdef ALTQ 742191033Skmacy struct mbuf *m; 743191033Skmacy 744246482Srrs if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) { 745203834Smlaier IFQ_DEQUEUE(&ifp->if_snd, m); 746191033Skmacy return (m); 747191033Skmacy } 748186207Skmacy#endif 749191033Skmacy return (buf_ring_dequeue_sc(br)); 750191033Skmacy} 751186207Skmacy 752246482Srrsstatic __inline void 753246482Srrsdrbr_advance(struct ifnet *ifp, struct buf_ring *br) 754246482Srrs{ 755246482Srrs#ifdef ALTQ 756246482Srrs /* Nothing to do here since peek dequeues in altq case */ 757246482Srrs if (ifp != NULL && ALTQ_IS_ENABLED(&ifp->if_snd)) 758246482Srrs return; 759246482Srrs#endif 760246482Srrs return (buf_ring_advance_sc(br)); 761246482Srrs} 762246482Srrs 763246482Srrs 764193848Skmacystatic __inline struct mbuf * 765193848Skmacydrbr_dequeue_cond(struct ifnet *ifp, struct buf_ring *br, 766193848Skmacy int (*func) (struct mbuf *, void *), void *arg) 767193848Skmacy{ 768193848Skmacy struct mbuf *m; 769193848Skmacy#ifdef ALTQ 770203834Smlaier if (ALTQ_IS_ENABLED(&ifp->if_snd)) { 771203834Smlaier IFQ_LOCK(&ifp->if_snd); 772203834Smlaier IFQ_POLL_NOLOCK(&ifp->if_snd, m); 773203834Smlaier if (m != NULL && func(m, arg) == 0) { 774203834Smlaier IFQ_UNLOCK(&ifp->if_snd); 775203834Smlaier return (NULL); 776203834Smlaier } 777205197Smlaier IFQ_DEQUEUE_NOLOCK(&ifp->if_snd, m); 778203834Smlaier IFQ_UNLOCK(&ifp->if_snd); 779193848Skmacy return (m); 780193848Skmacy } 781193848Skmacy#endif 782193848Skmacy m = buf_ring_peek(br); 783193848Skmacy if (m == NULL || func(m, arg) == 0) 784193848Skmacy return (NULL); 785193848Skmacy 786193848Skmacy return (buf_ring_dequeue_sc(br)); 787193848Skmacy} 788193848Skmacy 789191033Skmacystatic __inline int 790191033Skmacydrbr_empty(struct ifnet *ifp, struct buf_ring *br) 791191033Skmacy{ 792191033Skmacy#ifdef ALTQ 793191033Skmacy if (ALTQ_IS_ENABLED(&ifp->if_snd)) 794203834Smlaier return (IFQ_IS_EMPTY(&ifp->if_snd)); 795191033Skmacy#endif 796191033Skmacy return (buf_ring_empty(br)); 797191033Skmacy} 798193848Skmacy 799193848Skmacystatic __inline int 800203834Smlaierdrbr_needs_enqueue(struct ifnet *ifp, struct buf_ring *br) 801203834Smlaier{ 802203834Smlaier#ifdef ALTQ 803203834Smlaier if (ALTQ_IS_ENABLED(&ifp->if_snd)) 804203834Smlaier return (1); 805203834Smlaier#endif 806203834Smlaier return (!buf_ring_empty(br)); 807203834Smlaier} 808203834Smlaier 809203834Smlaierstatic __inline int 810193848Skmacydrbr_inuse(struct ifnet *ifp, struct buf_ring *br) 811193848Skmacy{ 812193848Skmacy#ifdef ALTQ 813193848Skmacy if (ALTQ_IS_ENABLED(&ifp->if_snd)) 814193848Skmacy return (ifp->if_snd.ifq_len); 815191033Skmacy#endif 816193848Skmacy return (buf_ring_count(br)); 817193848Skmacy} 818193848Skmacy#endif 81949459Sbrian/* 82049459Sbrian * 72 was chosen below because it is the size of a TCP/IP 82149459Sbrian * header (40) + the minimum mss (32). 82249459Sbrian */ 82349459Sbrian#define IF_MINMTU 72 82449459Sbrian#define IF_MAXMTU 65535 82549459Sbrian 826237263Snp#define TOEDEV(ifp) ((ifp)->if_llsoftc) 827237263Snp 82855205Speter#endif /* _KERNEL */ 82921259Swollman 83021259Swollman/* 83121259Swollman * The ifaddr structure contains information about one address 83221259Swollman * of an interface. They are maintained by the different address families, 83321259Swollman * are allocated and attached when an address is set, and are linked 83421259Swollman * together so all addresses for an interface can be located. 835128291Sluigi * 836128291Sluigi * NOTE: a 'struct ifaddr' is always at the beginning of a larger 837128291Sluigi * chunk of malloc'ed memory, where we store the three addresses 838128291Sluigi * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 83921259Swollman */ 84021259Swollmanstruct ifaddr { 84121259Swollman struct sockaddr *ifa_addr; /* address of interface */ 84221259Swollman struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 84321259Swollman#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 84421259Swollman struct sockaddr *ifa_netmask; /* used to determine subnet */ 84567334Sjoe struct if_data if_data; /* not all members are meaningful */ 84621259Swollman struct ifnet *ifa_ifp; /* back-pointer to interface */ 847228571Sglebius struct carp_softc *ifa_carp; /* pointer to CARP data */ 84860938Sjake TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 84921259Swollman void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 85092725Salfred (int, struct rtentry *, struct rt_addrinfo *); 85121259Swollman u_short ifa_flags; /* mostly rt_flags for cloning */ 85247254Spb u_int ifa_refcnt; /* references to this structure */ 85321259Swollman int ifa_metric; /* cost of going out this interface */ 85428845Sjulian int (*ifa_claim_addr) /* check if an addr goes to this if */ 85592725Salfred (struct ifaddr *, struct sockaddr *); 856108033Shsu struct mtx ifa_mtx; 85721259Swollman}; 85821259Swollman#define IFA_ROUTE RTF_UP /* route installed */ 859201282Sqingli#define IFA_RTSELF RTF_HOST /* loopback route to self installed */ 86021259Swollman 86153541Sshin/* for compatibility with other BSDs */ 86253541Sshin#define ifa_list ifa_link 86353541Sshin 864194602Srwatson#ifdef _KERNEL 865108033Shsu#define IFA_LOCK(ifa) mtx_lock(&(ifa)->ifa_mtx) 866108033Shsu#define IFA_UNLOCK(ifa) mtx_unlock(&(ifa)->ifa_mtx) 867108033Shsu 868194602Srwatsonvoid ifa_free(struct ifaddr *ifa); 869194602Srwatsonvoid ifa_init(struct ifaddr *ifa); 870194602Srwatsonvoid ifa_ref(struct ifaddr *ifa); 871194602Srwatson#endif 872194602Srwatson 87321404Swollman/* 87421404Swollman * Multicast address structure. This is analogous to the ifaddr 87521404Swollman * structure except that it keeps track of multicast addresses. 87621404Swollman */ 87721404Swollmanstruct ifmultiaddr { 87872084Sphk TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 87921434Swollman struct sockaddr *ifma_addr; /* address this membership is for */ 88021434Swollman struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 88121434Swollman struct ifnet *ifma_ifp; /* back-pointer to interface */ 88221434Swollman u_int ifma_refcount; /* reference count */ 88321434Swollman void *ifma_protospec; /* protocol-specific state, if any */ 884167729Sbms struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 88521404Swollman}; 88621404Swollman 88755205Speter#ifdef _KERNEL 88821259Swollman 889250300Sandreextern struct rwlock ifnet_rwlock; 890196481Srwatsonextern struct sx ifnet_sxlock; 891108172Shsu 892196481Srwatson#define IFNET_LOCK_INIT() do { \ 893196481Srwatson rw_init_flags(&ifnet_rwlock, "ifnet_rw", RW_RECURSE); \ 894196481Srwatson sx_init_flags(&ifnet_sxlock, "ifnet_sx", SX_RECURSE); \ 895196481Srwatson} while(0) 896196481Srwatson 897196481Srwatson#define IFNET_WLOCK() do { \ 898196481Srwatson sx_xlock(&ifnet_sxlock); \ 899196481Srwatson rw_wlock(&ifnet_rwlock); \ 900196481Srwatson} while (0) 901196481Srwatson 902196481Srwatson#define IFNET_WUNLOCK() do { \ 903196481Srwatson rw_wunlock(&ifnet_rwlock); \ 904196481Srwatson sx_xunlock(&ifnet_sxlock); \ 905196481Srwatson} while (0) 906196481Srwatson 907191367Srwatson/* 908196481Srwatson * To assert the ifnet lock, you must know not only whether it's for read or 909196481Srwatson * write, but also whether it was acquired with sleep support or not. 910196481Srwatson */ 911196481Srwatson#define IFNET_RLOCK_ASSERT() sx_assert(&ifnet_sxlock, SA_SLOCKED) 912196481Srwatson#define IFNET_RLOCK_NOSLEEP_ASSERT() rw_assert(&ifnet_rwlock, RA_RLOCKED) 913196481Srwatson#define IFNET_WLOCK_ASSERT() do { \ 914196481Srwatson sx_assert(&ifnet_sxlock, SA_XLOCKED); \ 915196481Srwatson rw_assert(&ifnet_rwlock, RA_WLOCKED); \ 916196481Srwatson} while (0) 917196481Srwatson 918196481Srwatson#define IFNET_RLOCK() sx_slock(&ifnet_sxlock) 919196481Srwatson#define IFNET_RLOCK_NOSLEEP() rw_rlock(&ifnet_rwlock) 920196481Srwatson#define IFNET_RUNLOCK() sx_sunlock(&ifnet_sxlock) 921196481Srwatson#define IFNET_RUNLOCK_NOSLEEP() rw_runlock(&ifnet_rwlock) 922196481Srwatson 923196481Srwatson/* 924191367Srwatson * Look up an ifnet given its index; the _ref variant also acquires a 925191367Srwatson * reference that must be freed using if_rele(). It is almost always a bug 926191367Srwatson * to call ifnet_byindex() instead if ifnet_byindex_ref(). 927191367Srwatson */ 928180042Srwatsonstruct ifnet *ifnet_byindex(u_short idx); 929191816Szecstruct ifnet *ifnet_byindex_locked(u_short idx); 930191367Srwatsonstruct ifnet *ifnet_byindex_ref(u_short idx); 931181892Skmacy 932128315Sluigi/* 933128315Sluigi * Given the index, ifaddr_byindex() returns the one and only 934128315Sluigi * link-level ifaddr for the interface. You are not supposed to use 935128315Sluigi * it to traverse the list of addresses associated to the interface. 936128315Sluigi */ 937180042Srwatsonstruct ifaddr *ifaddr_byindex(u_short idx); 93883130Sjlemon 939195699SrwatsonVNET_DECLARE(struct ifnethead, ifnet); 940195699SrwatsonVNET_DECLARE(struct ifgrouphead, ifg_head); 941195699SrwatsonVNET_DECLARE(int, if_index); 942195699SrwatsonVNET_DECLARE(struct ifnet *, loif); /* first loopback interface */ 943195914SqingliVNET_DECLARE(int, useloopback); 944195699Srwatson 945195727Srwatson#define V_ifnet VNET(ifnet) 946195727Srwatson#define V_ifg_head VNET(ifg_head) 947195727Srwatson#define V_if_index VNET(if_index) 948195727Srwatson#define V_loif VNET(loif) 949195914Sqingli#define V_useloopback VNET(useloopback) 950195699Srwatson 951186048Sbzextern int ifqmaxlen; 95221259Swollman 953159781Smlaierint if_addgroup(struct ifnet *, const char *); 954159781Smlaierint if_delgroup(struct ifnet *, const char *); 95592725Salfredint if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 95692725Salfredint if_allmulti(struct ifnet *, int); 957147256Sbrooksstruct ifnet* if_alloc(u_char); 95892725Salfredvoid if_attach(struct ifnet *); 959191418Srwatsonvoid if_dead(struct ifnet *); 96092725Salfredint if_delmulti(struct ifnet *, struct sockaddr *); 961167729Sbmsvoid if_delmulti_ifma(struct ifmultiaddr *); 96292725Salfredvoid if_detach(struct ifnet *); 963192605Szecvoid if_vmove(struct ifnet *, struct vnet *); 964146620Speadarvoid if_purgeaddrs(struct ifnet *); 965202935Ssyrinxvoid if_delallmulti(struct ifnet *); 96692725Salfredvoid if_down(struct ifnet *); 967167732Sbmsstruct ifmultiaddr * 968167732Sbms if_findmulti(struct ifnet *, struct sockaddr *); 969147256Sbrooksvoid if_free(struct ifnet *); 970121816Sbrooksvoid if_initname(struct ifnet *, const char *, int); 971138542Ssamvoid if_link_state_change(struct ifnet *, int); 972103900Sbrooksint if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 973191161Skmacyvoid if_qflush(struct ifnet *); 974191367Srwatsonvoid if_ref(struct ifnet *); 975191367Srwatsonvoid if_rele(struct ifnet *); 97692725Salfredint if_setlladdr(struct ifnet *, const u_char *, int); 977318430Srpokalaint if_gethwaddr(struct ifnet *, struct ifreq *); 97892725Salfredvoid if_up(struct ifnet *); 97992725Salfredint ifioctl(struct socket *, u_long, caddr_t, struct thread *); 98092725Salfredint ifpromisc(struct ifnet *, int); 98192725Salfredstruct ifnet *ifunit(const char *); 982191423Srwatsonstruct ifnet *ifunit_ref(const char *); 98321259Swollman 984194259Ssamvoid ifq_init(struct ifaltq *, struct ifnet *ifp); 985194259Ssamvoid ifq_delete(struct ifaltq *); 986185162Skmacy 987197227Sqingliint ifa_add_loopback_route(struct ifaddr *, struct sockaddr *); 988197227Sqingliint ifa_del_loopback_route(struct ifaddr *, struct sockaddr *); 989197227Sqingli 99092725Salfredstruct ifaddr *ifa_ifwithaddr(struct sockaddr *); 991194622Srwatsonint ifa_ifwithaddr_check(struct sockaddr *); 992162068Sandrestruct ifaddr *ifa_ifwithbroadaddr(struct sockaddr *); 99392725Salfredstruct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 994267186Sasomersstruct ifaddr *ifa_ifwithdstaddr_fib(struct sockaddr *, int); 995208553Sqinglistruct ifaddr *ifa_ifwithnet(struct sockaddr *, int); 996267186Sasomersstruct ifaddr *ifa_ifwithnet_fib(struct sockaddr *, int, int); 99792725Salfredstruct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *); 998178888Sjulianstruct ifaddr *ifa_ifwithroute_fib(int, struct sockaddr *, struct sockaddr *, u_int); 99992725Salfredstruct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 1000246659Sglebiusint ifa_preferred(struct ifaddr *, struct ifaddr *); 100121259Swollman 100292725Salfredint if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 100321434Swollman 1004147256Sbrookstypedef void *if_com_alloc_t(u_char type, struct ifnet *ifp); 1005147256Sbrookstypedef void if_com_free_t(void *com, u_char type); 1006147256Sbrooksvoid if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 1007147256Sbrooksvoid if_deregister_com_alloc(u_char type); 1008276124Saeuint64_t if_get_counter_default(struct ifnet *, ift_counter); 1009276124Saevoid if_inc_counter(struct ifnet *, ift_counter, int64_t); 1010147256Sbrooks 101184931Sfjoe#define IF_LLADDR(ifp) \ 1012152315Sru LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr)) 101384931Sfjoe 101487902Sluigi#ifdef DEVICE_POLLING 1015150789Sglebiusenum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 101687902Sluigi 1017193096Sattiliotypedef int poll_handler_t(struct ifnet *ifp, enum poll_cmd cmd, int count); 101892725Salfredint ether_poll_register(poll_handler_t *h, struct ifnet *ifp); 101992725Salfredint ether_poll_deregister(struct ifnet *ifp); 102087902Sluigi#endif /* DEVICE_POLLING */ 102187902Sluigi 1022274043Shselasky/* TSO */ 1023274043Shselaskyvoid if_hw_tsomax_common(struct ifnet *, struct ifnet_hw_tsomax *); 1024274043Shselaskyint if_hw_tsomax_update(struct ifnet *, struct ifnet_hw_tsomax *); 1025274043Shselasky 102655205Speter#endif /* _KERNEL */ 102721259Swollman 102821259Swollman#endif /* !_NET_IF_VAR_H_ */ 1029