ifq.h revision 180042
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: head/sys/net/if_var.h 180042 2008-06-26 23:05:28Z rwatson $ 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; 72155051Sglebiusstruct ifvlantrunk; 7321259Swollman#endif 7421259Swollman 7521259Swollman#include <sys/queue.h> /* get TAILQ macros */ 7621259Swollman 7769224Sjlemon#ifdef _KERNEL 7869152Sjlemon#include <sys/mbuf.h> 79126264Smlaier#include <sys/eventhandler.h> 8069224Sjlemon#endif /* _KERNEL */ 8174914Sjhb#include <sys/lock.h> /* XXX */ 8274914Sjhb#include <sys/mutex.h> /* XXX */ 8383130Sjlemon#include <sys/event.h> /* XXX */ 84132712Srwatson#include <sys/_task.h> 8569152Sjlemon 86121816Sbrooks#define IF_DUNIT_NONE -1 87121816Sbrooks 88130416Smlaier#include <altq/if_altq.h> 89130416Smlaier 9060938SjakeTAILQ_HEAD(ifnethead, ifnet); /* we use TAILQs so that the order of */ 9160938SjakeTAILQ_HEAD(ifaddrhead, ifaddr); /* instantiation is preserved in the list */ 9260938SjakeTAILQ_HEAD(ifprefixhead, ifprefix); 9372084SphkTAILQ_HEAD(ifmultihead, ifmultiaddr); 94159781SmlaierTAILQ_HEAD(ifgrouphead, ifg_group); 9521259Swollman 9621259Swollman/* 9721259Swollman * Structure defining a queue for a network interface. 9821259Swollman */ 9921259Swollmanstruct ifqueue { 10021259Swollman struct mbuf *ifq_head; 10121259Swollman struct mbuf *ifq_tail; 10221259Swollman int ifq_len; 10321259Swollman int ifq_maxlen; 10421259Swollman int ifq_drops; 10569152Sjlemon struct mtx ifq_mtx; 10621259Swollman}; 10721259Swollman 10821259Swollman/* 10921259Swollman * Structure defining a network interface. 11021259Swollman * 11121259Swollman * (Would like to call this struct ``if'', but C isn't PL/1.) 11221259Swollman */ 11384380Smjacob 11421259Swollmanstruct ifnet { 11521259Swollman void *if_softc; /* pointer to driver state */ 116147256Sbrooks void *if_l2com; /* pointer to protocol bits */ 11760938Sjake TAILQ_ENTRY(ifnet) if_link; /* all struct ifnets are chained */ 118121816Sbrooks char if_xname[IFNAMSIZ]; /* external name (name + unit) */ 119121816Sbrooks const char *if_dname; /* driver name */ 120121816Sbrooks int if_dunit; /* unit or IF_DUNIT_NONE */ 12121259Swollman struct ifaddrhead if_addrhead; /* linked list of addresses per if */ 122128291Sluigi /* 123128291Sluigi * if_addrhead is the list of all addresses associated to 124128315Sluigi * an interface. 125128315Sluigi * Some code in the kernel assumes that first element 126128315Sluigi * of the list has type AF_LINK, and contains sockaddr_dl 127128315Sluigi * addresses which store the link-level address and the name 128128291Sluigi * of the interface. 129128315Sluigi * However, access to the AF_LINK address through this 130152315Sru * field is deprecated. Use if_addr or ifaddr_byindex() instead. 131128291Sluigi */ 132133741Sjmg struct knlist if_klist; /* events attached to this if */ 13383130Sjlemon int if_pcount; /* number of promiscuous listeners */ 134142901Sglebius struct carp_if *if_carp; /* carp interface structure */ 13521259Swollman struct bpf_if *if_bpf; /* packet filter structure */ 13621259Swollman u_short if_index; /* numeric abbreviation for this if */ 13721259Swollman short if_timer; /* time 'til if_watchdog called */ 138155051Sglebius struct ifvlantrunk *if_vlantrunk; /* pointer to 802.1q data */ 139102052Ssobomax int if_flags; /* up/down, broadcast, etc. */ 140162070Sandre int if_capabilities; /* interface features & capabilities */ 141162070Sandre int if_capenable; /* enabled features & capabilities */ 14221259Swollman void *if_linkmib; /* link-type-specific MIB data */ 14321259Swollman size_t if_linkmiblen; /* length of above data */ 14421259Swollman struct if_data if_data; 14521404Swollman struct ifmultihead if_multiaddrs; /* multicast addresses configured */ 14621404Swollman int if_amcount; /* number of all-multicast requests */ 14721259Swollman/* procedure handles */ 14821259Swollman int (*if_output) /* output routine (enqueue) */ 14992725Salfred (struct ifnet *, struct mbuf *, struct sockaddr *, 15092725Salfred struct rtentry *); 151106931Ssam void (*if_input) /* input routine (from h/w driver) */ 152106931Ssam (struct ifnet *, struct mbuf *); 15321259Swollman void (*if_start) /* initiate output routine */ 15492725Salfred (struct ifnet *); 15521259Swollman int (*if_ioctl) /* ioctl routine */ 15692725Salfred (struct ifnet *, u_long, caddr_t); 15721259Swollman void (*if_watchdog) /* timer routine */ 15892725Salfred (struct ifnet *); 15921259Swollman void (*if_init) /* Init routine */ 16092725Salfred (void *); 16121404Swollman int (*if_resolvemulti) /* validate/resolve multicast */ 16292725Salfred (struct ifnet *, struct sockaddr **, struct sockaddr *); 163152315Sru struct ifaddr *if_addr; /* pointer to link-level address */ 164174388Skmacy void *if_llsoftc; /* link layer softc */ 165148265Srwatson int if_drv_flags; /* driver-managed status flags */ 166137062Srwatson u_int if_spare_flags2; /* spare flags 2 */ 167130416Smlaier struct ifaltq if_snd; /* output queue (includes altq) */ 168123220Simp const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */ 169127828Sluigi 170146986Sthompsa void *if_bridge; /* bridge glue */ 171146986Sthompsa 172127828Sluigi struct lltable *lltables; /* list of L3-L2 resolution tables */ 173127828Sluigi 174122524Srwatson struct label *if_label; /* interface MAC label */ 175121161Sume 176127828Sluigi /* these are only used by IPv6 */ 177127828Sluigi struct ifprefixhead if_prefixhead; /* list of prefixes per if */ 178121161Sume void *if_afdata[AF_MAX]; 179121470Sume int if_afdata_initialized; 180121470Sume struct mtx if_afdata_mtx; 181132712Srwatson struct task if_starttask; /* task for IFF_NEEDSGIANT */ 182145320Sglebius struct task if_linktask; /* task for link change events */ 183148640Srwatson struct mtx if_addr_mtx; /* mutex to protect address lists */ 184152209Sthompsa LIST_ENTRY(ifnet) if_clones; /* interfaces of a cloner */ 185159781Smlaier TAILQ_HEAD(, ifg_list) if_groups; /* linked list of groups per if */ 186159781Smlaier /* protected by if_addr_mtx */ 187159781Smlaier void *if_pf_kif; 188168793Sthompsa void *if_lagg; /* lagg glue */ 189174388Skmacy void *if_pspare[10]; /* multiq/TOE 3; vimage 3; general use 4 */ 190174388Skmacy int if_ispare[2]; /* general use 2 */ 19121259Swollman}; 19269152Sjlemon 19392725Salfredtypedef void if_init_f_t(void *); 19421259Swollman 195128376Sluigi/* 196128376Sluigi * XXX These aliases are terribly dangerous because they could apply 197128376Sluigi * to anything. 198128376Sluigi */ 19921259Swollman#define if_mtu if_data.ifi_mtu 20021259Swollman#define if_type if_data.ifi_type 20121259Swollman#define if_physical if_data.ifi_physical 20221259Swollman#define if_addrlen if_data.ifi_addrlen 20321259Swollman#define if_hdrlen if_data.ifi_hdrlen 20421259Swollman#define if_metric if_data.ifi_metric 205128871Sandre#define if_link_state if_data.ifi_link_state 20621259Swollman#define if_baudrate if_data.ifi_baudrate 20758698Sjlemon#define if_hwassist if_data.ifi_hwassist 20821259Swollman#define if_ipackets if_data.ifi_ipackets 20921259Swollman#define if_ierrors if_data.ifi_ierrors 21021259Swollman#define if_opackets if_data.ifi_opackets 21121259Swollman#define if_oerrors if_data.ifi_oerrors 21221259Swollman#define if_collisions if_data.ifi_collisions 21321259Swollman#define if_ibytes if_data.ifi_ibytes 21421259Swollman#define if_obytes if_data.ifi_obytes 21521259Swollman#define if_imcasts if_data.ifi_imcasts 21621259Swollman#define if_omcasts if_data.ifi_omcasts 21721259Swollman#define if_iqdrops if_data.ifi_iqdrops 21821259Swollman#define if_noproto if_data.ifi_noproto 21921259Swollman#define if_lastchange if_data.ifi_lastchange 220136950Sjmg#define if_rawoutput(if, m, sa) if_output(if, m, sa, (struct rtentry *)NULL) 22121259Swollman 22253541Sshin/* for compatibility with other BSDs */ 22353541Sshin#define if_addrlist if_addrhead 22453541Sshin#define if_list if_link 225160981Sbrooks#define if_name(ifp) ((ifp)->if_xname) 22653541Sshin 22721259Swollman/* 228148640Srwatson * Locks for address lists on the network interface. 229148640Srwatson */ 230148640Srwatson#define IF_ADDR_LOCK_INIT(if) mtx_init(&(if)->if_addr_mtx, \ 231148640Srwatson "if_addr_mtx", NULL, MTX_DEF) 232148640Srwatson#define IF_ADDR_LOCK_DESTROY(if) mtx_destroy(&(if)->if_addr_mtx) 233148640Srwatson#define IF_ADDR_LOCK(if) mtx_lock(&(if)->if_addr_mtx) 234148640Srwatson#define IF_ADDR_UNLOCK(if) mtx_unlock(&(if)->if_addr_mtx) 235148640Srwatson#define IF_ADDR_LOCK_ASSERT(if) mtx_assert(&(if)->if_addr_mtx, MA_OWNED) 236148640Srwatson 237148640Srwatson/* 23821259Swollman * Output queues (ifp->if_snd) and slow device input queues (*ifp->if_slowq) 23921259Swollman * are queues of messages stored on ifqueue structures 24021259Swollman * (defined above). Entries are added to and deleted from these structures 24121259Swollman * by these macros, which should be called with ipl raised to splimp(). 24221259Swollman */ 24372200Sbmilekic#define IF_LOCK(ifq) mtx_lock(&(ifq)->ifq_mtx) 24472200Sbmilekic#define IF_UNLOCK(ifq) mtx_unlock(&(ifq)->ifq_mtx) 245130416Smlaier#define IF_LOCK_ASSERT(ifq) mtx_assert(&(ifq)->ifq_mtx, MA_OWNED) 24669152Sjlemon#define _IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) 24769152Sjlemon#define _IF_DROP(ifq) ((ifq)->ifq_drops++) 24869152Sjlemon#define _IF_QLEN(ifq) ((ifq)->ifq_len) 24921259Swollman 25069152Sjlemon#define _IF_ENQUEUE(ifq, m) do { \ 25169152Sjlemon (m)->m_nextpkt = NULL; \ 25269152Sjlemon if ((ifq)->ifq_tail == NULL) \ 25369152Sjlemon (ifq)->ifq_head = m; \ 25469152Sjlemon else \ 25569152Sjlemon (ifq)->ifq_tail->m_nextpkt = m; \ 25669152Sjlemon (ifq)->ifq_tail = m; \ 25769152Sjlemon (ifq)->ifq_len++; \ 25869152Sjlemon} while (0) 25969152Sjlemon 26069152Sjlemon#define IF_ENQUEUE(ifq, m) do { \ 26169152Sjlemon IF_LOCK(ifq); \ 26269152Sjlemon _IF_ENQUEUE(ifq, m); \ 26369152Sjlemon IF_UNLOCK(ifq); \ 26469152Sjlemon} while (0) 26569152Sjlemon 26669152Sjlemon#define _IF_PREPEND(ifq, m) do { \ 26769152Sjlemon (m)->m_nextpkt = (ifq)->ifq_head; \ 26869152Sjlemon if ((ifq)->ifq_tail == NULL) \ 26969152Sjlemon (ifq)->ifq_tail = (m); \ 27069152Sjlemon (ifq)->ifq_head = (m); \ 27169152Sjlemon (ifq)->ifq_len++; \ 27269152Sjlemon} while (0) 27369152Sjlemon 27469152Sjlemon#define IF_PREPEND(ifq, m) do { \ 27569152Sjlemon IF_LOCK(ifq); \ 27669152Sjlemon _IF_PREPEND(ifq, m); \ 27769152Sjlemon IF_UNLOCK(ifq); \ 27869152Sjlemon} while (0) 27969152Sjlemon 28069152Sjlemon#define _IF_DEQUEUE(ifq, m) do { \ 28169152Sjlemon (m) = (ifq)->ifq_head; \ 28269152Sjlemon if (m) { \ 283136950Sjmg if (((ifq)->ifq_head = (m)->m_nextpkt) == NULL) \ 28469152Sjlemon (ifq)->ifq_tail = NULL; \ 28569152Sjlemon (m)->m_nextpkt = NULL; \ 28669152Sjlemon (ifq)->ifq_len--; \ 28769152Sjlemon } \ 28869152Sjlemon} while (0) 28969152Sjlemon 29069152Sjlemon#define IF_DEQUEUE(ifq, m) do { \ 29169152Sjlemon IF_LOCK(ifq); \ 29269152Sjlemon _IF_DEQUEUE(ifq, m); \ 29369152Sjlemon IF_UNLOCK(ifq); \ 29469152Sjlemon} while (0) 29569152Sjlemon 296130416Smlaier#define _IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 297130416Smlaier#define IF_POLL(ifq, m) _IF_POLL(ifq, m) 298130416Smlaier 299130416Smlaier#define _IF_DRAIN(ifq) do { \ 30069152Sjlemon struct mbuf *m; \ 30169152Sjlemon for (;;) { \ 30269152Sjlemon _IF_DEQUEUE(ifq, m); \ 30369152Sjlemon if (m == NULL) \ 30469152Sjlemon break; \ 30569152Sjlemon m_freem(m); \ 30669152Sjlemon } \ 30769152Sjlemon} while (0) 30869152Sjlemon 309130416Smlaier#define IF_DRAIN(ifq) do { \ 310130416Smlaier IF_LOCK(ifq); \ 311130416Smlaier _IF_DRAIN(ifq); \ 312130416Smlaier IF_UNLOCK(ifq); \ 313130416Smlaier} while(0) 314130416Smlaier 31555205Speter#ifdef _KERNEL 316126264Smlaier/* interface address change event */ 317126264Smlaiertypedef void (*ifaddr_event_handler_t)(void *, struct ifnet *); 318126264SmlaierEVENTHANDLER_DECLARE(ifaddr_event, ifaddr_event_handler_t); 319126264Smlaier/* new interface arrival event */ 320126264Smlaiertypedef void (*ifnet_arrival_event_handler_t)(void *, struct ifnet *); 321126264SmlaierEVENTHANDLER_DECLARE(ifnet_arrival_event, ifnet_arrival_event_handler_t); 322126264Smlaier/* interface departure event */ 323126264Smlaiertypedef void (*ifnet_departure_event_handler_t)(void *, struct ifnet *); 324126264SmlaierEVENTHANDLER_DECLARE(ifnet_departure_event, ifnet_departure_event_handler_t); 325126264Smlaier 326159781Smlaier/* 327159781Smlaier * interface groups 328159781Smlaier */ 329159781Smlaierstruct ifg_group { 330159781Smlaier char ifg_group[IFNAMSIZ]; 331159781Smlaier u_int ifg_refcnt; 332159781Smlaier void *ifg_pf_kif; 333159781Smlaier TAILQ_HEAD(, ifg_member) ifg_members; 334159781Smlaier TAILQ_ENTRY(ifg_group) ifg_next; 335159781Smlaier}; 336159781Smlaier 337159781Smlaierstruct ifg_member { 338159781Smlaier TAILQ_ENTRY(ifg_member) ifgm_next; 339159781Smlaier struct ifnet *ifgm_ifp; 340159781Smlaier}; 341159781Smlaier 342159781Smlaierstruct ifg_list { 343159781Smlaier struct ifg_group *ifgl_group; 344159781Smlaier TAILQ_ENTRY(ifg_list) ifgl_next; 345159781Smlaier}; 346159781Smlaier 347159781Smlaier/* group attach event */ 348159781Smlaiertypedef void (*group_attach_event_handler_t)(void *, struct ifg_group *); 349159781SmlaierEVENTHANDLER_DECLARE(group_attach_event, group_attach_event_handler_t); 350159781Smlaier/* group detach event */ 351159781Smlaiertypedef void (*group_detach_event_handler_t)(void *, struct ifg_group *); 352159781SmlaierEVENTHANDLER_DECLARE(group_detach_event, group_detach_event_handler_t); 353159781Smlaier/* group change event */ 354159781Smlaiertypedef void (*group_change_event_handler_t)(void *, const char *); 355159781SmlaierEVENTHANDLER_DECLARE(group_change_event, group_change_event_handler_t); 356159781Smlaier 357121470Sume#define IF_AFDATA_LOCK_INIT(ifp) \ 358121470Sume mtx_init(&(ifp)->if_afdata_mtx, "if_afdata", NULL, MTX_DEF) 359121470Sume#define IF_AFDATA_LOCK(ifp) mtx_lock(&(ifp)->if_afdata_mtx) 360121470Sume#define IF_AFDATA_TRYLOCK(ifp) mtx_trylock(&(ifp)->if_afdata_mtx) 361121470Sume#define IF_AFDATA_UNLOCK(ifp) mtx_unlock(&(ifp)->if_afdata_mtx) 362121470Sume#define IF_AFDATA_DESTROY(ifp) mtx_destroy(&(ifp)->if_afdata_mtx) 363121470Sume 364136704Srwatson#define IFF_LOCKGIANT(ifp) do { \ 365136704Srwatson if ((ifp)->if_flags & IFF_NEEDSGIANT) \ 366136704Srwatson mtx_lock(&Giant); \ 367136704Srwatson} while (0) 368136704Srwatson 369136704Srwatson#define IFF_UNLOCKGIANT(ifp) do { \ 370136704Srwatson if ((ifp)->if_flags & IFF_NEEDSGIANT) \ 371136704Srwatson mtx_unlock(&Giant); \ 372136704Srwatson} while (0) 373136704Srwatson 374137065Srwatsonint if_handoff(struct ifqueue *ifq, struct mbuf *m, struct ifnet *ifp, 375137065Srwatson int adjust); 376130416Smlaier#define IF_HANDOFF(ifq, m, ifp) \ 377130416Smlaier if_handoff((struct ifqueue *)ifq, m, ifp, 0) 378130416Smlaier#define IF_HANDOFF_ADJ(ifq, m, ifp, adj) \ 379130416Smlaier if_handoff((struct ifqueue *)ifq, m, ifp, adj) 38021259Swollman 381132712Srwatsonvoid if_start(struct ifnet *); 382132712Srwatson 383130416Smlaier#define IFQ_ENQUEUE(ifq, m, err) \ 384130416Smlaierdo { \ 385130416Smlaier IF_LOCK(ifq); \ 386130416Smlaier if (ALTQ_IS_ENABLED(ifq)) \ 387130416Smlaier ALTQ_ENQUEUE(ifq, m, NULL, err); \ 388130416Smlaier else { \ 389130416Smlaier if (_IF_QFULL(ifq)) { \ 390130416Smlaier m_freem(m); \ 391130416Smlaier (err) = ENOBUFS; \ 392130416Smlaier } else { \ 393130416Smlaier _IF_ENQUEUE(ifq, m); \ 394130416Smlaier (err) = 0; \ 395130416Smlaier } \ 396130416Smlaier } \ 397130416Smlaier if (err) \ 398130416Smlaier (ifq)->ifq_drops++; \ 399130416Smlaier IF_UNLOCK(ifq); \ 400130416Smlaier} while (0) 40121259Swollman 402130416Smlaier#define IFQ_DEQUEUE_NOLOCK(ifq, m) \ 403130416Smlaierdo { \ 404130416Smlaier if (TBR_IS_ENABLED(ifq)) \ 405130508Smlaier (m) = tbr_dequeue_ptr(ifq, ALTDQ_REMOVE); \ 406130416Smlaier else if (ALTQ_IS_ENABLED(ifq)) \ 407130416Smlaier ALTQ_DEQUEUE(ifq, m); \ 408130416Smlaier else \ 409130416Smlaier _IF_DEQUEUE(ifq, m); \ 410130416Smlaier} while (0) 411130416Smlaier 412130416Smlaier#define IFQ_DEQUEUE(ifq, m) \ 413130416Smlaierdo { \ 414130416Smlaier IF_LOCK(ifq); \ 415130416Smlaier IFQ_DEQUEUE_NOLOCK(ifq, m); \ 416130416Smlaier IF_UNLOCK(ifq); \ 417130416Smlaier} while (0) 418130416Smlaier 419130416Smlaier#define IFQ_POLL_NOLOCK(ifq, m) \ 420130416Smlaierdo { \ 421130416Smlaier if (TBR_IS_ENABLED(ifq)) \ 422130508Smlaier (m) = tbr_dequeue_ptr(ifq, ALTDQ_POLL); \ 423130416Smlaier else if (ALTQ_IS_ENABLED(ifq)) \ 424130416Smlaier ALTQ_POLL(ifq, m); \ 425130416Smlaier else \ 426130416Smlaier _IF_POLL(ifq, m); \ 427130416Smlaier} while (0) 428130416Smlaier 429130416Smlaier#define IFQ_POLL(ifq, m) \ 430130416Smlaierdo { \ 431130416Smlaier IF_LOCK(ifq); \ 432130416Smlaier IFQ_POLL_NOLOCK(ifq, m); \ 433130416Smlaier IF_UNLOCK(ifq); \ 434130416Smlaier} while (0) 435130416Smlaier 436130416Smlaier#define IFQ_PURGE_NOLOCK(ifq) \ 437130416Smlaierdo { \ 438130416Smlaier if (ALTQ_IS_ENABLED(ifq)) { \ 439130416Smlaier ALTQ_PURGE(ifq); \ 440130416Smlaier } else \ 441130416Smlaier _IF_DRAIN(ifq); \ 442130416Smlaier} while (0) 443130416Smlaier 444130416Smlaier#define IFQ_PURGE(ifq) \ 445130416Smlaierdo { \ 446130416Smlaier IF_LOCK(ifq); \ 447130416Smlaier IFQ_PURGE_NOLOCK(ifq); \ 448130416Smlaier IF_UNLOCK(ifq); \ 449130416Smlaier} while (0) 450130416Smlaier 451130416Smlaier#define IFQ_SET_READY(ifq) \ 452130416Smlaier do { ((ifq)->altq_flags |= ALTQF_READY); } while (0) 453130416Smlaier 454130416Smlaier#define IFQ_LOCK(ifq) IF_LOCK(ifq) 455130416Smlaier#define IFQ_UNLOCK(ifq) IF_UNLOCK(ifq) 456130416Smlaier#define IFQ_LOCK_ASSERT(ifq) IF_LOCK_ASSERT(ifq) 457130416Smlaier#define IFQ_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) 458130416Smlaier#define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) 459130416Smlaier#define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) 460130416Smlaier#define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) 461130416Smlaier#define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) 462130416Smlaier 463148886Srwatson/* 464148886Srwatson * The IFF_DRV_OACTIVE test should really occur in the device driver, not in 465148886Srwatson * the handoff logic, as that flag is locked by the device driver. 466148886Srwatson */ 467130416Smlaier#define IFQ_HANDOFF_ADJ(ifp, m, adj, err) \ 468130416Smlaierdo { \ 469130416Smlaier int len; \ 470130416Smlaier short mflags; \ 471130416Smlaier \ 472130416Smlaier len = (m)->m_pkthdr.len; \ 473130416Smlaier mflags = (m)->m_flags; \ 474130416Smlaier IFQ_ENQUEUE(&(ifp)->if_snd, m, err); \ 475130416Smlaier if ((err) == 0) { \ 476130416Smlaier (ifp)->if_obytes += len + (adj); \ 477130416Smlaier if (mflags & M_MCAST) \ 478130416Smlaier (ifp)->if_omcasts++; \ 479148886Srwatson if (((ifp)->if_drv_flags & IFF_DRV_OACTIVE) == 0) \ 480132712Srwatson if_start(ifp); \ 481130416Smlaier } \ 482130416Smlaier} while (0) 483130416Smlaier 484130416Smlaier#define IFQ_HANDOFF(ifp, m, err) \ 485130512Smlaier IFQ_HANDOFF_ADJ(ifp, m, 0, err) 486130416Smlaier 487130416Smlaier#define IFQ_DRV_DEQUEUE(ifq, m) \ 488130416Smlaierdo { \ 489130416Smlaier (m) = (ifq)->ifq_drv_head; \ 490130416Smlaier if (m) { \ 491130416Smlaier if (((ifq)->ifq_drv_head = (m)->m_nextpkt) == NULL) \ 492130416Smlaier (ifq)->ifq_drv_tail = NULL; \ 493130416Smlaier (m)->m_nextpkt = NULL; \ 494130416Smlaier (ifq)->ifq_drv_len--; \ 495130416Smlaier } else { \ 496130416Smlaier IFQ_LOCK(ifq); \ 497130416Smlaier IFQ_DEQUEUE_NOLOCK(ifq, m); \ 498130416Smlaier while ((ifq)->ifq_drv_len < (ifq)->ifq_drv_maxlen) { \ 499130416Smlaier struct mbuf *m0; \ 500130416Smlaier IFQ_DEQUEUE_NOLOCK(ifq, m0); \ 501130416Smlaier if (m0 == NULL) \ 502130416Smlaier break; \ 503130416Smlaier m0->m_nextpkt = NULL; \ 504130416Smlaier if ((ifq)->ifq_drv_tail == NULL) \ 505130416Smlaier (ifq)->ifq_drv_head = m0; \ 506130416Smlaier else \ 507130416Smlaier (ifq)->ifq_drv_tail->m_nextpkt = m0; \ 508130416Smlaier (ifq)->ifq_drv_tail = m0; \ 509130416Smlaier (ifq)->ifq_drv_len++; \ 510130416Smlaier } \ 511130416Smlaier IFQ_UNLOCK(ifq); \ 512130416Smlaier } \ 513130416Smlaier} while (0) 514130416Smlaier 515130416Smlaier#define IFQ_DRV_PREPEND(ifq, m) \ 516130416Smlaierdo { \ 517130416Smlaier (m)->m_nextpkt = (ifq)->ifq_drv_head; \ 518132152Smlaier if ((ifq)->ifq_drv_tail == NULL) \ 519132152Smlaier (ifq)->ifq_drv_tail = (m); \ 520130416Smlaier (ifq)->ifq_drv_head = (m); \ 521130416Smlaier (ifq)->ifq_drv_len++; \ 522130416Smlaier} while (0) 523130416Smlaier 524130416Smlaier#define IFQ_DRV_IS_EMPTY(ifq) \ 525130416Smlaier (((ifq)->ifq_drv_len == 0) && ((ifq)->ifq_len == 0)) 526130416Smlaier 527130416Smlaier#define IFQ_DRV_PURGE(ifq) \ 528130416Smlaierdo { \ 529132152Smlaier struct mbuf *m, *n = (ifq)->ifq_drv_head; \ 530132152Smlaier while((m = n) != NULL) { \ 531132152Smlaier n = m->m_nextpkt; \ 532130416Smlaier m_freem(m); \ 533130416Smlaier } \ 534130416Smlaier (ifq)->ifq_drv_head = (ifq)->ifq_drv_tail = NULL; \ 535130416Smlaier (ifq)->ifq_drv_len = 0; \ 536130416Smlaier IFQ_PURGE(ifq); \ 537130416Smlaier} while (0) 538130416Smlaier 53949459Sbrian/* 54049459Sbrian * 72 was chosen below because it is the size of a TCP/IP 54149459Sbrian * header (40) + the minimum mss (32). 54249459Sbrian */ 54349459Sbrian#define IF_MINMTU 72 54449459Sbrian#define IF_MAXMTU 65535 54549459Sbrian 54655205Speter#endif /* _KERNEL */ 54721259Swollman 54821259Swollman/* 54921259Swollman * The ifaddr structure contains information about one address 55021259Swollman * of an interface. They are maintained by the different address families, 55121259Swollman * are allocated and attached when an address is set, and are linked 55221259Swollman * together so all addresses for an interface can be located. 553128291Sluigi * 554128291Sluigi * NOTE: a 'struct ifaddr' is always at the beginning of a larger 555128291Sluigi * chunk of malloc'ed memory, where we store the three addresses 556128291Sluigi * (ifa_addr, ifa_dstaddr and ifa_netmask) referenced here. 55721259Swollman */ 55821259Swollmanstruct ifaddr { 55921259Swollman struct sockaddr *ifa_addr; /* address of interface */ 56021259Swollman struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ 56121259Swollman#define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ 56221259Swollman struct sockaddr *ifa_netmask; /* used to determine subnet */ 56367334Sjoe struct if_data if_data; /* not all members are meaningful */ 56421259Swollman struct ifnet *ifa_ifp; /* back-pointer to interface */ 56560938Sjake TAILQ_ENTRY(ifaddr) ifa_link; /* queue macro glue */ 56621259Swollman void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ 56792725Salfred (int, struct rtentry *, struct rt_addrinfo *); 56821259Swollman u_short ifa_flags; /* mostly rt_flags for cloning */ 56947254Spb u_int ifa_refcnt; /* references to this structure */ 57021259Swollman int ifa_metric; /* cost of going out this interface */ 57128845Sjulian int (*ifa_claim_addr) /* check if an addr goes to this if */ 57292725Salfred (struct ifaddr *, struct sockaddr *); 573108033Shsu struct mtx ifa_mtx; 57421259Swollman}; 57521259Swollman#define IFA_ROUTE RTF_UP /* route installed */ 57621259Swollman 57753541Sshin/* for compatibility with other BSDs */ 57853541Sshin#define ifa_list ifa_link 57953541Sshin 580108033Shsu#define IFA_LOCK_INIT(ifa) \ 581108033Shsu mtx_init(&(ifa)->ifa_mtx, "ifaddr", NULL, MTX_DEF) 582108033Shsu#define IFA_LOCK(ifa) mtx_lock(&(ifa)->ifa_mtx) 583108033Shsu#define IFA_UNLOCK(ifa) mtx_unlock(&(ifa)->ifa_mtx) 584108033Shsu#define IFA_DESTROY(ifa) mtx_destroy(&(ifa)->ifa_mtx) 585108033Shsu 58621404Swollman/* 58752904Sshin * The prefix structure contains information about one prefix 58852904Sshin * of an interface. They are maintained by the different address families, 589108470Sschweikh * are allocated and attached when a prefix or an address is set, 59053541Sshin * and are linked together so all prefixes for an interface can be located. 59152904Sshin */ 59252904Sshinstruct ifprefix { 59352904Sshin struct sockaddr *ifpr_prefix; /* prefix of interface */ 59452904Sshin struct ifnet *ifpr_ifp; /* back-pointer to interface */ 59560938Sjake TAILQ_ENTRY(ifprefix) ifpr_list; /* queue macro glue */ 59652904Sshin u_char ifpr_plen; /* prefix length in bits */ 59752904Sshin u_char ifpr_type; /* protocol dependent prefix type */ 59852904Sshin}; 59952904Sshin 60052904Sshin/* 60121404Swollman * Multicast address structure. This is analogous to the ifaddr 60221404Swollman * structure except that it keeps track of multicast addresses. 60321404Swollman */ 60421404Swollmanstruct ifmultiaddr { 60572084Sphk TAILQ_ENTRY(ifmultiaddr) ifma_link; /* queue macro glue */ 60621434Swollman struct sockaddr *ifma_addr; /* address this membership is for */ 60721434Swollman struct sockaddr *ifma_lladdr; /* link-layer translation, if any */ 60821434Swollman struct ifnet *ifma_ifp; /* back-pointer to interface */ 60921434Swollman u_int ifma_refcount; /* reference count */ 61021434Swollman void *ifma_protospec; /* protocol-specific state, if any */ 611167729Sbms struct ifmultiaddr *ifma_llifma; /* pointer to ifma for ifma_lladdr */ 61221404Swollman}; 61321404Swollman 61455205Speter#ifdef _KERNEL 615108036Shsu#define IFAFREE(ifa) \ 616108036Shsu do { \ 617108036Shsu IFA_LOCK(ifa); \ 618108036Shsu KASSERT((ifa)->ifa_refcnt > 0, \ 619108036Shsu ("ifa %p !(ifa_refcnt > 0)", ifa)); \ 620108036Shsu if (--(ifa)->ifa_refcnt == 0) { \ 621108036Shsu IFA_DESTROY(ifa); \ 622108036Shsu free(ifa, M_IFADDR); \ 623108036Shsu } else \ 624108036Shsu IFA_UNLOCK(ifa); \ 62546568Speter } while (0) 62621259Swollman 627108036Shsu#define IFAREF(ifa) \ 628108036Shsu do { \ 629108036Shsu IFA_LOCK(ifa); \ 630108036Shsu ++(ifa)->ifa_refcnt; \ 631108036Shsu IFA_UNLOCK(ifa); \ 632108033Shsu } while (0) 633108033Shsu 634108172Shsuextern struct mtx ifnet_lock; 635108298Shsu#define IFNET_LOCK_INIT() \ 636108298Shsu mtx_init(&ifnet_lock, "ifnet", NULL, MTX_DEF | MTX_RECURSE) 637108172Shsu#define IFNET_WLOCK() mtx_lock(&ifnet_lock) 638108172Shsu#define IFNET_WUNLOCK() mtx_unlock(&ifnet_lock) 639180042Srwatson#define IFNET_WLOCK_ASSERT() mtx_assert(&ifnet_lock, MA_OWNED) 640108172Shsu#define IFNET_RLOCK() IFNET_WLOCK() 641108172Shsu#define IFNET_RUNLOCK() IFNET_WUNLOCK() 642108172Shsu 64383130Sjlemonstruct ifindex_entry { 64487914Sjlemon struct ifnet *ife_ifnet; 645130585Sphk struct cdev *ife_dev; 64683130Sjlemon}; 64783130Sjlemon 648180042Srwatsonstruct ifnet *ifnet_byindex(u_short idx); 649128315Sluigi/* 650128315Sluigi * Given the index, ifaddr_byindex() returns the one and only 651128315Sluigi * link-level ifaddr for the interface. You are not supposed to use 652128315Sluigi * it to traverse the list of addresses associated to the interface. 653128315Sluigi */ 654180042Srwatsonstruct ifaddr *ifaddr_byindex(u_short idx); 655180042Srwatsonstruct cdev *ifdev_byindex(u_short idx); 65683130Sjlemon 65721259Swollmanextern struct ifnethead ifnet; 65821259Swollmanextern int ifqmaxlen; 65971791Speterextern struct ifnet *loif; /* first loopback interface */ 66021259Swollmanextern int if_index; 66121259Swollman 662159781Smlaierint if_addgroup(struct ifnet *, const char *); 663159781Smlaierint if_delgroup(struct ifnet *, const char *); 66492725Salfredint if_addmulti(struct ifnet *, struct sockaddr *, struct ifmultiaddr **); 66592725Salfredint if_allmulti(struct ifnet *, int); 666147256Sbrooksstruct ifnet* if_alloc(u_char); 66792725Salfredvoid if_attach(struct ifnet *); 66892725Salfredint if_delmulti(struct ifnet *, struct sockaddr *); 669167729Sbmsvoid if_delmulti_ifma(struct ifmultiaddr *); 67092725Salfredvoid if_detach(struct ifnet *); 671146620Speadarvoid if_purgeaddrs(struct ifnet *); 672177617Ssamvoid if_purgemaddrs(struct ifnet *); 67392725Salfredvoid if_down(struct ifnet *); 674167732Sbmsstruct ifmultiaddr * 675167732Sbms if_findmulti(struct ifnet *, struct sockaddr *); 676147256Sbrooksvoid if_free(struct ifnet *); 677147256Sbrooksvoid if_free_type(struct ifnet *, u_char); 678121816Sbrooksvoid if_initname(struct ifnet *, const char *, int); 679138542Ssamvoid if_link_state_change(struct ifnet *, int); 680103900Sbrooksint if_printf(struct ifnet *, const char *, ...) __printflike(2, 3); 68192725Salfredint if_setlladdr(struct ifnet *, const u_char *, int); 68292725Salfredvoid if_up(struct ifnet *); 68392725Salfred/*void ifinit(void);*/ /* declared in systm.h for main() */ 68492725Salfredint ifioctl(struct socket *, u_long, caddr_t, struct thread *); 68592725Salfredint ifpromisc(struct ifnet *, int); 68692725Salfredstruct ifnet *ifunit(const char *); 68721259Swollman 68892725Salfredstruct ifaddr *ifa_ifwithaddr(struct sockaddr *); 689162068Sandrestruct ifaddr *ifa_ifwithbroadaddr(struct sockaddr *); 69092725Salfredstruct ifaddr *ifa_ifwithdstaddr(struct sockaddr *); 69192725Salfredstruct ifaddr *ifa_ifwithnet(struct sockaddr *); 69292725Salfredstruct ifaddr *ifa_ifwithroute(int, struct sockaddr *, struct sockaddr *); 693178888Sjulianstruct ifaddr *ifa_ifwithroute_fib(int, struct sockaddr *, struct sockaddr *, u_int); 694178888Sjulian 69592725Salfredstruct ifaddr *ifaof_ifpforaddr(struct sockaddr *, struct ifnet *); 69621259Swollman 69792725Salfredint if_simloop(struct ifnet *ifp, struct mbuf *m, int af, int hlen); 69821434Swollman 699147256Sbrookstypedef void *if_com_alloc_t(u_char type, struct ifnet *ifp); 700147256Sbrookstypedef void if_com_free_t(void *com, u_char type); 701147256Sbrooksvoid if_register_com_alloc(u_char type, if_com_alloc_t *a, if_com_free_t *f); 702147256Sbrooksvoid if_deregister_com_alloc(u_char type); 703147256Sbrooks 70484931Sfjoe#define IF_LLADDR(ifp) \ 705152315Sru LLADDR((struct sockaddr_dl *)((ifp)->if_addr->ifa_addr)) 70684931Sfjoe 70787902Sluigi#ifdef DEVICE_POLLING 708150789Sglebiusenum poll_cmd { POLL_ONLY, POLL_AND_CHECK_STATUS }; 70987902Sluigi 71092725Salfredtypedef void poll_handler_t(struct ifnet *ifp, enum poll_cmd cmd, int count); 71192725Salfredint ether_poll_register(poll_handler_t *h, struct ifnet *ifp); 71292725Salfredint ether_poll_deregister(struct ifnet *ifp); 71387902Sluigi#endif /* DEVICE_POLLING */ 71487902Sluigi 71555205Speter#endif /* _KERNEL */ 71621259Swollman 71721259Swollman#endif /* !_NET_IF_VAR_H_ */ 718