/* $NetBSD: if.h,v 1.308 2025/06/05 06:32:44 ozaki-r Exp $ */ /*- * Copyright (c) 1999, 2000, 2001 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by William Studenmund and Jason R. Thorpe. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1982, 1986, 1989, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)if.h 8.3 (Berkeley) 2/9/95 */ #ifndef _NET_IF_H_ #define _NET_IF_H_ #if !defined(_KERNEL) && !defined(_STANDALONE) #include #endif #include /* * Length of interface external name, including terminating '\0'. * Note: this is the same size as a generic device's external name. */ #define IF_NAMESIZE 16 /* * Length of interface description, including terminating '\0'. */ #define IFDESCRSIZE 64 #if defined(_NETBSD_SOURCE) #include #include #include #include #include #include #ifdef _KERNEL #include #include #include #include #include #endif /* * Always include ALTQ glue here -- we use the ALTQ interface queue * structure even when ALTQ is not configured into the kernel so that * the size of struct ifnet does not changed based on the option. The * ALTQ queue structure is API-compatible with the legacy ifqueue. */ #include /* * Structures defining a network interface, providing a packet * transport mechanism (ala level 0 of the PUP protocols). * * Each interface accepts output datagrams of a specified maximum * length, and provides higher level routines with input datagrams * received from its medium. * * Output occurs when the routine if_output is called, with four parameters: * (*ifp->if_output)(ifp, m, dst, rt) * Here m is the mbuf chain to be sent and dst is the destination address. * The output routine encapsulates the supplied datagram if necessary, * and then transmits it on its medium. * * On input, each interface unwraps the data received by it, and either * places it on the input queue of a internetwork datagram routine * and posts the associated software interrupt, or passes the datagram to a raw * packet input routine. * * Routines exist for locating interfaces by their addresses * or for locating a interface on a certain network, as well as more general * routing and gateway routines maintaining information used to locate * interfaces. These routines live in the files if.c and route.c */ #include #if defined(_KERNEL_OPT) #include "opt_compat_netbsd.h" #include "opt_gateway.h" #endif struct mbuf; struct proc; struct rtentry; struct socket; struct ether_header; struct ifaddr; struct ifnet; struct rt_addrinfo; #define IFNAMSIZ IF_NAMESIZE /* * Structure describing a `cloning' interface. */ struct if_clone { LIST_ENTRY(if_clone) ifc_list; /* on list of cloners */ const char *ifc_name; /* name of device, e.g. `gif' */ size_t ifc_namelen; /* length of name */ int (*ifc_create)(struct if_clone *, int); int (*ifc_destroy)(struct ifnet *); }; #define IF_CLONE_INITIALIZER(name, create, destroy) \ { { NULL, NULL }, name, sizeof(name) - 1, create, destroy } /* * Structure used to query names of interface cloners. */ struct if_clonereq { int ifcr_total; /* total cloners (out) */ int ifcr_count; /* room for this many in user buffer */ char *ifcr_buffer; /* buffer for cloner names */ }; /* * Structure defining statistics and other data kept regarding a network * interface. * * Only used for exporting data from the interface. */ struct if_data { /* generic interface information */ u_char ifi_type; /* ethernet, tokenring, etc. */ u_char ifi_addrlen; /* media address length */ u_char ifi_hdrlen; /* media header length */ int ifi_link_state; /* current link state */ uint64_t ifi_mtu; /* maximum transmission unit */ uint64_t ifi_metric; /* routing metric (external only) */ uint64_t ifi_baudrate; /* linespeed */ /* volatile statistics */ uint64_t ifi_ipackets; /* packets received on interface */ uint64_t ifi_ierrors; /* input errors on interface */ uint64_t ifi_opackets; /* packets sent on interface */ uint64_t ifi_oerrors; /* output errors on interface */ uint64_t ifi_collisions; /* collisions on csma interfaces */ uint64_t ifi_ibytes; /* total number of octets received */ uint64_t ifi_obytes; /* total number of octets sent */ uint64_t ifi_imcasts; /* packets received via multicast */ uint64_t ifi_omcasts; /* packets sent via multicast */ uint64_t ifi_iqdrops; /* dropped on input, this interface */ uint64_t ifi_noproto; /* destined for unsupported protocol */ struct timespec ifi_lastchange;/* last operational state change */ }; /* * Values for if_link_state. */ #define LINK_STATE_UNKNOWN 0 /* link invalid/unknown */ #define LINK_STATE_DOWN 1 /* link is down */ #define LINK_STATE_UP 2 /* link is up */ /* * Status bit descriptions for the various interface types. */ struct if_status_description { unsigned char ifs_type; unsigned char ifs_state; const char *ifs_string; }; #define LINK_STATE_DESC_MATCH(_ifs, _t, _s) \ (((_ifs)->ifs_type == (_t) || (_ifs)->ifs_type == 0) && \ (_ifs)->ifs_state == (_s)) #define LINK_STATE_DESCRIPTIONS { \ { IFT_ETHER, LINK_STATE_DOWN, "no carrier" }, \ { IFT_IEEE80211, LINK_STATE_DOWN, "no network" }, \ { IFT_PPP, LINK_STATE_DOWN, "no carrier" }, \ { IFT_CARP, LINK_STATE_DOWN, "backup" }, \ { IFT_CARP, LINK_STATE_UP, "master" }, \ { 0, LINK_STATE_UP, "active" }, \ { 0, LINK_STATE_UNKNOWN, "unknown" }, \ { 0, LINK_STATE_DOWN, "down" }, \ { 0, 0, NULL } \ } /* * Structure defining a queue for a network interface. */ struct ifqueue { struct mbuf *ifq_head; struct mbuf *ifq_tail; int ifq_len; int ifq_maxlen; uint64_t ifq_drops; kmutex_t *ifq_lock; }; #ifdef _KERNEL #include #include #include #include #endif /* _KERNEL */ /* * Structure defining a queue for a network interface. * * (Would like to call this struct ``if'', but C isn't PL/1.) */ TAILQ_HEAD(ifnet_head, ifnet); /* the actual queue head */ struct bridge_softc; struct bridge_iflist; struct callout; struct krwlock; struct if_percpuq; struct if_deferred_start; struct in6_multi; typedef unsigned short if_index_t; /* * Interface. Field markings and the corresponding locks: * * i: IFNET_LOCK (a.k.a., if_ioctl_lock) * q: ifq_lock (struct ifaltq) * a: if_afdata_lock * 6: in6_multilock (global lock) * :: unlocked, stable * ?: unknown, maybe unsafe * * Lock order: IFNET_LOCK => in6_multilock => if_afdata_lock => ifq_lock * Note that currently if_afdata_lock and ifq_lock aren't held * at the same time, but define the order anyway. * * Lock order of IFNET_LOCK with other locks: * softnet_lock => solock => IFNET_LOCK => ND6_LOCK, in_multilock */ typedef struct ifnet { void *if_softc; /* :: lower-level data for this if */ /* DEPRECATED. Keep it to avoid breaking kvm(3) users */ TAILQ_ENTRY(ifnet) if_list; /* i: all struct ifnets are chained */ TAILQ_HEAD(, ifaddr) if_addrlist; /* i: linked list of addresses per if */ char if_xname[IFNAMSIZ]; /* :: external name (name + unit) */ int if_pcount; /* i: number of promiscuous listeners */ struct bpf_if *if_bpf; /* :: packet filter structure */ if_index_t if_index; /* :: numeric abbreviation for this if */ short if_timer; /* ?: time 'til if_slowtimo called */ unsigned short if_flags; /* i: up/down, broadcast, etc. */ short if_extflags; /* :: if_output MP-safe, etc. */ u_char if_type; /* :: ethernet, tokenring, etc. */ u_char if_addrlen; /* :: media address length */ u_char if_hdrlen; /* :: media header length */ /* XXX audit :? fields here. */ int if_link_state; /* :? current link state */ uint64_t if_mtu; /* :? maximum transmission unit */ uint64_t if_metric; /* :? routing metric (external only) */ uint64_t if_baudrate; /* :? linespeed */ struct timespec if_lastchange; /* :? last operational state change */ #ifdef _KERNEL percpu_t *if_stats; /* :: statistics */ #else void *if_stats; /* opaque to user-space */ #endif /* _KERNEL */ /* * Procedure handles. If you add more of these, don't forget the * corresponding NULL stub in if.c. */ int (*if_output) /* :: output routine (enqueue) */ (struct ifnet *, struct mbuf *, const struct sockaddr *, const struct rtentry *); void (*_if_input) /* :: input routine (from h/w driver) */ (struct ifnet *, struct mbuf *); void (*if_start) /* :: initiate output routine */ (struct ifnet *); int (*if_transmit) /* :: output routine, must be MP-safe */ (struct ifnet *, struct mbuf *); int (*if_ioctl) /* :: ioctl routine */ (struct ifnet *, u_long, void *); int (*if_init) /* :: init routine */ (struct ifnet *); void (*if_stop) /* :: stop routine */ (struct ifnet *, int); void (*if_slowtimo) /* :: timer routine */ (struct ifnet *); #define if_watchdog if_slowtimo void (*if_drain) /* :: routine to release resources */ (struct ifnet *); void (*if_bpf_mtap) /* :: bpf routine */ (struct bpf_if *, struct mbuf *, u_int); struct ifaltq if_snd; /* q: output queue (includes altq) */ struct ifaddr *if_dl; /* i: identity of this interface. */ const struct sockaddr_dl *if_sadl; /* i: pointer to sockaddr_dl of if_dl */ /* * May be NULL. If not NULL, it is the address assigned * to the interface by the manufacturer, so it very likely * to be unique. It MUST NOT be deleted. It is highly * suitable for deriving the EUI64 for the interface. */ struct ifaddr *if_hwdl; /* i: h/w identity */ const uint8_t *if_broadcastaddr; /* :: linklevel broadcast bytestring */ struct bridge_softc *if_bridge; /* i: bridge glue */ struct bridge_iflist *if_bridgeif; /* i: shortcut to interface list entry */ int if_dlt; /* :: data link type () */ pfil_head_t * if_pfil; /* :: filtering point */ uint64_t if_capabilities; /* i: interface capabilities */ uint64_t if_capenable; /* i: capabilities enabled */ union { void * carp_s; /* carp structure (used by !carp ifs) */ struct ifnet *carp_d;/* ptr to carpdev (used by carp ifs) */ } if_carp_ptr; /* ?: */ #define if_carp if_carp_ptr.carp_s #define if_carpdev if_carp_ptr.carp_d /* * These are pre-computed based on an interfaces enabled * capabilities, for speed elsewhere. */ int if_csum_flags_tx; /* i: M_CSUM_* flags for Tx */ int if_csum_flags_rx; /* i: M_CSUM_* flags for Rx */ void *if_afdata[AF_MAX]; /* a: */ struct mowner *if_mowner; /* ?: who owns mbufs for this interface */ void *if_lagg; /* :: lagg or agr structure */ void *if_npf_private;/* ?: associated NPF context */ /* * pf specific data, used only when #if NPF > 0. */ void *if_pf_kif; /* ?: pf interface abstraction */ void *if_pf_groups; /* ?: pf interface groups */ /* * During an ifnet's lifetime, it has only one if_index, but * an if_index is not sufficient to identify an ifnet * because during the lifetime of the system, many ifnets may occupy a * given if_index. Let us tell different ifnets at the same * if_index apart by their if_index_gen, a unique number that each ifnet * is assigned when it if_attach()s. Now, the kernel can use the * pair (if_index, if_index_gen) as a weak reference to an ifnet. */ uint64_t if_index_gen; /* :: generation number for the ifnet * at if_index: if two ifnets' index * and generation number are both the * same, they are the same ifnet. */ struct sysctllog *if_sysctl_log; /* :: */ int (*if_initaddr) /* :: */ (struct ifnet *, struct ifaddr *, bool); int (*if_setflags) /* :: */ (struct ifnet *, const u_short); kmutex_t *if_ioctl_lock; /* :: */ char *if_description; /* i: interface description */ #ifdef _KERNEL /* XXX kvm(3) */ struct if_slowtimo_data *if_slowtimo_data; /* :: */ struct krwlock *if_afdata_lock;/* :: */ struct if_percpuq *if_percpuq; /* :: we should remove it in the future */ struct work if_link_work; /* q: linkage on link state work queue */ uint16_t if_link_queue; /* q: masked link state change queue */ /* q: is link state work scheduled? */ bool if_link_scheduled; struct pslist_entry if_pslist_entry;/* i: */ struct psref_target if_psref; /* :: */ struct pslist_head if_addr_pslist; /* i: */ struct if_deferred_start *if_deferred_start; /* :: */ /* XXX should be protocol independent */ LIST_HEAD(, in6_multi) if_multiaddrs; /* 6: */ khook_list_t *if_linkstate_hooks; /* :: */ #endif } ifnet_t; #include #define if_name(ifp) ((ifp)->if_xname) #define IFF_UP 0x0001 /* interface is up */ #define IFF_BROADCAST 0x0002 /* broadcast address valid */ #define IFF_DEBUG 0x0004 /* turn on debugging */ #define IFF_LOOPBACK 0x0008 /* is a loopback net */ #define IFF_POINTOPOINT 0x0010 /* interface is point-to-point link */ #if 0 /* 0x0020 was IFF_NOTRAILERS */ #else /* * sys/compat/svr4 is removed on 19 Dec 2018. * And then, IFF_NOTRAILERS itself is removed by if.h:r1.268 on 5 Feb 2019. */ #define IFF_UNNUMBERED 0x0020 /* explicit unnumbered */ #endif #define IFF_RUNNING 0x0040 /* resources allocated */ #define IFF_NOARP 0x0080 /* no address resolution protocol */ #define IFF_PROMISC 0x0100 /* receive all packets */ #define IFF_ALLMULTI 0x0200 /* OBSOLETE -- DO NOT USE */ /* * IFF_ALLMULTI obsoleted on 2019-05-15 -- existing non-MP-safe drivers * can use it for themselves under IFNET_LOCK, but they should be * converted to use ETHER_F_ALLMULTI under ETHER_LOCK instead. For * compatibility with existing drivers, if_ethersubr and if_arcsubr * will set IFF_ALLMULTI according to other flags, but you should not * rely on this. */ #define IFF_OACTIVE 0x0400 /* transmission in progress */ #define IFF_SIMPLEX 0x0800 /* can't hear own transmissions */ #define IFF_LINK0 0x1000 /* per link layer defined bit */ #define IFF_LINK1 0x2000 /* per link layer defined bit */ #define IFF_LINK2 0x4000 /* per link layer defined bit */ #define IFF_MULTICAST 0x8000 /* supports multicast */ #define IFEF_MPSAFE __BIT(0) /* handlers can run in parallel (see below) */ /* * The guidelines for converting an interface to IFEF_MPSAFE are as follows * * Enabling IFEF_MPSAFE on an interface suppresses taking KERNEL_LOCK when * calling the following handlers: * - if_start * - Note that if_transmit is always called without KERNEL_LOCK * - if_output * - if_ioctl * - if_init * - if_stop * * This means that an interface with IFEF_MPSAFE must make the above handlers * MP-safe or take KERNEL_LOCK by itself inside handlers that aren't MP-safe * yet. * * There are some additional restrictions to access member variables of struct * ifnet: * - if_flags * - Must be updated with holding IFNET_LOCK * - You cannot use the flag in Tx/Rx paths anymore because there is no * synchronization on the flag except for IFNET_LOCK * - Note that IFNET_LOCK can't be taken in softint because it's known * that it causes a deadlock * - Some synchronization mechanisms such as pserialize_perform are called * with IFNET_LOCK and also require context switches on every CPUs * that mean softints finish so trying to take IFNET_LOCK in softint * might block on IFNET_LOCK and prevent such synchronization mechanisms * from being completed * - Currently the deadlock occurs only if NET_MPSAFE is enabled, however, * we should deal with the restriction because NET_MPSAFE will be enabled * by default in the future * - if_watchdog and if_timer * - The watchdog framework works only for non-IFEF_MPSAFE interfaces * that rely on KERNEL_LOCK * - Interfaces with IFEF_MPSAFE have to provide its own watchdog mechanism * if needed * - Keep if_watchdog NULL when calling if_attach */ #ifdef _KERNEL static __inline bool if_is_mpsafe(struct ifnet *ifp) { return ((ifp->if_extflags & IFEF_MPSAFE) != 0); } static __inline int if_output_lock(struct ifnet *cifp, struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst, const struct rtentry *rt) { if (if_is_mpsafe(cifp)) { return (*cifp->if_output)(ifp, m, dst, rt); } else { int ret; KERNEL_LOCK(1, NULL); ret = (*cifp->if_output)(ifp, m, dst, rt); KERNEL_UNLOCK_ONE(NULL); return ret; } } static __inline void if_start_lock(struct ifnet *ifp) { if (if_is_mpsafe(ifp)) { (*ifp->if_start)(ifp); } else { KERNEL_LOCK(1, NULL); (*ifp->if_start)(ifp); KERNEL_UNLOCK_ONE(NULL); } } #define KERNEL_LOCK_IF_IFP_MPSAFE(ifp) \ do { if (if_is_mpsafe(ifp)) { KERNEL_LOCK(1, NULL); } } while (0) #define KERNEL_UNLOCK_IF_IFP_MPSAFE(ifp) \ do { if (if_is_mpsafe(ifp)) { KERNEL_UNLOCK_ONE(NULL); } } while (0) #define KERNEL_LOCK_UNLESS_IFP_MPSAFE(ifp) \ do { if (!if_is_mpsafe(ifp)) { KERNEL_LOCK(1, NULL); } } while (0) #define KERNEL_UNLOCK_UNLESS_IFP_MPSAFE(ifp) \ do { if (!if_is_mpsafe(ifp)) { KERNEL_UNLOCK_ONE(NULL); } } while (0) #ifdef _KERNEL_OPT #include "opt_net_mpsafe.h" #endif /* XXX explore a better place to define */ #ifdef NET_MPSAFE #define KERNEL_LOCK_UNLESS_NET_MPSAFE() do { } while (0) #define KERNEL_UNLOCK_UNLESS_NET_MPSAFE() do { } while (0) #define SOFTNET_LOCK_UNLESS_NET_MPSAFE() do { } while (0) #define SOFTNET_UNLOCK_UNLESS_NET_MPSAFE() do { } while (0) #define SOFTNET_LOCK_IF_NET_MPSAFE() \ do { mutex_enter(softnet_lock); } while (0) #define SOFTNET_UNLOCK_IF_NET_MPSAFE() \ do { mutex_exit(softnet_lock); } while (0) #else /* NET_MPSAFE */ #define KERNEL_LOCK_UNLESS_NET_MPSAFE() \ do { KERNEL_LOCK(1, NULL); } while (0) #define KERNEL_UNLOCK_UNLESS_NET_MPSAFE() \ do { KERNEL_UNLOCK_ONE(NULL); } while (0) #define SOFTNET_LOCK_UNLESS_NET_MPSAFE() \ do { mutex_enter(softnet_lock); } while (0) #define SOFTNET_UNLOCK_UNLESS_NET_MPSAFE() \ do { mutex_exit(softnet_lock); } while (0) #define SOFTNET_LOCK_IF_NET_MPSAFE() do { } while (0) #define SOFTNET_UNLOCK_IF_NET_MPSAFE() do { } while (0) #endif /* NET_MPSAFE */ #define SOFTNET_KERNEL_LOCK_UNLESS_NET_MPSAFE() \ do { \ SOFTNET_LOCK_UNLESS_NET_MPSAFE(); \ KERNEL_LOCK_UNLESS_NET_MPSAFE(); \ } while (0) #define SOFTNET_KERNEL_UNLOCK_UNLESS_NET_MPSAFE() \ do { \ KERNEL_UNLOCK_UNLESS_NET_MPSAFE(); \ SOFTNET_UNLOCK_UNLESS_NET_MPSAFE(); \ } while (0) #endif /* _KERNEL */ #define IFFBITS \ "\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6UNNUMBERED" \ "\7RUNNING\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX" \ "\15LINK0\16LINK1\17LINK2\20MULTICAST" /* flags set internally only: */ #define IFF_CANTCHANGE \ (IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\ IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC) /* * Some convenience macros used for setting ifi_baudrate. */ #define IF_Kbps(x) ((x) * 1000ULL) /* kilobits/sec. */ #define IF_Mbps(x) (IF_Kbps((x) * 1000ULL)) /* megabits/sec. */ #define IF_Gbps(x) (IF_Mbps((x) * 1000ULL)) /* gigabits/sec. */ /* Capabilities that interfaces can advertise. */ /* 0x01 .. 0x40 were previously used */ #define IFCAP_TSOv4 0x00080 /* can do TCPv4 segmentation offload */ #define IFCAP_CSUM_IPv4_Rx 0x00100 /* can do IPv4 header checksums (Rx) */ #define IFCAP_CSUM_IPv4_Tx 0x00200 /* can do IPv4 header checksums (Tx) */ #define IFCAP_CSUM_TCPv4_Rx 0x00400 /* can do IPv4/TCP checksums (Rx) */ #define IFCAP_CSUM_TCPv4_Tx 0x00800 /* can do IPv4/TCP checksums (Tx) */ #define IFCAP_CSUM_UDPv4_Rx 0x01000 /* can do IPv4/UDP checksums (Rx) */ #define IFCAP_CSUM_UDPv4_Tx 0x02000 /* can do IPv4/UDP checksums (Tx) */ #define IFCAP_CSUM_TCPv6_Rx 0x04000 /* can do IPv6/TCP checksums (Rx) */ #define IFCAP_CSUM_TCPv6_Tx 0x08000 /* can do IPv6/TCP checksums (Tx) */ #define IFCAP_CSUM_UDPv6_Rx 0x10000 /* can do IPv6/UDP checksums (Rx) */ #define IFCAP_CSUM_UDPv6_Tx 0x20000 /* can do IPv6/UDP checksums (Tx) */ #define IFCAP_TSOv6 0x40000 /* can do TCPv6 segmentation offload */ #define IFCAP_LRO 0x80000 /* can do Large Receive Offload */ #define IFCAP_MASK 0xfff80 /* currently valid capabilities */ #define IFCAPBITS \ "\020" \ "\10TSO4" \ "\11IP4CSUM_Rx" \ "\12IP4CSUM_Tx" \ "\13TCP4CSUM_Rx" \ "\14TCP4CSUM_Tx" \ "\15UDP4CSUM_Rx" \ "\16UDP4CSUM_Tx" \ "\17TCP6CSUM_Rx" \ "\20TCP6CSUM_Tx" \ "\21UDP6CSUM_Rx" \ "\22UDP6CSUM_Tx" \ "\23TSO6" \ "\24LRO" \ #define IF_AFDATA_LOCK_INIT(ifp) \ do {(ifp)->if_afdata_lock = rw_obj_alloc();} while (0) #define IF_AFDATA_LOCK_DESTROY(ifp) rw_obj_free((ifp)->if_afdata_lock) #define IF_AFDATA_WLOCK(ifp) rw_enter((ifp)->if_afdata_lock, RW_WRITER) #define IF_AFDATA_RLOCK(ifp) rw_enter((ifp)->if_afdata_lock, RW_READER) #define IF_AFDATA_WUNLOCK(ifp) rw_exit((ifp)->if_afdata_lock) #define IF_AFDATA_RUNLOCK(ifp) rw_exit((ifp)->if_afdata_lock) #define IF_AFDATA_LOCK(ifp) IF_AFDATA_WLOCK(ifp) #define IF_AFDATA_UNLOCK(ifp) IF_AFDATA_WUNLOCK(ifp) #define IF_AFDATA_TRYLOCK(ifp) rw_tryenter((ifp)->if_afdata_lock, RW_WRITER) #define IF_AFDATA_LOCK_ASSERT(ifp) \ KASSERT(rw_lock_held((ifp)->if_afdata_lock)) #define IF_AFDATA_RLOCK_ASSERT(ifp) \ KASSERT(rw_read_held((ifp)->if_afdata_lock)) #define IF_AFDATA_WLOCK_ASSERT(ifp) \ KASSERT(rw_write_held((ifp)->if_afdata_lock)) /* * Output queues (ifp->if_snd) and internetwork datagram level (pup level 1) * input routines have queues of messages stored on ifqueue structures * (defined above). Entries are added to and deleted from these structures * by these macros, which should be called with ipl raised to splnet(). */ #define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen) #define IF_DROP(ifq) ((ifq)->ifq_drops++) #define IF_ENQUEUE(ifq, m) do { \ (m)->m_nextpkt = 0; \ if ((ifq)->ifq_tail == 0) \ (ifq)->ifq_head = m; \ else \ (ifq)->ifq_tail->m_nextpkt = m; \ (ifq)->ifq_tail = m; \ (ifq)->ifq_len++; \ } while (/*CONSTCOND*/0) #define IF_PREPEND(ifq, m) do { \ (m)->m_nextpkt = (ifq)->ifq_head; \ if ((ifq)->ifq_tail == 0) \ (ifq)->ifq_tail = (m); \ (ifq)->ifq_head = (m); \ (ifq)->ifq_len++; \ } while (/*CONSTCOND*/0) #define IF_DEQUEUE(ifq, m) do { \ (m) = (ifq)->ifq_head; \ if (m) { \ if (((ifq)->ifq_head = (m)->m_nextpkt) == 0) \ (ifq)->ifq_tail = 0; \ (m)->m_nextpkt = 0; \ (ifq)->ifq_len--; \ } \ } while (/*CONSTCOND*/0) #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) #define IF_PURGE(ifq) \ do { \ struct mbuf *__m0; \ \ for (;;) { \ IF_DEQUEUE((ifq), __m0); \ if (__m0 == NULL) \ break; \ else \ m_freem(__m0); \ } \ } while (/*CONSTCOND*/ 0) #define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0) #ifndef IFQ_MAXLEN #define IFQ_MAXLEN 256 #endif #define IFNET_SLOWHZ 1 /* granularity is 1 second */ /* * Structure defining statistics and other data kept regarding an address * on a network interface. */ struct ifaddr_data { int64_t ifad_inbytes; int64_t ifad_outbytes; }; /* * The ifaddr structure contains information about one address * of an interface. They are maintained by the different address families, * are allocated and attached when an address is set, and are linked * together so all addresses for an interface can be located. */ struct ifaddr { struct sockaddr *ifa_addr; /* address of interface */ struct sockaddr *ifa_dstaddr; /* other end of p-to-p link */ #define ifa_broadaddr ifa_dstaddr /* broadcast address interface */ struct sockaddr *ifa_netmask; /* used to determine subnet */ struct ifnet *ifa_ifp; /* back-pointer to interface */ TAILQ_ENTRY(ifaddr) ifa_list; /* list of addresses for interface */ struct ifaddr_data ifa_data; /* statistics on the address */ void (*ifa_rtrequest) /* check or clean routes (+ or -)'d */ (int, struct rtentry *, const struct rt_addrinfo *); u_int ifa_flags; /* mostly rt_flags for cloning */ int ifa_refcnt; /* count of references */ int ifa_metric; /* cost of going out this interface */ struct ifaddr *(*ifa_getifa)(struct ifaddr *, const struct sockaddr *); uint32_t *ifa_seqno; int16_t ifa_preference; /* preference level for this address */ #ifdef _KERNEL struct pslist_entry ifa_pslist_entry; struct psref_target ifa_psref; #endif }; #define IFA_ROUTE RTF_UP /* (0x01) route installed */ #define IFA_DESTROYING 0x2 /* * Message format for use in obtaining information about interfaces from * sysctl and the routing socket. We need to force 64-bit alignment if we * aren't using compatibility definitions. */ #if !defined(_KERNEL) || !defined(COMPAT_RTSOCK) #define __align64 __aligned(sizeof(uint64_t)) #else #define __align64 #endif struct if_msghdr { u_short ifm_msglen __align64; /* to skip over non-understood messages */ u_char ifm_version; /* future binary compatibility */ u_char ifm_type; /* message type */ int ifm_addrs; /* like rtm_addrs */ int ifm_flags; /* value of if_flags */ u_short ifm_index; /* index for associated ifp */ struct if_data ifm_data __align64; /* statistics and other data about if */ }; /* * Message format for use in obtaining information about interface addresses * from sysctl and the routing socket. */ struct ifa_msghdr { u_short ifam_msglen __align64; /* to skip over non-understood messages */ u_char ifam_version; /* future binary compatibility */ u_char ifam_type; /* message type */ u_short ifam_index; /* index for associated ifp */ int ifam_flags; /* value of ifa_flags */ int ifam_addrs; /* like rtm_addrs */ pid_t ifam_pid; /* identify sender */ int ifam_addrflags; /* family specific address flags */ int ifam_metric; /* value of ifa_metric */ }; /* * Message format announcing the arrival or departure of a network interface. */ struct if_announcemsghdr { u_short ifan_msglen __align64; /* to skip over non-understood messages */ u_char ifan_version; /* future binary compatibility */ u_char ifan_type; /* message type */ u_short ifan_index; /* index for associated ifp */ char ifan_name[IFNAMSIZ]; /* if name, e.g. "en0" */ u_short ifan_what; /* what type of announcement */ }; #define IFAN_ARRIVAL 0 /* interface arrival */ #define IFAN_DEPARTURE 1 /* interface departure */ #undef __align64 /* * Interface request structure used for socket * ioctl's. All interface ioctl's must have parameter * definitions which begin with ifr_name. The * remainder may be interface specific. */ struct ifreq { char ifr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ union { struct sockaddr ifru_addr; struct sockaddr ifru_dstaddr; struct sockaddr ifru_broadaddr; struct sockaddr_storage ifru_space; short ifru_flags; int ifru_addrflags; int ifru_metric; int ifru_mtu; int ifru_dlt; u_int ifru_value; void * ifru_data; struct { uint32_t b_buflen; void *b_buf; } ifru_b; } ifr_ifru; #define ifr_addr ifr_ifru.ifru_addr /* address */ #define ifr_dstaddr ifr_ifru.ifru_dstaddr /* other end of p-to-p link */ #define ifr_broadaddr ifr_ifru.ifru_broadaddr /* broadcast address */ #define ifr_space ifr_ifru.ifru_space /* sockaddr_storage */ #define ifr_flags ifr_ifru.ifru_flags /* flags */ #define ifr_addrflags ifr_ifru.ifru_addrflags /* addr flags */ #define ifr_metric ifr_ifru.ifru_metric /* metric */ #define ifr_mtu ifr_ifru.ifru_mtu /* mtu */ #define ifr_dlt ifr_ifru.ifru_dlt /* data link type (DLT_*) */ #define ifr_value ifr_ifru.ifru_value /* generic value */ #define ifr_media ifr_ifru.ifru_metric /* media options (overload) */ #define ifr_data ifr_ifru.ifru_data /* for use by interface * XXX deprecated */ #define ifr_buf ifr_ifru.ifru_b.b_buf /* new interface ioctls */ #define ifr_buflen ifr_ifru.ifru_b.b_buflen #define ifr_index ifr_ifru.ifru_value /* interface index, BSD */ #define ifr_ifindex ifr_index /* interface index, linux */ }; #ifdef _KERNEL #define ifreq_setdstaddr ifreq_setaddr #define ifreq_setbroadaddr ifreq_setaddr #define ifreq_getdstaddr ifreq_getaddr #define ifreq_getbroadaddr ifreq_getaddr static __inline const struct sockaddr * /*ARGSUSED*/ ifreq_getaddr(u_long cmd, const struct ifreq *ifr) { return &ifr->ifr_addr; } #endif /* _KERNEL */ struct ifcapreq { char ifcr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ uint64_t ifcr_capabilities; /* supported capabiliites */ uint64_t ifcr_capenable; /* capabilities enabled */ }; struct ifaliasreq { char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */ struct sockaddr ifra_addr; struct sockaddr ifra_dstaddr; #define ifra_broadaddr ifra_dstaddr struct sockaddr ifra_mask; }; struct ifdatareq { char ifdr_name[IFNAMSIZ]; /* if name, e.g. "en0" */ struct if_data ifdr_data; }; struct ifmediareq { char ifm_name[IFNAMSIZ]; /* if name, e.g. "en0" */ int ifm_current; /* IFMWD: current media options */ int ifm_mask; /* IFMWD: don't care mask */ int ifm_status; /* media status */ int ifm_active; /* IFMWD: active options */ int ifm_count; /* # entries in ifm_ulist array */ int *ifm_ulist; /* array of ifmedia word */ }; struct ifdrv { char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */ unsigned long ifd_cmd; size_t ifd_len; void *ifd_data; }; #define IFLINKSTR_QUERYLEN 0x01 #define IFLINKSTR_UNSET 0x02 /* * Structure used in SIOCGIFCONF request. * Used to retrieve interface configuration * for machine (useful for programs which * must know all networks accessible). */ struct ifconf { int ifc_len; /* size of associated buffer */ union { void * ifcu_buf; struct ifreq *ifcu_req; } ifc_ifcu; #define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */ #define ifc_req ifc_ifcu.ifcu_req /* array of structures returned */ }; /* * Structure for SIOC[AGD]LIFADDR */ struct if_laddrreq { char iflr_name[IFNAMSIZ]; unsigned int flags; #define IFLR_PREFIX 0x8000 /* in: prefix given out: kernel fills id */ #define IFLR_ACTIVE 0x4000 /* in/out: link-layer address activation */ #define IFLR_FACTORY 0x2000 /* in/out: factory link-layer address */ unsigned int prefixlen; /* in/out */ struct sockaddr_storage addr; /* in/out */ struct sockaddr_storage dstaddr; /* out */ }; /* * Structure for SIOC[SG]IFADDRPREF */ struct if_addrprefreq { char ifap_name[IFNAMSIZ]; int16_t ifap_preference; /* in/out */ struct sockaddr_storage ifap_addr; /* in/out */ }; #include #endif /* _NETBSD_SOURCE */ #ifdef _KERNEL #ifdef ALTQ #define IFQ_ENQUEUE(ifq, m, err) \ do { \ mutex_enter((ifq)->ifq_lock); \ if (ALTQ_IS_ENABLED(ifq)) \ ALTQ_ENQUEUE((ifq), (m), (err)); \ else { \ if (IF_QFULL(ifq)) { \ m_freem(m); \ (err) = ENOBUFS; \ } else { \ IF_ENQUEUE((ifq), (m)); \ (err) = 0; \ } \ } \ if ((err)) \ (ifq)->ifq_drops++; \ mutex_exit((ifq)->ifq_lock); \ } while (/*CONSTCOND*/ 0) #define IFQ_DEQUEUE(ifq, m) \ do { \ mutex_enter((ifq)->ifq_lock); \ if (TBR_IS_ENABLED(ifq)) \ (m) = tbr_dequeue((ifq), ALTDQ_REMOVE); \ else if (ALTQ_IS_ENABLED(ifq)) \ ALTQ_DEQUEUE((ifq), (m)); \ else \ IF_DEQUEUE((ifq), (m)); \ mutex_exit((ifq)->ifq_lock); \ } while (/*CONSTCOND*/ 0) #define IFQ_POLL(ifq, m) \ do { \ mutex_enter((ifq)->ifq_lock); \ if (TBR_IS_ENABLED(ifq)) \ (m) = tbr_dequeue((ifq), ALTDQ_POLL); \ else if (ALTQ_IS_ENABLED(ifq)) \ ALTQ_POLL((ifq), (m)); \ else \ IF_POLL((ifq), (m)); \ mutex_exit((ifq)->ifq_lock); \ } while (/*CONSTCOND*/ 0) #define IFQ_PURGE(ifq) \ do { \ mutex_enter((ifq)->ifq_lock); \ if (ALTQ_IS_ENABLED(ifq)) \ ALTQ_PURGE(ifq); \ else \ IF_PURGE(ifq); \ mutex_exit((ifq)->ifq_lock); \ } while (/*CONSTCOND*/ 0) #define IFQ_SET_READY(ifq) \ do { \ (ifq)->altq_flags |= ALTQF_READY; \ } while (/*CONSTCOND*/ 0) #define IFQ_CLASSIFY(ifq, m, af) \ do { \ KASSERT(((m)->m_flags & M_PKTHDR) != 0); \ mutex_enter((ifq)->ifq_lock); \ if (ALTQ_IS_ENABLED(ifq)) { \ if (ALTQ_NEEDS_CLASSIFY(ifq)) \ (m)->m_pkthdr.pattr_class = (*(ifq)->altq_classify) \ ((ifq)->altq_clfier, (m), (af)); \ (m)->m_pkthdr.pattr_af = (af); \ (m)->m_pkthdr.pattr_hdr = mtod((m), void *); \ } \ mutex_exit((ifq)->ifq_lock); \ } while (/*CONSTCOND*/ 0) #else /* ! ALTQ */ #define IFQ_ENQUEUE(ifq, m, err) \ do { \ mutex_enter((ifq)->ifq_lock); \ if (IF_QFULL(ifq)) { \ m_freem(m); \ (err) = ENOBUFS; \ } else { \ IF_ENQUEUE((ifq), (m)); \ (err) = 0; \ } \ if (err) \ (ifq)->ifq_drops++; \ mutex_exit((ifq)->ifq_lock); \ } while (/*CONSTCOND*/ 0) #define IFQ_DEQUEUE(ifq, m) \ do { \ mutex_enter((ifq)->ifq_lock); \ IF_DEQUEUE((ifq), (m)); \ mutex_exit((ifq)->ifq_lock); \ } while (/*CONSTCOND*/ 0) #define IFQ_POLL(ifq, m) \ do { \ mutex_enter((ifq)->ifq_lock); \ IF_POLL((ifq), (m)); \ mutex_exit((ifq)->ifq_lock); \ } while (/*CONSTCOND*/ 0) #define IFQ_PURGE(ifq) \ do { \ mutex_enter((ifq)->ifq_lock); \ IF_PURGE(ifq); \ mutex_exit((ifq)->ifq_lock); \ } while (/*CONSTCOND*/ 0) #define IFQ_SET_READY(ifq) /* nothing */ #define IFQ_CLASSIFY(ifq, m, af) /* nothing */ #endif /* ALTQ */ #define IFQ_LOCK_INIT(ifq) (ifq)->ifq_lock = \ mutex_obj_alloc(MUTEX_DEFAULT, IPL_NET) #define IFQ_LOCK_DESTROY(ifq) mutex_obj_free((ifq)->ifq_lock) #define IFQ_LOCK(ifq) mutex_enter((ifq)->ifq_lock) #define IFQ_UNLOCK(ifq) mutex_exit((ifq)->ifq_lock) #define IFQ_IS_EMPTY(ifq) IF_IS_EMPTY(ifq) #define IFQ_INC_LEN(ifq) ((ifq)->ifq_len++) #define IFQ_DEC_LEN(ifq) (--(ifq)->ifq_len) #define IFQ_INC_DROPS(ifq) ((ifq)->ifq_drops++) #define IFQ_SET_MAXLEN(ifq, len) ((ifq)->ifq_maxlen = (len)) #include MALLOC_DECLARE(M_IFADDR); MALLOC_DECLARE(M_IFMADDR); int ifreq_setaddr(u_long, struct ifreq *, const struct sockaddr *); struct ifnet *if_alloc(u_char); void if_free(struct ifnet *); void if_initname(struct ifnet *, const char *, int); struct ifaddr *if_dl_create(const struct ifnet *, const struct sockaddr_dl **); void if_activate_sadl(struct ifnet *, struct ifaddr *, const struct sockaddr_dl *); void if_set_sadl(struct ifnet *, const void *, u_char, bool); void if_alloc_sadl(struct ifnet *); void if_free_sadl(struct ifnet *, int); void if_initialize(struct ifnet *); void if_register(struct ifnet *); void if_attach(struct ifnet *); /* Deprecated. Use if_initialize and if_register */ void if_attachdomain(void); void if_deactivate(struct ifnet *); bool if_is_deactivated(const struct ifnet *); void if_export_if_data(struct ifnet *, struct if_data *, bool); void if_purgeaddrs(struct ifnet *, int, void (*)(struct ifaddr *)); void if_detach(struct ifnet *); void if_down(struct ifnet *); void if_down_locked(struct ifnet *); void if_link_state_change(struct ifnet *, int); void if_domain_link_state_change(struct ifnet *, int); void if_up(struct ifnet *); void ifinit(void); void ifinit1(void); void ifinit_post(void); int ifaddrpref_ioctl(struct socket *, u_long, void *, struct ifnet *); extern int (*ifioctl)(struct socket *, u_long, void *, struct lwp *); int ifioctl_common(struct ifnet *, u_long, void *); int ifpromisc(struct ifnet *, int); int ifpromisc_locked(struct ifnet *, int); int if_addr_init(ifnet_t *, struct ifaddr *, bool); int if_do_dad(struct ifnet *); int if_mcast_op(ifnet_t *, const unsigned long, const struct sockaddr *); int if_flags_set(struct ifnet *, const u_short); int if_clone_list(int, char *, int *); int if_ioctl(struct ifnet *, u_long, void *); int if_init(struct ifnet *); void if_stop(struct ifnet *, int); struct ifnet *ifunit(const char *); struct ifnet *if_get(const char *, struct psref *); ifnet_t *if_byindex(u_int); ifnet_t *_if_byindex(u_int); ifnet_t *if_get_byindex(u_int, struct psref *); ifnet_t *if_get_bylla(const void *, unsigned char, struct psref *); void if_put(const struct ifnet *, struct psref *); void if_acquire(struct ifnet *, struct psref *); #define if_release if_put int if_tunnel_check_nesting(struct ifnet *, struct mbuf *, int); percpu_t *if_tunnel_alloc_ro_percpu(void); void if_tunnel_free_ro_percpu(percpu_t *); void if_tunnel_ro_percpu_rtcache_free(percpu_t *); struct tunnel_ro { struct route *tr_ro; kmutex_t *tr_lock; }; static inline void if_tunnel_get_ro(percpu_t *ro_percpu, struct route **ro, kmutex_t **lock) { struct tunnel_ro *tro; tro = percpu_getref(ro_percpu); *ro = tro->tr_ro; *lock = tro->tr_lock; mutex_enter(*lock); } static inline void if_tunnel_put_ro(percpu_t *ro_percpu, kmutex_t *lock) { mutex_exit(lock); percpu_putref(ro_percpu); } static __inline if_index_t if_get_index(const struct ifnet *ifp) { return ifp != NULL ? ifp->if_index : 0; } bool if_held(struct ifnet *); void if_input(struct ifnet *, struct mbuf *); struct if_percpuq * if_percpuq_create(struct ifnet *); void if_percpuq_destroy(struct if_percpuq *); void if_percpuq_enqueue(struct if_percpuq *, struct mbuf *); void if_deferred_start_init(struct ifnet *, void (*)(struct ifnet *)); void if_schedule_deferred_start(struct ifnet *); void ifa_insert(struct ifnet *, struct ifaddr *); void ifa_remove(struct ifnet *, struct ifaddr *); void ifa_psref_init(struct ifaddr *); void ifa_acquire(struct ifaddr *, struct psref *); void ifa_release(struct ifaddr *, struct psref *); bool ifa_held(struct ifaddr *); bool ifa_is_destroying(struct ifaddr *); void ifaref(struct ifaddr *); void ifafree(struct ifaddr *); struct ifaddr *ifa_ifwithaddr(const struct sockaddr *); struct ifaddr *ifa_ifwithaddr_psref(const struct sockaddr *, struct psref *); struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *); struct ifaddr *ifa_ifwithdstaddr_psref(const struct sockaddr *, struct psref *); struct ifaddr *ifa_ifwithnet(const struct sockaddr *); struct ifaddr *ifa_ifwithnet_psref(const struct sockaddr *, struct psref *); struct ifaddr *ifa_ifwithladdr(const struct sockaddr *); struct ifaddr *ifa_ifwithladdr_psref(const struct sockaddr *, struct psref *); struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *); struct ifaddr *ifaof_ifpforaddr_psref(const struct sockaddr *, struct ifnet *, struct psref *); void link_rtrequest(int, struct rtentry *, const struct rt_addrinfo *); void p2p_rtrequest(int, struct rtentry *, const struct rt_addrinfo *); struct ifaddr *if_first_addr(const struct ifnet *ifp, const int af); struct ifaddr *if_first_addr_psref(const struct ifnet *ifp, const int af, struct psref *psref); void if_clone_attach(struct if_clone *); void if_clone_detach(struct if_clone *); int if_transmit_lock(struct ifnet *, struct mbuf *); int ifq_enqueue(struct ifnet *, struct mbuf *); int ifq_enqueue2(struct ifnet *, struct ifqueue *, struct mbuf *); int loioctl(struct ifnet *, u_long, void *); void loopattach(int); void loopinit(void); int looutput(struct ifnet *, struct mbuf *, const struct sockaddr *, const struct rtentry *); void * if_linkstate_change_establish(struct ifnet *, void (*)(void *), void *); void if_linkstate_change_disestablish(struct ifnet *, void *, kmutex_t *); /* * These are exported because they're an easy way to tell if * an interface is going away without having to burn a flag. */ int if_nulloutput(struct ifnet *, struct mbuf *, const struct sockaddr *, const struct rtentry *); void if_nullinput(struct ifnet *, struct mbuf *); void if_nullstart(struct ifnet *); int if_nulltransmit(struct ifnet *, struct mbuf *); int if_nullioctl(struct ifnet *, u_long, void *); int if_nullinit(struct ifnet *); void if_nullstop(struct ifnet *, int); void if_nullslowtimo(struct ifnet *); #define if_nullwatchdog if_nullslowtimo void if_nulldrain(struct ifnet *); #else struct if_nameindex { unsigned int if_index; /* 1, 2, ... */ char *if_name; /* null terminated name: "le0", ... */ }; #include __BEGIN_DECLS unsigned int if_nametoindex(const char *); char * if_indextoname(unsigned int, char *); struct if_nameindex * if_nameindex(void); void if_freenameindex(struct if_nameindex *); __END_DECLS #endif /* _KERNEL */ /* XXX really ALTQ? */ #ifdef _KERNEL #define IFADDR_FIRST(__ifp) TAILQ_FIRST(&(__ifp)->if_addrlist) #define IFADDR_NEXT(__ifa) TAILQ_NEXT((__ifa), ifa_list) #define IFADDR_FOREACH(__ifa, __ifp) TAILQ_FOREACH(__ifa, \ &(__ifp)->if_addrlist, ifa_list) #define IFADDR_FOREACH_SAFE(__ifa, __ifp, __nifa) \ TAILQ_FOREACH_SAFE(__ifa, \ &(__ifp)->if_addrlist, ifa_list, __nifa) #define IFADDR_EMPTY(__ifp) TAILQ_EMPTY(&(__ifp)->if_addrlist) #define IFADDR_ENTRY_INIT(__ifa) \ PSLIST_ENTRY_INIT((__ifa), ifa_pslist_entry) #define IFADDR_ENTRY_DESTROY(__ifa) \ PSLIST_ENTRY_DESTROY((__ifa), ifa_pslist_entry) #define IFADDR_READER_EMPTY(__ifp) \ (PSLIST_READER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \ ifa_pslist_entry) == NULL) #define IFADDR_READER_FIRST(__ifp) \ PSLIST_READER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \ ifa_pslist_entry) #define IFADDR_READER_NEXT(__ifa) \ PSLIST_READER_NEXT((__ifa), struct ifaddr, ifa_pslist_entry) #define IFADDR_READER_FOREACH(__ifa, __ifp) \ PSLIST_READER_FOREACH((__ifa), &(__ifp)->if_addr_pslist, struct ifaddr,\ ifa_pslist_entry) #define IFADDR_WRITER_INSERT_HEAD(__ifp, __ifa) \ PSLIST_WRITER_INSERT_HEAD(&(__ifp)->if_addr_pslist, (__ifa), \ ifa_pslist_entry) #define IFADDR_WRITER_REMOVE(__ifa) \ PSLIST_WRITER_REMOVE((__ifa), ifa_pslist_entry) #define IFADDR_WRITER_FOREACH(__ifa, __ifp) \ PSLIST_WRITER_FOREACH((__ifa), &(__ifp)->if_addr_pslist, struct ifaddr,\ ifa_pslist_entry) #define IFADDR_WRITER_NEXT(__ifp) \ PSLIST_WRITER_NEXT((__ifp), struct ifaddr, ifa_pslist_entry) #define IFADDR_WRITER_INSERT_AFTER(__ifp, __new) \ PSLIST_WRITER_INSERT_AFTER((__ifp), (__new), ifa_pslist_entry) #define IFADDR_WRITER_EMPTY(__ifp) \ (PSLIST_WRITER_FIRST(&(__ifp)->if_addr_pslist, struct ifaddr, \ ifa_pslist_entry) == NULL) #define IFADDR_WRITER_INSERT_TAIL(__ifp, __new) \ do { \ if (IFADDR_WRITER_EMPTY(__ifp)) { \ IFADDR_WRITER_INSERT_HEAD((__ifp), (__new)); \ } else { \ struct ifaddr *__ifa; \ IFADDR_WRITER_FOREACH(__ifa, (__ifp)) { \ if (IFADDR_WRITER_NEXT(__ifa) == NULL) {\ IFADDR_WRITER_INSERT_AFTER(__ifa,\ (__new)); \ break; \ } \ } \ } \ } while (0) #define IFNET_GLOBAL_LOCK() mutex_enter(&ifnet_mtx) #define IFNET_GLOBAL_UNLOCK() mutex_exit(&ifnet_mtx) #define IFNET_GLOBAL_LOCKED() mutex_owned(&ifnet_mtx) #define IFNET_READER_EMPTY() \ (PSLIST_READER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) == NULL) #define IFNET_READER_FIRST() \ PSLIST_READER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) #define IFNET_READER_NEXT(__ifp) \ PSLIST_READER_NEXT((__ifp), struct ifnet, if_pslist_entry) #define IFNET_READER_FOREACH(__ifp) \ PSLIST_READER_FOREACH((__ifp), &ifnet_pslist, struct ifnet, \ if_pslist_entry) #define IFNET_WRITER_INSERT_HEAD(__ifp) \ PSLIST_WRITER_INSERT_HEAD(&ifnet_pslist, (__ifp), if_pslist_entry) #define IFNET_WRITER_REMOVE(__ifp) \ PSLIST_WRITER_REMOVE((__ifp), if_pslist_entry) #define IFNET_WRITER_FOREACH(__ifp) \ PSLIST_WRITER_FOREACH((__ifp), &ifnet_pslist, struct ifnet, \ if_pslist_entry) #define IFNET_WRITER_NEXT(__ifp) \ PSLIST_WRITER_NEXT((__ifp), struct ifnet, if_pslist_entry) #define IFNET_WRITER_INSERT_AFTER(__ifp, __new) \ PSLIST_WRITER_INSERT_AFTER((__ifp), (__new), if_pslist_entry) #define IFNET_WRITER_EMPTY() \ (PSLIST_WRITER_FIRST(&ifnet_pslist, struct ifnet, if_pslist_entry) == NULL) #define IFNET_WRITER_INSERT_TAIL(__new) \ do { \ if (IFNET_WRITER_EMPTY()) { \ IFNET_WRITER_INSERT_HEAD(__new); \ } else { \ struct ifnet *__ifp; \ IFNET_WRITER_FOREACH(__ifp) { \ if (IFNET_WRITER_NEXT(__ifp) == NULL) { \ IFNET_WRITER_INSERT_AFTER(__ifp,\ (__new)); \ break; \ } \ } \ } \ } while (0) #define IFNET_LOCK(ifp) mutex_enter((ifp)->if_ioctl_lock) #define IFNET_UNLOCK(ifp) mutex_exit((ifp)->if_ioctl_lock) #define IFNET_LOCKED(ifp) mutex_owned((ifp)->if_ioctl_lock) #define IFNET_ASSERT_UNLOCKED(ifp) \ KDASSERT(mutex_ownable((ifp)->if_ioctl_lock)) extern struct pslist_head ifnet_pslist; extern kmutex_t ifnet_mtx; extern struct ifnet *lo0ifp; /* * ifq sysctl support */ int sysctl_ifq(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp, size_t newlen, struct ifqueue *ifq); /* symbolic names for terminal (per-protocol) CTL_IFQ_ nodes */ #define IFQCTL_LEN 1 #define IFQCTL_MAXLEN 2 #define IFQCTL_PEAK 3 #define IFQCTL_DROPS 4 /* * Hook for if_vlan - needed by if_agr */ MODULE_HOOK(if_vlan_vlan_input_hook, struct mbuf *, (struct ifnet *, struct mbuf *)); #endif /* _KERNEL */ #endif /* !_NET_IF_H_ */