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/* $NetBSD: if.h,v 1.305 2023/10/09 11:55:34 riastradh 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 <stdbool.h>
#endif
#include <sys/featuretest.h>
/*
* 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 <sys/socket.h>
#include <sys/queue.h>
#include <sys/mutex.h>
#include <sys/hook.h>
#include <net/dlt.h>
#include <net/pfil.h>
#ifdef _KERNEL
#include <net/pktqueue.h>
#include <sys/pslist.h>
#include <sys/pserialize.h>
#include <sys/psref.h>
#include <sys/module_hook.h>
#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 <altq/if_altq.h>
/*
* 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 <sys/time.h>
#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 <sys/percpu.h>
#include <sys/callout.h>
#include <sys/rwlock.h>
#include <sys/workqueue.h>
#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 (<net/dlt.h>) */
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 <net/if_stats.h>
#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 remvoed 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 <net/if_arp.h>
#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 <sys/mallocvar.h>
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_ifwithaf(int);
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 *);
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 <sys/cdefs.h>
__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_ */
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