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NetBSD/sys/net/if.h
roy 3fa9fd328e net: remove IFEF_NO_LINK_STATE_CHANGE 
This flag was only set for virtual interfaces.
All virtual interfaces have a means of knowing if they are going to work
or not and as such now support link state changes.

If we want this flag back, it should be used as an indicator that
the interfaces does not support link state changes that userland can use
so it can make a decision on what to do when the link state is UNKNOWN.
2020-10-15 10:20:44 +00:00

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/* $NetBSD: if.h,v 1.289 2020/10/15 10:20:44 roy 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 <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;
int 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 *);
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_agrprivate; /* ?: used only when #if NAGR > 0 */
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
* and 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 callout *if_slowtimo_ch;/* :: */
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;
void (*if_link_state_changed)(struct ifnet *, int);
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: */
#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 */
/* 0x0020 was IFF_NOTRAILERS */
#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 /* receive all multicast packets */
#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" \
"\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 compatiblity definitons.
*/
#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))
#define IFQ_ENQUEUE_ISR(ifq, m, isr) \
do { \
IFQ_LOCK(inq); \
if (IF_QFULL(inq)) { \
IF_DROP(inq); \
IFQ_UNLOCK(inq); \
m_freem(m); \
} else { \
IF_ENQUEUE(inq, m); \
IFQ_UNLOCK(inq); \
schednetisr(isr); \
} \
} while (/*CONSTCOND*/ 0)
#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);
int if_initialize(struct ifnet *);
void if_register(struct ifnet *);
int 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 *);
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 *);
/*
* 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, void, (struct ifnet *, struct mbuf *));
#endif /* _KERNEL */
#endif /* !_NET_IF_H_ */
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