NetBSD/sys/net/if.h

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/* $NetBSD: if.h,v 1.145 2009/10/05 21:25:05 dyoung 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.
*/
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/*
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
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*
* 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
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* 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.
*
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* @(#)if.h 8.3 (Berkeley) 2/9/95
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*/
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#ifndef _NET_IF_H_
#define _NET_IF_H_
#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
#if defined(_NETBSD_SOURCE)
#include <sys/mutex.h>
#include <sys/condvar.h>
#include <sys/socket.h>
#include <sys/queue.h>
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#include <net/dlt.h>
#include <net/pfil.h>
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/*
* 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>
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/*
* 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)
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* 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
*/
/* XXX fast fix for SNMP, going away soon */
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#include <sys/time.h>
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#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.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) \
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{ { 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.
*/
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 */
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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 */
/*
* 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;
};
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/*
* 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 ifnet { /* and the entries */
void *if_softc; /* lower-level data for this if */
TAILQ_ENTRY(ifnet) if_list; /* all struct ifnets are chained */
TAILQ_HEAD(, ifaddr) if_addrlist; /* linked list of addresses per if */
char if_xname[IFNAMSIZ]; /* external name (name + unit) */
int if_pcount; /* number of promiscuous listeners */
void * if_bpf; /* packet filter structure */
u_short if_index; /* numeric abbreviation for this if */
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short if_timer; /* time 'til if_watchdog called */
short if_flags; /* up/down, broadcast, etc. */
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short if__pad1; /* be nice to m68k ports */
struct if_data if_data; /* statistics and other data about if */
/*
* 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 *,
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_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_watchdog) /* timer routine */
(struct ifnet *);
void (*if_drain) /* routine to release resources */
(struct ifnet *);
struct ifaltq if_snd; /* output queue (includes altq) */
struct ifaddr *if_dl; /* identity of this interface. */
*** Summary *** When a link-layer address changes (e.g., ifconfig ex0 link 02:de:ad:be:ef:02 active), send a gratuitous ARP and/or a Neighbor Advertisement to update the network-/link-layer address bindings on our LAN peers. Refuse a change of ethernet address to the address 00:00:00:00:00:00 or to any multicast/broadcast address. (Thanks matt@.) Reorder ifnet ioctl operations so that driver ioctls may inherit the functions of their "class"---ether_ioctl(), fddi_ioctl(), et cetera---and the class ioctls may inherit from the generic ioctl, ifioctl_common(), but both driver- and class-ioctls may override the generic behavior. Make network drivers share more code. Distinguish a "factory" link-layer address from others for the purposes of both protecting that address from deletion and computing EUI64. Return consistent, appropriate error codes from network drivers. Improve readability. KNF. *** Details *** In if_attach(), always initialize the interface ioctl routine, ifnet->if_ioctl, if the driver has not already initialized it. Delete if_ioctl == NULL tests everywhere else, because it cannot happen. In the ioctl routines of network interfaces, inherit common ioctl behaviors by calling either ifioctl_common() or whichever ioctl routine is appropriate for the class of interface---e.g., ether_ioctl() for ethernets. Stop (ab)using SIOCSIFADDR and start to use SIOCINITIFADDR. In the user->kernel interface, SIOCSIFADDR's argument was an ifreq, but on the protocol->ifnet interface, SIOCSIFADDR's argument was an ifaddr. That was confusing, and it would work against me as I make it possible for a network interface to overload most ioctls. On the protocol->ifnet interface, replace SIOCSIFADDR with SIOCINITIFADDR. In ifioctl(), return EPERM if userland tries to invoke SIOCINITIFADDR. In ifioctl(), give the interface the first shot at handling most interface ioctls, and give the protocol the second shot, instead of the other way around. Finally, let compatibility code (COMPAT_OSOCK) take a shot. Pull device initialization out of switch statements under SIOCINITIFADDR. For example, pull ..._init() out of any switch statement that looks like this: switch (...->sa_family) { case ...: ..._init(); ... break; ... default: ..._init(); ... break; } Rewrite many if-else clauses that handle all permutations of IFF_UP and IFF_RUNNING to use a switch statement, switch (x & (IFF_UP|IFF_RUNNING)) { case 0: ... break; case IFF_RUNNING: ... break; case IFF_UP: ... break; case IFF_UP|IFF_RUNNING: ... break; } unifdef lots of code containing #ifdef FreeBSD, #ifdef NetBSD, and #ifdef SIOCSIFMTU, especially in fwip(4) and in ndis(4). In ipw(4), remove an if_set_sadl() call that is out of place. In nfe(4), reuse the jumbo MTU logic in ether_ioctl(). Let ethernets register a callback for setting h/w state such as promiscuous mode and the multicast filter in accord with a change in the if_flags: ether_set_ifflags_cb() registers a callback that returns ENETRESET if the caller should reset the ethernet by calling if_init(), 0 on success, != 0 on failure. Pull common code from ex(4), gem(4), nfe(4), sip(4), tlp(4), vge(4) into ether_ioctl(), and register if_flags callbacks for those drivers. Return ENOTTY instead of EINVAL for inappropriate ioctls. In zyd(4), use ENXIO instead of ENOTTY to indicate that the device is not any longer attached. Add to if_set_sadl() a boolean 'factory' argument that indicates whether a link-layer address was assigned by the factory or some other source. In a comment, recommend using the factory address for generating an EUI64, and update in6_get_hw_ifid() to prefer a factory address to any other link-layer address. Add a routing message, RTM_LLINFO_UPD, that tells protocols to update the binding of network-layer addresses to link-layer addresses. Implement this message in IPv4 and IPv6 by sending a gratuitous ARP or a neighbor advertisement, respectively. Generate RTM_LLINFO_UPD messages on a change of an interface's link-layer address. In ether_ioctl(), do not let SIOCALIFADDR set a link-layer address that is broadcast/multicast or equal to 00:00:00:00:00:00. Make ether_ioctl() call ifioctl_common() to handle ioctls that it does not understand. In gif(4), initialize if_softc and use it, instead of assuming that the gif_softc and ifp overlap. Let ifioctl_common() handle SIOCGIFADDR. Sprinkle rtcache_invariants(), which checks on DIAGNOSTIC kernels that certain invariants on a struct route are satisfied. In agr(4), rewrite agr_ioctl_filter() to be a bit more explicit about the ioctls that we do not allow on an agr(4) member interface. bzero -> memset. Delete unnecessary casts to void *. Use sockaddr_in_init() and sockaddr_in6_init(). Compare pointers with NULL instead of "testing truth". Replace some instances of (type *)0 with NULL. Change some K&R prototypes to ANSI C, and join lines.
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const struct sockaddr_dl *if_sadl; /* pointer to sockaddr_dl
* of if_dl
*/
/* if_hwdl: h/w identity
*
* 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;
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const uint8_t *if_broadcastaddr;/* linklevel broadcast bytestring */
void *if_bridge; /* bridge glue */
int if_dlt; /* data link type (<net/dlt.h>) */
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struct pfil_head if_pfil; /* filtering point */
uint64_t if_capabilities; /* interface capabilities */
uint64_t if_capenable; /* 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; /* M_CSUM_* flags for Tx */
int if_csum_flags_rx; /* M_CSUM_* flags for Rx */
void *if_afdata[AF_MAX];
struct mowner *if_mowner; /* who owns mbufs for this interface */
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void *if_agrprivate; /* used only when #if NAGR > 0 */
/*
* 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;
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};
#define if_mtu if_data.ifi_mtu
#define if_type if_data.ifi_type
#define if_addrlen if_data.ifi_addrlen
#define if_hdrlen if_data.ifi_hdrlen
#define if_metric if_data.ifi_metric
#define if_link_state if_data.ifi_link_state
#define if_baudrate if_data.ifi_baudrate
#define if_ipackets if_data.ifi_ipackets
#define if_ierrors if_data.ifi_ierrors
#define if_opackets if_data.ifi_opackets
#define if_oerrors if_data.ifi_oerrors
#define if_collisions if_data.ifi_collisions
#define if_ibytes if_data.ifi_ibytes
#define if_obytes if_data.ifi_obytes
#define if_imcasts if_data.ifi_imcasts
#define if_omcasts if_data.ifi_omcasts
#define if_iqdrops if_data.ifi_iqdrops
#define if_noproto if_data.ifi_noproto
#define if_lastchange if_data.ifi_lastchange
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#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 */
#define IFF_NOTRAILERS 0x0020 /* avoid use of trailers */
#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 */
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#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 IFFBITS \
"\020\1UP\2BROADCAST\3DEBUG\4LOOPBACK\5POINTOPOINT\6NOTRAILERS" \
"\7RUNNING\10NOARP\11PROMISC\12ALLMULTI\13OACTIVE\14SIMPLEX" \
"\15LINK0\16LINK1\17LINK2\20MULTICAST"
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/* flags set internally only: */
#define IFF_CANTCHANGE \
(IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
IFF_SIMPLEX|IFF_MULTICAST|IFF_ALLMULTI|IFF_PROMISC)
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/*
* Some convenience macros used for setting ifi_baudrate.
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* XXX 1000 vs. 1024? --thorpej@NetBSD.org
*/
#define IF_Kbps(x) ((x) * 1000) /* kilobits/sec. */
#define IF_Mbps(x) (IF_Kbps((x) * 1000)) /* megabits/sec. */
#define IF_Gbps(x) (IF_Mbps((x) * 1000)) /* gigabits/sec. */
/* Capabilities that interfaces can advertise. */
#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 IFCAPBITS \
"\020" \
"\10TSO4" \
"\11IP4CSUM_Rx" \
"\12IP4CSUM_Tx" \
"\13TCP4CSUM_Rx" \
"\14TCP4CSUM_Tx" \
"\15UDP4CSUM_Rx" \
"\16UDP4CSUM_Tx" \
"\17TCP6CSUM_Rx" \
"\20TCP6CSUM_Tx" \
"\21UDP6CSUM_Rx" \
"\22UDP6CSUM_Tx" \
"\23TSO6"
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/*
* 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
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* by these macros, which should be called with ipl raised to splnet().
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*/
#define IF_QFULL(ifq) ((ifq)->ifq_len >= (ifq)->ifq_maxlen)
#define IF_DROP(ifq) ((ifq)->ifq_drops++)
#define IF_ENQUEUE(ifq, m) do { \
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(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 { \
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(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 { \
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(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; \
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\
for (;;) { \
IF_DEQUEUE((ifq), __m0); \
if (__m0 == NULL) \
break; \
else \
m_freem(__m0); \
} \
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} while (/*CONSTCOND*/ 0)
#define IF_IS_EMPTY(ifq) ((ifq)->ifq_len == 0)
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#ifndef IFQ_MAXLEN
#define IFQ_MAXLEN 256
#endif
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#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;
};
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/*
* 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 */
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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 */
};
#define IFA_ROUTE RTF_UP /* (0x01) route installed */
/*
* Message format for use in obtaining information about interfaces
* from sysctl and the routing socket.
*/
struct if_msghdr {
u_short ifm_msglen; /* 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;/* statistics and other data about if */
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};
/*
* Message format for use in obtaining information about interface addresses
* from sysctl and the routing socket.
*/
struct ifa_msghdr {
u_short ifam_msglen; /* to skip over non-understood messages */
u_char ifam_version; /* future binary compatibility */
u_char ifam_type; /* message type */
int ifam_addrs; /* like rtm_addrs */
int ifam_flags; /* value of ifa_flags */
u_short ifam_index; /* index for associated ifp */
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; /* 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 */
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/*
* 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;
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short ifru_flags;
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;
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} 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 */
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#define ifr_flags ifr_ifru.ifru_flags /* 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
};
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#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 *
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 */
};
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struct ifaliasreq {
char ifra_name[IFNAMSIZ]; /* if name, e.g. "en0" */
struct sockaddr ifra_addr;
struct sockaddr ifra_dstaddr;
#define ifra_broadaddr ifra_dstaddr
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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; /* current media options */
int ifm_mask; /* don't care mask */
int ifm_status; /* media status */
int ifm_active; /* active options */
int ifm_count; /* # entries in ifm_ulist
array */
int *ifm_ulist; /* media words */
};
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struct ifdrv {
char ifd_name[IFNAMSIZ]; /* if name, e.g. "en0" */
unsigned long ifd_cmd;
size_t ifd_len;
void *ifd_data;
2005-02-27 01:45:09 +03:00
};
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/*
* 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;
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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 */
*** Summary *** When a link-layer address changes (e.g., ifconfig ex0 link 02:de:ad:be:ef:02 active), send a gratuitous ARP and/or a Neighbor Advertisement to update the network-/link-layer address bindings on our LAN peers. Refuse a change of ethernet address to the address 00:00:00:00:00:00 or to any multicast/broadcast address. (Thanks matt@.) Reorder ifnet ioctl operations so that driver ioctls may inherit the functions of their "class"---ether_ioctl(), fddi_ioctl(), et cetera---and the class ioctls may inherit from the generic ioctl, ifioctl_common(), but both driver- and class-ioctls may override the generic behavior. Make network drivers share more code. Distinguish a "factory" link-layer address from others for the purposes of both protecting that address from deletion and computing EUI64. Return consistent, appropriate error codes from network drivers. Improve readability. KNF. *** Details *** In if_attach(), always initialize the interface ioctl routine, ifnet->if_ioctl, if the driver has not already initialized it. Delete if_ioctl == NULL tests everywhere else, because it cannot happen. In the ioctl routines of network interfaces, inherit common ioctl behaviors by calling either ifioctl_common() or whichever ioctl routine is appropriate for the class of interface---e.g., ether_ioctl() for ethernets. Stop (ab)using SIOCSIFADDR and start to use SIOCINITIFADDR. In the user->kernel interface, SIOCSIFADDR's argument was an ifreq, but on the protocol->ifnet interface, SIOCSIFADDR's argument was an ifaddr. That was confusing, and it would work against me as I make it possible for a network interface to overload most ioctls. On the protocol->ifnet interface, replace SIOCSIFADDR with SIOCINITIFADDR. In ifioctl(), return EPERM if userland tries to invoke SIOCINITIFADDR. In ifioctl(), give the interface the first shot at handling most interface ioctls, and give the protocol the second shot, instead of the other way around. Finally, let compatibility code (COMPAT_OSOCK) take a shot. Pull device initialization out of switch statements under SIOCINITIFADDR. For example, pull ..._init() out of any switch statement that looks like this: switch (...->sa_family) { case ...: ..._init(); ... break; ... default: ..._init(); ... break; } Rewrite many if-else clauses that handle all permutations of IFF_UP and IFF_RUNNING to use a switch statement, switch (x & (IFF_UP|IFF_RUNNING)) { case 0: ... break; case IFF_RUNNING: ... break; case IFF_UP: ... break; case IFF_UP|IFF_RUNNING: ... break; } unifdef lots of code containing #ifdef FreeBSD, #ifdef NetBSD, and #ifdef SIOCSIFMTU, especially in fwip(4) and in ndis(4). In ipw(4), remove an if_set_sadl() call that is out of place. In nfe(4), reuse the jumbo MTU logic in ether_ioctl(). Let ethernets register a callback for setting h/w state such as promiscuous mode and the multicast filter in accord with a change in the if_flags: ether_set_ifflags_cb() registers a callback that returns ENETRESET if the caller should reset the ethernet by calling if_init(), 0 on success, != 0 on failure. Pull common code from ex(4), gem(4), nfe(4), sip(4), tlp(4), vge(4) into ether_ioctl(), and register if_flags callbacks for those drivers. Return ENOTTY instead of EINVAL for inappropriate ioctls. In zyd(4), use ENXIO instead of ENOTTY to indicate that the device is not any longer attached. Add to if_set_sadl() a boolean 'factory' argument that indicates whether a link-layer address was assigned by the factory or some other source. In a comment, recommend using the factory address for generating an EUI64, and update in6_get_hw_ifid() to prefer a factory address to any other link-layer address. Add a routing message, RTM_LLINFO_UPD, that tells protocols to update the binding of network-layer addresses to link-layer addresses. Implement this message in IPv4 and IPv6 by sending a gratuitous ARP or a neighbor advertisement, respectively. Generate RTM_LLINFO_UPD messages on a change of an interface's link-layer address. In ether_ioctl(), do not let SIOCALIFADDR set a link-layer address that is broadcast/multicast or equal to 00:00:00:00:00:00. Make ether_ioctl() call ifioctl_common() to handle ioctls that it does not understand. In gif(4), initialize if_softc and use it, instead of assuming that the gif_softc and ifp overlap. Let ifioctl_common() handle SIOCGIFADDR. Sprinkle rtcache_invariants(), which checks on DIAGNOSTIC kernels that certain invariants on a struct route are satisfied. In agr(4), rewrite agr_ioctl_filter() to be a bit more explicit about the ioctls that we do not allow on an agr(4) member interface. bzero -> memset. Delete unnecessary casts to void *. Use sockaddr_in_init() and sockaddr_in6_init(). Compare pointers with NULL instead of "testing truth". Replace some instances of (type *)0 with NULL. Change some K&R prototypes to ANSI C, and join lines.
2008-11-07 03:20:01 +03:00
#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 */
};
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#include <net/if_arp.h>
#endif /* _NETBSD_SOURCE */
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#ifdef _KERNEL
#ifdef IFAREF_DEBUG
#define IFAREF(ifa) \
do { \
printf("IFAREF: %s:%d %p -> %d\n", __FILE__, __LINE__, \
(ifa), ++(ifa)->ifa_refcnt); \
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} while (/*CONSTCOND*/ 0)
#define IFAFREE(ifa) \
do { \
if ((ifa)->ifa_refcnt <= 0) \
panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \
__LINE__, (ifa)); \
printf("IFAFREE: %s:%d %p -> %d\n", __FILE__, __LINE__, \
(ifa), --(ifa)->ifa_refcnt); \
if ((ifa)->ifa_refcnt == 0) \
ifafree(ifa); \
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} while (/*CONSTCOND*/ 0)
#else
#define IFAREF(ifa) (ifa)->ifa_refcnt++
#ifdef DIAGNOSTIC
#define IFAFREE(ifa) \
do { \
if ((ifa)->ifa_refcnt <= 0) \
panic("%s:%d: %p ifa_refcnt <= 0", __FILE__, \
__LINE__, (ifa)); \
if (--(ifa)->ifa_refcnt == 0) \
ifafree(ifa); \
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} while (/*CONSTCOND*/ 0)
#else
#define IFAFREE(ifa) \
do { \
if (--(ifa)->ifa_refcnt == 0) \
ifafree(ifa); \
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} while (/*CONSTCOND*/ 0)
#endif /* DIAGNOSTIC */
#endif /* IFAREF_DEBUG */
#ifdef ALTQ
#define ALTQ_DECL(x) x
#define ALTQ_COMMA ,
#define IFQ_ENQUEUE(ifq, m, pattr, err) \
do { \
if (ALTQ_IS_ENABLED((ifq))) \
ALTQ_ENQUEUE((ifq), (m), (pattr), (err)); \
else { \
if (IF_QFULL((ifq))) { \
m_freem((m)); \
(err) = ENOBUFS; \
} else { \
IF_ENQUEUE((ifq), (m)); \
(err) = 0; \
} \
} \
if ((err)) \
(ifq)->ifq_drops++; \
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} while (/*CONSTCOND*/ 0)
#define IFQ_DEQUEUE(ifq, m) \
do { \
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)); \
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} while (/*CONSTCOND*/ 0)
#define IFQ_POLL(ifq, m) \
do { \
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)); \
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} while (/*CONSTCOND*/ 0)
#define IFQ_PURGE(ifq) \
do { \
if (ALTQ_IS_ENABLED((ifq))) \
ALTQ_PURGE((ifq)); \
else \
IF_PURGE((ifq)); \
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} while (/*CONSTCOND*/ 0)
#define IFQ_SET_READY(ifq) \
do { \
(ifq)->altq_flags |= ALTQF_READY; \
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} while (/*CONSTCOND*/ 0)
#define IFQ_CLASSIFY(ifq, m, af, pattr) \
do { \
if (ALTQ_IS_ENABLED((ifq))) { \
if (ALTQ_NEEDS_CLASSIFY((ifq))) \
(pattr)->pattr_class = (*(ifq)->altq_classify) \
((ifq)->altq_clfier, (m), (af)); \
(pattr)->pattr_af = (af); \
(pattr)->pattr_hdr = mtod((m), void *); \
} \
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} while (/*CONSTCOND*/ 0)
#else /* ! ALTQ */
#define ALTQ_DECL(x) /* nothing */
#define ALTQ_COMMA
#define IFQ_ENQUEUE(ifq, m, pattr, err) \
do { \
if (IF_QFULL((ifq))) { \
m_freem((m)); \
(err) = ENOBUFS; \
} else { \
IF_ENQUEUE((ifq), (m)); \
(err) = 0; \
} \
if ((err)) \
(ifq)->ifq_drops++; \
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} while (/*CONSTCOND*/ 0)
#define IFQ_DEQUEUE(ifq, m) IF_DEQUEUE((ifq), (m))
#define IFQ_POLL(ifq, m) IF_POLL((ifq), (m))
#define IFQ_PURGE(ifq) IF_PURGE((ifq))
#define IFQ_SET_READY(ifq) /* nothing */
#define IFQ_CLASSIFY(ifq, m, af, pattr) /* nothing */
#endif /* ALTQ */
#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);
#define IFNET_FIRST() TAILQ_FIRST(&ifnet)
#define IFNET_NEXT(__ifp) TAILQ_NEXT((__ifp), if_list)
#define IFNET_FOREACH(__ifp) TAILQ_FOREACH(__ifp, &ifnet, if_list)
#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_EMPTY(__ifp) TAILQ_EMPTY(&(__ifp)->if_addrlist)
extern struct ifnet_head ifnet;
extern struct ifnet **ifindex2ifnet;
extern struct ifnet *lo0ifp;
extern size_t if_indexlim;
void ether_input(struct ifnet *, struct mbuf *);
int ifreq_setaddr(u_long, struct ifreq *, const struct sockaddr *);
struct ifnet *if_alloc(u_char);
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 *);
*** Summary *** When a link-layer address changes (e.g., ifconfig ex0 link 02:de:ad:be:ef:02 active), send a gratuitous ARP and/or a Neighbor Advertisement to update the network-/link-layer address bindings on our LAN peers. Refuse a change of ethernet address to the address 00:00:00:00:00:00 or to any multicast/broadcast address. (Thanks matt@.) Reorder ifnet ioctl operations so that driver ioctls may inherit the functions of their "class"---ether_ioctl(), fddi_ioctl(), et cetera---and the class ioctls may inherit from the generic ioctl, ifioctl_common(), but both driver- and class-ioctls may override the generic behavior. Make network drivers share more code. Distinguish a "factory" link-layer address from others for the purposes of both protecting that address from deletion and computing EUI64. Return consistent, appropriate error codes from network drivers. Improve readability. KNF. *** Details *** In if_attach(), always initialize the interface ioctl routine, ifnet->if_ioctl, if the driver has not already initialized it. Delete if_ioctl == NULL tests everywhere else, because it cannot happen. In the ioctl routines of network interfaces, inherit common ioctl behaviors by calling either ifioctl_common() or whichever ioctl routine is appropriate for the class of interface---e.g., ether_ioctl() for ethernets. Stop (ab)using SIOCSIFADDR and start to use SIOCINITIFADDR. In the user->kernel interface, SIOCSIFADDR's argument was an ifreq, but on the protocol->ifnet interface, SIOCSIFADDR's argument was an ifaddr. That was confusing, and it would work against me as I make it possible for a network interface to overload most ioctls. On the protocol->ifnet interface, replace SIOCSIFADDR with SIOCINITIFADDR. In ifioctl(), return EPERM if userland tries to invoke SIOCINITIFADDR. In ifioctl(), give the interface the first shot at handling most interface ioctls, and give the protocol the second shot, instead of the other way around. Finally, let compatibility code (COMPAT_OSOCK) take a shot. Pull device initialization out of switch statements under SIOCINITIFADDR. For example, pull ..._init() out of any switch statement that looks like this: switch (...->sa_family) { case ...: ..._init(); ... break; ... default: ..._init(); ... break; } Rewrite many if-else clauses that handle all permutations of IFF_UP and IFF_RUNNING to use a switch statement, switch (x & (IFF_UP|IFF_RUNNING)) { case 0: ... break; case IFF_RUNNING: ... break; case IFF_UP: ... break; case IFF_UP|IFF_RUNNING: ... break; } unifdef lots of code containing #ifdef FreeBSD, #ifdef NetBSD, and #ifdef SIOCSIFMTU, especially in fwip(4) and in ndis(4). In ipw(4), remove an if_set_sadl() call that is out of place. In nfe(4), reuse the jumbo MTU logic in ether_ioctl(). Let ethernets register a callback for setting h/w state such as promiscuous mode and the multicast filter in accord with a change in the if_flags: ether_set_ifflags_cb() registers a callback that returns ENETRESET if the caller should reset the ethernet by calling if_init(), 0 on success, != 0 on failure. Pull common code from ex(4), gem(4), nfe(4), sip(4), tlp(4), vge(4) into ether_ioctl(), and register if_flags callbacks for those drivers. Return ENOTTY instead of EINVAL for inappropriate ioctls. In zyd(4), use ENXIO instead of ENOTTY to indicate that the device is not any longer attached. Add to if_set_sadl() a boolean 'factory' argument that indicates whether a link-layer address was assigned by the factory or some other source. In a comment, recommend using the factory address for generating an EUI64, and update in6_get_hw_ifid() to prefer a factory address to any other link-layer address. Add a routing message, RTM_LLINFO_UPD, that tells protocols to update the binding of network-layer addresses to link-layer addresses. Implement this message in IPv4 and IPv6 by sending a gratuitous ARP or a neighbor advertisement, respectively. Generate RTM_LLINFO_UPD messages on a change of an interface's link-layer address. In ether_ioctl(), do not let SIOCALIFADDR set a link-layer address that is broadcast/multicast or equal to 00:00:00:00:00:00. Make ether_ioctl() call ifioctl_common() to handle ioctls that it does not understand. In gif(4), initialize if_softc and use it, instead of assuming that the gif_softc and ifp overlap. Let ifioctl_common() handle SIOCGIFADDR. Sprinkle rtcache_invariants(), which checks on DIAGNOSTIC kernels that certain invariants on a struct route are satisfied. In agr(4), rewrite agr_ioctl_filter() to be a bit more explicit about the ioctls that we do not allow on an agr(4) member interface. bzero -> memset. Delete unnecessary casts to void *. Use sockaddr_in_init() and sockaddr_in6_init(). Compare pointers with NULL instead of "testing truth". Replace some instances of (type *)0 with NULL. Change some K&R prototypes to ANSI C, and join lines.
2008-11-07 03:20:01 +03:00
void if_set_sadl(struct ifnet *, const void *, u_char, bool);
void if_alloc_sadl(struct ifnet *);
void if_free_sadl(struct ifnet *);
void if_attach(struct ifnet *);
void if_attachdomain(void);
void if_attachdomain1(struct ifnet *);
void if_deactivate(struct ifnet *);
void if_purgeaddrs(struct ifnet *, int, void (*)(struct ifaddr *));
void if_detach(struct ifnet *);
void if_down(struct ifnet *);
void if_link_state_change(struct ifnet *, int);
void if_slowtimo(void *);
void if_up(struct ifnet *);
int ifconf(u_long, void *);
void ifinit(void);
void ifinit1(void);
int ifaddrpref_ioctl(struct socket *, u_long, void *, struct ifnet *,
lwp_t *);
int ifioctl(struct socket *, u_long, void *, struct lwp *);
int ifioctl_common(struct ifnet *, u_long, void *);
int ifpromisc(struct ifnet *, int);
struct ifnet *ifunit(const char *);
void ifa_insert(struct ifnet *, struct ifaddr *);
void ifa_remove(struct ifnet *, struct ifaddr *);
struct ifaddr *ifa_ifwithaddr(const struct sockaddr *);
struct ifaddr *ifa_ifwithaf(int);
struct ifaddr *ifa_ifwithdstaddr(const struct sockaddr *);
struct ifaddr *ifa_ifwithnet(const struct sockaddr *);
struct ifaddr *ifa_ifwithladdr(const struct sockaddr *);
struct ifaddr *ifa_ifwithroute(int, const struct sockaddr *,
const struct sockaddr *);
struct ifaddr *ifaof_ifpforaddr(const struct sockaddr *, struct ifnet *);
void ifafree(struct ifaddr *);
void link_rtrequest(int, struct rtentry *, const struct rt_addrinfo *);
void if_clone_attach(struct if_clone *);
void if_clone_detach(struct if_clone *);
int if_clone_create(const char *);
int if_clone_destroy(const char *);
int ifq_enqueue(struct ifnet *, struct mbuf * ALTQ_COMMA
ALTQ_DECL(struct altq_pktattr *));
int ifq_enqueue2(struct ifnet *, struct ifqueue *, struct mbuf * ALTQ_COMMA
ALTQ_DECL(struct altq_pktattr *));
int loioctl(struct ifnet *, u_long, void *);
void loopattach(int);
int looutput(struct ifnet *,
struct mbuf *, const struct sockaddr *, struct rtentry *);
void lortrequest(int, struct rtentry *, const struct rt_addrinfo *);
/*
* 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 *, struct rtentry *);
void if_nullinput(struct ifnet *, struct mbuf *);
void if_nullstart(struct ifnet *);
int if_nullioctl(struct ifnet *, u_long, void *);
int if_nullinit(struct ifnet *);
void if_nullstop(struct ifnet *, int);
void if_nullwatchdog(struct ifnet *);
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
/*
* 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
#define IFQCTL_MAXID 5
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#endif /* _KERNEL */
#ifdef _NETBSD_SOURCE
/*
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* sysctl for ifq (per-protocol packet input queue variant of ifqueue)
*/
#define CTL_IFQ_NAMES { \
{ 0, 0 }, \
{ "len", CTLTYPE_INT }, \
{ "maxlen", CTLTYPE_INT }, \
{ "peak", CTLTYPE_INT }, \
{ "drops", CTLTYPE_INT }, \
}
#endif /* _NETBSD_SOURCE */
1997-04-09 01:29:26 +04:00
#endif /* !_NET_IF_H_ */