File: [local] / sys / net / if.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:16:21 2008 UTC (16 years, 6 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: if.c,v 1.165 2007/07/06 14:00:59 naddy Exp $ */
/* $NetBSD: if.c,v 1.35 1996/05/07 05:26:04 thorpej Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* 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 project 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 PROJECT 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 PROJECT 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) 1980, 1986, 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.c 8.3 (Berkeley) 1/4/94
*/
#include "bluetooth.h"
#include "bpfilter.h"
#include "bridge.h"
#include "carp.h"
#include "pf.h"
#include "trunk.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/proc.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/protosw.h>
#include <sys/kernel.h>
#include <sys/ioctl.h>
#include <sys/domain.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_media.h>
#include <net/if_types.h>
#include <net/route.h>
#include <net/netisr.h>
#include <dev/rndvar.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/if_ether.h>
#include <netinet/igmp.h>
#ifdef MROUTING
#include <netinet/ip_mroute.h>
#endif
#endif
#ifdef INET6
#ifndef INET
#include <netinet/in.h>
#endif
#include <netinet6/in6_ifattach.h>
#include <netinet6/nd6.h>
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#endif
#if NTRUNK > 0
#include <net/if_trunk.h>
#endif
#if NBRIDGE > 0
#include <net/if_bridge.h>
#endif
#if NCARP > 0
#include <netinet/ip_carp.h>
#endif
#if NPF > 0
#include <net/pfvar.h>
#endif
void if_attachsetup(struct ifnet *);
void if_attachdomain1(struct ifnet *);
int ifqmaxlen = IFQ_MAXLEN;
void if_detach_queues(struct ifnet *, struct ifqueue *);
void if_detached_start(struct ifnet *);
int if_detached_ioctl(struct ifnet *, u_long, caddr_t);
int if_detached_init(struct ifnet *);
void if_detached_watchdog(struct ifnet *);
int if_getgroup(caddr_t, struct ifnet *);
int if_getgroupmembers(caddr_t);
int if_getgroupattribs(caddr_t);
int if_setgroupattribs(caddr_t);
int if_clone_list(struct if_clonereq *);
struct if_clone *if_clone_lookup(const char *, int *);
void if_congestion_clear(void *);
int if_group_egress_build(void);
TAILQ_HEAD(, ifg_group) ifg_head;
LIST_HEAD(, if_clone) if_cloners = LIST_HEAD_INITIALIZER(if_cloners);
int if_cloners_count;
/*
* Network interface utility routines.
*
* Routines with ifa_ifwith* names take sockaddr *'s as
* parameters.
*/
void
ifinit()
{
static struct timeout if_slowtim;
timeout_set(&if_slowtim, if_slowtimo, &if_slowtim);
if_slowtimo(&if_slowtim);
}
static int if_index = 0;
int if_indexlim = 0;
struct ifaddr **ifnet_addrs = NULL;
struct ifnet **ifindex2ifnet = NULL;
struct ifnet_head ifnet;
struct ifnet *lo0ifp;
/*
* Attach an interface to the
* list of "active" interfaces.
*/
void
if_attachsetup(struct ifnet *ifp)
{
struct ifaddr *ifa;
int wrapped = 0;
if (ifindex2ifnet == 0)
if_index = 1;
else {
while (if_index < if_indexlim &&
ifindex2ifnet[if_index] != NULL) {
if_index++;
/*
* If we hit USHRT_MAX, we skip back to 1 since
* there are a number of places where the value
* of ifp->if_index or if_index itself is compared
* to or stored in an unsigned short. By
* jumping back, we won't botch those assignments
* or comparisons.
*/
if (if_index == USHRT_MAX) {
if_index = 1;
/*
* However, if we have to jump back to 1
* *twice* without finding an empty
* slot in ifindex2ifnet[], then there
* there are too many (>65535) interfaces.
*/
if (wrapped++)
panic("too many interfaces");
}
}
}
ifp->if_index = if_index;
/*
* We have some arrays that should be indexed by if_index.
* since if_index will grow dynamically, they should grow too.
* struct ifaddr **ifnet_addrs
* struct ifnet **ifindex2ifnet
*/
if (ifnet_addrs == 0 || ifindex2ifnet == 0 || if_index >= if_indexlim) {
size_t m, n, oldlim;
caddr_t q;
oldlim = if_indexlim;
if (if_indexlim == 0)
if_indexlim = 8;
while (if_index >= if_indexlim)
if_indexlim <<= 1;
/* grow ifnet_addrs */
m = oldlim * sizeof(ifa);
n = if_indexlim * sizeof(ifa);
q = (caddr_t)malloc(n, M_IFADDR, M_WAITOK);
bzero(q, n);
if (ifnet_addrs) {
bcopy((caddr_t)ifnet_addrs, q, m);
free((caddr_t)ifnet_addrs, M_IFADDR);
}
ifnet_addrs = (struct ifaddr **)q;
/* grow ifindex2ifnet */
m = oldlim * sizeof(struct ifnet *);
n = if_indexlim * sizeof(struct ifnet *);
q = (caddr_t)malloc(n, M_IFADDR, M_WAITOK);
bzero(q, n);
if (ifindex2ifnet) {
bcopy((caddr_t)ifindex2ifnet, q, m);
free((caddr_t)ifindex2ifnet, M_IFADDR);
}
ifindex2ifnet = (struct ifnet **)q;
}
TAILQ_INIT(&ifp->if_groups);
if_addgroup(ifp, IFG_ALL);
ifindex2ifnet[if_index] = ifp;
if (ifp->if_snd.ifq_maxlen == 0)
ifp->if_snd.ifq_maxlen = ifqmaxlen;
#ifdef ALTQ
ifp->if_snd.altq_type = 0;
ifp->if_snd.altq_disc = NULL;
ifp->if_snd.altq_flags &= ALTQF_CANTCHANGE;
ifp->if_snd.altq_tbr = NULL;
ifp->if_snd.altq_ifp = ifp;
#endif
if (domains)
if_attachdomain1(ifp);
#if NPF > 0
pfi_attach_ifnet(ifp);
#endif
/* Announce the interface. */
rt_ifannouncemsg(ifp, IFAN_ARRIVAL);
}
/*
* Allocate the link level name for the specified interface. This
* is an attachment helper. It must be called after ifp->if_addrlen
* is initialized, which may not be the case when if_attach() is
* called.
*/
void
if_alloc_sadl(struct ifnet *ifp)
{
unsigned socksize, ifasize;
int namelen, masklen;
struct sockaddr_dl *sdl;
struct ifaddr *ifa;
/*
* If the interface already has a link name, release it
* now. This is useful for interfaces that can change
* link types, and thus switch link names often.
*/
if (ifp->if_sadl != NULL)
if_free_sadl(ifp);
namelen = strlen(ifp->if_xname);
#define _offsetof(t, m) ((int)((caddr_t)&((t *)0)->m))
masklen = _offsetof(struct sockaddr_dl, sdl_data[0]) + namelen;
socksize = masklen + ifp->if_addrlen;
#define ROUNDUP(a) (1 + (((a) - 1) | (sizeof(long) - 1)))
if (socksize < sizeof(*sdl))
socksize = sizeof(*sdl);
socksize = ROUNDUP(socksize);
ifasize = sizeof(*ifa) + 2 * socksize;
ifa = (struct ifaddr *)malloc(ifasize, M_IFADDR, M_WAITOK);
bzero((caddr_t)ifa, ifasize);
sdl = (struct sockaddr_dl *)(ifa + 1);
sdl->sdl_len = socksize;
sdl->sdl_family = AF_LINK;
bcopy(ifp->if_xname, sdl->sdl_data, namelen);
sdl->sdl_nlen = namelen;
sdl->sdl_alen = ifp->if_addrlen;
sdl->sdl_index = ifp->if_index;
sdl->sdl_type = ifp->if_type;
ifnet_addrs[ifp->if_index] = ifa;
ifa->ifa_ifp = ifp;
ifa->ifa_rtrequest = link_rtrequest;
TAILQ_INSERT_HEAD(&ifp->if_addrlist, ifa, ifa_list);
ifa->ifa_addr = (struct sockaddr *)sdl;
ifp->if_sadl = sdl;
sdl = (struct sockaddr_dl *)(socksize + (caddr_t)sdl);
ifa->ifa_netmask = (struct sockaddr *)sdl;
sdl->sdl_len = masklen;
while (namelen != 0)
sdl->sdl_data[--namelen] = 0xff;
}
/*
* Free the link level name for the specified interface. This is
* a detach helper. This is called from if_detach() or from
* link layer type specific detach functions.
*/
void
if_free_sadl(struct ifnet *ifp)
{
struct ifaddr *ifa;
int s;
ifa = ifnet_addrs[ifp->if_index];
if (ifa == NULL)
return;
s = splnet();
rtinit(ifa, RTM_DELETE, 0);
#if 0
TAILQ_REMOVE(&ifp->if_addrlist, ifa, ifa_list);
ifnet_addrs[ifp->if_index] = NULL;
#endif
ifp->if_sadl = NULL;
splx(s);
}
void
if_attachdomain()
{
struct ifnet *ifp;
int s;
s = splnet();
for (ifp = TAILQ_FIRST(&ifnet); ifp; ifp = TAILQ_NEXT(ifp, if_list))
if_attachdomain1(ifp);
splx(s);
}
void
if_attachdomain1(struct ifnet *ifp)
{
struct domain *dp;
int s;
s = splnet();
/* address family dependent data region */
bzero(ifp->if_afdata, sizeof(ifp->if_afdata));
for (dp = domains; dp; dp = dp->dom_next) {
if (dp->dom_ifattach)
ifp->if_afdata[dp->dom_family] =
(*dp->dom_ifattach)(ifp);
}
splx(s);
}
void
if_attachhead(struct ifnet *ifp)
{
if (if_index == 0) {
TAILQ_INIT(&ifnet);
TAILQ_INIT(&ifg_head);
}
TAILQ_INIT(&ifp->if_addrlist);
ifp->if_addrhooks = malloc(sizeof(*ifp->if_addrhooks),
M_TEMP, M_NOWAIT);
if (ifp->if_addrhooks == NULL)
panic("if_attachhead: malloc");
TAILQ_INIT(ifp->if_addrhooks);
ifp->if_linkstatehooks = malloc(sizeof(*ifp->if_linkstatehooks),
M_TEMP, M_NOWAIT);
if (ifp->if_linkstatehooks == NULL)
panic("if_attachhead: malloc");
TAILQ_INIT(ifp->if_linkstatehooks);
ifp->if_detachhooks = malloc(sizeof(*ifp->if_detachhooks),
M_TEMP, M_NOWAIT);
if (ifp->if_detachhooks == NULL)
panic("if_attachhead: malloc");
TAILQ_INIT(ifp->if_detachhooks);
TAILQ_INSERT_HEAD(&ifnet, ifp, if_list);
if_attachsetup(ifp);
}
void
if_attach(struct ifnet *ifp)
{
#if NCARP > 0
struct ifnet *before = NULL;
#endif
if (if_index == 0) {
TAILQ_INIT(&ifnet);
TAILQ_INIT(&ifg_head);
}
TAILQ_INIT(&ifp->if_addrlist);
ifp->if_addrhooks = malloc(sizeof(*ifp->if_addrhooks),
M_TEMP, M_NOWAIT);
if (ifp->if_addrhooks == NULL)
panic("if_attach: malloc");
TAILQ_INIT(ifp->if_addrhooks);
ifp->if_linkstatehooks = malloc(sizeof(*ifp->if_linkstatehooks),
M_TEMP, M_NOWAIT);
if (ifp->if_linkstatehooks == NULL)
panic("if_attach: malloc");
TAILQ_INIT(ifp->if_linkstatehooks);
ifp->if_detachhooks = malloc(sizeof(*ifp->if_detachhooks),
M_TEMP, M_NOWAIT);
if (ifp->if_detachhooks == NULL)
panic("if_attach: malloc");
TAILQ_INIT(ifp->if_detachhooks);
#if NCARP > 0
if (ifp->if_type != IFT_CARP)
TAILQ_FOREACH(before, &ifnet, if_list)
if (before->if_type == IFT_CARP)
break;
if (before == NULL)
TAILQ_INSERT_TAIL(&ifnet, ifp, if_list);
else
TAILQ_INSERT_BEFORE(before, ifp, if_list);
#else
TAILQ_INSERT_TAIL(&ifnet, ifp, if_list);
#endif
if_attachsetup(ifp);
}
/*
* Detach an interface from everything in the kernel. Also deallocate
* private resources.
* XXX So far only the INET protocol family has been looked over
* wrt resource usage that needs to be decoupled.
*/
void
if_detach(struct ifnet *ifp)
{
struct ifaddr *ifa;
struct ifg_list *ifg;
int s = splnet();
struct domain *dp;
ifp->if_flags &= ~IFF_OACTIVE;
ifp->if_start = if_detached_start;
ifp->if_ioctl = if_detached_ioctl;
ifp->if_init = if_detached_init;
ifp->if_watchdog = if_detached_watchdog;
/* Call detach hooks, ie. to remove vlan interfaces */
dohooks(ifp->if_detachhooks, HOOK_REMOVE | HOOK_FREE);
#if NTRUNK > 0
if (ifp->if_type == IFT_IEEE8023ADLAG)
trunk_port_ifdetach(ifp);
#endif
#if NBRIDGE > 0
/* Remove the interface from any bridge it is part of. */
if (ifp->if_bridge)
bridge_ifdetach(ifp);
#endif
#if NCARP > 0
/* Remove the interface from any carp group it is a part of. */
if (ifp->if_carp && ifp->if_type != IFT_CARP)
carp_ifdetach(ifp);
#endif
#if NBPFILTER > 0
bpfdetach(ifp);
#endif
#ifdef ALTQ
if (ALTQ_IS_ENABLED(&ifp->if_snd))
altq_disable(&ifp->if_snd);
if (ALTQ_IS_ATTACHED(&ifp->if_snd))
altq_detach(&ifp->if_snd);
#endif
rt_if_remove(ifp);
#ifdef INET
rti_delete(ifp);
#if NETHER > 0
myip_ifp = NULL;
#endif
#ifdef MROUTING
vif_delete(ifp);
#endif
#endif
#ifdef INET6
in6_ifdetach(ifp);
#endif
#if NPF > 0
pfi_detach_ifnet(ifp);
#endif
/*
* remove packets came from ifp, from software interrupt queues.
* net/netisr_dispatch.h is not usable, as some of them use
* strange queue names.
*/
#define IF_DETACH_QUEUES(x) \
do { \
extern struct ifqueue x; \
if_detach_queues(ifp, & x); \
} while (0)
#ifdef INET
IF_DETACH_QUEUES(arpintrq);
IF_DETACH_QUEUES(ipintrq);
#endif
#ifdef INET6
IF_DETACH_QUEUES(ip6intrq);
#endif
#ifdef NETATALK
IF_DETACH_QUEUES(atintrq1);
IF_DETACH_QUEUES(atintrq2);
#endif
#ifdef NATM
IF_DETACH_QUEUES(natmintrq);
#endif
#undef IF_DETACH_QUEUES
/*
* XXX transient ifp refs? inpcb.ip_moptions.imo_multicast_ifp?
* Other network stacks than INET?
*/
/* Remove the interface from the list of all interfaces. */
TAILQ_REMOVE(&ifnet, ifp, if_list);
/*
* Deallocate private resources.
*/
while ((ifa = TAILQ_FIRST(&ifp->if_addrlist)) != NULL) {
TAILQ_REMOVE(&ifp->if_addrlist, ifa, ifa_list);
#ifdef INET
if (ifa->ifa_addr->sa_family == AF_INET)
TAILQ_REMOVE(&in_ifaddr, (struct in_ifaddr *)ifa,
ia_list);
#endif
/* XXX if_free_sadl needs this */
if (ifa == ifnet_addrs[ifp->if_index])
continue;
ifa->ifa_ifp = NULL;
IFAFREE(ifa);
}
for (ifg = TAILQ_FIRST(&ifp->if_groups); ifg;
ifg = TAILQ_FIRST(&ifp->if_groups))
if_delgroup(ifp, ifg->ifgl_group->ifg_group);
if_free_sadl(ifp);
ifnet_addrs[ifp->if_index]->ifa_ifp = NULL;
IFAFREE(ifnet_addrs[ifp->if_index]);
ifnet_addrs[ifp->if_index] = NULL;
free(ifp->if_addrhooks, M_TEMP);
free(ifp->if_linkstatehooks, M_TEMP);
free(ifp->if_detachhooks, M_TEMP);
for (dp = domains; dp; dp = dp->dom_next) {
if (dp->dom_ifdetach && ifp->if_afdata[dp->dom_family])
(*dp->dom_ifdetach)(ifp,
ifp->if_afdata[dp->dom_family]);
}
/* Announce that the interface is gone. */
rt_ifannouncemsg(ifp, IFAN_DEPARTURE);
splx(s);
}
void
if_detach_queues(struct ifnet *ifp, struct ifqueue *q)
{
struct mbuf *m, *prev, *next;
prev = NULL;
for (m = q->ifq_head; m; m = next) {
next = m->m_nextpkt;
#ifdef DIAGNOSTIC
if ((m->m_flags & M_PKTHDR) == 0) {
prev = m;
continue;
}
#endif
if (m->m_pkthdr.rcvif != ifp) {
prev = m;
continue;
}
if (prev)
prev->m_nextpkt = m->m_nextpkt;
else
q->ifq_head = m->m_nextpkt;
if (q->ifq_tail == m)
q->ifq_tail = prev;
q->ifq_len--;
m->m_nextpkt = NULL;
m_freem(m);
IF_DROP(q);
}
}
/*
* Create a clone network interface.
*/
int
if_clone_create(const char *name)
{
struct if_clone *ifc;
struct ifnet *ifp;
int unit, ret;
ifc = if_clone_lookup(name, &unit);
if (ifc == NULL)
return (EINVAL);
if (ifunit(name) != NULL)
return (EEXIST);
if ((ret = (*ifc->ifc_create)(ifc, unit)) == 0 &&
(ifp = ifunit(name)) != NULL)
if_addgroup(ifp, ifc->ifc_name);
return (ret);
}
/*
* Destroy a clone network interface.
*/
int
if_clone_destroy(const char *name)
{
struct if_clone *ifc;
struct ifnet *ifp;
int s, ret;
ifc = if_clone_lookup(name, NULL);
if (ifc == NULL)
return (EINVAL);
ifp = ifunit(name);
if (ifp == NULL)
return (ENXIO);
if (ifc->ifc_destroy == NULL)
return (EOPNOTSUPP);
if (ifp->if_flags & IFF_UP) {
s = splnet();
if_down(ifp);
splx(s);
}
if_delgroup(ifp, ifc->ifc_name);
if ((ret = (*ifc->ifc_destroy)(ifp)) != 0)
if_addgroup(ifp, ifc->ifc_name);
return (ret);
}
/*
* Look up a network interface cloner.
*/
struct if_clone *
if_clone_lookup(const char *name, int *unitp)
{
struct if_clone *ifc;
const char *cp;
int unit;
/* separate interface name from unit */
for (cp = name;
cp - name < IFNAMSIZ && *cp && (*cp < '0' || *cp > '9');
cp++)
continue;
if (cp == name || cp - name == IFNAMSIZ || !*cp)
return (NULL); /* No name or unit number */
if (cp - name < IFNAMSIZ-1 && *cp == '0' && cp[1] != '\0')
return (NULL); /* unit number 0 padded */
LIST_FOREACH(ifc, &if_cloners, ifc_list) {
if (strlen(ifc->ifc_name) == cp - name &&
!strncmp(name, ifc->ifc_name, cp - name))
break;
}
if (ifc == NULL)
return (NULL);
unit = 0;
while (cp - name < IFNAMSIZ && *cp) {
if (*cp < '0' || *cp > '9' ||
unit > (INT_MAX - (*cp - '0')) / 10) {
/* Bogus unit number. */
return (NULL);
}
unit = (unit * 10) + (*cp++ - '0');
}
if (unitp != NULL)
*unitp = unit;
return (ifc);
}
/*
* Register a network interface cloner.
*/
void
if_clone_attach(struct if_clone *ifc)
{
LIST_INSERT_HEAD(&if_cloners, ifc, ifc_list);
if_cloners_count++;
}
/*
* Unregister a network interface cloner.
*/
void
if_clone_detach(struct if_clone *ifc)
{
LIST_REMOVE(ifc, ifc_list);
if_cloners_count--;
}
/*
* Provide list of interface cloners to userspace.
*/
int
if_clone_list(struct if_clonereq *ifcr)
{
char outbuf[IFNAMSIZ], *dst;
struct if_clone *ifc;
int count, error = 0;
ifcr->ifcr_total = if_cloners_count;
if ((dst = ifcr->ifcr_buffer) == NULL) {
/* Just asking how many there are. */
return (0);
}
if (ifcr->ifcr_count < 0)
return (EINVAL);
count = (if_cloners_count < ifcr->ifcr_count) ?
if_cloners_count : ifcr->ifcr_count;
for (ifc = LIST_FIRST(&if_cloners); ifc != NULL && count != 0;
ifc = LIST_NEXT(ifc, ifc_list), count--, dst += IFNAMSIZ) {
bzero(outbuf, sizeof outbuf);
strlcpy(outbuf, ifc->ifc_name, IFNAMSIZ);
error = copyout(outbuf, dst, IFNAMSIZ);
if (error)
break;
}
return (error);
}
/*
* set queue congestion marker and register timeout to clear it
*/
void
if_congestion(struct ifqueue *ifq)
{
/* Not currently needed, all callers check this */
if (ifq->ifq_congestion)
return;
ifq->ifq_congestion = malloc(sizeof(struct timeout), M_TEMP, M_NOWAIT);
if (ifq->ifq_congestion == NULL)
return;
timeout_set(ifq->ifq_congestion, if_congestion_clear, ifq);
timeout_add(ifq->ifq_congestion, hz / 100);
}
/*
* clear the congestion flag
*/
void
if_congestion_clear(void *arg)
{
struct ifqueue *ifq = arg;
struct timeout *to = ifq->ifq_congestion;
ifq->ifq_congestion = NULL;
free(to, M_TEMP);
}
/*
* Locate an interface based on a complete address.
*/
/*ARGSUSED*/
struct ifaddr *
ifa_ifwithaddr(struct sockaddr *addr)
{
struct ifnet *ifp;
struct ifaddr *ifa;
#define equal(a1, a2) \
(bcmp((caddr_t)(a1), (caddr_t)(a2), \
((struct sockaddr *)(a1))->sa_len) == 0)
TAILQ_FOREACH(ifp, &ifnet, if_list) {
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
if (ifa->ifa_addr->sa_family != addr->sa_family)
continue;
if (equal(addr, ifa->ifa_addr))
return (ifa);
if ((ifp->if_flags & IFF_BROADCAST) && ifa->ifa_broadaddr &&
/* IP6 doesn't have broadcast */
ifa->ifa_broadaddr->sa_len != 0 &&
equal(ifa->ifa_broadaddr, addr))
return (ifa);
}
}
return (NULL);
}
/*
* Locate the point to point interface with a given destination address.
*/
/*ARGSUSED*/
struct ifaddr *
ifa_ifwithdstaddr(struct sockaddr *addr)
{
struct ifnet *ifp;
struct ifaddr *ifa;
TAILQ_FOREACH(ifp, &ifnet, if_list) {
if (ifp->if_flags & IFF_POINTOPOINT)
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
if (ifa->ifa_addr->sa_family != addr->sa_family ||
ifa->ifa_dstaddr == NULL)
continue;
if (equal(addr, ifa->ifa_dstaddr))
return (ifa);
}
}
return (NULL);
}
/*
* Find an interface on a specific network. If many, choice
* is most specific found.
*/
struct ifaddr *
ifa_ifwithnet(struct sockaddr *addr)
{
struct ifnet *ifp;
struct ifaddr *ifa;
struct ifaddr *ifa_maybe = 0;
u_int af = addr->sa_family;
char *addr_data = addr->sa_data, *cplim;
if (af == AF_LINK) {
struct sockaddr_dl *sdl = (struct sockaddr_dl *)addr;
if (sdl->sdl_index && sdl->sdl_index < if_indexlim &&
ifindex2ifnet[sdl->sdl_index])
return (ifnet_addrs[sdl->sdl_index]);
}
TAILQ_FOREACH(ifp, &ifnet, if_list) {
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
char *cp, *cp2, *cp3;
if (ifa->ifa_addr->sa_family != af ||
ifa->ifa_netmask == 0)
next: continue;
cp = addr_data;
cp2 = ifa->ifa_addr->sa_data;
cp3 = ifa->ifa_netmask->sa_data;
cplim = (char *)ifa->ifa_netmask +
ifa->ifa_netmask->sa_len;
while (cp3 < cplim)
if ((*cp++ ^ *cp2++) & *cp3++)
/* want to continue for() loop */
goto next;
if (ifa_maybe == 0 ||
rn_refines((caddr_t)ifa->ifa_netmask,
(caddr_t)ifa_maybe->ifa_netmask))
ifa_maybe = ifa;
}
}
return (ifa_maybe);
}
/*
* Find an interface using a specific address family
*/
struct ifaddr *
ifa_ifwithaf(int af)
{
struct ifnet *ifp;
struct ifaddr *ifa;
TAILQ_FOREACH(ifp, &ifnet, if_list) {
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
if (ifa->ifa_addr->sa_family == af)
return (ifa);
}
}
return (NULL);
}
/*
* Find an interface address specific to an interface best matching
* a given address.
*/
struct ifaddr *
ifaof_ifpforaddr(struct sockaddr *addr, struct ifnet *ifp)
{
struct ifaddr *ifa;
char *cp, *cp2, *cp3;
char *cplim;
struct ifaddr *ifa_maybe = NULL;
u_int af = addr->sa_family;
if (af >= AF_MAX)
return (NULL);
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
if (ifa->ifa_addr->sa_family != af)
continue;
if (ifa_maybe == NULL)
ifa_maybe = ifa;
if (ifa->ifa_netmask == 0 || ifp->if_flags & IFF_POINTOPOINT) {
if (equal(addr, ifa->ifa_addr) ||
(ifa->ifa_dstaddr && equal(addr, ifa->ifa_dstaddr)))
return (ifa);
continue;
}
cp = addr->sa_data;
cp2 = ifa->ifa_addr->sa_data;
cp3 = ifa->ifa_netmask->sa_data;
cplim = ifa->ifa_netmask->sa_len + (char *)ifa->ifa_netmask;
for (; cp3 < cplim; cp3++)
if ((*cp++ ^ *cp2++) & *cp3)
break;
if (cp3 == cplim)
return (ifa);
}
return (ifa_maybe);
}
/*
* Default action when installing a route with a Link Level gateway.
* Lookup an appropriate real ifa to point to.
* This should be moved to /sys/net/link.c eventually.
*/
void
link_rtrequest(int cmd, struct rtentry *rt, struct rt_addrinfo *info)
{
struct ifaddr *ifa;
struct sockaddr *dst;
struct ifnet *ifp;
if (cmd != RTM_ADD || ((ifa = rt->rt_ifa) == 0) ||
((ifp = ifa->ifa_ifp) == 0) || ((dst = rt_key(rt)) == 0))
return;
if ((ifa = ifaof_ifpforaddr(dst, ifp)) != NULL) {
ifa->ifa_refcnt++;
IFAFREE(rt->rt_ifa);
rt->rt_ifa = ifa;
if (ifa->ifa_rtrequest && ifa->ifa_rtrequest != link_rtrequest)
ifa->ifa_rtrequest(cmd, rt, info);
}
}
/*
* Mark an interface down and notify protocols of
* the transition.
* NOTE: must be called at splsoftnet or equivalent.
*/
void
if_down(struct ifnet *ifp)
{
struct ifaddr *ifa;
splassert(IPL_SOFTNET);
ifp->if_flags &= ~IFF_UP;
microtime(&ifp->if_lastchange);
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
pfctlinput(PRC_IFDOWN, ifa->ifa_addr);
}
IFQ_PURGE(&ifp->if_snd);
#if NCARP > 0
if (ifp->if_carp)
carp_carpdev_state(ifp);
#endif
#if NBRIDGE > 0
if (ifp->if_bridge)
bstp_ifstate(ifp);
#endif
rt_ifmsg(ifp);
}
/*
* Mark an interface up and notify protocols of
* the transition.
* NOTE: must be called at splsoftnet or equivalent.
*/
void
if_up(struct ifnet *ifp)
{
#ifdef notyet
struct ifaddr *ifa;
#endif
splassert(IPL_SOFTNET);
ifp->if_flags |= IFF_UP;
microtime(&ifp->if_lastchange);
#ifdef notyet
/* this has no effect on IP, and will kill all ISO connections XXX */
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
pfctlinput(PRC_IFUP, ifa->ifa_addr);
}
#endif
#if NCARP > 0
if (ifp->if_carp)
carp_carpdev_state(ifp);
#endif
#if NBRIDGE > 0
if (ifp->if_bridge)
bstp_ifstate(ifp);
#endif
rt_ifmsg(ifp);
#ifdef INET6
in6_if_up(ifp);
#endif
}
/*
* Process a link state change.
* NOTE: must be called at splsoftnet or equivalent.
*/
void
if_link_state_change(struct ifnet *ifp)
{
rt_ifmsg(ifp);
dohooks(ifp->if_linkstatehooks, 0);
}
/*
* Flush an interface queue.
*/
void
if_qflush(struct ifqueue *ifq)
{
struct mbuf *m, *n;
n = ifq->ifq_head;
while ((m = n) != NULL) {
n = m->m_act;
m_freem(m);
}
ifq->ifq_head = 0;
ifq->ifq_tail = 0;
ifq->ifq_len = 0;
}
/*
* Handle interface watchdog timer routines. Called
* from softclock, we decrement timers (if set) and
* call the appropriate interface routine on expiration.
*/
void
if_slowtimo(void *arg)
{
struct timeout *to = (struct timeout *)arg;
struct ifnet *ifp;
int s = splnet();
TAILQ_FOREACH(ifp, &ifnet, if_list) {
if (ifp->if_timer == 0 || --ifp->if_timer)
continue;
if (ifp->if_watchdog)
(*ifp->if_watchdog)(ifp);
}
splx(s);
timeout_add(to, hz / IFNET_SLOWHZ);
}
/*
* Map interface name to
* interface structure pointer.
*/
struct ifnet *
ifunit(const char *name)
{
struct ifnet *ifp;
TAILQ_FOREACH(ifp, &ifnet, if_list) {
if (strcmp(ifp->if_xname, name) == 0)
return (ifp);
}
return (NULL);
}
/*
* Interface ioctls.
*/
int
ifioctl(struct socket *so, u_long cmd, caddr_t data, struct proc *p)
{
struct ifnet *ifp;
struct ifreq *ifr;
struct ifaddr *ifa;
struct sockaddr_dl *sdl;
struct ifgroupreq *ifgr;
char ifdescrbuf[IFDESCRSIZE];
char ifrtlabelbuf[RTLABEL_LEN];
int error = 0;
size_t bytesdone;
short oif_flags;
const char *label;
switch (cmd) {
case SIOCGIFCONF:
case OSIOCGIFCONF:
return (ifconf(cmd, data));
}
ifr = (struct ifreq *)data;
switch (cmd) {
case SIOCIFCREATE:
case SIOCIFDESTROY:
if ((error = suser(p, 0)) != 0)
return (error);
return ((cmd == SIOCIFCREATE) ?
if_clone_create(ifr->ifr_name) :
if_clone_destroy(ifr->ifr_name));
case SIOCIFGCLONERS:
return (if_clone_list((struct if_clonereq *)data));
case SIOCGIFGMEMB:
return (if_getgroupmembers(data));
case SIOCGIFGATTR:
return (if_getgroupattribs(data));
case SIOCSIFGATTR:
if ((error = suser(p, 0)) != 0)
return (error);
return (if_setgroupattribs(data));
}
ifp = ifunit(ifr->ifr_name);
if (ifp == 0)
return (ENXIO);
oif_flags = ifp->if_flags;
switch (cmd) {
case SIOCGIFFLAGS:
ifr->ifr_flags = ifp->if_flags;
break;
case SIOCGIFMETRIC:
ifr->ifr_metric = ifp->if_metric;
break;
case SIOCGIFMTU:
ifr->ifr_mtu = ifp->if_mtu;
break;
case SIOCGIFDATA:
error = copyout((caddr_t)&ifp->if_data, ifr->ifr_data,
sizeof(ifp->if_data));
break;
case SIOCSIFFLAGS:
if ((error = suser(p, 0)) != 0)
return (error);
if (ifp->if_flags & IFF_UP && (ifr->ifr_flags & IFF_UP) == 0) {
int s = splnet();
if_down(ifp);
splx(s);
}
if (ifr->ifr_flags & IFF_UP && (ifp->if_flags & IFF_UP) == 0) {
int s = splnet();
if_up(ifp);
splx(s);
}
ifp->if_flags = (ifp->if_flags & IFF_CANTCHANGE) |
(ifr->ifr_flags &~ IFF_CANTCHANGE);
if (ifp->if_ioctl)
(void) (*ifp->if_ioctl)(ifp, cmd, data);
break;
case SIOCSIFMETRIC:
if ((error = suser(p, 0)) != 0)
return (error);
ifp->if_metric = ifr->ifr_metric;
break;
case SIOCSIFMTU:
{
#ifdef INET6
int oldmtu = ifp->if_mtu;
#endif
if ((error = suser(p, 0)) != 0)
return (error);
if (ifp->if_ioctl == NULL)
return (EOPNOTSUPP);
error = (*ifp->if_ioctl)(ifp, cmd, data);
/*
* If the link MTU changed, do network layer specific procedure.
*/
#ifdef INET6
if (ifp->if_mtu != oldmtu)
nd6_setmtu(ifp);
#endif
break;
}
case SIOCSIFPHYADDR:
case SIOCDIFPHYADDR:
#ifdef INET6
case SIOCSIFPHYADDR_IN6:
#endif
case SIOCSLIFPHYADDR:
case SIOCADDMULTI:
case SIOCDELMULTI:
case SIOCSIFMEDIA:
if ((error = suser(p, 0)) != 0)
return (error);
/* FALLTHROUGH */
case SIOCGIFPSRCADDR:
case SIOCGIFPDSTADDR:
case SIOCGLIFPHYADDR:
case SIOCGIFMEDIA:
if (ifp->if_ioctl == 0)
return (EOPNOTSUPP);
error = (*ifp->if_ioctl)(ifp, cmd, data);
break;
case SIOCGIFDESCR:
strlcpy(ifdescrbuf, ifp->if_description, IFDESCRSIZE);
error = copyoutstr(ifdescrbuf, ifr->ifr_data, IFDESCRSIZE,
&bytesdone);
break;
case SIOCSIFDESCR:
if ((error = suser(p, 0)) != 0)
return (error);
error = copyinstr(ifr->ifr_data, ifdescrbuf,
IFDESCRSIZE, &bytesdone);
if (error == 0) {
(void)memset(ifp->if_description, 0, IFDESCRSIZE);
strlcpy(ifp->if_description, ifdescrbuf, IFDESCRSIZE);
}
break;
case SIOCGIFRTLABEL:
label = rtlabel_id2name(ifp->if_rtlabelid);
strlcpy(ifrtlabelbuf, label, RTLABEL_LEN);
error = copyoutstr(ifrtlabelbuf, ifr->ifr_data, RTLABEL_LEN,
&bytesdone);
break;
case SIOCSIFRTLABEL:
if ((error = suser(p, 0)) != 0)
return (error);
error = copyinstr(ifr->ifr_data, ifrtlabelbuf,
RTLABEL_LEN, &bytesdone);
if (error == 0) {
rtlabel_unref(ifp->if_rtlabelid);
ifp->if_rtlabelid = rtlabel_name2id(ifrtlabelbuf);
}
break;
case SIOCAIFGROUP:
if ((error = suser(p, 0)))
return (error);
(*ifp->if_ioctl)(ifp, cmd, data); /* XXX error check */
ifgr = (struct ifgroupreq *)data;
if ((error = if_addgroup(ifp, ifgr->ifgr_group)))
return (error);
break;
case SIOCGIFGROUP:
if ((error = if_getgroup(data, ifp)))
return (error);
break;
case SIOCDIFGROUP:
if ((error = suser(p, 0)))
return (error);
(*ifp->if_ioctl)(ifp, cmd, data); /* XXX error check */
ifgr = (struct ifgroupreq *)data;
if ((error = if_delgroup(ifp, ifgr->ifgr_group)))
return (error);
break;
case SIOCSIFLLADDR:
if ((error = suser(p, 0)))
return (error);
ifa = ifnet_addrs[ifp->if_index];
if (ifa == NULL)
return (EINVAL);
sdl = (struct sockaddr_dl *)ifa->ifa_addr;
if (sdl == NULL)
return (EINVAL);
if (ifr->ifr_addr.sa_len != ETHER_ADDR_LEN)
return (EINVAL);
if (ETHER_IS_MULTICAST(ifr->ifr_addr.sa_data))
return (EINVAL);
switch (ifp->if_type) {
case IFT_ETHER:
case IFT_CARP:
case IFT_FDDI:
case IFT_XETHER:
case IFT_ISO88025:
case IFT_L2VLAN:
bcopy((caddr_t)ifr->ifr_addr.sa_data,
(caddr_t)((struct arpcom *)ifp)->ac_enaddr,
ETHER_ADDR_LEN);
bcopy((caddr_t)ifr->ifr_addr.sa_data,
LLADDR(sdl), ETHER_ADDR_LEN);
break;
default:
return (ENODEV);
}
if (ifp->if_flags & IFF_UP) {
struct ifreq ifrq;
int s = splnet();
ifp->if_flags &= ~IFF_UP;
ifrq.ifr_flags = ifp->if_flags;
(*ifp->if_ioctl)(ifp, SIOCSIFFLAGS, (caddr_t)&ifrq);
ifp->if_flags |= IFF_UP;
ifrq.ifr_flags = ifp->if_flags;
(*ifp->if_ioctl)(ifp, SIOCSIFFLAGS, (caddr_t)&ifrq);
splx(s);
TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) {
if (ifa->ifa_addr != NULL &&
ifa->ifa_addr->sa_family == AF_INET)
arp_ifinit((struct arpcom *)ifp, ifa);
}
}
break;
default:
if (so->so_proto == 0)
return (EOPNOTSUPP);
#if !defined(COMPAT_43) && !defined(COMPAT_LINUX) && !defined(COMPAT_SVR4)
error = ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL,
(struct mbuf *) cmd, (struct mbuf *) data,
(struct mbuf *) ifp));
#else
{
u_long ocmd = cmd;
switch (cmd) {
case SIOCSIFADDR:
case SIOCSIFDSTADDR:
case SIOCSIFBRDADDR:
case SIOCSIFNETMASK:
#if BYTE_ORDER != BIG_ENDIAN
if (ifr->ifr_addr.sa_family == 0 &&
ifr->ifr_addr.sa_len < 16) {
ifr->ifr_addr.sa_family = ifr->ifr_addr.sa_len;
ifr->ifr_addr.sa_len = 16;
}
#else
if (ifr->ifr_addr.sa_len == 0)
ifr->ifr_addr.sa_len = 16;
#endif
break;
case OSIOCGIFADDR:
cmd = SIOCGIFADDR;
break;
case OSIOCGIFDSTADDR:
cmd = SIOCGIFDSTADDR;
break;
case OSIOCGIFBRDADDR:
cmd = SIOCGIFBRDADDR;
break;
case OSIOCGIFNETMASK:
cmd = SIOCGIFNETMASK;
}
error = ((*so->so_proto->pr_usrreq)(so, PRU_CONTROL,
(struct mbuf *) cmd, (struct mbuf *) data,
(struct mbuf *) ifp));
switch (ocmd) {
case OSIOCGIFADDR:
case OSIOCGIFDSTADDR:
case OSIOCGIFBRDADDR:
case OSIOCGIFNETMASK:
*(u_int16_t *)&ifr->ifr_addr = ifr->ifr_addr.sa_family;
}
}
#endif
break;
}
if (((oif_flags ^ ifp->if_flags) & IFF_UP) != 0) {
microtime(&ifp->if_lastchange);
#ifdef INET6
if ((ifp->if_flags & IFF_UP) != 0) {
int s = splnet();
in6_if_up(ifp);
splx(s);
}
#endif
}
return (error);
}
/*
* Return interface configuration
* of system. List may be used
* in later ioctl's (above) to get
* other information.
*/
/*ARGSUSED*/
int
ifconf(u_long cmd, caddr_t data)
{
struct ifconf *ifc = (struct ifconf *)data;
struct ifnet *ifp;
struct ifaddr *ifa;
struct ifreq ifr, *ifrp;
int space = ifc->ifc_len, error = 0;
/* If ifc->ifc_len is 0, fill it in with the needed size and return. */
if (space == 0) {
TAILQ_FOREACH(ifp, &ifnet, if_list) {
struct sockaddr *sa;
if (TAILQ_EMPTY(&ifp->if_addrlist))
space += sizeof (ifr);
else
TAILQ_FOREACH(ifa,
&ifp->if_addrlist, ifa_list) {
sa = ifa->ifa_addr;
#if defined(COMPAT_43) || defined(COMPAT_LINUX) || defined(COMPAT_SVR4)
if (cmd != OSIOCGIFCONF)
#endif
if (sa->sa_len > sizeof(*sa))
space += sa->sa_len -
sizeof(*sa);
space += sizeof(ifr);
}
}
ifc->ifc_len = space;
return (0);
}
ifrp = ifc->ifc_req;
for (ifp = TAILQ_FIRST(&ifnet); space >= sizeof(ifr) &&
ifp != TAILQ_END(&ifnet); ifp = TAILQ_NEXT(ifp, if_list)) {
bcopy(ifp->if_xname, ifr.ifr_name, IFNAMSIZ);
if (TAILQ_EMPTY(&ifp->if_addrlist)) {
bzero((caddr_t)&ifr.ifr_addr, sizeof(ifr.ifr_addr));
error = copyout((caddr_t)&ifr, (caddr_t)ifrp,
sizeof(ifr));
if (error)
break;
space -= sizeof (ifr), ifrp++;
} else
for (ifa = TAILQ_FIRST(&ifp->if_addrlist);
space >= sizeof (ifr) &&
ifa != TAILQ_END(&ifp->if_addrlist);
ifa = TAILQ_NEXT(ifa, ifa_list)) {
struct sockaddr *sa = ifa->ifa_addr;
#if defined(COMPAT_43) || defined(COMPAT_LINUX) || defined(COMPAT_SVR4)
if (cmd == OSIOCGIFCONF) {
struct osockaddr *osa =
(struct osockaddr *)&ifr.ifr_addr;
ifr.ifr_addr = *sa;
osa->sa_family = sa->sa_family;
error = copyout((caddr_t)&ifr,
(caddr_t)ifrp, sizeof (ifr));
ifrp++;
} else
#endif
if (sa->sa_len <= sizeof(*sa)) {
ifr.ifr_addr = *sa;
error = copyout((caddr_t)&ifr,
(caddr_t)ifrp, sizeof (ifr));
ifrp++;
} else {
space -= sa->sa_len - sizeof(*sa);
if (space < sizeof (ifr))
break;
error = copyout((caddr_t)&ifr,
(caddr_t)ifrp,
sizeof(ifr.ifr_name));
if (error == 0)
error = copyout((caddr_t)sa,
(caddr_t)&ifrp->ifr_addr,
sa->sa_len);
ifrp = (struct ifreq *)(sa->sa_len +
(caddr_t)&ifrp->ifr_addr);
}
if (error)
break;
space -= sizeof (ifr);
}
}
ifc->ifc_len -= space;
return (error);
}
/*
* Dummy functions replaced in ifnet during detach (if protocols decide to
* fiddle with the if during detach.
*/
void
if_detached_start(struct ifnet *ifp)
{
struct mbuf *m;
while (1) {
IF_DEQUEUE(&ifp->if_snd, m);
if (m == NULL)
return;
m_freem(m);
}
}
int
if_detached_ioctl(struct ifnet *ifp, u_long a, caddr_t b)
{
return ENODEV;
}
int
if_detached_init(struct ifnet *ifp)
{
return (ENXIO);
}
void
if_detached_watchdog(struct ifnet *ifp)
{
/* nothing */
}
/*
* Create interface group without members
*/
struct ifg_group *
if_creategroup(const char *groupname)
{
struct ifg_group *ifg = NULL;
if ((ifg = (struct ifg_group *)malloc(sizeof(struct ifg_group),
M_TEMP, M_NOWAIT)) == NULL)
return (NULL);
strlcpy(ifg->ifg_group, groupname, sizeof(ifg->ifg_group));
ifg->ifg_refcnt = 0;
ifg->ifg_carp_demoted = 0;
TAILQ_INIT(&ifg->ifg_members);
#if NPF > 0
pfi_attach_ifgroup(ifg);
#endif
TAILQ_INSERT_TAIL(&ifg_head, ifg, ifg_next);
return (ifg);
}
/*
* Add a group to an interface
*/
int
if_addgroup(struct ifnet *ifp, const char *groupname)
{
struct ifg_list *ifgl;
struct ifg_group *ifg = NULL;
struct ifg_member *ifgm;
if (groupname[0] && groupname[strlen(groupname) - 1] >= '0' &&
groupname[strlen(groupname) - 1] <= '9')
return (EINVAL);
TAILQ_FOREACH(ifgl, &ifp->if_groups, ifgl_next)
if (!strcmp(ifgl->ifgl_group->ifg_group, groupname))
return (EEXIST);
if ((ifgl = (struct ifg_list *)malloc(sizeof(struct ifg_list), M_TEMP,
M_NOWAIT)) == NULL)
return (ENOMEM);
if ((ifgm = (struct ifg_member *)malloc(sizeof(struct ifg_member),
M_TEMP, M_NOWAIT)) == NULL) {
free(ifgl, M_TEMP);
return (ENOMEM);
}
TAILQ_FOREACH(ifg, &ifg_head, ifg_next)
if (!strcmp(ifg->ifg_group, groupname))
break;
if (ifg == NULL && (ifg = if_creategroup(groupname)) == NULL) {
free(ifgl, M_TEMP);
free(ifgm, M_TEMP);
return (ENOMEM);
}
ifg->ifg_refcnt++;
ifgl->ifgl_group = ifg;
ifgm->ifgm_ifp = ifp;
TAILQ_INSERT_TAIL(&ifg->ifg_members, ifgm, ifgm_next);
TAILQ_INSERT_TAIL(&ifp->if_groups, ifgl, ifgl_next);
#if NPF > 0
pfi_group_change(groupname);
#endif
return (0);
}
/*
* Remove a group from an interface
*/
int
if_delgroup(struct ifnet *ifp, const char *groupname)
{
struct ifg_list *ifgl;
struct ifg_member *ifgm;
TAILQ_FOREACH(ifgl, &ifp->if_groups, ifgl_next)
if (!strcmp(ifgl->ifgl_group->ifg_group, groupname))
break;
if (ifgl == NULL)
return (ENOENT);
TAILQ_REMOVE(&ifp->if_groups, ifgl, ifgl_next);
TAILQ_FOREACH(ifgm, &ifgl->ifgl_group->ifg_members, ifgm_next)
if (ifgm->ifgm_ifp == ifp)
break;
if (ifgm != NULL) {
TAILQ_REMOVE(&ifgl->ifgl_group->ifg_members, ifgm, ifgm_next);
free(ifgm, M_TEMP);
}
if (--ifgl->ifgl_group->ifg_refcnt == 0) {
TAILQ_REMOVE(&ifg_head, ifgl->ifgl_group, ifg_next);
#if NPF > 0
pfi_detach_ifgroup(ifgl->ifgl_group);
#endif
free(ifgl->ifgl_group, M_TEMP);
}
free(ifgl, M_TEMP);
#if NPF > 0
pfi_group_change(groupname);
#endif
return (0);
}
/*
* Stores all groups from an interface in memory pointed
* to by data
*/
int
if_getgroup(caddr_t data, struct ifnet *ifp)
{
int len, error;
struct ifg_list *ifgl;
struct ifg_req ifgrq, *ifgp;
struct ifgroupreq *ifgr = (struct ifgroupreq *)data;
if (ifgr->ifgr_len == 0) {
TAILQ_FOREACH(ifgl, &ifp->if_groups, ifgl_next)
ifgr->ifgr_len += sizeof(struct ifg_req);
return (0);
}
len = ifgr->ifgr_len;
ifgp = ifgr->ifgr_groups;
TAILQ_FOREACH(ifgl, &ifp->if_groups, ifgl_next) {
if (len < sizeof(ifgrq))
return (EINVAL);
bzero(&ifgrq, sizeof ifgrq);
strlcpy(ifgrq.ifgrq_group, ifgl->ifgl_group->ifg_group,
sizeof(ifgrq.ifgrq_group));
if ((error = copyout((caddr_t)&ifgrq, (caddr_t)ifgp,
sizeof(struct ifg_req))))
return (error);
len -= sizeof(ifgrq);
ifgp++;
}
return (0);
}
/*
* Stores all members of a group in memory pointed to by data
*/
int
if_getgroupmembers(caddr_t data)
{
struct ifgroupreq *ifgr = (struct ifgroupreq *)data;
struct ifg_group *ifg;
struct ifg_member *ifgm;
struct ifg_req ifgrq, *ifgp;
int len, error;
TAILQ_FOREACH(ifg, &ifg_head, ifg_next)
if (!strcmp(ifg->ifg_group, ifgr->ifgr_name))
break;
if (ifg == NULL)
return (ENOENT);
if (ifgr->ifgr_len == 0) {
TAILQ_FOREACH(ifgm, &ifg->ifg_members, ifgm_next)
ifgr->ifgr_len += sizeof(ifgrq);
return (0);
}
len = ifgr->ifgr_len;
ifgp = ifgr->ifgr_groups;
TAILQ_FOREACH(ifgm, &ifg->ifg_members, ifgm_next) {
if (len < sizeof(ifgrq))
return (EINVAL);
bzero(&ifgrq, sizeof ifgrq);
strlcpy(ifgrq.ifgrq_member, ifgm->ifgm_ifp->if_xname,
sizeof(ifgrq.ifgrq_member));
if ((error = copyout((caddr_t)&ifgrq, (caddr_t)ifgp,
sizeof(struct ifg_req))))
return (error);
len -= sizeof(ifgrq);
ifgp++;
}
return (0);
}
int
if_getgroupattribs(caddr_t data)
{
struct ifgroupreq *ifgr = (struct ifgroupreq *)data;
struct ifg_group *ifg;
TAILQ_FOREACH(ifg, &ifg_head, ifg_next)
if (!strcmp(ifg->ifg_group, ifgr->ifgr_name))
break;
if (ifg == NULL)
return (ENOENT);
ifgr->ifgr_attrib.ifg_carp_demoted = ifg->ifg_carp_demoted;
return (0);
}
int
if_setgroupattribs(caddr_t data)
{
struct ifgroupreq *ifgr = (struct ifgroupreq *)data;
struct ifg_group *ifg;
struct ifg_member *ifgm;
int demote;
TAILQ_FOREACH(ifg, &ifg_head, ifg_next)
if (!strcmp(ifg->ifg_group, ifgr->ifgr_name))
break;
if (ifg == NULL)
return (ENOENT);
demote = ifgr->ifgr_attrib.ifg_carp_demoted;
if (demote + ifg->ifg_carp_demoted > 0xff ||
demote + ifg->ifg_carp_demoted < 0)
return (ERANGE);
ifg->ifg_carp_demoted += demote;
TAILQ_FOREACH(ifgm, &ifg->ifg_members, ifgm_next)
if (ifgm->ifgm_ifp->if_ioctl)
ifgm->ifgm_ifp->if_ioctl(ifgm->ifgm_ifp,
SIOCSIFGATTR, data);
return (0);
}
void
if_group_routechange(struct sockaddr *dst, struct sockaddr *mask)
{
switch (dst->sa_family) {
case AF_INET:
if (satosin(dst)->sin_addr.s_addr == INADDR_ANY)
if_group_egress_build();
break;
#ifdef INET6
case AF_INET6:
if (IN6_ARE_ADDR_EQUAL(&(satosin6(dst))->sin6_addr,
&in6addr_any) &&
mask && IN6_ARE_ADDR_EQUAL(&(satosin6(mask))->sin6_addr,
&in6addr_any))
if_group_egress_build();
break;
#endif
}
}
int
if_group_egress_build(void)
{
struct ifg_group *ifg;
struct ifg_member *ifgm, *next;
struct sockaddr_in sa_in;
#ifdef INET6
struct sockaddr_in6 sa_in6;
#endif
struct radix_node *rn;
struct rtentry *rt;
TAILQ_FOREACH(ifg, &ifg_head, ifg_next)
if (!strcmp(ifg->ifg_group, IFG_EGRESS))
break;
if (ifg != NULL)
for (ifgm = TAILQ_FIRST(&ifg->ifg_members); ifgm; ifgm = next) {
next = TAILQ_NEXT(ifgm, ifgm_next);
if_delgroup(ifgm->ifgm_ifp, IFG_EGRESS);
}
bzero(&sa_in, sizeof(sa_in));
sa_in.sin_len = sizeof(sa_in);
sa_in.sin_family = AF_INET;
if ((rn = rt_lookup(sintosa(&sa_in), sintosa(&sa_in), 0)) != NULL) {
do {
rt = (struct rtentry *)rn;
if (rt->rt_ifp)
if_addgroup(rt->rt_ifp, IFG_EGRESS);
#ifndef SMALL_KERNEL
rn = rn_mpath_next(rn);
#else
rn = NULL;
#endif
} while (rn != NULL);
}
#ifdef INET6
bcopy(&sa6_any, &sa_in6, sizeof(sa_in6));
if ((rn = rt_lookup(sin6tosa(&sa_in6), sin6tosa(&sa_in6), 0)) != NULL) {
do {
rt = (struct rtentry *)rn;
if (rt->rt_ifp)
if_addgroup(rt->rt_ifp, IFG_EGRESS);
#ifndef SMALL_KERNEL
rn = rn_mpath_next(rn);
#else
rn = NULL;
#endif
} while (rn != NULL);
}
#endif
return (0);
}
/*
* Set/clear promiscuous mode on interface ifp based on the truth value
* of pswitch. The calls are reference counted so that only the first
* "on" request actually has an effect, as does the final "off" request.
* Results are undefined if the "off" and "on" requests are not matched.
*/
int
ifpromisc(struct ifnet *ifp, int pswitch)
{
struct ifreq ifr;
if (pswitch) {
/*
* If the device is not configured up, we cannot put it in
* promiscuous mode.
*/
if ((ifp->if_flags & IFF_UP) == 0)
return (ENETDOWN);
if (ifp->if_pcount++ != 0)
return (0);
ifp->if_flags |= IFF_PROMISC;
} else {
if (--ifp->if_pcount > 0)
return (0);
ifp->if_flags &= ~IFF_PROMISC;
/*
* If the device is not configured up, we should not need to
* turn off promiscuous mode (device should have turned it
* off when interface went down; and will look at IFF_PROMISC
* again next time interface comes up).
*/
if ((ifp->if_flags & IFF_UP) == 0)
return (0);
}
ifr.ifr_flags = ifp->if_flags;
return ((*ifp->if_ioctl)(ifp, SIOCSIFFLAGS, (caddr_t)&ifr));
}
int
sysctl_ifq(int *name, u_int namelen, void *oldp, size_t *oldlenp,
void *newp, size_t newlen, struct ifqueue *ifq)
{
/* All sysctl names at this level are terminal. */
if (namelen != 1)
return (ENOTDIR);
switch (name[0]) {
case IFQCTL_LEN:
return (sysctl_rdint(oldp, oldlenp, newp, ifq->ifq_len));
case IFQCTL_MAXLEN:
return (sysctl_int(oldp, oldlenp, newp, newlen,
&ifq->ifq_maxlen));
case IFQCTL_DROPS:
return (sysctl_rdint(oldp, oldlenp, newp, ifq->ifq_drops));
default:
return (EOPNOTSUPP);
}
/* NOTREACHED */
}
void
netrndintr(void)
{
add_net_randomness(0);
}