#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/protosw.h>
#include <sys/kernel.h>
#include <sys/sockio.h>
#include <sys/syslog.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/if_var.h>
#include <net/radix.h>
#include <net/route.h>
#ifdef __APPLE__
#include <net/dlil.h>
#include <sys/domain.h>
#endif
#if defined(INET) || defined(INET6)
#include <netinet/in.h>
#include <netinet/in_var.h>
#if INET6
#include <netinet6/in6_var.h>
#include <netinet6/in6_ifattach.h>
#endif
#endif
static int ifconf __P((u_long, caddr_t));
static void if_qflush __P((struct ifqueue *));
static void link_rtrequest __P((int, struct rtentry *, struct sockaddr *));
static struct if_clone *if_clone_lookup(const char *, int *);
static int if_clone_list(struct if_clonereq *);
MALLOC_DEFINE(M_IFADDR, "ifaddr", "interface address");
MALLOC_DEFINE(M_IFMADDR, "ether_multi", "link-level multicast address");
int ifqmaxlen = IFQ_MAXLEN;
struct ifnethead ifnet = TAILQ_HEAD_INITIALIZER(ifnet);
struct ifmultihead ifma_lostlist = LIST_HEAD_INITIALIZER(ifma_lostlist);
static int if_cloners_count;
LIST_HEAD(, if_clone) if_cloners = LIST_HEAD_INITIALIZER(if_cloners);
#if INET6
extern void nd6_setmtu __P((struct ifnet *));
#endif
#define M_CLONE M_IFADDR
int if_index;
struct ifaddr **ifnet_addrs;
struct ifnet **ifindex2ifnet;
#define INITIAL_IF_INDEXLIM 8
static int
if_next_index(void)
{
static int if_indexlim = 0;
static int if_list_growing = 0;
int new_index;
while (if_list_growing) {
(void)tsleep((caddr_t)&ifnet_addrs, PZERO, "if_next_index", 0);
}
new_index = ++if_index;
if (if_index > if_indexlim) {
unsigned n;
int new_if_indexlim;
caddr_t new_ifnet_addrs;
caddr_t new_ifindex2ifnet;
caddr_t old_ifnet_addrs;
if_list_growing = 1;
old_ifnet_addrs = (caddr_t)ifnet_addrs;
if (ifnet_addrs == NULL) {
new_if_indexlim = INITIAL_IF_INDEXLIM;
} else {
new_if_indexlim = if_indexlim << 1;
}
n = (2 * new_if_indexlim + 1) * sizeof(caddr_t);
new_ifnet_addrs = _MALLOC(n, M_IFADDR, M_WAITOK);
new_ifindex2ifnet = new_ifnet_addrs
+ new_if_indexlim * sizeof(caddr_t);
bzero(new_ifnet_addrs, n);
if (ifnet_addrs != NULL) {
bcopy((caddr_t)ifnet_addrs, new_ifnet_addrs,
if_indexlim * sizeof(caddr_t));
bcopy((caddr_t)ifindex2ifnet,
new_ifindex2ifnet,
(if_indexlim + 1) * sizeof(caddr_t));
}
ifnet_addrs = (struct ifaddr **)new_ifnet_addrs;
ifindex2ifnet = (struct ifnet **)new_ifindex2ifnet;
if_indexlim = new_if_indexlim;
if (old_ifnet_addrs != NULL) {
_FREE((caddr_t)old_ifnet_addrs, M_IFADDR);
}
if_list_growing = 0;
wakeup((caddr_t)&ifnet_addrs);
}
return (new_index);
}
void
old_if_attach(ifp)
struct ifnet *ifp;
{
unsigned socksize, ifasize;
int namelen, masklen;
char workbuf[64];
register struct sockaddr_dl *sdl;
register struct ifaddr *ifa;
if (ifp->if_snd.ifq_maxlen == 0)
ifp->if_snd.ifq_maxlen = ifqmaxlen;
TAILQ_INIT(&ifp->if_addrhead);
TAILQ_INIT(&ifp->if_prefixhead);
LIST_INIT(&ifp->if_multiaddrs);
getmicrotime(&ifp->if_lastchange);
if ((ifp->if_eflags & IFEF_REUSE) == 0 || ifp->if_index == 0) {
ifp->if_index = if_next_index();
ifindex2ifnet[ifp->if_index] = ifp;
namelen = snprintf(workbuf, sizeof(workbuf),
"%s%d", ifp->if_name, ifp->if_unit);
#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);
if (ifa) {
bzero((caddr_t)ifa, ifasize);
sdl = (struct sockaddr_dl *)(ifa + 1);
sdl->sdl_len = socksize;
sdl->sdl_family = AF_LINK;
bcopy(workbuf, sdl->sdl_data, namelen);
sdl->sdl_nlen = namelen;
sdl->sdl_index = ifp->if_index;
sdl->sdl_type = ifp->if_type;
ifnet_addrs[ifp->if_index - 1] = ifa;
ifa->ifa_ifp = ifp;
ifa->ifa_rtrequest = link_rtrequest;
ifa->ifa_addr = (struct sockaddr *)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;
}
} else {
ifa = ifnet_addrs[ifp->if_index - 1];
}
if (ifa != NULL) {
TAILQ_INSERT_HEAD(&ifp->if_addrhead, ifa, ifa_link);
}
TAILQ_INSERT_TAIL(&ifnet, ifp, if_link);
}
static int
if_clone_create(char *name, int len)
{
struct if_clone *ifc;
char *dp;
int wildcard, bytoff, bitoff;
int unit;
int err;
ifc = if_clone_lookup(name, &unit);
if (ifc == NULL)
return (EINVAL);
if (ifunit(name) != NULL)
return (EEXIST);
bytoff = bitoff = 0;
wildcard = (unit < 0);
if (wildcard) {
while ((bytoff < ifc->ifc_bmlen)
&& (ifc->ifc_units[bytoff] == 0xff))
bytoff++;
if (bytoff >= ifc->ifc_bmlen)
return (ENOSPC);
while ((ifc->ifc_units[bytoff] & (1 << bitoff)) != 0)
bitoff++;
unit = (bytoff << 3) + bitoff;
}
if (unit > ifc->ifc_maxunit)
return (ENXIO);
err = (*ifc->ifc_create)(ifc, unit);
if (err != 0)
return (err);
if (!wildcard) {
bytoff = unit >> 3;
bitoff = unit - (bytoff << 3);
}
KASSERT((ifc->ifc_units[bytoff] & (1 << bitoff)) == 0,
("%s: bit is already set", __func__));
ifc->ifc_units[bytoff] |= (1 << bitoff);
if (wildcard) {
for (dp = name; *dp != '\0'; dp++);
if (snprintf(dp, len - (dp-name), "%d", unit) >
len - (dp-name) - 1) {
panic("if_clone_create(): interface name too long");
}
}
return (0);
}
int
if_clone_destroy(const char *name)
{
struct if_clone *ifc;
struct ifnet *ifp;
int bytoff, bitoff;
int unit;
ifc = if_clone_lookup(name, &unit);
if (ifc == NULL)
return (EINVAL);
if (unit < ifc->ifc_minifs)
return (EINVAL);
ifp = ifunit(name);
if (ifp == NULL)
return (ENXIO);
if (ifc->ifc_destroy == NULL)
return (EOPNOTSUPP);
(*ifc->ifc_destroy)(ifp);
bytoff = unit >> 3;
bitoff = unit - (bytoff << 3);
KASSERT((ifc->ifc_units[bytoff] & (1 << bitoff)) != 0,
("%s: bit is already cleared", __func__));
ifc->ifc_units[bytoff] &= ~(1 << bitoff);
return (0);
}
static struct if_clone *
if_clone_lookup(const char *name, int *unitp)
{
struct if_clone *ifc;
const char *cp;
int i;
for (ifc = LIST_FIRST(&if_cloners); ifc != NULL;) {
for (cp = name, i = 0; i < ifc->ifc_namelen; i++, cp++) {
if (ifc->ifc_name[i] != *cp)
goto next_ifc;
}
goto found_name;
next_ifc:
ifc = LIST_NEXT(ifc, ifc_list);
}
return ((struct if_clone *)NULL);
found_name:
if (*cp == '\0') {
i = -1;
} else {
for (i = 0; *cp != '\0'; cp++) {
if (*cp < '0' || *cp > '9') {
return (NULL);
}
i = (i * 10) + (*cp - '0');
}
}
if (unitp != NULL)
*unitp = i;
return (ifc);
}
void
if_clone_attach(struct if_clone *ifc)
{
int bytoff, bitoff;
int err;
int len, maxclone;
int unit;
KASSERT(ifc->ifc_minifs - 1 <= ifc->ifc_maxunit,
("%s: %s requested more units then allowed (%d > %d)",
__func__, ifc->ifc_name, ifc->ifc_minifs,
ifc->ifc_maxunit + 1));
maxclone = ifc->ifc_maxunit + 1;
len = maxclone >> 3;
if ((len << 3) < maxclone)
len++;
ifc->ifc_units = _MALLOC(len, M_CLONE, M_WAITOK | M_ZERO);
bzero(ifc->ifc_units, len);
ifc->ifc_bmlen = len;
LIST_INSERT_HEAD(&if_cloners, ifc, ifc_list);
if_cloners_count++;
for (unit = 0; unit < ifc->ifc_minifs; unit++) {
err = (*ifc->ifc_create)(ifc, unit);
KASSERT(err == 0,
("%s: failed to create required interface %s%d",
__func__, ifc->ifc_name, unit));
bytoff = unit >> 3;
bitoff = unit - (bytoff << 3);
ifc->ifc_units[bytoff] |= (1 << bitoff);
}
}
void
if_clone_detach(struct if_clone *ifc)
{
LIST_REMOVE(ifc, ifc_list);
FREE(ifc->ifc_units, M_CLONE);
if_cloners_count--;
}
static 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) {
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) {
strncpy(outbuf, ifc->ifc_name, IFNAMSIZ - 1);
error = copyout(outbuf, dst, IFNAMSIZ);
if (error)
break;
}
return (error);
}
__private_extern__ int
ifa_foraddr(addr)
unsigned int addr;
{
register struct ifnet *ifp;
register struct ifaddr *ifa;
register unsigned int addr2;
for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_link.tqe_next)
for (ifa = ifp->if_addrhead.tqh_first; ifa;
ifa = ifa->ifa_link.tqe_next) {
if (ifa->ifa_addr->sa_family != AF_INET)
continue;
addr2 = IA_SIN(ifa)->sin_addr.s_addr;
if (addr == addr2)
return (1);
}
return (0);
}
struct ifaddr *
ifa_ifwithaddr(addr)
register struct sockaddr *addr;
{
register struct ifnet *ifp;
register struct ifaddr *ifa;
#define equal(a1, a2) \
(bcmp((caddr_t)(a1), (caddr_t)(a2), ((struct sockaddr *)(a1))->sa_len) == 0)
for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_link.tqe_next)
for (ifa = ifp->if_addrhead.tqh_first; ifa;
ifa = ifa->ifa_link.tqe_next) {
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 &&
ifa->ifa_broadaddr->sa_len != 0 &&
equal(ifa->ifa_broadaddr, addr))
return (ifa);
}
return ((struct ifaddr *)0);
}
struct ifaddr *
ifa_ifwithdstaddr(addr)
register struct sockaddr *addr;
{
register struct ifnet *ifp;
register struct ifaddr *ifa;
for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_link.tqe_next)
if (ifp->if_flags & IFF_POINTOPOINT)
for (ifa = ifp->if_addrhead.tqh_first; ifa;
ifa = ifa->ifa_link.tqe_next) {
if (ifa->ifa_addr->sa_family != addr->sa_family)
continue;
if (ifa->ifa_dstaddr && equal(addr, ifa->ifa_dstaddr))
return (ifa);
}
return ((struct ifaddr *)0);
}
struct ifaddr *
ifa_ifwithnet(addr)
struct sockaddr *addr;
{
register struct ifnet *ifp;
register struct ifaddr *ifa;
struct ifaddr *ifa_maybe = (struct ifaddr *) 0;
u_int af = addr->sa_family;
char *addr_data = addr->sa_data, *cplim;
if (af == AF_LINK) {
register struct sockaddr_dl *sdl = (struct sockaddr_dl *)addr;
if (sdl->sdl_index && sdl->sdl_index <= if_index)
return (ifnet_addrs[sdl->sdl_index - 1]);
}
for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_link.tqe_next) {
for (ifa = ifp->if_addrhead.tqh_first; ifa;
ifa = ifa->ifa_link.tqe_next) {
register char *cp, *cp2, *cp3;
if (ifa->ifa_addr->sa_family != af)
next: continue;
#ifndef __APPLE__
if (
#if INET6
addr->sa_family != AF_INET6 &&
#endif
ifp->if_flags & IFF_POINTOPOINT) {
if (ifa->ifa_dstaddr != 0
&& equal(addr, ifa->ifa_dstaddr))
return (ifa);
} else
#endif
{
if (ifa->ifa_claim_addr) {
if ((*ifa->ifa_claim_addr)(ifa, addr)) {
return (ifa);
} else {
continue;
}
}
if (ifa->ifa_netmask == 0)
continue;
cp = addr_data;
cp2 = ifa->ifa_addr->sa_data;
cp3 = ifa->ifa_netmask->sa_data;
cplim = ifa->ifa_netmask->sa_len
+ (char *)ifa->ifa_netmask;
while (cp3 < cplim)
if ((*cp++ ^ *cp2++) & *cp3++)
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);
}
struct ifaddr *
ifaof_ifpforaddr(addr, ifp)
struct sockaddr *addr;
register struct ifnet *ifp;
{
register struct ifaddr *ifa;
register char *cp, *cp2, *cp3;
register char *cplim;
struct ifaddr *ifa_maybe = 0;
u_int af = addr->sa_family;
if (af >= AF_MAX)
return (0);
for (ifa = ifp->if_addrhead.tqh_first; ifa;
ifa = ifa->ifa_link.tqe_next) {
if (ifa->ifa_addr->sa_family != af)
continue;
if (ifa_maybe == 0)
ifa_maybe = ifa;
if (ifa->ifa_netmask == 0) {
if (equal(addr, ifa->ifa_addr) ||
(ifa->ifa_dstaddr && equal(addr, ifa->ifa_dstaddr)))
return (ifa);
continue;
}
if (ifp->if_flags & IFF_POINTOPOINT) {
if (equal(addr, ifa->ifa_dstaddr))
return (ifa);
} else {
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);
}
#include <net/route.h>
static void
link_rtrequest(cmd, rt, sa)
int cmd;
register struct rtentry *rt;
struct sockaddr *sa;
{
register 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;
ifa = ifaof_ifpforaddr(dst, ifp);
if (ifa) {
rtsetifa(rt, ifa);
if (ifa->ifa_rtrequest && ifa->ifa_rtrequest != link_rtrequest)
ifa->ifa_rtrequest(cmd, rt, sa);
}
}
void
if_unroute(ifp, flag, fam)
register struct ifnet *ifp;
int flag, fam;
{
register struct ifaddr *ifa;
ifp->if_flags &= ~flag;
getmicrotime(&ifp->if_lastchange);
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link)
if (fam == PF_UNSPEC || (fam == ifa->ifa_addr->sa_family))
pfctlinput(PRC_IFDOWN, ifa->ifa_addr);
if_qflush(&ifp->if_snd);
rt_ifmsg(ifp);
}
void
if_route(ifp, flag, fam)
register struct ifnet *ifp;
int flag, fam;
{
register struct ifaddr *ifa;
ifp->if_flags |= flag;
getmicrotime(&ifp->if_lastchange);
TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link)
if (fam == PF_UNSPEC || (fam == ifa->ifa_addr->sa_family))
pfctlinput(PRC_IFUP, ifa->ifa_addr);
rt_ifmsg(ifp);
}
void
if_down(ifp)
register struct ifnet *ifp;
{
if_unroute(ifp, IFF_UP, AF_UNSPEC);
}
void
if_up(ifp)
register struct ifnet *ifp;
{
if_route(ifp, IFF_UP, AF_UNSPEC);
}
static void
if_qflush(ifq)
register struct ifqueue *ifq;
{
register struct mbuf *m, *n;
n = ifq->ifq_head;
while ((m = n) != 0) {
n = m->m_act;
m_freem(m);
}
ifq->ifq_head = 0;
ifq->ifq_tail = 0;
ifq->ifq_len = 0;
}
struct ifnet *
ifunit(const char *name)
{
char namebuf[IFNAMSIZ + 1];
const char *cp;
struct ifnet *ifp;
int unit;
unsigned len, m;
char c;
len = strlen(name);
if (len < 2 || len > IFNAMSIZ)
return NULL;
cp = name + len - 1;
c = *cp;
if (c < '0' || c > '9')
return NULL;
unit = 0;
m = 1;
do {
if (cp == name)
return NULL;
unit += (c - '0') * m;
if (unit > 1000000)
return NULL;
m *= 10;
c = *--cp;
} while (c >= '0' && c <= '9');
len = cp - name + 1;
bcopy(name, namebuf, len);
namebuf[len] = '\0';
for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_link.tqe_next) {
if (strcmp(ifp->if_name, namebuf))
continue;
if (unit == ifp->if_unit)
break;
}
return (ifp);
}
struct ifnet *
if_withname(sa)
struct sockaddr *sa;
{
char ifname[IFNAMSIZ+1];
struct sockaddr_dl *sdl = (struct sockaddr_dl *)sa;
if ( (sa->sa_family != AF_LINK) || (sdl->sdl_nlen == 0) ||
(sdl->sdl_nlen > IFNAMSIZ) )
return NULL;
bcopy(sdl->sdl_data, ifname, sdl->sdl_nlen);
ifname[sdl->sdl_nlen] = '\0';
return ifunit(ifname);
}
int
ifioctl(so, cmd, data, p)
struct socket *so;
u_long cmd;
caddr_t data;
struct proc *p;
{
register struct ifnet *ifp;
register struct ifreq *ifr;
struct ifstat *ifs;
int error = 0;
short oif_flags;
struct kev_msg ev_msg;
struct net_event_data ev_data;
switch (cmd) {
case SIOCGIFCONF:
case OSIOCGIFCONF:
return (ifconf(cmd, data));
}
ifr = (struct ifreq *)data;
switch (cmd) {
case SIOCIFCREATE:
case SIOCIFDESTROY:
error = suser(p->p_ucred, &p->p_acflag);
if (error)
return (error);
return ((cmd == SIOCIFCREATE) ?
if_clone_create(ifr->ifr_name, sizeof(ifr->ifr_name)) :
if_clone_destroy(ifr->ifr_name));
#if 0
case SIOCIFGCLONERS:
return (if_clone_list((struct if_clonereq *)data));
#endif 0
}
ifp = ifunit(ifr->ifr_name);
if (ifp == 0)
return (ENXIO);
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 SIOCGIFPHYS:
ifr->ifr_phys = ifp->if_physical;
break;
case SIOCSIFFLAGS:
error = suser(p->p_ucred, &p->p_acflag);
if (error)
return (error);
#ifndef __APPLE__
if (ifp->if_flags & IFF_SMART) {
} else
#endif
if (ifp->if_flags & IFF_UP &&
(ifr->ifr_flags & IFF_UP) == 0) {
int s = splimp();
if_down(ifp);
splx(s);
} else if (ifr->ifr_flags & IFF_UP &&
(ifp->if_flags & IFF_UP) == 0) {
int s = splimp();
if_up(ifp);
splx(s);
}
ifp->if_flags = (ifp->if_flags & IFF_CANTCHANGE) |
(ifr->ifr_flags &~ IFF_CANTCHANGE);
error = dlil_ioctl(so->so_proto->pr_domain->dom_family,
ifp, cmd, (caddr_t) data);
if (error == 0) {
ev_msg.vendor_code = KEV_VENDOR_APPLE;
ev_msg.kev_class = KEV_NETWORK_CLASS;
ev_msg.kev_subclass = KEV_DL_SUBCLASS;
ev_msg.event_code = KEV_DL_SIFFLAGS;
strncpy(&ev_data.if_name[0], ifp->if_name, IFNAMSIZ);
ev_data.if_family = ifp->if_family;
ev_data.if_unit = (unsigned long) ifp->if_unit;
ev_msg.dv[0].data_length = sizeof(struct net_event_data);
ev_msg.dv[0].data_ptr = &ev_data;
ev_msg.dv[1].data_length = 0;
kev_post_msg(&ev_msg);
}
getmicrotime(&ifp->if_lastchange);
break;
case SIOCSIFMETRIC:
error = suser(p->p_ucred, &p->p_acflag);
if (error)
return (error);
ifp->if_metric = ifr->ifr_metric;
ev_msg.vendor_code = KEV_VENDOR_APPLE;
ev_msg.kev_class = KEV_NETWORK_CLASS;
ev_msg.kev_subclass = KEV_DL_SUBCLASS;
ev_msg.event_code = KEV_DL_SIFMETRICS;
strncpy(&ev_data.if_name[0], ifp->if_name, IFNAMSIZ);
ev_data.if_family = ifp->if_family;
ev_data.if_unit = (unsigned long) ifp->if_unit;
ev_msg.dv[0].data_length = sizeof(struct net_event_data);
ev_msg.dv[0].data_ptr = &ev_data;
ev_msg.dv[1].data_length = 0;
kev_post_msg(&ev_msg);
getmicrotime(&ifp->if_lastchange);
break;
case SIOCSIFPHYS:
error = suser(p->p_ucred, &p->p_acflag);
if (error)
return error;
error = dlil_ioctl(so->so_proto->pr_domain->dom_family,
ifp, cmd, (caddr_t) data);
if (error == 0) {
ev_msg.vendor_code = KEV_VENDOR_APPLE;
ev_msg.kev_class = KEV_NETWORK_CLASS;
ev_msg.kev_subclass = KEV_DL_SUBCLASS;
ev_msg.event_code = KEV_DL_SIFPHYS;
strncpy(&ev_data.if_name[0], ifp->if_name, IFNAMSIZ);
ev_data.if_family = ifp->if_family;
ev_data.if_unit = (unsigned long) ifp->if_unit;
ev_msg.dv[0].data_length = sizeof(struct net_event_data);
ev_msg.dv[0].data_ptr = &ev_data;
ev_msg.dv[1].data_length = 0;
kev_post_msg(&ev_msg);
getmicrotime(&ifp->if_lastchange);
}
return(error);
case SIOCSIFMTU:
{
u_long oldmtu = ifp->if_mtu;
error = suser(p->p_ucred, &p->p_acflag);
if (error)
return (error);
if (ifp->if_ioctl == NULL)
return (EOPNOTSUPP);
if (ifr->ifr_mtu < IF_MINMTU || ifr->ifr_mtu > IF_MAXMTU)
return (EINVAL);
error = dlil_ioctl(so->so_proto->pr_domain->dom_family,
ifp, cmd, (caddr_t) data);
if (error == 0) {
ev_msg.vendor_code = KEV_VENDOR_APPLE;
ev_msg.kev_class = KEV_NETWORK_CLASS;
ev_msg.kev_subclass = KEV_DL_SUBCLASS;
ev_msg.event_code = KEV_DL_SIFMTU;
strncpy(&ev_data.if_name[0], ifp->if_name, IFNAMSIZ);
ev_data.if_family = ifp->if_family;
ev_data.if_unit = (unsigned long) ifp->if_unit;
ev_msg.dv[0].data_length = sizeof(struct net_event_data);
ev_msg.dv[0].data_ptr = &ev_data;
ev_msg.dv[1].data_length = 0;
kev_post_msg(&ev_msg);
getmicrotime(&ifp->if_lastchange);
rt_ifmsg(ifp);
}
if (ifp->if_mtu != oldmtu) {
#if INET6
nd6_setmtu(ifp);
#endif
}
return (error);
}
case SIOCADDMULTI:
case SIOCDELMULTI:
error = suser(p->p_ucred, &p->p_acflag);
if (error)
return (error);
if ((ifp->if_flags & IFF_MULTICAST) == 0)
return EOPNOTSUPP;
#ifndef __APPLE__
if (ifr->ifr_addr.sa_family != AF_LINK)
return EINVAL;
#endif
if (cmd == SIOCADDMULTI) {
struct ifmultiaddr *ifma;
error = if_addmulti(ifp, &ifr->ifr_addr, &ifma);
ev_msg.event_code = KEV_DL_ADDMULTI;
} else {
error = if_delmulti(ifp, &ifr->ifr_addr);
ev_msg.event_code = KEV_DL_DELMULTI;
}
if (error == 0) {
ev_msg.vendor_code = KEV_VENDOR_APPLE;
ev_msg.kev_class = KEV_NETWORK_CLASS;
ev_msg.kev_subclass = KEV_DL_SUBCLASS;
strncpy(&ev_data.if_name[0], ifp->if_name, IFNAMSIZ);
ev_data.if_family = ifp->if_family;
ev_data.if_unit = (unsigned long) ifp->if_unit;
ev_msg.dv[0].data_length = sizeof(struct net_event_data);
ev_msg.dv[0].data_ptr = &ev_data;
ev_msg.dv[1].data_length = 0;
kev_post_msg(&ev_msg);
getmicrotime(&ifp->if_lastchange);
}
return error;
case SIOCSETVLAN:
if (ifp->if_type != IFT_L2VLAN) {
return (EOPNOTSUPP);
}
case SIOCSIFPHYADDR:
case SIOCDIFPHYADDR:
#ifdef INET6
case SIOCSIFPHYADDR_IN6:
#endif
case SIOCSLIFPHYADDR:
case SIOCSIFMEDIA:
case SIOCSIFGENERIC:
case SIOCSIFLLADDR:
error = suser(p->p_ucred, &p->p_acflag);
if (error)
return (error);
error = dlil_ioctl(so->so_proto->pr_domain->dom_family,
ifp, cmd, (caddr_t) data);
if (error == 0)
getmicrotime(&ifp->if_lastchange);
return error;
case SIOCGIFSTATUS:
ifs = (struct ifstat *)data;
ifs->ascii[0] = '\0';
case SIOCGIFPSRCADDR:
case SIOCGIFPDSTADDR:
case SIOCGLIFPHYADDR:
case SIOCGIFMEDIA:
case SIOCGIFGENERIC:
return dlil_ioctl(so->so_proto->pr_domain->dom_family,
ifp, cmd, (caddr_t) data);
case SIOCGETVLAN:
if (ifp->if_type != IFT_L2VLAN) {
return (EOPNOTSUPP);
}
return dlil_ioctl(so->so_proto->pr_domain->dom_family,
ifp, cmd, (caddr_t) data);
default:
oif_flags = ifp->if_flags;
if (so->so_proto == 0)
return (EOPNOTSUPP);
#if !COMPAT_43
return ((*so->so_proto->pr_usrreqs->pru_control)(so, cmd,
data,
ifp, p));
#else
{
int ocmd = cmd;
switch (cmd) {
case SIOCSIFDSTADDR:
case SIOCSIFADDR:
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_usrreqs->pru_control)(so,
cmd,
data,
ifp, p));
switch (ocmd) {
case OSIOCGIFADDR:
case OSIOCGIFDSTADDR:
case OSIOCGIFBRDADDR:
case OSIOCGIFNETMASK:
*(u_short *)&ifr->ifr_addr = ifr->ifr_addr.sa_family;
}
}
#endif
if (error == EOPNOTSUPP)
error = dlil_ioctl(so->so_proto->pr_domain->dom_family,
ifp, cmd, (caddr_t) data);
return (error);
}
return (0);
}
int
ifpromisc(ifp, pswitch)
struct ifnet *ifp;
int pswitch;
{
struct ifreq ifr;
int error;
int oldflags;
oldflags = ifp->if_flags;
if (pswitch) {
if ((ifp->if_flags & IFF_UP) == 0)
return (ENETDOWN);
if (ifp->if_pcount++ != 0)
return (0);
ifp->if_flags |= IFF_PROMISC;
log(LOG_INFO, "%s%d: promiscuous mode enabled\n",
ifp->if_name, ifp->if_unit);
} else {
if (--ifp->if_pcount > 0)
return (0);
ifp->if_flags &= ~IFF_PROMISC;
log(LOG_INFO, "%s%d: promiscuous mode disabled\n",
ifp->if_name, ifp->if_unit);
}
ifr.ifr_flags = ifp->if_flags;
error = dlil_ioctl(0, ifp, SIOCSIFFLAGS, (caddr_t)&ifr);
if (error == 0)
rt_ifmsg(ifp);
else
ifp->if_flags = oldflags;
return error;
}
static int
ifconf(cmd, data)
u_long cmd;
caddr_t data;
{
register struct ifconf *ifc = (struct ifconf *)data;
register struct ifnet *ifp = ifnet.tqh_first;
register struct ifaddr *ifa;
struct ifreq ifr, *ifrp;
int space = ifc->ifc_len, error = 0;
ifrp = ifc->ifc_req;
for (; space > sizeof (ifr) && ifp; ifp = ifp->if_link.tqe_next) {
char workbuf[64];
int ifnlen, addrs;
ifnlen = snprintf(workbuf, sizeof(workbuf),
"%s%d", ifp->if_name, ifp->if_unit);
if(ifnlen + 1 > sizeof ifr.ifr_name) {
error = ENAMETOOLONG;
break;
} else {
strcpy(ifr.ifr_name, workbuf);
}
addrs = 0;
ifa = ifp->if_addrhead.tqh_first;
for ( ; space > sizeof (ifr) && ifa;
ifa = ifa->ifa_link.tqe_next) {
register struct sockaddr *sa = ifa->ifa_addr;
#ifndef __APPLE__
if (curproc->p_prison && prison_if(curproc, sa))
continue;
#endif
addrs++;
#ifdef COMPAT_43
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 {
if (space < sizeof (ifr) + sa->sa_len -
sizeof(*sa))
break;
space -= sa->sa_len - sizeof(*sa);
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);
}
if (error)
break;
if (!addrs) {
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++;
}
}
ifc->ifc_len -= space;
return (error);
}
int
if_allmulti(ifp, onswitch)
struct ifnet *ifp;
int onswitch;
{
int error = 0;
int s = splimp();
if (onswitch) {
if (ifp->if_amcount++ == 0) {
ifp->if_flags |= IFF_ALLMULTI;
error = dlil_ioctl(0, ifp, SIOCSIFFLAGS, (caddr_t) 0);
}
} else {
if (ifp->if_amcount > 1) {
ifp->if_amcount--;
} else {
ifp->if_amcount = 0;
ifp->if_flags &= ~IFF_ALLMULTI;
error = dlil_ioctl(0, ifp, SIOCSIFFLAGS, (caddr_t) 0);
}
}
splx(s);
if (error == 0)
rt_ifmsg(ifp);
return error;
}
int
if_addmulti(ifp, sa, retifma)
struct ifnet *ifp;
struct sockaddr *sa;
struct ifmultiaddr **retifma;
{
struct sockaddr *llsa = 0;
struct sockaddr *dupsa;
int error, s;
struct ifmultiaddr *ifma;
struct rslvmulti_req rsreq;
for (ifma = ifp->if_multiaddrs.lh_first; ifma;
ifma = ifma->ifma_link.le_next) {
if (equal(sa, ifma->ifma_addr)) {
ifma->ifma_refcount++;
if (retifma)
*retifma = ifma;
return 0;
}
}
rsreq.sa = sa;
rsreq.llsa = &llsa;
error = dlil_ioctl(sa->sa_family, ifp, SIOCRSLVMULTI, (caddr_t) &rsreq);
if (error == EOPNOTSUPP)
error = 0;
if (error)
return error;
MALLOC(ifma, struct ifmultiaddr *, sizeof *ifma, M_IFMADDR, M_WAITOK);
MALLOC(dupsa, struct sockaddr *, sa->sa_len, M_IFMADDR, M_WAITOK);
bcopy(sa, dupsa, sa->sa_len);
ifma->ifma_addr = dupsa;
ifma->ifma_lladdr = llsa;
ifma->ifma_ifp = ifp;
ifma->ifma_refcount = 1;
ifma->ifma_protospec = 0;
rt_newmaddrmsg(RTM_NEWMADDR, ifma);
s = splimp();
LIST_INSERT_HEAD(&ifp->if_multiaddrs, ifma, ifma_link);
splx(s);
if (retifma)
*retifma = ifma;
if (llsa != 0) {
for (ifma = ifp->if_multiaddrs.lh_first; ifma;
ifma = ifma->ifma_link.le_next) {
if (equal(ifma->ifma_addr, llsa))
break;
}
if (ifma) {
ifma->ifma_refcount++;
} else {
MALLOC(ifma, struct ifmultiaddr *, sizeof *ifma,
M_IFMADDR, M_WAITOK);
MALLOC(dupsa, struct sockaddr *, llsa->sa_len,
M_IFMADDR, M_WAITOK);
bcopy(llsa, dupsa, llsa->sa_len);
ifma->ifma_addr = dupsa;
ifma->ifma_lladdr = 0;
ifma->ifma_ifp = ifp;
ifma->ifma_refcount = 1;
s = splimp();
LIST_INSERT_HEAD(&ifp->if_multiaddrs, ifma, ifma_link);
splx(s);
}
}
s = splimp();
dlil_ioctl(0, ifp, SIOCADDMULTI, (caddr_t) 0);
splx(s);
return 0;
}
int
if_delmultiaddr(struct ifmultiaddr *ifma)
{
struct sockaddr *sa;
struct ifnet *ifp;
{
struct ifmultiaddr *match = NULL;
for (ifp = ifnet.tqh_first; ifp; ifp = ifp->if_link.tqe_next) {
for (match = ifp->if_multiaddrs.lh_first; match; match = match->ifma_link.le_next) {
if (match->ifma_ifp != ifp) {
printf("if_delmultiaddr: ifma (%x) on ifp i(%s) is stale\n",
match, if_name(ifp));
return (0) ;
}
if (match == ifma)
break;
}
if (match == ifma)
break;
}
if (match != ifma) {
for (match = ifma_lostlist.lh_first; match; match = match->ifma_link.le_next) {
if (match->ifma_ifp != NULL) {
printf("if_delmultiaddr: item on lost list (%x) contains non-null ifp=%s\n",
match, if_name(match->ifma_ifp));
return (0) ;
}
if (match == ifma)
break;
}
}
if (match != ifma) {
printf("if_delmultiaddr: ifma 0x%X is invalid\n", ifma);
return 0;
}
}
if (ifma->ifma_refcount > 1) {
ifma->ifma_refcount--;
return 0;
}
sa = ifma->ifma_lladdr;
if (sa)
rt_newmaddrmsg(RTM_DELMADDR, ifma);
ifp = ifma->ifma_ifp;
LIST_REMOVE(ifma, ifma_link);
if (ifp && ifma->ifma_addr->sa_family == AF_LINK && sa == 0)
dlil_ioctl(0, ifp, SIOCDELMULTI, 0);
FREE(ifma->ifma_addr, M_IFMADDR);
FREE(ifma, M_IFMADDR);
if (sa == 0)
return 0;
if (ifp)
ifma = ifp->if_multiaddrs.lh_first;
else
ifma = ifma_lostlist.lh_first;
for (; ifma; ifma = ifma->ifma_link.le_next)
if (equal(sa, ifma->ifma_addr))
break;
FREE(sa, M_IFMADDR);
if (ifma == 0) {
return 0;
}
return if_delmultiaddr(ifma);
}
int
if_delmulti(ifp, sa)
struct ifnet *ifp;
struct sockaddr *sa;
{
struct ifmultiaddr *ifma;
for (ifma = ifp->if_multiaddrs.lh_first; ifma;
ifma = ifma->ifma_link.le_next)
if (equal(sa, ifma->ifma_addr))
break;
if (ifma == 0)
return ENOENT;
return if_delmultiaddr(ifma);
}
#ifndef __APPLE__
int
if_setlladdr(struct ifnet *ifp, const u_char *lladdr, int len)
{
...
}
#endif
struct ifmultiaddr *
ifmaof_ifpforaddr(sa, ifp)
struct sockaddr *sa;
struct ifnet *ifp;
{
struct ifmultiaddr *ifma;
for (ifma = ifp->if_multiaddrs.lh_first; ifma;
ifma = ifma->ifma_link.le_next)
if (equal(ifma->ifma_addr, sa))
break;
return ifma;
}
SYSCTL_NODE(_net, PF_LINK, link, CTLFLAG_RW, 0, "Link layers");
SYSCTL_NODE(_net_link, 0, generic, CTLFLAG_RW, 0, "Generic link-management");
int if_down_all(void)
{
struct ifnet *ifp;
int s;
s = splnet();
TAILQ_FOREACH(ifp, &ifnet, if_link)
if_down(ifp);
splx(s);
return(0);
}
static int
if_rtdel(rn, arg)
struct radix_node *rn;
void *arg;
{
struct rtentry *rt = (struct rtentry *)rn;
struct ifnet *ifp = arg;
int err;
if (rt != NULL && rt->rt_ifp == ifp) {
if ((rt->rt_flags & RTF_UP) == 0)
return (0);
err = rtrequest(RTM_DELETE, rt_key(rt), rt->rt_gateway,
rt_mask(rt), rt->rt_flags,
(struct rtentry **) NULL);
if (err) {
log(LOG_WARNING, "if_rtdel: error %d\n", err);
}
}
return (0);
}
void if_rtproto_del(struct ifnet *ifp, int protocol)
{
struct radix_node_head *rnh;
if ((protocol <= AF_MAX) && ((rnh = rt_tables[protocol]) != NULL) && (ifp != NULL))
(void) rnh->rnh_walktree(rnh, if_rtdel, ifp);
}