#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/proc.h>
#include <sys/malloc.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/domain.h>
#include <sys/protosw.h>
#include <sys/syslog.h>
#include <sys/mcache.h>
#include <kern/lock.h>
#include <net/if.h>
#include <net/route.h>
#include <net/dlil.h>
#include <net/raw_cb.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/in_arp.h>
#include <netinet6/nd6.h>
#include <machine/spl.h>
extern struct rtstat rtstat;
extern int check_routeselfref;
extern struct domain routedomain;
MALLOC_DEFINE(M_RTABLE, "routetbl", "routing tables");
static struct sockaddr route_dst = { 2, PF_ROUTE, { 0, } };
static struct sockaddr route_src = { 2, PF_ROUTE, { 0, } };
static struct sockaddr sa_zero = { sizeof(sa_zero), AF_INET, { 0, } };
struct walkarg {
int w_tmemsize;
int w_op, w_arg;
caddr_t w_tmem;
struct sysctl_req *w_req;
};
static struct mbuf *rt_msg1(int, struct rt_addrinfo *);
static int rt_msg2(int, struct rt_addrinfo *, caddr_t, struct walkarg *);
static int rt_xaddrs(caddr_t, caddr_t, struct rt_addrinfo *);
static int sysctl_dumpentry(struct radix_node *rn, void *vw);
static int sysctl_dumpentry_ext(struct radix_node *rn, void *vw);
static int sysctl_iflist(int af, struct walkarg *w);
static int sysctl_iflist2(int af, struct walkarg *w);
static int route_output(struct mbuf *, struct socket *);
static void rt_setmetrics(u_int32_t, struct rt_metrics *, struct rtentry *);
static void rt_getmetrics(struct rtentry *, struct rt_metrics *);
static void rt_setif(struct rtentry *, struct sockaddr *, struct sockaddr *,
struct sockaddr *, unsigned int);
static void rt_drainall(void);
#define SIN(sa) ((struct sockaddr_in *)(size_t)(sa))
SYSCTL_NODE(_net, OID_AUTO, idle, CTLFLAG_RW, 0, "idle network monitoring");
static struct timeval last_ts;
SYSCTL_NODE(_net_idle, OID_AUTO, route, CTLFLAG_RW, 0, "idle route monitoring");
static int rt_if_idle_drain_interval = RT_IF_IDLE_DRAIN_INTERVAL;
SYSCTL_INT(_net_idle_route, OID_AUTO, drain_interval, CTLFLAG_RW,
&rt_if_idle_drain_interval, 0, "Default interval for draining "
"routes when doing interface idle reference counting.");
#define CALCULATE_CLOCKSKEW(cc, ic, cu, iu)\
((cc.tv_sec - ic) - (cu - iu))
static int
rts_abort(struct socket *so)
{
int error;
error = raw_usrreqs.pru_abort(so);
return error;
}
static int
rts_attach(struct socket *so, int proto, __unused struct proc *p)
{
struct rawcb *rp;
int error;
if (sotorawcb(so) != 0)
return EISCONN;
MALLOC(rp, struct rawcb *, sizeof *rp, M_PCB, M_WAITOK);
if (rp == 0)
return ENOBUFS;
bzero(rp, sizeof *rp);
so->so_pcb = (caddr_t)rp;
error = raw_attach(so, proto);
rp = sotorawcb(so);
if (error) {
FREE(rp, M_PCB);
so->so_pcb = NULL;
so->so_flags |= SOF_PCBCLEARING;
return error;
}
switch(rp->rcb_proto.sp_protocol) {
case AF_INET:
route_cb.ip_count++;
break;
case AF_INET6:
route_cb.ip6_count++;
break;
case AF_IPX:
route_cb.ipx_count++;
break;
case AF_NS:
route_cb.ns_count++;
break;
}
rp->rcb_faddr = &route_src;
route_cb.any_count++;
soisconnected(so);
so->so_options |= SO_USELOOPBACK;
return 0;
}
static int
rts_bind(struct socket *so, struct sockaddr *nam, struct proc *p)
{
int error;
error = raw_usrreqs.pru_bind(so, nam, p);
return error;
}
static int
rts_connect(struct socket *so, struct sockaddr *nam, struct proc *p)
{
int error;
error = raw_usrreqs.pru_connect(so, nam, p);
return error;
}
static int
rts_detach(struct socket *so)
{
struct rawcb *rp = sotorawcb(so);
int error;
if (rp != 0) {
switch(rp->rcb_proto.sp_protocol) {
case AF_INET:
route_cb.ip_count--;
break;
case AF_INET6:
route_cb.ip6_count--;
break;
case AF_IPX:
route_cb.ipx_count--;
break;
case AF_NS:
route_cb.ns_count--;
break;
}
route_cb.any_count--;
}
error = raw_usrreqs.pru_detach(so);
return error;
}
static int
rts_disconnect(struct socket *so)
{
int error;
error = raw_usrreqs.pru_disconnect(so);
return error;
}
static int
rts_peeraddr(struct socket *so, struct sockaddr **nam)
{
int error;
error = raw_usrreqs.pru_peeraddr(so, nam);
return error;
}
static int
rts_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
struct mbuf *control, struct proc *p)
{
int error;
error = raw_usrreqs.pru_send(so, flags, m, nam, control, p);
return error;
}
static int
rts_shutdown(struct socket *so)
{
int error;
error = raw_usrreqs.pru_shutdown(so);
return error;
}
static int
rts_sockaddr(struct socket *so, struct sockaddr **nam)
{
int error;
error = raw_usrreqs.pru_sockaddr(so, nam);
return error;
}
static struct pr_usrreqs route_usrreqs = {
rts_abort, pru_accept_notsupp, rts_attach, rts_bind,
rts_connect, pru_connect2_notsupp, pru_control_notsupp,
rts_detach, rts_disconnect, pru_listen_notsupp, rts_peeraddr,
pru_rcvd_notsupp, pru_rcvoob_notsupp, rts_send, pru_sense_null,
rts_shutdown, rts_sockaddr, sosend, soreceive, pru_sopoll_notsupp
};
static int
route_output(struct mbuf *m, struct socket *so)
{
struct rt_msghdr *rtm = NULL;
struct rtentry *rt = NULL;
struct rtentry *saved_nrt = NULL;
struct radix_node_head *rnh;
struct rt_addrinfo info;
int len, error = 0;
sa_family_t dst_sa_family = 0;
struct ifnet *ifp = NULL;
#ifndef __APPLE__
struct proc *curproc = current_proc();
#endif
struct sockaddr_in dst_in, gate_in;
int sendonlytoself = 0;
unsigned int ifscope = IFSCOPE_NONE;
#define senderr(e) { error = e; goto flush;}
if (m == NULL ||
((m->m_len < sizeof(intptr_t)) && (m = m_pullup(m, sizeof(intptr_t))) == 0))
return (ENOBUFS);
if ((m->m_flags & M_PKTHDR) == 0)
panic("route_output");
socket_unlock(so, 0);
lck_mtx_lock(rnh_lock);
len = m->m_pkthdr.len;
if (len < sizeof(*rtm) ||
len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
info.rti_info[RTAX_DST] = NULL;
senderr(EINVAL);
}
R_Malloc(rtm, struct rt_msghdr *, len);
if (rtm == NULL) {
info.rti_info[RTAX_DST] = NULL;
senderr(ENOBUFS);
}
m_copydata(m, 0, len, (caddr_t)rtm);
if (rtm->rtm_version != RTM_VERSION) {
info.rti_info[RTAX_DST] = NULL;
senderr(EPROTONOSUPPORT);
}
if (rtm->rtm_type == RTM_GET_SILENT) {
if ((so->so_options & SO_USELOOPBACK) == 0)
senderr(EINVAL);
sendonlytoself = 1;
rtm->rtm_type = RTM_GET;
}
if (rtm->rtm_type != RTM_GET && (so->so_state & SS_PRIV) == 0) {
info.rti_info[RTAX_DST] = NULL;
senderr(EPERM);
}
rtm->rtm_pid = proc_selfpid();
info.rti_addrs = rtm->rtm_addrs;
if (rt_xaddrs((caddr_t)(rtm + 1), len + (caddr_t)rtm, &info)) {
info.rti_info[RTAX_DST] = NULL;
senderr(EINVAL);
}
if (info.rti_info[RTAX_DST] == NULL || (info.rti_info[RTAX_DST]->sa_family >= AF_MAX) ||
(info.rti_info[RTAX_GATEWAY] != NULL && (info.rti_info[RTAX_GATEWAY]->sa_family >= AF_MAX))) {
senderr(EINVAL);
}
if (info.rti_info[RTAX_DST]->sa_family == AF_INET && info.rti_info[RTAX_DST]->sa_len != sizeof (dst_in)) {
if (info.rti_info[RTAX_DST]->sa_len < offsetof(struct sockaddr_in, sin_zero))
senderr(EINVAL);
bzero(&dst_in, sizeof (dst_in));
dst_in.sin_len = sizeof (dst_in);
dst_in.sin_family = AF_INET;
dst_in.sin_port = SIN(info.rti_info[RTAX_DST])->sin_port;
dst_in.sin_addr = SIN(info.rti_info[RTAX_DST])->sin_addr;
info.rti_info[RTAX_DST] = (struct sockaddr *)&dst_in;
dst_sa_family = info.rti_info[RTAX_DST]->sa_family;
}
if (info.rti_info[RTAX_GATEWAY] != NULL &&
info.rti_info[RTAX_GATEWAY]->sa_family == AF_INET && info.rti_info[RTAX_GATEWAY]->sa_len != sizeof (gate_in)) {
if (info.rti_info[RTAX_GATEWAY]->sa_len < offsetof(struct sockaddr_in, sin_zero))
senderr(EINVAL);
bzero(&gate_in, sizeof (gate_in));
gate_in.sin_len = sizeof (gate_in);
gate_in.sin_family = AF_INET;
gate_in.sin_port = SIN(info.rti_info[RTAX_GATEWAY])->sin_port;
gate_in.sin_addr = SIN(info.rti_info[RTAX_GATEWAY])->sin_addr;
info.rti_info[RTAX_GATEWAY] = (struct sockaddr *)&gate_in;
}
if (info.rti_info[RTAX_GENMASK]) {
struct radix_node *t;
t = rn_addmask((caddr_t)info.rti_info[RTAX_GENMASK], 0, 1);
if (t && Bcmp(info.rti_info[RTAX_GENMASK], t->rn_key, *(u_char *)info.rti_info[RTAX_GENMASK]) == 0)
info.rti_info[RTAX_GENMASK] = (struct sockaddr *)(t->rn_key);
else
senderr(ENOBUFS);
}
if (rtm->rtm_flags & RTF_IFSCOPE) {
if (info.rti_info[RTAX_DST]->sa_family != AF_INET && info.rti_info[RTAX_DST]->sa_family != AF_INET6)
senderr(EINVAL);
ifscope = rtm->rtm_index;
}
if (info.rti_info[RTAX_DST]->sa_family == AF_INET)
sin_set_ifscope(info.rti_info[RTAX_DST], IFSCOPE_NONE);
if (info.rti_info[RTAX_GATEWAY] != NULL && info.rti_info[RTAX_GATEWAY]->sa_family == AF_INET)
sin_set_ifscope(info.rti_info[RTAX_GATEWAY], IFSCOPE_NONE);
switch (rtm->rtm_type) {
case RTM_ADD:
if (info.rti_info[RTAX_GATEWAY] == NULL)
senderr(EINVAL);
#ifdef __APPLE__
{
#define satosinaddr(sa) (((struct sockaddr_in *)sa)->sin_addr.s_addr)
if (check_routeselfref && (info.rti_info[RTAX_DST] && info.rti_info[RTAX_DST]->sa_family == AF_INET) &&
(info.rti_info[RTAX_NETMASK] && satosinaddr(info.rti_info[RTAX_NETMASK]) == INADDR_BROADCAST) &&
(info.rti_info[RTAX_GATEWAY] && satosinaddr(info.rti_info[RTAX_DST]) == satosinaddr(info.rti_info[RTAX_GATEWAY]))) {
log(LOG_WARNING, "route_output: circular route %ld.%ld.%ld.%ld/32 ignored\n",
(ntohl(satosinaddr(info.rti_info[RTAX_GATEWAY])>>24))&0xff,
(ntohl(satosinaddr(info.rti_info[RTAX_GATEWAY])>>16))&0xff,
(ntohl(satosinaddr(info.rti_info[RTAX_GATEWAY])>>8))&0xff,
(ntohl(satosinaddr(info.rti_info[RTAX_GATEWAY])))&0xff);
senderr(EINVAL);
}
}
#endif
error = rtrequest_scoped_locked(RTM_ADD, info.rti_info[RTAX_DST], info.rti_info[RTAX_GATEWAY],
info.rti_info[RTAX_NETMASK], rtm->rtm_flags, &saved_nrt, ifscope);
if (error == 0 && saved_nrt) {
RT_LOCK(saved_nrt);
#ifdef __APPLE__
rt_setif(saved_nrt, info.rti_info[RTAX_IFP], info.rti_info[RTAX_IFA], info.rti_info[RTAX_GATEWAY],
ifscope);
#endif
rt_setmetrics(rtm->rtm_inits,
&rtm->rtm_rmx, saved_nrt);
saved_nrt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
saved_nrt->rt_rmx.rmx_locks |=
(rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
saved_nrt->rt_genmask = info.rti_info[RTAX_GENMASK];
RT_REMREF_LOCKED(saved_nrt);
RT_UNLOCK(saved_nrt);
}
break;
case RTM_DELETE:
error = rtrequest_scoped_locked(RTM_DELETE, info.rti_info[RTAX_DST],
info.rti_info[RTAX_GATEWAY], info.rti_info[RTAX_NETMASK], rtm->rtm_flags, &saved_nrt, ifscope);
if (error == 0) {
rt = saved_nrt;
RT_LOCK(rt);
goto report;
}
break;
case RTM_GET:
case RTM_CHANGE:
case RTM_LOCK:
if ((rnh = rt_tables[info.rti_info[RTAX_DST]->sa_family]) == NULL)
senderr(EAFNOSUPPORT);
rt = rt_lookup(TRUE, info.rti_info[RTAX_DST], info.rti_info[RTAX_NETMASK], rnh, ifscope);
if (rt == NULL)
senderr(ESRCH);
RT_LOCK(rt);
switch(rtm->rtm_type) {
case RTM_GET: {
struct ifaddr *ifa2;
report:
ifa2 = NULL;
RT_LOCK_ASSERT_HELD(rt);
info.rti_info[RTAX_DST] = rt_key(rt);
dst_sa_family = info.rti_info[RTAX_DST]->sa_family;
info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
info.rti_info[RTAX_NETMASK] = rt_mask(rt);
info.rti_info[RTAX_GENMASK] = rt->rt_genmask;
if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) {
ifp = rt->rt_ifp;
if (ifp) {
ifnet_lock_shared(ifp);
ifa2 = ifp->if_lladdr;
info.rti_info[RTAX_IFP] = ifa2->ifa_addr;
IFA_ADDREF(ifa2);
ifnet_lock_done(ifp);
info.rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr;
rtm->rtm_index = ifp->if_index;
} else {
info.rti_info[RTAX_IFP] = NULL;
info.rti_info[RTAX_IFA] = NULL;
}
} else if ((ifp = rt->rt_ifp) != NULL) {
rtm->rtm_index = ifp->if_index;
}
if (ifa2 != NULL)
IFA_LOCK(ifa2);
len = rt_msg2(rtm->rtm_type, &info, (caddr_t)0,
(struct walkarg *)0);
if (ifa2 != NULL)
IFA_UNLOCK(ifa2);
if (len > rtm->rtm_msglen) {
struct rt_msghdr *new_rtm;
R_Malloc(new_rtm, struct rt_msghdr *, len);
if (new_rtm == 0) {
RT_UNLOCK(rt);
if (ifa2 != NULL)
IFA_REMREF(ifa2);
senderr(ENOBUFS);
}
Bcopy(rtm, new_rtm, rtm->rtm_msglen);
R_Free(rtm); rtm = new_rtm;
}
if (ifa2 != NULL)
IFA_LOCK(ifa2);
(void)rt_msg2(rtm->rtm_type, &info, (caddr_t)rtm,
(struct walkarg *)0);
if (ifa2 != NULL)
IFA_UNLOCK(ifa2);
rtm->rtm_flags = rt->rt_flags;
rt_getmetrics(rt, &rtm->rtm_rmx);
rtm->rtm_addrs = info.rti_addrs;
if (ifa2 != NULL)
IFA_REMREF(ifa2);
}
break;
case RTM_CHANGE:
if (info.rti_info[RTAX_GATEWAY] && (error = rt_setgate(rt,
rt_key(rt), info.rti_info[RTAX_GATEWAY]))) {
RT_UNLOCK(rt);
senderr(error);
}
if ((rt->rt_flags & RTF_GATEWAY) && !info.rti_info[RTAX_GATEWAY])
info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
#ifdef __APPLE__
rt_setif(rt, info.rti_info[RTAX_IFP], info.rti_info[RTAX_IFA], info.rti_info[RTAX_GATEWAY],
ifscope);
#endif
rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
rt);
#ifndef __APPLE__
if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, info.rti_info[RTAX_GATEWAY]);
#endif
if (info.rti_info[RTAX_GENMASK])
rt->rt_genmask = info.rti_info[RTAX_GENMASK];
case RTM_LOCK:
rt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
rt->rt_rmx.rmx_locks |=
(rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
break;
}
RT_UNLOCK(rt);
break;
default:
senderr(EOPNOTSUPP);
}
flush:
if (rtm) {
if (error)
rtm->rtm_errno = error;
else
rtm->rtm_flags |= RTF_DONE;
}
if (rt != NULL) {
RT_LOCK_ASSERT_NOTHELD(rt);
rtfree_locked(rt);
}
lck_mtx_unlock(rnh_lock);
socket_lock(so, 0);
{
struct rawcb *rp = 0;
if ((so->so_options & SO_USELOOPBACK) == 0) {
if (route_cb.any_count <= 1) {
if (rtm)
R_Free(rtm);
m_freem(m);
return (error);
}
rp = sotorawcb(so);
}
if (rtm) {
m_copyback(m, 0, rtm->rtm_msglen, (caddr_t)rtm);
if (m->m_pkthdr.len < rtm->rtm_msglen) {
m_freem(m);
m = NULL;
} else if (m->m_pkthdr.len > rtm->rtm_msglen)
m_adj(m, rtm->rtm_msglen - m->m_pkthdr.len);
R_Free(rtm);
}
if (sendonlytoself && m) {
error = 0;
if (sbappendaddr(&so->so_rcv, &route_src, m, (struct mbuf*)0, &error) != 0) {
sorwakeup(so);
}
if (error)
return error;
} else {
struct sockproto route_proto = {PF_ROUTE, 0};
if (rp)
rp->rcb_proto.sp_family = 0;
if (dst_sa_family != 0)
route_proto.sp_protocol = dst_sa_family;
if (m) {
socket_unlock(so, 0);
raw_input(m, &route_proto, &route_src, &route_dst);
socket_lock(so, 0);
}
if (rp)
rp->rcb_proto.sp_family = PF_ROUTE;
}
}
return (error);
}
void
rt_setexpire(struct rtentry *rt, uint64_t expiry)
{
rt->rt_expire = expiry;
if (expiry) {
rt->rt_rmx.rmx_expire = expiry + rt->base_calendartime -
rt->base_uptime;
} else
rt->rt_rmx.rmx_expire = 0;
}
static void
rt_setmetrics(u_int32_t which, struct rt_metrics *in, struct rtentry *out)
{
struct timeval curr_calendar_time;
uint64_t curr_uptime;
getmicrotime(&curr_calendar_time);
curr_uptime = net_uptime();
#define metric(f, e) if (which & (f)) out->rt_rmx.e = in->e;
metric(RTV_RPIPE, rmx_recvpipe);
metric(RTV_SPIPE, rmx_sendpipe);
metric(RTV_SSTHRESH, rmx_ssthresh);
metric(RTV_RTT, rmx_rtt);
metric(RTV_RTTVAR, rmx_rttvar);
metric(RTV_HOPCOUNT, rmx_hopcount);
metric(RTV_MTU, rmx_mtu);
metric(RTV_EXPIRE, rmx_expire);
#undef metric
if (out->rt_rmx.rmx_expire > 0) {
curr_uptime = net_uptime();
getmicrotime(&curr_calendar_time);
out->base_calendartime +=
CALCULATE_CLOCKSKEW(curr_calendar_time,
out->base_calendartime,
curr_uptime, out->base_uptime);
rt_setexpire(out,
out->rt_rmx.rmx_expire -
out->base_calendartime +
out->base_uptime);
} else {
rt_setexpire(out, 0);
}
VERIFY(out->rt_expire == 0 || out->rt_rmx.rmx_expire != 0);
VERIFY(out->rt_expire != 0 || out->rt_rmx.rmx_expire == 0);
}
static void
rt_getmetrics(struct rtentry *in, struct rt_metrics *out)
{
struct timeval curr_calendar_time;
uint64_t curr_uptime;
VERIFY(in->rt_expire == 0 || in->rt_rmx.rmx_expire != 0);
VERIFY(in->rt_expire != 0 || in->rt_rmx.rmx_expire == 0);
*out = in->rt_rmx;
if (in->rt_expire) {
getmicrotime(&curr_calendar_time);
curr_uptime = net_uptime();
in->base_calendartime +=
CALCULATE_CLOCKSKEW(curr_calendar_time,
in->base_calendartime,
curr_uptime, in->base_uptime);
out->rmx_expire = in->base_calendartime +
in->rt_expire - in->base_uptime;
} else
out->rmx_expire = 0;
}
static void
rt_setif(struct rtentry *rt, struct sockaddr *Ifpaddr, struct sockaddr *Ifaaddr,
struct sockaddr *Gate, unsigned int ifscope)
{
struct ifaddr *ifa = NULL;
struct ifnet *ifp = NULL;
void (*ifa_rtrequest)
(int, struct rtentry *, struct sockaddr *);
lck_mtx_assert(rnh_lock, LCK_MTX_ASSERT_OWNED);
RT_LOCK_ASSERT_HELD(rt);
if (use_routegenid)
routegenid_update();
if (rt->rt_flags & RTF_CONDEMNED)
return;
RT_ADDREF_LOCKED(rt);
RT_CONVERT_LOCK(rt);
if (Ifpaddr && (ifa = ifa_ifwithnet_scoped(Ifpaddr, ifscope)) &&
(ifp = ifa->ifa_ifp) && (Ifaaddr || Gate)) {
IFA_REMREF(ifa);
ifa = ifaof_ifpforaddr(Ifaaddr ? Ifaaddr : Gate, ifp);
} else {
if (ifa) {
IFA_REMREF(ifa);
ifa = 0;
}
if (Ifpaddr && (ifp = if_withname(Ifpaddr)) ) {
if (Gate) {
ifa = ifaof_ifpforaddr(Gate, ifp);
} else {
ifnet_lock_shared(ifp);
ifa = TAILQ_FIRST(&ifp->if_addrhead);
if (ifa != NULL)
IFA_ADDREF(ifa);
ifnet_lock_done(ifp);
}
} else if (Ifaaddr &&
(ifa = ifa_ifwithaddr_scoped(Ifaaddr, ifscope))) {
ifp = ifa->ifa_ifp;
} else if (Gate != NULL) {
RT_UNLOCK(rt);
if ((ifa = ifa_ifwithroute_scoped_locked(rt->rt_flags,
rt_key(rt), Gate, ifscope)) != NULL)
ifp = ifa->ifa_ifp;
RT_LOCK(rt);
if (rt->rt_flags & RTF_CONDEMNED) {
if (ifa != NULL)
IFA_REMREF(ifa);
RT_REMREF_LOCKED(rt);
return;
}
}
}
if (ifa) {
struct ifaddr *oifa = rt->rt_ifa;
if (oifa != ifa) {
if (oifa != NULL) {
IFA_LOCK_SPIN(oifa);
ifa_rtrequest = oifa->ifa_rtrequest;
IFA_UNLOCK(oifa);
if (ifa_rtrequest != NULL)
ifa_rtrequest(RTM_DELETE, rt, Gate);
}
rtsetifa(rt, ifa);
if (rt->rt_ifp != ifp) {
if (rt->rt_llinfo_purge != NULL)
rt->rt_llinfo_purge(rt);
if (rt->rt_if_ref_fn != NULL) {
rt->rt_if_ref_fn(ifp, 1);
rt->rt_if_ref_fn(rt->rt_ifp, -1);
}
}
rt->rt_ifp = ifp;
if (rt_primary_default(rt, rt_key(rt))) {
set_primary_ifscope(rt_key(rt)->sa_family,
rt->rt_ifp->if_index);
}
rt->rt_rmx.rmx_mtu = ifp->if_mtu;
if (rt->rt_ifa != NULL) {
IFA_LOCK_SPIN(rt->rt_ifa);
ifa_rtrequest = rt->rt_ifa->ifa_rtrequest;
IFA_UNLOCK(rt->rt_ifa);
if (ifa_rtrequest != NULL)
ifa_rtrequest(RTM_ADD, rt, Gate);
}
IFA_REMREF(ifa);
RT_REMREF_LOCKED(rt);
return;
}
IFA_REMREF(ifa);
}
if (rt->rt_ifa != NULL) {
IFA_LOCK_SPIN(rt->rt_ifa);
ifa_rtrequest = rt->rt_ifa->ifa_rtrequest;
IFA_UNLOCK(rt->rt_ifa);
if (ifa_rtrequest != NULL)
ifa_rtrequest(RTM_ADD, rt, Gate);
}
RT_REMREF_LOCKED(rt);
}
#define ROUNDUP32(a) \
((a) > 0 ? (1 + (((a) - 1) | (sizeof(uint32_t) - 1))) : sizeof(uint32_t))
#define ADVANCE32(x, n) (x += ROUNDUP32((n)->sa_len))
static int
rt_xaddrs(caddr_t cp, caddr_t cplim, struct rt_addrinfo *rtinfo)
{
struct sockaddr *sa;
int i;
bzero(rtinfo->rti_info, sizeof(rtinfo->rti_info));
for (i = 0; (i < RTAX_MAX) && (cp < cplim); i++) {
if ((rtinfo->rti_addrs & (1 << i)) == 0)
continue;
sa = (struct sockaddr *)cp;
if ( (cp + sa->sa_len) > cplim ) {
return (EINVAL);
}
if (sa->sa_len == 0) {
rtinfo->rti_info[i] = &sa_zero;
return (0);
}
rtinfo->rti_info[i] = sa;
ADVANCE32(cp, sa);
}
return (0);
}
static struct mbuf *
rt_msg1(int type, struct rt_addrinfo *rtinfo)
{
struct rt_msghdr *rtm;
struct mbuf *m;
int i;
int len, dlen;
switch (type) {
case RTM_DELADDR:
case RTM_NEWADDR:
len = sizeof(struct ifa_msghdr);
break;
case RTM_DELMADDR:
case RTM_NEWMADDR:
len = sizeof(struct ifma_msghdr);
break;
case RTM_IFINFO:
len = sizeof(struct if_msghdr);
break;
default:
len = sizeof(struct rt_msghdr);
}
if (len > MCLBYTES)
panic("rt_msg1");
m = m_gethdr(M_DONTWAIT, MT_DATA);
if (m && len > MHLEN) {
MCLGET(m, M_DONTWAIT);
if ((m->m_flags & M_EXT) == 0) {
m_free(m);
m = NULL;
}
}
if (m == 0)
return (m);
m->m_pkthdr.len = m->m_len = len;
m->m_pkthdr.rcvif = 0;
rtm = mtod(m, struct rt_msghdr *);
bzero((caddr_t)rtm, len);
for (i = 0; i < RTAX_MAX; i++) {
struct sockaddr *sa, *hint;
struct sockaddr_storage ss;
if ((sa = rtinfo->rti_info[i]) == NULL)
continue;
switch (i) {
case RTAX_DST:
case RTAX_NETMASK:
if ((hint = rtinfo->rti_info[RTAX_DST]) == NULL)
hint = rtinfo->rti_info[RTAX_IFA];
sa = rtm_scrub_ifscope(type, i, hint, sa, &ss);
break;
default:
break;
}
rtinfo->rti_addrs |= (1 << i);
dlen = ROUNDUP32(sa->sa_len);
m_copyback(m, len, dlen, (caddr_t)sa);
len += dlen;
}
if (m->m_pkthdr.len != len) {
m_freem(m);
return (NULL);
}
rtm->rtm_msglen = len;
rtm->rtm_version = RTM_VERSION;
rtm->rtm_type = type;
return (m);
}
static int
rt_msg2(int type, struct rt_addrinfo *rtinfo, caddr_t cp, struct walkarg *w)
{
int i;
int len, dlen, second_time = 0;
caddr_t cp0;
rtinfo->rti_addrs = 0;
again:
switch (type) {
case RTM_DELADDR:
case RTM_NEWADDR:
len = sizeof(struct ifa_msghdr);
break;
case RTM_DELMADDR:
case RTM_NEWMADDR:
len = sizeof(struct ifma_msghdr);
break;
case RTM_IFINFO:
len = sizeof(struct if_msghdr);
break;
case RTM_IFINFO2:
len = sizeof(struct if_msghdr2);
break;
case RTM_NEWMADDR2:
len = sizeof(struct ifma_msghdr2);
break;
case RTM_GET_EXT:
len = sizeof (struct rt_msghdr_ext);
break;
case RTM_GET2:
len = sizeof(struct rt_msghdr2);
break;
default:
len = sizeof(struct rt_msghdr);
}
cp0 = cp;
if (cp0)
cp += len;
for (i = 0; i < RTAX_MAX; i++) {
struct sockaddr *sa, *hint;
struct sockaddr_storage ss;
if ((sa = rtinfo->rti_info[i]) == 0)
continue;
switch (i) {
case RTAX_DST:
case RTAX_NETMASK:
if ((hint = rtinfo->rti_info[RTAX_DST]) == NULL)
hint = rtinfo->rti_info[RTAX_IFA];
sa = rtm_scrub_ifscope(type, i, hint, sa, &ss);
break;
default:
break;
}
rtinfo->rti_addrs |= (1 << i);
dlen = ROUNDUP32(sa->sa_len);
if (cp) {
bcopy((caddr_t)sa, cp, (unsigned)dlen);
cp += dlen;
}
len += dlen;
}
if (cp == 0 && w != NULL && !second_time) {
struct walkarg *rw = w;
if (rw->w_req) {
if (rw->w_tmemsize < len) {
if (rw->w_tmem)
FREE(rw->w_tmem, M_RTABLE);
rw->w_tmem = (caddr_t)
_MALLOC(len, M_RTABLE, M_WAITOK);
if (rw->w_tmem)
rw->w_tmemsize = len;
}
if (rw->w_tmem) {
cp = rw->w_tmem;
second_time = 1;
goto again;
}
}
}
if (cp) {
struct rt_msghdr *rtm = (struct rt_msghdr *)cp0;
rtm->rtm_version = RTM_VERSION;
rtm->rtm_type = type;
rtm->rtm_msglen = len;
}
return (len);
}
void
rt_missmsg(int type, struct rt_addrinfo *rtinfo, int flags, int error)
{
struct rt_msghdr *rtm;
struct mbuf *m;
struct sockaddr *sa = rtinfo->rti_info[RTAX_DST];
struct sockproto route_proto = {PF_ROUTE, 0};
if (route_cb.any_count == 0)
return;
m = rt_msg1(type, rtinfo);
if (m == 0)
return;
rtm = mtod(m, struct rt_msghdr *);
rtm->rtm_flags = RTF_DONE | flags;
rtm->rtm_errno = error;
rtm->rtm_addrs = rtinfo->rti_addrs;
route_proto.sp_family = sa ? sa->sa_family : 0;
raw_input(m, &route_proto, &route_src, &route_dst);
}
void
rt_ifmsg(
struct ifnet *ifp)
{
struct if_msghdr *ifm;
struct mbuf *m;
struct rt_addrinfo info;
struct sockproto route_proto = {PF_ROUTE, 0};
if (route_cb.any_count == 0)
return;
bzero((caddr_t)&info, sizeof(info));
m = rt_msg1(RTM_IFINFO, &info);
if (m == 0)
return;
ifm = mtod(m, struct if_msghdr *);
ifm->ifm_index = ifp->if_index;
ifm->ifm_flags = (u_short)ifp->if_flags;
if_data_internal_to_if_data(ifp, &ifp->if_data, &ifm->ifm_data);
ifm->ifm_addrs = 0;
raw_input(m, &route_proto, &route_src, &route_dst);
}
void
rt_newaddrmsg(int cmd, struct ifaddr *ifa, int error, struct rtentry *rt)
{
struct rt_addrinfo info;
struct sockaddr *sa = 0;
int pass;
struct mbuf *m = 0;
struct ifnet *ifp = ifa->ifa_ifp;
struct sockproto route_proto = {PF_ROUTE, 0};
lck_mtx_assert(rnh_lock, LCK_MTX_ASSERT_OWNED);
RT_LOCK_ASSERT_HELD(rt);
if (route_cb.any_count == 0)
return;
RT_CONVERT_LOCK(rt);
for (pass = 1; pass < 3; pass++) {
bzero((caddr_t)&info, sizeof(info));
if ((cmd == RTM_ADD && pass == 1) ||
(cmd == RTM_DELETE && pass == 2)) {
struct ifa_msghdr *ifam;
int ncmd = cmd == RTM_ADD ? RTM_NEWADDR : RTM_DELADDR;
ifnet_lock_shared(ifp);
IFA_LOCK(ifa);
info.rti_info[RTAX_IFA] = sa = ifa->ifa_addr;
info.rti_info[RTAX_IFP] = ifp->if_lladdr->ifa_addr;
info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask;
info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
if ((m = rt_msg1(ncmd, &info)) == NULL) {
IFA_UNLOCK(ifa);
ifnet_lock_done(ifp);
continue;
}
IFA_UNLOCK(ifa);
ifnet_lock_done(ifp);
ifam = mtod(m, struct ifa_msghdr *);
ifam->ifam_index = ifp->if_index;
IFA_LOCK_SPIN(ifa);
ifam->ifam_metric = ifa->ifa_metric;
ifam->ifam_flags = ifa->ifa_flags;
IFA_UNLOCK(ifa);
ifam->ifam_addrs = info.rti_addrs;
}
if ((cmd == RTM_ADD && pass == 2) ||
(cmd == RTM_DELETE && pass == 1)) {
struct rt_msghdr *rtm;
if (rt == 0)
continue;
info.rti_info[RTAX_NETMASK] = rt_mask(rt);
info.rti_info[RTAX_DST] = sa = rt_key(rt);
info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
if ((m = rt_msg1(cmd, &info)) == NULL)
continue;
rtm = mtod(m, struct rt_msghdr *);
rtm->rtm_index = ifp->if_index;
rtm->rtm_flags |= rt->rt_flags;
rtm->rtm_errno = error;
rtm->rtm_addrs = info.rti_addrs;
}
route_proto.sp_protocol = sa ? sa->sa_family : 0;
raw_input(m, &route_proto, &route_src, &route_dst);
}
}
void
rt_newmaddrmsg(int cmd, struct ifmultiaddr *ifma)
{
struct rt_addrinfo info;
struct mbuf *m = 0;
struct ifnet *ifp = ifma->ifma_ifp;
struct ifma_msghdr *ifmam;
struct sockproto route_proto = {PF_ROUTE, 0};
if (route_cb.any_count == 0)
return;
ifnet_lock_shared(ifp);
bzero((caddr_t)&info, sizeof(info));
IFMA_LOCK(ifma);
info.rti_info[RTAX_IFA] = ifma->ifma_addr;
info.rti_info[RTAX_IFP] = ifp->if_lladdr->ifa_addr;
info.rti_info[RTAX_GATEWAY] = (ifma->ifma_ll != NULL) ? ifma->ifma_ll->ifma_addr : NULL;
if ((m = rt_msg1(cmd, &info)) == NULL) {
IFMA_UNLOCK(ifma);
ifnet_lock_done(ifp);
return;
}
ifmam = mtod(m, struct ifma_msghdr *);
ifmam->ifmam_index = ifp->if_index;
ifmam->ifmam_addrs = info.rti_addrs;
route_proto.sp_protocol = ifma->ifma_addr->sa_family;
IFMA_UNLOCK(ifma);
ifnet_lock_done(ifp);
raw_input(m, &route_proto, &route_src, &route_dst);
}
int
sysctl_dumpentry(struct radix_node *rn, void *vw)
{
struct walkarg *w = vw;
struct rtentry *rt = (struct rtentry *)rn;
int error = 0, size;
struct rt_addrinfo info;
RT_LOCK(rt);
if (w->w_op == NET_RT_FLAGS && !(rt->rt_flags & w->w_arg)) {
RT_UNLOCK(rt);
return 0;
}
bzero((caddr_t)&info, sizeof(info));
info.rti_info[RTAX_DST] = rt_key(rt);
info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
info.rti_info[RTAX_NETMASK] = rt_mask(rt);
info.rti_info[RTAX_GENMASK] = rt->rt_genmask;
if (w->w_op != NET_RT_DUMP2) {
size = rt_msg2(RTM_GET, &info, 0, w);
if (w->w_req && w->w_tmem) {
struct rt_msghdr *rtm = (struct rt_msghdr *)w->w_tmem;
rtm->rtm_flags = rt->rt_flags;
rtm->rtm_use = rt->rt_use;
rt_getmetrics(rt, &rtm->rtm_rmx);
rtm->rtm_index = rt->rt_ifp->if_index;
rtm->rtm_pid = 0;
rtm->rtm_seq = 0;
rtm->rtm_errno = 0;
rtm->rtm_addrs = info.rti_addrs;
error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size);
RT_UNLOCK(rt);
return (error);
}
} else {
size = rt_msg2(RTM_GET2, &info, 0, w);
if (w->w_req && w->w_tmem) {
struct rt_msghdr2 *rtm = (struct rt_msghdr2 *)w->w_tmem;
rtm->rtm_flags = rt->rt_flags;
rtm->rtm_use = rt->rt_use;
rt_getmetrics(rt, &rtm->rtm_rmx);
rtm->rtm_index = rt->rt_ifp->if_index;
rtm->rtm_refcnt = rt->rt_refcnt;
if (rt->rt_parent)
rtm->rtm_parentflags = rt->rt_parent->rt_flags;
else
rtm->rtm_parentflags = 0;
rtm->rtm_reserved = 0;
rtm->rtm_addrs = info.rti_addrs;
error = SYSCTL_OUT(w->w_req, (caddr_t)rtm, size);
RT_UNLOCK(rt);
return (error);
}
}
RT_UNLOCK(rt);
return (error);
}
int
sysctl_dumpentry_ext(struct radix_node *rn, void *vw)
{
struct walkarg *w = vw;
struct rtentry *rt = (struct rtentry *)rn;
int error = 0, size;
struct rt_addrinfo info;
RT_LOCK(rt);
if (w->w_op == NET_RT_DUMPX_FLAGS && !(rt->rt_flags & w->w_arg)) {
RT_UNLOCK(rt);
return (0);
}
bzero(&info, sizeof (info));
info.rti_info[RTAX_DST] = rt_key(rt);
info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
info.rti_info[RTAX_NETMASK] = rt_mask(rt);
info.rti_info[RTAX_GENMASK] = rt->rt_genmask;
size = rt_msg2(RTM_GET_EXT, &info, 0, w);
if (w->w_req && w->w_tmem) {
struct rt_msghdr_ext *ertm = (struct rt_msghdr_ext *)w->w_tmem;
ertm->rtm_flags = rt->rt_flags;
ertm->rtm_use = rt->rt_use;
rt_getmetrics(rt, &ertm->rtm_rmx);
ertm->rtm_index = rt->rt_ifp->if_index;
ertm->rtm_pid = 0;
ertm->rtm_seq = 0;
ertm->rtm_errno = 0;
ertm->rtm_addrs = info.rti_addrs;
if (rt->rt_llinfo_get_ri == NULL)
bzero(&ertm->rtm_ri, sizeof (ertm->rtm_ri));
else
rt->rt_llinfo_get_ri(rt, &ertm->rtm_ri);
error = SYSCTL_OUT(w->w_req, (caddr_t)ertm, size);
RT_UNLOCK(rt);
return (error);
}
RT_UNLOCK(rt);
return (error);
}
int
sysctl_iflist(int af, struct walkarg *w)
{
struct ifnet *ifp;
struct ifaddr *ifa;
struct rt_addrinfo info;
int len, error = 0;
int pass = 0;
int total_len = 0, current_len = 0;
char *total_buffer = NULL, *cp = NULL;
bzero((caddr_t)&info, sizeof(info));
for (pass = 0; pass < 2; pass++) {
ifnet_head_lock_shared();
TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
if (error)
break;
if (w->w_arg && w->w_arg != ifp->if_index)
continue;
ifnet_lock_shared(ifp);
ifa = ifp->if_lladdr;
info.rti_info[RTAX_IFP] = ifa->ifa_addr;
len = rt_msg2(RTM_IFINFO, &info, (caddr_t)0, NULL);
if (pass == 0) {
total_len += len;
} else {
struct if_msghdr *ifm;
if (current_len + len > total_len) {
ifnet_lock_done(ifp);
printf("sysctl_iflist: current_len (%d) + len (%d) > total_len (%d)\n",
current_len, len, total_len);
error = ENOBUFS;
break;
}
info.rti_info[RTAX_IFP] = ifa->ifa_addr;
len = rt_msg2(RTM_IFINFO, &info, (caddr_t)cp, NULL);
info.rti_info[RTAX_IFP] = NULL;
ifm = (struct if_msghdr *)cp;
ifm->ifm_index = ifp->if_index;
ifm->ifm_flags = (u_short)ifp->if_flags;
if_data_internal_to_if_data(ifp, &ifp->if_data,
&ifm->ifm_data);
ifm->ifm_addrs = info.rti_addrs;
cp += len;
VERIFY(IS_P2ALIGNED(cp, sizeof(u_int32_t)));
current_len += len;
}
while ((ifa = ifa->ifa_link.tqe_next) != 0) {
IFA_LOCK(ifa);
if (af && af != ifa->ifa_addr->sa_family) {
IFA_UNLOCK(ifa);
continue;
}
info.rti_info[RTAX_IFA] = ifa->ifa_addr;
info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask;
info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
len = rt_msg2(RTM_NEWADDR, &info, 0, 0);
if (pass == 0) {
total_len += len;
} else {
struct ifa_msghdr *ifam;
if (current_len + len > total_len) {
IFA_UNLOCK(ifa);
printf("sysctl_iflist: current_len (%d) + len (%d) > total_len (%d)\n",
current_len, len, total_len);
error = ENOBUFS;
break;
}
len = rt_msg2(RTM_NEWADDR, &info, (caddr_t)cp, NULL);
ifam = (struct ifa_msghdr *)cp;
ifam->ifam_index = ifa->ifa_ifp->if_index;
ifam->ifam_flags = ifa->ifa_flags;
ifam->ifam_metric = ifa->ifa_metric;
ifam->ifam_addrs = info.rti_addrs;
cp += len;
VERIFY(IS_P2ALIGNED(cp, sizeof(u_int32_t)));
current_len += len;
}
IFA_UNLOCK(ifa);
}
ifnet_lock_done(ifp);
info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] =
info.rti_info[RTAX_BRD] = NULL;
}
ifnet_head_done();
if (error)
break;
if (pass == 0) {
if (total_len == 0)
total_len = 1;
total_len += total_len >> 3;
total_buffer = _MALLOC(total_len, M_RTABLE, M_ZERO | M_WAITOK);
if (total_buffer == NULL) {
printf("sysctl_iflist: _MALLOC(%d) failed\n", total_len);
error = ENOBUFS;
break;
}
cp = total_buffer;
VERIFY(IS_P2ALIGNED(cp, sizeof(u_int32_t)));
} else {
error = SYSCTL_OUT(w->w_req, total_buffer, current_len);
if (error)
break;
}
}
if (total_buffer != NULL)
_FREE(total_buffer, M_RTABLE);
return error;
}
int
sysctl_iflist2(int af, struct walkarg *w)
{
struct ifnet *ifp;
struct ifaddr *ifa;
struct rt_addrinfo info;
int len, error = 0;
int pass = 0;
int total_len = 0, current_len = 0;
char *total_buffer = NULL, *cp = NULL;
bzero((caddr_t)&info, sizeof(info));
for (pass = 0; pass < 2; pass++) {
ifnet_head_lock_shared();
TAILQ_FOREACH(ifp, &ifnet_head, if_link) {
if (error)
break;
if (w->w_arg && w->w_arg != ifp->if_index)
continue;
ifnet_lock_shared(ifp);
ifa = ifp->if_lladdr;
info.rti_info[RTAX_IFP] = ifa->ifa_addr;
len = rt_msg2(RTM_IFINFO2, &info, (caddr_t)0, NULL);
if (pass == 0) {
total_len += len;
} else {
struct if_msghdr2 *ifm;
if (current_len + len > total_len) {
ifnet_lock_done(ifp);
printf("sysctl_iflist2: current_len (%d) + len (%d) > total_len (%d)\n",
current_len, len, total_len);
error = ENOBUFS;
break;
}
info.rti_info[RTAX_IFP] = ifa->ifa_addr;
len = rt_msg2(RTM_IFINFO2, &info, (caddr_t)cp, NULL);
info.rti_info[RTAX_IFP] = NULL;
ifm = (struct if_msghdr2 *)cp;
ifm->ifm_addrs = info.rti_addrs;
ifm->ifm_flags = (u_short)ifp->if_flags;
ifm->ifm_index = ifp->if_index;
ifm->ifm_snd_len = ifp->if_snd.ifq_len;
ifm->ifm_snd_maxlen = ifp->if_snd.ifq_maxlen;
ifm->ifm_snd_drops = ifp->if_snd.ifq_drops;
ifm->ifm_timer = ifp->if_timer;
if_data_internal_to_if_data64(ifp, &ifp->if_data,
&ifm->ifm_data);
cp += len;
VERIFY(IS_P2ALIGNED(cp, sizeof(u_int32_t)));
current_len += len;
}
while ((ifa = ifa->ifa_link.tqe_next) != 0) {
IFA_LOCK(ifa);
if (af && af != ifa->ifa_addr->sa_family) {
IFA_UNLOCK(ifa);
continue;
}
info.rti_info[RTAX_IFA] = ifa->ifa_addr;
info.rti_info[RTAX_NETMASK] = ifa->ifa_netmask;
info.rti_info[RTAX_BRD] = ifa->ifa_dstaddr;
len = rt_msg2(RTM_NEWADDR, &info, 0, 0);
if (pass == 0) {
total_len += len;
} else {
struct ifa_msghdr *ifam;
if (current_len + len > total_len) {
IFA_UNLOCK(ifa);
printf("sysctl_iflist2: current_len (%d) + len (%d) > total_len (%d)\n",
current_len, len, total_len);
error = ENOBUFS;
break;
}
len = rt_msg2(RTM_NEWADDR, &info, (caddr_t)cp, 0);
ifam = (struct ifa_msghdr *)cp;
ifam->ifam_index = ifa->ifa_ifp->if_index;
ifam->ifam_flags = ifa->ifa_flags;
ifam->ifam_metric = ifa->ifa_metric;
ifam->ifam_addrs = info.rti_addrs;
cp += len;
VERIFY(IS_P2ALIGNED(cp, sizeof(u_int32_t)));
current_len += len;
}
IFA_UNLOCK(ifa);
}
if (error) {
ifnet_lock_done(ifp);
break;
}
{
struct ifmultiaddr *ifma;
for (ifma = LIST_FIRST(&ifp->if_multiaddrs);
ifma != NULL; ifma = LIST_NEXT(ifma, ifma_link)) {
struct ifaddr *ifa0;
IFMA_LOCK(ifma);
if (af && af != ifma->ifma_addr->sa_family) {
IFMA_UNLOCK(ifma);
continue;
}
bzero((caddr_t)&info, sizeof(info));
info.rti_info[RTAX_IFA] = ifma->ifma_addr;
ifa0 = ifp->if_lladdr;
info.rti_info[RTAX_IFP] = ifa0->ifa_addr;
if (ifma->ifma_ll != NULL)
info.rti_info[RTAX_GATEWAY] = ifma->ifma_ll->ifma_addr;
len = rt_msg2(RTM_NEWMADDR2, &info, 0, 0);
if (pass == 0) {
total_len += len;
} else {
struct ifma_msghdr2 *ifmam;
if (current_len + len > total_len) {
IFMA_UNLOCK(ifma);
printf("sysctl_iflist2: current_len (%d) + len (%d) > total_len (%d)\n",
current_len, len, total_len);
error = ENOBUFS;
break;
}
len = rt_msg2(RTM_NEWMADDR2, &info, (caddr_t)cp, 0);
ifmam = (struct ifma_msghdr2 *)cp;
ifmam->ifmam_addrs = info.rti_addrs;
ifmam->ifmam_flags = 0;
ifmam->ifmam_index =
ifma->ifma_ifp->if_index;
ifmam->ifmam_refcount =
ifma->ifma_reqcnt;
cp += len;
VERIFY(IS_P2ALIGNED(cp, sizeof(u_int32_t)));
current_len += len;
}
IFMA_UNLOCK(ifma);
}
}
ifnet_lock_done(ifp);
info.rti_info[RTAX_IFA] = info.rti_info[RTAX_NETMASK] =
info.rti_info[RTAX_BRD] = NULL;
}
ifnet_head_done();
if (error)
break;
if (pass == 0) {
if (total_len == 0)
total_len = 1;
total_len += total_len >> 3;
total_buffer = _MALLOC(total_len, M_RTABLE, M_ZERO | M_WAITOK);
if (total_buffer == NULL) {
printf("sysctl_iflist2: _MALLOC(%d) failed\n", total_len);
error = ENOBUFS;
break;
}
cp = total_buffer;
VERIFY(IS_P2ALIGNED(cp, sizeof(u_int32_t)));
} else {
error = SYSCTL_OUT(w->w_req, total_buffer, current_len);
if (error)
break;
}
}
if (total_buffer != NULL)
_FREE(total_buffer, M_RTABLE);
return error;
}
static int
sysctl_rtstat(struct sysctl_req *req)
{
int error;
error = SYSCTL_OUT(req, &rtstat, sizeof(struct rtstat));
if (error)
return (error);
return 0;
}
static int
sysctl_rttrash(struct sysctl_req *req)
{
int error;
error = SYSCTL_OUT(req, &rttrash, sizeof(rttrash));
if (error)
return (error);
return 0;
}
static void
rt_drainall(void)
{
struct timeval delta_ts, current_ts;
if (ifnet_aggressive_drainers == 0) {
if (timerisset(&last_ts))
timerclear(&last_ts);
return;
}
microuptime(¤t_ts);
timersub(¤t_ts, &last_ts, &delta_ts);
if (delta_ts.tv_sec >= rt_if_idle_drain_interval) {
timerclear(&last_ts);
in_rtqdrain();
in_arpdrain(NULL);
#if INET6
in6_rtqdrain();
nd6_drain(NULL);
#endif
last_ts.tv_sec = current_ts.tv_sec;
last_ts.tv_usec = current_ts.tv_usec;
}
}
void
rt_aggdrain(int on)
{
lck_mtx_assert(rnh_lock, LCK_MTX_ASSERT_OWNED);
if (on)
routedomain.dom_protosw->pr_flags |= PR_AGGDRAIN;
else
routedomain.dom_protosw->pr_flags &= ~PR_AGGDRAIN;
}
static int
sysctl_rtsock SYSCTL_HANDLER_ARGS
{
#pragma unused(oidp)
int *name = (int *)arg1;
u_int namelen = arg2;
struct radix_node_head *rnh;
int i, error = EINVAL;
u_char af;
struct walkarg w;
name ++;
namelen--;
if (req->newptr)
return (EPERM);
if (namelen != 3)
return (EINVAL);
af = name[0];
Bzero(&w, sizeof(w));
w.w_op = name[1];
w.w_arg = name[2];
w.w_req = req;
switch (w.w_op) {
case NET_RT_DUMP:
case NET_RT_DUMP2:
case NET_RT_FLAGS:
lck_mtx_lock(rnh_lock);
for (i = 1; i <= AF_MAX; i++)
if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
(error = rnh->rnh_walktree(rnh,
sysctl_dumpentry, &w)))
break;
lck_mtx_unlock(rnh_lock);
break;
case NET_RT_DUMPX:
case NET_RT_DUMPX_FLAGS:
lck_mtx_lock(rnh_lock);
for (i = 1; i <= AF_MAX; i++)
if ((rnh = rt_tables[i]) && (af == 0 || af == i) &&
(error = rnh->rnh_walktree(rnh,
sysctl_dumpentry_ext, &w)))
break;
lck_mtx_unlock(rnh_lock);
break;
case NET_RT_IFLIST:
error = sysctl_iflist(af, &w);
break;
case NET_RT_IFLIST2:
error = sysctl_iflist2(af, &w);
break;
case NET_RT_STAT:
error = sysctl_rtstat(req);
break;
case NET_RT_TRASH:
error = sysctl_rttrash(req);
break;
}
if (w.w_tmem)
FREE(w.w_tmem, M_RTABLE);
return (error);
}
SYSCTL_NODE(_net, PF_ROUTE, routetable, CTLFLAG_RD | CTLFLAG_LOCKED, sysctl_rtsock, "");
static struct protosw routesw[] = {
{ SOCK_RAW, &routedomain, 0, PR_ATOMIC|PR_ADDR,
0, route_output, raw_ctlinput, 0,
0,
raw_init, 0, 0, rt_drainall,
0,
&route_usrreqs,
0, 0, 0,
{ 0, 0 }, 0, { 0 }
}
};
struct domain routedomain =
{ PF_ROUTE, "route", route_init, 0, 0,
routesw,
NULL, NULL, 0, 0, 0, 0, NULL, 0,
{ 0, 0 } };
DOMAIN_SET(route);