/*
- * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
+ * Copyright (c) 2000-2008 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#include <machine/spl.h>
extern struct rtstat rtstat;
-extern int rttrash;
extern u_long route_generation;
extern int use_routegenid;
extern int check_routeselfref;
static int route_output(struct mbuf *, struct socket *);
static void rt_setmetrics(u_long, struct rt_metrics *, struct rt_metrics *);
static void rt_setif(struct rtentry *, struct sockaddr *, struct sockaddr *,
- struct sockaddr *);
+ struct sockaddr *, unsigned int);
+
+#define SIN(sa) ((struct sockaddr_in *)(size_t)(sa))
/* Sleazy use of local variables throughout file, warning!!!! */
#define dst info.rti_info[RTAX_DST]
#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 == 0 || ((m->m_len < sizeof(long)) && (m = m_pullup(m, sizeof(long))) == 0))
+ if (m == NULL ||
+ ((m->m_len < sizeof(long)) && (m = m_pullup(m, sizeof(long))) == 0))
return (ENOBUFS);
if ((m->m_flags & M_PKTHDR) == 0)
panic("route_output");
len = m->m_pkthdr.len;
if (len < sizeof(*rtm) ||
len != mtod(m, struct rt_msghdr *)->rtm_msglen) {
- dst = 0;
+ dst = NULL;
senderr(EINVAL);
}
R_Malloc(rtm, struct rt_msghdr *, len);
- if (rtm == 0) {
- dst = 0;
+ if (rtm == NULL) {
+ dst = NULL;
senderr(ENOBUFS);
}
m_copydata(m, 0, len, (caddr_t)rtm);
if (rtm->rtm_version != RTM_VERSION) {
- dst = 0;
+ dst = NULL;
senderr(EPROTONOSUPPORT);
}
-
+
/*
* Silent version of RTM_GET for Reachabiltiy APIs. We may change
* all RTM_GETs to be silent in the future, so this is private for now.
sendonlytoself = 1;
rtm->rtm_type = RTM_GET;
}
-
+
/*
* Perform permission checking, only privileged sockets
* may perform operations other than RTM_GET
*/
if (rtm->rtm_type != RTM_GET && (so->so_state & SS_PRIV) == 0) {
- dst = 0;
+ 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)) {
- dst = 0;
+ dst = NULL;
senderr(EINVAL);
}
- if (dst == 0 || (dst->sa_family >= AF_MAX)
- || (gate != 0 && (gate->sa_family >= AF_MAX))) {
+ if (dst == NULL || (dst->sa_family >= AF_MAX) ||
+ (gate != NULL && (gate->sa_family >= AF_MAX))) {
senderr(EINVAL);
}
+
+ if (dst->sa_family == AF_INET && dst->sa_len != sizeof (dst_in)) {
+ /* At minimum, we need up to sin_addr */
+ if (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(dst)->sin_port;
+ dst_in.sin_addr = SIN(dst)->sin_addr;
+ dst = (struct sockaddr *)&dst_in;
+ }
+
+ if (gate != NULL &&
+ gate->sa_family == AF_INET && gate->sa_len != sizeof (gate_in)) {
+ /* At minimum, we need up to sin_addr */
+ if (gate->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(gate)->sin_port;
+ gate_in.sin_addr = SIN(gate)->sin_addr;
+ gate = (struct sockaddr *)&gate_in;
+ }
+
if (genmask) {
struct radix_node *t;
t = rn_addmask((caddr_t)genmask, 0, 1);
else
senderr(ENOBUFS);
}
+
+ /*
+ * If RTF_IFSCOPE flag is set, then rtm_index specifies the scope.
+ */
+ if (rtm->rtm_flags & RTF_IFSCOPE) {
+ /* Scoped routing is for AF_INET only */
+ if (dst->sa_family != AF_INET)
+ senderr(EINVAL);
+ ifscope = rtm->rtm_index;
+ }
+
switch (rtm->rtm_type) {
-
+
case RTM_ADD:
- if (gate == 0)
+ if (gate == NULL)
senderr(EINVAL);
#ifdef __APPLE__
}
}
#endif
- error = rtrequest_locked(RTM_ADD, dst, gate, netmask,
- rtm->rtm_flags, &saved_nrt);
+ error = rtrequest_scoped_locked(RTM_ADD, dst, gate,
+ netmask, rtm->rtm_flags, &saved_nrt, ifscope);
if (error == 0 && saved_nrt) {
#ifdef __APPLE__
/*
* dwiggins@bbn.com
*/
- rt_setif(saved_nrt, ifpaddr, ifaaddr, gate);
+ rt_setif(saved_nrt, ifpaddr, ifaaddr, gate,
+ ifscope);
#endif
rt_setmetrics(rtm->rtm_inits,
&rtm->rtm_rmx, &saved_nrt->rt_rmx);
saved_nrt->rt_rmx.rmx_locks &= ~(rtm->rtm_inits);
saved_nrt->rt_rmx.rmx_locks |=
(rtm->rtm_inits & rtm->rtm_rmx.rmx_locks);
- rtunref(saved_nrt);
saved_nrt->rt_genmask = genmask;
+ rtunref(saved_nrt);
}
break;
case RTM_DELETE:
- error = rtrequest_locked(RTM_DELETE, dst, gate, netmask,
- rtm->rtm_flags, &saved_nrt);
+ error = rtrequest_scoped_locked(RTM_DELETE, dst,
+ gate, netmask, rtm->rtm_flags, &saved_nrt, ifscope);
if (error == 0) {
rt = saved_nrt;
goto report;
case RTM_GET:
case RTM_CHANGE:
case RTM_LOCK:
- if ((rnh = rt_tables[dst->sa_family]) == 0) {
+ if ((rnh = rt_tables[dst->sa_family]) == NULL)
senderr(EAFNOSUPPORT);
- } else if ((rt = (struct rtentry *)
- rnh->rnh_lookup(dst, netmask, rnh)) != NULL)
- rtref(rt);
- else
+
+ /*
+ * Lookup the best match based on the key-mask pair;
+ * callee adds a reference and checks for root node.
+ */
+ rt = rt_lookup(TRUE, dst, netmask, rnh, ifscope);
+ if (rt == NULL)
senderr(ESRCH);
+
switch(rtm->rtm_type) {
case RTM_GET: {
* equivalent to the code found at this very spot
* in BSD.
*/
- rt_setif(rt, ifpaddr, ifaaddr, gate);
+ rt_setif(rt, ifpaddr, ifaaddr, gate,
+ ifscope);
#endif
rt_setmetrics(rtm->rtm_inits, &rtm->rtm_rmx,
* Set route's interface given ifpaddr, ifaaddr, and gateway.
*/
static void
-rt_setif(
- struct rtentry *rt,
- struct sockaddr *Ifpaddr,
- struct sockaddr *Ifaaddr,
- struct sockaddr *Gate)
+rt_setif(struct rtentry *rt, struct sockaddr *Ifpaddr, struct sockaddr *Ifaaddr,
+ struct sockaddr *Gate, unsigned int ifscope)
{
struct ifaddr *ifa = 0;
struct ifnet *ifp = 0;
if (use_routegenid)
route_generation++;
- /* new gateway could require new ifaddr, ifp;
- flags may also be different; ifp may be specified
- by ll sockaddr when protocol address is ambiguous */
- if (Ifpaddr && (ifa = ifa_ifwithnet(Ifpaddr)) &&
+ /*
+ * New gateway could require new ifaddr, ifp; flags may also
+ * be different; ifp may be specified by ll sockaddr when
+ * protocol address is ambiguous.
+ */
+ if (Ifpaddr && (ifa = ifa_ifwithnet_scoped(Ifpaddr, ifscope)) &&
(ifp = ifa->ifa_ifp) && (Ifaaddr || Gate)) {
- ifafree(ifa);
- ifa = ifaof_ifpforaddr(Ifaaddr ? Ifaaddr : Gate,
- ifp);
- }
- else
- {
+ ifafree(ifa);
+ ifa = ifaof_ifpforaddr(Ifaaddr ? Ifaaddr : Gate, ifp);
+ } else {
if (ifa) {
ifafree(ifa);
ifa = 0;
if (Ifpaddr && (ifp = if_withname(Ifpaddr)) ) {
if (Gate) {
ifa = ifaof_ifpforaddr(Gate, ifp);
- }
- else {
+ } else {
ifnet_lock_shared(ifp);
ifa = TAILQ_FIRST(&ifp->if_addrhead);
ifaref(ifa);
ifnet_lock_done(ifp);
}
- }
- else if (Ifaaddr && (ifa = ifa_ifwithaddr(Ifaaddr))) {
+ } else if (Ifaaddr &&
+ (ifa = ifa_ifwithaddr_scoped(Ifaaddr, ifscope))) {
ifp = ifa->ifa_ifp;
- }
- else if (Gate && (ifa = ifa_ifwithroute_locked(rt->rt_flags,
- rt_key(rt), Gate))) {
+ } else if (Gate &&
+ (ifa = ifa_ifwithroute_scoped_locked(rt->rt_flags,
+ rt_key(rt), Gate, ifscope))) {
ifp = ifa->ifa_ifp;
}
}
if (ifa) {
struct ifaddr *oifa = rt->rt_ifa;
if (oifa != ifa) {
- if (oifa && oifa->ifa_rtrequest)
- oifa->ifa_rtrequest(RTM_DELETE,
- rt, Gate);
+ if (oifa && oifa->ifa_rtrequest)
+ oifa->ifa_rtrequest(RTM_DELETE, rt, Gate);
rtsetifa(rt, ifa);
- rt->rt_ifp = ifp;
- rt->rt_rmx.rmx_mtu = ifp->if_mtu;
- if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
+ rt->rt_ifp = ifp;
+ /*
+ * If this is the (non-scoped) default route, record
+ * the interface index used for the primary ifscope.
+ */
+ if (rt_inet_default(rt, rt_key(rt)))
+ set_primary_ifscope(rt->rt_ifp->if_index);
+ rt->rt_rmx.rmx_mtu = ifp->if_mtu;
+ if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, Gate);
} else {
ifafree(ifa);
ifafree(ifa);
return;
}
- call_ifareq:
+call_ifareq:
/* XXX: to reset gateway to correct value, at RTM_CHANGE */
if (rt->rt_ifa && rt->rt_ifa->ifa_rtrequest)
rt->rt_ifa->ifa_rtrequest(RTM_ADD, rt, Gate);
static int
sysctl_rtsock SYSCTL_HANDLER_ARGS
{
+#pragma unused(oidp)
int *name = (int *)arg1;
u_int namelen = arg2;
struct radix_node_head *rnh;
projects / apple / xnu.git / blobdiff