/*
* 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:
* 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
* 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.
+ *
+ * $FreeBSD: src/sys/netinet6/raw_ip6.c,v 1.7.2.4 2001/07/29 19:32:40 ume Exp $
*/
/*
*
* @(#)raw_ip.c 8.2 (Berkeley) 1/4/94
*/
-#if BSD310
-#include "opt_inet.h"
-#endif
-
-#include <stddef.h>
-
#include <sys/param.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <netinet6/ip6_var.h>
#include <netinet6/ip6_mroute.h>
#include <netinet/icmp6.h>
-#if defined(__FreeBSD__) && __FreeBSD__ >= 3 || defined (__APPLE__)
#include <netinet/in_pcb.h>
-#endif
#include <netinet6/in6_pcb.h>
#include <netinet6/nd6.h>
#include <netinet6/ip6protosw.h>
+#if ENABLE_DEFAULT_SCOPE
+#include <netinet6/scope6_var.h>
+#endif
+#include <netinet6/raw_ip6.h>
+#include <netinet6/ip6_fw.h>
#if IPSEC
#include <netinet6/ipsec.h>
+#include <netinet6/ipsec6.h>
+extern int ipsec_bypass;
+extern lck_mtx_t *sadb_mutex;
#endif /*IPSEC*/
#include "faith.h"
+#if defined(NFAITH) && 0 < NFAITH
+#include <net/if_faith.h>
+#endif
-#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
-#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
+#define satosin6(sa) ((struct sockaddr_in6 *)(sa))
+#define ifatoia6(ifa) ((struct in6_ifaddr *)(ifa))
/*
* Raw interface to IP6 protocol.
*/
-extern struct inpcbhead ripcb;
-extern struct inpcbinfo ripcbinfo;
+extern struct inpcbhead ripcb;
+extern struct inpcbinfo ripcbinfo;
extern u_long rip_sendspace;
extern u_long rip_recvspace;
+extern u_long route_generation;
+
+struct rip6stat rip6stat;
/*
* Setup generic address and protocol structures
* mbuf chain.
*/
int
-rip6_input(mp, offp, proto)
- struct mbuf **mp;
- int *offp, proto;
+rip6_input(
+ struct mbuf **mp,
+ int *offp)
{
struct mbuf *m = *mp;
register struct ip6_hdr *ip6 = mtod(m, struct ip6_hdr *);
register struct inpcb *in6p;
struct inpcb *last = 0;
- struct ip6_recvpktopts opts;
+ struct mbuf *opts = NULL;
struct sockaddr_in6 rip6src;
+ int proto = ip6->ip6_nxt;
+
+ rip6stat.rip6s_ipackets++;
#if defined(NFAITH) && 0 < NFAITH
- if (m->m_pkthdr.rcvif) {
- if (m->m_pkthdr.rcvif->if_type == IFT_FAITH) {
- /* XXX send icmp6 host/port unreach? */
- m_freem(m);
- return IPPROTO_DONE;
- }
+ if (faithprefix(&ip6->ip6_dst)) {
+ /* XXX send icmp6 host/port unreach? */
+ m_freem(m);
+ return IPPROTO_DONE;
}
#endif
+
init_sin6(&rip6src, m); /* general init */
- bzero(&opts, sizeof(opts));
+ lck_rw_lock_shared(ripcbinfo.mtx);
LIST_FOREACH(in6p, &ripcb, inp_list) {
- if ((in6p->in6p_vflag & INP_IPV6) == NULL)
+ if ((in6p->in6p_vflag & INP_IPV6) == 0)
continue;
if (in6p->in6p_ip6_nxt &&
in6p->in6p_ip6_nxt != proto)
if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr) &&
!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr, &ip6->ip6_src))
continue;
- if (in6p->in6p_cksum != -1
- && in6_cksum(m, ip6->ip6_nxt, *offp,
- m->m_pkthdr.len - *offp)) {
- /* XXX bark something */
- continue;
+ if (in6p->in6p_cksum != -1) {
+ rip6stat.rip6s_isum++;
+ if (in6_cksum(m, ip6->ip6_nxt, *offp,
+ m->m_pkthdr.len - *offp)) {
+ rip6stat.rip6s_badsum++;
+ continue;
+ }
}
if (last) {
struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
+
+#if IPSEC
+ /*
+ * Check AH/ESP integrity.
+ */
+ if (ipsec_bypass == 0 && n) {
+ lck_mtx_lock(sadb_mutex);
+ if (ipsec6_in_reject_so(n, last->inp_socket)) {
+ m_freem(n);
+ ipsec6stat.in_polvio++;
+ /* do not inject data into pcb */
+ }
+ lck_mtx_unlock(sadb_mutex);
+ } else
+#endif /*IPSEC*/
if (n) {
if (last->in6p_flags & IN6P_CONTROLOPTS ||
last->in6p_socket->so_options & SO_TIMESTAMP)
- ip6_savecontrol(last, ip6, n, &opts,
- NULL);
+ ip6_savecontrol(last, &opts, ip6, n);
/* strip intermediate headers */
m_adj(n, *offp);
if (sbappendaddr(&last->in6p_socket->so_rcv,
(struct sockaddr *)&rip6src,
- n, opts.head) == 0) {
- /* should notify about lost packet */
- m_freem(n);
- if (opts.head)
- m_freem(opts.head);
+ n, opts, NULL) == 0) {
+ rip6stat.rip6s_fullsock++;
} else
sorwakeup(last->in6p_socket);
- bzero(&opts, sizeof(opts));
+ opts = NULL;
}
}
last = in6p;
}
+ lck_rw_done(ripcbinfo.mtx);
+#if IPSEC
+ /*
+ * Check AH/ESP integrity.
+ */
+ if (ipsec_bypass == 0 && last) {
+ lck_mtx_lock(sadb_mutex);
+ if (ipsec6_in_reject_so(m, last->inp_socket)) {
+ m_freem(m);
+ ipsec6stat.in_polvio++;
+ ip6stat.ip6s_delivered--;
+ /* do not inject data into pcb */
+ }
+ lck_mtx_unlock(sadb_mutex);
+ } else
+#endif /*IPSEC*/
if (last) {
if (last->in6p_flags & IN6P_CONTROLOPTS ||
last->in6p_socket->so_options & SO_TIMESTAMP)
- ip6_savecontrol(last, ip6, m, &opts, NULL);
+ ip6_savecontrol(last, &opts, ip6, m);
/* strip intermediate headers */
m_adj(m, *offp);
if (sbappendaddr(&last->in6p_socket->so_rcv,
- (struct sockaddr *)&rip6src, m, opts.head) == 0) {
- m_freem(m);
- if (opts.head)
- m_freem(opts.head);
+ (struct sockaddr *)&rip6src, m, opts, NULL) == 0) {
+ rip6stat.rip6s_fullsock++;
} else
sorwakeup(last->in6p_socket);
} else {
+ rip6stat.rip6s_nosock++;
+ if (m->m_flags & M_MCAST)
+ rip6stat.rip6s_nosockmcast++;
if (proto == IPPROTO_NONE)
m_freem(m);
else {
}
void
-rip6_ctlinput(cmd, sa, d)
- int cmd;
- struct sockaddr *sa;
- void *d;
+rip6_ctlinput(
+ int cmd,
+ struct sockaddr *sa,
+ void *d)
{
- struct sockaddr_in6 sa6;
struct ip6_hdr *ip6;
struct mbuf *m;
int off = 0;
- void (*notify) __P((struct inpcb *, int)) = in6_rtchange;
+ struct ip6ctlparam *ip6cp = NULL;
+ const struct sockaddr_in6 *sa6_src = NULL;
+ void (*notify)(struct inpcb *, int) = in6_rtchange;
if (sa->sa_family != AF_INET6 ||
sa->sa_len != sizeof(struct sockaddr_in6))
/* if the parameter is from icmp6, decode it. */
if (d != NULL) {
- struct ip6ctlparam *ip6cp = (struct ip6ctlparam *)d;
+ ip6cp = (struct ip6ctlparam *)d;
m = ip6cp->ip6c_m;
ip6 = ip6cp->ip6c_ip6;
off = ip6cp->ip6c_off;
+ sa6_src = ip6cp->ip6c_src;
} else {
m = NULL;
ip6 = NULL;
+ sa6_src = &sa6_any;
}
- /* translate addresses into internal form */
- sa6 = *(struct sockaddr_in6 *)sa;
- if (IN6_IS_ADDR_LINKLOCAL(&sa6.sin6_addr) && m && m->m_pkthdr.rcvif)
- sa6.sin6_addr.s6_addr16[1] = htons(m->m_pkthdr.rcvif->if_index);
-
- if (ip6) {
- /*
- * XXX: We assume that when IPV6 is non NULL,
- * M and OFF are valid.
- */
- struct in6_addr s;
-
- /* translate addresses into internal form */
- memcpy(&s, &ip6->ip6_src, sizeof(s));
- if (IN6_IS_ADDR_LINKLOCAL(&s))
- s.s6_addr16[1] = htons(m->m_pkthdr.rcvif->if_index);
-
- (void) in6_pcbnotify(&ripcb, (struct sockaddr *)&sa6,
- 0, &s, 0, cmd, notify);
- } else
- (void) in6_pcbnotify(&ripcb, (struct sockaddr *)&sa6, 0,
- &zeroin6_addr, 0, cmd, notify);
+ (void) in6_pcbnotify(&ripcbinfo, sa, 0, (struct sockaddr *)sa6_src,
+ 0, cmd, notify);
}
/*
* Tack on options user may have setup with control call.
*/
int
-rip6_output(m, so, dstsock, control)
- register struct mbuf *m;
- struct socket *so;
- struct sockaddr_in6 *dstsock;
- struct mbuf *control;
+rip6_output(
+ register struct mbuf *m,
+ struct socket *so,
+ struct sockaddr_in6 *dstsock,
+ struct mbuf *control)
{
struct in6_addr *dst;
struct ip6_hdr *ip6;
in6p = sotoin6pcb(so);
priv = 0;
-#if !defined(__APPLE__)
- {
- struct proc *p = current_proc(); /* XXX */
-
- if (p && !suser(p->p_ucred, &p->p_acflag))
+ if (so->so_uid == 0)
priv = 1;
- }
-#else
- if ((so->so_state & SS_PRIV) != 0)
- priv = 1;
-#endif
dst = &dstsock->sin6_addr;
if (control) {
if ((error = ip6_setpktoptions(control, &opt, priv, 0)) != 0)
* If the scope of the destination is link-local, embed the interface
* index in the address.
*
- * XXX advanced-api value overrides sin6_scope_id
+ * XXX advanced-api value overrides sin6_scope_id
*/
if (IN6_IS_SCOPE_LINKLOCAL(&ip6->ip6_dst)) {
struct in6_pktinfo *pi;
if (optp && (pi = optp->ip6po_pktinfo) && pi->ipi6_ifindex) {
ip6->ip6_dst.s6_addr16[1] = htons(pi->ipi6_ifindex);
oifp = ifindex2ifnet[pi->ipi6_ifindex];
- }
- else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
+ } else if (IN6_IS_ADDR_MULTICAST(&ip6->ip6_dst) &&
in6p->in6p_moptions &&
in6p->in6p_moptions->im6o_multicast_ifp) {
oifp = in6p->in6p_moptions->im6o_multicast_ifp;
ip6->ip6_dst.s6_addr16[1] = htons(oifp->if_index);
} else if (dstsock->sin6_scope_id) {
/* boundary check */
- if (dstsock->sin6_scope_id < 0
+ if (dstsock->sin6_scope_id < 0
|| if_index < dstsock->sin6_scope_id) {
error = ENXIO; /* XXX EINVAL? */
goto bad;
*/
{
struct in6_addr *in6a;
+ struct in6_addr storage;
if ((in6a = in6_selectsrc(dstsock, optp,
in6p->in6p_moptions,
&in6p->in6p_route,
&in6p->in6p_laddr,
- &error)) == 0) {
+ &storage, &error)) == 0) {
if (error == 0)
error = EADDRNOTAVAIL;
goto bad;
if (in6p->in6p_route.ro_rt)
oifp = ifindex2ifnet[in6p->in6p_route.ro_rt->rt_ifp->if_index];
}
-
- ip6->ip6_flow = in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK;
- ip6->ip6_vfc |= IPV6_VERSION;
-#if 0 /* ip6_plen will be filled in ip6_output. */
- ip6->ip6_plen = htons((u_short)plen);
-#endif
+ ip6->ip6_flow = (ip6->ip6_flow & ~IPV6_FLOWINFO_MASK) |
+ (in6p->in6p_flowinfo & IPV6_FLOWINFO_MASK);
+ ip6->ip6_vfc = (ip6->ip6_vfc & ~IPV6_VERSION_MASK) |
+ (IPV6_VERSION & IPV6_VERSION_MASK);
+ /* ip6_plen will be filled in ip6_output, so not fill it here. */
ip6->ip6_nxt = in6p->in6p_ip6_nxt;
ip6->ip6_hlim = in6_selecthlim(in6p, oifp);
int off;
u_int16_t *p;
-#define offsetof(type, member) ((size_t)(&((type *)0)->member)) /* XXX */
-
/* compute checksum */
if (so->so_proto->pr_protocol == IPPROTO_ICMPV6)
off = offsetof(struct icmp6_hdr, icmp6_cksum);
}
#if IPSEC
- ipsec_setsocket(m, so);
+ if (ipsec_bypass == 0 && ipsec_setsocket(m, so) != 0) {
+ error = ENOBUFS;
+ goto bad;
+ }
#endif /*IPSEC*/
- error = ip6_output(m, optp, &in6p->in6p_route, 0, in6p->in6p_moptions,
- &oifp);
+ if (in6p->in6p_route.ro_rt && in6p->in6p_route.ro_rt->generation_id != route_generation) {
+ rtfree(in6p->in6p_route.ro_rt);
+ in6p->in6p_route.ro_rt = (struct rtentry *)0;
+ }
+
+ error = ip6_output(m, optp, &in6p->in6p_route, 0,
+ in6p->in6p_moptions, &oifp, 0);
if (so->so_proto->pr_protocol == IPPROTO_ICMPV6) {
if (oifp)
icmp6_ifoutstat_inc(oifp, type, code);
icmp6stat.icp6s_outhist[type]++;
- }
+ } else
+ rip6stat.rip6s_opackets++;
goto freectl;
freectl:
if (optp == &opt && optp->ip6po_rthdr && optp->ip6po_route.ro_rt)
- RTFREE(optp->ip6po_route.ro_rt);
+ rtfree(optp->ip6po_route.ro_rt);
if (control) {
if (optp == &opt)
ip6_clearpktopts(optp, 0, -1);
return(error);
}
+static void
+load_ip6fw()
+{
+ ip6_fw_init();
+}
+
/*
* Raw IPv6 socket option processing.
*/
int
-rip6_ctloutput(so, sopt)
- struct socket *so;
- struct sockopt *sopt;
+rip6_ctloutput(
+ struct socket *so,
+ struct sockopt *sopt)
{
int error;
switch (sopt->sopt_dir) {
case SOPT_GET:
switch (sopt->sopt_name) {
+ case IPV6_FW_ADD:
+ case IPV6_FW_GET:
+ if (ip6_fw_ctl_ptr == 0)
+ load_ip6fw();
+ if (ip6_fw_ctl_ptr)
+ error = ip6_fw_ctl_ptr(sopt);
+ else
+ error = ENOPROTOOPT;
+ break;
+
case MRT6_INIT:
case MRT6_DONE:
case MRT6_ADD_MIF:
case SOPT_SET:
switch (sopt->sopt_name) {
+ case IPV6_FW_ADD:
+ case IPV6_FW_DEL:
+ case IPV6_FW_FLUSH:
+ case IPV6_FW_ZERO:
+ if (ip6_fw_ctl_ptr == 0)
+ load_ip6fw();
+ if (ip6_fw_ctl_ptr)
+ error = ip6_fw_ctl_ptr(sopt);
+ else
+ error = ENOPROTOOPT;
+ break;
+
case MRT6_INIT:
case MRT6_DONE:
case MRT6_ADD_MIF:
inp = sotoinpcb(so);
if (inp)
panic("rip6_attach");
- if (p && (error = suser(p->p_ucred, &p->p_acflag)) != 0)
+ if (p && (error = proc_suser(p)) != 0)
return error;
- if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
- error = soreserve(so, rip_sendspace, rip_recvspace);
- if (error)
- return error;
- }
+ error = soreserve(so, rip_sendspace, rip_recvspace);
+ if (error)
+ return error;
s = splnet();
error = in_pcballoc(so, &ripcbinfo, p);
splx(s);
inp->in6p_ip6_nxt = (long)proto;
inp->in6p_hops = -1; /* use kernel default */
inp->in6p_cksum = -1;
-#if IPSEC
- error = ipsec_init_policy(so, &inp->in6p_sp);
- if (error != 0) {
- in6_pcbdetach(inp);
- return (error);
- }
-#endif /*IPSEC*/
MALLOC(inp->in6p_icmp6filt, struct icmp6_filter *,
- sizeof(struct icmp6_filter), M_PCB, M_NOWAIT);
-
+ sizeof(struct icmp6_filter), M_PCB, M_WAITOK);
if (inp->in6p_icmp6filt == NULL)
- return(ENOBUFS);
-
+ return (ENOMEM);
ICMP6_FILTER_SETPASSALL(inp->in6p_icmp6filt);
return 0;
}
inp = sotoinpcb(so);
if (inp == 0)
panic("rip6_detach");
+ /* xxx: RSVP */
if (so == ip6_mrouter)
ip6_mrouter_done();
- /* xxx: RSVP */
if (inp->in6p_icmp6filt) {
FREE(inp->in6p_icmp6filt, M_PCB);
inp->in6p_icmp6filt = NULL;
if (nam->sa_len != sizeof(*addr))
return EINVAL;
- if (TAILQ_EMPTY(&ifnet) || addr->sin6_family != AF_INET6)
+ if (TAILQ_EMPTY(&ifnet_head) || addr->sin6_family != AF_INET6)
return EADDRNOTAVAIL;
+#if ENABLE_DEFAULT_SCOPE
+ if (addr->sin6_scope_id == 0) { /* not change if specified */
+ addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
+ }
+#endif
if (!IN6_IS_ADDR_UNSPECIFIED(&addr->sin6_addr) &&
(ia = ifa_ifwithaddr((struct sockaddr *)addr)) == 0)
return EADDRNOTAVAIL;
((struct in6_ifaddr *)ia)->ia6_flags &
(IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|
IN6_IFF_DETACHED|IN6_IFF_DEPRECATED)) {
+ if (ia) ifafree(ia);
return(EADDRNOTAVAIL);
}
+ ifafree(ia);
inp->in6p_laddr = addr->sin6_addr;
return 0;
}
struct inpcb *inp = sotoinpcb(so);
struct sockaddr_in6 *addr = (struct sockaddr_in6 *)nam;
struct in6_addr *in6a = NULL;
+ struct in6_addr storage;
int error = 0;
+#if ENABLE_DEFAULT_SCOPE
+ struct sockaddr_in6 tmp;
+#endif
if (nam->sa_len != sizeof(*addr))
return EINVAL;
- if (TAILQ_EMPTY(&ifnet))
+ if (TAILQ_EMPTY(&ifnet_head))
return EADDRNOTAVAIL;
if (addr->sin6_family != AF_INET6)
return EAFNOSUPPORT;
-
+#if ENABLE_DEFAULT_SCOPE
+ if (addr->sin6_scope_id == 0) { /* not change if specified */
+ /* avoid overwrites */
+ tmp = *addr;
+ addr = &tmp;
+ addr->sin6_scope_id = scope6_addr2default(&addr->sin6_addr);
+ }
+#endif
/* Source address selection. XXX: need pcblookup? */
in6a = in6_selectsrc(addr, inp->in6p_outputopts,
inp->in6p_moptions, &inp->in6p_route,
- &inp->in6p_laddr, &error);
+ &inp->in6p_laddr, &storage, &error);
if (in6a == NULL)
return (error ? error : EADDRNOTAVAIL);
inp->in6p_laddr = *in6a;
struct sockaddr_in6 tmp;
struct sockaddr_in6 *dst;
+ /* always copy sockaddr to avoid overwrites */
if (so->so_state & SS_ISCONNECTED) {
if (nam) {
m_freem(m);
m_freem(m);
return ENOTCONN;
}
- dst = (struct sockaddr_in6 *)nam;
+ tmp = *(struct sockaddr_in6 *)nam;
+ dst = &tmp;
}
+#if ENABLE_DEFAULT_SCOPE
+ if (dst->sin6_scope_id == 0) { /* not change if specified */
+ dst->sin6_scope_id = scope6_addr2default(&dst->sin6_addr);
+ }
+#endif
return rip6_output(m, so, dst, control);
}
rip6_abort, pru_accept_notsupp, rip6_attach, rip6_bind, rip6_connect,
pru_connect2_notsupp, in6_control, rip6_detach, rip6_disconnect,
pru_listen_notsupp, in6_setpeeraddr, pru_rcvd_notsupp,
- pru_rcvoob_notsupp, rip6_send, pru_sense_null, rip6_shutdown,
- in6_setsockaddr, sosend, soreceive, sopoll
+ pru_rcvoob_notsupp, rip6_send, pru_sense_null, rip6_shutdown,
+ in6_setsockaddr, sosend, soreceive, pru_sopoll_notsupp
};
projects / apple / xnu.git / blobdiff