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-rw-r--r--lib/libc/sys/getsockopt.213
-rw-r--r--lib/libc/sys/send.28
-rw-r--r--sys/compat/linux/linux_socket.c4
-rw-r--r--sys/kern/uipc_socket.c26
-rw-r--r--sys/netinet/in_pcb.c25
-rw-r--r--sys/netinet/ip_divert.c8
-rw-r--r--sys/netinet/ip_output.c40
-rw-r--r--sys/netinet/ip_var.h3
-rw-r--r--sys/netinet/raw_ip.c4
-rw-r--r--sys/netinet/tcp_output.c9
-rw-r--r--sys/netinet/udp_usrreq.c6
-rw-r--r--sys/netinet6/in6_src.c21
-rw-r--r--sys/netinet6/ip6_divert.c5
13 files changed, 123 insertions, 49 deletions
diff --git a/lib/libc/sys/getsockopt.2 b/lib/libc/sys/getsockopt.2
index cefce112404..556ae778d73 100644
--- a/lib/libc/sys/getsockopt.2
+++ b/lib/libc/sys/getsockopt.2
@@ -1,4 +1,4 @@
-.\" $OpenBSD: getsockopt.2,v 1.44 2014/03/27 13:27:28 mpi Exp $
+.\" $OpenBSD: getsockopt.2,v 1.45 2014/03/28 08:33:51 sthen Exp $
.\" $NetBSD: getsockopt.2,v 1.7 1995/02/27 12:33:29 cgd Exp $
.\"
.\" Copyright (c) 1983, 1991, 1993
@@ -30,7 +30,7 @@
.\"
.\" @(#)getsockopt.2 8.3 (Berkeley) 4/19/94
.\"
-.Dd $Mdocdate: March 27 2014 $
+.Dd $Mdocdate: March 28 2014 $
.Dt GETSOCKOPT 2
.Os
.Sh NAME
@@ -142,7 +142,7 @@ enables duplicate address and port bindings
.It Dv SO_KEEPALIVE
enables keep connections alive
.It Dv SO_DONTROUTE
-enables routing bypass; not supported
+enables routing bypass for outgoing messages
.It Dv SO_LINGER
linger on close if data present
.It Dv SO_BROADCAST
@@ -195,6 +195,11 @@ Should the connected party fail to respond to these messages, the connection
is considered broken and processes using the socket are notified via a
.Dv SIGPIPE
signal when attempting to send data.
+.Dv SO_DONTROUTE
+indicates that outgoing messages should
+bypass the standard routing facilities.
+Instead, messages are directed to the appropriate network interface
+according to the network portion of the destination address.
.Pp
.Dv SO_LINGER
controls the action taken when unsent messages
@@ -466,8 +471,6 @@ The argument
is a file, not a socket.
.It Bq Er ENOPROTOOPT
The option is unknown at the level indicated.
-.It Bq Er EOPNOTSUPP
-The option is unsupported.
.It Bq Er EFAULT
The address pointed to by
.Fa optval
diff --git a/lib/libc/sys/send.2 b/lib/libc/sys/send.2
index 2884dd658ed..53c30094a68 100644
--- a/lib/libc/sys/send.2
+++ b/lib/libc/sys/send.2
@@ -1,4 +1,4 @@
-.\" $OpenBSD: send.2,v 1.28 2014/03/27 13:27:28 mpi Exp $
+.\" $OpenBSD: send.2,v 1.29 2014/03/28 08:33:51 sthen Exp $
.\" $NetBSD: send.2,v 1.6 1996/01/15 01:17:18 thorpej Exp $
.\"
.\" Copyright (c) 1983, 1991, 1993
@@ -30,7 +30,7 @@
.\"
.\" @(#)send.2 8.2 (Berkeley) 2/21/94
.\"
-.Dd $Mdocdate: March 27 2014 $
+.Dd $Mdocdate: March 28 2014 $
.Dt SEND 2
.Os
.Sh NAME
@@ -99,7 +99,7 @@ parameter may include one or more of the following:
.It Dv MSG_OOB
process out-of-band data
.It Dv MSG_DONTROUTE
-bypass routing tables, silently ignored
+bypass routing, use direct interface
.It Dv MSG_NOSIGNAL
don't send
.Dv SIGPIPE
@@ -116,6 +116,8 @@ data on sockets that support this notion (e.g.,
the underlying protocol must also support
.Dq out-of-band
data.
+.Dv MSG_DONTROUTE
+is usually used only by diagnostic or routing programs.
.Dv MSG_NOSIGNAL
is used to request not to send the
.Dv SIGPIPE
diff --git a/sys/compat/linux/linux_socket.c b/sys/compat/linux/linux_socket.c
index 8df363627cf..be4a6dd24ef 100644
--- a/sys/compat/linux/linux_socket.c
+++ b/sys/compat/linux/linux_socket.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: linux_socket.c,v 1.50 2014/03/27 13:27:28 mpi Exp $ */
+/* $OpenBSD: linux_socket.c,v 1.51 2014/03/28 08:33:51 sthen Exp $ */
/* $NetBSD: linux_socket.c,v 1.14 1996/04/05 00:01:50 christos Exp $ */
/*
@@ -215,6 +215,8 @@ linux_to_bsd_msg_flags(int lflags)
flags |= MSG_OOB;
if (lflags & LINUX_MSG_PEEK)
flags |= MSG_PEEK;
+ if (lflags & LINUX_MSG_DONTROUTE)
+ flags |= MSG_DONTROUTE;
if (lflags & LINUX_MSG_DONTWAIT)
flags |= MSG_DONTWAIT;
if (lflags & LINUX_MSG_WAITALL)
diff --git a/sys/kern/uipc_socket.c b/sys/kern/uipc_socket.c
index 22b23951459..583c6514ed1 100644
--- a/sys/kern/uipc_socket.c
+++ b/sys/kern/uipc_socket.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: uipc_socket.c,v 1.124 2014/03/27 13:27:28 mpi Exp $ */
+/* $OpenBSD: uipc_socket.c,v 1.125 2014/03/28 08:33:51 sthen Exp $ */
/* $NetBSD: uipc_socket.c,v 1.21 1996/02/04 02:17:52 christos Exp $ */
/*
@@ -385,7 +385,7 @@ sosend(struct socket *so, struct mbuf *addr, struct uio *uio, struct mbuf *top,
struct mbuf *m;
long space, len, mlen, clen = 0;
quad_t resid;
- int error, s;
+ int error, s, dontroute;
int atomic = sosendallatonce(so) || top;
if (uio)
@@ -405,6 +405,9 @@ sosend(struct socket *so, struct mbuf *addr, struct uio *uio, struct mbuf *top,
error = EINVAL;
goto out;
}
+ dontroute =
+ (flags & MSG_DONTROUTE) && (so->so_options & SO_DONTROUTE) == 0 &&
+ (so->so_proto->pr_flags & PR_ATOMIC);
if (uio && uio->uio_procp)
uio->uio_procp->p_ru.ru_msgsnd++;
if (control) {
@@ -519,6 +522,8 @@ nopages:
break;
}
} while (space > 0 && atomic);
+ if (dontroute)
+ so->so_options |= SO_DONTROUTE;
s = splsoftnet(); /* XXX */
if (resid <= 0)
so->so_state &= ~SS_ISSENDING;
@@ -526,6 +531,8 @@ nopages:
(flags & MSG_OOB) ? PRU_SENDOOB : PRU_SEND,
top, addr, control, curproc);
splx(s);
+ if (dontroute)
+ so->so_options &= ~SO_DONTROUTE;
clen = 0;
control = 0;
top = 0;
@@ -1476,6 +1483,7 @@ sosetopt(struct socket *so, int level, int optname, struct mbuf *m0)
case SO_BINDANY:
case SO_DEBUG:
case SO_KEEPALIVE:
+ case SO_DONTROUTE:
case SO_USELOOPBACK:
case SO_BROADCAST:
case SO_REUSEADDR:
@@ -1492,15 +1500,6 @@ sosetopt(struct socket *so, int level, int optname, struct mbuf *m0)
so->so_options &= ~optname;
break;
- case SO_DONTROUTE:
- if (m == NULL || m->m_len < sizeof (int)) {
- error = EINVAL;
- goto bad;
- }
- if (*mtod(m, int *))
- error = EOPNOTSUPP;
- break;
-
case SO_SNDBUF:
case SO_RCVBUF:
case SO_SNDLOWAT:
@@ -1659,6 +1658,7 @@ sogetopt(struct socket *so, int level, int optname, struct mbuf **mp)
case SO_BINDANY:
case SO_USELOOPBACK:
+ case SO_DONTROUTE:
case SO_DEBUG:
case SO_KEEPALIVE:
case SO_REUSEADDR:
@@ -1669,10 +1669,6 @@ sogetopt(struct socket *so, int level, int optname, struct mbuf **mp)
*mtod(m, int *) = so->so_options & optname;
break;
- case SO_DONTROUTE:
- *mtod(m, int *) = 0;
- break;
-
case SO_TYPE:
*mtod(m, int *) = so->so_type;
break;
diff --git a/sys/netinet/in_pcb.c b/sys/netinet/in_pcb.c
index 28012438f98..db67fbaa95c 100644
--- a/sys/netinet/in_pcb.c
+++ b/sys/netinet/in_pcb.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: in_pcb.c,v 1.148 2014/03/27 13:27:28 mpi Exp $ */
+/* $OpenBSD: in_pcb.c,v 1.149 2014/03/28 08:33:51 sthen Exp $ */
/* $NetBSD: in_pcb.c,v 1.25 1996/02/13 23:41:53 christos Exp $ */
/*
@@ -817,12 +817,14 @@ in_selectsrc(struct sockaddr_in *sin, struct route *ro, int soopts,
* If route is known or can be allocated now,
* our src addr is taken from the i/f, else punt.
*/
- if (ro->ro_rt && ((ro->ro_rt->rt_flags & RTF_UP) == 0 ||
- (satosin(&ro->ro_dst)->sin_addr.s_addr != sin->sin_addr.s_addr))) {
+ if (ro->ro_rt && (!(ro->ro_rt->rt_flags & RTF_UP) ||
+ (satosin(&ro->ro_dst)->sin_addr.s_addr != sin->sin_addr.s_addr ||
+ soopts & SO_DONTROUTE))) {
RTFREE(ro->ro_rt);
ro->ro_rt = NULL;
}
- if ((ro->ro_rt == NULL || ro->ro_rt->rt_ifp == NULL)) {
+ if ((soopts & SO_DONTROUTE) == 0 && /*XXX*/
+ (ro->ro_rt == NULL || ro->ro_rt->rt_ifp == NULL)) {
/* No route yet, so try to acquire one */
ro->ro_dst.sa_family = AF_INET;
ro->ro_dst.sa_len = sizeof(struct sockaddr_in);
@@ -847,8 +849,19 @@ in_selectsrc(struct sockaddr_in *sin, struct route *ro, int soopts,
!(ro->ro_rt->rt_ifp->if_flags & IFF_LOOPBACK))
ia = ifatoia(ro->ro_rt->rt_ifa);
if (ia == 0) {
- *errorp = EADDRNOTAVAIL;
- return (NULL);
+ u_int16_t fport = sin->sin_port;
+
+ sin->sin_port = 0;
+ ia = ifatoia(ifa_ifwithdstaddr(sintosa(sin), rtableid));
+ if (ia == 0)
+ ia = ifatoia(ifa_ifwithnet(sintosa(sin), rtableid));
+ sin->sin_port = fport;
+ if (ia == 0)
+ ia = TAILQ_FIRST(&in_ifaddr);
+ if (ia == 0) {
+ *errorp = EADDRNOTAVAIL;
+ return NULL;
+ }
}
return (&ia->ia_addr);
}
diff --git a/sys/netinet/ip_divert.c b/sys/netinet/ip_divert.c
index 947f5205b2e..6ac2f0688e2 100644
--- a/sys/netinet/ip_divert.c
+++ b/sys/netinet/ip_divert.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ip_divert.c,v 1.17 2014/03/27 13:27:28 mpi Exp $ */
+/* $OpenBSD: ip_divert.c,v 1.18 2014/03/28 08:33:51 sthen Exp $ */
/*
* Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
@@ -180,8 +180,10 @@ divert_output(struct mbuf *m, ...)
schednetisr(NETISR_IP);
splx(s);
} else {
- error = ip_output(m, NULL, &inp->inp_route,
- IP_ALLOWBROADCAST | IP_RAWOUTPUT, NULL, NULL);
+ error = ip_output(m, (void *)NULL, &inp->inp_route,
+ ((so->so_options & SO_DONTROUTE) ? IP_ROUTETOIF : 0)
+ | IP_ALLOWBROADCAST | IP_RAWOUTPUT, (void *)NULL,
+ (void *)NULL);
if (error == EACCES) /* translate pf(4) error for userland */
error = EHOSTUNREACH;
}
diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c
index 6d490bc5700..03a6a782028 100644
--- a/sys/netinet/ip_output.c
+++ b/sys/netinet/ip_output.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ip_output.c,v 1.258 2014/03/27 13:27:28 mpi Exp $ */
+/* $OpenBSD: ip_output.c,v 1.259 2014/03/28 08:33:51 sthen Exp $ */
/* $NetBSD: ip_output.c,v 1.28 1996/02/13 23:43:07 christos Exp $ */
/*
@@ -194,7 +194,23 @@ ip_output(struct mbuf *m0, struct mbuf *opt, struct route *ro, int flags,
ro->ro_tableid = m->m_pkthdr.rdomain;
}
- if ((IN_MULTICAST(ip->ip_dst.s_addr) ||
+ /*
+ * If routing to interface only, short-circuit routing lookup.
+ */
+ if (flags & IP_ROUTETOIF) {
+ if ((ia = ifatoia(ifa_ifwithdstaddr(sintosa(dst),
+ m->m_pkthdr.rdomain))) == 0 &&
+ (ia = ifatoia(ifa_ifwithnet(sintosa(dst),
+ m->m_pkthdr.rdomain))) == 0) {
+ ipstat.ips_noroute++;
+ error = ENETUNREACH;
+ goto bad;
+ }
+
+ ifp = ia->ia_ifp;
+ mtu = ifp->if_mtu;
+ ip->ip_ttl = 1;
+ } else if ((IN_MULTICAST(ip->ip_dst.s_addr) ||
(ip->ip_dst.s_addr == INADDR_BROADCAST)) &&
imo != NULL && imo->imo_multicast_ifp != NULL) {
ifp = imo->imo_multicast_ifp;
@@ -344,7 +360,23 @@ reroute:
ro->ro_tableid = m->m_pkthdr.rdomain;
}
- if ((IN_MULTICAST(ip->ip_dst.s_addr) ||
+ /*
+ * If routing to interface only, short-circuit routing lookup.
+ */
+ if (flags & IP_ROUTETOIF) {
+ if ((ia = ifatoia(ifa_ifwithdstaddr(sintosa(dst),
+ m->m_pkthdr.rdomain))) == 0 &&
+ (ia = ifatoia(ifa_ifwithnet(sintosa(dst),
+ m->m_pkthdr.rdomain))) == 0) {
+ ipstat.ips_noroute++;
+ error = ENETUNREACH;
+ goto bad;
+ }
+
+ ifp = ia->ia_ifp;
+ mtu = ifp->if_mtu;
+ ip->ip_ttl = 1;
+ } else if ((IN_MULTICAST(ip->ip_dst.s_addr) ||
(ip->ip_dst.s_addr == INADDR_BROADCAST)) &&
imo != NULL && imo->imo_multicast_ifp != NULL) {
ifp = imo->imo_multicast_ifp;
@@ -720,7 +752,7 @@ sendit:
ipstat.ips_fragmented++;
done:
- if (ro == &iproute && ro->ro_rt)
+ if (ro == &iproute && (flags & IP_ROUTETOIF) == 0 && ro->ro_rt)
RTFREE(ro->ro_rt);
return (error);
bad:
diff --git a/sys/netinet/ip_var.h b/sys/netinet/ip_var.h
index 8abdd451a27..0d90a82969c 100644
--- a/sys/netinet/ip_var.h
+++ b/sys/netinet/ip_var.h
@@ -1,4 +1,4 @@
-/* $OpenBSD: ip_var.h,v 1.53 2014/03/27 13:27:28 mpi Exp $ */
+/* $OpenBSD: ip_var.h,v 1.54 2014/03/28 08:33:51 sthen Exp $ */
/* $NetBSD: ip_var.h,v 1.16 1996/02/13 23:43:20 christos Exp $ */
/*
@@ -140,6 +140,7 @@ struct ipq {
/* flags passed to ip_output as last parameter */
#define IP_FORWARDING 0x1 /* most of ip header exists */
#define IP_RAWOUTPUT 0x2 /* raw ip header exists */
+#define IP_ROUTETOIF SO_DONTROUTE /* bypass routing tables */
#define IP_ALLOWBROADCAST SO_BROADCAST /* can send broadcast packets */
#define IP_MTUDISC 0x0800 /* pmtu discovery, set DF */
#define IP_ROUTETOETHER 0x1000 /* ether addresses given */
diff --git a/sys/netinet/raw_ip.c b/sys/netinet/raw_ip.c
index 3b6cbe590f7..91d22a49987 100644
--- a/sys/netinet/raw_ip.c
+++ b/sys/netinet/raw_ip.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: raw_ip.c,v 1.68 2014/03/27 13:27:28 mpi Exp $ */
+/* $OpenBSD: raw_ip.c,v 1.69 2014/03/28 08:33:51 sthen Exp $ */
/* $NetBSD: raw_ip.c,v 1.25 1996/02/18 18:58:33 christos Exp $ */
/*
@@ -218,7 +218,7 @@ rip_output(struct mbuf *m, ...)
va_end(ap);
inp = sotoinpcb(so);
- flags = IP_ALLOWBROADCAST;
+ flags = (so->so_options & SO_DONTROUTE) | IP_ALLOWBROADCAST;
/*
* If the user handed us a complete IP packet, use it.
diff --git a/sys/netinet/tcp_output.c b/sys/netinet/tcp_output.c
index d0633905556..7eec9e2d4c6 100644
--- a/sys/netinet/tcp_output.c
+++ b/sys/netinet/tcp_output.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: tcp_output.c,v 1.102 2014/03/27 13:27:28 mpi Exp $ */
+/* $OpenBSD: tcp_output.c,v 1.103 2014/03/28 08:33:51 sthen Exp $ */
/* $NetBSD: tcp_output.c,v 1.16 1997/06/03 16:17:09 kml Exp $ */
/*
@@ -1076,7 +1076,9 @@ send:
}
error = ip_output(m, tp->t_inpcb->inp_options,
&tp->t_inpcb->inp_route,
- (ip_mtudisc ? IP_MTUDISC : 0), NULL, tp->t_inpcb);
+ (ip_mtudisc ? IP_MTUDISC : 0) |
+ (so->so_options & SO_DONTROUTE),
+ (void *)NULL, tp->t_inpcb);
break;
#endif /* INET */
#ifdef INET6
@@ -1097,7 +1099,8 @@ send:
}
error = ip6_output(m, tp->t_inpcb->inp_outputopts6,
&tp->t_inpcb->inp_route6,
- 0, NULL, NULL, tp->t_inpcb);
+ (so->so_options & SO_DONTROUTE), NULL, NULL,
+ tp->t_inpcb);
break;
#endif /* INET6 */
}
diff --git a/sys/netinet/udp_usrreq.c b/sys/netinet/udp_usrreq.c
index b85330eeec0..17f69795b40 100644
--- a/sys/netinet/udp_usrreq.c
+++ b/sys/netinet/udp_usrreq.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: udp_usrreq.c,v 1.175 2014/03/27 13:27:28 mpi Exp $ */
+/* $OpenBSD: udp_usrreq.c,v 1.176 2014/03/28 08:33:51 sthen Exp $ */
/* $NetBSD: udp_usrreq.c,v 1.28 1996/03/16 23:54:03 christos Exp $ */
/*
@@ -1090,8 +1090,8 @@ udp_output(struct mbuf *m, ...)
m->m_pkthdr.rdomain = inp->inp_rtableid;
error = ip_output(m, inp->inp_options, &inp->inp_route,
- (inp->inp_socket->so_options & SO_BROADCAST) | IP_IPSECFLOW,
- inp->inp_moptions, inp, ipsecflowinfo);
+ (inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST))
+ |IP_IPSECFLOW, inp->inp_moptions, inp, ipsecflowinfo);
if (error == EACCES) /* translate pf(4) error for userland */
error = EHOSTUNREACH;
diff --git a/sys/netinet6/in6_src.c b/sys/netinet6/in6_src.c
index 5ab4fab4bfe..127471aa920 100644
--- a/sys/netinet6/in6_src.c
+++ b/sys/netinet6/in6_src.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: in6_src.c,v 1.39 2014/03/27 13:27:28 mpi Exp $ */
+/* $OpenBSD: in6_src.c,v 1.40 2014/03/28 08:33:51 sthen Exp $ */
/* $KAME: in6_src.c,v 1.36 2001/02/06 04:08:17 itojun Exp $ */
/*
@@ -286,6 +286,25 @@ in6_selectsrc(struct sockaddr_in6 *dstsock, struct ip6_pktopts *opts,
if (ia6 == 0) /* xxx scope error ?*/
ia6 = ifatoia6(ro->ro_rt->rt_ifa);
}
+#if 0
+ /*
+ * xxx The followings are necessary? (kazu)
+ * I don't think so.
+ * It's for SO_DONTROUTE option in IPv4.(jinmei)
+ */
+ if (ia6 == 0) {
+ struct sockaddr_in6 sin6 = {sizeof(sin6), AF_INET6, 0};
+
+ sin6->sin6_addr = *dst;
+
+ ia6 = ifatoia6(ifa_ifwithdstaddr(sin6tosa(&sin6)));
+ if (ia6 == 0)
+ ia6 = ifatoia6(ifa_ifwithnet(sin6tosa(&sin6)));
+ if (ia6 == 0)
+ return (0);
+ return (&ia6->ia_addr.sin6_addr);
+ }
+#endif /* 0 */
if (ia6 == 0) {
*errorp = EHOSTUNREACH; /* no route */
return (0);
diff --git a/sys/netinet6/ip6_divert.c b/sys/netinet6/ip6_divert.c
index 3d4bdbfab63..46b555ae124 100644
--- a/sys/netinet6/ip6_divert.c
+++ b/sys/netinet6/ip6_divert.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: ip6_divert.c,v 1.18 2014/03/27 13:27:28 mpi Exp $ */
+/* $OpenBSD: ip6_divert.c,v 1.19 2014/03/28 08:33:51 sthen Exp $ */
/*
* Copyright (c) 2009 Michele Marchetto <michele@openbsd.org>
@@ -180,7 +180,8 @@ divert6_output(struct mbuf *m, ...)
splx(s);
} else {
error = ip6_output(m, NULL, &inp->inp_route6,
- IP_ALLOWBROADCAST | IP_RAWOUTPUT, NULL, NULL, NULL);
+ ((so->so_options & SO_DONTROUTE) ? IP_ROUTETOIF : 0)
+ | IP_ALLOWBROADCAST | IP_RAWOUTPUT, NULL, NULL, NULL);
}
div6stat.divs_opackets++;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 18:58:46 +0000