Import MPLS (Multi Protocol Label Switching)

MPLS support partly based on the (abandoned?) AYAME project.
Basic LSR (Label Switch Router) functionality is present, but not fully
functional yet.

It is currently possible to insert entries in the LIB (Label Information Base)
with route(8), but setting the operation type is not supported yet.

Imported to allow more people to work on this in the coming weeks.

ok claudio@ laurent@ dlg@

1 files changed, 301 insertions, 0 deletions

diff --git a/sys/netmpls/mpls_raw.c b/sys/netmpls/mpls_raw.c
new file mode 100644
index 00000000000..b084f879dcc
--- /dev/null
+++ b/sys/netmpls/mpls_raw.c
@@ -0,0 +1,301 @@
+/*	$OpenBSD: mpls_raw.c,v 1.1 2008/04/23 11:00:35 norby Exp $	*/
+
+/*
+ * Copyright (C) 1999, 2000 and 2001 AYAME Project, 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:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 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 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * 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.
+ */
+
+#include <sys/param.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/errno.h>
+#include <sys/protosw.h>
+#include <sys/sockio.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/systm.h>
+#include <sys/sysctl.h>
+
+#include <net/if.h>
+#include <net/if_types.h>
+#include <net/route.h>
+
+#include <netmpls/mpls.h>
+
+#define MPLS_RAW_SNDQ	8192
+#define MPLS_RAW_RCVQ	8192
+
+u_long mpls_raw_sendspace = MPLS_RAW_SNDQ;
+u_long mpls_raw_recvspace = MPLS_RAW_RCVQ;
+
+int mpls_enable = 0;
+int mpls_defttl = 255;
+int mpls_inkloop = 16;
+int mpls_push_expnull_ip = 0;
+int mpls_push_expnull_ip6 = 0;
+int mpls_mapttl_ip = 1;
+int mpls_mapttl_ip6 = 0;
+
+int *mplsctl_vars[MPLSCTL_MAXID] = MPLSCTL_VARS;
+
+int	mpls_control(struct socket *, u_long, caddr_t, struct ifnet *);
+
+/*
+ * Generic MPLS control operations (ioctl's).
+ * Ifp is 0 if not an interface-specific ioctl.
+ */
+/* ARGSUSED */
+int
+mpls_control(struct socket *so, u_long cmd, caddr_t data, struct ifnet *ifp)
+{
+	return (EOPNOTSUPP);
+}
+
+int
+mpls_raw_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
+    struct mbuf *control)
+{
+	int error = 0;
+
+#ifdef MPLS_DEBUG
+	printf("mpls_raw_usrreq: called! (reqid=%d).\n", req);
+#endif	/* MPLS_DEBUG */
+
+	if (req == PRU_CONTROL)
+		return (mpls_control(so, (u_long)m, (caddr_t)nam,
+		    (struct ifnet *)control));
+
+	switch (req) {
+	case PRU_ATTACH:
+		if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
+			error = soreserve(so, mpls_raw_sendspace,
+				mpls_raw_recvspace);
+			if (error)
+				break;
+		}
+		break;
+
+	case PRU_DETACH:
+	case PRU_BIND:
+	case PRU_LISTEN:
+	case PRU_CONNECT:
+	case PRU_CONNECT2:
+	case PRU_DISCONNECT:
+	case PRU_SHUTDOWN:
+	case PRU_RCVD:
+	case PRU_SEND:
+	case PRU_SENSE:
+	case PRU_RCVOOB:
+	case PRU_SENDOOB:
+	case PRU_SOCKADDR:
+	case PRU_PEERADDR:
+		error = EOPNOTSUPP;
+		break;
+
+	default:
+		panic("rip_usrreq");
+	}
+
+	return (error);
+}
+
+int
+mpls_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen)
+{
+	if (name[0] >= MPLSCTL_MAXID)
+		return EOPNOTSUPP;
+
+	/* Almost all sysctl names at this level are terminal. */
+	if (namelen != 1 && name[0] != MPLSCTL_IFQUEUE)
+		return (ENOTDIR);
+
+	switch (name[0]) {
+	case MPLSCTL_IFQUEUE:
+		return (sysctl_ifq(name + 1, namelen - 1,
+		    oldp, oldlenp, newp, newlen, &mplsintrq));
+	default:
+		return sysctl_int_arr(mplsctl_vars, name, namelen,
+		    oldp, oldlenp, newp, newlen);
+	}
+}
+/*
+ * Copyright (C) 1999, 2000 and 2001 AYAME Project, 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:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 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 
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
+ * 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.
+ */
+
+/*
+ *
+ *	$Id: mpls_raw.c,v 1.1 2008/04/23 11:00:35 norby Exp $
+ */
+
+#include <sys/param.h>
+#include <sys/malloc.h>
+#include <sys/mbuf.h>
+#include <sys/errno.h>
+#include <sys/protosw.h>
+#include <sys/sockio.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/systm.h>
+#include <sys/sysctl.h>
+
+#include <net/if.h>
+#include <net/if_types.h>
+#include <net/route.h>
+
+#include <netmpls/mpls.h>
+#include <netmpls/mpls_var.h>
+
+#define MPLS_RAW_SNDQ	8192
+#define MPLS_RAW_RCVQ	8192
+
+u_long mpls_raw_sendspace = MPLS_RAW_SNDQ;
+u_long mpls_raw_recvspace = MPLS_RAW_RCVQ;
+
+int mpls_defttl = 255;
+int mpls_inkloop = 16;
+int mpls_push_expnull_ip = 0;
+int mpls_push_expnull_ip6 = 0;
+int mpls_mapttl_ip = 1;
+int mpls_mapttl_ip6 = 0;
+
+#define	MPLSCTL_VARS { \
+	0, \
+	&mpls_defttl, \
+	&mpls_inkloop, \
+	&mpls_push_expnull_ip, \
+	&mpls_push_expnull_ip6, \
+	&mpls_mapttl_ip, \
+	&mpls_mapttl_ip6, \
+}
+
+int
+mpls_raw_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
+    struct mbuf *control)
+{
+	int s;
+	int error = 0;
+
+#ifdef MPLS_DEBUG
+	printf("mpls_raw_usrreq: called! (reqid=%d).\n", req);
+#endif	/* MPLS_DEBUG */
+
+	if (req == PRU_CONTROL)
+		return (mpls_control(so, (long)m, (caddr_t)nam,
+		    (struct ifnet *)control));
+/* XXX norby
+	if (req == PRU_PURGEIF) {
+		mpls_purgeif((struct ifnet *)control);
+		return (0);
+	}
+*/
+	s = splsoftnet();
+
+	switch (req) {
+
+	case PRU_ATTACH:
+		if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
+			error = soreserve(so, mpls_raw_sendspace, mpls_raw_recvspace);
+			if (error)
+				break;
+		}
+		break;
+
+	case PRU_DETACH:
+	case PRU_BIND:
+	case PRU_LISTEN:
+	case PRU_CONNECT:
+	case PRU_CONNECT2:
+	case PRU_DISCONNECT:
+	case PRU_SHUTDOWN:
+	case PRU_RCVD:
+	case PRU_SEND:
+	case PRU_SENSE:
+	case PRU_RCVOOB:
+	case PRU_SENDOOB:
+	case PRU_SOCKADDR:
+	case PRU_PEERADDR:
+		error = EOPNOTSUPP;
+		break;
+
+	default:
+		panic("rip_usrreq");
+	}
+
+/* release: */
+	splx(s);
+	return (error);
+}
+
+static int *mpls_sysvars[] = MPLSCTL_VARS;
+
+int
+mpls_sysctl(int *name, u_int namelen, void *oldp, size_t *oldlenp, void *newp,
+    size_t newlen)
+{
+	if (name[0] >= MPLSCTL_MAXID)
+		return EOPNOTSUPP;
+	if (!mpls_sysvars[name[0]])
+		return EOPNOTSUPP;
+
+#ifdef MPLS_DEBUG
+	printf("mpls_sysctl\n");
+#endif	/* MPLS_DEBUG */
+
+	switch (name[0]) {
+	default:
+		return sysctl_int(oldp, oldlenp, newp, newlen,
+		    mpls_sysvars[name[0]]);
+	}
+}
+