210 lines
6.7 KiB
C
210 lines
6.7 KiB
C
/* $NetBSD: mpls_proto.c,v 1.1 2010/06/26 14:24:29 kefren Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2010 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Mihai Chelaru <kefren@NetBSD.org>
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: mpls_proto.c,v 1.1 2010/06/26 14:24:29 kefren Exp $");
|
|
|
|
#include "opt_inet.h"
|
|
#include "opt_mbuftrace.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/protosw.h>
|
|
#include <sys/domain.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/sysctl.h>
|
|
|
|
#include <net/route.h>
|
|
|
|
#include <netmpls/mpls.h>
|
|
#include <netmpls/mpls_var.h>
|
|
|
|
struct ifqueue mplsintrq;
|
|
|
|
static int mpls_usrreq(struct socket *, int, struct mbuf *, struct mbuf *,
|
|
struct mbuf *, struct lwp *);
|
|
|
|
#ifdef MBUFTRACE
|
|
struct mowner mpls_owner = MOWNER_INIT("MPLS", "");
|
|
#endif
|
|
|
|
int mpls_defttl = 255;
|
|
int mpls_mapttl_inet = 1;
|
|
int mpls_mapttl_inet6 = 1;
|
|
int mpls_icmp_respond = 0;
|
|
int mpls_forwarding = 0;
|
|
int mpls_accept = 0;
|
|
int mpls_mapprec_inet = 1;
|
|
int mpls_mapclass_inet6 = 1;
|
|
|
|
void mpls_init()
|
|
{
|
|
#ifdef MBUFTRACE
|
|
MOWNER_ATTACH(&mpls_owner);
|
|
#endif
|
|
memset(&mplsintrq, 0, sizeof(mplsintrq));
|
|
mplsintrq.ifq_maxlen = 256;
|
|
}
|
|
|
|
DOMAIN_DEFINE(mplsdomain);
|
|
|
|
const struct protosw mplssw[] = {
|
|
{ .pr_domain = &mplsdomain,
|
|
.pr_init = mpls_init,
|
|
},
|
|
{
|
|
.pr_type = SOCK_DGRAM,
|
|
.pr_domain = &mplsdomain,
|
|
.pr_flags = PR_ATOMIC | PR_ADDR,
|
|
.pr_usrreq = mpls_usrreq,
|
|
},
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &mplsdomain,
|
|
.pr_flags = PR_ATOMIC | PR_ADDR,
|
|
.pr_usrreq = mpls_usrreq,
|
|
},
|
|
};
|
|
|
|
struct domain mplsdomain = {
|
|
.dom_family = PF_MPLS,
|
|
.dom_name = "MPLS",
|
|
.dom_init = NULL,
|
|
.dom_externalize = NULL,
|
|
.dom_dispose = NULL,
|
|
.dom_protosw = mplssw,
|
|
.dom_protoswNPROTOSW = &mplssw[__arraycount(mplssw)],
|
|
.dom_rtattach = rn_inithead,
|
|
.dom_rtoffset = offsetof(struct sockaddr_mpls, smpls_addr) << 3,
|
|
.dom_maxrtkey = sizeof(union mpls_shim),
|
|
.dom_ifattach = NULL,
|
|
.dom_ifdetach = NULL,
|
|
.dom_ifqueues = { &mplsintrq, NULL },
|
|
.dom_link = { NULL },
|
|
.dom_mowner = MOWNER_INIT("MPLS", ""),
|
|
.dom_sa_cmpofs = offsetof(struct sockaddr_mpls, smpls_addr),
|
|
.dom_sa_cmplen = sizeof(union mpls_shim),
|
|
.dom_rtcache = LIST_HEAD_INITIALIZER(mplsdomain.dom_rtcache)
|
|
};
|
|
|
|
static int
|
|
mpls_usrreq(struct socket *so, int req, struct mbuf *m,
|
|
struct mbuf *nam, struct mbuf *control, struct lwp *l)
|
|
{
|
|
int error = EOPNOTSUPP;
|
|
|
|
if ((req == PRU_ATTACH) &&
|
|
(so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0)) {
|
|
int s = splsoftnet();
|
|
error = soreserve(so, 8192, 8192);
|
|
splx(s);
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
/*
|
|
* Sysctl for MPLS variables.
|
|
*/
|
|
SYSCTL_SETUP(sysctl_net_mpls_setup, "sysctl net.mpls subtree setup")
|
|
{
|
|
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT,
|
|
CTLTYPE_NODE, "net", NULL,
|
|
NULL, 0, NULL, 0,
|
|
CTL_NET, CTL_EOL);
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT,
|
|
CTLTYPE_NODE, "mpls", NULL,
|
|
NULL, 0, NULL, 0,
|
|
CTL_NET, PF_MPLS, CTL_EOL);
|
|
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
|
|
CTLTYPE_INT, "ttl",
|
|
SYSCTL_DESCR("Default TTL"),
|
|
NULL, 0, &mpls_defttl, 0,
|
|
CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL);
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
|
|
CTLTYPE_INT, "forwarding",
|
|
SYSCTL_DESCR("MPLS forwarding"),
|
|
NULL, 0, &mpls_forwarding, 0,
|
|
CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL);
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
|
|
CTLTYPE_INT, "accept",
|
|
SYSCTL_DESCR("Accept MPLS Frames"),
|
|
NULL, 0, &mpls_accept, 0,
|
|
CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL);
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
|
|
CTLTYPE_INT, "ifq_len",
|
|
SYSCTL_DESCR("MPLS queue length"),
|
|
NULL, 0, &mplsintrq.ifq_maxlen, 0,
|
|
CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL);
|
|
#ifdef INET
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
|
|
CTLTYPE_INT, "inet_mapttl",
|
|
SYSCTL_DESCR("Map IP TTL"),
|
|
NULL, 0, &mpls_mapttl_inet, 0,
|
|
CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL);
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
|
|
CTLTYPE_INT, "inet_map_prec",
|
|
SYSCTL_DESCR("Map IP Prec"),
|
|
NULL, 0, &mpls_mapprec_inet, 0,
|
|
CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL);
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
|
|
CTLTYPE_INT, "icmp_respond",
|
|
SYSCTL_DESCR("Emit ICMP packets on errors"),
|
|
NULL, 0, &mpls_icmp_respond, 0,
|
|
CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL);
|
|
#endif
|
|
#ifdef INET6
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
|
|
CTLTYPE_INT, "inet6_mapttl",
|
|
SYSCTL_DESCR("Map IP6 TTL"),
|
|
NULL, 0, &mpls_mapttl_inet6, 0,
|
|
CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL);
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
|
|
CTLTYPE_INT, "inet6_map_prec",
|
|
SYSCTL_DESCR("Map IP6 class"),
|
|
NULL, 0, &mpls_mapclass_inet6, 0,
|
|
CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL);
|
|
#endif
|
|
}
|