395 lines
9.8 KiB
C
395 lines
9.8 KiB
C
/* $NetBSD: mpls_proto.c,v 1.33 2022/09/03 02:24:59 thorpej 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 1.33 2022/09/03 02:24:59 thorpej Exp $");
|
|
|
|
#ifdef _KERNEL_OPT
|
|
#include "opt_inet.h"
|
|
#include "opt_mbuftrace.h"
|
|
#endif
|
|
|
|
#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>
|
|
|
|
#define MPLS_MAXQLEN 256
|
|
pktqueue_t * mpls_pktq __read_mostly;
|
|
|
|
static int mpls_attach(struct socket *, int);
|
|
static void sysctl_net_mpls_setup(struct sysctllog **);
|
|
|
|
#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_frame_accept = 0;
|
|
int mpls_mapprec_inet = 1;
|
|
int mpls_mapclass_inet6 = 1;
|
|
int mpls_rfc4182 = 1;
|
|
|
|
void mpls_init(void)
|
|
{
|
|
#ifdef MBUFTRACE
|
|
MOWNER_ATTACH(&mpls_owner);
|
|
#endif
|
|
mpls_pktq = pktq_create(MPLS_MAXQLEN, mplsintr, NULL);
|
|
KASSERT(mpls_pktq != NULL);
|
|
|
|
sysctl_net_mpls_setup(NULL);
|
|
}
|
|
|
|
static int
|
|
mpls_attach(struct socket *so, int proto)
|
|
{
|
|
int error = EOPNOTSUPP;
|
|
|
|
sosetlock(so);
|
|
if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
|
|
error = soreserve(so, 8192, 8192);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
static void
|
|
mpls_detach(struct socket *so)
|
|
{
|
|
}
|
|
|
|
static int
|
|
mpls_accept(struct socket *so, struct sockaddr *nam)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_bind(struct socket *so, struct sockaddr *nam, struct lwp *l)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_listen(struct socket *so, struct lwp *l)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_connect(struct socket *so, struct sockaddr *nam, struct lwp *l)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_connect2(struct socket *so, struct socket *so2)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_disconnect(struct socket *so)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_shutdown(struct socket *so)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_abort(struct socket *so)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
|
|
{
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_stat(struct socket *so, struct stat *ub)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_peeraddr(struct socket *so, struct sockaddr *nam)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_sockaddr(struct socket *so, struct sockaddr *nam)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_rcvd(struct socket *so, int flags, struct lwp *l)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_recvoob(struct socket *so, struct mbuf *m, int flags)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_send(struct socket *so, struct mbuf *m, struct sockaddr *nam,
|
|
struct mbuf *control, struct lwp *l)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
|
|
{
|
|
KASSERT(solocked(so));
|
|
|
|
m_freem(m);
|
|
m_freem(control);
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
mpls_purgeif(struct socket *so, struct ifnet *ifp)
|
|
{
|
|
|
|
return EOPNOTSUPP;
|
|
}
|
|
|
|
/*
|
|
* Sysctl for MPLS variables.
|
|
*/
|
|
static void
|
|
sysctl_net_mpls_setup(struct sysctllog **clog)
|
|
{
|
|
const struct sysctlnode *mpls_node;
|
|
|
|
sysctl_createv(clog, 0, NULL, &mpls_node,
|
|
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_frame_accept, 0,
|
|
CTL_NET, PF_MPLS, CTL_CREATE, CTL_EOL);
|
|
|
|
pktq_sysctl_setup(mpls_pktq, clog, mpls_node, CTL_CREATE);
|
|
|
|
sysctl_createv(clog, 0, NULL, NULL,
|
|
CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
|
|
CTLTYPE_INT, "rfc4182",
|
|
SYSCTL_DESCR("RFC 4182 conformance"),
|
|
NULL, 0, &mpls_rfc4182, 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
|
|
}
|
|
|
|
DOMAIN_DEFINE(mplsdomain);
|
|
|
|
PR_WRAP_USRREQS(mpls)
|
|
#define mpls_attach mpls_attach_wrapper
|
|
#define mpls_detach mpls_detach_wrapper
|
|
#define mpls_accept mpls_accept_wrapper
|
|
#define mpls_bind mpls_bind_wrapper
|
|
#define mpls_listen mpls_listen_wrapper
|
|
#define mpls_connect mpls_connect_wrapper
|
|
#define mpls_connect2 mpls_connect2_wrapper
|
|
#define mpls_disconnect mpls_disconnect_wrapper
|
|
#define mpls_shutdown mpls_shutdown_wrapper
|
|
#define mpls_abort mpls_abort_wrapper
|
|
#define mpls_ioctl mpls_ioctl_wrapper
|
|
#define mpls_stat mpls_stat_wrapper
|
|
#define mpls_peeraddr mpls_peeraddr_wrapper
|
|
#define mpls_sockaddr mpls_sockaddr_wrapper
|
|
#define mpls_rcvd mpls_rcvd_wrapper
|
|
#define mpls_recvoob mpls_recvoob_wrapper
|
|
#define mpls_send mpls_send_wrapper
|
|
#define mpls_sendoob mpls_sendoob_wrapper
|
|
#define mpls_purgeif mpls_purgeif_wrapper
|
|
|
|
static const struct pr_usrreqs mpls_usrreqs = {
|
|
.pr_attach = mpls_attach,
|
|
.pr_detach = mpls_detach,
|
|
.pr_accept = mpls_accept,
|
|
.pr_bind = mpls_bind,
|
|
.pr_listen = mpls_listen,
|
|
.pr_connect = mpls_connect,
|
|
.pr_connect2 = mpls_connect2,
|
|
.pr_disconnect = mpls_disconnect,
|
|
.pr_shutdown = mpls_shutdown,
|
|
.pr_abort = mpls_abort,
|
|
.pr_ioctl = mpls_ioctl,
|
|
.pr_stat = mpls_stat,
|
|
.pr_peeraddr = mpls_peeraddr,
|
|
.pr_sockaddr = mpls_sockaddr,
|
|
.pr_rcvd = mpls_rcvd,
|
|
.pr_recvoob = mpls_recvoob,
|
|
.pr_send = mpls_send,
|
|
.pr_sendoob = mpls_sendoob,
|
|
.pr_purgeif = mpls_purgeif,
|
|
};
|
|
|
|
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_usrreqs = &mpls_usrreqs,
|
|
},
|
|
{
|
|
.pr_type = SOCK_RAW,
|
|
.pr_domain = &mplsdomain,
|
|
.pr_flags = PR_ATOMIC | PR_ADDR,
|
|
.pr_usrreqs = &mpls_usrreqs,
|
|
},
|
|
};
|
|
|
|
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 = rt_inithead,
|
|
.dom_rtoffset = offsetof(struct sockaddr_mpls, smpls_addr) << 3,
|
|
.dom_maxrtkey = sizeof(union mpls_shim),
|
|
.dom_ifattach = NULL,
|
|
.dom_ifdetach = 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),
|
|
};
|