Move files to match FreeBSD layout

1 files changed, 247 insertions, 0 deletions

diff --git a/freebsd/sys/net/if_disc.c b/freebsd/sys/net/if_disc.c
new file mode 100644
index 00000000..09918bb4
--- /dev/null
+++ b/freebsd/sys/net/if_disc.c
@@ -0,0 +1,247 @@
+#include <freebsd/machine/rtems-bsd-config.h>
+
+/*-
+ * Copyright (c) 1982, 1986, 1993
+ *	The Regents of the University of California.  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.
+ * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
+ *
+ *	From: @(#)if_loop.c	8.1 (Berkeley) 6/10/93
+ * $FreeBSD$
+ */
+
+/*
+ * Discard interface driver for protocol testing and timing.
+ * (Based on the loopback.)
+ */
+
+#include <freebsd/sys/param.h>
+#include <freebsd/sys/systm.h>
+#include <freebsd/sys/kernel.h>
+#include <freebsd/sys/malloc.h>
+#include <freebsd/sys/module.h>
+#include <freebsd/sys/mbuf.h>
+#include <freebsd/sys/socket.h>
+#include <freebsd/sys/sockio.h>
+
+#include <freebsd/net/if.h>
+#include <freebsd/net/if_clone.h>
+#include <freebsd/net/if_types.h>
+#include <freebsd/net/route.h>
+#include <freebsd/net/bpf.h>
+
+#include <freebsd/local/opt_inet.h>
+#include <freebsd/local/opt_inet6.h>
+
+#ifdef TINY_DSMTU
+#define	DSMTU	(1024+512)
+#else
+#define DSMTU	65532
+#endif
+
+#define DISCNAME	"disc"
+
+struct disc_softc {
+	struct ifnet *sc_ifp;
+};
+
+static int	discoutput(struct ifnet *, struct mbuf *,
+		    struct sockaddr *, struct route *);
+static void	discrtrequest(int, struct rtentry *, struct rt_addrinfo *);
+static int	discioctl(struct ifnet *, u_long, caddr_t);
+static int	disc_clone_create(struct if_clone *, int, caddr_t);
+static void	disc_clone_destroy(struct ifnet *);
+
+static MALLOC_DEFINE(M_DISC, DISCNAME, "Discard interface");
+
+IFC_SIMPLE_DECLARE(disc, 0);
+
+static int
+disc_clone_create(struct if_clone *ifc, int unit, caddr_t params)
+{
+	struct ifnet		*ifp;
+	struct disc_softc	*sc;
+
+	sc = malloc(sizeof(struct disc_softc), M_DISC, M_WAITOK | M_ZERO);
+	ifp = sc->sc_ifp = if_alloc(IFT_LOOP);
+	if (ifp == NULL) {
+		free(sc, M_DISC);
+		return (ENOSPC);
+	}
+
+	ifp->if_softc = sc;
+	if_initname(ifp, ifc->ifc_name, unit);
+	ifp->if_mtu = DSMTU;
+	/*
+	 * IFF_LOOPBACK should not be removed from disc's flags because
+	 * it controls what PF-specific routes are magically added when
+	 * a network address is assigned to the interface.  Things just
+	 * won't work as intended w/o such routes because the output
+	 * interface selection for a packet is totally route-driven.
+	 * A valid alternative to IFF_LOOPBACK can be IFF_BROADCAST or
+	 * IFF_POINTOPOINT, but it would result in different properties
+	 * of the interface.
+	 */
+	ifp->if_flags = IFF_LOOPBACK | IFF_MULTICAST;
+	ifp->if_drv_flags = IFF_DRV_RUNNING;
+	ifp->if_ioctl = discioctl;
+	ifp->if_output = discoutput;
+	ifp->if_hdrlen = 0;
+	ifp->if_addrlen = 0;
+	ifp->if_snd.ifq_maxlen = 20;
+	if_attach(ifp);
+	bpfattach(ifp, DLT_NULL, sizeof(u_int32_t));
+
+	return (0);
+}
+
+static void
+disc_clone_destroy(struct ifnet *ifp)
+{
+	struct disc_softc	*sc;
+
+	sc = ifp->if_softc;
+
+	bpfdetach(ifp);
+	if_detach(ifp);
+	if_free(ifp);
+
+	free(sc, M_DISC);
+}
+
+static int
+disc_modevent(module_t mod, int type, void *data)
+{
+
+	switch (type) {
+	case MOD_LOAD:
+		if_clone_attach(&disc_cloner);
+		break;
+	case MOD_UNLOAD:
+		if_clone_detach(&disc_cloner);
+		break;
+	default:
+		return (EOPNOTSUPP);
+	}
+	return (0);
+}
+
+static moduledata_t disc_mod = {
+	"if_disc",
+	disc_modevent,
+	NULL
+};
+
+DECLARE_MODULE(if_disc, disc_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
+
+static int
+discoutput(struct ifnet *ifp, struct mbuf *m, struct sockaddr *dst,
+    struct route *ro)
+{
+	u_int32_t af;
+
+	M_ASSERTPKTHDR(m);
+
+	/* BPF writes need to be handled specially. */
+	if (dst->sa_family == AF_UNSPEC) {
+		bcopy(dst->sa_data, &af, sizeof(af));
+		dst->sa_family = af;
+	}
+
+	if (bpf_peers_present(ifp->if_bpf)) {
+		u_int af = dst->sa_family;
+		bpf_mtap2(ifp->if_bpf, &af, sizeof(af), m);
+	}
+	m->m_pkthdr.rcvif = ifp;
+
+	ifp->if_opackets++;
+	ifp->if_obytes += m->m_pkthdr.len;
+
+	m_freem(m);
+	return (0);
+}
+
+/* ARGSUSED */
+static void
+discrtrequest(int cmd, struct rtentry *rt, struct rt_addrinfo *info)
+{
+	RT_LOCK_ASSERT(rt);
+	rt->rt_rmx.rmx_mtu = DSMTU;
+}
+
+/*
+ * Process an ioctl request.
+ */
+static int
+discioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
+{
+	struct ifaddr *ifa;
+	struct ifreq *ifr = (struct ifreq *)data;
+	int error = 0;
+
+	switch (cmd) {
+
+	case SIOCSIFADDR:
+		ifp->if_flags |= IFF_UP;
+		ifa = (struct ifaddr *)data;
+		if (ifa != 0)
+			ifa->ifa_rtrequest = discrtrequest;
+		/*
+		 * Everything else is done at a higher level.
+		 */
+		break;
+
+	case SIOCADDMULTI:
+	case SIOCDELMULTI:
+		if (ifr == 0) {
+			error = EAFNOSUPPORT;		/* XXX */
+			break;
+		}
+		switch (ifr->ifr_addr.sa_family) {
+
+#ifdef INET
+		case AF_INET:
+			break;
+#endif
+#ifdef INET6
+		case AF_INET6:
+			break;
+#endif
+
+		default:
+			error = EAFNOSUPPORT;
+			break;
+		}
+		break;
+
+	case SIOCSIFMTU:
+		ifp->if_mtu = ifr->ifr_mtu;
+		break;
+
+	default:
+		error = EINVAL;
+	}
+	return (error);
+}