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-rw-r--r--sys/net/raw_usrreq.c300
1 files changed, 300 insertions, 0 deletions
diff --git a/sys/net/raw_usrreq.c b/sys/net/raw_usrreq.c
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+/*
+ * Copyright (c) 1980, 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 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.
+ *
+ * @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/mbuf.h>
+#include <sys/proc.h>
+#include <sys/protosw.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+
+#include <net/raw_cb.h>
+
+/*
+ * Initialize raw connection block q.
+ */
+void
+raw_init()
+{
+ LIST_INIT(&rawcb_list);
+}
+
+
+/*
+ * Raw protocol input routine. Find the socket
+ * associated with the packet(s) and move them over. If
+ * nothing exists for this packet, drop it.
+ */
+/*
+ * Raw protocol interface.
+ */
+void
+raw_input(m0, proto, src, dst)
+ struct mbuf *m0;
+ register struct sockproto *proto;
+ struct sockaddr *src, *dst;
+{
+ register struct rawcb *rp;
+ register struct mbuf *m = m0;
+ register int sockets = 0;
+ struct socket *last;
+
+ last = 0;
+ LIST_FOREACH(rp, &rawcb_list, list) {
+ if (rp->rcb_proto.sp_family != proto->sp_family)
+ continue;
+ if (rp->rcb_proto.sp_protocol &&
+ rp->rcb_proto.sp_protocol != proto->sp_protocol)
+ continue;
+ /*
+ * We assume the lower level routines have
+ * placed the address in a canonical format
+ * suitable for a structure comparison.
+ *
+ * Note that if the lengths are not the same
+ * the comparison will fail at the first byte.
+ */
+#define equal(a1, a2) \
+ (bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
+ if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
+ continue;
+ if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
+ continue;
+ if (last) {
+ struct mbuf *n;
+ n = m_copy(m, 0, (int)M_COPYALL);
+ if (n) {
+ if (sbappendaddr(&last->so_rcv, src,
+ n, (struct mbuf *)0) == 0)
+ /* should notify about lost packet */
+ m_freem(n);
+ else {
+ sorwakeup(last);
+ sockets++;
+ }
+ }
+ }
+ last = rp->rcb_socket;
+ }
+ if (last) {
+ if (sbappendaddr(&last->so_rcv, src,
+ m, (struct mbuf *)0) == 0)
+ m_freem(m);
+ else {
+ sorwakeup(last);
+ sockets++;
+ }
+ } else
+ m_freem(m);
+}
+
+/*ARGSUSED*/
+void
+raw_ctlinput(cmd, arg, dummy)
+ int cmd;
+ struct sockaddr *arg;
+ void *dummy;
+{
+
+ if (cmd < 0 || cmd > PRC_NCMDS)
+ return;
+ /* INCOMPLETE */
+}
+
+static int
+raw_uabort(struct socket *so)
+{
+ struct rawcb *rp = sotorawcb(so);
+
+ if (rp == 0)
+ return EINVAL;
+ raw_disconnect(rp);
+ sofree(so);
+ soisdisconnected(so);
+ return 0;
+}
+
+/* pru_accept is EOPNOTSUPP */
+
+static int
+raw_uattach(struct socket *so, int proto, struct proc *p)
+{
+ struct rawcb *rp = sotorawcb(so);
+ int error;
+
+ if (rp == 0)
+ return EINVAL;
+ if (p && (error = suser(p)) != 0)
+ return error;
+ return raw_attach(so, proto);
+}
+
+static int
+raw_ubind(struct socket *so, struct sockaddr *nam, struct proc *p)
+{
+ return EINVAL;
+}
+
+static int
+raw_uconnect(struct socket *so, struct sockaddr *nam, struct proc *p)
+{
+ return EINVAL;
+}
+
+/* pru_connect2 is EOPNOTSUPP */
+/* pru_control is EOPNOTSUPP */
+
+static int
+raw_udetach(struct socket *so)
+{
+ struct rawcb *rp = sotorawcb(so);
+
+ if (rp == 0)
+ return EINVAL;
+
+ raw_detach(rp);
+ return 0;
+}
+
+static int
+raw_udisconnect(struct socket *so)
+{
+ struct rawcb *rp = sotorawcb(so);
+
+ if (rp == 0)
+ return EINVAL;
+ if (rp->rcb_faddr == 0) {
+ return ENOTCONN;
+ }
+ raw_disconnect(rp);
+ soisdisconnected(so);
+ return 0;
+}
+
+/* pru_listen is EOPNOTSUPP */
+
+static int
+raw_upeeraddr(struct socket *so, struct sockaddr **nam)
+{
+ struct rawcb *rp = sotorawcb(so);
+
+ if (rp == 0)
+ return EINVAL;
+ if (rp->rcb_faddr == 0) {
+ return ENOTCONN;
+ }
+ *nam = dup_sockaddr(rp->rcb_faddr, 1);
+ return 0;
+}
+
+/* pru_rcvd is EOPNOTSUPP */
+/* pru_rcvoob is EOPNOTSUPP */
+
+static int
+raw_usend(struct socket *so, int flags, struct mbuf *m,
+ struct sockaddr *nam, struct mbuf *control, struct proc *p)
+{
+ int error;
+ struct rawcb *rp = sotorawcb(so);
+
+ if (rp == 0) {
+ error = EINVAL;
+ goto release;
+ }
+
+ if (flags & PRUS_OOB) {
+ error = EOPNOTSUPP;
+ goto release;
+ }
+
+ if (control && control->m_len) {
+ error = EOPNOTSUPP;
+ goto release;
+ }
+ if (nam) {
+ if (rp->rcb_faddr) {
+ error = EISCONN;
+ goto release;
+ }
+ rp->rcb_faddr = nam;
+ } else if (rp->rcb_faddr == 0) {
+ error = ENOTCONN;
+ goto release;
+ }
+ error = (*so->so_proto->pr_output)(m, so);
+ m = NULL;
+ if (nam)
+ rp->rcb_faddr = 0;
+release:
+ if (m != NULL)
+ m_freem(m);
+ return (error);
+}
+
+/* pru_sense is null */
+
+static int
+raw_ushutdown(struct socket *so)
+{
+ struct rawcb *rp = sotorawcb(so);
+
+ if (rp == 0)
+ return EINVAL;
+ socantsendmore(so);
+ return 0;
+}
+
+static int
+raw_usockaddr(struct socket *so, struct sockaddr **nam)
+{
+ struct rawcb *rp = sotorawcb(so);
+
+ if (rp == 0)
+ return EINVAL;
+ if (rp->rcb_laddr == 0)
+ return EINVAL;
+ *nam = dup_sockaddr(rp->rcb_laddr, 1);
+ return 0;
+}
+
+struct pr_usrreqs raw_usrreqs = {
+ raw_uabort, pru_accept_notsupp, raw_uattach, raw_ubind, raw_uconnect,
+ pru_connect2_notsupp, pru_control_notsupp, raw_udetach,
+ raw_udisconnect, pru_listen_notsupp, raw_upeeraddr, pru_rcvd_notsupp,
+ pru_rcvoob_notsupp, raw_usend, pru_sense_null, raw_ushutdown,
+ raw_usockaddr, sosend, soreceive, sopoll
+};
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