/*- * 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. * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include MTX_SYSINIT(rawcb_mtx, &rawcb_mtx, "rawcb", MTX_DEF); /* * Initialize raw connection block q. */ void raw_init(void) { LIST_INIT(&V_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(struct mbuf *m0, struct sockproto *proto, struct sockaddr *src) { return (raw_input_ext(m0, proto, src, NULL)); } void raw_input_ext(struct mbuf *m0, struct sockproto *proto, struct sockaddr *src, raw_input_cb_fn cb) { struct rawcb *rp; struct mbuf *m = m0; struct socket *last; last = 0; mtx_lock(&rawcb_mtx); LIST_FOREACH(rp, &V_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; if (cb != NULL && (*cb)(m, proto, src, rp) != 0) 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); } } last = rp->rcb_socket; } if (last) { if (sbappendaddr(&last->so_rcv, src, m, (struct mbuf *)0) == 0) m_freem(m); else sorwakeup(last); } else m_freem(m); mtx_unlock(&rawcb_mtx); } /*ARGSUSED*/ void raw_ctlinput(int cmd, struct sockaddr *arg, void *dummy) { if (cmd < 0 || cmd >= PRC_NCMDS) return; /* INCOMPLETE */ } static void raw_uabort(struct socket *so) { KASSERT(sotorawcb(so) != NULL, ("raw_uabort: rp == NULL")); soisdisconnected(so); } static void raw_uclose(struct socket *so) { KASSERT(sotorawcb(so) != NULL, ("raw_uabort: rp == NULL")); soisdisconnected(so); } /* pru_accept is EOPNOTSUPP */ static int raw_uattach(struct socket *so, int proto, struct thread *td) { int error; /* * Implementors of raw sockets will already have allocated the PCB, * so it must be non-NULL here. */ KASSERT(sotorawcb(so) != NULL, ("raw_uattach: so_pcb == NULL")); if (td != NULL) { error = priv_check(td, PRIV_NET_RAW); if (error) return (error); } return (raw_attach(so, proto)); } static int raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td) { return (EINVAL); } static int raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td) { return (EINVAL); } /* pru_connect2 is EOPNOTSUPP */ /* pru_control is EOPNOTSUPP */ static void raw_udetach(struct socket *so) { struct rawcb *rp = sotorawcb(so); KASSERT(rp != NULL, ("raw_udetach: rp == NULL")); raw_detach(rp); } static int raw_udisconnect(struct socket *so) { KASSERT(sotorawcb(so) != NULL, ("raw_udisconnect: rp == NULL")); return (ENOTCONN); } /* pru_listen is EOPNOTSUPP */ static int raw_upeeraddr(struct socket *so, struct sockaddr **nam) { KASSERT(sotorawcb(so) != NULL, ("raw_upeeraddr: rp == NULL")); return (ENOTCONN); } /* 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 thread *td) { KASSERT(sotorawcb(so) != NULL, ("raw_usend: rp == NULL")); if ((flags & PRUS_OOB) || (control && control->m_len)) { /* XXXRW: Should control also be freed here? */ if (m != NULL) m_freem(m); return (EOPNOTSUPP); } /* * For historical (bad?) reasons, we effectively ignore the address * argument to sendto(2). Perhaps we should return an error instead? */ return ((*so->so_proto->pr_output)(m, so)); } /* pru_sense is null */ static int raw_ushutdown(struct socket *so) { KASSERT(sotorawcb(so) != NULL, ("raw_ushutdown: rp == NULL")); socantsendmore(so); return (0); } static int raw_usockaddr(struct socket *so, struct sockaddr **nam) { KASSERT(sotorawcb(so) != NULL, ("raw_usockaddr: rp == NULL")); return (EINVAL); } struct pr_usrreqs raw_usrreqs = { .pru_abort = raw_uabort, .pru_attach = raw_uattach, .pru_bind = raw_ubind, .pru_connect = raw_uconnect, .pru_detach = raw_udetach, .pru_disconnect = raw_udisconnect, .pru_peeraddr = raw_upeeraddr, .pru_send = raw_usend, .pru_shutdown = raw_ushutdown, .pru_sockaddr = raw_usockaddr, .pru_close = raw_uclose, };