/*- * 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 MTX_SYSINIT(rawcb_mtx, &rawcb_mtx, "rawcb", MTX_DEF); /* * 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; struct socket *last; last = 0; mtx_lock(&rawcb_mtx); 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); } } } 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(cmd, arg, dummy) int cmd; struct sockaddr *arg; void *dummy; { if (cmd < 0 || cmd >= PRC_NCMDS) return; /* INCOMPLETE */ } static void raw_uabort(struct socket *so) { struct rawcb *rp = sotorawcb(so); KASSERT(rp != NULL, ("raw_uabort: rp == NULL")); raw_disconnect(rp); soisdisconnected(so); } /* pru_accept is EOPNOTSUPP */ static int raw_uattach(struct socket *so, int proto, struct thread *td) { int error; KASSERT(sotorawcb(so) == NULL, ("raw_uattach: rp != NULL")); if (td && (error = suser(td)) != 0) 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) { struct rawcb *rp = sotorawcb(so); KASSERT(rp != NULL, ("raw_udisconnect: rp == NULL")); 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); KASSERT(rp != NULL, ("raw_upeeraddr: rp == NULL")); if (rp->rcb_faddr == 0) { return ENOTCONN; } *nam = sodupsockaddr(rp->rcb_faddr, M_WAITOK); 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 thread *td) { int error; struct rawcb *rp = sotorawcb(so); KASSERT(rp != NULL, ("raw_usend: rp == NULL")); 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) { KASSERT(sotorawcb(so) != NULL, ("raw_ushutdown: rp == NULL")); socantsendmore(so); return 0; } static int raw_usockaddr(struct socket *so, struct sockaddr **nam) { struct rawcb *rp = sotorawcb(so); KASSERT(rp != NULL, ("raw_usockaddr: rp == NULL")); if (rp->rcb_laddr == 0) return EINVAL; *nam = sodupsockaddr(rp->rcb_laddr, M_WAITOK); return 0; } 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, };