1/*- 2 * Copyright (c) 1980, 1986, 1993 3 * The Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 4. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
| 1/*- 2 * Copyright (c) 1980, 1986, 1993 3 * The Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 4. Neither the name of the University nor the names of its contributors 15 * may be used to endorse or promote products derived from this software 16 * without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 * @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
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51 52MTX_SYSINIT(rawcb_mtx, &rawcb_mtx, "rawcb", MTX_DEF); 53 54/* 55 * Initialize raw connection block q. 56 */ 57void 58raw_init(void) 59{ 60 INIT_VNET_NET(curvnet); 61 62 LIST_INIT(&V_rawcb_list); 63} 64 65/* 66 * Raw protocol input routine. Find the socket associated with the packet(s) 67 * and move them over. If nothing exists for this packet, drop it. 68 */ 69/* 70 * Raw protocol interface. 71 */ 72void 73raw_input(struct mbuf *m0, struct sockproto *proto, struct sockaddr *src) 74{ 75 INIT_VNET_NET(curvnet); 76 struct rawcb *rp; 77 struct mbuf *m = m0; 78 struct socket *last; 79 80 last = 0; 81 mtx_lock(&rawcb_mtx); 82 LIST_FOREACH(rp, &V_rawcb_list, list) { 83 if (rp->rcb_proto.sp_family != proto->sp_family) 84 continue; 85 if (rp->rcb_proto.sp_protocol && 86 rp->rcb_proto.sp_protocol != proto->sp_protocol) 87 continue; 88 if (last) { 89 struct mbuf *n; 90 n = m_copy(m, 0, (int)M_COPYALL); 91 if (n) { 92 if (sbappendaddr(&last->so_rcv, src, 93 n, (struct mbuf *)0) == 0) 94 /* should notify about lost packet */ 95 m_freem(n); 96 else 97 sorwakeup(last); 98 } 99 } 100 last = rp->rcb_socket; 101 } 102 if (last) { 103 if (sbappendaddr(&last->so_rcv, src, 104 m, (struct mbuf *)0) == 0) 105 m_freem(m); 106 else 107 sorwakeup(last); 108 } else 109 m_freem(m); 110 mtx_unlock(&rawcb_mtx); 111} 112 113/*ARGSUSED*/ 114void 115raw_ctlinput(int cmd, struct sockaddr *arg, void *dummy) 116{ 117 118 if (cmd < 0 || cmd >= PRC_NCMDS) 119 return; 120 /* INCOMPLETE */ 121} 122 123static void 124raw_uabort(struct socket *so) 125{ 126 127 KASSERT(sotorawcb(so) != NULL, ("raw_uabort: rp == NULL")); 128 129 soisdisconnected(so); 130} 131 132static void 133raw_uclose(struct socket *so) 134{ 135 136 KASSERT(sotorawcb(so) != NULL, ("raw_uabort: rp == NULL")); 137 138 soisdisconnected(so); 139} 140 141/* pru_accept is EOPNOTSUPP */ 142 143static int 144raw_uattach(struct socket *so, int proto, struct thread *td) 145{ 146 int error; 147 148 /* 149 * Implementors of raw sockets will already have allocated the PCB, 150 * so it must be non-NULL here. 151 */ 152 KASSERT(sotorawcb(so) != NULL, ("raw_uattach: so_pcb == NULL")); 153 154 if (td != NULL) { 155 error = priv_check(td, PRIV_NET_RAW); 156 if (error) 157 return (error); 158 } 159 return (raw_attach(so, proto)); 160} 161 162static int 163raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td) 164{ 165 166 return (EINVAL); 167} 168 169static int 170raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td) 171{ 172 173 return (EINVAL); 174} 175 176/* pru_connect2 is EOPNOTSUPP */ 177/* pru_control is EOPNOTSUPP */ 178 179static void 180raw_udetach(struct socket *so) 181{ 182 struct rawcb *rp = sotorawcb(so); 183 184 KASSERT(rp != NULL, ("raw_udetach: rp == NULL")); 185 186 raw_detach(rp); 187} 188 189static int 190raw_udisconnect(struct socket *so) 191{ 192 193 KASSERT(sotorawcb(so) != NULL, ("raw_udisconnect: rp == NULL")); 194 195 return (ENOTCONN); 196} 197 198/* pru_listen is EOPNOTSUPP */ 199 200static int 201raw_upeeraddr(struct socket *so, struct sockaddr **nam) 202{ 203 204 KASSERT(sotorawcb(so) != NULL, ("raw_upeeraddr: rp == NULL")); 205 206 return (ENOTCONN); 207} 208 209/* pru_rcvd is EOPNOTSUPP */ 210/* pru_rcvoob is EOPNOTSUPP */ 211 212static int 213raw_usend(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 214 struct mbuf *control, struct thread *td) 215{ 216 217 KASSERT(sotorawcb(so) != NULL, ("raw_usend: rp == NULL")); 218 219 if ((flags & PRUS_OOB) || (control && control->m_len)) { 220 /* XXXRW: Should control also be freed here? */ 221 if (m != NULL) 222 m_freem(m); 223 return (EOPNOTSUPP); 224 } 225 226 /* 227 * For historical (bad?) reasons, we effectively ignore the address 228 * argument to sendto(2). Perhaps we should return an error instead? 229 */ 230 return ((*so->so_proto->pr_output)(m, so)); 231} 232 233/* pru_sense is null */ 234 235static int 236raw_ushutdown(struct socket *so) 237{ 238 239 KASSERT(sotorawcb(so) != NULL, ("raw_ushutdown: rp == NULL")); 240 241 socantsendmore(so); 242 return (0); 243} 244 245static int 246raw_usockaddr(struct socket *so, struct sockaddr **nam) 247{ 248 249 KASSERT(sotorawcb(so) != NULL, ("raw_usockaddr: rp == NULL")); 250 251 return (EINVAL); 252} 253 254struct pr_usrreqs raw_usrreqs = { 255 .pru_abort = raw_uabort, 256 .pru_attach = raw_uattach, 257 .pru_bind = raw_ubind, 258 .pru_connect = raw_uconnect, 259 .pru_detach = raw_udetach, 260 .pru_disconnect = raw_udisconnect, 261 .pru_peeraddr = raw_upeeraddr, 262 .pru_send = raw_usend, 263 .pru_shutdown = raw_ushutdown, 264 .pru_sockaddr = raw_usockaddr, 265 .pru_close = raw_uclose, 266};
| 52 53MTX_SYSINIT(rawcb_mtx, &rawcb_mtx, "rawcb", MTX_DEF); 54 55/* 56 * Initialize raw connection block q. 57 */ 58void 59raw_init(void) 60{ 61 INIT_VNET_NET(curvnet); 62 63 LIST_INIT(&V_rawcb_list); 64} 65 66/* 67 * Raw protocol input routine. Find the socket associated with the packet(s) 68 * and move them over. If nothing exists for this packet, drop it. 69 */ 70/* 71 * Raw protocol interface. 72 */ 73void 74raw_input(struct mbuf *m0, struct sockproto *proto, struct sockaddr *src) 75{ 76 INIT_VNET_NET(curvnet); 77 struct rawcb *rp; 78 struct mbuf *m = m0; 79 struct socket *last; 80 81 last = 0; 82 mtx_lock(&rawcb_mtx); 83 LIST_FOREACH(rp, &V_rawcb_list, list) { 84 if (rp->rcb_proto.sp_family != proto->sp_family) 85 continue; 86 if (rp->rcb_proto.sp_protocol && 87 rp->rcb_proto.sp_protocol != proto->sp_protocol) 88 continue; 89 if (last) { 90 struct mbuf *n; 91 n = m_copy(m, 0, (int)M_COPYALL); 92 if (n) { 93 if (sbappendaddr(&last->so_rcv, src, 94 n, (struct mbuf *)0) == 0) 95 /* should notify about lost packet */ 96 m_freem(n); 97 else 98 sorwakeup(last); 99 } 100 } 101 last = rp->rcb_socket; 102 } 103 if (last) { 104 if (sbappendaddr(&last->so_rcv, src, 105 m, (struct mbuf *)0) == 0) 106 m_freem(m); 107 else 108 sorwakeup(last); 109 } else 110 m_freem(m); 111 mtx_unlock(&rawcb_mtx); 112} 113 114/*ARGSUSED*/ 115void 116raw_ctlinput(int cmd, struct sockaddr *arg, void *dummy) 117{ 118 119 if (cmd < 0 || cmd >= PRC_NCMDS) 120 return; 121 /* INCOMPLETE */ 122} 123 124static void 125raw_uabort(struct socket *so) 126{ 127 128 KASSERT(sotorawcb(so) != NULL, ("raw_uabort: rp == NULL")); 129 130 soisdisconnected(so); 131} 132 133static void 134raw_uclose(struct socket *so) 135{ 136 137 KASSERT(sotorawcb(so) != NULL, ("raw_uabort: rp == NULL")); 138 139 soisdisconnected(so); 140} 141 142/* pru_accept is EOPNOTSUPP */ 143 144static int 145raw_uattach(struct socket *so, int proto, struct thread *td) 146{ 147 int error; 148 149 /* 150 * Implementors of raw sockets will already have allocated the PCB, 151 * so it must be non-NULL here. 152 */ 153 KASSERT(sotorawcb(so) != NULL, ("raw_uattach: so_pcb == NULL")); 154 155 if (td != NULL) { 156 error = priv_check(td, PRIV_NET_RAW); 157 if (error) 158 return (error); 159 } 160 return (raw_attach(so, proto)); 161} 162 163static int 164raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td) 165{ 166 167 return (EINVAL); 168} 169 170static int 171raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td) 172{ 173 174 return (EINVAL); 175} 176 177/* pru_connect2 is EOPNOTSUPP */ 178/* pru_control is EOPNOTSUPP */ 179 180static void 181raw_udetach(struct socket *so) 182{ 183 struct rawcb *rp = sotorawcb(so); 184 185 KASSERT(rp != NULL, ("raw_udetach: rp == NULL")); 186 187 raw_detach(rp); 188} 189 190static int 191raw_udisconnect(struct socket *so) 192{ 193 194 KASSERT(sotorawcb(so) != NULL, ("raw_udisconnect: rp == NULL")); 195 196 return (ENOTCONN); 197} 198 199/* pru_listen is EOPNOTSUPP */ 200 201static int 202raw_upeeraddr(struct socket *so, struct sockaddr **nam) 203{ 204 205 KASSERT(sotorawcb(so) != NULL, ("raw_upeeraddr: rp == NULL")); 206 207 return (ENOTCONN); 208} 209 210/* pru_rcvd is EOPNOTSUPP */ 211/* pru_rcvoob is EOPNOTSUPP */ 212 213static int 214raw_usend(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, 215 struct mbuf *control, struct thread *td) 216{ 217 218 KASSERT(sotorawcb(so) != NULL, ("raw_usend: rp == NULL")); 219 220 if ((flags & PRUS_OOB) || (control && control->m_len)) { 221 /* XXXRW: Should control also be freed here? */ 222 if (m != NULL) 223 m_freem(m); 224 return (EOPNOTSUPP); 225 } 226 227 /* 228 * For historical (bad?) reasons, we effectively ignore the address 229 * argument to sendto(2). Perhaps we should return an error instead? 230 */ 231 return ((*so->so_proto->pr_output)(m, so)); 232} 233 234/* pru_sense is null */ 235 236static int 237raw_ushutdown(struct socket *so) 238{ 239 240 KASSERT(sotorawcb(so) != NULL, ("raw_ushutdown: rp == NULL")); 241 242 socantsendmore(so); 243 return (0); 244} 245 246static int 247raw_usockaddr(struct socket *so, struct sockaddr **nam) 248{ 249 250 KASSERT(sotorawcb(so) != NULL, ("raw_usockaddr: rp == NULL")); 251 252 return (EINVAL); 253} 254 255struct pr_usrreqs raw_usrreqs = { 256 .pru_abort = raw_uabort, 257 .pru_attach = raw_uattach, 258 .pru_bind = raw_ubind, 259 .pru_connect = raw_uconnect, 260 .pru_detach = raw_udetach, 261 .pru_disconnect = raw_udisconnect, 262 .pru_peeraddr = raw_upeeraddr, 263 .pru_send = raw_usend, 264 .pru_shutdown = raw_ushutdown, 265 .pru_sockaddr = raw_usockaddr, 266 .pru_close = raw_uclose, 267};
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