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raw_usrreq.c (180305) raw_usrreq.c (180385)
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:

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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:

--- 14 unchanged lines hidden (view full) ---

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
31 * $FreeBSD: head/sys/net/raw_usrreq.c 180305 2008-07-05 18:03:39Z rwatson $
31 * $FreeBSD: head/sys/net/raw_usrreq.c 180385 2008-07-09 15:48:16Z rwatson $
32 */
33
34#include <sys/param.h>
35#include <sys/kernel.h>
36#include <sys/lock.h>
37#include <sys/malloc.h>
38#include <sys/mbuf.h>
39#include <sys/mutex.h>

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62/*
63 * Raw protocol input routine. Find the socket associated with the packet(s)
64 * and move them over. If nothing exists for this packet, drop it.
65 */
66/*
67 * Raw protocol interface.
68 */
69void
32 */
33
34#include <sys/param.h>
35#include <sys/kernel.h>
36#include <sys/lock.h>
37#include <sys/malloc.h>
38#include <sys/mbuf.h>
39#include <sys/mutex.h>

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62/*
63 * Raw protocol input routine. Find the socket associated with the packet(s)
64 * and move them over. If nothing exists for this packet, drop it.
65 */
66/*
67 * Raw protocol interface.
68 */
69void
70raw_input(struct mbuf *m0, struct sockproto *proto, struct sockaddr *src,
71 struct sockaddr *dst)
70raw_input(struct mbuf *m0, struct sockproto *proto, struct sockaddr *src)
72{
73 struct rawcb *rp;
74 struct mbuf *m = m0;
75 struct socket *last;
76
77 last = 0;
78 mtx_lock(&rawcb_mtx);
79 LIST_FOREACH(rp, &rawcb_list, list) {
80 if (rp->rcb_proto.sp_family != proto->sp_family)
81 continue;
82 if (rp->rcb_proto.sp_protocol &&
83 rp->rcb_proto.sp_protocol != proto->sp_protocol)
84 continue;
71{
72 struct rawcb *rp;
73 struct mbuf *m = m0;
74 struct socket *last;
75
76 last = 0;
77 mtx_lock(&rawcb_mtx);
78 LIST_FOREACH(rp, &rawcb_list, list) {
79 if (rp->rcb_proto.sp_family != proto->sp_family)
80 continue;
81 if (rp->rcb_proto.sp_protocol &&
82 rp->rcb_proto.sp_protocol != proto->sp_protocol)
83 continue;
85 /*
86 * We assume the lower level routines have placed the address
87 * in a canonical format suitable for a structure comparison.
88 *
89 * Note that if the lengths are not the same the comparison
90 * will fail at the first byte.
91 */
92#define equal(a1, a2) \
93 (bcmp((caddr_t)(a1), (caddr_t)(a2), a1->sa_len) == 0)
94 if (rp->rcb_laddr && !equal(rp->rcb_laddr, dst))
95 continue;
96 if (rp->rcb_faddr && !equal(rp->rcb_faddr, src))
97 continue;
98 if (last) {
99 struct mbuf *n;
100 n = m_copy(m, 0, (int)M_COPYALL);
101 if (n) {
102 if (sbappendaddr(&last->so_rcv, src,
103 n, (struct mbuf *)0) == 0)
104 /* should notify about lost packet */
105 m_freem(n);

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128 if (cmd < 0 || cmd >= PRC_NCMDS)
129 return;
130 /* INCOMPLETE */
131}
132
133static void
134raw_uabort(struct socket *so)
135{
84 if (last) {
85 struct mbuf *n;
86 n = m_copy(m, 0, (int)M_COPYALL);
87 if (n) {
88 if (sbappendaddr(&last->so_rcv, src,
89 n, (struct mbuf *)0) == 0)
90 /* should notify about lost packet */
91 m_freem(n);

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114 if (cmd < 0 || cmd >= PRC_NCMDS)
115 return;
116 /* INCOMPLETE */
117}
118
119static void
120raw_uabort(struct socket *so)
121{
136 struct rawcb *rp = sotorawcb(so);
137
122
138 KASSERT(rp != NULL, ("raw_uabort: rp == NULL"));
139 raw_disconnect(rp);
123 KASSERT(sotorawcb(so) != NULL, ("raw_uabort: rp == NULL"));
124
140 soisdisconnected(so);
141}
142
143static void
144raw_uclose(struct socket *so)
145{
125 soisdisconnected(so);
126}
127
128static void
129raw_uclose(struct socket *so)
130{
146 struct rawcb *rp = sotorawcb(so);
147
131
148 KASSERT(rp != NULL, ("raw_uabort: rp == NULL"));
149 raw_disconnect(rp);
132 KASSERT(sotorawcb(so) != NULL, ("raw_uabort: rp == NULL"));
133
150 soisdisconnected(so);
151}
152
153/* pru_accept is EOPNOTSUPP */
154
155static int
156raw_uattach(struct socket *so, int proto, struct thread *td)
157{
158 int error;
159
160 /*
161 * Implementors of raw sockets will already have allocated the PCB,
134 soisdisconnected(so);
135}
136
137/* pru_accept is EOPNOTSUPP */
138
139static int
140raw_uattach(struct socket *so, int proto, struct thread *td)
141{
142 int error;
143
144 /*
145 * Implementors of raw sockets will already have allocated the PCB,
162 * so it must be non-NULL here.
146 * so it must be non-NULL here.
163 */
164 KASSERT(sotorawcb(so) != NULL, ("raw_uattach: so_pcb == NULL"));
165
166 if (td != NULL) {
167 error = priv_check(td, PRIV_NET_RAW);
168 if (error)
147 */
148 KASSERT(sotorawcb(so) != NULL, ("raw_uattach: so_pcb == NULL"));
149
150 if (td != NULL) {
151 error = priv_check(td, PRIV_NET_RAW);
152 if (error)
169 return error;
153 return (error);
170 }
154 }
171 return raw_attach(so, proto);
155 return (raw_attach(so, proto));
172}
173
174static int
175raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td)
176{
177
178 return (EINVAL);
179}

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189/* pru_control is EOPNOTSUPP */
190
191static void
192raw_udetach(struct socket *so)
193{
194 struct rawcb *rp = sotorawcb(so);
195
196 KASSERT(rp != NULL, ("raw_udetach: rp == NULL"));
156}
157
158static int
159raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td)
160{
161
162 return (EINVAL);
163}

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173/* pru_control is EOPNOTSUPP */
174
175static void
176raw_udetach(struct socket *so)
177{
178 struct rawcb *rp = sotorawcb(so);
179
180 KASSERT(rp != NULL, ("raw_udetach: rp == NULL"));
181
197 raw_detach(rp);
198}
199
200static int
201raw_udisconnect(struct socket *so)
202{
182 raw_detach(rp);
183}
184
185static int
186raw_udisconnect(struct socket *so)
187{
203 struct rawcb *rp = sotorawcb(so);
204
188
205 KASSERT(rp != NULL, ("raw_udisconnect: rp == NULL"));
206 if (rp->rcb_faddr == 0)
207 return (ENOTCONN);
208 raw_disconnect(rp);
209 soisdisconnected(so);
210 return (0);
189 KASSERT(sotorawcb(so) != NULL, ("raw_udisconnect: rp == NULL"));
190
191 return (ENOTCONN);
211}
212
213/* pru_listen is EOPNOTSUPP */
214
215static int
216raw_upeeraddr(struct socket *so, struct sockaddr **nam)
217{
192}
193
194/* pru_listen is EOPNOTSUPP */
195
196static int
197raw_upeeraddr(struct socket *so, struct sockaddr **nam)
198{
218 struct rawcb *rp = sotorawcb(so);
219
199
220 KASSERT(rp != NULL, ("raw_upeeraddr: rp == NULL"));
221 if (rp->rcb_faddr == 0)
222 return (ENOTCONN);
223 *nam = sodupsockaddr(rp->rcb_faddr, M_WAITOK);
224 return (0);
200 KASSERT(sotorawcb(so) != NULL, ("raw_upeeraddr: rp == NULL"));
201
202 return (ENOTCONN);
225}
226
227/* pru_rcvd is EOPNOTSUPP */
228/* pru_rcvoob is EOPNOTSUPP */
229
230static int
231raw_usend(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
232 struct mbuf *control, struct thread *td)
233{
203}
204
205/* pru_rcvd is EOPNOTSUPP */
206/* pru_rcvoob is EOPNOTSUPP */
207
208static int
209raw_usend(struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam,
210 struct mbuf *control, struct thread *td)
211{
234 int error;
235 struct rawcb *rp = sotorawcb(so);
236
212
237 KASSERT(rp != NULL, ("raw_usend: rp == NULL"));
213 KASSERT(sotorawcb(so) != NULL, ("raw_usend: rp == NULL"));
238
214
239 if (flags & PRUS_OOB) {
240 error = EOPNOTSUPP;
241 goto release;
215 if ((flags & PRUS_OOB) || (control && control->m_len)) {
216 /* XXXRW: Should control also be freed here? */
217 if (m != NULL)
218 m_freem(m);
219 return (EOPNOTSUPP);
242 }
243
220 }
221
244 if (control && control->m_len) {
245 error = EOPNOTSUPP;
246 goto release;
247 }
248 if (nam) {
249 if (rp->rcb_faddr) {
250 error = EISCONN;
251 goto release;
252 }
253 rp->rcb_faddr = nam;
254 } else if (rp->rcb_faddr == 0) {
255 error = ENOTCONN;
256 goto release;
257 }
258 error = (*so->so_proto->pr_output)(m, so);
259 m = NULL;
260 if (nam)
261 rp->rcb_faddr = 0;
262release:
263 if (m != NULL)
264 m_freem(m);
265 return (error);
222 /*
223 * For historical (bad?) reasons, we effectively ignore the address
224 * argument to sendto(2). Perhaps we should return an error instead?
225 */
226 return ((*so->so_proto->pr_output)(m, so));
266}
267
268/* pru_sense is null */
269
270static int
271raw_ushutdown(struct socket *so)
272{
273
274 KASSERT(sotorawcb(so) != NULL, ("raw_ushutdown: rp == NULL"));
227}
228
229/* pru_sense is null */
230
231static int
232raw_ushutdown(struct socket *so)
233{
234
235 KASSERT(sotorawcb(so) != NULL, ("raw_ushutdown: rp == NULL"));
236
275 socantsendmore(so);
276 return (0);
277}
278
279static int
280raw_usockaddr(struct socket *so, struct sockaddr **nam)
281{
237 socantsendmore(so);
238 return (0);
239}
240
241static int
242raw_usockaddr(struct socket *so, struct sockaddr **nam)
243{
282 struct rawcb *rp = sotorawcb(so);
283
244
284 KASSERT(rp != NULL, ("raw_usockaddr: rp == NULL"));
285 if (rp->rcb_laddr == 0)
286 return (EINVAL);
287 *nam = sodupsockaddr(rp->rcb_laddr, M_WAITOK);
288 return (0);
245 KASSERT(sotorawcb(so) != NULL, ("raw_usockaddr: rp == NULL"));
246
247 return (EINVAL);
289}
290
291struct pr_usrreqs raw_usrreqs = {
292 .pru_abort = raw_uabort,
293 .pru_attach = raw_uattach,
294 .pru_bind = raw_ubind,
295 .pru_connect = raw_uconnect,
296 .pru_detach = raw_udetach,
297 .pru_disconnect = raw_udisconnect,
298 .pru_peeraddr = raw_upeeraddr,
299 .pru_send = raw_usend,
300 .pru_shutdown = raw_ushutdown,
301 .pru_sockaddr = raw_usockaddr,
302 .pru_close = raw_uclose,
303};
248}
249
250struct pr_usrreqs raw_usrreqs = {
251 .pru_abort = raw_uabort,
252 .pru_attach = raw_uattach,
253 .pru_bind = raw_ubind,
254 .pru_connect = raw_uconnect,
255 .pru_detach = raw_udetach,
256 .pru_disconnect = raw_udisconnect,
257 .pru_peeraddr = raw_upeeraddr,
258 .pru_send = raw_usend,
259 .pru_shutdown = raw_ushutdown,
260 .pru_sockaddr = raw_usockaddr,
261 .pru_close = raw_uclose,
262};