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33 * @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
34 * $FreeBSD: src/sys/net/raw_usrreq.c,v 1.18 1999/08/28 00:48:28 peter Exp $
35 * $DragonFly: src/sys/net/raw_usrreq.c,v 1.14 2007/06/24 20:00:00 dillon Exp $
38 #include <sys/param.h>
39 #include <sys/systm.h>
43 #include <sys/protosw.h>
44 #include <sys/socket.h>
45 #include <sys/socketvar.h>
47 #include <sys/socketvar2.h>
49 #include <net/raw_cb.h>
52 * Initialize raw connection block q.
57 LIST_INIT(&rawcb_list);
60 /************************************************************************
61 * RAW PROTOCOL INTERFACE *
62 ************************************************************************/
65 * Raw protocol input routine. Find the socket associated with the packet(s)
66 * and move them over. If nothing exists for this packet, drop it. This
67 * routine is indirect called via rts_input() and will be serialized on
70 * Most other raw protocol interface functions are also serialized XXX.
73 raw_input(struct mbuf *m0, const struct sockproto *proto,
74 const struct sockaddr *src, const struct sockaddr *dst,
75 const struct rawcb *skip)
82 LIST_FOREACH(rp, &rawcb_list, list) {
85 if (rp->rcb_proto.sp_family != proto->sp_family)
87 if (rp->rcb_proto.sp_protocol &&
88 rp->rcb_proto.sp_protocol != proto->sp_protocol)
91 * We assume the lower level routines have
92 * placed the address in a canonical format
93 * suitable for a structure comparison.
95 * Note that if the lengths are not the same
96 * the comparison will fail at the first byte.
98 if (rp->rcb_laddr && !sa_equal(rp->rcb_laddr, dst))
100 if (rp->rcb_faddr && !sa_equal(rp->rcb_faddr, src))
105 n = m_copypacket(m, MB_DONTWAIT);
107 if (ssb_appendaddr(&last->so_rcv, src, n,
109 /* should notify about lost packet */
116 last = rp->rcb_socket;
119 if (ssb_appendaddr(&last->so_rcv, src, m, NULL) == 0)
130 raw_ctlinput(int cmd, struct sockaddr *arg, void *dummy)
133 if (cmd < 0 || cmd > PRC_NCMDS)
139 * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort()
140 * will sofree() it when we return.
143 raw_uabort(struct socket *so)
145 struct rawcb *rp = sotorawcb(so);
150 soisdisconnected(so);
154 /* pru_accept is EOPNOTSUPP */
157 raw_uattach(struct socket *so, int proto, struct pru_attach_info *ai)
159 struct rawcb *rp = sotorawcb(so);
164 if ((error = priv_check_cred(ai->p_ucred, PRIV_ROOT, NULL_CRED_OKAY)) != 0)
166 return raw_attach(so, proto, ai->sb_rlimit);
170 raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td)
176 raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td)
181 /* pru_connect2 is EOPNOTSUPP */
182 /* pru_control is EOPNOTSUPP */
185 raw_udetach(struct socket *so)
187 struct rawcb *rp = sotorawcb(so);
197 raw_udisconnect(struct socket *so)
199 struct rawcb *rp = sotorawcb(so);
203 if (rp->rcb_faddr == NULL) {
208 soisdisconnected(so);
214 /* pru_listen is EOPNOTSUPP */
217 raw_upeeraddr(struct socket *so, struct sockaddr **nam)
219 struct rawcb *rp = sotorawcb(so);
223 if (rp->rcb_faddr == NULL) {
226 *nam = dup_sockaddr(rp->rcb_faddr);
230 /* pru_rcvd is EOPNOTSUPP */
231 /* pru_rcvoob is EOPNOTSUPP */
234 raw_usend(struct socket *so, int flags, struct mbuf *m,
235 struct sockaddr *nam, struct mbuf *control, struct thread *td)
238 struct rawcb *rp = sotorawcb(so);
239 struct pr_output_info oi;
246 if (flags & PRUS_OOB) {
251 if (control && control->m_len) {
261 } else if (rp->rcb_faddr == NULL) {
265 oi.p_pid = td->td_proc->p_pid;
266 error = (*so->so_proto->pr_output)(m, so, &oi);
269 rp->rcb_faddr = NULL;
276 /* pru_sense is null */
279 raw_ushutdown(struct socket *so)
281 struct rawcb *rp = sotorawcb(so);
290 raw_usockaddr(struct socket *so, struct sockaddr **nam)
292 struct rawcb *rp = sotorawcb(so);
296 if (rp->rcb_laddr == NULL)
298 *nam = dup_sockaddr(rp->rcb_laddr);
302 struct pr_usrreqs raw_usrreqs = {
303 .pru_abort = raw_uabort,
304 .pru_accept = pru_accept_notsupp,
305 .pru_attach = raw_uattach,
306 .pru_bind = raw_ubind,
307 .pru_connect = raw_uconnect,
308 .pru_connect2 = pru_connect2_notsupp,
309 .pru_control = pru_control_notsupp,
310 .pru_detach = raw_udetach,
311 .pru_disconnect = raw_udisconnect,
312 .pru_listen = pru_listen_notsupp,
313 .pru_peeraddr = raw_upeeraddr,
314 .pru_rcvd = pru_rcvd_notsupp,
315 .pru_rcvoob = pru_rcvoob_notsupp,
316 .pru_send = raw_usend,
317 .pru_sense = pru_sense_null,
318 .pru_shutdown = raw_ushutdown,
319 .pru_sockaddr = raw_usockaddr,
320 .pru_sosend = sosend,
321 .pru_soreceive = soreceive