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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>
42 #include <sys/protosw.h>
43 #include <sys/socket.h>
44 #include <sys/socketvar.h>
46 #include <net/raw_cb.h>
49 * Initialize raw connection block q.
54 LIST_INIT(&rawcb_list);
57 /************************************************************************
58 * RAW PROTOCOL INTERFACE *
59 ************************************************************************/
62 * Raw protocol input routine. Find the socket associated with the packet(s)
63 * and move them over. If nothing exists for this packet, drop it. This
64 * routine is indirect called via rts_input() and will be serialized on
67 * Most other raw protocol interface functions are also serialized XXX.
70 raw_input(struct mbuf *m0, struct sockproto *proto, const struct sockaddr *src,
71 const struct sockaddr *dst)
78 LIST_FOREACH(rp, &rawcb_list, list) {
79 if (rp->rcb_proto.sp_family != proto->sp_family)
81 if (rp->rcb_proto.sp_protocol &&
82 rp->rcb_proto.sp_protocol != proto->sp_protocol)
85 * We assume the lower level routines have
86 * placed the address in a canonical format
87 * suitable for a structure comparison.
89 * Note that if the lengths are not the same
90 * the comparison will fail at the first byte.
92 if (rp->rcb_laddr && !sa_equal(rp->rcb_laddr, dst))
94 if (rp->rcb_faddr && !sa_equal(rp->rcb_faddr, src))
99 n = m_copypacket(m, MB_DONTWAIT);
101 if (ssb_appendaddr(&last->so_rcv, src, n,
102 (struct mbuf *)0) == 0) {
103 /* should notify about lost packet */
110 last = rp->rcb_socket;
113 if (ssb_appendaddr(&last->so_rcv, src, m, (struct mbuf *)0) == 0)
124 raw_ctlinput(int cmd, struct sockaddr *arg, void *dummy)
127 if (cmd < 0 || cmd > PRC_NCMDS)
133 raw_uabort(struct socket *so)
135 struct rawcb *rp = sotorawcb(so);
141 soisdisconnected(so);
145 /* pru_accept is EOPNOTSUPP */
148 raw_uattach(struct socket *so, int proto, struct pru_attach_info *ai)
150 struct rawcb *rp = sotorawcb(so);
155 if ((error = suser_cred(ai->p_ucred, NULL_CRED_OKAY)) != 0)
157 return raw_attach(so, proto, ai->sb_rlimit);
161 raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td)
167 raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td)
172 /* pru_connect2 is EOPNOTSUPP */
173 /* pru_control is EOPNOTSUPP */
176 raw_udetach(struct socket *so)
178 struct rawcb *rp = sotorawcb(so);
188 raw_udisconnect(struct socket *so)
190 struct rawcb *rp = sotorawcb(so);
194 if (rp->rcb_faddr == NULL) {
198 soisdisconnected(so);
202 /* pru_listen is EOPNOTSUPP */
205 raw_upeeraddr(struct socket *so, struct sockaddr **nam)
207 struct rawcb *rp = sotorawcb(so);
211 if (rp->rcb_faddr == NULL) {
214 *nam = dup_sockaddr(rp->rcb_faddr);
218 /* pru_rcvd is EOPNOTSUPP */
219 /* pru_rcvoob is EOPNOTSUPP */
222 raw_usend(struct socket *so, int flags, struct mbuf *m,
223 struct sockaddr *nam, struct mbuf *control, struct thread *td)
226 struct rawcb *rp = sotorawcb(so);
227 struct pr_output_info oi;
234 if (flags & PRUS_OOB) {
239 if (control && control->m_len) {
249 } else if (rp->rcb_faddr == NULL) {
253 oi.p_pid = td->td_proc->p_pid;
254 error = (*so->so_proto->pr_output)(m, so, &oi);
257 rp->rcb_faddr = NULL;
264 /* pru_sense is null */
267 raw_ushutdown(struct socket *so)
269 struct rawcb *rp = sotorawcb(so);
278 raw_usockaddr(struct socket *so, struct sockaddr **nam)
280 struct rawcb *rp = sotorawcb(so);
284 if (rp->rcb_laddr == NULL)
286 *nam = dup_sockaddr(rp->rcb_laddr);
290 struct pr_usrreqs raw_usrreqs = {
291 .pru_abort = raw_uabort,
292 .pru_accept = pru_accept_notsupp,
293 .pru_attach = raw_uattach,
294 .pru_bind = raw_ubind,
295 .pru_connect = raw_uconnect,
296 .pru_connect2 = pru_connect2_notsupp,
297 .pru_control = pru_control_notsupp,
298 .pru_detach = raw_udetach,
299 .pru_disconnect = raw_udisconnect,
300 .pru_listen = pru_listen_notsupp,
301 .pru_peeraddr = raw_upeeraddr,
302 .pru_rcvd = pru_rcvd_notsupp,
303 .pru_rcvoob = pru_rcvoob_notsupp,
304 .pru_send = raw_usend,
305 .pru_sense = pru_sense_null,
306 .pru_shutdown = raw_ushutdown,
307 .pru_sockaddr = raw_usockaddr,
308 .pru_sosend = sosend,
309 .pru_soreceive = soreceive,