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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 static struct lwkt_token raw_token = LWKT_TOKEN_MP_INITIALIZER(raw_token);
55 * Initialize raw connection block q.
60 LIST_INIT(&rawcb_list);
63 /************************************************************************
64 * RAW PROTOCOL INTERFACE *
65 ************************************************************************/
68 * Raw protocol input routine. Find the socket associated with the packet(s)
69 * and move them over. If nothing exists for this packet, drop it. This
70 * routine is indirect called via rts_input() and will be serialized on
73 * Most other raw protocol interface functions are also serialized XXX.
76 raw_input(struct mbuf *m0, const struct sockproto *proto,
77 const struct sockaddr *src, const struct sockaddr *dst,
78 const struct rawcb *skip)
84 lwkt_gettoken(&raw_token);
87 LIST_FOREACH(rp, &rawcb_list, list) {
90 if (rp->rcb_proto.sp_family != proto->sp_family)
92 if (rp->rcb_proto.sp_protocol &&
93 rp->rcb_proto.sp_protocol != proto->sp_protocol)
96 * We assume the lower level routines have
97 * placed the address in a canonical format
98 * suitable for a structure comparison.
100 * Note that if the lengths are not the same
101 * the comparison will fail at the first byte.
103 if (rp->rcb_laddr && !sa_equal(rp->rcb_laddr, dst))
105 if (rp->rcb_faddr && !sa_equal(rp->rcb_faddr, src))
110 n = m_copypacket(m, MB_DONTWAIT);
112 lwkt_gettoken(&last->so_rcv.ssb_token);
113 if (ssb_appendaddr(&last->so_rcv, src, n,
115 /* should notify about lost packet */
120 lwkt_reltoken(&last->so_rcv.ssb_token);
123 last = rp->rcb_socket;
126 lwkt_gettoken(&last->so_rcv.ssb_token);
127 if (ssb_appendaddr(&last->so_rcv, src, m, NULL) == 0)
131 lwkt_reltoken(&last->so_rcv.ssb_token);
135 lwkt_reltoken(&raw_token);
140 raw_ctlinput(int cmd, struct sockaddr *arg, void *dummy)
143 if (cmd < 0 || cmd > PRC_NCMDS)
149 * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort()
150 * will sofree() it when we return.
153 raw_uabort(struct socket *so)
155 struct rawcb *rp = sotorawcb(so);
160 soisdisconnected(so);
164 /* pru_accept is EOPNOTSUPP */
167 raw_uattach(struct socket *so, int proto, struct pru_attach_info *ai)
169 struct rawcb *rp = sotorawcb(so);
174 if ((error = priv_check_cred(ai->p_ucred, PRIV_ROOT, NULL_CRED_OKAY)) != 0)
176 return raw_attach(so, proto, ai->sb_rlimit);
180 raw_ubind(struct socket *so, struct sockaddr *nam, struct thread *td)
186 raw_uconnect(struct socket *so, struct sockaddr *nam, struct thread *td)
191 /* pru_connect2 is EOPNOTSUPP */
192 /* pru_control is EOPNOTSUPP */
195 raw_udetach(struct socket *so)
197 struct rawcb *rp = sotorawcb(so);
207 raw_udisconnect(struct socket *so)
209 struct rawcb *rp = sotorawcb(so);
213 if (rp->rcb_faddr == NULL) {
218 soisdisconnected(so);
224 /* pru_listen is EOPNOTSUPP */
227 raw_upeeraddr(struct socket *so, struct sockaddr **nam)
229 struct rawcb *rp = sotorawcb(so);
233 if (rp->rcb_faddr == NULL) {
236 *nam = dup_sockaddr(rp->rcb_faddr);
240 /* pru_rcvd is EOPNOTSUPP */
241 /* pru_rcvoob is EOPNOTSUPP */
244 raw_usend(struct socket *so, int flags, struct mbuf *m,
245 struct sockaddr *nam, struct mbuf *control, struct thread *td)
248 struct rawcb *rp = sotorawcb(so);
249 struct pr_output_info oi;
256 if (flags & PRUS_OOB) {
261 if (control && control->m_len) {
271 } else if (rp->rcb_faddr == NULL) {
275 oi.p_pid = td->td_proc->p_pid;
276 error = (*so->so_proto->pr_output)(m, so, &oi);
279 rp->rcb_faddr = NULL;
286 /* pru_sense is null */
289 raw_ushutdown(struct socket *so)
291 struct rawcb *rp = sotorawcb(so);
300 raw_usockaddr(struct socket *so, struct sockaddr **nam)
302 struct rawcb *rp = sotorawcb(so);
306 if (rp->rcb_laddr == NULL)
308 *nam = dup_sockaddr(rp->rcb_laddr);
312 struct pr_usrreqs raw_usrreqs = {
313 .pru_abort = raw_uabort,
314 .pru_accept = pru_accept_notsupp,
315 .pru_attach = raw_uattach,
316 .pru_bind = raw_ubind,
317 .pru_connect = raw_uconnect,
318 .pru_connect2 = pru_connect2_notsupp,
319 .pru_control = pru_control_notsupp,
320 .pru_detach = raw_udetach,
321 .pru_disconnect = raw_udisconnect,
322 .pru_listen = pru_listen_notsupp,
323 .pru_peeraddr = raw_upeeraddr,
324 .pru_rcvd = pru_rcvd_notsupp,
325 .pru_rcvoob = pru_rcvoob_notsupp,
326 .pru_send = raw_usend,
327 .pru_sense = pru_sense_null,
328 .pru_shutdown = raw_ushutdown,
329 .pru_sockaddr = raw_usockaddr,
330 .pru_sosend = sosend,
331 .pru_soreceive = soreceive