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29 * @(#)raw_usrreq.c 8.1 (Berkeley) 6/10/93
30 * $FreeBSD: src/sys/net/raw_usrreq.c,v 1.18 1999/08/28 00:48:28 peter Exp $
33 #include <sys/param.h>
34 #include <sys/systm.h>
38 #include <sys/protosw.h>
39 #include <sys/socket.h>
40 #include <sys/socketvar.h>
42 #include <sys/socketvar2.h>
43 #include <sys/msgport2.h>
45 #include <net/raw_cb.h>
46 #include <net/netisr2.h>
49 * Except from the raw_init(), rest of interfaces must be called
54 * Initialize raw connection block q.
59 LIST_INIT(&rawcb_list);
62 /************************************************************************
63 * RAW PROTOCOL INTERFACE *
64 ************************************************************************/
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. This
69 * routine is indirect called via rts_input() and will be serialized on
72 * Most other raw protocol interface functions are also serialized XXX.
75 raw_input(struct mbuf *m0, const struct sockproto *proto,
76 const struct sockaddr *src, const struct sockaddr *dst,
77 const struct rawcb *skip)
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))
107 /* Run any filtering that may have been installed. */
108 if (rp->rcb_filter != NULL && rp->rcb_filter(m, proto, rp) != 0)
113 n = m_copypacket(m, M_NOWAIT);
115 lwkt_gettoken(&last->so_rcv.ssb_token);
116 if (ssb_appendaddr(&last->so_rcv, src, n,
123 lwkt_reltoken(&last->so_rcv.ssb_token);
126 last = rp->rcb_socket;
129 lwkt_gettoken(&last->so_rcv.ssb_token);
130 if (ssb_appendaddr(&last->so_rcv, src, m, NULL) == 0) {
135 lwkt_reltoken(&last->so_rcv.ssb_token);
142 * nm_cmd, nm_arg, nm_extra
145 raw_ctlinput(netmsg_t msg)
151 if (msg->ctlinput.nm_cmd < 0 || msg->ctlinput.nm_cmd > PRC_NCMDS) {
154 lwkt_replymsg(&msg->lmsg, error);
158 * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort()
159 * will sofree() it when we return.
162 raw_uabort(netmsg_t msg)
164 struct rawcb *rp = sotorawcb(msg->base.nm_so);
171 soisdisconnected(msg->base.nm_so);
176 lwkt_replymsg(&msg->lmsg, error);
179 /* pru_accept is EOPNOTSUPP */
182 raw_uattach(netmsg_t msg)
184 struct socket *so = msg->base.nm_so;
185 int proto = msg->attach.nm_proto;
186 struct pru_attach_info *ai = msg->attach.nm_ai;
194 error = priv_check_cred(ai->p_ucred, PRIV_ROOT, NULL_CRED_OKAY);
196 error = raw_attach(so, proto, ai->sb_rlimit);
200 lwkt_replymsg(&msg->lmsg, error);
204 raw_ubind(netmsg_t msg)
207 lwkt_replymsg(&msg->lmsg, EINVAL);
211 raw_uconnect(netmsg_t msg)
214 lwkt_replymsg(&msg->lmsg, EINVAL);
217 /* pru_connect2 is EOPNOTSUPP */
218 /* pru_control is EOPNOTSUPP */
221 raw_udetach(netmsg_t msg)
223 struct rawcb *rp = sotorawcb(msg->base.nm_so);
234 lwkt_replymsg(&msg->lmsg, error);
238 raw_udisconnect(netmsg_t msg)
240 struct socket *so = msg->base.nm_so;
249 } else if (rp->rcb_faddr == NULL) {
254 soisdisconnected(so);
258 lwkt_replymsg(&msg->lmsg, error);
261 /* pru_listen is EOPNOTSUPP */
264 raw_upeeraddr(netmsg_t msg)
266 struct rawcb *rp = sotorawcb(msg->base.nm_so);
273 } else if (rp->rcb_faddr == NULL) {
276 *msg->peeraddr.nm_nam = dup_sockaddr(rp->rcb_faddr);
279 lwkt_replymsg(&msg->lmsg, error);
282 /* pru_rcvd is EOPNOTSUPP */
283 /* pru_rcvoob is EOPNOTSUPP */
286 raw_usend(netmsg_t msg)
288 struct socket *so = msg->base.nm_so;
289 struct mbuf *m = msg->send.nm_m;
290 struct mbuf *control = msg->send.nm_control;
291 struct rawcb *rp = sotorawcb(so);
292 struct pr_output_info oi;
293 int flags = msg->send.nm_flags;
303 if (flags & PRUS_OOB) {
308 if (control && control->m_len) {
312 if (msg->send.nm_addr) {
317 rp->rcb_faddr = msg->send.nm_addr;
318 } else if (rp->rcb_faddr == NULL) {
322 oi.p_pid = msg->send.nm_td->td_proc->p_pid;
323 error = (*so->so_proto->pr_output)(m, so, &oi);
325 if (msg->send.nm_addr)
326 rp->rcb_faddr = NULL;
330 lwkt_replymsg(&msg->lmsg, error);
333 /* pru_sense is null */
336 raw_ushutdown(netmsg_t msg)
338 struct rawcb *rp = sotorawcb(msg->base.nm_so);
344 socantsendmore(msg->base.nm_so);
349 lwkt_replymsg(&msg->lmsg, error);
353 raw_usockaddr(netmsg_t msg)
355 struct rawcb *rp = sotorawcb(msg->base.nm_so);
362 } else if (rp->rcb_laddr == NULL) {
365 *msg->sockaddr.nm_nam = dup_sockaddr(rp->rcb_laddr);
368 lwkt_replymsg(&msg->lmsg, error);
371 struct pr_usrreqs raw_usrreqs = {
372 .pru_abort = raw_uabort,
373 .pru_accept = pr_generic_notsupp,
374 .pru_attach = raw_uattach,
375 .pru_bind = raw_ubind,
376 .pru_connect = raw_uconnect,
377 .pru_connect2 = pr_generic_notsupp,
378 .pru_control = pr_generic_notsupp,
379 .pru_detach = raw_udetach,
380 .pru_disconnect = raw_udisconnect,
381 .pru_listen = pr_generic_notsupp,
382 .pru_peeraddr = raw_upeeraddr,
383 .pru_rcvd = pr_generic_notsupp,
384 .pru_rcvoob = pr_generic_notsupp,
385 .pru_send = raw_usend,
386 .pru_sense = pru_sense_null,
387 .pru_shutdown = raw_ushutdown,
388 .pru_sockaddr = raw_usockaddr,
389 .pru_sosend = sosend,
390 .pru_soreceive = soreceive