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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>
48 #include <sys/msgport2.h>
50 #include <net/raw_cb.h>
53 static struct lwkt_token raw_token = LWKT_TOKEN_INITIALIZER(raw_token);
56 * Initialize raw connection block q.
61 LIST_INIT(&rawcb_list);
64 /************************************************************************
65 * RAW PROTOCOL INTERFACE *
66 ************************************************************************/
69 * Raw protocol input routine. Find the socket associated with the packet(s)
70 * and move them over. If nothing exists for this packet, drop it. This
71 * routine is indirect called via rts_input() and will be serialized on
74 * Most other raw protocol interface functions are also serialized XXX.
77 raw_input(struct mbuf *m0, const struct sockproto *proto,
78 const struct sockaddr *src, const struct sockaddr *dst,
79 const struct rawcb *skip)
85 lwkt_gettoken(&raw_token);
88 LIST_FOREACH(rp, &rawcb_list, list) {
91 if (rp->rcb_proto.sp_family != proto->sp_family)
93 if (rp->rcb_proto.sp_protocol &&
94 rp->rcb_proto.sp_protocol != proto->sp_protocol)
97 * We assume the lower level routines have
98 * placed the address in a canonical format
99 * suitable for a structure comparison.
101 * Note that if the lengths are not the same
102 * the comparison will fail at the first byte.
104 if (rp->rcb_laddr && !sa_equal(rp->rcb_laddr, dst))
106 if (rp->rcb_faddr && !sa_equal(rp->rcb_faddr, src))
111 n = m_copypacket(m, MB_DONTWAIT);
113 lwkt_gettoken(&last->so_rcv.ssb_token);
114 if (ssb_appendaddr(&last->so_rcv, src, n,
116 /* should notify about lost packet */
121 lwkt_reltoken(&last->so_rcv.ssb_token);
124 last = rp->rcb_socket;
127 lwkt_gettoken(&last->so_rcv.ssb_token);
128 if (ssb_appendaddr(&last->so_rcv, src, m, NULL) == 0)
132 lwkt_reltoken(&last->so_rcv.ssb_token);
136 lwkt_reltoken(&raw_token);
140 * nm_cmd, nm_arg, nm_extra
143 raw_ctlinput(netmsg_t msg)
147 if (msg->ctlinput.nm_cmd < 0 || msg->ctlinput.nm_cmd > PRC_NCMDS)
149 lwkt_replymsg(&msg->lmsg, error);
153 * NOTE: (so) is referenced from soabort*() and netmsg_pru_abort()
154 * will sofree() it when we return.
157 raw_uabort(netmsg_t msg)
159 struct rawcb *rp = sotorawcb(msg->base.nm_so);
164 soisdisconnected(msg->base.nm_so);
169 lwkt_replymsg(&msg->lmsg, error);
172 /* pru_accept is EOPNOTSUPP */
175 raw_uattach(netmsg_t msg)
177 struct socket *so = msg->base.nm_so;
178 int proto = msg->attach.nm_proto;
179 struct pru_attach_info *ai = msg->attach.nm_ai;
185 error = priv_check_cred(ai->p_ucred, PRIV_ROOT, NULL_CRED_OKAY);
187 error = raw_attach(so, proto, ai->sb_rlimit);
191 lwkt_replymsg(&msg->lmsg, error);
195 raw_ubind(netmsg_t msg)
197 lwkt_replymsg(&msg->lmsg, EINVAL);
201 raw_uconnect(netmsg_t msg)
203 lwkt_replymsg(&msg->lmsg, EINVAL);
206 /* pru_connect2 is EOPNOTSUPP */
207 /* pru_control is EOPNOTSUPP */
210 raw_udetach(netmsg_t msg)
212 struct rawcb *rp = sotorawcb(msg->base.nm_so);
221 lwkt_replymsg(&msg->lmsg, error);
225 raw_udisconnect(netmsg_t msg)
227 struct socket *so = msg->base.nm_so;
234 } else if (rp->rcb_faddr == NULL) {
239 soisdisconnected(so);
243 lwkt_replymsg(&msg->lmsg, error);
246 /* pru_listen is EOPNOTSUPP */
249 raw_upeeraddr(netmsg_t msg)
251 struct rawcb *rp = sotorawcb(msg->base.nm_so);
256 } else if (rp->rcb_faddr == NULL) {
259 *msg->peeraddr.nm_nam = dup_sockaddr(rp->rcb_faddr);
262 lwkt_replymsg(&msg->lmsg, error);
265 /* pru_rcvd is EOPNOTSUPP */
266 /* pru_rcvoob is EOPNOTSUPP */
269 raw_usend(netmsg_t msg)
271 struct socket *so = msg->base.nm_so;
272 struct mbuf *m = msg->send.nm_m;
273 struct mbuf *control = msg->send.nm_control;
274 struct rawcb *rp = sotorawcb(so);
275 struct pr_output_info oi;
276 int flags = msg->send.nm_flags;
284 if (flags & PRUS_OOB) {
289 if (control && control->m_len) {
293 if (msg->send.nm_addr) {
298 rp->rcb_faddr = msg->send.nm_addr;
299 } else if (rp->rcb_faddr == NULL) {
303 oi.p_pid = msg->send.nm_td->td_proc->p_pid;
304 error = (*so->so_proto->pr_output)(m, so, &oi);
306 if (msg->send.nm_addr)
307 rp->rcb_faddr = NULL;
311 lwkt_replymsg(&msg->lmsg, error);
314 /* pru_sense is null */
317 raw_ushutdown(netmsg_t msg)
319 struct rawcb *rp = sotorawcb(msg->base.nm_so);
323 socantsendmore(msg->base.nm_so);
328 lwkt_replymsg(&msg->lmsg, error);
332 raw_usockaddr(netmsg_t msg)
334 struct rawcb *rp = sotorawcb(msg->base.nm_so);
339 } else if (rp->rcb_laddr == NULL) {
342 *msg->sockaddr.nm_nam = dup_sockaddr(rp->rcb_laddr);
345 lwkt_replymsg(&msg->lmsg, error);
348 struct pr_usrreqs raw_usrreqs = {
349 .pru_abort = raw_uabort,
350 .pru_accept = pr_generic_notsupp,
351 .pru_attach = raw_uattach,
352 .pru_bind = raw_ubind,
353 .pru_connect = raw_uconnect,
354 .pru_connect2 = pr_generic_notsupp,
355 .pru_control = pr_generic_notsupp,
356 .pru_detach = raw_udetach,
357 .pru_disconnect = raw_udisconnect,
358 .pru_listen = pr_generic_notsupp,
359 .pru_peeraddr = raw_upeeraddr,
360 .pru_rcvd = pr_generic_notsupp,
361 .pru_rcvoob = pr_generic_notsupp,
362 .pru_send = raw_usend,
363 .pru_sense = pru_sense_null,
364 .pru_shutdown = raw_ushutdown,
365 .pru_sockaddr = raw_usockaddr,
366 .pru_sosend = sosend,
367 .pru_soreceive = soreceive