2 * Copyright (c) 1999, Boris Popov
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * $FreeBSD: src/sys/netncp/ncp_sock.c,v 1.2 1999/10/12 10:36:59 bp Exp $
33 * $DragonFly: src/sys/netproto/ncp/ncp_sock.c,v 1.20 2007/05/18 17:05:12 dillon Exp $
35 * Low level socket routines
41 #if !defined(INET) && !defined(IPX)
42 #error "NCP requires either INET of IPX protocol family"
45 #include <sys/param.h>
46 #include <sys/errno.h>
47 #include <sys/malloc.h>
48 #include <sys/systm.h>
50 #include <sys/protosw.h>
51 #include <sys/socket.h>
52 #include <sys/socketvar.h>
53 #include <sys/socketvar2.h>
54 #include <sys/socketops.h>
55 #include <sys/kernel.h>
57 #include <sys/fcntl.h>
58 #include <sys/syslog.h>
60 #include <net/route.h>
61 #include <sys/thread2.h>
64 #include <netproto/ipx/ipx.h>
65 #include <netproto/ipx/ipx_pcb.h>
75 #define ipx_setnullnet(x) ((x).x_net.s_net[0]=0); ((x).x_net.s_net[1]=0);
76 #define ipx_setnullhost(x) ((x).x_host.s_host[0] = 0); \
77 ((x).x_host.s_host[1] = 0); ((x).x_host.s_host[2] = 0);
80 /*int ncp_poll(struct socket *so, int events);*/
81 /*static int ncp_getsockname(struct socket *so, caddr_t asa, int *alen);*/
82 static int ncp_soconnect(struct socket *so,struct sockaddr *target, struct thread *p);
85 /* This will need only if native IP used, or (unlikely) NCP will be
86 * implemented on the socket level
89 ncp_soconnect(struct socket *so,struct sockaddr *target, struct thread *td) {
92 error = soconnect(so, (struct sockaddr*)target, td);
96 * Wait for the connection to complete. Cribbed from the
97 * connect system call but with the wait timing out so
98 * that interruptible mounts don't hang here for a long time.
102 while ((so->so_state & SS_ISCONNECTING) && so->so_error == 0) {
103 tsleep((caddr_t)&so->so_timeo, 0, "ncpcon", 2 * hz);
104 if ((so->so_state & SS_ISCONNECTING) &&
105 so->so_error == 0 /*&& rep &&*/) {
106 soclrstate(so, SS_ISCONNECTING);
112 error = so->so_error;
124 ncp_getsockname(struct socket *so, caddr_t asa, int *alen) {
129 error = so_pru_sockaddr(so, &sa);
132 len = min(len, sa->sa_len);
133 bcopy(sa, (caddr_t)asa, (u_int)len);
143 ncp_sock_recv(struct socket *so, struct sockbuf *sio)
147 sbinit(sio, 1000000); /* limit data returned (inexact, hint only) */
148 flags = MSG_DONTWAIT;
150 error = so_pru_soreceive(so, NULL, NULL, sio, NULL, &flags);
151 #ifdef NCP_SOCKET_DEBUG
153 kprintf("ncp_recv: err=%d\n", error);
159 ncp_sock_send(struct socket *so, struct mbuf *top, struct ncp_rq *rqp)
161 struct thread *td = curthread; /* XXX */
162 struct sockaddr *to = 0;
163 struct ncp_conn *conn = rqp->conn;
169 m = m_copym(top, 0, M_COPYALL, MB_WAIT);
171 error = so_pru_sosend(so, to, NULL, m, NULL, flags, td);
172 if (error == 0 || error == EINTR || error == ENETDOWN)
174 if (rqp->rexmit == 0) break;
176 tsleep(&sendwait, 0, "ncprsn", conn->li.timeout * hz);
177 error = ncp_chkintr(conn, td);
178 if (error == EINTR) break;
181 log(LOG_INFO, "ncp_send: error %d for server %s", error, conn->li.server);
188 * Connect to specified server via IPX
191 ncp_sock_connect_ipx(struct ncp_conn *conn) {
192 struct sockaddr_ipx sipx;
194 struct thread *td = conn->td;
195 int addrlen, error, count;
197 sipx.sipx_port = htons(0);
199 for (count = 0;;count++) {
200 if (count > (IPXPORT_WELLKNOWN-IPXPORT_RESERVED)*2) {
204 conn->ncp_so = conn->wdg_so = NULL;
205 checkbad(socreate(AF_IPX, &conn->ncp_so, SOCK_DGRAM, 0, td));
206 if (conn->li.opt & NCP_OPT_WDOG)
207 checkbad(socreate(AF_IPX, &conn->wdg_so, SOCK_DGRAM,0,td));
208 addrlen = sizeof(sipx);
209 sipx.sipx_family = AF_IPX;
210 ipx_setnullnet(sipx.sipx_addr);
211 ipx_setnullhost(sipx.sipx_addr);
212 sipx.sipx_len = addrlen;
213 error = sobind(conn->ncp_so, (struct sockaddr *)&sipx, td);
215 if ((conn->li.opt & NCP_OPT_WDOG) == 0)
217 sipx.sipx_addr = sotoipxpcb(conn->ncp_so)->ipxp_laddr;
218 sipx.sipx_port = htons(ntohs(sipx.sipx_port) + 1);
219 ipx_setnullnet(sipx.sipx_addr);
220 ipx_setnullhost(sipx.sipx_addr);
221 error = sobind(conn->wdg_so, (struct sockaddr *)&sipx, td);
224 if (error != EADDRINUSE) goto bad;
225 sipx.sipx_port = htons((ntohs(sipx.sipx_port)+4) & 0xfff8);
226 soclose(conn->ncp_so, FNONBLOCK);
228 soclose(conn->wdg_so, FNONBLOCK);
230 npcb = sotoipxpcb(conn->ncp_so);
231 npcb->ipxp_dpt = IPXPROTO_NCP;
232 /* IPXrouted must be running, i.e. route must be presented */
233 conn->li.ipxaddr.sipx_len = sizeof(struct sockaddr_ipx);
234 checkbad(ncp_soconnect(conn->ncp_so, &conn->li.saddr, td));
236 sotoipxpcb(conn->wdg_so)->ipxp_laddr.x_net = npcb->ipxp_laddr.x_net;
237 sotoipxpcb(conn->wdg_so)->ipxp_laddr.x_host= npcb->ipxp_laddr.x_host;
240 conn->flags |= NCPFL_SOCONN;
243 if (ncp_burst_enabled) {
244 checkbad(socreate(AF_IPX, &conn->bc_so, SOCK_DGRAM, 0, td));
245 bzero(&sipx, sizeof(sipx));
246 sipx.sipx_len = sizeof(sipx);
247 checkbad(sobind(conn->bc_so, (struct sockaddr *)&sipx, td));
248 checkbad(ncp_soconnect(conn->bc_so, &conn->li.saddr, td));
252 conn->flags |= NCPFL_SOCONN;
253 ncp_sock_checksum(conn, 0);
257 ncp_sock_disconnect(conn);
262 ncp_sock_checksum(struct ncp_conn *conn, int enable) {
264 #ifdef SO_IPX_CHECKSUM
266 sotoipxpcb(conn->ncp_so)->ipxp_flags |= IPXP_CHECKSUM;
268 sotoipxpcb(conn->ncp_so)->ipxp_flags &= ~IPXP_CHECKSUM;
277 * Connect to specified server via IP
280 ncp_sock_connect_in(struct ncp_conn *conn) {
281 struct sockaddr_in sin;
282 struct thread *td = conn->td;
283 int addrlen=sizeof(sin), error;
287 conn->ncp_so = conn->wdg_so = NULL;
288 checkbad(socreate(AF_INET, &conn->ncp_so, SOCK_DGRAM, IPPROTO_UDP, td));
289 sin.sin_family = AF_INET;
290 sin.sin_len = addrlen;
291 checkbad(sobind(conn->ncp_so, (struct sockaddr *)&sin, td));
292 checkbad(ncp_soconnect(conn->ncp_so,(struct sockaddr*)&conn->li.addr, td));
294 conn->flags |= NCPFL_SOCONN;
297 ncp_sock_disconnect(conn);
304 * Connection expected to be locked
307 ncp_sock_disconnect(struct ncp_conn *conn) {
309 conn->flags &= ~(NCPFL_SOCONN | NCPFL_ATTACHED | NCPFL_LOGGED);
313 soshutdown(so, SHUT_RDWR);
314 soclose(so, FNONBLOCK);
319 soshutdown(so, SHUT_RDWR);
320 soclose(so, FNONBLOCK);
326 soshutdown(so, SHUT_RDWR);
327 soclose(so, FNONBLOCK);
335 ncp_watchdog(struct ncp_conn *conn) {
337 int error, len, flags;
343 while (conn->wdg_so) { /* not a loop */
345 sbinit(&sio, 1000000);
346 flags = MSG_DONTWAIT;
347 error = so_pru_soreceive(so, (struct sockaddr**)&sa,
348 NULL, &sio, NULL, &flags);
352 NCPSDEBUG("got watch dog %d\n",len);
357 buf = mtod(sio.sb_mb, char *);
363 error = so_pru_sosend(so, sa, NULL, sio.sb_mb, NULL, 0, curthread);
364 NCPSDEBUG("send watch dog %d\n",error);
374 ncp_check_conn(struct ncp_conn *conn) {
375 if (conn == NULL || !(conn->flags & NCPFL_ATTACHED))