ipcpout.c

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00001 /*
00002  * Copyright (C) 2001-2003 by egnite Software GmbH. All rights reserved.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  *
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the copyright holders nor the names of
00014  *    contributors may be used to endorse or promote products derived
00015  *    from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00018  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00019  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
00020  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
00021  * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
00022  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
00023  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
00024  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
00025  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00026  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
00027  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00028  * SUCH DAMAGE.
00029  *
00030  * For additional information see http://www.ethernut.de/
00031  *
00032  * -
00033  * Portions are 
00034  * Copyright (c) 1989 by Carnegie Mellon University.
00035  * All rights reserved.
00036  *
00037  * Redistribution and use in source and binary forms are permitted
00038  * provided that the above copyright notice and this paragraph are
00039  * duplicated in all such forms and that any documentation,
00040  * advertising materials, and other materials related to such
00041  * distribution and use acknowledge that the software was developed
00042  * by Carnegie Mellon University.  The name of the
00043  * University may not be used to endorse or promote products derived
00044  * from this software without specific prior written permission.
00045  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
00046  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
00047  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
00048  */
00049 
00050 /*
00051  * $Log: ipcpout.c,v $
00052  * Revision 1.5  2006/10/08 16:48:22  haraldkipp
00053  * Documentation fixed
00054  *
00055  * Revision 1.4  2005/04/08 15:20:50  olereinhardt
00056  * added <sys/types.h> (__APPLE__) and <netinet/in.h> (__linux__)
00057  * for htons and simmilar.
00058  *
00059  * Revision 1.3  2003/08/14 15:17:50  haraldkipp
00060  * Caller controls ID increment
00061  *
00062  * Revision 1.2  2003/07/24 16:13:38  haraldkipp
00063  * Never request a rejected DNS
00064  *
00065  * Revision 1.1.1.1  2003/05/09 14:41:31  haraldkipp
00066  * Initial using 3.2.1
00067  *
00068  * Revision 1.1  2003/03/31 14:53:27  harald
00069  * Prepare release 3.1
00070  *
00071  */
00072 #include <string.h>
00073 
00074 #include <dev/ppp.h>
00075 
00076 #include <sys/heap.h>
00077 #include <sys/thread.h>
00078 #include <sys/types.h>
00079 #include <net/if_var.h>
00080 #include <netinet/if_ppp.h>
00081 #include <netinet/ppp_fsm.h>
00082 #include <netinet/in.h>
00083 #include <net/ppp.h>
00084 
00089 
00106 int NutIpcpOutput(NUTDEVICE * dev, u_char code, u_char id, NETBUF * nb)
00107 {
00108     XCPHDR *xcp;
00109 
00110     if ((nb = NutNetBufAlloc(nb, NBAF_NETWORK, sizeof(XCPHDR))) == 0)
00111         return -1;
00112 
00113     xcp = nb->nb_nw.vp;
00114     xcp->xch_code = code;
00115     xcp->xch_id = id;
00116     xcp->xch_len = htons(nb->nb_nw.sz + nb->nb_tp.sz + nb->nb_ap.sz);
00117 
00118     if (NutPppOutput(dev, PPP_IPCP, 0, nb) == 0) {
00119         NutNetBufFree(nb);
00120         return 0;
00121     }
00122     return -1;
00123 }
00124 
00125 /*
00126  * Send a Configure-Request.
00127  * TODO: May use preconfigured addresses.
00128  */
00129 void IpcpTxConfReq(NUTDEVICE *dev, u_char id)
00130 {
00131     PPPDCB *dcb = dev->dev_dcb;
00132     XCPOPT *xcpo;
00133     NETBUF *nb;
00134     u_int len;
00135 
00136     /*
00137      * Not currently negotiating.
00138      */
00139     if(dcb->dcb_ipcp_state != PPPS_REQSENT &&
00140        dcb->dcb_ipcp_state != PPPS_ACKRCVD &&
00141        dcb->dcb_ipcp_state != PPPS_ACKSENT) {
00142         dcb->dcb_ipcp_naks = 0;
00143     }
00144     dcb->dcb_acked = 0;
00145 
00146     /*
00147      * Create the request.
00148      */
00149     len = 6;
00150     if((dcb->dcb_rejects & REJ_IPCP_DNS1) == 0)
00151         len += 6;
00152     if((dcb->dcb_rejects & REJ_IPCP_DNS2) == 0)
00153         len += 6;
00154     if ((nb = NutNetBufAlloc(0, NBAF_APPLICATION, len)) != 0) {
00155         xcpo = nb->nb_ap.vp;
00156         xcpo->xcpo_type = IPCP_ADDR;
00157         xcpo->xcpo_len = 6;
00158         xcpo->xcpo_.ul = dcb->dcb_local_ip;
00159 
00160         if((dcb->dcb_rejects & REJ_IPCP_DNS1) == 0) {
00161             xcpo = (XCPOPT *)((char *)xcpo + xcpo->xcpo_len);
00162             xcpo->xcpo_type = IPCP_MS_DNS1;
00163             xcpo->xcpo_len = 6;
00164             xcpo->xcpo_.ul = dcb->dcb_ip_dns1;
00165         }
00166 
00167         if((dcb->dcb_rejects & REJ_IPCP_DNS2) == 0) {
00168             xcpo = (XCPOPT *)((char *)xcpo + xcpo->xcpo_len);
00169             xcpo->xcpo_type = IPCP_MS_DNS2;
00170             xcpo->xcpo_len = 6;
00171             xcpo->xcpo_.ul = dcb->dcb_ip_dns2;
00172         }
00173         NutIpcpOutput(dev, XCP_CONFREQ, id, nb);
00174     }
00175 }
00176 

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