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169 lines
4.3 KiB
C
169 lines
4.3 KiB
C
/**HEADER********************************************************************
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*
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* Copyright (c) 2008 Freescale Semiconductor;
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* All Rights Reserved
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*
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* Copyright (c) 2004-2008 Embedded Access Inc.;
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* All Rights Reserved
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*
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* Copyright (c) 1989-2008 ARC International;
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* All Rights Reserved
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*
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***************************************************************************
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*
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* THIS SOFTWARE IS PROVIDED BY FREESCALE "AS IS" AND ANY EXPRESSED OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL FREESCALE OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*
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**************************************************************************
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*
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* $FileName: lcpif.c$
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* $Version : 3.8.6.0$
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* $Date : Jun-14-2012$
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*
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* Comments:
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*
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* This file contains the implementation of the LCP
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* interface routines.
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*
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*END************************************************************************/
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#include <ppp.h>
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#include "ppp_prv.h"
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static uint_32 LCP_send(_ppp_handle, uchar, uchar, PCB_PTR);
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/*FUNCTION*-------------------------------------------------------------
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*
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* Function Name : PPP_echo
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* Returned Value : error code
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* Comments :
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* Sends an LCP Echo-Request packet.
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*
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*END*-----------------------------------------------------------------*/
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uint_32 PPP_echo
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(
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_ppp_handle handle,
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/* [IN] - the PPP state structure */
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uchar id,
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/* [IN] - packet ID */
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PCB_PTR packet
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/* [IN] - the packet to send */
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)
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{ /* Body */
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#if RTCSCFG_ENABLE_IP4
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return LCP_send(handle, LCP_CODE_ECHO_REQ, id, packet);
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#else
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return RTCSERR_IP_IS_DISABLED;
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#endif /* RTCSCFG_ENABLE_IP4 */
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} /* Endbody */
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/*FUNCTION*-------------------------------------------------------------
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*
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* Function Name : PPP_discard
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* Returned Value : error code
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* Comments :
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* Sends an LCP Discard-Request packet.
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*
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*END*-----------------------------------------------------------------*/
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uint_32 PPP_discard
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(
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_ppp_handle handle,
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/* [IN] - the PPP state structure */
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uchar id,
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/* [IN] - packet ID */
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PCB_PTR packet
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/* [IN] - the packet to send */
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)
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{ /* Body */
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#if RTCSCFG_ENABLE_IP4
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return LCP_send(handle, LCP_CODE_DISC_REQ, id, packet);
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#else
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return RTCSERR_IP_IS_DISABLED;
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#endif /* RTCSCFG_ENABLE_IP4 */
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} /* Endbody */
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/*FUNCTION*-------------------------------------------------------------
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*
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* Function Name : LCP_send
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* Returned Value : error code
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* Comments :
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* Sends an LCP packet.
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*
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*END*-----------------------------------------------------------------*/
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#if RTCSCFG_ENABLE_IP4
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static uint_32 LCP_send
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(
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_ppp_handle handle,
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/* [IN] - the PPP state structure */
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uchar code,
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/* [IN] - LCP code */
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uchar id,
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/* [IN] - packet ID */
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PCB_PTR pcb
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/* [IN] - the packet to send */
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)
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{ /* Body */
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PCB_FRAGMENT_PTR frag_ptr;
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uchar_ptr outp;
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uint_32 size;
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/*
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** Make sure the first fragment is long enough for the PPP protocol
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** field and the LCP header. This isn't strictly necessary, but
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** it's impractical to split a 10 byte field over multiple fragments.
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*/
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if (pcb->FRAG[0].LENGTH < 10) {
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PCB_free(pcb);
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return RTCSERR_PPP_PACKET_TOO_SHORT;
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} /* Endif */
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size = 0;
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for (frag_ptr = pcb->FRAG; frag_ptr->LENGTH; frag_ptr++) {
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size += frag_ptr->LENGTH;
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} /* Endfor */
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size -= 2;
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outp = pcb->FRAG[0].FRAGMENT + 2;
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htonc(outp, code); outp++;
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htonc(outp, id); outp++;
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htons(outp, size); outp += 2;
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htonl(outp, 0); outp += 4;
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return PPP_send(handle, PPP_PROT_LCP, pcb);
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} /* Endbody */
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#endif /* RTCSCFG_ENABLE_IP4 */
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/* EOF */
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