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391 lines
7.5 KiB
C
391 lines
7.5 KiB
C
/*
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*
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* ===================================
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* HARP | Host ATM Research Platform
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* ===================================
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*
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*
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* This Host ATM Research Platform ("HARP") file (the "Software") is
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* made available by Network Computing Services, Inc. ("NetworkCS")
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* "AS IS". NetworkCS does not provide maintenance, improvements or
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* support of any kind.
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*
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* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
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* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
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* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
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* In no event shall NetworkCS be responsible for any damages, including
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* but not limited to consequential damages, arising from or relating to
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* any use of the Software or related support.
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*
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* Copyright 1994-1998 Network Computing Services, Inc.
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*
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* Copies of this Software may be made, however, the above copyright
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* notice must be reproduced on all copies.
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*
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* @(#) $FreeBSD$
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*
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*/
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/*
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* ATM Forum UNI 3.0/3.1 Signalling Manager
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* ----------------------------------------
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*
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* Protocol processing module
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*
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*/
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#include <netatm/kern_include.h>
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#include <netatm/uni/unisig_var.h>
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#include <netatm/uni/unisig_msg.h>
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#ifndef lint
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__RCSID("@(#) $FreeBSD$");
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#endif
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/*
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* Free a UNISIG signalling message
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*
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* Free the passed message and any IEs that are attached to it
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*
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* Arguments:
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* msg pointer to UNISIG protocol instance
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*
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* Returns:
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* none
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*
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*/
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void
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unisig_free_msg(msg)
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struct unisig_msg *msg;
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{
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int i;
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struct ie_generic *ie, *ienxt;
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ATM_DEBUG1("unisig_free_msg: msg=%p\n", msg);
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/*
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* First free all the IEs
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*/
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for (i=0; i<UNI_MSG_IE_CNT; i++) {
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ie = msg->msg_ie_vec[i];
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while (ie) {
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ienxt = ie->ie_next;
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atm_free(ie);
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ie = ienxt;
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}
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}
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/*
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* Finally, free the message structure itself
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*/
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atm_free(msg);
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}
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/*
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* Verify a VCCB
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*
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* Search UNISIG's VCCB queue to verify that a VCCB belongs to UNISIG.
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*
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* Arguments:
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* usp pointer to UNISIG protocol instance
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* svp pointer to a VCCB
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*
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* Returns:
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* TRUE the VCCB belongs to UNISIG
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* FALSE the VCCB doesn't belong to UNISIG
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*
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*/
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int
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unisig_verify_vccb(usp, uvp)
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struct unisig *usp;
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struct unisig_vccb *uvp;
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{
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struct unisig_vccb *utp, *uvnext;
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for (utp = Q_HEAD(usp->us_vccq, struct unisig_vccb);
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utp; utp = uvnext){
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uvnext = Q_NEXT(utp, struct unisig_vccb, uv_sigelem);
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if (uvp == utp) {
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return(TRUE);
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}
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}
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return(FALSE);
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}
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/*
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* Find a connection
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*
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* Find a VCCB given the call reference
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*
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* Arguments:
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* usp pointer to UNISIG protocol instance
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* cref the call reference to search for
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*
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* Returns:
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* 0 there is no such VCCB
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* uvp the address of the VCCB
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*
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*/
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struct unisig_vccb *
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unisig_find_conn(usp, cref)
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struct unisig *usp;
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u_int cref;
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{
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struct unisig_vccb *uvp, *uvnext;
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for (uvp = Q_HEAD(usp->us_vccq, struct unisig_vccb); uvp;
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uvp = uvnext){
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uvnext = Q_NEXT(uvp, struct unisig_vccb, uv_sigelem);
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if (uvp->uv_call_ref == cref)
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break;
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}
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return(uvp);
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}
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/*
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* Find a VCCB
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*
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* Find a VCCB given the VPI and VCI.
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*
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* Arguments:
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* usp pointer to UNISIG protocol instance
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* vpi the VPI to search for
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* vci the VCI to search for
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* dir the direction of the VCC (VCC_IN, VCC_OUT, or both).
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* If dir is set to zero, return the address of any VCCB
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* with the given VPI/VCI, regardless of direction.
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*
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* Returns:
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* 0 there is no such VCCB
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* uvp the address of the VCCB
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*
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*/
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struct unisig_vccb *
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unisig_find_vpvc(usp, vpi, vci, dir)
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struct unisig *usp;
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int vpi, vci;
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u_char dir;
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{
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struct unisig_vccb *uvp, *uvnext;
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for (uvp = Q_HEAD(usp->us_vccq, struct unisig_vccb); uvp;
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uvp = uvnext){
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uvnext = Q_NEXT(uvp, struct unisig_vccb, uv_sigelem);
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if (uvp->uv_vpi == vpi &&
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uvp->uv_vci == vci &&
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(uvp->uv_type & dir) == dir)
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break;
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}
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return(uvp);
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}
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/*
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* Allocate a call reference value
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*
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* Arguments:
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* usp pointer to UNISIG protocol instance
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*
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* Returns:
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* 0 call reference not available
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* cref the call reference value
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*
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*/
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int
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unisig_alloc_call_ref(usp)
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struct unisig *usp;
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{
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int cref;
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/*
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* Get the next call reference value
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*/
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cref = usp->us_cref;
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/*
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* Make sure it hasn't got too large
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*/
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if (cref >= UNI_MSG_CALL_REF_DUMMY) {
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/* XXX */
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log(LOG_ERR, "uni: call reference limit reached\n");
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return(0);
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}
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/*
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* Bump the call reference value
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*/
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usp->us_cref++;
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return(cref);
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}
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/*
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* Print an ATM address
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*
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* Convert an ATM address into an ASCII string suitable for printing.
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*
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* Arguments:
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* p pointer to an ATM address
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*
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* Returns:
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* the address of a string with the ASCII representation of the
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* address. This routine returns the address of a statically-
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* allocated buffer, so if repeated calls to this routine are made,
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* each call will destroy the result of the previous call.
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*
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*/
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char *
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unisig_addr_print(p)
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Atm_addr *p;
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{
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int i;
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char *fp, *op, t_buff[16];
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u_char *cp;
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static char strbuff[256];
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static char nf_DCC[] = "0xX.XX.X.XXX.XX.XX.XX.XXXXXX.X";
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static char nf_ICD[] = "0xX.XX.X.XXX.XX.XX.XX.XXXXXX.X";
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static char nf_E164[] = "0xX.XXXXXXXX.XX.XX.XXXXXX.X";
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union {
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int w;
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char c[4];
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} u1, u2;
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/*
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* Clear the print buffer
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*/
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KM_ZERO(strbuff, sizeof(strbuff));
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/*
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* Select appropriate printing format
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*/
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switch(p->address_format) {
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case T_ATM_ENDSYS_ADDR:
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/*
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* Select format by NSAP type
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*/
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switch(((Atm_addr_nsap *)p->address)->aan_afi) {
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default:
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case AFI_DCC:
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fp = nf_DCC;
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break;
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case AFI_ICD:
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fp = nf_ICD;
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break;
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case AFI_E164:
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fp = nf_E164;
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break;
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}
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/*
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* Loop through the format string, converting the NSAP
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* to ASCII
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*/
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cp = (u_char *) p->address;
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op = strbuff;
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while (*fp) {
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if (*fp == 'X') {
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/*
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* If format character is an 'X', put a
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* two-digit hex representation of the
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* NSAP byte in the output buffer
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*/
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snprintf(t_buff, sizeof(t_buff),
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"%x", *cp + 512);
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strcpy(op, &t_buff[strlen(t_buff)-2]);
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op++; op++;
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cp++;
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} else {
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/*
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* If format character isn't an 'X',
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* just copy it to the output buffer
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*/
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*op = *fp;
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op++;
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}
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fp++;
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}
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break;
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case T_ATM_E164_ADDR:
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/*
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* Print the IA5 characters of the E.164 address
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*/
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for(i=0; i<p->address_length; i++) {
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snprintf(strbuff + strlen(strbuff),
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sizeof(strbuff) - strlen(strbuff), "%c",
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((Atm_addr_e164 *)p->address)->aae_addr[i]);
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}
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break;
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case T_ATM_SPANS_ADDR:
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/*
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* Get address into integers
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*/
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u1.c[0] = ((Atm_addr_spans *)p->address)->aas_addr[0];
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u1.c[1] = ((Atm_addr_spans *)p->address)->aas_addr[1];
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u1.c[2] = ((Atm_addr_spans *)p->address)->aas_addr[2];
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u1.c[3] = ((Atm_addr_spans *)p->address)->aas_addr[3];
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u2.c[0] = ((Atm_addr_spans *)p->address)->aas_addr[4];
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u2.c[1] = ((Atm_addr_spans *)p->address)->aas_addr[5];
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u2.c[2] = ((Atm_addr_spans *)p->address)->aas_addr[6];
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u2.c[3] = ((Atm_addr_spans *)p->address)->aas_addr[7];
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/*
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* Print the address as two words xxxxx.yyyyyyyy
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*/
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snprintf(strbuff, sizeof(strbuff), "%x.%x", u1.w, u2.w);
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break;
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case T_ATM_ABSENT:
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default:
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strcpy(strbuff, "-");
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}
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return(strbuff);
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}
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/*
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* Print the contents of a message buffer chain
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*
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* Arguments:
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* m pointer to a buffer
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*
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* Returns:
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* none
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*
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*/
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void
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unisig_print_mbuf(m)
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KBuffer *m;
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{
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int i;
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caddr_t cp;
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printf("unisig_print_mbuf:\n");
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while (m) {
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KB_DATASTART(m, cp, caddr_t);
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for (i = 0; i < KB_LEN(m); i++) {
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if (i == 0)
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printf(" bfr=%p: ", m);
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printf("%x ", (u_char)*cp++);
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}
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printf("<end_bfr>\n");
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m = KB_NEXT(m);
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}
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}
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