798 lines
16 KiB
C
798 lines
16 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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* @(#) $Id: uniarp_output.c,v 1.1 1998/09/15 08:23:09 phk Exp $
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*
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*/
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/*
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* ATM Forum UNI Support
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* ---------------------
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*
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* UNI ATMARP support (RFC1577) - Output packet processing
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*
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*/
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#include <netatm/kern_include.h>
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#include <netatm/ipatm/ipatm_var.h>
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#include <netatm/ipatm/ipatm_serv.h>
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#include <netatm/uni/uniip_var.h>
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#ifndef lint
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__RCSID("@(#) $Id: uniarp_output.c,v 1.1 1998/09/15 08:23:09 phk Exp $");
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#endif
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/*
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* Issue an ATMARP Request PDU
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*
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* Arguments:
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* uip pointer to IP interface
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* tip pointer to target IP address
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*
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* Returns:
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* 0 PDU was successfully sent
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* else unable to send PDU
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*
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*/
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int
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uniarp_arp_req(uip, tip)
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struct uniip *uip;
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struct in_addr *tip;
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{
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KBuffer *m;
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struct atmarp_hdr *ahp;
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struct atm_nif *nip;
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struct ip_nif *inp;
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struct ipvcc *ivp;
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struct siginst *sip;
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char *cp;
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int len, err;
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inp = uip->uip_ipnif;
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nip = inp->inf_nif;
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sip = inp->inf_nif->nif_pif->pif_siginst;
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/*
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* Figure out how long pdu is going to be
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*/
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len = sizeof(struct atmarp_hdr) + (2 * sizeof(struct in_addr));
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switch (sip->si_addr.address_format) {
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case T_ATM_ENDSYS_ADDR:
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len += sip->si_addr.address_length;
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break;
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case T_ATM_E164_ADDR:
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len += sip->si_addr.address_length;
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if (sip->si_subaddr.address_format == T_ATM_ENDSYS_ADDR)
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len += sip->si_subaddr.address_length;
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break;
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}
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/*
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* Get a buffer for pdu
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*/
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KB_ALLOCPKT(m, len, KB_F_NOWAIT, KB_T_DATA);
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if (m == NULL)
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return (1);
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/*
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* Place aligned pdu at end of buffer
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*/
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KB_TAILALIGN(m, len);
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KB_DATASTART(m, ahp, struct atmarp_hdr *);
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/*
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* Setup variable fields pointer
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*/
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cp = (char *)ahp + sizeof(struct atmarp_hdr);
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/*
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* Build fields
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*/
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ahp->ah_hrd = htons(ARP_ATMFORUM);
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ahp->ah_pro = htons(ETHERTYPE_IP);
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len = sip->si_addr.address_length;
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switch (sip->si_addr.address_format) {
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case T_ATM_ENDSYS_ADDR:
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ahp->ah_shtl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
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/* ah_sha */
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KM_COPY(sip->si_addr.address, cp, len - 1);
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((struct atm_addr_nsap *)cp)->aan_sel = nip->nif_sel;
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cp += len;
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ahp->ah_sstl = 0;
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break;
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case T_ATM_E164_ADDR:
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ahp->ah_shtl = ARP_TL_E164 | (len & ARP_TL_LMASK);
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/* ah_sha */
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KM_COPY(sip->si_addr.address, cp, len);
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cp += len;
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if (sip->si_subaddr.address_format == T_ATM_ENDSYS_ADDR) {
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len = sip->si_subaddr.address_length;
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ahp->ah_sstl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
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/* ah_ssa */
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KM_COPY(sip->si_subaddr.address, cp, len - 1);
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((struct atm_addr_nsap *)cp)->aan_sel = nip->nif_sel;
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cp += len;
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} else
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ahp->ah_sstl = 0;
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break;
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default:
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ahp->ah_shtl = 0;
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ahp->ah_sstl = 0;
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}
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ahp->ah_op = htons(ARP_REQUEST);
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ahp->ah_spln = sizeof(struct in_addr);
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/* ah_spa */
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KM_COPY((caddr_t)&(IA_SIN(inp->inf_addr)->sin_addr), cp,
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sizeof(struct in_addr));
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cp += sizeof(struct in_addr);
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ahp->ah_thtl = 0;
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ahp->ah_tstl = 0;
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ahp->ah_tpln = sizeof(struct in_addr);
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/* ah_tpa */
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KM_COPY((caddr_t)tip, cp, sizeof(struct in_addr));
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/*
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* Finally, send the pdu to the ATMARP server
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*/
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ivp = uip->uip_arpsvrvcc;
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if (uniarp_print)
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uniarp_pdu_print(ivp, m, "send");
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err = atm_cm_cpcs_data(ivp->iv_arpconn, m);
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if (err) {
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/*
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* Didn't make it
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*/
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KB_FREEALL(m);
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return (1);
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}
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return (0);
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}
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/*
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* Issue an ATMARP Response PDU
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*
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* Arguments:
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* uip pointer to IP interface
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* amp pointer to source map entry
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* tip pointer to target IP address
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* tatm pointer to target ATM address
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* tsub pointer to target ATM subaddress
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* ivp pointer to vcc over which to send pdu
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*
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* Returns:
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* 0 PDU was successfully sent
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* else unable to send PDU
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*
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*/
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int
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uniarp_arp_rsp(uip, amp, tip, tatm, tsub, ivp)
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struct uniip *uip;
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struct arpmap *amp;
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struct in_addr *tip;
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Atm_addr *tatm;
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Atm_addr *tsub;
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struct ipvcc *ivp;
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{
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KBuffer *m;
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struct atmarp_hdr *ahp;
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char *cp;
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int len, err;
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/*
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* Figure out how long pdu is going to be
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*/
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len = sizeof(struct atmarp_hdr) + (2 * sizeof(struct in_addr));
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switch (amp->am_dstatm.address_format) {
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case T_ATM_ENDSYS_ADDR:
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len += amp->am_dstatm.address_length;
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break;
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case T_ATM_E164_ADDR:
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len += amp->am_dstatm.address_length;
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if (amp->am_dstatmsub.address_format == T_ATM_ENDSYS_ADDR)
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len += amp->am_dstatmsub.address_length;
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break;
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}
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switch (tatm->address_format) {
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case T_ATM_ENDSYS_ADDR:
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len += tatm->address_length;
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break;
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case T_ATM_E164_ADDR:
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len += tatm->address_length;
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if (tsub->address_format == T_ATM_ENDSYS_ADDR)
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len += tsub->address_length;
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break;
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}
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/*
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* Get a buffer for pdu
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*/
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KB_ALLOCPKT(m, len, KB_F_NOWAIT, KB_T_DATA);
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if (m == NULL)
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return (1);
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/*
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* Place aligned pdu at end of buffer
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*/
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KB_TAILALIGN(m, len);
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KB_DATASTART(m, ahp, struct atmarp_hdr *);
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/*
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* Setup variable fields pointer
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*/
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cp = (char *)ahp + sizeof(struct atmarp_hdr);
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/*
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* Build fields
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*/
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ahp->ah_hrd = htons(ARP_ATMFORUM);
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ahp->ah_pro = htons(ETHERTYPE_IP);
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len = amp->am_dstatm.address_length;
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switch (amp->am_dstatm.address_format) {
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case T_ATM_ENDSYS_ADDR:
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ahp->ah_shtl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
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/* ah_sha */
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KM_COPY(amp->am_dstatm.address, cp, len);
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cp += len;
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ahp->ah_sstl = 0;
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break;
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case T_ATM_E164_ADDR:
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ahp->ah_shtl = ARP_TL_E164 | (len & ARP_TL_LMASK);
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/* ah_sha */
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KM_COPY(amp->am_dstatm.address, cp, len);
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cp += len;
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if (amp->am_dstatmsub.address_format == T_ATM_ENDSYS_ADDR) {
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len = amp->am_dstatmsub.address_length;
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ahp->ah_sstl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
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/* ah_ssa */
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KM_COPY(amp->am_dstatmsub.address, cp, len);
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cp += len;
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} else
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ahp->ah_sstl = 0;
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break;
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default:
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ahp->ah_shtl = 0;
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ahp->ah_sstl = 0;
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}
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ahp->ah_op = htons(ARP_REPLY);
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ahp->ah_spln = sizeof(struct in_addr);
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/* ah_spa */
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KM_COPY((caddr_t)&->am_dstip, cp, sizeof(struct in_addr));
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cp += sizeof(struct in_addr);
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len = tatm->address_length;
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switch (tatm->address_format) {
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case T_ATM_ENDSYS_ADDR:
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ahp->ah_thtl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
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/* ah_tha */
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KM_COPY(tatm->address, cp, len);
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cp += len;
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ahp->ah_tstl = 0;
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break;
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case T_ATM_E164_ADDR:
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ahp->ah_thtl = ARP_TL_E164 | (len & ARP_TL_LMASK);
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/* ah_tha */
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KM_COPY(tatm->address, cp, len);
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cp += len;
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if (tsub->address_format == T_ATM_ENDSYS_ADDR) {
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len = tsub->address_length;
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ahp->ah_tstl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
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/* ah_tsa */
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KM_COPY(tsub->address, cp, len);
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cp += len;
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} else
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ahp->ah_tstl = 0;
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break;
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default:
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ahp->ah_thtl = 0;
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ahp->ah_tstl = 0;
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}
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ahp->ah_tpln = sizeof(struct in_addr);
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/* ah_tpa */
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KM_COPY((caddr_t)tip, cp, sizeof(struct in_addr));
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/*
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* Finally, send the pdu to the vcc peer
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*/
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if (uniarp_print)
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uniarp_pdu_print(ivp, m, "send");
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err = atm_cm_cpcs_data(ivp->iv_arpconn, m);
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if (err) {
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/*
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* Didn't make it
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*/
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KB_FREEALL(m);
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return (1);
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}
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return (0);
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}
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/*
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* Issue an ATMARP NAK PDU
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*
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* Arguments:
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* uip pointer to IP interface
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* m pointer to ATMARP_REQ buffer chain
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* ivp pointer to vcc over which to send pdu
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*
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* Returns:
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* 0 PDU was successfully sent
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* else unable to send PDU
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*
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*/
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int
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uniarp_arp_nak(uip, m, ivp)
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struct uniip *uip;
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KBuffer *m;
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struct ipvcc *ivp;
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{
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struct atmarp_hdr *ahp;
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int err;
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/*
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* Get the fixed fields together
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*/
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if (KB_LEN(m) < sizeof(struct atmarp_hdr)) {
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KB_PULLUP(m, sizeof(struct atmarp_hdr), m);
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if (m == NULL)
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return (1);
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}
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KB_DATASTART(m, ahp, struct atmarp_hdr *);
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/*
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* Set new op-code
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*/
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ahp->ah_op = htons(ARP_NAK);
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/*
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* Finally, send the pdu to the vcc peer
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*/
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if (uniarp_print)
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uniarp_pdu_print(ivp, m, "send");
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err = atm_cm_cpcs_data(ivp->iv_arpconn, m);
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if (err) {
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/*
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* Didn't make it
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*/
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KB_FREEALL(m);
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return (1);
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}
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return (0);
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}
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/*
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* Issue an InATMARP Request PDU
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*
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* Arguments:
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* uip pointer to IP interface
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* tatm pointer to target ATM address
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* tsub pointer to target ATM subaddress
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* ivp pointer to vcc over which to send pdu
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*
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* Returns:
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* 0 PDU was successfully sent
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* else unable to send PDU
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*
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*/
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int
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uniarp_inarp_req(uip, tatm, tsub, ivp)
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struct uniip *uip;
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Atm_addr *tatm;
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Atm_addr *tsub;
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struct ipvcc *ivp;
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{
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KBuffer *m;
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struct atmarp_hdr *ahp;
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struct atm_nif *nip;
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struct ip_nif *inp;
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struct siginst *sip;
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char *cp;
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int len, err;
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inp = uip->uip_ipnif;
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nip = inp->inf_nif;
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sip = inp->inf_nif->nif_pif->pif_siginst;
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/*
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* Figure out how long pdu is going to be
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*/
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len = sizeof(struct atmarp_hdr) + sizeof(struct in_addr);
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switch (sip->si_addr.address_format) {
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case T_ATM_ENDSYS_ADDR:
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len += sip->si_addr.address_length;
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break;
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case T_ATM_E164_ADDR:
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len += sip->si_addr.address_length;
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if (sip->si_subaddr.address_format == T_ATM_ENDSYS_ADDR)
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len += sip->si_subaddr.address_length;
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break;
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}
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switch (tatm->address_format) {
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case T_ATM_ENDSYS_ADDR:
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len += tatm->address_length;
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break;
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case T_ATM_E164_ADDR:
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len += tatm->address_length;
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if (tsub->address_format == T_ATM_ENDSYS_ADDR)
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len += tsub->address_length;
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break;
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}
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/*
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* Get a buffer for pdu
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*/
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KB_ALLOCPKT(m, len, KB_F_NOWAIT, KB_T_DATA);
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if (m == NULL)
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return (1);
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/*
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* Place aligned pdu at end of buffer
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*/
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KB_TAILALIGN(m, len);
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KB_DATASTART(m, ahp, struct atmarp_hdr *);
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/*
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* Setup variable fields pointer
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*/
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cp = (char *)ahp + sizeof(struct atmarp_hdr);
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/*
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* Build fields
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*/
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ahp->ah_hrd = htons(ARP_ATMFORUM);
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ahp->ah_pro = htons(ETHERTYPE_IP);
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len = sip->si_addr.address_length;
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switch (sip->si_addr.address_format) {
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case T_ATM_ENDSYS_ADDR:
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ahp->ah_shtl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
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/* ah_sha */
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KM_COPY(sip->si_addr.address, cp, len - 1);
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((struct atm_addr_nsap *)cp)->aan_sel = nip->nif_sel;
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cp += len;
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ahp->ah_sstl = 0;
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break;
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case T_ATM_E164_ADDR:
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ahp->ah_shtl = ARP_TL_E164 | (len & ARP_TL_LMASK);
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/* ah_sha */
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KM_COPY(sip->si_addr.address, cp, len);
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cp += len;
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if (sip->si_subaddr.address_format == T_ATM_ENDSYS_ADDR) {
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len = sip->si_subaddr.address_length;
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ahp->ah_sstl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
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/* ah_ssa */
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KM_COPY(sip->si_subaddr.address, cp, len - 1);
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((struct atm_addr_nsap *)cp)->aan_sel = nip->nif_sel;
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cp += len;
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} else
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ahp->ah_sstl = 0;
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break;
|
|
|
|
default:
|
|
ahp->ah_shtl = 0;
|
|
ahp->ah_sstl = 0;
|
|
}
|
|
|
|
ahp->ah_op = htons(INARP_REQUEST);
|
|
ahp->ah_spln = sizeof(struct in_addr);
|
|
|
|
/* ah_spa */
|
|
KM_COPY((caddr_t)&(IA_SIN(inp->inf_addr)->sin_addr), cp,
|
|
sizeof(struct in_addr));
|
|
cp += sizeof(struct in_addr);
|
|
|
|
len = tatm->address_length;
|
|
switch (tatm->address_format) {
|
|
case T_ATM_ENDSYS_ADDR:
|
|
ahp->ah_thtl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
|
|
|
|
/* ah_tha */
|
|
KM_COPY(tatm->address, cp, len);
|
|
cp += len;
|
|
|
|
ahp->ah_tstl = 0;
|
|
break;
|
|
|
|
case T_ATM_E164_ADDR:
|
|
ahp->ah_thtl = ARP_TL_E164 | (len & ARP_TL_LMASK);
|
|
|
|
/* ah_tha */
|
|
KM_COPY(tatm->address, cp, len);
|
|
cp += len;
|
|
|
|
if (tsub->address_format == T_ATM_ENDSYS_ADDR) {
|
|
len = tsub->address_length;
|
|
ahp->ah_tstl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
|
|
|
|
/* ah_tsa */
|
|
KM_COPY(tsub->address, cp, len);
|
|
cp += len;
|
|
} else
|
|
ahp->ah_tstl = 0;
|
|
break;
|
|
|
|
default:
|
|
ahp->ah_thtl = 0;
|
|
ahp->ah_tstl = 0;
|
|
}
|
|
|
|
ahp->ah_tpln = 0;
|
|
|
|
/*
|
|
* Finally, send the pdu to the vcc peer
|
|
*/
|
|
if (uniarp_print)
|
|
uniarp_pdu_print(ivp, m, "send");
|
|
err = atm_cm_cpcs_data(ivp->iv_arpconn, m);
|
|
if (err) {
|
|
/*
|
|
* Didn't make it
|
|
*/
|
|
KB_FREEALL(m);
|
|
return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Issue an InATMARP Response PDU
|
|
*
|
|
* Arguments:
|
|
* uip pointer to IP interface
|
|
* tip pointer to target IP address
|
|
* tatm pointer to target ATM address
|
|
* tsub pointer to target ATM subaddress
|
|
* ivp pointer to vcc over which to send pdu
|
|
*
|
|
* Returns:
|
|
* 0 PDU was successfully sent
|
|
* else unable to send PDU
|
|
*
|
|
*/
|
|
int
|
|
uniarp_inarp_rsp(uip, tip, tatm, tsub, ivp)
|
|
struct uniip *uip;
|
|
struct in_addr *tip;
|
|
Atm_addr *tatm;
|
|
Atm_addr *tsub;
|
|
struct ipvcc *ivp;
|
|
{
|
|
KBuffer *m;
|
|
struct atmarp_hdr *ahp;
|
|
struct atm_nif *nip;
|
|
struct ip_nif *inp;
|
|
struct siginst *sip;
|
|
char *cp;
|
|
int len, err;
|
|
|
|
inp = uip->uip_ipnif;
|
|
nip = inp->inf_nif;
|
|
sip = inp->inf_nif->nif_pif->pif_siginst;
|
|
|
|
/*
|
|
* Figure out how long pdu is going to be
|
|
*/
|
|
len = sizeof(struct atmarp_hdr) + (2 * sizeof(struct in_addr));
|
|
switch (sip->si_addr.address_format) {
|
|
case T_ATM_ENDSYS_ADDR:
|
|
len += sip->si_addr.address_length;
|
|
break;
|
|
|
|
case T_ATM_E164_ADDR:
|
|
len += sip->si_addr.address_length;
|
|
if (sip->si_subaddr.address_format == T_ATM_ENDSYS_ADDR)
|
|
len += sip->si_subaddr.address_length;
|
|
break;
|
|
}
|
|
|
|
switch (tatm->address_format) {
|
|
case T_ATM_ENDSYS_ADDR:
|
|
len += tatm->address_length;
|
|
break;
|
|
|
|
case T_ATM_E164_ADDR:
|
|
len += tatm->address_length;
|
|
if (tsub->address_format == T_ATM_ENDSYS_ADDR)
|
|
len += tsub->address_length;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Get a buffer for pdu
|
|
*/
|
|
KB_ALLOCPKT(m, len, KB_F_NOWAIT, KB_T_DATA);
|
|
if (m == NULL)
|
|
return (1);
|
|
|
|
/*
|
|
* Place aligned pdu at end of buffer
|
|
*/
|
|
KB_TAILALIGN(m, len);
|
|
KB_DATASTART(m, ahp, struct atmarp_hdr *);
|
|
|
|
/*
|
|
* Setup variable fields pointer
|
|
*/
|
|
cp = (char *)ahp + sizeof(struct atmarp_hdr);
|
|
|
|
/*
|
|
* Build fields
|
|
*/
|
|
ahp->ah_hrd = htons(ARP_ATMFORUM);
|
|
ahp->ah_pro = htons(ETHERTYPE_IP);
|
|
len = sip->si_addr.address_length;
|
|
switch (sip->si_addr.address_format) {
|
|
case T_ATM_ENDSYS_ADDR:
|
|
ahp->ah_shtl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
|
|
|
|
/* ah_sha */
|
|
KM_COPY(sip->si_addr.address, cp, len - 1);
|
|
((struct atm_addr_nsap *)cp)->aan_sel = nip->nif_sel;
|
|
cp += len;
|
|
|
|
ahp->ah_sstl = 0;
|
|
break;
|
|
|
|
case T_ATM_E164_ADDR:
|
|
ahp->ah_shtl = ARP_TL_E164 | (len & ARP_TL_LMASK);
|
|
|
|
/* ah_sha */
|
|
KM_COPY(sip->si_addr.address, cp, len);
|
|
cp += len;
|
|
|
|
if (sip->si_subaddr.address_format == T_ATM_ENDSYS_ADDR) {
|
|
len = sip->si_subaddr.address_length;
|
|
ahp->ah_sstl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
|
|
|
|
/* ah_ssa */
|
|
KM_COPY(sip->si_subaddr.address, cp, len - 1);
|
|
((struct atm_addr_nsap *)cp)->aan_sel = nip->nif_sel;
|
|
cp += len;
|
|
} else
|
|
ahp->ah_sstl = 0;
|
|
break;
|
|
|
|
default:
|
|
ahp->ah_shtl = 0;
|
|
ahp->ah_sstl = 0;
|
|
}
|
|
|
|
ahp->ah_op = htons(INARP_REPLY);
|
|
ahp->ah_spln = sizeof(struct in_addr);
|
|
|
|
/* ah_spa */
|
|
KM_COPY((caddr_t)&(IA_SIN(inp->inf_addr)->sin_addr), cp,
|
|
sizeof(struct in_addr));
|
|
cp += sizeof(struct in_addr);
|
|
|
|
len = tatm->address_length;
|
|
switch (tatm->address_format) {
|
|
case T_ATM_ENDSYS_ADDR:
|
|
ahp->ah_thtl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
|
|
|
|
/* ah_tha */
|
|
KM_COPY(tatm->address, cp, len);
|
|
cp += len;
|
|
|
|
ahp->ah_tstl = 0;
|
|
break;
|
|
|
|
case T_ATM_E164_ADDR:
|
|
ahp->ah_thtl = ARP_TL_E164 | (len & ARP_TL_LMASK);
|
|
|
|
/* ah_tha */
|
|
KM_COPY(tatm->address, cp, len);
|
|
cp += len;
|
|
|
|
if (tsub->address_format == T_ATM_ENDSYS_ADDR) {
|
|
len = tsub->address_length;
|
|
ahp->ah_tstl = ARP_TL_NSAPA | (len & ARP_TL_LMASK);
|
|
|
|
/* ah_tsa */
|
|
KM_COPY(tsub->address, cp, len);
|
|
cp += len;
|
|
} else
|
|
ahp->ah_tstl = 0;
|
|
break;
|
|
|
|
default:
|
|
ahp->ah_thtl = 0;
|
|
ahp->ah_tstl = 0;
|
|
}
|
|
|
|
ahp->ah_tpln = sizeof(struct in_addr);
|
|
|
|
/* ah_tpa */
|
|
KM_COPY((caddr_t)tip, cp, sizeof(struct in_addr));
|
|
|
|
/*
|
|
* Finally, send the pdu to the vcc peer
|
|
*/
|
|
if (uniarp_print)
|
|
uniarp_pdu_print(ivp, m, "send");
|
|
err = atm_cm_cpcs_data(ivp->iv_arpconn, m);
|
|
if (err) {
|
|
/*
|
|
* Didn't make it
|
|
*/
|
|
KB_FREEALL(m);
|
|
return (1);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|