1276 lines
26 KiB
C
1276 lines
26 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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* SPANS Signalling Manager
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* ---------------------------
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*
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* External interfaces to SPANS manager. Includes support for
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* running as a loadable kernel module.
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*
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*/
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#ifndef ATM_SPANS_MODULE
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#include "opt_atm.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/types.h>
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#include <sys/errno.h>
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#include <sys/malloc.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/syslog.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netatm/port.h>
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#include <netatm/queue.h>
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#include <netatm/atm.h>
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#include <netatm/atm_sys.h>
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#include <netatm/atm_sap.h>
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#include <netatm/atm_cm.h>
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#include <netatm/atm_if.h>
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#include <netatm/atm_vc.h>
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#include <netatm/atm_ioctl.h>
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#include <netatm/atm_sigmgr.h>
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#include <netatm/atm_stack.h>
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#include <netatm/atm_pcb.h>
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#include <netatm/atm_var.h>
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#include "spans_xdr.h"
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#include <netatm/spans/spans_var.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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* Global variables
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*/
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uma_zone_t spans_vc_zone;
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uma_zone_t spans_msg_zone;
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/*
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* Local functions
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*/
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static int spans_start(void);
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static int spans_stop(void);
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static int spans_attach(struct sigmgr *, struct atm_pif *);
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static int spans_detach(struct atm_pif *);
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static int spans_setup(Atm_connvc *, int *);
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static int spans_release(struct vccb *, int *);
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static int spans_accept(struct vccb *, int *);
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static int spans_reject(struct vccb *, int *);
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static int spans_ioctl(int, caddr_t, caddr_t);
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/*
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* Local variables
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*/
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static struct sigmgr *spans_mgr = NULL;
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/*
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* Initialize SPANS processing
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*
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* This will be called during module loading. We'll just register
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* the SPANS protocol descriptor and wait for a SPANS ATM interface
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* to come online.
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*
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* Arguments:
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* none
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*
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* Returns:
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* 0 startup was successful
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* errno startup failed - reason indicated
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*
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*/
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static int
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spans_start()
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{
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int err = 0;
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/*
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* Verify software version
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*/
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if (atm_version != ATM_VERSION) {
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log(LOG_ERR, "version mismatch: spans=%d.%d kernel=%d.%d\n",
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ATM_VERS_MAJ(ATM_VERSION),
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ATM_VERS_MIN(ATM_VERSION),
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ATM_VERS_MAJ(atm_version),
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ATM_VERS_MIN(atm_version));
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return (EINVAL);
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}
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spans_vc_zone = uma_zcreate("spans vc", sizeof(struct spans_vccb),
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NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
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uma_zone_set_max(spans_vc_zone, 50);
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spans_msg_zone = uma_zcreate("spans msg", sizeof(spans_msg), NULL,
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NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
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uma_zone_set_max(spans_msg_zone, 50);
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/*
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* Allocate protocol definition structure
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*/
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spans_mgr = malloc(sizeof(struct sigmgr), M_DEVBUF, M_NOWAIT|M_ZERO);
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if (spans_mgr == NULL) {
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err = ENOMEM;
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goto done;
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}
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/*
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* Initialize protocol invariant values
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*/
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spans_mgr->sm_proto = ATM_SIG_SPANS;
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spans_mgr->sm_attach = spans_attach;
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spans_mgr->sm_detach = spans_detach;
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spans_mgr->sm_setup = spans_setup;
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spans_mgr->sm_release = spans_release;
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spans_mgr->sm_accept = spans_accept;
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spans_mgr->sm_reject = spans_reject;
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spans_mgr->sm_free = spans_free;
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spans_mgr->sm_ioctl = spans_ioctl;
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/*
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* Register ourselves with system
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*/
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err = atm_sigmgr_register(spans_mgr);
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if (err)
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goto done;
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/*
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* Start the arp service
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*/
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spansarp_start();
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/*
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* Start up Connectionless Service
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*/
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err = spanscls_start();
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if (err)
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goto done;
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done:
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return (err);
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}
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/*
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* Halt SPANS processing
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*
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* This should be called just prior to unloading the module from
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* memory. All SPANS interfaces must be deregistered before the
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* protocol can be shutdown.
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*
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* Arguments:
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* none
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*
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* Returns:
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* 0 startup was successful
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* errno startup failed - reason indicated
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*
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*/
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static int
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spans_stop()
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{
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int err = 0;
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int s = splnet();
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/*
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* Is protocol even set up?
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*/
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if (spans_mgr) {
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/*
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* Any protocol instances still registered?
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*/
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if (spans_mgr->sm_prinst) {
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/* Yes, can't stop now */
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err = EBUSY;
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goto done;
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}
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/*
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* Stop Connectionless Service
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*/
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spanscls_stop();
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/*
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* De-register from system
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*/
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err = atm_sigmgr_deregister(spans_mgr);
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/*
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* Free up protocol block
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*/
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free(spans_mgr, M_DEVBUF);
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spans_mgr = NULL;
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/*
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* Free up our storage pools
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*/
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uma_zdestroy(spans_vc_zone);
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uma_zdestroy(spans_msg_zone);
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} else
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err = ENXIO;
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done:
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(void) splx(s);
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return (err);
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}
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/*
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* Attach a SPANS-controlled interface
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*
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* Each ATM physical interface must be attached with the signalling
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* manager for the interface's signalling protocol (via the
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* atm_sigmgr_attach function). This function will handle the
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* attachment for SPANS-controlled interfaces. A new SPANS protocol
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* instance will be created and then we'll just sit around waiting for
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* status or connection requests.
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*
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* Function must be called at splnet.
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*
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* Arguments:
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* smp pointer to SPANS signalling manager control block
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* pip pointer to ATM physical interface control block
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*
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* Returns:
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* 0 attach successful
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* errno attach failed - reason indicated
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*
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*/
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static int
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spans_attach(smp, pip)
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struct sigmgr *smp;
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struct atm_pif *pip;
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{
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int err = 0, n = 0, s;
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struct spans *spp = NULL;
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struct atm_nif *np;
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ATM_DEBUG2("spans_attach: smp=%p, pip=%p\n", smp, pip);
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/*
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* Count network interfaces attached to the physical interface.
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* If there are more or less than one, we have big problems.
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*/
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np = pip->pif_nif;
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while (np) {
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n++;
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np = np->nif_pnext;
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}
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if (n != 1) {
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err = ETOOMANYREFS;
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goto done;
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}
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/*
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* Allocate SPANS protocol instance control block
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*/
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spp = malloc(sizeof(struct spans), M_DEVBUF, M_NOWAIT|M_ZERO);
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if (spp == NULL) {
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err = ENOMEM;
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goto done;
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}
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/*
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* Set variables in SPANS protocol instance control block
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*/
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spp->sp_state = SPANS_INIT;
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spp->sp_h_epoch = time_second;
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spp->sp_s_epoch = 0;
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spp->sp_addr.address_format = T_ATM_ABSENT;
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spp->sp_addr.address_length = 0;
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spp->sp_subaddr.address_format = T_ATM_ABSENT;
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spp->sp_subaddr.address_length = 0;
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spp->sp_probe_ct = 0;
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spp->sp_alloc_vci = SPANS_MIN_VCI;
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spp->sp_alloc_vpi = SPANS_VPI;
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spp->sp_min_vci = SPANS_MIN_VCI;
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spp->sp_max_vci = pip->pif_maxvci;
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/*
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* Link instance into manager's chain
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*/
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LINK2TAIL((struct siginst *)spp, struct siginst, smp->sm_prinst,
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si_next);
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/*
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* Link in interface
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*/
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spp->sp_pif = pip;
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pip->pif_sigmgr = smp;
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pip->pif_siginst = (struct siginst *) spp;
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/*
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* Kick-start the SPANS protocol
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*/
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SPANS_TIMER(spp, 0);
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/*
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* Notify Connectionless Service
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*/
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err = spanscls_attach(spp);
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/*
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* Log the fact that we've attached
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*/
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if (!err)
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log(LOG_INFO, "spans: attached to interface %s%d\n",
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pip->pif_name, pip->pif_unit);
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done:
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/*
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* Reset our work if attach fails
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*/
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if (err) {
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if (spp) {
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SPANS_CANCEL(spp);
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UNLINK((struct siginst *)spp, struct siginst,
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smp->sm_prinst, si_next);
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free(spp, M_DEVBUF);
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}
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s = splimp();
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pip->pif_sigmgr = NULL;
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pip->pif_siginst = NULL;
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(void) splx(s);
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}
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return (err);
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}
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|
|
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/*
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* Detach a SPANS-controlled interface
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*
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* Each ATM physical interface may be detached from its signalling
|
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* manager (via the atm_sigmgr_detach function). This function will
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* handle the detachment for all SPANS-controlled interfaces. All
|
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* circuits will be immediately terminated.
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*
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* Function must be called at splnet.
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*
|
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* Arguments:
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* pip pointer to ATM physical interface control block
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*
|
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* Returns:
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* 0 detach successful
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* errno detach failed - reason indicated
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*
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*/
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static int
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spans_detach(pip)
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struct atm_pif *pip;
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{
|
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struct spans *spp;
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struct vccb *vcp, *vnext;
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Atm_connection *cop;
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int err;
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ATM_DEBUG1("spans_detach: pip=%p\n", pip);
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/*
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* Get SPANS protocol instance
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*/
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spp = (struct spans *)pip->pif_siginst;
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|
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/*
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* Return an error if we're already detaching
|
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*/
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if (spp->sp_state == SPANS_DETACH) {
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return(EALREADY);
|
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}
|
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|
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/*
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* Cancel any outstanding timer
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*/
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SPANS_CANCEL(spp);
|
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|
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/*
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* Notify Connectionless Service
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*/
|
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spanscls_detach(spp);
|
|
|
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/*
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* Terminate all of our VCCs
|
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*/
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for (vcp = Q_HEAD(spp->sp_vccq, struct vccb); vcp; vcp = vnext) {
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|
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vnext = Q_NEXT(vcp, struct vccb, vc_sigelem);
|
|
|
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/*
|
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* Don't close the signalling VCC yet
|
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*/
|
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if (vcp->vc_connvc && vcp->vc_connvc->cvc_conn ==
|
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spp->sp_conn)
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continue;
|
|
|
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/*
|
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* Close VCC and notify owner
|
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*/
|
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err = spans_clear_vcc(spp, (struct spans_vccb *)vcp);
|
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if (err) {
|
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log(LOG_ERR, "spans: error %d clearing VCCB %p\n",
|
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err, vcp);
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}
|
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}
|
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|
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/*
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* Now close the SPANS signalling VCC
|
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*/
|
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if ((cop = spp->sp_conn) != NULL) {
|
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err = atm_cm_release(cop, &spans_cause);
|
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if (err)
|
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ATM_DEBUG2(
|
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"spans_detach: close failed for SPANS signalling channel; cop=%p, err=%d\n",
|
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cop, err);
|
|
}
|
|
|
|
|
|
/*
|
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* Get rid of protocol instance if there are no VCCs queued
|
|
*/
|
|
if (Q_HEAD(spp->sp_vccq, struct vccb) == NULL) {
|
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struct sigmgr *smp = pip->pif_sigmgr;
|
|
|
|
pip->pif_sigmgr = NULL;
|
|
pip->pif_siginst = NULL;
|
|
UNLINK((struct siginst *)spp, struct siginst,
|
|
smp->sm_prinst, si_next);
|
|
free(spp, M_DEVBUF);
|
|
} else {
|
|
/*
|
|
* Otherwise, wait for protocol instance to be freed
|
|
* during spans_free processing for the last queued VCC.
|
|
*/
|
|
spp->sp_state = SPANS_DETACH;
|
|
}
|
|
|
|
/*
|
|
* Log the fact that we've detached
|
|
*/
|
|
log(LOG_INFO, "spans: detached from interface %s%d\n",
|
|
pip->pif_name, pip->pif_unit);
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Open a SPANS ATM Connection
|
|
*
|
|
* All service user requests to open a VC connection (via
|
|
* atm_open_connection) over an ATM interface attached to the SPANS
|
|
* signalling manager are handled here.
|
|
*
|
|
* Function will be called at splnet.
|
|
*
|
|
* Arguments:
|
|
* cvp pointer to user's requested connection parameters
|
|
* errp pointer to an int for extended error information
|
|
*
|
|
* Returns:
|
|
* CALL_PROCEEDING connection establishment is in progress
|
|
* CALL_FAILED connection establishment failed
|
|
* CALL_CONNECTED connection has been successfully established
|
|
*
|
|
*/
|
|
static int
|
|
spans_setup(cvp, errp)
|
|
Atm_connvc *cvp;
|
|
int *errp;
|
|
{
|
|
struct atm_pif *pip = cvp->cvc_attr.nif->nif_pif;
|
|
struct spans *spp = (struct spans *)pip->pif_siginst;
|
|
int rc = 0;
|
|
|
|
ATM_DEBUG1("spans_setup: cvp=%p\n", cvp);
|
|
|
|
/*
|
|
* Intialize the returned error code
|
|
*/
|
|
*errp = 0;
|
|
|
|
/*
|
|
* Open the connection
|
|
*/
|
|
switch (cvp->cvc_attr.called.addr.address_format) {
|
|
case T_ATM_PVC_ADDR:
|
|
/*
|
|
* Create a PVC
|
|
*/
|
|
*errp = spans_open_vcc(spp, cvp);
|
|
rc = (*errp ? CALL_FAILED : CALL_CONNECTED);
|
|
break;
|
|
|
|
case T_ATM_SPANS_ADDR:
|
|
|
|
/*
|
|
* Create an SVC
|
|
*/
|
|
*errp = spans_open_vcc(spp, cvp);
|
|
rc = (*errp ? CALL_FAILED : CALL_PROCEEDING);
|
|
break;
|
|
|
|
default:
|
|
*errp = EPROTONOSUPPORT;
|
|
rc = CALL_FAILED;
|
|
}
|
|
|
|
return (rc);
|
|
}
|
|
|
|
|
|
/*
|
|
* Close a SPANS ATM Connection
|
|
*
|
|
* All service user requests to terminate a previously open VC
|
|
* connection (via the atm_close_connection function), which is running
|
|
* over an interface attached to the SPANS signalling manager, are
|
|
* handled here.
|
|
*
|
|
* Function will be called at splnet.
|
|
*
|
|
* Arguments:
|
|
* vcp pointer to connection's VC control block
|
|
* errp pointer to an int for extended error information
|
|
*
|
|
* Returns:
|
|
* CALL_PROCEEDING connection termination is in progress
|
|
* CALL_FAILED connection termination failed
|
|
* CALL_CLEARED connection has been successfully terminated
|
|
*
|
|
*/
|
|
static int
|
|
spans_release(vcp, errp)
|
|
struct vccb *vcp;
|
|
int *errp;
|
|
{
|
|
int rc = 0;
|
|
struct atm_pif *pip = vcp->vc_pif;
|
|
struct spans *spp = (struct spans *)pip->pif_siginst;
|
|
|
|
ATM_DEBUG1("spans_release: vcp=%p\n", vcp);
|
|
|
|
/*
|
|
* Initialize returned error code
|
|
*/
|
|
*errp = 0;
|
|
|
|
/*
|
|
* Make sure VCC is open
|
|
*/
|
|
if ((vcp->vc_sstate == SPANS_VC_NULL) ||
|
|
(vcp->vc_sstate == SPANS_VC_CLOSE) ||
|
|
(vcp->vc_sstate == SPANS_VC_FREE) ||
|
|
(vcp->vc_ustate == VCCU_NULL) ||
|
|
(vcp->vc_ustate == VCCU_CLOSED)) {
|
|
*errp = EALREADY;
|
|
return(CALL_FAILED);
|
|
}
|
|
|
|
/*
|
|
* Validate the connection type (PVC or SVC)
|
|
*/
|
|
if (!(vcp->vc_type & (VCC_PVC | VCC_SVC))) {
|
|
*errp = EPROTONOSUPPORT;
|
|
return(CALL_FAILED);
|
|
}
|
|
|
|
/*
|
|
* Close the VCCB
|
|
*/
|
|
*errp = spans_close_vcc(spp, (struct spans_vccb *)vcp, FALSE);
|
|
|
|
/*
|
|
* Set the return code
|
|
*/
|
|
if (vcp->vc_type & VCC_PVC) {
|
|
rc = (*errp ? CALL_FAILED : CALL_CLEARED);
|
|
} else {
|
|
rc = (*errp ? CALL_FAILED : CALL_PROCEEDING);
|
|
}
|
|
|
|
return (rc);
|
|
}
|
|
|
|
|
|
/*
|
|
* Accept a SPANS Open from a remote host
|
|
*
|
|
* A user calls this routine (via the atm_accept_call function)
|
|
* after it is notified that an open request was received for it.
|
|
*
|
|
* Function will be called at splnet.
|
|
*
|
|
* Arguments:
|
|
* vcp pointer to user's VCCB
|
|
* errp pointer to an int for extended error information
|
|
*
|
|
* Returns:
|
|
* CALL_PROCEEDING connection establishment is in progress
|
|
* CALL_FAILED connection establishment failed
|
|
* CALL_CONNECTED connection has been successfully established
|
|
*
|
|
*/
|
|
static int
|
|
spans_accept(vcp, errp)
|
|
struct vccb *vcp;
|
|
int *errp;
|
|
{
|
|
struct atm_pif *pip = vcp->vc_pif;
|
|
struct spans *spp = (struct spans *)pip->pif_siginst;
|
|
struct spans_vccb *svp = (struct spans_vccb *)vcp;
|
|
|
|
ATM_DEBUG1("spans_accept: vcp=%p\n", vcp);
|
|
|
|
/*
|
|
* Initialize the returned error code
|
|
*/
|
|
*errp = 0;
|
|
|
|
/*
|
|
* Return an error if we're detaching
|
|
*/
|
|
if (spp->sp_state == SPANS_DETACH) {
|
|
*errp = ENETDOWN;
|
|
ATM_DEBUG0("spans_accept: detaching\n");
|
|
return(CALL_FAILED);
|
|
}
|
|
|
|
/*
|
|
* Respond to the open request
|
|
*/
|
|
*errp = spans_send_open_rsp(spp, svp, SPANS_OK);
|
|
if (*errp) {
|
|
ATM_DEBUG0("spans_accept: spans_send_open_rsp failed\n");
|
|
goto failed;
|
|
}
|
|
|
|
/*
|
|
* Update the VCC states
|
|
*/
|
|
svp->sv_sstate = SPANS_VC_OPEN;
|
|
svp->sv_ustate = VCCU_OPEN;
|
|
|
|
return(CALL_CONNECTED);
|
|
|
|
failed:
|
|
/*
|
|
* On error, free the VCCB and return CALL_FAILED
|
|
*/
|
|
svp->sv_sstate = SPANS_VC_FREE;
|
|
svp->sv_ustate = VCCU_CLOSED;
|
|
DEQUEUE(svp, struct spans_vccb, sv_sigelem, spp->sp_vccq);
|
|
spans_free((struct vccb *)svp);
|
|
|
|
return(CALL_FAILED);
|
|
}
|
|
|
|
|
|
/*
|
|
* Reject a SPANS Open from a remote host
|
|
*
|
|
* A user calls this routine (via the atm_reject_call function)
|
|
* after it is notified that an open request was received for it.
|
|
*
|
|
* Function will be called at splnet.
|
|
*
|
|
* Arguments:
|
|
* vcp pointer to user's VCCB
|
|
* errp pointer to an int for extended error information
|
|
*
|
|
* Returns:
|
|
* CALL_CLEARED call request rejected
|
|
* CALL_FAILED call rejection failed
|
|
*
|
|
*/
|
|
static int
|
|
spans_reject(vcp, errp)
|
|
struct vccb *vcp;
|
|
int *errp;
|
|
{
|
|
struct atm_pif *pip = vcp->vc_pif;
|
|
struct spans *spp = (struct spans *)pip->pif_siginst;
|
|
struct spans_vccb *svp = (struct spans_vccb *)vcp;
|
|
|
|
ATM_DEBUG1("spans_reject: vcp=%p\n", vcp);
|
|
|
|
/*
|
|
* Initialize the returned error code
|
|
*/
|
|
*errp = 0;
|
|
|
|
/*
|
|
* Return an error if we're detaching
|
|
*/
|
|
if (spp->sp_state == SPANS_DETACH) {
|
|
*errp = ENETDOWN;
|
|
ATM_DEBUG0("spans_reject: detaching\n");
|
|
return(CALL_FAILED);
|
|
}
|
|
|
|
ATM_DEBUG1("spans_reject: cause code is %d\n",
|
|
vcp->vc_connvc->cvc_attr.cause.v.cause_value);
|
|
|
|
/*
|
|
* Clean up the VCCB--the connection manager will free it
|
|
* spans_close_vcc will send a SPANS open response
|
|
*/
|
|
if ((*errp = spans_close_vcc(spp, svp, TRUE)) != 0) {
|
|
ATM_DEBUG0("spans_reject: spans_close_vcc failed\n");
|
|
return(CALL_FAILED);
|
|
}
|
|
|
|
return(CALL_CLEARED);
|
|
}
|
|
|
|
|
|
/*
|
|
* Abort a SPANS ATM Connection
|
|
*
|
|
* All (non-user) requests to abort a previously open VC connection (via
|
|
* the atm_abort_connection function), which is running over an
|
|
* interface attached to the SPANS signalling manager, are handled here.
|
|
* The VCC owner will be notified of the request, in order to initiate
|
|
* termination of the connection.
|
|
*
|
|
* Function will be called at splnet.
|
|
*
|
|
* Arguments:
|
|
* vcp pointer to connection's VC control block
|
|
*
|
|
* Returns:
|
|
* 0 connection release was succesful
|
|
* errno connection release failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
spans_abort(vcp)
|
|
struct vccb *vcp;
|
|
{
|
|
|
|
/*
|
|
* Make sure VCC is available
|
|
*/
|
|
if ((vcp->vc_sstate == SPANS_VC_NULL) ||
|
|
(vcp->vc_sstate == SPANS_VC_CLOSE) ||
|
|
(vcp->vc_sstate == SPANS_VC_FREE) ||
|
|
(vcp->vc_ustate == VCCU_NULL) ||
|
|
(vcp->vc_ustate == VCCU_CLOSED)) {
|
|
return(EALREADY);
|
|
}
|
|
|
|
/*
|
|
* Only abort once
|
|
*/
|
|
if (vcp->vc_sstate == SPANS_VC_ABORT) {
|
|
return (EALREADY);
|
|
}
|
|
|
|
/*
|
|
* Cancel any timer that might be running
|
|
*/
|
|
SPANS_VC_CANCEL(vcp);
|
|
|
|
/*
|
|
* Set immediate timer to schedule connection termination
|
|
*/
|
|
vcp->vc_sstate = SPANS_VC_ABORT;
|
|
SPANS_VC_TIMER(vcp, 0);
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Free SPANS ATM connection resources
|
|
*
|
|
* All service user requests to free the resources of a closed
|
|
* VCC connection (via the atm_free_connection function), which
|
|
* is running over an interface attached to the SigPVC signalling
|
|
* manager, are handled here.
|
|
*
|
|
* Function will be called at splnet.
|
|
*
|
|
* Arguments:
|
|
* vcp pointer to connection's VC control block
|
|
*
|
|
* Returns:
|
|
* 0 connection free was successful
|
|
* errno connection free failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
spans_free(vcp)
|
|
struct vccb *vcp;
|
|
{
|
|
struct atm_pif *pip = vcp->vc_pif;
|
|
struct spans *spp = (struct spans *)pip->pif_siginst;
|
|
|
|
ATM_DEBUG1("spans_free: vcp = %p\n", vcp);
|
|
|
|
/*
|
|
* Make sure VCC has been closed
|
|
*/
|
|
if ((vcp->vc_ustate != VCCU_CLOSED) ||
|
|
(vcp->vc_sstate != SPANS_VC_FREE)) {
|
|
ATM_DEBUG2("spans_free: bad state, sstate=%d, ustate=%d\n",
|
|
vcp->vc_sstate, vcp->vc_ustate);
|
|
return(EEXIST);
|
|
}
|
|
|
|
/*
|
|
* Remove VCCB from protocol queue
|
|
*/
|
|
DEQUEUE(vcp, struct vccb, vc_sigelem, spp->sp_vccq);
|
|
|
|
/*
|
|
* Free VCCB storage
|
|
*/
|
|
vcp->vc_ustate = VCCU_NULL;
|
|
vcp->vc_sstate = SPANS_VC_NULL;
|
|
uma_zfree(spans_vc_zone, vcp);
|
|
|
|
/*
|
|
* If we're detaching and this was the last VCC queued,
|
|
* get rid of the protocol instance
|
|
*/
|
|
if ((spp->sp_state == SPANS_DETACH) &&
|
|
(Q_HEAD(spp->sp_vccq, struct vccb) == NULL)) {
|
|
struct sigmgr *smp = pip->pif_sigmgr;
|
|
|
|
pip->pif_sigmgr = NULL;
|
|
pip->pif_siginst = NULL;
|
|
UNLINK((struct siginst *)spp, struct siginst, smp->sm_prinst,
|
|
si_next);
|
|
free(spp, M_DEVBUF);
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* SPANS IOCTL support
|
|
*
|
|
* Function will be called at splnet.
|
|
*
|
|
* Arguments:
|
|
* code PF_ATM sub-operation code
|
|
* data pointer to code specific parameter data area
|
|
* arg1 pointer to code specific argument
|
|
*
|
|
* Returns:
|
|
* 0 request procesed
|
|
* errno error processing request - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
spans_ioctl(code, data, arg1)
|
|
int code;
|
|
caddr_t data;
|
|
caddr_t arg1;
|
|
{
|
|
struct atmdelreq *adp;
|
|
struct atminfreq *aip;
|
|
struct spans *spp;
|
|
struct spans_vccb *svp;
|
|
struct air_vcc_rsp rsp;
|
|
Atm_connection *cop;
|
|
int buf_len, err = 0, i, vpi, vci;
|
|
caddr_t buf_addr;
|
|
|
|
|
|
switch (code) {
|
|
|
|
case AIOCS_DEL_PVC:
|
|
case AIOCS_DEL_SVC:
|
|
/*
|
|
* Delete a VCC
|
|
*/
|
|
adp = (struct atmdelreq *)data;
|
|
spp = (struct spans *)arg1;
|
|
|
|
/*
|
|
* Don't let a user close the SPANS signalling VC or
|
|
* the SPANS CLS VC
|
|
*/
|
|
vpi = adp->adr_pvc_vpi;
|
|
vci = adp->adr_pvc_vci;
|
|
if ((vpi == SPANS_SIG_VPI && vci == SPANS_SIG_VCI) ||
|
|
(vpi == SPANS_CLS_VPI &&
|
|
vci == SPANS_CLS_VCI))
|
|
return(EINVAL);
|
|
|
|
/*
|
|
* Find requested VCC
|
|
*/
|
|
for (svp = Q_HEAD(spp->sp_vccq, struct spans_vccb); svp;
|
|
svp = Q_NEXT(svp, struct spans_vccb, sv_sigelem)) {
|
|
if ((svp->sv_vpi == vpi) && (svp->sv_vci == vci))
|
|
break;
|
|
}
|
|
if (svp == NULL)
|
|
return (ENOENT);
|
|
|
|
/*
|
|
* Check VCC type
|
|
*/
|
|
switch (code) {
|
|
case AIOCS_DEL_PVC:
|
|
if (!(svp->sv_type & VCC_PVC)) {
|
|
return(EINVAL);
|
|
}
|
|
break;
|
|
case AIOCS_DEL_SVC:
|
|
if (!(svp->sv_type & VCC_SVC)) {
|
|
return(EINVAL);
|
|
}
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Schedule VCC termination
|
|
*/
|
|
err = spans_abort((struct vccb *)svp);
|
|
break;
|
|
|
|
case AIOCS_INF_VCC:
|
|
/*
|
|
* Return VCC information
|
|
*/
|
|
aip = (struct atminfreq *)data;
|
|
spp = (struct spans *)arg1;
|
|
|
|
buf_addr = aip->air_buf_addr;
|
|
buf_len = aip->air_buf_len;
|
|
|
|
/*
|
|
* Loop through the VCC queue
|
|
*/
|
|
for (svp = Q_HEAD(spp->sp_vccq, struct spans_vccb); svp;
|
|
svp = Q_NEXT(svp, struct spans_vccb, sv_sigelem)) {
|
|
/*
|
|
* Make sure there's room in the user's buffer
|
|
*/
|
|
if (buf_len < sizeof(rsp)) {
|
|
err = ENOSPC;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Fill out the response struct for the VCC
|
|
*/
|
|
(void) snprintf(rsp.avp_intf,
|
|
sizeof(rsp.avp_intf), "%s%d",
|
|
spp->sp_pif->pif_name,
|
|
spp->sp_pif->pif_unit);
|
|
rsp.avp_vpi = svp->sv_vpi;
|
|
rsp.avp_vci = svp->sv_vci;
|
|
rsp.avp_type = svp->sv_type;
|
|
rsp.avp_aal = svp->sv_connvc->cvc_attr.aal.type;
|
|
rsp.avp_sig_proto = svp->sv_proto;
|
|
cop = svp->sv_connvc->cvc_conn;
|
|
if (cop)
|
|
rsp.avp_encaps = cop->co_mpx;
|
|
else
|
|
rsp.avp_encaps = 0;
|
|
rsp.avp_state = svp->sv_sstate;
|
|
bzero(rsp.avp_owners, sizeof(rsp.avp_owners));
|
|
for (i = 0; cop && i < sizeof(rsp.avp_owners);
|
|
cop = cop->co_next,
|
|
i += T_ATM_APP_NAME_LEN+1) {
|
|
strncpy(&rsp.avp_owners[i],
|
|
cop->co_endpt->ep_getname(cop->co_toku),
|
|
T_ATM_APP_NAME_LEN);
|
|
}
|
|
rsp.avp_daddr.address_format = T_ATM_SPANS_ADDR;
|
|
rsp.avp_daddr.address_length =
|
|
sizeof(Atm_addr_spans);
|
|
if (svp->sv_type & VCC_OUT) {
|
|
spans_addr_copy(&svp->sv_conn.con_dst,
|
|
rsp.avp_daddr.address);
|
|
} else {
|
|
spans_addr_copy(&svp->sv_conn.con_src,
|
|
rsp.avp_daddr.address);
|
|
}
|
|
rsp.avp_dsubaddr.address_format = T_ATM_ABSENT;
|
|
rsp.avp_dsubaddr.address_length = 0;
|
|
rsp.avp_ipdus = svp->sv_ipdus;
|
|
rsp.avp_opdus = svp->sv_opdus;
|
|
rsp.avp_ibytes = svp->sv_ibytes;
|
|
rsp.avp_obytes = svp->sv_obytes;
|
|
rsp.avp_ierrors = svp->sv_ierrors;
|
|
rsp.avp_oerrors = svp->sv_oerrors;
|
|
rsp.avp_tstamp = svp->sv_tstamp;
|
|
|
|
/*
|
|
* Copy the response into the user's buffer
|
|
*/
|
|
if ((err = copyout((caddr_t)&rsp, buf_addr,
|
|
sizeof(rsp))) != 0)
|
|
break;
|
|
buf_addr += sizeof(rsp);
|
|
buf_len -= sizeof(rsp);
|
|
}
|
|
|
|
/*
|
|
* Update the buffer pointer and length
|
|
*/
|
|
aip->air_buf_addr = buf_addr;
|
|
aip->air_buf_len = buf_len;
|
|
break;
|
|
|
|
case AIOCS_ADD_ARP:
|
|
case AIOCS_DEL_ARP:
|
|
case AIOCS_INF_ARP:
|
|
case AIOCS_INF_ASV:
|
|
/*
|
|
* ARP specific ioctl's
|
|
*/
|
|
err = spansarp_ioctl(code, data, arg1);
|
|
break;
|
|
|
|
default:
|
|
err = EOPNOTSUPP;
|
|
}
|
|
|
|
return (err);
|
|
}
|
|
|
|
|
|
#ifdef ATM_SPANS_MODULE
|
|
/*
|
|
*******************************************************************
|
|
*
|
|
* Loadable Module Support
|
|
*
|
|
*******************************************************************
|
|
*/
|
|
static int spans_doload(void);
|
|
static int spans_dounload(void);
|
|
|
|
/*
|
|
* Generic module load processing
|
|
*
|
|
* This function is called by an OS-specific function when this
|
|
* module is being loaded.
|
|
*
|
|
* Arguments:
|
|
* none
|
|
*
|
|
* Returns:
|
|
* 0 load was successful
|
|
* errno load failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
spans_doload()
|
|
{
|
|
int err = 0;
|
|
|
|
/*
|
|
* Start us up
|
|
*/
|
|
err = spans_start();
|
|
if (err)
|
|
/* Problems, clean up */
|
|
(void)spans_stop();
|
|
|
|
return (err);
|
|
}
|
|
|
|
|
|
/*
|
|
* Generic module unload processing
|
|
*
|
|
* This function is called by an OS-specific function when this
|
|
* module is being unloaded.
|
|
*
|
|
* Arguments:
|
|
* none
|
|
*
|
|
* Returns:
|
|
* 0 unload was successful
|
|
* errno unload failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
spans_dounload()
|
|
{
|
|
int err = 0;
|
|
|
|
/*
|
|
* OK, try to clean up our mess
|
|
*/
|
|
err = spans_stop();
|
|
|
|
return (err);
|
|
}
|
|
|
|
|
|
|
|
|
|
#include <sys/exec.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/lkm.h>
|
|
|
|
/*
|
|
* Loadable miscellaneous module description
|
|
*/
|
|
MOD_MISC(spans);
|
|
|
|
|
|
/*
|
|
* Loadable module support "load" entry point
|
|
*
|
|
* This is the routine called by the lkm driver whenever the
|
|
* modload(1) command is issued for this module.
|
|
*
|
|
* Arguments:
|
|
* lkmtp pointer to lkm drivers's structure
|
|
* cmd lkm command code
|
|
*
|
|
* Returns:
|
|
* 0 command was successful
|
|
* errno command failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
spans_load(lkmtp, cmd)
|
|
struct lkm_table *lkmtp;
|
|
int cmd;
|
|
{
|
|
return(spans_doload());
|
|
}
|
|
|
|
|
|
/*
|
|
* Loadable module support "unload" entry point
|
|
*
|
|
* This is the routine called by the lkm driver whenever the
|
|
* modunload(1) command is issued for this module.
|
|
*
|
|
* Arguments:
|
|
* lkmtp pointer to lkm drivers's structure
|
|
* cmd lkm command code
|
|
*
|
|
* Returns:
|
|
* 0 command was successful
|
|
* errno command failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
spans_unload(lkmtp, cmd)
|
|
struct lkm_table *lkmtp;
|
|
int cmd;
|
|
{
|
|
return(spans_dounload());
|
|
}
|
|
|
|
|
|
/*
|
|
* Loadable module support entry point
|
|
*
|
|
* This is the routine called by the lkm driver for all loadable module
|
|
* functions for this driver. This routine name must be specified
|
|
* on the modload(1) command. This routine will be called whenever the
|
|
* modload(1), modunload(1) or modstat(1) commands are issued for this
|
|
* module.
|
|
*
|
|
* Arguments:
|
|
* lkmtp pointer to lkm drivers's structure
|
|
* cmd lkm command code
|
|
* ver lkm version
|
|
*
|
|
* Returns:
|
|
* 0 command was successful
|
|
* errno command failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
spans_mod(lkmtp, cmd, ver)
|
|
struct lkm_table *lkmtp;
|
|
int cmd;
|
|
int ver;
|
|
{
|
|
MOD_DISPATCH(spans, lkmtp, cmd, ver,
|
|
spans_load, spans_unload, lkm_nullcmd);
|
|
}
|
|
|
|
#else /* !ATM_SPANS_MODULE */
|
|
|
|
/*
|
|
*******************************************************************
|
|
*
|
|
* Kernel Compiled Module Support
|
|
*
|
|
*******************************************************************
|
|
*/
|
|
static void spans_doload(void *);
|
|
|
|
SYSINIT(atmspans, SI_SUB_PROTO_END, SI_ORDER_ANY, spans_doload, NULL)
|
|
|
|
/*
|
|
* Kernel initialization
|
|
*
|
|
* Arguments:
|
|
* arg Not used
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
static void
|
|
spans_doload(void *arg)
|
|
{
|
|
int err = 0;
|
|
|
|
/*
|
|
* Start us up
|
|
*/
|
|
err = spans_start();
|
|
if (err) {
|
|
/* Problems, clean up */
|
|
(void)spans_stop();
|
|
|
|
log(LOG_ERR, "ATM SPANS unable to initialize (%d)!!\n", err);
|
|
}
|
|
return;
|
|
}
|
|
#endif /* ATM_SPANS_MODULE */
|
|
|