355 lines
6.6 KiB
C
355 lines
6.6 KiB
C
/*
|
|
*
|
|
* ===================================
|
|
* HARP | Host ATM Research Platform
|
|
* ===================================
|
|
*
|
|
*
|
|
* This Host ATM Research Platform ("HARP") file (the "Software") is
|
|
* made available by Network Computing Services, Inc. ("NetworkCS")
|
|
* "AS IS". NetworkCS does not provide maintenance, improvements or
|
|
* support of any kind.
|
|
*
|
|
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
|
|
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
|
|
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
|
|
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
|
|
* In no event shall NetworkCS be responsible for any damages, including
|
|
* but not limited to consequential damages, arising from or relating to
|
|
* any use of the Software or related support.
|
|
*
|
|
* Copyright 1994-1998 Network Computing Services, Inc.
|
|
*
|
|
* Copies of this Software may be made, however, the above copyright
|
|
* notice must be reproduced on all copies.
|
|
*
|
|
* @(#) $FreeBSD$
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* IP Over ATM Support
|
|
* -------------------
|
|
*
|
|
* Interface Manager
|
|
*
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/time.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/syslog.h>
|
|
#include <net/if.h>
|
|
#include <netinet/in.h>
|
|
#include <netatm/port.h>
|
|
#include <netatm/queue.h>
|
|
#include <netatm/atm.h>
|
|
#include <netatm/atm_sys.h>
|
|
#include <netatm/atm_sap.h>
|
|
#include <netatm/atm_cm.h>
|
|
#include <netatm/atm_if.h>
|
|
#include <netatm/atm_sigmgr.h>
|
|
#include <netatm/atm_stack.h>
|
|
#include <netatm/atm_pcb.h>
|
|
#include <netatm/atm_var.h>
|
|
|
|
#include <netatm/ipatm/ipatm_var.h>
|
|
#include <netatm/ipatm/ipatm_serv.h>
|
|
|
|
#ifndef lint
|
|
__RCSID("@(#) $FreeBSD$");
|
|
#endif
|
|
|
|
|
|
/*
|
|
* Local functions
|
|
*/
|
|
static void ipatm_closenif __P((struct ip_nif *));
|
|
|
|
|
|
/*
|
|
* Process Network Interface status change
|
|
*
|
|
* Called whenever a network interface status change is requested.
|
|
*
|
|
* Called at splnet.
|
|
*
|
|
* Arguments:
|
|
* cmd command code
|
|
* nip pointer to atm network interface control block
|
|
* arg command specific parameter
|
|
*
|
|
* Returns:
|
|
* 0 command successful
|
|
* errno command failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
ipatm_nifstat(cmd, nip, arg)
|
|
int cmd;
|
|
struct atm_nif *nip;
|
|
int arg;
|
|
{
|
|
struct in_ifaddr *ia;
|
|
struct siginst *sip;
|
|
struct ip_nif *inp;
|
|
int err = 0;
|
|
|
|
/*
|
|
* Look for corresponding IP interface
|
|
*/
|
|
for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
|
|
if (inp->inf_nif == nip)
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Process command
|
|
*/
|
|
switch (cmd) {
|
|
|
|
case NCM_ATTACH:
|
|
/*
|
|
* Make sure i/f isn't already attached
|
|
*/
|
|
if (inp != NULL) {
|
|
err = EEXIST;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Get a new interface block
|
|
*/
|
|
inp = (struct ip_nif *)atm_allocate(&ipatm_nifpool);
|
|
if (inp == NULL) {
|
|
err = ENOMEM;
|
|
break;
|
|
}
|
|
inp->inf_nif = nip;
|
|
inp->inf_state = IPNIF_ADDR;
|
|
inp->inf_arpnotify = ipatm_arpnotify;
|
|
inp->inf_ipinput = ipatm_ipinput;
|
|
inp->inf_createsvc = ipatm_createsvc;
|
|
LINK2TAIL(inp, struct ip_nif, ipatm_nif_head, inf_next);
|
|
break;
|
|
|
|
case NCM_DETACH:
|
|
/*
|
|
* Make sure i/f is attached
|
|
*/
|
|
if (inp == NULL) {
|
|
err = ENODEV;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Validate interface stuff
|
|
*/
|
|
if (Q_HEAD(inp->inf_vcq, struct ipvcc))
|
|
panic("ipatm_nifstat: ipvcc queue not empty");
|
|
|
|
/*
|
|
* If we're active, close all our VCCs and tell the
|
|
* interface service about the deactivation
|
|
*/
|
|
if (inp->inf_state == IPNIF_ACTIVE) {
|
|
|
|
ipatm_closenif(inp);
|
|
|
|
if (inp->inf_serv)
|
|
(void) (*inp->inf_serv->is_ifdact)(inp);
|
|
}
|
|
|
|
/*
|
|
* Clean up and free block
|
|
*/
|
|
UNLINK(inp, struct ip_nif, ipatm_nif_head, inf_next);
|
|
atm_free((caddr_t)inp);
|
|
break;
|
|
|
|
case NCM_SETADDR:
|
|
/*
|
|
* We only care about IP addresses
|
|
*/
|
|
#if (defined(BSD) && (BSD >= 199103))
|
|
if (((struct ifaddr *)arg)->ifa_addr->sa_family != AF_INET)
|
|
#else
|
|
if (((struct ifaddr *)arg)->ifa_addr.sa_family != AF_INET)
|
|
#endif
|
|
break;
|
|
|
|
/*
|
|
* Make sure i/f is there
|
|
*/
|
|
ia = (struct in_ifaddr *)arg;
|
|
if (inp == NULL)
|
|
panic("ipatm_nifstat: setaddr missing ip_nif");
|
|
|
|
/*
|
|
* Process new address
|
|
*/
|
|
switch (inp->inf_state) {
|
|
|
|
case IPNIF_SIGMGR:
|
|
case IPNIF_ADDR:
|
|
inp->inf_addr = ia;
|
|
|
|
/*
|
|
* If signalling manager is not set, wait for it
|
|
*/
|
|
sip = nip->nif_pif->pif_siginst;
|
|
if (sip == NULL) {
|
|
inp->inf_state = IPNIF_SIGMGR;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Otherwise, everything's set
|
|
*/
|
|
inp->inf_state = IPNIF_ACTIVE;
|
|
|
|
/*
|
|
* Tell interface service we're around
|
|
*/
|
|
if (sip->si_ipserv) {
|
|
inp->inf_serv = sip->si_ipserv;
|
|
err = (*inp->inf_serv->is_ifact)(inp);
|
|
}
|
|
|
|
/*
|
|
* Reset state if there's been a problem
|
|
*/
|
|
if (err) {
|
|
inp->inf_serv = NULL;
|
|
inp->inf_addr = NULL;
|
|
inp->inf_state = IPNIF_ADDR;
|
|
}
|
|
break;
|
|
|
|
case IPNIF_ACTIVE:
|
|
/*
|
|
* We dont support an address change
|
|
*/
|
|
err = EEXIST;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case NCM_SIGATTACH:
|
|
/*
|
|
* Make sure i/f is attached
|
|
*/
|
|
if (inp == NULL) {
|
|
err = ENODEV;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Are we waiting for the sigmgr attach??
|
|
*/
|
|
if (inp->inf_state != IPNIF_SIGMGR) {
|
|
/*
|
|
* No, nothing else to do
|
|
*/
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* OK, everything's set
|
|
*/
|
|
inp->inf_state = IPNIF_ACTIVE;
|
|
|
|
/*
|
|
* Tell interface service we're around
|
|
*/
|
|
sip = nip->nif_pif->pif_siginst;
|
|
if (sip->si_ipserv) {
|
|
inp->inf_serv = sip->si_ipserv;
|
|
err = (*inp->inf_serv->is_ifact)(inp);
|
|
}
|
|
|
|
/*
|
|
* Just report any problems, since a NCM_SIGDETACH will
|
|
* be coming down immediately
|
|
*/
|
|
break;
|
|
|
|
case NCM_SIGDETACH:
|
|
/*
|
|
* Make sure i/f is attached
|
|
*/
|
|
if (inp == NULL) {
|
|
err = ENODEV;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Are we currently active??
|
|
*/
|
|
if (inp->inf_state != IPNIF_ACTIVE) {
|
|
/*
|
|
* No, nothing else to do
|
|
*/
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Close all the IP VCCs for this interface
|
|
*/
|
|
ipatm_closenif(inp);
|
|
|
|
/*
|
|
* Tell interface service that i/f has gone down
|
|
*/
|
|
if (inp->inf_serv)
|
|
(void) (*inp->inf_serv->is_ifdact)(inp);
|
|
|
|
/*
|
|
* Just have to wait for another sigattach
|
|
*/
|
|
inp->inf_serv = NULL;
|
|
inp->inf_state = IPNIF_SIGMGR;
|
|
break;
|
|
|
|
default:
|
|
log(LOG_ERR, "ipatm_nifstat: unknown command %d\n", cmd);
|
|
}
|
|
|
|
return (err);
|
|
}
|
|
|
|
|
|
/*
|
|
* Close all VCCs on a Network Interface
|
|
*
|
|
* Called at splnet.
|
|
*
|
|
* Arguments:
|
|
* inp pointer to IP network interface
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
static void
|
|
ipatm_closenif(inp)
|
|
struct ip_nif *inp;
|
|
{
|
|
struct ipvcc *ivp, *inext;
|
|
|
|
/*
|
|
* Close each IP VCC on this interface
|
|
*/
|
|
for (ivp = Q_HEAD(inp->inf_vcq, struct ipvcc); ivp; ivp = inext) {
|
|
|
|
inext = Q_NEXT(ivp, struct ipvcc, iv_elem);
|
|
|
|
(void) ipatm_closevc(ivp, T_ATM_CAUSE_UNSPECIFIED_NORMAL);
|
|
}
|
|
}
|
|
|