6fd807e4f4
Host ATM Research Platform (HARP), Network Computing Services, Inc. This software was developed with the support of the Defense Advanced Research Projects Agency (DARPA).
1203 lines
24 KiB
C
1203 lines
24 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.
|
|
*
|
|
* @(#) $Id: atm_if.c,v 1.13 1998/07/23 21:43:55 root Exp $
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Core ATM Services
|
|
* -----------------
|
|
*
|
|
* ATM interface management
|
|
*
|
|
*/
|
|
|
|
#ifndef lint
|
|
static char *RCSid = "@(#) $Id: atm_if.c,v 1.13 1998/07/23 21:43:55 root Exp $";
|
|
#endif
|
|
|
|
#include <netatm/kern_include.h>
|
|
|
|
|
|
#if (defined(BSD) && (BSD < 199506))
|
|
extern int ifqmaxlen;
|
|
#endif
|
|
|
|
/*
|
|
* Local functions
|
|
*/
|
|
static int atm_physif_ioctl __P((int, caddr_t, caddr_t));
|
|
#if (defined(BSD) && (BSD >= 199306))
|
|
static int atm_netif_rtdel __P((struct radix_node *, void *));
|
|
#endif
|
|
static int atm_if_ioctl __P((struct ifnet *, u_long, caddr_t));
|
|
static int atm_ifparse __P((char *, char *, int, int *));
|
|
|
|
/*
|
|
* Local variables
|
|
*/
|
|
static int (*atm_ifouttbl[AF_MAX+1])
|
|
__P((struct ifnet *, KBuffer *, struct sockaddr *))
|
|
= {NULL};
|
|
|
|
|
|
/*
|
|
* Register an ATM physical interface
|
|
*
|
|
* Each ATM device interface must register itself here upon completing
|
|
* its internal initialization. This applies to both linked and loaded
|
|
* device drivers. The interface must be registered before a signalling
|
|
* manager can be attached.
|
|
*
|
|
* Arguments:
|
|
* cup pointer to interface's common unit structure
|
|
* name pointer to device name string
|
|
* sdp pointer to interface's stack services
|
|
*
|
|
* Returns:
|
|
* 0 registration successful
|
|
* errno registration failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
atm_physif_register(cup, name, sdp)
|
|
Cmn_unit *cup;
|
|
char *name;
|
|
struct stack_defn *sdp;
|
|
{
|
|
struct atm_pif *pip;
|
|
int s;
|
|
|
|
/*
|
|
* See if we need to be initialized
|
|
*/
|
|
if (!atm_init)
|
|
atm_initialize();
|
|
|
|
/*
|
|
* Make sure we're not already registered
|
|
*/
|
|
if (cup->cu_flags & CUF_REGISTER) {
|
|
return (EALREADY);
|
|
}
|
|
|
|
s = splnet();
|
|
|
|
/*
|
|
* Make sure an interface is only registered once
|
|
*/
|
|
for (pip = atm_interface_head; pip != NULL; pip = pip->pif_next) {
|
|
if ((cup->cu_unit == pip->pif_unit) &&
|
|
(strcmp(name, pip->pif_name) == 0)) {
|
|
(void) splx(s);
|
|
return (EEXIST);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Fill in physical interface parameters
|
|
*/
|
|
pip = &cup->cu_pif;
|
|
pip->pif_name = name;
|
|
pip->pif_unit = cup->cu_unit;
|
|
pip->pif_flags = PIF_UP;
|
|
pip->pif_services = sdp;
|
|
pip->pif_ioctl = atm_physif_ioctl;
|
|
|
|
/*
|
|
* Link in the interface and mark us registered
|
|
*/
|
|
LINK2TAIL(pip, struct atm_pif, atm_interface_head, pif_next);
|
|
cup->cu_flags |= CUF_REGISTER;
|
|
|
|
(void) splx(s);
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* De-register an ATM physical interface
|
|
*
|
|
* Each ATM interface must de-register itself before downing the interface.
|
|
* The interface's signalling manager will be detached and any network
|
|
* interface and VCC control blocks will be freed.
|
|
*
|
|
* Arguments:
|
|
* cup pointer to interface's common unit structure
|
|
*
|
|
* Returns:
|
|
* 0 de-registration successful
|
|
* errno de-registration failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
atm_physif_deregister(cup)
|
|
Cmn_unit *cup;
|
|
{
|
|
struct atm_pif *pip = (struct atm_pif *)&cup->cu_pif;
|
|
Cmn_vcc *cvp;
|
|
int err;
|
|
int s = splnet();
|
|
|
|
/*
|
|
* Detach and deregister, if needed
|
|
*/
|
|
if ((cup->cu_flags & CUF_REGISTER)) {
|
|
|
|
/*
|
|
* Detach from signalling manager
|
|
*/
|
|
if (pip->pif_sigmgr != NULL) {
|
|
err = atm_sigmgr_detach(pip);
|
|
if (err && (err != ENOENT)) {
|
|
(void) splx(s);
|
|
return (err);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Make sure signalling manager is detached
|
|
*/
|
|
if (pip->pif_sigmgr != NULL) {
|
|
(void) splx(s);
|
|
return (EBUSY);
|
|
}
|
|
|
|
/*
|
|
* Unlink interface
|
|
*/
|
|
UNLINK(pip, struct atm_pif, atm_interface_head, pif_next);
|
|
|
|
cup->cu_flags &= ~CUF_REGISTER;
|
|
}
|
|
|
|
/*
|
|
* Free all of our network interfaces
|
|
*/
|
|
atm_physif_freenifs(pip);
|
|
|
|
/*
|
|
* Free unit's vcc information
|
|
*/
|
|
cvp = cup->cu_vcc;
|
|
while (cvp) {
|
|
atm_free(cvp);
|
|
cvp = cvp->cv_next;
|
|
}
|
|
cup->cu_vcc = (Cmn_vcc *)NULL;
|
|
|
|
(void) splx(s);
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Free all network interfaces on a physical interface
|
|
*
|
|
* Arguments
|
|
* pip pointer to physical interface structure
|
|
*
|
|
* Returns
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
atm_physif_freenifs(pip)
|
|
struct atm_pif *pip;
|
|
{
|
|
struct atm_nif *nip = pip->pif_nif;
|
|
int s = splnet();
|
|
|
|
while ( nip )
|
|
{
|
|
/*
|
|
* atm_nif_detach zeros pointers - save so we can
|
|
* walk the chain.
|
|
*/
|
|
struct atm_nif *nipp = nip->nif_pnext;
|
|
|
|
/*
|
|
* Clean up network i/f trails
|
|
*/
|
|
atm_nif_detach ( nip );
|
|
atm_free ((caddr_t)nip);
|
|
nip = nipp;
|
|
}
|
|
pip->pif_nif = (struct atm_nif *)NULL;
|
|
|
|
(void) splx(s);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
/*
|
|
* Handle physical interface ioctl's
|
|
*
|
|
* See <netatm/atm_ioctl.h> for definitions.
|
|
*
|
|
* Called at splnet.
|
|
*
|
|
* Arguments:
|
|
* code Ioctl function (sub)code
|
|
* data Data block. On input contains command,
|
|
* on output, contains results
|
|
* arg Optional code specific arguments
|
|
*
|
|
* Returns:
|
|
* 0 Request processed successfully
|
|
* errno Request failed - reason code
|
|
*
|
|
*/
|
|
static int
|
|
atm_physif_ioctl(code, data, arg)
|
|
int code;
|
|
caddr_t data;
|
|
caddr_t arg;
|
|
{
|
|
struct atminfreq *aip = (struct atminfreq *)data;
|
|
struct atmsetreq *asr = (struct atmsetreq *)data;
|
|
struct atm_pif *pip;
|
|
struct atm_nif *nip;
|
|
struct sigmgr *smp;
|
|
struct siginst *sip;
|
|
struct ifnet *ifp;
|
|
Cmn_unit *cup;
|
|
Atm_config *acp;
|
|
caddr_t buf = aip->air_buf_addr;
|
|
struct air_phy_stat_rsp *apsp;
|
|
struct air_int_rsp apr;
|
|
struct air_netif_rsp anr;
|
|
struct air_cfg_rsp acr;
|
|
int count, len, buf_len = aip->air_buf_len;
|
|
int err = 0;
|
|
char ifname[2*IFNAMSIZ];
|
|
#if (defined(BSD) && (BSD >= 199103))
|
|
struct ifaddr *ifa;
|
|
struct in_ifaddr *ia;
|
|
struct sockaddr_dl *sdl;
|
|
#endif
|
|
|
|
|
|
switch ( aip->air_opcode ) {
|
|
|
|
case AIOCS_INF_INT:
|
|
/*
|
|
* Get physical interface information
|
|
*/
|
|
aip = (struct atminfreq *)data;
|
|
pip = (struct atm_pif *)arg;
|
|
|
|
/*
|
|
* Make sure there's room in user buffer
|
|
*/
|
|
if (aip->air_buf_len < sizeof(apr)) {
|
|
err = ENOSPC;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Fill in info to be returned
|
|
*/
|
|
KM_ZERO((caddr_t)&apr, sizeof(apr));
|
|
smp = pip->pif_sigmgr;
|
|
sip = pip->pif_siginst;
|
|
(void) sprintf(apr.anp_intf, "%s%d", pip->pif_name,
|
|
pip->pif_unit );
|
|
if ( pip->pif_nif )
|
|
{
|
|
strcpy(apr.anp_nif_pref, pip->pif_nif->nif_if.if_name);
|
|
|
|
nip = pip->pif_nif;
|
|
while ( nip ) {
|
|
apr.anp_nif_cnt++;
|
|
nip = nip->nif_pnext;
|
|
}
|
|
}
|
|
if (sip) {
|
|
ATM_ADDR_COPY(&sip->si_addr, &apr.anp_addr);
|
|
ATM_ADDR_COPY(&sip->si_subaddr, &apr.anp_subaddr);
|
|
apr.anp_sig_proto = smp->sm_proto;
|
|
apr.anp_sig_state = sip->si_state;
|
|
}
|
|
|
|
/*
|
|
* Copy data to user buffer
|
|
*/
|
|
err = copyout((caddr_t)&apr, aip->air_buf_addr, sizeof(apr));
|
|
if (err)
|
|
break;
|
|
|
|
/*
|
|
* Update buffer pointer/count
|
|
*/
|
|
aip->air_buf_addr += sizeof(apr);
|
|
aip->air_buf_len -= sizeof(apr);
|
|
break;
|
|
|
|
case AIOCS_INF_NIF:
|
|
/*
|
|
* Get network interface information
|
|
*/
|
|
aip = (struct atminfreq *)data;
|
|
nip = (struct atm_nif *)arg;
|
|
ifp = &nip->nif_if;
|
|
pip = nip->nif_pif;
|
|
|
|
/*
|
|
* Make sure there's room in user buffer
|
|
*/
|
|
if (aip->air_buf_len < sizeof(anr)) {
|
|
err = ENOSPC;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Fill in info to be returned
|
|
*/
|
|
KM_ZERO((caddr_t)&anr, sizeof(anr));
|
|
(void) sprintf(anr.anp_intf, "%s%d", ifp->if_name,
|
|
ifp->if_unit);
|
|
IFP_TO_IA(ifp, ia);
|
|
if (ia) {
|
|
anr.anp_proto_addr = *ia->ia_ifa.ifa_addr;
|
|
}
|
|
(void) sprintf(anr.anp_phy_intf, "%s%d", pip->pif_name,
|
|
pip->pif_unit);
|
|
|
|
/*
|
|
* Copy data to user buffer
|
|
*/
|
|
err = copyout((caddr_t)&anr, aip->air_buf_addr, sizeof(anr));
|
|
if (err)
|
|
break;
|
|
|
|
/*
|
|
* Update buffer pointer/count
|
|
*/
|
|
aip->air_buf_addr += sizeof(anr);
|
|
aip->air_buf_len -= sizeof(anr);
|
|
break;
|
|
|
|
case AIOCS_INF_PIS:
|
|
/*
|
|
* Get per interface statistics
|
|
*/
|
|
pip = (struct atm_pif *)arg;
|
|
if ( pip == NULL )
|
|
return ( ENXIO );
|
|
sprintf ( ifname, "%s%d", pip->pif_name, pip->pif_unit );
|
|
|
|
/*
|
|
* Cast response into users buffer
|
|
*/
|
|
apsp = (struct air_phy_stat_rsp *)buf;
|
|
|
|
/*
|
|
* Sanity check
|
|
*/
|
|
len = sizeof ( struct air_phy_stat_rsp );
|
|
if ( buf_len < len )
|
|
return ( ENOSPC );
|
|
|
|
/*
|
|
* Copy interface name into response
|
|
*/
|
|
if ( err = copyout ( ifname, apsp->app_intf, IFNAMSIZ ) )
|
|
break;
|
|
|
|
/*
|
|
* Copy counters
|
|
*/
|
|
if ( err = copyout ( &pip->pif_ipdus, &apsp->app_ipdus,
|
|
len - sizeof ( apsp->app_intf ) ) )
|
|
break;
|
|
|
|
/*
|
|
* Adjust buffer elements
|
|
*/
|
|
buf += len;
|
|
buf_len -= len;
|
|
|
|
aip->air_buf_addr = buf;
|
|
aip->air_buf_len = buf_len;
|
|
break;
|
|
|
|
case AIOCS_SET_NIF:
|
|
/*
|
|
* Set NIF - allow user to configure 1 or more logical
|
|
* interfaces per physical interface.
|
|
*/
|
|
|
|
/*
|
|
* Get pointer to physical interface structure from
|
|
* ioctl argument.
|
|
*/
|
|
pip = (struct atm_pif *)arg;
|
|
cup = (Cmn_unit *)pip;
|
|
|
|
/*
|
|
* Sanity check - are we already connected to something?
|
|
*/
|
|
if ( pip->pif_sigmgr )
|
|
{
|
|
err = EBUSY;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Free any previously allocated NIFs
|
|
*/
|
|
atm_physif_freenifs(pip);
|
|
|
|
/*
|
|
* Add list of interfaces
|
|
*/
|
|
for ( count = 0; count < asr->asr_nif_cnt; count++ )
|
|
{
|
|
nip = (struct atm_nif *)atm_allocate(cup->cu_nif_pool);
|
|
if ( nip == NULL )
|
|
{
|
|
/*
|
|
* Destroy any successful nifs
|
|
*/
|
|
atm_physif_freenifs(pip);
|
|
err = ENOMEM;
|
|
break;
|
|
}
|
|
|
|
nip->nif_pif = pip;
|
|
ifp = &nip->nif_if;
|
|
|
|
strcpy ( nip->nif_name, asr->asr_nif_pref );
|
|
nip->nif_sel = count;
|
|
|
|
ifp->if_name = nip->nif_name;
|
|
ifp->if_unit = count;
|
|
ifp->if_mtu = ATM_NIF_MTU;
|
|
ifp->if_flags = IFF_UP | IFF_BROADCAST | IFF_RUNNING;
|
|
ifp->if_output = atm_ifoutput;
|
|
ifp->if_ioctl = atm_if_ioctl;
|
|
ifp->if_snd.ifq_maxlen = ifqmaxlen;
|
|
#if (defined(BSD) && (BSD >= 199103))
|
|
/*
|
|
* Set if_type and if_baudrate
|
|
*/
|
|
ifp->if_type = IFT_ATM;
|
|
switch ( cup->cu_config.ac_media ) {
|
|
case MEDIA_TAXI_100:
|
|
ifp->if_baudrate = 100000000;
|
|
break;
|
|
case MEDIA_TAXI_140:
|
|
ifp->if_baudrate = 140000000;
|
|
break;
|
|
case MEDIA_OC3C:
|
|
case MEDIA_OC12C:
|
|
case MEDIA_UTP155:
|
|
ifp->if_baudrate = 155000000;
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
if ( err = atm_nif_attach ( nip ) )
|
|
{
|
|
atm_free ( (caddr_t)nip );
|
|
|
|
/*
|
|
* Destroy any successful nifs
|
|
*/
|
|
atm_physif_freenifs(pip);
|
|
break;
|
|
}
|
|
#if (defined(BSD) && (BSD >= 199103))
|
|
/*
|
|
* Set macaddr in <Link> address
|
|
*/
|
|
ifp->if_addrlen = 6;
|
|
ifa = ifnet_addrs[ifp->if_index - 1];
|
|
if ( ifa ) {
|
|
sdl = (struct sockaddr_dl *)
|
|
ifa->ifa_addr;
|
|
sdl->sdl_type = IFT_ETHER;
|
|
sdl->sdl_alen = ifp->if_addrlen;
|
|
bcopy ( (caddr_t)&cup->cu_config.ac_macaddr,
|
|
LLADDR(sdl), ifp->if_addrlen );
|
|
}
|
|
#endif
|
|
}
|
|
break;
|
|
|
|
case AIOCS_INF_CFG:
|
|
/*
|
|
* Get adapter configuration information
|
|
*/
|
|
aip = (struct atminfreq *)data;
|
|
pip = (struct atm_pif *)arg;
|
|
cup = (Cmn_unit *)pip;
|
|
acp = &cup->cu_config;
|
|
|
|
/*
|
|
* Make sure there's room in user buffer
|
|
*/
|
|
if (aip->air_buf_len < sizeof(acr)) {
|
|
err = ENOSPC;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Fill in info to be returned
|
|
*/
|
|
KM_ZERO((caddr_t)&acr, sizeof(acr));
|
|
(void) sprintf(acr.acp_intf, "%s%d", pip->pif_name,
|
|
pip->pif_unit);
|
|
KM_COPY((caddr_t)acp, (caddr_t)&acr.acp_cfg,
|
|
sizeof(Atm_config));
|
|
|
|
/*
|
|
* Copy data to user buffer
|
|
*/
|
|
err = copyout((caddr_t)&acr, aip->air_buf_addr,
|
|
sizeof(acr));
|
|
if (err)
|
|
break;
|
|
|
|
/*
|
|
* Update buffer pointer/count
|
|
*/
|
|
aip->air_buf_addr += sizeof(acr);
|
|
aip->air_buf_len -= sizeof(acr);
|
|
break;
|
|
|
|
case AIOCS_INF_VST:
|
|
/*
|
|
* Pass off to device-specific handler
|
|
*/
|
|
cup = (Cmn_unit *)arg;
|
|
if (cup == NULL)
|
|
err = ENXIO;
|
|
else
|
|
err = (*cup->cu_ioctl)(code, data, arg);
|
|
break;
|
|
|
|
default:
|
|
err = ENOSYS;
|
|
}
|
|
|
|
return ( err );
|
|
}
|
|
|
|
|
|
/*
|
|
* Register a Network Convergence Module
|
|
*
|
|
* Each ATM network convergence module must register itself here before
|
|
* it will receive network interface status notifications.
|
|
*
|
|
* Arguments:
|
|
* ncp pointer to network convergence definition structure
|
|
*
|
|
* Returns:
|
|
* 0 registration successful
|
|
* errno registration failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
atm_netconv_register(ncp)
|
|
struct atm_ncm *ncp;
|
|
{
|
|
struct atm_ncm *tdp;
|
|
int s = splnet();
|
|
|
|
/*
|
|
* See if we need to be initialized
|
|
*/
|
|
if (!atm_init)
|
|
atm_initialize();
|
|
|
|
/*
|
|
* Validate protocol family
|
|
*/
|
|
if (ncp->ncm_family > AF_MAX) {
|
|
(void) splx(s);
|
|
return (EINVAL);
|
|
}
|
|
|
|
/*
|
|
* Ensure no duplicates
|
|
*/
|
|
for (tdp = atm_netconv_head; tdp != NULL; tdp = tdp->ncm_next) {
|
|
if (tdp->ncm_family == ncp->ncm_family) {
|
|
(void) splx(s);
|
|
return (EEXIST);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Add module to list
|
|
*/
|
|
LINK2TAIL(ncp, struct atm_ncm, atm_netconv_head, ncm_next);
|
|
|
|
/*
|
|
* Add new interface output function
|
|
*/
|
|
atm_ifouttbl[ncp->ncm_family] = ncp->ncm_ifoutput;
|
|
|
|
(void) splx(s);
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* De-register an ATM Network Convergence Module
|
|
*
|
|
* Each ATM network convergence provider must de-register its registered
|
|
* service(s) before terminating. Specifically, loaded kernel modules
|
|
* must de-register their services before unloading themselves.
|
|
*
|
|
* Arguments:
|
|
* ncp pointer to network convergence definition structure
|
|
*
|
|
* Returns:
|
|
* 0 de-registration successful
|
|
* errno de-registration failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
atm_netconv_deregister(ncp)
|
|
struct atm_ncm *ncp;
|
|
{
|
|
int found, s = splnet();
|
|
|
|
/*
|
|
* Remove module from list
|
|
*/
|
|
UNLINKF(ncp, struct atm_ncm, atm_netconv_head, ncm_next, found);
|
|
|
|
if (!found) {
|
|
(void) splx(s);
|
|
return (ENOENT);
|
|
}
|
|
|
|
/*
|
|
* Remove module's interface output function
|
|
*/
|
|
atm_ifouttbl[ncp->ncm_family] = NULL;
|
|
|
|
(void) splx(s);
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Attach an ATM Network Interface
|
|
*
|
|
* Before an ATM network interface can be used by the system, the owning
|
|
* device interface must attach the network interface using this function.
|
|
* The physical interface for this network interface must have been previously
|
|
* registered (using atm_interface_register). The network interface will be
|
|
* added to the kernel's interface list and to the physical interface's list.
|
|
* The caller is responsible for initializing the control block fields.
|
|
*
|
|
* Arguments:
|
|
* nip pointer to atm network interface control block
|
|
*
|
|
* Returns:
|
|
* 0 attach successful
|
|
* errno attach failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
atm_nif_attach(nip)
|
|
struct atm_nif *nip;
|
|
{
|
|
struct atm_pif *pip, *pip2;
|
|
struct ifnet *ifp;
|
|
struct atm_ncm *ncp;
|
|
int s;
|
|
|
|
ifp = &nip->nif_if;
|
|
pip = nip->nif_pif;
|
|
|
|
s = splimp();
|
|
|
|
/*
|
|
* Verify physical interface is registered
|
|
*/
|
|
for (pip2 = atm_interface_head; pip2 != NULL; pip2 = pip2->pif_next) {
|
|
if (pip == pip2)
|
|
break;
|
|
}
|
|
if ((pip == NULL) || (pip2 == NULL)) {
|
|
(void) splx(s);
|
|
return (EFAULT);
|
|
}
|
|
|
|
/*
|
|
* Add to system interface list
|
|
*/
|
|
if_attach(ifp);
|
|
|
|
/*
|
|
* Add to physical interface list
|
|
*/
|
|
LINK2TAIL(nip, struct atm_nif, pip->pif_nif, nif_pnext);
|
|
|
|
/*
|
|
* Notify network convergence modules of new network i/f
|
|
*/
|
|
for (ncp = atm_netconv_head; ncp; ncp = ncp->ncm_next) {
|
|
int err;
|
|
|
|
err = (*ncp->ncm_stat)(NCM_ATTACH, nip, 0);
|
|
if (err) {
|
|
atm_nif_detach(nip);
|
|
(void) splx(s);
|
|
return (err);
|
|
}
|
|
}
|
|
|
|
(void) splx(s);
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Detach an ATM Network Interface
|
|
*
|
|
* Before an ATM network interface control block can be freed, all kernel
|
|
* references to/from this block must be released. This function will delete
|
|
* all routing references to the interface and free all interface addresses
|
|
* for the interface. The network interface will then be removed from the
|
|
* kernel's interface list and from the owning physical interface's list.
|
|
* The caller is responsible for free'ing the control block.
|
|
*
|
|
* Arguments:
|
|
* nip pointer to atm network interface control block
|
|
*
|
|
* Returns:
|
|
* none
|
|
*
|
|
*/
|
|
void
|
|
atm_nif_detach(nip)
|
|
struct atm_nif *nip;
|
|
{
|
|
struct atm_ncm *ncp;
|
|
int s, i;
|
|
struct ifnet *ifp = &nip->nif_if;
|
|
struct ifaddr *ifa;
|
|
struct in_ifaddr *ia;
|
|
struct radix_node_head *rnh;
|
|
|
|
|
|
s = splimp();
|
|
|
|
/*
|
|
* Notify convergence modules of network i/f demise
|
|
*/
|
|
for (ncp = atm_netconv_head; ncp; ncp = ncp->ncm_next) {
|
|
(void) (*ncp->ncm_stat)(NCM_DETACH, nip, 0);
|
|
}
|
|
|
|
/*
|
|
* Mark interface down
|
|
*/
|
|
if_down(ifp);
|
|
|
|
/*
|
|
* Free all interface routes and addresses
|
|
*/
|
|
while (1) {
|
|
IFP_TO_IA(ifp, ia);
|
|
if (ia == NULL)
|
|
break;
|
|
|
|
/* Delete interface route */
|
|
in_ifscrub(ifp, ia);
|
|
|
|
/* Remove interface address from queues */
|
|
ifa = &ia->ia_ifa;
|
|
TAILQ_REMOVE(&ifp->if_addrhead, ifa, ifa_link);
|
|
TAILQ_REMOVE(&in_ifaddrhead, ia, ia_link);
|
|
|
|
/* Free interface address */
|
|
IFAFREE(ifa);
|
|
}
|
|
|
|
/*
|
|
* Delete all remaining routes using this interface
|
|
* Unfortuneatly the only way to do this is to slog through
|
|
* the entire routing table looking for routes which point
|
|
* to this interface...oh well...
|
|
*/
|
|
for (i = 1; i <= AF_MAX; i++) {
|
|
if ((rnh = rt_tables[i]) == NULL)
|
|
continue;
|
|
(void) rnh->rnh_walktree(rnh, atm_netif_rtdel, ifp);
|
|
}
|
|
|
|
/*
|
|
* Remove from system interface list (ie. if_detach())
|
|
*/
|
|
TAILQ_REMOVE(&ifnet, ifp, if_link);
|
|
|
|
/*
|
|
* Remove from physical interface list
|
|
*/
|
|
UNLINK(nip, struct atm_nif, nip->nif_pif->pif_nif, nif_pnext);
|
|
|
|
(void) splx(s);
|
|
}
|
|
|
|
|
|
/*
|
|
* Delete Routes for a Network Interface
|
|
*
|
|
* Called for each routing entry via the rnh->rnh_walktree() call above
|
|
* to delete all route entries referencing a detaching network interface.
|
|
*
|
|
* Arguments:
|
|
* rn pointer to node in the routing table
|
|
* arg argument passed to rnh->rnh_walktree() - detaching interface
|
|
*
|
|
* Returns:
|
|
* 0 successful
|
|
* errno failed - reason indicated
|
|
*
|
|
*/
|
|
static int
|
|
atm_netif_rtdel(rn, arg)
|
|
struct radix_node *rn;
|
|
void *arg;
|
|
{
|
|
struct rtentry *rt = (struct rtentry *)rn;
|
|
struct ifnet *ifp = arg;
|
|
int err;
|
|
|
|
if (rt->rt_ifp == ifp) {
|
|
|
|
/*
|
|
* Protect (sorta) against walktree recursion problems
|
|
* with cloned routes
|
|
*/
|
|
if ((rt->rt_flags & RTF_UP) == 0)
|
|
return (0);
|
|
|
|
err = rtrequest(RTM_DELETE, rt_key(rt), rt->rt_gateway,
|
|
rt_mask(rt), rt->rt_flags,
|
|
(struct rtentry **) NULL);
|
|
if (err) {
|
|
log(LOG_WARNING, "atm_netif_rtdel: error %d\n", err);
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Set an ATM Network Interface address
|
|
*
|
|
* This is called from a device interface when processing an SIOCSIFADDR
|
|
* ioctl request. We just notify all convergence modules of the new address
|
|
* and hope everyone has non-overlapping interests, since if someone reports
|
|
* an error we don't go back and tell everyone to undo the change.
|
|
*
|
|
* Arguments:
|
|
* nip pointer to atm network interface control block
|
|
* ifa pointer to new interface address
|
|
*
|
|
* Returns:
|
|
* 0 set successful
|
|
* errno set failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
atm_nif_setaddr(nip, ifa)
|
|
struct atm_nif *nip;
|
|
struct ifaddr *ifa;
|
|
{
|
|
struct atm_ncm *ncp;
|
|
int err = 0, s = splnet();
|
|
|
|
/*
|
|
* Notify convergence modules of network i/f change
|
|
*/
|
|
for (ncp = atm_netconv_head; ncp; ncp = ncp->ncm_next) {
|
|
err = (*ncp->ncm_stat)(NCM_SETADDR, nip, (int)ifa);
|
|
if (err)
|
|
break;
|
|
}
|
|
(void) splx(s);
|
|
|
|
return (err);
|
|
}
|
|
|
|
|
|
/*
|
|
* ATM Interface Packet Output
|
|
*
|
|
* All ATM network interfaces must have their ifnet if_output address set to
|
|
* this function. Since no existing network layer code is to be modified
|
|
* for ATM support, this function serves as the hook to allow network output
|
|
* packets to be assigned to their proper outbound VCC. Each network address
|
|
* family which is to be supported over ATM must be assigned an output
|
|
* packet processing function via atm_netconv_register().
|
|
*
|
|
* Arguments:
|
|
* ifp pointer to ifnet structure
|
|
* m pointer to packet buffer chain to be output
|
|
* dst pointer to packet's network destination address
|
|
*
|
|
* Returns:
|
|
* 0 packet queued to interface
|
|
* errno output failed - reason indicated
|
|
*
|
|
*/
|
|
int
|
|
#if (defined(BSD) && (BSD >= 199103))
|
|
atm_ifoutput(ifp, m, dst, rt)
|
|
#else
|
|
atm_ifoutput(ifp, m, dst)
|
|
#endif
|
|
struct ifnet *ifp;
|
|
KBuffer *m;
|
|
struct sockaddr *dst;
|
|
#if (defined(BSD) && (BSD >= 199103))
|
|
struct rtentry *rt;
|
|
#endif
|
|
{
|
|
u_short fam = dst->sa_family;
|
|
int (*func)__P((struct ifnet *, KBuffer *,
|
|
struct sockaddr *));
|
|
|
|
/*
|
|
* Validate address family
|
|
*/
|
|
if (fam > AF_MAX) {
|
|
KB_FREEALL(m);
|
|
return (EAFNOSUPPORT);
|
|
}
|
|
|
|
/*
|
|
* Hand packet off for dst-to-VCC mapping
|
|
*/
|
|
func = atm_ifouttbl[fam];
|
|
if (func == NULL) {
|
|
KB_FREEALL(m);
|
|
return (EAFNOSUPPORT);
|
|
}
|
|
return ((*func)(ifp, m, dst));
|
|
}
|
|
|
|
|
|
/*
|
|
* Handle interface ioctl requests.
|
|
*
|
|
* Arguments:
|
|
* ifp pointer to network interface structure
|
|
* cmd IOCTL cmd
|
|
* data arguments to/from ioctl
|
|
*
|
|
* Returns:
|
|
* error errno value
|
|
*/
|
|
static int
|
|
atm_if_ioctl(ifp, cmd, data)
|
|
struct ifnet *ifp;
|
|
u_long cmd;
|
|
caddr_t data;
|
|
{
|
|
register struct ifreq *ifr = (struct ifreq *)data;
|
|
struct atm_nif *nip = (struct atm_nif *)ifp;
|
|
int error = 0;
|
|
int s = splnet();
|
|
|
|
switch ( cmd )
|
|
{
|
|
case SIOCGIFADDR:
|
|
KM_COPY ( (caddr_t)&(nip->nif_pif->pif_macaddr),
|
|
(caddr_t)ifr->ifr_addr.sa_data,
|
|
sizeof(struct mac_addr) );
|
|
break;
|
|
|
|
case SIOCSIFADDR:
|
|
error = atm_nif_setaddr ( nip, (struct ifaddr *)data);
|
|
ifp->if_flags |= IFF_UP | IFF_RUNNING | IFF_BROADCAST;
|
|
break;
|
|
|
|
case SIOCGIFFLAGS:
|
|
*(short *)data = ifp->if_flags;
|
|
break;
|
|
|
|
case SIOCSIFFLAGS:
|
|
break;
|
|
|
|
default:
|
|
error = EINVAL;
|
|
break;
|
|
}
|
|
|
|
(void) splx(s);
|
|
return ( error );
|
|
}
|
|
|
|
|
|
/*
|
|
* Parse interface name
|
|
*
|
|
* Parses an interface name string into a name and a unit component.
|
|
*
|
|
* Arguments:
|
|
* name pointer to interface name string
|
|
* namep address to store interface name
|
|
* size size available at namep
|
|
* unitp address to store interface unit number
|
|
*
|
|
* Returns:
|
|
* 0 name parsed
|
|
* else parse error
|
|
*
|
|
*/
|
|
static int
|
|
atm_ifparse(name, namep, size, unitp)
|
|
char *name;
|
|
char *namep;
|
|
int size;
|
|
int *unitp;
|
|
{
|
|
char *cp, *np;
|
|
int len = 0, unit = 0;
|
|
|
|
/*
|
|
* Separate supplied string into name and unit parts.
|
|
*/
|
|
cp = name;
|
|
np = namep;
|
|
while (*cp) {
|
|
if (*cp >= '0' && *cp <= '9')
|
|
break;
|
|
if (++len >= size)
|
|
return (-1);
|
|
*np++ = *cp++;
|
|
}
|
|
*np = '\0';
|
|
while (*cp && *cp >= '0' && *cp <= '9')
|
|
unit = 10 * unit + *cp++ - '0';
|
|
|
|
*unitp = unit;
|
|
|
|
return (0);
|
|
}
|
|
|
|
|
|
/*
|
|
* Locate ATM physical interface via name
|
|
*
|
|
* Uses the supplied interface name string to locate a registered
|
|
* ATM physical interface.
|
|
*
|
|
* Arguments:
|
|
* name pointer to interface name string
|
|
*
|
|
* Returns:
|
|
* 0 interface not found
|
|
* else pointer to atm physical interface structure
|
|
*
|
|
*/
|
|
struct atm_pif *
|
|
atm_pifname(name)
|
|
char *name;
|
|
{
|
|
struct atm_pif *pip;
|
|
char n[IFNAMSIZ];
|
|
int unit;
|
|
|
|
/*
|
|
* Break down name
|
|
*/
|
|
if (atm_ifparse(name, n, sizeof(n), &unit))
|
|
return ((struct atm_pif *)0);
|
|
|
|
/*
|
|
* Look for the physical interface
|
|
*/
|
|
for (pip = atm_interface_head; pip; pip = pip->pif_next) {
|
|
if ((pip->pif_unit == unit) && (strcmp(pip->pif_name, n) == 0))
|
|
break;
|
|
}
|
|
|
|
return (pip);
|
|
}
|
|
|
|
|
|
/*
|
|
* Locate ATM network interface via name
|
|
*
|
|
* Uses the supplied interface name string to locate an ATM network interface.
|
|
*
|
|
* Arguments:
|
|
* name pointer to interface name string
|
|
*
|
|
* Returns:
|
|
* 0 interface not found
|
|
* else pointer to atm network interface structure
|
|
*
|
|
*/
|
|
struct atm_nif *
|
|
atm_nifname(name)
|
|
char *name;
|
|
{
|
|
struct atm_pif *pip;
|
|
struct atm_nif *nip;
|
|
char n[IFNAMSIZ];
|
|
int unit;
|
|
|
|
/*
|
|
* Break down name
|
|
*/
|
|
if (atm_ifparse(name, n, sizeof(n), &unit))
|
|
return ((struct atm_nif *)0);
|
|
|
|
/*
|
|
* Search thru each physical interface
|
|
*/
|
|
for (pip = atm_interface_head; pip; pip = pip->pif_next) {
|
|
/*
|
|
* Looking for network interface
|
|
*/
|
|
for (nip = pip->pif_nif; nip; nip = nip->nif_pnext) {
|
|
struct ifnet *ifp = (struct ifnet *)nip;
|
|
if ((ifp->if_unit == unit) &&
|
|
(strcmp(ifp->if_name, n) == 0))
|
|
return (nip);
|
|
}
|
|
}
|
|
return (NULL);
|
|
}
|
|
|