static int hdlc_close(struct net_device *dev)
{
hdlc_device *hdlc = dev_to_hdlc(dev);
hdlc->close(hdlc);
if (mode_is(hdlc, MODE_FR | MODE_SOFT) ||
mode_is(hdlc, MODE_CISCO | MODE_SOFT))
fr_cisco_close(hdlc);
#ifdef CONFIG_HDLC_PPP
else if (mode_is(hdlc, MODE_PPP | MODE_SOFT)) {
sppp_close(dev);
sppp_detach(dev);
dev->rebuild_header = NULL;
dev->change_mtu = hdlc_change_mtu;
dev->mtu = HDLC_MAX_MTU;
dev->hard_header_len = 16;
}
#endif
#ifdef CONFIG_HDLC_X25
else if (mode_is(hdlc, MODE_X25))
lapb_unregister(hdlc);
#endif
return 0;
}
static void fr_timer(unsigned long arg)
{
hdlc_device *hdlc=(hdlc_device*)arg;
int i, cnt=0, reliable;
u32 list;
if (mode_is(hdlc, MODE_DCE))
reliable = (jiffies - hdlc->lmi.last_poll < hdlc->lmi.T392*HZ);
else {
hdlc->lmi.last_errors <<= 1; /* Shift the list */
if (hdlc->lmi.state & LINK_STATE_REQUEST) {
printk(KERN_INFO "%s: No LMI status reply received\n",
hdlc->name);
hdlc->lmi.last_errors |= 1;
}
for (i=0, list=hdlc->lmi.last_errors; i<hdlc->lmi.N393;
i++, list>>=1)
cnt += (list & 1); /* errors count */
reliable = (cnt < hdlc->lmi.N392);
}
if ((hdlc->lmi.state & LINK_STATE_RELIABLE) !=
(reliable ? LINK_STATE_RELIABLE : 0)) {
pvc_device *pvc=hdlc->first_pvc;
while (pvc) {/* Deactivate all PVCs */
pvc->state &= ~(PVC_STATE_NEW | PVC_STATE_ACTIVE);
pvc=pvc->next;
}
hdlc->lmi.state ^= LINK_STATE_RELIABLE;
printk(KERN_INFO "%s: Link %sreliable\n", hdlc->name,
reliable ? "" : "un");
if (reliable) {
hdlc->lmi.N391cnt=0; /* Request full status */
hdlc->lmi.state |= LINK_STATE_CHANGED;
}
}
if (mode_is(hdlc, MODE_DCE))
hdlc->timer.expires = jiffies + hdlc->lmi.T392*HZ;
else {
if (hdlc->lmi.N391cnt)
hdlc->lmi.N391cnt--;
fr_lmi_send(hdlc, hdlc->lmi.N391cnt == 0);
hdlc->lmi.state |= LINK_STATE_REQUEST;
hdlc->timer.expires = jiffies + hdlc->lmi.T391*HZ;
}
hdlc->timer.function = fr_timer;
hdlc->timer.data = arg;
add_timer(&hdlc->timer);
}
static void fr_cisco_open(hdlc_device *hdlc)
{
hdlc->lmi.state = LINK_STATE_CHANGED;
hdlc->lmi.txseq = hdlc->lmi.rxseq = 0;
hdlc->lmi.last_errors = 0xFFFFFFFF;
hdlc->lmi.N391cnt = 0;
if (mode_is(hdlc, MODE_CISCO))
hdlc_to_dev(hdlc)->hard_header=cisco_hard_header;
else
hdlc_to_dev(hdlc)->hard_header=fr_hard_header;
init_timer(&hdlc->timer);
hdlc->timer.expires = jiffies + HZ; /* First poll after 1 second */
hdlc->timer.function = mode_is(hdlc, MODE_FR) ? fr_timer : cisco_timer;
hdlc->timer.data = (unsigned long)hdlc;
add_timer(&hdlc->timer);
}
static int hdlc_xmit(struct sk_buff *skb, struct net_device *dev)
{
hdlc_device *hdlc = dev_to_hdlc(dev);
#ifdef CONFIG_HDLC_X25
if (mode_is(hdlc, MODE_X25 | MODE_SOFT)) {
int result;
/* X.25 to LAPB */
switch (skb->data[0]) {
case 0: /* Data to be transmitted */
skb_pull(skb, 1);
if ((result = lapb_data_request(hdlc, skb)) != LAPB_OK)
dev_kfree_skb(skb);
return 0;
case 1:
if ((result = lapb_connect_request(hdlc))!= LAPB_OK) {
if (result == LAPB_CONNECTED) {
/* Send connect confirm. msg to level 3 */
x25_connected(hdlc, 0);
} else {
printk(KERN_ERR "%s: LAPB connect "
"request failed, error code = "
"%i\n", hdlc_to_name(hdlc),
result);
}
}
break;
case 2:
if ((result=lapb_disconnect_request(hdlc))!=LAPB_OK) {
if (result == LAPB_NOTCONNECTED) {
/* Send disconnect confirm. msg to level 3 */
x25_disconnected(hdlc, 0);
} else {
printk(KERN_ERR "%s: LAPB disconnect "
"request failed, error code = "
"%i\n", hdlc_to_name(hdlc),
result);
}
}
break;
default:
/* to be defined */
break;
}
dev_kfree_skb(skb);
return 0;
} /* MODE_X25 */
#endif /* CONFIG_HDLC_X25 */
return hdlc->xmit(hdlc, skb);
}
static int pvc_close(struct device *dev)
{
pvc_device *pvc=dev_to_pvc(dev);
pvc->state=0;
if (!mode_is(pvc->master, MODE_SOFT) && pvc->master->close_pvc)
pvc->master->close_pvc(pvc);
pvc->master->lmi.state |= LINK_STATE_CHANGED;
return 0;
}
static int hdlc_close(struct device *dev)
{
hdlc_device *hdlc=dev_to_hdlc(dev);
hdlc->close(hdlc);
if (mode_is(hdlc, MODE_FR | MODE_SOFT) ||
mode_is(hdlc, MODE_CISCO | MODE_SOFT))
fr_cisco_close(hdlc);
else if (mode_is(hdlc, MODE_PPP | MODE_SOFT)) {
sppp_close(dev);
sppp_detach(dev);
dev->rebuild_header=NULL;
dev->change_mtu=hdlc_change_mtu;
dev->mtu=HDLC_MAX_MTU;
dev->hard_header_len=16;
}
return 0;
}
static int pvc_open(struct device *dev)
{
pvc_device *pvc=dev_to_pvc(dev);
int result=0;
if ((hdlc_to_dev(pvc->master)->flags & IFF_UP) == 0)
return -EIO; /* Master must be UP in order to activate PVC */
memset(&(pvc->stats), 0, sizeof(struct net_device_stats));
pvc->state=0;
if (!mode_is(pvc->master, MODE_SOFT) && pvc->master->open_pvc)
result=pvc->master->open_pvc(pvc);
if (result)
return result;
pvc->master->lmi.state |= LINK_STATE_CHANGED;
return 0;
}
void hdlc_netif_rx(hdlc_device *hdlc, struct sk_buff *skb, int dlci)
{
skb->mac.raw=skb->data;
if (mode_is(hdlc, MODE_SOFT)) {
if (mode_is(hdlc, MODE_FR)) {
fr_netif(hdlc, skb);
return;
} else if (mode_is(hdlc, MODE_CISCO)) {
cisco_netif(hdlc, skb);
return;
} else if (mode_is(hdlc, MODE_PPP)) {
hdlc->stats.rx_bytes+=skb->len;
hdlc->stats.rx_packets++;
skb->protocol=htons(ETH_P_WAN_PPP);
skb->dev=hdlc_to_dev(hdlc);
netif_rx(skb);
return;
}
} else { /* protocol support in hardware/firmware */
hdlc->stats.rx_bytes+=skb->len;
hdlc->stats.rx_packets++;
if (mode_is(hdlc, MODE_HDLC))
skb->protocol=htons(ETH_P_IP);
/* otherwise protocol set by hw driver */
if (mode_is(hdlc, MODE_FR)) {
pvc_device *pvc=find_pvc(hdlc, dlci);
if (!pvc) { /* packet from nonexistent PVC */
hdlc->stats.rx_errors++;
dev_kfree_skb(skb);
}
pvc->stats.rx_bytes+=skb->len;
pvc->stats.rx_packets++;
skb->dev=&pvc->netdev;
} else
skb->dev=hdlc_to_dev(hdlc);
netif_rx(skb);
return;
}
hdlc->stats.rx_errors++; /* unsupported mode */
dev_kfree_skb(skb);
}
static int hdlc_open(struct device *dev)
{
hdlc_device *hdlc=dev_to_hdlc(dev);
int result;
if (hdlc->mode==MODE_NONE)
return -ENOSYS;
memset(&(hdlc->stats), 0, sizeof(struct net_device_stats));
if (mode_is(hdlc, MODE_FR | MODE_SOFT) ||
mode_is(hdlc, MODE_CISCO | MODE_SOFT))
fr_cisco_open(hdlc);
else if (mode_is(hdlc, MODE_PPP | MODE_SOFT)) {
sppp_attach(&hdlc->pppdev);
/* sppp_attach nukes them. We don't need syncppp's ioctl */
/* Anyway, I'm going to replace it with ppp_synctty.c */
dev->do_ioctl = hdlc_ioctl;
hdlc->pppdev.sppp.pp_flags&=~PP_CISCO;
dev->type=ARPHRD_PPP;
result = sppp_open(dev);
if (result) {
sppp_detach(dev);
return result;
}
}
result=hdlc->open(hdlc);
if (result) {
if (mode_is(hdlc, MODE_FR | MODE_SOFT) ||
mode_is(hdlc, MODE_CISCO | MODE_SOFT))
fr_cisco_close(hdlc);
else if (mode_is(hdlc, MODE_PPP | MODE_SOFT)) {
sppp_close(dev);
sppp_detach(dev);
dev->rebuild_header=NULL;
dev->change_mtu=hdlc_change_mtu;
dev->mtu=HDLC_MAX_MTU;
dev->hard_header_len=16;
}
}
return result;
}
static int fr_lmi_recv(hdlc_device *hdlc, struct sk_buff *skb)
{
int stat_len;
pvc_device *pvc;
int reptype=-1, error;
u8 rxseq, txseq;
int i;
if (skb->len < (mode_is(hdlc, MODE_FR_ANSI) ?
LMI_ANSI_LENGTH : LMI_LENGTH)) {
printk(KERN_INFO "%s: Short LMI frame\n", hdlc->name);
return 1;
}
if (skb->data[5] != (!mode_is(hdlc, MODE_DCE) ?
LMI_STATUS : LMI_STATUS_ENQUIRY)) {
printk(KERN_INFO "%s: LMI msgtype=%x, Not LMI status %s\n",
hdlc->name, skb->data[2],
mode_is(hdlc, MODE_DCE) ? "enquiry" : "reply");
return 1;
}
i = mode_is(hdlc, MODE_FR_ANSI) ? 7 : 6;
if (skb->data[i] !=
(mode_is(hdlc, MODE_FR_CCITT) ? LMI_CCITT_REPTYPE : LMI_REPTYPE)) {
printk(KERN_INFO "%s: Not a report type=%x\n", hdlc->name,
skb->data[i]);
return 1;
}
i++;
i++; /* Skip length field */
reptype=skb->data[i++];
if (skb->data[i]!=
(mode_is(hdlc, MODE_FR_CCITT) ? LMI_CCITT_ALIVE : LMI_ALIVE)) {
printk(KERN_INFO "%s: Unsupported status element=%x\n",
hdlc->name, skb->data[i]);
return 1;
}
i++;
i++; /* Skip length field */
hdlc->lmi.rxseq = skb->data[i++]; /* TX sequence from peer */
rxseq = skb->data[i++]; /* Should confirm our sequence */
txseq = hdlc->lmi.txseq;
if (mode_is(hdlc, MODE_DCE)) {
if (reptype != LMI_FULLREP && reptype != LMI_INTEGRITY) {
printk(KERN_INFO "%s: Unsupported report type=%x\n",
hdlc->name, reptype);
return 1;
}
}
error=0;
if (!(hdlc->lmi.state & LINK_STATE_RELIABLE))
error=1;
if (rxseq == 0 || rxseq != txseq) {
hdlc->lmi.N391cnt=0; /* Ask for full report next time */
error=1;
}
if (mode_is(hdlc, MODE_DCE)) {
if ((hdlc->lmi.state & LINK_STATE_FULLREP_SENT) && !error) {
/* Stop sending full report - the last one has been confirmed by DTE */
hdlc->lmi.state &= ~LINK_STATE_FULLREP_SENT;
pvc=hdlc->first_pvc;
while (pvc) {
if (pvc->state & PVC_STATE_NEW) {
pvc->state &= ~PVC_STATE_NEW;
pvc->state |= PVC_STATE_ACTIVE;
fr_log_dlci_active(pvc);
/* Tell DTE that new PVC is now active */
hdlc->lmi.state |= LINK_STATE_CHANGED;
}
pvc=pvc->next;
}
}
if (hdlc->lmi.state & LINK_STATE_CHANGED) {
reptype = LMI_FULLREP;
hdlc->lmi.state |= LINK_STATE_FULLREP_SENT;
hdlc->lmi.state &= ~LINK_STATE_CHANGED;
}
fr_lmi_send(hdlc, reptype == LMI_FULLREP ? 1 : 0);
return 0;
}
/* DTE */
if (reptype != LMI_FULLREP || error)
return 0;
stat_len = 3;
pvc=hdlc->first_pvc;
while (pvc) {
pvc->newstate = 0;
pvc=pvc->next;
}
while (skb->len >= i + 2 + stat_len) {
u16 dlci;
u8 state=0;
if (skb->data[i] != (mode_is(hdlc, MODE_FR_CCITT) ?
LMI_CCITT_PVCSTAT : LMI_PVCSTAT)) {
printk(KERN_WARNING "%s: Invalid PVCSTAT ID: %x\n",
hdlc->name, skb->data[i]);
return 1;
}
i++;
if (skb->data[i] != stat_len) {
printk(KERN_WARNING "%s: Invalid PVCSTAT length: %x\n",
hdlc->name, skb->data[i]);
return 1;
}
i++;
dlci=status_to_dlci(hdlc, skb->data+i, &state);
pvc=find_pvc(hdlc, dlci);
if (pvc)
pvc->newstate = state;
else if (state == PVC_STATE_NEW)
printk(KERN_INFO "%s: new PVC available, DLCI=%u\n",
hdlc->name, dlci);
i+=stat_len;
}
pvc=hdlc->first_pvc;
while (pvc) {
if (pvc->newstate == PVC_STATE_NEW)
pvc->newstate = PVC_STATE_ACTIVE;
pvc->newstate |= (pvc->state &
~(PVC_STATE_NEW|PVC_STATE_ACTIVE));
if (pvc->state != pvc->newstate) {
pvc->state=pvc->newstate;
fr_log_dlci_active(pvc);
}
pvc=pvc->next;
}
/* Next full report after N391 polls */
hdlc->lmi.N391cnt = hdlc->lmi.N391;
return 0;
}
static void fr_lmi_send(hdlc_device *hdlc, int fullrep)
{
struct sk_buff *skb;
pvc_device *pvc=hdlc->first_pvc;
int len = mode_is(hdlc, MODE_FR_ANSI) ? LMI_ANSI_LENGTH : LMI_LENGTH;
int stat_len = 3;
u8 *data;
int i=0;
if (mode_is(hdlc, MODE_DCE) && fullrep) {
len += hdlc->pvc_count * (2 + stat_len);
if (len>HDLC_MAX_MTU) {
printk(KERN_WARNING "%s: Too many PVCs while sending "
"LMI full report\n", hdlc->name);
return;
}
}
skb=dev_alloc_skb(len);
memset(skb->data, 0, len);
skb_reserve(skb, 4);
fr_hard_header(skb, hdlc_to_dev(hdlc), LMI_PROTO, NULL, NULL, 0);
data=skb->tail;
data[i++] = LMI_CALLREF;
data[i++] = mode_is(hdlc, MODE_DCE) ? LMI_STATUS : LMI_STATUS_ENQUIRY;
if (mode_is(hdlc, MODE_FR_ANSI))
data[i++] = LMI_ANSI_LOCKSHIFT;
data[i++] = mode_is(hdlc, MODE_FR_CCITT) ? LMI_CCITT_REPTYPE :
LMI_REPTYPE;
data[i++] = LMI_REPT_LEN;
data[i++] = fullrep ? LMI_FULLREP : LMI_INTEGRITY;
data[i++] = mode_is(hdlc, MODE_FR_CCITT) ? LMI_CCITT_ALIVE : LMI_ALIVE;
data[i++] = LMI_INTEG_LEN;
data[i++] = hdlc->lmi.txseq = fr_lmi_nextseq(hdlc->lmi.txseq);
data[i++] = hdlc->lmi.rxseq;
if (mode_is(hdlc, MODE_DCE) && fullrep) {
while (pvc) {
data[i++] = mode_is(hdlc, MODE_FR_CCITT) ?
LMI_CCITT_PVCSTAT:LMI_PVCSTAT;
data[i++] = stat_len;
if ((hdlc->lmi.state & LINK_STATE_RELIABLE) &&
(pvc->netdev.flags & IFF_UP) &&
!(pvc->state & (PVC_STATE_ACTIVE|PVC_STATE_NEW))) {
pvc->state |= PVC_STATE_NEW;
fr_log_dlci_active(pvc);
}
dlci_to_status(hdlc, netdev_dlci(&pvc->netdev),
data+i, pvc->state);
i+=stat_len;
pvc=pvc->next;
}
}
skb_put(skb, i);
skb->priority=TC_PRIO_CONTROL;
skb->dev = hdlc_to_dev(hdlc);
dev_queue_xmit(skb);
}
static int hdlc_fr_pvc(hdlc_device *hdlc, int dlci)
{
pvc_device **pvc_p=&hdlc->first_pvc;
pvc_device *pvc;
int result, create=1; /* Create or delete PVC */
if(!capable(CAP_NET_ADMIN))
return -EPERM;
if(dlci<0) {
dlci=-dlci;
create=0;
}
if(dlci<=0 || dlci>=1024)
return -EINVAL; /* Only 10 bits for DLCI, DLCI=0 is reserved */
if(!mode_is(hdlc, MODE_FR))
return -EINVAL; /* Only meaningfull on FR */
while(*pvc_p) {
if (netdev_dlci(&(*pvc_p)->netdev)==dlci)
break;
pvc_p=&(*pvc_p)->next;
}
if (create) { /* Create PVC */
if (*pvc_p!=NULL)
return -EEXIST;
*pvc_p=kmalloc(sizeof(pvc_device), GFP_KERNEL);
pvc=*pvc_p;
memset(pvc, 0, sizeof(pvc_device));
pvc->netdev.name=pvc->name;
pvc->netdev.hard_start_xmit=pvc_xmit;
pvc->netdev.get_stats=pvc_get_stats;
pvc->netdev.open=pvc_open;
pvc->netdev.stop=pvc_close;
pvc->netdev.change_mtu=pvc_change_mtu;
pvc->netdev.mtu=PVC_MAX_MTU;
pvc->netdev.type=ARPHRD_DLCI;
pvc->netdev.hard_header_len=16;
pvc->netdev.hard_header=fr_hard_header;
pvc->netdev.tx_queue_len=0;
pvc->netdev.flags=IFF_POINTOPOINT;
dev_init_buffers(&pvc->netdev);
pvc->master=hdlc;
*(u16*)pvc->netdev.dev_addr=htons(dlci);
dlci_to_q922(pvc->netdev.broadcast, dlci);
pvc->netdev.addr_len=2; /* 16 bits is enough */
pvc->netdev.irq=hdlc_to_dev(hdlc)->irq;
result=dev_alloc_name(&pvc->netdev, "pvc%d");
if (result<0) {
kfree(pvc);
*pvc_p=NULL;
return result;
}
if (register_netdevice(&pvc->netdev)!=0) {
kfree(pvc);
*pvc_p=NULL;
return -EIO;
}
if (!mode_is(hdlc, MODE_SOFT) && hdlc->create_pvc) {
result=hdlc->create_pvc(pvc);
if (result) {
unregister_netdevice(&pvc->netdev);
kfree(pvc);
*pvc_p=NULL;
return result;
}
}
hdlc->lmi.state |= LINK_STATE_CHANGED;
hdlc->pvc_count++;
return 0;
}
if (*pvc_p==NULL) /* Delete PVC */
return -ENOENT;
pvc=*pvc_p;
if (pvc->netdev.flags & IFF_UP)
return -EBUSY; /* PVC in use */
if (!mode_is(hdlc, MODE_SOFT) && hdlc->destroy_pvc)
hdlc->destroy_pvc(pvc);
hdlc->lmi.state |= LINK_STATE_CHANGED;
hdlc->pvc_count--;
*pvc_p=pvc->next;
unregister_netdevice(&pvc->netdev);
kfree(pvc);
return 0;
}
static int hdlc_set_mode(hdlc_device *hdlc, int mode)
{
int result=-1; /* Default to soft modes */
if(!capable(CAP_NET_ADMIN))
return -EPERM;
if(hdlc_to_dev(hdlc)->flags & IFF_UP)
return -EBUSY;
hdlc_to_dev(hdlc)->addr_len=0;
hdlc->mode=MODE_NONE;
if (!(mode & MODE_SOFT))
switch(mode) {
case MODE_HDLC:
result = hdlc->set_mode ?
hdlc->set_mode(hdlc, MODE_HDLC) : 0;
break;
case MODE_X25: /* By card */
case MODE_CISCO:
case MODE_PPP:
case MODE_FR_ANSI:
case MODE_FR_CCITT:
case MODE_FR_ANSI | MODE_DCE:
case MODE_FR_CCITT | MODE_DCE:
result = hdlc->set_mode ?
hdlc->set_mode(hdlc, mode) : -ENOSYS;
break;
default:
return -EINVAL;
}
if (result) {
mode |= MODE_SOFT; /* Try "host software" protocol */
switch(mode & ~MODE_SOFT) {
case MODE_CISCO:
case MODE_PPP:
break;
case MODE_FR_ANSI:
case MODE_FR_CCITT:
case MODE_FR_ANSI | MODE_DCE:
case MODE_FR_CCITT | MODE_DCE:
hdlc_to_dev(hdlc)->addr_len=2;
*(u16*)hdlc_to_dev(hdlc)->dev_addr=htons(LMI_DLCI);
dlci_to_q922(hdlc_to_dev(hdlc)->broadcast, LMI_DLCI);
break;
default:
return -EINVAL;
}
result = hdlc->set_mode ?
hdlc->set_mode(hdlc, MODE_HDLC) : 0;
}
if (result)
return result;
hdlc->mode=mode;
if (mode_is(hdlc, MODE_PPP))
hdlc_to_dev(hdlc)->type=ARPHRD_PPP;
if (mode_is(hdlc, MODE_X25))
hdlc_to_dev(hdlc)->type=ARPHRD_X25;
else if (mode_is(hdlc, MODE_FR))
hdlc_to_dev(hdlc)->type=ARPHRD_FRAD;
else /* Conflict - raw HDLC and Cisco */
hdlc_to_dev(hdlc)->type=ARPHRD_HDLC;
memset(&(hdlc->stats), 0, sizeof(struct net_device_stats));
destroy_pvc_list(hdlc);
return 0;
}
static int hdlc_open(struct net_device *dev)
{
hdlc_device *hdlc = dev_to_hdlc(dev);
int result;
if (hdlc->mode == MODE_NONE)
return -ENOSYS;
memset(&(hdlc->stats), 0, sizeof(struct net_device_stats));
if (mode_is(hdlc, MODE_FR | MODE_SOFT) ||
mode_is(hdlc, MODE_CISCO | MODE_SOFT))
fr_cisco_open(hdlc);
#ifdef CONFIG_HDLC_PPP
else if (mode_is(hdlc, MODE_PPP | MODE_SOFT)) {
sppp_attach(&hdlc->pppdev);
/* sppp_attach nukes them. We don't need syncppp's ioctl */
dev->do_ioctl = hdlc_ioctl;
hdlc->pppdev.sppp.pp_flags &= ~PP_CISCO;
dev->type = ARPHRD_PPP;
result = sppp_open(dev);
if (result) {
sppp_detach(dev);
return result;
}
}
#endif
#ifdef CONFIG_HDLC_X25
else if (mode_is(hdlc, MODE_X25)) {
struct lapb_register_struct cb;
cb.connect_confirmation = x25_connected;
cb.connect_indication = x25_connected;
cb.disconnect_confirmation = x25_disconnected;
cb.disconnect_indication = x25_disconnected;
cb.data_indication = x25_data_indication;
cb.data_transmit = x25_data_transmit;
result = lapb_register(hdlc, &cb);
if (result != LAPB_OK)
return result;
}
#endif
result = hdlc->open(hdlc);
if (result) {
if (mode_is(hdlc, MODE_FR | MODE_SOFT) ||
mode_is(hdlc, MODE_CISCO | MODE_SOFT))
fr_cisco_close(hdlc);
#ifdef CONFIG_HDLC_PPP
else if (mode_is(hdlc, MODE_PPP | MODE_SOFT)) {
sppp_close(dev);
sppp_detach(dev);
dev->rebuild_header = NULL;
dev->change_mtu = hdlc_change_mtu;
dev->mtu = HDLC_MAX_MTU;
dev->hard_header_len = 16;
}
#endif
#ifdef CONFIG_HDLC_X25
else if (mode_is(hdlc, MODE_X25))
lapb_unregister(hdlc);
#endif
}
return result;
}