838361fe78
Simply use netdev_priv() to replace netdev->priv. Signed-off-by: Wang Chen <wangchen@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
99 lines
3 KiB
C
99 lines
3 KiB
C
/* $Id: isdn_concap.c,v 1.1.2.2 2004/01/12 22:37:19 keil Exp $
|
|
*
|
|
* Linux ISDN subsystem, protocol encapsulation
|
|
*
|
|
* This software may be used and distributed according to the terms
|
|
* of the GNU General Public License, incorporated herein by reference.
|
|
*
|
|
*/
|
|
|
|
/* Stuff to support the concap_proto by isdn4linux. isdn4linux - specific
|
|
* stuff goes here. Stuff that depends only on the concap protocol goes to
|
|
* another -- protocol specific -- source file.
|
|
*
|
|
*/
|
|
|
|
|
|
#include <linux/isdn.h>
|
|
#include "isdn_x25iface.h"
|
|
#include "isdn_net.h"
|
|
#include <linux/concap.h>
|
|
#include "isdn_concap.h"
|
|
|
|
|
|
/* The following set of device service operations are for encapsulation
|
|
protocols that require for reliable datalink semantics. That means:
|
|
|
|
- before any data is to be submitted the connection must explicitly
|
|
be set up.
|
|
- after the successful set up of the connection is signalled the
|
|
connection is considered to be reliably up.
|
|
|
|
Auto-dialing ist not compatible with this requirements. Thus, auto-dialing
|
|
is completely bypassed.
|
|
|
|
It might be possible to implement a (non standardized) datalink protocol
|
|
that provides a reliable data link service while using some auto dialing
|
|
mechanism. Such a protocol would need an auxiliary channel (i.e. user-user-
|
|
signaling on the D-channel) while the B-channel is down.
|
|
*/
|
|
|
|
|
|
static int isdn_concap_dl_data_req(struct concap_proto *concap, struct sk_buff *skb)
|
|
{
|
|
struct net_device *ndev = concap -> net_dev;
|
|
isdn_net_dev *nd = ((isdn_net_local *) netdev_priv(ndev))->netdev;
|
|
isdn_net_local *lp = isdn_net_get_locked_lp(nd);
|
|
|
|
IX25DEBUG( "isdn_concap_dl_data_req: %s \n", concap->net_dev->name);
|
|
if (!lp) {
|
|
IX25DEBUG( "isdn_concap_dl_data_req: %s : isdn_net_send_skb returned %d\n", concap -> net_dev -> name, 1);
|
|
return 1;
|
|
}
|
|
lp->huptimer = 0;
|
|
isdn_net_writebuf_skb(lp, skb);
|
|
spin_unlock_bh(&lp->xmit_lock);
|
|
IX25DEBUG( "isdn_concap_dl_data_req: %s : isdn_net_send_skb returned %d\n", concap -> net_dev -> name, 0);
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int isdn_concap_dl_connect_req(struct concap_proto *concap)
|
|
{
|
|
struct net_device *ndev = concap -> net_dev;
|
|
isdn_net_local *lp = (isdn_net_local *) netdev_priv(ndev);
|
|
int ret;
|
|
IX25DEBUG( "isdn_concap_dl_connect_req: %s \n", ndev -> name);
|
|
|
|
/* dial ... */
|
|
ret = isdn_net_dial_req( lp );
|
|
if ( ret ) IX25DEBUG("dialing failed\n");
|
|
return ret;
|
|
}
|
|
|
|
static int isdn_concap_dl_disconn_req(struct concap_proto *concap)
|
|
{
|
|
IX25DEBUG( "isdn_concap_dl_disconn_req: %s \n", concap -> net_dev -> name);
|
|
|
|
isdn_net_hangup( concap -> net_dev );
|
|
return 0;
|
|
}
|
|
|
|
struct concap_device_ops isdn_concap_reliable_dl_dops = {
|
|
&isdn_concap_dl_data_req,
|
|
&isdn_concap_dl_connect_req,
|
|
&isdn_concap_dl_disconn_req
|
|
};
|
|
|
|
/* The following should better go into a dedicated source file such that
|
|
this sourcefile does not need to include any protocol specific header
|
|
files. For now:
|
|
*/
|
|
struct concap_proto * isdn_concap_new( int encap )
|
|
{
|
|
switch ( encap ) {
|
|
case ISDN_NET_ENCAP_X25IFACE:
|
|
return isdn_x25iface_proto_new();
|
|
}
|
|
return NULL;
|
|
}
|