Viewing file:  pvc.c (3.33 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* net/atm/pvc.c - ATM PVC sockets */
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
#include <linux/config.h>
#include <linux/net.h> /* struct socket, struct net_proto,
struct proto_ops */
#include <linux/atm.h> /* ATM stuff */
#include <linux/atmdev.h> /* ATM devices */
#include <linux/atmclip.h> /* Classical IP over ATM */
#include <linux/errno.h> /* error codes */
#include <linux/kernel.h> /* printk */
#include <linux/init.h>
#include <linux/skbuff.h>
#include <linux/bitops.h>
#include <net/sock.h> /* for sock_no_* */
#ifdef CONFIG_ATM_CLIP
#include <net/atmclip.h>
#endif
#include "resources.h" /* devs and vccs */
#include "common.h" /* common for PVCs and SVCs */
#ifndef NULL
#define NULL 0
#endif
static int pvc_shutdown(struct socket *sock,int how)
{
return 0;
}
static int pvc_bind(struct socket *sock,struct sockaddr *sockaddr,
int sockaddr_len)
{
struct sockaddr_atmpvc *addr;
struct atm_vcc *vcc;
if (sockaddr_len != sizeof(struct sockaddr_atmpvc)) return -EINVAL;
addr = (struct sockaddr_atmpvc *) sockaddr;
if (addr->sap_family != AF_ATMPVC) return -EAFNOSUPPORT;
vcc = ATM_SD(sock);
if (!test_bit(ATM_VF_HASQOS,&vcc->flags)) return -EBADFD;
if (test_bit(ATM_VF_PARTIAL,&vcc->flags)) {
if (vcc->vpi != ATM_VPI_UNSPEC) addr->sap_addr.vpi = vcc->vpi;
if (vcc->vci != ATM_VCI_UNSPEC) addr->sap_addr.vci = vcc->vci;
}
return atm_connect(sock,addr->sap_addr.itf,addr->sap_addr.vpi,
addr->sap_addr.vci);
}
static int pvc_connect(struct socket *sock,struct sockaddr *sockaddr,
int sockaddr_len,int flags)
{
return pvc_bind(sock,sockaddr,sockaddr_len);
}
static int pvc_getname(struct socket *sock,struct sockaddr *sockaddr,
int *sockaddr_len,int peer)
{
struct sockaddr_atmpvc *addr;
struct atm_vcc *vcc = ATM_SD(sock);
if (!vcc->dev || !test_bit(ATM_VF_ADDR,&vcc->flags)) return -ENOTCONN;
*sockaddr_len = sizeof(struct sockaddr_atmpvc);
addr = (struct sockaddr_atmpvc *) sockaddr;
addr->sap_family = AF_ATMPVC;
addr->sap_addr.itf = vcc->dev->number;
addr->sap_addr.vpi = vcc->vpi;
addr->sap_addr.vci = vcc->vci;
return 0;
}
static struct proto_ops SOCKOPS_WRAPPED(pvc_proto_ops) = {
family: PF_ATMPVC,
release: atm_release,
bind: pvc_bind,
connect: pvc_connect,
socketpair: sock_no_socketpair,
accept: sock_no_accept,
getname: pvc_getname,
poll: atm_poll,
ioctl: atm_ioctl,
listen: sock_no_listen,
shutdown: pvc_shutdown,
setsockopt: atm_setsockopt,
getsockopt: atm_getsockopt,
sendmsg: atm_sendmsg,
recvmsg: atm_recvmsg,
mmap: sock_no_mmap,
sendpage: sock_no_sendpage,
};
#include <linux/smp_lock.h>
SOCKOPS_WRAP(pvc_proto, PF_ATMPVC);
static int pvc_create(struct socket *sock,int protocol)
{
sock->ops = &pvc_proto_ops;
return atm_create(sock,protocol,PF_ATMPVC);
}
static struct net_proto_family pvc_family_ops = {
PF_ATMPVC,
pvc_create,
0, /* no authentication */
0, /* no encryption */
0 /* no encrypt_net */
};
/*
* Initialize the ATM PVC protocol family
*/
static int __init atmpvc_init(void)
{
int error;
error = sock_register(&pvc_family_ops);
if (error < 0) {
printk(KERN_ERR "ATMPVC: can't register (%d)",error);
return error;
}
#ifdef CONFIG_ATM_CLIP
atm_clip_init();
#endif
#ifdef CONFIG_PROC_FS
error = atm_proc_init();
if (error) printk("atm_proc_init fails with %d\n",error);
#endif
return 0;
}
module_init(atmpvc_init);
|