[linux.git] / net / atm / pvc.c

/* net/atm/pvc.c - ATM PVC sockets */

/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */


#include <linux/net.h>		/* struct socket, struct proto_ops */
#include <linux/atm.h>		/* ATM stuff */
#include <linux/atmdev.h>	/* ATM devices */
#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_* */

#include "resources.h"		/* devs and vccs */
#include "common.h"		/* common for PVCs and SVCs */


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 sock *sk = sock->sk;
	struct sockaddr_atmpvc *addr;
	struct atm_vcc *vcc;
	int error;

	if (sockaddr_len != sizeof(struct sockaddr_atmpvc)) return -EINVAL;
	addr = (struct sockaddr_atmpvc *) sockaddr;
	if (addr->sap_family != AF_ATMPVC) return -EAFNOSUPPORT;
	lock_sock(sk);
	vcc = ATM_SD(sock);
	if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
		error = -EBADFD;
		goto out;
	}
	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;
	}
	error = vcc_connect(sock, addr->sap_addr.itf, addr->sap_addr.vpi,
			    addr->sap_addr.vci);
out:
	release_sock(sk);
	return error;
}


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_setsockopt(struct socket *sock, int level, int optname,
			  char __user *optval, int optlen)
{
	struct sock *sk = sock->sk;
	int error;

	lock_sock(sk);
	error = vcc_setsockopt(sock, level, optname, optval, optlen);
	release_sock(sk);
	return error;
}


static int pvc_getsockopt(struct socket *sock, int level, int optname,
			  char __user *optval, int __user *optlen)
{
	struct sock *sk = sock->sk;
	int error;

	lock_sock(sk);
	error = vcc_getsockopt(sock, level, optname, optval, optlen);
	release_sock(sk);
	return error;
}


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 const struct proto_ops pvc_proto_ops = {
	.family =	PF_ATMPVC,
	.owner =	THIS_MODULE,

	.release =	vcc_release,
	.bind =		pvc_bind,
	.connect =	pvc_connect,
	.socketpair =	sock_no_socketpair,
	.accept =	sock_no_accept,
	.getname =	pvc_getname,
	.poll =		vcc_poll,
	.ioctl =	vcc_ioctl,
	.listen =	sock_no_listen,
	.shutdown =	pvc_shutdown,
	.setsockopt =	pvc_setsockopt,
	.getsockopt =	pvc_getsockopt,
	.sendmsg =	vcc_sendmsg,
	.recvmsg =	vcc_recvmsg,
	.mmap =		sock_no_mmap,
	.sendpage =	sock_no_sendpage,
};


static int pvc_create(struct net *net, struct socket *sock,int protocol)
{
	if (net != &init_net)
		return -EAFNOSUPPORT;

	sock->ops = &pvc_proto_ops;
	return vcc_create(net, sock, protocol, PF_ATMPVC);
}


static struct net_proto_family pvc_family_ops = {
	.family = PF_ATMPVC,
	.create = pvc_create,
	.owner = THIS_MODULE,
};


/*
 *	Initialize the ATM PVC protocol family
 */


int __init atmpvc_init(void)
{
	return sock_register(&pvc_family_ops);
}

void atmpvc_exit(void)
{
	sock_unregister(PF_ATMPVC);
}
Commit	Line	Data
1da177e4 LT	1	/* net/atm/pvc.c - ATM PVC sockets */
	2
	3	/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
	4
	5
1da177e4 LT	6	#include <linux/net.h> /* struct socket, struct proto_ops */
	7	#include <linux/atm.h> /* ATM stuff */
	8	#include <linux/atmdev.h> /* ATM devices */
	9	#include <linux/errno.h> /* error codes */
	10	#include <linux/kernel.h> /* printk */
	11	#include <linux/init.h>
	12	#include <linux/skbuff.h>
	13	#include <linux/bitops.h>
	14	#include <net/sock.h> /* for sock_no_* */
	15
	16	#include "resources.h" /* devs and vccs */
	17	#include "common.h" /* common for PVCs and SVCs */
	18
	19
	20	static int pvc_shutdown(struct socket *sock,int how)
	21	{
	22	return 0;
	23	}
	24
	25
	26	static int pvc_bind(struct socket sock,struct sockaddr sockaddr,
	27	int sockaddr_len)
	28	{
	29	struct sock *sk = sock->sk;
	30	struct sockaddr_atmpvc *addr;
	31	struct atm_vcc *vcc;
	32	int error;
	33
	34	if (sockaddr_len != sizeof(struct sockaddr_atmpvc)) return -EINVAL;
	35	addr = (struct sockaddr_atmpvc *) sockaddr;
	36	if (addr->sap_family != AF_ATMPVC) return -EAFNOSUPPORT;
	37	lock_sock(sk);
	38	vcc = ATM_SD(sock);
	39	if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
	40	error = -EBADFD;
	41	goto out;
	42	}
	43	if (test_bit(ATM_VF_PARTIAL,&vcc->flags)) {
	44	if (vcc->vpi != ATM_VPI_UNSPEC) addr->sap_addr.vpi = vcc->vpi;
	45	if (vcc->vci != ATM_VCI_UNSPEC) addr->sap_addr.vci = vcc->vci;
	46	}
	47	error = vcc_connect(sock, addr->sap_addr.itf, addr->sap_addr.vpi,
	48	addr->sap_addr.vci);
	49	out:
	50	release_sock(sk);
	51	return error;
	52	}
	53
	54
	55	static int pvc_connect(struct socket sock,struct sockaddr sockaddr,
	56	int sockaddr_len,int flags)
	57	{
	58	return pvc_bind(sock,sockaddr,sockaddr_len);
	59	}
	60
	61	static int pvc_setsockopt(struct socket *sock, int level, int optname,
	62	char __user *optval, int optlen)
	63	{
	64	struct sock *sk = sock->sk;
	65	int error;
	66
	67	lock_sock(sk);
	68	error = vcc_setsockopt(sock, level, optname, optval, optlen);
	69	release_sock(sk);
70	return error;
71	}
72
73
74	static int pvc_getsockopt(struct socket *sock, int level, int optname,
f7d57453	75	char __user optval, int __user optlen)
1da177e4 LT	76	{
	77	struct sock *sk = sock->sk;
	78	int error;
	79
	80	lock_sock(sk);
	81	error = vcc_getsockopt(sock, level, optname, optval, optlen);
	82	release_sock(sk);
	83	return error;
	84	}
	85
	86
	87	static int pvc_getname(struct socket sock,struct sockaddr sockaddr,
	88	int *sockaddr_len,int peer)
	89	{
	90	struct sockaddr_atmpvc *addr;
	91	struct atm_vcc *vcc = ATM_SD(sock);
	92
	93	if (!vcc->dev \|\| !test_bit(ATM_VF_ADDR,&vcc->flags)) return -ENOTCONN;
f7d57453	94	*sockaddr_len = sizeof(struct sockaddr_atmpvc);
1da177e4 LT	95	addr = (struct sockaddr_atmpvc *) sockaddr;
	96	addr->sap_family = AF_ATMPVC;
	97	addr->sap_addr.itf = vcc->dev->number;
	98	addr->sap_addr.vpi = vcc->vpi;
	99	addr->sap_addr.vci = vcc->vci;
	100	return 0;
	101	}
	102
	103
90ddc4f0	104	static const struct proto_ops pvc_proto_ops = {
1da177e4 LT	105	.family = PF_ATMPVC,
	106	.owner = THIS_MODULE,
	107
	108	.release = vcc_release,
	109	.bind = pvc_bind,
	110	.connect = pvc_connect,
	111	.socketpair = sock_no_socketpair,
	112	.accept = sock_no_accept,
	113	.getname = pvc_getname,
	114	.poll = vcc_poll,
	115	.ioctl = vcc_ioctl,
	116	.listen = sock_no_listen,
	117	.shutdown = pvc_shutdown,
	118	.setsockopt = pvc_setsockopt,
	119	.getsockopt = pvc_getsockopt,
	120	.sendmsg = vcc_sendmsg,
	121	.recvmsg = vcc_recvmsg,
	122	.mmap = sock_no_mmap,
	123	.sendpage = sock_no_sendpage,
	124	};
	125
	126
1b8d7ae4	127	static int pvc_create(struct net net, struct socket sock,int protocol)
1da177e4	128	{
1b8d7ae4 EB	129	if (net != &init_net)
	130	return -EAFNOSUPPORT;
	131
1da177e4	132	sock->ops = &pvc_proto_ops;
1b8d7ae4	133	return vcc_create(net, sock, protocol, PF_ATMPVC);
1da177e4 LT	134	}
	135
	136
	137	static struct net_proto_family pvc_family_ops = {
	138	.family = PF_ATMPVC,
	139	.create = pvc_create,
	140	.owner = THIS_MODULE,
	141	};
	142
	143
	144	/*
	145	* Initialize the ATM PVC protocol family
	146	*/
	147
	148
	149	int __init atmpvc_init(void)
	150	{
	151	return sock_register(&pvc_family_ops);
	152	}
	153
	154	void atmpvc_exit(void)
	155	{
	156	sock_unregister(PF_ATMPVC);
	157	}