[linux-2.6-block.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 <linux/export.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, unsigned 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;
	memset(addr, 0, sizeof(*addr));
	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,
#ifdef CONFIG_COMPAT
	.compat_ioctl = vcc_compat_ioctl,
#endif
	.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,
		      int kern)
{
	if (net != &init_net)
		return -EAFNOSUPPORT;

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

static const 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>
bc3b2d7f	14	#include <linux/export.h>
1da177e4 LT	15	#include <net/sock.h> /* for sock_no_* */
	16
	17	#include "resources.h" /* devs and vccs */
	18	#include "common.h" /* common for PVCs and SVCs */
	19
	20
6b6dd498	21	static int pvc_shutdown(struct socket *sock, int how)
1da177e4 LT	22	{
	23	return 0;
	24	}
	25
6b6dd498 JP	26	static int pvc_bind(struct socket sock, struct sockaddr sockaddr,
6b6dd498 JP	27	int sockaddr_len)
1da177e4 LT	28	{
	29	struct sock *sk = sock->sk;
	30	struct sockaddr_atmpvc *addr;
	31	struct atm_vcc *vcc;
	32	int error;
	33
6b6dd498 JP	34	if (sockaddr_len != sizeof(struct sockaddr_atmpvc))
	35	return -EINVAL;
	36	addr = (struct sockaddr_atmpvc *)sockaddr;
	37	if (addr->sap_family != AF_ATMPVC)
	38	return -EAFNOSUPPORT;
1da177e4 LT	39	lock_sock(sk);
	40	vcc = ATM_SD(sock);
	41	if (!test_bit(ATM_VF_HASQOS, &vcc->flags)) {
	42	error = -EBADFD;
	43	goto out;
	44	}
6b6dd498 JP	45	if (test_bit(ATM_VF_PARTIAL, &vcc->flags)) {
	46	if (vcc->vpi != ATM_VPI_UNSPEC)
	47	addr->sap_addr.vpi = vcc->vpi;
	48	if (vcc->vci != ATM_VCI_UNSPEC)
	49	addr->sap_addr.vci = vcc->vci;
1da177e4 LT	50	}
	51	error = vcc_connect(sock, addr->sap_addr.itf, addr->sap_addr.vpi,
	52	addr->sap_addr.vci);
	53	out:
	54	release_sock(sk);
	55	return error;
	56	}
	57
6b6dd498 JP	58	static int pvc_connect(struct socket sock, struct sockaddr sockaddr,
6b6dd498 JP	59	int sockaddr_len, int flags)
1da177e4	60	{
6b6dd498	61	return pvc_bind(sock, sockaddr, sockaddr_len);
1da177e4 LT	62	}
	63
	64	static int pvc_setsockopt(struct socket *sock, int level, int optname,
b7058842	65	char __user *optval, unsigned int optlen)
1da177e4 LT	66	{
	67	struct sock *sk = sock->sk;
	68	int error;
	69
	70	lock_sock(sk);
	71	error = vcc_setsockopt(sock, level, optname, optval, optlen);
	72	release_sock(sk);
	73	return error;
	74	}
	75
1da177e4	76	static int pvc_getsockopt(struct socket *sock, int level, int optname,
f7d57453	77	char __user optval, int __user optlen)
1da177e4 LT	78	{
	79	struct sock *sk = sock->sk;
	80	int error;
	81
	82	lock_sock(sk);
	83	error = vcc_getsockopt(sock, level, optname, optval, optlen);
	84	release_sock(sk);
	85	return error;
	86	}
	87
6b6dd498 JP	88	static int pvc_getname(struct socket sock, struct sockaddr sockaddr,
6b6dd498 JP	89	int *sockaddr_len, int peer)
1da177e4 LT	90	{
	91	struct sockaddr_atmpvc *addr;
	92	struct atm_vcc *vcc = ATM_SD(sock);
	93
6b6dd498 JP	94	if (!vcc->dev \|\| !test_bit(ATM_VF_ADDR, &vcc->flags))
6b6dd498 JP	95	return -ENOTCONN;
f7d57453	96	*sockaddr_len = sizeof(struct sockaddr_atmpvc);
6b6dd498	97	addr = (struct sockaddr_atmpvc *)sockaddr;
3c0c5cfd	98	memset(addr, 0, sizeof(*addr));
1da177e4 LT	99	addr->sap_family = AF_ATMPVC;
	100	addr->sap_addr.itf = vcc->dev->number;
	101	addr->sap_addr.vpi = vcc->vpi;
	102	addr->sap_addr.vci = vcc->vci;
	103	return 0;
	104	}
	105
90ddc4f0	106	static const struct proto_ops pvc_proto_ops = {
1da177e4 LT	107	.family = PF_ATMPVC,
	108	.owner = THIS_MODULE,
	109
	110	.release = vcc_release,
	111	.bind = pvc_bind,
	112	.connect = pvc_connect,
	113	.socketpair = sock_no_socketpair,
	114	.accept = sock_no_accept,
	115	.getname = pvc_getname,
	116	.poll = vcc_poll,
	117	.ioctl = vcc_ioctl,
8865c418 DW	118	#ifdef CONFIG_COMPAT
	119	.compat_ioctl = vcc_compat_ioctl,
	120	#endif
1da177e4 LT	121	.listen = sock_no_listen,
	122	.shutdown = pvc_shutdown,
	123	.setsockopt = pvc_setsockopt,
	124	.getsockopt = pvc_getsockopt,
	125	.sendmsg = vcc_sendmsg,
	126	.recvmsg = vcc_recvmsg,
	127	.mmap = sock_no_mmap,
	128	.sendpage = sock_no_sendpage,
	129	};
	130
	131
3f378b68 EP	132	static int pvc_create(struct net net, struct socket sock, int protocol,
3f378b68 EP	133	int kern)
1da177e4	134	{
1b8d7ae4 EB	135	if (net != &init_net)
	136	return -EAFNOSUPPORT;
	137
1da177e4	138	sock->ops = &pvc_proto_ops;
11aa9c28	139	return vcc_create(net, sock, protocol, PF_ATMPVC, kern);
1da177e4 LT	140	}
1da177e4 LT	141
ec1b4cf7	142	static const struct net_proto_family pvc_family_ops = {
1da177e4 LT	143	.family = PF_ATMPVC,
	144	.create = pvc_create,
	145	.owner = THIS_MODULE,
	146	};
	147
	148
	149	/*
	150	* Initialize the ATM PVC protocol family
	151	*/
	152
	153
	154	int __init atmpvc_init(void)
	155	{
	156	return sock_register(&pvc_family_ops);
	157	}
	158
	159	void atmpvc_exit(void)
	160	{
	161	sock_unregister(PF_ATMPVC);
	162	}