patch-2.3.15 linux/net/atm/pvc.c

• Lines: 167
• Date: Mon Aug 23 09:56:32 1999
• Orig file: v2.3.14/linux/net/atm/pvc.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.3.14/linux/net/atm/pvc.c linux/net/atm/pvc.c
@@ -0,0 +1,166 @@
+/* net/atm/pvc.c - ATM PVC sockets */
+
+/* Written 1995-1998 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 <net/sock.h>		/* for sock_no_* */
+#ifdef CONFIG_AREQUIPA
+#include <linux/arequipa.h>
+#endif
+#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 (!(vcc->flags & ATM_VF_HASQOS)) return -EBADFD;
+	if (vcc->flags & ATM_VF_PARTIAL) {
+		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_listen(struct socket *sock,int backlog)
+{
+	return -EOPNOTSUPP;
+}
+
+
+static int pvc_accept(struct socket *sock,struct socket *newsock,int flags)
+{
+	return -EOPNOTSUPP;
+}
+
+
+static int pvc_getname(struct socket *sock,struct sockaddr *sockaddr,
+    int *sockaddr_len,int peer)
+{
+	struct sockaddr_atmpvc *addr;
+	struct atm_vcc *vcc;
+
+#if 0 /* add some sanity checks later ... @@@ */
+	if (sock->state != SS_CONNECTED) return -EINVAL;
+#endif
+        *sockaddr_len = sizeof(struct sockaddr_atmpvc);
+	addr = (struct sockaddr_atmpvc *) sockaddr;
+	vcc = ATM_SD(sock);
+	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) = {
+	PF_ATMPVC,
+	atm_release,
+	pvc_bind,
+	pvc_connect,
+	sock_no_socketpair,
+	pvc_accept,
+	pvc_getname,
+	atm_poll,
+	atm_ioctl,
+	pvc_listen,
+	pvc_shutdown,
+	atm_setsockopt,
+	atm_getsockopt,
+	sock_no_fcntl,
+	atm_sendmsg,
+	atm_recvmsg,
+	sock_no_mmap
+};
+
+#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
+ */
+
+
+__initfunc(void atmpvc_proto_init(struct net_proto *pro))
+{
+	int error;
+
+	error = sock_register(&pvc_family_ops);
+	if (error < 0) {
+		printk(KERN_ERR "ATMPVC: can't register (%d)",error);
+		return;
+	}
+#ifdef CONFIG_ATM_CLIP
+	clip_tbl.lock = RW_LOCK_UNLOCKED;
+	if (clip_tbl.kmem_cachep == NULL)
+		clip_tbl.kmem_cachep = kmem_cache_create(clip_tbl.id,
+							 clip_tbl.entry_size,
+							 0, SLAB_HWCACHE_ALIGN,
+							 NULL, NULL);
+#endif
+#ifdef CONFIG_AREQUIPA
+	(void) atm_init_arequipa();
+#endif
+#ifdef CONFIG_PROC_FS
+	error = atm_proc_init();
+	if (error) printk("atm_proc_init fails with %d\n",error);
+#endif
+}