[net-next-2.6.git] / include / linux / atmdev.h

/* atmdev.h - ATM device driver declarations and various related items */
 
/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
 

#ifndef LINUX_ATMDEV_H
#define LINUX_ATMDEV_H


#include <linux/atmapi.h>
#include <linux/atm.h>
#include <linux/atmioc.h>


#define ESI_LEN		6

#define ATM_OC3_PCR	(155520000/270*260/8/53)
			/* OC3 link rate:  155520000 bps
			   SONET overhead: /270*260 (9 section, 1 path)
			   bits per cell:  /8/53
			   max cell rate:  353207.547 cells/sec */
#define ATM_25_PCR	((25600000/8-8000)/54)
			/* 25 Mbps ATM cell rate (59111) */
#define ATM_OC12_PCR	(622080000/1080*1040/8/53)
			/* OC12 link rate: 622080000 bps
			   SONET overhead: /1080*1040
			   bits per cell:  /8/53
			   max cell rate:  1412830.188 cells/sec */
#define ATM_DS3_PCR	(8000*12)
			/* DS3: 12 cells in a 125 usec time slot */


#define __AAL_STAT_ITEMS \
    __HANDLE_ITEM(tx);			/* TX okay */ \
    __HANDLE_ITEM(tx_err);		/* TX errors */ \
    __HANDLE_ITEM(rx);			/* RX okay */ \
    __HANDLE_ITEM(rx_err);		/* RX errors */ \
    __HANDLE_ITEM(rx_drop);		/* RX out of memory */

struct atm_aal_stats {
#define __HANDLE_ITEM(i) int i
	__AAL_STAT_ITEMS
#undef __HANDLE_ITEM
};


struct atm_dev_stats {
	struct atm_aal_stats aal0;
	struct atm_aal_stats aal34;
	struct atm_aal_stats aal5;
} __ATM_API_ALIGN;


#define ATM_GETLINKRATE	_IOW('a',ATMIOC_ITF+1,struct atmif_sioc)
					/* get link rate */
#define ATM_GETNAMES	_IOW('a',ATMIOC_ITF+3,struct atm_iobuf)
					/* get interface names (numbers) */
#define ATM_GETTYPE	_IOW('a',ATMIOC_ITF+4,struct atmif_sioc)
					/* get interface type name */
#define ATM_GETESI	_IOW('a',ATMIOC_ITF+5,struct atmif_sioc)
					/* get interface ESI */
#define ATM_GETADDR	_IOW('a',ATMIOC_ITF+6,struct atmif_sioc)
					/* get itf's local ATM addr. list */
#define ATM_RSTADDR	_IOW('a',ATMIOC_ITF+7,struct atmif_sioc)
					/* reset itf's ATM address list */
#define ATM_ADDADDR	_IOW('a',ATMIOC_ITF+8,struct atmif_sioc)
					/* add a local ATM address */
#define ATM_DELADDR	_IOW('a',ATMIOC_ITF+9,struct atmif_sioc)
					/* remove a local ATM address */
#define ATM_GETCIRANGE	_IOW('a',ATMIOC_ITF+10,struct atmif_sioc)
					/* get connection identifier range */
#define ATM_SETCIRANGE	_IOW('a',ATMIOC_ITF+11,struct atmif_sioc)
					/* set connection identifier range */
#define ATM_SETESI	_IOW('a',ATMIOC_ITF+12,struct atmif_sioc)
					/* set interface ESI */
#define ATM_SETESIF	_IOW('a',ATMIOC_ITF+13,struct atmif_sioc)
					/* force interface ESI */
#define ATM_ADDLECSADDR	_IOW('a', ATMIOC_ITF+14, struct atmif_sioc)
					/* register a LECS address */
#define ATM_DELLECSADDR	_IOW('a', ATMIOC_ITF+15, struct atmif_sioc)
					/* unregister a LECS address */
#define ATM_GETLECSADDR	_IOW('a', ATMIOC_ITF+16, struct atmif_sioc)
					/* retrieve LECS address(es) */

#define ATM_GETSTAT	_IOW('a',ATMIOC_SARCOM+0,struct atmif_sioc)
					/* get AAL layer statistics */
#define ATM_GETSTATZ	_IOW('a',ATMIOC_SARCOM+1,struct atmif_sioc)
					/* get AAL layer statistics and zero */
#define ATM_GETLOOP	_IOW('a',ATMIOC_SARCOM+2,struct atmif_sioc)
					/* get loopback mode */
#define ATM_SETLOOP	_IOW('a',ATMIOC_SARCOM+3,struct atmif_sioc)
					/* set loopback mode */
#define ATM_QUERYLOOP	_IOW('a',ATMIOC_SARCOM+4,struct atmif_sioc)
					/* query supported loopback modes */
#define ATM_SETSC	_IOW('a',ATMIOC_SPECIAL+1,int)
					/* enable or disable single-copy */
#define ATM_SETBACKEND	_IOW('a',ATMIOC_SPECIAL+2,atm_backend_t)
					/* set backend handler */
#define ATM_NEWBACKENDIF _IOW('a',ATMIOC_SPECIAL+3,atm_backend_t)
					/* use backend to make new if */
#define ATM_ADDPARTY  	_IOW('a', ATMIOC_SPECIAL+4,struct atm_iobuf)
 					/* add party to p2mp call */
#ifdef CONFIG_COMPAT
/* It actually takes struct sockaddr_atmsvc, not struct atm_iobuf */
#define COMPAT_ATM_ADDPARTY  	_IOW('a', ATMIOC_SPECIAL+4,struct compat_atm_iobuf)
#endif
#define ATM_DROPPARTY 	_IOW('a', ATMIOC_SPECIAL+5,int)
					/* drop party from p2mp call */

/*
 * These are backend handkers that can be set via the ATM_SETBACKEND call
 * above.  In the future we may support dynamic loading of these - for now,
 * they're just being used to share the ATMIOC_BACKEND ioctls
 */
#define ATM_BACKEND_RAW		0	
#define ATM_BACKEND_PPP		1	/* PPPoATM - RFC2364 */
#define ATM_BACKEND_BR2684	2	/* Bridged RFC1483/2684 */

/* for ATM_GETTYPE */
#define ATM_ITFTYP_LEN	8	/* maximum length of interface type name */

/*
 * Loopback modes for ATM_{PHY,SAR}_{GET,SET}LOOP
 */

/* Point of loopback				CPU-->SAR-->PHY-->line--> ... */
#define __ATM_LM_NONE	0	/* no loop back     ^     ^     ^      ^      */
#define __ATM_LM_AAL	1	/* loop back PDUs --'     |     |      |      */
#define __ATM_LM_ATM	2	/* loop back ATM cells ---'     |      |      */
/* RESERVED		4	loop back on PHY side  ---'		      */
#define __ATM_LM_PHY	8	/* loop back bits (digital) ----'      |      */
#define __ATM_LM_ANALOG 16	/* loop back the analog signal --------'      */

/* Direction of loopback */
#define __ATM_LM_MKLOC(n)	((n))	    /* Local (i.e. loop TX to RX) */
#define __ATM_LM_MKRMT(n)	((n) << 8)  /* Remote (i.e. loop RX to TX) */

#define __ATM_LM_XTLOC(n)	((n) & 0xff)
#define __ATM_LM_XTRMT(n)	(((n) >> 8) & 0xff)

#define ATM_LM_NONE	0	/* no loopback */

#define ATM_LM_LOC_AAL	__ATM_LM_MKLOC(__ATM_LM_AAL)
#define ATM_LM_LOC_ATM	__ATM_LM_MKLOC(__ATM_LM_ATM)
#define ATM_LM_LOC_PHY	__ATM_LM_MKLOC(__ATM_LM_PHY)
#define ATM_LM_LOC_ANALOG __ATM_LM_MKLOC(__ATM_LM_ANALOG)

#define ATM_LM_RMT_AAL	__ATM_LM_MKRMT(__ATM_LM_AAL)
#define ATM_LM_RMT_ATM	__ATM_LM_MKRMT(__ATM_LM_ATM)
#define ATM_LM_RMT_PHY	__ATM_LM_MKRMT(__ATM_LM_PHY)
#define ATM_LM_RMT_ANALOG __ATM_LM_MKRMT(__ATM_LM_ANALOG)

/*
 * Note: ATM_LM_LOC_* and ATM_LM_RMT_* can be combined, provided that
 * __ATM_LM_XTLOC(x) <= __ATM_LM_XTRMT(x)
 */


struct atm_iobuf {
	int length;
	void __user *buffer;
};

/* for ATM_GETCIRANGE / ATM_SETCIRANGE */

#define ATM_CI_MAX      -1              /* use maximum range of VPI/VCI */
 
struct atm_cirange {
	signed char	vpi_bits;	/* 1..8, ATM_CI_MAX (-1) for maximum */
	signed char	vci_bits;	/* 1..16, ATM_CI_MAX (-1) for maximum */
};

/* for ATM_SETSC; actually taken from the ATM_VF number space */

#define ATM_SC_RX	1024		/* enable RX single-copy */
#define ATM_SC_TX	2048		/* enable TX single-copy */

#define ATM_BACKLOG_DEFAULT 32 /* if we get more, we're likely to time out
				  anyway */

/* MF: change_qos (Modify) flags */

#define ATM_MF_IMMED	 1	/* Block until change is effective */
#define ATM_MF_INC_RSV	 2	/* Change reservation on increase */
#define ATM_MF_INC_SHP	 4	/* Change shaping on increase */
#define ATM_MF_DEC_RSV	 8	/* Change reservation on decrease */
#define ATM_MF_DEC_SHP	16	/* Change shaping on decrease */
#define ATM_MF_BWD	32	/* Set the backward direction parameters */

#define ATM_MF_SET	(ATM_MF_INC_RSV | ATM_MF_INC_SHP | ATM_MF_DEC_RSV | \
			  ATM_MF_DEC_SHP | ATM_MF_BWD)

/*
 * ATM_VS_* are used to express VC state in a human-friendly way.
 */

#define ATM_VS_IDLE	0	/* VC is not used */
#define ATM_VS_CONNECTED 1	/* VC is connected */
#define ATM_VS_CLOSING	2	/* VC is closing */
#define ATM_VS_LISTEN	3	/* VC is listening for incoming setups */
#define ATM_VS_INUSE	4	/* VC is in use (registered with atmsigd) */
#define ATM_VS_BOUND	5	/* VC is bound */

#define ATM_VS2TXT_MAP \
    "IDLE", "CONNECTED", "CLOSING", "LISTEN", "INUSE", "BOUND"

#define ATM_VF2TXT_MAP \
    "ADDR",	"READY",	"PARTIAL",	"REGIS", \
    "RELEASED", "HASQOS",	"LISTEN",	"META", \
    "256",	"512",		"1024",		"2048", \
    "SESSION",	"HASSAP",	"BOUND",	"CLOSE"


#ifdef __KERNEL__

#include <linux/device.h>
#include <linux/wait.h> /* wait_queue_head_t */
#include <linux/time.h> /* struct timeval */
#include <linux/net.h>
#include <linux/skbuff.h> /* struct sk_buff */
#include <linux/uio.h>
#include <net/sock.h>
#include <asm/atomic.h>

#ifdef CONFIG_PROC_FS
#include <linux/proc_fs.h>

extern struct proc_dir_entry *atm_proc_root;
#endif

#ifdef CONFIG_COMPAT
#include <linux/compat.h>
struct compat_atm_iobuf {
	int length;
	compat_uptr_t buffer;
};
#endif

struct k_atm_aal_stats {
#define __HANDLE_ITEM(i) atomic_t i
	__AAL_STAT_ITEMS
#undef __HANDLE_ITEM
};


struct k_atm_dev_stats {
	struct k_atm_aal_stats aal0;
	struct k_atm_aal_stats aal34;
	struct k_atm_aal_stats aal5;
};


enum {
	ATM_VF_ADDR,		/* Address is in use. Set by anybody, cleared
				   by device driver. */
	ATM_VF_READY,		/* VC is ready to transfer data. Set by device
				   driver, cleared by anybody. */
	ATM_VF_PARTIAL,		/* resources are bound to PVC (partial PVC
				   setup), controlled by socket layer */
	ATM_VF_REGIS,		/* registered with demon, controlled by SVC
				   socket layer */
	ATM_VF_BOUND,		/* local SAP is set, controlled by SVC socket
				   layer */
	ATM_VF_RELEASED,	/* demon has indicated/requested release,
				   controlled by SVC socket layer */
	ATM_VF_HASQOS,		/* QOS parameters have been set */
	ATM_VF_LISTEN,		/* socket is used for listening */
	ATM_VF_META,		/* SVC socket isn't used for normal data
				   traffic and doesn't depend on signaling
				   to be available */
	ATM_VF_SESSION,		/* VCC is p2mp session control descriptor */
	ATM_VF_HASSAP,		/* SAP has been set */
	ATM_VF_CLOSE,		/* asynchronous close - treat like VF_RELEASED*/
	ATM_VF_WAITING,		/* waiting for reply from sigd */
	ATM_VF_IS_CLIP,		/* in use by CLIP protocol */
};


#define ATM_VF2VS(flags) \
    (test_bit(ATM_VF_READY,&(flags)) ? ATM_VS_CONNECTED : \
     test_bit(ATM_VF_RELEASED,&(flags)) ? ATM_VS_CLOSING : \
     test_bit(ATM_VF_LISTEN,&(flags)) ? ATM_VS_LISTEN : \
     test_bit(ATM_VF_REGIS,&(flags)) ? ATM_VS_INUSE : \
     test_bit(ATM_VF_BOUND,&(flags)) ? ATM_VS_BOUND : ATM_VS_IDLE)


enum {
	ATM_DF_REMOVED,		/* device was removed from atm_devs list */
};


#define ATM_PHY_SIG_LOST    0	/* no carrier/light */
#define ATM_PHY_SIG_UNKNOWN 1	/* carrier/light status is unknown */
#define ATM_PHY_SIG_FOUND   2	/* carrier/light okay */

#define ATM_ATMOPT_CLP	1	/* set CLP bit */

struct atm_vcc {
	/* struct sock has to be the first member of atm_vcc */
	struct sock	sk;
	unsigned long	flags;		/* VCC flags (ATM_VF_*) */
	short		vpi;		/* VPI and VCI (types must be equal */
					/* with sockaddr) */
	int 		vci;
	unsigned long	aal_options;	/* AAL layer options */
	unsigned long	atm_options;	/* ATM layer options */
	struct atm_dev	*dev;		/* device back pointer */
	struct atm_qos	qos;		/* QOS */
	struct atm_sap	sap;		/* SAP */
	void (*push)(struct atm_vcc *vcc,struct sk_buff *skb);
	void (*pop)(struct atm_vcc *vcc,struct sk_buff *skb); /* optional */
	int (*push_oam)(struct atm_vcc *vcc,void *cell);
	int (*send)(struct atm_vcc *vcc,struct sk_buff *skb);
	void		*dev_data;	/* per-device data */
	void		*proto_data;	/* per-protocol data */
	struct k_atm_aal_stats *stats;	/* pointer to AAL stats group */
	/* SVC part --- may move later ------------------------------------- */
	short		itf;		/* interface number */
	struct sockaddr_atmsvc local;
	struct sockaddr_atmsvc remote;
	/* Multipoint part ------------------------------------------------- */
	struct atm_vcc	*session;	/* session VCC descriptor */
	/* Other stuff ----------------------------------------------------- */
	void		*user_back;	/* user backlink - not touched by */
					/* native ATM stack. Currently used */
					/* by CLIP and sch_atm. */
};

static inline struct atm_vcc *atm_sk(struct sock *sk)
{
	return (struct atm_vcc *)sk;
}

static inline struct atm_vcc *ATM_SD(struct socket *sock)
{
	return atm_sk(sock->sk);
}

static inline struct sock *sk_atm(struct atm_vcc *vcc)
{
	return (struct sock *)vcc;
}

struct atm_dev_addr {
	struct sockaddr_atmsvc addr;	/* ATM address */
	struct list_head entry;		/* next address */
};

enum atm_addr_type_t { ATM_ADDR_LOCAL, ATM_ADDR_LECS };

struct atm_dev {
	const struct atmdev_ops *ops;	/* device operations; NULL if unused */
	const struct atmphy_ops *phy;	/* PHY operations, may be undefined */
					/* (NULL) */
	const char	*type;		/* device type name */
	int		number;		/* device index */
	void		*dev_data;	/* per-device data */
	void		*phy_data;	/* private PHY date */
	unsigned long	flags;		/* device flags (ATM_DF_*) */
	struct list_head local;		/* local ATM addresses */
	struct list_head lecs;		/* LECS ATM addresses learned via ILMI */
	unsigned char	esi[ESI_LEN];	/* ESI ("MAC" addr) */
	struct atm_cirange ci_range;	/* VPI/VCI range */
	struct k_atm_dev_stats stats;	/* statistics */
	char		signal;		/* signal status (ATM_PHY_SIG_*) */
	int		link_rate;	/* link rate (default: OC3) */
	atomic_t	refcnt;		/* reference count */
	spinlock_t	lock;		/* protect internal members */
#ifdef CONFIG_PROC_FS
	struct proc_dir_entry *proc_entry; /* proc entry */
	char *proc_name;		/* proc entry name */
#endif
	struct device class_dev;	/* sysfs device */
	struct list_head dev_list;	/* linkage */
};

 
/* OF: send_Oam Flags */

#define ATM_OF_IMMED  1		/* Attempt immediate delivery */
#define ATM_OF_INRATE 2		/* Attempt in-rate delivery */


/*
 * ioctl, getsockopt, and setsockopt are optional and can be set to NULL.
 */

struct atmdev_ops { /* only send is required */
	void (*dev_close)(struct atm_dev *dev);
	int (*open)(struct atm_vcc *vcc);
	void (*close)(struct atm_vcc *vcc);
	int (*ioctl)(struct atm_dev *dev,unsigned int cmd,void __user *arg);
#ifdef CONFIG_COMPAT
	int (*compat_ioctl)(struct atm_dev *dev,unsigned int cmd,
			    void __user *arg);
#endif
	int (*getsockopt)(struct atm_vcc *vcc,int level,int optname,
	    void __user *optval,int optlen);
	int (*setsockopt)(struct atm_vcc *vcc,int level,int optname,
	    void __user *optval,unsigned int optlen);
	int (*send)(struct atm_vcc *vcc,struct sk_buff *skb);
	int (*send_oam)(struct atm_vcc *vcc,void *cell,int flags);
	void (*phy_put)(struct atm_dev *dev,unsigned char value,
	    unsigned long addr);
	unsigned char (*phy_get)(struct atm_dev *dev,unsigned long addr);
	int (*change_qos)(struct atm_vcc *vcc,struct atm_qos *qos,int flags);
	int (*proc_read)(struct atm_dev *dev,loff_t *pos,char *page);
	struct module *owner;
};

struct atmphy_ops {
	int (*start)(struct atm_dev *dev);
	int (*ioctl)(struct atm_dev *dev,unsigned int cmd,void __user *arg);
	void (*interrupt)(struct atm_dev *dev);
	int (*stop)(struct atm_dev *dev);
};

struct atm_skb_data {
	struct atm_vcc	*vcc;		/* ATM VCC */
	unsigned long	atm_options;	/* ATM layer options */
};

#define VCC_HTABLE_SIZE 32

extern struct hlist_head vcc_hash[VCC_HTABLE_SIZE];
extern rwlock_t vcc_sklist_lock;

#define ATM_SKB(skb) (((struct atm_skb_data *) (skb)->cb))

struct atm_dev *atm_dev_register(const char *type,const struct atmdev_ops *ops,
    int number,unsigned long *flags); /* number == -1: pick first available */
struct atm_dev *atm_dev_lookup(int number);
void atm_dev_deregister(struct atm_dev *dev);

/* atm_dev_signal_change
 *
 * Propagate lower layer signal change in atm_dev->signal to netdevice.
 * The event will be sent via a notifier call chain.
 */
void atm_dev_signal_change(struct atm_dev *dev, char signal);

void vcc_insert_socket(struct sock *sk);


/*
 * This is approximately the algorithm used by alloc_skb.
 *
 */

static inline int atm_guess_pdu2truesize(int size)
{
	return SKB_DATA_ALIGN(size) + sizeof(struct skb_shared_info);
}


static inline void atm_force_charge(struct atm_vcc *vcc,int truesize)
{
	atomic_add(truesize, &sk_atm(vcc)->sk_rmem_alloc);
}


static inline void atm_return(struct atm_vcc *vcc,int truesize)
{
	atomic_sub(truesize, &sk_atm(vcc)->sk_rmem_alloc);
}


static inline int atm_may_send(struct atm_vcc *vcc,unsigned int size)
{
	return (size + atomic_read(&sk_atm(vcc)->sk_wmem_alloc)) <
	       sk_atm(vcc)->sk_sndbuf;
}


static inline void atm_dev_hold(struct atm_dev *dev)
{
	atomic_inc(&dev->refcnt);
}


static inline void atm_dev_put(struct atm_dev *dev)
{
	if (atomic_dec_and_test(&dev->refcnt)) {
		BUG_ON(!test_bit(ATM_DF_REMOVED, &dev->flags));
		if (dev->ops->dev_close)
			dev->ops->dev_close(dev);
		put_device(&dev->class_dev);
	}
}


int atm_charge(struct atm_vcc *vcc,int truesize);
struct sk_buff *atm_alloc_charge(struct atm_vcc *vcc,int pdu_size,
    gfp_t gfp_flags);
int atm_pcr_goal(const struct atm_trafprm *tp);

void vcc_release_async(struct atm_vcc *vcc, int reply);

struct atm_ioctl {
	struct module *owner;
	/* A module reference is kept if appropriate over this call.
	 * Return -ENOIOCTLCMD if you don't handle it. */
	int (*ioctl)(struct socket *, unsigned int cmd, unsigned long arg);
	struct list_head list;
};

/**
 * register_atm_ioctl - register handler for ioctl operations
 *
 * Special (non-device) handlers of ioctl's should
 * register here. If you're a normal device, you should
 * set .ioctl in your atmdev_ops instead.
 */
void register_atm_ioctl(struct atm_ioctl *);

/**
 * deregister_atm_ioctl - remove the ioctl handler
 */
void deregister_atm_ioctl(struct atm_ioctl *);


/* register_atmdevice_notifier - register atm_dev notify events
 *
 * Clients like br2684 will register notify events
 * Currently we notify of signal found/lost
 */
int register_atmdevice_notifier(struct notifier_block *nb);
void unregister_atmdevice_notifier(struct notifier_block *nb);

#endif /* __KERNEL__ */

#endif
Commit	Line	Data
1da177e4 LT	1	/* atmdev.h - ATM device driver declarations and various related items */
	2
	3	/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
	4
	5
	6	#ifndef LINUX_ATMDEV_H
	7	#define LINUX_ATMDEV_H
	8
	9
1da177e4 LT	10	#include <linux/atmapi.h>
	11	#include <linux/atm.h>
	12	#include <linux/atmioc.h>
	13
	14
	15	#define ESI_LEN 6
	16
	17	#define ATM_OC3_PCR (155520000/270*260/8/53)
	18	/* OC3 link rate: 155520000 bps
	19	SONET overhead: /270*260 (9 section, 1 path)
	20	bits per cell: /8/53
	21	max cell rate: 353207.547 cells/sec */
	22	#define ATM_25_PCR ((25600000/8-8000)/54)
	23	/* 25 Mbps ATM cell rate (59111) */
	24	#define ATM_OC12_PCR (622080000/1080*1040/8/53)
	25	/* OC12 link rate: 622080000 bps
	26	SONET overhead: /1080*1040
	27	bits per cell: /8/53
	28	max cell rate: 1412830.188 cells/sec */
	29	#define ATM_DS3_PCR (8000*12)
	30	/* DS3: 12 cells in a 125 usec time slot */
	31
	32
	33	#define __AAL_STAT_ITEMS \
	34	__HANDLE_ITEM(tx); /* TX okay */ \
	35	__HANDLE_ITEM(tx_err); /* TX errors */ \
	36	__HANDLE_ITEM(rx); /* RX okay */ \
	37	__HANDLE_ITEM(rx_err); /* RX errors */ \
	38	__HANDLE_ITEM(rx_drop); /* RX out of memory */
	39
	40	struct atm_aal_stats {
	41	#define __HANDLE_ITEM(i) int i
	42	__AAL_STAT_ITEMS
	43	#undef __HANDLE_ITEM
	44	};
	45
	46
	47	struct atm_dev_stats {
	48	struct atm_aal_stats aal0;
	49	struct atm_aal_stats aal34;
	50	struct atm_aal_stats aal5;
	51	} __ATM_API_ALIGN;
	52
	53
	54	#define ATM_GETLINKRATE _IOW('a',ATMIOC_ITF+1,struct atmif_sioc)
	55	/* get link rate */
	56	#define ATM_GETNAMES _IOW('a',ATMIOC_ITF+3,struct atm_iobuf)
	57	/* get interface names (numbers) */
	58	#define ATM_GETTYPE _IOW('a',ATMIOC_ITF+4,struct atmif_sioc)
	59	/* get interface type name */
	60	#define ATM_GETESI _IOW('a',ATMIOC_ITF+5,struct atmif_sioc)
	61	/* get interface ESI */
	62	#define ATM_GETADDR _IOW('a',ATMIOC_ITF+6,struct atmif_sioc)
	63	/* get itf's local ATM addr. list */
	64	#define ATM_RSTADDR _IOW('a',ATMIOC_ITF+7,struct atmif_sioc)
	65	/* reset itf's ATM address list */
	66	#define ATM_ADDADDR _IOW('a',ATMIOC_ITF+8,struct atmif_sioc)
	67	/* add a local ATM address */
	68	#define ATM_DELADDR _IOW('a',ATMIOC_ITF+9,struct atmif_sioc)
	69	/* remove a local ATM address */
	70	#define ATM_GETCIRANGE _IOW('a',ATMIOC_ITF+10,struct atmif_sioc)
	71	/* get connection identifier range */
	72	#define ATM_SETCIRANGE _IOW('a',ATMIOC_ITF+11,struct atmif_sioc)
	73	/* set connection identifier range */
74	#define ATM_SETESI _IOW('a',ATMIOC_ITF+12,struct atmif_sioc)
75	/* set interface ESI */
76	#define ATM_SETESIF _IOW('a',ATMIOC_ITF+13,struct atmif_sioc)
77	/* force interface ESI */
0f21ba7c EK	78	#define ATM_ADDLECSADDR _IOW('a', ATMIOC_ITF+14, struct atmif_sioc)
	79	/* register a LECS address */
	80	#define ATM_DELLECSADDR _IOW('a', ATMIOC_ITF+15, struct atmif_sioc)
	81	/* unregister a LECS address */
	82	#define ATM_GETLECSADDR _IOW('a', ATMIOC_ITF+16, struct atmif_sioc)
	83	/* retrieve LECS address(es) */
	84
1da177e4 LT	85	#define ATM_GETSTAT _IOW('a',ATMIOC_SARCOM+0,struct atmif_sioc)
	86	/* get AAL layer statistics */
	87	#define ATM_GETSTATZ _IOW('a',ATMIOC_SARCOM+1,struct atmif_sioc)
	88	/* get AAL layer statistics and zero */
	89	#define ATM_GETLOOP _IOW('a',ATMIOC_SARCOM+2,struct atmif_sioc)
	90	/* get loopback mode */
	91	#define ATM_SETLOOP _IOW('a',ATMIOC_SARCOM+3,struct atmif_sioc)
	92	/* set loopback mode */
	93	#define ATM_QUERYLOOP _IOW('a',ATMIOC_SARCOM+4,struct atmif_sioc)
	94	/* query supported loopback modes */
	95	#define ATM_SETSC _IOW('a',ATMIOC_SPECIAL+1,int)
	96	/* enable or disable single-copy */
	97	#define ATM_SETBACKEND _IOW('a',ATMIOC_SPECIAL+2,atm_backend_t)
	98	/* set backend handler */
	99	#define ATM_NEWBACKENDIF _IOW('a',ATMIOC_SPECIAL+3,atm_backend_t)
	100	/* use backend to make new if */
	101	#define ATM_ADDPARTY _IOW('a', ATMIOC_SPECIAL+4,struct atm_iobuf)
	102	/* add party to p2mp call */
8865c418 DW	103	#ifdef CONFIG_COMPAT
	104	/* It actually takes struct sockaddr_atmsvc, not struct atm_iobuf */
	105	#define COMPAT_ATM_ADDPARTY _IOW('a', ATMIOC_SPECIAL+4,struct compat_atm_iobuf)
	106	#endif
1da177e4 LT	107	#define ATM_DROPPARTY _IOW('a', ATMIOC_SPECIAL+5,int)
	108	/* drop party from p2mp call */
	109
	110	/*
	111	* These are backend handkers that can be set via the ATM_SETBACKEND call
	112	* above. In the future we may support dynamic loading of these - for now,
	113	* they're just being used to share the ATMIOC_BACKEND ioctls
	114	*/
	115	#define ATM_BACKEND_RAW 0
	116	#define ATM_BACKEND_PPP 1 /* PPPoATM - RFC2364 */
	117	#define ATM_BACKEND_BR2684 2 /* Bridged RFC1483/2684 */
	118
	119	/* for ATM_GETTYPE */
	120	#define ATM_ITFTYP_LEN 8 /* maximum length of interface type name */
	121
	122	/*
	123	* Loopback modes for ATM_{PHY,SAR}_{GET,SET}LOOP
	124	*/
	125
	126	/* Point of loopback CPU-->SAR-->PHY-->line--> ... */
	127	#define __ATM_LM_NONE 0 /* no loop back ^ ^ ^ ^ */
	128	#define __ATM_LM_AAL 1 /* loop back PDUs --' \| \| \| */
	129	#define __ATM_LM_ATM 2 /* loop back ATM cells ---' \| \| */
	130	/* RESERVED 4 loop back on PHY side ---' */
	131	#define __ATM_LM_PHY 8 /* loop back bits (digital) ----' \| */
	132	#define __ATM_LM_ANALOG 16 /* loop back the analog signal --------' */
	133
	134	/* Direction of loopback */
	135	#define __ATM_LM_MKLOC(n) ((n)) /* Local (i.e. loop TX to RX) */
	136	#define __ATM_LM_MKRMT(n) ((n) << 8) /* Remote (i.e. loop RX to TX) */
	137
	138	#define __ATM_LM_XTLOC(n) ((n) & 0xff)
	139	#define __ATM_LM_XTRMT(n) (((n) >> 8) & 0xff)
	140
	141	#define ATM_LM_NONE 0 /* no loopback */
	142
	143	#define ATM_LM_LOC_AAL __ATM_LM_MKLOC(__ATM_LM_AAL)
	144	#define ATM_LM_LOC_ATM __ATM_LM_MKLOC(__ATM_LM_ATM)
	145	#define ATM_LM_LOC_PHY __ATM_LM_MKLOC(__ATM_LM_PHY)
	146	#define ATM_LM_LOC_ANALOG __ATM_LM_MKLOC(__ATM_LM_ANALOG)
	147
	148	#define ATM_LM_RMT_AAL __ATM_LM_MKRMT(__ATM_LM_AAL)
	149	#define ATM_LM_RMT_ATM __ATM_LM_MKRMT(__ATM_LM_ATM)
	150	#define ATM_LM_RMT_PHY __ATM_LM_MKRMT(__ATM_LM_PHY)
	151	#define ATM_LM_RMT_ANALOG __ATM_LM_MKRMT(__ATM_LM_ANALOG)
	152
	153	/*
	154	* Note: ATM_LM_LOC_* and ATM_LM_RMT_* can be combined, provided that
	155	* __ATM_LM_XTLOC(x) <= __ATM_LM_XTRMT(x)
	156	*/
	157
	158
	159	struct atm_iobuf {
	160	int length;
	161	void __user *buffer;
	162	};
	163
	164	/* for ATM_GETCIRANGE / ATM_SETCIRANGE */
	165
	166	#define ATM_CI_MAX -1 /* use maximum range of VPI/VCI */
	167
	168	struct atm_cirange {
	169	signed char vpi_bits; /* 1..8, ATM_CI_MAX (-1) for maximum */
	170	signed char vci_bits; /* 1..16, ATM_CI_MAX (-1) for maximum */
171	};
172
173	/* for ATM_SETSC; actually taken from the ATM_VF number space */
174
175	#define ATM_SC_RX 1024 /* enable RX single-copy */
176	#define ATM_SC_TX 2048 /* enable TX single-copy */
177
178	#define ATM_BACKLOG_DEFAULT 32 /* if we get more, we're likely to time out
179	anyway */
180
181	/* MF: change_qos (Modify) flags */
182
183	#define ATM_MF_IMMED 1 /* Block until change is effective */
184	#define ATM_MF_INC_RSV 2 /* Change reservation on increase */
185	#define ATM_MF_INC_SHP 4 /* Change shaping on increase */
186	#define ATM_MF_DEC_RSV 8 /* Change reservation on decrease */
187	#define ATM_MF_DEC_SHP 16 /* Change shaping on decrease */
188	#define ATM_MF_BWD 32 /* Set the backward direction parameters */
189
190	#define ATM_MF_SET (ATM_MF_INC_RSV \| ATM_MF_INC_SHP \| ATM_MF_DEC_RSV \| \
191	ATM_MF_DEC_SHP \| ATM_MF_BWD)
192
193	/*
194	* ATM_VS_* are used to express VC state in a human-friendly way.
195	*/
196
197	#define ATM_VS_IDLE 0 /* VC is not used */
198	#define ATM_VS_CONNECTED 1 /* VC is connected */
199	#define ATM_VS_CLOSING 2 /* VC is closing */
200	#define ATM_VS_LISTEN 3 /* VC is listening for incoming setups */
201	#define ATM_VS_INUSE 4 /* VC is in use (registered with atmsigd) */
202	#define ATM_VS_BOUND 5 /* VC is bound */
203
204	#define ATM_VS2TXT_MAP \
205	"IDLE", "CONNECTED", "CLOSING", "LISTEN", "INUSE", "BOUND"
206
207	#define ATM_VF2TXT_MAP \
208	"ADDR", "READY", "PARTIAL", "REGIS", \
209	"RELEASED", "HASQOS", "LISTEN", "META", \
210	"256", "512", "1024", "2048", \
211	"SESSION", "HASSAP", "BOUND", "CLOSE"
212
213
214	#ifdef __KERNEL__
215
bb98ad77	216	#include <linux/device.h>
1da177e4 LT	217	#include <linux/wait.h> /* wait_queue_head_t */
	218	#include <linux/time.h> /* struct timeval */
	219	#include <linux/net.h>
	220	#include <linux/skbuff.h> /* struct sk_buff */
	221	#include <linux/uio.h>
	222	#include <net/sock.h>
	223	#include <asm/atomic.h>
	224
	225	#ifdef CONFIG_PROC_FS
	226	#include <linux/proc_fs.h>
	227
	228	extern struct proc_dir_entry *atm_proc_root;
	229	#endif
	230
8865c418 DW	231	#ifdef CONFIG_COMPAT
	232	#include <linux/compat.h>
	233	struct compat_atm_iobuf {
	234	int length;
	235	compat_uptr_t buffer;
	236	};
	237	#endif
1da177e4 LT	238
	239	struct k_atm_aal_stats {
	240	#define __HANDLE_ITEM(i) atomic_t i
	241	__AAL_STAT_ITEMS
	242	#undef __HANDLE_ITEM
	243	};
	244
	245
	246	struct k_atm_dev_stats {
	247	struct k_atm_aal_stats aal0;
	248	struct k_atm_aal_stats aal34;
	249	struct k_atm_aal_stats aal5;
	250	};
	251
	252
	253	enum {
	254	ATM_VF_ADDR, /* Address is in use. Set by anybody, cleared
	255	by device driver. */
	256	ATM_VF_READY, /* VC is ready to transfer data. Set by device
	257	driver, cleared by anybody. */
	258	ATM_VF_PARTIAL, /* resources are bound to PVC (partial PVC
	259	setup), controlled by socket layer */
	260	ATM_VF_REGIS, /* registered with demon, controlled by SVC
	261	socket layer */
	262	ATM_VF_BOUND, /* local SAP is set, controlled by SVC socket
	263	layer */
	264	ATM_VF_RELEASED, /* demon has indicated/requested release,
	265	controlled by SVC socket layer */
	266	ATM_VF_HASQOS, /* QOS parameters have been set */
	267	ATM_VF_LISTEN, /* socket is used for listening */
	268	ATM_VF_META, /* SVC socket isn't used for normal data
	269	traffic and doesn't depend on signaling
	270	to be available */
	271	ATM_VF_SESSION, /* VCC is p2mp session control descriptor */
	272	ATM_VF_HASSAP, /* SAP has been set */
	273	ATM_VF_CLOSE, /* asynchronous close - treat like VF_RELEASED*/
	274	ATM_VF_WAITING, /* waiting for reply from sigd */
	275	ATM_VF_IS_CLIP, /* in use by CLIP protocol */
	276	};
	277
	278
	279	#define ATM_VF2VS(flags) \
	280	(test_bit(ATM_VF_READY,&(flags)) ? ATM_VS_CONNECTED : \
	281	test_bit(ATM_VF_RELEASED,&(flags)) ? ATM_VS_CLOSING : \
	282	test_bit(ATM_VF_LISTEN,&(flags)) ? ATM_VS_LISTEN : \
	283	test_bit(ATM_VF_REGIS,&(flags)) ? ATM_VS_INUSE : \
	284	test_bit(ATM_VF_BOUND,&(flags)) ? ATM_VS_BOUND : ATM_VS_IDLE)
	285
	286
	287	enum {
64bf69dd	288	ATM_DF_REMOVED, /* device was removed from atm_devs list */
1da177e4 LT	289	};
	290
	291
	292	#define ATM_PHY_SIG_LOST 0 /* no carrier/light */
	293	#define ATM_PHY_SIG_UNKNOWN 1 /* carrier/light status is unknown */
	294	#define ATM_PHY_SIG_FOUND 2 /* carrier/light okay */
	295
	296	#define ATM_ATMOPT_CLP 1 /* set CLP bit */
	297
	298	struct atm_vcc {
	299	/* struct sock has to be the first member of atm_vcc */
	300	struct sock sk;
	301	unsigned long flags; /* VCC flags (ATM_VF_) /
	302	short vpi; /* VPI and VCI (types must be equal */
	303	/* with sockaddr) */
	304	int vci;
	305	unsigned long aal_options; /* AAL layer options */
	306	unsigned long atm_options; /* ATM layer options */
	307	struct atm_dev dev; / device back pointer */
	308	struct atm_qos qos; /* QOS */
	309	struct atm_sap sap; /* SAP */
	310	void (push)(struct atm_vcc vcc,struct sk_buff *skb);
	311	void (pop)(struct atm_vcc vcc,struct sk_buff skb); / optional */
	312	int (push_oam)(struct atm_vcc vcc,void *cell);
	313	int (send)(struct atm_vcc vcc,struct sk_buff *skb);
	314	void dev_data; / per-device data */
	315	void proto_data; / per-protocol data */
	316	struct k_atm_aal_stats stats; / pointer to AAL stats group */
	317	/* SVC part --- may move later ------------------------------------- */
	318	short itf; /* interface number */
	319	struct sockaddr_atmsvc local;
	320	struct sockaddr_atmsvc remote;
	321	/* Multipoint part ------------------------------------------------- */
	322	struct atm_vcc session; / session VCC descriptor */
	323	/* Other stuff ----------------------------------------------------- */
	324	void user_back; / user backlink - not touched by */
	325	/* native ATM stack. Currently used */
	326	/* by CLIP and sch_atm. */
	327	};
	328
	329	static inline struct atm_vcc atm_sk(struct sock sk)
	330	{
	331	return (struct atm_vcc *)sk;
	332	}
	333
	334	static inline struct atm_vcc ATM_SD(struct socket sock)
	335	{
	336	return atm_sk(sock->sk);
	337	}
	338
	339	static inline struct sock sk_atm(struct atm_vcc vcc)
	340	{
	341	return (struct sock *)vcc;
	342	}
	343
	344	struct atm_dev_addr {
	345	struct sockaddr_atmsvc addr; /* ATM address */
	346	struct list_head entry; /* next address */
	347	};
	348
0f21ba7c EK	349	enum atm_addr_type_t { ATM_ADDR_LOCAL, ATM_ADDR_LECS };
0f21ba7c EK	350
1da177e4 LT	351	struct atm_dev {
	352	const struct atmdev_ops ops; / device operations; NULL if unused */
	353	const struct atmphy_ops phy; / PHY operations, may be undefined */
	354	/* (NULL) */
	355	const char type; / device type name */
	356	int number; /* device index */
	357	void dev_data; / per-device data */
	358	void phy_data; / private PHY date */
	359	unsigned long flags; /* device flags (ATM_DF_) /
	360	struct list_head local; /* local ATM addresses */
0f21ba7c	361	struct list_head lecs; /* LECS ATM addresses learned via ILMI */
1da177e4 LT	362	unsigned char esi[ESI_LEN]; /* ESI ("MAC" addr) */
	363	struct atm_cirange ci_range; /* VPI/VCI range */
	364	struct k_atm_dev_stats stats; /* statistics */
	365	char signal; /* signal status (ATM_PHY_SIG_) /
	366	int link_rate; /* link rate (default: OC3) */
	367	atomic_t refcnt; /* reference count */
	368	spinlock_t lock; /* protect internal members */
	369	#ifdef CONFIG_PROC_FS
	370	struct proc_dir_entry proc_entry; / proc entry */
	371	char proc_name; / proc entry name */
	372	#endif
ef39592f	373	struct device class_dev; /* sysfs device */
1da177e4 LT	374	struct list_head dev_list; /* linkage */
	375	};
	376
	377
	378	/* OF: send_Oam Flags */
	379
	380	#define ATM_OF_IMMED 1 /* Attempt immediate delivery */
	381	#define ATM_OF_INRATE 2 /* Attempt in-rate delivery */
	382
	383
	384	/*
	385	* ioctl, getsockopt, and setsockopt are optional and can be set to NULL.
	386	*/
	387
	388	struct atmdev_ops { /* only send is required */
	389	void (dev_close)(struct atm_dev dev);
	390	int (open)(struct atm_vcc vcc);
	391	void (close)(struct atm_vcc vcc);
	392	int (ioctl)(struct atm_dev dev,unsigned int cmd,void __user *arg);
8865c418 DW	393	#ifdef CONFIG_COMPAT
	394	int (compat_ioctl)(struct atm_dev dev,unsigned int cmd,
	395	void __user *arg);
	396	#endif
1da177e4 LT	397	int (getsockopt)(struct atm_vcc vcc,int level,int optname,
	398	void __user *optval,int optlen);
	399	int (setsockopt)(struct atm_vcc vcc,int level,int optname,
b7058842	400	void __user *optval,unsigned int optlen);
1da177e4 LT	401	int (send)(struct atm_vcc vcc,struct sk_buff *skb);
	402	int (send_oam)(struct atm_vcc vcc,void *cell,int flags);
	403	void (phy_put)(struct atm_dev dev,unsigned char value,
	404	unsigned long addr);
	405	unsigned char (phy_get)(struct atm_dev dev,unsigned long addr);
	406	int (change_qos)(struct atm_vcc vcc,struct atm_qos *qos,int flags);
	407	int (proc_read)(struct atm_dev dev,loff_t pos,char page);
	408	struct module *owner;
	409	};
	410
	411	struct atmphy_ops {
	412	int (start)(struct atm_dev dev);
	413	int (ioctl)(struct atm_dev dev,unsigned int cmd,void __user *arg);
	414	void (interrupt)(struct atm_dev dev);
	415	int (stop)(struct atm_dev dev);
	416	};
	417
	418	struct atm_skb_data {
	419	struct atm_vcc vcc; / ATM VCC */
	420	unsigned long atm_options; /* ATM layer options */
	421	};
	422
	423	#define VCC_HTABLE_SIZE 32
	424
	425	extern struct hlist_head vcc_hash[VCC_HTABLE_SIZE];
	426	extern rwlock_t vcc_sklist_lock;
	427
	428	#define ATM_SKB(skb) (((struct atm_skb_data *) (skb)->cb))
	429
	430	struct atm_dev atm_dev_register(const char type,const struct atmdev_ops *ops,
	431	int number,unsigned long flags); / number == -1: pick first available */
	432	struct atm_dev *atm_dev_lookup(int number);
	433	void atm_dev_deregister(struct atm_dev *dev);
7313bb8f KH	434
	435	/* atm_dev_signal_change
	436	*
	437	* Propagate lower layer signal change in atm_dev->signal to netdevice.
	438	* The event will be sent via a notifier call chain.
	439	*/
	440	void atm_dev_signal_change(struct atm_dev *dev, char signal);
	441
1da177e4 LT	442	void vcc_insert_socket(struct sock *sk);
	443
	444
	445	/*
	446	* This is approximately the algorithm used by alloc_skb.
	447	*
	448	*/
	449
	450	static inline int atm_guess_pdu2truesize(int size)
	451	{
a02cec21	452	return SKB_DATA_ALIGN(size) + sizeof(struct skb_shared_info);
1da177e4 LT	453	}
	454
	455
	456	static inline void atm_force_charge(struct atm_vcc *vcc,int truesize)
	457	{
	458	atomic_add(truesize, &sk_atm(vcc)->sk_rmem_alloc);
	459	}
	460
	461
	462	static inline void atm_return(struct atm_vcc *vcc,int truesize)
	463	{
	464	atomic_sub(truesize, &sk_atm(vcc)->sk_rmem_alloc);
	465	}
	466
	467
	468	static inline int atm_may_send(struct atm_vcc *vcc,unsigned int size)
	469	{
	470	return (size + atomic_read(&sk_atm(vcc)->sk_wmem_alloc)) <
	471	sk_atm(vcc)->sk_sndbuf;
	472	}
	473
	474
	475	static inline void atm_dev_hold(struct atm_dev *dev)
	476	{
	477	atomic_inc(&dev->refcnt);
	478	}
	479
	480
	481	static inline void atm_dev_put(struct atm_dev *dev)
	482	{
64bf69dd SG	483	if (atomic_dec_and_test(&dev->refcnt)) {
	484	BUG_ON(!test_bit(ATM_DF_REMOVED, &dev->flags));
	485	if (dev->ops->dev_close)
	486	dev->ops->dev_close(dev);
ef39592f	487	put_device(&dev->class_dev);
64bf69dd	488	}
1da177e4 LT	489	}
	490
	491
	492	int atm_charge(struct atm_vcc *vcc,int truesize);
	493	struct sk_buff atm_alloc_charge(struct atm_vcc vcc,int pdu_size,
dd0fc66f	494	gfp_t gfp_flags);
c219750b	495	int atm_pcr_goal(const struct atm_trafprm *tp);
1da177e4 LT	496
	497	void vcc_release_async(struct atm_vcc *vcc, int reply);
	498
	499	struct atm_ioctl {
	500	struct module *owner;
	501	/* A module reference is kept if appropriate over this call.
	502	* Return -ENOIOCTLCMD if you don't handle it. */
	503	int (ioctl)(struct socket , unsigned int cmd, unsigned long arg);
	504	struct list_head list;
	505	};
	506
	507	/**
	508	* register_atm_ioctl - register handler for ioctl operations
	509	*
	510	* Special (non-device) handlers of ioctl's should
	511	* register here. If you're a normal device, you should
	512	* set .ioctl in your atmdev_ops instead.
	513	*/
	514	void register_atm_ioctl(struct atm_ioctl *);
	515
	516	/**
	517	* deregister_atm_ioctl - remove the ioctl handler
	518	*/
	519	void deregister_atm_ioctl(struct atm_ioctl *);
	520
7313bb8f KH	521
	522	/* register_atmdevice_notifier - register atm_dev notify events
	523	*
	524	* Clients like br2684 will register notify events
	525	* Currently we notify of signal found/lost
	526	*/
	527	int register_atmdevice_notifier(struct notifier_block *nb);
	528	void unregister_atmdevice_notifier(struct notifier_block *nb);
	529
1da177e4 LT	530	#endif /* __KERNEL__ */
	531
	532	#endif