/* 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 */#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  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 class_device class_dev;	/* sysfs class 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);	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,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);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);		class_device_put(&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 *); #endif /* __KERNEL__ */ #endif