linux-imx/include/linux/atmdev.h at master · maxem-io/linux-imx · GitHub

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/* atmdev.h - ATM device driver declarations and various related items */

#ifndef LINUX_ATMDEV_H

#define LINUX_ATMDEV_H

#include <linux/wait.h> /* wait_queue_head_t */

#include <linux/time.h> /* struct timeval */

#include <linux/net.h>

#include <linux/bug.h>

#include <linux/skbuff.h> /* struct sk_buff */

#include <linux/uio.h>

#include <net/sock.h>

#include <linux/atomic.h>

#include <uapi/linux/atmdev.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;

};

struct device;

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 (*release_cb)(struct atm_vcc *vcc); /* release_sock callback */

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 */

struct module *owner; /* owner of ->push function */

/* 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, struct device *parent,

const struct atmdev_ops *ops,

int number, /* -1 == pick first available */

unsigned long *flags);

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);

void atm_dev_release_vccs(struct atm_dev *dev);

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

linux-imx/include/linux/atmdev.h at master · maxem-io/linux-imx · GitHub

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