Release 4.12 include/net/iucv/af_iucv.h

/*
 * Copyright 2006 IBM Corporation
 * IUCV protocol stack for Linux on zSeries
 * Version 1.0
 * Author(s): Jennifer Hunt <jenhunt@us.ibm.com>
 *
 */

#ifndef __AFIUCV_H

#define __AFIUCV_H

#include <asm/types.h>
#include <asm/byteorder.h>
#include <linux/list.h>
#include <linux/poll.h>
#include <linux/socket.h>
#include <net/iucv/iucv.h>

#ifndef AF_IUCV

#define AF_IUCV		32

#define PF_IUCV		AF_IUCV
#endif

/* Connection and socket states */
enum {
	
IUCV_CONNECTED = 1,
	
IUCV_OPEN,
	
IUCV_BOUND,
	
IUCV_LISTEN,
	
IUCV_DISCONN,
	
IUCV_CLOSING,
	
IUCV_CLOSED
};


#define IUCV_QUEUELEN_DEFAULT	65535

#define IUCV_HIPER_MSGLIM_DEFAULT	128

#define IUCV_CONN_TIMEOUT	(HZ * 40)

#define IUCV_DISCONN_TIMEOUT	(HZ * 2)

#define IUCV_CONN_IDLE_TIMEOUT	(HZ * 60)

#define IUCV_BUFSIZE_DEFAULT	32768

/* IUCV socket address */

struct sockaddr_iucv {
	
sa_family_t	siucv_family;
	
unsigned short	siucv_port;		/* Reserved */
	
unsigned int	siucv_addr;		/* Reserved */
	
char		siucv_nodeid[8];	/* Reserved */
	
char		siucv_user_id[8];	/* Guest User Id */
	
char		siucv_name[8];		/* Application Name */
};


/* Common socket structures and functions */

struct sock_msg_q {
	
struct iucv_path	*path;
	
struct iucv_message	msg;
	
struct list_head	list;
	
spinlock_t		lock;
};


#define AF_IUCV_FLAG_ACK 0x1

#define AF_IUCV_FLAG_SYN 0x2

#define AF_IUCV_FLAG_FIN 0x4

#define AF_IUCV_FLAG_WIN 0x8

#define AF_IUCV_FLAG_SHT 0x10


struct af_iucv_trans_hdr {
	
u16 magic;
	
u8 version;
	
u8 flags;
	
u16 window;
	
char destNodeID[8];
	
char destUserID[8];
	
char destAppName[16];
	
char srcNodeID[8];
	
char srcUserID[8];
	
char srcAppName[16];             /* => 70 bytes */
	
struct iucv_message iucv_hdr;    /* => 33 bytes */
	
u8 pad;                          /* total 104 bytes */

} __packed;


enum iucv_tx_notify {
	/* transmission of skb is completed and was successful */
	
TX_NOTIFY_OK = 0,
	/* target is unreachable */
	
TX_NOTIFY_UNREACHABLE = 1,
	/* transfer pending queue full */
	
TX_NOTIFY_TPQFULL = 2,
	/* general error */
	
TX_NOTIFY_GENERALERROR = 3,
	/* transmission of skb is pending - may interleave
         * with TX_NOTIFY_DELAYED_* */
	
TX_NOTIFY_PENDING = 4,
	/* transmission of skb was done successfully (delayed) */
	
TX_NOTIFY_DELAYED_OK = 5,
	/* target unreachable (detected delayed) */
	
TX_NOTIFY_DELAYED_UNREACHABLE = 6,
	/* general error (detected delayed) */
	
TX_NOTIFY_DELAYED_GENERALERROR = 7,
};


#define iucv_sk(__sk) ((struct iucv_sock *) __sk)


#define AF_IUCV_TRANS_IUCV 0

#define AF_IUCV_TRANS_HIPER 1


struct iucv_sock {
	
struct sock		sk;
	
char			src_user_id[8];
	
char			src_name[8];
	
char			dst_user_id[8];
	
char			dst_name[8];
	
struct list_head	accept_q;
	
spinlock_t		accept_q_lock;
	
struct sock		*parent;
	
struct iucv_path	*path;
	
struct net_device	*hs_dev;
	
struct sk_buff_head	send_skb_q;
	
struct sk_buff_head	backlog_skb_q;
	
struct sock_msg_q	message_q;
	
unsigned int		send_tag;
	
u8			flags;
	
u16			msglimit;
	
u16			msglimit_peer;
	
atomic_t		msg_sent;
	
atomic_t		msg_recv;
	
atomic_t		pendings;
	
int			transport;
	
void                    (*sk_txnotify)(struct sk_buff *skb,
					       enum iucv_tx_notify n);
};


struct iucv_skb_cb {
	
u32	class;		/* target class of message */
	
u32	tag;		/* tag associated with message */
	
u32	offset;		/* offset for skb receival */
};


#define IUCV_SKB_CB(__skb)	((struct iucv_skb_cb *)&((__skb)->cb[0]))

/* iucv socket options (SOL_IUCV) */

#define SO_IPRMDATA_MSG	0x0080		
/* send/recv IPRM_DATA msgs */

#define SO_MSGLIMIT	0x1000		
/* get/set IUCV MSGLIMIT */

#define SO_MSGSIZE	0x0800		
/* get maximum msgsize */

/* iucv related control messages (scm) */

#define SCM_IUCV_TRGCLS	0x0001		
/* target class control message */


struct iucv_sock_list {
	
struct hlist_head head;
	
rwlock_t	  lock;
	
atomic_t	  autobind_name;
};

unsigned int iucv_sock_poll(struct file *file, struct socket *sock,
			    poll_table *wait);
void iucv_sock_link(struct iucv_sock_list *l, struct sock *s);
void iucv_sock_unlink(struct iucv_sock_list *l, struct sock *s);
void iucv_accept_enqueue(struct sock *parent, struct sock *sk);
void iucv_accept_unlink(struct sock *sk);
struct sock *iucv_accept_dequeue(struct sock *parent, struct socket *newsock);

#endif /* __IUCV_H */
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Jennifer Hunt
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2
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208
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Ursula Braun-Krahl
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Directory: include/net/iucv

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