root/include/net/iucv/af_iucv.h

INCLUDED FROM

/*
 * 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>

#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_SEVERED,
        IUCV_DISCONN,
        IUCV_CLOSING,
        IUCV_CLOSED
};

#define IUCV_QUEUELEN_DEFAULT   65535
#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 iucv_sk(__sk) ((struct iucv_sock *) __sk)

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 sk_buff_head     send_skb_q;
        struct sk_buff_head     backlog_skb_q;
        struct sock_msg_q       message_q;
        unsigned int            send_tag;
};

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);
int  iucv_sock_wait_state(struct sock *sk, int state, int state2,
                          unsigned long timeo);
int  iucv_sock_wait_cnt(struct sock *sk, unsigned long timeo);
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 */