include/net/iucv/af_iucv.h

   1 /*
   2  * Copyright 2006 IBM Corporation
   3  * IUCV protocol stack for Linux on zSeries
   4  * Version 1.0
   5  * Author(s): Jennifer Hunt <jenhunt@us.ibm.com>
   6  *
   7  */
   8
   9 #ifndef __AFIUCV_H
  10 #define __AFIUCV_H
  11
  12 #include <asm/types.h>
  13 #include <asm/byteorder.h>
  14 #include <linux/list.h>
  15 #include <linux/poll.h>
  16 #include <linux/socket.h>
  17
  18 #ifndef AF_IUCV
  19 #define AF_IUCV         32
  20 #define PF_IUCV         AF_IUCV
  21 #endif
  22
  23 /* Connection and socket states */
  24 enum {
  25         IUCV_CONNECTED = 1,
  26         IUCV_OPEN,
  27         IUCV_BOUND,
  28         IUCV_LISTEN,
  29         IUCV_SEVERED,
  30         IUCV_DISCONN,
  31         IUCV_CLOSING,
  32         IUCV_CLOSED
  33 };
  34
  35 #define IUCV_QUEUELEN_DEFAULT   65535
  36 #define IUCV_CONN_TIMEOUT       (HZ * 40)
  37 #define IUCV_DISCONN_TIMEOUT    (HZ * 2)
  38 #define IUCV_CONN_IDLE_TIMEOUT  (HZ * 60)
  39 #define IUCV_BUFSIZE_DEFAULT    32768
  40
  41 /* IUCV socket address */
  42 struct sockaddr_iucv {
  43         sa_family_t     siucv_family;
  44         unsigned short  siucv_port;             /* Reserved */
  45         unsigned int    siucv_addr;             /* Reserved */
  46         char            siucv_nodeid[8];        /* Reserved */
  47         char            siucv_user_id[8];       /* Guest User Id */
  48         char            siucv_name[8];          /* Application Name */
  49 };
  50
  51
  52 /* Common socket structures and functions */
  53 struct sock_msg_q {
  54         struct iucv_path        *path;
  55         struct iucv_message     msg;
  56         struct list_head        list;
  57         spinlock_t              lock;
  58 };
  59
  60 #define iucv_sk(__sk) ((struct iucv_sock *) __sk)
  61
  62 struct iucv_sock {
  63         struct sock             sk;
  64         char                    src_user_id[8];
  65         char                    src_name[8];
  66         char                    dst_user_id[8];
  67         char                    dst_name[8];
  68         struct list_head        accept_q;
  69         spinlock_t              accept_q_lock;
  70         struct sock             *parent;
  71         struct iucv_path        *path;
  72         struct sk_buff_head     send_skb_q;
  73         struct sk_buff_head     backlog_skb_q;
  74         struct sock_msg_q       message_q;
  75         unsigned int            send_tag;
  76         u8                      flags;
  77         u16                     msglimit;
  78 };
  79
  80 /* iucv socket options (SOL_IUCV) */
  81 #define SO_IPRMDATA_MSG 0x0080          /* send/recv IPRM_DATA msgs */
  82 #define SO_MSGLIMIT     0x1000          /* get/set IUCV MSGLIMIT */
  83
  84 /* iucv related control messages (scm) */
  85 #define SCM_IUCV_TRGCLS 0x0001          /* target class control message */
  86
  87 struct iucv_sock_list {
  88         struct hlist_head head;
  89         rwlock_t          lock;
  90         atomic_t          autobind_name;
  91 };
  92
  93 unsigned int iucv_sock_poll(struct file *file, struct socket *sock,
  94                             poll_table *wait);
  95 void iucv_sock_link(struct iucv_sock_list *l, struct sock *s);
  96 void iucv_sock_unlink(struct iucv_sock_list *l, struct sock *s);
  97 int  iucv_sock_wait_cnt(struct sock *sk, unsigned long timeo);
  98 void iucv_accept_enqueue(struct sock *parent, struct sock *sk);
  99 void iucv_accept_unlink(struct sock *sk);
 100 struct sock *iucv_accept_dequeue(struct sock *parent, struct socket *newsock);
 101
 102 #endif /* __IUCV_H */