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TOMOYO Linux Cross Reference
Linux/include/net/iucv/af_iucv.h

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  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 #include <net/iucv/iucv.h>
 18 
 19 #ifndef AF_IUCV
 20 #define AF_IUCV         32
 21 #define PF_IUCV         AF_IUCV
 22 #endif
 23 
 24 /* Connection and socket states */
 25 enum {
 26         IUCV_CONNECTED = 1,
 27         IUCV_OPEN,
 28         IUCV_BOUND,
 29         IUCV_LISTEN,
 30         IUCV_DISCONN,
 31         IUCV_CLOSING,
 32         IUCV_CLOSED
 33 };
 34 
 35 #define IUCV_QUEUELEN_DEFAULT   65535
 36 #define IUCV_HIPER_MSGLIM_DEFAULT       128
 37 #define IUCV_CONN_TIMEOUT       (HZ * 40)
 38 #define IUCV_DISCONN_TIMEOUT    (HZ * 2)
 39 #define IUCV_CONN_IDLE_TIMEOUT  (HZ * 60)
 40 #define IUCV_BUFSIZE_DEFAULT    32768
 41 
 42 /* IUCV socket address */
 43 struct sockaddr_iucv {
 44         sa_family_t     siucv_family;
 45         unsigned short  siucv_port;             /* Reserved */
 46         unsigned int    siucv_addr;             /* Reserved */
 47         char            siucv_nodeid[8];        /* Reserved */
 48         char            siucv_user_id[8];       /* Guest User Id */
 49         char            siucv_name[8];          /* Application Name */
 50 };
 51 
 52 
 53 /* Common socket structures and functions */
 54 struct sock_msg_q {
 55         struct iucv_path        *path;
 56         struct iucv_message     msg;
 57         struct list_head        list;
 58         spinlock_t              lock;
 59 };
 60 
 61 #define AF_IUCV_FLAG_ACK 0x1
 62 #define AF_IUCV_FLAG_SYN 0x2
 63 #define AF_IUCV_FLAG_FIN 0x4
 64 #define AF_IUCV_FLAG_WIN 0x8
 65 #define AF_IUCV_FLAG_SHT 0x10
 66 
 67 struct af_iucv_trans_hdr {
 68         u16 magic;
 69         u8 version;
 70         u8 flags;
 71         u16 window;
 72         char destNodeID[8];
 73         char destUserID[8];
 74         char destAppName[16];
 75         char srcNodeID[8];
 76         char srcUserID[8];
 77         char srcAppName[16];             /* => 70 bytes */
 78         struct iucv_message iucv_hdr;    /* => 33 bytes */
 79         u8 pad;                          /* total 104 bytes */
 80 } __packed;
 81 
 82 enum iucv_tx_notify {
 83         /* transmission of skb is completed and was successful */
 84         TX_NOTIFY_OK = 0,
 85         /* target is unreachable */
 86         TX_NOTIFY_UNREACHABLE = 1,
 87         /* transfer pending queue full */
 88         TX_NOTIFY_TPQFULL = 2,
 89         /* general error */
 90         TX_NOTIFY_GENERALERROR = 3,
 91         /* transmission of skb is pending - may interleave
 92          * with TX_NOTIFY_DELAYED_* */
 93         TX_NOTIFY_PENDING = 4,
 94         /* transmission of skb was done successfully (delayed) */
 95         TX_NOTIFY_DELAYED_OK = 5,
 96         /* target unreachable (detected delayed) */
 97         TX_NOTIFY_DELAYED_UNREACHABLE = 6,
 98         /* general error (detected delayed) */
 99         TX_NOTIFY_DELAYED_GENERALERROR = 7,
100 };
101 
102 #define iucv_sk(__sk) ((struct iucv_sock *) __sk)
103 
104 #define AF_IUCV_TRANS_IUCV 0
105 #define AF_IUCV_TRANS_HIPER 1
106 
107 struct iucv_sock {
108         struct sock             sk;
109         char                    src_user_id[8];
110         char                    src_name[8];
111         char                    dst_user_id[8];
112         char                    dst_name[8];
113         struct list_head        accept_q;
114         spinlock_t              accept_q_lock;
115         struct sock             *parent;
116         struct iucv_path        *path;
117         struct net_device       *hs_dev;
118         struct sk_buff_head     send_skb_q;
119         struct sk_buff_head     backlog_skb_q;
120         struct sock_msg_q       message_q;
121         unsigned int            send_tag;
122         u8                      flags;
123         u16                     msglimit;
124         u16                     msglimit_peer;
125         atomic_t                msg_sent;
126         atomic_t                msg_recv;
127         atomic_t                pendings;
128         int                     transport;
129         void                    (*sk_txnotify)(struct sk_buff *skb,
130                                                enum iucv_tx_notify n);
131 };
132 
133 struct iucv_skb_cb {
134         u32     class;          /* target class of message */
135         u32     tag;            /* tag associated with message */
136         u32     offset;         /* offset for skb receival */
137 };
138 
139 #define IUCV_SKB_CB(__skb)      ((struct iucv_skb_cb *)&((__skb)->cb[0]))
140 
141 /* iucv socket options (SOL_IUCV) */
142 #define SO_IPRMDATA_MSG 0x0080          /* send/recv IPRM_DATA msgs */
143 #define SO_MSGLIMIT     0x1000          /* get/set IUCV MSGLIMIT */
144 #define SO_MSGSIZE      0x0800          /* get maximum msgsize */
145 
146 /* iucv related control messages (scm) */
147 #define SCM_IUCV_TRGCLS 0x0001          /* target class control message */
148 
149 struct iucv_sock_list {
150         struct hlist_head head;
151         rwlock_t          lock;
152         atomic_t          autobind_name;
153 };
154 
155 unsigned int iucv_sock_poll(struct file *file, struct socket *sock,
156                             poll_table *wait);
157 void iucv_sock_link(struct iucv_sock_list *l, struct sock *s);
158 void iucv_sock_unlink(struct iucv_sock_list *l, struct sock *s);
159 void iucv_accept_enqueue(struct sock *parent, struct sock *sk);
160 void iucv_accept_unlink(struct sock *sk);
161 struct sock *iucv_accept_dequeue(struct sock *parent, struct socket *newsock);
162 
163 #endif /* __IUCV_H */
164 

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