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_SEVERED, 31 IUCV_DISCONN, 32 IUCV_CLOSING, 33 IUCV_CLOSED 34 }; 35 36 #define IUCV_QUEUELEN_DEFAULT 65535 37 #define IUCV_HIPER_MSGLIM_DEFAULT 128 38 #define IUCV_CONN_TIMEOUT (HZ * 40) 39 #define IUCV_DISCONN_TIMEOUT (HZ * 2) 40 #define IUCV_CONN_IDLE_TIMEOUT (HZ * 60) 41 #define IUCV_BUFSIZE_DEFAULT 32768 42 43 /* IUCV socket address */ 44 struct sockaddr_iucv { 45 sa_family_t siucv_family; 46 unsigned short siucv_port; /* Reserved */ 47 unsigned int siucv_addr; /* Reserved */ 48 char siucv_nodeid[8]; /* Reserved */ 49 char siucv_user_id[8]; /* Guest User Id */ 50 char siucv_name[8]; /* Application Name */ 51 }; 52 53 54 /* Common socket structures and functions */ 55 struct sock_msg_q { 56 struct iucv_path *path; 57 struct iucv_message msg; 58 struct list_head list; 59 spinlock_t lock; 60 }; 61 62 #define AF_IUCV_FLAG_ACK 0x1 63 #define AF_IUCV_FLAG_SYN 0x2 64 #define AF_IUCV_FLAG_FIN 0x4 65 #define AF_IUCV_FLAG_WIN 0x8 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 sk_buff_head send_skb_q; 118 struct sk_buff_head backlog_skb_q; 119 struct sock_msg_q message_q; 120 unsigned int send_tag; 121 u8 flags; 122 u16 msglimit; 123 u16 msglimit_peer; 124 atomic_t msg_sent; 125 atomic_t msg_recv; 126 atomic_t pendings; 127 int transport; 128 void (*sk_txnotify)(struct sk_buff *skb, 129 enum iucv_tx_notify n); 130 }; 131 132 /* iucv socket options (SOL_IUCV) */ 133 #define SO_IPRMDATA_MSG 0x0080 /* send/recv IPRM_DATA msgs */ 134 #define SO_MSGLIMIT 0x1000 /* get/set IUCV MSGLIMIT */ 135 136 /* iucv related control messages (scm) */ 137 #define SCM_IUCV_TRGCLS 0x0001 /* target class control message */ 138 139 struct iucv_sock_list { 140 struct hlist_head head; 141 rwlock_t lock; 142 atomic_t autobind_name; 143 }; 144 145 unsigned int iucv_sock_poll(struct file *file, struct socket *sock, 146 poll_table *wait); 147 void iucv_sock_link(struct iucv_sock_list *l, struct sock *s); 148 void iucv_sock_unlink(struct iucv_sock_list *l, struct sock *s); 149 int iucv_sock_wait_cnt(struct sock *sk, unsigned long timeo); 150 void iucv_accept_enqueue(struct sock *parent, struct sock *sk); 151 void iucv_accept_unlink(struct sock *sk); 152 struct sock *iucv_accept_dequeue(struct sock *parent, struct socket *newsock); 153 154 #endif /* __IUCV_H */ 155