blob: b0eaeb02d46d14ceb87f6e62d4765959c8383a66 [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +01001/* SPDX-License-Identifier: GPL-2.0 */
Jennifer Hunteac37312007-02-08 13:51:54 -08002/*
3 * Copyright 2006 IBM Corporation
4 * IUCV protocol stack for Linux on zSeries
5 * Version 1.0
6 * Author(s): Jennifer Hunt <jenhunt@us.ibm.com>
7 *
8 */
9
10#ifndef __AFIUCV_H
11#define __AFIUCV_H
12
13#include <asm/types.h>
14#include <asm/byteorder.h>
15#include <linux/list.h>
16#include <linux/poll.h>
17#include <linux/socket.h>
Ursula Braun3881ac42011-08-08 01:33:54 +000018#include <net/iucv/iucv.h>
Jennifer Hunteac37312007-02-08 13:51:54 -080019
20#ifndef AF_IUCV
21#define AF_IUCV 32
22#define PF_IUCV AF_IUCV
23#endif
24
25/* Connection and socket states */
26enum {
27 IUCV_CONNECTED = 1,
28 IUCV_OPEN,
29 IUCV_BOUND,
30 IUCV_LISTEN,
Jennifer Hunteac37312007-02-08 13:51:54 -080031 IUCV_DISCONN,
Jennifer Hunt561e0362007-05-04 12:22:07 -070032 IUCV_CLOSING,
Jennifer Hunteac37312007-02-08 13:51:54 -080033 IUCV_CLOSED
34};
35
36#define IUCV_QUEUELEN_DEFAULT 65535
Ursula Braun3881ac42011-08-08 01:33:54 +000037#define IUCV_HIPER_MSGLIM_DEFAULT 128
Jennifer Hunteac37312007-02-08 13:51:54 -080038#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 */
44struct 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 */
Ursula Braunf0703c82007-10-08 02:03:31 -070055struct sock_msg_q {
56 struct iucv_path *path;
57 struct iucv_message msg;
58 struct list_head list;
59 spinlock_t lock;
60};
Jennifer Hunteac37312007-02-08 13:51:54 -080061
Ursula Braun3881ac42011-08-08 01:33:54 +000062#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
Ursula Braun82492a32012-03-07 02:06:24 +000066#define AF_IUCV_FLAG_SHT 0x10
Ursula Braun3881ac42011-08-08 01:33:54 +000067
68struct af_iucv_trans_hdr {
69 u16 magic;
70 u8 version;
71 u8 flags;
72 u16 window;
73 char destNodeID[8];
74 char destUserID[8];
75 char destAppName[16];
76 char srcNodeID[8];
77 char srcUserID[8];
78 char srcAppName[16]; /* => 70 bytes */
79 struct iucv_message iucv_hdr; /* => 33 bytes */
80 u8 pad; /* total 104 bytes */
81} __packed;
82
83enum iucv_tx_notify {
84 /* transmission of skb is completed and was successful */
85 TX_NOTIFY_OK = 0,
86 /* target is unreachable */
87 TX_NOTIFY_UNREACHABLE = 1,
88 /* transfer pending queue full */
89 TX_NOTIFY_TPQFULL = 2,
90 /* general error */
91 TX_NOTIFY_GENERALERROR = 3,
92 /* transmission of skb is pending - may interleave
93 * with TX_NOTIFY_DELAYED_* */
94 TX_NOTIFY_PENDING = 4,
95 /* transmission of skb was done successfully (delayed) */
96 TX_NOTIFY_DELAYED_OK = 5,
97 /* target unreachable (detected delayed) */
98 TX_NOTIFY_DELAYED_UNREACHABLE = 6,
99 /* general error (detected delayed) */
100 TX_NOTIFY_DELAYED_GENERALERROR = 7,
101};
102
Jennifer Hunteac37312007-02-08 13:51:54 -0800103#define iucv_sk(__sk) ((struct iucv_sock *) __sk)
104
Ursula Braun3881ac42011-08-08 01:33:54 +0000105#define AF_IUCV_TRANS_IUCV 0
106#define AF_IUCV_TRANS_HIPER 1
107
Jennifer Hunteac37312007-02-08 13:51:54 -0800108struct iucv_sock {
109 struct sock sk;
110 char src_user_id[8];
111 char src_name[8];
112 char dst_user_id[8];
113 char dst_name[8];
114 struct list_head accept_q;
Ursula Braunfebca282007-07-14 19:04:25 -0700115 spinlock_t accept_q_lock;
Jennifer Hunteac37312007-02-08 13:51:54 -0800116 struct sock *parent;
117 struct iucv_path *path;
Ursula Braun800c5eb2012-02-08 00:19:47 +0000118 struct net_device *hs_dev;
Jennifer Hunteac37312007-02-08 13:51:54 -0800119 struct sk_buff_head send_skb_q;
Jennifer Hunt561e0362007-05-04 12:22:07 -0700120 struct sk_buff_head backlog_skb_q;
Ursula Braunf0703c82007-10-08 02:03:31 -0700121 struct sock_msg_q message_q;
Jennifer Hunteac37312007-02-08 13:51:54 -0800122 unsigned int send_tag;
Hendrik Brueckner9d5c5d82009-04-21 23:26:22 +0000123 u8 flags;
Hendrik Brueckner09488e22009-04-21 23:26:27 +0000124 u16 msglimit;
Ursula Braun3881ac42011-08-08 01:33:54 +0000125 u16 msglimit_peer;
126 atomic_t msg_sent;
127 atomic_t msg_recv;
128 atomic_t pendings;
129 int transport;
130 void (*sk_txnotify)(struct sk_buff *skb,
131 enum iucv_tx_notify n);
Jennifer Hunteac37312007-02-08 13:51:54 -0800132};
133
Ursula Braunf9c41a62013-04-07 22:19:26 +0000134struct iucv_skb_cb {
135 u32 class; /* target class of message */
136 u32 tag; /* tag associated with message */
137 u32 offset; /* offset for skb receival */
138};
139
140#define IUCV_SKB_CB(__skb) ((struct iucv_skb_cb *)&((__skb)->cb[0]))
141
Hendrik Brueckner9d5c5d82009-04-21 23:26:22 +0000142/* iucv socket options (SOL_IUCV) */
143#define SO_IPRMDATA_MSG 0x0080 /* send/recv IPRM_DATA msgs */
Hendrik Brueckner09488e22009-04-21 23:26:27 +0000144#define SO_MSGLIMIT 0x1000 /* get/set IUCV MSGLIMIT */
Ursula Braun51363b82012-02-08 00:19:48 +0000145#define SO_MSGSIZE 0x0800 /* get maximum msgsize */
Hendrik Brueckner9d5c5d82009-04-21 23:26:22 +0000146
Hendrik Brueckner44b1e6b2009-04-21 23:26:24 +0000147/* iucv related control messages (scm) */
148#define SCM_IUCV_TRGCLS 0x0001 /* target class control message */
149
Jennifer Hunteac37312007-02-08 13:51:54 -0800150struct iucv_sock_list {
151 struct hlist_head head;
152 rwlock_t lock;
153 atomic_t autobind_name;
154};
155
Jennifer Hunteac37312007-02-08 13:51:54 -0800156void iucv_sock_link(struct iucv_sock_list *l, struct sock *s);
157void iucv_sock_unlink(struct iucv_sock_list *l, struct sock *s);
Jennifer Hunteac37312007-02-08 13:51:54 -0800158void iucv_accept_enqueue(struct sock *parent, struct sock *sk);
159void iucv_accept_unlink(struct sock *sk);
160struct sock *iucv_accept_dequeue(struct sock *parent, struct socket *newsock);
161
162#endif /* __IUCV_H */