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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
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>
18#include <net/iucv/iucv.h>
19
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,
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 */
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 */
55struct 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#define AF_IUCV_FLAG_SHT 0x10
67
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
103#define iucv_sk(__sk) ((struct iucv_sock *) __sk)
104
105#define AF_IUCV_TRANS_IUCV 0
106#define AF_IUCV_TRANS_HIPER 1
107
108struct 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;
115 spinlock_t accept_q_lock;
116 struct sock *parent;
117 struct iucv_path *path;
118 struct net_device *hs_dev;
119 struct sk_buff_head send_skb_q;
120 struct sk_buff_head backlog_skb_q;
121 struct sock_msg_q message_q;
122 unsigned int send_tag;
123 u8 flags;
124 u16 msglimit;
125 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);
132};
133
134struct 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
142/* iucv socket options (SOL_IUCV) */
143#define SO_IPRMDATA_MSG 0x0080 /* send/recv IPRM_DATA msgs */
144#define SO_MSGLIMIT 0x1000 /* get/set IUCV MSGLIMIT */
145#define SO_MSGSIZE 0x0800 /* get maximum msgsize */
146
147/* iucv related control messages (scm) */
148#define SCM_IUCV_TRGCLS 0x0001 /* target class control message */
149
150struct iucv_sock_list {
151 struct hlist_head head;
152 rwlock_t lock;
153 atomic_t autobind_name;
154};
155
156__poll_t iucv_sock_poll(struct file *file, struct socket *sock,
157 poll_table *wait);
158void iucv_sock_link(struct iucv_sock_list *l, struct sock *s);
159void iucv_sock_unlink(struct iucv_sock_list *l, struct sock *s);
160void iucv_accept_enqueue(struct sock *parent, struct sock *sk);
161void iucv_accept_unlink(struct sock *sk);
162struct sock *iucv_accept_dequeue(struct sock *parent, struct socket *newsock);
163
164#endif /* __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#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 */
25enum {
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 */
43struct 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 */
54struct 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
67struct 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
82enum 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
107struct 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
133struct 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
149struct iucv_sock_list {
150 struct hlist_head head;
151 rwlock_t lock;
152 atomic_t autobind_name;
153};
154
155unsigned int iucv_sock_poll(struct file *file, struct socket *sock,
156 poll_table *wait);
157void iucv_sock_link(struct iucv_sock_list *l, struct sock *s);
158void iucv_sock_unlink(struct iucv_sock_list *l, struct sock *s);
159void iucv_accept_enqueue(struct sock *parent, struct sock *sk);
160void iucv_accept_unlink(struct sock *sk);
161struct sock *iucv_accept_dequeue(struct sock *parent, struct socket *newsock);
162
163#endif /* __IUCV_H */