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lastdragon
2026-09-06 12:53:21 -06:00
parent 662efe3c2a
commit ad2088d178
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linux-7.2.3/include/net/iucv/af_iucv.h
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright 2006 IBM Corporation
* IUCV protocol stack for Linux on zSeries
* Version 1.0
* Author(s): Jennifer Hunt <jenhunt@us.ibm.com>
*
*/
#ifndef __AFIUCV_H
#define __AFIUCV_H
#include <asm/types.h>
#include <asm/byteorder.h>
#include <linux/list.h>
#include <linux/poll.h>
#include <linux/socket.h>
#include <net/iucv/iucv.h>
#ifndef AF_IUCV
#define AF_IUCV 32
#define PF_IUCV AF_IUCV
#endif
/* Connection and socket states */
enum {
IUCV_CONNECTED = 1,
IUCV_OPEN,
IUCV_BOUND,
IUCV_LISTEN,
IUCV_DISCONN,
IUCV_CLOSING,
IUCV_CLOSED
};
#define IUCV_QUEUELEN_DEFAULT 65535
#define IUCV_HIPER_MSGLIM_DEFAULT 128
#define IUCV_CONN_TIMEOUT (HZ * 40)
#define IUCV_DISCONN_TIMEOUT (HZ * 2)
#define IUCV_CONN_IDLE_TIMEOUT (HZ * 60)
#define IUCV_BUFSIZE_DEFAULT 32768
/* IUCV socket address */
struct sockaddr_iucv {
sa_family_t siucv_family;
unsigned short siucv_port; /* Reserved */
unsigned int siucv_addr; /* Reserved */
char siucv_nodeid[8]; /* Reserved */
char siucv_user_id[8]; /* Guest User Id */
char siucv_name[8]; /* Application Name */
};
/* Common socket structures and functions */
struct sock_msg_q {
struct iucv_path *path;
struct iucv_message msg;
struct list_head list;
spinlock_t lock;
};
#define AF_IUCV_FLAG_ACK 0x1
#define AF_IUCV_FLAG_SYN 0x2
#define AF_IUCV_FLAG_FIN 0x4
#define AF_IUCV_FLAG_WIN 0x8
#define AF_IUCV_FLAG_SHT 0x10
struct af_iucv_trans_hdr {
u16 magic;
u8 version;
u8 flags;
u16 window;
char destNodeID[8];
char destUserID[8];
char destAppName[16];
char srcNodeID[8];
char srcUserID[8];
char srcAppName[16]; /* => 70 bytes */
struct iucv_message iucv_hdr; /* => 33 bytes */
u8 pad; /* total 104 bytes */
} __packed;
static inline struct af_iucv_trans_hdr *iucv_trans_hdr(struct sk_buff *skb)
{
return (struct af_iucv_trans_hdr *)skb_network_header(skb);
}
enum iucv_tx_notify {
/* transmission of skb is completed and was successful */
TX_NOTIFY_OK = 0,
/* target is unreachable */
TX_NOTIFY_UNREACHABLE = 1,
/* transfer pending queue full */
TX_NOTIFY_TPQFULL = 2,
/* general error */
TX_NOTIFY_GENERALERROR = 3,
/* transmission of skb is pending - may interleave
* with TX_NOTIFY_DELAYED_* */
TX_NOTIFY_PENDING = 4,
/* transmission of skb was done successfully (delayed) */
TX_NOTIFY_DELAYED_OK = 5,
/* target unreachable (detected delayed) */
TX_NOTIFY_DELAYED_UNREACHABLE = 6,
/* general error (detected delayed) */
TX_NOTIFY_DELAYED_GENERALERROR = 7,
};
#define iucv_sk(__sk) ((struct iucv_sock *) __sk)
#define AF_IUCV_TRANS_IUCV 0
#define AF_IUCV_TRANS_HIPER 1
struct iucv_sock {
struct sock sk;
struct_group(init,
char src_user_id[8];
char src_name[8];
char dst_user_id[8];
char dst_name[8];
);
struct list_head accept_q;
spinlock_t accept_q_lock;
struct sock *parent;
struct iucv_path *path;
struct net_device *hs_dev;
struct sk_buff_head send_skb_q;
struct sk_buff_head backlog_skb_q;
struct sock_msg_q message_q;
unsigned int send_tag;
u8 flags;
u16 msglimit;
u16 msglimit_peer;
atomic_t skbs_in_xmit;
atomic_t msg_sent;
atomic_t msg_recv;
atomic_t pendings;
int transport;
void (*sk_txnotify)(struct sock *sk,
enum iucv_tx_notify n);
};
struct iucv_skb_cb {
u32 class; /* target class of message */
u32 tag; /* tag associated with message */
u32 offset; /* offset for skb receival */
};
#define IUCV_SKB_CB(__skb) ((struct iucv_skb_cb *)&((__skb)->cb[0]))
/* iucv socket options (SOL_IUCV) */
#define SO_IPRMDATA_MSG 0x0080 /* send/recv IPRM_DATA msgs */
#define SO_MSGLIMIT 0x1000 /* get/set IUCV MSGLIMIT */
#define SO_MSGSIZE 0x0800 /* get maximum msgsize */
/* iucv related control messages (scm) */
#define SCM_IUCV_TRGCLS 0x0001 /* target class control message */
struct iucv_sock_list {
struct hlist_head head;
rwlock_t lock;
atomic_t autobind_name;
};
#endif /* __IUCV_H */
linux-7.2.3/include/net/iucv/iucv.h
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/* SPDX-License-Identifier: GPL-2.0 */
/*
* drivers/s390/net/iucv.h
* IUCV base support.
*
* S390 version
* Copyright 2000, 2006 IBM Corporation
* Author(s):Alan Altmark (Alan_Altmark@us.ibm.com)
* Xenia Tkatschow (xenia@us.ibm.com)
* Rewritten for af_iucv:
* Martin Schwidefsky <schwidefsky@de.ibm.com>
*
*
* Functionality:
* To explore any of the IUCV functions, one must first register their
* program using iucv_register(). Once your program has successfully
* completed a register, it can exploit the other functions.
* For further reference on all IUCV functionality, refer to the
* CP Programming Services book, also available on the web thru
* www.vm.ibm.com/pubs, manual # SC24-6084
*
* Definition of Return Codes
* - All positive return codes including zero are reflected back
* from CP. The definition of each return code can be found in
* CP Programming Services book.
* - Return Code of:
* -EINVAL: Invalid value
* -ENOMEM: storage allocation failed
*/
#include <linux/types.h>
#include <linux/slab.h>
#include <asm/dma-types.h>
#include <asm/debug.h>
/*
* IUCV option flags usable by device drivers:
*
* IUCV_IPRMDATA Indicates that your program can handle a message in the
* parameter list / a message is sent in the parameter list.
* Used for iucv_path_accept, iucv_path_connect,
* iucv_message_reply, iucv_message_send, iucv_message_send2way.
* IUCV_IPQUSCE Indicates that you do not want to receive messages on this
* path until an iucv_path_resume is issued.
* Used for iucv_path_accept, iucv_path_connect.
* IUCV_IPBUFLST Indicates that an address list is used for the message data.
* Used for iucv_message_receive, iucv_message_send,
* iucv_message_send2way.
* IUCV_IPPRTY Specifies that you want to send priority messages.
* Used for iucv_path_accept, iucv_path_connect,
* iucv_message_reply, iucv_message_send, iucv_message_send2way.
* IUCV_IPSYNC Indicates a synchronous send request.
* Used for iucv_message_send, iucv_message_send2way.
* IUCV_IPANSLST Indicates that an address list is used for the reply data.
* Used for iucv_message_reply, iucv_message_send2way.
* IUCV_IPLOCAL Specifies that the communication partner has to be on the
* local system. If local is specified no target class can be
* specified.
* Used for iucv_path_connect.
*
* All flags are defined in the input field IPFLAGS1 of each function
* and can be found in CP Programming Services.
*/
#define IUCV_IPRMDATA 0x80
#define IUCV_IPQUSCE 0x40
#define IUCV_IPBUFLST 0x40
#define IUCV_IPPRTY 0x20
#define IUCV_IPANSLST 0x08
#define IUCV_IPSYNC 0x04
#define IUCV_IPLOCAL 0x01
/*
* iucv_array : Defines buffer array.
* Inside the array may be 31- bit addresses and 31-bit lengths.
* Use a pointer to an iucv_array as the buffer, reply or answer
* parameter on iucv_message_send, iucv_message_send2way, iucv_message_receive
* and iucv_message_reply if IUCV_IPBUFLST or IUCV_IPANSLST are used.
*/
struct iucv_array {
dma32_t address;
u32 length;
} __attribute__ ((aligned (8)));
extern const struct bus_type iucv_bus;
struct device_driver;
struct device *iucv_alloc_device(const struct attribute_group **attrs,
struct device_driver *driver, void *priv,
const char *fmt, ...) __printf(4, 5);
/*
* struct iucv_path
* pathid: 16 bit path identification
* msglim: 16 bit message limit
* flags: properties of the path: IPRMDATA, IPQUSCE, IPPRTY
* handler: address of iucv handler structure
* private: private information of the handler associated with the path
* list: list_head for the iucv_handler path list.
*/
struct iucv_path {
u16 pathid;
u16 msglim;
u8 flags;
void *private;
struct iucv_handler *handler;
struct list_head list;
};
/*
* struct iucv_message
* id: 32 bit message id
* audit: 32 bit error information of purged or replied messages
* class: 32 bit target class of a message (source class for replies)
* tag: 32 bit tag to be associated with the message
* length: 32 bit length of the message / reply
* reply_size: 32 bit maximum allowed length of the reply
* rmmsg: 8 byte inline message
* flags: message properties (IUCV_IPPRTY)
*/
struct iucv_message {
u32 id;
u32 audit;
u32 class;
u32 tag;
u32 length;
u32 reply_size;
u8 rmmsg[8];
u8 flags;
} __packed;
/*
* struct iucv_handler
*
* A vector of functions that handle IUCV interrupts. Each functions gets
* a parameter area as defined by the CP Programming Services and private
* pointer that is provided by the user of the interface.
*/
struct iucv_handler {
/*
* The path_pending function is called after an iucv interrupt
* type 0x01 has been received. The base code allocates a path
* structure and "asks" the handler if this path belongs to the
* handler. To accept the path the path_pending function needs
* to call iucv_path_accept and return 0. If the callback returns
* a value != 0 the iucv base code will continue with the next
* handler. The order in which the path_pending functions are
* called is the order of the registration of the iucv handlers
* to the base code.
*/
int (*path_pending)(struct iucv_path *, u8 *ipvmid, u8 *ipuser);
/*
* The path_complete function is called after an iucv interrupt
* type 0x02 has been received for a path that has been established
* for this handler with iucv_path_connect and got accepted by the
* peer with iucv_path_accept.
*/
void (*path_complete)(struct iucv_path *, u8 *ipuser);
/*
* The path_severed function is called after an iucv interrupt
* type 0x03 has been received. The communication peer shutdown
* his end of the communication path. The path still exists and
* remaining messages can be received until a iucv_path_sever
* shuts down the other end of the path as well.
*/
void (*path_severed)(struct iucv_path *, u8 *ipuser);
/*
* The path_quiesced function is called after an icuv interrupt
* type 0x04 has been received. The communication peer has quiesced
* the path. Delivery of messages is stopped until iucv_path_resume
* has been called.
*/
void (*path_quiesced)(struct iucv_path *, u8 *ipuser);
/*
* The path_resumed function is called after an icuv interrupt
* type 0x05 has been received. The communication peer has resumed
* the path.
*/
void (*path_resumed)(struct iucv_path *, u8 *ipuser);
/*
* The message_pending function is called after an icuv interrupt
* type 0x06 or type 0x07 has been received. A new message is
* available and can be received with iucv_message_receive.
*/
void (*message_pending)(struct iucv_path *, struct iucv_message *);
/*
* The message_complete function is called after an icuv interrupt
* type 0x08 or type 0x09 has been received. A message send with
* iucv_message_send2way has been replied to. The reply can be
* received with iucv_message_receive.
*/
void (*message_complete)(struct iucv_path *, struct iucv_message *);
struct list_head list;
struct list_head paths;
};
int iucv_register(struct iucv_handler *handler, int smp);
void iucv_unregister(struct iucv_handler *handler, int smp);
/**
* iucv_path_alloc - Allocate a new path structure for use with iucv_connect.
* @msglim: initial message limit
* @flags: initial flags
* @gfp: kmalloc allocation flag
*
* Returns: NULL if the memory allocation failed or a pointer to the
* path structure.
*/
static inline struct iucv_path *iucv_path_alloc(u16 msglim, u8 flags, gfp_t gfp)
{
struct iucv_path *path;
path = kzalloc_obj(struct iucv_path, gfp);
if (path) {
path->msglim = msglim;
path->flags = flags;
}
return path;
}
/**
* iucv_path_free - Frees a path structure.
* @path: address of iucv path structure
*/
static inline void iucv_path_free(struct iucv_path *path)
{
kfree(path);
}
int iucv_path_accept(struct iucv_path *path, struct iucv_handler *handler,
u8 *userdata, void *private);
int iucv_path_connect(struct iucv_path *path, struct iucv_handler *handler,
u8 *userid, u8 *system, u8 *userdata,
void *private);
int iucv_path_quiesce(struct iucv_path *path, u8 *userdata);
int iucv_path_resume(struct iucv_path *path, u8 *userdata);
int iucv_path_sever(struct iucv_path *path, u8 *userdata);
int iucv_message_purge(struct iucv_path *path, struct iucv_message *msg,
u32 srccls);
int iucv_message_receive(struct iucv_path *path, struct iucv_message *msg,
u8 flags, void *buffer, size_t size, size_t *residual);
int __iucv_message_receive(struct iucv_path *path, struct iucv_message *msg,
u8 flags, void *buffer, size_t size,
size_t *residual);
int iucv_message_reject(struct iucv_path *path, struct iucv_message *msg);
int iucv_message_reply(struct iucv_path *path, struct iucv_message *msg,
u8 flags, void *reply, size_t size);
int iucv_message_send(struct iucv_path *path, struct iucv_message *msg,
u8 flags, u32 srccls, void *buffer, size_t size);
int __iucv_message_send(struct iucv_path *path, struct iucv_message *msg,
u8 flags, u32 srccls, void *buffer, size_t size);
int iucv_message_send2way(struct iucv_path *path, struct iucv_message *msg,
u8 flags, u32 srccls, void *buffer, size_t size,
void *answer, size_t asize, size_t *residual);
struct iucv_interface {
int (*message_receive)(struct iucv_path *path, struct iucv_message *msg,
u8 flags, void *buffer, size_t size, size_t *residual);
int (*__message_receive)(struct iucv_path *path,
struct iucv_message *msg, u8 flags, void *buffer, size_t size,
size_t *residual);
int (*message_reply)(struct iucv_path *path, struct iucv_message *msg,
u8 flags, void *reply, size_t size);
int (*message_reject)(struct iucv_path *path, struct iucv_message *msg);
int (*message_send)(struct iucv_path *path, struct iucv_message *msg,
u8 flags, u32 srccls, void *buffer, size_t size);
int (*__message_send)(struct iucv_path *path, struct iucv_message *msg,
u8 flags, u32 srccls, void *buffer, size_t size);
int (*message_send2way)(struct iucv_path *path,
struct iucv_message *msg, u8 flags, u32 srccls, void *buffer,
size_t size, void *answer, size_t asize, size_t *residual);
int (*message_purge)(struct iucv_path *path, struct iucv_message *msg,
u32 srccls);
int (*path_accept)(struct iucv_path *path, struct iucv_handler *handler,
u8 userdata[16], void *private);
int (*path_connect)(struct iucv_path *path,
struct iucv_handler *handler,
u8 userid[8], u8 system[8], u8 userdata[16], void *private);
int (*path_quiesce)(struct iucv_path *path, u8 userdata[16]);
int (*path_resume)(struct iucv_path *path, u8 userdata[16]);
int (*path_sever)(struct iucv_path *path, u8 userdata[16]);
int (*iucv_register)(struct iucv_handler *handler, int smp);
void (*iucv_unregister)(struct iucv_handler *handler, int smp);
const struct bus_type *bus;
struct device *root;
};
extern struct iucv_interface iucv_if;