cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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af_iucv.h (3974B)

      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
     83static inline struct af_iucv_trans_hdr *iucv_trans_hdr(struct sk_buff *skb)
     84{
     85	return (struct af_iucv_trans_hdr *)skb_network_header(skb);
     86}
     87
     88enum iucv_tx_notify {
     89	/* transmission of skb is completed and was successful */
     90	TX_NOTIFY_OK = 0,
     91	/* target is unreachable */
     92	TX_NOTIFY_UNREACHABLE = 1,
     93	/* transfer pending queue full */
     94	TX_NOTIFY_TPQFULL = 2,
     95	/* general error */
     96	TX_NOTIFY_GENERALERROR = 3,
     97	/* transmission of skb is pending - may interleave
     98	 * with TX_NOTIFY_DELAYED_* */
     99	TX_NOTIFY_PENDING = 4,
    100	/* transmission of skb was done successfully (delayed) */
    101	TX_NOTIFY_DELAYED_OK = 5,
    102	/* target unreachable (detected delayed) */
    103	TX_NOTIFY_DELAYED_UNREACHABLE = 6,
    104	/* general error (detected delayed) */
    105	TX_NOTIFY_DELAYED_GENERALERROR = 7,
    106};
    107
    108#define iucv_sk(__sk) ((struct iucv_sock *) __sk)
    109
    110#define AF_IUCV_TRANS_IUCV 0
    111#define AF_IUCV_TRANS_HIPER 1
    112
    113struct iucv_sock {
    114	struct sock		sk;
    115	struct_group(init,
    116		char		src_user_id[8];
    117		char		src_name[8];
    118		char		dst_user_id[8];
    119		char		dst_name[8];
    120	);
    121	struct list_head	accept_q;
    122	spinlock_t		accept_q_lock;
    123	struct sock		*parent;
    124	struct iucv_path	*path;
    125	struct net_device	*hs_dev;
    126	struct sk_buff_head	send_skb_q;
    127	struct sk_buff_head	backlog_skb_q;
    128	struct sock_msg_q	message_q;
    129	unsigned int		send_tag;
    130	u8			flags;
    131	u16			msglimit;
    132	u16			msglimit_peer;
    133	atomic_t		skbs_in_xmit;
    134	atomic_t		msg_sent;
    135	atomic_t		msg_recv;
    136	atomic_t		pendings;
    137	int			transport;
    138	void			(*sk_txnotify)(struct sock *sk,
    139					       enum iucv_tx_notify n);
    140};
    141
    142struct iucv_skb_cb {
    143	u32	class;		/* target class of message */
    144	u32	tag;		/* tag associated with message */
    145	u32	offset;		/* offset for skb receival */
    146};
    147
    148#define IUCV_SKB_CB(__skb)	((struct iucv_skb_cb *)&((__skb)->cb[0]))
    149
    150/* iucv socket options (SOL_IUCV) */
    151#define SO_IPRMDATA_MSG	0x0080		/* send/recv IPRM_DATA msgs */
    152#define SO_MSGLIMIT	0x1000		/* get/set IUCV MSGLIMIT */
    153#define SO_MSGSIZE	0x0800		/* get maximum msgsize */
    154
    155/* iucv related control messages (scm) */
    156#define SCM_IUCV_TRGCLS	0x0001		/* target class control message */
    157
    158struct iucv_sock_list {
    159	struct hlist_head head;
    160	rwlock_t	  lock;
    161	atomic_t	  autobind_name;
    162};
    163
    164#endif /* __IUCV_H */