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162 lines
3.9 KiB
162 lines
3.9 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Copyright 2006 IBM Corporation |
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* IUCV protocol stack for Linux on zSeries |
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* Version 1.0 |
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* Author(s): Jennifer Hunt <[email protected]> |
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* |
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*/ |
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#ifndef __AFIUCV_H |
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#define __AFIUCV_H |
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#include <asm/types.h> |
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#include <asm/byteorder.h> |
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#include <linux/list.h> |
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#include <linux/poll.h> |
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#include <linux/socket.h> |
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#include <net/iucv/iucv.h> |
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#ifndef AF_IUCV |
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#define AF_IUCV 32 |
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#define PF_IUCV AF_IUCV |
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#endif |
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/* Connection and socket states */ |
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enum { |
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IUCV_CONNECTED = 1, |
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IUCV_OPEN, |
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IUCV_BOUND, |
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IUCV_LISTEN, |
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IUCV_DISCONN, |
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IUCV_CLOSING, |
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IUCV_CLOSED |
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}; |
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#define IUCV_QUEUELEN_DEFAULT 65535 |
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#define IUCV_HIPER_MSGLIM_DEFAULT 128 |
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#define IUCV_CONN_TIMEOUT (HZ * 40) |
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#define IUCV_DISCONN_TIMEOUT (HZ * 2) |
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#define IUCV_CONN_IDLE_TIMEOUT (HZ * 60) |
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#define IUCV_BUFSIZE_DEFAULT 32768 |
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/* IUCV socket address */ |
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struct sockaddr_iucv { |
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sa_family_t siucv_family; |
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unsigned short siucv_port; /* Reserved */ |
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unsigned int siucv_addr; /* Reserved */ |
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char siucv_nodeid[8]; /* Reserved */ |
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char siucv_user_id[8]; /* Guest User Id */ |
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char siucv_name[8]; /* Application Name */ |
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}; |
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/* Common socket structures and functions */ |
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struct sock_msg_q { |
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struct iucv_path *path; |
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struct iucv_message msg; |
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struct list_head list; |
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spinlock_t lock; |
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}; |
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#define AF_IUCV_FLAG_ACK 0x1 |
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#define AF_IUCV_FLAG_SYN 0x2 |
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#define AF_IUCV_FLAG_FIN 0x4 |
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#define AF_IUCV_FLAG_WIN 0x8 |
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#define AF_IUCV_FLAG_SHT 0x10 |
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struct af_iucv_trans_hdr { |
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u16 magic; |
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u8 version; |
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u8 flags; |
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u16 window; |
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char destNodeID[8]; |
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char destUserID[8]; |
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char destAppName[16]; |
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char srcNodeID[8]; |
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char srcUserID[8]; |
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char srcAppName[16]; /* => 70 bytes */ |
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struct iucv_message iucv_hdr; /* => 33 bytes */ |
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u8 pad; /* total 104 bytes */ |
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} __packed; |
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static inline struct af_iucv_trans_hdr *iucv_trans_hdr(struct sk_buff *skb) |
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{ |
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return (struct af_iucv_trans_hdr *)skb_network_header(skb); |
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} |
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enum iucv_tx_notify { |
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/* transmission of skb is completed and was successful */ |
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TX_NOTIFY_OK = 0, |
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/* target is unreachable */ |
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TX_NOTIFY_UNREACHABLE = 1, |
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/* transfer pending queue full */ |
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TX_NOTIFY_TPQFULL = 2, |
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/* general error */ |
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TX_NOTIFY_GENERALERROR = 3, |
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/* transmission of skb is pending - may interleave |
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* with TX_NOTIFY_DELAYED_* */ |
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TX_NOTIFY_PENDING = 4, |
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/* transmission of skb was done successfully (delayed) */ |
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TX_NOTIFY_DELAYED_OK = 5, |
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/* target unreachable (detected delayed) */ |
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TX_NOTIFY_DELAYED_UNREACHABLE = 6, |
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/* general error (detected delayed) */ |
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TX_NOTIFY_DELAYED_GENERALERROR = 7, |
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}; |
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#define iucv_sk(__sk) ((struct iucv_sock *) __sk) |
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#define AF_IUCV_TRANS_IUCV 0 |
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#define AF_IUCV_TRANS_HIPER 1 |
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struct iucv_sock { |
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struct sock sk; |
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char src_user_id[8]; |
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char src_name[8]; |
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char dst_user_id[8]; |
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char dst_name[8]; |
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struct list_head accept_q; |
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spinlock_t accept_q_lock; |
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struct sock *parent; |
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struct iucv_path *path; |
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struct net_device *hs_dev; |
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struct sk_buff_head send_skb_q; |
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struct sk_buff_head backlog_skb_q; |
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struct sock_msg_q message_q; |
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unsigned int send_tag; |
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u8 flags; |
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u16 msglimit; |
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u16 msglimit_peer; |
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atomic_t skbs_in_xmit; |
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atomic_t msg_sent; |
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atomic_t msg_recv; |
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atomic_t pendings; |
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int transport; |
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void (*sk_txnotify)(struct sock *sk, |
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enum iucv_tx_notify n); |
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}; |
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struct iucv_skb_cb { |
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u32 class; /* target class of message */ |
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u32 tag; /* tag associated with message */ |
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u32 offset; /* offset for skb receival */ |
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}; |
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#define IUCV_SKB_CB(__skb) ((struct iucv_skb_cb *)&((__skb)->cb[0])) |
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/* iucv socket options (SOL_IUCV) */ |
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#define SO_IPRMDATA_MSG 0x0080 /* send/recv IPRM_DATA msgs */ |
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#define SO_MSGLIMIT 0x1000 /* get/set IUCV MSGLIMIT */ |
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#define SO_MSGSIZE 0x0800 /* get maximum msgsize */ |
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/* iucv related control messages (scm) */ |
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#define SCM_IUCV_TRGCLS 0x0001 /* target class control message */ |
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struct iucv_sock_list { |
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struct hlist_head head; |
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rwlock_t lock; |
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atomic_t autobind_name; |
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}; |
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#endif /* __IUCV_H */
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