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 18 #ifndef AF_IUCV 19 #define AF_IUCV 32 20 #define PF_IUCV AF_IUCV 21 #endif 22 23 /* Connection and socket states */ 24 enum { 25 IUCV_CONNECTED = 1, 26 IUCV_OPEN, 27 IUCV_BOUND, 28 IUCV_LISTEN, 29 IUCV_SEVERED, 30 IUCV_DISCONN, 31 IUCV_CLOSING, 32 IUCV_CLOSED 33 }; 34 35 #define IUCV_QUEUELEN_DEFAULT 65535 36 #define IUCV_CONN_TIMEOUT (HZ * 40) 37 #define IUCV_DISCONN_TIMEOUT (HZ * 2) 38 #define IUCV_CONN_IDLE_TIMEOUT (HZ * 60) 39 #define IUCV_BUFSIZE_DEFAULT 32768 40 41 /* IUCV socket address */ 42 struct sockaddr_iucv { 43 sa_family_t siucv_family; 44 unsigned short siucv_port; /* Reserved */ 45 unsigned int siucv_addr; /* Reserved */ 46 char siucv_nodeid[8]; /* Reserved */ 47 char siucv_user_id[8]; /* Guest User Id */ 48 char siucv_name[8]; /* Application Name */ 49 }; 50 51 52 /* Common socket structures and functions */ 53 54 #define iucv_sk(__sk) ((struct iucv_sock *) __sk) 55 56 struct iucv_sock { 57 struct sock sk; 58 char src_user_id[8]; 59 char src_name[8]; 60 char dst_user_id[8]; 61 char dst_name[8]; 62 struct list_head accept_q; 63 spinlock_t accept_q_lock; 64 struct sock *parent; 65 struct iucv_path *path; 66 struct sk_buff_head send_skb_q; 67 struct sk_buff_head backlog_skb_q; 68 unsigned int send_tag; 69 }; 70 71 struct iucv_sock_list { 72 struct hlist_head head; 73 rwlock_t lock; 74 atomic_t autobind_name; 75 }; 76 77 static void iucv_sock_destruct(struct sock *sk); 78 static void iucv_sock_cleanup_listen(struct sock *parent); 79 static void iucv_sock_kill(struct sock *sk); 80 static void iucv_sock_close(struct sock *sk); 81 static int iucv_sock_create(struct socket *sock, int proto); 82 static int iucv_sock_bind(struct socket *sock, struct sockaddr *addr, 83 int addr_len); 84 static int iucv_sock_connect(struct socket *sock, struct sockaddr *addr, 85 int alen, int flags); 86 static int iucv_sock_listen(struct socket *sock, int backlog); 87 static int iucv_sock_accept(struct socket *sock, struct socket *newsock, 88 int flags); 89 static int iucv_sock_getname(struct socket *sock, struct sockaddr *addr, 90 int *len, int peer); 91 static int iucv_sock_sendmsg(struct kiocb *iocb, struct socket *sock, 92 struct msghdr *msg, size_t len); 93 static int iucv_sock_recvmsg(struct kiocb *iocb, struct socket *sock, 94 struct msghdr *msg, size_t len, int flags); 95 unsigned int iucv_sock_poll(struct file *file, struct socket *sock, 96 poll_table *wait); 97 static int iucv_sock_release(struct socket *sock); 98 static int iucv_sock_shutdown(struct socket *sock, int how); 99 100 void iucv_sock_link(struct iucv_sock_list *l, struct sock *s); 101 void iucv_sock_unlink(struct iucv_sock_list *l, struct sock *s); 102 int iucv_sock_wait_state(struct sock *sk, int state, int state2, 103 unsigned long timeo); 104 int iucv_sock_wait_cnt(struct sock *sk, unsigned long timeo); 105 void iucv_accept_enqueue(struct sock *parent, struct sock *sk); 106 void iucv_accept_unlink(struct sock *sk); 107 struct sock *iucv_accept_dequeue(struct sock *parent, struct socket *newsock); 108 109 #endif /* __IUCV_H */ 110