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