1/* 2 * ncp_fs_sb.h 3 * 4 * Copyright (C) 1995, 1996 by Volker Lendecke 5 * 6 */ 7 8#ifndef _NCP_FS_SB 9#define _NCP_FS_SB 10 11#include <linux/types.h> 12#include <linux/ncp_mount.h> 13#include <linux/net.h> 14#include <linux/mutex.h> 15 16#ifdef __KERNEL__ 17 18#include <linux/workqueue.h> 19 20#define NCP_DEFAULT_OPTIONS 0 /* 2 for packet signatures */ 21 22struct sock; 23 24struct ncp_server { 25 26 struct ncp_mount_data_kernel m; /* Nearly all of the mount data is of 27 interest for us later, so we store 28 it completely. */ 29 30 __u8 name_space[NCP_NUMBER_OF_VOLUMES + 2]; 31 32 struct file *ncp_filp; /* File pointer to ncp socket */ 33 struct socket *ncp_sock;/* ncp socket */ 34 struct file *info_filp; 35 struct socket *info_sock; 36 37 u8 sequence; 38 u8 task; 39 u16 connection; /* Remote connection number */ 40 41 u8 completion; /* Status message from server */ 42 u8 conn_status; /* Bit 4 = 1 ==> Server going down, no 43 requests allowed anymore. 44 Bit 0 = 1 ==> Server is down. */ 45 46 int buffer_size; /* Negotiated bufsize */ 47 48 int reply_size; /* Size of last reply */ 49 50 int packet_size; 51 unsigned char *packet; /* Here we prepare requests and 52 receive replies */ 53 unsigned char *txbuf; /* Storage for current request */ 54 unsigned char *rxbuf; /* Storage for reply to current request */ 55 56 int lock; /* To prevent mismatch in protocols. */ 57 struct mutex mutex; 58 59 int current_size; /* for packet preparation */ 60 int has_subfunction; 61 int ncp_reply_size; 62 63 int root_setuped; 64 65 /* info for packet signing */ 66 int sign_wanted; /* 1=Server needs signed packets */ 67 int sign_active; /* 0=don't do signing, 1=do */ 68 char sign_root[8]; /* generated from password and encr. key */ 69 char sign_last[16]; 70 71 /* Authentication info: NDS or BINDERY, username */ 72 struct { 73 int auth_type; 74 size_t object_name_len; 75 void* object_name; 76 int object_type; 77 } auth; 78 /* Password info */ 79 struct { 80 size_t len; 81 void* data; 82 } priv; 83 84 /* nls info: codepage for volume and charset for I/O */ 85 struct nls_table *nls_vol; 86 struct nls_table *nls_io; 87 88 /* maximum age in jiffies */ 89 int dentry_ttl; 90 91 /* miscellaneous */ 92 unsigned int flags; 93 94 spinlock_t requests_lock; /* Lock accesses to tx.requests, tx.creq and rcv.creq when STREAM mode */ 95 96 void (*data_ready)(struct sock* sk, int len); 97 void (*error_report)(struct sock* sk); 98 void (*write_space)(struct sock* sk); /* STREAM mode only */ 99 struct { 100 struct work_struct tq; /* STREAM/DGRAM: data/error ready */ 101 struct ncp_request_reply* creq; /* STREAM/DGRAM: awaiting reply from this request */ 102 struct mutex creq_mutex; /* DGRAM only: lock accesses to rcv.creq */ 103 104 unsigned int state; /* STREAM only: receiver state */ 105 struct { 106 __u32 magic __attribute__((packed)); 107 __u32 len __attribute__((packed)); 108 __u16 type __attribute__((packed)); 109 __u16 p1 __attribute__((packed)); 110 __u16 p2 __attribute__((packed)); 111 __u16 p3 __attribute__((packed)); 112 __u16 type2 __attribute__((packed)); 113 } buf; /* STREAM only: temporary buffer */ 114 unsigned char* ptr; /* STREAM only: pointer to data */ 115 size_t len; /* STREAM only: length of data to receive */ 116 } rcv; 117 struct { 118 struct list_head requests; /* STREAM only: queued requests */ 119 struct work_struct tq; /* STREAM only: transmitter ready */ 120 struct ncp_request_reply* creq; /* STREAM only: currently transmitted entry */ 121 } tx; 122 struct timer_list timeout_tm; /* DGRAM only: timeout timer */ 123 struct work_struct timeout_tq; /* DGRAM only: associated queue, we run timers from process context */ 124 int timeout_last; /* DGRAM only: current timeout length */ 125 int timeout_retries; /* DGRAM only: retries left */ 126 struct { 127 size_t len; 128 __u8 data[128]; 129 } unexpected_packet; 130}; 131 132extern void ncp_tcp_rcv_proc(struct work_struct *work); 133extern void ncp_tcp_tx_proc(struct work_struct *work); 134extern void ncpdgram_rcv_proc(struct work_struct *work); 135extern void ncpdgram_timeout_proc(struct work_struct *work); 136extern void ncpdgram_timeout_call(unsigned long server); 137extern void ncp_tcp_data_ready(struct sock* sk, int len); 138extern void ncp_tcp_write_space(struct sock* sk); 139extern void ncp_tcp_error_report(struct sock* sk); 140 141#define NCP_FLAG_UTF8 1 142 143#define NCP_CLR_FLAG(server, flag) ((server)->flags &= ~(flag)) 144#define NCP_SET_FLAG(server, flag) ((server)->flags |= (flag)) 145#define NCP_IS_FLAG(server, flag) ((server)->flags & (flag)) 146 147static inline int ncp_conn_valid(struct ncp_server *server) 148{ 149 return ((server->conn_status & 0x11) == 0); 150} 151 152static inline void ncp_invalidate_conn(struct ncp_server *server) 153{ 154 server->conn_status |= 0x01; 155} 156 157#endif /* __KERNEL__ */ 158 159#endif 160 161