blob: d64b0e89433691bf532577a4b193781c4e0516b6 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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>
Ingo Molnar8e3f9042006-03-23 03:00:43 -080014#include <linux/mutex.h>
Jens Axboef1970c72010-04-22 12:31:11 +020015#include <linux/backing-dev.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070016
17#ifdef __KERNEL__
18
19#include <linux/workqueue.h>
20
21#define NCP_DEFAULT_OPTIONS 0 /* 2 for packet signatures */
22
23struct sock;
24
25struct ncp_server {
26
27 struct ncp_mount_data_kernel m; /* Nearly all of the mount data is of
28 interest for us later, so we store
29 it completely. */
30
31 __u8 name_space[NCP_NUMBER_OF_VOLUMES + 2];
32
33 struct file *ncp_filp; /* File pointer to ncp socket */
34 struct socket *ncp_sock;/* ncp socket */
35 struct file *info_filp;
36 struct socket *info_sock;
37
38 u8 sequence;
39 u8 task;
40 u16 connection; /* Remote connection number */
41
42 u8 completion; /* Status message from server */
43 u8 conn_status; /* Bit 4 = 1 ==> Server going down, no
44 requests allowed anymore.
45 Bit 0 = 1 ==> Server is down. */
46
47 int buffer_size; /* Negotiated bufsize */
48
49 int reply_size; /* Size of last reply */
50
51 int packet_size;
52 unsigned char *packet; /* Here we prepare requests and
53 receive replies */
Pierre Ossmanc5f93cf2007-02-19 11:34:43 +010054 unsigned char *txbuf; /* Storage for current request */
55 unsigned char *rxbuf; /* Storage for reply to current request */
Linus Torvalds1da177e2005-04-16 15:20:36 -070056
57 int lock; /* To prevent mismatch in protocols. */
Ingo Molnar8e3f9042006-03-23 03:00:43 -080058 struct mutex mutex;
Linus Torvalds1da177e2005-04-16 15:20:36 -070059
60 int current_size; /* for packet preparation */
61 int has_subfunction;
62 int ncp_reply_size;
63
64 int root_setuped;
Petr Vandrovec2e54eb92010-09-27 01:47:33 +020065 struct mutex root_setup_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -070066
67 /* info for packet signing */
68 int sign_wanted; /* 1=Server needs signed packets */
69 int sign_active; /* 0=don't do signing, 1=do */
70 char sign_root[8]; /* generated from password and encr. key */
71 char sign_last[16];
72
73 /* Authentication info: NDS or BINDERY, username */
74 struct {
75 int auth_type;
76 size_t object_name_len;
77 void* object_name;
78 int object_type;
79 } auth;
80 /* Password info */
81 struct {
82 size_t len;
83 void* data;
84 } priv;
Petr Vandrovec2e54eb92010-09-27 01:47:33 +020085 struct rw_semaphore auth_rwsem;
Linus Torvalds1da177e2005-04-16 15:20:36 -070086
87 /* nls info: codepage for volume and charset for I/O */
88 struct nls_table *nls_vol;
89 struct nls_table *nls_io;
90
91 /* maximum age in jiffies */
Petr Vandrovec2e54eb92010-09-27 01:47:33 +020092 atomic_t dentry_ttl;
Linus Torvalds1da177e2005-04-16 15:20:36 -070093
94 /* miscellaneous */
95 unsigned int flags;
96
97 spinlock_t requests_lock; /* Lock accesses to tx.requests, tx.creq and rcv.creq when STREAM mode */
98
99 void (*data_ready)(struct sock* sk, int len);
100 void (*error_report)(struct sock* sk);
101 void (*write_space)(struct sock* sk); /* STREAM mode only */
102 struct {
103 struct work_struct tq; /* STREAM/DGRAM: data/error ready */
104 struct ncp_request_reply* creq; /* STREAM/DGRAM: awaiting reply from this request */
Ingo Molnar8e3f9042006-03-23 03:00:43 -0800105 struct mutex creq_mutex; /* DGRAM only: lock accesses to rcv.creq */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106
107 unsigned int state; /* STREAM only: receiver state */
108 struct {
Eric Dumazetbc105022010-06-03 03:21:52 -0700109 __u32 magic __packed;
110 __u32 len __packed;
111 __u16 type __packed;
112 __u16 p1 __packed;
113 __u16 p2 __packed;
114 __u16 p3 __packed;
115 __u16 type2 __packed;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 } buf; /* STREAM only: temporary buffer */
117 unsigned char* ptr; /* STREAM only: pointer to data */
118 size_t len; /* STREAM only: length of data to receive */
119 } rcv;
120 struct {
121 struct list_head requests; /* STREAM only: queued requests */
122 struct work_struct tq; /* STREAM only: transmitter ready */
123 struct ncp_request_reply* creq; /* STREAM only: currently transmitted entry */
124 } tx;
125 struct timer_list timeout_tm; /* DGRAM only: timeout timer */
126 struct work_struct timeout_tq; /* DGRAM only: associated queue, we run timers from process context */
127 int timeout_last; /* DGRAM only: current timeout length */
128 int timeout_retries; /* DGRAM only: retries left */
129 struct {
130 size_t len;
131 __u8 data[128];
132 } unexpected_packet;
Jens Axboef1970c72010-04-22 12:31:11 +0200133 struct backing_dev_info bdi;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134};
135
David Howellsc4028952006-11-22 14:57:56 +0000136extern void ncp_tcp_rcv_proc(struct work_struct *work);
137extern void ncp_tcp_tx_proc(struct work_struct *work);
138extern void ncpdgram_rcv_proc(struct work_struct *work);
139extern void ncpdgram_timeout_proc(struct work_struct *work);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140extern void ncpdgram_timeout_call(unsigned long server);
141extern void ncp_tcp_data_ready(struct sock* sk, int len);
142extern void ncp_tcp_write_space(struct sock* sk);
143extern void ncp_tcp_error_report(struct sock* sk);
144
145#define NCP_FLAG_UTF8 1
146
147#define NCP_CLR_FLAG(server, flag) ((server)->flags &= ~(flag))
148#define NCP_SET_FLAG(server, flag) ((server)->flags |= (flag))
149#define NCP_IS_FLAG(server, flag) ((server)->flags & (flag))
150
151static inline int ncp_conn_valid(struct ncp_server *server)
152{
153 return ((server->conn_status & 0x11) == 0);
154}
155
156static inline void ncp_invalidate_conn(struct ncp_server *server)
157{
158 server->conn_status |= 0x01;
159}
160
161#endif /* __KERNEL__ */
162
163#endif
164