1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2018 Samsung Electronics Co., Ltd.
*/
#ifndef __KSMBD_CONNECTION_H__
#define __KSMBD_CONNECTION_H__
#include <linux/list.h>
#include <linux/ip.h>
#include <net/sock.h>
#include <net/tcp.h>
#include <net/inet_connection_sock.h>
#include <net/request_sock.h>
#include <linux/kthread.h>
#include <linux/nls.h>
#include "smb_common.h"
#include "ksmbd_work.h"
#define KSMBD_SOCKET_BACKLOG 16
/*
* WARNING
*
* This is nothing but a HACK. Session status should move to channel
* or to session. As of now we have 1 tcp_conn : 1 ksmbd_session, but
* we need to change it to 1 tcp_conn : N ksmbd_sessions.
*/
enum {
KSMBD_SESS_NEW = 0,
KSMBD_SESS_GOOD,
KSMBD_SESS_EXITING,
KSMBD_SESS_NEED_RECONNECT,
KSMBD_SESS_NEED_NEGOTIATE
};
struct ksmbd_stats {
atomic_t open_files_count;
atomic64_t request_served;
};
struct ksmbd_transport;
struct ksmbd_conn {
struct smb_version_values *vals;
struct smb_version_ops *ops;
struct smb_version_cmds *cmds;
unsigned int max_cmds;
struct mutex srv_mutex;
int status;
unsigned int cli_cap;
char *request_buf;
struct ksmbd_transport *transport;
struct nls_table *local_nls;
struct list_head conns_list;
/* smb session 1 per user */
struct list_head sessions;
unsigned long last_active;
/* How many request are running currently */
atomic_t req_running;
/* References which are made for this Server object*/
atomic_t r_count;
unsigned short total_credits;
unsigned short max_credits;
spinlock_t credits_lock;
wait_queue_head_t req_running_q;
/* Lock to protect requests list*/
spinlock_t request_lock;
struct list_head requests;
struct list_head async_requests;
int connection_type;
struct ksmbd_stats stats;
char ClientGUID[SMB2_CLIENT_GUID_SIZE];
struct ntlmssp_auth ntlmssp;
spinlock_t llist_lock;
struct list_head lock_list;
struct preauth_integrity_info *preauth_info;
bool need_neg;
unsigned int auth_mechs;
unsigned int preferred_auth_mech;
bool sign;
bool use_spnego:1;
__u16 cli_sec_mode;
__u16 srv_sec_mode;
/* dialect index that server chose */
__u16 dialect;
char *mechToken;
struct ksmbd_conn_ops *conn_ops;
/* Preauth Session Table */
struct list_head preauth_sess_table;
struct sockaddr_storage peer_addr;
/* Identifier for async message */
struct ida async_ida;
__le16 cipher_type;
__le16 compress_algorithm;
bool posix_ext_supported;
bool signing_negotiated;
__le16 signing_algorithm;
bool binding;
};
struct ksmbd_conn_ops {
int (*process_fn)(struct ksmbd_conn *conn);
int (*terminate_fn)(struct ksmbd_conn *conn);
};
struct ksmbd_transport_ops {
int (*prepare)(struct ksmbd_transport *t);
void (*disconnect)(struct ksmbd_transport *t);
int (*read)(struct ksmbd_transport *t, char *buf, unsigned int size);
int (*writev)(struct ksmbd_transport *t, struct kvec *iovs, int niov,
int size, bool need_invalidate_rkey,
unsigned int remote_key);
int (*rdma_read)(struct ksmbd_transport *t, void *buf, unsigned int len,
u32 remote_key, u64 remote_offset, u32 remote_len);
int (*rdma_write)(struct ksmbd_transport *t, void *buf,
unsigned int len, u32 remote_key, u64 remote_offset,
u32 remote_len);
};
struct ksmbd_transport {
struct ksmbd_conn *conn;
struct ksmbd_transport_ops *ops;
struct task_struct *handler;
};
#define KSMBD_TCP_RECV_TIMEOUT (7 * HZ)
#define KSMBD_TCP_SEND_TIMEOUT (5 * HZ)
#define KSMBD_TCP_PEER_SOCKADDR(c) ((struct sockaddr *)&((c)->peer_addr))
extern struct list_head conn_list;
extern rwlock_t conn_list_lock;
bool ksmbd_conn_alive(struct ksmbd_conn *conn);
void ksmbd_conn_wait_idle(struct ksmbd_conn *conn);
struct ksmbd_conn *ksmbd_conn_alloc(void);
void ksmbd_conn_free(struct ksmbd_conn *conn);
bool ksmbd_conn_lookup_dialect(struct ksmbd_conn *c);
int ksmbd_conn_write(struct ksmbd_work *work);
int ksmbd_conn_rdma_read(struct ksmbd_conn *conn, void *buf,
unsigned int buflen, u32 remote_key, u64 remote_offset,
u32 remote_len);
int ksmbd_conn_rdma_write(struct ksmbd_conn *conn, void *buf,
unsigned int buflen, u32 remote_key, u64 remote_offset,
u32 remote_len);
void ksmbd_conn_enqueue_request(struct ksmbd_work *work);
int ksmbd_conn_try_dequeue_request(struct ksmbd_work *work);
void ksmbd_conn_init_server_callbacks(struct ksmbd_conn_ops *ops);
int ksmbd_conn_handler_loop(void *p);
int ksmbd_conn_transport_init(void);
void ksmbd_conn_transport_destroy(void);
/*
* WARNING
*
* This is a hack. We will move status to a proper place once we land
* a multi-sessions support.
*/
static inline bool ksmbd_conn_good(struct ksmbd_work *work)
{
return work->conn->status == KSMBD_SESS_GOOD;
}
static inline bool ksmbd_conn_need_negotiate(struct ksmbd_work *work)
{
return work->conn->status == KSMBD_SESS_NEED_NEGOTIATE;
}
static inline bool ksmbd_conn_need_reconnect(struct ksmbd_work *work)
{
return work->conn->status == KSMBD_SESS_NEED_RECONNECT;
}
static inline bool ksmbd_conn_exiting(struct ksmbd_work *work)
{
return work->conn->status == KSMBD_SESS_EXITING;
}
static inline void ksmbd_conn_set_good(struct ksmbd_work *work)
{
work->conn->status = KSMBD_SESS_GOOD;
}
static inline void ksmbd_conn_set_need_negotiate(struct ksmbd_work *work)
{
work->conn->status = KSMBD_SESS_NEED_NEGOTIATE;
}
static inline void ksmbd_conn_set_need_reconnect(struct ksmbd_work *work)
{
work->conn->status = KSMBD_SESS_NEED_RECONNECT;
}
static inline void ksmbd_conn_set_exiting(struct ksmbd_work *work)
{
work->conn->status = KSMBD_SESS_EXITING;
}
#endif /* __CONNECTION_H__ */
|
