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6#ifndef __KSMBD_CONNECTION_H__
7#define __KSMBD_CONNECTION_H__
8
9#include <linux/list.h>
10#include <linux/ip.h>
11#include <net/sock.h>
12#include <net/tcp.h>
13#include <net/inet_connection_sock.h>
14#include <net/request_sock.h>
15#include <linux/kthread.h>
16#include <linux/nls.h>
17
18#include "smb_common.h"
19#include "ksmbd_work.h"
20
21#define KSMBD_SOCKET_BACKLOG 16
22
23
24
25
26
27
28
29
30enum {
31 KSMBD_SESS_NEW = 0,
32 KSMBD_SESS_GOOD,
33 KSMBD_SESS_EXITING,
34 KSMBD_SESS_NEED_RECONNECT,
35 KSMBD_SESS_NEED_NEGOTIATE
36};
37
38struct ksmbd_stats {
39 atomic_t open_files_count;
40 atomic64_t request_served;
41};
42
43struct ksmbd_transport;
44
45struct ksmbd_conn {
46 struct smb_version_values *vals;
47 struct smb_version_ops *ops;
48 struct smb_version_cmds *cmds;
49 unsigned int max_cmds;
50 struct mutex srv_mutex;
51 int status;
52 unsigned int cli_cap;
53 char *request_buf;
54 struct ksmbd_transport *transport;
55 struct nls_table *local_nls;
56 struct list_head conns_list;
57
58 struct list_head sessions;
59 unsigned long last_active;
60
61 atomic_t req_running;
62
63 atomic_t r_count;
64 unsigned short total_credits;
65 unsigned short max_credits;
66 spinlock_t credits_lock;
67 wait_queue_head_t req_running_q;
68
69 spinlock_t request_lock;
70 struct list_head requests;
71 struct list_head async_requests;
72 int connection_type;
73 struct ksmbd_stats stats;
74 char ClientGUID[SMB2_CLIENT_GUID_SIZE];
75 union {
76
77 struct trans_state *recent_trans;
78
79 char *ntlmssp_cryptkey;
80 };
81
82 spinlock_t llist_lock;
83 struct list_head lock_list;
84
85 struct preauth_integrity_info *preauth_info;
86
87 bool need_neg;
88 unsigned int auth_mechs;
89 unsigned int preferred_auth_mech;
90 bool sign;
91 bool use_spnego:1;
92 __u16 cli_sec_mode;
93 __u16 srv_sec_mode;
94
95 __u16 dialect;
96
97 char *mechToken;
98
99 struct ksmbd_conn_ops *conn_ops;
100
101
102 struct list_head preauth_sess_table;
103
104 struct sockaddr_storage peer_addr;
105
106
107 struct ida async_ida;
108
109 __le16 cipher_type;
110 __le16 compress_algorithm;
111 bool posix_ext_supported;
112 bool signing_negotiated;
113 __le16 signing_algorithm;
114 bool binding;
115};
116
117struct ksmbd_conn_ops {
118 int (*process_fn)(struct ksmbd_conn *conn);
119 int (*terminate_fn)(struct ksmbd_conn *conn);
120};
121
122struct ksmbd_transport_ops {
123 int (*prepare)(struct ksmbd_transport *t);
124 void (*disconnect)(struct ksmbd_transport *t);
125 int (*read)(struct ksmbd_transport *t, char *buf, unsigned int size);
126 int (*writev)(struct ksmbd_transport *t, struct kvec *iovs, int niov,
127 int size, bool need_invalidate_rkey,
128 unsigned int remote_key);
129 int (*rdma_read)(struct ksmbd_transport *t, void *buf, unsigned int len,
130 u32 remote_key, u64 remote_offset, u32 remote_len);
131 int (*rdma_write)(struct ksmbd_transport *t, void *buf,
132 unsigned int len, u32 remote_key, u64 remote_offset,
133 u32 remote_len);
134};
135
136struct ksmbd_transport {
137 struct ksmbd_conn *conn;
138 struct ksmbd_transport_ops *ops;
139 struct task_struct *handler;
140};
141
142#define KSMBD_TCP_RECV_TIMEOUT (7 * HZ)
143#define KSMBD_TCP_SEND_TIMEOUT (5 * HZ)
144#define KSMBD_TCP_PEER_SOCKADDR(c) ((struct sockaddr *)&((c)->peer_addr))
145
146extern struct list_head conn_list;
147extern rwlock_t conn_list_lock;
148
149bool ksmbd_conn_alive(struct ksmbd_conn *conn);
150void ksmbd_conn_wait_idle(struct ksmbd_conn *conn);
151struct ksmbd_conn *ksmbd_conn_alloc(void);
152void ksmbd_conn_free(struct ksmbd_conn *conn);
153bool ksmbd_conn_lookup_dialect(struct ksmbd_conn *c);
154int ksmbd_conn_write(struct ksmbd_work *work);
155int ksmbd_conn_rdma_read(struct ksmbd_conn *conn, void *buf,
156 unsigned int buflen, u32 remote_key, u64 remote_offset,
157 u32 remote_len);
158int ksmbd_conn_rdma_write(struct ksmbd_conn *conn, void *buf,
159 unsigned int buflen, u32 remote_key, u64 remote_offset,
160 u32 remote_len);
161void ksmbd_conn_enqueue_request(struct ksmbd_work *work);
162int ksmbd_conn_try_dequeue_request(struct ksmbd_work *work);
163void ksmbd_conn_init_server_callbacks(struct ksmbd_conn_ops *ops);
164int ksmbd_conn_handler_loop(void *p);
165int ksmbd_conn_transport_init(void);
166void ksmbd_conn_transport_destroy(void);
167
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171
172
173
174static inline bool ksmbd_conn_good(struct ksmbd_work *work)
175{
176 return work->conn->status == KSMBD_SESS_GOOD;
177}
178
179static inline bool ksmbd_conn_need_negotiate(struct ksmbd_work *work)
180{
181 return work->conn->status == KSMBD_SESS_NEED_NEGOTIATE;
182}
183
184static inline bool ksmbd_conn_need_reconnect(struct ksmbd_work *work)
185{
186 return work->conn->status == KSMBD_SESS_NEED_RECONNECT;
187}
188
189static inline bool ksmbd_conn_exiting(struct ksmbd_work *work)
190{
191 return work->conn->status == KSMBD_SESS_EXITING;
192}
193
194static inline void ksmbd_conn_set_good(struct ksmbd_work *work)
195{
196 work->conn->status = KSMBD_SESS_GOOD;
197}
198
199static inline void ksmbd_conn_set_need_negotiate(struct ksmbd_work *work)
200{
201 work->conn->status = KSMBD_SESS_NEED_NEGOTIATE;
202}
203
204static inline void ksmbd_conn_set_need_reconnect(struct ksmbd_work *work)
205{
206 work->conn->status = KSMBD_SESS_NEED_RECONNECT;
207}
208
209static inline void ksmbd_conn_set_exiting(struct ksmbd_work *work)
210{
211 work->conn->status = KSMBD_SESS_EXITING;
212}
213#endif
214
