1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2016 Namjae Jeon <linkinjeon@kernel.org>
4 * Copyright (C) 2018 Samsung Electronics Co., Ltd.
7 #include <linux/slab.h>
11 #include "connection.h"
12 #include "smb_common.h"
15 static struct smb_version_values smb21_server_values = {
16 .version_string = SMB21_VERSION_STRING,
17 .protocol_id = SMB21_PROT_ID,
18 .capabilities = SMB2_GLOBAL_CAP_LARGE_MTU,
19 .max_read_size = SMB21_DEFAULT_IOSIZE,
20 .max_write_size = SMB21_DEFAULT_IOSIZE,
21 .max_trans_size = SMB21_DEFAULT_IOSIZE,
23 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
24 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
25 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
26 .header_size = sizeof(struct smb2_hdr),
27 .max_header_size = MAX_SMB2_HDR_SIZE,
28 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
29 .lock_cmd = SMB2_LOCK,
31 .cap_nt_find = SMB2_NT_FIND,
32 .cap_large_files = SMB2_LARGE_FILES,
33 .create_lease_size = sizeof(struct create_lease),
34 .create_durable_size = sizeof(struct create_durable_rsp),
35 .create_mxac_size = sizeof(struct create_mxac_rsp),
36 .create_disk_id_size = sizeof(struct create_disk_id_rsp),
37 .create_posix_size = sizeof(struct create_posix_rsp),
40 static struct smb_version_values smb30_server_values = {
41 .version_string = SMB30_VERSION_STRING,
42 .protocol_id = SMB30_PROT_ID,
43 .capabilities = SMB2_GLOBAL_CAP_LARGE_MTU,
44 .max_read_size = SMB3_DEFAULT_IOSIZE,
45 .max_write_size = SMB3_DEFAULT_IOSIZE,
46 .max_trans_size = SMB3_DEFAULT_TRANS_SIZE,
48 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
49 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
50 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
51 .header_size = sizeof(struct smb2_hdr),
52 .max_header_size = MAX_SMB2_HDR_SIZE,
53 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
54 .lock_cmd = SMB2_LOCK,
56 .cap_nt_find = SMB2_NT_FIND,
57 .cap_large_files = SMB2_LARGE_FILES,
58 .create_lease_size = sizeof(struct create_lease_v2),
59 .create_durable_size = sizeof(struct create_durable_rsp),
60 .create_durable_v2_size = sizeof(struct create_durable_v2_rsp),
61 .create_mxac_size = sizeof(struct create_mxac_rsp),
62 .create_disk_id_size = sizeof(struct create_disk_id_rsp),
63 .create_posix_size = sizeof(struct create_posix_rsp),
66 static struct smb_version_values smb302_server_values = {
67 .version_string = SMB302_VERSION_STRING,
68 .protocol_id = SMB302_PROT_ID,
69 .capabilities = SMB2_GLOBAL_CAP_LARGE_MTU,
70 .max_read_size = SMB3_DEFAULT_IOSIZE,
71 .max_write_size = SMB3_DEFAULT_IOSIZE,
72 .max_trans_size = SMB3_DEFAULT_TRANS_SIZE,
74 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
75 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
76 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
77 .header_size = sizeof(struct smb2_hdr),
78 .max_header_size = MAX_SMB2_HDR_SIZE,
79 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
80 .lock_cmd = SMB2_LOCK,
82 .cap_nt_find = SMB2_NT_FIND,
83 .cap_large_files = SMB2_LARGE_FILES,
84 .create_lease_size = sizeof(struct create_lease_v2),
85 .create_durable_size = sizeof(struct create_durable_rsp),
86 .create_durable_v2_size = sizeof(struct create_durable_v2_rsp),
87 .create_mxac_size = sizeof(struct create_mxac_rsp),
88 .create_disk_id_size = sizeof(struct create_disk_id_rsp),
89 .create_posix_size = sizeof(struct create_posix_rsp),
92 static struct smb_version_values smb311_server_values = {
93 .version_string = SMB311_VERSION_STRING,
94 .protocol_id = SMB311_PROT_ID,
95 .capabilities = SMB2_GLOBAL_CAP_LARGE_MTU,
96 .max_read_size = SMB3_DEFAULT_IOSIZE,
97 .max_write_size = SMB3_DEFAULT_IOSIZE,
98 .max_trans_size = SMB3_DEFAULT_TRANS_SIZE,
100 .exclusive_lock_type = SMB2_LOCKFLAG_EXCLUSIVE,
101 .shared_lock_type = SMB2_LOCKFLAG_SHARED,
102 .unlock_lock_type = SMB2_LOCKFLAG_UNLOCK,
103 .header_size = sizeof(struct smb2_hdr),
104 .max_header_size = MAX_SMB2_HDR_SIZE,
105 .read_rsp_size = sizeof(struct smb2_read_rsp) - 1,
106 .lock_cmd = SMB2_LOCK,
108 .cap_nt_find = SMB2_NT_FIND,
109 .cap_large_files = SMB2_LARGE_FILES,
110 .create_lease_size = sizeof(struct create_lease_v2),
111 .create_durable_size = sizeof(struct create_durable_rsp),
112 .create_durable_v2_size = sizeof(struct create_durable_v2_rsp),
113 .create_mxac_size = sizeof(struct create_mxac_rsp),
114 .create_disk_id_size = sizeof(struct create_disk_id_rsp),
115 .create_posix_size = sizeof(struct create_posix_rsp),
118 static struct smb_version_ops smb2_0_server_ops = {
119 .get_cmd_val = get_smb2_cmd_val,
120 .init_rsp_hdr = init_smb2_rsp_hdr,
121 .set_rsp_status = set_smb2_rsp_status,
122 .allocate_rsp_buf = smb2_allocate_rsp_buf,
123 .set_rsp_credits = smb2_set_rsp_credits,
124 .check_user_session = smb2_check_user_session,
125 .get_ksmbd_tcon = smb2_get_ksmbd_tcon,
126 .is_sign_req = smb2_is_sign_req,
127 .check_sign_req = smb2_check_sign_req,
128 .set_sign_rsp = smb2_set_sign_rsp
131 static struct smb_version_ops smb3_0_server_ops = {
132 .get_cmd_val = get_smb2_cmd_val,
133 .init_rsp_hdr = init_smb2_rsp_hdr,
134 .set_rsp_status = set_smb2_rsp_status,
135 .allocate_rsp_buf = smb2_allocate_rsp_buf,
136 .set_rsp_credits = smb2_set_rsp_credits,
137 .check_user_session = smb2_check_user_session,
138 .get_ksmbd_tcon = smb2_get_ksmbd_tcon,
139 .is_sign_req = smb2_is_sign_req,
140 .check_sign_req = smb3_check_sign_req,
141 .set_sign_rsp = smb3_set_sign_rsp,
142 .generate_signingkey = ksmbd_gen_smb30_signingkey,
143 .generate_encryptionkey = ksmbd_gen_smb30_encryptionkey,
144 .is_transform_hdr = smb3_is_transform_hdr,
145 .decrypt_req = smb3_decrypt_req,
146 .encrypt_resp = smb3_encrypt_resp
149 static struct smb_version_ops smb3_11_server_ops = {
150 .get_cmd_val = get_smb2_cmd_val,
151 .init_rsp_hdr = init_smb2_rsp_hdr,
152 .set_rsp_status = set_smb2_rsp_status,
153 .allocate_rsp_buf = smb2_allocate_rsp_buf,
154 .set_rsp_credits = smb2_set_rsp_credits,
155 .check_user_session = smb2_check_user_session,
156 .get_ksmbd_tcon = smb2_get_ksmbd_tcon,
157 .is_sign_req = smb2_is_sign_req,
158 .check_sign_req = smb3_check_sign_req,
159 .set_sign_rsp = smb3_set_sign_rsp,
160 .generate_signingkey = ksmbd_gen_smb311_signingkey,
161 .generate_encryptionkey = ksmbd_gen_smb311_encryptionkey,
162 .is_transform_hdr = smb3_is_transform_hdr,
163 .decrypt_req = smb3_decrypt_req,
164 .encrypt_resp = smb3_encrypt_resp
167 static struct smb_version_cmds smb2_0_server_cmds[NUMBER_OF_SMB2_COMMANDS] = {
168 [SMB2_NEGOTIATE_HE] = { .proc = smb2_negotiate_request, },
169 [SMB2_SESSION_SETUP_HE] = { .proc = smb2_sess_setup, },
170 [SMB2_TREE_CONNECT_HE] = { .proc = smb2_tree_connect,},
171 [SMB2_TREE_DISCONNECT_HE] = { .proc = smb2_tree_disconnect,},
172 [SMB2_LOGOFF_HE] = { .proc = smb2_session_logoff,},
173 [SMB2_CREATE_HE] = { .proc = smb2_open},
174 [SMB2_QUERY_INFO_HE] = { .proc = smb2_query_info},
175 [SMB2_QUERY_DIRECTORY_HE] = { .proc = smb2_query_dir},
176 [SMB2_CLOSE_HE] = { .proc = smb2_close},
177 [SMB2_ECHO_HE] = { .proc = smb2_echo},
178 [SMB2_SET_INFO_HE] = { .proc = smb2_set_info},
179 [SMB2_READ_HE] = { .proc = smb2_read},
180 [SMB2_WRITE_HE] = { .proc = smb2_write},
181 [SMB2_FLUSH_HE] = { .proc = smb2_flush},
182 [SMB2_CANCEL_HE] = { .proc = smb2_cancel},
183 [SMB2_LOCK_HE] = { .proc = smb2_lock},
184 [SMB2_IOCTL_HE] = { .proc = smb2_ioctl},
185 [SMB2_OPLOCK_BREAK_HE] = { .proc = smb2_oplock_break},
186 [SMB2_CHANGE_NOTIFY_HE] = { .proc = smb2_notify},
190 * init_smb2_1_server() - initialize a smb server connection with smb2.1
192 * @conn: connection instance
194 void init_smb2_1_server(struct ksmbd_conn *conn)
196 conn->vals = &smb21_server_values;
197 conn->ops = &smb2_0_server_ops;
198 conn->cmds = smb2_0_server_cmds;
199 conn->max_cmds = ARRAY_SIZE(smb2_0_server_cmds);
200 conn->max_credits = SMB2_MAX_CREDITS;
201 conn->signing_algorithm = SIGNING_ALG_HMAC_SHA256_LE;
203 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_LEASES)
204 conn->vals->capabilities |= SMB2_GLOBAL_CAP_LEASING;
208 * init_smb3_0_server() - initialize a smb server connection with smb3.0
210 * @conn: connection instance
212 void init_smb3_0_server(struct ksmbd_conn *conn)
214 conn->vals = &smb30_server_values;
215 conn->ops = &smb3_0_server_ops;
216 conn->cmds = smb2_0_server_cmds;
217 conn->max_cmds = ARRAY_SIZE(smb2_0_server_cmds);
218 conn->max_credits = SMB2_MAX_CREDITS;
219 conn->signing_algorithm = SIGNING_ALG_AES_CMAC_LE;
221 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_LEASES)
222 conn->vals->capabilities |= SMB2_GLOBAL_CAP_LEASING;
224 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION &&
225 conn->cli_cap & SMB2_GLOBAL_CAP_ENCRYPTION)
226 conn->vals->capabilities |= SMB2_GLOBAL_CAP_ENCRYPTION;
228 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL)
229 conn->vals->capabilities |= SMB2_GLOBAL_CAP_MULTI_CHANNEL;
233 * init_smb3_02_server() - initialize a smb server connection with smb3.02
235 * @conn: connection instance
237 void init_smb3_02_server(struct ksmbd_conn *conn)
239 conn->vals = &smb302_server_values;
240 conn->ops = &smb3_0_server_ops;
241 conn->cmds = smb2_0_server_cmds;
242 conn->max_cmds = ARRAY_SIZE(smb2_0_server_cmds);
243 conn->max_credits = SMB2_MAX_CREDITS;
244 conn->signing_algorithm = SIGNING_ALG_AES_CMAC_LE;
246 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_LEASES)
247 conn->vals->capabilities |= SMB2_GLOBAL_CAP_LEASING;
249 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_ENCRYPTION &&
250 conn->cli_cap & SMB2_GLOBAL_CAP_ENCRYPTION)
251 conn->vals->capabilities |= SMB2_GLOBAL_CAP_ENCRYPTION;
253 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL)
254 conn->vals->capabilities |= SMB2_GLOBAL_CAP_MULTI_CHANNEL;
258 * init_smb3_11_server() - initialize a smb server connection with smb3.11
260 * @conn: connection instance
262 int init_smb3_11_server(struct ksmbd_conn *conn)
264 conn->vals = &smb311_server_values;
265 conn->ops = &smb3_11_server_ops;
266 conn->cmds = smb2_0_server_cmds;
267 conn->max_cmds = ARRAY_SIZE(smb2_0_server_cmds);
268 conn->max_credits = SMB2_MAX_CREDITS;
269 conn->signing_algorithm = SIGNING_ALG_AES_CMAC_LE;
271 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB2_LEASES)
272 conn->vals->capabilities |= SMB2_GLOBAL_CAP_LEASING;
274 if (server_conf.flags & KSMBD_GLOBAL_FLAG_SMB3_MULTICHANNEL)
275 conn->vals->capabilities |= SMB2_GLOBAL_CAP_MULTI_CHANNEL;
277 INIT_LIST_HEAD(&conn->preauth_sess_table);
281 void init_smb2_max_read_size(unsigned int sz)
283 sz = clamp_val(sz, SMB3_MIN_IOSIZE, SMB3_MAX_IOSIZE);
284 smb21_server_values.max_read_size = sz;
285 smb30_server_values.max_read_size = sz;
286 smb302_server_values.max_read_size = sz;
287 smb311_server_values.max_read_size = sz;
290 void init_smb2_max_write_size(unsigned int sz)
292 sz = clamp_val(sz, SMB3_MIN_IOSIZE, SMB3_MAX_IOSIZE);
293 smb21_server_values.max_write_size = sz;
294 smb30_server_values.max_write_size = sz;
295 smb302_server_values.max_write_size = sz;
296 smb311_server_values.max_write_size = sz;
299 void init_smb2_max_trans_size(unsigned int sz)
301 sz = clamp_val(sz, SMB3_MIN_IOSIZE, SMB3_MAX_IOSIZE);
302 smb21_server_values.max_trans_size = sz;
303 smb30_server_values.max_trans_size = sz;
304 smb302_server_values.max_trans_size = sz;
305 smb311_server_values.max_trans_size = sz;