1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright (C) 2017, Microsoft Corporation.
4 * Copyright (C) 2018, LG Electronics.
7 #ifndef __KSMBD_TRANSPORT_RDMA_H__
8 #define __KSMBD_TRANSPORT_RDMA_H__
10 /* SMB DIRECT negotiation request packet [MS-SMBD] 2.2.1 */
11 struct smb_direct_negotiate_req {
15 __le16 credits_requested;
16 __le32 preferred_send_size;
17 __le32 max_receive_size;
18 __le32 max_fragmented_size;
21 /* SMB DIRECT negotiation response packet [MS-SMBD] 2.2.2 */
22 struct smb_direct_negotiate_resp {
25 __le16 negotiated_version;
27 __le16 credits_requested;
28 __le16 credits_granted;
30 __le32 max_readwrite_size;
31 __le32 preferred_send_size;
32 __le32 max_receive_size;
33 __le32 max_fragmented_size;
36 #define SMB_DIRECT_RESPONSE_REQUESTED 0x0001
38 /* SMB DIRECT data transfer packet with payload [MS-SMBD] 2.2.3 */
39 struct smb_direct_data_transfer {
40 __le16 credits_requested;
41 __le16 credits_granted;
44 __le32 remaining_data_length;
51 #ifdef CONFIG_SMB_SERVER_SMBDIRECT
52 int ksmbd_rdma_init(void);
53 void ksmbd_rdma_destroy(void);
54 bool ksmbd_rdma_capable_netdev(struct net_device *netdev);
56 static inline int ksmbd_rdma_init(void) { return 0; }
57 static inline int ksmbd_rdma_destroy(void) { return 0; }
58 static inline bool ksmbd_rdma_capable_netdev(struct net_device *netdev) { return false; }
61 #endif /* __KSMBD_TRANSPORT_RDMA_H__ */