70 lines
1.9 KiB
C
70 lines
1.9 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||
|
|
/*
|
||
|
|
* Copyright (C) 2017, Microsoft Corporation.
|
||
|
|
* Copyright (C) 2018, LG Electronics.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef __KSMBD_TRANSPORT_RDMA_H__
|
||
|
|
#define __KSMBD_TRANSPORT_RDMA_H__
|
||
|
|
|
||
|
|
#define SMBD_DEFAULT_IOSIZE (8 * 1024 * 1024)
|
||
|
|
#define SMBD_MIN_IOSIZE (512 * 1024)
|
||
|
|
#define SMBD_MAX_IOSIZE (16 * 1024 * 1024)
|
||
|
|
|
||
|
|
/* SMB DIRECT negotiation request packet [MS-SMBD] 2.2.1 */
|
||
|
|
struct smb_direct_negotiate_req {
|
||
|
|
__le16 min_version;
|
||
|
|
__le16 max_version;
|
||
|
|
__le16 reserved;
|
||
|
|
__le16 credits_requested;
|
||
|
|
__le32 preferred_send_size;
|
||
|
|
__le32 max_receive_size;
|
||
|
|
__le32 max_fragmented_size;
|
||
|
|
} __packed;
|
||
|
|
|
||
|
|
/* SMB DIRECT negotiation response packet [MS-SMBD] 2.2.2 */
|
||
|
|
struct smb_direct_negotiate_resp {
|
||
|
|
__le16 min_version;
|
||
|
|
__le16 max_version;
|
||
|
|
__le16 negotiated_version;
|
||
|
|
__le16 reserved;
|
||
|
|
__le16 credits_requested;
|
||
|
|
__le16 credits_granted;
|
||
|
|
__le32 status;
|
||
|
|
__le32 max_readwrite_size;
|
||
|
|
__le32 preferred_send_size;
|
||
|
|
__le32 max_receive_size;
|
||
|
|
__le32 max_fragmented_size;
|
||
|
|
} __packed;
|
||
|
|
|
||
|
|
#define SMB_DIRECT_RESPONSE_REQUESTED 0x0001
|
||
|
|
|
||
|
|
/* SMB DIRECT data transfer packet with payload [MS-SMBD] 2.2.3 */
|
||
|
|
struct smb_direct_data_transfer {
|
||
|
|
__le16 credits_requested;
|
||
|
|
__le16 credits_granted;
|
||
|
|
__le16 flags;
|
||
|
|
__le16 reserved;
|
||
|
|
__le32 remaining_data_length;
|
||
|
|
__le32 data_offset;
|
||
|
|
__le32 data_length;
|
||
|
|
__le32 padding;
|
||
|
|
__u8 buffer[];
|
||
|
|
} __packed;
|
||
|
|
|
||
|
|
#ifdef CONFIG_SMB_SERVER_SMBDIRECT
|
||
|
|
int ksmbd_rdma_init(void);
|
||
|
|
void ksmbd_rdma_destroy(void);
|
||
|
|
bool ksmbd_rdma_capable_netdev(struct net_device *netdev);
|
||
|
|
void init_smbd_max_io_size(unsigned int sz);
|
||
|
|
unsigned int get_smbd_max_read_write_size(void);
|
||
|
|
#else
|
||
|
|
static inline int ksmbd_rdma_init(void) { return 0; }
|
||
|
|
static inline int ksmbd_rdma_destroy(void) { return 0; }
|
||
|
|
static inline bool ksmbd_rdma_capable_netdev(struct net_device *netdev) { return false; }
|
||
|
|
static inline void init_smbd_max_io_size(unsigned int sz) { }
|
||
|
|
static inline unsigned int get_smbd_max_read_write_size(void) { return 0; }
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /* __KSMBD_TRANSPORT_RDMA_H__ */
|