Commit 00fab6cf authored by Stefan Metzmacher's avatar Stefan Metzmacher Committed by Steve French
Browse files

smb: smbdirect: add smbdirect_pdu.h with protocol definitions 



This is just a start moving into a common smbdirect layer.

It will be used in the next commits...

Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: Hyunchul Lee <hyc.lee@gmail.com>
Cc: Meetakshi Setiya <meetakshisetiyaoss@gmail.com>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Signed-off-by: default avatarStefan Metzmacher <metze@samba.org>
Signed-off-by: default avatarSteve French <stfrench@microsoft.com>
parent 6d9b5f6b

fs/smb/common/smbdirect/smbdirect_pdu.h

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/* SPDX-License-Identifier: GPL-2.0-or-later */

/*

 *   Copyright (c) 2017 Stefan Metzmacher

 */



#ifndef __FS_SMB_COMMON_SMBDIRECT_SMBDIRECT_PDU_H__

#define __FS_SMB_COMMON_SMBDIRECT_SMBDIRECT_PDU_H__



#define SMBDIRECT_V1 0x0100



/* SMBD negotiation request packet [MS-SMBD] 2.2.1 */

struct smbdirect_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;



/* SMBD negotiation response packet [MS-SMBD] 2.2.2 */

struct smbdirect_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 SMBDIRECT_DATA_MIN_HDR_SIZE 0x14

#define SMBDIRECT_DATA_OFFSET       0x18



#define SMBDIRECT_FLAG_RESPONSE_REQUESTED 0x0001



/* SMBD data transfer packet with payload [MS-SMBD] 2.2.3 */

struct smbdirect_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;



#endif /* __FS_SMB_COMMON_SMBDIRECT_SMBDIRECT_PDU_H__ */