From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- fs/smb/server/transport_rdma.h | 69 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 69 insertions(+) create mode 100644 fs/smb/server/transport_rdma.h (limited to 'fs/smb/server/transport_rdma.h') diff --git a/fs/smb/server/transport_rdma.h b/fs/smb/server/transport_rdma.h new file mode 100644 index 000000000..77aee4e5c --- /dev/null +++ b/fs/smb/server/transport_rdma.h @@ -0,0 +1,69 @@ +/* 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__ */ -- cgit v1.2.3