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db223a590d
linux-next/fs/cifs
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Long Li db223a590d CIFS: SMBD: Upper layer performs SMB write via RDMA read through memory registration 
When sending I/O, if size is larger than rdma_readwrite_threshold we prepare
to send SMB write packet for a RDMA read via memory registration. The actual
I/O is done by remote peer through local RDMA hardware. Modify the relevant
fields in the packet accordingly, and append a smbd_buffer_descriptor_v1 to
the end of the SMB write packet.

On write I/O finish, deregister the memory region if this was for a RDMA read.
If remote invalidation is not used, the call to smbd_deregister_mr will do
local invalidation and possibly wait. Memory region is normally deregistered
in MID callback as soon as it's used. There are situations where the MID may
not be created on I/O failure, under which memory region is deregistered when
write data context is released.

Signed-off-by: Long Li <longli@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
2018-01-24 19:49:07 -06:00
..
asn1.c [CIFS] cifs: Rename cERROR and cFYI to cifs_dbg 2013-05-04 22:17:23 -05:00
cache.c fscache: remove unused ->now_uncached callback 2017-09-06 17:27:26 -07:00
cifs_debug.c CIFS: SMBD: export protocol initial values 2018-01-24 19:49:06 -06:00
cifs_debug.h lib: update single-char callers of strtobool() 2016-03-17 15:09:34 -07:00
cifs_dfs_ref.c CIFS: add build_path_from_dentry_optional_prefix() 2017-03-01 22:26:10 -06:00
cifs_fs_sb.h Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00
cifs_ioctl.h Enable previous version support 2016-10-13 19:48:11 -05:00
cifs_spnego.c cifs: Create dedicated keyring for spnego operations 2016-05-19 21:56:30 -05:00
cifs_spnego.h [CIFS] Rename three structures to avoid camel case 2011-05-27 04:34:02 +00:00
cifs_unicode.c [SMB3] Remove ifdef since SMB3 (and later) now STRONGLY preferred 2017-07-08 18:57:07 -05:00
cifs_unicode.h [SMB3] Remove ifdef since SMB3 (and later) now STRONGLY preferred 2017-07-08 18:57:07 -05:00
cifs_uniupr.h
cifsacl.c cifs: cifsacl: Use a temporary ops variable to reduce code length 2017-05-12 19:45:18 -05:00
cifsacl.h cifs: fix SID binary to string conversion 2012-12-11 11:48:49 -06:00
cifsencrypt.c fs: cifs: replace CURRENT_TIME by other appropriate apis 2017-05-08 17:15:15 -07:00
cifsfs.c CIFS: SMBD: Add rdma mount option 2018-01-24 19:49:05 -06:00
cifsfs.h Update version of cifs module 2017-09-17 23:10:48 -05:00
cifsglob.h CIFS: SMBD: Upper layer performs SMB write via RDMA read through memory registration 2018-01-24 19:49:07 -06:00
cifspdu.h CIFS: move DFS response parsing out of SMB1 code 2017-03-01 22:26:10 -06:00
cifsproto.h cifs: Add smb2_send_recv 2018-01-24 19:49:04 -06:00
cifssmb.c CIFS: SMBD: Upper layer performs SMB write via RDMA read through memory registration 2018-01-24 19:49:07 -06:00
connect.c CIFS: SMBD: Upper layer receives data via RDMA receive 2018-01-24 19:49:06 -06:00
dir.c cifs: check MaxPathNameComponentLength != 0 before using it 2017-10-30 02:11:38 -05:00
dns_resolve.c cifs: fix composing of mount options for DFS referrals 2013-05-24 13:08:31 -05:00
dns_resolve.h
export.c [CIFS] cifs: Rename cERROR and cFYI to cifs_dbg 2013-05-04 22:17:23 -05:00
file.c cifs: Fix missing put_xid in cifs_file_strict_mmap 2018-01-24 19:49:06 -06:00
fscache.c NFS client updates for Linux 3.13 2013-11-08 05:57:46 +09:00
fscache.h CIFS: FS-Cache: Uncache unread pages in cifs_readpages() before freeing them 2013-09-18 10:17:03 -05:00
inode.c Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00
ioctl.c [SMB3] Remove ifdef since SMB3 (and later) now STRONGLY preferred 2017-07-08 18:57:07 -05:00
Kconfig cifs: fix build errors for SMB_DIRECT 2018-01-24 19:49:06 -06:00
link.c [SMB3] Remove ifdef since SMB3 (and later) now STRONGLY preferred 2017-07-08 18:57:07 -05:00
Makefile CIFS: SMBD: Establish SMB Direct connection 2018-01-24 19:49:05 -06:00
misc.c [SMB3] Remove ifdef since SMB3 (and later) now STRONGLY preferred 2017-07-08 18:57:07 -05:00
netmisc.c cifs: small underflow in cnvrtDosUnixTm() 2017-05-02 14:57:34 -05:00
nterr.c CIFS: Rename 7 error codes to NT_ style 2012-07-24 10:25:10 -05:00
nterr.h CIFS: Rename 7 error codes to NT_ style 2012-07-24 10:25:10 -05:00
ntlmssp.h cifs: dynamic allocation of ntlmssp blob 2016-06-23 23:45:07 -05:00
readdir.c cifs: initialize file_info_lock 2017-01-14 14:58:29 -06:00
rfc1002pdu.h
sess.c smb2: Enforce sec= mount option 2017-03-02 23:13:37 -06:00
smb1ops.c CIFS: Improve readdir verbosity 2017-06-20 19:13:47 -05:00
smb2file.c CIFS: add use_ipc flag to SMB2_ioctl() 2017-03-01 22:26:11 -06:00
smb2glob.h CIFS: Separate SMB2 header structure 2017-02-01 16:46:34 -06:00
smb2inode.c Do not send SMB3 SET_INFO request if nothing is changing 2016-10-13 19:46:51 -05:00
smb2maperror.c cifs: handle large EA requests more gracefully in smb2+ 2017-10-18 11:52:39 -05:00
smb2misc.c cifs: remove rfc1002 header from smb2_oplock_break we get from server 2018-01-24 19:49:05 -06:00
smb2ops.c CIFS: SMBD: Set SMB Direct maximum read or write size for I/O 2018-01-24 19:49:06 -06:00
smb2pdu.c CIFS: SMBD: Upper layer performs SMB write via RDMA read through memory registration 2018-01-24 19:49:07 -06:00
smb2pdu.h cifs: remove rfc1002 header from smb2_lease_ack 2018-01-24 19:49:05 -06:00
smb2proto.h cifs: handle large EA requests more gracefully in smb2+ 2017-10-18 11:52:39 -05:00
smb2status.h CIFS: Add SMB2 status codes 2012-07-24 10:25:13 -05:00
smb2transport.c Fix encryption labels and lengths for SMB3.1.1 2017-10-18 11:52:39 -05:00
smbdirect.c CIFS: SMBD: Implement RDMA memory registration 2018-01-24 19:49:06 -06:00
smbdirect.h CIFS: SMBD: Implement RDMA memory registration 2018-01-24 19:49:06 -06:00
smbencrypt.c cifs: Fix smbencrypt() to stop pointing a scatterlist at the stack 2016-12-14 01:44:16 -06:00
smberr.h
smbfsctl.h [SMB3] Send durable handle v2 contexts when use of persistent handles required 2015-11-03 09:26:27 -06:00
transport.c CIFS: SMBD: Upper layer sends data via RDMA send 2018-01-24 19:49:06 -06:00
winucase.c [CIFS] quiet sparse compile warning 2013-09-08 14:54:24 -05:00
xattr.c Rename superblock flags (MS_xyz -> SB_xyz) 2017-11-27 13:05:09 -08:00