AuxXxilium/linux_dsm_epyc7002
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bd3dcc6a22
linux_dsm_epyc7002/fs/cifs
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Long Li bd3dcc6a22 CIFS: SMBD: Upper layer performs SMB read via RDMA write through memory registration 
If I/O size is larger than rdma_readwrite_threshold, use RDMA write for
SMB read by specifying channel SMB2_CHANNEL_RDMA_V1 or
SMB2_CHANNEL_RDMA_V1_INVALIDATE in the SMB packet, depending on SMB dialect
used. Append a smbd_buffer_descriptor_v1 to the end of the SMB packet and fill
in other values to indicate this SMB read uses RDMA write.

There is no need to read from the transport for incoming payload. At the time
SMB read response comes back, the data is already transferred and placed in the
pages by RDMA hardware.

When SMB read is finished, deregister the memory regions if RDMA write is used
for this SMB read. smbd_deregister_mr may need to do local invalidation and
sleep, if server remote invalidation is not used.

There are situations where the MID may not be created on I/O failure, under
which memory region is deregistered when read 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: Read correct returned data length for RDMA write (SMB read) I/O 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: Read correct returned data length for RDMA write (SMB read) I/O 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: SMBD: Upper layer performs SMB read via RDMA write through memory registration 2018-01-24 19:49:07 -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: SMBD: Read correct returned data length for RDMA write (SMB read) I/O 2018-01-24 19:49:07 -06:00
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: Read correct returned data length for RDMA write (SMB read) I/O 2018-01-24 19:49:07 -06:00
smb2pdu.c CIFS: SMBD: Upper layer performs SMB read via RDMA write 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