From: Long Li
Export SMBDirect debug counters to /proc/fs/cifs/DebugData.
Those are used for debugging, troubleshooting and profiling.
Signed-off-by: Long Li
---
fs/cifs/cifs_debug.c | 87
1 file changed, 87 insertions(+)
diff --git a/fs
From: Long Li
Add function to tear down a SMBDirect connection. This is used by upper layer
to free all SMBDirect connection and transport resources.
Signed-off-by: Long Li
---
fs/cifs/smbdirect.c | 16
fs/cifs/smbdirect.h | 3 +++
2 files changed, 19 insertions(+)
diff
From: Long Li
This patch is for preparing upper layer for doing SMB read via RDMA write.
When we assemble the SMB read packet header, we need to know the I/O layout
if this request is to use a RDMA write. rdata has all the information we need
for memory registration. Add rdata
From: Long Li <lon...@microsoft.com>
Starting with SMB2 dialect 3.0, Microsoft introduced SMBDirect transport
protocol for transferring upper layer (SMB2) payload over RDMA via Infiniband,
RoCE or iWARP. The prococol is published in [MS-SMBD]
(https://msdn.microsoft.com/en-us/library/hh
From: Long Li
Starting with SMB2 dialect 3.0, Microsoft introduced SMBDirect transport
protocol for transferring upper layer (SMB2) payload over RDMA via Infiniband,
RoCE or iWARP. The prococol is published in [MS-SMBD]
(https://msdn.microsoft.com/en-us/library/hh536346.aspx).
Patch v2 added
From: Long Li <lon...@microsoft.com>
With SMBDirect connected, use it for receiving data via RDMA receive.
Signed-off-by: Long Li <lon...@microsoft.com>
---
fs/cifs/connect.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/cifs/connect.c b/fs/cifs/con
From: Long Li
With SMBDirect connected, use it for receiving data via RDMA receive.
Signed-off-by: Long Li
---
fs/cifs/connect.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 1a9f22f..8026682 100644
--- a/fs/cifs/connect.c
From: Long Li <lon...@microsoft.com>
Memory registration is used for transferring payload via RDMA read or write.
After I/O is done, memory registrations are recovered and reused. This
process can be time consuming and is done in a work queue.
Signed-off-by: Long Li <lon...@micr
From: Long Li
Memory registration is used for transferring payload via RDMA read or write.
After I/O is done, memory registrations are recovered and reused. This
process can be time consuming and is done in a work queue.
Signed-off-by: Long Li
---
fs/cifs/smbdirect.c | 428
From: Long Li <lon...@microsoft.com>
With SMBDirect connected, use it for sending data via RDMA send.
Signed-off-by: Long Li <lon...@microsoft.com>
---
fs/cifs/transport.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 7efb
From: Long Li <lon...@microsoft.com>
This patch is for preparing upper layer for doing SMB read via RDMA write.
When RDMA write is used for SMB read, the returned data length is in
DataRemaining in the response packet. Reading it properly by adding a
parameter to specifiy where the returne
From: Long Li
With SMBDirect connected, use it for sending data via RDMA send.
Signed-off-by: Long Li
---
fs/cifs/transport.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 7efbab0..3a9b5a0 100644
--- a/fs/cifs/transport.c
+++ b/fs
From: Long Li
This patch is for preparing upper layer for doing SMB read via RDMA write.
When RDMA write is used for SMB read, the returned data length is in
DataRemaining in the response packet. Reading it properly by adding a
parameter to specifiy where the returned data length is.
Signed
From: Long Li <lon...@microsoft.com>
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
From: Long Li
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
> Hey Long, how do I request a CIFS RDMA mount from the Linux client? Is
> there a mount.cifs option? If so, where can I get the mount.cifs code that
> enables this? Or is there some other way?
You can use "-o rdma" in the mount option to connect to RDMA.
For example: "mount.cifs -o
> Hey Long, how do I request a CIFS RDMA mount from the Linux client? Is
> there a mount.cifs option? If so, where can I get the mount.cifs code that
> enables this? Or is there some other way?
You can use "-o rdma" in the mount option to connect to RDMA.
For example: "mount.cifs -o
> Long,
>
> >> Which kernel version is this patch aimed at?
> >
> > Martin, thanks for pointing this out. This should also go to stable
> > trees.
>
> The reason I asked is that it didn't apply to neither fixes, nor for-next.
>
> I applied it to 4.13/scsi-fixes by hand and added a stable tag.
> Long,
>
> >> Which kernel version is this patch aimed at?
> >
> > Martin, thanks for pointing this out. This should also go to stable
> > trees.
>
> The reason I asked is that it didn't apply to neither fixes, nor for-next.
>
> I applied it to 4.13/scsi-fixes by hand and added a stable tag.
> -Original Message-
> From: Long Li [mailto:lon...@exchange.microsoft.com]
> Sent: Tuesday, August 29, 2017 12:29 PM
> To: Steve French <sfre...@samba.org>; linux-c...@vger.kernel.org; samba-
> techni...@lists.samba.org; linux-kernel@vger.kernel.org; linux-
&
> -Original Message-
> From: Long Li [mailto:lon...@exchange.microsoft.com]
> Sent: Tuesday, August 29, 2017 12:29 PM
> To: Steve French ; linux-c...@vger.kernel.org; samba-
> techni...@lists.samba.org; linux-kernel@vger.kernel.org; linux-
> r...@vger.kernel.org; Chris
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Wednesday, August 30, 2017 11:19 AM
> To: Long Li <lon...@microsoft.com>
> Cc: Steve French <sfre...@samba.org>; linux-cifs c...@vger.kernel.org>; samba-technical <samba-tec
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Wednesday, August 30, 2017 11:19 AM
> To: Long Li
> Cc: Steve French ; linux-cifs c...@vger.kernel.org>; samba-technical ;
> Kernel Mailing List ; linux-
> r...@vger.kernel.org;
> -Original Message-
> From: Christoph Hellwig [mailto:h...@infradead.org]
> Sent: Wednesday, August 30, 2017 1:52 AM
> To: Long Li <lon...@microsoft.com>
> Cc: Christoph Hellwig <h...@infradead.org>; Steve French
> <sfre...@samba.org>; linux-c
> -Original Message-
> From: Christoph Hellwig [mailto:h...@infradead.org]
> Sent: Wednesday, August 30, 2017 1:52 AM
> To: Long Li
> Cc: Christoph Hellwig ; Steve French
> ; linux-c...@vger.kernel.org; samba-
> techni...@lists.samba.org; linux-kernel@vger.ker
> -Original Message-
> From: Martin K. Petersen [mailto:martin.peter...@oracle.com]
> Sent: Tuesday, August 29, 2017 6:31 PM
> To: Long Li <lon...@microsoft.com>
> Cc: KY Srinivasan <k...@microsoft.com>; Haiyang Zhang
> <haiya...@microsoft.com>
> -Original Message-
> From: Martin K. Petersen [mailto:martin.peter...@oracle.com]
> Sent: Tuesday, August 29, 2017 6:31 PM
> To: Long Li
> Cc: KY Srinivasan ; Haiyang Zhang
> ; James E . J . Bottomley
> ; de...@linuxdriverproject.org; linux-
> s...@vger.
> -Original Message-
> From: Tom Talpey
> Sent: Monday, August 14, 2017 12:55 PM
> To: Long Li <lon...@microsoft.com>; Steve French <sfre...@samba.org>;
> linux-c...@vger.kernel.org; samba-techni...@lists.samba.org; linux-
> ker...@vger.kernel.org; linux-
> -Original Message-
> From: Tom Talpey
> Sent: Monday, August 14, 2017 12:55 PM
> To: Long Li ; Steve French ;
> linux-c...@vger.kernel.org; samba-techni...@lists.samba.org; linux-
> ker...@vger.kernel.org; linux-r...@vger.kernel.org
> Subject: RE: [[PATCH v
> -Original Message-
> From: Tom Talpey
> Sent: Monday, August 14, 2017 1:44 PM
> To: Long Li <lon...@microsoft.com>; Steve French <sfre...@samba.org>;
> linux-c...@vger.kernel.org; samba-techni...@lists.samba.org; linux-
> ker...@vger.kernel.org; linux-r...
> -Original Message-
> From: Tom Talpey
> Sent: Monday, August 14, 2017 1:44 PM
> To: Long Li ; Steve French ;
> linux-c...@vger.kernel.org; samba-techni...@lists.samba.org; linux-
> ker...@vger.kernel.org; linux-r...@vger.kernel.org
> Subject: RE: [[PATCH v
> -Original Message-
> From: Christoph Hellwig [mailto:h...@infradead.org]
> Sent: Sunday, August 13, 2017 3:24 AM
> To: Long Li <lon...@microsoft.com>
> Cc: Steve French <sfre...@samba.org>; linux-c...@vger.kernel.org; samba-
> techni...@lists.samba.org; linu
> -Original Message-
> From: Christoph Hellwig [mailto:h...@infradead.org]
> Sent: Sunday, August 13, 2017 3:24 AM
> To: Long Li
> Cc: Steve French ; linux-c...@vger.kernel.org; samba-
> techni...@lists.samba.org; linux-kernel@vger.kernel.org; Long Li
>
> Subjec
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Tuesday, August 29, 2017 5:49 PM
> To: Long Li <lon...@microsoft.com>
> Cc: Steve French <sfre...@samba.org>; linux-cifs c...@vger.kernel.org>; samba-technical <samba-tec
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Tuesday, August 29, 2017 5:49 PM
> To: Long Li
> Cc: Steve French ; linux-cifs c...@vger.kernel.org>; samba-technical ;
> Kernel Mailing List ; linux-
> r...@vger.kernel.org;
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Tuesday, August 29, 2017 5:50 PM
> To: Long Li <lon...@microsoft.com>
> Cc: Steve French <sfre...@samba.org>; linux-cifs c...@vger.kernel.org>; samba-technical <samba-tec
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Tuesday, August 29, 2017 5:50 PM
> To: Long Li
> Cc: Steve French ; linux-cifs c...@vger.kernel.org>; samba-technical ;
> Kernel Mailing List ; linux-
> r...@vger.kernel.org;
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Tuesday, August 29, 2017 4:15 PM
> To: Long Li <lon...@microsoft.com>
> Cc: Steve French <sfre...@samba.org>; linux-cifs c...@vger.kernel.org>; samba-technical <samba-tec
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Tuesday, August 29, 2017 4:15 PM
> To: Long Li
> Cc: Steve French ; linux-cifs c...@vger.kernel.org>; samba-technical ;
> Kernel Mailing List ; linux-
> r...@vger.kernel.org;
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Tuesday, August 29, 2017 4:12 PM
> To: Long Li <lon...@microsoft.com>
> Cc: Steve French <sfre...@samba.org>; linux-cifs c...@vger.kernel.org>; samba-technical <samba-tec
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Tuesday, August 29, 2017 4:12 PM
> To: Long Li
> Cc: Steve French ; linux-cifs c...@vger.kernel.org>; samba-technical ;
> Kernel Mailing List ; linux-
> r...@vger.kernel.org; Christ
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Tuesday, August 29, 2017 3:45 PM
> To: Long Li <lon...@microsoft.com>
> Cc: Steve French <sfre...@samba.org>; linux-cifs c...@vger.kernel.org>; samba-technical <samba-tec
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Tuesday, August 29, 2017 3:45 PM
> To: Long Li
> Cc: Steve French ; linux-cifs c...@vger.kernel.org>; samba-technical ;
> Kernel Mailing List ; linux-
> r...@vger.kernel.org; Christ
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Tuesday, August 29, 2017 3:37 PM
> To: Long Li <lon...@microsoft.com>
> Cc: Steve French <sfre...@samba.org>; linux-cifs c...@vger.kernel.org>; samba-technical <samba-tec
> -Original Message-
> From: Pavel Shilovsky [mailto:piastr...@gmail.com]
> Sent: Tuesday, August 29, 2017 3:37 PM
> To: Long Li
> Cc: Steve French ; linux-cifs c...@vger.kernel.org>; samba-technical ;
> Kernel Mailing List ; linux-
> r...@vger.kernel.org;
From: Long Li <lon...@microsoft.com>
Add code to implement SMBDirect transport and protocol.
1. Add transport APIs in the header file. Upper layer code uses transport
through the APIs. Those include:
Connection management:
smbd_get_connection
smbd_reconnect
smbd_destroy
Transfer p
From: Long Li
Add code to implement SMBDirect transport and protocol.
1. Add transport APIs in the header file. Upper layer code uses transport
through the APIs. Those include:
Connection management:
smbd_get_connection
smbd_reconnect
smbd_destroy
Transfer payload through RDMA send/recv
From: Long Li <lon...@microsoft.com>
Do a reconnect on SMBDirect when it is used as the connection. Reconnect can
happen for many reasons and it's mostly the decision of upper layer SMB2 not
SMBDirect.
Signed-off-by: Long Li <lon...@microsoft.com>
---
fs/cifs/connect.c | 6 ++
From: Long Li
Do a reconnect on SMBDirect when it is used as the connection. Reconnect can
happen for many reasons and it's mostly the decision of upper layer SMB2 not
SMBDirect.
Signed-off-by: Long Li
---
fs/cifs/connect.c | 6 +-
1 file changed, 5 insertions(+), 1 deletion(-)
diff
From: Long Li <lon...@microsoft.com>
Add "rdma" to CIFS mount options to connect to SMB Direct.
Add checks to validate this is used on SMB 3.X dialects.
To connect to SMBDirect, use "mount.cifs -o rdma,vers=3.x".
At the time of this patch, 3.x can be 3.0, 3.02 or 3.1.
From: Long Li
Add "rdma" to CIFS mount options to connect to SMB Direct.
Add checks to validate this is used on SMB 3.X dialects.
To connect to SMBDirect, use "mount.cifs -o rdma,vers=3.x".
At the time of this patch, 3.x can be 3.0, 3.02 or 3.1.1.
Signed-off-by: L
From: Long Li <lon...@microsoft.com>
When "rdma" is specified in the mount option, CIFS attempts to connect to
SMBDirect instead of TCP socket.
Signed-off-by: Long Li <lon...@microsoft.com>
---
fs/cifs/connect.c | 15 +++
1 file changed, 15 insertions(+)
From: Long Li
When "rdma" is specified in the mount option, CIFS attempts to connect to
SMBDirect instead of TCP socket.
Signed-off-by: Long Li
---
fs/cifs/connect.c | 15 +++
1 file changed, 15 insertions(+)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
ind
From: Long Li <lon...@microsoft.com>
With SMBDirect connected, use it for sending data via RDMA send.
Signed-off-by: Long Li <lon...@microsoft.com>
---
fs/cifs/transport.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index ba62
From: Long Li
With SMBDirect connected, use it for sending data via RDMA send.
Signed-off-by: Long Li
---
fs/cifs/transport.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index ba62aaf..bddb699 100644
--- a/fs/cifs/transport.c
+++ b/fs
From: Long Li <lon...@microsoft.com>
The channel value for requesting server remote invalidating local memory
registration should be 0x0002
Signed-off-by: Long Li <lon...@microsoft.com>
---
fs/cifs/smb2pdu.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --g
From: Long Li
The channel value for requesting server remote invalidating local memory
registration should be 0x0002
Signed-off-by: Long Li
---
fs/cifs/smb2pdu.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 18700fd
From: Long Li <lon...@microsoft.com>
When CIFS wants to umount, call shutdown on transport when SMBDirect is used.
Signed-off-by: Long Li <lon...@microsoft.com>
---
fs/cifs/connect.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
i
From: Long Li
When CIFS wants to umount, call shutdown on transport when SMBDirect is used.
Signed-off-by: Long Li
---
fs/cifs/connect.c | 5 +
1 file changed, 5 insertions(+)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 341a3fd..4f62337 100644
--- a/fs/cifs/connect.c
+++ b
From: Long Li <lon...@microsoft.com>
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
From: Long Li
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
From: Long Li <lon...@microsoft.com>
When connecting over SMBDirect, the transport negotiates its maximum I/O sizes
with the server and determines how to choose to do RDMA send/recv vs
read/write. Expose these maximum I/O sizes to upper layer so we will get the
correct sized payloads.
Sign
From: Long Li
When connecting over SMBDirect, the transport negotiates its maximum I/O sizes
with the server and determines how to choose to do RDMA send/recv vs
read/write. Expose these maximum I/O sizes to upper layer so we will get the
correct sized payloads.
Signed-off-by: Long Li
---
fs
From: Long Li <lon...@microsoft.com>
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 a
From: Long Li
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
From: Long Li <lon...@microsoft.com>
To prepare for protocol implementation, add constants and user-configurable
values in the SMBDirect protocol.
Signed-off-by: Long Li <lon...@microsoft.com>
---
fs/cifs/smbdirect.c | 78 ++
From: Long Li
To prepare for protocol implementation, add constants and user-configurable
values in the SMBDirect protocol.
Signed-off-by: Long Li
---
fs/cifs/smbdirect.c | 78 +
fs/cifs/smbdirect.h | 20 ++
2 files changed, 98
From: Long Li <lon...@microsoft.com>
To prepare for RDMA read/write using memory registration, add memory
registartion pointers to upper layer data I/O context.
Signed-off-by: Long Li <lon...@microsoft.com>
---
fs/cifs/cifsglob.h | 2 ++
1 file changed, 2 insertions(+)
diff --g
From: Long Li
To prepare for RDMA read/write using memory registration, add memory
registartion pointers to upper layer data I/O context.
Signed-off-by: Long Li
---
fs/cifs/cifsglob.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index dc5404d
From: Long Li <lon...@microsoft.com>
When we assemble the SMB read packet header, we need to know the I/O layout
if this request is to use a RDMA write. rdata has all the information we need
for memory registration. Add rdata to smb2_new_read_req.
Signed-off-by: Long Li <lon...@micr
From: Long Li
When we assemble the SMB read packet header, we need to know the I/O layout
if this request is to use a RDMA write. rdata has all the information we need
for memory registration. Add rdata to smb2_new_read_req.
Signed-off-by: Long Li
---
fs/cifs/smb2pdu.c | 14 +-
1
From: Long Li <lon...@microsoft.com>
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 t
From: Long Li
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
From: Long Li <lon...@microsoft.com>
Starting with SMB2 dialect 3.0, Microsoft introduced SMBDirect transport
protocol for transferring upper layer (SMB2) payload over RDMA via Infiniband,
RoCE or iWARP. The prococol is published in [MS-SMBD]
(https://msdn.microsoft.com/en-us/library/hh
From: Long Li
Starting with SMB2 dialect 3.0, Microsoft introduced SMBDirect transport
protocol for transferring upper layer (SMB2) payload over RDMA via Infiniband,
RoCE or iWARP. The prococol is published in [MS-SMBD]
(https://msdn.microsoft.com/en-us/library/hh536346.aspx).
Patch v2 added
From: Long Li <lon...@microsoft.com>
With SMBDirect connected, use it for receiving data via RDMA recv.
Signed-off-by: Long Li <lon...@microsoft.com>
---
fs/cifs/connect.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
i
From: Long Li
With SMBDirect connected, use it for receiving data via RDMA recv.
Signed-off-by: Long Li
---
fs/cifs/connect.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 4f62337..29f384f 100644
--- a/fs/cifs/connect.c
From: Long Li <lon...@microsoft.com>
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 c
From: Long Li
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
> -Original Message-
> From: Roland Dreier [mailto:rol...@purestorage.com]
> Sent: Tuesday, August 29, 2017 11:21 AM
> To: Long Li <lon...@microsoft.com>
> Cc: Steve French <sfre...@samba.org>; linux-c...@vger.kernel.org; samba-
> techni...@lists
> -Original Message-
> From: Roland Dreier [mailto:rol...@purestorage.com]
> Sent: Tuesday, August 29, 2017 11:21 AM
> To: Long Li
> Cc: Steve French ; linux-c...@vger.kernel.org; samba-
> techni...@lists.samba.org; LKML ; linux-
> r...@vger.kernel.org; Christoph
From: Long Li <lon...@microsoft.com>
Add SMBDirect as an optional connection to the SMB session structure in CIFS.
When SMB session is connected through SMBDirect, upper layer uses this
connection to carry payloads.
With the transport code hooked up to upper layer, add SMBDirect code to
Ma
From: Long Li
Add SMBDirect as an optional connection to the SMB session structure in CIFS.
When SMB session is connected through SMBDirect, upper layer uses this
connection to carry payloads.
With the transport code hooked up to upper layer, add SMBDirect code to
Makefile.
Signed-off-by: Long
From: Long Li <lon...@microsoft.com>
Export SMBDirect debug counters to /proc/fs/cifs/DebugData.
Those are used for debugging, troubleshooting and profiling.
Signed-off-by: Long Li <lon...@microsoft.com>
---
fs/cifs/cifs_debug.c | 82
From: Long Li
Export SMBDirect debug counters to /proc/fs/cifs/DebugData.
Those are used for debugging, troubleshooting and profiling.
Signed-off-by: Long Li
---
fs/cifs/cifs_debug.c | 82
1 file changed, 82 insertions(+)
diff --git a/fs
From: Long Li <lon...@microsoft.com>
When RDMA write is used for SMB read, the returned data length is in
DataRemaining in the response packet. Reading it properly by adding a
parameter to specifiy where the returned data length is.
Signed-off-by: Long Li <lon...@microsoft.com>
From: Long Li
When RDMA write is used for SMB read, the returned data length is in
DataRemaining in the response packet. Reading it properly by adding a
parameter to specifiy where the returned data length is.
Signed-off-by: Long Li
---
fs/cifs/cifsglob.h | 10 --
fs/cifs/cifssmb.c
> -Original Message-
> From: samba-technical [mailto:samba-technical-boun...@lists.samba.org]
> On Behalf Of Long Li via samba-technical
> Sent: Monday, August 21, 2017 1:24 PM
> To: Steve Wise <sw...@opengridcomputing.com>; 'Steve French'
> <
> -Original Message-
> From: samba-technical [mailto:samba-technical-boun...@lists.samba.org]
> On Behalf Of Long Li via samba-technical
> Sent: Monday, August 21, 2017 1:24 PM
> To: Steve Wise ; 'Steve French'
> ; linux-c...@vger.kernel.org; samba-
> techni...@l
From: Long Li <lon...@microsoft.com>
When storvsc is sending I/O to Hyper-v, it may allocate a bigger buffer
descriptor for large data payload that can't fit into a pre-allocated
buffer descriptor. This bigger buffer is freed on return path.
If I/O request to Hyper-v fails due to ring
From: Long Li
When storvsc is sending I/O to Hyper-v, it may allocate a bigger buffer
descriptor for large data payload that can't fit into a pre-allocated
buffer descriptor. This bigger buffer is freed on return path.
If I/O request to Hyper-v fails due to ring buffer busy, the storvsc
> -Original Message-
> From: Leon Romanovsky [mailto:l...@kernel.org]
> Sent: Wednesday, August 23, 2017 12:02 PM
> To: Long Li <lon...@microsoft.com>
> Cc: Steve French <sfre...@samba.org>; linux-c...@vger.kernel.org; samba-
> techni...@lists.samba.org
> -Original Message-
> From: Leon Romanovsky [mailto:l...@kernel.org]
> Sent: Wednesday, August 23, 2017 12:02 PM
> To: Long Li
> Cc: Steve French ; linux-c...@vger.kernel.org; samba-
> techni...@lists.samba.org; linux-kernel@vger.kernel.org; linux-
> r...@vger.
> -Original Message-
> From: Leon Romanovsky [mailto:l...@kernel.org]
> Sent: Wednesday, August 23, 2017 6:52 AM
> To: Long Li <lon...@microsoft.com>
> Cc: Steve French <sfre...@samba.org>; linux-c...@vger.kernel.org; samba-
> techni...@lists.samba.org
> -Original Message-
> From: Leon Romanovsky [mailto:l...@kernel.org]
> Sent: Wednesday, August 23, 2017 6:52 AM
> To: Long Li
> Cc: Steve French ; linux-c...@vger.kernel.org; samba-
> techni...@lists.samba.org; linux-kernel@vger.kernel.org; linux-
> r...@vger.
> Wouldn't it make sense to backport the changes to set the virt_boundary
> (which probably still is the SG_GAPS flag in such an old kernel)?
We can make storvsc use SG_GAPS. But the following patch is missing in 4.1
stable block layer to make this work on some I/O situations. Backporting is
> Wouldn't it make sense to backport the changes to set the virt_boundary
> (which probably still is the SG_GAPS flag in such an old kernel)?
We can make storvsc use SG_GAPS. But the following patch is missing in 4.1
stable block layer to make this work on some I/O situations. Backporting is
From: Long Li <lon...@microsoft.com>
This patch is for linux-stable 4.1 branch only.
storvsc checks the SG list for gaps before passing them to Hyper-v device.
If there are gaps, data is copied to a bounce buffer and a continuous data
buffer is passed to Hyper-V.
The check on gaps assu
From: Long Li
This patch is for linux-stable 4.1 branch only.
storvsc checks the SG list for gaps before passing them to Hyper-v device.
If there are gaps, data is copied to a bounce buffer and a continuous data
buffer is passed to Hyper-V.
The check on gaps assumes SG list is continuous
> > > Hey Long,
> > >
> > > What testing have you done with this on the various rdma transports?
> > > Does it work over IB, RoCE, and iWARP providers?
> >
> > Hi Steve,
> >
> > Currently all the tests have been done over Infiniband. We haven't
> > tested on
> RoCE
> > or iWARP, but planned to do
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