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  1. 08 2月, 2014 1 次提交
    • S
      Add protocol specific operation for CIFS xattrs · d979f3b0
      由 Steve French 提交于 
      Changeset 666753c3 added protocol
operations for get/setxattr to avoid calling cifs operations
on smb2/smb3 mounts for xattr operations and this changeset
adds the calls to cifs specific protocol operations for xattrs
(in order to reenable cifs support for xattrs which was
temporarily disabled by the previous changeset.  We do not
have SMB2/SMB3 worker function for setting xattrs yet so
this only enables it for cifs.

CCing stable since without these two small changsets (its
small coreq 666753c3 is
also needed) calling getfattr/setfattr on smb2/smb3 mounts
causes problems.
Signed-off-by: NSteve French <smfrench@gmail.com>
Reviewed-by: NShirish Pargaonkar <spargaonkar@suse.com>
CC: Stable <stable@kernel.org>
      d979f3b0
  3. 31 1月, 2014 1 次提交
  5. 27 1月, 2014 1 次提交
  7. 20 1月, 2014 12 次提交
  9. 28 12月, 2013 3 次提交
  11. 25 11月, 2013 1 次提交
    • S
      [CIFS] Do not use btrfs refcopy ioctl for SMB2 copy offload · f19e84df
      由 Steve French 提交于 
      Change cifs.ko to using CIFS_IOCTL_COPYCHUNK instead
of BTRFS_IOC_CLONE to avoid confusion about whether
copy-on-write is required or optional for this operation.

SMB2/SMB3 copyoffload had used the BTRFS_IOC_CLONE ioctl since
they both speed up copy by offloading the copy rather than
passing many read and write requests back and forth and both have
identical syntax (passing file handles), but for SMB2/SMB3
CopyChunk the server is not required to use copy-on-write
to make a copy of the file (although some do), and Christoph
has commented that since CopyChunk does not require
copy-on-write we should not reuse BTRFS_IOC_CLONE.

This patch renames the ioctl to use a cifs specific IOCTL
CIFS_IOCTL_COPYCHUNK.  This ioctl is particularly important
for SMB2/SMB3 since large file copy over the network otherwise
can be very slow, and with this is often more than 100 times
faster putting less load on server and client.

Note that if a copy syscall is ever introduced, depending on
its requirements/format it could end up using one of the other
three methods that CIFS/SMB2/SMB3 can do for copy offload,
but this method is particularly useful for file copy
and broadly supported (not just by Samba server).
Signed-off-by: NSteve French <smfrench@gmail.com>
Reviewed-by: NJeff Layton <jlayton@redhat.com>
Reviewed-by: NDavid Disseldorp <ddiss@samba.org>
      f19e84df
  13. 20 11月, 2013 1 次提交
  15. 19 11月, 2013 2 次提交
  17. 16 11月, 2013 3 次提交
    • S
      [CIFS] Warn if SMB3 encryption required by server · 0cbaa53c
      由 Steve French 提交于 
      We do not support SMB3 encryption yet, warn if server responds
that SMB3 encryption is mandatory.
Signed-off-by: NSteve French <smfrench@gmail.com>
      0cbaa53c
    • S
      setfacl removes part of ACL when setting POSIX ACLs to Samba · b1d93356
      由 Steve French 提交于 
      setfacl over cifs mounts can remove the default ACL when setting the
(non-default part of) the ACL and vice versa (we were leaving at 0
rather than setting to -1 the count field for the unaffected
half of the ACL.  For example notice the setfacl removed
the default ACL in this sequence:

steven@steven-GA-970A-DS3:~/cifs-2.6$ getfacl /mnt/test-dir ; setfacl
-m default:user:test:rwx,user:test:rwx /mnt/test-dir
getfacl: Removing leading '/' from absolute path names
user::rwx
group::r-x
other::r-x
default:user::rwx
default:user:test:rwx
default:group::r-x
default:mask::rwx
default:other::r-x

steven@steven-GA-970A-DS3:~/cifs-2.6$ getfacl /mnt/test-dir
getfacl: Removing leading '/' from absolute path names
user::rwx
user:test:rwx
group::r-x
mask::rwx
other::r-x

CC: Stable <stable@kernel.org>
Signed-off-by: NSteve French <smfrench@gmail.com>
Acked-by: NJeremy Allison <jra@samba.org>
      b1d93356
    • S
      [CIFS] Set copychunk defaults · de9f68df
      由 Steve French 提交于 
      Patch 2 of the copy chunk series (the final patch will
use these to handle copies of files larger than the chunk size.

We set the same defaults that Windows and Samba expect for
CopyChunk.
Signed-off-by: NSteve French <smfrench@gmail.com>
Reviewed-by: NDavid Disseldorp <ddiss@samba.org>
      de9f68df
  19. 14 11月, 2013 1 次提交
    • S
      CIFS: SMB2/SMB3 Copy offload support (refcopy) phase 1 · 41c1358e
      由 Steve French 提交于 
      This first patch adds the ability for us to do a server side copy
(ie fast copy offloaded to the server to perform, aka refcopy)

"cp --reflink"

of one file to another located on the same server.  This
is much faster than traditional copy (which requires
reading and writing over the network and extra
memcpys).

This first version is not going to be copy
files larger than about 1MB (to Samba) until I add
support for multiple chunks and for autoconfiguring
the chunksize.

It includes:
1) processing of the ioctl
2) marshalling and sending the SMB2/SMB3 fsctl over the network
3) simple parsing of the response

It does not include yet (these will be in followon patches to come soon):
1) support for multiple chunks
2) support for autoconfiguring and remembering the chunksize
3) Support for the older style copychunk which Samba 4.1 server supports
(because this requires write permission on the target file, which
cp does not give you, apparently per-posix).  This may require
a distinct tool (other than cp) and other ioctl to implement.
Reviewed-by: NPavel Shilovsky <piastry@etersoft.ru>
Signed-off-by: NSteve French <smfrench@gmail.com>
      41c1358e
  21. 12 11月, 2013 5 次提交
  23. 03 11月, 2013 7 次提交
    • S
      Query network adapter info at mount time for debugging · c481e9fe
      由 Steve French 提交于 
      When CONFIG_CIFS_STATS2 enabled query adapter info for debugging

It is easy now in SMB3 to query the information about the server's
network interfaces (and at least Windows 8 and above do this, if not
other clients) there are some useful pieces of information you can get
including:

- all of the network interfaces that the server advertises (not just
the one you are mounting over), and with SMB3 supporting multichannel
this helps with more than just failover (also aggregating multiple
sockets under one mount)

- whether the adapter supports RSS (useful to know if you want to
estimate whether setting up two or more socket connections to the same
address is going to be faster due to RSS offload in the adapter)

- whether the server supports RDMA

- whether the server has IPv6 interfaces (if you connected over IPv4
but prefer IPv6 e.g.)

- what the link speed is (you might want to reconnect over a higher
speed interface if available)

(Of course we could also rerequest this on every mount cheaplly to the
same server, as Windows apparently does, so we can update the adapter
info on new mounts, and also on every reconnect if the network
interface drops temporarily - so we don't have to rely on info from
the first mount to this server)

It is trivial to request this information - and certainly will be useful
when we get to the point of doing multichannel (and eventually RDMA),
but some of this (linkspeed etc.) info may help for debugging in
the meantime.  Enable this request when CONFIG_CIFS_STATS2 is on
(only for smb3 mounts since it is an SMB3 or later ioctl).
Signed-off-by: NSteve French <smfrench@gmail.com>
      c481e9fe
    • S
      Fix unused variable warning when CIFS POSIX disabled · f10d9ba4
      由 Steve French 提交于 
      Fix unused variable warning when CONFIG_CIFS_POSIX disabled.

   fs/cifs/ioctl.c: In function 'cifs_ioctl':
>> fs/cifs/ioctl.c:40:8: warning: unused variable 'ExtAttrMask' [-Wunused-variable]
     __u64 ExtAttrMask = 0;
           ^
Pointed out by 0-DAY kernel build testing backend
Signed-off-by: NSteve French <smfrench@gmail.com>
      f10d9ba4
    • S
      Allow setting per-file compression via CIFS protocol · c7f508a9
      由 Steve French 提交于 
      An earlier patch allowed setting the per-file compression flag

"chattr +c filename"

on an smb2 or smb3 mount, and also allowed lsattr to return
whether a file on a cifs, or smb2/smb3 mount was compressed.

This patch extends the ability to set the per-file
compression flag to the cifs protocol, which uses a somewhat
different IOCTL mechanism than SMB2, although the payload
(the flags stored in the compression_state) are the same.
Reviewed-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <smfrench@gmail.com>
      c7f508a9
    • S
      Query File System Alignment · af6a12ea
      由 Steven French 提交于 
      In SMB3 it is now possible to query the file system
alignment info, and the preferred (for performance)
sector size and whether the underlying disk
has no seek penalty (like SSD).

Query this information at mount time for SMB3,
and make it visible in /proc/fs/cifs/DebugData
for debugging purposes.

This alignment information and preferred sector
size info will be helpful for the copy offload
patches to setup the right chunks in the CopyChunk
requests.   Presumably the knowledge that the
underlying disk is SSD could also help us
make better readahead and writebehind
decisions (something to look at in the future).
Signed-off-by: NSteve French <smfrench@gmail.com>
      af6a12ea
    • S
      Query device characteristics at mount time from server on SMB2/3 not just on cifs mounts · 2167114c
      由 Steven French 提交于 
      Currently SMB2 and SMB3 mounts do not query the device information at mount time
from the server as is done for cifs.  These can be useful for debugging.
This is a minor patch, that extends the previous one (which added ability to
query file system attributes at mount time - this returns the device
characteristics - also via in /proc/fs/cifs/DebugData)
Signed-off-by: NSteve French <smfrench@gmail.com>
      2167114c
    • S
      cifs: Send a logoff request before removing a smb session · 7f48558e
      由 Shirish Pargaonkar 提交于 
      Send a smb session logoff request before removing smb session off of the list.
On a signed smb session, remvoing a session off of the list before sending
a logoff request results in server returning an error for lack of
smb signature.

Never seen an error during smb logoff, so as per MS-SMB2 3.2.5.1,
not sure how an error during logoff should be retried. So for now,
if a server returns an error to a logoff request, log the error and
remove the session off of the list.
Signed-off-by: NShirish Pargaonkar <shirishpargaonkar@gmail.com>
Reviewed-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <smfrench@gmail.com>
      7f48558e
    • T
      cifs: Make big endian multiplex ID sequences monotonic on the wire · 3d378d3f
      由 Tim Gardner 提交于 
      The multiplex identifier (MID) in the SMB header is only
ever used by the client, in conjunction with PID, to match responses
from the server. As such, the endianess of the MID is not important.
However, When tracing packet sequences on the wire, protocol analyzers
such as wireshark display MID as little endian. It is much more informative
for the on-the-wire MID sequences to match debug information emitted by the
CIFS driver.  Therefore, one should write and read MID in the SMB header
assuming it is always little endian.

Observed from wireshark during the protocol negotiation
and session setup:

        Multiplex ID: 256
        Multiplex ID: 256
        Multiplex ID: 512
        Multiplex ID: 512
        Multiplex ID: 768
        Multiplex ID: 768

After this patch on-the-wire MID values begin at 1 and increase monotonically.

Introduce get_next_mid64() for the internal consumers that use the full 64 bit
multiplex identifier.

Introduce the helpers get_mid() and compare_mid() to make the endian
translation clear.
Reviewed-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NTim Gardner <timg@tpi.com>
Signed-off-by: NSteve French <smfrench@gmail.com>
      3d378d3f
  25. 28 10月, 2013 2 次提交