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  1. 21 2月, 2009 2 次提交
  3. 29 1月, 2009 1 次提交
    • J
      cifs: turn smb_send into a wrapper around smb_sendv · 0496e02d
      由 Jeff Layton 提交于 
      cifs: turn smb_send into a wrapper around smb_sendv

Rename smb_send2 to smb_sendv to make it consistent with kernel naming
conventions for functions that take a vector.

There's no need to have 2 functions to handle sending SMB calls. Turn
smb_send into a wrapper around smb_sendv. This also allows us to
properly mark the socket as needing to be reconnected when there's a
partial send from smb_send.

Also, in practice we always use the address and noblocksnd flag
that's attached to the TCP_Server_Info. There's no need to pass
them in as separate args to smb_sendv.
Signed-off-by: NJeff Layton <jlayton@redhat.com>
Acked-by: NDave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      0496e02d
  5. 26 12月, 2008 1 次提交
  7. 15 11月, 2008 2 次提交
    • J
      cifs: reinstate sharing of SMB sessions sans races · 14fbf50d
      由 Jeff Layton 提交于 
      We do this by abandoning the global list of SMB sessions and instead
moving to a per-server list. This entails adding a new list head to the
TCP_Server_Info struct. The refcounting for the cifsSesInfo is moved to
a non-atomic variable. We have to protect it by a lock anyway, so there's
no benefit to making it an atomic. The list and refcount are protected
by the global cifs_tcp_ses_lock.

The patch also adds a new routines to find and put SMB sessions and
that properly take and put references under the lock.
Signed-off-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      14fbf50d
    • J
      cifs: disable sharing session and tcon and add new TCP sharing code · e7ddee90
      由 Jeff Layton 提交于 
      The code that allows these structs to be shared is extremely racy.
Disable the sharing of SMB and tcon structs for now until we can
come up with a way to do this that's race free.

We want to continue to share TCP sessions, however since they are
required for multiuser mounts. For that, implement a new (hopefully
race-free) scheme. Add a new global list of TCP sessions, and take
care to get a reference to it whenever we're dealing with one.
Signed-off-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      e7ddee90
  9. 14 11月, 2008 1 次提交
  11. 29 10月, 2008 1 次提交
    • S
      [CIFS] Reduce number of socket retries in large write path · edf1ae40
      由 Steve French 提交于 
      CIFS in some heavy stress conditions cifs could get EAGAIN
repeatedly in smb_send2 which led to repeated retries and eventually
failure of large writes which could lead to data corruption.

There are three changes that were suggested by various network
developers:

1) convert cifs from non-blocking to blocking tcp sendmsg
(we left in the retry on failure)
2) change cifs to not set sendbuf and rcvbuf size for the socket
(let tcp autotune the buffer sizes since that works much better
in the TCP stack now)
3) if we have a partial frame sent in smb_send2, mark the tcp
session as invalid (close the socket and reconnect) so we do
not corrupt the remaining part of the SMB with the beginning
of the next SMB.

This does not appear to hurt performance measurably and has
been run in various scenarios, but it definately removes
a corruption that we were seeing in some high stress
test cases.
Acked-by: NShirish Pargaonkar <shirishp@us.ibm.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      edf1ae40
  13. 25 9月, 2008 1 次提交
  15. 24 9月, 2008 1 次提交
  17. 06 8月, 2008 3 次提交
  19. 15 5月, 2008 2 次提交
  21. 13 5月, 2008 1 次提交
  23. 09 5月, 2008 1 次提交
  25. 29 4月, 2008 1 次提交
  27. 25 4月, 2008 1 次提交
  29. 16 4月, 2008 1 次提交
  31. 15 3月, 2008 1 次提交
    • S
      [CIFS] file create with acl support enabled is slow · 8b1327f6
      由 Steve French 提交于 
      Shirish Pargaonkar noted:
With cifsacl mount option, when a file is created on the Windows server,
exclusive oplock is broken right away because the get cifs acl code
again opens the file to obtain security descriptor.
The client does not have the newly created file handle or inode in any
of its lists yet so it does not respond to oplock break and server waits for
its duration and then responds to the second open. This slows down file
creation signficantly.  The fix is to pass the file descriptor to the get
cifsacl code wherever available so that get cifs acl code does not send
second open (NT Create ANDX) and oplock is not broken.

CC: Shirish Pargaonkar <shirishp@us.ibm.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      8b1327f6
  33. 11 3月, 2008 1 次提交
  35. 13 2月, 2008 2 次提交
  37. 08 2月, 2008 1 次提交
  39. 25 1月, 2008 2 次提交
  41. 31 12月, 2007 1 次提交
  43. 17 11月, 2007 3 次提交
  45. 14 11月, 2007 1 次提交
    • S
      [CIFS] Fix buffer overflow if server sends corrupt response to small · 133672ef
      由 Steve French 提交于 
      request

In SendReceive() function in transport.c - it memcpy's
message payload into a buffer passed via out_buf param. The function
assumes that all buffers are of size (CIFSMaxBufSize +
MAX_CIFS_HDR_SIZE) , unfortunately it is also called with smaller
(MAX_CIFS_SMALL_BUFFER_SIZE) buffers.  There are eight callers
(SMB worker functions) which are primarily affected by this change:

TreeDisconnect, uLogoff, Close, findClose, SetFileSize, SetFileTimes,
Lock and PosixLock

CC: Dave Kleikamp <shaggy@austin.ibm.com>
CC: Przemyslaw Wegrzyn <czajnik@czajsoft.pl>
Acked-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      133672ef
  47. 03 11月, 2007 1 次提交
    • J
      [CIFS] implement upcalls for SPNEGO blob via keyctl API · 09fe7ba7
      由 Jeff Layton 提交于 
      Add routines to handle upcalls to userspace via keyctl for the purpose
of getting a SPNEGO blob for a particular uid and server combination.

Clean up the Makefile a bit and set it up to only compile cifs_spnego
if CONFIG_CIFS_UPCALL is set. Also change CONFIG_CIFS_UPCALL to depend
on CONFIG_KEYS rather than CONFIG_CONNECTOR.

cifs_spnego.h defines the communications between kernel and userspace
and is intended to be shared with userspace programs.
Signed-off-by: NJeff Layton <jlayton@redhat.com>
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      09fe7ba7
  49. 31 10月, 2007 1 次提交
  51. 26 10月, 2007 1 次提交
  53. 20 10月, 2007 1 次提交
  55. 19 10月, 2007 1 次提交
  57. 04 10月, 2007 1 次提交
  59. 26 9月, 2007 1 次提交
  61. 31 8月, 2007 1 次提交