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  1. 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
  3. 25 9月, 2008 1 次提交
  5. 24 9月, 2008 1 次提交
  7. 06 8月, 2008 3 次提交
  9. 15 5月, 2008 2 次提交
  11. 13 5月, 2008 1 次提交
  13. 09 5月, 2008 1 次提交
  15. 29 4月, 2008 1 次提交
  17. 25 4月, 2008 1 次提交
  19. 16 4月, 2008 1 次提交
  21. 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
  23. 11 3月, 2008 1 次提交
  25. 13 2月, 2008 2 次提交
  27. 08 2月, 2008 1 次提交
  29. 25 1月, 2008 2 次提交
  31. 31 12月, 2007 1 次提交
  33. 17 11月, 2007 3 次提交
  35. 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
  37. 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
  39. 31 10月, 2007 1 次提交
  41. 26 10月, 2007 1 次提交
  43. 20 10月, 2007 1 次提交
  45. 19 10月, 2007 1 次提交
  47. 04 10月, 2007 1 次提交
  49. 26 9月, 2007 1 次提交
  51. 31 8月, 2007 1 次提交
  53. 15 7月, 2007 1 次提交
    • S
      [CIFS] Add support for new POSIX unlink · 2d785a50
      由 Steve French 提交于 
      In the cleanup phase of the dbench test, we were noticing sharing
violation followed by failed directory removals when dbench
did not close the test files before the cleanup phase started.
Using the new POSIX unlink, which Samba has supported for a few
months, avoids this.
Signed-off-by: NSteve French <sfrench@us.ibm.com>
      2d785a50
  55. 13 7月, 2007 1 次提交
  57. 09 7月, 2007 1 次提交
  59. 29 6月, 2007 1 次提交
  61. 24 4月, 2007 1 次提交
  63. 27 2月, 2007 1 次提交
  65. 14 2月, 2007 1 次提交