linux.git/net/9p, branch v2.6.36

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

2010-09-28T19:01:26+00:00

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (47 commits)
  tcp: Fix >4GB writes on 64-bit.
  net/9p: Mount only matching virtio channels
  de2104x: fix ethtool
  tproxy: check for transparent flag in ip_route_newports
  ipv6: add IPv6 to neighbour table overflow warning
  tcp: fix TSO FACK loss marking in tcp_mark_head_lost
  3c59x: fix regression from patch "Add ethtool WOL support"
  ipv6: add a missing unregister_pernet_subsys call
  s390: use free_netdev(netdev) instead of kfree()
  sgiseeq: use free_netdev(netdev) instead of kfree()
  rionet: use free_netdev(netdev) instead of kfree()
  ibm_newemac: use free_netdev(netdev) instead of kfree()
  smsc911x: Add MODULE_ALIAS()
  net: reset skb queue mapping when rx'ing over tunnel
  br2684: fix scheduling while atomic
  de2104x: fix TP link detection
  de2104x: fix power management
  de2104x: disable autonegotiation on broken hardware
  net: fix a lockdep splat
  e1000e: 82579 do not gate auto config of PHY by hardware during nominal use
  ...

net/9p: Mount only matching virtio channels

2010-09-27T22:54:44+00:00

p9_virtio_create will only compare the the channel's tag characters
against the device name till the end of the channel's tag but not till
the end of the device name. This means that if a user defines channels
with the tags foo and foobar then he would mount foo when he requested
foonot and may mount foo when he requested foobar.

Thus it is necessary to check both string lengths against each other in
case of a successful partial string match.

Signed-off-by: Sven Eckelmann 
Signed-off-by: David S. Miller

net/9p: fix memory handling/allocation in rdma_request()

2010-09-27T12:52:50+00:00

Return -ENOMEM when erroring on kmalloc and fix memory leaks when returning on error.

Signed-off-by: Davidlohr Bueso 
Reviewed-by: Aneesh Kumar K.V 
Signed-off-by: Eric Van Hensbergen

fs/9p, net/9p: memory leak fixes

2010-09-13T13:13:02+00:00

Four memory leak fixes in the 9P code.

Signed-off-by: Latchesar Ionkov 
Signed-off-by: Eric Van Hensbergen

fs/9p: destroy fid on failed remove

2010-08-02T19:28:36+00:00

9P spec says:
"It is correct to consider remove to be a clunk with the
side effect of removing the file if permissions allow. "

So even if remove fails we need to destroy the fid.

Without this patch an rmdir on a directory with contents leave
the new cloned directory fid fid attached to fidlist. On umount
we dump the fids on the fidlist

~# rmdir /mnt2/test4/
rmdir: failed to remove `/mnt2/test4/': Directory not empty
~# umount /mnt2/
~# dmesg
[  228.474323] Found fid 3 not clunked

Signed-off-by: Aneesh Kumar K.V 
Signed-off-by: Venkateswararao Jujjuri 
Signed-off-by: Eric Van Hensbergen

net/9p: Implement TXATTRCREATE 9p call

2010-08-02T19:28:34+00:00

TXATTRCREATE:  Prepare a fid for setting xattr value on a file system object.

 size[4] TXATTRCREATE tag[2] fid[4] name[s] attr_size[8] flags[4]
 size[4] RXATTRCREATE tag[2]

txattrcreate gets a fid pointing to xattr. This fid can later be
used to set the xattr value.

flag value is derived from set Linux setxattr. The manpage says
"The flags parameter can be used to refine the semantics of the operation.
XATTR_CREATE specifies a pure create, which fails if the named attribute
exists already. XATTR_REPLACE specifies a pure replace operation, which
fails if the named attribute does not already exist. By default (no flags),
the extended attribute will be created if need be, or will simply replace
the value if the attribute exists."

The actual setxattr operation happens when the fid is clunked. At that point
the written byte count and the attr_size specified in TXATTRCREATE should be
same otherwise an error will be returned.

Signed-off-by: Aneesh Kumar K.V 
Signed-off-by: Venkateswararao Jujjuri 
Signed-off-by: Eric Van Hensbergen

net/9p: Implement attrwalk 9p call

2010-08-02T19:28:33+00:00

TXATTRWALK: Descend a ATTR namespace

 size[4] TXATTRWALK tag[2] fid[4] newfid[4] name[s]
 size[4] RXATTRWALK tag[2] size[8]

txattrwalk gets a fid pointing to xattr. This fid can later be
used to read the xattr value. If name is NULL the fid returned
can be used to get the list of extended attribute associated to
the file system object.

Signed-off-by: Aneesh Kumar K.V 
Signed-off-by: Venkateswararao Jujjuri 
Signed-off-by: Eric Van Hensbergen

9p: Implement LOPEN

2010-08-02T19:28:32+00:00

Implement 9p2000.L version of open(LOPEN) interface in 9p client.

For LOPEN, no need to convert the flags to and from 9p mode to VFS mode.

Synopsis:

    size[4] Tlopen tag[2] fid[4] mode[4]

    size[4] Rlopen tag[2] qid[13] iounit[4]

[Fix mode bit format - jvrao@linux.vnet.ibm.com]

Signed-off-by: M. Mohan Kumar 
Signed-off-by: Venkateswararao Jujjuri 
Signed-off-by: Eric Van Hensbegren

fs/9p: This patch implements TLCREATE for 9p2000.L protocol.

2010-08-02T19:28:32+00:00

SYNOPSIS

    size[4] Tlcreate tag[2] fid[4] name[s] flags[4] mode[4] gid[4]

    size[4] Rlcreate tag[2] qid[13] iounit[4]

DESCRIPTION

The Tlreate request asks the file server to create a new regular file with the
name supplied, in the directory (dir) represented by fid.
The mode argument specifies the permissions to use. New file is created with
the uid if the fid and with supplied gid.

The flags argument represent Linux access mode flags with which the caller
is requesting to open the file with. Protocol allows all the Linux access
modes but it is upto the server to allow/disallow any of these acess modes.
If the server doesn't support any of the access mode, it is expected to
return error.

Signed-off-by: Venkateswararao Jujjuri 
Signed-off-by: Eric Van Hensbergen

9p: Implement TMKDIR

2010-08-02T19:28:31+00:00

Implement TMKDIR as part of 2000.L Work

Synopsis

    size[4] Tmkdir tag[2] fid[4] name[s] mode[4] gid[4]

    size[4] Rmkdir tag[2] qid[13]

Description

    mkdir asks the file server to create a directory with given name,
    mode and gid. The qid for the new directory is returned with
    the mkdir reply message.

Note: 72 is selected as the opcode for TMKDIR from the reserved list.

Signed-off-by: M. Mohan Kumar 
Signed-off-by: Venkateswararao Jujjuri 
Signed-off-by: Eric Van Hensbergen