linux-toradex.git/net/9p, branch tegra

net/9p: Fix kernel crash with msize 512K

2011-09-06T13:17:15+00:00

With msize equal to 512K (PAGE_SIZE * VIRTQUEUE_NUM), we hit multiple
crashes. This patch fix those.

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

net/9p: Fix the msize calculation.

2011-07-23T14:32:52+00:00

msize represents the maximum PDU size that includes P9_IOHDRSZ.

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

fs/9p: add 9P2000.L unlinkat operation

2011-07-23T14:32:52+00:00

unlinkat - Remove a directory entry

size[4] Tunlinkat tag[2] dirfid[4] name[s] flag[4]
size[4] Runlinkat tag[2]

older Tremove have the below request format

size[4] Tremove tag[2] fid[4]

The remove message is used to remove a directory entry either file or directory
The remove opreation is actually a directory opertation and should ideally have
dirfid, if not we cannot represent the fid on server with anything other than
name. We will have to derive the directory name from fid in the Tremove request.

NOTE: The operation doesn't clunk the unlink fid.

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

fs/9p: add 9P2000.L renameat operation

2011-07-23T14:32:51+00:00

renameat - change name of file or directory

size[4] Trenameat tag[2] olddirfid[4] oldname[s] newdirfid[4] newname[s]
size[4] Rrenameat tag[2]

older Trename have the below request format

size[4] Trename tag[2] fid[4] newdirfid[4] name[s]

The rename message is used to change the name of a file, possibly moving it
to a new directory. The rename opreation is actually a directory opertation
and should ideally have olddirfid, if not we cannot represent the fid on server
with anything other than name. We will have to derive the old directory name
from fid in the Trename request.

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

fs/9p: Clean-up get_protocol_version() to use strcmp

2011-07-23T14:32:49+00:00

Signed-off-by: Prem Karat 
Signed-off-by: Aneesh Kumar K.V 
Signed-off-by: Eric Van Hensbergen

fs/9p: Fid is not valid after a failed clunk.

2011-07-23T14:32:48+00:00

free the fid even in case of failed clunk.

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

VirtIO can transfer VIRTQUEUE_NUM of pages.

2011-07-23T14:32:48+00:00

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

Fix the size of receive buffer packing onto VirtIO ring.

2011-07-23T14:32:47+00:00

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

9p: clean up packet dump code

2011-07-23T14:32:47+00:00

Switch to generic kernel hexdump library and cleanup macros to
be more consistent with the way we do normal debug prints.

Signed-off-by: Eric Van Hensbergen

net/9p: fix client code to fail more gracefully on protocol error

2011-07-23T14:32:29+00:00

There was a BUG_ON to protect against a bad id which could be dealt with
more gracefully.

Reported-by: Natalie Orlin 
Signed-off-by: Eric Van Hensbergen