linux.git/include/scsi/libiscsi.h, branch v2.6.26

IB/iser: Count FMR alignment violations per session

2008-04-29T20:46:52+00:00

Count FMR alignment violations per session as part of the iscsi
statistics.

Signed-off-by: Eli Dorfman 
Signed-off-by: Roland Dreier

[SCSI] libiscsi: fix session age rollover and remove cid encoding

2008-02-08T00:02:37+00:00

The session age mask is only 4 bits, but session->age is 32. When
it gets larger then 15 and we try to or the bits some bits get
dropped and the check for session age in iscsi_verify_itt is useless.

The ISCSI_CID_MASK related bits are also useless since cid is always
one.

Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] iscsi: fix up iscsi printk prefix

2008-02-08T00:02:37+00:00

Some iscsi class messages have the dev_printk prefix and some libiscsi
and iscsi_tcp messages have "iscsi" or the module name as a prefix which
is normally pretty useless when trying to figure out which session
or connection the message is attached to. This patch adds iscsi lib
and class dev_printks so all messages have a common prefix that
can be used to figure out which object printed it.

Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] iscsi class, libiscsi: add iscsi sysfs session state file

2008-02-08T00:02:34+00:00

This adds a iscsi session state file which exports the session
state for both software and hardware iscsi. It also hooks libiscsi
in.

Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] libiscsi: make __iscsi_complete_pdu() static

2008-02-08T00:02:33+00:00

__iscsi_complete_pdu() can now become static.

Signed-off-by: Adrian Bunk 
Acked-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] libiscsi: fix nop handling

2008-01-12T00:28:35+00:00

During root boot and shutdown the target could send us nops.
At this time iscsid cannot be running, so the target will drop
the session and the boot or shutdown will hang.

To handle this and allow us to better control when to check the network
this patch moves the nop handling to the kernel.

Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] libiscsi: do not block session during logout

2008-01-12T00:28:28+00:00

There is not need to block the session during logout. Since
we are going to fail the commands that were blocked just fail them
immediately instead.

Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] libiscsi, iscsi_tcp: iscsi pool cleanup

2008-01-12T00:28:27+00:00

iscsi_pool_init simplified

iscsi_pool_init currently has a lot of duplicate kfree() calls it does
when some allocation fails. This patch simplifies the code a little by
using iscsi_pool_free to tear down the pool in case of an error.

iscsi_pool_init also returns a copy of the item array to the caller.
Not all callers use this array, so we make it optional.

Instead of allocating a second array and return that, allocate just one
array, of twice the size.

Update users of iscsi_pool_{init,free}

This patch drops the (now useless) second argument to
iscsi_pool_free, and updates all callers.

It also removes the ctask->r2ts array, which was never
used anyway. Since the items argument to iscsi_pool_init
is now optional, we can pass NULL instead.

Signed-off-by: Olaf Kirch 
Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] iscsi_tcp, libiscsi: initial AHS Support

2008-01-12T00:28:23+00:00

  at libiscsi generic code
  - currently code assumes a storage space of pdu header is allocated
    at llds ctask and is pointed to by iscsi_cmd_task->hdr. Here I add
    a hdr_max field pertaining to that storage, and an hdr_len that
    accumulates the current use of the pdu-header.

  - Add an iscsi_next_hdr() inline which returns the next free space
    to write new Header at. Also iscsi_next_hdr() is used to retrieve
    the address at which to write the header-digest.

  - Add iscsi_add_hdr(length). What the user do is calls iscsi_next_hdr()
    for address of the new header, than calls iscsi_add_hdr(length) with
    the size of the new header. iscsi_add_hdr() will check if space is
    available and update to the new size. length must be padded according
    to standard.

  - Add 2 padding inline helpers thanks to Olaf. Current patch does not
    use them but Following patches will.
    Also moved definition of ISCSI_PAD_LEN to iscsi_proto.h which had
    PAD_WORD_LEN that was never used anywhere.

  - Let iscsi_prep_scsi_cmd_pdu() signal an Error return since now  it is
    possible that it will fail.

  - I was tired of yet again writing a "this is a digest" comment next to
    sizeof(__u32) so I defined a new ISCSI_DIGEST_SIZE. Now I don't need
    any comments. Changed all places that used sizeof(__u32) or "4" in
    connection to a digest.

  iscsi_tcp specific code
  - At struct iscsi_tcp_cmd_task allocate maximum space allowed in
    standard for all headers following the iscsi_cmd header. and mark
    it so in iscsi_tcp_session_create()
  - At iscsi_send_cmd_hdr() retrieve the correct headers size and
    write header digest at iscsi_next_hdr().

Signed-off-by: Boaz Harrosh 
Signed-off-by: Olaf Kirch 
Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] iscsi_tcp: rewrite recv path

2008-01-12T00:28:20+00:00

Rewrite recv path. Fixes:
- data digest processing and error handling.
- ahs support.

Some fixups by Mike Christie

Signed-off-by: Olaf Kirch 
Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley