linux-toradex.git/drivers/scsi/iscsi_tcp.h, branch v3.3.2

[SCSI] iscsi_tcp: use iscsi_conn_get_addr_param libiscsi function

2011-02-24T17:41:10+00:00

This has iscsi_tcp use the iscsi_conn_get_addr_param
libiscsi function. It also drops the use of the libiscsi
session portal buffers, so they can be removed in
the next patches. Instead of copying the values
at bind time we get them during get() time. If we are
not connected userspace will now get -ENOTCONN,
so it knows that connection is disconnected instead
of a possible stale value.

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

[SCSI] iscsi_tcp: Remove unused field iscsi_conn from struct iscsi_sw_tcp_conn

2010-04-11T19:04:05+00:00

iscsi_conn is not used so remove it from iscsi_sw_tcp_conn.

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

[SCSI] iscsi_tcp: hook iscsi_tcp into new libiscsi_tcp module

2008-12-29T17:24:22+00:00

This hooks iscsi_tcp into the libiscsi_tcp module and removes
code that is now in libiscsi_tcp.

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

[SCSI] iscsi_tcp: convert to new alloc_hdr api

2008-12-29T17:24:21+00:00

This converts iscsi_tcp to the new api and modifies how
it handles r2ts.

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

[SCSI] iscsi_tcp: handle iscsi_cmd_task rename

2008-07-12T13:22:20+00:00

This converts iscsi_tcp to use the iscsi_task name.

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

[SCSI] iscsi_tcp: convert iscsi_tcp to support merged tasks

2008-07-12T13:22:19+00:00

Convert iscsi_tcp to support merged tasks.

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

[SCSI] iscsi_tcp: enable sg chaining

2008-01-12T00:28:48+00:00

The previous patches converted iscsi_tcp to support sg chaining.
This patch sets the proper flags and sets sg_table size to
4096. This allows fs io to be capped at max_sectors, but passthrough
IO to be limited by some other part of the kernel.

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

[SCSI] iscsi: convert xmit path to iscsi chunks

2008-01-12T00:28:42+00:00

Convert xmit to iscsi chunks.

from michaelc@cs.wisc.edu:

Bug fixes, more digest integration, sg chaining conversion and other
sg wrapper changes, coding style sync up, and removal of io fields,
like pdu_sent, that are not needed.

Signed-off-by: Olaf Kirch 
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