linux-toradex.git/include/scsi/iscsi_if.h, branch v2.6.32.21

[SCSI] iscsi_tcp: add new conn error to indicate tcp conn closed

2009-09-05T14:42:47+00:00

If a target closed the connection, we will detect it in the
state_changed or data_ready callout. This adds a new conn
error value to use for this problem, so it is not confused
with when the initiator throws a conn error and drops
the connection.

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

[SCSI] iscsi class: Add new NETLINK_ISCSI messages for cnic/bnx2i driver.

2009-06-09T15:22:35+00:00

Add ISCSI_NETLINK messages for iSCSI NICs to get information such as
path from userspace.  Original iscsid messages are now always sent as
multicast to group 1.  The new messages are sent to group 2.

The multicast changes were made by Mike Christie.

Signed-off-by: Michael Chan 
Signed-off-by: Benjamin Li 
Signed-off-by: Mike Christie 
Signed-off-by: James Bottomley

[SCSI] iscsi: pass ep connect shost

2009-05-23T20:44:09+00:00

When we create the tcp/ip connection by calling ep_connect, we currently
just go by the routing table info.

I think there are two problems with this.

1. Some drivers do not have access to a routing table. Some drivers like
qla4xxx do not even know about other ports.

2. If you have two initiator ports on the same subnet, the user may have
set things up so that session1 was supposed to be run through port1. and
session2 was supposed to be run through port2. It looks like we could
end with both sessions going through one of the ports.

Fixes for cxgb3i from Karen Xie.

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

[SCSI] libiscsi_tcp: support padding offload

2008-12-29T17:24:23+00:00

cxgb3i does not offload the processing of the header,
but it will always process the padding. This patch
adds a padding offload flag to detect when the LLD
supports this.

The patch also modifies the header processing so that
we do not try to read/bypass the header dugest in the
skb. cxgb3i will not include it with the header like
with other offload cards.

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

[SCSI] iscsi_tcp: prepare helpers for LLDs that can offload some operations

2008-12-29T17:24:20+00:00

cxgb3i is unlike qla4xxx and bnx2i in that it does not offload entire
scsi commands or iscsi sequences. Instead it only offloads the transfer
of a ISCSI DATA_IN pdu's data, the digests and padding. This patch fixes up the
iscsi tcp recv path so that it exports its skb recv processing so
cxgb3i and other drivers can call them. All they have to do is pass
the function the skb with the hdr or data pdu header and this function
will do the rest.

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

[SCSI] iscsi_tcp: return a descriptive error value during connection errors

2008-10-13T13:29:00+00:00

The segment->done functions return a iscsi error value which gives
a lot more info than conn failed, so this patch has us return
that value. I also add a new one for xmit failures.

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

[SCSI] libiscsi: Support drivers initiating session removal

2008-10-13T13:28:59+00:00

If the driver knows when hardware is removed like with cxgb3i,
bnx2i, qla4xxx and iser then we will want to remove the sessions/devices
that are bound to that device before removing the host.

cxgb3i and in the future bnx2i will remove the host and that will
remove all the sessions on the hba. iser can call iscsi_kill_session
when it gets an event that indicates that a hca is removed.
And when qla4xxx is hooked in to the lib (it is only hooked into
the class right now) it can call iscsi remove host like the
partial offload card drivers.

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

[SCSI] iscsi class: Add session initiatorname and ifacename sysfs attrs.

2008-07-12T13:22:21+00:00

This adds two new attrs used for creating initiator ports and
binding sessions to hardware.

The session level initiatorname:

Since bnx2i does a scsi_host per host device, we need to add the
iface initiator port settings on the session, so we can create
multiple initiator ports (each with different inames) per device/scsi_host.

The current iname reflects that qla4xxx can have one iname per hba, and we are
allocating a host per session for software. The iname on the host will
remain so we can export and set the hba level qla4xxx setting.

The ifacename attr:

To bind a session to a some peice of hardware in userspace we maintain
some mappings, but during boot or iscsid restart (iscsid contains the user
space part of the driver) we need to be able to figure out which of those
host mappings abstractions maps to certain sessions. This patch adds
a ifacename attr, which userspace can set to id the host side of the
endpoint across pivot_roots and iscsid restarts.

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

[SCSI] iscsi class: add endpoint class

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

Add sysfs representation for the endpoint, so userspace can match the
host and session to the endpoint. This will allow us to set the host's
parent correctly at host creation time.

The next patches will convert tcp and iser, and fix iser's dma_mask
bug.

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

[SCSI] iscsi: remove session and host binding in libiscsi

2008-07-12T13:22:16+00:00

bnx2i allocates a host per netdevice but will use libiscsi,
so this unbinds the session from the host in that code.

This will also be useful for the iser parent device dma settings
fixes.

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