20 Oct, 2011
2 commits
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This has the driver use helpers for a common operation and fixes
a issue where if multiple iscsi params are sent they could be
sent at offsets that cause unaligned accesses. The nla helpers
account for the padding needed to align properly for the driver.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
Replaced the iscsi_get_next_target_id with IDA to make
target-id allocation efficient for iscsi offload driversThis patch should be applied after Jonathen Cameron Patch
"ida : simplified functions for id allocation"Signed-off-by: John Soni Jose
Signed-off-by: Mike Christie
Signed-off-by: James Bottomley
27 Aug, 2011
8 commits
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Offload drivers like qla4xxx will offload the sending of the login/logout
pdus still, so this patch adds iscsi_conn_login_event which is
used by these types of drivers to notify userspace that the connection
has changed state.It also adds a iscsi_is_session_online helper so the lld
can query the sessions state field.Signed-off-by: Manish Rangankar
Signed-off-by: Lalit Chandivade
Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
This patch adds bsg support to the iscsi class. There is only
1 request, the host vendor one, supported. It is expected that
this would be used for things like flash updates.This patch is made over this one
http://marc.info/?l=linux-scsi&m=131149780020992&w=2Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
The iscsi class currently does not support writable sysfs
attrs for LLD sysfs settings. This patch converts the
iscsi class and driver's host attrs to use the attribute
container sysfs group and the sysfs group's is_visible callout
to be able to support readable or writable sysfs attrs.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
We can replace the iface param mask with the
attr_is_visible callback.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
The iscsi class currently does not support writable sysfs
attrs for LLD sysfs settings. This patch converts the
iscsi class and driver's session attrs to use the attribute
container sysfs group and the sysfs group's is_visible callout
to be able to support readable or writable sysfs attrs.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
The iscsi class currently does not support writable sysfs
attrs for LLD sysfs settings. This patch converts the
iscsi class and drivers to use the attribute container
sysfs group and the sysfs group's is_visible callout
to be able to support readable or writable sysfs attrs.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
A iscsi host can have multiple interfaces. This patch
adds a new iface iscsi class for this. It exports the
network settings now, and will be extended to also
export iscsi initiator port settings like the isid
and initiator name for drivers that can support multiple
initiator ports.Based on patch from Lalit Chandivade.
Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
Allows user space (iscsiadm) to send down network configuration
parameters for LLD to set private network configuration on the iSCSI
adapters.Based on patch from Lalit Chandivade.
Signed-off-by: Mike Christie
Signed-off-by: James Bottomley
25 Feb, 2011
3 commits
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For drivers using the ep callbacks the addr and port
are attached to the endpoint instead of the conn.
This adds a callout to the iscsi_transport to get
ep values. It also adds locking around the get
param call to make sure that ep_disconnect does
not free the LLD's ep interconnect structs from
under us (the ep has a refcount so it will not
go away but the LLD may have structs from other
subsystems that are not allocated in the ep so
we need to protect them from getting freed).Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
The active variable on the iscsi_cls_conn is not used
so this patch removes it.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
When iscsid restarts it does not know the connection's
endpoint, so it is getting leaked. This fixes the problem
by having the iscsi class force a disconnect before a
new connection is bound.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley
28 Jul, 2010
1 commit
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wait for session to come online in eh_device_reset_handler
and eh_target_reset_handlerSigned-off-by: Mike Christie
Signed-off-by: Vikas Chaudhary
Signed-off-by: Ravi Anand
Signed-off-by: James Bottomley
09 Jun, 2009
1 commit
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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
24 May, 2009
1 commit
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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
14 Mar, 2009
2 commits
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We do not need to have llds set the host no for the session's
parent, because we know the session's parent is going to be
the host. This removes it from the session creation callback
and converts the drivers.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
We never should hit the lock up that is spit out when
lock dep is on and we logout. But we have been using the
shost work queue in a odd way. This patch has us use the
work queue for scanning instead of creating our own,
and this ends up also killing the lock dep warnings.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley
30 Dec, 2008
3 commits
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We do not need to allocate a itt for data_out, so this
passes the opcode to the alloc_pdu callout.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
bnx2i and cxgb3i need to encode LLD info in the itt so that
the firmware/hardware can process the pdu. This patch allows
the LLDs to encode info in the task->hdr->itt that they
setup in the alloc_pdu callout (any resources that are allocated
can be freed with the pdu in the cleanup_task callout). If
the LLD encodes info in the itt they should implement a
parse_pdu_itt callout. If parse_pdu_itt is not implemented
libiscsi will do the right thing for the LLD.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
cxgb3i offloads data transfers. It does not offload the entire scsi/iscsi
procssing like qla4xxx and it does not offload the iscsi sequence
processing like how bnx2i does. cxgb3i relies on iscsi_tcp for the
seqeunce handling so this changes how we transfer unsolicitied data by
adding a common r2t struct and helpers.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley
13 Oct, 2008
2 commits
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Some endpoint code was using unsigned int and some
was using uint64_t. This converts it all to uint64_t.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
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
22 Jul, 2008
1 commit
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Kobjects do not have a limit in name size since a while, so stop
pretending that they do.Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman
12 Jul, 2008
10 commits
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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 -
Currently we duplicate the list of sessions, because we were using the
test for if a session was on the host list to indicate if the session
was bound or unbound. We can instead use the target_id and fix up
the class so that drivers like bnx2i do not have to manage the target id
space.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
This is the second part of the iscsi task merging, and
all it does it rename iscsi_cmd_task to iscsi_task and
mtask/ctask to just task.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
There is no need to have the mgmt and cmd tasks separate
structs. It used to save a lot of memory when we overprealocated
memory for tasks, but the next patches will set up the
driver so in the future they can use a mempool or some other
common scsi command allocator and common tagging.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
This removes the session and conn data_size fields from the iscsi_transport.
Just pass in the value like with host allocation. This patch also makes
it so the LLD iscsi_conn data is allocated with the iscsi_cls_conn.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
This finishes the host/session unbinding, by adding some helpers
to add and remove hosts and the session they manage.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
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 -
This renames the iscsi_host to iscsi_cls_host to match the other
structs, because libiscsi wants to use the iscsi_host name in
the future.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
max_cmd_len and max_conn are not really used. max_cmd_len is
always 16 and can be set by the LLD. max_conn is always one
since we do not support MCS.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
iscsi offload (bnx2i and qla4xx) allocate a scsi host per hba,
so the session creation path needs a shost/host_no argument.
Software iscsi/iser will follow the same behabior as before
where it allcoates a host per session, but in the future iser
will probably look more like bnx2i where the host's parent is
the hardware (rnic for iser and for bnx2i it is the nic), because
it does not use a socket layer like how iscsi_tcp does.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley
06 Mar, 2008
1 commit
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For qla4xxx, we could be starting a session, but some error (network,
target, IO from a device that got started, etc) could cause the session
to fail and curring the block/unblock and state manipulation could race
with each other. This patch just has those operations done in the
single threaded iscsi eh work queue, so that way they are serialized.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley
08 Feb, 2008
4 commits
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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 -
In qla4xxx's probe it will call the iscsi session setup functions
for session that got setup on the initial start. This then makes
it easy for the iscsi class to export a helper which indicates
when those scans are done.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
This just adds iscsi session scanning which works like fc rport scanning.
The future patches will hook the drivers into Mathew Wilcox's async
scanning infrastructure, so userspace does not have to special case
iscsi and so userspace does not have to make a extra special case for
hardware iscsi root scanning.Signed-off-by: Mike Christie
Signed-off-by: James Bottomley -
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
12 Jan, 2008
1 commit
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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
