linux-stable.git/drivers/infiniband/ulp/iser, branch v3.19

IB/iser: Bump version to 1.5

2014-12-16T02:11:47+00:00

Signed-off-by: Sagi Grimberg 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier

IB/iser: DIX update

2014-12-16T02:11:46+00:00

Following few recent Block integrity updates, we align the iSER data
integrity offload settings with:

- Deprecate pi_guard module param
- Expose support for DIX type 0.
- Use scsi_transfer_length for the transfer length
- Get pi_interval, ref_tag, ref_remap, bg_type and
  check_mask setting from scsi_cmnd

Signed-off-by: Sagi Grimberg 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier

IB/iser: Micro-optimize iser_handle_wc

2014-12-16T02:11:46+00:00

Use likely() for wc.status == IB_WC_SUCCESS

Signed-off-by: Sagi Grimberg 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier

IB/iser: Micro-optimize iser logging

2014-12-16T02:11:46+00:00

And fix a checkpatch warning.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier

IB/iser: Use more completion queues

2014-12-16T02:11:45+00:00

No reason to settle with four, can use the min between device max comp
vectors and number of cores.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier

IB/iser: Remove redundant is_mr indicator

2014-12-16T02:11:45+00:00

It is enough to check mem_h pointer assignment, mem_h == NULL will
indicate that buffer is not registered using mr.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier

IB/iser: Centralize memory region invalidation to a function

2014-12-16T02:11:45+00:00

Eliminates code duplication.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier

IB/iser: Terminate connection before cleaning inflight tasks

2014-12-16T02:11:44+00:00

When closing the connection, we should first terminate the connection
(in case it was not previously terminated) to guarantee the QP is in
error state and we are done with servicing IO. Only then go ahead with
tasks cleanup via iscsi_conn_stop.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier

IB/iser: Fix race between iser connection teardown and scsi TMFs

2014-12-16T02:11:44+00:00

In certain scenarios (target kill with live IO) scsi TMFs may race
with iser RDMA teardown, which might cause NULL dereference on iser IB
device handle (which might have been freed). In this case we take a
conditional lock for TMFs and check the connection state (avoid
introducing lock contention in the IO path). This is indeed best
effort approach, but sufficient to survive multi targets sudden death
while heavy IO is inflight.

While we are on it, add a nice kernel-doc style documentation.

Reported-by: Ariel Nahum 
Signed-off-by: Sagi Grimberg 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier

IB/iser: Fix possible NULL derefernce ib_conn->device in session_create

2014-12-16T02:11:44+00:00

If rdma_cm error event comes after ep_poll but before conn_bind, we
should protect against dereferncing the device (which may have been
terminated) in session_create and conn_create (already protected)
callbacks.

Signed-off-by: Ariel Nahum 
Signed-off-by: Sagi Grimberg 
Signed-off-by: Or Gerlitz 
Signed-off-by: Roland Dreier