linux-stable.git/drivers/infiniband/ulp/iser, branch linux-4.5.y

IB/iser: Support the remote invalidation exception

2015-12-27T00:27:10+00:00

Declare that we support remote invalidation in case we are:
1. using fastreg method
2. always registering memory

Detect the invalidated rkey from the work completion info so we
won't invalidate it locally. The spec mandates that we must not rely
on the target remote invalidate our rkey so we must check it upon
a receive (scsi response) completion.

Signed-off-by: Jenny Derzhavetz 
Signed-off-by: Sagi Grimberg 
Signed-off-by: Doug Ledford

IB/iser: Change the increment rkey flow logic

2015-12-24T05:17:36+00:00

When we enable remote invalidate support we won't want to perform
local invalidates at the same time we do today, but we still need
to get new rkeys.  So, decouple the rkey update from the local
invalidate and tie it to memory reg instead.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Jenny Derzhavetz 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Doug Ledford

IB/iser,isert: Create and use new shared header

2015-12-24T05:17:35+00:00

The iser RDMA_CM negotiation protocol is shared by
the initiator and the target, so have a shared header
for the defines and structure. Move relevant items from
the initiator and target headers.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Jenny Derzhavetz 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Doug Ledford

IB/iser: set intuitive values for mr_valid

2015-12-24T05:17:34+00:00

This parameter is described as "is mr valid indicator".
In other words, it indicates whether memory registration
is valid or not. So intuitive values would be:
mr_valid=True, when memory registration is valid and
mr_valid=False otherwise.

Signed-off-by: Jenny Derzhavetz 
Signed-off-by: Sagi Grimberg 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Doug Ledford

IB/iser: Don't register memory for all immediate data writes

2015-12-24T05:17:34+00:00

When all the task data is sent as immediate data, we are
allowed to use the local_dma_lkey as it is not sent to
the wire.

Signed-off-by: Jenny Derzhavetz 
Signed-off-by: Sagi Grimberg 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Doug Ledford

IB/iser: Reuse ib_sg_to_pages

2015-12-24T05:17:34+00:00

We have in iser iser_sg_to_page_vec which has exactly
the same role as ib_sg_to_pages. Customize the page_vec
to hold a fake MR so we can reuse ib_sg_to_pages.

Signed-off-by: Sagi Grimberg 
Signed-off-by: Christoph Hellwig 
Signed-off-by: Doug Ledford

IB/iser: Fix module init not cleaning up on error flow

2015-12-24T05:17:33+00:00

Destroy workqueue on transport register error, also
release kmem cache on workqueue allocation error.

Signed-off-by: Roi Dayan 
Signed-off-by: Sagi Grimberg 
Reviewed-by: Christoph Hellwig 
Signed-off-by: Doug Ledford

IB/iser: constify iser_reg_ops structure

2015-12-24T05:17:33+00:00

The iser_reg_ops structures are never modified, so declare them as const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall 
Acked-by: Sagi Grimberg 
Signed-off-by: Doug Ledford

Merge branches '4.5/Or-cleanup' and '4.5/rdma-cq' into k.o/for-4.5

2015-12-22T22:03:15+00:00

Signed-off-by: Doug Ledford 

Conflicts:
	drivers/infiniband/ulp/iser/iser_verbs.c

IB/ulps: Avoid calling ib_query_device

2015-12-22T19:39:00+00:00

Instead, use the cached copy of the attributes present on the device.

Signed-off-by: Or Gerlitz 
Signed-off-by: Doug Ledford