linux.git/include/rdma, branch v4.4-rc2

IB/core, cma: Make __attribute_const__ declarations sparse-friendly

2015-10-30T21:57:49+00:00

Move the __attribute_const__ declarations such that sparse understands
that these apply to the function itself and not to the return type.
This avoids that sparse reports error messages like the following:

drivers/infiniband/core/verbs.c:73:12: error: symbol 'ib_event_msg' redeclared with different type (originally declared at include/rdma/ib_verbs.h:470) - different modifiers

Fixes: 2b1b5b601230 ("IB/core, cma: Nice log-friendly string helpers")
Signed-off-by: Bart Van Assche 
Cc: Sagi Grimberg 
Reviewed-by: Sagi Grimberg 
Signed-off-by: Doug Ledford

IB/core: Remove old fast registration API

2015-10-29T15:43:47+00:00

No callers and no providers left, go ahead and remove it.

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

IB/core: Introduce new fast registration API

2015-10-29T02:27:17+00:00

The new fast registration  verb ib_map_mr_sg receives a scatterlist
and converts it to a page list under the verbs API thus hiding
the specific HW mapping details away from the consumer.

The provider drivers are provided with a generic helper ib_sg_to_pages
that converts a scatterlist into a vector of page addresses. The
drivers can still perform any HW specific page address setting
by passing a set_page function pointer which will be invoked for
each page address. This allows drivers to avoid keeping a shadow
page vectors and convert them to HW specific translations by doing
extra copies.

This API will allow ULPs to remove the duplicated code of constructing
a page vector from a given sg list.

The send work request ib_reg_wr also shrinks as it will contain only
mr, key and access flags in addition.

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

Merge branch 'wr-cleanup' into k.o/for-4.4

2015-10-29T02:23:34+00:00

IB/cma: Add support for network namespaces

2015-10-28T16:32:48+00:00

Add support for network namespaces in the ib_cma module. This is
accomplished by:

1. Adding network namespace parameter for rdma_create_id. This parameter is
   used to populate the network namespace field in rdma_id_private.
   rdma_create_id keeps a reference on the network namespace.
2. Using the network namespace from the rdma_id instead of init_net inside
   of ib_cma, when listening on an ID and when looking for an ID for an
   incoming request.
3. Decrementing the reference count for the appropriate network namespace
   when calling rdma_destroy_id.

In order to preserve the current behavior init_net is passed when calling
from other modules.

Signed-off-by: Guy Shapiro 
Signed-off-by: Haggai Eran 
Signed-off-by: Yotam Kenneth 
Signed-off-by: Shachar Raindel 
Signed-off-by: Doug Ledford

IB/addr: Pass network namespace as a parameter

2015-10-28T16:32:47+00:00

Add network namespace support to the ib_addr module. For that, all the
address resolution and matching should be done using the appropriate
namespace instead of init_net.

This is achieved by:

1. Adding an explicit network namespace argument to exported function that
   require a namespace.
2. Saving the namespace in the rdma_addr_client structure.
3. Using it when calling networking functions.

In order to preserve the behavior of calling modules, &init_net is
passed as the parameter in calls from other modules. This is modified as
namespace support is added on more levels.

Signed-off-by: Haggai Eran 
Signed-off-by: Yotam Kenneth 
Signed-off-by: Shachar Raindel 
Signed-off-by: Guy Shapiro 
Signed-off-by: Doug Ledford

IB/core: Remove smac and vlan id from path record

2015-10-22T03:48:18+00:00

The GID cache accompanies every GID with attributes.
The GID attributes link the GID with its netdevice, which could be
resolved to smac and vlan id easily. Since we've added the netdevice
(ifindex and net) to the path record, storing the L2 attributes is
duplicated data and hence these attributes are removed.

Signed-off-by: Matan Barak 
Reviewed-By: Devesh Sharma 
Signed-off-by: Doug Ledford

IB/core: Remove smac and vlan id from qp_attr and ah_attr

2015-10-22T03:48:18+00:00

Smac and vlan id could be resolved from the GID attribute, and thus
these attributes aren't needed anymore. Removing them.

Signed-off-by: Matan Barak 
Reviewed-By: Devesh Sharma 
Signed-off-by: Doug Ledford

IB/core: Use GID table in AH creation and dmac resolution

2015-10-22T03:48:17+00:00

Previously, vlan id and source MAC were used from QP attributes. Since
the net device is now stored in the GID attributes, they could be used
instead of getting this information from the QP attributes.

IB_QP_SMAC, IB_QP_ALT_SMAC, IB_QP_VID and IB_QP_ALT_VID were removed
because there is no known libibverbs that uses them.

This commit also modifies the vendors (mlx4, ocrdma) drivers in order
to use the new approach.

ocrdma driver changes were done by Somnath Kotur 

Signed-off-by: Matan Barak 
Signed-off-by: Doug Ledford

IB/cache: Add ib_find_gid_by_filter cache API

2015-10-22T03:48:17+00:00

GID cache API users might want to search for GIDs with specific
attributes rather than just specifying GID, net device and port.
This is used in a later patch, where we find the sgid index by
L2 Ethernet attributes.

Signed-off-by: Matan Barak 
Reviewed-By: Devesh Sharma 
Signed-off-by: Doug Ledford