linux/include/rdma, branch v4.2

IB: Add rdma_cap_ib_switch helper and use where appropriate

2015-07-14T17:20:08Z

Persuant to Liran's comments on node_type on linux-rdma mailing list: In an effort to reform the RDMA core and ULPs to minimize use of node_type in struct ib_device, an additional bit is added to struct ib_device for is_switch (IB switch). This is needed to be initialized by any IB switch device driver. This is a NEW requirement on such device drivers which are all "out of tree". In addition, an ib_switch helper was added to ib_verbs.h based on the is_switch device bit rather than node_type (although those should be consistent). The RDMA core (MAD, SMI, agent, sa_query, multicast, sysfs) as well as (IPoIB and SRP) ULPs are updated where appropriate to use this new helper. In some cases, the helper is now used under the covers of using rdma_[start end]_port rather than the open coding previously used. Reviewed-by: Sean Hefty Reviewed-By: Jason Gunthorpe Reviewed-by: Ira Weiny Tested-by: Ira Weiny Signed-off-by: Hal Rosenstock Signed-off-by: Doug Ledford

IB/mad: Add final OPA MAD processing

2015-06-12T18:49:18Z

For devices which support OPA MADs 1) Use previously defined SMP support functions. 2) Pass correct base version to ib_create_send_mad when processing OPA MADs. 3) Process out_mad_key_index returned by agents for a response. This is necessary because OPA SMP packets must carry a valid pkey. 4) Carry the correct segment size (OPA vs IBTA) of RMPP messages within ib_mad_recv_wc. 5) Handle variable length OPA MADs by: * Adjusting the 'fake' WC for locally routed SMP's to represent the proper incoming byte_len * out_mad_size is used from the local HCA agents 1) when sending agent responses on the wire 2) when passing responses through the local_completions function NOTE: wc.byte_len includes the GRH length and therefore is different from the in_mad_size specified to the local HCA agents. out_mad_size should _not_ include the GRH length as it is added Signed-off-by: Ira Weiny Signed-off-by: Doug Ledford

IB/mad: Add partial Intel OPA MAD support

2015-06-12T18:49:17Z

Add OPA SMP processing functionality. Define the new OPA SMP format, create support functions for this format using the previously defined helper functions as appropriate. These functions are defined in this patch and used in the final OPA MAD support patch. Signed-off-by: Ira Weiny Signed-off-by: Doug Ledford

IB/mad: Add partial Intel OPA MAD support

2015-06-12T18:49:17Z

This patch is the first of 3 which adds processing of OPA MADs 1) Add Intel Omni-Path Architecture defines 2) Increase max management version to accommodate OPA 3) update ib_create_send_mad If the device supports OPA MADs and the MAD being sent is the OPA base version alter the MAD size and sg lengths as appropriate Signed-off-by: Ira Weiny Signed-off-by: Doug Ledford

IB/core: Add OPA MAD core capability flag

2015-06-12T18:49:17Z

Add OPA MAD support flags to the core capability immutable flags. In addition add the rdma_cap_opa_mad helper function for core functions to use to detect OPA MAD support. OPA MADs share a common header with IBTA MADs but with some differences for increased performance. Sharing a common header with IBTA MADs allows us to share most of the MAD processing code when dealing with OPA MADs in addition to supporting some IBTA MADs on OPA devices. OPA MADs differ in the following ways: 1) MADs are variable size up to 2K IBTA defined MADs remain fixed at 256 bytes 2) OPA SMPs must carry valid PKeys 3) OPA SMP packets are a different format The MAD stack will use this new functionality to determine if OPA MAD processing should occur on individual device ports. Signed-off-by: Ira Weiny Signed-off-by: Doug Ledford

IB/mad: Add support for additional MAD info to/from drivers

2015-06-12T18:49:17Z

In order to support alternate sized MADs (and variable sized MADs on OPA devices) add in/out MAD size parameters to the process_mad core call. In addition, add an out_mad_pkey_index to communicate the pkey index the driver wishes the MAD stack to use when sending OPA MAD responses. The out MAD size and the out MAD PKey index are required by the MAD stack to generate responses on OPA devices. Furthermore, the in and out MAD parameters are made generic by specifying them as ib_mad_hdr rather than ib_mad. Drivers are modified as needed and are protected by BUG_ON flags if the MAD sizes passed to them is incorrect. Signed-off-by: Ira Weiny Signed-off-by: Doug Ledford

IB/core: Add ability for drivers to report an alternate MAD size.

2015-06-12T18:49:17Z

Add max MAD size to the device immutable data set and have all drivers that support MADs report the current IB MAD size (IB_MGMT_MAD_SIZE) to the core. Verify MAD size data in both the MAD core and when reading the immutable data. OPA drivers will report alternate MAD sizes in subsequent patches. Signed-off-by: Ira Weiny Signed-off-by: Doug Ledford

IB/mad: Support alternate Base Versions when creating MADs

2015-06-12T18:49:17Z

In preparation to support the new OPA MAD Base version, add a base version parameter to ib_create_send_mad and set it to IB_MGMT_BASE_VERSION for current users. Definition of the new base version and it's processing will occur in later patches. Signed-off-by: Ira Weiny Signed-off-by: Doug Ledford

IB/core: Pass hardware specific data in query_device

2015-06-12T18:49:10Z

Vendors should be able to pass vendor specific data to/from user-space via query_device uverb. In order to do this, we need to pass the vendors' specific udata. Signed-off-by: Matan Barak Signed-off-by: Or Gerlitz Signed-off-by: Doug Ledford

IB/core: Add timestamp_mask and hca_core_clock to query_device

2015-06-12T18:49:10Z

In order to expose timestamp we need to expose two new attributes in query_device to be used for CQ completion time-stamping: timestamp_mask - how many bits are valid in the timestamp, where timestamp values could be 64bits the most. hca_core_clock - timestamp is given in HW cycles, the frequency in KHZ units of the HCA, necessary in order to convert cycles to seconds. This is added both to ib_query_device and its respective uverbs counterpart. Signed-off-by: Matan Barak Signed-off-by: Or Gerlitz Signed-off-by: Doug Ledford