kernel/linux.git/drivers/infiniband/core/agent.c, branch v6.6.134

RDMA: Mark if destroy address handle is in a sleepable context

2018-12-19T23:28:03+00:00

Introduce a 'flags' field to destroy address handle callback and add a flag that marks whether the callback is executed in an atomic context or not. This will allow drivers to wait for completion instead of polling for it when it is allowed. Signed-off-by: Gal Pressman Signed-off-by: Jason Gunthorpe

IB/core: Rename ib_destroy_ah to rdma_destroy_ah

2017-05-01T18:32:43+00:00

Rename ib_destroy_ah to rdma_destroy_ah so its in sync with the rename of the ib address handle attribute Reviewed-by: Ira Weiny Reviewed-by: Don Hiatt Reviewed-by: Sean Hefty Reviewed-by: Niranjana Vishwanathapura Signed-off-by: Dasaratharaman Chandramouli Signed-off-by: Doug Ledford

IB/core: Remove debug prints after allocation failure

2016-12-03T18:12:52+00:00

The prints after [k|v][m|z|c]alloc() functions are not needed, because in case of failure, allocator will print their internal error prints anyway. Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford

IB: split struct ib_send_wr

2015-10-08T10:09:10+00:00

This patch split up struct ib_send_wr so that all non-trivial verbs use their own structure which embedds struct ib_send_wr. This dramaticly shrinks the size of a WR for most common operations: sizeof(struct ib_send_wr) (old): 96 sizeof(struct ib_send_wr): 48 sizeof(struct ib_rdma_wr): 64 sizeof(struct ib_atomic_wr): 96 sizeof(struct ib_ud_wr): 88 sizeof(struct ib_fast_reg_wr): 88 sizeof(struct ib_bind_mw_wr): 96 sizeof(struct ib_sig_handover_wr): 80 And with Sagi's pending MR rework the fast registration WR will also be down to a reasonable size: sizeof(struct ib_fastreg_wr): 64 Signed-off-by: Christoph Hellwig Reviewed-by: Bart Van Assche [srp, srpt] Reviewed-by: Chuck Lever [sunrpc] Tested-by: Haggai Eran Tested-by: Sagi Grimberg Tested-by: Steve Wise

IB: Add rdma_cap_ib_switch helper and use where appropriate

2015-07-14T17:20:08+00:00

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

2015-06-12T18:49:18+00:00

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: Convert allocations from kmem_cache to kzalloc

2015-06-12T18:49:17+00:00

This patch implements allocating alternate receive MAD buffers within the MAD stack. Support for OPA to send/recv variable sized MADs is implemented later. 1) Convert MAD allocations from kmem_cache to kzalloc kzalloc is more flexible to support devices with different sized MADs and research and testing showed that the current use of kmem_cache does not provide performance benefits over kzalloc. 2) Change struct ib_mad_private to use a flex array for the mad data 3) Allocate ib_mad_private based on the size specified by devices in rdma_max_mad_size. 4) Carry the allocated size in ib_mad_private to be used when processing ib_mad_private objects. 5) Alter DMA mappings based on the mad_size of ib_mad_private. 6) Replace the use of sizeof and static defines as appropriate 7) Add appropriate casts for the MAD data when calling processing functions. Signed-off-by: Ira Weiny Signed-off-by: Doug Ledford

IB/mad: Support alternate Base Versions when creating MADs

2015-06-12T18:49:17+00:00

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 cleanup: Add const to args - agent_send_response

2015-06-02T13:33:13+00:00

In order to support constant callers of agent_send_response we add const specifiers to the its pointer arguments. Adjust the call tree accordingly. Signed-off-by: Ira Weiny Reviewed-by: Hal Rosenstock Reviewed-by: Jason Gunthorpe Signed-off-by: Doug Ledford

IB/Verbs: Use management helper rdma_cap_ib_smi()

2015-05-18T17:35:05+00:00

Introduce helper rdma_cap_ib_smi() to help us check if the port of an IB device support Infiniband Subnet Management Interface. Signed-off-by: Michael Wang Reviewed-by: Ira Weiny Tested-by: Ira Weiny Reviewed-by: Sean Hefty Reviewed-by: Jason Gunthorpe Tested-by: Doug Ledford Signed-off-by: Doug Ledford