path: root/drivers/infiniband/core/agent.h (follow)
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2015-06-12IB/mad: Add final OPA MAD processingIra Weiny1-1/+1
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 <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-06-12IB/mad: Convert allocations from kmem_cache to kzallocIra Weiny1-2/+2
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 <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2015-06-02IB/core cleanup: Add const to args - agent_send_responseIra Weiny1-2/+2
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 <ira.weiny@intel.com> Reviewed-by: Hal Rosenstock <hal@mellanox.com> Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
2008-07-14RDMA: Remove subversion $Id tagsRoland Dreier1-2/+0
They don't get updated by git and so they're worse than useless. Signed-off-by: Roland Dreier <rolandd@cisco.com>
2007-08-03IB/mad: agent_send_response() should be voidHal Rosenstock1-3/+3
Nothing looks at the return value of agent_send_response(), so there's no point in returning anything. Signed-off-by: Hal Rosenstock <hal.rosenstock@gmail.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-10-29[PATCH] missing include in infinibandAl Viro1-0/+1
use of IS_ERR/PTR_ERR in infiniband/core/agent.c, without a portable chain of includes pulling err.h (breaks on a bunch of platforms). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-25[IB] Fix MAD layer DMA mappings to avoid touching data buffer once mappedSean Hefty1-8/+5
The MAD layer was violating the DMA API by touching data buffers used for sends after the DMA mapping was done. This causes problems on non-cache-coherent architectures, because the device doing DMA won't see updates to the payload buffers that exist only in the CPU cache. Fix this by having all MAD consumers use ib_create_send_mad() to allocate their send buffers, and moving the DMA mapping into the MAD layer so it can be done just before calling send (and after any modifications of the send buffer by the MAD layer). Tested on a non-cache-coherent PowerPC 440SPe system. Signed-off-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
2005-04-16Linux-2.6.12-rc2Linus Torvalds1-0/+55
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!