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IB/hfi1: Allow for non-double word multiple message sizes for user SDMA

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The driver pads non-double word multiple message sizes but it doesn't
account for this padding when the packet length is calculated. Also, the
data length is miscalculated for message sizes less than 4 bytes due to
the bit representation in LRH. And there's a check for non-double word
multiple message sizes that prevents these messages from being sent.
This patch fixes length miscalculations and enables the functionality to
send non-double word multiple message sizes.

Reviewed-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Ira Weiny 2016-07-27 21:08:42 -04:00 • committed by Doug Ledford
commit c492980269
2 changed files with 23 additions and 10 deletions
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include/uapi/rdma/hfi/hfi1_user.h
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@ -75,7 +75,7 @@
* may not be implemented; the user code must deal with this if it
* cares, or it must abort after initialization reports the difference.
*/
#define HFI1_USER_SWMINOR 1
#define HFI1_USER_SWMINOR 2
/*
* We will encode the major/minor inside a single 32bit version number.