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RDMA/hfi1: Defer setting VL15 credits to link-up interrupt

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Keep VL15 credits at 0 during LNI, before link-up. Store
VL15 credits value during verify cap interrupt and set
in after link-up. This addresses an issue where VL15 MAD
packets could be sent by one side of the link before
the other side is ready to receive them.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dean Luick <dean.luick@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jakub Byczkowski <jakub.byczkowski@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Byczkowski, Jakub
2017-05-12 09:01:37 -07:00
committed by Doug Ledford
parent e4785b0633
commit b3e6b4bdbb
4 changed files with 64 additions and 19 deletions
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3
drivers/infiniband/hw/hfi1/intr.c
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@@ -130,7 +130,8 @@ void handle_linkup_change(struct hfi1_devdata *dd, u32 linkup)
* the remote values. Both sides must be using the values.
*/
if (quick_linkup || dd->icode == ICODE_FUNCTIONAL_SIMULATOR) {
set_up_vl15(dd, dd->vau, dd->vl15_init);
set_up_vau(dd, dd->vau);
set_up_vl15(dd, dd->vl15_init);
assign_remote_cm_au_table(dd, dd->vcu);
}