staging/rdma/hfi1: Fix per-VL transmit discard counts
Implement per-VL transmit counters. Not all errors can be
attributed to a particular VL, so make a best attempt.
o Extend the egress error bits used to count toward transmit
discard.
o When an egress error or send error occur, try to map back
to a VL.
o Implement a SDMA engine to VL (back) map.
o Add per-VL port transmit counters
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/staging/rdma/hfi1/hfi.h b/drivers/staging/rdma/hfi1/hfi.h
index 0fe630e..76c369a 100644
--- a/drivers/staging/rdma/hfi1/hfi.h
+++ b/drivers/staging/rdma/hfi1/hfi.h
@@ -709,8 +709,9 @@
u64 *cntrs;
/* port relative synthetic counter buffer */
u64 *scntrs;
- /* we synthesize port_xmit_discards from several egress errors */
+ /* port_xmit_discards are synthesized from different egress errors */
u64 port_xmit_discards;
+ u64 port_xmit_discards_vl[C_VL_COUNT];
u64 port_xmit_constraint_errors;
u64 port_rcv_constraint_errors;
/* count of 'link_err' interrupts from DC */