diff options
| author | Steve Wise <swise@opengridcomputing.com> | 2013-08-06 19:34:38 +0400 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2013-08-13 22:55:47 +0400 |
| commit | b298881fcf52b04f073d64e4c584ac050506d7b9 (patch) | |
| tree | 6f808e3798630bfafe80b49eb5226e97d9470aca /drivers/infiniband | |
| parent | b38a0ad8ec1129bc2fdadc3baed45ff70d5726e2 (diff) | |
| download | linux-b298881fcf52b04f073d64e4c584ac050506d7b9.tar.xz | |
RDMA/cxgb4: Always do GTS write if cidx_inc == CIDXINC_MASK
When polling, we do a GTS update if the accumulated cidx_inc == the CQ
depth / 16. However, if the CQ is large enough, Cq depth / 16 exceeds
the size of the field in the GTS word. So we also need to update if
cidx_inc hits CIDXINC_MASK to avoid overflowing the field.
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/t4.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/cxgb4/t4.h b/drivers/infiniband/hw/cxgb4/t4.h index 3a6a289b9d3e..1272dfe056f5 100644 --- a/drivers/infiniband/hw/cxgb4/t4.h +++ b/drivers/infiniband/hw/cxgb4/t4.h @@ -531,7 +531,7 @@ static inline void t4_swcq_consume(struct t4_cq *cq) static inline void t4_hwcq_consume(struct t4_cq *cq) { cq->bits_type_ts = cq->queue[cq->cidx].bits_type_ts; - if (++cq->cidx_inc == (cq->size >> 4)) { + if (++cq->cidx_inc == (cq->size >> 4) || cq->cidx_inc == CIDXINC_MASK) { u32 val; val = SEINTARM(0) | CIDXINC(cq->cidx_inc) | TIMERREG(7) | |