[IB] mthca: fix posting long lists of receive work requests
In Tavor mode, when posting a long list of receive work requests, a
doorbell must be rung every 256 requests. Add code to do this when
required.
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/mthca/mthca_wqe.h b/drivers/infiniband/hw/mthca/mthca_wqe.h
index 1f4c0ff..73f1c0b 100644
--- a/drivers/infiniband/hw/mthca/mthca_wqe.h
+++ b/drivers/infiniband/hw/mthca/mthca_wqe.h
@@ -49,7 +49,8 @@
};
enum {
- MTHCA_INVAL_LKEY = 0x100
+ MTHCA_INVAL_LKEY = 0x100,
+ MTHCA_TAVOR_MAX_WQES_PER_RECV_DB = 256
};
struct mthca_next_seg {
