[IB] mthca: Better limit checking and reporting

Check the sizes of CQs, QPs and SRQs when creating objects, and fail
instead of creating too-big queues.  Also return real limits instead
of just plausible-sounding values from mthca_query_device().

Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h
index 6e18c128af42..f106bac0f925 100644
--- a/drivers/infiniband/hw/mthca/mthca_dev.h
+++ b/drivers/infiniband/hw/mthca/mthca_dev.h
@@ -83,6 +83,8 @@ enum {
         /* Arbel FW gives us these, but we need them for Tavor */
         MTHCA_MPT_ENTRY_SIZE  =  0x40,
         MTHCA_MTT_SEG_SIZE    =  0x40,
+
+        MTHCA_QP_PER_MGM      = 4 * (MTHCA_MGM_ENTRY_SIZE / 16 - 2)
 };
 
 enum {
@@ -128,12 +130,16 @@ struct mthca_limits {
         int      num_uars;
         int      max_sg;
         int      num_qps;
+        int      max_wqes;
+        int      max_qp_init_rdma;
         int      reserved_qps;
         int      num_srqs;
+        int      max_srq_wqes;
         int      reserved_srqs;
         int      num_eecs;
         int      reserved_eecs;
         int      num_cqs;
+        int      max_cqes;
         int      reserved_cqs;
         int      num_eqs;
         int      reserved_eqs;