RDMA/core: Add SRQ type field

Currently, there is only a single ("basic") type of SRQ, but with XRC
support we will add a second.  Prepare for this by defining an SRQ type
and setting all current users to IB_SRQT_BASIC.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
index 365fe0e1419..cb9a0b97680 100644
--- a/drivers/infiniband/hw/mthca/mthca_provider.c
+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
@@ -438,6 +438,9 @@ static struct ib_srq *mthca_create_srq(struct ib_pd *pd,
         struct mthca_srq *srq;
         int err;
 
+        if (init_attr->srq_type != IB_SRQT_BASIC)
+                return ERR_PTR(-ENOSYS);
+
         srq = kmalloc(sizeof *srq, GFP_KERNEL);
         if (!srq)
                 return ERR_PTR(-ENOMEM);