IB/ehca: add Shared Receive Queue support

Support SRQs on eHCA2. Since an SRQ is a QP for eHCA2, a lot of code
(structures, create, destroy, post_recv) can be shared between QP and SRQ.

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/infiniband/hw/ehca/ehca_uverbs.c b/drivers/infiniband/hw/ehca/ehca_uverbs.c
index 73db920b6945..d8fe37d56f1a 100644
--- a/drivers/infiniband/hw/ehca/ehca_uverbs.c
+++ b/drivers/infiniband/hw/ehca/ehca_uverbs.c
@@ -257,6 +257,7 @@ int ehca_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
         struct ehca_cq *cq;
         struct ehca_qp *qp;
         struct ehca_pd *pd;
+        struct ib_uobject *uobject;
 
         switch (q_type) {
         case  1: /* CQ */
@@ -304,7 +305,8 @@ int ehca_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
                         return -ENOMEM;
                 }
 
-                if (!qp->ib_qp.uobject || qp->ib_qp.uobject->context != context)
+                uobject = IS_SRQ(qp) ? qp->ib_srq.uobject : qp->ib_qp.uobject;
+                if (!uobject || uobject->context != context)
                         return -EINVAL;
 
                 ret = ehca_mmap_qp(vma, qp, rsrc_type);