IB/rdmavt: Validate remote_addr during loopback atomic tests

commit 4028bccb003cf67e46632dee7f97ddc5d7b6e685 upstream.

The rdma-core test suite sends an unaligned remote address and expects a
failure.

ERROR: test_atomic_non_aligned_addr (tests.test_atomic.AtomicTest)

The qib/hfi1 rc handling validates properly, but the test has the client
and server on the same system.

The loopback of these operations is a distinct code path.

Fix by syntaxing the proposed remote address in the loopback code path.

Fixes: 15703461533a ("IB/{hfi1, qib, rdmavt}: Move ruc_loopback to rdmavt")
Link: https://lore.kernel.org/r/1642584489-141005-1-git-send-email-mike.marciniszyn@cornelisnetworks.com
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/infiniband/sw/rdmavt/qp.c b/drivers/infiniband/sw/rdmavt/qp.c
index 3305f27..ae50b56 100644 (file)
--- a/drivers/infiniband/sw/rdmavt/qp.c
+++ b/drivers/infiniband/sw/rdmavt/qp.c
@@ -3073,6 +3073,8 @@ do_write:
        case IB_WR_ATOMIC_FETCH_AND_ADD:
                if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC)))
                        goto inv_err;
+               if (unlikely(wqe->atomic_wr.remote_addr & (sizeof(u64) - 1)))
+                       goto inv_err;
                if (unlikely(!rvt_rkey_ok(qp, &qp->r_sge.sge, sizeof(u64),
                                          wqe->atomic_wr.remote_addr,
                                          wqe->atomic_wr.rkey,