Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
 "This has been a smaller cycle than normal. One new driver was
  accepted, which is unusual, and at least one more driver remains in
  review on the list.

  Summary:

   - Driver fixes for hns, hfi1, nes, rxe, i40iw, mlx5, cxgb4,
     vmw_pvrdma

   - Many patches from MatthewW converting radix tree and IDR users to
     use xarray

   - Introduction of tracepoints to the MAD layer

   - Build large SGLs at the start for DMA mapping and get the driver to
     split them

   - Generally clean SGL handling code throughout the subsystem

   - Support for restricting RDMA devices to net namespaces for
     containers

   - Progress to remove object allocation boilerplate code from drivers

   - Change in how the mlx5 driver shows representor ports linked to VFs

   - mlx5 uapi feature to access the on chip SW ICM memory

   - Add a new driver for 'EFA'. This is HW that supports user space
     packet processing through QPs in Amazon's cloud"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (186 commits)
  RDMA/ipoib: Allow user space differentiate between valid dev_port
  IB/core, ipoib: Do not overreact to SM LID change event
  RDMA/device: Don't fire uevent before device is fully initialized
  lib/scatterlist: Remove leftover from sg_page_iter comment
  RDMA/efa: Add driver to Kconfig/Makefile
  RDMA/efa: Add the efa module
  RDMA/efa: Add EFA verbs implementation
  RDMA/efa: Add common command handlers
  RDMA/efa: Implement functions that submit and complete admin commands
  RDMA/efa: Add the ABI definitions
  RDMA/efa: Add the com service API definitions
  RDMA/efa: Add the efa_com.h file
  RDMA/efa: Add the efa.h header file
  RDMA/efa: Add EFA device definitions
  RDMA: Add EFA related definitions
  RDMA/umem: Remove hugetlb flag
  RDMA/bnxt_re: Use core helpers to get aligned DMA address
  RDMA/i40iw: Use core helpers to get aligned DMA address within a supported page size
  RDMA/verbs: Add a DMA iterator to return aligned contiguous memory blocks
  RDMA/umem: Add API to find best driver supported page size in an MR
  ...

1 files changed, 17 insertions, 26 deletions

diff --git a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_srq.c b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_srq.c
index 951d9d68107a..6cac0c88cf39 100644
--- a/drivers/infiniband/hw/vmw_pvrdma/pvrdma_srq.c
+++ b/drivers/infiniband/hw/vmw_pvrdma/pvrdma_srq.c
@@ -94,19 +94,18 @@ int pvrdma_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
  * @init_attr: shared receive queue attributes
  * @udata: user data
  *
- * @return: the ib_srq pointer on success, otherwise returns an errno.
+ * @return: 0 on success, otherwise returns an errno.
  */
-struct ib_srq *pvrdma_create_srq(struct ib_pd *pd,
-				 struct ib_srq_init_attr *init_attr,
-				 struct ib_udata *udata)
+int pvrdma_create_srq(struct ib_srq *ibsrq, struct ib_srq_init_attr *init_attr,
+		      struct ib_udata *udata)
 {
-	struct pvrdma_srq *srq = NULL;
-	struct pvrdma_dev *dev = to_vdev(pd->device);
+	struct pvrdma_srq *srq = to_vsrq(ibsrq);
+	struct pvrdma_dev *dev = to_vdev(ibsrq->device);
 	union pvrdma_cmd_req req;
 	union pvrdma_cmd_resp rsp;
 	struct pvrdma_cmd_create_srq *cmd = &req.create_srq;
 	struct pvrdma_cmd_create_srq_resp *resp = &rsp.create_srq_resp;
-	struct pvrdma_create_srq_resp srq_resp = {0};
+	struct pvrdma_create_srq_resp srq_resp = {};
 	struct pvrdma_create_srq ucmd;
 	unsigned long flags;
 	int ret;
@@ -115,31 +114,25 @@ struct ib_srq *pvrdma_create_srq(struct ib_pd *pd,
 		/* No support for kernel clients. */
 		dev_warn(&dev->pdev->dev,
 			 "no shared receive queue support for kernel client\n");
-		return ERR_PTR(-EOPNOTSUPP);
+		return -EOPNOTSUPP;
 	}
 
 	if (init_attr->srq_type != IB_SRQT_BASIC) {
 		dev_warn(&dev->pdev->dev,
 			 "shared receive queue type %d not supported\n",
 			 init_attr->srq_type);
-		return ERR_PTR(-EINVAL);
+		return -EINVAL;
 	}
 
 	if (init_attr->attr.max_wr  > dev->dsr->caps.max_srq_wr ||
 	    init_attr->attr.max_sge > dev->dsr->caps.max_srq_sge) {
 		dev_warn(&dev->pdev->dev,
 			 "shared receive queue size invalid\n");
-		return ERR_PTR(-EINVAL);
+		return -EINVAL;
 	}
 
 	if (!atomic_add_unless(&dev->num_srqs, 1, dev->dsr->caps.max_srq))
-		return ERR_PTR(-ENOMEM);
-
-	srq = kmalloc(sizeof(*srq), GFP_KERNEL);
-	if (!srq) {
-		ret = -ENOMEM;
-		goto err_srq;
-	}
+		return -ENOMEM;
 
 	spin_lock_init(&srq->lock);
 	refcount_set(&srq->refcnt, 1);
@@ -181,7 +174,7 @@ struct ib_srq *pvrdma_create_srq(struct ib_pd *pd,
 	cmd->hdr.cmd = PVRDMA_CMD_CREATE_SRQ;
 	cmd->srq_type = init_attr->srq_type;
 	cmd->nchunks = srq->npages;
-	cmd->pd_handle = to_vpd(pd)->pd_handle;
+	cmd->pd_handle = to_vpd(ibsrq->pd)->pd_handle;
 	cmd->attrs.max_wr = init_attr->attr.max_wr;
 	cmd->attrs.max_sge = init_attr->attr.max_sge;
 	cmd->attrs.srq_limit = init_attr->attr.srq_limit;
@@ -204,21 +197,20 @@ struct ib_srq *pvrdma_create_srq(struct ib_pd *pd,
 	/* Copy udata back. */
 	if (ib_copy_to_udata(udata, &srq_resp, sizeof(srq_resp))) {
 		dev_warn(&dev->pdev->dev, "failed to copy back udata\n");
-		pvrdma_destroy_srq(&srq->ibsrq);
-		return ERR_PTR(-EINVAL);
+		pvrdma_destroy_srq(&srq->ibsrq, udata);
+		return -EINVAL;
 	}
 
-	return &srq->ibsrq;
+	return 0;
 
 err_page_dir:
 	pvrdma_page_dir_cleanup(dev, &srq->pdir);
 err_umem:
 	ib_umem_release(srq->umem);
 err_srq:
-	kfree(srq);
 	atomic_dec(&dev->num_srqs);
 
-	return ERR_PTR(ret);
+	return ret;
 }
 
 static void pvrdma_free_srq(struct pvrdma_dev *dev, struct pvrdma_srq *srq)
@@ -246,10 +238,11 @@ static void pvrdma_free_srq(struct pvrdma_dev *dev, struct pvrdma_srq *srq)
 /**
  * pvrdma_destroy_srq - destroy shared receive queue
  * @srq: the shared receive queue to destroy
+ * @udata: user data or null for kernel object
  *
  * @return: 0 for success.
  */
-int pvrdma_destroy_srq(struct ib_srq *srq)
+void pvrdma_destroy_srq(struct ib_srq *srq, struct ib_udata *udata)
 {
 	struct pvrdma_srq *vsrq = to_vsrq(srq);
 	union pvrdma_cmd_req req;
@@ -268,8 +261,6 @@ int pvrdma_destroy_srq(struct ib_srq *srq)
 			 ret);
 
 	pvrdma_free_srq(dev, vsrq);
-
-	return 0;
 }
 
 /**