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

Pull rdma updates from Jason Gunthorpe:
 "A smaller cycle this time. Notably we see another new driver, 'Soft
  iWarp', and the deletion of an ancient unused driver for nes.

   - Revise and simplify the signature offload RDMA MR APIs

   - More progress on hoisting object allocation boiler plate code out
     of the drivers

   - Driver bug fixes and revisions for hns, hfi1, efa, cxgb4, qib,
     i40iw

   - Tree wide cleanups: struct_size, put_user_page, xarray, rst doc
     conversion

   - Removal of obsolete ib_ucm chardev and nes driver

   - netlink based discovery of chardevs and autoloading of the modules
     providing them

   - Move more of the rdamvt/hfi1 uapi to include/uapi/rdma

   - New driver 'siw' for software based iWarp running on top of netdev,
     much like rxe's software RoCE.

   - mlx5 feature to report events in their raw devx format to userspace

   - Expose per-object counters through rdma tool

   - Adaptive interrupt moderation for RDMA (DIM), sharing the DIM core
     from netdev"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (194 commits)
  RMDA/siw: Require a 64 bit arch
  RDMA/siw: Mark expected switch fall-throughs
  RDMA/core: Fix -Wunused-const-variable warnings
  rdma/siw: Remove set but not used variable 's'
  rdma/siw: Add missing dependencies on LIBCRC32C and DMA_VIRT_OPS
  RDMA/siw: Add missing rtnl_lock around access to ifa
  rdma/siw: Use proper enumerated type in map_cqe_status
  RDMA/siw: Remove unnecessary kthread create/destroy printouts
  IB/rdmavt: Fix variable shadowing issue in rvt_create_cq
  RDMA/core: Fix race when resolving IP address
  RDMA/core: Make rdma_counter.h compile stand alone
  IB/core: Work on the caller socket net namespace in nldev_newlink()
  RDMA/rxe: Fill in wc byte_len with IB_WC_RECV_RDMA_WITH_IMM
  RDMA/mlx5: Set RDMA DIM to be enabled by default
  RDMA/nldev: Added configuration of RDMA dynamic interrupt moderation to netlink
  RDMA/core: Provide RDMA DIM support for ULPs
  linux/dim: Implement RDMA adaptive moderation (DIM)
  IB/mlx5: Report correctly tag matching rendezvous capability
  docs: infiniband: add it to the driver-api bookset
  IB/mlx5: Implement VHCA tunnel mechanism in DEVX
  ...

115 files changed, 4131 insertions, 21746 deletions

diff --git a/drivers/infiniband/hw/Makefile b/drivers/infiniband/hw/Makefile
index 77094be1b262..433fca59febd 100644
--- a/drivers/infiniband/hw/Makefile
+++ b/drivers/infiniband/hw/Makefile
@@ -7,7 +7,6 @@ obj-$(CONFIG_INFINIBAND_EFA)		+= efa/
 obj-$(CONFIG_INFINIBAND_I40IW)		+= i40iw/
 obj-$(CONFIG_MLX4_INFINIBAND)		+= mlx4/
 obj-$(CONFIG_MLX5_INFINIBAND)		+= mlx5/
-obj-$(CONFIG_INFINIBAND_NES)		+= nes/
 obj-$(CONFIG_INFINIBAND_OCRDMA)		+= ocrdma/
 obj-$(CONFIG_INFINIBAND_VMWARE_PVRDMA)	+= vmw_pvrdma/
 obj-$(CONFIG_INFINIBAND_USNIC)		+= usnic/
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index 2c3685faa57a..a91653aabf38 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -805,10 +805,8 @@ int bnxt_re_destroy_qp(struct ib_qp *ib_qp, struct ib_udata *udata)
 		rdev->sqp_ah = NULL;
 	}
 
-	if (!IS_ERR_OR_NULL(qp->rumem))
-		ib_umem_release(qp->rumem);
-	if (!IS_ERR_OR_NULL(qp->sumem))
-		ib_umem_release(qp->sumem);
+	ib_umem_release(qp->rumem);
+	ib_umem_release(qp->sumem);
 
 	mutex_lock(&rdev->qp_lock);
 	list_del(&qp->list);
@@ -1201,12 +1199,8 @@ struct ib_qp *bnxt_re_create_qp(struct ib_pd *ib_pd,
 qp_destroy:
 	bnxt_qplib_destroy_qp(&rdev->qplib_res, &qp->qplib_qp);
 free_umem:
-	if (udata) {
-		if (qp->rumem)
-			ib_umem_release(qp->rumem);
-		if (qp->sumem)
-			ib_umem_release(qp->sumem);
-	}
+	ib_umem_release(qp->rumem);
+	ib_umem_release(qp->sumem);
 fail:
 	kfree(qp);
 	return ERR_PTR(rc);
@@ -1302,8 +1296,7 @@ void bnxt_re_destroy_srq(struct ib_srq *ib_srq, struct ib_udata *udata)
 	if (qplib_srq->cq)
 		nq = qplib_srq->cq->nq;
 	bnxt_qplib_destroy_srq(&rdev->qplib_res, qplib_srq);
-	if (srq->umem)
-		ib_umem_release(srq->umem);
+	ib_umem_release(srq->umem);
 	atomic_dec(&rdev->srq_count);
 	if (nq)
 		nq->budget--;
@@ -1412,8 +1405,7 @@ int bnxt_re_create_srq(struct ib_srq *ib_srq,
 	return 0;
 
 fail:
-	if (srq->umem)
-		ib_umem_release(srq->umem);
+	ib_umem_release(srq->umem);
 exit:
 	return rc;
 }
@@ -2517,9 +2509,8 @@ int bnxt_re_post_recv(struct ib_qp *ib_qp, const struct ib_recv_wr *wr,
 }
 
 /* Completion Queues */
-int bnxt_re_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata)
+void bnxt_re_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata)
 {
-	int rc;
 	struct bnxt_re_cq *cq;
 	struct bnxt_qplib_nq *nq;
 	struct bnxt_re_dev *rdev;
@@ -2528,29 +2519,20 @@ int bnxt_re_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata)
 	rdev = cq->rdev;
 	nq = cq->qplib_cq.nq;
 
-	rc = bnxt_qplib_destroy_cq(&rdev->qplib_res, &cq->qplib_cq);
-	if (rc) {
-		dev_err(rdev_to_dev(rdev), "Failed to destroy HW CQ");
-		return rc;
-	}
-	if (!IS_ERR_OR_NULL(cq->umem))
-		ib_umem_release(cq->umem);
+	bnxt_qplib_destroy_cq(&rdev->qplib_res, &cq->qplib_cq);
+	ib_umem_release(cq->umem);
 
 	atomic_dec(&rdev->cq_count);
 	nq->budget--;
 	kfree(cq->cql);
-	kfree(cq);
-
-	return 0;
 }
 
-struct ib_cq *bnxt_re_create_cq(struct ib_device *ibdev,
-				const struct ib_cq_init_attr *attr,
-				struct ib_udata *udata)
+int bnxt_re_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr,
+		      struct ib_udata *udata)
 {
-	struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibdev, ibdev);
+	struct bnxt_re_dev *rdev = to_bnxt_re_dev(ibcq->device, ibdev);
 	struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr;
-	struct bnxt_re_cq *cq = NULL;
+	struct bnxt_re_cq *cq = container_of(ibcq, struct bnxt_re_cq, ib_cq);
 	int rc, entries;
 	int cqe = attr->cqe;
 	struct bnxt_qplib_nq *nq = NULL;
@@ -2559,11 +2541,8 @@ struct ib_cq *bnxt_re_create_cq(struct ib_device *ibdev,
 	/* Validate CQ fields */
 	if (cqe < 1 || cqe > dev_attr->max_cq_wqes) {
 		dev_err(rdev_to_dev(rdev), "Failed to create CQ -max exceeded");
-		return ERR_PTR(-EINVAL);
+		return -EINVAL;
 	}
-	cq = kzalloc(sizeof(*cq), GFP_KERNEL);