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 slightly more active cycle than normal with ongoing
  core changes and quite a lot of collected driver updates.

   - Various driver fixes for bnxt_re, cxgb4, hns, mlx5, pvrdma, rxe

   - A new data transfer mode for HFI1 giving higher performance

   - Significant functional and bug fix update to the mlx5
     On-Demand-Paging MR feature

   - A chip hang reset recovery system for hns

   - Change mm->pinned_vm to an atomic64

   - Update bnxt_re to support a new 57500 chip

   - A sane netlink 'rdma link add' method for creating rxe devices and
     fixing the various unregistration race conditions in rxe's
     unregister flow

   - Allow lookup up objects by an ID over netlink

   - Various reworking of the core to driver interface:
       - drivers should not assume umem SGLs are in PAGE_SIZE chunks
       - ucontext is accessed via udata not other means
       - start to make the core code responsible for object memory
         allocation
       - drivers should convert struct device to struct ib_device via a
         helper
       - drivers have more tools to avoid use after unregister problems"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (280 commits)
  net/mlx5: ODP support for XRC transport is not enabled by default in FW
  IB/hfi1: Close race condition on user context disable and close
  RDMA/umem: Revert broken 'off by one' fix
  RDMA/umem: minor bug fix in error handling path
  RDMA/hns: Use GFP_ATOMIC in hns_roce_v2_modify_qp
  cxgb4: kfree mhp after the debug print
  IB/rdmavt: Fix concurrency panics in QP post_send and modify to error
  IB/rdmavt: Fix loopback send with invalidate ordering
  IB/iser: Fix dma_nents type definition
  IB/mlx5: Set correct write permissions for implicit ODP MR
  bnxt_re: Clean cq for kernel consumers only
  RDMA/uverbs: Don't do double free of allocated PD
  RDMA: Handle ucontext allocations by IB/core
  RDMA/core: Fix a WARN() message
  bnxt_re: fix the regression due to changes in alloc_pbl
  IB/mlx4: Increase the timeout for CM cache
  IB/core: Abort page fault handler silently during owning process exit
  IB/mlx5: Validate correct PD before prefetch MR
  IB/mlx5: Protect against prefetch of invalid MR
  RDMA/uverbs: Store PR pointer before it is overwritten
  ...

1 files changed, 16 insertions, 98 deletions

diff --git a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
index 1d4abef17e38..bd4521b2cc5f 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_verbs.c
@@ -37,6 +37,7 @@
 
 #include <rdma/ib_user_verbs.h>
 #include <rdma/ib_addr.h>
+#include <rdma/uverbs_ioctl.h>
 
 #include "usnic_abi.h"
 #include "usnic_ib.h"
@@ -436,57 +437,33 @@ int usnic_ib_query_gid(struct ib_device *ibdev, u8 port, int index,
 	return 0;
 }
 
-struct net_device *usnic_get_netdev(struct ib_device *device, u8 port_num)
-{
-	struct usnic_ib_dev *us_ibdev = to_usdev(device);
-
-	if (us_ibdev->netdev)
-		dev_hold(us_ibdev->netdev);
-
-	return us_ibdev->netdev;
-}
-
 int usnic_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index,
 				u16 *pkey)
 {
-	if (index > 1)
+	if (index > 0)
 		return -EINVAL;
 
 	*pkey = 0xffff;
 	return 0;
 }
 
-struct ib_pd *usnic_ib_alloc_pd(struct ib_device *ibdev,
-					struct ib_ucontext *context,
-					struct ib_udata *udata)
+int usnic_ib_alloc_pd(struct ib_pd *ibpd, struct ib_ucontext *context,
+		      struct ib_udata *udata)
 {
-	struct usnic_ib_pd *pd;
+	struct usnic_ib_pd *pd = to_upd(ibpd);
 	void *umem_pd;
 
-	usnic_dbg("\n");
-
-	pd = kzalloc(sizeof(*pd), GFP_KERNEL);
-	if (!pd)
-		return ERR_PTR(-ENOMEM);
-
 	umem_pd = pd->umem_pd = usnic_uiom_alloc_pd();
 	if (IS_ERR_OR_NULL(umem_pd)) {
-		kfree(pd);
-		return ERR_PTR(umem_pd ? PTR_ERR(umem_pd) : -ENOMEM);
+		return umem_pd ? PTR_ERR(umem_pd) : -ENOMEM;
 	}
 
-	usnic_info("domain 0x%p allocated for context 0x%p and device %s\n",
-		   pd, context, dev_name(&ibdev->dev));
-	return &pd->ibpd;
+	return 0;
 }
 
-int usnic_ib_dealloc_pd(struct ib_pd *pd)
+void usnic_ib_dealloc_pd(struct ib_pd *pd)
 {
-	usnic_info("freeing domain 0x%p\n", pd);
-
 	usnic_uiom_dealloc_pd((to_upd(pd))->umem_pd);
-	kfree(pd);
-	return 0;
 }
 
 struct ib_qp *usnic_ib_create_qp(struct ib_pd *pd,
@@ -496,7 +473,8 @@ struct ib_qp *usnic_ib_create_qp(struct ib_pd *pd,
 	int err;
 	struct usnic_ib_dev *us_ibdev;
 	struct usnic_ib_qp_grp *qp_grp;
-	struct usnic_ib_ucontext *ucontext;
+	struct usnic_ib_ucontext *ucontext = rdma_udata_to_drv_context(
+		udata, struct usnic_ib_ucontext, ibucontext);
 	int cq_cnt;
 	struct usnic_vnic_res_spec res_spec;
 	struct usnic_ib_create_qp_cmd cmd;
@@ -504,7 +482,6 @@ struct ib_qp *usnic_ib_create_qp(struct ib_pd *pd,
 
 	usnic_dbg("\n");
 
-	ucontext = to_uucontext(pd->uobject->context);
 	us_ibdev = to_usdev(pd->device);
 
 	if (init_attr->create_flags)
@@ -676,37 +653,31 @@ int usnic_ib_dereg_mr(struct ib_mr *ibmr)
 	return 0;
 }
 
-struct ib_ucontext *usnic_ib_alloc_ucontext(struct ib_device *ibdev,
-							struct ib_udata *udata)
+int usnic_ib_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata)
 {
-	struct usnic_ib_ucontext *context;
+	struct ib_device *ibdev = uctx->device;
+	struct usnic_ib_ucontext *context = to_ucontext(uctx);
 	struct usnic_ib_dev *us_ibdev = to_usdev(ibdev);
 	usnic_dbg("\n");
 
-	context = kmalloc(sizeof(*context), GFP_KERNEL);
-	if (!context)
-		return ERR_PTR(-ENOMEM);
-
 	INIT_LIST_HEAD(&context->qp_grp_list);
 	mutex_lock(&us_ibdev->usdev_lock);
 	list_add_tail(&context->link, &us_ibdev->ctx_list);
 	mutex_unlock(&us_ibdev->usdev_lock);
 
-	return &context->ibucontext;
+	return 0;
 }
 
-int usnic_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
+void usnic_ib_dealloc_ucontext(struct ib_ucontext *ibcontext)
 {
 	struct usnic_ib_ucontext *context = to_uucontext(ibcontext);
 	struct usnic_ib_dev *us_ibdev = to_usdev(ibcontext->device);
 	usnic_dbg("\n");
 
 	mutex_lock(&us_ibdev->usdev_lock);
-	BUG_ON(!list_empty(&context->qp_grp_list));
+	WARN_ON_ONCE(!list_empty(&context->qp_grp_list));
 	list_del(&context->link);
 	mutex_unlock(&us_ibdev->usdev_lock);
-	kfree(context);
-	return 0;
 }
 
 int usnic_ib_mmap(struct ib_ucontext *context,
@@ -760,57 +731,4 @@ int usnic_ib_mmap(struct ib_ucontext *context,
 	return -EINVAL;
 }
 
-/* In ib callbacks section -  Start of stub funcs */
-struct ib_ah *usnic_ib_create_ah(struct ib_pd *pd,
-				 struct rdma_ah_attr *ah_attr,
-				 u32 flags,
-				 struct ib_udata *udata)
-
-{
-	usnic_dbg("\n");
-	return ERR_PTR(-EPERM);
-}
-
-int usnic_ib_destroy_ah(struct ib_ah *ah, u32 flags)
-{
-	usnic_dbg("\n");
-	return -EINVAL;
-}
-
-int usnic_ib_post_send(struct ib_qp *ibqp, const struct ib_send_wr *wr,
-		       const struct ib_send_wr **bad_wr)
-{
-	usnic_dbg("\n");
-	return -EINVAL;
-}
-
-int usnic_ib_post_recv(struct ib_qp *ibqp, const struct ib_recv_wr *wr,
-		       const struct ib_recv_wr **bad_wr)
-{
-	usnic_dbg("\n");
-	return -EINVAL;
-}
-
-int usnic_ib_poll_cq(struct ib_cq *ibcq, int num_entries,
-				struct ib_wc *wc)
-{
-	usnic_dbg("\n");
-	return -EINVAL;
-}
-
-int usnic_ib_req_notify_cq(struct ib_cq *cq,
-					enum ib_cq_notify_flags flags)
-{
-	usnic_dbg("\n");
-	return -EINVAL;
-}
-
-struct ib_mr *usnic_ib_get_dma_mr(struct ib_pd *pd, int acc)
-{
-	usnic_dbg("\n");
-	return ERR_PTR(-ENOMEM);
-}
-
-
-/* In ib callbacks section - End of stub funcs */
 /* End of ib callbacks section */