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

Pull rdma updates from Doug Ledford:
 "Initial roundup of 4.5 merge window patches

   - Remove usage of ib_query_device and instead store attributes in
     ib_device struct

   - Move iopoll out of block and into lib, rename to irqpoll, and use
     in several places in the rdma stack as our new completion queue
     polling library mechanism.  Update the other block drivers that
     already used iopoll to use the new mechanism too.

   - Replace the per-entry GID table locks with a single GID table lock

   - IPoIB multicast cleanup

   - Cleanups to the IB MR facility

   - Add support for 64bit extended IB counters

   - Fix for netlink oops while parsing RDMA nl messages

   - RoCEv2 support for the core IB code

   - mlx4 RoCEv2 support

   - mlx5 RoCEv2 support

   - Cross Channel support for mlx5

   - Timestamp support for mlx5

   - Atomic support for mlx5

   - Raw QP support for mlx5

   - MAINTAINERS update for mlx4/mlx5

   - Misc ocrdma, qib, nes, usNIC, cxgb3, cxgb4, mlx4, mlx5 updates

   - Add support for remote invalidate to the iSER driver (pushed
     through the RDMA tree due to dependencies, acknowledged by nab)

   - Update to NFSoRDMA (pushed through the RDMA tree due to
     dependencies, acknowledged by Bruce)"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (169 commits)
  IB/mlx5: Unify CQ create flags check
  IB/mlx5: Expose Raw Packet QP to user space consumers
  {IB, net}/mlx5: Move the modify QP operation table to mlx5_ib
  IB/mlx5: Support setting Ethernet priority for Raw Packet QPs
  IB/mlx5: Add Raw Packet QP query functionality
  IB/mlx5: Add create and destroy functionality for Raw Packet QP
  IB/mlx5: Refactor mlx5_ib_qp to accommodate other QP types
  IB/mlx5: Allocate a Transport Domain for each ucontext
  net/mlx5_core: Warn on unsupported events of QP/RQ/SQ
  net/mlx5_core: Add RQ and SQ event handling
  net/mlx5_core: Export transport objects
  IB/mlx5: Expose CQE version to user-space
  IB/mlx5: Add CQE version 1 support to user QPs and SRQs
  IB/mlx5: Fix data validation in mlx5_ib_alloc_ucontext
  IB/sa: Fix netlink local service GFP crash
  IB/srpt: Remove redundant wc array
  IB/qib: Improve ipoib UD performance
  IB/mlx4: Advertise RoCE v2 support
  IB/mlx4: Create and use another QP1 for RoCEv2
  IB/mlx4: Enable send of RoCE QP1 packets with IP/UDP headers
  ...

1 files changed, 26 insertions, 120 deletions

diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index c34725c..2734820 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -458,9 +458,6 @@ static int iwch_dereg_mr(struct ib_mr *ib_mr)
 	u32 mmid;
 
 	PDBG("%s ib_mr %p\n", __func__, ib_mr);
-	/* There can be no memory windows */
-	if (atomic_read(&ib_mr->usecnt))
-		return -EINVAL;
 
 	mhp = to_iwch_mr(ib_mr);
 	kfree(mhp->pages);
@@ -479,24 +476,25 @@ static int iwch_dereg_mr(struct ib_mr *ib_mr)
 	return 0;
 }
 
-static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
-					struct ib_phys_buf *buffer_list,
-					int num_phys_buf,
-					int acc,
-					u64 *iova_start)
+static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
 {
-	__be64 *page_list;
-	int shift;
-	u64 total_size;
-	int npages;
-	struct iwch_dev *rhp;
-	struct iwch_pd *php;
+	const u64 total_size = 0xffffffff;
+	const u64 mask = (total_size + PAGE_SIZE - 1) & PAGE_MASK;
+	struct iwch_pd *php = to_iwch_pd(pd);
+	struct iwch_dev *rhp = php->rhp;
 	struct iwch_mr *mhp;
-	int ret;
+	__be64 *page_list;
+	int shift = 26, npages, ret, i;
 
 	PDBG("%s ib_pd %p\n", __func__, pd);
-	php = to_iwch_pd(pd);
-	rhp = php->rhp;
+
+	/*
+	 * T3 only supports 32 bits of size.
+	 */
+	if (sizeof(phys_addr_t) > 4) {
+		pr_warn_once(MOD "Cannot support dma_mrs on this platform.\n");
+		return ERR_PTR(-ENOTSUPP);
+	}
 
 	mhp = kzalloc(sizeof(*mhp), GFP_KERNEL);
 	if (!mhp)
@@ -504,22 +502,23 @@ static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
 
 	mhp->rhp = rhp;
 
-	/* First check that we have enough alignment */
-	if ((*iova_start & ~PAGE_MASK) != (buffer_list[0].addr & ~PAGE_MASK)) {
+	npages = (total_size + (1ULL << shift) - 1) >> shift;
+	if (!npages) {
 		ret = -EINVAL;
 		goto err;
 	}
 
-	if (num_phys_buf > 1 &&
-	    ((buffer_list[0].addr + buffer_list[0].size) & ~PAGE_MASK)) {
-		ret = -EINVAL;
+	page_list = kmalloc_array(npages, sizeof(u64), GFP_KERNEL);
+	if (!page_list) {
+		ret = -ENOMEM;
 		goto err;
 	}
 
-	ret = build_phys_page_list(buffer_list, num_phys_buf, iova_start,
-				   &total_size, &npages, &shift, &page_list);
-	if (ret)
-		goto err;
+	for (i = 0; i < npages; i++)
+		page_list[i] = cpu_to_be64((u64)i << shift);
+
+	PDBG("%s mask 0x%llx shift %d len %lld pbl_size %d\n",
+		__func__, mask, shift, total_size, npages);
 
 	ret = iwch_alloc_pbl(mhp, npages);
 	if (ret) {
@@ -536,7 +535,7 @@ static struct ib_mr *iwch_register_phys_mem(struct ib_pd *pd,
 	mhp->attr.zbva = 0;
 
 	mhp->attr.perms = iwch_ib_to_tpt_access(acc);
-	mhp->attr.va_fbo = *iova_start;
+	mhp->attr.va_fbo = 0;
 	mhp->attr.page_size = shift - 12;
 
 	mhp->attr.len = (u32) total_size;
@@ -553,76 +552,8 @@ err_pbl:
 err:
 	kfree(mhp);
 	return ERR_PTR(ret);
-
-}
-
-static int iwch_reregister_phys_mem(struct ib_mr *mr,
-				     int mr_rereg_mask,
-				     struct ib_pd *pd,
-	                             struct ib_phys_buf *buffer_list,
-	                             int num_phys_buf,
-	                             int acc, u64 * iova_start)
-{
-
-	struct iwch_mr mh, *mhp;
-	struct iwch_pd *php;
-	struct iwch_dev *rhp;
-	__be64 *page_list = NULL;
-	int shift = 0;
-	u64 total_size;
-	int npages = 0;
-	int ret;
-
-	PDBG("%s ib_mr %p ib_pd %p\n", __func__, mr, pd);
-
-	/* There can be no memory windows */
-	if (atomic_read(&mr->usecnt))
-		return -EINVAL;
-
-	mhp = to_iwch_mr(mr);
-	rhp = mhp->rhp;
-	php = to_iwch_pd(mr->pd);
-
-	/* make sure we are on the same adapter */
-	if (rhp != php->rhp)
-		return -EINVAL;
-
-	memcpy(&mh, mhp, sizeof *mhp);
-
-	if (mr_rereg_mask & IB_MR_REREG_PD)
-		php = to_iwch_pd(pd);
-	if (mr_rereg_mask & IB_MR_REREG_ACCESS)
-		mh.attr.perms = iwch_ib_to_tpt_access(acc);
-	if (mr_rereg_mask & IB_MR_REREG_TRANS) {
-		ret = build_phys_page_list(buffer_list, num_phys_buf,
-					   iova_start,
-					   &total_size, &npages,
-					   &shift, &page_list);
-		if (ret)
-			return ret;
-	}
-
-	ret = iwch_reregister_mem(rhp, php, &mh, shift, npages);
-	kfree(page_list);
-	if (ret) {
-		return ret;
-	}
-	if (mr_rereg_mask & IB_MR_REREG_PD)
-		mhp->attr.pdid = php->pdid;
-	if (mr_rereg_mask & IB_MR_REREG_ACCESS)
-		mhp->attr.perms = iwch_ib_to_tpt_access(acc);
-	if (mr_rereg_mask & IB_MR_REREG_TRANS) {
-		mhp->attr.zbva = 0;
-		mhp->attr.va_fbo = *iova_start;
-		mhp->attr.page_size = shift - 12;
-		mhp->attr.len = (u32) total_size;
-		mhp->attr.pbl_size = npages;
-	}
-
-	return 0;
 }
 
-
 static struct ib_mr *iwch_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 				      u64 virt, int acc, struct ib_udata *udata)
 {
@@ -726,28 +657,6 @@ err:
 	return ERR_PTR(err);
 }
 
-static struct ib_mr *iwch_get_dma_mr(struct ib_pd *pd, int acc)
-{
-	struct ib_phys_buf bl;
-	u64 kva;
-	struct ib_mr *ibmr;
-
-	PDBG("%s ib_pd %p\n", __func__, pd);
-
-	/*
-	 * T3 only supports 32 bits of size.
-	 */
-	if (sizeof(phys_addr_t) > 4) {
-		pr_warn_once(MOD "Cannot support dma_mrs on this platform.\n");
-		return ERR_PTR(-ENOTSUPP);
-	}
-	bl.size = 0xffffffff;
-	bl.addr = 0;
-	kva = 0;
-	ibmr = iwch_register_phys_mem(pd, &bl, 1, acc, &kva);
-	return ibmr;
-}
-
 static struct ib_mw *iwch_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
 {
 	struct iwch_dev *rhp;
@@ -1452,12 +1361,9 @@ int iwch_register_device(struct iwch_dev *dev)
 	dev->ibdev.resize_cq = iwch_resize_cq;
 	dev->ibdev.poll_cq = iwch_poll_cq;
 	dev->ibdev.get_dma_mr = iwch_get_dma_mr;
-	dev->ibdev.reg_phys_mr = iwch_register_phys_mem;
-	dev->ibdev.rereg_phys_mr = iwch_reregister_phys_mem;
 	dev->ibdev.reg_user_mr = iwch_reg_user_mr;
 	dev->ibdev.dereg_mr = iwch_dereg_mr;
 	dev->ibdev.alloc_mw = iwch_alloc_mw;
-	dev->ibdev.bind_mw = iwch_bind_mw;
 	dev->ibdev.dealloc_mw = iwch_dealloc_mw;
 	dev->ibdev.alloc_mr = iwch_alloc_mr;
 	dev->ibdev.map_mr_sg = iwch_map_mr_sg;