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

Pull rdma updates from Jason Gunthorpe:
 "A more active cycle than most of the recent past, with a few large,
  long discussed works this time.

  The RNBD block driver has been posted for nearly two years now, and
  flowing through RDMA due to it also introducing a new ULP.

  The removal of FMR has been a recurring discussion theme for a long
  time.

  And the usual smattering of features and bug fixes.

  Summary:

   - Various small driver bugs fixes in rxe, mlx5, hfi1, and efa

   - Continuing driver cleanups in bnxt_re, hns

   - Big cleanup of mlx5 QP creation flows

   - More consistent use of src port and flow label when LAG is used and
     a mlx5 implementation

   - Additional set of cleanups for IB CM

   - 'RNBD' network block driver and target. This is a network block
     RDMA device specific to ionos's cloud environment. It brings strong
     multipath and resiliency capabilities.

   - Accelerated IPoIB for HFI1

   - QP/WQ/SRQ ioctl migration for uverbs, and support for multiple
     async fds

   - Support for exchanging the new IBTA defiend ECE data during RDMA CM
     exchanges

   - Removal of the very old and insecure FMR interface from all ULPs
     and drivers. FRWR should be preferred for at least a decade now"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (247 commits)
  RDMA/cm: Spurious WARNING triggered in cm_destroy_id()
  RDMA/mlx5: Return ECE DC support
  RDMA/mlx5: Don't rely on FW to set zeros in ECE response
  RDMA/mlx5: Return an error if copy_to_user fails
  IB/hfi1: Use free_netdev() in hfi1_netdev_free()
  RDMA/hns: Uninitialized variable in modify_qp_init_to_rtr()
  RDMA/core: Move and rename trace_cm_id_create()
  IB/hfi1: Fix hfi1_netdev_rx_init() error handling
  RDMA: Remove 'max_map_per_fmr'
  RDMA: Remove 'max_fmr'
  RDMA/core: Remove FMR device ops
  RDMA/rdmavt: Remove FMR memory registration
  RDMA/mthca: Remove FMR support for memory registration
  RDMA/mlx4: Remove FMR support for memory registration
  RDMA/i40iw: Remove FMR leftovers
  RDMA/bnxt_re: Remove FMR leftovers
  RDMA/mlx5: Remove FMR leftovers
  RDMA/core: Remove FMR pool API
  RDMA/rds: Remove FMR support for memory registration
  RDMA/srp: Remove support for FMR memory registration
  ...

13 files changed, 38 insertions, 199 deletions

diff --git a/drivers/infiniband/sw/rdmavt/ah.c b/drivers/infiniband/sw/rdmavt/ah.c
index ee02c6176007..40480add7dd3 100644
--- a/drivers/infiniband/sw/rdmavt/ah.c
+++ b/drivers/infiniband/sw/rdmavt/ah.c
@@ -98,14 +98,14 @@ EXPORT_SYMBOL(rvt_check_ah);
  *
  * Return: 0 on success
  */
-int rvt_create_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr,
-		  u32 create_flags, struct ib_udata *udata)
+int rvt_create_ah(struct ib_ah *ibah, struct rdma_ah_init_attr *init_attr,
+		  struct ib_udata *udata)
 {
 	struct rvt_ah *ah = ibah_to_rvtah(ibah);
 	struct rvt_dev_info *dev = ib_to_rvt(ibah->device);
 	unsigned long flags;
 
-	if (rvt_check_ah(ibah->device, ah_attr))
+	if (rvt_check_ah(ibah->device, init_attr->ah_attr))
 		return -EINVAL;
 
 	spin_lock_irqsave(&dev->n_ahs_lock, flags);
@@ -117,10 +117,11 @@ int rvt_create_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr,
 	dev->n_ahs_allocated++;
 	spin_unlock_irqrestore(&dev->n_ahs_lock, flags);
 
-	rdma_copy_ah_attr(&ah->attr, ah_attr);
+	rdma_copy_ah_attr(&ah->attr, init_attr->ah_attr);
 
 	if (dev->driver_f.notify_new_ah)
-		dev->driver_f.notify_new_ah(ibah->device, ah_attr, ah);
+		dev->driver_f.notify_new_ah(ibah->device,
+					    init_attr->ah_attr, ah);
 
 	return 0;
 }
diff --git a/drivers/infiniband/sw/rdmavt/ah.h b/drivers/infiniband/sw/rdmavt/ah.h
index bbb4d3bdec4e..40b7123fec76 100644
--- a/drivers/infiniband/sw/rdmavt/ah.h
+++ b/drivers/infiniband/sw/rdmavt/ah.h
@@ -50,8 +50,8 @@
 
 #include <rdma/rdma_vt.h>
 
-int rvt_create_ah(struct ib_ah *ah, struct rdma_ah_attr *ah_attr,
-		  u32 create_flags, struct ib_udata *udata);
+int rvt_create_ah(struct ib_ah *ah, struct rdma_ah_init_attr *init_attr,
+		  struct ib_udata *udata);
 void rvt_destroy_ah(struct ib_ah *ibah, u32 destroy_flags);
 int rvt_modify_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr);
 int rvt_query_ah(struct ib_ah *ibah, struct rdma_ah_attr *ah_attr);
diff --git a/drivers/infiniband/sw/rdmavt/mr.c b/drivers/infiniband/sw/rdmavt/mr.c
index 72f6534fbb52..60864e5ca7cb 100644
--- a/drivers/infiniband/sw/rdmavt/mr.c
+++ b/drivers/infiniband/sw/rdmavt/mr.c
@@ -97,7 +97,6 @@ int rvt_driver_mr_init(struct rvt_dev_info *rdi)
 		RCU_INIT_POINTER(rdi->lkey_table.table[i], NULL);
 
 	rdi->dparms.props.max_mr = rdi->lkey_table.max;
-	rdi->dparms.props.max_fmr = rdi->lkey_table.max;
 	return 0;
 }
 
@@ -714,160 +713,6 @@ bail:
 EXPORT_SYMBOL(rvt_invalidate_rkey);
 
 /**
- * rvt_alloc_fmr - allocate a fast memory region
- * @pd: the protection domain for this memory region
- * @mr_access_flags: access flags for this memory region
- * @fmr_attr: fast memory region attributes
- *
- * Return: the memory region on success, otherwise returns an errno.
- */
-struct ib_fmr *rvt_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
-			     struct ib_fmr_attr *fmr_attr)
-{
-	struct rvt_fmr *fmr;
-	int m;
-	struct ib_fmr *ret;
-	int rval = -ENOMEM;
-
-	/* Allocate struct plus pointers to first level page tables. */
-	m = (fmr_attr->max_pages + RVT_SEGSZ - 1) / RVT_SEGSZ;
-	fmr = kzalloc(struct_size(fmr, mr.map, m), GFP_KERNEL);
-	if (!fmr)
-		goto bail;
-
-	rval = rvt_init_mregion(&fmr->mr, pd, fmr_attr->max_pages,
-				PERCPU_REF_INIT_ATOMIC);
-	if (rval)
-		goto bail;
-
-	/*
-	 * ib_alloc_fmr() will initialize fmr->ibfmr except for lkey &
-	 * rkey.
-	 */
-	rval = rvt_alloc_lkey(&fmr->mr, 0);
-	if (rval)
-		goto bail_mregion;
-	fmr->ibfmr.rkey = fmr->mr.lkey;
-	fmr->ibfmr.lkey = fmr->mr.lkey;
-	/*
-	 * Resources are allocated but no valid mapping (RKEY can't be
-	 * used).
-	 */
-	fmr->mr.access_flags = mr_access_flags;
-	fmr->mr.max_segs = fmr_attr->max_pages;
-	fmr->mr.page_shift = fmr_attr->page_shift;
-
-	ret = &fmr->ibfmr;
-done:
-	return ret;
-
-bail_mregion:
-	rvt_deinit_mregion(&fmr->mr);
-bail:
-	kfree(fmr);
-	ret = ERR_PTR(rval);
-	goto done;
-}
-
-/**
- * rvt_map_phys_fmr - set up a fast memory region
- * @ibfmr: the fast memory region to set up
- * @page_list: the list of pages to associate with the fast memory region
- * @list_len: the number of pages to associate with the fast memory region
- * @iova: the virtual address of the start of the fast memory region
- *
- * This may be called from interrupt context.
- *
- * Return: 0 on success
- */
-
-int rvt_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
-		     int list_len, u64 iova)
-{
-	struct rvt_fmr *fmr = to_ifmr(ibfmr);
-	struct rvt_lkey_table *rkt;
-	unsigned long flags;
-	int m, n;
-	unsigned long i;
-	u32 ps;
-	struct rvt_dev_info *rdi = ib_to_rvt(ibfmr->device);
-
-	i = atomic_long_read(&fmr->mr.refcount.count);
-	if (i > 2)
-		return -EBUSY;
-
-	if (list_len > fmr->mr.max_segs)
-		return -EINVAL;
-
-	rkt = &rdi->lkey_table;
-	spin_lock_irqsave(&rkt->lock, flags);
-	fmr->mr.user_base = iova;
-	fmr->mr.iova = iova;
-	ps = 1 << fmr->mr.page_shift;
-	fmr->mr.length = list_len * ps;
-	m = 0;
-	n = 0;
-	for (i = 0; i < list_len; i++) {
-		fmr->mr.map[m]->segs[n].vaddr = (void *)page_list[i];
-		fmr->mr.map[m]->segs[n].length = ps;
-		trace_rvt_mr_fmr_seg(&fmr->mr, m, n, (void *)page_list[i], ps);
-		if (++n == RVT_SEGSZ) {
-			m++;
-			n = 0;
-		}
-	}
-	spin_unlock_irqrestore(&rkt->lock, flags);
-	return 0;
-}
-
-/**
- * rvt_unmap_fmr - unmap fast memory regions
- * @fmr_list: the list of fast memory regions to unmap
- *
- * Return: 0 on success.
- */
-int rvt_unmap_fmr(struct list_head *fmr_list)
-{
-	struct rvt_fmr *fmr;
-	struct rvt_lkey_table *rkt;
-	unsigned long flags;
-	struct rvt_dev_info *rdi;
-
-	list_for_each_entry(fmr, fmr_list, ibfmr.list) {
-		rdi = ib_to_rvt(fmr->ibfmr.device);
-		rkt = &rdi->lkey_table;
-		spin_lock_irqsave(&rkt->lock, flags);
-		fmr->mr.user_base = 0;
-		fmr->mr.iova = 0;
-		fmr->mr.length = 0;
-		spin_unlock_irqrestore(&rkt->lock, flags);
-	}
-	return 0;
-}
-
-/**
- * rvt_dealloc_fmr - deallocate a fast memory region
- * @ibfmr: the fast memory region to deallocate
- *
- * Return: 0 on success.
- */
-int rvt_dealloc_fmr(struct ib_fmr *ibfmr)
-{
-	struct rvt_fmr *fmr = to_ifmr(ibfmr);
-	int ret = 0;
-
-	rvt_free_lkey(&fmr->mr);
-	rvt_put_mr(&fmr->mr); /* will set completion if last */
-	ret = rvt_check_refs(&fmr->mr, __func__);
-	if (ret)
-		goto out;
-	rvt_deinit_mregion(&fmr->mr);
-	kfree(fmr);
-out:
-	return ret;
-}
-
-/**
  * rvt_sge_adjacent - is isge compressible
  * @last_sge: last outgoing SGE written
  * @sge: SGE to check
diff --git a/drivers/infiniband/sw/rdmavt/mr.h b/drivers/infiniband/sw/rdmavt/mr.h
index 2c8d0752e8e3..780fc63af98b 100644
--- a/drivers/infiniband/sw/rdmavt/mr.h
+++ b/drivers/infiniband/sw/rdmavt/mr.h
@@ -49,10 +49,6 @@
  */
 
 #include <rdma/rdma_vt.h>
-struct rvt_fmr {
-	struct ib_fmr ibfmr;
-	struct rvt_mregion mr;        /* must be last */
-};
 
 struct rvt_mr {
 	struct ib_mr ibmr;
@@ -60,11 +56,6 @@ struct rvt_mr {
 	struct rvt_mregion mr;  /* must be last */
 };
 
-static inline struct rvt_fmr *to_ifmr(struct ib_fmr *ibfmr)
-{
-	return container_of(ibfmr, struct rvt_fmr, ibfmr);
-}
-
 static inline struct rvt_mr *to_imr(struct ib_mr *ibmr)
 {
 	return container_of(ibmr, struct rvt_mr, ibmr);
@@ -83,11 +74,5 @@ struct ib_mr *rvt_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
 			   u32 max_num_sg, struct ib_udata *udata);
 int rvt_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
 		  int sg_nents, unsigned int *sg_offset);
-struct ib_fmr *rvt_alloc_fmr(struct ib_pd *pd, int mr_access_flags,
-			     struct ib_fmr_attr *fmr_attr);
-int rvt_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
-		     int list_len, u64 iova);
-int rvt_unmap_fmr(struct list_head *fmr_list);
-int rvt_dealloc_fmr(struct ib_fmr *ibfmr);
 
 #endif          /* DEF_RVTMR_H */
diff --git a/drivers/infiniband/sw/rdmavt/qp.c b/drivers/infiniband/sw/rdmavt/qp.c
index 500a7ee04c44..511b72809e14 100644
--- a/drivers/infiniband/sw/rdmavt/qp.c
+++ b/drivers/infiniband/sw/rdmavt/qp.c
@@ -1,5 +1,5 @@
 /*
- * Copyright(c) 2016 - 2019 Intel Corporation.
+ * Copyright(c) 2016 - 2020 Intel Corporation.
  *
  * This file is provided under a dual BSD/GPLv2 license.  When using or
  * redistributing this file, you may do so under either license.
@@ -525,15 +525,18 @@ static inline unsigned mk_qpn(struct rvt_qpn_table *qpt,
  * @rdi: rvt device info structure
  * @qpt: queue pair number table pointer
  * @port_num: IB port number, 1 based, comes from core
+ * @exclude_prefix: prefix of special queue pair number being allocated
  *
  * Return: The queue pair number
  */
 static int alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
-		     enum ib_qp_type type, u8 port_num)
+		     enum ib_qp_type type, u8 port_num, u8 exclude_prefix)
 {
 	u32 i, offset, max_scan, qpn;
 	struct rvt_qpn_map *map;
 	u32 ret;
+	u32 max_qpn = exclude_prefix == RVT_AIP_QP_PREFIX ?
+		RVT_AIP_QPN_MAX : RVT_QPN_MAX;
 
 	if (rdi->driver_f.alloc_qpn)
 		return rdi->driver_f.alloc_qpn(rdi, qpt, type, port_num);
@@ -553,7 +556,7 @@ static int alloc_qpn(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,
 	}
 
 	qpn = qpt->last + qpt->incr;
-	if (qpn >= RVT_QPN_MAX)
+	if (qpn >= max_qpn)
 		qpn = qpt->incr | ((qpt->last & 1) ^ 1);
 	/* offset carries bit 0 */
 	offset = qpn & RVT_BITS_PER_PAGE_MASK;
@@ -987,6 +990,9 @@ static void rvt_free_qpn(struct rvt_qpn_table *qpt, u32 qpn)
 {
 	struct rvt_qpn_map *map;
 
+	if ((qpn & RVT_AIP_QP_PREFIX_MASK) == RVT_AIP_QP_BASE)
+		qpn &= RVT_AIP_QP_SUFFIX;
+
 	map = qpt->map + (qpn & RVT_QPN_MASK) / RVT_BITS_PER_PAGE;
 	if (map->page)
 		clear_bit(qpn & RVT_BITS_PER_PAGE_MASK, map->page);
@@ -1074,13 +1080,15 @@ struct ib_qp *rvt_create_qp(struct ib_pd *ibpd,
 	struct rvt_dev_info *rdi = ib_to_rvt(ibpd->device);
 	void *priv = NULL;
 	size_t sqsize;
+	u8 exclude_prefix = 0;
 
 	if (!rdi)
 		return ERR_PTR(-EINVAL);
 
 	if (init_attr->cap.max_send_sge > rdi->dparms.props.max_send_sge ||
 	    init_attr->cap.max_send_wr > rdi->dparms.props.max_qp_wr ||
-	    init_attr->create_flags)
+	    (init_attr->create_flags &&
+	     init_attr->create_flags != IB_QP_CREATE_NETDEV_USE))
 		return ERR_PTR(-EINVAL);
 
 	/* Check receive queue parameters if no SRQ is specified. */
@@ -1199,14 +1207,20 @@ struct ib_qp *rvt_create_qp(struct ib_pd *ibpd,
 			goto bail_driver_priv;
 		}
 
+		if (init_attr->create_flags & IB_QP_CREATE_NETDEV_USE)
+			exclude_prefix = RVT_AIP_QP_PREFIX;
+
 		err = alloc_qpn(rdi, &rdi->qp_dev->qpn_table,
 				init_attr->qp_type,
-				init_attr->port_num);
+				init_attr->port_num,
+				exclude_prefix);
 		if (err < 0) {
 			ret = ERR_PTR(err);
 			goto bail_rq_wq;
 		}
 		qp->ibqp.qp_num = err;
+		if (init_attr->create_flags & IB_QP_CREATE_NETDEV_USE)
+			qp->ibqp.qp_num |= RVT_AIP_QP_BASE;
 		qp->port_num = init_attr->port_num;
 		rvt_init_qp(rdi, qp, init_attr->qp_type);
 		if (rdi->driver_f.qp_priv_init) {
diff --git a/drivers/infiniband/sw/rdmavt/vt.c b/drivers/infiniband/sw/rdmavt/vt.c
index 72b031ab7092..f904bb34477a 100644
--- a/drivers/infiniband/sw/rdmavt/vt.c
+++ b/drivers/infiniband/sw/rdmavt/vt.c
@@ -378,7 +378,6 @@ enum {
 static const struct ib_device_ops rvt_dev_ops = {
 	.uverbs_abi_ver = RVT_UVERBS_ABI_VERSION,
 
-	.alloc_fmr = rvt_alloc_fmr,
 	.alloc_mr = rvt_alloc_mr,
 	.alloc_pd = rvt_alloc_pd,
 	.alloc_ucontext = rvt_alloc_ucontext,
@@ -387,7 +386,6 @@ static const struct ib_device_ops rvt_dev_ops = {
 	.create_cq = rvt_create_cq,
 	.create_qp = rvt_create_qp,
 	.create_srq = rvt_create_srq,
-	.dealloc_fmr = rvt_dealloc_fmr,
 	.dealloc_pd = rvt_dealloc_pd,
 	.dealloc_ucontext = rvt_dealloc_ucontext,
 	.dereg_mr = rvt_dereg_mr,
@@ -399,7 +397,6 @@ static const struct ib_device_ops rvt_dev_ops = {
 	.get_dma_mr = rvt_get_dma_mr,
 	.get_port_immutable = rvt_get_port_immutable,
 	.map_mr_sg = rvt_map_mr_sg,
-	.map_phys_fmr = rvt_map_phys_fmr,
 	.mmap = rvt_mmap,
 	.modify_ah = rvt_modify_ah,
 	.modify_device = rvt_modify_device,
@@ -420,7 +417,6 @@ static const struct ib_device_ops rvt_dev_ops = {
 	.reg_user_mr = rvt_reg_user_mr,
 	.req_notify_cq = rvt_req_notify_cq,
 	.resize_cq = rvt_resize_cq,
-	.unmap_fmr = rvt_unmap_fmr,
 
 	INIT_RDMA_OBJ_SIZE(ib_ah, rvt_ah, ibah),
 	INIT_RDMA_OBJ_SIZE(ib_cq, rvt_cq, ibcq),
diff --git a/drivers/infiniband/sw/rxe/rxe.c b/drivers/infiniband/sw/rxe/rxe.c
index 4afdd2e20883..5642eefb4ba1 100644
--- a/drivers/infiniband/sw/rxe/rxe.c
+++ b/drivers/infiniband/sw/rxe/rxe.c
@@ -77,6 +77,7 @@ static void rxe_init_device_param(struct rxe_dev *rxe)
 {
 	rxe->max_inline_data			= RXE_MAX_INLINE_DATA;
 
+	rxe->attr.vendor_id			= RXE_VENDOR_ID;
 	rxe->attr.max_mr_size			= RXE_MAX_MR_SIZE;
 	rxe->attr.page_size_cap			= RXE_PAGE_SIZE_CAP;
 	rxe->attr.max_qp			= RXE_MAX_QP;
diff --git a/drivers/infiniband/sw/rxe/rxe_param.h b/drivers/infiniband/sw/rxe/rxe_param.h
index f59616b02477..99e9d8ba9767 100644
--- a/drivers/infiniband/sw/rxe/rxe_param.h
+++ b/drivers/infiniband/sw/rxe/rxe_param.h
@@ -127,6 +127,9 @@ enum rxe_device_param {
 
 	/* Delay before calling arbiter timer */
 	RXE_NSEC_ARB_TIMER_DELAY	= 200,
+
+	/* IBTA v1.4 A3.3.1 VENDOR INFORMATION section */
+	RXE_VENDOR_ID			= 0XFFFFFF,
 };
 
 /* default/initial rxe port parameters */
diff --git a/drivers/infiniband/sw/rxe/rxe_verbs.c b/drivers/infiniband/sw/rxe/rxe_verbs.c
index 9dd4bd7aea92..b8a22af724e8 100644
--- a/drivers/infiniband/sw/rxe/rxe_verbs.c
+++ b/drivers/infiniband/sw/rxe/rxe_verbs.c
@@ -195,15 +195,16 @@ static void rxe_dealloc_pd(struct ib_pd *ibpd, struct ib_udata *udata)
 	rxe_drop_ref(pd);
 }
 
-static int rxe_create_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr,
-			 u32 flags, struct ib_udata *udata)
+static int rxe_create_ah(struct ib_ah *ibah,
+			 struct rdma_ah_init_attr *init_attr,
+			 struct ib_udata *udata)
 
 {
 	int err;
 	struct rxe_dev *rxe = to_rdev(ibah->device);
 	struct rxe_ah *ah = to_rah(ibah);
 
-	err = rxe_av_chk_attr(rxe, attr);
+	err = rxe_av_chk_attr(rxe, init_attr->ah_attr);
 	if (err)
 		return err;
 
@@ -211,7 +212,7 @@ static int rxe_create_ah(struct ib_ah *ibah, struct rdma_ah_attr *attr,
 	if (err)
 		return err;
 
-	rxe_init_av(attr, &ah->av);
+	rxe_init_av(init_attr->ah_attr, &ah->av);
 	return 0;
 }
 
diff --git a/drivers/infiniband/sw/siw/siw.h b/drivers/infiniband/sw/siw/siw.h
index af5e9f8c0fcd..e9753831ac3f 100644
--- a/drivers/infiniband/sw/siw/siw.h
+++ b/drivers/infiniband/sw/siw/siw.h
@@ -30,7 +30,6 @@
 #define SIW_MAX_MR (SIW_MAX_QP * 10)
 #define SIW_MAX_PD SIW_MAX_QP
 #define SIW_MAX_MW 0 /* to be set if MW's are supported */
-#define SIW_MAX_FMR SIW_MAX_MR
 #define SIW_MAX_SRQ SIW_MAX_QP
 #define SIW_MAX_SRQ_WR (SIW_MAX_QP_WR * 10)
 #define SIW_MAX_CONTEXT SIW_MAX_PD
@@ -59,7 +58,6 @@ struct siw_dev_cap {
 	int max_mr;
 	int max_pd;
 	int max_mw;
-	int max_fmr;
 	int max_srq;
 	int max_srq_wr;
 	int max_srq_sge;
@@ -139,7 +137,7 @@ struct siw_pble {
 struct siw_pbl {
 	unsigned int num_buf;
 	unsigned int max_buf;
-	struct siw_pble pbe[1];
+	struct siw_pble pbe[];
 };
 
 /*
diff --git a/drivers/infiniband/sw/siw/siw_main.c b/drivers/infiniband/sw/siw/siw_main.c
index 5cd40fb9e20c..a0b8cc643c5c 100644
--- a/drivers/infiniband/sw/siw/siw_main.c
+++ b/drivers/infiniband/sw/siw/siw_main.c
@@ -413,7 +413,6 @@ static struct siw_device *siw_device_create(struct net_device *netdev)
 	sdev->attrs.max_mr = SIW_MAX_MR;
 	sdev->attrs.max_pd = SIW_MAX_PD;
 	sdev->attrs.max_mw = SIW_MAX_MW;
-	sdev->attrs.max_fmr = SIW_MAX_FMR;
 	sdev->attrs.max_srq = SIW_MAX_SRQ;
 	sdev->attrs.max_srq_wr = SIW_MAX_SRQ_WR;
 	sdev->attrs.max_srq_sge = SIW_MAX_SGE;
diff --git a/drivers/infiniband/sw/siw/siw_mem.c b/drivers/infiniband/sw/siw/siw_mem.c
index e2061dc0b043..87117781d637 100644
--- a/drivers/infiniband/sw/siw/siw_mem.c
+++ b/drivers/infiniband/sw/siw/siw_mem.c
@@ -349,14 +349,11 @@ dma_addr_t siw_pbl_get_buffer(struct siw_pbl *pbl, u64 off, int *len, int *idx)
 struct siw_pbl *siw_pbl_alloc(u32 num_buf)
 {
 	struct siw_pbl *pbl;
-	int buf_size = sizeof(*pbl);
 
 	if (num_buf == 0)
 		return ERR_PTR(-EINVAL);
 
-	buf_size += ((num_buf - 1) * sizeof(struct siw_pble));
-
-	pbl = kzalloc(buf_size, GFP_KERNEL);
+	pbl = kzalloc(struct_size(pbl, pbe, num_buf), GFP_KERNEL);
 	if (!pbl)
 		return ERR_PTR(-ENOMEM);
 
diff --git a/drivers/infiniband/sw/siw/siw_verbs.c b/drivers/infiniband/sw/siw/siw_verbs.c
index aeb842bc7a1e..987e2ba05dbc 100644
--- a/drivers/infiniband/sw/siw/siw_verbs.c
+++ b/drivers/infiniband/sw/siw/siw_verbs.c
@@ -136,7 +136,6 @@ int siw_query_device(struct ib_device *base_dev, struct ib_device_attr *attr,
 	attr->max_cq = sdev->attrs.max_cq;
 	attr->max_cqe = sdev->attrs.max_cqe;
 	attr->max_fast_reg_page_list_len = SIW_MAX_SGE_PBL;
-	attr->max_fmr = sdev->attrs.max_fmr;
 	attr->max_mr = sdev->attrs.max_mr;
 	attr->max_mw = sdev->attrs.max_mw;
 	attr->max_mr_size = ~0ull;