Merge tag 'v6.15' into rdma.git for-next

Following patches need the RDMA rc branch since we are past the RC cycle
now.

Merge conflicts resolved based on Linux-next:

- For RXE odp changes keep for-next version and fixup new places that
  need to call is_odp_mr()
  https://lore.kernel.org/r/20250422143019.500201bd@canb.auug.org.au
  https://lore.kernel.org/r/20250514122455.3593b083@canb.auug.org.au

- irdma is keeping the while/kfree bugfix from -rc and the pf/cdev_info
  change from for-next
  https://lore.kernel.org/r/20250513130630.280ee6c5@canb.auug.org.au

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

13 files changed, 30 insertions, 34 deletions

diff --git a/drivers/infiniband/core/cma.c b/drivers/infiniband/core/cma.c
index ccd0d9cf1dda..ce942d300f1e 100644
--- a/drivers/infiniband/core/cma.c
+++ b/drivers/infiniband/core/cma.c
@@ -71,6 +71,8 @@ static const char * const cma_events[] = {
 static void cma_iboe_set_mgid(struct sockaddr *addr, union ib_gid *mgid,
 			      enum ib_gid_type gid_type);
 
+static void cma_netevent_work_handler(struct work_struct *_work);
+
 const char *__attribute_const__ rdma_event_msg(enum rdma_cm_event_type event)
 {
 	size_t index = event;
@@ -1033,6 +1035,7 @@ __rdma_create_id(struct net *net, rdma_cm_event_handler event_handler,
 	get_random_bytes(&id_priv->seq_num, sizeof id_priv->seq_num);
 	id_priv->id.route.addr.dev_addr.net = get_net(net);
 	id_priv->seq_num &= 0x00ffffff;
+	INIT_WORK(&id_priv->id.net_work, cma_netevent_work_handler);
 
 	rdma_restrack_new(&id_priv->res, RDMA_RESTRACK_CM_ID);
 	if (parent)
@@ -5227,7 +5230,6 @@ static int cma_netevent_callback(struct notifier_block *self,
 		if (!memcmp(current_id->id.route.addr.dev_addr.dst_dev_addr,
 			   neigh->ha, ETH_ALEN))
 			continue;
-		INIT_WORK(&current_id->id.net_work, cma_netevent_work_handler);
 		cma_id_get(current_id);
 		queue_work(cma_wq, &current_id->id.net_work);
 	}
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index b4e3e4beb7f4..d4263385850a 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -1352,6 +1352,9 @@ static void ib_device_notify_register(struct ib_device *device)
 
 	down_read(&devices_rwsem);
 
+	/* Mark for userspace that device is ready */
+	kobject_uevent(&device->dev.kobj, KOBJ_ADD);
+
 	ret = rdma_nl_notify_event(device, 0, RDMA_REGISTER_EVENT);
 	if (ret)
 		goto out;
@@ -1468,10 +1471,9 @@ int ib_register_device(struct ib_device *device, const char *name,
 		return ret;
 	}
 	dev_set_uevent_suppress(&device->dev, false);
-	/* Mark for userspace that device is ready */
-	kobject_uevent(&device->dev.kobj, KOBJ_ADD);
 
 	ib_device_notify_register(device);
+
 	ib_device_put(device);
 
 	return 0;
diff --git a/drivers/infiniband/core/ucaps.c b/drivers/infiniband/core/ucaps.c
index 6853c6d078f9..de5cb8bf0a61 100644
--- a/drivers/infiniband/core/ucaps.c
+++ b/drivers/infiniband/core/ucaps.c
@@ -170,7 +170,7 @@ int ib_create_ucap(enum rdma_user_cap type)
 	ucap->dev.class = &ucaps_class;
 	ucap->dev.devt = MKDEV(MAJOR(ucaps_base_dev), type);
 	ucap->dev.release = ucap_dev_release;
-	ret = dev_set_name(&ucap->dev, ucap_names[type]);
+	ret = dev_set_name(&ucap->dev, "%s", ucap_names[type]);
 	if (ret)
 		goto err_device;
 
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
index 9082b3fd2b47..063801384b2b 100644
--- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c
+++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c
@@ -1774,10 +1774,7 @@ int bnxt_re_destroy_srq(struct ib_srq *ib_srq, struct ib_udata *udata)
 					       ib_srq);
 	struct bnxt_re_dev *rdev = srq->rdev;
 	struct bnxt_qplib_srq *qplib_srq = &srq->qplib_srq;
-	struct bnxt_qplib_nq *nq = NULL;
 
-	if (qplib_srq->cq)
-		nq = qplib_srq->cq->nq;
 	if (rdev->chip_ctx->modes.toggle_bits & BNXT_QPLIB_SRQ_TOGGLE_BIT) {
 		free_page((unsigned long)srq->uctx_srq_page);
 		hash_del(&srq->hash_entry);
@@ -1785,8 +1782,6 @@ int bnxt_re_destroy_srq(struct ib_srq *ib_srq, struct ib_udata *udata)
 	bnxt_qplib_destroy_srq(&rdev->qplib_res, qplib_srq);
 	ib_umem_release(srq->umem);
 	atomic_dec(&rdev->stats.res.srq_count);
-	if (nq)
-		nq->budget--;
 	return 0;
 }
 
@@ -1827,7 +1822,6 @@ int bnxt_re_create_srq(struct ib_srq *ib_srq,
 		       struct ib_udata *udata)
 {
 	struct bnxt_qplib_dev_attr *dev_attr;
-	struct bnxt_qplib_nq *nq = NULL;
 	struct bnxt_re_ucontext *uctx;
 	struct bnxt_re_dev *rdev;
 	struct bnxt_re_srq *srq;
@@ -1873,7 +1867,6 @@ int bnxt_re_create_srq(struct ib_srq *ib_srq,
 	srq->qplib_srq.eventq_hw_ring_id = rdev->nqr->nq[0].ring_id;
 	srq->qplib_srq.sg_info.pgsize = PAGE_SIZE;
 	srq->qplib_srq.sg_info.pgshft = PAGE_SHIFT;
-	nq = &rdev->nqr->nq[0];
 
 	if (udata) {
 		rc = bnxt_re_init_user_srq(rdev, pd, srq, udata);
@@ -1908,8 +1901,6 @@ int bnxt_re_create_srq(struct ib_srq *ib_srq,
 			goto fail;
 		}
 	}
-	if (nq)
-		nq->budget++;
 	active_srqs = atomic_inc_return(&rdev->stats.res.srq_count);
 	if (active_srqs > rdev->stats.res.srq_watermark)
 		rdev->stats.res.srq_watermark = active_srqs;
@@ -3079,7 +3070,6 @@ int bnxt_re_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata)
 	ib_umem_release(cq->umem);
 
 	atomic_dec(&rdev->stats.res.cq_count);
-	nq->budget--;
 	kfree(cq->cql);
 	return 0;
 }
diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
index 02f7acb30c5d..e7a497cc125c 100644
--- a/drivers/infiniband/hw/hns/hns_roce_main.c
+++ b/drivers/infiniband/hw/hns/hns_roce_main.c
@@ -762,7 +762,7 @@ static int hns_roce_register_device(struct hns_roce_dev *hr_dev)
 		if (ret)
 			return ret;
 	}
-	dma_set_max_seg_size(dev, UINT_MAX);
+	dma_set_max_seg_size(dev, SZ_2G);
 	ret = ib_register_device(ib_dev, "hns_%d", dev);
 	if (ret) {
 		dev_err(dev, "ib_register_device failed!\n");
diff --git a/drivers/infiniband/hw/irdma/main.c b/drivers/infiniband/hw/irdma/main.c
index abb532bc8ce4..1e840bbd619d 100644
--- a/drivers/infiniband/hw/irdma/main.c
+++ b/drivers/infiniband/hw/irdma/main.c
@@ -221,7 +221,7 @@ static int irdma_init_interrupts(struct irdma_pci_f *rf, struct iidc_rdma_core_d
 			break;
 
 	if (i < IRDMA_MIN_MSIX) {
-		for (; i > 0; i--)
+		while (--i >= 0)
 			ice_free_rdma_qvector(cdev, &rf->msix_entries[i]);
 
 		kfree(rf->msix_entries);
@@ -256,6 +256,8 @@ static void irdma_remove(struct auxiliary_device *aux_dev)
 	irdma_ib_unregister_device(iwdev);
 	irdma_deinit_interrupts(iwdev->rf, cdev_info);
 
+	kfree(iwdev->rf);
+
 	pr_debug("INIT: Gen2 PF[%d] device remove success\n", PCI_FUNC(cdev_info->pdev->devfn));
 }
 
diff --git a/drivers/infiniband/hw/irdma/verbs.c b/drivers/infiniband/hw/irdma/verbs.c
index eeb932e58730..1e8c92826de2 100644
--- a/drivers/infiniband/hw/irdma/verbs.c
+++ b/drivers/infiniband/hw/irdma/verbs.c
@@ -4871,5 +4871,4 @@ void irdma_ib_dealloc_device(struct ib_device *ibdev)
 
 	irdma_rt_deinit_hw(iwdev);
 	irdma_ctrl_deinit_hw(iwdev->rf);
-	kfree(iwdev->rf);
 }
diff --git a/drivers/infiniband/hw/mlx5/fs.c b/drivers/infiniband/hw/mlx5/fs.c
index 1d67f0ce6b59..680627f1de33 100644
--- a/drivers/infiniband/hw/mlx5/fs.c
+++ b/drivers/infiniband/hw/mlx5/fs.c
@@ -3445,7 +3445,6 @@ DECLARE_UVERBS_NAMED_OBJECT(
 	&UVERBS_METHOD(MLX5_IB_METHOD_STEERING_ANCHOR_DESTROY));
 
 const struct uapi_definition mlx5_ib_flow_defs[] = {
-#if IS_ENABLED(CONFIG_INFINIBAND_USER_ACCESS)
 	UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
 		MLX5_IB_OBJECT_FLOW_MATCHER),
 	UAPI_DEF_CHAIN_OBJ_TREE(
@@ -3456,7 +3455,6 @@ const struct uapi_definition mlx5_ib_flow_defs[] = {
 	UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
 		MLX5_IB_OBJECT_STEERING_ANCHOR,
 		UAPI_DEF_IS_OBJ_SUPPORTED(mlx5_ib_shared_ft_allowed)),
-#endif
 	{},
 };
 
diff --git a/drivers/infiniband/hw/usnic/usnic_ib_main.c b/drivers/infiniband/hw/usnic/usnic_ib_main.c
index 4ddcd5860e0f..11eca39b73a9 100644
--- a/drivers/infiniband/hw/usnic/usnic_ib_main.c
+++ b/drivers/infiniband/hw/usnic/usnic_ib_main.c
@@ -397,7 +397,7 @@ static void *usnic_ib_device_add(struct pci_dev *dev)
 	if (!us_ibdev) {
 		usnic_err("Device %s context alloc failed\n",
 				netdev_name(pci_get_drvdata(dev)));
-		return ERR_PTR(-EFAULT);
+		return NULL;
 	}
 
 	us_ibdev->ufdev = usnic_fwd_dev_alloc(dev);
@@ -517,8 +517,8 @@ static struct usnic_ib_dev *usnic_ib_discover_pf(struct usnic_vnic *vnic)
 	}
 
 	us_ibdev = usnic_ib_device_add(parent_pci);
-	if (IS_ERR_OR_NULL(us_ibdev)) {
-		us_ibdev = us_ibdev ? us_ibdev : ERR_PTR(-EFAULT);
+	if (!us_ibdev) {
+		us_ibdev = ERR_PTR(-EFAULT);
 		goto out;
 	}
 
@@ -586,10 +586,10 @@ static int usnic_ib_pci_probe(struct pci_dev *pdev,
 	}
 
 	pf = usnic_ib_discover_pf(vf->vnic);
-	if (IS_ERR_OR_NULL(pf)) {
-		usnic_err("Failed to discover pf of vnic %s with err%ld\n",
-				pci_name(pdev), PTR_ERR(pf));
-		err = pf ? PTR_ERR(pf) : -EFAULT;
+	if (IS_ERR(pf)) {
+		err = PTR_ERR(pf);
+		usnic_err("Failed to discover pf of vnic %s with err%d\n",
+				pci_name(pdev), err);
 		goto out_clean_vnic;
 	}
 
diff --git a/drivers/infiniband/sw/rxe/rxe_cq.c b/drivers/infiniband/sw/rxe/rxe_cq.c
index fec87c9030ab..fffd144d509e 100644
--- a/drivers/infiniband/sw/rxe/rxe_cq.c
+++ b/drivers/infiniband/sw/rxe/rxe_cq.c
@@ -56,11 +56,8 @@ int rxe_cq_from_init(struct rxe_dev *rxe, struct rxe_cq *cq, int cqe,
 
 	err = do_mmap_info(rxe, uresp ? &uresp->mi : NULL, udata,
 			   cq->queue->buf, cq->queue->buf_size, &cq->queue->ip);
-	if (err) {
-		vfree(cq->queue->buf);
-		kfree(cq->queue);
+	if (err)
 		return err;
-	}
 
 	cq->is_user = uresp;
 
diff --git a/drivers/infiniband/sw/rxe/rxe_loc.h b/drivers/infiniband/sw/rxe/rxe_loc.h
index f7dbb9cddd12..876702058c84 100644
--- a/drivers/infiniband/sw/rxe/rxe_loc.h
+++ b/drivers/infiniband/sw/rxe/rxe_loc.h
@@ -140,6 +140,12 @@ static inline int qp_mtu(struct rxe_qp *qp)
 		return IB_MTU_4096;
 }
 
+static inline bool is_odp_mr(struct rxe_mr *mr)
+{
+	return IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING) && mr->umem &&
+	       mr->umem->is_odp;
+}
+
 void free_rd_atomic_resource(struct resp_res *res);
 
 static inline void rxe_advance_resp_resource(struct rxe_qp *qp)
diff --git a/drivers/infiniband/sw/rxe/rxe_mr.c b/drivers/infiniband/sw/rxe/rxe_mr.c
index c4936d63e26a..bcb97b3ea58a 100644
--- a/drivers/infiniband/sw/rxe/rxe_mr.c
+++ b/drivers/infiniband/sw/rxe/rxe_mr.c
@@ -323,7 +323,7 @@ int rxe_mr_copy(struct rxe_mr *mr, u64 iova, void *addr,
 		return err;
 	}
 
-	if (mr->umem->is_odp)
+	if (is_odp_mr(mr))
 		return rxe_odp_mr_copy(mr, iova, addr, length, dir);
 	else
 		return rxe_mr_copy_xarray(mr, iova, addr, length, dir);
@@ -472,7 +472,7 @@ int rxe_flush_pmem_iova(struct rxe_mr *mr, u64 start, unsigned int length)
 	if (mr->ibmr.type == IB_MR_TYPE_DMA)
 		return -EFAULT;
 
-	if (mr->umem->is_odp)
+	if (is_odp_mr(mr))
 		err = rxe_odp_flush_pmem_iova(mr, start, length);
 	else
 		err = rxe_mr_flush_pmem_iova(mr, start, length);
diff --git a/drivers/infiniband/sw/rxe/rxe_resp.c b/drivers/infiniband/sw/rxe/rxe_resp.c
index fd7bac5bce18..711f73e0bbb1 100644
--- a/drivers/infiniband/sw/rxe/rxe_resp.c
+++ b/drivers/infiniband/sw/rxe/rxe_resp.c
@@ -702,7 +702,7 @@ static enum resp_states atomic_reply(struct rxe_qp *qp,
 	if (!res->replay) {
 		u64 iova = qp->resp.va + qp->resp.offset;
 
-		if (mr->umem->is_odp)
+		if (is_odp_mr(mr))
 			err = rxe_odp_atomic_op(mr, iova, pkt->opcode,
 						atmeth_comp(pkt),
 						atmeth_swap_add(pkt),
@@ -755,7 +755,7 @@ static enum resp_states atomic_write_reply(struct rxe_qp *qp,
 		return RESPST_ERR_RKEY_VIOLATION;
 	}
 
-	if (mr->umem->is_odp)
+	if (is_odp_mr(mr))
 		err = rxe_odp_do_atomic_write(mr, iova, value);
 	else
 		err = rxe_mr_do_atomic_write(mr, iova, value);