6 files changed, 107 insertions, 44 deletions

diff --git a/drivers/infiniband/hw/mlx5/fs.c b/drivers/infiniband/hw/mlx5/fs.c
index 520034acf73a..162814ae8cb4 100644
--- a/drivers/infiniband/hw/mlx5/fs.c
+++ b/drivers/infiniband/hw/mlx5/fs.c
@@ -943,7 +943,7 @@ int mlx5_ib_fs_add_op_fc(struct mlx5_ib_dev *dev, u32 port_num,
 	}
 
 	dst.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
-	dst.counter_id = mlx5_fc_id(opfc->fc);
+	dst.counter = opfc->fc;
 
 	flow_act.action =
 		MLX5_FLOW_CONTEXT_ACTION_COUNT | MLX5_FLOW_CONTEXT_ACTION_ALLOW;
@@ -1113,8 +1113,8 @@ static struct mlx5_ib_flow_handler *_create_flow_rule(struct mlx5_ib_dev *dev,
 		handler->ibcounters = flow_act.counters;
 		dest_arr[dest_num].type =
 			MLX5_FLOW_DESTINATION_TYPE_COUNTER;
-		dest_arr[dest_num].counter_id =
-			mlx5_fc_id(mcounters->hw_cntrs_hndl);
+		dest_arr[dest_num].counter =
+			mcounters->hw_cntrs_hndl;
 		dest_num++;
 	}
 
@@ -1603,7 +1603,7 @@ static bool raw_fs_is_multicast(struct mlx5_ib_flow_matcher *fs_matcher,
 static struct mlx5_ib_flow_handler *raw_fs_rule_add(
 	struct mlx5_ib_dev *dev, struct mlx5_ib_flow_matcher *fs_matcher,
 	struct mlx5_flow_context *flow_context, struct mlx5_flow_act *flow_act,
-	u32 counter_id, void *cmd_in, int inlen, int dest_id, int dest_type)
+	struct mlx5_fc *counter, void *cmd_in, int inlen, int dest_id, int dest_type)
 {
 	struct mlx5_flow_destination *dst;
 	struct mlx5_ib_flow_prio *ft_prio;
@@ -1652,8 +1652,12 @@ static struct mlx5_ib_flow_handler *raw_fs_rule_add(
 	}
 
 	if (flow_act->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
+		if (WARN_ON(!counter)) {
+			err = -EINVAL;
+			goto unlock;
+		}
 		dst[dst_num].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
-		dst[dst_num].counter_id = counter_id;
+		dst[dst_num].counter = counter;
 		dst_num++;
 	}
 
@@ -1878,7 +1882,8 @@ static int get_dests(struct uverbs_attr_bundle *attrs,
 	return 0;
 }
 
-static bool is_flow_counter(void *obj, u32 offset, u32 *counter_id)
+static bool
+is_flow_counter(void *obj, u32 offset, u32 *counter_id, u32 *fc_bulk_size)
 {
 	struct devx_obj *devx_obj = obj;
 	u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, devx_obj->dinbox, opcode);
@@ -1888,6 +1893,7 @@ static bool is_flow_counter(void *obj, u32 offset, u32 *counter_id)
 		if (offset && offset >= devx_obj->flow_counter_bulk_size)
 			return false;
 
+		*fc_bulk_size = devx_obj->flow_counter_bulk_size;
 		*counter_id = MLX5_GET(dealloc_flow_counter_in,
 				       devx_obj->dinbox,
 				       flow_counter_id);
@@ -1904,13 +1910,13 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
 {
 	struct mlx5_flow_context flow_context = {.flow_tag =
 		MLX5_FS_DEFAULT_FLOW_TAG};
-	u32 *offset_attr, offset = 0, counter_id = 0;
 	int dest_id, dest_type = -1, inlen, len, ret, i;
 	struct mlx5_ib_flow_handler *flow_handler;
 	struct mlx5_ib_flow_matcher *fs_matcher;
 	struct ib_uobject **arr_flow_actions;
 	struct ib_uflow_resources *uflow_res;
 	struct mlx5_flow_act flow_act = {};
+	struct mlx5_fc *counter = NULL;
 	struct ib_qp *qp = NULL;
 	void *devx_obj, *cmd_in;
 	struct ib_uobject *uobj;
@@ -1937,6 +1943,7 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
 	len = uverbs_attr_get_uobjs_arr(attrs,
 		MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX, &arr_flow_actions);
 	if (len) {
+		u32 *offset_attr, fc_bulk_size, offset = 0, counter_id = 0;
 		devx_obj = arr_flow_actions[0]->object;
 
 		if (uverbs_attr_is_valid(attrs,
@@ -1956,8 +1963,11 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
 			offset = *offset_attr;
 		}
 
-		if (!is_flow_counter(devx_obj, offset, &counter_id))
+		if (!is_flow_counter(devx_obj, offset, &counter_id, &fc_bulk_size))
 			return -EINVAL;
+		counter = mlx5_fc_local_create(counter_id, offset, fc_bulk_size);
+		if (IS_ERR(counter))
+			return PTR_ERR(counter);
 
 		flow_act.action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
 	}
@@ -1968,8 +1978,10 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
 				    MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
 
 	uflow_res = flow_resources_alloc(MLX5_IB_CREATE_FLOW_MAX_FLOW_ACTIONS);
-	if (!uflow_res)
-		return -ENOMEM;
+	if (!uflow_res) {
+		ret = -ENOMEM;
+		goto destroy_counter;
+	}
 
 	len = uverbs_attr_get_uobjs_arr(attrs,
 		MLX5_IB_ATTR_CREATE_FLOW_ARR_FLOW_ACTIONS, &arr_flow_actions);
@@ -1996,7 +2008,7 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
 
 	flow_handler =
 		raw_fs_rule_add(dev, fs_matcher, &flow_context, &flow_act,
-				counter_id, cmd_in, inlen, dest_id, dest_type);
+				counter, cmd_in, inlen, dest_id, dest_type);
 	if (IS_ERR(flow_handler)) {
 		ret = PTR_ERR(flow_handler);
 		goto err_out;
@@ -2007,6 +2019,9 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
 	return 0;
 err_out:
 	ib_uverbs_flow_resources_free(uflow_res);
+destroy_counter:
+	if (counter)
+		mlx5_fc_local_destroy(counter);
 	return ret;
 }
 
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index bc7930d0c564..81849eb671a1 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -242,6 +242,10 @@ static int mlx5_netdev_event(struct notifier_block *this,
 	case NETDEV_DOWN: {
 		struct net_device *upper = NULL;
 
+		if (!netif_is_lag_master(ndev) && !netif_is_lag_port(ndev) &&
+		    !mlx5_core_mp_enabled(mdev))
+			return NOTIFY_DONE;
+
 		if (mlx5_lag_is_roce(mdev) || mlx5_lag_is_sriov(mdev)) {
 			struct net_device *lag_ndev;
 
@@ -2839,7 +2843,7 @@ static int mlx5_ib_get_plane_num(struct mlx5_core_dev *mdev, u8 *num_plane)
 	int err;
 
 	*num_plane = 0;
-	if (!MLX5_CAP_GEN(mdev, ib_virt))
+	if (!MLX5_CAP_GEN(mdev, ib_virt) || !MLX5_CAP_GEN_2(mdev, multiplane))
 		return 0;
 
 	err = mlx5_query_hca_vport_context(mdev, 0, 1, 0, &vport_ctx);
@@ -3639,7 +3643,8 @@ static int mlx5_ib_init_multiport_master(struct mlx5_ib_dev *dev)
 		list_for_each_entry(mpi, &mlx5_ib_unaffiliated_port_list,
 				    list) {
 			if (dev->sys_image_guid == mpi->sys_image_guid &&
-			    (mlx5_core_native_port_num(mpi->mdev) - 1) == i) {
+			    (mlx5_core_native_port_num(mpi->mdev) - 1) == i &&
+			    mlx5_core_same_coredev_type(dev->mdev, mpi->mdev)) {
 				bound = mlx5_ib_bind_slave_port(dev, mpi);
 			}
 
@@ -4785,7 +4790,8 @@ static int mlx5r_mp_probe(struct auxiliary_device *adev,
 
 	mutex_lock(&mlx5_ib_multiport_mutex);
 	list_for_each_entry(dev, &mlx5_ib_dev_list, ib_dev_list) {
-		if (dev->sys_image_guid == mpi->sys_image_guid)
+		if (dev->sys_image_guid == mpi->sys_image_guid &&
+		    mlx5_core_same_coredev_type(dev->mdev, mpi->mdev))
 			bound = mlx5_ib_bind_slave_port(dev, mpi);
 
 		if (bound) {
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index a01b592aa716..974a45c92fbb 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -669,6 +669,12 @@ struct mlx5_ib_mkey {
 #define mlx5_update_odp_stats(mr, counter_name, value)		\
 	atomic64_add(value, &((mr)->odp_stats.counter_name))
 
+#define mlx5_update_odp_stats_with_handled(mr, counter_name, value)         \
+	do {                                                                \
+		mlx5_update_odp_stats(mr, counter_name, value);             \
+		atomic64_add(1, &((mr)->odp_stats.counter_name##_handled)); \
+	} while (0)
+
 struct mlx5_ib_mr {
 	struct ib_mr ibmr;
 	struct mlx5_ib_mkey mmkey;
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index 45d9dc9c6c8f..bb02b6adbf2c 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -2021,6 +2021,11 @@ static int mlx5_revoke_mr(struct mlx5_ib_mr *mr)
 {
 	struct mlx5_ib_dev *dev = to_mdev(mr->ibmr.device);
 	struct mlx5_cache_ent *ent = mr->mmkey.cache_ent;
+	bool is_odp = is_odp_mr(mr);
+	int ret = 0;
+
+	if (is_odp)
+		mutex_lock(&to_ib_umem_odp(mr->umem)->umem_mutex);
 
 	if (mr->mmkey.cacheable && !mlx5r_umr_revoke_mr(mr) && !cache_ent_find_and_store(dev, mr)) {
 		ent = mr->mmkey.cache_ent;
@@ -2032,7 +2037,7 @@ static int mlx5_revoke_mr(struct mlx5_ib_mr *mr)
 			ent->tmp_cleanup_scheduled = true;
 		}
 		spin_unlock_irq(&ent->mkeys_queue.lock);
-		return 0;
+		goto out;
 	}
 
 	if (ent) {
@@ -2041,7 +2046,15 @@ static int mlx5_revoke_mr(struct mlx5_ib_mr *mr)
 		mr->mmkey.cache_ent = NULL;
 		spin_unlock_irq(&ent->mkeys_queue.lock);
 	}
-	return destroy_mkey(dev, mr);
+	ret = destroy_mkey(dev, mr);
+out:
+	if (is_odp) {
+		if (!ret)
+			to_ib_umem_odp(mr->umem)->private = NULL;
+		mutex_unlock(&to_ib_umem_odp(mr->umem)->umem_mutex);
+	}
+
+	return ret;
 }
 
 static int __mlx5_ib_dereg_mr(struct ib_mr *ibmr)
diff --git a/drivers/infiniband/hw/mlx5/odp.c b/drivers/infiniband/hw/mlx5/odp.c
index 4b37446758fd..f1e23583e6c0 100644
--- a/drivers/infiniband/hw/mlx5/odp.c
+++ b/drivers/infiniband/hw/mlx5/odp.c
@@ -228,13 +228,27 @@ static void destroy_unused_implicit_child_mr(struct mlx5_ib_mr *mr)
 	unsigned long idx = ib_umem_start(odp) >> MLX5_IMR_MTT_SHIFT;
 	struct mlx5_ib_mr *imr = mr->parent;
 
+	/*
+	 * If userspace is racing freeing the parent implicit ODP MR then we can
+	 * loose the race with parent destruction. In this case
+	 * mlx5_ib_free_odp_mr() will free everything in the implicit_children
+	 * xarray so NOP is fine. This child MR cannot be destroyed here because
+	 * we are under its umem_mutex.
+	 */
 	if (!refcount_inc_not_zero(&imr->mmkey.usecount))
 		return;
 
-	xa_erase(&imr->implicit_children, idx);
+	xa_lock(&imr->implicit_children);
+	if (__xa_cmpxchg(&imr->implicit_children, idx, mr, NULL, GFP_KERNEL) !=
+	    mr) {
+		xa_unlock(&imr->implicit_children);
+		return;
+	}
+
 	if (MLX5_CAP_ODP(mr_to_mdev(mr)->mdev, mem_page_fault))
-		xa_erase(&mr_to_mdev(mr)->odp_mkeys,
-			 mlx5_base_mkey(mr->mmkey.key));
+		__xa_erase(&mr_to_mdev(mr)->odp_mkeys,
+			   mlx5_base_mkey(mr->mmkey.key));
+	xa_unlock(&imr->implicit_children);
 
 	/* Freeing a MR is a sleeping operation, so bounce to a work queue */
 	INIT_WORK(&mr->odp_destroy.work, free_implicit_child_mr_work);
@@ -268,6 +282,8 @@ static bool mlx5_ib_invalidate_range(struct mmu_interval_notifier *mni,
 	if (!umem_odp->npages)
 		goto out;
 	mr = umem_odp->private;
+	if (!mr)
+		goto out;
 
 	start = max_t(u64, ib_umem_start(umem_odp), range->start);
 	end = min_t(u64, ib_umem_end(umem_odp), range->end);
@@ -313,7 +329,7 @@ static bool mlx5_ib_invalidate_range(struct mmu_interval_notifier *mni,
 				     MLX5_IB_UPD_XLT_ZAP |
 				     MLX5_IB_UPD_XLT_ATOMIC);
 
-	mlx5_update_odp_stats(mr, invalidations, invalidations);
+	mlx5_update_odp_stats_with_handled(mr, invalidations, invalidations);
 
 	/*
 	 * We are now sure that the device will not access the
@@ -500,18 +516,18 @@ static struct mlx5_ib_mr *implicit_get_child_mr(struct mlx5_ib_mr *imr,
 		refcount_inc(&ret->mmkey.usecount);
 		goto out_lock;
 	}
-	xa_unlock(&imr->implicit_children);
 
 	if (MLX5_CAP_ODP(dev->mdev, mem_page_fault)) {
-		ret = xa_store(&dev->odp_mkeys, mlx5_base_mkey(mr->mmkey.key),
-			       &mr->mmkey, GFP_KERNEL);
+		ret = __xa_store(&dev->odp_mkeys, mlx5_base_mkey(mr->mmkey.key),
+				 &mr->mmkey, GFP_KERNEL);
 		if (xa_is_err(ret)) {
 			ret = ERR_PTR(xa_err(ret));
-			xa_erase(&imr->implicit_children, idx);
-			goto out_mr;
+			__xa_erase(&imr->implicit_children, idx);
+			goto out_lock;
 		}
 		mr->mmkey.type = MLX5_MKEY_IMPLICIT_CHILD;
 	}
+	xa_unlock(&imr->implicit_children);
 	mlx5_ib_dbg(mr_to_mdev(imr), "key %x mr %p\n", mr->mmkey.key, mr);
 	return mr;
 
@@ -944,8 +960,7 @@ out:
 /*
  * Handle a single data segment in a page-fault WQE or RDMA region.
  *
- * Returns number of OS pages retrieved on success. The caller may continue to
- * the next data segment.
+ * Returns zero on success. The caller may continue to the next data segment.
  * Can return the following error codes:
  * -EAGAIN to designate a temporary error. The caller will abort handling the
  *  page fault and resolve it.
@@ -958,7 +973,7 @@ static int pagefault_single_data_segment(struct mlx5_ib_dev *dev,
 					 u32 *bytes_committed,
 					 u32 *bytes_mapped)
 {
-	int npages = 0, ret, i, outlen, cur_outlen = 0, depth = 0;
+	int ret, i, outlen, cur_outlen = 0, depth = 0, pages_in_range;
 	struct pf_frame *head = NULL, *frame;
 	struct mlx5_ib_mkey *mmkey;
 	struct mlx5_ib_mr *mr;
@@ -993,13 +1008,20 @@ next_mr:
 	case MLX5_MKEY_MR:
 		mr = container_of(mmkey, struct mlx5_ib_mr, mmkey);
 
+		pages_in_range = (ALIGN(io_virt + bcnt, PAGE_SIZE) -
+				  (io_virt & PAGE_MASK)) >>
+				 PAGE_SHIFT;
 		ret = pagefault_mr(mr, io_virt, bcnt, bytes_mapped, 0, false);
 		if (ret < 0)
 			goto end;
 
-		mlx5_update_odp_stats(mr, faults, ret);
+		mlx5_update_odp_stats_with_handled(mr, faults, ret);
+
+		if (ret < pages_in_range) {
+			ret = -EFAULT;
+			goto end;
+		}
 
-		npages += ret;
 		ret = 0;
 		break;
 
@@ -1090,7 +1112,7 @@ end:
 	kfree(out);
 
 	*bytes_committed = 0;
-	return ret ? ret : npages;
+	return ret;
 }
 
 /*
@@ -1109,8 +1131,7 @@ end:
  *                   the committed bytes).
  * @receive_queue: receive WQE end of sg list
  *
- * Returns the number of pages loaded if positive, zero for an empty WQE, or a
- * negative error code.
+ * Returns zero for success or a negative error code.
  */
 static int pagefault_data_segments(struct mlx5_ib_dev *dev,
 				   struct mlx5_pagefault *pfault,
@@ -1118,7 +1139,7 @@ static int pagefault_data_segments(struct mlx5_ib_dev *dev,
 				   void *wqe_end, u32 *bytes_mapped,
 				   u32 *total_wqe_bytes, bool receive_queue)
 {
-	int ret = 0, npages = 0;
+	int ret = 0;
 	u64 io_virt;
 	__be32 key;
 	u32 byte_count;
@@ -1175,10 +1196,9 @@ static int pagefault_data_segments(struct mlx5_ib_dev *dev,
 						    bytes_mapped);
 		if (ret < 0)
 			break;
-		npages += ret;
 	}
 
-	return ret < 0 ? ret : npages;
+	return ret;
 }
 
 /*
@@ -1414,12 +1434,6 @@ resolve_page_fault:
 	free_page((unsigned long)wqe_start);
 }
 
-static int pages_in_range(u64 address, u32 length)
-{
-	return (ALIGN(address + length, PAGE_SIZE) -
-		(address & PAGE_MASK)) >> PAGE_SHIFT;
-}
-
 static void mlx5_ib_mr_rdma_pfault_handler(struct mlx5_ib_dev *dev,
 					   struct mlx5_pagefault *pfault)
 {
@@ -1458,7 +1472,7 @@ static void mlx5_ib_mr_rdma_pfault_handler(struct mlx5_ib_dev *dev,
 	if (ret == -EAGAIN) {
 		/* We're racing with an invalidation, don't prefetch */
 		prefetch_activated = 0;
-	} else if (ret < 0 || pages_in_range(address, length) > ret) {
+	} else if (ret < 0) {
 		mlx5_ib_page_fault_resume(dev, pfault, 1);
 		if (ret != -ENOENT)
 			mlx5_ib_dbg(dev, "PAGE FAULT error %d. QP 0x%llx, type: 0x%x\n",
@@ -1529,7 +1543,7 @@ static void mlx5_ib_mr_memory_pfault_handler(struct mlx5_ib_dev *dev,
 			goto err;
 	}
 
-	mlx5_update_odp_stats(mr, faults, ret);
+	mlx5_update_odp_stats_with_handled(mr, faults, ret);
 	mlx5r_deref_odp_mkey(mmkey);
 
 	if (pfault->memory.flags & MLX5_MEMORY_PAGE_FAULT_FLAGS_LAST)
diff --git a/drivers/infiniband/hw/mlx5/restrack.c b/drivers/infiniband/hw/mlx5/restrack.c
index affcf8fe943c..67841922c7b8 100644
--- a/drivers/infiniband/hw/mlx5/restrack.c
+++ b/drivers/infiniband/hw/mlx5/restrack.c
@@ -96,9 +96,18 @@ static int fill_stat_mr_entry(struct sk_buff *msg, struct ib_mr *ibmr)
 					 atomic64_read(&mr->odp_stats.faults)))
 		goto err_table;
 	if (rdma_nl_stat_hwcounter_entry(
+		    msg, "page_faults_handled",
+		    atomic64_read(&mr->odp_stats.faults_handled)))
+		goto err_table;
+	if (rdma_nl_stat_hwcounter_entry(
 		    msg, "page_invalidations",
 		    atomic64_read(&mr->odp_stats.invalidations)))
 		goto err_table;
+	if (rdma_nl_stat_hwcounter_entry(
+		    msg, "page_invalidations_handled",
+		    atomic64_read(&mr->odp_stats.invalidations_handled)))
+		goto err_table;
+
 	if (rdma_nl_stat_hwcounter_entry(msg, "page_prefetch",
 					 atomic64_read(&mr->odp_stats.prefetch)))
 		goto err_table;