net/mlx5: Refactor mlx5_core_mr to mkey

Mlx5's mkey mechanism is also used for memory windows.
The current code base uses MR (memory region) naming, which is
inaccurate. Changing MR to mkey in order to represent its different
usages more accurately.

Signed-off-by: Matan Barak <matanb@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

4 files changed, 38 insertions, 36 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index aac071a7e830..6ef0bfded2ba 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -515,7 +515,7 @@ struct mlx5e_priv {
 	struct mlx5_uar            cq_uar;
 	u32                        pdn;
 	u32                        tdn;
-	struct mlx5_core_mr        mr;
+	struct mlx5_core_mkey      mkey;
 	struct mlx5e_rq            drop_rq;
 
 	struct mlx5e_channel     **channel;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index d4e1c3045200..43a148939557 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -982,7 +982,7 @@ static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
 	c->cpu      = cpu;
 	c->pdev     = &priv->mdev->pdev->dev;
 	c->netdev   = priv->netdev;
-	c->mkey_be  = cpu_to_be32(priv->mr.key);
+	c->mkey_be  = cpu_to_be32(priv->mkey.key);
 	c->num_tc   = priv->params.num_tc;
 
 	mlx5e_build_channeltc_to_txq_map(priv, ix);
@@ -2194,7 +2194,7 @@ static void mlx5e_build_netdev(struct net_device *netdev)
 }
 
 static int mlx5e_create_mkey(struct mlx5e_priv *priv, u32 pdn,
-			     struct mlx5_core_mr *mr)
+			     struct mlx5_core_mkey *mkey)
 {
 	struct mlx5_core_dev *mdev = priv->mdev;
 	struct mlx5_create_mkey_mbox_in *in;
@@ -2210,7 +2210,7 @@ static int mlx5e_create_mkey(struct mlx5e_priv *priv, u32 pdn,
 	in->seg.flags_pd = cpu_to_be32(pdn | MLX5_MKEY_LEN64);
 	in->seg.qpn_mkey7_0 = cpu_to_be32(0xffffff << 8);
 
-	err = mlx5_core_create_mkey(mdev, mr, in, sizeof(*in), NULL, NULL,
+	err = mlx5_core_create_mkey(mdev, mkey, in, sizeof(*in), NULL, NULL,
 				    NULL);
 
 	kvfree(in);
@@ -2259,7 +2259,7 @@ static void *mlx5e_create_netdev(struct mlx5_core_dev *mdev)
 		goto err_dealloc_pd;
 	}
 
-	err = mlx5e_create_mkey(priv, priv->pdn, &priv->mr);
+	err = mlx5e_create_mkey(priv, priv->pdn, &priv->mkey);
 	if (err) {
 		mlx5_core_err(mdev, "create mkey failed, %d\n", err);
 		goto err_dealloc_transport_domain;
@@ -2333,7 +2333,7 @@ err_destroy_tises:
 	mlx5e_destroy_tises(priv);
 
 err_destroy_mkey:
-	mlx5_core_destroy_mkey(mdev, &priv->mr);
+	mlx5_core_destroy_mkey(mdev, &priv->mkey);
 
 err_dealloc_transport_domain:
 	mlx5_core_dealloc_transport_domain(mdev, priv->tdn);
@@ -2367,7 +2367,7 @@ static void mlx5e_destroy_netdev(struct mlx5_core_dev *mdev, void *vpriv)
 	mlx5e_destroy_rqt(priv, MLX5E_INDIRECTION_RQT);
 	mlx5e_close_drop_rq(priv);
 	mlx5e_destroy_tises(priv);
-	mlx5_core_destroy_mkey(priv->mdev, &priv->mr);
+	mlx5_core_destroy_mkey(priv->mdev, &priv->mkey);
 	mlx5_core_dealloc_transport_domain(priv->mdev, priv->tdn);
 	mlx5_core_dealloc_pd(priv->mdev, priv->pdn);
 	mlx5_unmap_free_uar(priv->mdev, &priv->cq_uar);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 1545a944c309..0916bbc69269 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -1117,7 +1117,7 @@ static int mlx5_load_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv)
 	mlx5_init_cq_table(dev);
 	mlx5_init_qp_table(dev);
 	mlx5_init_srq_table(dev);
-	mlx5_init_mr_table(dev);
+	mlx5_init_mkey_table(dev);
 
 	err = mlx5_init_fs(dev);
 	if (err) {
@@ -1164,7 +1164,7 @@ err_sriov:
 err_reg_dev:
 	mlx5_cleanup_fs(dev);
 err_fs:
-	mlx5_cleanup_mr_table(dev);
+	mlx5_cleanup_mkey_table(dev);
 	mlx5_cleanup_srq_table(dev);
 	mlx5_cleanup_qp_table(dev);
 	mlx5_cleanup_cq_table(dev);
@@ -1237,7 +1237,7 @@ static int mlx5_unload_one(struct mlx5_core_dev *dev, struct mlx5_priv *priv)
 #endif
 
 	mlx5_cleanup_fs(dev);
-	mlx5_cleanup_mr_table(dev);
+	mlx5_cleanup_mkey_table(dev);
 	mlx5_cleanup_srq_table(dev);
 	mlx5_cleanup_qp_table(dev);
 	mlx5_cleanup_cq_table(dev);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mr.c b/drivers/net/ethernet/mellanox/mlx5/core/mr.c
index 6fa22b51e460..77a7293921d5 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/mr.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mr.c
@@ -36,25 +36,26 @@
 #include <linux/mlx5/cmd.h>
 #include "mlx5_core.h"
 
-void mlx5_init_mr_table(struct mlx5_core_dev *dev)
+void mlx5_init_mkey_table(struct mlx5_core_dev *dev)
 {
-	struct mlx5_mr_table *table = &dev->priv.mr_table;
+	struct mlx5_mkey_table *table = &dev->priv.mkey_table;
 
 	memset(table, 0, sizeof(*table));
 	rwlock_init(&table->lock);
 	INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
 }
 
-void mlx5_cleanup_mr_table(struct mlx5_core_dev *dev)
+void mlx5_cleanup_mkey_table(struct mlx5_core_dev *dev)
 {
 }
 
-int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+int mlx5_core_create_mkey(struct mlx5_core_dev *dev,
+			  struct mlx5_core_mkey *mkey,
 			  struct mlx5_create_mkey_mbox_in *in, int inlen,
 			  mlx5_cmd_cbk_t callback, void *context,
 			  struct mlx5_create_mkey_mbox_out *out)
 {
-	struct mlx5_mr_table *table = &dev->priv.mr_table;
+	struct mlx5_mkey_table *table = &dev->priv.mkey_table;
 	struct mlx5_create_mkey_mbox_out lout;
 	int err;
 	u8 key;
@@ -83,34 +84,35 @@ int mlx5_core_create_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
 		return mlx5_cmd_status_to_err(&lout.hdr);
 	}
 
-	mr->iova = be64_to_cpu(in->seg.start_addr);
-	mr->size = be64_to_cpu(in->seg.len);
-	mr->key = mlx5_idx_to_mkey(be32_to_cpu(lout.mkey) & 0xffffff) | key;
-	mr->pd = be32_to_cpu(in->seg.flags_pd) & 0xffffff;
+	mkey->iova = be64_to_cpu(in->seg.start_addr);
+	mkey->size = be64_to_cpu(in->seg.len);
+	mkey->key = mlx5_idx_to_mkey(be32_to_cpu(lout.mkey) & 0xffffff) | key;
+	mkey->pd = be32_to_cpu(in->seg.flags_pd) & 0xffffff;
 
 	mlx5_core_dbg(dev, "out 0x%x, key 0x%x, mkey 0x%x\n",
-		      be32_to_cpu(lout.mkey), key, mr->key);
+		      be32_to_cpu(lout.mkey), key, mkey->key);
 
-	/* connect to MR tree */
+	/* connect to mkey tree */
 	write_lock_irq(&table->lock);
-	err = radix_tree_insert(&table->tree, mlx5_base_mkey(mr->key), mr);
+	err = radix_tree_insert(&table->tree, mlx5_base_mkey(mkey->key), mkey);
 	write_unlock_irq(&table->lock);
 	if (err) {
-		mlx5_core_warn(dev, "failed radix tree insert of mr 0x%x, %d\n",
-			       mlx5_base_mkey(mr->key), err);
-		mlx5_core_destroy_mkey(dev, mr);
+		mlx5_core_warn(dev, "failed radix tree insert of mkey 0x%x, %d\n",
+			       mlx5_base_mkey(mkey->key), err);
+		mlx5_core_destroy_mkey(dev, mkey);
 	}
 
 	return err;
 }
 EXPORT_SYMBOL(mlx5_core_create_mkey);
 
-int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
+int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev,
+			   struct mlx5_core_mkey *mkey)
 {
-	struct mlx5_mr_table *table = &dev->priv.mr_table;
+	struct mlx5_mkey_table *table = &dev->priv.mkey_table;
 	struct mlx5_destroy_mkey_mbox_in in;
 	struct mlx5_destroy_mkey_mbox_out out;
-	struct mlx5_core_mr *deleted_mr;
+	struct mlx5_core_mkey *deleted_mkey;
 	unsigned long flags;
 	int err;
 
@@ -118,16 +120,16 @@ int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
 	memset(&out, 0, sizeof(out));
 
 	write_lock_irqsave(&table->lock, flags);
-	deleted_mr = radix_tree_delete(&table->tree, mlx5_base_mkey(mr->key));
+	deleted_mkey = radix_tree_delete(&table->tree, mlx5_base_mkey(mkey->key));
 	write_unlock_irqrestore(&table->lock, flags);
-	if (!deleted_mr) {
-		mlx5_core_warn(dev, "failed radix tree delete of mr 0x%x\n",
-			       mlx5_base_mkey(mr->key));
+	if (!deleted_mkey) {
+		mlx5_core_warn(dev, "failed radix tree delete of mkey 0x%x\n",
+			       mlx5_base_mkey(mkey->key));
 		return -ENOENT;
 	}
 
 	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_DESTROY_MKEY);
-	in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
+	in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mkey->key));
 	err = mlx5_cmd_exec(dev, &in, sizeof(in), &out, sizeof(out));
 	if (err)
 		return err;
@@ -139,7 +141,7 @@ int mlx5_core_destroy_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr)
 }
 EXPORT_SYMBOL(mlx5_core_destroy_mkey);
 
-int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *mkey,
 			 struct mlx5_query_mkey_mbox_out *out, int outlen)
 {
 	struct mlx5_query_mkey_mbox_in in;
@@ -149,7 +151,7 @@ int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
 	memset(out, 0, outlen);
 
 	in.hdr.opcode = cpu_to_be16(MLX5_CMD_OP_QUERY_MKEY);
-	in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mr->key));
+	in.mkey = cpu_to_be32(mlx5_mkey_to_idx(mkey->key));
 	err = mlx5_cmd_exec(dev, &in, sizeof(in), out, outlen);
 	if (err)
 		return err;
@@ -161,7 +163,7 @@ int mlx5_core_query_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
 }
 EXPORT_SYMBOL(mlx5_core_query_mkey);
 
-int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mr *mr,
+int mlx5_core_dump_fill_mkey(struct mlx5_core_dev *dev, struct mlx5_core_mkey *_mkey,
 			     u32 *mkey)
 {
 	struct mlx5_query_special_ctxs_mbox_in in;