1 files changed, 148 insertions, 96 deletions

diff --git a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
index 3b9ba8fa247a..d50786b0a6ce 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.c
@@ -9,6 +9,7 @@
 #include <linux/rhashtable.h>
 #include <linux/netdevice.h>
 #include <linux/mutex.h>
+#include <net/devlink.h>
 #include <trace/events/mlxsw.h>
 
 #include "reg.h"
@@ -29,67 +30,6 @@ size_t mlxsw_sp_acl_tcam_priv_size(struct mlxsw_sp *mlxsw_sp)
 #define MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_MIN 3000 /* ms */
 #define MLXSW_SP_ACL_TCAM_VREGION_REHASH_CREDITS 100 /* number of entries */
 
-int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
-			   struct mlxsw_sp_acl_tcam *tcam)
-{
-	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
-	u64 max_tcam_regions;
-	u64 max_regions;
-	u64 max_groups;
-	int err;
-
-	mutex_init(&tcam->lock);
-	tcam->vregion_rehash_intrvl =
-			MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_DFLT;
-	INIT_LIST_HEAD(&tcam->vregion_list);
-
-	max_tcam_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core,
-					      ACL_MAX_TCAM_REGIONS);
-	max_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_REGIONS);
-
-	/* Use 1:1 mapping between ACL region and TCAM region */
-	if (max_tcam_regions < max_regions)
-		max_regions = max_tcam_regions;
-
-	tcam->used_regions = bitmap_zalloc(max_regions, GFP_KERNEL);
-	if (!tcam->used_regions)
-		return -ENOMEM;
-	tcam->max_regions = max_regions;
-
-	max_groups = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_GROUPS);
-	tcam->used_groups = bitmap_zalloc(max_groups, GFP_KERNEL);
-	if (!tcam->used_groups) {
-		err = -ENOMEM;
-		goto err_alloc_used_groups;
-	}
-	tcam->max_groups = max_groups;
-	tcam->max_group_size = MLXSW_CORE_RES_GET(mlxsw_sp->core,
-						 ACL_MAX_GROUP_SIZE);
-
-	err = ops->init(mlxsw_sp, tcam->priv, tcam);
-	if (err)
-		goto err_tcam_init;
-
-	return 0;
-
-err_tcam_init:
-	bitmap_free(tcam->used_groups);
-err_alloc_used_groups:
-	bitmap_free(tcam->used_regions);
-	return err;
-}
-
-void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp,
-			    struct mlxsw_sp_acl_tcam *tcam)
-{
-	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
-
-	mutex_destroy(&tcam->lock);
-	ops->fini(mlxsw_sp, tcam->priv);
-	bitmap_free(tcam->used_groups);
-	bitmap_free(tcam->used_regions);
-}
-
 int mlxsw_sp_acl_tcam_priority_get(struct mlxsw_sp *mlxsw_sp,
 				   struct mlxsw_sp_acl_rule_info *rulei,
 				   u32 *priority, bool fillup_priority)
@@ -893,41 +833,6 @@ mlxsw_sp_acl_tcam_vregion_destroy(struct mlxsw_sp *mlxsw_sp,
 	kfree(vregion);
 }
 
-u32 mlxsw_sp_acl_tcam_vregion_rehash_intrvl_get(struct mlxsw_sp *mlxsw_sp,
-						struct mlxsw_sp_acl_tcam *tcam)
-{
-	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
-	u32 vregion_rehash_intrvl;
-
-	if (WARN_ON(!ops->region_rehash_hints_get))
-		return 0;
-	vregion_rehash_intrvl = tcam->vregion_rehash_intrvl;
-	return vregion_rehash_intrvl;
-}
-
-int mlxsw_sp_acl_tcam_vregion_rehash_intrvl_set(struct mlxsw_sp *mlxsw_sp,
-						struct mlxsw_sp_acl_tcam *tcam,
-						u32 val)
-{
-	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
-	struct mlxsw_sp_acl_tcam_vregion *vregion;
-
-	if (val < MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_MIN && val)
-		return -EINVAL;
-	if (WARN_ON(!ops->region_rehash_hints_get))
-		return -EOPNOTSUPP;
-	tcam->vregion_rehash_intrvl = val;
-	mutex_lock(&tcam->lock);
-	list_for_each_entry(vregion, &tcam->vregion_list, tlist) {
-		if (val)
-			mlxsw_core_schedule_dw(&vregion->rehash.dw, 0);
-		else
-			cancel_delayed_work_sync(&vregion->rehash.dw);
-	}
-	mutex_unlock(&tcam->lock);
-	return 0;
-}
-
 static struct mlxsw_sp_acl_tcam_vregion *
 mlxsw_sp_acl_tcam_vregion_get(struct mlxsw_sp *mlxsw_sp,
 			      struct mlxsw_sp_acl_tcam_vgroup *vgroup,
@@ -1542,6 +1447,153 @@ mlxsw_sp_acl_tcam_vregion_rehash(struct mlxsw_sp *mlxsw_sp,
 		mlxsw_sp_acl_tcam_vregion_rehash_end(mlxsw_sp, vregion, ctx);
 }
 
+static int
+mlxsw_sp_acl_tcam_region_rehash_intrvl_get(struct devlink *devlink, u32 id,
+					   struct devlink_param_gset_ctx *ctx)
+{
+	struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
+	struct mlxsw_sp_acl_tcam *tcam;
+	struct mlxsw_sp *mlxsw_sp;
+
+	mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
+	tcam = mlxsw_sp_acl_to_tcam(mlxsw_sp->acl);
+	ctx->val.vu32 = tcam->vregion_rehash_intrvl;
+
+	return 0;
+}
+
+static int
+mlxsw_sp_acl_tcam_region_rehash_intrvl_set(struct devlink *devlink, u32 id,
+					   struct devlink_param_gset_ctx *ctx)
+{
+	struct mlxsw_core *mlxsw_core = devlink_priv(devlink);
+	struct mlxsw_sp_acl_tcam_vregion *vregion;
+	struct mlxsw_sp_acl_tcam *tcam;
+	struct mlxsw_sp *mlxsw_sp;
+	u32 val = ctx->val.vu32;
+
+	if (val < MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_MIN && val)
+		return -EINVAL;
+
+	mlxsw_sp = mlxsw_core_driver_priv(mlxsw_core);
+	tcam = mlxsw_sp_acl_to_tcam(mlxsw_sp->acl);
+	tcam->vregion_rehash_intrvl = val;
+	mutex_lock(&tcam->lock);
+	list_for_each_entry(vregion, &tcam->vregion_list, tlist) {
+		if (val)
+			mlxsw_core_schedule_dw(&vregion->rehash.dw, 0);
+		else
+			cancel_delayed_work_sync(&vregion->rehash.dw);
+	}
+	mutex_unlock(&tcam->lock);
+	return 0;
+}
+
+static const struct devlink_param mlxsw_sp_acl_tcam_rehash_params[] = {
+	DEVLINK_PARAM_DRIVER(MLXSW_DEVLINK_PARAM_ID_ACL_REGION_REHASH_INTERVAL,
+			     "acl_region_rehash_interval",
+			     DEVLINK_PARAM_TYPE_U32,
+			     BIT(DEVLINK_PARAM_CMODE_RUNTIME),
+			     mlxsw_sp_acl_tcam_region_rehash_intrvl_get,
+			     mlxsw_sp_acl_tcam_region_rehash_intrvl_set,
+			     NULL),
+};
+
+static int mlxsw_sp_acl_tcam_rehash_params_register(struct mlxsw_sp *mlxsw_sp)
+{
+	struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
+
+	if (!mlxsw_sp->acl_tcam_ops->region_rehash_hints_get)
+		return 0;
+
+	return devl_params_register(devlink, mlxsw_sp_acl_tcam_rehash_params,
+				    ARRAY_SIZE(mlxsw_sp_acl_tcam_rehash_params));
+}
+
+static void
+mlxsw_sp_acl_tcam_rehash_params_unregister(struct mlxsw_sp *mlxsw_sp)
+{
+	struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
+
+	if (!mlxsw_sp->acl_tcam_ops->region_rehash_hints_get)
+		return;
+
+	devl_params_unregister(devlink, mlxsw_sp_acl_tcam_rehash_params,
+			       ARRAY_SIZE(mlxsw_sp_acl_tcam_rehash_params));
+}
+
+int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
+			   struct mlxsw_sp_acl_tcam *tcam)
+{
+	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
+	u64 max_tcam_regions;
+	u64 max_regions;
+	u64 max_groups;
+	int err;
+
+	mutex_init(&tcam->lock);
+	tcam->vregion_rehash_intrvl =
+			MLXSW_SP_ACL_TCAM_VREGION_REHASH_INTRVL_DFLT;
+	INIT_LIST_HEAD(&tcam->vregion_list);
+
+	err = mlxsw_sp_acl_tcam_rehash_params_register(mlxsw_sp);
+	if (err)
+		goto err_rehash_params_register;
+
+	max_tcam_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core,
+					      ACL_MAX_TCAM_REGIONS);
+	max_regions = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_REGIONS);
+
+	/* Use 1:1 mapping between ACL region and TCAM region */
+	if (max_tcam_regions < max_regions)
+		max_regions = max_tcam_regions;
+
+	tcam->used_regions = bitmap_zalloc(max_regions, GFP_KERNEL);
+	if (!tcam->used_regions) {
+		err = -ENOMEM;
+		goto err_alloc_used_regions;
+	}
+	tcam->max_regions = max_regions;
+
+	max_groups = MLXSW_CORE_RES_GET(mlxsw_sp->core, ACL_MAX_GROUPS);
+	tcam->used_groups = bitmap_zalloc(max_groups, GFP_KERNEL);
+	if (!tcam->used_groups) {
+		err = -ENOMEM;
+		goto err_alloc_used_groups;
+	}
+	tcam->max_groups = max_groups;
+	tcam->max_group_size = MLXSW_CORE_RES_GET(mlxsw_sp->core,
+						  ACL_MAX_GROUP_SIZE);
+
+	err = ops->init(mlxsw_sp, tcam->priv, tcam);
+	if (err)
+		goto err_tcam_init;
+
+	return 0;
+
+err_tcam_init:
+	bitmap_free(tcam->used_groups);
+err_alloc_used_groups:
+	bitmap_free(tcam->used_regions);
+err_alloc_used_regions:
+	mlxsw_sp_acl_tcam_rehash_params_unregister(mlxsw_sp);
+err_rehash_params_register:
+	mutex_destroy(&tcam->lock);
+	return err;
+}
+
+void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp,
+			    struct mlxsw_sp_acl_tcam *tcam)
+{
+	const struct mlxsw_sp_acl_tcam_ops *ops = mlxsw_sp->acl_tcam_ops;
+
+	ops->fini(mlxsw_sp, tcam->priv);
+	bitmap_free(tcam->used_groups);
+	bitmap_free(tcam->used_regions);
+	mlxsw_sp_acl_tcam_rehash_params_unregister(mlxsw_sp);
+	mutex_destroy(&tcam->lock);
+}
+
 static const enum mlxsw_afk_element mlxsw_sp_acl_tcam_pattern_ipv4[] = {
 	MLXSW_AFK_ELEMENT_SRC_SYS_PORT,
 	MLXSW_AFK_ELEMENT_DMAC_32_47,