diff mbox series

[v2,14/19] net/mlx5/hws: Add HWS table object

Message ID 20221006150325.660-15-valex@nvidia.com (mailing list archive)
State Superseded, archived
Delegated to: Raslan Darawsheh
Headers show
Series net/mlx5: Add HW steering low level support | expand

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Alex Vesker Oct. 6, 2022, 3:03 p.m. UTC
HWS table resides under the context object, each context can
have multiple tables with different steering types RX/TX/FDB.
The table is not only a logical object but it is also represented
in the HW, packets can be steered to the table and from there
to other tables.

Signed-off-by: Erez Shitrit <erezsh@nvidia.com>
Signed-off-by: Alex Vesker <valex@nvidia.com>
---
 drivers/net/mlx5/hws/mlx5dr_table.c | 248 ++++++++++++++++++++++++++++
 drivers/net/mlx5/hws/mlx5dr_table.h |  44 +++++
 2 files changed, 292 insertions(+)
 create mode 100644 drivers/net/mlx5/hws/mlx5dr_table.c
 create mode 100644 drivers/net/mlx5/hws/mlx5dr_table.h
diff mbox series

Patch

diff --git a/drivers/net/mlx5/hws/mlx5dr_table.c b/drivers/net/mlx5/hws/mlx5dr_table.c
new file mode 100644
index 0000000000..d3f77e4780
--- /dev/null
+++ b/drivers/net/mlx5/hws/mlx5dr_table.c
@@ -0,0 +1,248 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2022 NVIDIA Corporation & Affiliates
+ */
+
+#include "mlx5dr_internal.h"
+
+static void mlx5dr_table_init_next_ft_attr(struct mlx5dr_table *tbl,
+					   struct mlx5dr_cmd_ft_create_attr *ft_attr)
+{
+	ft_attr->type = tbl->fw_ft_type;
+	if (tbl->type == MLX5DR_TABLE_TYPE_FDB)
+		ft_attr->level = tbl->ctx->caps->fdb_ft.max_level - 1;
+	else
+		ft_attr->level = tbl->ctx->caps->nic_ft.max_level - 1;
+	ft_attr->rtc_valid = true;
+}
+
+/* Call this under ctx->ctrl_lock */
+static int
+mlx5dr_table_up_default_fdb_miss_tbl(struct mlx5dr_table *tbl)
+{
+	struct mlx5dr_cmd_ft_create_attr ft_attr = {0};
+	struct mlx5dr_cmd_forward_tbl *default_miss;
+	struct mlx5dr_context *ctx = tbl->ctx;
+	uint8_t tbl_type = tbl->type;
+	uint32_t vport;
+
+	if (tbl->type != MLX5DR_TABLE_TYPE_FDB)
+		return 0;
+
+	if (ctx->common_res[tbl_type].default_miss) {
+		ctx->common_res[tbl_type].default_miss->refcount++;
+		return 0;
+	}
+
+	ft_attr.type = tbl->fw_ft_type;
+	ft_attr.level = tbl->ctx->caps->fdb_ft.max_level; /* The last level */
+	ft_attr.rtc_valid = false;
+
+	assert(ctx->caps->eswitch_manager);
+	vport = ctx->caps->eswitch_manager_vport_number;
+
+	default_miss = mlx5dr_cmd_miss_ft_create(ctx->ibv_ctx, &ft_attr, vport);
+	if (!default_miss) {
+		DR_LOG(ERR, "Failed to default miss table type: 0x%x", tbl_type);
+		return rte_errno;
+	}
+
+	ctx->common_res[tbl_type].default_miss = default_miss;
+	ctx->common_res[tbl_type].default_miss->refcount++;
+	return 0;
+}
+
+/* Called under pthread_spin_lock(&ctx->ctrl_lock) */
+static void mlx5dr_table_down_default_fdb_miss_tbl(struct mlx5dr_table *tbl)
+{
+	struct mlx5dr_cmd_forward_tbl *default_miss;
+	struct mlx5dr_context *ctx = tbl->ctx;
+	uint8_t tbl_type = tbl->type;
+
+	if (tbl->type != MLX5DR_TABLE_TYPE_FDB)
+		return;
+
+	default_miss = ctx->common_res[tbl_type].default_miss;
+	if (--default_miss->refcount)
+		return;
+
+	mlx5dr_cmd_miss_ft_destroy(default_miss);
+
+	simple_free(default_miss);
+	ctx->common_res[tbl_type].default_miss = NULL;
+}
+
+static int
+mlx5dr_table_connect_to_default_miss_tbl(struct mlx5dr_table *tbl,
+					 struct mlx5dr_devx_obj *ft)
+{
+	struct mlx5dr_cmd_ft_modify_attr ft_attr = {0};
+	int ret;
+
+	assert(tbl->type == MLX5DR_TABLE_TYPE_FDB);
+
+	mlx5dr_cmd_set_attr_connect_miss_tbl(tbl->ctx,
+					     tbl->fw_ft_type,
+					     tbl->type,
+					     &ft_attr);
+
+	/* Connect to next */
+	ret = mlx5dr_cmd_flow_table_modify(ft, &ft_attr);
+	if (ret) {
+		DR_LOG(ERR, "Failed to connect FT to default FDB FT");
+		return errno;
+	}
+
+	return 0;
+}
+
+struct mlx5dr_devx_obj *
+mlx5dr_table_create_default_ft(struct mlx5dr_table *tbl)
+{
+	struct mlx5dr_cmd_ft_create_attr ft_attr = {0};
+	struct mlx5dr_devx_obj *ft_obj;
+	int ret;
+
+	mlx5dr_table_init_next_ft_attr(tbl, &ft_attr);
+
+	ft_obj = mlx5dr_cmd_flow_table_create(tbl->ctx->ibv_ctx, &ft_attr);
+	if (ft_obj && tbl->type == MLX5DR_TABLE_TYPE_FDB) {
+		/* Take/create ref over the default miss */
+		ret = mlx5dr_table_up_default_fdb_miss_tbl(tbl);
+		if (ret) {
+			DR_LOG(ERR, "Failed to get default fdb miss");
+			goto free_ft_obj;
+		}
+		ret = mlx5dr_table_connect_to_default_miss_tbl(tbl, ft_obj);
+		if (ret) {
+			DR_LOG(ERR, "Failed connecting to default miss tbl");
+			goto down_miss_tbl;
+		}
+	}
+
+	return ft_obj;
+
+down_miss_tbl:
+	mlx5dr_table_down_default_fdb_miss_tbl(tbl);
+free_ft_obj:
+	mlx5dr_cmd_destroy_obj(ft_obj);
+	return NULL;
+}
+
+void mlx5dr_table_destroy_default_ft(struct mlx5dr_table *tbl,
+				     struct mlx5dr_devx_obj *ft_obj)
+{
+	mlx5dr_table_down_default_fdb_miss_tbl(tbl);
+	mlx5dr_cmd_destroy_obj(ft_obj);
+}
+
+static int mlx5dr_table_init(struct mlx5dr_table *tbl)
+{
+	struct mlx5dr_context *ctx = tbl->ctx;
+	int ret;
+
+	if (mlx5dr_table_is_root(tbl))
+		return 0;
+
+	if (!(tbl->ctx->flags & MLX5DR_CONTEXT_FLAG_HWS_SUPPORT)) {
+		DR_LOG(ERR, "HWS not supported, cannot create mlx5dr_table");
+		rte_errno = EOPNOTSUPP;
+		return rte_errno;
+	}
+
+	switch (tbl->type) {
+	case MLX5DR_TABLE_TYPE_NIC_RX:
+		tbl->fw_ft_type = FS_FT_NIC_RX;
+		break;
+	case MLX5DR_TABLE_TYPE_NIC_TX:
+		tbl->fw_ft_type = FS_FT_NIC_TX;
+		break;
+	case MLX5DR_TABLE_TYPE_FDB:
+		tbl->fw_ft_type = FS_FT_FDB;
+		break;
+	default:
+		assert(0);
+		break;
+	}
+
+	pthread_spin_lock(&ctx->ctrl_lock);
+	tbl->ft = mlx5dr_table_create_default_ft(tbl);
+	if (!tbl->ft) {
+		DR_LOG(ERR, "Failed to create flow table devx object");
+		pthread_spin_unlock(&ctx->ctrl_lock);
+		return rte_errno;
+	}
+
+	ret = mlx5dr_action_get_default_stc(ctx, tbl->type);
+	if (ret)
+		goto tbl_destroy;
+	pthread_spin_unlock(&ctx->ctrl_lock);
+
+	return 0;
+
+tbl_destroy:
+	mlx5dr_table_destroy_default_ft(tbl, tbl->ft);
+	pthread_spin_unlock(&ctx->ctrl_lock);
+	return rte_errno;
+}
+
+static void mlx5dr_table_uninit(struct mlx5dr_table *tbl)
+{
+	if (mlx5dr_table_is_root(tbl))
+		return;
+	pthread_spin_lock(&tbl->ctx->ctrl_lock);
+	mlx5dr_action_put_default_stc(tbl->ctx, tbl->type);
+	mlx5dr_table_destroy_default_ft(tbl, tbl->ft);
+	pthread_spin_unlock(&tbl->ctx->ctrl_lock);
+}
+
+struct mlx5dr_table *mlx5dr_table_create(struct mlx5dr_context *ctx,
+					 struct mlx5dr_table_attr *attr)
+{
+	struct mlx5dr_table *tbl;
+	int ret;
+
+	if (attr->type > MLX5DR_TABLE_TYPE_FDB) {
+		DR_LOG(ERR, "Invalid table type %d", attr->type);
+		return NULL;
+	}
+
+	tbl = simple_malloc(sizeof(*tbl));
+	if (!tbl) {
+		rte_errno = ENOMEM;
+		return NULL;
+	}
+
+	tbl->ctx = ctx;
+	tbl->type = attr->type;
+	tbl->level = attr->level;
+	LIST_INIT(&tbl->head);
+
+	ret = mlx5dr_table_init(tbl);
+	if (ret) {
+		DR_LOG(ERR, "Failed to initialise table");
+		goto free_tbl;
+	}
+
+	pthread_spin_lock(&ctx->ctrl_lock);
+	LIST_INSERT_HEAD(&ctx->head, tbl, next);
+	pthread_spin_unlock(&ctx->ctrl_lock);
+
+	return tbl;
+
+free_tbl:
+	simple_free(tbl);
+	return NULL;
+}
+
+int mlx5dr_table_destroy(struct mlx5dr_table *tbl)
+{
+	struct mlx5dr_context *ctx = tbl->ctx;
+
+	pthread_spin_lock(&ctx->ctrl_lock);
+	LIST_REMOVE(tbl, next);
+	pthread_spin_unlock(&ctx->ctrl_lock);
+	mlx5dr_table_uninit(tbl);
+	simple_free(tbl);
+
+	return 0;
+}
diff --git a/drivers/net/mlx5/hws/mlx5dr_table.h b/drivers/net/mlx5/hws/mlx5dr_table.h
new file mode 100644
index 0000000000..786dddfaa4
--- /dev/null
+++ b/drivers/net/mlx5/hws/mlx5dr_table.h
@@ -0,0 +1,44 @@ 
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2022 NVIDIA Corporation & Affiliates
+ */
+
+#ifndef MLX5DR_TABLE_H_
+#define MLX5DR_TABLE_H_
+
+#define MLX5DR_ROOT_LEVEL 0
+
+struct mlx5dr_table {
+	struct mlx5dr_context *ctx;
+	struct mlx5dr_devx_obj *ft;
+	enum mlx5dr_table_type type;
+	uint32_t fw_ft_type;
+	uint32_t level;
+	LIST_HEAD(matcher_head, mlx5dr_matcher) head;
+	LIST_ENTRY(mlx5dr_table) next;
+};
+
+static inline
+uint32_t mlx5dr_table_get_res_fw_ft_type(enum mlx5dr_table_type tbl_type,
+					 bool is_mirror)
+{
+	if (tbl_type == MLX5DR_TABLE_TYPE_NIC_RX)
+		return FS_FT_NIC_RX;
+	else if (tbl_type == MLX5DR_TABLE_TYPE_NIC_TX)
+		return FS_FT_NIC_TX;
+	else if (tbl_type == MLX5DR_TABLE_TYPE_FDB)
+		return is_mirror ? FS_FT_FDB_TX : FS_FT_FDB_RX;
+
+	assert(0);
+	return 0;
+}
+
+static inline bool mlx5dr_table_is_root(struct mlx5dr_table *tbl)
+{
+	return (tbl->level == MLX5DR_ROOT_LEVEL);
+}
+
+struct mlx5dr_devx_obj *mlx5dr_table_create_default_ft(struct mlx5dr_table *tbl);
+
+void mlx5dr_table_destroy_default_ft(struct mlx5dr_table *tbl,
+				     struct mlx5dr_devx_obj *ft_obj);
+#endif /* MLX5DR_TABLE_H_ */