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Message-ID: <20250107060708.1610882-11-tariqt@nvidia.com>
Date: Tue, 7 Jan 2025 08:07:05 +0200
From: Tariq Toukan <tariqt@...dia.com>
To: "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>, "Andrew
Lunn" <andrew+netdev@...n.ch>
CC: <netdev@...r.kernel.org>, Saeed Mahameed <saeedm@...dia.com>, Gal Pressman
<gal@...dia.com>, Leon Romanovsky <leonro@...dia.com>, Mark Bloch
<mbloch@...dia.com>, Moshe Shemesh <moshe@...dia.com>, Yevgeny Kliteynik
<kliteyn@...dia.com>, Tariq Toukan <tariqt@...dia.com>
Subject: [PATCH net-next 10/13] net/mlx5: fs, add support for dest vport HWS action
From: Moshe Shemesh <moshe@...dia.com>
Add support for HW Steering action of vport destination. Add dest vport
actions cache. Hold action in cache per vport / vport and vhca_id. Add
action to cache on demand and remove on namespace closure to reduce
actions creation and destroy.
Signed-off-by: Moshe Shemesh <moshe@...dia.com>
Reviewed-by: Yevgeny Kliteynik <kliteyn@...dia.com>
Reviewed-by: Mark Bloch <mbloch@...dia.com>
Signed-off-by: Tariq Toukan <tariqt@...dia.com>
---
.../mellanox/mlx5/core/steering/hws/fs_hws.c | 62 +++++++++++++++++++
.../mellanox/mlx5/core/steering/hws/fs_hws.h | 2 +
2 files changed, 64 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/fs_hws.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/fs_hws.c
index e142e350160a..337cc3cc6ff6 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/fs_hws.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/fs_hws.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/* Copyright (c) 2024 NVIDIA Corporation & Affiliates */
+#include <linux/mlx5/vport.h>
#include <mlx5_core.h>
#include <fs_core.h>
#include <fs_cmd.h>
@@ -60,6 +61,8 @@ static int init_hws_actions_pool(struct mlx5_core_dev *dev,
xa_init(&hws_pool->el2tol2tnl_pools);
xa_init(&hws_pool->mh_pools);
xa_init(&hws_pool->table_dests);
+ xa_init(&hws_pool->vport_dests);
+ xa_init(&hws_pool->vport_vhca_dests);
return 0;
cleanup_insert_hdr:
@@ -82,9 +85,16 @@ static int init_hws_actions_pool(struct mlx5_core_dev *dev,
static void cleanup_hws_actions_pool(struct mlx5_fs_hws_context *fs_ctx)
{
struct mlx5_fs_hws_actions_pool *hws_pool = &fs_ctx->hws_pool;
+ struct mlx5hws_action *action;
struct mlx5_fs_pool *pool;
unsigned long i;
+ xa_for_each(&hws_pool->vport_vhca_dests, i, action)
+ mlx5hws_action_destroy(action);
+ xa_destroy(&hws_pool->vport_vhca_dests);
+ xa_for_each(&hws_pool->vport_dests, i, action)
+ mlx5hws_action_destroy(action);
+ xa_destroy(&hws_pool->vport_dests);
xa_destroy(&hws_pool->table_dests);
xa_for_each(&hws_pool->mh_pools, i, pool)
destroy_mh_pool(pool, &hws_pool->mh_pools, i);
@@ -384,6 +394,51 @@ create_dest_action_table_num(struct mlx5_fs_hws_context *fs_ctx,
return mlx5hws_action_create_dest_table_num(ctx, table_num, flags);
}
+static struct mlx5hws_action *
+get_dest_action_vport(struct mlx5_fs_hws_context *fs_ctx,
+ struct mlx5_flow_rule *dst, bool is_dest_type_uplink)
+{
+ u32 flags = MLX5HWS_ACTION_FLAG_HWS_FDB | MLX5HWS_ACTION_FLAG_SHARED;
+ struct mlx5_flow_destination *dest_attr = &dst->dest_attr;
+ struct mlx5hws_context *ctx = fs_ctx->hws_ctx;
+ struct mlx5hws_action *dest;
+ struct xarray *dests_xa;
+ bool vhca_id_valid;
+ unsigned long idx;
+ u16 vport_num;
+ int err;
+
+ vhca_id_valid = is_dest_type_uplink ||
+ (dest_attr->vport.flags & MLX5_FLOW_DEST_VPORT_VHCA_ID);
+ vport_num = is_dest_type_uplink ? MLX5_VPORT_UPLINK : dest_attr->vport.num;
+ if (vhca_id_valid) {
+ dests_xa = &fs_ctx->hws_pool.vport_vhca_dests;
+ idx = dest_attr->vport.vhca_id << 16 | vport_num;
+ } else {
+ dests_xa = &fs_ctx->hws_pool.vport_dests;
+ idx = vport_num;
+ }
+dest_load:
+ dest = xa_load(dests_xa, idx);
+ if (dest)
+ return dest;
+
+ dest = mlx5hws_action_create_dest_vport(ctx, vport_num, vhca_id_valid,
+ dest_attr->vport.vhca_id, flags);
+
+ err = xa_insert(dests_xa, idx, dest, GFP_KERNEL);
+ if (err) {
+ mlx5hws_action_destroy(dest);
+ dest = NULL;
+
+ if (err == -EBUSY)
+ /* xarray entry was already stored by another thread */
+ goto dest_load;
+ }
+
+ return dest;
+}
+
static struct mlx5hws_action *
create_dest_action_range(struct mlx5hws_context *ctx, struct mlx5_flow_rule *dst)
{
@@ -690,6 +745,8 @@ static int fte_get_hws_actions(struct mlx5_flow_root_namespace *ns,
if (fte_action->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
list_for_each_entry(dst, &fte->node.children, node.list) {
struct mlx5_flow_destination *attr = &dst->dest_attr;
+ bool is_dest_type_uplink =
+ attr->type == MLX5_FLOW_DESTINATION_TYPE_UPLINK;
if (num_fs_actions == MLX5_FLOW_CONTEXT_ACTION_MAX ||
num_dest_actions == MLX5_FLOW_CONTEXT_ACTION_MAX) {
@@ -714,6 +771,11 @@ static int fte_get_hws_actions(struct mlx5_flow_root_namespace *ns,
dest_action = create_dest_action_range(ctx, dst);
fs_actions[num_fs_actions++].action = dest_action;
break;
+ case MLX5_FLOW_DESTINATION_TYPE_UPLINK:
+ case MLX5_FLOW_DESTINATION_TYPE_VPORT:
+ dest_action = get_dest_action_vport(fs_ctx, dst,
+ is_dest_type_uplink);
+ break;
default:
err = -EOPNOTSUPP;
goto free_actions;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/fs_hws.h b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/fs_hws.h
index d260b14e3963..abc207274d89 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/fs_hws.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/fs_hws.h
@@ -20,6 +20,8 @@ struct mlx5_fs_hws_actions_pool {
struct xarray el2tol2tnl_pools;
struct xarray mh_pools;
struct xarray table_dests;
+ struct xarray vport_vhca_dests;
+ struct xarray vport_dests;
};
struct mlx5_fs_hws_context {
--
2.45.0
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