From 6c5e68254027e7a82cb4580fd1a28cda3d417a97 Mon Sep 17 00:00:00 2001 From: Yevgeny Kliteynik Date: Mon, 12 Aug 2024 02:10:56 +0300 Subject: [PATCH] net/mlx5: HWS, added vport handling Vport is a virtual eswitch port that is associated with its virtual function (VF), physical function (PF) or sub-function (SF). This patch adds handling of vports in HWS. Reviewed-by: Hamdan Agbariya Signed-off-by: Yevgeny Kliteynik Signed-off-by: Saeed Mahameed --- .../mlx5/core/steering/hws/mlx5hws_vport.c | 86 +++++++++++++++++++ .../mlx5/core/steering/hws/mlx5hws_vport.h | 13 +++ 2 files changed, 99 insertions(+) create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_vport.c create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_vport.h diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_vport.c b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_vport.c new file mode 100644 index 000000000000..faf42421c43f --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_vport.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +/* Copyright (c) 2024 NVIDIA Corporation & Affiliates */ + +#include "mlx5hws_internal.h" + +int mlx5hws_vport_init_vports(struct mlx5hws_context *ctx) +{ + int ret; + + if (!ctx->caps->eswitch_manager) + return 0; + + xa_init(&ctx->vports.vport_gvmi_xa); + + /* Set gvmi for eswitch manager and uplink vports only. Rest of the vports + * (vport 0 of other function, VFs and SFs) will be queried dynamically. + */ + + ret = mlx5hws_cmd_query_gvmi(ctx->mdev, false, 0, &ctx->vports.esw_manager_gvmi); + if (ret) + return ret; + + ctx->vports.uplink_gvmi = 0; + return 0; +} + +void mlx5hws_vport_uninit_vports(struct mlx5hws_context *ctx) +{ + if (ctx->caps->eswitch_manager) + xa_destroy(&ctx->vports.vport_gvmi_xa); +} + +static int hws_vport_add_gvmi(struct mlx5hws_context *ctx, u16 vport) +{ + u16 vport_gvmi; + int ret; + + ret = mlx5hws_cmd_query_gvmi(ctx->mdev, true, vport, &vport_gvmi); + if (ret) + return -EINVAL; + + ret = xa_insert(&ctx->vports.vport_gvmi_xa, vport, + xa_mk_value(vport_gvmi), GFP_KERNEL); + if (ret) + mlx5hws_dbg(ctx, "Couldn't insert new vport gvmi into xarray (%d)\n", ret); + + return ret; +} + +static bool hws_vport_is_esw_mgr_vport(struct mlx5hws_context *ctx, u16 vport) +{ + return ctx->caps->is_ecpf ? vport == MLX5_VPORT_ECPF : + vport == MLX5_VPORT_PF; +} + +int mlx5hws_vport_get_gvmi(struct mlx5hws_context *ctx, u16 vport, u16 *vport_gvmi) +{ + void *entry; + int ret; + + if (!ctx->caps->eswitch_manager) + return -EINVAL; + + if (hws_vport_is_esw_mgr_vport(ctx, vport)) { + *vport_gvmi = ctx->vports.esw_manager_gvmi; + return 0; + } + + if (vport == MLX5_VPORT_UPLINK) { + *vport_gvmi = ctx->vports.uplink_gvmi; + return 0; + } + +load_entry: + entry = xa_load(&ctx->vports.vport_gvmi_xa, vport); + + if (!xa_is_value(entry)) { + ret = hws_vport_add_gvmi(ctx, vport); + if (ret && ret != -EBUSY) + return ret; + goto load_entry; + } + + *vport_gvmi = (u16)xa_to_value(entry); + return 0; +} diff --git a/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_vport.h b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_vport.h new file mode 100644 index 000000000000..0912fc166b3a --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/steering/hws/mlx5hws_vport.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ +/* Copyright (c) 2024 NVIDIA Corporation & Affiliates */ + +#ifndef MLX5HWS_VPORT_H_ +#define MLX5HWS_VPORT_H_ + +int mlx5hws_vport_init_vports(struct mlx5hws_context *ctx); + +void mlx5hws_vport_uninit_vports(struct mlx5hws_context *ctx); + +int mlx5hws_vport_get_gvmi(struct mlx5hws_context *ctx, u16 vport, u16 *vport_gvmi); + +#endif /* MLX5HWS_VPORT_H_ */ -- 2.20.1