From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leon Romanovsky Subject: [PATCH mlx5-next 03/10] net/mlx5: Add interface to hold and release core resources Date: Thu, 8 Nov 2018 21:10:10 +0200 Message-ID: <20181108191017.21891-4-leon@kernel.org> References: <20181108191017.21891-1-leon@kernel.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Cc: Leon Romanovsky , RDMA mailing list , Artemy Kovalyov , Majd Dibbiny , Moni Shoua , Saeed Mahameed , linux-netdev To: Doug Ledford , Jason Gunthorpe Return-path: Received: from mail.kernel.org ([198.145.29.99]:50098 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727065AbeKIErZ (ORCPT ); Thu, 8 Nov 2018 23:47:25 -0500 In-Reply-To: <20181108191017.21891-1-leon@kernel.org> Sender: netdev-owner@vger.kernel.org List-ID: From: Moni Shoua Sometimes upper layers may want to prevent the destruction of a core resource for a period of time while work on that resource is in progress. Add API to support this. Signed-off-by: Moni Shoua Signed-off-by: Leon Romanovsky --- drivers/net/ethernet/mellanox/mlx5/core/qp.c | 16 ++++++++++++++++ include/linux/mlx5/qp.h | 5 +++++ 2 files changed, 21 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/qp.c b/drivers/net/ethernet/mellanox/mlx5/core/qp.c index 690dc1dd9391..cba4a435043a 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/qp.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/qp.c @@ -670,3 +670,19 @@ int mlx5_core_query_q_counter(struct mlx5_core_dev *dev, u16 counter_id, return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size); } EXPORT_SYMBOL_GPL(mlx5_core_query_q_counter); + +struct mlx5_core_rsc_common *mlx5_core_res_hold(struct mlx5_core_dev *dev, + int res_num, + enum mlx5_res_type res_type) +{ + u32 rsn = res_num | (res_type << MLX5_USER_INDEX_LEN); + + return mlx5_get_rsc(dev, rsn); +} +EXPORT_SYMBOL_GPL(mlx5_core_res_hold); + +void mlx5_core_res_put(struct mlx5_core_rsc_common *res) +{ + mlx5_core_put_rsc(res); +} +EXPORT_SYMBOL_GPL(mlx5_core_res_put); diff --git a/include/linux/mlx5/qp.h b/include/linux/mlx5/qp.h index fbe322c966bc..b26ea9077384 100644 --- a/include/linux/mlx5/qp.h +++ b/include/linux/mlx5/qp.h @@ -596,6 +596,11 @@ int mlx5_core_dealloc_q_counter(struct mlx5_core_dev *dev, u16 counter_id); int mlx5_core_query_q_counter(struct mlx5_core_dev *dev, u16 counter_id, int reset, void *out, int out_size); +struct mlx5_core_rsc_common *mlx5_core_res_hold(struct mlx5_core_dev *dev, + int res_num, + enum mlx5_res_type res_type); +void mlx5_core_res_put(struct mlx5_core_rsc_common *res); + static inline const char *mlx5_qp_type_str(int type) { switch (type) { -- 2.19.1