From mboxrd@z Thu Jan 1 00:00:00 1970 From: Amir Vadai Subject: [PATCH net-next V3 08/11] net/mlx5_core: Set/Query port MTU commands Date: Sun, 10 May 2015 12:39:03 +0300 Message-ID: <1431250746-11941-9-git-send-email-amirv@mellanox.com> References: <1431250746-11941-1-git-send-email-amirv@mellanox.com> Cc: netdev@vger.kernel.org, Amir Vadai , Or Gerlitz , Tal Alon , Achiad Shochat , Saeed Mahameed To: "David S. Miller" Return-path: Received: from ns1327.ztomy.com ([193.47.165.129]:44866 "EHLO mellanox.co.il" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1752392AbbEJJkO (ORCPT ); Sun, 10 May 2015 05:40:14 -0400 In-Reply-To: <1431250746-11941-1-git-send-email-amirv@mellanox.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Saeed Mahameed Introduce set/Query low level functions to access MTU in hardware. To be used by the netdev. Signed-off-by: Saeed Mahameed Signed-off-by: Amir Vadai --- drivers/net/ethernet/mellanox/mlx5/core/port.c | 56 ++++++++++++++++++++++++++ include/linux/mlx5/driver.h | 4 ++ 2 files changed, 60 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/port.c b/drivers/net/ethernet/mellanox/mlx5/core/port.c index 742a6fb..e56a0b6 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/port.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/port.c @@ -211,3 +211,59 @@ int mlx5_query_port_status(struct mlx5_core_dev *dev, u8 *status) *status = MLX5_GET(paos_reg, out, oper_status); return err; } + +static int mlx5_query_port_mtu(struct mlx5_core_dev *dev, + int *admin_mtu, int *max_mtu, int *oper_mtu) +{ + u32 in[MLX5_ST_SZ_DW(pmtu_reg)]; + u32 out[MLX5_ST_SZ_DW(pmtu_reg)]; + int err; + + memset(in, 0, sizeof(in)); + + MLX5_SET(pmtu_reg, in, local_port, 1); + + err = mlx5_core_access_reg(dev, in, sizeof(in), out, + sizeof(out), MLX5_REG_PMTU, 0, 0); + if (err) + return err; + + if (max_mtu) + *max_mtu = MLX5_GET(pmtu_reg, out, max_mtu); + if (oper_mtu) + *oper_mtu = MLX5_GET(pmtu_reg, out, oper_mtu); + if (admin_mtu) + *admin_mtu = MLX5_GET(pmtu_reg, out, admin_mtu); + + return 0; +} + +int mlx5_set_port_mtu(struct mlx5_core_dev *dev, int mtu) +{ + u32 in[MLX5_ST_SZ_DW(pmtu_reg)]; + u32 out[MLX5_ST_SZ_DW(pmtu_reg)]; + int err; + + memset(in, 0, sizeof(in)); + + MLX5_SET(pmtu_reg, in, admin_mtu, mtu); + MLX5_SET(pmtu_reg, in, local_port, 1); + + err = mlx5_core_access_reg(dev, in, sizeof(in), out, + sizeof(out), MLX5_REG_PMTU, 0, 1); + + return err; +} +EXPORT_SYMBOL_GPL(mlx5_set_port_mtu); + +int mlx5_query_port_max_mtu(struct mlx5_core_dev *dev, int *max_mtu) +{ + return mlx5_query_port_mtu(dev, NULL, max_mtu, NULL); +} +EXPORT_SYMBOL_GPL(mlx5_query_port_max_mtu); + +int mlx5_query_port_oper_mtu(struct mlx5_core_dev *dev, int *oper_mtu) +{ + return mlx5_query_port_mtu(dev, NULL, NULL, oper_mtu); +} +EXPORT_SYMBOL_GPL(mlx5_query_port_oper_mtu); diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index a79a2f9..777565e 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -717,6 +717,10 @@ int mlx5_set_port_status(struct mlx5_core_dev *dev, enum mlx5_port_status status); int mlx5_query_port_status(struct mlx5_core_dev *dev, u8 *status); +int mlx5_set_port_mtu(struct mlx5_core_dev *dev, int mtu); +int mlx5_query_port_max_mtu(struct mlx5_core_dev *dev, int *max_mtu); +int mlx5_query_port_oper_mtu(struct mlx5_core_dev *dev, int *oper_mtu); + int mlx5_debug_eq_add(struct mlx5_core_dev *dev, struct mlx5_eq *eq); void mlx5_debug_eq_remove(struct mlx5_core_dev *dev, struct mlx5_eq *eq); int mlx5_core_eq_query(struct mlx5_core_dev *dev, struct mlx5_eq *eq, -- 1.9.3