From 1c29146d3821be984030b49cf9509a269edc3b8b Mon Sep 17 00:00:00 2001 From: Ido Shamay Date: Thu, 2 Apr 2015 16:31:12 +0300 Subject: [PATCH] net/mlx4: Add mlx4_SET_VPORT_QOS implementation Add the SET_VPORT_QOS device command, which is ntended for virtual granular QoS configuration per VF in SRIOV mode. The SET_VPORT_QOS command sets and queries QoS parameters of a VPort. Each priority allowed for a VPort is assigned with a share of the BW, and a BW limitation. QoS parameters can be modified at any time, but must be initialized before any QP is associated with the VPort. Signed-off-by: Ido Shamay Signed-off-by: Or Gerlitz Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/cmd.c | 9 +++ drivers/net/ethernet/mellanox/mlx4/fw_qos.c | 89 +++++++++++++++++++++ drivers/net/ethernet/mellanox/mlx4/fw_qos.h | 36 +++++++++ include/linux/mlx4/cmd.h | 1 + 4 files changed, 135 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c index 79cc5ec57dca..af95231ba3e2 100644 --- a/drivers/net/ethernet/mellanox/mlx4/cmd.c +++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c @@ -1463,6 +1463,15 @@ static struct mlx4_cmd_info cmd_info[] = { .verify = NULL, .wrapper = mlx4_CMD_EPERM_wrapper, }, + { + .opcode = MLX4_CMD_SET_VPORT_QOS, + .has_inbox = false, + .has_outbox = true, + .out_is_imm = false, + .encode_slave_id = false, + .verify = NULL, + .wrapper = mlx4_CMD_EPERM_wrapper, + }, { .opcode = MLX4_CMD_CONF_SPECIAL_QP, .has_inbox = false, diff --git a/drivers/net/ethernet/mellanox/mlx4/fw_qos.c b/drivers/net/ethernet/mellanox/mlx4/fw_qos.c index 5ce3440b99c7..8f2fde0487c4 100644 --- a/drivers/net/ethernet/mellanox/mlx4/fw_qos.c +++ b/drivers/net/ethernet/mellanox/mlx4/fw_qos.c @@ -42,6 +42,12 @@ enum { MLX4_ALLOCATE_VPP_QUERY = 0x1 }; +enum { + /* set vport qos opcode modifiers */ + MLX4_SET_VPORT_QOS_SET = 0x0, + MLX4_SET_VPORT_QOS_QUERY = 0x1 +}; + struct mlx4_set_port_prio2tc_context { u8 prio2tc[4]; }; @@ -63,6 +69,19 @@ struct mlx4_alloc_vpp_param { __be32 vpp_p_up[MLX4_NUM_UP]; }; +struct mlx4_prio_qos_param { + __be32 bw_share; + __be32 max_avg_bw; + __be32 reserved; + __be32 enable; + __be32 reserved1[4]; +}; + +struct mlx4_set_vport_context { + __be32 reserved[8]; + struct mlx4_prio_qos_param qos_p_up[MLX4_NUM_UP]; +}; + int mlx4_SET_PORT_PRIO2TC(struct mlx4_dev *dev, u8 port, u8 *prio2tc) { struct mlx4_cmd_mailbox *mailbox; @@ -198,3 +217,73 @@ int mlx4_ALLOCATE_VPP_set(struct mlx4_dev *dev, u8 port, u8 *vpp_p_up) return err; } EXPORT_SYMBOL(mlx4_ALLOCATE_VPP_set); + +int mlx4_SET_VPORT_QOS_get(struct mlx4_dev *dev, u8 port, u8 vport, + struct mlx4_vport_qos_param *out_param) +{ + int i; + int err; + struct mlx4_cmd_mailbox *mailbox; + struct mlx4_set_vport_context *ctx; + + mailbox = mlx4_alloc_cmd_mailbox(dev); + if (IS_ERR(mailbox)) + return PTR_ERR(mailbox); + + ctx = mailbox->buf; + + err = mlx4_cmd_box(dev, 0, mailbox->dma, (vport << 8) | port, + MLX4_SET_VPORT_QOS_QUERY, + MLX4_CMD_SET_VPORT_QOS, + MLX4_CMD_TIME_CLASS_A, + MLX4_CMD_NATIVE); + if (err) + goto out; + + for (i = 0; i < MLX4_NUM_UP; i++) { + out_param[i].bw_share = be32_to_cpu(ctx->qos_p_up[i].bw_share); + out_param[i].max_avg_bw = + be32_to_cpu(ctx->qos_p_up[i].max_avg_bw); + out_param[i].enable = + !!(be32_to_cpu(ctx->qos_p_up[i].enable) & 31); + } + +out: + mlx4_free_cmd_mailbox(dev, mailbox); + + return err; +} +EXPORT_SYMBOL(mlx4_SET_VPORT_QOS_get); + +int mlx4_SET_VPORT_QOS_set(struct mlx4_dev *dev, u8 port, u8 vport, + struct mlx4_vport_qos_param *in_param) +{ + int i; + int err; + struct mlx4_cmd_mailbox *mailbox; + struct mlx4_set_vport_context *ctx; + + mailbox = mlx4_alloc_cmd_mailbox(dev); + if (IS_ERR(mailbox)) + return PTR_ERR(mailbox); + + ctx = mailbox->buf; + + for (i = 0; i < MLX4_NUM_UP; i++) { + ctx->qos_p_up[i].bw_share = cpu_to_be32(in_param[i].bw_share); + ctx->qos_p_up[i].max_avg_bw = + cpu_to_be32(in_param[i].max_avg_bw); + ctx->qos_p_up[i].enable = + cpu_to_be32(in_param[i].enable << 31); + } + + err = mlx4_cmd(dev, mailbox->dma, (vport << 8) | port, + MLX4_SET_VPORT_QOS_SET, + MLX4_CMD_SET_VPORT_QOS, + MLX4_CMD_TIME_CLASS_A, + MLX4_CMD_NATIVE); + + mlx4_free_cmd_mailbox(dev, mailbox); + return err; +} +EXPORT_SYMBOL(mlx4_SET_VPORT_QOS_set); diff --git a/drivers/net/ethernet/mellanox/mlx4/fw_qos.h b/drivers/net/ethernet/mellanox/mlx4/fw_qos.h index be79951c44ef..b3fffafff062 100644 --- a/drivers/net/ethernet/mellanox/mlx4/fw_qos.h +++ b/drivers/net/ethernet/mellanox/mlx4/fw_qos.h @@ -41,6 +41,12 @@ #define MLX4_NUM_UP 8 #define MLX4_NUM_TC 8 +struct mlx4_vport_qos_param { + u32 bw_share; + u32 max_avg_bw; + u8 enable; +}; + /** * mlx4_SET_PORT_PRIO2TC - This routine maps user priorities to traffic * classes of a given port and device. @@ -100,4 +106,34 @@ int mlx4_ALLOCATE_VPP_get(struct mlx4_dev *dev, u8 port, **/ int mlx4_ALLOCATE_VPP_set(struct mlx4_dev *dev, u8 port, u8 *vpp_p_up); +/** + * mlx4_SET_VPORT_QOS_get - Query QoS proporties of a Vport. + * Each priority allowed for the Vport is assigned with a share of the BW, + * and a BW limitation. This commands query the current QoS values. + * + * @dev: mlx4_dev. + * @port: Physical port number. + * @vport: Vport id. + * @out_param: Array of mlx4_vport_qos_param that will contain the values. + * + * Returns 0 on success or a negative mlx4_core errno code. + **/ +int mlx4_SET_VPORT_QOS_get(struct mlx4_dev *dev, u8 port, u8 vport, + struct mlx4_vport_qos_param *out_param); + +/** + * mlx4_SET_VPORT_QOS_set - Set QoS proporties of a Vport. + * QoS parameters can be modified at any time, but must be initialized + * before any QP is associated with the VPort. + * + * @dev: mlx4_dev. + * @port: Physical port number. + * @vport: Vport id. + * @out_param: Array of mlx4_vport_qos_param which holds the requested values. + * + * Returns 0 on success or a negative mlx4_core errno code. + **/ +int mlx4_SET_VPORT_QOS_set(struct mlx4_dev *dev, u8 port, u8 vport, + struct mlx4_vport_qos_param *in_param); + #endif /* MLX4_FW_QOS_H */ diff --git a/include/linux/mlx4/cmd.h b/include/linux/mlx4/cmd.h index e0f88a098fb8..88326ed0033a 100644 --- a/include/linux/mlx4/cmd.h +++ b/include/linux/mlx4/cmd.h @@ -69,6 +69,7 @@ enum { MLX4_CMD_SET_ICM_SIZE = 0xffd, MLX4_CMD_ACCESS_REG = 0x3b, MLX4_CMD_ALLOCATE_VPP = 0x80, + MLX4_CMD_SET_VPORT_QOS = 0x81, /*master notify fw on finish for slave's flr*/ MLX4_CMD_INFORM_FLR_DONE = 0x5b, -- 2.20.1