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Message-Id: <20190422223306.31568-10-saeedm@mellanox.com>
Date: Mon, 22 Apr 2019 15:33:01 -0700
From: Saeed Mahameed <saeedm@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, Jesper Dangaard Brouer <brouer@...hat.com>,
Jonathan Lemon <bsd@...com>,
Maxim Mikityanskiy <maximmi@...lanox.com>,
Tariq Toukan <tariqt@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>
Subject: [net-next 09/14] net/mlx5e: Move parameter calculation functions to en/params.c
From: Maxim Mikityanskiy <maximmi@...lanox.com>
This commit moves the parameter calculation functions to a separate file
for better modularity and code sharing with future features.
Signed-off-by: Maxim Mikityanskiy <maximmi@...lanox.com>
Reviewed-by: Tariq Toukan <tariqt@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
---
.../net/ethernet/mellanox/mlx5/core/Makefile | 3 +-
.../ethernet/mellanox/mlx5/core/en/params.c | 102 ++++++++++++++++++
.../ethernet/mellanox/mlx5/core/en/params.h | 23 ++++
.../net/ethernet/mellanox/mlx5/core/en_main.c | 99 +----------------
4 files changed, 128 insertions(+), 99 deletions(-)
create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/params.c
create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/params.h
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/Makefile
index 1a16f6d73cbc..3dbbe3b643b3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/Makefile
+++ b/drivers/net/ethernet/mellanox/mlx5/core/Makefile
@@ -22,7 +22,8 @@ mlx5_core-y := main.o cmd.o debugfs.o fw.o eq.o uar.o pagealloc.o \
#
mlx5_core-$(CONFIG_MLX5_CORE_EN) += en_main.o en_common.o en_fs.o en_ethtool.o \
en_tx.o en_rx.o en_dim.o en_txrx.o en/xdp.o en_stats.o \
- en_selftest.o en/port.o en/monitor_stats.o en/reporter_tx.o
+ en_selftest.o en/port.o en/monitor_stats.o en/reporter_tx.o \
+ en/params.o
#
# Netdev extra
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/params.c b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
new file mode 100644
index 000000000000..658337c3bba1
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/params.c
@@ -0,0 +1,102 @@
+// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
+/* Copyright (c) 2019 Mellanox Technologies. */
+
+#include "en/params.h"
+
+u32 mlx5e_rx_get_linear_frag_sz(struct mlx5e_params *params)
+{
+ u16 hw_mtu = MLX5E_SW2HW_MTU(params, params->sw_mtu);
+ u16 linear_rq_headroom = params->xdp_prog ?
+ XDP_PACKET_HEADROOM : MLX5_RX_HEADROOM;
+ u32 frag_sz;
+
+ linear_rq_headroom += NET_IP_ALIGN;
+
+ frag_sz = MLX5_SKB_FRAG_SZ(linear_rq_headroom + hw_mtu);
+
+ if (params->xdp_prog && frag_sz < PAGE_SIZE)
+ frag_sz = PAGE_SIZE;
+
+ return frag_sz;
+}
+
+u8 mlx5e_mpwqe_log_pkts_per_wqe(struct mlx5e_params *params)
+{
+ u32 linear_frag_sz = mlx5e_rx_get_linear_frag_sz(params);
+
+ return MLX5_MPWRQ_LOG_WQE_SZ - order_base_2(linear_frag_sz);
+}
+
+bool mlx5e_rx_is_linear_skb(struct mlx5_core_dev *mdev,
+ struct mlx5e_params *params)
+{
+ u32 frag_sz = mlx5e_rx_get_linear_frag_sz(params);
+
+ return !params->lro_en && frag_sz <= PAGE_SIZE;
+}
+
+#define MLX5_MAX_MPWQE_LOG_WQE_STRIDE_SZ ((BIT(__mlx5_bit_sz(wq, log_wqe_stride_size)) - 1) + \
+ MLX5_MPWQE_LOG_STRIDE_SZ_BASE)
+bool mlx5e_rx_mpwqe_is_linear_skb(struct mlx5_core_dev *mdev,
+ struct mlx5e_params *params)
+{
+ u32 frag_sz = mlx5e_rx_get_linear_frag_sz(params);
+ s8 signed_log_num_strides_param;
+ u8 log_num_strides;
+
+ if (!mlx5e_rx_is_linear_skb(mdev, params))
+ return false;
+
+ if (order_base_2(frag_sz) > MLX5_MAX_MPWQE_LOG_WQE_STRIDE_SZ)
+ return false;
+
+ if (MLX5_CAP_GEN(mdev, ext_stride_num_range))
+ return true;
+
+ log_num_strides = MLX5_MPWRQ_LOG_WQE_SZ - order_base_2(frag_sz);
+ signed_log_num_strides_param =
+ (s8)log_num_strides - MLX5_MPWQE_LOG_NUM_STRIDES_BASE;
+
+ return signed_log_num_strides_param >= 0;
+}
+
+u8 mlx5e_mpwqe_get_log_rq_size(struct mlx5e_params *params)
+{
+ if (params->log_rq_mtu_frames <
+ mlx5e_mpwqe_log_pkts_per_wqe(params) + MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW)
+ return MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW;
+
+ return params->log_rq_mtu_frames - mlx5e_mpwqe_log_pkts_per_wqe(params);
+}
+
+u8 mlx5e_mpwqe_get_log_stride_size(struct mlx5_core_dev *mdev,
+ struct mlx5e_params *params)
+{
+ if (mlx5e_rx_mpwqe_is_linear_skb(mdev, params))
+ return order_base_2(mlx5e_rx_get_linear_frag_sz(params));
+
+ return MLX5_MPWRQ_DEF_LOG_STRIDE_SZ(mdev);
+}
+
+u8 mlx5e_mpwqe_get_log_num_strides(struct mlx5_core_dev *mdev,
+ struct mlx5e_params *params)
+{
+ return MLX5_MPWRQ_LOG_WQE_SZ -
+ mlx5e_mpwqe_get_log_stride_size(mdev, params);
+}
+
+u16 mlx5e_get_rq_headroom(struct mlx5_core_dev *mdev,
+ struct mlx5e_params *params)
+{
+ u16 linear_rq_headroom = params->xdp_prog ?
+ XDP_PACKET_HEADROOM : MLX5_RX_HEADROOM;
+ bool is_linear_skb;
+
+ linear_rq_headroom += NET_IP_ALIGN;
+
+ is_linear_skb = (params->rq_wq_type == MLX5_WQ_TYPE_CYCLIC) ?
+ mlx5e_rx_is_linear_skb(mdev, params) :
+ mlx5e_rx_mpwqe_is_linear_skb(mdev, params);
+
+ return is_linear_skb ? linear_rq_headroom : 0;
+}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/params.h b/drivers/net/ethernet/mellanox/mlx5/core/en/params.h
new file mode 100644
index 000000000000..0ef1436c4c76
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/params.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
+/* Copyright (c) 2019 Mellanox Technologies. */
+
+#ifndef __MLX5_EN_PARAMS_H__
+#define __MLX5_EN_PARAMS_H__
+
+#include "en.h"
+
+u32 mlx5e_rx_get_linear_frag_sz(struct mlx5e_params *params);
+u8 mlx5e_mpwqe_log_pkts_per_wqe(struct mlx5e_params *params);
+bool mlx5e_rx_is_linear_skb(struct mlx5_core_dev *mdev,
+ struct mlx5e_params *params);
+bool mlx5e_rx_mpwqe_is_linear_skb(struct mlx5_core_dev *mdev,
+ struct mlx5e_params *params);
+u8 mlx5e_mpwqe_get_log_rq_size(struct mlx5e_params *params);
+u8 mlx5e_mpwqe_get_log_stride_size(struct mlx5_core_dev *mdev,
+ struct mlx5e_params *params);
+u8 mlx5e_mpwqe_get_log_num_strides(struct mlx5_core_dev *mdev,
+ struct mlx5e_params *params);
+u16 mlx5e_get_rq_headroom(struct mlx5_core_dev *mdev,
+ struct mlx5e_params *params);
+
+#endif /* __MLX5_EN_PARAMS_H__ */
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index a3397d5bfa76..8cab86a558ab 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -55,6 +55,7 @@
#include "lib/eq.h"
#include "en/monitor_stats.h"
#include "en/reporter.h"
+#include "en/params.h"
struct mlx5e_rq_param {
u32 rqc[MLX5_ST_SZ_DW(rqc)];
@@ -103,104 +104,6 @@ bool mlx5e_check_fragmented_striding_rq_cap(struct mlx5_core_dev *mdev)
return true;
}
-static u32 mlx5e_rx_get_linear_frag_sz(struct mlx5e_params *params)
-{
- u16 hw_mtu = MLX5E_SW2HW_MTU(params, params->sw_mtu);
- u16 linear_rq_headroom = params->xdp_prog ?
- XDP_PACKET_HEADROOM : MLX5_RX_HEADROOM;
- u32 frag_sz;
-
- linear_rq_headroom += NET_IP_ALIGN;
-
- frag_sz = MLX5_SKB_FRAG_SZ(linear_rq_headroom + hw_mtu);
-
- if (params->xdp_prog && frag_sz < PAGE_SIZE)
- frag_sz = PAGE_SIZE;
-
- return frag_sz;
-}
-
-static u8 mlx5e_mpwqe_log_pkts_per_wqe(struct mlx5e_params *params)
-{
- u32 linear_frag_sz = mlx5e_rx_get_linear_frag_sz(params);
-
- return MLX5_MPWRQ_LOG_WQE_SZ - order_base_2(linear_frag_sz);
-}
-
-static bool mlx5e_rx_is_linear_skb(struct mlx5_core_dev *mdev,
- struct mlx5e_params *params)
-{
- u32 frag_sz = mlx5e_rx_get_linear_frag_sz(params);
-
- return !params->lro_en && frag_sz <= PAGE_SIZE;
-}
-
-#define MLX5_MAX_MPWQE_LOG_WQE_STRIDE_SZ ((BIT(__mlx5_bit_sz(wq, log_wqe_stride_size)) - 1) + \
- MLX5_MPWQE_LOG_STRIDE_SZ_BASE)
-static bool mlx5e_rx_mpwqe_is_linear_skb(struct mlx5_core_dev *mdev,
- struct mlx5e_params *params)
-{
- u32 frag_sz = mlx5e_rx_get_linear_frag_sz(params);
- s8 signed_log_num_strides_param;
- u8 log_num_strides;
-
- if (!mlx5e_rx_is_linear_skb(mdev, params))
- return false;
-
- if (order_base_2(frag_sz) > MLX5_MAX_MPWQE_LOG_WQE_STRIDE_SZ)
- return false;
-
- if (MLX5_CAP_GEN(mdev, ext_stride_num_range))
- return true;
-
- log_num_strides = MLX5_MPWRQ_LOG_WQE_SZ - order_base_2(frag_sz);
- signed_log_num_strides_param =
- (s8)log_num_strides - MLX5_MPWQE_LOG_NUM_STRIDES_BASE;
-
- return signed_log_num_strides_param >= 0;
-}
-
-static u8 mlx5e_mpwqe_get_log_rq_size(struct mlx5e_params *params)
-{
- if (params->log_rq_mtu_frames <
- mlx5e_mpwqe_log_pkts_per_wqe(params) + MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW)
- return MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE_MPW;
-
- return params->log_rq_mtu_frames - mlx5e_mpwqe_log_pkts_per_wqe(params);
-}
-
-static u8 mlx5e_mpwqe_get_log_stride_size(struct mlx5_core_dev *mdev,
- struct mlx5e_params *params)
-{
- if (mlx5e_rx_mpwqe_is_linear_skb(mdev, params))
- return order_base_2(mlx5e_rx_get_linear_frag_sz(params));
-
- return MLX5_MPWRQ_DEF_LOG_STRIDE_SZ(mdev);
-}
-
-static u8 mlx5e_mpwqe_get_log_num_strides(struct mlx5_core_dev *mdev,
- struct mlx5e_params *params)
-{
- return MLX5_MPWRQ_LOG_WQE_SZ -
- mlx5e_mpwqe_get_log_stride_size(mdev, params);
-}
-
-static u16 mlx5e_get_rq_headroom(struct mlx5_core_dev *mdev,
- struct mlx5e_params *params)
-{
- u16 linear_rq_headroom = params->xdp_prog ?
- XDP_PACKET_HEADROOM : MLX5_RX_HEADROOM;
- bool is_linear_skb;
-
- linear_rq_headroom += NET_IP_ALIGN;
-
- is_linear_skb = (params->rq_wq_type == MLX5_WQ_TYPE_CYCLIC) ?
- mlx5e_rx_is_linear_skb(mdev, params) :
- mlx5e_rx_mpwqe_is_linear_skb(mdev, params);
-
- return is_linear_skb ? linear_rq_headroom : 0;
-}
-
void mlx5e_init_rq_type_params(struct mlx5_core_dev *mdev,
struct mlx5e_params *params)
{
--
2.20.1
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