net/mlx5e: Move generic functions to new file

These functions were identified as ones that could be made generic and
used by multiple drivers.  Most of the contents of en_rx_am.c are moved
to net_dim.c.

Signed-off-by: Andy Gospodarek <gospo@broadcom.com>
Acked-by: Tal Gilboa <talgi@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx5/core/Makefile

@@ -14,8 +14,8 @@ mlx5_core-$(CONFIG_MLX5_FPGA) += fpga/cmd.o fpga/core.o fpga/conn.o fpga/sdk.o \
 		fpga/ipsec.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_rx_am.o en_txrx.o en_stats.o vxlan.o \
+		en_tx.o en_rx.o en_dim.o en_txrx.o en_stats.o vxlan.o \
-		en_arfs.o en_fs_ethtool.o en_selftest.o
+		en_arfs.o en_fs_ethtool.o en_selftest.o net_dim.o
 
 mlx5_core-$(CONFIG_MLX5_MPFS) += lib/mpfs.o
 

drivers/net/ethernet/mellanox/mlx5/core/en.h

@@ -50,7 +50,7 @@
 #include "wq.h"
 #include "mlx5_core.h"
 #include "en_stats.h"
-#include "en_dim.h"
+#include "net_dim.h"
 
 #define MLX5_SET_CFG(p, f, v) MLX5_SET(create_flow_group_in, p, f, v)
 

drivers/net/ethernet/mellanox/mlx5/core/en_dim.c

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#include "en.h"
+
+void mlx5e_rx_am_work(struct work_struct *work)
+{
+	struct mlx5e_rx_am *am = container_of(work, struct mlx5e_rx_am,
+					      work);
+	struct mlx5e_rq *rq = container_of(am, struct mlx5e_rq, am);
+	struct mlx5e_cq_moder cur_profile = mlx5e_am_get_profile(am->mode,
+								 am->profile_ix);
+
+	mlx5_core_modify_cq_moderation(rq->mdev, &rq->cq.mcq,
+				       cur_profile.usec, cur_profile.pkts);
+
+	am->state = MLX5E_AM_START_MEASURE;
+}

drivers/net/ethernet/mellanox/mlx5/core/net_dim.c

@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
+ * Copyright (c) 2017-2018, Broadcom Limited. All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -32,11 +33,11 @@
 
 #include "en.h"
 
+#define MLX5E_PARAMS_AM_NUM_PROFILES 5
 /* Adaptive moderation profiles */
 #define MLX5E_AM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE 256
 #define MLX5E_RX_AM_DEF_PROFILE_CQE 1
 #define MLX5E_RX_AM_DEF_PROFILE_EQE 1
-#define MLX5E_PARAMS_AM_NUM_PROFILES 5
 
 /* All profiles sizes must be MLX5E_PARAMS_AM_NUM_PROFILES */
 #define MLX5_AM_EQE_PROFILES { \
@@ -61,7 +62,7 @@ profile[MLX5_CQ_PERIOD_NUM_MODES][MLX5E_PARAMS_AM_NUM_PROFILES] = {
 	MLX5_AM_CQE_PROFILES,
 };
 
-static inline struct mlx5e_cq_moder mlx5e_am_get_profile(u8 cq_period_mode, int ix)
+struct mlx5e_cq_moder mlx5e_am_get_profile(u8 cq_period_mode, int ix)
 {
 	struct mlx5e_cq_moder cq_moder;
 
@@ -82,7 +83,6 @@ struct mlx5e_cq_moder mlx5e_am_get_def_profile(u8 rx_cq_period_mode)
 	return mlx5e_am_get_profile(rx_cq_period_mode, default_profile_ix);
 }
 
-
 static bool mlx5e_am_on_top(struct mlx5e_rx_am *am)
 {
 	switch (am->tune_state) {
@@ -273,19 +273,6 @@ static void mlx5e_am_calc_stats(struct mlx5e_rx_am_sample *start,
 					delta_us);
 }
 
-void mlx5e_rx_am_work(struct work_struct *work)
-{
-	struct mlx5e_rx_am *am = container_of(work, struct mlx5e_rx_am,
-					      work);
-	struct mlx5e_rq *rq = container_of(am, struct mlx5e_rq, am);
-	struct mlx5e_cq_moder cur_profile = profile[am->mode][am->profile_ix];
-
-	mlx5_core_modify_cq_moderation(rq->mdev, &rq->cq.mcq,
-				       cur_profile.usec, cur_profile.pkts);
-
-	am->state = MLX5E_AM_START_MEASURE;
-}
-
 void mlx5e_rx_am(struct mlx5e_rx_am *am,
 		 u16 event_ctr,
 		 u64 packets,

drivers/net/ethernet/mellanox/mlx5/core/net_dim.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2013-2015, Mellanox Technologies, Ltd.  All rights reserved.
- * Copyright (c) 2017-2018, Broadcom Limited
+ * Copyright (c) 2017-2018, Broadcom Limited.  All rights reserved.
  *
  * This software is available to you under a choice of one of two
  * licenses.  You may choose to be licensed under the terms of the GNU
@@ -98,5 +98,6 @@ void mlx5e_rx_am(struct mlx5e_rx_am *am,
 		 u64 bytes);
 void mlx5e_rx_am_work(struct work_struct *work);
 struct mlx5e_cq_moder mlx5e_am_get_def_profile(u8 rx_cq_period_mode);
+struct mlx5e_cq_moder mlx5e_am_get_profile(u8 cq_period_mode, int ix);
 
 #endif /* MLX5_AM_H */