net/mlx5e: Change Mellanox references in DIM code

Change all appropriate mlx5_am* and MLX5_AM* references to net_dim and
NET_DIM, respectively, in code that handles dynamic interrupt
moderation.  Also change all references from 'am' to 'dim' when used as
local variables and add generic profile references.
Signed-off-by: NAndy Gospodarek <gospo@broadcom.com>
Acked-by: NTal Gilboa <talgi@mellanox.com>
Acked-by: NSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

@@ -238,8 +238,8 @@ struct mlx5e_params {
 	u16 num_channels;
 	u8  num_tc;
 	bool rx_cqe_compress_def;
-	struct mlx5e_cq_moder rx_cq_moderation;
-	struct mlx5e_cq_moder tx_cq_moderation;
+	struct net_dim_cq_moder rx_cq_moderation;
+	struct net_dim_cq_moder tx_cq_moderation;
 	bool lro_en;
 	u32 lro_wqe_sz;
 	u16 tx_max_inline;
@@ -249,7 +249,7 @@ struct mlx5e_params {
 	u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE];
 	bool vlan_strip_disable;
 	bool scatter_fcs_en;
-	bool rx_am_enabled;
+	bool rx_dim_enabled;
 	u32 lro_timeout;
 	u32 pflags;
 	struct bpf_prog *xdp_prog;
@@ -528,7 +528,7 @@ struct mlx5e_rq {
 	unsigned long          state;
 	int                    ix;
 
-	struct mlx5e_rx_am     am; /* Adaptive Moderation */
+	struct net_dim         dim; /* Dynamic Interrupt Moderation */
 
 	/* XDP */
 	struct bpf_prog       *xdp_prog;
@@ -1080,4 +1080,5 @@ void mlx5e_build_nic_params(struct mlx5_core_dev *mdev,
 			    struct mlx5e_params *params,
 			    u16 max_channels);
 u8 mlx5e_params_calculate_tx_min_inline(struct mlx5_core_dev *mdev);
+void mlx5e_rx_dim_work(struct work_struct *work);
 #endif /* __MLX5_EN_H__ */

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

@@ -32,16 +32,16 @@
 
 #include "en.h"
 
-void mlx5e_rx_am_work(struct work_struct *work)
+void mlx5e_rx_dim_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);
+	struct net_dim *dim = container_of(work, struct net_dim,
+					   work);
+	struct mlx5e_rq *rq = container_of(dim, struct mlx5e_rq, dim);
+	struct net_dim_cq_moder cur_profile = net_dim_get_profile(dim->mode,
+								  dim->profile_ix);
 
 	mlx5_core_modify_cq_moderation(rq->mdev, &rq->cq.mcq,
 				       cur_profile.usec, cur_profile.pkts);
 
-	am->state = MLX5E_AM_START_MEASURE;
+	dim->state = NET_DIM_START_MEASURE;
 }

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

@@ -465,7 +465,7 @@ int mlx5e_ethtool_get_coalesce(struct mlx5e_priv *priv,
 	coal->rx_max_coalesced_frames = priv->channels.params.rx_cq_moderation.pkts;
 	coal->tx_coalesce_usecs       = priv->channels.params.tx_cq_moderation.usec;
 	coal->tx_max_coalesced_frames = priv->channels.params.tx_cq_moderation.pkts;
-	coal->use_adaptive_rx_coalesce = priv->channels.params.rx_am_enabled;
+	coal->use_adaptive_rx_coalesce = priv->channels.params.rx_dim_enabled;
 
 	return 0;
 }
@@ -519,7 +519,7 @@ int mlx5e_ethtool_set_coalesce(struct mlx5e_priv *priv,
 	new_channels.params.tx_cq_moderation.pkts = coal->tx_max_coalesced_frames;
 	new_channels.params.rx_cq_moderation.usec = coal->rx_coalesce_usecs;
 	new_channels.params.rx_cq_moderation.pkts = coal->rx_max_coalesced_frames;
-	new_channels.params.rx_am_enabled         = !!coal->use_adaptive_rx_coalesce;
+	new_channels.params.rx_dim_enabled        = !!coal->use_adaptive_rx_coalesce;
 
 	if (!test_bit(MLX5E_STATE_OPENED, &priv->state)) {
 		priv->channels.params = new_channels.params;
@@ -527,7 +527,7 @@ int mlx5e_ethtool_set_coalesce(struct mlx5e_priv *priv,
 	}
 	/* we are opened */
 
-	reset = !!coal->use_adaptive_rx_coalesce != priv->channels.params.rx_am_enabled;
+	reset = !!coal->use_adaptive_rx_coalesce != priv->channels.params.rx_dim_enabled;
 	if (!reset) {
 		mlx5e_set_priv_channels_coalesce(priv, coal);
 		priv->channels.params = new_channels.params;

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

@@ -677,8 +677,17 @@ static int mlx5e_alloc_rq(struct mlx5e_channel *c,
 		wqe->data.lkey = rq->mkey_be;
 	}
 
-	INIT_WORK(&rq->am.work, mlx5e_rx_am_work);
-	rq->am.mode = params->rx_cq_moderation.cq_period_mode;
+	INIT_WORK(&rq->dim.work, mlx5e_rx_dim_work);
+
+	switch (params->rx_cq_moderation.cq_period_mode) {
+	case MLX5_CQ_PERIOD_MODE_START_FROM_CQE:
+		rq->dim.mode = NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE;
+		break;
+	case MLX5_CQ_PERIOD_MODE_START_FROM_EQE:
+	default:
+		rq->dim.mode = NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE;
+	}
+
 	rq->page_cache.head = 0;
 	rq->page_cache.tail = 0;
 
@@ -925,7 +934,7 @@ static int mlx5e_open_rq(struct mlx5e_channel *c,
 	if (err)
 		goto err_destroy_rq;
 
-	if (params->rx_am_enabled)
+	if (params->rx_dim_enabled)
 		c->rq.state |= BIT(MLX5E_RQ_STATE_AM);
 
 	return 0;
@@ -958,7 +967,7 @@ static void mlx5e_deactivate_rq(struct mlx5e_rq *rq)
 
 static void mlx5e_close_rq(struct mlx5e_rq *rq)
 {
-	cancel_work_sync(&rq->am.work);
+	cancel_work_sync(&rq->dim.work);
 	mlx5e_destroy_rq(rq);
 	mlx5e_free_rx_descs(rq);
 	mlx5e_free_rq(rq);
@@ -1571,7 +1580,7 @@ static void mlx5e_destroy_cq(struct mlx5e_cq *cq)
 }
 
 static int mlx5e_open_cq(struct mlx5e_channel *c,
-			 struct mlx5e_cq_moder moder,
+			 struct net_dim_cq_moder moder,
 			 struct mlx5e_cq_param *param,
 			 struct mlx5e_cq *cq)
 {
@@ -1753,7 +1762,7 @@ static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
 			      struct mlx5e_channel_param *cparam,
 			      struct mlx5e_channel **cp)
 {
-	struct mlx5e_cq_moder icocq_moder = {0, 0};
+	struct net_dim_cq_moder icocq_moder = {0, 0};
 	struct net_device *netdev = priv->netdev;
 	int cpu = mlx5e_get_cpu(priv, ix);
 	struct mlx5e_channel *c;
@@ -2005,7 +2014,7 @@ static void mlx5e_build_ico_cq_param(struct mlx5e_priv *priv,
 
 	mlx5e_build_common_cq_param(priv, param);
 
-	param->cq_period_mode = MLX5_CQ_PERIOD_MODE_START_FROM_EQE;
+	param->cq_period_mode = NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE;
 }
 
 static void mlx5e_build_icosq_param(struct mlx5e_priv *priv,
@@ -4047,9 +4056,18 @@ void mlx5e_set_rx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode)
 		params->rx_cq_moderation.usec =
 			MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC_FROM_CQE;
 
-	if (params->rx_am_enabled)
-		params->rx_cq_moderation =
-			mlx5e_am_get_def_profile(cq_period_mode);
+	if (params->rx_dim_enabled) {
+		switch (cq_period_mode) {
+		case MLX5_CQ_PERIOD_MODE_START_FROM_CQE:
+			params->rx_cq_moderation =
+				net_dim_get_def_profile(NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE);
+			break;
+		case MLX5_CQ_PERIOD_MODE_START_FROM_EQE:
+		default:
+			params->rx_cq_moderation =
+				net_dim_get_def_profile(NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE);
+		}
+	}
 
 	MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_CQE_BASED_MODER,
 			params->rx_cq_moderation.cq_period_mode ==
@@ -4111,7 +4129,7 @@ void mlx5e_build_nic_params(struct mlx5_core_dev *mdev,
 	cq_period_mode = MLX5_CAP_GEN(mdev, cq_period_start_from_cqe) ?
 			MLX5_CQ_PERIOD_MODE_START_FROM_CQE :
 			MLX5_CQ_PERIOD_MODE_START_FROM_EQE;
-	params->rx_am_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
+	params->rx_dim_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
 	mlx5e_set_rx_cq_mode_params(params, cq_period_mode);
 	mlx5e_set_tx_cq_mode_params(params, cq_period_mode);
 

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

@@ -884,7 +884,7 @@ static void mlx5e_build_rep_params(struct mlx5_core_dev *mdev,
 	params->rq_wq_type  = MLX5_WQ_TYPE_LINKED_LIST;
 	params->log_rq_size = MLX5E_PARAMS_MINIMUM_LOG_RQ_SIZE;
 
-	params->rx_am_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
+	params->rx_dim_enabled = MLX5_CAP_GEN(mdev, cq_moderation);
 	mlx5e_set_rx_cq_mode_params(params, cq_period_mode);
 
 	params->tx_max_inline         = mlx5e_get_max_inline_cap(mdev);

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

@@ -79,10 +79,10 @@ int mlx5e_napi_poll(struct napi_struct *napi, int budget)
 		mlx5e_cq_arm(&c->sq[i].cq);
 
 	if (MLX5E_TEST_BIT(c->rq.state, MLX5E_RQ_STATE_AM))
-		mlx5e_rx_am(&c->rq.am,
-			    c->rq.cq.event_ctr,
-			    c->rq.stats.packets,
-			    c->rq.stats.bytes);
+		net_dim(&c->rq.dim,
+			c->rq.cq.event_ctr,
+			c->rq.stats.packets,
+			c->rq.stats.bytes);
 
 	mlx5e_cq_arm(&c->rq.cq);
 	mlx5e_cq_arm(&c->icosq.cq);

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

@@ -33,22 +33,22 @@
 
 #include "en.h"
 
-#define MLX5E_PARAMS_AM_NUM_PROFILES 5
+#define NET_DIM_PARAMS_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
-
-/* All profiles sizes must be MLX5E_PARAMS_AM_NUM_PROFILES */
-#define MLX5_AM_EQE_PROFILES { \
-	{1,   MLX5E_AM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
-	{8,   MLX5E_AM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
-	{64,  MLX5E_AM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
-	{128, MLX5E_AM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
-	{256, MLX5E_AM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
+#define NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE 256
+#define NET_DIM_DEF_PROFILE_CQE 1
+#define NET_DIM_DEF_PROFILE_EQE 1
+
+/* All profiles sizes must be NET_PARAMS_DIM_NUM_PROFILES */
+#define NET_DIM_EQE_PROFILES { \
+	{1,   NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
+	{8,   NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
+	{64,  NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
+	{128, NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
+	{256, NET_DIM_DEFAULT_RX_CQ_MODERATION_PKTS_FROM_EQE}, \
 }
 
-#define MLX5_AM_CQE_PROFILES { \
+#define NET_DIM_CQE_PROFILES { \
 	{2,  256},             \
 	{8,  128},             \
 	{16, 64},              \
@@ -56,193 +56,193 @@
 	{64, 64}               \
 }
 
-static const struct mlx5e_cq_moder
-profile[MLX5_CQ_PERIOD_NUM_MODES][MLX5E_PARAMS_AM_NUM_PROFILES] = {
-	MLX5_AM_EQE_PROFILES,
-	MLX5_AM_CQE_PROFILES,
+static const struct net_dim_cq_moder
+profile[NET_DIM_CQ_PERIOD_NUM_MODES][NET_DIM_PARAMS_NUM_PROFILES] = {
+	NET_DIM_EQE_PROFILES,
+	NET_DIM_CQE_PROFILES,
 };
 
-struct mlx5e_cq_moder mlx5e_am_get_profile(u8 cq_period_mode, int ix)
+struct net_dim_cq_moder net_dim_get_profile(u8 cq_period_mode, int ix)
 {
-	struct mlx5e_cq_moder cq_moder;
+	struct net_dim_cq_moder cq_moder;
 
 	cq_moder = profile[cq_period_mode][ix];
 	cq_moder.cq_period_mode = cq_period_mode;
 	return cq_moder;
 }
 
-struct mlx5e_cq_moder mlx5e_am_get_def_profile(u8 rx_cq_period_mode)
+struct net_dim_cq_moder net_dim_get_def_profile(u8 rx_cq_period_mode)
 {
 	int default_profile_ix;
 
-	if (rx_cq_period_mode == MLX5_CQ_PERIOD_MODE_START_FROM_CQE)
-		default_profile_ix = MLX5E_RX_AM_DEF_PROFILE_CQE;
-	else /* MLX5_CQ_PERIOD_MODE_START_FROM_EQE */
-		default_profile_ix = MLX5E_RX_AM_DEF_PROFILE_EQE;
+	if (rx_cq_period_mode == NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE)
+		default_profile_ix = NET_DIM_DEF_PROFILE_CQE;
+	else /* NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE */
+		default_profile_ix = NET_DIM_DEF_PROFILE_EQE;
 
-	return mlx5e_am_get_profile(rx_cq_period_mode, default_profile_ix);
+	return net_dim_get_profile(rx_cq_period_mode, default_profile_ix);
 }
 
-static bool mlx5e_am_on_top(struct mlx5e_rx_am *am)
+static bool net_dim_on_top(struct net_dim *dim)
 {
-	switch (am->tune_state) {
-	case MLX5E_AM_PARKING_ON_TOP:
-	case MLX5E_AM_PARKING_TIRED:
+	switch (dim->tune_state) {
+	case NET_DIM_PARKING_ON_TOP:
+	case NET_DIM_PARKING_TIRED:
 		return true;
-	case MLX5E_AM_GOING_RIGHT:
-		return (am->steps_left > 1) && (am->steps_right == 1);
-	default: /* MLX5E_AM_GOING_LEFT */
-		return (am->steps_right > 1) && (am->steps_left == 1);
+	case NET_DIM_GOING_RIGHT:
+		return (dim->steps_left > 1) && (dim->steps_right == 1);
+	default: /* NET_DIM_GOING_LEFT */
+		return (dim->steps_right > 1) && (dim->steps_left == 1);
 	}
 }
 
-static void mlx5e_am_turn(struct mlx5e_rx_am *am)
+static void net_dim_turn(struct net_dim *dim)
 {
-	switch (am->tune_state) {
-	case MLX5E_AM_PARKING_ON_TOP:
-	case MLX5E_AM_PARKING_TIRED:
+	switch (dim->tune_state) {
+	case NET_DIM_PARKING_ON_TOP:
+	case NET_DIM_PARKING_TIRED:
 		break;
-	case MLX5E_AM_GOING_RIGHT:
-		am->tune_state = MLX5E_AM_GOING_LEFT;
-		am->steps_left = 0;
+	case NET_DIM_GOING_RIGHT:
+		dim->tune_state = NET_DIM_GOING_LEFT;
+		dim->steps_left = 0;
 		break;
-	case MLX5E_AM_GOING_LEFT:
-		am->tune_state = MLX5E_AM_GOING_RIGHT;
-		am->steps_right = 0;
+	case NET_DIM_GOING_LEFT:
+		dim->tune_state = NET_DIM_GOING_RIGHT;
+		dim->steps_right = 0;
 		break;
 	}
 }
 
-static int mlx5e_am_step(struct mlx5e_rx_am *am)
+static int net_dim_step(struct net_dim *dim)
 {
-	if (am->tired == (MLX5E_PARAMS_AM_NUM_PROFILES * 2))
-		return MLX5E_AM_TOO_TIRED;
+	if (dim->tired == (NET_DIM_PARAMS_NUM_PROFILES * 2))
+		return NET_DIM_TOO_TIRED;
 
-	switch (am->tune_state) {
-	case MLX5E_AM_PARKING_ON_TOP:
-	case MLX5E_AM_PARKING_TIRED:
+	switch (dim->tune_state) {
+	case NET_DIM_PARKING_ON_TOP:
+	case NET_DIM_PARKING_TIRED:
 		break;
-	case MLX5E_AM_GOING_RIGHT:
-		if (am->profile_ix == (MLX5E_PARAMS_AM_NUM_PROFILES - 1))
-			return MLX5E_AM_ON_EDGE;
-		am->profile_ix++;
-		am->steps_right++;
+	case NET_DIM_GOING_RIGHT:
+		if (dim->profile_ix == (NET_DIM_PARAMS_NUM_PROFILES - 1))
+			return NET_DIM_ON_EDGE;
+		dim->profile_ix++;
+		dim->steps_right++;
 		break;
-	case MLX5E_AM_GOING_LEFT:
-		if (am->profile_ix == 0)
-			return MLX5E_AM_ON_EDGE;
-		am->profile_ix--;
-		am->steps_left++;
+	case NET_DIM_GOING_LEFT:
+		if (dim->profile_ix == 0)
+			return NET_DIM_ON_EDGE;
+		dim->profile_ix--;
+		dim->steps_left++;
 		break;
 	}
 
-	am->tired++;
-	return MLX5E_AM_STEPPED;
+	dim->tired++;
+	return NET_DIM_STEPPED;
 }
 
-static void mlx5e_am_park_on_top(struct mlx5e_rx_am *am)
+static void net_dim_park_on_top(struct net_dim *dim)
 {
-	am->steps_right  = 0;
-	am->steps_left   = 0;
-	am->tired        = 0;
-	am->tune_state   = MLX5E_AM_PARKING_ON_TOP;
+	dim->steps_right  = 0;
+	dim->steps_left   = 0;
+	dim->tired        = 0;
+	dim->tune_state   = NET_DIM_PARKING_ON_TOP;
 }
 
-static void mlx5e_am_park_tired(struct mlx5e_rx_am *am)
+static void net_dim_park_tired(struct net_dim *dim)
 {
-	am->steps_right  = 0;
-	am->steps_left   = 0;
-	am->tune_state   = MLX5E_AM_PARKING_TIRED;
+	dim->steps_right  = 0;
+	dim->steps_left   = 0;
+	dim->tune_state   = NET_DIM_PARKING_TIRED;
 }
 
-static void mlx5e_am_exit_parking(struct mlx5e_rx_am *am)
+static void net_dim_exit_parking(struct net_dim *dim)
 {
-	am->tune_state = am->profile_ix ? MLX5E_AM_GOING_LEFT :
-					  MLX5E_AM_GOING_RIGHT;
-	mlx5e_am_step(am);
+	dim->tune_state = dim->profile_ix ? NET_DIM_GOING_LEFT :
+					  NET_DIM_GOING_RIGHT;
+	net_dim_step(dim);
 }
 
 #define IS_SIGNIFICANT_DIFF(val, ref) \
 	(((100 * abs((val) - (ref))) / (ref)) > 10) /* more than 10% difference */
 
-static int mlx5e_am_stats_compare(struct mlx5e_rx_am_stats *curr,
-				  struct mlx5e_rx_am_stats *prev)
+static int net_dim_stats_compare(struct net_dim_stats *curr,
+				 struct net_dim_stats *prev)
 {
 	if (!prev->bpms)
-		return curr->bpms ? MLX5E_AM_STATS_BETTER :
-				    MLX5E_AM_STATS_SAME;
+		return curr->bpms ? NET_DIM_STATS_BETTER :
+				    NET_DIM_STATS_SAME;
 
 	if (IS_SIGNIFICANT_DIFF(curr->bpms, prev->bpms))
-		return (curr->bpms > prev->bpms) ? MLX5E_AM_STATS_BETTER :
-						   MLX5E_AM_STATS_WORSE;
+		return (curr->bpms > prev->bpms) ? NET_DIM_STATS_BETTER :
+						   NET_DIM_STATS_WORSE;
 
 	if (IS_SIGNIFICANT_DIFF(curr->ppms, prev->ppms))
-		return (curr->ppms > prev->ppms) ? MLX5E_AM_STATS_BETTER :
-						   MLX5E_AM_STATS_WORSE;
+		return (curr->ppms > prev->ppms) ? NET_DIM_STATS_BETTER :
+						   NET_DIM_STATS_WORSE;
 
 	if (IS_SIGNIFICANT_DIFF(curr->epms, prev->epms))
-		return (curr->epms < prev->epms) ? MLX5E_AM_STATS_BETTER :
-						   MLX5E_AM_STATS_WORSE;
+		return (curr->epms < prev->epms) ? NET_DIM_STATS_BETTER :
+						   NET_DIM_STATS_WORSE;
 
-	return MLX5E_AM_STATS_SAME;
+	return NET_DIM_STATS_SAME;
 }
 
-static bool mlx5e_am_decision(struct mlx5e_rx_am_stats *curr_stats,
-			      struct mlx5e_rx_am *am)
+static bool net_dim_decision(struct net_dim_stats *curr_stats,
+			     struct net_dim *dim)
 {
-	int prev_state = am->tune_state;
-	int prev_ix = am->profile_ix;
+	int prev_state = dim->tune_state;
+	int prev_ix = dim->profile_ix;
 	int stats_res;
 	int step_res;
 
-	switch (am->tune_state) {
-	case MLX5E_AM_PARKING_ON_TOP:
-		stats_res = mlx5e_am_stats_compare(curr_stats, &am->prev_stats);
-		if (stats_res != MLX5E_AM_STATS_SAME)
-			mlx5e_am_exit_parking(am);
+	switch (dim->tune_state) {
+	case NET_DIM_PARKING_ON_TOP:
+		stats_res = net_dim_stats_compare(curr_stats, &dim->prev_stats);
+		if (stats_res != NET_DIM_STATS_SAME)
+			net_dim_exit_parking(dim);
 		break;
 
-	case MLX5E_AM_PARKING_TIRED:
-		am->tired--;
-		if (!am->tired)
-			mlx5e_am_exit_parking(am);
+	case NET_DIM_PARKING_TIRED:
+		dim->tired--;
+		if (!dim->tired)
+			net_dim_exit_parking(dim);
 		break;
 
-	case MLX5E_AM_GOING_RIGHT:
-	case MLX5E_AM_GOING_LEFT:
-		stats_res = mlx5e_am_stats_compare(curr_stats, &am->prev_stats);
-		if (stats_res != MLX5E_AM_STATS_BETTER)
-			mlx5e_am_turn(am);
+	case NET_DIM_GOING_RIGHT:
+	case NET_DIM_GOING_LEFT:
+		stats_res = net_dim_stats_compare(curr_stats, &dim->prev_stats);
+		if (stats_res != NET_DIM_STATS_BETTER)
+			net_dim_turn(dim);
 
-		if (mlx5e_am_on_top(am)) {
-			mlx5e_am_park_on_top(am);
+		if (net_dim_on_top(dim)) {
+			net_dim_park_on_top(dim);
 			break;
 		}
 
-		step_res = mlx5e_am_step(am);
+		step_res = net_dim_step(dim);
 		switch (step_res) {
-		case MLX5E_AM_ON_EDGE:
-			mlx5e_am_park_on_top(am);
+		case NET_DIM_ON_EDGE:
+			net_dim_park_on_top(dim);
 			break;
-		case MLX5E_AM_TOO_TIRED:
-			mlx5e_am_park_tired(am);
+		case NET_DIM_TOO_TIRED:
+			net_dim_park_tired(dim);
 			break;
 		}
 
 		break;
 	}
 
-	if ((prev_state     != MLX5E_AM_PARKING_ON_TOP) ||
-	    (am->tune_state != MLX5E_AM_PARKING_ON_TOP))
-		am->prev_stats = *curr_stats;
+	if ((prev_state      != NET_DIM_PARKING_ON_TOP) ||
+	    (dim->tune_state != NET_DIM_PARKING_ON_TOP))
+		dim->prev_stats = *curr_stats;
 
-	return am->profile_ix != prev_ix;
+	return dim->profile_ix != prev_ix;
 }
 
-static void mlx5e_am_sample(u16 event_ctr,
-			    u64 packets,
-			    u64 bytes,
-			    struct mlx5e_rx_am_sample *s)
+static void net_dim_sample(u16 event_ctr,
+			   u64 packets,
+			   u64 bytes,
+			   struct net_dim_sample *s)
 {
 	s->time	     = ktime_get();
 	s->pkt_ctr   = packets;
@@ -250,13 +250,13 @@ static void mlx5e_am_sample(u16 event_ctr,
 	s->event_ctr = event_ctr;
 }
 
-#define MLX5E_AM_NEVENTS 64
+#define NET_DIM_NEVENTS 64
 #define BITS_PER_TYPE(type) (sizeof(type) * BITS_PER_BYTE)
 #define BIT_GAP(bits, end, start) ((((end) - (start)) + BIT_ULL(bits)) & (BIT_ULL(bits) - 1))
 
-static void mlx5e_am_calc_stats(struct mlx5e_rx_am_sample *start,
-				struct mlx5e_rx_am_sample *end,
-				struct mlx5e_rx_am_stats *curr_stats)
+static void net_dim_calc_stats(struct net_dim_sample *start,
+			       struct net_dim_sample *end,
+			       struct net_dim_stats *curr_stats)
 {
 	/* u32 holds up to 71 minutes, should be enough */
 	u32 delta_us = ktime_us_delta(end->time, start->time);
@@ -269,39 +269,39 @@ static void mlx5e_am_calc_stats(struct mlx5e_rx_am_sample *start,
 
 	curr_stats->ppms = DIV_ROUND_UP(npkts * USEC_PER_MSEC, delta_us);
 	curr_stats->bpms = DIV_ROUND_UP(nbytes * USEC_PER_MSEC, delta_us);
-	curr_stats->epms = DIV_ROUND_UP(MLX5E_AM_NEVENTS * USEC_PER_MSEC,
+	curr_stats->epms = DIV_ROUND_UP(NET_DIM_NEVENTS * USEC_PER_MSEC,
 					delta_us);
 }
 
-void mlx5e_rx_am(struct mlx5e_rx_am *am,
-		 u16 event_ctr,
-		 u64 packets,
-		 u64 bytes)
+void net_dim(struct net_dim *dim,
+	     u16 event_ctr,
+	     u64 packets,
+	     u64 bytes)
 {
-	struct mlx5e_rx_am_sample end_sample;
-	struct mlx5e_rx_am_stats curr_stats;
+	struct net_dim_sample end_sample;
+	struct net_dim_stats curr_stats;
 	u16 nevents;
 
-	switch (am->state) {
-	case MLX5E_AM_MEASURE_IN_PROGRESS:
+	switch (dim->state) {
+	case NET_DIM_MEASURE_IN_PROGRESS:
 		nevents = BIT_GAP(BITS_PER_TYPE(u16), event_ctr,
-				  am->start_sample.event_ctr);
-		if (nevents < MLX5E_AM_NEVENTS)
+				  dim->start_sample.event_ctr);
+		if (nevents < NET_DIM_NEVENTS)
 			break;
-		mlx5e_am_sample(event_ctr, packets, bytes, &end_sample);
-		mlx5e_am_calc_stats(&am->start_sample, &end_sample,
-				    &curr_stats);
-		if (mlx5e_am_decision(&curr_stats, am)) {
-			am->state = MLX5E_AM_APPLY_NEW_PROFILE;
-			schedule_work(&am->work);
+		net_dim_sample(event_ctr, packets, bytes, &end_sample);
+		net_dim_calc_stats(&dim->start_sample, &end_sample,
+				   &curr_stats);
+		if (net_dim_decision(&curr_stats, dim)) {
+			dim->state = NET_DIM_APPLY_NEW_PROFILE;
+			schedule_work(&dim->work);
 			break;
 		}
 		/* fall through */
-	case MLX5E_AM_START_MEASURE:
-		mlx5e_am_sample(event_ctr, packets, bytes, &am->start_sample);
-		am->state = MLX5E_AM_MEASURE_IN_PROGRESS;
+	case NET_DIM_START_MEASURE:
+		net_dim_sample(event_ctr, packets, bytes, &dim->start_sample);
+		dim->state = NET_DIM_MEASURE_IN_PROGRESS;
 		break;
-	case MLX5E_AM_APPLY_NEW_PROFILE:
+	case NET_DIM_APPLY_NEW_PROFILE:
 		break;
 	}
 }

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

@@ -31,32 +31,32 @@
  * SOFTWARE.
  */
 
-#ifndef MLX5_AM_H
-#define MLX5_AM_H
+#ifndef NET_DIM_H
+#define NET_DIM_H
 
-struct mlx5e_cq_moder {
+struct net_dim_cq_moder {
 	u16 usec;
 	u16 pkts;
 	u8 cq_period_mode;
 };
 
-struct mlx5e_rx_am_sample {
+struct net_dim_sample {
 	ktime_t time;
 	u32     pkt_ctr;
 	u32     byte_ctr;
 	u16     event_ctr;
 };
 
-struct mlx5e_rx_am_stats {
+struct net_dim_stats {
 	int ppms; /* packets per msec */
 	int bpms; /* bytes per msec */
 	int epms; /* events per msec */
 };
 
-struct mlx5e_rx_am { /* Adaptive Moderation */
+struct net_dim { /* Adaptive Moderation */
 	u8                                      state;
-	struct mlx5e_rx_am_stats                prev_stats;
-	struct mlx5e_rx_am_sample               start_sample;
+	struct net_dim_stats                    prev_stats;
+	struct net_dim_sample                   start_sample;
 	struct work_struct                      work;
 	u8                                      profile_ix;
 	u8                                      mode;
@@ -66,38 +66,43 @@ struct mlx5e_rx_am { /* Adaptive Moderation */
 	u8                                      tired;
 };
 
+enum {
+	NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE = 0x0,
+	NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE = 0x1,
+	NET_DIM_CQ_PERIOD_NUM_MODES
+};
+
 /* Adaptive moderation logic */
 enum {
-	MLX5E_AM_START_MEASURE,
-	MLX5E_AM_MEASURE_IN_PROGRESS,
-	MLX5E_AM_APPLY_NEW_PROFILE,
+	NET_DIM_START_MEASURE,
+	NET_DIM_MEASURE_IN_PROGRESS,
+	NET_DIM_APPLY_NEW_PROFILE,
 };
 
 enum {
-	MLX5E_AM_PARKING_ON_TOP,
-	MLX5E_AM_PARKING_TIRED,
-	MLX5E_AM_GOING_RIGHT,
-	MLX5E_AM_GOING_LEFT,
+	NET_DIM_PARKING_ON_TOP,
+	NET_DIM_PARKING_TIRED,
+	NET_DIM_GOING_RIGHT,
+	NET_DIM_GOING_LEFT,
 };
 
 enum {
-	MLX5E_AM_STATS_WORSE,
-	MLX5E_AM_STATS_SAME,
-	MLX5E_AM_STATS_BETTER,
+	NET_DIM_STATS_WORSE,
+	NET_DIM_STATS_SAME,
+	NET_DIM_STATS_BETTER,
 };
 
 enum {
-	MLX5E_AM_STEPPED,
-	MLX5E_AM_TOO_TIRED,
-	MLX5E_AM_ON_EDGE,
+	NET_DIM_STEPPED,
+	NET_DIM_TOO_TIRED,
+	NET_DIM_ON_EDGE,
 };
 
-void mlx5e_rx_am(struct mlx5e_rx_am *am,
-		 u16 event_ctr,
-		 u64 packets,
-		 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);
+void net_dim(struct net_dim *dim,
+	     u16 event_ctr,
+	     u64 packets,
+	     u64 bytes);
+struct net_dim_cq_moder net_dim_get_def_profile(u8 rx_cq_period_mode);
+struct net_dim_cq_moder net_dim_get_profile(u8 cq_period_mode, int ix);
 
-#endif /* MLX5_AM_H */
+#endif /* NET_DIM_H */