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Message-ID: <d35d8142-36ec-ec71-bde9-0ad258a6a56c@mellanox.com>
Date: Fri, 5 Jan 2018 10:04:50 +0200
From: Tal Gilboa <talgi@...lanox.com>
To: Andy Gospodarek <andy@...yhouse.net>, netdev@...r.kernel.org
Cc: mchan@...adcom.com, ogerlitz@...lanox.com,
Andy Gospodarek <gospo@...adcom.com>
Subject: Re: [net-next 06/10] net/mlx5e: change Mellanox references in DIM
code
On 1/4/2018 10:21 PM, Andy Gospodarek wrote:
> From: Andy Gospodarek <gospo@...adcom.com>
>
> Change all mlx5_am* and MLX_AM* references to net_dim and NET_DIM,
MLX_AM->MLX5_AM
> cq_period_mode = enable ?
> - MLX5_CQ_PERIOD_MODE_START_FROM_CQE :
> - MLX5_CQ_PERIOD_MODE_START_FROM_EQE;
> + NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE :
> + NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE;
I'm not sure about this part. CQE/EQE based moderation is a feature in
Mellanox's chips, which isn't necessarily coupled with adaptive
moderation. net_dim lib should know which values to choose according to
the selected mode, but I don't think mlx5 driver should use an enum from
net_dim for enabling/disabling HW features. Another issue is that we use
the enum value as an argument for the command to HW (0=EQE, 1=CQE). If
someone would change the values it would break the HW feature. I think
it would be safer to use the NET_DIM_XXX enum only when using functions
from net_dim lib.
> current_cq_period_mode = is_rx_cq ?
> priv->channels.params.rx_cq_moderation.cq_period_mode :
> priv->channels.params.tx_cq_moderation.cq_period_mode;
> mode_changed = cq_period_mode != current_cq_period_mode;
>
> - if (cq_period_mode == MLX5_CQ_PERIOD_MODE_START_FROM_CQE &&
> + if (cq_period_mode == NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE &&
> !MLX5_CAP_GEN(mdev, cq_period_start_from_cqe))
> return -EOPNOTSUPP;
>
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
> index 3aa1c90..edd4077 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
> @@ -674,8 +674,8 @@ 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);
> + rq->dim.mode = params->rx_cq_moderation.cq_period_mode;
> rq->page_cache.head = 0;
> rq->page_cache.tail = 0;
>
> @@ -919,7 +919,7 @@ 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;
> @@ -952,7 +952,7 @@ 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);
> @@ -1565,7 +1565,7 @@ 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)
> {
> @@ -1747,7 +1747,7 @@ 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;
> @@ -1999,7 +1999,7 @@ 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,
> @@ -4016,13 +4016,13 @@ void mlx5e_set_tx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode)
> params->tx_cq_moderation.usec =
> MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC;
>
> - if (cq_period_mode == MLX5_CQ_PERIOD_MODE_START_FROM_CQE)
> + if (cq_period_mode == NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE)
> params->tx_cq_moderation.usec =
> MLX5E_PARAMS_DEFAULT_TX_CQ_MODERATION_USEC_FROM_CQE;
>
> MLX5E_SET_PFLAG(params, MLX5E_PFLAG_TX_CQE_BASED_MODER,
> params->tx_cq_moderation.cq_period_mode ==
> - MLX5_CQ_PERIOD_MODE_START_FROM_CQE);
> + NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE);
> }
>
> void mlx5e_set_rx_cq_mode_params(struct mlx5e_params *params, u8 cq_period_mode)
> @@ -4034,17 +4034,17 @@ 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;
>
> - if (cq_period_mode == MLX5_CQ_PERIOD_MODE_START_FROM_CQE)
> + if (cq_period_mode == NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE)
> params->rx_cq_moderation.usec =
> MLX5E_PARAMS_DEFAULT_RX_CQ_MODERATION_USEC_FROM_CQE;
>
> - if (params->rx_am_enabled)
> + if (params->rx_dim_enabled)
> params->rx_cq_moderation =
> - mlx5e_am_get_def_profile(cq_period_mode);
> + net_dim_get_def_profile(cq_period_mode);
>
> MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_CQE_BASED_MODER,
> params->rx_cq_moderation.cq_period_mode ==
> - MLX5_CQ_PERIOD_MODE_START_FROM_CQE);
> + NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE);
> }
>
> u32 mlx5e_choose_lro_timeout(struct mlx5_core_dev *mdev, u32 wanted_timeout)
> @@ -4100,9 +4100,9 @@ void mlx5e_build_nic_params(struct mlx5_core_dev *mdev,
>
> /* CQ moderation params */
> 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);
> + NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE :
> + NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE;
> + 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);
>
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
> index c6a77f8..ccb038f 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
> @@ -877,8 +877,8 @@ static void mlx5e_build_rep_params(struct mlx5_core_dev *mdev,
> struct mlx5e_params *params)
> {
> u8 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;
> + NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE :
> + NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE;
>
> params->log_sq_size = MLX5E_PARAMS_MINIMUM_LOG_SQ_SIZE;
> params->rq_wq_type = MLX5_WQ_TYPE_LINKED_LIST;
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
> index 1849169..dae77a9 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
> @@ -79,7 +79,7 @@ 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,
> + net_dim(&c->rq.dim,
> c->rq.cq.event_ctr,
> c->rq.stats.packets,
> c->rq.stats.bytes);
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/net_dim.c b/drivers/net/ethernet/mellanox/mlx5/core/net_dim.c
> index ca05f4e..00b9ae3 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/net_dim.c
> +++ b/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,
> + net_dim_sample(event_ctr, packets, bytes, &end_sample);
> + net_dim_calc_stats(&dim->start_sample, &end_sample,
> &curr_stats);
> - if (mlx5e_am_decision(&curr_stats, am)) {
> - am->state = MLX5E_AM_APPLY_NEW_PROFILE;
> - schedule_work(&am->work);
> + 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;
> }
> }
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/net_dim.h b/drivers/net/ethernet/mellanox/mlx5/core/net_dim.h
> index 5ce8e54..a775c12 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/net_dim.h
> +++ b/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;
> @@ -67,43 +67,42 @@ struct mlx5e_rx_am { /* Adaptive Moderation */
> };
>
> enum {
> - MLX5_CQ_PERIOD_MODE_START_FROM_EQE = 0x0,
> - MLX5_CQ_PERIOD_MODE_START_FROM_CQE = 0x1,
> - MLX5_CQ_PERIOD_NUM_MODES
> + 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 */
>
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