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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: 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>
This commit is contained in:
Andy Gospodarek 2018-01-09 16:06:17 -05:00 committed by David S. Miller
parent b9c872f231
commit 9a31742531
8 changed files with 225 additions and 201 deletions
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9
drivers/net/ethernet/mellanox/mlx5/core/en.h
View File

@ -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__ */

14
drivers/net/ethernet/mellanox/mlx5/core/en_dim.c
View File

@ -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;
}

6
drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
View File

@ -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;

40
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -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);

2
drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
View File

@ -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);

8
drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
View File

@ -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);

284
drivers/net/ethernet/mellanox/mlx5/core/net_dim.c
View File

@ -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
#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 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}, \
/* 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;
}
}

63
drivers/net/ethernet/mellanox/mlx5/core/net_dim.h
View File

@ -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 */