6cc096bffa
Add support for DIM based on Linux, with some minor adaptions specific to FreeBSD. Linux commit f97c3dc3c0e8d23a5c4357d182afeef4c67f5c33 MFC after: 3 days Sponsored by: Mellanox Technologies
93 lines
3.0 KiB
C
93 lines
3.0 KiB
C
/*-
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* Copyright (c) 2018 Mellanox Technologies. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "en.h"
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void
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mlx5e_dim_build_cq_param(struct mlx5e_priv *priv,
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struct mlx5e_cq_param *param)
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{
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struct net_dim_cq_moder prof;
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void *cqc = param->cqc;
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if (priv->params.rx_cq_moderation_mode < 2)
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return;
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switch (MLX5_GET(cqc, cqc, cq_period_mode)) {
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case MLX5_CQ_PERIOD_MODE_START_FROM_CQE:
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prof = net_dim_profile[NET_DIM_CQ_PERIOD_MODE_START_FROM_CQE]
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[NET_DIM_DEF_PROFILE_CQE];
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MLX5_SET(cqc, cqc, cq_period, prof.usec);
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MLX5_SET(cqc, cqc, cq_max_count, prof.pkts);
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break;
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case MLX5_CQ_PERIOD_MODE_START_FROM_EQE:
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prof = net_dim_profile[NET_DIM_CQ_PERIOD_MODE_START_FROM_EQE]
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[NET_DIM_DEF_PROFILE_EQE];
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MLX5_SET(cqc, cqc, cq_period, prof.usec);
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MLX5_SET(cqc, cqc, cq_max_count, prof.pkts);
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break;
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default:
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break;
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}
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}
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void
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mlx5e_dim_work(struct work_struct *work)
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{
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struct net_dim *dim = container_of(work, struct net_dim, work);
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struct mlx5e_rq *rq = container_of(dim, struct mlx5e_rq, dim);
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struct mlx5e_channel *c = container_of(rq, struct mlx5e_channel, rq);
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struct net_dim_cq_moder cur_profile;
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u8 profile_ix;
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u8 mode;
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/* copy current auto moderation settings and set new state */
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mtx_lock(&rq->mtx);
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profile_ix = dim->profile_ix;
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mode = dim->mode;
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dim->state = NET_DIM_START_MEASURE;
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mtx_unlock(&rq->mtx);
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/* check for invalid mode */
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if (mode == 255)
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return;
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/* get current profile */
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cur_profile = net_dim_profile[mode][profile_ix];
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/* apply LRO restrictions */
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if (c->priv->params.hw_lro_en &&
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cur_profile.pkts > MLX5E_DIM_MAX_RX_CQ_MODERATION_PKTS_WITH_LRO) {
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cur_profile.pkts = MLX5E_DIM_MAX_RX_CQ_MODERATION_PKTS_WITH_LRO;
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}
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/* modify CQ */
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mlx5_core_modify_cq_moderation(c->priv->mdev, &rq->cq.mcq,
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cur_profile.usec, cur_profile.pkts);
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}
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