2 * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
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8 * OpenIB.org BSD license below:
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11 * without modification, are permitted provided that the following
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15 * copyright notice, this list of conditions and the following
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23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
37 mlx5e_complete_dim_work(struct dim *dim, struct dim_cq_moder moder,
38 struct mlx5_core_dev *mdev, struct mlx5_core_cq *mcq)
40 mlx5e_modify_cq_moderation(mdev, mcq, moder.usec, moder.pkts,
41 mlx5e_cq_period_mode(moder.cq_period_mode));
42 dim->state = DIM_START_MEASURE;
45 void mlx5e_rx_dim_work(struct work_struct *work)
47 struct dim *dim = container_of(work, struct dim, work);
48 struct mlx5e_rq *rq = dim->priv;
49 struct dim_cq_moder cur_moder =
50 net_dim_get_rx_moderation(dim->mode, dim->profile_ix);
52 mlx5e_complete_dim_work(dim, cur_moder, rq->mdev, &rq->cq.mcq);
55 void mlx5e_tx_dim_work(struct work_struct *work)
57 struct dim *dim = container_of(work, struct dim, work);
58 struct mlx5e_txqsq *sq = dim->priv;
59 struct dim_cq_moder cur_moder =
60 net_dim_get_tx_moderation(dim->mode, dim->profile_ix);
62 mlx5e_complete_dim_work(dim, cur_moder, sq->cq.mdev, &sq->cq.mcq);
65 static struct dim *mlx5e_dim_enable(struct mlx5_core_dev *mdev,
66 void (*work_fun)(struct work_struct *), int cpu,
67 u8 cq_period_mode, struct mlx5_core_cq *mcq,
73 dim = kvzalloc_node(sizeof(*dim), GFP_KERNEL, cpu_to_node(cpu));
75 return ERR_PTR(-ENOMEM);
77 INIT_WORK(&dim->work, work_fun);
79 dim->mode = cq_period_mode;
82 err = mlx5e_modify_cq_period_mode(mdev, mcq, dim->mode);
91 static void mlx5e_dim_disable(struct dim *dim)
93 cancel_work_sync(&dim->work);
97 int mlx5e_dim_rx_change(struct mlx5e_rq *rq, bool enable)
99 if (enable == !!rq->dim)
103 struct mlx5e_channel *c = rq->channel;
106 dim = mlx5e_dim_enable(rq->mdev, mlx5e_rx_dim_work, c->cpu,
107 c->rx_cq_moder.cq_period_mode, &rq->cq.mcq, rq);
113 __set_bit(MLX5E_RQ_STATE_DIM, &rq->state);
115 __clear_bit(MLX5E_RQ_STATE_DIM, &rq->state);
117 mlx5e_dim_disable(rq->dim);
124 int mlx5e_dim_tx_change(struct mlx5e_txqsq *sq, bool enable)
126 if (enable == !!sq->dim)
130 struct mlx5e_channel *c = sq->channel;
133 dim = mlx5e_dim_enable(sq->mdev, mlx5e_tx_dim_work, c->cpu,
134 c->tx_cq_moder.cq_period_mode, &sq->cq.mcq, sq);
140 __set_bit(MLX5E_SQ_STATE_DIM, &sq->state);
142 __clear_bit(MLX5E_SQ_STATE_DIM, &sq->state);
144 mlx5e_dim_disable(sq->dim);