cregit-Linux how code gets into the kernel

Release 4.11 drivers/net/ethernet/mellanox/mlx4/en_cq.c

/*
 * Copyright (c) 2007 Mellanox Technologies. All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */

#include <linux/mlx4/cq.h>
#include <linux/mlx4/qp.h>
#include <linux/mlx4/cmd.h>

#include "mlx4_en.h"


static void mlx4_en_cq_event(struct mlx4_cq *cq, enum mlx4_event event) { return; }

Contributors

PersonTokensPropCommitsCommitProp
Yevgeny Petrilin16100.00%1100.00%
Total16100.00%1100.00%


int mlx4_en_create_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq **pcq, int entries, int ring, enum cq_type mode, int node) { struct mlx4_en_dev *mdev = priv->mdev; struct mlx4_en_cq *cq; int err; cq = kzalloc_node(sizeof(*cq), GFP_KERNEL, node); if (!cq) { cq = kzalloc(sizeof(*cq), GFP_KERNEL); if (!cq) { en_err(priv, "Failed to allocate CQ structure\n"); return -ENOMEM; } } cq->size = entries; cq->buf_size = cq->size * mdev->dev->caps.cqe_size; cq->ring = ring; cq->type = mode; cq->vector = mdev->dev->caps.num_comp_vectors; /* Allocate HW buffers on provided NUMA node. * dev->numa_node is used in mtt range allocation flow. */ set_dev_node(&mdev->dev->persist->pdev->dev, node); err = mlx4_alloc_hwq_res(mdev->dev, &cq->wqres, cq->buf_size); set_dev_node(&mdev->dev->persist->pdev->dev, mdev->dev->numa_node); if (err) goto err_cq; cq->buf = (struct mlx4_cqe *)cq->wqres.buf.direct.buf; *pcq = cq; return 0; err_cq: kfree(cq); *pcq = NULL; return err; }

Contributors

PersonTokensPropCommitsCommitProp
Eugenia Emantayev11947.79%225.00%
Yevgeny Petrilin10642.57%225.00%
Matan Barak124.82%112.50%
Or Gerlitz72.81%112.50%
Yishai Hadas41.61%112.50%
Tariq Toukan10.40%112.50%
Total249100.00%8100.00%


int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq, int cq_idx) { struct mlx4_en_dev *mdev = priv->mdev; int err = 0; int timestamp_en = 0; bool assigned_eq = false; cq->dev = mdev->pndev[priv->port]; cq->mcq.set_ci_db = cq->wqres.db.db; cq->mcq.arm_db = cq->wqres.db.db + 1; *cq->mcq.set_ci_db = 0; *cq->mcq.arm_db = 0; memset(cq->buf, 0, cq->buf_size); if (cq->type == RX) { if (!mlx4_is_eq_vector_valid(mdev->dev, priv->port, cq->vector)) { cq->vector = cpumask_first(priv->rx_ring[cq->ring]->affinity_mask); err = mlx4_assign_eq(mdev->dev, priv->port, &cq->vector); if (err) { mlx4_err(mdev, "Failed assigning an EQ to CQ vector %d\n", cq->vector); goto free_eq; } assigned_eq = true; } cq->irq_desc = irq_to_desc(mlx4_eq_get_irq(mdev->dev, cq->vector)); } else { /* For TX we use the same irq per ring we assigned for the RX */ struct mlx4_en_cq *rx_cq; cq_idx = cq_idx % priv->rx_ring_num; rx_cq = priv->rx_cq[cq_idx]; cq->vector = rx_cq->vector; } if (cq->type == RX) cq->size = priv->rx_ring[cq->ring]->actual_size; if ((cq->type != RX && priv->hwtstamp_config.tx_type) || (cq->type == RX && priv->hwtstamp_config.rx_filter)) timestamp_en = 1; err = mlx4_cq_alloc(mdev->dev, cq->size, &cq->wqres.mtt, &mdev->priv_uar, cq->wqres.db.dma, &cq->mcq, cq->vector, 0, timestamp_en); if (err) goto free_eq; cq->mcq.comp = cq->type != RX ? mlx4_en_tx_irq : mlx4_en_rx_irq; cq->mcq.event = mlx4_en_cq_event; if (cq->type != RX) netif_tx_napi_add(cq->dev, &cq->napi, mlx4_en_poll_tx_cq, NAPI_POLL_WEIGHT); else netif_napi_add(cq->dev, &cq->napi, mlx4_en_poll_rx_cq, 64); napi_enable(&cq->napi); return 0; free_eq: if (assigned_eq) mlx4_release_eq(mdev->dev, cq->vector); cq->vector = mdev->dev->caps.num_comp_vectors; return err; }

Contributors

PersonTokensPropCommitsCommitProp
Yevgeny Petrilin27858.40%529.41%
Matan Barak6313.24%15.88%
Amir Vadai5611.76%423.53%
Alexander Guller275.67%15.88%
Eugenia Emantayev183.78%211.76%
Tariq Toukan163.36%15.88%
Ido Shamay132.73%15.88%
Carol L Soto40.84%15.88%
Eric Dumazet10.21%15.88%
Total476100.00%17100.00%


void mlx4_en_destroy_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq **pcq) { struct mlx4_en_dev *mdev = priv->mdev; struct mlx4_en_cq *cq = *pcq; mlx4_free_hwq_res(mdev->dev, &cq->wqres, cq->buf_size); if (mlx4_is_eq_vector_valid(mdev->dev, priv->port, cq->vector) && cq->type == RX) mlx4_release_eq(priv->mdev->dev, cq->vector); cq->vector = 0; cq->buf_size = 0; cq->buf = NULL; kfree(cq); *pcq = NULL; }

Contributors

PersonTokensPropCommitsCommitProp
Yevgeny Petrilin8070.80%350.00%
Eugenia Emantayev2017.70%116.67%
Matan Barak1210.62%116.67%
Tariq Toukan10.88%116.67%
Total113100.00%6100.00%


void mlx4_en_deactivate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) { napi_disable(&cq->napi); netif_napi_del(&cq->napi); mlx4_cq_free(priv->mdev->dev, &cq->mcq); }

Contributors

PersonTokensPropCommitsCommitProp
Yevgeny Petrilin45100.00%3100.00%
Total45100.00%3100.00%

/* Set rx cq moderation parameters */
int mlx4_en_set_cq_moder(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) { return mlx4_cq_modify(priv->mdev->dev, &cq->mcq, cq->moder_cnt, cq->moder_time); }

Contributors

PersonTokensPropCommitsCommitProp
Yevgeny Petrilin38100.00%1100.00%
Total38100.00%1100.00%


int mlx4_en_arm_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq) { mlx4_cq_arm(&cq->mcq, MLX4_CQ_DB_REQ_NOT, priv->mdev->uar_map, &priv->mdev->uar_lock); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Yevgeny Petrilin41100.00%1100.00%
Total41100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Yevgeny Petrilin61862.30%937.50%
Eugenia Emantayev15715.83%312.50%
Matan Barak878.77%14.17%
Amir Vadai565.65%416.67%
Alexander Guller272.72%14.17%
Tariq Toukan181.81%14.17%
Ido Shamay131.31%14.17%
Or Gerlitz70.71%14.17%
Carol L Soto40.40%14.17%
Yishai Hadas40.40%14.17%
Eric Dumazet10.10%14.17%
Total992100.00%24100.00%
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