mirror of https://github.com/F-Stack/f-stack.git
291 lines
7.3 KiB
C
291 lines
7.3 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright 2015 6WIND S.A.
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* Copyright 2015 Mellanox.
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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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*
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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of 6WIND S.A. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stddef.h>
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#include <stdint.h>
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#include <errno.h>
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#include <string.h>
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#include <assert.h>
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/* Verbs header. */
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/* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
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#ifdef PEDANTIC
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#pragma GCC diagnostic ignored "-Wpedantic"
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#endif
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#include <infiniband/verbs.h>
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#ifdef PEDANTIC
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#pragma GCC diagnostic error "-Wpedantic"
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#endif
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#include <rte_malloc.h>
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#include <rte_ethdev.h>
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#include "mlx5.h"
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#include "mlx5_defs.h"
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#include "mlx5_rxtx.h"
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/**
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* DPDK callback to update the RSS hash configuration.
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*
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* @param dev
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* Pointer to Ethernet device structure.
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* @param[in] rss_conf
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* RSS configuration data.
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*
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* @return
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* 0 on success, negative errno value on failure.
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*/
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int
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mlx5_rss_hash_update(struct rte_eth_dev *dev,
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struct rte_eth_rss_conf *rss_conf)
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{
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struct priv *priv = dev->data->dev_private;
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int ret = 0;
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priv_lock(priv);
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if (rss_conf->rss_hf & MLX5_RSS_HF_MASK) {
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ret = -EINVAL;
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goto out;
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}
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if (rss_conf->rss_key && rss_conf->rss_key_len) {
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priv->rss_conf.rss_key = rte_realloc(priv->rss_conf.rss_key,
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rss_conf->rss_key_len, 0);
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if (!priv->rss_conf.rss_key) {
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ret = -ENOMEM;
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goto out;
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}
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memcpy(priv->rss_conf.rss_key, rss_conf->rss_key,
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rss_conf->rss_key_len);
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priv->rss_conf.rss_key_len = rss_conf->rss_key_len;
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}
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priv->rss_conf.rss_hf = rss_conf->rss_hf;
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out:
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priv_unlock(priv);
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return ret;
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}
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/**
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* DPDK callback to get the RSS hash configuration.
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*
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* @param dev
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* Pointer to Ethernet device structure.
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* @param[in, out] rss_conf
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* RSS configuration data.
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*
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* @return
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* 0 on success, negative errno value on failure.
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*/
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int
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mlx5_rss_hash_conf_get(struct rte_eth_dev *dev,
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struct rte_eth_rss_conf *rss_conf)
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{
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struct priv *priv = dev->data->dev_private;
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if (!rss_conf)
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return -EINVAL;
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priv_lock(priv);
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if (rss_conf->rss_key &&
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(rss_conf->rss_key_len >= priv->rss_conf.rss_key_len)) {
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memcpy(rss_conf->rss_key, priv->rss_conf.rss_key,
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priv->rss_conf.rss_key_len);
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}
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rss_conf->rss_key_len = priv->rss_conf.rss_key_len;
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rss_conf->rss_hf = priv->rss_conf.rss_hf;
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priv_unlock(priv);
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return 0;
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}
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/**
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* Allocate/reallocate RETA index table.
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*
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* @param priv
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* Pointer to private structure.
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* @praram reta_size
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* The size of the array to allocate.
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*
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* @return
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* 0 on success, errno value on failure.
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*/
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int
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priv_rss_reta_index_resize(struct priv *priv, unsigned int reta_size)
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{
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void *mem;
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unsigned int old_size = priv->reta_idx_n;
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if (priv->reta_idx_n == reta_size)
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return 0;
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mem = rte_realloc(priv->reta_idx,
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reta_size * sizeof((*priv->reta_idx)[0]), 0);
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if (!mem)
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return ENOMEM;
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priv->reta_idx = mem;
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priv->reta_idx_n = reta_size;
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if (old_size < reta_size)
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memset(&(*priv->reta_idx)[old_size], 0,
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(reta_size - old_size) *
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sizeof((*priv->reta_idx)[0]));
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return 0;
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}
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/**
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* Query RETA table.
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*
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* @param priv
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* Pointer to private structure.
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* @param[in, out] reta_conf
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* Pointer to the first RETA configuration structure.
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* @param reta_size
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* Number of entries.
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*
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* @return
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* 0 on success, errno value on failure.
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*/
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static int
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priv_dev_rss_reta_query(struct priv *priv,
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struct rte_eth_rss_reta_entry64 *reta_conf,
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unsigned int reta_size)
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{
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unsigned int idx;
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unsigned int i;
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if (!reta_size || reta_size > priv->reta_idx_n)
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return EINVAL;
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/* Fill each entry of the table even if its bit is not set. */
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for (idx = 0, i = 0; (i != reta_size); ++i) {
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idx = i / RTE_RETA_GROUP_SIZE;
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reta_conf[idx].reta[i % RTE_RETA_GROUP_SIZE] =
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(*priv->reta_idx)[i];
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}
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return 0;
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}
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/**
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* Update RETA table.
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*
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* @param priv
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* Pointer to private structure.
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* @param[in] reta_conf
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* Pointer to the first RETA configuration structure.
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* @param reta_size
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* Number of entries.
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*
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* @return
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* 0 on success, errno value on failure.
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*/
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static int
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priv_dev_rss_reta_update(struct priv *priv,
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struct rte_eth_rss_reta_entry64 *reta_conf,
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unsigned int reta_size)
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{
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unsigned int idx;
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unsigned int i;
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unsigned int pos;
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int ret;
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if (!reta_size)
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return EINVAL;
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ret = priv_rss_reta_index_resize(priv, reta_size);
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if (ret)
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return ret;
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for (idx = 0, i = 0; (i != reta_size); ++i) {
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idx = i / RTE_RETA_GROUP_SIZE;
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pos = i % RTE_RETA_GROUP_SIZE;
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if (((reta_conf[idx].mask >> i) & 0x1) == 0)
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continue;
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assert(reta_conf[idx].reta[pos] < priv->rxqs_n);
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(*priv->reta_idx)[i] = reta_conf[idx].reta[pos];
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}
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return 0;
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}
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/**
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* DPDK callback to get the RETA indirection table.
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*
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* @param dev
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* Pointer to Ethernet device structure.
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* @param reta_conf
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* Pointer to RETA configuration structure array.
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* @param reta_size
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* Size of the RETA table.
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*
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* @return
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* 0 on success, negative errno value on failure.
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*/
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int
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mlx5_dev_rss_reta_query(struct rte_eth_dev *dev,
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struct rte_eth_rss_reta_entry64 *reta_conf,
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uint16_t reta_size)
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{
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int ret;
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struct priv *priv = dev->data->dev_private;
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priv_lock(priv);
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ret = priv_dev_rss_reta_query(priv, reta_conf, reta_size);
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priv_unlock(priv);
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return -ret;
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}
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/**
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* DPDK callback to update the RETA indirection table.
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*
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* @param dev
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* Pointer to Ethernet device structure.
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* @param reta_conf
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* Pointer to RETA configuration structure array.
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* @param reta_size
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* Size of the RETA table.
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*
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* @return
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* 0 on success, negative errno value on failure.
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*/
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int
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mlx5_dev_rss_reta_update(struct rte_eth_dev *dev,
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struct rte_eth_rss_reta_entry64 *reta_conf,
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uint16_t reta_size)
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{
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int ret;
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struct priv *priv = dev->data->dev_private;
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priv_lock(priv);
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ret = priv_dev_rss_reta_update(priv, reta_conf, reta_size);
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priv_unlock(priv);
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if (dev->data->dev_started) {
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mlx5_dev_stop(dev);
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mlx5_dev_start(dev);
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}
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return -ret;
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}
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