1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright 2015 6WIND S.A.
3 * Copyright 2015 Mellanox.
13 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
15 #pragma GCC diagnostic ignored "-Wpedantic"
17 #include <infiniband/verbs.h>
19 #pragma GCC diagnostic error "-Wpedantic"
22 #include <rte_malloc.h>
23 #include <rte_ethdev_driver.h>
26 #include "mlx5_defs.h"
27 #include "mlx5_rxtx.h"
30 * DPDK callback to update the RSS hash configuration.
33 * Pointer to Ethernet device structure.
35 * RSS configuration data.
38 * 0 on success, a negative errno value otherwise and rte_errno is set.
41 mlx5_rss_hash_update(struct rte_eth_dev *dev,
42 struct rte_eth_rss_conf *rss_conf)
44 struct priv *priv = dev->data->dev_private;
46 if (rss_conf->rss_hf & MLX5_RSS_HF_MASK) {
50 if (rss_conf->rss_key && rss_conf->rss_key_len) {
51 priv->rss_conf.rss_key = rte_realloc(priv->rss_conf.rss_key,
52 rss_conf->rss_key_len, 0);
53 if (!priv->rss_conf.rss_key) {
57 memcpy(priv->rss_conf.rss_key, rss_conf->rss_key,
58 rss_conf->rss_key_len);
59 priv->rss_conf.rss_key_len = rss_conf->rss_key_len;
61 priv->rss_conf.rss_hf = rss_conf->rss_hf;
66 * DPDK callback to get the RSS hash configuration.
69 * Pointer to Ethernet device structure.
70 * @param[in, out] rss_conf
71 * RSS configuration data.
74 * 0 on success, a negative errno value otherwise and rte_errno is set.
77 mlx5_rss_hash_conf_get(struct rte_eth_dev *dev,
78 struct rte_eth_rss_conf *rss_conf)
80 struct priv *priv = dev->data->dev_private;
86 if (rss_conf->rss_key &&
87 (rss_conf->rss_key_len >= priv->rss_conf.rss_key_len)) {
88 memcpy(rss_conf->rss_key, priv->rss_conf.rss_key,
89 priv->rss_conf.rss_key_len);
91 rss_conf->rss_key_len = priv->rss_conf.rss_key_len;
92 rss_conf->rss_hf = priv->rss_conf.rss_hf;
97 * Allocate/reallocate RETA index table.
100 * Pointer to Ethernet device.
102 * The size of the array to allocate.
105 * 0 on success, a negative errno value otherwise and rte_errno is set.
108 mlx5_rss_reta_index_resize(struct rte_eth_dev *dev, unsigned int reta_size)
110 struct priv *priv = dev->data->dev_private;
112 unsigned int old_size = priv->reta_idx_n;
114 if (priv->reta_idx_n == reta_size)
117 mem = rte_realloc(priv->reta_idx,
118 reta_size * sizeof((*priv->reta_idx)[0]), 0);
123 priv->reta_idx = mem;
124 priv->reta_idx_n = reta_size;
125 if (old_size < reta_size)
126 memset(&(*priv->reta_idx)[old_size], 0,
127 (reta_size - old_size) *
128 sizeof((*priv->reta_idx)[0]));
133 * DPDK callback to get the RETA indirection table.
136 * Pointer to Ethernet device structure.
138 * Pointer to RETA configuration structure array.
140 * Size of the RETA table.
143 * 0 on success, a negative errno value otherwise and rte_errno is set.
146 mlx5_dev_rss_reta_query(struct rte_eth_dev *dev,
147 struct rte_eth_rss_reta_entry64 *reta_conf,
150 struct priv *priv = dev->data->dev_private;
154 if (!reta_size || reta_size > priv->reta_idx_n) {
158 /* Fill each entry of the table even if its bit is not set. */
159 for (idx = 0, i = 0; (i != reta_size); ++i) {
160 idx = i / RTE_RETA_GROUP_SIZE;
161 reta_conf[idx].reta[i % RTE_RETA_GROUP_SIZE] =
162 (*priv->reta_idx)[i];
168 * DPDK callback to update the RETA indirection table.
171 * Pointer to Ethernet device structure.
173 * Pointer to RETA configuration structure array.
175 * Size of the RETA table.
178 * 0 on success, a negative errno value otherwise and rte_errno is set.
181 mlx5_dev_rss_reta_update(struct rte_eth_dev *dev,
182 struct rte_eth_rss_reta_entry64 *reta_conf,
186 struct priv *priv = dev->data->dev_private;
195 ret = mlx5_rss_reta_index_resize(dev, reta_size);
198 for (idx = 0, i = 0; (i != reta_size); ++i) {
199 idx = i / RTE_RETA_GROUP_SIZE;
200 pos = i % RTE_RETA_GROUP_SIZE;
201 if (((reta_conf[idx].mask >> i) & 0x1) == 0)
203 assert(reta_conf[idx].reta[pos] < priv->rxqs_n);
204 (*priv->reta_idx)[i] = reta_conf[idx].reta[pos];
206 if (dev->data->dev_started) {
208 return mlx5_dev_start(dev);