4 * Copyright 2015 6WIND S.A.
5 * Copyright 2015 Mellanox.
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41 /* ISO C doesn't support unnamed structs/unions, disabling -pedantic. */
43 #pragma GCC diagnostic ignored "-pedantic"
45 #include <infiniband/verbs.h>
47 #pragma GCC diagnostic error "-pedantic"
50 /* DPDK headers don't like -pedantic. */
52 #pragma GCC diagnostic ignored "-pedantic"
54 #include <rte_malloc.h>
55 #include <rte_ethdev.h>
57 #pragma GCC diagnostic error "-pedantic"
61 #include "mlx5_rxtx.h"
64 * Get a RSS configuration hash key.
67 * Pointer to private structure.
69 * RSS hash functions configuration must be retrieved for.
72 * Pointer to a RSS configuration structure or NULL if rss_hf cannot
75 static struct rte_eth_rss_conf *
76 rss_hash_get(struct priv *priv, uint64_t rss_hf)
80 for (i = 0; (i != hash_rxq_init_n); ++i) {
81 uint64_t dpdk_rss_hf = hash_rxq_init[i].dpdk_rss_hf;
83 if (!(dpdk_rss_hf & rss_hf))
85 return (*priv->rss_conf)[i];
94 * Pointer to private structure.
96 * Hash key to register.
98 * Hash key length in bytes.
100 * RSS hash functions the provided key applies to.
103 * 0 on success, errno value on failure.
106 rss_hash_rss_conf_new_key(struct priv *priv, const uint8_t *key,
107 unsigned int key_len, uint64_t rss_hf)
111 for (i = 0; (i != hash_rxq_init_n); ++i) {
112 struct rte_eth_rss_conf *rss_conf;
113 uint64_t dpdk_rss_hf = hash_rxq_init[i].dpdk_rss_hf;
115 if (!(dpdk_rss_hf & rss_hf))
117 rss_conf = rte_realloc((*priv->rss_conf)[i],
118 (sizeof(*rss_conf) + key_len),
122 rss_conf->rss_key = (void *)(rss_conf + 1);
123 rss_conf->rss_key_len = key_len;
124 rss_conf->rss_hf = dpdk_rss_hf;
125 memcpy(rss_conf->rss_key, key, key_len);
126 (*priv->rss_conf)[i] = rss_conf;
132 * DPDK callback to update the RSS hash configuration.
135 * Pointer to Ethernet device structure.
136 * @param[in] rss_conf
137 * RSS configuration data.
140 * 0 on success, negative errno value on failure.
143 mlx5_rss_hash_update(struct rte_eth_dev *dev,
144 struct rte_eth_rss_conf *rss_conf)
146 struct priv *priv = dev->data->dev_private;
151 assert(priv->rss_conf != NULL);
153 /* Apply configuration. */
154 if (rss_conf->rss_key)
155 err = rss_hash_rss_conf_new_key(priv,
157 rss_conf->rss_key_len,
160 err = rss_hash_rss_conf_new_key(priv,
161 rss_hash_default_key,
162 rss_hash_default_key_len,
165 /* Store protocols for which RSS is enabled. */
166 priv->rss_hf = rss_conf->rss_hf;
173 * DPDK callback to get the RSS hash configuration.
176 * Pointer to Ethernet device structure.
177 * @param[in, out] rss_conf
178 * RSS configuration data.
181 * 0 on success, negative errno value on failure.
184 mlx5_rss_hash_conf_get(struct rte_eth_dev *dev,
185 struct rte_eth_rss_conf *rss_conf)
187 struct priv *priv = dev->data->dev_private;
188 struct rte_eth_rss_conf *priv_rss_conf;
192 assert(priv->rss_conf != NULL);
194 priv_rss_conf = rss_hash_get(priv, rss_conf->rss_hf);
195 if (!priv_rss_conf) {
196 rss_conf->rss_hf = 0;
200 if (rss_conf->rss_key &&
201 rss_conf->rss_key_len >= priv_rss_conf->rss_key_len)
202 memcpy(rss_conf->rss_key,
203 priv_rss_conf->rss_key,
204 priv_rss_conf->rss_key_len);
205 rss_conf->rss_key_len = priv_rss_conf->rss_key_len;
206 rss_conf->rss_hf = priv_rss_conf->rss_hf;
213 * Allocate/reallocate RETA index table.
216 * Pointer to private structure.
218 * The size of the array to allocate.
221 * 0 on success, errno value on failure.
224 priv_rss_reta_index_resize(struct priv *priv, unsigned int reta_size)
227 unsigned int old_size = priv->reta_idx_n;
229 if (priv->reta_idx_n == reta_size)
232 mem = rte_realloc(priv->reta_idx,
233 reta_size * sizeof((*priv->reta_idx)[0]), 0);
236 priv->reta_idx = mem;
237 priv->reta_idx_n = reta_size;
239 if (old_size < reta_size)
240 memset(&(*priv->reta_idx)[old_size], 0,
241 (reta_size - old_size) *
242 sizeof((*priv->reta_idx)[0]));
250 * Pointer to private structure.
251 * @param[in, out] reta_conf
252 * Pointer to the first RETA configuration structure.
257 * 0 on success, errno value on failure.
260 priv_dev_rss_reta_query(struct priv *priv,
261 struct rte_eth_rss_reta_entry64 *reta_conf,
262 unsigned int reta_size)
268 /* See RETA comment in mlx5_dev_infos_get(). */
269 ret = priv_rss_reta_index_resize(priv, priv->ind_table_max_size);
273 /* Fill each entry of the table even if its bit is not set. */
274 for (idx = 0, i = 0; (i != reta_size); ++i) {
275 idx = i / RTE_RETA_GROUP_SIZE;
276 reta_conf[idx].reta[i % RTE_RETA_GROUP_SIZE] =
277 (*priv->reta_idx)[i];
286 * Pointer to private structure.
287 * @param[in] reta_conf
288 * Pointer to the first RETA configuration structure.
293 * 0 on success, errno value on failure.
296 priv_dev_rss_reta_update(struct priv *priv,
297 struct rte_eth_rss_reta_entry64 *reta_conf,
298 unsigned int reta_size)
305 /* See RETA comment in mlx5_dev_infos_get(). */
306 ret = priv_rss_reta_index_resize(priv, priv->ind_table_max_size);
310 for (idx = 0, i = 0; (i != reta_size); ++i) {
311 idx = i / RTE_RETA_GROUP_SIZE;
312 pos = i % RTE_RETA_GROUP_SIZE;
313 if (((reta_conf[idx].mask >> i) & 0x1) == 0)
315 assert(reta_conf[idx].reta[pos] < priv->rxqs_n);
316 (*priv->reta_idx)[i] = reta_conf[idx].reta[pos];
322 * DPDK callback to get the RETA indirection table.
325 * Pointer to Ethernet device structure.
327 * Pointer to RETA configuration structure array.
329 * Size of the RETA table.
332 * 0 on success, negative errno value on failure.
335 mlx5_dev_rss_reta_query(struct rte_eth_dev *dev,
336 struct rte_eth_rss_reta_entry64 *reta_conf,
340 struct priv *priv = dev->data->dev_private;
343 ret = priv_dev_rss_reta_query(priv, reta_conf, reta_size);
349 * DPDK callback to update the RETA indirection table.
352 * Pointer to Ethernet device structure.
354 * Pointer to RETA configuration structure array.
356 * Size of the RETA table.
359 * 0 on success, negative errno value on failure.
362 mlx5_dev_rss_reta_update(struct rte_eth_dev *dev,
363 struct rte_eth_rss_reta_entry64 *reta_conf,
367 struct priv *priv = dev->data->dev_private;
370 ret = priv_dev_rss_reta_update(priv, reta_conf, reta_size);