From: Nélio Laranjeiro Date: Mon, 9 Oct 2017 14:44:56 +0000 (+0200) Subject: net/mlx5: handle a single RSS hash key for all protocols X-Git-Tag: spdx-start~1514 X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=29c1d8bb3e79;p=dpdk.git net/mlx5: handle a single RSS hash key for all protocols Since RSS configuration can also be used by flow API, there is no more necessity to keep a list of RSS configurable for each protocol. Signed-off-by: Nelio Laranjeiro Acked-by: Yongseok Koh --- diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c index c818cf8971..46c89c697c 100644 --- a/drivers/net/mlx5/mlx5.c +++ b/drivers/net/mlx5/mlx5.c @@ -225,11 +225,8 @@ mlx5_dev_close(struct rte_eth_dev *dev) claim_zero(ibv_close_device(priv->ctx)); } else assert(priv->ctx == NULL); - if (priv->rss_conf != NULL) { - for (i = 0; (i != hash_rxq_init_n); ++i) - rte_free((*priv->rss_conf)[i]); - rte_free(priv->rss_conf); - } + if (priv->rss_conf.rss_key != NULL) + rte_free(priv->rss_conf.rss_key); if (priv->reta_idx != NULL) rte_free(priv->reta_idx); priv_socket_uninit(priv); @@ -816,19 +813,6 @@ mlx5_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev) priv->txq_inline = MLX5_WQE_SIZE_MAX - MLX5_WQE_SIZE; } - /* Allocate and register default RSS hash keys. */ - priv->rss_conf = rte_calloc(__func__, hash_rxq_init_n, - sizeof((*priv->rss_conf)[0]), 0); - if (priv->rss_conf == NULL) { - err = ENOMEM; - goto port_error; - } - err = rss_hash_rss_conf_new_key(priv, - rss_hash_default_key, - rss_hash_default_key_len, - ETH_RSS_PROTO_MASK); - if (err) - goto port_error; /* Configure the first MAC address by default. */ if (priv_get_mac(priv, &mac.addr_bytes)) { ERROR("cannot get MAC address, is mlx5_en loaded?" @@ -898,10 +882,8 @@ mlx5_pci_probe(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev) continue; port_error: - if (priv) { - rte_free(priv->rss_conf); + if (priv) rte_free(priv); - } if (pd) claim_zero(ibv_dealloc_pd(pd)); if (ctx) diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h index e83961f17c..47185064a8 100644 --- a/drivers/net/mlx5/mlx5.h +++ b/drivers/net/mlx5/mlx5.h @@ -134,9 +134,7 @@ struct priv { /* Hash RX QPs feeding the indirection table. */ struct hash_rxq (*hash_rxqs)[]; unsigned int hash_rxqs_n; /* Hash RX QPs array size. */ - /* RSS configuration array indexed by hash RX queue type. */ - struct rte_eth_rss_conf *(*rss_conf)[]; - uint64_t rss_hf; /* RSS DPDK bit field of active RSS. */ + struct rte_eth_rss_conf rss_conf; /* RSS configuration. */ struct rte_intr_handle intr_handle; /* Interrupt handler. */ unsigned int (*reta_idx)[]; /* RETA index table. */ unsigned int reta_idx_n; /* RETA index size. */ @@ -226,8 +224,6 @@ void mlx5_mac_addr_set(struct rte_eth_dev *, struct ether_addr *); /* mlx5_rss.c */ -int rss_hash_rss_conf_new_key(struct priv *, const uint8_t *, unsigned int, - uint64_t); int mlx5_rss_hash_update(struct rte_eth_dev *, struct rte_eth_rss_conf *); int mlx5_rss_hash_conf_get(struct rte_eth_dev *, struct rte_eth_rss_conf *); int priv_rss_reta_index_resize(struct priv *, unsigned int); diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c index 318bc9db2b..9f5b48963a 100644 --- a/drivers/net/mlx5/mlx5_ethdev.c +++ b/drivers/net/mlx5/mlx5_ethdev.c @@ -575,8 +575,29 @@ dev_configure(struct rte_eth_dev *dev) unsigned int i; unsigned int j; unsigned int reta_idx_n; + const uint8_t use_app_rss_key = + !!dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len; - priv->rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; + if (use_app_rss_key && + (dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key_len != + rss_hash_default_key_len)) { + /* MLX5 RSS only support 40bytes key. */ + return EINVAL; + } + priv->rss_conf.rss_key = + rte_realloc(priv->rss_conf.rss_key, + rss_hash_default_key_len, 0); + if (!priv->rss_conf.rss_key) { + ERROR("cannot allocate RSS hash key memory (%u)", rxqs_n); + return ENOMEM; + } + memcpy(priv->rss_conf.rss_key, + use_app_rss_key ? + dev->data->dev_conf.rx_adv_conf.rss_conf.rss_key : + rss_hash_default_key, + rss_hash_default_key_len); + priv->rss_conf.rss_key_len = rss_hash_default_key_len; + priv->rss_conf.rss_hf = dev->data->dev_conf.rx_adv_conf.rss_conf.rss_hf; priv->rxqs = (void *)dev->data->rx_queues; priv->txqs = (void *)dev->data->tx_queues; if (txqs_n != priv->txqs_n) { @@ -694,9 +715,7 @@ mlx5_dev_infos_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *info) info->if_index = if_nametoindex(ifname); info->reta_size = priv->reta_idx_n ? priv->reta_idx_n : priv->ind_table_max_size; - info->hash_key_size = ((*priv->rss_conf) ? - (*priv->rss_conf)[0]->rss_key_len : - 0); + info->hash_key_size = priv->rss_conf.rss_key_len; info->speed_capa = priv->link_speed_capa; priv_unlock(priv); } diff --git a/drivers/net/mlx5/mlx5_rss.c b/drivers/net/mlx5/mlx5_rss.c index 8942879922..ad6d9ab701 100644 --- a/drivers/net/mlx5/mlx5_rss.c +++ b/drivers/net/mlx5/mlx5_rss.c @@ -53,74 +53,6 @@ #include "mlx5.h" #include "mlx5_rxtx.h" -/** - * Get a RSS configuration hash key. - * - * @param priv - * Pointer to private structure. - * @param rss_hf - * RSS hash functions configuration must be retrieved for. - * - * @return - * Pointer to a RSS configuration structure or NULL if rss_hf cannot - * be matched. - */ -static struct rte_eth_rss_conf * -rss_hash_get(struct priv *priv, uint64_t rss_hf) -{ - unsigned int i; - - for (i = 0; (i != hash_rxq_init_n); ++i) { - uint64_t dpdk_rss_hf = hash_rxq_init[i].dpdk_rss_hf; - - if (!(dpdk_rss_hf & rss_hf)) - continue; - return (*priv->rss_conf)[i]; - } - return NULL; -} - -/** - * Register a RSS key. - * - * @param priv - * Pointer to private structure. - * @param key - * Hash key to register. - * @param key_len - * Hash key length in bytes. - * @param rss_hf - * RSS hash functions the provided key applies to. - * - * @return - * 0 on success, errno value on failure. - */ -int -rss_hash_rss_conf_new_key(struct priv *priv, const uint8_t *key, - unsigned int key_len, uint64_t rss_hf) -{ - unsigned int i; - - for (i = 0; (i != hash_rxq_init_n); ++i) { - struct rte_eth_rss_conf *rss_conf; - uint64_t dpdk_rss_hf = hash_rxq_init[i].dpdk_rss_hf; - - if (!(dpdk_rss_hf & rss_hf)) - continue; - rss_conf = rte_realloc((*priv->rss_conf)[i], - (sizeof(*rss_conf) + key_len), - 0); - if (!rss_conf) - return ENOMEM; - rss_conf->rss_key = (void *)(rss_conf + 1); - rss_conf->rss_key_len = key_len; - rss_conf->rss_hf = dpdk_rss_hf; - memcpy(rss_conf->rss_key, key, key_len); - (*priv->rss_conf)[i] = rss_conf; - } - return 0; -} - /** * DPDK callback to update the RSS hash configuration. * @@ -137,23 +69,24 @@ mlx5_rss_hash_update(struct rte_eth_dev *dev, struct rte_eth_rss_conf *rss_conf) { struct priv *priv = dev->data->dev_private; - int err = 0; + int ret = 0; priv_lock(priv); - - assert(priv->rss_conf != NULL); - - /* Apply configuration. */ - if (rss_conf->rss_key) - err = rss_hash_rss_conf_new_key(priv, - rss_conf->rss_key, - rss_conf->rss_key_len, - rss_conf->rss_hf); - /* Store protocols for which RSS is enabled. */ - priv->rss_hf = rss_conf->rss_hf; + if (rss_conf->rss_key_len) { + priv->rss_conf.rss_key = rte_realloc(priv->rss_conf.rss_key, + rss_conf->rss_key_len, 0); + if (!priv->rss_conf.rss_key) { + ret = -ENOMEM; + goto out; + } + memcpy(&priv->rss_conf.rss_key, rss_conf->rss_key, + rss_conf->rss_key_len); + priv->rss_conf.rss_key_len = rss_conf->rss_key_len; + } + priv->rss_conf.rss_hf = rss_conf->rss_hf; +out: priv_unlock(priv); - assert(err >= 0); - return -err; + return ret; } /** @@ -172,28 +105,22 @@ mlx5_rss_hash_conf_get(struct rte_eth_dev *dev, struct rte_eth_rss_conf *rss_conf) { struct priv *priv = dev->data->dev_private; - struct rte_eth_rss_conf *priv_rss_conf; + int ret = 0; priv_lock(priv); - - assert(priv->rss_conf != NULL); - - priv_rss_conf = rss_hash_get(priv, rss_conf->rss_hf); - if (!priv_rss_conf) { - rss_conf->rss_hf = 0; - priv_unlock(priv); - return -EINVAL; + if (!rss_conf->rss_key) { + ret = -ENOMEM; + goto out; } - if (rss_conf->rss_key && - rss_conf->rss_key_len >= priv_rss_conf->rss_key_len) - memcpy(rss_conf->rss_key, - priv_rss_conf->rss_key, - priv_rss_conf->rss_key_len); - rss_conf->rss_key_len = priv_rss_conf->rss_key_len; - rss_conf->rss_hf = priv_rss_conf->rss_hf; - + if (rss_conf->rss_key_len < priv->rss_conf.rss_key_len) { + ret = -EINVAL; + goto out; + } + memcpy(rss_conf->rss_key, priv->rss_conf.rss_key, + priv->rss_conf.rss_key_len); +out: priv_unlock(priv); - return 0; + return ret; } /** diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c index c603d2b0a8..d37dfbb25b 100644 --- a/drivers/net/mlx5/mlx5_rxq.c +++ b/drivers/net/mlx5/mlx5_rxq.c @@ -299,7 +299,7 @@ priv_make_ind_table_init(struct priv *priv, /* Mandatory to receive frames not handled by normal hash RX queues. */ unsigned int hash_types_sup = 1 << HASH_RXQ_ETH; - rss_hf = priv->rss_hf; + rss_hf = priv->rss_conf.rss_hf; /* Process other protocols only if more than one queue. */ if (priv->rxqs_n > 1) for (i = 0; (i != hash_rxq_init_n); ++i) @@ -435,8 +435,7 @@ priv_create_hash_rxqs(struct priv *priv) struct hash_rxq *hash_rxq = &(*hash_rxqs)[i]; enum hash_rxq_type type = hash_rxq_type_from_pos(&ind_table_init[j], k); - struct rte_eth_rss_conf *priv_rss_conf = - (*priv->rss_conf)[type]; + struct rte_eth_rss_conf *priv_rss_conf = &priv->rss_conf; struct ibv_rx_hash_conf hash_conf = { .rx_hash_function = IBV_RX_HASH_FUNC_TOEPLITZ, .rx_hash_key_len = (priv_rss_conf ?