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[193.106.246.138]) by smtp.gmail.com with ESMTPSA id i11sm2789587lfo.84.2020.03.27.03.29.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Mar 2020 03:29:31 -0700 (PDT) From: Michal Krawczyk To: dev@dpdk.org Cc: mw@semihalf.com, mba@semihalf.com, gtzalik@amazon.com, evgenys@amazon.com, igorch@amazon.com, Michal Krawczyk Date: Fri, 27 Mar 2020 11:18:11 +0100 Message-Id: <20200327101823.12646-18-mk@semihalf.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200327101823.12646-1-mk@semihalf.com> References: <20200327101823.12646-1-mk@semihalf.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-dev] [PATCH 17/29] net/ena: add support for large LLQ headers X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" If the device supports larger LLQ (Low Latency Queue) headers, the user can activate them by enabling CONFIG_RTE_LIBRTE_ENA_LARGE_LLQ_HEADERS flag in the configuration file. If the device isn't supporting this feature, the default value will be used. Signed-off-by: Michal Krawczyk Reviewed-by: Igor Chauskin Reviewed-by: Guy Tzalik --- config/common_base | 1 + doc/guides/nics/ena.rst | 5 +++++ drivers/net/ena/ena_ethdev.c | 33 ++++++++++++++++++++++++++++++--- 3 files changed, 36 insertions(+), 3 deletions(-) diff --git a/config/common_base b/config/common_base index c31175f9d6..31f508b3cc 100644 --- a/config/common_base +++ b/config/common_base @@ -266,6 +266,7 @@ CONFIG_RTE_LIBRTE_ENA_DEBUG_RX=n CONFIG_RTE_LIBRTE_ENA_DEBUG_TX=n CONFIG_RTE_LIBRTE_ENA_DEBUG_TX_FREE=n CONFIG_RTE_LIBRTE_ENA_COM_DEBUG=n +CONFIG_RTE_LIBRTE_ENA_LARGE_LLQ_HEADERS=n # # Compile burst-oriented Cisco ENIC PMD driver diff --git a/doc/guides/nics/ena.rst b/doc/guides/nics/ena.rst index bbf27f235a..a953068cac 100644 --- a/doc/guides/nics/ena.rst +++ b/doc/guides/nics/ena.rst @@ -95,6 +95,11 @@ Configuration information * **CONFIG_RTE_LIBRTE_ENA_COM_DEBUG** (default n): Enables or disables debug logging of low level tx/rx logic in ena_com(base) within the ENA PMD driver. + * **CONFIG_RTE_LIBRTE_ENA_LARGE_LLQ_HEADERS** (default n): Enables or + disables usage of large LLQ headers. This option will have effect only if + the device also supports large LLQ headers. Otherwise, the default value + will be used. + **ENA Configuration Parameters** * **Number of Queues** diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c index e1d1a9a7b6..b8bf31be7c 100644 --- a/drivers/net/ena/ena_ethdev.c +++ b/drivers/net/ena/ena_ethdev.c @@ -894,6 +894,19 @@ ena_calc_io_queue_size(struct ena_calc_queue_size_ctx *ctx) max_rx_queue_size = rte_align32prevpow2(max_rx_queue_size); max_tx_queue_size = rte_align32prevpow2(max_tx_queue_size); +#ifdef RTE_LIBRTE_ENA_LARGE_LLQ_HEADERS + if ((llq->entry_size_ctrl_supported & ENA_ADMIN_LIST_ENTRY_SIZE_256B) && + (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV)) { + max_tx_queue_size /= 2; + PMD_INIT_LOG(INFO, + "Forcing large headers and decreasing maximum TX queue size to %d\n", + max_tx_queue_size); + } else { + PMD_INIT_LOG(ERR, + "Forcing large headers failed: LLQ is disabled or device does not support large headers\n"); + } +#endif + if (unlikely(max_rx_queue_size == 0 || max_tx_queue_size == 0)) { PMD_INIT_LOG(ERR, "Invalid queue size"); return -EFAULT; @@ -1595,14 +1608,28 @@ static void ena_timer_wd_callback(__rte_unused struct rte_timer *timer, } static inline void -set_default_llq_configurations(struct ena_llq_configurations *llq_config) +set_default_llq_configurations(struct ena_llq_configurations *llq_config, + struct ena_admin_feature_llq_desc *llq) { llq_config->llq_header_location = ENA_ADMIN_INLINE_HEADER; - llq_config->llq_ring_entry_size = ENA_ADMIN_LIST_ENTRY_SIZE_128B; llq_config->llq_stride_ctrl = ENA_ADMIN_MULTIPLE_DESCS_PER_ENTRY; llq_config->llq_num_decs_before_header = ENA_ADMIN_LLQ_NUM_DESCS_BEFORE_HEADER_2; +#ifdef RTE_LIBRTE_ENA_LARGE_LLQ_HEADERS + if ((llq->entry_size_ctrl_supported & ENA_ADMIN_LIST_ENTRY_SIZE_256B)) { + llq_config->llq_ring_entry_size = + ENA_ADMIN_LIST_ENTRY_SIZE_256B; + llq_config->llq_ring_entry_size_value = 256; + } else { + llq_config->llq_ring_entry_size = + ENA_ADMIN_LIST_ENTRY_SIZE_128B; + llq_config->llq_ring_entry_size_value = 128; + } +#else + llq_config->llq_ring_entry_size = ENA_ADMIN_LIST_ENTRY_SIZE_128B; llq_config->llq_ring_entry_size_value = 128; + RTE_SET_USED(llq); +#endif } static int @@ -1749,7 +1776,7 @@ static int eth_ena_dev_init(struct rte_eth_dev *eth_dev) } adapter->wd_state = wd_state; - set_default_llq_configurations(&llq_config); + set_default_llq_configurations(&llq_config, &get_feat_ctx.llq); rc = ena_set_queues_placement_policy(adapter, ena_dev, &get_feat_ctx.llq, &llq_config); if (unlikely(rc)) { -- 2.20.1