From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 89BF2A0524; Wed, 2 Jun 2021 11:41:27 +0200 (CEST) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id E88914115E; Wed, 2 Jun 2021 11:39:58 +0200 (CEST) Received: from smtpproxy21.qq.com (smtpbg704.qq.com [203.205.195.105]) by mails.dpdk.org (Postfix) with ESMTP id 6D54D4114F for ; Wed, 2 Jun 2021 11:39:57 +0200 (CEST) X-QQ-mid: bizesmtp32t1622626793tuf91une Received: from wxdbg.localdomain.com (unknown [183.129.236.74]) by esmtp6.qq.com (ESMTP) with id ; Wed, 02 Jun 2021 17:39:53 +0800 (CST) X-QQ-SSF: 01400000000000D0E000B00A0000000 X-QQ-FEAT: mJG+EqVdzGCmdd4hlPiR1rCmce81bDM0XFlJnEJFe1oeRxrvMMvIKo+SMM6R3 EwirAS82e+tOE9ufHDnDHjEMM/+f+pfDTN2VdoVZN1QwAEpFXpUVAwF8knKBHTXqroe1tjC oVzuA6xZnJnkq4RiwUtBrReon8ioo4KzQ/pMQ0DW/A1PjejVGm928HrNc8vqpC43tolgdGj fZgGJYJPa2Nm2sqruW3xhPuey/BiBjqr9+IrV7pZ/Pxjt0vemOhqhqlWf0z/aiGt2kc9X// 9s3Dh5wX20ITJ/mKg5vTgw27VX0E8kZBXiaBPr0nwZc6GwXJk61AE/wevO3lt6UxgSzftak WzlDN6+RymhP/XsEXqvPqqoL1ob1g== X-QQ-GoodBg: 2 From: Jiawen Wu To: dev@dpdk.org Cc: Jiawen Wu Date: Wed, 2 Jun 2021 17:40:59 +0800 Message-Id: <20210602094108.1575640-16-jiawenwu@trustnetic.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210602094108.1575640-1-jiawenwu@trustnetic.com> References: <20210602094108.1575640-1-jiawenwu@trustnetic.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtp:trustnetic.com:qybgforeign:qybgforeign7 X-QQ-Bgrelay: 1 Subject: [dpdk-dev] [PATCH v5 15/24] net/ngbe: add Rx queue setup and release X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 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" Setup device Rx queue and release Rx queue. Signed-off-by: Jiawen Wu --- drivers/net/ngbe/ngbe_ethdev.c | 9 + drivers/net/ngbe/ngbe_ethdev.h | 8 + drivers/net/ngbe/ngbe_rxtx.c | 305 +++++++++++++++++++++++++++++++++ drivers/net/ngbe/ngbe_rxtx.h | 90 ++++++++++ 4 files changed, 412 insertions(+) diff --git a/drivers/net/ngbe/ngbe_ethdev.c b/drivers/net/ngbe/ngbe_ethdev.c index 97b6de3aa4..8eb41a7a2b 100644 --- a/drivers/net/ngbe/ngbe_ethdev.c +++ b/drivers/net/ngbe/ngbe_ethdev.c @@ -262,12 +262,19 @@ static int ngbe_dev_configure(struct rte_eth_dev *dev) { struct ngbe_interrupt *intr = NGBE_DEV_INTR(dev); + struct ngbe_adapter *adapter = NGBE_DEV_ADAPTER(dev); PMD_INIT_FUNC_TRACE(); /* set flag to update link status after init */ intr->flags |= NGBE_FLAG_NEED_LINK_UPDATE; + /* + * Initialize to TRUE. If any of Rx queues doesn't meet the bulk + * allocation Rx preconditions we will reset it. + */ + adapter->rx_bulk_alloc_allowed = true; + return 0; } @@ -654,6 +661,8 @@ static const struct eth_dev_ops ngbe_eth_dev_ops = { .dev_configure = ngbe_dev_configure, .dev_infos_get = ngbe_dev_info_get, .link_update = ngbe_dev_link_update, + .rx_queue_setup = ngbe_dev_rx_queue_setup, + .rx_queue_release = ngbe_dev_rx_queue_release, }; RTE_PMD_REGISTER_PCI(net_ngbe, rte_ngbe_pmd); diff --git a/drivers/net/ngbe/ngbe_ethdev.h b/drivers/net/ngbe/ngbe_ethdev.h index 10c23c41d1..c324ca7e0f 100644 --- a/drivers/net/ngbe/ngbe_ethdev.h +++ b/drivers/net/ngbe/ngbe_ethdev.h @@ -43,6 +43,7 @@ struct ngbe_interrupt { struct ngbe_adapter { struct ngbe_hw hw; struct ngbe_interrupt intr; + bool rx_bulk_alloc_allowed; }; #define NGBE_DEV_ADAPTER(dev) \ @@ -54,6 +55,13 @@ struct ngbe_adapter { #define NGBE_DEV_INTR(dev) \ (&((struct ngbe_adapter *)(dev)->data->dev_private)->intr) +void ngbe_dev_rx_queue_release(void *rxq); + +int ngbe_dev_rx_queue_setup(struct rte_eth_dev *dev, uint16_t rx_queue_id, + uint16_t nb_rx_desc, unsigned int socket_id, + const struct rte_eth_rxconf *rx_conf, + struct rte_mempool *mb_pool); + int ngbe_dev_link_update_share(struct rte_eth_dev *dev, int wait_to_complete); diff --git a/drivers/net/ngbe/ngbe_rxtx.c b/drivers/net/ngbe/ngbe_rxtx.c index ae24367b18..9992983bef 100644 --- a/drivers/net/ngbe/ngbe_rxtx.c +++ b/drivers/net/ngbe/ngbe_rxtx.c @@ -3,9 +3,14 @@ * Copyright(c) 2010-2017 Intel Corporation */ +#include + #include #include +#include +#include +#include "ngbe_logs.h" #include "base/ngbe.h" #include "ngbe_ethdev.h" #include "ngbe_rxtx.h" @@ -37,6 +42,166 @@ ngbe_get_tx_port_offloads(struct rte_eth_dev *dev) return tx_offload_capa; } +/** + * ngbe_free_sc_cluster - free the not-yet-completed scattered cluster + * + * The "next" pointer of the last segment of (not-yet-completed) RSC clusters + * in the sw_rsc_ring is not set to NULL but rather points to the next + * mbuf of this RSC aggregation (that has not been completed yet and still + * resides on the HW ring). So, instead of calling for rte_pktmbuf_free() we + * will just free first "nb_segs" segments of the cluster explicitly by calling + * an rte_pktmbuf_free_seg(). + * + * @m scattered cluster head + */ +static void __rte_cold +ngbe_free_sc_cluster(struct rte_mbuf *m) +{ + uint16_t i, nb_segs = m->nb_segs; + struct rte_mbuf *next_seg; + + for (i = 0; i < nb_segs; i++) { + next_seg = m->next; + rte_pktmbuf_free_seg(m); + m = next_seg; + } +} + +static void __rte_cold +ngbe_rx_queue_release_mbufs(struct ngbe_rx_queue *rxq) +{ + unsigned int i; + + if (rxq->sw_ring != NULL) { + for (i = 0; i < rxq->nb_rx_desc; i++) { + if (rxq->sw_ring[i].mbuf != NULL) { + rte_pktmbuf_free_seg(rxq->sw_ring[i].mbuf); + rxq->sw_ring[i].mbuf = NULL; + } + } + if (rxq->rx_nb_avail) { + for (i = 0; i < rxq->rx_nb_avail; ++i) { + struct rte_mbuf *mb; + + mb = rxq->rx_stage[rxq->rx_next_avail + i]; + rte_pktmbuf_free_seg(mb); + } + rxq->rx_nb_avail = 0; + } + } + + if (rxq->sw_sc_ring) + for (i = 0; i < rxq->nb_rx_desc; i++) + if (rxq->sw_sc_ring[i].fbuf) { + ngbe_free_sc_cluster(rxq->sw_sc_ring[i].fbuf); + rxq->sw_sc_ring[i].fbuf = NULL; + } +} + +static void __rte_cold +ngbe_rx_queue_release(struct ngbe_rx_queue *rxq) +{ + if (rxq != NULL) { + ngbe_rx_queue_release_mbufs(rxq); + rte_free(rxq->sw_ring); + rte_free(rxq->sw_sc_ring); + rte_free(rxq); + } +} + +void __rte_cold +ngbe_dev_rx_queue_release(void *rxq) +{ + ngbe_rx_queue_release(rxq); +} + +/* + * Check if Rx Burst Bulk Alloc function can be used. + * Return + * 0: the preconditions are satisfied and the bulk allocation function + * can be used. + * -EINVAL: the preconditions are NOT satisfied and the default Rx burst + * function must be used. + */ +static inline int __rte_cold +check_rx_burst_bulk_alloc_preconditions(struct ngbe_rx_queue *rxq) +{ + int ret = 0; + + /* + * Make sure the following pre-conditions are satisfied: + * rxq->rx_free_thresh >= RTE_PMD_NGBE_RX_MAX_BURST + * rxq->rx_free_thresh < rxq->nb_rx_desc + * (rxq->nb_rx_desc % rxq->rx_free_thresh) == 0 + * Scattered packets are not supported. This should be checked + * outside of this function. + */ + if (!(rxq->rx_free_thresh >= RTE_PMD_NGBE_RX_MAX_BURST)) { + PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: " + "rxq->rx_free_thresh=%d, " + "RTE_PMD_NGBE_RX_MAX_BURST=%d", + rxq->rx_free_thresh, RTE_PMD_NGBE_RX_MAX_BURST); + ret = -EINVAL; + } else if (!(rxq->rx_free_thresh < rxq->nb_rx_desc)) { + PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: " + "rxq->rx_free_thresh=%d, " + "rxq->nb_rx_desc=%d", + rxq->rx_free_thresh, rxq->nb_rx_desc); + ret = -EINVAL; + } else if (!((rxq->nb_rx_desc % rxq->rx_free_thresh) == 0)) { + PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions: " + "rxq->nb_rx_desc=%d, " + "rxq->rx_free_thresh=%d", + rxq->nb_rx_desc, rxq->rx_free_thresh); + ret = -EINVAL; + } + + return ret; +} + +/* Reset dynamic ngbe_rx_queue fields back to defaults */ +static void __rte_cold +ngbe_reset_rx_queue(struct ngbe_adapter *adapter, struct ngbe_rx_queue *rxq) +{ + static const struct ngbe_rx_desc zeroed_desc = { + {{0}, {0} }, {{0}, {0} } }; + unsigned int i; + uint16_t len = rxq->nb_rx_desc; + + /* + * By default, the Rx queue setup function allocates enough memory for + * NGBE_RING_DESC_MAX. The Rx Burst bulk allocation function requires + * extra memory at the end of the descriptor ring to be zero'd out. + */ + if (adapter->rx_bulk_alloc_allowed) + /* zero out extra memory */ + len += RTE_PMD_NGBE_RX_MAX_BURST; + + /* + * Zero out HW ring memory. Zero out extra memory at the end of + * the H/W ring so look-ahead logic in Rx Burst bulk alloc function + * reads extra memory as zeros. + */ + for (i = 0; i < len; i++) + rxq->rx_ring[i] = zeroed_desc; + + /* + * initialize extra software ring entries. Space for these extra + * entries is always allocated + */ + memset(&rxq->fake_mbuf, 0x0, sizeof(rxq->fake_mbuf)); + for (i = rxq->nb_rx_desc; i < len; ++i) + rxq->sw_ring[i].mbuf = &rxq->fake_mbuf; + + rxq->rx_nb_avail = 0; + rxq->rx_next_avail = 0; + rxq->rx_free_trigger = (uint16_t)(rxq->rx_free_thresh - 1); + rxq->rx_tail = 0; + rxq->nb_rx_hold = 0; + rxq->pkt_first_seg = NULL; + rxq->pkt_last_seg = NULL; +} + uint64_t ngbe_get_rx_queue_offloads(struct rte_eth_dev *dev __rte_unused) { @@ -65,3 +230,143 @@ ngbe_get_rx_port_offloads(struct rte_eth_dev *dev) return offloads; } +int __rte_cold +ngbe_dev_rx_queue_setup(struct rte_eth_dev *dev, + uint16_t queue_idx, + uint16_t nb_desc, + unsigned int socket_id, + const struct rte_eth_rxconf *rx_conf, + struct rte_mempool *mp) +{ + const struct rte_memzone *rz; + struct ngbe_rx_queue *rxq; + struct ngbe_hw *hw; + uint16_t len; + struct ngbe_adapter *adapter = NGBE_DEV_ADAPTER(dev); + uint64_t offloads; + + PMD_INIT_FUNC_TRACE(); + hw = NGBE_DEV_HW(dev); + + offloads = rx_conf->offloads | dev->data->dev_conf.rxmode.offloads; + + /* + * Validate number of receive descriptors. + * It must not exceed hardware maximum, and must be multiple + * of NGBE_ALIGN. + */ + if (nb_desc % NGBE_RXD_ALIGN != 0 || + nb_desc > NGBE_RING_DESC_MAX || + nb_desc < NGBE_RING_DESC_MIN) { + return -EINVAL; + } + + /* Free memory prior to re-allocation if needed... */ + if (dev->data->rx_queues[queue_idx] != NULL) { + ngbe_rx_queue_release(dev->data->rx_queues[queue_idx]); + dev->data->rx_queues[queue_idx] = NULL; + } + + /* First allocate the rx queue data structure */ + rxq = rte_zmalloc_socket("ethdev RX queue", + sizeof(struct ngbe_rx_queue), + RTE_CACHE_LINE_SIZE, socket_id); + if (rxq == NULL) + return -ENOMEM; + rxq->mb_pool = mp; + rxq->nb_rx_desc = nb_desc; + rxq->rx_free_thresh = rx_conf->rx_free_thresh; + rxq->queue_id = queue_idx; + rxq->reg_idx = queue_idx; + rxq->port_id = dev->data->port_id; + if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_KEEP_CRC) + rxq->crc_len = RTE_ETHER_CRC_LEN; + else + rxq->crc_len = 0; + rxq->drop_en = rx_conf->rx_drop_en; + rxq->rx_deferred_start = rx_conf->rx_deferred_start; + rxq->offloads = offloads; + rxq->pkt_type_mask = NGBE_PTID_MASK; + + /* + * Allocate RX ring hardware descriptors. A memzone large enough to + * handle the maximum ring size is allocated in order to allow for + * resizing in later calls to the queue setup function. + */ + rz = rte_eth_dma_zone_reserve(dev, "rx_ring", queue_idx, + RX_RING_SZ, NGBE_ALIGN, socket_id); + if (rz == NULL) { + ngbe_rx_queue_release(rxq); + return -ENOMEM; + } + + /* + * Zero init all the descriptors in the ring. + */ + memset(rz->addr, 0, RX_RING_SZ); + + rxq->rdt_reg_addr = NGBE_REG_ADDR(hw, NGBE_RXWP(rxq->reg_idx)); + rxq->rdh_reg_addr = NGBE_REG_ADDR(hw, NGBE_RXRP(rxq->reg_idx)); + + rxq->rx_ring_phys_addr = TMZ_PADDR(rz); + rxq->rx_ring = (struct ngbe_rx_desc *)TMZ_VADDR(rz); + + /* + * Certain constraints must be met in order to use the bulk buffer + * allocation Rx burst function. If any of Rx queues doesn't meet them + * the feature should be disabled for the whole port. + */ + if (check_rx_burst_bulk_alloc_preconditions(rxq)) { + PMD_INIT_LOG(DEBUG, "queue[%d] doesn't meet Rx Bulk Alloc " + "preconditions - canceling the feature for " + "the whole port[%d]", + rxq->queue_id, rxq->port_id); + adapter->rx_bulk_alloc_allowed = false; + } + + /* + * Allocate software ring. Allow for space at the end of the + * S/W ring to make sure look-ahead logic in bulk alloc Rx burst + * function does not access an invalid memory region. + */ + len = nb_desc; + if (adapter->rx_bulk_alloc_allowed) + len += RTE_PMD_NGBE_RX_MAX_BURST; + + rxq->sw_ring = rte_zmalloc_socket("rxq->sw_ring", + sizeof(struct ngbe_rx_entry) * len, + RTE_CACHE_LINE_SIZE, socket_id); + if (!rxq->sw_ring) { + ngbe_rx_queue_release(rxq); + return -ENOMEM; + } + + /* + * Always allocate even if it's not going to be needed in order to + * simplify the code. + * + * This ring is used in Scattered Rx cases and Scattered Rx may + * be requested in ngbe_dev_rx_init(), which is called later from + * dev_start() flow. + */ + rxq->sw_sc_ring = + rte_zmalloc_socket("rxq->sw_sc_ring", + sizeof(struct ngbe_scattered_rx_entry) * len, + RTE_CACHE_LINE_SIZE, socket_id); + if (!rxq->sw_sc_ring) { + ngbe_rx_queue_release(rxq); + return -ENOMEM; + } + + PMD_INIT_LOG(DEBUG, "sw_ring=%p sw_sc_ring=%p hw_ring=%p " + "dma_addr=0x%" PRIx64, + rxq->sw_ring, rxq->sw_sc_ring, rxq->rx_ring, + rxq->rx_ring_phys_addr); + + dev->data->rx_queues[queue_idx] = rxq; + + ngbe_reset_rx_queue(adapter, rxq); + + return 0; +} + diff --git a/drivers/net/ngbe/ngbe_rxtx.h b/drivers/net/ngbe/ngbe_rxtx.h index 39011ee286..e1676a53b4 100644 --- a/drivers/net/ngbe/ngbe_rxtx.h +++ b/drivers/net/ngbe/ngbe_rxtx.h @@ -6,7 +6,97 @@ #ifndef _NGBE_RXTX_H_ #define _NGBE_RXTX_H_ +/***************************************************************************** + * Receive Descriptor + *****************************************************************************/ +struct ngbe_rx_desc { + struct { + union { + __le32 dw0; + struct { + __le16 pkt; + __le16 hdr; + } lo; + }; + union { + __le32 dw1; + struct { + __le16 ipid; + __le16 csum; + } hi; + }; + } qw0; /* also as r.pkt_addr */ + struct { + union { + __le32 dw2; + struct { + __le32 status; + } lo; + }; + union { + __le32 dw3; + struct { + __le16 len; + __le16 tag; + } hi; + }; + } qw1; /* also as r.hdr_addr */ +}; + +#define RTE_PMD_NGBE_RX_MAX_BURST 32 + +#define RX_RING_SZ ((NGBE_RING_DESC_MAX + RTE_PMD_NGBE_RX_MAX_BURST) * \ + sizeof(struct ngbe_rx_desc)) + #define NGBE_TX_MAX_SEG 40 +#define NGBE_PTID_MASK 0xFF + +/** + * Structure associated with each descriptor of the RX ring of a RX queue. + */ +struct ngbe_rx_entry { + struct rte_mbuf *mbuf; /**< mbuf associated with RX descriptor. */ +}; + +struct ngbe_scattered_rx_entry { + struct rte_mbuf *fbuf; /**< First segment of the fragmented packet. */ +}; + +/** + * Structure associated with each RX queue. + */ +struct ngbe_rx_queue { + struct rte_mempool *mb_pool; /**< mbuf pool to populate RX ring. */ + volatile struct ngbe_rx_desc *rx_ring; /**< RX ring virtual address. */ + uint64_t rx_ring_phys_addr; /**< RX ring DMA address. */ + volatile uint32_t *rdt_reg_addr; /**< RDT register address. */ + volatile uint32_t *rdh_reg_addr; /**< RDH register address. */ + struct ngbe_rx_entry *sw_ring; /**< address of RX software ring. */ + /**< address of scattered Rx software ring. */ + struct ngbe_scattered_rx_entry *sw_sc_ring; + struct rte_mbuf *pkt_first_seg; /**< First segment of current packet. */ + struct rte_mbuf *pkt_last_seg; /**< Last segment of current packet. */ + uint16_t nb_rx_desc; /**< number of RX descriptors. */ + uint16_t rx_tail; /**< current value of RDT register. */ + uint16_t nb_rx_hold; /**< number of held free RX desc. */ + uint16_t rx_nb_avail; /**< nr of staged pkts ready to ret to app */ + uint16_t rx_next_avail; /**< idx of next staged pkt to ret to app */ + uint16_t rx_free_trigger; /**< triggers rx buffer allocation */ + uint16_t rx_free_thresh; /**< max free RX desc to hold. */ + uint16_t queue_id; /**< RX queue index. */ + uint16_t reg_idx; /**< RX queue register index. */ + /**< Packet type mask for different NICs. */ + uint16_t pkt_type_mask; + uint16_t port_id; /**< Device port identifier. */ + uint8_t crc_len; /**< 0 if CRC stripped, 4 otherwise. */ + uint8_t drop_en; /**< If not 0, set SRRCTL.Drop_En. */ + uint8_t rx_deferred_start; /**< not in global dev start. */ + uint64_t offloads; /**< Rx offloads with DEV_RX_OFFLOAD_* */ + /** need to alloc dummy mbuf, for wraparound when scanning hw ring */ + struct rte_mbuf fake_mbuf; + /** hold packets to return to application */ + struct rte_mbuf *rx_stage[RTE_PMD_NGBE_RX_MAX_BURST * 2]; +}; uint64_t ngbe_get_tx_port_offloads(struct rte_eth_dev *dev); uint64_t ngbe_get_rx_queue_offloads(struct rte_eth_dev *dev); -- 2.27.0