From mboxrd@z Thu Jan 1 00:00:00 1970 From: Igor Russkikh Subject: [PATCH v3 09/22] net/atlantic: RX side structures and implementation Date: Sat, 29 Sep 2018 13:30:23 +0300 Message-ID: <97aec34cd0a29f1daea939f42da8b21f6d1393df.1538215990.git.igor.russkikh@aquantia.com> References: Mime-Version: 1.0 Content-Type: text/plain Cc: pavel.belous@aquantia.com, igor.russkikh@aquantia.com, Pavel Belous To: dev@dpdk.org Return-path: Received: from NAM05-DM3-obe.outbound.protection.outlook.com (mail-eopbgr730078.outbound.protection.outlook.com [40.107.73.78]) by dpdk.org (Postfix) with ESMTP id 215461B1F9 for ; Sat, 29 Sep 2018 12:31:47 +0200 (CEST) In-Reply-To: List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Signed-off-by: Igor Russkikh Signed-off-by: Pavel Belous --- drivers/net/atlantic/Makefile | 2 +- drivers/net/atlantic/atl_ethdev.c | 71 +++++ drivers/net/atlantic/atl_ethdev.h | 19 ++ drivers/net/atlantic/atl_rxtx.c | 616 +++++++++++++++++++++++++++++++++++++- 4 files changed, 702 insertions(+), 6 deletions(-) diff --git a/drivers/net/atlantic/Makefile b/drivers/net/atlantic/Makefile index b88da362146d..62dcdbffa69c 100644 --- a/drivers/net/atlantic/Makefile +++ b/drivers/net/atlantic/Makefile @@ -15,7 +15,7 @@ EXPORT_MAP := rte_pmd_atlantic_version.map LIBABIVER := 1 -LDLIBS += -lrte_eal +LDLIBS += -lrte_eal -lrte_mbuf -lrte_mempool -lrte_ring LDLIBS += -lrte_ethdev -lrte_net LDLIBS += -lrte_bus_pci diff --git a/drivers/net/atlantic/atl_ethdev.c b/drivers/net/atlantic/atl_ethdev.c index 4347f9772358..cdcfc5ec02c2 100644 --- a/drivers/net/atlantic/atl_ethdev.c +++ b/drivers/net/atlantic/atl_ethdev.c @@ -27,6 +27,7 @@ static int atl_fw_version_get(struct rte_eth_dev *dev, char *fw_version, static void atl_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info); +static const uint32_t *atl_dev_supported_ptypes_get(struct rte_eth_dev *dev); static int eth_atl_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, struct rte_pci_device *pci_dev); @@ -72,6 +73,18 @@ static struct rte_pci_driver rte_atl_pmd = { .remove = eth_atl_pci_remove, }; +#define ATL_RX_OFFLOADS (DEV_RX_OFFLOAD_VLAN_STRIP \ + | DEV_RX_OFFLOAD_IPV4_CKSUM \ + | DEV_RX_OFFLOAD_UDP_CKSUM \ + | DEV_RX_OFFLOAD_TCP_CKSUM \ + | DEV_RX_OFFLOAD_JUMBO_FRAME) + +static const struct rte_eth_desc_lim rx_desc_lim = { + .nb_max = ATL_MAX_RING_DESC, + .nb_min = ATL_MIN_RING_DESC, + .nb_align = ATL_RXD_ALIGN, +}; + static const struct eth_dev_ops atl_eth_dev_ops = { .dev_configure = atl_dev_configure, .dev_start = atl_dev_start, @@ -81,6 +94,13 @@ static const struct eth_dev_ops atl_eth_dev_ops = { .fw_version_get = atl_fw_version_get, .dev_infos_get = atl_dev_info_get, + .dev_supported_ptypes_get = atl_dev_supported_ptypes_get, + + /* Queue Control */ + .rx_queue_start = atl_rx_queue_start, + .rx_queue_stop = atl_rx_queue_stop, + .rx_queue_setup = atl_rx_queue_setup, + .rx_queue_release = atl_rx_queue_release, }; static inline int32_t @@ -239,12 +259,19 @@ atl_dev_start(struct rte_eth_dev *dev) goto error; } + err = atl_start_queues(dev); + if (err < 0) { + PMD_INIT_LOG(ERR, "Unable to start rxtx queues"); + goto error; + } + atl_print_adapter_info(hw); return 0; error: PMD_INIT_LOG(ERR, "failure in atl_dev_start(): %d", err); + atl_stop_queues(dev); return -EIO; } @@ -261,6 +288,12 @@ atl_dev_stop(struct rte_eth_dev *dev) atl_reset_hw(hw); hw->adapter_stopped = 0; + atl_stop_queues(dev); + + /* Clear stored conf */ + dev->data->scattered_rx = 0; + dev->data->lro = 0; + } /* @@ -277,6 +310,8 @@ atl_dev_close(struct rte_eth_dev *dev) atl_dev_stop(dev); hw->adapter_stopped = 1; + + atl_free_queues(dev); } static int @@ -320,11 +355,47 @@ atl_dev_info_get(struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info) { struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev); + dev_info->max_rx_queues = AQ_HW_MAX_RX_QUEUES; + dev_info->max_tx_queues = AQ_HW_MAX_TX_QUEUES; + + dev_info->min_rx_bufsize = 1024; + dev_info->max_rx_pktlen = HW_ATL_B0_MTU_JUMBO; + dev_info->max_mac_addrs = HW_ATL_B0_MAC_MAX; dev_info->max_vfs = pci_dev->max_vfs; dev_info->max_hash_mac_addrs = 0; dev_info->max_vmdq_pools = 0; dev_info->vmdq_queue_num = 0; + + dev_info->rx_offload_capa = ATL_RX_OFFLOADS; + + dev_info->default_rxconf = (struct rte_eth_rxconf) { + .rx_free_thresh = ATL_DEFAULT_RX_FREE_THRESH, + }; + + dev_info->rx_desc_lim = rx_desc_lim; +} + +static const uint32_t * +atl_dev_supported_ptypes_get(struct rte_eth_dev *dev) +{ + static const uint32_t ptypes[] = { + RTE_PTYPE_L2_ETHER, + RTE_PTYPE_L2_ETHER_ARP, + RTE_PTYPE_L2_ETHER_VLAN, + RTE_PTYPE_L3_IPV4, + RTE_PTYPE_L3_IPV6, + RTE_PTYPE_L4_TCP, + RTE_PTYPE_L4_UDP, + RTE_PTYPE_L4_SCTP, + RTE_PTYPE_L4_ICMP, + RTE_PTYPE_UNKNOWN + }; + + if (dev->rx_pkt_burst == atl_recv_pkts) + return ptypes; + + return NULL; } RTE_PMD_REGISTER_PCI(net_atlantic, rte_atl_pmd); diff --git a/drivers/net/atlantic/atl_ethdev.h b/drivers/net/atlantic/atl_ethdev.h index 53fbc0a17bd2..acb3066c189f 100644 --- a/drivers/net/atlantic/atl_ethdev.h +++ b/drivers/net/atlantic/atl_ethdev.h @@ -12,6 +12,10 @@ #define ATL_DEV_PRIVATE_TO_HW(adapter) \ (&((struct atl_adapter *)adapter)->hw) +#define ATL_DEV_TO_ADAPTER(dev) \ + ((struct atl_adapter *)(dev)->data->dev_private) + + /* * Structure to store private data for each driver instance (for each port). */ @@ -23,9 +27,24 @@ struct atl_adapter { /* * RX/TX function prototypes */ +void atl_rx_queue_release(void *rxq); + +int atl_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 atl_rx_init(struct rte_eth_dev *dev); int atl_tx_init(struct rte_eth_dev *dev); +int atl_start_queues(struct rte_eth_dev *dev); +int atl_stop_queues(struct rte_eth_dev *dev); +void atl_free_queues(struct rte_eth_dev *dev); + +int atl_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id); +int atl_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id); + + uint16_t atl_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts); diff --git a/drivers/net/atlantic/atl_rxtx.c b/drivers/net/atlantic/atl_rxtx.c index 0fbd93038075..0ce41aaf1780 100644 --- a/drivers/net/atlantic/atl_rxtx.c +++ b/drivers/net/atlantic/atl_rxtx.c @@ -2,7 +2,146 @@ * Copyright(c) 2018 Aquantia Corporation */ +#include +#include + #include "atl_ethdev.h" +#include "atl_hw_regs.h" + +#include "atl_logs.h" +#include "hw_atl/hw_atl_llh.h" +#include "hw_atl/hw_atl_b0.h" +#include "hw_atl/hw_atl_b0_internal.h" + +/** + * Structure associated with each descriptor of the RX ring of a RX queue. + */ +struct atl_rx_entry { + struct rte_mbuf *mbuf; +}; + +/** + * Structure associated with each RX queue. + */ +struct atl_rx_queue { + struct rte_mempool *mb_pool; + struct hw_atl_rxd_s *hw_ring; + uint64_t hw_ring_phys_addr; + struct atl_rx_entry *sw_ring; + uint16_t nb_rx_desc; + uint16_t rx_tail; + uint16_t nb_rx_hold; + uint16_t rx_free_thresh; + uint16_t queue_id; + uint16_t port_id; + uint16_t buff_size; + bool l3_csum_enabled; + bool l4_csum_enabled; +}; + +static inline void +atl_reset_rx_queue(struct atl_rx_queue *rxq) +{ + struct hw_atl_rxd_s *rxd = NULL; + int i; + + PMD_INIT_FUNC_TRACE(); + + for (i = 0; i < rxq->nb_rx_desc; i++) { + rxd = (struct hw_atl_rxd_s *)&rxq->hw_ring[i]; + rxd->buf_addr = 0; + rxd->hdr_addr = 0; + } + + rxq->rx_tail = 0; +} + +int +atl_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) +{ + struct atl_rx_queue *rxq; + const struct rte_memzone *mz; + + PMD_INIT_FUNC_TRACE(); + + /* make sure a valid number of descriptors have been requested */ + if (nb_rx_desc < AQ_HW_MIN_RX_RING_SIZE || + nb_rx_desc > AQ_HW_MAX_RX_RING_SIZE) { + PMD_INIT_LOG(ERR, "Number of Rx descriptors must be " + "less than or equal to %d, " + "greater than or equal to %d", AQ_HW_MAX_RX_RING_SIZE, + AQ_HW_MIN_RX_RING_SIZE); + return -EINVAL; + } + + /* + * if this queue existed already, free the associated memory. The + * queue cannot be reused in case we need to allocate memory on + * different socket than was previously used. + */ + if (dev->data->rx_queues[rx_queue_id] != NULL) { + atl_rx_queue_release(dev->data->rx_queues[rx_queue_id]); + dev->data->rx_queues[rx_queue_id] = NULL; + } + + /* allocate memory for the queue structure */ + rxq = rte_zmalloc_socket("atlantic Rx queue", sizeof(*rxq), + RTE_CACHE_LINE_SIZE, socket_id); + if (rxq == NULL) { + PMD_INIT_LOG(ERR, "Cannot allocate queue structure"); + return -ENOMEM; + } + + /* setup queue */ + rxq->mb_pool = mb_pool; + rxq->nb_rx_desc = nb_rx_desc; + rxq->port_id = dev->data->port_id; + rxq->queue_id = rx_queue_id; + rxq->rx_free_thresh = rx_conf->rx_free_thresh; + + rxq->l3_csum_enabled = dev->data->dev_conf.rxmode.offloads & + DEV_RX_OFFLOAD_IPV4_CKSUM; + rxq->l4_csum_enabled = dev->data->dev_conf.rxmode.offloads & + (DEV_RX_OFFLOAD_UDP_CKSUM | DEV_RX_OFFLOAD_TCP_CKSUM); + if (dev->data->dev_conf.rxmode.offloads & DEV_RX_OFFLOAD_KEEP_CRC) + PMD_DRV_LOG(ERR, "PMD does not support KEEP_CRC offload"); + + /* allocate memory for the software ring */ + rxq->sw_ring = rte_zmalloc_socket("atlantic sw rx ring", + nb_rx_desc * sizeof(struct atl_rx_entry), + RTE_CACHE_LINE_SIZE, socket_id); + if (rxq->sw_ring == NULL) { + PMD_INIT_LOG(ERR, "Cannot allocate software ring"); + rte_free(rxq); + return -ENOMEM; + } + + /* + * allocate memory for the hardware descriptor ring. A memzone large + * enough to hold the maximum ring size is requested to allow for + * resizing in later calls to the queue setup function. + */ + mz = rte_eth_dma_zone_reserve(dev, "rx hw_ring", rx_queue_id, + HW_ATL_B0_MAX_RXD * + sizeof(struct hw_atl_rxd_s), + 128, socket_id); + if (mz == NULL) { + PMD_INIT_LOG(ERR, "Cannot allocate hardware ring"); + rte_free(rxq->sw_ring); + rte_free(rxq); + return -ENOMEM; + } + rxq->hw_ring = mz->addr; + rxq->hw_ring_phys_addr = mz->iova; + + atl_reset_rx_queue(rxq); + + dev->data->rx_queues[rx_queue_id] = rxq; + return 0; +} int atl_tx_init(struct rte_eth_dev *eth_dev __rte_unused) @@ -11,11 +150,169 @@ atl_tx_init(struct rte_eth_dev *eth_dev __rte_unused) } int -atl_rx_init(struct rte_eth_dev *eth_dev __rte_unused) +atl_rx_init(struct rte_eth_dev *eth_dev) +{ + struct aq_hw_s *hw = ATL_DEV_PRIVATE_TO_HW(eth_dev->data->dev_private); + struct atl_rx_queue *rxq; + uint64_t base_addr = 0; + int i = 0; + int err = 0; + + PMD_INIT_FUNC_TRACE(); + + for (i = 0; i < eth_dev->data->nb_rx_queues; i++) { + rxq = eth_dev->data->rx_queues[i]; + base_addr = rxq->hw_ring_phys_addr; + + /* Take requested pool mbuf size and adapt + * descriptor buffer to best fit + */ + int buff_size = rte_pktmbuf_data_room_size(rxq->mb_pool) - + RTE_PKTMBUF_HEADROOM; + + buff_size = RTE_ALIGN_FLOOR(buff_size, 1024); + if (buff_size > HW_ATL_B0_RXD_BUF_SIZE_MAX) { + PMD_INIT_LOG(WARNING, + "queue %d: mem pool buff size is too big\n", + rxq->queue_id); + buff_size = HW_ATL_B0_RXD_BUF_SIZE_MAX; + } + if (buff_size < 1024) { + PMD_INIT_LOG(ERR, + "queue %d: mem pool buff size is too small\n", + rxq->queue_id); + return -EINVAL; + } + rxq->buff_size = buff_size; + + err = hw_atl_b0_hw_ring_rx_init(hw, base_addr, rxq->queue_id, + rxq->nb_rx_desc, buff_size, 0, + rxq->port_id); + } + + return err; +} + +static int +atl_alloc_rx_queue_mbufs(struct atl_rx_queue *rxq) +{ + struct atl_rx_entry *rx_entry = rxq->sw_ring; + struct hw_atl_rxd_s *rxd; + uint64_t dma_addr = 0; + uint32_t i = 0; + + PMD_INIT_FUNC_TRACE(); + + /* fill Rx ring */ + for (i = 0; i < rxq->nb_rx_desc; i++) { + struct rte_mbuf *mbuf = rte_mbuf_raw_alloc(rxq->mb_pool); + + if (mbuf == NULL) { + PMD_INIT_LOG(ERR, "mbuf alloca failed for rx queue %u", + (unsigned int)rxq->queue_id); + return -ENOMEM; + } + + mbuf->data_off = RTE_PKTMBUF_HEADROOM; + mbuf->port = rxq->port_id; + + dma_addr = rte_cpu_to_le_64(rte_mbuf_data_iova_default(mbuf)); + rxd = (struct hw_atl_rxd_s *)&rxq->hw_ring[i]; + rxd->buf_addr = dma_addr; + rxd->hdr_addr = 0; + rx_entry[i].mbuf = mbuf; + } + + return 0; +} + +static void +atl_rx_queue_release_mbufs(struct atl_rx_queue *rxq) +{ + int i; + + PMD_INIT_FUNC_TRACE(); + + 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; + } + } + } +} + +int +atl_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id) { + struct aq_hw_s *hw = ATL_DEV_PRIVATE_TO_HW(dev->data->dev_private); + struct atl_rx_queue *rxq = NULL; + + PMD_INIT_FUNC_TRACE(); + + if (rx_queue_id < dev->data->nb_rx_queues) { + rxq = dev->data->rx_queues[rx_queue_id]; + + if (atl_alloc_rx_queue_mbufs(rxq) != 0) { + PMD_INIT_LOG(ERR, "Allocate mbufs for queue %d failed", + rx_queue_id); + return -1; + } + + hw_atl_b0_hw_ring_rx_start(hw, rx_queue_id); + + rte_wmb(); + hw_atl_reg_rx_dma_desc_tail_ptr_set(hw, rxq->nb_rx_desc - 1, + rx_queue_id); + dev->data->rx_queue_state[rx_queue_id] = + RTE_ETH_QUEUE_STATE_STARTED; + } else { + return -1; + } + return 0; } +int +atl_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id) +{ + struct aq_hw_s *hw = ATL_DEV_PRIVATE_TO_HW(dev->data->dev_private); + struct atl_rx_queue *rxq = NULL; + + PMD_INIT_FUNC_TRACE(); + + if (rx_queue_id < dev->data->nb_rx_queues) { + rxq = dev->data->rx_queues[rx_queue_id]; + + hw_atl_b0_hw_ring_rx_stop(hw, rx_queue_id); + + atl_rx_queue_release_mbufs(rxq); + atl_reset_rx_queue(rxq); + + dev->data->rx_queue_state[rx_queue_id] = + RTE_ETH_QUEUE_STATE_STOPPED; + } else { + return -1; + } + + return 0; +} + +void +atl_rx_queue_release(void *rx_queue) +{ + PMD_INIT_FUNC_TRACE(); + + if (rx_queue != NULL) { + struct atl_rx_queue *rxq = (struct atl_rx_queue *)rx_queue; + + atl_rx_queue_release_mbufs(rxq); + rte_free(rxq->sw_ring); + rte_free(rxq); + } +} + uint16_t atl_prep_pkts(void *tx_queue __rte_unused, struct rte_mbuf **tx_pkts __rte_unused, @@ -24,14 +321,323 @@ atl_prep_pkts(void *tx_queue __rte_unused, return 0; } -uint16_t -atl_recv_pkts(void *rx_queue __rte_unused, - struct rte_mbuf **rx_pkts __rte_unused, - uint16_t nb_pkts __rte_unused) +void +atl_free_queues(struct rte_eth_dev *dev) +{ + unsigned int i; + + PMD_INIT_FUNC_TRACE(); + + for (i = 0; i < dev->data->nb_rx_queues; i++) { + atl_rx_queue_release(dev->data->rx_queues[i]); + dev->data->rx_queues[i] = 0; + } + dev->data->nb_rx_queues = 0; +} + +int +atl_start_queues(struct rte_eth_dev *dev) { + int i; + + PMD_INIT_FUNC_TRACE(); + + for (i = 0; i < dev->data->nb_rx_queues; i++) { + if (atl_rx_queue_start(dev, i) != 0) { + PMD_DRV_LOG(ERR, "Start Rx queue %d failed", i); + return -1; + } + } + return 0; } +int +atl_stop_queues(struct rte_eth_dev *dev) +{ + int i; + + PMD_INIT_FUNC_TRACE(); + + for (i = 0; i < dev->data->nb_rx_queues; i++) { + if (atl_rx_queue_stop(dev, i) != 0) { + PMD_DRV_LOG(ERR, "Stop Rx queue %d failed", i); + return -1; + } + } + + return 0; +} + +static uint64_t +atl_desc_to_offload_flags(struct atl_rx_queue *rxq, + struct hw_atl_rxd_wb_s *rxd_wb) +{ + uint64_t mbuf_flags = 0; + + PMD_INIT_FUNC_TRACE(); + + /* IPv4 ? */ + if (rxq->l3_csum_enabled && ((rxd_wb->pkt_type & 0x3) == 0)) { + /* IPv4 csum error ? */ + if (rxd_wb->rx_stat & BIT(1)) + mbuf_flags |= PKT_RX_IP_CKSUM_BAD; + else + mbuf_flags |= PKT_RX_IP_CKSUM_GOOD; + } else { + mbuf_flags |= PKT_RX_IP_CKSUM_UNKNOWN; + } + + /* CSUM calculated ? */ + if (rxq->l4_csum_enabled && (rxd_wb->rx_stat & BIT(3))) { + if (rxd_wb->rx_stat & BIT(2)) + mbuf_flags |= PKT_RX_L4_CKSUM_BAD; + else + mbuf_flags |= PKT_RX_L4_CKSUM_GOOD; + } else { + mbuf_flags |= PKT_RX_L4_CKSUM_UNKNOWN; + } + + return mbuf_flags; +} + +static uint32_t +atl_desc_to_pkt_type(struct hw_atl_rxd_wb_s *rxd_wb) +{ + uint32_t type = RTE_PTYPE_UNKNOWN; + uint16_t l2_l3_type = rxd_wb->pkt_type & 0x3; + uint16_t l4_type = (rxd_wb->pkt_type & 0x1C) >> 2; + + switch (l2_l3_type) { + case 0: + type = RTE_PTYPE_L3_IPV4; + break; + case 1: + type = RTE_PTYPE_L3_IPV6; + break; + case 2: + type = RTE_PTYPE_L2_ETHER; + break; + case 3: + type = RTE_PTYPE_L2_ETHER_ARP; + break; + } + + switch (l4_type) { + case 0: + type |= RTE_PTYPE_L4_TCP; + break; + case 1: + type |= RTE_PTYPE_L4_UDP; + break; + case 2: + type |= RTE_PTYPE_L4_SCTP; + break; + case 3: + type |= RTE_PTYPE_L4_ICMP; + break; + } + + if (rxd_wb->pkt_type & BIT(5)) + type |= RTE_PTYPE_L2_ETHER_VLAN; + + return type; +} + +uint16_t +atl_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts, uint16_t nb_pkts) +{ + struct atl_rx_queue *rxq = (struct atl_rx_queue *)rx_queue; + struct rte_eth_dev *dev = &rte_eth_devices[rxq->port_id]; + struct atl_adapter *adapter = + ATL_DEV_TO_ADAPTER(&rte_eth_devices[rxq->port_id]); + struct aq_hw_s *hw = ATL_DEV_PRIVATE_TO_HW(adapter); + struct atl_rx_entry *sw_ring = rxq->sw_ring; + + struct rte_mbuf *new_mbuf; + struct rte_mbuf *rx_mbuf, *rx_mbuf_prev, *rx_mbuf_first; + struct atl_rx_entry *rx_entry; + uint16_t nb_rx = 0; + uint16_t nb_hold = 0; + struct hw_atl_rxd_wb_s rxd_wb; + struct hw_atl_rxd_s *rxd = NULL; + uint16_t tail = rxq->rx_tail; + uint64_t dma_addr; + uint16_t pkt_len = 0; + + while (nb_rx < nb_pkts) { + uint16_t eop_tail = tail; + + rxd = (struct hw_atl_rxd_s *)&rxq->hw_ring[tail]; + rxd_wb = *(struct hw_atl_rxd_wb_s *)rxd; + + if (!rxd_wb.dd) { /* RxD is not done */ + break; + } + + PMD_RX_LOG(ERR, "port_id=%u queue_id=%u tail=%u " + "eop=0x%x pkt_len=%u hash=0x%x hash_type=0x%x", + (unsigned int)rxq->port_id, + (unsigned int)rxq->queue_id, + (unsigned int)tail, (unsigned int)rxd_wb.eop, + (unsigned int)rte_le_to_cpu_16(rxd_wb.pkt_len), + rxd_wb.rss_hash, rxd_wb.rss_type); + + /* RxD is not done */ + if (!rxd_wb.eop) { + while (true) { + struct hw_atl_rxd_wb_s *eop_rxwbd; + + eop_tail = (eop_tail + 1) % rxq->nb_rx_desc; + eop_rxwbd = (struct hw_atl_rxd_wb_s *) + &rxq->hw_ring[eop_tail]; + if (!eop_rxwbd->dd) { + /* no EOP received yet */ + eop_tail = tail; + break; + } + if (eop_rxwbd->dd && eop_rxwbd->eop) + break; + } + /* No EOP in ring */ + if (eop_tail == tail) + break; + } + rx_mbuf_prev = NULL; + rx_mbuf_first = NULL; + + /* Run through packet segments */ + while (true) { + new_mbuf = rte_mbuf_raw_alloc(rxq->mb_pool); + if (new_mbuf == NULL) { + PMD_RX_LOG(ERR, + "RX mbuf alloc failed port_id=%u " + "queue_id=%u", (unsigned int)rxq->port_id, + (unsigned int)rxq->queue_id); + dev->data->rx_mbuf_alloc_failed++; + goto err_stop; + } + + nb_hold++; + rx_entry = &sw_ring[tail]; + + rx_mbuf = rx_entry->mbuf; + rx_entry->mbuf = new_mbuf; + dma_addr = rte_cpu_to_le_64( + rte_mbuf_data_iova_default(new_mbuf)); + + /* setup RX descriptor */ + rxd->hdr_addr = 0; + rxd->buf_addr = dma_addr; + + /* + * Initialize the returned mbuf. + * 1) setup generic mbuf fields: + * - number of segments, + * - next segment, + * - packet length, + * - RX port identifier. + * 2) integrate hardware offload data, if any: + * < - RSS flag & hash, + * - IP checksum flag, + * - VLAN TCI, if any, + * - error flags. + */ + pkt_len = (uint16_t)rte_le_to_cpu_16(rxd_wb.pkt_len); + rx_mbuf->data_off = RTE_PKTMBUF_HEADROOM; + rte_prefetch1((char *)rx_mbuf->buf_addr + + rx_mbuf->data_off); + rx_mbuf->nb_segs = 0; + rx_mbuf->next = NULL; + rx_mbuf->pkt_len = pkt_len; + rx_mbuf->data_len = pkt_len; + if (rxd_wb.eop) { + u16 remainder_len = pkt_len % rxq->buff_size; + if (!remainder_len) + remainder_len = rxq->buff_size; + rx_mbuf->data_len = remainder_len; + } else { + rx_mbuf->data_len = pkt_len > rxq->buff_size ? + rxq->buff_size : pkt_len; + } + rx_mbuf->port = rxq->port_id; + + rx_mbuf->hash.rss = rxd_wb.rss_hash; + + rx_mbuf->vlan_tci = rxd_wb.vlan; + + rx_mbuf->ol_flags = + atl_desc_to_offload_flags(rxq, &rxd_wb); + rx_mbuf->packet_type = atl_desc_to_pkt_type(&rxd_wb); + + if (!rx_mbuf_first) + rx_mbuf_first = rx_mbuf; + rx_mbuf_first->nb_segs++; + + if (rx_mbuf_prev) + rx_mbuf_prev->next = rx_mbuf; + rx_mbuf_prev = rx_mbuf; + + tail = (tail + 1) % rxq->nb_rx_desc; + /* Prefetch next mbufs */ + rte_prefetch0(sw_ring[tail].mbuf); + if ((tail & 0x3) == 0) { + rte_prefetch0(&sw_ring[tail]); + rte_prefetch0(&sw_ring[tail]); + } + + /* filled mbuf_first */ + if (rxd_wb.eop) + break; + rxd = (struct hw_atl_rxd_s *)&rxq->hw_ring[tail]; + rxd_wb = *(struct hw_atl_rxd_wb_s *)rxd; + }; + + /* + * Store the mbuf address into the next entry of the array + * of returned packets. + */ + rx_pkts[nb_rx++] = rx_mbuf_first; + + PMD_RX_LOG(ERR, "add mbuf segs=%d pkt_len=%d", + rx_mbuf_first->nb_segs, + rx_mbuf_first->pkt_len); + } + +err_stop: + + rxq->rx_tail = tail; + + /* + * If the number of free RX descriptors is greater than the RX free + * threshold of the queue, advance the Receive Descriptor Tail (RDT) + * register. + * Update the RDT with the value of the last processed RX descriptor + * minus 1, to guarantee that the RDT register is never equal to the + * RDH register, which creates a "full" ring situtation from the + * hardware point of view... + */ + nb_hold = (uint16_t)(nb_hold + rxq->nb_rx_hold); + if (nb_hold > rxq->rx_free_thresh) { + PMD_RX_LOG(ERR, "port_id=%u queue_id=%u rx_tail=%u " + "nb_hold=%u nb_rx=%u", + (unsigned int)rxq->port_id, (unsigned int)rxq->queue_id, + (unsigned int)tail, (unsigned int)nb_hold, + (unsigned int)nb_rx); + tail = (uint16_t)((tail == 0) ? + (rxq->nb_rx_desc - 1) : (tail - 1)); + + hw_atl_reg_rx_dma_desc_tail_ptr_set(hw, tail, rxq->queue_id); + + nb_hold = 0; + } + + rxq->nb_rx_hold = nb_hold; + + return nb_rx; +} + + uint16_t atl_xmit_pkts(void *tx_queue __rte_unused, struct rte_mbuf **tx_pkts __rte_unused, -- 2.7.4