diff options
Diffstat (limited to 'drivers/net/qede/qede_rxtx.c')
| -rw-r--r-- | drivers/net/qede/qede_rxtx.c | 88 |
1 files changed, 73 insertions, 15 deletions
diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c index ffe196a6..cdb85c21 100644 --- a/drivers/net/qede/qede_rxtx.c +++ b/drivers/net/qede/qede_rxtx.c @@ -37,6 +37,49 @@ static inline int qede_alloc_rx_buffer(struct qede_rx_queue *rxq) return 0; } +/* Criterias for calculating Rx buffer size - + * 1) rx_buf_size should not exceed the size of mbuf + * 2) In scattered_rx mode - minimum rx_buf_size should be + * (MTU + Maximum L2 Header Size + 2) / ETH_RX_MAX_BUFF_PER_PKT + * 3) In regular mode - minimum rx_buf_size should be + * (MTU + Maximum L2 Header Size + 2) + * In above cases +2 corrosponds to 2 bytes padding in front of L2 + * header. + * 4) rx_buf_size should be cacheline-size aligned. So considering + * criteria 1, we need to adjust the size to floor instead of ceil, + * so that we don't exceed mbuf size while ceiling rx_buf_size. + */ +int +qede_calc_rx_buf_size(struct rte_eth_dev *dev, uint16_t mbufsz, + uint16_t max_frame_size) +{ + struct qede_dev *qdev = QEDE_INIT_QDEV(dev); + struct ecore_dev *edev = QEDE_INIT_EDEV(qdev); + int rx_buf_size; + + if (dev->data->scattered_rx) { + /* per HW limitation, only ETH_RX_MAX_BUFF_PER_PKT number of + * bufferes can be used for single packet. So need to make sure + * mbuf size is sufficient enough for this. + */ + if ((mbufsz * ETH_RX_MAX_BUFF_PER_PKT) < + (max_frame_size + QEDE_ETH_OVERHEAD)) { + DP_ERR(edev, "mbuf %d size is not enough to hold max fragments (%d) for max rx packet length (%d)\n", + mbufsz, ETH_RX_MAX_BUFF_PER_PKT, max_frame_size); + return -EINVAL; + } + + rx_buf_size = RTE_MAX(mbufsz, + (max_frame_size + QEDE_ETH_OVERHEAD) / + ETH_RX_MAX_BUFF_PER_PKT); + } else { + rx_buf_size = max_frame_size + QEDE_ETH_OVERHEAD; + } + + /* Align to cache-line size if needed */ + return QEDE_FLOOR_TO_CACHE_LINE_SIZE(rx_buf_size); +} + int qede_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx, uint16_t nb_desc, unsigned int socket_id, @@ -87,6 +130,9 @@ qede_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx, /* Fix up RX buffer size */ bufsz = (uint16_t)rte_pktmbuf_data_room_size(mp) - RTE_PKTMBUF_HEADROOM; + /* cache align the mbuf size to simplfy rx_buf_size calculation */ + bufsz = QEDE_FLOOR_TO_CACHE_LINE_SIZE(bufsz); + if ((rxmode->enable_scatter) || (max_rx_pkt_len + QEDE_ETH_OVERHEAD) > bufsz) { if (!dev->data->scattered_rx) { @@ -95,13 +141,13 @@ qede_rx_queue_setup(struct rte_eth_dev *dev, uint16_t queue_idx, } } - if (dev->data->scattered_rx) - rxq->rx_buf_size = bufsz + ETHER_HDR_LEN + - ETHER_CRC_LEN + QEDE_ETH_OVERHEAD; - else - rxq->rx_buf_size = max_rx_pkt_len + QEDE_ETH_OVERHEAD; - /* Align to cache-line size if needed */ - rxq->rx_buf_size = QEDE_CEIL_TO_CACHE_LINE_SIZE(rxq->rx_buf_size); + rc = qede_calc_rx_buf_size(dev, bufsz, max_rx_pkt_len); + if (rc < 0) { + rte_free(rxq); + return rc; + } + + rxq->rx_buf_size = rc; DP_INFO(edev, "mtu %u mbufsz %u bd_max_bytes %u scatter_mode %d\n", qdev->mtu, bufsz, rxq->rx_buf_size, dev->data->scattered_rx); @@ -192,12 +238,13 @@ static void qede_rx_queue_release_mbufs(struct qede_rx_queue *rxq) void qede_rx_queue_release(void *rx_queue) { struct qede_rx_queue *rxq = rx_queue; - struct qede_dev *qdev = rxq->qdev; - struct ecore_dev *edev = QEDE_INIT_EDEV(qdev); - - PMD_INIT_FUNC_TRACE(edev); + struct qede_dev *qdev; + struct ecore_dev *edev; if (rxq) { + qdev = rxq->qdev; + edev = QEDE_INIT_EDEV(qdev); + PMD_INIT_FUNC_TRACE(edev); qede_rx_queue_release_mbufs(rxq); qdev->ops->common->chain_free(edev, &rxq->rx_bd_ring); qdev->ops->common->chain_free(edev, &rxq->rx_comp_ring); @@ -356,12 +403,13 @@ static void qede_tx_queue_release_mbufs(struct qede_tx_queue *txq) void qede_tx_queue_release(void *tx_queue) { struct qede_tx_queue *txq = tx_queue; - struct qede_dev *qdev = txq->qdev; - struct ecore_dev *edev = QEDE_INIT_EDEV(qdev); - - PMD_INIT_FUNC_TRACE(edev); + struct qede_dev *qdev; + struct ecore_dev *edev; if (txq) { + qdev = txq->qdev; + edev = QEDE_INIT_EDEV(qdev); + PMD_INIT_FUNC_TRACE(edev); qede_tx_queue_release_mbufs(txq); qdev->ops->common->chain_free(edev, &txq->tx_pbl); rte_free(txq->sw_tx_ring); @@ -1716,6 +1764,16 @@ qede_xmit_prep_pkts(__rte_unused void *p_txq, struct rte_mbuf **tx_pkts, } } if (ol_flags & QEDE_TX_OFFLOAD_NOTSUP_MASK) { + /* We support only limited tunnel protocols */ + if (ol_flags & PKT_TX_TUNNEL_MASK) { + uint64_t temp; + + temp = ol_flags & PKT_TX_TUNNEL_MASK; + if (temp == PKT_TX_TUNNEL_VXLAN || + temp == PKT_TX_TUNNEL_MPLSINUDP) + break; + } + rte_errno = -ENOTSUP; break; } |