From mboxrd@z Thu Jan 1 00:00:00 1970 From: Helin Zhang Subject: [PATCH] i40evf: fix of supporting jumbo frame Date: Wed, 22 Apr 2015 15:18:37 +0800 Message-ID: <1429687117-3421-1-git-send-email-helin.zhang@intel.com> To: dev-VfR2kkLFssw@public.gmane.org Return-path: List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org Sender: "dev" It wouldn't check the configured maximum packet length, and then the scattered receiving function wouldn't be selected at all even if it wants to receive a jumbo frame. The fix is to select the correct RX function according to the configurations. Signed-off-by: Helin Zhang --- lib/librte_pmd_i40e/i40e_ethdev.h | 2 + lib/librte_pmd_i40e/i40e_ethdev_vf.c | 64 ++++++++++++++++++++++++++++++--- lib/librte_pmd_i40e/i40e_rxtx.c | 1 - 3 files changed, 60 insertions(+), 7 deletions(-) diff --git a/lib/librte_pmd_i40e/i40e_ethdev.h b/lib/librte_pmd_i40e/i40e_ethdev.h index b9bed5a..7ecd249 100644 --- a/lib/librte_pmd_i40e/i40e_ethdev.h +++ b/lib/librte_pmd_i40e/i40e_ethdev.h @@ -36,6 +36,8 @@ #include +#define I40E_VLAN_TAG_SIZE 4 + #define I40E_AQ_LEN 32 #define I40E_AQ_BUF_SZ 4096 /* Number of queues per TC should be one of 1, 2, 4, 8, 16, 32, 64 */ diff --git a/lib/librte_pmd_i40e/i40e_ethdev_vf.c b/lib/librte_pmd_i40e/i40e_ethdev_vf.c index 4581c5b..718387f 100644 --- a/lib/librte_pmd_i40e/i40e_ethdev_vf.c +++ b/lib/librte_pmd_i40e/i40e_ethdev_vf.c @@ -1419,23 +1419,75 @@ i40evf_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vlan_id, int on) } static int +i40evf_rxq_init(struct rte_eth_dev *dev, struct i40e_rx_queue *rxq) +{ + struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); + struct rte_eth_dev_data *dev_data = dev->data; + struct rte_pktmbuf_pool_private *mbp_priv; + uint16_t buf_size, len; + + rxq->qrx_tail = hw->hw_addr + I40E_QRX_TAIL1(rxq->queue_id); + I40E_PCI_REG_WRITE(rxq->qrx_tail, rxq->nb_rx_desc - 1); + I40EVF_WRITE_FLUSH(hw); + + /* Calculate the maximum packet length allowed */ + mbp_priv = rte_mempool_get_priv(rxq->mp); + buf_size = (uint16_t)(mbp_priv->mbuf_data_room_size - + RTE_PKTMBUF_HEADROOM); + rxq->hs_mode = i40e_header_split_none; + rxq->rx_hdr_len = 0; + rxq->rx_buf_len = RTE_ALIGN(buf_size, (1 << I40E_RXQ_CTX_DBUFF_SHIFT)); + len = rxq->rx_buf_len * I40E_MAX_CHAINED_RX_BUFFERS; + rxq->max_pkt_len = RTE_MIN(len, + dev_data->dev_conf.rxmode.max_rx_pkt_len); + + /** + * Check the if the jumbo frame and maximum packet length are + * set correctly + */ + if (dev_data->dev_conf.rxmode.jumbo_frame == 1) { + if (rxq->max_pkt_len <= ETHER_MAX_LEN || + rxq->max_pkt_len > I40E_FRAME_SIZE_MAX) { + PMD_DRV_LOG(ERR, "maximum packet length must be " + "larger than %u and smaller than %u, as jumbo " + "frame is enabled", (uint32_t)ETHER_MAX_LEN, + (uint32_t)I40E_FRAME_SIZE_MAX); + return I40E_ERR_CONFIG; + } + } else { + if (rxq->max_pkt_len < ETHER_MIN_LEN || + rxq->max_pkt_len > ETHER_MAX_LEN) { + PMD_DRV_LOG(ERR, "maximum packet length must be " + "larger than %u and smaller than %u, as jumbo " + "frame is disabled", (uint32_t)ETHER_MIN_LEN, + (uint32_t)ETHER_MAX_LEN); + return I40E_ERR_CONFIG; + } + } + + if (dev_data->dev_conf.rxmode.enable_scatter + || (rxq->max_pkt_len + 2 * I40E_VLAN_TAG_SIZE) > buf_size) { + dev_data->scattered_rx = 1; + dev->rx_pkt_burst = i40e_recv_scattered_pkts; + } + + return 0; +} + +static int i40evf_rx_init(struct rte_eth_dev *dev) { struct i40e_vf *vf = I40EVF_DEV_PRIVATE_TO_VF(dev->data->dev_private); uint16_t i; struct i40e_rx_queue **rxq = (struct i40e_rx_queue **)dev->data->rx_queues; - struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private); i40evf_config_rss(vf); for (i = 0; i < dev->data->nb_rx_queues; i++) { - rxq[i]->qrx_tail = hw->hw_addr + I40E_QRX_TAIL1(i); - I40E_PCI_REG_WRITE(rxq[i]->qrx_tail, rxq[i]->nb_rx_desc - 1); + if (i40evf_rxq_init(dev, rxq[i]) < 0) + return -EFAULT; } - /* Flush the operation to write registers */ - I40EVF_WRITE_FLUSH(hw); - return 0; } diff --git a/lib/librte_pmd_i40e/i40e_rxtx.c b/lib/librte_pmd_i40e/i40e_rxtx.c index abe68f4..b13f298 100644 --- a/lib/librte_pmd_i40e/i40e_rxtx.c +++ b/lib/librte_pmd_i40e/i40e_rxtx.c @@ -64,7 +64,6 @@ #define DEFAULT_TX_FREE_THRESH 32 #define I40E_MAX_PKT_TYPE 256 -#define I40E_VLAN_TAG_SIZE 4 #define I40E_TX_MAX_BURST 32 #define I40E_DMA_MEM_ALIGN 4096 -- 1.7.7