From 11c378b199c662a133fe61482b06f870a56a4c5b Mon Sep 17 00:00:00 2001 From: Intel Date: Tue, 23 Jul 2013 00:00:00 +0200 Subject: [PATCH] ixgbe: check DD bit for specific RX descriptor Signed-off-by: Intel --- lib/librte_pmd_ixgbe/ixgbe_ethdev.c | 1 + lib/librte_pmd_ixgbe/ixgbe_ethdev.h | 2 ++ lib/librte_pmd_ixgbe/ixgbe_rxtx.c | 17 +++++++++++++++++ 3 files changed, 20 insertions(+) diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c index 1434ac9dc3..e26d5b9351 100644 --- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.c +++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.c @@ -244,6 +244,7 @@ static struct eth_dev_ops ixgbe_eth_dev_ops = { .rx_queue_setup = ixgbe_dev_rx_queue_setup, .rx_queue_release = ixgbe_dev_rx_queue_release, .rx_queue_count = ixgbe_dev_rx_queue_count, + .rx_descriptor_done = ixgbe_dev_rx_descriptor_done, .tx_queue_setup = ixgbe_dev_tx_queue_setup, .tx_queue_release = ixgbe_dev_tx_queue_release, .dev_led_on = ixgbe_dev_led_on, diff --git a/lib/librte_pmd_ixgbe/ixgbe_ethdev.h b/lib/librte_pmd_ixgbe/ixgbe_ethdev.h index e9ddfc2ef6..260622a63b 100644 --- a/lib/librte_pmd_ixgbe/ixgbe_ethdev.h +++ b/lib/librte_pmd_ixgbe/ixgbe_ethdev.h @@ -175,6 +175,8 @@ int ixgbe_dev_tx_queue_setup(struct rte_eth_dev *dev, uint16_t tx_queue_id, uint32_t ixgbe_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id); +int ixgbe_dev_rx_descriptor_done(void *rx_queue, uint16_t offset); + int ixgbe_dev_rx_init(struct rte_eth_dev *dev); void ixgbe_dev_tx_init(struct rte_eth_dev *dev); diff --git a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c index 8e7cb2693a..3039faaa66 100644 --- a/lib/librte_pmd_ixgbe/ixgbe_rxtx.c +++ b/lib/librte_pmd_ixgbe/ixgbe_rxtx.c @@ -2299,6 +2299,23 @@ ixgbe_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id) return desc; } +int +ixgbe_dev_rx_descriptor_done(void *rx_queue, uint16_t offset) +{ + volatile union ixgbe_adv_rx_desc *rxdp; + struct igb_rx_queue *rxq = rx_queue; + uint32_t desc; + + if (unlikely(offset >= rxq->nb_rx_desc)) + return 0; + desc = rxq->rx_tail + offset; + if (desc >= rxq->nb_rx_desc) + desc -= rxq->nb_rx_desc; + + rxdp = &rxq->rx_ring[desc]; + return !!(rxdp->wb.upper.status_error & IXGBE_RXDADV_STAT_DD); +} + void ixgbe_dev_clear_queues(struct rte_eth_dev *dev) { -- 2.20.1