net/ice: support descriptor ops

Add below ops,
rx_descriptor_status
tx_descriptor_status

Signed-off-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
Signed-off-by: Qiming Yang <qiming.yang@intel.com>
Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
Signed-off-by: Jingjing Wu <jingjing.wu@intel.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>

diff --git a/doc/guides/nics/features/ice.ini b/doc/guides/nics/features/ice.ini
index efa5601..8b1e22e 100644 (file)
--- a/doc/guides/nics/features/ice.ini
+++ b/doc/guides/nics/features/ice.ini
@@ -26,6 +26,8 @@ QinQ offload         = Y
 L3 checksum offload  = Y
 L4 checksum offload  = Y
 Packet type parsing  = Y
+Rx descriptor status = Y
+Tx descriptor status = Y
 Basic stats          = Y
 Extended stats       = Y
 FW version           = Y

diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index 5fb70ee..0a81e04 100644 (file)
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -112,6 +112,8 @@ static const struct eth_dev_ops ice_eth_dev_ops = {
        .get_eeprom_length            = ice_get_eeprom_length,
        .get_eeprom                   = ice_get_eeprom,
        .rx_queue_count               = ice_rx_queue_count,
+       .rx_descriptor_status         = ice_rx_descriptor_status,
+       .tx_descriptor_status         = ice_tx_descriptor_status,
        .stats_get                    = ice_stats_get,
        .stats_reset                  = ice_stats_reset,
        .xstats_get                   = ice_xstats_get,

diff --git a/drivers/net/ice/ice_rxtx.c b/drivers/net/ice/ice_rxtx.c
index f7637d2..78e40fe 100644 (file)
--- a/drivers/net/ice/ice_rxtx.c
+++ b/drivers/net/ice/ice_rxtx.c
@@ -1490,6 +1490,64 @@ ice_dev_supported_ptypes_get(struct rte_eth_dev *dev)
        return NULL;
 }
 
+int
+ice_rx_descriptor_status(void *rx_queue, uint16_t offset)
+{
+       struct ice_rx_queue *rxq = rx_queue;
+       volatile uint64_t *status;
+       uint64_t mask;
+       uint32_t desc;
+
+       if (unlikely(offset >= rxq->nb_rx_desc))
+               return -EINVAL;
+
+       if (offset >= rxq->nb_rx_desc - rxq->nb_rx_hold)
+               return RTE_ETH_RX_DESC_UNAVAIL;
+
+       desc = rxq->rx_tail + offset;
+       if (desc >= rxq->nb_rx_desc)
+               desc -= rxq->nb_rx_desc;
+
+       status = &rxq->rx_ring[desc].wb.qword1.status_error_len;
+       mask = rte_cpu_to_le_64((1ULL << ICE_RX_DESC_STATUS_DD_S) <<
+                               ICE_RXD_QW1_STATUS_S);
+       if (*status & mask)
+               return RTE_ETH_RX_DESC_DONE;
+
+       return RTE_ETH_RX_DESC_AVAIL;
+}
+
+int
+ice_tx_descriptor_status(void *tx_queue, uint16_t offset)
+{
+       struct ice_tx_queue *txq = tx_queue;
+       volatile uint64_t *status;
+       uint64_t mask, expect;
+       uint32_t desc;
+
+       if (unlikely(offset >= txq->nb_tx_desc))
+               return -EINVAL;
+
+       desc = txq->tx_tail + offset;
+       /* go to next desc that has the RS bit */
+       desc = ((desc + txq->tx_rs_thresh - 1) / txq->tx_rs_thresh) *
+               txq->tx_rs_thresh;
+       if (desc >= txq->nb_tx_desc) {
+               desc -= txq->nb_tx_desc;
+               if (desc >= txq->nb_tx_desc)
+                       desc -= txq->nb_tx_desc;
+       }
+
+       status = &txq->tx_ring[desc].cmd_type_offset_bsz;
+       mask = rte_cpu_to_le_64(ICE_TXD_QW1_DTYPE_M);
+       expect = rte_cpu_to_le_64(ICE_TX_DESC_DTYPE_DESC_DONE <<
+                                 ICE_TXD_QW1_DTYPE_S);
+       if ((*status & mask) == expect)
+               return RTE_ETH_TX_DESC_DONE;
+
+       return RTE_ETH_TX_DESC_FULL;
+}
+
 void
 ice_clear_queues(struct rte_eth_dev *dev)
 {

diff --git a/drivers/net/ice/ice_rxtx.h b/drivers/net/ice/ice_rxtx.h
index 228d2ff..ec0e52e 100644 (file)
--- a/drivers/net/ice/ice_rxtx.h
+++ b/drivers/net/ice/ice_rxtx.h
@@ -147,6 +147,8 @@ void ice_rxq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
                      struct rte_eth_rxq_info *qinfo);
 void ice_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
                      struct rte_eth_txq_info *qinfo);
+int ice_rx_descriptor_status(void *rx_queue, uint16_t offset);
+int ice_tx_descriptor_status(void *tx_queue, uint16_t offset);
 void ice_set_default_ptype_table(struct rte_eth_dev *dev);
 const uint32_t *ice_dev_supported_ptypes_get(struct rte_eth_dev *dev);
 #endif /* _ICE_RXTX_H_ */