net/atlantic: add flow control configuration

Add support for flow control feature.

Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: Pavel Belous <pavel.belous@aquantia.com>

diff --git a/doc/guides/nics/features/atlantic.ini b/doc/guides/nics/features/atlantic.ini
index 592af81..e86707e 100644 (file)
--- a/doc/guides/nics/features/atlantic.ini
+++ b/doc/guides/nics/features/atlantic.ini
@@ -14,6 +14,7 @@ Allmulticast mode    = Y
 RSS hash             = Y
 RSS key update       = Y
 RSS reta update      = Y
+Flow control         = Y
 CRC offload          = Y
 L3 checksum offload  = Y
 L4 checksum offload  = Y

diff --git a/drivers/net/atlantic/atl_ethdev.c b/drivers/net/atlantic/atl_ethdev.c
index 2f36584..6ce4454 100644 (file)
--- a/drivers/net/atlantic/atl_ethdev.c
+++ b/drivers/net/atlantic/atl_ethdev.c
@@ -48,6 +48,12 @@ static void atl_dev_info_get(struct rte_eth_dev *dev,
 
 static const uint32_t *atl_dev_supported_ptypes_get(struct rte_eth_dev *dev);
 
+/* Flow control */
+static int atl_flow_ctrl_get(struct rte_eth_dev *dev,
+                              struct rte_eth_fc_conf *fc_conf);
+static int atl_flow_ctrl_set(struct rte_eth_dev *dev,
+                              struct rte_eth_fc_conf *fc_conf);
+
 static void atl_dev_link_status_print(struct rte_eth_dev *dev);
 
 /* Interrupts */
@@ -219,6 +225,10 @@ static const struct eth_dev_ops atl_eth_dev_ops = {
        .rx_descriptor_status = atl_dev_rx_descriptor_status,
        .tx_descriptor_status = atl_dev_tx_descriptor_status,
 
+       /* Flow Control */
+       .flow_ctrl_get        = atl_flow_ctrl_get,
+       .flow_ctrl_set        = atl_flow_ctrl_set,
+
        .rxq_info_get         = atl_rxq_info_get,
        .txq_info_get         = atl_txq_info_get,
 
@@ -287,6 +297,7 @@ eth_atl_dev_init(struct rte_eth_dev *eth_dev)
                          AQ_NIC_RATE_1G |
                          AQ_NIC_RATE_100M;
 
+       adapter->hw_cfg.flow_control = (AQ_NIC_FC_RX | AQ_NIC_FC_TX);
        adapter->hw_cfg.aq_rss.indirection_table_size =
                HW_ATL_B0_RSS_REDIRECTION_MAX;
 
@@ -1026,6 +1037,49 @@ atl_dev_interrupt_handler(void *param)
        atl_dev_interrupt_action(dev, dev->intr_handle);
 }
 
+
+static int
+atl_flow_ctrl_get(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
+{
+       struct aq_hw_s *hw = ATL_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+
+       if (hw->aq_nic_cfg->flow_control == AQ_NIC_FC_OFF)
+               fc_conf->mode = RTE_FC_NONE;
+       else if (hw->aq_nic_cfg->flow_control & (AQ_NIC_FC_RX | AQ_NIC_FC_TX))
+               fc_conf->mode = RTE_FC_FULL;
+       else if (hw->aq_nic_cfg->flow_control & AQ_NIC_FC_RX)
+               fc_conf->mode = RTE_FC_RX_PAUSE;
+       else if (hw->aq_nic_cfg->flow_control & AQ_NIC_FC_RX)
+               fc_conf->mode = RTE_FC_TX_PAUSE;
+
+       return 0;
+}
+
+static int
+atl_flow_ctrl_set(struct rte_eth_dev *dev, struct rte_eth_fc_conf *fc_conf)
+{
+       struct aq_hw_s *hw = ATL_DEV_PRIVATE_TO_HW(dev->data->dev_private);
+       uint32_t old_flow_control = hw->aq_nic_cfg->flow_control;
+
+
+       if (hw->aq_fw_ops->set_flow_control == NULL)
+               return -ENOTSUP;
+
+       if (fc_conf->mode == RTE_FC_NONE)
+               hw->aq_nic_cfg->flow_control = AQ_NIC_FC_OFF;
+       else if (fc_conf->mode == RTE_FC_RX_PAUSE)
+               hw->aq_nic_cfg->flow_control = AQ_NIC_FC_RX;
+       else if (fc_conf->mode == RTE_FC_TX_PAUSE)
+               hw->aq_nic_cfg->flow_control = AQ_NIC_FC_TX;
+       else if (fc_conf->mode == RTE_FC_FULL)
+               hw->aq_nic_cfg->flow_control = (AQ_NIC_FC_RX | AQ_NIC_FC_TX);
+
+       if (old_flow_control != hw->aq_nic_cfg->flow_control)
+               return hw->aq_fw_ops->set_flow_control(hw);
+
+       return 0;
+}
+
 static int
 atl_reta_update(struct rte_eth_dev *dev,
                   struct rte_eth_rss_reta_entry64 *reta_conf,