[PATCH v1 15/18] net/r8169: impelment MTU configuration

[Howard Wang]

Add support for updating MTU value.

Signed-off-by: Howard Wang <howard_w...@realsil.com.cn>
---
 drivers/net/r8169/r8169_ethdev.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/drivers/net/r8169/r8169_ethdev.c b/drivers/net/r8169/r8169_ethdev.c
index 3e6bc570d6..70c3661691 100644
--- a/drivers/net/r8169/r8169_ethdev.c
+++ b/drivers/net/r8169/r8169_ethdev.c
@@ -47,6 +47,7 @@ static int rtl_promiscuous_enable(struct rte_eth_dev *dev);
 static int rtl_promiscuous_disable(struct rte_eth_dev *dev);
 static int rtl_allmulticast_enable(struct rte_eth_dev *dev);
 static int rtl_allmulticast_disable(struct rte_eth_dev *dev);
+static int rtl_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu);
 
 /*
  * The set of PCI devices this driver supports
@@ -93,6 +94,8 @@ static const struct eth_dev_ops rtl_eth_dev_ops = {
        .stats_get            = rtl_dev_stats_get,
        .stats_reset          = rtl_dev_stats_reset,
 
+       .mtu_set              = rtl_dev_mtu_set,
+
        .rx_queue_setup       = rtl_rx_queue_setup,
        .rx_queue_release     = rtl_rx_queue_release,
        .rxq_info_get         = rtl_rxq_info_get,
@@ -388,6 +391,9 @@ rtl_dev_infos_get(struct rte_eth_dev *dev, struct 
rte_eth_dev_info *dev_info)
                break;
        }
 
+       dev_info->min_mtu = RTE_ETHER_MIN_MTU;
+       dev_info->max_mtu = dev_info->max_rx_pktlen - RTL_ETH_OVERHEAD;
+
        dev_info->rx_offload_capa = (rtl_get_rx_port_offloads() |
                                     dev_info->rx_queue_offload_capa);
        dev_info->tx_offload_capa = rtl_get_tx_port_offloads();
@@ -610,6 +616,29 @@ rtl_dev_close(struct rte_eth_dev *dev)
        return ret_stp;
 }
 
+static int
+rtl_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
+{
+       struct rte_eth_dev_info dev_info;
+       struct rtl_adapter *adapter = RTL_DEV_PRIVATE(dev);
+       struct rtl_hw *hw = &adapter->hw;
+       int ret;
+       uint32_t frame_size = mtu + RTL_ETH_OVERHEAD;
+
+       ret = rtl_dev_infos_get(dev, &dev_info);
+       if (ret != 0)
+               return ret;
+
+       if (mtu < RTE_ETHER_MIN_MTU || frame_size > dev_info.max_rx_pktlen)
+               return -EINVAL;
+
+       hw->mtu = mtu;
+
+       RTL_W16(hw, RxMaxSize, frame_size);
+
+       return 0;
+}
+
 static int
 rtl_dev_init(struct rte_eth_dev *dev)
 {
-- 
2.34.1