ethdev: move jumbo frame offload check to library

[dpdk.git] / lib / ethdev / rte_ethdev.c

diff --git a/lib/ethdev/rte_ethdev.c b/lib/ethdev/rte_ethdev.c
index 8d1ccf6..850208b 100644 (file)
--- a/lib/ethdev/rte_ethdev.c
+++ b/lib/ethdev/rte_ethdev.c
@@ -3647,6 +3647,7 @@ rte_eth_dev_set_mtu(uint16_t port_id, uint16_t mtu)
        int ret;
        struct rte_eth_dev_info dev_info;
        struct rte_eth_dev *dev;
+       int is_jumbo_frame_capable = 0;
 
        RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
        dev = &rte_eth_devices[port_id];
@@ -3665,12 +3666,27 @@ rte_eth_dev_set_mtu(uint16_t port_id, uint16_t mtu)
 
                if (mtu < dev_info.min_mtu || mtu > dev_info.max_mtu)
                        return -EINVAL;
+
+               if ((dev_info.rx_offload_capa & DEV_RX_OFFLOAD_JUMBO_FRAME) != 0)
+                       is_jumbo_frame_capable = 1;
        }
 
+       if (mtu > RTE_ETHER_MTU && is_jumbo_frame_capable == 0)
+               return -EINVAL;
+
        ret = (*dev->dev_ops->mtu_set)(dev, mtu);
-       if (!ret)
+       if (ret == 0) {
                dev->data->mtu = mtu;
 
+               /* switch to jumbo mode if needed */
+               if (mtu > RTE_ETHER_MTU)
+                       dev->data->dev_conf.rxmode.offloads |=
+                               DEV_RX_OFFLOAD_JUMBO_FRAME;
+               else
+                       dev->data->dev_conf.rxmode.offloads &=
+                               ~DEV_RX_OFFLOAD_JUMBO_FRAME;
+       }
+
        return eth_err(port_id, ret);
 }