diff options
Diffstat (limited to 'src/plugins/dpdk/device/common.c')
| -rw-r--r-- | src/plugins/dpdk/device/common.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/src/plugins/dpdk/device/common.c b/src/plugins/dpdk/device/common.c index df80a85872d..61ab7b4a5b2 100644 --- a/src/plugins/dpdk/device/common.c +++ b/src/plugins/dpdk/device/common.c @@ -66,7 +66,7 @@ dpdk_device_setup (dpdk_device_t * xd) struct rte_eth_dev_info dev_info; struct rte_eth_conf conf = {}; u64 rxo, txo; - u16 mtu; + u16 max_frame_size; int rv; int j; @@ -179,12 +179,11 @@ dpdk_device_setup (dpdk_device_t * xd) xd->max_supported_frame_size = dev_info.max_rx_pktlen; #endif - mtu = clib_min (xd->max_supported_frame_size - xd->driver_frame_overhead, - ethernet_main.default_mtu); - mtu = mtu + hi->frame_overhead - xd->driver_frame_overhead; + max_frame_size = clib_min (xd->max_supported_frame_size, + ethernet_main.default_mtu + hi->frame_overhead); #if RTE_VERSION >= RTE_VERSION_NUM(21, 11, 0, 0) - conf.rxmode.mtu = mtu; + conf.rxmode.mtu = max_frame_size - xd->driver_frame_overhead; #endif retry: @@ -197,15 +196,15 @@ retry: } #if RTE_VERSION < RTE_VERSION_NUM(21, 11, 0, 0) - rte_eth_dev_set_mtu (xd->port_id, mtu); + rte_eth_dev_set_mtu (xd->port_id, + max_frame_size - xd->driver_frame_overhead); #endif hi->max_frame_size = 0; - vnet_hw_interface_set_max_frame_size (vnm, xd->hw_if_index, - mtu + hi->frame_overhead); - dpdk_log_debug ("[%u] mtu %u max_frame_size %u max max_frame_size %u " + vnet_hw_interface_set_max_frame_size (vnm, xd->hw_if_index, max_frame_size); + dpdk_log_debug ("[%u] max_frame_size %u max max_frame_size %u " "driver_frame_overhead %u", - xd->port_id, mtu, hi->max_frame_size, + xd->port_id, hi->max_frame_size, xd->max_supported_frame_size, xd->driver_frame_overhead); vec_validate_aligned (xd->tx_queues, xd->conf.n_tx_queues - 1, |