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authorNitin Saxena <nitin.saxena@cavium.com>2018-02-16 11:21:38 +0000
committerDamjan Marion <dmarion.lists@gmail.com>2018-02-19 20:14:51 +0000
commitfa957142beae75e4cf881f7e861cefd97f034a83 (patch)
tree59768ec6ffa1370dab537cf075b880b3eaa0a12c /LICENSE
parentc6969b55e40613479183141c01f057f9253f17a8 (diff)
dpdk: Fix MTU calc for NICs that support mtu<9216
Problem: rte_eth_dev_set_mtu() returns with failure from ThunderX NICVF DPDK PMD driver which supports MTU less than ETHERNET_MAX_PACKET_BYTES. rte_eth_dev_set_mtu() being called twice from dpdk_lib_init(): one via dpdk_device_setup() and second in dpdk_lib_init() itself. Currently dpdk_lib_init() passes vnet_hardware_interface->max_packet_bytes as an argument to rte_eth_dev_set_mtu() without consulting dev_info.max_rx_pktlen. NICs like i4oe, ixgbe can support MTU much greater than 9216 hence its not a problem for those NICS. Fix: This patch calculates dpdk_device->port_conf.rxmode.max_rx_pkt_len, vnet_hardware_interface->max_packet_bytes and MTU by consulting dev_info.max_rx_pktlen. Change-Id: If04bbfae49ee971dac0063ff1835e4a9c3087865 Signed-off-by: Nitin Saxena <nitin.saxena@cavium.com>
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