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| author |   Nitin Saxena <nitin.saxena@cavium.com> | 2018-02-16 11:21:38 +0000 |
|---|---|---|
| committer |   Damjan Marion <dmarion.lists@gmail.com> | 2018-02-19 20:14:51 +0000 |
| commit | fa957142beae75e4cf881f7e861cefd97f034a83 (patch) | |
| tree | 59768ec6ffa1370dab537cf075b880b3eaa0a12c /doxygen/dev_doc.md | |
| parent | c6969b55e40613479183141c01f057f9253f17a8 (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>
Diffstat (limited to 'doxygen/dev_doc.md')
0 files changed, 0 insertions, 0 deletions