Hi,
I am using vpp stable/2005 code. I want to enable UDP checksum offload for tx .
I changed the vpp startup.cfg file -
## Disables UDP / TCP TX checksum offload. Typically needed for use
## faster vector PMDs (together with no-multi-seg)
# no-tx-checksum-offload
## Enable UDP / TCP TX checksum offload
## This is the reversed option of 'no-tx-checksum-offload'
*enable-tcp-udp-checksum*
But , still it is not activated . However all these tx offloads are available.
With VPP 19.05 , I was able to activate it by adding following piece of code in
./plugins/dpdk/device/init.c
case VNET_DPDK_PMD_CXGBE:
case VNET_DPDK_PMD_MLX4:
case VNET_DPDK_PMD_MLX5:
case VNET_DPDK_PMD_QEDE:
case VNET_DPDK_PMD_BNXT:
xd->port_type = port_type_from_speed_capa (&dev_info);
*if (dm->conf->no_tx_checksum_offload == 0)*
*{*
*xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_TCP_CKSUM;*
*xd->port_conf.txmode.offloads |= DEV_TX_OFFLOAD_UDP_CKSUM;*
*xd->flags |=*
*DPDK_DEVICE_FLAG_TX_OFFLOAD |*
*DPDK_DEVICE_FLAG_INTEL_PHDR_CKSUM;*
*}*
break;
But, the above code does not work with vpp 20.05. I think , there is a newer
version of DPDK in this release.
Please let me know if I am doing something wrong.
HundredGigabitEthernet12/0/0 2 up HundredGigabitEthernet12/0/0
Link speed: 100 Gbps
Ethernet address b8:83:03:9e:68:f0
Mellanox ConnectX-4 Family
carrier up full duplex mtu 9206
flags: admin-up pmd maybe-multiseg subif rx-ip4-cksum
rx: queues 2 (max 1024), desc 1024 (min 0 max 65535 align 1)
tx: queues 4 (max 1024), desc 1024 (min 0 max 65535 align 1)
pci: device 15b3:1013 subsystem 1590:00c8 address 0000:12:00.00 numa 0
switch info: name 0000:12:00.0 domain id 0 port id 65535
max rx packet len: 65536
promiscuous: unicast off all-multicast on
vlan offload: strip off filter off qinq off
rx offload avail: vlan-strip ipv4-cksum udp-cksum tcp-cksum vlan-filter
jumbo-frame scatter timestamp keep-crc rss-hash
rx offload active: ipv4-cksum udp-cksum tcp-cksum jumbo-frame scatter
*tx offload avail: vlan-insert ipv4-cksum udp-cksum tcp-cksum tcp-tso*
*outer-ipv4-cksum vxlan-tnl-tso gre-tnl-tso geneve-tnl-tso*
*multi-segs udp-tnl-tso ip-tnl-tso*
*tx offload active: multi-segs*
rss avail: ipv4-frag ipv4-tcp ipv4-udp ipv4-other ipv4 ipv6-tcp-ex
ipv6-udp-ex ipv6-frag ipv6-tcp ipv6-udp ipv6-other
ipv6-ex ipv6 l4-dst-only l4-src-only l3-dst-only l3-src-only
rss active: ipv4-frag ipv4-tcp ipv4-udp ipv4-other ipv4 ipv6-tcp-ex
ipv6-udp-ex ipv6-frag ipv6-tcp ipv6-udp ipv6-other
ipv6-ex ipv6
tx burst mode: No MPW + MULTI + TSO + INLINE + METADATA
rx burst mode: Scalar
tx frames ok 14311830
tx bytes ok 128602546562
rx frames ok 1877
rx bytes ok 228452
thanks,
-Raj
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