[dpdk-users] Jumbo Packet Support

[dpdk-users] Jumbo Packet Support

[mohammad reza piroozi]

Hi,
I configured my own DPDK-based application to support jumbo frames:

   - port_conf.rxmode.jumbo_frame = 1
   - port_conf.rxmode.max_rx_pkt_len = 9600

After this configuration I can receive jumbo packets but I can not transmit
those packets. Can somebody help me please?

   - DPDK version: 17.05.2
   - NIC: Intel 82599
   - Driver: ixgbe

Thanks,
MRP

[dpdk-users] Jumbo Packet Support

[Lawrence MacIntyre]

Hi:

I am attempting to use DPDK v2.1.0 and noticed that there appears to be 
nascent support for jumbo packets. For example, in the example 
application l2fwd, the comments reference an EAL parameter 
--enable-jumbo. However, in the EAL library routines, that parameter 
doesn't exist. I looked into the librte_ether/rte_ethdev.c routine and 
found that if I modify the l2fwd example as so:

modify Line 119:
     .jumbo_frame = 0
to
     .jumbo_frame = 1,
     .max_rx_pkt_len = 9000,

that the program will compile and run, but any packets larger than 2006 
bytes are truncated. What do I need to do in order to make the program 
support jumbo packets (9000 bytes in my case)? Or is there a different 
but better way to support 9000 byte packets at rates close to 10 Gb/s?

Thanks,
Lawrence

-- 
Lawrence MacIntyre  macintyrelp@ornl.gov  Oak Ridge National Laboratory
  865.574.7401  Cyber Space and Information Intelligence Research Group