Hi Keith, I've taken all the changes [in pktgen-3.7.1] you made to support Jumbo Frame.
I'm sending packet of 9000 bytes from the sender. [sending screenshot attached]. In the receiver side: (1) started testpmd: [ testpmd -c 0x0f -n 2 -b 03:00.0 -- -i --rxd=1024 --txd=1024 --burst=144 --txpt=32 --txht=0 --txfreet=0 --rxfreet=64 --mbcache=200 --portmask=0x3 --mbuf-size=2048 --max-pkt-len=9600 ] Now if I do a "show port stats 0", I see "RX-missed" is getting increased where as "RX-bytes" is stuck into a fixed value. ######################## NIC statistics for port 0 ######################## RX-packets: 259 RX-missed: 35728 RX-bytes: 2294220 RX-errors: 0 RX-nombuf: 0 TX-packets: 0 TX-errors: 0 TX-bytes: 0 Throughput (since last show) Rx-pps: 0 Tx-pps: 0 ############################################################################ ######################## NIC statistics for port 0 ######################## RX-packets: 259 RX-missed: 71272 RX-bytes: 2294220 RX-errors: 0 RX-nombuf: 0 TX-packets: 0 TX-errors: 0 TX-bytes: 0 Throughput (since last show) Rx-pps: 0 Tx-pps: 0 ############################################################################ (2) started pktgen with "-j" option: (i) "MBits/s Rx" is not more than 384 when I send 9K packet, but this value increases to 985~1007 if I send 1K packet. (ii) "Pkt Size" is showing 64 (iii) I'm seeing only Packet of size 5K is getting received when I send 9K packet.[ Please check the attached receive.jpg] >From the above observation in the receiver side, there may be some issue in receiving Jumbo frames. I would also like to mention *Fragmentation* is not required in the send/recv. Regards, N. Sarkar On Mon, Dec 2, 2019 at 1:25 AM Nirmal Sarkar <nirmal.ki...@gmail.com> wrote: > Hello Keith, > > Thanks a lot for your help. > I'm using pktgen-3.7.1. So I'll pull your changes there and check it. > > Regards, > N. Sarkar > > On Sat, Nov 30, 2019 at 5:31 AM Wiles, Keith <keith.wi...@intel.com> > wrote: > >> >> >> > On Nov 19, 2019, at 11:42 AM, Roberts, Lee A. <lee.robe...@hpe.com> >> wrote: >> > >> > Nirmal, >> > >> > Here are the changes that I've been using to allow jumbo frames with >> dpdk-19.08 and >> > pktgen-19.10.0: >> > >> > diff -r default/dpdk-19.08/lib/librte_mbuf/rte_mbuf.h >> jumbo/dpdk-19.08/lib/librte_mbuf/rte_mbuf.h >> > 462c462 >> > < #define RTE_MBUF_DEFAULT_DATAROOM 2048 >> > --- >> >> #define RTE_MBUF_DEFAULT_DATAROOM 9600 >> > diff -r default/dpdk-19.08/lib/librte_net/rte_ether.h >> jumbo/dpdk-19.08/lib/librte_net/rte_ether.h >> > 33c33 >> > < #define RTE_ETHER_MAX_LEN 1518 /**< Maximum frame len, including >> CRC. */ >> > --- >> >> #define RTE_ETHER_MAX_LEN 9600 /**< Maximum frame len, including >> CRC. */ >> > diff -r default/pktgen-19.10.0/app/pktgen.c >> jumbo/pktgen-19.10.0/app/pktgen.c >> > 749c749 >> > < else if ( (plen >= 1024) && (plen <= PG_ETHER_MAX_LEN)) >> > --- >> >> else if ( (plen >= 1024) && (plen <= 1518)) >> > 753c753 >> > < else if (plen > PG_ETHER_MAX_LEN) >> > --- >> >> else if (plen > 1518) >> > diff -r default/pktgen-19.10.0/lib/common/pg_inet.h >> jumbo/pktgen-19.10.0/lib/common/pg_inet.h >> > 379,380c379,380 >> > < #define ETH_MTU 1500 /* Max MTU for Ethernet */ >> > < #define ETH_MAX_PKT 1518 /* Max Ethernet frame >> size */ >> > --- >> >> #define ETH_MTU 9600 /* Max MTU for Ethernet */ >> >> #define ETH_MAX_PKT 9600 /* Max Ethernet frame >> size */ >> > >> > - Lee Roberts >> >> I have a updated pktgen with jumbo support. You need to pass the -j >> option to get jumbo frame support in pktgen. I have not done a lot of >> testing on this version. If you have time please pull the pktgen repo and >> switch over to the ‘dev’ branch and see if this work for you. I did not use >> your changes here and did it my way :-) >> >> I did not change DPDK, as it seemed like it did not matter if >> RTE_MBUF_DEFAULT_DATAROOM changed. I am sure someplace may care if they >> used that define. >> >> > >> > >> > -----Original Message----- >> > From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Nirmal Sarkar >> > Sent: Monday, November 18, 2019 10:26 AM >> > To: dev@dpdk.org >> > Subject: [dpdk-dev] Jumbo Frame in pktgen & dpdk-pktgen >> > >> > Hello, >> > >> > I'm trying to explore pktgen and dpdk-pktgen with Jumbo frame. >> > >> > I'm using ubuntu-18.04 system where pktgen is a kernel module and I >> don't have any provision to set it for Jumbo frame. >> > Can you please suggest how to configure Jumbo frame in pktgen ? >> > >> > In dpdk source code, I've modified RTE_MBUF_DEFAULT_DATAROOM [ >> *lib/librte_mbuf/rte_mbuf.h*] value with 9K and built. >> > During testing, I could not send packet size more than 1500 byte. >> > What is the suggestion to overcome this problem ? >> > >> > Regards, >> > N. Sarkar >> >> Regards, >> Keith >> >>
