> On Nov 20, 2019, at 6:09 AM, Nirmal Sarkar <nirmal.ki...@gmail.com> wrote: > > Hello, > > Thanks for the help. > As I'm using DPDK-18.11.1, I did not find the definition of > "RTE_ETHER_MAX_LEN" in lib/librte_net/rte_ether.h file. > So I set "ETHER_MAX_LEN" value to 9600. > Apart from that I took rest of the changes and with these I'm able to send > jumbo frame. > Took tcpdump on the receiving end. > > Suddenly I got stuck at ARP. I could not send packets anymore.
Sorry, I can not tell what the error condition is you are hitting, as the two screen dumps do not provide me where I should start looking. If you can help me understand the issue better. > > I've attached success & failure scenario. > > Regards, > N. Sarkar > > On Wed, Nov 20, 2019 at 2:14 AM Morten Brørup <m...@smartsharesystems.com> > wrote: > >> John, Marko, >> >> It seems we are missing documentation about enabling Jumbo frames in an >> application, and possibly an example of using the rte_eth_dev_info->max_mtu. >> >> >> Med venlig hilsen / kind regards >> - Morten Brørup >> >>> -----Original Message----- >>> From: dev [mailto:dev-boun...@dpdk.org] On Behalf Of Roberts, Lee A. >>> Sent: Tuesday, November 19, 2019 6:42 PM >>> To: Nirmal Sarkar; dev@dpdk.org >>> Subject: Re: [dpdk-dev] Jumbo Frame in pktgen & dpdk-pktgen >>> >>> 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 >>> >>> >>> -----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 >> > <success.txt><failure.txt> Regards, Keith
