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
