From: "Morten Brørup" <mb@smartsharesystems.com>
To: "John McNamara" <john.mcnamara@intel.com>,
"Marko Kovacevic" <marko.kovacevic@intel.com>
Cc: "Thomas Monjalon" <thomas@monjalon.net>,
"Ferruh Yigit" <ferruh.yigit@intel.com>,
"Andrew Rybchenko" <arybchenko@solarflare.com>,
"Nirmal Sarkar" <nirmal.kisan@gmail.com>,
"Roberts, Lee A." <lee.roberts@hpe.com>, <dev@dpdk.org>
Subject: Re: [dpdk-dev] Jumbo Frame in pktgen & dpdk-pktgen
Date: Tue, 19 Nov 2019 21:44:38 +0100 [thread overview]
Message-ID: <98CBD80474FA8B44BF855DF32C47DC35C60C14@smartserver.smartshare.dk> (raw)
In-Reply-To: <DF4PR8401MB077780C0CDA70DD6A8788151E54C0@DF4PR8401MB0777.NAMPRD84.PROD.OUTLOOK.COM>
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-bounces@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-bounces@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
next prev parent reply other threads:[~2019-11-19 20:44 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-18 17:25 Nirmal Sarkar
2019-11-19 17:42 ` Roberts, Lee A.
2019-11-19 20:44 ` Morten Brørup [this message]
2019-11-20 12:09 ` Nirmal Sarkar
2019-11-20 18:54 ` Wiles, Keith
2019-11-26 8:21 ` Nirmal Sarkar
2019-11-27 15:12 ` Wiles, Keith
2019-11-27 18:42 ` Nirmal Sarkar
2019-11-30 0:01 ` Wiles, Keith
2019-12-01 19:55 ` Nirmal Sarkar
2019-12-02 12:46 ` Nirmal Sarkar
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