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Wed, 5 May 2021 12:57:44 +0000 From: Anand Gupta To: "Wiles, Keith" CC: "users@dpdk.org" Thread-Topic: [dpdk-users] DPDK-PKTGEN crashes when using Jumbo frame in AWS EC2 Thread-Index: AdcA/F6NpWsNDNjzSAyrOD36CxL9vgARHkwAEBhEd9AAArKFMgAAOEZw Date: Wed, 5 May 2021 12:57:44 +0000 Message-ID: References: , In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: intel.com; dkim=none (message not signed) header.d=none;intel.com; dmarc=none action=none header.from=keysight.com; x-originating-ip: [121.244.60.107] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 758eb387-9de7-4ba2-e38c-08d90fc5601b x-ms-traffictypediagnostic: MN2PR17MB3101: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:9508; x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: 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 x-forefront-antispam-report: CIP:255.255.255.255; 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charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 Subject: Re: [dpdk-users] DPDK-PKTGEN crashes when using Jumbo frame in AWS EC2 X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: users-bounces@dpdk.org Sender: "users" Hi Keith, Thanks for the reply. Can you explain if possible what does "DEV_TX_OFFLOAD_MULTI_SEGS" do if it = is used in TX-Offload ? What is the use of this in Jumbo frame scenario? Thanks, Anand From: Wiles, Keith Sent: Wednesday, May 5, 2021 6:19 PM To: Anand Gupta Cc: users@dpdk.org Subject: Re: [dpdk-users] DPDK-PKTGEN crashes when using Jumbo frame in AWS= EC2 We can try to test for Multi-segs in pktgen in the file app/pktgen-port-cfg= .c you can search for MULTI_SEGS and add the test. if (info->dev_info.tx_offload_capa & DEV_TX_OFFLOAD= _MULTI_SEGS) conf.txmode.offloads |=3D DEV_TX_OFFLOAD_MU= LTI_SEGS; From: Anand Gupta > Date: Wednesday, May 5, 2021 at 6:54 AM To: Wiles, Keith > Cc: users@dpdk.org > Subject: RE: [dpdk-users] DPDK-PKTGEN crashes when using Jumbo frame in AWS= EC2 Hi Keith, I found the root cause for the problem " requested Tx offloads 0x8000 doesn= 't match Tx offloads capabilities 0xe" in EC2 instances. The DPDK ENA driver does not have "DEV_TX_OFFLOAD_MULTI_SEGS" TX offload ca= pability in TX offloads capabilities and in Pktgen when Jumbo frame is enab= led, the TX-offload adds " DEV_TX_OFFLOAD_MULTI_SEGS". Is "DEV_TX_OFFLOAD_MULTI_SEGS" necessary when the Jumbo frame is enable in = the Pktgen or can we first check if the Device supports the offload or not = and then add " DEV_TX_OFFLOAD_MULTI_SEGS"? What is the mechanism of "DEV_TX_OFFLOAD_MULTI_SEGS" when enabling Jumbo fr= ames? Thanks, Anand -----Original Message----- From: Wiles, Keith > Sent: Friday, February 12, 2021 7:26 PM To: Anand Gupta > Cc: users@dpdk.org Subject: Re: [dpdk-users] DPDK-PKTGEN crashes when using Jumbo frame in AWS= EC2 CAUTION: This message originates from an external sender. > On Feb 11, 2021, at 11:03 PM, Anand Gupta > wrote: > > Hello All, > > I'm trying to run DPDK-PKTGEN in AWS EC2 instances and able to send packe= ts up to 1.5 KB packets. > If we use Jumbo frame packets then we are getting error "requested Tx off= loads 0x8000 doesn't match Tx offloads capabilities 0xe". > > Setup: > Ubuntu: 16.04 > Driver: ENA 2.0.3K > DPDK: 18.11.1 > PKTGEN: 3.7.1 Please update to the latest Pktgen 21.02.0 with the latest DPDK version. If= you can not upgrade then please look at the latest version as some work fo= r jumbo frames was done a few months ago. > > Can anyone help me with this issue ? Is anything I'm missing ? > > Thanks, > Anand