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From: Alex Markuze <alex-I7wstvAgZDk@public.gmane.org>
To: "dev-VfR2kkLFssw@public.gmane.org" <dev-VfR2kkLFssw@public.gmane.org>
Subject: UDP Checksum
Date: Thu, 6 Nov 2014 18:05:28 +0200	[thread overview]
Message-ID: <CAKfHP0WWCrftSR=z=jvUsHCLtTZdBwch0ZvadiLa9nMfcbpW-Q@mail.gmail.com> (raw)

Hi,
I'm seeing "UDP: bad checksum." messages(dmesg) for packets sent by my dpdk
app to a socket on a remote machine.
Looking at the packets the scum value is set, its just not what wireshark
expects.

When sending I'm setting these fields in the egress packets.

        pkt->pkt.vlan_macip.f.l2_len = sizeof(struct ether_hdr);

        pkt->pkt.vlan_macip.f.l3_len = sizeof(struct ipv4_hdr);

        pkt->ol_flags |= (PKT_TX_IP_CKSUM | PKT_TX_L4_MASK);
//PKT_TX_OFFLOAD_MASK;


I'm working with a 82599 VF.


Any thoughts? I'm not sure what else to check.

             reply	other threads:[~2014-11-06 16:05 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-11-06 16:05 Alex Markuze [this message]
     [not found] ` <CAKfHP0WWCrftSR=z=jvUsHCLtTZdBwch0ZvadiLa9nMfcbpW-Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-06 16:15   ` UDP Checksum Olivier MATZ
2014-11-06 16:15   ` Ananyev, Konstantin
     [not found]     ` <2601191342CEEE43887BDE71AB977258213A2E79-kPTMFJFq+rEu0RiL9chJVbfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2014-11-06 16:26       ` Alex Markuze
     [not found]         ` <2601191342CEEE43887BDE71AB977258213A2EC5@IRSMSX105.ger.corp.intel.com>
     [not found]           ` <2601191342CEEE43887BDE71AB977258213A2EC5-kPTMFJFq+rEu0RiL9chJVbfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2014-11-06 17:07             ` Ananyev, Konstantin

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