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Date: Mon, 27 Apr 2015 22:47:13 -0400 (EDT) From: David Miller <davem@...emloft.net> To: jaeden.amero@...com Cc: nicolas.ferre@...el.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, jeff.westfahl@...com, mihai.neagu@...com Subject: Re: [PATCH RFC] net/macb: Fix UDPv4 checksum offload From: Jaeden Amero <jaeden.amero@...com> Date: Mon, 27 Apr 2015 17:43:30 -0500 > If we set the checksum field in the UDP header to 0, the checksum is > computed correctly. I think this is completely bogus. A UDP checksum of zero, means "checksum not computed". And your device isn't computing the checksum at all, but rather is leaving it at zero. You need to handle this properly by computing the checksum in software and then setting the TX descriptor bits such that the chip leaves the checksum field alone. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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