From: Sowmini Varadhan <sowmini.varadhan@oracle.com>
To: Tom Herbert <tom@herbertland.com>
Cc: Edward Cree <ecree@solarflare.com>,
Linux Kernel Network Developers <netdev@vger.kernel.org>,
David Miller <davem@davemloft.net>
Subject: Re: Checksum offload queries
Date: Sat, 12 Dec 2015 11:41:37 -0500 [thread overview]
Message-ID: <20151212164137.GG19608@oracle.com> (raw)
In-Reply-To: <CALx6S35UUmt+f4c_5Dh=8qvKBqtO7F5j_RqhXs01ONhj4HChKw@mail.gmail.com>
On (12/11/15 15:50), Tom Herbert wrote:
> layers of encapsulation. For example, suppose send a UDP packet in
> VXLAN in VXLAN, where packet looks like:
> IP|UDP|VXLAN|Eth|IP|UDP|VXLAN|Eth|IP|UDP. I believe the kernel can set
Without detracting from the fact that you have probably found a bug
for checksumming here..
if you have multiple encapsulations above (vxlan over vxlan?)
I think lot of other things like pmtu may also be broken? (Each
encaps layer lowers the actual application mtu till the thing starts
to get absurd)
--Sowmini
next prev parent reply other threads:[~2015-12-12 16:41 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-07 15:39 Checksum offload queries Edward Cree
2015-12-07 17:29 ` Tom Herbert
2015-12-07 17:52 ` Tom Herbert
2015-12-08 16:03 ` Edward Cree
2015-12-08 16:43 ` Tom Herbert
2015-12-08 18:03 ` Edward Cree
2015-12-08 17:09 ` David Miller
2015-12-08 17:24 ` Edward Cree
2015-12-08 17:28 ` David Miller
2015-12-07 19:38 ` David Miller
2015-12-08 14:42 ` Edward Cree
2015-12-08 17:04 ` Tom Herbert
2015-12-09 1:56 ` Thomas Graf
2015-12-09 16:08 ` Tom Herbert
2015-12-09 22:29 ` Thomas Graf
2015-12-09 22:51 ` Tom Herbert
2015-12-09 23:13 ` Thomas Graf
2015-12-08 17:06 ` David Miller
2015-12-09 12:14 ` Edward Cree
2015-12-09 16:01 ` Tom Herbert
2015-12-09 17:28 ` Edward Cree
2015-12-09 17:31 ` David Laight
2015-12-09 18:00 ` Tom Herbert
2015-12-09 22:21 ` Thomas Graf
2015-12-09 22:42 ` Tom Herbert
2015-12-09 22:44 ` Thomas Graf
2015-12-10 15:49 ` Edward Cree
2015-12-10 16:26 ` Tom Herbert
2015-12-10 20:28 ` Edward Cree
2015-12-10 21:02 ` Rustad, Mark D
2015-12-14 15:11 ` [RFC PATCH net-next 0/2] Local checksum offload for VXLAN Edward Cree
2015-12-14 15:13 ` [PATCH 1/2] net: udp: local checksum offload for encapsulation Edward Cree
2015-12-14 17:16 ` Tom Herbert
2015-12-15 18:07 ` Edward Cree
2015-12-14 15:13 ` [PATCH 2/2] net: vxlan: enable local checksum offload on HW_CSUM devices Edward Cree
2015-12-11 23:50 ` Checksum offload queries Tom Herbert
2015-12-12 16:41 ` Sowmini Varadhan [this message]
2015-12-12 17:24 ` Tom Herbert
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