From: Thomas Graf <tgraf@suug.ch>
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: Wed, 9 Dec 2015 23:44:45 +0100 [thread overview]
Message-ID: <20151209224445.GI11201@pox.localdomain> (raw)
In-Reply-To: <CALx6S34pkU6XYk4N8MRszae-GoZRzK4vct=WpcX_KC-O9J8p0w@mail.gmail.com>
On 12/09/15 at 02:42pm, Tom Herbert wrote:
> csum_start and csum_offset together occupy 32 bits. As demonstrated in
> VXLAN RCO we can compress csum_start/csum_offset down to 8 bits which
> means if necessary we could get up to four pairs in an sk_buff without
> increasing its size. If you need more that four checksums to be
> offloaded in single packet then I doubt getting checksum offload to
> work is going to be your biggest problem.
Fair point. I wouldn't suggest even creating it without huge demand
first. There should be as many incentives as possible to move or stay
away from such horrible architectures.
next prev parent reply other threads:[~2015-12-09 22:44 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 [this message]
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
2015-12-12 17:24 ` Tom Herbert
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