From: David Miller <davem@davemloft.net>
To: tom@herbertland.com
Cc: netdev@vger.kernel.org, kernel-team@fb.com
Subject: Re: [PATCH net-next] net: Implement fast csum_partial for x86_64
Date: Mon, 04 Jan 2016 22:01:08 -0500 (EST) [thread overview]
Message-ID: <20160104.220108.58746007572013351.davem@davemloft.net> (raw)
In-Reply-To: <1451863347-1832521-1-git-send-email-tom@herbertland.com>
From: Tom Herbert <tom@herbertland.com>
Date: Sun, 3 Jan 2016 15:22:27 -0800
> Implement assembly routine for csum_partial for 64 bit x86. This
> primarily speeds up checksum calculation for smaller lengths such as
> those that are present when doing skb_postpull_rcsum when getting
> CHECKSUM_COMPLETE from device or after CHECKSUM_UNNECESSARY
> conversion.
>
> This implementation is similar to csum_partial implemented in
> checksum_32.S, however since we are dealing with 8 bytes at a time
> there are more cases for alignment and small lengths-- for those we
> employ jump tables.
Looks great, but probably has to go through the x86 maintainers
as Eric suggested.
prev parent reply other threads:[~2016-01-05 3:01 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-03 23:22 [PATCH net-next] net: Implement fast csum_partial for x86_64 Tom Herbert
2016-01-04 22:17 ` Hannes Frederic Sowa
2016-01-04 22:36 ` Eric Dumazet
2016-01-04 23:34 ` Tom Herbert
2016-01-04 23:51 ` Hannes Frederic Sowa
2016-01-04 23:52 ` Eric Dumazet
2016-01-04 23:58 ` Tom Herbert
2016-01-05 3:01 ` David Miller [this message]
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