netdev - Re: [PATCH net-next] loopback: sctp: add NETIF_F_SCTP

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Message-Id: <20140224.190036.1932145515925400435.davem@davemloft.net>
Date:	Mon, 24 Feb 2014 19:00:36 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	dborkman@...hat.com
Cc:	netdev@...r.kernel.org, linux-sctp@...r.kernel.org
Subject: Re: [PATCH net-next] loopback: sctp: add NETIF_F_SCTP_CSUM to
 device features

From: Daniel Borkmann <dborkman@...hat.com>
Date: Sat, 22 Feb 2014 14:01:53 +0100

> Drivers are allowed to set NETIF_F_SCTP_CSUM if they have
> hardware crc32c checksumming support for the SCTP protocol.
> Currently, NETIF_F_SCTP_CSUM flag is available in igb,
> ixgbe, i40e/i40evf drivers and for vlan devices.
> 
> If we don't have NETIF_F_SCTP_CSUM then crc32c is done
> through CPU instructions, invoked from crypto layer, or
> if not available as slow-path fallback in software.
> 
> Currently, loopback device propagates checksum offloading
> feature flags in dev->features, but is missing SCTP checksum
> offloading. Therefore, account for NETIF_F_SCTP_CSUM as
> well.
 ...
> Signed-off-by: Daniel Borkmann <dborkman@...hat.com>

Applied, thanks a lot Daniel.
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