From: Vladimir Oltean <olteanv@gmail.com>
To: Lino Sanfilippo <LinoSanfilippo@gmx.de>
Cc: Andrew Lunn <andrew@lunn.ch>,
woojung.huh@microchip.com, UNGLinuxDriver@microchip.com,
vivien.didelot@gmail.com, f.fainelli@gmail.com,
davem@davemloft.net, kuba@kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] net: dsa: tag_ksz: dont let the hardware process the layer 4 checksum
Date: Thu, 15 Jul 2021 16:12:51 +0300 [thread overview]
Message-ID: <20210715131251.zhtcsjkat267yrtl@skbuf> (raw)
In-Reply-To: <trinity-0dbbc59b-1e7d-4f58-8611-adb281a82477-1626354270982@3c-app-gmx-bap31>
On Thu, Jul 15, 2021 at 03:04:31PM +0200, Lino Sanfilippo wrote:
> Please note that skb_put() asserts that the SKB is linearized. So I think we
> should rather clear both NETIF_F_FRAGLIST and NETIF_F_SG unconditionally since also
> header taggers use some form of skb_put() dont they?
The tail taggers use skb_put() as part of the routine to make room for
the tail tag.
Some of the header taggers use __skb_put_padto() when the packets are
too small (under ETH_ZLEN). When they are so small they are definitely
linear already.
We don't have a third form/use of skb_put().
next prev parent reply other threads:[~2021-07-15 13:12 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-14 19:17 [PATCH 0/2] Fixes for KSZ DSA switch Lino Sanfilippo
2021-07-14 19:17 ` [PATCH 1/2] net: dsa: tag_ksz: linearize SKB before adding DSA tag Lino Sanfilippo
2021-07-14 19:17 ` [PATCH 2/2] net: dsa: tag_ksz: dont let the hardware process the layer 4 checksum Lino Sanfilippo
2021-07-14 19:48 ` Vladimir Oltean
2021-07-14 20:15 ` Andrew Lunn
2021-07-15 6:54 ` Vladimir Oltean
2021-07-15 11:16 ` Aw: " Lino Sanfilippo
2021-07-15 11:49 ` Vladimir Oltean
2021-07-15 13:04 ` Aw: " Lino Sanfilippo
2021-07-15 13:12 ` Vladimir Oltean [this message]
2021-07-15 13:34 ` Lino Sanfilippo
2021-07-15 13:08 ` Andrew Lunn
2021-07-15 14:36 ` Vladimir Oltean
2021-07-15 15:50 ` Andrew Lunn
2021-07-19 8:20 ` Aw: " Lino Sanfilippo
2021-07-19 8:24 ` Vladimir Oltean
2021-07-15 16:24 ` Florian Fainelli
2021-07-15 23:23 ` [PATCH 0/2] Fixes for KSZ DSA switch Florian Fainelli
2021-07-16 8:49 ` Aw: " Lino Sanfilippo
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