Re: [PATCH 2/2] net: dsa: tag_ksz: dont let the hardware process the layer 4 checksum

[Vladimir Oltean]

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().