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Date: Fri, 11 Feb 2022 17:04:14 -0800 From: Jakub Kicinski <kuba@...nel.org> To: Lorenzo Bianconi <lorenzo@...nel.org> Cc: bpf@...r.kernel.org, netdev@...r.kernel.org, davem@...emloft.net, ast@...nel.org, daniel@...earbox.net, brouer@...hat.com, toke@...hat.com, pabeni@...hat.com, echaudro@...hat.com, lorenzo.bianconi@...hat.com, toshiaki.makita1@...il.com, andrii@...nel.org Subject: Re: [PATCH bpf-next 2/3] veth: rework veth_xdp_rcv_skb in order to accept non-linear skb On Fri, 11 Feb 2022 02:20:31 +0100 Lorenzo Bianconi wrote: > + if (skb_shared(skb) || skb_head_is_locked(skb)) { Is this sufficient to guarantee that the frags can be written? skb_cow_data() tells a different story.
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