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Date: Thu, 10 Mar 2022 12:10:07 +0100 From: Toke Høiland-Jørgensen <toke@...hat.com> To: Lorenzo Bianconi <lorenzo@...nel.org>, bpf@...r.kernel.org, netdev@...r.kernel.org Cc: davem@...emloft.net, kuba@...nel.org, ast@...nel.org, daniel@...earbox.net, brouer@...hat.com, pabeni@...hat.com, echaudro@...hat.com, lorenzo.bianconi@...hat.com, toshiaki.makita1@...il.com, andrii@...nel.org Subject: Re: [PATCH v4 bpf-next 1/3] net: veth: account total xdp_frame len running ndo_xdp_xmit Lorenzo Bianconi <lorenzo@...nel.org> writes: > Even if this is a theoretical issue since it is not possible to perform > XDP_REDIRECT on a non-linear xdp_frame, veth driver does not account > paged area in ndo_xdp_xmit function pointer. > Introduce xdp_get_frame_len utility routine to get the xdp_frame full > length and account total frame size running XDP_REDIRECT of a > non-linear xdp frame into a veth device. > > Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org> Acked-by: Toke Høiland-Jørgensen <toke@...hat.com>
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