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Open Source and information security mailing list archives
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Date: Mon, 10 Jan 2022 11:37:21 +0000 From: "Bhandare, KiranX" <kiranx.bhandare@...el.com> To: "Lobakin, Alexandr" <alexandr.lobakin@...el.com>, "intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org> CC: Song Liu <songliubraving@...com>, Alexei Starovoitov <ast@...nel.org>, Andrii Nakryiko <andrii@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, John Fastabend <john.fastabend@...il.com>, "Brouer, Jesper" <brouer@...hat.com>, Yonghong Song <yhs@...com>, Jesper Dangaard Brouer <hawk@...nel.org>, KP Singh <kpsingh@...nel.org>, Jakub Kicinski <kuba@...nel.org>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "David S. Miller" <davem@...emloft.net>, Björn Töpel <bjorn@...nel.org>, "bpf@...r.kernel.org" <bpf@...r.kernel.org>, "Martin KaFai Lau" <kafai@...com> Subject: RE: [Intel-wired-lan] [PATCH v4 net-next 5/9] ice: respect metadata on XSK Rx to skb > -----Original Message----- > From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of > Alexander Lobakin > Sent: Wednesday, December 8, 2021 7:37 PM > To: intel-wired-lan@...ts.osuosl.org > Cc: Song Liu <songliubraving@...com>; Alexei Starovoitov <ast@...nel.org>; > Andrii Nakryiko <andrii@...nel.org>; Daniel Borkmann > <daniel@...earbox.net>; John Fastabend <john.fastabend@...il.com>; > Jesper Dangaard Brouer <brouer@...hat.com>; Yonghong Song > <yhs@...com>; Jesper Dangaard Brouer <hawk@...nel.org>; KP Singh > <kpsingh@...nel.org>; Jakub Kicinski <kuba@...nel.org>; > netdev@...r.kernel.org; linux-kernel@...r.kernel.org; David S. Miller > <davem@...emloft.net>; Björn Töpel <bjorn@...nel.org>; > bpf@...r.kernel.org; Martin KaFai Lau <kafai@...com> > Subject: [Intel-wired-lan] [PATCH v4 net-next 5/9] ice: respect metadata on > XSK Rx to skb > > For now, if the XDP prog returns XDP_PASS on XSK, the metadata will be lost > as it doesn't get copied to the skb. > Copy it along with the frame headers. Account its size on skb allocation, and > when copying just treat it as a part of the frame and do a pull after to "move" > it to the "reserved" zone. > net_prefetch() xdp->data_meta and align the copy size to speed-up > memcpy() a little and better match ice_costruct_skb(). > > Fixes: 2d4238f55697 ("ice: Add support for AF_XDP") > Suggested-by: Jesper Dangaard Brouer <brouer@...hat.com> > Suggested-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com> > Signed-off-by: Alexander Lobakin <alexandr.lobakin@...el.com> > Reviewed-by: Michal Swiatkowski <michal.swiatkowski@...ux.intel.com> > --- > drivers/net/ethernet/intel/ice/ice_xsk.c | 14 ++++++++++---- > 1 file changed, 10 insertions(+), 4 deletions(-) > Tested-by: Kiran Bhandare <kiranx.bhandare@...el.com> A Contingent Worker at Intel
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