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Date: Sat, 8 Jan 2022 12:53:04 +0100 From: Lorenzo Bianconi <lorenzo@...nel.org> To: bpf@...r.kernel.org, netdev@...r.kernel.org Cc: lorenzo.bianconi@...hat.com, davem@...emloft.net, kuba@...nel.org, ast@...nel.org, daniel@...earbox.net, shayagr@...zon.com, john.fastabend@...il.com, dsahern@...nel.org, brouer@...hat.com, echaudro@...hat.com, jasowang@...hat.com, alexander.duyck@...il.com, saeed@...nel.org, maciej.fijalkowski@...el.com, magnus.karlsson@...el.com, tirthendu.sarkar@...el.com, toke@...hat.com Subject: [PATCH v21 bpf-next 01/23] net: skbuff: add size metadata to skb_shared_info for xdp Introduce xdp_frags_size field in skb_shared_info data structure to store xdp_buff/xdp_frame frame paged size (xdp_frags_size will be used in xdp multi-buff support). In order to not increase skb_shared_info size we will use a hole due to skb_shared_info alignment. Acked-by: Toke Hoiland-Jorgensen <toke@...hat.com> Acked-by: John Fastabend <john.fastabend@...il.com> Acked-by: Jesper Dangaard Brouer <brouer@...hat.com> Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org> --- include/linux/skbuff.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 642acb0d1646..d6d2ca936ddf 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -539,6 +539,7 @@ struct skb_shared_info { * Warning : all fields before dataref are cleared in __alloc_skb() */ atomic_t dataref; + unsigned int xdp_frags_size; /* Intermediate layers must ensure that destructor_arg * remains valid until skb destructor */ -- 2.33.1
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