32 lines
1.2 KiB
Diff
32 lines
1.2 KiB
Diff
From d16697cb6261d4cc23422e6b1cb2759df8aa76d0 Mon Sep 17 00:00:00 2001
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From: Lorenzo Bianconi <lorenzo@kernel.org>
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Date: Fri, 21 Jan 2022 11:09:44 +0100
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Subject: [PATCH] net: skbuff: add size metadata to skb_shared_info for xdp
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Introduce xdp_frags_size field in skb_shared_info data structure
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to store xdp_buff/xdp_frame frame paged size (xdp_frags_size will
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be used in xdp frags support). In order to not increase
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skb_shared_info size we will use a hole due to skb_shared_info
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alignment.
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Acked-by: Toke Hoiland-Jorgensen <toke@redhat.com>
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Acked-by: John Fastabend <john.fastabend@gmail.com>
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Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
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Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
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Link: https://lore.kernel.org/r/8a849819a3e0a143d540f78a3a5add76e17e980d.1642758637.git.lorenzo@kernel.org
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Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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---
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include/linux/skbuff.h | 1 +
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1 file changed, 1 insertion(+)
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--- a/include/linux/skbuff.h
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+++ b/include/linux/skbuff.h
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@@ -568,6 +568,7 @@ struct skb_shared_info {
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* Warning : all fields before dataref are cleared in __alloc_skb()
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*/
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atomic_t dataref;
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+ unsigned int xdp_frags_size;
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/* Intermediate layers must ensure that destructor_arg
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* remains valid until skb destructor */
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