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Jakub Kicinski
25bfb3a8ed
checksum-offloads.rst seems like a better place to render the checksum comment than skbuff.rst. Remove the stale references to sections in that comment (it no longer has A, B, C, D, E sections). Reviewed-by: Willem de Bruijn <willemb@google.com> Link: https://patch.msgid.link/20260526160151.2793354-10-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
32 lines
889 B
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32 lines
889 B
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.. SPDX-License-Identifier: GPL-2.0
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struct sk_buff
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==============
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:c:type:`sk_buff` is the main networking structure representing
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a packet.
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Basic sk_buff geometry
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----------------------
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.. kernel-doc:: include/linux/skbuff.h
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:doc: Basic sk_buff geometry
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Shared skbs and skb clones
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--------------------------
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:c:member:`sk_buff.users` is a simple refcount allowing multiple entities
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to keep a struct sk_buff alive. skbs with a ``sk_buff.users != 1`` are referred
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to as shared skbs (see skb_shared()).
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skb_clone() allows for fast duplication of skbs. None of the data buffers
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get copied, but caller gets a new metadata struct (struct sk_buff).
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&skb_shared_info.refcount indicates the number of skbs pointing at the same
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packet data (i.e. clones).
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dataref and headerless skbs
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---------------------------
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.. kernel-doc:: include/linux/skbuff.h
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:doc: dataref and headerless skbs
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