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- .. SPDX-License-Identifier: GPL-2.0
- struct sk_buff
- ==============
- :c:type:`sk_buff` is the main networking structure representing
- a packet.
- Basic sk_buff geometry
- ----------------------
- .. kernel-doc:: include/linux/skbuff.h
- :doc: Basic sk_buff geometry
- Shared skbs and skb clones
- --------------------------
- :c:member:`sk_buff.users` is a simple refcount allowing multiple entities
- to keep a struct sk_buff alive. skbs with a ``sk_buff.users != 1`` are referred
- to as shared skbs (see skb_shared()).
- skb_clone() allows for fast duplication of skbs. None of the data buffers
- get copied, but caller gets a new metadata struct (struct sk_buff).
- &skb_shared_info.refcount indicates the number of skbs pointing at the same
- packet data (i.e. clones).
- dataref and headerless skbs
- ---------------------------
- .. kernel-doc:: include/linux/skbuff.h
- :doc: dataref and headerless skbs
- Checksum information
- --------------------
- .. kernel-doc:: include/linux/skbuff.h
- :doc: skb checksums
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