blob: b4a008feceb43e96589eebd950f5f15f700f7e99 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
.. 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).
|
