1BUILD_SKB(9)                   Linux Networking                   BUILD_SKB(9)
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NAME

6       build_skb - build a network buffer
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SYNOPSIS

9       struct sk_buff * build_skb(void * data);
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ARGUMENTS

12       data
13           data buffer provided by caller
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DESCRIPTION

16       Allocate a new sk_buff. Caller provides space holding head and
17       skb_shared_info.  data must have been allocated by kmalloc The return
18       is the new skb buffer. On a failure the return is NULL, and data is not
19       freed.
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NOTES

22       Before IO, driver allocates only data buffer where NIC put incoming
23       frame Driver should add room at head (NET_SKB_PAD) and MUST add room at
24       tail (SKB_DATA_ALIGN(skb_shared_info)) After IO, driver calls
25       build_skb, to allocate sk_buff and populate it before giving packet to
26       stack. RX rings only contains data buffers, not full skbs.
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29Kernel Hackers Manual 2.6.         June 2019                      BUILD_SKB(9)
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