struct sk_buff¶
sk_buff
is the main networking structure representing
a packet.
Basic sk_buff geometry¶
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dataref and headerless skbs¶
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Checksum information¶
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6.4.12-zen1-6.4.12-zen1-1-zen
sk_buff
is the main networking structure representing
a packet.
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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).
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