1SKB_COW_HEAD(9)                Linux Networking                SKB_COW_HEAD(9)
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NAME

6       skb_cow_head - skb_cow but only making the head writable
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SYNOPSIS

9       int skb_cow_head(struct sk_buff * skb, unsigned int headroom);
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ARGUMENTS

12       skb
13           buffer to cow
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15       headroom
16           needed headroom
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DESCRIPTION

19       This function is identical to skb_cow except that we replace the
20       skb_cloned check by skb_header_cloned. It should be used when you only
21       need to push on some header and do not need to modify the data.
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24Kernel Hackers Manual 3.10         June 2019                   SKB_COW_HEAD(9)
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