1SKB_COPY_UBUFS(9)              Linux Networking              SKB_COPY_UBUFS(9)
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NAME

6       skb_copy_ubufs - copy userspace skb frags buffers to kernel
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SYNOPSIS

9       int skb_copy_ubufs(struct sk_buff * skb, gfp_t gfp_mask);
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ARGUMENTS

12       skb
13           the skb to modify
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15       gfp_mask
16           allocation priority
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DESCRIPTION

19       This must be called on SKBTX_DEV_ZEROCOPY skb. It will copy all frags
20       into kernel and drop the reference to userspace pages.
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22       If this function is called from an interrupt gfp_mask must be
23       GFP_ATOMIC.
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25       Returns 0 on success or a negative error code on failure to allocate
26       kernel memory to copy to.
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29Kernel Hackers Manual 3.10         June 2019                 SKB_COPY_UBUFS(9)
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