SKB_COPY_UBUFS(9) Linux Networking SKB_COPY_UBUFS(9) NAME skb_copy_ubufs - copy userspace skb frags buffers to kernel SYNOPSIS int skb_copy_ubufs(struct sk_buff * skb, gfp_t gfp_mask); ARGUMENTS skb the skb to modify gfp_mask allocation priority DESCRIPTION This must be called on SKBTX_DEV_ZEROCOPY skb. It will copy all frags into kernel and drop the reference to userspace pages. If this function is called from an interrupt gfp_mask must be GFP_ATOMIC. Returns 0 on success or a negative error code on failure to allocate kernel memory to copy to. COPYRIGHT Kernel Hackers Manual 3.11 November 2013 SKB_COPY_UBUFS(9)[top]
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