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 4.8.                 January 2017                         SKB_COPY_UBUFS(9)