skb_copy_ubufs(9) - phpMan
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)
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