table of contents
| 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¶
| June 2024 | Kernel Hackers Manual 3.10 |