Name
zerocopy_sg_from_iter —
Build a zerocopy datagram from an iov_iter
Synopsis
int zerocopy_sg_from_iter ( | struct sk_buff * skb, |
| | struct iov_iter * from); |
Arguments
skb
buffer to copy
from
the source to copy from
Description
The function will first copy up to headlen, and then pin the userspace
pages and build frags through them.
Returns 0, -EFAULT or -EMSGSIZE.