zerocopy_sg_from_iter9
Build a zerocopy datagram from an iov_iter
Usage
int zerocopy_sg_from_iter(struct sk_buff * skb, struct iov_iter * from);
Arguments
skb
buffer to copy
from
the source to copy from
Overview
The function will first copy up to headlen, and then pin the userspace pages and build frags through them.
Returns 0, -EFAULT or -EMSGSIZE.