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
struct sk_buff * skb
buffer to copy
struct iov_iter * 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.