zerocopy_sg_from_iter (9) - Linux Manuals

zerocopy_sg_from_iter: Build a zerocopy datagram from an iov_iter

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.

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