udp: Split spliced forwarding path from udp_buf_reply_sock_data()

udp_buf_reply_sock_data() can handle forwarding data either from socket
to socket ("splicing") or from socket to tap.  It has a test on each
datagram for which case we're in, but that will be the same for everything
in the batch.

Split out the spliced path into a separate udp_sock_to_sock() function.
This leaves udp_{buf,vu}_reply_sock_data() handling only forwards from
socket to tap, so rename and simplify them accordingly.

This makes the code slightly longer for now, but will allow future cleanups
to shrink it back down again.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
[sbrivio: Fix typos in comments to udp_sock_recv() and
 udp_vu_listen_sock_data()]
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

0 files changed, 0 insertions, 0 deletions