udp: Fold checking of splice flag into udp_mmh_splice_port()

udp_mmh_splice_port() is used to determine if a UDP datagram can be
"spliced" (forwarded via a socket instead of tap).  We only invoke it if
the origin socket has the 'splice' flag set.

Fold the checking of the flag into the helper itself, which makes the
caller simpler.  It does mean we have a loop looking for a batch of
spliceable or non-spliceable packets even in the case where the flag is
clear.  This shouldn't be that expensive though, since each call to
udp_mmh_splice_port() will return without accessing memory in that case.
In any case we're going to need a similar loop in more cases with upcoming
flow table work.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Stefano Brivio <sbrivio@redhat.com>

0 files changed, 0 insertions, 0 deletions