Fix handling of ENOBUFS condition. During reception, the filled mbuf

cluster from the RX descriptor is passed up to the higher layers and
replaced with an empty buffer for the next time the descriptor comes
up in the RX ring. The xl_newbuf() routine returns ENOBUFS if it can't
obtain a new mbuf cluster, but this return value was being ignored.
Now, if buffer allocation fails, we leave the old one in place and
drop the packet. This is rude, but there's not much else that can be
done in this situation.

Without this, the driver can cause a panic if the system runs out of
MBUF clusters. Now it will complain loudly, but it shouldn't cause a
panic.

Also added another pair of missing newlines to some printf()s.

0 files changed, 0 insertions, 0 deletions