tree 731bbb97c981389fd04684714214b18388ec8b41
parent 521e575b9a7324a0bca762622139f69582a042bf
author Ron Livne <ronli@voltaire.com> 1216104528 -0700
committer Roland Dreier <rolandd@cisco.com> 1216104528 -0700

IPoIB: Use multicast loopback blocking if available

Set IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK for IPoIB's UD QPs if
supported by the underlying device.  This creates an improvement of up
to 39% in bandwidth when sending multicast packets with IPoIB, and an
improvment of 12% in cpu usage.

Signed-off-by: Ron Livne <ronli@voltaire.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>