commit ad6295aecbb1cd0ab9e026f951b24b9a7a59bd42

Author: Jarod Wilson <jarod@redhat.com>

Date:   Tue Jun 26 09:35:08 2018 -0400

    Fix MTU limiting for IPoIB in datagram mode

    RHEL-only

    Signed-off-by: Jarod Wilson <jarod@redhat.com>

diff --git a/redhat/rdma.ifup-ib b/redhat/rdma.ifup-ib

index bb4d4f71..3779e13f 100644

--- a/redhat/rdma.ifup-ib

+++ b/redhat/rdma.ifup-ib

@@ -117,7 +117,7 @@ if [ -e /sys/class/net/${DEVICE}/mode ]; then

         echo datagram > /sys/class/net/${DEVICE}/mode

 	# cap the MTU where we should based upon mode

 	[ -z "$MTU" ] && MTU=2044

-	[ "$MTU" -gt 2044 ] && MTU=2044

+	[ "$MTU" -gt 4092 ] && MTU=4092

     fi

 fi