Checkpoint my DB changes so I can do some testing on boss.
* Add vnode0,vnode1 slots to the delays table. This will allow us to match ipfw pipes to nodes after swapin, hopefully allowing us to control the delays for lans in addition to duplex links. * Add IPaliases to interfaces table. Used in assign_wrapper when constructing "emulated" links, which will share a link via the use of aliases on the interface. This is a comma separated list of IP addresses (no, I refuse to make this a separate table!). * Add virtnode_capacity slot to node_types, defaults to zero. This is used in ptopgen for determining how many virtnodes fit on a real node. I have not thought this through completely, but it allows me to make progress on other fronts. * Add linkdelays delays, which sorta resembles the delays table, only this table stores oneway delays links, to be set up on the endpoints of a link or lan. Also, instead of being based on ipfw bridge rules, it is based on IP address/mask rules. At some point this table may merge witk the delays table, but will take time to work out the details and I do not want to mess up existing experiments by changing the delays table! Anyway, a duplex link gets one of these for each endpoint (a xmit ipfw rule). To mimic our lan setup, lan links get two, an xmit *and* a recv rule. My hope is that link delays will look just like normal delays (a packet leaving a node for a lan will get the outgoing delay, and a packet arriving gets the incoming delay).