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moment if its not "ethernet" its marked as wireless. We will need some
extra info if we ever branch out into non-ethernet, non-wireless lans.
Might also want to record what kind of wireless lans at some point?

Poller for this purpose. This works only on the FreeBSD 4.9 image in which
Mike has now incorporated a bpf fix (http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/64178)
Another bugfix (http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/64718)
should also be incorporated but will not cause problems with nse since we no longer
use BIOCSSEESENT flag anymore.

create_image script. Also check path; filename must translate to a path
on /proj, /users, or /groups since the image is actually written from
the node, and those are the only places it makes sense to write them to.

Minor change to web interface; email error messages to user *and* to
tbops; was going only to tbops.

links.

Now it is treaded just like ECONNRESET.

Also, don't clobber the read errno with the intermediate sigsetmask call
(though it should never fail and errno should never be affected)

Change warn() to warning() to avoid conflict with standard BSD library
routine.  This showed up when statically linking capture.

dump. I need to add more stuff though.

for now I am leaving max_speed slot of interface_types table in place.

* ptopgen:

   1. Change to using interface_capabilities table to get the default
      speed for an interface type.

   2. The wrinkle is that an interface can have multiple speeds,
      depending on the protocol that is requested. In the wireless case the
      table looks like:

	| type             | capkey            | capval               |
	+------------------+-------------------+----------------------+
	| ath              | protocols         | 80211a,80211b,80211g |
	| ath              | 80211a_defspeed   | 54000                |
	| ath              | 80211b_defspeed   | 11000                |
	| ath              | 80211g_defspeed   | 54000                |

   3. We use the above info to tell us the default speed for links, based
      on the particular protocol.

   4. And lastly, create "air" switches for each of 80211a, 80211b, 80211g,
      and specify links from the switches to the nodes that have interfaces
      that support those protocols. At the moment, there is a hardwired
      list of 80211a, 80211b, 80211g in ptopgen, so create 3 new air
      switches and links from each of the nodes to each of the switches.
      Rob says that assign can handle this just fine (using the same
      interface on a node to connect to three different air switches, at
      different speeds).

* assign_wrapper:

   1. First off, I had to increase the bogousity factor of how we determine
      that a delay node is required (requires_delay() routine) on a link or
      lan. Using the interface_capabilities table, I determine the default
      speed for each protocol on each interface type.

   2. When calling requires_delay() I now the pass the lan so that we can
      get the "protocol" of the link/lan and use that to find the default
      speed. The main reason for all this crud is that if a user specifies
      a bandwidth of 54Mb on a wired ethernet, we want to make sure we
      insert a delay node, but not if the user is using 80211g. As it was,
      delay nodes would be skipped cause there are now nodes with
      interfaces that support those speeds. This change also allows to know
      that a delay node should be inserted on a wireless link, if we ever
      wanted to do something as silly as that!

   3. Okay, so now onto the actual wireless support!  Whenever the protocol
      for a lan is not "ethernet" spit out links to fake lan nodes, sorta
      like we used to do with ethernet lans before Rob made all those great
      changes to assign. So, a lan with protocol 80211a will get fake links
      to the 80211a air switch that ptopgen spits out (see above).  We
      currently bypass all delay node processing on wireless lans, and in
      fact we avoid most post-processing (after assign) of wireless lans
      (no vlans, veths, etc). At some point we can bring certain things
      back in (like emulated links) but that will be some time! See
      comments above about ptopgen.

   4. Added a section to copy over the virt_lan_settings and
      virt_lan_member_settings to the interface_settings table, for each
      node's interfaces in the mapped experiment. I also make up the ssid
      for the lan, and add the protocol to the settings so that the client
      side knows what it is supposed to do. I also set the acesspoint since
      that requires MAC addresses, and this is easiest place to get and set
      the MAC (all of the nodes in a lan need to know the MAC of the node
      acting as the access point). In the virtual topology, the accesspoint
      is specified as a node name.

* tbsetup/ns2ir:

   1. Add tb-set-lan-protocol(lan, protocol) to set the protocol to one of
      ethernet, 80211a, 80211b, 80211g. Defaults to ethernet.

   2. Add tb-set-lan-accesspoint(lan, accesspoint) to set the name of the
      access point for a lan. Obviously this makes sense for only wireless
      links; ignored for wired links.

   3. Add tb-set-lan-setting(lan, setting, value) to specify a setting that
      applies to the entire lan. At present, these are ignored for wired
      lans. Both setting and value are strings.

   4. Add tb-set-node-lan-setting(lan, node, setting, value) to specify a
      setting that applies to a particular node in a lan. At present, these
      are ignored for wired lans. Both setting and value are strings.

Remove isadmin() restriction from floormap pages; at some point I
assume we make the floormaps publically available.

Make MEB the default argument to the floormap page until such time
that we need something fancier.

Add a link to the wireless tutorial I am currently throwing up onto
paper.

places. Change $short optional argument to a flags argument, and add a
NOPERM flag, which allows display of a node to people without
permission to view that node. The display is cut back to node type,
and a couple of other things that are not private. I also added a
section on the Interfaces of a node, using the interfaces table for
the node, joined with the interface_types and interface_capabilities
tables. This gives more specific information about a node then is
possible using the generic node_types table.

that can specified in the XML.

the 3rd and 4th floor maps.

no freebsd support.

The primary change is that tmcd now sends down a list of setting to
apply to each interface, and that list is turned into a hash table,
and provided to rc.config, which passes them along to the machine
dependent routine in liblocsetup.

Then in the linux version of liblocsetup there is a bunch of new code
to configure wireless links using iwconfig and iwpriv, using the
settings array.

All of this is bound to change once we get more experience with it.

mentions you need to restart the event system to fire off the start
command again.

Currently, you cannot name the startcmd in a tevc command cause its
name is unknown. Something to do with how objects are renamed in the
parser and that they are not done below top level (inside a
subroutine). Not sure how you get around that.

there is not default imageid, so it can generate an error!

arbitrary interface settings associated with the virtual part of the
topology.

Declaring the host is not required.
Point to internals slides.

where we do other interface table cleanup).

* Return interface_settings info for the node, across all interfaces
  for which there is info in the interface_settings table.

* Prepend tags; INTERFACE and INTERFACE_SETTINGS to make it possible
  to tell them apart at the client.

intuit the default value from BOSSNODE .

settings to the nodes when they configure their interfaces. Added primarily
for wireless interface support.

not to run linktest.