Archive for the ‘NetworkManager’ Category

If you have a Sony Ericsson MD300…

Thursday, March 12th, 2009

Please send me the output of the “AT+CGMM” command using minicom or something like that.  You won’t regret it.

Test it. Test it now.

Friday, March 6th, 2009
I WANT YOU to test NETWORKMANAGER 0.7.1

Do your part for Economic Stimulus!  You know you can’t deny Uncle Sam.

NetworkManager nm-applet NetworkManager-vpnc NetworkManager-openvpn

NetworkManager-pptp NetworkManager-openconnect

Or test out packages by your favorite distro.  If they don’t have testing packages for 0.7.1-rc3 already, they are lame.  Fedora packages here for F9 and F10.

Suspend/resume vs. NetworkManager

Thursday, February 26th, 2009

private-island

The other day while chilling beside the pool on my private island (A), I decided to head into Port Nelson (B) to check up on my various offshore accounts.  Financial crisis and all you see; that Stanford thing last week really had me worried.  A laptop hibernation and a short helicopter ride later, I’m in the branch office and need to look up a few things pertaining to my net worth.  But upon resume, NetworkManager started reconnecting to my villa’s access point, which was all the way back on my island. WTH!!!??!?!

This problem has been around for a long time.  Pretty much since the beginning of time.  I looked at it last year and concluded that it wasn’t NetworkManager.  This time it really annoyed me, so I made a bet with my porter that I’d figure it out by time I left to hit up this party in Bailey Town.  He’s cool like that.  I got to keep my money.  It still wasn’t NetworkManager.

See, drivers timestamp wifi networks they know about.  That way you can figure out if the network was last seen a second ago, 7 seconds ago, or so long ago that it’s dead to me.  But they all use an kernel counter called ‘jiffies’ to do that.  And ‘jiffies’ doesn’t increment across suspend/resume.  See where I’m going with this?

So the next scan after resume, all the old networks are mixed in with the new networks, and you simply can’t tell which ones are old and which ones are new.  They all look like they were scanned within the past 10 seconds.  The last AP you were connected to looks like a great candidate to try, no matter where it is.

Abusing people as a metaphor for scan results:

new scan results are awesome

WANT
(with apologies to Imansyah)

old scan results suck

DO NOT WANT

The solution is to age the scan results with the amount of time spent in suspend.  This keeps both normal laptops (where you’ll usually be suspended for a while) and OLPC-style laptops (where suspend can happen for sub-second durations) happy.  The patches are queued for 2.6.30, and I’ve backported them to 2.6.27, 2.6.28, and 2.6.29.  They are also a prerequisite for making NetworkManager just try harder to associate when the connection fails, which I know annoys a lot of people, including myself.

Problem solved, party attended.

The big lesson?  When something is wrong with the drivers, fix the drivers. Don’t hack around it like a helpless tool.  And if you can’t fix the driver, well… then why did mindlessly stuff $50 bills into Broadcom’s thong in the first place?

Everyone gets a NetworkManager!

Monday, December 15th, 2008

He's a fan of NetworkManager 0.7
He’s a fan of NetworkManager 0.7!
(photo by exfordy, reused under cc attriubtion 2.0)

I’m pleased to formally announce the release of NetworkManager 0.7, after about 2 years of development.  You asked, we delivered.  Top feature requests for 0.6 were:

  • Static IP
  • Mobile broadband
  • Multiple active devices
  • Internet Connection Sharing
  • Networking at boot / across logins
  • A connection editor

How did we do?  100% baby! With this much awesome, little Susie and Paul certainly won’t be disappointed to find NetworkManager 0.7 goodness under the tree on Christmas morning.  You can get the new hotness in your latest distro, or download tarballs of the applet and the core daemon.

There will be a 0.7.1 release pretty soon to fix up a few issues and add a few things we didn’t quite get to until now.  After that, it’s full afterburner towards NetworkManager 0.8, where we’ve got some great stuff in the works, like Bluetooth, full IPv6, and yet more mobile broadband enhancements.  Come and get it.

The Road to NetworkManager 0.7

Sunday, July 20th, 2008

Let’s start off with an artsy photo1 and an obscure-but-related caption2, becuase that’s the trendy thing to do these days on a blog:

Door (Thumb)

Almost home…

We’ve been working on NetworkManager 0.7 for almost 2 years; it’s been on the rotiesserie’s tasty-slow-cook setting for a long time.  And it’s so close to being done that your Mom is already yelling at you to stop pounding the little kids from across the street and come inside for dinner.  I’ve put up a wiki page with some work items for the NM 0.7 release. This list is by no means complete.  But in the interest of not being a black hole let’s get the stuff out in public and hey, maybe some patches will even show up on networkmanager-list@.  The driving features have been done for a few weeks now, and what’s left are a few UI things, and lots library best-practices stuff like documentation, symbol visibility, API review, and bug fixes.

But what’s not on the list?

  • Bluetooth: a bunch of work, but will be a major driver of 0.7.1 or 0.7.5
  • IPv6: probably won’t be ready by the time 0.7 ships
  • Your broken driver: it’s in the same place as your mom, in a gimp suit in my basement.  Some things just don’t cooperate; you have to keep ‘em in the dark and learn ‘em with a whip until they stop acting up.

but don’t worry, these will get fixed up over time.

As a bonus, I ported the PPTP VPN plugin to the 0.7 API over the weekend.  You’re welcome. Enjoy.  File bugs.  Await the release of 0.7 breathlessly.

1 To show you how cool I am because I can take photos

2 To show you how cool I am because I can write witty captions

Great Taste, Less Filling

Wednesday, June 11th, 2008

Or, how NetworkManager 0.7 transcends decadence and totally respects your distro’s persistent network configuration if you want it to.

With NetworkManager 0.7, the system settings service provides system-wide network configuration, allowing network connections at boot time and across login or fast user switches.  It also reads your distro-specific config files (there are plugins for Fedora and OpenSUSE right now, and an Ubuntu one in-progress) and thus integrates with your normal workflow doesn’t try to re-invent the wheel.  So to put it differently, NetworkManager 0.7 does not ignore your distro configuration unless you really want it to.

Full of Easy

Tambet fully anticipated the decadence of which Alberto Ruiz speaks and wrote the ‘keyfile’ system settings plugin.  We’ve said that if you want a cross-distro persistent, human-readable, text-based network configuration format for interfaces, VPN, 3G, PPP, etc, you can use the keyfile plugin instead of your distro’s format.  A certain class of users really benefits from this.  The other class can just get on with their life and not care what the backend format is, because it simply doesn’t matter to them.  Everyone is happy.

Time for Change

During the 0.7 cycle the new features we added (connection sharing, multiple active devices, 3G to name a few) were pushing the applet’s menu-based design to the limit.  It neither looks good nor behaves well to cram multiple devices and multiple connections into the menu.  Thus, back in January 2008, we asked Bryan Clark and Mike Langlie to come up with some design ideas for an nm-applet that doesn’t suck.  The most intriguing mockup was window-based, which allows for much more streamlined interaction than the menu:

new applet mockup

It’s a mockup.  It deserves your love, not your flames.

Right away you’ll probably notice:

  • Simple yet convenient: you have both a general overview of your system, but you’re not punched in the face with stuff you don’t care about.  Just like the current applet, but better.  If you want more info, it’s just a click away.
  • Disconnect at will: you can already disconnect devices in NM 0.7 (the D-Bus API is there), but adding a disconnect option for every device in the current menu sucks.  Since this isn’t a GtkMenu, there’s a lot more room to play with.
  • Dynamicity ™: since it’s not a  GtkMenu, it can update things like device state, signal strength, and addresses dynamically.
  • Only shows what you care about: the current applet shows everything around you.  99% of the time, you care about only one or two of those networks, the ones you actually use.  The other 1% of the time, you want to connect to a network you’ve never connected to before.  Why show all 32 other networks all the time, and make you search for the one you want?  Uncool.
  • More information if you want it: but not if you don’t.  Becuase there’s more space to work with, we can show stuff you might care about, like the IP address of the device, or the security features of the wifi network you’re current connected to.
  • Streamlined Connection Sharing: given the larger layout and ability to tie relevant actions to a specific device, it’ll be a lot clearer to “Share this connection” than the current applet allows.

But as always, it’s a delicate balance between making the stuff you use every day prominant and easy to get to, and keeping the stuff you use only a few times a week out of your way.  I like the fact that I don’t have to care about what I’m connected to, I just want to stay connected and keep working on making stuff awesome.  I don’t want or need to know what the IP address of my VPN server is, for example, or whether my AP uses AES+CCMP for both the pairwise and group ciphers instead of AES+CCMP for the pairwise cipher and TKIP for the group cipher.  But if you really want that information, you should be able to find it within a click or two.

But windows don’t just go away when click outside them.  We could grab the pointer and close the window when you click elsewhere, but that might be weird.  It might also be weird to make this window act like and be positioned in the same place as the current popup GtkMenu, a la gnome-main-menu.  Maybe we should use effect bling to make the window genie out of the NM icon.  It’s something that needs to be prototyped and tested so we can figure out how it feels before we commit to it.  But we’ve been so busy making NetworkManager 0.7 Just Work for you that it’s taken longer than I’d like to start rewriting the applet.  Comments?  Jump #nm on freenode and discuss.

Stop, Collaborate, and Listen

Wednesday, June 4th, 2008

We’ve settled on #nm on freenode as the NetworkManager IRC channel.  Stop by and bitch, moan, rave, flame, suggest, request, patch, anything you like.

Anything less than the best is a felony

Wednesday, April 16th, 2008

Pedal to the metal on the way to NetworkManager 0.7.

Connection Editor

Tambet and I have landed the last real bits of Add/Edit and gotten the pages pretty much finished. The applet and the connection editor retrieve and fill in your passwords too.

Connection Editor Page Montage

Contribute Back to the Community (or, Unmanaged Devices)

A few weeks back, I added an unmanaged devices interface to the system settings service. With 0.6.x, the most often asked question is “I’m an Ubuntu user; why can NM find my network device?”. This was for two reasons: (1) because Ubuntu ships a bunch of shady out-of-kernel wireless drivers (at76, prism2_usb, acx, madwifi, ndiswrapper) that often just don’t implement WEXT correctly and therefore won’t work well with wpa_supplicant, and therefore won’t work with NetworkManager, and (2) Ubuntu patched NetworkManager so that most devices in /etc/network/interfaces are ignored by NM, instead of helping to fix up the Debian backend to proxy that configuration so NM could have a chance to manage the device. So when anything goes wrong, the user is encouraged to configure the device in “Manual” mode instead, and it disappears from NetworkManager.

With 0.7, the system settings plugin for your distro will recognize these devices, tell NetworkManager they aren’t supposed to be managed, and the applet will make you aware of the horror of what you’ve just done :)

(as an aside, distros need to help push drivers and patches upstream, not stuff random bits into the kernel and hope everything is kittens and roses and puppy dogs tails and bright copper kettles and warm woolen mittens)

Network Before Login

So this time around, distros can write much more capable plugins to proxy their native config files to NetworkManager connections, and they will just show up in the menu. It also makes the connections available at boot. Static IPs, custom DNS servers, and whatever other crack you’d like to inflict on your network adapter. Both Fedora and SUSE have plugins, and Tambet just wrote a GKeyFile plugin that stores connections in a legacy-free/crack-free format too.

Other Hotness:

  • Users are notified of VPN failures and what might have gone wrong
  • Static WEP keys on indexes other than 1
  • PPPoE
  • Wired 802.1x
  • Your Mom

Next up: making the serial driver code more robust, fix bugs, fix up ad-hoc Wifi, and fix more bugs. But 0.7 is already cooking MCs like a pound of bacon.

Find all the connections, get a gold star.

Monday, March 3rd, 2008

No! No! Too sexy, too sexy!! [1]

 

For the numerically impaired, there are four. Coming soon to Fedora 9 and an SVN server near you.

 

[1] yeah, it kinda looks like ass, but we’re working on that

So much Just Works it hurts…

Tuesday, February 19th, 2008


Which one is right for you?

There’s now an addition to the HAL specification identifying mobile broadband cards, and a hot new hal-info package (20080215) that contains the necessary .fdi file for most of the cards directly supported in Linux.  This specification helps NetworkManager and other tools identify that (a) the card is really a modem instead an unconnected serial port, and (b) whether it’s a GSM or a CDMA modem.  I also updated NetworkManager SVN to work with the new spec.  Plug it in, watch it work, be happy.