OT: github.com version of NDISulator

2014-12-11 Thread Nikos Vassiliadis

Hi,

I have to use ndisulator for my wifi card and the one in base panics
the kernel. I read that the fork(?) at github has got some bugs
fixed and I'd like to try it out. It doesn't compile on 10-STABLE.
Would somebody on this list have any ideas about it?

Thanks,
Nikos
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Re: EM(4) - Link flap when bridged and adding members (em bridge flap)

2014-12-11 Thread Roger Pau Monné
El 10/12/14 a les 19.25, Ryan Stone ha escrit:
>>From a quick look at the code, whenever an interface is added to a
> bridge, if that interface does not support a feature currently enabled
> on the bridge then it has to disable that feature on all member
> interfaces of that bridge.  That would re-init the em interface, which
> would cause a link flap.

This is something specific to the em driver implementation I guess,
because I've tried it with other drivers (bge and bce) and the
connection is not dropped when the normalization of options happens.

Roger.

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Re: Adding new media types to if_media.h

2014-12-11 Thread Eric Joyner
Any other thoughts, or should I start looking at seeing what I can take
copy from net80211?

Also adding -net, since this is pretty relevant.

On Tue, Dec 9, 2014 at 10:40 AM, Adrian Chadd  wrote:
>
> On 9 December 2014 at 07:27, Rui Paulo  wrote:
> > On Dec 9, 2014, at 01:05, Eric Joyner  wrote:
> >>
> >> This is a continuation of a discussion from off the list:
> >>
> >> ixgbe needs to support devices with media types that aren't in
> if_media.h;
> >> for now those are 10GBaseKR, 10GBaseKX4, and 1000baseKX. Immediately,
> we're
> >> running into the issue that there is no room for all of these types
> under
> >> the IFM_ETHER category; there's only room for two more (and per John
> >> Baldwin, only one more if one of those two unused types is to be used
> for a
> >> reserved type). Long term, there are going to be tons of media types for
> >> future ethernet speeds like 25G, 50G, 100G, and etc, and ixl already
> >> supports media types that aren't in if_media.h, either.
> >>
> >> So, something needs to change. Does anyone have any thoughts on what
> should
> >> happen? I've thought of a few things, but I don't have an adequate
> grasp of
> >> what the pros/cons of each are:
> >>
> >> 1. Add a new media category (like IFM_ETHER) and change kernel code to
> >> treat it like the existing IFM_ETHER. This creates ~28 new media types
> we
> >> can use, but it may just be delaying the inevitable for a short time.
> >>
> >> 2. Extend media value from 32-bits to 64-bits. I don't have a good idea
> of
> >> what the consequences are of this on architectures that aren't amd64.
> >>
> >> 3. (Initially suggested by Adrian) would be to create a new media type
> >> struct (instead of using an int value) or adding an extra value to the
> >> existing ifmedia/ifmedia_entry struct for this. This sounds like the
> best
> >> solution to me, but I don't know how much effort it would take to
> implement
> >> -- does ifconfig need a lot of changing to handle this?
> >
> > ifconfig is a macro-intensive application, so maybe it's not that much
> work.
> >
> >> Thoughts? Any previous discussions worth looking at?
> >
> > Hmm, it looks like you're limited in the number of bits because of how
> the word was laid out. We can't simple remove token ring and get more bits
> for ethernet...  We could create another IFM_40GETHERNET type to replace
> token ring but that would be ugly (the IFM_TYPE() macro could handle this
> idiosyncrasy).
> >
> > I think if_media should probably be a structure with unions to store the
> subtypes.  net80211 has the same problem with MCS rates and we ended up
> storing them outside if_media because of this.
>
> I think solving this like how it's done in net80211 (ie, with an
> external structure that represents the media type details for a given
> media) is the right thing to do.
>
> Otherwise it'll be a path to madness in the future.
>
> The net80211 side of things is mostly extensible and I'm going to
> (eventually) end up using it for the 11ac rates that have shown up. I
> couldn't do that whilst trying to cram it into the existing ifmedia
> variable.
>
>
> -adrian
>
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