RE: [patch] d80211: use pfifo_qdisc_ops rather thand80211-specificqdisc
On Fri, 2006-11-03 at 11:23 -0800, Simon Barber wrote: > I would > think the master device is the perfect place to do packet capture, Sort of. Since it'll be an 802.11 protocol thing, you won't be getting any signal strength information etc. You really do need that. > and > raw packet transmission. Same here, you really do want to be able to submit a frame with the bitrate to use etc. All not part of 802.11. All the meta info you want from RX or need for proper TX cannot be transported over that master netdev since it'll have a proper 802.11 protocol, so it's pretty much useless. johannes signature.asc Description: This is a digitally signed message part
Re: [patch] d80211: use pfifo_qdisc_ops rather thand80211-specificqdisc
On Fri, Nov 03, 2006 at 11:29:33AM -0800, Simon Barber wrote: > I should elaborate - if 802.11 is made into a real protocol - then raw > packet capture works correctly on the master device. (raw sockets opened > on the device see all frames before they are passed to the protocol). > This is the right way to go. There is some merit to this idea. Then we could attach IBSS, WDS, STA, or AP sub-interfaces (with or without ethernet encapsulation) in a manner similar to how VLAN sub-interfaces are attached to ethernet devices today. Of course, I seem to remember ranting against that model a few months ago. I'll just wave my hands and call it pragmatism... :-) John -- John W. Linville [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [patch] d80211: use pfifo_qdisc_ops rather thand80211-specificqdisc
I should elaborate - if 802.11 is made into a real protocol - then raw packet capture works correctly on the master device. (raw sockets opened on the device see all frames before they are passed to the protocol). This is the right way to go. Simon -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Simon Barber Sent: Friday, November 03, 2006 11:24 AM To: Johannes Berg; Stephen Hemminger Cc: Christoph Hellwig; James Ketrenos; John W. Linville; Jeff Garzik; Patrick McHardy; David Kimdon; netdev@vger.kernel.org Subject: RE: [patch] d80211: use pfifo_qdisc_ops rather thand80211-specificqdisc I'm not sure why we don't use the master device for packet capture - I can't think of any good reason for requiring a separate device. I would think the master device is the perfect place to do packet capture, and raw packet transmission. Simon -Original Message- From: Johannes Berg [mailto:[EMAIL PROTECTED] Sent: Thursday, November 02, 2006 2:57 PM To: Stephen Hemminger Cc: Simon Barber; Christoph Hellwig; James Ketrenos; John W. Linville; Jeff Garzik; Patrick McHardy; David Kimdon; netdev@vger.kernel.org Subject: Re: [patch] d80211: use pfifo_qdisc_ops rather thand80211-specificqdisc On Thu, 2006-11-02 at 14:34 -0800, Stephen Hemminger wrote: > It makes 802.11 packet capture easier as well. Please don't invent > yet another network access object for the master device. Oh, but the master device doesn't get any packets you could capture. For that, you need to add a monitor interface. johannes - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
RE: [patch] d80211: use pfifo_qdisc_ops rather thand80211-specificqdisc
I'm not sure why we don't use the master device for packet capture - I can't think of any good reason for requiring a separate device. I would think the master device is the perfect place to do packet capture, and raw packet transmission. Simon -Original Message- From: Johannes Berg [mailto:[EMAIL PROTECTED] Sent: Thursday, November 02, 2006 2:57 PM To: Stephen Hemminger Cc: Simon Barber; Christoph Hellwig; James Ketrenos; John W. Linville; Jeff Garzik; Patrick McHardy; David Kimdon; netdev@vger.kernel.org Subject: Re: [patch] d80211: use pfifo_qdisc_ops rather thand80211-specificqdisc On Thu, 2006-11-02 at 14:34 -0800, Stephen Hemminger wrote: > It makes 802.11 packet capture easier as well. Please don't invent > yet another network access object for the master device. Oh, but the master device doesn't get any packets you could capture. For that, you need to add a monitor interface. johannes - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
