From: Ivo van Doorn <ivdoorn@gmail.com>
To: Andy Green <andy@warmcat.com>
Cc: linux-wireless@vger.kernel.org
Subject: Re: Question about packet injection
Date: Thu, 1 Mar 2007 16:22:17 +0100 [thread overview]
Message-ID: <200703011622.17602.IvDoorn@gmail.com> (raw)
In-Reply-To: <45E6ED0B.20100@warmcat.com>
On Thursday 01 March 2007 16:11, Andy Green wrote:
> Hi folks -
>
> As suggested here I migrated my daemon to using a per-physical device
> monitor mode interface it creates and destroys from usermode, together
> with libpcap for filtering and receiving broadcasts and that seems to be
> working okay. So that is half the battle to get the broadcast system
> working with mac80211 out of the box without patches.
>
> However, if I inject a captured packet - with a PRISM header prepended -
> down the Monitor mode interface using pcap_inject(), I see it appear on
> the libpcap captured output okay, but it does not go out on the air AFAICT.
>
> Is this in fact the correct way to try to inject a packet with fine
> control over its encryption and rate? If so is it expected to currently
> work on iwlwifi 0.0.8 or rt2x00 (rt73usb) from CVS 2008-02-14?
Note that rt73usb is currently broken, I know that RX isn't working
because scanning fails. Chances are quite high that TX is failing too.
I am still looking into that issue, but it might be the reason why
packet injection is failing for you.
Ivo
next prev parent reply other threads:[~2007-03-01 15:22 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-27 11:48 [RFC] Penumbra - Enabling unencrypted broadcasts alongside normal traffic Andy Green
2007-02-27 12:59 ` Johannes Berg
2007-02-27 13:30 ` Andy Green
2007-02-27 16:47 ` Jouni Malinen
2007-02-27 20:42 ` Andy Green
2007-03-01 15:11 ` Question about packet injection Andy Green
2007-03-01 15:21 ` Johannes Berg
2007-03-01 15:22 ` Ivo van Doorn [this message]
2007-03-01 17:14 ` Andy Green
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