From: Helmut Schaa <helmut.schaa@googlemail.com>
To: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Cc: Christian Lamparter <chunkeey@googlemail.com>,
linux-wireless@vger.kernel.org, Daniel Drake <dsd@gentoo.org>,
Ulrich Kunitz <kune@deine-taler.de>,
kvalo@adurom.com
Subject: Re: [RFC PATCH 10/17] zd1211rw: implement beacon fetching and handling ieee80211_get_buffered_bc()
Date: Thu, 20 Jan 2011 10:13:08 +0100 [thread overview]
Message-ID: <201101201013.09222.helmut.schaa@googlemail.com> (raw)
In-Reply-To: <20110120101606.53052h18mlpyp8w0@hayate.sektori.org>
Am Donnerstag, 20. Januar 2011 schrieb Jussi Kivilinna:
> Quoting Christian Lamparter <chunkeey@googlemail.com>:
> > True, but a recent discussion into this matter have made parts of the
> > API you are planning to use sort-of "deprecated"? [I think?]
> >
> > http://marc.info/?l=linux-wireless&m=129463297300480
> >
> > I don't know the exact details, but I'm sure Kvalo does have his reasons.
> > [afaik it has to do with wl12xx, he even explained it once, but I can't
> > find that mail anymore].
> >
>
> What I understood from that thread is that rt2x00/usb doesn't have HW
> buffering and doesn't enable IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING
> (rt2x00/pci does), and yet enables AP-mode. Driver has this comment:
> /*
> * Initialize all hw fields.
> *
> * Don't set IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING unless we are
> * capable of sending the buffered frames out after the DTIM
> * transmission using rt2x00lib_beacondone. This will send out
> * multicast and broadcast traffic immediately instead of buffering it
> * infinitly and thus dropping it after some time.
> */
Yep, your interpretation is correct. Multi- and broadcast buffering in mac80211
will stay, but only if your device is able to send them out in a timely manner,
which rt2x00 usb devices are not.
Helmut
next prev parent reply other threads:[~2011-01-20 9:14 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-04 23:47 [RFC PATCH 0/17] zd1211rw: add support for AP mode Jussi Kivilinna
2011-01-04 23:47 ` [RFC PATCH 01/17] zd1211rw: fix tx-queue disabling Jussi Kivilinna
2011-01-04 23:48 ` [RFC PATCH 02/17] zd1211rw: cancel process_intr work on zd_chip_disable_int() Jussi Kivilinna
2011-01-04 23:48 ` [RFC PATCH 03/17] zd1211rw: fix beacon interval setup Jussi Kivilinna
2011-01-04 23:48 ` [RFC PATCH 04/17] zd1211rw: move set_multicast_hash and set_rx_filter from workers to configure_filter Jussi Kivilinna
2011-01-04 23:48 ` [RFC PATCH 05/17] zd1211rw: move set_rts_cts_work to bss_info_changed Jussi Kivilinna
2011-01-04 23:48 ` [RFC PATCH 06/17] zd1211rw: support setting BSSID for AP mode Jussi Kivilinna
2011-01-04 23:48 ` [RFC PATCH 07/17] zd1211rw: fix ack_pending in filter_ack causing tx-packet ordering problem on monitor Jussi Kivilinna
2011-01-04 23:48 ` [RFC PATCH 08/17] zd1211rw: let zd_set_beacon_interval() set dtim_period and add AP-beacon flag Jussi Kivilinna
2011-01-04 23:49 ` [RFC PATCH 09/17] zd1211rw: implement seq_num for IEEE80211_TX_CTL_ASSIGN_SEQ Jussi Kivilinna
2011-01-04 23:49 ` [RFC PATCH 10/17] zd1211rw: implement beacon fetching and handling ieee80211_get_buffered_bc() Jussi Kivilinna
2011-01-06 21:46 ` Christian Lamparter
2011-01-06 21:55 ` Johannes Berg
2011-01-09 15:46 ` Jussi Kivilinna
2011-01-09 20:33 ` Christian Lamparter
2011-01-19 18:49 ` Jussi Kivilinna
2011-01-19 20:22 ` Christian Lamparter
2011-01-20 8:16 ` Jussi Kivilinna
2011-01-20 9:13 ` Helmut Schaa [this message]
2011-01-20 17:43 ` Christian Lamparter
2011-01-04 23:49 ` [RFC PATCH 11/17] zd1211rw: add beacon watchdog and setting HW beacon more failsafe Jussi Kivilinna
2011-01-04 23:49 ` [RFC PATCH 12/17] zd1211rw: batch beacon config commands together Jussi Kivilinna
2011-01-04 23:49 ` [RFC PATCH 13/17] zd1211rw: use stack for small cmd-buffers Jussi Kivilinna
2011-01-05 9:27 ` Johannes Berg
2011-01-06 18:55 ` Dan Williams
2011-01-06 21:53 ` Jussi Kivilinna
2011-01-04 23:49 ` [RFC PATCH 14/17] zd1211rw: lower hw command timeouts Jussi Kivilinna
2011-01-04 23:49 ` [RFC PATCH 15/17] zd1211rw: collect driver settings and add function to restore theim Jussi Kivilinna
2011-01-04 23:50 ` [RFC PATCH 16/17] zd1211rw: add tx watchdog Jussi Kivilinna
2011-01-04 23:50 ` [RFC PATCH 17/17] zd1211rw: enable NL80211_IFTYPE_AP Jussi Kivilinna
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