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Re: [PATCH 5/6] rt2x00: Properly request tx headroom for alignment operations.

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On Mon, Nov 23, 2009 at 18:16, Gertjan van Wingerde <gwingerde@xxxxxxxxx> wrote:
> Current rt2x00 drivers may result in a "ieee80211_tx_status: headroom too
> small" error message when a frame needs to be properly aligned before
> transmitting it.
> This is because the space needed to ensure proper alignment isn't
> requested from mac80211.
> Fix this by adding sufficient amount of alignment space to the amount
> of headroom requested for TX frames.
>
> Reported-by: David Ellingsworth <david@xxxxxxxxxxxxxxxxx>
> Signed-off-by: Gertjan van Wingerde <gwingerde@xxxxxxxxx>
> Tested-by: David Ellingsworth <david@xxxxxxxxxxxxxxxxx>
> ---
>  drivers/net/wireless/rt2x00/rt2400pci.c   |   30 +++++++++++++++-------------
>  drivers/net/wireless/rt2x00/rt2500pci.c   |   30 +++++++++++++++-------------
>  drivers/net/wireless/rt2x00/rt2500usb.c   |   29 ++++++++++++++-------------
>  drivers/net/wireless/rt2x00/rt2800lib.c   |    7 +----
>  drivers/net/wireless/rt2x00/rt2800pci.c   |   31 +++++++++++++++--------------
>  drivers/net/wireless/rt2x00/rt2800usb.c   |   25 ++++++++++++-----------
>  drivers/net/wireless/rt2x00/rt2x00.h      |    7 ++++++
>  drivers/net/wireless/rt2x00/rt2x00queue.c |    6 ++--
>  drivers/net/wireless/rt2x00/rt61pci.c     |   28 ++++++++++++++------------
>  drivers/net/wireless/rt2x00/rt73usb.c     |   27 +++++++++++++------------
>  10 files changed, 117 insertions(+), 103 deletions(-)
>
> diff --git a/drivers/net/wireless/rt2x00/rt2400pci.c b/drivers/net/wireless/rt2x00/rt2400pci.c
> index 6e68bc7..f534d70 100644
> --- a/drivers/net/wireless/rt2x00/rt2400pci.c
> +++ b/drivers/net/wireless/rt2x00/rt2400pci.c
> @@ -1623,20 +1624,21 @@ static const struct data_queue_desc rt2400pci_queue_atim = {
>  };
>
>  static const struct rt2x00_ops rt2400pci_ops = {
> -       .name           = KBUILD_MODNAME,
> -       .max_sta_intf   = 1,
> -       .max_ap_intf    = 1,
> -       .eeprom_size    = EEPROM_SIZE,
> -       .rf_size        = RF_SIZE,
> -       .tx_queues      = NUM_TX_QUEUES,
> -       .rx             = &rt2400pci_queue_rx,
> -       .tx             = &rt2400pci_queue_tx,
> -       .bcn            = &rt2400pci_queue_bcn,
> -       .atim           = &rt2400pci_queue_atim,
> -       .lib            = &rt2400pci_rt2x00_ops,
> -       .hw             = &rt2400pci_mac80211_ops,
> +       .name                   = KBUILD_MODNAME,
> +       .max_sta_intf           = 1,
> +       .max_ap_intf            = 1,
> +       .eeprom_size            = EEPROM_SIZE,
> +       .rf_size                = RF_SIZE,
> +       .tx_queues              = NUM_TX_QUEUES,
> +       .extra_tx_headroom      = 0,
> +       .rx                     = &rt2400pci_queue_rx,
> +       .tx                     = &rt2400pci_queue_tx,
> +       .bcn                    = &rt2400pci_queue_bcn,
> +       .atim                   = &rt2400pci_queue_atim,
> +       .lib                    = &rt2400pci_rt2x00_ops,
> +       .hw                     = &rt2400pci_mac80211_ops,
>  #ifdef CONFIG_RT2X00_LIB_DEBUGFS
> -       .debugfs        = &rt2400pci_rt2x00debug,
> +       .debugfs                = &rt2400pci_rt2x00debug,
>  #endif /* CONFIG_RT2X00_LIB_DEBUGFS */
>  };

Shouldn't the re-formatting of the ops structures (and addition of the
.debugfs member) go in a separate patch?

Thanks,

-- 

Julian Calaby

Email: julian.calaby@xxxxxxxxx
.Plan: http://sites.google.com/site/juliancalaby/
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