On Mon, 2013-02-11 at 15:10 +0100, Felix Fietkau wrote:
> On 2013-02-11 2:57 PM, Christian Lamparter wrote:
> > On Monday, February 11, 2013 02:36:05 PM Felix Fietkau wrote:
> >> When MCS rates start to get bad in 2.4 GHz because of long range or
> >> strong interference, CCK rates can be a lot more robust.
> >>
> >> This patch adds a pseudo MCS group containing CCK rates (long preamble
> >> in the lower 4 slots, short preamble in the upper slots).
> >>
> >> Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
> >> ---
> >> static void
> >> +minstrel_ht_update_cck(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
> >> + struct ieee80211_supported_band *sband,
> >> + struct ieee80211_sta *sta)
> >> +{
> >> + int i;
> >> +
> >> + if (sband->band != IEEE80211_BAND_2GHZ)
> >> + return;
> >> +
> >> + mi->cck_supported = 0;
> >> + mi->cck_supported_short = 0;
> >> + for (i = 0; i < 4; i++) {
> >> + if (!rate_supported(sta, sband->band, mp->cck_rates[i]))
> >> + continue;
> >
> > Don't we need to check if the receiver (and the minstrel_ht sender)
> > supports IEEE80211_HT_CAP_DSSSCCK40 when the phy is in HT40+/- mode?
> I don't think this should be handled in the rate control modules, when
> mac80211 can easily handle that through the supported rates set (which
> seems to be the intention behind this flag in the standard as well).
Patches welcome. This corner of the spec doesn't seem to be implemented
at all :)
johannes
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