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mac80211: fix and optimize MCS mask handling

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Currently the code always copies the configured MCS mask (even if it is
set to default), but only uses it if legacy rates were also masked out.
Fix this by adding a flag that tracks whether the configured MCS mask is
set to default or not.
Optimize the code further by storing a pointer to the configured rate
mask in txrc instead of using memcpy.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Felix Fietkau
2013-04-16 13:38:42 +02:00
committed by Johannes Berg
parent dad6330d03
commit 2ffbe6d333
5 changed files with 28 additions and 10 deletions
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13
net/mac80211/cfg.c
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@@ -2417,9 +2417,22 @@ static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
}
for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
struct ieee80211_supported_band *sband = wiphy->bands[i];
int j;
sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].mcs,
sizeof(mask->control[i].mcs));
sdata->rc_has_mcs_mask[i] = false;
if (!sband)
continue;
for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++)
if (~sdata->rc_rateidx_mcs_mask[i][j]) {
sdata->rc_has_mcs_mask[i] = true;
break;
}
}
return 0;