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iwlwifi: mvm: fix quota allocation

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Divide the maximal quota between all the data interfaces even in the
case of a single low latency binding without any other non low latency
interfaces, so that afterwards the quota allocation (which considers
the number of data interfaces) will be correct.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Ilan Peer 2014-01-19 11:38:39 +02:00 committed by Emmanuel Grumbach
parent 2d675e5237
commit 7b4fe06c25
1 changed files with 28 additions and 8 deletions
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36
drivers/net/wireless/iwlwifi/mvm/quota.c
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@ -234,15 +234,24 @@ int iwl_mvm_update_quotas(struct iwl_mvm *mvm, struct ieee80211_vif *newvif)
break;
}
}
if (n_non_lowlat) {
quota = (QUOTA_100 - QUOTA_LOWLAT_MIN) / n_non_lowlat;
quota_rem = QUOTA_100 - n_non_lowlat * quota -
QUOTA_LOWLAT_MIN;
} else {
quota = QUOTA_100;
quota_rem = 0;
}
}
if (data.n_low_latency_bindings == 1 && n_non_lowlat) {
/*
* Reserve quota for the low latency binding in case that
* there are several data bindings but only a single
* low latency one. Split the rest of the quota equally
* between the other data interfaces.
*/
quota = (QUOTA_100 - QUOTA_LOWLAT_MIN) / n_non_lowlat;
quota_rem = QUOTA_100 - n_non_lowlat * quota -
QUOTA_LOWLAT_MIN;
} else if (num_active_macs) {
/*
* There are 0 or more than 1 low latency bindings, or all the
* data interfaces belong to the single low latency binding.
* Split the quota equally between the data interfaces.
*/
quota = QUOTA_100 / num_active_macs;
quota_rem = QUOTA_100 % num_active_macs;
} else {
@ -262,11 +271,22 @@ int iwl_mvm_update_quotas(struct iwl_mvm *mvm, struct ieee80211_vif *newvif)
cmd.quotas[idx].quota = cpu_to_le32(0);
else if (data.n_low_latency_bindings == 1 && n_non_lowlat &&
data.low_latency[i])
/*
* There is more than one binding, but only one of the
* bindings is in low latency. For this case, allocate
* the minimal required quota for the low latency
* binding.
*/
cmd.quotas[idx].quota = cpu_to_le32(QUOTA_LOWLAT_MIN);
else
cmd.quotas[idx].quota =
cpu_to_le32(quota * data.n_interfaces[i]);
WARN_ONCE(le32_to_cpu(cmd.quotas[idx].quota) > QUOTA_100,
"Binding=%d, quota=%u > max=%u\n",
idx, le32_to_cpu(cmd.quotas[idx].quota), QUOTA_100);
if (data.n_interfaces[i] && !data.low_latency[i])
cmd.quotas[idx].max_duration =
cpu_to_le32(ll_max_duration);