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iwlwifi: mvm: refactor iwl_mvm_rs_rate_init

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Refactor setting of VHT enabled rates in preparation of adding
some more logic there.

Signed-off-by: Eyal Shapira <eyal@wizery.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Eyal Shapira 2013-11-09 22:48:56 +02:00 • committed by Emmanuel Grumbach
parent 9e680946a4
commit 750a1b456f
1 changed files with 28 additions and 21 deletions
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49
drivers/net/wireless/iwlwifi/mvm/rs.c
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@ -2242,6 +2242,33 @@ static int rs_vht_highest_rx_mcs_index(struct ieee80211_sta_vht_cap *vht_cap,
return -1;
}
static void rs_vht_set_enabled_rates(struct ieee80211_sta *sta,
struct ieee80211_sta_vht_cap *vht_cap,
struct iwl_lq_sta *lq_sta)
{
int i;
int highest_mcs = rs_vht_highest_rx_mcs_index(vht_cap, 1);
if (highest_mcs >= IWL_RATE_MCS_0_INDEX) {
for (i = IWL_RATE_MCS_0_INDEX; i <= highest_mcs; i++) {
if (i == IWL_RATE_9M_INDEX)
continue;
lq_sta->active_siso_rate |= BIT(i);
}
}
highest_mcs = rs_vht_highest_rx_mcs_index(vht_cap, 2);
if (highest_mcs >= IWL_RATE_MCS_0_INDEX) {
for (i = IWL_RATE_MCS_0_INDEX; i <= highest_mcs; i++) {
if (i == IWL_RATE_9M_INDEX)
continue;
lq_sta->active_mimo2_rate |= BIT(i);
}
}
}
/*
* Called after adding a new station to initialize rate scaling
*/
@ -2308,27 +2335,7 @@ void iwl_mvm_rs_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
lq_sta->is_vht = false;
} else {
int highest_mcs = rs_vht_highest_rx_mcs_index(vht_cap, 1);
if (highest_mcs >= IWL_RATE_MCS_0_INDEX) {
for (i = IWL_RATE_MCS_0_INDEX; i <= highest_mcs; i++) {
if (i == IWL_RATE_9M_INDEX)
continue;
lq_sta->active_siso_rate |= BIT(i);
}
}
highest_mcs = rs_vht_highest_rx_mcs_index(vht_cap, 2);
if (highest_mcs >= IWL_RATE_MCS_0_INDEX) {
for (i = IWL_RATE_MCS_0_INDEX; i <= highest_mcs; i++) {
if (i == IWL_RATE_9M_INDEX)
continue;
lq_sta->active_mimo2_rate |= BIT(i);
}
}
/* TODO: avoid MCS9 in 20Mhz which isn't valid for 11ac */
rs_vht_set_enabled_rates(sta, vht_cap, lq_sta);
lq_sta->is_vht = true;
}