diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-core.c | 105 | ||||
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-dev.h | 3 |
2 files changed, 51 insertions, 57 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.c b/drivers/net/wireless/iwlwifi/iwl-core.c index 9d01fde92cc..2908bff49a3 100644 --- a/drivers/net/wireless/iwlwifi/iwl-core.c +++ b/drivers/net/wireless/iwlwifi/iwl-core.c @@ -607,8 +607,7 @@ EXPORT_SYMBOL(iwlcore_free_geos); static bool is_single_rx_stream(struct iwl_priv *priv) { return !priv->current_ht_config.is_ht || - ((priv->current_ht_config.mcs.rx_mask[1] == 0) && - (priv->current_ht_config.mcs.rx_mask[2] == 0)); + priv->current_ht_config.single_chain_sufficient; } static u8 iwl_is_channel_extension(struct iwl_priv *priv, @@ -936,12 +935,8 @@ void iwl_set_rxon_ht(struct iwl_priv *priv, struct iwl_ht_config *ht_conf) if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); - IWL_DEBUG_ASSOC(priv, "supported HT rate 0x%X 0x%X 0x%X " - "rxon flags 0x%X operation mode :0x%X " + IWL_DEBUG_ASSOC(priv, "rxon flags 0x%X operation mode :0x%X " "extension channel offset 0x%x\n", - ht_conf->mcs.rx_mask[0], - ht_conf->mcs.rx_mask[1], - ht_conf->mcs.rx_mask[2], le32_to_cpu(rxon->flags), ht_conf->ht_protection, ht_conf->extension_chan_offset); return; @@ -960,12 +955,8 @@ EXPORT_SYMBOL(iwl_set_rxon_ht); */ static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) { - bool is_single = is_single_rx_stream(priv); - bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status); - /* # of Rx chains to use when expecting MIMO. */ - if (is_single || (!is_cam && (priv->current_ht_config.sm_ps == - WLAN_HT_CAP_SM_PS_STATIC))) + if (is_single_rx_stream(priv)) return IWL_NUM_RX_CHAINS_SINGLE; else return IWL_NUM_RX_CHAINS_MULTIPLE; @@ -973,27 +964,17 @@ static int iwl_get_active_rx_chain_count(struct iwl_priv *priv) static int iwl_get_idle_rx_chain_count(struct iwl_priv *priv, int active_cnt) { - int idle_cnt; bool is_cam = !test_bit(STATUS_POWER_PMI, &priv->status); + /* # Rx chains when idling and maybe trying to save power */ - switch (priv->current_ht_config.sm_ps) { - case WLAN_HT_CAP_SM_PS_STATIC: - case WLAN_HT_CAP_SM_PS_DYNAMIC: - idle_cnt = (is_cam) ? IWL_NUM_IDLE_CHAINS_DUAL : - IWL_NUM_IDLE_CHAINS_SINGLE; - break; - case WLAN_HT_CAP_SM_PS_DISABLED: - idle_cnt = (is_cam) ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE; - break; - case WLAN_HT_CAP_SM_PS_INVALID: - default: - IWL_ERR(priv, "invalid mimo ps mode %d\n", - priv->current_ht_config.sm_ps); - WARN_ON(1); - idle_cnt = -1; - break; - } - return idle_cnt; + + /* + * XXX: this is incorrect!! + * we always indicate to the AP that + * our SM PS mode is "disabled" + */ + + return is_cam ? active_cnt : IWL_NUM_IDLE_CHAINS_SINGLE; } /* up to 4 chains */ @@ -1493,8 +1474,6 @@ int iwl_init_drv(struct iwl_priv *priv) priv->iw_mode = NL80211_IFTYPE_STATION; - priv->current_ht_config.sm_ps = WLAN_HT_CAP_SM_PS_DISABLED; - /* Choose which receivers/antennas to use */ if (priv->cfg->ops->hcmd->set_rxon_chain) priv->cfg->ops->hcmd->set_rxon_chain(priv); @@ -2226,10 +2205,9 @@ int iwl_mac_conf_tx(struct ieee80211_hw *hw, u16 queue, EXPORT_SYMBOL(iwl_mac_conf_tx); static void iwl_ht_conf(struct iwl_priv *priv, - struct ieee80211_bss_conf *bss_conf) + struct ieee80211_bss_conf *bss_conf) { struct iwl_ht_config *ht_conf = &priv->current_ht_config; - struct ieee80211_sta_ht_cap *ht_cap; struct ieee80211_sta *sta; IWL_DEBUG_MAC80211(priv, "enter: \n"); @@ -2237,31 +2215,48 @@ static void iwl_ht_conf(struct iwl_priv *priv, if (!ht_conf->is_ht) return; - - /* - * It is totally wrong to base global information on something - * that is valid only when associated, alas, this driver works - * that way and I don't know how to fix it. - */ - - rcu_read_lock(); - sta = ieee80211_find_sta(priv->hw, priv->bssid); - if (!sta) { - rcu_read_unlock(); - return; - } - ht_cap = &sta->ht_cap; - - ht_conf->sm_ps = (u8)((ht_cap->cap & IEEE80211_HT_CAP_SM_PS) >> 2); - - memcpy(&ht_conf->mcs, &ht_cap->mcs, 16); - ht_conf->ht_protection = bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_PROTECTION; ht_conf->non_GF_STA_present = !!(bss_conf->ht_operation_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT); - rcu_read_unlock(); + ht_conf->single_chain_sufficient = false; + + switch (priv->iw_mode) { + case NL80211_IFTYPE_STATION: + rcu_read_lock(); + sta = ieee80211_find_sta(priv->hw, priv->bssid); + if (sta) { + struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap; + int maxstreams; + + maxstreams = (ht_cap->mcs.tx_params & + IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK) + >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT; + maxstreams += 1; + + if ((ht_cap->mcs.rx_mask[1] == 0) && + (ht_cap->mcs.rx_mask[2] == 0)) + ht_conf->single_chain_sufficient = true; + if (maxstreams <= 1) + ht_conf->single_chain_sufficient = true; + } else { + /* + * If at all, this can only happen through a race + * when the AP disconnects us while we're still + * setting up the connection, in that case mac80211 + * will soon tell us about that. + */ + ht_conf->single_chain_sufficient = true; + } + rcu_read_unlock(); + break; + case NL80211_IFTYPE_ADHOC: + ht_conf->single_chain_sufficient = true; + break; + default: + break; + } IWL_DEBUG_MAC80211(priv, "leave\n"); } diff --git a/drivers/net/wireless/iwlwifi/iwl-dev.h b/drivers/net/wireless/iwlwifi/iwl-dev.h index e161f8d1766..0c80692f934 100644 --- a/drivers/net/wireless/iwlwifi/iwl-dev.h +++ b/drivers/net/wireless/iwlwifi/iwl-dev.h @@ -506,8 +506,7 @@ struct iwl_ht_config { /* self configuration data */ bool is_ht; bool is_40mhz; - u8 sm_ps; - struct ieee80211_mcs_info mcs; + bool single_chain_sufficient; /* BSS related data */ u8 extension_chan_offset; u8 ht_protection; |