diff options
| -rw-r--r-- | include/net/mac80211.h | 15 | ||||
| -rw-r--r-- | net/mac80211/cfg.c | 15 | ||||
| -rw-r--r-- | net/mac80211/chan.c | 90 | ||||
| -rw-r--r-- | net/mac80211/debugfs_netdev.c | 2 | ||||
| -rw-r--r-- | net/mac80211/ibss.c | 3 | ||||
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 20 | ||||
| -rw-r--r-- | net/mac80211/iface.c | 10 | ||||
| -rw-r--r-- | net/mac80211/main.c | 18 | ||||
| -rw-r--r-- | net/mac80211/mlme.c | 28 | ||||
| -rw-r--r-- | net/mac80211/status.c | 15 | ||||
| -rw-r--r-- | net/mac80211/trace.h | 13 | ||||
| -rw-r--r-- | net/mac80211/util.c | 82 |
12 files changed, 219 insertions, 92 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index d9d2119f0828..3560881d17ee 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -146,9 +146,11 @@ struct ieee80211_low_level_stats { /** * enum ieee80211_chanctx_change - change flag for channel context * @IEEE80211_CHANCTX_CHANGE_CHANNEL_TYPE: The channel type was changed + * @IEEE80211_CHANCTX_CHANGE_RX_CHAINS: The number of RX chains changed */ enum ieee80211_chanctx_change { IEEE80211_CHANCTX_CHANGE_CHANNEL_TYPE = BIT(0), + IEEE80211_CHANCTX_CHANGE_RX_CHAINS = BIT(1), }; /** @@ -159,6 +161,11 @@ enum ieee80211_chanctx_change { * * @channel: the channel to tune to * @channel_type: the channel (HT) type + * @rx_chains_static: The number of RX chains that must always be + * active on the channel to receive MIMO transmissions + * @rx_chains_dynamic: The number of RX chains that must be enabled + * after RTS/CTS handshake to receive SMPS MIMO transmissions; + * this will always be >= @rx_chains_always. * @drv_priv: data area for driver use, will always be aligned to * sizeof(void *), size is determined in hw information. */ @@ -166,6 +173,8 @@ struct ieee80211_chanctx_conf { struct ieee80211_channel *channel; enum nl80211_channel_type channel_type; + u8 rx_chains_static, rx_chains_dynamic; + u8 drv_priv[0] __attribute__((__aligned__(sizeof(void *)))); }; @@ -820,6 +829,8 @@ enum ieee80211_conf_flags { * @IEEE80211_CONF_CHANGE_RETRY_LIMITS: retry limits changed * @IEEE80211_CONF_CHANGE_IDLE: Idle flag changed * @IEEE80211_CONF_CHANGE_SMPS: Spatial multiplexing powersave mode changed + * Note that this is only valid if channel contexts are not used, + * otherwise each channel context has the number of chains listed. */ enum ieee80211_conf_changed { IEEE80211_CONF_CHANGE_SMPS = BIT(1), @@ -885,7 +896,9 @@ enum ieee80211_smps_mode { * * @smps_mode: spatial multiplexing powersave mode; note that * %IEEE80211_SMPS_STATIC is used when the device is not - * configured for an HT channel + * configured for an HT channel. + * Note that this is only valid if channel contexts are not used, + * otherwise each channel context has the number of chains listed. */ struct ieee80211_conf { u32 flags; diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 09c90627fd19..03216b0408c7 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -884,6 +884,10 @@ static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev, if (old) return -EALREADY; + /* TODO: make hostapd tell us what it wants */ + sdata->smps_mode = IEEE80211_SMPS_OFF; + sdata->needed_rx_chains = sdata->local->rx_chains; + err = ieee80211_vif_use_channel(sdata, params->channel, params->channel_type, IEEE80211_CHANCTX_SHARED); @@ -1673,6 +1677,10 @@ static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev, if (err) return err; + /* can mesh use other SMPS modes? */ + sdata->smps_mode = IEEE80211_SMPS_OFF; + sdata->needed_rx_chains = sdata->local->rx_chains; + err = ieee80211_vif_use_channel(sdata, setup->channel, setup->channel_type, IEEE80211_CHANCTX_SHARED); @@ -2052,13 +2060,12 @@ int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, /* * If not associated, or current association is not an HT - * association, there's no need to send an action frame. + * association, there's no need to do anything, just store + * the new value until we associate. */ if (!sdata->u.mgd.associated || - sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) { - ieee80211_recalc_smps(sdata->local); + sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) return 0; - } ap = sdata->u.mgd.associated->bssid; diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index 41e1aa69f7aa..bfaa486d928c 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -118,6 +118,8 @@ ieee80211_new_chanctx(struct ieee80211_local *local, ctx->conf.channel = channel; ctx->conf.channel_type = channel_type; + ctx->conf.rx_chains_static = 1; + ctx->conf.rx_chains_dynamic = 1; ctx->mode = mode; if (!local->use_chanctx) { @@ -222,8 +224,10 @@ static void ieee80211_unassign_vif_chanctx(struct ieee80211_sub_if_data *sdata, drv_unassign_vif_chanctx(local, sdata, ctx); - if (ctx->refcount > 0) + if (ctx->refcount > 0) { ieee80211_recalc_chanctx_chantype(sdata->local, ctx); + ieee80211_recalc_smps_chanctx(local, ctx); + } } static void __ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata) @@ -246,6 +250,89 @@ static void __ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata) ieee80211_free_chanctx(local, ctx); } +void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, + struct ieee80211_chanctx *chanctx) +{ + struct ieee80211_sub_if_data *sdata; + u8 rx_chains_static, rx_chains_dynamic; + + lockdep_assert_held(&local->chanctx_mtx); + + rx_chains_static = 1; + rx_chains_dynamic = 1; + + rcu_read_lock(); + list_for_each_entry_rcu(sdata, &local->interfaces, list) { + u8 needed_static, needed_dynamic; + + if (!ieee80211_sdata_running(sdata)) + continue; + + if (rcu_access_pointer(sdata->vif.chanctx_conf) != + &chanctx->conf) + continue; + + switch (sdata->vif.type) { + case NL80211_IFTYPE_P2P_DEVICE: + continue; + case NL80211_IFTYPE_STATION: + if (!sdata->u.mgd.associated) + continue; + break; + case NL80211_IFTYPE_AP_VLAN: + continue; + case NL80211_IFTYPE_AP: + case NL80211_IFTYPE_ADHOC: + case NL80211_IFTYPE_WDS: + case NL80211_IFTYPE_MESH_POINT: + break; + default: + WARN_ON_ONCE(1); + } + + switch (sdata->smps_mode) { + default: + WARN_ONCE(1, "Invalid SMPS mode %d\n", + sdata->smps_mode); + /* fall through */ + case IEEE80211_SMPS_OFF: + needed_static = sdata->needed_rx_chains; + needed_dynamic = sdata->needed_rx_chains; + break; + case IEEE80211_SMPS_DYNAMIC: + needed_static = 1; + needed_dynamic = sdata->needed_rx_chains; + break; + case IEEE80211_SMPS_STATIC: + needed_static = 1; + needed_dynamic = 1; + break; + } + + rx_chains_static = max(rx_chains_static, needed_static); + rx_chains_dynamic = max(rx_chains_dynamic, needed_dynamic); + } + rcu_read_unlock(); + + if (!local->use_chanctx) { + if (rx_chains_static > 1) + local->smps_mode = IEEE80211_SMPS_OFF; + else if (rx_chains_dynamic > 1) + local->smps_mode = IEEE80211_SMPS_DYNAMIC; + else + local->smps_mode = IEEE80211_SMPS_STATIC; + ieee80211_hw_config(local, 0); + } + + if (rx_chains_static == chanctx->conf.rx_chains_static && + rx_chains_dynamic == chanctx->conf.rx_chains_dynamic) + return; + + chanctx->conf.rx_chains_static = rx_chains_static; + chanctx->conf.rx_chains_dynamic = rx_chains_dynamic; + drv_change_chanctx(local, chanctx, IEEE80211_CHANCTX_CHANGE_RX_CHAINS); +} + int ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, struct ieee80211_channel *channel, enum nl80211_channel_type channel_type, @@ -278,6 +365,7 @@ int ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, goto out; } + ieee80211_recalc_smps_chanctx(local, ctx); out: mutex_unlock(&local->chanctx_mtx); return ret; diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index 6d5aec9418ee..34e173976573 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -217,7 +217,7 @@ static ssize_t ieee80211_if_fmt_smps(const struct ieee80211_sub_if_data *sdata, return snprintf(buf, buflen, "request: %s\nused: %s\n", smps_modes[sdata->u.mgd.req_smps], - smps_modes[sdata->u.mgd.ap_smps]); + smps_modes[sdata->smps_mode]); } static ssize_t ieee80211_if_parse_smps(struct ieee80211_sub_if_data *sdata, diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c index 34d9235117d9..291c9e07f1bd 100644 --- a/net/mac80211/ibss.c +++ b/net/mac80211/ibss.c @@ -1132,6 +1132,9 @@ int ieee80211_ibss_join(struct ieee80211_sub_if_data *sdata, changed |= BSS_CHANGED_HT; ieee80211_bss_info_change_notify(sdata, changed); + sdata->smps_mode = IEEE80211_SMPS_OFF; + sdata->needed_rx_chains = sdata->local->rx_chains; + ieee80211_queue_work(&sdata->local->hw, &sdata->work); return 0; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 6660118b46b3..132577d22928 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -433,7 +433,6 @@ struct ieee80211_if_managed { bool powersave; /* powersave requested for this iface */ bool broken_ap; /* AP is broken -- turn off powersave */ enum ieee80211_smps_mode req_smps, /* requested smps mode */ - ap_smps, /* smps mode AP thinks we're in */ driver_smps_mode; /* smps mode request */ struct work_struct request_smps_work; @@ -728,11 +727,17 @@ struct ieee80211_sub_if_data { struct ieee80211_tx_queue_params tx_conf[IEEE80211_NUM_ACS]; + /* used to reconfigure hardware SM PS */ + struct work_struct recalc_smps; + struct work_struct work; struct sk_buff_head skb_queue; bool arp_filter_state; + u8 needed_rx_chains; + enum ieee80211_smps_mode smps_mode; + /* * AP this belongs to: self in AP mode and * corresponding AP in VLAN mode, NULL for @@ -905,9 +910,6 @@ struct ieee80211_local { /* used for uploading changed mc list */ struct work_struct reconfig_filter; - /* used to reconfigure hardware SM PS */ - struct work_struct recalc_smps; - /* aggregated multicast list */ struct netdev_hw_addr_list mc_list; @@ -944,6 +946,9 @@ struct ieee80211_local { /* wowlan is enabled -- don't reconfig on resume */ bool wowlan; + /* number of RX chains the hardware has */ + u8 rx_chains; + int tx_headroom; /* required headroom for hardware/radiotap */ /* Tasklet and skb queue to process calls from IRQ mode. All frames @@ -1408,6 +1413,8 @@ void ieee80211_ba_session_work(struct work_struct *work); void ieee80211_tx_ba_session_handle_start(struct sta_info *sta, int tid); void ieee80211_release_reorder_timeout(struct sta_info *sta, int tid); +u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs); + /* Spectrum management */ void ieee80211_process_measurement_req(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, @@ -1554,7 +1561,7 @@ u32 ieee80211_sta_get_rates(struct ieee80211_local *local, enum ieee80211_band band, u32 *basic_rates); int __ieee80211_request_smps(struct ieee80211_sub_if_data *sdata, enum ieee80211_smps_mode smps_mode); -void ieee80211_recalc_smps(struct ieee80211_local *local); +void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata); size_t ieee80211_ie_split(const u8 *ies, size_t ielen, const u8 *ids, int n_ids, size_t offset); @@ -1585,6 +1592,9 @@ ieee80211_vif_use_channel(struct ieee80211_sub_if_data *sdata, enum ieee80211_chanctx_mode mode); void ieee80211_vif_release_channel(struct ieee80211_sub_if_data *sdata); +void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, + struct ieee80211_chanctx *chanctx); + #ifdef CONFIG_MAC80211_NOINLINE #define debug_noinline noinline #else diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 7cb8382b19e5..99f2b19c8f0d 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -739,6 +739,8 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, del_timer_sync(&local->dynamic_ps_timer); cancel_work_sync(&local->dynamic_ps_enable_work); + cancel_work_sync(&sdata->recalc_smps); + /* APs need special treatment */ if (sdata->vif.type == NL80211_IFTYPE_AP) { struct ieee80211_sub_if_data *vlan, *tmpsdata; @@ -1125,6 +1127,13 @@ static void ieee80211_iface_work(struct work_struct *work) } } +static void ieee80211_recalc_smps_work(struct work_struct *work) +{ + struct ieee80211_sub_if_data *sdata = + container_of(work, struct ieee80211_sub_if_data, recalc_smps); + + ieee80211_recalc_smps(sdata); +} /* * Helper function to initialise an interface to a specific type. @@ -1153,6 +1162,7 @@ static void ieee80211_setup_sdata(struct ieee80211_sub_if_data *sdata, skb_queue_head_init(&sdata->skb_queue); INIT_WORK(&sdata->work, ieee80211_iface_work); + INIT_WORK(&sdata->recalc_smps, ieee80211_recalc_smps_work); switch (type) { case NL80211_IFTYPE_P2P_GO: diff --git a/net/mac80211/main.c b/net/mac80211/main.c index 9cb6280aa2f2..2c8969b67851 100644 --- a/net/mac80211/main.c +++ b/net/mac80211/main.c @@ -372,14 +372,6 @@ void ieee80211_restart_hw(struct ieee80211_hw *hw) } EXPORT_SYMBOL(ieee80211_restart_hw); -static void ieee80211_recalc_smps_work(struct work_struct *work) -{ - struct ieee80211_local *local = - container_of(work, struct ieee80211_local, recalc_smps); - - ieee80211_recalc_smps(local); -} - #ifdef CONFIG_INET static int ieee80211_ifa_changed(struct notifier_block *nb, unsigned long data, void *arg) @@ -667,7 +659,6 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len, INIT_WORK(&local->restart_work, ieee80211_restart_work); INIT_WORK(&local->reconfig_filter, ieee80211_reconfig_filter); - INIT_WORK(&local->recalc_smps, ieee80211_recalc_smps_work); local->smps_mode = IEEE80211_SMPS_OFF; INIT_WORK(&local->dynamic_ps_enable_work, @@ -773,6 +764,8 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) if (hw->max_report_rates == 0) hw->max_report_rates = hw->max_rates; + local->rx_chains = 1; + /* * generic code guarantees at least one band, * set this very early because much code assumes @@ -804,6 +797,13 @@ int ieee80211_register_hw(struct ieee80211_hw *hw) max_bitrates = sband->n_bitrates; supp_ht = supp_ht || sband->ht_cap.ht_supported; supp_vht = supp_vht || sband->vht_cap.vht_supported; + + if (sband->ht_cap.ht_supported) + local->rx_chains = + max(ieee80211_mcs_to_chains(&sband->ht_cap.mcs), + local->rx_chains); + + /* TODO: consider VHT for RX chains, hopefully it's the same */ } local->int_scan_req = kzalloc(sizeof(*local->int_scan_req) + diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c index 4add50063161..f3f338541b01 100644 --- a/net/mac80211/mlme.c +++ b/net/mac80211/mlme.c @@ -543,7 +543,7 @@ static void ieee80211_send_assoc(struct ieee80211_sub_if_data *sdata) if (!(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) ieee80211_add_ht_ie(sdata, skb, assoc_data->ap_ht_param, - sband, chan, ifmgd->ap_smps); + sband, chan, sdata->smps_mode); if (!(ifmgd->flags & IEEE80211_STA_DISABLE_VHT)) ieee80211_add_vht_ie(sdata, skb, sband); @@ -1392,7 +1392,7 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, ieee80211_recalc_ps(local, -1); mutex_unlock(&local->iflist_mtx); - ieee80211_recalc_smps(local); + ieee80211_recalc_smps(sdata); ieee80211_recalc_ps_vif(sdata); netif_tx_start_all_queues(sdata->dev); @@ -3157,6 +3157,10 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, } if (ht_oper) { + const u8 *ht_cap_ie; + const struct ieee80211_ht_cap *ht_cap; + u8 chains = 1; + channel_type = NL80211_CHAN_HT20; if (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) { @@ -3170,8 +3174,22 @@ static int ieee80211_prep_channel(struct ieee80211_sub_if_data *sdata, break; } } + + ht_cap_ie = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, + cbss->information_elements, + cbss->len_information_elements); + if (ht_cap_ie && ht_cap_ie[1] >= sizeof(*ht_cap)) { + ht_cap = (void *)(ht_cap_ie + 2); + chains = ieee80211_mcs_to_chains(&ht_cap->mcs); + } + sdata->needed_rx_chains = min(chains, local->rx_chains); + } else { + sdata->needed_rx_chains = 1; } + /* will change later if needed */ + sdata->smps_mode = IEEE80211_SMPS_OFF; + ieee80211_vif_release_channel(sdata); return ieee80211_vif_use_channel(sdata, cbss->channel, channel_type, IEEE80211_CHANCTX_SHARED); @@ -3485,11 +3503,11 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { if (ifmgd->powersave) - ifmgd->ap_smps = IEEE80211_SMPS_DYNAMIC; + sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; else - ifmgd->ap_smps = IEEE80211_SMPS_OFF; + sdata->smps_mode = IEEE80211_SMPS_OFF; } else - ifmgd->ap_smps = ifmgd->req_smps; + sdata->smps_mode = ifmgd->req_smps; assoc_data->capability = req->bss->capability; assoc_data->wmm = bss->wmm_used && diff --git a/net/mac80211/status.c b/net/mac80211/status.c index 3af0cc4130f1..21fa5c72ea14 100644 --- a/net/mac80211/status.c +++ b/net/mac80211/status.c @@ -189,30 +189,31 @@ static void ieee80211_frame_acked(struct sta_info *sta, struct sk_buff *skb) } if (ieee80211_is_action(mgmt->frame_control) && - sdata->vif.type == NL80211_IFTYPE_STATION && mgmt->u.action.category == WLAN_CATEGORY_HT && - mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS) { + mgmt->u.action.u.ht_smps.action == WLAN_HT_ACTION_SMPS && + sdata->vif.type == NL80211_IFTYPE_STATION && + ieee80211_sdata_running(sdata)) { /* * This update looks racy, but isn't -- if we come * here we've definitely got a station that we're * talking to, and on a managed interface that can * only be the AP. And the only other place updating - * this variable is before we're associated. + * this variable in managed mode is before association. */ switch (mgmt->u.action.u.ht_smps.smps_control) { case WLAN_HT_SMPS_CONTROL_DYNAMIC: - sta->sdata->u.mgd.ap_smps = IEEE80211_SMPS_DYNAMIC; + sdata->smps_mode = IEEE80211_SMPS_DYNAMIC; break; case WLAN_HT_SMPS_CONTROL_STATIC: - sta->sdata->u.mgd.ap_smps = IEEE80211_SMPS_STATIC; + sdata->smps_mode = IEEE80211_SMPS_STATIC; break; case WLAN_HT_SMPS_CONTROL_DISABLED: default: /* shouldn't happen since we don't send that */ - sta->sdata->u.mgd.ap_smps = IEEE80211_SMPS_OFF; + sdata->smps_mode = IEEE80211_SMPS_OFF; break; } - ieee80211_queue_work(&local->hw, &local->recalc_smps); + ieee80211_queue_work(&local->hw, &sdata->recalc_smps); } } diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h index a3f5fe2a84a8..629364705f7b 100644 --- a/net/mac80211/trace.h +++ b/net/mac80211/trace.h @@ -29,11 +29,16 @@ #define VIF_PR_ARG __get_str(vif_name), __entry->vif_type, __entry->p2p ? "/p2p" : "" #define CHANCTX_ENTRY __field(int, freq) \ - __field(int, chantype) + __field(int, chantype) \ + __field(u8, rx_chains_static) \ + __field(u8, rx_chains_dynamic) #define CHANCTX_ASSIGN __entry->freq = ctx->conf.channel->center_freq; \ - __entry->chantype = ctx->conf.channel_type -#define CHANCTX_PR_FMT " freq:%d MHz chantype:%d" -#define CHANCTX_PR_ARG __entry->freq, __entry->chantype + __entry->chantype = ctx->conf.channel_type; \ + __entry->rx_chains_static = ctx->conf.rx_chains_static; \ + __entry->rx_chains_dynamic = ctx->conf.rx_chains_dynamic +#define CHANCTX_PR_FMT " freq:%d MHz chantype:%d chains:%d/%d" +#define CHANCTX_PR_ARG __entry->freq, __entry->chantype, \ + __entry->rx_chains_static, __entry->rx_chains_dynamic diff --git a/net/mac80211/util.c b/net/mac80211/util.c index 7d737071dedb..b732e219b107 100644 --- a/net/mac80211/util.c +++ b/net/mac80211/util.c @@ -1618,68 +1618,24 @@ void ieee80211_resume_disconnect(struct ieee80211_vif *vif) } EXPORT_SYMBOL_GPL(ieee80211_resume_disconnect); -static int check_mgd_smps(struct ieee80211_if_managed *ifmgd, - enum ieee80211_smps_mode *smps_mode) +void ieee80211_recalc_smps(struct ieee80211_sub_if_data *sdata) { - if (ifmgd->associated) { - *smps_mode = ifmgd->ap_smps; - - if (*smps_mode == IEEE80211_SMPS_AUTOMATIC) { - if (ifmgd->powersave) - *smps_mode = IEEE80211_SMPS_DYNAMIC; - else - *smps_mode = IEEE80211_SMPS_OFF; - } - - return 1; - } - - return 0; -} - -void ieee80211_recalc_smps(struct ieee80211_local *local) -{ - struct ieee80211_sub_if_data *sdata; - enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_OFF; - int count = 0; - - mutex_lock(&local->iflist_mtx); - - /* - * This function could be improved to handle multiple - * interfaces better, but right now it makes any - * non-station interfaces force SM PS to be turned - * off. If there are multiple station interfaces it - * could also use the best possible mode, e.g. if - * one is in static and the other in dynamic then - * dynamic is ok. - */ - - list_for_each_entry(sdata, &local->interfaces, list) { - if (!ieee80211_sdata_running(sdata)) - continue; - if (sdata->vif.type == NL80211_IFTYPE_P2P_DEVICE) - continue; - if (sdata->vif.type != NL80211_IFTYPE_STATION) - goto set; + struct ieee80211_local *local = sdata->local; + struct ieee80211_chanctx_conf *chanctx_conf; + struct ieee80211_chanctx *chanctx; - count += check_mgd_smps(&sdata->u.mgd, &smps_mode); + mutex_lock(&local->chanctx_mtx); - if (count > 1) { - smps_mode = IEEE80211_SMPS_OFF; - break; - } - } + chanctx_conf = rcu_dereference_protected(sdata->vif.chanctx_conf, + lockdep_is_held(&local->chanctx_mtx)); - if (smps_mode == local->smps_mode) + if (WARN_ON_ONCE(!chanctx_conf)) goto unlock; - set: - local->smps_mode = smps_mode; - /* changed flag is auto-detected for this */ - ieee80211_hw_config(local, 0); + chanctx = container_of(chanctx_conf, struct ieee80211_chanctx, conf); + ieee80211_recalc_smps_chanctx(local, chanctx); unlock: - mutex_unlock(&local->iflist_mtx); + mutex_unlock(&local->chanctx_mtx); } static bool ieee80211_id_in_list(const u8 *ids, int n_ids, u8 id) @@ -1978,3 +1934,19 @@ int ieee80211_ave_rssi(struct ieee80211_vif *vif) return ifmgd->ave_beacon_signal; } EXPORT_SYMBOL_GPL(ieee80211_ave_rssi); + +u8 ieee80211_mcs_to_chains(const struct ieee80211_mcs_info *mcs) +{ + if (!mcs) + return 1; + + /* TODO: consider rx_highest */ + + if (mcs->rx_mask[3]) + return 4; + if (mcs->rx_mask[2]) + return 3; + if (mcs->rx_mask[1]) + return 2; + return 1; +} |
