diff options
Diffstat (limited to 'net/mac80211/s1g.c')
| -rw-r--r-- | net/mac80211/s1g.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/net/mac80211/s1g.c b/net/mac80211/s1g.c index c33f332b049a..7e35ab5b6166 100644 --- a/net/mac80211/s1g.c +++ b/net/mac80211/s1g.c @@ -6,6 +6,7 @@ #include <linux/ieee80211.h> #include <net/mac80211.h> #include "ieee80211_i.h" +#include "driver-ops.h" void ieee80211_s1g_sta_rate_init(struct sta_info *sta) { @@ -14,3 +15,182 @@ void ieee80211_s1g_sta_rate_init(struct sta_info *sta) sta->rx_stats.last_rate = STA_STATS_FIELD(TYPE, STA_STATS_RATE_TYPE_S1G); } + +bool ieee80211_s1g_is_twt_setup(struct sk_buff *skb) +{ + struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; + + if (likely(!ieee80211_is_action(mgmt->frame_control))) + return false; + + if (likely(mgmt->u.action.category != WLAN_CATEGORY_S1G)) + return false; + + return mgmt->u.action.u.s1g.action_code == WLAN_S1G_TWT_SETUP; +} + +static void +ieee80211_s1g_send_twt_setup(struct ieee80211_sub_if_data *sdata, const u8 *da, + const u8 *bssid, struct ieee80211_twt_setup *twt) +{ + int len = IEEE80211_MIN_ACTION_SIZE + 4 + twt->length; + struct ieee80211_local *local = sdata->local; + struct ieee80211_mgmt *mgmt; + struct sk_buff *skb; + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + len); + if (!skb) + return; + + skb_reserve(skb, local->hw.extra_tx_headroom); + mgmt = skb_put_zero(skb, len); + mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | + IEEE80211_STYPE_ACTION); + memcpy(mgmt->da, da, ETH_ALEN); + memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); + memcpy(mgmt->bssid, bssid, ETH_ALEN); + + mgmt->u.action.category = WLAN_CATEGORY_S1G; + mgmt->u.action.u.s1g.action_code = WLAN_S1G_TWT_SETUP; + memcpy(mgmt->u.action.u.s1g.variable, twt, 3 + twt->length); + + IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | + IEEE80211_TX_INTFL_MLME_CONN_TX | + IEEE80211_TX_CTL_REQ_TX_STATUS; + ieee80211_tx_skb(sdata, skb); +} + +static void +ieee80211_s1g_send_twt_teardown(struct ieee80211_sub_if_data *sdata, + const u8 *da, const u8 *bssid, u8 flowid) +{ + struct ieee80211_local *local = sdata->local; + struct ieee80211_mgmt *mgmt; + struct sk_buff *skb; + u8 *id; + + skb = dev_alloc_skb(local->hw.extra_tx_headroom + + IEEE80211_MIN_ACTION_SIZE + 2); + if (!skb) + return; + + skb_reserve(skb, local->hw.extra_tx_headroom); + mgmt = skb_put_zero(skb, IEEE80211_MIN_ACTION_SIZE + 2); + mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | + IEEE80211_STYPE_ACTION); + memcpy(mgmt->da, da, ETH_ALEN); + memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); + memcpy(mgmt->bssid, bssid, ETH_ALEN); + + mgmt->u.action.category = WLAN_CATEGORY_S1G; + mgmt->u.action.u.s1g.action_code = WLAN_S1G_TWT_TEARDOWN; + id = (u8 *)mgmt->u.action.u.s1g.variable; + *id = flowid; + + IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT | + IEEE80211_TX_CTL_REQ_TX_STATUS; + ieee80211_tx_skb(sdata, skb); +} + +static void +ieee80211_s1g_rx_twt_setup(struct ieee80211_sub_if_data *sdata, + struct sta_info *sta, struct sk_buff *skb) +{ + struct ieee80211_mgmt *mgmt = (void *)skb->data; + struct ieee80211_twt_setup *twt = (void *)mgmt->u.action.u.s1g.variable; + struct ieee80211_twt_params *twt_agrt = (void *)twt->params; + + twt_agrt->req_type &= cpu_to_le16(~IEEE80211_TWT_REQTYPE_REQUEST); + + /* broadcast TWT not supported yet */ + if (twt->control & IEEE80211_TWT_CONTROL_NEG_TYPE_BROADCAST) { + le16p_replace_bits(&twt_agrt->req_type, + TWT_SETUP_CMD_REJECT, + IEEE80211_TWT_REQTYPE_SETUP_CMD); + goto out; + } + + drv_add_twt_setup(sdata->local, sdata, &sta->sta, twt); +out: + ieee80211_s1g_send_twt_setup(sdata, mgmt->sa, sdata->vif.addr, twt); +} + +static void +ieee80211_s1g_rx_twt_teardown(struct ieee80211_sub_if_data *sdata, + struct sta_info *sta, struct sk_buff *skb) +{ + struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; + + drv_twt_teardown_request(sdata->local, sdata, &sta->sta, + mgmt->u.action.u.s1g.variable[0]); +} + +static void +ieee80211_s1g_tx_twt_setup_fail(struct ieee80211_sub_if_data *sdata, + struct sta_info *sta, struct sk_buff *skb) +{ + struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; + struct ieee80211_twt_setup *twt = (void *)mgmt->u.action.u.s1g.variable; + struct ieee80211_twt_params *twt_agrt = (void *)twt->params; + u8 flowid = le16_get_bits(twt_agrt->req_type, + IEEE80211_TWT_REQTYPE_FLOWID); + + drv_twt_teardown_request(sdata->local, sdata, &sta->sta, flowid); + + ieee80211_s1g_send_twt_teardown(sdata, mgmt->sa, sdata->vif.addr, + flowid); +} + +void ieee80211_s1g_rx_twt_action(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb) +{ + struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; + struct ieee80211_local *local = sdata->local; + struct sta_info *sta; + + mutex_lock(&local->sta_mtx); + + sta = sta_info_get_bss(sdata, mgmt->sa); + if (!sta) + goto out; + + switch (mgmt->u.action.u.s1g.action_code) { + case WLAN_S1G_TWT_SETUP: + ieee80211_s1g_rx_twt_setup(sdata, sta, skb); + break; + case WLAN_S1G_TWT_TEARDOWN: + ieee80211_s1g_rx_twt_teardown(sdata, sta, skb); + break; + default: + break; + } + +out: + mutex_unlock(&local->sta_mtx); +} + +void ieee80211_s1g_status_twt_action(struct ieee80211_sub_if_data *sdata, + struct sk_buff *skb) +{ + struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)skb->data; + struct ieee80211_local *local = sdata->local; + struct sta_info *sta; + + mutex_lock(&local->sta_mtx); + + sta = sta_info_get_bss(sdata, mgmt->da); + if (!sta) + goto out; + + switch (mgmt->u.action.u.s1g.action_code) { + case WLAN_S1G_TWT_SETUP: + /* process failed twt setup frames */ + ieee80211_s1g_tx_twt_setup_fail(sdata, sta, skb); + break; + default: + break; + } + +out: + mutex_unlock(&local->sta_mtx); +} |