__le64 hw_tkip_mic_tx_key;
} __packed;
-#define IWL_ADD_STA_STATUS_MASK 0xFF
-#define IWL_ADD_STA_BAID_MASK 0xFF00
+#define IWL_ADD_STA_STATUS_MASK 0xFF
+#define IWL_ADD_STA_BAID_VALID_MASK 0x8000
+#define IWL_ADD_STA_BAID_MASK 0x7F00
+#define IWL_ADD_STA_BAID_SHIFT 8
/**
* struct iwl_mvm_add_sta_cmd_v7 - Add/modify a station in the fw's sta table.
u16 *ssn = ¶ms->ssn;
u8 buf_size = params->buf_size;
bool amsdu = params->amsdu;
+ u16 timeout = params->timeout;
IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
sta->addr, tid, action);
ret = -EINVAL;
break;
}
- ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size);
+ ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true, buf_size,
+ timeout);
break;
case IEEE80211_AMPDU_RX_STOP:
- ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size);
+ ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false, buf_size,
+ timeout);
break;
case IEEE80211_AMPDU_TX_START:
if (!iwl_enable_tx_ampdu(mvm->cfg)) {
u32 internal_txfifo_size[TX_FIFO_INTERNAL_MAX_NUM];
};
+/**
+ * struct iwl_mvm_baid_data - BA session data
+ * @sta_id: station id
+ * @tid: tid of the session
+ * @baid baid of the session
+ * @timeout: the timeout set in the addba request
+ * @last_rx: last rx jiffies, updated only if timeout passed from last update
+ * @session_timer: timer to check if BA session expired, runs at 2 * timeout
+ * @mvm: mvm pointer, needed for timer context
+ */
+struct iwl_mvm_baid_data {
+ struct rcu_head rcu_head;
+ u8 sta_id;
+ u8 tid;
+ u8 baid;
+ u16 timeout;
+ unsigned long last_rx;
+ struct timer_list session_timer;
+ struct iwl_mvm *mvm;
+};
+
struct iwl_mvm {
/* for logger access */
struct device *dev;
u32 ciphers[6];
struct iwl_mvm_tof_data tof_data;
+ struct ieee80211_vif *nan_vif;
+#define IWL_MAX_BAID 32
+ struct iwl_mvm_baid_data __rcu *baid_map[IWL_MAX_BAID];
+
/*
* Drop beacons from other APs in AP mode when there are no connected
* clients.
}
}
+static void iwl_mvm_agg_rx_received(struct iwl_mvm *mvm, u8 baid)
+{
+ unsigned long now = jiffies;
+ unsigned long timeout;
+ struct iwl_mvm_baid_data *data;
+
+ rcu_read_lock();
+
+ data = rcu_dereference(mvm->baid_map[baid]);
+ if (WARN_ON(!data))
+ goto out;
+
+ if (!data->timeout)
+ goto out;
+
+ timeout = data->timeout;
+ /*
+ * Do not update last rx all the time to avoid cache bouncing
+ * between the rx queues.
+ * Update it every timeout. Worst case is the session will
+ * expire after ~ 2 * timeout, which doesn't matter that much.
+ */
+ if (time_before(data->last_rx + TU_TO_JIFFIES(timeout), now))
+ /* Update is atomic */
+ data->last_rx = now;
+
+out:
+ rcu_read_unlock();
+}
+
void iwl_mvm_rx_mpdu_mq(struct iwl_mvm *mvm, struct napi_struct *napi,
struct iwl_rx_cmd_buffer *rxb, int queue)
{
if (sta) {
struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
+ u8 baid = (u8)((le32_to_cpu(desc->reorder_data) &
+ IWL_RX_MPDU_REORDER_BAID_MASK) >>
+ IWL_RX_MPDU_REORDER_BAID_SHIFT);
/*
* We have tx blocked stations (with CS bit). If we heard
*qc &= ~IEEE80211_QOS_CTL_A_MSDU_PRESENT;
}
+ if (baid != IWL_RX_REORDER_DATA_INVALID_BAID)
+ iwl_mvm_agg_rx_received(mvm, baid);
}
/*
return ret;
}
+static void iwl_mvm_rx_agg_session_expired(unsigned long data)
+{
+ struct iwl_mvm_baid_data __rcu **rcu_ptr = (void *)data;
+ struct iwl_mvm_baid_data *ba_data;
+ struct ieee80211_sta *sta;
+ struct iwl_mvm_sta *mvm_sta;
+ unsigned long timeout;
+
+ rcu_read_lock();
+
+ ba_data = rcu_dereference(*rcu_ptr);
+
+ if (WARN_ON(!ba_data))
+ goto unlock;
+
+ if (!ba_data->timeout)
+ goto unlock;
+
+ timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2);
+ if (time_is_after_jiffies(timeout)) {
+ mod_timer(&ba_data->session_timer, timeout);
+ goto unlock;
+ }
+
+ /* Timer expired */
+ sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[ba_data->sta_id]);
+ mvm_sta = iwl_mvm_sta_from_mac80211(sta);
+ ieee80211_stop_rx_ba_session_offl(mvm_sta->vif,
+ sta->addr, ba_data->tid);
+unlock:
+ rcu_read_unlock();
+}
+
static int iwl_mvm_tdls_sta_init(struct iwl_mvm *mvm,
struct ieee80211_sta *sta)
{
#define IWL_MAX_RX_BA_SESSIONS 16
+static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm)
+{
+ struct iwl_mvm_internal_rxq_notif data = {
+ .type = IWL_MVM_RXQ_EMPTY,
+ .sync = 1,
+ };
+
+ iwl_mvm_sync_rx_queues_internal(mvm, &data, sizeof(data));
+}
+
int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
- int tid, u16 ssn, bool start, u8 buf_size)
+ int tid, u16 ssn, bool start, u8 buf_size, u16 timeout)
{
struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);
struct iwl_mvm_add_sta_cmd cmd = {};
+ struct iwl_mvm_baid_data *baid_data = NULL;
int ret;
u32 status;
return -ENOSPC;
}
+ if (iwl_mvm_has_new_rx_api(mvm) && start) {
+ /*
+ * Allocate here so if allocation fails we can bail out early
+ * before starting the BA session in the firmware
+ */
+ baid_data = kzalloc(sizeof(*baid_data), GFP_KERNEL);
+ if (!baid_data)
+ return -ENOMEM;
+ }
+
cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);
cmd.sta_id = mvm_sta->sta_id;
cmd.add_modify = STA_MODE_MODIFY;
iwl_mvm_add_sta_cmd_size(mvm),
&cmd, &status);
if (ret)
- return ret;
+ goto out_free;
switch (status & IWL_ADD_STA_STATUS_MASK) {
case ADD_STA_SUCCESS:
break;
}
- if (!ret) {
- if (start)
- mvm->rx_ba_sessions++;
- else if (mvm->rx_ba_sessions > 0)
- /* check that restart flow didn't zero the counter */
- mvm->rx_ba_sessions--;
+ if (ret)
+ goto out_free;
+
+ if (start) {
+ u8 baid;
+
+ mvm->rx_ba_sessions++;
+
+ if (!iwl_mvm_has_new_rx_api(mvm))
+ return 0;
+
+ if (WARN_ON(!(status & IWL_ADD_STA_BAID_VALID_MASK))) {
+ ret = -EINVAL;
+ goto out_free;
+ }
+ baid = (u8)((status & IWL_ADD_STA_BAID_MASK) >>
+ IWL_ADD_STA_BAID_SHIFT);
+ baid_data->baid = baid;
+ baid_data->timeout = timeout;
+ baid_data->last_rx = jiffies;
+ init_timer(&baid_data->session_timer);
+ baid_data->session_timer.function =
+ iwl_mvm_rx_agg_session_expired;
+ baid_data->session_timer.data =
+ (unsigned long)&mvm->baid_map[baid];
+ baid_data->mvm = mvm;
+ baid_data->tid = tid;
+ baid_data->sta_id = mvm_sta->sta_id;
+
+ mvm_sta->tid_to_baid[tid] = baid;
+ if (timeout)
+ mod_timer(&baid_data->session_timer,
+ TU_TO_EXP_TIME(timeout * 2));
+
+ /*
+ * protect the BA data with RCU to cover a case where our
+ * internal RX sync mechanism will timeout (not that it's
+ * supposed to happen) and we will free the session data while
+ * RX is being processed in parallel
+ */
+ WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));
+ rcu_assign_pointer(mvm->baid_map[baid], baid_data);
+ } else if (mvm->rx_ba_sessions > 0) {
+ u8 baid = mvm_sta->tid_to_baid[tid];
+
+ /* check that restart flow didn't zero the counter */
+ mvm->rx_ba_sessions--;
+ if (!iwl_mvm_has_new_rx_api(mvm))
+ return 0;
+
+ if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))
+ return -EINVAL;
+
+ baid_data = rcu_access_pointer(mvm->baid_map[baid]);
+ if (WARN_ON(!baid_data))
+ return -EINVAL;
+
+ /* synchronize all rx queues so we can safely delete */
+ iwl_mvm_sync_rxq_del_ba(mvm);
+ del_timer_sync(&baid_data->session_timer);
+
+ RCU_INIT_POINTER(mvm->baid_map[baid], NULL);
+ kfree_rcu(baid_data, rcu_head);
}
+ return 0;
+out_free:
+ kfree(baid_data);
return ret;
}
* @lock: lock to protect the whole struct. Since %tid_data is access from Tx
* and from Tx response flow, it needs a spinlock.
* @tid_data: per tid data + mgmt. Look at %iwl_mvm_tid_data.
+ * @tid_to_baid: a simple map of TID to baid
* @reserved_queue: the queue reserved for this STA for DQA purposes
* Every STA has is given one reserved queue to allow it to operate. If no
* such queue can be guaranteed, the STA addition will fail.
bool next_status_eosp;
spinlock_t lock;
struct iwl_mvm_tid_data tid_data[IWL_MAX_TID_COUNT + 1];
+ u8 tid_to_baid[IWL_MAX_TID_COUNT];
struct iwl_lq_sta lq_sta;
struct ieee80211_vif *vif;
struct iwl_mvm_key_pn __rcu *ptk_pn[4];
/* AMPDU */
int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
- int tid, u16 ssn, bool start, u8 buf_size);
+ int tid, u16 ssn, bool start, u8 buf_size, u16 timeout);
int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, u16 tid, u16 *ssn);
int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
projects / platform / kernel / linux-amlogic.git / commitdiff