mac80211: move some HT code out of main.c
Now that I've created ht.c, I can move the aggregation code from main.c into it. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
John W. Linville
parent
44d414dbff
commit
bacac545f1
2 changed files with 375 additions and 375 deletions
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@ -2,8 +2,8 @@
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* HT handling
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*
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* Copyright 2003, Jouni Malinen <jkmaline@cc.hut.fi>
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* Copyright 2004, Instant802 Networks, Inc.
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* Copyright 2005, Devicescape Software, Inc.
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* Copyright 2002-2005, Instant802 Networks, Inc.
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* Copyright 2005-2006, Devicescape Software, Inc.
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* Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
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* Copyright 2007, Michael Wu <flamingice@sourmilk.net>
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* Copyright 2007-2008, Intel Corporation
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@ -18,6 +18,7 @@
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#include <net/mac80211.h>
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#include "ieee80211_i.h"
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#include "sta_info.h"
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#include "wme.h"
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int ieee80211_ht_cap_ie_to_ht_info(struct ieee80211_ht_cap *ht_cap_ie,
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struct ieee80211_ht_info *ht_info)
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@ -326,3 +327,375 @@ void ieee80211_sta_tear_down_BA_sessions(struct ieee80211_sub_if_data *sdata, u8
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}
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}
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int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct sta_info *sta;
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struct ieee80211_sub_if_data *sdata;
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u16 start_seq_num;
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u8 *state;
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int ret;
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DECLARE_MAC_BUF(mac);
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if (tid >= STA_TID_NUM)
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return -EINVAL;
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "Open BA session requested for %s tid %u\n",
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print_mac(mac, ra), tid);
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#endif /* CONFIG_MAC80211_HT_DEBUG */
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rcu_read_lock();
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sta = sta_info_get(local, ra);
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if (!sta) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "Could not find the station\n");
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#endif
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ret = -ENOENT;
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goto exit;
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}
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spin_lock_bh(&sta->lock);
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/* we have tried too many times, receiver does not want A-MPDU */
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if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) {
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ret = -EBUSY;
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goto err_unlock_sta;
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}
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state = &sta->ampdu_mlme.tid_state_tx[tid];
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/* check if the TID is not in aggregation flow already */
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if (*state != HT_AGG_STATE_IDLE) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "BA request denied - session is not "
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"idle on tid %u\n", tid);
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#endif /* CONFIG_MAC80211_HT_DEBUG */
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ret = -EAGAIN;
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goto err_unlock_sta;
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}
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/* prepare A-MPDU MLME for Tx aggregation */
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sta->ampdu_mlme.tid_tx[tid] =
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kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC);
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if (!sta->ampdu_mlme.tid_tx[tid]) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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if (net_ratelimit())
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printk(KERN_ERR "allocate tx mlme to tid %d failed\n",
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tid);
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#endif
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ret = -ENOMEM;
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goto err_unlock_sta;
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}
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/* Tx timer */
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sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function =
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sta_addba_resp_timer_expired;
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sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.data =
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(unsigned long)&sta->timer_to_tid[tid];
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init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
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/* create a new queue for this aggregation */
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ret = ieee80211_ht_agg_queue_add(local, sta, tid);
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/* case no queue is available to aggregation
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* don't switch to aggregation */
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if (ret) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "BA request denied - queue unavailable for"
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" tid %d\n", tid);
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#endif /* CONFIG_MAC80211_HT_DEBUG */
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goto err_unlock_queue;
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}
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sdata = sta->sdata;
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/* Ok, the Addba frame hasn't been sent yet, but if the driver calls the
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* call back right away, it must see that the flow has begun */
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*state |= HT_ADDBA_REQUESTED_MSK;
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/* This is slightly racy because the queue isn't stopped */
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start_seq_num = sta->tid_seq[tid];
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if (local->ops->ampdu_action)
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ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START,
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ra, tid, &start_seq_num);
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if (ret) {
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/* No need to requeue the packets in the agg queue, since we
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* held the tx lock: no packet could be enqueued to the newly
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* allocated queue */
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ieee80211_ht_agg_queue_remove(local, sta, tid, 0);
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "BA request denied - HW unavailable for"
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" tid %d\n", tid);
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#endif /* CONFIG_MAC80211_HT_DEBUG */
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*state = HT_AGG_STATE_IDLE;
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goto err_unlock_queue;
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}
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/* Will put all the packets in the new SW queue */
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ieee80211_requeue(local, ieee802_1d_to_ac[tid]);
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spin_unlock_bh(&sta->lock);
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/* send an addBA request */
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sta->ampdu_mlme.dialog_token_allocator++;
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sta->ampdu_mlme.tid_tx[tid]->dialog_token =
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sta->ampdu_mlme.dialog_token_allocator;
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sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num;
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ieee80211_send_addba_request(sta->sdata, ra, tid,
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sta->ampdu_mlme.tid_tx[tid]->dialog_token,
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sta->ampdu_mlme.tid_tx[tid]->ssn,
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0x40, 5000);
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/* activate the timer for the recipient's addBA response */
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sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.expires =
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jiffies + ADDBA_RESP_INTERVAL;
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add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid);
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#endif
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goto exit;
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err_unlock_queue:
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kfree(sta->ampdu_mlme.tid_tx[tid]);
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sta->ampdu_mlme.tid_tx[tid] = NULL;
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ret = -EBUSY;
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err_unlock_sta:
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spin_unlock_bh(&sta->lock);
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exit:
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rcu_read_unlock();
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return ret;
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}
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EXPORT_SYMBOL(ieee80211_start_tx_ba_session);
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int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw,
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u8 *ra, u16 tid,
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enum ieee80211_back_parties initiator)
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct sta_info *sta;
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u8 *state;
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int ret = 0;
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DECLARE_MAC_BUF(mac);
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if (tid >= STA_TID_NUM)
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return -EINVAL;
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rcu_read_lock();
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sta = sta_info_get(local, ra);
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if (!sta) {
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rcu_read_unlock();
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return -ENOENT;
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}
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/* check if the TID is in aggregation */
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state = &sta->ampdu_mlme.tid_state_tx[tid];
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spin_lock_bh(&sta->lock);
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if (*state != HT_AGG_STATE_OPERATIONAL) {
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ret = -ENOENT;
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goto stop_BA_exit;
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}
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "Tx BA session stop requested for %s tid %u\n",
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print_mac(mac, ra), tid);
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#endif /* CONFIG_MAC80211_HT_DEBUG */
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ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]);
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*state = HT_AGG_STATE_REQ_STOP_BA_MSK |
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(initiator << HT_AGG_STATE_INITIATOR_SHIFT);
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if (local->ops->ampdu_action)
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ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP,
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ra, tid, NULL);
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/* case HW denied going back to legacy */
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if (ret) {
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WARN_ON(ret != -EBUSY);
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*state = HT_AGG_STATE_OPERATIONAL;
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ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
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goto stop_BA_exit;
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}
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stop_BA_exit:
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spin_unlock_bh(&sta->lock);
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rcu_read_unlock();
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return ret;
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}
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EXPORT_SYMBOL(ieee80211_stop_tx_ba_session);
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void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid)
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct sta_info *sta;
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u8 *state;
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DECLARE_MAC_BUF(mac);
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if (tid >= STA_TID_NUM) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
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tid, STA_TID_NUM);
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#endif
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return;
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}
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rcu_read_lock();
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sta = sta_info_get(local, ra);
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if (!sta) {
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rcu_read_unlock();
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "Could not find station: %s\n",
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print_mac(mac, ra));
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#endif
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return;
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}
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state = &sta->ampdu_mlme.tid_state_tx[tid];
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spin_lock_bh(&sta->lock);
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if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "addBA was not requested yet, state is %d\n",
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*state);
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#endif
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spin_unlock_bh(&sta->lock);
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rcu_read_unlock();
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return;
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}
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WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK);
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*state |= HT_ADDBA_DRV_READY_MSK;
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if (*state == HT_AGG_STATE_OPERATIONAL) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid);
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#endif
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ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
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}
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spin_unlock_bh(&sta->lock);
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rcu_read_unlock();
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}
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EXPORT_SYMBOL(ieee80211_start_tx_ba_cb);
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void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct sta_info *sta;
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u8 *state;
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int agg_queue;
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DECLARE_MAC_BUF(mac);
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if (tid >= STA_TID_NUM) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
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tid, STA_TID_NUM);
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#endif
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return;
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}
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "Stopping Tx BA session for %s tid %d\n",
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print_mac(mac, ra), tid);
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#endif /* CONFIG_MAC80211_HT_DEBUG */
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rcu_read_lock();
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sta = sta_info_get(local, ra);
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if (!sta) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "Could not find station: %s\n",
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print_mac(mac, ra));
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#endif
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rcu_read_unlock();
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return;
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}
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state = &sta->ampdu_mlme.tid_state_tx[tid];
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/* NOTE: no need to use sta->lock in this state check, as
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* ieee80211_stop_tx_ba_session will let only one stop call to
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* pass through per sta/tid
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*/
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if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n");
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#endif
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rcu_read_unlock();
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return;
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}
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if (*state & HT_AGG_STATE_INITIATOR_MSK)
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ieee80211_send_delba(sta->sdata, ra, tid,
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WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE);
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agg_queue = sta->tid_to_tx_q[tid];
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ieee80211_ht_agg_queue_remove(local, sta, tid, 1);
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/* We just requeued the all the frames that were in the
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* removed queue, and since we might miss a softirq we do
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* netif_schedule_queue. ieee80211_wake_queue is not used
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* here as this queue is not necessarily stopped
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*/
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netif_schedule_queue(netdev_get_tx_queue(local->mdev, agg_queue));
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spin_lock_bh(&sta->lock);
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*state = HT_AGG_STATE_IDLE;
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sta->ampdu_mlme.addba_req_num[tid] = 0;
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kfree(sta->ampdu_mlme.tid_tx[tid]);
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sta->ampdu_mlme.tid_tx[tid] = NULL;
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spin_unlock_bh(&sta->lock);
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rcu_read_unlock();
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}
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EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb);
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void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
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const u8 *ra, u16 tid)
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct ieee80211_ra_tid *ra_tid;
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struct sk_buff *skb = dev_alloc_skb(0);
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if (unlikely(!skb)) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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if (net_ratelimit())
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printk(KERN_WARNING "%s: Not enough memory, "
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"dropping start BA session", skb->dev->name);
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#endif
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return;
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}
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ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
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memcpy(&ra_tid->ra, ra, ETH_ALEN);
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ra_tid->tid = tid;
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skb->pkt_type = IEEE80211_ADDBA_MSG;
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skb_queue_tail(&local->skb_queue, skb);
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tasklet_schedule(&local->tasklet);
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}
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EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe);
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void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
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const u8 *ra, u16 tid)
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct ieee80211_ra_tid *ra_tid;
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struct sk_buff *skb = dev_alloc_skb(0);
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if (unlikely(!skb)) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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if (net_ratelimit())
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printk(KERN_WARNING "%s: Not enough memory, "
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"dropping stop BA session", skb->dev->name);
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#endif
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return;
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}
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ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
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memcpy(&ra_tid->ra, ra, ETH_ALEN);
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ra_tid->tid = tid;
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skb->pkt_type = IEEE80211_DELBA_MSG;
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skb_queue_tail(&local->skb_queue, skb);
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tasklet_schedule(&local->tasklet);
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}
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EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe);
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@ -593,379 +593,6 @@ static int ieee80211_stop(struct net_device *dev)
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return 0;
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}
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int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
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{
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struct ieee80211_local *local = hw_to_local(hw);
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struct sta_info *sta;
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struct ieee80211_sub_if_data *sdata;
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u16 start_seq_num;
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u8 *state;
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int ret;
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DECLARE_MAC_BUF(mac);
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if (tid >= STA_TID_NUM)
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return -EINVAL;
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "Open BA session requested for %s tid %u\n",
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print_mac(mac, ra), tid);
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#endif /* CONFIG_MAC80211_HT_DEBUG */
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rcu_read_lock();
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sta = sta_info_get(local, ra);
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if (!sta) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "Could not find the station\n");
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#endif
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ret = -ENOENT;
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goto exit;
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}
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spin_lock_bh(&sta->lock);
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/* we have tried too many times, receiver does not want A-MPDU */
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if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) {
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ret = -EBUSY;
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goto err_unlock_sta;
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}
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state = &sta->ampdu_mlme.tid_state_tx[tid];
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/* check if the TID is not in aggregation flow already */
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if (*state != HT_AGG_STATE_IDLE) {
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#ifdef CONFIG_MAC80211_HT_DEBUG
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printk(KERN_DEBUG "BA request denied - session is not "
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"idle on tid %u\n", tid);
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#endif /* CONFIG_MAC80211_HT_DEBUG */
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ret = -EAGAIN;
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goto err_unlock_sta;
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}
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||||
|
||||
/* prepare A-MPDU MLME for Tx aggregation */
|
||||
sta->ampdu_mlme.tid_tx[tid] =
|
||||
kmalloc(sizeof(struct tid_ampdu_tx), GFP_ATOMIC);
|
||||
if (!sta->ampdu_mlme.tid_tx[tid]) {
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
if (net_ratelimit())
|
||||
printk(KERN_ERR "allocate tx mlme to tid %d failed\n",
|
||||
tid);
|
||||
#endif
|
||||
ret = -ENOMEM;
|
||||
goto err_unlock_sta;
|
||||
}
|
||||
/* Tx timer */
|
||||
sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.function =
|
||||
sta_addba_resp_timer_expired;
|
||||
sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.data =
|
||||
(unsigned long)&sta->timer_to_tid[tid];
|
||||
init_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
|
||||
|
||||
/* create a new queue for this aggregation */
|
||||
ret = ieee80211_ht_agg_queue_add(local, sta, tid);
|
||||
|
||||
/* case no queue is available to aggregation
|
||||
* don't switch to aggregation */
|
||||
if (ret) {
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "BA request denied - queue unavailable for"
|
||||
" tid %d\n", tid);
|
||||
#endif /* CONFIG_MAC80211_HT_DEBUG */
|
||||
goto err_unlock_queue;
|
||||
}
|
||||
sdata = sta->sdata;
|
||||
|
||||
/* Ok, the Addba frame hasn't been sent yet, but if the driver calls the
|
||||
* call back right away, it must see that the flow has begun */
|
||||
*state |= HT_ADDBA_REQUESTED_MSK;
|
||||
|
||||
/* This is slightly racy because the queue isn't stopped */
|
||||
start_seq_num = sta->tid_seq[tid];
|
||||
|
||||
if (local->ops->ampdu_action)
|
||||
ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_START,
|
||||
ra, tid, &start_seq_num);
|
||||
|
||||
if (ret) {
|
||||
/* No need to requeue the packets in the agg queue, since we
|
||||
* held the tx lock: no packet could be enqueued to the newly
|
||||
* allocated queue */
|
||||
ieee80211_ht_agg_queue_remove(local, sta, tid, 0);
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "BA request denied - HW unavailable for"
|
||||
" tid %d\n", tid);
|
||||
#endif /* CONFIG_MAC80211_HT_DEBUG */
|
||||
*state = HT_AGG_STATE_IDLE;
|
||||
goto err_unlock_queue;
|
||||
}
|
||||
|
||||
/* Will put all the packets in the new SW queue */
|
||||
ieee80211_requeue(local, ieee802_1d_to_ac[tid]);
|
||||
spin_unlock_bh(&sta->lock);
|
||||
|
||||
/* send an addBA request */
|
||||
sta->ampdu_mlme.dialog_token_allocator++;
|
||||
sta->ampdu_mlme.tid_tx[tid]->dialog_token =
|
||||
sta->ampdu_mlme.dialog_token_allocator;
|
||||
sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num;
|
||||
|
||||
|
||||
ieee80211_send_addba_request(sta->sdata, ra, tid,
|
||||
sta->ampdu_mlme.tid_tx[tid]->dialog_token,
|
||||
sta->ampdu_mlme.tid_tx[tid]->ssn,
|
||||
0x40, 5000);
|
||||
/* activate the timer for the recipient's addBA response */
|
||||
sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer.expires =
|
||||
jiffies + ADDBA_RESP_INTERVAL;
|
||||
add_timer(&sta->ampdu_mlme.tid_tx[tid]->addba_resp_timer);
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid);
|
||||
#endif
|
||||
goto exit;
|
||||
|
||||
err_unlock_queue:
|
||||
kfree(sta->ampdu_mlme.tid_tx[tid]);
|
||||
sta->ampdu_mlme.tid_tx[tid] = NULL;
|
||||
ret = -EBUSY;
|
||||
err_unlock_sta:
|
||||
spin_unlock_bh(&sta->lock);
|
||||
exit:
|
||||
rcu_read_unlock();
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL(ieee80211_start_tx_ba_session);
|
||||
|
||||
int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw,
|
||||
u8 *ra, u16 tid,
|
||||
enum ieee80211_back_parties initiator)
|
||||
{
|
||||
struct ieee80211_local *local = hw_to_local(hw);
|
||||
struct sta_info *sta;
|
||||
u8 *state;
|
||||
int ret = 0;
|
||||
DECLARE_MAC_BUF(mac);
|
||||
|
||||
if (tid >= STA_TID_NUM)
|
||||
return -EINVAL;
|
||||
|
||||
rcu_read_lock();
|
||||
sta = sta_info_get(local, ra);
|
||||
if (!sta) {
|
||||
rcu_read_unlock();
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
/* check if the TID is in aggregation */
|
||||
state = &sta->ampdu_mlme.tid_state_tx[tid];
|
||||
spin_lock_bh(&sta->lock);
|
||||
|
||||
if (*state != HT_AGG_STATE_OPERATIONAL) {
|
||||
ret = -ENOENT;
|
||||
goto stop_BA_exit;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "Tx BA session stop requested for %s tid %u\n",
|
||||
print_mac(mac, ra), tid);
|
||||
#endif /* CONFIG_MAC80211_HT_DEBUG */
|
||||
|
||||
ieee80211_stop_queue(hw, sta->tid_to_tx_q[tid]);
|
||||
|
||||
*state = HT_AGG_STATE_REQ_STOP_BA_MSK |
|
||||
(initiator << HT_AGG_STATE_INITIATOR_SHIFT);
|
||||
|
||||
if (local->ops->ampdu_action)
|
||||
ret = local->ops->ampdu_action(hw, IEEE80211_AMPDU_TX_STOP,
|
||||
ra, tid, NULL);
|
||||
|
||||
/* case HW denied going back to legacy */
|
||||
if (ret) {
|
||||
WARN_ON(ret != -EBUSY);
|
||||
*state = HT_AGG_STATE_OPERATIONAL;
|
||||
ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
|
||||
goto stop_BA_exit;
|
||||
}
|
||||
|
||||
stop_BA_exit:
|
||||
spin_unlock_bh(&sta->lock);
|
||||
rcu_read_unlock();
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL(ieee80211_stop_tx_ba_session);
|
||||
|
||||
void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid)
|
||||
{
|
||||
struct ieee80211_local *local = hw_to_local(hw);
|
||||
struct sta_info *sta;
|
||||
u8 *state;
|
||||
DECLARE_MAC_BUF(mac);
|
||||
|
||||
if (tid >= STA_TID_NUM) {
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
|
||||
tid, STA_TID_NUM);
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
|
||||
rcu_read_lock();
|
||||
sta = sta_info_get(local, ra);
|
||||
if (!sta) {
|
||||
rcu_read_unlock();
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "Could not find station: %s\n",
|
||||
print_mac(mac, ra));
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
|
||||
state = &sta->ampdu_mlme.tid_state_tx[tid];
|
||||
spin_lock_bh(&sta->lock);
|
||||
|
||||
if (!(*state & HT_ADDBA_REQUESTED_MSK)) {
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "addBA was not requested yet, state is %d\n",
|
||||
*state);
|
||||
#endif
|
||||
spin_unlock_bh(&sta->lock);
|
||||
rcu_read_unlock();
|
||||
return;
|
||||
}
|
||||
|
||||
WARN_ON_ONCE(*state & HT_ADDBA_DRV_READY_MSK);
|
||||
|
||||
*state |= HT_ADDBA_DRV_READY_MSK;
|
||||
|
||||
if (*state == HT_AGG_STATE_OPERATIONAL) {
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "Aggregation is on for tid %d \n", tid);
|
||||
#endif
|
||||
ieee80211_wake_queue(hw, sta->tid_to_tx_q[tid]);
|
||||
}
|
||||
spin_unlock_bh(&sta->lock);
|
||||
rcu_read_unlock();
|
||||
}
|
||||
EXPORT_SYMBOL(ieee80211_start_tx_ba_cb);
|
||||
|
||||
void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
|
||||
{
|
||||
struct ieee80211_local *local = hw_to_local(hw);
|
||||
struct sta_info *sta;
|
||||
u8 *state;
|
||||
int agg_queue;
|
||||
DECLARE_MAC_BUF(mac);
|
||||
|
||||
if (tid >= STA_TID_NUM) {
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "Bad TID value: tid = %d (>= %d)\n",
|
||||
tid, STA_TID_NUM);
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "Stopping Tx BA session for %s tid %d\n",
|
||||
print_mac(mac, ra), tid);
|
||||
#endif /* CONFIG_MAC80211_HT_DEBUG */
|
||||
|
||||
rcu_read_lock();
|
||||
sta = sta_info_get(local, ra);
|
||||
if (!sta) {
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "Could not find station: %s\n",
|
||||
print_mac(mac, ra));
|
||||
#endif
|
||||
rcu_read_unlock();
|
||||
return;
|
||||
}
|
||||
state = &sta->ampdu_mlme.tid_state_tx[tid];
|
||||
|
||||
/* NOTE: no need to use sta->lock in this state check, as
|
||||
* ieee80211_stop_tx_ba_session will let only one stop call to
|
||||
* pass through per sta/tid
|
||||
*/
|
||||
if ((*state & HT_AGG_STATE_REQ_STOP_BA_MSK) == 0) {
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
printk(KERN_DEBUG "unexpected callback to A-MPDU stop\n");
|
||||
#endif
|
||||
rcu_read_unlock();
|
||||
return;
|
||||
}
|
||||
|
||||
if (*state & HT_AGG_STATE_INITIATOR_MSK)
|
||||
ieee80211_send_delba(sta->sdata, ra, tid,
|
||||
WLAN_BACK_INITIATOR, WLAN_REASON_QSTA_NOT_USE);
|
||||
|
||||
agg_queue = sta->tid_to_tx_q[tid];
|
||||
|
||||
ieee80211_ht_agg_queue_remove(local, sta, tid, 1);
|
||||
|
||||
/* We just requeued the all the frames that were in the
|
||||
* removed queue, and since we might miss a softirq we do
|
||||
* netif_schedule_queue. ieee80211_wake_queue is not used
|
||||
* here as this queue is not necessarily stopped
|
||||
*/
|
||||
netif_schedule_queue(netdev_get_tx_queue(local->mdev, agg_queue));
|
||||
spin_lock_bh(&sta->lock);
|
||||
*state = HT_AGG_STATE_IDLE;
|
||||
sta->ampdu_mlme.addba_req_num[tid] = 0;
|
||||
kfree(sta->ampdu_mlme.tid_tx[tid]);
|
||||
sta->ampdu_mlme.tid_tx[tid] = NULL;
|
||||
spin_unlock_bh(&sta->lock);
|
||||
|
||||
rcu_read_unlock();
|
||||
}
|
||||
EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb);
|
||||
|
||||
void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
|
||||
const u8 *ra, u16 tid)
|
||||
{
|
||||
struct ieee80211_local *local = hw_to_local(hw);
|
||||
struct ieee80211_ra_tid *ra_tid;
|
||||
struct sk_buff *skb = dev_alloc_skb(0);
|
||||
|
||||
if (unlikely(!skb)) {
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
if (net_ratelimit())
|
||||
printk(KERN_WARNING "%s: Not enough memory, "
|
||||
"dropping start BA session", skb->dev->name);
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
|
||||
memcpy(&ra_tid->ra, ra, ETH_ALEN);
|
||||
ra_tid->tid = tid;
|
||||
|
||||
skb->pkt_type = IEEE80211_ADDBA_MSG;
|
||||
skb_queue_tail(&local->skb_queue, skb);
|
||||
tasklet_schedule(&local->tasklet);
|
||||
}
|
||||
EXPORT_SYMBOL(ieee80211_start_tx_ba_cb_irqsafe);
|
||||
|
||||
void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
|
||||
const u8 *ra, u16 tid)
|
||||
{
|
||||
struct ieee80211_local *local = hw_to_local(hw);
|
||||
struct ieee80211_ra_tid *ra_tid;
|
||||
struct sk_buff *skb = dev_alloc_skb(0);
|
||||
|
||||
if (unlikely(!skb)) {
|
||||
#ifdef CONFIG_MAC80211_HT_DEBUG
|
||||
if (net_ratelimit())
|
||||
printk(KERN_WARNING "%s: Not enough memory, "
|
||||
"dropping stop BA session", skb->dev->name);
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
|
||||
memcpy(&ra_tid->ra, ra, ETH_ALEN);
|
||||
ra_tid->tid = tid;
|
||||
|
||||
skb->pkt_type = IEEE80211_DELBA_MSG;
|
||||
skb_queue_tail(&local->skb_queue, skb);
|
||||
tasklet_schedule(&local->tasklet);
|
||||
}
|
||||
EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb_irqsafe);
|
||||
|
||||
static void ieee80211_set_multicast_list(struct net_device *dev)
|
||||
{
|
||||
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
||||
|
|
|
|||
Loading…
Reference in a new issue