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mac80211: convert aggregation to operate on vifs/stas

Browse source 
The entire aggregation code currently operates on the
hw pointer and station addresses, but that needs to
change to make stations purely per-vif; As one step
preparing for that make the aggregation code callable
with the station, or by the combination of virtual
interface and station address.

Signed-off-by: Johannes Berg <[email protected]>
Signed-off-by: John W. Linville <[email protected]>
This commit is contained in:
Johannes Berg 2009-11-16 12:00:38 +01:00 • committed by John W. Linville
commit c951ad3550
14 changed files with 84 additions and 97 deletions
Download patch file Download diff file Expand all files Collapse all files

6
net/mac80211/agg-rx.c
View file

@ -41,7 +41,8 @@ void __ieee80211_stop_rx_ba_session(struct sta_info *sta, u16 tid,
sta->sta.addr, tid);
#endif /* CONFIG_MAC80211_HT_DEBUG */
if (drv_ampdu_action(local, IEEE80211_AMPDU_RX_STOP,
if (drv_ampdu_action(local, &sta->sdata->vif,
IEEE80211_AMPDU_RX_STOP,
&sta->sta, tid, NULL))
printk(KERN_DEBUG "HW problem - can not stop rx "
"aggregation for tid %d\n", tid);
@ -284,7 +285,8 @@ void ieee80211_process_addba_request(struct ieee80211_local *local,
goto end;
}
ret = drv_ampdu_action(local, IEEE80211_AMPDU_RX_START,
ret = drv_ampdu_action(local, &sta->sdata->vif,
IEEE80211_AMPDU_RX_START,
&sta->sta, tid, &start_seq_num);
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Rx A-MPDU request on tid %d result %d\n", tid, ret);

96
net/mac80211/agg-tx.c
View file

@ -138,7 +138,8 @@ static int ___ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
*state = HT_AGG_STATE_REQ_STOP_BA_MSK |
(initiator << HT_AGG_STATE_INITIATOR_SHIFT);
ret = drv_ampdu_action(local, IEEE80211_AMPDU_TX_STOP,
ret = drv_ampdu_action(local, &sta->sdata->vif,
IEEE80211_AMPDU_TX_STOP,
&sta->sta, tid, NULL);
/* HW shall not deny going back to legacy */
@ -196,11 +197,11 @@ static inline int ieee80211_ac_from_tid(int tid)
return ieee802_1d_to_ac[tid & 7];
}
int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
int ieee80211_start_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid)
{
struct ieee80211_local *local = hw_to_local(hw);
struct sta_info *sta;
struct ieee80211_sub_if_data *sdata;
struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct ieee80211_local *local = sdata->local;
u8 *state;
int ret = 0;
u16 start_seq_num;
@ -208,52 +209,37 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
if (WARN_ON(!local->ops->ampdu_action))
return -EINVAL;
if ((tid >= STA_TID_NUM) || !(hw->flags & IEEE80211_HW_AMPDU_AGGREGATION))
if ((tid >= STA_TID_NUM) ||
!(local->hw.flags & IEEE80211_HW_AMPDU_AGGREGATION))
return -EINVAL;
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Open BA session requested for %pM tid %u\n",
ra, tid);
pubsta->addr, 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 the station\n");
#endif
ret = -ENOENT;
goto unlock;
}
/*
* The aggregation code is not prepared to handle
* anything but STA/AP due to the BSSID handling.
* IBSS could work in the code but isn't supported
* by drivers or the standard.
*/
if (sta->sdata->vif.type != NL80211_IFTYPE_STATION &&
sta->sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
sta->sdata->vif.type != NL80211_IFTYPE_AP) {
ret = -EINVAL;
goto unlock;
}
if (sdata->vif.type != NL80211_IFTYPE_STATION &&
sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
sdata->vif.type != NL80211_IFTYPE_AP)
return -EINVAL;
if (test_sta_flags(sta, WLAN_STA_SUSPEND)) {
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "Suspend in progress. "
"Denying BA session request\n");
#endif
ret = -EINVAL;
goto unlock;
return -EINVAL;
}
spin_lock_bh(&sta->lock);
spin_lock(&local->ampdu_lock);
sdata = sta->sdata;
/* we have tried too many times, receiver does not want A-MPDU */
if (sta->ampdu_mlme.addba_req_num[tid] > HT_AGG_MAX_RETRIES) {
ret = -EBUSY;
@ -310,8 +296,9 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
start_seq_num = sta->tid_seq[tid];
ret = drv_ampdu_action(local, IEEE80211_AMPDU_TX_START,
&sta->sta, tid, &start_seq_num);
ret = drv_ampdu_action(local, &sdata->vif,
IEEE80211_AMPDU_TX_START,
pubsta, tid, &start_seq_num);
if (ret) {
#ifdef CONFIG_MAC80211_HT_DEBUG
@ -336,7 +323,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
sta->ampdu_mlme.dialog_token_allocator;
sta->ampdu_mlme.tid_tx[tid]->ssn = start_seq_num;
ieee80211_send_addba_request(sta->sdata, ra, tid,
ieee80211_send_addba_request(sdata, pubsta->addr, tid,
sta->ampdu_mlme.tid_tx[tid]->dialog_token,
sta->ampdu_mlme.tid_tx[tid]->ssn,
0x40, 5000);
@ -348,7 +335,7 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
#ifdef CONFIG_MAC80211_HT_DEBUG
printk(KERN_DEBUG "activated addBA response timer on tid %d\n", tid);
#endif
goto unlock;
return 0;
err_free:
kfree(sta->ampdu_mlme.tid_tx[tid]);
@ -360,8 +347,6 @@ int ieee80211_start_tx_ba_session(struct ieee80211_hw *hw, u8 *ra, u16 tid)
err_unlock_sta:
spin_unlock(&local->ampdu_lock);
spin_unlock_bh(&sta->lock);
unlock:
rcu_read_unlock();
return ret;
}
EXPORT_SYMBOL(ieee80211_start_tx_ba_session);
@ -428,13 +413,15 @@ static void ieee80211_agg_tx_operational(struct ieee80211_local *local,
ieee80211_agg_splice_finish(local, sta, tid);
spin_unlock(&local->ampdu_lock);
drv_ampdu_action(local, IEEE80211_AMPDU_TX_OPERATIONAL,
drv_ampdu_action(local, &sta->sdata->vif,
IEEE80211_AMPDU_TX_OPERATIONAL,
&sta->sta, tid, NULL);
}
void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid)
void ieee80211_start_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u16 tid)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
u8 *state;
@ -483,10 +470,11 @@ void ieee80211_start_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u16 tid)
}
EXPORT_SYMBOL(ieee80211_start_tx_ba_cb);
void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
void ieee80211_start_tx_ba_cb_irqsafe(struct ieee80211_vif *vif,
const u8 *ra, u16 tid)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
struct ieee80211_local *local = sdata->local;
struct ieee80211_ra_tid *ra_tid;
struct sk_buff *skb = dev_alloc_skb(0);
@ -535,13 +523,12 @@ int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
return ret;
}
int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw,
u8 *ra, u16 tid,
int ieee80211_stop_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
enum ieee80211_back_parties initiator)
{
struct ieee80211_local *local = hw_to_local(hw);
struct sta_info *sta;
int ret = 0;
struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct ieee80211_local *local = sdata->local;
if (WARN_ON(!local->ops->ampdu_action))
return -EINVAL;
@ -549,22 +536,14 @@ int ieee80211_stop_tx_ba_session(struct ieee80211_hw *hw,
if (tid >= STA_TID_NUM)
return -EINVAL;
rcu_read_lock();
sta = sta_info_get(local, ra);
if (!sta) {
rcu_read_unlock();
return -ENOENT;
}
ret = __ieee80211_stop_tx_ba_session(sta, tid, initiator);
rcu_read_unlock();
return ret;
return __ieee80211_stop_tx_ba_session(sta, tid, initiator);
}
EXPORT_SYMBOL(ieee80211_stop_tx_ba_session);
void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
void ieee80211_stop_tx_ba_cb(struct ieee80211_vif *vif, u8 *ra, u8 tid)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
struct ieee80211_local *local = sdata->local;
struct sta_info *sta;
u8 *state;
@ -627,10 +606,11 @@ void ieee80211_stop_tx_ba_cb(struct ieee80211_hw *hw, u8 *ra, u8 tid)
}
EXPORT_SYMBOL(ieee80211_stop_tx_ba_cb);
void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_hw *hw,
void ieee80211_stop_tx_ba_cb_irqsafe(struct ieee80211_vif *vif,
const u8 *ra, u16 tid)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
struct ieee80211_local *local = sdata->local;
struct ieee80211_ra_tid *ra_tid;
struct sk_buff *skb = dev_alloc_skb(0);

5
net/mac80211/driver-ops.h
View file

@ -239,15 +239,16 @@ static inline int drv_tx_last_beacon(struct ieee80211_local *local)
}
static inline int drv_ampdu_action(struct ieee80211_local *local,
struct ieee80211_vif *vif,
enum ieee80211_ampdu_mlme_action action,
struct ieee80211_sta *sta, u16 tid,
u16 *ssn)
{
int ret = -EOPNOTSUPP;
if (local->ops->ampdu_action)
ret = local->ops->ampdu_action(&local->hw, action,
ret = local->ops->ampdu_action(&local->hw, vif, action,
sta, tid, ssn);
trace_drv_ampdu_action(local, action, sta, tid, ssn, ret);
trace_drv_ampdu_action(local, vif, action, sta, tid, ssn, ret);
return ret;
}

9
net/mac80211/driver-trace.h
View file

@ -634,11 +634,12 @@ TRACE_EVENT(drv_tx_last_beacon,
TRACE_EVENT(drv_ampdu_action,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_vif *vif,
enum ieee80211_ampdu_mlme_action action,
struct ieee80211_sta *sta, u16 tid,
u16 *ssn, int ret),
TP_ARGS(local, action, sta, tid, ssn, ret),
TP_ARGS(local, vif, action, sta, tid, ssn, ret),
TP_STRUCT__entry(
LOCAL_ENTRY
@ -647,10 +648,12 @@ TRACE_EVENT(drv_ampdu_action,
__field(u16, tid)
__field(u16, ssn)
__field(int, ret)
VIF_ENTRY
),
TP_fast_assign(
LOCAL_ASSIGN;
VIF_ASSIGN;
STA_ASSIGN;
__entry->ret = ret;
__entry->action = action;
@ -659,8 +662,8 @@ TRACE_EVENT(drv_ampdu_action,
),
TP_printk(
LOCAL_PR_FMT STA_PR_FMT " action:%d tid:%d ret:%d",
LOCAL_PR_ARG, STA_PR_ARG, __entry->action, __entry->tid, __entry->ret
LOCAL_PR_FMT VIF_PR_FMT STA_PR_FMT " action:%d tid:%d ret:%d",
LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG, __entry->action, __entry->tid, __entry->ret
)
);
#endif /* !__MAC80211_DRIVER_TRACE || TRACE_HEADER_MULTI_READ */

3
net/mac80211/ht.c
View file

@ -141,7 +141,6 @@ void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta,
struct ieee80211_mgmt *mgmt, size_t len)
{
struct ieee80211_local *local = sdata->local;
u16 tid, params;
u16 initiator;
@ -164,7 +163,7 @@ void ieee80211_process_delba(struct ieee80211_sub_if_data *sdata,
sta->ampdu_mlme.tid_state_tx[tid] =
HT_AGG_STATE_OPERATIONAL;
spin_unlock_bh(&sta->lock);
ieee80211_stop_tx_ba_session(&local->hw, sta->sta.addr, tid,
ieee80211_stop_tx_ba_session(&sta->sta, tid,
WLAN_BACK_RECIPIENT);
}
}

3
net/mac80211/ieee80211_i.h
View file

@ -771,8 +771,9 @@ IEEE80211_DEV_TO_SUB_IF(struct net_device *dev)
return netdev_priv(dev);
}
/* this struct represents 802.11n's RA/TID combination */
/* this struct represents 802.11n's RA/TID combination along with our vif */
struct ieee80211_ra_tid {
struct ieee80211_vif *vif;
u8 ra[ETH_ALEN];
u16 tid;
};

8
net/mac80211/main.c
View file

@ -296,14 +296,14 @@ static void ieee80211_tasklet_handler(unsigned long data)
break;
case IEEE80211_DELBA_MSG:
ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
ieee80211_stop_tx_ba_cb(local_to_hw(local),
ra_tid->ra, ra_tid->tid);
ieee80211_stop_tx_ba_cb(ra_tid->vif, ra_tid->ra,
ra_tid->tid);
dev_kfree_skb(skb);
break;
case IEEE80211_ADDBA_MSG:
ra_tid = (struct ieee80211_ra_tid *) &skb->cb;
ieee80211_start_tx_ba_cb(local_to_hw(local),
ra_tid->ra, ra_tid->tid);
ieee80211_start_tx_ba_cb(ra_tid->vif, ra_tid->ra,
ra_tid->tid);
dev_kfree_skb(skb);
break ;
default: