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ath6kl: Add unicast mgmt frame buffering

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PS buffering of unicast Action frames that are sent in a context
of a BSS. In AP mode when the recepient station goes to powersave
and PS_POLL flag is not set, we would buffer the frames. Send out
unicast mgmt bufferred frame when PS_POLL is received.

This fixes a bug in P2P GO behavior when sending a GO Discoverability
Request to a client that is in sleep mode.

kvalo: indentation fixes

Signed-off-by: Thirumalai Pachamuthu <tpachamu@qca.qualcomm.com>
Signed-off-by: Naveen Gangadharan <ngangadh@qca.qualcomm.com>
Signed-off-by: Aarthi Thiruvengadam <athiruve@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Naveen Gangadharan
2012-02-08 17:51:36 -08:00
committed by Kalle Valo
parent 3b96d49a79
commit d0ff7383a3
7 changed files with 188 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
drivers/net/wireless/ath/ath6kl/main.c
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@@ -81,11 +81,21 @@ static void ath6kl_add_new_sta(struct ath6kl_vif *vif, u8 *mac, u16 aid,
static void ath6kl_sta_cleanup(struct ath6kl *ar, u8 i)
{
struct ath6kl_sta *sta = &ar->sta_list[i];
struct ath6kl_mgmt_buff *entry, *tmp;
/* empty the queued pkts in the PS queue if any */
spin_lock_bh(&sta->psq_lock);
skb_queue_purge(&sta->psq);
skb_queue_purge(&sta->apsdq);
if (sta->mgmt_psq_len != 0) {
list_for_each_entry_safe(entry, tmp, &sta->mgmt_psq, list) {
kfree(entry);
}
INIT_LIST_HEAD(&sta->mgmt_psq);
sta->mgmt_psq_len = 0;
}
spin_unlock_bh(&sta->psq_lock);
memset(&ar->ap_stats.sta[sta->aid - 1], 0,
@@ -811,6 +821,7 @@ void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid)
struct sk_buff *skb;
bool psq_empty = false;
struct ath6kl *ar = vif->ar;
struct ath6kl_mgmt_buff *mgmt_buf;
conn = ath6kl_find_sta_by_aid(ar, aid);
@@ -821,7 +832,7 @@ void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid)
* becomes empty update the PVB for this station.
*/
spin_lock_bh(&conn->psq_lock);
psq_empty = skb_queue_empty(&conn->psq);
psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0);
spin_unlock_bh(&conn->psq_lock);
if (psq_empty)
@@ -829,15 +840,31 @@ void ath6kl_pspoll_event(struct ath6kl_vif *vif, u8 aid)
return;
spin_lock_bh(&conn->psq_lock);
skb = skb_dequeue(&conn->psq);
spin_unlock_bh(&conn->psq_lock);
if (conn->mgmt_psq_len > 0) {
mgmt_buf = list_first_entry(&conn->mgmt_psq,
struct ath6kl_mgmt_buff, list);
list_del(&mgmt_buf->list);
conn->mgmt_psq_len--;
spin_unlock_bh(&conn->psq_lock);
conn->sta_flags |= STA_PS_POLLED;
ath6kl_data_tx(skb, vif->ndev);
conn->sta_flags &= ~STA_PS_POLLED;
conn->sta_flags |= STA_PS_POLLED;
ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx,
mgmt_buf->id, mgmt_buf->freq,
mgmt_buf->wait, mgmt_buf->buf,
mgmt_buf->len, mgmt_buf->no_cck);
conn->sta_flags &= ~STA_PS_POLLED;
kfree(mgmt_buf);
} else {
skb = skb_dequeue(&conn->psq);
spin_unlock_bh(&conn->psq_lock);
conn->sta_flags |= STA_PS_POLLED;
ath6kl_data_tx(skb, vif->ndev);
conn->sta_flags &= ~STA_PS_POLLED;
}
spin_lock_bh(&conn->psq_lock);
psq_empty = skb_queue_empty(&conn->psq);
psq_empty = skb_queue_empty(&conn->psq) && (conn->mgmt_psq_len == 0);
spin_unlock_bh(&conn->psq_lock);
if (psq_empty)