The pull-push functionality of 10.4 will be based
on peer_id and tid. These will need to be mapped,
eventually, to ieee80211_txq to be used with
ieee80211_tx_dequeue().
Iterating over existing stations every time
peer_id needs to be mapped to a station would be
inefficient wrt CPU time.
The new firmware, which will be the only user of
the code flow-wise, will guarantee to use low
peer_ids first so despite peer_map's apparent huge
size d-cache thrashing should not be a problem.
Older firmware hot paths will effectively not use
peer_map.
Signed-off-by: Michal Kazior <michal.kazior@xxxxxxxxx>
---
drivers/net/wireless/ath/ath10k/core.h | 4 ++
drivers/net/wireless/ath/ath10k/mac.c | 71 +++++++++++++++++++++++++++++++---
drivers/net/wireless/ath/ath10k/txrx.c | 2 +
3 files changed, 71 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/ath/ath10k/core.h b/drivers/net/wireless/ath/ath10k/core.h
index 523585e85f35..5f447444fe97 100644
--- a/drivers/net/wireless/ath/ath10k/core.h
+++ b/drivers/net/wireless/ath/ath10k/core.h
@@ -297,6 +297,9 @@ struct ath10k_dfs_stats {
struct ath10k_peer {
struct list_head list;
+ struct ieee80211_vif *vif;
+ struct ieee80211_sta *sta;
+
int vdev_id;
u8 addr[ETH_ALEN];
DECLARE_BITMAP(peer_ids, ATH10K_MAX_NUM_PEER_IDS);
@@ -791,6 +794,7 @@ struct ath10k {
struct list_head arvifs;
struct list_head peers;
+ struct ath10k_peer *peer_map[ATH10K_MAX_NUM_PEER_IDS];
wait_queue_head_t peer_mapping_wq;
/* protected by conf_mutex */
diff --git a/drivers/net/wireless/ath/ath10k/mac.c b/drivers/net/wireless/ath/ath10k/mac.c
index 72b8f177445d..4b69a373382b 100644
--- a/drivers/net/wireless/ath/ath10k/mac.c
+++ b/drivers/net/wireless/ath/ath10k/mac.c
@@ -618,10 +618,15 @@ ath10k_mac_get_any_chandef_iter(struct ieee80211_hw *hw,
*def = &conf->def;
}
-static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr,
+static int ath10k_peer_create(struct ath10k *ar,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ u32 vdev_id,
+ const u8 *addr,
enum wmi_peer_type peer_type)
{
struct ath10k_vif *arvif;
+ struct ath10k_peer *peer;
int num_peers = 0;
int ret;
@@ -650,6 +655,22 @@ static int ath10k_peer_create(struct ath10k *ar, u32 vdev_id, const u8 *addr,
return ret;
}
+ spin_lock_bh(&ar->data_lock);
+
+ peer = ath10k_peer_find(ar, vdev_id, addr);
+ if (!peer) {
+ ath10k_warn(ar, "failed to find peer %pM on vdev %i after creation\n",
+ addr, vdev_id);
+ ath10k_wmi_peer_delete(ar, vdev_id, addr);
+ spin_unlock_bh(&ar->data_lock);
+ return -ENOENT;
+ }
+
+ peer->vif = vif;
+ peer->sta = sta;
+
+ spin_unlock_bh(&ar->data_lock);
+
ar->num_peers++;
return 0;
@@ -731,6 +752,7 @@ static int ath10k_peer_delete(struct ath10k *ar, u32 vdev_id, const u8 *addr)
static void ath10k_peer_cleanup(struct ath10k *ar, u32 vdev_id)
{
struct ath10k_peer *peer, *tmp;
+ int peer_id;
lockdep_assert_held(&ar->conf_mutex);
@@ -742,6 +764,11 @@ static void ath10k_peer_cleanup(struct ath10k *ar, u32 vdev_id)
ath10k_warn(ar, "removing stale peer %pM from vdev_id %d\n",
peer->addr, vdev_id);
+ for_each_set_bit(peer_id, peer->peer_ids,
+ ATH10K_MAX_NUM_PEER_IDS) {
+ ar->peer_map[peer_id] = NULL;
+ }
+
list_del(&peer->list);
kfree(peer);
ar->num_peers--;
@@ -3506,7 +3533,8 @@ void ath10k_offchan_tx_work(struct work_struct *work)
peer_addr, vdev_id);
if (!peer) {
- ret = ath10k_peer_create(ar, vdev_id, peer_addr,
+ ret = ath10k_peer_create(ar, NULL, NULL, vdev_id,
+ peer_addr,
WMI_PEER_TYPE_DEFAULT);
if (ret)
ath10k_warn(ar, "failed to create peer %pM on vdev %d: %d\n",
@@ -4614,8 +4642,8 @@ static int ath10k_add_interface(struct ieee80211_hw *hw,
if (arvif->vdev_type == WMI_VDEV_TYPE_AP ||
arvif->vdev_type == WMI_VDEV_TYPE_IBSS) {
- ret = ath10k_peer_create(ar, arvif->vdev_id, vif->addr,
- WMI_PEER_TYPE_DEFAULT);
+ ret = ath10k_peer_create(ar, vif, NULL, arvif->vdev_id,
+ vif->addr, WMI_PEER_TYPE_DEFAULT);
if (ret) {
ath10k_warn(ar, "failed to create vdev %i peer for AP/IBSS: %d\n",
arvif->vdev_id, ret);
@@ -4749,7 +4777,9 @@ static void ath10k_remove_interface(struct ieee80211_hw *hw,
{
struct ath10k *ar = hw->priv;
struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
+ struct ath10k_peer *peer;
int ret;
+ int i;
cancel_work_sync(&arvif->ap_csa_work);
cancel_delayed_work_sync(&arvif->connection_loss_work);
@@ -4803,6 +4833,20 @@ static void ath10k_remove_interface(struct ieee80211_hw *hw,
spin_unlock_bh(&ar->data_lock);
}
+ spin_lock_bh(&ar->data_lock);
+ for (i = 0; i < ARRAY_SIZE(ar->peer_map); i++) {
+ peer = ar->peer_map[i];
+ if (!peer)
+ continue;
+
+ if (peer->vif == vif) {
+ ath10k_warn(ar, "found vif peer %pM entry on vdev %i after it was supposedly removed\n",
+ vif->addr, arvif->vdev_id);
+ peer->vif = NULL;
+ }
+ }
+ spin_unlock_bh(&ar->data_lock);
+
ath10k_peer_cleanup(ar, arvif->vdev_id);
if (vif->type == NL80211_IFTYPE_MONITOR) {
@@ -5522,6 +5566,7 @@ static int ath10k_sta_state(struct ieee80211_hw *hw,
struct ath10k_sta *arsta = (struct ath10k_sta *)sta->drv_priv;
struct ath10k_peer *peer;
int ret = 0;
+ int i;
if (old_state == IEEE80211_STA_NOTEXIST &&
new_state == IEEE80211_STA_NONE) {
@@ -5562,8 +5607,8 @@ static int ath10k_sta_state(struct ieee80211_hw *hw,
if (sta->tdls)
peer_type = WMI_PEER_TYPE_TDLS;
- ret = ath10k_peer_create(ar, arvif->vdev_id, sta->addr,
- peer_type);
+ ret = ath10k_peer_create(ar, vif, sta, arvif->vdev_id,
+ sta->addr, peer_type);
if (ret) {
ath10k_warn(ar, "failed to add peer %pM for vdev %d when adding a new sta: %i\n",
sta->addr, arvif->vdev_id, ret);
@@ -5651,6 +5696,20 @@ static int ath10k_sta_state(struct ieee80211_hw *hw,
ath10k_mac_dec_num_stations(arvif, sta);
+ spin_lock_bh(&ar->data_lock);
+ for (i = 0; i < ARRAY_SIZE(ar->peer_map); i++) {
+ peer = ar->peer_map[i];
+ if (!peer)
+ continue;
+
+ if (peer->sta == sta) {
+ ath10k_warn(ar, "found sta peer %pM entry on vdev %i after it was supposedly removed\n",
+ sta->addr, arvif->vdev_id);
+ peer->sta = NULL;
+ }
+ }
+ spin_unlock_bh(&ar->data_lock);
+
if (!sta->tdls)
goto exit;
diff --git a/drivers/net/wireless/ath/ath10k/txrx.c b/drivers/net/wireless/ath/ath10k/txrx.c
index 118586ece20e..202e5192235b 100644
--- a/drivers/net/wireless/ath/ath10k/txrx.c
+++ b/drivers/net/wireless/ath/ath10k/txrx.c
@@ -203,6 +203,7 @@ void ath10k_peer_map_event(struct ath10k_htt *htt,
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt peer map vdev %d peer %pM id %d\n",
ev->vdev_id, ev->addr, ev->peer_id);
+ ar->peer_map[ev->peer_id] = peer;
set_bit(ev->peer_id, peer->peer_ids);
exit:
spin_unlock_bh(&ar->data_lock);
@@ -225,6 +226,7 @@ void ath10k_peer_unmap_event(struct ath10k_htt *htt,
ath10k_dbg(ar, ATH10K_DBG_HTT, "htt peer unmap vdev %d peer %pM id %d\n",
peer->vdev_id, peer->addr, ev->peer_id);
+ ar->peer_map[ev->peer_id] = NULL;
clear_bit(ev->peer_id, peer->peer_ids);
if (bitmap_empty(peer->peer_ids, ATH10K_MAX_NUM_PEER_IDS)) {
--
2.1.4
--
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