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Subject[PATCH v3 08/18] wcn36xx: Remove sta pointer in private vif struct
Date
From: Pontus Fuchs <pontus.fuchs@gmail.com>

This does not work with multiple sta's in a vif.

Signed-off-by: Pontus Fuchs <pontus.fuchs@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
drivers/net/wireless/ath/wcn36xx/main.c | 3 ---
drivers/net/wireless/ath/wcn36xx/smd.c | 28 +++++++++++++++-------------
drivers/net/wireless/ath/wcn36xx/wcn36xx.h | 1 -
3 files changed, 15 insertions(+), 17 deletions(-)

diff --git a/drivers/net/wireless/ath/wcn36xx/main.c b/drivers/net/wireless/ath/wcn36xx/main.c
index a23738deb5b3..7c06ca9fdd2c 100644
--- a/drivers/net/wireless/ath/wcn36xx/main.c
+++ b/drivers/net/wireless/ath/wcn36xx/main.c
@@ -796,7 +796,6 @@ static int wcn36xx_sta_add(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
vif, sta->addr);

spin_lock_init(&sta_priv->ampdu_lock);
- vif_priv->sta = sta_priv;
sta_priv->vif = vif_priv;
/*
* For STA mode HW will be configured on BSS_CHANGED_ASSOC because
@@ -815,14 +814,12 @@ static int wcn36xx_sta_remove(struct ieee80211_hw *hw,
struct ieee80211_sta *sta)
{
struct wcn36xx *wcn = hw->priv;
- struct wcn36xx_vif *vif_priv = wcn36xx_vif_to_priv(vif);
struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);

wcn36xx_dbg(WCN36XX_DBG_MAC, "mac sta remove vif %p sta %pM index %d\n",
vif, sta->addr, sta_priv->sta_index);

wcn36xx_smd_delete_sta(wcn, sta_priv->sta_index);
- vif_priv->sta = NULL;
sta_priv->vif = NULL;
return 0;
}
diff --git a/drivers/net/wireless/ath/wcn36xx/smd.c b/drivers/net/wireless/ath/wcn36xx/smd.c
index ff56138528b6..76c6856ed932 100644
--- a/drivers/net/wireless/ath/wcn36xx/smd.c
+++ b/drivers/net/wireless/ath/wcn36xx/smd.c
@@ -1170,6 +1170,7 @@ static int wcn36xx_smd_config_bss_v1(struct wcn36xx *wcn,

static int wcn36xx_smd_config_bss_rsp(struct wcn36xx *wcn,
struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
void *buf,
size_t len)
{
@@ -1200,9 +1201,10 @@ static int wcn36xx_smd_config_bss_rsp(struct wcn36xx *wcn,

vif_priv->bss_index = params->bss_index;

- if (vif_priv->sta) {
- vif_priv->sta->bss_sta_index = params->bss_sta_index;
- vif_priv->sta->bss_dpu_desc_index = params->dpu_desc_index;
+ if (sta) {
+ struct wcn36xx_sta *sta_priv = wcn36xx_sta_to_priv(sta);
+ sta_priv->bss_sta_index = params->bss_sta_index;
+ sta_priv->bss_dpu_desc_index = params->dpu_desc_index;
}

vif_priv->self_ucast_dpu_sign = params->ucast_dpu_signature;
@@ -1329,6 +1331,7 @@ int wcn36xx_smd_config_bss(struct wcn36xx *wcn, struct ieee80211_vif *vif,
}
ret = wcn36xx_smd_config_bss_rsp(wcn,
vif,
+ sta,
wcn->hal_buf,
wcn->hal_rsp_len);
if (ret) {
@@ -2058,25 +2061,24 @@ static int wcn36xx_smd_delete_sta_context_ind(struct wcn36xx *wcn,
{
struct wcn36xx_hal_delete_sta_context_ind_msg *rsp = buf;
struct wcn36xx_vif *tmp;
- struct ieee80211_sta *sta = NULL;
+ struct ieee80211_sta *sta;

if (len != sizeof(*rsp)) {
wcn36xx_warn("Corrupted delete sta indication\n");
return -EIO;
}

+ wcn36xx_dbg(WCN36XX_DBG_HAL, "delete station indication %pM index %d\n",
+ rsp->addr2, rsp->sta_id);
+
list_for_each_entry(tmp, &wcn->vif_list, list) {
- if (sta && (tmp->sta->sta_index == rsp->sta_id)) {
- sta = container_of((void *)tmp->sta,
- struct ieee80211_sta,
- drv_priv);
- wcn36xx_dbg(WCN36XX_DBG_HAL,
- "delete station indication %pM index %d\n",
- rsp->addr2,
- rsp->sta_id);
+ rcu_read_lock();
+ sta = ieee80211_find_sta(wcn36xx_priv_to_vif(tmp), rsp->addr2);
+ if (sta)
ieee80211_report_low_ack(sta, 0);
+ rcu_read_unlock();
+ if (sta)
return 0;
- }
}

wcn36xx_warn("STA with addr %pM and index %d not found\n",
diff --git a/drivers/net/wireless/ath/wcn36xx/wcn36xx.h b/drivers/net/wireless/ath/wcn36xx/wcn36xx.h
index c368a34c8de7..54000db0af1a 100644
--- a/drivers/net/wireless/ath/wcn36xx/wcn36xx.h
+++ b/drivers/net/wireless/ath/wcn36xx/wcn36xx.h
@@ -125,7 +125,6 @@ struct wcn36xx_platform_ctrl_ops {
*/
struct wcn36xx_vif {
struct list_head list;
- struct wcn36xx_sta *sta;
u8 dtim_period;
enum ani_ed_type encrypt_type;
bool is_joining;
--
2.5.0
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