Thanks to "mac80211: allow configure_filter callback to sleep",
we no longer have to defer the work to the workqueue.
Signed-off-by: Christian Lamparter <[email protected]>
---
please test!
---
diff --git a/drivers/net/wireless/ath/ar9170/ar9170.h b/drivers/net/wireless/ath/ar9170/ar9170.h
index e6c3ee3..9c4d43c 100644
--- a/drivers/net/wireless/ath/ar9170/ar9170.h
+++ b/drivers/net/wireless/ath/ar9170/ar9170.h
@@ -184,10 +184,8 @@ struct ar9170 {
bool disable_offload;
/* filter settings */
- struct work_struct filter_config_work;
- u64 cur_mc_hash, want_mc_hash;
- u32 cur_filter, want_filter;
- unsigned long filter_changed;
+ u64 cur_mc_hash;
+ u32 cur_filter;
unsigned int filter_state;
bool sniffer_enabled;
@@ -261,10 +259,6 @@ struct ar9170_tx_info {
#define IS_STARTED(a) (((struct ar9170 *)a)->state >= AR9170_STARTED)
#define IS_ACCEPTING_CMD(a) (((struct ar9170 *)a)->state >= AR9170_IDLE)
-#define AR9170_FILTER_CHANGED_MODE BIT(0)
-#define AR9170_FILTER_CHANGED_MULTICAST BIT(1)
-#define AR9170_FILTER_CHANGED_FRAMEFILTER BIT(2)
-
/* exported interface */
void *ar9170_alloc(size_t priv_size);
int ar9170_register(struct ar9170 *ar, struct device *pdev);
@@ -278,8 +272,8 @@ int ar9170_nag_limiter(struct ar9170 *ar);
int ar9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
int ar9170_init_mac(struct ar9170 *ar);
int ar9170_set_qos(struct ar9170 *ar);
-int ar9170_update_multicast(struct ar9170 *ar);
-int ar9170_update_frame_filter(struct ar9170 *ar);
+int ar9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
+int ar9170_update_frame_filter(struct ar9170 *ar, const u32 filter);
int ar9170_set_operating_mode(struct ar9170 *ar);
int ar9170_set_beacon_timers(struct ar9170 *ar);
int ar9170_set_dyn_sifs_ack(struct ar9170 *ar);
diff --git a/drivers/net/wireless/ath/ar9170/mac.c b/drivers/net/wireless/ath/ar9170/mac.c
index d9f1f46..6004936 100644
--- a/drivers/net/wireless/ath/ar9170/mac.c
+++ b/drivers/net/wireless/ath/ar9170/mac.c
@@ -238,39 +238,31 @@ static int ar9170_set_mac_reg(struct ar9170 *ar, const u32 reg, const u8 *mac)
return ar9170_regwrite_result();
}
-int ar9170_update_multicast(struct ar9170 *ar)
+int ar9170_update_multicast(struct ar9170 *ar, const u64 mc_hash)
{
int err;
ar9170_regwrite_begin(ar);
- ar9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_H,
- ar->want_mc_hash >> 32);
- ar9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_L,
- ar->want_mc_hash);
-
+ ar9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_H, mc_hash >> 32);
+ ar9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_L, mc_hash);
ar9170_regwrite_finish();
err = ar9170_regwrite_result();
-
if (err)
return err;
- ar->cur_mc_hash = ar->want_mc_hash;
-
+ ar->cur_mc_hash = mc_hash;
return 0;
}
-int ar9170_update_frame_filter(struct ar9170 *ar)
+int ar9170_update_frame_filter(struct ar9170 *ar, const u32 filter)
{
int err;
- err = ar9170_write_reg(ar, AR9170_MAC_REG_FRAMETYPE_FILTER,
- ar->want_filter);
-
+ err = ar9170_write_reg(ar, AR9170_MAC_REG_FRAMETYPE_FILTER, filter);
if (err)
return err;
- ar->cur_filter = ar->want_filter;
-
+ ar->cur_filter = filter;
return 0;
}
diff --git a/drivers/net/wireless/ath/ar9170/main.c b/drivers/net/wireless/ath/ar9170/main.c
index 6a9462e..0d91f43 100644
--- a/drivers/net/wireless/ath/ar9170/main.c
+++ b/drivers/net/wireless/ath/ar9170/main.c
@@ -1232,8 +1232,6 @@ static int ar9170_op_start(struct ieee80211_hw *hw)
mutex_lock(&ar->mutex);
- ar->filter_changed = 0;
-
/* reinitialize queues statistics */
memset(&ar->tx_stats, 0, sizeof(ar->tx_stats));
for (i = 0; i < __AR9170_NUM_TXQ; i++)
@@ -1296,7 +1294,6 @@ static void ar9170_op_stop(struct ieee80211_hw *hw)
#ifdef CONFIG_AR9170_LEDS
cancel_delayed_work_sync(&ar->led_work);
#endif
- cancel_work_sync(&ar->filter_config_work);
cancel_work_sync(&ar->beacon_work);
mutex_lock(&ar->mutex);
@@ -1973,8 +1970,7 @@ static int ar9170_op_add_interface(struct ieee80211_hw *hw,
}
ar->cur_filter = 0;
- ar->want_filter = AR9170_MAC_REG_FTF_DEFAULTS;
- err = ar9170_update_frame_filter(ar);
+ err = ar9170_update_frame_filter(ar, AR9170_MAC_REG_FTF_DEFAULTS);
if (err)
goto unlock;
@@ -1992,8 +1988,7 @@ static void ar9170_op_remove_interface(struct ieee80211_hw *hw,
mutex_lock(&ar->mutex);
ar->vif = NULL;
- ar->want_filter = 0;
- ar9170_update_frame_filter(ar);
+ ar9170_update_frame_filter(ar, 0);
ar9170_set_beacon_timers(ar);
dev_kfree_skb(ar->beacon);
ar->beacon = NULL;
@@ -2065,41 +2060,6 @@ out:
return err;
}
-static void ar9170_set_filters(struct work_struct *work)
-{
- struct ar9170 *ar = container_of(work, struct ar9170,
- filter_config_work);
- int err;
-
- if (unlikely(!IS_STARTED(ar)))
- return ;
-
- mutex_lock(&ar->mutex);
- if (test_and_clear_bit(AR9170_FILTER_CHANGED_MODE,
- &ar->filter_changed)) {
- err = ar9170_set_operating_mode(ar);
- if (err)
- goto unlock;
- }
-
- if (test_and_clear_bit(AR9170_FILTER_CHANGED_MULTICAST,
- &ar->filter_changed)) {
- err = ar9170_update_multicast(ar);
- if (err)
- goto unlock;
- }
-
- if (test_and_clear_bit(AR9170_FILTER_CHANGED_FRAMEFILTER,
- &ar->filter_changed)) {
- err = ar9170_update_frame_filter(ar);
- if (err)
- goto unlock;
- }
-
-unlock:
- mutex_unlock(&ar->mutex);
-}
-
static u64 ar9170_op_prepare_multicast(struct ieee80211_hw *hw, int mc_count,
struct dev_addr_list *mclist)
{
@@ -2126,6 +2086,11 @@ static void ar9170_op_configure_filter(struct ieee80211_hw *hw,
{
struct ar9170 *ar = hw->priv;
+ if (unlikely(!IS_STARTED(ar)))
+ return ;
+
+ mutex_lock(&ar->mutex);
+
/* mask supported flags */
*new_flags &= FIF_ALLMULTI | FIF_CONTROL | FIF_BCN_PRBRESP_PROMISC |
FIF_PROMISC_IN_BSS | FIF_FCSFAIL | FIF_PLCPFAIL;
@@ -2136,12 +2101,10 @@ static void ar9170_op_configure_filter(struct ieee80211_hw *hw,
*/
if (changed_flags & FIF_ALLMULTI && *new_flags & FIF_ALLMULTI)
- multicast = ~0ULL;
+ multicast = ~0ULL;
- if (multicast != ar->want_mc_hash) {
- ar->want_mc_hash = multicast;
- set_bit(AR9170_FILTER_CHANGED_MULTICAST, &ar->filter_changed);
- }
+ if (multicast != ar->cur_mc_hash)
+ ar9170_update_multicast(ar, multicast);
if (changed_flags & FIF_CONTROL) {
u32 filter = AR9170_MAC_REG_FTF_PSPOLL |
@@ -2152,24 +2115,21 @@ static void ar9170_op_configure_filter(struct ieee80211_hw *hw,
AR9170_MAC_REG_FTF_CFE_ACK;
if (*new_flags & FIF_CONTROL)
- ar->want_filter = ar->cur_filter | filter;
+ filter |= ar->cur_filter;
else
- ar->want_filter = ar->cur_filter & ~filter;
+ filter &= (~ar->cur_filter);
- set_bit(AR9170_FILTER_CHANGED_FRAMEFILTER,
- &ar->filter_changed);
+ ar9170_update_frame_filter(ar, filter);
}
if (changed_flags & FIF_PROMISC_IN_BSS) {
ar->sniffer_enabled = ((*new_flags) & FIF_PROMISC_IN_BSS) != 0;
- set_bit(AR9170_FILTER_CHANGED_MODE,
- &ar->filter_changed);
+ ar9170_set_operating_mode(ar);
}
- if (likely(IS_STARTED(ar)))
- ieee80211_queue_work(ar->hw, &ar->filter_config_work);
+ mutex_unlock(&ar->mutex);
}
static void ar9170_op_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
@@ -2423,9 +2384,6 @@ static void ar9170_sta_notify(struct ieee80211_hw *hw,
default:
break;
}
-
- if (IS_STARTED(ar) && ar->filter_changed)
- ieee80211_queue_work(ar->hw, &ar->filter_config_work);
}
static int ar9170_get_stats(struct ieee80211_hw *hw,
@@ -2596,7 +2554,6 @@ void *ar9170_alloc(size_t priv_size)
skb_queue_head_init(&ar->tx_pending[i]);
}
ar9170_rx_reset_rx_mpdu(ar);
- INIT_WORK(&ar->filter_config_work, ar9170_set_filters);
INIT_WORK(&ar->beacon_work, ar9170_new_beacon);
INIT_DELAYED_WORK(&ar->tx_janitor, ar9170_tx_janitor);
INIT_LIST_HEAD(&ar->tx_ampdu_list);
Thanks to "mac80211: allow configure_filter callback to sleep",
we no longer have to defer the work to the workqueue.
Signed-off-by: Christian Lamparter <[email protected]>
---
please test!
changes to v1:
- re-based
- fixed possible WARN_ON in ieee80211_configure_filter
on module unload
---
diff --git a/drivers/net/wireless/ath/ar9170/ar9170.h b/drivers/net/wireless/ath/ar9170/ar9170.h
index 95f8256..ce40724 100644
--- a/drivers/net/wireless/ath/ar9170/ar9170.h
+++ b/drivers/net/wireless/ath/ar9170/ar9170.h
@@ -185,10 +185,8 @@ struct ar9170 {
bool disable_offload;
/* filter settings */
- struct work_struct filter_config_work;
- u64 cur_mc_hash, want_mc_hash;
- u32 cur_filter, want_filter;
- unsigned long filter_changed;
+ u64 cur_mc_hash;
+ u32 cur_filter;
unsigned int filter_state;
bool sniffer_enabled;
@@ -261,10 +259,6 @@ struct ar9170_tx_info {
#define IS_STARTED(a) (((struct ar9170 *)a)->state >= AR9170_STARTED)
#define IS_ACCEPTING_CMD(a) (((struct ar9170 *)a)->state >= AR9170_IDLE)
-#define AR9170_FILTER_CHANGED_MODE BIT(0)
-#define AR9170_FILTER_CHANGED_MULTICAST BIT(1)
-#define AR9170_FILTER_CHANGED_FRAMEFILTER BIT(2)
-
/* exported interface */
void *ar9170_alloc(size_t priv_size);
int ar9170_register(struct ar9170 *ar, struct device *pdev);
@@ -278,8 +272,8 @@ int ar9170_nag_limiter(struct ar9170 *ar);
int ar9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb);
int ar9170_init_mac(struct ar9170 *ar);
int ar9170_set_qos(struct ar9170 *ar);
-int ar9170_update_multicast(struct ar9170 *ar);
-int ar9170_update_frame_filter(struct ar9170 *ar);
+int ar9170_update_multicast(struct ar9170 *ar, const u64 mc_hast);
+int ar9170_update_frame_filter(struct ar9170 *ar, const u32 filter);
int ar9170_set_operating_mode(struct ar9170 *ar);
int ar9170_set_beacon_timers(struct ar9170 *ar);
int ar9170_set_dyn_sifs_ack(struct ar9170 *ar);
diff --git a/drivers/net/wireless/ath/ar9170/mac.c b/drivers/net/wireless/ath/ar9170/mac.c
index d9f1f46..6004936 100644
--- a/drivers/net/wireless/ath/ar9170/mac.c
+++ b/drivers/net/wireless/ath/ar9170/mac.c
@@ -238,39 +238,31 @@ static int ar9170_set_mac_reg(struct ar9170 *ar, const u32 reg, const u8 *mac)
return ar9170_regwrite_result();
}
-int ar9170_update_multicast(struct ar9170 *ar)
+int ar9170_update_multicast(struct ar9170 *ar, const u64 mc_hash)
{
int err;
ar9170_regwrite_begin(ar);
- ar9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_H,
- ar->want_mc_hash >> 32);
- ar9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_L,
- ar->want_mc_hash);
-
+ ar9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_H, mc_hash >> 32);
+ ar9170_regwrite(AR9170_MAC_REG_GROUP_HASH_TBL_L, mc_hash);
ar9170_regwrite_finish();
err = ar9170_regwrite_result();
-
if (err)
return err;
- ar->cur_mc_hash = ar->want_mc_hash;
-
+ ar->cur_mc_hash = mc_hash;
return 0;
}
-int ar9170_update_frame_filter(struct ar9170 *ar)
+int ar9170_update_frame_filter(struct ar9170 *ar, const u32 filter)
{
int err;
- err = ar9170_write_reg(ar, AR9170_MAC_REG_FRAMETYPE_FILTER,
- ar->want_filter);
-
+ err = ar9170_write_reg(ar, AR9170_MAC_REG_FRAMETYPE_FILTER, filter);
if (err)
return err;
- ar->cur_filter = ar->want_filter;
-
+ ar->cur_filter = filter;
return 0;
}
diff --git a/drivers/net/wireless/ath/ar9170/main.c b/drivers/net/wireless/ath/ar9170/main.c
index d30f33d..658b323 100644
--- a/drivers/net/wireless/ath/ar9170/main.c
+++ b/drivers/net/wireless/ath/ar9170/main.c
@@ -1232,8 +1232,6 @@ static int ar9170_op_start(struct ieee80211_hw *hw)
mutex_lock(&ar->mutex);
- ar->filter_changed = 0;
-
/* reinitialize queues statistics */
memset(&ar->tx_stats, 0, sizeof(ar->tx_stats));
for (i = 0; i < __AR9170_NUM_TXQ; i++)
@@ -1296,7 +1294,6 @@ static void ar9170_op_stop(struct ieee80211_hw *hw)
#ifdef CONFIG_AR9170_LEDS
cancel_delayed_work_sync(&ar->led_work);
#endif
- cancel_work_sync(&ar->filter_config_work);
cancel_work_sync(&ar->beacon_work);
mutex_lock(&ar->mutex);
@@ -1973,8 +1970,7 @@ static int ar9170_op_add_interface(struct ieee80211_hw *hw,
}
ar->cur_filter = 0;
- ar->want_filter = AR9170_MAC_REG_FTF_DEFAULTS;
- err = ar9170_update_frame_filter(ar);
+ err = ar9170_update_frame_filter(ar, AR9170_MAC_REG_FTF_DEFAULTS);
if (err)
goto unlock;
@@ -1992,8 +1988,7 @@ static void ar9170_op_remove_interface(struct ieee80211_hw *hw,
mutex_lock(&ar->mutex);
ar->vif = NULL;
- ar->want_filter = 0;
- ar9170_update_frame_filter(ar);
+ ar9170_update_frame_filter(ar, 0);
ar9170_set_beacon_timers(ar);
dev_kfree_skb(ar->beacon);
ar->beacon = NULL;
@@ -2065,41 +2060,6 @@ out:
return err;
}
-static void ar9170_set_filters(struct work_struct *work)
-{
- struct ar9170 *ar = container_of(work, struct ar9170,
- filter_config_work);
- int err;
-
- if (unlikely(!IS_STARTED(ar)))
- return ;
-
- mutex_lock(&ar->mutex);
- if (test_and_clear_bit(AR9170_FILTER_CHANGED_MODE,
- &ar->filter_changed)) {
- err = ar9170_set_operating_mode(ar);
- if (err)
- goto unlock;
- }
-
- if (test_and_clear_bit(AR9170_FILTER_CHANGED_MULTICAST,
- &ar->filter_changed)) {
- err = ar9170_update_multicast(ar);
- if (err)
- goto unlock;
- }
-
- if (test_and_clear_bit(AR9170_FILTER_CHANGED_FRAMEFILTER,
- &ar->filter_changed)) {
- err = ar9170_update_frame_filter(ar);
- if (err)
- goto unlock;
- }
-
-unlock:
- mutex_unlock(&ar->mutex);
-}
-
static u64 ar9170_op_prepare_multicast(struct ieee80211_hw *hw, int mc_count,
struct dev_addr_list *mclist)
{
@@ -2126,6 +2086,11 @@ static void ar9170_op_configure_filter(struct ieee80211_hw *hw,
{
struct ar9170 *ar = hw->priv;
+ if (unlikely(!IS_ACCEPTING_CMD(ar)))
+ return ;
+
+ mutex_lock(&ar->mutex);
+
/* mask supported flags */
*new_flags &= FIF_ALLMULTI | FIF_CONTROL | FIF_BCN_PRBRESP_PROMISC |
FIF_PROMISC_IN_BSS | FIF_FCSFAIL | FIF_PLCPFAIL;
@@ -2136,12 +2101,10 @@ static void ar9170_op_configure_filter(struct ieee80211_hw *hw,
*/
if (changed_flags & FIF_ALLMULTI && *new_flags & FIF_ALLMULTI)
- multicast = ~0ULL;
+ multicast = ~0ULL;
- if (multicast != ar->want_mc_hash) {
- ar->want_mc_hash = multicast;
- set_bit(AR9170_FILTER_CHANGED_MULTICAST, &ar->filter_changed);
- }
+ if (multicast != ar->cur_mc_hash)
+ ar9170_update_multicast(ar, multicast);
if (changed_flags & FIF_CONTROL) {
u32 filter = AR9170_MAC_REG_FTF_PSPOLL |
@@ -2152,24 +2115,22 @@ static void ar9170_op_configure_filter(struct ieee80211_hw *hw,
AR9170_MAC_REG_FTF_CFE_ACK;
if (*new_flags & FIF_CONTROL)
- ar->want_filter = ar->cur_filter | filter;
+ filter |= ar->cur_filter;
else
- ar->want_filter = ar->cur_filter & ~filter;
+ filter &= (~ar->cur_filter);
- set_bit(AR9170_FILTER_CHANGED_FRAMEFILTER,
- &ar->filter_changed);
+ ar9170_update_frame_filter(ar, filter);
}
if (changed_flags & FIF_PROMISC_IN_BSS) {
ar->sniffer_enabled = ((*new_flags) & FIF_PROMISC_IN_BSS) != 0;
- set_bit(AR9170_FILTER_CHANGED_MODE,
- &ar->filter_changed);
+ ar9170_set_operating_mode(ar);
}
- if (likely(IS_STARTED(ar)))
- ieee80211_queue_work(ar->hw, &ar->filter_config_work);
+ mutex_unlock(&ar->mutex);
}
+
static void ar9170_op_bss_info_changed(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf,
@@ -2423,9 +2384,6 @@ static void ar9170_sta_notify(struct ieee80211_hw *hw,
default:
break;
}
-
- if (IS_STARTED(ar) && ar->filter_changed)
- ieee80211_queue_work(ar->hw, &ar->filter_config_work);
}
static int ar9170_get_stats(struct ieee80211_hw *hw,
@@ -2596,7 +2554,6 @@ void *ar9170_alloc(size_t priv_size)
skb_queue_head_init(&ar->tx_pending[i]);
}
ar9170_rx_reset_rx_mpdu(ar);
- INIT_WORK(&ar->filter_config_work, ar9170_set_filters);
INIT_WORK(&ar->beacon_work, ar9170_new_beacon);
INIT_DELAYED_WORK(&ar->tx_janitor, ar9170_tx_janitor);
INIT_LIST_HEAD(&ar->tx_ampdu_list);