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authorArik Nemtsov <arik@wizery.com>2011-04-26 23:21:51 +0300
committerJohn W. Linville <linville@tuxdriver.com>2011-04-28 14:50:45 -0400
commit47684808fd89d6809c0886e06f8ac324252499d8 (patch)
treef5edf3dae33bc46a39d8526484bae71f33a19bab /drivers/net
parenta039a993496d79d09ae9709c82b545b9800954c9 (diff)
wl12xx: support FW TX inactivity triggers
In AP mode we register for the MAX_TX_RETRY and INACTIVE_STA events. Both are reported to the upper layers as a TX failure in the offending stations. In STA mode we register only for the MAX_TX_RETRY event. A TX failure is interpreted as a loss of connection. Support for IEEE80211_HW_REPORTS_TX_ACK_STATUS has been removed to avoid the inherent race condition of a mac80211 TX failure counter in addition to the FW counter. This patch depends on "mac80211: allow low level driver to report packet loss" Signed-off-by: Arik Nemtsov <arik@wizery.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/wireless/wl12xx/acx.c34
-rw-r--r--drivers/net/wireless/wl12xx/acx.h12
-rw-r--r--drivers/net/wireless/wl12xx/boot.c6
-rw-r--r--drivers/net/wireless/wl12xx/cmd.c2
-rw-r--r--drivers/net/wireless/wl12xx/conf.h12
-rw-r--r--drivers/net/wireless/wl12xx/event.c47
-rw-r--r--drivers/net/wireless/wl12xx/event.h12
-rw-r--r--drivers/net/wireless/wl12xx/init.c6
-rw-r--r--drivers/net/wireless/wl12xx/main.c10
-rw-r--r--drivers/net/wireless/wl12xx/wl12xx.h1
10 files changed, 125 insertions, 17 deletions
diff --git a/drivers/net/wireless/wl12xx/acx.c b/drivers/net/wireless/wl12xx/acx.c
index b277947400b5..a5c9c0aff83f 100644
--- a/drivers/net/wireless/wl12xx/acx.c
+++ b/drivers/net/wireless/wl12xx/acx.c
@@ -1524,22 +1524,46 @@ out:
return ret;
}
-int wl1271_acx_max_tx_retry(struct wl1271 *wl)
+int wl1271_acx_ap_max_tx_retry(struct wl1271 *wl)
{
- struct wl1271_acx_max_tx_retry *acx = NULL;
+ struct wl1271_acx_ap_max_tx_retry *acx = NULL;
int ret;
- wl1271_debug(DEBUG_ACX, "acx max tx retry");
+ wl1271_debug(DEBUG_ACX, "acx ap max tx retry");
acx = kzalloc(sizeof(*acx), GFP_KERNEL);
if (!acx)
return -ENOMEM;
- acx->max_tx_retry = cpu_to_le16(wl->conf.tx.ap_max_tx_retries);
+ acx->max_tx_retry = cpu_to_le16(wl->conf.tx.max_tx_retries);
ret = wl1271_cmd_configure(wl, ACX_MAX_TX_FAILURE, acx, sizeof(*acx));
if (ret < 0) {
- wl1271_warning("acx max tx retry failed: %d", ret);
+ wl1271_warning("acx ap max tx retry failed: %d", ret);
+ goto out;
+ }
+
+out:
+ kfree(acx);
+ return ret;
+}
+
+int wl1271_acx_sta_max_tx_retry(struct wl1271 *wl)
+{
+ struct wl1271_acx_sta_max_tx_retry *acx = NULL;
+ int ret;
+
+ wl1271_debug(DEBUG_ACX, "acx sta max tx retry");
+
+ acx = kzalloc(sizeof(*acx), GFP_KERNEL);
+ if (!acx)
+ return -ENOMEM;
+
+ acx->max_tx_retry = wl->conf.tx.max_tx_retries;
+
+ ret = wl1271_cmd_configure(wl, ACX_CONS_TX_FAILURE, acx, sizeof(*acx));
+ if (ret < 0) {
+ wl1271_warning("acx sta max tx retry failed: %d", ret);
goto out;
}
diff --git a/drivers/net/wireless/wl12xx/acx.h b/drivers/net/wireless/wl12xx/acx.h
index 0a40caeab2a2..942908cd53a3 100644
--- a/drivers/net/wireless/wl12xx/acx.h
+++ b/drivers/net/wireless/wl12xx/acx.h
@@ -1145,7 +1145,7 @@ struct wl1271_acx_fw_tsf_information {
u8 padding[3];
} __packed;
-struct wl1271_acx_max_tx_retry {
+struct wl1271_acx_ap_max_tx_retry {
struct acx_header header;
/*
@@ -1156,6 +1156,13 @@ struct wl1271_acx_max_tx_retry {
u8 padding_1[2];
} __packed;
+struct wl1271_acx_sta_max_tx_retry {
+ struct acx_header header;
+
+ u8 max_tx_retry;
+ u8 padding_1[3];
+} __packed;
+
struct wl1271_acx_config_ps {
struct acx_header header;
@@ -1307,7 +1314,8 @@ int wl1271_acx_set_ba_session(struct wl1271 *wl,
int wl1271_acx_set_ba_receiver_session(struct wl1271 *wl, u8 tid_index, u16 ssn,
bool enable);
int wl1271_acx_tsf_info(struct wl1271 *wl, u64 *mactime);
-int wl1271_acx_max_tx_retry(struct wl1271 *wl);
+int wl1271_acx_ap_max_tx_retry(struct wl1271 *wl);
+int wl1271_acx_sta_max_tx_retry(struct wl1271 *wl);
int wl1271_acx_config_ps(struct wl1271 *wl);
int wl1271_acx_set_inconnection_sta(struct wl1271 *wl, u8 *addr);
diff --git a/drivers/net/wireless/wl12xx/boot.c b/drivers/net/wireless/wl12xx/boot.c
index 2b0cf85788b3..d263ebb6f974 100644
--- a/drivers/net/wireless/wl12xx/boot.c
+++ b/drivers/net/wireless/wl12xx/boot.c
@@ -478,10 +478,12 @@ static int wl1271_boot_run_firmware(struct wl1271 *wl)
DISCONNECT_EVENT_COMPLETE_ID |
RSSI_SNR_TRIGGER_0_EVENT_ID |
PSPOLL_DELIVERY_FAILURE_EVENT_ID |
- SOFT_GEMINI_SENSE_EVENT_ID;
+ SOFT_GEMINI_SENSE_EVENT_ID |
+ MAX_TX_RETRY_EVENT_ID;
if (wl->bss_type == BSS_TYPE_AP_BSS)
- wl->event_mask |= STA_REMOVE_COMPLETE_EVENT_ID;
+ wl->event_mask |= STA_REMOVE_COMPLETE_EVENT_ID |
+ INACTIVE_STA_EVENT_ID;
else
wl->event_mask |= DUMMY_PACKET_EVENT_ID;
diff --git a/drivers/net/wireless/wl12xx/cmd.c b/drivers/net/wireless/wl12xx/cmd.c
index 246804428517..d48331682e7e 100644
--- a/drivers/net/wireless/wl12xx/cmd.c
+++ b/drivers/net/wireless/wl12xx/cmd.c
@@ -1070,7 +1070,7 @@ int wl1271_cmd_start_bss(struct wl1271 *wl)
memcpy(cmd->bssid, bss_conf->bssid, ETH_ALEN);
- cmd->aging_period = cpu_to_le16(WL1271_AP_DEF_INACTIV_SEC);
+ cmd->aging_period = cpu_to_le16(wl->conf.tx.ap_aging_period);
cmd->bss_index = WL1271_AP_BSS_INDEX;
cmd->global_hlid = WL1271_AP_GLOBAL_HLID;
cmd->broadcast_hlid = WL1271_AP_BROADCAST_HLID;
diff --git a/drivers/net/wireless/wl12xx/conf.h b/drivers/net/wireless/wl12xx/conf.h
index 6c9e3a673e6c..d16094f2604f 100644
--- a/drivers/net/wireless/wl12xx/conf.h
+++ b/drivers/net/wireless/wl12xx/conf.h
@@ -683,10 +683,18 @@ struct conf_tx_settings {
struct conf_tx_rate_class ap_bcst_conf;
/*
- * AP-mode - allow this number of TX retries to a station before an
+ * Allow this number of TX retries to a connected station/AP before an
* event is triggered from FW.
+ * In AP-mode the hlids of unreachable stations are given in the
+ * "sta_tx_retry_exceeded" member in the event mailbox.
*/
- u16 ap_max_tx_retries;
+ u8 max_tx_retries;
+
+ /*
+ * AP-mode - after this number of seconds a connected station is
+ * considered inactive.
+ */
+ u16 ap_aging_period;
/*
* Configuration for TID parameters.
diff --git a/drivers/net/wireless/wl12xx/event.c b/drivers/net/wireless/wl12xx/event.c
index ae69330e807c..d7be3aec6fc3 100644
--- a/drivers/net/wireless/wl12xx/event.c
+++ b/drivers/net/wireless/wl12xx/event.c
@@ -174,6 +174,8 @@ static int wl1271_event_process(struct wl1271 *wl, struct event_mailbox *mbox)
u32 vector;
bool beacon_loss = false;
bool is_ap = (wl->bss_type == BSS_TYPE_AP_BSS);
+ bool disconnect_sta = false;
+ unsigned long sta_bitmap = 0;
wl1271_event_mbox_dump(mbox);
@@ -235,9 +237,54 @@ static int wl1271_event_process(struct wl1271 *wl, struct event_mailbox *mbox)
wl1271_tx_dummy_packet(wl);
}
+ /*
+ * "TX retries exceeded" has a different meaning according to mode.
+ * In AP mode the offending station is disconnected. In STA mode we
+ * report connection loss.
+ */
+ if (vector & MAX_TX_RETRY_EVENT_ID) {
+ wl1271_debug(DEBUG_EVENT, "MAX_TX_RETRY_EVENT_ID");
+ if (is_ap) {
+ sta_bitmap |= le16_to_cpu(mbox->sta_tx_retry_exceeded);
+ disconnect_sta = true;
+ } else {
+ beacon_loss = true;
+ }
+ }
+
+ if ((vector & INACTIVE_STA_EVENT_ID) && is_ap) {
+ wl1271_debug(DEBUG_EVENT, "INACTIVE_STA_EVENT_ID");
+ sta_bitmap |= le16_to_cpu(mbox->sta_aging_status);
+ disconnect_sta = true;
+ }
+
if (wl->vif && beacon_loss)
ieee80211_connection_loss(wl->vif);
+ if (is_ap && disconnect_sta) {
+ u32 num_packets = wl->conf.tx.max_tx_retries;
+ struct ieee80211_sta *sta;
+ const u8 *addr;
+ int h;
+
+ for (h = find_first_bit(&sta_bitmap, AP_MAX_LINKS);
+ h < AP_MAX_LINKS;
+ h = find_next_bit(&sta_bitmap, AP_MAX_LINKS, h+1)) {
+ if (!wl1271_is_active_sta(wl, h))
+ continue;
+
+ addr = wl->links[h].addr;
+
+ rcu_read_lock();
+ sta = ieee80211_find_sta(wl->vif, addr);
+ if (sta) {
+ wl1271_debug(DEBUG_EVENT, "remove sta %d", h);
+ ieee80211_report_low_ack(sta, num_packets);
+ }
+ rcu_read_unlock();
+ }
+ }
+
return 0;
}
diff --git a/drivers/net/wireless/wl12xx/event.h b/drivers/net/wireless/wl12xx/event.h
index b6cf06e565a4..7ae5a0821241 100644
--- a/drivers/net/wireless/wl12xx/event.h
+++ b/drivers/net/wireless/wl12xx/event.h
@@ -58,13 +58,16 @@ enum {
CHANNEL_SWITCH_COMPLETE_EVENT_ID = BIT(17),
BSS_LOSE_EVENT_ID = BIT(18),
REGAINED_BSS_EVENT_ID = BIT(19),
- ROAMING_TRIGGER_MAX_TX_RETRY_EVENT_ID = BIT(20),
+ MAX_TX_RETRY_EVENT_ID = BIT(20),
/* STA: dummy paket for dynamic mem blocks */
DUMMY_PACKET_EVENT_ID = BIT(21),
/* AP: STA remove complete */
STA_REMOVE_COMPLETE_EVENT_ID = BIT(21),
SOFT_GEMINI_SENSE_EVENT_ID = BIT(22),
+ /* STA: SG prediction */
SOFT_GEMINI_PREDICTION_EVENT_ID = BIT(23),
+ /* AP: Inactive STA */
+ INACTIVE_STA_EVENT_ID = BIT(23),
SOFT_GEMINI_AVALANCHE_EVENT_ID = BIT(24),
PLT_RX_CALIBRATION_COMPLETE_EVENT_ID = BIT(25),
DBG_EVENT_ID = BIT(26),
@@ -119,7 +122,11 @@ struct event_mailbox {
/* AP FW only */
u8 hlid_removed;
+
+ /* a bitmap of hlids for stations that have been inactive too long */
__le16 sta_aging_status;
+
+ /* a bitmap of hlids for stations which didn't respond to TX */
__le16 sta_tx_retry_exceeded;
u8 reserved_5[24];
@@ -130,4 +137,7 @@ void wl1271_event_mbox_config(struct wl1271 *wl);
int wl1271_event_handle(struct wl1271 *wl, u8 mbox);
void wl1271_pspoll_work(struct work_struct *work);
+/* Functions from main.c */
+bool wl1271_is_active_sta(struct wl1271 *wl, u8 hlid);
+
#endif
diff --git a/drivers/net/wireless/wl12xx/init.c b/drivers/net/wireless/wl12xx/init.c
index cf466074237d..ab3b1e21de29 100644
--- a/drivers/net/wireless/wl12xx/init.c
+++ b/drivers/net/wireless/wl12xx/init.c
@@ -375,6 +375,10 @@ static int wl1271_sta_hw_init(struct wl1271 *wl)
if (ret < 0)
return ret;
+ ret = wl1271_acx_sta_max_tx_retry(wl);
+ if (ret < 0)
+ return ret;
+
ret = wl1271_acx_sta_mem_cfg(wl);
if (ret < 0)
return ret;
@@ -441,7 +445,7 @@ static int wl1271_ap_hw_init(struct wl1271 *wl)
if (ret < 0)
return ret;
- ret = wl1271_acx_max_tx_retry(wl);
+ ret = wl1271_acx_ap_max_tx_retry(wl);
if (ret < 0)
return ret;
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index 866453bc1d1f..0c69e959d0de 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -192,7 +192,8 @@ static struct conf_drv_settings default_conf = {
.long_retry_limit = 10,
.aflags = 0,
},
- .ap_max_tx_retries = 100,
+ .max_tx_retries = 100,
+ .ap_aging_period = 300,
.tid_conf_count = 4,
.tid_conf = {
[CONF_TX_AC_BE] = {
@@ -2953,6 +2954,12 @@ static void wl1271_free_sta(struct wl1271 *wl, u8 hlid)
__clear_bit(hlid, (unsigned long *)&wl->ap_fw_ps_map);
}
+bool wl1271_is_active_sta(struct wl1271 *wl, u8 hlid)
+{
+ int id = hlid - WL1271_AP_STA_HLID_START;
+ return test_bit(id, wl->ap_hlid_map);
+}
+
static int wl1271_op_sta_add(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
@@ -3535,7 +3542,6 @@ int wl1271_init_ieee80211(struct wl1271 *wl)
IEEE80211_HW_HAS_RATE_CONTROL |
IEEE80211_HW_CONNECTION_MONITOR |
IEEE80211_HW_SUPPORTS_CQM_RSSI |
- IEEE80211_HW_REPORTS_TX_ACK_STATUS |
IEEE80211_HW_AP_LINK_PS;
wl->hw->wiphy->cipher_suites = cipher_suites;
diff --git a/drivers/net/wireless/wl12xx/wl12xx.h b/drivers/net/wireless/wl12xx/wl12xx.h
index fb2b79fa42b4..7c521af58e7d 100644
--- a/drivers/net/wireless/wl12xx/wl12xx.h
+++ b/drivers/net/wireless/wl12xx/wl12xx.h
@@ -172,7 +172,6 @@ extern u32 wl12xx_debug_level;
#define WL1271_PS_STA_MAX_BLOCKS (2 * 9)
#define WL1271_AP_BSS_INDEX 0
-#define WL1271_AP_DEF_INACTIV_SEC 300
#define WL1271_AP_DEF_BEACON_EXP 20
#define ACX_TX_DESCRIPTORS 32