Add a hook in mac80211 to accept bitrate threshold configuration
calls from nl80211. This assigns a couple new variables in the
bss and ifmgd structs.
Signed-off-by: Paul Stewart <pstew@xxxxxxxxxx>
---
include/net/mac80211.h | 3 +++
net/mac80211/cfg.c | 17 +++++++++++++++++
net/mac80211/ieee80211_i.h | 16 ++++++++++++++++
3 files changed, 36 insertions(+), 0 deletions(-)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 9fdf982..1c2473c 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -215,6 +215,8 @@ enum ieee80211_bss_change {
* @cqm_rssi_thold: Connection quality monitor RSSI threshold, a zero value
* implies disabled
* @cqm_rssi_hyst: Connection quality monitor RSSI hysteresis
+ * @cqm_bitrate_thold: Connection quality monitor bitrate threshold, a zero
+ * value implies disabled
* @arp_addr_list: List of IPv4 addresses for hardware ARP filtering. The
* may filter ARP queries targeted for other addresses than listed here.
* The driver must allow ARP queries targeted for all address listed here
@@ -247,6 +249,7 @@ struct ieee80211_bss_conf {
u16 ht_operation_mode;
s32 cqm_rssi_thold;
u32 cqm_rssi_hyst;
+ u32 cqm_bitrate_thold;
enum nl80211_channel_type channel_type;
__be32 arp_addr_list[IEEE80211_BSS_ARP_ADDR_LIST_LEN];
u8 arp_addr_cnt;
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index 18bd0e5..520619c 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1498,6 +1498,22 @@ static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
return 0;
}
+static int ieee80211_set_cqm_bitrate_config(struct wiphy *wiphy,
+ struct net_device *dev,
+ u32 bitrate_thold)
+{
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+ struct ieee80211_vif *vif = &sdata->vif;
+ struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
+
+ bss_conf->cqm_bitrate_thold = bitrate_thold;
+ sdata->u.mgd.last_cqm_bitrate = 0;
+ memset(&sdata->u.mgd.last_cqm_tx_rate, 0,
+ sizeof(sdata->u.mgd.last_cqm_tx_rate));
+
+ return 0;
+}
+
static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
struct net_device *dev,
const u8 *addr,
@@ -1672,5 +1688,6 @@ struct cfg80211_ops mac80211_config_ops = {
.cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
.mgmt_tx = ieee80211_mgmt_tx,
.set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
+ .set_cqm_bitrate_config = ieee80211_set_cqm_bitrate_config,
.mgmt_frame_register = ieee80211_mgmt_frame_register,
};
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index b80c386..02bf0b7 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -338,6 +338,7 @@ enum ieee80211_sta_flags {
IEEE80211_STA_UAPSD_ENABLED = BIT(7),
IEEE80211_STA_NULLFUNC_ACKED = BIT(8),
IEEE80211_STA_RESET_SIGNAL_AVE = BIT(9),
+ IEEE80211_STA_TX_RATE_CHANGED = BIT(10),
};
struct ieee80211_if_managed {
@@ -406,6 +407,18 @@ struct ieee80211_if_managed {
* generated for the current association.
*/
int last_cqm_event_signal;
+
+ /*
+ * Last bitrate value sent as an event to signal quality listeners.
+ * This is a u32 in units of 1000 bits per second.
+ */
+ u32 last_cqm_bitrate;
+
+ /*
+ * Previous transmit rate. Used to detect whether the transmit rate
+ * for the previous packet is different from the one before it.
+ */
+ struct ieee80211_tx_rate last_cqm_tx_rate;
};
struct ieee80211_if_ibss {
@@ -723,6 +736,9 @@ struct ieee80211_local {
/* used to reconfigure hardware SM PS */
struct work_struct recalc_smps;
+ /* used to notify listeners of changes to tx bitrate */
+ struct work_struct rate_notify;
+
/* aggregated multicast list */
struct netdev_hw_addr_list mc_list;
--
1.7.1
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