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-rw-r--r--net/mac80211/Kconfig7
-rw-r--r--net/mac80211/Makefile4
-rw-r--r--net/mac80211/agg-tx.c7
-rw-r--r--net/mac80211/cfg.c22
-rw-r--r--net/mac80211/debugfs.c154
-rw-r--r--net/mac80211/debugfs_sta.c48
-rw-r--r--net/mac80211/driver-ops.h23
-rw-r--r--net/mac80211/driver-trace.h35
-rw-r--r--net/mac80211/ibss.c14
-rw-r--r--net/mac80211/ieee80211_i.h7
-rw-r--r--net/mac80211/iface.c14
-rw-r--r--net/mac80211/key.c288
-rw-r--r--net/mac80211/key.h22
-rw-r--r--net/mac80211/main.c78
-rw-r--r--net/mac80211/mlme.c23
-rw-r--r--net/mac80211/rate.h13
-rw-r--r--net/mac80211/rc80211_minstrel_ht.c824
-rw-r--r--net/mac80211/rc80211_minstrel_ht.h128
-rw-r--r--net/mac80211/rc80211_minstrel_ht_debugfs.c120
-rw-r--r--net/mac80211/rx.c38
-rw-r--r--net/mac80211/sta_info.c8
-rw-r--r--net/mac80211/sta_info.h44
-rw-r--r--net/mac80211/status.c2
-rw-r--r--net/mac80211/work.c2
24 files changed, 1459 insertions, 466 deletions
diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 8a91f6c0bb1..83eec7a8bd1 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -33,6 +33,13 @@ config MAC80211_RC_MINSTREL
---help---
This option enables the 'minstrel' TX rate control algorithm
+config MAC80211_RC_MINSTREL_HT
+ bool "Minstrel 802.11n support" if EMBEDDED
+ depends on MAC80211_RC_MINSTREL
+ default y
+ ---help---
+ This option enables the 'minstrel_ht' TX rate control algorithm
+
choice
prompt "Default rate control algorithm"
depends on MAC80211_HAS_RC
diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile
index 84b48ba8a77..fdb54e61d63 100644
--- a/net/mac80211/Makefile
+++ b/net/mac80211/Makefile
@@ -51,7 +51,11 @@ rc80211_pid-$(CONFIG_MAC80211_DEBUGFS) += rc80211_pid_debugfs.o
rc80211_minstrel-y := rc80211_minstrel.o
rc80211_minstrel-$(CONFIG_MAC80211_DEBUGFS) += rc80211_minstrel_debugfs.o
+rc80211_minstrel_ht-y := rc80211_minstrel_ht.o
+rc80211_minstrel_ht-$(CONFIG_MAC80211_DEBUGFS) += rc80211_minstrel_ht_debugfs.o
+
mac80211-$(CONFIG_MAC80211_RC_PID) += $(rc80211_pid-y)
mac80211-$(CONFIG_MAC80211_RC_MINSTREL) += $(rc80211_minstrel-y)
+mac80211-$(CONFIG_MAC80211_RC_MINSTREL_HT) += $(rc80211_minstrel_ht-y)
ccflags-y += -D__CHECK_ENDIAN__
diff --git a/net/mac80211/agg-tx.c b/net/mac80211/agg-tx.c
index 98258b7341e..d1b6664a253 100644
--- a/net/mac80211/agg-tx.c
+++ b/net/mac80211/agg-tx.c
@@ -540,14 +540,13 @@ int __ieee80211_stop_tx_ba_session(struct sta_info *sta, u16 tid,
return ret;
}
-int ieee80211_stop_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
- enum ieee80211_back_parties initiator)
+int ieee80211_stop_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid)
{
struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
struct ieee80211_sub_if_data *sdata = sta->sdata;
struct ieee80211_local *local = sdata->local;
- trace_api_stop_tx_ba_session(pubsta, tid, initiator);
+ trace_api_stop_tx_ba_session(pubsta, tid);
if (!local->ops->ampdu_action)
return -EINVAL;
@@ -555,7 +554,7 @@ int ieee80211_stop_tx_ba_session(struct ieee80211_sta *pubsta, u16 tid,
if (tid >= STA_TID_NUM)
return -EINVAL;
- return __ieee80211_stop_tx_ba_session(sta, tid, initiator);
+ return __ieee80211_stop_tx_ba_session(sta, tid, WLAN_BACK_INITIATOR);
}
EXPORT_SYMBOL(ieee80211_stop_tx_ba_session);
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index c7000a6ca37..952845e7072 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -120,6 +120,9 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
struct ieee80211_key *key;
int err;
+ if (!netif_running(dev))
+ return -ENETDOWN;
+
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
switch (params->cipher) {
@@ -145,7 +148,7 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
if (!key)
return -ENOMEM;
- rcu_read_lock();
+ mutex_lock(&sdata->local->sta_mtx);
if (mac_addr) {
sta = sta_info_get_bss(sdata, mac_addr);
@@ -160,7 +163,7 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
err = 0;
out_unlock:
- rcu_read_unlock();
+ mutex_unlock(&sdata->local->sta_mtx);
return err;
}
@@ -174,7 +177,7 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- rcu_read_lock();
+ mutex_lock(&sdata->local->sta_mtx);
if (mac_addr) {
ret = -ENOENT;
@@ -202,7 +205,7 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
ret = 0;
out_unlock:
- rcu_read_unlock();
+ mutex_unlock(&sdata->local->sta_mtx);
return ret;
}
@@ -305,15 +308,10 @@ static int ieee80211_config_default_key(struct wiphy *wiphy,
struct net_device *dev,
u8 key_idx)
{
- struct ieee80211_sub_if_data *sdata;
-
- rcu_read_lock();
+ struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
- sdata = IEEE80211_DEV_TO_SUB_IF(dev);
ieee80211_set_default_key(sdata, key_idx);
- rcu_read_unlock();
-
return 0;
}
@@ -1554,10 +1552,12 @@ static int ieee80211_cancel_remain_on_channel(struct wiphy *wiphy,
static int ieee80211_action(struct wiphy *wiphy, struct net_device *dev,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type,
+ bool channel_type_valid,
const u8 *buf, size_t len, u64 *cookie)
{
return ieee80211_mgd_action(IEEE80211_DEV_TO_SUB_IF(dev), chan,
- channel_type, buf, len, cookie);
+ channel_type, channel_type_valid,
+ buf, len, cookie);
}
struct cfg80211_ops mac80211_config_ops = {
diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index 637929b65cc..a694c593ff6 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -307,9 +307,6 @@ static const struct file_operations queues_ops = {
/* statistics stuff */
-#define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \
- DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value)
-
static ssize_t format_devstat_counter(struct ieee80211_local *local,
char __user *userbuf,
size_t count, loff_t *ppos,
@@ -351,75 +348,16 @@ static const struct file_operations stats_ ##name## _ops = { \
.open = mac80211_open_file_generic, \
};
-#define DEBUGFS_STATS_ADD(name) \
+#define DEBUGFS_STATS_ADD(name, field) \
+ debugfs_create_u32(#name, 0400, statsd, (u32 *) &field);
+#define DEBUGFS_DEVSTATS_ADD(name) \
debugfs_create_file(#name, 0400, statsd, local, &stats_ ##name## _ops);
-DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u",
- local->dot11TransmittedFragmentCount);
-DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u",
- local->dot11MulticastTransmittedFrameCount);
-DEBUGFS_STATS_FILE(failed_count, 20, "%u",
- local->dot11FailedCount);
-DEBUGFS_STATS_FILE(retry_count, 20, "%u",
- local->dot11RetryCount);
-DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u",
- local->dot11MultipleRetryCount);
-DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u",
- local->dot11FrameDuplicateCount);
-DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u",
- local->dot11ReceivedFragmentCount);
-DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u",
- local->dot11MulticastReceivedFrameCount);
-DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u",
- local->dot11TransmittedFrameCount);
-#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
-DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u",
- local->tx_handlers_drop);
-DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u",
- local->tx_handlers_queued);
-DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u",
- local->tx_handlers_drop_unencrypted);
-DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u",
- local->tx_handlers_drop_fragment);
-DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u",
- local->tx_handlers_drop_wep);
-DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u",
- local->tx_handlers_drop_not_assoc);
-DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u",
- local->tx_handlers_drop_unauth_port);
-DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u",
- local->rx_handlers_drop);
-DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u",
- local->rx_handlers_queued);
-DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u",
- local->rx_handlers_drop_nullfunc);
-DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u",
- local->rx_handlers_drop_defrag);
-DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u",
- local->rx_handlers_drop_short);
-DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u",
- local->rx_handlers_drop_passive_scan);
-DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u",
- local->tx_expand_skb_head);
-DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u",
- local->tx_expand_skb_head_cloned);
-DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u",
- local->rx_expand_skb_head);
-DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u",
- local->rx_expand_skb_head2);
-DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u",
- local->rx_handlers_fragments);
-DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u",
- local->tx_status_drop);
-
-#endif
-
DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount);
DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount);
DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount);
DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount);
-
void debugfs_hw_add(struct ieee80211_local *local)
{
struct dentry *phyd = local->hw.wiphy->debugfsdir;
@@ -448,38 +386,60 @@ void debugfs_hw_add(struct ieee80211_local *local)
if (!statsd)
return;
- DEBUGFS_STATS_ADD(transmitted_fragment_count);
- DEBUGFS_STATS_ADD(multicast_transmitted_frame_count);
- DEBUGFS_STATS_ADD(failed_count);
- DEBUGFS_STATS_ADD(retry_count);
- DEBUGFS_STATS_ADD(multiple_retry_count);
- DEBUGFS_STATS_ADD(frame_duplicate_count);
- DEBUGFS_STATS_ADD(received_fragment_count);
- DEBUGFS_STATS_ADD(multicast_received_frame_count);
- DEBUGFS_STATS_ADD(transmitted_frame_count);
+ DEBUGFS_STATS_ADD(transmitted_fragment_count,
+ local->dot11TransmittedFragmentCount);
+ DEBUGFS_STATS_ADD(multicast_transmitted_frame_count,
+ local->dot11MulticastTransmittedFrameCount);
+ DEBUGFS_STATS_ADD(failed_count, local->dot11FailedCount);
+ DEBUGFS_STATS_ADD(retry_count, local->dot11RetryCount);
+ DEBUGFS_STATS_ADD(multiple_retry_count,
+ local->dot11MultipleRetryCount);
+ DEBUGFS_STATS_ADD(frame_duplicate_count,
+ local->dot11FrameDuplicateCount);
+ DEBUGFS_STATS_ADD(received_fragment_count,
+ local->dot11ReceivedFragmentCount);
+ DEBUGFS_STATS_ADD(multicast_received_frame_count,
+ local->dot11MulticastReceivedFrameCount);
+ DEBUGFS_STATS_ADD(transmitted_frame_count,
+ local->dot11TransmittedFrameCount);
#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
- DEBUGFS_STATS_ADD(tx_handlers_drop);
- DEBUGFS_STATS_ADD(tx_handlers_queued);
- DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted);
- DEBUGFS_STATS_ADD(tx_handlers_drop_fragment);
- DEBUGFS_STATS_ADD(tx_handlers_drop_wep);
- DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc);
- DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port);
- DEBUGFS_STATS_ADD(rx_handlers_drop);
- DEBUGFS_STATS_ADD(rx_handlers_queued);
- DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc);
- DEBUGFS_STATS_ADD(rx_handlers_drop_defrag);
- DEBUGFS_STATS_ADD(rx_handlers_drop_short);
- DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan);
- DEBUGFS_STATS_ADD(tx_expand_skb_head);
- DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned);
- DEBUGFS_STATS_ADD(rx_expand_skb_head);
- DEBUGFS_STATS_ADD(rx_expand_skb_head2);
- DEBUGFS_STATS_ADD(rx_handlers_fragments);
- DEBUGFS_STATS_ADD(tx_status_drop);
+ DEBUGFS_STATS_ADD(tx_handlers_drop, local->tx_handlers_drop);
+ DEBUGFS_STATS_ADD(tx_handlers_queued, local->tx_handlers_queued);
+ DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted,
+ local->tx_handlers_drop_unencrypted);
+ DEBUGFS_STATS_ADD(tx_handlers_drop_fragment,
+ local->tx_handlers_drop_fragment);
+ DEBUGFS_STATS_ADD(tx_handlers_drop_wep,
+ local->tx_handlers_drop_wep);
+ DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc,
+ local->tx_handlers_drop_not_assoc);
+ DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port,
+ local->tx_handlers_drop_unauth_port);
+ DEBUGFS_STATS_ADD(rx_handlers_drop, local->rx_handlers_drop);
+ DEBUGFS_STATS_ADD(rx_handlers_queued, local->rx_handlers_queued);
+ DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc,
+ local->rx_handlers_drop_nullfunc);
+ DEBUGFS_STATS_ADD(rx_handlers_drop_defrag,
+ local->rx_handlers_drop_defrag);
+ DEBUGFS_STATS_ADD(rx_handlers_drop_short,
+ local->rx_handlers_drop_short);
+ DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan,
+ local->rx_handlers_drop_passive_scan);
+ DEBUGFS_STATS_ADD(tx_expand_skb_head,
+ local->tx_expand_skb_head);
+ DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned,
+ local->tx_expand_skb_head_cloned);
+ DEBUGFS_STATS_ADD(rx_expand_skb_head,
+ local->rx_expand_skb_head);
+ DEBUGFS_STATS_ADD(rx_expand_skb_head2,
+ local->rx_expand_skb_head2);
+ DEBUGFS_STATS_ADD(rx_handlers_fragments,
+ local->rx_handlers_fragments);
+ DEBUGFS_STATS_ADD(tx_status_drop,
+ local->tx_status_drop);
#endif
- DEBUGFS_STATS_ADD(dot11ACKFailureCount);
- DEBUGFS_STATS_ADD(dot11RTSFailureCount);
- DEBUGFS_STATS_ADD(dot11FCSErrorCount);
- DEBUGFS_STATS_ADD(dot11RTSSuccessCount);
+ DEBUGFS_DEVSTATS_ADD(dot11ACKFailureCount);
+ DEBUGFS_DEVSTATS_ADD(dot11RTSFailureCount);
+ DEBUGFS_DEVSTATS_ADD(dot11FCSErrorCount);
+ DEBUGFS_DEVSTATS_ADD(dot11RTSSuccessCount);
}
diff --git a/net/mac80211/debugfs_sta.c b/net/mac80211/debugfs_sta.c
index e763f1529dd..576e024715e 100644
--- a/net/mac80211/debugfs_sta.c
+++ b/net/mac80211/debugfs_sta.c
@@ -30,7 +30,6 @@ static ssize_t sta_ ##name## _read(struct file *file, \
}
#define STA_READ_D(name, field) STA_READ(name, 20, field, "%d\n")
#define STA_READ_U(name, field) STA_READ(name, 20, field, "%u\n")
-#define STA_READ_LU(name, field) STA_READ(name, 20, field, "%lu\n")
#define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n")
#define STA_OPS(name) \
@@ -52,19 +51,7 @@ static const struct file_operations sta_ ##name## _ops = { \
STA_FILE(aid, sta.aid, D);
STA_FILE(dev, sdata->name, S);
-STA_FILE(rx_packets, rx_packets, LU);
-STA_FILE(tx_packets, tx_packets, LU);
-STA_FILE(rx_bytes, rx_bytes, LU);
-STA_FILE(tx_bytes, tx_bytes, LU);
-STA_FILE(rx_duplicates, num_duplicates, LU);
-STA_FILE(rx_fragments, rx_fragments, LU);
-STA_FILE(rx_dropped, rx_dropped, LU);
-STA_FILE(tx_fragments, tx_fragments, LU);
-STA_FILE(tx_filtered, tx_filtered_count, LU);
-STA_FILE(tx_retry_failed, tx_retry_failed, LU);
-STA_FILE(tx_retry_count, tx_retry_count, LU);
STA_FILE(last_signal, last_signal, D);
-STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU);
static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
@@ -210,8 +197,7 @@ static ssize_t sta_agg_status_write(struct file *file, const char __user *userbu
if (start)
ret = ieee80211_start_tx_ba_session(&sta->sta, tid);
else
- ret = ieee80211_stop_tx_ba_session(&sta->sta, tid,
- WLAN_BACK_RECIPIENT);
+ ret = ieee80211_stop_tx_ba_session(&sta->sta, tid);
} else {
__ieee80211_stop_rx_ba_session(sta, tid, WLAN_BACK_RECIPIENT, 3);
ret = 0;
@@ -307,6 +293,13 @@ STA_OPS(ht_capa);
debugfs_create_file(#name, 0400, \
sta->debugfs.dir, sta, &sta_ ##name## _ops);
+#define DEBUGFS_ADD_COUNTER(name, field) \
+ if (sizeof(sta->field) == sizeof(u32)) \
+ debugfs_create_u32(#name, 0400, sta->debugfs.dir, \
+ (u32 *) &sta->field); \
+ else \
+ debugfs_create_u64(#name, 0400, sta->debugfs.dir, \
+ (u64 *) &sta->field);
void ieee80211_sta_debugfs_add(struct sta_info *sta)
{
@@ -339,20 +332,21 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta)
DEBUGFS_ADD(last_seq_ctrl);
DEBUGFS_ADD(agg_status);
DEBUGFS_ADD(dev);
- DEBUGFS_ADD(rx_packets);
- DEBUGFS_ADD(tx_packets);
- DEBUGFS_ADD(rx_bytes);
- DEBUGFS_ADD(tx_bytes);
- DEBUGFS_ADD(rx_duplicates);
- DEBUGFS_ADD(rx_fragments);
- DEBUGFS_ADD(rx_dropped);
- DEBUGFS_ADD(tx_fragments);
- DEBUGFS_ADD(tx_filtered);
- DEBUGFS_ADD(tx_retry_failed);
- DEBUGFS_ADD(tx_retry_count);
DEBUGFS_ADD(last_signal);
- DEBUGFS_ADD(wep_weak_iv_count);
DEBUGFS_ADD(ht_capa);
+
+ DEBUGFS_ADD_COUNTER(rx_packets, rx_packets);
+ DEBUGFS_ADD_COUNTER(tx_packets, tx_packets);
+ DEBUGFS_ADD_COUNTER(rx_bytes, rx_bytes);
+ DEBUGFS_ADD_COUNTER(tx_bytes, tx_bytes);
+ DEBUGFS_ADD_COUNTER(rx_duplicates, num_duplicates);
+ DEBUGFS_ADD_COUNTER(rx_fragments, rx_fragments);
+ DEBUGFS_ADD_COUNTER(rx_dropped, rx_dropped);
+ DEBUGFS_ADD_COUNTER(tx_fragments, tx_fragments);
+ DEBUGFS_ADD_COUNTER(tx_filtered, tx_filtered_count);
+ DEBUGFS_ADD_COUNTER(tx_retry_failed, tx_retry_failed);
+ DEBUGFS_ADD_COUNTER(tx_retry_count, tx_retry_count);
+ DEBUGFS_ADD_COUNTER(wep_weak_iv_count, wep_weak_iv_count);
}
void ieee80211_sta_debugfs_remove(struct sta_info *sta)
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index 9c1da080916..7d18a3245e3 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -83,6 +83,23 @@ static inline void drv_bss_info_changed(struct ieee80211_local *local,
trace_drv_bss_info_changed(local, sdata, info, changed);
}
+struct in_ifaddr;
+static inline int drv_configure_arp_filter(struct ieee80211_local *local,
+ struct ieee80211_vif *vif,
+ struct in_ifaddr *ifa_list)
+{
+ int ret = 0;
+
+ might_sleep();
+
+ if (local->ops->configure_arp_filter)
+ ret = local->ops->configure_arp_filter(&local->hw, vif,
+ ifa_list);
+
+ trace_drv_configure_arp_filter(local, vif_to_sdata(vif), ifa_list, ret);
+ return ret;
+}
+
static inline u64 drv_prepare_multicast(struct ieee80211_local *local,
struct netdev_hw_addr_list *mc_list)
{
@@ -252,9 +269,6 @@ static inline int drv_sta_add(struct ieee80211_local *local,
if (local->ops->sta_add)
ret = local->ops->sta_add(&local->hw, &sdata->vif, sta);
- else if (local->ops->sta_notify)
- local->ops->sta_notify(&local->hw, &sdata->vif,
- STA_NOTIFY_ADD, sta);
trace_drv_sta_add(local, sdata, sta, ret);
@@ -269,9 +283,6 @@ static inline void drv_sta_remove(struct ieee80211_local *local,
if (local->ops->sta_remove)
local->ops->sta_remove(&local->hw, &sdata->vif, sta);
- else if (local->ops->sta_notify)
- local->ops->sta_notify(&local->hw, &sdata->vif,
- STA_NOTIFY_REMOVE, sta);
trace_drv_sta_remove(local, sdata, sta);
}
diff --git a/net/mac80211/driver-trace.h b/net/mac80211/driver-trace.h
index 6a9b2342a9c..6b90630151a 100644
--- a/net/mac80211/driver-trace.h
+++ b/net/mac80211/driver-trace.h
@@ -219,6 +219,31 @@ TRACE_EVENT(drv_bss_info_changed,
)
);
+TRACE_EVENT(drv_configure_arp_filter,
+ TP_PROTO(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct in_ifaddr *ifa_list, int ret),
+
+ TP_ARGS(local, sdata, ifa_list, ret),
+
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ VIF_ENTRY
+ __field(int, ret)
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ VIF_ASSIGN;
+ __entry->ret = ret;
+ ),
+
+ TP_printk(
+ VIF_PR_FMT LOCAL_PR_FMT " ret:%d",
+ VIF_PR_ARG, LOCAL_PR_ARG, __entry->ret
+ )
+);
+
TRACE_EVENT(drv_prepare_multicast,
TP_PROTO(struct ieee80211_local *local, int mc_count, u64 ret),
@@ -851,25 +876,23 @@ TRACE_EVENT(api_start_tx_ba_cb,
);
TRACE_EVENT(api_stop_tx_ba_session,
- TP_PROTO(struct ieee80211_sta *sta, u16 tid, u16 initiator),
+ TP_PROTO(struct ieee80211_sta *sta, u16 tid),
- TP_ARGS(sta, tid, initiator),
+ TP_ARGS(sta, tid),
TP_STRUCT__entry(
STA_ENTRY
__field(u16, tid)
- __field(u16, initiator)
),
TP_fast_assign(
STA_ASSIGN;
__entry->tid = tid;
- __entry->initiator = initiator;
),
TP_printk(
- STA_PR_FMT " tid:%d initiator:%d",
- STA_PR_ARG, __entry->tid, __entry->initiator
+ STA_PR_FMT " tid:%d",
+ STA_PR_ARG, __entry->tid
)
);
diff --git a/net/mac80211/ibss.c b/net/mac80211/ibss.c
index b2cc1fda6cf..d7a96ced2c8 100644
--- a/net/mac80211/ibss.c
+++ b/net/mac80211/ibss.c
@@ -798,6 +798,15 @@ static void ieee80211_ibss_work(struct work_struct *work)
}
}
+static void ieee80211_queue_ibss_work(struct ieee80211_sub_if_data *sdata)
+{
+ struct ieee80211_if_ibss *ifibss = &sdata->u.ibss;
+ struct ieee80211_local *local = sdata->local;
+
+ set_bit(IEEE80211_IBSS_REQ_RUN, &ifibss->request);
+ ieee80211_queue_work(&local->hw, &ifibss->work);
+}
+
static void ieee80211_ibss_timer(unsigned long data)
{
struct ieee80211_sub_if_data *sdata =
@@ -810,8 +819,7 @@ static void ieee80211_ibss_timer(unsigned long data)
return;
}
- set_bit(IEEE80211_IBSS_REQ_RUN, &ifibss->request);
- ieee80211_queue_work(&local->hw, &ifibss->work);
+ ieee80211_queue_ibss_work(sdata);
}
#ifdef CONFIG_PM
@@ -859,7 +867,7 @@ void ieee80211_ibss_notify_scan_completed(struct ieee80211_local *local)
if (!sdata->u.ibss.ssid_len)
continue;
sdata->u.ibss.last_scan_completed = jiffies;
- mod_timer(&sdata->u.ibss.timer, 0);
+ ieee80211_queue_ibss_work(sdata);
}
mutex_unlock(&local->iflist_mtx);
}
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index 1a9e2da37a9..4d3883e20fc 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -746,10 +746,10 @@ struct ieee80211_local {
struct mutex iflist_mtx;
/*
- * Key lock, protects sdata's key_list and sta_info's
+ * Key mutex, protects sdata's key_list and sta_info's
* key pointers (write access, they're RCU.)
*/
- spinlock_t key_lock;
+ struct mutex key_mtx;
/* Scanning and BSS list */
@@ -851,6 +851,7 @@ struct ieee80211_local {
struct work_struct dynamic_ps_disable_work;
struct timer_list dynamic_ps_timer;
struct notifier_block network_latency_notifier;
+ struct notifier_block ifa_notifier;
int user_power_level; /* in dBm */
int power_constr_level; /* in dBm */
@@ -988,6 +989,7 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
int ieee80211_mgd_action(struct ieee80211_sub_if_data *sdata,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type,
+ bool channel_type_valid,
const u8 *buf, size_t len, u64 *cookie);
ieee80211_rx_result ieee80211_sta_rx_mgmt(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb);
@@ -996,6 +998,7 @@ void ieee80211_send_pspoll(struct ieee80211_local *local,
void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency);
int ieee80211_max_network_latency(struct notifier_block *nb,
unsigned long data, void *dummy);
+int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata);
void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
struct ieee80211_channel_sw_ie *sw_elem,
struct ieee80211_bss *bss,
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index 50deb017fd6..1afa9ec81fe 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -268,7 +268,6 @@ static int ieee80211_open(struct net_device *dev)
changed |= ieee80211_reset_erp_info(sdata);
ieee80211_bss_info_change_notify(sdata, changed);
- ieee80211_enable_keys(sdata);
if (sdata->vif.type == NL80211_IFTYPE_STATION)
netif_carrier_off(dev);
@@ -321,15 +320,6 @@ static int ieee80211_open(struct net_device *dev)
ieee80211_recalc_ps(local, -1);
- /*
- * ieee80211_sta_work is disabled while network interface
- * is down. Therefore, some configuration changes may not
- * yet be effective. Trigger execution of ieee80211_sta_work
- * to fix this.
- */
- if (sdata->vif.type == NL80211_IFTYPE_STATION)
- ieee80211_queue_work(&local->hw, &sdata->u.mgd.work);
-
netif_tx_start_all_queues(dev);
return 0;
@@ -531,8 +521,8 @@ static int ieee80211_stop(struct net_device *dev)
BSS_CHANGED_BEACON_ENABLED);
}
- /* disable all keys for as long as this netdev is down */
- ieee80211_disable_keys(sdata);
+ /* free all remaining keys, there shouldn't be any */
+ ieee80211_free_keys(sdata);
drv_remove_interface(local, &sdata->vif);
}
diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index e8f6e3b252d..d0d9001a4a6 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -36,80 +36,20 @@
* There is currently no way of knowing this except by looking into
* debugfs.
*
- * All key operations are protected internally so you can call them at
- * any time.
+ * All key operations are protected internally.
*
* Within mac80211, key references are, just as STA structure references,
* protected by RCU. Note, however, that some things are unprotected,
* namely the key->sta dereferences within the hardware acceleration
- * functions. This means that sta_info_destroy() must flush the key todo
- * list.
- *
- * All the direct key list manipulation functions must not sleep because
- * they can operate on STA info structs that are protected by RCU.
+ * functions. This means that sta_info_destroy() must remove the key
+ * which waits for an RCU grace period.
*/
static const u8 bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
-/* key mutex: used to synchronise todo runners */
-static DEFINE_MUTEX(key_mutex);
-static DEFINE_SPINLOCK(todo_lock);
-static LIST_HEAD(todo_list);
-
-static void key_todo(struct work_struct *work)
+static void assert_key_lock(struct ieee80211_local *local)
{
- ieee80211_key_todo();
-}
-
-static DECLARE_WORK(todo_work, key_todo);
-
-/**
- * add_todo - add todo item for a key
- *
- * @key: key to add to do item for
- * @flag: todo flag(s)
- *
- * Must be called with IRQs or softirqs disabled.
- */
-static void add_todo(struct ieee80211_key *key, u32 flag)
-{
- if (!key)
- return;
-
- spin_lock(&todo_lock);
- key->flags |= flag;
- /*
- * Remove again if already on the list so that we move it to the end.
- */
- if (!list_empty(&key->todo))
- list_del(&key->todo);
- list_add_tail(&key->todo, &todo_list);
- schedule_work(&todo_work);
- spin_unlock(&todo_lock);
-}
-
-/**
- * ieee80211_key_lock - lock the mac80211 key operation lock
- *
- * This locks the (global) mac80211 key operation lock, all
- * key operations must be done under this lock.
- */
-static void ieee80211_key_lock(void)
-{
- mutex_lock(&key_mutex);
-}
-
-/**
- * ieee80211_key_unlock - unlock the mac80211 key operation lock
- */
-static void ieee80211_key_unlock(void)
-{
- mutex_unlock(&key_mutex);
-}
-
-static void assert_key_lock(void)
-{
- WARN_ON(!mutex_is_locked(&key_mutex));
+ WARN_ON(!mutex_is_locked(&local->key_mtx));
}
static struct ieee80211_sta *get_sta_for_key(struct ieee80211_key *key)
@@ -126,12 +66,13 @@ static void ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
struct ieee80211_sta *sta;
int ret;
- assert_key_lock();
might_sleep();
if (!key->local->ops->set_key)
return;
+ assert_key_lock(key->local);
+
sta = get_sta_for_key(key);
sdata = key->sdata;
@@ -142,11 +83,8 @@ static void ieee80211_key_enable_hw_accel(struct ieee80211_key *key)
ret = drv_set_key(key->local, SET_KEY, sdata, sta, &key->conf);
- if (!ret) {
- spin_lock_bh(&todo_lock);
+ if (!ret)
key->flags |= KEY_FLAG_UPLOADED_TO_HARDWARE;
- spin_unlock_bh(&todo_lock);
- }
if (ret && ret != -ENOSPC && ret != -EOPNOTSUPP)
printk(KERN_ERR "mac80211-%s: failed to set key "
@@ -161,18 +99,15 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key)
struct ieee80211_sta *sta;
int ret;
- assert_key_lock();
might_sleep();
if (!key || !key->local->ops->set_key)
return;
- spin_lock_bh(&todo_lock);
- if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE)) {
- spin_unlock_bh(&todo_lock);
+ assert_key_lock(key->local);
+
+ if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
return;
- }
- spin_unlock_bh(&todo_lock);
sta = get_sta_for_key(key);
sdata = key->sdata;
@@ -191,9 +126,7 @@ static void ieee80211_key_disable_hw_accel(struct ieee80211_key *key)
wiphy_name(key->local->hw.wiphy),
key->conf.keyidx, sta ? sta->addr : bcast_addr, ret);
- spin_lock_bh(&todo_lock);
key->flags &= ~KEY_FLAG_UPLOADED_TO_HARDWARE;
- spin_unlock_bh(&todo_lock);
}
static void __ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata,
@@ -201,22 +134,24 @@ static void __ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata,
{
struct ieee80211_key *key = NULL;
+ assert_key_lock(sdata->local);
+
if (idx >= 0 && idx < NUM_DEFAULT_KEYS)
key = sdata->keys[idx];
rcu_assign_pointer(sdata->default_key, key);
- if (key)
- add_todo(key, KEY_FLAG_TODO_DEFKEY);
+ if (key) {
+ ieee80211_debugfs_key_remove_default(key->sdata);
+ ieee80211_debugfs_key_add_default(key->sdata);
+ }
}
void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx)
{
- unsigned long flags;
-
- spin_lock_irqsave(&sdata->local->key_lock, flags);
+ mutex_lock(&sdata->local->key_mtx);
__ieee80211_set_default_key(sdata, idx);
- spin_unlock_irqrestore(&sdata->local->key_lock, flags);
+ mutex_unlock(&sdata->local->key_mtx);
}
static void
@@ -224,24 +159,26 @@ __ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata, int idx)
{
struct ieee80211_key *key = NULL;
+ assert_key_lock(sdata->local);
+
if (idx >= NUM_DEFAULT_KEYS &&
idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
key = sdata->keys[idx];
rcu_assign_pointer(sdata->default_mgmt_key, key);
- if (key)
- add_todo(key, KEY_FLAG_TODO_DEFMGMTKEY);
+ if (key) {
+ ieee80211_debugfs_key_remove_mgmt_default(key->sdata);
+ ieee80211_debugfs_key_add_mgmt_default(key->sdata);
+ }
}
void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata,
int idx)
{
- unsigned long flags;
-
- spin_lock_irqsave(&sdata->local->key_lock, flags);
+ mutex_lock(&sdata->local->key_mtx);
__ieee80211_set_default_mgmt_key(sdata, idx);
- spin_unlock_irqrestore(&sdata->local->key_lock, flags);
+ mutex_unlock(&sdata->local->key_mtx);
}
@@ -352,7 +289,6 @@ struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg,
}
memcpy(key->conf.key, key_data, key_len);
INIT_LIST_HEAD(&key->list);
- INIT_LIST_HEAD(&key->todo);
if (alg == ALG_CCMP) {
/*
@@ -382,12 +318,27 @@ struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg,
return key;
}
+static void __ieee80211_key_destroy(struct ieee80211_key *key)
+{
+ if (!key)
+ return;
+
+ ieee80211_key_disable_hw_accel(key);
+
+ if (key->conf.alg == ALG_CCMP)
+ ieee80211_aes_key_free(key->u.ccmp.tfm);
+ if (key->conf.alg == ALG_AES_CMAC)
+ ieee80211_aes_cmac_key_free(key->u.aes_cmac.tfm);
+ ieee80211_debugfs_key_remove(key);
+
+ kfree(key);
+}
+
void ieee80211_key_link(struct ieee80211_key *key,
struct ieee80211_sub_if_data *sdata,
struct sta_info *sta)
{
struct ieee80211_key *old_key;
- unsigned long flags;
int idx;
BUG_ON(!sdata);
@@ -431,7 +382,7 @@ void ieee80211_key_link(struct ieee80211_key *key,
}
}
- spin_lock_irqsave(&sdata->local->key_lock, flags);
+ mutex_lock(&sdata->local->key_mtx);
if (sta)
old_key = sta->key;
@@ -439,15 +390,13 @@ void ieee80211_key_link(struct ieee80211_key *key,
old_key = sdata->keys[idx];
__ieee80211_key_replace(sdata, sta, old_key, key);
+ __ieee80211_key_destroy(old_key);
- /* free old key later */
- add_todo(old_key, KEY_FLAG_TODO_DELETE);
+ ieee80211_debugfs_key_add(key);
- add_todo(key, KEY_FLAG_TODO_ADD_DEBUGFS);
- if (ieee80211_sdata_running(sdata))
- add_todo(key, KEY_FLAG_TODO_HWACCEL_ADD);
+ ieee80211_key_enable_hw_accel(key);
- spin_unlock_irqrestore(&sdata->local->key_lock, flags);
+ mutex_unlock(&sdata->local->key_mtx);
}
static void __ieee80211_key_free(struct ieee80211_key *key)
@@ -458,170 +407,65 @@ static void __ieee80211_key_free(struct ieee80211_key *key)
if (key->sdata)
__ieee80211_key_replace(key->sdata, key->sta,
key, NULL);
-
- add_todo(key, KEY_FLAG_TODO_DELETE);
+ __ieee80211_key_destroy(key);
}
void ieee80211_key_free(struct ieee80211_key *key)
{
- unsigned long flags;
+ struct ieee80211_local *local;
if (!key)
return;
- if (!key->sdata) {
- /* The key has not been linked yet, simply free it
- * and don't Oops */
- if (key->conf.alg == ALG_CCMP)
- ieee80211_aes_key_free(key->u.ccmp.tfm);
- kfree(key);
- return;
- }
+ local = key->sdata->local;
- spin_lock_irqsave(&key->sdata->local->key_lock, flags);
+ mutex_lock(&local->key_mtx);
__ieee80211_key_free(key);
- spin_unlock_irqrestore(&key->sdata->local->key_lock, flags);
+ mutex_unlock(&local->key_mtx);
}
-/*
- * To be safe against concurrent manipulations of the list (which shouldn't
- * actually happen) we need to hold the spinlock. But under the spinlock we
- * can't actually do much, so we defer processing to the todo list. Then run
- * the todo list to be sure the operation and possibly previously pending
- * operations are completed.
- */
-static void ieee80211_todo_for_each_key(struct ieee80211_sub_if_data *sdata,
- u32 todo_flags)
+void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_key *key;
- unsigned long flags;
-
- might_sleep();
-
- spin_lock_irqsave(&sdata->local->key_lock, flags);
- list_for_each_entry(key, &sdata->key_list, list)
- add_todo(key, todo_flags);
- spin_unlock_irqrestore(&sdata->local->key_lock, flags);
-
- ieee80211_key_todo();
-}
-void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata)
-{
ASSERT_RTNL();
if (WARN_ON(!ieee80211_sdata_running(sdata)))
return;
- ieee80211_todo_for_each_key(sdata, KEY_FLAG_TODO_HWACCEL_ADD);
-}
-
-void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata)
-{
- ASSERT_RTNL();
-
- ieee80211_todo_for_each_key(sdata, KEY_FLAG_TODO_HWACCEL_REMOVE);
-}
-
-static void __ieee80211_key_destroy(struct ieee80211_key *key)
-{
- if (!key)
- return;
-
- ieee80211_key_disable_hw_accel(key);
+ mutex_lock(&sdata->local->key_mtx);
- if (key->conf.alg == ALG_CCMP)
- ieee80211_aes_key_free(key->u.ccmp.tfm);
- if (key->conf.alg == ALG_AES_CMAC)
- ieee80211_aes_cmac_key_free(key->u.aes_cmac.tfm);
- ieee80211_debugfs_key_remove(key);
+ list_for_each_entry(key, &sdata->key_list, list)
+ ieee80211_key_enable_hw_accel(key);
- kfree(key);
+ mutex_unlock(&sdata->local->key_mtx);
}
-static void __ieee80211_key_todo(void)
+void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_key *key;
- bool work_done;
- u32 todoflags;
- /*
- * NB: sta_info_destroy relies on this!
- */
- synchronize_rcu();
-
- spin_lock_bh(&todo_lock);
- while (!list_empty(&todo_list)) {
- key = list_first_entry(&todo_list, struct ieee80211_key, todo);
- list_del_init(&key->todo);
- todoflags = key->flags & (KEY_FLAG_TODO_ADD_DEBUGFS |
- KEY_FLAG_TODO_DEFKEY |
- KEY_FLAG_TODO_DEFMGMTKEY |
- KEY_FLAG_TODO_HWACCEL_ADD |
- KEY_FLAG_TODO_HWACCEL_REMOVE |
- KEY_FLAG_TODO_DELETE);
- key->flags &= ~todoflags;
- spin_unlock_bh(&todo_lock);
-
- work_done = false;
-
- if (todoflags & KEY_FLAG_TODO_ADD_DEBUGFS) {
- ieee80211_debugfs_key_add(key);
- work_done = true;
- }
- if (todoflags & KEY_FLAG_TODO_DEFKEY) {
- ieee80211_debugfs_key_remove_default(key->sdata);
- ieee80211_debugfs_key_add_default(key->sdata);
- work_done = true;
- }
- if (todoflags & KEY_FLAG_TODO_DEFMGMTKEY) {
- ieee80211_debugfs_key_remove_mgmt_default(key->sdata);
- ieee80211_debugfs_key_add_mgmt_default(key->sdata);
- work_done = true;
- }
- if (todoflags & KEY_FLAG_TODO_HWACCEL_ADD) {
- ieee80211_key_enable_hw_accel(key);
- work_done = true;
- }
- if (todoflags & KEY_FLAG_TODO_HWACCEL_REMOVE) {
- ieee80211_key_disable_hw_accel(key);
- work_done = true;
- }
- if (todoflags & KEY_FLAG_TODO_DELETE) {
- __ieee80211_key_destroy(key);
- work_done = true;
- }
+ ASSERT_RTNL();
- WARN_ON(!work_done);
+ mutex_lock(&sdata->local->key_mtx);
- spin_lock_bh(&todo_lock);
- }
- spin_unlock_bh(&todo_lock);
-}
+ list_for_each_entry(key, &sdata->key_list, list)
+ ieee80211_key_disable_hw_accel(key);
-void ieee80211_key_todo(void)
-{
- ieee80211_key_lock();
- __ieee80211_key_todo();
- ieee80211_key_unlock();
+ mutex_unlock(&sdata->local->key_mtx);
}
void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata)
{
struct ieee80211_key *key, *tmp;
- unsigned long flags;
- ieee80211_key_lock();
+ mutex_lock(&sdata->local->key_mtx);
ieee80211_debugfs_key_remove_default(sdata);
ieee80211_debugfs_key_remove_mgmt_default(sdata);
- spin_lock_irqsave(&sdata->local->key_lock, flags);
list_for_each_entry_safe(key, tmp, &sdata->key_list, list)
__ieee80211_key_free(key);
- spin_unlock_irqrestore(&sdata->local->key_lock, flags);
-
- __ieee80211_key_todo();
- ieee80211_key_unlock();
+ mutex_unlock(&sdata->local->key_mtx);
}
diff --git a/net/mac80211/key.h b/net/mac80211/key.h
index bdc2968c2bb..9996e3be6e6 100644
--- a/net/mac80211/key.h
+++ b/net/mac80211/key.h
@@ -38,25 +38,9 @@ struct sta_info;
*
* @KEY_FLAG_UPLOADED_TO_HARDWARE: Indicates that this key is present
* in the hardware for TX crypto hardware acceleration.
- * @KEY_FLAG_TODO_DELETE: Key is marked for deletion and will, after an
- * RCU grace period, no longer be reachable other than from the
- * todo list.
- * @KEY_FLAG_TODO_HWACCEL_ADD: Key needs to be added to hardware acceleration.
- * @KEY_FLAG_TODO_HWACCEL_REMOVE: Key needs to be removed from hardware
- * acceleration.
- * @KEY_FLAG_TODO_DEFKEY: Key is default key and debugfs needs to be updated.
- * @KEY_FLAG_TODO_ADD_DEBUGFS: Key needs to be added to debugfs.
- * @KEY_FLAG_TODO_DEFMGMTKEY: Key is default management key and debugfs needs
- * to be updated.
*/
enum ieee80211_internal_key_flags {
KEY_FLAG_UPLOADED_TO_HARDWARE = BIT(0),
- KEY_FLAG_TODO_DELETE = BIT(1),
- KEY_FLAG_TODO_HWACCEL_ADD = BIT(2),
- KEY_FLAG_TODO_HWACCEL_REMOVE = BIT(3),
- KEY_FLAG_TODO_DEFKEY = BIT(4),
- KEY_FLAG_TODO_ADD_DEBUGFS = BIT(5),
- KEY_FLAG_TODO_DEFMGMTKEY = BIT(6),
};
enum ieee80211_internal_tkip_state {
@@ -79,10 +63,8 @@ struct ieee80211_key {
/* for sdata list */
struct list_head list;
- /* for todo list */
- struct list_head todo;
- /* protected by todo lock! */
+ /* protected by key mutex */
unsigned int flags;
union {
@@ -155,6 +137,4 @@ void ieee80211_free_keys(struct ieee80211_sub_if_data *sdata);
void ieee80211_enable_keys(struct ieee80211_sub_if_data *sdata);
void ieee80211_disable_keys(struct ieee80211_sub_if_data *sdata);
-void ieee80211_key_todo(void);
-
#endif /* IEEE80211_KEY_H */
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 22a384dfab6..5706156d1ec 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -329,6 +329,60 @@ static void ieee80211_recalc_smps_work(struct work_struct *work)
mutex_unlock(&local->iflist_mtx);
}
+#ifdef CONFIG_INET
+int ieee80211_set_arp_filter(struct ieee80211_sub_if_data *sdata)
+{
+ struct in_device *idev;
+ int ret = 0;
+
+ BUG_ON(!sdata);
+ ASSERT_RTNL();
+
+ idev = sdata->dev->ip_ptr;
+ if (!idev)
+ return 0;
+
+ ret = drv_configure_arp_filter(sdata->local, &sdata->vif,
+ idev->ifa_list);
+ return ret;
+}
+
+static int ieee80211_ifa_changed(struct notifier_block *nb,
+ unsigned long data, void *arg)
+{
+ struct in_ifaddr *ifa = arg;
+ struct ieee80211_local *local =
+ container_of(nb, struct ieee80211_local,
+ ifa_notifier);
+ struct net_device *ndev = ifa->ifa_dev->dev;
+ struct wireless_dev *wdev = ndev->ieee80211_ptr;
+ struct ieee80211_sub_if_data *sdata;
+ struct ieee80211_if_managed *ifmgd;
+
+ /* Make sure it's our interface that got changed */
+ if (!wdev)
+ return NOTIFY_DONE;
+
+ if (wdev->wiphy != local->hw.wiphy)
+ return NOTIFY_DONE;
+
+ /* We are concerned about IP addresses only when associated */
+ sdata = IEEE80211_DEV_TO_SUB_IF(ndev);
+
+ /* ARP filtering is only supported in managed mode */
+ if (sdata->vif.type != NL80211_IFTYPE_STATION)
+ return NOTIFY_DONE;
+
+ ifmgd = &sdata->u.mgd;
+ mutex_lock(&ifmgd->mtx);
+ if (ifmgd->associated)
+ ieee80211_set_arp_filter(sdata);
+ mutex_unlock(&ifmgd->mtx);
+
+ return NOTIFY_DONE;
+}
+#endif
+
struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
const struct ieee80211_ops *ops)
{
@@ -396,7 +450,7 @@ struct ieee80211_hw *ieee80211_alloc_hw(size_t priv_data_len,
mutex_init(&local->iflist_mtx);
mutex_init(&local->scan_mtx);
- spin_lock_init(&local->key_lock);
+ mutex_init(&local->key_mtx);
spin_lock_init(&local->filter_lock);
spin_lock_init(&local->queue_stop_reason_lock);
@@ -612,14 +666,24 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
ieee80211_max_network_latency;
result = pm_qos_add_notifier(PM_QOS_NETWORK_LATENCY,
&local->network_latency_notifier);
-
if (result) {
rtnl_lock();
goto fail_pm_qos;
}
+#ifdef CONFIG_INET
+ local->ifa_notifier.notifier_call = ieee80211_ifa_changed;
+ result = register_inetaddr_notifier(&local->ifa_notifier);
+ if (result)
+ goto fail_ifa;
+#endif
+
return 0;
+ fail_ifa:
+ pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
+ &local->network_latency_notifier);
+ rtnl_lock();
fail_pm_qos:
ieee80211_led_exit(local);
ieee80211_remove_interfaces(local);
@@ -647,6 +711,9 @@ void ieee80211_unregister_hw(struct ieee80211_hw *hw)
pm_qos_remove_notifier(PM_QOS_NETWORK_LATENCY,
&local->network_latency_notifier);
+#ifdef CONFIG_INET
+ unregister_inetaddr_notifier(&local->ifa_notifier);
+#endif
rtnl_lock();
@@ -704,6 +771,10 @@ static int __init ieee80211_init(void)
if (ret)
return ret;
+ ret = rc80211_minstrel_ht_init();
+ if (ret)
+ goto err_minstrel;
+
ret = rc80211_pid_init();
if (ret)
goto err_pid;
@@ -716,6 +787,8 @@ static int __init ieee80211_init(void)
err_netdev:
rc80211_pid_exit();
err_pid:
+ rc80211_minstrel_ht_exit();
+ err_minstrel:
rc80211_minstrel_exit();
return ret;
@@ -724,6 +797,7 @@ static int __init ieee80211_init(void)
static void __exit ieee80211_exit(void)
{
rc80211_pid_exit();
+ rc80211_minstrel_ht_exit();
rc80211_minstrel_exit();
/*
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 3310e70aa52..2ab4e86d992 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1801,7 +1801,7 @@ static void ieee80211_sta_work(struct work_struct *work)
/*
* ieee80211_queue_work() should have picked up most cases,
- * here we'll pick the the rest.
+ * here we'll pick the rest.
*/
if (WARN(local->suspended, "STA MLME work scheduled while "
"going to suspend\n"))
@@ -2116,8 +2116,18 @@ static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
cfg80211_send_assoc_timeout(wk->sdata->dev,
wk->filter_ta);
return WORK_DONE_DESTROY;
+ } else {
+ mutex_unlock(&wk->sdata->u.mgd.mtx);
+#ifdef CONFIG_INET
+ /*
+ * configure ARP filter IP addresses to the driver,
+ * intentionally outside the mgd mutex.
+ */
+ rtnl_lock();
+ ieee80211_set_arp_filter(wk->sdata);
+ rtnl_unlock();
+#endif
}
- mutex_unlock(&wk->sdata->u.mgd.mtx);
}
cfg80211_send_rx_assoc(wk->sdata->dev, skb->data, skb->len);
@@ -2346,6 +2356,7 @@ int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
int ieee80211_mgd_action(struct ieee80211_sub_if_data *sdata,
struct ieee80211_channel *chan,
enum nl80211_channel_type channel_type,
+ bool channel_type_valid,
const u8 *buf, size_t len, u64 *cookie)
{
struct ieee80211_local *local = sdata->local;
@@ -2353,9 +2364,11 @@ int ieee80211_mgd_action(struct ieee80211_sub_if_data *sdata,
struct sk_buff *skb;
/* Check that we are on the requested channel for transmission */
- if ((chan != local->tmp_channel ||
- channel_type != local->tmp_channel_type) &&
- (chan != local->oper_channel ||
+ if (chan != local->tmp_channel &&
+ chan != local->oper_channel)
+ return -EBUSY;
+ if (channel_type_valid &&
+ (channel_type != local->tmp_channel_type &&
channel_type != local->_oper_channel_type))
return -EBUSY;
diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h
index 065a96190e3..168427b0ffd 100644
--- a/net/mac80211/rate.h
+++ b/net/mac80211/rate.h
@@ -147,5 +147,18 @@ static inline void rc80211_minstrel_exit(void)
}
#endif
+#ifdef CONFIG_MAC80211_RC_MINSTREL_HT
+extern int rc80211_minstrel_ht_init(void);
+extern void rc80211_minstrel_ht_exit(void);
+#else
+static inline int rc80211_minstrel_ht_init(void)
+{
+ return 0;
+}
+static inline void rc80211_minstrel_ht_exit(void)
+{
+}
+#endif
+
#endif /* IEEE80211_RATE_H */
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
new file mode 100644
index 00000000000..c23f08251da
--- /dev/null
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -0,0 +1,824 @@
+/*
+ * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/skbuff.h>
+#include <linux/debugfs.h>
+#include <linux/random.h>
+#include <linux/ieee80211.h>
+#include <net/mac80211.h>
+#include "rate.h"
+#include "rc80211_minstrel.h"
+#include "rc80211_minstrel_ht.h"
+
+#define AVG_PKT_SIZE 1200
+#define SAMPLE_COLUMNS 10
+#define EWMA_LEVEL 75
+
+/* Number of bits for an average sized packet */
+#define MCS_NBITS (AVG_PKT_SIZE << 3)
+
+/* Number of symbols for a packet with (bps) bits per symbol */
+#define MCS_NSYMS(bps) ((MCS_NBITS + (bps) - 1) / (bps))
+
+/* Transmission time for a packet containing (syms) symbols */
+#define MCS_SYMBOL_TIME(sgi, syms) \
+ (sgi ? \
+ ((syms) * 18 + 4) / 5 : /* syms * 3.6 us */ \
+ (syms) << 2 /* syms * 4 us */ \
+ )
+
+/* Transmit duration for the raw data part of an average sized packet */
+#define MCS_DURATION(streams, sgi, bps) MCS_SYMBOL_TIME(sgi, MCS_NSYMS((streams) * (bps)))
+
+/* MCS rate information for an MCS group */
+#define MCS_GROUP(_streams, _sgi, _ht40) { \
+ .streams = _streams, \
+ .flags = \
+ (_sgi ? IEEE80211_TX_RC_SHORT_GI : 0) | \
+ (_ht40 ? IEEE80211_TX_RC_40_MHZ_WIDTH : 0), \
+ .duration = { \
+ MCS_DURATION(_streams, _sgi, _ht40 ? 54 : 26), \
+ MCS_DURATION(_streams, _sgi, _ht40 ? 108 : 52), \
+ MCS_DURATION(_streams, _sgi, _ht40 ? 162 : 78), \
+ MCS_DURATION(_streams, _sgi, _ht40 ? 216 : 104), \
+ MCS_DURATION(_streams, _sgi, _ht40 ? 324 : 156), \
+ MCS_DURATION(_streams, _sgi, _ht40 ? 432 : 208), \
+ MCS_DURATION(_streams, _sgi, _ht40 ? 486 : 234), \
+ MCS_DURATION(_streams, _sgi, _ht40 ? 540 : 260) \
+ } \
+}
+
+/*
+ * To enable sufficiently targeted rate sampling, MCS rates are divided into
+ * groups, based on the number of streams and flags (HT40, SGI) that they
+ * use.
+ */
+const struct mcs_group minstrel_mcs_groups[] = {
+ MCS_GROUP(1, 0, 0),
+ MCS_GROUP(2, 0, 0),
+#if MINSTREL_MAX_STREAMS >= 3
+ MCS_GROUP(3, 0, 0),
+#endif
+
+ MCS_GROUP(1, 1, 0),
+ MCS_GROUP(2, 1, 0),
+#if MINSTREL_MAX_STREAMS >= 3
+ MCS_GROUP(3, 1, 0),
+#endif
+
+ MCS_GROUP(1, 0, 1),
+ MCS_GROUP(2, 0, 1),
+#if MINSTREL_MAX_STREAMS >= 3
+ MCS_GROUP(3, 0, 1),
+#endif
+
+ MCS_GROUP(1, 1, 1),
+ MCS_GROUP(2, 1, 1),
+#if MINSTREL_MAX_STREAMS >= 3
+ MCS_GROUP(3, 1, 1),
+#endif
+};
+
+static u8 sample_table[SAMPLE_COLUMNS][MCS_GROUP_RATES];
+
+/*
+ * Perform EWMA (Exponentially Weighted Moving Average) calculation
+ */
+static int
+minstrel_ewma(int old, int new, int weight)
+{
+ return (new * (100 - weight) + old * weight) / 100;
+}
+
+/*
+ * Look up an MCS group index based on mac80211 rate information
+ */
+static int
+minstrel_ht_get_group_idx(struct ieee80211_tx_rate *rate)
+{
+ int streams = (rate->idx / MCS_GROUP_RATES) + 1;
+ u32 flags = IEEE80211_TX_RC_SHORT_GI | IEEE80211_TX_RC_40_MHZ_WIDTH;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(minstrel_mcs_groups); i++) {
+ if (minstrel_mcs_groups[i].streams != streams)
+ continue;
+ if (minstrel_mcs_groups[i].flags != (rate->flags & flags))
+ continue;
+
+ return i;
+ }
+
+ WARN_ON(1);
+ return 0;
+}
+
+static inline struct minstrel_rate_stats *
+minstrel_get_ratestats(struct minstrel_ht_sta *mi, int index)
+{
+ return &mi->groups[index / MCS_GROUP_RATES].rates[index % MCS_GROUP_RATES];
+}
+
+
+/*
+ * Recalculate success probabilities and counters for a rate using EWMA
+ */
+static void
+minstrel_calc_rate_ewma(struct minstrel_priv *mp, struct minstrel_rate_stats *mr)
+{
+ if (unlikely(mr->attempts > 0)) {
+ mr->sample_skipped = 0;
+ mr->cur_prob = MINSTREL_FRAC(mr->success, mr->attempts);
+ if (!mr->att_hist)
+ mr->probability = mr->cur_prob;
+ else
+ mr->probability = minstrel_ewma(mr->probability,
+ mr->cur_prob, EWMA_LEVEL);
+ mr->att_hist += mr->attempts;
+ mr->succ_hist += mr->success;
+ } else {
+ mr->sample_skipped++;
+ }
+ mr->last_success = mr->success;
+ mr->last_attempts = mr->attempts;
+ mr->success = 0;
+ mr->attempts = 0;
+}
+
+/*
+ * Calculate throughput based on the average A-MPDU length, taking into account
+ * the expected number of retransmissions and their expected length
+ */
+static void
+minstrel_ht_calc_tp(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
+ int group, int rate)
+{
+ struct minstrel_rate_stats *mr;
+ unsigned int usecs;
+
+ mr = &mi->groups[group].rates[rate];
+
+ if (mr->probability < MINSTREL_FRAC(1, 10)) {
+ mr->cur_tp = 0;
+ return;
+ }
+
+ usecs = mi->overhead / MINSTREL_TRUNC(mi->avg_ampdu_len);
+ usecs += minstrel_mcs_groups[group].duration[rate];
+ mr->cur_tp = MINSTREL_TRUNC((1000000 / usecs) * mr->probability);
+}
+
+/*
+ * Update rate statistics and select new primary rates
+ *
+ * Rules for rate selection:
+ * - max_prob_rate must use only one stream, as a tradeoff between delivery
+ * probability and throughput during strong fluctuations
+ * - as long as the max prob rate has a probability of more than 3/4, pick
+ * higher throughput rates, even if the probablity is a bit lower
+ */
+static void
+minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
+{
+ struct minstrel_mcs_group_data *mg;
+ struct minstrel_rate_stats *mr;
+ int cur_prob, cur_prob_tp, cur_tp, cur_tp2;
+ int group, i, index;
+
+ if (mi->ampdu_packets > 0) {
+ mi->avg_ampdu_len = minstrel_ewma(mi->avg_ampdu_len,
+ MINSTREL_FRAC(mi->ampdu_len, mi->ampdu_packets), EWMA_LEVEL);
+ mi->ampdu_len = 0;
+ mi->ampdu_packets = 0;
+ }
+
+ mi->sample_slow = 0;
+ mi->sample_count = 0;
+ mi->max_tp_rate = 0;
+ mi->max_tp_rate2 = 0;
+ mi->max_prob_rate = 0;
+
+ for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) {
+ cur_prob = 0;
+ cur_prob_tp = 0;
+ cur_tp = 0;
+ cur_tp2 = 0;
+
+ mg = &mi->groups[group];
+ if (!mg->supported)
+ continue;
+
+ mg->max_tp_rate = 0;
+ mg->max_tp_rate2 = 0;
+ mg->max_prob_rate = 0;
+ mi->sample_count++;
+
+ for (i = 0; i < MCS_GROUP_RATES; i++) {
+ if (!(mg->supported & BIT(i)))
+ continue;
+
+ mr = &mg->rates[i];
+ mr->retry_updated = false;
+ index = MCS_GROUP_RATES * group + i;
+ minstrel_calc_rate_ewma(mp, mr);
+ minstrel_ht_calc_tp(mp, mi, group, i);
+
+ if (!mr->cur_tp)
+ continue;
+
+ /* ignore the lowest rate of each single-stream group */
+ if (!i && minstrel_mcs_groups[group].streams == 1)
+ continue;
+
+ if ((mr->cur_tp > cur_prob_tp && mr->probability >
+ MINSTREL_FRAC(3, 4)) || mr->probability > cur_prob) {
+ mg->max_prob_rate = index;
+ cur_prob = mr->probability;
+ }
+
+ if (mr->cur_tp > cur_tp) {
+ swap(index, mg->max_tp_rate);
+ cur_tp = mr->cur_tp;
+ mr = minstrel_get_ratestats(mi, index);
+ }
+
+ if (index >= mg->max_tp_rate)
+ continue;
+
+ if (mr->cur_tp > cur_tp2) {
+ mg->max_tp_rate2 = index;
+ cur_tp2 = mr->cur_tp;
+ }
+ }
+ }
+
+ /* try to sample up to half of the availble rates during each interval */
+ mi->sample_count *= 4;
+
+ cur_prob = 0;
+ cur_prob_tp = 0;
+ cur_tp = 0;
+ cur_tp2 = 0;
+ for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) {
+ mg = &mi->groups[group];
+ if (!mg->supported)
+ continue;
+
+ mr = minstrel_get_ratestats(mi, mg->max_prob_rate);
+ if (cur_prob_tp < mr->cur_tp &&
+ minstrel_mcs_groups[group].streams == 1) {
+ mi->max_prob_rate = mg->max_prob_rate;
+ cur_prob = mr->cur_prob;
+ }
+
+ mr = minstrel_get_ratestats(mi, mg->max_tp_rate);
+ if (cur_tp < mr->cur_tp) {
+ mi->max_tp_rate = mg->max_tp_rate;
+ cur_tp = mr->cur_tp;
+ }
+
+ mr = minstrel_get_ratestats(mi, mg->max_tp_rate2);
+ if (cur_tp2 < mr->cur_tp) {
+ mi->max_tp_rate2 = mg->max_tp_rate2;
+ cur_tp2 = mr->cur_tp;
+ }
+ }
+
+ mi->stats_update = jiffies;
+}
+
+static bool
+minstrel_ht_txstat_valid(struct ieee80211_tx_rate *rate)
+{
+ if (!rate->count)
+ return false;
+
+ if (rate->idx < 0)
+ return false;
+
+ return !!(rate->flags & IEEE80211_TX_RC_MCS);
+}
+
+static void
+minstrel_next_sample_idx(struct minstrel_ht_sta *mi)
+{
+ struct minstrel_mcs_group_data *mg;
+
+ for (;;) {
+ mi->sample_group++;
+ mi->sample_group %= ARRAY_SIZE(minstrel_mcs_groups);
+ mg = &mi->groups[mi->sample_group];
+
+ if (!mg->supported)
+ continue;
+
+ if (++mg->index >= MCS_GROUP_RATES) {
+ mg->index = 0;
+ if (++mg->column >= ARRAY_SIZE(sample_table))
+ mg->column = 0;
+ }
+ break;
+ }
+}
+
+static void
+minstrel_downgrade_rate(struct minstrel_ht_sta *mi, int *idx, bool primary)
+{
+ int group, orig_group;
+
+ orig_group = group = *idx / MCS_GROUP_RATES;
+ while (group > 0) {
+ group--;
+
+ if (!mi->groups[group].supported)
+ continue;
+
+ if (minstrel_mcs_groups[group].streams >
+ minstrel_mcs_groups[orig_group].streams)
+ continue;
+
+ if (primary)
+ *idx = mi->groups[group].max_tp_rate;
+ else
+ *idx = mi->groups[group].max_tp_rate2;
+ break;
+ }
+}
+
+static void
+minstrel_aggr_check(struct minstrel_priv *mp, struct ieee80211_sta *pubsta, struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
+ u16 tid;
+
+ if (unlikely(!ieee80211_is_data_qos(hdr->frame_control)))
+ return;
+
+ if (unlikely(skb->protocol == cpu_to_be16(ETH_P_PAE)))
+ return;
+
+ tid = *ieee80211_get_qos_ctl(hdr) & IEEE80211_QOS_CTL_TID_MASK;
+ if (likely(sta->ampdu_mlme.tid_state_tx[tid] != HT_AGG_STATE_IDLE))
+ return;
+
+ ieee80211_start_tx_ba_session(pubsta, tid);
+}
+
+static void
+minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
+ struct ieee80211_sta *sta, void *priv_sta,
+ struct sk_buff *skb)
+{
+ struct minstrel_ht_sta_priv *msp = priv_sta;
+ struct minstrel_ht_sta *mi = &msp->ht;
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_tx_rate *ar = info->status.rates;
+ struct minstrel_rate_stats *rate, *rate2;
+ struct minstrel_priv *mp = priv;
+ bool last = false;
+ int group;
+ int i = 0;
+
+ if (!msp->is_ht)
+ return mac80211_minstrel.tx_status(priv, sband, sta, &msp->legacy, skb);
+
+ /* This packet was aggregated but doesn't carry status info */
+ if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
+ !(info->flags & IEEE80211_TX_STAT_AMPDU))
+ return;
+
+ if (!info->status.ampdu_len) {
+ info->status.ampdu_ack_len = 1;
+ info->status.ampdu_len = 1;
+ }
+
+ mi->ampdu_packets++;
+ mi->ampdu_len += info->status.ampdu_len;
+
+ if (!mi->sample_wait && !mi->sample_tries && mi->sample_count > 0) {
+ mi->sample_wait = 4 + 2 * MINSTREL_TRUNC(mi->avg_ampdu_len);
+ mi->sample_tries = 3;
+ mi->sample_count--;
+ }
+
+ if (info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) {
+ mi->sample_packets += info->status.ampdu_len;
+ minstrel_next_sample_idx(mi);
+ }
+
+ for (i = 0; !last; i++) {
+ last = (i == IEEE80211_TX_MAX_RATES - 1) ||
+ !minstrel_ht_txstat_valid(&ar[i + 1]);
+
+ if (!minstrel_ht_txstat_valid(&ar[i]))
+ break;
+
+ group = minstrel_ht_get_group_idx(&ar[i]);
+ rate = &mi->groups[group].rates[ar[i].idx % 8];
+
+ if (last && (info->flags & IEEE80211_TX_STAT_ACK))
+ rate->success += info->status.ampdu_ack_len;
+
+ rate->attempts += ar[i].count * info->status.ampdu_len;
+ }
+
+ /*
+ * check for sudden death of spatial multiplexing,
+ * downgrade to a lower number of streams if necessary.
+ */
+ rate = minstrel_get_ratestats(mi, mi->max_tp_rate);
+ if (rate->attempts > 30 &&
+ MINSTREL_FRAC(rate->success, rate->attempts) <
+ MINSTREL_FRAC(20, 100))
+ minstrel_downgrade_rate(mi, &mi->max_tp_rate, true);
+
+ rate2 = minstrel_get_ratestats(mi, mi->max_tp_rate2);
+ if (rate->attempts > 30 &&
+ MINSTREL_FRAC(rate->success, rate->attempts) <
+ MINSTREL_FRAC(20, 100))
+ minstrel_downgrade_rate(mi, &mi->max_tp_rate2, false);
+
+ if (time_after(jiffies, mi->stats_update + (mp->update_interval / 2 * HZ) / 1000)) {
+ minstrel_ht_update_stats(mp, mi);
+ minstrel_aggr_check(mp, sta, skb);
+ }
+}
+
+static void
+minstrel_calc_retransmit(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
+ int index)
+{
+ struct minstrel_rate_stats *mr;
+ const struct mcs_group *group;
+ unsigned int tx_time, tx_time_rtscts, tx_time_data;
+ unsigned int cw = mp->cw_min;
+ unsigned int t_slot = 9; /* FIXME */
+ unsigned int ampdu_len = MINSTREL_TRUNC(mi->avg_ampdu_len);
+
+ mr = minstrel_get_ratestats(mi, index);
+ if (mr->probability < MINSTREL_FRAC(1, 10)) {
+ mr->retry_count = 1;
+ mr->retry_count_rtscts = 1;
+ return;
+ }
+
+ mr->retry_count = 2;
+ mr->retry_count_rtscts = 2;
+ mr->retry_updated = true;
+
+ group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
+ tx_time_data = group->duration[index % MCS_GROUP_RATES] * ampdu_len;
+ tx_time = 2 * (t_slot + mi->overhead + tx_time_data);
+ tx_time_rtscts = 2 * (t_slot + mi->overhead_rtscts + tx_time_data);
+ do {
+ cw = (cw << 1) | 1;
+ cw = min(cw, mp->cw_max);
+ tx_time += cw + t_slot + mi->overhead;
+ tx_time_rtscts += cw + t_slot + mi->overhead_rtscts;
+ if (tx_time_rtscts < mp->segment_size)
+ mr->retry_count_rtscts++;
+ } while ((tx_time < mp->segment_size) &&
+ (++mr->retry_count < mp->max_retry));
+}
+
+
+static void
+minstrel_ht_set_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
+ struct ieee80211_tx_rate *rate, int index,
+ struct ieee80211_tx_rate_control *txrc,
+ bool sample, bool rtscts)
+{
+ const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
+ struct minstrel_rate_stats *mr;
+
+ mr = minstrel_get_ratestats(mi, index);
+ if (!mr->retry_updated)
+ minstrel_calc_retransmit(mp, mi, index);
+
+ if (mr->probability < MINSTREL_FRAC(20, 100))
+ rate->count = 2;
+ else if (rtscts)
+ rate->count = mr->retry_count_rtscts;
+ else
+ rate->count = mr->retry_count;
+
+ rate->flags = IEEE80211_TX_RC_MCS | group->flags;
+ if (txrc->short_preamble)
+ rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
+ if (txrc->rts || rtscts)
+ rate->flags |= IEEE80211_TX_RC_USE_RTS_CTS;
+ rate->idx = index % MCS_GROUP_RATES + (group->streams - 1) * MCS_GROUP_RATES;
+}
+
+static inline int
+minstrel_get_duration(int index)
+{
+ const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
+ return group->duration[index % MCS_GROUP_RATES];
+}
+
+static int
+minstrel_get_sample_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
+{
+ struct minstrel_rate_stats *mr;
+ struct minstrel_mcs_group_data *mg;
+ int sample_idx = 0;
+
+ if (mi->sample_wait > 0) {
+ mi->sample_wait--;
+ return -1;
+ }
+
+ if (!mi->sample_tries)
+ return -1;
+
+ mi->sample_tries--;
+ mg = &mi->groups[mi->sample_group];
+ sample_idx = sample_table[mg->column][mg->index];
+ mr = &mg->rates[sample_idx];
+ sample_idx += mi->sample_group * MCS_GROUP_RATES;
+
+ /*
+ * When not using MRR, do not sample if the probability is already
+ * higher than 95% to avoid wasting airtime
+ */
+ if (!mp->has_mrr && (mr->probability > MINSTREL_FRAC(95, 100)))
+ goto next;
+
+ /*
+ * Make sure that lower rates get sampled only occasionally,
+ * if the link is working perfectly.
+ */
+ if (minstrel_get_duration(sample_idx) >
+ minstrel_get_duration(mi->max_tp_rate)) {
+ if (mr->sample_skipped < 10)
+ goto next;
+
+ if (mi->sample_slow++ > 2)
+ goto next;
+ }
+
+ return sample_idx;
+
+next:
+ minstrel_next_sample_idx(mi);
+ return -1;
+}
+
+static void
+minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
+ struct ieee80211_tx_rate_control *txrc)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(txrc->skb);
+ struct ieee80211_tx_rate *ar = info->status.rates;
+ struct minstrel_ht_sta_priv *msp = priv_sta;
+ struct minstrel_ht_sta *mi = &msp->ht;
+ struct minstrel_priv *mp = priv;
+ int sample_idx;
+
+ if (rate_control_send_low(sta, priv_sta, txrc))
+ return;
+
+ if (!msp->is_ht)
+ return mac80211_minstrel.get_rate(priv, sta, &msp->legacy, txrc);
+
+ info->flags |= mi->tx_flags;
+ sample_idx = minstrel_get_sample_rate(mp, mi);
+ if (sample_idx >= 0) {
+ minstrel_ht_set_rate(mp, mi, &ar[0], sample_idx,
+ txrc, true, false);
+ minstrel_ht_set_rate(mp, mi, &ar[1], mi->max_tp_rate,
+ txrc, false, true);
+ info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
+ } else {
+ minstrel_ht_set_rate(mp, mi, &ar[0], mi->max_tp_rate,
+ txrc, false, false);
+ minstrel_ht_set_rate(mp, mi, &ar[1], mi->max_tp_rate2,
+ txrc, false, true);
+ }
+ minstrel_ht_set_rate(mp, mi, &ar[2], mi->max_prob_rate, txrc, false, true);
+
+ ar[3].count = 0;
+ ar[3].idx = -1;
+
+ mi->total_packets++;
+
+ /* wraparound */
+ if (mi->total_packets == ~0) {
+ mi->total_packets = 0;
+ mi->sample_packets = 0;
+ }
+}
+
+static void
+minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
+ struct ieee80211_sta *sta, void *priv_sta,
+ enum nl80211_channel_type oper_chan_type)
+{
+ struct minstrel_priv *mp = priv;
+ struct minstrel_ht_sta_priv *msp = priv_sta;
+ struct minstrel_ht_sta *mi = &msp->ht;
+ struct ieee80211_mcs_info *mcs = &sta->ht_cap.mcs;
+ struct ieee80211_local *local = hw_to_local(mp->hw);
+ u16 sta_cap = sta->ht_cap.cap;
+ int ack_dur;
+ int stbc;
+ int i;
+
+ /* fall back to the old minstrel for legacy stations */
+ if (sta && !sta->ht_cap.ht_supported) {
+ msp->is_ht = false;
+ memset(&msp->legacy, 0, sizeof(msp->legacy));
+ msp->legacy.r = msp->ratelist;
+ msp->legacy.sample_table = msp->sample_table;
+ return mac80211_minstrel.rate_init(priv, sband, sta, &msp->legacy);
+ }
+
+ BUILD_BUG_ON(ARRAY_SIZE(minstrel_mcs_groups) !=
+ MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS);
+
+ msp->is_ht = true;
+ memset(mi, 0, sizeof(*mi));
+ mi->stats_update = jiffies;
+
+ ack_dur = ieee80211_frame_duration(local, 10, 60, 1, 1);
+ mi->overhead = ieee80211_frame_duration(local, 0, 60, 1, 1) + ack_dur;
+ mi->overhead_rtscts = mi->overhead + 2 * ack_dur;
+
+ mi->avg_ampdu_len = MINSTREL_FRAC(1, 1);
+
+ /* When using MRR, sample more on the first attempt, without delay */
+ if (mp->has_mrr) {
+ mi->sample_count = 16;
+ mi->sample_wait = 0;
+ } else {
+ mi->sample_count = 8;
+ mi->sample_wait = 8;
+ }
+ mi->sample_tries = 4;
+
+ stbc = (sta_cap & IEEE80211_HT_CAP_RX_STBC) >>
+ IEEE80211_HT_CAP_RX_STBC_SHIFT;
+ mi->tx_flags |= stbc << IEEE80211_TX_CTL_STBC_SHIFT;
+
+ if (sta_cap & IEEE80211_HT_CAP_LDPC_CODING)
+ mi->tx_flags |= IEEE80211_TX_CTL_LDPC;
+
+ if (oper_chan_type != NL80211_CHAN_HT40MINUS &&
+ oper_chan_type != NL80211_CHAN_HT40PLUS)
+ sta_cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+
+ for (i = 0; i < ARRAY_SIZE(mi->groups); i++) {
+ u16 req = 0;
+
+ mi->groups[i].supported = 0;
+ if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_SHORT_GI) {
+ if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
+ req |= IEEE80211_HT_CAP_SGI_40;
+ else
+ req |= IEEE80211_HT_CAP_SGI_20;
+ }
+
+ if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
+ req |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+
+ if ((sta_cap & req) != req)
+ continue;
+
+ mi->groups[i].supported =
+ mcs->rx_mask[minstrel_mcs_groups[i].streams - 1];
+ }
+}
+
+static void
+minstrel_ht_rate_init(void *priv, struct ieee80211_supported_band *sband,
+ struct ieee80211_sta *sta, void *priv_sta)
+{
+ struct minstrel_priv *mp = priv;
+
+ minstrel_ht_update_caps(priv, sband, sta, priv_sta, mp->hw->conf.channel_type);
+}
+
+static void
+minstrel_ht_rate_update(void *priv, struct ieee80211_supported_band *sband,
+ struct ieee80211_sta *sta, void *priv_sta,
+ u32 changed, enum nl80211_channel_type oper_chan_type)
+{
+ minstrel_ht_update_caps(priv, sband, sta, priv_sta, oper_chan_type);
+}
+
+static void *
+minstrel_ht_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
+{
+ struct ieee80211_supported_band *sband;
+ struct minstrel_ht_sta_priv *msp;
+ struct minstrel_priv *mp = priv;
+ struct ieee80211_hw *hw = mp->hw;
+ int max_rates = 0;
+ int i;
+
+ for (i = 0; i < IEEE80211_NUM_BANDS; i++) {
+ sband = hw->wiphy->bands[i];
+ if (sband && sband->n_bitrates > max_rates)
+ max_rates = sband->n_bitrates;
+ }
+
+ msp = kzalloc(sizeof(struct minstrel_ht_sta), gfp);
+ if (!msp)
+ return NULL;
+
+ msp->ratelist = kzalloc(sizeof(struct minstrel_rate) * max_rates, gfp);
+ if (!msp->ratelist)
+ goto error;
+
+ msp->sample_table = kmalloc(SAMPLE_COLUMNS * max_rates, gfp);
+ if (!msp->sample_table)
+ goto error1;
+
+ return msp;
+
+error1:
+ kfree(msp->sample_table);
+error:
+ kfree(msp);
+ return NULL;
+}
+
+static void
+minstrel_ht_free_sta(void *priv, struct ieee80211_sta *sta, void *priv_sta)
+{
+ struct minstrel_ht_sta_priv *msp = priv_sta;
+
+ kfree(msp->sample_table);
+ kfree(msp->ratelist);
+ kfree(msp);
+}
+
+static void *
+minstrel_ht_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
+{
+ return mac80211_minstrel.alloc(hw, debugfsdir);
+}
+
+static void
+minstrel_ht_free(void *priv)
+{
+ mac80211_minstrel.free(priv);
+}
+
+static struct rate_control_ops mac80211_minstrel_ht = {
+ .name = "minstrel_ht",
+ .tx_status = minstrel_ht_tx_status,
+ .get_rate = minstrel_ht_get_rate,
+ .rate_init = minstrel_ht_rate_init,
+ .rate_update = minstrel_ht_rate_update,
+ .alloc_sta = minstrel_ht_alloc_sta,
+ .free_sta = minstrel_ht_free_sta,
+ .alloc = minstrel_ht_alloc,
+ .free = minstrel_ht_free,
+#ifdef CONFIG_MAC80211_DEBUGFS
+ .add_sta_debugfs = minstrel_ht_add_sta_debugfs,
+ .remove_sta_debugfs = minstrel_ht_remove_sta_debugfs,
+#endif
+};
+
+
+static void
+init_sample_table(void)
+{
+ int col, i, new_idx;
+ u8 rnd[MCS_GROUP_RATES];
+
+ memset(sample_table, 0xff, sizeof(sample_table));
+ for (col = 0; col < SAMPLE_COLUMNS; col++) {
+ for (i = 0; i < MCS_GROUP_RATES; i++) {
+ get_random_bytes(rnd, sizeof(rnd));
+ new_idx = (i + rnd[i]) % MCS_GROUP_RATES;
+
+ while (sample_table[col][new_idx] != 0xff)
+ new_idx = (new_idx + 1) % MCS_GROUP_RATES;
+
+ sample_table[col][new_idx] = i;
+ }
+ }
+}
+
+int __init
+rc80211_minstrel_ht_init(void)
+{
+ init_sample_table();
+ return ieee80211_rate_control_register(&mac80211_minstrel_ht);
+}
+
+void
+rc80211_minstrel_ht_exit(void)
+{
+ ieee80211_rate_control_unregister(&mac80211_minstrel_ht);
+}
diff --git a/net/mac80211/rc80211_minstrel_ht.h b/net/mac80211/rc80211_minstrel_ht.h
new file mode 100644
index 00000000000..696c0fc6e0b
--- /dev/null
+++ b/net/mac80211/rc80211_minstrel_ht.h
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __RC_MINSTREL_HT_H
+#define __RC_MINSTREL_HT_H
+
+/*
+ * The number of streams can be changed to 2 to reduce code
+ * size and memory footprint.
+ */
+#define MINSTREL_MAX_STREAMS 3
+#define MINSTREL_STREAM_GROUPS 4
+
+/* scaled fraction values */
+#define MINSTREL_SCALE 16
+#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div)
+#define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE)
+
+#define MCS_GROUP_RATES 8
+
+struct mcs_group {
+ u32 flags;
+ unsigned int streams;
+ unsigned int duration[MCS_GROUP_RATES];
+};
+
+struct minstrel_rate_stats {
+ /* current / last sampling period attempts/success counters */
+ unsigned int attempts, last_attempts;
+ unsigned int success, last_success;
+
+ /* total attempts/success counters */
+ u64 att_hist, succ_hist;
+
+ /* current throughput */
+ unsigned int cur_tp;
+
+ /* packet delivery probabilities */
+ unsigned int cur_prob, probability;
+
+ /* maximum retry counts */
+ unsigned int retry_count;
+ unsigned int retry_count_rtscts;
+
+ bool retry_updated;
+ u8 sample_skipped;
+};
+
+struct minstrel_mcs_group_data {
+ u8 index;
+ u8 column;
+
+ /* bitfield of supported MCS rates of this group */
+ u8 supported;
+
+ /* selected primary rates */
+ unsigned int max_tp_rate;
+ unsigned int max_tp_rate2;
+ unsigned int max_prob_rate;
+
+ /* MCS rate statistics */
+ struct minstrel_rate_stats rates[MCS_GROUP_RATES];
+};
+
+struct minstrel_ht_sta {
+ /* ampdu length (average, per sampling interval) */
+ unsigned int ampdu_len;
+ unsigned int ampdu_packets;
+
+ /* ampdu length (EWMA) */
+ unsigned int avg_ampdu_len;
+
+ /* best throughput rate */
+ unsigned int max_tp_rate;
+
+ /* second best throughput rate */
+ unsigned int max_tp_rate2;
+
+ /* best probability rate */
+ unsigned int max_prob_rate;
+
+ /* time of last status update */
+ unsigned long stats_update;
+
+ /* overhead time in usec for each frame */
+ unsigned int overhead;
+ unsigned int overhead_rtscts;
+
+ unsigned int total_packets;
+ unsigned int sample_packets;
+
+ /* tx flags to add for frames for this sta */
+ u32 tx_flags;
+
+ u8 sample_wait;
+ u8 sample_tries;
+ u8 sample_count;
+ u8 sample_slow;
+
+ /* current MCS group to be sampled */
+ u8 sample_group;
+
+ /* MCS rate group info and statistics */
+ struct minstrel_mcs_group_data groups[MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS];
+};
+
+struct minstrel_ht_sta_priv {
+ union {
+ struct minstrel_ht_sta ht;
+ struct minstrel_sta_info legacy;
+ };
+#ifdef CONFIG_MAC80211_DEBUGFS
+ struct dentry *dbg_stats;
+#endif
+ void *ratelist;
+ void *sample_table;
+ bool is_ht;
+};
+
+void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
+void minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta);
+
+#endif
diff --git a/net/mac80211/rc80211_minstrel_ht_debugfs.c b/net/mac80211/rc80211_minstrel_ht_debugfs.c
new file mode 100644
index 00000000000..4fb3ccbd8b4
--- /dev/null
+++ b/net/mac80211/rc80211_minstrel_ht_debugfs.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2010 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/netdevice.h>
+#include <linux/types.h>
+#include <linux/skbuff.h>
+#include <linux/debugfs.h>
+#include <linux/ieee80211.h>
+#include <net/mac80211.h>
+#include "rc80211_minstrel.h"
+#include "rc80211_minstrel_ht.h"
+
+extern const struct mcs_group minstrel_mcs_groups[];
+
+static int
+minstrel_ht_stats_open(struct inode *inode, struct file *file)
+{
+ struct minstrel_ht_sta_priv *msp = inode->i_private;
+ struct minstrel_ht_sta *mi = &msp->ht;
+ struct minstrel_debugfs_info *ms;
+ unsigned int i, j, tp, prob, eprob;
+ char *p;
+ int ret;
+
+ if (!msp->is_ht) {
+ inode->i_private = &msp->legacy;
+ ret = minstrel_stats_open(inode, file);
+ inode->i_private = msp;
+ return ret;
+ }
+
+ ms = kmalloc(sizeof(*ms) + 8192, GFP_KERNEL);
+ if (!ms)
+ return -ENOMEM;
+
+ file->private_data = ms;
+ p = ms->buf;
+ p += sprintf(p, "type rate throughput ewma prob this prob "
+ "this succ/attempt success attempts\n");
+ for (i = 0; i < MINSTREL_MAX_STREAMS * MINSTREL_STREAM_GROUPS; i++) {
+ char htmode = '2';
+ char gimode = 'L';
+
+ if (!mi->groups[i].supported)
+ continue;
+
+ if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
+ htmode = '4';
+ if (minstrel_mcs_groups[i].flags & IEEE80211_TX_RC_SHORT_GI)
+ gimode = 'S';
+
+ for (j = 0; j < MCS_GROUP_RATES; j++) {
+ struct minstrel_rate_stats *mr = &mi->groups[i].rates[j];
+ int idx = i * MCS_GROUP_RATES + j;
+
+ if (!(mi->groups[i].supported & BIT(j)))
+ continue;
+
+ p += sprintf(p, "HT%c0/%cGI ", htmode, gimode);
+
+ *(p++) = (idx == mi->max_tp_rate) ? 'T' : ' ';
+ *(p++) = (idx == mi->max_tp_rate2) ? 't' : ' ';
+ *(p++) = (idx == mi->max_prob_rate) ? 'P' : ' ';
+ p += sprintf(p, "MCS%-2u", (minstrel_mcs_groups[i].streams - 1) *
+ MCS_GROUP_RATES + j);
+
+ tp = mr->cur_tp / 10;
+ prob = MINSTREL_TRUNC(mr->cur_prob * 1000);
+ eprob = MINSTREL_TRUNC(mr->probability * 1000);
+
+ p += sprintf(p, " %6u.%1u %6u.%1u %6u.%1u "
+ "%3u(%3u) %8llu %8llu\n",
+ tp / 10, tp % 10,
+ eprob / 10, eprob % 10,
+ prob / 10, prob % 10,
+ mr->last_success,
+ mr->last_attempts,
+ (unsigned long long)mr->succ_hist,
+ (unsigned long long)mr->att_hist);
+ }
+ }
+ p += sprintf(p, "\nTotal packet count:: ideal %d "
+ "lookaround %d\n",
+ max(0, (int) mi->total_packets - (int) mi->sample_packets),
+ mi->sample_packets);
+ p += sprintf(p, "Average A-MPDU length: %d.%d\n",
+ MINSTREL_TRUNC(mi->avg_ampdu_len),
+ MINSTREL_TRUNC(mi->avg_ampdu_len * 10) % 10);
+ ms->len = p - ms->buf;
+
+ return 0;
+}
+
+static const struct file_operations minstrel_ht_stat_fops = {
+ .owner = THIS_MODULE,
+ .open = minstrel_ht_stats_open,
+ .read = minstrel_stats_read,
+ .release = minstrel_stats_release,
+};
+
+void
+minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir)
+{
+ struct minstrel_ht_sta_priv *msp = priv_sta;
+
+ msp->dbg_stats = debugfs_create_file("rc_stats", S_IRUGO, dir, msp,
+ &minstrel_ht_stat_fops);
+}
+
+void
+minstrel_ht_remove_sta_debugfs(void *priv, void *priv_sta)
+{
+ struct minstrel_ht_sta_priv *msp = priv_sta;
+
+ debugfs_remove(msp->dbg_stats);
+}
diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index be9abc2e634..6e7d6d48fe1 100644
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -825,6 +825,7 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
ieee80211_rx_result result = RX_DROP_UNUSABLE;
struct ieee80211_key *stakey = NULL;
int mmie_keyidx = -1;
+ __le16 fc;
/*
* Key selection 101
@@ -866,13 +867,15 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
if (rx->sta)
stakey = rcu_dereference(rx->sta->key);
- if (!ieee80211_has_protected(hdr->frame_control))
+ fc = hdr->frame_control;
+
+ if (!ieee80211_has_protected(fc))
mmie_keyidx = ieee80211_get_mmie_keyidx(rx->skb);
if (!is_multicast_ether_addr(hdr->addr1) && stakey) {
rx->key = stakey;
/* Skip decryption if the frame is not protected. */
- if (!ieee80211_has_protected(hdr->frame_control))
+ if (!ieee80211_has_protected(fc))
return RX_CONTINUE;
} else if (mmie_keyidx >= 0) {
/* Broadcast/multicast robust management frame / BIP */
@@ -884,7 +887,7 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
mmie_keyidx >= NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
return RX_DROP_MONITOR; /* unexpected BIP keyidx */
rx->key = rcu_dereference(rx->sdata->keys[mmie_keyidx]);
- } else if (!ieee80211_has_protected(hdr->frame_control)) {
+ } else if (!ieee80211_has_protected(fc)) {
/*
* The frame was not protected, so skip decryption. However, we
* need to set rx->key if there is a key that could have been
@@ -892,7 +895,7 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
* have been expected.
*/
struct ieee80211_key *key = NULL;
- if (ieee80211_is_mgmt(hdr->frame_control) &&
+ if (ieee80211_is_mgmt(fc) &&
is_multicast_ether_addr(hdr->addr1) &&
(key = rcu_dereference(rx->sdata->default_mgmt_key)))
rx->key = key;
@@ -914,7 +917,7 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
(status->flag & RX_FLAG_IV_STRIPPED))
return RX_CONTINUE;
- hdrlen = ieee80211_hdrlen(hdr->frame_control);
+ hdrlen = ieee80211_hdrlen(fc);
if (rx->skb->len < 8 + hdrlen)
return RX_DROP_UNUSABLE; /* TODO: count this? */
@@ -947,19 +950,17 @@ ieee80211_rx_h_decrypt(struct ieee80211_rx_data *rx)
if (skb_linearize(rx->skb))
return RX_DROP_UNUSABLE;
-
- hdr = (struct ieee80211_hdr *)rx->skb->data;
-
- /* Check for weak IVs if possible */
- if (rx->sta && rx->key->conf.alg == ALG_WEP &&
- ieee80211_is_data(hdr->frame_control) &&
- (!(status->flag & RX_FLAG_IV_STRIPPED) ||
- !(status->flag & RX_FLAG_DECRYPTED)) &&
- ieee80211_wep_is_weak_iv(rx->skb, rx->key))
- rx->sta->wep_weak_iv_count++;
+ /* the hdr variable is invalid now! */
switch (rx->key->conf.alg) {
case ALG_WEP:
+ /* Check for weak IVs if possible */
+ if (rx->sta && ieee80211_is_data(fc) &&
+ (!(status->flag & RX_FLAG_IV_STRIPPED) ||
+ !(status->flag & RX_FLAG_DECRYPTED)) &&
+ ieee80211_wep_is_weak_iv(rx->skb, rx->key))
+ rx->sta->wep_weak_iv_count++;
+
result = ieee80211_crypto_wep_decrypt(rx);
break;
case ALG_TKIP:
@@ -1852,7 +1853,12 @@ ieee80211_rx_h_ctrl(struct ieee80211_rx_data *rx, struct sk_buff_head *frames)
return RX_QUEUED;
}
- return RX_CONTINUE;
+ /*
+ * After this point, we only want management frames,
+ * so we can drop all remaining control frames to
+ * cooked monitor interfaces.
+ */
+ return RX_DROP_MONITOR;
}
static void ieee80211_process_sa_query_req(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 730197591ab..c426c572d98 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -648,14 +648,6 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
if (sta->key) {
ieee80211_key_free(sta->key);
- /*
- * We have only unlinked the key, and actually destroying it
- * may mean it is removed from hardware which requires that
- * the key->sta pointer is still valid, so flush the key todo
- * list here.
- */
- ieee80211_key_todo();
-
WARN_ON(sta->key);
}
diff --git a/net/mac80211/sta_info.h b/net/mac80211/sta_info.h
index df9d45544ca..813da34db73 100644
--- a/net/mac80211/sta_info.h
+++ b/net/mac80211/sta_info.h
@@ -120,6 +120,28 @@ struct tid_ampdu_rx {
};
/**
+ * struct sta_ampdu_mlme - STA aggregation information.
+ *
+ * @tid_active_rx: TID's state in Rx session state machine.
+ * @tid_rx: aggregation info for Rx per TID
+ * @tid_state_tx: TID's state in Tx session state machine.
+ * @tid_tx: aggregation info for Tx per TID
+ * @addba_req_num: number of times addBA request has been sent.
+ * @dialog_token_allocator: dialog token enumerator for each new session;
+ */
+struct sta_ampdu_mlme {
+ /* rx */
+ bool tid_active_rx[STA_TID_NUM];
+ struct tid_ampdu_rx *tid_rx[STA_TID_NUM];
+ /* tx */
+ u8 tid_state_tx[STA_TID_NUM];
+ struct tid_ampdu_tx *tid_tx[STA_TID_NUM];
+ u8 addba_req_num[STA_TID_NUM];
+ u8 dialog_token_allocator;
+};
+
+
+/**
* enum plink_state - state of a mesh peer link finite state machine
*
* @PLINK_LISTEN: initial state, considered the implicit state of non existant
@@ -143,28 +165,6 @@ enum plink_state {
};
/**
- * struct sta_ampdu_mlme - STA aggregation information.
- *
- * @tid_active_rx: TID's state in Rx session state machine.
- * @tid_rx: aggregation info for Rx per TID
- * @tid_state_tx: TID's state in Tx session state machine.
- * @tid_tx: aggregation info for Tx per TID
- * @addba_req_num: number of times addBA request has been sent.
- * @dialog_token_allocator: dialog token enumerator for each new session;
- */
-struct sta_ampdu_mlme {
- /* rx */
- bool tid_active_rx[STA_TID_NUM];
- struct tid_ampdu_rx *tid_rx[STA_TID_NUM];
- /* tx */
- u8 tid_state_tx[STA_TID_NUM];
- struct tid_ampdu_tx *tid_tx[STA_TID_NUM];
- u8 addba_req_num[STA_TID_NUM];
- u8 dialog_token_allocator;
-};
-
-
-/**
* struct sta_info - STA information
*
* This structure collects information about a station that
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 94613af009f..34da67995d9 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -47,7 +47,7 @@ static void ieee80211_handle_filtered_frame(struct ieee80211_local *local,
/*
* This skb 'survived' a round-trip through the driver, and
* hopefully the driver didn't mangle it too badly. However,
- * we can definitely not rely on the the control information
+ * we can definitely not rely on the control information
* being correct. Clear it so we don't get junk there, and
* indicate that it needs new processing, but must not be
* modified/encrypted again.
diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index be3d4a69869..4157717ed78 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -840,7 +840,7 @@ static void ieee80211_work_work(struct work_struct *work)
/*
* ieee80211_queue_work() should have picked up most cases,
- * here we'll pick the the rest.
+ * here we'll pick the rest.
*/
if (WARN(local->suspended, "work scheduled while going to suspend\n"))
return;
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-01 01:41:23 +0000