openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

A handful of fixes: 

* disable AQL on most drivers, addressing the iwlwifi issues
  * fix double-free on network namespace changes
  * fix TID field in frames injected through monitor interfaces
  * fix ieee80211_calc_rx_airtime()
  * fix NULL pointer dereference in rfkill (and remove BUG_ON)
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEH1e1rEeCd0AIMq6MB8qZga/fl8QFAl33THYACgkQB8qZga/f
 l8QSsw/+MW4NiXgjFNIaTfyPocFCLi45Efdizef3D+T2MsAD279DFILLFc4Q08Tt
 kL2CxOaD2lrrrPXTa++vkcaSBBQtgRRFvPQPycwoju9QkTuEQ31wFtXSzeCdSFmx
 vLVaY+gMvPjw6HejWqouPlm1hBaA0jqZOCjwq3IWj0spDR/FwJ0HwXSzzEhUs7FV
 1097Q9i7kLDZjdMvUUVnKi8SyWPL8TMPfXxyGPOsSbMPG5QAYj3odfb7FtsZLYgD
 SwWafp6nroUfEDi3jk+QNEuJB4on6iAVEJxbltDQWqsBXO76CWVAezh9KqiDtzIt
 Ay2YtTyOUTZUTPR8lZnoiTvR0GLzeNybwT5BQ9COO1tCD4yB8y1/cpa8oJxv/YRB
 xekCcNMPDFqIwtrY4UKbTEuyCbf78uVO8cUYdlb4ZUUvLKFP2LiD63InyWAtvCdu
 N21mzausAUzy65j5AJ7IIut7iFrcNEQ2qQtQuECGEqmu9uqHD4S3e9MQYd6Qx429
 uXdWbtyoqnYXMaEhF4Zy+DNz5vELNUkP0Lv9sJ6ihALQSXWXwkiz+p7+eYsdBdZy
 mJslJs+sYCgt0y46xzUfAcwvEdAOGkBeF91gCHSJ7q9g8UCrnZ4SN+OCx93YGnvW
 w1AQgZ7VW2aL4i8lnfu6bd86K04M/AbwdRn2OL6Ug4LmmFvHUT8=
 =tvTq
 -----END PGP SIGNATURE-----

Merge tag 'mac80211-for-net-2019-10-16' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
A handful of fixes:
 * disable AQL on most drivers, addressing the iwlwifi issues
 * fix double-free on network namespace changes
 * fix TID field in frames injected through monitor interfaces
 * fix ieee80211_calc_rx_airtime()
 * fix NULL pointer dereference in rfkill (and remove BUG_ON)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2019-12-16 19:26:11 -08:00
parent 95bed1a9fb 6fc232db9e
commit ad125c6c05
10 changed files with 99 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/net/wireless/ath/ath10k/mac.c
View File

@ -8958,6 +8958,7 @@ int ath10k_mac_register(struct ath10k *ar)
wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_VHT_IBSS);
wiphy_ext_feature_set(ar->hw->wiphy,
NL80211_EXT_FEATURE_SET_SCAN_DWELL);
wiphy_ext_feature_set(ar->hw->wiphy, NL80211_EXT_FEATURE_AQL);
if (test_bit(WMI_SERVICE_TX_DATA_ACK_RSSI, ar->wmi.svc_map) ||
test_bit(WMI_SERVICE_HTT_MGMT_TX_COMP_VALID_FLAGS, ar->wmi.svc_map))

5
include/uapi/linux/nl80211.h
View File

@ -5517,6 +5517,10 @@ enum nl80211_feature_flags {
* with VLAN tagged frames and separate VLAN-specific netdevs added using
* vconfig similarly to the Ethernet case.
*
* @NL80211_EXT_FEATURE_AQL: The driver supports the Airtime Queue Limit (AQL)
* feature, which prevents bufferbloat by using the expected transmission
* time to limit the amount of data buffered in the hardware.
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
*/
@ -5563,6 +5567,7 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_STA_TX_PWR,
NL80211_EXT_FEATURE_SAE_OFFLOAD,
NL80211_EXT_FEATURE_VLAN_OFFLOAD,
NL80211_EXT_FEATURE_AQL,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,

2
net/mac80211/airtime.c
View File

@ -442,7 +442,7 @@ u32 ieee80211_calc_rx_airtime(struct ieee80211_hw *hw,
return 0;
sband = hw->wiphy->bands[status->band];
if (!sband || status->rate_idx > sband->n_bitrates)
if (!sband || status->rate_idx >= sband->n_bitrates)
return 0;
rate = &sband->bitrates[status->rate_idx];

102
net/mac80211/debugfs_sta.c
View File

@ -201,8 +201,6 @@ static ssize_t sta_airtime_read(struct file *file, char __user *userbuf,
char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
u64 rx_airtime = 0, tx_airtime = 0;
s64 deficit[IEEE80211_NUM_ACS];
u32 q_depth[IEEE80211_NUM_ACS];
u32 q_limit_l[IEEE80211_NUM_ACS], q_limit_h[IEEE80211_NUM_ACS];
ssize_t rv;
int ac;
@ -214,22 +212,14 @@ static ssize_t sta_airtime_read(struct file *file, char __user *userbuf,
rx_airtime += sta->airtime[ac].rx_airtime;
tx_airtime += sta->airtime[ac].tx_airtime;
deficit[ac] = sta->airtime[ac].deficit;
q_limit_l[ac] = sta->airtime[ac].aql_limit_low;
q_limit_h[ac] = sta->airtime[ac].aql_limit_high;
spin_unlock_bh(&local->active_txq_lock[ac]);
q_depth[ac] = atomic_read(&sta->airtime[ac].aql_tx_pending);
}
p += scnprintf(p, bufsz + buf - p,
"RX: %llu us\nTX: %llu us\nWeight: %u\n"
"Deficit: VO: %lld us VI: %lld us BE: %lld us BK: %lld us\n"
"Q depth: VO: %u us VI: %u us BE: %u us BK: %u us\n"
"Q limit[low/high]: VO: %u/%u VI: %u/%u BE: %u/%u BK: %u/%u\n",
"Deficit: VO: %lld us VI: %lld us BE: %lld us BK: %lld us\n",
rx_airtime, tx_airtime, sta->airtime_weight,
deficit[0], deficit[1], deficit[2], deficit[3],
q_depth[0], q_depth[1], q_depth[2], q_depth[3],
q_limit_l[0], q_limit_h[0], q_limit_l[1], q_limit_h[1],
q_limit_l[2], q_limit_h[2], q_limit_l[3], q_limit_h[3]),
deficit[0], deficit[1], deficit[2], deficit[3]);
rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
kfree(buf);
@ -241,25 +231,7 @@ static ssize_t sta_airtime_write(struct file *file, const char __user *userbuf,
{
struct sta_info *sta = file->private_data;
struct ieee80211_local *local = sta->sdata->local;
u32 ac, q_limit_l, q_limit_h;
char _buf[100] = {}, *buf = _buf;
if (count > sizeof(_buf))
return -EINVAL;
if (copy_from_user(buf, userbuf, count))
return -EFAULT;
buf[sizeof(_buf) - 1] = '\0';
if (sscanf(buf, "queue limit %u %u %u", &ac, &q_limit_l, &q_limit_h)
!= 3)
return -EINVAL;
if (ac >= IEEE80211_NUM_ACS)
return -EINVAL;
sta->airtime[ac].aql_limit_low = q_limit_l;
sta->airtime[ac].aql_limit_high = q_limit_h;
int ac;
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
spin_lock_bh(&local->active_txq_lock[ac]);
@ -273,6 +245,70 @@ static ssize_t sta_airtime_write(struct file *file, const char __user *userbuf,
}
STA_OPS_RW(airtime);
static ssize_t sta_aql_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
struct sta_info *sta = file->private_data;
struct ieee80211_local *local = sta->sdata->local;
size_t bufsz = 400;
char *buf = kzalloc(bufsz, GFP_KERNEL), *p = buf;
u32 q_depth[IEEE80211_NUM_ACS];
u32 q_limit_l[IEEE80211_NUM_ACS], q_limit_h[IEEE80211_NUM_ACS];
ssize_t rv;
int ac;
if (!buf)
return -ENOMEM;
for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
spin_lock_bh(&local->active_txq_lock[ac]);
q_limit_l[ac] = sta->airtime[ac].aql_limit_low;
q_limit_h[ac] = sta->airtime[ac].aql_limit_high;
spin_unlock_bh(&local->active_txq_lock[ac]);
q_depth[ac] = atomic_read(&sta->airtime[ac].aql_tx_pending);
}
p += scnprintf(p, bufsz + buf - p,
"Q depth: VO: %u us VI: %u us BE: %u us BK: %u us\n"
"Q limit[low/high]: VO: %u/%u VI: %u/%u BE: %u/%u BK: %u/%u\n",
q_depth[0], q_depth[1], q_depth[2], q_depth[3],
q_limit_l[0], q_limit_h[0], q_limit_l[1], q_limit_h[1],
q_limit_l[2], q_limit_h[2], q_limit_l[3], q_limit_h[3]),
rv = simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
kfree(buf);
return rv;
}
static ssize_t sta_aql_write(struct file *file, const char __user *userbuf,
size_t count, loff_t *ppos)
{
struct sta_info *sta = file->private_data;
u32 ac, q_limit_l, q_limit_h;
char _buf[100] = {}, *buf = _buf;
if (count > sizeof(_buf))
return -EINVAL;
if (copy_from_user(buf, userbuf, count))
return -EFAULT;
buf[sizeof(_buf) - 1] = '\0';
if (sscanf(buf, "limit %u %u %u", &ac, &q_limit_l, &q_limit_h)
!= 3)
return -EINVAL;
if (ac >= IEEE80211_NUM_ACS)
return -EINVAL;
sta->airtime[ac].aql_limit_low = q_limit_l;
sta->airtime[ac].aql_limit_high = q_limit_h;
return count;
}
STA_OPS_RW(aql);
static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
size_t count, loff_t *ppos)
{
@ -996,6 +1032,10 @@ void ieee80211_sta_debugfs_add(struct sta_info *sta)
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
DEBUGFS_ADD(airtime);
if (wiphy_ext_feature_isset(local->hw.wiphy,
NL80211_EXT_FEATURE_AQL))
DEBUGFS_ADD(aql);
debugfs_create_xul("driver_buffered_tids", 0400, sta->debugfs_dir,
&sta->driver_buffered_tids);

4
net/mac80211/main.c
View File

@ -672,9 +672,7 @@ struct ieee80211_hw *ieee80211_alloc_hw_nm(size_t priv_data_len,
IEEE80211_DEFAULT_AQL_TXQ_LIMIT_H;
}
local->airtime_flags = AIRTIME_USE_TX |
AIRTIME_USE_RX |
AIRTIME_USE_AQL;
local->airtime_flags = AIRTIME_USE_TX | AIRTIME_USE_RX;
local->aql_threshold = IEEE80211_AQL_THRESHOLD;
atomic_set(&local->aql_total_pending_airtime, 0);

3
net/mac80211/sta_info.c
View File

@ -1916,6 +1916,9 @@ void ieee80211_sta_update_pending_airtime(struct ieee80211_local *local,
{
int tx_pending;
if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL))
return;
if (!tx_completed) {
if (sta)
atomic_add(tx_airtime,

1
net/mac80211/sta_info.h
View File

@ -127,7 +127,6 @@ enum ieee80211_agg_stop_reason {
/* Debugfs flags to enable/disable use of RX/TX airtime in scheduler */
#define AIRTIME_USE_TX BIT(0)
#define AIRTIME_USE_RX BIT(1)
#define AIRTIME_USE_AQL BIT(2)
struct airtime_info {
u64 rx_airtime;

13
net/mac80211/tx.c
View File

@ -2256,6 +2256,15 @@ netdev_tx_t ieee80211_monitor_start_xmit(struct sk_buff *skb,
payload[7]);
}
/*
* Initialize skb->priority for QoS frames. This is put in the TID field
* of the frame before passing it to the driver.
*/
if (ieee80211_is_data_qos(hdr->frame_control)) {
u8 *p = ieee80211_get_qos_ctl(hdr);
skb->priority = *p & IEEE80211_QOS_CTL_TAG1D_MASK;
}
memset(info, 0, sizeof(*info));
info->flags = IEEE80211_TX_CTL_REQ_TX_STATUS |
@ -3668,7 +3677,7 @@ struct sk_buff *ieee80211_tx_dequeue(struct ieee80211_hw *hw,
IEEE80211_SKB_CB(skb)->control.vif = vif;
if (local->airtime_flags & AIRTIME_USE_AQL) {
if (wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL)) {
u32 airtime;
airtime = ieee80211_calc_expected_tx_airtime(hw, vif, txq->sta,
@ -3790,7 +3799,7 @@ bool ieee80211_txq_airtime_check(struct ieee80211_hw *hw,
struct sta_info *sta;
struct ieee80211_local *local = hw_to_local(hw);
if (!(local->airtime_flags & AIRTIME_USE_AQL))
if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL))
return true;
if (!txq->sta)

7
net/rfkill/core.c
View File

@ -1002,10 +1002,13 @@ static void rfkill_sync_work(struct work_struct *work)
int __must_check rfkill_register(struct rfkill *rfkill)
{
static unsigned long rfkill_no;
struct device *dev = &rfkill->dev;
struct device *dev;
int error;
BUG_ON(!rfkill);
if (!rfkill)
return -EINVAL;
dev = &rfkill->dev;
mutex_lock(&rfkill_global_mutex);

1
net/wireless/core.c
View File

@ -1102,6 +1102,7 @@ static void __cfg80211_unregister_wdev(struct wireless_dev *wdev, bool sync)
#ifdef CONFIG_CFG80211_WEXT
kzfree(wdev->wext.keys);
wdev->wext.keys = NULL;
#endif
/* only initialized if we have a netdev */
if (wdev->netdev)