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More updates: 

* many minstrel improvements, including removal of the old
    minstrel in favour of minstrel_ht
  * speed improvements on FQ
  * support for RX decapsulation (header conversion) offload
  * RTNL reduction: limit RTNL usage in the wireless stack
    mostly to where really needed (regulatory not yet) to
    reduce contention on it
  * various other small updates
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Merge tag 'mac80211-next-for-net-next-2021-01-27' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next

Johannes Berg says:

====================
More updates:
 * many minstrel improvements, including removal of the old
   minstrel in favour of minstrel_ht
 * speed improvements on FQ
 * support for RX decapsulation (header conversion) offload
 * RTNL reduction: limit RTNL usage in the wireless stack
   mostly to where really needed (regulatory not yet) to
   reduce contention on it

* tag 'mac80211-next-for-net-next-2021-01-27' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next: (24 commits)
  mac80211: minstrel_ht: fix regression in the max_prob_rate fix
  virt_wifi: fix deadlock on RTNL
  cfg80211: avoid holding the RTNL when calling the driver
  cfg80211: change netdev registration/unregistration semantics
  mac80211: minstrel_ht: fix rounding error in throughput calculation
  mac80211: minstrel_ht: increase stats update interval
  mac80211: minstrel_ht: fix max probability rate selection
  mac80211: minstrel_ht: improve sample rate selection
  mac80211: minstrel_ht: improve ampdu length estimation
  mac80211: minstrel_ht: remove old ewma based rate average code
  mac80211: remove legacy minstrel rate control
  mac80211: minstrel_ht: add support for OFDM rates on non-HT clients
  mac80211: minstrel_ht: clean up CCK code
  mac80211: introduce aql_enable node in debugfs
  cfg80211: Add phyrate conversion support for extended MCS in 60GHz band
  cfg80211: add VHT rate entries for MCS-10 and MCS-11
  mac80211: reduce peer HE MCS/NSS to own capabilities
  mac80211: remove NSS number of 160MHz if not support 160MHz for HE
  mac80211_hwsim: add 6GHz channels
  mac80211: add LDPC encoding to ieee80211_parse_tx_radiotap
  ...
====================

Link: https://lore.kernel.org/r/20210127210915.135550-1-johannes@sipsolutions.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2021-01-27 19:01:06 -08:00
parent df9d80470a d3b9b45f7e
commit 5998dd0217
63 changed files with 2103 additions and 1940 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/net/wireless/ath/ath11k/reg.c
View File

@ -247,7 +247,9 @@ int ath11k_regd_update(struct ath11k *ar, bool init)
}
rtnl_lock();
ret = regulatory_set_wiphy_regd_sync_rtnl(ar->hw->wiphy, regd_copy);
wiphy_lock(ar->hw->wiphy);
ret = regulatory_set_wiphy_regd_sync(ar->hw->wiphy, regd_copy);
wiphy_unlock(ar->hw->wiphy);
rtnl_unlock();
kfree(regd_copy);

4
drivers/net/wireless/ath/ath6kl/cfg80211.c
View File

@ -3648,7 +3648,7 @@ void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif)
kfree(mc_filter);
}
unregister_netdevice(vif->ndev);
cfg80211_unregister_netdevice(vif->ndev);
ar->num_vif--;
}
@ -3821,7 +3821,7 @@ struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name,
netdev_set_default_ethtool_ops(ndev, &ath6kl_ethtool_ops);
if (register_netdevice(ndev))
if (cfg80211_register_netdevice(ndev))
goto err;
ar->avail_idx_map &= ~BIT(fw_vif_idx);

2
drivers/net/wireless/ath/ath6kl/core.c
View File

@ -212,11 +212,13 @@ int ath6kl_core_init(struct ath6kl *ar, enum ath6kl_htc_type htc_type)
ar->avail_idx_map |= BIT(i);
rtnl_lock();
wiphy_lock(ar->wiphy);
/* Add an initial station interface */
wdev = ath6kl_interface_add(ar, "wlan%d", NET_NAME_ENUM,
NL80211_IFTYPE_STATION, 0, INFRA_NETWORK);
wiphy_unlock(ar->wiphy);
rtnl_unlock();
if (!wdev) {

2
drivers/net/wireless/ath/ath6kl/init.c
View File

@ -1904,7 +1904,9 @@ void ath6kl_stop_txrx(struct ath6kl *ar)
spin_unlock_bh(&ar->list_lock);
ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag));
rtnl_lock();
wiphy_lock(ar->wiphy);
ath6kl_cfg80211_vif_cleanup(vif);
wiphy_unlock(ar->wiphy);
rtnl_unlock();
spin_lock_bh(&ar->list_lock);
}

2
drivers/net/wireless/ath/wil6210/cfg80211.c
View File

@ -2820,7 +2820,9 @@ void wil_p2p_wdev_free(struct wil6210_priv *wil)
wil->radio_wdev = wil->main_ndev->ieee80211_ptr;
mutex_unlock(&wil->vif_mutex);
if (p2p_wdev) {
wiphy_lock(wil->wiphy);
cfg80211_unregister_wdev(p2p_wdev);
wiphy_unlock(wil->wiphy);
kfree(p2p_wdev);
}
}

11
drivers/net/wireless/ath/wil6210/netdev.c
View File

@ -424,7 +424,7 @@ int wil_vif_add(struct wil6210_priv *wil, struct wil6210_vif *vif)
if (rc)
return rc;
}
rc = register_netdevice(ndev);
rc = cfg80211_register_netdevice(ndev);
if (rc < 0) {
dev_err(&ndev->dev, "Failed to register netdev: %d\n", rc);
if (any_active && vif->mid != 0)
@ -473,7 +473,9 @@ int wil_if_add(struct wil6210_priv *wil)
wil_update_net_queues_bh(wil, vif, NULL, true);
rtnl_lock();
wiphy_lock(wiphy);
rc = wil_vif_add(wil, vif);
wiphy_unlock(wiphy);
rtnl_unlock();
if (rc < 0)
goto out_wiphy;
@ -511,7 +513,7 @@ void wil_vif_remove(struct wil6210_priv *wil, u8 mid)
/* during unregister_netdevice cfg80211_leave may perform operations
* such as stop AP, disconnect, so we only clear the VIF afterwards
*/
unregister_netdevice(ndev);
cfg80211_unregister_netdevice(ndev);
if (any_active && vif->mid != 0)
wmi_port_delete(wil, vif->mid);
@ -543,15 +545,18 @@ void wil_if_remove(struct wil6210_priv *wil)
{
struct net_device *ndev = wil->main_ndev;
struct wireless_dev *wdev = ndev->ieee80211_ptr;
struct wiphy *wiphy = wdev->wiphy;
wil_dbg_misc(wil, "if_remove\n");
rtnl_lock();
wiphy_lock(wiphy);
wil_vif_remove(wil, 0);
wiphy_unlock(wiphy);
rtnl_unlock();
netif_napi_del(&wil->napi_tx);
netif_napi_del(&wil->napi_rx);
wiphy_unregister(wdev->wiphy);
wiphy_unregister(wiphy);
}

2
drivers/net/wireless/ath/wil6210/pcie_bus.c
View File

@ -473,8 +473,10 @@ static void wil_pcie_remove(struct pci_dev *pdev)
wil6210_debugfs_remove(wil);
rtnl_lock();
wiphy_lock(wil->wiphy);
wil_p2p_wdev_free(wil);
wil_remove_all_additional_vifs(wil);
wiphy_unlock(wil->wiphy);
rtnl_unlock();
wil_if_remove(wil);
wil_if_pcie_disable(wil);

24
drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
View File

@ -633,7 +633,7 @@ static const struct net_device_ops brcmf_netdev_ops_pri = {
.ndo_set_rx_mode = brcmf_netdev_set_multicast_list
};
int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
int brcmf_net_attach(struct brcmf_if *ifp, bool locked)
{
struct brcmf_pub *drvr = ifp->drvr;
struct net_device *ndev;
@ -656,8 +656,8 @@ int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
INIT_WORK(&ifp->multicast_work, _brcmf_set_multicast_list);
INIT_WORK(&ifp->ndoffload_work, _brcmf_update_ndtable);
if (rtnl_locked)
err = register_netdevice(ndev);
if (locked)
err = cfg80211_register_netdevice(ndev);
else
err = register_netdev(ndev);
if (err != 0) {
@ -677,11 +677,11 @@ int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked)
return -EBADE;
}
void brcmf_net_detach(struct net_device *ndev, bool rtnl_locked)
void brcmf_net_detach(struct net_device *ndev, bool locked)
{
if (ndev->reg_state == NETREG_REGISTERED) {
if (rtnl_locked)
unregister_netdevice(ndev);
if (locked)
cfg80211_unregister_netdevice(ndev);
else
unregister_netdev(ndev);
} else {
@ -758,7 +758,7 @@ int brcmf_net_mon_attach(struct brcmf_if *ifp)
ndev = ifp->ndev;
ndev->netdev_ops = &brcmf_netdev_ops_mon;
err = register_netdevice(ndev);
err = cfg80211_register_netdevice(ndev);
if (err)
bphy_err(drvr, "Failed to register %s device\n", ndev->name);
@ -909,7 +909,7 @@ struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx,
}
static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx,
bool rtnl_locked)
bool locked)
{
struct brcmf_if *ifp;
int ifidx;
@ -938,7 +938,7 @@ static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx,
cancel_work_sync(&ifp->multicast_work);
cancel_work_sync(&ifp->ndoffload_work);
}
brcmf_net_detach(ifp->ndev, rtnl_locked);
brcmf_net_detach(ifp->ndev, locked);
} else {
/* Only p2p device interfaces which get dynamically created
* end up here. In this case the p2p module should be informed
@ -947,7 +947,7 @@ static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx,
* serious troublesome side effects. The p2p module will clean
* up the ifp if needed.
*/
brcmf_p2p_ifp_removed(ifp, rtnl_locked);
brcmf_p2p_ifp_removed(ifp, locked);
kfree(ifp);
}
@ -956,14 +956,14 @@ static void brcmf_del_if(struct brcmf_pub *drvr, s32 bsscfgidx,
drvr->if2bss[ifidx] = BRCMF_BSSIDX_INVALID;
}
void brcmf_remove_interface(struct brcmf_if *ifp, bool rtnl_locked)
void brcmf_remove_interface(struct brcmf_if *ifp, bool locked)
{
if (!ifp || WARN_ON(ifp->drvr->iflist[ifp->bsscfgidx] != ifp))
return;
brcmf_dbg(TRACE, "Enter, bsscfgidx=%d, ifidx=%d\n", ifp->bsscfgidx,
ifp->ifidx);
brcmf_proto_del_if(ifp->drvr, ifp);
brcmf_del_if(ifp->drvr, ifp->bsscfgidx, rtnl_locked);
brcmf_del_if(ifp->drvr, ifp->bsscfgidx, locked);
}
static int brcmf_psm_watchdog_notify(struct brcmf_if *ifp,

6
drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.h
View File

@ -201,16 +201,16 @@ int brcmf_netdev_wait_pend8021x(struct brcmf_if *ifp);
char *brcmf_ifname(struct brcmf_if *ifp);
struct brcmf_if *brcmf_get_ifp(struct brcmf_pub *drvr, int ifidx);
void brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable);
int brcmf_net_attach(struct brcmf_if *ifp, bool rtnl_locked);
int brcmf_net_attach(struct brcmf_if *ifp, bool locked);
struct brcmf_if *brcmf_add_if(struct brcmf_pub *drvr, s32 bsscfgidx, s32 ifidx,
bool is_p2pdev, const char *name, u8 *mac_addr);
void brcmf_remove_interface(struct brcmf_if *ifp, bool rtnl_locked);
void brcmf_remove_interface(struct brcmf_if *ifp, bool locked);
void brcmf_txflowblock_if(struct brcmf_if *ifp,
enum brcmf_netif_stop_reason reason, bool state);
void brcmf_txfinalize(struct brcmf_if *ifp, struct sk_buff *txp, bool success);
void brcmf_netif_rx(struct brcmf_if *ifp, struct sk_buff *skb, bool inirq);
void brcmf_netif_mon_rx(struct brcmf_if *ifp, struct sk_buff *skb);
void brcmf_net_detach(struct net_device *ndev, bool rtnl_locked);
void brcmf_net_detach(struct net_device *ndev, bool locked);
int brcmf_net_mon_attach(struct brcmf_if *ifp);
void brcmf_net_setcarrier(struct brcmf_if *ifp, bool on);
int __init brcmf_core_init(void);

12
drivers/net/wireless/broadcom/brcm80211/brcmfmac/p2p.c
View File

@ -2430,7 +2430,7 @@ int brcmf_p2p_del_vif(struct wiphy *wiphy, struct wireless_dev *wdev)
return err;
}
void brcmf_p2p_ifp_removed(struct brcmf_if *ifp, bool rtnl_locked)
void brcmf_p2p_ifp_removed(struct brcmf_if *ifp, bool locked)
{
struct brcmf_cfg80211_info *cfg;
struct brcmf_cfg80211_vif *vif;
@ -2439,11 +2439,15 @@ void brcmf_p2p_ifp_removed(struct brcmf_if *ifp, bool rtnl_locked)
vif = ifp->vif;
cfg = wdev_to_cfg(&vif->wdev);
cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif = NULL;
if (!rtnl_locked)
if (locked) {
rtnl_lock();
cfg80211_unregister_wdev(&vif->wdev);
if (!rtnl_locked)
wiphy_lock(cfg->wiphy);
cfg80211_unregister_wdev(&vif->wdev);
wiphy_unlock(cfg->wiphy);
rtnl_unlock();
} else {
cfg80211_unregister_wdev(&vif->wdev);
}
brcmf_free_vif(vif);
}

2
drivers/net/wireless/intel/iwlwifi/mvm/d3.c
View File

@ -2143,7 +2143,7 @@ static int __iwl_mvm_resume(struct iwl_mvm *mvm, bool test)
out_iterate:
if (!test)
ieee80211_iterate_active_interfaces_rtnl(mvm->hw,
ieee80211_iterate_active_interfaces_mtx(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_d3_disconnect_iter, keep ? vif : NULL);

4
drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c
View File

@ -260,7 +260,7 @@ int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
int ret;
bool changed;
const struct ieee80211_regdomain *r =
rtnl_dereference(mvm->hw->wiphy->regd);
wiphy_dereference(mvm->hw->wiphy, mvm->hw->wiphy->regd);
if (!r)
return -ENOENT;
@ -282,7 +282,7 @@ int iwl_mvm_init_fw_regd(struct iwl_mvm *mvm)
/* update cfg80211 if the regdomain was changed */
if (changed)
ret = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
ret = regulatory_set_wiphy_regd_sync(mvm->hw->wiphy, regd);
else
ret = 0;

2
drivers/net/wireless/intel/iwlwifi/mvm/nvm.c
View File

@ -545,7 +545,7 @@ int iwl_mvm_init_mcc(struct iwl_mvm *mvm)
return -EIO;
}
retval = regulatory_set_wiphy_regd_sync_rtnl(mvm->hw->wiphy, regd);
retval = regulatory_set_wiphy_regd_sync(mvm->hw->wiphy, regd);
kfree(regd);
return retval;
}

74
drivers/net/wireless/mac80211_hwsim.c
View File

@ -311,6 +311,12 @@ static struct net_device *hwsim_mon; /* global monitor netdev */
.hw_value = (_freq), \
}
#define CHAN6G(_freq) { \
.band = NL80211_BAND_6GHZ, \
.center_freq = (_freq), \
.hw_value = (_freq), \
}
static const struct ieee80211_channel hwsim_channels_2ghz[] = {
CHAN2G(2412), /* Channel 1 */
CHAN2G(2417), /* Channel 2 */
@ -377,6 +383,68 @@ static const struct ieee80211_channel hwsim_channels_5ghz[] = {
CHAN5G(5925), /* Channel 185 */
};
static const struct ieee80211_channel hwsim_channels_6ghz[] = {
CHAN6G(5955), /* Channel 1 */
CHAN6G(5975), /* Channel 5 */
CHAN6G(5995), /* Channel 9 */
CHAN6G(6015), /* Channel 13 */
CHAN6G(6035), /* Channel 17 */
CHAN6G(6055), /* Channel 21 */
CHAN6G(6075), /* Channel 25 */
CHAN6G(6095), /* Channel 29 */
CHAN6G(6115), /* Channel 33 */
CHAN6G(6135), /* Channel 37 */
CHAN6G(6155), /* Channel 41 */
CHAN6G(6175), /* Channel 45 */
CHAN6G(6195), /* Channel 49 */
CHAN6G(6215), /* Channel 53 */
CHAN6G(6235), /* Channel 57 */
CHAN6G(6255), /* Channel 61 */
CHAN6G(6275), /* Channel 65 */
CHAN6G(6295), /* Channel 69 */
CHAN6G(6315), /* Channel 73 */
CHAN6G(6335), /* Channel 77 */
CHAN6G(6355), /* Channel 81 */
CHAN6G(6375), /* Channel 85 */
CHAN6G(6395), /* Channel 89 */
CHAN6G(6415), /* Channel 93 */
CHAN6G(6435), /* Channel 97 */
CHAN6G(6455), /* Channel 181 */
CHAN6G(6475), /* Channel 105 */
CHAN6G(6495), /* Channel 109 */
CHAN6G(6515), /* Channel 113 */
CHAN6G(6535), /* Channel 117 */
CHAN6G(6555), /* Channel 121 */
CHAN6G(6575), /* Channel 125 */
CHAN6G(6595), /* Channel 129 */
CHAN6G(6615), /* Channel 133 */
CHAN6G(6635), /* Channel 137 */
CHAN6G(6655), /* Channel 141 */
CHAN6G(6675), /* Channel 145 */
CHAN6G(6695), /* Channel 149 */
CHAN6G(6715), /* Channel 153 */
CHAN6G(6735), /* Channel 157 */
CHAN6G(6755), /* Channel 161 */
CHAN6G(6775), /* Channel 165 */
CHAN6G(6795), /* Channel 169 */
CHAN6G(6815), /* Channel 173 */
CHAN6G(6835), /* Channel 177 */
CHAN6G(6855), /* Channel 181 */
CHAN6G(6875), /* Channel 185 */
CHAN6G(6895), /* Channel 189 */
CHAN6G(6915), /* Channel 193 */
CHAN6G(6935), /* Channel 197 */
CHAN6G(6955), /* Channel 201 */
CHAN6G(6975), /* Channel 205 */
CHAN6G(6995), /* Channel 209 */
CHAN6G(7015), /* Channel 213 */
CHAN6G(7035), /* Channel 217 */
CHAN6G(7055), /* Channel 221 */
CHAN6G(7075), /* Channel 225 */
CHAN6G(7095), /* Channel 229 */
CHAN6G(7115), /* Channel 233 */
};
#define NUM_S1G_CHANS_US 51
static struct ieee80211_channel hwsim_channels_s1g[NUM_S1G_CHANS_US];
@ -548,6 +616,7 @@ struct mac80211_hwsim_data {
struct ieee80211_supported_band bands[NUM_NL80211_BANDS];
struct ieee80211_channel channels_2ghz[ARRAY_SIZE(hwsim_channels_2ghz)];
struct ieee80211_channel channels_5ghz[ARRAY_SIZE(hwsim_channels_5ghz)];
struct ieee80211_channel channels_6ghz[ARRAY_SIZE(hwsim_channels_6ghz)];
struct ieee80211_channel channels_s1g[ARRAY_SIZE(hwsim_channels_s1g)];
struct ieee80211_rate rates[ARRAY_SIZE(hwsim_rates)];
struct ieee80211_iface_combination if_combination;
@ -578,7 +647,8 @@ struct mac80211_hwsim_data {
struct ieee80211_channel *channel;
unsigned long next_start, start, end;
} survey_data[ARRAY_SIZE(hwsim_channels_2ghz) +
ARRAY_SIZE(hwsim_channels_5ghz)];
ARRAY_SIZE(hwsim_channels_5ghz) +
ARRAY_SIZE(hwsim_channels_6ghz)];
struct ieee80211_channel *channel;
u64 beacon_int /* beacon interval in us */;
@ -3149,6 +3219,8 @@ static int mac80211_hwsim_new_radio(struct genl_info *info,
sizeof(hwsim_channels_2ghz));
memcpy(data->channels_5ghz, hwsim_channels_5ghz,
sizeof(hwsim_channels_5ghz));
memcpy(data->channels_6ghz, hwsim_channels_6ghz,
sizeof(hwsim_channels_6ghz));
memcpy(data->channels_s1g, hwsim_channels_s1g,
sizeof(hwsim_channels_s1g));
memcpy(data->rates, hwsim_rates, sizeof(hwsim_rates));

10
drivers/net/wireless/marvell/mwifiex/cfg80211.c
View File

@ -2097,7 +2097,7 @@ mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
if (!mwifiex_stop_bg_scan(priv))
cfg80211_sched_scan_stopped_rtnl(priv->wdev.wiphy, 0);
cfg80211_sched_scan_stopped_locked(priv->wdev.wiphy, 0);
if (mwifiex_deauthenticate(priv, NULL))
return -EFAULT;
@ -2366,7 +2366,7 @@ mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
(int)sme->ssid_len, (char *)sme->ssid, sme->bssid);
if (!mwifiex_stop_bg_scan(priv))
cfg80211_sched_scan_stopped_rtnl(priv->wdev.wiphy, 0);
cfg80211_sched_scan_stopped_locked(priv->wdev.wiphy, 0);
ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
priv->bss_mode, sme->channel, sme, 0);
@ -2576,7 +2576,7 @@ mwifiex_cfg80211_scan(struct wiphy *wiphy,
priv->scan_block = false;
if (!mwifiex_stop_bg_scan(priv))
cfg80211_sched_scan_stopped_rtnl(priv->wdev.wiphy, 0);
cfg80211_sched_scan_stopped_locked(priv->wdev.wiphy, 0);
user_scan_cfg = kzalloc(sizeof(*user_scan_cfg), GFP_KERNEL);
if (!user_scan_cfg)
@ -3081,7 +3081,7 @@ struct wireless_dev *mwifiex_add_virtual_intf(struct wiphy *wiphy,
mutex_init(&priv->async_mutex);
/* Register network device */
if (register_netdevice(dev)) {
if (cfg80211_register_netdevice(dev)) {
mwifiex_dbg(adapter, ERROR, "cannot register network device\n");
ret = -EFAULT;
goto err_reg_netdev;
@ -3160,7 +3160,7 @@ int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
netif_carrier_off(priv->netdev);
if (wdev->netdev->reg_state == NETREG_REGISTERED)
unregister_netdevice(wdev->netdev);
cfg80211_unregister_netdevice(wdev->netdev);
if (priv->dfs_cac_workqueue) {
flush_workqueue(priv->dfs_cac_workqueue);

7
drivers/net/wireless/marvell/mwifiex/main.c
View File

@ -598,12 +598,14 @@ static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
}
rtnl_lock();
wiphy_lock(adapter->wiphy);
/* Create station interface by default */
wdev = mwifiex_add_virtual_intf(adapter->wiphy, "mlan%d", NET_NAME_ENUM,
NL80211_IFTYPE_STATION, NULL);
if (IS_ERR(wdev)) {
mwifiex_dbg(adapter, ERROR,
"cannot create default STA interface\n");
wiphy_unlock(adapter->wiphy);
rtnl_unlock();
goto err_add_intf;
}
@ -614,6 +616,7 @@ static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
if (IS_ERR(wdev)) {
mwifiex_dbg(adapter, ERROR,
"cannot create AP interface\n");
wiphy_unlock(adapter->wiphy);
rtnl_unlock();
goto err_add_intf;
}
@ -625,10 +628,12 @@ static int _mwifiex_fw_dpc(const struct firmware *firmware, void *context)
if (IS_ERR(wdev)) {
mwifiex_dbg(adapter, ERROR,
"cannot create p2p client interface\n");
wiphy_unlock(adapter->wiphy);
rtnl_unlock();
goto err_add_intf;
}
}
wiphy_unlock(adapter->wiphy);
rtnl_unlock();
mwifiex_drv_get_driver_version(adapter, fmt, sizeof(fmt) - 1);
@ -1440,9 +1445,11 @@ static void mwifiex_uninit_sw(struct mwifiex_adapter *adapter)
if (!priv)
continue;
rtnl_lock();
wiphy_lock(adapter->wiphy);
if (priv->netdev &&
priv->wdev.iftype != NL80211_IFTYPE_UNSPECIFIED)
mwifiex_del_virtual_intf(adapter->wiphy, &priv->wdev);
wiphy_unlock(adapter->wiphy);
rtnl_unlock();
}

2
drivers/net/wireless/microchip/wilc1000/cfg80211.c
View File

@ -1538,7 +1538,7 @@ static int del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
wilc_wfi_deinit_mon_interface(wl, true);
vif = netdev_priv(wdev->netdev);
cfg80211_stop_iface(wiphy, wdev, GFP_KERNEL);
unregister_netdevice(vif->ndev);
cfg80211_unregister_netdevice(vif->ndev);
vif->monitor_flag = 0;
wilc_set_operation_mode(vif, 0, 0, 0);

4
drivers/net/wireless/microchip/wilc1000/mon.c
View File

@ -233,7 +233,7 @@ struct net_device *wilc_wfi_init_mon_interface(struct wilc *wl,
wl->monitor_dev->netdev_ops = &wilc_wfi_netdev_ops;
wl->monitor_dev->needs_free_netdev = true;
if (register_netdevice(wl->monitor_dev)) {
if (cfg80211_register_netdevice(wl->monitor_dev)) {
netdev_err(real_dev, "register_netdevice failed\n");
free_netdev(wl->monitor_dev);
return NULL;
@ -251,7 +251,7 @@ void wilc_wfi_deinit_mon_interface(struct wilc *wl, bool rtnl_locked)
return;
if (rtnl_locked)
unregister_netdevice(wl->monitor_dev);
cfg80211_unregister_netdevice(wl->monitor_dev);
else
unregister_netdev(wl->monitor_dev);
wl->monitor_dev = NULL;

2
drivers/net/wireless/microchip/wilc1000/netdev.c
View File

@ -950,7 +950,7 @@ struct wilc_vif *wilc_netdev_ifc_init(struct wilc *wl, const char *name,
vif->priv.dev = ndev;
if (rtnl_locked)
ret = register_netdevice(ndev);
ret = cfg80211_register_netdevice(ndev);
else
ret = register_netdev(ndev);

4
drivers/net/wireless/quantenna/qtnfmac/cfg80211.c
View File

@ -180,7 +180,7 @@ int qtnf_del_virtual_intf(struct wiphy *wiphy, struct wireless_dev *wdev)
cancel_work_sync(&vif->high_pri_tx_work);
if (netdev->reg_state == NETREG_REGISTERED)
unregister_netdevice(netdev);
cfg80211_unregister_netdevice(netdev);
if (qtnf_cmd_send_del_intf(vif))
pr_err("VIF%u.%u: failed to delete VIF\n", vif->mac->macid,
@ -267,7 +267,7 @@ static struct wireless_dev *qtnf_add_virtual_intf(struct wiphy *wiphy,
if (qtnf_hwcap_is_set(&mac->bus->hw_info, QLINK_HW_CAPAB_HW_BRIDGE)) {
ret = qtnf_cmd_netdev_changeupper(vif, vif->netdev->ifindex);
if (ret) {
unregister_netdevice(vif->netdev);
cfg80211_unregister_netdevice(vif->netdev);
vif->netdev = NULL;
goto error_del_vif;
}

5
drivers/net/wireless/quantenna/qtnfmac/core.c
View File

@ -492,7 +492,7 @@ int qtnf_core_net_attach(struct qtnf_wmac *mac, struct qtnf_vif *vif,
SET_NETDEV_DEV(dev, wiphy_dev(wiphy));
ret = register_netdevice(dev);
ret = cfg80211_register_netdevice(dev);
if (ret) {
free_netdev(dev);
vif->netdev = NULL;
@ -611,8 +611,9 @@ static int qtnf_core_mac_attach(struct qtnf_bus *bus, unsigned int macid)
mac->wiphy_registered = 1;
rtnl_lock();
wiphy_lock(priv_to_wiphy(mac));
ret = qtnf_core_net_attach(mac, vif, "wlan%d", NET_NAME_ENUM);
wiphy_unlock(priv_to_wiphy(mac));
rtnl_unlock();
if (ret) {

146
include/net/cfg80211.h
View File

@ -1460,6 +1460,7 @@ int cfg80211_check_station_change(struct wiphy *wiphy,
* @RATE_INFO_FLAGS_DMG: 60GHz MCS
* @RATE_INFO_FLAGS_HE_MCS: HE MCS information
* @RATE_INFO_FLAGS_EDMG: 60GHz MCS in EDMG mode
* @RATE_INFO_FLAGS_EXTENDED_SC_DMG: 60GHz extended SC MCS
*/
enum rate_info_flags {
RATE_INFO_FLAGS_MCS = BIT(0),
@ -1468,6 +1469,7 @@ enum rate_info_flags {
RATE_INFO_FLAGS_DMG = BIT(3),
RATE_INFO_FLAGS_HE_MCS = BIT(4),
RATE_INFO_FLAGS_EDMG = BIT(5),
RATE_INFO_FLAGS_EXTENDED_SC_DMG = BIT(6),
};
/**
@ -3630,9 +3632,10 @@ struct mgmt_frame_regs {
* All callbacks except where otherwise noted should return 0
* on success or a negative error code.
*
* All operations are currently invoked under rtnl for consistency with the
* wireless extensions but this is subject to reevaluation as soon as this
* code is used more widely and we have a first user without wext.
* All operations are invoked with the wiphy mutex held. The RTNL may be
* held in addition (due to wireless extensions) but this cannot be relied
* upon except in cases where documented below. Note that due to ordering,
* the RTNL also cannot be acquired in any handlers.
*
* @suspend: wiphy device needs to be suspended. The variable @wow will
* be %NULL or contain the enabled Wake-on-Wireless triggers that are
@ -3647,11 +3650,14 @@ struct mgmt_frame_regs {
* the new netdev in the wiphy's network namespace! Returns the struct
* wireless_dev, or an ERR_PTR. For P2P device wdevs, the driver must
* also set the address member in the wdev.
* This additionally holds the RTNL to be able to do netdev changes.
*
* @del_virtual_intf: remove the virtual interface
* This additionally holds the RTNL to be able to do netdev changes.
*
* @change_virtual_intf: change type/configuration of virtual interface,
* keep the struct wireless_dev's iftype updated.
* This additionally holds the RTNL to be able to do netdev changes.
*
* @add_key: add a key with the given parameters. @mac_addr will be %NULL
* when adding a group key.
@ -4741,6 +4747,7 @@ struct wiphy_iftype_akm_suites {
/**
* struct wiphy - wireless hardware description
* @mtx: mutex for the data (structures) of this device
* @reg_notifier: the driver's regulatory notification callback,
* note that if your driver uses wiphy_apply_custom_regulatory()
* the reg_notifier's request can be passed as NULL
@ -4934,6 +4941,8 @@ struct wiphy_iftype_akm_suites {
* @sar_capa: SAR control capabilities
*/
struct wiphy {
struct mutex mtx;
/* assign these fields before you register the wiphy */
u8 perm_addr[ETH_ALEN];
@ -5186,6 +5195,37 @@ static inline struct wiphy *wiphy_new(const struct cfg80211_ops *ops,
*/
int wiphy_register(struct wiphy *wiphy);
/* this is a define for better error reporting (file/line) */
#define lockdep_assert_wiphy(wiphy) lockdep_assert_held(&(wiphy)->mtx)
/**
* rcu_dereference_wiphy - rcu_dereference with debug checking
* @wiphy: the wiphy to check the locking on
* @p: The pointer to read, prior to dereferencing
*
* Do an rcu_dereference(p), but check caller either holds rcu_read_lock()
* or RTNL. Note: Please prefer wiphy_dereference() or rcu_dereference().
*/
#define rcu_dereference_wiphy(wiphy, p) \
rcu_dereference_check(p, lockdep_is_held(&wiphy->mtx))
/**
* wiphy_dereference - fetch RCU pointer when updates are prevented by wiphy mtx
* @wiphy: the wiphy to check the locking on
* @p: The pointer to read, prior to dereferencing
*
* Return the value of the specified RCU-protected pointer, but omit the
* READ_ONCE(), because caller holds the wiphy mutex used for updates.
*/
#define wiphy_dereference(wiphy, p) \
rcu_dereference_protected(p, lockdep_is_held(&wiphy->mtx))
/**
* get_wiphy_regdom - get custom regdomain for the given wiphy
* @wiphy: the wiphy to get the regdomain from
*/
const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy);
/**
* wiphy_unregister - deregister a wiphy from cfg80211
*
@ -5210,6 +5250,35 @@ struct cfg80211_internal_bss;
struct cfg80211_cached_keys;
struct cfg80211_cqm_config;
/**
* wiphy_lock - lock the wiphy
* @wiphy: the wiphy to lock
*
* This is mostly exposed so it can be done around registering and
* unregistering netdevs that aren't created through cfg80211 calls,
* since that requires locking in cfg80211 when the notifiers is
* called, but that cannot differentiate which way it's called.
*
* When cfg80211 ops are called, the wiphy is already locked.
*/
static inline void wiphy_lock(struct wiphy *wiphy)
__acquires(&wiphy->mtx)
{
mutex_lock(&wiphy->mtx);
__acquire(&wiphy->mtx);
}
/**
* wiphy_unlock - unlock the wiphy again
* @wiphy: the wiphy to unlock
*/
static inline void wiphy_unlock(struct wiphy *wiphy)
__releases(&wiphy->mtx)
{
__release(&wiphy->mtx);
mutex_unlock(&wiphy->mtx);
}
/**
* struct wireless_dev - wireless device state
*
@ -5217,7 +5286,10 @@ struct cfg80211_cqm_config;
* that uses the ieee80211_ptr field in struct net_device (this
* is intentional so it can be allocated along with the netdev.)
* It need not be registered then as netdev registration will
* be intercepted by cfg80211 to see the new wireless device.
* be intercepted by cfg80211 to see the new wireless device,
* however, drivers must lock the wiphy before registering or
* unregistering netdevs if they pre-create any netdevs (in ops
* called from cfg80211, the wiphy is already locked.)
*
* For non-netdev uses, it must also be allocated by the driver
* in response to the cfg80211 callbacks that require it, as
@ -5226,6 +5298,7 @@ struct cfg80211_cqm_config;
*
* @wiphy: pointer to hardware description
* @iftype: interface type
* @registered: is this wdev already registered with cfg80211
* @list: (private) Used to collect the interfaces
* @netdev: (private) Used to reference back to the netdev, may be %NULL
* @identifier: (private) Identifier used in nl80211 to identify this
@ -5309,7 +5382,7 @@ struct wireless_dev {
struct mutex mtx;
bool use_4addr, is_running;
bool use_4addr, is_running, registered;
u8 address[ETH_ALEN] __aligned(sizeof(u16));
@ -5978,18 +6051,18 @@ int regulatory_set_wiphy_regd(struct wiphy *wiphy,
struct ieee80211_regdomain *rd);
/**
* regulatory_set_wiphy_regd_sync_rtnl - set regdom for self-managed drivers
* regulatory_set_wiphy_regd_sync - set regdom for self-managed drivers
* @wiphy: the wireless device we want to process the regulatory domain on
* @rd: the regulatory domain information to use for this wiphy
*
* This functions requires the RTNL to be held and applies the new regdomain
* synchronously to this wiphy. For more details see
* regulatory_set_wiphy_regd().
* This functions requires the RTNL and the wiphy mutex to be held and
* applies the new regdomain synchronously to this wiphy. For more details
* see regulatory_set_wiphy_regd().
*
* Return: 0 on success. -EINVAL, -EPERM
*/
int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
struct ieee80211_regdomain *rd);
int regulatory_set_wiphy_regd_sync(struct wiphy *wiphy,
struct ieee80211_regdomain *rd);
/**
* wiphy_apply_custom_regulatory - apply a custom driver regulatory domain
@ -6107,7 +6180,7 @@ void cfg80211_sched_scan_results(struct wiphy *wiphy, u64 reqid);
void cfg80211_sched_scan_stopped(struct wiphy *wiphy, u64 reqid);
/**
* cfg80211_sched_scan_stopped_rtnl - notify that the scheduled scan has stopped
* cfg80211_sched_scan_stopped_locked - notify that the scheduled scan has stopped
*
* @wiphy: the wiphy on which the scheduled scan stopped
* @reqid: identifier for the related scheduled scan request
@ -6115,9 +6188,9 @@ void cfg80211_sched_scan_stopped(struct wiphy *wiphy, u64 reqid);
* The driver can call this function to inform cfg80211 that the
* scheduled scan had to be stopped, for whatever reason. The driver
* is then called back via the sched_scan_stop operation when done.
* This function should be called with rtnl locked.
* This function should be called with the wiphy mutex held.
*/
void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy, u64 reqid);
void cfg80211_sched_scan_stopped_locked(struct wiphy *wiphy, u64 reqid);
/**
* cfg80211_inform_bss_frame_data - inform cfg80211 of a received BSS frame
@ -7554,7 +7627,7 @@ bool cfg80211_reg_can_beacon(struct wiphy *wiphy,
* also checks if IR-relaxation conditions apply, to allow beaconing under
* more permissive conditions.
*
* Requires the RTNL to be held.
* Requires the wiphy mutex to be held.
*/
bool cfg80211_reg_can_beacon_relax(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef,
@ -7652,18 +7725,45 @@ u32 cfg80211_calculate_bitrate(struct rate_info *rate);
* cfg80211_unregister_wdev - remove the given wdev
* @wdev: struct wireless_dev to remove
*
* Call this function only for wdevs that have no netdev assigned,
* e.g. P2P Devices. It removes the device from the list so that
* it can no longer be used. It is necessary to call this function
* even when cfg80211 requests the removal of the interface by
* calling the del_virtual_intf() callback. The function must also
* be called when the driver wishes to unregister the wdev, e.g.
* when the device is unbound from the driver.
* This function removes the device so it can no longer be used. It is necessary
* to call this function even when cfg80211 requests the removal of the device
* by calling the del_virtual_intf() callback. The function must also be called
* when the driver wishes to unregister the wdev, e.g. when the hardware device
* is unbound from the driver.
*
* Requires the RTNL to be held.
* Requires the RTNL and wiphy mutex to be held.
*/
void cfg80211_unregister_wdev(struct wireless_dev *wdev);
/**
* cfg80211_register_netdevice - register the given netdev
* @dev: the netdev to register
*
* Note: In contexts coming from cfg80211 callbacks, you must call this rather
* than register_netdevice(), unregister_netdev() is impossible as the RTNL is
* held. Otherwise, both register_netdevice() and register_netdev() are usable
* instead as well.
*
* Requires the RTNL and wiphy mutex to be held.
*/
int cfg80211_register_netdevice(struct net_device *dev);
/**
* cfg80211_unregister_netdevice - unregister the given netdev
* @dev: the netdev to register
*
* Note: In contexts coming from cfg80211 callbacks, you must call this rather
* than unregister_netdevice(), unregister_netdev() is impossible as the RTNL
* is held. Otherwise, both unregister_netdevice() and unregister_netdev() are
* usable instead as well.
*
* Requires the RTNL and wiphy mutex to be held.
*/
static inline void cfg80211_unregister_netdevice(struct net_device *dev)
{
cfg80211_unregister_wdev(dev->ieee80211_ptr);
}
/**
* struct cfg80211_ft_event_params - FT Information Elements
* @ies: FT IEs

11
include/net/fq.h
View File

@ -19,8 +19,6 @@ struct fq_tin;
* @flowchain: can be linked to fq_tin's new_flows or old_flows. Used for DRR++
* (deficit round robin) based round robin queuing similar to the one
* found in net/sched/sch_fq_codel.c
* @backlogchain: can be linked to other fq_flow and fq. Used to keep track of
* fat flows and efficient head-dropping if packet limit is reached
* @queue: sk_buff queue to hold packets
* @backlog: number of bytes pending in the queue. The number of packets can be
* found in @queue.qlen
@ -29,7 +27,6 @@ struct fq_tin;
struct fq_flow {
struct fq_tin *tin;
struct list_head flowchain;
struct list_head backlogchain;
struct sk_buff_head queue;
u32 backlog;
int deficit;
@ -47,6 +44,8 @@ struct fq_flow {
struct fq_tin {
struct list_head new_flows;
struct list_head old_flows;
struct list_head tin_list;
struct fq_flow default_flow;
u32 backlog_bytes;
u32 backlog_packets;
u32 overlimit;
@ -59,14 +58,14 @@ struct fq_tin {
/**
* struct fq - main container for fair queuing purposes
*
* @backlogs: linked to fq_flows. Used to maintain fat flows for efficient
* head-dropping when @backlog reaches @limit
* @limit: max number of packets that can be queued across all flows
* @backlog: number of packets queued across all flows
*/
struct fq {
struct fq_flow *flows;
struct list_head backlogs;
unsigned long *flows_bitmap;
struct list_head tin_backlog;
spinlock_t lock;
u32 flows_cnt;
u32 limit;

177
include/net/fq_impl.h
View File

@ -11,35 +11,37 @@
/* functions that are embedded into includer */
static void
__fq_adjust_removal(struct fq *fq, struct fq_flow *flow, unsigned int packets,
unsigned int bytes, unsigned int truesize)
{
struct fq_tin *tin = flow->tin;
int idx;
tin->backlog_bytes -= bytes;
tin->backlog_packets -= packets;
flow->backlog -= bytes;
fq->backlog -= packets;
fq->memory_usage -= truesize;
if (flow->backlog)
return;
if (flow == &tin->default_flow) {
list_del_init(&tin->tin_list);
return;
}
idx = flow - fq->flows;
__clear_bit(idx, fq->flows_bitmap);
}
static void fq_adjust_removal(struct fq *fq,
struct fq_flow *flow,
struct sk_buff *skb)
{
struct fq_tin *tin = flow->tin;
tin->backlog_bytes -= skb->len;
tin->backlog_packets--;
flow->backlog -= skb->len;
fq->backlog--;
fq->memory_usage -= skb->truesize;
}
static void fq_rejigger_backlog(struct fq *fq, struct fq_flow *flow)
{
struct fq_flow *i;
if (flow->backlog == 0) {
list_del_init(&flow->backlogchain);
} else {
i = flow;
list_for_each_entry_continue(i, &fq->backlogs, backlogchain)
if (i->backlog < flow->backlog)
break;
list_move_tail(&flow->backlogchain,
&i->backlogchain);
}
__fq_adjust_removal(fq, flow, 1, skb->len, skb->truesize);
}
static struct sk_buff *fq_flow_dequeue(struct fq *fq,
@ -54,11 +56,37 @@ static struct sk_buff *fq_flow_dequeue(struct fq *fq,
return NULL;
fq_adjust_removal(fq, flow, skb);
fq_rejigger_backlog(fq, flow);
return skb;
}
static int fq_flow_drop(struct fq *fq, struct fq_flow *flow,
fq_skb_free_t free_func)
{
unsigned int packets = 0, bytes = 0, truesize = 0;
struct fq_tin *tin = flow->tin;
struct sk_buff *skb;
int pending;
lockdep_assert_held(&fq->lock);
pending = min_t(int, 32, skb_queue_len(&flow->queue) / 2);
do {
skb = __skb_dequeue(&flow->queue);
if (!skb)
break;
packets++;
bytes += skb->len;
truesize += skb->truesize;
free_func(fq, tin, flow, skb);
} while (packets < pending);
__fq_adjust_removal(fq, flow, packets, bytes, truesize);
return packets;
}
static struct sk_buff *fq_tin_dequeue(struct fq *fq,
struct fq_tin *tin,
fq_tin_dequeue_t dequeue_func)
@ -115,8 +143,7 @@ static u32 fq_flow_idx(struct fq *fq, struct sk_buff *skb)
static struct fq_flow *fq_flow_classify(struct fq *fq,
struct fq_tin *tin, u32 idx,
struct sk_buff *skb,
fq_flow_get_default_t get_default_func)
struct sk_buff *skb)
{
struct fq_flow *flow;
@ -124,7 +151,7 @@ static struct fq_flow *fq_flow_classify(struct fq *fq,
flow = &fq->flows[idx];
if (flow->tin && flow->tin != tin) {
flow = get_default_func(fq, tin, idx, skb);
flow = &tin->default_flow;
tin->collisions++;
fq->collisions++;
}
@ -135,36 +162,56 @@ static struct fq_flow *fq_flow_classify(struct fq *fq,
return flow;
}
static void fq_recalc_backlog(struct fq *fq,
struct fq_tin *tin,
struct fq_flow *flow)
static struct fq_flow *fq_find_fattest_flow(struct fq *fq)
{
struct fq_flow *i;
struct fq_tin *tin;
struct fq_flow *flow = NULL;
u32 len = 0;
int i;
if (list_empty(&flow->backlogchain))
list_add_tail(&flow->backlogchain, &fq->backlogs);
for_each_set_bit(i, fq->flows_bitmap, fq->flows_cnt) {
struct fq_flow *cur = &fq->flows[i];
unsigned int cur_len;
i = flow;
list_for_each_entry_continue_reverse(i, &fq->backlogs,
backlogchain)
if (i->backlog > flow->backlog)
break;
cur_len = cur->backlog;
if (cur_len <= len)
continue;
list_move(&flow->backlogchain, &i->backlogchain);
flow = cur;
len = cur_len;
}
list_for_each_entry(tin, &fq->tin_backlog, tin_list) {
unsigned int cur_len = tin->default_flow.backlog;
if (cur_len <= len)
continue;
flow = &tin->default_flow;
len = cur_len;
}
return flow;
}
static void fq_tin_enqueue(struct fq *fq,
struct fq_tin *tin, u32 idx,
struct sk_buff *skb,
fq_skb_free_t free_func,
fq_flow_get_default_t get_default_func)
fq_skb_free_t free_func)
{
struct fq_flow *flow;
bool oom;
lockdep_assert_held(&fq->lock);
flow = fq_flow_classify(fq, tin, idx, skb, get_default_func);
flow = fq_flow_classify(fq, tin, idx, skb);
if (!flow->backlog) {
if (flow != &tin->default_flow)
__set_bit(idx, fq->flows_bitmap);
else if (list_empty(&tin->tin_list))
list_add(&tin->tin_list, &fq->tin_backlog);
}
flow->tin = tin;
flow->backlog += skb->len;
@ -173,8 +220,6 @@ static void fq_tin_enqueue(struct fq *fq,
fq->memory_usage += skb->truesize;
fq->backlog++;
fq_recalc_backlog(fq, tin, flow);
if (list_empty(&flow->flowchain)) {
flow->deficit = fq->quantum;
list_add_tail(&flow->flowchain,
@ -184,18 +229,13 @@ static void fq_tin_enqueue(struct fq *fq,
__skb_queue_tail(&flow->queue, skb);
oom = (fq->memory_usage > fq->memory_limit);
while (fq->backlog > fq->limit || oom) {
flow = list_first_entry_or_null(&fq->backlogs,
struct fq_flow,
backlogchain);
flow = fq_find_fattest_flow(fq);
if (!flow)
return;
skb = fq_flow_dequeue(fq, flow);
if (!skb)
if (!fq_flow_drop(fq, flow, free_func))
return;
free_func(fq, flow->tin, flow, skb);
flow->tin->overlimit++;
fq->overlimit++;
if (oom) {
@ -224,8 +264,6 @@ static void fq_flow_filter(struct fq *fq,
fq_adjust_removal(fq, flow, skb);
free_func(fq, tin, flow, skb);
}
fq_rejigger_backlog(fq, flow);
}
static void fq_tin_filter(struct fq *fq,
@ -248,16 +286,18 @@ static void fq_flow_reset(struct fq *fq,
struct fq_flow *flow,
fq_skb_free_t free_func)
{
struct fq_tin *tin = flow->tin;
struct sk_buff *skb;
while ((skb = fq_flow_dequeue(fq, flow)))
free_func(fq, flow->tin, flow, skb);
free_func(fq, tin, flow, skb);
if (!list_empty(&flow->flowchain))
if (!list_empty(&flow->flowchain)) {
list_del_init(&flow->flowchain);
if (!list_empty(&flow->backlogchain))
list_del_init(&flow->backlogchain);
if (list_empty(&tin->new_flows) &&
list_empty(&tin->old_flows))
list_del_init(&tin->tin_list);
}
flow->tin = NULL;
@ -283,6 +323,7 @@ static void fq_tin_reset(struct fq *fq,
fq_flow_reset(fq, flow, free_func);
}
WARN_ON_ONCE(!list_empty(&tin->tin_list));
WARN_ON_ONCE(tin->backlog_bytes);
WARN_ON_ONCE(tin->backlog_packets);
}
@ -290,7 +331,6 @@ static void fq_tin_reset(struct fq *fq,
static void fq_flow_init(struct fq_flow *flow)
{
INIT_LIST_HEAD(&flow->flowchain);
INIT_LIST_HEAD(&flow->backlogchain);
__skb_queue_head_init(&flow->queue);
}
@ -298,6 +338,8 @@ static void fq_tin_init(struct fq_tin *tin)
{
INIT_LIST_HEAD(&tin->new_flows);
INIT_LIST_HEAD(&tin->old_flows);
INIT_LIST_HEAD(&tin->tin_list);
fq_flow_init(&tin->default_flow);
}
static int fq_init(struct fq *fq, int flows_cnt)
@ -305,8 +347,8 @@ static int fq_init(struct fq *fq, int flows_cnt)
int i;
memset(fq, 0, sizeof(fq[0]));
INIT_LIST_HEAD(&fq->backlogs);
spin_lock_init(&fq->lock);
INIT_LIST_HEAD(&fq->tin_backlog);
fq->flows_cnt = max_t(u32, flows_cnt, 1);
fq->quantum = 300;
fq->limit = 8192;
@ -316,6 +358,14 @@ static int fq_init(struct fq *fq, int flows_cnt)
if (!fq->flows)
return -ENOMEM;
fq->flows_bitmap = kcalloc(BITS_TO_LONGS(fq->flows_cnt), sizeof(long),
GFP_KERNEL);
if (!fq->flows_bitmap) {
kvfree(fq->flows);
fq->flows = NULL;
return -ENOMEM;
}
for (i = 0; i < fq->flows_cnt; i++)
fq_flow_init(&fq->flows[i]);
@ -332,6 +382,9 @@ static void fq_reset(struct fq *fq,
kvfree(fq->flows);
fq->flows = NULL;
kfree(fq->flows_bitmap);
fq->flows_bitmap = NULL;
}
#endif

26
include/net/mac80211.h
View File

@ -1296,6 +1296,8 @@ ieee80211_tx_info_clear_status(struct ieee80211_tx_info *info)
* the "0-length PSDU" field included there. The value for it is
* in &struct ieee80211_rx_status. Note that if this value isn't
* known the frame shouldn't be reported.
* @RX_FLAG_8023: the frame has an 802.3 header (decap offload performed by
* hardware or driver)
*/
enum mac80211_rx_flags {
RX_FLAG_MMIC_ERROR = BIT(0),
@ -1328,6 +1330,7 @@ enum mac80211_rx_flags {
RX_FLAG_RADIOTAP_HE_MU = BIT(27),
RX_FLAG_RADIOTAP_LSIG = BIT(28),
RX_FLAG_NO_PSDU = BIT(29),
RX_FLAG_8023 = BIT(30),
};
/**
@ -1649,11 +1652,15 @@ enum ieee80211_vif_flags {
* The driver supports sending frames passed as 802.3 frames by mac80211.
* It must also support sending 802.11 packets for the same interface.
* @IEEE80211_OFFLOAD_ENCAP_4ADDR: support 4-address mode encapsulation offload
* @IEEE80211_OFFLOAD_DECAP_ENABLED: rx encapsulation offload is enabled
* The driver supports passing received 802.11 frames as 802.3 frames to
* mac80211.
*/
enum ieee80211_offload_flags {
IEEE80211_OFFLOAD_ENCAP_ENABLED = BIT(0),
IEEE80211_OFFLOAD_ENCAP_4ADDR = BIT(1),
IEEE80211_OFFLOAD_DECAP_ENABLED = BIT(2),
};
/**
@ -2389,6 +2396,9 @@ struct ieee80211_txq {
* @IEEE80211_HW_SUPPORTS_TX_ENCAP_OFFLOAD: Hardware supports tx encapsulation
* offload
*
* @IEEE80211_HW_SUPPORTS_RX_DECAP_OFFLOAD: Hardware supports rx decapsulation
* offload
*
* @NUM_IEEE80211_HW_FLAGS: number of hardware flags, used for sizing arrays
*/
enum ieee80211_hw_flags {
@ -2442,6 +2452,7 @@ enum ieee80211_hw_flags {
IEEE80211_HW_SUPPORTS_ONLY_HE_MULTI_BSSID,
IEEE80211_HW_AMPDU_KEYBORDER_SUPPORT,
IEEE80211_HW_SUPPORTS_TX_ENCAP_OFFLOAD,
IEEE80211_HW_SUPPORTS_RX_DECAP_OFFLOAD,
/* keep last, obviously */
NUM_IEEE80211_HW_FLAGS
@ -3881,6 +3892,8 @@ enum ieee80211_reconfig_type {
* @sta_set_4addr: Called to notify the driver when a station starts/stops using
* 4-address mode
* @set_sar_specs: Update the SAR (TX power) settings.
* @sta_set_decap_offload: Called to notify the driver when a station is allowed
* to use rx decapsulation offload
*/
struct ieee80211_ops {
void (*tx)(struct ieee80211_hw *hw,
@ -4198,6 +4211,9 @@ struct ieee80211_ops {
struct ieee80211_sta *sta, bool enabled);
int (*set_sar_specs)(struct ieee80211_hw *hw,
const struct cfg80211_sar_specs *sar);
void (*sta_set_decap_offload)(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta, bool enabled);
};
/**
@ -5513,7 +5529,7 @@ void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw,
void *data);
/**
* ieee80211_iterate_active_interfaces_rtnl - iterate active interfaces
* ieee80211_iterate_active_interfaces_mtx - iterate active interfaces
*
* This function iterates over the interfaces associated with a given
* hardware that are currently active and calls the callback for them.
@ -5524,12 +5540,12 @@ void ieee80211_iterate_active_interfaces_atomic(struct ieee80211_hw *hw,
* @iterator: the iterator function to call, cannot sleep
* @data: first argument of the iterator function
*/
void ieee80211_iterate_active_interfaces_rtnl(struct ieee80211_hw *hw,
u32 iter_flags,
void (*iterator)(void *data,
void ieee80211_iterate_active_interfaces_mtx(struct ieee80211_hw *hw,
u32 iter_flags,
void (*iterator)(void *data,
u8 *mac,
struct ieee80211_vif *vif),
void *data);
void *data);
/**
* ieee80211_iterate_stations_atomic - iterate stations

2
net/mac80211/Makefile
View File

@ -56,11 +56,9 @@ mac80211-$(CONFIG_PM) += pm.o
CFLAGS_trace.o := -I$(src)
rc80211_minstrel-y := \
rc80211_minstrel.o \
rc80211_minstrel_ht.o
rc80211_minstrel-$(CONFIG_MAC80211_DEBUGFS) += \
rc80211_minstrel_debugfs.o \
rc80211_minstrel_ht_debugfs.o
mac80211-$(CONFIG_MAC80211_RC_MINSTREL) += $(rc80211_minstrel-y)

52
net/mac80211/debugfs.c
View File

@ -281,6 +281,56 @@ static const struct file_operations aql_txq_limit_ops = {
.llseek = default_llseek,
};
static ssize_t aql_enable_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
char buf[3];
int len;
len = scnprintf(buf, sizeof(buf), "%d\n",
!static_key_false(&aql_disable.key));
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
static ssize_t aql_enable_write(struct file *file, const char __user *user_buf,
size_t count, loff_t *ppos)
{
bool aql_disabled = static_key_false(&aql_disable.key);
char buf[3];
size_t len;
if (count > sizeof(buf))
return -EINVAL;
if (copy_from_user(buf, user_buf, count))
return -EFAULT;
buf[sizeof(buf) - 1] = '\0';
len = strlen(buf);
if (len > 0 && buf[len - 1] == '\n')
buf[len - 1] = 0;
if (buf[0] == '0' && buf[1] == '\0') {
if (!aql_disabled)
static_branch_inc(&aql_disable);
} else if (buf[0] == '1' && buf[1] == '\0') {
if (aql_disabled)
static_branch_dec(&aql_disable);
} else {
return -EINVAL;
}
return count;
}
static const struct file_operations aql_enable_ops = {
.write = aql_enable_write,
.read = aql_enable_read,
.open = simple_open,
.llseek = default_llseek,
};
static ssize_t force_tx_status_read(struct file *file,
char __user *user_buf,
size_t count,
@ -405,6 +455,7 @@ static const char *hw_flag_names[] = {
FLAG(SUPPORTS_ONLY_HE_MULTI_BSSID),
FLAG(AMPDU_KEYBORDER_SUPPORT),
FLAG(SUPPORTS_TX_ENCAP_OFFLOAD),
FLAG(SUPPORTS_RX_DECAP_OFFLOAD),
#undef FLAG
};
@ -568,6 +619,7 @@ void debugfs_hw_add(struct ieee80211_local *local)
DEBUGFS_ADD(power);
DEBUGFS_ADD(hw_conf);
DEBUGFS_ADD_MODE(force_tx_status, 0600);
DEBUGFS_ADD_MODE(aql_enable, 0600);
if (local->ops->wake_tx_queue)
DEBUGFS_ADD_MODE(aqm, 0600);

1
net/mac80211/debugfs_sta.c
View File

@ -79,6 +79,7 @@ static const char * const sta_flag_names[] = {
FLAG(MPSP_RECIPIENT),
FLAG(PS_DELIVER),
FLAG(USES_ENCRYPTION),
FLAG(DECAP_OFFLOAD),
#undef FLAG
};

16
net/mac80211/driver-ops.h
View File

@ -1413,4 +1413,20 @@ static inline void drv_sta_set_4addr(struct ieee80211_local *local,
trace_drv_return_void(local);
}
static inline void drv_sta_set_decap_offload(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta,
bool enabled)
{
sdata = get_bss_sdata(sdata);
if (!check_sdata_in_driver(sdata))
return;
trace_drv_sta_set_decap_offload(local, sdata, sta, enabled);
if (local->ops->sta_set_decap_offload)
local->ops->sta_set_decap_offload(&local->hw, &sdata->vif, sta,
enabled);
trace_drv_return_void(local);
}
#endif /* __MAC80211_DRIVER_OPS */

92
net/mac80211/he.c
View File

@ -52,6 +52,57 @@ ieee80211_update_from_he_6ghz_capa(const struct ieee80211_he_6ghz_capa *he_6ghz_
sta->sta.he_6ghz_capa = *he_6ghz_capa;
}
static void ieee80211_he_mcs_disable(__le16 *he_mcs)
{
u32 i;
for (i = 0; i < 8; i++)
*he_mcs |= cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
}
static void ieee80211_he_mcs_intersection(__le16 *he_own_rx, __le16 *he_peer_rx,
__le16 *he_own_tx, __le16 *he_peer_tx)
{
u32 i;
u16 own_rx, own_tx, peer_rx, peer_tx;
for (i = 0; i < 8; i++) {
own_rx = le16_to_cpu(*he_own_rx);
own_rx = (own_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
own_tx = le16_to_cpu(*he_own_tx);
own_tx = (own_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
peer_rx = le16_to_cpu(*he_peer_rx);
peer_rx = (peer_rx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
peer_tx = le16_to_cpu(*he_peer_tx);
peer_tx = (peer_tx >> i * 2) & IEEE80211_HE_MCS_NOT_SUPPORTED;
if (peer_tx != IEEE80211_HE_MCS_NOT_SUPPORTED) {
if (own_rx == IEEE80211_HE_MCS_NOT_SUPPORTED)
peer_tx = IEEE80211_HE_MCS_NOT_SUPPORTED;
else if (own_rx < peer_tx)
peer_tx = own_rx;
}
if (peer_rx != IEEE80211_HE_MCS_NOT_SUPPORTED) {
if (own_tx == IEEE80211_HE_MCS_NOT_SUPPORTED)
peer_rx = IEEE80211_HE_MCS_NOT_SUPPORTED;
else if (own_tx < peer_rx)
peer_rx = own_tx;
}
*he_peer_rx &=
~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
*he_peer_rx |= cpu_to_le16(peer_rx << i * 2);
*he_peer_tx &=
~cpu_to_le16(IEEE80211_HE_MCS_NOT_SUPPORTED << i * 2);
*he_peer_tx |= cpu_to_le16(peer_tx << i * 2);
}
}
void
ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
struct ieee80211_supported_band *sband,
@ -60,10 +111,12 @@ ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
struct sta_info *sta)
{
struct ieee80211_sta_he_cap *he_cap = &sta->sta.he_cap;
struct ieee80211_sta_he_cap own_he_cap = sband->iftype_data->he_cap;
struct ieee80211_he_cap_elem *he_cap_ie_elem = (void *)he_cap_ie;
u8 he_ppe_size;
u8 mcs_nss_size;
u8 he_total_size;
bool own_160, peer_160, own_80p80, peer_80p80;
memset(he_cap, 0, sizeof(*he_cap));
@ -101,6 +154,45 @@ ieee80211_he_cap_ie_to_sta_he_cap(struct ieee80211_sub_if_data *sdata,
if (sband->band == NL80211_BAND_6GHZ && he_6ghz_capa)
ieee80211_update_from_he_6ghz_capa(he_6ghz_capa, sta);
ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80,
&he_cap->he_mcs_nss_supp.rx_mcs_80,
&own_he_cap.he_mcs_nss_supp.tx_mcs_80,
&he_cap->he_mcs_nss_supp.tx_mcs_80);
own_160 = own_he_cap.he_cap_elem.phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
peer_160 = he_cap->he_cap_elem.phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
if (peer_160 && own_160) {
ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_160,
&he_cap->he_mcs_nss_supp.rx_mcs_160,
&own_he_cap.he_mcs_nss_supp.tx_mcs_160,
&he_cap->he_mcs_nss_supp.tx_mcs_160);
} else if (peer_160 && !own_160) {
ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_160);
ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_160);
he_cap->he_cap_elem.phy_cap_info[0] &=
~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
}
own_80p80 = own_he_cap.he_cap_elem.phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
peer_80p80 = he_cap->he_cap_elem.phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
if (peer_80p80 && own_80p80) {
ieee80211_he_mcs_intersection(&own_he_cap.he_mcs_nss_supp.rx_mcs_80p80,
&he_cap->he_mcs_nss_supp.rx_mcs_80p80,
&own_he_cap.he_mcs_nss_supp.tx_mcs_80p80,
&he_cap->he_mcs_nss_supp.tx_mcs_80p80);
} else if (peer_80p80 && !own_80p80) {
ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.rx_mcs_80p80);
ieee80211_he_mcs_disable(&he_cap->he_mcs_nss_supp.tx_mcs_80p80);
he_cap->he_cap_elem.phy_cap_info[0] &=
~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
}
}
void

3
net/mac80211/ieee80211_i.h
View File

@ -848,7 +848,6 @@ enum txq_info_flags {
*/
struct txq_info {
struct fq_tin tin;
struct fq_flow def_flow;
struct codel_vars def_cvars;
struct codel_stats cstats;
struct sk_buff_head frags;
@ -1143,6 +1142,8 @@ enum mac80211_scan_state {
SCAN_ABORT,
};
DECLARE_STATIC_KEY_FALSE(aql_disable);
struct ieee80211_local {
/* embed the driver visible part.
* don't cast (use the static inlines below), but we keep

40
net/mac80211/iface.c
View File

@ -357,11 +357,14 @@ static int ieee80211_open(struct net_device *dev)
if (err)
return err;
return ieee80211_do_open(&sdata->wdev, true);
wiphy_lock(sdata->local->hw.wiphy);
err = ieee80211_do_open(&sdata->wdev, true);
wiphy_unlock(sdata->local->hw.wiphy);
return err;
}
static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
bool going_down)
static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata, bool going_down)
{
struct ieee80211_local *local = sdata->local;
unsigned long flags;
@ -637,7 +640,9 @@ static int ieee80211_stop(struct net_device *dev)
{
struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
wiphy_lock(sdata->local->hw.wiphy);
ieee80211_do_stop(sdata, true);
wiphy_unlock(sdata->local->hw.wiphy);
return 0;
}
@ -765,7 +770,7 @@ static const struct net_device_ops ieee80211_dataif_8023_ops = {
.ndo_get_stats64 = ieee80211_get_stats64,
};
static bool ieee80211_iftype_supports_encap_offload(enum nl80211_iftype iftype)
static bool ieee80211_iftype_supports_hdr_offload(enum nl80211_iftype iftype)
{
switch (iftype) {
/* P2P GO and client are mapped to AP/STATION types */
@ -785,7 +790,7 @@ static bool ieee80211_set_sdata_offload_flags(struct ieee80211_sub_if_data *sdat
flags = sdata->vif.offload_flags;
if (ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD) &&
ieee80211_iftype_supports_encap_offload(sdata->vif.type)) {
ieee80211_iftype_supports_hdr_offload(sdata->vif.type)) {
flags |= IEEE80211_OFFLOAD_ENCAP_ENABLED;
if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_FRAG) &&
@ -798,10 +803,21 @@ static bool ieee80211_set_sdata_offload_flags(struct ieee80211_sub_if_data *sdat
flags &= ~IEEE80211_OFFLOAD_ENCAP_ENABLED;
}
if (ieee80211_hw_check(&local->hw, SUPPORTS_RX_DECAP_OFFLOAD) &&
ieee80211_iftype_supports_hdr_offload(sdata->vif.type)) {
flags |= IEEE80211_OFFLOAD_DECAP_ENABLED;
if (local->monitors)
flags &= ~IEEE80211_OFFLOAD_DECAP_ENABLED;
} else {
flags &= ~IEEE80211_OFFLOAD_DECAP_ENABLED;
}
if (sdata->vif.offload_flags == flags)
return false;
sdata->vif.offload_flags = flags;
ieee80211_check_fast_rx_iface(sdata);
return true;
}
@ -819,7 +835,7 @@ static void ieee80211_set_vif_encap_ops(struct ieee80211_sub_if_data *sdata)
}
if (!ieee80211_hw_check(&local->hw, SUPPORTS_TX_ENCAP_OFFLOAD) ||
!ieee80211_iftype_supports_encap_offload(bss->vif.type))
!ieee80211_iftype_supports_hdr_offload(bss->vif.type))
return;
enabled = bss->vif.offload_flags & IEEE80211_OFFLOAD_ENCAP_ENABLED;
@ -1965,7 +1981,7 @@ int ieee80211_if_add(struct ieee80211_local *local, const char *name,
ndev->min_mtu = 256;
ndev->max_mtu = local->hw.max_mtu;
ret = register_netdevice(ndev);
ret = cfg80211_register_netdevice(ndev);
if (ret) {
free_netdev(ndev);
return ret;
@ -1995,10 +2011,9 @@ void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata)
synchronize_rcu();
if (sdata->dev) {
unregister_netdevice(sdata->dev);
} else {
cfg80211_unregister_wdev(&sdata->wdev);
cfg80211_unregister_wdev(&sdata->wdev);
if (!sdata->dev) {
ieee80211_teardown_sdata(sdata);
kfree(sdata);
}
@ -2047,13 +2062,16 @@ void ieee80211_remove_interfaces(struct ieee80211_local *local)
list_add(&sdata->list, &wdev_list);
}
mutex_unlock(&local->iflist_mtx);
unregister_netdevice_many(&unreg_list);
wiphy_lock(local->hw.wiphy);
list_for_each_entry_safe(sdata, tmp, &wdev_list, list) {
list_del(&sdata->list);
cfg80211_unregister_wdev(&sdata->wdev);
kfree(sdata);
}
wiphy_unlock(local->hw.wiphy);
}
static int netdev_notify(struct notifier_block *nb,

4
net/mac80211/key.c
View File

@ -887,7 +887,7 @@ void ieee80211_reenable_keys(struct ieee80211_sub_if_data *sdata)
struct ieee80211_key *key;
struct ieee80211_sub_if_data *vlan;
ASSERT_RTNL();
lockdep_assert_wiphy(sdata->local->hw.wiphy);
mutex_lock(&sdata->local->key_mtx);
@ -924,7 +924,7 @@ void ieee80211_iter_keys(struct ieee80211_hw *hw,
struct ieee80211_key *key, *tmp;
struct ieee80211_sub_if_data *sdata;
ASSERT_RTNL();
lockdep_assert_wiphy(hw->wiphy);
mutex_lock(&local->key_mtx);
if (vif) {

5
net/mac80211/main.c
View File

@ -261,7 +261,9 @@ static void ieee80211_restart_work(struct work_struct *work)
"%s called with hardware scan in progress\n", __func__);
flush_work(&local->radar_detected_work);
/* we might do interface manipulations, so need both */
rtnl_lock();
wiphy_lock(local->hw.wiphy);
list_for_each_entry(sdata, &local->interfaces, list) {
/*
* XXX: there may be more work for other vif types and even
@ -293,6 +295,7 @@ static void ieee80211_restart_work(struct work_struct *work)
synchronize_net();
ieee80211_reconfig(local);
wiphy_unlock(local->hw.wiphy);
rtnl_unlock();
}
@ -1272,6 +1275,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
rate_control_add_debugfs(local);
rtnl_lock();
wiphy_lock(hw->wiphy);
/* add one default STA interface if supported */
if (local->hw.wiphy->interface_modes & BIT(NL80211_IFTYPE_STATION) &&
@ -1285,6 +1289,7 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
"Failed to add default virtual iface\n");
}
wiphy_unlock(hw->wiphy);
rtnl_unlock();
#ifdef CONFIG_INET

6
net/mac80211/pm.c
View File

@ -1,4 +1,8 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Portions
* Copyright (C) 2020-2021 Intel Corporation
*/
#include <net/mac80211.h>
#include <net/rtnetlink.h>
@ -11,7 +15,7 @@ static void ieee80211_sched_scan_cancel(struct ieee80211_local *local)
{
if (ieee80211_request_sched_scan_stop(local))
return;
cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
}
int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)

574
net/mac80211/rc80211_minstrel.c
View File

@ -1,574 +0,0 @@
/*
* Copyright (C) 2008 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.
*
* Based on minstrel.c:
* Copyright (C) 2005-2007 Derek Smithies <derek@indranet.co.nz>
* Sponsored by Indranet Technologies Ltd
*
* Based on sample.c:
* Copyright (c) 2005 John Bicket
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGES.
*/
#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 <linux/slab.h>
#include <net/mac80211.h>
#include "rate.h"
#include "rc80211_minstrel.h"
#define SAMPLE_TBL(_mi, _idx, _col) \
_mi->sample_table[(_idx * SAMPLE_COLUMNS) + _col]
/* convert mac80211 rate index to local array index */
static inline int
rix_to_ndx(struct minstrel_sta_info *mi, int rix)
{
int i = rix;
for (i = rix; i >= 0; i--)
if (mi->r[i].rix == rix)
break;
return i;
}
/* return current EMWA throughput */
int minstrel_get_tp_avg(struct minstrel_rate *mr, int prob_avg)
{
int usecs;
usecs = mr->perfect_tx_time;
if (!usecs)
usecs = 1000000;
/* reset thr. below 10% success */
if (mr->stats.prob_avg < MINSTREL_FRAC(10, 100))
return 0;
if (prob_avg > MINSTREL_FRAC(90, 100))
return MINSTREL_TRUNC(100000 * (MINSTREL_FRAC(90, 100) / usecs));
else
return MINSTREL_TRUNC(100000 * (prob_avg / usecs));
}
/* find & sort topmost throughput rates */
static inline void
minstrel_sort_best_tp_rates(struct minstrel_sta_info *mi, int i, u8 *tp_list)
{
int j;
struct minstrel_rate_stats *tmp_mrs;
struct minstrel_rate_stats *cur_mrs = &mi->r[i].stats;
for (j = MAX_THR_RATES; j > 0; --j) {
tmp_mrs = &mi->r[tp_list[j - 1]].stats;
if (minstrel_get_tp_avg(&mi->r[i], cur_mrs->prob_avg) <=
minstrel_get_tp_avg(&mi->r[tp_list[j - 1]], tmp_mrs->prob_avg))
break;
}
if (j < MAX_THR_RATES - 1)
memmove(&tp_list[j + 1], &tp_list[j], MAX_THR_RATES - (j + 1));
if (j < MAX_THR_RATES)
tp_list[j] = i;
}
static void
minstrel_set_rate(struct minstrel_sta_info *mi, struct ieee80211_sta_rates *ratetbl,
int offset, int idx)
{
struct minstrel_rate *r = &mi->r[idx];
ratetbl->rate[offset].idx = r->rix;
ratetbl->rate[offset].count = r->adjusted_retry_count;
ratetbl->rate[offset].count_cts = r->retry_count_cts;
ratetbl->rate[offset].count_rts = r->stats.retry_count_rtscts;
}
static void
minstrel_update_rates(struct minstrel_priv *mp, struct minstrel_sta_info *mi)
{
struct ieee80211_sta_rates *ratetbl;
int i = 0;
ratetbl = kzalloc(sizeof(*ratetbl), GFP_ATOMIC);
if (!ratetbl)
return;
/* Start with max_tp_rate */
minstrel_set_rate(mi, ratetbl, i++, mi->max_tp_rate[0]);
if (mp->hw->max_rates >= 3) {
/* At least 3 tx rates supported, use max_tp_rate2 next */
minstrel_set_rate(mi, ratetbl, i++, mi->max_tp_rate[1]);
}
if (mp->hw->max_rates >= 2) {
/* At least 2 tx rates supported, use max_prob_rate next */
minstrel_set_rate(mi, ratetbl, i++, mi->max_prob_rate);
}
/* Use lowest rate last */
ratetbl->rate[i].idx = mi->lowest_rix;
ratetbl->rate[i].count = mp->max_retry;
ratetbl->rate[i].count_cts = mp->max_retry;
ratetbl->rate[i].count_rts = mp->max_retry;
rate_control_set_rates(mp->hw, mi->sta, ratetbl);
}
/*
* Recalculate statistics and counters of a given rate
*/
void
minstrel_calc_rate_stats(struct minstrel_priv *mp,
struct minstrel_rate_stats *mrs)
{
unsigned int cur_prob;
if (unlikely(mrs->attempts > 0)) {
mrs->sample_skipped = 0;
cur_prob = MINSTREL_FRAC(mrs->success, mrs->attempts);
if (mp->new_avg) {
minstrel_filter_avg_add(&mrs->prob_avg,
&mrs->prob_avg_1, cur_prob);
} else if (unlikely(!mrs->att_hist)) {
mrs->prob_avg = cur_prob;
} else {
/*update exponential weighted moving avarage */
mrs->prob_avg = minstrel_ewma(mrs->prob_avg,
cur_prob,
EWMA_LEVEL);
}
mrs->att_hist += mrs->attempts;
mrs->succ_hist += mrs->success;
} else {
mrs->sample_skipped++;
}
mrs->last_success = mrs->success;
mrs->last_attempts = mrs->attempts;
mrs->success = 0;
mrs->attempts = 0;
}
static void
minstrel_update_stats(struct minstrel_priv *mp, struct minstrel_sta_info *mi)
{
u8 tmp_tp_rate[MAX_THR_RATES];
u8 tmp_prob_rate = 0;
int i, tmp_cur_tp, tmp_prob_tp;
for (i = 0; i < MAX_THR_RATES; i++)
tmp_tp_rate[i] = 0;
for (i = 0; i < mi->n_rates; i++) {
struct minstrel_rate *mr = &mi->r[i];
struct minstrel_rate_stats *mrs = &mi->r[i].stats;
struct minstrel_rate_stats *tmp_mrs = &mi->r[tmp_prob_rate].stats;
/* Update statistics of success probability per rate */
minstrel_calc_rate_stats(mp, mrs);
/* Sample less often below the 10% chance of success.
* Sample less often above the 95% chance of success. */
if (mrs->prob_avg > MINSTREL_FRAC(95, 100) ||
mrs->prob_avg < MINSTREL_FRAC(10, 100)) {
mr->adjusted_retry_count = mrs->retry_count >> 1;
if (mr->adjusted_retry_count > 2)
mr->adjusted_retry_count = 2;
mr->sample_limit = 4;
} else {
mr->sample_limit = -1;
mr->adjusted_retry_count = mrs->retry_count;
}
if (!mr->adjusted_retry_count)
mr->adjusted_retry_count = 2;
minstrel_sort_best_tp_rates(mi, i, tmp_tp_rate);
/* To determine the most robust rate (max_prob_rate) used at
* 3rd mmr stage we distinct between two cases:
* (1) if any success probabilitiy >= 95%, out of those rates
* choose the maximum throughput rate as max_prob_rate
* (2) if all success probabilities < 95%, the rate with
* highest success probability is chosen as max_prob_rate */
if (mrs->prob_avg >= MINSTREL_FRAC(95, 100)) {
tmp_cur_tp = minstrel_get_tp_avg(mr, mrs->prob_avg);
tmp_prob_tp = minstrel_get_tp_avg(&mi->r[tmp_prob_rate],
tmp_mrs->prob_avg);
if (tmp_cur_tp >= tmp_prob_tp)
tmp_prob_rate = i;
} else {
if (mrs->prob_avg >= tmp_mrs->prob_avg)
tmp_prob_rate = i;
}
}
/* Assign the new rate set */
memcpy(mi->max_tp_rate, tmp_tp_rate, sizeof(mi->max_tp_rate));
mi->max_prob_rate = tmp_prob_rate;
#ifdef CONFIG_MAC80211_DEBUGFS
/* use fixed index if set */
if (mp->fixed_rate_idx != -1) {
mi->max_tp_rate[0] = mp->fixed_rate_idx;
mi->max_tp_rate[1] = mp->fixed_rate_idx;
mi->max_prob_rate = mp->fixed_rate_idx;
}
#endif
/* Reset update timer */
mi->last_stats_update = jiffies;
minstrel_update_rates(mp, mi);
}
static void
minstrel_tx_status(void *priv, struct ieee80211_supported_band *sband,
void *priv_sta, struct ieee80211_tx_status *st)
{
struct ieee80211_tx_info *info = st->info;
struct minstrel_priv *mp = priv;
struct minstrel_sta_info *mi = priv_sta;
struct ieee80211_tx_rate *ar = info->status.rates;
int i, ndx;
int success;
success = !!(info->flags & IEEE80211_TX_STAT_ACK);
for (i = 0; i < IEEE80211_TX_MAX_RATES; i++) {
if (ar[i].idx < 0 || !ar[i].count)
break;
ndx = rix_to_ndx(mi, ar[i].idx);
if (ndx < 0)
continue;
mi->r[ndx].stats.attempts += ar[i].count;
if ((i != IEEE80211_TX_MAX_RATES - 1) && (ar[i + 1].idx < 0))
mi->r[ndx].stats.success += success;
}
if (time_after(jiffies, mi->last_stats_update +
mp->update_interval / (mp->new_avg ? 2 : 1)))
minstrel_update_stats(mp, mi);
}
static inline unsigned int
minstrel_get_retry_count(struct minstrel_rate *mr,
struct ieee80211_tx_info *info)
{
u8 retry = mr->adjusted_retry_count;
if (info->control.use_rts)
retry = max_t(u8, 2, min(mr->stats.retry_count_rtscts, retry));
else if (info->control.use_cts_prot)
retry = max_t(u8, 2, min(mr->retry_count_cts, retry));
return retry;
}
static int
minstrel_get_next_sample(struct minstrel_sta_info *mi)
{
unsigned int sample_ndx;
sample_ndx = SAMPLE_TBL(mi, mi->sample_row, mi->sample_column);
mi->sample_row++;
if ((int) mi->sample_row >= mi->n_rates) {
mi->sample_row = 0;
mi->sample_column++;
if (mi->sample_column >= SAMPLE_COLUMNS)
mi->sample_column = 0;
}
return sample_ndx;
}
static void
minstrel_get_rate(void *priv, struct ieee80211_sta *sta,
void *priv_sta, struct ieee80211_tx_rate_control *txrc)
{
struct sk_buff *skb = txrc->skb;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct minstrel_sta_info *mi = priv_sta;
struct minstrel_priv *mp = priv;
struct ieee80211_tx_rate *rate = &info->control.rates[0];
struct minstrel_rate *msr, *mr;
unsigned int ndx;
bool mrr_capable;
bool prev_sample;
int delta;
int sampling_ratio;
/* check multi-rate-retry capabilities & adjust lookaround_rate */
mrr_capable = mp->has_mrr &&
!txrc->rts &&
!txrc->bss_conf->use_cts_prot;
if (mrr_capable)
sampling_ratio = mp->lookaround_rate_mrr;
else
sampling_ratio = mp->lookaround_rate;
/* increase sum packet counter */
mi->total_packets++;
#ifdef CONFIG_MAC80211_DEBUGFS
if (mp->fixed_rate_idx != -1)
return;
#endif
/* Don't use EAPOL frames for sampling on non-mrr hw */
if (mp->hw->max_rates == 1 &&
(info->control.flags & IEEE80211_TX_CTRL_PORT_CTRL_PROTO))
return;
delta = (mi->total_packets * sampling_ratio / 100) -
mi->sample_packets;
/* delta < 0: no sampling required */
prev_sample = mi->prev_sample;
mi->prev_sample = false;
if (delta < 0 || (!mrr_capable && prev_sample))
return;
if (mi->total_packets >= 10000) {
mi->sample_packets = 0;
mi->total_packets = 0;
} else if (delta > mi->n_rates * 2) {
/* With multi-rate retry, not every planned sample
* attempt actually gets used, due to the way the retry
* chain is set up - [max_tp,sample,prob,lowest] for
* sample_rate < max_tp.
*
* If there's too much sampling backlog and the link
* starts getting worse, minstrel would start bursting
* out lots of sampling frames, which would result
* in a large throughput loss. */
mi->sample_packets += (delta - mi->n_rates * 2);
}
/* get next random rate sample */
ndx = minstrel_get_next_sample(mi);
msr = &mi->r[ndx];
mr = &mi->r[mi->max_tp_rate[0]];
/* Decide if direct ( 1st mrr stage) or indirect (2nd mrr stage)
* rate sampling method should be used.
* Respect such rates that are not sampled for 20 interations.
*/
if (msr->perfect_tx_time < mr->perfect_tx_time ||
msr->stats.sample_skipped >= 20) {
if (!msr->sample_limit)
return;
mi->sample_packets++;
if (msr->sample_limit > 0)
msr->sample_limit--;
}
/* If we're not using MRR and the sampling rate already
* has a probability of >95%, we shouldn't be attempting
* to use it, as this only wastes precious airtime */
if (!mrr_capable &&
(mi->r[ndx].stats.prob_avg > MINSTREL_FRAC(95, 100)))
return;
mi->prev_sample = true;
rate->idx = mi->r[ndx].rix;
rate->count = minstrel_get_retry_count(&mi->r[ndx], info);
info->flags |= IEEE80211_TX_CTL_RATE_CTRL_PROBE;
}
static void
calc_rate_durations(enum nl80211_band band,
struct minstrel_rate *d,
struct ieee80211_rate *rate,
struct cfg80211_chan_def *chandef)
{
int erp = !!(rate->flags & IEEE80211_RATE_ERP_G);
int shift = ieee80211_chandef_get_shift(chandef);
d->perfect_tx_time = ieee80211_frame_duration(band, 1200,
DIV_ROUND_UP(rate->bitrate, 1 << shift), erp, 1,
shift);
d->ack_time = ieee80211_frame_duration(band, 10,
DIV_ROUND_UP(rate->bitrate, 1 << shift), erp, 1,
shift);
}
static void
init_sample_table(struct minstrel_sta_info *mi)
{
unsigned int i, col, new_idx;
u8 rnd[8];
mi->sample_column = 0;
mi->sample_row = 0;
memset(mi->sample_table, 0xff, SAMPLE_COLUMNS * mi->n_rates);
for (col = 0; col < SAMPLE_COLUMNS; col++) {
prandom_bytes(rnd, sizeof(rnd));
for (i = 0; i < mi->n_rates; i++) {
new_idx = (i + rnd[i & 7]) % mi->n_rates;
while (SAMPLE_TBL(mi, new_idx, col) != 0xff)
new_idx = (new_idx + 1) % mi->n_rates;
SAMPLE_TBL(mi, new_idx, col) = i;
}
}
}
static void
minstrel_rate_init(void *priv, struct ieee80211_supported_band *sband,
struct cfg80211_chan_def *chandef,
struct ieee80211_sta *sta, void *priv_sta)
{
struct minstrel_sta_info *mi = priv_sta;
struct minstrel_priv *mp = priv;
struct ieee80211_rate *ctl_rate;
unsigned int i, n = 0;
unsigned int t_slot = 9; /* FIXME: get real slot time */
u32 rate_flags;
mi->sta = sta;
mi->lowest_rix = rate_lowest_index(sband, sta);
ctl_rate = &sband->bitrates[mi->lowest_rix];
mi->sp_ack_dur = ieee80211_frame_duration(sband->band, 10,
ctl_rate->bitrate,
!!(ctl_rate->flags & IEEE80211_RATE_ERP_G), 1,
ieee80211_chandef_get_shift(chandef));
rate_flags = ieee80211_chandef_rate_flags(&mp->hw->conf.chandef);
memset(mi->max_tp_rate, 0, sizeof(mi->max_tp_rate));
mi->max_prob_rate = 0;
for (i = 0; i < sband->n_bitrates; i++) {
struct minstrel_rate *mr = &mi->r[n];
struct minstrel_rate_stats *mrs = &mi->r[n].stats;
unsigned int tx_time = 0, tx_time_cts = 0, tx_time_rtscts = 0;
unsigned int tx_time_single;
unsigned int cw = mp->cw_min;
int shift;
if (!rate_supported(sta, sband->band, i))
continue;
if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
continue;
n++;
memset(mr, 0, sizeof(*mr));
memset(mrs, 0, sizeof(*mrs));
mr->rix = i;
shift = ieee80211_chandef_get_shift(chandef);
mr->bitrate = DIV_ROUND_UP(sband->bitrates[i].bitrate,
(1 << shift) * 5);
calc_rate_durations(sband->band, mr, &sband->bitrates[i],
chandef);
/* calculate maximum number of retransmissions before
* fallback (based on maximum segment size) */
mr->sample_limit = -1;
mrs->retry_count = 1;
mr->retry_count_cts = 1;
mrs->retry_count_rtscts = 1;
tx_time = mr->perfect_tx_time + mi->sp_ack_dur;
do {
/* add one retransmission */
tx_time_single = mr->ack_time + mr->perfect_tx_time;
/* contention window */
tx_time_single += (t_slot * cw) >> 1;
cw = min((cw << 1) | 1, mp->cw_max);
tx_time += tx_time_single;
tx_time_cts += tx_time_single + mi->sp_ack_dur;
tx_time_rtscts += tx_time_single + 2 * mi->sp_ack_dur;
if ((tx_time_cts < mp->segment_size) &&
(mr->retry_count_cts < mp->max_retry))
mr->retry_count_cts++;
if ((tx_time_rtscts < mp->segment_size) &&
(mrs->retry_count_rtscts < mp->max_retry))
mrs->retry_count_rtscts++;
} while ((tx_time < mp->segment_size) &&
(++mr->stats.retry_count < mp->max_retry));
mr->adjusted_retry_count = mrs->retry_count;
if (!(sband->bitrates[i].flags & IEEE80211_RATE_ERP_G))
mr->retry_count_cts = mrs->retry_count;
}
for (i = n; i < sband->n_bitrates; i++) {
struct minstrel_rate *mr = &mi->r[i];
mr->rix = -1;
}
mi->n_rates = n;
mi->last_stats_update = jiffies;
init_sample_table(mi);
minstrel_update_rates(mp, mi);
}
static u32 minstrel_get_expected_throughput(void *priv_sta)
{
struct minstrel_sta_info *mi = priv_sta;
struct minstrel_rate_stats *tmp_mrs;
int idx = mi->max_tp_rate[0];
int tmp_cur_tp;
/* convert pkt per sec in kbps (1200 is the average pkt size used for
* computing cur_tp
*/
tmp_mrs = &mi->r[idx].stats;
tmp_cur_tp = minstrel_get_tp_avg(&mi->r[idx], tmp_mrs->prob_avg) * 10;
tmp_cur_tp = tmp_cur_tp * 1200 * 8 / 1024;
return tmp_cur_tp;
}
const struct rate_control_ops mac80211_minstrel = {
.tx_status_ext = minstrel_tx_status,
.get_rate = minstrel_get_rate,
.rate_init = minstrel_rate_init,
.get_expected_throughput = minstrel_get_expected_throughput,
};

184
net/mac80211/rc80211_minstrel.h
View File

@ -1,184 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
*/
#ifndef __RC_MINSTREL_H
#define __RC_MINSTREL_H
#define EWMA_LEVEL 96 /* ewma weighting factor [/EWMA_DIV] */
#define EWMA_DIV 128
#define SAMPLE_COLUMNS 10 /* number of columns in sample table */
/* scaled fraction values */
#define MINSTREL_SCALE 12
#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div)
#define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE)
/* number of highest throughput rates to consider*/
#define MAX_THR_RATES 4
/*
* Coefficients for moving average with noise filter (period=16),
* scaled by 10 bits
*
* a1 = exp(-pi * sqrt(2) / period)
* coeff2 = 2 * a1 * cos(sqrt(2) * 2 * pi / period)
* coeff3 = -sqr(a1)
* coeff1 = 1 - coeff2 - coeff3
*/
#define MINSTREL_AVG_COEFF1 (MINSTREL_FRAC(1, 1) - \
MINSTREL_AVG_COEFF2 - \
MINSTREL_AVG_COEFF3)
#define MINSTREL_AVG_COEFF2 0x00001499
#define MINSTREL_AVG_COEFF3 -0x0000092e
/*
* Perform EWMA (Exponentially Weighted Moving Average) calculation
*/
static inline int
minstrel_ewma(int old, int new, int weight)
{
int diff, incr;
diff = new - old;
incr = (EWMA_DIV - weight) * diff / EWMA_DIV;
return old + incr;
}
static inline int minstrel_filter_avg_add(u16 *prev_1, u16 *prev_2, s32 in)
{
s32 out_1 = *prev_1;
s32 out_2 = *prev_2;
s32 val;
if (!in)
in += 1;
if (!out_1) {
val = out_1 = in;
goto out;
}
val = MINSTREL_AVG_COEFF1 * in;
val += MINSTREL_AVG_COEFF2 * out_1;
val += MINSTREL_AVG_COEFF3 * out_2;
val >>= MINSTREL_SCALE;
if (val > 1 << MINSTREL_SCALE)
val = 1 << MINSTREL_SCALE;
if (val < 0)
val = 1;
out:
*prev_2 = out_1;
*prev_1 = val;
return val;
}
struct minstrel_rate_stats {
/* current / last sampling period attempts/success counters */
u16 attempts, last_attempts;
u16 success, last_success;
/* total attempts/success counters */
u32 att_hist, succ_hist;
/* prob_avg - moving average of prob */
u16 prob_avg;
u16 prob_avg_1;
/* maximum retry counts */
u8 retry_count;
u8 retry_count_rtscts;
u8 sample_skipped;
bool retry_updated;
};
struct minstrel_rate {
int bitrate;
s8 rix;
u8 retry_count_cts;
u8 adjusted_retry_count;
unsigned int perfect_tx_time;
unsigned int ack_time;
int sample_limit;
struct minstrel_rate_stats stats;
};
struct minstrel_sta_info {
struct ieee80211_sta *sta;
unsigned long last_stats_update;
unsigned int sp_ack_dur;
unsigned int rate_avg;
unsigned int lowest_rix;
u8 max_tp_rate[MAX_THR_RATES];
u8 max_prob_rate;
unsigned int total_packets;
unsigned int sample_packets;
unsigned int sample_row;
unsigned int sample_column;
int n_rates;
struct minstrel_rate *r;
bool prev_sample;
/* sampling table */
u8 *sample_table;
};
struct minstrel_priv {
struct ieee80211_hw *hw;
bool has_mrr;
bool new_avg;
u32 sample_switch;
unsigned int cw_min;
unsigned int cw_max;
unsigned int max_retry;
unsigned int segment_size;
unsigned int update_interval;
unsigned int lookaround_rate;
unsigned int lookaround_rate_mrr;
u8 cck_rates[4];
#ifdef CONFIG_MAC80211_DEBUGFS
/*
* enable fixed rate processing per RC
* - write static index to debugfs:ieee80211/phyX/rc/fixed_rate_idx
* - write -1 to enable RC processing again
* - setting will be applied on next update
*/
u32 fixed_rate_idx;
#endif
};
struct minstrel_debugfs_info {
size_t len;
char buf[];
};
extern const struct rate_control_ops mac80211_minstrel;
void minstrel_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
/* Recalculate success probabilities and counters for a given rate using EWMA */
void minstrel_calc_rate_stats(struct minstrel_priv *mp,
struct minstrel_rate_stats *mrs);
int minstrel_get_tp_avg(struct minstrel_rate *mr, int prob_avg);
/* debugfs */
int minstrel_stats_open(struct inode *inode, struct file *file);
int minstrel_stats_csv_open(struct inode *inode, struct file *file);
#endif

172
net/mac80211/rc80211_minstrel_debugfs.c
View File

@ -1,172 +0,0 @@
/*
* Copyright (C) 2008 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.
*
* Based on minstrel.c:
* Copyright (C) 2005-2007 Derek Smithies <derek@indranet.co.nz>
* Sponsored by Indranet Technologies Ltd
*
* Based on sample.c:
* Copyright (c) 2005 John Bicket
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* without modification.
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
* redistribution must be conditioned upon including a substantially
* similar Disclaimer requirement for further binary redistribution.
* 3. Neither the names of the above-listed copyright holders nor the names
* of any contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*
* NO WARRANTY
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGES.
*/
#include <linux/netdevice.h>
#include <linux/types.h>
#include <linux/skbuff.h>
#include <linux/debugfs.h>
#include <linux/ieee80211.h>
#include <linux/slab.h>
#include <linux/export.h>
#include <net/mac80211.h>
#include "rc80211_minstrel.h"
int
minstrel_stats_open(struct inode *inode, struct file *file)
{
struct minstrel_sta_info *mi = inode->i_private;
struct minstrel_debugfs_info *ms;
unsigned int i, tp_max, tp_avg, eprob;
char *p;
ms = kmalloc(2048, GFP_KERNEL);
if (!ms)
return -ENOMEM;
file->private_data = ms;
p = ms->buf;
p += sprintf(p, "\n");
p += sprintf(p,
"best __________rate_________ ____statistics___ ____last_____ ______sum-of________\n");
p += sprintf(p,
"rate [name idx airtime max_tp] [avg(tp) avg(prob)] [retry|suc|att] [#success | #attempts]\n");
for (i = 0; i < mi->n_rates; i++) {
struct minstrel_rate *mr = &mi->r[i];
struct minstrel_rate_stats *mrs = &mi->r[i].stats;
*(p++) = (i == mi->max_tp_rate[0]) ? 'A' : ' ';
*(p++) = (i == mi->max_tp_rate[1]) ? 'B' : ' ';
*(p++) = (i == mi->max_tp_rate[2]) ? 'C' : ' ';
*(p++) = (i == mi->max_tp_rate[3]) ? 'D' : ' ';
*(p++) = (i == mi->max_prob_rate) ? 'P' : ' ';
p += sprintf(p, " %3u%s ", mr->bitrate / 2,
(mr->bitrate & 1 ? ".5" : " "));
p += sprintf(p, "%3u ", i);
p += sprintf(p, "%6u ", mr->perfect_tx_time);
tp_max = minstrel_get_tp_avg(mr, MINSTREL_FRAC(100,100));
tp_avg = minstrel_get_tp_avg(mr, mrs->prob_avg);
eprob = MINSTREL_TRUNC(mrs->prob_avg * 1000);
p += sprintf(p, "%4u.%1u %4u.%1u %3u.%1u"
" %3u %3u %-3u "
"%9llu %-9llu\n",
tp_max / 10, tp_max % 10,
tp_avg / 10, tp_avg % 10,
eprob / 10, eprob % 10,
mrs->retry_count,
mrs->last_success,
mrs->last_attempts,
(unsigned long long)mrs->succ_hist,
(unsigned long long)mrs->att_hist);
}
p += sprintf(p, "\nTotal packet count:: ideal %d "
"lookaround %d\n\n",
mi->total_packets - mi->sample_packets,
mi->sample_packets);
ms->len = p - ms->buf;
WARN_ON(ms->len + sizeof(*ms) > 2048);
return 0;
}
int
minstrel_stats_csv_open(struct inode *inode, struct file *file)
{
struct minstrel_sta_info *mi = inode->i_private;
struct minstrel_debugfs_info *ms;
unsigned int i, tp_max, tp_avg, eprob;
char *p;
ms = kmalloc(2048, GFP_KERNEL);
if (!ms)
return -ENOMEM;
file->private_data = ms;
p = ms->buf;
for (i = 0; i < mi->n_rates; i++) {
struct minstrel_rate *mr = &mi->r[i];
struct minstrel_rate_stats *mrs = &mi->r[i].stats;
p += sprintf(p, "%s" ,((i == mi->max_tp_rate[0]) ? "A" : ""));
p += sprintf(p, "%s" ,((i == mi->max_tp_rate[1]) ? "B" : ""));
p += sprintf(p, "%s" ,((i == mi->max_tp_rate[2]) ? "C" : ""));
p += sprintf(p, "%s" ,((i == mi->max_tp_rate[3]) ? "D" : ""));
p += sprintf(p, "%s" ,((i == mi->max_prob_rate) ? "P" : ""));
p += sprintf(p, ",%u%s", mr->bitrate / 2,
(mr->bitrate & 1 ? ".5," : ","));
p += sprintf(p, "%u,", i);
p += sprintf(p, "%u,",mr->perfect_tx_time);
tp_max = minstrel_get_tp_avg(mr, MINSTREL_FRAC(100,100));
tp_avg = minstrel_get_tp_avg(mr, mrs->prob_avg);
eprob = MINSTREL_TRUNC(mrs->prob_avg * 1000);
p += sprintf(p, "%u.%u,%u.%u,%u.%u,%u,%u,%u,"
"%llu,%llu,%d,%d\n",
tp_max / 10, tp_max % 10,
tp_avg / 10, tp_avg % 10,
eprob / 10, eprob % 10,
mrs->retry_count,
mrs->last_success,
mrs->last_attempts,
(unsigned long long)mrs->succ_hist,
(unsigned long long)mrs->att_hist,
mi->total_packets - mi->sample_packets,
mi->sample_packets);
}
ms->len = p - ms->buf;
WARN_ON(ms->len + sizeof(*ms) > 2048);
return 0;
}

566
net/mac80211/rc80211_minstrel_ht.c
View File

@ -13,7 +13,6 @@
#include <net/mac80211.h>
#include "rate.h"
#include "sta_info.h"
#include "rc80211_minstrel.h"
#include "rc80211_minstrel_ht.h"
#define AVG_AMPDU_SIZE 16
@ -136,20 +135,16 @@
__VHT_GROUP(_streams, _sgi, _bw, \
VHT_GROUP_SHIFT(_streams, _sgi, _bw))
#define CCK_DURATION(_bitrate, _short, _len) \
#define CCK_DURATION(_bitrate, _short) \
(1000 * (10 /* SIFS */ + \
(_short ? 72 + 24 : 144 + 48) + \
(8 * (_len + 4) * 10) / (_bitrate)))
#define CCK_ACK_DURATION(_bitrate, _short) \
(CCK_DURATION((_bitrate > 10 ? 20 : 10), false, 60) + \
CCK_DURATION(_bitrate, _short, AVG_PKT_SIZE))
(8 * (AVG_PKT_SIZE + 4) * 10) / (_bitrate)))
#define CCK_DURATION_LIST(_short, _s) \
CCK_ACK_DURATION(10, _short) >> _s, \
CCK_ACK_DURATION(20, _short) >> _s, \
CCK_ACK_DURATION(55, _short) >> _s, \
CCK_ACK_DURATION(110, _short) >> _s
CCK_DURATION(10, _short) >> _s, \
CCK_DURATION(20, _short) >> _s, \
CCK_DURATION(55, _short) >> _s, \
CCK_DURATION(110, _short) >> _s
#define __CCK_GROUP(_s) \
[MINSTREL_CCK_GROUP] = { \
@ -163,10 +158,42 @@
}
#define CCK_GROUP_SHIFT \
GROUP_SHIFT(CCK_ACK_DURATION(10, false))
GROUP_SHIFT(CCK_DURATION(10, false))
#define CCK_GROUP __CCK_GROUP(CCK_GROUP_SHIFT)
#define OFDM_DURATION(_bitrate) \
(1000 * (16 /* SIFS + signal ext */ + \
16 /* T_PREAMBLE */ + \
4 /* T_SIGNAL */ + \
4 * (((16 + 80 * (AVG_PKT_SIZE + 4) + 6) / \
((_bitrate) * 4)))))
#define OFDM_DURATION_LIST(_s) \
OFDM_DURATION(60) >> _s, \
OFDM_DURATION(90) >> _s, \
OFDM_DURATION(120) >> _s, \
OFDM_DURATION(180) >> _s, \
OFDM_DURATION(240) >> _s, \
OFDM_DURATION(360) >> _s, \
OFDM_DURATION(480) >> _s, \
OFDM_DURATION(540) >> _s
#define __OFDM_GROUP(_s) \
[MINSTREL_OFDM_GROUP] = { \
.streams = 1, \
.flags = 0, \
.shift = _s, \
.duration = { \
OFDM_DURATION_LIST(_s), \
} \
}
#define OFDM_GROUP_SHIFT \
GROUP_SHIFT(OFDM_DURATION(60))
#define OFDM_GROUP __OFDM_GROUP(OFDM_GROUP_SHIFT)
static bool minstrel_vht_only = true;
module_param(minstrel_vht_only, bool, 0644);
@ -203,6 +230,7 @@ const struct mcs_group minstrel_mcs_groups[] = {
MCS_GROUP(4, 1, BW_40),
CCK_GROUP,
OFDM_GROUP,
VHT_GROUP(1, 0, BW_20),
VHT_GROUP(2, 0, BW_20),
@ -235,6 +263,8 @@ const struct mcs_group minstrel_mcs_groups[] = {
VHT_GROUP(4, 1, BW_80),
};
const s16 minstrel_cck_bitrates[4] = { 10, 20, 55, 110 };
const s16 minstrel_ofdm_bitrates[8] = { 60, 90, 120, 180, 240, 360, 480, 540 };
static u8 sample_table[SAMPLE_COLUMNS][MCS_GROUP_RATES] __read_mostly;
static void
@ -279,6 +309,13 @@ minstrel_get_valid_vht_rates(int bw, int nss, __le16 mcs_map)
return 0x3ff & ~mask;
}
static bool
minstrel_ht_is_legacy_group(int group)
{
return group == MINSTREL_CCK_GROUP ||
group == MINSTREL_OFDM_GROUP;
}
/*
* Look up an MCS group index based on mac80211 rate information
*/
@ -308,21 +345,34 @@ minstrel_ht_get_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
if (rate->flags & IEEE80211_TX_RC_MCS) {
group = minstrel_ht_get_group_idx(rate);
idx = rate->idx % 8;
} else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
goto out;
}
if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
group = minstrel_vht_get_group_idx(rate);
idx = ieee80211_rate_get_vht_mcs(rate);
} else {
group = MINSTREL_CCK_GROUP;
goto out;
}
for (idx = 0; idx < ARRAY_SIZE(mp->cck_rates); idx++)
if (rate->idx == mp->cck_rates[idx])
break;
group = MINSTREL_CCK_GROUP;
for (idx = 0; idx < ARRAY_SIZE(mp->cck_rates); idx++) {
if (rate->idx != mp->cck_rates[idx])
continue;
/* short preamble */
if ((mi->supported[group] & BIT(idx + 4)) &&
(rate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE))
idx += 4;
idx += 4;
goto out;
}
group = MINSTREL_OFDM_GROUP;
for (idx = 0; idx < ARRAY_SIZE(mp->ofdm_rates[0]); idx++)
if (rate->idx == mp->ofdm_rates[mi->band][idx])
goto out;
idx = 0;
out:
return &mi->groups[group].rates[idx];
}
@ -332,13 +382,37 @@ minstrel_get_ratestats(struct minstrel_ht_sta *mi, int index)
return &mi->groups[index / MCS_GROUP_RATES].rates[index % MCS_GROUP_RATES];
}
static inline int minstrel_get_duration(int index)
{
const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
unsigned int duration = group->duration[index % MCS_GROUP_RATES];
return duration << group->shift;
}
static unsigned int
minstrel_ht_avg_ampdu_len(struct minstrel_ht_sta *mi)
{
if (!mi->avg_ampdu_len)
return AVG_AMPDU_SIZE;
int duration;
return MINSTREL_TRUNC(mi->avg_ampdu_len);
if (mi->avg_ampdu_len)
return MINSTREL_TRUNC(mi->avg_ampdu_len);
if (minstrel_ht_is_legacy_group(mi->max_tp_rate[0] / MCS_GROUP_RATES))
return 1;
duration = minstrel_get_duration(mi->max_tp_rate[0]);
if (duration > 400 * 1000)
return 2;
if (duration > 250 * 1000)
return 4;
if (duration > 150 * 1000)
return 8;
return 16;
}
/*
@ -349,15 +423,19 @@ int
minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate,
int prob_avg)
{
unsigned int nsecs = 0;
unsigned int nsecs = 0, overhead = mi->overhead;
unsigned int ampdu_len = 1;
/* do not account throughput if sucess prob is below 10% */
if (prob_avg < MINSTREL_FRAC(10, 100))
return 0;
if (group != MINSTREL_CCK_GROUP)
nsecs = 1000 * mi->overhead / minstrel_ht_avg_ampdu_len(mi);
if (minstrel_ht_is_legacy_group(group))
overhead = mi->overhead_legacy;
else
ampdu_len = minstrel_ht_avg_ampdu_len(mi);
nsecs = 1000 * overhead / ampdu_len;
nsecs += minstrel_mcs_groups[group].duration[rate] <<
minstrel_mcs_groups[group].shift;
@ -367,10 +445,9 @@ minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate,
* (prob is scaled - see MINSTREL_FRAC above)
*/
if (prob_avg > MINSTREL_FRAC(90, 100))
return MINSTREL_TRUNC(100000 * ((MINSTREL_FRAC(90, 100) * 1000)
/ nsecs));
else
return MINSTREL_TRUNC(100000 * ((prob_avg * 1000) / nsecs));
prob_avg = MINSTREL_FRAC(90, 100);
return MINSTREL_TRUNC(100 * ((prob_avg * 1000000) / nsecs));
}
/*
@ -417,12 +494,13 @@ minstrel_ht_sort_best_tp_rates(struct minstrel_ht_sta *mi, u16 index,
* Find and set the topmost probability rate per sta and per group
*/
static void
minstrel_ht_set_best_prob_rate(struct minstrel_ht_sta *mi, u16 index)
minstrel_ht_set_best_prob_rate(struct minstrel_ht_sta *mi, u16 *dest, u16 index)
{
struct minstrel_mcs_group_data *mg;
struct minstrel_rate_stats *mrs;
int tmp_group, tmp_idx, tmp_tp_avg, tmp_prob;
int max_tp_group, cur_tp_avg, cur_group, cur_idx;
int max_tp_group, max_tp_idx, max_tp_prob;
int cur_tp_avg, cur_group, cur_idx;
int max_gpr_group, max_gpr_idx;
int max_gpr_tp_avg, max_gpr_prob;
@ -431,16 +509,24 @@ minstrel_ht_set_best_prob_rate(struct minstrel_ht_sta *mi, u16 index)
mg = &mi->groups[index / MCS_GROUP_RATES];
mrs = &mg->rates[index % MCS_GROUP_RATES];
tmp_group = mi->max_prob_rate / MCS_GROUP_RATES;
tmp_idx = mi->max_prob_rate % MCS_GROUP_RATES;
tmp_group = *dest / MCS_GROUP_RATES;
tmp_idx = *dest % MCS_GROUP_RATES;
tmp_prob = mi->groups[tmp_group].rates[tmp_idx].prob_avg;
tmp_tp_avg = minstrel_ht_get_tp_avg(mi, tmp_group, tmp_idx, tmp_prob);
/* if max_tp_rate[0] is from MCS_GROUP max_prob_rate get selected from
* MCS_GROUP as well as CCK_GROUP rates do not allow aggregation */
max_tp_group = mi->max_tp_rate[0] / MCS_GROUP_RATES;
if((index / MCS_GROUP_RATES == MINSTREL_CCK_GROUP) &&
(max_tp_group != MINSTREL_CCK_GROUP))
max_tp_idx = mi->max_tp_rate[0] % MCS_GROUP_RATES;
max_tp_prob = mi->groups[max_tp_group].rates[max_tp_idx].prob_avg;
if (minstrel_ht_is_legacy_group(index / MCS_GROUP_RATES) &&
!minstrel_ht_is_legacy_group(max_tp_group))
return;
/* skip rates faster than max tp rate with lower prob */
if (minstrel_get_duration(mi->max_tp_rate[0]) > minstrel_get_duration(index) &&
mrs->prob_avg < max_tp_prob)
return;
max_gpr_group = mg->max_group_prob_rate / MCS_GROUP_RATES;
@ -451,7 +537,7 @@ minstrel_ht_set_best_prob_rate(struct minstrel_ht_sta *mi, u16 index)
cur_tp_avg = minstrel_ht_get_tp_avg(mi, cur_group, cur_idx,
mrs->prob_avg);
if (cur_tp_avg > tmp_tp_avg)
mi->max_prob_rate = index;
*dest = index;
max_gpr_tp_avg = minstrel_ht_get_tp_avg(mi, max_gpr_group,
max_gpr_idx,
@ -460,7 +546,7 @@ minstrel_ht_set_best_prob_rate(struct minstrel_ht_sta *mi, u16 index)
mg->max_group_prob_rate = index;
} else {
if (mrs->prob_avg > tmp_prob)
mi->max_prob_rate = index;
*dest = index;
if (mrs->prob_avg > max_gpr_prob)
mg->max_group_prob_rate = index;
}
@ -476,13 +562,13 @@ minstrel_ht_set_best_prob_rate(struct minstrel_ht_sta *mi, u16 index)
static void
minstrel_ht_assign_best_tp_rates(struct minstrel_ht_sta *mi,
u16 tmp_mcs_tp_rate[MAX_THR_RATES],
u16 tmp_cck_tp_rate[MAX_THR_RATES])
u16 tmp_legacy_tp_rate[MAX_THR_RATES])
{
unsigned int tmp_group, tmp_idx, tmp_cck_tp, tmp_mcs_tp, tmp_prob;
int i;
tmp_group = tmp_cck_tp_rate[0] / MCS_GROUP_RATES;
tmp_idx = tmp_cck_tp_rate[0] % MCS_GROUP_RATES;
tmp_group = tmp_legacy_tp_rate[0] / MCS_GROUP_RATES;
tmp_idx = tmp_legacy_tp_rate[0] % MCS_GROUP_RATES;
tmp_prob = mi->groups[tmp_group].rates[tmp_idx].prob_avg;
tmp_cck_tp = minstrel_ht_get_tp_avg(mi, tmp_group, tmp_idx, tmp_prob);
@ -493,7 +579,7 @@ minstrel_ht_assign_best_tp_rates(struct minstrel_ht_sta *mi,
if (tmp_cck_tp > tmp_mcs_tp) {
for(i = 0; i < MAX_THR_RATES; i++) {
minstrel_ht_sort_best_tp_rates(mi, tmp_cck_tp_rate[i],
minstrel_ht_sort_best_tp_rates(mi, tmp_legacy_tp_rate[i],
tmp_mcs_tp_rate);
}
}
@ -511,6 +597,9 @@ minstrel_ht_prob_rate_reduce_streams(struct minstrel_ht_sta *mi)
int tmp_max_streams, group, tmp_idx, tmp_prob;
int tmp_tp = 0;
if (!mi->sta->ht_cap.ht_supported)
return;
tmp_max_streams = minstrel_mcs_groups[mi->max_tp_rate[0] /
MCS_GROUP_RATES].streams;
for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) {
@ -531,14 +620,6 @@ minstrel_ht_prob_rate_reduce_streams(struct minstrel_ht_sta *mi)
}
}
static inline int
minstrel_get_duration(int index)
{
const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
unsigned int duration = group->duration[index % MCS_GROUP_RATES];
return duration << group->shift;
}
static bool
minstrel_ht_probe_group(struct minstrel_ht_sta *mi, const struct mcs_group *tp_group,
int tp_idx, const struct mcs_group *group)
@ -658,6 +739,74 @@ minstrel_ht_rate_sample_switch(struct minstrel_priv *mp,
mi->sample_mode = MINSTREL_SAMPLE_ACTIVE;
}
static inline int
minstrel_ewma(int old, int new, int weight)
{
int diff, incr;
diff = new - old;
incr = (EWMA_DIV - weight) * diff / EWMA_DIV;
return old + incr;
}
static inline int minstrel_filter_avg_add(u16 *prev_1, u16 *prev_2, s32 in)
{
s32 out_1 = *prev_1;
s32 out_2 = *prev_2;
s32 val;
if (!in)
in += 1;
if (!out_1) {
val = out_1 = in;
goto out;
}
val = MINSTREL_AVG_COEFF1 * in;
val += MINSTREL_AVG_COEFF2 * out_1;
val += MINSTREL_AVG_COEFF3 * out_2;
val >>= MINSTREL_SCALE;
if (val > 1 << MINSTREL_SCALE)
val = 1 << MINSTREL_SCALE;
if (val < 0)
val = 1;
out:
*prev_2 = out_1;
*prev_1 = val;
return val;
}
/*
* Recalculate statistics and counters of a given rate
*/
static void
minstrel_ht_calc_rate_stats(struct minstrel_priv *mp,
struct minstrel_rate_stats *mrs)
{
unsigned int cur_prob;
if (unlikely(mrs->attempts > 0)) {
mrs->sample_skipped = 0;
cur_prob = MINSTREL_FRAC(mrs->success, mrs->attempts);
minstrel_filter_avg_add(&mrs->prob_avg,
&mrs->prob_avg_1, cur_prob);
mrs->att_hist += mrs->attempts;
mrs->succ_hist += mrs->success;
} else {
mrs->sample_skipped++;
}
mrs->last_success = mrs->success;
mrs->last_attempts = mrs->attempts;
mrs->success = 0;
mrs->attempts = 0;
}
/*
* Update rate statistics and select new primary rates
*
@ -675,7 +824,9 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
struct minstrel_rate_stats *mrs;
int group, i, j, cur_prob;
u16 tmp_mcs_tp_rate[MAX_THR_RATES], tmp_group_tp_rate[MAX_THR_RATES];
u16 tmp_cck_tp_rate[MAX_THR_RATES], index;
u16 tmp_legacy_tp_rate[MAX_THR_RATES], tmp_max_prob_rate;
u16 index;
bool ht_supported = mi->sta->ht_cap.ht_supported;
mi->sample_mode = MINSTREL_SAMPLE_IDLE;
@ -704,21 +855,30 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
mi->sample_count = 0;
memset(tmp_mcs_tp_rate, 0, sizeof(tmp_mcs_tp_rate));
memset(tmp_cck_tp_rate, 0, sizeof(tmp_cck_tp_rate));
memset(tmp_legacy_tp_rate, 0, sizeof(tmp_legacy_tp_rate));
if (mi->supported[MINSTREL_CCK_GROUP])
for (j = 0; j < ARRAY_SIZE(tmp_cck_tp_rate); j++)
tmp_cck_tp_rate[j] = MINSTREL_CCK_GROUP * MCS_GROUP_RATES;
for (j = 0; j < ARRAY_SIZE(tmp_legacy_tp_rate); j++)
tmp_legacy_tp_rate[j] = MINSTREL_CCK_GROUP * MCS_GROUP_RATES;
else if (mi->supported[MINSTREL_OFDM_GROUP])
for (j = 0; j < ARRAY_SIZE(tmp_legacy_tp_rate); j++)
tmp_legacy_tp_rate[j] = MINSTREL_OFDM_GROUP * MCS_GROUP_RATES;
if (mi->supported[MINSTREL_VHT_GROUP_0])
index = MINSTREL_VHT_GROUP_0 * MCS_GROUP_RATES;
else
else if (ht_supported)
index = MINSTREL_HT_GROUP_0 * MCS_GROUP_RATES;
else if (mi->supported[MINSTREL_CCK_GROUP])
index = MINSTREL_CCK_GROUP * MCS_GROUP_RATES;
else
index = MINSTREL_OFDM_GROUP * MCS_GROUP_RATES;
tmp_max_prob_rate = index;
for (j = 0; j < ARRAY_SIZE(tmp_mcs_tp_rate); j++)
tmp_mcs_tp_rate[j] = index;
/* Find best rate sets within all MCS groups*/
for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) {
u16 *tp_rate = tmp_mcs_tp_rate;
mg = &mi->groups[group];
if (!mi->supported[group])
@ -730,6 +890,9 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
for(j = 0; j < MAX_THR_RATES; j++)
tmp_group_tp_rate[j] = MCS_GROUP_RATES * group;
if (group == MINSTREL_CCK_GROUP && ht_supported)
tp_rate = tmp_legacy_tp_rate;
for (i = 0; i < MCS_GROUP_RATES; i++) {
if (!(mi->supported[group] & BIT(i)))
continue;
@ -738,27 +901,18 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
mrs = &mg->rates[i];
mrs->retry_updated = false;
minstrel_calc_rate_stats(mp, mrs);
minstrel_ht_calc_rate_stats(mp, mrs);
cur_prob = mrs->prob_avg;
if (minstrel_ht_get_tp_avg(mi, group, i, cur_prob) == 0)
continue;
/* Find max throughput rate set */
if (group != MINSTREL_CCK_GROUP) {
minstrel_ht_sort_best_tp_rates(mi, index,
tmp_mcs_tp_rate);
} else if (group == MINSTREL_CCK_GROUP) {
minstrel_ht_sort_best_tp_rates(mi, index,
tmp_cck_tp_rate);
}
minstrel_ht_sort_best_tp_rates(mi, index, tp_rate);
/* Find max throughput rate set within a group */
minstrel_ht_sort_best_tp_rates(mi, index,
tmp_group_tp_rate);
/* Find max probability rate per group and global */
minstrel_ht_set_best_prob_rate(mi, index);
}
memcpy(mg->max_group_tp_rate, tmp_group_tp_rate,
@ -766,16 +920,36 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
}
/* Assign new rate set per sta */
minstrel_ht_assign_best_tp_rates(mi, tmp_mcs_tp_rate, tmp_cck_tp_rate);
minstrel_ht_assign_best_tp_rates(mi, tmp_mcs_tp_rate,
tmp_legacy_tp_rate);
memcpy(mi->max_tp_rate, tmp_mcs_tp_rate, sizeof(mi->max_tp_rate));
for (group = 0; group < ARRAY_SIZE(minstrel_mcs_groups); group++) {
if (!mi->supported[group])
continue;
mg = &mi->groups[group];
mg->max_group_prob_rate = MCS_GROUP_RATES * group;
for (i = 0; i < MCS_GROUP_RATES; i++) {
if (!(mi->supported[group] & BIT(i)))
continue;
index = MCS_GROUP_RATES * group + i;
/* Find max probability rate per group and global */
minstrel_ht_set_best_prob_rate(mi, &tmp_max_prob_rate,
index);
}
}
mi->max_prob_rate = tmp_max_prob_rate;
/* Try to increase robustness of max_prob_rate*/
minstrel_ht_prob_rate_reduce_streams(mi);
/* try to sample all available rates during each interval */
mi->sample_count *= 8;
if (mp->new_avg)
mi->sample_count /= 2;
/* try to sample half of all available rates during each interval */
mi->sample_count *= 4;
if (sample)
minstrel_ht_rate_sample_switch(mp, mi);
@ -795,8 +969,11 @@ minstrel_ht_update_stats(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
}
static bool
minstrel_ht_txstat_valid(struct minstrel_priv *mp, struct ieee80211_tx_rate *rate)
minstrel_ht_txstat_valid(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
struct ieee80211_tx_rate *rate)
{
int i;
if (rate->idx < 0)
return false;
@ -807,10 +984,15 @@ minstrel_ht_txstat_valid(struct minstrel_priv *mp, struct ieee80211_tx_rate *rat
rate->flags & IEEE80211_TX_RC_VHT_MCS)
return true;
return rate->idx == mp->cck_rates[0] ||
rate->idx == mp->cck_rates[1] ||
rate->idx == mp->cck_rates[2] ||
rate->idx == mp->cck_rates[3];
for (i = 0; i < ARRAY_SIZE(mp->cck_rates); i++)
if (rate->idx == mp->cck_rates[i])
return true;
for (i = 0; i < ARRAY_SIZE(mp->ofdm_rates[0]); i++)
if (rate->idx == mp->ofdm_rates[mi->band][i])
return true;
return false;
}
static void
@ -887,21 +1069,15 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
void *priv_sta, struct ieee80211_tx_status *st)
{
struct ieee80211_tx_info *info = st->info;
struct minstrel_ht_sta_priv *msp = priv_sta;
struct minstrel_ht_sta *mi = &msp->ht;
struct minstrel_ht_sta *mi = priv_sta;
struct ieee80211_tx_rate *ar = info->status.rates;
struct minstrel_rate_stats *rate, *rate2, *rate_sample = NULL;
struct minstrel_priv *mp = priv;
u32 update_interval = mp->update_interval / 2;
u32 update_interval = mp->update_interval;
bool last, update = false;
bool sample_status = false;
int i;
if (!msp->is_ht)
return mac80211_minstrel.tx_status_ext(priv, sband,
&msp->legacy, st);
/* This packet was aggregated but doesn't carry status info */
if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
!(info->flags & IEEE80211_TX_STAT_AMPDU))
@ -930,10 +1106,10 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
if (mi->sample_mode != MINSTREL_SAMPLE_IDLE)
rate_sample = minstrel_get_ratestats(mi, mi->sample_rate);
last = !minstrel_ht_txstat_valid(mp, &ar[0]);
last = !minstrel_ht_txstat_valid(mp, mi, &ar[0]);
for (i = 0; !last; i++) {
last = (i == IEEE80211_TX_MAX_RATES - 1) ||
!minstrel_ht_txstat_valid(mp, &ar[i + 1]);
!minstrel_ht_txstat_valid(mp, mi, &ar[i + 1]);
rate = minstrel_ht_get_stats(mp, mi, &ar[i]);
if (rate == rate_sample)
@ -947,9 +1123,8 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
switch (mi->sample_mode) {
case MINSTREL_SAMPLE_IDLE:
if (mp->new_avg &&
(mp->hw->max_rates > 1 ||
mi->total_packets_cur < SAMPLE_SWITCH_THR))
if (mp->hw->max_rates > 1 ||
mi->total_packets_cur < SAMPLE_SWITCH_THR)
update_interval /= 2;
break;
@ -1031,7 +1206,10 @@ minstrel_calc_retransmit(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
ctime += (t_slot * cw) >> 1;
cw = min((cw << 1) | 1, mp->cw_max);
if (index / MCS_GROUP_RATES != MINSTREL_CCK_GROUP) {
if (minstrel_ht_is_legacy_group(index / MCS_GROUP_RATES)) {
overhead = mi->overhead_legacy;
overhead_rtscts = mi->overhead_legacy_rtscts;
} else {
overhead = mi->overhead;
overhead_rtscts = mi->overhead_rtscts;
}
@ -1061,7 +1239,8 @@ static void
minstrel_ht_set_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
struct ieee80211_sta_rates *ratetbl, int offset, int index)
{
const struct mcs_group *group = &minstrel_mcs_groups[index / MCS_GROUP_RATES];
int group_idx = index / MCS_GROUP_RATES;
const struct mcs_group *group = &minstrel_mcs_groups[group_idx];
struct minstrel_rate_stats *mrs;
u8 idx;
u16 flags = group->flags;
@ -1080,13 +1259,17 @@ minstrel_ht_set_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
ratetbl->rate[offset].count_rts = mrs->retry_count_rtscts;
}
if (index / MCS_GROUP_RATES == MINSTREL_CCK_GROUP)
index %= MCS_GROUP_RATES;
if (group_idx == MINSTREL_CCK_GROUP)
idx = mp->cck_rates[index % ARRAY_SIZE(mp->cck_rates)];
else if (group_idx == MINSTREL_OFDM_GROUP)
idx = mp->ofdm_rates[mi->band][index %
ARRAY_SIZE(mp->ofdm_rates[0])];
else if (flags & IEEE80211_TX_RC_VHT_MCS)
idx = ((group->streams - 1) << 4) |
((index % MCS_GROUP_RATES) & 0xF);
(index & 0xF);
else
idx = index % MCS_GROUP_RATES + (group->streams - 1) * 8;
idx = index + (group->streams - 1) * 8;
/* enable RTS/CTS if needed:
* - if station is in dynamic SMPS (and streams > 1)
@ -1224,13 +1407,13 @@ minstrel_get_sample_rate(struct minstrel_priv *mp, struct minstrel_ht_sta *mi)
mrs = &mg->rates[sample_idx];
sample_idx += sample_group * MCS_GROUP_RATES;
/* Set tp_rate1, tp_rate2 to the highest / second highest max_tp_rate */
tp_rate1 = mi->max_tp_rate[0];
/* Set tp_rate2 to the second highest max_tp_rate */
if (minstrel_get_duration(mi->max_tp_rate[0]) >
minstrel_get_duration(mi->max_tp_rate[1])) {
tp_rate1 = mi->max_tp_rate[1];
tp_rate2 = mi->max_tp_rate[0];
} else {
tp_rate1 = mi->max_tp_rate[0];
tp_rate2 = mi->max_tp_rate[1];
}
@ -1296,16 +1479,12 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
const struct mcs_group *sample_group;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(txrc->skb);
struct ieee80211_tx_rate *rate = &info->status.rates[0];
struct minstrel_ht_sta_priv *msp = priv_sta;
struct minstrel_ht_sta *mi = &msp->ht;
struct minstrel_ht_sta *mi = priv_sta;
struct minstrel_priv *mp = priv;
int sample_idx;
if (!msp->is_ht)
return mac80211_minstrel.get_rate(priv, sta, &msp->legacy, txrc);
if (!(info->flags & IEEE80211_TX_CTL_AMPDU) &&
mi->max_prob_rate / MCS_GROUP_RATES != MINSTREL_CCK_GROUP)
!minstrel_ht_is_legacy_group(mi->max_prob_rate / MCS_GROUP_RATES))
minstrel_aggr_check(sta, txrc->skb);
info->flags |= mi->tx_flags;
@ -1346,6 +1525,9 @@ minstrel_ht_get_rate(void *priv, struct ieee80211_sta *sta, void *priv_sta,
if (sample_group == &minstrel_mcs_groups[MINSTREL_CCK_GROUP]) {
int idx = sample_idx % ARRAY_SIZE(mp->cck_rates);
rate->idx = mp->cck_rates[idx];
} else if (sample_group == &minstrel_mcs_groups[MINSTREL_OFDM_GROUP]) {
int idx = sample_idx % ARRAY_SIZE(mp->ofdm_rates[0]);
rate->idx = mp->ofdm_rates[mi->band][idx];
} else if (sample_group->flags & IEEE80211_TX_RC_VHT_MCS) {
ieee80211_rate_set_vht(rate, sample_idx % MCS_GROUP_RATES,
sample_group->streams);
@ -1366,44 +1548,59 @@ minstrel_ht_update_cck(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
if (sband->band != NL80211_BAND_2GHZ)
return;
if (!ieee80211_hw_check(mp->hw, SUPPORTS_HT_CCK_RATES))
if (sta->ht_cap.ht_supported &&
!ieee80211_hw_check(mp->hw, SUPPORTS_HT_CCK_RATES))
return;
mi->cck_supported = 0;
mi->cck_supported_short = 0;
for (i = 0; i < 4; i++) {
if (!rate_supported(sta, sband->band, mp->cck_rates[i]))
if (mp->cck_rates[i] == 0xff ||
!rate_supported(sta, sband->band, mp->cck_rates[i]))
continue;
mi->cck_supported |= BIT(i);
mi->supported[MINSTREL_CCK_GROUP] |= BIT(i);
if (sband->bitrates[i].flags & IEEE80211_RATE_SHORT_PREAMBLE)
mi->cck_supported_short |= BIT(i);
mi->supported[MINSTREL_CCK_GROUP] |= BIT(i + 4);
}
}
mi->supported[MINSTREL_CCK_GROUP] = mi->cck_supported;
static void
minstrel_ht_update_ofdm(struct minstrel_priv *mp, struct minstrel_ht_sta *mi,
struct ieee80211_supported_band *sband,
struct ieee80211_sta *sta)
{
const u8 *rates;
int i;
if (sta->ht_cap.ht_supported)
return;
rates = mp->ofdm_rates[sband->band];
for (i = 0; i < ARRAY_SIZE(mp->ofdm_rates[0]); i++) {
if (rates[i] == 0xff ||
!rate_supported(sta, sband->band, rates[i]))
continue;
mi->supported[MINSTREL_OFDM_GROUP] |= BIT(i);
}
}
static void
minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
struct cfg80211_chan_def *chandef,
struct ieee80211_sta *sta, void *priv_sta)
struct ieee80211_sta *sta, void *priv_sta)
{
struct minstrel_priv *mp = priv;
struct minstrel_ht_sta_priv *msp = priv_sta;
struct minstrel_ht_sta *mi = &msp->ht;
struct minstrel_ht_sta *mi = priv_sta;
struct ieee80211_mcs_info *mcs = &sta->ht_cap.mcs;
u16 ht_cap = sta->ht_cap.cap;
struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
const struct ieee80211_rate *ctl_rate;
bool ldpc, erp;
int use_vht;
int n_supported = 0;
int ack_dur;
int stbc;
int i;
bool ldpc;
/* fall back to the old minstrel for legacy stations */
if (!sta->ht_cap.ht_supported)
goto use_legacy;
BUILD_BUG_ON(ARRAY_SIZE(minstrel_mcs_groups) != MINSTREL_GROUPS_NB);
@ -1412,10 +1609,10 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
else
use_vht = 0;
msp->is_ht = true;
memset(mi, 0, sizeof(*mi));
mi->sta = sta;
mi->band = sband->band;
mi->last_stats_update = jiffies;
ack_dur = ieee80211_frame_duration(sband->band, 10, 60, 1, 1, 0);
@ -1423,6 +1620,14 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
mi->overhead += ack_dur;
mi->overhead_rtscts = mi->overhead + 2 * ack_dur;
ctl_rate = &sband->bitrates[rate_lowest_index(sband, sta)];
erp = ctl_rate->flags & IEEE80211_RATE_ERP_G;
ack_dur = ieee80211_frame_duration(sband->band, 10,
ctl_rate->bitrate, erp, 1,
ieee80211_chandef_get_shift(chandef));
mi->overhead_legacy = ack_dur;
mi->overhead_legacy_rtscts = mi->overhead_legacy + 2 * ack_dur;
mi->avg_ampdu_len = MINSTREL_FRAC(1, 1);
/* When using MRR, sample more on the first attempt, without delay */
@ -1456,10 +1661,8 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
int bw, nss;
mi->supported[i] = 0;
if (i == MINSTREL_CCK_GROUP) {
minstrel_ht_update_cck(mp, mi, sband, sta);
if (minstrel_ht_is_legacy_group(i))
continue;
}
if (gflags & IEEE80211_TX_RC_SHORT_GI) {
if (gflags & IEEE80211_TX_RC_40_MHZ_WIDTH) {
@ -1520,24 +1723,12 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
n_supported++;
}
if (!n_supported)
goto use_legacy;
mi->supported[MINSTREL_CCK_GROUP] |= mi->cck_supported_short << 4;
minstrel_ht_update_cck(mp, mi, sband, sta);
minstrel_ht_update_ofdm(mp, mi, sband, sta);
/* create an initial rate table with the lowest supported rates */
minstrel_ht_update_stats(mp, mi, true);
minstrel_ht_update_rates(mp, mi);
return;
use_legacy:
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, chandef, sta,
&msp->legacy);
}
static void
@ -1561,7 +1752,7 @@ 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_ht_sta *mi;
struct minstrel_priv *mp = priv;
struct ieee80211_hw *hw = mp->hw;
int max_rates = 0;
@ -1573,72 +1764,80 @@ minstrel_ht_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
max_rates = sband->n_bitrates;
}
msp = kzalloc(sizeof(*msp), gfp);
if (!msp)
return NULL;
msp->ratelist = kcalloc(max_rates, sizeof(struct minstrel_rate), gfp);
if (!msp->ratelist)
goto error;
msp->sample_table = kmalloc_array(max_rates, SAMPLE_COLUMNS, gfp);
if (!msp->sample_table)
goto error1;
return msp;
error1:
kfree(msp->ratelist);
error:
kfree(msp);
return NULL;
return kzalloc(sizeof(*mi), gfp);
}
static void
minstrel_ht_free_sta(void *priv, struct ieee80211_sta *sta, void *priv_sta)
{
struct minstrel_ht_sta_priv *msp = priv_sta;
kfree(priv_sta);
}
kfree(msp->sample_table);
kfree(msp->ratelist);
kfree(msp);
static void
minstrel_ht_fill_rate_array(u8 *dest, struct ieee80211_supported_band *sband,
const s16 *bitrates, int n_rates, u32 rate_flags)
{
int i, j;
for (i = 0; i < sband->n_bitrates; i++) {
struct ieee80211_rate *rate = &sband->bitrates[i];
if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
continue;
for (j = 0; j < n_rates; j++) {
if (rate->bitrate != bitrates[j])
continue;
dest[j] = i;
break;
}
}
}
static void
minstrel_ht_init_cck_rates(struct minstrel_priv *mp)
{
static const int bitrates[4] = { 10, 20, 55, 110 };
static const s16 bitrates[4] = { 10, 20, 55, 110 };
struct ieee80211_supported_band *sband;
u32 rate_flags = ieee80211_chandef_rate_flags(&mp->hw->conf.chandef);
int i, j;
memset(mp->cck_rates, 0xff, sizeof(mp->cck_rates));
sband = mp->hw->wiphy->bands[NL80211_BAND_2GHZ];
if (!sband)
return;
for (i = 0; i < sband->n_bitrates; i++) {
struct ieee80211_rate *rate = &sband->bitrates[i];
BUILD_BUG_ON(ARRAY_SIZE(mp->cck_rates) != ARRAY_SIZE(bitrates));
minstrel_ht_fill_rate_array(mp->cck_rates, sband,
minstrel_cck_bitrates,
ARRAY_SIZE(minstrel_cck_bitrates),
rate_flags);
}
if (rate->flags & IEEE80211_RATE_ERP_G)
continue;
static void
minstrel_ht_init_ofdm_rates(struct minstrel_priv *mp, enum nl80211_band band)
{
static const s16 bitrates[8] = { 60, 90, 120, 180, 240, 360, 480, 540 };
struct ieee80211_supported_band *sband;
u32 rate_flags = ieee80211_chandef_rate_flags(&mp->hw->conf.chandef);
if ((rate_flags & sband->bitrates[i].flags) != rate_flags)
continue;
memset(mp->ofdm_rates[band], 0xff, sizeof(mp->ofdm_rates[band]));
sband = mp->hw->wiphy->bands[band];
if (!sband)
return;
for (j = 0; j < ARRAY_SIZE(bitrates); j++) {
if (rate->bitrate != bitrates[j])
continue;
mp->cck_rates[j] = i;
break;
}
}
BUILD_BUG_ON(ARRAY_SIZE(mp->ofdm_rates[band]) != ARRAY_SIZE(bitrates));
minstrel_ht_fill_rate_array(mp->ofdm_rates[band], sband,
minstrel_ofdm_bitrates,
ARRAY_SIZE(minstrel_ofdm_bitrates),
rate_flags);
}
static void *
minstrel_ht_alloc(struct ieee80211_hw *hw)
{
struct minstrel_priv *mp;
int i;
mp = kzalloc(sizeof(struct minstrel_priv), GFP_ATOMIC);
if (!mp)
@ -1652,12 +1851,6 @@ minstrel_ht_alloc(struct ieee80211_hw *hw)
mp->cw_min = 15;
mp->cw_max = 1023;
/* number of packets (in %) to use for sampling other rates
* sample less often for non-mrr packets, because the overhead
* is much higher than with mrr */
mp->lookaround_rate = 5;
mp->lookaround_rate_mrr = 10;
/* maximum time that the hw is allowed to stay in one MRR segment */
mp->segment_size = 6000;
@ -1672,9 +1865,10 @@ minstrel_ht_alloc(struct ieee80211_hw *hw)
mp->hw = hw;
mp->update_interval = HZ / 10;
mp->new_avg = true;
minstrel_ht_init_cck_rates(mp);
for (i = 0; i < ARRAY_SIZE(mp->hw->wiphy->bands); i++)
minstrel_ht_init_ofdm_rates(mp, i);
return mp;
}
@ -1690,8 +1884,6 @@ static void minstrel_ht_add_debugfs(struct ieee80211_hw *hw, void *priv,
&mp->fixed_rate_idx);
debugfs_create_u32("sample_switch", S_IRUGO | S_IWUSR, debugfsdir,
&mp->sample_switch);
debugfs_create_bool("new_avg", S_IRUGO | S_IWUSR, debugfsdir,
&mp->new_avg);
}
#endif
@ -1703,13 +1895,9 @@ minstrel_ht_free(void *priv)
static u32 minstrel_ht_get_expected_throughput(void *priv_sta)
{
struct minstrel_ht_sta_priv *msp = priv_sta;
struct minstrel_ht_sta *mi = &msp->ht;
struct minstrel_ht_sta *mi = priv_sta;
int i, j, prob, tp_avg;
if (!msp->is_ht)
return mac80211_minstrel.get_expected_throughput(priv_sta);
i = mi->max_tp_rate[0] / MCS_GROUP_RATES;
j = mi->max_tp_rate[0] % MCS_GROUP_RATES;
prob = mi->groups[i].rates[j].prob_avg;

96
net/mac80211/rc80211_minstrel_ht.h
View File

@ -6,6 +6,33 @@
#ifndef __RC_MINSTREL_HT_H
#define __RC_MINSTREL_HT_H
/* number of highest throughput rates to consider*/
#define MAX_THR_RATES 4
#define SAMPLE_COLUMNS 10 /* number of columns in sample table */
/* scaled fraction values */
#define MINSTREL_SCALE 12
#define MINSTREL_FRAC(val, div) (((val) << MINSTREL_SCALE) / div)
#define MINSTREL_TRUNC(val) ((val) >> MINSTREL_SCALE)
#define EWMA_LEVEL 96 /* ewma weighting factor [/EWMA_DIV] */
#define EWMA_DIV 128
/*
* Coefficients for moving average with noise filter (period=16),
* scaled by 10 bits
*
* a1 = exp(-pi * sqrt(2) / period)
* coeff2 = 2 * a1 * cos(sqrt(2) * 2 * pi / period)
* coeff3 = -sqr(a1)
* coeff1 = 1 - coeff2 - coeff3
*/
#define MINSTREL_AVG_COEFF1 (MINSTREL_FRAC(1, 1) - \
MINSTREL_AVG_COEFF2 - \
MINSTREL_AVG_COEFF3)
#define MINSTREL_AVG_COEFF2 0x00001499
#define MINSTREL_AVG_COEFF3 -0x0000092e
/*
* The number of streams can be changed to 2 to reduce code
* size and memory footprint.
@ -18,17 +45,43 @@
MINSTREL_HT_STREAM_GROUPS)
#define MINSTREL_VHT_GROUPS_NB (MINSTREL_MAX_STREAMS * \
MINSTREL_VHT_STREAM_GROUPS)
#define MINSTREL_CCK_GROUPS_NB 1
#define MINSTREL_LEGACY_GROUPS_NB 2
#define MINSTREL_GROUPS_NB (MINSTREL_HT_GROUPS_NB + \
MINSTREL_VHT_GROUPS_NB + \
MINSTREL_CCK_GROUPS_NB)
MINSTREL_LEGACY_GROUPS_NB)
#define MINSTREL_HT_GROUP_0 0
#define MINSTREL_CCK_GROUP (MINSTREL_HT_GROUP_0 + MINSTREL_HT_GROUPS_NB)
#define MINSTREL_VHT_GROUP_0 (MINSTREL_CCK_GROUP + 1)
#define MINSTREL_OFDM_GROUP (MINSTREL_CCK_GROUP + 1)
#define MINSTREL_VHT_GROUP_0 (MINSTREL_OFDM_GROUP + 1)
#define MCS_GROUP_RATES 10
struct minstrel_priv {
struct ieee80211_hw *hw;
bool has_mrr;
u32 sample_switch;
unsigned int cw_min;
unsigned int cw_max;
unsigned int max_retry;
unsigned int segment_size;
unsigned int update_interval;
u8 cck_rates[4];
u8 ofdm_rates[NUM_NL80211_BANDS][8];
#ifdef CONFIG_MAC80211_DEBUGFS
/*
* enable fixed rate processing per RC
* - write static index to debugfs:ieee80211/phyX/rc/fixed_rate_idx
* - write -1 to enable RC processing again
* - setting will be applied on next update
*/
u32 fixed_rate_idx;
#endif
};
struct mcs_group {
u16 flags;
u8 streams;
@ -37,8 +90,30 @@ struct mcs_group {
u16 duration[MCS_GROUP_RATES];
};
extern const s16 minstrel_cck_bitrates[4];
extern const s16 minstrel_ofdm_bitrates[8];
extern const struct mcs_group minstrel_mcs_groups[];
struct minstrel_rate_stats {
/* current / last sampling period attempts/success counters */
u16 attempts, last_attempts;
u16 success, last_success;
/* total attempts/success counters */
u32 att_hist, succ_hist;
/* prob_avg - moving average of prob */
u16 prob_avg;
u16 prob_avg_1;
/* maximum retry counts */
u8 retry_count;
u8 retry_count_rtscts;
u8 sample_skipped;
bool retry_updated;
};
struct minstrel_mcs_group_data {
u8 index;
u8 column;
@ -77,6 +152,8 @@ struct minstrel_ht_sta {
/* overhead time in usec for each frame */
unsigned int overhead;
unsigned int overhead_rtscts;
unsigned int overhead_legacy;
unsigned int overhead_legacy_rtscts;
unsigned int total_packets_last;
unsigned int total_packets_cur;
@ -97,8 +174,7 @@ struct minstrel_ht_sta {
/* current MCS group to be sampled */
u8 sample_group;
u8 cck_supported;
u8 cck_supported_short;
u8 band;
/* Bitfield of supported MCS rates of all groups */
u16 supported[MINSTREL_GROUPS_NB];
@ -107,16 +183,6 @@ struct minstrel_ht_sta {
struct minstrel_mcs_group_data groups[MINSTREL_GROUPS_NB];
};
struct minstrel_ht_sta_priv {
union {
struct minstrel_ht_sta ht;
struct minstrel_sta_info legacy;
};
void *ratelist;
void *sample_table;
bool is_ht;
};
void minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir);
int minstrel_ht_get_tp_avg(struct minstrel_ht_sta *mi, int group, int rate,
int prob_avg);

57
net/mac80211/rc80211_minstrel_ht_debugfs.c
View File

@ -9,9 +9,13 @@
#include <linux/ieee80211.h>
#include <linux/export.h>
#include <net/mac80211.h>
#include "rc80211_minstrel.h"
#include "rc80211_minstrel_ht.h"
struct minstrel_debugfs_info {
size_t len;
char buf[];
};
static ssize_t
minstrel_stats_read(struct file *file, char __user *buf, size_t len, loff_t *ppos)
{
@ -52,7 +56,6 @@ minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
for (j = 0; j < MCS_GROUP_RATES; j++) {
struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j];
static const int bitrates[4] = { 10, 20, 55, 110 };
int idx = i * MCS_GROUP_RATES + j;
unsigned int duration;
@ -67,6 +70,9 @@ minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
p += sprintf(p, "VHT%c0 ", htmode);
p += sprintf(p, "%cGI ", gimode);
p += sprintf(p, "%d ", mg->streams);
} else if (i == MINSTREL_OFDM_GROUP) {
p += sprintf(p, "OFDM ");
p += sprintf(p, "1 ");
} else {
p += sprintf(p, "CCK ");
p += sprintf(p, "%cP ", j < 4 ? 'L' : 'S');
@ -84,7 +90,12 @@ minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
p += sprintf(p, " MCS%-1u/%1u", j, mg->streams);
} else {
int r = bitrates[j % 4];
int r;
if (i == MINSTREL_OFDM_GROUP)
r = minstrel_ofdm_bitrates[j % 8];
else
r = minstrel_cck_bitrates[j % 4];
p += sprintf(p, " %2u.%1uM", r / 10, r % 10);
}
@ -120,20 +131,11 @@ minstrel_ht_stats_dump(struct minstrel_ht_sta *mi, int i, char *p)
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_ht_sta *mi = inode->i_private;
struct minstrel_debugfs_info *ms;
unsigned int i;
int ret;
char *p;
if (!msp->is_ht) {
inode->i_private = &msp->legacy;
ret = minstrel_stats_open(inode, file);
inode->i_private = msp;
return ret;
}
ms = kmalloc(32768, GFP_KERNEL);
if (!ms)
return -ENOMEM;
@ -199,7 +201,6 @@ minstrel_ht_stats_csv_dump(struct minstrel_ht_sta *mi, int i, char *p)
for (j = 0; j < MCS_GROUP_RATES; j++) {
struct minstrel_rate_stats *mrs = &mi->groups[i].rates[j];
static const int bitrates[4] = { 10, 20, 55, 110 };
int idx = i * MCS_GROUP_RATES + j;
unsigned int duration;
@ -214,6 +215,8 @@ minstrel_ht_stats_csv_dump(struct minstrel_ht_sta *mi, int i, char *p)
p += sprintf(p, "VHT%c0,", htmode);
p += sprintf(p, "%cGI,", gimode);
p += sprintf(p, "%d,", mg->streams);
} else if (i == MINSTREL_OFDM_GROUP) {
p += sprintf(p, "OFDM,,1,");
} else {
p += sprintf(p, "CCK,");
p += sprintf(p, "%cP,", j < 4 ? 'L' : 'S');
@ -231,7 +234,13 @@ minstrel_ht_stats_csv_dump(struct minstrel_ht_sta *mi, int i, char *p)
} else if (gflags & IEEE80211_TX_RC_VHT_MCS) {
p += sprintf(p, ",MCS%-1u/%1u,", j, mg->streams);
} else {
int r = bitrates[j % 4];
int r;
if (i == MINSTREL_OFDM_GROUP)
r = minstrel_ofdm_bitrates[j % 8];
else
r = minstrel_cck_bitrates[j % 4];
p += sprintf(p, ",%2u.%1uM,", r / 10, r % 10);
}
@ -270,22 +279,12 @@ minstrel_ht_stats_csv_dump(struct minstrel_ht_sta *mi, int i, char *p)
static int
minstrel_ht_stats_csv_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_ht_sta *mi = inode->i_private;
struct minstrel_debugfs_info *ms;
unsigned int i;
int ret;
char *p;
if (!msp->is_ht) {
inode->i_private = &msp->legacy;
ret = minstrel_stats_csv_open(inode, file);
inode->i_private = msp;
return ret;
}
ms = kmalloc(32768, GFP_KERNEL);
if (!ms)
return -ENOMEM;
@ -316,10 +315,8 @@ static const struct file_operations minstrel_ht_stat_csv_fops = {
void
minstrel_ht_add_sta_debugfs(void *priv, void *priv_sta, struct dentry *dir)
{
struct minstrel_ht_sta_priv *msp = priv_sta;
debugfs_create_file("rc_stats", 0444, dir, msp,
debugfs_create_file("rc_stats", 0444, dir, priv_sta,
&minstrel_ht_stat_fops);
debugfs_create_file("rc_stats_csv", 0444, dir, msp,
debugfs_create_file("rc_stats_csv", 0444, dir, priv_sta,
&minstrel_ht_stat_csv_fops);
}

243
net/mac80211/rx.c
View File

@ -4095,7 +4095,9 @@ void ieee80211_check_fast_rx(struct sta_info *sta)
.vif_type = sdata->vif.type,
.control_port_protocol = sdata->control_port_protocol,
}, *old, *new = NULL;
bool set_offload = false;
bool assign = false;
bool offload;
/* use sparse to check that we don't return without updating */
__acquire(check_fast_rx);
@ -4208,6 +4210,17 @@ void ieee80211_check_fast_rx(struct sta_info *sta)
if (assign)
new = kmemdup(&fastrx, sizeof(fastrx), GFP_KERNEL);
offload = assign &&
(sdata->vif.offload_flags & IEEE80211_OFFLOAD_DECAP_ENABLED);
if (offload)
set_offload = !test_and_set_sta_flag(sta, WLAN_STA_DECAP_OFFLOAD);
else
set_offload = test_and_clear_sta_flag(sta, WLAN_STA_DECAP_OFFLOAD);
if (set_offload)
drv_sta_set_decap_offload(local, sdata, &sta->sta, assign);
spin_lock_bh(&sta->lock);
old = rcu_dereference_protected(sta->fast_rx, true);
rcu_assign_pointer(sta->fast_rx, new);
@ -4254,6 +4267,104 @@ void ieee80211_check_fast_rx_iface(struct ieee80211_sub_if_data *sdata)
mutex_unlock(&local->sta_mtx);
}
static void ieee80211_rx_8023(struct ieee80211_rx_data *rx,
struct ieee80211_fast_rx *fast_rx,
int orig_len)
{
struct ieee80211_sta_rx_stats *stats;
struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);
struct sta_info *sta = rx->sta;
struct sk_buff *skb = rx->skb;
void *sa = skb->data + ETH_ALEN;
void *da = skb->data;
stats = &sta->rx_stats;
if (fast_rx->uses_rss)
stats = this_cpu_ptr(sta->pcpu_rx_stats);
/* statistics part of ieee80211_rx_h_sta_process() */
if (!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {
stats->last_signal = status->signal;
if (!fast_rx->uses_rss)
ewma_signal_add(&sta->rx_stats_avg.signal,
-status->signal);
}
if (status->chains) {
int i;
stats->chains = status->chains;
for (i = 0; i < ARRAY_SIZE(status->chain_signal); i++) {
int signal = status->chain_signal[i];
if (!(status->chains & BIT(i)))
continue;
stats->chain_signal_last[i] = signal;
if (!fast_rx->uses_rss)
ewma_signal_add(&sta->rx_stats_avg.chain_signal[i],
-signal);
}
}
/* end of statistics */
stats->last_rx = jiffies;
stats->last_rate = sta_stats_encode_rate(status);
stats->fragments++;
stats->packets++;
skb->dev = fast_rx->dev;
dev_sw_netstats_rx_add(fast_rx->dev, skb->len);
/* The seqno index has the same property as needed
* for the rx_msdu field, i.e. it is IEEE80211_NUM_TIDS
* for non-QoS-data frames. Here we know it's a data
* frame, so count MSDUs.
*/
u64_stats_update_begin(&stats->syncp);
stats->msdu[rx->seqno_idx]++;
stats->bytes += orig_len;
u64_stats_update_end(&stats->syncp);
if (fast_rx->internal_forward) {
struct sk_buff *xmit_skb = NULL;
if (is_multicast_ether_addr(da)) {
xmit_skb = skb_copy(skb, GFP_ATOMIC);
} else if (!ether_addr_equal(da, sa) &&
sta_info_get(rx->sdata, da)) {
xmit_skb = skb;
skb = NULL;
}
if (xmit_skb) {
/*
* Send to wireless media and increase priority by 256
* to keep the received priority instead of
* reclassifying the frame (see cfg80211_classify8021d).
*/
xmit_skb->priority += 256;
xmit_skb->protocol = htons(ETH_P_802_3);
skb_reset_network_header(xmit_skb);
skb_reset_mac_header(xmit_skb);
dev_queue_xmit(xmit_skb);
}
if (!skb)
return;
}
/* deliver to local stack */
skb->protocol = eth_type_trans(skb, fast_rx->dev);
memset(skb->cb, 0, sizeof(skb->cb));
if (rx->list)
list_add_tail(&skb->list, rx->list);
else
netif_receive_skb(skb);
}
static bool ieee80211_invoke_fast_rx(struct ieee80211_rx_data *rx,
struct ieee80211_fast_rx *fast_rx)
{
@ -4274,9 +4385,6 @@ static bool ieee80211_invoke_fast_rx(struct ieee80211_rx_data *rx,
} addrs __aligned(2);
struct ieee80211_sta_rx_stats *stats = &sta->rx_stats;
if (fast_rx->uses_rss)
stats = this_cpu_ptr(sta->pcpu_rx_stats);
/* for parallel-rx, we need to have DUP_VALIDATED, otherwise we write
* to a common data structure; drivers can implement that per queue
* but we don't have that information in mac80211
@ -4350,32 +4458,6 @@ static bool ieee80211_invoke_fast_rx(struct ieee80211_rx_data *rx,
pskb_trim(skb, skb->len - fast_rx->icv_len))
goto drop;
/* statistics part of ieee80211_rx_h_sta_process() */
if (!(status->flag & RX_FLAG_NO_SIGNAL_VAL)) {
stats->last_signal = status->signal;
if (!fast_rx->uses_rss)
ewma_signal_add(&sta->rx_stats_avg.signal,
-status->signal);
}
if (status->chains) {
int i;
stats->chains = status->chains;
for (i = 0; i < ARRAY_SIZE(status->chain_signal); i++) {
int signal = status->chain_signal[i];
if (!(status->chains & BIT(i)))
continue;
stats->chain_signal_last[i] = signal;
if (!fast_rx->uses_rss)
ewma_signal_add(&sta->rx_stats_avg.chain_signal[i],
-signal);
}
}
/* end of statistics */
if (rx->key && !ieee80211_has_protected(hdr->frame_control))
goto drop;
@ -4387,12 +4469,6 @@ static bool ieee80211_invoke_fast_rx(struct ieee80211_rx_data *rx,
return true;
}
stats->last_rx = jiffies;
stats->last_rate = sta_stats_encode_rate(status);
stats->fragments++;
stats->packets++;
/* do the header conversion - first grab the addresses */
ether_addr_copy(addrs.da, skb->data + fast_rx->da_offs);
ether_addr_copy(addrs.sa, skb->data + fast_rx->sa_offs);
@ -4401,58 +4477,14 @@ static bool ieee80211_invoke_fast_rx(struct ieee80211_rx_data *rx,
/* push the addresses in front */
memcpy(skb_push(skb, sizeof(addrs)), &addrs, sizeof(addrs));
skb->dev = fast_rx->dev;
dev_sw_netstats_rx_add(fast_rx->dev, skb->len);
/* The seqno index has the same property as needed
* for the rx_msdu field, i.e. it is IEEE80211_NUM_TIDS
* for non-QoS-data frames. Here we know it's a data
* frame, so count MSDUs.
*/
u64_stats_update_begin(&stats->syncp);
stats->msdu[rx->seqno_idx]++;
stats->bytes += orig_len;
u64_stats_update_end(&stats->syncp);
if (fast_rx->internal_forward) {
struct sk_buff *xmit_skb = NULL;
if (is_multicast_ether_addr(addrs.da)) {
xmit_skb = skb_copy(skb, GFP_ATOMIC);
} else if (!ether_addr_equal(addrs.da, addrs.sa) &&
sta_info_get(rx->sdata, addrs.da)) {
xmit_skb = skb;
skb = NULL;
}
if (xmit_skb) {
/*
* Send to wireless media and increase priority by 256
* to keep the received priority instead of
* reclassifying the frame (see cfg80211_classify8021d).
*/
xmit_skb->priority += 256;
xmit_skb->protocol = htons(ETH_P_802_3);
skb_reset_network_header(xmit_skb);
skb_reset_mac_header(xmit_skb);
dev_queue_xmit(xmit_skb);
}
if (!skb)
return true;
}
/* deliver to local stack */
skb->protocol = eth_type_trans(skb, fast_rx->dev);
memset(skb->cb, 0, sizeof(skb->cb));
if (rx->list)
list_add_tail(&skb->list, rx->list);
else
netif_receive_skb(skb);
ieee80211_rx_8023(rx, fast_rx, orig_len);
return true;
drop:
dev_kfree_skb(skb);
if (fast_rx->uses_rss)
stats = this_cpu_ptr(sta->pcpu_rx_stats);
stats->dropped++;
return true;
}
@ -4506,6 +4538,43 @@ static bool ieee80211_prepare_and_rx_handle(struct ieee80211_rx_data *rx,
return true;
}
static void __ieee80211_rx_handle_8023(struct ieee80211_hw *hw,
struct ieee80211_sta *pubsta,
struct sk_buff *skb,
struct list_head *list)
{
struct ieee80211_local *local = hw_to_local(hw);
struct ieee80211_fast_rx *fast_rx;
struct ieee80211_rx_data rx;
memset(&rx, 0, sizeof(rx));
rx.skb = skb;
rx.local = local;
rx.list = list;
I802_DEBUG_INC(local->dot11ReceivedFragmentCount);
/* drop frame if too short for header */
if (skb->len < sizeof(struct ethhdr))
goto drop;
if (!pubsta)
goto drop;
rx.sta = container_of(pubsta, struct sta_info, sta);
rx.sdata = rx.sta->sdata;
fast_rx = rcu_dereference(rx.sta->fast_rx);
if (!fast_rx)
goto drop;
ieee80211_rx_8023(&rx, fast_rx, skb->len);
return;
drop:
dev_kfree_skb(skb);
}
/*
* This is the actual Rx frames handler. as it belongs to Rx path it must
* be called with rcu_read_lock protection.
@ -4737,13 +4806,17 @@ void ieee80211_rx_list(struct ieee80211_hw *hw, struct ieee80211_sta *pubsta,
* if it was previously present.
* Also, frames with less than 16 bytes are dropped.
*/
skb = ieee80211_rx_monitor(local, skb, rate);
if (!(status->flag & RX_FLAG_8023))
skb = ieee80211_rx_monitor(local, skb, rate);
if (skb) {
ieee80211_tpt_led_trig_rx(local,
((struct ieee80211_hdr *)skb->data)->frame_control,
skb->len);
__ieee80211_rx_handle_packet(hw, pubsta, skb, list);
if (status->flag & RX_FLAG_8023)
__ieee80211_rx_handle_8023(hw, pubsta, skb, list);
else
__ieee80211_rx_handle_packet(hw, pubsta, skb, list);
}
kcov_remote_stop();

2
net/mac80211/sta_info.h
View File

@ -71,6 +71,7 @@
* until pending frames are delivered
* @WLAN_STA_USES_ENCRYPTION: This station was configured for encryption,
* so drop all packets without a key later.
* @WLAN_STA_DECAP_OFFLOAD: This station uses rx decap offload
*
* @NUM_WLAN_STA_FLAGS: number of defined flags
*/
@ -102,6 +103,7 @@ enum ieee80211_sta_info_flags {
WLAN_STA_MPSP_RECIPIENT,
WLAN_STA_PS_DELIVER,
WLAN_STA_USES_ENCRYPTION,
WLAN_STA_DECAP_OFFLOAD,
NUM_WLAN_STA_FLAGS,
};

6
net/mac80211/tdls.c
View File

@ -1927,7 +1927,7 @@ ieee80211_process_tdls_channel_switch(struct ieee80211_sub_if_data *sdata,
struct ieee80211_tdls_data *tf = (void *)skb->data;
struct wiphy *wiphy = sdata->local->hw.wiphy;
ASSERT_RTNL();
lockdep_assert_wiphy(wiphy);
/* make sure the driver supports it */
if (!(wiphy->features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH))
@ -1979,7 +1979,7 @@ void ieee80211_tdls_chsw_work(struct work_struct *wk)
struct sk_buff *skb;
struct ieee80211_tdls_data *tf;
rtnl_lock();
wiphy_lock(local->hw.wiphy);
while ((skb = skb_dequeue(&local->skb_queue_tdls_chsw))) {
tf = (struct ieee80211_tdls_data *)skb->data;
list_for_each_entry(sdata, &local->interfaces, list) {
@ -1994,7 +1994,7 @@ void ieee80211_tdls_chsw_work(struct work_struct *wk)
kfree_skb(skb);
}
rtnl_unlock();
wiphy_unlock(local->hw.wiphy);
}
void ieee80211_tdls_handle_disconnect(struct ieee80211_sub_if_data *sdata,

18
net/mac80211/trace.h
View File

@ -2761,7 +2761,7 @@ DEFINE_EVENT(local_sdata_addr_evt, drv_update_vif_offload,
TP_ARGS(local, sdata)
);
TRACE_EVENT(drv_sta_set_4addr,
DECLARE_EVENT_CLASS(sta_flag_evt,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta, bool enabled),
@ -2788,6 +2788,22 @@ TRACE_EVENT(drv_sta_set_4addr,
)
);
DEFINE_EVENT(sta_flag_evt, drv_sta_set_4addr,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta, bool enabled),
TP_ARGS(local, sdata, sta, enabled)
);
DEFINE_EVENT(sta_flag_evt, drv_sta_set_decap_offload,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta, bool enabled),
TP_ARGS(local, sdata, sta, enabled)
);
#endif /* !__MAC80211_DRIVER_TRACE || TRACE_HEADER_MULTI_READ */
#undef TRACE_INCLUDE_PATH

33
net/mac80211/tx.c
View File

@ -1309,7 +1309,7 @@ static struct sk_buff *codel_dequeue_func(struct codel_vars *cvars,
fq = &local->fq;
if (cvars == &txqi->def_cvars)
flow = &txqi->def_flow;
flow = &txqi->tin.default_flow;
else
flow = &fq->flows[cvars - local->cvars];
@ -1352,7 +1352,7 @@ static struct sk_buff *fq_tin_dequeue_func(struct fq *fq,
cparams = &local->cparams;
}
if (flow == &txqi->def_flow)
if (flow == &tin->default_flow)
cvars = &txqi->def_cvars;
else
cvars = &local->cvars[flow - fq->flows];
@ -1379,17 +1379,6 @@ static void fq_skb_free_func(struct fq *fq,
ieee80211_free_txskb(&local->hw, skb);
}
static struct fq_flow *fq_flow_get_default_func(struct fq *fq,
struct fq_tin *tin,
int idx,
struct sk_buff *skb)
{
struct txq_info *txqi;
txqi = container_of(tin, struct txq_info, tin);
return &txqi->def_flow;
}
static void ieee80211_txq_enqueue(struct ieee80211_local *local,
struct txq_info *txqi,
struct sk_buff *skb)
@ -1402,8 +1391,7 @@ static void ieee80211_txq_enqueue(struct ieee80211_local *local,
spin_lock_bh(&fq->lock);
fq_tin_enqueue(fq, tin, flow_idx, skb,
fq_skb_free_func,
fq_flow_get_default_func);
fq_skb_free_func);
spin_unlock_bh(&fq->lock);
}
@ -1446,7 +1434,6 @@ void ieee80211_txq_init(struct ieee80211_sub_if_data *sdata,
struct txq_info *txqi, int tid)
{
fq_tin_init(&txqi->tin);
fq_flow_init(&txqi->def_flow);
codel_vars_init(&txqi->def_cvars);
codel_stats_init(&txqi->cstats);
__skb_queue_head_init(&txqi->frags);
@ -2133,6 +2120,10 @@ bool ieee80211_parse_tx_radiotap(struct sk_buff *skb,
if (mcs_known & IEEE80211_RADIOTAP_MCS_HAVE_BW &&
mcs_bw == IEEE80211_RADIOTAP_MCS_BW_40)
rate_flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
if (mcs_known & IEEE80211_RADIOTAP_MCS_HAVE_FEC &&
mcs_flags & IEEE80211_RADIOTAP_MCS_FEC_LDPC)
info->flags |= IEEE80211_TX_CTL_LDPC;
break;
case IEEE80211_RADIOTAP_VHT:
@ -3283,8 +3274,7 @@ static bool ieee80211_amsdu_aggregate(struct ieee80211_sub_if_data *sdata,
*/
tin = &txqi->tin;
flow = fq_flow_classify(fq, tin, flow_idx, skb,
fq_flow_get_default_func);
flow = fq_flow_classify(fq, tin, flow_idx, skb);
head = skb_peek_tail(&flow->queue);
if (!head || skb_is_gso(head))
goto out;
@ -3351,8 +3341,6 @@ static bool ieee80211_amsdu_aggregate(struct ieee80211_sub_if_data *sdata,
if (head->len != orig_len) {
flow->backlog += head->len - orig_len;
tin->backlog_bytes += head->len - orig_len;
fq_recalc_backlog(fq, tin, flow);
}
out:
spin_unlock_bh(&fq->lock);
@ -3823,6 +3811,8 @@ void __ieee80211_schedule_txq(struct ieee80211_hw *hw,
}
EXPORT_SYMBOL(__ieee80211_schedule_txq);
DEFINE_STATIC_KEY_FALSE(aql_disable);
bool ieee80211_txq_airtime_check(struct ieee80211_hw *hw,
struct ieee80211_txq *txq)
{
@ -3832,6 +3822,9 @@ bool ieee80211_txq_airtime_check(struct ieee80211_hw *hw,
if (!wiphy_ext_feature_isset(local->hw.wiphy, NL80211_EXT_FEATURE_AQL))
return true;
if (static_branch_unlikely(&aql_disable))
return true;
if (!txq->sta)
return true;

14
net/mac80211/util.c
View File

@ -832,7 +832,7 @@ void ieee80211_iterate_active_interfaces_atomic(
}
EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_atomic);
void ieee80211_iterate_active_interfaces_rtnl(
void ieee80211_iterate_active_interfaces_mtx(
struct ieee80211_hw *hw, u32 iter_flags,
void (*iterator)(void *data, u8 *mac,
struct ieee80211_vif *vif),
@ -840,12 +840,12 @@ void ieee80211_iterate_active_interfaces_rtnl(
{
struct ieee80211_local *local = hw_to_local(hw);
ASSERT_RTNL();
lockdep_assert_wiphy(hw->wiphy);
__iterate_interfaces(local, iter_flags | IEEE80211_IFACE_ITER_ACTIVE,
iterator, data);
}
EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_rtnl);
EXPORT_SYMBOL_GPL(ieee80211_iterate_active_interfaces_mtx);
static void __iterate_stations(struct ieee80211_local *local,
void (*iterator)(void *data,
@ -2595,7 +2595,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
mutex_unlock(&local->mtx);
if (sched_scan_stopped)
cfg80211_sched_scan_stopped_rtnl(local->hw.wiphy, 0);
cfg80211_sched_scan_stopped_locked(local->hw.wiphy, 0);
wake_up:
@ -3811,7 +3811,7 @@ void ieee80211_dfs_cac_cancel(struct ieee80211_local *local)
struct cfg80211_chan_def chandef;
/* for interface list, to avoid linking iflist_mtx and chanctx_mtx */
ASSERT_RTNL();
lockdep_assert_wiphy(local->hw.wiphy);
mutex_lock(&local->mtx);
list_for_each_entry(sdata, &local->interfaces, list) {
@ -3851,9 +3851,9 @@ void ieee80211_dfs_radar_detected_work(struct work_struct *work)
}
mutex_unlock(&local->chanctx_mtx);
rtnl_lock();
wiphy_lock(local->hw.wiphy);
ieee80211_dfs_cac_cancel(local);
rtnl_unlock();
wiphy_unlock(local->hw.wiphy);
if (num_chanctx > 1)
/* XXX: multi-channel is not supported yet */

9
net/mac80211/vht.c
View File

@ -484,6 +484,7 @@ enum ieee80211_sta_rx_bandwidth ieee80211_sta_cur_vht_bw(struct sta_info *sta)
void ieee80211_sta_set_rx_nss(struct sta_info *sta)
{
u8 ht_rx_nss = 0, vht_rx_nss = 0, he_rx_nss = 0, rx_nss;
bool support_160;
/* if we received a notification already don't overwrite it */
if (sta->sta.rx_nss)
@ -514,7 +515,13 @@ void ieee80211_sta_set_rx_nss(struct sta_info *sta)
}
}
he_rx_nss = min(rx_mcs_80, rx_mcs_160);
support_160 = he_cap->he_cap_elem.phy_cap_info[0] &
IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
if (support_160)
he_rx_nss = min(rx_mcs_80, rx_mcs_160);
else
he_rx_nss = rx_mcs_80;
}
if (sta->sta.ht_cap.ht_supported) {

5
net/wireless/chan.c
View File

@ -1093,7 +1093,7 @@ static bool cfg80211_ir_permissive_chan(struct wiphy *wiphy,
struct wireless_dev *wdev;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
if (!IS_ENABLED(CONFIG_CFG80211_REG_RELAX_NO_IR) ||
!(wiphy->regulatory_flags & REGULATORY_ENABLE_RELAX_NO_IR))
@ -1216,9 +1216,10 @@ bool cfg80211_reg_can_beacon_relax(struct wiphy *wiphy,
struct cfg80211_chan_def *chandef,
enum nl80211_iftype iftype)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
bool check_no_ir;
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
/*
* Under certain conditions suggested by some regulatory bodies a

163
net/wireless/core.c
View File

@ -222,7 +222,7 @@ static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data)
void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev)
{
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_P2P_DEVICE))
return;
@ -247,7 +247,7 @@ void cfg80211_stop_p2p_device(struct cfg80211_registered_device *rdev,
void cfg80211_stop_nan(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev)
{
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
if (WARN_ON(wdev->iftype != NL80211_IFTYPE_NAN))
return;
@ -273,7 +273,11 @@ void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy)
dev_close(wdev->netdev);
continue;
}
/* otherwise, check iftype */
wiphy_lock(wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_P2P_DEVICE:
cfg80211_stop_p2p_device(rdev, wdev);
@ -284,6 +288,8 @@ void cfg80211_shutdown_all_interfaces(struct wiphy *wiphy)
default:
break;
}
wiphy_unlock(wiphy);
}
}
EXPORT_SYMBOL_GPL(cfg80211_shutdown_all_interfaces);
@ -318,9 +324,9 @@ static void cfg80211_event_work(struct work_struct *work)
rdev = container_of(work, struct cfg80211_registered_device,
event_work);
rtnl_lock();
wiphy_lock(&rdev->wiphy);
cfg80211_process_rdev_events(rdev);
rtnl_unlock();
wiphy_unlock(&rdev->wiphy);
}
void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev)
@ -475,6 +481,7 @@ struct wiphy *wiphy_new_nm(const struct cfg80211_ops *ops, int sizeof_priv,
}
}
mutex_init(&rdev->wiphy.mtx);
INIT_LIST_HEAD(&rdev->wiphy.wdev_list);
INIT_LIST_HEAD(&rdev->beacon_registrations);
spin_lock_init(&rdev->beacon_registrations_lock);
@ -1007,15 +1014,16 @@ void wiphy_unregister(struct wiphy *wiphy)
wait_event(rdev->dev_wait, ({
int __count;
rtnl_lock();
wiphy_lock(&rdev->wiphy);
__count = rdev->opencount;
rtnl_unlock();
wiphy_unlock(&rdev->wiphy);
__count == 0; }));
if (rdev->rfkill)
rfkill_unregister(rdev->rfkill);
rtnl_lock();
wiphy_lock(&rdev->wiphy);
nl80211_notify_wiphy(rdev, NL80211_CMD_DEL_WIPHY);
rdev->wiphy.registered = false;
@ -1038,6 +1046,7 @@ void wiphy_unregister(struct wiphy *wiphy)
cfg80211_rdev_list_generation++;
device_del(&rdev->wiphy.dev);
wiphy_unlock(&rdev->wiphy);
rtnl_unlock();
flush_work(&rdev->scan_done_wk);
@ -1070,6 +1079,7 @@ void cfg80211_dev_free(struct cfg80211_registered_device *rdev)
}
list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list)
cfg80211_put_bss(&rdev->wiphy, &scan->pub);
mutex_destroy(&rdev->wiphy.mtx);
kfree(rdev);
}
@ -1094,19 +1104,28 @@ void cfg80211_cqm_config_free(struct wireless_dev *wdev)
wdev->cqm_config = NULL;
}
static void __cfg80211_unregister_wdev(struct wireless_dev *wdev, bool sync)
static void _cfg80211_unregister_wdev(struct wireless_dev *wdev,
bool unregister_netdev)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
flush_work(&wdev->pmsr_free_wk);
nl80211_notify_iface(rdev, wdev, NL80211_CMD_DEL_INTERFACE);
wdev->registered = false;
if (wdev->netdev) {
sysfs_remove_link(&wdev->netdev->dev.kobj, "phy80211");
if (unregister_netdev)
unregister_netdevice(wdev->netdev);
}
list_del_rcu(&wdev->list);
if (sync)
synchronize_rcu();
synchronize_net();
rdev->devlist_generation++;
cfg80211_mlme_purge_registrations(wdev);
@ -1131,14 +1150,23 @@ static void __cfg80211_unregister_wdev(struct wireless_dev *wdev, bool sync)
flush_work(&wdev->disconnect_wk);
cfg80211_cqm_config_free(wdev);
/*
* Ensure that all events have been processed and
* freed.
*/
cfg80211_process_wdev_events(wdev);
if (WARN_ON(wdev->current_bss)) {
cfg80211_unhold_bss(wdev->current_bss);
cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
wdev->current_bss = NULL;
}
}
void cfg80211_unregister_wdev(struct wireless_dev *wdev)
{
if (WARN_ON(wdev->netdev))
return;
__cfg80211_unregister_wdev(wdev, true);
_cfg80211_unregister_wdev(wdev, true);
}
EXPORT_SYMBOL(cfg80211_unregister_wdev);
@ -1149,7 +1177,7 @@ static const struct device_type wiphy_type = {
void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
enum nl80211_iftype iftype, int num)
{
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
rdev->num_running_ifaces += num;
if (iftype == NL80211_IFTYPE_MONITOR)
@ -1162,7 +1190,7 @@ void __cfg80211_leave(struct cfg80211_registered_device *rdev,
struct net_device *dev = wdev->netdev;
struct cfg80211_sched_scan_request *pos, *tmp;
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
ASSERT_WDEV_LOCK(wdev);
cfg80211_pmsr_wdev_down(wdev);
@ -1279,6 +1307,9 @@ void cfg80211_init_wdev(struct wireless_dev *wdev)
void cfg80211_register_wdev(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev)
{
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
/*
* We get here also when the interface changes network namespaces,
* as it's registered into the new one, but we don't want it to
@ -1290,10 +1321,49 @@ void cfg80211_register_wdev(struct cfg80211_registered_device *rdev,
wdev->identifier = ++rdev->wdev_id;
list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list);
rdev->devlist_generation++;
wdev->registered = true;
nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE);
}
int cfg80211_register_netdevice(struct net_device *dev)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev;
int ret;
ASSERT_RTNL();
if (WARN_ON(!wdev))
return -EINVAL;
rdev = wiphy_to_rdev(wdev->wiphy);
lockdep_assert_held(&rdev->wiphy.mtx);
/* we'll take care of this */
wdev->registered = true;
ret = register_netdevice(dev);
if (ret)
goto out;
if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj,
"phy80211")) {
pr_err("failed to add phy80211 symlink to netdev!\n");
unregister_netdevice(dev);
ret = -EINVAL;
goto out;
}
cfg80211_register_wdev(rdev, wdev);
ret = 0;
out:
if (ret)
wdev->registered = false;
return ret;
}
EXPORT_SYMBOL(cfg80211_register_netdevice);
static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
unsigned long state, void *ptr)
{
@ -1319,22 +1389,30 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
cfg80211_init_wdev(wdev);
break;
case NETDEV_REGISTER:
/*
* NB: cannot take rdev->mtx here because this may be
* called within code protected by it when interfaces
* are added with nl80211.
*/
if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj,
"phy80211")) {
pr_err("failed to add phy80211 symlink to netdev!\n");
if (!wdev->registered) {
wiphy_lock(&rdev->wiphy);
cfg80211_register_wdev(rdev, wdev);
wiphy_unlock(&rdev->wiphy);
}
break;
case NETDEV_UNREGISTER:
/*
* It is possible to get NETDEV_UNREGISTER multiple times,
* so check wdev->registered.
*/
if (wdev->registered) {
wiphy_lock(&rdev->wiphy);
_cfg80211_unregister_wdev(wdev, false);
wiphy_unlock(&rdev->wiphy);
}
cfg80211_register_wdev(rdev, wdev);
break;
case NETDEV_GOING_DOWN:
wiphy_lock(&rdev->wiphy);
cfg80211_leave(rdev, wdev);
wiphy_unlock(&rdev->wiphy);
break;
case NETDEV_DOWN:
wiphy_lock(&rdev->wiphy);
cfg80211_update_iface_num(rdev, wdev->iftype, -1);
if (rdev->scan_req && rdev->scan_req->wdev == wdev) {
if (WARN_ON(!rdev->scan_req->notified &&
@ -1351,9 +1429,11 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
}
rdev->opencount--;
wiphy_unlock(&rdev->wiphy);
wake_up(&rdev->dev_wait);
break;
case NETDEV_UP:
wiphy_lock(&rdev->wiphy);
cfg80211_update_iface_num(rdev, wdev->iftype, 1);
wdev_lock(wdev);
switch (wdev->iftype) {
@ -1400,38 +1480,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
/* assume this means it's off */
wdev->ps = false;
}
break;
case NETDEV_UNREGISTER:
/*
* It is possible to get NETDEV_UNREGISTER
* multiple times. To detect that, check
* that the interface is still on the list
* of registered interfaces, and only then
* remove and clean it up.
*/
if (!list_empty(&wdev->list)) {
__cfg80211_unregister_wdev(wdev, false);
sysfs_remove_link(&dev->dev.kobj, "phy80211");
}
/*
* synchronise (so that we won't find this netdev
* from other code any more) and then clear the list
* head so that the above code can safely check for
* !list_empty() to avoid double-cleanup.
*/
synchronize_rcu();
INIT_LIST_HEAD(&wdev->list);
/*
* Ensure that all events have been processed and
* freed.
*/
cfg80211_process_wdev_events(wdev);
if (WARN_ON(wdev->current_bss)) {
cfg80211_unhold_bss(wdev->current_bss);
cfg80211_put_bss(wdev->wiphy, &wdev->current_bss->pub);
wdev->current_bss = NULL;
}
wiphy_unlock(&rdev->wiphy);
break;
case NETDEV_PRE_UP:
if (!cfg80211_iftype_allowed(wdev->wiphy, wdev->iftype,

2
net/wireless/core.h
View File

@ -231,7 +231,7 @@ static inline void wdev_unlock(struct wireless_dev *wdev)
static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
{
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
rdev->num_running_ifaces > 0;

4
net/wireless/debugfs.c
View File

@ -73,8 +73,6 @@ static ssize_t ht40allow_map_read(struct file *file,
if (!buf)
return -ENOMEM;
rtnl_lock();
for (band = 0; band < NUM_NL80211_BANDS; band++) {
sband = wiphy->bands[band];
if (!sband)
@ -84,8 +82,6 @@ static ssize_t ht40allow_map_read(struct file *file,
buf, buf_size, offset);
}
rtnl_unlock();
r = simple_read_from_buffer(user_buf, count, ppos, buf, offset);
kfree(buf);

3
net/wireless/ibss.c
View File

@ -3,6 +3,7 @@
* Some IBSS support code for cfg80211.
*
* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
* Copyright (C) 2020-2021 Intel Corporation
*/
#include <linux/etherdevice.h>
@ -92,7 +93,7 @@ int __cfg80211_join_ibss(struct cfg80211_registered_device *rdev,
struct wireless_dev *wdev = dev->ieee80211_ptr;
int err;
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
ASSERT_WDEV_LOCK(wdev);
if (wdev->ssid_len)

6
net/wireless/mlme.c
View File

@ -450,7 +450,7 @@ static void cfg80211_mgmt_registrations_update(struct wireless_dev *wdev)
struct cfg80211_mgmt_registration *reg;
struct mgmt_frame_regs upd = {};
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
spin_lock_bh(&wdev->mgmt_registrations_lock);
if (!wdev->mgmt_registrations_need_update) {
@ -492,10 +492,10 @@ void cfg80211_mgmt_registrations_update_wk(struct work_struct *wk)
rdev = container_of(wk, struct cfg80211_registered_device,
mgmt_registrations_update_wk);
rtnl_lock();
wiphy_lock(&rdev->wiphy);
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
cfg80211_mgmt_registrations_update(wdev);
rtnl_unlock();
wiphy_unlock(&rdev->wiphy);
}
int cfg80211_mlme_register_mgmt(struct wireless_dev *wdev, u32 snd_portid,

657
net/wireless/nl80211.c
View File

File diff suppressed because it is too large Load Diff

103
net/wireless/reg.c
View File

@ -142,12 +142,15 @@ static const struct ieee80211_regdomain *get_cfg80211_regdom(void)
/*
* Returns the regulatory domain associated with the wiphy.
*
* Requires either RTNL or RCU protection
* Requires any of RTNL, wiphy mutex or RCU protection.
*/
const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy)
{
return rcu_dereference_rtnl(wiphy->regd);
return rcu_dereference_check(wiphy->regd,
lockdep_is_held(&wiphy->mtx) ||
lockdep_rtnl_is_held());
}
EXPORT_SYMBOL(get_wiphy_regdom);
static const char *reg_dfs_region_str(enum nl80211_dfs_regions dfs_region)
{
@ -169,7 +172,9 @@ enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy)
const struct ieee80211_regdomain *regd = NULL;
const struct ieee80211_regdomain *wiphy_regd = NULL;
rcu_read_lock();
regd = get_cfg80211_regdom();
if (!wiphy)
goto out;
@ -186,6 +191,8 @@ enum nl80211_dfs_regions reg_get_dfs_region(struct wiphy *wiphy)
reg_dfs_region_str(regd->dfs_region));
out:
rcu_read_unlock();
return regd->dfs_region;
}
@ -2577,11 +2584,13 @@ void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
return;
rtnl_lock();
wiphy_lock(wiphy);
tmp = get_wiphy_regdom(wiphy);
rcu_assign_pointer(wiphy->regd, new_regd);
rcu_free_regdom(tmp);
wiphy_unlock(wiphy);
rtnl_unlock();
}
EXPORT_SYMBOL(wiphy_apply_custom_regulatory);
@ -2744,7 +2753,10 @@ reg_process_hint_driver(struct wiphy *wiphy,
return REG_REQ_IGNORE;
tmp = get_wiphy_regdom(wiphy);
ASSERT_RTNL();
wiphy_lock(wiphy);
rcu_assign_pointer(wiphy->regd, regd);
wiphy_unlock(wiphy);
rcu_free_regdom(tmp);
}
@ -3076,41 +3088,52 @@ static void reg_process_pending_beacon_hints(void)
spin_unlock_bh(&reg_pending_beacons_lock);
}
static void reg_process_self_managed_hints(void)
static void reg_process_self_managed_hint(struct wiphy *wiphy)
{
struct cfg80211_registered_device *rdev;
struct wiphy *wiphy;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
const struct ieee80211_regdomain *tmp;
const struct ieee80211_regdomain *regd;
enum nl80211_band band;
struct regulatory_request request = {};
ASSERT_RTNL();
lockdep_assert_wiphy(wiphy);
spin_lock(&reg_requests_lock);
regd = rdev->requested_regd;
rdev->requested_regd = NULL;
spin_unlock(&reg_requests_lock);
if (!regd)
return;
tmp = get_wiphy_regdom(wiphy);
rcu_assign_pointer(wiphy->regd, regd);
rcu_free_regdom(tmp);
for (band = 0; band < NUM_NL80211_BANDS; band++)
handle_band_custom(wiphy, wiphy->bands[band], regd);
reg_process_ht_flags(wiphy);
request.wiphy_idx = get_wiphy_idx(wiphy);
request.alpha2[0] = regd->alpha2[0];
request.alpha2[1] = regd->alpha2[1];
request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
nl80211_send_wiphy_reg_change_event(&request);
}
static void reg_process_self_managed_hints(void)
{
struct cfg80211_registered_device *rdev;
ASSERT_RTNL();
list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
wiphy = &rdev->wiphy;
spin_lock(&reg_requests_lock);
regd = rdev->requested_regd;
rdev->requested_regd = NULL;
spin_unlock(&reg_requests_lock);
if (regd == NULL)
continue;
tmp = get_wiphy_regdom(wiphy);
rcu_assign_pointer(wiphy->regd, regd);
rcu_free_regdom(tmp);
for (band = 0; band < NUM_NL80211_BANDS; band++)
handle_band_custom(wiphy, wiphy->bands[band], regd);
reg_process_ht_flags(wiphy);
request.wiphy_idx = get_wiphy_idx(wiphy);
request.alpha2[0] = regd->alpha2[0];
request.alpha2[1] = regd->alpha2[1];
request.initiator = NL80211_REGDOM_SET_BY_DRIVER;
nl80211_send_wiphy_reg_change_event(&request);
wiphy_lock(&rdev->wiphy);
reg_process_self_managed_hint(&rdev->wiphy);
wiphy_unlock(&rdev->wiphy);
}
reg_check_channels();
@ -3789,14 +3812,21 @@ static int reg_set_rd_driver(const struct ieee80211_regdomain *rd,
return -ENODEV;
if (!driver_request->intersect) {
if (request_wiphy->regd)
ASSERT_RTNL();
wiphy_lock(request_wiphy);
if (request_wiphy->regd) {
wiphy_unlock(request_wiphy);
return -EALREADY;
}
regd = reg_copy_regd(rd);
if (IS_ERR(regd))
if (IS_ERR(regd)) {
wiphy_unlock(request_wiphy);
return PTR_ERR(regd);
}
rcu_assign_pointer(request_wiphy->regd, regd);
wiphy_unlock(request_wiphy);
reset_regdomains(false, rd);
return 0;
}
@ -3978,8 +4008,8 @@ int regulatory_set_wiphy_regd(struct wiphy *wiphy,
}
EXPORT_SYMBOL(regulatory_set_wiphy_regd);
int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
struct ieee80211_regdomain *rd)
int regulatory_set_wiphy_regd_sync(struct wiphy *wiphy,
struct ieee80211_regdomain *rd)
{
int ret;
@ -3990,10 +4020,11 @@ int regulatory_set_wiphy_regd_sync_rtnl(struct wiphy *wiphy,
return ret;
/* process the request immediately */
reg_process_self_managed_hints();
reg_process_self_managed_hint(wiphy);
reg_check_channels();
return 0;
}
EXPORT_SYMBOL(regulatory_set_wiphy_regd_sync_rtnl);
EXPORT_SYMBOL(regulatory_set_wiphy_regd_sync);
void wiphy_regulatory_register(struct wiphy *wiphy)
{

1
net/wireless/reg.h
View File

@ -63,7 +63,6 @@ unsigned int reg_get_max_bandwidth(const struct ieee80211_regdomain *rd,
const struct ieee80211_reg_rule *rule);
bool reg_last_request_cell_base(void);
const struct ieee80211_regdomain *get_wiphy_regdom(struct wiphy *wiphy);
/**
* regulatory_hint_found_beacon - hints a beacon was found on a channel

35
net/wireless/scan.c
View File

@ -918,7 +918,7 @@ void ___cfg80211_scan_done(struct cfg80211_registered_device *rdev,
union iwreq_data wrqu;
#endif
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
if (rdev->scan_msg) {
nl80211_send_scan_msg(rdev, rdev->scan_msg);
@ -987,9 +987,9 @@ void __cfg80211_scan_done(struct work_struct *wk)
rdev = container_of(wk, struct cfg80211_registered_device,
scan_done_wk);
rtnl_lock();
wiphy_lock(&rdev->wiphy);
___cfg80211_scan_done(rdev, true);
rtnl_unlock();
wiphy_unlock(&rdev->wiphy);
}
void cfg80211_scan_done(struct cfg80211_scan_request *request,
@ -1022,7 +1022,7 @@ EXPORT_SYMBOL(cfg80211_scan_done);
void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev,
struct cfg80211_sched_scan_request *req)
{
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
list_add_rcu(&req->list, &rdev->sched_scan_req_list);
}
@ -1030,7 +1030,7 @@ void cfg80211_add_sched_scan_req(struct cfg80211_registered_device *rdev,
static void cfg80211_del_sched_scan_req(struct cfg80211_registered_device *rdev,
struct cfg80211_sched_scan_request *req)
{
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
list_del_rcu(&req->list);
kfree_rcu(req, rcu_head);
@ -1042,7 +1042,7 @@ cfg80211_find_sched_scan_req(struct cfg80211_registered_device *rdev, u64 reqid)
struct cfg80211_sched_scan_request *pos;
list_for_each_entry_rcu(pos, &rdev->sched_scan_req_list, list,
lockdep_rtnl_is_held()) {
lockdep_is_held(&rdev->wiphy.mtx)) {
if (pos->reqid == reqid)
return pos;
}
@ -1090,7 +1090,7 @@ void cfg80211_sched_scan_results_wk(struct work_struct *work)
rdev = container_of(work, struct cfg80211_registered_device,
sched_scan_res_wk);
rtnl_lock();
wiphy_lock(&rdev->wiphy);
list_for_each_entry_safe(req, tmp, &rdev->sched_scan_req_list, list) {
if (req->report_results) {
req->report_results = false;
@ -1105,7 +1105,7 @@ void cfg80211_sched_scan_results_wk(struct work_struct *work)
NL80211_CMD_SCHED_SCAN_RESULTS);
}
}
rtnl_unlock();
wiphy_unlock(&rdev->wiphy);
}
void cfg80211_sched_scan_results(struct wiphy *wiphy, u64 reqid)
@ -1126,23 +1126,23 @@ void cfg80211_sched_scan_results(struct wiphy *wiphy, u64 reqid)
}
EXPORT_SYMBOL(cfg80211_sched_scan_results);
void cfg80211_sched_scan_stopped_rtnl(struct wiphy *wiphy, u64 reqid)
void cfg80211_sched_scan_stopped_locked(struct wiphy *wiphy, u64 reqid)
{
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy);
ASSERT_RTNL();
lockdep_assert_held(&wiphy->mtx);
trace_cfg80211_sched_scan_stopped(wiphy, reqid);
__cfg80211_stop_sched_scan(rdev, reqid, true);
}
EXPORT_SYMBOL(cfg80211_sched_scan_stopped_rtnl);
EXPORT_SYMBOL(cfg80211_sched_scan_stopped_locked);
void cfg80211_sched_scan_stopped(struct wiphy *wiphy, u64 reqid)
{
rtnl_lock();
cfg80211_sched_scan_stopped_rtnl(wiphy, reqid);
rtnl_unlock();
wiphy_lock(wiphy);
cfg80211_sched_scan_stopped_locked(wiphy, reqid);
wiphy_unlock(wiphy);
}
EXPORT_SYMBOL(cfg80211_sched_scan_stopped);
@ -1150,7 +1150,7 @@ int cfg80211_stop_sched_scan_req(struct cfg80211_registered_device *rdev,
struct cfg80211_sched_scan_request *req,
bool driver_initiated)
{
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
if (!driver_initiated) {
int err = rdev_sched_scan_stop(rdev, req->dev, req->reqid);
@ -1170,7 +1170,7 @@ int __cfg80211_stop_sched_scan(struct cfg80211_registered_device *rdev,
{
struct cfg80211_sched_scan_request *sched_scan_req;
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
sched_scan_req = cfg80211_find_sched_scan_req(rdev, reqid);
if (!sched_scan_req)
@ -2774,6 +2774,8 @@ int cfg80211_wext_siwscan(struct net_device *dev,
eth_broadcast_addr(creq->bssid);
wiphy_lock(&rdev->wiphy);
rdev->scan_req = creq;
err = rdev_scan(rdev, creq);
if (err) {
@ -2785,6 +2787,7 @@ int cfg80211_wext_siwscan(struct net_device *dev,
creq = NULL;
dev_hold(dev);
}
wiphy_unlock(&rdev->wiphy);
out:
kfree(creq);
return err;

5
net/wireless/sme.c
View File

@ -67,7 +67,6 @@ static int cfg80211_conn_scan(struct wireless_dev *wdev)
struct cfg80211_scan_request *request;
int n_channels, err;
ASSERT_RTNL();
ASSERT_WDEV_LOCK(wdev);
if (rdev->scan_req || rdev->scan_msg)
@ -233,7 +232,7 @@ void cfg80211_conn_work(struct work_struct *work)
u8 bssid_buf[ETH_ALEN], *bssid = NULL;
enum nl80211_timeout_reason treason;
rtnl_lock();
wiphy_lock(&rdev->wiphy);
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) {
if (!wdev->netdev)
@ -266,7 +265,7 @@ void cfg80211_conn_work(struct work_struct *work)
wdev_unlock(wdev);
}
rtnl_unlock();
wiphy_unlock(&rdev->wiphy);
}
/* Returned bss is reference counted and must be cleaned up appropriately. */

5
net/wireless/sysfs.c
View File

@ -5,6 +5,7 @@
*
* Copyright 2005-2006 Jiri Benc <jbenc@suse.cz>
* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
* Copyright (C) 2020-2021 Intel Corporation
*/
#include <linux/device.h>
@ -104,6 +105,7 @@ static int wiphy_suspend(struct device *dev)
rdev->suspend_at = ktime_get_boottime_seconds();
rtnl_lock();
wiphy_lock(&rdev->wiphy);
if (rdev->wiphy.registered) {
if (!rdev->wiphy.wowlan_config) {
cfg80211_leave_all(rdev);
@ -118,6 +120,7 @@ static int wiphy_suspend(struct device *dev)
ret = rdev_suspend(rdev, NULL);
}
}
wiphy_unlock(&rdev->wiphy);
rtnl_unlock();
return ret;
@ -132,8 +135,10 @@ static int wiphy_resume(struct device *dev)
cfg80211_bss_age(rdev, ktime_get_boottime_seconds() - rdev->suspend_at);
rtnl_lock();
wiphy_lock(&rdev->wiphy);
if (rdev->wiphy.registered && rdev->ops->resume)
ret = rdev_resume(rdev);
wiphy_unlock(&rdev->wiphy);
rtnl_unlock();
return ret;

39
net/wireless/util.c
View File

@ -997,7 +997,7 @@ void cfg80211_process_rdev_events(struct cfg80211_registered_device *rdev)
{
struct wireless_dev *wdev;
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
cfg80211_process_wdev_events(wdev);
@ -1010,7 +1010,7 @@ int cfg80211_change_iface(struct cfg80211_registered_device *rdev,
int err;
enum nl80211_iftype otype = dev->ieee80211_ptr->iftype;
ASSERT_RTNL();
lockdep_assert_held(&rdev->wiphy.mtx);
/* don't support changing VLANs, you just re-create them */
if (otype == NL80211_IFTYPE_AP_VLAN)
@ -1188,6 +1188,25 @@ static u32 cfg80211_calculate_bitrate_dmg(struct rate_info *rate)
return __mcs2bitrate[rate->mcs];
}
static u32 cfg80211_calculate_bitrate_extended_sc_dmg(struct rate_info *rate)
{
static const u32 __mcs2bitrate[] = {
[6 - 6] = 26950, /* MCS 9.1 : 2695.0 mbps */
[7 - 6] = 50050, /* MCS 12.1 */
[8 - 6] = 53900,
[9 - 6] = 57750,
[10 - 6] = 63900,
[11 - 6] = 75075,
[12 - 6] = 80850,
};
/* Extended SC MCS not defined for base MCS below 6 or above 12 */
if (WARN_ON_ONCE(rate->mcs < 6 || rate->mcs > 12))
return 0;
return __mcs2bitrate[rate->mcs - 6];
}
static u32 cfg80211_calculate_bitrate_edmg(struct rate_info *rate)
{
static const u32 __mcs2bitrate[] = {
@ -1224,7 +1243,7 @@ static u32 cfg80211_calculate_bitrate_edmg(struct rate_info *rate)
static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate)
{
static const u32 base[4][10] = {
static const u32 base[4][12] = {
{ 6500000,
13000000,
19500000,
@ -1235,7 +1254,9 @@ static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate)
65000000,
78000000,
/* not in the spec, but some devices use this: */
86500000,
86700000,
97500000,
108300000,
},
{ 13500000,
27000000,
@ -1247,6 +1268,8 @@ static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate)
135000000,
162000000,
180000000,
202500000,
225000000,
},
{ 29300000,
58500000,
@ -1258,6 +1281,8 @@ static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate)
292500000,
351000000,
390000000,
438800000,
487500000,
},
{ 58500000,
117000000,
@ -1269,12 +1294,14 @@ static u32 cfg80211_calculate_bitrate_vht(struct rate_info *rate)
585000000,
702000000,
780000000,
877500000,
975000000,
},
};
u32 bitrate;
int idx;
if (rate->mcs > 9)
if (rate->mcs > 11)
goto warn;
switch (rate->bw) {
@ -1398,6 +1425,8 @@ u32 cfg80211_calculate_bitrate(struct rate_info *rate)
return cfg80211_calculate_bitrate_ht(rate);
if (rate->flags & RATE_INFO_FLAGS_DMG)
return cfg80211_calculate_bitrate_dmg(rate);
if (rate->flags & RATE_INFO_FLAGS_EXTENDED_SC_DMG)
return cfg80211_calculate_bitrate_extended_sc_dmg(rate);
if (rate->flags & RATE_INFO_FLAGS_EDMG)
return cfg80211_calculate_bitrate_edmg(rate);
if (rate->flags & RATE_INFO_FLAGS_VHT_MCS)

271
net/wireless/wext-compat.c
View File

@ -7,7 +7,7 @@
* we directly assign the wireless handlers of wireless interfaces.
*
* Copyright 2008-2009 Johannes Berg <johannes@sipsolutions.net>
* Copyright (C) 2019 Intel Corporation
* Copyright (C) 2019-2021 Intel Corporation
*/
#include <linux/export.h>
@ -253,17 +253,23 @@ int cfg80211_wext_siwrts(struct net_device *dev,
u32 orts = wdev->wiphy->rts_threshold;
int err;
if (rts->disabled || !rts->fixed)
wiphy_lock(&rdev->wiphy);
if (rts->disabled || !rts->fixed) {
wdev->wiphy->rts_threshold = (u32) -1;
else if (rts->value < 0)
return -EINVAL;
else
} else if (rts->value < 0) {
err = -EINVAL;
goto out;
} else {
wdev->wiphy->rts_threshold = rts->value;
}
err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_RTS_THRESHOLD);
if (err)
wdev->wiphy->rts_threshold = orts;
out:
wiphy_unlock(&rdev->wiphy);
return err;
}
EXPORT_WEXT_HANDLER(cfg80211_wext_siwrts);
@ -291,11 +297,13 @@ int cfg80211_wext_siwfrag(struct net_device *dev,
u32 ofrag = wdev->wiphy->frag_threshold;
int err;
if (frag->disabled || !frag->fixed)
wiphy_lock(&rdev->wiphy);
if (frag->disabled || !frag->fixed) {
wdev->wiphy->frag_threshold = (u32) -1;
else if (frag->value < 256)
return -EINVAL;
else {
} else if (frag->value < 256) {
err = -EINVAL;
goto out;
} else {
/* Fragment length must be even, so strip LSB. */
wdev->wiphy->frag_threshold = frag->value & ~0x1;
}
@ -303,6 +311,8 @@ int cfg80211_wext_siwfrag(struct net_device *dev,
err = rdev_set_wiphy_params(rdev, WIPHY_PARAM_FRAG_THRESHOLD);
if (err)
wdev->wiphy->frag_threshold = ofrag;
out:
wiphy_unlock(&rdev->wiphy);
return err;
}
@ -337,6 +347,7 @@ static int cfg80211_wext_siwretry(struct net_device *dev,
(retry->flags & IW_RETRY_TYPE) != IW_RETRY_LIMIT)
return -EINVAL;
wiphy_lock(&rdev->wiphy);
if (retry->flags & IW_RETRY_LONG) {
wdev->wiphy->retry_long = retry->value;
changed |= WIPHY_PARAM_RETRY_LONG;
@ -355,6 +366,7 @@ static int cfg80211_wext_siwretry(struct net_device *dev,
wdev->wiphy->retry_short = oshort;
wdev->wiphy->retry_long = olong;
}
wiphy_unlock(&rdev->wiphy);
return err;
}
@ -577,15 +589,18 @@ static int cfg80211_wext_siwencode(struct net_device *dev,
!rdev->ops->set_default_key)
return -EOPNOTSUPP;
wiphy_lock(&rdev->wiphy);
idx = erq->flags & IW_ENCODE_INDEX;
if (idx == 0) {
idx = wdev->wext.default_key;
if (idx < 0)
idx = 0;
} else if (idx < 1 || idx > 4)
return -EINVAL;
else
} else if (idx < 1 || idx > 4) {
err = -EINVAL;
goto out;
} else {
idx--;
}
if (erq->flags & IW_ENCODE_DISABLED)
remove = true;
@ -599,22 +614,28 @@ static int cfg80211_wext_siwencode(struct net_device *dev,
if (!err)
wdev->wext.default_key = idx;
wdev_unlock(wdev);
return err;
goto out;
}
memset(&params, 0, sizeof(params));
params.key = keybuf;
params.key_len = erq->length;
if (erq->length == 5)
if (erq->length == 5) {
params.cipher = WLAN_CIPHER_SUITE_WEP40;
else if (erq->length == 13)
} else if (erq->length == 13) {
params.cipher = WLAN_CIPHER_SUITE_WEP104;
else if (!remove)
return -EINVAL;
} else if (!remove) {
err = -EINVAL;
goto out;
}
return cfg80211_set_encryption(rdev, dev, false, NULL, remove,
wdev->wext.default_key == -1,
idx, &params);
err = cfg80211_set_encryption(rdev, dev, false, NULL, remove,
wdev->wext.default_key == -1,
idx, &params);
out:
wiphy_unlock(&rdev->wiphy);
return err;
}
static int cfg80211_wext_siwencodeext(struct net_device *dev,
@ -754,38 +775,61 @@ static int cfg80211_wext_siwfreq(struct net_device *dev,
struct cfg80211_chan_def chandef = {
.width = NL80211_CHAN_WIDTH_20_NOHT,
};
int freq;
int freq, ret;
wiphy_lock(&rdev->wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_STATION:
return cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
ret = cfg80211_mgd_wext_siwfreq(dev, info, wextfreq, extra);
break;
case NL80211_IFTYPE_ADHOC:
return cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
ret = cfg80211_ibss_wext_siwfreq(dev, info, wextfreq, extra);
break;
case NL80211_IFTYPE_MONITOR:
freq = cfg80211_wext_freq(wextfreq);
if (freq < 0)
return freq;
if (freq == 0)
return -EINVAL;
if (freq < 0) {
ret = freq;
break;
}
if (freq == 0) {
ret = -EINVAL;
break;
}
chandef.center_freq1 = freq;
chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
if (!chandef.chan)
return -EINVAL;
return cfg80211_set_monitor_channel(rdev, &chandef);
if (!chandef.chan) {
ret = -EINVAL;
break;
}
ret = cfg80211_set_monitor_channel(rdev, &chandef);
break;
case NL80211_IFTYPE_MESH_POINT:
freq = cfg80211_wext_freq(wextfreq);
if (freq < 0)
return freq;
if (freq == 0)
return -EINVAL;
if (freq < 0) {
ret = freq;
break;
}
if (freq == 0) {
ret = -EINVAL;
break;
}
chandef.center_freq1 = freq;
chandef.chan = ieee80211_get_channel(&rdev->wiphy, freq);
if (!chandef.chan)
return -EINVAL;
return cfg80211_set_mesh_channel(rdev, wdev, &chandef);
if (!chandef.chan) {
ret = -EINVAL;
break;
}
ret = cfg80211_set_mesh_channel(rdev, wdev, &chandef);
break;
default:
return -EOPNOTSUPP;
ret = -EOPNOTSUPP;
break;
}
wiphy_unlock(&rdev->wiphy);
return ret;
}
static int cfg80211_wext_giwfreq(struct net_device *dev,
@ -797,24 +841,35 @@ static int cfg80211_wext_giwfreq(struct net_device *dev,
struct cfg80211_chan_def chandef = {};
int ret;
wiphy_lock(&rdev->wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_STATION:
return cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
ret = cfg80211_mgd_wext_giwfreq(dev, info, freq, extra);
break;
case NL80211_IFTYPE_ADHOC:
return cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
ret = cfg80211_ibss_wext_giwfreq(dev, info, freq, extra);
break;
case NL80211_IFTYPE_MONITOR:
if (!rdev->ops->get_channel)
return -EINVAL;
if (!rdev->ops->get_channel) {
ret = -EINVAL;
break;
}
ret = rdev_get_channel(rdev, wdev, &chandef);
if (ret)
return ret;
break;
freq->m = chandef.chan->center_freq;
freq->e = 6;
return 0;
ret = 0;
break;
default:
return -EINVAL;
ret = -EINVAL;
break;
}
wiphy_unlock(&rdev->wiphy);
return ret;
}
static int cfg80211_wext_siwtxpower(struct net_device *dev,
@ -825,6 +880,7 @@ static int cfg80211_wext_siwtxpower(struct net_device *dev,
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
enum nl80211_tx_power_setting type;
int dbm = 0;
int ret;
if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM)
return -EINVAL;
@ -866,7 +922,11 @@ static int cfg80211_wext_siwtxpower(struct net_device *dev,
return 0;
}
return rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
wiphy_lock(&rdev->wiphy);
ret = rdev_set_tx_power(rdev, wdev, type, DBM_TO_MBM(dbm));
wiphy_unlock(&rdev->wiphy);
return ret;
}
static int cfg80211_wext_giwtxpower(struct net_device *dev,
@ -885,7 +945,9 @@ static int cfg80211_wext_giwtxpower(struct net_device *dev,
if (!rdev->ops->get_tx_power)
return -EOPNOTSUPP;
wiphy_lock(&rdev->wiphy);
err = rdev_get_tx_power(rdev, wdev, &val);
wiphy_unlock(&rdev->wiphy);
if (err)
return err;
@ -1125,7 +1187,9 @@ static int cfg80211_wext_siwpower(struct net_device *dev,
timeout = wrq->value / 1000;
}
wiphy_lock(&rdev->wiphy);
err = rdev_set_power_mgmt(rdev, dev, ps, timeout);
wiphy_unlock(&rdev->wiphy);
if (err)
return err;
@ -1156,7 +1220,7 @@ static int cfg80211_wext_siwrate(struct net_device *dev,
struct cfg80211_bitrate_mask mask;
u32 fixed, maxrate;
struct ieee80211_supported_band *sband;
int band, ridx;
int band, ridx, ret;
bool match = false;
if (!rdev->ops->set_bitrate_mask)
@ -1195,7 +1259,11 @@ static int cfg80211_wext_siwrate(struct net_device *dev,
if (!match)
return -EINVAL;
return rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
wiphy_lock(&rdev->wiphy);
ret = rdev_set_bitrate_mask(rdev, dev, NULL, &mask);
wiphy_unlock(&rdev->wiphy);
return ret;
}
static int cfg80211_wext_giwrate(struct net_device *dev,
@ -1224,7 +1292,9 @@ static int cfg80211_wext_giwrate(struct net_device *dev,
if (err)
return err;
wiphy_lock(&rdev->wiphy);
err = rdev_get_station(rdev, dev, addr, &sinfo);
wiphy_unlock(&rdev->wiphy);
if (err)
return err;
@ -1249,6 +1319,7 @@ static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
static struct iw_statistics wstats;
static struct station_info sinfo = {};
u8 bssid[ETH_ALEN];
int ret;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
return NULL;
@ -1267,7 +1338,11 @@ static struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
memset(&sinfo, 0, sizeof(sinfo));
if (rdev_get_station(rdev, dev, bssid, &sinfo))
wiphy_lock(&rdev->wiphy);
ret = rdev_get_station(rdev, dev, bssid, &sinfo);
wiphy_unlock(&rdev->wiphy);
if (ret)
return NULL;
memset(&wstats, 0, sizeof(wstats));
@ -1318,15 +1393,24 @@ static int cfg80211_wext_siwap(struct net_device *dev,
struct sockaddr *ap_addr, char *extra)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
int ret;
wiphy_lock(&rdev->wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_ADHOC:
return cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
ret = cfg80211_ibss_wext_siwap(dev, info, ap_addr, extra);
break;
case NL80211_IFTYPE_STATION:
return cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
ret = cfg80211_mgd_wext_siwap(dev, info, ap_addr, extra);
break;
default:
return -EOPNOTSUPP;
ret = -EOPNOTSUPP;
break;
}
wiphy_unlock(&rdev->wiphy);
return ret;
}
static int cfg80211_wext_giwap(struct net_device *dev,
@ -1334,15 +1418,24 @@ static int cfg80211_wext_giwap(struct net_device *dev,
struct sockaddr *ap_addr, char *extra)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
int ret;
wiphy_lock(&rdev->wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_ADHOC:
return cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
ret = cfg80211_ibss_wext_giwap(dev, info, ap_addr, extra);
break;
case NL80211_IFTYPE_STATION:
return cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
ret = cfg80211_mgd_wext_giwap(dev, info, ap_addr, extra);
break;
default:
return -EOPNOTSUPP;
ret = -EOPNOTSUPP;
break;
}
wiphy_unlock(&rdev->wiphy);
return ret;
}
static int cfg80211_wext_siwessid(struct net_device *dev,
@ -1350,15 +1443,24 @@ static int cfg80211_wext_siwessid(struct net_device *dev,
struct iw_point *data, char *ssid)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
int ret;
wiphy_lock(&rdev->wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_ADHOC:
return cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
ret = cfg80211_ibss_wext_siwessid(dev, info, data, ssid);
break;
case NL80211_IFTYPE_STATION:
return cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
ret = cfg80211_mgd_wext_siwessid(dev, info, data, ssid);
break;
default:
return -EOPNOTSUPP;
ret = -EOPNOTSUPP;
break;
}
wiphy_unlock(&rdev->wiphy);
return ret;
}
static int cfg80211_wext_giwessid(struct net_device *dev,
@ -1366,18 +1468,27 @@ static int cfg80211_wext_giwessid(struct net_device *dev,
struct iw_point *data, char *ssid)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
int ret;
data->flags = 0;
data->length = 0;
wiphy_lock(&rdev->wiphy);
switch (wdev->iftype) {
case NL80211_IFTYPE_ADHOC:
return cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
ret = cfg80211_ibss_wext_giwessid(dev, info, data, ssid);
break;
case NL80211_IFTYPE_STATION:
return cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
ret = cfg80211_mgd_wext_giwessid(dev, info, data, ssid);
break;
default:
return -EOPNOTSUPP;
ret = -EOPNOTSUPP;
break;
}
wiphy_unlock(&rdev->wiphy);
return ret;
}
static int cfg80211_wext_siwpmksa(struct net_device *dev,
@ -1388,6 +1499,7 @@ static int cfg80211_wext_siwpmksa(struct net_device *dev,
struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy);
struct cfg80211_pmksa cfg_pmksa;
struct iw_pmksa *pmksa = (struct iw_pmksa *)extra;
int ret;
memset(&cfg_pmksa, 0, sizeof(struct cfg80211_pmksa));
@ -1397,28 +1509,39 @@ static int cfg80211_wext_siwpmksa(struct net_device *dev,
cfg_pmksa.bssid = pmksa->bssid.sa_data;
cfg_pmksa.pmkid = pmksa->pmkid;
wiphy_lock(&rdev->wiphy);
switch (pmksa->cmd) {
case IW_PMKSA_ADD:
if (!rdev->ops->set_pmksa)
return -EOPNOTSUPP;
return rdev_set_pmksa(rdev, dev, &cfg_pmksa);
if (!rdev->ops->set_pmksa) {
ret = -EOPNOTSUPP;
break;
}
ret = rdev_set_pmksa(rdev, dev, &cfg_pmksa);
break;
case IW_PMKSA_REMOVE:
if (!rdev->ops->del_pmksa)
return -EOPNOTSUPP;
return rdev_del_pmksa(rdev, dev, &cfg_pmksa);
if (!rdev->ops->del_pmksa) {
ret = -EOPNOTSUPP;
break;
}
ret = rdev_del_pmksa(rdev, dev, &cfg_pmksa);
break;
case IW_PMKSA_FLUSH:
if (!rdev->ops->flush_pmksa)
return -EOPNOTSUPP;
return rdev_flush_pmksa(rdev, dev);
if (!rdev->ops->flush_pmksa) {
ret = -EOPNOTSUPP;
break;
}
ret = rdev_flush_pmksa(rdev, dev);
break;
default:
return -EOPNOTSUPP;
ret = -EOPNOTSUPP;
break;
}
wiphy_unlock(&rdev->wiphy);
return ret;
}
#define DEFINE_WEXT_COMPAT_STUB(func, type) \

4
net/wireless/wext-sme.c
View File

@ -3,7 +3,7 @@
* cfg80211 wext compat for managed mode.
*
* Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
* Copyright (C) 2009 Intel Corporation. All rights reserved.
* Copyright (C) 2009, 2020-2021 Intel Corporation.
*/
#include <linux/export.h>
@ -379,6 +379,7 @@ int cfg80211_wext_siwmlme(struct net_device *dev,
if (mlme->addr.sa_family != ARPHRD_ETHER)
return -EINVAL;
wiphy_lock(&rdev->wiphy);
wdev_lock(wdev);
switch (mlme->cmd) {
case IW_MLME_DEAUTH:
@ -390,6 +391,7 @@ int cfg80211_wext_siwmlme(struct net_device *dev,
break;
}
wdev_unlock(wdev);
wiphy_unlock(&rdev->wiphy);
return err;
}