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Four fixes:

Browse Source 
* CRYPTO_SHA256 is needed for regdb validation
  * mac80211: mesh path metric was wrong in some frames
  * mac80211: use QoS null-data packets on QoS connections
  * mac80211: tear down RX aggregation sessions first to
    drop fewer packets in HW restart scenarios
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Merge tag 'mac80211-for-davem-2017-11-27' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Four fixes:
 * CRYPTO_SHA256 is needed for regdb validation
 * mac80211: mesh path metric was wrong in some frames
 * mac80211: use QoS null-data packets on QoS connections
 * mac80211: tear down RX aggregation sessions first to
   drop fewer packets in HW restart scenarios
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2017-11-28 01:09:42 +09:00
commit d3fe1e0185
10 changed files with 61 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/ath/ath9k/channel.c
View File

@ -1113,7 +1113,7 @@ ath_chanctx_send_vif_ps_frame(struct ath_softc *sc, struct ath_vif *avp,
if (!avp->assoc)
return false;
skb = ieee80211_nullfunc_get(sc->hw, vif);
skb = ieee80211_nullfunc_get(sc->hw, vif, false);
if (!skb)
return false;

4
drivers/net/wireless/st/cw1200/sta.c
View File

@ -198,7 +198,7 @@ void __cw1200_cqm_bssloss_sm(struct cw1200_common *priv,
priv->bss_loss_state++;
skb = ieee80211_nullfunc_get(priv->hw, priv->vif);
skb = ieee80211_nullfunc_get(priv->hw, priv->vif, false);
WARN_ON(!skb);
if (skb)
cw1200_tx(priv->hw, NULL, skb);
@ -2265,7 +2265,7 @@ static int cw1200_upload_null(struct cw1200_common *priv)
.rate = 0xFF,
};
frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif);
frame.skb = ieee80211_nullfunc_get(priv->hw, priv->vif, false);
if (!frame.skb)
return -ENOMEM;

2
drivers/net/wireless/ti/wl1251/main.c
View File

@ -566,7 +566,7 @@ static int wl1251_build_null_data(struct wl1251 *wl)
size = sizeof(struct wl12xx_null_data_template);
ptr = NULL;
} else {
skb = ieee80211_nullfunc_get(wl->hw, wl->vif);
skb = ieee80211_nullfunc_get(wl->hw, wl->vif, false);
if (!skb)
goto out;
size = skb->len;

5
drivers/net/wireless/ti/wlcore/cmd.c
View File

@ -1069,7 +1069,8 @@ int wl12xx_cmd_build_null_data(struct wl1271 *wl, struct wl12xx_vif *wlvif)
ptr = NULL;
} else {
skb = ieee80211_nullfunc_get(wl->hw,
wl12xx_wlvif_to_vif(wlvif));
wl12xx_wlvif_to_vif(wlvif),
false);
if (!skb)
goto out;
size = skb->len;
@ -1096,7 +1097,7 @@ int wl12xx_cmd_build_klv_null_data(struct wl1271 *wl,
struct sk_buff *skb = NULL;
int ret = -ENOMEM;
skb = ieee80211_nullfunc_get(wl->hw, vif);
skb = ieee80211_nullfunc_get(wl->hw, vif, false);
if (!skb)
goto out;

8
include/net/mac80211.h
View File

@ -4470,18 +4470,24 @@ struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw,
* ieee80211_nullfunc_get - retrieve a nullfunc template
* @hw: pointer obtained from ieee80211_alloc_hw().
* @vif: &struct ieee80211_vif pointer from the add_interface callback.
* @qos_ok: QoS NDP is acceptable to the caller, this should be set
* if at all possible
*
* Creates a Nullfunc template which can, for example, uploaded to
* hardware. The template must be updated after association so that correct
* BSSID and address is used.
*
* If @qos_ndp is set and the association is to an AP with QoS/WMM, the
* returned packet will be QoS NDP.
*
* Note: Caller (or hardware) is responsible for setting the
* &IEEE80211_FCTL_PM bit as well as Duration and Sequence Control fields.
*
* Return: The nullfunc template. %NULL on error.
*/
struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw,
struct ieee80211_vif *vif);
struct ieee80211_vif *vif,
bool qos_ok);
/**
* ieee80211_probereq_get - retrieve a Probe Request template

4
net/mac80211/ht.c
View File

@ -292,7 +292,6 @@ void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
mutex_lock(&sta->ampdu_mlme.mtx);
for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
___ieee80211_stop_tx_ba_session(sta, i, reason);
___ieee80211_stop_rx_ba_session(sta, i, WLAN_BACK_RECIPIENT,
WLAN_REASON_QSTA_LEAVE_QBSS,
reason != AGG_STOP_DESTROY_STA &&
@ -300,6 +299,9 @@ void ieee80211_sta_tear_down_BA_sessions(struct sta_info *sta,
}
mutex_unlock(&sta->ampdu_mlme.mtx);
for (i = 0; i < IEEE80211_NUM_TIDS; i++)
___ieee80211_stop_tx_ba_session(sta, i, reason);
/* stopping might queue the work again - so cancel only afterwards */
cancel_work_sync(&sta->ampdu_mlme.work);

15
net/mac80211/mesh_hwmp.c
View File

@ -797,7 +797,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
struct mesh_path *mpath;
u8 ttl, flags, hopcount;
const u8 *orig_addr;
u32 orig_sn, metric, metric_txsta, interval;
u32 orig_sn, new_metric, orig_metric, last_hop_metric, interval;
bool root_is_gate;
ttl = rann->rann_ttl;
@ -808,7 +808,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
interval = le32_to_cpu(rann->rann_interval);
hopcount = rann->rann_hopcount;
hopcount++;
metric = le32_to_cpu(rann->rann_metric);
orig_metric = le32_to_cpu(rann->rann_metric);
/* Ignore our own RANNs */
if (ether_addr_equal(orig_addr, sdata->vif.addr))
@ -825,7 +825,10 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
return;
}
metric_txsta = airtime_link_metric_get(local, sta);
last_hop_metric = airtime_link_metric_get(local, sta);
new_metric = orig_metric + last_hop_metric;
if (new_metric < orig_metric)
new_metric = MAX_METRIC;
mpath = mesh_path_lookup(sdata, orig_addr);
if (!mpath) {
@ -838,7 +841,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
}
if (!(SN_LT(mpath->sn, orig_sn)) &&
!(mpath->sn == orig_sn && metric < mpath->rann_metric)) {
!(mpath->sn == orig_sn && new_metric < mpath->rann_metric)) {
rcu_read_unlock();
return;
}
@ -856,7 +859,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
}
mpath->sn = orig_sn;
mpath->rann_metric = metric + metric_txsta;
mpath->rann_metric = new_metric;
mpath->is_root = true;
/* Recording RANNs sender address to send individually
* addressed PREQs destined for root mesh STA */
@ -876,7 +879,7 @@ static void hwmp_rann_frame_process(struct ieee80211_sub_if_data *sdata,
mesh_path_sel_frame_tx(MPATH_RANN, flags, orig_addr,
orig_sn, 0, NULL, 0, broadcast_addr,
hopcount, ttl, interval,
metric + metric_txsta, 0, sdata);
new_metric, 0, sdata);
}
rcu_read_unlock();

2
net/mac80211/mlme.c
View File

@ -895,7 +895,7 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
struct ieee80211_hdr_3addr *nullfunc;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif, true);
if (!skb)
return;

29
net/mac80211/tx.c
View File

@ -4438,13 +4438,15 @@ struct sk_buff *ieee80211_pspoll_get(struct ieee80211_hw *hw,
EXPORT_SYMBOL(ieee80211_pspoll_get);
struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
struct ieee80211_vif *vif,
bool qos_ok)
{
struct ieee80211_hdr_3addr *nullfunc;
struct ieee80211_sub_if_data *sdata;
struct ieee80211_if_managed *ifmgd;
struct ieee80211_local *local;
struct sk_buff *skb;
bool qos = false;
if (WARN_ON(vif->type != NL80211_IFTYPE_STATION))
return NULL;
@ -4453,7 +4455,17 @@ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw,
ifmgd = &sdata->u.mgd;
local = sdata->local;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*nullfunc));
if (qos_ok) {
struct sta_info *sta;
rcu_read_lock();
sta = sta_info_get(sdata, ifmgd->bssid);
qos = sta && sta->sta.wme;
rcu_read_unlock();
}
skb = dev_alloc_skb(local->hw.extra_tx_headroom +
sizeof(*nullfunc) + 2);
if (!skb)
return NULL;
@ -4463,6 +4475,19 @@ struct sk_buff *ieee80211_nullfunc_get(struct ieee80211_hw *hw,
nullfunc->frame_control = cpu_to_le16(IEEE80211_FTYPE_DATA |
IEEE80211_STYPE_NULLFUNC |
IEEE80211_FCTL_TODS);
if (qos) {
__le16 qos = cpu_to_le16(7);
BUILD_BUG_ON((IEEE80211_STYPE_QOS_NULLFUNC |
IEEE80211_STYPE_NULLFUNC) !=
IEEE80211_STYPE_QOS_NULLFUNC);
nullfunc->frame_control |=
cpu_to_le16(IEEE80211_STYPE_QOS_NULLFUNC);
skb->priority = 7;
skb_set_queue_mapping(skb, IEEE80211_AC_VO);
skb_put_data(skb, &qos, sizeof(qos));
}
memcpy(nullfunc->addr1, ifmgd->bssid, ETH_ALEN);
memcpy(nullfunc->addr2, vif->addr, ETH_ALEN);
memcpy(nullfunc->addr3, ifmgd->bssid, ETH_ALEN);

7
net/wireless/Kconfig
View File

@ -20,6 +20,10 @@ config CFG80211
tristate "cfg80211 - wireless configuration API"
depends on RFKILL || !RFKILL
select FW_LOADER
# may need to update this when certificates are changed and are
# using a different algorithm, though right now they shouldn't
# (this is here rather than below to allow it to be a module)
select CRYPTO_SHA256 if CFG80211_USE_KERNEL_REGDB_KEYS
---help---
cfg80211 is the Linux wireless LAN (802.11) configuration API.
Enable this if you have a wireless device.
@ -113,6 +117,9 @@ config CFG80211_EXTRA_REGDB_KEYDIR
certificates like in the kernel sources (net/wireless/certs/)
that shall be accepted for a signed regulatory database.
Note that you need to also select the correct CRYPTO_<hash> modules
for your certificates, and if cfg80211 is built-in they also must be.
config CFG80211_REG_CELLULAR_HINTS
bool "cfg80211 regulatory support for cellular base station hints"
depends on CFG80211_CERTIFICATION_ONUS