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mac80211: use QoS NDP for AP probing

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When connected to a QoS/WMM AP, mac80211 should use a QoS NDP
for probing it, instead of a regular non-QoS one, fix this.

Change all the drivers to *not* allow QoS NDP for now, even
though it looks like most of them should be OK with that.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2017-11-21 14:46:08 +01:00
parent 01a95b2141
commit 7b6ddeaf27
7 changed files with 42 additions and 10 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

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);