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Code Issues Releases Wiki Activity

wifi: nl80211: acquire wdev mutex earlier in start_ap

Browse source 
We need to hold the wdev mutex already in order to call
nl80211_parse_tx_bitrate_mask(), so acquire it earlier.

Fixes: 7b0a0e3c3a ("wifi: cfg80211: do some rework towards MLO link APIs")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2022-06-27 12:49:03 +02:00
parent 206bbcf761
commit c2653990d5
1 changed files with 13 additions and 12 deletions
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25
net/wireless/nl80211.c
View file

@ -5771,18 +5771,20 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
goto out;
}
wdev_lock(wdev);
if (info->attrs[NL80211_ATTR_TX_RATES]) {
err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
NL80211_ATTR_TX_RATES,
&params->beacon_rate,
dev, false, link_id);
if (err)
goto out;
goto out_unlock;
err = validate_beacon_tx_rate(rdev, params->chandef.chan->band,
&params->beacon_rate);
if (err)
goto out;
goto out_unlock;
}
if (info->attrs[NL80211_ATTR_SMPS_MODE]) {
@ -5795,19 +5797,19 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
if (!(rdev->wiphy.features &
NL80211_FEATURE_STATIC_SMPS)) {
err = -EINVAL;
goto out;
goto out_unlock;
}
break;
case NL80211_SMPS_DYNAMIC:
if (!(rdev->wiphy.features &
NL80211_FEATURE_DYNAMIC_SMPS)) {
err = -EINVAL;
goto out;
goto out_unlock;
}
break;
default:
err = -EINVAL;
goto out;
goto out_unlock;
}
} else {
params->smps_mode = NL80211_SMPS_OFF;
@ -5816,7 +5818,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
params->pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]);
if (params->pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) {
err = -EOPNOTSUPP;
goto out;
goto out_unlock;
}
if (info->attrs[NL80211_ATTR_ACL_POLICY]) {
@ -5824,7 +5826,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
if (IS_ERR(params->acl)) {
err = PTR_ERR(params->acl);
params->acl = NULL;
goto out;
goto out_unlock;
}
}
@ -5836,7 +5838,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
info->attrs[NL80211_ATTR_HE_OBSS_PD],
&params->he_obss_pd);
if (err)
goto out;
goto out_unlock;
}
if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) {
@ -5844,7 +5846,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
info->attrs[NL80211_ATTR_FILS_DISCOVERY],
params);
if (err)
goto out;
goto out_unlock;
}
if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) {
@ -5852,7 +5854,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP],
params);
if (err)
goto out;
goto out_unlock;
}
if (info->attrs[NL80211_ATTR_MBSSID_CONFIG]) {
@ -5863,7 +5865,7 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
params->beacon.mbssid_ies->cnt :
0);
if (err)
goto out;
goto out_unlock;
}
nl80211_calculate_ap_params(params);
@ -5874,7 +5876,6 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
else if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])
params->flags |= NL80211_AP_SETTINGS_EXTERNAL_AUTH_SUPPORT;
wdev_lock(wdev);
if (wdev->conn_owner_nlportid &&
info->attrs[NL80211_ATTR_SOCKET_OWNER] &&
wdev->conn_owner_nlportid != info->snd_portid) {