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authorTakashi Iwai <tiwai@suse.de>2019-08-12 16:26:01 +0200
committerTakashi Iwai <tiwai@suse.de>2019-08-12 16:26:08 +0200
commit0a671c1e4331a9d891a6bca70de2e781e26ce6b0 (patch)
treead66ced3fd02cd55af4a82fb47dfd64e824e9b58
parent531a6caee66f9872b82ef3287b661cb111337a95 (diff)
{nl,mac}80211: fix interface combinations on crypto controlled
devices (bsc#1111666). suse-commit: 505ecbc1e8b0dc4065483c4d340039e5327229df
-rw-r--r--include/net/cfg80211.h15
-rw-r--r--net/mac80211/util.c7
-rw-r--r--net/wireless/core.c6
-rw-r--r--net/wireless/nl80211.c4
-rw-r--r--net/wireless/util.c27
5 files changed, 46 insertions, 13 deletions
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 351f0929594e..b936eaa855da 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -6563,6 +6563,21 @@ int cfg80211_external_auth_request(struct net_device *netdev,
struct cfg80211_external_auth_params *params,
gfp_t gfp);
+/**
+ * cfg80211_iftype_allowed - check whether the interface can be allowed
+ * @wiphy: the wiphy
+ * @iftype: interface type
+ * @is_4addr: use_4addr flag, must be '0' when check_swif is '1'
+ * @check_swif: check iftype against software interfaces
+ *
+ * Check whether the interface is allowed to operate; additionally, this API
+ * can be used to check iftype against the software interfaces when
+ * check_swif is '1'.
+ */
+bool cfg80211_iftype_allowed(struct wiphy *wiphy, enum nl80211_iftype iftype,
+ bool is_4addr, u8 check_swif);
+
+
/* Logging, debugging and troubleshooting/diagnostic helpers. */
/* wiphy_printk helpers, similar to dev_printk */
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 6a5445cf227b..38febea510d4 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -3526,9 +3526,7 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
}
/* Always allow software iftypes */
- if (local->hw.wiphy->software_iftypes & BIT(iftype) ||
- (iftype == NL80211_IFTYPE_AP_VLAN &&
- local->hw.wiphy->flags & WIPHY_FLAG_4ADDR_AP)) {
+ if (cfg80211_iftype_allowed(local->hw.wiphy, iftype, 0, 1)) {
if (radar_detect)
return -EINVAL;
return 0;
@@ -3563,7 +3561,8 @@ int ieee80211_check_combinations(struct ieee80211_sub_if_data *sdata,
if (sdata_iter == sdata ||
!ieee80211_sdata_running(sdata_iter) ||
- local->hw.wiphy->software_iftypes & BIT(wdev_iter->iftype))
+ cfg80211_iftype_allowed(local->hw.wiphy,
+ wdev_iter->iftype, 0, 1))
continue;
params.iftype_num[wdev_iter->iftype]++;
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 2a46ec3cb72c..68660781aa51 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -1335,10 +1335,8 @@ static int cfg80211_netdev_notifier_call(struct notifier_block *nb,
}
break;
case NETDEV_PRE_UP:
- if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype)) &&
- !(wdev->iftype == NL80211_IFTYPE_AP_VLAN &&
- rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP &&
- wdev->use_4addr))
+ if (!cfg80211_iftype_allowed(wdev->wiphy, wdev->iftype,
+ wdev->use_4addr, 0))
return notifier_from_errno(-EOPNOTSUPP);
if (rfkill_blocked(rdev->rfkill))
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index afe7edbe7347..388d448a99a0 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -3210,9 +3210,7 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info)
return err;
}
- if (!(rdev->wiphy.interface_modes & (1 << type)) &&
- !(type == NL80211_IFTYPE_AP_VLAN && params.use_4addr &&
- rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP))
+ if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0))
return -EOPNOTSUPP;
err = nl80211_parse_mon_options(rdev, type, info, &params);
diff --git a/net/wireless/util.c b/net/wireless/util.c
index a66c7900c930..d8c8293be9ce 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -1669,7 +1669,7 @@ int cfg80211_iter_combinations(struct wiphy *wiphy,
for (iftype = 0; iftype < NUM_NL80211_IFTYPES; iftype++) {
num_interfaces += params->iftype_num[iftype];
if (params->iftype_num[iftype] > 0 &&
- !(wiphy->software_iftypes & BIT(iftype)))
+ !cfg80211_iftype_allowed(wiphy, iftype, 0, 1))
used_iftypes |= BIT(iftype);
}
@@ -1691,7 +1691,7 @@ int cfg80211_iter_combinations(struct wiphy *wiphy,
return -ENOMEM;
for (iftype = 0; iftype < NUM_NL80211_IFTYPES; iftype++) {
- if (wiphy->software_iftypes & BIT(iftype))
+ if (cfg80211_iftype_allowed(wiphy, iftype, 0, 1))
continue;
for (j = 0; j < c->n_limits; j++) {
all_iftypes |= limits[j].types;
@@ -1894,3 +1894,26 @@ EXPORT_SYMBOL(rfc1042_header);
const unsigned char bridge_tunnel_header[] __aligned(2) =
{ 0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8 };
EXPORT_SYMBOL(bridge_tunnel_header);
+
+bool cfg80211_iftype_allowed(struct wiphy *wiphy, enum nl80211_iftype iftype,
+ bool is_4addr, u8 check_swif)
+
+{
+ bool is_vlan = iftype == NL80211_IFTYPE_AP_VLAN;
+
+ switch (check_swif) {
+ case 0:
+ if (is_vlan && is_4addr)
+ return wiphy->flags & WIPHY_FLAG_4ADDR_AP;
+ return wiphy->interface_modes & BIT(iftype);
+ case 1:
+ if (!(wiphy->software_iftypes & BIT(iftype)) && is_vlan)
+ return wiphy->flags & WIPHY_FLAG_4ADDR_AP;
+ return wiphy->software_iftypes & BIT(iftype);
+ default:
+ break;
+ }
+
+ return false;
+}
+EXPORT_SYMBOL(cfg80211_iftype_allowed);