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wifi: detect FT support per interface and avoid enabling it

This commit is contained in:
Lubomir Rintel 2019-08-23 08:58:55 +02:00
parent 231f1105ed
commit f3de64e64d
2 changed files with 127 additions and 0 deletions
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125
0001-wifi-detect-FT-support-per-interface-and-avoid-enabl.patch Normal file
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@ -0,0 +1,125 @@
From b82f2d97720bf19e13bdcca5c18ccf5803da19a7 Mon Sep 17 00:00:00 2001
From: Thomas Haller <thaller@redhat.com>
Date: Tue, 20 Aug 2019 15:50:32 +0200
Subject: [PATCH] wifi: detect FT support per interface and avoid enabling it
Previously we only cared whether supplicant is build with support for
FT. In that case we would pass FT-PSK to supplicant, like
Config: added 'key_mgmt' value 'WPA-PSK WPA-PSK-SHA256 FT-PSK'
Supplicant would then always try FT with preference, regardless whether
the interface/driver support it. That results in a failure to associate, if
the driver does not support it.
NetworkManager[1356]: <info> [1566296144.9940] Config: added 'key_mgmt' value 'WPA-PSK WPA-PSK-SHA256 FT-PSK'
...
wpa_supplicant[1348]: wlan0: WPA: AP key_mgmt 0x42 network profile key_mgmt 0x142; available key_mgmt 0x42
wpa_supplicant[1348]: wlan0: WPA: using KEY_MGMT FT/PSK
...
wpa_supplicant[1348]: * akm=0xfac04
...
kernel: ERROR @wl_set_key_mgmt :
kernel: invalid cipher group (1027076)
Since we pass a list of acceptable "key_mgmt" options to supplicant,
FT-PSK should not be used when supplicant knows it's not supported.
That is a supplicant bug.
Regardless, work around it by checking the per-interface capability, and
avoid it if support is apparently not present.
(cherry picked from commit 2f8a4e90f0fd0f900996e3081d49f8799bba4c6f)
---
src/supplicant/nm-supplicant-interface.c | 35 ++++++++++++++++++------
1 file changed, 26 insertions(+), 9 deletions(-)
diff --git a/src/supplicant/nm-supplicant-interface.c b/src/supplicant/nm-supplicant-interface.c
index 079afca3b5..a54b770c35 100644
--- a/src/supplicant/nm-supplicant-interface.c
+++ b/src/supplicant/nm-supplicant-interface.c
@@ -135,7 +135,8 @@ typedef struct {
NMSupplicantFeature p2p_support;
NMSupplicantFeature mesh_support;
NMSupplicantFeature wfd_support;
- NMSupplicantFeature ft_support;
+ NMSupplicantFeature ft_support_global;
+ NMSupplicantFeature ft_support_per_iface;
NMSupplicantFeature sha384_support;
guint32 max_scan_ssids;
guint32 ready_count;
@@ -609,14 +610,25 @@ static void
parse_capabilities (NMSupplicantInterface *self, GVariant *capabilities)
{
NMSupplicantInterfacePrivate *priv = NM_SUPPLICANT_INTERFACE_GET_PRIVATE (self);
- gboolean have_active = FALSE, have_p2p = FALSE, have_ssid = FALSE;
+ gboolean have_active = FALSE;
+ gboolean have_ssid = FALSE;
+ gboolean have_p2p = FALSE;
+ gboolean have_ft = FALSE;
gint32 max_scan_ssids = -1;
const char **array;
g_return_if_fail (capabilities && g_variant_is_of_type (capabilities, G_VARIANT_TYPE_VARDICT));
- if ( g_variant_lookup (capabilities, "Modes", "^a&s", &array)
- && array) {
+ if (g_variant_lookup (capabilities, "KeyMgmt", "^a&s", &array)) {
+ have_ft = g_strv_contains (array, "wpa-ft-psk");
+ g_free (array);
+ }
+
+ priv->ft_support_per_iface = have_ft
+ ? NM_SUPPLICANT_FEATURE_YES
+ : NM_SUPPLICANT_FEATURE_NO;
+
+ if (g_variant_lookup (capabilities, "Modes", "^a&s", &array)) {
if (g_strv_contains (array, "p2p"))
have_p2p = TRUE;
g_free (array);
@@ -627,8 +639,7 @@ parse_capabilities (NMSupplicantInterface *self, GVariant *capabilities)
_notify (self, PROP_P2P_AVAILABLE);
}
- if ( g_variant_lookup (capabilities, "Scan", "^a&s", &array)
- && array) {
+ if (g_variant_lookup (capabilities, "Scan", "^a&s", &array)) {
if (g_strv_contains (array, "active"))
have_active = TRUE;
if (g_strv_contains (array, "ssid"))
@@ -807,7 +818,13 @@ nm_supplicant_interface_get_wfd_support (NMSupplicantInterface *self)
NMSupplicantFeature
nm_supplicant_interface_get_ft_support (NMSupplicantInterface *self)
{
- return NM_SUPPLICANT_INTERFACE_GET_PRIVATE (self)->ft_support;
+ NMSupplicantInterfacePrivate *priv = NM_SUPPLICANT_INTERFACE_GET_PRIVATE (self);
+
+ if (priv->ft_support_global == NM_SUPPLICANT_FEATURE_NO)
+ return NM_SUPPLICANT_FEATURE_NO;
+ if (priv->ft_support_per_iface != NM_SUPPLICANT_FEATURE_UNKNOWN)
+ return priv->ft_support_per_iface;
+ return priv->ft_support_global;
}
NMSupplicantFeature
@@ -889,7 +906,7 @@ nm_supplicant_interface_set_ft_support (NMSupplicantInterface *self,
{
NMSupplicantInterfacePrivate *priv = NM_SUPPLICANT_INTERFACE_GET_PRIVATE (self);
- priv->ft_support = ft_support;
+ priv->ft_support_global = ft_support;
}
void
@@ -2801,7 +2818,7 @@ set_property (GObject *object,
break;
case PROP_FT_SUPPORT:
/* construct-only */
- priv->ft_support = g_value_get_int (value);
+ priv->ft_support_global = g_value_get_int (value);
break;
case PROP_SHA384_SUPPORT:
/* construct-only */
--
2.21.0

2
NetworkManager.spec
View File

@ -135,6 +135,7 @@ Source5: 20-connectivity-redhat.conf
Source6: 70-nm-connectivity.conf
#Patch1: 0001-some.patch
Patch1: 0001-wifi-detect-FT-support-per-interface-and-avoid-enabl.patch
Requires(post): systemd
Requires(post): /usr/sbin/update-alternatives
@ -978,6 +979,7 @@ fi
%changelog
* Fri Aug 23 2019 Lubomir Rintel <lkundrak@v3.sk> - 1:1.20.0-3
- install our dispatcher scripts into /usr/lib/NetworkManager
- wifi: detect FT support per interface and avoid enabling it
* Thu Aug 15 2019 Lubomir Rintel <lkundrak@v3.sk> - 1:1.20.0-2
- Enable iwd support